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1da177e4 LT |
1 | /* |
2 | * net/core/ethtool.c - Ethtool ioctl handler | |
3 | * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx> | |
4 | * | |
5 | * This file is where we call all the ethtool_ops commands to get | |
61a44b9c | 6 | * the information ethtool needs. |
1da177e4 | 7 | * |
61a44b9c MW |
8 | * This program is free software; you can redistribute it and/or modify |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
1da177e4 LT |
12 | */ |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/types.h> | |
4fc268d2 | 16 | #include <linux/capability.h> |
1da177e4 LT |
17 | #include <linux/errno.h> |
18 | #include <linux/ethtool.h> | |
19 | #include <linux/netdevice.h> | |
c8f3a8c3 RC |
20 | #include <linux/net_tstamp.h> |
21 | #include <linux/phy.h> | |
d17792eb | 22 | #include <linux/bitops.h> |
97f8aefb | 23 | #include <linux/uaccess.h> |
73da16c2 | 24 | #include <linux/vmalloc.h> |
5a0e3ad6 | 25 | #include <linux/slab.h> |
68f512f2 BH |
26 | #include <linux/rtnetlink.h> |
27 | #include <linux/sched.h> | |
960fb622 | 28 | #include <linux/net.h> |
1da177e4 | 29 | |
4ec93edb | 30 | /* |
1da177e4 LT |
31 | * Some useful ethtool_ops methods that're device independent. |
32 | * If we find that all drivers want to do the same thing here, | |
33 | * we can turn these into dev_() function calls. | |
34 | */ | |
35 | ||
36 | u32 ethtool_op_get_link(struct net_device *dev) | |
37 | { | |
38 | return netif_carrier_ok(dev) ? 1 : 0; | |
39 | } | |
97f8aefb | 40 | EXPORT_SYMBOL(ethtool_op_get_link); |
1da177e4 | 41 | |
02eacbd0 RC |
42 | int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info) |
43 | { | |
44 | info->so_timestamping = | |
45 | SOF_TIMESTAMPING_TX_SOFTWARE | | |
46 | SOF_TIMESTAMPING_RX_SOFTWARE | | |
47 | SOF_TIMESTAMPING_SOFTWARE; | |
48 | info->phc_index = -1; | |
49 | return 0; | |
50 | } | |
51 | EXPORT_SYMBOL(ethtool_op_get_ts_info); | |
52 | ||
1da177e4 LT |
53 | /* Handlers for each ethtool command */ |
54 | ||
475414f6 | 55 | #define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32) |
5455c699 | 56 | |
9d921549 MM |
57 | static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = { |
58 | [NETIF_F_SG_BIT] = "tx-scatter-gather", | |
59 | [NETIF_F_IP_CSUM_BIT] = "tx-checksum-ipv4", | |
9d921549 MM |
60 | [NETIF_F_HW_CSUM_BIT] = "tx-checksum-ip-generic", |
61 | [NETIF_F_IPV6_CSUM_BIT] = "tx-checksum-ipv6", | |
62 | [NETIF_F_HIGHDMA_BIT] = "highdma", | |
63 | [NETIF_F_FRAGLIST_BIT] = "tx-scatter-gather-fraglist", | |
788dfcac | 64 | [NETIF_F_HW_VLAN_CTAG_TX_BIT] = "tx-vlan-hw-insert", |
9d921549 | 65 | |
788dfcac FLVC |
66 | [NETIF_F_HW_VLAN_CTAG_RX_BIT] = "rx-vlan-hw-parse", |
67 | [NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-filter", | |
2d6577f1 DM |
68 | [NETIF_F_HW_VLAN_STAG_TX_BIT] = "tx-vlan-stag-hw-insert", |
69 | [NETIF_F_HW_VLAN_STAG_RX_BIT] = "rx-vlan-stag-hw-parse", | |
70 | [NETIF_F_HW_VLAN_STAG_FILTER_BIT] = "rx-vlan-stag-filter", | |
9d921549 MM |
71 | [NETIF_F_VLAN_CHALLENGED_BIT] = "vlan-challenged", |
72 | [NETIF_F_GSO_BIT] = "tx-generic-segmentation", | |
73 | [NETIF_F_LLTX_BIT] = "tx-lockless", | |
74 | [NETIF_F_NETNS_LOCAL_BIT] = "netns-local", | |
75 | [NETIF_F_GRO_BIT] = "rx-gro", | |
76 | [NETIF_F_LRO_BIT] = "rx-lro", | |
77 | ||
78 | [NETIF_F_TSO_BIT] = "tx-tcp-segmentation", | |
79 | [NETIF_F_UFO_BIT] = "tx-udp-fragmentation", | |
80 | [NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust", | |
81 | [NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation", | |
cbc53e08 | 82 | [NETIF_F_TSO_MANGLEID_BIT] = "tx-tcp-mangleid-segmentation", |
9d921549 MM |
83 | [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation", |
84 | [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation", | |
68c33163 | 85 | [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation", |
518f213d | 86 | [NETIF_F_GSO_GRE_CSUM_BIT] = "tx-gre-csum-segmentation", |
7e13318d TH |
87 | [NETIF_F_GSO_IPXIP4_BIT] = "tx-ipxip4-segmentation", |
88 | [NETIF_F_GSO_IPXIP6_BIT] = "tx-ipxip6-segmentation", | |
73136267 | 89 | [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation", |
518f213d | 90 | [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation", |
802ab55a | 91 | [NETIF_F_GSO_PARTIAL_BIT] = "tx-gso-partial", |
90017acc | 92 | [NETIF_F_GSO_SCTP_BIT] = "tx-sctp-segmentation", |
9d921549 MM |
93 | |
94 | [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc", | |
53692b1d | 95 | [NETIF_F_SCTP_CRC_BIT] = "tx-checksum-sctp", |
9d921549 MM |
96 | [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu", |
97 | [NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter", | |
98 | [NETIF_F_RXHASH_BIT] = "rx-hashing", | |
99 | [NETIF_F_RXCSUM_BIT] = "rx-checksum", | |
100 | [NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy", | |
101 | [NETIF_F_LOOPBACK_BIT] = "loopback", | |
36eabda3 | 102 | [NETIF_F_RXFCS_BIT] = "rx-fcs", |
5e0c03c8 | 103 | [NETIF_F_RXALL_BIT] = "rx-all", |
a6cc0cfa | 104 | [NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload", |
d0290214 | 105 | [NETIF_F_BUSY_POLL_BIT] = "busy-poll", |
1c78c64e | 106 | [NETIF_F_HW_TC_BIT] = "hw-tc-offload", |
9d921549 MM |
107 | }; |
108 | ||
892311f6 EP |
109 | static const char |
110 | rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = { | |
111 | [ETH_RSS_HASH_TOP_BIT] = "toeplitz", | |
112 | [ETH_RSS_HASH_XOR_BIT] = "xor", | |
113 | }; | |
114 | ||
a4244b0c HHZ |
115 | static const char |
116 | tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = { | |
117 | [ETHTOOL_ID_UNSPEC] = "Unspec", | |
118 | [ETHTOOL_RX_COPYBREAK] = "rx-copybreak", | |
119 | [ETHTOOL_TX_COPYBREAK] = "tx-copybreak", | |
120 | }; | |
121 | ||
968ad9da RL |
122 | static const char |
123 | phy_tunable_strings[__ETHTOOL_PHY_TUNABLE_COUNT][ETH_GSTRING_LEN] = { | |
124 | [ETHTOOL_ID_UNSPEC] = "Unspec", | |
65feddd5 | 125 | [ETHTOOL_PHY_DOWNSHIFT] = "phy-downshift", |
968ad9da RL |
126 | }; |
127 | ||
5455c699 MM |
128 | static int ethtool_get_features(struct net_device *dev, void __user *useraddr) |
129 | { | |
130 | struct ethtool_gfeatures cmd = { | |
131 | .cmd = ETHTOOL_GFEATURES, | |
132 | .size = ETHTOOL_DEV_FEATURE_WORDS, | |
133 | }; | |
475414f6 | 134 | struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; |
5455c699 MM |
135 | u32 __user *sizeaddr; |
136 | u32 copy_size; | |
475414f6 MM |
137 | int i; |
138 | ||
139 | /* in case feature bits run out again */ | |
09da71b1 | 140 | BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); |
475414f6 MM |
141 | |
142 | for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { | |
09da71b1 MM |
143 | features[i].available = (u32)(dev->hw_features >> (32 * i)); |
144 | features[i].requested = (u32)(dev->wanted_features >> (32 * i)); | |
145 | features[i].active = (u32)(dev->features >> (32 * i)); | |
146 | features[i].never_changed = | |
147 | (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); | |
475414f6 | 148 | } |
5455c699 MM |
149 | |
150 | sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); | |
151 | if (get_user(copy_size, sizeaddr)) | |
152 | return -EFAULT; | |
153 | ||
154 | if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) | |
155 | copy_size = ETHTOOL_DEV_FEATURE_WORDS; | |
156 | ||
157 | if (copy_to_user(useraddr, &cmd, sizeof(cmd))) | |
158 | return -EFAULT; | |
159 | useraddr += sizeof(cmd); | |
160 | if (copy_to_user(useraddr, features, copy_size * sizeof(*features))) | |
161 | return -EFAULT; | |
162 | ||
163 | return 0; | |
164 | } | |
165 | ||
166 | static int ethtool_set_features(struct net_device *dev, void __user *useraddr) | |
167 | { | |
168 | struct ethtool_sfeatures cmd; | |
169 | struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; | |
475414f6 MM |
170 | netdev_features_t wanted = 0, valid = 0; |
171 | int i, ret = 0; | |
5455c699 MM |
172 | |
173 | if (copy_from_user(&cmd, useraddr, sizeof(cmd))) | |
174 | return -EFAULT; | |
175 | useraddr += sizeof(cmd); | |
176 | ||
177 | if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) | |
178 | return -EINVAL; | |
179 | ||
180 | if (copy_from_user(features, useraddr, sizeof(features))) | |
181 | return -EFAULT; | |
182 | ||
475414f6 | 183 | for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { |
09da71b1 MM |
184 | valid |= (netdev_features_t)features[i].valid << (32 * i); |
185 | wanted |= (netdev_features_t)features[i].requested << (32 * i); | |
475414f6 MM |
186 | } |
187 | ||
188 | if (valid & ~NETIF_F_ETHTOOL_BITS) | |
5455c699 MM |
189 | return -EINVAL; |
190 | ||
475414f6 MM |
191 | if (valid & ~dev->hw_features) { |
192 | valid &= dev->hw_features; | |
5455c699 MM |
193 | ret |= ETHTOOL_F_UNSUPPORTED; |
194 | } | |
195 | ||
475414f6 MM |
196 | dev->wanted_features &= ~valid; |
197 | dev->wanted_features |= wanted & valid; | |
6cb6a27c | 198 | __netdev_update_features(dev); |
5455c699 | 199 | |
475414f6 | 200 | if ((dev->wanted_features ^ dev->features) & valid) |
5455c699 MM |
201 | ret |= ETHTOOL_F_WISH; |
202 | ||
203 | return ret; | |
204 | } | |
205 | ||
f3a40945 AL |
206 | static int phy_get_sset_count(struct phy_device *phydev) |
207 | { | |
208 | int ret; | |
209 | ||
210 | if (phydev->drv->get_sset_count && | |
211 | phydev->drv->get_strings && | |
212 | phydev->drv->get_stats) { | |
213 | mutex_lock(&phydev->lock); | |
214 | ret = phydev->drv->get_sset_count(phydev); | |
215 | mutex_unlock(&phydev->lock); | |
216 | ||
217 | return ret; | |
218 | } | |
219 | ||
220 | return -EOPNOTSUPP; | |
221 | } | |
222 | ||
340ae165 MM |
223 | static int __ethtool_get_sset_count(struct net_device *dev, int sset) |
224 | { | |
225 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
226 | ||
5455c699 MM |
227 | if (sset == ETH_SS_FEATURES) |
228 | return ARRAY_SIZE(netdev_features_strings); | |
229 | ||
892311f6 EP |
230 | if (sset == ETH_SS_RSS_HASH_FUNCS) |
231 | return ARRAY_SIZE(rss_hash_func_strings); | |
232 | ||
a4244b0c HHZ |
233 | if (sset == ETH_SS_TUNABLES) |
234 | return ARRAY_SIZE(tunable_strings); | |
235 | ||
968ad9da RL |
236 | if (sset == ETH_SS_PHY_TUNABLES) |
237 | return ARRAY_SIZE(phy_tunable_strings); | |
238 | ||
f3a40945 AL |
239 | if (sset == ETH_SS_PHY_STATS) { |
240 | if (dev->phydev) | |
241 | return phy_get_sset_count(dev->phydev); | |
242 | else | |
243 | return -EOPNOTSUPP; | |
244 | } | |
245 | ||
c03a14e8 | 246 | if (ops->get_sset_count && ops->get_strings) |
340ae165 MM |
247 | return ops->get_sset_count(dev, sset); |
248 | else | |
249 | return -EOPNOTSUPP; | |
250 | } | |
251 | ||
252 | static void __ethtool_get_strings(struct net_device *dev, | |
253 | u32 stringset, u8 *data) | |
254 | { | |
255 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
256 | ||
5455c699 MM |
257 | if (stringset == ETH_SS_FEATURES) |
258 | memcpy(data, netdev_features_strings, | |
259 | sizeof(netdev_features_strings)); | |
892311f6 EP |
260 | else if (stringset == ETH_SS_RSS_HASH_FUNCS) |
261 | memcpy(data, rss_hash_func_strings, | |
262 | sizeof(rss_hash_func_strings)); | |
a4244b0c HHZ |
263 | else if (stringset == ETH_SS_TUNABLES) |
264 | memcpy(data, tunable_strings, sizeof(tunable_strings)); | |
968ad9da RL |
265 | else if (stringset == ETH_SS_PHY_TUNABLES) |
266 | memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); | |
f3a40945 AL |
267 | else if (stringset == ETH_SS_PHY_STATS) { |
268 | struct phy_device *phydev = dev->phydev; | |
269 | ||
270 | if (phydev) { | |
271 | mutex_lock(&phydev->lock); | |
272 | phydev->drv->get_strings(phydev, data); | |
273 | mutex_unlock(&phydev->lock); | |
274 | } else { | |
275 | return; | |
276 | } | |
277 | } else | |
5455c699 MM |
278 | /* ops->get_strings is valid because checked earlier */ |
279 | ops->get_strings(dev, stringset, data); | |
340ae165 MM |
280 | } |
281 | ||
c8f44aff | 282 | static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) |
0a417704 MM |
283 | { |
284 | /* feature masks of legacy discrete ethtool ops */ | |
285 | ||
286 | switch (eth_cmd) { | |
287 | case ETHTOOL_GTXCSUM: | |
288 | case ETHTOOL_STXCSUM: | |
a188222b | 289 | return NETIF_F_CSUM_MASK | NETIF_F_SCTP_CRC; |
e83d360d MM |
290 | case ETHTOOL_GRXCSUM: |
291 | case ETHTOOL_SRXCSUM: | |
292 | return NETIF_F_RXCSUM; | |
0a417704 MM |
293 | case ETHTOOL_GSG: |
294 | case ETHTOOL_SSG: | |
295 | return NETIF_F_SG; | |
296 | case ETHTOOL_GTSO: | |
297 | case ETHTOOL_STSO: | |
298 | return NETIF_F_ALL_TSO; | |
299 | case ETHTOOL_GUFO: | |
300 | case ETHTOOL_SUFO: | |
301 | return NETIF_F_UFO; | |
302 | case ETHTOOL_GGSO: | |
303 | case ETHTOOL_SGSO: | |
304 | return NETIF_F_GSO; | |
305 | case ETHTOOL_GGRO: | |
306 | case ETHTOOL_SGRO: | |
307 | return NETIF_F_GRO; | |
308 | default: | |
309 | BUG(); | |
310 | } | |
311 | } | |
312 | ||
0a417704 MM |
313 | static int ethtool_get_one_feature(struct net_device *dev, |
314 | char __user *useraddr, u32 ethcmd) | |
315 | { | |
c8f44aff | 316 | netdev_features_t mask = ethtool_get_feature_mask(ethcmd); |
0a417704 MM |
317 | struct ethtool_value edata = { |
318 | .cmd = ethcmd, | |
86794881 | 319 | .data = !!(dev->features & mask), |
0a417704 | 320 | }; |
0a417704 | 321 | |
0a417704 MM |
322 | if (copy_to_user(useraddr, &edata, sizeof(edata))) |
323 | return -EFAULT; | |
324 | return 0; | |
325 | } | |
326 | ||
0a417704 MM |
327 | static int ethtool_set_one_feature(struct net_device *dev, |
328 | void __user *useraddr, u32 ethcmd) | |
329 | { | |
330 | struct ethtool_value edata; | |
c8f44aff | 331 | netdev_features_t mask; |
0a417704 MM |
332 | |
333 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
334 | return -EFAULT; | |
335 | ||
86794881 MM |
336 | mask = ethtool_get_feature_mask(ethcmd); |
337 | mask &= dev->hw_features; | |
bc5787c6 MM |
338 | if (!mask) |
339 | return -EOPNOTSUPP; | |
86794881 | 340 | |
bc5787c6 MM |
341 | if (edata.data) |
342 | dev->wanted_features |= mask; | |
343 | else | |
344 | dev->wanted_features &= ~mask; | |
86794881 | 345 | |
bc5787c6 | 346 | __netdev_update_features(dev); |
86794881 | 347 | |
bc5787c6 MM |
348 | return 0; |
349 | } | |
350 | ||
02b3a552 MM |
351 | #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ |
352 | ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) | |
f646968f PM |
353 | #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ |
354 | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ | |
355 | NETIF_F_RXHASH) | |
bc5787c6 MM |
356 | |
357 | static u32 __ethtool_get_flags(struct net_device *dev) | |
358 | { | |
02b3a552 MM |
359 | u32 flags = 0; |
360 | ||
8a73125c DF |
361 | if (dev->features & NETIF_F_LRO) |
362 | flags |= ETH_FLAG_LRO; | |
363 | if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) | |
364 | flags |= ETH_FLAG_RXVLAN; | |
365 | if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) | |
366 | flags |= ETH_FLAG_TXVLAN; | |
367 | if (dev->features & NETIF_F_NTUPLE) | |
368 | flags |= ETH_FLAG_NTUPLE; | |
369 | if (dev->features & NETIF_F_RXHASH) | |
370 | flags |= ETH_FLAG_RXHASH; | |
02b3a552 MM |
371 | |
372 | return flags; | |
0a417704 MM |
373 | } |
374 | ||
bc5787c6 | 375 | static int __ethtool_set_flags(struct net_device *dev, u32 data) |
da8ac86c | 376 | { |
c8f44aff | 377 | netdev_features_t features = 0, changed; |
da8ac86c | 378 | |
02b3a552 | 379 | if (data & ~ETH_ALL_FLAGS) |
da8ac86c MM |
380 | return -EINVAL; |
381 | ||
8a73125c DF |
382 | if (data & ETH_FLAG_LRO) |
383 | features |= NETIF_F_LRO; | |
384 | if (data & ETH_FLAG_RXVLAN) | |
385 | features |= NETIF_F_HW_VLAN_CTAG_RX; | |
386 | if (data & ETH_FLAG_TXVLAN) | |
387 | features |= NETIF_F_HW_VLAN_CTAG_TX; | |
388 | if (data & ETH_FLAG_NTUPLE) | |
389 | features |= NETIF_F_NTUPLE; | |
390 | if (data & ETH_FLAG_RXHASH) | |
391 | features |= NETIF_F_RXHASH; | |
02b3a552 | 392 | |
da8ac86c | 393 | /* allow changing only bits set in hw_features */ |
02b3a552 | 394 | changed = (features ^ dev->features) & ETH_ALL_FEATURES; |
da8ac86c MM |
395 | if (changed & ~dev->hw_features) |
396 | return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; | |
397 | ||
398 | dev->wanted_features = | |
02b3a552 | 399 | (dev->wanted_features & ~changed) | (features & changed); |
da8ac86c | 400 | |
6cb6a27c | 401 | __netdev_update_features(dev); |
da8ac86c MM |
402 | |
403 | return 0; | |
404 | } | |
405 | ||
6d62b4d5 PR |
406 | void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, |
407 | u32 legacy_u32) | |
3f1ac7a7 DD |
408 | { |
409 | bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS); | |
410 | dst[0] = legacy_u32; | |
411 | } | |
6d62b4d5 | 412 | EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); |
3f1ac7a7 DD |
413 | |
414 | /* return false if src had higher bits set. lower bits always updated. */ | |
6d62b4d5 PR |
415 | bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, |
416 | const unsigned long *src) | |
3f1ac7a7 DD |
417 | { |
418 | bool retval = true; | |
419 | ||
420 | /* TODO: following test will soon always be true */ | |
421 | if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) { | |
422 | __ETHTOOL_DECLARE_LINK_MODE_MASK(ext); | |
423 | ||
424 | bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS); | |
425 | bitmap_fill(ext, 32); | |
426 | bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS); | |
427 | if (bitmap_intersects(ext, src, | |
428 | __ETHTOOL_LINK_MODE_MASK_NBITS)) { | |
429 | /* src mask goes beyond bit 31 */ | |
430 | retval = false; | |
431 | } | |
432 | } | |
433 | *legacy_u32 = src[0]; | |
434 | return retval; | |
435 | } | |
6d62b4d5 | 436 | EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); |
3f1ac7a7 DD |
437 | |
438 | /* return false if legacy contained non-0 deprecated fields | |
439 | * transceiver/maxtxpkt/maxrxpkt. rest of ksettings always updated | |
440 | */ | |
441 | static bool | |
442 | convert_legacy_settings_to_link_ksettings( | |
443 | struct ethtool_link_ksettings *link_ksettings, | |
444 | const struct ethtool_cmd *legacy_settings) | |
445 | { | |
446 | bool retval = true; | |
447 | ||
448 | memset(link_ksettings, 0, sizeof(*link_ksettings)); | |
449 | ||
450 | /* This is used to tell users that driver is still using these | |
451 | * deprecated legacy fields, and they should not use | |
452 | * %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS | |
453 | */ | |
454 | if (legacy_settings->transceiver || | |
455 | legacy_settings->maxtxpkt || | |
456 | legacy_settings->maxrxpkt) | |
457 | retval = false; | |
458 | ||
6d62b4d5 | 459 | ethtool_convert_legacy_u32_to_link_mode( |
3f1ac7a7 DD |
460 | link_ksettings->link_modes.supported, |
461 | legacy_settings->supported); | |
6d62b4d5 | 462 | ethtool_convert_legacy_u32_to_link_mode( |
3f1ac7a7 DD |
463 | link_ksettings->link_modes.advertising, |
464 | legacy_settings->advertising); | |
6d62b4d5 | 465 | ethtool_convert_legacy_u32_to_link_mode( |
3f1ac7a7 DD |
466 | link_ksettings->link_modes.lp_advertising, |
467 | legacy_settings->lp_advertising); | |
468 | link_ksettings->base.speed | |
469 | = ethtool_cmd_speed(legacy_settings); | |
470 | link_ksettings->base.duplex | |
471 | = legacy_settings->duplex; | |
472 | link_ksettings->base.port | |
473 | = legacy_settings->port; | |
474 | link_ksettings->base.phy_address | |
475 | = legacy_settings->phy_address; | |
476 | link_ksettings->base.autoneg | |
477 | = legacy_settings->autoneg; | |
478 | link_ksettings->base.mdio_support | |
479 | = legacy_settings->mdio_support; | |
480 | link_ksettings->base.eth_tp_mdix | |
481 | = legacy_settings->eth_tp_mdix; | |
482 | link_ksettings->base.eth_tp_mdix_ctrl | |
483 | = legacy_settings->eth_tp_mdix_ctrl; | |
484 | return retval; | |
485 | } | |
486 | ||
487 | /* return false if ksettings link modes had higher bits | |
488 | * set. legacy_settings always updated (best effort) | |
489 | */ | |
490 | static bool | |
491 | convert_link_ksettings_to_legacy_settings( | |
492 | struct ethtool_cmd *legacy_settings, | |
493 | const struct ethtool_link_ksettings *link_ksettings) | |
494 | { | |
495 | bool retval = true; | |
496 | ||
497 | memset(legacy_settings, 0, sizeof(*legacy_settings)); | |
498 | /* this also clears the deprecated fields in legacy structure: | |
499 | * __u8 transceiver; | |
500 | * __u32 maxtxpkt; | |
501 | * __u32 maxrxpkt; | |
502 | */ | |
503 | ||
6d62b4d5 | 504 | retval &= ethtool_convert_link_mode_to_legacy_u32( |
3f1ac7a7 DD |
505 | &legacy_settings->supported, |
506 | link_ksettings->link_modes.supported); | |
6d62b4d5 | 507 | retval &= ethtool_convert_link_mode_to_legacy_u32( |
3f1ac7a7 DD |
508 | &legacy_settings->advertising, |
509 | link_ksettings->link_modes.advertising); | |
6d62b4d5 | 510 | retval &= ethtool_convert_link_mode_to_legacy_u32( |
3f1ac7a7 DD |
511 | &legacy_settings->lp_advertising, |
512 | link_ksettings->link_modes.lp_advertising); | |
513 | ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); | |
514 | legacy_settings->duplex | |
515 | = link_ksettings->base.duplex; | |
516 | legacy_settings->port | |
517 | = link_ksettings->base.port; | |
518 | legacy_settings->phy_address | |
519 | = link_ksettings->base.phy_address; | |
520 | legacy_settings->autoneg | |
521 | = link_ksettings->base.autoneg; | |
522 | legacy_settings->mdio_support | |
523 | = link_ksettings->base.mdio_support; | |
524 | legacy_settings->eth_tp_mdix | |
525 | = link_ksettings->base.eth_tp_mdix; | |
526 | legacy_settings->eth_tp_mdix_ctrl | |
527 | = link_ksettings->base.eth_tp_mdix_ctrl; | |
528 | return retval; | |
529 | } | |
530 | ||
531 | /* number of 32-bit words to store the user's link mode bitmaps */ | |
532 | #define __ETHTOOL_LINK_MODE_MASK_NU32 \ | |
533 | DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) | |
534 | ||
535 | /* layout of the struct passed from/to userland */ | |
536 | struct ethtool_link_usettings { | |
537 | struct ethtool_link_settings base; | |
538 | struct { | |
539 | __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; | |
540 | __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; | |
541 | __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; | |
542 | } link_modes; | |
543 | }; | |
544 | ||
545 | /* Internal kernel helper to query a device ethtool_link_settings. | |
546 | * | |
547 | * Backward compatibility note: for compatibility with legacy drivers | |
548 | * that implement only the ethtool_cmd API, this has to work with both | |
549 | * drivers implementing get_link_ksettings API and drivers | |
550 | * implementing get_settings API. When drivers implement get_settings | |
551 | * and report ethtool_cmd deprecated fields | |
552 | * (transceiver/maxrxpkt/maxtxpkt), these fields are silently ignored | |
553 | * because the resulting struct ethtool_link_settings does not report them. | |
554 | */ | |
555 | int __ethtool_get_link_ksettings(struct net_device *dev, | |
556 | struct ethtool_link_ksettings *link_ksettings) | |
557 | { | |
558 | int err; | |
559 | struct ethtool_cmd cmd; | |
560 | ||
561 | ASSERT_RTNL(); | |
562 | ||
563 | if (dev->ethtool_ops->get_link_ksettings) { | |
564 | memset(link_ksettings, 0, sizeof(*link_ksettings)); | |
565 | return dev->ethtool_ops->get_link_ksettings(dev, | |
566 | link_ksettings); | |
567 | } | |
568 | ||
569 | /* driver doesn't support %ethtool_link_ksettings API. revert to | |
570 | * legacy %ethtool_cmd API, unless it's not supported either. | |
571 | * TODO: remove when ethtool_ops::get_settings disappears internally | |
572 | */ | |
3237fc63 DD |
573 | if (!dev->ethtool_ops->get_settings) |
574 | return -EOPNOTSUPP; | |
575 | ||
576 | memset(&cmd, 0, sizeof(cmd)); | |
577 | cmd.cmd = ETHTOOL_GSET; | |
578 | err = dev->ethtool_ops->get_settings(dev, &cmd); | |
3f1ac7a7 DD |
579 | if (err < 0) |
580 | return err; | |
581 | ||
582 | /* we ignore deprecated fields transceiver/maxrxpkt/maxtxpkt | |
583 | */ | |
584 | convert_legacy_settings_to_link_ksettings(link_ksettings, &cmd); | |
585 | return err; | |
586 | } | |
587 | EXPORT_SYMBOL(__ethtool_get_link_ksettings); | |
588 | ||
589 | /* convert ethtool_link_usettings in user space to a kernel internal | |
590 | * ethtool_link_ksettings. return 0 on success, errno on error. | |
591 | */ | |
592 | static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, | |
593 | const void __user *from) | |
594 | { | |
595 | struct ethtool_link_usettings link_usettings; | |
596 | ||
597 | if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) | |
598 | return -EFAULT; | |
599 | ||
600 | memcpy(&to->base, &link_usettings.base, sizeof(to->base)); | |
601 | bitmap_from_u32array(to->link_modes.supported, | |
602 | __ETHTOOL_LINK_MODE_MASK_NBITS, | |
603 | link_usettings.link_modes.supported, | |
604 | __ETHTOOL_LINK_MODE_MASK_NU32); | |
605 | bitmap_from_u32array(to->link_modes.advertising, | |
606 | __ETHTOOL_LINK_MODE_MASK_NBITS, | |
607 | link_usettings.link_modes.advertising, | |
608 | __ETHTOOL_LINK_MODE_MASK_NU32); | |
609 | bitmap_from_u32array(to->link_modes.lp_advertising, | |
610 | __ETHTOOL_LINK_MODE_MASK_NBITS, | |
611 | link_usettings.link_modes.lp_advertising, | |
612 | __ETHTOOL_LINK_MODE_MASK_NU32); | |
613 | ||
614 | return 0; | |
615 | } | |
616 | ||
617 | /* convert a kernel internal ethtool_link_ksettings to | |
618 | * ethtool_link_usettings in user space. return 0 on success, errno on | |
619 | * error. | |
620 | */ | |
621 | static int | |
622 | store_link_ksettings_for_user(void __user *to, | |
623 | const struct ethtool_link_ksettings *from) | |
624 | { | |
625 | struct ethtool_link_usettings link_usettings; | |
626 | ||
627 | memcpy(&link_usettings.base, &from->base, sizeof(link_usettings)); | |
628 | bitmap_to_u32array(link_usettings.link_modes.supported, | |
629 | __ETHTOOL_LINK_MODE_MASK_NU32, | |
630 | from->link_modes.supported, | |
631 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
632 | bitmap_to_u32array(link_usettings.link_modes.advertising, | |
633 | __ETHTOOL_LINK_MODE_MASK_NU32, | |
634 | from->link_modes.advertising, | |
635 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
636 | bitmap_to_u32array(link_usettings.link_modes.lp_advertising, | |
637 | __ETHTOOL_LINK_MODE_MASK_NU32, | |
638 | from->link_modes.lp_advertising, | |
639 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
640 | ||
641 | if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) | |
642 | return -EFAULT; | |
643 | ||
644 | return 0; | |
645 | } | |
646 | ||
647 | /* Query device for its ethtool_link_settings. | |
648 | * | |
649 | * Backward compatibility note: this function must fail when driver | |
650 | * does not implement ethtool::get_link_ksettings, even if legacy | |
651 | * ethtool_ops::get_settings is implemented. This tells new versions | |
652 | * of ethtool that they should use the legacy API %ETHTOOL_GSET for | |
653 | * this driver, so that they can correctly access the ethtool_cmd | |
654 | * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver | |
655 | * implements ethtool_ops::get_settings anymore. | |
656 | */ | |
657 | static int ethtool_get_link_ksettings(struct net_device *dev, | |
658 | void __user *useraddr) | |
659 | { | |
660 | int err = 0; | |
661 | struct ethtool_link_ksettings link_ksettings; | |
662 | ||
663 | ASSERT_RTNL(); | |
664 | ||
665 | if (!dev->ethtool_ops->get_link_ksettings) | |
666 | return -EOPNOTSUPP; | |
667 | ||
668 | /* handle bitmap nbits handshake */ | |
669 | if (copy_from_user(&link_ksettings.base, useraddr, | |
670 | sizeof(link_ksettings.base))) | |
671 | return -EFAULT; | |
672 | ||
673 | if (__ETHTOOL_LINK_MODE_MASK_NU32 | |
674 | != link_ksettings.base.link_mode_masks_nwords) { | |
675 | /* wrong link mode nbits requested */ | |
676 | memset(&link_ksettings, 0, sizeof(link_ksettings)); | |
793cf87d | 677 | link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; |
3f1ac7a7 DD |
678 | /* send back number of words required as negative val */ |
679 | compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, | |
680 | "need too many bits for link modes!"); | |
681 | link_ksettings.base.link_mode_masks_nwords | |
682 | = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); | |
683 | ||
684 | /* copy the base fields back to user, not the link | |
685 | * mode bitmaps | |
686 | */ | |
687 | if (copy_to_user(useraddr, &link_ksettings.base, | |
688 | sizeof(link_ksettings.base))) | |
689 | return -EFAULT; | |
690 | ||
691 | return 0; | |
692 | } | |
693 | ||
694 | /* handshake successful: user/kernel agree on | |
695 | * link_mode_masks_nwords | |
696 | */ | |
697 | ||
698 | memset(&link_ksettings, 0, sizeof(link_ksettings)); | |
699 | err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); | |
700 | if (err < 0) | |
701 | return err; | |
702 | ||
703 | /* make sure we tell the right values to user */ | |
704 | link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; | |
705 | link_ksettings.base.link_mode_masks_nwords | |
706 | = __ETHTOOL_LINK_MODE_MASK_NU32; | |
707 | ||
708 | return store_link_ksettings_for_user(useraddr, &link_ksettings); | |
709 | } | |
710 | ||
711 | /* Update device ethtool_link_settings. | |
712 | * | |
713 | * Backward compatibility note: this function must fail when driver | |
714 | * does not implement ethtool::set_link_ksettings, even if legacy | |
715 | * ethtool_ops::set_settings is implemented. This tells new versions | |
716 | * of ethtool that they should use the legacy API %ETHTOOL_SSET for | |
717 | * this driver, so that they can correctly update the ethtool_cmd | |
718 | * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver | |
719 | * implements ethtool_ops::get_settings anymore. | |
720 | */ | |
721 | static int ethtool_set_link_ksettings(struct net_device *dev, | |
722 | void __user *useraddr) | |
723 | { | |
724 | int err; | |
725 | struct ethtool_link_ksettings link_ksettings; | |
726 | ||
727 | ASSERT_RTNL(); | |
728 | ||
729 | if (!dev->ethtool_ops->set_link_ksettings) | |
730 | return -EOPNOTSUPP; | |
731 | ||
732 | /* make sure nbits field has expected value */ | |
733 | if (copy_from_user(&link_ksettings.base, useraddr, | |
734 | sizeof(link_ksettings.base))) | |
735 | return -EFAULT; | |
736 | ||
737 | if (__ETHTOOL_LINK_MODE_MASK_NU32 | |
738 | != link_ksettings.base.link_mode_masks_nwords) | |
739 | return -EINVAL; | |
740 | ||
741 | /* copy the whole structure, now that we know it has expected | |
742 | * format | |
743 | */ | |
744 | err = load_link_ksettings_from_user(&link_ksettings, useraddr); | |
745 | if (err) | |
746 | return err; | |
747 | ||
748 | /* re-check nwords field, just in case */ | |
749 | if (__ETHTOOL_LINK_MODE_MASK_NU32 | |
750 | != link_ksettings.base.link_mode_masks_nwords) | |
751 | return -EINVAL; | |
752 | ||
753 | return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); | |
754 | } | |
755 | ||
3f1ac7a7 DD |
756 | static void |
757 | warn_incomplete_ethtool_legacy_settings_conversion(const char *details) | |
758 | { | |
759 | char name[sizeof(current->comm)]; | |
760 | ||
761 | pr_info_once("warning: `%s' uses legacy ethtool link settings API, %s\n", | |
762 | get_task_comm(name, current), details); | |
763 | } | |
764 | ||
765 | /* Query device for its ethtool_cmd settings. | |
766 | * | |
767 | * Backward compatibility note: for compatibility with legacy ethtool, | |
768 | * this has to work with both drivers implementing get_link_ksettings | |
769 | * API and drivers implementing get_settings API. When drivers | |
770 | * implement get_link_ksettings and report higher link mode bits, a | |
771 | * kernel warning is logged once (with name of 1st driver/device) to | |
772 | * recommend user to upgrade ethtool, but the command is successful | |
773 | * (only the lower link mode bits reported back to user). | |
774 | */ | |
4bc71cb9 JP |
775 | static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) |
776 | { | |
4bc71cb9 JP |
777 | struct ethtool_cmd cmd; |
778 | ||
3f1ac7a7 DD |
779 | ASSERT_RTNL(); |
780 | ||
781 | if (dev->ethtool_ops->get_link_ksettings) { | |
782 | /* First, use link_ksettings API if it is supported */ | |
783 | int err; | |
784 | struct ethtool_link_ksettings link_ksettings; | |
785 | ||
786 | memset(&link_ksettings, 0, sizeof(link_ksettings)); | |
787 | err = dev->ethtool_ops->get_link_ksettings(dev, | |
788 | &link_ksettings); | |
789 | if (err < 0) | |
790 | return err; | |
791 | if (!convert_link_ksettings_to_legacy_settings(&cmd, | |
792 | &link_ksettings)) | |
793 | warn_incomplete_ethtool_legacy_settings_conversion( | |
794 | "link modes are only partially reported"); | |
795 | ||
796 | /* send a sensible cmd tag back to user */ | |
797 | cmd.cmd = ETHTOOL_GSET; | |
798 | } else { | |
3f1ac7a7 DD |
799 | /* driver doesn't support %ethtool_link_ksettings |
800 | * API. revert to legacy %ethtool_cmd API, unless it's | |
801 | * not supported either. | |
802 | */ | |
3237fc63 DD |
803 | int err; |
804 | ||
805 | if (!dev->ethtool_ops->get_settings) | |
806 | return -EOPNOTSUPP; | |
807 | ||
808 | memset(&cmd, 0, sizeof(cmd)); | |
809 | cmd.cmd = ETHTOOL_GSET; | |
810 | err = dev->ethtool_ops->get_settings(dev, &cmd); | |
3f1ac7a7 DD |
811 | if (err < 0) |
812 | return err; | |
813 | } | |
1da177e4 LT |
814 | |
815 | if (copy_to_user(useraddr, &cmd, sizeof(cmd))) | |
816 | return -EFAULT; | |
3f1ac7a7 | 817 | |
1da177e4 LT |
818 | return 0; |
819 | } | |
820 | ||
3f1ac7a7 DD |
821 | /* Update device link settings with given ethtool_cmd. |
822 | * | |
823 | * Backward compatibility note: for compatibility with legacy ethtool, | |
824 | * this has to work with both drivers implementing set_link_ksettings | |
825 | * API and drivers implementing set_settings API. When drivers | |
826 | * implement set_link_ksettings and user's request updates deprecated | |
827 | * ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel | |
828 | * warning is logged once (with name of 1st driver/device) to | |
829 | * recommend user to upgrade ethtool, and the request is rejected. | |
830 | */ | |
1da177e4 LT |
831 | static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) |
832 | { | |
833 | struct ethtool_cmd cmd; | |
834 | ||
3f1ac7a7 | 835 | ASSERT_RTNL(); |
1da177e4 LT |
836 | |
837 | if (copy_from_user(&cmd, useraddr, sizeof(cmd))) | |
838 | return -EFAULT; | |
839 | ||
3f1ac7a7 DD |
840 | /* first, try new %ethtool_link_ksettings API. */ |
841 | if (dev->ethtool_ops->set_link_ksettings) { | |
842 | struct ethtool_link_ksettings link_ksettings; | |
843 | ||
844 | if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, | |
845 | &cmd)) | |
846 | return -EINVAL; | |
847 | ||
848 | link_ksettings.base.cmd = ETHTOOL_SLINKSETTINGS; | |
849 | link_ksettings.base.link_mode_masks_nwords | |
850 | = __ETHTOOL_LINK_MODE_MASK_NU32; | |
851 | return dev->ethtool_ops->set_link_ksettings(dev, | |
852 | &link_ksettings); | |
853 | } | |
854 | ||
855 | /* legacy %ethtool_cmd API */ | |
856 | ||
857 | /* TODO: return -EOPNOTSUPP when ethtool_ops::get_settings | |
858 | * disappears internally | |
859 | */ | |
860 | ||
861 | if (!dev->ethtool_ops->set_settings) | |
862 | return -EOPNOTSUPP; | |
863 | ||
1da177e4 LT |
864 | return dev->ethtool_ops->set_settings(dev, &cmd); |
865 | } | |
866 | ||
97f8aefb | 867 | static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev, |
868 | void __user *useraddr) | |
1da177e4 LT |
869 | { |
870 | struct ethtool_drvinfo info; | |
76fd8593 | 871 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 872 | |
1da177e4 LT |
873 | memset(&info, 0, sizeof(info)); |
874 | info.cmd = ETHTOOL_GDRVINFO; | |
c03a14e8 | 875 | if (ops->get_drvinfo) { |
01414802 BH |
876 | ops->get_drvinfo(dev, &info); |
877 | } else if (dev->dev.parent && dev->dev.parent->driver) { | |
878 | strlcpy(info.bus_info, dev_name(dev->dev.parent), | |
879 | sizeof(info.bus_info)); | |
880 | strlcpy(info.driver, dev->dev.parent->driver->name, | |
881 | sizeof(info.driver)); | |
882 | } else { | |
883 | return -EOPNOTSUPP; | |
884 | } | |
1da177e4 | 885 | |
723b2f57 JG |
886 | /* |
887 | * this method of obtaining string set info is deprecated; | |
d17792eb | 888 | * Use ETHTOOL_GSSET_INFO instead. |
723b2f57 | 889 | */ |
c03a14e8 | 890 | if (ops->get_sset_count) { |
ff03d49f JG |
891 | int rc; |
892 | ||
893 | rc = ops->get_sset_count(dev, ETH_SS_TEST); | |
894 | if (rc >= 0) | |
895 | info.testinfo_len = rc; | |
896 | rc = ops->get_sset_count(dev, ETH_SS_STATS); | |
897 | if (rc >= 0) | |
898 | info.n_stats = rc; | |
339bf024 JG |
899 | rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); |
900 | if (rc >= 0) | |
901 | info.n_priv_flags = rc; | |
ff03d49f | 902 | } |
c03a14e8 | 903 | if (ops->get_regs_len) |
1da177e4 | 904 | info.regdump_len = ops->get_regs_len(dev); |
c03a14e8 | 905 | if (ops->get_eeprom_len) |
1da177e4 LT |
906 | info.eedump_len = ops->get_eeprom_len(dev); |
907 | ||
908 | if (copy_to_user(useraddr, &info, sizeof(info))) | |
909 | return -EFAULT; | |
910 | return 0; | |
911 | } | |
912 | ||
f5c445ed | 913 | static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, |
97f8aefb | 914 | void __user *useraddr) |
723b2f57 JG |
915 | { |
916 | struct ethtool_sset_info info; | |
723b2f57 JG |
917 | u64 sset_mask; |
918 | int i, idx = 0, n_bits = 0, ret, rc; | |
919 | u32 *info_buf = NULL; | |
920 | ||
723b2f57 JG |
921 | if (copy_from_user(&info, useraddr, sizeof(info))) |
922 | return -EFAULT; | |
923 | ||
924 | /* store copy of mask, because we zero struct later on */ | |
925 | sset_mask = info.sset_mask; | |
926 | if (!sset_mask) | |
927 | return 0; | |
928 | ||
929 | /* calculate size of return buffer */ | |
d17792eb | 930 | n_bits = hweight64(sset_mask); |
723b2f57 JG |
931 | |
932 | memset(&info, 0, sizeof(info)); | |
933 | info.cmd = ETHTOOL_GSSET_INFO; | |
934 | ||
935 | info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER); | |
936 | if (!info_buf) | |
937 | return -ENOMEM; | |
938 | ||
939 | /* | |
940 | * fill return buffer based on input bitmask and successful | |
941 | * get_sset_count return | |
942 | */ | |
943 | for (i = 0; i < 64; i++) { | |
944 | if (!(sset_mask & (1ULL << i))) | |
945 | continue; | |
946 | ||
340ae165 | 947 | rc = __ethtool_get_sset_count(dev, i); |
723b2f57 JG |
948 | if (rc >= 0) { |
949 | info.sset_mask |= (1ULL << i); | |
950 | info_buf[idx++] = rc; | |
951 | } | |
952 | } | |
953 | ||
954 | ret = -EFAULT; | |
955 | if (copy_to_user(useraddr, &info, sizeof(info))) | |
956 | goto out; | |
957 | ||
958 | useraddr += offsetof(struct ethtool_sset_info, data); | |
959 | if (copy_to_user(useraddr, info_buf, idx * sizeof(u32))) | |
960 | goto out; | |
961 | ||
962 | ret = 0; | |
963 | ||
964 | out: | |
965 | kfree(info_buf); | |
966 | return ret; | |
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 | ||
bf988435 BH |
979 | /* struct ethtool_rxnfc was originally defined for |
980 | * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data | |
981 | * members. User-space might still be using that | |
982 | * definition. */ | |
983 | if (cmd == ETHTOOL_SRXFH) | |
984 | info_size = (offsetof(struct ethtool_rxnfc, data) + | |
985 | sizeof(info.data)); | |
986 | ||
987 | if (copy_from_user(&info, useraddr, info_size)) | |
0853ad66 SB |
988 | return -EFAULT; |
989 | ||
55664f32 BH |
990 | rc = dev->ethtool_ops->set_rxnfc(dev, &info); |
991 | if (rc) | |
992 | return rc; | |
993 | ||
994 | if (cmd == ETHTOOL_SRXCLSRLINS && | |
995 | copy_to_user(useraddr, &info, info_size)) | |
996 | return -EFAULT; | |
997 | ||
998 | return 0; | |
0853ad66 SB |
999 | } |
1000 | ||
97f8aefb | 1001 | static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, |
bf988435 | 1002 | u32 cmd, void __user *useraddr) |
0853ad66 SB |
1003 | { |
1004 | struct ethtool_rxnfc info; | |
bf988435 | 1005 | size_t info_size = sizeof(info); |
59089d8d SB |
1006 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1007 | int ret; | |
1008 | void *rule_buf = NULL; | |
0853ad66 | 1009 | |
59089d8d | 1010 | if (!ops->get_rxnfc) |
0853ad66 SB |
1011 | return -EOPNOTSUPP; |
1012 | ||
bf988435 BH |
1013 | /* struct ethtool_rxnfc was originally defined for |
1014 | * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data | |
1015 | * members. User-space might still be using that | |
1016 | * definition. */ | |
1017 | if (cmd == ETHTOOL_GRXFH) | |
1018 | info_size = (offsetof(struct ethtool_rxnfc, data) + | |
1019 | sizeof(info.data)); | |
1020 | ||
1021 | if (copy_from_user(&info, useraddr, info_size)) | |
0853ad66 SB |
1022 | return -EFAULT; |
1023 | ||
59089d8d SB |
1024 | if (info.cmd == ETHTOOL_GRXCLSRLALL) { |
1025 | if (info.rule_cnt > 0) { | |
db048b69 | 1026 | if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) |
ae6df5f9 | 1027 | rule_buf = kzalloc(info.rule_cnt * sizeof(u32), |
db048b69 | 1028 | GFP_USER); |
59089d8d SB |
1029 | if (!rule_buf) |
1030 | return -ENOMEM; | |
1031 | } | |
1032 | } | |
0853ad66 | 1033 | |
59089d8d SB |
1034 | ret = ops->get_rxnfc(dev, &info, rule_buf); |
1035 | if (ret < 0) | |
1036 | goto err_out; | |
1037 | ||
1038 | ret = -EFAULT; | |
bf988435 | 1039 | if (copy_to_user(useraddr, &info, info_size)) |
59089d8d SB |
1040 | goto err_out; |
1041 | ||
1042 | if (rule_buf) { | |
1043 | useraddr += offsetof(struct ethtool_rxnfc, rule_locs); | |
1044 | if (copy_to_user(useraddr, rule_buf, | |
1045 | info.rule_cnt * sizeof(u32))) | |
1046 | goto err_out; | |
1047 | } | |
1048 | ret = 0; | |
1049 | ||
1050 | err_out: | |
c9caceca | 1051 | kfree(rule_buf); |
59089d8d SB |
1052 | |
1053 | return ret; | |
0853ad66 SB |
1054 | } |
1055 | ||
3de0b592 VD |
1056 | static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, |
1057 | struct ethtool_rxnfc *rx_rings, | |
1058 | u32 size) | |
1059 | { | |
fb95cd8d | 1060 | int i; |
3de0b592 VD |
1061 | |
1062 | if (copy_from_user(indir, useraddr, size * sizeof(indir[0]))) | |
fb95cd8d | 1063 | return -EFAULT; |
3de0b592 VD |
1064 | |
1065 | /* Validate ring indices */ | |
fb95cd8d BH |
1066 | for (i = 0; i < size; i++) |
1067 | if (indir[i] >= rx_rings->data) | |
1068 | return -EINVAL; | |
1069 | ||
1070 | return 0; | |
3de0b592 VD |
1071 | } |
1072 | ||
ba905f5e | 1073 | u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; |
960fb622 ED |
1074 | |
1075 | void netdev_rss_key_fill(void *buffer, size_t len) | |
1076 | { | |
1077 | BUG_ON(len > sizeof(netdev_rss_key)); | |
1078 | net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); | |
1079 | memcpy(buffer, netdev_rss_key, len); | |
1080 | } | |
1081 | EXPORT_SYMBOL(netdev_rss_key_fill); | |
1082 | ||
d4ab4286 KJ |
1083 | static int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max) |
1084 | { | |
1085 | u32 dev_size, current_max = 0; | |
1086 | u32 *indir; | |
1087 | int ret; | |
1088 | ||
1089 | if (!dev->ethtool_ops->get_rxfh_indir_size || | |
1090 | !dev->ethtool_ops->get_rxfh) | |
1091 | return -EOPNOTSUPP; | |
1092 | dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev); | |
1093 | if (dev_size == 0) | |
1094 | return -EOPNOTSUPP; | |
1095 | ||
1096 | indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); | |
1097 | if (!indir) | |
1098 | return -ENOMEM; | |
1099 | ||
1100 | ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL); | |
1101 | if (ret) | |
1102 | goto out; | |
1103 | ||
1104 | while (dev_size--) | |
1105 | current_max = max(current_max, indir[dev_size]); | |
1106 | ||
1107 | *max = current_max; | |
1108 | ||
1109 | out: | |
1110 | kfree(indir); | |
1111 | return ret; | |
1112 | } | |
1113 | ||
a5b6ee29 BH |
1114 | static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, |
1115 | void __user *useraddr) | |
1116 | { | |
7850f63f BH |
1117 | u32 user_size, dev_size; |
1118 | u32 *indir; | |
a5b6ee29 BH |
1119 | int ret; |
1120 | ||
7850f63f | 1121 | if (!dev->ethtool_ops->get_rxfh_indir_size || |
fe62d001 | 1122 | !dev->ethtool_ops->get_rxfh) |
7850f63f BH |
1123 | return -EOPNOTSUPP; |
1124 | dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev); | |
1125 | if (dev_size == 0) | |
a5b6ee29 BH |
1126 | return -EOPNOTSUPP; |
1127 | ||
7850f63f | 1128 | if (copy_from_user(&user_size, |
a5b6ee29 | 1129 | useraddr + offsetof(struct ethtool_rxfh_indir, size), |
7850f63f | 1130 | sizeof(user_size))) |
a5b6ee29 BH |
1131 | return -EFAULT; |
1132 | ||
7850f63f BH |
1133 | if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), |
1134 | &dev_size, sizeof(dev_size))) | |
1135 | return -EFAULT; | |
1136 | ||
1137 | /* If the user buffer size is 0, this is just a query for the | |
1138 | * device table size. Otherwise, if it's smaller than the | |
1139 | * device table size it's an error. | |
1140 | */ | |
1141 | if (user_size < dev_size) | |
1142 | return user_size == 0 ? 0 : -EINVAL; | |
1143 | ||
1144 | indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); | |
a5b6ee29 BH |
1145 | if (!indir) |
1146 | return -ENOMEM; | |
1147 | ||
892311f6 | 1148 | ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL); |
a5b6ee29 BH |
1149 | if (ret) |
1150 | goto out; | |
1151 | ||
7850f63f BH |
1152 | if (copy_to_user(useraddr + |
1153 | offsetof(struct ethtool_rxfh_indir, ring_index[0]), | |
1154 | indir, dev_size * sizeof(indir[0]))) | |
a5b6ee29 BH |
1155 | ret = -EFAULT; |
1156 | ||
1157 | out: | |
1158 | kfree(indir); | |
1159 | return ret; | |
1160 | } | |
1161 | ||
1162 | static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, | |
1163 | void __user *useraddr) | |
1164 | { | |
7850f63f BH |
1165 | struct ethtool_rxnfc rx_rings; |
1166 | u32 user_size, dev_size, i; | |
1167 | u32 *indir; | |
c03a14e8 | 1168 | const struct ethtool_ops *ops = dev->ethtool_ops; |
a5b6ee29 | 1169 | int ret; |
3de0b592 | 1170 | u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); |
a5b6ee29 | 1171 | |
fe62d001 | 1172 | if (!ops->get_rxfh_indir_size || !ops->set_rxfh || |
c03a14e8 | 1173 | !ops->get_rxnfc) |
7850f63f | 1174 | return -EOPNOTSUPP; |
c03a14e8 JP |
1175 | |
1176 | dev_size = ops->get_rxfh_indir_size(dev); | |
7850f63f | 1177 | if (dev_size == 0) |
a5b6ee29 BH |
1178 | return -EOPNOTSUPP; |
1179 | ||
7850f63f | 1180 | if (copy_from_user(&user_size, |
a5b6ee29 | 1181 | useraddr + offsetof(struct ethtool_rxfh_indir, size), |
7850f63f | 1182 | sizeof(user_size))) |
a5b6ee29 BH |
1183 | return -EFAULT; |
1184 | ||
278bc429 | 1185 | if (user_size != 0 && user_size != dev_size) |
7850f63f BH |
1186 | return -EINVAL; |
1187 | ||
1188 | indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); | |
a5b6ee29 BH |
1189 | if (!indir) |
1190 | return -ENOMEM; | |
1191 | ||
7850f63f | 1192 | rx_rings.cmd = ETHTOOL_GRXRINGS; |
c03a14e8 | 1193 | ret = ops->get_rxnfc(dev, &rx_rings, NULL); |
7850f63f BH |
1194 | if (ret) |
1195 | goto out; | |
278bc429 BH |
1196 | |
1197 | if (user_size == 0) { | |
1198 | for (i = 0; i < dev_size; i++) | |
1199 | indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); | |
1200 | } else { | |
3de0b592 VD |
1201 | ret = ethtool_copy_validate_indir(indir, |
1202 | useraddr + ringidx_offset, | |
1203 | &rx_rings, | |
1204 | dev_size); | |
1205 | if (ret) | |
1206 | goto out; | |
1207 | } | |
1208 | ||
892311f6 | 1209 | ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE); |
d4ab4286 KJ |
1210 | if (ret) |
1211 | goto out; | |
1212 | ||
1213 | /* indicate whether rxfh was set to default */ | |
1214 | if (user_size == 0) | |
1215 | dev->priv_flags &= ~IFF_RXFH_CONFIGURED; | |
1216 | else | |
1217 | dev->priv_flags |= IFF_RXFH_CONFIGURED; | |
3de0b592 VD |
1218 | |
1219 | out: | |
1220 | kfree(indir); | |
1221 | return ret; | |
1222 | } | |
1223 | ||
1224 | static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, | |
1225 | void __user *useraddr) | |
1226 | { | |
1227 | int ret; | |
1228 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
f062a384 | 1229 | u32 user_indir_size, user_key_size; |
3de0b592 | 1230 | u32 dev_indir_size = 0, dev_key_size = 0; |
f062a384 | 1231 | struct ethtool_rxfh rxfh; |
3de0b592 | 1232 | u32 total_size; |
f062a384 | 1233 | u32 indir_bytes; |
3de0b592 | 1234 | u32 *indir = NULL; |
892311f6 | 1235 | u8 dev_hfunc = 0; |
3de0b592 VD |
1236 | u8 *hkey = NULL; |
1237 | u8 *rss_config; | |
1238 | ||
892311f6 | 1239 | if (!ops->get_rxfh) |
3de0b592 VD |
1240 | return -EOPNOTSUPP; |
1241 | ||
1242 | if (ops->get_rxfh_indir_size) | |
1243 | dev_indir_size = ops->get_rxfh_indir_size(dev); | |
3de0b592 VD |
1244 | if (ops->get_rxfh_key_size) |
1245 | dev_key_size = ops->get_rxfh_key_size(dev); | |
1246 | ||
f062a384 | 1247 | if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) |
3de0b592 | 1248 | return -EFAULT; |
f062a384 BH |
1249 | user_indir_size = rxfh.indir_size; |
1250 | user_key_size = rxfh.key_size; | |
3de0b592 | 1251 | |
f062a384 | 1252 | /* Check that reserved fields are 0 for now */ |
892311f6 EP |
1253 | if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] || |
1254 | rxfh.rsvd8[2] || rxfh.rsvd32) | |
f062a384 BH |
1255 | return -EINVAL; |
1256 | ||
1257 | rxfh.indir_size = dev_indir_size; | |
1258 | rxfh.key_size = dev_key_size; | |
1259 | if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) | |
3de0b592 VD |
1260 | return -EFAULT; |
1261 | ||
3de0b592 VD |
1262 | if ((user_indir_size && (user_indir_size != dev_indir_size)) || |
1263 | (user_key_size && (user_key_size != dev_key_size))) | |
1264 | return -EINVAL; | |
1265 | ||
1266 | indir_bytes = user_indir_size * sizeof(indir[0]); | |
1267 | total_size = indir_bytes + user_key_size; | |
1268 | rss_config = kzalloc(total_size, GFP_USER); | |
1269 | if (!rss_config) | |
1270 | return -ENOMEM; | |
1271 | ||
1272 | if (user_indir_size) | |
1273 | indir = (u32 *)rss_config; | |
1274 | ||
1275 | if (user_key_size) | |
1276 | hkey = rss_config + indir_bytes; | |
1277 | ||
892311f6 EP |
1278 | ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc); |
1279 | if (ret) | |
1280 | goto out; | |
3de0b592 | 1281 | |
892311f6 EP |
1282 | if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), |
1283 | &dev_hfunc, sizeof(rxfh.hfunc))) { | |
1284 | ret = -EFAULT; | |
1285 | } else if (copy_to_user(useraddr + | |
1286 | offsetof(struct ethtool_rxfh, rss_config[0]), | |
1287 | rss_config, total_size)) { | |
1288 | ret = -EFAULT; | |
1289 | } | |
1290 | out: | |
3de0b592 VD |
1291 | kfree(rss_config); |
1292 | ||
1293 | return ret; | |
1294 | } | |
1295 | ||
1296 | static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, | |
1297 | void __user *useraddr) | |
1298 | { | |
1299 | int ret; | |
1300 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
1301 | struct ethtool_rxnfc rx_rings; | |
f062a384 BH |
1302 | struct ethtool_rxfh rxfh; |
1303 | u32 dev_indir_size = 0, dev_key_size = 0, i; | |
3de0b592 VD |
1304 | u32 *indir = NULL, indir_bytes = 0; |
1305 | u8 *hkey = NULL; | |
1306 | u8 *rss_config; | |
3de0b592 VD |
1307 | u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); |
1308 | ||
892311f6 | 1309 | if (!ops->get_rxnfc || !ops->set_rxfh) |
3de0b592 VD |
1310 | return -EOPNOTSUPP; |
1311 | ||
1312 | if (ops->get_rxfh_indir_size) | |
1313 | dev_indir_size = ops->get_rxfh_indir_size(dev); | |
3de0b592 | 1314 | if (ops->get_rxfh_key_size) |
d340c862 | 1315 | dev_key_size = ops->get_rxfh_key_size(dev); |
3de0b592 | 1316 | |
f062a384 | 1317 | if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) |
3de0b592 VD |
1318 | return -EFAULT; |
1319 | ||
f062a384 | 1320 | /* Check that reserved fields are 0 for now */ |
892311f6 EP |
1321 | if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] || |
1322 | rxfh.rsvd8[2] || rxfh.rsvd32) | |
f062a384 BH |
1323 | return -EINVAL; |
1324 | ||
892311f6 EP |
1325 | /* If either indir, hash key or function is valid, proceed further. |
1326 | * Must request at least one change: indir size, hash key or function. | |
3de0b592 | 1327 | */ |
f062a384 BH |
1328 | if ((rxfh.indir_size && |
1329 | rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && | |
1330 | rxfh.indir_size != dev_indir_size) || | |
1331 | (rxfh.key_size && (rxfh.key_size != dev_key_size)) || | |
1332 | (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && | |
892311f6 | 1333 | rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE)) |
3de0b592 VD |
1334 | return -EINVAL; |
1335 | ||
f062a384 | 1336 | if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) |
3de0b592 VD |
1337 | indir_bytes = dev_indir_size * sizeof(indir[0]); |
1338 | ||
f062a384 | 1339 | rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER); |
3de0b592 VD |
1340 | if (!rss_config) |
1341 | return -ENOMEM; | |
1342 | ||
1343 | rx_rings.cmd = ETHTOOL_GRXRINGS; | |
1344 | ret = ops->get_rxnfc(dev, &rx_rings, NULL); | |
1345 | if (ret) | |
1346 | goto out; | |
1347 | ||
f062a384 BH |
1348 | /* rxfh.indir_size == 0 means reset the indir table to default. |
1349 | * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. | |
3de0b592 | 1350 | */ |
f062a384 BH |
1351 | if (rxfh.indir_size && |
1352 | rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { | |
3de0b592 VD |
1353 | indir = (u32 *)rss_config; |
1354 | ret = ethtool_copy_validate_indir(indir, | |
1355 | useraddr + rss_cfg_offset, | |
1356 | &rx_rings, | |
f062a384 | 1357 | rxfh.indir_size); |
3de0b592 | 1358 | if (ret) |
7850f63f | 1359 | goto out; |
f062a384 | 1360 | } else if (rxfh.indir_size == 0) { |
3de0b592 VD |
1361 | indir = (u32 *)rss_config; |
1362 | for (i = 0; i < dev_indir_size; i++) | |
1363 | indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); | |
1364 | } | |
278bc429 | 1365 | |
f062a384 | 1366 | if (rxfh.key_size) { |
3de0b592 VD |
1367 | hkey = rss_config + indir_bytes; |
1368 | if (copy_from_user(hkey, | |
1369 | useraddr + rss_cfg_offset + indir_bytes, | |
f062a384 | 1370 | rxfh.key_size)) { |
3de0b592 VD |
1371 | ret = -EFAULT; |
1372 | goto out; | |
278bc429 | 1373 | } |
7850f63f BH |
1374 | } |
1375 | ||
892311f6 | 1376 | ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc); |
d4ab4286 KJ |
1377 | if (ret) |
1378 | goto out; | |
1379 | ||
1380 | /* indicate whether rxfh was set to default */ | |
1381 | if (rxfh.indir_size == 0) | |
1382 | dev->priv_flags &= ~IFF_RXFH_CONFIGURED; | |
1383 | else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) | |
1384 | dev->priv_flags |= IFF_RXFH_CONFIGURED; | |
a5b6ee29 BH |
1385 | |
1386 | out: | |
3de0b592 | 1387 | kfree(rss_config); |
a5b6ee29 BH |
1388 | return ret; |
1389 | } | |
1390 | ||
1da177e4 LT |
1391 | static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) |
1392 | { | |
1393 | struct ethtool_regs regs; | |
76fd8593 | 1394 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 LT |
1395 | void *regbuf; |
1396 | int reglen, ret; | |
1397 | ||
1398 | if (!ops->get_regs || !ops->get_regs_len) | |
1399 | return -EOPNOTSUPP; | |
1400 | ||
1401 | if (copy_from_user(®s, useraddr, sizeof(regs))) | |
1402 | return -EFAULT; | |
1403 | ||
1404 | reglen = ops->get_regs_len(dev); | |
1405 | if (regs.len > reglen) | |
1406 | regs.len = reglen; | |
1407 | ||
b7c7d01a | 1408 | regbuf = vzalloc(reglen); |
67ae7cf1 | 1409 | if (reglen && !regbuf) |
1da177e4 LT |
1410 | return -ENOMEM; |
1411 | ||
1412 | ops->get_regs(dev, ®s, regbuf); | |
1413 | ||
1414 | ret = -EFAULT; | |
1415 | if (copy_to_user(useraddr, ®s, sizeof(regs))) | |
1416 | goto out; | |
1417 | useraddr += offsetof(struct ethtool_regs, data); | |
67ae7cf1 | 1418 | if (regbuf && copy_to_user(useraddr, regbuf, regs.len)) |
1da177e4 LT |
1419 | goto out; |
1420 | ret = 0; | |
1421 | ||
1422 | out: | |
a77f5db3 | 1423 | vfree(regbuf); |
1da177e4 LT |
1424 | return ret; |
1425 | } | |
1426 | ||
d73d3a8c BH |
1427 | static int ethtool_reset(struct net_device *dev, char __user *useraddr) |
1428 | { | |
1429 | struct ethtool_value reset; | |
1430 | int ret; | |
1431 | ||
1432 | if (!dev->ethtool_ops->reset) | |
1433 | return -EOPNOTSUPP; | |
1434 | ||
1435 | if (copy_from_user(&reset, useraddr, sizeof(reset))) | |
1436 | return -EFAULT; | |
1437 | ||
1438 | ret = dev->ethtool_ops->reset(dev, &reset.data); | |
1439 | if (ret) | |
1440 | return ret; | |
1441 | ||
1442 | if (copy_to_user(useraddr, &reset, sizeof(reset))) | |
1443 | return -EFAULT; | |
1444 | return 0; | |
1445 | } | |
1446 | ||
1da177e4 LT |
1447 | static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) |
1448 | { | |
8e557421 | 1449 | struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL }; |
1da177e4 LT |
1450 | |
1451 | if (!dev->ethtool_ops->get_wol) | |
1452 | return -EOPNOTSUPP; | |
1453 | ||
1454 | dev->ethtool_ops->get_wol(dev, &wol); | |
1455 | ||
1456 | if (copy_to_user(useraddr, &wol, sizeof(wol))) | |
1457 | return -EFAULT; | |
1458 | return 0; | |
1459 | } | |
1460 | ||
1461 | static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) | |
1462 | { | |
1463 | struct ethtool_wolinfo wol; | |
1464 | ||
1465 | if (!dev->ethtool_ops->set_wol) | |
1466 | return -EOPNOTSUPP; | |
1467 | ||
1468 | if (copy_from_user(&wol, useraddr, sizeof(wol))) | |
1469 | return -EFAULT; | |
1470 | ||
1471 | return dev->ethtool_ops->set_wol(dev, &wol); | |
1472 | } | |
1473 | ||
80f12ecc YM |
1474 | static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) |
1475 | { | |
1476 | struct ethtool_eee edata; | |
1477 | int rc; | |
1478 | ||
1479 | if (!dev->ethtool_ops->get_eee) | |
1480 | return -EOPNOTSUPP; | |
1481 | ||
1482 | memset(&edata, 0, sizeof(struct ethtool_eee)); | |
1483 | edata.cmd = ETHTOOL_GEEE; | |
1484 | rc = dev->ethtool_ops->get_eee(dev, &edata); | |
1485 | ||
1486 | if (rc) | |
1487 | return rc; | |
1488 | ||
1489 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
1490 | return -EFAULT; | |
1491 | ||
1492 | return 0; | |
1493 | } | |
1494 | ||
1495 | static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) | |
1496 | { | |
1497 | struct ethtool_eee edata; | |
1498 | ||
1499 | if (!dev->ethtool_ops->set_eee) | |
1500 | return -EOPNOTSUPP; | |
1501 | ||
1502 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
1503 | return -EFAULT; | |
1504 | ||
1505 | return dev->ethtool_ops->set_eee(dev, &edata); | |
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 }; | |
1519 | ||
1520 | if (!dev->ethtool_ops->get_link) | |
1521 | return -EOPNOTSUPP; | |
1522 | ||
1523 | edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev); | |
1524 | ||
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 | ||
b131dd5d | 1552 | data = kmalloc(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; | |
1563 | if (copy_to_user(userbuf, data, eeprom.len)) { | |
1564 | ret = -EFAULT; | |
1565 | break; | |
1566 | } | |
1567 | userbuf += eeprom.len; | |
1568 | eeprom.offset += eeprom.len; | |
1569 | bytes_remaining -= eeprom.len; | |
1570 | } | |
1da177e4 | 1571 | |
c5835df9 MSB |
1572 | eeprom.len = userbuf - (useraddr + sizeof(eeprom)); |
1573 | eeprom.offset -= eeprom.len; | |
1574 | if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) | |
1575 | ret = -EFAULT; | |
1576 | ||
1da177e4 LT |
1577 | kfree(data); |
1578 | return ret; | |
1579 | } | |
1580 | ||
081d094e BH |
1581 | static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) |
1582 | { | |
1583 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
1584 | ||
e0fb6fb6 GR |
1585 | if (!ops->get_eeprom || !ops->get_eeprom_len || |
1586 | !ops->get_eeprom_len(dev)) | |
081d094e BH |
1587 | return -EOPNOTSUPP; |
1588 | ||
1589 | return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, | |
1590 | ops->get_eeprom_len(dev)); | |
1591 | } | |
1592 | ||
1da177e4 LT |
1593 | static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) |
1594 | { | |
1595 | struct ethtool_eeprom eeprom; | |
76fd8593 | 1596 | const struct ethtool_ops *ops = dev->ethtool_ops; |
b131dd5d MSB |
1597 | void __user *userbuf = useraddr + sizeof(eeprom); |
1598 | u32 bytes_remaining; | |
1da177e4 | 1599 | u8 *data; |
b131dd5d | 1600 | int ret = 0; |
1da177e4 | 1601 | |
e0fb6fb6 GR |
1602 | if (!ops->set_eeprom || !ops->get_eeprom_len || |
1603 | !ops->get_eeprom_len(dev)) | |
1da177e4 LT |
1604 | return -EOPNOTSUPP; |
1605 | ||
1606 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) | |
1607 | return -EFAULT; | |
1608 | ||
1609 | /* Check for wrap and zero */ | |
1610 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
1611 | return -EINVAL; | |
1612 | ||
1613 | /* Check for exceeding total eeprom len */ | |
1614 | if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) | |
1615 | return -EINVAL; | |
1616 | ||
b131dd5d | 1617 | data = kmalloc(PAGE_SIZE, GFP_USER); |
1da177e4 LT |
1618 | if (!data) |
1619 | return -ENOMEM; | |
1620 | ||
b131dd5d MSB |
1621 | bytes_remaining = eeprom.len; |
1622 | while (bytes_remaining > 0) { | |
1623 | eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); | |
1624 | ||
1625 | if (copy_from_user(data, userbuf, eeprom.len)) { | |
1626 | ret = -EFAULT; | |
1627 | break; | |
1628 | } | |
1629 | ret = ops->set_eeprom(dev, &eeprom, data); | |
1630 | if (ret) | |
1631 | break; | |
1632 | userbuf += eeprom.len; | |
1633 | eeprom.offset += eeprom.len; | |
1634 | bytes_remaining -= eeprom.len; | |
1635 | } | |
1da177e4 | 1636 | |
1da177e4 LT |
1637 | kfree(data); |
1638 | return ret; | |
1639 | } | |
1640 | ||
97f8aefb | 1641 | static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, |
1642 | void __user *useraddr) | |
1da177e4 | 1643 | { |
8e557421 | 1644 | struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; |
1da177e4 LT |
1645 | |
1646 | if (!dev->ethtool_ops->get_coalesce) | |
1647 | return -EOPNOTSUPP; | |
1648 | ||
1649 | dev->ethtool_ops->get_coalesce(dev, &coalesce); | |
1650 | ||
1651 | if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) | |
1652 | return -EFAULT; | |
1653 | return 0; | |
1654 | } | |
1655 | ||
97f8aefb | 1656 | static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, |
1657 | void __user *useraddr) | |
1da177e4 LT |
1658 | { |
1659 | struct ethtool_coalesce coalesce; | |
1660 | ||
fa04ae5c | 1661 | if (!dev->ethtool_ops->set_coalesce) |
1da177e4 LT |
1662 | return -EOPNOTSUPP; |
1663 | ||
1664 | if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) | |
1665 | return -EFAULT; | |
1666 | ||
1667 | return dev->ethtool_ops->set_coalesce(dev, &coalesce); | |
1668 | } | |
1669 | ||
1670 | static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) | |
1671 | { | |
8e557421 | 1672 | struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; |
1da177e4 LT |
1673 | |
1674 | if (!dev->ethtool_ops->get_ringparam) | |
1675 | return -EOPNOTSUPP; | |
1676 | ||
1677 | dev->ethtool_ops->get_ringparam(dev, &ringparam); | |
1678 | ||
1679 | if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) | |
1680 | return -EFAULT; | |
1681 | return 0; | |
1682 | } | |
1683 | ||
1684 | static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) | |
1685 | { | |
1686 | struct ethtool_ringparam ringparam; | |
1687 | ||
1688 | if (!dev->ethtool_ops->set_ringparam) | |
1689 | return -EOPNOTSUPP; | |
1690 | ||
1691 | if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) | |
1692 | return -EFAULT; | |
1693 | ||
1694 | return dev->ethtool_ops->set_ringparam(dev, &ringparam); | |
1695 | } | |
1696 | ||
8b5933c3 | 1697 | static noinline_for_stack int ethtool_get_channels(struct net_device *dev, |
1698 | void __user *useraddr) | |
1699 | { | |
1700 | struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; | |
1701 | ||
1702 | if (!dev->ethtool_ops->get_channels) | |
1703 | return -EOPNOTSUPP; | |
1704 | ||
1705 | dev->ethtool_ops->get_channels(dev, &channels); | |
1706 | ||
1707 | if (copy_to_user(useraddr, &channels, sizeof(channels))) | |
1708 | return -EFAULT; | |
1709 | return 0; | |
1710 | } | |
1711 | ||
1712 | static noinline_for_stack int ethtool_set_channels(struct net_device *dev, | |
1713 | void __user *useraddr) | |
1714 | { | |
8bf36862 | 1715 | struct ethtool_channels channels, max; |
d4ab4286 | 1716 | u32 max_rx_in_use = 0; |
8b5933c3 | 1717 | |
8bf36862 | 1718 | if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) |
8b5933c3 | 1719 | return -EOPNOTSUPP; |
1720 | ||
1721 | if (copy_from_user(&channels, useraddr, sizeof(channels))) | |
1722 | return -EFAULT; | |
1723 | ||
8bf36862 KJ |
1724 | dev->ethtool_ops->get_channels(dev, &max); |
1725 | ||
1726 | /* ensure new counts are within the maximums */ | |
1727 | if ((channels.rx_count > max.max_rx) || | |
1728 | (channels.tx_count > max.max_tx) || | |
1729 | (channels.combined_count > max.max_combined) || | |
1730 | (channels.other_count > max.max_other)) | |
1731 | return -EINVAL; | |
1732 | ||
d4ab4286 KJ |
1733 | /* ensure the new Rx count fits within the configured Rx flow |
1734 | * indirection table settings */ | |
1735 | if (netif_is_rxfh_configured(dev) && | |
1736 | !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) && | |
1737 | (channels.combined_count + channels.rx_count) <= max_rx_in_use) | |
1738 | return -EINVAL; | |
1739 | ||
8b5933c3 | 1740 | return dev->ethtool_ops->set_channels(dev, &channels); |
1741 | } | |
1742 | ||
1da177e4 LT |
1743 | static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) |
1744 | { | |
1745 | struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM }; | |
1746 | ||
1747 | if (!dev->ethtool_ops->get_pauseparam) | |
1748 | return -EOPNOTSUPP; | |
1749 | ||
1750 | dev->ethtool_ops->get_pauseparam(dev, &pauseparam); | |
1751 | ||
1752 | if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) | |
1753 | return -EFAULT; | |
1754 | return 0; | |
1755 | } | |
1756 | ||
1757 | static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) | |
1758 | { | |
1759 | struct ethtool_pauseparam pauseparam; | |
1760 | ||
e1b90c41 | 1761 | if (!dev->ethtool_ops->set_pauseparam) |
1da177e4 LT |
1762 | return -EOPNOTSUPP; |
1763 | ||
1764 | if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) | |
1765 | return -EFAULT; | |
1766 | ||
1767 | return dev->ethtool_ops->set_pauseparam(dev, &pauseparam); | |
1768 | } | |
1769 | ||
1da177e4 LT |
1770 | static int ethtool_self_test(struct net_device *dev, char __user *useraddr) |
1771 | { | |
1772 | struct ethtool_test test; | |
76fd8593 | 1773 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 1774 | u64 *data; |
ff03d49f | 1775 | int ret, test_len; |
1da177e4 | 1776 | |
a9828ec6 | 1777 | if (!ops->self_test || !ops->get_sset_count) |
1da177e4 LT |
1778 | return -EOPNOTSUPP; |
1779 | ||
a9828ec6 | 1780 | test_len = ops->get_sset_count(dev, ETH_SS_TEST); |
ff03d49f JG |
1781 | if (test_len < 0) |
1782 | return test_len; | |
1783 | WARN_ON(test_len == 0); | |
1784 | ||
1da177e4 LT |
1785 | if (copy_from_user(&test, useraddr, sizeof(test))) |
1786 | return -EFAULT; | |
1787 | ||
ff03d49f JG |
1788 | test.len = test_len; |
1789 | data = kmalloc(test_len * sizeof(u64), GFP_USER); | |
1da177e4 LT |
1790 | if (!data) |
1791 | return -ENOMEM; | |
1792 | ||
1793 | ops->self_test(dev, &test, data); | |
1794 | ||
1795 | ret = -EFAULT; | |
1796 | if (copy_to_user(useraddr, &test, sizeof(test))) | |
1797 | goto out; | |
1798 | useraddr += sizeof(test); | |
1799 | if (copy_to_user(useraddr, data, test.len * sizeof(u64))) | |
1800 | goto out; | |
1801 | ret = 0; | |
1802 | ||
1803 | out: | |
1804 | kfree(data); | |
1805 | return ret; | |
1806 | } | |
1807 | ||
1808 | static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) | |
1809 | { | |
1810 | struct ethtool_gstrings gstrings; | |
1da177e4 LT |
1811 | u8 *data; |
1812 | int ret; | |
1813 | ||
1da177e4 LT |
1814 | if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) |
1815 | return -EFAULT; | |
1816 | ||
340ae165 | 1817 | ret = __ethtool_get_sset_count(dev, gstrings.string_set); |
a9828ec6 BH |
1818 | if (ret < 0) |
1819 | return ret; | |
1820 | ||
1821 | gstrings.len = ret; | |
1da177e4 | 1822 | |
077cb37f | 1823 | data = kcalloc(gstrings.len, ETH_GSTRING_LEN, GFP_USER); |
1da177e4 LT |
1824 | if (!data) |
1825 | return -ENOMEM; | |
1826 | ||
340ae165 | 1827 | __ethtool_get_strings(dev, gstrings.string_set, data); |
1da177e4 LT |
1828 | |
1829 | ret = -EFAULT; | |
1830 | if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) | |
1831 | goto out; | |
1832 | useraddr += sizeof(gstrings); | |
1833 | if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN)) | |
1834 | goto out; | |
1835 | ret = 0; | |
1836 | ||
340ae165 | 1837 | out: |
1da177e4 LT |
1838 | kfree(data); |
1839 | return ret; | |
1840 | } | |
1841 | ||
1842 | static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) | |
1843 | { | |
1844 | struct ethtool_value id; | |
68f512f2 | 1845 | static bool busy; |
c03a14e8 | 1846 | const struct ethtool_ops *ops = dev->ethtool_ops; |
68f512f2 | 1847 | int rc; |
1da177e4 | 1848 | |
c03a14e8 | 1849 | if (!ops->set_phys_id) |
1da177e4 LT |
1850 | return -EOPNOTSUPP; |
1851 | ||
68f512f2 BH |
1852 | if (busy) |
1853 | return -EBUSY; | |
1854 | ||
1da177e4 LT |
1855 | if (copy_from_user(&id, useraddr, sizeof(id))) |
1856 | return -EFAULT; | |
1857 | ||
c03a14e8 | 1858 | rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); |
fce55922 | 1859 | if (rc < 0) |
68f512f2 BH |
1860 | return rc; |
1861 | ||
1862 | /* Drop the RTNL lock while waiting, but prevent reentry or | |
1863 | * removal of the device. | |
1864 | */ | |
1865 | busy = true; | |
1866 | dev_hold(dev); | |
1867 | rtnl_unlock(); | |
1868 | ||
1869 | if (rc == 0) { | |
1870 | /* Driver will handle this itself */ | |
1871 | schedule_timeout_interruptible( | |
143780c6 | 1872 | id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); |
68f512f2 | 1873 | } else { |
fce55922 AB |
1874 | /* Driver expects to be called at twice the frequency in rc */ |
1875 | int n = rc * 2, i, interval = HZ / n; | |
1876 | ||
1877 | /* Count down seconds */ | |
68f512f2 | 1878 | do { |
fce55922 AB |
1879 | /* Count down iterations per second */ |
1880 | i = n; | |
1881 | do { | |
1882 | rtnl_lock(); | |
c03a14e8 | 1883 | rc = ops->set_phys_id(dev, |
fce55922 AB |
1884 | (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); |
1885 | rtnl_unlock(); | |
1886 | if (rc) | |
1887 | break; | |
1888 | schedule_timeout_interruptible(interval); | |
1889 | } while (!signal_pending(current) && --i != 0); | |
68f512f2 BH |
1890 | } while (!signal_pending(current) && |
1891 | (id.data == 0 || --id.data != 0)); | |
1892 | } | |
1893 | ||
1894 | rtnl_lock(); | |
1895 | dev_put(dev); | |
1896 | busy = false; | |
1897 | ||
c03a14e8 | 1898 | (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); |
68f512f2 | 1899 | return rc; |
1da177e4 LT |
1900 | } |
1901 | ||
1902 | static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) | |
1903 | { | |
1904 | struct ethtool_stats stats; | |
76fd8593 | 1905 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 1906 | u64 *data; |
ff03d49f | 1907 | int ret, n_stats; |
1da177e4 | 1908 | |
a9828ec6 | 1909 | if (!ops->get_ethtool_stats || !ops->get_sset_count) |
1da177e4 LT |
1910 | return -EOPNOTSUPP; |
1911 | ||
a9828ec6 | 1912 | n_stats = ops->get_sset_count(dev, ETH_SS_STATS); |
ff03d49f JG |
1913 | if (n_stats < 0) |
1914 | return n_stats; | |
1915 | WARN_ON(n_stats == 0); | |
1916 | ||
1da177e4 LT |
1917 | if (copy_from_user(&stats, useraddr, sizeof(stats))) |
1918 | return -EFAULT; | |
1919 | ||
ff03d49f JG |
1920 | stats.n_stats = n_stats; |
1921 | data = kmalloc(n_stats * sizeof(u64), GFP_USER); | |
1da177e4 LT |
1922 | if (!data) |
1923 | return -ENOMEM; | |
1924 | ||
1925 | ops->get_ethtool_stats(dev, &stats, data); | |
1926 | ||
1927 | ret = -EFAULT; | |
1928 | if (copy_to_user(useraddr, &stats, sizeof(stats))) | |
1929 | goto out; | |
1930 | useraddr += sizeof(stats); | |
1931 | if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64))) | |
1932 | goto out; | |
1933 | ret = 0; | |
1934 | ||
1935 | out: | |
1936 | kfree(data); | |
1937 | return ret; | |
1938 | } | |
1939 | ||
f3a40945 AL |
1940 | static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) |
1941 | { | |
1942 | struct ethtool_stats stats; | |
1943 | struct phy_device *phydev = dev->phydev; | |
1944 | u64 *data; | |
1945 | int ret, n_stats; | |
1946 | ||
1947 | if (!phydev) | |
1948 | return -EOPNOTSUPP; | |
1949 | ||
1950 | n_stats = phy_get_sset_count(phydev); | |
1951 | ||
1952 | if (n_stats < 0) | |
1953 | return n_stats; | |
1954 | WARN_ON(n_stats == 0); | |
1955 | ||
1956 | if (copy_from_user(&stats, useraddr, sizeof(stats))) | |
1957 | return -EFAULT; | |
1958 | ||
1959 | stats.n_stats = n_stats; | |
1960 | data = kmalloc_array(n_stats, sizeof(u64), GFP_USER); | |
1961 | if (!data) | |
1962 | return -ENOMEM; | |
1963 | ||
1964 | mutex_lock(&phydev->lock); | |
1965 | phydev->drv->get_stats(phydev, &stats, data); | |
1966 | mutex_unlock(&phydev->lock); | |
1967 | ||
1968 | ret = -EFAULT; | |
1969 | if (copy_to_user(useraddr, &stats, sizeof(stats))) | |
1970 | goto out; | |
1971 | useraddr += sizeof(stats); | |
1972 | if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64))) | |
1973 | goto out; | |
1974 | ret = 0; | |
1975 | ||
1976 | out: | |
1977 | kfree(data); | |
1978 | return ret; | |
1979 | } | |
1980 | ||
0bf0519d | 1981 | static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) |
a6f9a705 JW |
1982 | { |
1983 | struct ethtool_perm_addr epaddr; | |
a6f9a705 | 1984 | |
313674af | 1985 | if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) |
a6f9a705 JW |
1986 | return -EFAULT; |
1987 | ||
313674af MW |
1988 | if (epaddr.size < dev->addr_len) |
1989 | return -ETOOSMALL; | |
1990 | epaddr.size = dev->addr_len; | |
a6f9a705 | 1991 | |
a6f9a705 | 1992 | if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) |
313674af | 1993 | return -EFAULT; |
a6f9a705 | 1994 | useraddr += sizeof(epaddr); |
313674af MW |
1995 | if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) |
1996 | return -EFAULT; | |
1997 | return 0; | |
a6f9a705 JW |
1998 | } |
1999 | ||
13c99b24 JG |
2000 | static int ethtool_get_value(struct net_device *dev, char __user *useraddr, |
2001 | u32 cmd, u32 (*actor)(struct net_device *)) | |
3ae7c0b2 | 2002 | { |
8e557421 | 2003 | struct ethtool_value edata = { .cmd = cmd }; |
3ae7c0b2 | 2004 | |
13c99b24 | 2005 | if (!actor) |
3ae7c0b2 JG |
2006 | return -EOPNOTSUPP; |
2007 | ||
13c99b24 | 2008 | edata.data = actor(dev); |
3ae7c0b2 JG |
2009 | |
2010 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
2011 | return -EFAULT; | |
2012 | return 0; | |
2013 | } | |
2014 | ||
13c99b24 JG |
2015 | static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, |
2016 | void (*actor)(struct net_device *, u32)) | |
3ae7c0b2 JG |
2017 | { |
2018 | struct ethtool_value edata; | |
2019 | ||
13c99b24 | 2020 | if (!actor) |
3ae7c0b2 JG |
2021 | return -EOPNOTSUPP; |
2022 | ||
2023 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
2024 | return -EFAULT; | |
2025 | ||
13c99b24 | 2026 | actor(dev, edata.data); |
339bf024 JG |
2027 | return 0; |
2028 | } | |
2029 | ||
13c99b24 JG |
2030 | static int ethtool_set_value(struct net_device *dev, char __user *useraddr, |
2031 | int (*actor)(struct net_device *, u32)) | |
339bf024 JG |
2032 | { |
2033 | struct ethtool_value edata; | |
2034 | ||
13c99b24 | 2035 | if (!actor) |
339bf024 JG |
2036 | return -EOPNOTSUPP; |
2037 | ||
2038 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
2039 | return -EFAULT; | |
2040 | ||
13c99b24 | 2041 | return actor(dev, edata.data); |
339bf024 JG |
2042 | } |
2043 | ||
97f8aefb | 2044 | static noinline_for_stack int ethtool_flash_device(struct net_device *dev, |
2045 | char __user *useraddr) | |
05c6a8d7 AK |
2046 | { |
2047 | struct ethtool_flash efl; | |
2048 | ||
2049 | if (copy_from_user(&efl, useraddr, sizeof(efl))) | |
2050 | return -EFAULT; | |
2051 | ||
2052 | if (!dev->ethtool_ops->flash_device) | |
2053 | return -EOPNOTSUPP; | |
2054 | ||
786f5281 BH |
2055 | efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; |
2056 | ||
05c6a8d7 AK |
2057 | return dev->ethtool_ops->flash_device(dev, &efl); |
2058 | } | |
2059 | ||
29dd54b7 AC |
2060 | static int ethtool_set_dump(struct net_device *dev, |
2061 | void __user *useraddr) | |
2062 | { | |
2063 | struct ethtool_dump dump; | |
2064 | ||
2065 | if (!dev->ethtool_ops->set_dump) | |
2066 | return -EOPNOTSUPP; | |
2067 | ||
2068 | if (copy_from_user(&dump, useraddr, sizeof(dump))) | |
2069 | return -EFAULT; | |
2070 | ||
2071 | return dev->ethtool_ops->set_dump(dev, &dump); | |
2072 | } | |
2073 | ||
2074 | static int ethtool_get_dump_flag(struct net_device *dev, | |
2075 | void __user *useraddr) | |
2076 | { | |
2077 | int ret; | |
2078 | struct ethtool_dump dump; | |
2079 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2080 | ||
c03a14e8 | 2081 | if (!ops->get_dump_flag) |
29dd54b7 AC |
2082 | return -EOPNOTSUPP; |
2083 | ||
2084 | if (copy_from_user(&dump, useraddr, sizeof(dump))) | |
2085 | return -EFAULT; | |
2086 | ||
2087 | ret = ops->get_dump_flag(dev, &dump); | |
2088 | if (ret) | |
2089 | return ret; | |
2090 | ||
2091 | if (copy_to_user(useraddr, &dump, sizeof(dump))) | |
2092 | return -EFAULT; | |
2093 | return 0; | |
2094 | } | |
2095 | ||
2096 | static int ethtool_get_dump_data(struct net_device *dev, | |
2097 | void __user *useraddr) | |
2098 | { | |
2099 | int ret; | |
2100 | __u32 len; | |
2101 | struct ethtool_dump dump, tmp; | |
2102 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2103 | void *data = NULL; | |
2104 | ||
c03a14e8 | 2105 | if (!ops->get_dump_data || !ops->get_dump_flag) |
29dd54b7 AC |
2106 | return -EOPNOTSUPP; |
2107 | ||
2108 | if (copy_from_user(&dump, useraddr, sizeof(dump))) | |
2109 | return -EFAULT; | |
2110 | ||
2111 | memset(&tmp, 0, sizeof(tmp)); | |
2112 | tmp.cmd = ETHTOOL_GET_DUMP_FLAG; | |
2113 | ret = ops->get_dump_flag(dev, &tmp); | |
2114 | if (ret) | |
2115 | return ret; | |
2116 | ||
c590b5e2 | 2117 | len = min(tmp.len, dump.len); |
29dd54b7 AC |
2118 | if (!len) |
2119 | return -EFAULT; | |
2120 | ||
c590b5e2 MS |
2121 | /* Don't ever let the driver think there's more space available |
2122 | * than it requested with .get_dump_flag(). | |
2123 | */ | |
2124 | dump.len = len; | |
2125 | ||
2126 | /* Always allocate enough space to hold the whole thing so that the | |
2127 | * driver does not need to check the length and bother with partial | |
2128 | * dumping. | |
2129 | */ | |
29dd54b7 AC |
2130 | data = vzalloc(tmp.len); |
2131 | if (!data) | |
2132 | return -ENOMEM; | |
2133 | ret = ops->get_dump_data(dev, &dump, data); | |
2134 | if (ret) | |
2135 | goto out; | |
2136 | ||
c590b5e2 MS |
2137 | /* There are two sane possibilities: |
2138 | * 1. The driver's .get_dump_data() does not touch dump.len. | |
2139 | * 2. Or it may set dump.len to how much it really writes, which | |
2140 | * should be tmp.len (or len if it can do a partial dump). | |
2141 | * In any case respond to userspace with the actual length of data | |
2142 | * it's receiving. | |
2143 | */ | |
2144 | WARN_ON(dump.len != len && dump.len != tmp.len); | |
2145 | dump.len = len; | |
2146 | ||
29dd54b7 AC |
2147 | if (copy_to_user(useraddr, &dump, sizeof(dump))) { |
2148 | ret = -EFAULT; | |
2149 | goto out; | |
2150 | } | |
2151 | useraddr += offsetof(struct ethtool_dump, data); | |
2152 | if (copy_to_user(useraddr, data, len)) | |
2153 | ret = -EFAULT; | |
2154 | out: | |
2155 | vfree(data); | |
2156 | return ret; | |
2157 | } | |
2158 | ||
c8f3a8c3 RC |
2159 | static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) |
2160 | { | |
2161 | int err = 0; | |
2162 | struct ethtool_ts_info info; | |
2163 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2164 | struct phy_device *phydev = dev->phydev; | |
2165 | ||
2166 | memset(&info, 0, sizeof(info)); | |
2167 | info.cmd = ETHTOOL_GET_TS_INFO; | |
2168 | ||
2169 | if (phydev && phydev->drv && phydev->drv->ts_info) { | |
c8f3a8c3 | 2170 | err = phydev->drv->ts_info(phydev, &info); |
c03a14e8 | 2171 | } else if (ops->get_ts_info) { |
c8f3a8c3 | 2172 | err = ops->get_ts_info(dev, &info); |
c8f3a8c3 RC |
2173 | } else { |
2174 | info.so_timestamping = | |
2175 | SOF_TIMESTAMPING_RX_SOFTWARE | | |
2176 | SOF_TIMESTAMPING_SOFTWARE; | |
2177 | info.phc_index = -1; | |
2178 | } | |
2179 | ||
2180 | if (err) | |
2181 | return err; | |
2182 | ||
2183 | if (copy_to_user(useraddr, &info, sizeof(info))) | |
2184 | err = -EFAULT; | |
2185 | ||
2186 | return err; | |
2187 | } | |
2188 | ||
2f438366 ES |
2189 | static int __ethtool_get_module_info(struct net_device *dev, |
2190 | struct ethtool_modinfo *modinfo) | |
2191 | { | |
2192 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2193 | struct phy_device *phydev = dev->phydev; | |
2194 | ||
2195 | if (phydev && phydev->drv && phydev->drv->module_info) | |
2196 | return phydev->drv->module_info(phydev, modinfo); | |
2197 | ||
2198 | if (ops->get_module_info) | |
2199 | return ops->get_module_info(dev, modinfo); | |
2200 | ||
2201 | return -EOPNOTSUPP; | |
2202 | } | |
2203 | ||
41c3cb6d SH |
2204 | static int ethtool_get_module_info(struct net_device *dev, |
2205 | void __user *useraddr) | |
2206 | { | |
2207 | int ret; | |
2208 | struct ethtool_modinfo modinfo; | |
41c3cb6d SH |
2209 | |
2210 | if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) | |
2211 | return -EFAULT; | |
2212 | ||
2f438366 | 2213 | ret = __ethtool_get_module_info(dev, &modinfo); |
41c3cb6d SH |
2214 | if (ret) |
2215 | return ret; | |
2216 | ||
2217 | if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) | |
2218 | return -EFAULT; | |
2219 | ||
2220 | return 0; | |
2221 | } | |
2222 | ||
2f438366 ES |
2223 | static int __ethtool_get_module_eeprom(struct net_device *dev, |
2224 | struct ethtool_eeprom *ee, u8 *data) | |
2225 | { | |
2226 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2227 | struct phy_device *phydev = dev->phydev; | |
2228 | ||
2229 | if (phydev && phydev->drv && phydev->drv->module_eeprom) | |
2230 | return phydev->drv->module_eeprom(phydev, ee, data); | |
2231 | ||
2232 | if (ops->get_module_eeprom) | |
2233 | return ops->get_module_eeprom(dev, ee, data); | |
2234 | ||
2235 | return -EOPNOTSUPP; | |
2236 | } | |
2237 | ||
41c3cb6d SH |
2238 | static int ethtool_get_module_eeprom(struct net_device *dev, |
2239 | void __user *useraddr) | |
2240 | { | |
2241 | int ret; | |
2242 | struct ethtool_modinfo modinfo; | |
41c3cb6d | 2243 | |
2f438366 | 2244 | ret = __ethtool_get_module_info(dev, &modinfo); |
41c3cb6d SH |
2245 | if (ret) |
2246 | return ret; | |
2247 | ||
2f438366 ES |
2248 | return ethtool_get_any_eeprom(dev, useraddr, |
2249 | __ethtool_get_module_eeprom, | |
41c3cb6d SH |
2250 | modinfo.eeprom_len); |
2251 | } | |
2252 | ||
f0db9b07 GV |
2253 | static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) |
2254 | { | |
2255 | switch (tuna->id) { | |
2256 | case ETHTOOL_RX_COPYBREAK: | |
1255a505 | 2257 | case ETHTOOL_TX_COPYBREAK: |
f0db9b07 GV |
2258 | if (tuna->len != sizeof(u32) || |
2259 | tuna->type_id != ETHTOOL_TUNABLE_U32) | |
2260 | return -EINVAL; | |
2261 | break; | |
2262 | default: | |
2263 | return -EINVAL; | |
2264 | } | |
2265 | ||
2266 | return 0; | |
2267 | } | |
2268 | ||
2269 | static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) | |
2270 | { | |
2271 | int ret; | |
2272 | struct ethtool_tunable tuna; | |
2273 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2274 | void *data; | |
2275 | ||
2276 | if (!ops->get_tunable) | |
2277 | return -EOPNOTSUPP; | |
2278 | if (copy_from_user(&tuna, useraddr, sizeof(tuna))) | |
2279 | return -EFAULT; | |
2280 | ret = ethtool_tunable_valid(&tuna); | |
2281 | if (ret) | |
2282 | return ret; | |
2283 | data = kmalloc(tuna.len, GFP_USER); | |
2284 | if (!data) | |
2285 | return -ENOMEM; | |
2286 | ret = ops->get_tunable(dev, &tuna, data); | |
2287 | if (ret) | |
2288 | goto out; | |
2289 | useraddr += sizeof(tuna); | |
2290 | ret = -EFAULT; | |
2291 | if (copy_to_user(useraddr, data, tuna.len)) | |
2292 | goto out; | |
2293 | ret = 0; | |
2294 | ||
2295 | out: | |
2296 | kfree(data); | |
2297 | return ret; | |
2298 | } | |
2299 | ||
2300 | static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) | |
2301 | { | |
2302 | int ret; | |
2303 | struct ethtool_tunable tuna; | |
2304 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2305 | void *data; | |
2306 | ||
2307 | if (!ops->set_tunable) | |
2308 | return -EOPNOTSUPP; | |
2309 | if (copy_from_user(&tuna, useraddr, sizeof(tuna))) | |
2310 | return -EFAULT; | |
2311 | ret = ethtool_tunable_valid(&tuna); | |
2312 | if (ret) | |
2313 | return ret; | |
2314 | data = kmalloc(tuna.len, GFP_USER); | |
2315 | if (!data) | |
2316 | return -ENOMEM; | |
2317 | useraddr += sizeof(tuna); | |
2318 | ret = -EFAULT; | |
2319 | if (copy_from_user(data, useraddr, tuna.len)) | |
2320 | goto out; | |
2321 | ret = ops->set_tunable(dev, &tuna, data); | |
2322 | ||
2323 | out: | |
2324 | kfree(data); | |
2325 | return ret; | |
2326 | } | |
2327 | ||
421797b1 KL |
2328 | static int ethtool_get_per_queue_coalesce(struct net_device *dev, |
2329 | void __user *useraddr, | |
2330 | struct ethtool_per_queue_op *per_queue_opt) | |
2331 | { | |
2332 | u32 bit; | |
2333 | int ret; | |
2334 | DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); | |
2335 | ||
2336 | if (!dev->ethtool_ops->get_per_queue_coalesce) | |
2337 | return -EOPNOTSUPP; | |
2338 | ||
2339 | useraddr += sizeof(*per_queue_opt); | |
2340 | ||
2341 | bitmap_from_u32array(queue_mask, | |
2342 | MAX_NUM_QUEUE, | |
2343 | per_queue_opt->queue_mask, | |
2344 | DIV_ROUND_UP(MAX_NUM_QUEUE, 32)); | |
2345 | ||
2346 | for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { | |
2347 | struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; | |
2348 | ||
2349 | ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); | |
2350 | if (ret != 0) | |
2351 | return ret; | |
2352 | if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) | |
2353 | return -EFAULT; | |
2354 | useraddr += sizeof(coalesce); | |
2355 | } | |
2356 | ||
2357 | return 0; | |
2358 | } | |
2359 | ||
f38d138a KL |
2360 | static int ethtool_set_per_queue_coalesce(struct net_device *dev, |
2361 | void __user *useraddr, | |
2362 | struct ethtool_per_queue_op *per_queue_opt) | |
2363 | { | |
2364 | u32 bit; | |
2365 | int i, ret = 0; | |
2366 | int n_queue; | |
2367 | struct ethtool_coalesce *backup = NULL, *tmp = NULL; | |
2368 | DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); | |
2369 | ||
2370 | if ((!dev->ethtool_ops->set_per_queue_coalesce) || | |
2371 | (!dev->ethtool_ops->get_per_queue_coalesce)) | |
2372 | return -EOPNOTSUPP; | |
2373 | ||
2374 | useraddr += sizeof(*per_queue_opt); | |
2375 | ||
2376 | bitmap_from_u32array(queue_mask, | |
2377 | MAX_NUM_QUEUE, | |
2378 | per_queue_opt->queue_mask, | |
2379 | DIV_ROUND_UP(MAX_NUM_QUEUE, 32)); | |
2380 | n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); | |
2381 | tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); | |
2382 | if (!backup) | |
2383 | return -ENOMEM; | |
2384 | ||
2385 | for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { | |
2386 | struct ethtool_coalesce coalesce; | |
2387 | ||
2388 | ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); | |
2389 | if (ret != 0) | |
2390 | goto roll_back; | |
2391 | ||
2392 | tmp++; | |
2393 | ||
2394 | if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { | |
2395 | ret = -EFAULT; | |
2396 | goto roll_back; | |
2397 | } | |
2398 | ||
2399 | ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); | |
2400 | if (ret != 0) | |
2401 | goto roll_back; | |
2402 | ||
2403 | useraddr += sizeof(coalesce); | |
2404 | } | |
2405 | ||
2406 | roll_back: | |
2407 | if (ret != 0) { | |
2408 | tmp = backup; | |
2409 | for_each_set_bit(i, queue_mask, bit) { | |
2410 | dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); | |
2411 | tmp++; | |
2412 | } | |
2413 | } | |
2414 | kfree(backup); | |
2415 | ||
2416 | return ret; | |
2417 | } | |
2418 | ||
ac2c7ad0 KL |
2419 | static int ethtool_set_per_queue(struct net_device *dev, void __user *useraddr) |
2420 | { | |
2421 | struct ethtool_per_queue_op per_queue_opt; | |
2422 | ||
2423 | if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) | |
2424 | return -EFAULT; | |
2425 | ||
2426 | switch (per_queue_opt.sub_command) { | |
421797b1 KL |
2427 | case ETHTOOL_GCOALESCE: |
2428 | return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); | |
f38d138a KL |
2429 | case ETHTOOL_SCOALESCE: |
2430 | return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); | |
ac2c7ad0 KL |
2431 | default: |
2432 | return -EOPNOTSUPP; | |
2433 | }; | |
2434 | } | |
2435 | ||
968ad9da RL |
2436 | static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) |
2437 | { | |
2438 | switch (tuna->id) { | |
65feddd5 RL |
2439 | case ETHTOOL_PHY_DOWNSHIFT: |
2440 | if (tuna->len != sizeof(u8) || | |
2441 | tuna->type_id != ETHTOOL_TUNABLE_U8) | |
2442 | return -EINVAL; | |
2443 | break; | |
968ad9da RL |
2444 | default: |
2445 | return -EINVAL; | |
2446 | } | |
2447 | ||
2448 | return 0; | |
2449 | } | |
2450 | ||
2451 | static int get_phy_tunable(struct net_device *dev, void __user *useraddr) | |
2452 | { | |
2453 | int ret; | |
2454 | struct ethtool_tunable tuna; | |
2455 | struct phy_device *phydev = dev->phydev; | |
2456 | void *data; | |
2457 | ||
2458 | if (!(phydev && phydev->drv && phydev->drv->get_tunable)) | |
2459 | return -EOPNOTSUPP; | |
2460 | ||
2461 | if (copy_from_user(&tuna, useraddr, sizeof(tuna))) | |
2462 | return -EFAULT; | |
2463 | ret = ethtool_phy_tunable_valid(&tuna); | |
2464 | if (ret) | |
2465 | return ret; | |
2466 | data = kmalloc(tuna.len, GFP_USER); | |
2467 | if (!data) | |
2468 | return -ENOMEM; | |
2469 | ret = phydev->drv->get_tunable(phydev, &tuna, data); | |
2470 | if (ret) | |
2471 | goto out; | |
2472 | useraddr += sizeof(tuna); | |
2473 | ret = -EFAULT; | |
2474 | if (copy_to_user(useraddr, data, tuna.len)) | |
2475 | goto out; | |
2476 | ret = 0; | |
2477 | ||
2478 | out: | |
2479 | kfree(data); | |
2480 | return ret; | |
2481 | } | |
2482 | ||
2483 | static int set_phy_tunable(struct net_device *dev, void __user *useraddr) | |
2484 | { | |
2485 | int ret; | |
2486 | struct ethtool_tunable tuna; | |
2487 | struct phy_device *phydev = dev->phydev; | |
2488 | void *data; | |
2489 | ||
2490 | if (!(phydev && phydev->drv && phydev->drv->set_tunable)) | |
2491 | return -EOPNOTSUPP; | |
2492 | if (copy_from_user(&tuna, useraddr, sizeof(tuna))) | |
2493 | return -EFAULT; | |
2494 | ret = ethtool_phy_tunable_valid(&tuna); | |
2495 | if (ret) | |
2496 | return ret; | |
2497 | data = kmalloc(tuna.len, GFP_USER); | |
2498 | if (!data) | |
2499 | return -ENOMEM; | |
2500 | useraddr += sizeof(tuna); | |
2501 | ret = -EFAULT; | |
2502 | if (copy_from_user(data, useraddr, tuna.len)) | |
2503 | goto out; | |
2504 | ret = phydev->drv->set_tunable(phydev, &tuna, data); | |
2505 | ||
2506 | out: | |
2507 | kfree(data); | |
2508 | return ret; | |
2509 | } | |
2510 | ||
600fed5e | 2511 | /* The main entry point in this file. Called from net/core/dev_ioctl.c */ |
1da177e4 | 2512 | |
881d966b | 2513 | int dev_ethtool(struct net *net, struct ifreq *ifr) |
1da177e4 | 2514 | { |
881d966b | 2515 | struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name); |
1da177e4 | 2516 | void __user *useraddr = ifr->ifr_data; |
ac2c7ad0 | 2517 | u32 ethcmd, sub_cmd; |
1da177e4 | 2518 | int rc; |
b29d3145 | 2519 | netdev_features_t old_features; |
1da177e4 | 2520 | |
1da177e4 LT |
2521 | if (!dev || !netif_device_present(dev)) |
2522 | return -ENODEV; | |
2523 | ||
97f8aefb | 2524 | if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) |
1da177e4 LT |
2525 | return -EFAULT; |
2526 | ||
ac2c7ad0 KL |
2527 | if (ethcmd == ETHTOOL_PERQUEUE) { |
2528 | if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) | |
2529 | return -EFAULT; | |
2530 | } else { | |
2531 | sub_cmd = ethcmd; | |
2532 | } | |
75f3123c | 2533 | /* Allow some commands to be done by anyone */ |
ac2c7ad0 | 2534 | switch (sub_cmd) { |
0fdc100b | 2535 | case ETHTOOL_GSET: |
75f3123c | 2536 | case ETHTOOL_GDRVINFO: |
75f3123c | 2537 | case ETHTOOL_GMSGLVL: |
2da45db2 | 2538 | case ETHTOOL_GLINK: |
75f3123c SH |
2539 | case ETHTOOL_GCOALESCE: |
2540 | case ETHTOOL_GRINGPARAM: | |
2541 | case ETHTOOL_GPAUSEPARAM: | |
2542 | case ETHTOOL_GRXCSUM: | |
2543 | case ETHTOOL_GTXCSUM: | |
2544 | case ETHTOOL_GSG: | |
f80400a2 | 2545 | case ETHTOOL_GSSET_INFO: |
75f3123c | 2546 | case ETHTOOL_GSTRINGS: |
2da45db2 | 2547 | case ETHTOOL_GSTATS: |
f3a40945 | 2548 | case ETHTOOL_GPHYSTATS: |
75f3123c SH |
2549 | case ETHTOOL_GTSO: |
2550 | case ETHTOOL_GPERMADDR: | |
2551 | case ETHTOOL_GUFO: | |
2552 | case ETHTOOL_GGSO: | |
1cab819b | 2553 | case ETHTOOL_GGRO: |
339bf024 JG |
2554 | case ETHTOOL_GFLAGS: |
2555 | case ETHTOOL_GPFLAGS: | |
0853ad66 | 2556 | case ETHTOOL_GRXFH: |
59089d8d SB |
2557 | case ETHTOOL_GRXRINGS: |
2558 | case ETHTOOL_GRXCLSRLCNT: | |
2559 | case ETHTOOL_GRXCLSRULE: | |
2560 | case ETHTOOL_GRXCLSRLALL: | |
2da45db2 | 2561 | case ETHTOOL_GRXFHINDIR: |
3de0b592 | 2562 | case ETHTOOL_GRSSH: |
5455c699 | 2563 | case ETHTOOL_GFEATURES: |
2da45db2 | 2564 | case ETHTOOL_GCHANNELS: |
c8f3a8c3 | 2565 | case ETHTOOL_GET_TS_INFO: |
2da45db2 | 2566 | case ETHTOOL_GEEE: |
f0db9b07 | 2567 | case ETHTOOL_GTUNABLE: |
968ad9da | 2568 | case ETHTOOL_PHY_GTUNABLE: |
75f3123c SH |
2569 | break; |
2570 | default: | |
5e1fccc0 | 2571 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
75f3123c SH |
2572 | return -EPERM; |
2573 | } | |
2574 | ||
97f8aefb | 2575 | if (dev->ethtool_ops->begin) { |
2576 | rc = dev->ethtool_ops->begin(dev); | |
2577 | if (rc < 0) | |
1da177e4 | 2578 | return rc; |
97f8aefb | 2579 | } |
d8a33ac4 SH |
2580 | old_features = dev->features; |
2581 | ||
1da177e4 LT |
2582 | switch (ethcmd) { |
2583 | case ETHTOOL_GSET: | |
2584 | rc = ethtool_get_settings(dev, useraddr); | |
2585 | break; | |
2586 | case ETHTOOL_SSET: | |
2587 | rc = ethtool_set_settings(dev, useraddr); | |
2588 | break; | |
2589 | case ETHTOOL_GDRVINFO: | |
2590 | rc = ethtool_get_drvinfo(dev, useraddr); | |
1da177e4 LT |
2591 | break; |
2592 | case ETHTOOL_GREGS: | |
2593 | rc = ethtool_get_regs(dev, useraddr); | |
2594 | break; | |
2595 | case ETHTOOL_GWOL: | |
2596 | rc = ethtool_get_wol(dev, useraddr); | |
2597 | break; | |
2598 | case ETHTOOL_SWOL: | |
2599 | rc = ethtool_set_wol(dev, useraddr); | |
2600 | break; | |
2601 | case ETHTOOL_GMSGLVL: | |
13c99b24 JG |
2602 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
2603 | dev->ethtool_ops->get_msglevel); | |
1da177e4 LT |
2604 | break; |
2605 | case ETHTOOL_SMSGLVL: | |
13c99b24 JG |
2606 | rc = ethtool_set_value_void(dev, useraddr, |
2607 | dev->ethtool_ops->set_msglevel); | |
1da177e4 | 2608 | break; |
80f12ecc YM |
2609 | case ETHTOOL_GEEE: |
2610 | rc = ethtool_get_eee(dev, useraddr); | |
2611 | break; | |
2612 | case ETHTOOL_SEEE: | |
2613 | rc = ethtool_set_eee(dev, useraddr); | |
2614 | break; | |
1da177e4 LT |
2615 | case ETHTOOL_NWAY_RST: |
2616 | rc = ethtool_nway_reset(dev); | |
2617 | break; | |
2618 | case ETHTOOL_GLINK: | |
e596e6e4 | 2619 | rc = ethtool_get_link(dev, useraddr); |
1da177e4 LT |
2620 | break; |
2621 | case ETHTOOL_GEEPROM: | |
2622 | rc = ethtool_get_eeprom(dev, useraddr); | |
2623 | break; | |
2624 | case ETHTOOL_SEEPROM: | |
2625 | rc = ethtool_set_eeprom(dev, useraddr); | |
2626 | break; | |
2627 | case ETHTOOL_GCOALESCE: | |
2628 | rc = ethtool_get_coalesce(dev, useraddr); | |
2629 | break; | |
2630 | case ETHTOOL_SCOALESCE: | |
2631 | rc = ethtool_set_coalesce(dev, useraddr); | |
2632 | break; | |
2633 | case ETHTOOL_GRINGPARAM: | |
2634 | rc = ethtool_get_ringparam(dev, useraddr); | |
2635 | break; | |
2636 | case ETHTOOL_SRINGPARAM: | |
2637 | rc = ethtool_set_ringparam(dev, useraddr); | |
2638 | break; | |
2639 | case ETHTOOL_GPAUSEPARAM: | |
2640 | rc = ethtool_get_pauseparam(dev, useraddr); | |
2641 | break; | |
2642 | case ETHTOOL_SPAUSEPARAM: | |
2643 | rc = ethtool_set_pauseparam(dev, useraddr); | |
2644 | break; | |
1da177e4 LT |
2645 | case ETHTOOL_TEST: |
2646 | rc = ethtool_self_test(dev, useraddr); | |
2647 | break; | |
2648 | case ETHTOOL_GSTRINGS: | |
2649 | rc = ethtool_get_strings(dev, useraddr); | |
2650 | break; | |
2651 | case ETHTOOL_PHYS_ID: | |
2652 | rc = ethtool_phys_id(dev, useraddr); | |
2653 | break; | |
2654 | case ETHTOOL_GSTATS: | |
2655 | rc = ethtool_get_stats(dev, useraddr); | |
2656 | break; | |
a6f9a705 JW |
2657 | case ETHTOOL_GPERMADDR: |
2658 | rc = ethtool_get_perm_addr(dev, useraddr); | |
2659 | break; | |
3ae7c0b2 | 2660 | case ETHTOOL_GFLAGS: |
13c99b24 | 2661 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
bc5787c6 | 2662 | __ethtool_get_flags); |
3ae7c0b2 JG |
2663 | break; |
2664 | case ETHTOOL_SFLAGS: | |
da8ac86c | 2665 | rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); |
3ae7c0b2 | 2666 | break; |
339bf024 | 2667 | case ETHTOOL_GPFLAGS: |
13c99b24 JG |
2668 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
2669 | dev->ethtool_ops->get_priv_flags); | |
339bf024 JG |
2670 | break; |
2671 | case ETHTOOL_SPFLAGS: | |
13c99b24 JG |
2672 | rc = ethtool_set_value(dev, useraddr, |
2673 | dev->ethtool_ops->set_priv_flags); | |
339bf024 | 2674 | break; |
0853ad66 | 2675 | case ETHTOOL_GRXFH: |
59089d8d SB |
2676 | case ETHTOOL_GRXRINGS: |
2677 | case ETHTOOL_GRXCLSRLCNT: | |
2678 | case ETHTOOL_GRXCLSRULE: | |
2679 | case ETHTOOL_GRXCLSRLALL: | |
bf988435 | 2680 | rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); |
0853ad66 SB |
2681 | break; |
2682 | case ETHTOOL_SRXFH: | |
59089d8d SB |
2683 | case ETHTOOL_SRXCLSRLDEL: |
2684 | case ETHTOOL_SRXCLSRLINS: | |
bf988435 | 2685 | rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); |
0853ad66 | 2686 | break; |
05c6a8d7 AK |
2687 | case ETHTOOL_FLASHDEV: |
2688 | rc = ethtool_flash_device(dev, useraddr); | |
2689 | break; | |
d73d3a8c BH |
2690 | case ETHTOOL_RESET: |
2691 | rc = ethtool_reset(dev, useraddr); | |
2692 | break; | |
723b2f57 JG |
2693 | case ETHTOOL_GSSET_INFO: |
2694 | rc = ethtool_get_sset_info(dev, useraddr); | |
2695 | break; | |
a5b6ee29 BH |
2696 | case ETHTOOL_GRXFHINDIR: |
2697 | rc = ethtool_get_rxfh_indir(dev, useraddr); | |
2698 | break; | |
2699 | case ETHTOOL_SRXFHINDIR: | |
2700 | rc = ethtool_set_rxfh_indir(dev, useraddr); | |
2701 | break; | |
3de0b592 VD |
2702 | case ETHTOOL_GRSSH: |
2703 | rc = ethtool_get_rxfh(dev, useraddr); | |
2704 | break; | |
2705 | case ETHTOOL_SRSSH: | |
2706 | rc = ethtool_set_rxfh(dev, useraddr); | |
2707 | break; | |
5455c699 MM |
2708 | case ETHTOOL_GFEATURES: |
2709 | rc = ethtool_get_features(dev, useraddr); | |
2710 | break; | |
2711 | case ETHTOOL_SFEATURES: | |
2712 | rc = ethtool_set_features(dev, useraddr); | |
2713 | break; | |
0a417704 | 2714 | case ETHTOOL_GTXCSUM: |
e83d360d | 2715 | case ETHTOOL_GRXCSUM: |
0a417704 MM |
2716 | case ETHTOOL_GSG: |
2717 | case ETHTOOL_GTSO: | |
2718 | case ETHTOOL_GUFO: | |
2719 | case ETHTOOL_GGSO: | |
2720 | case ETHTOOL_GGRO: | |
2721 | rc = ethtool_get_one_feature(dev, useraddr, ethcmd); | |
2722 | break; | |
2723 | case ETHTOOL_STXCSUM: | |
e83d360d | 2724 | case ETHTOOL_SRXCSUM: |
0a417704 MM |
2725 | case ETHTOOL_SSG: |
2726 | case ETHTOOL_STSO: | |
2727 | case ETHTOOL_SUFO: | |
2728 | case ETHTOOL_SGSO: | |
2729 | case ETHTOOL_SGRO: | |
2730 | rc = ethtool_set_one_feature(dev, useraddr, ethcmd); | |
2731 | break; | |
8b5933c3 | 2732 | case ETHTOOL_GCHANNELS: |
2733 | rc = ethtool_get_channels(dev, useraddr); | |
2734 | break; | |
2735 | case ETHTOOL_SCHANNELS: | |
2736 | rc = ethtool_set_channels(dev, useraddr); | |
2737 | break; | |
29dd54b7 AC |
2738 | case ETHTOOL_SET_DUMP: |
2739 | rc = ethtool_set_dump(dev, useraddr); | |
2740 | break; | |
2741 | case ETHTOOL_GET_DUMP_FLAG: | |
2742 | rc = ethtool_get_dump_flag(dev, useraddr); | |
2743 | break; | |
2744 | case ETHTOOL_GET_DUMP_DATA: | |
2745 | rc = ethtool_get_dump_data(dev, useraddr); | |
2746 | break; | |
c8f3a8c3 RC |
2747 | case ETHTOOL_GET_TS_INFO: |
2748 | rc = ethtool_get_ts_info(dev, useraddr); | |
2749 | break; | |
41c3cb6d SH |
2750 | case ETHTOOL_GMODULEINFO: |
2751 | rc = ethtool_get_module_info(dev, useraddr); | |
2752 | break; | |
2753 | case ETHTOOL_GMODULEEEPROM: | |
2754 | rc = ethtool_get_module_eeprom(dev, useraddr); | |
2755 | break; | |
f0db9b07 GV |
2756 | case ETHTOOL_GTUNABLE: |
2757 | rc = ethtool_get_tunable(dev, useraddr); | |
2758 | break; | |
2759 | case ETHTOOL_STUNABLE: | |
2760 | rc = ethtool_set_tunable(dev, useraddr); | |
2761 | break; | |
f3a40945 AL |
2762 | case ETHTOOL_GPHYSTATS: |
2763 | rc = ethtool_get_phy_stats(dev, useraddr); | |
2764 | break; | |
ac2c7ad0 KL |
2765 | case ETHTOOL_PERQUEUE: |
2766 | rc = ethtool_set_per_queue(dev, useraddr); | |
2767 | break; | |
3f1ac7a7 DD |
2768 | case ETHTOOL_GLINKSETTINGS: |
2769 | rc = ethtool_get_link_ksettings(dev, useraddr); | |
2770 | break; | |
2771 | case ETHTOOL_SLINKSETTINGS: | |
2772 | rc = ethtool_set_link_ksettings(dev, useraddr); | |
2773 | break; | |
968ad9da RL |
2774 | case ETHTOOL_PHY_GTUNABLE: |
2775 | rc = get_phy_tunable(dev, useraddr); | |
2776 | break; | |
2777 | case ETHTOOL_PHY_STUNABLE: | |
2778 | rc = set_phy_tunable(dev, useraddr); | |
2779 | break; | |
1da177e4 | 2780 | default: |
61a44b9c | 2781 | rc = -EOPNOTSUPP; |
1da177e4 | 2782 | } |
4ec93edb | 2783 | |
e71a4783 | 2784 | if (dev->ethtool_ops->complete) |
1da177e4 | 2785 | dev->ethtool_ops->complete(dev); |
d8a33ac4 SH |
2786 | |
2787 | if (old_features != dev->features) | |
2788 | netdev_features_change(dev); | |
2789 | ||
1da177e4 | 2790 | return rc; |
1da177e4 | 2791 | } |