Commit | Line | Data |
---|---|---|
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", | |
82 | [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation", | |
83 | [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation", | |
68c33163 | 84 | [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation", |
cb32f511 | 85 | [NETIF_F_GSO_IPIP_BIT] = "tx-ipip-segmentation", |
61c1db7f | 86 | [NETIF_F_GSO_SIT_BIT] = "tx-sit-segmentation", |
73136267 | 87 | [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation", |
9d921549 MM |
88 | |
89 | [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc", | |
53692b1d | 90 | [NETIF_F_SCTP_CRC_BIT] = "tx-checksum-sctp", |
9d921549 MM |
91 | [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu", |
92 | [NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter", | |
93 | [NETIF_F_RXHASH_BIT] = "rx-hashing", | |
94 | [NETIF_F_RXCSUM_BIT] = "rx-checksum", | |
95 | [NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy", | |
96 | [NETIF_F_LOOPBACK_BIT] = "loopback", | |
36eabda3 | 97 | [NETIF_F_RXFCS_BIT] = "rx-fcs", |
5e0c03c8 | 98 | [NETIF_F_RXALL_BIT] = "rx-all", |
a6cc0cfa | 99 | [NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload", |
d0290214 | 100 | [NETIF_F_BUSY_POLL_BIT] = "busy-poll", |
1c78c64e | 101 | [NETIF_F_HW_TC_BIT] = "hw-tc-offload", |
9d921549 MM |
102 | }; |
103 | ||
892311f6 EP |
104 | static const char |
105 | rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = { | |
106 | [ETH_RSS_HASH_TOP_BIT] = "toeplitz", | |
107 | [ETH_RSS_HASH_XOR_BIT] = "xor", | |
108 | }; | |
109 | ||
a4244b0c HHZ |
110 | static const char |
111 | tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = { | |
112 | [ETHTOOL_ID_UNSPEC] = "Unspec", | |
113 | [ETHTOOL_RX_COPYBREAK] = "rx-copybreak", | |
114 | [ETHTOOL_TX_COPYBREAK] = "tx-copybreak", | |
115 | }; | |
116 | ||
5455c699 MM |
117 | static int ethtool_get_features(struct net_device *dev, void __user *useraddr) |
118 | { | |
119 | struct ethtool_gfeatures cmd = { | |
120 | .cmd = ETHTOOL_GFEATURES, | |
121 | .size = ETHTOOL_DEV_FEATURE_WORDS, | |
122 | }; | |
475414f6 | 123 | struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; |
5455c699 MM |
124 | u32 __user *sizeaddr; |
125 | u32 copy_size; | |
475414f6 MM |
126 | int i; |
127 | ||
128 | /* in case feature bits run out again */ | |
09da71b1 | 129 | BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); |
475414f6 MM |
130 | |
131 | for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { | |
09da71b1 MM |
132 | features[i].available = (u32)(dev->hw_features >> (32 * i)); |
133 | features[i].requested = (u32)(dev->wanted_features >> (32 * i)); | |
134 | features[i].active = (u32)(dev->features >> (32 * i)); | |
135 | features[i].never_changed = | |
136 | (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); | |
475414f6 | 137 | } |
5455c699 MM |
138 | |
139 | sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); | |
140 | if (get_user(copy_size, sizeaddr)) | |
141 | return -EFAULT; | |
142 | ||
143 | if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) | |
144 | copy_size = ETHTOOL_DEV_FEATURE_WORDS; | |
145 | ||
146 | if (copy_to_user(useraddr, &cmd, sizeof(cmd))) | |
147 | return -EFAULT; | |
148 | useraddr += sizeof(cmd); | |
149 | if (copy_to_user(useraddr, features, copy_size * sizeof(*features))) | |
150 | return -EFAULT; | |
151 | ||
152 | return 0; | |
153 | } | |
154 | ||
155 | static int ethtool_set_features(struct net_device *dev, void __user *useraddr) | |
156 | { | |
157 | struct ethtool_sfeatures cmd; | |
158 | struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; | |
475414f6 MM |
159 | netdev_features_t wanted = 0, valid = 0; |
160 | int i, ret = 0; | |
5455c699 MM |
161 | |
162 | if (copy_from_user(&cmd, useraddr, sizeof(cmd))) | |
163 | return -EFAULT; | |
164 | useraddr += sizeof(cmd); | |
165 | ||
166 | if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) | |
167 | return -EINVAL; | |
168 | ||
169 | if (copy_from_user(features, useraddr, sizeof(features))) | |
170 | return -EFAULT; | |
171 | ||
475414f6 | 172 | for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { |
09da71b1 MM |
173 | valid |= (netdev_features_t)features[i].valid << (32 * i); |
174 | wanted |= (netdev_features_t)features[i].requested << (32 * i); | |
475414f6 MM |
175 | } |
176 | ||
177 | if (valid & ~NETIF_F_ETHTOOL_BITS) | |
5455c699 MM |
178 | return -EINVAL; |
179 | ||
475414f6 MM |
180 | if (valid & ~dev->hw_features) { |
181 | valid &= dev->hw_features; | |
5455c699 MM |
182 | ret |= ETHTOOL_F_UNSUPPORTED; |
183 | } | |
184 | ||
475414f6 MM |
185 | dev->wanted_features &= ~valid; |
186 | dev->wanted_features |= wanted & valid; | |
6cb6a27c | 187 | __netdev_update_features(dev); |
5455c699 | 188 | |
475414f6 | 189 | if ((dev->wanted_features ^ dev->features) & valid) |
5455c699 MM |
190 | ret |= ETHTOOL_F_WISH; |
191 | ||
192 | return ret; | |
193 | } | |
194 | ||
f3a40945 AL |
195 | static int phy_get_sset_count(struct phy_device *phydev) |
196 | { | |
197 | int ret; | |
198 | ||
199 | if (phydev->drv->get_sset_count && | |
200 | phydev->drv->get_strings && | |
201 | phydev->drv->get_stats) { | |
202 | mutex_lock(&phydev->lock); | |
203 | ret = phydev->drv->get_sset_count(phydev); | |
204 | mutex_unlock(&phydev->lock); | |
205 | ||
206 | return ret; | |
207 | } | |
208 | ||
209 | return -EOPNOTSUPP; | |
210 | } | |
211 | ||
340ae165 MM |
212 | static int __ethtool_get_sset_count(struct net_device *dev, int sset) |
213 | { | |
214 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
215 | ||
5455c699 MM |
216 | if (sset == ETH_SS_FEATURES) |
217 | return ARRAY_SIZE(netdev_features_strings); | |
218 | ||
892311f6 EP |
219 | if (sset == ETH_SS_RSS_HASH_FUNCS) |
220 | return ARRAY_SIZE(rss_hash_func_strings); | |
221 | ||
a4244b0c HHZ |
222 | if (sset == ETH_SS_TUNABLES) |
223 | return ARRAY_SIZE(tunable_strings); | |
224 | ||
f3a40945 AL |
225 | if (sset == ETH_SS_PHY_STATS) { |
226 | if (dev->phydev) | |
227 | return phy_get_sset_count(dev->phydev); | |
228 | else | |
229 | return -EOPNOTSUPP; | |
230 | } | |
231 | ||
c03a14e8 | 232 | if (ops->get_sset_count && ops->get_strings) |
340ae165 MM |
233 | return ops->get_sset_count(dev, sset); |
234 | else | |
235 | return -EOPNOTSUPP; | |
236 | } | |
237 | ||
238 | static void __ethtool_get_strings(struct net_device *dev, | |
239 | u32 stringset, u8 *data) | |
240 | { | |
241 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
242 | ||
5455c699 MM |
243 | if (stringset == ETH_SS_FEATURES) |
244 | memcpy(data, netdev_features_strings, | |
245 | sizeof(netdev_features_strings)); | |
892311f6 EP |
246 | else if (stringset == ETH_SS_RSS_HASH_FUNCS) |
247 | memcpy(data, rss_hash_func_strings, | |
248 | sizeof(rss_hash_func_strings)); | |
a4244b0c HHZ |
249 | else if (stringset == ETH_SS_TUNABLES) |
250 | memcpy(data, tunable_strings, sizeof(tunable_strings)); | |
f3a40945 AL |
251 | else if (stringset == ETH_SS_PHY_STATS) { |
252 | struct phy_device *phydev = dev->phydev; | |
253 | ||
254 | if (phydev) { | |
255 | mutex_lock(&phydev->lock); | |
256 | phydev->drv->get_strings(phydev, data); | |
257 | mutex_unlock(&phydev->lock); | |
258 | } else { | |
259 | return; | |
260 | } | |
261 | } else | |
5455c699 MM |
262 | /* ops->get_strings is valid because checked earlier */ |
263 | ops->get_strings(dev, stringset, data); | |
340ae165 MM |
264 | } |
265 | ||
c8f44aff | 266 | static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) |
0a417704 MM |
267 | { |
268 | /* feature masks of legacy discrete ethtool ops */ | |
269 | ||
270 | switch (eth_cmd) { | |
271 | case ETHTOOL_GTXCSUM: | |
272 | case ETHTOOL_STXCSUM: | |
a188222b | 273 | return NETIF_F_CSUM_MASK | NETIF_F_SCTP_CRC; |
e83d360d MM |
274 | case ETHTOOL_GRXCSUM: |
275 | case ETHTOOL_SRXCSUM: | |
276 | return NETIF_F_RXCSUM; | |
0a417704 MM |
277 | case ETHTOOL_GSG: |
278 | case ETHTOOL_SSG: | |
279 | return NETIF_F_SG; | |
280 | case ETHTOOL_GTSO: | |
281 | case ETHTOOL_STSO: | |
282 | return NETIF_F_ALL_TSO; | |
283 | case ETHTOOL_GUFO: | |
284 | case ETHTOOL_SUFO: | |
285 | return NETIF_F_UFO; | |
286 | case ETHTOOL_GGSO: | |
287 | case ETHTOOL_SGSO: | |
288 | return NETIF_F_GSO; | |
289 | case ETHTOOL_GGRO: | |
290 | case ETHTOOL_SGRO: | |
291 | return NETIF_F_GRO; | |
292 | default: | |
293 | BUG(); | |
294 | } | |
295 | } | |
296 | ||
0a417704 MM |
297 | static int ethtool_get_one_feature(struct net_device *dev, |
298 | char __user *useraddr, u32 ethcmd) | |
299 | { | |
c8f44aff | 300 | netdev_features_t mask = ethtool_get_feature_mask(ethcmd); |
0a417704 MM |
301 | struct ethtool_value edata = { |
302 | .cmd = ethcmd, | |
86794881 | 303 | .data = !!(dev->features & mask), |
0a417704 | 304 | }; |
0a417704 | 305 | |
0a417704 MM |
306 | if (copy_to_user(useraddr, &edata, sizeof(edata))) |
307 | return -EFAULT; | |
308 | return 0; | |
309 | } | |
310 | ||
0a417704 MM |
311 | static int ethtool_set_one_feature(struct net_device *dev, |
312 | void __user *useraddr, u32 ethcmd) | |
313 | { | |
314 | struct ethtool_value edata; | |
c8f44aff | 315 | netdev_features_t mask; |
0a417704 MM |
316 | |
317 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
318 | return -EFAULT; | |
319 | ||
86794881 MM |
320 | mask = ethtool_get_feature_mask(ethcmd); |
321 | mask &= dev->hw_features; | |
bc5787c6 MM |
322 | if (!mask) |
323 | return -EOPNOTSUPP; | |
86794881 | 324 | |
bc5787c6 MM |
325 | if (edata.data) |
326 | dev->wanted_features |= mask; | |
327 | else | |
328 | dev->wanted_features &= ~mask; | |
86794881 | 329 | |
bc5787c6 | 330 | __netdev_update_features(dev); |
86794881 | 331 | |
bc5787c6 MM |
332 | return 0; |
333 | } | |
334 | ||
02b3a552 MM |
335 | #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ |
336 | ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) | |
f646968f PM |
337 | #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ |
338 | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ | |
339 | NETIF_F_RXHASH) | |
bc5787c6 MM |
340 | |
341 | static u32 __ethtool_get_flags(struct net_device *dev) | |
342 | { | |
02b3a552 MM |
343 | u32 flags = 0; |
344 | ||
8a73125c DF |
345 | if (dev->features & NETIF_F_LRO) |
346 | flags |= ETH_FLAG_LRO; | |
347 | if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) | |
348 | flags |= ETH_FLAG_RXVLAN; | |
349 | if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) | |
350 | flags |= ETH_FLAG_TXVLAN; | |
351 | if (dev->features & NETIF_F_NTUPLE) | |
352 | flags |= ETH_FLAG_NTUPLE; | |
353 | if (dev->features & NETIF_F_RXHASH) | |
354 | flags |= ETH_FLAG_RXHASH; | |
02b3a552 MM |
355 | |
356 | return flags; | |
0a417704 MM |
357 | } |
358 | ||
bc5787c6 | 359 | static int __ethtool_set_flags(struct net_device *dev, u32 data) |
da8ac86c | 360 | { |
c8f44aff | 361 | netdev_features_t features = 0, changed; |
da8ac86c | 362 | |
02b3a552 | 363 | if (data & ~ETH_ALL_FLAGS) |
da8ac86c MM |
364 | return -EINVAL; |
365 | ||
8a73125c DF |
366 | if (data & ETH_FLAG_LRO) |
367 | features |= NETIF_F_LRO; | |
368 | if (data & ETH_FLAG_RXVLAN) | |
369 | features |= NETIF_F_HW_VLAN_CTAG_RX; | |
370 | if (data & ETH_FLAG_TXVLAN) | |
371 | features |= NETIF_F_HW_VLAN_CTAG_TX; | |
372 | if (data & ETH_FLAG_NTUPLE) | |
373 | features |= NETIF_F_NTUPLE; | |
374 | if (data & ETH_FLAG_RXHASH) | |
375 | features |= NETIF_F_RXHASH; | |
02b3a552 | 376 | |
da8ac86c | 377 | /* allow changing only bits set in hw_features */ |
02b3a552 | 378 | changed = (features ^ dev->features) & ETH_ALL_FEATURES; |
da8ac86c MM |
379 | if (changed & ~dev->hw_features) |
380 | return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; | |
381 | ||
382 | dev->wanted_features = | |
02b3a552 | 383 | (dev->wanted_features & ~changed) | (features & changed); |
da8ac86c | 384 | |
6cb6a27c | 385 | __netdev_update_features(dev); |
da8ac86c MM |
386 | |
387 | return 0; | |
388 | } | |
389 | ||
3f1ac7a7 DD |
390 | static void convert_legacy_u32_to_link_mode(unsigned long *dst, u32 legacy_u32) |
391 | { | |
392 | bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS); | |
393 | dst[0] = legacy_u32; | |
394 | } | |
395 | ||
396 | /* return false if src had higher bits set. lower bits always updated. */ | |
397 | static bool convert_link_mode_to_legacy_u32(u32 *legacy_u32, | |
398 | const unsigned long *src) | |
399 | { | |
400 | bool retval = true; | |
401 | ||
402 | /* TODO: following test will soon always be true */ | |
403 | if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) { | |
404 | __ETHTOOL_DECLARE_LINK_MODE_MASK(ext); | |
405 | ||
406 | bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS); | |
407 | bitmap_fill(ext, 32); | |
408 | bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS); | |
409 | if (bitmap_intersects(ext, src, | |
410 | __ETHTOOL_LINK_MODE_MASK_NBITS)) { | |
411 | /* src mask goes beyond bit 31 */ | |
412 | retval = false; | |
413 | } | |
414 | } | |
415 | *legacy_u32 = src[0]; | |
416 | return retval; | |
417 | } | |
418 | ||
419 | /* return false if legacy contained non-0 deprecated fields | |
420 | * transceiver/maxtxpkt/maxrxpkt. rest of ksettings always updated | |
421 | */ | |
422 | static bool | |
423 | convert_legacy_settings_to_link_ksettings( | |
424 | struct ethtool_link_ksettings *link_ksettings, | |
425 | const struct ethtool_cmd *legacy_settings) | |
426 | { | |
427 | bool retval = true; | |
428 | ||
429 | memset(link_ksettings, 0, sizeof(*link_ksettings)); | |
430 | ||
431 | /* This is used to tell users that driver is still using these | |
432 | * deprecated legacy fields, and they should not use | |
433 | * %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS | |
434 | */ | |
435 | if (legacy_settings->transceiver || | |
436 | legacy_settings->maxtxpkt || | |
437 | legacy_settings->maxrxpkt) | |
438 | retval = false; | |
439 | ||
440 | convert_legacy_u32_to_link_mode( | |
441 | link_ksettings->link_modes.supported, | |
442 | legacy_settings->supported); | |
443 | convert_legacy_u32_to_link_mode( | |
444 | link_ksettings->link_modes.advertising, | |
445 | legacy_settings->advertising); | |
446 | convert_legacy_u32_to_link_mode( | |
447 | link_ksettings->link_modes.lp_advertising, | |
448 | legacy_settings->lp_advertising); | |
449 | link_ksettings->base.speed | |
450 | = ethtool_cmd_speed(legacy_settings); | |
451 | link_ksettings->base.duplex | |
452 | = legacy_settings->duplex; | |
453 | link_ksettings->base.port | |
454 | = legacy_settings->port; | |
455 | link_ksettings->base.phy_address | |
456 | = legacy_settings->phy_address; | |
457 | link_ksettings->base.autoneg | |
458 | = legacy_settings->autoneg; | |
459 | link_ksettings->base.mdio_support | |
460 | = legacy_settings->mdio_support; | |
461 | link_ksettings->base.eth_tp_mdix | |
462 | = legacy_settings->eth_tp_mdix; | |
463 | link_ksettings->base.eth_tp_mdix_ctrl | |
464 | = legacy_settings->eth_tp_mdix_ctrl; | |
465 | return retval; | |
466 | } | |
467 | ||
468 | /* return false if ksettings link modes had higher bits | |
469 | * set. legacy_settings always updated (best effort) | |
470 | */ | |
471 | static bool | |
472 | convert_link_ksettings_to_legacy_settings( | |
473 | struct ethtool_cmd *legacy_settings, | |
474 | const struct ethtool_link_ksettings *link_ksettings) | |
475 | { | |
476 | bool retval = true; | |
477 | ||
478 | memset(legacy_settings, 0, sizeof(*legacy_settings)); | |
479 | /* this also clears the deprecated fields in legacy structure: | |
480 | * __u8 transceiver; | |
481 | * __u32 maxtxpkt; | |
482 | * __u32 maxrxpkt; | |
483 | */ | |
484 | ||
485 | retval &= convert_link_mode_to_legacy_u32( | |
486 | &legacy_settings->supported, | |
487 | link_ksettings->link_modes.supported); | |
488 | retval &= convert_link_mode_to_legacy_u32( | |
489 | &legacy_settings->advertising, | |
490 | link_ksettings->link_modes.advertising); | |
491 | retval &= convert_link_mode_to_legacy_u32( | |
492 | &legacy_settings->lp_advertising, | |
493 | link_ksettings->link_modes.lp_advertising); | |
494 | ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); | |
495 | legacy_settings->duplex | |
496 | = link_ksettings->base.duplex; | |
497 | legacy_settings->port | |
498 | = link_ksettings->base.port; | |
499 | legacy_settings->phy_address | |
500 | = link_ksettings->base.phy_address; | |
501 | legacy_settings->autoneg | |
502 | = link_ksettings->base.autoneg; | |
503 | legacy_settings->mdio_support | |
504 | = link_ksettings->base.mdio_support; | |
505 | legacy_settings->eth_tp_mdix | |
506 | = link_ksettings->base.eth_tp_mdix; | |
507 | legacy_settings->eth_tp_mdix_ctrl | |
508 | = link_ksettings->base.eth_tp_mdix_ctrl; | |
509 | return retval; | |
510 | } | |
511 | ||
512 | /* number of 32-bit words to store the user's link mode bitmaps */ | |
513 | #define __ETHTOOL_LINK_MODE_MASK_NU32 \ | |
514 | DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) | |
515 | ||
516 | /* layout of the struct passed from/to userland */ | |
517 | struct ethtool_link_usettings { | |
518 | struct ethtool_link_settings base; | |
519 | struct { | |
520 | __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; | |
521 | __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; | |
522 | __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; | |
523 | } link_modes; | |
524 | }; | |
525 | ||
526 | /* Internal kernel helper to query a device ethtool_link_settings. | |
527 | * | |
528 | * Backward compatibility note: for compatibility with legacy drivers | |
529 | * that implement only the ethtool_cmd API, this has to work with both | |
530 | * drivers implementing get_link_ksettings API and drivers | |
531 | * implementing get_settings API. When drivers implement get_settings | |
532 | * and report ethtool_cmd deprecated fields | |
533 | * (transceiver/maxrxpkt/maxtxpkt), these fields are silently ignored | |
534 | * because the resulting struct ethtool_link_settings does not report them. | |
535 | */ | |
536 | int __ethtool_get_link_ksettings(struct net_device *dev, | |
537 | struct ethtool_link_ksettings *link_ksettings) | |
538 | { | |
539 | int err; | |
540 | struct ethtool_cmd cmd; | |
541 | ||
542 | ASSERT_RTNL(); | |
543 | ||
544 | if (dev->ethtool_ops->get_link_ksettings) { | |
545 | memset(link_ksettings, 0, sizeof(*link_ksettings)); | |
546 | return dev->ethtool_ops->get_link_ksettings(dev, | |
547 | link_ksettings); | |
548 | } | |
549 | ||
550 | /* driver doesn't support %ethtool_link_ksettings API. revert to | |
551 | * legacy %ethtool_cmd API, unless it's not supported either. | |
552 | * TODO: remove when ethtool_ops::get_settings disappears internally | |
553 | */ | |
3237fc63 DD |
554 | if (!dev->ethtool_ops->get_settings) |
555 | return -EOPNOTSUPP; | |
556 | ||
557 | memset(&cmd, 0, sizeof(cmd)); | |
558 | cmd.cmd = ETHTOOL_GSET; | |
559 | err = dev->ethtool_ops->get_settings(dev, &cmd); | |
3f1ac7a7 DD |
560 | if (err < 0) |
561 | return err; | |
562 | ||
563 | /* we ignore deprecated fields transceiver/maxrxpkt/maxtxpkt | |
564 | */ | |
565 | convert_legacy_settings_to_link_ksettings(link_ksettings, &cmd); | |
566 | return err; | |
567 | } | |
568 | EXPORT_SYMBOL(__ethtool_get_link_ksettings); | |
569 | ||
570 | /* convert ethtool_link_usettings in user space to a kernel internal | |
571 | * ethtool_link_ksettings. return 0 on success, errno on error. | |
572 | */ | |
573 | static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, | |
574 | const void __user *from) | |
575 | { | |
576 | struct ethtool_link_usettings link_usettings; | |
577 | ||
578 | if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) | |
579 | return -EFAULT; | |
580 | ||
581 | memcpy(&to->base, &link_usettings.base, sizeof(to->base)); | |
582 | bitmap_from_u32array(to->link_modes.supported, | |
583 | __ETHTOOL_LINK_MODE_MASK_NBITS, | |
584 | link_usettings.link_modes.supported, | |
585 | __ETHTOOL_LINK_MODE_MASK_NU32); | |
586 | bitmap_from_u32array(to->link_modes.advertising, | |
587 | __ETHTOOL_LINK_MODE_MASK_NBITS, | |
588 | link_usettings.link_modes.advertising, | |
589 | __ETHTOOL_LINK_MODE_MASK_NU32); | |
590 | bitmap_from_u32array(to->link_modes.lp_advertising, | |
591 | __ETHTOOL_LINK_MODE_MASK_NBITS, | |
592 | link_usettings.link_modes.lp_advertising, | |
593 | __ETHTOOL_LINK_MODE_MASK_NU32); | |
594 | ||
595 | return 0; | |
596 | } | |
597 | ||
598 | /* convert a kernel internal ethtool_link_ksettings to | |
599 | * ethtool_link_usettings in user space. return 0 on success, errno on | |
600 | * error. | |
601 | */ | |
602 | static int | |
603 | store_link_ksettings_for_user(void __user *to, | |
604 | const struct ethtool_link_ksettings *from) | |
605 | { | |
606 | struct ethtool_link_usettings link_usettings; | |
607 | ||
608 | memcpy(&link_usettings.base, &from->base, sizeof(link_usettings)); | |
609 | bitmap_to_u32array(link_usettings.link_modes.supported, | |
610 | __ETHTOOL_LINK_MODE_MASK_NU32, | |
611 | from->link_modes.supported, | |
612 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
613 | bitmap_to_u32array(link_usettings.link_modes.advertising, | |
614 | __ETHTOOL_LINK_MODE_MASK_NU32, | |
615 | from->link_modes.advertising, | |
616 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
617 | bitmap_to_u32array(link_usettings.link_modes.lp_advertising, | |
618 | __ETHTOOL_LINK_MODE_MASK_NU32, | |
619 | from->link_modes.lp_advertising, | |
620 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
621 | ||
622 | if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) | |
623 | return -EFAULT; | |
624 | ||
625 | return 0; | |
626 | } | |
627 | ||
628 | /* Query device for its ethtool_link_settings. | |
629 | * | |
630 | * Backward compatibility note: this function must fail when driver | |
631 | * does not implement ethtool::get_link_ksettings, even if legacy | |
632 | * ethtool_ops::get_settings is implemented. This tells new versions | |
633 | * of ethtool that they should use the legacy API %ETHTOOL_GSET for | |
634 | * this driver, so that they can correctly access the ethtool_cmd | |
635 | * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver | |
636 | * implements ethtool_ops::get_settings anymore. | |
637 | */ | |
638 | static int ethtool_get_link_ksettings(struct net_device *dev, | |
639 | void __user *useraddr) | |
640 | { | |
641 | int err = 0; | |
642 | struct ethtool_link_ksettings link_ksettings; | |
643 | ||
644 | ASSERT_RTNL(); | |
645 | ||
646 | if (!dev->ethtool_ops->get_link_ksettings) | |
647 | return -EOPNOTSUPP; | |
648 | ||
649 | /* handle bitmap nbits handshake */ | |
650 | if (copy_from_user(&link_ksettings.base, useraddr, | |
651 | sizeof(link_ksettings.base))) | |
652 | return -EFAULT; | |
653 | ||
654 | if (__ETHTOOL_LINK_MODE_MASK_NU32 | |
655 | != link_ksettings.base.link_mode_masks_nwords) { | |
656 | /* wrong link mode nbits requested */ | |
657 | memset(&link_ksettings, 0, sizeof(link_ksettings)); | |
793cf87d | 658 | link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; |
3f1ac7a7 DD |
659 | /* send back number of words required as negative val */ |
660 | compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, | |
661 | "need too many bits for link modes!"); | |
662 | link_ksettings.base.link_mode_masks_nwords | |
663 | = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); | |
664 | ||
665 | /* copy the base fields back to user, not the link | |
666 | * mode bitmaps | |
667 | */ | |
668 | if (copy_to_user(useraddr, &link_ksettings.base, | |
669 | sizeof(link_ksettings.base))) | |
670 | return -EFAULT; | |
671 | ||
672 | return 0; | |
673 | } | |
674 | ||
675 | /* handshake successful: user/kernel agree on | |
676 | * link_mode_masks_nwords | |
677 | */ | |
678 | ||
679 | memset(&link_ksettings, 0, sizeof(link_ksettings)); | |
680 | err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); | |
681 | if (err < 0) | |
682 | return err; | |
683 | ||
684 | /* make sure we tell the right values to user */ | |
685 | link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; | |
686 | link_ksettings.base.link_mode_masks_nwords | |
687 | = __ETHTOOL_LINK_MODE_MASK_NU32; | |
688 | ||
689 | return store_link_ksettings_for_user(useraddr, &link_ksettings); | |
690 | } | |
691 | ||
692 | /* Update device ethtool_link_settings. | |
693 | * | |
694 | * Backward compatibility note: this function must fail when driver | |
695 | * does not implement ethtool::set_link_ksettings, even if legacy | |
696 | * ethtool_ops::set_settings is implemented. This tells new versions | |
697 | * of ethtool that they should use the legacy API %ETHTOOL_SSET for | |
698 | * this driver, so that they can correctly update the ethtool_cmd | |
699 | * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver | |
700 | * implements ethtool_ops::get_settings anymore. | |
701 | */ | |
702 | static int ethtool_set_link_ksettings(struct net_device *dev, | |
703 | void __user *useraddr) | |
704 | { | |
705 | int err; | |
706 | struct ethtool_link_ksettings link_ksettings; | |
707 | ||
708 | ASSERT_RTNL(); | |
709 | ||
710 | if (!dev->ethtool_ops->set_link_ksettings) | |
711 | return -EOPNOTSUPP; | |
712 | ||
713 | /* make sure nbits field has expected value */ | |
714 | if (copy_from_user(&link_ksettings.base, useraddr, | |
715 | sizeof(link_ksettings.base))) | |
716 | return -EFAULT; | |
717 | ||
718 | if (__ETHTOOL_LINK_MODE_MASK_NU32 | |
719 | != link_ksettings.base.link_mode_masks_nwords) | |
720 | return -EINVAL; | |
721 | ||
722 | /* copy the whole structure, now that we know it has expected | |
723 | * format | |
724 | */ | |
725 | err = load_link_ksettings_from_user(&link_ksettings, useraddr); | |
726 | if (err) | |
727 | return err; | |
728 | ||
729 | /* re-check nwords field, just in case */ | |
730 | if (__ETHTOOL_LINK_MODE_MASK_NU32 | |
731 | != link_ksettings.base.link_mode_masks_nwords) | |
732 | return -EINVAL; | |
733 | ||
734 | return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); | |
735 | } | |
736 | ||
3f1ac7a7 DD |
737 | static void |
738 | warn_incomplete_ethtool_legacy_settings_conversion(const char *details) | |
739 | { | |
740 | char name[sizeof(current->comm)]; | |
741 | ||
742 | pr_info_once("warning: `%s' uses legacy ethtool link settings API, %s\n", | |
743 | get_task_comm(name, current), details); | |
744 | } | |
745 | ||
746 | /* Query device for its ethtool_cmd settings. | |
747 | * | |
748 | * Backward compatibility note: for compatibility with legacy ethtool, | |
749 | * this has to work with both drivers implementing get_link_ksettings | |
750 | * API and drivers implementing get_settings API. When drivers | |
751 | * implement get_link_ksettings and report higher link mode bits, a | |
752 | * kernel warning is logged once (with name of 1st driver/device) to | |
753 | * recommend user to upgrade ethtool, but the command is successful | |
754 | * (only the lower link mode bits reported back to user). | |
755 | */ | |
4bc71cb9 JP |
756 | static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) |
757 | { | |
4bc71cb9 JP |
758 | struct ethtool_cmd cmd; |
759 | ||
3f1ac7a7 DD |
760 | ASSERT_RTNL(); |
761 | ||
762 | if (dev->ethtool_ops->get_link_ksettings) { | |
763 | /* First, use link_ksettings API if it is supported */ | |
764 | int err; | |
765 | struct ethtool_link_ksettings link_ksettings; | |
766 | ||
767 | memset(&link_ksettings, 0, sizeof(link_ksettings)); | |
768 | err = dev->ethtool_ops->get_link_ksettings(dev, | |
769 | &link_ksettings); | |
770 | if (err < 0) | |
771 | return err; | |
772 | if (!convert_link_ksettings_to_legacy_settings(&cmd, | |
773 | &link_ksettings)) | |
774 | warn_incomplete_ethtool_legacy_settings_conversion( | |
775 | "link modes are only partially reported"); | |
776 | ||
777 | /* send a sensible cmd tag back to user */ | |
778 | cmd.cmd = ETHTOOL_GSET; | |
779 | } else { | |
3f1ac7a7 DD |
780 | /* driver doesn't support %ethtool_link_ksettings |
781 | * API. revert to legacy %ethtool_cmd API, unless it's | |
782 | * not supported either. | |
783 | */ | |
3237fc63 DD |
784 | int err; |
785 | ||
786 | if (!dev->ethtool_ops->get_settings) | |
787 | return -EOPNOTSUPP; | |
788 | ||
789 | memset(&cmd, 0, sizeof(cmd)); | |
790 | cmd.cmd = ETHTOOL_GSET; | |
791 | err = dev->ethtool_ops->get_settings(dev, &cmd); | |
3f1ac7a7 DD |
792 | if (err < 0) |
793 | return err; | |
794 | } | |
1da177e4 LT |
795 | |
796 | if (copy_to_user(useraddr, &cmd, sizeof(cmd))) | |
797 | return -EFAULT; | |
3f1ac7a7 | 798 | |
1da177e4 LT |
799 | return 0; |
800 | } | |
801 | ||
3f1ac7a7 DD |
802 | /* Update device link settings with given ethtool_cmd. |
803 | * | |
804 | * Backward compatibility note: for compatibility with legacy ethtool, | |
805 | * this has to work with both drivers implementing set_link_ksettings | |
806 | * API and drivers implementing set_settings API. When drivers | |
807 | * implement set_link_ksettings and user's request updates deprecated | |
808 | * ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel | |
809 | * warning is logged once (with name of 1st driver/device) to | |
810 | * recommend user to upgrade ethtool, and the request is rejected. | |
811 | */ | |
1da177e4 LT |
812 | static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) |
813 | { | |
814 | struct ethtool_cmd cmd; | |
815 | ||
3f1ac7a7 | 816 | ASSERT_RTNL(); |
1da177e4 LT |
817 | |
818 | if (copy_from_user(&cmd, useraddr, sizeof(cmd))) | |
819 | return -EFAULT; | |
820 | ||
3f1ac7a7 DD |
821 | /* first, try new %ethtool_link_ksettings API. */ |
822 | if (dev->ethtool_ops->set_link_ksettings) { | |
823 | struct ethtool_link_ksettings link_ksettings; | |
824 | ||
825 | if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, | |
826 | &cmd)) | |
827 | return -EINVAL; | |
828 | ||
829 | link_ksettings.base.cmd = ETHTOOL_SLINKSETTINGS; | |
830 | link_ksettings.base.link_mode_masks_nwords | |
831 | = __ETHTOOL_LINK_MODE_MASK_NU32; | |
832 | return dev->ethtool_ops->set_link_ksettings(dev, | |
833 | &link_ksettings); | |
834 | } | |
835 | ||
836 | /* legacy %ethtool_cmd API */ | |
837 | ||
838 | /* TODO: return -EOPNOTSUPP when ethtool_ops::get_settings | |
839 | * disappears internally | |
840 | */ | |
841 | ||
842 | if (!dev->ethtool_ops->set_settings) | |
843 | return -EOPNOTSUPP; | |
844 | ||
1da177e4 LT |
845 | return dev->ethtool_ops->set_settings(dev, &cmd); |
846 | } | |
847 | ||
97f8aefb | 848 | static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev, |
849 | void __user *useraddr) | |
1da177e4 LT |
850 | { |
851 | struct ethtool_drvinfo info; | |
76fd8593 | 852 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 853 | |
1da177e4 LT |
854 | memset(&info, 0, sizeof(info)); |
855 | info.cmd = ETHTOOL_GDRVINFO; | |
c03a14e8 | 856 | if (ops->get_drvinfo) { |
01414802 BH |
857 | ops->get_drvinfo(dev, &info); |
858 | } else if (dev->dev.parent && dev->dev.parent->driver) { | |
859 | strlcpy(info.bus_info, dev_name(dev->dev.parent), | |
860 | sizeof(info.bus_info)); | |
861 | strlcpy(info.driver, dev->dev.parent->driver->name, | |
862 | sizeof(info.driver)); | |
863 | } else { | |
864 | return -EOPNOTSUPP; | |
865 | } | |
1da177e4 | 866 | |
723b2f57 JG |
867 | /* |
868 | * this method of obtaining string set info is deprecated; | |
d17792eb | 869 | * Use ETHTOOL_GSSET_INFO instead. |
723b2f57 | 870 | */ |
c03a14e8 | 871 | if (ops->get_sset_count) { |
ff03d49f JG |
872 | int rc; |
873 | ||
874 | rc = ops->get_sset_count(dev, ETH_SS_TEST); | |
875 | if (rc >= 0) | |
876 | info.testinfo_len = rc; | |
877 | rc = ops->get_sset_count(dev, ETH_SS_STATS); | |
878 | if (rc >= 0) | |
879 | info.n_stats = rc; | |
339bf024 JG |
880 | rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); |
881 | if (rc >= 0) | |
882 | info.n_priv_flags = rc; | |
ff03d49f | 883 | } |
c03a14e8 | 884 | if (ops->get_regs_len) |
1da177e4 | 885 | info.regdump_len = ops->get_regs_len(dev); |
c03a14e8 | 886 | if (ops->get_eeprom_len) |
1da177e4 LT |
887 | info.eedump_len = ops->get_eeprom_len(dev); |
888 | ||
889 | if (copy_to_user(useraddr, &info, sizeof(info))) | |
890 | return -EFAULT; | |
891 | return 0; | |
892 | } | |
893 | ||
f5c445ed | 894 | static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, |
97f8aefb | 895 | void __user *useraddr) |
723b2f57 JG |
896 | { |
897 | struct ethtool_sset_info info; | |
723b2f57 JG |
898 | u64 sset_mask; |
899 | int i, idx = 0, n_bits = 0, ret, rc; | |
900 | u32 *info_buf = NULL; | |
901 | ||
723b2f57 JG |
902 | if (copy_from_user(&info, useraddr, sizeof(info))) |
903 | return -EFAULT; | |
904 | ||
905 | /* store copy of mask, because we zero struct later on */ | |
906 | sset_mask = info.sset_mask; | |
907 | if (!sset_mask) | |
908 | return 0; | |
909 | ||
910 | /* calculate size of return buffer */ | |
d17792eb | 911 | n_bits = hweight64(sset_mask); |
723b2f57 JG |
912 | |
913 | memset(&info, 0, sizeof(info)); | |
914 | info.cmd = ETHTOOL_GSSET_INFO; | |
915 | ||
916 | info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER); | |
917 | if (!info_buf) | |
918 | return -ENOMEM; | |
919 | ||
920 | /* | |
921 | * fill return buffer based on input bitmask and successful | |
922 | * get_sset_count return | |
923 | */ | |
924 | for (i = 0; i < 64; i++) { | |
925 | if (!(sset_mask & (1ULL << i))) | |
926 | continue; | |
927 | ||
340ae165 | 928 | rc = __ethtool_get_sset_count(dev, i); |
723b2f57 JG |
929 | if (rc >= 0) { |
930 | info.sset_mask |= (1ULL << i); | |
931 | info_buf[idx++] = rc; | |
932 | } | |
933 | } | |
934 | ||
935 | ret = -EFAULT; | |
936 | if (copy_to_user(useraddr, &info, sizeof(info))) | |
937 | goto out; | |
938 | ||
939 | useraddr += offsetof(struct ethtool_sset_info, data); | |
940 | if (copy_to_user(useraddr, info_buf, idx * sizeof(u32))) | |
941 | goto out; | |
942 | ||
943 | ret = 0; | |
944 | ||
945 | out: | |
946 | kfree(info_buf); | |
947 | return ret; | |
948 | } | |
949 | ||
97f8aefb | 950 | static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, |
bf988435 | 951 | u32 cmd, void __user *useraddr) |
0853ad66 | 952 | { |
bf988435 BH |
953 | struct ethtool_rxnfc info; |
954 | size_t info_size = sizeof(info); | |
55664f32 | 955 | int rc; |
0853ad66 | 956 | |
59089d8d | 957 | if (!dev->ethtool_ops->set_rxnfc) |
0853ad66 SB |
958 | return -EOPNOTSUPP; |
959 | ||
bf988435 BH |
960 | /* struct ethtool_rxnfc was originally defined for |
961 | * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data | |
962 | * members. User-space might still be using that | |
963 | * definition. */ | |
964 | if (cmd == ETHTOOL_SRXFH) | |
965 | info_size = (offsetof(struct ethtool_rxnfc, data) + | |
966 | sizeof(info.data)); | |
967 | ||
968 | if (copy_from_user(&info, useraddr, info_size)) | |
0853ad66 SB |
969 | return -EFAULT; |
970 | ||
55664f32 BH |
971 | rc = dev->ethtool_ops->set_rxnfc(dev, &info); |
972 | if (rc) | |
973 | return rc; | |
974 | ||
975 | if (cmd == ETHTOOL_SRXCLSRLINS && | |
976 | copy_to_user(useraddr, &info, info_size)) | |
977 | return -EFAULT; | |
978 | ||
979 | return 0; | |
0853ad66 SB |
980 | } |
981 | ||
97f8aefb | 982 | static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, |
bf988435 | 983 | u32 cmd, void __user *useraddr) |
0853ad66 SB |
984 | { |
985 | struct ethtool_rxnfc info; | |
bf988435 | 986 | size_t info_size = sizeof(info); |
59089d8d SB |
987 | const struct ethtool_ops *ops = dev->ethtool_ops; |
988 | int ret; | |
989 | void *rule_buf = NULL; | |
0853ad66 | 990 | |
59089d8d | 991 | if (!ops->get_rxnfc) |
0853ad66 SB |
992 | return -EOPNOTSUPP; |
993 | ||
bf988435 BH |
994 | /* struct ethtool_rxnfc was originally defined for |
995 | * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data | |
996 | * members. User-space might still be using that | |
997 | * definition. */ | |
998 | if (cmd == ETHTOOL_GRXFH) | |
999 | info_size = (offsetof(struct ethtool_rxnfc, data) + | |
1000 | sizeof(info.data)); | |
1001 | ||
1002 | if (copy_from_user(&info, useraddr, info_size)) | |
0853ad66 SB |
1003 | return -EFAULT; |
1004 | ||
59089d8d SB |
1005 | if (info.cmd == ETHTOOL_GRXCLSRLALL) { |
1006 | if (info.rule_cnt > 0) { | |
db048b69 | 1007 | if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) |
ae6df5f9 | 1008 | rule_buf = kzalloc(info.rule_cnt * sizeof(u32), |
db048b69 | 1009 | GFP_USER); |
59089d8d SB |
1010 | if (!rule_buf) |
1011 | return -ENOMEM; | |
1012 | } | |
1013 | } | |
0853ad66 | 1014 | |
59089d8d SB |
1015 | ret = ops->get_rxnfc(dev, &info, rule_buf); |
1016 | if (ret < 0) | |
1017 | goto err_out; | |
1018 | ||
1019 | ret = -EFAULT; | |
bf988435 | 1020 | if (copy_to_user(useraddr, &info, info_size)) |
59089d8d SB |
1021 | goto err_out; |
1022 | ||
1023 | if (rule_buf) { | |
1024 | useraddr += offsetof(struct ethtool_rxnfc, rule_locs); | |
1025 | if (copy_to_user(useraddr, rule_buf, | |
1026 | info.rule_cnt * sizeof(u32))) | |
1027 | goto err_out; | |
1028 | } | |
1029 | ret = 0; | |
1030 | ||
1031 | err_out: | |
c9caceca | 1032 | kfree(rule_buf); |
59089d8d SB |
1033 | |
1034 | return ret; | |
0853ad66 SB |
1035 | } |
1036 | ||
3de0b592 VD |
1037 | static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, |
1038 | struct ethtool_rxnfc *rx_rings, | |
1039 | u32 size) | |
1040 | { | |
fb95cd8d | 1041 | int i; |
3de0b592 VD |
1042 | |
1043 | if (copy_from_user(indir, useraddr, size * sizeof(indir[0]))) | |
fb95cd8d | 1044 | return -EFAULT; |
3de0b592 VD |
1045 | |
1046 | /* Validate ring indices */ | |
fb95cd8d BH |
1047 | for (i = 0; i < size; i++) |
1048 | if (indir[i] >= rx_rings->data) | |
1049 | return -EINVAL; | |
1050 | ||
1051 | return 0; | |
3de0b592 VD |
1052 | } |
1053 | ||
ba905f5e | 1054 | u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; |
960fb622 ED |
1055 | |
1056 | void netdev_rss_key_fill(void *buffer, size_t len) | |
1057 | { | |
1058 | BUG_ON(len > sizeof(netdev_rss_key)); | |
1059 | net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); | |
1060 | memcpy(buffer, netdev_rss_key, len); | |
1061 | } | |
1062 | EXPORT_SYMBOL(netdev_rss_key_fill); | |
1063 | ||
d4ab4286 KJ |
1064 | static int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max) |
1065 | { | |
1066 | u32 dev_size, current_max = 0; | |
1067 | u32 *indir; | |
1068 | int ret; | |
1069 | ||
1070 | if (!dev->ethtool_ops->get_rxfh_indir_size || | |
1071 | !dev->ethtool_ops->get_rxfh) | |
1072 | return -EOPNOTSUPP; | |
1073 | dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev); | |
1074 | if (dev_size == 0) | |
1075 | return -EOPNOTSUPP; | |
1076 | ||
1077 | indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); | |
1078 | if (!indir) | |
1079 | return -ENOMEM; | |
1080 | ||
1081 | ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL); | |
1082 | if (ret) | |
1083 | goto out; | |
1084 | ||
1085 | while (dev_size--) | |
1086 | current_max = max(current_max, indir[dev_size]); | |
1087 | ||
1088 | *max = current_max; | |
1089 | ||
1090 | out: | |
1091 | kfree(indir); | |
1092 | return ret; | |
1093 | } | |
1094 | ||
a5b6ee29 BH |
1095 | static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, |
1096 | void __user *useraddr) | |
1097 | { | |
7850f63f BH |
1098 | u32 user_size, dev_size; |
1099 | u32 *indir; | |
a5b6ee29 BH |
1100 | int ret; |
1101 | ||
7850f63f | 1102 | if (!dev->ethtool_ops->get_rxfh_indir_size || |
fe62d001 | 1103 | !dev->ethtool_ops->get_rxfh) |
7850f63f BH |
1104 | return -EOPNOTSUPP; |
1105 | dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev); | |
1106 | if (dev_size == 0) | |
a5b6ee29 BH |
1107 | return -EOPNOTSUPP; |
1108 | ||
7850f63f | 1109 | if (copy_from_user(&user_size, |
a5b6ee29 | 1110 | useraddr + offsetof(struct ethtool_rxfh_indir, size), |
7850f63f | 1111 | sizeof(user_size))) |
a5b6ee29 BH |
1112 | return -EFAULT; |
1113 | ||
7850f63f BH |
1114 | if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), |
1115 | &dev_size, sizeof(dev_size))) | |
1116 | return -EFAULT; | |
1117 | ||
1118 | /* If the user buffer size is 0, this is just a query for the | |
1119 | * device table size. Otherwise, if it's smaller than the | |
1120 | * device table size it's an error. | |
1121 | */ | |
1122 | if (user_size < dev_size) | |
1123 | return user_size == 0 ? 0 : -EINVAL; | |
1124 | ||
1125 | indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); | |
a5b6ee29 BH |
1126 | if (!indir) |
1127 | return -ENOMEM; | |
1128 | ||
892311f6 | 1129 | ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL); |
a5b6ee29 BH |
1130 | if (ret) |
1131 | goto out; | |
1132 | ||
7850f63f BH |
1133 | if (copy_to_user(useraddr + |
1134 | offsetof(struct ethtool_rxfh_indir, ring_index[0]), | |
1135 | indir, dev_size * sizeof(indir[0]))) | |
a5b6ee29 BH |
1136 | ret = -EFAULT; |
1137 | ||
1138 | out: | |
1139 | kfree(indir); | |
1140 | return ret; | |
1141 | } | |
1142 | ||
1143 | static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, | |
1144 | void __user *useraddr) | |
1145 | { | |
7850f63f BH |
1146 | struct ethtool_rxnfc rx_rings; |
1147 | u32 user_size, dev_size, i; | |
1148 | u32 *indir; | |
c03a14e8 | 1149 | const struct ethtool_ops *ops = dev->ethtool_ops; |
a5b6ee29 | 1150 | int ret; |
3de0b592 | 1151 | u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); |
a5b6ee29 | 1152 | |
fe62d001 | 1153 | if (!ops->get_rxfh_indir_size || !ops->set_rxfh || |
c03a14e8 | 1154 | !ops->get_rxnfc) |
7850f63f | 1155 | return -EOPNOTSUPP; |
c03a14e8 JP |
1156 | |
1157 | dev_size = ops->get_rxfh_indir_size(dev); | |
7850f63f | 1158 | if (dev_size == 0) |
a5b6ee29 BH |
1159 | return -EOPNOTSUPP; |
1160 | ||
7850f63f | 1161 | if (copy_from_user(&user_size, |
a5b6ee29 | 1162 | useraddr + offsetof(struct ethtool_rxfh_indir, size), |
7850f63f | 1163 | sizeof(user_size))) |
a5b6ee29 BH |
1164 | return -EFAULT; |
1165 | ||
278bc429 | 1166 | if (user_size != 0 && user_size != dev_size) |
7850f63f BH |
1167 | return -EINVAL; |
1168 | ||
1169 | indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); | |
a5b6ee29 BH |
1170 | if (!indir) |
1171 | return -ENOMEM; | |
1172 | ||
7850f63f | 1173 | rx_rings.cmd = ETHTOOL_GRXRINGS; |
c03a14e8 | 1174 | ret = ops->get_rxnfc(dev, &rx_rings, NULL); |
7850f63f BH |
1175 | if (ret) |
1176 | goto out; | |
278bc429 BH |
1177 | |
1178 | if (user_size == 0) { | |
1179 | for (i = 0; i < dev_size; i++) | |
1180 | indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); | |
1181 | } else { | |
3de0b592 VD |
1182 | ret = ethtool_copy_validate_indir(indir, |
1183 | useraddr + ringidx_offset, | |
1184 | &rx_rings, | |
1185 | dev_size); | |
1186 | if (ret) | |
1187 | goto out; | |
1188 | } | |
1189 | ||
892311f6 | 1190 | ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE); |
d4ab4286 KJ |
1191 | if (ret) |
1192 | goto out; | |
1193 | ||
1194 | /* indicate whether rxfh was set to default */ | |
1195 | if (user_size == 0) | |
1196 | dev->priv_flags &= ~IFF_RXFH_CONFIGURED; | |
1197 | else | |
1198 | dev->priv_flags |= IFF_RXFH_CONFIGURED; | |
3de0b592 VD |
1199 | |
1200 | out: | |
1201 | kfree(indir); | |
1202 | return ret; | |
1203 | } | |
1204 | ||
1205 | static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, | |
1206 | void __user *useraddr) | |
1207 | { | |
1208 | int ret; | |
1209 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
f062a384 | 1210 | u32 user_indir_size, user_key_size; |
3de0b592 | 1211 | u32 dev_indir_size = 0, dev_key_size = 0; |
f062a384 | 1212 | struct ethtool_rxfh rxfh; |
3de0b592 | 1213 | u32 total_size; |
f062a384 | 1214 | u32 indir_bytes; |
3de0b592 | 1215 | u32 *indir = NULL; |
892311f6 | 1216 | u8 dev_hfunc = 0; |
3de0b592 VD |
1217 | u8 *hkey = NULL; |
1218 | u8 *rss_config; | |
1219 | ||
892311f6 | 1220 | if (!ops->get_rxfh) |
3de0b592 VD |
1221 | return -EOPNOTSUPP; |
1222 | ||
1223 | if (ops->get_rxfh_indir_size) | |
1224 | dev_indir_size = ops->get_rxfh_indir_size(dev); | |
3de0b592 VD |
1225 | if (ops->get_rxfh_key_size) |
1226 | dev_key_size = ops->get_rxfh_key_size(dev); | |
1227 | ||
f062a384 | 1228 | if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) |
3de0b592 | 1229 | return -EFAULT; |
f062a384 BH |
1230 | user_indir_size = rxfh.indir_size; |
1231 | user_key_size = rxfh.key_size; | |
3de0b592 | 1232 | |
f062a384 | 1233 | /* Check that reserved fields are 0 for now */ |
892311f6 EP |
1234 | if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] || |
1235 | rxfh.rsvd8[2] || rxfh.rsvd32) | |
f062a384 BH |
1236 | return -EINVAL; |
1237 | ||
1238 | rxfh.indir_size = dev_indir_size; | |
1239 | rxfh.key_size = dev_key_size; | |
1240 | if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) | |
3de0b592 VD |
1241 | return -EFAULT; |
1242 | ||
3de0b592 VD |
1243 | if ((user_indir_size && (user_indir_size != dev_indir_size)) || |
1244 | (user_key_size && (user_key_size != dev_key_size))) | |
1245 | return -EINVAL; | |
1246 | ||
1247 | indir_bytes = user_indir_size * sizeof(indir[0]); | |
1248 | total_size = indir_bytes + user_key_size; | |
1249 | rss_config = kzalloc(total_size, GFP_USER); | |
1250 | if (!rss_config) | |
1251 | return -ENOMEM; | |
1252 | ||
1253 | if (user_indir_size) | |
1254 | indir = (u32 *)rss_config; | |
1255 | ||
1256 | if (user_key_size) | |
1257 | hkey = rss_config + indir_bytes; | |
1258 | ||
892311f6 EP |
1259 | ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc); |
1260 | if (ret) | |
1261 | goto out; | |
3de0b592 | 1262 | |
892311f6 EP |
1263 | if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), |
1264 | &dev_hfunc, sizeof(rxfh.hfunc))) { | |
1265 | ret = -EFAULT; | |
1266 | } else if (copy_to_user(useraddr + | |
1267 | offsetof(struct ethtool_rxfh, rss_config[0]), | |
1268 | rss_config, total_size)) { | |
1269 | ret = -EFAULT; | |
1270 | } | |
1271 | out: | |
3de0b592 VD |
1272 | kfree(rss_config); |
1273 | ||
1274 | return ret; | |
1275 | } | |
1276 | ||
1277 | static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, | |
1278 | void __user *useraddr) | |
1279 | { | |
1280 | int ret; | |
1281 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
1282 | struct ethtool_rxnfc rx_rings; | |
f062a384 BH |
1283 | struct ethtool_rxfh rxfh; |
1284 | u32 dev_indir_size = 0, dev_key_size = 0, i; | |
3de0b592 VD |
1285 | u32 *indir = NULL, indir_bytes = 0; |
1286 | u8 *hkey = NULL; | |
1287 | u8 *rss_config; | |
3de0b592 VD |
1288 | u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); |
1289 | ||
892311f6 | 1290 | if (!ops->get_rxnfc || !ops->set_rxfh) |
3de0b592 VD |
1291 | return -EOPNOTSUPP; |
1292 | ||
1293 | if (ops->get_rxfh_indir_size) | |
1294 | dev_indir_size = ops->get_rxfh_indir_size(dev); | |
3de0b592 | 1295 | if (ops->get_rxfh_key_size) |
d340c862 | 1296 | dev_key_size = ops->get_rxfh_key_size(dev); |
3de0b592 | 1297 | |
f062a384 | 1298 | if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) |
3de0b592 VD |
1299 | return -EFAULT; |
1300 | ||
f062a384 | 1301 | /* Check that reserved fields are 0 for now */ |
892311f6 EP |
1302 | if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] || |
1303 | rxfh.rsvd8[2] || rxfh.rsvd32) | |
f062a384 BH |
1304 | return -EINVAL; |
1305 | ||
892311f6 EP |
1306 | /* If either indir, hash key or function is valid, proceed further. |
1307 | * Must request at least one change: indir size, hash key or function. | |
3de0b592 | 1308 | */ |
f062a384 BH |
1309 | if ((rxfh.indir_size && |
1310 | rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && | |
1311 | rxfh.indir_size != dev_indir_size) || | |
1312 | (rxfh.key_size && (rxfh.key_size != dev_key_size)) || | |
1313 | (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && | |
892311f6 | 1314 | rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE)) |
3de0b592 VD |
1315 | return -EINVAL; |
1316 | ||
f062a384 | 1317 | if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) |
3de0b592 VD |
1318 | indir_bytes = dev_indir_size * sizeof(indir[0]); |
1319 | ||
f062a384 | 1320 | rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER); |
3de0b592 VD |
1321 | if (!rss_config) |
1322 | return -ENOMEM; | |
1323 | ||
1324 | rx_rings.cmd = ETHTOOL_GRXRINGS; | |
1325 | ret = ops->get_rxnfc(dev, &rx_rings, NULL); | |
1326 | if (ret) | |
1327 | goto out; | |
1328 | ||
f062a384 BH |
1329 | /* rxfh.indir_size == 0 means reset the indir table to default. |
1330 | * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. | |
3de0b592 | 1331 | */ |
f062a384 BH |
1332 | if (rxfh.indir_size && |
1333 | rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { | |
3de0b592 VD |
1334 | indir = (u32 *)rss_config; |
1335 | ret = ethtool_copy_validate_indir(indir, | |
1336 | useraddr + rss_cfg_offset, | |
1337 | &rx_rings, | |
f062a384 | 1338 | rxfh.indir_size); |
3de0b592 | 1339 | if (ret) |
7850f63f | 1340 | goto out; |
f062a384 | 1341 | } else if (rxfh.indir_size == 0) { |
3de0b592 VD |
1342 | indir = (u32 *)rss_config; |
1343 | for (i = 0; i < dev_indir_size; i++) | |
1344 | indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); | |
1345 | } | |
278bc429 | 1346 | |
f062a384 | 1347 | if (rxfh.key_size) { |
3de0b592 VD |
1348 | hkey = rss_config + indir_bytes; |
1349 | if (copy_from_user(hkey, | |
1350 | useraddr + rss_cfg_offset + indir_bytes, | |
f062a384 | 1351 | rxfh.key_size)) { |
3de0b592 VD |
1352 | ret = -EFAULT; |
1353 | goto out; | |
278bc429 | 1354 | } |
7850f63f BH |
1355 | } |
1356 | ||
892311f6 | 1357 | ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc); |
d4ab4286 KJ |
1358 | if (ret) |
1359 | goto out; | |
1360 | ||
1361 | /* indicate whether rxfh was set to default */ | |
1362 | if (rxfh.indir_size == 0) | |
1363 | dev->priv_flags &= ~IFF_RXFH_CONFIGURED; | |
1364 | else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) | |
1365 | dev->priv_flags |= IFF_RXFH_CONFIGURED; | |
a5b6ee29 BH |
1366 | |
1367 | out: | |
3de0b592 | 1368 | kfree(rss_config); |
a5b6ee29 BH |
1369 | return ret; |
1370 | } | |
1371 | ||
1da177e4 LT |
1372 | static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) |
1373 | { | |
1374 | struct ethtool_regs regs; | |
76fd8593 | 1375 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 LT |
1376 | void *regbuf; |
1377 | int reglen, ret; | |
1378 | ||
1379 | if (!ops->get_regs || !ops->get_regs_len) | |
1380 | return -EOPNOTSUPP; | |
1381 | ||
1382 | if (copy_from_user(®s, useraddr, sizeof(regs))) | |
1383 | return -EFAULT; | |
1384 | ||
1385 | reglen = ops->get_regs_len(dev); | |
1386 | if (regs.len > reglen) | |
1387 | regs.len = reglen; | |
1388 | ||
b7c7d01a | 1389 | regbuf = vzalloc(reglen); |
67ae7cf1 | 1390 | if (reglen && !regbuf) |
1da177e4 LT |
1391 | return -ENOMEM; |
1392 | ||
1393 | ops->get_regs(dev, ®s, regbuf); | |
1394 | ||
1395 | ret = -EFAULT; | |
1396 | if (copy_to_user(useraddr, ®s, sizeof(regs))) | |
1397 | goto out; | |
1398 | useraddr += offsetof(struct ethtool_regs, data); | |
67ae7cf1 | 1399 | if (regbuf && copy_to_user(useraddr, regbuf, regs.len)) |
1da177e4 LT |
1400 | goto out; |
1401 | ret = 0; | |
1402 | ||
1403 | out: | |
a77f5db3 | 1404 | vfree(regbuf); |
1da177e4 LT |
1405 | return ret; |
1406 | } | |
1407 | ||
d73d3a8c BH |
1408 | static int ethtool_reset(struct net_device *dev, char __user *useraddr) |
1409 | { | |
1410 | struct ethtool_value reset; | |
1411 | int ret; | |
1412 | ||
1413 | if (!dev->ethtool_ops->reset) | |
1414 | return -EOPNOTSUPP; | |
1415 | ||
1416 | if (copy_from_user(&reset, useraddr, sizeof(reset))) | |
1417 | return -EFAULT; | |
1418 | ||
1419 | ret = dev->ethtool_ops->reset(dev, &reset.data); | |
1420 | if (ret) | |
1421 | return ret; | |
1422 | ||
1423 | if (copy_to_user(useraddr, &reset, sizeof(reset))) | |
1424 | return -EFAULT; | |
1425 | return 0; | |
1426 | } | |
1427 | ||
1da177e4 LT |
1428 | static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) |
1429 | { | |
8e557421 | 1430 | struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL }; |
1da177e4 LT |
1431 | |
1432 | if (!dev->ethtool_ops->get_wol) | |
1433 | return -EOPNOTSUPP; | |
1434 | ||
1435 | dev->ethtool_ops->get_wol(dev, &wol); | |
1436 | ||
1437 | if (copy_to_user(useraddr, &wol, sizeof(wol))) | |
1438 | return -EFAULT; | |
1439 | return 0; | |
1440 | } | |
1441 | ||
1442 | static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) | |
1443 | { | |
1444 | struct ethtool_wolinfo wol; | |
1445 | ||
1446 | if (!dev->ethtool_ops->set_wol) | |
1447 | return -EOPNOTSUPP; | |
1448 | ||
1449 | if (copy_from_user(&wol, useraddr, sizeof(wol))) | |
1450 | return -EFAULT; | |
1451 | ||
1452 | return dev->ethtool_ops->set_wol(dev, &wol); | |
1453 | } | |
1454 | ||
80f12ecc YM |
1455 | static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) |
1456 | { | |
1457 | struct ethtool_eee edata; | |
1458 | int rc; | |
1459 | ||
1460 | if (!dev->ethtool_ops->get_eee) | |
1461 | return -EOPNOTSUPP; | |
1462 | ||
1463 | memset(&edata, 0, sizeof(struct ethtool_eee)); | |
1464 | edata.cmd = ETHTOOL_GEEE; | |
1465 | rc = dev->ethtool_ops->get_eee(dev, &edata); | |
1466 | ||
1467 | if (rc) | |
1468 | return rc; | |
1469 | ||
1470 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
1471 | return -EFAULT; | |
1472 | ||
1473 | return 0; | |
1474 | } | |
1475 | ||
1476 | static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) | |
1477 | { | |
1478 | struct ethtool_eee edata; | |
1479 | ||
1480 | if (!dev->ethtool_ops->set_eee) | |
1481 | return -EOPNOTSUPP; | |
1482 | ||
1483 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
1484 | return -EFAULT; | |
1485 | ||
1486 | return dev->ethtool_ops->set_eee(dev, &edata); | |
1487 | } | |
1488 | ||
1da177e4 LT |
1489 | static int ethtool_nway_reset(struct net_device *dev) |
1490 | { | |
1491 | if (!dev->ethtool_ops->nway_reset) | |
1492 | return -EOPNOTSUPP; | |
1493 | ||
1494 | return dev->ethtool_ops->nway_reset(dev); | |
1495 | } | |
1496 | ||
e596e6e4 BH |
1497 | static int ethtool_get_link(struct net_device *dev, char __user *useraddr) |
1498 | { | |
1499 | struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; | |
1500 | ||
1501 | if (!dev->ethtool_ops->get_link) | |
1502 | return -EOPNOTSUPP; | |
1503 | ||
1504 | edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev); | |
1505 | ||
1506 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
1507 | return -EFAULT; | |
1508 | return 0; | |
1509 | } | |
1510 | ||
081d094e BH |
1511 | static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, |
1512 | int (*getter)(struct net_device *, | |
1513 | struct ethtool_eeprom *, u8 *), | |
1514 | u32 total_len) | |
1da177e4 LT |
1515 | { |
1516 | struct ethtool_eeprom eeprom; | |
b131dd5d MSB |
1517 | void __user *userbuf = useraddr + sizeof(eeprom); |
1518 | u32 bytes_remaining; | |
1da177e4 | 1519 | u8 *data; |
b131dd5d | 1520 | int ret = 0; |
1da177e4 | 1521 | |
1da177e4 LT |
1522 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) |
1523 | return -EFAULT; | |
1524 | ||
1525 | /* Check for wrap and zero */ | |
1526 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
1527 | return -EINVAL; | |
1528 | ||
1529 | /* Check for exceeding total eeprom len */ | |
081d094e | 1530 | if (eeprom.offset + eeprom.len > total_len) |
1da177e4 LT |
1531 | return -EINVAL; |
1532 | ||
b131dd5d | 1533 | data = kmalloc(PAGE_SIZE, GFP_USER); |
1da177e4 LT |
1534 | if (!data) |
1535 | return -ENOMEM; | |
1536 | ||
b131dd5d MSB |
1537 | bytes_remaining = eeprom.len; |
1538 | while (bytes_remaining > 0) { | |
1539 | eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); | |
1540 | ||
081d094e | 1541 | ret = getter(dev, &eeprom, data); |
b131dd5d MSB |
1542 | if (ret) |
1543 | break; | |
1544 | if (copy_to_user(userbuf, data, eeprom.len)) { | |
1545 | ret = -EFAULT; | |
1546 | break; | |
1547 | } | |
1548 | userbuf += eeprom.len; | |
1549 | eeprom.offset += eeprom.len; | |
1550 | bytes_remaining -= eeprom.len; | |
1551 | } | |
1da177e4 | 1552 | |
c5835df9 MSB |
1553 | eeprom.len = userbuf - (useraddr + sizeof(eeprom)); |
1554 | eeprom.offset -= eeprom.len; | |
1555 | if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) | |
1556 | ret = -EFAULT; | |
1557 | ||
1da177e4 LT |
1558 | kfree(data); |
1559 | return ret; | |
1560 | } | |
1561 | ||
081d094e BH |
1562 | static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) |
1563 | { | |
1564 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
1565 | ||
e0fb6fb6 GR |
1566 | if (!ops->get_eeprom || !ops->get_eeprom_len || |
1567 | !ops->get_eeprom_len(dev)) | |
081d094e BH |
1568 | return -EOPNOTSUPP; |
1569 | ||
1570 | return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, | |
1571 | ops->get_eeprom_len(dev)); | |
1572 | } | |
1573 | ||
1da177e4 LT |
1574 | static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) |
1575 | { | |
1576 | struct ethtool_eeprom eeprom; | |
76fd8593 | 1577 | const struct ethtool_ops *ops = dev->ethtool_ops; |
b131dd5d MSB |
1578 | void __user *userbuf = useraddr + sizeof(eeprom); |
1579 | u32 bytes_remaining; | |
1da177e4 | 1580 | u8 *data; |
b131dd5d | 1581 | int ret = 0; |
1da177e4 | 1582 | |
e0fb6fb6 GR |
1583 | if (!ops->set_eeprom || !ops->get_eeprom_len || |
1584 | !ops->get_eeprom_len(dev)) | |
1da177e4 LT |
1585 | return -EOPNOTSUPP; |
1586 | ||
1587 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) | |
1588 | return -EFAULT; | |
1589 | ||
1590 | /* Check for wrap and zero */ | |
1591 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
1592 | return -EINVAL; | |
1593 | ||
1594 | /* Check for exceeding total eeprom len */ | |
1595 | if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) | |
1596 | return -EINVAL; | |
1597 | ||
b131dd5d | 1598 | data = kmalloc(PAGE_SIZE, GFP_USER); |
1da177e4 LT |
1599 | if (!data) |
1600 | return -ENOMEM; | |
1601 | ||
b131dd5d MSB |
1602 | bytes_remaining = eeprom.len; |
1603 | while (bytes_remaining > 0) { | |
1604 | eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); | |
1605 | ||
1606 | if (copy_from_user(data, userbuf, eeprom.len)) { | |
1607 | ret = -EFAULT; | |
1608 | break; | |
1609 | } | |
1610 | ret = ops->set_eeprom(dev, &eeprom, data); | |
1611 | if (ret) | |
1612 | break; | |
1613 | userbuf += eeprom.len; | |
1614 | eeprom.offset += eeprom.len; | |
1615 | bytes_remaining -= eeprom.len; | |
1616 | } | |
1da177e4 | 1617 | |
1da177e4 LT |
1618 | kfree(data); |
1619 | return ret; | |
1620 | } | |
1621 | ||
97f8aefb | 1622 | static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, |
1623 | void __user *useraddr) | |
1da177e4 | 1624 | { |
8e557421 | 1625 | struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; |
1da177e4 LT |
1626 | |
1627 | if (!dev->ethtool_ops->get_coalesce) | |
1628 | return -EOPNOTSUPP; | |
1629 | ||
1630 | dev->ethtool_ops->get_coalesce(dev, &coalesce); | |
1631 | ||
1632 | if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) | |
1633 | return -EFAULT; | |
1634 | return 0; | |
1635 | } | |
1636 | ||
97f8aefb | 1637 | static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, |
1638 | void __user *useraddr) | |
1da177e4 LT |
1639 | { |
1640 | struct ethtool_coalesce coalesce; | |
1641 | ||
fa04ae5c | 1642 | if (!dev->ethtool_ops->set_coalesce) |
1da177e4 LT |
1643 | return -EOPNOTSUPP; |
1644 | ||
1645 | if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) | |
1646 | return -EFAULT; | |
1647 | ||
1648 | return dev->ethtool_ops->set_coalesce(dev, &coalesce); | |
1649 | } | |
1650 | ||
1651 | static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) | |
1652 | { | |
8e557421 | 1653 | struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; |
1da177e4 LT |
1654 | |
1655 | if (!dev->ethtool_ops->get_ringparam) | |
1656 | return -EOPNOTSUPP; | |
1657 | ||
1658 | dev->ethtool_ops->get_ringparam(dev, &ringparam); | |
1659 | ||
1660 | if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) | |
1661 | return -EFAULT; | |
1662 | return 0; | |
1663 | } | |
1664 | ||
1665 | static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) | |
1666 | { | |
1667 | struct ethtool_ringparam ringparam; | |
1668 | ||
1669 | if (!dev->ethtool_ops->set_ringparam) | |
1670 | return -EOPNOTSUPP; | |
1671 | ||
1672 | if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) | |
1673 | return -EFAULT; | |
1674 | ||
1675 | return dev->ethtool_ops->set_ringparam(dev, &ringparam); | |
1676 | } | |
1677 | ||
8b5933c3 | 1678 | static noinline_for_stack int ethtool_get_channels(struct net_device *dev, |
1679 | void __user *useraddr) | |
1680 | { | |
1681 | struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; | |
1682 | ||
1683 | if (!dev->ethtool_ops->get_channels) | |
1684 | return -EOPNOTSUPP; | |
1685 | ||
1686 | dev->ethtool_ops->get_channels(dev, &channels); | |
1687 | ||
1688 | if (copy_to_user(useraddr, &channels, sizeof(channels))) | |
1689 | return -EFAULT; | |
1690 | return 0; | |
1691 | } | |
1692 | ||
1693 | static noinline_for_stack int ethtool_set_channels(struct net_device *dev, | |
1694 | void __user *useraddr) | |
1695 | { | |
8bf36862 | 1696 | struct ethtool_channels channels, max; |
d4ab4286 | 1697 | u32 max_rx_in_use = 0; |
8b5933c3 | 1698 | |
8bf36862 | 1699 | if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) |
8b5933c3 | 1700 | return -EOPNOTSUPP; |
1701 | ||
1702 | if (copy_from_user(&channels, useraddr, sizeof(channels))) | |
1703 | return -EFAULT; | |
1704 | ||
8bf36862 KJ |
1705 | dev->ethtool_ops->get_channels(dev, &max); |
1706 | ||
1707 | /* ensure new counts are within the maximums */ | |
1708 | if ((channels.rx_count > max.max_rx) || | |
1709 | (channels.tx_count > max.max_tx) || | |
1710 | (channels.combined_count > max.max_combined) || | |
1711 | (channels.other_count > max.max_other)) | |
1712 | return -EINVAL; | |
1713 | ||
d4ab4286 KJ |
1714 | /* ensure the new Rx count fits within the configured Rx flow |
1715 | * indirection table settings */ | |
1716 | if (netif_is_rxfh_configured(dev) && | |
1717 | !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) && | |
1718 | (channels.combined_count + channels.rx_count) <= max_rx_in_use) | |
1719 | return -EINVAL; | |
1720 | ||
8b5933c3 | 1721 | return dev->ethtool_ops->set_channels(dev, &channels); |
1722 | } | |
1723 | ||
1da177e4 LT |
1724 | static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) |
1725 | { | |
1726 | struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM }; | |
1727 | ||
1728 | if (!dev->ethtool_ops->get_pauseparam) | |
1729 | return -EOPNOTSUPP; | |
1730 | ||
1731 | dev->ethtool_ops->get_pauseparam(dev, &pauseparam); | |
1732 | ||
1733 | if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) | |
1734 | return -EFAULT; | |
1735 | return 0; | |
1736 | } | |
1737 | ||
1738 | static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) | |
1739 | { | |
1740 | struct ethtool_pauseparam pauseparam; | |
1741 | ||
e1b90c41 | 1742 | if (!dev->ethtool_ops->set_pauseparam) |
1da177e4 LT |
1743 | return -EOPNOTSUPP; |
1744 | ||
1745 | if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) | |
1746 | return -EFAULT; | |
1747 | ||
1748 | return dev->ethtool_ops->set_pauseparam(dev, &pauseparam); | |
1749 | } | |
1750 | ||
1da177e4 LT |
1751 | static int ethtool_self_test(struct net_device *dev, char __user *useraddr) |
1752 | { | |
1753 | struct ethtool_test test; | |
76fd8593 | 1754 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 1755 | u64 *data; |
ff03d49f | 1756 | int ret, test_len; |
1da177e4 | 1757 | |
a9828ec6 | 1758 | if (!ops->self_test || !ops->get_sset_count) |
1da177e4 LT |
1759 | return -EOPNOTSUPP; |
1760 | ||
a9828ec6 | 1761 | test_len = ops->get_sset_count(dev, ETH_SS_TEST); |
ff03d49f JG |
1762 | if (test_len < 0) |
1763 | return test_len; | |
1764 | WARN_ON(test_len == 0); | |
1765 | ||
1da177e4 LT |
1766 | if (copy_from_user(&test, useraddr, sizeof(test))) |
1767 | return -EFAULT; | |
1768 | ||
ff03d49f JG |
1769 | test.len = test_len; |
1770 | data = kmalloc(test_len * sizeof(u64), GFP_USER); | |
1da177e4 LT |
1771 | if (!data) |
1772 | return -ENOMEM; | |
1773 | ||
1774 | ops->self_test(dev, &test, data); | |
1775 | ||
1776 | ret = -EFAULT; | |
1777 | if (copy_to_user(useraddr, &test, sizeof(test))) | |
1778 | goto out; | |
1779 | useraddr += sizeof(test); | |
1780 | if (copy_to_user(useraddr, data, test.len * sizeof(u64))) | |
1781 | goto out; | |
1782 | ret = 0; | |
1783 | ||
1784 | out: | |
1785 | kfree(data); | |
1786 | return ret; | |
1787 | } | |
1788 | ||
1789 | static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) | |
1790 | { | |
1791 | struct ethtool_gstrings gstrings; | |
1da177e4 LT |
1792 | u8 *data; |
1793 | int ret; | |
1794 | ||
1da177e4 LT |
1795 | if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) |
1796 | return -EFAULT; | |
1797 | ||
340ae165 | 1798 | ret = __ethtool_get_sset_count(dev, gstrings.string_set); |
a9828ec6 BH |
1799 | if (ret < 0) |
1800 | return ret; | |
1801 | ||
1802 | gstrings.len = ret; | |
1da177e4 | 1803 | |
077cb37f | 1804 | data = kcalloc(gstrings.len, ETH_GSTRING_LEN, GFP_USER); |
1da177e4 LT |
1805 | if (!data) |
1806 | return -ENOMEM; | |
1807 | ||
340ae165 | 1808 | __ethtool_get_strings(dev, gstrings.string_set, data); |
1da177e4 LT |
1809 | |
1810 | ret = -EFAULT; | |
1811 | if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) | |
1812 | goto out; | |
1813 | useraddr += sizeof(gstrings); | |
1814 | if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN)) | |
1815 | goto out; | |
1816 | ret = 0; | |
1817 | ||
340ae165 | 1818 | out: |
1da177e4 LT |
1819 | kfree(data); |
1820 | return ret; | |
1821 | } | |
1822 | ||
1823 | static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) | |
1824 | { | |
1825 | struct ethtool_value id; | |
68f512f2 | 1826 | static bool busy; |
c03a14e8 | 1827 | const struct ethtool_ops *ops = dev->ethtool_ops; |
68f512f2 | 1828 | int rc; |
1da177e4 | 1829 | |
c03a14e8 | 1830 | if (!ops->set_phys_id) |
1da177e4 LT |
1831 | return -EOPNOTSUPP; |
1832 | ||
68f512f2 BH |
1833 | if (busy) |
1834 | return -EBUSY; | |
1835 | ||
1da177e4 LT |
1836 | if (copy_from_user(&id, useraddr, sizeof(id))) |
1837 | return -EFAULT; | |
1838 | ||
c03a14e8 | 1839 | rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); |
fce55922 | 1840 | if (rc < 0) |
68f512f2 BH |
1841 | return rc; |
1842 | ||
1843 | /* Drop the RTNL lock while waiting, but prevent reentry or | |
1844 | * removal of the device. | |
1845 | */ | |
1846 | busy = true; | |
1847 | dev_hold(dev); | |
1848 | rtnl_unlock(); | |
1849 | ||
1850 | if (rc == 0) { | |
1851 | /* Driver will handle this itself */ | |
1852 | schedule_timeout_interruptible( | |
143780c6 | 1853 | id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); |
68f512f2 | 1854 | } else { |
fce55922 AB |
1855 | /* Driver expects to be called at twice the frequency in rc */ |
1856 | int n = rc * 2, i, interval = HZ / n; | |
1857 | ||
1858 | /* Count down seconds */ | |
68f512f2 | 1859 | do { |
fce55922 AB |
1860 | /* Count down iterations per second */ |
1861 | i = n; | |
1862 | do { | |
1863 | rtnl_lock(); | |
c03a14e8 | 1864 | rc = ops->set_phys_id(dev, |
fce55922 AB |
1865 | (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); |
1866 | rtnl_unlock(); | |
1867 | if (rc) | |
1868 | break; | |
1869 | schedule_timeout_interruptible(interval); | |
1870 | } while (!signal_pending(current) && --i != 0); | |
68f512f2 BH |
1871 | } while (!signal_pending(current) && |
1872 | (id.data == 0 || --id.data != 0)); | |
1873 | } | |
1874 | ||
1875 | rtnl_lock(); | |
1876 | dev_put(dev); | |
1877 | busy = false; | |
1878 | ||
c03a14e8 | 1879 | (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); |
68f512f2 | 1880 | return rc; |
1da177e4 LT |
1881 | } |
1882 | ||
1883 | static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) | |
1884 | { | |
1885 | struct ethtool_stats stats; | |
76fd8593 | 1886 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 1887 | u64 *data; |
ff03d49f | 1888 | int ret, n_stats; |
1da177e4 | 1889 | |
a9828ec6 | 1890 | if (!ops->get_ethtool_stats || !ops->get_sset_count) |
1da177e4 LT |
1891 | return -EOPNOTSUPP; |
1892 | ||
a9828ec6 | 1893 | n_stats = ops->get_sset_count(dev, ETH_SS_STATS); |
ff03d49f JG |
1894 | if (n_stats < 0) |
1895 | return n_stats; | |
1896 | WARN_ON(n_stats == 0); | |
1897 | ||
1da177e4 LT |
1898 | if (copy_from_user(&stats, useraddr, sizeof(stats))) |
1899 | return -EFAULT; | |
1900 | ||
ff03d49f JG |
1901 | stats.n_stats = n_stats; |
1902 | data = kmalloc(n_stats * sizeof(u64), GFP_USER); | |
1da177e4 LT |
1903 | if (!data) |
1904 | return -ENOMEM; | |
1905 | ||
1906 | ops->get_ethtool_stats(dev, &stats, data); | |
1907 | ||
1908 | ret = -EFAULT; | |
1909 | if (copy_to_user(useraddr, &stats, sizeof(stats))) | |
1910 | goto out; | |
1911 | useraddr += sizeof(stats); | |
1912 | if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64))) | |
1913 | goto out; | |
1914 | ret = 0; | |
1915 | ||
1916 | out: | |
1917 | kfree(data); | |
1918 | return ret; | |
1919 | } | |
1920 | ||
f3a40945 AL |
1921 | static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) |
1922 | { | |
1923 | struct ethtool_stats stats; | |
1924 | struct phy_device *phydev = dev->phydev; | |
1925 | u64 *data; | |
1926 | int ret, n_stats; | |
1927 | ||
1928 | if (!phydev) | |
1929 | return -EOPNOTSUPP; | |
1930 | ||
1931 | n_stats = phy_get_sset_count(phydev); | |
1932 | ||
1933 | if (n_stats < 0) | |
1934 | return n_stats; | |
1935 | WARN_ON(n_stats == 0); | |
1936 | ||
1937 | if (copy_from_user(&stats, useraddr, sizeof(stats))) | |
1938 | return -EFAULT; | |
1939 | ||
1940 | stats.n_stats = n_stats; | |
1941 | data = kmalloc_array(n_stats, sizeof(u64), GFP_USER); | |
1942 | if (!data) | |
1943 | return -ENOMEM; | |
1944 | ||
1945 | mutex_lock(&phydev->lock); | |
1946 | phydev->drv->get_stats(phydev, &stats, data); | |
1947 | mutex_unlock(&phydev->lock); | |
1948 | ||
1949 | ret = -EFAULT; | |
1950 | if (copy_to_user(useraddr, &stats, sizeof(stats))) | |
1951 | goto out; | |
1952 | useraddr += sizeof(stats); | |
1953 | if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64))) | |
1954 | goto out; | |
1955 | ret = 0; | |
1956 | ||
1957 | out: | |
1958 | kfree(data); | |
1959 | return ret; | |
1960 | } | |
1961 | ||
0bf0519d | 1962 | static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) |
a6f9a705 JW |
1963 | { |
1964 | struct ethtool_perm_addr epaddr; | |
a6f9a705 | 1965 | |
313674af | 1966 | if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) |
a6f9a705 JW |
1967 | return -EFAULT; |
1968 | ||
313674af MW |
1969 | if (epaddr.size < dev->addr_len) |
1970 | return -ETOOSMALL; | |
1971 | epaddr.size = dev->addr_len; | |
a6f9a705 | 1972 | |
a6f9a705 | 1973 | if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) |
313674af | 1974 | return -EFAULT; |
a6f9a705 | 1975 | useraddr += sizeof(epaddr); |
313674af MW |
1976 | if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) |
1977 | return -EFAULT; | |
1978 | return 0; | |
a6f9a705 JW |
1979 | } |
1980 | ||
13c99b24 JG |
1981 | static int ethtool_get_value(struct net_device *dev, char __user *useraddr, |
1982 | u32 cmd, u32 (*actor)(struct net_device *)) | |
3ae7c0b2 | 1983 | { |
8e557421 | 1984 | struct ethtool_value edata = { .cmd = cmd }; |
3ae7c0b2 | 1985 | |
13c99b24 | 1986 | if (!actor) |
3ae7c0b2 JG |
1987 | return -EOPNOTSUPP; |
1988 | ||
13c99b24 | 1989 | edata.data = actor(dev); |
3ae7c0b2 JG |
1990 | |
1991 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
1992 | return -EFAULT; | |
1993 | return 0; | |
1994 | } | |
1995 | ||
13c99b24 JG |
1996 | static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, |
1997 | void (*actor)(struct net_device *, u32)) | |
3ae7c0b2 JG |
1998 | { |
1999 | struct ethtool_value edata; | |
2000 | ||
13c99b24 | 2001 | if (!actor) |
3ae7c0b2 JG |
2002 | return -EOPNOTSUPP; |
2003 | ||
2004 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
2005 | return -EFAULT; | |
2006 | ||
13c99b24 | 2007 | actor(dev, edata.data); |
339bf024 JG |
2008 | return 0; |
2009 | } | |
2010 | ||
13c99b24 JG |
2011 | static int ethtool_set_value(struct net_device *dev, char __user *useraddr, |
2012 | int (*actor)(struct net_device *, u32)) | |
339bf024 JG |
2013 | { |
2014 | struct ethtool_value edata; | |
2015 | ||
13c99b24 | 2016 | if (!actor) |
339bf024 JG |
2017 | return -EOPNOTSUPP; |
2018 | ||
2019 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
2020 | return -EFAULT; | |
2021 | ||
13c99b24 | 2022 | return actor(dev, edata.data); |
339bf024 JG |
2023 | } |
2024 | ||
97f8aefb | 2025 | static noinline_for_stack int ethtool_flash_device(struct net_device *dev, |
2026 | char __user *useraddr) | |
05c6a8d7 AK |
2027 | { |
2028 | struct ethtool_flash efl; | |
2029 | ||
2030 | if (copy_from_user(&efl, useraddr, sizeof(efl))) | |
2031 | return -EFAULT; | |
2032 | ||
2033 | if (!dev->ethtool_ops->flash_device) | |
2034 | return -EOPNOTSUPP; | |
2035 | ||
786f5281 BH |
2036 | efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; |
2037 | ||
05c6a8d7 AK |
2038 | return dev->ethtool_ops->flash_device(dev, &efl); |
2039 | } | |
2040 | ||
29dd54b7 AC |
2041 | static int ethtool_set_dump(struct net_device *dev, |
2042 | void __user *useraddr) | |
2043 | { | |
2044 | struct ethtool_dump dump; | |
2045 | ||
2046 | if (!dev->ethtool_ops->set_dump) | |
2047 | return -EOPNOTSUPP; | |
2048 | ||
2049 | if (copy_from_user(&dump, useraddr, sizeof(dump))) | |
2050 | return -EFAULT; | |
2051 | ||
2052 | return dev->ethtool_ops->set_dump(dev, &dump); | |
2053 | } | |
2054 | ||
2055 | static int ethtool_get_dump_flag(struct net_device *dev, | |
2056 | void __user *useraddr) | |
2057 | { | |
2058 | int ret; | |
2059 | struct ethtool_dump dump; | |
2060 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2061 | ||
c03a14e8 | 2062 | if (!ops->get_dump_flag) |
29dd54b7 AC |
2063 | return -EOPNOTSUPP; |
2064 | ||
2065 | if (copy_from_user(&dump, useraddr, sizeof(dump))) | |
2066 | return -EFAULT; | |
2067 | ||
2068 | ret = ops->get_dump_flag(dev, &dump); | |
2069 | if (ret) | |
2070 | return ret; | |
2071 | ||
2072 | if (copy_to_user(useraddr, &dump, sizeof(dump))) | |
2073 | return -EFAULT; | |
2074 | return 0; | |
2075 | } | |
2076 | ||
2077 | static int ethtool_get_dump_data(struct net_device *dev, | |
2078 | void __user *useraddr) | |
2079 | { | |
2080 | int ret; | |
2081 | __u32 len; | |
2082 | struct ethtool_dump dump, tmp; | |
2083 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2084 | void *data = NULL; | |
2085 | ||
c03a14e8 | 2086 | if (!ops->get_dump_data || !ops->get_dump_flag) |
29dd54b7 AC |
2087 | return -EOPNOTSUPP; |
2088 | ||
2089 | if (copy_from_user(&dump, useraddr, sizeof(dump))) | |
2090 | return -EFAULT; | |
2091 | ||
2092 | memset(&tmp, 0, sizeof(tmp)); | |
2093 | tmp.cmd = ETHTOOL_GET_DUMP_FLAG; | |
2094 | ret = ops->get_dump_flag(dev, &tmp); | |
2095 | if (ret) | |
2096 | return ret; | |
2097 | ||
c590b5e2 | 2098 | len = min(tmp.len, dump.len); |
29dd54b7 AC |
2099 | if (!len) |
2100 | return -EFAULT; | |
2101 | ||
c590b5e2 MS |
2102 | /* Don't ever let the driver think there's more space available |
2103 | * than it requested with .get_dump_flag(). | |
2104 | */ | |
2105 | dump.len = len; | |
2106 | ||
2107 | /* Always allocate enough space to hold the whole thing so that the | |
2108 | * driver does not need to check the length and bother with partial | |
2109 | * dumping. | |
2110 | */ | |
29dd54b7 AC |
2111 | data = vzalloc(tmp.len); |
2112 | if (!data) | |
2113 | return -ENOMEM; | |
2114 | ret = ops->get_dump_data(dev, &dump, data); | |
2115 | if (ret) | |
2116 | goto out; | |
2117 | ||
c590b5e2 MS |
2118 | /* There are two sane possibilities: |
2119 | * 1. The driver's .get_dump_data() does not touch dump.len. | |
2120 | * 2. Or it may set dump.len to how much it really writes, which | |
2121 | * should be tmp.len (or len if it can do a partial dump). | |
2122 | * In any case respond to userspace with the actual length of data | |
2123 | * it's receiving. | |
2124 | */ | |
2125 | WARN_ON(dump.len != len && dump.len != tmp.len); | |
2126 | dump.len = len; | |
2127 | ||
29dd54b7 AC |
2128 | if (copy_to_user(useraddr, &dump, sizeof(dump))) { |
2129 | ret = -EFAULT; | |
2130 | goto out; | |
2131 | } | |
2132 | useraddr += offsetof(struct ethtool_dump, data); | |
2133 | if (copy_to_user(useraddr, data, len)) | |
2134 | ret = -EFAULT; | |
2135 | out: | |
2136 | vfree(data); | |
2137 | return ret; | |
2138 | } | |
2139 | ||
c8f3a8c3 RC |
2140 | static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) |
2141 | { | |
2142 | int err = 0; | |
2143 | struct ethtool_ts_info info; | |
2144 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2145 | struct phy_device *phydev = dev->phydev; | |
2146 | ||
2147 | memset(&info, 0, sizeof(info)); | |
2148 | info.cmd = ETHTOOL_GET_TS_INFO; | |
2149 | ||
2150 | if (phydev && phydev->drv && phydev->drv->ts_info) { | |
c8f3a8c3 | 2151 | err = phydev->drv->ts_info(phydev, &info); |
c03a14e8 | 2152 | } else if (ops->get_ts_info) { |
c8f3a8c3 | 2153 | err = ops->get_ts_info(dev, &info); |
c8f3a8c3 RC |
2154 | } else { |
2155 | info.so_timestamping = | |
2156 | SOF_TIMESTAMPING_RX_SOFTWARE | | |
2157 | SOF_TIMESTAMPING_SOFTWARE; | |
2158 | info.phc_index = -1; | |
2159 | } | |
2160 | ||
2161 | if (err) | |
2162 | return err; | |
2163 | ||
2164 | if (copy_to_user(useraddr, &info, sizeof(info))) | |
2165 | err = -EFAULT; | |
2166 | ||
2167 | return err; | |
2168 | } | |
2169 | ||
2f438366 ES |
2170 | static int __ethtool_get_module_info(struct net_device *dev, |
2171 | struct ethtool_modinfo *modinfo) | |
2172 | { | |
2173 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2174 | struct phy_device *phydev = dev->phydev; | |
2175 | ||
2176 | if (phydev && phydev->drv && phydev->drv->module_info) | |
2177 | return phydev->drv->module_info(phydev, modinfo); | |
2178 | ||
2179 | if (ops->get_module_info) | |
2180 | return ops->get_module_info(dev, modinfo); | |
2181 | ||
2182 | return -EOPNOTSUPP; | |
2183 | } | |
2184 | ||
41c3cb6d SH |
2185 | static int ethtool_get_module_info(struct net_device *dev, |
2186 | void __user *useraddr) | |
2187 | { | |
2188 | int ret; | |
2189 | struct ethtool_modinfo modinfo; | |
41c3cb6d SH |
2190 | |
2191 | if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) | |
2192 | return -EFAULT; | |
2193 | ||
2f438366 | 2194 | ret = __ethtool_get_module_info(dev, &modinfo); |
41c3cb6d SH |
2195 | if (ret) |
2196 | return ret; | |
2197 | ||
2198 | if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) | |
2199 | return -EFAULT; | |
2200 | ||
2201 | return 0; | |
2202 | } | |
2203 | ||
2f438366 ES |
2204 | static int __ethtool_get_module_eeprom(struct net_device *dev, |
2205 | struct ethtool_eeprom *ee, u8 *data) | |
2206 | { | |
2207 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2208 | struct phy_device *phydev = dev->phydev; | |
2209 | ||
2210 | if (phydev && phydev->drv && phydev->drv->module_eeprom) | |
2211 | return phydev->drv->module_eeprom(phydev, ee, data); | |
2212 | ||
2213 | if (ops->get_module_eeprom) | |
2214 | return ops->get_module_eeprom(dev, ee, data); | |
2215 | ||
2216 | return -EOPNOTSUPP; | |
2217 | } | |
2218 | ||
41c3cb6d SH |
2219 | static int ethtool_get_module_eeprom(struct net_device *dev, |
2220 | void __user *useraddr) | |
2221 | { | |
2222 | int ret; | |
2223 | struct ethtool_modinfo modinfo; | |
41c3cb6d | 2224 | |
2f438366 | 2225 | ret = __ethtool_get_module_info(dev, &modinfo); |
41c3cb6d SH |
2226 | if (ret) |
2227 | return ret; | |
2228 | ||
2f438366 ES |
2229 | return ethtool_get_any_eeprom(dev, useraddr, |
2230 | __ethtool_get_module_eeprom, | |
41c3cb6d SH |
2231 | modinfo.eeprom_len); |
2232 | } | |
2233 | ||
f0db9b07 GV |
2234 | static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) |
2235 | { | |
2236 | switch (tuna->id) { | |
2237 | case ETHTOOL_RX_COPYBREAK: | |
1255a505 | 2238 | case ETHTOOL_TX_COPYBREAK: |
f0db9b07 GV |
2239 | if (tuna->len != sizeof(u32) || |
2240 | tuna->type_id != ETHTOOL_TUNABLE_U32) | |
2241 | return -EINVAL; | |
2242 | break; | |
2243 | default: | |
2244 | return -EINVAL; | |
2245 | } | |
2246 | ||
2247 | return 0; | |
2248 | } | |
2249 | ||
2250 | static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) | |
2251 | { | |
2252 | int ret; | |
2253 | struct ethtool_tunable tuna; | |
2254 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2255 | void *data; | |
2256 | ||
2257 | if (!ops->get_tunable) | |
2258 | return -EOPNOTSUPP; | |
2259 | if (copy_from_user(&tuna, useraddr, sizeof(tuna))) | |
2260 | return -EFAULT; | |
2261 | ret = ethtool_tunable_valid(&tuna); | |
2262 | if (ret) | |
2263 | return ret; | |
2264 | data = kmalloc(tuna.len, GFP_USER); | |
2265 | if (!data) | |
2266 | return -ENOMEM; | |
2267 | ret = ops->get_tunable(dev, &tuna, data); | |
2268 | if (ret) | |
2269 | goto out; | |
2270 | useraddr += sizeof(tuna); | |
2271 | ret = -EFAULT; | |
2272 | if (copy_to_user(useraddr, data, tuna.len)) | |
2273 | goto out; | |
2274 | ret = 0; | |
2275 | ||
2276 | out: | |
2277 | kfree(data); | |
2278 | return ret; | |
2279 | } | |
2280 | ||
2281 | static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) | |
2282 | { | |
2283 | int ret; | |
2284 | struct ethtool_tunable tuna; | |
2285 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2286 | void *data; | |
2287 | ||
2288 | if (!ops->set_tunable) | |
2289 | return -EOPNOTSUPP; | |
2290 | if (copy_from_user(&tuna, useraddr, sizeof(tuna))) | |
2291 | return -EFAULT; | |
2292 | ret = ethtool_tunable_valid(&tuna); | |
2293 | if (ret) | |
2294 | return ret; | |
2295 | data = kmalloc(tuna.len, GFP_USER); | |
2296 | if (!data) | |
2297 | return -ENOMEM; | |
2298 | useraddr += sizeof(tuna); | |
2299 | ret = -EFAULT; | |
2300 | if (copy_from_user(data, useraddr, tuna.len)) | |
2301 | goto out; | |
2302 | ret = ops->set_tunable(dev, &tuna, data); | |
2303 | ||
2304 | out: | |
2305 | kfree(data); | |
2306 | return ret; | |
2307 | } | |
2308 | ||
421797b1 KL |
2309 | static int ethtool_get_per_queue_coalesce(struct net_device *dev, |
2310 | void __user *useraddr, | |
2311 | struct ethtool_per_queue_op *per_queue_opt) | |
2312 | { | |
2313 | u32 bit; | |
2314 | int ret; | |
2315 | DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); | |
2316 | ||
2317 | if (!dev->ethtool_ops->get_per_queue_coalesce) | |
2318 | return -EOPNOTSUPP; | |
2319 | ||
2320 | useraddr += sizeof(*per_queue_opt); | |
2321 | ||
2322 | bitmap_from_u32array(queue_mask, | |
2323 | MAX_NUM_QUEUE, | |
2324 | per_queue_opt->queue_mask, | |
2325 | DIV_ROUND_UP(MAX_NUM_QUEUE, 32)); | |
2326 | ||
2327 | for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { | |
2328 | struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; | |
2329 | ||
2330 | ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); | |
2331 | if (ret != 0) | |
2332 | return ret; | |
2333 | if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) | |
2334 | return -EFAULT; | |
2335 | useraddr += sizeof(coalesce); | |
2336 | } | |
2337 | ||
2338 | return 0; | |
2339 | } | |
2340 | ||
f38d138a KL |
2341 | static int ethtool_set_per_queue_coalesce(struct net_device *dev, |
2342 | void __user *useraddr, | |
2343 | struct ethtool_per_queue_op *per_queue_opt) | |
2344 | { | |
2345 | u32 bit; | |
2346 | int i, ret = 0; | |
2347 | int n_queue; | |
2348 | struct ethtool_coalesce *backup = NULL, *tmp = NULL; | |
2349 | DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); | |
2350 | ||
2351 | if ((!dev->ethtool_ops->set_per_queue_coalesce) || | |
2352 | (!dev->ethtool_ops->get_per_queue_coalesce)) | |
2353 | return -EOPNOTSUPP; | |
2354 | ||
2355 | useraddr += sizeof(*per_queue_opt); | |
2356 | ||
2357 | bitmap_from_u32array(queue_mask, | |
2358 | MAX_NUM_QUEUE, | |
2359 | per_queue_opt->queue_mask, | |
2360 | DIV_ROUND_UP(MAX_NUM_QUEUE, 32)); | |
2361 | n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); | |
2362 | tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); | |
2363 | if (!backup) | |
2364 | return -ENOMEM; | |
2365 | ||
2366 | for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { | |
2367 | struct ethtool_coalesce coalesce; | |
2368 | ||
2369 | ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); | |
2370 | if (ret != 0) | |
2371 | goto roll_back; | |
2372 | ||
2373 | tmp++; | |
2374 | ||
2375 | if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { | |
2376 | ret = -EFAULT; | |
2377 | goto roll_back; | |
2378 | } | |
2379 | ||
2380 | ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); | |
2381 | if (ret != 0) | |
2382 | goto roll_back; | |
2383 | ||
2384 | useraddr += sizeof(coalesce); | |
2385 | } | |
2386 | ||
2387 | roll_back: | |
2388 | if (ret != 0) { | |
2389 | tmp = backup; | |
2390 | for_each_set_bit(i, queue_mask, bit) { | |
2391 | dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); | |
2392 | tmp++; | |
2393 | } | |
2394 | } | |
2395 | kfree(backup); | |
2396 | ||
2397 | return ret; | |
2398 | } | |
2399 | ||
ac2c7ad0 KL |
2400 | static int ethtool_set_per_queue(struct net_device *dev, void __user *useraddr) |
2401 | { | |
2402 | struct ethtool_per_queue_op per_queue_opt; | |
2403 | ||
2404 | if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) | |
2405 | return -EFAULT; | |
2406 | ||
2407 | switch (per_queue_opt.sub_command) { | |
421797b1 KL |
2408 | case ETHTOOL_GCOALESCE: |
2409 | return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); | |
f38d138a KL |
2410 | case ETHTOOL_SCOALESCE: |
2411 | return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); | |
ac2c7ad0 KL |
2412 | default: |
2413 | return -EOPNOTSUPP; | |
2414 | }; | |
2415 | } | |
2416 | ||
600fed5e | 2417 | /* The main entry point in this file. Called from net/core/dev_ioctl.c */ |
1da177e4 | 2418 | |
881d966b | 2419 | int dev_ethtool(struct net *net, struct ifreq *ifr) |
1da177e4 | 2420 | { |
881d966b | 2421 | struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name); |
1da177e4 | 2422 | void __user *useraddr = ifr->ifr_data; |
ac2c7ad0 | 2423 | u32 ethcmd, sub_cmd; |
1da177e4 | 2424 | int rc; |
b29d3145 | 2425 | netdev_features_t old_features; |
1da177e4 | 2426 | |
1da177e4 LT |
2427 | if (!dev || !netif_device_present(dev)) |
2428 | return -ENODEV; | |
2429 | ||
97f8aefb | 2430 | if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) |
1da177e4 LT |
2431 | return -EFAULT; |
2432 | ||
ac2c7ad0 KL |
2433 | if (ethcmd == ETHTOOL_PERQUEUE) { |
2434 | if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) | |
2435 | return -EFAULT; | |
2436 | } else { | |
2437 | sub_cmd = ethcmd; | |
2438 | } | |
75f3123c | 2439 | /* Allow some commands to be done by anyone */ |
ac2c7ad0 | 2440 | switch (sub_cmd) { |
0fdc100b | 2441 | case ETHTOOL_GSET: |
75f3123c | 2442 | case ETHTOOL_GDRVINFO: |
75f3123c | 2443 | case ETHTOOL_GMSGLVL: |
2da45db2 | 2444 | case ETHTOOL_GLINK: |
75f3123c SH |
2445 | case ETHTOOL_GCOALESCE: |
2446 | case ETHTOOL_GRINGPARAM: | |
2447 | case ETHTOOL_GPAUSEPARAM: | |
2448 | case ETHTOOL_GRXCSUM: | |
2449 | case ETHTOOL_GTXCSUM: | |
2450 | case ETHTOOL_GSG: | |
f80400a2 | 2451 | case ETHTOOL_GSSET_INFO: |
75f3123c | 2452 | case ETHTOOL_GSTRINGS: |
2da45db2 | 2453 | case ETHTOOL_GSTATS: |
f3a40945 | 2454 | case ETHTOOL_GPHYSTATS: |
75f3123c SH |
2455 | case ETHTOOL_GTSO: |
2456 | case ETHTOOL_GPERMADDR: | |
2457 | case ETHTOOL_GUFO: | |
2458 | case ETHTOOL_GGSO: | |
1cab819b | 2459 | case ETHTOOL_GGRO: |
339bf024 JG |
2460 | case ETHTOOL_GFLAGS: |
2461 | case ETHTOOL_GPFLAGS: | |
0853ad66 | 2462 | case ETHTOOL_GRXFH: |
59089d8d SB |
2463 | case ETHTOOL_GRXRINGS: |
2464 | case ETHTOOL_GRXCLSRLCNT: | |
2465 | case ETHTOOL_GRXCLSRULE: | |
2466 | case ETHTOOL_GRXCLSRLALL: | |
2da45db2 | 2467 | case ETHTOOL_GRXFHINDIR: |
3de0b592 | 2468 | case ETHTOOL_GRSSH: |
5455c699 | 2469 | case ETHTOOL_GFEATURES: |
2da45db2 | 2470 | case ETHTOOL_GCHANNELS: |
c8f3a8c3 | 2471 | case ETHTOOL_GET_TS_INFO: |
2da45db2 | 2472 | case ETHTOOL_GEEE: |
f0db9b07 | 2473 | case ETHTOOL_GTUNABLE: |
75f3123c SH |
2474 | break; |
2475 | default: | |
5e1fccc0 | 2476 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
75f3123c SH |
2477 | return -EPERM; |
2478 | } | |
2479 | ||
97f8aefb | 2480 | if (dev->ethtool_ops->begin) { |
2481 | rc = dev->ethtool_ops->begin(dev); | |
2482 | if (rc < 0) | |
1da177e4 | 2483 | return rc; |
97f8aefb | 2484 | } |
d8a33ac4 SH |
2485 | old_features = dev->features; |
2486 | ||
1da177e4 LT |
2487 | switch (ethcmd) { |
2488 | case ETHTOOL_GSET: | |
2489 | rc = ethtool_get_settings(dev, useraddr); | |
2490 | break; | |
2491 | case ETHTOOL_SSET: | |
2492 | rc = ethtool_set_settings(dev, useraddr); | |
2493 | break; | |
2494 | case ETHTOOL_GDRVINFO: | |
2495 | rc = ethtool_get_drvinfo(dev, useraddr); | |
1da177e4 LT |
2496 | break; |
2497 | case ETHTOOL_GREGS: | |
2498 | rc = ethtool_get_regs(dev, useraddr); | |
2499 | break; | |
2500 | case ETHTOOL_GWOL: | |
2501 | rc = ethtool_get_wol(dev, useraddr); | |
2502 | break; | |
2503 | case ETHTOOL_SWOL: | |
2504 | rc = ethtool_set_wol(dev, useraddr); | |
2505 | break; | |
2506 | case ETHTOOL_GMSGLVL: | |
13c99b24 JG |
2507 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
2508 | dev->ethtool_ops->get_msglevel); | |
1da177e4 LT |
2509 | break; |
2510 | case ETHTOOL_SMSGLVL: | |
13c99b24 JG |
2511 | rc = ethtool_set_value_void(dev, useraddr, |
2512 | dev->ethtool_ops->set_msglevel); | |
1da177e4 | 2513 | break; |
80f12ecc YM |
2514 | case ETHTOOL_GEEE: |
2515 | rc = ethtool_get_eee(dev, useraddr); | |
2516 | break; | |
2517 | case ETHTOOL_SEEE: | |
2518 | rc = ethtool_set_eee(dev, useraddr); | |
2519 | break; | |
1da177e4 LT |
2520 | case ETHTOOL_NWAY_RST: |
2521 | rc = ethtool_nway_reset(dev); | |
2522 | break; | |
2523 | case ETHTOOL_GLINK: | |
e596e6e4 | 2524 | rc = ethtool_get_link(dev, useraddr); |
1da177e4 LT |
2525 | break; |
2526 | case ETHTOOL_GEEPROM: | |
2527 | rc = ethtool_get_eeprom(dev, useraddr); | |
2528 | break; | |
2529 | case ETHTOOL_SEEPROM: | |
2530 | rc = ethtool_set_eeprom(dev, useraddr); | |
2531 | break; | |
2532 | case ETHTOOL_GCOALESCE: | |
2533 | rc = ethtool_get_coalesce(dev, useraddr); | |
2534 | break; | |
2535 | case ETHTOOL_SCOALESCE: | |
2536 | rc = ethtool_set_coalesce(dev, useraddr); | |
2537 | break; | |
2538 | case ETHTOOL_GRINGPARAM: | |
2539 | rc = ethtool_get_ringparam(dev, useraddr); | |
2540 | break; | |
2541 | case ETHTOOL_SRINGPARAM: | |
2542 | rc = ethtool_set_ringparam(dev, useraddr); | |
2543 | break; | |
2544 | case ETHTOOL_GPAUSEPARAM: | |
2545 | rc = ethtool_get_pauseparam(dev, useraddr); | |
2546 | break; | |
2547 | case ETHTOOL_SPAUSEPARAM: | |
2548 | rc = ethtool_set_pauseparam(dev, useraddr); | |
2549 | break; | |
1da177e4 LT |
2550 | case ETHTOOL_TEST: |
2551 | rc = ethtool_self_test(dev, useraddr); | |
2552 | break; | |
2553 | case ETHTOOL_GSTRINGS: | |
2554 | rc = ethtool_get_strings(dev, useraddr); | |
2555 | break; | |
2556 | case ETHTOOL_PHYS_ID: | |
2557 | rc = ethtool_phys_id(dev, useraddr); | |
2558 | break; | |
2559 | case ETHTOOL_GSTATS: | |
2560 | rc = ethtool_get_stats(dev, useraddr); | |
2561 | break; | |
a6f9a705 JW |
2562 | case ETHTOOL_GPERMADDR: |
2563 | rc = ethtool_get_perm_addr(dev, useraddr); | |
2564 | break; | |
3ae7c0b2 | 2565 | case ETHTOOL_GFLAGS: |
13c99b24 | 2566 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
bc5787c6 | 2567 | __ethtool_get_flags); |
3ae7c0b2 JG |
2568 | break; |
2569 | case ETHTOOL_SFLAGS: | |
da8ac86c | 2570 | rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); |
3ae7c0b2 | 2571 | break; |
339bf024 | 2572 | case ETHTOOL_GPFLAGS: |
13c99b24 JG |
2573 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
2574 | dev->ethtool_ops->get_priv_flags); | |
339bf024 JG |
2575 | break; |
2576 | case ETHTOOL_SPFLAGS: | |
13c99b24 JG |
2577 | rc = ethtool_set_value(dev, useraddr, |
2578 | dev->ethtool_ops->set_priv_flags); | |
339bf024 | 2579 | break; |
0853ad66 | 2580 | case ETHTOOL_GRXFH: |
59089d8d SB |
2581 | case ETHTOOL_GRXRINGS: |
2582 | case ETHTOOL_GRXCLSRLCNT: | |
2583 | case ETHTOOL_GRXCLSRULE: | |
2584 | case ETHTOOL_GRXCLSRLALL: | |
bf988435 | 2585 | rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); |
0853ad66 SB |
2586 | break; |
2587 | case ETHTOOL_SRXFH: | |
59089d8d SB |
2588 | case ETHTOOL_SRXCLSRLDEL: |
2589 | case ETHTOOL_SRXCLSRLINS: | |
bf988435 | 2590 | rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); |
0853ad66 | 2591 | break; |
05c6a8d7 AK |
2592 | case ETHTOOL_FLASHDEV: |
2593 | rc = ethtool_flash_device(dev, useraddr); | |
2594 | break; | |
d73d3a8c BH |
2595 | case ETHTOOL_RESET: |
2596 | rc = ethtool_reset(dev, useraddr); | |
2597 | break; | |
723b2f57 JG |
2598 | case ETHTOOL_GSSET_INFO: |
2599 | rc = ethtool_get_sset_info(dev, useraddr); | |
2600 | break; | |
a5b6ee29 BH |
2601 | case ETHTOOL_GRXFHINDIR: |
2602 | rc = ethtool_get_rxfh_indir(dev, useraddr); | |
2603 | break; | |
2604 | case ETHTOOL_SRXFHINDIR: | |
2605 | rc = ethtool_set_rxfh_indir(dev, useraddr); | |
2606 | break; | |
3de0b592 VD |
2607 | case ETHTOOL_GRSSH: |
2608 | rc = ethtool_get_rxfh(dev, useraddr); | |
2609 | break; | |
2610 | case ETHTOOL_SRSSH: | |
2611 | rc = ethtool_set_rxfh(dev, useraddr); | |
2612 | break; | |
5455c699 MM |
2613 | case ETHTOOL_GFEATURES: |
2614 | rc = ethtool_get_features(dev, useraddr); | |
2615 | break; | |
2616 | case ETHTOOL_SFEATURES: | |
2617 | rc = ethtool_set_features(dev, useraddr); | |
2618 | break; | |
0a417704 | 2619 | case ETHTOOL_GTXCSUM: |
e83d360d | 2620 | case ETHTOOL_GRXCSUM: |
0a417704 MM |
2621 | case ETHTOOL_GSG: |
2622 | case ETHTOOL_GTSO: | |
2623 | case ETHTOOL_GUFO: | |
2624 | case ETHTOOL_GGSO: | |
2625 | case ETHTOOL_GGRO: | |
2626 | rc = ethtool_get_one_feature(dev, useraddr, ethcmd); | |
2627 | break; | |
2628 | case ETHTOOL_STXCSUM: | |
e83d360d | 2629 | case ETHTOOL_SRXCSUM: |
0a417704 MM |
2630 | case ETHTOOL_SSG: |
2631 | case ETHTOOL_STSO: | |
2632 | case ETHTOOL_SUFO: | |
2633 | case ETHTOOL_SGSO: | |
2634 | case ETHTOOL_SGRO: | |
2635 | rc = ethtool_set_one_feature(dev, useraddr, ethcmd); | |
2636 | break; | |
8b5933c3 | 2637 | case ETHTOOL_GCHANNELS: |
2638 | rc = ethtool_get_channels(dev, useraddr); | |
2639 | break; | |
2640 | case ETHTOOL_SCHANNELS: | |
2641 | rc = ethtool_set_channels(dev, useraddr); | |
2642 | break; | |
29dd54b7 AC |
2643 | case ETHTOOL_SET_DUMP: |
2644 | rc = ethtool_set_dump(dev, useraddr); | |
2645 | break; | |
2646 | case ETHTOOL_GET_DUMP_FLAG: | |
2647 | rc = ethtool_get_dump_flag(dev, useraddr); | |
2648 | break; | |
2649 | case ETHTOOL_GET_DUMP_DATA: | |
2650 | rc = ethtool_get_dump_data(dev, useraddr); | |
2651 | break; | |
c8f3a8c3 RC |
2652 | case ETHTOOL_GET_TS_INFO: |
2653 | rc = ethtool_get_ts_info(dev, useraddr); | |
2654 | break; | |
41c3cb6d SH |
2655 | case ETHTOOL_GMODULEINFO: |
2656 | rc = ethtool_get_module_info(dev, useraddr); | |
2657 | break; | |
2658 | case ETHTOOL_GMODULEEEPROM: | |
2659 | rc = ethtool_get_module_eeprom(dev, useraddr); | |
2660 | break; | |
f0db9b07 GV |
2661 | case ETHTOOL_GTUNABLE: |
2662 | rc = ethtool_get_tunable(dev, useraddr); | |
2663 | break; | |
2664 | case ETHTOOL_STUNABLE: | |
2665 | rc = ethtool_set_tunable(dev, useraddr); | |
2666 | break; | |
f3a40945 AL |
2667 | case ETHTOOL_GPHYSTATS: |
2668 | rc = ethtool_get_phy_stats(dev, useraddr); | |
2669 | break; | |
ac2c7ad0 KL |
2670 | case ETHTOOL_PERQUEUE: |
2671 | rc = ethtool_set_per_queue(dev, useraddr); | |
2672 | break; | |
3f1ac7a7 DD |
2673 | case ETHTOOL_GLINKSETTINGS: |
2674 | rc = ethtool_get_link_ksettings(dev, useraddr); | |
2675 | break; | |
2676 | case ETHTOOL_SLINKSETTINGS: | |
2677 | rc = ethtool_set_link_ksettings(dev, useraddr); | |
2678 | break; | |
1da177e4 | 2679 | default: |
61a44b9c | 2680 | rc = -EOPNOTSUPP; |
1da177e4 | 2681 | } |
4ec93edb | 2682 | |
e71a4783 | 2683 | if (dev->ethtool_ops->complete) |
1da177e4 | 2684 | dev->ethtool_ops->complete(dev); |
d8a33ac4 SH |
2685 | |
2686 | if (old_features != dev->features) | |
2687 | netdev_features_change(dev); | |
2688 | ||
1da177e4 | 2689 | return rc; |
1da177e4 | 2690 | } |