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1da177e4 LT |
1 | /* |
2 | * net/core/ethtool.c - Ethtool ioctl handler | |
3 | * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx> | |
4 | * | |
5 | * This file is where we call all the ethtool_ops commands to get | |
61a44b9c | 6 | * the information ethtool needs. |
1da177e4 | 7 | * |
61a44b9c MW |
8 | * This program is free software; you can redistribute it and/or modify |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
1da177e4 LT |
12 | */ |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/types.h> | |
4fc268d2 | 16 | #include <linux/capability.h> |
1da177e4 LT |
17 | #include <linux/errno.h> |
18 | #include <linux/ethtool.h> | |
19 | #include <linux/netdevice.h> | |
c8f3a8c3 RC |
20 | #include <linux/net_tstamp.h> |
21 | #include <linux/phy.h> | |
d17792eb | 22 | #include <linux/bitops.h> |
97f8aefb | 23 | #include <linux/uaccess.h> |
73da16c2 | 24 | #include <linux/vmalloc.h> |
5a0e3ad6 | 25 | #include <linux/slab.h> |
68f512f2 | 26 | #include <linux/rtnetlink.h> |
174cd4b1 | 27 | #include <linux/sched/signal.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", | |
fb1f5f79 | 76 | [NETIF_F_GRO_HW_BIT] = "rx-gro-hw", |
9d921549 MM |
77 | [NETIF_F_LRO_BIT] = "rx-lro", |
78 | ||
79 | [NETIF_F_TSO_BIT] = "tx-tcp-segmentation", | |
9d921549 MM |
80 | [NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust", |
81 | [NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation", | |
cbc53e08 | 82 | [NETIF_F_TSO_MANGLEID_BIT] = "tx-tcp-mangleid-segmentation", |
9d921549 MM |
83 | [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation", |
84 | [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation", | |
68c33163 | 85 | [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation", |
518f213d | 86 | [NETIF_F_GSO_GRE_CSUM_BIT] = "tx-gre-csum-segmentation", |
7e13318d TH |
87 | [NETIF_F_GSO_IPXIP4_BIT] = "tx-ipxip4-segmentation", |
88 | [NETIF_F_GSO_IPXIP6_BIT] = "tx-ipxip6-segmentation", | |
73136267 | 89 | [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation", |
518f213d | 90 | [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation", |
802ab55a | 91 | [NETIF_F_GSO_PARTIAL_BIT] = "tx-gso-partial", |
90017acc | 92 | [NETIF_F_GSO_SCTP_BIT] = "tx-sctp-segmentation", |
c7ef8f0c | 93 | [NETIF_F_GSO_ESP_BIT] = "tx-esp-segmentation", |
9d921549 MM |
94 | |
95 | [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc", | |
53692b1d | 96 | [NETIF_F_SCTP_CRC_BIT] = "tx-checksum-sctp", |
9d921549 MM |
97 | [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu", |
98 | [NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter", | |
99 | [NETIF_F_RXHASH_BIT] = "rx-hashing", | |
100 | [NETIF_F_RXCSUM_BIT] = "rx-checksum", | |
101 | [NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy", | |
102 | [NETIF_F_LOOPBACK_BIT] = "loopback", | |
36eabda3 | 103 | [NETIF_F_RXFCS_BIT] = "rx-fcs", |
5e0c03c8 | 104 | [NETIF_F_RXALL_BIT] = "rx-all", |
a6cc0cfa | 105 | [NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload", |
1c78c64e | 106 | [NETIF_F_HW_TC_BIT] = "hw-tc-offload", |
c7ef8f0c SK |
107 | [NETIF_F_HW_ESP_BIT] = "esp-hw-offload", |
108 | [NETIF_F_HW_ESP_TX_CSUM_BIT] = "esp-tx-csum-hw-offload", | |
d764a122 | 109 | [NETIF_F_RX_UDP_TUNNEL_PORT_BIT] = "rx-udp_tunnel-port-offload", |
9d921549 MM |
110 | }; |
111 | ||
892311f6 EP |
112 | static const char |
113 | rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = { | |
114 | [ETH_RSS_HASH_TOP_BIT] = "toeplitz", | |
115 | [ETH_RSS_HASH_XOR_BIT] = "xor", | |
abb521e3 | 116 | [ETH_RSS_HASH_CRC32_BIT] = "crc32", |
892311f6 EP |
117 | }; |
118 | ||
a4244b0c HHZ |
119 | static const char |
120 | tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = { | |
121 | [ETHTOOL_ID_UNSPEC] = "Unspec", | |
122 | [ETHTOOL_RX_COPYBREAK] = "rx-copybreak", | |
123 | [ETHTOOL_TX_COPYBREAK] = "tx-copybreak", | |
124 | }; | |
125 | ||
968ad9da RL |
126 | static const char |
127 | phy_tunable_strings[__ETHTOOL_PHY_TUNABLE_COUNT][ETH_GSTRING_LEN] = { | |
128 | [ETHTOOL_ID_UNSPEC] = "Unspec", | |
65feddd5 | 129 | [ETHTOOL_PHY_DOWNSHIFT] = "phy-downshift", |
968ad9da RL |
130 | }; |
131 | ||
5455c699 MM |
132 | static int ethtool_get_features(struct net_device *dev, void __user *useraddr) |
133 | { | |
134 | struct ethtool_gfeatures cmd = { | |
135 | .cmd = ETHTOOL_GFEATURES, | |
136 | .size = ETHTOOL_DEV_FEATURE_WORDS, | |
137 | }; | |
475414f6 | 138 | struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; |
5455c699 MM |
139 | u32 __user *sizeaddr; |
140 | u32 copy_size; | |
475414f6 MM |
141 | int i; |
142 | ||
143 | /* in case feature bits run out again */ | |
09da71b1 | 144 | BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); |
475414f6 MM |
145 | |
146 | for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { | |
09da71b1 MM |
147 | features[i].available = (u32)(dev->hw_features >> (32 * i)); |
148 | features[i].requested = (u32)(dev->wanted_features >> (32 * i)); | |
149 | features[i].active = (u32)(dev->features >> (32 * i)); | |
150 | features[i].never_changed = | |
151 | (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); | |
475414f6 | 152 | } |
5455c699 MM |
153 | |
154 | sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); | |
155 | if (get_user(copy_size, sizeaddr)) | |
156 | return -EFAULT; | |
157 | ||
158 | if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) | |
159 | copy_size = ETHTOOL_DEV_FEATURE_WORDS; | |
160 | ||
161 | if (copy_to_user(useraddr, &cmd, sizeof(cmd))) | |
162 | return -EFAULT; | |
163 | useraddr += sizeof(cmd); | |
164 | if (copy_to_user(useraddr, features, copy_size * sizeof(*features))) | |
165 | return -EFAULT; | |
166 | ||
167 | return 0; | |
168 | } | |
169 | ||
170 | static int ethtool_set_features(struct net_device *dev, void __user *useraddr) | |
171 | { | |
172 | struct ethtool_sfeatures cmd; | |
173 | struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; | |
475414f6 MM |
174 | netdev_features_t wanted = 0, valid = 0; |
175 | int i, ret = 0; | |
5455c699 MM |
176 | |
177 | if (copy_from_user(&cmd, useraddr, sizeof(cmd))) | |
178 | return -EFAULT; | |
179 | useraddr += sizeof(cmd); | |
180 | ||
181 | if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) | |
182 | return -EINVAL; | |
183 | ||
184 | if (copy_from_user(features, useraddr, sizeof(features))) | |
185 | return -EFAULT; | |
186 | ||
475414f6 | 187 | for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { |
09da71b1 MM |
188 | valid |= (netdev_features_t)features[i].valid << (32 * i); |
189 | wanted |= (netdev_features_t)features[i].requested << (32 * i); | |
475414f6 MM |
190 | } |
191 | ||
192 | if (valid & ~NETIF_F_ETHTOOL_BITS) | |
5455c699 MM |
193 | return -EINVAL; |
194 | ||
475414f6 MM |
195 | if (valid & ~dev->hw_features) { |
196 | valid &= dev->hw_features; | |
5455c699 MM |
197 | ret |= ETHTOOL_F_UNSUPPORTED; |
198 | } | |
199 | ||
475414f6 MM |
200 | dev->wanted_features &= ~valid; |
201 | dev->wanted_features |= wanted & valid; | |
6cb6a27c | 202 | __netdev_update_features(dev); |
5455c699 | 203 | |
475414f6 | 204 | if ((dev->wanted_features ^ dev->features) & valid) |
5455c699 MM |
205 | ret |= ETHTOOL_F_WISH; |
206 | ||
207 | return ret; | |
208 | } | |
209 | ||
f3a40945 AL |
210 | static int phy_get_sset_count(struct phy_device *phydev) |
211 | { | |
212 | int ret; | |
213 | ||
214 | if (phydev->drv->get_sset_count && | |
215 | phydev->drv->get_strings && | |
216 | phydev->drv->get_stats) { | |
217 | mutex_lock(&phydev->lock); | |
218 | ret = phydev->drv->get_sset_count(phydev); | |
219 | mutex_unlock(&phydev->lock); | |
220 | ||
221 | return ret; | |
222 | } | |
223 | ||
224 | return -EOPNOTSUPP; | |
225 | } | |
226 | ||
340ae165 MM |
227 | static int __ethtool_get_sset_count(struct net_device *dev, int sset) |
228 | { | |
229 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
230 | ||
5455c699 MM |
231 | if (sset == ETH_SS_FEATURES) |
232 | return ARRAY_SIZE(netdev_features_strings); | |
233 | ||
892311f6 EP |
234 | if (sset == ETH_SS_RSS_HASH_FUNCS) |
235 | return ARRAY_SIZE(rss_hash_func_strings); | |
236 | ||
a4244b0c HHZ |
237 | if (sset == ETH_SS_TUNABLES) |
238 | return ARRAY_SIZE(tunable_strings); | |
239 | ||
968ad9da RL |
240 | if (sset == ETH_SS_PHY_TUNABLES) |
241 | return ARRAY_SIZE(phy_tunable_strings); | |
242 | ||
f3a40945 AL |
243 | if (sset == ETH_SS_PHY_STATS) { |
244 | if (dev->phydev) | |
245 | return phy_get_sset_count(dev->phydev); | |
246 | else | |
247 | return -EOPNOTSUPP; | |
248 | } | |
249 | ||
c03a14e8 | 250 | if (ops->get_sset_count && ops->get_strings) |
340ae165 MM |
251 | return ops->get_sset_count(dev, sset); |
252 | else | |
253 | return -EOPNOTSUPP; | |
254 | } | |
255 | ||
256 | static void __ethtool_get_strings(struct net_device *dev, | |
257 | u32 stringset, u8 *data) | |
258 | { | |
259 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
260 | ||
5455c699 MM |
261 | if (stringset == ETH_SS_FEATURES) |
262 | memcpy(data, netdev_features_strings, | |
263 | sizeof(netdev_features_strings)); | |
892311f6 EP |
264 | else if (stringset == ETH_SS_RSS_HASH_FUNCS) |
265 | memcpy(data, rss_hash_func_strings, | |
266 | sizeof(rss_hash_func_strings)); | |
a4244b0c HHZ |
267 | else if (stringset == ETH_SS_TUNABLES) |
268 | memcpy(data, tunable_strings, sizeof(tunable_strings)); | |
968ad9da RL |
269 | else if (stringset == ETH_SS_PHY_TUNABLES) |
270 | memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); | |
f3a40945 AL |
271 | else if (stringset == ETH_SS_PHY_STATS) { |
272 | struct phy_device *phydev = dev->phydev; | |
273 | ||
274 | if (phydev) { | |
275 | mutex_lock(&phydev->lock); | |
276 | phydev->drv->get_strings(phydev, data); | |
277 | mutex_unlock(&phydev->lock); | |
278 | } else { | |
279 | return; | |
280 | } | |
281 | } else | |
5455c699 MM |
282 | /* ops->get_strings is valid because checked earlier */ |
283 | ops->get_strings(dev, stringset, data); | |
340ae165 MM |
284 | } |
285 | ||
c8f44aff | 286 | static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) |
0a417704 MM |
287 | { |
288 | /* feature masks of legacy discrete ethtool ops */ | |
289 | ||
290 | switch (eth_cmd) { | |
291 | case ETHTOOL_GTXCSUM: | |
292 | case ETHTOOL_STXCSUM: | |
a188222b | 293 | return NETIF_F_CSUM_MASK | NETIF_F_SCTP_CRC; |
e83d360d MM |
294 | case ETHTOOL_GRXCSUM: |
295 | case ETHTOOL_SRXCSUM: | |
296 | return NETIF_F_RXCSUM; | |
0a417704 MM |
297 | case ETHTOOL_GSG: |
298 | case ETHTOOL_SSG: | |
299 | return NETIF_F_SG; | |
300 | case ETHTOOL_GTSO: | |
301 | case ETHTOOL_STSO: | |
302 | return NETIF_F_ALL_TSO; | |
0a417704 MM |
303 | case ETHTOOL_GGSO: |
304 | case ETHTOOL_SGSO: | |
305 | return NETIF_F_GSO; | |
306 | case ETHTOOL_GGRO: | |
307 | case ETHTOOL_SGRO: | |
308 | return NETIF_F_GRO; | |
309 | default: | |
310 | BUG(); | |
311 | } | |
312 | } | |
313 | ||
0a417704 MM |
314 | static int ethtool_get_one_feature(struct net_device *dev, |
315 | char __user *useraddr, u32 ethcmd) | |
316 | { | |
c8f44aff | 317 | netdev_features_t mask = ethtool_get_feature_mask(ethcmd); |
0a417704 MM |
318 | struct ethtool_value edata = { |
319 | .cmd = ethcmd, | |
86794881 | 320 | .data = !!(dev->features & mask), |
0a417704 | 321 | }; |
0a417704 | 322 | |
0a417704 MM |
323 | if (copy_to_user(useraddr, &edata, sizeof(edata))) |
324 | return -EFAULT; | |
325 | return 0; | |
326 | } | |
327 | ||
0a417704 MM |
328 | static int ethtool_set_one_feature(struct net_device *dev, |
329 | void __user *useraddr, u32 ethcmd) | |
330 | { | |
331 | struct ethtool_value edata; | |
c8f44aff | 332 | netdev_features_t mask; |
0a417704 MM |
333 | |
334 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
335 | return -EFAULT; | |
336 | ||
86794881 MM |
337 | mask = ethtool_get_feature_mask(ethcmd); |
338 | mask &= dev->hw_features; | |
bc5787c6 MM |
339 | if (!mask) |
340 | return -EOPNOTSUPP; | |
86794881 | 341 | |
bc5787c6 MM |
342 | if (edata.data) |
343 | dev->wanted_features |= mask; | |
344 | else | |
345 | dev->wanted_features &= ~mask; | |
86794881 | 346 | |
bc5787c6 | 347 | __netdev_update_features(dev); |
86794881 | 348 | |
bc5787c6 MM |
349 | return 0; |
350 | } | |
351 | ||
02b3a552 MM |
352 | #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ |
353 | ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) | |
f646968f PM |
354 | #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ |
355 | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ | |
356 | NETIF_F_RXHASH) | |
bc5787c6 MM |
357 | |
358 | static u32 __ethtool_get_flags(struct net_device *dev) | |
359 | { | |
02b3a552 MM |
360 | u32 flags = 0; |
361 | ||
8a73125c DF |
362 | if (dev->features & NETIF_F_LRO) |
363 | flags |= ETH_FLAG_LRO; | |
364 | if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) | |
365 | flags |= ETH_FLAG_RXVLAN; | |
366 | if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) | |
367 | flags |= ETH_FLAG_TXVLAN; | |
368 | if (dev->features & NETIF_F_NTUPLE) | |
369 | flags |= ETH_FLAG_NTUPLE; | |
370 | if (dev->features & NETIF_F_RXHASH) | |
371 | flags |= ETH_FLAG_RXHASH; | |
02b3a552 MM |
372 | |
373 | return flags; | |
0a417704 MM |
374 | } |
375 | ||
bc5787c6 | 376 | static int __ethtool_set_flags(struct net_device *dev, u32 data) |
da8ac86c | 377 | { |
c8f44aff | 378 | netdev_features_t features = 0, changed; |
da8ac86c | 379 | |
02b3a552 | 380 | if (data & ~ETH_ALL_FLAGS) |
da8ac86c MM |
381 | return -EINVAL; |
382 | ||
8a73125c DF |
383 | if (data & ETH_FLAG_LRO) |
384 | features |= NETIF_F_LRO; | |
385 | if (data & ETH_FLAG_RXVLAN) | |
386 | features |= NETIF_F_HW_VLAN_CTAG_RX; | |
387 | if (data & ETH_FLAG_TXVLAN) | |
388 | features |= NETIF_F_HW_VLAN_CTAG_TX; | |
389 | if (data & ETH_FLAG_NTUPLE) | |
390 | features |= NETIF_F_NTUPLE; | |
391 | if (data & ETH_FLAG_RXHASH) | |
392 | features |= NETIF_F_RXHASH; | |
02b3a552 | 393 | |
da8ac86c | 394 | /* allow changing only bits set in hw_features */ |
02b3a552 | 395 | changed = (features ^ dev->features) & ETH_ALL_FEATURES; |
da8ac86c MM |
396 | if (changed & ~dev->hw_features) |
397 | return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; | |
398 | ||
399 | dev->wanted_features = | |
02b3a552 | 400 | (dev->wanted_features & ~changed) | (features & changed); |
da8ac86c | 401 | |
6cb6a27c | 402 | __netdev_update_features(dev); |
da8ac86c MM |
403 | |
404 | return 0; | |
405 | } | |
406 | ||
5a6cd6de AB |
407 | /* Given two link masks, AND them together and save the result in dst. */ |
408 | void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, | |
409 | struct ethtool_link_ksettings *src) | |
410 | { | |
411 | unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); | |
412 | unsigned int idx = 0; | |
413 | ||
414 | for (; idx < size; idx++) { | |
415 | dst->link_modes.supported[idx] &= | |
416 | src->link_modes.supported[idx]; | |
417 | dst->link_modes.advertising[idx] &= | |
418 | src->link_modes.advertising[idx]; | |
419 | } | |
420 | } | |
421 | EXPORT_SYMBOL(ethtool_intersect_link_masks); | |
422 | ||
6d62b4d5 PR |
423 | void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, |
424 | u32 legacy_u32) | |
3f1ac7a7 DD |
425 | { |
426 | bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS); | |
427 | dst[0] = legacy_u32; | |
428 | } | |
6d62b4d5 | 429 | EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); |
3f1ac7a7 DD |
430 | |
431 | /* return false if src had higher bits set. lower bits always updated. */ | |
6d62b4d5 PR |
432 | bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, |
433 | const unsigned long *src) | |
3f1ac7a7 DD |
434 | { |
435 | bool retval = true; | |
436 | ||
437 | /* TODO: following test will soon always be true */ | |
438 | if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) { | |
439 | __ETHTOOL_DECLARE_LINK_MODE_MASK(ext); | |
440 | ||
441 | bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS); | |
442 | bitmap_fill(ext, 32); | |
443 | bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS); | |
444 | if (bitmap_intersects(ext, src, | |
445 | __ETHTOOL_LINK_MODE_MASK_NBITS)) { | |
446 | /* src mask goes beyond bit 31 */ | |
447 | retval = false; | |
448 | } | |
449 | } | |
450 | *legacy_u32 = src[0]; | |
451 | return retval; | |
452 | } | |
6d62b4d5 | 453 | EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); |
3f1ac7a7 DD |
454 | |
455 | /* return false if legacy contained non-0 deprecated fields | |
95491e3c | 456 | * maxtxpkt/maxrxpkt. rest of ksettings always updated |
3f1ac7a7 DD |
457 | */ |
458 | static bool | |
459 | convert_legacy_settings_to_link_ksettings( | |
460 | struct ethtool_link_ksettings *link_ksettings, | |
461 | const struct ethtool_cmd *legacy_settings) | |
462 | { | |
463 | bool retval = true; | |
464 | ||
465 | memset(link_ksettings, 0, sizeof(*link_ksettings)); | |
466 | ||
467 | /* This is used to tell users that driver is still using these | |
468 | * deprecated legacy fields, and they should not use | |
469 | * %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS | |
470 | */ | |
95491e3c | 471 | if (legacy_settings->maxtxpkt || |
3f1ac7a7 DD |
472 | legacy_settings->maxrxpkt) |
473 | retval = false; | |
474 | ||
6d62b4d5 | 475 | ethtool_convert_legacy_u32_to_link_mode( |
3f1ac7a7 DD |
476 | link_ksettings->link_modes.supported, |
477 | legacy_settings->supported); | |
6d62b4d5 | 478 | ethtool_convert_legacy_u32_to_link_mode( |
3f1ac7a7 DD |
479 | link_ksettings->link_modes.advertising, |
480 | legacy_settings->advertising); | |
6d62b4d5 | 481 | ethtool_convert_legacy_u32_to_link_mode( |
3f1ac7a7 DD |
482 | link_ksettings->link_modes.lp_advertising, |
483 | legacy_settings->lp_advertising); | |
484 | link_ksettings->base.speed | |
485 | = ethtool_cmd_speed(legacy_settings); | |
486 | link_ksettings->base.duplex | |
487 | = legacy_settings->duplex; | |
488 | link_ksettings->base.port | |
489 | = legacy_settings->port; | |
490 | link_ksettings->base.phy_address | |
491 | = legacy_settings->phy_address; | |
492 | link_ksettings->base.autoneg | |
493 | = legacy_settings->autoneg; | |
494 | link_ksettings->base.mdio_support | |
495 | = legacy_settings->mdio_support; | |
496 | link_ksettings->base.eth_tp_mdix | |
497 | = legacy_settings->eth_tp_mdix; | |
498 | link_ksettings->base.eth_tp_mdix_ctrl | |
499 | = legacy_settings->eth_tp_mdix_ctrl; | |
500 | return retval; | |
501 | } | |
502 | ||
503 | /* return false if ksettings link modes had higher bits | |
504 | * set. legacy_settings always updated (best effort) | |
505 | */ | |
506 | static bool | |
507 | convert_link_ksettings_to_legacy_settings( | |
508 | struct ethtool_cmd *legacy_settings, | |
509 | const struct ethtool_link_ksettings *link_ksettings) | |
510 | { | |
511 | bool retval = true; | |
512 | ||
513 | memset(legacy_settings, 0, sizeof(*legacy_settings)); | |
514 | /* this also clears the deprecated fields in legacy structure: | |
515 | * __u8 transceiver; | |
516 | * __u32 maxtxpkt; | |
517 | * __u32 maxrxpkt; | |
518 | */ | |
519 | ||
6d62b4d5 | 520 | retval &= ethtool_convert_link_mode_to_legacy_u32( |
3f1ac7a7 DD |
521 | &legacy_settings->supported, |
522 | link_ksettings->link_modes.supported); | |
6d62b4d5 | 523 | retval &= ethtool_convert_link_mode_to_legacy_u32( |
3f1ac7a7 DD |
524 | &legacy_settings->advertising, |
525 | link_ksettings->link_modes.advertising); | |
6d62b4d5 | 526 | retval &= ethtool_convert_link_mode_to_legacy_u32( |
3f1ac7a7 DD |
527 | &legacy_settings->lp_advertising, |
528 | link_ksettings->link_modes.lp_advertising); | |
529 | ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); | |
530 | legacy_settings->duplex | |
531 | = link_ksettings->base.duplex; | |
532 | legacy_settings->port | |
533 | = link_ksettings->base.port; | |
534 | legacy_settings->phy_address | |
535 | = link_ksettings->base.phy_address; | |
536 | legacy_settings->autoneg | |
537 | = link_ksettings->base.autoneg; | |
538 | legacy_settings->mdio_support | |
539 | = link_ksettings->base.mdio_support; | |
540 | legacy_settings->eth_tp_mdix | |
541 | = link_ksettings->base.eth_tp_mdix; | |
542 | legacy_settings->eth_tp_mdix_ctrl | |
543 | = link_ksettings->base.eth_tp_mdix_ctrl; | |
19cab887 FF |
544 | legacy_settings->transceiver |
545 | = link_ksettings->base.transceiver; | |
3f1ac7a7 DD |
546 | return retval; |
547 | } | |
548 | ||
549 | /* number of 32-bit words to store the user's link mode bitmaps */ | |
550 | #define __ETHTOOL_LINK_MODE_MASK_NU32 \ | |
551 | DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) | |
552 | ||
553 | /* layout of the struct passed from/to userland */ | |
554 | struct ethtool_link_usettings { | |
555 | struct ethtool_link_settings base; | |
556 | struct { | |
557 | __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; | |
558 | __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; | |
559 | __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; | |
560 | } link_modes; | |
561 | }; | |
562 | ||
563 | /* Internal kernel helper to query a device ethtool_link_settings. | |
564 | * | |
565 | * Backward compatibility note: for compatibility with legacy drivers | |
566 | * that implement only the ethtool_cmd API, this has to work with both | |
567 | * drivers implementing get_link_ksettings API and drivers | |
568 | * implementing get_settings API. When drivers implement get_settings | |
569 | * and report ethtool_cmd deprecated fields | |
570 | * (transceiver/maxrxpkt/maxtxpkt), these fields are silently ignored | |
571 | * because the resulting struct ethtool_link_settings does not report them. | |
572 | */ | |
573 | int __ethtool_get_link_ksettings(struct net_device *dev, | |
574 | struct ethtool_link_ksettings *link_ksettings) | |
575 | { | |
576 | int err; | |
577 | struct ethtool_cmd cmd; | |
578 | ||
579 | ASSERT_RTNL(); | |
580 | ||
581 | if (dev->ethtool_ops->get_link_ksettings) { | |
582 | memset(link_ksettings, 0, sizeof(*link_ksettings)); | |
583 | return dev->ethtool_ops->get_link_ksettings(dev, | |
584 | link_ksettings); | |
585 | } | |
586 | ||
587 | /* driver doesn't support %ethtool_link_ksettings API. revert to | |
588 | * legacy %ethtool_cmd API, unless it's not supported either. | |
589 | * TODO: remove when ethtool_ops::get_settings disappears internally | |
590 | */ | |
3237fc63 DD |
591 | if (!dev->ethtool_ops->get_settings) |
592 | return -EOPNOTSUPP; | |
593 | ||
594 | memset(&cmd, 0, sizeof(cmd)); | |
595 | cmd.cmd = ETHTOOL_GSET; | |
596 | err = dev->ethtool_ops->get_settings(dev, &cmd); | |
3f1ac7a7 DD |
597 | if (err < 0) |
598 | return err; | |
599 | ||
600 | /* we ignore deprecated fields transceiver/maxrxpkt/maxtxpkt | |
601 | */ | |
602 | convert_legacy_settings_to_link_ksettings(link_ksettings, &cmd); | |
603 | return err; | |
604 | } | |
605 | EXPORT_SYMBOL(__ethtool_get_link_ksettings); | |
606 | ||
607 | /* convert ethtool_link_usettings in user space to a kernel internal | |
608 | * ethtool_link_ksettings. return 0 on success, errno on error. | |
609 | */ | |
610 | static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, | |
611 | const void __user *from) | |
612 | { | |
613 | struct ethtool_link_usettings link_usettings; | |
614 | ||
615 | if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) | |
616 | return -EFAULT; | |
617 | ||
618 | memcpy(&to->base, &link_usettings.base, sizeof(to->base)); | |
3aa56885 YN |
619 | bitmap_from_arr32(to->link_modes.supported, |
620 | link_usettings.link_modes.supported, | |
621 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
622 | bitmap_from_arr32(to->link_modes.advertising, | |
623 | link_usettings.link_modes.advertising, | |
624 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
625 | bitmap_from_arr32(to->link_modes.lp_advertising, | |
626 | link_usettings.link_modes.lp_advertising, | |
627 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
3f1ac7a7 DD |
628 | |
629 | return 0; | |
630 | } | |
631 | ||
632 | /* convert a kernel internal ethtool_link_ksettings to | |
633 | * ethtool_link_usettings in user space. return 0 on success, errno on | |
634 | * error. | |
635 | */ | |
636 | static int | |
637 | store_link_ksettings_for_user(void __user *to, | |
638 | const struct ethtool_link_ksettings *from) | |
639 | { | |
640 | struct ethtool_link_usettings link_usettings; | |
641 | ||
642 | memcpy(&link_usettings.base, &from->base, sizeof(link_usettings)); | |
3aa56885 YN |
643 | bitmap_to_arr32(link_usettings.link_modes.supported, |
644 | from->link_modes.supported, | |
645 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
646 | bitmap_to_arr32(link_usettings.link_modes.advertising, | |
647 | from->link_modes.advertising, | |
648 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
649 | bitmap_to_arr32(link_usettings.link_modes.lp_advertising, | |
650 | from->link_modes.lp_advertising, | |
651 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
3f1ac7a7 DD |
652 | |
653 | if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) | |
654 | return -EFAULT; | |
655 | ||
656 | return 0; | |
657 | } | |
658 | ||
659 | /* Query device for its ethtool_link_settings. | |
660 | * | |
661 | * Backward compatibility note: this function must fail when driver | |
662 | * does not implement ethtool::get_link_ksettings, even if legacy | |
663 | * ethtool_ops::get_settings is implemented. This tells new versions | |
664 | * of ethtool that they should use the legacy API %ETHTOOL_GSET for | |
665 | * this driver, so that they can correctly access the ethtool_cmd | |
666 | * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver | |
667 | * implements ethtool_ops::get_settings anymore. | |
668 | */ | |
669 | static int ethtool_get_link_ksettings(struct net_device *dev, | |
670 | void __user *useraddr) | |
671 | { | |
672 | int err = 0; | |
673 | struct ethtool_link_ksettings link_ksettings; | |
674 | ||
675 | ASSERT_RTNL(); | |
676 | ||
677 | if (!dev->ethtool_ops->get_link_ksettings) | |
678 | return -EOPNOTSUPP; | |
679 | ||
680 | /* handle bitmap nbits handshake */ | |
681 | if (copy_from_user(&link_ksettings.base, useraddr, | |
682 | sizeof(link_ksettings.base))) | |
683 | return -EFAULT; | |
684 | ||
685 | if (__ETHTOOL_LINK_MODE_MASK_NU32 | |
686 | != link_ksettings.base.link_mode_masks_nwords) { | |
687 | /* wrong link mode nbits requested */ | |
688 | memset(&link_ksettings, 0, sizeof(link_ksettings)); | |
793cf87d | 689 | link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; |
3f1ac7a7 DD |
690 | /* send back number of words required as negative val */ |
691 | compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, | |
692 | "need too many bits for link modes!"); | |
693 | link_ksettings.base.link_mode_masks_nwords | |
694 | = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); | |
695 | ||
696 | /* copy the base fields back to user, not the link | |
697 | * mode bitmaps | |
698 | */ | |
699 | if (copy_to_user(useraddr, &link_ksettings.base, | |
700 | sizeof(link_ksettings.base))) | |
701 | return -EFAULT; | |
702 | ||
703 | return 0; | |
704 | } | |
705 | ||
706 | /* handshake successful: user/kernel agree on | |
707 | * link_mode_masks_nwords | |
708 | */ | |
709 | ||
710 | memset(&link_ksettings, 0, sizeof(link_ksettings)); | |
711 | err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); | |
712 | if (err < 0) | |
713 | return err; | |
714 | ||
715 | /* make sure we tell the right values to user */ | |
716 | link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; | |
717 | link_ksettings.base.link_mode_masks_nwords | |
718 | = __ETHTOOL_LINK_MODE_MASK_NU32; | |
719 | ||
720 | return store_link_ksettings_for_user(useraddr, &link_ksettings); | |
721 | } | |
722 | ||
723 | /* Update device ethtool_link_settings. | |
724 | * | |
725 | * Backward compatibility note: this function must fail when driver | |
726 | * does not implement ethtool::set_link_ksettings, even if legacy | |
727 | * ethtool_ops::set_settings is implemented. This tells new versions | |
728 | * of ethtool that they should use the legacy API %ETHTOOL_SSET for | |
729 | * this driver, so that they can correctly update the ethtool_cmd | |
730 | * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver | |
731 | * implements ethtool_ops::get_settings anymore. | |
732 | */ | |
733 | static int ethtool_set_link_ksettings(struct net_device *dev, | |
734 | void __user *useraddr) | |
735 | { | |
736 | int err; | |
737 | struct ethtool_link_ksettings link_ksettings; | |
738 | ||
739 | ASSERT_RTNL(); | |
740 | ||
741 | if (!dev->ethtool_ops->set_link_ksettings) | |
742 | return -EOPNOTSUPP; | |
743 | ||
744 | /* make sure nbits field has expected value */ | |
745 | if (copy_from_user(&link_ksettings.base, useraddr, | |
746 | sizeof(link_ksettings.base))) | |
747 | return -EFAULT; | |
748 | ||
749 | if (__ETHTOOL_LINK_MODE_MASK_NU32 | |
750 | != link_ksettings.base.link_mode_masks_nwords) | |
751 | return -EINVAL; | |
752 | ||
753 | /* copy the whole structure, now that we know it has expected | |
754 | * format | |
755 | */ | |
756 | err = load_link_ksettings_from_user(&link_ksettings, useraddr); | |
757 | if (err) | |
758 | return err; | |
759 | ||
760 | /* re-check nwords field, just in case */ | |
761 | if (__ETHTOOL_LINK_MODE_MASK_NU32 | |
762 | != link_ksettings.base.link_mode_masks_nwords) | |
763 | return -EINVAL; | |
764 | ||
765 | return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); | |
766 | } | |
767 | ||
3f1ac7a7 DD |
768 | /* Query device for its ethtool_cmd settings. |
769 | * | |
770 | * Backward compatibility note: for compatibility with legacy ethtool, | |
771 | * this has to work with both drivers implementing get_link_ksettings | |
772 | * API and drivers implementing get_settings API. When drivers | |
773 | * implement get_link_ksettings and report higher link mode bits, a | |
774 | * kernel warning is logged once (with name of 1st driver/device) to | |
775 | * recommend user to upgrade ethtool, but the command is successful | |
776 | * (only the lower link mode bits reported back to user). | |
777 | */ | |
4bc71cb9 JP |
778 | static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) |
779 | { | |
4bc71cb9 JP |
780 | struct ethtool_cmd cmd; |
781 | ||
3f1ac7a7 DD |
782 | ASSERT_RTNL(); |
783 | ||
784 | if (dev->ethtool_ops->get_link_ksettings) { | |
785 | /* First, use link_ksettings API if it is supported */ | |
786 | int err; | |
787 | struct ethtool_link_ksettings link_ksettings; | |
788 | ||
789 | memset(&link_ksettings, 0, sizeof(link_ksettings)); | |
790 | err = dev->ethtool_ops->get_link_ksettings(dev, | |
791 | &link_ksettings); | |
792 | if (err < 0) | |
793 | return err; | |
71891e2d SH |
794 | convert_link_ksettings_to_legacy_settings(&cmd, |
795 | &link_ksettings); | |
3f1ac7a7 DD |
796 | |
797 | /* send a sensible cmd tag back to user */ | |
798 | cmd.cmd = ETHTOOL_GSET; | |
799 | } else { | |
3f1ac7a7 DD |
800 | /* driver doesn't support %ethtool_link_ksettings |
801 | * API. revert to legacy %ethtool_cmd API, unless it's | |
802 | * not supported either. | |
803 | */ | |
3237fc63 DD |
804 | int err; |
805 | ||
806 | if (!dev->ethtool_ops->get_settings) | |
807 | return -EOPNOTSUPP; | |
808 | ||
809 | memset(&cmd, 0, sizeof(cmd)); | |
810 | cmd.cmd = ETHTOOL_GSET; | |
811 | err = dev->ethtool_ops->get_settings(dev, &cmd); | |
3f1ac7a7 DD |
812 | if (err < 0) |
813 | return err; | |
814 | } | |
1da177e4 LT |
815 | |
816 | if (copy_to_user(useraddr, &cmd, sizeof(cmd))) | |
817 | return -EFAULT; | |
3f1ac7a7 | 818 | |
1da177e4 LT |
819 | return 0; |
820 | } | |
821 | ||
3f1ac7a7 DD |
822 | /* Update device link settings with given ethtool_cmd. |
823 | * | |
824 | * Backward compatibility note: for compatibility with legacy ethtool, | |
825 | * this has to work with both drivers implementing set_link_ksettings | |
826 | * API and drivers implementing set_settings API. When drivers | |
827 | * implement set_link_ksettings and user's request updates deprecated | |
828 | * ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel | |
829 | * warning is logged once (with name of 1st driver/device) to | |
830 | * recommend user to upgrade ethtool, and the request is rejected. | |
831 | */ | |
1da177e4 LT |
832 | static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) |
833 | { | |
834 | struct ethtool_cmd cmd; | |
835 | ||
3f1ac7a7 | 836 | ASSERT_RTNL(); |
1da177e4 LT |
837 | |
838 | if (copy_from_user(&cmd, useraddr, sizeof(cmd))) | |
839 | return -EFAULT; | |
840 | ||
3f1ac7a7 DD |
841 | /* first, try new %ethtool_link_ksettings API. */ |
842 | if (dev->ethtool_ops->set_link_ksettings) { | |
843 | struct ethtool_link_ksettings link_ksettings; | |
844 | ||
845 | if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, | |
846 | &cmd)) | |
847 | return -EINVAL; | |
848 | ||
849 | link_ksettings.base.cmd = ETHTOOL_SLINKSETTINGS; | |
850 | link_ksettings.base.link_mode_masks_nwords | |
851 | = __ETHTOOL_LINK_MODE_MASK_NU32; | |
852 | return dev->ethtool_ops->set_link_ksettings(dev, | |
853 | &link_ksettings); | |
854 | } | |
855 | ||
856 | /* legacy %ethtool_cmd API */ | |
857 | ||
858 | /* TODO: return -EOPNOTSUPP when ethtool_ops::get_settings | |
859 | * disappears internally | |
860 | */ | |
861 | ||
862 | if (!dev->ethtool_ops->set_settings) | |
863 | return -EOPNOTSUPP; | |
864 | ||
1da177e4 LT |
865 | return dev->ethtool_ops->set_settings(dev, &cmd); |
866 | } | |
867 | ||
97f8aefb | 868 | static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev, |
869 | void __user *useraddr) | |
1da177e4 LT |
870 | { |
871 | struct ethtool_drvinfo info; | |
76fd8593 | 872 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 873 | |
1da177e4 LT |
874 | memset(&info, 0, sizeof(info)); |
875 | info.cmd = ETHTOOL_GDRVINFO; | |
c03a14e8 | 876 | if (ops->get_drvinfo) { |
01414802 BH |
877 | ops->get_drvinfo(dev, &info); |
878 | } else if (dev->dev.parent && dev->dev.parent->driver) { | |
879 | strlcpy(info.bus_info, dev_name(dev->dev.parent), | |
880 | sizeof(info.bus_info)); | |
881 | strlcpy(info.driver, dev->dev.parent->driver->name, | |
882 | sizeof(info.driver)); | |
883 | } else { | |
884 | return -EOPNOTSUPP; | |
885 | } | |
1da177e4 | 886 | |
723b2f57 JG |
887 | /* |
888 | * this method of obtaining string set info is deprecated; | |
d17792eb | 889 | * Use ETHTOOL_GSSET_INFO instead. |
723b2f57 | 890 | */ |
c03a14e8 | 891 | if (ops->get_sset_count) { |
ff03d49f JG |
892 | int rc; |
893 | ||
894 | rc = ops->get_sset_count(dev, ETH_SS_TEST); | |
895 | if (rc >= 0) | |
896 | info.testinfo_len = rc; | |
897 | rc = ops->get_sset_count(dev, ETH_SS_STATS); | |
898 | if (rc >= 0) | |
899 | info.n_stats = rc; | |
339bf024 JG |
900 | rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); |
901 | if (rc >= 0) | |
902 | info.n_priv_flags = rc; | |
ff03d49f | 903 | } |
c03a14e8 | 904 | if (ops->get_regs_len) |
1da177e4 | 905 | info.regdump_len = ops->get_regs_len(dev); |
c03a14e8 | 906 | if (ops->get_eeprom_len) |
1da177e4 LT |
907 | info.eedump_len = ops->get_eeprom_len(dev); |
908 | ||
909 | if (copy_to_user(useraddr, &info, sizeof(info))) | |
910 | return -EFAULT; | |
911 | return 0; | |
912 | } | |
913 | ||
f5c445ed | 914 | static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, |
97f8aefb | 915 | void __user *useraddr) |
723b2f57 JG |
916 | { |
917 | struct ethtool_sset_info info; | |
723b2f57 JG |
918 | u64 sset_mask; |
919 | int i, idx = 0, n_bits = 0, ret, rc; | |
920 | u32 *info_buf = NULL; | |
921 | ||
723b2f57 JG |
922 | if (copy_from_user(&info, useraddr, sizeof(info))) |
923 | return -EFAULT; | |
924 | ||
925 | /* store copy of mask, because we zero struct later on */ | |
926 | sset_mask = info.sset_mask; | |
927 | if (!sset_mask) | |
928 | return 0; | |
929 | ||
930 | /* calculate size of return buffer */ | |
d17792eb | 931 | n_bits = hweight64(sset_mask); |
723b2f57 JG |
932 | |
933 | memset(&info, 0, sizeof(info)); | |
934 | info.cmd = ETHTOOL_GSSET_INFO; | |
935 | ||
936 | info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER); | |
937 | if (!info_buf) | |
938 | return -ENOMEM; | |
939 | ||
940 | /* | |
941 | * fill return buffer based on input bitmask and successful | |
942 | * get_sset_count return | |
943 | */ | |
944 | for (i = 0; i < 64; i++) { | |
945 | if (!(sset_mask & (1ULL << i))) | |
946 | continue; | |
947 | ||
340ae165 | 948 | rc = __ethtool_get_sset_count(dev, i); |
723b2f57 JG |
949 | if (rc >= 0) { |
950 | info.sset_mask |= (1ULL << i); | |
951 | info_buf[idx++] = rc; | |
952 | } | |
953 | } | |
954 | ||
955 | ret = -EFAULT; | |
956 | if (copy_to_user(useraddr, &info, sizeof(info))) | |
957 | goto out; | |
958 | ||
959 | useraddr += offsetof(struct ethtool_sset_info, data); | |
960 | if (copy_to_user(useraddr, info_buf, idx * sizeof(u32))) | |
961 | goto out; | |
962 | ||
963 | ret = 0; | |
964 | ||
965 | out: | |
966 | kfree(info_buf); | |
967 | return ret; | |
968 | } | |
969 | ||
97f8aefb | 970 | static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, |
bf988435 | 971 | u32 cmd, void __user *useraddr) |
0853ad66 | 972 | { |
bf988435 BH |
973 | struct ethtool_rxnfc info; |
974 | size_t info_size = sizeof(info); | |
55664f32 | 975 | int rc; |
0853ad66 | 976 | |
59089d8d | 977 | if (!dev->ethtool_ops->set_rxnfc) |
0853ad66 SB |
978 | return -EOPNOTSUPP; |
979 | ||
bf988435 BH |
980 | /* struct ethtool_rxnfc was originally defined for |
981 | * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data | |
982 | * members. User-space might still be using that | |
983 | * definition. */ | |
984 | if (cmd == ETHTOOL_SRXFH) | |
985 | info_size = (offsetof(struct ethtool_rxnfc, data) + | |
986 | sizeof(info.data)); | |
987 | ||
988 | if (copy_from_user(&info, useraddr, info_size)) | |
0853ad66 SB |
989 | return -EFAULT; |
990 | ||
55664f32 BH |
991 | rc = dev->ethtool_ops->set_rxnfc(dev, &info); |
992 | if (rc) | |
993 | return rc; | |
994 | ||
995 | if (cmd == ETHTOOL_SRXCLSRLINS && | |
996 | copy_to_user(useraddr, &info, info_size)) | |
997 | return -EFAULT; | |
998 | ||
999 | return 0; | |
0853ad66 SB |
1000 | } |
1001 | ||
97f8aefb | 1002 | static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, |
bf988435 | 1003 | u32 cmd, void __user *useraddr) |
0853ad66 SB |
1004 | { |
1005 | struct ethtool_rxnfc info; | |
bf988435 | 1006 | size_t info_size = sizeof(info); |
59089d8d SB |
1007 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1008 | int ret; | |
1009 | void *rule_buf = NULL; | |
0853ad66 | 1010 | |
59089d8d | 1011 | if (!ops->get_rxnfc) |
0853ad66 SB |
1012 | return -EOPNOTSUPP; |
1013 | ||
bf988435 BH |
1014 | /* struct ethtool_rxnfc was originally defined for |
1015 | * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data | |
1016 | * members. User-space might still be using that | |
1017 | * definition. */ | |
1018 | if (cmd == ETHTOOL_GRXFH) | |
1019 | info_size = (offsetof(struct ethtool_rxnfc, data) + | |
1020 | sizeof(info.data)); | |
1021 | ||
1022 | if (copy_from_user(&info, useraddr, info_size)) | |
0853ad66 SB |
1023 | return -EFAULT; |
1024 | ||
59089d8d SB |
1025 | if (info.cmd == ETHTOOL_GRXCLSRLALL) { |
1026 | if (info.rule_cnt > 0) { | |
db048b69 | 1027 | if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) |
ae6df5f9 | 1028 | rule_buf = kzalloc(info.rule_cnt * sizeof(u32), |
db048b69 | 1029 | GFP_USER); |
59089d8d SB |
1030 | if (!rule_buf) |
1031 | return -ENOMEM; | |
1032 | } | |
1033 | } | |
0853ad66 | 1034 | |
59089d8d SB |
1035 | ret = ops->get_rxnfc(dev, &info, rule_buf); |
1036 | if (ret < 0) | |
1037 | goto err_out; | |
1038 | ||
1039 | ret = -EFAULT; | |
bf988435 | 1040 | if (copy_to_user(useraddr, &info, info_size)) |
59089d8d SB |
1041 | goto err_out; |
1042 | ||
1043 | if (rule_buf) { | |
1044 | useraddr += offsetof(struct ethtool_rxnfc, rule_locs); | |
1045 | if (copy_to_user(useraddr, rule_buf, | |
1046 | info.rule_cnt * sizeof(u32))) | |
1047 | goto err_out; | |
1048 | } | |
1049 | ret = 0; | |
1050 | ||
1051 | err_out: | |
c9caceca | 1052 | kfree(rule_buf); |
59089d8d SB |
1053 | |
1054 | return ret; | |
0853ad66 SB |
1055 | } |
1056 | ||
3de0b592 VD |
1057 | static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, |
1058 | struct ethtool_rxnfc *rx_rings, | |
1059 | u32 size) | |
1060 | { | |
fb95cd8d | 1061 | int i; |
3de0b592 VD |
1062 | |
1063 | if (copy_from_user(indir, useraddr, size * sizeof(indir[0]))) | |
fb95cd8d | 1064 | return -EFAULT; |
3de0b592 VD |
1065 | |
1066 | /* Validate ring indices */ | |
fb95cd8d BH |
1067 | for (i = 0; i < size; i++) |
1068 | if (indir[i] >= rx_rings->data) | |
1069 | return -EINVAL; | |
1070 | ||
1071 | return 0; | |
3de0b592 VD |
1072 | } |
1073 | ||
ba905f5e | 1074 | u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; |
960fb622 ED |
1075 | |
1076 | void netdev_rss_key_fill(void *buffer, size_t len) | |
1077 | { | |
1078 | BUG_ON(len > sizeof(netdev_rss_key)); | |
1079 | net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); | |
1080 | memcpy(buffer, netdev_rss_key, len); | |
1081 | } | |
1082 | EXPORT_SYMBOL(netdev_rss_key_fill); | |
1083 | ||
d4ab4286 KJ |
1084 | static int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max) |
1085 | { | |
1086 | u32 dev_size, current_max = 0; | |
1087 | u32 *indir; | |
1088 | int ret; | |
1089 | ||
1090 | if (!dev->ethtool_ops->get_rxfh_indir_size || | |
1091 | !dev->ethtool_ops->get_rxfh) | |
1092 | return -EOPNOTSUPP; | |
1093 | dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev); | |
1094 | if (dev_size == 0) | |
1095 | return -EOPNOTSUPP; | |
1096 | ||
1097 | indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); | |
1098 | if (!indir) | |
1099 | return -ENOMEM; | |
1100 | ||
1101 | ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL); | |
1102 | if (ret) | |
1103 | goto out; | |
1104 | ||
1105 | while (dev_size--) | |
1106 | current_max = max(current_max, indir[dev_size]); | |
1107 | ||
1108 | *max = current_max; | |
1109 | ||
1110 | out: | |
1111 | kfree(indir); | |
1112 | return ret; | |
1113 | } | |
1114 | ||
a5b6ee29 BH |
1115 | static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, |
1116 | void __user *useraddr) | |
1117 | { | |
7850f63f BH |
1118 | u32 user_size, dev_size; |
1119 | u32 *indir; | |
a5b6ee29 BH |
1120 | int ret; |
1121 | ||
7850f63f | 1122 | if (!dev->ethtool_ops->get_rxfh_indir_size || |
fe62d001 | 1123 | !dev->ethtool_ops->get_rxfh) |
7850f63f BH |
1124 | return -EOPNOTSUPP; |
1125 | dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev); | |
1126 | if (dev_size == 0) | |
a5b6ee29 BH |
1127 | return -EOPNOTSUPP; |
1128 | ||
7850f63f | 1129 | if (copy_from_user(&user_size, |
a5b6ee29 | 1130 | useraddr + offsetof(struct ethtool_rxfh_indir, size), |
7850f63f | 1131 | sizeof(user_size))) |
a5b6ee29 BH |
1132 | return -EFAULT; |
1133 | ||
7850f63f BH |
1134 | if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), |
1135 | &dev_size, sizeof(dev_size))) | |
1136 | return -EFAULT; | |
1137 | ||
1138 | /* If the user buffer size is 0, this is just a query for the | |
1139 | * device table size. Otherwise, if it's smaller than the | |
1140 | * device table size it's an error. | |
1141 | */ | |
1142 | if (user_size < dev_size) | |
1143 | return user_size == 0 ? 0 : -EINVAL; | |
1144 | ||
1145 | indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); | |
a5b6ee29 BH |
1146 | if (!indir) |
1147 | return -ENOMEM; | |
1148 | ||
892311f6 | 1149 | ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL); |
a5b6ee29 BH |
1150 | if (ret) |
1151 | goto out; | |
1152 | ||
7850f63f BH |
1153 | if (copy_to_user(useraddr + |
1154 | offsetof(struct ethtool_rxfh_indir, ring_index[0]), | |
1155 | indir, dev_size * sizeof(indir[0]))) | |
a5b6ee29 BH |
1156 | ret = -EFAULT; |
1157 | ||
1158 | out: | |
1159 | kfree(indir); | |
1160 | return ret; | |
1161 | } | |
1162 | ||
1163 | static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, | |
1164 | void __user *useraddr) | |
1165 | { | |
7850f63f BH |
1166 | struct ethtool_rxnfc rx_rings; |
1167 | u32 user_size, dev_size, i; | |
1168 | u32 *indir; | |
c03a14e8 | 1169 | const struct ethtool_ops *ops = dev->ethtool_ops; |
a5b6ee29 | 1170 | int ret; |
3de0b592 | 1171 | u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); |
a5b6ee29 | 1172 | |
fe62d001 | 1173 | if (!ops->get_rxfh_indir_size || !ops->set_rxfh || |
c03a14e8 | 1174 | !ops->get_rxnfc) |
7850f63f | 1175 | return -EOPNOTSUPP; |
c03a14e8 JP |
1176 | |
1177 | dev_size = ops->get_rxfh_indir_size(dev); | |
7850f63f | 1178 | if (dev_size == 0) |
a5b6ee29 BH |
1179 | return -EOPNOTSUPP; |
1180 | ||
7850f63f | 1181 | if (copy_from_user(&user_size, |
a5b6ee29 | 1182 | useraddr + offsetof(struct ethtool_rxfh_indir, size), |
7850f63f | 1183 | sizeof(user_size))) |
a5b6ee29 BH |
1184 | return -EFAULT; |
1185 | ||
278bc429 | 1186 | if (user_size != 0 && user_size != dev_size) |
7850f63f BH |
1187 | return -EINVAL; |
1188 | ||
1189 | indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); | |
a5b6ee29 BH |
1190 | if (!indir) |
1191 | return -ENOMEM; | |
1192 | ||
7850f63f | 1193 | rx_rings.cmd = ETHTOOL_GRXRINGS; |
c03a14e8 | 1194 | ret = ops->get_rxnfc(dev, &rx_rings, NULL); |
7850f63f BH |
1195 | if (ret) |
1196 | goto out; | |
278bc429 BH |
1197 | |
1198 | if (user_size == 0) { | |
1199 | for (i = 0; i < dev_size; i++) | |
1200 | indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); | |
1201 | } else { | |
3de0b592 VD |
1202 | ret = ethtool_copy_validate_indir(indir, |
1203 | useraddr + ringidx_offset, | |
1204 | &rx_rings, | |
1205 | dev_size); | |
1206 | if (ret) | |
1207 | goto out; | |
1208 | } | |
1209 | ||
892311f6 | 1210 | ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE); |
d4ab4286 KJ |
1211 | if (ret) |
1212 | goto out; | |
1213 | ||
1214 | /* indicate whether rxfh was set to default */ | |
1215 | if (user_size == 0) | |
1216 | dev->priv_flags &= ~IFF_RXFH_CONFIGURED; | |
1217 | else | |
1218 | dev->priv_flags |= IFF_RXFH_CONFIGURED; | |
3de0b592 VD |
1219 | |
1220 | out: | |
1221 | kfree(indir); | |
1222 | return ret; | |
1223 | } | |
1224 | ||
1225 | static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, | |
1226 | void __user *useraddr) | |
1227 | { | |
1228 | int ret; | |
1229 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
f062a384 | 1230 | u32 user_indir_size, user_key_size; |
3de0b592 | 1231 | u32 dev_indir_size = 0, dev_key_size = 0; |
f062a384 | 1232 | struct ethtool_rxfh rxfh; |
3de0b592 | 1233 | u32 total_size; |
f062a384 | 1234 | u32 indir_bytes; |
3de0b592 | 1235 | u32 *indir = NULL; |
892311f6 | 1236 | u8 dev_hfunc = 0; |
3de0b592 VD |
1237 | u8 *hkey = NULL; |
1238 | u8 *rss_config; | |
1239 | ||
892311f6 | 1240 | if (!ops->get_rxfh) |
3de0b592 VD |
1241 | return -EOPNOTSUPP; |
1242 | ||
1243 | if (ops->get_rxfh_indir_size) | |
1244 | dev_indir_size = ops->get_rxfh_indir_size(dev); | |
3de0b592 VD |
1245 | if (ops->get_rxfh_key_size) |
1246 | dev_key_size = ops->get_rxfh_key_size(dev); | |
1247 | ||
f062a384 | 1248 | if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) |
3de0b592 | 1249 | return -EFAULT; |
f062a384 BH |
1250 | user_indir_size = rxfh.indir_size; |
1251 | user_key_size = rxfh.key_size; | |
3de0b592 | 1252 | |
f062a384 | 1253 | /* Check that reserved fields are 0 for now */ |
892311f6 EP |
1254 | if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] || |
1255 | rxfh.rsvd8[2] || rxfh.rsvd32) | |
f062a384 BH |
1256 | return -EINVAL; |
1257 | ||
1258 | rxfh.indir_size = dev_indir_size; | |
1259 | rxfh.key_size = dev_key_size; | |
1260 | if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) | |
3de0b592 VD |
1261 | return -EFAULT; |
1262 | ||
3de0b592 VD |
1263 | if ((user_indir_size && (user_indir_size != dev_indir_size)) || |
1264 | (user_key_size && (user_key_size != dev_key_size))) | |
1265 | return -EINVAL; | |
1266 | ||
1267 | indir_bytes = user_indir_size * sizeof(indir[0]); | |
1268 | total_size = indir_bytes + user_key_size; | |
1269 | rss_config = kzalloc(total_size, GFP_USER); | |
1270 | if (!rss_config) | |
1271 | return -ENOMEM; | |
1272 | ||
1273 | if (user_indir_size) | |
1274 | indir = (u32 *)rss_config; | |
1275 | ||
1276 | if (user_key_size) | |
1277 | hkey = rss_config + indir_bytes; | |
1278 | ||
892311f6 EP |
1279 | ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc); |
1280 | if (ret) | |
1281 | goto out; | |
3de0b592 | 1282 | |
892311f6 EP |
1283 | if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), |
1284 | &dev_hfunc, sizeof(rxfh.hfunc))) { | |
1285 | ret = -EFAULT; | |
1286 | } else if (copy_to_user(useraddr + | |
1287 | offsetof(struct ethtool_rxfh, rss_config[0]), | |
1288 | rss_config, total_size)) { | |
1289 | ret = -EFAULT; | |
1290 | } | |
1291 | out: | |
3de0b592 VD |
1292 | kfree(rss_config); |
1293 | ||
1294 | return ret; | |
1295 | } | |
1296 | ||
1297 | static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, | |
1298 | void __user *useraddr) | |
1299 | { | |
1300 | int ret; | |
1301 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
1302 | struct ethtool_rxnfc rx_rings; | |
f062a384 BH |
1303 | struct ethtool_rxfh rxfh; |
1304 | u32 dev_indir_size = 0, dev_key_size = 0, i; | |
3de0b592 VD |
1305 | u32 *indir = NULL, indir_bytes = 0; |
1306 | u8 *hkey = NULL; | |
1307 | u8 *rss_config; | |
3de0b592 VD |
1308 | u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); |
1309 | ||
892311f6 | 1310 | if (!ops->get_rxnfc || !ops->set_rxfh) |
3de0b592 VD |
1311 | return -EOPNOTSUPP; |
1312 | ||
1313 | if (ops->get_rxfh_indir_size) | |
1314 | dev_indir_size = ops->get_rxfh_indir_size(dev); | |
3de0b592 | 1315 | if (ops->get_rxfh_key_size) |
d340c862 | 1316 | dev_key_size = ops->get_rxfh_key_size(dev); |
3de0b592 | 1317 | |
f062a384 | 1318 | if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) |
3de0b592 VD |
1319 | return -EFAULT; |
1320 | ||
f062a384 | 1321 | /* Check that reserved fields are 0 for now */ |
892311f6 EP |
1322 | if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] || |
1323 | rxfh.rsvd8[2] || rxfh.rsvd32) | |
f062a384 BH |
1324 | return -EINVAL; |
1325 | ||
892311f6 EP |
1326 | /* If either indir, hash key or function is valid, proceed further. |
1327 | * Must request at least one change: indir size, hash key or function. | |
3de0b592 | 1328 | */ |
f062a384 BH |
1329 | if ((rxfh.indir_size && |
1330 | rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && | |
1331 | rxfh.indir_size != dev_indir_size) || | |
1332 | (rxfh.key_size && (rxfh.key_size != dev_key_size)) || | |
1333 | (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && | |
892311f6 | 1334 | rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE)) |
3de0b592 VD |
1335 | return -EINVAL; |
1336 | ||
f062a384 | 1337 | if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) |
3de0b592 VD |
1338 | indir_bytes = dev_indir_size * sizeof(indir[0]); |
1339 | ||
f062a384 | 1340 | rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER); |
3de0b592 VD |
1341 | if (!rss_config) |
1342 | return -ENOMEM; | |
1343 | ||
1344 | rx_rings.cmd = ETHTOOL_GRXRINGS; | |
1345 | ret = ops->get_rxnfc(dev, &rx_rings, NULL); | |
1346 | if (ret) | |
1347 | goto out; | |
1348 | ||
f062a384 BH |
1349 | /* rxfh.indir_size == 0 means reset the indir table to default. |
1350 | * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. | |
3de0b592 | 1351 | */ |
f062a384 BH |
1352 | if (rxfh.indir_size && |
1353 | rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { | |
3de0b592 VD |
1354 | indir = (u32 *)rss_config; |
1355 | ret = ethtool_copy_validate_indir(indir, | |
1356 | useraddr + rss_cfg_offset, | |
1357 | &rx_rings, | |
f062a384 | 1358 | rxfh.indir_size); |
3de0b592 | 1359 | if (ret) |
7850f63f | 1360 | goto out; |
f062a384 | 1361 | } else if (rxfh.indir_size == 0) { |
3de0b592 VD |
1362 | indir = (u32 *)rss_config; |
1363 | for (i = 0; i < dev_indir_size; i++) | |
1364 | indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); | |
1365 | } | |
278bc429 | 1366 | |
f062a384 | 1367 | if (rxfh.key_size) { |
3de0b592 VD |
1368 | hkey = rss_config + indir_bytes; |
1369 | if (copy_from_user(hkey, | |
1370 | useraddr + rss_cfg_offset + indir_bytes, | |
f062a384 | 1371 | rxfh.key_size)) { |
3de0b592 VD |
1372 | ret = -EFAULT; |
1373 | goto out; | |
278bc429 | 1374 | } |
7850f63f BH |
1375 | } |
1376 | ||
892311f6 | 1377 | ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc); |
d4ab4286 KJ |
1378 | if (ret) |
1379 | goto out; | |
1380 | ||
1381 | /* indicate whether rxfh was set to default */ | |
1382 | if (rxfh.indir_size == 0) | |
1383 | dev->priv_flags &= ~IFF_RXFH_CONFIGURED; | |
1384 | else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) | |
1385 | dev->priv_flags |= IFF_RXFH_CONFIGURED; | |
a5b6ee29 BH |
1386 | |
1387 | out: | |
3de0b592 | 1388 | kfree(rss_config); |
a5b6ee29 BH |
1389 | return ret; |
1390 | } | |
1391 | ||
1da177e4 LT |
1392 | static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) |
1393 | { | |
1394 | struct ethtool_regs regs; | |
76fd8593 | 1395 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 LT |
1396 | void *regbuf; |
1397 | int reglen, ret; | |
1398 | ||
1399 | if (!ops->get_regs || !ops->get_regs_len) | |
1400 | return -EOPNOTSUPP; | |
1401 | ||
1402 | if (copy_from_user(®s, useraddr, sizeof(regs))) | |
1403 | return -EFAULT; | |
1404 | ||
1405 | reglen = ops->get_regs_len(dev); | |
1406 | if (regs.len > reglen) | |
1407 | regs.len = reglen; | |
1408 | ||
3808d348 SG |
1409 | regbuf = NULL; |
1410 | if (reglen) { | |
1411 | regbuf = vzalloc(reglen); | |
1412 | if (!regbuf) | |
1413 | return -ENOMEM; | |
1414 | } | |
1da177e4 LT |
1415 | |
1416 | ops->get_regs(dev, ®s, regbuf); | |
1417 | ||
1418 | ret = -EFAULT; | |
1419 | if (copy_to_user(useraddr, ®s, sizeof(regs))) | |
1420 | goto out; | |
1421 | useraddr += offsetof(struct ethtool_regs, data); | |
67ae7cf1 | 1422 | if (regbuf && copy_to_user(useraddr, regbuf, regs.len)) |
1da177e4 LT |
1423 | goto out; |
1424 | ret = 0; | |
1425 | ||
1426 | out: | |
a77f5db3 | 1427 | vfree(regbuf); |
1da177e4 LT |
1428 | return ret; |
1429 | } | |
1430 | ||
d73d3a8c BH |
1431 | static int ethtool_reset(struct net_device *dev, char __user *useraddr) |
1432 | { | |
1433 | struct ethtool_value reset; | |
1434 | int ret; | |
1435 | ||
1436 | if (!dev->ethtool_ops->reset) | |
1437 | return -EOPNOTSUPP; | |
1438 | ||
1439 | if (copy_from_user(&reset, useraddr, sizeof(reset))) | |
1440 | return -EFAULT; | |
1441 | ||
1442 | ret = dev->ethtool_ops->reset(dev, &reset.data); | |
1443 | if (ret) | |
1444 | return ret; | |
1445 | ||
1446 | if (copy_to_user(useraddr, &reset, sizeof(reset))) | |
1447 | return -EFAULT; | |
1448 | return 0; | |
1449 | } | |
1450 | ||
1da177e4 LT |
1451 | static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) |
1452 | { | |
8e557421 | 1453 | struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL }; |
1da177e4 LT |
1454 | |
1455 | if (!dev->ethtool_ops->get_wol) | |
1456 | return -EOPNOTSUPP; | |
1457 | ||
1458 | dev->ethtool_ops->get_wol(dev, &wol); | |
1459 | ||
1460 | if (copy_to_user(useraddr, &wol, sizeof(wol))) | |
1461 | return -EFAULT; | |
1462 | return 0; | |
1463 | } | |
1464 | ||
1465 | static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) | |
1466 | { | |
1467 | struct ethtool_wolinfo wol; | |
1468 | ||
1469 | if (!dev->ethtool_ops->set_wol) | |
1470 | return -EOPNOTSUPP; | |
1471 | ||
1472 | if (copy_from_user(&wol, useraddr, sizeof(wol))) | |
1473 | return -EFAULT; | |
1474 | ||
1475 | return dev->ethtool_ops->set_wol(dev, &wol); | |
1476 | } | |
1477 | ||
80f12ecc YM |
1478 | static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) |
1479 | { | |
1480 | struct ethtool_eee edata; | |
1481 | int rc; | |
1482 | ||
1483 | if (!dev->ethtool_ops->get_eee) | |
1484 | return -EOPNOTSUPP; | |
1485 | ||
1486 | memset(&edata, 0, sizeof(struct ethtool_eee)); | |
1487 | edata.cmd = ETHTOOL_GEEE; | |
1488 | rc = dev->ethtool_ops->get_eee(dev, &edata); | |
1489 | ||
1490 | if (rc) | |
1491 | return rc; | |
1492 | ||
1493 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
1494 | return -EFAULT; | |
1495 | ||
1496 | return 0; | |
1497 | } | |
1498 | ||
1499 | static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) | |
1500 | { | |
1501 | struct ethtool_eee edata; | |
1502 | ||
1503 | if (!dev->ethtool_ops->set_eee) | |
1504 | return -EOPNOTSUPP; | |
1505 | ||
1506 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
1507 | return -EFAULT; | |
1508 | ||
1509 | return dev->ethtool_ops->set_eee(dev, &edata); | |
1510 | } | |
1511 | ||
1da177e4 LT |
1512 | static int ethtool_nway_reset(struct net_device *dev) |
1513 | { | |
1514 | if (!dev->ethtool_ops->nway_reset) | |
1515 | return -EOPNOTSUPP; | |
1516 | ||
1517 | return dev->ethtool_ops->nway_reset(dev); | |
1518 | } | |
1519 | ||
e596e6e4 BH |
1520 | static int ethtool_get_link(struct net_device *dev, char __user *useraddr) |
1521 | { | |
1522 | struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; | |
1523 | ||
1524 | if (!dev->ethtool_ops->get_link) | |
1525 | return -EOPNOTSUPP; | |
1526 | ||
1527 | edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev); | |
1528 | ||
1529 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
1530 | return -EFAULT; | |
1531 | return 0; | |
1532 | } | |
1533 | ||
081d094e BH |
1534 | static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, |
1535 | int (*getter)(struct net_device *, | |
1536 | struct ethtool_eeprom *, u8 *), | |
1537 | u32 total_len) | |
1da177e4 LT |
1538 | { |
1539 | struct ethtool_eeprom eeprom; | |
b131dd5d MSB |
1540 | void __user *userbuf = useraddr + sizeof(eeprom); |
1541 | u32 bytes_remaining; | |
1da177e4 | 1542 | u8 *data; |
b131dd5d | 1543 | int ret = 0; |
1da177e4 | 1544 | |
1da177e4 LT |
1545 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) |
1546 | return -EFAULT; | |
1547 | ||
1548 | /* Check for wrap and zero */ | |
1549 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
1550 | return -EINVAL; | |
1551 | ||
1552 | /* Check for exceeding total eeprom len */ | |
081d094e | 1553 | if (eeprom.offset + eeprom.len > total_len) |
1da177e4 LT |
1554 | return -EINVAL; |
1555 | ||
b131dd5d | 1556 | data = kmalloc(PAGE_SIZE, GFP_USER); |
1da177e4 LT |
1557 | if (!data) |
1558 | return -ENOMEM; | |
1559 | ||
b131dd5d MSB |
1560 | bytes_remaining = eeprom.len; |
1561 | while (bytes_remaining > 0) { | |
1562 | eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); | |
1563 | ||
081d094e | 1564 | ret = getter(dev, &eeprom, data); |
b131dd5d MSB |
1565 | if (ret) |
1566 | break; | |
1567 | if (copy_to_user(userbuf, data, eeprom.len)) { | |
1568 | ret = -EFAULT; | |
1569 | break; | |
1570 | } | |
1571 | userbuf += eeprom.len; | |
1572 | eeprom.offset += eeprom.len; | |
1573 | bytes_remaining -= eeprom.len; | |
1574 | } | |
1da177e4 | 1575 | |
c5835df9 MSB |
1576 | eeprom.len = userbuf - (useraddr + sizeof(eeprom)); |
1577 | eeprom.offset -= eeprom.len; | |
1578 | if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) | |
1579 | ret = -EFAULT; | |
1580 | ||
1da177e4 LT |
1581 | kfree(data); |
1582 | return ret; | |
1583 | } | |
1584 | ||
081d094e BH |
1585 | static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) |
1586 | { | |
1587 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
1588 | ||
e0fb6fb6 GR |
1589 | if (!ops->get_eeprom || !ops->get_eeprom_len || |
1590 | !ops->get_eeprom_len(dev)) | |
081d094e BH |
1591 | return -EOPNOTSUPP; |
1592 | ||
1593 | return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, | |
1594 | ops->get_eeprom_len(dev)); | |
1595 | } | |
1596 | ||
1da177e4 LT |
1597 | static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) |
1598 | { | |
1599 | struct ethtool_eeprom eeprom; | |
76fd8593 | 1600 | const struct ethtool_ops *ops = dev->ethtool_ops; |
b131dd5d MSB |
1601 | void __user *userbuf = useraddr + sizeof(eeprom); |
1602 | u32 bytes_remaining; | |
1da177e4 | 1603 | u8 *data; |
b131dd5d | 1604 | int ret = 0; |
1da177e4 | 1605 | |
e0fb6fb6 GR |
1606 | if (!ops->set_eeprom || !ops->get_eeprom_len || |
1607 | !ops->get_eeprom_len(dev)) | |
1da177e4 LT |
1608 | return -EOPNOTSUPP; |
1609 | ||
1610 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) | |
1611 | return -EFAULT; | |
1612 | ||
1613 | /* Check for wrap and zero */ | |
1614 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
1615 | return -EINVAL; | |
1616 | ||
1617 | /* Check for exceeding total eeprom len */ | |
1618 | if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) | |
1619 | return -EINVAL; | |
1620 | ||
b131dd5d | 1621 | data = kmalloc(PAGE_SIZE, GFP_USER); |
1da177e4 LT |
1622 | if (!data) |
1623 | return -ENOMEM; | |
1624 | ||
b131dd5d MSB |
1625 | bytes_remaining = eeprom.len; |
1626 | while (bytes_remaining > 0) { | |
1627 | eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); | |
1628 | ||
1629 | if (copy_from_user(data, userbuf, eeprom.len)) { | |
1630 | ret = -EFAULT; | |
1631 | break; | |
1632 | } | |
1633 | ret = ops->set_eeprom(dev, &eeprom, data); | |
1634 | if (ret) | |
1635 | break; | |
1636 | userbuf += eeprom.len; | |
1637 | eeprom.offset += eeprom.len; | |
1638 | bytes_remaining -= eeprom.len; | |
1639 | } | |
1da177e4 | 1640 | |
1da177e4 LT |
1641 | kfree(data); |
1642 | return ret; | |
1643 | } | |
1644 | ||
97f8aefb | 1645 | static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, |
1646 | void __user *useraddr) | |
1da177e4 | 1647 | { |
8e557421 | 1648 | struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; |
1da177e4 LT |
1649 | |
1650 | if (!dev->ethtool_ops->get_coalesce) | |
1651 | return -EOPNOTSUPP; | |
1652 | ||
1653 | dev->ethtool_ops->get_coalesce(dev, &coalesce); | |
1654 | ||
1655 | if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) | |
1656 | return -EFAULT; | |
1657 | return 0; | |
1658 | } | |
1659 | ||
97f8aefb | 1660 | static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, |
1661 | void __user *useraddr) | |
1da177e4 LT |
1662 | { |
1663 | struct ethtool_coalesce coalesce; | |
1664 | ||
fa04ae5c | 1665 | if (!dev->ethtool_ops->set_coalesce) |
1da177e4 LT |
1666 | return -EOPNOTSUPP; |
1667 | ||
1668 | if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) | |
1669 | return -EFAULT; | |
1670 | ||
1671 | return dev->ethtool_ops->set_coalesce(dev, &coalesce); | |
1672 | } | |
1673 | ||
1674 | static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) | |
1675 | { | |
8e557421 | 1676 | struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; |
1da177e4 LT |
1677 | |
1678 | if (!dev->ethtool_ops->get_ringparam) | |
1679 | return -EOPNOTSUPP; | |
1680 | ||
1681 | dev->ethtool_ops->get_ringparam(dev, &ringparam); | |
1682 | ||
1683 | if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) | |
1684 | return -EFAULT; | |
1685 | return 0; | |
1686 | } | |
1687 | ||
1688 | static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) | |
1689 | { | |
37e2d99b | 1690 | struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM }; |
1da177e4 | 1691 | |
37e2d99b | 1692 | if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) |
1da177e4 LT |
1693 | return -EOPNOTSUPP; |
1694 | ||
1695 | if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) | |
1696 | return -EFAULT; | |
1697 | ||
37e2d99b EE |
1698 | dev->ethtool_ops->get_ringparam(dev, &max); |
1699 | ||
1700 | /* ensure new ring parameters are within the maximums */ | |
1701 | if (ringparam.rx_pending > max.rx_max_pending || | |
1702 | ringparam.rx_mini_pending > max.rx_mini_max_pending || | |
1703 | ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || | |
1704 | ringparam.tx_pending > max.tx_max_pending) | |
1705 | return -EINVAL; | |
1706 | ||
1da177e4 LT |
1707 | return dev->ethtool_ops->set_ringparam(dev, &ringparam); |
1708 | } | |
1709 | ||
8b5933c3 | 1710 | static noinline_for_stack int ethtool_get_channels(struct net_device *dev, |
1711 | void __user *useraddr) | |
1712 | { | |
1713 | struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; | |
1714 | ||
1715 | if (!dev->ethtool_ops->get_channels) | |
1716 | return -EOPNOTSUPP; | |
1717 | ||
1718 | dev->ethtool_ops->get_channels(dev, &channels); | |
1719 | ||
1720 | if (copy_to_user(useraddr, &channels, sizeof(channels))) | |
1721 | return -EFAULT; | |
1722 | return 0; | |
1723 | } | |
1724 | ||
1725 | static noinline_for_stack int ethtool_set_channels(struct net_device *dev, | |
1726 | void __user *useraddr) | |
1727 | { | |
31a86d13 | 1728 | struct ethtool_channels channels, max = { .cmd = ETHTOOL_GCHANNELS }; |
d4ab4286 | 1729 | u32 max_rx_in_use = 0; |
8b5933c3 | 1730 | |
8bf36862 | 1731 | if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) |
8b5933c3 | 1732 | return -EOPNOTSUPP; |
1733 | ||
1734 | if (copy_from_user(&channels, useraddr, sizeof(channels))) | |
1735 | return -EFAULT; | |
1736 | ||
8bf36862 KJ |
1737 | dev->ethtool_ops->get_channels(dev, &max); |
1738 | ||
1739 | /* ensure new counts are within the maximums */ | |
1740 | if ((channels.rx_count > max.max_rx) || | |
1741 | (channels.tx_count > max.max_tx) || | |
1742 | (channels.combined_count > max.max_combined) || | |
1743 | (channels.other_count > max.max_other)) | |
1744 | return -EINVAL; | |
1745 | ||
d4ab4286 KJ |
1746 | /* ensure the new Rx count fits within the configured Rx flow |
1747 | * indirection table settings */ | |
1748 | if (netif_is_rxfh_configured(dev) && | |
1749 | !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) && | |
1750 | (channels.combined_count + channels.rx_count) <= max_rx_in_use) | |
1751 | return -EINVAL; | |
1752 | ||
8b5933c3 | 1753 | return dev->ethtool_ops->set_channels(dev, &channels); |
1754 | } | |
1755 | ||
1da177e4 LT |
1756 | static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) |
1757 | { | |
1758 | struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM }; | |
1759 | ||
1760 | if (!dev->ethtool_ops->get_pauseparam) | |
1761 | return -EOPNOTSUPP; | |
1762 | ||
1763 | dev->ethtool_ops->get_pauseparam(dev, &pauseparam); | |
1764 | ||
1765 | if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) | |
1766 | return -EFAULT; | |
1767 | return 0; | |
1768 | } | |
1769 | ||
1770 | static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) | |
1771 | { | |
1772 | struct ethtool_pauseparam pauseparam; | |
1773 | ||
e1b90c41 | 1774 | if (!dev->ethtool_ops->set_pauseparam) |
1da177e4 LT |
1775 | return -EOPNOTSUPP; |
1776 | ||
1777 | if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) | |
1778 | return -EFAULT; | |
1779 | ||
1780 | return dev->ethtool_ops->set_pauseparam(dev, &pauseparam); | |
1781 | } | |
1782 | ||
1da177e4 LT |
1783 | static int ethtool_self_test(struct net_device *dev, char __user *useraddr) |
1784 | { | |
1785 | struct ethtool_test test; | |
76fd8593 | 1786 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 1787 | u64 *data; |
ff03d49f | 1788 | int ret, test_len; |
1da177e4 | 1789 | |
a9828ec6 | 1790 | if (!ops->self_test || !ops->get_sset_count) |
1da177e4 LT |
1791 | return -EOPNOTSUPP; |
1792 | ||
a9828ec6 | 1793 | test_len = ops->get_sset_count(dev, ETH_SS_TEST); |
ff03d49f JG |
1794 | if (test_len < 0) |
1795 | return test_len; | |
1796 | WARN_ON(test_len == 0); | |
1797 | ||
1da177e4 LT |
1798 | if (copy_from_user(&test, useraddr, sizeof(test))) |
1799 | return -EFAULT; | |
1800 | ||
ff03d49f JG |
1801 | test.len = test_len; |
1802 | data = kmalloc(test_len * sizeof(u64), GFP_USER); | |
1da177e4 LT |
1803 | if (!data) |
1804 | return -ENOMEM; | |
1805 | ||
1806 | ops->self_test(dev, &test, data); | |
1807 | ||
1808 | ret = -EFAULT; | |
1809 | if (copy_to_user(useraddr, &test, sizeof(test))) | |
1810 | goto out; | |
1811 | useraddr += sizeof(test); | |
1812 | if (copy_to_user(useraddr, data, test.len * sizeof(u64))) | |
1813 | goto out; | |
1814 | ret = 0; | |
1815 | ||
1816 | out: | |
1817 | kfree(data); | |
1818 | return ret; | |
1819 | } | |
1820 | ||
1821 | static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) | |
1822 | { | |
1823 | struct ethtool_gstrings gstrings; | |
1da177e4 LT |
1824 | u8 *data; |
1825 | int ret; | |
1826 | ||
1da177e4 LT |
1827 | if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) |
1828 | return -EFAULT; | |
1829 | ||
340ae165 | 1830 | ret = __ethtool_get_sset_count(dev, gstrings.string_set); |
a9828ec6 BH |
1831 | if (ret < 0) |
1832 | return ret; | |
4d1ceea8 AS |
1833 | if (ret > S32_MAX / ETH_GSTRING_LEN) |
1834 | return -ENOMEM; | |
1835 | WARN_ON_ONCE(!ret); | |
a9828ec6 BH |
1836 | |
1837 | gstrings.len = ret; | |
4d1ceea8 AS |
1838 | data = vzalloc(gstrings.len * ETH_GSTRING_LEN); |
1839 | if (gstrings.len && !data) | |
1da177e4 LT |
1840 | return -ENOMEM; |
1841 | ||
340ae165 | 1842 | __ethtool_get_strings(dev, gstrings.string_set, data); |
1da177e4 LT |
1843 | |
1844 | ret = -EFAULT; | |
1845 | if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) | |
1846 | goto out; | |
1847 | useraddr += sizeof(gstrings); | |
4d1ceea8 AS |
1848 | if (gstrings.len && |
1849 | copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN)) | |
1da177e4 LT |
1850 | goto out; |
1851 | ret = 0; | |
1852 | ||
340ae165 | 1853 | out: |
4d1ceea8 | 1854 | vfree(data); |
1da177e4 LT |
1855 | return ret; |
1856 | } | |
1857 | ||
1858 | static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) | |
1859 | { | |
1860 | struct ethtool_value id; | |
68f512f2 | 1861 | static bool busy; |
c03a14e8 | 1862 | const struct ethtool_ops *ops = dev->ethtool_ops; |
68f512f2 | 1863 | int rc; |
1da177e4 | 1864 | |
c03a14e8 | 1865 | if (!ops->set_phys_id) |
1da177e4 LT |
1866 | return -EOPNOTSUPP; |
1867 | ||
68f512f2 BH |
1868 | if (busy) |
1869 | return -EBUSY; | |
1870 | ||
1da177e4 LT |
1871 | if (copy_from_user(&id, useraddr, sizeof(id))) |
1872 | return -EFAULT; | |
1873 | ||
c03a14e8 | 1874 | rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); |
fce55922 | 1875 | if (rc < 0) |
68f512f2 BH |
1876 | return rc; |
1877 | ||
1878 | /* Drop the RTNL lock while waiting, but prevent reentry or | |
1879 | * removal of the device. | |
1880 | */ | |
1881 | busy = true; | |
1882 | dev_hold(dev); | |
1883 | rtnl_unlock(); | |
1884 | ||
1885 | if (rc == 0) { | |
1886 | /* Driver will handle this itself */ | |
1887 | schedule_timeout_interruptible( | |
143780c6 | 1888 | id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); |
68f512f2 | 1889 | } else { |
fce55922 AB |
1890 | /* Driver expects to be called at twice the frequency in rc */ |
1891 | int n = rc * 2, i, interval = HZ / n; | |
1892 | ||
1893 | /* Count down seconds */ | |
68f512f2 | 1894 | do { |
fce55922 AB |
1895 | /* Count down iterations per second */ |
1896 | i = n; | |
1897 | do { | |
1898 | rtnl_lock(); | |
c03a14e8 | 1899 | rc = ops->set_phys_id(dev, |
fce55922 AB |
1900 | (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); |
1901 | rtnl_unlock(); | |
1902 | if (rc) | |
1903 | break; | |
1904 | schedule_timeout_interruptible(interval); | |
1905 | } while (!signal_pending(current) && --i != 0); | |
68f512f2 BH |
1906 | } while (!signal_pending(current) && |
1907 | (id.data == 0 || --id.data != 0)); | |
1908 | } | |
1909 | ||
1910 | rtnl_lock(); | |
1911 | dev_put(dev); | |
1912 | busy = false; | |
1913 | ||
c03a14e8 | 1914 | (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); |
68f512f2 | 1915 | return rc; |
1da177e4 LT |
1916 | } |
1917 | ||
1918 | static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) | |
1919 | { | |
1920 | struct ethtool_stats stats; | |
76fd8593 | 1921 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 1922 | u64 *data; |
ff03d49f | 1923 | int ret, n_stats; |
1da177e4 | 1924 | |
a9828ec6 | 1925 | if (!ops->get_ethtool_stats || !ops->get_sset_count) |
1da177e4 LT |
1926 | return -EOPNOTSUPP; |
1927 | ||
a9828ec6 | 1928 | n_stats = ops->get_sset_count(dev, ETH_SS_STATS); |
ff03d49f JG |
1929 | if (n_stats < 0) |
1930 | return n_stats; | |
4d1ceea8 AS |
1931 | if (n_stats > S32_MAX / sizeof(u64)) |
1932 | return -ENOMEM; | |
1933 | WARN_ON_ONCE(!n_stats); | |
1da177e4 LT |
1934 | if (copy_from_user(&stats, useraddr, sizeof(stats))) |
1935 | return -EFAULT; | |
1936 | ||
ff03d49f | 1937 | stats.n_stats = n_stats; |
4d1ceea8 AS |
1938 | data = vzalloc(n_stats * sizeof(u64)); |
1939 | if (n_stats && !data) | |
1da177e4 LT |
1940 | return -ENOMEM; |
1941 | ||
1942 | ops->get_ethtool_stats(dev, &stats, data); | |
1943 | ||
1944 | ret = -EFAULT; | |
1945 | if (copy_to_user(useraddr, &stats, sizeof(stats))) | |
1946 | goto out; | |
1947 | useraddr += sizeof(stats); | |
4d1ceea8 | 1948 | if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64))) |
1da177e4 LT |
1949 | goto out; |
1950 | ret = 0; | |
1951 | ||
1952 | out: | |
4d1ceea8 | 1953 | vfree(data); |
1da177e4 LT |
1954 | return ret; |
1955 | } | |
1956 | ||
f3a40945 AL |
1957 | static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) |
1958 | { | |
1959 | struct ethtool_stats stats; | |
1960 | struct phy_device *phydev = dev->phydev; | |
1961 | u64 *data; | |
1962 | int ret, n_stats; | |
1963 | ||
1964 | if (!phydev) | |
1965 | return -EOPNOTSUPP; | |
1966 | ||
1967 | n_stats = phy_get_sset_count(phydev); | |
f3a40945 AL |
1968 | if (n_stats < 0) |
1969 | return n_stats; | |
4d1ceea8 AS |
1970 | if (n_stats > S32_MAX / sizeof(u64)) |
1971 | return -ENOMEM; | |
1972 | WARN_ON_ONCE(!n_stats); | |
f3a40945 AL |
1973 | |
1974 | if (copy_from_user(&stats, useraddr, sizeof(stats))) | |
1975 | return -EFAULT; | |
1976 | ||
1977 | stats.n_stats = n_stats; | |
4d1ceea8 AS |
1978 | data = vzalloc(n_stats * sizeof(u64)); |
1979 | if (n_stats && !data) | |
f3a40945 AL |
1980 | return -ENOMEM; |
1981 | ||
1982 | mutex_lock(&phydev->lock); | |
1983 | phydev->drv->get_stats(phydev, &stats, data); | |
1984 | mutex_unlock(&phydev->lock); | |
1985 | ||
1986 | ret = -EFAULT; | |
1987 | if (copy_to_user(useraddr, &stats, sizeof(stats))) | |
1988 | goto out; | |
1989 | useraddr += sizeof(stats); | |
4d1ceea8 | 1990 | if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64))) |
f3a40945 AL |
1991 | goto out; |
1992 | ret = 0; | |
1993 | ||
1994 | out: | |
4d1ceea8 | 1995 | vfree(data); |
f3a40945 AL |
1996 | return ret; |
1997 | } | |
1998 | ||
0bf0519d | 1999 | static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) |
a6f9a705 JW |
2000 | { |
2001 | struct ethtool_perm_addr epaddr; | |
a6f9a705 | 2002 | |
313674af | 2003 | if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) |
a6f9a705 JW |
2004 | return -EFAULT; |
2005 | ||
313674af MW |
2006 | if (epaddr.size < dev->addr_len) |
2007 | return -ETOOSMALL; | |
2008 | epaddr.size = dev->addr_len; | |
a6f9a705 | 2009 | |
a6f9a705 | 2010 | if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) |
313674af | 2011 | return -EFAULT; |
a6f9a705 | 2012 | useraddr += sizeof(epaddr); |
313674af MW |
2013 | if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) |
2014 | return -EFAULT; | |
2015 | return 0; | |
a6f9a705 JW |
2016 | } |
2017 | ||
13c99b24 JG |
2018 | static int ethtool_get_value(struct net_device *dev, char __user *useraddr, |
2019 | u32 cmd, u32 (*actor)(struct net_device *)) | |
3ae7c0b2 | 2020 | { |
8e557421 | 2021 | struct ethtool_value edata = { .cmd = cmd }; |
3ae7c0b2 | 2022 | |
13c99b24 | 2023 | if (!actor) |
3ae7c0b2 JG |
2024 | return -EOPNOTSUPP; |
2025 | ||
13c99b24 | 2026 | edata.data = actor(dev); |
3ae7c0b2 JG |
2027 | |
2028 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
2029 | return -EFAULT; | |
2030 | return 0; | |
2031 | } | |
2032 | ||
13c99b24 JG |
2033 | static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, |
2034 | void (*actor)(struct net_device *, u32)) | |
3ae7c0b2 JG |
2035 | { |
2036 | struct ethtool_value edata; | |
2037 | ||
13c99b24 | 2038 | if (!actor) |
3ae7c0b2 JG |
2039 | return -EOPNOTSUPP; |
2040 | ||
2041 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
2042 | return -EFAULT; | |
2043 | ||
13c99b24 | 2044 | actor(dev, edata.data); |
339bf024 JG |
2045 | return 0; |
2046 | } | |
2047 | ||
13c99b24 JG |
2048 | static int ethtool_set_value(struct net_device *dev, char __user *useraddr, |
2049 | int (*actor)(struct net_device *, u32)) | |
339bf024 JG |
2050 | { |
2051 | struct ethtool_value edata; | |
2052 | ||
13c99b24 | 2053 | if (!actor) |
339bf024 JG |
2054 | return -EOPNOTSUPP; |
2055 | ||
2056 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
2057 | return -EFAULT; | |
2058 | ||
13c99b24 | 2059 | return actor(dev, edata.data); |
339bf024 JG |
2060 | } |
2061 | ||
97f8aefb | 2062 | static noinline_for_stack int ethtool_flash_device(struct net_device *dev, |
2063 | char __user *useraddr) | |
05c6a8d7 AK |
2064 | { |
2065 | struct ethtool_flash efl; | |
2066 | ||
2067 | if (copy_from_user(&efl, useraddr, sizeof(efl))) | |
2068 | return -EFAULT; | |
2069 | ||
2070 | if (!dev->ethtool_ops->flash_device) | |
2071 | return -EOPNOTSUPP; | |
2072 | ||
786f5281 BH |
2073 | efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; |
2074 | ||
05c6a8d7 AK |
2075 | return dev->ethtool_ops->flash_device(dev, &efl); |
2076 | } | |
2077 | ||
29dd54b7 AC |
2078 | static int ethtool_set_dump(struct net_device *dev, |
2079 | void __user *useraddr) | |
2080 | { | |
2081 | struct ethtool_dump dump; | |
2082 | ||
2083 | if (!dev->ethtool_ops->set_dump) | |
2084 | return -EOPNOTSUPP; | |
2085 | ||
2086 | if (copy_from_user(&dump, useraddr, sizeof(dump))) | |
2087 | return -EFAULT; | |
2088 | ||
2089 | return dev->ethtool_ops->set_dump(dev, &dump); | |
2090 | } | |
2091 | ||
2092 | static int ethtool_get_dump_flag(struct net_device *dev, | |
2093 | void __user *useraddr) | |
2094 | { | |
2095 | int ret; | |
2096 | struct ethtool_dump dump; | |
2097 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2098 | ||
c03a14e8 | 2099 | if (!ops->get_dump_flag) |
29dd54b7 AC |
2100 | return -EOPNOTSUPP; |
2101 | ||
2102 | if (copy_from_user(&dump, useraddr, sizeof(dump))) | |
2103 | return -EFAULT; | |
2104 | ||
2105 | ret = ops->get_dump_flag(dev, &dump); | |
2106 | if (ret) | |
2107 | return ret; | |
2108 | ||
2109 | if (copy_to_user(useraddr, &dump, sizeof(dump))) | |
2110 | return -EFAULT; | |
2111 | return 0; | |
2112 | } | |
2113 | ||
2114 | static int ethtool_get_dump_data(struct net_device *dev, | |
2115 | void __user *useraddr) | |
2116 | { | |
2117 | int ret; | |
2118 | __u32 len; | |
2119 | struct ethtool_dump dump, tmp; | |
2120 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2121 | void *data = NULL; | |
2122 | ||
c03a14e8 | 2123 | if (!ops->get_dump_data || !ops->get_dump_flag) |
29dd54b7 AC |
2124 | return -EOPNOTSUPP; |
2125 | ||
2126 | if (copy_from_user(&dump, useraddr, sizeof(dump))) | |
2127 | return -EFAULT; | |
2128 | ||
2129 | memset(&tmp, 0, sizeof(tmp)); | |
2130 | tmp.cmd = ETHTOOL_GET_DUMP_FLAG; | |
2131 | ret = ops->get_dump_flag(dev, &tmp); | |
2132 | if (ret) | |
2133 | return ret; | |
2134 | ||
c590b5e2 | 2135 | len = min(tmp.len, dump.len); |
29dd54b7 AC |
2136 | if (!len) |
2137 | return -EFAULT; | |
2138 | ||
c590b5e2 MS |
2139 | /* Don't ever let the driver think there's more space available |
2140 | * than it requested with .get_dump_flag(). | |
2141 | */ | |
2142 | dump.len = len; | |
2143 | ||
2144 | /* Always allocate enough space to hold the whole thing so that the | |
2145 | * driver does not need to check the length and bother with partial | |
2146 | * dumping. | |
2147 | */ | |
29dd54b7 AC |
2148 | data = vzalloc(tmp.len); |
2149 | if (!data) | |
2150 | return -ENOMEM; | |
2151 | ret = ops->get_dump_data(dev, &dump, data); | |
2152 | if (ret) | |
2153 | goto out; | |
2154 | ||
c590b5e2 MS |
2155 | /* There are two sane possibilities: |
2156 | * 1. The driver's .get_dump_data() does not touch dump.len. | |
2157 | * 2. Or it may set dump.len to how much it really writes, which | |
2158 | * should be tmp.len (or len if it can do a partial dump). | |
2159 | * In any case respond to userspace with the actual length of data | |
2160 | * it's receiving. | |
2161 | */ | |
2162 | WARN_ON(dump.len != len && dump.len != tmp.len); | |
2163 | dump.len = len; | |
2164 | ||
29dd54b7 AC |
2165 | if (copy_to_user(useraddr, &dump, sizeof(dump))) { |
2166 | ret = -EFAULT; | |
2167 | goto out; | |
2168 | } | |
2169 | useraddr += offsetof(struct ethtool_dump, data); | |
2170 | if (copy_to_user(useraddr, data, len)) | |
2171 | ret = -EFAULT; | |
2172 | out: | |
2173 | vfree(data); | |
2174 | return ret; | |
2175 | } | |
2176 | ||
c8f3a8c3 RC |
2177 | static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) |
2178 | { | |
2179 | int err = 0; | |
2180 | struct ethtool_ts_info info; | |
2181 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2182 | struct phy_device *phydev = dev->phydev; | |
2183 | ||
2184 | memset(&info, 0, sizeof(info)); | |
2185 | info.cmd = ETHTOOL_GET_TS_INFO; | |
2186 | ||
2187 | if (phydev && phydev->drv && phydev->drv->ts_info) { | |
c8f3a8c3 | 2188 | err = phydev->drv->ts_info(phydev, &info); |
c03a14e8 | 2189 | } else if (ops->get_ts_info) { |
c8f3a8c3 | 2190 | err = ops->get_ts_info(dev, &info); |
c8f3a8c3 RC |
2191 | } else { |
2192 | info.so_timestamping = | |
2193 | SOF_TIMESTAMPING_RX_SOFTWARE | | |
2194 | SOF_TIMESTAMPING_SOFTWARE; | |
2195 | info.phc_index = -1; | |
2196 | } | |
2197 | ||
2198 | if (err) | |
2199 | return err; | |
2200 | ||
2201 | if (copy_to_user(useraddr, &info, sizeof(info))) | |
2202 | err = -EFAULT; | |
2203 | ||
2204 | return err; | |
2205 | } | |
2206 | ||
2f438366 ES |
2207 | static int __ethtool_get_module_info(struct net_device *dev, |
2208 | struct ethtool_modinfo *modinfo) | |
2209 | { | |
2210 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2211 | struct phy_device *phydev = dev->phydev; | |
2212 | ||
2213 | if (phydev && phydev->drv && phydev->drv->module_info) | |
2214 | return phydev->drv->module_info(phydev, modinfo); | |
2215 | ||
2216 | if (ops->get_module_info) | |
2217 | return ops->get_module_info(dev, modinfo); | |
2218 | ||
2219 | return -EOPNOTSUPP; | |
2220 | } | |
2221 | ||
41c3cb6d SH |
2222 | static int ethtool_get_module_info(struct net_device *dev, |
2223 | void __user *useraddr) | |
2224 | { | |
2225 | int ret; | |
2226 | struct ethtool_modinfo modinfo; | |
41c3cb6d SH |
2227 | |
2228 | if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) | |
2229 | return -EFAULT; | |
2230 | ||
2f438366 | 2231 | ret = __ethtool_get_module_info(dev, &modinfo); |
41c3cb6d SH |
2232 | if (ret) |
2233 | return ret; | |
2234 | ||
2235 | if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) | |
2236 | return -EFAULT; | |
2237 | ||
2238 | return 0; | |
2239 | } | |
2240 | ||
2f438366 ES |
2241 | static int __ethtool_get_module_eeprom(struct net_device *dev, |
2242 | struct ethtool_eeprom *ee, u8 *data) | |
2243 | { | |
2244 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2245 | struct phy_device *phydev = dev->phydev; | |
2246 | ||
2247 | if (phydev && phydev->drv && phydev->drv->module_eeprom) | |
2248 | return phydev->drv->module_eeprom(phydev, ee, data); | |
2249 | ||
2250 | if (ops->get_module_eeprom) | |
2251 | return ops->get_module_eeprom(dev, ee, data); | |
2252 | ||
2253 | return -EOPNOTSUPP; | |
2254 | } | |
2255 | ||
41c3cb6d SH |
2256 | static int ethtool_get_module_eeprom(struct net_device *dev, |
2257 | void __user *useraddr) | |
2258 | { | |
2259 | int ret; | |
2260 | struct ethtool_modinfo modinfo; | |
41c3cb6d | 2261 | |
2f438366 | 2262 | ret = __ethtool_get_module_info(dev, &modinfo); |
41c3cb6d SH |
2263 | if (ret) |
2264 | return ret; | |
2265 | ||
2f438366 ES |
2266 | return ethtool_get_any_eeprom(dev, useraddr, |
2267 | __ethtool_get_module_eeprom, | |
41c3cb6d SH |
2268 | modinfo.eeprom_len); |
2269 | } | |
2270 | ||
f0db9b07 GV |
2271 | static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) |
2272 | { | |
2273 | switch (tuna->id) { | |
2274 | case ETHTOOL_RX_COPYBREAK: | |
1255a505 | 2275 | case ETHTOOL_TX_COPYBREAK: |
f0db9b07 GV |
2276 | if (tuna->len != sizeof(u32) || |
2277 | tuna->type_id != ETHTOOL_TUNABLE_U32) | |
2278 | return -EINVAL; | |
2279 | break; | |
2280 | default: | |
2281 | return -EINVAL; | |
2282 | } | |
2283 | ||
2284 | return 0; | |
2285 | } | |
2286 | ||
2287 | static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) | |
2288 | { | |
2289 | int ret; | |
2290 | struct ethtool_tunable tuna; | |
2291 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2292 | void *data; | |
2293 | ||
2294 | if (!ops->get_tunable) | |
2295 | return -EOPNOTSUPP; | |
2296 | if (copy_from_user(&tuna, useraddr, sizeof(tuna))) | |
2297 | return -EFAULT; | |
2298 | ret = ethtool_tunable_valid(&tuna); | |
2299 | if (ret) | |
2300 | return ret; | |
2301 | data = kmalloc(tuna.len, GFP_USER); | |
2302 | if (!data) | |
2303 | return -ENOMEM; | |
2304 | ret = ops->get_tunable(dev, &tuna, data); | |
2305 | if (ret) | |
2306 | goto out; | |
2307 | useraddr += sizeof(tuna); | |
2308 | ret = -EFAULT; | |
2309 | if (copy_to_user(useraddr, data, tuna.len)) | |
2310 | goto out; | |
2311 | ret = 0; | |
2312 | ||
2313 | out: | |
2314 | kfree(data); | |
2315 | return ret; | |
2316 | } | |
2317 | ||
2318 | static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) | |
2319 | { | |
2320 | int ret; | |
2321 | struct ethtool_tunable tuna; | |
2322 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2323 | void *data; | |
2324 | ||
2325 | if (!ops->set_tunable) | |
2326 | return -EOPNOTSUPP; | |
2327 | if (copy_from_user(&tuna, useraddr, sizeof(tuna))) | |
2328 | return -EFAULT; | |
2329 | ret = ethtool_tunable_valid(&tuna); | |
2330 | if (ret) | |
2331 | return ret; | |
f0db9b07 | 2332 | useraddr += sizeof(tuna); |
30e7e3ec AV |
2333 | data = memdup_user(useraddr, tuna.len); |
2334 | if (IS_ERR(data)) | |
2335 | return PTR_ERR(data); | |
f0db9b07 GV |
2336 | ret = ops->set_tunable(dev, &tuna, data); |
2337 | ||
f0db9b07 GV |
2338 | kfree(data); |
2339 | return ret; | |
2340 | } | |
2341 | ||
421797b1 KL |
2342 | static int ethtool_get_per_queue_coalesce(struct net_device *dev, |
2343 | void __user *useraddr, | |
2344 | struct ethtool_per_queue_op *per_queue_opt) | |
2345 | { | |
2346 | u32 bit; | |
2347 | int ret; | |
2348 | DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); | |
2349 | ||
2350 | if (!dev->ethtool_ops->get_per_queue_coalesce) | |
2351 | return -EOPNOTSUPP; | |
2352 | ||
2353 | useraddr += sizeof(*per_queue_opt); | |
2354 | ||
3aa56885 YN |
2355 | bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, |
2356 | MAX_NUM_QUEUE); | |
421797b1 KL |
2357 | |
2358 | for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { | |
2359 | struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; | |
2360 | ||
2361 | ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); | |
2362 | if (ret != 0) | |
2363 | return ret; | |
2364 | if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) | |
2365 | return -EFAULT; | |
2366 | useraddr += sizeof(coalesce); | |
2367 | } | |
2368 | ||
2369 | return 0; | |
2370 | } | |
2371 | ||
f38d138a KL |
2372 | static int ethtool_set_per_queue_coalesce(struct net_device *dev, |
2373 | void __user *useraddr, | |
2374 | struct ethtool_per_queue_op *per_queue_opt) | |
2375 | { | |
2376 | u32 bit; | |
2377 | int i, ret = 0; | |
2378 | int n_queue; | |
2379 | struct ethtool_coalesce *backup = NULL, *tmp = NULL; | |
2380 | DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); | |
2381 | ||
2382 | if ((!dev->ethtool_ops->set_per_queue_coalesce) || | |
2383 | (!dev->ethtool_ops->get_per_queue_coalesce)) | |
2384 | return -EOPNOTSUPP; | |
2385 | ||
2386 | useraddr += sizeof(*per_queue_opt); | |
2387 | ||
3aa56885 | 2388 | bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); |
f38d138a KL |
2389 | n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); |
2390 | tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); | |
2391 | if (!backup) | |
2392 | return -ENOMEM; | |
2393 | ||
2394 | for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { | |
2395 | struct ethtool_coalesce coalesce; | |
2396 | ||
2397 | ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); | |
2398 | if (ret != 0) | |
2399 | goto roll_back; | |
2400 | ||
2401 | tmp++; | |
2402 | ||
2403 | if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { | |
2404 | ret = -EFAULT; | |
2405 | goto roll_back; | |
2406 | } | |
2407 | ||
2408 | ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); | |
2409 | if (ret != 0) | |
2410 | goto roll_back; | |
2411 | ||
2412 | useraddr += sizeof(coalesce); | |
2413 | } | |
2414 | ||
2415 | roll_back: | |
2416 | if (ret != 0) { | |
2417 | tmp = backup; | |
2418 | for_each_set_bit(i, queue_mask, bit) { | |
2419 | dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); | |
2420 | tmp++; | |
2421 | } | |
2422 | } | |
2423 | kfree(backup); | |
2424 | ||
2425 | return ret; | |
2426 | } | |
2427 | ||
ac2c7ad0 KL |
2428 | static int ethtool_set_per_queue(struct net_device *dev, void __user *useraddr) |
2429 | { | |
2430 | struct ethtool_per_queue_op per_queue_opt; | |
2431 | ||
2432 | if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) | |
2433 | return -EFAULT; | |
2434 | ||
2435 | switch (per_queue_opt.sub_command) { | |
421797b1 KL |
2436 | case ETHTOOL_GCOALESCE: |
2437 | return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); | |
f38d138a KL |
2438 | case ETHTOOL_SCOALESCE: |
2439 | return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); | |
ac2c7ad0 KL |
2440 | default: |
2441 | return -EOPNOTSUPP; | |
2442 | }; | |
2443 | } | |
2444 | ||
968ad9da RL |
2445 | static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) |
2446 | { | |
2447 | switch (tuna->id) { | |
65feddd5 RL |
2448 | case ETHTOOL_PHY_DOWNSHIFT: |
2449 | if (tuna->len != sizeof(u8) || | |
2450 | tuna->type_id != ETHTOOL_TUNABLE_U8) | |
2451 | return -EINVAL; | |
2452 | break; | |
968ad9da RL |
2453 | default: |
2454 | return -EINVAL; | |
2455 | } | |
2456 | ||
2457 | return 0; | |
2458 | } | |
2459 | ||
2460 | static int get_phy_tunable(struct net_device *dev, void __user *useraddr) | |
2461 | { | |
2462 | int ret; | |
2463 | struct ethtool_tunable tuna; | |
2464 | struct phy_device *phydev = dev->phydev; | |
2465 | void *data; | |
2466 | ||
2467 | if (!(phydev && phydev->drv && phydev->drv->get_tunable)) | |
2468 | return -EOPNOTSUPP; | |
2469 | ||
2470 | if (copy_from_user(&tuna, useraddr, sizeof(tuna))) | |
2471 | return -EFAULT; | |
2472 | ret = ethtool_phy_tunable_valid(&tuna); | |
2473 | if (ret) | |
2474 | return ret; | |
2475 | data = kmalloc(tuna.len, GFP_USER); | |
2476 | if (!data) | |
2477 | return -ENOMEM; | |
4b65246b | 2478 | mutex_lock(&phydev->lock); |
968ad9da | 2479 | ret = phydev->drv->get_tunable(phydev, &tuna, data); |
4b65246b | 2480 | mutex_unlock(&phydev->lock); |
968ad9da RL |
2481 | if (ret) |
2482 | goto out; | |
2483 | useraddr += sizeof(tuna); | |
2484 | ret = -EFAULT; | |
2485 | if (copy_to_user(useraddr, data, tuna.len)) | |
2486 | goto out; | |
2487 | ret = 0; | |
2488 | ||
2489 | out: | |
2490 | kfree(data); | |
2491 | return ret; | |
2492 | } | |
2493 | ||
2494 | static int set_phy_tunable(struct net_device *dev, void __user *useraddr) | |
2495 | { | |
2496 | int ret; | |
2497 | struct ethtool_tunable tuna; | |
2498 | struct phy_device *phydev = dev->phydev; | |
2499 | void *data; | |
2500 | ||
2501 | if (!(phydev && phydev->drv && phydev->drv->set_tunable)) | |
2502 | return -EOPNOTSUPP; | |
2503 | if (copy_from_user(&tuna, useraddr, sizeof(tuna))) | |
2504 | return -EFAULT; | |
2505 | ret = ethtool_phy_tunable_valid(&tuna); | |
2506 | if (ret) | |
2507 | return ret; | |
968ad9da | 2508 | useraddr += sizeof(tuna); |
30e7e3ec AV |
2509 | data = memdup_user(useraddr, tuna.len); |
2510 | if (IS_ERR(data)) | |
2511 | return PTR_ERR(data); | |
4b65246b | 2512 | mutex_lock(&phydev->lock); |
968ad9da | 2513 | ret = phydev->drv->set_tunable(phydev, &tuna, data); |
4b65246b | 2514 | mutex_unlock(&phydev->lock); |
968ad9da | 2515 | |
968ad9da RL |
2516 | kfree(data); |
2517 | return ret; | |
2518 | } | |
2519 | ||
1a5f3da2 VSR |
2520 | static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) |
2521 | { | |
2522 | struct ethtool_fecparam fecparam = { ETHTOOL_GFECPARAM }; | |
a6d50512 | 2523 | int rc; |
1a5f3da2 VSR |
2524 | |
2525 | if (!dev->ethtool_ops->get_fecparam) | |
2526 | return -EOPNOTSUPP; | |
2527 | ||
a6d50512 EC |
2528 | rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); |
2529 | if (rc) | |
2530 | return rc; | |
1a5f3da2 VSR |
2531 | |
2532 | if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) | |
2533 | return -EFAULT; | |
2534 | return 0; | |
2535 | } | |
2536 | ||
2537 | static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) | |
2538 | { | |
2539 | struct ethtool_fecparam fecparam; | |
2540 | ||
2541 | if (!dev->ethtool_ops->set_fecparam) | |
2542 | return -EOPNOTSUPP; | |
2543 | ||
2544 | if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) | |
2545 | return -EFAULT; | |
2546 | ||
2547 | return dev->ethtool_ops->set_fecparam(dev, &fecparam); | |
2548 | } | |
2549 | ||
600fed5e | 2550 | /* The main entry point in this file. Called from net/core/dev_ioctl.c */ |
1da177e4 | 2551 | |
881d966b | 2552 | int dev_ethtool(struct net *net, struct ifreq *ifr) |
1da177e4 | 2553 | { |
881d966b | 2554 | struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name); |
1da177e4 | 2555 | void __user *useraddr = ifr->ifr_data; |
ac2c7ad0 | 2556 | u32 ethcmd, sub_cmd; |
1da177e4 | 2557 | int rc; |
b29d3145 | 2558 | netdev_features_t old_features; |
1da177e4 | 2559 | |
1da177e4 LT |
2560 | if (!dev || !netif_device_present(dev)) |
2561 | return -ENODEV; | |
2562 | ||
97f8aefb | 2563 | if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) |
1da177e4 LT |
2564 | return -EFAULT; |
2565 | ||
ac2c7ad0 KL |
2566 | if (ethcmd == ETHTOOL_PERQUEUE) { |
2567 | if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) | |
2568 | return -EFAULT; | |
2569 | } else { | |
2570 | sub_cmd = ethcmd; | |
2571 | } | |
75f3123c | 2572 | /* Allow some commands to be done by anyone */ |
ac2c7ad0 | 2573 | switch (sub_cmd) { |
0fdc100b | 2574 | case ETHTOOL_GSET: |
75f3123c | 2575 | case ETHTOOL_GDRVINFO: |
75f3123c | 2576 | case ETHTOOL_GMSGLVL: |
2da45db2 | 2577 | case ETHTOOL_GLINK: |
75f3123c SH |
2578 | case ETHTOOL_GCOALESCE: |
2579 | case ETHTOOL_GRINGPARAM: | |
2580 | case ETHTOOL_GPAUSEPARAM: | |
2581 | case ETHTOOL_GRXCSUM: | |
2582 | case ETHTOOL_GTXCSUM: | |
2583 | case ETHTOOL_GSG: | |
f80400a2 | 2584 | case ETHTOOL_GSSET_INFO: |
75f3123c | 2585 | case ETHTOOL_GSTRINGS: |
2da45db2 | 2586 | case ETHTOOL_GSTATS: |
f3a40945 | 2587 | case ETHTOOL_GPHYSTATS: |
75f3123c SH |
2588 | case ETHTOOL_GTSO: |
2589 | case ETHTOOL_GPERMADDR: | |
75f3123c | 2590 | case ETHTOOL_GGSO: |
1cab819b | 2591 | case ETHTOOL_GGRO: |
339bf024 JG |
2592 | case ETHTOOL_GFLAGS: |
2593 | case ETHTOOL_GPFLAGS: | |
0853ad66 | 2594 | case ETHTOOL_GRXFH: |
59089d8d SB |
2595 | case ETHTOOL_GRXRINGS: |
2596 | case ETHTOOL_GRXCLSRLCNT: | |
2597 | case ETHTOOL_GRXCLSRULE: | |
2598 | case ETHTOOL_GRXCLSRLALL: | |
2da45db2 | 2599 | case ETHTOOL_GRXFHINDIR: |
3de0b592 | 2600 | case ETHTOOL_GRSSH: |
5455c699 | 2601 | case ETHTOOL_GFEATURES: |
2da45db2 | 2602 | case ETHTOOL_GCHANNELS: |
c8f3a8c3 | 2603 | case ETHTOOL_GET_TS_INFO: |
2da45db2 | 2604 | case ETHTOOL_GEEE: |
f0db9b07 | 2605 | case ETHTOOL_GTUNABLE: |
968ad9da | 2606 | case ETHTOOL_PHY_GTUNABLE: |
8006f6bf | 2607 | case ETHTOOL_GLINKSETTINGS: |
1a5f3da2 | 2608 | case ETHTOOL_GFECPARAM: |
75f3123c SH |
2609 | break; |
2610 | default: | |
5e1fccc0 | 2611 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
75f3123c SH |
2612 | return -EPERM; |
2613 | } | |
2614 | ||
97f8aefb | 2615 | if (dev->ethtool_ops->begin) { |
2616 | rc = dev->ethtool_ops->begin(dev); | |
2617 | if (rc < 0) | |
1da177e4 | 2618 | return rc; |
97f8aefb | 2619 | } |
d8a33ac4 SH |
2620 | old_features = dev->features; |
2621 | ||
1da177e4 LT |
2622 | switch (ethcmd) { |
2623 | case ETHTOOL_GSET: | |
2624 | rc = ethtool_get_settings(dev, useraddr); | |
2625 | break; | |
2626 | case ETHTOOL_SSET: | |
2627 | rc = ethtool_set_settings(dev, useraddr); | |
2628 | break; | |
2629 | case ETHTOOL_GDRVINFO: | |
2630 | rc = ethtool_get_drvinfo(dev, useraddr); | |
1da177e4 LT |
2631 | break; |
2632 | case ETHTOOL_GREGS: | |
2633 | rc = ethtool_get_regs(dev, useraddr); | |
2634 | break; | |
2635 | case ETHTOOL_GWOL: | |
2636 | rc = ethtool_get_wol(dev, useraddr); | |
2637 | break; | |
2638 | case ETHTOOL_SWOL: | |
2639 | rc = ethtool_set_wol(dev, useraddr); | |
2640 | break; | |
2641 | case ETHTOOL_GMSGLVL: | |
13c99b24 JG |
2642 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
2643 | dev->ethtool_ops->get_msglevel); | |
1da177e4 LT |
2644 | break; |
2645 | case ETHTOOL_SMSGLVL: | |
13c99b24 JG |
2646 | rc = ethtool_set_value_void(dev, useraddr, |
2647 | dev->ethtool_ops->set_msglevel); | |
1da177e4 | 2648 | break; |
80f12ecc YM |
2649 | case ETHTOOL_GEEE: |
2650 | rc = ethtool_get_eee(dev, useraddr); | |
2651 | break; | |
2652 | case ETHTOOL_SEEE: | |
2653 | rc = ethtool_set_eee(dev, useraddr); | |
2654 | break; | |
1da177e4 LT |
2655 | case ETHTOOL_NWAY_RST: |
2656 | rc = ethtool_nway_reset(dev); | |
2657 | break; | |
2658 | case ETHTOOL_GLINK: | |
e596e6e4 | 2659 | rc = ethtool_get_link(dev, useraddr); |
1da177e4 LT |
2660 | break; |
2661 | case ETHTOOL_GEEPROM: | |
2662 | rc = ethtool_get_eeprom(dev, useraddr); | |
2663 | break; | |
2664 | case ETHTOOL_SEEPROM: | |
2665 | rc = ethtool_set_eeprom(dev, useraddr); | |
2666 | break; | |
2667 | case ETHTOOL_GCOALESCE: | |
2668 | rc = ethtool_get_coalesce(dev, useraddr); | |
2669 | break; | |
2670 | case ETHTOOL_SCOALESCE: | |
2671 | rc = ethtool_set_coalesce(dev, useraddr); | |
2672 | break; | |
2673 | case ETHTOOL_GRINGPARAM: | |
2674 | rc = ethtool_get_ringparam(dev, useraddr); | |
2675 | break; | |
2676 | case ETHTOOL_SRINGPARAM: | |
2677 | rc = ethtool_set_ringparam(dev, useraddr); | |
2678 | break; | |
2679 | case ETHTOOL_GPAUSEPARAM: | |
2680 | rc = ethtool_get_pauseparam(dev, useraddr); | |
2681 | break; | |
2682 | case ETHTOOL_SPAUSEPARAM: | |
2683 | rc = ethtool_set_pauseparam(dev, useraddr); | |
2684 | break; | |
1da177e4 LT |
2685 | case ETHTOOL_TEST: |
2686 | rc = ethtool_self_test(dev, useraddr); | |
2687 | break; | |
2688 | case ETHTOOL_GSTRINGS: | |
2689 | rc = ethtool_get_strings(dev, useraddr); | |
2690 | break; | |
2691 | case ETHTOOL_PHYS_ID: | |
2692 | rc = ethtool_phys_id(dev, useraddr); | |
2693 | break; | |
2694 | case ETHTOOL_GSTATS: | |
2695 | rc = ethtool_get_stats(dev, useraddr); | |
2696 | break; | |
a6f9a705 JW |
2697 | case ETHTOOL_GPERMADDR: |
2698 | rc = ethtool_get_perm_addr(dev, useraddr); | |
2699 | break; | |
3ae7c0b2 | 2700 | case ETHTOOL_GFLAGS: |
13c99b24 | 2701 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
bc5787c6 | 2702 | __ethtool_get_flags); |
3ae7c0b2 JG |
2703 | break; |
2704 | case ETHTOOL_SFLAGS: | |
da8ac86c | 2705 | rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); |
3ae7c0b2 | 2706 | break; |
339bf024 | 2707 | case ETHTOOL_GPFLAGS: |
13c99b24 JG |
2708 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
2709 | dev->ethtool_ops->get_priv_flags); | |
339bf024 JG |
2710 | break; |
2711 | case ETHTOOL_SPFLAGS: | |
13c99b24 JG |
2712 | rc = ethtool_set_value(dev, useraddr, |
2713 | dev->ethtool_ops->set_priv_flags); | |
339bf024 | 2714 | break; |
0853ad66 | 2715 | case ETHTOOL_GRXFH: |
59089d8d SB |
2716 | case ETHTOOL_GRXRINGS: |
2717 | case ETHTOOL_GRXCLSRLCNT: | |
2718 | case ETHTOOL_GRXCLSRULE: | |
2719 | case ETHTOOL_GRXCLSRLALL: | |
bf988435 | 2720 | rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); |
0853ad66 SB |
2721 | break; |
2722 | case ETHTOOL_SRXFH: | |
59089d8d SB |
2723 | case ETHTOOL_SRXCLSRLDEL: |
2724 | case ETHTOOL_SRXCLSRLINS: | |
bf988435 | 2725 | rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); |
0853ad66 | 2726 | break; |
05c6a8d7 AK |
2727 | case ETHTOOL_FLASHDEV: |
2728 | rc = ethtool_flash_device(dev, useraddr); | |
2729 | break; | |
d73d3a8c BH |
2730 | case ETHTOOL_RESET: |
2731 | rc = ethtool_reset(dev, useraddr); | |
2732 | break; | |
723b2f57 JG |
2733 | case ETHTOOL_GSSET_INFO: |
2734 | rc = ethtool_get_sset_info(dev, useraddr); | |
2735 | break; | |
a5b6ee29 BH |
2736 | case ETHTOOL_GRXFHINDIR: |
2737 | rc = ethtool_get_rxfh_indir(dev, useraddr); | |
2738 | break; | |
2739 | case ETHTOOL_SRXFHINDIR: | |
2740 | rc = ethtool_set_rxfh_indir(dev, useraddr); | |
2741 | break; | |
3de0b592 VD |
2742 | case ETHTOOL_GRSSH: |
2743 | rc = ethtool_get_rxfh(dev, useraddr); | |
2744 | break; | |
2745 | case ETHTOOL_SRSSH: | |
2746 | rc = ethtool_set_rxfh(dev, useraddr); | |
2747 | break; | |
5455c699 MM |
2748 | case ETHTOOL_GFEATURES: |
2749 | rc = ethtool_get_features(dev, useraddr); | |
2750 | break; | |
2751 | case ETHTOOL_SFEATURES: | |
2752 | rc = ethtool_set_features(dev, useraddr); | |
2753 | break; | |
0a417704 | 2754 | case ETHTOOL_GTXCSUM: |
e83d360d | 2755 | case ETHTOOL_GRXCSUM: |
0a417704 MM |
2756 | case ETHTOOL_GSG: |
2757 | case ETHTOOL_GTSO: | |
0a417704 MM |
2758 | case ETHTOOL_GGSO: |
2759 | case ETHTOOL_GGRO: | |
2760 | rc = ethtool_get_one_feature(dev, useraddr, ethcmd); | |
2761 | break; | |
2762 | case ETHTOOL_STXCSUM: | |
e83d360d | 2763 | case ETHTOOL_SRXCSUM: |
0a417704 MM |
2764 | case ETHTOOL_SSG: |
2765 | case ETHTOOL_STSO: | |
0a417704 MM |
2766 | case ETHTOOL_SGSO: |
2767 | case ETHTOOL_SGRO: | |
2768 | rc = ethtool_set_one_feature(dev, useraddr, ethcmd); | |
2769 | break; | |
8b5933c3 | 2770 | case ETHTOOL_GCHANNELS: |
2771 | rc = ethtool_get_channels(dev, useraddr); | |
2772 | break; | |
2773 | case ETHTOOL_SCHANNELS: | |
2774 | rc = ethtool_set_channels(dev, useraddr); | |
2775 | break; | |
29dd54b7 AC |
2776 | case ETHTOOL_SET_DUMP: |
2777 | rc = ethtool_set_dump(dev, useraddr); | |
2778 | break; | |
2779 | case ETHTOOL_GET_DUMP_FLAG: | |
2780 | rc = ethtool_get_dump_flag(dev, useraddr); | |
2781 | break; | |
2782 | case ETHTOOL_GET_DUMP_DATA: | |
2783 | rc = ethtool_get_dump_data(dev, useraddr); | |
2784 | break; | |
c8f3a8c3 RC |
2785 | case ETHTOOL_GET_TS_INFO: |
2786 | rc = ethtool_get_ts_info(dev, useraddr); | |
2787 | break; | |
41c3cb6d SH |
2788 | case ETHTOOL_GMODULEINFO: |
2789 | rc = ethtool_get_module_info(dev, useraddr); | |
2790 | break; | |
2791 | case ETHTOOL_GMODULEEEPROM: | |
2792 | rc = ethtool_get_module_eeprom(dev, useraddr); | |
2793 | break; | |
f0db9b07 GV |
2794 | case ETHTOOL_GTUNABLE: |
2795 | rc = ethtool_get_tunable(dev, useraddr); | |
2796 | break; | |
2797 | case ETHTOOL_STUNABLE: | |
2798 | rc = ethtool_set_tunable(dev, useraddr); | |
2799 | break; | |
f3a40945 AL |
2800 | case ETHTOOL_GPHYSTATS: |
2801 | rc = ethtool_get_phy_stats(dev, useraddr); | |
2802 | break; | |
ac2c7ad0 KL |
2803 | case ETHTOOL_PERQUEUE: |
2804 | rc = ethtool_set_per_queue(dev, useraddr); | |
2805 | break; | |
3f1ac7a7 DD |
2806 | case ETHTOOL_GLINKSETTINGS: |
2807 | rc = ethtool_get_link_ksettings(dev, useraddr); | |
2808 | break; | |
2809 | case ETHTOOL_SLINKSETTINGS: | |
2810 | rc = ethtool_set_link_ksettings(dev, useraddr); | |
2811 | break; | |
968ad9da RL |
2812 | case ETHTOOL_PHY_GTUNABLE: |
2813 | rc = get_phy_tunable(dev, useraddr); | |
2814 | break; | |
2815 | case ETHTOOL_PHY_STUNABLE: | |
2816 | rc = set_phy_tunable(dev, useraddr); | |
2817 | break; | |
1a5f3da2 VSR |
2818 | case ETHTOOL_GFECPARAM: |
2819 | rc = ethtool_get_fecparam(dev, useraddr); | |
2820 | break; | |
2821 | case ETHTOOL_SFECPARAM: | |
2822 | rc = ethtool_set_fecparam(dev, useraddr); | |
2823 | break; | |
1da177e4 | 2824 | default: |
61a44b9c | 2825 | rc = -EOPNOTSUPP; |
1da177e4 | 2826 | } |
4ec93edb | 2827 | |
e71a4783 | 2828 | if (dev->ethtool_ops->complete) |
1da177e4 | 2829 | dev->ethtool_ops->complete(dev); |
d8a33ac4 SH |
2830 | |
2831 | if (old_features != dev->features) | |
2832 | netdev_features_change(dev); | |
2833 | ||
1da177e4 | 2834 | return rc; |
1da177e4 | 2835 | } |