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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> |
e679c9c1 | 25 | #include <linux/sfp.h> |
5a0e3ad6 | 26 | #include <linux/slab.h> |
68f512f2 | 27 | #include <linux/rtnetlink.h> |
174cd4b1 | 28 | #include <linux/sched/signal.h> |
960fb622 | 29 | #include <linux/net.h> |
1661d346 | 30 | #include <net/xdp_sock.h> |
1da177e4 | 31 | |
4ec93edb | 32 | /* |
1da177e4 LT |
33 | * Some useful ethtool_ops methods that're device independent. |
34 | * If we find that all drivers want to do the same thing here, | |
35 | * we can turn these into dev_() function calls. | |
36 | */ | |
37 | ||
38 | u32 ethtool_op_get_link(struct net_device *dev) | |
39 | { | |
40 | return netif_carrier_ok(dev) ? 1 : 0; | |
41 | } | |
97f8aefb | 42 | EXPORT_SYMBOL(ethtool_op_get_link); |
1da177e4 | 43 | |
02eacbd0 RC |
44 | int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info) |
45 | { | |
46 | info->so_timestamping = | |
47 | SOF_TIMESTAMPING_TX_SOFTWARE | | |
48 | SOF_TIMESTAMPING_RX_SOFTWARE | | |
49 | SOF_TIMESTAMPING_SOFTWARE; | |
50 | info->phc_index = -1; | |
51 | return 0; | |
52 | } | |
53 | EXPORT_SYMBOL(ethtool_op_get_ts_info); | |
54 | ||
1da177e4 LT |
55 | /* Handlers for each ethtool command */ |
56 | ||
475414f6 | 57 | #define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32) |
5455c699 | 58 | |
9d921549 MM |
59 | static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = { |
60 | [NETIF_F_SG_BIT] = "tx-scatter-gather", | |
61 | [NETIF_F_IP_CSUM_BIT] = "tx-checksum-ipv4", | |
9d921549 MM |
62 | [NETIF_F_HW_CSUM_BIT] = "tx-checksum-ip-generic", |
63 | [NETIF_F_IPV6_CSUM_BIT] = "tx-checksum-ipv6", | |
64 | [NETIF_F_HIGHDMA_BIT] = "highdma", | |
65 | [NETIF_F_FRAGLIST_BIT] = "tx-scatter-gather-fraglist", | |
788dfcac | 66 | [NETIF_F_HW_VLAN_CTAG_TX_BIT] = "tx-vlan-hw-insert", |
9d921549 | 67 | |
788dfcac FLVC |
68 | [NETIF_F_HW_VLAN_CTAG_RX_BIT] = "rx-vlan-hw-parse", |
69 | [NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-filter", | |
2d6577f1 DM |
70 | [NETIF_F_HW_VLAN_STAG_TX_BIT] = "tx-vlan-stag-hw-insert", |
71 | [NETIF_F_HW_VLAN_STAG_RX_BIT] = "rx-vlan-stag-hw-parse", | |
72 | [NETIF_F_HW_VLAN_STAG_FILTER_BIT] = "rx-vlan-stag-filter", | |
9d921549 MM |
73 | [NETIF_F_VLAN_CHALLENGED_BIT] = "vlan-challenged", |
74 | [NETIF_F_GSO_BIT] = "tx-generic-segmentation", | |
75 | [NETIF_F_LLTX_BIT] = "tx-lockless", | |
76 | [NETIF_F_NETNS_LOCAL_BIT] = "netns-local", | |
77 | [NETIF_F_GRO_BIT] = "rx-gro", | |
fb1f5f79 | 78 | [NETIF_F_GRO_HW_BIT] = "rx-gro-hw", |
9d921549 MM |
79 | [NETIF_F_LRO_BIT] = "rx-lro", |
80 | ||
81 | [NETIF_F_TSO_BIT] = "tx-tcp-segmentation", | |
9d921549 MM |
82 | [NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust", |
83 | [NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation", | |
cbc53e08 | 84 | [NETIF_F_TSO_MANGLEID_BIT] = "tx-tcp-mangleid-segmentation", |
9d921549 MM |
85 | [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation", |
86 | [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation", | |
68c33163 | 87 | [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation", |
518f213d | 88 | [NETIF_F_GSO_GRE_CSUM_BIT] = "tx-gre-csum-segmentation", |
7e13318d TH |
89 | [NETIF_F_GSO_IPXIP4_BIT] = "tx-ipxip4-segmentation", |
90 | [NETIF_F_GSO_IPXIP6_BIT] = "tx-ipxip6-segmentation", | |
73136267 | 91 | [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation", |
518f213d | 92 | [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation", |
802ab55a | 93 | [NETIF_F_GSO_PARTIAL_BIT] = "tx-gso-partial", |
90017acc | 94 | [NETIF_F_GSO_SCTP_BIT] = "tx-sctp-segmentation", |
c7ef8f0c | 95 | [NETIF_F_GSO_ESP_BIT] = "tx-esp-segmentation", |
83aa025f | 96 | [NETIF_F_GSO_UDP_L4_BIT] = "tx-udp-segmentation", |
9d921549 MM |
97 | |
98 | [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc", | |
53692b1d | 99 | [NETIF_F_SCTP_CRC_BIT] = "tx-checksum-sctp", |
9d921549 MM |
100 | [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu", |
101 | [NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter", | |
102 | [NETIF_F_RXHASH_BIT] = "rx-hashing", | |
103 | [NETIF_F_RXCSUM_BIT] = "rx-checksum", | |
104 | [NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy", | |
105 | [NETIF_F_LOOPBACK_BIT] = "loopback", | |
36eabda3 | 106 | [NETIF_F_RXFCS_BIT] = "rx-fcs", |
5e0c03c8 | 107 | [NETIF_F_RXALL_BIT] = "rx-all", |
a6cc0cfa | 108 | [NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload", |
1c78c64e | 109 | [NETIF_F_HW_TC_BIT] = "hw-tc-offload", |
c7ef8f0c SK |
110 | [NETIF_F_HW_ESP_BIT] = "esp-hw-offload", |
111 | [NETIF_F_HW_ESP_TX_CSUM_BIT] = "esp-tx-csum-hw-offload", | |
d764a122 | 112 | [NETIF_F_RX_UDP_TUNNEL_PORT_BIT] = "rx-udp_tunnel-port-offload", |
e0be6bea | 113 | [NETIF_F_HW_TLS_RECORD_BIT] = "tls-hw-record", |
2342a851 | 114 | [NETIF_F_HW_TLS_TX_BIT] = "tls-hw-tx-offload", |
14136564 | 115 | [NETIF_F_HW_TLS_RX_BIT] = "tls-hw-rx-offload", |
9d921549 MM |
116 | }; |
117 | ||
892311f6 EP |
118 | static const char |
119 | rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = { | |
120 | [ETH_RSS_HASH_TOP_BIT] = "toeplitz", | |
121 | [ETH_RSS_HASH_XOR_BIT] = "xor", | |
abb521e3 | 122 | [ETH_RSS_HASH_CRC32_BIT] = "crc32", |
892311f6 EP |
123 | }; |
124 | ||
a4244b0c HHZ |
125 | static const char |
126 | tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = { | |
127 | [ETHTOOL_ID_UNSPEC] = "Unspec", | |
128 | [ETHTOOL_RX_COPYBREAK] = "rx-copybreak", | |
129 | [ETHTOOL_TX_COPYBREAK] = "tx-copybreak", | |
e1577c1c | 130 | [ETHTOOL_PFC_PREVENTION_TOUT] = "pfc-prevention-tout", |
a4244b0c HHZ |
131 | }; |
132 | ||
968ad9da RL |
133 | static const char |
134 | phy_tunable_strings[__ETHTOOL_PHY_TUNABLE_COUNT][ETH_GSTRING_LEN] = { | |
135 | [ETHTOOL_ID_UNSPEC] = "Unspec", | |
65feddd5 | 136 | [ETHTOOL_PHY_DOWNSHIFT] = "phy-downshift", |
968ad9da RL |
137 | }; |
138 | ||
5455c699 MM |
139 | static int ethtool_get_features(struct net_device *dev, void __user *useraddr) |
140 | { | |
141 | struct ethtool_gfeatures cmd = { | |
142 | .cmd = ETHTOOL_GFEATURES, | |
143 | .size = ETHTOOL_DEV_FEATURE_WORDS, | |
144 | }; | |
475414f6 | 145 | struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; |
5455c699 MM |
146 | u32 __user *sizeaddr; |
147 | u32 copy_size; | |
475414f6 MM |
148 | int i; |
149 | ||
150 | /* in case feature bits run out again */ | |
09da71b1 | 151 | BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); |
475414f6 MM |
152 | |
153 | for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { | |
09da71b1 MM |
154 | features[i].available = (u32)(dev->hw_features >> (32 * i)); |
155 | features[i].requested = (u32)(dev->wanted_features >> (32 * i)); | |
156 | features[i].active = (u32)(dev->features >> (32 * i)); | |
157 | features[i].never_changed = | |
158 | (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); | |
475414f6 | 159 | } |
5455c699 MM |
160 | |
161 | sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); | |
162 | if (get_user(copy_size, sizeaddr)) | |
163 | return -EFAULT; | |
164 | ||
165 | if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) | |
166 | copy_size = ETHTOOL_DEV_FEATURE_WORDS; | |
167 | ||
168 | if (copy_to_user(useraddr, &cmd, sizeof(cmd))) | |
169 | return -EFAULT; | |
170 | useraddr += sizeof(cmd); | |
171 | if (copy_to_user(useraddr, features, copy_size * sizeof(*features))) | |
172 | return -EFAULT; | |
173 | ||
174 | return 0; | |
175 | } | |
176 | ||
177 | static int ethtool_set_features(struct net_device *dev, void __user *useraddr) | |
178 | { | |
179 | struct ethtool_sfeatures cmd; | |
180 | struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; | |
475414f6 MM |
181 | netdev_features_t wanted = 0, valid = 0; |
182 | int i, ret = 0; | |
5455c699 MM |
183 | |
184 | if (copy_from_user(&cmd, useraddr, sizeof(cmd))) | |
185 | return -EFAULT; | |
186 | useraddr += sizeof(cmd); | |
187 | ||
188 | if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) | |
189 | return -EINVAL; | |
190 | ||
191 | if (copy_from_user(features, useraddr, sizeof(features))) | |
192 | return -EFAULT; | |
193 | ||
475414f6 | 194 | for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { |
09da71b1 MM |
195 | valid |= (netdev_features_t)features[i].valid << (32 * i); |
196 | wanted |= (netdev_features_t)features[i].requested << (32 * i); | |
475414f6 MM |
197 | } |
198 | ||
199 | if (valid & ~NETIF_F_ETHTOOL_BITS) | |
5455c699 MM |
200 | return -EINVAL; |
201 | ||
475414f6 MM |
202 | if (valid & ~dev->hw_features) { |
203 | valid &= dev->hw_features; | |
5455c699 MM |
204 | ret |= ETHTOOL_F_UNSUPPORTED; |
205 | } | |
206 | ||
475414f6 MM |
207 | dev->wanted_features &= ~valid; |
208 | dev->wanted_features |= wanted & valid; | |
6cb6a27c | 209 | __netdev_update_features(dev); |
5455c699 | 210 | |
475414f6 | 211 | if ((dev->wanted_features ^ dev->features) & valid) |
5455c699 MM |
212 | ret |= ETHTOOL_F_WISH; |
213 | ||
214 | return ret; | |
215 | } | |
216 | ||
340ae165 MM |
217 | static int __ethtool_get_sset_count(struct net_device *dev, int sset) |
218 | { | |
219 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
220 | ||
5455c699 MM |
221 | if (sset == ETH_SS_FEATURES) |
222 | return ARRAY_SIZE(netdev_features_strings); | |
223 | ||
892311f6 EP |
224 | if (sset == ETH_SS_RSS_HASH_FUNCS) |
225 | return ARRAY_SIZE(rss_hash_func_strings); | |
226 | ||
a4244b0c HHZ |
227 | if (sset == ETH_SS_TUNABLES) |
228 | return ARRAY_SIZE(tunable_strings); | |
229 | ||
968ad9da RL |
230 | if (sset == ETH_SS_PHY_TUNABLES) |
231 | return ARRAY_SIZE(phy_tunable_strings); | |
232 | ||
99943382 FF |
233 | if (sset == ETH_SS_PHY_STATS && dev->phydev && |
234 | !ops->get_ethtool_phy_stats) | |
235 | return phy_ethtool_get_sset_count(dev->phydev); | |
f3a40945 | 236 | |
c03a14e8 | 237 | if (ops->get_sset_count && ops->get_strings) |
340ae165 MM |
238 | return ops->get_sset_count(dev, sset); |
239 | else | |
240 | return -EOPNOTSUPP; | |
241 | } | |
242 | ||
243 | static void __ethtool_get_strings(struct net_device *dev, | |
244 | u32 stringset, u8 *data) | |
245 | { | |
246 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
247 | ||
5455c699 MM |
248 | if (stringset == ETH_SS_FEATURES) |
249 | memcpy(data, netdev_features_strings, | |
250 | sizeof(netdev_features_strings)); | |
892311f6 EP |
251 | else if (stringset == ETH_SS_RSS_HASH_FUNCS) |
252 | memcpy(data, rss_hash_func_strings, | |
253 | sizeof(rss_hash_func_strings)); | |
a4244b0c HHZ |
254 | else if (stringset == ETH_SS_TUNABLES) |
255 | memcpy(data, tunable_strings, sizeof(tunable_strings)); | |
968ad9da RL |
256 | else if (stringset == ETH_SS_PHY_TUNABLES) |
257 | memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); | |
99943382 FF |
258 | else if (stringset == ETH_SS_PHY_STATS && dev->phydev && |
259 | !ops->get_ethtool_phy_stats) | |
260 | phy_ethtool_get_strings(dev->phydev, data); | |
261 | else | |
5455c699 MM |
262 | /* ops->get_strings is valid because checked earlier */ |
263 | ops->get_strings(dev, stringset, data); | |
340ae165 MM |
264 | } |
265 | ||
c8f44aff | 266 | static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) |
0a417704 MM |
267 | { |
268 | /* feature masks of legacy discrete ethtool ops */ | |
269 | ||
270 | switch (eth_cmd) { | |
271 | case ETHTOOL_GTXCSUM: | |
272 | case ETHTOOL_STXCSUM: | |
a188222b | 273 | return NETIF_F_CSUM_MASK | NETIF_F_SCTP_CRC; |
e83d360d MM |
274 | case ETHTOOL_GRXCSUM: |
275 | case ETHTOOL_SRXCSUM: | |
276 | return NETIF_F_RXCSUM; | |
0a417704 MM |
277 | case ETHTOOL_GSG: |
278 | case ETHTOOL_SSG: | |
279 | return NETIF_F_SG; | |
280 | case ETHTOOL_GTSO: | |
281 | case ETHTOOL_STSO: | |
282 | return NETIF_F_ALL_TSO; | |
0a417704 MM |
283 | case ETHTOOL_GGSO: |
284 | case ETHTOOL_SGSO: | |
285 | return NETIF_F_GSO; | |
286 | case ETHTOOL_GGRO: | |
287 | case ETHTOOL_SGRO: | |
288 | return NETIF_F_GRO; | |
289 | default: | |
290 | BUG(); | |
291 | } | |
292 | } | |
293 | ||
0a417704 MM |
294 | static int ethtool_get_one_feature(struct net_device *dev, |
295 | char __user *useraddr, u32 ethcmd) | |
296 | { | |
c8f44aff | 297 | netdev_features_t mask = ethtool_get_feature_mask(ethcmd); |
0a417704 MM |
298 | struct ethtool_value edata = { |
299 | .cmd = ethcmd, | |
86794881 | 300 | .data = !!(dev->features & mask), |
0a417704 | 301 | }; |
0a417704 | 302 | |
0a417704 MM |
303 | if (copy_to_user(useraddr, &edata, sizeof(edata))) |
304 | return -EFAULT; | |
305 | return 0; | |
306 | } | |
307 | ||
0a417704 MM |
308 | static int ethtool_set_one_feature(struct net_device *dev, |
309 | void __user *useraddr, u32 ethcmd) | |
310 | { | |
311 | struct ethtool_value edata; | |
c8f44aff | 312 | netdev_features_t mask; |
0a417704 MM |
313 | |
314 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
315 | return -EFAULT; | |
316 | ||
86794881 MM |
317 | mask = ethtool_get_feature_mask(ethcmd); |
318 | mask &= dev->hw_features; | |
bc5787c6 MM |
319 | if (!mask) |
320 | return -EOPNOTSUPP; | |
86794881 | 321 | |
bc5787c6 MM |
322 | if (edata.data) |
323 | dev->wanted_features |= mask; | |
324 | else | |
325 | dev->wanted_features &= ~mask; | |
86794881 | 326 | |
bc5787c6 | 327 | __netdev_update_features(dev); |
86794881 | 328 | |
bc5787c6 MM |
329 | return 0; |
330 | } | |
331 | ||
02b3a552 MM |
332 | #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ |
333 | ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) | |
f646968f PM |
334 | #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ |
335 | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ | |
336 | NETIF_F_RXHASH) | |
bc5787c6 MM |
337 | |
338 | static u32 __ethtool_get_flags(struct net_device *dev) | |
339 | { | |
02b3a552 MM |
340 | u32 flags = 0; |
341 | ||
8a73125c DF |
342 | if (dev->features & NETIF_F_LRO) |
343 | flags |= ETH_FLAG_LRO; | |
344 | if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) | |
345 | flags |= ETH_FLAG_RXVLAN; | |
346 | if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) | |
347 | flags |= ETH_FLAG_TXVLAN; | |
348 | if (dev->features & NETIF_F_NTUPLE) | |
349 | flags |= ETH_FLAG_NTUPLE; | |
350 | if (dev->features & NETIF_F_RXHASH) | |
351 | flags |= ETH_FLAG_RXHASH; | |
02b3a552 MM |
352 | |
353 | return flags; | |
0a417704 MM |
354 | } |
355 | ||
bc5787c6 | 356 | static int __ethtool_set_flags(struct net_device *dev, u32 data) |
da8ac86c | 357 | { |
c8f44aff | 358 | netdev_features_t features = 0, changed; |
da8ac86c | 359 | |
02b3a552 | 360 | if (data & ~ETH_ALL_FLAGS) |
da8ac86c MM |
361 | return -EINVAL; |
362 | ||
8a73125c DF |
363 | if (data & ETH_FLAG_LRO) |
364 | features |= NETIF_F_LRO; | |
365 | if (data & ETH_FLAG_RXVLAN) | |
366 | features |= NETIF_F_HW_VLAN_CTAG_RX; | |
367 | if (data & ETH_FLAG_TXVLAN) | |
368 | features |= NETIF_F_HW_VLAN_CTAG_TX; | |
369 | if (data & ETH_FLAG_NTUPLE) | |
370 | features |= NETIF_F_NTUPLE; | |
371 | if (data & ETH_FLAG_RXHASH) | |
372 | features |= NETIF_F_RXHASH; | |
02b3a552 | 373 | |
da8ac86c | 374 | /* allow changing only bits set in hw_features */ |
02b3a552 | 375 | changed = (features ^ dev->features) & ETH_ALL_FEATURES; |
da8ac86c MM |
376 | if (changed & ~dev->hw_features) |
377 | return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; | |
378 | ||
379 | dev->wanted_features = | |
02b3a552 | 380 | (dev->wanted_features & ~changed) | (features & changed); |
da8ac86c | 381 | |
6cb6a27c | 382 | __netdev_update_features(dev); |
da8ac86c MM |
383 | |
384 | return 0; | |
385 | } | |
386 | ||
5a6cd6de AB |
387 | /* Given two link masks, AND them together and save the result in dst. */ |
388 | void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, | |
389 | struct ethtool_link_ksettings *src) | |
390 | { | |
391 | unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); | |
392 | unsigned int idx = 0; | |
393 | ||
394 | for (; idx < size; idx++) { | |
395 | dst->link_modes.supported[idx] &= | |
396 | src->link_modes.supported[idx]; | |
397 | dst->link_modes.advertising[idx] &= | |
398 | src->link_modes.advertising[idx]; | |
399 | } | |
400 | } | |
401 | EXPORT_SYMBOL(ethtool_intersect_link_masks); | |
402 | ||
6d62b4d5 PR |
403 | void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, |
404 | u32 legacy_u32) | |
3f1ac7a7 DD |
405 | { |
406 | bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS); | |
407 | dst[0] = legacy_u32; | |
408 | } | |
6d62b4d5 | 409 | EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); |
3f1ac7a7 DD |
410 | |
411 | /* return false if src had higher bits set. lower bits always updated. */ | |
6d62b4d5 PR |
412 | bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, |
413 | const unsigned long *src) | |
3f1ac7a7 DD |
414 | { |
415 | bool retval = true; | |
416 | ||
417 | /* TODO: following test will soon always be true */ | |
418 | if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) { | |
419 | __ETHTOOL_DECLARE_LINK_MODE_MASK(ext); | |
420 | ||
421 | bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS); | |
422 | bitmap_fill(ext, 32); | |
423 | bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS); | |
424 | if (bitmap_intersects(ext, src, | |
425 | __ETHTOOL_LINK_MODE_MASK_NBITS)) { | |
426 | /* src mask goes beyond bit 31 */ | |
427 | retval = false; | |
428 | } | |
429 | } | |
430 | *legacy_u32 = src[0]; | |
431 | return retval; | |
432 | } | |
6d62b4d5 | 433 | EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); |
3f1ac7a7 DD |
434 | |
435 | /* return false if legacy contained non-0 deprecated fields | |
95491e3c | 436 | * maxtxpkt/maxrxpkt. rest of ksettings always updated |
3f1ac7a7 DD |
437 | */ |
438 | static bool | |
439 | convert_legacy_settings_to_link_ksettings( | |
440 | struct ethtool_link_ksettings *link_ksettings, | |
441 | const struct ethtool_cmd *legacy_settings) | |
442 | { | |
443 | bool retval = true; | |
444 | ||
445 | memset(link_ksettings, 0, sizeof(*link_ksettings)); | |
446 | ||
447 | /* This is used to tell users that driver is still using these | |
448 | * deprecated legacy fields, and they should not use | |
449 | * %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS | |
450 | */ | |
95491e3c | 451 | if (legacy_settings->maxtxpkt || |
3f1ac7a7 DD |
452 | legacy_settings->maxrxpkt) |
453 | retval = false; | |
454 | ||
6d62b4d5 | 455 | ethtool_convert_legacy_u32_to_link_mode( |
3f1ac7a7 DD |
456 | link_ksettings->link_modes.supported, |
457 | legacy_settings->supported); | |
6d62b4d5 | 458 | ethtool_convert_legacy_u32_to_link_mode( |
3f1ac7a7 DD |
459 | link_ksettings->link_modes.advertising, |
460 | legacy_settings->advertising); | |
6d62b4d5 | 461 | ethtool_convert_legacy_u32_to_link_mode( |
3f1ac7a7 DD |
462 | link_ksettings->link_modes.lp_advertising, |
463 | legacy_settings->lp_advertising); | |
464 | link_ksettings->base.speed | |
465 | = ethtool_cmd_speed(legacy_settings); | |
466 | link_ksettings->base.duplex | |
467 | = legacy_settings->duplex; | |
468 | link_ksettings->base.port | |
469 | = legacy_settings->port; | |
470 | link_ksettings->base.phy_address | |
471 | = legacy_settings->phy_address; | |
472 | link_ksettings->base.autoneg | |
473 | = legacy_settings->autoneg; | |
474 | link_ksettings->base.mdio_support | |
475 | = legacy_settings->mdio_support; | |
476 | link_ksettings->base.eth_tp_mdix | |
477 | = legacy_settings->eth_tp_mdix; | |
478 | link_ksettings->base.eth_tp_mdix_ctrl | |
479 | = legacy_settings->eth_tp_mdix_ctrl; | |
480 | return retval; | |
481 | } | |
482 | ||
483 | /* return false if ksettings link modes had higher bits | |
484 | * set. legacy_settings always updated (best effort) | |
485 | */ | |
486 | static bool | |
487 | convert_link_ksettings_to_legacy_settings( | |
488 | struct ethtool_cmd *legacy_settings, | |
489 | const struct ethtool_link_ksettings *link_ksettings) | |
490 | { | |
491 | bool retval = true; | |
492 | ||
493 | memset(legacy_settings, 0, sizeof(*legacy_settings)); | |
494 | /* this also clears the deprecated fields in legacy structure: | |
495 | * __u8 transceiver; | |
496 | * __u32 maxtxpkt; | |
497 | * __u32 maxrxpkt; | |
498 | */ | |
499 | ||
6d62b4d5 | 500 | retval &= ethtool_convert_link_mode_to_legacy_u32( |
3f1ac7a7 DD |
501 | &legacy_settings->supported, |
502 | link_ksettings->link_modes.supported); | |
6d62b4d5 | 503 | retval &= ethtool_convert_link_mode_to_legacy_u32( |
3f1ac7a7 DD |
504 | &legacy_settings->advertising, |
505 | link_ksettings->link_modes.advertising); | |
6d62b4d5 | 506 | retval &= ethtool_convert_link_mode_to_legacy_u32( |
3f1ac7a7 DD |
507 | &legacy_settings->lp_advertising, |
508 | link_ksettings->link_modes.lp_advertising); | |
509 | ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); | |
510 | legacy_settings->duplex | |
511 | = link_ksettings->base.duplex; | |
512 | legacy_settings->port | |
513 | = link_ksettings->base.port; | |
514 | legacy_settings->phy_address | |
515 | = link_ksettings->base.phy_address; | |
516 | legacy_settings->autoneg | |
517 | = link_ksettings->base.autoneg; | |
518 | legacy_settings->mdio_support | |
519 | = link_ksettings->base.mdio_support; | |
520 | legacy_settings->eth_tp_mdix | |
521 | = link_ksettings->base.eth_tp_mdix; | |
522 | legacy_settings->eth_tp_mdix_ctrl | |
523 | = link_ksettings->base.eth_tp_mdix_ctrl; | |
19cab887 FF |
524 | legacy_settings->transceiver |
525 | = link_ksettings->base.transceiver; | |
3f1ac7a7 DD |
526 | return retval; |
527 | } | |
528 | ||
529 | /* number of 32-bit words to store the user's link mode bitmaps */ | |
530 | #define __ETHTOOL_LINK_MODE_MASK_NU32 \ | |
531 | DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) | |
532 | ||
533 | /* layout of the struct passed from/to userland */ | |
534 | struct ethtool_link_usettings { | |
535 | struct ethtool_link_settings base; | |
536 | struct { | |
537 | __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; | |
538 | __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; | |
539 | __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; | |
540 | } link_modes; | |
541 | }; | |
542 | ||
9b300495 | 543 | /* Internal kernel helper to query a device ethtool_link_settings. */ |
3f1ac7a7 DD |
544 | int __ethtool_get_link_ksettings(struct net_device *dev, |
545 | struct ethtool_link_ksettings *link_ksettings) | |
546 | { | |
3f1ac7a7 DD |
547 | ASSERT_RTNL(); |
548 | ||
9b300495 | 549 | if (!dev->ethtool_ops->get_link_ksettings) |
3237fc63 DD |
550 | return -EOPNOTSUPP; |
551 | ||
9b300495 MK |
552 | memset(link_ksettings, 0, sizeof(*link_ksettings)); |
553 | return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings); | |
3f1ac7a7 DD |
554 | } |
555 | EXPORT_SYMBOL(__ethtool_get_link_ksettings); | |
556 | ||
557 | /* convert ethtool_link_usettings in user space to a kernel internal | |
558 | * ethtool_link_ksettings. return 0 on success, errno on error. | |
559 | */ | |
560 | static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, | |
561 | const void __user *from) | |
562 | { | |
563 | struct ethtool_link_usettings link_usettings; | |
564 | ||
565 | if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) | |
566 | return -EFAULT; | |
567 | ||
568 | memcpy(&to->base, &link_usettings.base, sizeof(to->base)); | |
3aa56885 YN |
569 | bitmap_from_arr32(to->link_modes.supported, |
570 | link_usettings.link_modes.supported, | |
571 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
572 | bitmap_from_arr32(to->link_modes.advertising, | |
573 | link_usettings.link_modes.advertising, | |
574 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
575 | bitmap_from_arr32(to->link_modes.lp_advertising, | |
576 | link_usettings.link_modes.lp_advertising, | |
577 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
3f1ac7a7 DD |
578 | |
579 | return 0; | |
580 | } | |
581 | ||
582 | /* convert a kernel internal ethtool_link_ksettings to | |
583 | * ethtool_link_usettings in user space. return 0 on success, errno on | |
584 | * error. | |
585 | */ | |
586 | static int | |
587 | store_link_ksettings_for_user(void __user *to, | |
588 | const struct ethtool_link_ksettings *from) | |
589 | { | |
590 | struct ethtool_link_usettings link_usettings; | |
591 | ||
592 | memcpy(&link_usettings.base, &from->base, sizeof(link_usettings)); | |
3aa56885 YN |
593 | bitmap_to_arr32(link_usettings.link_modes.supported, |
594 | from->link_modes.supported, | |
595 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
596 | bitmap_to_arr32(link_usettings.link_modes.advertising, | |
597 | from->link_modes.advertising, | |
598 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
599 | bitmap_to_arr32(link_usettings.link_modes.lp_advertising, | |
600 | from->link_modes.lp_advertising, | |
601 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
3f1ac7a7 DD |
602 | |
603 | if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) | |
604 | return -EFAULT; | |
605 | ||
606 | return 0; | |
607 | } | |
608 | ||
9b300495 | 609 | /* Query device for its ethtool_link_settings. */ |
3f1ac7a7 DD |
610 | static int ethtool_get_link_ksettings(struct net_device *dev, |
611 | void __user *useraddr) | |
612 | { | |
613 | int err = 0; | |
614 | struct ethtool_link_ksettings link_ksettings; | |
615 | ||
616 | ASSERT_RTNL(); | |
3f1ac7a7 DD |
617 | if (!dev->ethtool_ops->get_link_ksettings) |
618 | return -EOPNOTSUPP; | |
619 | ||
620 | /* handle bitmap nbits handshake */ | |
621 | if (copy_from_user(&link_ksettings.base, useraddr, | |
622 | sizeof(link_ksettings.base))) | |
623 | return -EFAULT; | |
624 | ||
625 | if (__ETHTOOL_LINK_MODE_MASK_NU32 | |
626 | != link_ksettings.base.link_mode_masks_nwords) { | |
627 | /* wrong link mode nbits requested */ | |
628 | memset(&link_ksettings, 0, sizeof(link_ksettings)); | |
793cf87d | 629 | link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; |
3f1ac7a7 DD |
630 | /* send back number of words required as negative val */ |
631 | compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, | |
632 | "need too many bits for link modes!"); | |
633 | link_ksettings.base.link_mode_masks_nwords | |
634 | = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); | |
635 | ||
636 | /* copy the base fields back to user, not the link | |
637 | * mode bitmaps | |
638 | */ | |
639 | if (copy_to_user(useraddr, &link_ksettings.base, | |
640 | sizeof(link_ksettings.base))) | |
641 | return -EFAULT; | |
642 | ||
643 | return 0; | |
644 | } | |
645 | ||
646 | /* handshake successful: user/kernel agree on | |
647 | * link_mode_masks_nwords | |
648 | */ | |
649 | ||
650 | memset(&link_ksettings, 0, sizeof(link_ksettings)); | |
651 | err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); | |
652 | if (err < 0) | |
653 | return err; | |
654 | ||
655 | /* make sure we tell the right values to user */ | |
656 | link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; | |
657 | link_ksettings.base.link_mode_masks_nwords | |
658 | = __ETHTOOL_LINK_MODE_MASK_NU32; | |
659 | ||
660 | return store_link_ksettings_for_user(useraddr, &link_ksettings); | |
661 | } | |
662 | ||
9b300495 | 663 | /* Update device ethtool_link_settings. */ |
3f1ac7a7 DD |
664 | static int ethtool_set_link_ksettings(struct net_device *dev, |
665 | void __user *useraddr) | |
666 | { | |
667 | int err; | |
668 | struct ethtool_link_ksettings link_ksettings; | |
669 | ||
670 | ASSERT_RTNL(); | |
671 | ||
672 | if (!dev->ethtool_ops->set_link_ksettings) | |
673 | return -EOPNOTSUPP; | |
674 | ||
675 | /* make sure nbits field has expected value */ | |
676 | if (copy_from_user(&link_ksettings.base, useraddr, | |
677 | sizeof(link_ksettings.base))) | |
678 | return -EFAULT; | |
679 | ||
680 | if (__ETHTOOL_LINK_MODE_MASK_NU32 | |
681 | != link_ksettings.base.link_mode_masks_nwords) | |
682 | return -EINVAL; | |
683 | ||
684 | /* copy the whole structure, now that we know it has expected | |
685 | * format | |
686 | */ | |
687 | err = load_link_ksettings_from_user(&link_ksettings, useraddr); | |
688 | if (err) | |
689 | return err; | |
690 | ||
691 | /* re-check nwords field, just in case */ | |
692 | if (__ETHTOOL_LINK_MODE_MASK_NU32 | |
693 | != link_ksettings.base.link_mode_masks_nwords) | |
694 | return -EINVAL; | |
695 | ||
696 | return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); | |
697 | } | |
698 | ||
3f1ac7a7 DD |
699 | /* Query device for its ethtool_cmd settings. |
700 | * | |
9b300495 MK |
701 | * Backward compatibility note: for compatibility with legacy ethtool, this is |
702 | * now implemented via get_link_ksettings. When driver reports higher link mode | |
703 | * bits, a kernel warning is logged once (with name of 1st driver/device) to | |
704 | * recommend user to upgrade ethtool, but the command is successful (only the | |
705 | * lower link mode bits reported back to user). Deprecated fields from | |
706 | * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero. | |
3f1ac7a7 | 707 | */ |
4bc71cb9 JP |
708 | static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) |
709 | { | |
9b300495 | 710 | struct ethtool_link_ksettings link_ksettings; |
4bc71cb9 | 711 | struct ethtool_cmd cmd; |
9b300495 | 712 | int err; |
4bc71cb9 | 713 | |
3f1ac7a7 | 714 | ASSERT_RTNL(); |
9b300495 MK |
715 | if (!dev->ethtool_ops->get_link_ksettings) |
716 | return -EOPNOTSUPP; | |
3f1ac7a7 | 717 | |
9b300495 MK |
718 | memset(&link_ksettings, 0, sizeof(link_ksettings)); |
719 | err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); | |
720 | if (err < 0) | |
721 | return err; | |
722 | convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings); | |
3237fc63 | 723 | |
9b300495 MK |
724 | /* send a sensible cmd tag back to user */ |
725 | cmd.cmd = ETHTOOL_GSET; | |
1da177e4 LT |
726 | |
727 | if (copy_to_user(useraddr, &cmd, sizeof(cmd))) | |
728 | return -EFAULT; | |
3f1ac7a7 | 729 | |
1da177e4 LT |
730 | return 0; |
731 | } | |
732 | ||
3f1ac7a7 DD |
733 | /* Update device link settings with given ethtool_cmd. |
734 | * | |
9b300495 MK |
735 | * Backward compatibility note: for compatibility with legacy ethtool, this is |
736 | * now always implemented via set_link_settings. When user's request updates | |
737 | * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel | |
738 | * warning is logged once (with name of 1st driver/device) to recommend user to | |
739 | * upgrade ethtool, and the request is rejected. | |
3f1ac7a7 | 740 | */ |
1da177e4 LT |
741 | static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) |
742 | { | |
9b300495 | 743 | struct ethtool_link_ksettings link_ksettings; |
1da177e4 LT |
744 | struct ethtool_cmd cmd; |
745 | ||
3f1ac7a7 | 746 | ASSERT_RTNL(); |
1da177e4 LT |
747 | |
748 | if (copy_from_user(&cmd, useraddr, sizeof(cmd))) | |
749 | return -EFAULT; | |
9b300495 | 750 | if (!dev->ethtool_ops->set_link_ksettings) |
3f1ac7a7 DD |
751 | return -EOPNOTSUPP; |
752 | ||
9b300495 MK |
753 | if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd)) |
754 | return -EINVAL; | |
755 | link_ksettings.base.link_mode_masks_nwords = | |
756 | __ETHTOOL_LINK_MODE_MASK_NU32; | |
757 | return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); | |
1da177e4 LT |
758 | } |
759 | ||
97f8aefb | 760 | static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev, |
761 | void __user *useraddr) | |
1da177e4 LT |
762 | { |
763 | struct ethtool_drvinfo info; | |
76fd8593 | 764 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 765 | |
1da177e4 LT |
766 | memset(&info, 0, sizeof(info)); |
767 | info.cmd = ETHTOOL_GDRVINFO; | |
c03a14e8 | 768 | if (ops->get_drvinfo) { |
01414802 BH |
769 | ops->get_drvinfo(dev, &info); |
770 | } else if (dev->dev.parent && dev->dev.parent->driver) { | |
771 | strlcpy(info.bus_info, dev_name(dev->dev.parent), | |
772 | sizeof(info.bus_info)); | |
773 | strlcpy(info.driver, dev->dev.parent->driver->name, | |
774 | sizeof(info.driver)); | |
775 | } else { | |
776 | return -EOPNOTSUPP; | |
777 | } | |
1da177e4 | 778 | |
723b2f57 JG |
779 | /* |
780 | * this method of obtaining string set info is deprecated; | |
d17792eb | 781 | * Use ETHTOOL_GSSET_INFO instead. |
723b2f57 | 782 | */ |
c03a14e8 | 783 | if (ops->get_sset_count) { |
ff03d49f JG |
784 | int rc; |
785 | ||
786 | rc = ops->get_sset_count(dev, ETH_SS_TEST); | |
787 | if (rc >= 0) | |
788 | info.testinfo_len = rc; | |
789 | rc = ops->get_sset_count(dev, ETH_SS_STATS); | |
790 | if (rc >= 0) | |
791 | info.n_stats = rc; | |
339bf024 JG |
792 | rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); |
793 | if (rc >= 0) | |
794 | info.n_priv_flags = rc; | |
ff03d49f | 795 | } |
f9fc54d3 YL |
796 | if (ops->get_regs_len) { |
797 | int ret = ops->get_regs_len(dev); | |
798 | ||
799 | if (ret > 0) | |
800 | info.regdump_len = ret; | |
801 | } | |
802 | ||
c03a14e8 | 803 | if (ops->get_eeprom_len) |
1da177e4 LT |
804 | info.eedump_len = ops->get_eeprom_len(dev); |
805 | ||
806 | if (copy_to_user(useraddr, &info, sizeof(info))) | |
807 | return -EFAULT; | |
808 | return 0; | |
809 | } | |
810 | ||
f5c445ed | 811 | static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, |
97f8aefb | 812 | void __user *useraddr) |
723b2f57 JG |
813 | { |
814 | struct ethtool_sset_info info; | |
723b2f57 JG |
815 | u64 sset_mask; |
816 | int i, idx = 0, n_bits = 0, ret, rc; | |
817 | u32 *info_buf = NULL; | |
818 | ||
723b2f57 JG |
819 | if (copy_from_user(&info, useraddr, sizeof(info))) |
820 | return -EFAULT; | |
821 | ||
822 | /* store copy of mask, because we zero struct later on */ | |
823 | sset_mask = info.sset_mask; | |
824 | if (!sset_mask) | |
825 | return 0; | |
826 | ||
827 | /* calculate size of return buffer */ | |
d17792eb | 828 | n_bits = hweight64(sset_mask); |
723b2f57 JG |
829 | |
830 | memset(&info, 0, sizeof(info)); | |
831 | info.cmd = ETHTOOL_GSSET_INFO; | |
832 | ||
6396bb22 | 833 | info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER); |
723b2f57 JG |
834 | if (!info_buf) |
835 | return -ENOMEM; | |
836 | ||
837 | /* | |
838 | * fill return buffer based on input bitmask and successful | |
839 | * get_sset_count return | |
840 | */ | |
841 | for (i = 0; i < 64; i++) { | |
842 | if (!(sset_mask & (1ULL << i))) | |
843 | continue; | |
844 | ||
340ae165 | 845 | rc = __ethtool_get_sset_count(dev, i); |
723b2f57 JG |
846 | if (rc >= 0) { |
847 | info.sset_mask |= (1ULL << i); | |
848 | info_buf[idx++] = rc; | |
849 | } | |
850 | } | |
851 | ||
852 | ret = -EFAULT; | |
853 | if (copy_to_user(useraddr, &info, sizeof(info))) | |
854 | goto out; | |
855 | ||
856 | useraddr += offsetof(struct ethtool_sset_info, data); | |
857 | if (copy_to_user(useraddr, info_buf, idx * sizeof(u32))) | |
858 | goto out; | |
859 | ||
860 | ret = 0; | |
861 | ||
862 | out: | |
863 | kfree(info_buf); | |
864 | return ret; | |
865 | } | |
866 | ||
97f8aefb | 867 | static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, |
bf988435 | 868 | u32 cmd, void __user *useraddr) |
0853ad66 | 869 | { |
bf988435 BH |
870 | struct ethtool_rxnfc info; |
871 | size_t info_size = sizeof(info); | |
55664f32 | 872 | int rc; |
0853ad66 | 873 | |
59089d8d | 874 | if (!dev->ethtool_ops->set_rxnfc) |
0853ad66 SB |
875 | return -EOPNOTSUPP; |
876 | ||
bf988435 BH |
877 | /* struct ethtool_rxnfc was originally defined for |
878 | * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data | |
879 | * members. User-space might still be using that | |
880 | * definition. */ | |
881 | if (cmd == ETHTOOL_SRXFH) | |
882 | info_size = (offsetof(struct ethtool_rxnfc, data) + | |
883 | sizeof(info.data)); | |
884 | ||
885 | if (copy_from_user(&info, useraddr, info_size)) | |
0853ad66 SB |
886 | return -EFAULT; |
887 | ||
55664f32 BH |
888 | rc = dev->ethtool_ops->set_rxnfc(dev, &info); |
889 | if (rc) | |
890 | return rc; | |
891 | ||
892 | if (cmd == ETHTOOL_SRXCLSRLINS && | |
893 | copy_to_user(useraddr, &info, info_size)) | |
894 | return -EFAULT; | |
895 | ||
896 | return 0; | |
0853ad66 SB |
897 | } |
898 | ||
97f8aefb | 899 | static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, |
bf988435 | 900 | u32 cmd, void __user *useraddr) |
0853ad66 SB |
901 | { |
902 | struct ethtool_rxnfc info; | |
bf988435 | 903 | size_t info_size = sizeof(info); |
59089d8d SB |
904 | const struct ethtool_ops *ops = dev->ethtool_ops; |
905 | int ret; | |
906 | void *rule_buf = NULL; | |
0853ad66 | 907 | |
59089d8d | 908 | if (!ops->get_rxnfc) |
0853ad66 SB |
909 | return -EOPNOTSUPP; |
910 | ||
bf988435 BH |
911 | /* struct ethtool_rxnfc was originally defined for |
912 | * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data | |
913 | * members. User-space might still be using that | |
914 | * definition. */ | |
915 | if (cmd == ETHTOOL_GRXFH) | |
916 | info_size = (offsetof(struct ethtool_rxnfc, data) + | |
917 | sizeof(info.data)); | |
918 | ||
919 | if (copy_from_user(&info, useraddr, info_size)) | |
0853ad66 SB |
920 | return -EFAULT; |
921 | ||
84a1d9c4 EC |
922 | /* If FLOW_RSS was requested then user-space must be using the |
923 | * new definition, as FLOW_RSS is newer. | |
924 | */ | |
925 | if (cmd == ETHTOOL_GRXFH && info.flow_type & FLOW_RSS) { | |
926 | info_size = sizeof(info); | |
927 | if (copy_from_user(&info, useraddr, info_size)) | |
928 | return -EFAULT; | |
d656fe49 WW |
929 | /* Since malicious users may modify the original data, |
930 | * we need to check whether FLOW_RSS is still requested. | |
931 | */ | |
932 | if (!(info.flow_type & FLOW_RSS)) | |
933 | return -EINVAL; | |
84a1d9c4 EC |
934 | } |
935 | ||
2bb3207d WW |
936 | if (info.cmd != cmd) |
937 | return -EINVAL; | |
938 | ||
59089d8d SB |
939 | if (info.cmd == ETHTOOL_GRXCLSRLALL) { |
940 | if (info.rule_cnt > 0) { | |
db048b69 | 941 | if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) |
6396bb22 | 942 | rule_buf = kcalloc(info.rule_cnt, sizeof(u32), |
db048b69 | 943 | GFP_USER); |
59089d8d SB |
944 | if (!rule_buf) |
945 | return -ENOMEM; | |
946 | } | |
947 | } | |
0853ad66 | 948 | |
59089d8d SB |
949 | ret = ops->get_rxnfc(dev, &info, rule_buf); |
950 | if (ret < 0) | |
951 | goto err_out; | |
952 | ||
953 | ret = -EFAULT; | |
bf988435 | 954 | if (copy_to_user(useraddr, &info, info_size)) |
59089d8d SB |
955 | goto err_out; |
956 | ||
957 | if (rule_buf) { | |
958 | useraddr += offsetof(struct ethtool_rxnfc, rule_locs); | |
959 | if (copy_to_user(useraddr, rule_buf, | |
960 | info.rule_cnt * sizeof(u32))) | |
961 | goto err_out; | |
962 | } | |
963 | ret = 0; | |
964 | ||
965 | err_out: | |
c9caceca | 966 | kfree(rule_buf); |
59089d8d SB |
967 | |
968 | return ret; | |
0853ad66 SB |
969 | } |
970 | ||
3de0b592 VD |
971 | static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, |
972 | struct ethtool_rxnfc *rx_rings, | |
973 | u32 size) | |
974 | { | |
fb95cd8d | 975 | int i; |
3de0b592 VD |
976 | |
977 | if (copy_from_user(indir, useraddr, size * sizeof(indir[0]))) | |
fb95cd8d | 978 | return -EFAULT; |
3de0b592 VD |
979 | |
980 | /* Validate ring indices */ | |
fb95cd8d BH |
981 | for (i = 0; i < size; i++) |
982 | if (indir[i] >= rx_rings->data) | |
983 | return -EINVAL; | |
984 | ||
985 | return 0; | |
3de0b592 VD |
986 | } |
987 | ||
ba905f5e | 988 | u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; |
960fb622 ED |
989 | |
990 | void netdev_rss_key_fill(void *buffer, size_t len) | |
991 | { | |
992 | BUG_ON(len > sizeof(netdev_rss_key)); | |
993 | net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); | |
994 | memcpy(buffer, netdev_rss_key, len); | |
995 | } | |
996 | EXPORT_SYMBOL(netdev_rss_key_fill); | |
997 | ||
d4ab4286 KJ |
998 | static int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max) |
999 | { | |
1000 | u32 dev_size, current_max = 0; | |
1001 | u32 *indir; | |
1002 | int ret; | |
1003 | ||
1004 | if (!dev->ethtool_ops->get_rxfh_indir_size || | |
1005 | !dev->ethtool_ops->get_rxfh) | |
1006 | return -EOPNOTSUPP; | |
1007 | dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev); | |
1008 | if (dev_size == 0) | |
1009 | return -EOPNOTSUPP; | |
1010 | ||
1011 | indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); | |
1012 | if (!indir) | |
1013 | return -ENOMEM; | |
1014 | ||
1015 | ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL); | |
1016 | if (ret) | |
1017 | goto out; | |
1018 | ||
1019 | while (dev_size--) | |
1020 | current_max = max(current_max, indir[dev_size]); | |
1021 | ||
1022 | *max = current_max; | |
1023 | ||
1024 | out: | |
1025 | kfree(indir); | |
1026 | return ret; | |
1027 | } | |
1028 | ||
a5b6ee29 BH |
1029 | static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, |
1030 | void __user *useraddr) | |
1031 | { | |
7850f63f BH |
1032 | u32 user_size, dev_size; |
1033 | u32 *indir; | |
a5b6ee29 BH |
1034 | int ret; |
1035 | ||
7850f63f | 1036 | if (!dev->ethtool_ops->get_rxfh_indir_size || |
fe62d001 | 1037 | !dev->ethtool_ops->get_rxfh) |
7850f63f BH |
1038 | return -EOPNOTSUPP; |
1039 | dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev); | |
1040 | if (dev_size == 0) | |
a5b6ee29 BH |
1041 | return -EOPNOTSUPP; |
1042 | ||
7850f63f | 1043 | if (copy_from_user(&user_size, |
a5b6ee29 | 1044 | useraddr + offsetof(struct ethtool_rxfh_indir, size), |
7850f63f | 1045 | sizeof(user_size))) |
a5b6ee29 BH |
1046 | return -EFAULT; |
1047 | ||
7850f63f BH |
1048 | if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), |
1049 | &dev_size, sizeof(dev_size))) | |
1050 | return -EFAULT; | |
1051 | ||
1052 | /* If the user buffer size is 0, this is just a query for the | |
1053 | * device table size. Otherwise, if it's smaller than the | |
1054 | * device table size it's an error. | |
1055 | */ | |
1056 | if (user_size < dev_size) | |
1057 | return user_size == 0 ? 0 : -EINVAL; | |
1058 | ||
1059 | indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); | |
a5b6ee29 BH |
1060 | if (!indir) |
1061 | return -ENOMEM; | |
1062 | ||
892311f6 | 1063 | ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL); |
a5b6ee29 BH |
1064 | if (ret) |
1065 | goto out; | |
1066 | ||
7850f63f BH |
1067 | if (copy_to_user(useraddr + |
1068 | offsetof(struct ethtool_rxfh_indir, ring_index[0]), | |
1069 | indir, dev_size * sizeof(indir[0]))) | |
a5b6ee29 BH |
1070 | ret = -EFAULT; |
1071 | ||
1072 | out: | |
1073 | kfree(indir); | |
1074 | return ret; | |
1075 | } | |
1076 | ||
1077 | static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, | |
1078 | void __user *useraddr) | |
1079 | { | |
7850f63f BH |
1080 | struct ethtool_rxnfc rx_rings; |
1081 | u32 user_size, dev_size, i; | |
1082 | u32 *indir; | |
c03a14e8 | 1083 | const struct ethtool_ops *ops = dev->ethtool_ops; |
a5b6ee29 | 1084 | int ret; |
3de0b592 | 1085 | u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); |
a5b6ee29 | 1086 | |
fe62d001 | 1087 | if (!ops->get_rxfh_indir_size || !ops->set_rxfh || |
c03a14e8 | 1088 | !ops->get_rxnfc) |
7850f63f | 1089 | return -EOPNOTSUPP; |
c03a14e8 JP |
1090 | |
1091 | dev_size = ops->get_rxfh_indir_size(dev); | |
7850f63f | 1092 | if (dev_size == 0) |
a5b6ee29 BH |
1093 | return -EOPNOTSUPP; |
1094 | ||
7850f63f | 1095 | if (copy_from_user(&user_size, |
a5b6ee29 | 1096 | useraddr + offsetof(struct ethtool_rxfh_indir, size), |
7850f63f | 1097 | sizeof(user_size))) |
a5b6ee29 BH |
1098 | return -EFAULT; |
1099 | ||
278bc429 | 1100 | if (user_size != 0 && user_size != dev_size) |
7850f63f BH |
1101 | return -EINVAL; |
1102 | ||
1103 | indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); | |
a5b6ee29 BH |
1104 | if (!indir) |
1105 | return -ENOMEM; | |
1106 | ||
7850f63f | 1107 | rx_rings.cmd = ETHTOOL_GRXRINGS; |
c03a14e8 | 1108 | ret = ops->get_rxnfc(dev, &rx_rings, NULL); |
7850f63f BH |
1109 | if (ret) |
1110 | goto out; | |
278bc429 BH |
1111 | |
1112 | if (user_size == 0) { | |
1113 | for (i = 0; i < dev_size; i++) | |
1114 | indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); | |
1115 | } else { | |
3de0b592 VD |
1116 | ret = ethtool_copy_validate_indir(indir, |
1117 | useraddr + ringidx_offset, | |
1118 | &rx_rings, | |
1119 | dev_size); | |
1120 | if (ret) | |
1121 | goto out; | |
1122 | } | |
1123 | ||
892311f6 | 1124 | ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE); |
d4ab4286 KJ |
1125 | if (ret) |
1126 | goto out; | |
1127 | ||
1128 | /* indicate whether rxfh was set to default */ | |
1129 | if (user_size == 0) | |
1130 | dev->priv_flags &= ~IFF_RXFH_CONFIGURED; | |
1131 | else | |
1132 | dev->priv_flags |= IFF_RXFH_CONFIGURED; | |
3de0b592 VD |
1133 | |
1134 | out: | |
1135 | kfree(indir); | |
1136 | return ret; | |
1137 | } | |
1138 | ||
1139 | static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, | |
1140 | void __user *useraddr) | |
1141 | { | |
1142 | int ret; | |
1143 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
f062a384 | 1144 | u32 user_indir_size, user_key_size; |
3de0b592 | 1145 | u32 dev_indir_size = 0, dev_key_size = 0; |
f062a384 | 1146 | struct ethtool_rxfh rxfh; |
3de0b592 | 1147 | u32 total_size; |
f062a384 | 1148 | u32 indir_bytes; |
3de0b592 | 1149 | u32 *indir = NULL; |
892311f6 | 1150 | u8 dev_hfunc = 0; |
3de0b592 VD |
1151 | u8 *hkey = NULL; |
1152 | u8 *rss_config; | |
1153 | ||
892311f6 | 1154 | if (!ops->get_rxfh) |
3de0b592 VD |
1155 | return -EOPNOTSUPP; |
1156 | ||
1157 | if (ops->get_rxfh_indir_size) | |
1158 | dev_indir_size = ops->get_rxfh_indir_size(dev); | |
3de0b592 VD |
1159 | if (ops->get_rxfh_key_size) |
1160 | dev_key_size = ops->get_rxfh_key_size(dev); | |
1161 | ||
f062a384 | 1162 | if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) |
3de0b592 | 1163 | return -EFAULT; |
f062a384 BH |
1164 | user_indir_size = rxfh.indir_size; |
1165 | user_key_size = rxfh.key_size; | |
3de0b592 | 1166 | |
f062a384 | 1167 | /* Check that reserved fields are 0 for now */ |
84a1d9c4 | 1168 | if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32) |
f062a384 | 1169 | return -EINVAL; |
84a1d9c4 EC |
1170 | /* Most drivers don't handle rss_context, check it's 0 as well */ |
1171 | if (rxfh.rss_context && !ops->get_rxfh_context) | |
1172 | return -EOPNOTSUPP; | |
f062a384 BH |
1173 | |
1174 | rxfh.indir_size = dev_indir_size; | |
1175 | rxfh.key_size = dev_key_size; | |
1176 | if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) | |
3de0b592 VD |
1177 | return -EFAULT; |
1178 | ||
3de0b592 VD |
1179 | if ((user_indir_size && (user_indir_size != dev_indir_size)) || |
1180 | (user_key_size && (user_key_size != dev_key_size))) | |
1181 | return -EINVAL; | |
1182 | ||
1183 | indir_bytes = user_indir_size * sizeof(indir[0]); | |
1184 | total_size = indir_bytes + user_key_size; | |
1185 | rss_config = kzalloc(total_size, GFP_USER); | |
1186 | if (!rss_config) | |
1187 | return -ENOMEM; | |
1188 | ||
1189 | if (user_indir_size) | |
1190 | indir = (u32 *)rss_config; | |
1191 | ||
1192 | if (user_key_size) | |
1193 | hkey = rss_config + indir_bytes; | |
1194 | ||
84a1d9c4 EC |
1195 | if (rxfh.rss_context) |
1196 | ret = dev->ethtool_ops->get_rxfh_context(dev, indir, hkey, | |
1197 | &dev_hfunc, | |
1198 | rxfh.rss_context); | |
1199 | else | |
1200 | ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc); | |
892311f6 EP |
1201 | if (ret) |
1202 | goto out; | |
3de0b592 | 1203 | |
892311f6 EP |
1204 | if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), |
1205 | &dev_hfunc, sizeof(rxfh.hfunc))) { | |
1206 | ret = -EFAULT; | |
1207 | } else if (copy_to_user(useraddr + | |
1208 | offsetof(struct ethtool_rxfh, rss_config[0]), | |
1209 | rss_config, total_size)) { | |
1210 | ret = -EFAULT; | |
1211 | } | |
1212 | out: | |
3de0b592 VD |
1213 | kfree(rss_config); |
1214 | ||
1215 | return ret; | |
1216 | } | |
1217 | ||
1218 | static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, | |
1219 | void __user *useraddr) | |
1220 | { | |
1221 | int ret; | |
1222 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
1223 | struct ethtool_rxnfc rx_rings; | |
f062a384 BH |
1224 | struct ethtool_rxfh rxfh; |
1225 | u32 dev_indir_size = 0, dev_key_size = 0, i; | |
3de0b592 VD |
1226 | u32 *indir = NULL, indir_bytes = 0; |
1227 | u8 *hkey = NULL; | |
1228 | u8 *rss_config; | |
3de0b592 | 1229 | u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); |
84a1d9c4 | 1230 | bool delete = false; |
3de0b592 | 1231 | |
892311f6 | 1232 | if (!ops->get_rxnfc || !ops->set_rxfh) |
3de0b592 VD |
1233 | return -EOPNOTSUPP; |
1234 | ||
1235 | if (ops->get_rxfh_indir_size) | |
1236 | dev_indir_size = ops->get_rxfh_indir_size(dev); | |
3de0b592 | 1237 | if (ops->get_rxfh_key_size) |
d340c862 | 1238 | dev_key_size = ops->get_rxfh_key_size(dev); |
3de0b592 | 1239 | |
f062a384 | 1240 | if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) |
3de0b592 VD |
1241 | return -EFAULT; |
1242 | ||
f062a384 | 1243 | /* Check that reserved fields are 0 for now */ |
84a1d9c4 | 1244 | if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32) |
f062a384 | 1245 | return -EINVAL; |
84a1d9c4 EC |
1246 | /* Most drivers don't handle rss_context, check it's 0 as well */ |
1247 | if (rxfh.rss_context && !ops->set_rxfh_context) | |
1248 | return -EOPNOTSUPP; | |
f062a384 | 1249 | |
892311f6 EP |
1250 | /* If either indir, hash key or function is valid, proceed further. |
1251 | * Must request at least one change: indir size, hash key or function. | |
3de0b592 | 1252 | */ |
f062a384 BH |
1253 | if ((rxfh.indir_size && |
1254 | rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && | |
1255 | rxfh.indir_size != dev_indir_size) || | |
1256 | (rxfh.key_size && (rxfh.key_size != dev_key_size)) || | |
1257 | (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && | |
892311f6 | 1258 | rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE)) |
3de0b592 VD |
1259 | return -EINVAL; |
1260 | ||
f062a384 | 1261 | if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) |
3de0b592 VD |
1262 | indir_bytes = dev_indir_size * sizeof(indir[0]); |
1263 | ||
f062a384 | 1264 | rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER); |
3de0b592 VD |
1265 | if (!rss_config) |
1266 | return -ENOMEM; | |
1267 | ||
1268 | rx_rings.cmd = ETHTOOL_GRXRINGS; | |
1269 | ret = ops->get_rxnfc(dev, &rx_rings, NULL); | |
1270 | if (ret) | |
1271 | goto out; | |
1272 | ||
84a1d9c4 EC |
1273 | /* rxfh.indir_size == 0 means reset the indir table to default (master |
1274 | * context) or delete the context (other RSS contexts). | |
f062a384 | 1275 | * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. |
3de0b592 | 1276 | */ |
f062a384 BH |
1277 | if (rxfh.indir_size && |
1278 | rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { | |
3de0b592 VD |
1279 | indir = (u32 *)rss_config; |
1280 | ret = ethtool_copy_validate_indir(indir, | |
1281 | useraddr + rss_cfg_offset, | |
1282 | &rx_rings, | |
f062a384 | 1283 | rxfh.indir_size); |
3de0b592 | 1284 | if (ret) |
7850f63f | 1285 | goto out; |
f062a384 | 1286 | } else if (rxfh.indir_size == 0) { |
84a1d9c4 EC |
1287 | if (rxfh.rss_context == 0) { |
1288 | indir = (u32 *)rss_config; | |
1289 | for (i = 0; i < dev_indir_size; i++) | |
1290 | indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); | |
1291 | } else { | |
1292 | delete = true; | |
1293 | } | |
3de0b592 | 1294 | } |
278bc429 | 1295 | |
f062a384 | 1296 | if (rxfh.key_size) { |
3de0b592 VD |
1297 | hkey = rss_config + indir_bytes; |
1298 | if (copy_from_user(hkey, | |
1299 | useraddr + rss_cfg_offset + indir_bytes, | |
f062a384 | 1300 | rxfh.key_size)) { |
3de0b592 VD |
1301 | ret = -EFAULT; |
1302 | goto out; | |
278bc429 | 1303 | } |
7850f63f BH |
1304 | } |
1305 | ||
84a1d9c4 EC |
1306 | if (rxfh.rss_context) |
1307 | ret = ops->set_rxfh_context(dev, indir, hkey, rxfh.hfunc, | |
1308 | &rxfh.rss_context, delete); | |
1309 | else | |
1310 | ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc); | |
d4ab4286 KJ |
1311 | if (ret) |
1312 | goto out; | |
1313 | ||
84a1d9c4 EC |
1314 | if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), |
1315 | &rxfh.rss_context, sizeof(rxfh.rss_context))) | |
1316 | ret = -EFAULT; | |
1317 | ||
1318 | if (!rxfh.rss_context) { | |
1319 | /* indicate whether rxfh was set to default */ | |
1320 | if (rxfh.indir_size == 0) | |
1321 | dev->priv_flags &= ~IFF_RXFH_CONFIGURED; | |
1322 | else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) | |
1323 | dev->priv_flags |= IFF_RXFH_CONFIGURED; | |
1324 | } | |
a5b6ee29 BH |
1325 | |
1326 | out: | |
3de0b592 | 1327 | kfree(rss_config); |
a5b6ee29 BH |
1328 | return ret; |
1329 | } | |
1330 | ||
1da177e4 LT |
1331 | static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) |
1332 | { | |
1333 | struct ethtool_regs regs; | |
76fd8593 | 1334 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 LT |
1335 | void *regbuf; |
1336 | int reglen, ret; | |
1337 | ||
1338 | if (!ops->get_regs || !ops->get_regs_len) | |
1339 | return -EOPNOTSUPP; | |
1340 | ||
1341 | if (copy_from_user(®s, useraddr, sizeof(regs))) | |
1342 | return -EFAULT; | |
1343 | ||
1344 | reglen = ops->get_regs_len(dev); | |
f9fc54d3 YL |
1345 | if (reglen <= 0) |
1346 | return reglen; | |
1347 | ||
1da177e4 LT |
1348 | if (regs.len > reglen) |
1349 | regs.len = reglen; | |
1350 | ||
3808d348 SG |
1351 | regbuf = NULL; |
1352 | if (reglen) { | |
1353 | regbuf = vzalloc(reglen); | |
1354 | if (!regbuf) | |
1355 | return -ENOMEM; | |
1356 | } | |
1da177e4 LT |
1357 | |
1358 | ops->get_regs(dev, ®s, regbuf); | |
1359 | ||
1360 | ret = -EFAULT; | |
1361 | if (copy_to_user(useraddr, ®s, sizeof(regs))) | |
1362 | goto out; | |
1363 | useraddr += offsetof(struct ethtool_regs, data); | |
67ae7cf1 | 1364 | if (regbuf && copy_to_user(useraddr, regbuf, regs.len)) |
1da177e4 LT |
1365 | goto out; |
1366 | ret = 0; | |
1367 | ||
1368 | out: | |
a77f5db3 | 1369 | vfree(regbuf); |
1da177e4 LT |
1370 | return ret; |
1371 | } | |
1372 | ||
d73d3a8c BH |
1373 | static int ethtool_reset(struct net_device *dev, char __user *useraddr) |
1374 | { | |
1375 | struct ethtool_value reset; | |
1376 | int ret; | |
1377 | ||
1378 | if (!dev->ethtool_ops->reset) | |
1379 | return -EOPNOTSUPP; | |
1380 | ||
1381 | if (copy_from_user(&reset, useraddr, sizeof(reset))) | |
1382 | return -EFAULT; | |
1383 | ||
1384 | ret = dev->ethtool_ops->reset(dev, &reset.data); | |
1385 | if (ret) | |
1386 | return ret; | |
1387 | ||
1388 | if (copy_to_user(useraddr, &reset, sizeof(reset))) | |
1389 | return -EFAULT; | |
1390 | return 0; | |
1391 | } | |
1392 | ||
1da177e4 LT |
1393 | static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) |
1394 | { | |
8e557421 | 1395 | struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL }; |
1da177e4 LT |
1396 | |
1397 | if (!dev->ethtool_ops->get_wol) | |
1398 | return -EOPNOTSUPP; | |
1399 | ||
1400 | dev->ethtool_ops->get_wol(dev, &wol); | |
1401 | ||
1402 | if (copy_to_user(useraddr, &wol, sizeof(wol))) | |
1403 | return -EFAULT; | |
1404 | return 0; | |
1405 | } | |
1406 | ||
1407 | static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) | |
1408 | { | |
1409 | struct ethtool_wolinfo wol; | |
61941143 | 1410 | int ret; |
1da177e4 LT |
1411 | |
1412 | if (!dev->ethtool_ops->set_wol) | |
1413 | return -EOPNOTSUPP; | |
1414 | ||
1415 | if (copy_from_user(&wol, useraddr, sizeof(wol))) | |
1416 | return -EFAULT; | |
1417 | ||
61941143 HK |
1418 | ret = dev->ethtool_ops->set_wol(dev, &wol); |
1419 | if (ret) | |
1420 | return ret; | |
1421 | ||
1422 | dev->wol_enabled = !!wol.wolopts; | |
1423 | ||
1424 | return 0; | |
1da177e4 LT |
1425 | } |
1426 | ||
80f12ecc YM |
1427 | static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) |
1428 | { | |
1429 | struct ethtool_eee edata; | |
1430 | int rc; | |
1431 | ||
1432 | if (!dev->ethtool_ops->get_eee) | |
1433 | return -EOPNOTSUPP; | |
1434 | ||
1435 | memset(&edata, 0, sizeof(struct ethtool_eee)); | |
1436 | edata.cmd = ETHTOOL_GEEE; | |
1437 | rc = dev->ethtool_ops->get_eee(dev, &edata); | |
1438 | ||
1439 | if (rc) | |
1440 | return rc; | |
1441 | ||
1442 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
1443 | return -EFAULT; | |
1444 | ||
1445 | return 0; | |
1446 | } | |
1447 | ||
1448 | static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) | |
1449 | { | |
1450 | struct ethtool_eee edata; | |
1451 | ||
1452 | if (!dev->ethtool_ops->set_eee) | |
1453 | return -EOPNOTSUPP; | |
1454 | ||
1455 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
1456 | return -EFAULT; | |
1457 | ||
1458 | return dev->ethtool_ops->set_eee(dev, &edata); | |
1459 | } | |
1460 | ||
1da177e4 LT |
1461 | static int ethtool_nway_reset(struct net_device *dev) |
1462 | { | |
1463 | if (!dev->ethtool_ops->nway_reset) | |
1464 | return -EOPNOTSUPP; | |
1465 | ||
1466 | return dev->ethtool_ops->nway_reset(dev); | |
1467 | } | |
1468 | ||
e596e6e4 BH |
1469 | static int ethtool_get_link(struct net_device *dev, char __user *useraddr) |
1470 | { | |
1471 | struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; | |
1472 | ||
1473 | if (!dev->ethtool_ops->get_link) | |
1474 | return -EOPNOTSUPP; | |
1475 | ||
1476 | edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev); | |
1477 | ||
1478 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
1479 | return -EFAULT; | |
1480 | return 0; | |
1481 | } | |
1482 | ||
081d094e BH |
1483 | static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, |
1484 | int (*getter)(struct net_device *, | |
1485 | struct ethtool_eeprom *, u8 *), | |
1486 | u32 total_len) | |
1da177e4 LT |
1487 | { |
1488 | struct ethtool_eeprom eeprom; | |
b131dd5d MSB |
1489 | void __user *userbuf = useraddr + sizeof(eeprom); |
1490 | u32 bytes_remaining; | |
1da177e4 | 1491 | u8 *data; |
b131dd5d | 1492 | int ret = 0; |
1da177e4 | 1493 | |
1da177e4 LT |
1494 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) |
1495 | return -EFAULT; | |
1496 | ||
1497 | /* Check for wrap and zero */ | |
1498 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
1499 | return -EINVAL; | |
1500 | ||
1501 | /* Check for exceeding total eeprom len */ | |
081d094e | 1502 | if (eeprom.offset + eeprom.len > total_len) |
1da177e4 LT |
1503 | return -EINVAL; |
1504 | ||
b131dd5d | 1505 | data = kmalloc(PAGE_SIZE, GFP_USER); |
1da177e4 LT |
1506 | if (!data) |
1507 | return -ENOMEM; | |
1508 | ||
b131dd5d MSB |
1509 | bytes_remaining = eeprom.len; |
1510 | while (bytes_remaining > 0) { | |
1511 | eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); | |
1512 | ||
081d094e | 1513 | ret = getter(dev, &eeprom, data); |
b131dd5d MSB |
1514 | if (ret) |
1515 | break; | |
1516 | if (copy_to_user(userbuf, data, eeprom.len)) { | |
1517 | ret = -EFAULT; | |
1518 | break; | |
1519 | } | |
1520 | userbuf += eeprom.len; | |
1521 | eeprom.offset += eeprom.len; | |
1522 | bytes_remaining -= eeprom.len; | |
1523 | } | |
1da177e4 | 1524 | |
c5835df9 MSB |
1525 | eeprom.len = userbuf - (useraddr + sizeof(eeprom)); |
1526 | eeprom.offset -= eeprom.len; | |
1527 | if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) | |
1528 | ret = -EFAULT; | |
1529 | ||
1da177e4 LT |
1530 | kfree(data); |
1531 | return ret; | |
1532 | } | |
1533 | ||
081d094e BH |
1534 | static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) |
1535 | { | |
1536 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
1537 | ||
e0fb6fb6 GR |
1538 | if (!ops->get_eeprom || !ops->get_eeprom_len || |
1539 | !ops->get_eeprom_len(dev)) | |
081d094e BH |
1540 | return -EOPNOTSUPP; |
1541 | ||
1542 | return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, | |
1543 | ops->get_eeprom_len(dev)); | |
1544 | } | |
1545 | ||
1da177e4 LT |
1546 | static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) |
1547 | { | |
1548 | struct ethtool_eeprom eeprom; | |
76fd8593 | 1549 | const struct ethtool_ops *ops = dev->ethtool_ops; |
b131dd5d MSB |
1550 | void __user *userbuf = useraddr + sizeof(eeprom); |
1551 | u32 bytes_remaining; | |
1da177e4 | 1552 | u8 *data; |
b131dd5d | 1553 | int ret = 0; |
1da177e4 | 1554 | |
e0fb6fb6 GR |
1555 | if (!ops->set_eeprom || !ops->get_eeprom_len || |
1556 | !ops->get_eeprom_len(dev)) | |
1da177e4 LT |
1557 | return -EOPNOTSUPP; |
1558 | ||
1559 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) | |
1560 | return -EFAULT; | |
1561 | ||
1562 | /* Check for wrap and zero */ | |
1563 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
1564 | return -EINVAL; | |
1565 | ||
1566 | /* Check for exceeding total eeprom len */ | |
1567 | if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) | |
1568 | return -EINVAL; | |
1569 | ||
b131dd5d | 1570 | data = kmalloc(PAGE_SIZE, GFP_USER); |
1da177e4 LT |
1571 | if (!data) |
1572 | return -ENOMEM; | |
1573 | ||
b131dd5d MSB |
1574 | bytes_remaining = eeprom.len; |
1575 | while (bytes_remaining > 0) { | |
1576 | eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); | |
1577 | ||
1578 | if (copy_from_user(data, userbuf, eeprom.len)) { | |
1579 | ret = -EFAULT; | |
1580 | break; | |
1581 | } | |
1582 | ret = ops->set_eeprom(dev, &eeprom, data); | |
1583 | if (ret) | |
1584 | break; | |
1585 | userbuf += eeprom.len; | |
1586 | eeprom.offset += eeprom.len; | |
1587 | bytes_remaining -= eeprom.len; | |
1588 | } | |
1da177e4 | 1589 | |
1da177e4 LT |
1590 | kfree(data); |
1591 | return ret; | |
1592 | } | |
1593 | ||
97f8aefb | 1594 | static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, |
1595 | void __user *useraddr) | |
1da177e4 | 1596 | { |
8e557421 | 1597 | struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; |
1da177e4 LT |
1598 | |
1599 | if (!dev->ethtool_ops->get_coalesce) | |
1600 | return -EOPNOTSUPP; | |
1601 | ||
1602 | dev->ethtool_ops->get_coalesce(dev, &coalesce); | |
1603 | ||
1604 | if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) | |
1605 | return -EFAULT; | |
1606 | return 0; | |
1607 | } | |
1608 | ||
97f8aefb | 1609 | static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, |
1610 | void __user *useraddr) | |
1da177e4 LT |
1611 | { |
1612 | struct ethtool_coalesce coalesce; | |
1613 | ||
fa04ae5c | 1614 | if (!dev->ethtool_ops->set_coalesce) |
1da177e4 LT |
1615 | return -EOPNOTSUPP; |
1616 | ||
1617 | if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) | |
1618 | return -EFAULT; | |
1619 | ||
1620 | return dev->ethtool_ops->set_coalesce(dev, &coalesce); | |
1621 | } | |
1622 | ||
1623 | static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) | |
1624 | { | |
8e557421 | 1625 | struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; |
1da177e4 LT |
1626 | |
1627 | if (!dev->ethtool_ops->get_ringparam) | |
1628 | return -EOPNOTSUPP; | |
1629 | ||
1630 | dev->ethtool_ops->get_ringparam(dev, &ringparam); | |
1631 | ||
1632 | if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) | |
1633 | return -EFAULT; | |
1634 | return 0; | |
1635 | } | |
1636 | ||
1637 | static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) | |
1638 | { | |
37e2d99b | 1639 | struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM }; |
1da177e4 | 1640 | |
37e2d99b | 1641 | if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) |
1da177e4 LT |
1642 | return -EOPNOTSUPP; |
1643 | ||
1644 | if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) | |
1645 | return -EFAULT; | |
1646 | ||
37e2d99b EE |
1647 | dev->ethtool_ops->get_ringparam(dev, &max); |
1648 | ||
1649 | /* ensure new ring parameters are within the maximums */ | |
1650 | if (ringparam.rx_pending > max.rx_max_pending || | |
1651 | ringparam.rx_mini_pending > max.rx_mini_max_pending || | |
1652 | ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || | |
1653 | ringparam.tx_pending > max.tx_max_pending) | |
1654 | return -EINVAL; | |
1655 | ||
1da177e4 LT |
1656 | return dev->ethtool_ops->set_ringparam(dev, &ringparam); |
1657 | } | |
1658 | ||
8b5933c3 | 1659 | static noinline_for_stack int ethtool_get_channels(struct net_device *dev, |
1660 | void __user *useraddr) | |
1661 | { | |
1662 | struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; | |
1663 | ||
1664 | if (!dev->ethtool_ops->get_channels) | |
1665 | return -EOPNOTSUPP; | |
1666 | ||
1667 | dev->ethtool_ops->get_channels(dev, &channels); | |
1668 | ||
1669 | if (copy_to_user(useraddr, &channels, sizeof(channels))) | |
1670 | return -EFAULT; | |
1671 | return 0; | |
1672 | } | |
1673 | ||
1674 | static noinline_for_stack int ethtool_set_channels(struct net_device *dev, | |
1675 | void __user *useraddr) | |
1676 | { | |
b8c8a2e2 | 1677 | struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; |
1661d346 | 1678 | u16 from_channel, to_channel; |
d4ab4286 | 1679 | u32 max_rx_in_use = 0; |
1661d346 | 1680 | unsigned int i; |
8b5933c3 | 1681 | |
8bf36862 | 1682 | if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) |
8b5933c3 | 1683 | return -EOPNOTSUPP; |
1684 | ||
1685 | if (copy_from_user(&channels, useraddr, sizeof(channels))) | |
1686 | return -EFAULT; | |
1687 | ||
b8c8a2e2 | 1688 | dev->ethtool_ops->get_channels(dev, &curr); |
8bf36862 KJ |
1689 | |
1690 | /* ensure new counts are within the maximums */ | |
b8c8a2e2 JK |
1691 | if (channels.rx_count > curr.max_rx || |
1692 | channels.tx_count > curr.max_tx || | |
1693 | channels.combined_count > curr.max_combined || | |
1694 | channels.other_count > curr.max_other) | |
8bf36862 KJ |
1695 | return -EINVAL; |
1696 | ||
d4ab4286 KJ |
1697 | /* ensure the new Rx count fits within the configured Rx flow |
1698 | * indirection table settings */ | |
1699 | if (netif_is_rxfh_configured(dev) && | |
1700 | !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) && | |
1701 | (channels.combined_count + channels.rx_count) <= max_rx_in_use) | |
1702 | return -EINVAL; | |
1703 | ||
1661d346 JK |
1704 | /* Disabling channels, query zero-copy AF_XDP sockets */ |
1705 | from_channel = channels.combined_count + | |
1706 | min(channels.rx_count, channels.tx_count); | |
1707 | to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); | |
1708 | for (i = from_channel; i < to_channel; i++) | |
1709 | if (xdp_get_umem_from_qid(dev, i)) | |
1710 | return -EINVAL; | |
1711 | ||
8b5933c3 | 1712 | return dev->ethtool_ops->set_channels(dev, &channels); |
1713 | } | |
1714 | ||
1da177e4 LT |
1715 | static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) |
1716 | { | |
1717 | struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM }; | |
1718 | ||
1719 | if (!dev->ethtool_ops->get_pauseparam) | |
1720 | return -EOPNOTSUPP; | |
1721 | ||
1722 | dev->ethtool_ops->get_pauseparam(dev, &pauseparam); | |
1723 | ||
1724 | if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) | |
1725 | return -EFAULT; | |
1726 | return 0; | |
1727 | } | |
1728 | ||
1729 | static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) | |
1730 | { | |
1731 | struct ethtool_pauseparam pauseparam; | |
1732 | ||
e1b90c41 | 1733 | if (!dev->ethtool_ops->set_pauseparam) |
1da177e4 LT |
1734 | return -EOPNOTSUPP; |
1735 | ||
1736 | if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) | |
1737 | return -EFAULT; | |
1738 | ||
1739 | return dev->ethtool_ops->set_pauseparam(dev, &pauseparam); | |
1740 | } | |
1741 | ||
1da177e4 LT |
1742 | static int ethtool_self_test(struct net_device *dev, char __user *useraddr) |
1743 | { | |
1744 | struct ethtool_test test; | |
76fd8593 | 1745 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 1746 | u64 *data; |
ff03d49f | 1747 | int ret, test_len; |
1da177e4 | 1748 | |
a9828ec6 | 1749 | if (!ops->self_test || !ops->get_sset_count) |
1da177e4 LT |
1750 | return -EOPNOTSUPP; |
1751 | ||
a9828ec6 | 1752 | test_len = ops->get_sset_count(dev, ETH_SS_TEST); |
ff03d49f JG |
1753 | if (test_len < 0) |
1754 | return test_len; | |
1755 | WARN_ON(test_len == 0); | |
1756 | ||
1da177e4 LT |
1757 | if (copy_from_user(&test, useraddr, sizeof(test))) |
1758 | return -EFAULT; | |
1759 | ||
ff03d49f | 1760 | test.len = test_len; |
6da2ec56 | 1761 | data = kmalloc_array(test_len, sizeof(u64), GFP_USER); |
1da177e4 LT |
1762 | if (!data) |
1763 | return -ENOMEM; | |
1764 | ||
1765 | ops->self_test(dev, &test, data); | |
1766 | ||
1767 | ret = -EFAULT; | |
1768 | if (copy_to_user(useraddr, &test, sizeof(test))) | |
1769 | goto out; | |
1770 | useraddr += sizeof(test); | |
1771 | if (copy_to_user(useraddr, data, test.len * sizeof(u64))) | |
1772 | goto out; | |
1773 | ret = 0; | |
1774 | ||
1775 | out: | |
1776 | kfree(data); | |
1777 | return ret; | |
1778 | } | |
1779 | ||
1780 | static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) | |
1781 | { | |
1782 | struct ethtool_gstrings gstrings; | |
1da177e4 LT |
1783 | u8 *data; |
1784 | int ret; | |
1785 | ||
1da177e4 LT |
1786 | if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) |
1787 | return -EFAULT; | |
1788 | ||
340ae165 | 1789 | ret = __ethtool_get_sset_count(dev, gstrings.string_set); |
a9828ec6 BH |
1790 | if (ret < 0) |
1791 | return ret; | |
4d1ceea8 AS |
1792 | if (ret > S32_MAX / ETH_GSTRING_LEN) |
1793 | return -ENOMEM; | |
1794 | WARN_ON_ONCE(!ret); | |
a9828ec6 BH |
1795 | |
1796 | gstrings.len = ret; | |
fad953ce | 1797 | data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); |
4d1ceea8 | 1798 | if (gstrings.len && !data) |
1da177e4 LT |
1799 | return -ENOMEM; |
1800 | ||
340ae165 | 1801 | __ethtool_get_strings(dev, gstrings.string_set, data); |
1da177e4 LT |
1802 | |
1803 | ret = -EFAULT; | |
1804 | if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) | |
1805 | goto out; | |
1806 | useraddr += sizeof(gstrings); | |
4d1ceea8 AS |
1807 | if (gstrings.len && |
1808 | copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN)) | |
1da177e4 LT |
1809 | goto out; |
1810 | ret = 0; | |
1811 | ||
340ae165 | 1812 | out: |
4d1ceea8 | 1813 | vfree(data); |
1da177e4 LT |
1814 | return ret; |
1815 | } | |
1816 | ||
1817 | static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) | |
1818 | { | |
1819 | struct ethtool_value id; | |
68f512f2 | 1820 | static bool busy; |
c03a14e8 | 1821 | const struct ethtool_ops *ops = dev->ethtool_ops; |
68f512f2 | 1822 | int rc; |
1da177e4 | 1823 | |
c03a14e8 | 1824 | if (!ops->set_phys_id) |
1da177e4 LT |
1825 | return -EOPNOTSUPP; |
1826 | ||
68f512f2 BH |
1827 | if (busy) |
1828 | return -EBUSY; | |
1829 | ||
1da177e4 LT |
1830 | if (copy_from_user(&id, useraddr, sizeof(id))) |
1831 | return -EFAULT; | |
1832 | ||
c03a14e8 | 1833 | rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); |
fce55922 | 1834 | if (rc < 0) |
68f512f2 BH |
1835 | return rc; |
1836 | ||
1837 | /* Drop the RTNL lock while waiting, but prevent reentry or | |
1838 | * removal of the device. | |
1839 | */ | |
1840 | busy = true; | |
1841 | dev_hold(dev); | |
1842 | rtnl_unlock(); | |
1843 | ||
1844 | if (rc == 0) { | |
1845 | /* Driver will handle this itself */ | |
1846 | schedule_timeout_interruptible( | |
143780c6 | 1847 | id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); |
68f512f2 | 1848 | } else { |
fce55922 AB |
1849 | /* Driver expects to be called at twice the frequency in rc */ |
1850 | int n = rc * 2, i, interval = HZ / n; | |
1851 | ||
1852 | /* Count down seconds */ | |
68f512f2 | 1853 | do { |
fce55922 AB |
1854 | /* Count down iterations per second */ |
1855 | i = n; | |
1856 | do { | |
1857 | rtnl_lock(); | |
c03a14e8 | 1858 | rc = ops->set_phys_id(dev, |
fce55922 AB |
1859 | (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); |
1860 | rtnl_unlock(); | |
1861 | if (rc) | |
1862 | break; | |
1863 | schedule_timeout_interruptible(interval); | |
1864 | } while (!signal_pending(current) && --i != 0); | |
68f512f2 BH |
1865 | } while (!signal_pending(current) && |
1866 | (id.data == 0 || --id.data != 0)); | |
1867 | } | |
1868 | ||
1869 | rtnl_lock(); | |
1870 | dev_put(dev); | |
1871 | busy = false; | |
1872 | ||
c03a14e8 | 1873 | (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); |
68f512f2 | 1874 | return rc; |
1da177e4 LT |
1875 | } |
1876 | ||
1877 | static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) | |
1878 | { | |
1879 | struct ethtool_stats stats; | |
76fd8593 | 1880 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 1881 | u64 *data; |
ff03d49f | 1882 | int ret, n_stats; |
1da177e4 | 1883 | |
a9828ec6 | 1884 | if (!ops->get_ethtool_stats || !ops->get_sset_count) |
1da177e4 LT |
1885 | return -EOPNOTSUPP; |
1886 | ||
a9828ec6 | 1887 | n_stats = ops->get_sset_count(dev, ETH_SS_STATS); |
ff03d49f JG |
1888 | if (n_stats < 0) |
1889 | return n_stats; | |
4d1ceea8 AS |
1890 | if (n_stats > S32_MAX / sizeof(u64)) |
1891 | return -ENOMEM; | |
1892 | WARN_ON_ONCE(!n_stats); | |
1da177e4 LT |
1893 | if (copy_from_user(&stats, useraddr, sizeof(stats))) |
1894 | return -EFAULT; | |
1895 | ||
ff03d49f | 1896 | stats.n_stats = n_stats; |
fad953ce | 1897 | data = vzalloc(array_size(n_stats, sizeof(u64))); |
4d1ceea8 | 1898 | if (n_stats && !data) |
1da177e4 LT |
1899 | return -ENOMEM; |
1900 | ||
1901 | ops->get_ethtool_stats(dev, &stats, data); | |
1902 | ||
1903 | ret = -EFAULT; | |
1904 | if (copy_to_user(useraddr, &stats, sizeof(stats))) | |
1905 | goto out; | |
1906 | useraddr += sizeof(stats); | |
4d1ceea8 | 1907 | if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64))) |
1da177e4 LT |
1908 | goto out; |
1909 | ret = 0; | |
1910 | ||
1911 | out: | |
4d1ceea8 | 1912 | vfree(data); |
1da177e4 LT |
1913 | return ret; |
1914 | } | |
1915 | ||
f3a40945 AL |
1916 | static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) |
1917 | { | |
99943382 | 1918 | const struct ethtool_ops *ops = dev->ethtool_ops; |
f3a40945 | 1919 | struct phy_device *phydev = dev->phydev; |
99943382 | 1920 | struct ethtool_stats stats; |
f3a40945 AL |
1921 | u64 *data; |
1922 | int ret, n_stats; | |
1923 | ||
99943382 | 1924 | if (!phydev && (!ops->get_ethtool_phy_stats || !ops->get_sset_count)) |
f3a40945 AL |
1925 | return -EOPNOTSUPP; |
1926 | ||
99943382 FF |
1927 | if (dev->phydev && !ops->get_ethtool_phy_stats) |
1928 | n_stats = phy_ethtool_get_sset_count(dev->phydev); | |
1929 | else | |
1930 | n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); | |
f3a40945 AL |
1931 | if (n_stats < 0) |
1932 | return n_stats; | |
4d1ceea8 AS |
1933 | if (n_stats > S32_MAX / sizeof(u64)) |
1934 | return -ENOMEM; | |
1935 | WARN_ON_ONCE(!n_stats); | |
f3a40945 AL |
1936 | |
1937 | if (copy_from_user(&stats, useraddr, sizeof(stats))) | |
1938 | return -EFAULT; | |
1939 | ||
1940 | stats.n_stats = n_stats; | |
fad953ce | 1941 | data = vzalloc(array_size(n_stats, sizeof(u64))); |
4d1ceea8 | 1942 | if (n_stats && !data) |
f3a40945 AL |
1943 | return -ENOMEM; |
1944 | ||
99943382 FF |
1945 | if (dev->phydev && !ops->get_ethtool_phy_stats) { |
1946 | ret = phy_ethtool_get_stats(dev->phydev, &stats, data); | |
1947 | if (ret < 0) | |
1948 | return ret; | |
1949 | } else { | |
1950 | ops->get_ethtool_phy_stats(dev, &stats, data); | |
1951 | } | |
f3a40945 AL |
1952 | |
1953 | ret = -EFAULT; | |
1954 | if (copy_to_user(useraddr, &stats, sizeof(stats))) | |
1955 | goto out; | |
1956 | useraddr += sizeof(stats); | |
4d1ceea8 | 1957 | if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64))) |
f3a40945 AL |
1958 | goto out; |
1959 | ret = 0; | |
1960 | ||
1961 | out: | |
4d1ceea8 | 1962 | vfree(data); |
f3a40945 AL |
1963 | return ret; |
1964 | } | |
1965 | ||
0bf0519d | 1966 | static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) |
a6f9a705 JW |
1967 | { |
1968 | struct ethtool_perm_addr epaddr; | |
a6f9a705 | 1969 | |
313674af | 1970 | if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) |
a6f9a705 JW |
1971 | return -EFAULT; |
1972 | ||
313674af MW |
1973 | if (epaddr.size < dev->addr_len) |
1974 | return -ETOOSMALL; | |
1975 | epaddr.size = dev->addr_len; | |
a6f9a705 | 1976 | |
a6f9a705 | 1977 | if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) |
313674af | 1978 | return -EFAULT; |
a6f9a705 | 1979 | useraddr += sizeof(epaddr); |
313674af MW |
1980 | if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) |
1981 | return -EFAULT; | |
1982 | return 0; | |
a6f9a705 JW |
1983 | } |
1984 | ||
13c99b24 JG |
1985 | static int ethtool_get_value(struct net_device *dev, char __user *useraddr, |
1986 | u32 cmd, u32 (*actor)(struct net_device *)) | |
3ae7c0b2 | 1987 | { |
8e557421 | 1988 | struct ethtool_value edata = { .cmd = cmd }; |
3ae7c0b2 | 1989 | |
13c99b24 | 1990 | if (!actor) |
3ae7c0b2 JG |
1991 | return -EOPNOTSUPP; |
1992 | ||
13c99b24 | 1993 | edata.data = actor(dev); |
3ae7c0b2 JG |
1994 | |
1995 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
1996 | return -EFAULT; | |
1997 | return 0; | |
1998 | } | |
1999 | ||
13c99b24 JG |
2000 | static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, |
2001 | void (*actor)(struct net_device *, u32)) | |
3ae7c0b2 JG |
2002 | { |
2003 | struct ethtool_value edata; | |
2004 | ||
13c99b24 | 2005 | if (!actor) |
3ae7c0b2 JG |
2006 | return -EOPNOTSUPP; |
2007 | ||
2008 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
2009 | return -EFAULT; | |
2010 | ||
13c99b24 | 2011 | actor(dev, edata.data); |
339bf024 JG |
2012 | return 0; |
2013 | } | |
2014 | ||
13c99b24 JG |
2015 | static int ethtool_set_value(struct net_device *dev, char __user *useraddr, |
2016 | int (*actor)(struct net_device *, u32)) | |
339bf024 JG |
2017 | { |
2018 | struct ethtool_value edata; | |
2019 | ||
13c99b24 | 2020 | if (!actor) |
339bf024 JG |
2021 | return -EOPNOTSUPP; |
2022 | ||
2023 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
2024 | return -EFAULT; | |
2025 | ||
13c99b24 | 2026 | return actor(dev, edata.data); |
339bf024 JG |
2027 | } |
2028 | ||
97f8aefb | 2029 | static noinline_for_stack int ethtool_flash_device(struct net_device *dev, |
2030 | char __user *useraddr) | |
05c6a8d7 AK |
2031 | { |
2032 | struct ethtool_flash efl; | |
2033 | ||
2034 | if (copy_from_user(&efl, useraddr, sizeof(efl))) | |
2035 | return -EFAULT; | |
2036 | ||
2037 | if (!dev->ethtool_ops->flash_device) | |
2038 | return -EOPNOTSUPP; | |
2039 | ||
786f5281 BH |
2040 | efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; |
2041 | ||
05c6a8d7 AK |
2042 | return dev->ethtool_ops->flash_device(dev, &efl); |
2043 | } | |
2044 | ||
29dd54b7 AC |
2045 | static int ethtool_set_dump(struct net_device *dev, |
2046 | void __user *useraddr) | |
2047 | { | |
2048 | struct ethtool_dump dump; | |
2049 | ||
2050 | if (!dev->ethtool_ops->set_dump) | |
2051 | return -EOPNOTSUPP; | |
2052 | ||
2053 | if (copy_from_user(&dump, useraddr, sizeof(dump))) | |
2054 | return -EFAULT; | |
2055 | ||
2056 | return dev->ethtool_ops->set_dump(dev, &dump); | |
2057 | } | |
2058 | ||
2059 | static int ethtool_get_dump_flag(struct net_device *dev, | |
2060 | void __user *useraddr) | |
2061 | { | |
2062 | int ret; | |
2063 | struct ethtool_dump dump; | |
2064 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2065 | ||
c03a14e8 | 2066 | if (!ops->get_dump_flag) |
29dd54b7 AC |
2067 | return -EOPNOTSUPP; |
2068 | ||
2069 | if (copy_from_user(&dump, useraddr, sizeof(dump))) | |
2070 | return -EFAULT; | |
2071 | ||
2072 | ret = ops->get_dump_flag(dev, &dump); | |
2073 | if (ret) | |
2074 | return ret; | |
2075 | ||
2076 | if (copy_to_user(useraddr, &dump, sizeof(dump))) | |
2077 | return -EFAULT; | |
2078 | return 0; | |
2079 | } | |
2080 | ||
2081 | static int ethtool_get_dump_data(struct net_device *dev, | |
2082 | void __user *useraddr) | |
2083 | { | |
2084 | int ret; | |
2085 | __u32 len; | |
2086 | struct ethtool_dump dump, tmp; | |
2087 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2088 | void *data = NULL; | |
2089 | ||
c03a14e8 | 2090 | if (!ops->get_dump_data || !ops->get_dump_flag) |
29dd54b7 AC |
2091 | return -EOPNOTSUPP; |
2092 | ||
2093 | if (copy_from_user(&dump, useraddr, sizeof(dump))) | |
2094 | return -EFAULT; | |
2095 | ||
2096 | memset(&tmp, 0, sizeof(tmp)); | |
2097 | tmp.cmd = ETHTOOL_GET_DUMP_FLAG; | |
2098 | ret = ops->get_dump_flag(dev, &tmp); | |
2099 | if (ret) | |
2100 | return ret; | |
2101 | ||
c590b5e2 | 2102 | len = min(tmp.len, dump.len); |
29dd54b7 AC |
2103 | if (!len) |
2104 | return -EFAULT; | |
2105 | ||
c590b5e2 MS |
2106 | /* Don't ever let the driver think there's more space available |
2107 | * than it requested with .get_dump_flag(). | |
2108 | */ | |
2109 | dump.len = len; | |
2110 | ||
2111 | /* Always allocate enough space to hold the whole thing so that the | |
2112 | * driver does not need to check the length and bother with partial | |
2113 | * dumping. | |
2114 | */ | |
29dd54b7 AC |
2115 | data = vzalloc(tmp.len); |
2116 | if (!data) | |
2117 | return -ENOMEM; | |
2118 | ret = ops->get_dump_data(dev, &dump, data); | |
2119 | if (ret) | |
2120 | goto out; | |
2121 | ||
c590b5e2 MS |
2122 | /* There are two sane possibilities: |
2123 | * 1. The driver's .get_dump_data() does not touch dump.len. | |
2124 | * 2. Or it may set dump.len to how much it really writes, which | |
2125 | * should be tmp.len (or len if it can do a partial dump). | |
2126 | * In any case respond to userspace with the actual length of data | |
2127 | * it's receiving. | |
2128 | */ | |
2129 | WARN_ON(dump.len != len && dump.len != tmp.len); | |
2130 | dump.len = len; | |
2131 | ||
29dd54b7 AC |
2132 | if (copy_to_user(useraddr, &dump, sizeof(dump))) { |
2133 | ret = -EFAULT; | |
2134 | goto out; | |
2135 | } | |
2136 | useraddr += offsetof(struct ethtool_dump, data); | |
2137 | if (copy_to_user(useraddr, data, len)) | |
2138 | ret = -EFAULT; | |
2139 | out: | |
2140 | vfree(data); | |
2141 | return ret; | |
2142 | } | |
2143 | ||
c8f3a8c3 RC |
2144 | static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) |
2145 | { | |
2146 | int err = 0; | |
2147 | struct ethtool_ts_info info; | |
2148 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2149 | struct phy_device *phydev = dev->phydev; | |
2150 | ||
2151 | memset(&info, 0, sizeof(info)); | |
2152 | info.cmd = ETHTOOL_GET_TS_INFO; | |
2153 | ||
2154 | if (phydev && phydev->drv && phydev->drv->ts_info) { | |
c8f3a8c3 | 2155 | err = phydev->drv->ts_info(phydev, &info); |
c03a14e8 | 2156 | } else if (ops->get_ts_info) { |
c8f3a8c3 | 2157 | err = ops->get_ts_info(dev, &info); |
c8f3a8c3 RC |
2158 | } else { |
2159 | info.so_timestamping = | |
2160 | SOF_TIMESTAMPING_RX_SOFTWARE | | |
2161 | SOF_TIMESTAMPING_SOFTWARE; | |
2162 | info.phc_index = -1; | |
2163 | } | |
2164 | ||
2165 | if (err) | |
2166 | return err; | |
2167 | ||
2168 | if (copy_to_user(useraddr, &info, sizeof(info))) | |
2169 | err = -EFAULT; | |
2170 | ||
2171 | return err; | |
2172 | } | |
2173 | ||
2f438366 ES |
2174 | static int __ethtool_get_module_info(struct net_device *dev, |
2175 | struct ethtool_modinfo *modinfo) | |
2176 | { | |
2177 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2178 | struct phy_device *phydev = dev->phydev; | |
2179 | ||
e679c9c1 RK |
2180 | if (dev->sfp_bus) |
2181 | return sfp_get_module_info(dev->sfp_bus, modinfo); | |
2182 | ||
2f438366 ES |
2183 | if (phydev && phydev->drv && phydev->drv->module_info) |
2184 | return phydev->drv->module_info(phydev, modinfo); | |
2185 | ||
2186 | if (ops->get_module_info) | |
2187 | return ops->get_module_info(dev, modinfo); | |
2188 | ||
2189 | return -EOPNOTSUPP; | |
2190 | } | |
2191 | ||
41c3cb6d SH |
2192 | static int ethtool_get_module_info(struct net_device *dev, |
2193 | void __user *useraddr) | |
2194 | { | |
2195 | int ret; | |
2196 | struct ethtool_modinfo modinfo; | |
41c3cb6d SH |
2197 | |
2198 | if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) | |
2199 | return -EFAULT; | |
2200 | ||
2f438366 | 2201 | ret = __ethtool_get_module_info(dev, &modinfo); |
41c3cb6d SH |
2202 | if (ret) |
2203 | return ret; | |
2204 | ||
2205 | if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) | |
2206 | return -EFAULT; | |
2207 | ||
2208 | return 0; | |
2209 | } | |
2210 | ||
2f438366 ES |
2211 | static int __ethtool_get_module_eeprom(struct net_device *dev, |
2212 | struct ethtool_eeprom *ee, u8 *data) | |
2213 | { | |
2214 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2215 | struct phy_device *phydev = dev->phydev; | |
2216 | ||
e679c9c1 RK |
2217 | if (dev->sfp_bus) |
2218 | return sfp_get_module_eeprom(dev->sfp_bus, ee, data); | |
2219 | ||
2f438366 ES |
2220 | if (phydev && phydev->drv && phydev->drv->module_eeprom) |
2221 | return phydev->drv->module_eeprom(phydev, ee, data); | |
2222 | ||
2223 | if (ops->get_module_eeprom) | |
2224 | return ops->get_module_eeprom(dev, ee, data); | |
2225 | ||
2226 | return -EOPNOTSUPP; | |
2227 | } | |
2228 | ||
41c3cb6d SH |
2229 | static int ethtool_get_module_eeprom(struct net_device *dev, |
2230 | void __user *useraddr) | |
2231 | { | |
2232 | int ret; | |
2233 | struct ethtool_modinfo modinfo; | |
41c3cb6d | 2234 | |
2f438366 | 2235 | ret = __ethtool_get_module_info(dev, &modinfo); |
41c3cb6d SH |
2236 | if (ret) |
2237 | return ret; | |
2238 | ||
2f438366 ES |
2239 | return ethtool_get_any_eeprom(dev, useraddr, |
2240 | __ethtool_get_module_eeprom, | |
41c3cb6d SH |
2241 | modinfo.eeprom_len); |
2242 | } | |
2243 | ||
f0db9b07 GV |
2244 | static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) |
2245 | { | |
2246 | switch (tuna->id) { | |
2247 | case ETHTOOL_RX_COPYBREAK: | |
1255a505 | 2248 | case ETHTOOL_TX_COPYBREAK: |
f0db9b07 GV |
2249 | if (tuna->len != sizeof(u32) || |
2250 | tuna->type_id != ETHTOOL_TUNABLE_U32) | |
2251 | return -EINVAL; | |
2252 | break; | |
e1577c1c IK |
2253 | case ETHTOOL_PFC_PREVENTION_TOUT: |
2254 | if (tuna->len != sizeof(u16) || | |
2255 | tuna->type_id != ETHTOOL_TUNABLE_U16) | |
2256 | return -EINVAL; | |
2257 | break; | |
f0db9b07 GV |
2258 | default: |
2259 | return -EINVAL; | |
2260 | } | |
2261 | ||
2262 | return 0; | |
2263 | } | |
2264 | ||
2265 | static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) | |
2266 | { | |
2267 | int ret; | |
2268 | struct ethtool_tunable tuna; | |
2269 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2270 | void *data; | |
2271 | ||
2272 | if (!ops->get_tunable) | |
2273 | return -EOPNOTSUPP; | |
2274 | if (copy_from_user(&tuna, useraddr, sizeof(tuna))) | |
2275 | return -EFAULT; | |
2276 | ret = ethtool_tunable_valid(&tuna); | |
2277 | if (ret) | |
2278 | return ret; | |
2279 | data = kmalloc(tuna.len, GFP_USER); | |
2280 | if (!data) | |
2281 | return -ENOMEM; | |
2282 | ret = ops->get_tunable(dev, &tuna, data); | |
2283 | if (ret) | |
2284 | goto out; | |
2285 | useraddr += sizeof(tuna); | |
2286 | ret = -EFAULT; | |
2287 | if (copy_to_user(useraddr, data, tuna.len)) | |
2288 | goto out; | |
2289 | ret = 0; | |
2290 | ||
2291 | out: | |
2292 | kfree(data); | |
2293 | return ret; | |
2294 | } | |
2295 | ||
2296 | static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) | |
2297 | { | |
2298 | int ret; | |
2299 | struct ethtool_tunable tuna; | |
2300 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2301 | void *data; | |
2302 | ||
2303 | if (!ops->set_tunable) | |
2304 | return -EOPNOTSUPP; | |
2305 | if (copy_from_user(&tuna, useraddr, sizeof(tuna))) | |
2306 | return -EFAULT; | |
2307 | ret = ethtool_tunable_valid(&tuna); | |
2308 | if (ret) | |
2309 | return ret; | |
f0db9b07 | 2310 | useraddr += sizeof(tuna); |
30e7e3ec AV |
2311 | data = memdup_user(useraddr, tuna.len); |
2312 | if (IS_ERR(data)) | |
2313 | return PTR_ERR(data); | |
f0db9b07 GV |
2314 | ret = ops->set_tunable(dev, &tuna, data); |
2315 | ||
f0db9b07 GV |
2316 | kfree(data); |
2317 | return ret; | |
2318 | } | |
2319 | ||
421797b1 KL |
2320 | static int ethtool_get_per_queue_coalesce(struct net_device *dev, |
2321 | void __user *useraddr, | |
2322 | struct ethtool_per_queue_op *per_queue_opt) | |
2323 | { | |
2324 | u32 bit; | |
2325 | int ret; | |
2326 | DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); | |
2327 | ||
2328 | if (!dev->ethtool_ops->get_per_queue_coalesce) | |
2329 | return -EOPNOTSUPP; | |
2330 | ||
2331 | useraddr += sizeof(*per_queue_opt); | |
2332 | ||
3aa56885 YN |
2333 | bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, |
2334 | MAX_NUM_QUEUE); | |
421797b1 KL |
2335 | |
2336 | for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { | |
2337 | struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; | |
2338 | ||
2339 | ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); | |
2340 | if (ret != 0) | |
2341 | return ret; | |
2342 | if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) | |
2343 | return -EFAULT; | |
2344 | useraddr += sizeof(coalesce); | |
2345 | } | |
2346 | ||
2347 | return 0; | |
2348 | } | |
2349 | ||
f38d138a KL |
2350 | static int ethtool_set_per_queue_coalesce(struct net_device *dev, |
2351 | void __user *useraddr, | |
2352 | struct ethtool_per_queue_op *per_queue_opt) | |
2353 | { | |
2354 | u32 bit; | |
2355 | int i, ret = 0; | |
2356 | int n_queue; | |
2357 | struct ethtool_coalesce *backup = NULL, *tmp = NULL; | |
2358 | DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); | |
2359 | ||
2360 | if ((!dev->ethtool_ops->set_per_queue_coalesce) || | |
2361 | (!dev->ethtool_ops->get_per_queue_coalesce)) | |
2362 | return -EOPNOTSUPP; | |
2363 | ||
2364 | useraddr += sizeof(*per_queue_opt); | |
2365 | ||
3aa56885 | 2366 | bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); |
f38d138a KL |
2367 | n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); |
2368 | tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); | |
2369 | if (!backup) | |
2370 | return -ENOMEM; | |
2371 | ||
2372 | for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { | |
2373 | struct ethtool_coalesce coalesce; | |
2374 | ||
2375 | ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); | |
2376 | if (ret != 0) | |
2377 | goto roll_back; | |
2378 | ||
2379 | tmp++; | |
2380 | ||
2381 | if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { | |
2382 | ret = -EFAULT; | |
2383 | goto roll_back; | |
2384 | } | |
2385 | ||
2386 | ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); | |
2387 | if (ret != 0) | |
2388 | goto roll_back; | |
2389 | ||
2390 | useraddr += sizeof(coalesce); | |
2391 | } | |
2392 | ||
2393 | roll_back: | |
2394 | if (ret != 0) { | |
2395 | tmp = backup; | |
2396 | for_each_set_bit(i, queue_mask, bit) { | |
2397 | dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); | |
2398 | tmp++; | |
2399 | } | |
2400 | } | |
2401 | kfree(backup); | |
2402 | ||
2403 | return ret; | |
2404 | } | |
2405 | ||
58f5bbe3 WW |
2406 | static int ethtool_set_per_queue(struct net_device *dev, |
2407 | void __user *useraddr, u32 sub_cmd) | |
ac2c7ad0 KL |
2408 | { |
2409 | struct ethtool_per_queue_op per_queue_opt; | |
2410 | ||
2411 | if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) | |
2412 | return -EFAULT; | |
2413 | ||
58f5bbe3 WW |
2414 | if (per_queue_opt.sub_command != sub_cmd) |
2415 | return -EINVAL; | |
2416 | ||
ac2c7ad0 | 2417 | switch (per_queue_opt.sub_command) { |
421797b1 KL |
2418 | case ETHTOOL_GCOALESCE: |
2419 | return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); | |
f38d138a KL |
2420 | case ETHTOOL_SCOALESCE: |
2421 | return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); | |
ac2c7ad0 KL |
2422 | default: |
2423 | return -EOPNOTSUPP; | |
2424 | }; | |
2425 | } | |
2426 | ||
968ad9da RL |
2427 | static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) |
2428 | { | |
2429 | switch (tuna->id) { | |
65feddd5 RL |
2430 | case ETHTOOL_PHY_DOWNSHIFT: |
2431 | if (tuna->len != sizeof(u8) || | |
2432 | tuna->type_id != ETHTOOL_TUNABLE_U8) | |
2433 | return -EINVAL; | |
2434 | break; | |
968ad9da RL |
2435 | default: |
2436 | return -EINVAL; | |
2437 | } | |
2438 | ||
2439 | return 0; | |
2440 | } | |
2441 | ||
2442 | static int get_phy_tunable(struct net_device *dev, void __user *useraddr) | |
2443 | { | |
2444 | int ret; | |
2445 | struct ethtool_tunable tuna; | |
2446 | struct phy_device *phydev = dev->phydev; | |
2447 | void *data; | |
2448 | ||
2449 | if (!(phydev && phydev->drv && phydev->drv->get_tunable)) | |
2450 | return -EOPNOTSUPP; | |
2451 | ||
2452 | if (copy_from_user(&tuna, useraddr, sizeof(tuna))) | |
2453 | return -EFAULT; | |
2454 | ret = ethtool_phy_tunable_valid(&tuna); | |
2455 | if (ret) | |
2456 | return ret; | |
2457 | data = kmalloc(tuna.len, GFP_USER); | |
2458 | if (!data) | |
2459 | return -ENOMEM; | |
4b65246b | 2460 | mutex_lock(&phydev->lock); |
968ad9da | 2461 | ret = phydev->drv->get_tunable(phydev, &tuna, data); |
4b65246b | 2462 | mutex_unlock(&phydev->lock); |
968ad9da RL |
2463 | if (ret) |
2464 | goto out; | |
2465 | useraddr += sizeof(tuna); | |
2466 | ret = -EFAULT; | |
2467 | if (copy_to_user(useraddr, data, tuna.len)) | |
2468 | goto out; | |
2469 | ret = 0; | |
2470 | ||
2471 | out: | |
2472 | kfree(data); | |
2473 | return ret; | |
2474 | } | |
2475 | ||
2476 | static int set_phy_tunable(struct net_device *dev, void __user *useraddr) | |
2477 | { | |
2478 | int ret; | |
2479 | struct ethtool_tunable tuna; | |
2480 | struct phy_device *phydev = dev->phydev; | |
2481 | void *data; | |
2482 | ||
2483 | if (!(phydev && phydev->drv && phydev->drv->set_tunable)) | |
2484 | return -EOPNOTSUPP; | |
2485 | if (copy_from_user(&tuna, useraddr, sizeof(tuna))) | |
2486 | return -EFAULT; | |
2487 | ret = ethtool_phy_tunable_valid(&tuna); | |
2488 | if (ret) | |
2489 | return ret; | |
968ad9da | 2490 | useraddr += sizeof(tuna); |
30e7e3ec AV |
2491 | data = memdup_user(useraddr, tuna.len); |
2492 | if (IS_ERR(data)) | |
2493 | return PTR_ERR(data); | |
4b65246b | 2494 | mutex_lock(&phydev->lock); |
968ad9da | 2495 | ret = phydev->drv->set_tunable(phydev, &tuna, data); |
4b65246b | 2496 | mutex_unlock(&phydev->lock); |
968ad9da | 2497 | |
968ad9da RL |
2498 | kfree(data); |
2499 | return ret; | |
2500 | } | |
2501 | ||
1a5f3da2 VSR |
2502 | static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) |
2503 | { | |
2504 | struct ethtool_fecparam fecparam = { ETHTOOL_GFECPARAM }; | |
a6d50512 | 2505 | int rc; |
1a5f3da2 VSR |
2506 | |
2507 | if (!dev->ethtool_ops->get_fecparam) | |
2508 | return -EOPNOTSUPP; | |
2509 | ||
a6d50512 EC |
2510 | rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); |
2511 | if (rc) | |
2512 | return rc; | |
1a5f3da2 VSR |
2513 | |
2514 | if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) | |
2515 | return -EFAULT; | |
2516 | return 0; | |
2517 | } | |
2518 | ||
2519 | static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) | |
2520 | { | |
2521 | struct ethtool_fecparam fecparam; | |
2522 | ||
2523 | if (!dev->ethtool_ops->set_fecparam) | |
2524 | return -EOPNOTSUPP; | |
2525 | ||
2526 | if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) | |
2527 | return -EFAULT; | |
2528 | ||
2529 | return dev->ethtool_ops->set_fecparam(dev, &fecparam); | |
2530 | } | |
2531 | ||
600fed5e | 2532 | /* The main entry point in this file. Called from net/core/dev_ioctl.c */ |
1da177e4 | 2533 | |
881d966b | 2534 | int dev_ethtool(struct net *net, struct ifreq *ifr) |
1da177e4 | 2535 | { |
881d966b | 2536 | struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name); |
1da177e4 | 2537 | void __user *useraddr = ifr->ifr_data; |
ac2c7ad0 | 2538 | u32 ethcmd, sub_cmd; |
1da177e4 | 2539 | int rc; |
b29d3145 | 2540 | netdev_features_t old_features; |
1da177e4 | 2541 | |
1da177e4 LT |
2542 | if (!dev || !netif_device_present(dev)) |
2543 | return -ENODEV; | |
2544 | ||
97f8aefb | 2545 | if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) |
1da177e4 LT |
2546 | return -EFAULT; |
2547 | ||
ac2c7ad0 KL |
2548 | if (ethcmd == ETHTOOL_PERQUEUE) { |
2549 | if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) | |
2550 | return -EFAULT; | |
2551 | } else { | |
2552 | sub_cmd = ethcmd; | |
2553 | } | |
75f3123c | 2554 | /* Allow some commands to be done by anyone */ |
ac2c7ad0 | 2555 | switch (sub_cmd) { |
0fdc100b | 2556 | case ETHTOOL_GSET: |
75f3123c | 2557 | case ETHTOOL_GDRVINFO: |
75f3123c | 2558 | case ETHTOOL_GMSGLVL: |
2da45db2 | 2559 | case ETHTOOL_GLINK: |
75f3123c SH |
2560 | case ETHTOOL_GCOALESCE: |
2561 | case ETHTOOL_GRINGPARAM: | |
2562 | case ETHTOOL_GPAUSEPARAM: | |
2563 | case ETHTOOL_GRXCSUM: | |
2564 | case ETHTOOL_GTXCSUM: | |
2565 | case ETHTOOL_GSG: | |
f80400a2 | 2566 | case ETHTOOL_GSSET_INFO: |
75f3123c | 2567 | case ETHTOOL_GSTRINGS: |
2da45db2 | 2568 | case ETHTOOL_GSTATS: |
f3a40945 | 2569 | case ETHTOOL_GPHYSTATS: |
75f3123c SH |
2570 | case ETHTOOL_GTSO: |
2571 | case ETHTOOL_GPERMADDR: | |
474ff260 | 2572 | case ETHTOOL_GUFO: |
75f3123c | 2573 | case ETHTOOL_GGSO: |
1cab819b | 2574 | case ETHTOOL_GGRO: |
339bf024 JG |
2575 | case ETHTOOL_GFLAGS: |
2576 | case ETHTOOL_GPFLAGS: | |
0853ad66 | 2577 | case ETHTOOL_GRXFH: |
59089d8d SB |
2578 | case ETHTOOL_GRXRINGS: |
2579 | case ETHTOOL_GRXCLSRLCNT: | |
2580 | case ETHTOOL_GRXCLSRULE: | |
2581 | case ETHTOOL_GRXCLSRLALL: | |
2da45db2 | 2582 | case ETHTOOL_GRXFHINDIR: |
3de0b592 | 2583 | case ETHTOOL_GRSSH: |
5455c699 | 2584 | case ETHTOOL_GFEATURES: |
2da45db2 | 2585 | case ETHTOOL_GCHANNELS: |
c8f3a8c3 | 2586 | case ETHTOOL_GET_TS_INFO: |
2da45db2 | 2587 | case ETHTOOL_GEEE: |
f0db9b07 | 2588 | case ETHTOOL_GTUNABLE: |
968ad9da | 2589 | case ETHTOOL_PHY_GTUNABLE: |
8006f6bf | 2590 | case ETHTOOL_GLINKSETTINGS: |
1a5f3da2 | 2591 | case ETHTOOL_GFECPARAM: |
75f3123c SH |
2592 | break; |
2593 | default: | |
5e1fccc0 | 2594 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
75f3123c SH |
2595 | return -EPERM; |
2596 | } | |
2597 | ||
97f8aefb | 2598 | if (dev->ethtool_ops->begin) { |
2599 | rc = dev->ethtool_ops->begin(dev); | |
2600 | if (rc < 0) | |
1da177e4 | 2601 | return rc; |
97f8aefb | 2602 | } |
d8a33ac4 SH |
2603 | old_features = dev->features; |
2604 | ||
1da177e4 LT |
2605 | switch (ethcmd) { |
2606 | case ETHTOOL_GSET: | |
2607 | rc = ethtool_get_settings(dev, useraddr); | |
2608 | break; | |
2609 | case ETHTOOL_SSET: | |
2610 | rc = ethtool_set_settings(dev, useraddr); | |
2611 | break; | |
2612 | case ETHTOOL_GDRVINFO: | |
2613 | rc = ethtool_get_drvinfo(dev, useraddr); | |
1da177e4 LT |
2614 | break; |
2615 | case ETHTOOL_GREGS: | |
2616 | rc = ethtool_get_regs(dev, useraddr); | |
2617 | break; | |
2618 | case ETHTOOL_GWOL: | |
2619 | rc = ethtool_get_wol(dev, useraddr); | |
2620 | break; | |
2621 | case ETHTOOL_SWOL: | |
2622 | rc = ethtool_set_wol(dev, useraddr); | |
2623 | break; | |
2624 | case ETHTOOL_GMSGLVL: | |
13c99b24 JG |
2625 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
2626 | dev->ethtool_ops->get_msglevel); | |
1da177e4 LT |
2627 | break; |
2628 | case ETHTOOL_SMSGLVL: | |
13c99b24 JG |
2629 | rc = ethtool_set_value_void(dev, useraddr, |
2630 | dev->ethtool_ops->set_msglevel); | |
1da177e4 | 2631 | break; |
80f12ecc YM |
2632 | case ETHTOOL_GEEE: |
2633 | rc = ethtool_get_eee(dev, useraddr); | |
2634 | break; | |
2635 | case ETHTOOL_SEEE: | |
2636 | rc = ethtool_set_eee(dev, useraddr); | |
2637 | break; | |
1da177e4 LT |
2638 | case ETHTOOL_NWAY_RST: |
2639 | rc = ethtool_nway_reset(dev); | |
2640 | break; | |
2641 | case ETHTOOL_GLINK: | |
e596e6e4 | 2642 | rc = ethtool_get_link(dev, useraddr); |
1da177e4 LT |
2643 | break; |
2644 | case ETHTOOL_GEEPROM: | |
2645 | rc = ethtool_get_eeprom(dev, useraddr); | |
2646 | break; | |
2647 | case ETHTOOL_SEEPROM: | |
2648 | rc = ethtool_set_eeprom(dev, useraddr); | |
2649 | break; | |
2650 | case ETHTOOL_GCOALESCE: | |
2651 | rc = ethtool_get_coalesce(dev, useraddr); | |
2652 | break; | |
2653 | case ETHTOOL_SCOALESCE: | |
2654 | rc = ethtool_set_coalesce(dev, useraddr); | |
2655 | break; | |
2656 | case ETHTOOL_GRINGPARAM: | |
2657 | rc = ethtool_get_ringparam(dev, useraddr); | |
2658 | break; | |
2659 | case ETHTOOL_SRINGPARAM: | |
2660 | rc = ethtool_set_ringparam(dev, useraddr); | |
2661 | break; | |
2662 | case ETHTOOL_GPAUSEPARAM: | |
2663 | rc = ethtool_get_pauseparam(dev, useraddr); | |
2664 | break; | |
2665 | case ETHTOOL_SPAUSEPARAM: | |
2666 | rc = ethtool_set_pauseparam(dev, useraddr); | |
2667 | break; | |
1da177e4 LT |
2668 | case ETHTOOL_TEST: |
2669 | rc = ethtool_self_test(dev, useraddr); | |
2670 | break; | |
2671 | case ETHTOOL_GSTRINGS: | |
2672 | rc = ethtool_get_strings(dev, useraddr); | |
2673 | break; | |
2674 | case ETHTOOL_PHYS_ID: | |
2675 | rc = ethtool_phys_id(dev, useraddr); | |
2676 | break; | |
2677 | case ETHTOOL_GSTATS: | |
2678 | rc = ethtool_get_stats(dev, useraddr); | |
2679 | break; | |
a6f9a705 JW |
2680 | case ETHTOOL_GPERMADDR: |
2681 | rc = ethtool_get_perm_addr(dev, useraddr); | |
2682 | break; | |
3ae7c0b2 | 2683 | case ETHTOOL_GFLAGS: |
13c99b24 | 2684 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
bc5787c6 | 2685 | __ethtool_get_flags); |
3ae7c0b2 JG |
2686 | break; |
2687 | case ETHTOOL_SFLAGS: | |
da8ac86c | 2688 | rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); |
3ae7c0b2 | 2689 | break; |
339bf024 | 2690 | case ETHTOOL_GPFLAGS: |
13c99b24 JG |
2691 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
2692 | dev->ethtool_ops->get_priv_flags); | |
339bf024 JG |
2693 | break; |
2694 | case ETHTOOL_SPFLAGS: | |
13c99b24 JG |
2695 | rc = ethtool_set_value(dev, useraddr, |
2696 | dev->ethtool_ops->set_priv_flags); | |
339bf024 | 2697 | break; |
0853ad66 | 2698 | case ETHTOOL_GRXFH: |
59089d8d SB |
2699 | case ETHTOOL_GRXRINGS: |
2700 | case ETHTOOL_GRXCLSRLCNT: | |
2701 | case ETHTOOL_GRXCLSRULE: | |
2702 | case ETHTOOL_GRXCLSRLALL: | |
bf988435 | 2703 | rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); |
0853ad66 SB |
2704 | break; |
2705 | case ETHTOOL_SRXFH: | |
59089d8d SB |
2706 | case ETHTOOL_SRXCLSRLDEL: |
2707 | case ETHTOOL_SRXCLSRLINS: | |
bf988435 | 2708 | rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); |
0853ad66 | 2709 | break; |
05c6a8d7 AK |
2710 | case ETHTOOL_FLASHDEV: |
2711 | rc = ethtool_flash_device(dev, useraddr); | |
2712 | break; | |
d73d3a8c BH |
2713 | case ETHTOOL_RESET: |
2714 | rc = ethtool_reset(dev, useraddr); | |
2715 | break; | |
723b2f57 JG |
2716 | case ETHTOOL_GSSET_INFO: |
2717 | rc = ethtool_get_sset_info(dev, useraddr); | |
2718 | break; | |
a5b6ee29 BH |
2719 | case ETHTOOL_GRXFHINDIR: |
2720 | rc = ethtool_get_rxfh_indir(dev, useraddr); | |
2721 | break; | |
2722 | case ETHTOOL_SRXFHINDIR: | |
2723 | rc = ethtool_set_rxfh_indir(dev, useraddr); | |
2724 | break; | |
3de0b592 VD |
2725 | case ETHTOOL_GRSSH: |
2726 | rc = ethtool_get_rxfh(dev, useraddr); | |
2727 | break; | |
2728 | case ETHTOOL_SRSSH: | |
2729 | rc = ethtool_set_rxfh(dev, useraddr); | |
2730 | break; | |
5455c699 MM |
2731 | case ETHTOOL_GFEATURES: |
2732 | rc = ethtool_get_features(dev, useraddr); | |
2733 | break; | |
2734 | case ETHTOOL_SFEATURES: | |
2735 | rc = ethtool_set_features(dev, useraddr); | |
2736 | break; | |
0a417704 | 2737 | case ETHTOOL_GTXCSUM: |
e83d360d | 2738 | case ETHTOOL_GRXCSUM: |
0a417704 MM |
2739 | case ETHTOOL_GSG: |
2740 | case ETHTOOL_GTSO: | |
0a417704 MM |
2741 | case ETHTOOL_GGSO: |
2742 | case ETHTOOL_GGRO: | |
2743 | rc = ethtool_get_one_feature(dev, useraddr, ethcmd); | |
2744 | break; | |
2745 | case ETHTOOL_STXCSUM: | |
e83d360d | 2746 | case ETHTOOL_SRXCSUM: |
0a417704 MM |
2747 | case ETHTOOL_SSG: |
2748 | case ETHTOOL_STSO: | |
0a417704 MM |
2749 | case ETHTOOL_SGSO: |
2750 | case ETHTOOL_SGRO: | |
2751 | rc = ethtool_set_one_feature(dev, useraddr, ethcmd); | |
2752 | break; | |
8b5933c3 | 2753 | case ETHTOOL_GCHANNELS: |
2754 | rc = ethtool_get_channels(dev, useraddr); | |
2755 | break; | |
2756 | case ETHTOOL_SCHANNELS: | |
2757 | rc = ethtool_set_channels(dev, useraddr); | |
2758 | break; | |
29dd54b7 AC |
2759 | case ETHTOOL_SET_DUMP: |
2760 | rc = ethtool_set_dump(dev, useraddr); | |
2761 | break; | |
2762 | case ETHTOOL_GET_DUMP_FLAG: | |
2763 | rc = ethtool_get_dump_flag(dev, useraddr); | |
2764 | break; | |
2765 | case ETHTOOL_GET_DUMP_DATA: | |
2766 | rc = ethtool_get_dump_data(dev, useraddr); | |
2767 | break; | |
c8f3a8c3 RC |
2768 | case ETHTOOL_GET_TS_INFO: |
2769 | rc = ethtool_get_ts_info(dev, useraddr); | |
2770 | break; | |
41c3cb6d SH |
2771 | case ETHTOOL_GMODULEINFO: |
2772 | rc = ethtool_get_module_info(dev, useraddr); | |
2773 | break; | |
2774 | case ETHTOOL_GMODULEEEPROM: | |
2775 | rc = ethtool_get_module_eeprom(dev, useraddr); | |
2776 | break; | |
f0db9b07 GV |
2777 | case ETHTOOL_GTUNABLE: |
2778 | rc = ethtool_get_tunable(dev, useraddr); | |
2779 | break; | |
2780 | case ETHTOOL_STUNABLE: | |
2781 | rc = ethtool_set_tunable(dev, useraddr); | |
2782 | break; | |
f3a40945 AL |
2783 | case ETHTOOL_GPHYSTATS: |
2784 | rc = ethtool_get_phy_stats(dev, useraddr); | |
2785 | break; | |
ac2c7ad0 | 2786 | case ETHTOOL_PERQUEUE: |
58f5bbe3 | 2787 | rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); |
ac2c7ad0 | 2788 | break; |
3f1ac7a7 DD |
2789 | case ETHTOOL_GLINKSETTINGS: |
2790 | rc = ethtool_get_link_ksettings(dev, useraddr); | |
2791 | break; | |
2792 | case ETHTOOL_SLINKSETTINGS: | |
2793 | rc = ethtool_set_link_ksettings(dev, useraddr); | |
2794 | break; | |
968ad9da RL |
2795 | case ETHTOOL_PHY_GTUNABLE: |
2796 | rc = get_phy_tunable(dev, useraddr); | |
2797 | break; | |
2798 | case ETHTOOL_PHY_STUNABLE: | |
2799 | rc = set_phy_tunable(dev, useraddr); | |
2800 | break; | |
1a5f3da2 VSR |
2801 | case ETHTOOL_GFECPARAM: |
2802 | rc = ethtool_get_fecparam(dev, useraddr); | |
2803 | break; | |
2804 | case ETHTOOL_SFECPARAM: | |
2805 | rc = ethtool_set_fecparam(dev, useraddr); | |
2806 | break; | |
1da177e4 | 2807 | default: |
61a44b9c | 2808 | rc = -EOPNOTSUPP; |
1da177e4 | 2809 | } |
4ec93edb | 2810 | |
e71a4783 | 2811 | if (dev->ethtool_ops->complete) |
1da177e4 | 2812 | dev->ethtool_ops->complete(dev); |
d8a33ac4 SH |
2813 | |
2814 | if (old_features != dev->features) | |
2815 | netdev_features_change(dev); | |
2816 | ||
1da177e4 | 2817 | return rc; |
1da177e4 | 2818 | } |