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bnx2x: fill in sane dump flag information
[deliverable/linux.git] / net / core / ethtool.c
CommitLineData
1da177e4
LT		 1/*
2 * net/core/ethtool.c - Ethtool ioctl handler
3 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx>
4 *
5 * This file is where we call all the ethtool_ops commands to get
61a44b9c 6 * the information ethtool needs.
1da177e4 7 *
61a44b9c
MW		 8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
1da177e4
LT		 12 */
13
14#include <linux/module.h>
15#include <linux/types.h>
4fc268d2 16#include <linux/capability.h>
1da177e4
LT		 17#include <linux/errno.h>
18#include <linux/ethtool.h>
19#include <linux/netdevice.h>
c8f3a8c3
RC		 20#include <linux/net_tstamp.h>
21#include <linux/phy.h>
d17792eb 22#include <linux/bitops.h>
97f8aefb 23#include <linux/uaccess.h>
73da16c2 24#include <linux/vmalloc.h>
5a0e3ad6 25#include <linux/slab.h>
68f512f2
BH		 26#include <linux/rtnetlink.h>
27#include <linux/sched.h>
1da177e4 28
4ec93edb 29/*
1da177e4
LT		 30 * Some useful ethtool_ops methods that're device independent.
31 * If we find that all drivers want to do the same thing here,
32 * we can turn these into dev_() function calls.
33 */
34
35u32 ethtool_op_get_link(struct net_device *dev)
36{
37 return netif_carrier_ok(dev) ? 1 : 0;
38}
97f8aefb 39EXPORT_SYMBOL(ethtool_op_get_link);
1da177e4 40
02eacbd0
RC		 41int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info)
42{
43 info->so_timestamping =
44 SOF_TIMESTAMPING_TX_SOFTWARE |
45 SOF_TIMESTAMPING_RX_SOFTWARE |
46 SOF_TIMESTAMPING_SOFTWARE;
47 info->phc_index = -1;
48 return 0;
49}
50EXPORT_SYMBOL(ethtool_op_get_ts_info);
51
1da177e4
LT		 52/* Handlers for each ethtool command */
53
475414f6 54#define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32)
5455c699 55
9d921549
MM		 56static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = {
57 [NETIF_F_SG_BIT] = "tx-scatter-gather",
58 [NETIF_F_IP_CSUM_BIT] = "tx-checksum-ipv4",
9d921549
MM		 59 [NETIF_F_HW_CSUM_BIT] = "tx-checksum-ip-generic",
60 [NETIF_F_IPV6_CSUM_BIT] = "tx-checksum-ipv6",
61 [NETIF_F_HIGHDMA_BIT] = "highdma",
62 [NETIF_F_FRAGLIST_BIT] = "tx-scatter-gather-fraglist",
788dfcac 63 [NETIF_F_HW_VLAN_CTAG_TX_BIT] = "tx-vlan-hw-insert",
9d921549 64
788dfcac
FLVC		 65 [NETIF_F_HW_VLAN_CTAG_RX_BIT] = "rx-vlan-hw-parse",
66 [NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-filter",
2d6577f1
DM		 67 [NETIF_F_HW_VLAN_STAG_TX_BIT] = "tx-vlan-stag-hw-insert",
68 [NETIF_F_HW_VLAN_STAG_RX_BIT] = "rx-vlan-stag-hw-parse",
69 [NETIF_F_HW_VLAN_STAG_FILTER_BIT] = "rx-vlan-stag-filter",
9d921549
MM		 70 [NETIF_F_VLAN_CHALLENGED_BIT] = "vlan-challenged",
71 [NETIF_F_GSO_BIT] = "tx-generic-segmentation",
72 [NETIF_F_LLTX_BIT] = "tx-lockless",
73 [NETIF_F_NETNS_LOCAL_BIT] = "netns-local",
74 [NETIF_F_GRO_BIT] = "rx-gro",
75 [NETIF_F_LRO_BIT] = "rx-lro",
76
77 [NETIF_F_TSO_BIT] = "tx-tcp-segmentation",
78 [NETIF_F_UFO_BIT] = "tx-udp-fragmentation",
79 [NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust",
80 [NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation",
81 [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation",
82 [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation",
68c33163 83 [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation",
73136267 84 [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation",
0d89d203 85 [NETIF_F_GSO_MPLS_BIT] = "tx-mpls-segmentation",
9d921549
MM		 86
87 [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc",
88 [NETIF_F_SCTP_CSUM_BIT] = "tx-checksum-sctp",
89 [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu",
90 [NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter",
91 [NETIF_F_RXHASH_BIT] = "rx-hashing",
92 [NETIF_F_RXCSUM_BIT] = "rx-checksum",
93 [NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy",
94 [NETIF_F_LOOPBACK_BIT] = "loopback",
36eabda3 95 [NETIF_F_RXFCS_BIT] = "rx-fcs",
5e0c03c8 96 [NETIF_F_RXALL_BIT] = "rx-all",
9d921549
MM		 97};
98
5455c699
MM		 99static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
100{
101 struct ethtool_gfeatures cmd = {
102 .cmd = ETHTOOL_GFEATURES,
103 .size = ETHTOOL_DEV_FEATURE_WORDS,
104 };
475414f6 105 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
5455c699
MM		 106 u32 __user *sizeaddr;
107 u32 copy_size;
475414f6
MM		 108 int i;
109
110 /* in case feature bits run out again */
09da71b1 111 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t));
475414f6
MM		 112
113 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
09da71b1
MM		 114 features[i].available = (u32)(dev->hw_features >> (32 * i));
115 features[i].requested = (u32)(dev->wanted_features >> (32 * i));
116 features[i].active = (u32)(dev->features >> (32 * i));
117 features[i].never_changed =
118 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i));
475414f6 119 }
5455c699
MM		 120
121 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
122 if (get_user(copy_size, sizeaddr))
123 return -EFAULT;
124
125 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
126 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
127
128 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
129 return -EFAULT;
130 useraddr += sizeof(cmd);
131 if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
132 return -EFAULT;
133
134 return 0;
135}
136
137static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
138{
139 struct ethtool_sfeatures cmd;
140 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
475414f6
MM		 141 netdev_features_t wanted = 0, valid = 0;
142 int i, ret = 0;
5455c699
MM		 143
144 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
145 return -EFAULT;
146 useraddr += sizeof(cmd);
147
148 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
149 return -EINVAL;
150
151 if (copy_from_user(features, useraddr, sizeof(features)))
152 return -EFAULT;
153
475414f6 154 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
09da71b1
MM		 155 valid |= (netdev_features_t)features[i].valid << (32 * i);
156 wanted |= (netdev_features_t)features[i].requested << (32 * i);
475414f6
MM		 157 }
158
159 if (valid & ~NETIF_F_ETHTOOL_BITS)
5455c699
MM		 160 return -EINVAL;
161
475414f6
MM		 162 if (valid & ~dev->hw_features) {
163 valid &= dev->hw_features;
5455c699
MM		 164 ret |= ETHTOOL_F_UNSUPPORTED;
165 }
166
475414f6
MM		 167 dev->wanted_features &= ~valid;
168 dev->wanted_features |= wanted & valid;
6cb6a27c 169 __netdev_update_features(dev);
5455c699 170
475414f6 171 if ((dev->wanted_features ^ dev->features) & valid)
5455c699
MM		 172 ret |= ETHTOOL_F_WISH;
173
174 return ret;
175}
176
340ae165
MM		 177static int __ethtool_get_sset_count(struct net_device *dev, int sset)
178{
179 const struct ethtool_ops *ops = dev->ethtool_ops;
180
5455c699
MM		 181 if (sset == ETH_SS_FEATURES)
182 return ARRAY_SIZE(netdev_features_strings);
183
c03a14e8 184 if (ops->get_sset_count && ops->get_strings)
340ae165
MM		 185 return ops->get_sset_count(dev, sset);
186 else
187 return -EOPNOTSUPP;
188}
189
190static void __ethtool_get_strings(struct net_device *dev,
191 u32 stringset, u8 *data)
192{
193 const struct ethtool_ops *ops = dev->ethtool_ops;
194
5455c699
MM		 195 if (stringset == ETH_SS_FEATURES)
196 memcpy(data, netdev_features_strings,
197 sizeof(netdev_features_strings));
198 else
199 /* ops->get_strings is valid because checked earlier */
200 ops->get_strings(dev, stringset, data);
340ae165
MM		 201}
202
c8f44aff 203static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd)
0a417704
MM		 204{
205 /* feature masks of legacy discrete ethtool ops */
206
207 switch (eth_cmd) {
208 case ETHTOOL_GTXCSUM:
209 case ETHTOOL_STXCSUM:
210 return NETIF_F_ALL_CSUM | NETIF_F_SCTP_CSUM;
e83d360d
MM		 211 case ETHTOOL_GRXCSUM:
212 case ETHTOOL_SRXCSUM:
213 return NETIF_F_RXCSUM;
0a417704
MM		 214 case ETHTOOL_GSG:
215 case ETHTOOL_SSG:
216 return NETIF_F_SG;
217 case ETHTOOL_GTSO:
218 case ETHTOOL_STSO:
219 return NETIF_F_ALL_TSO;
220 case ETHTOOL_GUFO:
221 case ETHTOOL_SUFO:
222 return NETIF_F_UFO;
223 case ETHTOOL_GGSO:
224 case ETHTOOL_SGSO:
225 return NETIF_F_GSO;
226 case ETHTOOL_GGRO:
227 case ETHTOOL_SGRO:
228 return NETIF_F_GRO;
229 default:
230 BUG();
231 }
232}
233
0a417704
MM		 234static int ethtool_get_one_feature(struct net_device *dev,
235 char __user *useraddr, u32 ethcmd)
236{
c8f44aff 237 netdev_features_t mask = ethtool_get_feature_mask(ethcmd);
0a417704
MM		 238 struct ethtool_value edata = {
239 .cmd = ethcmd,
86794881 240 .data = !!(dev->features & mask),
0a417704 241 };
0a417704 242
0a417704
MM		 243 if (copy_to_user(useraddr, &edata, sizeof(edata)))
244 return -EFAULT;
245 return 0;
246}
247
0a417704
MM		 248static int ethtool_set_one_feature(struct net_device *dev,
249 void __user *useraddr, u32 ethcmd)
250{
251 struct ethtool_value edata;
c8f44aff 252 netdev_features_t mask;
0a417704
MM		 253
254 if (copy_from_user(&edata, useraddr, sizeof(edata)))
255 return -EFAULT;
256
86794881
MM		 257 mask = ethtool_get_feature_mask(ethcmd);
258 mask &= dev->hw_features;
bc5787c6
MM		 259 if (!mask)
260 return -EOPNOTSUPP;
86794881 261
bc5787c6
MM		 262 if (edata.data)
263 dev->wanted_features |= mask;
264 else
265 dev->wanted_features &= ~mask;
86794881 266
bc5787c6 267 __netdev_update_features(dev);
86794881 268
bc5787c6
MM		 269 return 0;
270}
271
02b3a552
MM		 272#define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
273 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
f646968f
PM		 274#define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
275 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
276 NETIF_F_RXHASH)
bc5787c6
MM		 277
278static u32 __ethtool_get_flags(struct net_device *dev)
279{
02b3a552
MM		 280 u32 flags = 0;
281
f646968f
PM		 282 if (dev->features & NETIF_F_LRO) flags |= ETH_FLAG_LRO;
283 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) flags |= ETH_FLAG_RXVLAN;
284 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) flags |= ETH_FLAG_TXVLAN;
285 if (dev->features & NETIF_F_NTUPLE) flags |= ETH_FLAG_NTUPLE;
286 if (dev->features & NETIF_F_RXHASH) flags |= ETH_FLAG_RXHASH;
02b3a552
MM		 287
288 return flags;
0a417704
MM		 289}
290
bc5787c6 291static int __ethtool_set_flags(struct net_device *dev, u32 data)
da8ac86c 292{
c8f44aff 293 netdev_features_t features = 0, changed;
da8ac86c 294
02b3a552 295 if (data & ~ETH_ALL_FLAGS)
da8ac86c
MM		 296 return -EINVAL;
297
02b3a552 298 if (data & ETH_FLAG_LRO) features |= NETIF_F_LRO;
f646968f
PM		 299 if (data & ETH_FLAG_RXVLAN) features |= NETIF_F_HW_VLAN_CTAG_RX;
300 if (data & ETH_FLAG_TXVLAN) features |= NETIF_F_HW_VLAN_CTAG_TX;
02b3a552
MM		 301 if (data & ETH_FLAG_NTUPLE) features |= NETIF_F_NTUPLE;
302 if (data & ETH_FLAG_RXHASH) features |= NETIF_F_RXHASH;
303
da8ac86c 304 /* allow changing only bits set in hw_features */
02b3a552 305 changed = (features ^ dev->features) & ETH_ALL_FEATURES;
da8ac86c
MM		 306 if (changed & ~dev->hw_features)
307 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
308
309 dev->wanted_features =
02b3a552 310 (dev->wanted_features & ~changed) | (features & changed);
da8ac86c 311
6cb6a27c 312 __netdev_update_features(dev);
da8ac86c
MM		 313
314 return 0;
315}
316
4bc71cb9 317int __ethtool_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1da177e4 318{
4bc71cb9 319 ASSERT_RTNL();
1da177e4 320
c03a14e8 321 if (!dev->ethtool_ops->get_settings)
1da177e4
LT		 322 return -EOPNOTSUPP;
323
4bc71cb9
JP		 324 memset(cmd, 0, sizeof(struct ethtool_cmd));
325 cmd->cmd = ETHTOOL_GSET;
326 return dev->ethtool_ops->get_settings(dev, cmd);
327}
328EXPORT_SYMBOL(__ethtool_get_settings);
329
330static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
331{
332 int err;
333 struct ethtool_cmd cmd;
334
335 err = __ethtool_get_settings(dev, &cmd);
1da177e4
LT		 336 if (err < 0)
337 return err;
338
339 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
340 return -EFAULT;
341 return 0;
342}
343
344static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
345{
346 struct ethtool_cmd cmd;
347
348 if (!dev->ethtool_ops->set_settings)
349 return -EOPNOTSUPP;
350
351 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
352 return -EFAULT;
353
354 return dev->ethtool_ops->set_settings(dev, &cmd);
355}
356
97f8aefb 357static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
358 void __user *useraddr)
1da177e4
LT		 359{
360 struct ethtool_drvinfo info;
76fd8593 361 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 362
1da177e4
LT		 363 memset(&info, 0, sizeof(info));
364 info.cmd = ETHTOOL_GDRVINFO;
c03a14e8 365 if (ops->get_drvinfo) {
01414802
BH		 366 ops->get_drvinfo(dev, &info);
367 } else if (dev->dev.parent && dev->dev.parent->driver) {
368 strlcpy(info.bus_info, dev_name(dev->dev.parent),
369 sizeof(info.bus_info));
370 strlcpy(info.driver, dev->dev.parent->driver->name,
371 sizeof(info.driver));
372 } else {
373 return -EOPNOTSUPP;
374 }
1da177e4 375
723b2f57
JG		 376 /*
377 * this method of obtaining string set info is deprecated;
d17792eb 378 * Use ETHTOOL_GSSET_INFO instead.
723b2f57 379 */
c03a14e8 380 if (ops->get_sset_count) {
ff03d49f
JG		 381 int rc;
382
383 rc = ops->get_sset_count(dev, ETH_SS_TEST);
384 if (rc >= 0)
385 info.testinfo_len = rc;
386 rc = ops->get_sset_count(dev, ETH_SS_STATS);
387 if (rc >= 0)
388 info.n_stats = rc;
339bf024
JG		 389 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
390 if (rc >= 0)
391 info.n_priv_flags = rc;
ff03d49f 392 }
c03a14e8 393 if (ops->get_regs_len)
1da177e4 394 info.regdump_len = ops->get_regs_len(dev);
c03a14e8 395 if (ops->get_eeprom_len)
1da177e4
LT		 396 info.eedump_len = ops->get_eeprom_len(dev);
397
398 if (copy_to_user(useraddr, &info, sizeof(info)))
399 return -EFAULT;
400 return 0;
401}
402
f5c445ed 403static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
97f8aefb 404 void __user *useraddr)
723b2f57
JG		 405{
406 struct ethtool_sset_info info;
723b2f57
JG		 407 u64 sset_mask;
408 int i, idx = 0, n_bits = 0, ret, rc;
409 u32 *info_buf = NULL;
410
723b2f57
JG		 411 if (copy_from_user(&info, useraddr, sizeof(info)))
412 return -EFAULT;
413
414 /* store copy of mask, because we zero struct later on */
415 sset_mask = info.sset_mask;
416 if (!sset_mask)
417 return 0;
418
419 /* calculate size of return buffer */
d17792eb 420 n_bits = hweight64(sset_mask);
723b2f57
JG		 421
422 memset(&info, 0, sizeof(info));
423 info.cmd = ETHTOOL_GSSET_INFO;
424
425 info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
426 if (!info_buf)
427 return -ENOMEM;
428
429 /*
430 * fill return buffer based on input bitmask and successful
431 * get_sset_count return
432 */
433 for (i = 0; i < 64; i++) {
434 if (!(sset_mask & (1ULL << i)))
435 continue;
436
340ae165 437 rc = __ethtool_get_sset_count(dev, i);
723b2f57
JG		 438 if (rc >= 0) {
439 info.sset_mask |= (1ULL << i);
440 info_buf[idx++] = rc;
441 }
442 }
443
444 ret = -EFAULT;
445 if (copy_to_user(useraddr, &info, sizeof(info)))
446 goto out;
447
448 useraddr += offsetof(struct ethtool_sset_info, data);
449 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
450 goto out;
451
452 ret = 0;
453
454out:
455 kfree(info_buf);
456 return ret;
457}
458
97f8aefb 459static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
bf988435 460 u32 cmd, void __user *useraddr)
0853ad66 461{
bf988435
BH		 462 struct ethtool_rxnfc info;
463 size_t info_size = sizeof(info);
55664f32 464 int rc;
0853ad66 465
59089d8d 466 if (!dev->ethtool_ops->set_rxnfc)
0853ad66
SB		 467 return -EOPNOTSUPP;
468
bf988435
BH		 469 /* struct ethtool_rxnfc was originally defined for
470 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
471 * members. User-space might still be using that
472 * definition. */
473 if (cmd == ETHTOOL_SRXFH)
474 info_size = (offsetof(struct ethtool_rxnfc, data) +
475 sizeof(info.data));
476
477 if (copy_from_user(&info, useraddr, info_size))
0853ad66
SB		 478 return -EFAULT;
479
55664f32
BH		 480 rc = dev->ethtool_ops->set_rxnfc(dev, &info);
481 if (rc)
482 return rc;
483
484 if (cmd == ETHTOOL_SRXCLSRLINS &&
485 copy_to_user(useraddr, &info, info_size))
486 return -EFAULT;
487
488 return 0;
0853ad66
SB		 489}
490
97f8aefb 491static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
bf988435 492 u32 cmd, void __user *useraddr)
0853ad66
SB		 493{
494 struct ethtool_rxnfc info;
bf988435 495 size_t info_size = sizeof(info);
59089d8d
SB		 496 const struct ethtool_ops *ops = dev->ethtool_ops;
497 int ret;
498 void *rule_buf = NULL;
0853ad66 499
59089d8d 500 if (!ops->get_rxnfc)
0853ad66
SB		 501 return -EOPNOTSUPP;
502
bf988435
BH		 503 /* struct ethtool_rxnfc was originally defined for
504 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
505 * members. User-space might still be using that
506 * definition. */
507 if (cmd == ETHTOOL_GRXFH)
508 info_size = (offsetof(struct ethtool_rxnfc, data) +
509 sizeof(info.data));
510
511 if (copy_from_user(&info, useraddr, info_size))
0853ad66
SB		 512 return -EFAULT;
513
59089d8d
SB		 514 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
515 if (info.rule_cnt > 0) {
db048b69 516 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
ae6df5f9 517 rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
db048b69 518 GFP_USER);
59089d8d
SB		 519 if (!rule_buf)
520 return -ENOMEM;
521 }
522 }
0853ad66 523
59089d8d
SB		 524 ret = ops->get_rxnfc(dev, &info, rule_buf);
525 if (ret < 0)
526 goto err_out;
527
528 ret = -EFAULT;
bf988435 529 if (copy_to_user(useraddr, &info, info_size))
59089d8d
SB		 530 goto err_out;
531
532 if (rule_buf) {
533 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
534 if (copy_to_user(useraddr, rule_buf,
535 info.rule_cnt * sizeof(u32)))
536 goto err_out;
537 }
538 ret = 0;
539
540err_out:
c9caceca 541 kfree(rule_buf);
59089d8d
SB		 542
543 return ret;
0853ad66
SB		 544}
545
a5b6ee29
BH		 546static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
547 void __user *useraddr)
548{
7850f63f
BH		 549 u32 user_size, dev_size;
550 u32 *indir;
a5b6ee29
BH		 551 int ret;
552
7850f63f
BH		 553 if (!dev->ethtool_ops->get_rxfh_indir_size ||
554 !dev->ethtool_ops->get_rxfh_indir)
555 return -EOPNOTSUPP;
556 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
557 if (dev_size == 0)
a5b6ee29
BH		 558 return -EOPNOTSUPP;
559
7850f63f 560 if (copy_from_user(&user_size,
a5b6ee29 561 useraddr + offsetof(struct ethtool_rxfh_indir, size),
7850f63f 562 sizeof(user_size)))
a5b6ee29
BH		 563 return -EFAULT;
564
7850f63f
BH		 565 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
566 &dev_size, sizeof(dev_size)))
567 return -EFAULT;
568
569 /* If the user buffer size is 0, this is just a query for the
570 * device table size. Otherwise, if it's smaller than the
571 * device table size it's an error.
572 */
573 if (user_size < dev_size)
574 return user_size == 0 ? 0 : -EINVAL;
575
576 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
a5b6ee29
BH		 577 if (!indir)
578 return -ENOMEM;
579
a5b6ee29
BH		 580 ret = dev->ethtool_ops->get_rxfh_indir(dev, indir);
581 if (ret)
582 goto out;
583
7850f63f
BH		 584 if (copy_to_user(useraddr +
585 offsetof(struct ethtool_rxfh_indir, ring_index[0]),
586 indir, dev_size * sizeof(indir[0])))
a5b6ee29
BH		 587 ret = -EFAULT;
588
589out:
590 kfree(indir);
591 return ret;
592}
593
594static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
595 void __user *useraddr)
596{
7850f63f
BH		 597 struct ethtool_rxnfc rx_rings;
598 u32 user_size, dev_size, i;
599 u32 *indir;
c03a14e8 600 const struct ethtool_ops *ops = dev->ethtool_ops;
a5b6ee29
BH		 601 int ret;
602
c03a14e8
JP		 603 if (!ops->get_rxfh_indir_size || !ops->set_rxfh_indir ||
604 !ops->get_rxnfc)
7850f63f 605 return -EOPNOTSUPP;
c03a14e8
JP		 606
607 dev_size = ops->get_rxfh_indir_size(dev);
7850f63f 608 if (dev_size == 0)
a5b6ee29
BH		 609 return -EOPNOTSUPP;
610
7850f63f 611 if (copy_from_user(&user_size,
a5b6ee29 612 useraddr + offsetof(struct ethtool_rxfh_indir, size),
7850f63f 613 sizeof(user_size)))
a5b6ee29
BH		 614 return -EFAULT;
615
278bc429 616 if (user_size != 0 && user_size != dev_size)
7850f63f
BH		 617 return -EINVAL;
618
619 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
a5b6ee29
BH		 620 if (!indir)
621 return -ENOMEM;
622
7850f63f 623 rx_rings.cmd = ETHTOOL_GRXRINGS;
c03a14e8 624 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
7850f63f
BH		 625 if (ret)
626 goto out;
278bc429
BH		 627
628 if (user_size == 0) {
629 for (i = 0; i < dev_size; i++)
630 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
631 } else {
632 if (copy_from_user(indir,
633 useraddr +
634 offsetof(struct ethtool_rxfh_indir,
635 ring_index[0]),
636 dev_size * sizeof(indir[0]))) {
637 ret = -EFAULT;
7850f63f
BH		 638 goto out;
639 }
278bc429
BH		 640
641 /* Validate ring indices */
642 for (i = 0; i < dev_size; i++) {
643 if (indir[i] >= rx_rings.data) {
644 ret = -EINVAL;
645 goto out;
646 }
647 }
7850f63f
BH		 648 }
649
c03a14e8 650 ret = ops->set_rxfh_indir(dev, indir);
a5b6ee29
BH		 651
652out:
653 kfree(indir);
654 return ret;
655}
656
1da177e4
LT		 657static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
658{
659 struct ethtool_regs regs;
76fd8593 660 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4
LT		 661 void *regbuf;
662 int reglen, ret;
663
664 if (!ops->get_regs || !ops->get_regs_len)
665 return -EOPNOTSUPP;
666
667 if (copy_from_user(&regs, useraddr, sizeof(regs)))
668 return -EFAULT;
669
670 reglen = ops->get_regs_len(dev);
671 if (regs.len > reglen)
672 regs.len = reglen;
673
b7c7d01a 674 regbuf = vzalloc(reglen);
67ae7cf1 675 if (reglen && !regbuf)
1da177e4
LT		 676 return -ENOMEM;
677
678 ops->get_regs(dev, &regs, regbuf);
679
680 ret = -EFAULT;
681 if (copy_to_user(useraddr, &regs, sizeof(regs)))
682 goto out;
683 useraddr += offsetof(struct ethtool_regs, data);
67ae7cf1 684 if (regbuf && copy_to_user(useraddr, regbuf, regs.len))
1da177e4
LT		 685 goto out;
686 ret = 0;
687
688 out:
a77f5db3 689 vfree(regbuf);
1da177e4
LT		 690 return ret;
691}
692
d73d3a8c
BH		 693static int ethtool_reset(struct net_device *dev, char __user *useraddr)
694{
695 struct ethtool_value reset;
696 int ret;
697
698 if (!dev->ethtool_ops->reset)
699 return -EOPNOTSUPP;
700
701 if (copy_from_user(&reset, useraddr, sizeof(reset)))
702 return -EFAULT;
703
704 ret = dev->ethtool_ops->reset(dev, &reset.data);
705 if (ret)
706 return ret;
707
708 if (copy_to_user(useraddr, &reset, sizeof(reset)))
709 return -EFAULT;
710 return 0;
711}
712
1da177e4
LT		 713static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
714{
8e557421 715 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
1da177e4
LT		 716
717 if (!dev->ethtool_ops->get_wol)
718 return -EOPNOTSUPP;
719
720 dev->ethtool_ops->get_wol(dev, &wol);
721
722 if (copy_to_user(useraddr, &wol, sizeof(wol)))
723 return -EFAULT;
724 return 0;
725}
726
727static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
728{
729 struct ethtool_wolinfo wol;
730
731 if (!dev->ethtool_ops->set_wol)
732 return -EOPNOTSUPP;
733
734 if (copy_from_user(&wol, useraddr, sizeof(wol)))
735 return -EFAULT;
736
737 return dev->ethtool_ops->set_wol(dev, &wol);
738}
739
80f12ecc
YM		 740static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
741{
742 struct ethtool_eee edata;
743 int rc;
744
745 if (!dev->ethtool_ops->get_eee)
746 return -EOPNOTSUPP;
747
748 memset(&edata, 0, sizeof(struct ethtool_eee));
749 edata.cmd = ETHTOOL_GEEE;
750 rc = dev->ethtool_ops->get_eee(dev, &edata);
751
752 if (rc)
753 return rc;
754
755 if (copy_to_user(useraddr, &edata, sizeof(edata)))
756 return -EFAULT;
757
758 return 0;
759}
760
761static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
762{
763 struct ethtool_eee edata;
764
765 if (!dev->ethtool_ops->set_eee)
766 return -EOPNOTSUPP;
767
768 if (copy_from_user(&edata, useraddr, sizeof(edata)))
769 return -EFAULT;
770
771 return dev->ethtool_ops->set_eee(dev, &edata);
772}
773
1da177e4
LT		 774static int ethtool_nway_reset(struct net_device *dev)
775{
776 if (!dev->ethtool_ops->nway_reset)
777 return -EOPNOTSUPP;
778
779 return dev->ethtool_ops->nway_reset(dev);
780}
781
e596e6e4
BH		 782static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
783{
784 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
785
786 if (!dev->ethtool_ops->get_link)
787 return -EOPNOTSUPP;
788
789 edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
790
791 if (copy_to_user(useraddr, &edata, sizeof(edata)))
792 return -EFAULT;
793 return 0;
794}
795
081d094e
BH		 796static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
797 int (*getter)(struct net_device *,
798 struct ethtool_eeprom *, u8 *),
799 u32 total_len)
1da177e4
LT		 800{
801 struct ethtool_eeprom eeprom;
b131dd5d
MSB		 802 void __user *userbuf = useraddr + sizeof(eeprom);
803 u32 bytes_remaining;
1da177e4 804 u8 *data;
b131dd5d 805 int ret = 0;
1da177e4 806
1da177e4
LT		 807 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
808 return -EFAULT;
809
810 /* Check for wrap and zero */
811 if (eeprom.offset + eeprom.len <= eeprom.offset)
812 return -EINVAL;
813
814 /* Check for exceeding total eeprom len */
081d094e 815 if (eeprom.offset + eeprom.len > total_len)
1da177e4
LT		 816 return -EINVAL;
817
b131dd5d 818 data = kmalloc(PAGE_SIZE, GFP_USER);
1da177e4
LT		 819 if (!data)
820 return -ENOMEM;
821
b131dd5d
MSB		 822 bytes_remaining = eeprom.len;
823 while (bytes_remaining > 0) {
824 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
825
081d094e 826 ret = getter(dev, &eeprom, data);
b131dd5d
MSB		 827 if (ret)
828 break;
829 if (copy_to_user(userbuf, data, eeprom.len)) {
830 ret = -EFAULT;
831 break;
832 }
833 userbuf += eeprom.len;
834 eeprom.offset += eeprom.len;
835 bytes_remaining -= eeprom.len;
836 }
1da177e4 837
c5835df9
MSB		 838 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
839 eeprom.offset -= eeprom.len;
840 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
841 ret = -EFAULT;
842
1da177e4
LT		 843 kfree(data);
844 return ret;
845}
846
081d094e
BH		 847static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
848{
849 const struct ethtool_ops *ops = dev->ethtool_ops;
850
851 if (!ops->get_eeprom || !ops->get_eeprom_len)
852 return -EOPNOTSUPP;
853
854 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
855 ops->get_eeprom_len(dev));
856}
857
1da177e4
LT		 858static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
859{
860 struct ethtool_eeprom eeprom;
76fd8593 861 const struct ethtool_ops *ops = dev->ethtool_ops;
b131dd5d
MSB		 862 void __user *userbuf = useraddr + sizeof(eeprom);
863 u32 bytes_remaining;
1da177e4 864 u8 *data;
b131dd5d 865 int ret = 0;
1da177e4
LT		 866
867 if (!ops->set_eeprom || !ops->get_eeprom_len)
868 return -EOPNOTSUPP;
869
870 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
871 return -EFAULT;
872
873 /* Check for wrap and zero */
874 if (eeprom.offset + eeprom.len <= eeprom.offset)
875 return -EINVAL;
876
877 /* Check for exceeding total eeprom len */
878 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
879 return -EINVAL;
880
b131dd5d 881 data = kmalloc(PAGE_SIZE, GFP_USER);
1da177e4
LT		 882 if (!data)
883 return -ENOMEM;
884
b131dd5d
MSB		 885 bytes_remaining = eeprom.len;
886 while (bytes_remaining > 0) {
887 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
888
889 if (copy_from_user(data, userbuf, eeprom.len)) {
890 ret = -EFAULT;
891 break;
892 }
893 ret = ops->set_eeprom(dev, &eeprom, data);
894 if (ret)
895 break;
896 userbuf += eeprom.len;
897 eeprom.offset += eeprom.len;
898 bytes_remaining -= eeprom.len;
899 }
1da177e4 900
1da177e4
LT		 901 kfree(data);
902 return ret;
903}
904
97f8aefb 905static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
906 void __user *useraddr)
1da177e4 907{
8e557421 908 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1da177e4
LT		 909
910 if (!dev->ethtool_ops->get_coalesce)
911 return -EOPNOTSUPP;
912
913 dev->ethtool_ops->get_coalesce(dev, &coalesce);
914
915 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
916 return -EFAULT;
917 return 0;
918}
919
97f8aefb 920static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
921 void __user *useraddr)
1da177e4
LT		 922{
923 struct ethtool_coalesce coalesce;
924
fa04ae5c 925 if (!dev->ethtool_ops->set_coalesce)
1da177e4
LT		 926 return -EOPNOTSUPP;
927
928 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
929 return -EFAULT;
930
931 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
932}
933
934static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
935{
8e557421 936 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1da177e4
LT		 937
938 if (!dev->ethtool_ops->get_ringparam)
939 return -EOPNOTSUPP;
940
941 dev->ethtool_ops->get_ringparam(dev, &ringparam);
942
943 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
944 return -EFAULT;
945 return 0;
946}
947
948static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
949{
950 struct ethtool_ringparam ringparam;
951
952 if (!dev->ethtool_ops->set_ringparam)
953 return -EOPNOTSUPP;
954
955 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
956 return -EFAULT;
957
958 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
959}
960
8b5933c3 961static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
962 void __user *useraddr)
963{
964 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
965
966 if (!dev->ethtool_ops->get_channels)
967 return -EOPNOTSUPP;
968
969 dev->ethtool_ops->get_channels(dev, &channels);
970
971 if (copy_to_user(useraddr, &channels, sizeof(channels)))
972 return -EFAULT;
973 return 0;
974}
975
976static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
977 void __user *useraddr)
978{
979 struct ethtool_channels channels;
980
981 if (!dev->ethtool_ops->set_channels)
982 return -EOPNOTSUPP;
983
984 if (copy_from_user(&channels, useraddr, sizeof(channels)))
985 return -EFAULT;
986
987 return dev->ethtool_ops->set_channels(dev, &channels);
988}
989
1da177e4
LT		 990static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
991{
992 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
993
994 if (!dev->ethtool_ops->get_pauseparam)
995 return -EOPNOTSUPP;
996
997 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
998
999 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1000 return -EFAULT;
1001 return 0;
1002}
1003
1004static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1005{
1006 struct ethtool_pauseparam pauseparam;
1007
e1b90c41 1008 if (!dev->ethtool_ops->set_pauseparam)
1da177e4
LT		 1009 return -EOPNOTSUPP;
1010
1011 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1012 return -EFAULT;
1013
1014 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1015}
1016
1da177e4
LT		 1017static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1018{
1019 struct ethtool_test test;
76fd8593 1020 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 1021 u64 *data;
ff03d49f 1022 int ret, test_len;
1da177e4 1023
a9828ec6 1024 if (!ops->self_test || !ops->get_sset_count)
1da177e4
LT		 1025 return -EOPNOTSUPP;
1026
a9828ec6 1027 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
ff03d49f
JG		 1028 if (test_len < 0)
1029 return test_len;
1030 WARN_ON(test_len == 0);
1031
1da177e4
LT		 1032 if (copy_from_user(&test, useraddr, sizeof(test)))
1033 return -EFAULT;
1034
ff03d49f
JG		 1035 test.len = test_len;
1036 data = kmalloc(test_len * sizeof(u64), GFP_USER);
1da177e4
LT		 1037 if (!data)
1038 return -ENOMEM;
1039
1040 ops->self_test(dev, &test, data);
1041
1042 ret = -EFAULT;
1043 if (copy_to_user(useraddr, &test, sizeof(test)))
1044 goto out;
1045 useraddr += sizeof(test);
1046 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1047 goto out;
1048 ret = 0;
1049
1050 out:
1051 kfree(data);
1052 return ret;
1053}
1054
1055static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1056{
1057 struct ethtool_gstrings gstrings;
1da177e4
LT		 1058 u8 *data;
1059 int ret;
1060
1da177e4
LT		 1061 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1062 return -EFAULT;
1063
340ae165 1064 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
a9828ec6
BH		 1065 if (ret < 0)
1066 return ret;
1067
1068 gstrings.len = ret;
1da177e4
LT		 1069
1070 data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
1071 if (!data)
1072 return -ENOMEM;
1073
340ae165 1074 __ethtool_get_strings(dev, gstrings.string_set, data);
1da177e4
LT		 1075
1076 ret = -EFAULT;
1077 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1078 goto out;
1079 useraddr += sizeof(gstrings);
1080 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1081 goto out;
1082 ret = 0;
1083
340ae165 1084out:
1da177e4
LT		 1085 kfree(data);
1086 return ret;
1087}
1088
1089static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1090{
1091 struct ethtool_value id;
68f512f2 1092 static bool busy;
c03a14e8 1093 const struct ethtool_ops *ops = dev->ethtool_ops;
68f512f2 1094 int rc;
1da177e4 1095
c03a14e8 1096 if (!ops->set_phys_id)
1da177e4
LT		 1097 return -EOPNOTSUPP;
1098
68f512f2
BH		 1099 if (busy)
1100 return -EBUSY;
1101
1da177e4
LT		 1102 if (copy_from_user(&id, useraddr, sizeof(id)))
1103 return -EFAULT;
1104
c03a14e8 1105 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
fce55922 1106 if (rc < 0)
68f512f2
BH		 1107 return rc;
1108
1109 /* Drop the RTNL lock while waiting, but prevent reentry or
1110 * removal of the device.
1111 */
1112 busy = true;
1113 dev_hold(dev);
1114 rtnl_unlock();
1115
1116 if (rc == 0) {
1117 /* Driver will handle this itself */
1118 schedule_timeout_interruptible(
143780c6 1119 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
68f512f2 1120 } else {
fce55922
AB		 1121 /* Driver expects to be called at twice the frequency in rc */
1122 int n = rc * 2, i, interval = HZ / n;
1123
1124 /* Count down seconds */
68f512f2 1125 do {
fce55922
AB		 1126 /* Count down iterations per second */
1127 i = n;
1128 do {
1129 rtnl_lock();
c03a14e8 1130 rc = ops->set_phys_id(dev,
fce55922
AB		 1131 (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
1132 rtnl_unlock();
1133 if (rc)
1134 break;
1135 schedule_timeout_interruptible(interval);
1136 } while (!signal_pending(current) && --i != 0);
68f512f2
BH		 1137 } while (!signal_pending(current) &&
1138 (id.data == 0 || --id.data != 0));
1139 }
1140
1141 rtnl_lock();
1142 dev_put(dev);
1143 busy = false;
1144
c03a14e8 1145 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
68f512f2 1146 return rc;
1da177e4
LT		 1147}
1148
1149static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1150{
1151 struct ethtool_stats stats;
76fd8593 1152 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 1153 u64 *data;
ff03d49f 1154 int ret, n_stats;
1da177e4 1155
a9828ec6 1156 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1da177e4
LT		 1157 return -EOPNOTSUPP;
1158
a9828ec6 1159 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
ff03d49f
JG		 1160 if (n_stats < 0)
1161 return n_stats;
1162 WARN_ON(n_stats == 0);
1163
1da177e4
LT		 1164 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1165 return -EFAULT;
1166
ff03d49f
JG		 1167 stats.n_stats = n_stats;
1168 data = kmalloc(n_stats * sizeof(u64), GFP_USER);
1da177e4
LT		 1169 if (!data)
1170 return -ENOMEM;
1171
1172 ops->get_ethtool_stats(dev, &stats, data);
1173
1174 ret = -EFAULT;
1175 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1176 goto out;
1177 useraddr += sizeof(stats);
1178 if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
1179 goto out;
1180 ret = 0;
1181
1182 out:
1183 kfree(data);
1184 return ret;
1185}
1186
0bf0519d 1187static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
a6f9a705
JW		 1188{
1189 struct ethtool_perm_addr epaddr;
a6f9a705 1190
313674af 1191 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
a6f9a705
JW		 1192 return -EFAULT;
1193
313674af
MW		 1194 if (epaddr.size < dev->addr_len)
1195 return -ETOOSMALL;
1196 epaddr.size = dev->addr_len;
a6f9a705 1197
a6f9a705 1198 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
313674af 1199 return -EFAULT;
a6f9a705 1200 useraddr += sizeof(epaddr);
313674af
MW		 1201 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
1202 return -EFAULT;
1203 return 0;
a6f9a705
JW		 1204}
1205
13c99b24
JG		 1206static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
1207 u32 cmd, u32 (*actor)(struct net_device *))
3ae7c0b2 1208{
8e557421 1209 struct ethtool_value edata = { .cmd = cmd };
3ae7c0b2 1210
13c99b24 1211 if (!actor)
3ae7c0b2
JG		 1212 return -EOPNOTSUPP;
1213
13c99b24 1214 edata.data = actor(dev);
3ae7c0b2
JG		 1215
1216 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1217 return -EFAULT;
1218 return 0;
1219}
1220
13c99b24
JG		 1221static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
1222 void (*actor)(struct net_device *, u32))
3ae7c0b2
JG		 1223{
1224 struct ethtool_value edata;
1225
13c99b24 1226 if (!actor)
3ae7c0b2
JG		 1227 return -EOPNOTSUPP;
1228
1229 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1230 return -EFAULT;
1231
13c99b24 1232 actor(dev, edata.data);
339bf024
JG		 1233 return 0;
1234}
1235
13c99b24
JG		 1236static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
1237 int (*actor)(struct net_device *, u32))
339bf024
JG		 1238{
1239 struct ethtool_value edata;
1240
13c99b24 1241 if (!actor)
339bf024
JG		 1242 return -EOPNOTSUPP;
1243
1244 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1245 return -EFAULT;
1246
13c99b24 1247 return actor(dev, edata.data);
339bf024
JG		 1248}
1249
97f8aefb 1250static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
1251 char __user *useraddr)
05c6a8d7
AK		 1252{
1253 struct ethtool_flash efl;
1254
1255 if (copy_from_user(&efl, useraddr, sizeof(efl)))
1256 return -EFAULT;
1257
1258 if (!dev->ethtool_ops->flash_device)
1259 return -EOPNOTSUPP;
1260
786f5281
BH		 1261 efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
1262
05c6a8d7
AK		 1263 return dev->ethtool_ops->flash_device(dev, &efl);
1264}
1265
29dd54b7
AC		 1266static int ethtool_set_dump(struct net_device *dev,
1267 void __user *useraddr)
1268{
1269 struct ethtool_dump dump;
1270
1271 if (!dev->ethtool_ops->set_dump)
1272 return -EOPNOTSUPP;
1273
1274 if (copy_from_user(&dump, useraddr, sizeof(dump)))
1275 return -EFAULT;
1276
1277 return dev->ethtool_ops->set_dump(dev, &dump);
1278}
1279
1280static int ethtool_get_dump_flag(struct net_device *dev,
1281 void __user *useraddr)
1282{
1283 int ret;
1284 struct ethtool_dump dump;
1285 const struct ethtool_ops *ops = dev->ethtool_ops;
1286
c03a14e8 1287 if (!ops->get_dump_flag)
29dd54b7
AC		 1288 return -EOPNOTSUPP;
1289
1290 if (copy_from_user(&dump, useraddr, sizeof(dump)))
1291 return -EFAULT;
1292
1293 ret = ops->get_dump_flag(dev, &dump);
1294 if (ret)
1295 return ret;
1296
1297 if (copy_to_user(useraddr, &dump, sizeof(dump)))
1298 return -EFAULT;
1299 return 0;
1300}
1301
1302static int ethtool_get_dump_data(struct net_device *dev,
1303 void __user *useraddr)
1304{
1305 int ret;
1306 __u32 len;
1307 struct ethtool_dump dump, tmp;
1308 const struct ethtool_ops *ops = dev->ethtool_ops;
1309 void *data = NULL;
1310
c03a14e8 1311 if (!ops->get_dump_data || !ops->get_dump_flag)
29dd54b7
AC		 1312 return -EOPNOTSUPP;
1313
1314 if (copy_from_user(&dump, useraddr, sizeof(dump)))
1315 return -EFAULT;
1316
1317 memset(&tmp, 0, sizeof(tmp));
1318 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
1319 ret = ops->get_dump_flag(dev, &tmp);
1320 if (ret)
1321 return ret;
1322
1323 len = (tmp.len > dump.len) ? dump.len : tmp.len;
1324 if (!len)
1325 return -EFAULT;
1326
1327 data = vzalloc(tmp.len);
1328 if (!data)
1329 return -ENOMEM;
1330 ret = ops->get_dump_data(dev, &dump, data);
1331 if (ret)
1332 goto out;
1333
1334 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
1335 ret = -EFAULT;
1336 goto out;
1337 }
1338 useraddr += offsetof(struct ethtool_dump, data);
1339 if (copy_to_user(useraddr, data, len))
1340 ret = -EFAULT;
1341out:
1342 vfree(data);
1343 return ret;
1344}
1345
c8f3a8c3
RC		 1346static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
1347{
1348 int err = 0;
1349 struct ethtool_ts_info info;
1350 const struct ethtool_ops *ops = dev->ethtool_ops;
1351 struct phy_device *phydev = dev->phydev;
1352
1353 memset(&info, 0, sizeof(info));
1354 info.cmd = ETHTOOL_GET_TS_INFO;
1355
1356 if (phydev && phydev->drv && phydev->drv->ts_info) {
c8f3a8c3 1357 err = phydev->drv->ts_info(phydev, &info);
c03a14e8 1358 } else if (ops->get_ts_info) {
c8f3a8c3 1359 err = ops->get_ts_info(dev, &info);
c8f3a8c3
RC		 1360 } else {
1361 info.so_timestamping =
1362 SOF_TIMESTAMPING_RX_SOFTWARE |
1363 SOF_TIMESTAMPING_SOFTWARE;
1364 info.phc_index = -1;
1365 }
1366
1367 if (err)
1368 return err;
1369
1370 if (copy_to_user(useraddr, &info, sizeof(info)))
1371 err = -EFAULT;
1372
1373 return err;
1374}
1375
41c3cb6d
SH		 1376static int ethtool_get_module_info(struct net_device *dev,
1377 void __user *useraddr)
1378{
1379 int ret;
1380 struct ethtool_modinfo modinfo;
1381 const struct ethtool_ops *ops = dev->ethtool_ops;
1382
1383 if (!ops->get_module_info)
1384 return -EOPNOTSUPP;
1385
1386 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
1387 return -EFAULT;
1388
1389 ret = ops->get_module_info(dev, &modinfo);
1390 if (ret)
1391 return ret;
1392
1393 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
1394 return -EFAULT;
1395
1396 return 0;
1397}
1398
1399static int ethtool_get_module_eeprom(struct net_device *dev,
1400 void __user *useraddr)
1401{
1402 int ret;
1403 struct ethtool_modinfo modinfo;
1404 const struct ethtool_ops *ops = dev->ethtool_ops;
1405
1406 if (!ops->get_module_info || !ops->get_module_eeprom)
1407 return -EOPNOTSUPP;
1408
1409 ret = ops->get_module_info(dev, &modinfo);
1410 if (ret)
1411 return ret;
1412
1413 return ethtool_get_any_eeprom(dev, useraddr, ops->get_module_eeprom,
1414 modinfo.eeprom_len);
1415}
1416
600fed5e 1417/* The main entry point in this file. Called from net/core/dev_ioctl.c */
1da177e4 1418
881d966b 1419int dev_ethtool(struct net *net, struct ifreq *ifr)
1da177e4 1420{
881d966b 1421 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
1da177e4
LT		 1422 void __user *useraddr = ifr->ifr_data;
1423 u32 ethcmd;
1424 int rc;
b29d3145 1425 netdev_features_t old_features;
1da177e4 1426
1da177e4
LT		 1427 if (!dev || !netif_device_present(dev))
1428 return -ENODEV;
1429
97f8aefb 1430 if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
1da177e4
LT		 1431 return -EFAULT;
1432
75f3123c 1433 /* Allow some commands to be done by anyone */
97f8aefb 1434 switch (ethcmd) {
0fdc100b 1435 case ETHTOOL_GSET:
75f3123c 1436 case ETHTOOL_GDRVINFO:
75f3123c 1437 case ETHTOOL_GMSGLVL:
2da45db2 1438 case ETHTOOL_GLINK:
75f3123c
SH		 1439 case ETHTOOL_GCOALESCE:
1440 case ETHTOOL_GRINGPARAM:
1441 case ETHTOOL_GPAUSEPARAM:
1442 case ETHTOOL_GRXCSUM:
1443 case ETHTOOL_GTXCSUM:
1444 case ETHTOOL_GSG:
f80400a2 1445 case ETHTOOL_GSSET_INFO:
75f3123c 1446 case ETHTOOL_GSTRINGS:
2da45db2 1447 case ETHTOOL_GSTATS:
75f3123c
SH		 1448 case ETHTOOL_GTSO:
1449 case ETHTOOL_GPERMADDR:
1450 case ETHTOOL_GUFO:
1451 case ETHTOOL_GGSO:
1cab819b 1452 case ETHTOOL_GGRO:
339bf024
JG		 1453 case ETHTOOL_GFLAGS:
1454 case ETHTOOL_GPFLAGS:
0853ad66 1455 case ETHTOOL_GRXFH:
59089d8d
SB		 1456 case ETHTOOL_GRXRINGS:
1457 case ETHTOOL_GRXCLSRLCNT:
1458 case ETHTOOL_GRXCLSRULE:
1459 case ETHTOOL_GRXCLSRLALL:
2da45db2 1460 case ETHTOOL_GRXFHINDIR:
5455c699 1461 case ETHTOOL_GFEATURES:
2da45db2 1462 case ETHTOOL_GCHANNELS:
c8f3a8c3 1463 case ETHTOOL_GET_TS_INFO:
2da45db2 1464 case ETHTOOL_GEEE:
75f3123c
SH		 1465 break;
1466 default:
5e1fccc0 1467 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
75f3123c
SH		 1468 return -EPERM;
1469 }
1470
97f8aefb 1471 if (dev->ethtool_ops->begin) {
1472 rc = dev->ethtool_ops->begin(dev);
1473 if (rc < 0)
1da177e4 1474 return rc;
97f8aefb 1475 }
d8a33ac4
SH		 1476 old_features = dev->features;
1477
1da177e4
LT		 1478 switch (ethcmd) {
1479 case ETHTOOL_GSET:
1480 rc = ethtool_get_settings(dev, useraddr);
1481 break;
1482 case ETHTOOL_SSET:
1483 rc = ethtool_set_settings(dev, useraddr);
1484 break;
1485 case ETHTOOL_GDRVINFO:
1486 rc = ethtool_get_drvinfo(dev, useraddr);
1da177e4
LT		 1487 break;
1488 case ETHTOOL_GREGS:
1489 rc = ethtool_get_regs(dev, useraddr);
1490 break;
1491 case ETHTOOL_GWOL:
1492 rc = ethtool_get_wol(dev, useraddr);
1493 break;
1494 case ETHTOOL_SWOL:
1495 rc = ethtool_set_wol(dev, useraddr);
1496 break;
1497 case ETHTOOL_GMSGLVL:
13c99b24
JG		 1498 rc = ethtool_get_value(dev, useraddr, ethcmd,
1499 dev->ethtool_ops->get_msglevel);
1da177e4
LT		 1500 break;
1501 case ETHTOOL_SMSGLVL:
13c99b24
JG		 1502 rc = ethtool_set_value_void(dev, useraddr,
1503 dev->ethtool_ops->set_msglevel);
1da177e4 1504 break;
80f12ecc
YM		 1505 case ETHTOOL_GEEE:
1506 rc = ethtool_get_eee(dev, useraddr);
1507 break;
1508 case ETHTOOL_SEEE:
1509 rc = ethtool_set_eee(dev, useraddr);
1510 break;
1da177e4
LT		 1511 case ETHTOOL_NWAY_RST:
1512 rc = ethtool_nway_reset(dev);
1513 break;
1514 case ETHTOOL_GLINK:
e596e6e4 1515 rc = ethtool_get_link(dev, useraddr);
1da177e4
LT		 1516 break;
1517 case ETHTOOL_GEEPROM:
1518 rc = ethtool_get_eeprom(dev, useraddr);
1519 break;
1520 case ETHTOOL_SEEPROM:
1521 rc = ethtool_set_eeprom(dev, useraddr);
1522 break;
1523 case ETHTOOL_GCOALESCE:
1524 rc = ethtool_get_coalesce(dev, useraddr);
1525 break;
1526 case ETHTOOL_SCOALESCE:
1527 rc = ethtool_set_coalesce(dev, useraddr);
1528 break;
1529 case ETHTOOL_GRINGPARAM:
1530 rc = ethtool_get_ringparam(dev, useraddr);
1531 break;
1532 case ETHTOOL_SRINGPARAM:
1533 rc = ethtool_set_ringparam(dev, useraddr);
1534 break;
1535 case ETHTOOL_GPAUSEPARAM:
1536 rc = ethtool_get_pauseparam(dev, useraddr);
1537 break;
1538 case ETHTOOL_SPAUSEPARAM:
1539 rc = ethtool_set_pauseparam(dev, useraddr);
1540 break;
1da177e4
LT		 1541 case ETHTOOL_TEST:
1542 rc = ethtool_self_test(dev, useraddr);
1543 break;
1544 case ETHTOOL_GSTRINGS:
1545 rc = ethtool_get_strings(dev, useraddr);
1546 break;
1547 case ETHTOOL_PHYS_ID:
1548 rc = ethtool_phys_id(dev, useraddr);
1549 break;
1550 case ETHTOOL_GSTATS:
1551 rc = ethtool_get_stats(dev, useraddr);
1552 break;
a6f9a705
JW		 1553 case ETHTOOL_GPERMADDR:
1554 rc = ethtool_get_perm_addr(dev, useraddr);
1555 break;
3ae7c0b2 1556 case ETHTOOL_GFLAGS:
13c99b24 1557 rc = ethtool_get_value(dev, useraddr, ethcmd,
bc5787c6 1558 __ethtool_get_flags);
3ae7c0b2
JG		 1559 break;
1560 case ETHTOOL_SFLAGS:
da8ac86c 1561 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
3ae7c0b2 1562 break;
339bf024 1563 case ETHTOOL_GPFLAGS:
13c99b24
JG		 1564 rc = ethtool_get_value(dev, useraddr, ethcmd,
1565 dev->ethtool_ops->get_priv_flags);
339bf024
JG		 1566 break;
1567 case ETHTOOL_SPFLAGS:
13c99b24
JG		 1568 rc = ethtool_set_value(dev, useraddr,
1569 dev->ethtool_ops->set_priv_flags);
339bf024 1570 break;
0853ad66 1571 case ETHTOOL_GRXFH:
59089d8d
SB		 1572 case ETHTOOL_GRXRINGS:
1573 case ETHTOOL_GRXCLSRLCNT:
1574 case ETHTOOL_GRXCLSRULE:
1575 case ETHTOOL_GRXCLSRLALL:
bf988435 1576 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
0853ad66
SB		 1577 break;
1578 case ETHTOOL_SRXFH:
59089d8d
SB		 1579 case ETHTOOL_SRXCLSRLDEL:
1580 case ETHTOOL_SRXCLSRLINS:
bf988435 1581 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
0853ad66 1582 break;
05c6a8d7
AK		 1583 case ETHTOOL_FLASHDEV:
1584 rc = ethtool_flash_device(dev, useraddr);
1585 break;
d73d3a8c
BH		 1586 case ETHTOOL_RESET:
1587 rc = ethtool_reset(dev, useraddr);
1588 break;
723b2f57
JG		 1589 case ETHTOOL_GSSET_INFO:
1590 rc = ethtool_get_sset_info(dev, useraddr);
1591 break;
a5b6ee29
BH		 1592 case ETHTOOL_GRXFHINDIR:
1593 rc = ethtool_get_rxfh_indir(dev, useraddr);
1594 break;
1595 case ETHTOOL_SRXFHINDIR:
1596 rc = ethtool_set_rxfh_indir(dev, useraddr);
1597 break;
5455c699
MM		 1598 case ETHTOOL_GFEATURES:
1599 rc = ethtool_get_features(dev, useraddr);
1600 break;
1601 case ETHTOOL_SFEATURES:
1602 rc = ethtool_set_features(dev, useraddr);
1603 break;
0a417704 1604 case ETHTOOL_GTXCSUM:
e83d360d 1605 case ETHTOOL_GRXCSUM:
0a417704
MM		 1606 case ETHTOOL_GSG:
1607 case ETHTOOL_GTSO:
1608 case ETHTOOL_GUFO:
1609 case ETHTOOL_GGSO:
1610 case ETHTOOL_GGRO:
1611 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
1612 break;
1613 case ETHTOOL_STXCSUM:
e83d360d 1614 case ETHTOOL_SRXCSUM:
0a417704
MM		 1615 case ETHTOOL_SSG:
1616 case ETHTOOL_STSO:
1617 case ETHTOOL_SUFO:
1618 case ETHTOOL_SGSO:
1619 case ETHTOOL_SGRO:
1620 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
1621 break;
8b5933c3 1622 case ETHTOOL_GCHANNELS:
1623 rc = ethtool_get_channels(dev, useraddr);
1624 break;
1625 case ETHTOOL_SCHANNELS:
1626 rc = ethtool_set_channels(dev, useraddr);
1627 break;
29dd54b7
AC		 1628 case ETHTOOL_SET_DUMP:
1629 rc = ethtool_set_dump(dev, useraddr);
1630 break;
1631 case ETHTOOL_GET_DUMP_FLAG:
1632 rc = ethtool_get_dump_flag(dev, useraddr);
1633 break;
1634 case ETHTOOL_GET_DUMP_DATA:
1635 rc = ethtool_get_dump_data(dev, useraddr);
1636 break;
c8f3a8c3
RC		 1637 case ETHTOOL_GET_TS_INFO:
1638 rc = ethtool_get_ts_info(dev, useraddr);
1639 break;
41c3cb6d
SH		 1640 case ETHTOOL_GMODULEINFO:
1641 rc = ethtool_get_module_info(dev, useraddr);
1642 break;
1643 case ETHTOOL_GMODULEEEPROM:
1644 rc = ethtool_get_module_eeprom(dev, useraddr);
1645 break;
1da177e4 1646 default:
61a44b9c 1647 rc = -EOPNOTSUPP;
1da177e4 1648 }
4ec93edb 1649
e71a4783 1650 if (dev->ethtool_ops->complete)
1da177e4 1651 dev->ethtool_ops->complete(dev);
d8a33ac4
SH		 1652
1653 if (old_features != dev->features)
1654 netdev_features_change(dev);
1655
1da177e4 1656 return rc;
1da177e4 1657}
Linux kernel - Deliverables
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