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ethtool: Add support for toggling any of the GSO offloads
[deliverable/linux.git] / net / core / ethtool.c
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
6 * the information ethtool needs.
7 *
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.
12 */
13
14 #include <linux/module.h>
15 #include <linux/types.h>
16 #include <linux/capability.h>
17 #include <linux/errno.h>
18 #include <linux/ethtool.h>
19 #include <linux/netdevice.h>
20 #include <linux/net_tstamp.h>
21 #include <linux/phy.h>
22 #include <linux/bitops.h>
23 #include <linux/uaccess.h>
24 #include <linux/vmalloc.h>
25 #include <linux/slab.h>
26 #include <linux/rtnetlink.h>
27 #include <linux/sched.h>
28 #include <linux/net.h>
29
30 /*
31 * Some useful ethtool_ops methods that're device independent.
32 * If we find that all drivers want to do the same thing here,
33 * we can turn these into dev_() function calls.
34 */
35
36 u32 ethtool_op_get_link(struct net_device *dev)
37 {
38 return netif_carrier_ok(dev) ? 1 : 0;
39 }
40 EXPORT_SYMBOL(ethtool_op_get_link);
41
42 int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info)
43 {
44 info->so_timestamping =
45 SOF_TIMESTAMPING_TX_SOFTWARE |
46 SOF_TIMESTAMPING_RX_SOFTWARE |
47 SOF_TIMESTAMPING_SOFTWARE;
48 info->phc_index = -1;
49 return 0;
50 }
51 EXPORT_SYMBOL(ethtool_op_get_ts_info);
52
53 /* Handlers for each ethtool command */
54
55 #define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32)
56
57 static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = {
58 [NETIF_F_SG_BIT] = "tx-scatter-gather",
59 [NETIF_F_IP_CSUM_BIT] = "tx-checksum-ipv4",
60 [NETIF_F_HW_CSUM_BIT] = "tx-checksum-ip-generic",
61 [NETIF_F_IPV6_CSUM_BIT] = "tx-checksum-ipv6",
62 [NETIF_F_HIGHDMA_BIT] = "highdma",
63 [NETIF_F_FRAGLIST_BIT] = "tx-scatter-gather-fraglist",
64 [NETIF_F_HW_VLAN_CTAG_TX_BIT] = "tx-vlan-hw-insert",
65
66 [NETIF_F_HW_VLAN_CTAG_RX_BIT] = "rx-vlan-hw-parse",
67 [NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-filter",
68 [NETIF_F_HW_VLAN_STAG_TX_BIT] = "tx-vlan-stag-hw-insert",
69 [NETIF_F_HW_VLAN_STAG_RX_BIT] = "rx-vlan-stag-hw-parse",
70 [NETIF_F_HW_VLAN_STAG_FILTER_BIT] = "rx-vlan-stag-filter",
71 [NETIF_F_VLAN_CHALLENGED_BIT] = "vlan-challenged",
72 [NETIF_F_GSO_BIT] = "tx-generic-segmentation",
73 [NETIF_F_LLTX_BIT] = "tx-lockless",
74 [NETIF_F_NETNS_LOCAL_BIT] = "netns-local",
75 [NETIF_F_GRO_BIT] = "rx-gro",
76 [NETIF_F_LRO_BIT] = "rx-lro",
77
78 [NETIF_F_TSO_BIT] = "tx-tcp-segmentation",
79 [NETIF_F_UFO_BIT] = "tx-udp-fragmentation",
80 [NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust",
81 [NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation",
82 [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation",
83 [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation",
84 [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation",
85 [NETIF_F_GSO_GRE_CSUM_BIT] = "tx-gre-csum-segmentation",
86 [NETIF_F_GSO_IPIP_BIT] = "tx-ipip-segmentation",
87 [NETIF_F_GSO_SIT_BIT] = "tx-sit-segmentation",
88 [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation",
89 [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation",
90
91 [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc",
92 [NETIF_F_SCTP_CRC_BIT] = "tx-checksum-sctp",
93 [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu",
94 [NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter",
95 [NETIF_F_RXHASH_BIT] = "rx-hashing",
96 [NETIF_F_RXCSUM_BIT] = "rx-checksum",
97 [NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy",
98 [NETIF_F_LOOPBACK_BIT] = "loopback",
99 [NETIF_F_RXFCS_BIT] = "rx-fcs",
100 [NETIF_F_RXALL_BIT] = "rx-all",
101 [NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload",
102 [NETIF_F_BUSY_POLL_BIT] = "busy-poll",
103 [NETIF_F_HW_TC_BIT] = "hw-tc-offload",
104 };
105
106 static const char
107 rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = {
108 [ETH_RSS_HASH_TOP_BIT] = "toeplitz",
109 [ETH_RSS_HASH_XOR_BIT] = "xor",
110 };
111
112 static const char
113 tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
114 [ETHTOOL_ID_UNSPEC] = "Unspec",
115 [ETHTOOL_RX_COPYBREAK] = "rx-copybreak",
116 [ETHTOOL_TX_COPYBREAK] = "tx-copybreak",
117 };
118
119 static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
120 {
121 struct ethtool_gfeatures cmd = {
122 .cmd = ETHTOOL_GFEATURES,
123 .size = ETHTOOL_DEV_FEATURE_WORDS,
124 };
125 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
126 u32 __user *sizeaddr;
127 u32 copy_size;
128 int i;
129
130 /* in case feature bits run out again */
131 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t));
132
133 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
134 features[i].available = (u32)(dev->hw_features >> (32 * i));
135 features[i].requested = (u32)(dev->wanted_features >> (32 * i));
136 features[i].active = (u32)(dev->features >> (32 * i));
137 features[i].never_changed =
138 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i));
139 }
140
141 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
142 if (get_user(copy_size, sizeaddr))
143 return -EFAULT;
144
145 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
146 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
147
148 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
149 return -EFAULT;
150 useraddr += sizeof(cmd);
151 if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
152 return -EFAULT;
153
154 return 0;
155 }
156
157 static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
158 {
159 struct ethtool_sfeatures cmd;
160 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
161 netdev_features_t wanted = 0, valid = 0;
162 int i, ret = 0;
163
164 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
165 return -EFAULT;
166 useraddr += sizeof(cmd);
167
168 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
169 return -EINVAL;
170
171 if (copy_from_user(features, useraddr, sizeof(features)))
172 return -EFAULT;
173
174 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
175 valid |= (netdev_features_t)features[i].valid << (32 * i);
176 wanted |= (netdev_features_t)features[i].requested << (32 * i);
177 }
178
179 if (valid & ~NETIF_F_ETHTOOL_BITS)
180 return -EINVAL;
181
182 if (valid & ~dev->hw_features) {
183 valid &= dev->hw_features;
184 ret |= ETHTOOL_F_UNSUPPORTED;
185 }
186
187 dev->wanted_features &= ~valid;
188 dev->wanted_features |= wanted & valid;
189 __netdev_update_features(dev);
190
191 if ((dev->wanted_features ^ dev->features) & valid)
192 ret |= ETHTOOL_F_WISH;
193
194 return ret;
195 }
196
197 static int phy_get_sset_count(struct phy_device *phydev)
198 {
199 int ret;
200
201 if (phydev->drv->get_sset_count &&
202 phydev->drv->get_strings &&
203 phydev->drv->get_stats) {
204 mutex_lock(&phydev->lock);
205 ret = phydev->drv->get_sset_count(phydev);
206 mutex_unlock(&phydev->lock);
207
208 return ret;
209 }
210
211 return -EOPNOTSUPP;
212 }
213
214 static int __ethtool_get_sset_count(struct net_device *dev, int sset)
215 {
216 const struct ethtool_ops *ops = dev->ethtool_ops;
217
218 if (sset == ETH_SS_FEATURES)
219 return ARRAY_SIZE(netdev_features_strings);
220
221 if (sset == ETH_SS_RSS_HASH_FUNCS)
222 return ARRAY_SIZE(rss_hash_func_strings);
223
224 if (sset == ETH_SS_TUNABLES)
225 return ARRAY_SIZE(tunable_strings);
226
227 if (sset == ETH_SS_PHY_STATS) {
228 if (dev->phydev)
229 return phy_get_sset_count(dev->phydev);
230 else
231 return -EOPNOTSUPP;
232 }
233
234 if (ops->get_sset_count && ops->get_strings)
235 return ops->get_sset_count(dev, sset);
236 else
237 return -EOPNOTSUPP;
238 }
239
240 static void __ethtool_get_strings(struct net_device *dev,
241 u32 stringset, u8 *data)
242 {
243 const struct ethtool_ops *ops = dev->ethtool_ops;
244
245 if (stringset == ETH_SS_FEATURES)
246 memcpy(data, netdev_features_strings,
247 sizeof(netdev_features_strings));
248 else if (stringset == ETH_SS_RSS_HASH_FUNCS)
249 memcpy(data, rss_hash_func_strings,
250 sizeof(rss_hash_func_strings));
251 else if (stringset == ETH_SS_TUNABLES)
252 memcpy(data, tunable_strings, sizeof(tunable_strings));
253 else if (stringset == ETH_SS_PHY_STATS) {
254 struct phy_device *phydev = dev->phydev;
255
256 if (phydev) {
257 mutex_lock(&phydev->lock);
258 phydev->drv->get_strings(phydev, data);
259 mutex_unlock(&phydev->lock);
260 } else {
261 return;
262 }
263 } else
264 /* ops->get_strings is valid because checked earlier */
265 ops->get_strings(dev, stringset, data);
266 }
267
268 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd)
269 {
270 /* feature masks of legacy discrete ethtool ops */
271
272 switch (eth_cmd) {
273 case ETHTOOL_GTXCSUM:
274 case ETHTOOL_STXCSUM:
275 return NETIF_F_CSUM_MASK | NETIF_F_SCTP_CRC;
276 case ETHTOOL_GRXCSUM:
277 case ETHTOOL_SRXCSUM:
278 return NETIF_F_RXCSUM;
279 case ETHTOOL_GSG:
280 case ETHTOOL_SSG:
281 return NETIF_F_SG;
282 case ETHTOOL_GTSO:
283 case ETHTOOL_STSO:
284 return NETIF_F_ALL_TSO;
285 case ETHTOOL_GUFO:
286 case ETHTOOL_SUFO:
287 return NETIF_F_UFO;
288 case ETHTOOL_GGSO:
289 case ETHTOOL_SGSO:
290 return NETIF_F_GSO;
291 case ETHTOOL_GGRO:
292 case ETHTOOL_SGRO:
293 return NETIF_F_GRO;
294 default:
295 BUG();
296 }
297 }
298
299 static int ethtool_get_one_feature(struct net_device *dev,
300 char __user *useraddr, u32 ethcmd)
301 {
302 netdev_features_t mask = ethtool_get_feature_mask(ethcmd);
303 struct ethtool_value edata = {
304 .cmd = ethcmd,
305 .data = !!(dev->features & mask),
306 };
307
308 if (copy_to_user(useraddr, &edata, sizeof(edata)))
309 return -EFAULT;
310 return 0;
311 }
312
313 static int ethtool_set_one_feature(struct net_device *dev,
314 void __user *useraddr, u32 ethcmd)
315 {
316 struct ethtool_value edata;
317 netdev_features_t mask;
318
319 if (copy_from_user(&edata, useraddr, sizeof(edata)))
320 return -EFAULT;
321
322 mask = ethtool_get_feature_mask(ethcmd);
323 mask &= dev->hw_features;
324 if (!mask)
325 return -EOPNOTSUPP;
326
327 if (edata.data)
328 dev->wanted_features |= mask;
329 else
330 dev->wanted_features &= ~mask;
331
332 __netdev_update_features(dev);
333
334 return 0;
335 }
336
337 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
338 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
339 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
340 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
341 NETIF_F_RXHASH)
342
343 static u32 __ethtool_get_flags(struct net_device *dev)
344 {
345 u32 flags = 0;
346
347 if (dev->features & NETIF_F_LRO)
348 flags |= ETH_FLAG_LRO;
349 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
350 flags |= ETH_FLAG_RXVLAN;
351 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX)
352 flags |= ETH_FLAG_TXVLAN;
353 if (dev->features & NETIF_F_NTUPLE)
354 flags |= ETH_FLAG_NTUPLE;
355 if (dev->features & NETIF_F_RXHASH)
356 flags |= ETH_FLAG_RXHASH;
357
358 return flags;
359 }
360
361 static int __ethtool_set_flags(struct net_device *dev, u32 data)
362 {
363 netdev_features_t features = 0, changed;
364
365 if (data & ~ETH_ALL_FLAGS)
366 return -EINVAL;
367
368 if (data & ETH_FLAG_LRO)
369 features |= NETIF_F_LRO;
370 if (data & ETH_FLAG_RXVLAN)
371 features |= NETIF_F_HW_VLAN_CTAG_RX;
372 if (data & ETH_FLAG_TXVLAN)
373 features |= NETIF_F_HW_VLAN_CTAG_TX;
374 if (data & ETH_FLAG_NTUPLE)
375 features |= NETIF_F_NTUPLE;
376 if (data & ETH_FLAG_RXHASH)
377 features |= NETIF_F_RXHASH;
378
379 /* allow changing only bits set in hw_features */
380 changed = (features ^ dev->features) & ETH_ALL_FEATURES;
381 if (changed & ~dev->hw_features)
382 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
383
384 dev->wanted_features =
385 (dev->wanted_features & ~changed) | (features & changed);
386
387 __netdev_update_features(dev);
388
389 return 0;
390 }
391
392 static void convert_legacy_u32_to_link_mode(unsigned long *dst, u32 legacy_u32)
393 {
394 bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS);
395 dst[0] = legacy_u32;
396 }
397
398 /* return false if src had higher bits set. lower bits always updated. */
399 static bool convert_link_mode_to_legacy_u32(u32 *legacy_u32,
400 const unsigned long *src)
401 {
402 bool retval = true;
403
404 /* TODO: following test will soon always be true */
405 if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) {
406 __ETHTOOL_DECLARE_LINK_MODE_MASK(ext);
407
408 bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
409 bitmap_fill(ext, 32);
410 bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
411 if (bitmap_intersects(ext, src,
412 __ETHTOOL_LINK_MODE_MASK_NBITS)) {
413 /* src mask goes beyond bit 31 */
414 retval = false;
415 }
416 }
417 *legacy_u32 = src[0];
418 return retval;
419 }
420
421 /* return false if legacy contained non-0 deprecated fields
422 * transceiver/maxtxpkt/maxrxpkt. rest of ksettings always updated
423 */
424 static bool
425 convert_legacy_settings_to_link_ksettings(
426 struct ethtool_link_ksettings *link_ksettings,
427 const struct ethtool_cmd *legacy_settings)
428 {
429 bool retval = true;
430
431 memset(link_ksettings, 0, sizeof(*link_ksettings));
432
433 /* This is used to tell users that driver is still using these
434 * deprecated legacy fields, and they should not use
435 * %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS
436 */
437 if (legacy_settings->transceiver ||
438 legacy_settings->maxtxpkt ||
439 legacy_settings->maxrxpkt)
440 retval = false;
441
442 convert_legacy_u32_to_link_mode(
443 link_ksettings->link_modes.supported,
444 legacy_settings->supported);
445 convert_legacy_u32_to_link_mode(
446 link_ksettings->link_modes.advertising,
447 legacy_settings->advertising);
448 convert_legacy_u32_to_link_mode(
449 link_ksettings->link_modes.lp_advertising,
450 legacy_settings->lp_advertising);
451 link_ksettings->base.speed
452 = ethtool_cmd_speed(legacy_settings);
453 link_ksettings->base.duplex
454 = legacy_settings->duplex;
455 link_ksettings->base.port
456 = legacy_settings->port;
457 link_ksettings->base.phy_address
458 = legacy_settings->phy_address;
459 link_ksettings->base.autoneg
460 = legacy_settings->autoneg;
461 link_ksettings->base.mdio_support
462 = legacy_settings->mdio_support;
463 link_ksettings->base.eth_tp_mdix
464 = legacy_settings->eth_tp_mdix;
465 link_ksettings->base.eth_tp_mdix_ctrl
466 = legacy_settings->eth_tp_mdix_ctrl;
467 return retval;
468 }
469
470 /* return false if ksettings link modes had higher bits
471 * set. legacy_settings always updated (best effort)
472 */
473 static bool
474 convert_link_ksettings_to_legacy_settings(
475 struct ethtool_cmd *legacy_settings,
476 const struct ethtool_link_ksettings *link_ksettings)
477 {
478 bool retval = true;
479
480 memset(legacy_settings, 0, sizeof(*legacy_settings));
481 /* this also clears the deprecated fields in legacy structure:
482 * __u8 transceiver;
483 * __u32 maxtxpkt;
484 * __u32 maxrxpkt;
485 */
486
487 retval &= convert_link_mode_to_legacy_u32(
488 &legacy_settings->supported,
489 link_ksettings->link_modes.supported);
490 retval &= convert_link_mode_to_legacy_u32(
491 &legacy_settings->advertising,
492 link_ksettings->link_modes.advertising);
493 retval &= convert_link_mode_to_legacy_u32(
494 &legacy_settings->lp_advertising,
495 link_ksettings->link_modes.lp_advertising);
496 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed);
497 legacy_settings->duplex
498 = link_ksettings->base.duplex;
499 legacy_settings->port
500 = link_ksettings->base.port;
501 legacy_settings->phy_address
502 = link_ksettings->base.phy_address;
503 legacy_settings->autoneg
504 = link_ksettings->base.autoneg;
505 legacy_settings->mdio_support
506 = link_ksettings->base.mdio_support;
507 legacy_settings->eth_tp_mdix
508 = link_ksettings->base.eth_tp_mdix;
509 legacy_settings->eth_tp_mdix_ctrl
510 = link_ksettings->base.eth_tp_mdix_ctrl;
511 return retval;
512 }
513
514 /* number of 32-bit words to store the user's link mode bitmaps */
515 #define __ETHTOOL_LINK_MODE_MASK_NU32 \
516 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
517
518 /* layout of the struct passed from/to userland */
519 struct ethtool_link_usettings {
520 struct ethtool_link_settings base;
521 struct {
522 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32];
523 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
524 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
525 } link_modes;
526 };
527
528 /* Internal kernel helper to query a device ethtool_link_settings.
529 *
530 * Backward compatibility note: for compatibility with legacy drivers
531 * that implement only the ethtool_cmd API, this has to work with both
532 * drivers implementing get_link_ksettings API and drivers
533 * implementing get_settings API. When drivers implement get_settings
534 * and report ethtool_cmd deprecated fields
535 * (transceiver/maxrxpkt/maxtxpkt), these fields are silently ignored
536 * because the resulting struct ethtool_link_settings does not report them.
537 */
538 int __ethtool_get_link_ksettings(struct net_device *dev,
539 struct ethtool_link_ksettings *link_ksettings)
540 {
541 int err;
542 struct ethtool_cmd cmd;
543
544 ASSERT_RTNL();
545
546 if (dev->ethtool_ops->get_link_ksettings) {
547 memset(link_ksettings, 0, sizeof(*link_ksettings));
548 return dev->ethtool_ops->get_link_ksettings(dev,
549 link_ksettings);
550 }
551
552 /* driver doesn't support %ethtool_link_ksettings API. revert to
553 * legacy %ethtool_cmd API, unless it's not supported either.
554 * TODO: remove when ethtool_ops::get_settings disappears internally
555 */
556 if (!dev->ethtool_ops->get_settings)
557 return -EOPNOTSUPP;
558
559 memset(&cmd, 0, sizeof(cmd));
560 cmd.cmd = ETHTOOL_GSET;
561 err = dev->ethtool_ops->get_settings(dev, &cmd);
562 if (err < 0)
563 return err;
564
565 /* we ignore deprecated fields transceiver/maxrxpkt/maxtxpkt
566 */
567 convert_legacy_settings_to_link_ksettings(link_ksettings, &cmd);
568 return err;
569 }
570 EXPORT_SYMBOL(__ethtool_get_link_ksettings);
571
572 /* convert ethtool_link_usettings in user space to a kernel internal
573 * ethtool_link_ksettings. return 0 on success, errno on error.
574 */
575 static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to,
576 const void __user *from)
577 {
578 struct ethtool_link_usettings link_usettings;
579
580 if (copy_from_user(&link_usettings, from, sizeof(link_usettings)))
581 return -EFAULT;
582
583 memcpy(&to->base, &link_usettings.base, sizeof(to->base));
584 bitmap_from_u32array(to->link_modes.supported,
585 __ETHTOOL_LINK_MODE_MASK_NBITS,
586 link_usettings.link_modes.supported,
587 __ETHTOOL_LINK_MODE_MASK_NU32);
588 bitmap_from_u32array(to->link_modes.advertising,
589 __ETHTOOL_LINK_MODE_MASK_NBITS,
590 link_usettings.link_modes.advertising,
591 __ETHTOOL_LINK_MODE_MASK_NU32);
592 bitmap_from_u32array(to->link_modes.lp_advertising,
593 __ETHTOOL_LINK_MODE_MASK_NBITS,
594 link_usettings.link_modes.lp_advertising,
595 __ETHTOOL_LINK_MODE_MASK_NU32);
596
597 return 0;
598 }
599
600 /* convert a kernel internal ethtool_link_ksettings to
601 * ethtool_link_usettings in user space. return 0 on success, errno on
602 * error.
603 */
604 static int
605 store_link_ksettings_for_user(void __user *to,
606 const struct ethtool_link_ksettings *from)
607 {
608 struct ethtool_link_usettings link_usettings;
609
610 memcpy(&link_usettings.base, &from->base, sizeof(link_usettings));
611 bitmap_to_u32array(link_usettings.link_modes.supported,
612 __ETHTOOL_LINK_MODE_MASK_NU32,
613 from->link_modes.supported,
614 __ETHTOOL_LINK_MODE_MASK_NBITS);
615 bitmap_to_u32array(link_usettings.link_modes.advertising,
616 __ETHTOOL_LINK_MODE_MASK_NU32,
617 from->link_modes.advertising,
618 __ETHTOOL_LINK_MODE_MASK_NBITS);
619 bitmap_to_u32array(link_usettings.link_modes.lp_advertising,
620 __ETHTOOL_LINK_MODE_MASK_NU32,
621 from->link_modes.lp_advertising,
622 __ETHTOOL_LINK_MODE_MASK_NBITS);
623
624 if (copy_to_user(to, &link_usettings, sizeof(link_usettings)))
625 return -EFAULT;
626
627 return 0;
628 }
629
630 /* Query device for its ethtool_link_settings.
631 *
632 * Backward compatibility note: this function must fail when driver
633 * does not implement ethtool::get_link_ksettings, even if legacy
634 * ethtool_ops::get_settings is implemented. This tells new versions
635 * of ethtool that they should use the legacy API %ETHTOOL_GSET for
636 * this driver, so that they can correctly access the ethtool_cmd
637 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
638 * implements ethtool_ops::get_settings anymore.
639 */
640 static int ethtool_get_link_ksettings(struct net_device *dev,
641 void __user *useraddr)
642 {
643 int err = 0;
644 struct ethtool_link_ksettings link_ksettings;
645
646 ASSERT_RTNL();
647
648 if (!dev->ethtool_ops->get_link_ksettings)
649 return -EOPNOTSUPP;
650
651 /* handle bitmap nbits handshake */
652 if (copy_from_user(&link_ksettings.base, useraddr,
653 sizeof(link_ksettings.base)))
654 return -EFAULT;
655
656 if (__ETHTOOL_LINK_MODE_MASK_NU32
657 != link_ksettings.base.link_mode_masks_nwords) {
658 /* wrong link mode nbits requested */
659 memset(&link_ksettings, 0, sizeof(link_ksettings));
660 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
661 /* send back number of words required as negative val */
662 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX,
663 "need too many bits for link modes!");
664 link_ksettings.base.link_mode_masks_nwords
665 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32);
666
667 /* copy the base fields back to user, not the link
668 * mode bitmaps
669 */
670 if (copy_to_user(useraddr, &link_ksettings.base,
671 sizeof(link_ksettings.base)))
672 return -EFAULT;
673
674 return 0;
675 }
676
677 /* handshake successful: user/kernel agree on
678 * link_mode_masks_nwords
679 */
680
681 memset(&link_ksettings, 0, sizeof(link_ksettings));
682 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
683 if (err < 0)
684 return err;
685
686 /* make sure we tell the right values to user */
687 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
688 link_ksettings.base.link_mode_masks_nwords
689 = __ETHTOOL_LINK_MODE_MASK_NU32;
690
691 return store_link_ksettings_for_user(useraddr, &link_ksettings);
692 }
693
694 /* Update device ethtool_link_settings.
695 *
696 * Backward compatibility note: this function must fail when driver
697 * does not implement ethtool::set_link_ksettings, even if legacy
698 * ethtool_ops::set_settings is implemented. This tells new versions
699 * of ethtool that they should use the legacy API %ETHTOOL_SSET for
700 * this driver, so that they can correctly update the ethtool_cmd
701 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
702 * implements ethtool_ops::get_settings anymore.
703 */
704 static int ethtool_set_link_ksettings(struct net_device *dev,
705 void __user *useraddr)
706 {
707 int err;
708 struct ethtool_link_ksettings link_ksettings;
709
710 ASSERT_RTNL();
711
712 if (!dev->ethtool_ops->set_link_ksettings)
713 return -EOPNOTSUPP;
714
715 /* make sure nbits field has expected value */
716 if (copy_from_user(&link_ksettings.base, useraddr,
717 sizeof(link_ksettings.base)))
718 return -EFAULT;
719
720 if (__ETHTOOL_LINK_MODE_MASK_NU32
721 != link_ksettings.base.link_mode_masks_nwords)
722 return -EINVAL;
723
724 /* copy the whole structure, now that we know it has expected
725 * format
726 */
727 err = load_link_ksettings_from_user(&link_ksettings, useraddr);
728 if (err)
729 return err;
730
731 /* re-check nwords field, just in case */
732 if (__ETHTOOL_LINK_MODE_MASK_NU32
733 != link_ksettings.base.link_mode_masks_nwords)
734 return -EINVAL;
735
736 return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
737 }
738
739 static void
740 warn_incomplete_ethtool_legacy_settings_conversion(const char *details)
741 {
742 char name[sizeof(current->comm)];
743
744 pr_info_once("warning: `%s' uses legacy ethtool link settings API, %s\n",
745 get_task_comm(name, current), details);
746 }
747
748 /* Query device for its ethtool_cmd settings.
749 *
750 * Backward compatibility note: for compatibility with legacy ethtool,
751 * this has to work with both drivers implementing get_link_ksettings
752 * API and drivers implementing get_settings API. When drivers
753 * implement get_link_ksettings and report higher link mode bits, a
754 * kernel warning is logged once (with name of 1st driver/device) to
755 * recommend user to upgrade ethtool, but the command is successful
756 * (only the lower link mode bits reported back to user).
757 */
758 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
759 {
760 struct ethtool_cmd cmd;
761
762 ASSERT_RTNL();
763
764 if (dev->ethtool_ops->get_link_ksettings) {
765 /* First, use link_ksettings API if it is supported */
766 int err;
767 struct ethtool_link_ksettings link_ksettings;
768
769 memset(&link_ksettings, 0, sizeof(link_ksettings));
770 err = dev->ethtool_ops->get_link_ksettings(dev,
771 &link_ksettings);
772 if (err < 0)
773 return err;
774 if (!convert_link_ksettings_to_legacy_settings(&cmd,
775 &link_ksettings))
776 warn_incomplete_ethtool_legacy_settings_conversion(
777 "link modes are only partially reported");
778
779 /* send a sensible cmd tag back to user */
780 cmd.cmd = ETHTOOL_GSET;
781 } else {
782 /* driver doesn't support %ethtool_link_ksettings
783 * API. revert to legacy %ethtool_cmd API, unless it's
784 * not supported either.
785 */
786 int err;
787
788 if (!dev->ethtool_ops->get_settings)
789 return -EOPNOTSUPP;
790
791 memset(&cmd, 0, sizeof(cmd));
792 cmd.cmd = ETHTOOL_GSET;
793 err = dev->ethtool_ops->get_settings(dev, &cmd);
794 if (err < 0)
795 return err;
796 }
797
798 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
799 return -EFAULT;
800
801 return 0;
802 }
803
804 /* Update device link settings with given ethtool_cmd.
805 *
806 * Backward compatibility note: for compatibility with legacy ethtool,
807 * this has to work with both drivers implementing set_link_ksettings
808 * API and drivers implementing set_settings API. When drivers
809 * implement set_link_ksettings and user's request updates deprecated
810 * ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
811 * warning is logged once (with name of 1st driver/device) to
812 * recommend user to upgrade ethtool, and the request is rejected.
813 */
814 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
815 {
816 struct ethtool_cmd cmd;
817
818 ASSERT_RTNL();
819
820 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
821 return -EFAULT;
822
823 /* first, try new %ethtool_link_ksettings API. */
824 if (dev->ethtool_ops->set_link_ksettings) {
825 struct ethtool_link_ksettings link_ksettings;
826
827 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings,
828 &cmd))
829 return -EINVAL;
830
831 link_ksettings.base.cmd = ETHTOOL_SLINKSETTINGS;
832 link_ksettings.base.link_mode_masks_nwords
833 = __ETHTOOL_LINK_MODE_MASK_NU32;
834 return dev->ethtool_ops->set_link_ksettings(dev,
835 &link_ksettings);
836 }
837
838 /* legacy %ethtool_cmd API */
839
840 /* TODO: return -EOPNOTSUPP when ethtool_ops::get_settings
841 * disappears internally
842 */
843
844 if (!dev->ethtool_ops->set_settings)
845 return -EOPNOTSUPP;
846
847 return dev->ethtool_ops->set_settings(dev, &cmd);
848 }
849
850 static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
851 void __user *useraddr)
852 {
853 struct ethtool_drvinfo info;
854 const struct ethtool_ops *ops = dev->ethtool_ops;
855
856 memset(&info, 0, sizeof(info));
857 info.cmd = ETHTOOL_GDRVINFO;
858 if (ops->get_drvinfo) {
859 ops->get_drvinfo(dev, &info);
860 } else if (dev->dev.parent && dev->dev.parent->driver) {
861 strlcpy(info.bus_info, dev_name(dev->dev.parent),
862 sizeof(info.bus_info));
863 strlcpy(info.driver, dev->dev.parent->driver->name,
864 sizeof(info.driver));
865 } else {
866 return -EOPNOTSUPP;
867 }
868
869 /*
870 * this method of obtaining string set info is deprecated;
871 * Use ETHTOOL_GSSET_INFO instead.
872 */
873 if (ops->get_sset_count) {
874 int rc;
875
876 rc = ops->get_sset_count(dev, ETH_SS_TEST);
877 if (rc >= 0)
878 info.testinfo_len = rc;
879 rc = ops->get_sset_count(dev, ETH_SS_STATS);
880 if (rc >= 0)
881 info.n_stats = rc;
882 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
883 if (rc >= 0)
884 info.n_priv_flags = rc;
885 }
886 if (ops->get_regs_len)
887 info.regdump_len = ops->get_regs_len(dev);
888 if (ops->get_eeprom_len)
889 info.eedump_len = ops->get_eeprom_len(dev);
890
891 if (copy_to_user(useraddr, &info, sizeof(info)))
892 return -EFAULT;
893 return 0;
894 }
895
896 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
897 void __user *useraddr)
898 {
899 struct ethtool_sset_info info;
900 u64 sset_mask;
901 int i, idx = 0, n_bits = 0, ret, rc;
902 u32 *info_buf = NULL;
903
904 if (copy_from_user(&info, useraddr, sizeof(info)))
905 return -EFAULT;
906
907 /* store copy of mask, because we zero struct later on */
908 sset_mask = info.sset_mask;
909 if (!sset_mask)
910 return 0;
911
912 /* calculate size of return buffer */
913 n_bits = hweight64(sset_mask);
914
915 memset(&info, 0, sizeof(info));
916 info.cmd = ETHTOOL_GSSET_INFO;
917
918 info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
919 if (!info_buf)
920 return -ENOMEM;
921
922 /*
923 * fill return buffer based on input bitmask and successful
924 * get_sset_count return
925 */
926 for (i = 0; i < 64; i++) {
927 if (!(sset_mask & (1ULL << i)))
928 continue;
929
930 rc = __ethtool_get_sset_count(dev, i);
931 if (rc >= 0) {
932 info.sset_mask |= (1ULL << i);
933 info_buf[idx++] = rc;
934 }
935 }
936
937 ret = -EFAULT;
938 if (copy_to_user(useraddr, &info, sizeof(info)))
939 goto out;
940
941 useraddr += offsetof(struct ethtool_sset_info, data);
942 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
943 goto out;
944
945 ret = 0;
946
947 out:
948 kfree(info_buf);
949 return ret;
950 }
951
952 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
953 u32 cmd, void __user *useraddr)
954 {
955 struct ethtool_rxnfc info;
956 size_t info_size = sizeof(info);
957 int rc;
958
959 if (!dev->ethtool_ops->set_rxnfc)
960 return -EOPNOTSUPP;
961
962 /* struct ethtool_rxnfc was originally defined for
963 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
964 * members. User-space might still be using that
965 * definition. */
966 if (cmd == ETHTOOL_SRXFH)
967 info_size = (offsetof(struct ethtool_rxnfc, data) +
968 sizeof(info.data));
969
970 if (copy_from_user(&info, useraddr, info_size))
971 return -EFAULT;
972
973 rc = dev->ethtool_ops->set_rxnfc(dev, &info);
974 if (rc)
975 return rc;
976
977 if (cmd == ETHTOOL_SRXCLSRLINS &&
978 copy_to_user(useraddr, &info, info_size))
979 return -EFAULT;
980
981 return 0;
982 }
983
984 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
985 u32 cmd, void __user *useraddr)
986 {
987 struct ethtool_rxnfc info;
988 size_t info_size = sizeof(info);
989 const struct ethtool_ops *ops = dev->ethtool_ops;
990 int ret;
991 void *rule_buf = NULL;
992
993 if (!ops->get_rxnfc)
994 return -EOPNOTSUPP;
995
996 /* struct ethtool_rxnfc was originally defined for
997 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
998 * members. User-space might still be using that
999 * definition. */
1000 if (cmd == ETHTOOL_GRXFH)
1001 info_size = (offsetof(struct ethtool_rxnfc, data) +
1002 sizeof(info.data));
1003
1004 if (copy_from_user(&info, useraddr, info_size))
1005 return -EFAULT;
1006
1007 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
1008 if (info.rule_cnt > 0) {
1009 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
1010 rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
1011 GFP_USER);
1012 if (!rule_buf)
1013 return -ENOMEM;
1014 }
1015 }
1016
1017 ret = ops->get_rxnfc(dev, &info, rule_buf);
1018 if (ret < 0)
1019 goto err_out;
1020
1021 ret = -EFAULT;
1022 if (copy_to_user(useraddr, &info, info_size))
1023 goto err_out;
1024
1025 if (rule_buf) {
1026 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
1027 if (copy_to_user(useraddr, rule_buf,
1028 info.rule_cnt * sizeof(u32)))
1029 goto err_out;
1030 }
1031 ret = 0;
1032
1033 err_out:
1034 kfree(rule_buf);
1035
1036 return ret;
1037 }
1038
1039 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr,
1040 struct ethtool_rxnfc *rx_rings,
1041 u32 size)
1042 {
1043 int i;
1044
1045 if (copy_from_user(indir, useraddr, size * sizeof(indir[0])))
1046 return -EFAULT;
1047
1048 /* Validate ring indices */
1049 for (i = 0; i < size; i++)
1050 if (indir[i] >= rx_rings->data)
1051 return -EINVAL;
1052
1053 return 0;
1054 }
1055
1056 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly;
1057
1058 void netdev_rss_key_fill(void *buffer, size_t len)
1059 {
1060 BUG_ON(len > sizeof(netdev_rss_key));
1061 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key));
1062 memcpy(buffer, netdev_rss_key, len);
1063 }
1064 EXPORT_SYMBOL(netdev_rss_key_fill);
1065
1066 static int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max)
1067 {
1068 u32 dev_size, current_max = 0;
1069 u32 *indir;
1070 int ret;
1071
1072 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1073 !dev->ethtool_ops->get_rxfh)
1074 return -EOPNOTSUPP;
1075 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1076 if (dev_size == 0)
1077 return -EOPNOTSUPP;
1078
1079 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1080 if (!indir)
1081 return -ENOMEM;
1082
1083 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1084 if (ret)
1085 goto out;
1086
1087 while (dev_size--)
1088 current_max = max(current_max, indir[dev_size]);
1089
1090 *max = current_max;
1091
1092 out:
1093 kfree(indir);
1094 return ret;
1095 }
1096
1097 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
1098 void __user *useraddr)
1099 {
1100 u32 user_size, dev_size;
1101 u32 *indir;
1102 int ret;
1103
1104 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1105 !dev->ethtool_ops->get_rxfh)
1106 return -EOPNOTSUPP;
1107 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1108 if (dev_size == 0)
1109 return -EOPNOTSUPP;
1110
1111 if (copy_from_user(&user_size,
1112 useraddr + offsetof(struct ethtool_rxfh_indir, size),
1113 sizeof(user_size)))
1114 return -EFAULT;
1115
1116 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
1117 &dev_size, sizeof(dev_size)))
1118 return -EFAULT;
1119
1120 /* If the user buffer size is 0, this is just a query for the
1121 * device table size. Otherwise, if it's smaller than the
1122 * device table size it's an error.
1123 */
1124 if (user_size < dev_size)
1125 return user_size == 0 ? 0 : -EINVAL;
1126
1127 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1128 if (!indir)
1129 return -ENOMEM;
1130
1131 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1132 if (ret)
1133 goto out;
1134
1135 if (copy_to_user(useraddr +
1136 offsetof(struct ethtool_rxfh_indir, ring_index[0]),
1137 indir, dev_size * sizeof(indir[0])))
1138 ret = -EFAULT;
1139
1140 out:
1141 kfree(indir);
1142 return ret;
1143 }
1144
1145 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
1146 void __user *useraddr)
1147 {
1148 struct ethtool_rxnfc rx_rings;
1149 u32 user_size, dev_size, i;
1150 u32 *indir;
1151 const struct ethtool_ops *ops = dev->ethtool_ops;
1152 int ret;
1153 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]);
1154
1155 if (!ops->get_rxfh_indir_size || !ops->set_rxfh ||
1156 !ops->get_rxnfc)
1157 return -EOPNOTSUPP;
1158
1159 dev_size = ops->get_rxfh_indir_size(dev);
1160 if (dev_size == 0)
1161 return -EOPNOTSUPP;
1162
1163 if (copy_from_user(&user_size,
1164 useraddr + offsetof(struct ethtool_rxfh_indir, size),
1165 sizeof(user_size)))
1166 return -EFAULT;
1167
1168 if (user_size != 0 && user_size != dev_size)
1169 return -EINVAL;
1170
1171 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1172 if (!indir)
1173 return -ENOMEM;
1174
1175 rx_rings.cmd = ETHTOOL_GRXRINGS;
1176 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1177 if (ret)
1178 goto out;
1179
1180 if (user_size == 0) {
1181 for (i = 0; i < dev_size; i++)
1182 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1183 } else {
1184 ret = ethtool_copy_validate_indir(indir,
1185 useraddr + ringidx_offset,
1186 &rx_rings,
1187 dev_size);
1188 if (ret)
1189 goto out;
1190 }
1191
1192 ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE);
1193 if (ret)
1194 goto out;
1195
1196 /* indicate whether rxfh was set to default */
1197 if (user_size == 0)
1198 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1199 else
1200 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1201
1202 out:
1203 kfree(indir);
1204 return ret;
1205 }
1206
1207 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
1208 void __user *useraddr)
1209 {
1210 int ret;
1211 const struct ethtool_ops *ops = dev->ethtool_ops;
1212 u32 user_indir_size, user_key_size;
1213 u32 dev_indir_size = 0, dev_key_size = 0;
1214 struct ethtool_rxfh rxfh;
1215 u32 total_size;
1216 u32 indir_bytes;
1217 u32 *indir = NULL;
1218 u8 dev_hfunc = 0;
1219 u8 *hkey = NULL;
1220 u8 *rss_config;
1221
1222 if (!ops->get_rxfh)
1223 return -EOPNOTSUPP;
1224
1225 if (ops->get_rxfh_indir_size)
1226 dev_indir_size = ops->get_rxfh_indir_size(dev);
1227 if (ops->get_rxfh_key_size)
1228 dev_key_size = ops->get_rxfh_key_size(dev);
1229
1230 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
1231 return -EFAULT;
1232 user_indir_size = rxfh.indir_size;
1233 user_key_size = rxfh.key_size;
1234
1235 /* Check that reserved fields are 0 for now */
1236 if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] ||
1237 rxfh.rsvd8[2] || rxfh.rsvd32)
1238 return -EINVAL;
1239
1240 rxfh.indir_size = dev_indir_size;
1241 rxfh.key_size = dev_key_size;
1242 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh)))
1243 return -EFAULT;
1244
1245 if ((user_indir_size && (user_indir_size != dev_indir_size)) ||
1246 (user_key_size && (user_key_size != dev_key_size)))
1247 return -EINVAL;
1248
1249 indir_bytes = user_indir_size * sizeof(indir[0]);
1250 total_size = indir_bytes + user_key_size;
1251 rss_config = kzalloc(total_size, GFP_USER);
1252 if (!rss_config)
1253 return -ENOMEM;
1254
1255 if (user_indir_size)
1256 indir = (u32 *)rss_config;
1257
1258 if (user_key_size)
1259 hkey = rss_config + indir_bytes;
1260
1261 ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc);
1262 if (ret)
1263 goto out;
1264
1265 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc),
1266 &dev_hfunc, sizeof(rxfh.hfunc))) {
1267 ret = -EFAULT;
1268 } else if (copy_to_user(useraddr +
1269 offsetof(struct ethtool_rxfh, rss_config[0]),
1270 rss_config, total_size)) {
1271 ret = -EFAULT;
1272 }
1273 out:
1274 kfree(rss_config);
1275
1276 return ret;
1277 }
1278
1279 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
1280 void __user *useraddr)
1281 {
1282 int ret;
1283 const struct ethtool_ops *ops = dev->ethtool_ops;
1284 struct ethtool_rxnfc rx_rings;
1285 struct ethtool_rxfh rxfh;
1286 u32 dev_indir_size = 0, dev_key_size = 0, i;
1287 u32 *indir = NULL, indir_bytes = 0;
1288 u8 *hkey = NULL;
1289 u8 *rss_config;
1290 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]);
1291
1292 if (!ops->get_rxnfc || !ops->set_rxfh)
1293 return -EOPNOTSUPP;
1294
1295 if (ops->get_rxfh_indir_size)
1296 dev_indir_size = ops->get_rxfh_indir_size(dev);
1297 if (ops->get_rxfh_key_size)
1298 dev_key_size = ops->get_rxfh_key_size(dev);
1299
1300 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
1301 return -EFAULT;
1302
1303 /* Check that reserved fields are 0 for now */
1304 if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] ||
1305 rxfh.rsvd8[2] || rxfh.rsvd32)
1306 return -EINVAL;
1307
1308 /* If either indir, hash key or function is valid, proceed further.
1309 * Must request at least one change: indir size, hash key or function.
1310 */
1311 if ((rxfh.indir_size &&
1312 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE &&
1313 rxfh.indir_size != dev_indir_size) ||
1314 (rxfh.key_size && (rxfh.key_size != dev_key_size)) ||
1315 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE &&
1316 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE))
1317 return -EINVAL;
1318
1319 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1320 indir_bytes = dev_indir_size * sizeof(indir[0]);
1321
1322 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER);
1323 if (!rss_config)
1324 return -ENOMEM;
1325
1326 rx_rings.cmd = ETHTOOL_GRXRINGS;
1327 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1328 if (ret)
1329 goto out;
1330
1331 /* rxfh.indir_size == 0 means reset the indir table to default.
1332 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
1333 */
1334 if (rxfh.indir_size &&
1335 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) {
1336 indir = (u32 *)rss_config;
1337 ret = ethtool_copy_validate_indir(indir,
1338 useraddr + rss_cfg_offset,
1339 &rx_rings,
1340 rxfh.indir_size);
1341 if (ret)
1342 goto out;
1343 } else if (rxfh.indir_size == 0) {
1344 indir = (u32 *)rss_config;
1345 for (i = 0; i < dev_indir_size; i++)
1346 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1347 }
1348
1349 if (rxfh.key_size) {
1350 hkey = rss_config + indir_bytes;
1351 if (copy_from_user(hkey,
1352 useraddr + rss_cfg_offset + indir_bytes,
1353 rxfh.key_size)) {
1354 ret = -EFAULT;
1355 goto out;
1356 }
1357 }
1358
1359 ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc);
1360 if (ret)
1361 goto out;
1362
1363 /* indicate whether rxfh was set to default */
1364 if (rxfh.indir_size == 0)
1365 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1366 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1367 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1368
1369 out:
1370 kfree(rss_config);
1371 return ret;
1372 }
1373
1374 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
1375 {
1376 struct ethtool_regs regs;
1377 const struct ethtool_ops *ops = dev->ethtool_ops;
1378 void *regbuf;
1379 int reglen, ret;
1380
1381 if (!ops->get_regs || !ops->get_regs_len)
1382 return -EOPNOTSUPP;
1383
1384 if (copy_from_user(&regs, useraddr, sizeof(regs)))
1385 return -EFAULT;
1386
1387 reglen = ops->get_regs_len(dev);
1388 if (regs.len > reglen)
1389 regs.len = reglen;
1390
1391 regbuf = vzalloc(reglen);
1392 if (reglen && !regbuf)
1393 return -ENOMEM;
1394
1395 ops->get_regs(dev, &regs, regbuf);
1396
1397 ret = -EFAULT;
1398 if (copy_to_user(useraddr, &regs, sizeof(regs)))
1399 goto out;
1400 useraddr += offsetof(struct ethtool_regs, data);
1401 if (regbuf && copy_to_user(useraddr, regbuf, regs.len))
1402 goto out;
1403 ret = 0;
1404
1405 out:
1406 vfree(regbuf);
1407 return ret;
1408 }
1409
1410 static int ethtool_reset(struct net_device *dev, char __user *useraddr)
1411 {
1412 struct ethtool_value reset;
1413 int ret;
1414
1415 if (!dev->ethtool_ops->reset)
1416 return -EOPNOTSUPP;
1417
1418 if (copy_from_user(&reset, useraddr, sizeof(reset)))
1419 return -EFAULT;
1420
1421 ret = dev->ethtool_ops->reset(dev, &reset.data);
1422 if (ret)
1423 return ret;
1424
1425 if (copy_to_user(useraddr, &reset, sizeof(reset)))
1426 return -EFAULT;
1427 return 0;
1428 }
1429
1430 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
1431 {
1432 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
1433
1434 if (!dev->ethtool_ops->get_wol)
1435 return -EOPNOTSUPP;
1436
1437 dev->ethtool_ops->get_wol(dev, &wol);
1438
1439 if (copy_to_user(useraddr, &wol, sizeof(wol)))
1440 return -EFAULT;
1441 return 0;
1442 }
1443
1444 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
1445 {
1446 struct ethtool_wolinfo wol;
1447
1448 if (!dev->ethtool_ops->set_wol)
1449 return -EOPNOTSUPP;
1450
1451 if (copy_from_user(&wol, useraddr, sizeof(wol)))
1452 return -EFAULT;
1453
1454 return dev->ethtool_ops->set_wol(dev, &wol);
1455 }
1456
1457 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
1458 {
1459 struct ethtool_eee edata;
1460 int rc;
1461
1462 if (!dev->ethtool_ops->get_eee)
1463 return -EOPNOTSUPP;
1464
1465 memset(&edata, 0, sizeof(struct ethtool_eee));
1466 edata.cmd = ETHTOOL_GEEE;
1467 rc = dev->ethtool_ops->get_eee(dev, &edata);
1468
1469 if (rc)
1470 return rc;
1471
1472 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1473 return -EFAULT;
1474
1475 return 0;
1476 }
1477
1478 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
1479 {
1480 struct ethtool_eee edata;
1481
1482 if (!dev->ethtool_ops->set_eee)
1483 return -EOPNOTSUPP;
1484
1485 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1486 return -EFAULT;
1487
1488 return dev->ethtool_ops->set_eee(dev, &edata);
1489 }
1490
1491 static int ethtool_nway_reset(struct net_device *dev)
1492 {
1493 if (!dev->ethtool_ops->nway_reset)
1494 return -EOPNOTSUPP;
1495
1496 return dev->ethtool_ops->nway_reset(dev);
1497 }
1498
1499 static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
1500 {
1501 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
1502
1503 if (!dev->ethtool_ops->get_link)
1504 return -EOPNOTSUPP;
1505
1506 edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
1507
1508 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1509 return -EFAULT;
1510 return 0;
1511 }
1512
1513 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
1514 int (*getter)(struct net_device *,
1515 struct ethtool_eeprom *, u8 *),
1516 u32 total_len)
1517 {
1518 struct ethtool_eeprom eeprom;
1519 void __user *userbuf = useraddr + sizeof(eeprom);
1520 u32 bytes_remaining;
1521 u8 *data;
1522 int ret = 0;
1523
1524 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1525 return -EFAULT;
1526
1527 /* Check for wrap and zero */
1528 if (eeprom.offset + eeprom.len <= eeprom.offset)
1529 return -EINVAL;
1530
1531 /* Check for exceeding total eeprom len */
1532 if (eeprom.offset + eeprom.len > total_len)
1533 return -EINVAL;
1534
1535 data = kmalloc(PAGE_SIZE, GFP_USER);
1536 if (!data)
1537 return -ENOMEM;
1538
1539 bytes_remaining = eeprom.len;
1540 while (bytes_remaining > 0) {
1541 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1542
1543 ret = getter(dev, &eeprom, data);
1544 if (ret)
1545 break;
1546 if (copy_to_user(userbuf, data, eeprom.len)) {
1547 ret = -EFAULT;
1548 break;
1549 }
1550 userbuf += eeprom.len;
1551 eeprom.offset += eeprom.len;
1552 bytes_remaining -= eeprom.len;
1553 }
1554
1555 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
1556 eeprom.offset -= eeprom.len;
1557 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
1558 ret = -EFAULT;
1559
1560 kfree(data);
1561 return ret;
1562 }
1563
1564 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
1565 {
1566 const struct ethtool_ops *ops = dev->ethtool_ops;
1567
1568 if (!ops->get_eeprom || !ops->get_eeprom_len ||
1569 !ops->get_eeprom_len(dev))
1570 return -EOPNOTSUPP;
1571
1572 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
1573 ops->get_eeprom_len(dev));
1574 }
1575
1576 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
1577 {
1578 struct ethtool_eeprom eeprom;
1579 const struct ethtool_ops *ops = dev->ethtool_ops;
1580 void __user *userbuf = useraddr + sizeof(eeprom);
1581 u32 bytes_remaining;
1582 u8 *data;
1583 int ret = 0;
1584
1585 if (!ops->set_eeprom || !ops->get_eeprom_len ||
1586 !ops->get_eeprom_len(dev))
1587 return -EOPNOTSUPP;
1588
1589 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1590 return -EFAULT;
1591
1592 /* Check for wrap and zero */
1593 if (eeprom.offset + eeprom.len <= eeprom.offset)
1594 return -EINVAL;
1595
1596 /* Check for exceeding total eeprom len */
1597 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1598 return -EINVAL;
1599
1600 data = kmalloc(PAGE_SIZE, GFP_USER);
1601 if (!data)
1602 return -ENOMEM;
1603
1604 bytes_remaining = eeprom.len;
1605 while (bytes_remaining > 0) {
1606 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1607
1608 if (copy_from_user(data, userbuf, eeprom.len)) {
1609 ret = -EFAULT;
1610 break;
1611 }
1612 ret = ops->set_eeprom(dev, &eeprom, data);
1613 if (ret)
1614 break;
1615 userbuf += eeprom.len;
1616 eeprom.offset += eeprom.len;
1617 bytes_remaining -= eeprom.len;
1618 }
1619
1620 kfree(data);
1621 return ret;
1622 }
1623
1624 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1625 void __user *useraddr)
1626 {
1627 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1628
1629 if (!dev->ethtool_ops->get_coalesce)
1630 return -EOPNOTSUPP;
1631
1632 dev->ethtool_ops->get_coalesce(dev, &coalesce);
1633
1634 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1635 return -EFAULT;
1636 return 0;
1637 }
1638
1639 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1640 void __user *useraddr)
1641 {
1642 struct ethtool_coalesce coalesce;
1643
1644 if (!dev->ethtool_ops->set_coalesce)
1645 return -EOPNOTSUPP;
1646
1647 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1648 return -EFAULT;
1649
1650 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
1651 }
1652
1653 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1654 {
1655 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1656
1657 if (!dev->ethtool_ops->get_ringparam)
1658 return -EOPNOTSUPP;
1659
1660 dev->ethtool_ops->get_ringparam(dev, &ringparam);
1661
1662 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1663 return -EFAULT;
1664 return 0;
1665 }
1666
1667 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1668 {
1669 struct ethtool_ringparam ringparam;
1670
1671 if (!dev->ethtool_ops->set_ringparam)
1672 return -EOPNOTSUPP;
1673
1674 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1675 return -EFAULT;
1676
1677 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
1678 }
1679
1680 static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
1681 void __user *useraddr)
1682 {
1683 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
1684
1685 if (!dev->ethtool_ops->get_channels)
1686 return -EOPNOTSUPP;
1687
1688 dev->ethtool_ops->get_channels(dev, &channels);
1689
1690 if (copy_to_user(useraddr, &channels, sizeof(channels)))
1691 return -EFAULT;
1692 return 0;
1693 }
1694
1695 static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
1696 void __user *useraddr)
1697 {
1698 struct ethtool_channels channels, max;
1699 u32 max_rx_in_use = 0;
1700
1701 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels)
1702 return -EOPNOTSUPP;
1703
1704 if (copy_from_user(&channels, useraddr, sizeof(channels)))
1705 return -EFAULT;
1706
1707 dev->ethtool_ops->get_channels(dev, &max);
1708
1709 /* ensure new counts are within the maximums */
1710 if ((channels.rx_count > max.max_rx) ||
1711 (channels.tx_count > max.max_tx) ||
1712 (channels.combined_count > max.max_combined) ||
1713 (channels.other_count > max.max_other))
1714 return -EINVAL;
1715
1716 /* ensure the new Rx count fits within the configured Rx flow
1717 * indirection table settings */
1718 if (netif_is_rxfh_configured(dev) &&
1719 !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) &&
1720 (channels.combined_count + channels.rx_count) <= max_rx_in_use)
1721 return -EINVAL;
1722
1723 return dev->ethtool_ops->set_channels(dev, &channels);
1724 }
1725
1726 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1727 {
1728 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
1729
1730 if (!dev->ethtool_ops->get_pauseparam)
1731 return -EOPNOTSUPP;
1732
1733 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1734
1735 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1736 return -EFAULT;
1737 return 0;
1738 }
1739
1740 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1741 {
1742 struct ethtool_pauseparam pauseparam;
1743
1744 if (!dev->ethtool_ops->set_pauseparam)
1745 return -EOPNOTSUPP;
1746
1747 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1748 return -EFAULT;
1749
1750 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1751 }
1752
1753 static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1754 {
1755 struct ethtool_test test;
1756 const struct ethtool_ops *ops = dev->ethtool_ops;
1757 u64 *data;
1758 int ret, test_len;
1759
1760 if (!ops->self_test || !ops->get_sset_count)
1761 return -EOPNOTSUPP;
1762
1763 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
1764 if (test_len < 0)
1765 return test_len;
1766 WARN_ON(test_len == 0);
1767
1768 if (copy_from_user(&test, useraddr, sizeof(test)))
1769 return -EFAULT;
1770
1771 test.len = test_len;
1772 data = kmalloc(test_len * sizeof(u64), GFP_USER);
1773 if (!data)
1774 return -ENOMEM;
1775
1776 ops->self_test(dev, &test, data);
1777
1778 ret = -EFAULT;
1779 if (copy_to_user(useraddr, &test, sizeof(test)))
1780 goto out;
1781 useraddr += sizeof(test);
1782 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1783 goto out;
1784 ret = 0;
1785
1786 out:
1787 kfree(data);
1788 return ret;
1789 }
1790
1791 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1792 {
1793 struct ethtool_gstrings gstrings;
1794 u8 *data;
1795 int ret;
1796
1797 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1798 return -EFAULT;
1799
1800 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
1801 if (ret < 0)
1802 return ret;
1803
1804 gstrings.len = ret;
1805
1806 data = kcalloc(gstrings.len, ETH_GSTRING_LEN, GFP_USER);
1807 if (!data)
1808 return -ENOMEM;
1809
1810 __ethtool_get_strings(dev, gstrings.string_set, data);
1811
1812 ret = -EFAULT;
1813 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1814 goto out;
1815 useraddr += sizeof(gstrings);
1816 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1817 goto out;
1818 ret = 0;
1819
1820 out:
1821 kfree(data);
1822 return ret;
1823 }
1824
1825 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1826 {
1827 struct ethtool_value id;
1828 static bool busy;
1829 const struct ethtool_ops *ops = dev->ethtool_ops;
1830 int rc;
1831
1832 if (!ops->set_phys_id)
1833 return -EOPNOTSUPP;
1834
1835 if (busy)
1836 return -EBUSY;
1837
1838 if (copy_from_user(&id, useraddr, sizeof(id)))
1839 return -EFAULT;
1840
1841 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
1842 if (rc < 0)
1843 return rc;
1844
1845 /* Drop the RTNL lock while waiting, but prevent reentry or
1846 * removal of the device.
1847 */
1848 busy = true;
1849 dev_hold(dev);
1850 rtnl_unlock();
1851
1852 if (rc == 0) {
1853 /* Driver will handle this itself */
1854 schedule_timeout_interruptible(
1855 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
1856 } else {
1857 /* Driver expects to be called at twice the frequency in rc */
1858 int n = rc * 2, i, interval = HZ / n;
1859
1860 /* Count down seconds */
1861 do {
1862 /* Count down iterations per second */
1863 i = n;
1864 do {
1865 rtnl_lock();
1866 rc = ops->set_phys_id(dev,
1867 (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
1868 rtnl_unlock();
1869 if (rc)
1870 break;
1871 schedule_timeout_interruptible(interval);
1872 } while (!signal_pending(current) && --i != 0);
1873 } while (!signal_pending(current) &&
1874 (id.data == 0 || --id.data != 0));
1875 }
1876
1877 rtnl_lock();
1878 dev_put(dev);
1879 busy = false;
1880
1881 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
1882 return rc;
1883 }
1884
1885 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1886 {
1887 struct ethtool_stats stats;
1888 const struct ethtool_ops *ops = dev->ethtool_ops;
1889 u64 *data;
1890 int ret, n_stats;
1891
1892 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1893 return -EOPNOTSUPP;
1894
1895 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
1896 if (n_stats < 0)
1897 return n_stats;
1898 WARN_ON(n_stats == 0);
1899
1900 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1901 return -EFAULT;
1902
1903 stats.n_stats = n_stats;
1904 data = kmalloc(n_stats * sizeof(u64), GFP_USER);
1905 if (!data)
1906 return -ENOMEM;
1907
1908 ops->get_ethtool_stats(dev, &stats, data);
1909
1910 ret = -EFAULT;
1911 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1912 goto out;
1913 useraddr += sizeof(stats);
1914 if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
1915 goto out;
1916 ret = 0;
1917
1918 out:
1919 kfree(data);
1920 return ret;
1921 }
1922
1923 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
1924 {
1925 struct ethtool_stats stats;
1926 struct phy_device *phydev = dev->phydev;
1927 u64 *data;
1928 int ret, n_stats;
1929
1930 if (!phydev)
1931 return -EOPNOTSUPP;
1932
1933 n_stats = phy_get_sset_count(phydev);
1934
1935 if (n_stats < 0)
1936 return n_stats;
1937 WARN_ON(n_stats == 0);
1938
1939 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1940 return -EFAULT;
1941
1942 stats.n_stats = n_stats;
1943 data = kmalloc_array(n_stats, sizeof(u64), GFP_USER);
1944 if (!data)
1945 return -ENOMEM;
1946
1947 mutex_lock(&phydev->lock);
1948 phydev->drv->get_stats(phydev, &stats, data);
1949 mutex_unlock(&phydev->lock);
1950
1951 ret = -EFAULT;
1952 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1953 goto out;
1954 useraddr += sizeof(stats);
1955 if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
1956 goto out;
1957 ret = 0;
1958
1959 out:
1960 kfree(data);
1961 return ret;
1962 }
1963
1964 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
1965 {
1966 struct ethtool_perm_addr epaddr;
1967
1968 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
1969 return -EFAULT;
1970
1971 if (epaddr.size < dev->addr_len)
1972 return -ETOOSMALL;
1973 epaddr.size = dev->addr_len;
1974
1975 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
1976 return -EFAULT;
1977 useraddr += sizeof(epaddr);
1978 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
1979 return -EFAULT;
1980 return 0;
1981 }
1982
1983 static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
1984 u32 cmd, u32 (*actor)(struct net_device *))
1985 {
1986 struct ethtool_value edata = { .cmd = cmd };
1987
1988 if (!actor)
1989 return -EOPNOTSUPP;
1990
1991 edata.data = actor(dev);
1992
1993 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1994 return -EFAULT;
1995 return 0;
1996 }
1997
1998 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
1999 void (*actor)(struct net_device *, u32))
2000 {
2001 struct ethtool_value edata;
2002
2003 if (!actor)
2004 return -EOPNOTSUPP;
2005
2006 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2007 return -EFAULT;
2008
2009 actor(dev, edata.data);
2010 return 0;
2011 }
2012
2013 static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
2014 int (*actor)(struct net_device *, u32))
2015 {
2016 struct ethtool_value edata;
2017
2018 if (!actor)
2019 return -EOPNOTSUPP;
2020
2021 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2022 return -EFAULT;
2023
2024 return actor(dev, edata.data);
2025 }
2026
2027 static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
2028 char __user *useraddr)
2029 {
2030 struct ethtool_flash efl;
2031
2032 if (copy_from_user(&efl, useraddr, sizeof(efl)))
2033 return -EFAULT;
2034
2035 if (!dev->ethtool_ops->flash_device)
2036 return -EOPNOTSUPP;
2037
2038 efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
2039
2040 return dev->ethtool_ops->flash_device(dev, &efl);
2041 }
2042
2043 static int ethtool_set_dump(struct net_device *dev,
2044 void __user *useraddr)
2045 {
2046 struct ethtool_dump dump;
2047
2048 if (!dev->ethtool_ops->set_dump)
2049 return -EOPNOTSUPP;
2050
2051 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2052 return -EFAULT;
2053
2054 return dev->ethtool_ops->set_dump(dev, &dump);
2055 }
2056
2057 static int ethtool_get_dump_flag(struct net_device *dev,
2058 void __user *useraddr)
2059 {
2060 int ret;
2061 struct ethtool_dump dump;
2062 const struct ethtool_ops *ops = dev->ethtool_ops;
2063
2064 if (!ops->get_dump_flag)
2065 return -EOPNOTSUPP;
2066
2067 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2068 return -EFAULT;
2069
2070 ret = ops->get_dump_flag(dev, &dump);
2071 if (ret)
2072 return ret;
2073
2074 if (copy_to_user(useraddr, &dump, sizeof(dump)))
2075 return -EFAULT;
2076 return 0;
2077 }
2078
2079 static int ethtool_get_dump_data(struct net_device *dev,
2080 void __user *useraddr)
2081 {
2082 int ret;
2083 __u32 len;
2084 struct ethtool_dump dump, tmp;
2085 const struct ethtool_ops *ops = dev->ethtool_ops;
2086 void *data = NULL;
2087
2088 if (!ops->get_dump_data || !ops->get_dump_flag)
2089 return -EOPNOTSUPP;
2090
2091 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2092 return -EFAULT;
2093
2094 memset(&tmp, 0, sizeof(tmp));
2095 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
2096 ret = ops->get_dump_flag(dev, &tmp);
2097 if (ret)
2098 return ret;
2099
2100 len = min(tmp.len, dump.len);
2101 if (!len)
2102 return -EFAULT;
2103
2104 /* Don't ever let the driver think there's more space available
2105 * than it requested with .get_dump_flag().
2106 */
2107 dump.len = len;
2108
2109 /* Always allocate enough space to hold the whole thing so that the
2110 * driver does not need to check the length and bother with partial
2111 * dumping.
2112 */
2113 data = vzalloc(tmp.len);
2114 if (!data)
2115 return -ENOMEM;
2116 ret = ops->get_dump_data(dev, &dump, data);
2117 if (ret)
2118 goto out;
2119
2120 /* There are two sane possibilities:
2121 * 1. The driver's .get_dump_data() does not touch dump.len.
2122 * 2. Or it may set dump.len to how much it really writes, which
2123 * should be tmp.len (or len if it can do a partial dump).
2124 * In any case respond to userspace with the actual length of data
2125 * it's receiving.
2126 */
2127 WARN_ON(dump.len != len && dump.len != tmp.len);
2128 dump.len = len;
2129
2130 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
2131 ret = -EFAULT;
2132 goto out;
2133 }
2134 useraddr += offsetof(struct ethtool_dump, data);
2135 if (copy_to_user(useraddr, data, len))
2136 ret = -EFAULT;
2137 out:
2138 vfree(data);
2139 return ret;
2140 }
2141
2142 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
2143 {
2144 int err = 0;
2145 struct ethtool_ts_info info;
2146 const struct ethtool_ops *ops = dev->ethtool_ops;
2147 struct phy_device *phydev = dev->phydev;
2148
2149 memset(&info, 0, sizeof(info));
2150 info.cmd = ETHTOOL_GET_TS_INFO;
2151
2152 if (phydev && phydev->drv && phydev->drv->ts_info) {
2153 err = phydev->drv->ts_info(phydev, &info);
2154 } else if (ops->get_ts_info) {
2155 err = ops->get_ts_info(dev, &info);
2156 } else {
2157 info.so_timestamping =
2158 SOF_TIMESTAMPING_RX_SOFTWARE |
2159 SOF_TIMESTAMPING_SOFTWARE;
2160 info.phc_index = -1;
2161 }
2162
2163 if (err)
2164 return err;
2165
2166 if (copy_to_user(useraddr, &info, sizeof(info)))
2167 err = -EFAULT;
2168
2169 return err;
2170 }
2171
2172 static int __ethtool_get_module_info(struct net_device *dev,
2173 struct ethtool_modinfo *modinfo)
2174 {
2175 const struct ethtool_ops *ops = dev->ethtool_ops;
2176 struct phy_device *phydev = dev->phydev;
2177
2178 if (phydev && phydev->drv && phydev->drv->module_info)
2179 return phydev->drv->module_info(phydev, modinfo);
2180
2181 if (ops->get_module_info)
2182 return ops->get_module_info(dev, modinfo);
2183
2184 return -EOPNOTSUPP;
2185 }
2186
2187 static int ethtool_get_module_info(struct net_device *dev,
2188 void __user *useraddr)
2189 {
2190 int ret;
2191 struct ethtool_modinfo modinfo;
2192
2193 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
2194 return -EFAULT;
2195
2196 ret = __ethtool_get_module_info(dev, &modinfo);
2197 if (ret)
2198 return ret;
2199
2200 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
2201 return -EFAULT;
2202
2203 return 0;
2204 }
2205
2206 static int __ethtool_get_module_eeprom(struct net_device *dev,
2207 struct ethtool_eeprom *ee, u8 *data)
2208 {
2209 const struct ethtool_ops *ops = dev->ethtool_ops;
2210 struct phy_device *phydev = dev->phydev;
2211
2212 if (phydev && phydev->drv && phydev->drv->module_eeprom)
2213 return phydev->drv->module_eeprom(phydev, ee, data);
2214
2215 if (ops->get_module_eeprom)
2216 return ops->get_module_eeprom(dev, ee, data);
2217
2218 return -EOPNOTSUPP;
2219 }
2220
2221 static int ethtool_get_module_eeprom(struct net_device *dev,
2222 void __user *useraddr)
2223 {
2224 int ret;
2225 struct ethtool_modinfo modinfo;
2226
2227 ret = __ethtool_get_module_info(dev, &modinfo);
2228 if (ret)
2229 return ret;
2230
2231 return ethtool_get_any_eeprom(dev, useraddr,
2232 __ethtool_get_module_eeprom,
2233 modinfo.eeprom_len);
2234 }
2235
2236 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna)
2237 {
2238 switch (tuna->id) {
2239 case ETHTOOL_RX_COPYBREAK:
2240 case ETHTOOL_TX_COPYBREAK:
2241 if (tuna->len != sizeof(u32) ||
2242 tuna->type_id != ETHTOOL_TUNABLE_U32)
2243 return -EINVAL;
2244 break;
2245 default:
2246 return -EINVAL;
2247 }
2248
2249 return 0;
2250 }
2251
2252 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr)
2253 {
2254 int ret;
2255 struct ethtool_tunable tuna;
2256 const struct ethtool_ops *ops = dev->ethtool_ops;
2257 void *data;
2258
2259 if (!ops->get_tunable)
2260 return -EOPNOTSUPP;
2261 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2262 return -EFAULT;
2263 ret = ethtool_tunable_valid(&tuna);
2264 if (ret)
2265 return ret;
2266 data = kmalloc(tuna.len, GFP_USER);
2267 if (!data)
2268 return -ENOMEM;
2269 ret = ops->get_tunable(dev, &tuna, data);
2270 if (ret)
2271 goto out;
2272 useraddr += sizeof(tuna);
2273 ret = -EFAULT;
2274 if (copy_to_user(useraddr, data, tuna.len))
2275 goto out;
2276 ret = 0;
2277
2278 out:
2279 kfree(data);
2280 return ret;
2281 }
2282
2283 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr)
2284 {
2285 int ret;
2286 struct ethtool_tunable tuna;
2287 const struct ethtool_ops *ops = dev->ethtool_ops;
2288 void *data;
2289
2290 if (!ops->set_tunable)
2291 return -EOPNOTSUPP;
2292 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2293 return -EFAULT;
2294 ret = ethtool_tunable_valid(&tuna);
2295 if (ret)
2296 return ret;
2297 data = kmalloc(tuna.len, GFP_USER);
2298 if (!data)
2299 return -ENOMEM;
2300 useraddr += sizeof(tuna);
2301 ret = -EFAULT;
2302 if (copy_from_user(data, useraddr, tuna.len))
2303 goto out;
2304 ret = ops->set_tunable(dev, &tuna, data);
2305
2306 out:
2307 kfree(data);
2308 return ret;
2309 }
2310
2311 static int ethtool_get_per_queue_coalesce(struct net_device *dev,
2312 void __user *useraddr,
2313 struct ethtool_per_queue_op *per_queue_opt)
2314 {
2315 u32 bit;
2316 int ret;
2317 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2318
2319 if (!dev->ethtool_ops->get_per_queue_coalesce)
2320 return -EOPNOTSUPP;
2321
2322 useraddr += sizeof(*per_queue_opt);
2323
2324 bitmap_from_u32array(queue_mask,
2325 MAX_NUM_QUEUE,
2326 per_queue_opt->queue_mask,
2327 DIV_ROUND_UP(MAX_NUM_QUEUE, 32));
2328
2329 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2330 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
2331
2332 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce);
2333 if (ret != 0)
2334 return ret;
2335 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
2336 return -EFAULT;
2337 useraddr += sizeof(coalesce);
2338 }
2339
2340 return 0;
2341 }
2342
2343 static int ethtool_set_per_queue_coalesce(struct net_device *dev,
2344 void __user *useraddr,
2345 struct ethtool_per_queue_op *per_queue_opt)
2346 {
2347 u32 bit;
2348 int i, ret = 0;
2349 int n_queue;
2350 struct ethtool_coalesce *backup = NULL, *tmp = NULL;
2351 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2352
2353 if ((!dev->ethtool_ops->set_per_queue_coalesce) ||
2354 (!dev->ethtool_ops->get_per_queue_coalesce))
2355 return -EOPNOTSUPP;
2356
2357 useraddr += sizeof(*per_queue_opt);
2358
2359 bitmap_from_u32array(queue_mask,
2360 MAX_NUM_QUEUE,
2361 per_queue_opt->queue_mask,
2362 DIV_ROUND_UP(MAX_NUM_QUEUE, 32));
2363 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE);
2364 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL);
2365 if (!backup)
2366 return -ENOMEM;
2367
2368 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2369 struct ethtool_coalesce coalesce;
2370
2371 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp);
2372 if (ret != 0)
2373 goto roll_back;
2374
2375 tmp++;
2376
2377 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) {
2378 ret = -EFAULT;
2379 goto roll_back;
2380 }
2381
2382 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce);
2383 if (ret != 0)
2384 goto roll_back;
2385
2386 useraddr += sizeof(coalesce);
2387 }
2388
2389 roll_back:
2390 if (ret != 0) {
2391 tmp = backup;
2392 for_each_set_bit(i, queue_mask, bit) {
2393 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp);
2394 tmp++;
2395 }
2396 }
2397 kfree(backup);
2398
2399 return ret;
2400 }
2401
2402 static int ethtool_set_per_queue(struct net_device *dev, void __user *useraddr)
2403 {
2404 struct ethtool_per_queue_op per_queue_opt;
2405
2406 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt)))
2407 return -EFAULT;
2408
2409 switch (per_queue_opt.sub_command) {
2410 case ETHTOOL_GCOALESCE:
2411 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt);
2412 case ETHTOOL_SCOALESCE:
2413 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt);
2414 default:
2415 return -EOPNOTSUPP;
2416 };
2417 }
2418
2419 /* The main entry point in this file. Called from net/core/dev_ioctl.c */
2420
2421 int dev_ethtool(struct net *net, struct ifreq *ifr)
2422 {
2423 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
2424 void __user *useraddr = ifr->ifr_data;
2425 u32 ethcmd, sub_cmd;
2426 int rc;
2427 netdev_features_t old_features;
2428
2429 if (!dev || !netif_device_present(dev))
2430 return -ENODEV;
2431
2432 if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
2433 return -EFAULT;
2434
2435 if (ethcmd == ETHTOOL_PERQUEUE) {
2436 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd)))
2437 return -EFAULT;
2438 } else {
2439 sub_cmd = ethcmd;
2440 }
2441 /* Allow some commands to be done by anyone */
2442 switch (sub_cmd) {
2443 case ETHTOOL_GSET:
2444 case ETHTOOL_GDRVINFO:
2445 case ETHTOOL_GMSGLVL:
2446 case ETHTOOL_GLINK:
2447 case ETHTOOL_GCOALESCE:
2448 case ETHTOOL_GRINGPARAM:
2449 case ETHTOOL_GPAUSEPARAM:
2450 case ETHTOOL_GRXCSUM:
2451 case ETHTOOL_GTXCSUM:
2452 case ETHTOOL_GSG:
2453 case ETHTOOL_GSSET_INFO:
2454 case ETHTOOL_GSTRINGS:
2455 case ETHTOOL_GSTATS:
2456 case ETHTOOL_GPHYSTATS:
2457 case ETHTOOL_GTSO:
2458 case ETHTOOL_GPERMADDR:
2459 case ETHTOOL_GUFO:
2460 case ETHTOOL_GGSO:
2461 case ETHTOOL_GGRO:
2462 case ETHTOOL_GFLAGS:
2463 case ETHTOOL_GPFLAGS:
2464 case ETHTOOL_GRXFH:
2465 case ETHTOOL_GRXRINGS:
2466 case ETHTOOL_GRXCLSRLCNT:
2467 case ETHTOOL_GRXCLSRULE:
2468 case ETHTOOL_GRXCLSRLALL:
2469 case ETHTOOL_GRXFHINDIR:
2470 case ETHTOOL_GRSSH:
2471 case ETHTOOL_GFEATURES:
2472 case ETHTOOL_GCHANNELS:
2473 case ETHTOOL_GET_TS_INFO:
2474 case ETHTOOL_GEEE:
2475 case ETHTOOL_GTUNABLE:
2476 break;
2477 default:
2478 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
2479 return -EPERM;
2480 }
2481
2482 if (dev->ethtool_ops->begin) {
2483 rc = dev->ethtool_ops->begin(dev);
2484 if (rc < 0)
2485 return rc;
2486 }
2487 old_features = dev->features;
2488
2489 switch (ethcmd) {
2490 case ETHTOOL_GSET:
2491 rc = ethtool_get_settings(dev, useraddr);
2492 break;
2493 case ETHTOOL_SSET:
2494 rc = ethtool_set_settings(dev, useraddr);
2495 break;
2496 case ETHTOOL_GDRVINFO:
2497 rc = ethtool_get_drvinfo(dev, useraddr);
2498 break;
2499 case ETHTOOL_GREGS:
2500 rc = ethtool_get_regs(dev, useraddr);
2501 break;
2502 case ETHTOOL_GWOL:
2503 rc = ethtool_get_wol(dev, useraddr);
2504 break;
2505 case ETHTOOL_SWOL:
2506 rc = ethtool_set_wol(dev, useraddr);
2507 break;
2508 case ETHTOOL_GMSGLVL:
2509 rc = ethtool_get_value(dev, useraddr, ethcmd,
2510 dev->ethtool_ops->get_msglevel);
2511 break;
2512 case ETHTOOL_SMSGLVL:
2513 rc = ethtool_set_value_void(dev, useraddr,
2514 dev->ethtool_ops->set_msglevel);
2515 break;
2516 case ETHTOOL_GEEE:
2517 rc = ethtool_get_eee(dev, useraddr);
2518 break;
2519 case ETHTOOL_SEEE:
2520 rc = ethtool_set_eee(dev, useraddr);
2521 break;
2522 case ETHTOOL_NWAY_RST:
2523 rc = ethtool_nway_reset(dev);
2524 break;
2525 case ETHTOOL_GLINK:
2526 rc = ethtool_get_link(dev, useraddr);
2527 break;
2528 case ETHTOOL_GEEPROM:
2529 rc = ethtool_get_eeprom(dev, useraddr);
2530 break;
2531 case ETHTOOL_SEEPROM:
2532 rc = ethtool_set_eeprom(dev, useraddr);
2533 break;
2534 case ETHTOOL_GCOALESCE:
2535 rc = ethtool_get_coalesce(dev, useraddr);
2536 break;
2537 case ETHTOOL_SCOALESCE:
2538 rc = ethtool_set_coalesce(dev, useraddr);
2539 break;
2540 case ETHTOOL_GRINGPARAM:
2541 rc = ethtool_get_ringparam(dev, useraddr);
2542 break;
2543 case ETHTOOL_SRINGPARAM:
2544 rc = ethtool_set_ringparam(dev, useraddr);
2545 break;
2546 case ETHTOOL_GPAUSEPARAM:
2547 rc = ethtool_get_pauseparam(dev, useraddr);
2548 break;
2549 case ETHTOOL_SPAUSEPARAM:
2550 rc = ethtool_set_pauseparam(dev, useraddr);
2551 break;
2552 case ETHTOOL_TEST:
2553 rc = ethtool_self_test(dev, useraddr);
2554 break;
2555 case ETHTOOL_GSTRINGS:
2556 rc = ethtool_get_strings(dev, useraddr);
2557 break;
2558 case ETHTOOL_PHYS_ID:
2559 rc = ethtool_phys_id(dev, useraddr);
2560 break;
2561 case ETHTOOL_GSTATS:
2562 rc = ethtool_get_stats(dev, useraddr);
2563 break;
2564 case ETHTOOL_GPERMADDR:
2565 rc = ethtool_get_perm_addr(dev, useraddr);
2566 break;
2567 case ETHTOOL_GFLAGS:
2568 rc = ethtool_get_value(dev, useraddr, ethcmd,
2569 __ethtool_get_flags);
2570 break;
2571 case ETHTOOL_SFLAGS:
2572 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
2573 break;
2574 case ETHTOOL_GPFLAGS:
2575 rc = ethtool_get_value(dev, useraddr, ethcmd,
2576 dev->ethtool_ops->get_priv_flags);
2577 break;
2578 case ETHTOOL_SPFLAGS:
2579 rc = ethtool_set_value(dev, useraddr,
2580 dev->ethtool_ops->set_priv_flags);
2581 break;
2582 case ETHTOOL_GRXFH:
2583 case ETHTOOL_GRXRINGS:
2584 case ETHTOOL_GRXCLSRLCNT:
2585 case ETHTOOL_GRXCLSRULE:
2586 case ETHTOOL_GRXCLSRLALL:
2587 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
2588 break;
2589 case ETHTOOL_SRXFH:
2590 case ETHTOOL_SRXCLSRLDEL:
2591 case ETHTOOL_SRXCLSRLINS:
2592 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
2593 break;
2594 case ETHTOOL_FLASHDEV:
2595 rc = ethtool_flash_device(dev, useraddr);
2596 break;
2597 case ETHTOOL_RESET:
2598 rc = ethtool_reset(dev, useraddr);
2599 break;
2600 case ETHTOOL_GSSET_INFO:
2601 rc = ethtool_get_sset_info(dev, useraddr);
2602 break;
2603 case ETHTOOL_GRXFHINDIR:
2604 rc = ethtool_get_rxfh_indir(dev, useraddr);
2605 break;
2606 case ETHTOOL_SRXFHINDIR:
2607 rc = ethtool_set_rxfh_indir(dev, useraddr);
2608 break;
2609 case ETHTOOL_GRSSH:
2610 rc = ethtool_get_rxfh(dev, useraddr);
2611 break;
2612 case ETHTOOL_SRSSH:
2613 rc = ethtool_set_rxfh(dev, useraddr);
2614 break;
2615 case ETHTOOL_GFEATURES:
2616 rc = ethtool_get_features(dev, useraddr);
2617 break;
2618 case ETHTOOL_SFEATURES:
2619 rc = ethtool_set_features(dev, useraddr);
2620 break;
2621 case ETHTOOL_GTXCSUM:
2622 case ETHTOOL_GRXCSUM:
2623 case ETHTOOL_GSG:
2624 case ETHTOOL_GTSO:
2625 case ETHTOOL_GUFO:
2626 case ETHTOOL_GGSO:
2627 case ETHTOOL_GGRO:
2628 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
2629 break;
2630 case ETHTOOL_STXCSUM:
2631 case ETHTOOL_SRXCSUM:
2632 case ETHTOOL_SSG:
2633 case ETHTOOL_STSO:
2634 case ETHTOOL_SUFO:
2635 case ETHTOOL_SGSO:
2636 case ETHTOOL_SGRO:
2637 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
2638 break;
2639 case ETHTOOL_GCHANNELS:
2640 rc = ethtool_get_channels(dev, useraddr);
2641 break;
2642 case ETHTOOL_SCHANNELS:
2643 rc = ethtool_set_channels(dev, useraddr);
2644 break;
2645 case ETHTOOL_SET_DUMP:
2646 rc = ethtool_set_dump(dev, useraddr);
2647 break;
2648 case ETHTOOL_GET_DUMP_FLAG:
2649 rc = ethtool_get_dump_flag(dev, useraddr);
2650 break;
2651 case ETHTOOL_GET_DUMP_DATA:
2652 rc = ethtool_get_dump_data(dev, useraddr);
2653 break;
2654 case ETHTOOL_GET_TS_INFO:
2655 rc = ethtool_get_ts_info(dev, useraddr);
2656 break;
2657 case ETHTOOL_GMODULEINFO:
2658 rc = ethtool_get_module_info(dev, useraddr);
2659 break;
2660 case ETHTOOL_GMODULEEEPROM:
2661 rc = ethtool_get_module_eeprom(dev, useraddr);
2662 break;
2663 case ETHTOOL_GTUNABLE:
2664 rc = ethtool_get_tunable(dev, useraddr);
2665 break;
2666 case ETHTOOL_STUNABLE:
2667 rc = ethtool_set_tunable(dev, useraddr);
2668 break;
2669 case ETHTOOL_GPHYSTATS:
2670 rc = ethtool_get_phy_stats(dev, useraddr);
2671 break;
2672 case ETHTOOL_PERQUEUE:
2673 rc = ethtool_set_per_queue(dev, useraddr);
2674 break;
2675 case ETHTOOL_GLINKSETTINGS:
2676 rc = ethtool_get_link_ksettings(dev, useraddr);
2677 break;
2678 case ETHTOOL_SLINKSETTINGS:
2679 rc = ethtool_set_link_ksettings(dev, useraddr);
2680 break;
2681 default:
2682 rc = -EOPNOTSUPP;
2683 }
2684
2685 if (dev->ethtool_ops->complete)
2686 dev->ethtool_ops->complete(dev);
2687
2688 if (old_features != dev->features)
2689 netdev_features_change(dev);
2690
2691 return rc;
2692 }
Linux kernel - Deliverables
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