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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * net/core/ethtool.c - Ethtool ioctl handler
4 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx>
5 *
6 * This file is where we call all the ethtool_ops commands to get
7 * the information ethtool needs.
8 */
9
10#include <linux/compat.h>
11#include <linux/module.h>
12#include <linux/types.h>
13#include <linux/capability.h>
14#include <linux/errno.h>
15#include <linux/ethtool.h>
16#include <linux/netdevice.h>
17#include <linux/net_tstamp.h>
18#include <linux/phy.h>
19#include <linux/bitops.h>
20#include <linux/uaccess.h>
21#include <linux/vmalloc.h>
22#include <linux/sfp.h>
23#include <linux/slab.h>
24#include <linux/rtnetlink.h>
25#include <linux/sched/signal.h>
26#include <linux/net.h>
27#include <net/devlink.h>
28#include <net/xdp_sock_drv.h>
29#include <net/flow_offload.h>
30#include <linux/ethtool_netlink.h>
31#include <generated/utsrelease.h>
32#include "common.h"
33
34/*
35 * Some useful ethtool_ops methods that're device independent.
36 * If we find that all drivers want to do the same thing here,
37 * we can turn these into dev_() function calls.
38 */
39
40u32 ethtool_op_get_link(struct net_device *dev)
41{
42 return netif_carrier_ok(dev) ? 1 : 0;
43}
44EXPORT_SYMBOL(ethtool_op_get_link);
45
46int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info)
47{
48 info->so_timestamping =
49 SOF_TIMESTAMPING_TX_SOFTWARE |
50 SOF_TIMESTAMPING_RX_SOFTWARE |
51 SOF_TIMESTAMPING_SOFTWARE;
52 info->phc_index = -1;
53 return 0;
54}
55EXPORT_SYMBOL(ethtool_op_get_ts_info);
56
57/* Handlers for each ethtool command */
58
59static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
60{
61 struct ethtool_gfeatures cmd = {
62 .cmd = ETHTOOL_GFEATURES,
63 .size = ETHTOOL_DEV_FEATURE_WORDS,
64 };
65 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
66 u32 __user *sizeaddr;
67 u32 copy_size;
68 int i;
69
70 /* in case feature bits run out again */
71 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t));
72
73 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
74 features[i].available = (u32)(dev->hw_features >> (32 * i));
75 features[i].requested = (u32)(dev->wanted_features >> (32 * i));
76 features[i].active = (u32)(dev->features >> (32 * i));
77 features[i].never_changed =
78 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i));
79 }
80
81 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
82 if (get_user(copy_size, sizeaddr))
83 return -EFAULT;
84
85 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
86 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
87
88 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
89 return -EFAULT;
90 useraddr += sizeof(cmd);
91 if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
92 return -EFAULT;
93
94 return 0;
95}
96
97static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
98{
99 struct ethtool_sfeatures cmd;
100 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
101 netdev_features_t wanted = 0, valid = 0;
102 int i, ret = 0;
103
104 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
105 return -EFAULT;
106 useraddr += sizeof(cmd);
107
108 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
109 return -EINVAL;
110
111 if (copy_from_user(features, useraddr, sizeof(features)))
112 return -EFAULT;
113
114 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
115 valid |= (netdev_features_t)features[i].valid << (32 * i);
116 wanted |= (netdev_features_t)features[i].requested << (32 * i);
117 }
118
119 if (valid & ~NETIF_F_ETHTOOL_BITS)
120 return -EINVAL;
121
122 if (valid & ~dev->hw_features) {
123 valid &= dev->hw_features;
124 ret |= ETHTOOL_F_UNSUPPORTED;
125 }
126
127 dev->wanted_features &= ~valid;
128 dev->wanted_features |= wanted & valid;
129 __netdev_update_features(dev);
130
131 if ((dev->wanted_features ^ dev->features) & valid)
132 ret |= ETHTOOL_F_WISH;
133
134 return ret;
135}
136
137static int __ethtool_get_sset_count(struct net_device *dev, int sset)
138{
139 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops;
140 const struct ethtool_ops *ops = dev->ethtool_ops;
141
142 if (sset == ETH_SS_FEATURES)
143 return ARRAY_SIZE(netdev_features_strings);
144
145 if (sset == ETH_SS_RSS_HASH_FUNCS)
146 return ARRAY_SIZE(rss_hash_func_strings);
147
148 if (sset == ETH_SS_TUNABLES)
149 return ARRAY_SIZE(tunable_strings);
150
151 if (sset == ETH_SS_PHY_TUNABLES)
152 return ARRAY_SIZE(phy_tunable_strings);
153
154 if (sset == ETH_SS_PHY_STATS && dev->phydev &&
155 !ops->get_ethtool_phy_stats &&
156 phy_ops && phy_ops->get_sset_count)
157 return phy_ops->get_sset_count(dev->phydev);
158
159 if (sset == ETH_SS_LINK_MODES)
160 return __ETHTOOL_LINK_MODE_MASK_NBITS;
161
162 if (ops->get_sset_count && ops->get_strings)
163 return ops->get_sset_count(dev, sset);
164 else
165 return -EOPNOTSUPP;
166}
167
168static void __ethtool_get_strings(struct net_device *dev,
169 u32 stringset, u8 *data)
170{
171 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops;
172 const struct ethtool_ops *ops = dev->ethtool_ops;
173
174 if (stringset == ETH_SS_FEATURES)
175 memcpy(data, netdev_features_strings,
176 sizeof(netdev_features_strings));
177 else if (stringset == ETH_SS_RSS_HASH_FUNCS)
178 memcpy(data, rss_hash_func_strings,
179 sizeof(rss_hash_func_strings));
180 else if (stringset == ETH_SS_TUNABLES)
181 memcpy(data, tunable_strings, sizeof(tunable_strings));
182 else if (stringset == ETH_SS_PHY_TUNABLES)
183 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings));
184 else if (stringset == ETH_SS_PHY_STATS && dev->phydev &&
185 !ops->get_ethtool_phy_stats && phy_ops &&
186 phy_ops->get_strings)
187 phy_ops->get_strings(dev->phydev, data);
188 else if (stringset == ETH_SS_LINK_MODES)
189 memcpy(data, link_mode_names,
190 __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN);
191 else
192 /* ops->get_strings is valid because checked earlier */
193 ops->get_strings(dev, stringset, data);
194}
195
196static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd)
197{
198 /* feature masks of legacy discrete ethtool ops */
199
200 switch (eth_cmd) {
201 case ETHTOOL_GTXCSUM:
202 case ETHTOOL_STXCSUM:
203 return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC |
204 NETIF_F_SCTP_CRC;
205 case ETHTOOL_GRXCSUM:
206 case ETHTOOL_SRXCSUM:
207 return NETIF_F_RXCSUM;
208 case ETHTOOL_GSG:
209 case ETHTOOL_SSG:
210 return NETIF_F_SG | NETIF_F_FRAGLIST;
211 case ETHTOOL_GTSO:
212 case ETHTOOL_STSO:
213 return NETIF_F_ALL_TSO;
214 case ETHTOOL_GGSO:
215 case ETHTOOL_SGSO:
216 return NETIF_F_GSO;
217 case ETHTOOL_GGRO:
218 case ETHTOOL_SGRO:
219 return NETIF_F_GRO;
220 default:
221 BUG();
222 }
223}
224
225static int ethtool_get_one_feature(struct net_device *dev,
226 char __user *useraddr, u32 ethcmd)
227{
228 netdev_features_t mask = ethtool_get_feature_mask(ethcmd);
229 struct ethtool_value edata = {
230 .cmd = ethcmd,
231 .data = !!(dev->features & mask),
232 };
233
234 if (copy_to_user(useraddr, &edata, sizeof(edata)))
235 return -EFAULT;
236 return 0;
237}
238
239static int ethtool_set_one_feature(struct net_device *dev,
240 void __user *useraddr, u32 ethcmd)
241{
242 struct ethtool_value edata;
243 netdev_features_t mask;
244
245 if (copy_from_user(&edata, useraddr, sizeof(edata)))
246 return -EFAULT;
247
248 mask = ethtool_get_feature_mask(ethcmd);
249 mask &= dev->hw_features;
250 if (!mask)
251 return -EOPNOTSUPP;
252
253 if (edata.data)
254 dev->wanted_features |= mask;
255 else
256 dev->wanted_features &= ~mask;
257
258 __netdev_update_features(dev);
259
260 return 0;
261}
262
263#define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
264 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
265#define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
266 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
267 NETIF_F_RXHASH)
268
269static u32 __ethtool_get_flags(struct net_device *dev)
270{
271 u32 flags = 0;
272
273 if (dev->features & NETIF_F_LRO)
274 flags |= ETH_FLAG_LRO;
275 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
276 flags |= ETH_FLAG_RXVLAN;
277 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX)
278 flags |= ETH_FLAG_TXVLAN;
279 if (dev->features & NETIF_F_NTUPLE)
280 flags |= ETH_FLAG_NTUPLE;
281 if (dev->features & NETIF_F_RXHASH)
282 flags |= ETH_FLAG_RXHASH;
283
284 return flags;
285}
286
287static int __ethtool_set_flags(struct net_device *dev, u32 data)
288{
289 netdev_features_t features = 0, changed;
290
291 if (data & ~ETH_ALL_FLAGS)
292 return -EINVAL;
293
294 if (data & ETH_FLAG_LRO)
295 features |= NETIF_F_LRO;
296 if (data & ETH_FLAG_RXVLAN)
297 features |= NETIF_F_HW_VLAN_CTAG_RX;
298 if (data & ETH_FLAG_TXVLAN)
299 features |= NETIF_F_HW_VLAN_CTAG_TX;
300 if (data & ETH_FLAG_NTUPLE)
301 features |= NETIF_F_NTUPLE;
302 if (data & ETH_FLAG_RXHASH)
303 features |= NETIF_F_RXHASH;
304
305 /* allow changing only bits set in hw_features */
306 changed = (features ^ dev->features) & ETH_ALL_FEATURES;
307 if (changed & ~dev->hw_features)
308 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
309
310 dev->wanted_features =
311 (dev->wanted_features & ~changed) | (features & changed);
312
313 __netdev_update_features(dev);
314
315 return 0;
316}
317
318/* Given two link masks, AND them together and save the result in dst. */
319void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst,
320 struct ethtool_link_ksettings *src)
321{
322 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS);
323 unsigned int idx = 0;
324
325 for (; idx < size; idx++) {
326 dst->link_modes.supported[idx] &=
327 src->link_modes.supported[idx];
328 dst->link_modes.advertising[idx] &=
329 src->link_modes.advertising[idx];
330 }
331}
332EXPORT_SYMBOL(ethtool_intersect_link_masks);
333
334void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
335 u32 legacy_u32)
336{
337 bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS);
338 dst[0] = legacy_u32;
339}
340EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode);
341
342/* return false if src had higher bits set. lower bits always updated. */
343bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
344 const unsigned long *src)
345{
346 bool retval = true;
347
348 /* TODO: following test will soon always be true */
349 if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) {
350 __ETHTOOL_DECLARE_LINK_MODE_MASK(ext);
351
352 bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
353 bitmap_fill(ext, 32);
354 bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
355 if (bitmap_intersects(ext, src,
356 __ETHTOOL_LINK_MODE_MASK_NBITS)) {
357 /* src mask goes beyond bit 31 */
358 retval = false;
359 }
360 }
361 *legacy_u32 = src[0];
362 return retval;
363}
364EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32);
365
366/* return false if ksettings link modes had higher bits
367 * set. legacy_settings always updated (best effort)
368 */
369static bool
370convert_link_ksettings_to_legacy_settings(
371 struct ethtool_cmd *legacy_settings,
372 const struct ethtool_link_ksettings *link_ksettings)
373{
374 bool retval = true;
375
376 memset(legacy_settings, 0, sizeof(*legacy_settings));
377 /* this also clears the deprecated fields in legacy structure:
378 * __u8 transceiver;
379 * __u32 maxtxpkt;
380 * __u32 maxrxpkt;
381 */
382
383 retval &= ethtool_convert_link_mode_to_legacy_u32(
384 &legacy_settings->supported,
385 link_ksettings->link_modes.supported);
386 retval &= ethtool_convert_link_mode_to_legacy_u32(
387 &legacy_settings->advertising,
388 link_ksettings->link_modes.advertising);
389 retval &= ethtool_convert_link_mode_to_legacy_u32(
390 &legacy_settings->lp_advertising,
391 link_ksettings->link_modes.lp_advertising);
392 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed);
393 legacy_settings->duplex
394 = link_ksettings->base.duplex;
395 legacy_settings->port
396 = link_ksettings->base.port;
397 legacy_settings->phy_address
398 = link_ksettings->base.phy_address;
399 legacy_settings->autoneg
400 = link_ksettings->base.autoneg;
401 legacy_settings->mdio_support
402 = link_ksettings->base.mdio_support;
403 legacy_settings->eth_tp_mdix
404 = link_ksettings->base.eth_tp_mdix;
405 legacy_settings->eth_tp_mdix_ctrl
406 = link_ksettings->base.eth_tp_mdix_ctrl;
407 legacy_settings->transceiver
408 = link_ksettings->base.transceiver;
409 return retval;
410}
411
412/* number of 32-bit words to store the user's link mode bitmaps */
413#define __ETHTOOL_LINK_MODE_MASK_NU32 \
414 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
415
416/* layout of the struct passed from/to userland */
417struct ethtool_link_usettings {
418 struct ethtool_link_settings base;
419 struct {
420 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32];
421 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
422 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
423 } link_modes;
424};
425
426/* Internal kernel helper to query a device ethtool_link_settings. */
427int __ethtool_get_link_ksettings(struct net_device *dev,
428 struct ethtool_link_ksettings *link_ksettings)
429{
430 ASSERT_RTNL();
431
432 if (!dev->ethtool_ops->get_link_ksettings)
433 return -EOPNOTSUPP;
434
435 memset(link_ksettings, 0, sizeof(*link_ksettings));
436 return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings);
437}
438EXPORT_SYMBOL(__ethtool_get_link_ksettings);
439
440/* convert ethtool_link_usettings in user space to a kernel internal
441 * ethtool_link_ksettings. return 0 on success, errno on error.
442 */
443static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to,
444 const void __user *from)
445{
446 struct ethtool_link_usettings link_usettings;
447
448 if (copy_from_user(&link_usettings, from, sizeof(link_usettings)))
449 return -EFAULT;
450
451 memcpy(&to->base, &link_usettings.base, sizeof(to->base));
452 bitmap_from_arr32(to->link_modes.supported,
453 link_usettings.link_modes.supported,
454 __ETHTOOL_LINK_MODE_MASK_NBITS);
455 bitmap_from_arr32(to->link_modes.advertising,
456 link_usettings.link_modes.advertising,
457 __ETHTOOL_LINK_MODE_MASK_NBITS);
458 bitmap_from_arr32(to->link_modes.lp_advertising,
459 link_usettings.link_modes.lp_advertising,
460 __ETHTOOL_LINK_MODE_MASK_NBITS);
461
462 return 0;
463}
464
465/* Check if the user is trying to change anything besides speed/duplex */
466bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd)
467{
468 struct ethtool_link_settings base2 = {};
469
470 base2.speed = cmd->base.speed;
471 base2.port = PORT_OTHER;
472 base2.duplex = cmd->base.duplex;
473 base2.cmd = cmd->base.cmd;
474 base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords;
475
476 return !memcmp(&base2, &cmd->base, sizeof(base2)) &&
477 bitmap_empty(cmd->link_modes.supported,
478 __ETHTOOL_LINK_MODE_MASK_NBITS) &&
479 bitmap_empty(cmd->link_modes.lp_advertising,
480 __ETHTOOL_LINK_MODE_MASK_NBITS);
481}
482
483/* convert a kernel internal ethtool_link_ksettings to
484 * ethtool_link_usettings in user space. return 0 on success, errno on
485 * error.
486 */
487static int
488store_link_ksettings_for_user(void __user *to,
489 const struct ethtool_link_ksettings *from)
490{
491 struct ethtool_link_usettings link_usettings;
492
493 memcpy(&link_usettings, from, sizeof(link_usettings));
494 bitmap_to_arr32(link_usettings.link_modes.supported,
495 from->link_modes.supported,
496 __ETHTOOL_LINK_MODE_MASK_NBITS);
497 bitmap_to_arr32(link_usettings.link_modes.advertising,
498 from->link_modes.advertising,
499 __ETHTOOL_LINK_MODE_MASK_NBITS);
500 bitmap_to_arr32(link_usettings.link_modes.lp_advertising,
501 from->link_modes.lp_advertising,
502 __ETHTOOL_LINK_MODE_MASK_NBITS);
503
504 if (copy_to_user(to, &link_usettings, sizeof(link_usettings)))
505 return -EFAULT;
506
507 return 0;
508}
509
510/* Query device for its ethtool_link_settings. */
511static int ethtool_get_link_ksettings(struct net_device *dev,
512 void __user *useraddr)
513{
514 int err = 0;
515 struct ethtool_link_ksettings link_ksettings;
516
517 ASSERT_RTNL();
518 if (!dev->ethtool_ops->get_link_ksettings)
519 return -EOPNOTSUPP;
520
521 /* handle bitmap nbits handshake */
522 if (copy_from_user(&link_ksettings.base, useraddr,
523 sizeof(link_ksettings.base)))
524 return -EFAULT;
525
526 if (__ETHTOOL_LINK_MODE_MASK_NU32
527 != link_ksettings.base.link_mode_masks_nwords) {
528 /* wrong link mode nbits requested */
529 memset(&link_ksettings, 0, sizeof(link_ksettings));
530 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
531 /* send back number of words required as negative val */
532 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX,
533 "need too many bits for link modes!");
534 link_ksettings.base.link_mode_masks_nwords
535 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32);
536
537 /* copy the base fields back to user, not the link
538 * mode bitmaps
539 */
540 if (copy_to_user(useraddr, &link_ksettings.base,
541 sizeof(link_ksettings.base)))
542 return -EFAULT;
543
544 return 0;
545 }
546
547 /* handshake successful: user/kernel agree on
548 * link_mode_masks_nwords
549 */
550
551 memset(&link_ksettings, 0, sizeof(link_ksettings));
552 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
553 if (err < 0)
554 return err;
555
556 /* make sure we tell the right values to user */
557 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
558 link_ksettings.base.link_mode_masks_nwords
559 = __ETHTOOL_LINK_MODE_MASK_NU32;
560 link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED;
561 link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED;
562
563 return store_link_ksettings_for_user(useraddr, &link_ksettings);
564}
565
566/* Update device ethtool_link_settings. */
567static int ethtool_set_link_ksettings(struct net_device *dev,
568 void __user *useraddr)
569{
570 int err;
571 struct ethtool_link_ksettings link_ksettings;
572
573 ASSERT_RTNL();
574
575 if (!dev->ethtool_ops->set_link_ksettings)
576 return -EOPNOTSUPP;
577
578 /* make sure nbits field has expected value */
579 if (copy_from_user(&link_ksettings.base, useraddr,
580 sizeof(link_ksettings.base)))
581 return -EFAULT;
582
583 if (__ETHTOOL_LINK_MODE_MASK_NU32
584 != link_ksettings.base.link_mode_masks_nwords)
585 return -EINVAL;
586
587 /* copy the whole structure, now that we know it has expected
588 * format
589 */
590 err = load_link_ksettings_from_user(&link_ksettings, useraddr);
591 if (err)
592 return err;
593
594 /* re-check nwords field, just in case */
595 if (__ETHTOOL_LINK_MODE_MASK_NU32
596 != link_ksettings.base.link_mode_masks_nwords)
597 return -EINVAL;
598
599 if (link_ksettings.base.master_slave_cfg ||
600 link_ksettings.base.master_slave_state)
601 return -EINVAL;
602
603 err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
604 if (err >= 0) {
605 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL);
606 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL);
607 }
608 return err;
609}
610
611int ethtool_virtdev_set_link_ksettings(struct net_device *dev,
612 const struct ethtool_link_ksettings *cmd,
613 u32 *dev_speed, u8 *dev_duplex)
614{
615 u32 speed;
616 u8 duplex;
617
618 speed = cmd->base.speed;
619 duplex = cmd->base.duplex;
620 /* don't allow custom speed and duplex */
621 if (!ethtool_validate_speed(speed) ||
622 !ethtool_validate_duplex(duplex) ||
623 !ethtool_virtdev_validate_cmd(cmd))
624 return -EINVAL;
625 *dev_speed = speed;
626 *dev_duplex = duplex;
627
628 return 0;
629}
630EXPORT_SYMBOL(ethtool_virtdev_set_link_ksettings);
631
632/* Query device for its ethtool_cmd settings.
633 *
634 * Backward compatibility note: for compatibility with legacy ethtool, this is
635 * now implemented via get_link_ksettings. When driver reports higher link mode
636 * bits, a kernel warning is logged once (with name of 1st driver/device) to
637 * recommend user to upgrade ethtool, but the command is successful (only the
638 * lower link mode bits reported back to user). Deprecated fields from
639 * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero.
640 */
641static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
642{
643 struct ethtool_link_ksettings link_ksettings;
644 struct ethtool_cmd cmd;
645 int err;
646
647 ASSERT_RTNL();
648 if (!dev->ethtool_ops->get_link_ksettings)
649 return -EOPNOTSUPP;
650
651 memset(&link_ksettings, 0, sizeof(link_ksettings));
652 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
653 if (err < 0)
654 return err;
655 convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings);
656
657 /* send a sensible cmd tag back to user */
658 cmd.cmd = ETHTOOL_GSET;
659
660 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
661 return -EFAULT;
662
663 return 0;
664}
665
666/* Update device link settings with given ethtool_cmd.
667 *
668 * Backward compatibility note: for compatibility with legacy ethtool, this is
669 * now always implemented via set_link_settings. When user's request updates
670 * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
671 * warning is logged once (with name of 1st driver/device) to recommend user to
672 * upgrade ethtool, and the request is rejected.
673 */
674static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
675{
676 struct ethtool_link_ksettings link_ksettings;
677 struct ethtool_cmd cmd;
678 int ret;
679
680 ASSERT_RTNL();
681
682 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
683 return -EFAULT;
684 if (!dev->ethtool_ops->set_link_ksettings)
685 return -EOPNOTSUPP;
686
687 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd))
688 return -EINVAL;
689 link_ksettings.base.link_mode_masks_nwords =
690 __ETHTOOL_LINK_MODE_MASK_NU32;
691 ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
692 if (ret >= 0) {
693 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL);
694 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL);
695 }
696 return ret;
697}
698
699static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
700 void __user *useraddr)
701{
702 struct ethtool_drvinfo info;
703 const struct ethtool_ops *ops = dev->ethtool_ops;
704
705 memset(&info, 0, sizeof(info));
706 info.cmd = ETHTOOL_GDRVINFO;
707 strlcpy(info.version, UTS_RELEASE, sizeof(info.version));
708 if (ops->get_drvinfo) {
709 ops->get_drvinfo(dev, &info);
710 } else if (dev->dev.parent && dev->dev.parent->driver) {
711 strlcpy(info.bus_info, dev_name(dev->dev.parent),
712 sizeof(info.bus_info));
713 strlcpy(info.driver, dev->dev.parent->driver->name,
714 sizeof(info.driver));
715 } else {
716 return -EOPNOTSUPP;
717 }
718
719 /*
720 * this method of obtaining string set info is deprecated;
721 * Use ETHTOOL_GSSET_INFO instead.
722 */
723 if (ops->get_sset_count) {
724 int rc;
725
726 rc = ops->get_sset_count(dev, ETH_SS_TEST);
727 if (rc >= 0)
728 info.testinfo_len = rc;
729 rc = ops->get_sset_count(dev, ETH_SS_STATS);
730 if (rc >= 0)
731 info.n_stats = rc;
732 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
733 if (rc >= 0)
734 info.n_priv_flags = rc;
735 }
736 if (ops->get_regs_len) {
737 int ret = ops->get_regs_len(dev);
738
739 if (ret > 0)
740 info.regdump_len = ret;
741 }
742
743 if (ops->get_eeprom_len)
744 info.eedump_len = ops->get_eeprom_len(dev);
745
746 if (!info.fw_version[0])
747 devlink_compat_running_version(dev, info.fw_version,
748 sizeof(info.fw_version));
749
750 if (copy_to_user(useraddr, &info, sizeof(info)))
751 return -EFAULT;
752 return 0;
753}
754
755static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
756 void __user *useraddr)
757{
758 struct ethtool_sset_info info;
759 u64 sset_mask;
760 int i, idx = 0, n_bits = 0, ret, rc;
761 u32 *info_buf = NULL;
762
763 if (copy_from_user(&info, useraddr, sizeof(info)))
764 return -EFAULT;
765
766 /* store copy of mask, because we zero struct later on */
767 sset_mask = info.sset_mask;
768 if (!sset_mask)
769 return 0;
770
771 /* calculate size of return buffer */
772 n_bits = hweight64(sset_mask);
773
774 memset(&info, 0, sizeof(info));
775 info.cmd = ETHTOOL_GSSET_INFO;
776
777 info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER);
778 if (!info_buf)
779 return -ENOMEM;
780
781 /*
782 * fill return buffer based on input bitmask and successful
783 * get_sset_count return
784 */
785 for (i = 0; i < 64; i++) {
786 if (!(sset_mask & (1ULL << i)))
787 continue;
788
789 rc = __ethtool_get_sset_count(dev, i);
790 if (rc >= 0) {
791 info.sset_mask |= (1ULL << i);
792 info_buf[idx++] = rc;
793 }
794 }
795
796 ret = -EFAULT;
797 if (copy_to_user(useraddr, &info, sizeof(info)))
798 goto out;
799
800 useraddr += offsetof(struct ethtool_sset_info, data);
801 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
802 goto out;
803
804 ret = 0;
805
806out:
807 kfree(info_buf);
808 return ret;
809}
810
811static noinline_for_stack int
812ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc,
813 const struct compat_ethtool_rxnfc __user *useraddr,
814 size_t size)
815{
816 struct compat_ethtool_rxnfc crxnfc = {};
817
818 /* We expect there to be holes between fs.m_ext and
819 * fs.ring_cookie and at the end of fs, but nowhere else.
820 * On non-x86, no conversion should be needed.
821 */
822 BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) &&
823 sizeof(struct compat_ethtool_rxnfc) !=
824 sizeof(struct ethtool_rxnfc));
825 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) +
826 sizeof(useraddr->fs.m_ext) !=
827 offsetof(struct ethtool_rxnfc, fs.m_ext) +
828 sizeof(rxnfc->fs.m_ext));
829 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) -
830 offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) !=
831 offsetof(struct ethtool_rxnfc, fs.location) -
832 offsetof(struct ethtool_rxnfc, fs.ring_cookie));
833
834 if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc))))
835 return -EFAULT;
836
837 *rxnfc = (struct ethtool_rxnfc) {
838 .cmd = crxnfc.cmd,
839 .flow_type = crxnfc.flow_type,
840 .data = crxnfc.data,
841 .fs = {
842 .flow_type = crxnfc.fs.flow_type,
843 .h_u = crxnfc.fs.h_u,
844 .h_ext = crxnfc.fs.h_ext,
845 .m_u = crxnfc.fs.m_u,
846 .m_ext = crxnfc.fs.m_ext,
847 .ring_cookie = crxnfc.fs.ring_cookie,
848 .location = crxnfc.fs.location,
849 },
850 .rule_cnt = crxnfc.rule_cnt,
851 };
852
853 return 0;
854}
855
856static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc,
857 const void __user *useraddr,
858 size_t size)
859{
860 if (compat_need_64bit_alignment_fixup())
861 return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size);
862
863 if (copy_from_user(rxnfc, useraddr, size))
864 return -EFAULT;
865
866 return 0;
867}
868
869static int ethtool_rxnfc_copy_to_compat(void __user *useraddr,
870 const struct ethtool_rxnfc *rxnfc,
871 size_t size, const u32 *rule_buf)
872{
873 struct compat_ethtool_rxnfc crxnfc;
874
875 memset(&crxnfc, 0, sizeof(crxnfc));
876 crxnfc = (struct compat_ethtool_rxnfc) {
877 .cmd = rxnfc->cmd,
878 .flow_type = rxnfc->flow_type,
879 .data = rxnfc->data,
880 .fs = {
881 .flow_type = rxnfc->fs.flow_type,
882 .h_u = rxnfc->fs.h_u,
883 .h_ext = rxnfc->fs.h_ext,
884 .m_u = rxnfc->fs.m_u,
885 .m_ext = rxnfc->fs.m_ext,
886 .ring_cookie = rxnfc->fs.ring_cookie,
887 .location = rxnfc->fs.location,
888 },
889 .rule_cnt = rxnfc->rule_cnt,
890 };
891
892 if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc))))
893 return -EFAULT;
894
895 return 0;
896}
897
898static int ethtool_rxnfc_copy_to_user(void __user *useraddr,
899 const struct ethtool_rxnfc *rxnfc,
900 size_t size, const u32 *rule_buf)
901{
902 int ret;
903
904 if (compat_need_64bit_alignment_fixup()) {
905 ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size,
906 rule_buf);
907 useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs);
908 } else {
909 ret = copy_to_user(useraddr, rxnfc, size);
910 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
911 }
912
913 if (ret)
914 return -EFAULT;
915
916 if (rule_buf) {
917 if (copy_to_user(useraddr, rule_buf,
918 rxnfc->rule_cnt * sizeof(u32)))
919 return -EFAULT;
920 }
921
922 return 0;
923}
924
925static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
926 u32 cmd, void __user *useraddr)
927{
928 struct ethtool_rxnfc info;
929 size_t info_size = sizeof(info);
930 int rc;
931
932 if (!dev->ethtool_ops->set_rxnfc)
933 return -EOPNOTSUPP;
934
935 /* struct ethtool_rxnfc was originally defined for
936 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
937 * members. User-space might still be using that
938 * definition. */
939 if (cmd == ETHTOOL_SRXFH)
940 info_size = (offsetof(struct ethtool_rxnfc, data) +
941 sizeof(info.data));
942
943 if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size))
944 return -EFAULT;
945
946 rc = dev->ethtool_ops->set_rxnfc(dev, &info);
947 if (rc)
948 return rc;
949
950 if (cmd == ETHTOOL_SRXCLSRLINS &&
951 ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL))
952 return -EFAULT;
953
954 return 0;
955}
956
957static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
958 u32 cmd, void __user *useraddr)
959{
960 struct ethtool_rxnfc info;
961 size_t info_size = sizeof(info);
962 const struct ethtool_ops *ops = dev->ethtool_ops;
963 int ret;
964 void *rule_buf = NULL;
965
966 if (!ops->get_rxnfc)
967 return -EOPNOTSUPP;
968
969 /* struct ethtool_rxnfc was originally defined for
970 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
971 * members. User-space might still be using that
972 * definition. */
973 if (cmd == ETHTOOL_GRXFH)
974 info_size = (offsetof(struct ethtool_rxnfc, data) +
975 sizeof(info.data));
976
977 if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size))
978 return -EFAULT;
979
980 /* If FLOW_RSS was requested then user-space must be using the
981 * new definition, as FLOW_RSS is newer.
982 */
983 if (cmd == ETHTOOL_GRXFH && info.flow_type & FLOW_RSS) {
984 info_size = sizeof(info);
985 if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size))
986 return -EFAULT;
987 /* Since malicious users may modify the original data,
988 * we need to check whether FLOW_RSS is still requested.
989 */
990 if (!(info.flow_type & FLOW_RSS))
991 return -EINVAL;
992 }
993
994 if (info.cmd != cmd)
995 return -EINVAL;
996
997 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
998 if (info.rule_cnt > 0) {
999 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
1000 rule_buf = kcalloc(info.rule_cnt, sizeof(u32),
1001 GFP_USER);
1002 if (!rule_buf)
1003 return -ENOMEM;
1004 }
1005 }
1006
1007 ret = ops->get_rxnfc(dev, &info, rule_buf);
1008 if (ret < 0)
1009 goto err_out;
1010
1011 ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf);
1012err_out:
1013 kfree(rule_buf);
1014
1015 return ret;
1016}
1017
1018static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr,
1019 struct ethtool_rxnfc *rx_rings,
1020 u32 size)
1021{
1022 int i;
1023
1024 if (copy_from_user(indir, useraddr, size * sizeof(indir[0])))
1025 return -EFAULT;
1026
1027 /* Validate ring indices */
1028 for (i = 0; i < size; i++)
1029 if (indir[i] >= rx_rings->data)
1030 return -EINVAL;
1031
1032 return 0;
1033}
1034
1035u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly;
1036
1037void netdev_rss_key_fill(void *buffer, size_t len)
1038{
1039 BUG_ON(len > sizeof(netdev_rss_key));
1040 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key));
1041 memcpy(buffer, netdev_rss_key, len);
1042}
1043EXPORT_SYMBOL(netdev_rss_key_fill);
1044
1045static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
1046 void __user *useraddr)
1047{
1048 u32 user_size, dev_size;
1049 u32 *indir;
1050 int ret;
1051
1052 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1053 !dev->ethtool_ops->get_rxfh)
1054 return -EOPNOTSUPP;
1055 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1056 if (dev_size == 0)
1057 return -EOPNOTSUPP;
1058
1059 if (copy_from_user(&user_size,
1060 useraddr + offsetof(struct ethtool_rxfh_indir, size),
1061 sizeof(user_size)))
1062 return -EFAULT;
1063
1064 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
1065 &dev_size, sizeof(dev_size)))
1066 return -EFAULT;
1067
1068 /* If the user buffer size is 0, this is just a query for the
1069 * device table size. Otherwise, if it's smaller than the
1070 * device table size it's an error.
1071 */
1072 if (user_size < dev_size)
1073 return user_size == 0 ? 0 : -EINVAL;
1074
1075 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1076 if (!indir)
1077 return -ENOMEM;
1078
1079 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1080 if (ret)
1081 goto out;
1082
1083 if (copy_to_user(useraddr +
1084 offsetof(struct ethtool_rxfh_indir, ring_index[0]),
1085 indir, dev_size * sizeof(indir[0])))
1086 ret = -EFAULT;
1087
1088out:
1089 kfree(indir);
1090 return ret;
1091}
1092
1093static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
1094 void __user *useraddr)
1095{
1096 struct ethtool_rxnfc rx_rings;
1097 u32 user_size, dev_size, i;
1098 u32 *indir;
1099 const struct ethtool_ops *ops = dev->ethtool_ops;
1100 int ret;
1101 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]);
1102
1103 if (!ops->get_rxfh_indir_size || !ops->set_rxfh ||
1104 !ops->get_rxnfc)
1105 return -EOPNOTSUPP;
1106
1107 dev_size = 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 (user_size != 0 && user_size != dev_size)
1117 return -EINVAL;
1118
1119 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1120 if (!indir)
1121 return -ENOMEM;
1122
1123 rx_rings.cmd = ETHTOOL_GRXRINGS;
1124 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1125 if (ret)
1126 goto out;
1127
1128 if (user_size == 0) {
1129 for (i = 0; i < dev_size; i++)
1130 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1131 } else {
1132 ret = ethtool_copy_validate_indir(indir,
1133 useraddr + ringidx_offset,
1134 &rx_rings,
1135 dev_size);
1136 if (ret)
1137 goto out;
1138 }
1139
1140 ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE);
1141 if (ret)
1142 goto out;
1143
1144 /* indicate whether rxfh was set to default */
1145 if (user_size == 0)
1146 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1147 else
1148 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1149
1150out:
1151 kfree(indir);
1152 return ret;
1153}
1154
1155static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
1156 void __user *useraddr)
1157{
1158 int ret;
1159 const struct ethtool_ops *ops = dev->ethtool_ops;
1160 u32 user_indir_size, user_key_size;
1161 u32 dev_indir_size = 0, dev_key_size = 0;
1162 struct ethtool_rxfh rxfh;
1163 u32 total_size;
1164 u32 indir_bytes;
1165 u32 *indir = NULL;
1166 u8 dev_hfunc = 0;
1167 u8 *hkey = NULL;
1168 u8 *rss_config;
1169
1170 if (!ops->get_rxfh)
1171 return -EOPNOTSUPP;
1172
1173 if (ops->get_rxfh_indir_size)
1174 dev_indir_size = ops->get_rxfh_indir_size(dev);
1175 if (ops->get_rxfh_key_size)
1176 dev_key_size = ops->get_rxfh_key_size(dev);
1177
1178 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
1179 return -EFAULT;
1180 user_indir_size = rxfh.indir_size;
1181 user_key_size = rxfh.key_size;
1182
1183 /* Check that reserved fields are 0 for now */
1184 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32)
1185 return -EINVAL;
1186 /* Most drivers don't handle rss_context, check it's 0 as well */
1187 if (rxfh.rss_context && !ops->get_rxfh_context)
1188 return -EOPNOTSUPP;
1189
1190 rxfh.indir_size = dev_indir_size;
1191 rxfh.key_size = dev_key_size;
1192 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh)))
1193 return -EFAULT;
1194
1195 if ((user_indir_size && (user_indir_size != dev_indir_size)) ||
1196 (user_key_size && (user_key_size != dev_key_size)))
1197 return -EINVAL;
1198
1199 indir_bytes = user_indir_size * sizeof(indir[0]);
1200 total_size = indir_bytes + user_key_size;
1201 rss_config = kzalloc(total_size, GFP_USER);
1202 if (!rss_config)
1203 return -ENOMEM;
1204
1205 if (user_indir_size)
1206 indir = (u32 *)rss_config;
1207
1208 if (user_key_size)
1209 hkey = rss_config + indir_bytes;
1210
1211 if (rxfh.rss_context)
1212 ret = dev->ethtool_ops->get_rxfh_context(dev, indir, hkey,
1213 &dev_hfunc,
1214 rxfh.rss_context);
1215 else
1216 ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc);
1217 if (ret)
1218 goto out;
1219
1220 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc),
1221 &dev_hfunc, sizeof(rxfh.hfunc))) {
1222 ret = -EFAULT;
1223 } else if (copy_to_user(useraddr +
1224 offsetof(struct ethtool_rxfh, rss_config[0]),
1225 rss_config, total_size)) {
1226 ret = -EFAULT;
1227 }
1228out:
1229 kfree(rss_config);
1230
1231 return ret;
1232}
1233
1234static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
1235 void __user *useraddr)
1236{
1237 int ret;
1238 const struct ethtool_ops *ops = dev->ethtool_ops;
1239 struct ethtool_rxnfc rx_rings;
1240 struct ethtool_rxfh rxfh;
1241 u32 dev_indir_size = 0, dev_key_size = 0, i;
1242 u32 *indir = NULL, indir_bytes = 0;
1243 u8 *hkey = NULL;
1244 u8 *rss_config;
1245 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]);
1246 bool delete = false;
1247
1248 if (!ops->get_rxnfc || !ops->set_rxfh)
1249 return -EOPNOTSUPP;
1250
1251 if (ops->get_rxfh_indir_size)
1252 dev_indir_size = ops->get_rxfh_indir_size(dev);
1253 if (ops->get_rxfh_key_size)
1254 dev_key_size = ops->get_rxfh_key_size(dev);
1255
1256 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
1257 return -EFAULT;
1258
1259 /* Check that reserved fields are 0 for now */
1260 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32)
1261 return -EINVAL;
1262 /* Most drivers don't handle rss_context, check it's 0 as well */
1263 if (rxfh.rss_context && !ops->set_rxfh_context)
1264 return -EOPNOTSUPP;
1265
1266 /* If either indir, hash key or function is valid, proceed further.
1267 * Must request at least one change: indir size, hash key or function.
1268 */
1269 if ((rxfh.indir_size &&
1270 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE &&
1271 rxfh.indir_size != dev_indir_size) ||
1272 (rxfh.key_size && (rxfh.key_size != dev_key_size)) ||
1273 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE &&
1274 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE))
1275 return -EINVAL;
1276
1277 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1278 indir_bytes = dev_indir_size * sizeof(indir[0]);
1279
1280 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER);
1281 if (!rss_config)
1282 return -ENOMEM;
1283
1284 rx_rings.cmd = ETHTOOL_GRXRINGS;
1285 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1286 if (ret)
1287 goto out;
1288
1289 /* rxfh.indir_size == 0 means reset the indir table to default (master
1290 * context) or delete the context (other RSS contexts).
1291 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
1292 */
1293 if (rxfh.indir_size &&
1294 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) {
1295 indir = (u32 *)rss_config;
1296 ret = ethtool_copy_validate_indir(indir,
1297 useraddr + rss_cfg_offset,
1298 &rx_rings,
1299 rxfh.indir_size);
1300 if (ret)
1301 goto out;
1302 } else if (rxfh.indir_size == 0) {
1303 if (rxfh.rss_context == 0) {
1304 indir = (u32 *)rss_config;
1305 for (i = 0; i < dev_indir_size; i++)
1306 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1307 } else {
1308 delete = true;
1309 }
1310 }
1311
1312 if (rxfh.key_size) {
1313 hkey = rss_config + indir_bytes;
1314 if (copy_from_user(hkey,
1315 useraddr + rss_cfg_offset + indir_bytes,
1316 rxfh.key_size)) {
1317 ret = -EFAULT;
1318 goto out;
1319 }
1320 }
1321
1322 if (rxfh.rss_context)
1323 ret = ops->set_rxfh_context(dev, indir, hkey, rxfh.hfunc,
1324 &rxfh.rss_context, delete);
1325 else
1326 ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc);
1327 if (ret)
1328 goto out;
1329
1330 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context),
1331 &rxfh.rss_context, sizeof(rxfh.rss_context)))
1332 ret = -EFAULT;
1333
1334 if (!rxfh.rss_context) {
1335 /* indicate whether rxfh was set to default */
1336 if (rxfh.indir_size == 0)
1337 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1338 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1339 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1340 }
1341
1342out:
1343 kfree(rss_config);
1344 return ret;
1345}
1346
1347static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
1348{
1349 struct ethtool_regs regs;
1350 const struct ethtool_ops *ops = dev->ethtool_ops;
1351 void *regbuf;
1352 int reglen, ret;
1353
1354 if (!ops->get_regs || !ops->get_regs_len)
1355 return -EOPNOTSUPP;
1356
1357 if (copy_from_user(®s, useraddr, sizeof(regs)))
1358 return -EFAULT;
1359
1360 reglen = ops->get_regs_len(dev);
1361 if (reglen <= 0)
1362 return reglen;
1363
1364 if (regs.len > reglen)
1365 regs.len = reglen;
1366
1367 regbuf = vzalloc(reglen);
1368 if (!regbuf)
1369 return -ENOMEM;
1370
1371 if (regs.len < reglen)
1372 reglen = regs.len;
1373
1374 ops->get_regs(dev, ®s, regbuf);
1375
1376 ret = -EFAULT;
1377 if (copy_to_user(useraddr, ®s, sizeof(regs)))
1378 goto out;
1379 useraddr += offsetof(struct ethtool_regs, data);
1380 if (copy_to_user(useraddr, regbuf, reglen))
1381 goto out;
1382 ret = 0;
1383
1384 out:
1385 vfree(regbuf);
1386 return ret;
1387}
1388
1389static int ethtool_reset(struct net_device *dev, char __user *useraddr)
1390{
1391 struct ethtool_value reset;
1392 int ret;
1393
1394 if (!dev->ethtool_ops->reset)
1395 return -EOPNOTSUPP;
1396
1397 if (copy_from_user(&reset, useraddr, sizeof(reset)))
1398 return -EFAULT;
1399
1400 ret = dev->ethtool_ops->reset(dev, &reset.data);
1401 if (ret)
1402 return ret;
1403
1404 if (copy_to_user(useraddr, &reset, sizeof(reset)))
1405 return -EFAULT;
1406 return 0;
1407}
1408
1409static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
1410{
1411 struct ethtool_wolinfo wol;
1412
1413 if (!dev->ethtool_ops->get_wol)
1414 return -EOPNOTSUPP;
1415
1416 memset(&wol, 0, sizeof(struct ethtool_wolinfo));
1417 wol.cmd = ETHTOOL_GWOL;
1418 dev->ethtool_ops->get_wol(dev, &wol);
1419
1420 if (copy_to_user(useraddr, &wol, sizeof(wol)))
1421 return -EFAULT;
1422 return 0;
1423}
1424
1425static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
1426{
1427 struct ethtool_wolinfo wol;
1428 int ret;
1429
1430 if (!dev->ethtool_ops->set_wol)
1431 return -EOPNOTSUPP;
1432
1433 if (copy_from_user(&wol, useraddr, sizeof(wol)))
1434 return -EFAULT;
1435
1436 ret = dev->ethtool_ops->set_wol(dev, &wol);
1437 if (ret)
1438 return ret;
1439
1440 dev->wol_enabled = !!wol.wolopts;
1441 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL);
1442
1443 return 0;
1444}
1445
1446static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
1447{
1448 struct ethtool_eee edata;
1449 int rc;
1450
1451 if (!dev->ethtool_ops->get_eee)
1452 return -EOPNOTSUPP;
1453
1454 memset(&edata, 0, sizeof(struct ethtool_eee));
1455 edata.cmd = ETHTOOL_GEEE;
1456 rc = dev->ethtool_ops->get_eee(dev, &edata);
1457
1458 if (rc)
1459 return rc;
1460
1461 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1462 return -EFAULT;
1463
1464 return 0;
1465}
1466
1467static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
1468{
1469 struct ethtool_eee edata;
1470 int ret;
1471
1472 if (!dev->ethtool_ops->set_eee)
1473 return -EOPNOTSUPP;
1474
1475 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1476 return -EFAULT;
1477
1478 ret = dev->ethtool_ops->set_eee(dev, &edata);
1479 if (!ret)
1480 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL);
1481 return ret;
1482}
1483
1484static int ethtool_nway_reset(struct net_device *dev)
1485{
1486 if (!dev->ethtool_ops->nway_reset)
1487 return -EOPNOTSUPP;
1488
1489 return dev->ethtool_ops->nway_reset(dev);
1490}
1491
1492static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
1493{
1494 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
1495 int link = __ethtool_get_link(dev);
1496
1497 if (link < 0)
1498 return link;
1499
1500 edata.data = link;
1501 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1502 return -EFAULT;
1503 return 0;
1504}
1505
1506static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
1507 int (*getter)(struct net_device *,
1508 struct ethtool_eeprom *, u8 *),
1509 u32 total_len)
1510{
1511 struct ethtool_eeprom eeprom;
1512 void __user *userbuf = useraddr + sizeof(eeprom);
1513 u32 bytes_remaining;
1514 u8 *data;
1515 int ret = 0;
1516
1517 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1518 return -EFAULT;
1519
1520 /* Check for wrap and zero */
1521 if (eeprom.offset + eeprom.len <= eeprom.offset)
1522 return -EINVAL;
1523
1524 /* Check for exceeding total eeprom len */
1525 if (eeprom.offset + eeprom.len > total_len)
1526 return -EINVAL;
1527
1528 data = kzalloc(PAGE_SIZE, GFP_USER);
1529 if (!data)
1530 return -ENOMEM;
1531
1532 bytes_remaining = eeprom.len;
1533 while (bytes_remaining > 0) {
1534 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1535
1536 ret = getter(dev, &eeprom, data);
1537 if (ret)
1538 break;
1539 if (copy_to_user(userbuf, data, eeprom.len)) {
1540 ret = -EFAULT;
1541 break;
1542 }
1543 userbuf += eeprom.len;
1544 eeprom.offset += eeprom.len;
1545 bytes_remaining -= eeprom.len;
1546 }
1547
1548 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
1549 eeprom.offset -= eeprom.len;
1550 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
1551 ret = -EFAULT;
1552
1553 kfree(data);
1554 return ret;
1555}
1556
1557static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
1558{
1559 const struct ethtool_ops *ops = dev->ethtool_ops;
1560
1561 if (!ops->get_eeprom || !ops->get_eeprom_len ||
1562 !ops->get_eeprom_len(dev))
1563 return -EOPNOTSUPP;
1564
1565 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
1566 ops->get_eeprom_len(dev));
1567}
1568
1569static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
1570{
1571 struct ethtool_eeprom eeprom;
1572 const struct ethtool_ops *ops = dev->ethtool_ops;
1573 void __user *userbuf = useraddr + sizeof(eeprom);
1574 u32 bytes_remaining;
1575 u8 *data;
1576 int ret = 0;
1577
1578 if (!ops->set_eeprom || !ops->get_eeprom_len ||
1579 !ops->get_eeprom_len(dev))
1580 return -EOPNOTSUPP;
1581
1582 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1583 return -EFAULT;
1584
1585 /* Check for wrap and zero */
1586 if (eeprom.offset + eeprom.len <= eeprom.offset)
1587 return -EINVAL;
1588
1589 /* Check for exceeding total eeprom len */
1590 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1591 return -EINVAL;
1592
1593 data = kzalloc(PAGE_SIZE, GFP_USER);
1594 if (!data)
1595 return -ENOMEM;
1596
1597 bytes_remaining = eeprom.len;
1598 while (bytes_remaining > 0) {
1599 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1600
1601 if (copy_from_user(data, userbuf, eeprom.len)) {
1602 ret = -EFAULT;
1603 break;
1604 }
1605 ret = ops->set_eeprom(dev, &eeprom, data);
1606 if (ret)
1607 break;
1608 userbuf += eeprom.len;
1609 eeprom.offset += eeprom.len;
1610 bytes_remaining -= eeprom.len;
1611 }
1612
1613 kfree(data);
1614 return ret;
1615}
1616
1617static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1618 void __user *useraddr)
1619{
1620 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1621 int ret;
1622
1623 if (!dev->ethtool_ops->get_coalesce)
1624 return -EOPNOTSUPP;
1625
1626 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce);
1627 if (ret)
1628 return ret;
1629
1630 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1631 return -EFAULT;
1632 return 0;
1633}
1634
1635static bool
1636ethtool_set_coalesce_supported(struct net_device *dev,
1637 struct ethtool_coalesce *coalesce)
1638{
1639 u32 supported_params = dev->ethtool_ops->supported_coalesce_params;
1640 u32 nonzero_params = 0;
1641
1642 if (coalesce->rx_coalesce_usecs)
1643 nonzero_params |= ETHTOOL_COALESCE_RX_USECS;
1644 if (coalesce->rx_max_coalesced_frames)
1645 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES;
1646 if (coalesce->rx_coalesce_usecs_irq)
1647 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ;
1648 if (coalesce->rx_max_coalesced_frames_irq)
1649 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ;
1650 if (coalesce->tx_coalesce_usecs)
1651 nonzero_params |= ETHTOOL_COALESCE_TX_USECS;
1652 if (coalesce->tx_max_coalesced_frames)
1653 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES;
1654 if (coalesce->tx_coalesce_usecs_irq)
1655 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ;
1656 if (coalesce->tx_max_coalesced_frames_irq)
1657 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ;
1658 if (coalesce->stats_block_coalesce_usecs)
1659 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS;
1660 if (coalesce->use_adaptive_rx_coalesce)
1661 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX;
1662 if (coalesce->use_adaptive_tx_coalesce)
1663 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX;
1664 if (coalesce->pkt_rate_low)
1665 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW;
1666 if (coalesce->rx_coalesce_usecs_low)
1667 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW;
1668 if (coalesce->rx_max_coalesced_frames_low)
1669 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW;
1670 if (coalesce->tx_coalesce_usecs_low)
1671 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW;
1672 if (coalesce->tx_max_coalesced_frames_low)
1673 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW;
1674 if (coalesce->pkt_rate_high)
1675 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH;
1676 if (coalesce->rx_coalesce_usecs_high)
1677 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH;
1678 if (coalesce->rx_max_coalesced_frames_high)
1679 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH;
1680 if (coalesce->tx_coalesce_usecs_high)
1681 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH;
1682 if (coalesce->tx_max_coalesced_frames_high)
1683 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH;
1684 if (coalesce->rate_sample_interval)
1685 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL;
1686
1687 return (supported_params & nonzero_params) == nonzero_params;
1688}
1689
1690static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1691 void __user *useraddr)
1692{
1693 struct ethtool_coalesce coalesce;
1694 int ret;
1695
1696 if (!dev->ethtool_ops->set_coalesce)
1697 return -EOPNOTSUPP;
1698
1699 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1700 return -EFAULT;
1701
1702 if (!ethtool_set_coalesce_supported(dev, &coalesce))
1703 return -EOPNOTSUPP;
1704
1705 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce);
1706 if (!ret)
1707 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL);
1708 return ret;
1709}
1710
1711static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1712{
1713 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1714
1715 if (!dev->ethtool_ops->get_ringparam)
1716 return -EOPNOTSUPP;
1717
1718 dev->ethtool_ops->get_ringparam(dev, &ringparam);
1719
1720 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1721 return -EFAULT;
1722 return 0;
1723}
1724
1725static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1726{
1727 struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM };
1728 int ret;
1729
1730 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam)
1731 return -EOPNOTSUPP;
1732
1733 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1734 return -EFAULT;
1735
1736 dev->ethtool_ops->get_ringparam(dev, &max);
1737
1738 /* ensure new ring parameters are within the maximums */
1739 if (ringparam.rx_pending > max.rx_max_pending ||
1740 ringparam.rx_mini_pending > max.rx_mini_max_pending ||
1741 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending ||
1742 ringparam.tx_pending > max.tx_max_pending)
1743 return -EINVAL;
1744
1745 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam);
1746 if (!ret)
1747 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL);
1748 return ret;
1749}
1750
1751static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
1752 void __user *useraddr)
1753{
1754 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
1755
1756 if (!dev->ethtool_ops->get_channels)
1757 return -EOPNOTSUPP;
1758
1759 dev->ethtool_ops->get_channels(dev, &channels);
1760
1761 if (copy_to_user(useraddr, &channels, sizeof(channels)))
1762 return -EFAULT;
1763 return 0;
1764}
1765
1766static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
1767 void __user *useraddr)
1768{
1769 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS };
1770 u16 from_channel, to_channel;
1771 u32 max_rx_in_use = 0;
1772 unsigned int i;
1773 int ret;
1774
1775 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels)
1776 return -EOPNOTSUPP;
1777
1778 if (copy_from_user(&channels, useraddr, sizeof(channels)))
1779 return -EFAULT;
1780
1781 dev->ethtool_ops->get_channels(dev, &curr);
1782
1783 if (channels.rx_count == curr.rx_count &&
1784 channels.tx_count == curr.tx_count &&
1785 channels.combined_count == curr.combined_count &&
1786 channels.other_count == curr.other_count)
1787 return 0;
1788
1789 /* ensure new counts are within the maximums */
1790 if (channels.rx_count > curr.max_rx ||
1791 channels.tx_count > curr.max_tx ||
1792 channels.combined_count > curr.max_combined ||
1793 channels.other_count > curr.max_other)
1794 return -EINVAL;
1795
1796 /* ensure there is at least one RX and one TX channel */
1797 if (!channels.combined_count &&
1798 (!channels.rx_count || !channels.tx_count))
1799 return -EINVAL;
1800
1801 /* ensure the new Rx count fits within the configured Rx flow
1802 * indirection table settings */
1803 if (netif_is_rxfh_configured(dev) &&
1804 !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) &&
1805 (channels.combined_count + channels.rx_count) <= max_rx_in_use)
1806 return -EINVAL;
1807
1808 /* Disabling channels, query zero-copy AF_XDP sockets */
1809 from_channel = channels.combined_count +
1810 min(channels.rx_count, channels.tx_count);
1811 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count);
1812 for (i = from_channel; i < to_channel; i++)
1813 if (xsk_get_pool_from_qid(dev, i))
1814 return -EINVAL;
1815
1816 ret = dev->ethtool_ops->set_channels(dev, &channels);
1817 if (!ret)
1818 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL);
1819 return ret;
1820}
1821
1822static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1823{
1824 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM };
1825
1826 if (!dev->ethtool_ops->get_pauseparam)
1827 return -EOPNOTSUPP;
1828
1829 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1830
1831 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1832 return -EFAULT;
1833 return 0;
1834}
1835
1836static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1837{
1838 struct ethtool_pauseparam pauseparam;
1839 int ret;
1840
1841 if (!dev->ethtool_ops->set_pauseparam)
1842 return -EOPNOTSUPP;
1843
1844 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1845 return -EFAULT;
1846
1847 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1848 if (!ret)
1849 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL);
1850 return ret;
1851}
1852
1853static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1854{
1855 struct ethtool_test test;
1856 const struct ethtool_ops *ops = dev->ethtool_ops;
1857 u64 *data;
1858 int ret, test_len;
1859
1860 if (!ops->self_test || !ops->get_sset_count)
1861 return -EOPNOTSUPP;
1862
1863 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
1864 if (test_len < 0)
1865 return test_len;
1866 WARN_ON(test_len == 0);
1867
1868 if (copy_from_user(&test, useraddr, sizeof(test)))
1869 return -EFAULT;
1870
1871 test.len = test_len;
1872 data = kcalloc(test_len, sizeof(u64), GFP_USER);
1873 if (!data)
1874 return -ENOMEM;
1875
1876 netif_testing_on(dev);
1877 ops->self_test(dev, &test, data);
1878 netif_testing_off(dev);
1879
1880 ret = -EFAULT;
1881 if (copy_to_user(useraddr, &test, sizeof(test)))
1882 goto out;
1883 useraddr += sizeof(test);
1884 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1885 goto out;
1886 ret = 0;
1887
1888 out:
1889 kfree(data);
1890 return ret;
1891}
1892
1893static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1894{
1895 struct ethtool_gstrings gstrings;
1896 u8 *data;
1897 int ret;
1898
1899 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1900 return -EFAULT;
1901
1902 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
1903 if (ret < 0)
1904 return ret;
1905 if (ret > S32_MAX / ETH_GSTRING_LEN)
1906 return -ENOMEM;
1907 WARN_ON_ONCE(!ret);
1908
1909 gstrings.len = ret;
1910
1911 if (gstrings.len) {
1912 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN));
1913 if (!data)
1914 return -ENOMEM;
1915
1916 __ethtool_get_strings(dev, gstrings.string_set, data);
1917 } else {
1918 data = NULL;
1919 }
1920
1921 ret = -EFAULT;
1922 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1923 goto out;
1924 useraddr += sizeof(gstrings);
1925 if (gstrings.len &&
1926 copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1927 goto out;
1928 ret = 0;
1929
1930out:
1931 vfree(data);
1932 return ret;
1933}
1934
1935__printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...)
1936{
1937 va_list args;
1938
1939 va_start(args, fmt);
1940 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args);
1941 va_end(args);
1942
1943 *data += ETH_GSTRING_LEN;
1944}
1945EXPORT_SYMBOL(ethtool_sprintf);
1946
1947static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1948{
1949 struct ethtool_value id;
1950 static bool busy;
1951 const struct ethtool_ops *ops = dev->ethtool_ops;
1952 int rc;
1953
1954 if (!ops->set_phys_id)
1955 return -EOPNOTSUPP;
1956
1957 if (busy)
1958 return -EBUSY;
1959
1960 if (copy_from_user(&id, useraddr, sizeof(id)))
1961 return -EFAULT;
1962
1963 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
1964 if (rc < 0)
1965 return rc;
1966
1967 /* Drop the RTNL lock while waiting, but prevent reentry or
1968 * removal of the device.
1969 */
1970 busy = true;
1971 dev_hold(dev);
1972 rtnl_unlock();
1973
1974 if (rc == 0) {
1975 /* Driver will handle this itself */
1976 schedule_timeout_interruptible(
1977 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
1978 } else {
1979 /* Driver expects to be called at twice the frequency in rc */
1980 int n = rc * 2, interval = HZ / n;
1981 u64 count = n * id.data, i = 0;
1982
1983 do {
1984 rtnl_lock();
1985 rc = ops->set_phys_id(dev,
1986 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
1987 rtnl_unlock();
1988 if (rc)
1989 break;
1990 schedule_timeout_interruptible(interval);
1991 } while (!signal_pending(current) && (!id.data || i < count));
1992 }
1993
1994 rtnl_lock();
1995 dev_put(dev);
1996 busy = false;
1997
1998 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
1999 return rc;
2000}
2001
2002static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
2003{
2004 struct ethtool_stats stats;
2005 const struct ethtool_ops *ops = dev->ethtool_ops;
2006 u64 *data;
2007 int ret, n_stats;
2008
2009 if (!ops->get_ethtool_stats || !ops->get_sset_count)
2010 return -EOPNOTSUPP;
2011
2012 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
2013 if (n_stats < 0)
2014 return n_stats;
2015 if (n_stats > S32_MAX / sizeof(u64))
2016 return -ENOMEM;
2017 WARN_ON_ONCE(!n_stats);
2018 if (copy_from_user(&stats, useraddr, sizeof(stats)))
2019 return -EFAULT;
2020
2021 stats.n_stats = n_stats;
2022
2023 if (n_stats) {
2024 data = vzalloc(array_size(n_stats, sizeof(u64)));
2025 if (!data)
2026 return -ENOMEM;
2027 ops->get_ethtool_stats(dev, &stats, data);
2028 } else {
2029 data = NULL;
2030 }
2031
2032 ret = -EFAULT;
2033 if (copy_to_user(useraddr, &stats, sizeof(stats)))
2034 goto out;
2035 useraddr += sizeof(stats);
2036 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64))))
2037 goto out;
2038 ret = 0;
2039
2040 out:
2041 vfree(data);
2042 return ret;
2043}
2044
2045static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
2046{
2047 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops;
2048 const struct ethtool_ops *ops = dev->ethtool_ops;
2049 struct phy_device *phydev = dev->phydev;
2050 struct ethtool_stats stats;
2051 u64 *data;
2052 int ret, n_stats;
2053
2054 if (!phydev && (!ops->get_ethtool_phy_stats || !ops->get_sset_count))
2055 return -EOPNOTSUPP;
2056
2057 if (dev->phydev && !ops->get_ethtool_phy_stats &&
2058 phy_ops && phy_ops->get_sset_count)
2059 n_stats = phy_ops->get_sset_count(dev->phydev);
2060 else
2061 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS);
2062 if (n_stats < 0)
2063 return n_stats;
2064 if (n_stats > S32_MAX / sizeof(u64))
2065 return -ENOMEM;
2066 WARN_ON_ONCE(!n_stats);
2067
2068 if (copy_from_user(&stats, useraddr, sizeof(stats)))
2069 return -EFAULT;
2070
2071 stats.n_stats = n_stats;
2072
2073 if (n_stats) {
2074 data = vzalloc(array_size(n_stats, sizeof(u64)));
2075 if (!data)
2076 return -ENOMEM;
2077
2078 if (dev->phydev && !ops->get_ethtool_phy_stats &&
2079 phy_ops && phy_ops->get_stats) {
2080 ret = phy_ops->get_stats(dev->phydev, &stats, data);
2081 if (ret < 0)
2082 goto out;
2083 } else {
2084 ops->get_ethtool_phy_stats(dev, &stats, data);
2085 }
2086 } else {
2087 data = NULL;
2088 }
2089
2090 ret = -EFAULT;
2091 if (copy_to_user(useraddr, &stats, sizeof(stats)))
2092 goto out;
2093 useraddr += sizeof(stats);
2094 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64))))
2095 goto out;
2096 ret = 0;
2097
2098 out:
2099 vfree(data);
2100 return ret;
2101}
2102
2103static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
2104{
2105 struct ethtool_perm_addr epaddr;
2106
2107 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
2108 return -EFAULT;
2109
2110 if (epaddr.size < dev->addr_len)
2111 return -ETOOSMALL;
2112 epaddr.size = dev->addr_len;
2113
2114 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
2115 return -EFAULT;
2116 useraddr += sizeof(epaddr);
2117 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
2118 return -EFAULT;
2119 return 0;
2120}
2121
2122static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
2123 u32 cmd, u32 (*actor)(struct net_device *))
2124{
2125 struct ethtool_value edata = { .cmd = cmd };
2126
2127 if (!actor)
2128 return -EOPNOTSUPP;
2129
2130 edata.data = actor(dev);
2131
2132 if (copy_to_user(useraddr, &edata, sizeof(edata)))
2133 return -EFAULT;
2134 return 0;
2135}
2136
2137static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
2138 void (*actor)(struct net_device *, u32))
2139{
2140 struct ethtool_value edata;
2141
2142 if (!actor)
2143 return -EOPNOTSUPP;
2144
2145 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2146 return -EFAULT;
2147
2148 actor(dev, edata.data);
2149 return 0;
2150}
2151
2152static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
2153 int (*actor)(struct net_device *, u32))
2154{
2155 struct ethtool_value edata;
2156
2157 if (!actor)
2158 return -EOPNOTSUPP;
2159
2160 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2161 return -EFAULT;
2162
2163 return actor(dev, edata.data);
2164}
2165
2166static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
2167 char __user *useraddr)
2168{
2169 struct ethtool_flash efl;
2170
2171 if (copy_from_user(&efl, useraddr, sizeof(efl)))
2172 return -EFAULT;
2173 efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
2174
2175 if (!dev->ethtool_ops->flash_device)
2176 return devlink_compat_flash_update(dev, efl.data);
2177
2178 return dev->ethtool_ops->flash_device(dev, &efl);
2179}
2180
2181static int ethtool_set_dump(struct net_device *dev,
2182 void __user *useraddr)
2183{
2184 struct ethtool_dump dump;
2185
2186 if (!dev->ethtool_ops->set_dump)
2187 return -EOPNOTSUPP;
2188
2189 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2190 return -EFAULT;
2191
2192 return dev->ethtool_ops->set_dump(dev, &dump);
2193}
2194
2195static int ethtool_get_dump_flag(struct net_device *dev,
2196 void __user *useraddr)
2197{
2198 int ret;
2199 struct ethtool_dump dump;
2200 const struct ethtool_ops *ops = dev->ethtool_ops;
2201
2202 if (!ops->get_dump_flag)
2203 return -EOPNOTSUPP;
2204
2205 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2206 return -EFAULT;
2207
2208 ret = ops->get_dump_flag(dev, &dump);
2209 if (ret)
2210 return ret;
2211
2212 if (copy_to_user(useraddr, &dump, sizeof(dump)))
2213 return -EFAULT;
2214 return 0;
2215}
2216
2217static int ethtool_get_dump_data(struct net_device *dev,
2218 void __user *useraddr)
2219{
2220 int ret;
2221 __u32 len;
2222 struct ethtool_dump dump, tmp;
2223 const struct ethtool_ops *ops = dev->ethtool_ops;
2224 void *data = NULL;
2225
2226 if (!ops->get_dump_data || !ops->get_dump_flag)
2227 return -EOPNOTSUPP;
2228
2229 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2230 return -EFAULT;
2231
2232 memset(&tmp, 0, sizeof(tmp));
2233 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
2234 ret = ops->get_dump_flag(dev, &tmp);
2235 if (ret)
2236 return ret;
2237
2238 len = min(tmp.len, dump.len);
2239 if (!len)
2240 return -EFAULT;
2241
2242 /* Don't ever let the driver think there's more space available
2243 * than it requested with .get_dump_flag().
2244 */
2245 dump.len = len;
2246
2247 /* Always allocate enough space to hold the whole thing so that the
2248 * driver does not need to check the length and bother with partial
2249 * dumping.
2250 */
2251 data = vzalloc(tmp.len);
2252 if (!data)
2253 return -ENOMEM;
2254 ret = ops->get_dump_data(dev, &dump, data);
2255 if (ret)
2256 goto out;
2257
2258 /* There are two sane possibilities:
2259 * 1. The driver's .get_dump_data() does not touch dump.len.
2260 * 2. Or it may set dump.len to how much it really writes, which
2261 * should be tmp.len (or len if it can do a partial dump).
2262 * In any case respond to userspace with the actual length of data
2263 * it's receiving.
2264 */
2265 WARN_ON(dump.len != len && dump.len != tmp.len);
2266 dump.len = len;
2267
2268 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
2269 ret = -EFAULT;
2270 goto out;
2271 }
2272 useraddr += offsetof(struct ethtool_dump, data);
2273 if (copy_to_user(useraddr, data, len))
2274 ret = -EFAULT;
2275out:
2276 vfree(data);
2277 return ret;
2278}
2279
2280static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
2281{
2282 struct ethtool_ts_info info;
2283 int err;
2284
2285 err = __ethtool_get_ts_info(dev, &info);
2286 if (err)
2287 return err;
2288
2289 if (copy_to_user(useraddr, &info, sizeof(info)))
2290 return -EFAULT;
2291
2292 return 0;
2293}
2294
2295int ethtool_get_module_info_call(struct net_device *dev,
2296 struct ethtool_modinfo *modinfo)
2297{
2298 const struct ethtool_ops *ops = dev->ethtool_ops;
2299 struct phy_device *phydev = dev->phydev;
2300
2301 if (dev->sfp_bus)
2302 return sfp_get_module_info(dev->sfp_bus, modinfo);
2303
2304 if (phydev && phydev->drv && phydev->drv->module_info)
2305 return phydev->drv->module_info(phydev, modinfo);
2306
2307 if (ops->get_module_info)
2308 return ops->get_module_info(dev, modinfo);
2309
2310 return -EOPNOTSUPP;
2311}
2312
2313static int ethtool_get_module_info(struct net_device *dev,
2314 void __user *useraddr)
2315{
2316 int ret;
2317 struct ethtool_modinfo modinfo;
2318
2319 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
2320 return -EFAULT;
2321
2322 ret = ethtool_get_module_info_call(dev, &modinfo);
2323 if (ret)
2324 return ret;
2325
2326 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
2327 return -EFAULT;
2328
2329 return 0;
2330}
2331
2332int ethtool_get_module_eeprom_call(struct net_device *dev,
2333 struct ethtool_eeprom *ee, u8 *data)
2334{
2335 const struct ethtool_ops *ops = dev->ethtool_ops;
2336 struct phy_device *phydev = dev->phydev;
2337
2338 if (dev->sfp_bus)
2339 return sfp_get_module_eeprom(dev->sfp_bus, ee, data);
2340
2341 if (phydev && phydev->drv && phydev->drv->module_eeprom)
2342 return phydev->drv->module_eeprom(phydev, ee, data);
2343
2344 if (ops->get_module_eeprom)
2345 return ops->get_module_eeprom(dev, ee, data);
2346
2347 return -EOPNOTSUPP;
2348}
2349
2350static int ethtool_get_module_eeprom(struct net_device *dev,
2351 void __user *useraddr)
2352{
2353 int ret;
2354 struct ethtool_modinfo modinfo;
2355
2356 ret = ethtool_get_module_info_call(dev, &modinfo);
2357 if (ret)
2358 return ret;
2359
2360 return ethtool_get_any_eeprom(dev, useraddr,
2361 ethtool_get_module_eeprom_call,
2362 modinfo.eeprom_len);
2363}
2364
2365static int ethtool_tunable_valid(const struct ethtool_tunable *tuna)
2366{
2367 switch (tuna->id) {
2368 case ETHTOOL_RX_COPYBREAK:
2369 case ETHTOOL_TX_COPYBREAK:
2370 if (tuna->len != sizeof(u32) ||
2371 tuna->type_id != ETHTOOL_TUNABLE_U32)
2372 return -EINVAL;
2373 break;
2374 case ETHTOOL_PFC_PREVENTION_TOUT:
2375 if (tuna->len != sizeof(u16) ||
2376 tuna->type_id != ETHTOOL_TUNABLE_U16)
2377 return -EINVAL;
2378 break;
2379 default:
2380 return -EINVAL;
2381 }
2382
2383 return 0;
2384}
2385
2386static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr)
2387{
2388 int ret;
2389 struct ethtool_tunable tuna;
2390 const struct ethtool_ops *ops = dev->ethtool_ops;
2391 void *data;
2392
2393 if (!ops->get_tunable)
2394 return -EOPNOTSUPP;
2395 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2396 return -EFAULT;
2397 ret = ethtool_tunable_valid(&tuna);
2398 if (ret)
2399 return ret;
2400 data = kzalloc(tuna.len, GFP_USER);
2401 if (!data)
2402 return -ENOMEM;
2403 ret = ops->get_tunable(dev, &tuna, data);
2404 if (ret)
2405 goto out;
2406 useraddr += sizeof(tuna);
2407 ret = -EFAULT;
2408 if (copy_to_user(useraddr, data, tuna.len))
2409 goto out;
2410 ret = 0;
2411
2412out:
2413 kfree(data);
2414 return ret;
2415}
2416
2417static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr)
2418{
2419 int ret;
2420 struct ethtool_tunable tuna;
2421 const struct ethtool_ops *ops = dev->ethtool_ops;
2422 void *data;
2423
2424 if (!ops->set_tunable)
2425 return -EOPNOTSUPP;
2426 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2427 return -EFAULT;
2428 ret = ethtool_tunable_valid(&tuna);
2429 if (ret)
2430 return ret;
2431 useraddr += sizeof(tuna);
2432 data = memdup_user(useraddr, tuna.len);
2433 if (IS_ERR(data))
2434 return PTR_ERR(data);
2435 ret = ops->set_tunable(dev, &tuna, data);
2436
2437 kfree(data);
2438 return ret;
2439}
2440
2441static noinline_for_stack int
2442ethtool_get_per_queue_coalesce(struct net_device *dev,
2443 void __user *useraddr,
2444 struct ethtool_per_queue_op *per_queue_opt)
2445{
2446 u32 bit;
2447 int ret;
2448 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2449
2450 if (!dev->ethtool_ops->get_per_queue_coalesce)
2451 return -EOPNOTSUPP;
2452
2453 useraddr += sizeof(*per_queue_opt);
2454
2455 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask,
2456 MAX_NUM_QUEUE);
2457
2458 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2459 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
2460
2461 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce);
2462 if (ret != 0)
2463 return ret;
2464 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
2465 return -EFAULT;
2466 useraddr += sizeof(coalesce);
2467 }
2468
2469 return 0;
2470}
2471
2472static noinline_for_stack int
2473ethtool_set_per_queue_coalesce(struct net_device *dev,
2474 void __user *useraddr,
2475 struct ethtool_per_queue_op *per_queue_opt)
2476{
2477 u32 bit;
2478 int i, ret = 0;
2479 int n_queue;
2480 struct ethtool_coalesce *backup = NULL, *tmp = NULL;
2481 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2482
2483 if ((!dev->ethtool_ops->set_per_queue_coalesce) ||
2484 (!dev->ethtool_ops->get_per_queue_coalesce))
2485 return -EOPNOTSUPP;
2486
2487 useraddr += sizeof(*per_queue_opt);
2488
2489 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE);
2490 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE);
2491 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL);
2492 if (!backup)
2493 return -ENOMEM;
2494
2495 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2496 struct ethtool_coalesce coalesce;
2497
2498 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp);
2499 if (ret != 0)
2500 goto roll_back;
2501
2502 tmp++;
2503
2504 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) {
2505 ret = -EFAULT;
2506 goto roll_back;
2507 }
2508
2509 if (!ethtool_set_coalesce_supported(dev, &coalesce)) {
2510 ret = -EOPNOTSUPP;
2511 goto roll_back;
2512 }
2513
2514 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce);
2515 if (ret != 0)
2516 goto roll_back;
2517
2518 useraddr += sizeof(coalesce);
2519 }
2520
2521roll_back:
2522 if (ret != 0) {
2523 tmp = backup;
2524 for_each_set_bit(i, queue_mask, bit) {
2525 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp);
2526 tmp++;
2527 }
2528 }
2529 kfree(backup);
2530
2531 return ret;
2532}
2533
2534static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev,
2535 void __user *useraddr, u32 sub_cmd)
2536{
2537 struct ethtool_per_queue_op per_queue_opt;
2538
2539 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt)))
2540 return -EFAULT;
2541
2542 if (per_queue_opt.sub_command != sub_cmd)
2543 return -EINVAL;
2544
2545 switch (per_queue_opt.sub_command) {
2546 case ETHTOOL_GCOALESCE:
2547 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt);
2548 case ETHTOOL_SCOALESCE:
2549 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt);
2550 default:
2551 return -EOPNOTSUPP;
2552 }
2553}
2554
2555static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna)
2556{
2557 switch (tuna->id) {
2558 case ETHTOOL_PHY_DOWNSHIFT:
2559 case ETHTOOL_PHY_FAST_LINK_DOWN:
2560 if (tuna->len != sizeof(u8) ||
2561 tuna->type_id != ETHTOOL_TUNABLE_U8)
2562 return -EINVAL;
2563 break;
2564 case ETHTOOL_PHY_EDPD:
2565 if (tuna->len != sizeof(u16) ||
2566 tuna->type_id != ETHTOOL_TUNABLE_U16)
2567 return -EINVAL;
2568 break;
2569 default:
2570 return -EINVAL;
2571 }
2572
2573 return 0;
2574}
2575
2576static int get_phy_tunable(struct net_device *dev, void __user *useraddr)
2577{
2578 struct phy_device *phydev = dev->phydev;
2579 struct ethtool_tunable tuna;
2580 bool phy_drv_tunable;
2581 void *data;
2582 int ret;
2583
2584 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable;
2585 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable)
2586 return -EOPNOTSUPP;
2587 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2588 return -EFAULT;
2589 ret = ethtool_phy_tunable_valid(&tuna);
2590 if (ret)
2591 return ret;
2592 data = kzalloc(tuna.len, GFP_USER);
2593 if (!data)
2594 return -ENOMEM;
2595 if (phy_drv_tunable) {
2596 mutex_lock(&phydev->lock);
2597 ret = phydev->drv->get_tunable(phydev, &tuna, data);
2598 mutex_unlock(&phydev->lock);
2599 } else {
2600 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data);
2601 }
2602 if (ret)
2603 goto out;
2604 useraddr += sizeof(tuna);
2605 ret = -EFAULT;
2606 if (copy_to_user(useraddr, data, tuna.len))
2607 goto out;
2608 ret = 0;
2609
2610out:
2611 kfree(data);
2612 return ret;
2613}
2614
2615static int set_phy_tunable(struct net_device *dev, void __user *useraddr)
2616{
2617 struct phy_device *phydev = dev->phydev;
2618 struct ethtool_tunable tuna;
2619 bool phy_drv_tunable;
2620 void *data;
2621 int ret;
2622
2623 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable;
2624 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable)
2625 return -EOPNOTSUPP;
2626 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2627 return -EFAULT;
2628 ret = ethtool_phy_tunable_valid(&tuna);
2629 if (ret)
2630 return ret;
2631 useraddr += sizeof(tuna);
2632 data = memdup_user(useraddr, tuna.len);
2633 if (IS_ERR(data))
2634 return PTR_ERR(data);
2635 if (phy_drv_tunable) {
2636 mutex_lock(&phydev->lock);
2637 ret = phydev->drv->set_tunable(phydev, &tuna, data);
2638 mutex_unlock(&phydev->lock);
2639 } else {
2640 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data);
2641 }
2642
2643 kfree(data);
2644 return ret;
2645}
2646
2647static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr)
2648{
2649 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM };
2650 int rc;
2651
2652 if (!dev->ethtool_ops->get_fecparam)
2653 return -EOPNOTSUPP;
2654
2655 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam);
2656 if (rc)
2657 return rc;
2658
2659 if (WARN_ON_ONCE(fecparam.reserved))
2660 fecparam.reserved = 0;
2661
2662 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam)))
2663 return -EFAULT;
2664 return 0;
2665}
2666
2667static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr)
2668{
2669 struct ethtool_fecparam fecparam;
2670
2671 if (!dev->ethtool_ops->set_fecparam)
2672 return -EOPNOTSUPP;
2673
2674 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam)))
2675 return -EFAULT;
2676
2677 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE)
2678 return -EINVAL;
2679
2680 fecparam.active_fec = 0;
2681 fecparam.reserved = 0;
2682
2683 return dev->ethtool_ops->set_fecparam(dev, &fecparam);
2684}
2685
2686/* The main entry point in this file. Called from net/core/dev_ioctl.c */
2687
2688int dev_ethtool(struct net *net, struct ifreq *ifr)
2689{
2690 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
2691 void __user *useraddr = ifr->ifr_data;
2692 u32 ethcmd, sub_cmd;
2693 int rc;
2694 netdev_features_t old_features;
2695
2696 if (!dev || !netif_device_present(dev))
2697 return -ENODEV;
2698
2699 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd)))
2700 return -EFAULT;
2701
2702 if (ethcmd == ETHTOOL_PERQUEUE) {
2703 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd)))
2704 return -EFAULT;
2705 } else {
2706 sub_cmd = ethcmd;
2707 }
2708 /* Allow some commands to be done by anyone */
2709 switch (sub_cmd) {
2710 case ETHTOOL_GSET:
2711 case ETHTOOL_GDRVINFO:
2712 case ETHTOOL_GMSGLVL:
2713 case ETHTOOL_GLINK:
2714 case ETHTOOL_GCOALESCE:
2715 case ETHTOOL_GRINGPARAM:
2716 case ETHTOOL_GPAUSEPARAM:
2717 case ETHTOOL_GRXCSUM:
2718 case ETHTOOL_GTXCSUM:
2719 case ETHTOOL_GSG:
2720 case ETHTOOL_GSSET_INFO:
2721 case ETHTOOL_GSTRINGS:
2722 case ETHTOOL_GSTATS:
2723 case ETHTOOL_GPHYSTATS:
2724 case ETHTOOL_GTSO:
2725 case ETHTOOL_GPERMADDR:
2726 case ETHTOOL_GUFO:
2727 case ETHTOOL_GGSO:
2728 case ETHTOOL_GGRO:
2729 case ETHTOOL_GFLAGS:
2730 case ETHTOOL_GPFLAGS:
2731 case ETHTOOL_GRXFH:
2732 case ETHTOOL_GRXRINGS:
2733 case ETHTOOL_GRXCLSRLCNT:
2734 case ETHTOOL_GRXCLSRULE:
2735 case ETHTOOL_GRXCLSRLALL:
2736 case ETHTOOL_GRXFHINDIR:
2737 case ETHTOOL_GRSSH:
2738 case ETHTOOL_GFEATURES:
2739 case ETHTOOL_GCHANNELS:
2740 case ETHTOOL_GET_TS_INFO:
2741 case ETHTOOL_GEEE:
2742 case ETHTOOL_GTUNABLE:
2743 case ETHTOOL_PHY_GTUNABLE:
2744 case ETHTOOL_GLINKSETTINGS:
2745 case ETHTOOL_GFECPARAM:
2746 break;
2747 default:
2748 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
2749 return -EPERM;
2750 }
2751
2752 if (dev->ethtool_ops->begin) {
2753 rc = dev->ethtool_ops->begin(dev);
2754 if (rc < 0)
2755 return rc;
2756 }
2757 old_features = dev->features;
2758
2759 switch (ethcmd) {
2760 case ETHTOOL_GSET:
2761 rc = ethtool_get_settings(dev, useraddr);
2762 break;
2763 case ETHTOOL_SSET:
2764 rc = ethtool_set_settings(dev, useraddr);
2765 break;
2766 case ETHTOOL_GDRVINFO:
2767 rc = ethtool_get_drvinfo(dev, useraddr);
2768 break;
2769 case ETHTOOL_GREGS:
2770 rc = ethtool_get_regs(dev, useraddr);
2771 break;
2772 case ETHTOOL_GWOL:
2773 rc = ethtool_get_wol(dev, useraddr);
2774 break;
2775 case ETHTOOL_SWOL:
2776 rc = ethtool_set_wol(dev, useraddr);
2777 break;
2778 case ETHTOOL_GMSGLVL:
2779 rc = ethtool_get_value(dev, useraddr, ethcmd,
2780 dev->ethtool_ops->get_msglevel);
2781 break;
2782 case ETHTOOL_SMSGLVL:
2783 rc = ethtool_set_value_void(dev, useraddr,
2784 dev->ethtool_ops->set_msglevel);
2785 if (!rc)
2786 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL);
2787 break;
2788 case ETHTOOL_GEEE:
2789 rc = ethtool_get_eee(dev, useraddr);
2790 break;
2791 case ETHTOOL_SEEE:
2792 rc = ethtool_set_eee(dev, useraddr);
2793 break;
2794 case ETHTOOL_NWAY_RST:
2795 rc = ethtool_nway_reset(dev);
2796 break;
2797 case ETHTOOL_GLINK:
2798 rc = ethtool_get_link(dev, useraddr);
2799 break;
2800 case ETHTOOL_GEEPROM:
2801 rc = ethtool_get_eeprom(dev, useraddr);
2802 break;
2803 case ETHTOOL_SEEPROM:
2804 rc = ethtool_set_eeprom(dev, useraddr);
2805 break;
2806 case ETHTOOL_GCOALESCE:
2807 rc = ethtool_get_coalesce(dev, useraddr);
2808 break;
2809 case ETHTOOL_SCOALESCE:
2810 rc = ethtool_set_coalesce(dev, useraddr);
2811 break;
2812 case ETHTOOL_GRINGPARAM:
2813 rc = ethtool_get_ringparam(dev, useraddr);
2814 break;
2815 case ETHTOOL_SRINGPARAM:
2816 rc = ethtool_set_ringparam(dev, useraddr);
2817 break;
2818 case ETHTOOL_GPAUSEPARAM:
2819 rc = ethtool_get_pauseparam(dev, useraddr);
2820 break;
2821 case ETHTOOL_SPAUSEPARAM:
2822 rc = ethtool_set_pauseparam(dev, useraddr);
2823 break;
2824 case ETHTOOL_TEST:
2825 rc = ethtool_self_test(dev, useraddr);
2826 break;
2827 case ETHTOOL_GSTRINGS:
2828 rc = ethtool_get_strings(dev, useraddr);
2829 break;
2830 case ETHTOOL_PHYS_ID:
2831 rc = ethtool_phys_id(dev, useraddr);
2832 break;
2833 case ETHTOOL_GSTATS:
2834 rc = ethtool_get_stats(dev, useraddr);
2835 break;
2836 case ETHTOOL_GPERMADDR:
2837 rc = ethtool_get_perm_addr(dev, useraddr);
2838 break;
2839 case ETHTOOL_GFLAGS:
2840 rc = ethtool_get_value(dev, useraddr, ethcmd,
2841 __ethtool_get_flags);
2842 break;
2843 case ETHTOOL_SFLAGS:
2844 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
2845 break;
2846 case ETHTOOL_GPFLAGS:
2847 rc = ethtool_get_value(dev, useraddr, ethcmd,
2848 dev->ethtool_ops->get_priv_flags);
2849 if (!rc)
2850 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL);
2851 break;
2852 case ETHTOOL_SPFLAGS:
2853 rc = ethtool_set_value(dev, useraddr,
2854 dev->ethtool_ops->set_priv_flags);
2855 break;
2856 case ETHTOOL_GRXFH:
2857 case ETHTOOL_GRXRINGS:
2858 case ETHTOOL_GRXCLSRLCNT:
2859 case ETHTOOL_GRXCLSRULE:
2860 case ETHTOOL_GRXCLSRLALL:
2861 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
2862 break;
2863 case ETHTOOL_SRXFH:
2864 case ETHTOOL_SRXCLSRLDEL:
2865 case ETHTOOL_SRXCLSRLINS:
2866 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
2867 break;
2868 case ETHTOOL_FLASHDEV:
2869 rc = ethtool_flash_device(dev, useraddr);
2870 break;
2871 case ETHTOOL_RESET:
2872 rc = ethtool_reset(dev, useraddr);
2873 break;
2874 case ETHTOOL_GSSET_INFO:
2875 rc = ethtool_get_sset_info(dev, useraddr);
2876 break;
2877 case ETHTOOL_GRXFHINDIR:
2878 rc = ethtool_get_rxfh_indir(dev, useraddr);
2879 break;
2880 case ETHTOOL_SRXFHINDIR:
2881 rc = ethtool_set_rxfh_indir(dev, useraddr);
2882 break;
2883 case ETHTOOL_GRSSH:
2884 rc = ethtool_get_rxfh(dev, useraddr);
2885 break;
2886 case ETHTOOL_SRSSH:
2887 rc = ethtool_set_rxfh(dev, useraddr);
2888 break;
2889 case ETHTOOL_GFEATURES:
2890 rc = ethtool_get_features(dev, useraddr);
2891 break;
2892 case ETHTOOL_SFEATURES:
2893 rc = ethtool_set_features(dev, useraddr);
2894 break;
2895 case ETHTOOL_GTXCSUM:
2896 case ETHTOOL_GRXCSUM:
2897 case ETHTOOL_GSG:
2898 case ETHTOOL_GTSO:
2899 case ETHTOOL_GGSO:
2900 case ETHTOOL_GGRO:
2901 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
2902 break;
2903 case ETHTOOL_STXCSUM:
2904 case ETHTOOL_SRXCSUM:
2905 case ETHTOOL_SSG:
2906 case ETHTOOL_STSO:
2907 case ETHTOOL_SGSO:
2908 case ETHTOOL_SGRO:
2909 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
2910 break;
2911 case ETHTOOL_GCHANNELS:
2912 rc = ethtool_get_channels(dev, useraddr);
2913 break;
2914 case ETHTOOL_SCHANNELS:
2915 rc = ethtool_set_channels(dev, useraddr);
2916 break;
2917 case ETHTOOL_SET_DUMP:
2918 rc = ethtool_set_dump(dev, useraddr);
2919 break;
2920 case ETHTOOL_GET_DUMP_FLAG:
2921 rc = ethtool_get_dump_flag(dev, useraddr);
2922 break;
2923 case ETHTOOL_GET_DUMP_DATA:
2924 rc = ethtool_get_dump_data(dev, useraddr);
2925 break;
2926 case ETHTOOL_GET_TS_INFO:
2927 rc = ethtool_get_ts_info(dev, useraddr);
2928 break;
2929 case ETHTOOL_GMODULEINFO:
2930 rc = ethtool_get_module_info(dev, useraddr);
2931 break;
2932 case ETHTOOL_GMODULEEEPROM:
2933 rc = ethtool_get_module_eeprom(dev, useraddr);
2934 break;
2935 case ETHTOOL_GTUNABLE:
2936 rc = ethtool_get_tunable(dev, useraddr);
2937 break;
2938 case ETHTOOL_STUNABLE:
2939 rc = ethtool_set_tunable(dev, useraddr);
2940 break;
2941 case ETHTOOL_GPHYSTATS:
2942 rc = ethtool_get_phy_stats(dev, useraddr);
2943 break;
2944 case ETHTOOL_PERQUEUE:
2945 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd);
2946 break;
2947 case ETHTOOL_GLINKSETTINGS:
2948 rc = ethtool_get_link_ksettings(dev, useraddr);
2949 break;
2950 case ETHTOOL_SLINKSETTINGS:
2951 rc = ethtool_set_link_ksettings(dev, useraddr);
2952 break;
2953 case ETHTOOL_PHY_GTUNABLE:
2954 rc = get_phy_tunable(dev, useraddr);
2955 break;
2956 case ETHTOOL_PHY_STUNABLE:
2957 rc = set_phy_tunable(dev, useraddr);
2958 break;
2959 case ETHTOOL_GFECPARAM:
2960 rc = ethtool_get_fecparam(dev, useraddr);
2961 break;
2962 case ETHTOOL_SFECPARAM:
2963 rc = ethtool_set_fecparam(dev, useraddr);
2964 break;
2965 default:
2966 rc = -EOPNOTSUPP;
2967 }
2968
2969 if (dev->ethtool_ops->complete)
2970 dev->ethtool_ops->complete(dev);
2971
2972 if (old_features != dev->features)
2973 netdev_features_change(dev);
2974
2975 return rc;
2976}
2977
2978struct ethtool_rx_flow_key {
2979 struct flow_dissector_key_basic basic;
2980 union {
2981 struct flow_dissector_key_ipv4_addrs ipv4;
2982 struct flow_dissector_key_ipv6_addrs ipv6;
2983 };
2984 struct flow_dissector_key_ports tp;
2985 struct flow_dissector_key_ip ip;
2986 struct flow_dissector_key_vlan vlan;
2987 struct flow_dissector_key_eth_addrs eth_addrs;
2988} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
2989
2990struct ethtool_rx_flow_match {
2991 struct flow_dissector dissector;
2992 struct ethtool_rx_flow_key key;
2993 struct ethtool_rx_flow_key mask;
2994};
2995
2996struct ethtool_rx_flow_rule *
2997ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input)
2998{
2999 const struct ethtool_rx_flow_spec *fs = input->fs;
3000 static struct in6_addr zero_addr = {};
3001 struct ethtool_rx_flow_match *match;
3002 struct ethtool_rx_flow_rule *flow;
3003 struct flow_action_entry *act;
3004
3005 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) +
3006 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL);
3007 if (!flow)
3008 return ERR_PTR(-ENOMEM);
3009
3010 /* ethtool_rx supports only one single action per rule. */
3011 flow->rule = flow_rule_alloc(1);
3012 if (!flow->rule) {
3013 kfree(flow);
3014 return ERR_PTR(-ENOMEM);
3015 }
3016
3017 match = (struct ethtool_rx_flow_match *)flow->priv;
3018 flow->rule->match.dissector = &match->dissector;
3019 flow->rule->match.mask = &match->mask;
3020 flow->rule->match.key = &match->key;
3021
3022 match->mask.basic.n_proto = htons(0xffff);
3023
3024 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) {
3025 case ETHER_FLOW: {
3026 const struct ethhdr *ether_spec, *ether_m_spec;
3027
3028 ether_spec = &fs->h_u.ether_spec;
3029 ether_m_spec = &fs->m_u.ether_spec;
3030
3031 if (!is_zero_ether_addr(ether_m_spec->h_source)) {
3032 ether_addr_copy(match->key.eth_addrs.src,
3033 ether_spec->h_source);
3034 ether_addr_copy(match->mask.eth_addrs.src,
3035 ether_m_spec->h_source);
3036 }
3037 if (!is_zero_ether_addr(ether_m_spec->h_dest)) {
3038 ether_addr_copy(match->key.eth_addrs.dst,
3039 ether_spec->h_dest);
3040 ether_addr_copy(match->mask.eth_addrs.dst,
3041 ether_m_spec->h_dest);
3042 }
3043 if (ether_m_spec->h_proto) {
3044 match->key.basic.n_proto = ether_spec->h_proto;
3045 match->mask.basic.n_proto = ether_m_spec->h_proto;
3046 }
3047 }
3048 break;
3049 case TCP_V4_FLOW:
3050 case UDP_V4_FLOW: {
3051 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec;
3052
3053 match->key.basic.n_proto = htons(ETH_P_IP);
3054
3055 v4_spec = &fs->h_u.tcp_ip4_spec;
3056 v4_m_spec = &fs->m_u.tcp_ip4_spec;
3057
3058 if (v4_m_spec->ip4src) {
3059 match->key.ipv4.src = v4_spec->ip4src;
3060 match->mask.ipv4.src = v4_m_spec->ip4src;
3061 }
3062 if (v4_m_spec->ip4dst) {
3063 match->key.ipv4.dst = v4_spec->ip4dst;
3064 match->mask.ipv4.dst = v4_m_spec->ip4dst;
3065 }
3066 if (v4_m_spec->ip4src ||
3067 v4_m_spec->ip4dst) {
3068 match->dissector.used_keys |=
3069 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS);
3070 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] =
3071 offsetof(struct ethtool_rx_flow_key, ipv4);
3072 }
3073 if (v4_m_spec->psrc) {
3074 match->key.tp.src = v4_spec->psrc;
3075 match->mask.tp.src = v4_m_spec->psrc;
3076 }
3077 if (v4_m_spec->pdst) {
3078 match->key.tp.dst = v4_spec->pdst;
3079 match->mask.tp.dst = v4_m_spec->pdst;
3080 }
3081 if (v4_m_spec->psrc ||
3082 v4_m_spec->pdst) {
3083 match->dissector.used_keys |=
3084 BIT(FLOW_DISSECTOR_KEY_PORTS);
3085 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] =
3086 offsetof(struct ethtool_rx_flow_key, tp);
3087 }
3088 if (v4_m_spec->tos) {
3089 match->key.ip.tos = v4_spec->tos;
3090 match->mask.ip.tos = v4_m_spec->tos;
3091 match->dissector.used_keys |=
3092 BIT(FLOW_DISSECTOR_KEY_IP);
3093 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] =
3094 offsetof(struct ethtool_rx_flow_key, ip);
3095 }
3096 }
3097 break;
3098 case TCP_V6_FLOW:
3099 case UDP_V6_FLOW: {
3100 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec;
3101
3102 match->key.basic.n_proto = htons(ETH_P_IPV6);
3103
3104 v6_spec = &fs->h_u.tcp_ip6_spec;
3105 v6_m_spec = &fs->m_u.tcp_ip6_spec;
3106 if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr))) {
3107 memcpy(&match->key.ipv6.src, v6_spec->ip6src,
3108 sizeof(match->key.ipv6.src));
3109 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src,
3110 sizeof(match->mask.ipv6.src));
3111 }
3112 if (memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) {
3113 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst,
3114 sizeof(match->key.ipv6.dst));
3115 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst,
3116 sizeof(match->mask.ipv6.dst));
3117 }
3118 if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr)) ||
3119 memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) {
3120 match->dissector.used_keys |=
3121 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS);
3122 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] =
3123 offsetof(struct ethtool_rx_flow_key, ipv6);
3124 }
3125 if (v6_m_spec->psrc) {
3126 match->key.tp.src = v6_spec->psrc;
3127 match->mask.tp.src = v6_m_spec->psrc;
3128 }
3129 if (v6_m_spec->pdst) {
3130 match->key.tp.dst = v6_spec->pdst;
3131 match->mask.tp.dst = v6_m_spec->pdst;
3132 }
3133 if (v6_m_spec->psrc ||
3134 v6_m_spec->pdst) {
3135 match->dissector.used_keys |=
3136 BIT(FLOW_DISSECTOR_KEY_PORTS);
3137 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] =
3138 offsetof(struct ethtool_rx_flow_key, tp);
3139 }
3140 if (v6_m_spec->tclass) {
3141 match->key.ip.tos = v6_spec->tclass;
3142 match->mask.ip.tos = v6_m_spec->tclass;
3143 match->dissector.used_keys |=
3144 BIT(FLOW_DISSECTOR_KEY_IP);
3145 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] =
3146 offsetof(struct ethtool_rx_flow_key, ip);
3147 }
3148 }
3149 break;
3150 default:
3151 ethtool_rx_flow_rule_destroy(flow);
3152 return ERR_PTR(-EINVAL);
3153 }
3154
3155 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) {
3156 case TCP_V4_FLOW:
3157 case TCP_V6_FLOW:
3158 match->key.basic.ip_proto = IPPROTO_TCP;
3159 match->mask.basic.ip_proto = 0xff;
3160 break;
3161 case UDP_V4_FLOW:
3162 case UDP_V6_FLOW:
3163 match->key.basic.ip_proto = IPPROTO_UDP;
3164 match->mask.basic.ip_proto = 0xff;
3165 break;
3166 }
3167
3168 match->dissector.used_keys |= BIT(FLOW_DISSECTOR_KEY_BASIC);
3169 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] =
3170 offsetof(struct ethtool_rx_flow_key, basic);
3171
3172 if (fs->flow_type & FLOW_EXT) {
3173 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext;
3174 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext;
3175
3176 if (ext_m_spec->vlan_etype) {
3177 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype;
3178 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype;
3179 }
3180
3181 if (ext_m_spec->vlan_tci) {
3182 match->key.vlan.vlan_id =
3183 ntohs(ext_h_spec->vlan_tci) & 0x0fff;
3184 match->mask.vlan.vlan_id =
3185 ntohs(ext_m_spec->vlan_tci) & 0x0fff;
3186
3187 match->key.vlan.vlan_dei =
3188 !!(ext_h_spec->vlan_tci & htons(0x1000));
3189 match->mask.vlan.vlan_dei =
3190 !!(ext_m_spec->vlan_tci & htons(0x1000));
3191
3192 match->key.vlan.vlan_priority =
3193 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13;
3194 match->mask.vlan.vlan_priority =
3195 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13;
3196 }
3197
3198 if (ext_m_spec->vlan_etype ||
3199 ext_m_spec->vlan_tci) {
3200 match->dissector.used_keys |=
3201 BIT(FLOW_DISSECTOR_KEY_VLAN);
3202 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] =
3203 offsetof(struct ethtool_rx_flow_key, vlan);
3204 }
3205 }
3206 if (fs->flow_type & FLOW_MAC_EXT) {
3207 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext;
3208 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext;
3209
3210 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest,
3211 ETH_ALEN);
3212 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest,
3213 ETH_ALEN);
3214
3215 match->dissector.used_keys |=
3216 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS);
3217 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] =
3218 offsetof(struct ethtool_rx_flow_key, eth_addrs);
3219 }
3220
3221 act = &flow->rule->action.entries[0];
3222 switch (fs->ring_cookie) {
3223 case RX_CLS_FLOW_DISC:
3224 act->id = FLOW_ACTION_DROP;
3225 break;
3226 case RX_CLS_FLOW_WAKE:
3227 act->id = FLOW_ACTION_WAKE;
3228 break;
3229 default:
3230 act->id = FLOW_ACTION_QUEUE;
3231 if (fs->flow_type & FLOW_RSS)
3232 act->queue.ctx = input->rss_ctx;
3233
3234 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie);
3235 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie);
3236 break;
3237 }
3238
3239 return flow;
3240}
3241EXPORT_SYMBOL(ethtool_rx_flow_rule_create);
3242
3243void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow)
3244{
3245 kfree(flow->rule);
3246 kfree(flow);
3247}
3248EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy);