2 * net/core/ethtool.c - Ethtool ioctl handler
3 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx>
5 * This file is where we call all the ethtool_ops commands to get
6 * the information ethtool needs.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
14 #include <linux/module.h>
15 #include <linux/types.h>
16 #include <linux/capability.h>
17 #include <linux/errno.h>
18 #include <linux/ethtool.h>
19 #include <linux/netdevice.h>
20 #include <linux/net_tstamp.h>
21 #include <linux/phy.h>
22 #include <linux/bitops.h>
23 #include <linux/uaccess.h>
24 #include <linux/vmalloc.h>
25 #include <linux/slab.h>
26 #include <linux/rtnetlink.h>
27 #include <linux/sched.h>
28 #include <linux/net.h>
31 * Some useful ethtool_ops methods that're device independent.
32 * If we find that all drivers want to do the same thing here,
33 * we can turn these into dev_() function calls.
36 u32 ethtool_op_get_link(struct net_device *dev)
38 return netif_carrier_ok(dev) ? 1 : 0;
40 EXPORT_SYMBOL(ethtool_op_get_link);
42 int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info)
44 info->so_timestamping =
45 SOF_TIMESTAMPING_TX_SOFTWARE |
46 SOF_TIMESTAMPING_RX_SOFTWARE |
47 SOF_TIMESTAMPING_SOFTWARE;
51 EXPORT_SYMBOL(ethtool_op_get_ts_info);
53 /* Handlers for each ethtool command */
55 #define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32)
57 static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = {
58 [NETIF_F_SG_BIT] = "tx-scatter-gather",
59 [NETIF_F_IP_CSUM_BIT] = "tx-checksum-ipv4",
60 [NETIF_F_HW_CSUM_BIT] = "tx-checksum-ip-generic",
61 [NETIF_F_IPV6_CSUM_BIT] = "tx-checksum-ipv6",
62 [NETIF_F_HIGHDMA_BIT] = "highdma",
63 [NETIF_F_FRAGLIST_BIT] = "tx-scatter-gather-fraglist",
64 [NETIF_F_HW_VLAN_CTAG_TX_BIT] = "tx-vlan-hw-insert",
66 [NETIF_F_HW_VLAN_CTAG_RX_BIT] = "rx-vlan-hw-parse",
67 [NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-filter",
68 [NETIF_F_HW_VLAN_STAG_TX_BIT] = "tx-vlan-stag-hw-insert",
69 [NETIF_F_HW_VLAN_STAG_RX_BIT] = "rx-vlan-stag-hw-parse",
70 [NETIF_F_HW_VLAN_STAG_FILTER_BIT] = "rx-vlan-stag-filter",
71 [NETIF_F_VLAN_CHALLENGED_BIT] = "vlan-challenged",
72 [NETIF_F_GSO_BIT] = "tx-generic-segmentation",
73 [NETIF_F_LLTX_BIT] = "tx-lockless",
74 [NETIF_F_NETNS_LOCAL_BIT] = "netns-local",
75 [NETIF_F_GRO_BIT] = "rx-gro",
76 [NETIF_F_LRO_BIT] = "rx-lro",
78 [NETIF_F_TSO_BIT] = "tx-tcp-segmentation",
79 [NETIF_F_UFO_BIT] = "tx-udp-fragmentation",
80 [NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust",
81 [NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation",
82 [NETIF_F_TSO_MANGLEID_BIT] = "tx-tcp-mangleid-segmentation",
83 [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation",
84 [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation",
85 [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation",
86 [NETIF_F_GSO_GRE_CSUM_BIT] = "tx-gre-csum-segmentation",
87 [NETIF_F_GSO_IPXIP4_BIT] = "tx-ipxip4-segmentation",
88 [NETIF_F_GSO_IPXIP6_BIT] = "tx-ipxip6-segmentation",
89 [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation",
90 [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation",
91 [NETIF_F_GSO_PARTIAL_BIT] = "tx-gso-partial",
92 [NETIF_F_GSO_SCTP_BIT] = "tx-sctp-segmentation",
94 [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc",
95 [NETIF_F_SCTP_CRC_BIT] = "tx-checksum-sctp",
96 [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu",
97 [NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter",
98 [NETIF_F_RXHASH_BIT] = "rx-hashing",
99 [NETIF_F_RXCSUM_BIT] = "rx-checksum",
100 [NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy",
101 [NETIF_F_LOOPBACK_BIT] = "loopback",
102 [NETIF_F_RXFCS_BIT] = "rx-fcs",
103 [NETIF_F_RXALL_BIT] = "rx-all",
104 [NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload",
105 [NETIF_F_BUSY_POLL_BIT] = "busy-poll",
106 [NETIF_F_HW_TC_BIT] = "hw-tc-offload",
110 rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = {
111 [ETH_RSS_HASH_TOP_BIT] = "toeplitz",
112 [ETH_RSS_HASH_XOR_BIT] = "xor",
116 tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
117 [ETHTOOL_ID_UNSPEC] = "Unspec",
118 [ETHTOOL_RX_COPYBREAK] = "rx-copybreak",
119 [ETHTOOL_TX_COPYBREAK] = "tx-copybreak",
123 phy_tunable_strings[__ETHTOOL_PHY_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
124 [ETHTOOL_ID_UNSPEC] = "Unspec",
125 [ETHTOOL_PHY_DOWNSHIFT] = "phy-downshift",
128 static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
130 struct ethtool_gfeatures cmd = {
131 .cmd = ETHTOOL_GFEATURES,
132 .size = ETHTOOL_DEV_FEATURE_WORDS,
134 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
135 u32 __user *sizeaddr;
139 /* in case feature bits run out again */
140 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t));
142 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
143 features[i].available = (u32)(dev->hw_features >> (32 * i));
144 features[i].requested = (u32)(dev->wanted_features >> (32 * i));
145 features[i].active = (u32)(dev->features >> (32 * i));
146 features[i].never_changed =
147 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i));
150 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
151 if (get_user(copy_size, sizeaddr))
154 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
155 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
157 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
159 useraddr += sizeof(cmd);
160 if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
166 static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
168 struct ethtool_sfeatures cmd;
169 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
170 netdev_features_t wanted = 0, valid = 0;
173 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
175 useraddr += sizeof(cmd);
177 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
180 if (copy_from_user(features, useraddr, sizeof(features)))
183 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
184 valid |= (netdev_features_t)features[i].valid << (32 * i);
185 wanted |= (netdev_features_t)features[i].requested << (32 * i);
188 if (valid & ~NETIF_F_ETHTOOL_BITS)
191 if (valid & ~dev->hw_features) {
192 valid &= dev->hw_features;
193 ret |= ETHTOOL_F_UNSUPPORTED;
196 dev->wanted_features &= ~valid;
197 dev->wanted_features |= wanted & valid;
198 __netdev_update_features(dev);
200 if ((dev->wanted_features ^ dev->features) & valid)
201 ret |= ETHTOOL_F_WISH;
206 static int phy_get_sset_count(struct phy_device *phydev)
210 if (phydev->drv->get_sset_count &&
211 phydev->drv->get_strings &&
212 phydev->drv->get_stats) {
213 mutex_lock(&phydev->lock);
214 ret = phydev->drv->get_sset_count(phydev);
215 mutex_unlock(&phydev->lock);
223 static int __ethtool_get_sset_count(struct net_device *dev, int sset)
225 const struct ethtool_ops *ops = dev->ethtool_ops;
227 if (sset == ETH_SS_FEATURES)
228 return ARRAY_SIZE(netdev_features_strings);
230 if (sset == ETH_SS_RSS_HASH_FUNCS)
231 return ARRAY_SIZE(rss_hash_func_strings);
233 if (sset == ETH_SS_TUNABLES)
234 return ARRAY_SIZE(tunable_strings);
236 if (sset == ETH_SS_PHY_TUNABLES)
237 return ARRAY_SIZE(phy_tunable_strings);
239 if (sset == ETH_SS_PHY_STATS) {
241 return phy_get_sset_count(dev->phydev);
246 if (ops->get_sset_count && ops->get_strings)
247 return ops->get_sset_count(dev, sset);
252 static void __ethtool_get_strings(struct net_device *dev,
253 u32 stringset, u8 *data)
255 const struct ethtool_ops *ops = dev->ethtool_ops;
257 if (stringset == ETH_SS_FEATURES)
258 memcpy(data, netdev_features_strings,
259 sizeof(netdev_features_strings));
260 else if (stringset == ETH_SS_RSS_HASH_FUNCS)
261 memcpy(data, rss_hash_func_strings,
262 sizeof(rss_hash_func_strings));
263 else if (stringset == ETH_SS_TUNABLES)
264 memcpy(data, tunable_strings, sizeof(tunable_strings));
265 else if (stringset == ETH_SS_PHY_TUNABLES)
266 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings));
267 else if (stringset == ETH_SS_PHY_STATS) {
268 struct phy_device *phydev = dev->phydev;
271 mutex_lock(&phydev->lock);
272 phydev->drv->get_strings(phydev, data);
273 mutex_unlock(&phydev->lock);
278 /* ops->get_strings is valid because checked earlier */
279 ops->get_strings(dev, stringset, data);
282 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd)
284 /* feature masks of legacy discrete ethtool ops */
287 case ETHTOOL_GTXCSUM:
288 case ETHTOOL_STXCSUM:
289 return NETIF_F_CSUM_MASK | NETIF_F_SCTP_CRC;
290 case ETHTOOL_GRXCSUM:
291 case ETHTOOL_SRXCSUM:
292 return NETIF_F_RXCSUM;
298 return NETIF_F_ALL_TSO;
313 static int ethtool_get_one_feature(struct net_device *dev,
314 char __user *useraddr, u32 ethcmd)
316 netdev_features_t mask = ethtool_get_feature_mask(ethcmd);
317 struct ethtool_value edata = {
319 .data = !!(dev->features & mask),
322 if (copy_to_user(useraddr, &edata, sizeof(edata)))
327 static int ethtool_set_one_feature(struct net_device *dev,
328 void __user *useraddr, u32 ethcmd)
330 struct ethtool_value edata;
331 netdev_features_t mask;
333 if (copy_from_user(&edata, useraddr, sizeof(edata)))
336 mask = ethtool_get_feature_mask(ethcmd);
337 mask &= dev->hw_features;
342 dev->wanted_features |= mask;
344 dev->wanted_features &= ~mask;
346 __netdev_update_features(dev);
351 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
352 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
353 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
354 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
357 static u32 __ethtool_get_flags(struct net_device *dev)
361 if (dev->features & NETIF_F_LRO)
362 flags |= ETH_FLAG_LRO;
363 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
364 flags |= ETH_FLAG_RXVLAN;
365 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX)
366 flags |= ETH_FLAG_TXVLAN;
367 if (dev->features & NETIF_F_NTUPLE)
368 flags |= ETH_FLAG_NTUPLE;
369 if (dev->features & NETIF_F_RXHASH)
370 flags |= ETH_FLAG_RXHASH;
375 static int __ethtool_set_flags(struct net_device *dev, u32 data)
377 netdev_features_t features = 0, changed;
379 if (data & ~ETH_ALL_FLAGS)
382 if (data & ETH_FLAG_LRO)
383 features |= NETIF_F_LRO;
384 if (data & ETH_FLAG_RXVLAN)
385 features |= NETIF_F_HW_VLAN_CTAG_RX;
386 if (data & ETH_FLAG_TXVLAN)
387 features |= NETIF_F_HW_VLAN_CTAG_TX;
388 if (data & ETH_FLAG_NTUPLE)
389 features |= NETIF_F_NTUPLE;
390 if (data & ETH_FLAG_RXHASH)
391 features |= NETIF_F_RXHASH;
393 /* allow changing only bits set in hw_features */
394 changed = (features ^ dev->features) & ETH_ALL_FEATURES;
395 if (changed & ~dev->hw_features)
396 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
398 dev->wanted_features =
399 (dev->wanted_features & ~changed) | (features & changed);
401 __netdev_update_features(dev);
406 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
409 bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS);
412 EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode);
414 /* return false if src had higher bits set. lower bits always updated. */
415 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
416 const unsigned long *src)
420 /* TODO: following test will soon always be true */
421 if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) {
422 __ETHTOOL_DECLARE_LINK_MODE_MASK(ext);
424 bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
425 bitmap_fill(ext, 32);
426 bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
427 if (bitmap_intersects(ext, src,
428 __ETHTOOL_LINK_MODE_MASK_NBITS)) {
429 /* src mask goes beyond bit 31 */
433 *legacy_u32 = src[0];
436 EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32);
438 /* return false if legacy contained non-0 deprecated fields
439 * transceiver/maxtxpkt/maxrxpkt. rest of ksettings always updated
442 convert_legacy_settings_to_link_ksettings(
443 struct ethtool_link_ksettings *link_ksettings,
444 const struct ethtool_cmd *legacy_settings)
448 memset(link_ksettings, 0, sizeof(*link_ksettings));
450 /* This is used to tell users that driver is still using these
451 * deprecated legacy fields, and they should not use
452 * %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS
454 if (legacy_settings->transceiver ||
455 legacy_settings->maxtxpkt ||
456 legacy_settings->maxrxpkt)
459 ethtool_convert_legacy_u32_to_link_mode(
460 link_ksettings->link_modes.supported,
461 legacy_settings->supported);
462 ethtool_convert_legacy_u32_to_link_mode(
463 link_ksettings->link_modes.advertising,
464 legacy_settings->advertising);
465 ethtool_convert_legacy_u32_to_link_mode(
466 link_ksettings->link_modes.lp_advertising,
467 legacy_settings->lp_advertising);
468 link_ksettings->base.speed
469 = ethtool_cmd_speed(legacy_settings);
470 link_ksettings->base.duplex
471 = legacy_settings->duplex;
472 link_ksettings->base.port
473 = legacy_settings->port;
474 link_ksettings->base.phy_address
475 = legacy_settings->phy_address;
476 link_ksettings->base.autoneg
477 = legacy_settings->autoneg;
478 link_ksettings->base.mdio_support
479 = legacy_settings->mdio_support;
480 link_ksettings->base.eth_tp_mdix
481 = legacy_settings->eth_tp_mdix;
482 link_ksettings->base.eth_tp_mdix_ctrl
483 = legacy_settings->eth_tp_mdix_ctrl;
487 /* return false if ksettings link modes had higher bits
488 * set. legacy_settings always updated (best effort)
491 convert_link_ksettings_to_legacy_settings(
492 struct ethtool_cmd *legacy_settings,
493 const struct ethtool_link_ksettings *link_ksettings)
497 memset(legacy_settings, 0, sizeof(*legacy_settings));
498 /* this also clears the deprecated fields in legacy structure:
504 retval &= ethtool_convert_link_mode_to_legacy_u32(
505 &legacy_settings->supported,
506 link_ksettings->link_modes.supported);
507 retval &= ethtool_convert_link_mode_to_legacy_u32(
508 &legacy_settings->advertising,
509 link_ksettings->link_modes.advertising);
510 retval &= ethtool_convert_link_mode_to_legacy_u32(
511 &legacy_settings->lp_advertising,
512 link_ksettings->link_modes.lp_advertising);
513 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed);
514 legacy_settings->duplex
515 = link_ksettings->base.duplex;
516 legacy_settings->port
517 = link_ksettings->base.port;
518 legacy_settings->phy_address
519 = link_ksettings->base.phy_address;
520 legacy_settings->autoneg
521 = link_ksettings->base.autoneg;
522 legacy_settings->mdio_support
523 = link_ksettings->base.mdio_support;
524 legacy_settings->eth_tp_mdix
525 = link_ksettings->base.eth_tp_mdix;
526 legacy_settings->eth_tp_mdix_ctrl
527 = link_ksettings->base.eth_tp_mdix_ctrl;
531 /* number of 32-bit words to store the user's link mode bitmaps */
532 #define __ETHTOOL_LINK_MODE_MASK_NU32 \
533 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
535 /* layout of the struct passed from/to userland */
536 struct ethtool_link_usettings {
537 struct ethtool_link_settings base;
539 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32];
540 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
541 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
545 /* Internal kernel helper to query a device ethtool_link_settings.
547 * Backward compatibility note: for compatibility with legacy drivers
548 * that implement only the ethtool_cmd API, this has to work with both
549 * drivers implementing get_link_ksettings API and drivers
550 * implementing get_settings API. When drivers implement get_settings
551 * and report ethtool_cmd deprecated fields
552 * (transceiver/maxrxpkt/maxtxpkt), these fields are silently ignored
553 * because the resulting struct ethtool_link_settings does not report them.
555 int __ethtool_get_link_ksettings(struct net_device *dev,
556 struct ethtool_link_ksettings *link_ksettings)
559 struct ethtool_cmd cmd;
563 if (dev->ethtool_ops->get_link_ksettings) {
564 memset(link_ksettings, 0, sizeof(*link_ksettings));
565 return dev->ethtool_ops->get_link_ksettings(dev,
569 /* driver doesn't support %ethtool_link_ksettings API. revert to
570 * legacy %ethtool_cmd API, unless it's not supported either.
571 * TODO: remove when ethtool_ops::get_settings disappears internally
573 if (!dev->ethtool_ops->get_settings)
576 memset(&cmd, 0, sizeof(cmd));
577 cmd.cmd = ETHTOOL_GSET;
578 err = dev->ethtool_ops->get_settings(dev, &cmd);
582 /* we ignore deprecated fields transceiver/maxrxpkt/maxtxpkt
584 convert_legacy_settings_to_link_ksettings(link_ksettings, &cmd);
587 EXPORT_SYMBOL(__ethtool_get_link_ksettings);
589 /* convert ethtool_link_usettings in user space to a kernel internal
590 * ethtool_link_ksettings. return 0 on success, errno on error.
592 static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to,
593 const void __user *from)
595 struct ethtool_link_usettings link_usettings;
597 if (copy_from_user(&link_usettings, from, sizeof(link_usettings)))
600 memcpy(&to->base, &link_usettings.base, sizeof(to->base));
601 bitmap_from_u32array(to->link_modes.supported,
602 __ETHTOOL_LINK_MODE_MASK_NBITS,
603 link_usettings.link_modes.supported,
604 __ETHTOOL_LINK_MODE_MASK_NU32);
605 bitmap_from_u32array(to->link_modes.advertising,
606 __ETHTOOL_LINK_MODE_MASK_NBITS,
607 link_usettings.link_modes.advertising,
608 __ETHTOOL_LINK_MODE_MASK_NU32);
609 bitmap_from_u32array(to->link_modes.lp_advertising,
610 __ETHTOOL_LINK_MODE_MASK_NBITS,
611 link_usettings.link_modes.lp_advertising,
612 __ETHTOOL_LINK_MODE_MASK_NU32);
617 /* convert a kernel internal ethtool_link_ksettings to
618 * ethtool_link_usettings in user space. return 0 on success, errno on
622 store_link_ksettings_for_user(void __user *to,
623 const struct ethtool_link_ksettings *from)
625 struct ethtool_link_usettings link_usettings;
627 memcpy(&link_usettings.base, &from->base, sizeof(link_usettings));
628 bitmap_to_u32array(link_usettings.link_modes.supported,
629 __ETHTOOL_LINK_MODE_MASK_NU32,
630 from->link_modes.supported,
631 __ETHTOOL_LINK_MODE_MASK_NBITS);
632 bitmap_to_u32array(link_usettings.link_modes.advertising,
633 __ETHTOOL_LINK_MODE_MASK_NU32,
634 from->link_modes.advertising,
635 __ETHTOOL_LINK_MODE_MASK_NBITS);
636 bitmap_to_u32array(link_usettings.link_modes.lp_advertising,
637 __ETHTOOL_LINK_MODE_MASK_NU32,
638 from->link_modes.lp_advertising,
639 __ETHTOOL_LINK_MODE_MASK_NBITS);
641 if (copy_to_user(to, &link_usettings, sizeof(link_usettings)))
647 /* Query device for its ethtool_link_settings.
649 * Backward compatibility note: this function must fail when driver
650 * does not implement ethtool::get_link_ksettings, even if legacy
651 * ethtool_ops::get_settings is implemented. This tells new versions
652 * of ethtool that they should use the legacy API %ETHTOOL_GSET for
653 * this driver, so that they can correctly access the ethtool_cmd
654 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
655 * implements ethtool_ops::get_settings anymore.
657 static int ethtool_get_link_ksettings(struct net_device *dev,
658 void __user *useraddr)
661 struct ethtool_link_ksettings link_ksettings;
665 if (!dev->ethtool_ops->get_link_ksettings)
668 /* handle bitmap nbits handshake */
669 if (copy_from_user(&link_ksettings.base, useraddr,
670 sizeof(link_ksettings.base)))
673 if (__ETHTOOL_LINK_MODE_MASK_NU32
674 != link_ksettings.base.link_mode_masks_nwords) {
675 /* wrong link mode nbits requested */
676 memset(&link_ksettings, 0, sizeof(link_ksettings));
677 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
678 /* send back number of words required as negative val */
679 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX,
680 "need too many bits for link modes!");
681 link_ksettings.base.link_mode_masks_nwords
682 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32);
684 /* copy the base fields back to user, not the link
687 if (copy_to_user(useraddr, &link_ksettings.base,
688 sizeof(link_ksettings.base)))
694 /* handshake successful: user/kernel agree on
695 * link_mode_masks_nwords
698 memset(&link_ksettings, 0, sizeof(link_ksettings));
699 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
703 /* make sure we tell the right values to user */
704 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
705 link_ksettings.base.link_mode_masks_nwords
706 = __ETHTOOL_LINK_MODE_MASK_NU32;
708 return store_link_ksettings_for_user(useraddr, &link_ksettings);
711 /* Update device ethtool_link_settings.
713 * Backward compatibility note: this function must fail when driver
714 * does not implement ethtool::set_link_ksettings, even if legacy
715 * ethtool_ops::set_settings is implemented. This tells new versions
716 * of ethtool that they should use the legacy API %ETHTOOL_SSET for
717 * this driver, so that they can correctly update the ethtool_cmd
718 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
719 * implements ethtool_ops::get_settings anymore.
721 static int ethtool_set_link_ksettings(struct net_device *dev,
722 void __user *useraddr)
725 struct ethtool_link_ksettings link_ksettings;
729 if (!dev->ethtool_ops->set_link_ksettings)
732 /* make sure nbits field has expected value */
733 if (copy_from_user(&link_ksettings.base, useraddr,
734 sizeof(link_ksettings.base)))
737 if (__ETHTOOL_LINK_MODE_MASK_NU32
738 != link_ksettings.base.link_mode_masks_nwords)
741 /* copy the whole structure, now that we know it has expected
744 err = load_link_ksettings_from_user(&link_ksettings, useraddr);
748 /* re-check nwords field, just in case */
749 if (__ETHTOOL_LINK_MODE_MASK_NU32
750 != link_ksettings.base.link_mode_masks_nwords)
753 return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
757 warn_incomplete_ethtool_legacy_settings_conversion(const char *details)
759 char name[sizeof(current->comm)];
761 pr_info_once("warning: `%s' uses legacy ethtool link settings API, %s\n",
762 get_task_comm(name, current), details);
765 /* Query device for its ethtool_cmd settings.
767 * Backward compatibility note: for compatibility with legacy ethtool,
768 * this has to work with both drivers implementing get_link_ksettings
769 * API and drivers implementing get_settings API. When drivers
770 * implement get_link_ksettings and report higher link mode bits, a
771 * kernel warning is logged once (with name of 1st driver/device) to
772 * recommend user to upgrade ethtool, but the command is successful
773 * (only the lower link mode bits reported back to user).
775 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
777 struct ethtool_cmd cmd;
781 if (dev->ethtool_ops->get_link_ksettings) {
782 /* First, use link_ksettings API if it is supported */
784 struct ethtool_link_ksettings link_ksettings;
786 memset(&link_ksettings, 0, sizeof(link_ksettings));
787 err = dev->ethtool_ops->get_link_ksettings(dev,
791 if (!convert_link_ksettings_to_legacy_settings(&cmd,
793 warn_incomplete_ethtool_legacy_settings_conversion(
794 "link modes are only partially reported");
796 /* send a sensible cmd tag back to user */
797 cmd.cmd = ETHTOOL_GSET;
799 /* driver doesn't support %ethtool_link_ksettings
800 * API. revert to legacy %ethtool_cmd API, unless it's
801 * not supported either.
805 if (!dev->ethtool_ops->get_settings)
808 memset(&cmd, 0, sizeof(cmd));
809 cmd.cmd = ETHTOOL_GSET;
810 err = dev->ethtool_ops->get_settings(dev, &cmd);
815 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
821 /* Update device link settings with given ethtool_cmd.
823 * Backward compatibility note: for compatibility with legacy ethtool,
824 * this has to work with both drivers implementing set_link_ksettings
825 * API and drivers implementing set_settings API. When drivers
826 * implement set_link_ksettings and user's request updates deprecated
827 * ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
828 * warning is logged once (with name of 1st driver/device) to
829 * recommend user to upgrade ethtool, and the request is rejected.
831 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
833 struct ethtool_cmd cmd;
837 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
840 /* first, try new %ethtool_link_ksettings API. */
841 if (dev->ethtool_ops->set_link_ksettings) {
842 struct ethtool_link_ksettings link_ksettings;
844 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings,
848 link_ksettings.base.cmd = ETHTOOL_SLINKSETTINGS;
849 link_ksettings.base.link_mode_masks_nwords
850 = __ETHTOOL_LINK_MODE_MASK_NU32;
851 return dev->ethtool_ops->set_link_ksettings(dev,
855 /* legacy %ethtool_cmd API */
857 /* TODO: return -EOPNOTSUPP when ethtool_ops::get_settings
858 * disappears internally
861 if (!dev->ethtool_ops->set_settings)
864 return dev->ethtool_ops->set_settings(dev, &cmd);
867 static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
868 void __user *useraddr)
870 struct ethtool_drvinfo info;
871 const struct ethtool_ops *ops = dev->ethtool_ops;
873 memset(&info, 0, sizeof(info));
874 info.cmd = ETHTOOL_GDRVINFO;
875 if (ops->get_drvinfo) {
876 ops->get_drvinfo(dev, &info);
877 } else if (dev->dev.parent && dev->dev.parent->driver) {
878 strlcpy(info.bus_info, dev_name(dev->dev.parent),
879 sizeof(info.bus_info));
880 strlcpy(info.driver, dev->dev.parent->driver->name,
881 sizeof(info.driver));
887 * this method of obtaining string set info is deprecated;
888 * Use ETHTOOL_GSSET_INFO instead.
890 if (ops->get_sset_count) {
893 rc = ops->get_sset_count(dev, ETH_SS_TEST);
895 info.testinfo_len = rc;
896 rc = ops->get_sset_count(dev, ETH_SS_STATS);
899 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
901 info.n_priv_flags = rc;
903 if (ops->get_regs_len)
904 info.regdump_len = ops->get_regs_len(dev);
905 if (ops->get_eeprom_len)
906 info.eedump_len = ops->get_eeprom_len(dev);
908 if (copy_to_user(useraddr, &info, sizeof(info)))
913 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
914 void __user *useraddr)
916 struct ethtool_sset_info info;
918 int i, idx = 0, n_bits = 0, ret, rc;
919 u32 *info_buf = NULL;
921 if (copy_from_user(&info, useraddr, sizeof(info)))
924 /* store copy of mask, because we zero struct later on */
925 sset_mask = info.sset_mask;
929 /* calculate size of return buffer */
930 n_bits = hweight64(sset_mask);
932 memset(&info, 0, sizeof(info));
933 info.cmd = ETHTOOL_GSSET_INFO;
935 info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
940 * fill return buffer based on input bitmask and successful
941 * get_sset_count return
943 for (i = 0; i < 64; i++) {
944 if (!(sset_mask & (1ULL << i)))
947 rc = __ethtool_get_sset_count(dev, i);
949 info.sset_mask |= (1ULL << i);
950 info_buf[idx++] = rc;
955 if (copy_to_user(useraddr, &info, sizeof(info)))
958 useraddr += offsetof(struct ethtool_sset_info, data);
959 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
969 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
970 u32 cmd, void __user *useraddr)
972 struct ethtool_rxnfc info;
973 size_t info_size = sizeof(info);
976 if (!dev->ethtool_ops->set_rxnfc)
979 /* struct ethtool_rxnfc was originally defined for
980 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
981 * members. User-space might still be using that
983 if (cmd == ETHTOOL_SRXFH)
984 info_size = (offsetof(struct ethtool_rxnfc, data) +
987 if (copy_from_user(&info, useraddr, info_size))
990 rc = dev->ethtool_ops->set_rxnfc(dev, &info);
994 if (cmd == ETHTOOL_SRXCLSRLINS &&
995 copy_to_user(useraddr, &info, info_size))
1001 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
1002 u32 cmd, void __user *useraddr)
1004 struct ethtool_rxnfc info;
1005 size_t info_size = sizeof(info);
1006 const struct ethtool_ops *ops = dev->ethtool_ops;
1008 void *rule_buf = NULL;
1010 if (!ops->get_rxnfc)
1013 /* struct ethtool_rxnfc was originally defined for
1014 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
1015 * members. User-space might still be using that
1017 if (cmd == ETHTOOL_GRXFH)
1018 info_size = (offsetof(struct ethtool_rxnfc, data) +
1021 if (copy_from_user(&info, useraddr, info_size))
1024 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
1025 if (info.rule_cnt > 0) {
1026 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
1027 rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
1034 ret = ops->get_rxnfc(dev, &info, rule_buf);
1039 if (copy_to_user(useraddr, &info, info_size))
1043 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
1044 if (copy_to_user(useraddr, rule_buf,
1045 info.rule_cnt * sizeof(u32)))
1056 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr,
1057 struct ethtool_rxnfc *rx_rings,
1062 if (copy_from_user(indir, useraddr, size * sizeof(indir[0])))
1065 /* Validate ring indices */
1066 for (i = 0; i < size; i++)
1067 if (indir[i] >= rx_rings->data)
1073 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly;
1075 void netdev_rss_key_fill(void *buffer, size_t len)
1077 BUG_ON(len > sizeof(netdev_rss_key));
1078 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key));
1079 memcpy(buffer, netdev_rss_key, len);
1081 EXPORT_SYMBOL(netdev_rss_key_fill);
1083 static int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max)
1085 u32 dev_size, current_max = 0;
1089 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1090 !dev->ethtool_ops->get_rxfh)
1092 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1096 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1100 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1105 current_max = max(current_max, indir[dev_size]);
1114 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
1115 void __user *useraddr)
1117 u32 user_size, dev_size;
1121 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1122 !dev->ethtool_ops->get_rxfh)
1124 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1128 if (copy_from_user(&user_size,
1129 useraddr + offsetof(struct ethtool_rxfh_indir, size),
1133 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
1134 &dev_size, sizeof(dev_size)))
1137 /* If the user buffer size is 0, this is just a query for the
1138 * device table size. Otherwise, if it's smaller than the
1139 * device table size it's an error.
1141 if (user_size < dev_size)
1142 return user_size == 0 ? 0 : -EINVAL;
1144 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1148 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1152 if (copy_to_user(useraddr +
1153 offsetof(struct ethtool_rxfh_indir, ring_index[0]),
1154 indir, dev_size * sizeof(indir[0])))
1162 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
1163 void __user *useraddr)
1165 struct ethtool_rxnfc rx_rings;
1166 u32 user_size, dev_size, i;
1168 const struct ethtool_ops *ops = dev->ethtool_ops;
1170 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]);
1172 if (!ops->get_rxfh_indir_size || !ops->set_rxfh ||
1176 dev_size = ops->get_rxfh_indir_size(dev);
1180 if (copy_from_user(&user_size,
1181 useraddr + offsetof(struct ethtool_rxfh_indir, size),
1185 if (user_size != 0 && user_size != dev_size)
1188 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1192 rx_rings.cmd = ETHTOOL_GRXRINGS;
1193 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1197 if (user_size == 0) {
1198 for (i = 0; i < dev_size; i++)
1199 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1201 ret = ethtool_copy_validate_indir(indir,
1202 useraddr + ringidx_offset,
1209 ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE);
1213 /* indicate whether rxfh was set to default */
1215 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1217 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1224 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
1225 void __user *useraddr)
1228 const struct ethtool_ops *ops = dev->ethtool_ops;
1229 u32 user_indir_size, user_key_size;
1230 u32 dev_indir_size = 0, dev_key_size = 0;
1231 struct ethtool_rxfh rxfh;
1242 if (ops->get_rxfh_indir_size)
1243 dev_indir_size = ops->get_rxfh_indir_size(dev);
1244 if (ops->get_rxfh_key_size)
1245 dev_key_size = ops->get_rxfh_key_size(dev);
1247 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
1249 user_indir_size = rxfh.indir_size;
1250 user_key_size = rxfh.key_size;
1252 /* Check that reserved fields are 0 for now */
1253 if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] ||
1254 rxfh.rsvd8[2] || rxfh.rsvd32)
1257 rxfh.indir_size = dev_indir_size;
1258 rxfh.key_size = dev_key_size;
1259 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh)))
1262 if ((user_indir_size && (user_indir_size != dev_indir_size)) ||
1263 (user_key_size && (user_key_size != dev_key_size)))
1266 indir_bytes = user_indir_size * sizeof(indir[0]);
1267 total_size = indir_bytes + user_key_size;
1268 rss_config = kzalloc(total_size, GFP_USER);
1272 if (user_indir_size)
1273 indir = (u32 *)rss_config;
1276 hkey = rss_config + indir_bytes;
1278 ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc);
1282 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc),
1283 &dev_hfunc, sizeof(rxfh.hfunc))) {
1285 } else if (copy_to_user(useraddr +
1286 offsetof(struct ethtool_rxfh, rss_config[0]),
1287 rss_config, total_size)) {
1296 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
1297 void __user *useraddr)
1300 const struct ethtool_ops *ops = dev->ethtool_ops;
1301 struct ethtool_rxnfc rx_rings;
1302 struct ethtool_rxfh rxfh;
1303 u32 dev_indir_size = 0, dev_key_size = 0, i;
1304 u32 *indir = NULL, indir_bytes = 0;
1307 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]);
1309 if (!ops->get_rxnfc || !ops->set_rxfh)
1312 if (ops->get_rxfh_indir_size)
1313 dev_indir_size = ops->get_rxfh_indir_size(dev);
1314 if (ops->get_rxfh_key_size)
1315 dev_key_size = ops->get_rxfh_key_size(dev);
1317 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
1320 /* Check that reserved fields are 0 for now */
1321 if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] ||
1322 rxfh.rsvd8[2] || rxfh.rsvd32)
1325 /* If either indir, hash key or function is valid, proceed further.
1326 * Must request at least one change: indir size, hash key or function.
1328 if ((rxfh.indir_size &&
1329 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE &&
1330 rxfh.indir_size != dev_indir_size) ||
1331 (rxfh.key_size && (rxfh.key_size != dev_key_size)) ||
1332 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE &&
1333 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE))
1336 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1337 indir_bytes = dev_indir_size * sizeof(indir[0]);
1339 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER);
1343 rx_rings.cmd = ETHTOOL_GRXRINGS;
1344 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1348 /* rxfh.indir_size == 0 means reset the indir table to default.
1349 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
1351 if (rxfh.indir_size &&
1352 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) {
1353 indir = (u32 *)rss_config;
1354 ret = ethtool_copy_validate_indir(indir,
1355 useraddr + rss_cfg_offset,
1360 } else if (rxfh.indir_size == 0) {
1361 indir = (u32 *)rss_config;
1362 for (i = 0; i < dev_indir_size; i++)
1363 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1366 if (rxfh.key_size) {
1367 hkey = rss_config + indir_bytes;
1368 if (copy_from_user(hkey,
1369 useraddr + rss_cfg_offset + indir_bytes,
1376 ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc);
1380 /* indicate whether rxfh was set to default */
1381 if (rxfh.indir_size == 0)
1382 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1383 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1384 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1391 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
1393 struct ethtool_regs regs;
1394 const struct ethtool_ops *ops = dev->ethtool_ops;
1398 if (!ops->get_regs || !ops->get_regs_len)
1401 if (copy_from_user(®s, useraddr, sizeof(regs)))
1404 reglen = ops->get_regs_len(dev);
1405 if (regs.len > reglen)
1408 regbuf = vzalloc(reglen);
1409 if (reglen && !regbuf)
1412 ops->get_regs(dev, ®s, regbuf);
1415 if (copy_to_user(useraddr, ®s, sizeof(regs)))
1417 useraddr += offsetof(struct ethtool_regs, data);
1418 if (regbuf && copy_to_user(useraddr, regbuf, regs.len))
1427 static int ethtool_reset(struct net_device *dev, char __user *useraddr)
1429 struct ethtool_value reset;
1432 if (!dev->ethtool_ops->reset)
1435 if (copy_from_user(&reset, useraddr, sizeof(reset)))
1438 ret = dev->ethtool_ops->reset(dev, &reset.data);
1442 if (copy_to_user(useraddr, &reset, sizeof(reset)))
1447 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
1449 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
1451 if (!dev->ethtool_ops->get_wol)
1454 dev->ethtool_ops->get_wol(dev, &wol);
1456 if (copy_to_user(useraddr, &wol, sizeof(wol)))
1461 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
1463 struct ethtool_wolinfo wol;
1465 if (!dev->ethtool_ops->set_wol)
1468 if (copy_from_user(&wol, useraddr, sizeof(wol)))
1471 return dev->ethtool_ops->set_wol(dev, &wol);
1474 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
1476 struct ethtool_eee edata;
1479 if (!dev->ethtool_ops->get_eee)
1482 memset(&edata, 0, sizeof(struct ethtool_eee));
1483 edata.cmd = ETHTOOL_GEEE;
1484 rc = dev->ethtool_ops->get_eee(dev, &edata);
1489 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1495 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
1497 struct ethtool_eee edata;
1499 if (!dev->ethtool_ops->set_eee)
1502 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1505 return dev->ethtool_ops->set_eee(dev, &edata);
1508 static int ethtool_nway_reset(struct net_device *dev)
1510 if (!dev->ethtool_ops->nway_reset)
1513 return dev->ethtool_ops->nway_reset(dev);
1516 static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
1518 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
1520 if (!dev->ethtool_ops->get_link)
1523 edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
1525 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1530 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
1531 int (*getter)(struct net_device *,
1532 struct ethtool_eeprom *, u8 *),
1535 struct ethtool_eeprom eeprom;
1536 void __user *userbuf = useraddr + sizeof(eeprom);
1537 u32 bytes_remaining;
1541 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1544 /* Check for wrap and zero */
1545 if (eeprom.offset + eeprom.len <= eeprom.offset)
1548 /* Check for exceeding total eeprom len */
1549 if (eeprom.offset + eeprom.len > total_len)
1552 data = kmalloc(PAGE_SIZE, GFP_USER);
1556 bytes_remaining = eeprom.len;
1557 while (bytes_remaining > 0) {
1558 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1560 ret = getter(dev, &eeprom, data);
1563 if (copy_to_user(userbuf, data, eeprom.len)) {
1567 userbuf += eeprom.len;
1568 eeprom.offset += eeprom.len;
1569 bytes_remaining -= eeprom.len;
1572 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
1573 eeprom.offset -= eeprom.len;
1574 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
1581 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
1583 const struct ethtool_ops *ops = dev->ethtool_ops;
1585 if (!ops->get_eeprom || !ops->get_eeprom_len ||
1586 !ops->get_eeprom_len(dev))
1589 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
1590 ops->get_eeprom_len(dev));
1593 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
1595 struct ethtool_eeprom eeprom;
1596 const struct ethtool_ops *ops = dev->ethtool_ops;
1597 void __user *userbuf = useraddr + sizeof(eeprom);
1598 u32 bytes_remaining;
1602 if (!ops->set_eeprom || !ops->get_eeprom_len ||
1603 !ops->get_eeprom_len(dev))
1606 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1609 /* Check for wrap and zero */
1610 if (eeprom.offset + eeprom.len <= eeprom.offset)
1613 /* Check for exceeding total eeprom len */
1614 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1617 data = kmalloc(PAGE_SIZE, GFP_USER);
1621 bytes_remaining = eeprom.len;
1622 while (bytes_remaining > 0) {
1623 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1625 if (copy_from_user(data, userbuf, eeprom.len)) {
1629 ret = ops->set_eeprom(dev, &eeprom, data);
1632 userbuf += eeprom.len;
1633 eeprom.offset += eeprom.len;
1634 bytes_remaining -= eeprom.len;
1641 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1642 void __user *useraddr)
1644 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1646 if (!dev->ethtool_ops->get_coalesce)
1649 dev->ethtool_ops->get_coalesce(dev, &coalesce);
1651 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1656 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1657 void __user *useraddr)
1659 struct ethtool_coalesce coalesce;
1661 if (!dev->ethtool_ops->set_coalesce)
1664 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1667 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
1670 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1672 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1674 if (!dev->ethtool_ops->get_ringparam)
1677 dev->ethtool_ops->get_ringparam(dev, &ringparam);
1679 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1684 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1686 struct ethtool_ringparam ringparam;
1688 if (!dev->ethtool_ops->set_ringparam)
1691 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1694 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
1697 static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
1698 void __user *useraddr)
1700 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
1702 if (!dev->ethtool_ops->get_channels)
1705 dev->ethtool_ops->get_channels(dev, &channels);
1707 if (copy_to_user(useraddr, &channels, sizeof(channels)))
1712 static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
1713 void __user *useraddr)
1715 struct ethtool_channels channels, max;
1716 u32 max_rx_in_use = 0;
1718 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels)
1721 if (copy_from_user(&channels, useraddr, sizeof(channels)))
1724 dev->ethtool_ops->get_channels(dev, &max);
1726 /* ensure new counts are within the maximums */
1727 if ((channels.rx_count > max.max_rx) ||
1728 (channels.tx_count > max.max_tx) ||
1729 (channels.combined_count > max.max_combined) ||
1730 (channels.other_count > max.max_other))
1733 /* ensure the new Rx count fits within the configured Rx flow
1734 * indirection table settings */
1735 if (netif_is_rxfh_configured(dev) &&
1736 !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) &&
1737 (channels.combined_count + channels.rx_count) <= max_rx_in_use)
1740 return dev->ethtool_ops->set_channels(dev, &channels);
1743 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1745 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
1747 if (!dev->ethtool_ops->get_pauseparam)
1750 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1752 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1757 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1759 struct ethtool_pauseparam pauseparam;
1761 if (!dev->ethtool_ops->set_pauseparam)
1764 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1767 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1770 static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1772 struct ethtool_test test;
1773 const struct ethtool_ops *ops = dev->ethtool_ops;
1777 if (!ops->self_test || !ops->get_sset_count)
1780 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
1783 WARN_ON(test_len == 0);
1785 if (copy_from_user(&test, useraddr, sizeof(test)))
1788 test.len = test_len;
1789 data = kmalloc(test_len * sizeof(u64), GFP_USER);
1793 ops->self_test(dev, &test, data);
1796 if (copy_to_user(useraddr, &test, sizeof(test)))
1798 useraddr += sizeof(test);
1799 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1808 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1810 struct ethtool_gstrings gstrings;
1814 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1817 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
1823 data = kcalloc(gstrings.len, ETH_GSTRING_LEN, GFP_USER);
1827 __ethtool_get_strings(dev, gstrings.string_set, data);
1830 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1832 useraddr += sizeof(gstrings);
1833 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1842 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1844 struct ethtool_value id;
1846 const struct ethtool_ops *ops = dev->ethtool_ops;
1849 if (!ops->set_phys_id)
1855 if (copy_from_user(&id, useraddr, sizeof(id)))
1858 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
1862 /* Drop the RTNL lock while waiting, but prevent reentry or
1863 * removal of the device.
1870 /* Driver will handle this itself */
1871 schedule_timeout_interruptible(
1872 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
1874 /* Driver expects to be called at twice the frequency in rc */
1875 int n = rc * 2, i, interval = HZ / n;
1877 /* Count down seconds */
1879 /* Count down iterations per second */
1883 rc = ops->set_phys_id(dev,
1884 (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
1888 schedule_timeout_interruptible(interval);
1889 } while (!signal_pending(current) && --i != 0);
1890 } while (!signal_pending(current) &&
1891 (id.data == 0 || --id.data != 0));
1898 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
1902 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1904 struct ethtool_stats stats;
1905 const struct ethtool_ops *ops = dev->ethtool_ops;
1909 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1912 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
1915 WARN_ON(n_stats == 0);
1917 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1920 stats.n_stats = n_stats;
1921 data = kmalloc(n_stats * sizeof(u64), GFP_USER);
1925 ops->get_ethtool_stats(dev, &stats, data);
1928 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1930 useraddr += sizeof(stats);
1931 if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
1940 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
1942 struct ethtool_stats stats;
1943 struct phy_device *phydev = dev->phydev;
1950 n_stats = phy_get_sset_count(phydev);
1954 WARN_ON(n_stats == 0);
1956 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1959 stats.n_stats = n_stats;
1960 data = kmalloc_array(n_stats, sizeof(u64), GFP_USER);
1964 mutex_lock(&phydev->lock);
1965 phydev->drv->get_stats(phydev, &stats, data);
1966 mutex_unlock(&phydev->lock);
1969 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1971 useraddr += sizeof(stats);
1972 if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
1981 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
1983 struct ethtool_perm_addr epaddr;
1985 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
1988 if (epaddr.size < dev->addr_len)
1990 epaddr.size = dev->addr_len;
1992 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
1994 useraddr += sizeof(epaddr);
1995 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
2000 static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
2001 u32 cmd, u32 (*actor)(struct net_device *))
2003 struct ethtool_value edata = { .cmd = cmd };
2008 edata.data = actor(dev);
2010 if (copy_to_user(useraddr, &edata, sizeof(edata)))
2015 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
2016 void (*actor)(struct net_device *, u32))
2018 struct ethtool_value edata;
2023 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2026 actor(dev, edata.data);
2030 static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
2031 int (*actor)(struct net_device *, u32))
2033 struct ethtool_value edata;
2038 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2041 return actor(dev, edata.data);
2044 static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
2045 char __user *useraddr)
2047 struct ethtool_flash efl;
2049 if (copy_from_user(&efl, useraddr, sizeof(efl)))
2052 if (!dev->ethtool_ops->flash_device)
2055 efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
2057 return dev->ethtool_ops->flash_device(dev, &efl);
2060 static int ethtool_set_dump(struct net_device *dev,
2061 void __user *useraddr)
2063 struct ethtool_dump dump;
2065 if (!dev->ethtool_ops->set_dump)
2068 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2071 return dev->ethtool_ops->set_dump(dev, &dump);
2074 static int ethtool_get_dump_flag(struct net_device *dev,
2075 void __user *useraddr)
2078 struct ethtool_dump dump;
2079 const struct ethtool_ops *ops = dev->ethtool_ops;
2081 if (!ops->get_dump_flag)
2084 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2087 ret = ops->get_dump_flag(dev, &dump);
2091 if (copy_to_user(useraddr, &dump, sizeof(dump)))
2096 static int ethtool_get_dump_data(struct net_device *dev,
2097 void __user *useraddr)
2101 struct ethtool_dump dump, tmp;
2102 const struct ethtool_ops *ops = dev->ethtool_ops;
2105 if (!ops->get_dump_data || !ops->get_dump_flag)
2108 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2111 memset(&tmp, 0, sizeof(tmp));
2112 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
2113 ret = ops->get_dump_flag(dev, &tmp);
2117 len = min(tmp.len, dump.len);
2121 /* Don't ever let the driver think there's more space available
2122 * than it requested with .get_dump_flag().
2126 /* Always allocate enough space to hold the whole thing so that the
2127 * driver does not need to check the length and bother with partial
2130 data = vzalloc(tmp.len);
2133 ret = ops->get_dump_data(dev, &dump, data);
2137 /* There are two sane possibilities:
2138 * 1. The driver's .get_dump_data() does not touch dump.len.
2139 * 2. Or it may set dump.len to how much it really writes, which
2140 * should be tmp.len (or len if it can do a partial dump).
2141 * In any case respond to userspace with the actual length of data
2144 WARN_ON(dump.len != len && dump.len != tmp.len);
2147 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
2151 useraddr += offsetof(struct ethtool_dump, data);
2152 if (copy_to_user(useraddr, data, len))
2159 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
2162 struct ethtool_ts_info info;
2163 const struct ethtool_ops *ops = dev->ethtool_ops;
2164 struct phy_device *phydev = dev->phydev;
2166 memset(&info, 0, sizeof(info));
2167 info.cmd = ETHTOOL_GET_TS_INFO;
2169 if (phydev && phydev->drv && phydev->drv->ts_info) {
2170 err = phydev->drv->ts_info(phydev, &info);
2171 } else if (ops->get_ts_info) {
2172 err = ops->get_ts_info(dev, &info);
2174 info.so_timestamping =
2175 SOF_TIMESTAMPING_RX_SOFTWARE |
2176 SOF_TIMESTAMPING_SOFTWARE;
2177 info.phc_index = -1;
2183 if (copy_to_user(useraddr, &info, sizeof(info)))
2189 static int __ethtool_get_module_info(struct net_device *dev,
2190 struct ethtool_modinfo *modinfo)
2192 const struct ethtool_ops *ops = dev->ethtool_ops;
2193 struct phy_device *phydev = dev->phydev;
2195 if (phydev && phydev->drv && phydev->drv->module_info)
2196 return phydev->drv->module_info(phydev, modinfo);
2198 if (ops->get_module_info)
2199 return ops->get_module_info(dev, modinfo);
2204 static int ethtool_get_module_info(struct net_device *dev,
2205 void __user *useraddr)
2208 struct ethtool_modinfo modinfo;
2210 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
2213 ret = __ethtool_get_module_info(dev, &modinfo);
2217 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
2223 static int __ethtool_get_module_eeprom(struct net_device *dev,
2224 struct ethtool_eeprom *ee, u8 *data)
2226 const struct ethtool_ops *ops = dev->ethtool_ops;
2227 struct phy_device *phydev = dev->phydev;
2229 if (phydev && phydev->drv && phydev->drv->module_eeprom)
2230 return phydev->drv->module_eeprom(phydev, ee, data);
2232 if (ops->get_module_eeprom)
2233 return ops->get_module_eeprom(dev, ee, data);
2238 static int ethtool_get_module_eeprom(struct net_device *dev,
2239 void __user *useraddr)
2242 struct ethtool_modinfo modinfo;
2244 ret = __ethtool_get_module_info(dev, &modinfo);
2248 return ethtool_get_any_eeprom(dev, useraddr,
2249 __ethtool_get_module_eeprom,
2250 modinfo.eeprom_len);
2253 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna)
2256 case ETHTOOL_RX_COPYBREAK:
2257 case ETHTOOL_TX_COPYBREAK:
2258 if (tuna->len != sizeof(u32) ||
2259 tuna->type_id != ETHTOOL_TUNABLE_U32)
2269 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr)
2272 struct ethtool_tunable tuna;
2273 const struct ethtool_ops *ops = dev->ethtool_ops;
2276 if (!ops->get_tunable)
2278 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2280 ret = ethtool_tunable_valid(&tuna);
2283 data = kmalloc(tuna.len, GFP_USER);
2286 ret = ops->get_tunable(dev, &tuna, data);
2289 useraddr += sizeof(tuna);
2291 if (copy_to_user(useraddr, data, tuna.len))
2300 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr)
2303 struct ethtool_tunable tuna;
2304 const struct ethtool_ops *ops = dev->ethtool_ops;
2307 if (!ops->set_tunable)
2309 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2311 ret = ethtool_tunable_valid(&tuna);
2314 data = kmalloc(tuna.len, GFP_USER);
2317 useraddr += sizeof(tuna);
2319 if (copy_from_user(data, useraddr, tuna.len))
2321 ret = ops->set_tunable(dev, &tuna, data);
2328 static int ethtool_get_per_queue_coalesce(struct net_device *dev,
2329 void __user *useraddr,
2330 struct ethtool_per_queue_op *per_queue_opt)
2334 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2336 if (!dev->ethtool_ops->get_per_queue_coalesce)
2339 useraddr += sizeof(*per_queue_opt);
2341 bitmap_from_u32array(queue_mask,
2343 per_queue_opt->queue_mask,
2344 DIV_ROUND_UP(MAX_NUM_QUEUE, 32));
2346 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2347 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
2349 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce);
2352 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
2354 useraddr += sizeof(coalesce);
2360 static int ethtool_set_per_queue_coalesce(struct net_device *dev,
2361 void __user *useraddr,
2362 struct ethtool_per_queue_op *per_queue_opt)
2367 struct ethtool_coalesce *backup = NULL, *tmp = NULL;
2368 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2370 if ((!dev->ethtool_ops->set_per_queue_coalesce) ||
2371 (!dev->ethtool_ops->get_per_queue_coalesce))
2374 useraddr += sizeof(*per_queue_opt);
2376 bitmap_from_u32array(queue_mask,
2378 per_queue_opt->queue_mask,
2379 DIV_ROUND_UP(MAX_NUM_QUEUE, 32));
2380 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE);
2381 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL);
2385 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2386 struct ethtool_coalesce coalesce;
2388 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp);
2394 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) {
2399 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce);
2403 useraddr += sizeof(coalesce);
2409 for_each_set_bit(i, queue_mask, bit) {
2410 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp);
2419 static int ethtool_set_per_queue(struct net_device *dev, void __user *useraddr)
2421 struct ethtool_per_queue_op per_queue_opt;
2423 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt)))
2426 switch (per_queue_opt.sub_command) {
2427 case ETHTOOL_GCOALESCE:
2428 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt);
2429 case ETHTOOL_SCOALESCE:
2430 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt);
2436 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna)
2439 case ETHTOOL_PHY_DOWNSHIFT:
2440 if (tuna->len != sizeof(u8) ||
2441 tuna->type_id != ETHTOOL_TUNABLE_U8)
2451 static int get_phy_tunable(struct net_device *dev, void __user *useraddr)
2454 struct ethtool_tunable tuna;
2455 struct phy_device *phydev = dev->phydev;
2458 if (!(phydev && phydev->drv && phydev->drv->get_tunable))
2461 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2463 ret = ethtool_phy_tunable_valid(&tuna);
2466 data = kmalloc(tuna.len, GFP_USER);
2469 mutex_lock(&phydev->lock);
2470 ret = phydev->drv->get_tunable(phydev, &tuna, data);
2471 mutex_unlock(&phydev->lock);
2474 useraddr += sizeof(tuna);
2476 if (copy_to_user(useraddr, data, tuna.len))
2485 static int set_phy_tunable(struct net_device *dev, void __user *useraddr)
2488 struct ethtool_tunable tuna;
2489 struct phy_device *phydev = dev->phydev;
2492 if (!(phydev && phydev->drv && phydev->drv->set_tunable))
2494 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2496 ret = ethtool_phy_tunable_valid(&tuna);
2499 data = kmalloc(tuna.len, GFP_USER);
2502 useraddr += sizeof(tuna);
2504 if (copy_from_user(data, useraddr, tuna.len))
2506 mutex_lock(&phydev->lock);
2507 ret = phydev->drv->set_tunable(phydev, &tuna, data);
2508 mutex_unlock(&phydev->lock);
2515 /* The main entry point in this file. Called from net/core/dev_ioctl.c */
2517 int dev_ethtool(struct net *net, struct ifreq *ifr)
2519 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
2520 void __user *useraddr = ifr->ifr_data;
2521 u32 ethcmd, sub_cmd;
2523 netdev_features_t old_features;
2525 if (!dev || !netif_device_present(dev))
2528 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd)))
2531 if (ethcmd == ETHTOOL_PERQUEUE) {
2532 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd)))
2537 /* Allow some commands to be done by anyone */
2540 case ETHTOOL_GDRVINFO:
2541 case ETHTOOL_GMSGLVL:
2543 case ETHTOOL_GCOALESCE:
2544 case ETHTOOL_GRINGPARAM:
2545 case ETHTOOL_GPAUSEPARAM:
2546 case ETHTOOL_GRXCSUM:
2547 case ETHTOOL_GTXCSUM:
2549 case ETHTOOL_GSSET_INFO:
2550 case ETHTOOL_GSTRINGS:
2551 case ETHTOOL_GSTATS:
2552 case ETHTOOL_GPHYSTATS:
2554 case ETHTOOL_GPERMADDR:
2558 case ETHTOOL_GFLAGS:
2559 case ETHTOOL_GPFLAGS:
2561 case ETHTOOL_GRXRINGS:
2562 case ETHTOOL_GRXCLSRLCNT:
2563 case ETHTOOL_GRXCLSRULE:
2564 case ETHTOOL_GRXCLSRLALL:
2565 case ETHTOOL_GRXFHINDIR:
2567 case ETHTOOL_GFEATURES:
2568 case ETHTOOL_GCHANNELS:
2569 case ETHTOOL_GET_TS_INFO:
2571 case ETHTOOL_GTUNABLE:
2572 case ETHTOOL_PHY_GTUNABLE:
2573 case ETHTOOL_GLINKSETTINGS:
2576 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
2580 if (dev->ethtool_ops->begin) {
2581 rc = dev->ethtool_ops->begin(dev);
2585 old_features = dev->features;
2589 rc = ethtool_get_settings(dev, useraddr);
2592 rc = ethtool_set_settings(dev, useraddr);
2594 case ETHTOOL_GDRVINFO:
2595 rc = ethtool_get_drvinfo(dev, useraddr);
2598 rc = ethtool_get_regs(dev, useraddr);
2601 rc = ethtool_get_wol(dev, useraddr);
2604 rc = ethtool_set_wol(dev, useraddr);
2606 case ETHTOOL_GMSGLVL:
2607 rc = ethtool_get_value(dev, useraddr, ethcmd,
2608 dev->ethtool_ops->get_msglevel);
2610 case ETHTOOL_SMSGLVL:
2611 rc = ethtool_set_value_void(dev, useraddr,
2612 dev->ethtool_ops->set_msglevel);
2615 rc = ethtool_get_eee(dev, useraddr);
2618 rc = ethtool_set_eee(dev, useraddr);
2620 case ETHTOOL_NWAY_RST:
2621 rc = ethtool_nway_reset(dev);
2624 rc = ethtool_get_link(dev, useraddr);
2626 case ETHTOOL_GEEPROM:
2627 rc = ethtool_get_eeprom(dev, useraddr);
2629 case ETHTOOL_SEEPROM:
2630 rc = ethtool_set_eeprom(dev, useraddr);
2632 case ETHTOOL_GCOALESCE:
2633 rc = ethtool_get_coalesce(dev, useraddr);
2635 case ETHTOOL_SCOALESCE:
2636 rc = ethtool_set_coalesce(dev, useraddr);
2638 case ETHTOOL_GRINGPARAM:
2639 rc = ethtool_get_ringparam(dev, useraddr);
2641 case ETHTOOL_SRINGPARAM:
2642 rc = ethtool_set_ringparam(dev, useraddr);
2644 case ETHTOOL_GPAUSEPARAM:
2645 rc = ethtool_get_pauseparam(dev, useraddr);
2647 case ETHTOOL_SPAUSEPARAM:
2648 rc = ethtool_set_pauseparam(dev, useraddr);
2651 rc = ethtool_self_test(dev, useraddr);
2653 case ETHTOOL_GSTRINGS:
2654 rc = ethtool_get_strings(dev, useraddr);
2656 case ETHTOOL_PHYS_ID:
2657 rc = ethtool_phys_id(dev, useraddr);
2659 case ETHTOOL_GSTATS:
2660 rc = ethtool_get_stats(dev, useraddr);
2662 case ETHTOOL_GPERMADDR:
2663 rc = ethtool_get_perm_addr(dev, useraddr);
2665 case ETHTOOL_GFLAGS:
2666 rc = ethtool_get_value(dev, useraddr, ethcmd,
2667 __ethtool_get_flags);
2669 case ETHTOOL_SFLAGS:
2670 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
2672 case ETHTOOL_GPFLAGS:
2673 rc = ethtool_get_value(dev, useraddr, ethcmd,
2674 dev->ethtool_ops->get_priv_flags);
2676 case ETHTOOL_SPFLAGS:
2677 rc = ethtool_set_value(dev, useraddr,
2678 dev->ethtool_ops->set_priv_flags);
2681 case ETHTOOL_GRXRINGS:
2682 case ETHTOOL_GRXCLSRLCNT:
2683 case ETHTOOL_GRXCLSRULE:
2684 case ETHTOOL_GRXCLSRLALL:
2685 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
2688 case ETHTOOL_SRXCLSRLDEL:
2689 case ETHTOOL_SRXCLSRLINS:
2690 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
2692 case ETHTOOL_FLASHDEV:
2693 rc = ethtool_flash_device(dev, useraddr);
2696 rc = ethtool_reset(dev, useraddr);
2698 case ETHTOOL_GSSET_INFO:
2699 rc = ethtool_get_sset_info(dev, useraddr);
2701 case ETHTOOL_GRXFHINDIR:
2702 rc = ethtool_get_rxfh_indir(dev, useraddr);
2704 case ETHTOOL_SRXFHINDIR:
2705 rc = ethtool_set_rxfh_indir(dev, useraddr);
2708 rc = ethtool_get_rxfh(dev, useraddr);
2711 rc = ethtool_set_rxfh(dev, useraddr);
2713 case ETHTOOL_GFEATURES:
2714 rc = ethtool_get_features(dev, useraddr);
2716 case ETHTOOL_SFEATURES:
2717 rc = ethtool_set_features(dev, useraddr);
2719 case ETHTOOL_GTXCSUM:
2720 case ETHTOOL_GRXCSUM:
2726 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
2728 case ETHTOOL_STXCSUM:
2729 case ETHTOOL_SRXCSUM:
2735 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
2737 case ETHTOOL_GCHANNELS:
2738 rc = ethtool_get_channels(dev, useraddr);
2740 case ETHTOOL_SCHANNELS:
2741 rc = ethtool_set_channels(dev, useraddr);
2743 case ETHTOOL_SET_DUMP:
2744 rc = ethtool_set_dump(dev, useraddr);
2746 case ETHTOOL_GET_DUMP_FLAG:
2747 rc = ethtool_get_dump_flag(dev, useraddr);
2749 case ETHTOOL_GET_DUMP_DATA:
2750 rc = ethtool_get_dump_data(dev, useraddr);
2752 case ETHTOOL_GET_TS_INFO:
2753 rc = ethtool_get_ts_info(dev, useraddr);
2755 case ETHTOOL_GMODULEINFO:
2756 rc = ethtool_get_module_info(dev, useraddr);
2758 case ETHTOOL_GMODULEEEPROM:
2759 rc = ethtool_get_module_eeprom(dev, useraddr);
2761 case ETHTOOL_GTUNABLE:
2762 rc = ethtool_get_tunable(dev, useraddr);
2764 case ETHTOOL_STUNABLE:
2765 rc = ethtool_set_tunable(dev, useraddr);
2767 case ETHTOOL_GPHYSTATS:
2768 rc = ethtool_get_phy_stats(dev, useraddr);
2770 case ETHTOOL_PERQUEUE:
2771 rc = ethtool_set_per_queue(dev, useraddr);
2773 case ETHTOOL_GLINKSETTINGS:
2774 rc = ethtool_get_link_ksettings(dev, useraddr);
2776 case ETHTOOL_SLINKSETTINGS:
2777 rc = ethtool_set_link_ksettings(dev, useraddr);
2779 case ETHTOOL_PHY_GTUNABLE:
2780 rc = get_phy_tunable(dev, useraddr);
2782 case ETHTOOL_PHY_STUNABLE:
2783 rc = set_phy_tunable(dev, useraddr);
2789 if (dev->ethtool_ops->complete)
2790 dev->ethtool_ops->complete(dev);
2792 if (old_features != dev->features)
2793 netdev_features_change(dev);