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/signal.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_GSO_ROBUST_BIT] = "tx-gso-robust",
80 [NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation",
81 [NETIF_F_TSO_MANGLEID_BIT] = "tx-tcp-mangleid-segmentation",
82 [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation",
83 [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation",
84 [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation",
85 [NETIF_F_GSO_GRE_CSUM_BIT] = "tx-gre-csum-segmentation",
86 [NETIF_F_GSO_IPXIP4_BIT] = "tx-ipxip4-segmentation",
87 [NETIF_F_GSO_IPXIP6_BIT] = "tx-ipxip6-segmentation",
88 [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation",
89 [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation",
90 [NETIF_F_GSO_PARTIAL_BIT] = "tx-gso-partial",
91 [NETIF_F_GSO_SCTP_BIT] = "tx-sctp-segmentation",
92 [NETIF_F_GSO_ESP_BIT] = "tx-esp-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_HW_TC_BIT] = "hw-tc-offload",
106 [NETIF_F_HW_ESP_BIT] = "esp-hw-offload",
107 [NETIF_F_HW_ESP_TX_CSUM_BIT] = "esp-tx-csum-hw-offload",
108 [NETIF_F_RX_UDP_TUNNEL_PORT_BIT] = "rx-udp_tunnel-port-offload",
112 rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = {
113 [ETH_RSS_HASH_TOP_BIT] = "toeplitz",
114 [ETH_RSS_HASH_XOR_BIT] = "xor",
115 [ETH_RSS_HASH_CRC32_BIT] = "crc32",
119 tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
120 [ETHTOOL_ID_UNSPEC] = "Unspec",
121 [ETHTOOL_RX_COPYBREAK] = "rx-copybreak",
122 [ETHTOOL_TX_COPYBREAK] = "tx-copybreak",
126 phy_tunable_strings[__ETHTOOL_PHY_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
127 [ETHTOOL_ID_UNSPEC] = "Unspec",
128 [ETHTOOL_PHY_DOWNSHIFT] = "phy-downshift",
131 static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
133 struct ethtool_gfeatures cmd = {
134 .cmd = ETHTOOL_GFEATURES,
135 .size = ETHTOOL_DEV_FEATURE_WORDS,
137 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
138 u32 __user *sizeaddr;
142 /* in case feature bits run out again */
143 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t));
145 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
146 features[i].available = (u32)(dev->hw_features >> (32 * i));
147 features[i].requested = (u32)(dev->wanted_features >> (32 * i));
148 features[i].active = (u32)(dev->features >> (32 * i));
149 features[i].never_changed =
150 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i));
153 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
154 if (get_user(copy_size, sizeaddr))
157 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
158 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
160 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
162 useraddr += sizeof(cmd);
163 if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
169 static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
171 struct ethtool_sfeatures cmd;
172 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
173 netdev_features_t wanted = 0, valid = 0;
176 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
178 useraddr += sizeof(cmd);
180 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
183 if (copy_from_user(features, useraddr, sizeof(features)))
186 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
187 valid |= (netdev_features_t)features[i].valid << (32 * i);
188 wanted |= (netdev_features_t)features[i].requested << (32 * i);
191 if (valid & ~NETIF_F_ETHTOOL_BITS)
194 if (valid & ~dev->hw_features) {
195 valid &= dev->hw_features;
196 ret |= ETHTOOL_F_UNSUPPORTED;
199 dev->wanted_features &= ~valid;
200 dev->wanted_features |= wanted & valid;
201 __netdev_update_features(dev);
203 if ((dev->wanted_features ^ dev->features) & valid)
204 ret |= ETHTOOL_F_WISH;
209 static int phy_get_sset_count(struct phy_device *phydev)
213 if (phydev->drv->get_sset_count &&
214 phydev->drv->get_strings &&
215 phydev->drv->get_stats) {
216 mutex_lock(&phydev->lock);
217 ret = phydev->drv->get_sset_count(phydev);
218 mutex_unlock(&phydev->lock);
226 static int __ethtool_get_sset_count(struct net_device *dev, int sset)
228 const struct ethtool_ops *ops = dev->ethtool_ops;
230 if (sset == ETH_SS_FEATURES)
231 return ARRAY_SIZE(netdev_features_strings);
233 if (sset == ETH_SS_RSS_HASH_FUNCS)
234 return ARRAY_SIZE(rss_hash_func_strings);
236 if (sset == ETH_SS_TUNABLES)
237 return ARRAY_SIZE(tunable_strings);
239 if (sset == ETH_SS_PHY_TUNABLES)
240 return ARRAY_SIZE(phy_tunable_strings);
242 if (sset == ETH_SS_PHY_STATS) {
244 return phy_get_sset_count(dev->phydev);
249 if (ops->get_sset_count && ops->get_strings)
250 return ops->get_sset_count(dev, sset);
255 static void __ethtool_get_strings(struct net_device *dev,
256 u32 stringset, u8 *data)
258 const struct ethtool_ops *ops = dev->ethtool_ops;
260 if (stringset == ETH_SS_FEATURES)
261 memcpy(data, netdev_features_strings,
262 sizeof(netdev_features_strings));
263 else if (stringset == ETH_SS_RSS_HASH_FUNCS)
264 memcpy(data, rss_hash_func_strings,
265 sizeof(rss_hash_func_strings));
266 else if (stringset == ETH_SS_TUNABLES)
267 memcpy(data, tunable_strings, sizeof(tunable_strings));
268 else if (stringset == ETH_SS_PHY_TUNABLES)
269 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings));
270 else if (stringset == ETH_SS_PHY_STATS) {
271 struct phy_device *phydev = dev->phydev;
274 mutex_lock(&phydev->lock);
275 phydev->drv->get_strings(phydev, data);
276 mutex_unlock(&phydev->lock);
281 /* ops->get_strings is valid because checked earlier */
282 ops->get_strings(dev, stringset, data);
285 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd)
287 /* feature masks of legacy discrete ethtool ops */
290 case ETHTOOL_GTXCSUM:
291 case ETHTOOL_STXCSUM:
292 return NETIF_F_CSUM_MASK | NETIF_F_SCTP_CRC;
293 case ETHTOOL_GRXCSUM:
294 case ETHTOOL_SRXCSUM:
295 return NETIF_F_RXCSUM;
301 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;
528 legacy_settings->transceiver
529 = link_ksettings->base.transceiver;
533 /* number of 32-bit words to store the user's link mode bitmaps */
534 #define __ETHTOOL_LINK_MODE_MASK_NU32 \
535 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
537 /* layout of the struct passed from/to userland */
538 struct ethtool_link_usettings {
539 struct ethtool_link_settings base;
541 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32];
542 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
543 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
547 /* Internal kernel helper to query a device ethtool_link_settings.
549 * Backward compatibility note: for compatibility with legacy drivers
550 * that implement only the ethtool_cmd API, this has to work with both
551 * drivers implementing get_link_ksettings API and drivers
552 * implementing get_settings API. When drivers implement get_settings
553 * and report ethtool_cmd deprecated fields
554 * (transceiver/maxrxpkt/maxtxpkt), these fields are silently ignored
555 * because the resulting struct ethtool_link_settings does not report them.
557 int __ethtool_get_link_ksettings(struct net_device *dev,
558 struct ethtool_link_ksettings *link_ksettings)
561 struct ethtool_cmd cmd;
565 if (dev->ethtool_ops->get_link_ksettings) {
566 memset(link_ksettings, 0, sizeof(*link_ksettings));
567 return dev->ethtool_ops->get_link_ksettings(dev,
571 /* driver doesn't support %ethtool_link_ksettings API. revert to
572 * legacy %ethtool_cmd API, unless it's not supported either.
573 * TODO: remove when ethtool_ops::get_settings disappears internally
575 if (!dev->ethtool_ops->get_settings)
578 memset(&cmd, 0, sizeof(cmd));
579 cmd.cmd = ETHTOOL_GSET;
580 err = dev->ethtool_ops->get_settings(dev, &cmd);
584 /* we ignore deprecated fields transceiver/maxrxpkt/maxtxpkt
586 convert_legacy_settings_to_link_ksettings(link_ksettings, &cmd);
589 EXPORT_SYMBOL(__ethtool_get_link_ksettings);
591 /* convert ethtool_link_usettings in user space to a kernel internal
592 * ethtool_link_ksettings. return 0 on success, errno on error.
594 static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to,
595 const void __user *from)
597 struct ethtool_link_usettings link_usettings;
599 if (copy_from_user(&link_usettings, from, sizeof(link_usettings)))
602 memcpy(&to->base, &link_usettings.base, sizeof(to->base));
603 bitmap_from_u32array(to->link_modes.supported,
604 __ETHTOOL_LINK_MODE_MASK_NBITS,
605 link_usettings.link_modes.supported,
606 __ETHTOOL_LINK_MODE_MASK_NU32);
607 bitmap_from_u32array(to->link_modes.advertising,
608 __ETHTOOL_LINK_MODE_MASK_NBITS,
609 link_usettings.link_modes.advertising,
610 __ETHTOOL_LINK_MODE_MASK_NU32);
611 bitmap_from_u32array(to->link_modes.lp_advertising,
612 __ETHTOOL_LINK_MODE_MASK_NBITS,
613 link_usettings.link_modes.lp_advertising,
614 __ETHTOOL_LINK_MODE_MASK_NU32);
619 /* convert a kernel internal ethtool_link_ksettings to
620 * ethtool_link_usettings in user space. return 0 on success, errno on
624 store_link_ksettings_for_user(void __user *to,
625 const struct ethtool_link_ksettings *from)
627 struct ethtool_link_usettings link_usettings;
629 memcpy(&link_usettings.base, &from->base, sizeof(link_usettings));
630 bitmap_to_u32array(link_usettings.link_modes.supported,
631 __ETHTOOL_LINK_MODE_MASK_NU32,
632 from->link_modes.supported,
633 __ETHTOOL_LINK_MODE_MASK_NBITS);
634 bitmap_to_u32array(link_usettings.link_modes.advertising,
635 __ETHTOOL_LINK_MODE_MASK_NU32,
636 from->link_modes.advertising,
637 __ETHTOOL_LINK_MODE_MASK_NBITS);
638 bitmap_to_u32array(link_usettings.link_modes.lp_advertising,
639 __ETHTOOL_LINK_MODE_MASK_NU32,
640 from->link_modes.lp_advertising,
641 __ETHTOOL_LINK_MODE_MASK_NBITS);
643 if (copy_to_user(to, &link_usettings, sizeof(link_usettings)))
649 /* Query device for its ethtool_link_settings.
651 * Backward compatibility note: this function must fail when driver
652 * does not implement ethtool::get_link_ksettings, even if legacy
653 * ethtool_ops::get_settings is implemented. This tells new versions
654 * of ethtool that they should use the legacy API %ETHTOOL_GSET for
655 * this driver, so that they can correctly access the ethtool_cmd
656 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
657 * implements ethtool_ops::get_settings anymore.
659 static int ethtool_get_link_ksettings(struct net_device *dev,
660 void __user *useraddr)
663 struct ethtool_link_ksettings link_ksettings;
667 if (!dev->ethtool_ops->get_link_ksettings)
670 /* handle bitmap nbits handshake */
671 if (copy_from_user(&link_ksettings.base, useraddr,
672 sizeof(link_ksettings.base)))
675 if (__ETHTOOL_LINK_MODE_MASK_NU32
676 != link_ksettings.base.link_mode_masks_nwords) {
677 /* wrong link mode nbits requested */
678 memset(&link_ksettings, 0, sizeof(link_ksettings));
679 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
680 /* send back number of words required as negative val */
681 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX,
682 "need too many bits for link modes!");
683 link_ksettings.base.link_mode_masks_nwords
684 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32);
686 /* copy the base fields back to user, not the link
689 if (copy_to_user(useraddr, &link_ksettings.base,
690 sizeof(link_ksettings.base)))
696 /* handshake successful: user/kernel agree on
697 * link_mode_masks_nwords
700 memset(&link_ksettings, 0, sizeof(link_ksettings));
701 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
705 /* make sure we tell the right values to user */
706 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
707 link_ksettings.base.link_mode_masks_nwords
708 = __ETHTOOL_LINK_MODE_MASK_NU32;
710 return store_link_ksettings_for_user(useraddr, &link_ksettings);
713 /* Update device ethtool_link_settings.
715 * Backward compatibility note: this function must fail when driver
716 * does not implement ethtool::set_link_ksettings, even if legacy
717 * ethtool_ops::set_settings is implemented. This tells new versions
718 * of ethtool that they should use the legacy API %ETHTOOL_SSET for
719 * this driver, so that they can correctly update the ethtool_cmd
720 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
721 * implements ethtool_ops::get_settings anymore.
723 static int ethtool_set_link_ksettings(struct net_device *dev,
724 void __user *useraddr)
727 struct ethtool_link_ksettings link_ksettings;
731 if (!dev->ethtool_ops->set_link_ksettings)
734 /* make sure nbits field has expected value */
735 if (copy_from_user(&link_ksettings.base, useraddr,
736 sizeof(link_ksettings.base)))
739 if (__ETHTOOL_LINK_MODE_MASK_NU32
740 != link_ksettings.base.link_mode_masks_nwords)
743 /* copy the whole structure, now that we know it has expected
746 err = load_link_ksettings_from_user(&link_ksettings, useraddr);
750 /* re-check nwords field, just in case */
751 if (__ETHTOOL_LINK_MODE_MASK_NU32
752 != link_ksettings.base.link_mode_masks_nwords)
755 return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
759 warn_incomplete_ethtool_legacy_settings_conversion(const char *details)
761 char name[sizeof(current->comm)];
763 pr_info_once("warning: `%s' uses legacy ethtool link settings API, %s\n",
764 get_task_comm(name, current), details);
767 /* Query device for its ethtool_cmd settings.
769 * Backward compatibility note: for compatibility with legacy ethtool,
770 * this has to work with both drivers implementing get_link_ksettings
771 * API and drivers implementing get_settings API. When drivers
772 * implement get_link_ksettings and report higher link mode bits, a
773 * kernel warning is logged once (with name of 1st driver/device) to
774 * recommend user to upgrade ethtool, but the command is successful
775 * (only the lower link mode bits reported back to user).
777 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
779 struct ethtool_cmd cmd;
783 if (dev->ethtool_ops->get_link_ksettings) {
784 /* First, use link_ksettings API if it is supported */
786 struct ethtool_link_ksettings link_ksettings;
788 memset(&link_ksettings, 0, sizeof(link_ksettings));
789 err = dev->ethtool_ops->get_link_ksettings(dev,
793 if (!convert_link_ksettings_to_legacy_settings(&cmd,
795 warn_incomplete_ethtool_legacy_settings_conversion(
796 "link modes are only partially reported");
798 /* send a sensible cmd tag back to user */
799 cmd.cmd = ETHTOOL_GSET;
801 /* driver doesn't support %ethtool_link_ksettings
802 * API. revert to legacy %ethtool_cmd API, unless it's
803 * not supported either.
807 if (!dev->ethtool_ops->get_settings)
810 memset(&cmd, 0, sizeof(cmd));
811 cmd.cmd = ETHTOOL_GSET;
812 err = dev->ethtool_ops->get_settings(dev, &cmd);
817 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
823 /* Update device link settings with given ethtool_cmd.
825 * Backward compatibility note: for compatibility with legacy ethtool,
826 * this has to work with both drivers implementing set_link_ksettings
827 * API and drivers implementing set_settings API. When drivers
828 * implement set_link_ksettings and user's request updates deprecated
829 * ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
830 * warning is logged once (with name of 1st driver/device) to
831 * recommend user to upgrade ethtool, and the request is rejected.
833 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
835 struct ethtool_cmd cmd;
839 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
842 /* first, try new %ethtool_link_ksettings API. */
843 if (dev->ethtool_ops->set_link_ksettings) {
844 struct ethtool_link_ksettings link_ksettings;
846 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings,
850 link_ksettings.base.cmd = ETHTOOL_SLINKSETTINGS;
851 link_ksettings.base.link_mode_masks_nwords
852 = __ETHTOOL_LINK_MODE_MASK_NU32;
853 return dev->ethtool_ops->set_link_ksettings(dev,
857 /* legacy %ethtool_cmd API */
859 /* TODO: return -EOPNOTSUPP when ethtool_ops::get_settings
860 * disappears internally
863 if (!dev->ethtool_ops->set_settings)
866 return dev->ethtool_ops->set_settings(dev, &cmd);
869 static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
870 void __user *useraddr)
872 struct ethtool_drvinfo info;
873 const struct ethtool_ops *ops = dev->ethtool_ops;
875 memset(&info, 0, sizeof(info));
876 info.cmd = ETHTOOL_GDRVINFO;
877 if (ops->get_drvinfo) {
878 ops->get_drvinfo(dev, &info);
879 } else if (dev->dev.parent && dev->dev.parent->driver) {
880 strlcpy(info.bus_info, dev_name(dev->dev.parent),
881 sizeof(info.bus_info));
882 strlcpy(info.driver, dev->dev.parent->driver->name,
883 sizeof(info.driver));
889 * this method of obtaining string set info is deprecated;
890 * Use ETHTOOL_GSSET_INFO instead.
892 if (ops->get_sset_count) {
895 rc = ops->get_sset_count(dev, ETH_SS_TEST);
897 info.testinfo_len = rc;
898 rc = ops->get_sset_count(dev, ETH_SS_STATS);
901 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
903 info.n_priv_flags = rc;
905 if (ops->get_regs_len)
906 info.regdump_len = ops->get_regs_len(dev);
907 if (ops->get_eeprom_len)
908 info.eedump_len = ops->get_eeprom_len(dev);
910 if (copy_to_user(useraddr, &info, sizeof(info)))
915 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
916 void __user *useraddr)
918 struct ethtool_sset_info info;
920 int i, idx = 0, n_bits = 0, ret, rc;
921 u32 *info_buf = NULL;
923 if (copy_from_user(&info, useraddr, sizeof(info)))
926 /* store copy of mask, because we zero struct later on */
927 sset_mask = info.sset_mask;
931 /* calculate size of return buffer */
932 n_bits = hweight64(sset_mask);
934 memset(&info, 0, sizeof(info));
935 info.cmd = ETHTOOL_GSSET_INFO;
937 info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
942 * fill return buffer based on input bitmask and successful
943 * get_sset_count return
945 for (i = 0; i < 64; i++) {
946 if (!(sset_mask & (1ULL << i)))
949 rc = __ethtool_get_sset_count(dev, i);
951 info.sset_mask |= (1ULL << i);
952 info_buf[idx++] = rc;
957 if (copy_to_user(useraddr, &info, sizeof(info)))
960 useraddr += offsetof(struct ethtool_sset_info, data);
961 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
971 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
972 u32 cmd, void __user *useraddr)
974 struct ethtool_rxnfc info;
975 size_t info_size = sizeof(info);
978 if (!dev->ethtool_ops->set_rxnfc)
981 /* struct ethtool_rxnfc was originally defined for
982 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
983 * members. User-space might still be using that
985 if (cmd == ETHTOOL_SRXFH)
986 info_size = (offsetof(struct ethtool_rxnfc, data) +
989 if (copy_from_user(&info, useraddr, info_size))
992 rc = dev->ethtool_ops->set_rxnfc(dev, &info);
996 if (cmd == ETHTOOL_SRXCLSRLINS &&
997 copy_to_user(useraddr, &info, info_size))
1003 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
1004 u32 cmd, void __user *useraddr)
1006 struct ethtool_rxnfc info;
1007 size_t info_size = sizeof(info);
1008 const struct ethtool_ops *ops = dev->ethtool_ops;
1010 void *rule_buf = NULL;
1012 if (!ops->get_rxnfc)
1015 /* struct ethtool_rxnfc was originally defined for
1016 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
1017 * members. User-space might still be using that
1019 if (cmd == ETHTOOL_GRXFH)
1020 info_size = (offsetof(struct ethtool_rxnfc, data) +
1023 if (copy_from_user(&info, useraddr, info_size))
1026 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
1027 if (info.rule_cnt > 0) {
1028 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
1029 rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
1036 ret = ops->get_rxnfc(dev, &info, rule_buf);
1041 if (copy_to_user(useraddr, &info, info_size))
1045 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
1046 if (copy_to_user(useraddr, rule_buf,
1047 info.rule_cnt * sizeof(u32)))
1058 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr,
1059 struct ethtool_rxnfc *rx_rings,
1064 if (copy_from_user(indir, useraddr, size * sizeof(indir[0])))
1067 /* Validate ring indices */
1068 for (i = 0; i < size; i++)
1069 if (indir[i] >= rx_rings->data)
1075 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly;
1077 void netdev_rss_key_fill(void *buffer, size_t len)
1079 BUG_ON(len > sizeof(netdev_rss_key));
1080 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key));
1081 memcpy(buffer, netdev_rss_key, len);
1083 EXPORT_SYMBOL(netdev_rss_key_fill);
1085 static int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max)
1087 u32 dev_size, current_max = 0;
1091 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1092 !dev->ethtool_ops->get_rxfh)
1094 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1098 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1102 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1107 current_max = max(current_max, indir[dev_size]);
1116 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
1117 void __user *useraddr)
1119 u32 user_size, dev_size;
1123 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1124 !dev->ethtool_ops->get_rxfh)
1126 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1130 if (copy_from_user(&user_size,
1131 useraddr + offsetof(struct ethtool_rxfh_indir, size),
1135 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
1136 &dev_size, sizeof(dev_size)))
1139 /* If the user buffer size is 0, this is just a query for the
1140 * device table size. Otherwise, if it's smaller than the
1141 * device table size it's an error.
1143 if (user_size < dev_size)
1144 return user_size == 0 ? 0 : -EINVAL;
1146 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1150 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1154 if (copy_to_user(useraddr +
1155 offsetof(struct ethtool_rxfh_indir, ring_index[0]),
1156 indir, dev_size * sizeof(indir[0])))
1164 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
1165 void __user *useraddr)
1167 struct ethtool_rxnfc rx_rings;
1168 u32 user_size, dev_size, i;
1170 const struct ethtool_ops *ops = dev->ethtool_ops;
1172 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]);
1174 if (!ops->get_rxfh_indir_size || !ops->set_rxfh ||
1178 dev_size = ops->get_rxfh_indir_size(dev);
1182 if (copy_from_user(&user_size,
1183 useraddr + offsetof(struct ethtool_rxfh_indir, size),
1187 if (user_size != 0 && user_size != dev_size)
1190 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1194 rx_rings.cmd = ETHTOOL_GRXRINGS;
1195 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1199 if (user_size == 0) {
1200 for (i = 0; i < dev_size; i++)
1201 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1203 ret = ethtool_copy_validate_indir(indir,
1204 useraddr + ringidx_offset,
1211 ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE);
1215 /* indicate whether rxfh was set to default */
1217 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1219 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1226 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
1227 void __user *useraddr)
1230 const struct ethtool_ops *ops = dev->ethtool_ops;
1231 u32 user_indir_size, user_key_size;
1232 u32 dev_indir_size = 0, dev_key_size = 0;
1233 struct ethtool_rxfh rxfh;
1244 if (ops->get_rxfh_indir_size)
1245 dev_indir_size = ops->get_rxfh_indir_size(dev);
1246 if (ops->get_rxfh_key_size)
1247 dev_key_size = ops->get_rxfh_key_size(dev);
1249 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
1251 user_indir_size = rxfh.indir_size;
1252 user_key_size = rxfh.key_size;
1254 /* Check that reserved fields are 0 for now */
1255 if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] ||
1256 rxfh.rsvd8[2] || rxfh.rsvd32)
1259 rxfh.indir_size = dev_indir_size;
1260 rxfh.key_size = dev_key_size;
1261 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh)))
1264 if ((user_indir_size && (user_indir_size != dev_indir_size)) ||
1265 (user_key_size && (user_key_size != dev_key_size)))
1268 indir_bytes = user_indir_size * sizeof(indir[0]);
1269 total_size = indir_bytes + user_key_size;
1270 rss_config = kzalloc(total_size, GFP_USER);
1274 if (user_indir_size)
1275 indir = (u32 *)rss_config;
1278 hkey = rss_config + indir_bytes;
1280 ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc);
1284 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc),
1285 &dev_hfunc, sizeof(rxfh.hfunc))) {
1287 } else if (copy_to_user(useraddr +
1288 offsetof(struct ethtool_rxfh, rss_config[0]),
1289 rss_config, total_size)) {
1298 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
1299 void __user *useraddr)
1302 const struct ethtool_ops *ops = dev->ethtool_ops;
1303 struct ethtool_rxnfc rx_rings;
1304 struct ethtool_rxfh rxfh;
1305 u32 dev_indir_size = 0, dev_key_size = 0, i;
1306 u32 *indir = NULL, indir_bytes = 0;
1309 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]);
1311 if (!ops->get_rxnfc || !ops->set_rxfh)
1314 if (ops->get_rxfh_indir_size)
1315 dev_indir_size = ops->get_rxfh_indir_size(dev);
1316 if (ops->get_rxfh_key_size)
1317 dev_key_size = ops->get_rxfh_key_size(dev);
1319 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
1322 /* Check that reserved fields are 0 for now */
1323 if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] ||
1324 rxfh.rsvd8[2] || rxfh.rsvd32)
1327 /* If either indir, hash key or function is valid, proceed further.
1328 * Must request at least one change: indir size, hash key or function.
1330 if ((rxfh.indir_size &&
1331 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE &&
1332 rxfh.indir_size != dev_indir_size) ||
1333 (rxfh.key_size && (rxfh.key_size != dev_key_size)) ||
1334 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE &&
1335 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE))
1338 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1339 indir_bytes = dev_indir_size * sizeof(indir[0]);
1341 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER);
1345 rx_rings.cmd = ETHTOOL_GRXRINGS;
1346 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1350 /* rxfh.indir_size == 0 means reset the indir table to default.
1351 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
1353 if (rxfh.indir_size &&
1354 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) {
1355 indir = (u32 *)rss_config;
1356 ret = ethtool_copy_validate_indir(indir,
1357 useraddr + rss_cfg_offset,
1362 } else if (rxfh.indir_size == 0) {
1363 indir = (u32 *)rss_config;
1364 for (i = 0; i < dev_indir_size; i++)
1365 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1368 if (rxfh.key_size) {
1369 hkey = rss_config + indir_bytes;
1370 if (copy_from_user(hkey,
1371 useraddr + rss_cfg_offset + indir_bytes,
1378 ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc);
1382 /* indicate whether rxfh was set to default */
1383 if (rxfh.indir_size == 0)
1384 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1385 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1386 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1393 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
1395 struct ethtool_regs regs;
1396 const struct ethtool_ops *ops = dev->ethtool_ops;
1400 if (!ops->get_regs || !ops->get_regs_len)
1403 if (copy_from_user(®s, useraddr, sizeof(regs)))
1406 reglen = ops->get_regs_len(dev);
1407 if (regs.len > reglen)
1412 regbuf = vzalloc(reglen);
1417 ops->get_regs(dev, ®s, regbuf);
1420 if (copy_to_user(useraddr, ®s, sizeof(regs)))
1422 useraddr += offsetof(struct ethtool_regs, data);
1423 if (regbuf && copy_to_user(useraddr, regbuf, regs.len))
1432 static int ethtool_reset(struct net_device *dev, char __user *useraddr)
1434 struct ethtool_value reset;
1437 if (!dev->ethtool_ops->reset)
1440 if (copy_from_user(&reset, useraddr, sizeof(reset)))
1443 ret = dev->ethtool_ops->reset(dev, &reset.data);
1447 if (copy_to_user(useraddr, &reset, sizeof(reset)))
1452 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
1454 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
1456 if (!dev->ethtool_ops->get_wol)
1459 dev->ethtool_ops->get_wol(dev, &wol);
1461 if (copy_to_user(useraddr, &wol, sizeof(wol)))
1466 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
1468 struct ethtool_wolinfo wol;
1470 if (!dev->ethtool_ops->set_wol)
1473 if (copy_from_user(&wol, useraddr, sizeof(wol)))
1476 return dev->ethtool_ops->set_wol(dev, &wol);
1479 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
1481 struct ethtool_eee edata;
1484 if (!dev->ethtool_ops->get_eee)
1487 memset(&edata, 0, sizeof(struct ethtool_eee));
1488 edata.cmd = ETHTOOL_GEEE;
1489 rc = dev->ethtool_ops->get_eee(dev, &edata);
1494 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1500 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
1502 struct ethtool_eee edata;
1504 if (!dev->ethtool_ops->set_eee)
1507 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1510 return dev->ethtool_ops->set_eee(dev, &edata);
1513 static int ethtool_nway_reset(struct net_device *dev)
1515 if (!dev->ethtool_ops->nway_reset)
1518 return dev->ethtool_ops->nway_reset(dev);
1521 static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
1523 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
1525 if (!dev->ethtool_ops->get_link)
1528 edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
1530 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1535 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
1536 int (*getter)(struct net_device *,
1537 struct ethtool_eeprom *, u8 *),
1540 struct ethtool_eeprom eeprom;
1541 void __user *userbuf = useraddr + sizeof(eeprom);
1542 u32 bytes_remaining;
1546 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1549 /* Check for wrap and zero */
1550 if (eeprom.offset + eeprom.len <= eeprom.offset)
1553 /* Check for exceeding total eeprom len */
1554 if (eeprom.offset + eeprom.len > total_len)
1557 data = kmalloc(PAGE_SIZE, GFP_USER);
1561 bytes_remaining = eeprom.len;
1562 while (bytes_remaining > 0) {
1563 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1565 ret = getter(dev, &eeprom, data);
1568 if (copy_to_user(userbuf, data, eeprom.len)) {
1572 userbuf += eeprom.len;
1573 eeprom.offset += eeprom.len;
1574 bytes_remaining -= eeprom.len;
1577 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
1578 eeprom.offset -= eeprom.len;
1579 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
1586 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
1588 const struct ethtool_ops *ops = dev->ethtool_ops;
1590 if (!ops->get_eeprom || !ops->get_eeprom_len ||
1591 !ops->get_eeprom_len(dev))
1594 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
1595 ops->get_eeprom_len(dev));
1598 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
1600 struct ethtool_eeprom eeprom;
1601 const struct ethtool_ops *ops = dev->ethtool_ops;
1602 void __user *userbuf = useraddr + sizeof(eeprom);
1603 u32 bytes_remaining;
1607 if (!ops->set_eeprom || !ops->get_eeprom_len ||
1608 !ops->get_eeprom_len(dev))
1611 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1614 /* Check for wrap and zero */
1615 if (eeprom.offset + eeprom.len <= eeprom.offset)
1618 /* Check for exceeding total eeprom len */
1619 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1622 data = kmalloc(PAGE_SIZE, GFP_USER);
1626 bytes_remaining = eeprom.len;
1627 while (bytes_remaining > 0) {
1628 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1630 if (copy_from_user(data, userbuf, eeprom.len)) {
1634 ret = ops->set_eeprom(dev, &eeprom, data);
1637 userbuf += eeprom.len;
1638 eeprom.offset += eeprom.len;
1639 bytes_remaining -= eeprom.len;
1646 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1647 void __user *useraddr)
1649 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1651 if (!dev->ethtool_ops->get_coalesce)
1654 dev->ethtool_ops->get_coalesce(dev, &coalesce);
1656 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1661 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1662 void __user *useraddr)
1664 struct ethtool_coalesce coalesce;
1666 if (!dev->ethtool_ops->set_coalesce)
1669 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1672 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
1675 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1677 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1679 if (!dev->ethtool_ops->get_ringparam)
1682 dev->ethtool_ops->get_ringparam(dev, &ringparam);
1684 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1689 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1691 struct ethtool_ringparam ringparam;
1693 if (!dev->ethtool_ops->set_ringparam)
1696 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1699 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
1702 static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
1703 void __user *useraddr)
1705 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
1707 if (!dev->ethtool_ops->get_channels)
1710 dev->ethtool_ops->get_channels(dev, &channels);
1712 if (copy_to_user(useraddr, &channels, sizeof(channels)))
1717 static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
1718 void __user *useraddr)
1720 struct ethtool_channels channels, max = { .cmd = ETHTOOL_GCHANNELS };
1721 u32 max_rx_in_use = 0;
1723 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels)
1726 if (copy_from_user(&channels, useraddr, sizeof(channels)))
1729 dev->ethtool_ops->get_channels(dev, &max);
1731 /* ensure new counts are within the maximums */
1732 if ((channels.rx_count > max.max_rx) ||
1733 (channels.tx_count > max.max_tx) ||
1734 (channels.combined_count > max.max_combined) ||
1735 (channels.other_count > max.max_other))
1738 /* ensure the new Rx count fits within the configured Rx flow
1739 * indirection table settings */
1740 if (netif_is_rxfh_configured(dev) &&
1741 !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) &&
1742 (channels.combined_count + channels.rx_count) <= max_rx_in_use)
1745 return dev->ethtool_ops->set_channels(dev, &channels);
1748 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1750 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
1752 if (!dev->ethtool_ops->get_pauseparam)
1755 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1757 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1762 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1764 struct ethtool_pauseparam pauseparam;
1766 if (!dev->ethtool_ops->set_pauseparam)
1769 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1772 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1775 static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1777 struct ethtool_test test;
1778 const struct ethtool_ops *ops = dev->ethtool_ops;
1782 if (!ops->self_test || !ops->get_sset_count)
1785 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
1788 WARN_ON(test_len == 0);
1790 if (copy_from_user(&test, useraddr, sizeof(test)))
1793 test.len = test_len;
1794 data = kmalloc(test_len * sizeof(u64), GFP_USER);
1798 ops->self_test(dev, &test, data);
1801 if (copy_to_user(useraddr, &test, sizeof(test)))
1803 useraddr += sizeof(test);
1804 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1813 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1815 struct ethtool_gstrings gstrings;
1819 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1822 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
1825 if (ret > S32_MAX / ETH_GSTRING_LEN)
1830 data = vzalloc(gstrings.len * ETH_GSTRING_LEN);
1831 if (gstrings.len && !data)
1834 __ethtool_get_strings(dev, gstrings.string_set, data);
1837 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1839 useraddr += sizeof(gstrings);
1841 copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1850 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1852 struct ethtool_value id;
1854 const struct ethtool_ops *ops = dev->ethtool_ops;
1857 if (!ops->set_phys_id)
1863 if (copy_from_user(&id, useraddr, sizeof(id)))
1866 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
1870 /* Drop the RTNL lock while waiting, but prevent reentry or
1871 * removal of the device.
1878 /* Driver will handle this itself */
1879 schedule_timeout_interruptible(
1880 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
1882 /* Driver expects to be called at twice the frequency in rc */
1883 int n = rc * 2, i, interval = HZ / n;
1885 /* Count down seconds */
1887 /* Count down iterations per second */
1891 rc = ops->set_phys_id(dev,
1892 (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
1896 schedule_timeout_interruptible(interval);
1897 } while (!signal_pending(current) && --i != 0);
1898 } while (!signal_pending(current) &&
1899 (id.data == 0 || --id.data != 0));
1906 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
1910 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1912 struct ethtool_stats stats;
1913 const struct ethtool_ops *ops = dev->ethtool_ops;
1917 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1920 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
1923 if (n_stats > S32_MAX / sizeof(u64))
1925 WARN_ON_ONCE(!n_stats);
1926 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1929 stats.n_stats = n_stats;
1930 data = vzalloc(n_stats * sizeof(u64));
1931 if (n_stats && !data)
1934 ops->get_ethtool_stats(dev, &stats, data);
1937 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1939 useraddr += sizeof(stats);
1940 if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
1949 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
1951 struct ethtool_stats stats;
1952 struct phy_device *phydev = dev->phydev;
1959 n_stats = phy_get_sset_count(phydev);
1962 if (n_stats > S32_MAX / sizeof(u64))
1964 WARN_ON_ONCE(!n_stats);
1966 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1969 stats.n_stats = n_stats;
1970 data = vzalloc(n_stats * sizeof(u64));
1971 if (n_stats && !data)
1974 mutex_lock(&phydev->lock);
1975 phydev->drv->get_stats(phydev, &stats, data);
1976 mutex_unlock(&phydev->lock);
1979 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1981 useraddr += sizeof(stats);
1982 if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
1991 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
1993 struct ethtool_perm_addr epaddr;
1995 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
1998 if (epaddr.size < dev->addr_len)
2000 epaddr.size = dev->addr_len;
2002 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
2004 useraddr += sizeof(epaddr);
2005 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
2010 static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
2011 u32 cmd, u32 (*actor)(struct net_device *))
2013 struct ethtool_value edata = { .cmd = cmd };
2018 edata.data = actor(dev);
2020 if (copy_to_user(useraddr, &edata, sizeof(edata)))
2025 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
2026 void (*actor)(struct net_device *, u32))
2028 struct ethtool_value edata;
2033 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2036 actor(dev, edata.data);
2040 static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
2041 int (*actor)(struct net_device *, u32))
2043 struct ethtool_value edata;
2048 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2051 return actor(dev, edata.data);
2054 static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
2055 char __user *useraddr)
2057 struct ethtool_flash efl;
2059 if (copy_from_user(&efl, useraddr, sizeof(efl)))
2062 if (!dev->ethtool_ops->flash_device)
2065 efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
2067 return dev->ethtool_ops->flash_device(dev, &efl);
2070 static int ethtool_set_dump(struct net_device *dev,
2071 void __user *useraddr)
2073 struct ethtool_dump dump;
2075 if (!dev->ethtool_ops->set_dump)
2078 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2081 return dev->ethtool_ops->set_dump(dev, &dump);
2084 static int ethtool_get_dump_flag(struct net_device *dev,
2085 void __user *useraddr)
2088 struct ethtool_dump dump;
2089 const struct ethtool_ops *ops = dev->ethtool_ops;
2091 if (!ops->get_dump_flag)
2094 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2097 ret = ops->get_dump_flag(dev, &dump);
2101 if (copy_to_user(useraddr, &dump, sizeof(dump)))
2106 static int ethtool_get_dump_data(struct net_device *dev,
2107 void __user *useraddr)
2111 struct ethtool_dump dump, tmp;
2112 const struct ethtool_ops *ops = dev->ethtool_ops;
2115 if (!ops->get_dump_data || !ops->get_dump_flag)
2118 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2121 memset(&tmp, 0, sizeof(tmp));
2122 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
2123 ret = ops->get_dump_flag(dev, &tmp);
2127 len = min(tmp.len, dump.len);
2131 /* Don't ever let the driver think there's more space available
2132 * than it requested with .get_dump_flag().
2136 /* Always allocate enough space to hold the whole thing so that the
2137 * driver does not need to check the length and bother with partial
2140 data = vzalloc(tmp.len);
2143 ret = ops->get_dump_data(dev, &dump, data);
2147 /* There are two sane possibilities:
2148 * 1. The driver's .get_dump_data() does not touch dump.len.
2149 * 2. Or it may set dump.len to how much it really writes, which
2150 * should be tmp.len (or len if it can do a partial dump).
2151 * In any case respond to userspace with the actual length of data
2154 WARN_ON(dump.len != len && dump.len != tmp.len);
2157 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
2161 useraddr += offsetof(struct ethtool_dump, data);
2162 if (copy_to_user(useraddr, data, len))
2169 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
2172 struct ethtool_ts_info info;
2173 const struct ethtool_ops *ops = dev->ethtool_ops;
2174 struct phy_device *phydev = dev->phydev;
2176 memset(&info, 0, sizeof(info));
2177 info.cmd = ETHTOOL_GET_TS_INFO;
2179 if (phydev && phydev->drv && phydev->drv->ts_info) {
2180 err = phydev->drv->ts_info(phydev, &info);
2181 } else if (ops->get_ts_info) {
2182 err = ops->get_ts_info(dev, &info);
2184 info.so_timestamping =
2185 SOF_TIMESTAMPING_RX_SOFTWARE |
2186 SOF_TIMESTAMPING_SOFTWARE;
2187 info.phc_index = -1;
2193 if (copy_to_user(useraddr, &info, sizeof(info)))
2199 static int __ethtool_get_module_info(struct net_device *dev,
2200 struct ethtool_modinfo *modinfo)
2202 const struct ethtool_ops *ops = dev->ethtool_ops;
2203 struct phy_device *phydev = dev->phydev;
2205 if (phydev && phydev->drv && phydev->drv->module_info)
2206 return phydev->drv->module_info(phydev, modinfo);
2208 if (ops->get_module_info)
2209 return ops->get_module_info(dev, modinfo);
2214 static int ethtool_get_module_info(struct net_device *dev,
2215 void __user *useraddr)
2218 struct ethtool_modinfo modinfo;
2220 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
2223 ret = __ethtool_get_module_info(dev, &modinfo);
2227 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
2233 static int __ethtool_get_module_eeprom(struct net_device *dev,
2234 struct ethtool_eeprom *ee, u8 *data)
2236 const struct ethtool_ops *ops = dev->ethtool_ops;
2237 struct phy_device *phydev = dev->phydev;
2239 if (phydev && phydev->drv && phydev->drv->module_eeprom)
2240 return phydev->drv->module_eeprom(phydev, ee, data);
2242 if (ops->get_module_eeprom)
2243 return ops->get_module_eeprom(dev, ee, data);
2248 static int ethtool_get_module_eeprom(struct net_device *dev,
2249 void __user *useraddr)
2252 struct ethtool_modinfo modinfo;
2254 ret = __ethtool_get_module_info(dev, &modinfo);
2258 return ethtool_get_any_eeprom(dev, useraddr,
2259 __ethtool_get_module_eeprom,
2260 modinfo.eeprom_len);
2263 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna)
2266 case ETHTOOL_RX_COPYBREAK:
2267 case ETHTOOL_TX_COPYBREAK:
2268 if (tuna->len != sizeof(u32) ||
2269 tuna->type_id != ETHTOOL_TUNABLE_U32)
2279 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr)
2282 struct ethtool_tunable tuna;
2283 const struct ethtool_ops *ops = dev->ethtool_ops;
2286 if (!ops->get_tunable)
2288 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2290 ret = ethtool_tunable_valid(&tuna);
2293 data = kmalloc(tuna.len, GFP_USER);
2296 ret = ops->get_tunable(dev, &tuna, data);
2299 useraddr += sizeof(tuna);
2301 if (copy_to_user(useraddr, data, tuna.len))
2310 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr)
2313 struct ethtool_tunable tuna;
2314 const struct ethtool_ops *ops = dev->ethtool_ops;
2317 if (!ops->set_tunable)
2319 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2321 ret = ethtool_tunable_valid(&tuna);
2324 useraddr += sizeof(tuna);
2325 data = memdup_user(useraddr, tuna.len);
2327 return PTR_ERR(data);
2328 ret = ops->set_tunable(dev, &tuna, data);
2334 static int ethtool_get_per_queue_coalesce(struct net_device *dev,
2335 void __user *useraddr,
2336 struct ethtool_per_queue_op *per_queue_opt)
2340 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2342 if (!dev->ethtool_ops->get_per_queue_coalesce)
2345 useraddr += sizeof(*per_queue_opt);
2347 bitmap_from_u32array(queue_mask,
2349 per_queue_opt->queue_mask,
2350 DIV_ROUND_UP(MAX_NUM_QUEUE, 32));
2352 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2353 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
2355 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce);
2358 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
2360 useraddr += sizeof(coalesce);
2366 static int ethtool_set_per_queue_coalesce(struct net_device *dev,
2367 void __user *useraddr,
2368 struct ethtool_per_queue_op *per_queue_opt)
2373 struct ethtool_coalesce *backup = NULL, *tmp = NULL;
2374 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2376 if ((!dev->ethtool_ops->set_per_queue_coalesce) ||
2377 (!dev->ethtool_ops->get_per_queue_coalesce))
2380 useraddr += sizeof(*per_queue_opt);
2382 bitmap_from_u32array(queue_mask,
2384 per_queue_opt->queue_mask,
2385 DIV_ROUND_UP(MAX_NUM_QUEUE, 32));
2386 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE);
2387 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL);
2391 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2392 struct ethtool_coalesce coalesce;
2394 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp);
2400 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) {
2405 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce);
2409 useraddr += sizeof(coalesce);
2415 for_each_set_bit(i, queue_mask, bit) {
2416 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp);
2425 static int ethtool_set_per_queue(struct net_device *dev, void __user *useraddr)
2427 struct ethtool_per_queue_op per_queue_opt;
2429 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt)))
2432 switch (per_queue_opt.sub_command) {
2433 case ETHTOOL_GCOALESCE:
2434 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt);
2435 case ETHTOOL_SCOALESCE:
2436 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt);
2442 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna)
2445 case ETHTOOL_PHY_DOWNSHIFT:
2446 if (tuna->len != sizeof(u8) ||
2447 tuna->type_id != ETHTOOL_TUNABLE_U8)
2457 static int get_phy_tunable(struct net_device *dev, void __user *useraddr)
2460 struct ethtool_tunable tuna;
2461 struct phy_device *phydev = dev->phydev;
2464 if (!(phydev && phydev->drv && phydev->drv->get_tunable))
2467 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2469 ret = ethtool_phy_tunable_valid(&tuna);
2472 data = kmalloc(tuna.len, GFP_USER);
2475 mutex_lock(&phydev->lock);
2476 ret = phydev->drv->get_tunable(phydev, &tuna, data);
2477 mutex_unlock(&phydev->lock);
2480 useraddr += sizeof(tuna);
2482 if (copy_to_user(useraddr, data, tuna.len))
2491 static int set_phy_tunable(struct net_device *dev, void __user *useraddr)
2494 struct ethtool_tunable tuna;
2495 struct phy_device *phydev = dev->phydev;
2498 if (!(phydev && phydev->drv && phydev->drv->set_tunable))
2500 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2502 ret = ethtool_phy_tunable_valid(&tuna);
2505 useraddr += sizeof(tuna);
2506 data = memdup_user(useraddr, tuna.len);
2508 return PTR_ERR(data);
2509 mutex_lock(&phydev->lock);
2510 ret = phydev->drv->set_tunable(phydev, &tuna, data);
2511 mutex_unlock(&phydev->lock);
2517 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr)
2519 struct ethtool_fecparam fecparam = { ETHTOOL_GFECPARAM };
2521 if (!dev->ethtool_ops->get_fecparam)
2524 dev->ethtool_ops->get_fecparam(dev, &fecparam);
2526 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam)))
2531 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr)
2533 struct ethtool_fecparam fecparam;
2535 if (!dev->ethtool_ops->set_fecparam)
2538 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam)))
2541 return dev->ethtool_ops->set_fecparam(dev, &fecparam);
2544 /* The main entry point in this file. Called from net/core/dev_ioctl.c */
2546 int dev_ethtool(struct net *net, struct ifreq *ifr)
2548 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
2549 void __user *useraddr = ifr->ifr_data;
2550 u32 ethcmd, sub_cmd;
2552 netdev_features_t old_features;
2554 if (!dev || !netif_device_present(dev))
2557 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd)))
2560 if (ethcmd == ETHTOOL_PERQUEUE) {
2561 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd)))
2566 /* Allow some commands to be done by anyone */
2569 case ETHTOOL_GDRVINFO:
2570 case ETHTOOL_GMSGLVL:
2572 case ETHTOOL_GCOALESCE:
2573 case ETHTOOL_GRINGPARAM:
2574 case ETHTOOL_GPAUSEPARAM:
2575 case ETHTOOL_GRXCSUM:
2576 case ETHTOOL_GTXCSUM:
2578 case ETHTOOL_GSSET_INFO:
2579 case ETHTOOL_GSTRINGS:
2580 case ETHTOOL_GSTATS:
2581 case ETHTOOL_GPHYSTATS:
2583 case ETHTOOL_GPERMADDR:
2586 case ETHTOOL_GFLAGS:
2587 case ETHTOOL_GPFLAGS:
2589 case ETHTOOL_GRXRINGS:
2590 case ETHTOOL_GRXCLSRLCNT:
2591 case ETHTOOL_GRXCLSRULE:
2592 case ETHTOOL_GRXCLSRLALL:
2593 case ETHTOOL_GRXFHINDIR:
2595 case ETHTOOL_GFEATURES:
2596 case ETHTOOL_GCHANNELS:
2597 case ETHTOOL_GET_TS_INFO:
2599 case ETHTOOL_GTUNABLE:
2600 case ETHTOOL_PHY_GTUNABLE:
2601 case ETHTOOL_GLINKSETTINGS:
2602 case ETHTOOL_GFECPARAM:
2605 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
2609 if (dev->ethtool_ops->begin) {
2610 rc = dev->ethtool_ops->begin(dev);
2614 old_features = dev->features;
2618 rc = ethtool_get_settings(dev, useraddr);
2621 rc = ethtool_set_settings(dev, useraddr);
2623 case ETHTOOL_GDRVINFO:
2624 rc = ethtool_get_drvinfo(dev, useraddr);
2627 rc = ethtool_get_regs(dev, useraddr);
2630 rc = ethtool_get_wol(dev, useraddr);
2633 rc = ethtool_set_wol(dev, useraddr);
2635 case ETHTOOL_GMSGLVL:
2636 rc = ethtool_get_value(dev, useraddr, ethcmd,
2637 dev->ethtool_ops->get_msglevel);
2639 case ETHTOOL_SMSGLVL:
2640 rc = ethtool_set_value_void(dev, useraddr,
2641 dev->ethtool_ops->set_msglevel);
2644 rc = ethtool_get_eee(dev, useraddr);
2647 rc = ethtool_set_eee(dev, useraddr);
2649 case ETHTOOL_NWAY_RST:
2650 rc = ethtool_nway_reset(dev);
2653 rc = ethtool_get_link(dev, useraddr);
2655 case ETHTOOL_GEEPROM:
2656 rc = ethtool_get_eeprom(dev, useraddr);
2658 case ETHTOOL_SEEPROM:
2659 rc = ethtool_set_eeprom(dev, useraddr);
2661 case ETHTOOL_GCOALESCE:
2662 rc = ethtool_get_coalesce(dev, useraddr);
2664 case ETHTOOL_SCOALESCE:
2665 rc = ethtool_set_coalesce(dev, useraddr);
2667 case ETHTOOL_GRINGPARAM:
2668 rc = ethtool_get_ringparam(dev, useraddr);
2670 case ETHTOOL_SRINGPARAM:
2671 rc = ethtool_set_ringparam(dev, useraddr);
2673 case ETHTOOL_GPAUSEPARAM:
2674 rc = ethtool_get_pauseparam(dev, useraddr);
2676 case ETHTOOL_SPAUSEPARAM:
2677 rc = ethtool_set_pauseparam(dev, useraddr);
2680 rc = ethtool_self_test(dev, useraddr);
2682 case ETHTOOL_GSTRINGS:
2683 rc = ethtool_get_strings(dev, useraddr);
2685 case ETHTOOL_PHYS_ID:
2686 rc = ethtool_phys_id(dev, useraddr);
2688 case ETHTOOL_GSTATS:
2689 rc = ethtool_get_stats(dev, useraddr);
2691 case ETHTOOL_GPERMADDR:
2692 rc = ethtool_get_perm_addr(dev, useraddr);
2694 case ETHTOOL_GFLAGS:
2695 rc = ethtool_get_value(dev, useraddr, ethcmd,
2696 __ethtool_get_flags);
2698 case ETHTOOL_SFLAGS:
2699 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
2701 case ETHTOOL_GPFLAGS:
2702 rc = ethtool_get_value(dev, useraddr, ethcmd,
2703 dev->ethtool_ops->get_priv_flags);
2705 case ETHTOOL_SPFLAGS:
2706 rc = ethtool_set_value(dev, useraddr,
2707 dev->ethtool_ops->set_priv_flags);
2710 case ETHTOOL_GRXRINGS:
2711 case ETHTOOL_GRXCLSRLCNT:
2712 case ETHTOOL_GRXCLSRULE:
2713 case ETHTOOL_GRXCLSRLALL:
2714 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
2717 case ETHTOOL_SRXCLSRLDEL:
2718 case ETHTOOL_SRXCLSRLINS:
2719 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
2721 case ETHTOOL_FLASHDEV:
2722 rc = ethtool_flash_device(dev, useraddr);
2725 rc = ethtool_reset(dev, useraddr);
2727 case ETHTOOL_GSSET_INFO:
2728 rc = ethtool_get_sset_info(dev, useraddr);
2730 case ETHTOOL_GRXFHINDIR:
2731 rc = ethtool_get_rxfh_indir(dev, useraddr);
2733 case ETHTOOL_SRXFHINDIR:
2734 rc = ethtool_set_rxfh_indir(dev, useraddr);
2737 rc = ethtool_get_rxfh(dev, useraddr);
2740 rc = ethtool_set_rxfh(dev, useraddr);
2742 case ETHTOOL_GFEATURES:
2743 rc = ethtool_get_features(dev, useraddr);
2745 case ETHTOOL_SFEATURES:
2746 rc = ethtool_set_features(dev, useraddr);
2748 case ETHTOOL_GTXCSUM:
2749 case ETHTOOL_GRXCSUM:
2754 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
2756 case ETHTOOL_STXCSUM:
2757 case ETHTOOL_SRXCSUM:
2762 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
2764 case ETHTOOL_GCHANNELS:
2765 rc = ethtool_get_channels(dev, useraddr);
2767 case ETHTOOL_SCHANNELS:
2768 rc = ethtool_set_channels(dev, useraddr);
2770 case ETHTOOL_SET_DUMP:
2771 rc = ethtool_set_dump(dev, useraddr);
2773 case ETHTOOL_GET_DUMP_FLAG:
2774 rc = ethtool_get_dump_flag(dev, useraddr);
2776 case ETHTOOL_GET_DUMP_DATA:
2777 rc = ethtool_get_dump_data(dev, useraddr);
2779 case ETHTOOL_GET_TS_INFO:
2780 rc = ethtool_get_ts_info(dev, useraddr);
2782 case ETHTOOL_GMODULEINFO:
2783 rc = ethtool_get_module_info(dev, useraddr);
2785 case ETHTOOL_GMODULEEEPROM:
2786 rc = ethtool_get_module_eeprom(dev, useraddr);
2788 case ETHTOOL_GTUNABLE:
2789 rc = ethtool_get_tunable(dev, useraddr);
2791 case ETHTOOL_STUNABLE:
2792 rc = ethtool_set_tunable(dev, useraddr);
2794 case ETHTOOL_GPHYSTATS:
2795 rc = ethtool_get_phy_stats(dev, useraddr);
2797 case ETHTOOL_PERQUEUE:
2798 rc = ethtool_set_per_queue(dev, useraddr);
2800 case ETHTOOL_GLINKSETTINGS:
2801 rc = ethtool_get_link_ksettings(dev, useraddr);
2803 case ETHTOOL_SLINKSETTINGS:
2804 rc = ethtool_set_link_ksettings(dev, useraddr);
2806 case ETHTOOL_PHY_GTUNABLE:
2807 rc = get_phy_tunable(dev, useraddr);
2809 case ETHTOOL_PHY_STUNABLE:
2810 rc = set_phy_tunable(dev, useraddr);
2812 case ETHTOOL_GFECPARAM:
2813 rc = ethtool_get_fecparam(dev, useraddr);
2815 case ETHTOOL_SFECPARAM:
2816 rc = ethtool_set_fecparam(dev, useraddr);
2822 if (dev->ethtool_ops->complete)
2823 dev->ethtool_ops->complete(dev);
2825 if (old_features != dev->features)
2826 netdev_features_change(dev);