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 /* Given two link masks, AND them together and save the result in dst. */
407 void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst,
408 struct ethtool_link_ksettings *src)
410 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS);
411 unsigned int idx = 0;
413 for (; idx < size; idx++) {
414 dst->link_modes.supported[idx] &=
415 src->link_modes.supported[idx];
416 dst->link_modes.advertising[idx] &=
417 src->link_modes.advertising[idx];
420 EXPORT_SYMBOL(ethtool_intersect_link_masks);
422 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
425 bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS);
428 EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode);
430 /* return false if src had higher bits set. lower bits always updated. */
431 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
432 const unsigned long *src)
436 /* TODO: following test will soon always be true */
437 if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) {
438 __ETHTOOL_DECLARE_LINK_MODE_MASK(ext);
440 bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
441 bitmap_fill(ext, 32);
442 bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
443 if (bitmap_intersects(ext, src,
444 __ETHTOOL_LINK_MODE_MASK_NBITS)) {
445 /* src mask goes beyond bit 31 */
449 *legacy_u32 = src[0];
452 EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32);
454 /* return false if legacy contained non-0 deprecated fields
455 * maxtxpkt/maxrxpkt. rest of ksettings always updated
458 convert_legacy_settings_to_link_ksettings(
459 struct ethtool_link_ksettings *link_ksettings,
460 const struct ethtool_cmd *legacy_settings)
464 memset(link_ksettings, 0, sizeof(*link_ksettings));
466 /* This is used to tell users that driver is still using these
467 * deprecated legacy fields, and they should not use
468 * %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS
470 if (legacy_settings->maxtxpkt ||
471 legacy_settings->maxrxpkt)
474 ethtool_convert_legacy_u32_to_link_mode(
475 link_ksettings->link_modes.supported,
476 legacy_settings->supported);
477 ethtool_convert_legacy_u32_to_link_mode(
478 link_ksettings->link_modes.advertising,
479 legacy_settings->advertising);
480 ethtool_convert_legacy_u32_to_link_mode(
481 link_ksettings->link_modes.lp_advertising,
482 legacy_settings->lp_advertising);
483 link_ksettings->base.speed
484 = ethtool_cmd_speed(legacy_settings);
485 link_ksettings->base.duplex
486 = legacy_settings->duplex;
487 link_ksettings->base.port
488 = legacy_settings->port;
489 link_ksettings->base.phy_address
490 = legacy_settings->phy_address;
491 link_ksettings->base.autoneg
492 = legacy_settings->autoneg;
493 link_ksettings->base.mdio_support
494 = legacy_settings->mdio_support;
495 link_ksettings->base.eth_tp_mdix
496 = legacy_settings->eth_tp_mdix;
497 link_ksettings->base.eth_tp_mdix_ctrl
498 = legacy_settings->eth_tp_mdix_ctrl;
502 /* return false if ksettings link modes had higher bits
503 * set. legacy_settings always updated (best effort)
506 convert_link_ksettings_to_legacy_settings(
507 struct ethtool_cmd *legacy_settings,
508 const struct ethtool_link_ksettings *link_ksettings)
512 memset(legacy_settings, 0, sizeof(*legacy_settings));
513 /* this also clears the deprecated fields in legacy structure:
519 retval &= ethtool_convert_link_mode_to_legacy_u32(
520 &legacy_settings->supported,
521 link_ksettings->link_modes.supported);
522 retval &= ethtool_convert_link_mode_to_legacy_u32(
523 &legacy_settings->advertising,
524 link_ksettings->link_modes.advertising);
525 retval &= ethtool_convert_link_mode_to_legacy_u32(
526 &legacy_settings->lp_advertising,
527 link_ksettings->link_modes.lp_advertising);
528 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed);
529 legacy_settings->duplex
530 = link_ksettings->base.duplex;
531 legacy_settings->port
532 = link_ksettings->base.port;
533 legacy_settings->phy_address
534 = link_ksettings->base.phy_address;
535 legacy_settings->autoneg
536 = link_ksettings->base.autoneg;
537 legacy_settings->mdio_support
538 = link_ksettings->base.mdio_support;
539 legacy_settings->eth_tp_mdix
540 = link_ksettings->base.eth_tp_mdix;
541 legacy_settings->eth_tp_mdix_ctrl
542 = link_ksettings->base.eth_tp_mdix_ctrl;
543 legacy_settings->transceiver
544 = link_ksettings->base.transceiver;
548 /* number of 32-bit words to store the user's link mode bitmaps */
549 #define __ETHTOOL_LINK_MODE_MASK_NU32 \
550 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
552 /* layout of the struct passed from/to userland */
553 struct ethtool_link_usettings {
554 struct ethtool_link_settings base;
556 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32];
557 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
558 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
562 /* Internal kernel helper to query a device ethtool_link_settings.
564 * Backward compatibility note: for compatibility with legacy drivers
565 * that implement only the ethtool_cmd API, this has to work with both
566 * drivers implementing get_link_ksettings API and drivers
567 * implementing get_settings API. When drivers implement get_settings
568 * and report ethtool_cmd deprecated fields
569 * (transceiver/maxrxpkt/maxtxpkt), these fields are silently ignored
570 * because the resulting struct ethtool_link_settings does not report them.
572 int __ethtool_get_link_ksettings(struct net_device *dev,
573 struct ethtool_link_ksettings *link_ksettings)
576 struct ethtool_cmd cmd;
580 if (dev->ethtool_ops->get_link_ksettings) {
581 memset(link_ksettings, 0, sizeof(*link_ksettings));
582 return dev->ethtool_ops->get_link_ksettings(dev,
586 /* driver doesn't support %ethtool_link_ksettings API. revert to
587 * legacy %ethtool_cmd API, unless it's not supported either.
588 * TODO: remove when ethtool_ops::get_settings disappears internally
590 if (!dev->ethtool_ops->get_settings)
593 memset(&cmd, 0, sizeof(cmd));
594 cmd.cmd = ETHTOOL_GSET;
595 err = dev->ethtool_ops->get_settings(dev, &cmd);
599 /* we ignore deprecated fields transceiver/maxrxpkt/maxtxpkt
601 convert_legacy_settings_to_link_ksettings(link_ksettings, &cmd);
604 EXPORT_SYMBOL(__ethtool_get_link_ksettings);
606 /* convert ethtool_link_usettings in user space to a kernel internal
607 * ethtool_link_ksettings. return 0 on success, errno on error.
609 static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to,
610 const void __user *from)
612 struct ethtool_link_usettings link_usettings;
614 if (copy_from_user(&link_usettings, from, sizeof(link_usettings)))
617 memcpy(&to->base, &link_usettings.base, sizeof(to->base));
618 bitmap_from_u32array(to->link_modes.supported,
619 __ETHTOOL_LINK_MODE_MASK_NBITS,
620 link_usettings.link_modes.supported,
621 __ETHTOOL_LINK_MODE_MASK_NU32);
622 bitmap_from_u32array(to->link_modes.advertising,
623 __ETHTOOL_LINK_MODE_MASK_NBITS,
624 link_usettings.link_modes.advertising,
625 __ETHTOOL_LINK_MODE_MASK_NU32);
626 bitmap_from_u32array(to->link_modes.lp_advertising,
627 __ETHTOOL_LINK_MODE_MASK_NBITS,
628 link_usettings.link_modes.lp_advertising,
629 __ETHTOOL_LINK_MODE_MASK_NU32);
634 /* convert a kernel internal ethtool_link_ksettings to
635 * ethtool_link_usettings in user space. return 0 on success, errno on
639 store_link_ksettings_for_user(void __user *to,
640 const struct ethtool_link_ksettings *from)
642 struct ethtool_link_usettings link_usettings;
644 memcpy(&link_usettings.base, &from->base, sizeof(link_usettings));
645 bitmap_to_u32array(link_usettings.link_modes.supported,
646 __ETHTOOL_LINK_MODE_MASK_NU32,
647 from->link_modes.supported,
648 __ETHTOOL_LINK_MODE_MASK_NBITS);
649 bitmap_to_u32array(link_usettings.link_modes.advertising,
650 __ETHTOOL_LINK_MODE_MASK_NU32,
651 from->link_modes.advertising,
652 __ETHTOOL_LINK_MODE_MASK_NBITS);
653 bitmap_to_u32array(link_usettings.link_modes.lp_advertising,
654 __ETHTOOL_LINK_MODE_MASK_NU32,
655 from->link_modes.lp_advertising,
656 __ETHTOOL_LINK_MODE_MASK_NBITS);
658 if (copy_to_user(to, &link_usettings, sizeof(link_usettings)))
664 /* Query device for its ethtool_link_settings.
666 * Backward compatibility note: this function must fail when driver
667 * does not implement ethtool::get_link_ksettings, even if legacy
668 * ethtool_ops::get_settings is implemented. This tells new versions
669 * of ethtool that they should use the legacy API %ETHTOOL_GSET for
670 * this driver, so that they can correctly access the ethtool_cmd
671 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
672 * implements ethtool_ops::get_settings anymore.
674 static int ethtool_get_link_ksettings(struct net_device *dev,
675 void __user *useraddr)
678 struct ethtool_link_ksettings link_ksettings;
682 if (!dev->ethtool_ops->get_link_ksettings)
685 /* handle bitmap nbits handshake */
686 if (copy_from_user(&link_ksettings.base, useraddr,
687 sizeof(link_ksettings.base)))
690 if (__ETHTOOL_LINK_MODE_MASK_NU32
691 != link_ksettings.base.link_mode_masks_nwords) {
692 /* wrong link mode nbits requested */
693 memset(&link_ksettings, 0, sizeof(link_ksettings));
694 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
695 /* send back number of words required as negative val */
696 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX,
697 "need too many bits for link modes!");
698 link_ksettings.base.link_mode_masks_nwords
699 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32);
701 /* copy the base fields back to user, not the link
704 if (copy_to_user(useraddr, &link_ksettings.base,
705 sizeof(link_ksettings.base)))
711 /* handshake successful: user/kernel agree on
712 * link_mode_masks_nwords
715 memset(&link_ksettings, 0, sizeof(link_ksettings));
716 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
720 /* make sure we tell the right values to user */
721 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
722 link_ksettings.base.link_mode_masks_nwords
723 = __ETHTOOL_LINK_MODE_MASK_NU32;
725 return store_link_ksettings_for_user(useraddr, &link_ksettings);
728 /* Update device ethtool_link_settings.
730 * Backward compatibility note: this function must fail when driver
731 * does not implement ethtool::set_link_ksettings, even if legacy
732 * ethtool_ops::set_settings is implemented. This tells new versions
733 * of ethtool that they should use the legacy API %ETHTOOL_SSET for
734 * this driver, so that they can correctly update the ethtool_cmd
735 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
736 * implements ethtool_ops::get_settings anymore.
738 static int ethtool_set_link_ksettings(struct net_device *dev,
739 void __user *useraddr)
742 struct ethtool_link_ksettings link_ksettings;
746 if (!dev->ethtool_ops->set_link_ksettings)
749 /* make sure nbits field has expected value */
750 if (copy_from_user(&link_ksettings.base, useraddr,
751 sizeof(link_ksettings.base)))
754 if (__ETHTOOL_LINK_MODE_MASK_NU32
755 != link_ksettings.base.link_mode_masks_nwords)
758 /* copy the whole structure, now that we know it has expected
761 err = load_link_ksettings_from_user(&link_ksettings, useraddr);
765 /* re-check nwords field, just in case */
766 if (__ETHTOOL_LINK_MODE_MASK_NU32
767 != link_ksettings.base.link_mode_masks_nwords)
770 return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
773 /* Query device for its ethtool_cmd settings.
775 * Backward compatibility note: for compatibility with legacy ethtool,
776 * this has to work with both drivers implementing get_link_ksettings
777 * API and drivers implementing get_settings API. When drivers
778 * implement get_link_ksettings and report higher link mode bits, a
779 * kernel warning is logged once (with name of 1st driver/device) to
780 * recommend user to upgrade ethtool, but the command is successful
781 * (only the lower link mode bits reported back to user).
783 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
785 struct ethtool_cmd cmd;
789 if (dev->ethtool_ops->get_link_ksettings) {
790 /* First, use link_ksettings API if it is supported */
792 struct ethtool_link_ksettings link_ksettings;
794 memset(&link_ksettings, 0, sizeof(link_ksettings));
795 err = dev->ethtool_ops->get_link_ksettings(dev,
799 convert_link_ksettings_to_legacy_settings(&cmd,
802 /* send a sensible cmd tag back to user */
803 cmd.cmd = ETHTOOL_GSET;
805 /* driver doesn't support %ethtool_link_ksettings
806 * API. revert to legacy %ethtool_cmd API, unless it's
807 * not supported either.
811 if (!dev->ethtool_ops->get_settings)
814 memset(&cmd, 0, sizeof(cmd));
815 cmd.cmd = ETHTOOL_GSET;
816 err = dev->ethtool_ops->get_settings(dev, &cmd);
821 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
827 /* Update device link settings with given ethtool_cmd.
829 * Backward compatibility note: for compatibility with legacy ethtool,
830 * this has to work with both drivers implementing set_link_ksettings
831 * API and drivers implementing set_settings API. When drivers
832 * implement set_link_ksettings and user's request updates deprecated
833 * ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
834 * warning is logged once (with name of 1st driver/device) to
835 * recommend user to upgrade ethtool, and the request is rejected.
837 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
839 struct ethtool_cmd cmd;
843 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
846 /* first, try new %ethtool_link_ksettings API. */
847 if (dev->ethtool_ops->set_link_ksettings) {
848 struct ethtool_link_ksettings link_ksettings;
850 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings,
854 link_ksettings.base.cmd = ETHTOOL_SLINKSETTINGS;
855 link_ksettings.base.link_mode_masks_nwords
856 = __ETHTOOL_LINK_MODE_MASK_NU32;
857 return dev->ethtool_ops->set_link_ksettings(dev,
861 /* legacy %ethtool_cmd API */
863 /* TODO: return -EOPNOTSUPP when ethtool_ops::get_settings
864 * disappears internally
867 if (!dev->ethtool_ops->set_settings)
870 return dev->ethtool_ops->set_settings(dev, &cmd);
873 static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
874 void __user *useraddr)
876 struct ethtool_drvinfo info;
877 const struct ethtool_ops *ops = dev->ethtool_ops;
879 memset(&info, 0, sizeof(info));
880 info.cmd = ETHTOOL_GDRVINFO;
881 if (ops->get_drvinfo) {
882 ops->get_drvinfo(dev, &info);
883 } else if (dev->dev.parent && dev->dev.parent->driver) {
884 strlcpy(info.bus_info, dev_name(dev->dev.parent),
885 sizeof(info.bus_info));
886 strlcpy(info.driver, dev->dev.parent->driver->name,
887 sizeof(info.driver));
893 * this method of obtaining string set info is deprecated;
894 * Use ETHTOOL_GSSET_INFO instead.
896 if (ops->get_sset_count) {
899 rc = ops->get_sset_count(dev, ETH_SS_TEST);
901 info.testinfo_len = rc;
902 rc = ops->get_sset_count(dev, ETH_SS_STATS);
905 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
907 info.n_priv_flags = rc;
909 if (ops->get_regs_len)
910 info.regdump_len = ops->get_regs_len(dev);
911 if (ops->get_eeprom_len)
912 info.eedump_len = ops->get_eeprom_len(dev);
914 if (copy_to_user(useraddr, &info, sizeof(info)))
919 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
920 void __user *useraddr)
922 struct ethtool_sset_info info;
924 int i, idx = 0, n_bits = 0, ret, rc;
925 u32 *info_buf = NULL;
927 if (copy_from_user(&info, useraddr, sizeof(info)))
930 /* store copy of mask, because we zero struct later on */
931 sset_mask = info.sset_mask;
935 /* calculate size of return buffer */
936 n_bits = hweight64(sset_mask);
938 memset(&info, 0, sizeof(info));
939 info.cmd = ETHTOOL_GSSET_INFO;
941 info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
946 * fill return buffer based on input bitmask and successful
947 * get_sset_count return
949 for (i = 0; i < 64; i++) {
950 if (!(sset_mask & (1ULL << i)))
953 rc = __ethtool_get_sset_count(dev, i);
955 info.sset_mask |= (1ULL << i);
956 info_buf[idx++] = rc;
961 if (copy_to_user(useraddr, &info, sizeof(info)))
964 useraddr += offsetof(struct ethtool_sset_info, data);
965 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
975 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
976 u32 cmd, void __user *useraddr)
978 struct ethtool_rxnfc info;
979 size_t info_size = sizeof(info);
982 if (!dev->ethtool_ops->set_rxnfc)
985 /* struct ethtool_rxnfc was originally defined for
986 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
987 * members. User-space might still be using that
989 if (cmd == ETHTOOL_SRXFH)
990 info_size = (offsetof(struct ethtool_rxnfc, data) +
993 if (copy_from_user(&info, useraddr, info_size))
996 rc = dev->ethtool_ops->set_rxnfc(dev, &info);
1000 if (cmd == ETHTOOL_SRXCLSRLINS &&
1001 copy_to_user(useraddr, &info, info_size))
1007 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
1008 u32 cmd, void __user *useraddr)
1010 struct ethtool_rxnfc info;
1011 size_t info_size = sizeof(info);
1012 const struct ethtool_ops *ops = dev->ethtool_ops;
1014 void *rule_buf = NULL;
1016 if (!ops->get_rxnfc)
1019 /* struct ethtool_rxnfc was originally defined for
1020 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
1021 * members. User-space might still be using that
1023 if (cmd == ETHTOOL_GRXFH)
1024 info_size = (offsetof(struct ethtool_rxnfc, data) +
1027 if (copy_from_user(&info, useraddr, info_size))
1030 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
1031 if (info.rule_cnt > 0) {
1032 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
1033 rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
1040 ret = ops->get_rxnfc(dev, &info, rule_buf);
1045 if (copy_to_user(useraddr, &info, info_size))
1049 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
1050 if (copy_to_user(useraddr, rule_buf,
1051 info.rule_cnt * sizeof(u32)))
1062 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr,
1063 struct ethtool_rxnfc *rx_rings,
1068 if (copy_from_user(indir, useraddr, size * sizeof(indir[0])))
1071 /* Validate ring indices */
1072 for (i = 0; i < size; i++)
1073 if (indir[i] >= rx_rings->data)
1079 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly;
1081 void netdev_rss_key_fill(void *buffer, size_t len)
1083 BUG_ON(len > sizeof(netdev_rss_key));
1084 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key));
1085 memcpy(buffer, netdev_rss_key, len);
1087 EXPORT_SYMBOL(netdev_rss_key_fill);
1089 static int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max)
1091 u32 dev_size, current_max = 0;
1095 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1096 !dev->ethtool_ops->get_rxfh)
1098 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1102 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1106 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1111 current_max = max(current_max, indir[dev_size]);
1120 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
1121 void __user *useraddr)
1123 u32 user_size, dev_size;
1127 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1128 !dev->ethtool_ops->get_rxfh)
1130 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1134 if (copy_from_user(&user_size,
1135 useraddr + offsetof(struct ethtool_rxfh_indir, size),
1139 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
1140 &dev_size, sizeof(dev_size)))
1143 /* If the user buffer size is 0, this is just a query for the
1144 * device table size. Otherwise, if it's smaller than the
1145 * device table size it's an error.
1147 if (user_size < dev_size)
1148 return user_size == 0 ? 0 : -EINVAL;
1150 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1154 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1158 if (copy_to_user(useraddr +
1159 offsetof(struct ethtool_rxfh_indir, ring_index[0]),
1160 indir, dev_size * sizeof(indir[0])))
1168 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
1169 void __user *useraddr)
1171 struct ethtool_rxnfc rx_rings;
1172 u32 user_size, dev_size, i;
1174 const struct ethtool_ops *ops = dev->ethtool_ops;
1176 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]);
1178 if (!ops->get_rxfh_indir_size || !ops->set_rxfh ||
1182 dev_size = ops->get_rxfh_indir_size(dev);
1186 if (copy_from_user(&user_size,
1187 useraddr + offsetof(struct ethtool_rxfh_indir, size),
1191 if (user_size != 0 && user_size != dev_size)
1194 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1198 rx_rings.cmd = ETHTOOL_GRXRINGS;
1199 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1203 if (user_size == 0) {
1204 for (i = 0; i < dev_size; i++)
1205 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1207 ret = ethtool_copy_validate_indir(indir,
1208 useraddr + ringidx_offset,
1215 ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE);
1219 /* indicate whether rxfh was set to default */
1221 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1223 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1230 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
1231 void __user *useraddr)
1234 const struct ethtool_ops *ops = dev->ethtool_ops;
1235 u32 user_indir_size, user_key_size;
1236 u32 dev_indir_size = 0, dev_key_size = 0;
1237 struct ethtool_rxfh rxfh;
1248 if (ops->get_rxfh_indir_size)
1249 dev_indir_size = ops->get_rxfh_indir_size(dev);
1250 if (ops->get_rxfh_key_size)
1251 dev_key_size = ops->get_rxfh_key_size(dev);
1253 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
1255 user_indir_size = rxfh.indir_size;
1256 user_key_size = rxfh.key_size;
1258 /* Check that reserved fields are 0 for now */
1259 if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] ||
1260 rxfh.rsvd8[2] || rxfh.rsvd32)
1263 rxfh.indir_size = dev_indir_size;
1264 rxfh.key_size = dev_key_size;
1265 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh)))
1268 if ((user_indir_size && (user_indir_size != dev_indir_size)) ||
1269 (user_key_size && (user_key_size != dev_key_size)))
1272 indir_bytes = user_indir_size * sizeof(indir[0]);
1273 total_size = indir_bytes + user_key_size;
1274 rss_config = kzalloc(total_size, GFP_USER);
1278 if (user_indir_size)
1279 indir = (u32 *)rss_config;
1282 hkey = rss_config + indir_bytes;
1284 ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc);
1288 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc),
1289 &dev_hfunc, sizeof(rxfh.hfunc))) {
1291 } else if (copy_to_user(useraddr +
1292 offsetof(struct ethtool_rxfh, rss_config[0]),
1293 rss_config, total_size)) {
1302 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
1303 void __user *useraddr)
1306 const struct ethtool_ops *ops = dev->ethtool_ops;
1307 struct ethtool_rxnfc rx_rings;
1308 struct ethtool_rxfh rxfh;
1309 u32 dev_indir_size = 0, dev_key_size = 0, i;
1310 u32 *indir = NULL, indir_bytes = 0;
1313 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]);
1315 if (!ops->get_rxnfc || !ops->set_rxfh)
1318 if (ops->get_rxfh_indir_size)
1319 dev_indir_size = ops->get_rxfh_indir_size(dev);
1320 if (ops->get_rxfh_key_size)
1321 dev_key_size = ops->get_rxfh_key_size(dev);
1323 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
1326 /* Check that reserved fields are 0 for now */
1327 if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] ||
1328 rxfh.rsvd8[2] || rxfh.rsvd32)
1331 /* If either indir, hash key or function is valid, proceed further.
1332 * Must request at least one change: indir size, hash key or function.
1334 if ((rxfh.indir_size &&
1335 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE &&
1336 rxfh.indir_size != dev_indir_size) ||
1337 (rxfh.key_size && (rxfh.key_size != dev_key_size)) ||
1338 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE &&
1339 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE))
1342 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1343 indir_bytes = dev_indir_size * sizeof(indir[0]);
1345 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER);
1349 rx_rings.cmd = ETHTOOL_GRXRINGS;
1350 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1354 /* rxfh.indir_size == 0 means reset the indir table to default.
1355 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
1357 if (rxfh.indir_size &&
1358 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) {
1359 indir = (u32 *)rss_config;
1360 ret = ethtool_copy_validate_indir(indir,
1361 useraddr + rss_cfg_offset,
1366 } else if (rxfh.indir_size == 0) {
1367 indir = (u32 *)rss_config;
1368 for (i = 0; i < dev_indir_size; i++)
1369 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1372 if (rxfh.key_size) {
1373 hkey = rss_config + indir_bytes;
1374 if (copy_from_user(hkey,
1375 useraddr + rss_cfg_offset + indir_bytes,
1382 ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc);
1386 /* indicate whether rxfh was set to default */
1387 if (rxfh.indir_size == 0)
1388 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1389 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1390 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1397 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
1399 struct ethtool_regs regs;
1400 const struct ethtool_ops *ops = dev->ethtool_ops;
1404 if (!ops->get_regs || !ops->get_regs_len)
1407 if (copy_from_user(®s, useraddr, sizeof(regs)))
1410 reglen = ops->get_regs_len(dev);
1411 if (regs.len > reglen)
1416 regbuf = vzalloc(reglen);
1421 ops->get_regs(dev, ®s, regbuf);
1424 if (copy_to_user(useraddr, ®s, sizeof(regs)))
1426 useraddr += offsetof(struct ethtool_regs, data);
1427 if (regbuf && copy_to_user(useraddr, regbuf, regs.len))
1436 static int ethtool_reset(struct net_device *dev, char __user *useraddr)
1438 struct ethtool_value reset;
1441 if (!dev->ethtool_ops->reset)
1444 if (copy_from_user(&reset, useraddr, sizeof(reset)))
1447 ret = dev->ethtool_ops->reset(dev, &reset.data);
1451 if (copy_to_user(useraddr, &reset, sizeof(reset)))
1456 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
1458 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
1460 if (!dev->ethtool_ops->get_wol)
1463 dev->ethtool_ops->get_wol(dev, &wol);
1465 if (copy_to_user(useraddr, &wol, sizeof(wol)))
1470 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
1472 struct ethtool_wolinfo wol;
1474 if (!dev->ethtool_ops->set_wol)
1477 if (copy_from_user(&wol, useraddr, sizeof(wol)))
1480 return dev->ethtool_ops->set_wol(dev, &wol);
1483 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
1485 struct ethtool_eee edata;
1488 if (!dev->ethtool_ops->get_eee)
1491 memset(&edata, 0, sizeof(struct ethtool_eee));
1492 edata.cmd = ETHTOOL_GEEE;
1493 rc = dev->ethtool_ops->get_eee(dev, &edata);
1498 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1504 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
1506 struct ethtool_eee edata;
1508 if (!dev->ethtool_ops->set_eee)
1511 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1514 return dev->ethtool_ops->set_eee(dev, &edata);
1517 static int ethtool_nway_reset(struct net_device *dev)
1519 if (!dev->ethtool_ops->nway_reset)
1522 return dev->ethtool_ops->nway_reset(dev);
1525 static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
1527 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
1529 if (!dev->ethtool_ops->get_link)
1532 edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
1534 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1539 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
1540 int (*getter)(struct net_device *,
1541 struct ethtool_eeprom *, u8 *),
1544 struct ethtool_eeprom eeprom;
1545 void __user *userbuf = useraddr + sizeof(eeprom);
1546 u32 bytes_remaining;
1550 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1553 /* Check for wrap and zero */
1554 if (eeprom.offset + eeprom.len <= eeprom.offset)
1557 /* Check for exceeding total eeprom len */
1558 if (eeprom.offset + eeprom.len > total_len)
1561 data = kmalloc(PAGE_SIZE, GFP_USER);
1565 bytes_remaining = eeprom.len;
1566 while (bytes_remaining > 0) {
1567 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1569 ret = getter(dev, &eeprom, data);
1572 if (copy_to_user(userbuf, data, eeprom.len)) {
1576 userbuf += eeprom.len;
1577 eeprom.offset += eeprom.len;
1578 bytes_remaining -= eeprom.len;
1581 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
1582 eeprom.offset -= eeprom.len;
1583 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
1590 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
1592 const struct ethtool_ops *ops = dev->ethtool_ops;
1594 if (!ops->get_eeprom || !ops->get_eeprom_len ||
1595 !ops->get_eeprom_len(dev))
1598 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
1599 ops->get_eeprom_len(dev));
1602 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
1604 struct ethtool_eeprom eeprom;
1605 const struct ethtool_ops *ops = dev->ethtool_ops;
1606 void __user *userbuf = useraddr + sizeof(eeprom);
1607 u32 bytes_remaining;
1611 if (!ops->set_eeprom || !ops->get_eeprom_len ||
1612 !ops->get_eeprom_len(dev))
1615 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1618 /* Check for wrap and zero */
1619 if (eeprom.offset + eeprom.len <= eeprom.offset)
1622 /* Check for exceeding total eeprom len */
1623 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1626 data = kmalloc(PAGE_SIZE, GFP_USER);
1630 bytes_remaining = eeprom.len;
1631 while (bytes_remaining > 0) {
1632 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1634 if (copy_from_user(data, userbuf, eeprom.len)) {
1638 ret = ops->set_eeprom(dev, &eeprom, data);
1641 userbuf += eeprom.len;
1642 eeprom.offset += eeprom.len;
1643 bytes_remaining -= eeprom.len;
1650 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1651 void __user *useraddr)
1653 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1655 if (!dev->ethtool_ops->get_coalesce)
1658 dev->ethtool_ops->get_coalesce(dev, &coalesce);
1660 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1665 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1666 void __user *useraddr)
1668 struct ethtool_coalesce coalesce;
1670 if (!dev->ethtool_ops->set_coalesce)
1673 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1676 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
1679 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1681 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1683 if (!dev->ethtool_ops->get_ringparam)
1686 dev->ethtool_ops->get_ringparam(dev, &ringparam);
1688 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1693 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1695 struct ethtool_ringparam ringparam;
1697 if (!dev->ethtool_ops->set_ringparam)
1700 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1703 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
1706 static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
1707 void __user *useraddr)
1709 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
1711 if (!dev->ethtool_ops->get_channels)
1714 dev->ethtool_ops->get_channels(dev, &channels);
1716 if (copy_to_user(useraddr, &channels, sizeof(channels)))
1721 static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
1722 void __user *useraddr)
1724 struct ethtool_channels channels, max = { .cmd = ETHTOOL_GCHANNELS };
1725 u32 max_rx_in_use = 0;
1727 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels)
1730 if (copy_from_user(&channels, useraddr, sizeof(channels)))
1733 dev->ethtool_ops->get_channels(dev, &max);
1735 /* ensure new counts are within the maximums */
1736 if ((channels.rx_count > max.max_rx) ||
1737 (channels.tx_count > max.max_tx) ||
1738 (channels.combined_count > max.max_combined) ||
1739 (channels.other_count > max.max_other))
1742 /* ensure the new Rx count fits within the configured Rx flow
1743 * indirection table settings */
1744 if (netif_is_rxfh_configured(dev) &&
1745 !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) &&
1746 (channels.combined_count + channels.rx_count) <= max_rx_in_use)
1749 return dev->ethtool_ops->set_channels(dev, &channels);
1752 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1754 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
1756 if (!dev->ethtool_ops->get_pauseparam)
1759 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1761 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1766 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1768 struct ethtool_pauseparam pauseparam;
1770 if (!dev->ethtool_ops->set_pauseparam)
1773 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1776 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1779 static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1781 struct ethtool_test test;
1782 const struct ethtool_ops *ops = dev->ethtool_ops;
1786 if (!ops->self_test || !ops->get_sset_count)
1789 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
1792 WARN_ON(test_len == 0);
1794 if (copy_from_user(&test, useraddr, sizeof(test)))
1797 test.len = test_len;
1798 data = kmalloc(test_len * sizeof(u64), GFP_USER);
1802 ops->self_test(dev, &test, data);
1805 if (copy_to_user(useraddr, &test, sizeof(test)))
1807 useraddr += sizeof(test);
1808 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1817 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1819 struct ethtool_gstrings gstrings;
1823 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1826 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
1829 if (ret > S32_MAX / ETH_GSTRING_LEN)
1834 data = vzalloc(gstrings.len * ETH_GSTRING_LEN);
1835 if (gstrings.len && !data)
1838 __ethtool_get_strings(dev, gstrings.string_set, data);
1841 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1843 useraddr += sizeof(gstrings);
1845 copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1854 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1856 struct ethtool_value id;
1858 const struct ethtool_ops *ops = dev->ethtool_ops;
1861 if (!ops->set_phys_id)
1867 if (copy_from_user(&id, useraddr, sizeof(id)))
1870 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
1874 /* Drop the RTNL lock while waiting, but prevent reentry or
1875 * removal of the device.
1882 /* Driver will handle this itself */
1883 schedule_timeout_interruptible(
1884 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
1886 /* Driver expects to be called at twice the frequency in rc */
1887 int n = rc * 2, i, interval = HZ / n;
1889 /* Count down seconds */
1891 /* Count down iterations per second */
1895 rc = ops->set_phys_id(dev,
1896 (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
1900 schedule_timeout_interruptible(interval);
1901 } while (!signal_pending(current) && --i != 0);
1902 } while (!signal_pending(current) &&
1903 (id.data == 0 || --id.data != 0));
1910 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
1914 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1916 struct ethtool_stats stats;
1917 const struct ethtool_ops *ops = dev->ethtool_ops;
1921 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1924 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
1927 if (n_stats > S32_MAX / sizeof(u64))
1929 WARN_ON_ONCE(!n_stats);
1930 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1933 stats.n_stats = n_stats;
1934 data = vzalloc(n_stats * sizeof(u64));
1935 if (n_stats && !data)
1938 ops->get_ethtool_stats(dev, &stats, data);
1941 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1943 useraddr += sizeof(stats);
1944 if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
1953 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
1955 struct ethtool_stats stats;
1956 struct phy_device *phydev = dev->phydev;
1963 n_stats = phy_get_sset_count(phydev);
1966 if (n_stats > S32_MAX / sizeof(u64))
1968 WARN_ON_ONCE(!n_stats);
1970 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1973 stats.n_stats = n_stats;
1974 data = vzalloc(n_stats * sizeof(u64));
1975 if (n_stats && !data)
1978 mutex_lock(&phydev->lock);
1979 phydev->drv->get_stats(phydev, &stats, data);
1980 mutex_unlock(&phydev->lock);
1983 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1985 useraddr += sizeof(stats);
1986 if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
1995 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
1997 struct ethtool_perm_addr epaddr;
1999 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
2002 if (epaddr.size < dev->addr_len)
2004 epaddr.size = dev->addr_len;
2006 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
2008 useraddr += sizeof(epaddr);
2009 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
2014 static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
2015 u32 cmd, u32 (*actor)(struct net_device *))
2017 struct ethtool_value edata = { .cmd = cmd };
2022 edata.data = actor(dev);
2024 if (copy_to_user(useraddr, &edata, sizeof(edata)))
2029 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
2030 void (*actor)(struct net_device *, u32))
2032 struct ethtool_value edata;
2037 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2040 actor(dev, edata.data);
2044 static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
2045 int (*actor)(struct net_device *, u32))
2047 struct ethtool_value edata;
2052 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2055 return actor(dev, edata.data);
2058 static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
2059 char __user *useraddr)
2061 struct ethtool_flash efl;
2063 if (copy_from_user(&efl, useraddr, sizeof(efl)))
2066 if (!dev->ethtool_ops->flash_device)
2069 efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
2071 return dev->ethtool_ops->flash_device(dev, &efl);
2074 static int ethtool_set_dump(struct net_device *dev,
2075 void __user *useraddr)
2077 struct ethtool_dump dump;
2079 if (!dev->ethtool_ops->set_dump)
2082 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2085 return dev->ethtool_ops->set_dump(dev, &dump);
2088 static int ethtool_get_dump_flag(struct net_device *dev,
2089 void __user *useraddr)
2092 struct ethtool_dump dump;
2093 const struct ethtool_ops *ops = dev->ethtool_ops;
2095 if (!ops->get_dump_flag)
2098 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2101 ret = ops->get_dump_flag(dev, &dump);
2105 if (copy_to_user(useraddr, &dump, sizeof(dump)))
2110 static int ethtool_get_dump_data(struct net_device *dev,
2111 void __user *useraddr)
2115 struct ethtool_dump dump, tmp;
2116 const struct ethtool_ops *ops = dev->ethtool_ops;
2119 if (!ops->get_dump_data || !ops->get_dump_flag)
2122 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2125 memset(&tmp, 0, sizeof(tmp));
2126 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
2127 ret = ops->get_dump_flag(dev, &tmp);
2131 len = min(tmp.len, dump.len);
2135 /* Don't ever let the driver think there's more space available
2136 * than it requested with .get_dump_flag().
2140 /* Always allocate enough space to hold the whole thing so that the
2141 * driver does not need to check the length and bother with partial
2144 data = vzalloc(tmp.len);
2147 ret = ops->get_dump_data(dev, &dump, data);
2151 /* There are two sane possibilities:
2152 * 1. The driver's .get_dump_data() does not touch dump.len.
2153 * 2. Or it may set dump.len to how much it really writes, which
2154 * should be tmp.len (or len if it can do a partial dump).
2155 * In any case respond to userspace with the actual length of data
2158 WARN_ON(dump.len != len && dump.len != tmp.len);
2161 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
2165 useraddr += offsetof(struct ethtool_dump, data);
2166 if (copy_to_user(useraddr, data, len))
2173 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
2176 struct ethtool_ts_info info;
2177 const struct ethtool_ops *ops = dev->ethtool_ops;
2178 struct phy_device *phydev = dev->phydev;
2180 memset(&info, 0, sizeof(info));
2181 info.cmd = ETHTOOL_GET_TS_INFO;
2183 if (phydev && phydev->drv && phydev->drv->ts_info) {
2184 err = phydev->drv->ts_info(phydev, &info);
2185 } else if (ops->get_ts_info) {
2186 err = ops->get_ts_info(dev, &info);
2188 info.so_timestamping =
2189 SOF_TIMESTAMPING_RX_SOFTWARE |
2190 SOF_TIMESTAMPING_SOFTWARE;
2191 info.phc_index = -1;
2197 if (copy_to_user(useraddr, &info, sizeof(info)))
2203 static int __ethtool_get_module_info(struct net_device *dev,
2204 struct ethtool_modinfo *modinfo)
2206 const struct ethtool_ops *ops = dev->ethtool_ops;
2207 struct phy_device *phydev = dev->phydev;
2209 if (phydev && phydev->drv && phydev->drv->module_info)
2210 return phydev->drv->module_info(phydev, modinfo);
2212 if (ops->get_module_info)
2213 return ops->get_module_info(dev, modinfo);
2218 static int ethtool_get_module_info(struct net_device *dev,
2219 void __user *useraddr)
2222 struct ethtool_modinfo modinfo;
2224 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
2227 ret = __ethtool_get_module_info(dev, &modinfo);
2231 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
2237 static int __ethtool_get_module_eeprom(struct net_device *dev,
2238 struct ethtool_eeprom *ee, u8 *data)
2240 const struct ethtool_ops *ops = dev->ethtool_ops;
2241 struct phy_device *phydev = dev->phydev;
2243 if (phydev && phydev->drv && phydev->drv->module_eeprom)
2244 return phydev->drv->module_eeprom(phydev, ee, data);
2246 if (ops->get_module_eeprom)
2247 return ops->get_module_eeprom(dev, ee, data);
2252 static int ethtool_get_module_eeprom(struct net_device *dev,
2253 void __user *useraddr)
2256 struct ethtool_modinfo modinfo;
2258 ret = __ethtool_get_module_info(dev, &modinfo);
2262 return ethtool_get_any_eeprom(dev, useraddr,
2263 __ethtool_get_module_eeprom,
2264 modinfo.eeprom_len);
2267 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna)
2270 case ETHTOOL_RX_COPYBREAK:
2271 case ETHTOOL_TX_COPYBREAK:
2272 if (tuna->len != sizeof(u32) ||
2273 tuna->type_id != ETHTOOL_TUNABLE_U32)
2283 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr)
2286 struct ethtool_tunable tuna;
2287 const struct ethtool_ops *ops = dev->ethtool_ops;
2290 if (!ops->get_tunable)
2292 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2294 ret = ethtool_tunable_valid(&tuna);
2297 data = kmalloc(tuna.len, GFP_USER);
2300 ret = ops->get_tunable(dev, &tuna, data);
2303 useraddr += sizeof(tuna);
2305 if (copy_to_user(useraddr, data, tuna.len))
2314 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr)
2317 struct ethtool_tunable tuna;
2318 const struct ethtool_ops *ops = dev->ethtool_ops;
2321 if (!ops->set_tunable)
2323 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2325 ret = ethtool_tunable_valid(&tuna);
2328 useraddr += sizeof(tuna);
2329 data = memdup_user(useraddr, tuna.len);
2331 return PTR_ERR(data);
2332 ret = ops->set_tunable(dev, &tuna, data);
2338 static int ethtool_get_per_queue_coalesce(struct net_device *dev,
2339 void __user *useraddr,
2340 struct ethtool_per_queue_op *per_queue_opt)
2344 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2346 if (!dev->ethtool_ops->get_per_queue_coalesce)
2349 useraddr += sizeof(*per_queue_opt);
2351 bitmap_from_u32array(queue_mask,
2353 per_queue_opt->queue_mask,
2354 DIV_ROUND_UP(MAX_NUM_QUEUE, 32));
2356 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2357 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
2359 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce);
2362 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
2364 useraddr += sizeof(coalesce);
2370 static int ethtool_set_per_queue_coalesce(struct net_device *dev,
2371 void __user *useraddr,
2372 struct ethtool_per_queue_op *per_queue_opt)
2377 struct ethtool_coalesce *backup = NULL, *tmp = NULL;
2378 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2380 if ((!dev->ethtool_ops->set_per_queue_coalesce) ||
2381 (!dev->ethtool_ops->get_per_queue_coalesce))
2384 useraddr += sizeof(*per_queue_opt);
2386 bitmap_from_u32array(queue_mask,
2388 per_queue_opt->queue_mask,
2389 DIV_ROUND_UP(MAX_NUM_QUEUE, 32));
2390 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE);
2391 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL);
2395 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2396 struct ethtool_coalesce coalesce;
2398 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp);
2404 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) {
2409 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce);
2413 useraddr += sizeof(coalesce);
2419 for_each_set_bit(i, queue_mask, bit) {
2420 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp);
2429 static int ethtool_set_per_queue(struct net_device *dev, void __user *useraddr)
2431 struct ethtool_per_queue_op per_queue_opt;
2433 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt)))
2436 switch (per_queue_opt.sub_command) {
2437 case ETHTOOL_GCOALESCE:
2438 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt);
2439 case ETHTOOL_SCOALESCE:
2440 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt);
2446 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna)
2449 case ETHTOOL_PHY_DOWNSHIFT:
2450 if (tuna->len != sizeof(u8) ||
2451 tuna->type_id != ETHTOOL_TUNABLE_U8)
2461 static int get_phy_tunable(struct net_device *dev, void __user *useraddr)
2464 struct ethtool_tunable tuna;
2465 struct phy_device *phydev = dev->phydev;
2468 if (!(phydev && phydev->drv && phydev->drv->get_tunable))
2471 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2473 ret = ethtool_phy_tunable_valid(&tuna);
2476 data = kmalloc(tuna.len, GFP_USER);
2479 mutex_lock(&phydev->lock);
2480 ret = phydev->drv->get_tunable(phydev, &tuna, data);
2481 mutex_unlock(&phydev->lock);
2484 useraddr += sizeof(tuna);
2486 if (copy_to_user(useraddr, data, tuna.len))
2495 static int set_phy_tunable(struct net_device *dev, void __user *useraddr)
2498 struct ethtool_tunable tuna;
2499 struct phy_device *phydev = dev->phydev;
2502 if (!(phydev && phydev->drv && phydev->drv->set_tunable))
2504 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2506 ret = ethtool_phy_tunable_valid(&tuna);
2509 useraddr += sizeof(tuna);
2510 data = memdup_user(useraddr, tuna.len);
2512 return PTR_ERR(data);
2513 mutex_lock(&phydev->lock);
2514 ret = phydev->drv->set_tunable(phydev, &tuna, data);
2515 mutex_unlock(&phydev->lock);
2521 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr)
2523 struct ethtool_fecparam fecparam = { ETHTOOL_GFECPARAM };
2525 if (!dev->ethtool_ops->get_fecparam)
2528 dev->ethtool_ops->get_fecparam(dev, &fecparam);
2530 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam)))
2535 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr)
2537 struct ethtool_fecparam fecparam;
2539 if (!dev->ethtool_ops->set_fecparam)
2542 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam)))
2545 return dev->ethtool_ops->set_fecparam(dev, &fecparam);
2548 /* The main entry point in this file. Called from net/core/dev_ioctl.c */
2550 int dev_ethtool(struct net *net, struct ifreq *ifr)
2552 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
2553 void __user *useraddr = ifr->ifr_data;
2554 u32 ethcmd, sub_cmd;
2556 netdev_features_t old_features;
2558 if (!dev || !netif_device_present(dev))
2561 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd)))
2564 if (ethcmd == ETHTOOL_PERQUEUE) {
2565 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd)))
2570 /* Allow some commands to be done by anyone */
2573 case ETHTOOL_GDRVINFO:
2574 case ETHTOOL_GMSGLVL:
2576 case ETHTOOL_GCOALESCE:
2577 case ETHTOOL_GRINGPARAM:
2578 case ETHTOOL_GPAUSEPARAM:
2579 case ETHTOOL_GRXCSUM:
2580 case ETHTOOL_GTXCSUM:
2582 case ETHTOOL_GSSET_INFO:
2583 case ETHTOOL_GSTRINGS:
2584 case ETHTOOL_GSTATS:
2585 case ETHTOOL_GPHYSTATS:
2587 case ETHTOOL_GPERMADDR:
2590 case ETHTOOL_GFLAGS:
2591 case ETHTOOL_GPFLAGS:
2593 case ETHTOOL_GRXRINGS:
2594 case ETHTOOL_GRXCLSRLCNT:
2595 case ETHTOOL_GRXCLSRULE:
2596 case ETHTOOL_GRXCLSRLALL:
2597 case ETHTOOL_GRXFHINDIR:
2599 case ETHTOOL_GFEATURES:
2600 case ETHTOOL_GCHANNELS:
2601 case ETHTOOL_GET_TS_INFO:
2603 case ETHTOOL_GTUNABLE:
2604 case ETHTOOL_PHY_GTUNABLE:
2605 case ETHTOOL_GLINKSETTINGS:
2606 case ETHTOOL_GFECPARAM:
2609 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
2613 if (dev->ethtool_ops->begin) {
2614 rc = dev->ethtool_ops->begin(dev);
2618 old_features = dev->features;
2622 rc = ethtool_get_settings(dev, useraddr);
2625 rc = ethtool_set_settings(dev, useraddr);
2627 case ETHTOOL_GDRVINFO:
2628 rc = ethtool_get_drvinfo(dev, useraddr);
2631 rc = ethtool_get_regs(dev, useraddr);
2634 rc = ethtool_get_wol(dev, useraddr);
2637 rc = ethtool_set_wol(dev, useraddr);
2639 case ETHTOOL_GMSGLVL:
2640 rc = ethtool_get_value(dev, useraddr, ethcmd,
2641 dev->ethtool_ops->get_msglevel);
2643 case ETHTOOL_SMSGLVL:
2644 rc = ethtool_set_value_void(dev, useraddr,
2645 dev->ethtool_ops->set_msglevel);
2648 rc = ethtool_get_eee(dev, useraddr);
2651 rc = ethtool_set_eee(dev, useraddr);
2653 case ETHTOOL_NWAY_RST:
2654 rc = ethtool_nway_reset(dev);
2657 rc = ethtool_get_link(dev, useraddr);
2659 case ETHTOOL_GEEPROM:
2660 rc = ethtool_get_eeprom(dev, useraddr);
2662 case ETHTOOL_SEEPROM:
2663 rc = ethtool_set_eeprom(dev, useraddr);
2665 case ETHTOOL_GCOALESCE:
2666 rc = ethtool_get_coalesce(dev, useraddr);
2668 case ETHTOOL_SCOALESCE:
2669 rc = ethtool_set_coalesce(dev, useraddr);
2671 case ETHTOOL_GRINGPARAM:
2672 rc = ethtool_get_ringparam(dev, useraddr);
2674 case ETHTOOL_SRINGPARAM:
2675 rc = ethtool_set_ringparam(dev, useraddr);
2677 case ETHTOOL_GPAUSEPARAM:
2678 rc = ethtool_get_pauseparam(dev, useraddr);
2680 case ETHTOOL_SPAUSEPARAM:
2681 rc = ethtool_set_pauseparam(dev, useraddr);
2684 rc = ethtool_self_test(dev, useraddr);
2686 case ETHTOOL_GSTRINGS:
2687 rc = ethtool_get_strings(dev, useraddr);
2689 case ETHTOOL_PHYS_ID:
2690 rc = ethtool_phys_id(dev, useraddr);
2692 case ETHTOOL_GSTATS:
2693 rc = ethtool_get_stats(dev, useraddr);
2695 case ETHTOOL_GPERMADDR:
2696 rc = ethtool_get_perm_addr(dev, useraddr);
2698 case ETHTOOL_GFLAGS:
2699 rc = ethtool_get_value(dev, useraddr, ethcmd,
2700 __ethtool_get_flags);
2702 case ETHTOOL_SFLAGS:
2703 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
2705 case ETHTOOL_GPFLAGS:
2706 rc = ethtool_get_value(dev, useraddr, ethcmd,
2707 dev->ethtool_ops->get_priv_flags);
2709 case ETHTOOL_SPFLAGS:
2710 rc = ethtool_set_value(dev, useraddr,
2711 dev->ethtool_ops->set_priv_flags);
2714 case ETHTOOL_GRXRINGS:
2715 case ETHTOOL_GRXCLSRLCNT:
2716 case ETHTOOL_GRXCLSRULE:
2717 case ETHTOOL_GRXCLSRLALL:
2718 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
2721 case ETHTOOL_SRXCLSRLDEL:
2722 case ETHTOOL_SRXCLSRLINS:
2723 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
2725 case ETHTOOL_FLASHDEV:
2726 rc = ethtool_flash_device(dev, useraddr);
2729 rc = ethtool_reset(dev, useraddr);
2731 case ETHTOOL_GSSET_INFO:
2732 rc = ethtool_get_sset_info(dev, useraddr);
2734 case ETHTOOL_GRXFHINDIR:
2735 rc = ethtool_get_rxfh_indir(dev, useraddr);
2737 case ETHTOOL_SRXFHINDIR:
2738 rc = ethtool_set_rxfh_indir(dev, useraddr);
2741 rc = ethtool_get_rxfh(dev, useraddr);
2744 rc = ethtool_set_rxfh(dev, useraddr);
2746 case ETHTOOL_GFEATURES:
2747 rc = ethtool_get_features(dev, useraddr);
2749 case ETHTOOL_SFEATURES:
2750 rc = ethtool_set_features(dev, useraddr);
2752 case ETHTOOL_GTXCSUM:
2753 case ETHTOOL_GRXCSUM:
2758 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
2760 case ETHTOOL_STXCSUM:
2761 case ETHTOOL_SRXCSUM:
2766 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
2768 case ETHTOOL_GCHANNELS:
2769 rc = ethtool_get_channels(dev, useraddr);
2771 case ETHTOOL_SCHANNELS:
2772 rc = ethtool_set_channels(dev, useraddr);
2774 case ETHTOOL_SET_DUMP:
2775 rc = ethtool_set_dump(dev, useraddr);
2777 case ETHTOOL_GET_DUMP_FLAG:
2778 rc = ethtool_get_dump_flag(dev, useraddr);
2780 case ETHTOOL_GET_DUMP_DATA:
2781 rc = ethtool_get_dump_data(dev, useraddr);
2783 case ETHTOOL_GET_TS_INFO:
2784 rc = ethtool_get_ts_info(dev, useraddr);
2786 case ETHTOOL_GMODULEINFO:
2787 rc = ethtool_get_module_info(dev, useraddr);
2789 case ETHTOOL_GMODULEEEPROM:
2790 rc = ethtool_get_module_eeprom(dev, useraddr);
2792 case ETHTOOL_GTUNABLE:
2793 rc = ethtool_get_tunable(dev, useraddr);
2795 case ETHTOOL_STUNABLE:
2796 rc = ethtool_set_tunable(dev, useraddr);
2798 case ETHTOOL_GPHYSTATS:
2799 rc = ethtool_get_phy_stats(dev, useraddr);
2801 case ETHTOOL_PERQUEUE:
2802 rc = ethtool_set_per_queue(dev, useraddr);
2804 case ETHTOOL_GLINKSETTINGS:
2805 rc = ethtool_get_link_ksettings(dev, useraddr);
2807 case ETHTOOL_SLINKSETTINGS:
2808 rc = ethtool_set_link_ksettings(dev, useraddr);
2810 case ETHTOOL_PHY_GTUNABLE:
2811 rc = get_phy_tunable(dev, useraddr);
2813 case ETHTOOL_PHY_STUNABLE:
2814 rc = set_phy_tunable(dev, useraddr);
2816 case ETHTOOL_GFECPARAM:
2817 rc = ethtool_get_fecparam(dev, useraddr);
2819 case ETHTOOL_SFECPARAM:
2820 rc = ethtool_set_fecparam(dev, useraddr);
2826 if (dev->ethtool_ops->complete)
2827 dev->ethtool_ops->complete(dev);
2829 if (old_features != dev->features)
2830 netdev_features_change(dev);