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 * 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->maxtxpkt ||
455 legacy_settings->maxrxpkt)
458 ethtool_convert_legacy_u32_to_link_mode(
459 link_ksettings->link_modes.supported,
460 legacy_settings->supported);
461 ethtool_convert_legacy_u32_to_link_mode(
462 link_ksettings->link_modes.advertising,
463 legacy_settings->advertising);
464 ethtool_convert_legacy_u32_to_link_mode(
465 link_ksettings->link_modes.lp_advertising,
466 legacy_settings->lp_advertising);
467 link_ksettings->base.speed
468 = ethtool_cmd_speed(legacy_settings);
469 link_ksettings->base.duplex
470 = legacy_settings->duplex;
471 link_ksettings->base.port
472 = legacy_settings->port;
473 link_ksettings->base.phy_address
474 = legacy_settings->phy_address;
475 link_ksettings->base.autoneg
476 = legacy_settings->autoneg;
477 link_ksettings->base.mdio_support
478 = legacy_settings->mdio_support;
479 link_ksettings->base.eth_tp_mdix
480 = legacy_settings->eth_tp_mdix;
481 link_ksettings->base.eth_tp_mdix_ctrl
482 = legacy_settings->eth_tp_mdix_ctrl;
486 /* return false if ksettings link modes had higher bits
487 * set. legacy_settings always updated (best effort)
490 convert_link_ksettings_to_legacy_settings(
491 struct ethtool_cmd *legacy_settings,
492 const struct ethtool_link_ksettings *link_ksettings)
496 memset(legacy_settings, 0, sizeof(*legacy_settings));
497 /* this also clears the deprecated fields in legacy structure:
503 retval &= ethtool_convert_link_mode_to_legacy_u32(
504 &legacy_settings->supported,
505 link_ksettings->link_modes.supported);
506 retval &= ethtool_convert_link_mode_to_legacy_u32(
507 &legacy_settings->advertising,
508 link_ksettings->link_modes.advertising);
509 retval &= ethtool_convert_link_mode_to_legacy_u32(
510 &legacy_settings->lp_advertising,
511 link_ksettings->link_modes.lp_advertising);
512 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed);
513 legacy_settings->duplex
514 = link_ksettings->base.duplex;
515 legacy_settings->port
516 = link_ksettings->base.port;
517 legacy_settings->phy_address
518 = link_ksettings->base.phy_address;
519 legacy_settings->autoneg
520 = link_ksettings->base.autoneg;
521 legacy_settings->mdio_support
522 = link_ksettings->base.mdio_support;
523 legacy_settings->eth_tp_mdix
524 = link_ksettings->base.eth_tp_mdix;
525 legacy_settings->eth_tp_mdix_ctrl
526 = link_ksettings->base.eth_tp_mdix_ctrl;
527 legacy_settings->transceiver
528 = link_ksettings->base.transceiver;
532 /* number of 32-bit words to store the user's link mode bitmaps */
533 #define __ETHTOOL_LINK_MODE_MASK_NU32 \
534 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
536 /* layout of the struct passed from/to userland */
537 struct ethtool_link_usettings {
538 struct ethtool_link_settings base;
540 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32];
541 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
542 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
546 /* Internal kernel helper to query a device ethtool_link_settings.
548 * Backward compatibility note: for compatibility with legacy drivers
549 * that implement only the ethtool_cmd API, this has to work with both
550 * drivers implementing get_link_ksettings API and drivers
551 * implementing get_settings API. When drivers implement get_settings
552 * and report ethtool_cmd deprecated fields
553 * (transceiver/maxrxpkt/maxtxpkt), these fields are silently ignored
554 * because the resulting struct ethtool_link_settings does not report them.
556 int __ethtool_get_link_ksettings(struct net_device *dev,
557 struct ethtool_link_ksettings *link_ksettings)
560 struct ethtool_cmd cmd;
564 if (dev->ethtool_ops->get_link_ksettings) {
565 memset(link_ksettings, 0, sizeof(*link_ksettings));
566 return dev->ethtool_ops->get_link_ksettings(dev,
570 /* driver doesn't support %ethtool_link_ksettings API. revert to
571 * legacy %ethtool_cmd API, unless it's not supported either.
572 * TODO: remove when ethtool_ops::get_settings disappears internally
574 if (!dev->ethtool_ops->get_settings)
577 memset(&cmd, 0, sizeof(cmd));
578 cmd.cmd = ETHTOOL_GSET;
579 err = dev->ethtool_ops->get_settings(dev, &cmd);
583 /* we ignore deprecated fields transceiver/maxrxpkt/maxtxpkt
585 convert_legacy_settings_to_link_ksettings(link_ksettings, &cmd);
588 EXPORT_SYMBOL(__ethtool_get_link_ksettings);
590 /* convert ethtool_link_usettings in user space to a kernel internal
591 * ethtool_link_ksettings. return 0 on success, errno on error.
593 static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to,
594 const void __user *from)
596 struct ethtool_link_usettings link_usettings;
598 if (copy_from_user(&link_usettings, from, sizeof(link_usettings)))
601 memcpy(&to->base, &link_usettings.base, sizeof(to->base));
602 bitmap_from_u32array(to->link_modes.supported,
603 __ETHTOOL_LINK_MODE_MASK_NBITS,
604 link_usettings.link_modes.supported,
605 __ETHTOOL_LINK_MODE_MASK_NU32);
606 bitmap_from_u32array(to->link_modes.advertising,
607 __ETHTOOL_LINK_MODE_MASK_NBITS,
608 link_usettings.link_modes.advertising,
609 __ETHTOOL_LINK_MODE_MASK_NU32);
610 bitmap_from_u32array(to->link_modes.lp_advertising,
611 __ETHTOOL_LINK_MODE_MASK_NBITS,
612 link_usettings.link_modes.lp_advertising,
613 __ETHTOOL_LINK_MODE_MASK_NU32);
618 /* convert a kernel internal ethtool_link_ksettings to
619 * ethtool_link_usettings in user space. return 0 on success, errno on
623 store_link_ksettings_for_user(void __user *to,
624 const struct ethtool_link_ksettings *from)
626 struct ethtool_link_usettings link_usettings;
628 memcpy(&link_usettings.base, &from->base, sizeof(link_usettings));
629 bitmap_to_u32array(link_usettings.link_modes.supported,
630 __ETHTOOL_LINK_MODE_MASK_NU32,
631 from->link_modes.supported,
632 __ETHTOOL_LINK_MODE_MASK_NBITS);
633 bitmap_to_u32array(link_usettings.link_modes.advertising,
634 __ETHTOOL_LINK_MODE_MASK_NU32,
635 from->link_modes.advertising,
636 __ETHTOOL_LINK_MODE_MASK_NBITS);
637 bitmap_to_u32array(link_usettings.link_modes.lp_advertising,
638 __ETHTOOL_LINK_MODE_MASK_NU32,
639 from->link_modes.lp_advertising,
640 __ETHTOOL_LINK_MODE_MASK_NBITS);
642 if (copy_to_user(to, &link_usettings, sizeof(link_usettings)))
648 /* Query device for its ethtool_link_settings.
650 * Backward compatibility note: this function must fail when driver
651 * does not implement ethtool::get_link_ksettings, even if legacy
652 * ethtool_ops::get_settings is implemented. This tells new versions
653 * of ethtool that they should use the legacy API %ETHTOOL_GSET for
654 * this driver, so that they can correctly access the ethtool_cmd
655 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
656 * implements ethtool_ops::get_settings anymore.
658 static int ethtool_get_link_ksettings(struct net_device *dev,
659 void __user *useraddr)
662 struct ethtool_link_ksettings link_ksettings;
666 if (!dev->ethtool_ops->get_link_ksettings)
669 /* handle bitmap nbits handshake */
670 if (copy_from_user(&link_ksettings.base, useraddr,
671 sizeof(link_ksettings.base)))
674 if (__ETHTOOL_LINK_MODE_MASK_NU32
675 != link_ksettings.base.link_mode_masks_nwords) {
676 /* wrong link mode nbits requested */
677 memset(&link_ksettings, 0, sizeof(link_ksettings));
678 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
679 /* send back number of words required as negative val */
680 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX,
681 "need too many bits for link modes!");
682 link_ksettings.base.link_mode_masks_nwords
683 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32);
685 /* copy the base fields back to user, not the link
688 if (copy_to_user(useraddr, &link_ksettings.base,
689 sizeof(link_ksettings.base)))
695 /* handshake successful: user/kernel agree on
696 * link_mode_masks_nwords
699 memset(&link_ksettings, 0, sizeof(link_ksettings));
700 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
704 /* make sure we tell the right values to user */
705 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
706 link_ksettings.base.link_mode_masks_nwords
707 = __ETHTOOL_LINK_MODE_MASK_NU32;
709 return store_link_ksettings_for_user(useraddr, &link_ksettings);
712 /* Update device ethtool_link_settings.
714 * Backward compatibility note: this function must fail when driver
715 * does not implement ethtool::set_link_ksettings, even if legacy
716 * ethtool_ops::set_settings is implemented. This tells new versions
717 * of ethtool that they should use the legacy API %ETHTOOL_SSET for
718 * this driver, so that they can correctly update the ethtool_cmd
719 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
720 * implements ethtool_ops::get_settings anymore.
722 static int ethtool_set_link_ksettings(struct net_device *dev,
723 void __user *useraddr)
726 struct ethtool_link_ksettings link_ksettings;
730 if (!dev->ethtool_ops->set_link_ksettings)
733 /* make sure nbits field has expected value */
734 if (copy_from_user(&link_ksettings.base, useraddr,
735 sizeof(link_ksettings.base)))
738 if (__ETHTOOL_LINK_MODE_MASK_NU32
739 != link_ksettings.base.link_mode_masks_nwords)
742 /* copy the whole structure, now that we know it has expected
745 err = load_link_ksettings_from_user(&link_ksettings, useraddr);
749 /* re-check nwords field, just in case */
750 if (__ETHTOOL_LINK_MODE_MASK_NU32
751 != link_ksettings.base.link_mode_masks_nwords)
754 return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
757 /* Query device for its ethtool_cmd settings.
759 * Backward compatibility note: for compatibility with legacy ethtool,
760 * this has to work with both drivers implementing get_link_ksettings
761 * API and drivers implementing get_settings API. When drivers
762 * implement get_link_ksettings and report higher link mode bits, a
763 * kernel warning is logged once (with name of 1st driver/device) to
764 * recommend user to upgrade ethtool, but the command is successful
765 * (only the lower link mode bits reported back to user).
767 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
769 struct ethtool_cmd cmd;
773 if (dev->ethtool_ops->get_link_ksettings) {
774 /* First, use link_ksettings API if it is supported */
776 struct ethtool_link_ksettings link_ksettings;
778 memset(&link_ksettings, 0, sizeof(link_ksettings));
779 err = dev->ethtool_ops->get_link_ksettings(dev,
783 convert_link_ksettings_to_legacy_settings(&cmd,
786 /* send a sensible cmd tag back to user */
787 cmd.cmd = ETHTOOL_GSET;
789 /* driver doesn't support %ethtool_link_ksettings
790 * API. revert to legacy %ethtool_cmd API, unless it's
791 * not supported either.
795 if (!dev->ethtool_ops->get_settings)
798 memset(&cmd, 0, sizeof(cmd));
799 cmd.cmd = ETHTOOL_GSET;
800 err = dev->ethtool_ops->get_settings(dev, &cmd);
805 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
811 /* Update device link settings with given ethtool_cmd.
813 * Backward compatibility note: for compatibility with legacy ethtool,
814 * this has to work with both drivers implementing set_link_ksettings
815 * API and drivers implementing set_settings API. When drivers
816 * implement set_link_ksettings and user's request updates deprecated
817 * ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
818 * warning is logged once (with name of 1st driver/device) to
819 * recommend user to upgrade ethtool, and the request is rejected.
821 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
823 struct ethtool_cmd cmd;
827 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
830 /* first, try new %ethtool_link_ksettings API. */
831 if (dev->ethtool_ops->set_link_ksettings) {
832 struct ethtool_link_ksettings link_ksettings;
834 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings,
838 link_ksettings.base.cmd = ETHTOOL_SLINKSETTINGS;
839 link_ksettings.base.link_mode_masks_nwords
840 = __ETHTOOL_LINK_MODE_MASK_NU32;
841 return dev->ethtool_ops->set_link_ksettings(dev,
845 /* legacy %ethtool_cmd API */
847 /* TODO: return -EOPNOTSUPP when ethtool_ops::get_settings
848 * disappears internally
851 if (!dev->ethtool_ops->set_settings)
854 return dev->ethtool_ops->set_settings(dev, &cmd);
857 static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
858 void __user *useraddr)
860 struct ethtool_drvinfo info;
861 const struct ethtool_ops *ops = dev->ethtool_ops;
863 memset(&info, 0, sizeof(info));
864 info.cmd = ETHTOOL_GDRVINFO;
865 if (ops->get_drvinfo) {
866 ops->get_drvinfo(dev, &info);
867 } else if (dev->dev.parent && dev->dev.parent->driver) {
868 strlcpy(info.bus_info, dev_name(dev->dev.parent),
869 sizeof(info.bus_info));
870 strlcpy(info.driver, dev->dev.parent->driver->name,
871 sizeof(info.driver));
877 * this method of obtaining string set info is deprecated;
878 * Use ETHTOOL_GSSET_INFO instead.
880 if (ops->get_sset_count) {
883 rc = ops->get_sset_count(dev, ETH_SS_TEST);
885 info.testinfo_len = rc;
886 rc = ops->get_sset_count(dev, ETH_SS_STATS);
889 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
891 info.n_priv_flags = rc;
893 if (ops->get_regs_len) {
894 int ret = ops->get_regs_len(dev);
897 info.regdump_len = ret;
900 if (ops->get_eeprom_len)
901 info.eedump_len = ops->get_eeprom_len(dev);
903 if (copy_to_user(useraddr, &info, sizeof(info)))
908 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
909 void __user *useraddr)
911 struct ethtool_sset_info info;
913 int i, idx = 0, n_bits = 0, ret, rc;
914 u32 *info_buf = NULL;
916 if (copy_from_user(&info, useraddr, sizeof(info)))
919 /* store copy of mask, because we zero struct later on */
920 sset_mask = info.sset_mask;
924 /* calculate size of return buffer */
925 n_bits = hweight64(sset_mask);
927 memset(&info, 0, sizeof(info));
928 info.cmd = ETHTOOL_GSSET_INFO;
930 info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
935 * fill return buffer based on input bitmask and successful
936 * get_sset_count return
938 for (i = 0; i < 64; i++) {
939 if (!(sset_mask & (1ULL << i)))
942 rc = __ethtool_get_sset_count(dev, i);
944 info.sset_mask |= (1ULL << i);
945 info_buf[idx++] = rc;
950 if (copy_to_user(useraddr, &info, sizeof(info)))
953 useraddr += offsetof(struct ethtool_sset_info, data);
954 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
964 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
965 u32 cmd, void __user *useraddr)
967 struct ethtool_rxnfc info;
968 size_t info_size = sizeof(info);
971 if (!dev->ethtool_ops->set_rxnfc)
974 /* struct ethtool_rxnfc was originally defined for
975 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
976 * members. User-space might still be using that
978 if (cmd == ETHTOOL_SRXFH)
979 info_size = (offsetof(struct ethtool_rxnfc, data) +
982 if (copy_from_user(&info, useraddr, info_size))
985 rc = dev->ethtool_ops->set_rxnfc(dev, &info);
989 if (cmd == ETHTOOL_SRXCLSRLINS &&
990 copy_to_user(useraddr, &info, info_size))
996 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
997 u32 cmd, void __user *useraddr)
999 struct ethtool_rxnfc info;
1000 size_t info_size = sizeof(info);
1001 const struct ethtool_ops *ops = dev->ethtool_ops;
1003 void *rule_buf = NULL;
1005 if (!ops->get_rxnfc)
1008 /* struct ethtool_rxnfc was originally defined for
1009 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
1010 * members. User-space might still be using that
1012 if (cmd == ETHTOOL_GRXFH)
1013 info_size = (offsetof(struct ethtool_rxnfc, data) +
1016 if (copy_from_user(&info, useraddr, info_size))
1019 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
1020 if (info.rule_cnt > 0) {
1021 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
1022 rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
1029 ret = ops->get_rxnfc(dev, &info, rule_buf);
1034 if (copy_to_user(useraddr, &info, info_size))
1038 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
1039 if (copy_to_user(useraddr, rule_buf,
1040 info.rule_cnt * sizeof(u32)))
1051 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr,
1052 struct ethtool_rxnfc *rx_rings,
1057 if (copy_from_user(indir, useraddr, size * sizeof(indir[0])))
1060 /* Validate ring indices */
1061 for (i = 0; i < size; i++)
1062 if (indir[i] >= rx_rings->data)
1068 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly;
1070 void netdev_rss_key_fill(void *buffer, size_t len)
1072 BUG_ON(len > sizeof(netdev_rss_key));
1073 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key));
1074 memcpy(buffer, netdev_rss_key, len);
1076 EXPORT_SYMBOL(netdev_rss_key_fill);
1078 static int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max)
1080 u32 dev_size, current_max = 0;
1084 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1085 !dev->ethtool_ops->get_rxfh)
1087 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1091 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1095 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1100 current_max = max(current_max, indir[dev_size]);
1109 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
1110 void __user *useraddr)
1112 u32 user_size, dev_size;
1116 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1117 !dev->ethtool_ops->get_rxfh)
1119 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1123 if (copy_from_user(&user_size,
1124 useraddr + offsetof(struct ethtool_rxfh_indir, size),
1128 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
1129 &dev_size, sizeof(dev_size)))
1132 /* If the user buffer size is 0, this is just a query for the
1133 * device table size. Otherwise, if it's smaller than the
1134 * device table size it's an error.
1136 if (user_size < dev_size)
1137 return user_size == 0 ? 0 : -EINVAL;
1139 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1143 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1147 if (copy_to_user(useraddr +
1148 offsetof(struct ethtool_rxfh_indir, ring_index[0]),
1149 indir, dev_size * sizeof(indir[0])))
1157 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
1158 void __user *useraddr)
1160 struct ethtool_rxnfc rx_rings;
1161 u32 user_size, dev_size, i;
1163 const struct ethtool_ops *ops = dev->ethtool_ops;
1165 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]);
1167 if (!ops->get_rxfh_indir_size || !ops->set_rxfh ||
1171 dev_size = ops->get_rxfh_indir_size(dev);
1175 if (copy_from_user(&user_size,
1176 useraddr + offsetof(struct ethtool_rxfh_indir, size),
1180 if (user_size != 0 && user_size != dev_size)
1183 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1187 rx_rings.cmd = ETHTOOL_GRXRINGS;
1188 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1192 if (user_size == 0) {
1193 for (i = 0; i < dev_size; i++)
1194 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1196 ret = ethtool_copy_validate_indir(indir,
1197 useraddr + ringidx_offset,
1204 ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE);
1208 /* indicate whether rxfh was set to default */
1210 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1212 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1219 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
1220 void __user *useraddr)
1223 const struct ethtool_ops *ops = dev->ethtool_ops;
1224 u32 user_indir_size, user_key_size;
1225 u32 dev_indir_size = 0, dev_key_size = 0;
1226 struct ethtool_rxfh rxfh;
1237 if (ops->get_rxfh_indir_size)
1238 dev_indir_size = ops->get_rxfh_indir_size(dev);
1239 if (ops->get_rxfh_key_size)
1240 dev_key_size = ops->get_rxfh_key_size(dev);
1242 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
1244 user_indir_size = rxfh.indir_size;
1245 user_key_size = rxfh.key_size;
1247 /* Check that reserved fields are 0 for now */
1248 if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] ||
1249 rxfh.rsvd8[2] || rxfh.rsvd32)
1252 rxfh.indir_size = dev_indir_size;
1253 rxfh.key_size = dev_key_size;
1254 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh)))
1257 if ((user_indir_size && (user_indir_size != dev_indir_size)) ||
1258 (user_key_size && (user_key_size != dev_key_size)))
1261 indir_bytes = user_indir_size * sizeof(indir[0]);
1262 total_size = indir_bytes + user_key_size;
1263 rss_config = kzalloc(total_size, GFP_USER);
1267 if (user_indir_size)
1268 indir = (u32 *)rss_config;
1271 hkey = rss_config + indir_bytes;
1273 ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc);
1277 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc),
1278 &dev_hfunc, sizeof(rxfh.hfunc))) {
1280 } else if (copy_to_user(useraddr +
1281 offsetof(struct ethtool_rxfh, rss_config[0]),
1282 rss_config, total_size)) {
1291 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
1292 void __user *useraddr)
1295 const struct ethtool_ops *ops = dev->ethtool_ops;
1296 struct ethtool_rxnfc rx_rings;
1297 struct ethtool_rxfh rxfh;
1298 u32 dev_indir_size = 0, dev_key_size = 0, i;
1299 u32 *indir = NULL, indir_bytes = 0;
1302 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]);
1304 if (!ops->get_rxnfc || !ops->set_rxfh)
1307 if (ops->get_rxfh_indir_size)
1308 dev_indir_size = ops->get_rxfh_indir_size(dev);
1309 if (ops->get_rxfh_key_size)
1310 dev_key_size = ops->get_rxfh_key_size(dev);
1312 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
1315 /* Check that reserved fields are 0 for now */
1316 if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] ||
1317 rxfh.rsvd8[2] || rxfh.rsvd32)
1320 /* If either indir, hash key or function is valid, proceed further.
1321 * Must request at least one change: indir size, hash key or function.
1323 if ((rxfh.indir_size &&
1324 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE &&
1325 rxfh.indir_size != dev_indir_size) ||
1326 (rxfh.key_size && (rxfh.key_size != dev_key_size)) ||
1327 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE &&
1328 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE))
1331 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1332 indir_bytes = dev_indir_size * sizeof(indir[0]);
1334 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER);
1338 rx_rings.cmd = ETHTOOL_GRXRINGS;
1339 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1343 /* rxfh.indir_size == 0 means reset the indir table to default.
1344 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
1346 if (rxfh.indir_size &&
1347 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) {
1348 indir = (u32 *)rss_config;
1349 ret = ethtool_copy_validate_indir(indir,
1350 useraddr + rss_cfg_offset,
1355 } else if (rxfh.indir_size == 0) {
1356 indir = (u32 *)rss_config;
1357 for (i = 0; i < dev_indir_size; i++)
1358 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1361 if (rxfh.key_size) {
1362 hkey = rss_config + indir_bytes;
1363 if (copy_from_user(hkey,
1364 useraddr + rss_cfg_offset + indir_bytes,
1371 ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc);
1375 /* indicate whether rxfh was set to default */
1376 if (rxfh.indir_size == 0)
1377 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1378 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1379 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1386 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
1388 struct ethtool_regs regs;
1389 const struct ethtool_ops *ops = dev->ethtool_ops;
1393 if (!ops->get_regs || !ops->get_regs_len)
1396 if (copy_from_user(®s, useraddr, sizeof(regs)))
1399 reglen = ops->get_regs_len(dev);
1403 if (regs.len > reglen)
1408 regbuf = vzalloc(reglen);
1413 if (regs.len < reglen)
1416 ops->get_regs(dev, ®s, regbuf);
1419 if (copy_to_user(useraddr, ®s, sizeof(regs)))
1421 useraddr += offsetof(struct ethtool_regs, data);
1422 if (copy_to_user(useraddr, regbuf, reglen))
1431 static int ethtool_reset(struct net_device *dev, char __user *useraddr)
1433 struct ethtool_value reset;
1436 if (!dev->ethtool_ops->reset)
1439 if (copy_from_user(&reset, useraddr, sizeof(reset)))
1442 ret = dev->ethtool_ops->reset(dev, &reset.data);
1446 if (copy_to_user(useraddr, &reset, sizeof(reset)))
1451 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
1453 struct ethtool_wolinfo wol;
1455 if (!dev->ethtool_ops->get_wol)
1458 memset(&wol, 0, sizeof(struct ethtool_wolinfo));
1459 wol.cmd = ETHTOOL_GWOL;
1460 dev->ethtool_ops->get_wol(dev, &wol);
1462 if (copy_to_user(useraddr, &wol, sizeof(wol)))
1467 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
1469 struct ethtool_wolinfo wol;
1471 if (!dev->ethtool_ops->set_wol)
1474 if (copy_from_user(&wol, useraddr, sizeof(wol)))
1477 return dev->ethtool_ops->set_wol(dev, &wol);
1480 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
1482 struct ethtool_eee edata;
1485 if (!dev->ethtool_ops->get_eee)
1488 memset(&edata, 0, sizeof(struct ethtool_eee));
1489 edata.cmd = ETHTOOL_GEEE;
1490 rc = dev->ethtool_ops->get_eee(dev, &edata);
1495 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1501 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
1503 struct ethtool_eee edata;
1505 if (!dev->ethtool_ops->set_eee)
1508 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1511 return dev->ethtool_ops->set_eee(dev, &edata);
1514 static int ethtool_nway_reset(struct net_device *dev)
1516 if (!dev->ethtool_ops->nway_reset)
1519 return dev->ethtool_ops->nway_reset(dev);
1522 static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
1524 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
1526 if (!dev->ethtool_ops->get_link)
1529 edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
1531 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1536 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
1537 int (*getter)(struct net_device *,
1538 struct ethtool_eeprom *, u8 *),
1541 struct ethtool_eeprom eeprom;
1542 void __user *userbuf = useraddr + sizeof(eeprom);
1543 u32 bytes_remaining;
1547 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1550 /* Check for wrap and zero */
1551 if (eeprom.offset + eeprom.len <= eeprom.offset)
1554 /* Check for exceeding total eeprom len */
1555 if (eeprom.offset + eeprom.len > total_len)
1558 data = kmalloc(PAGE_SIZE, GFP_USER);
1562 bytes_remaining = eeprom.len;
1563 while (bytes_remaining > 0) {
1564 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1566 ret = getter(dev, &eeprom, data);
1569 if (copy_to_user(userbuf, data, eeprom.len)) {
1573 userbuf += eeprom.len;
1574 eeprom.offset += eeprom.len;
1575 bytes_remaining -= eeprom.len;
1578 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
1579 eeprom.offset -= eeprom.len;
1580 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
1587 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
1589 const struct ethtool_ops *ops = dev->ethtool_ops;
1591 if (!ops->get_eeprom || !ops->get_eeprom_len ||
1592 !ops->get_eeprom_len(dev))
1595 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
1596 ops->get_eeprom_len(dev));
1599 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
1601 struct ethtool_eeprom eeprom;
1602 const struct ethtool_ops *ops = dev->ethtool_ops;
1603 void __user *userbuf = useraddr + sizeof(eeprom);
1604 u32 bytes_remaining;
1608 if (!ops->set_eeprom || !ops->get_eeprom_len ||
1609 !ops->get_eeprom_len(dev))
1612 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1615 /* Check for wrap and zero */
1616 if (eeprom.offset + eeprom.len <= eeprom.offset)
1619 /* Check for exceeding total eeprom len */
1620 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1623 data = kmalloc(PAGE_SIZE, GFP_USER);
1627 bytes_remaining = eeprom.len;
1628 while (bytes_remaining > 0) {
1629 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1631 if (copy_from_user(data, userbuf, eeprom.len)) {
1635 ret = ops->set_eeprom(dev, &eeprom, data);
1638 userbuf += eeprom.len;
1639 eeprom.offset += eeprom.len;
1640 bytes_remaining -= eeprom.len;
1647 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1648 void __user *useraddr)
1650 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1652 if (!dev->ethtool_ops->get_coalesce)
1655 dev->ethtool_ops->get_coalesce(dev, &coalesce);
1657 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1662 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1663 void __user *useraddr)
1665 struct ethtool_coalesce coalesce;
1667 if (!dev->ethtool_ops->set_coalesce)
1670 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1673 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
1676 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1678 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1680 if (!dev->ethtool_ops->get_ringparam)
1683 dev->ethtool_ops->get_ringparam(dev, &ringparam);
1685 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1690 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1692 struct ethtool_ringparam ringparam;
1694 if (!dev->ethtool_ops->set_ringparam)
1697 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1700 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
1703 static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
1704 void __user *useraddr)
1706 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
1708 if (!dev->ethtool_ops->get_channels)
1711 dev->ethtool_ops->get_channels(dev, &channels);
1713 if (copy_to_user(useraddr, &channels, sizeof(channels)))
1718 static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
1719 void __user *useraddr)
1721 struct ethtool_channels channels, max = { .cmd = ETHTOOL_GCHANNELS };
1722 u32 max_rx_in_use = 0;
1724 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels)
1727 if (copy_from_user(&channels, useraddr, sizeof(channels)))
1730 dev->ethtool_ops->get_channels(dev, &max);
1732 /* ensure new counts are within the maximums */
1733 if ((channels.rx_count > max.max_rx) ||
1734 (channels.tx_count > max.max_tx) ||
1735 (channels.combined_count > max.max_combined) ||
1736 (channels.other_count > max.max_other))
1739 /* ensure the new Rx count fits within the configured Rx flow
1740 * indirection table settings */
1741 if (netif_is_rxfh_configured(dev) &&
1742 !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) &&
1743 (channels.combined_count + channels.rx_count) <= max_rx_in_use)
1746 return dev->ethtool_ops->set_channels(dev, &channels);
1749 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1751 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
1753 if (!dev->ethtool_ops->get_pauseparam)
1756 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1758 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1763 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1765 struct ethtool_pauseparam pauseparam;
1767 if (!dev->ethtool_ops->set_pauseparam)
1770 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1773 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1776 static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1778 struct ethtool_test test;
1779 const struct ethtool_ops *ops = dev->ethtool_ops;
1783 if (!ops->self_test || !ops->get_sset_count)
1786 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
1789 WARN_ON(test_len == 0);
1791 if (copy_from_user(&test, useraddr, sizeof(test)))
1794 test.len = test_len;
1795 data = kmalloc(test_len * sizeof(u64), GFP_USER);
1799 ops->self_test(dev, &test, data);
1802 if (copy_to_user(useraddr, &test, sizeof(test)))
1804 useraddr += sizeof(test);
1805 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1814 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1816 struct ethtool_gstrings gstrings;
1820 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1823 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
1826 if (ret > S32_MAX / ETH_GSTRING_LEN)
1832 data = vzalloc(gstrings.len * ETH_GSTRING_LEN);
1836 __ethtool_get_strings(dev, gstrings.string_set, data);
1842 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1844 useraddr += sizeof(gstrings);
1846 copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1855 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1857 struct ethtool_value id;
1859 const struct ethtool_ops *ops = dev->ethtool_ops;
1862 if (!ops->set_phys_id)
1868 if (copy_from_user(&id, useraddr, sizeof(id)))
1871 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
1875 /* Drop the RTNL lock while waiting, but prevent reentry or
1876 * removal of the device.
1883 /* Driver will handle this itself */
1884 schedule_timeout_interruptible(
1885 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
1887 /* Driver expects to be called at twice the frequency in rc */
1888 int n = rc * 2, i, interval = HZ / n;
1890 /* Count down seconds */
1892 /* Count down iterations per second */
1896 rc = ops->set_phys_id(dev,
1897 (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
1901 schedule_timeout_interruptible(interval);
1902 } while (!signal_pending(current) && --i != 0);
1903 } while (!signal_pending(current) &&
1904 (id.data == 0 || --id.data != 0));
1911 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
1915 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1917 struct ethtool_stats stats;
1918 const struct ethtool_ops *ops = dev->ethtool_ops;
1922 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1925 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
1928 if (n_stats > S32_MAX / sizeof(u64))
1930 WARN_ON_ONCE(!n_stats);
1931 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1934 stats.n_stats = n_stats;
1936 data = vzalloc(n_stats * sizeof(u64));
1939 ops->get_ethtool_stats(dev, &stats, data);
1945 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1947 useraddr += sizeof(stats);
1948 if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
1957 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
1959 struct ethtool_stats stats;
1960 struct phy_device *phydev = dev->phydev;
1967 n_stats = phy_get_sset_count(phydev);
1970 if (n_stats > S32_MAX / sizeof(u64))
1972 if (WARN_ON_ONCE(!n_stats))
1975 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1978 stats.n_stats = n_stats;
1980 data = vzalloc(n_stats * sizeof(u64));
1984 mutex_lock(&phydev->lock);
1985 phydev->drv->get_stats(phydev, &stats, data);
1986 mutex_unlock(&phydev->lock);
1992 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1994 useraddr += sizeof(stats);
1995 if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
2004 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
2006 struct ethtool_perm_addr epaddr;
2008 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
2011 if (epaddr.size < dev->addr_len)
2013 epaddr.size = dev->addr_len;
2015 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
2017 useraddr += sizeof(epaddr);
2018 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
2023 static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
2024 u32 cmd, u32 (*actor)(struct net_device *))
2026 struct ethtool_value edata = { .cmd = cmd };
2031 edata.data = actor(dev);
2033 if (copy_to_user(useraddr, &edata, sizeof(edata)))
2038 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
2039 void (*actor)(struct net_device *, u32))
2041 struct ethtool_value edata;
2046 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2049 actor(dev, edata.data);
2053 static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
2054 int (*actor)(struct net_device *, u32))
2056 struct ethtool_value edata;
2061 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2064 return actor(dev, edata.data);
2067 static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
2068 char __user *useraddr)
2070 struct ethtool_flash efl;
2072 if (copy_from_user(&efl, useraddr, sizeof(efl)))
2075 if (!dev->ethtool_ops->flash_device)
2078 efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
2080 return dev->ethtool_ops->flash_device(dev, &efl);
2083 static int ethtool_set_dump(struct net_device *dev,
2084 void __user *useraddr)
2086 struct ethtool_dump dump;
2088 if (!dev->ethtool_ops->set_dump)
2091 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2094 return dev->ethtool_ops->set_dump(dev, &dump);
2097 static int ethtool_get_dump_flag(struct net_device *dev,
2098 void __user *useraddr)
2101 struct ethtool_dump dump;
2102 const struct ethtool_ops *ops = dev->ethtool_ops;
2104 if (!ops->get_dump_flag)
2107 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2110 ret = ops->get_dump_flag(dev, &dump);
2114 if (copy_to_user(useraddr, &dump, sizeof(dump)))
2119 static int ethtool_get_dump_data(struct net_device *dev,
2120 void __user *useraddr)
2124 struct ethtool_dump dump, tmp;
2125 const struct ethtool_ops *ops = dev->ethtool_ops;
2128 if (!ops->get_dump_data || !ops->get_dump_flag)
2131 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2134 memset(&tmp, 0, sizeof(tmp));
2135 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
2136 ret = ops->get_dump_flag(dev, &tmp);
2140 len = min(tmp.len, dump.len);
2144 /* Don't ever let the driver think there's more space available
2145 * than it requested with .get_dump_flag().
2149 /* Always allocate enough space to hold the whole thing so that the
2150 * driver does not need to check the length and bother with partial
2153 data = vzalloc(tmp.len);
2156 ret = ops->get_dump_data(dev, &dump, data);
2160 /* There are two sane possibilities:
2161 * 1. The driver's .get_dump_data() does not touch dump.len.
2162 * 2. Or it may set dump.len to how much it really writes, which
2163 * should be tmp.len (or len if it can do a partial dump).
2164 * In any case respond to userspace with the actual length of data
2167 WARN_ON(dump.len != len && dump.len != tmp.len);
2170 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
2174 useraddr += offsetof(struct ethtool_dump, data);
2175 if (copy_to_user(useraddr, data, len))
2182 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
2185 struct ethtool_ts_info info;
2186 const struct ethtool_ops *ops = dev->ethtool_ops;
2187 struct phy_device *phydev = dev->phydev;
2189 memset(&info, 0, sizeof(info));
2190 info.cmd = ETHTOOL_GET_TS_INFO;
2192 if (phydev && phydev->drv && phydev->drv->ts_info) {
2193 err = phydev->drv->ts_info(phydev, &info);
2194 } else if (ops->get_ts_info) {
2195 err = ops->get_ts_info(dev, &info);
2197 info.so_timestamping =
2198 SOF_TIMESTAMPING_RX_SOFTWARE |
2199 SOF_TIMESTAMPING_SOFTWARE;
2200 info.phc_index = -1;
2206 if (copy_to_user(useraddr, &info, sizeof(info)))
2212 static int __ethtool_get_module_info(struct net_device *dev,
2213 struct ethtool_modinfo *modinfo)
2215 const struct ethtool_ops *ops = dev->ethtool_ops;
2216 struct phy_device *phydev = dev->phydev;
2218 if (phydev && phydev->drv && phydev->drv->module_info)
2219 return phydev->drv->module_info(phydev, modinfo);
2221 if (ops->get_module_info)
2222 return ops->get_module_info(dev, modinfo);
2227 static int ethtool_get_module_info(struct net_device *dev,
2228 void __user *useraddr)
2231 struct ethtool_modinfo modinfo;
2233 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
2236 ret = __ethtool_get_module_info(dev, &modinfo);
2240 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
2246 static int __ethtool_get_module_eeprom(struct net_device *dev,
2247 struct ethtool_eeprom *ee, u8 *data)
2249 const struct ethtool_ops *ops = dev->ethtool_ops;
2250 struct phy_device *phydev = dev->phydev;
2252 if (phydev && phydev->drv && phydev->drv->module_eeprom)
2253 return phydev->drv->module_eeprom(phydev, ee, data);
2255 if (ops->get_module_eeprom)
2256 return ops->get_module_eeprom(dev, ee, data);
2261 static int ethtool_get_module_eeprom(struct net_device *dev,
2262 void __user *useraddr)
2265 struct ethtool_modinfo modinfo;
2267 ret = __ethtool_get_module_info(dev, &modinfo);
2271 return ethtool_get_any_eeprom(dev, useraddr,
2272 __ethtool_get_module_eeprom,
2273 modinfo.eeprom_len);
2276 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna)
2279 case ETHTOOL_RX_COPYBREAK:
2280 case ETHTOOL_TX_COPYBREAK:
2281 if (tuna->len != sizeof(u32) ||
2282 tuna->type_id != ETHTOOL_TUNABLE_U32)
2292 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr)
2295 struct ethtool_tunable tuna;
2296 const struct ethtool_ops *ops = dev->ethtool_ops;
2299 if (!ops->get_tunable)
2301 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2303 ret = ethtool_tunable_valid(&tuna);
2306 data = kmalloc(tuna.len, GFP_USER);
2309 ret = ops->get_tunable(dev, &tuna, data);
2312 useraddr += sizeof(tuna);
2314 if (copy_to_user(useraddr, data, tuna.len))
2323 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr)
2326 struct ethtool_tunable tuna;
2327 const struct ethtool_ops *ops = dev->ethtool_ops;
2330 if (!ops->set_tunable)
2332 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2334 ret = ethtool_tunable_valid(&tuna);
2337 useraddr += sizeof(tuna);
2338 data = memdup_user(useraddr, tuna.len);
2340 return PTR_ERR(data);
2341 ret = ops->set_tunable(dev, &tuna, data);
2347 static noinline_for_stack int
2348 ethtool_get_per_queue_coalesce(struct net_device *dev,
2349 void __user *useraddr,
2350 struct ethtool_per_queue_op *per_queue_opt)
2354 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2356 if (!dev->ethtool_ops->get_per_queue_coalesce)
2359 useraddr += sizeof(*per_queue_opt);
2361 bitmap_from_u32array(queue_mask,
2363 per_queue_opt->queue_mask,
2364 DIV_ROUND_UP(MAX_NUM_QUEUE, 32));
2366 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2367 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
2369 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce);
2372 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
2374 useraddr += sizeof(coalesce);
2380 static noinline_for_stack int
2381 ethtool_set_per_queue_coalesce(struct net_device *dev,
2382 void __user *useraddr,
2383 struct ethtool_per_queue_op *per_queue_opt)
2388 struct ethtool_coalesce *backup = NULL, *tmp = NULL;
2389 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2391 if ((!dev->ethtool_ops->set_per_queue_coalesce) ||
2392 (!dev->ethtool_ops->get_per_queue_coalesce))
2395 useraddr += sizeof(*per_queue_opt);
2397 bitmap_from_u32array(queue_mask,
2399 per_queue_opt->queue_mask,
2400 DIV_ROUND_UP(MAX_NUM_QUEUE, 32));
2401 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE);
2402 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL);
2406 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2407 struct ethtool_coalesce coalesce;
2409 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp);
2415 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) {
2420 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce);
2424 useraddr += sizeof(coalesce);
2430 for_each_set_bit(i, queue_mask, bit) {
2431 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp);
2440 static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev,
2441 void __user *useraddr, u32 sub_cmd)
2443 struct ethtool_per_queue_op per_queue_opt;
2445 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt)))
2448 if (per_queue_opt.sub_command != sub_cmd)
2451 switch (per_queue_opt.sub_command) {
2452 case ETHTOOL_GCOALESCE:
2453 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt);
2454 case ETHTOOL_SCOALESCE:
2455 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt);
2461 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna)
2464 case ETHTOOL_PHY_DOWNSHIFT:
2465 if (tuna->len != sizeof(u8) ||
2466 tuna->type_id != ETHTOOL_TUNABLE_U8)
2476 static int get_phy_tunable(struct net_device *dev, void __user *useraddr)
2479 struct ethtool_tunable tuna;
2480 struct phy_device *phydev = dev->phydev;
2483 if (!(phydev && phydev->drv && phydev->drv->get_tunable))
2486 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2488 ret = ethtool_phy_tunable_valid(&tuna);
2491 data = kmalloc(tuna.len, GFP_USER);
2494 mutex_lock(&phydev->lock);
2495 ret = phydev->drv->get_tunable(phydev, &tuna, data);
2496 mutex_unlock(&phydev->lock);
2499 useraddr += sizeof(tuna);
2501 if (copy_to_user(useraddr, data, tuna.len))
2510 static int set_phy_tunable(struct net_device *dev, void __user *useraddr)
2513 struct ethtool_tunable tuna;
2514 struct phy_device *phydev = dev->phydev;
2517 if (!(phydev && phydev->drv && phydev->drv->set_tunable))
2519 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2521 ret = ethtool_phy_tunable_valid(&tuna);
2524 useraddr += sizeof(tuna);
2525 data = memdup_user(useraddr, tuna.len);
2527 return PTR_ERR(data);
2528 mutex_lock(&phydev->lock);
2529 ret = phydev->drv->set_tunable(phydev, &tuna, data);
2530 mutex_unlock(&phydev->lock);
2536 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr)
2538 struct ethtool_fecparam fecparam = { ETHTOOL_GFECPARAM };
2541 if (!dev->ethtool_ops->get_fecparam)
2544 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam);
2548 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam)))
2553 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr)
2555 struct ethtool_fecparam fecparam;
2557 if (!dev->ethtool_ops->set_fecparam)
2560 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam)))
2563 return dev->ethtool_ops->set_fecparam(dev, &fecparam);
2566 /* The main entry point in this file. Called from net/core/dev_ioctl.c */
2568 int dev_ethtool(struct net *net, struct ifreq *ifr)
2570 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
2571 void __user *useraddr = ifr->ifr_data;
2572 u32 ethcmd, sub_cmd;
2574 netdev_features_t old_features;
2576 if (!dev || !netif_device_present(dev))
2579 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd)))
2582 if (ethcmd == ETHTOOL_PERQUEUE) {
2583 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd)))
2588 /* Allow some commands to be done by anyone */
2591 case ETHTOOL_GDRVINFO:
2592 case ETHTOOL_GMSGLVL:
2594 case ETHTOOL_GCOALESCE:
2595 case ETHTOOL_GRINGPARAM:
2596 case ETHTOOL_GPAUSEPARAM:
2597 case ETHTOOL_GRXCSUM:
2598 case ETHTOOL_GTXCSUM:
2600 case ETHTOOL_GSSET_INFO:
2601 case ETHTOOL_GSTRINGS:
2602 case ETHTOOL_GSTATS:
2603 case ETHTOOL_GPHYSTATS:
2605 case ETHTOOL_GPERMADDR:
2609 case ETHTOOL_GFLAGS:
2610 case ETHTOOL_GPFLAGS:
2612 case ETHTOOL_GRXRINGS:
2613 case ETHTOOL_GRXCLSRLCNT:
2614 case ETHTOOL_GRXCLSRULE:
2615 case ETHTOOL_GRXCLSRLALL:
2616 case ETHTOOL_GRXFHINDIR:
2618 case ETHTOOL_GFEATURES:
2619 case ETHTOOL_GCHANNELS:
2620 case ETHTOOL_GET_TS_INFO:
2622 case ETHTOOL_GTUNABLE:
2623 case ETHTOOL_PHY_GTUNABLE:
2624 case ETHTOOL_GLINKSETTINGS:
2625 case ETHTOOL_GFECPARAM:
2628 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
2632 if (dev->ethtool_ops->begin) {
2633 rc = dev->ethtool_ops->begin(dev);
2637 old_features = dev->features;
2641 rc = ethtool_get_settings(dev, useraddr);
2644 rc = ethtool_set_settings(dev, useraddr);
2646 case ETHTOOL_GDRVINFO:
2647 rc = ethtool_get_drvinfo(dev, useraddr);
2650 rc = ethtool_get_regs(dev, useraddr);
2653 rc = ethtool_get_wol(dev, useraddr);
2656 rc = ethtool_set_wol(dev, useraddr);
2658 case ETHTOOL_GMSGLVL:
2659 rc = ethtool_get_value(dev, useraddr, ethcmd,
2660 dev->ethtool_ops->get_msglevel);
2662 case ETHTOOL_SMSGLVL:
2663 rc = ethtool_set_value_void(dev, useraddr,
2664 dev->ethtool_ops->set_msglevel);
2667 rc = ethtool_get_eee(dev, useraddr);
2670 rc = ethtool_set_eee(dev, useraddr);
2672 case ETHTOOL_NWAY_RST:
2673 rc = ethtool_nway_reset(dev);
2676 rc = ethtool_get_link(dev, useraddr);
2678 case ETHTOOL_GEEPROM:
2679 rc = ethtool_get_eeprom(dev, useraddr);
2681 case ETHTOOL_SEEPROM:
2682 rc = ethtool_set_eeprom(dev, useraddr);
2684 case ETHTOOL_GCOALESCE:
2685 rc = ethtool_get_coalesce(dev, useraddr);
2687 case ETHTOOL_SCOALESCE:
2688 rc = ethtool_set_coalesce(dev, useraddr);
2690 case ETHTOOL_GRINGPARAM:
2691 rc = ethtool_get_ringparam(dev, useraddr);
2693 case ETHTOOL_SRINGPARAM:
2694 rc = ethtool_set_ringparam(dev, useraddr);
2696 case ETHTOOL_GPAUSEPARAM:
2697 rc = ethtool_get_pauseparam(dev, useraddr);
2699 case ETHTOOL_SPAUSEPARAM:
2700 rc = ethtool_set_pauseparam(dev, useraddr);
2703 rc = ethtool_self_test(dev, useraddr);
2705 case ETHTOOL_GSTRINGS:
2706 rc = ethtool_get_strings(dev, useraddr);
2708 case ETHTOOL_PHYS_ID:
2709 rc = ethtool_phys_id(dev, useraddr);
2711 case ETHTOOL_GSTATS:
2712 rc = ethtool_get_stats(dev, useraddr);
2714 case ETHTOOL_GPERMADDR:
2715 rc = ethtool_get_perm_addr(dev, useraddr);
2717 case ETHTOOL_GFLAGS:
2718 rc = ethtool_get_value(dev, useraddr, ethcmd,
2719 __ethtool_get_flags);
2721 case ETHTOOL_SFLAGS:
2722 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
2724 case ETHTOOL_GPFLAGS:
2725 rc = ethtool_get_value(dev, useraddr, ethcmd,
2726 dev->ethtool_ops->get_priv_flags);
2728 case ETHTOOL_SPFLAGS:
2729 rc = ethtool_set_value(dev, useraddr,
2730 dev->ethtool_ops->set_priv_flags);
2733 case ETHTOOL_GRXRINGS:
2734 case ETHTOOL_GRXCLSRLCNT:
2735 case ETHTOOL_GRXCLSRULE:
2736 case ETHTOOL_GRXCLSRLALL:
2737 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
2740 case ETHTOOL_SRXCLSRLDEL:
2741 case ETHTOOL_SRXCLSRLINS:
2742 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
2744 case ETHTOOL_FLASHDEV:
2745 rc = ethtool_flash_device(dev, useraddr);
2748 rc = ethtool_reset(dev, useraddr);
2750 case ETHTOOL_GSSET_INFO:
2751 rc = ethtool_get_sset_info(dev, useraddr);
2753 case ETHTOOL_GRXFHINDIR:
2754 rc = ethtool_get_rxfh_indir(dev, useraddr);
2756 case ETHTOOL_SRXFHINDIR:
2757 rc = ethtool_set_rxfh_indir(dev, useraddr);
2760 rc = ethtool_get_rxfh(dev, useraddr);
2763 rc = ethtool_set_rxfh(dev, useraddr);
2765 case ETHTOOL_GFEATURES:
2766 rc = ethtool_get_features(dev, useraddr);
2768 case ETHTOOL_SFEATURES:
2769 rc = ethtool_set_features(dev, useraddr);
2771 case ETHTOOL_GTXCSUM:
2772 case ETHTOOL_GRXCSUM:
2777 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
2779 case ETHTOOL_STXCSUM:
2780 case ETHTOOL_SRXCSUM:
2785 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
2787 case ETHTOOL_GCHANNELS:
2788 rc = ethtool_get_channels(dev, useraddr);
2790 case ETHTOOL_SCHANNELS:
2791 rc = ethtool_set_channels(dev, useraddr);
2793 case ETHTOOL_SET_DUMP:
2794 rc = ethtool_set_dump(dev, useraddr);
2796 case ETHTOOL_GET_DUMP_FLAG:
2797 rc = ethtool_get_dump_flag(dev, useraddr);
2799 case ETHTOOL_GET_DUMP_DATA:
2800 rc = ethtool_get_dump_data(dev, useraddr);
2802 case ETHTOOL_GET_TS_INFO:
2803 rc = ethtool_get_ts_info(dev, useraddr);
2805 case ETHTOOL_GMODULEINFO:
2806 rc = ethtool_get_module_info(dev, useraddr);
2808 case ETHTOOL_GMODULEEEPROM:
2809 rc = ethtool_get_module_eeprom(dev, useraddr);
2811 case ETHTOOL_GTUNABLE:
2812 rc = ethtool_get_tunable(dev, useraddr);
2814 case ETHTOOL_STUNABLE:
2815 rc = ethtool_set_tunable(dev, useraddr);
2817 case ETHTOOL_GPHYSTATS:
2818 rc = ethtool_get_phy_stats(dev, useraddr);
2820 case ETHTOOL_PERQUEUE:
2821 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd);
2823 case ETHTOOL_GLINKSETTINGS:
2824 rc = ethtool_get_link_ksettings(dev, useraddr);
2826 case ETHTOOL_SLINKSETTINGS:
2827 rc = ethtool_set_link_ksettings(dev, useraddr);
2829 case ETHTOOL_PHY_GTUNABLE:
2830 rc = get_phy_tunable(dev, useraddr);
2832 case ETHTOOL_PHY_STUNABLE:
2833 rc = set_phy_tunable(dev, useraddr);
2835 case ETHTOOL_GFECPARAM:
2836 rc = ethtool_get_fecparam(dev, useraddr);
2838 case ETHTOOL_SFECPARAM:
2839 rc = ethtool_set_fecparam(dev, useraddr);
2845 if (dev->ethtool_ops->complete)
2846 dev->ethtool_ops->complete(dev);
2848 if (old_features != dev->features)
2849 netdev_features_change(dev);