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/sfp.h>
26 #include <linux/slab.h>
27 #include <linux/rtnetlink.h>
28 #include <linux/sched/signal.h>
29 #include <linux/net.h>
30 #include <net/xdp_sock.h>
33 * Some useful ethtool_ops methods that're device independent.
34 * If we find that all drivers want to do the same thing here,
35 * we can turn these into dev_() function calls.
38 u32 ethtool_op_get_link(struct net_device *dev)
40 return netif_carrier_ok(dev) ? 1 : 0;
42 EXPORT_SYMBOL(ethtool_op_get_link);
44 int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info)
46 info->so_timestamping =
47 SOF_TIMESTAMPING_TX_SOFTWARE |
48 SOF_TIMESTAMPING_RX_SOFTWARE |
49 SOF_TIMESTAMPING_SOFTWARE;
53 EXPORT_SYMBOL(ethtool_op_get_ts_info);
55 /* Handlers for each ethtool command */
57 #define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32)
59 static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = {
60 [NETIF_F_SG_BIT] = "tx-scatter-gather",
61 [NETIF_F_IP_CSUM_BIT] = "tx-checksum-ipv4",
62 [NETIF_F_HW_CSUM_BIT] = "tx-checksum-ip-generic",
63 [NETIF_F_IPV6_CSUM_BIT] = "tx-checksum-ipv6",
64 [NETIF_F_HIGHDMA_BIT] = "highdma",
65 [NETIF_F_FRAGLIST_BIT] = "tx-scatter-gather-fraglist",
66 [NETIF_F_HW_VLAN_CTAG_TX_BIT] = "tx-vlan-hw-insert",
68 [NETIF_F_HW_VLAN_CTAG_RX_BIT] = "rx-vlan-hw-parse",
69 [NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-filter",
70 [NETIF_F_HW_VLAN_STAG_TX_BIT] = "tx-vlan-stag-hw-insert",
71 [NETIF_F_HW_VLAN_STAG_RX_BIT] = "rx-vlan-stag-hw-parse",
72 [NETIF_F_HW_VLAN_STAG_FILTER_BIT] = "rx-vlan-stag-filter",
73 [NETIF_F_VLAN_CHALLENGED_BIT] = "vlan-challenged",
74 [NETIF_F_GSO_BIT] = "tx-generic-segmentation",
75 [NETIF_F_LLTX_BIT] = "tx-lockless",
76 [NETIF_F_NETNS_LOCAL_BIT] = "netns-local",
77 [NETIF_F_GRO_BIT] = "rx-gro",
78 [NETIF_F_GRO_HW_BIT] = "rx-gro-hw",
79 [NETIF_F_LRO_BIT] = "rx-lro",
81 [NETIF_F_TSO_BIT] = "tx-tcp-segmentation",
82 [NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust",
83 [NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation",
84 [NETIF_F_TSO_MANGLEID_BIT] = "tx-tcp-mangleid-segmentation",
85 [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation",
86 [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation",
87 [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation",
88 [NETIF_F_GSO_GRE_CSUM_BIT] = "tx-gre-csum-segmentation",
89 [NETIF_F_GSO_IPXIP4_BIT] = "tx-ipxip4-segmentation",
90 [NETIF_F_GSO_IPXIP6_BIT] = "tx-ipxip6-segmentation",
91 [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation",
92 [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation",
93 [NETIF_F_GSO_PARTIAL_BIT] = "tx-gso-partial",
94 [NETIF_F_GSO_SCTP_BIT] = "tx-sctp-segmentation",
95 [NETIF_F_GSO_ESP_BIT] = "tx-esp-segmentation",
96 [NETIF_F_GSO_UDP_L4_BIT] = "tx-udp-segmentation",
98 [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc",
99 [NETIF_F_SCTP_CRC_BIT] = "tx-checksum-sctp",
100 [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu",
101 [NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter",
102 [NETIF_F_RXHASH_BIT] = "rx-hashing",
103 [NETIF_F_RXCSUM_BIT] = "rx-checksum",
104 [NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy",
105 [NETIF_F_LOOPBACK_BIT] = "loopback",
106 [NETIF_F_RXFCS_BIT] = "rx-fcs",
107 [NETIF_F_RXALL_BIT] = "rx-all",
108 [NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload",
109 [NETIF_F_HW_TC_BIT] = "hw-tc-offload",
110 [NETIF_F_HW_ESP_BIT] = "esp-hw-offload",
111 [NETIF_F_HW_ESP_TX_CSUM_BIT] = "esp-tx-csum-hw-offload",
112 [NETIF_F_RX_UDP_TUNNEL_PORT_BIT] = "rx-udp_tunnel-port-offload",
113 [NETIF_F_HW_TLS_RECORD_BIT] = "tls-hw-record",
114 [NETIF_F_HW_TLS_TX_BIT] = "tls-hw-tx-offload",
115 [NETIF_F_HW_TLS_RX_BIT] = "tls-hw-rx-offload",
119 rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = {
120 [ETH_RSS_HASH_TOP_BIT] = "toeplitz",
121 [ETH_RSS_HASH_XOR_BIT] = "xor",
122 [ETH_RSS_HASH_CRC32_BIT] = "crc32",
126 tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
127 [ETHTOOL_ID_UNSPEC] = "Unspec",
128 [ETHTOOL_RX_COPYBREAK] = "rx-copybreak",
129 [ETHTOOL_TX_COPYBREAK] = "tx-copybreak",
130 [ETHTOOL_PFC_PREVENTION_TOUT] = "pfc-prevention-tout",
134 phy_tunable_strings[__ETHTOOL_PHY_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
135 [ETHTOOL_ID_UNSPEC] = "Unspec",
136 [ETHTOOL_PHY_DOWNSHIFT] = "phy-downshift",
139 static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
141 struct ethtool_gfeatures cmd = {
142 .cmd = ETHTOOL_GFEATURES,
143 .size = ETHTOOL_DEV_FEATURE_WORDS,
145 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
146 u32 __user *sizeaddr;
150 /* in case feature bits run out again */
151 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t));
153 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
154 features[i].available = (u32)(dev->hw_features >> (32 * i));
155 features[i].requested = (u32)(dev->wanted_features >> (32 * i));
156 features[i].active = (u32)(dev->features >> (32 * i));
157 features[i].never_changed =
158 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i));
161 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
162 if (get_user(copy_size, sizeaddr))
165 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
166 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
168 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
170 useraddr += sizeof(cmd);
171 if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
177 static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
179 struct ethtool_sfeatures cmd;
180 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
181 netdev_features_t wanted = 0, valid = 0;
184 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
186 useraddr += sizeof(cmd);
188 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
191 if (copy_from_user(features, useraddr, sizeof(features)))
194 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
195 valid |= (netdev_features_t)features[i].valid << (32 * i);
196 wanted |= (netdev_features_t)features[i].requested << (32 * i);
199 if (valid & ~NETIF_F_ETHTOOL_BITS)
202 if (valid & ~dev->hw_features) {
203 valid &= dev->hw_features;
204 ret |= ETHTOOL_F_UNSUPPORTED;
207 dev->wanted_features &= ~valid;
208 dev->wanted_features |= wanted & valid;
209 __netdev_update_features(dev);
211 if ((dev->wanted_features ^ dev->features) & valid)
212 ret |= ETHTOOL_F_WISH;
217 static int __ethtool_get_sset_count(struct net_device *dev, int sset)
219 const struct ethtool_ops *ops = dev->ethtool_ops;
221 if (sset == ETH_SS_FEATURES)
222 return ARRAY_SIZE(netdev_features_strings);
224 if (sset == ETH_SS_RSS_HASH_FUNCS)
225 return ARRAY_SIZE(rss_hash_func_strings);
227 if (sset == ETH_SS_TUNABLES)
228 return ARRAY_SIZE(tunable_strings);
230 if (sset == ETH_SS_PHY_TUNABLES)
231 return ARRAY_SIZE(phy_tunable_strings);
233 if (sset == ETH_SS_PHY_STATS && dev->phydev &&
234 !ops->get_ethtool_phy_stats)
235 return phy_ethtool_get_sset_count(dev->phydev);
237 if (ops->get_sset_count && ops->get_strings)
238 return ops->get_sset_count(dev, sset);
243 static void __ethtool_get_strings(struct net_device *dev,
244 u32 stringset, u8 *data)
246 const struct ethtool_ops *ops = dev->ethtool_ops;
248 if (stringset == ETH_SS_FEATURES)
249 memcpy(data, netdev_features_strings,
250 sizeof(netdev_features_strings));
251 else if (stringset == ETH_SS_RSS_HASH_FUNCS)
252 memcpy(data, rss_hash_func_strings,
253 sizeof(rss_hash_func_strings));
254 else if (stringset == ETH_SS_TUNABLES)
255 memcpy(data, tunable_strings, sizeof(tunable_strings));
256 else if (stringset == ETH_SS_PHY_TUNABLES)
257 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings));
258 else if (stringset == ETH_SS_PHY_STATS && dev->phydev &&
259 !ops->get_ethtool_phy_stats)
260 phy_ethtool_get_strings(dev->phydev, data);
262 /* ops->get_strings is valid because checked earlier */
263 ops->get_strings(dev, stringset, data);
266 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd)
268 /* feature masks of legacy discrete ethtool ops */
271 case ETHTOOL_GTXCSUM:
272 case ETHTOOL_STXCSUM:
273 return NETIF_F_CSUM_MASK | NETIF_F_SCTP_CRC;
274 case ETHTOOL_GRXCSUM:
275 case ETHTOOL_SRXCSUM:
276 return NETIF_F_RXCSUM;
282 return NETIF_F_ALL_TSO;
294 static int ethtool_get_one_feature(struct net_device *dev,
295 char __user *useraddr, u32 ethcmd)
297 netdev_features_t mask = ethtool_get_feature_mask(ethcmd);
298 struct ethtool_value edata = {
300 .data = !!(dev->features & mask),
303 if (copy_to_user(useraddr, &edata, sizeof(edata)))
308 static int ethtool_set_one_feature(struct net_device *dev,
309 void __user *useraddr, u32 ethcmd)
311 struct ethtool_value edata;
312 netdev_features_t mask;
314 if (copy_from_user(&edata, useraddr, sizeof(edata)))
317 mask = ethtool_get_feature_mask(ethcmd);
318 mask &= dev->hw_features;
323 dev->wanted_features |= mask;
325 dev->wanted_features &= ~mask;
327 __netdev_update_features(dev);
332 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
333 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
334 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
335 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
338 static u32 __ethtool_get_flags(struct net_device *dev)
342 if (dev->features & NETIF_F_LRO)
343 flags |= ETH_FLAG_LRO;
344 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
345 flags |= ETH_FLAG_RXVLAN;
346 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX)
347 flags |= ETH_FLAG_TXVLAN;
348 if (dev->features & NETIF_F_NTUPLE)
349 flags |= ETH_FLAG_NTUPLE;
350 if (dev->features & NETIF_F_RXHASH)
351 flags |= ETH_FLAG_RXHASH;
356 static int __ethtool_set_flags(struct net_device *dev, u32 data)
358 netdev_features_t features = 0, changed;
360 if (data & ~ETH_ALL_FLAGS)
363 if (data & ETH_FLAG_LRO)
364 features |= NETIF_F_LRO;
365 if (data & ETH_FLAG_RXVLAN)
366 features |= NETIF_F_HW_VLAN_CTAG_RX;
367 if (data & ETH_FLAG_TXVLAN)
368 features |= NETIF_F_HW_VLAN_CTAG_TX;
369 if (data & ETH_FLAG_NTUPLE)
370 features |= NETIF_F_NTUPLE;
371 if (data & ETH_FLAG_RXHASH)
372 features |= NETIF_F_RXHASH;
374 /* allow changing only bits set in hw_features */
375 changed = (features ^ dev->features) & ETH_ALL_FEATURES;
376 if (changed & ~dev->hw_features)
377 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
379 dev->wanted_features =
380 (dev->wanted_features & ~changed) | (features & changed);
382 __netdev_update_features(dev);
387 /* Given two link masks, AND them together and save the result in dst. */
388 void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst,
389 struct ethtool_link_ksettings *src)
391 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS);
392 unsigned int idx = 0;
394 for (; idx < size; idx++) {
395 dst->link_modes.supported[idx] &=
396 src->link_modes.supported[idx];
397 dst->link_modes.advertising[idx] &=
398 src->link_modes.advertising[idx];
401 EXPORT_SYMBOL(ethtool_intersect_link_masks);
403 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
406 bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS);
409 EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode);
411 /* return false if src had higher bits set. lower bits always updated. */
412 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
413 const unsigned long *src)
417 /* TODO: following test will soon always be true */
418 if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) {
419 __ETHTOOL_DECLARE_LINK_MODE_MASK(ext);
421 bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
422 bitmap_fill(ext, 32);
423 bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
424 if (bitmap_intersects(ext, src,
425 __ETHTOOL_LINK_MODE_MASK_NBITS)) {
426 /* src mask goes beyond bit 31 */
430 *legacy_u32 = src[0];
433 EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32);
435 /* return false if legacy contained non-0 deprecated fields
436 * maxtxpkt/maxrxpkt. rest of ksettings always updated
439 convert_legacy_settings_to_link_ksettings(
440 struct ethtool_link_ksettings *link_ksettings,
441 const struct ethtool_cmd *legacy_settings)
445 memset(link_ksettings, 0, sizeof(*link_ksettings));
447 /* This is used to tell users that driver is still using these
448 * deprecated legacy fields, and they should not use
449 * %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS
451 if (legacy_settings->maxtxpkt ||
452 legacy_settings->maxrxpkt)
455 ethtool_convert_legacy_u32_to_link_mode(
456 link_ksettings->link_modes.supported,
457 legacy_settings->supported);
458 ethtool_convert_legacy_u32_to_link_mode(
459 link_ksettings->link_modes.advertising,
460 legacy_settings->advertising);
461 ethtool_convert_legacy_u32_to_link_mode(
462 link_ksettings->link_modes.lp_advertising,
463 legacy_settings->lp_advertising);
464 link_ksettings->base.speed
465 = ethtool_cmd_speed(legacy_settings);
466 link_ksettings->base.duplex
467 = legacy_settings->duplex;
468 link_ksettings->base.port
469 = legacy_settings->port;
470 link_ksettings->base.phy_address
471 = legacy_settings->phy_address;
472 link_ksettings->base.autoneg
473 = legacy_settings->autoneg;
474 link_ksettings->base.mdio_support
475 = legacy_settings->mdio_support;
476 link_ksettings->base.eth_tp_mdix
477 = legacy_settings->eth_tp_mdix;
478 link_ksettings->base.eth_tp_mdix_ctrl
479 = legacy_settings->eth_tp_mdix_ctrl;
483 /* return false if ksettings link modes had higher bits
484 * set. legacy_settings always updated (best effort)
487 convert_link_ksettings_to_legacy_settings(
488 struct ethtool_cmd *legacy_settings,
489 const struct ethtool_link_ksettings *link_ksettings)
493 memset(legacy_settings, 0, sizeof(*legacy_settings));
494 /* this also clears the deprecated fields in legacy structure:
500 retval &= ethtool_convert_link_mode_to_legacy_u32(
501 &legacy_settings->supported,
502 link_ksettings->link_modes.supported);
503 retval &= ethtool_convert_link_mode_to_legacy_u32(
504 &legacy_settings->advertising,
505 link_ksettings->link_modes.advertising);
506 retval &= ethtool_convert_link_mode_to_legacy_u32(
507 &legacy_settings->lp_advertising,
508 link_ksettings->link_modes.lp_advertising);
509 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed);
510 legacy_settings->duplex
511 = link_ksettings->base.duplex;
512 legacy_settings->port
513 = link_ksettings->base.port;
514 legacy_settings->phy_address
515 = link_ksettings->base.phy_address;
516 legacy_settings->autoneg
517 = link_ksettings->base.autoneg;
518 legacy_settings->mdio_support
519 = link_ksettings->base.mdio_support;
520 legacy_settings->eth_tp_mdix
521 = link_ksettings->base.eth_tp_mdix;
522 legacy_settings->eth_tp_mdix_ctrl
523 = link_ksettings->base.eth_tp_mdix_ctrl;
524 legacy_settings->transceiver
525 = link_ksettings->base.transceiver;
529 /* number of 32-bit words to store the user's link mode bitmaps */
530 #define __ETHTOOL_LINK_MODE_MASK_NU32 \
531 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
533 /* layout of the struct passed from/to userland */
534 struct ethtool_link_usettings {
535 struct ethtool_link_settings base;
537 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32];
538 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
539 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
543 /* Internal kernel helper to query a device ethtool_link_settings. */
544 int __ethtool_get_link_ksettings(struct net_device *dev,
545 struct ethtool_link_ksettings *link_ksettings)
549 if (!dev->ethtool_ops->get_link_ksettings)
552 memset(link_ksettings, 0, sizeof(*link_ksettings));
553 return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings);
555 EXPORT_SYMBOL(__ethtool_get_link_ksettings);
557 /* convert ethtool_link_usettings in user space to a kernel internal
558 * ethtool_link_ksettings. return 0 on success, errno on error.
560 static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to,
561 const void __user *from)
563 struct ethtool_link_usettings link_usettings;
565 if (copy_from_user(&link_usettings, from, sizeof(link_usettings)))
568 memcpy(&to->base, &link_usettings.base, sizeof(to->base));
569 bitmap_from_arr32(to->link_modes.supported,
570 link_usettings.link_modes.supported,
571 __ETHTOOL_LINK_MODE_MASK_NBITS);
572 bitmap_from_arr32(to->link_modes.advertising,
573 link_usettings.link_modes.advertising,
574 __ETHTOOL_LINK_MODE_MASK_NBITS);
575 bitmap_from_arr32(to->link_modes.lp_advertising,
576 link_usettings.link_modes.lp_advertising,
577 __ETHTOOL_LINK_MODE_MASK_NBITS);
582 /* convert a kernel internal ethtool_link_ksettings to
583 * ethtool_link_usettings in user space. return 0 on success, errno on
587 store_link_ksettings_for_user(void __user *to,
588 const struct ethtool_link_ksettings *from)
590 struct ethtool_link_usettings link_usettings;
592 memcpy(&link_usettings.base, &from->base, sizeof(link_usettings));
593 bitmap_to_arr32(link_usettings.link_modes.supported,
594 from->link_modes.supported,
595 __ETHTOOL_LINK_MODE_MASK_NBITS);
596 bitmap_to_arr32(link_usettings.link_modes.advertising,
597 from->link_modes.advertising,
598 __ETHTOOL_LINK_MODE_MASK_NBITS);
599 bitmap_to_arr32(link_usettings.link_modes.lp_advertising,
600 from->link_modes.lp_advertising,
601 __ETHTOOL_LINK_MODE_MASK_NBITS);
603 if (copy_to_user(to, &link_usettings, sizeof(link_usettings)))
609 /* Query device for its ethtool_link_settings. */
610 static int ethtool_get_link_ksettings(struct net_device *dev,
611 void __user *useraddr)
614 struct ethtool_link_ksettings link_ksettings;
617 if (!dev->ethtool_ops->get_link_ksettings)
620 /* handle bitmap nbits handshake */
621 if (copy_from_user(&link_ksettings.base, useraddr,
622 sizeof(link_ksettings.base)))
625 if (__ETHTOOL_LINK_MODE_MASK_NU32
626 != link_ksettings.base.link_mode_masks_nwords) {
627 /* wrong link mode nbits requested */
628 memset(&link_ksettings, 0, sizeof(link_ksettings));
629 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
630 /* send back number of words required as negative val */
631 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX,
632 "need too many bits for link modes!");
633 link_ksettings.base.link_mode_masks_nwords
634 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32);
636 /* copy the base fields back to user, not the link
639 if (copy_to_user(useraddr, &link_ksettings.base,
640 sizeof(link_ksettings.base)))
646 /* handshake successful: user/kernel agree on
647 * link_mode_masks_nwords
650 memset(&link_ksettings, 0, sizeof(link_ksettings));
651 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
655 /* make sure we tell the right values to user */
656 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
657 link_ksettings.base.link_mode_masks_nwords
658 = __ETHTOOL_LINK_MODE_MASK_NU32;
660 return store_link_ksettings_for_user(useraddr, &link_ksettings);
663 /* Update device ethtool_link_settings. */
664 static int ethtool_set_link_ksettings(struct net_device *dev,
665 void __user *useraddr)
668 struct ethtool_link_ksettings link_ksettings;
672 if (!dev->ethtool_ops->set_link_ksettings)
675 /* make sure nbits field has expected value */
676 if (copy_from_user(&link_ksettings.base, useraddr,
677 sizeof(link_ksettings.base)))
680 if (__ETHTOOL_LINK_MODE_MASK_NU32
681 != link_ksettings.base.link_mode_masks_nwords)
684 /* copy the whole structure, now that we know it has expected
687 err = load_link_ksettings_from_user(&link_ksettings, useraddr);
691 /* re-check nwords field, just in case */
692 if (__ETHTOOL_LINK_MODE_MASK_NU32
693 != link_ksettings.base.link_mode_masks_nwords)
696 return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
699 /* Query device for its ethtool_cmd settings.
701 * Backward compatibility note: for compatibility with legacy ethtool, this is
702 * now implemented via get_link_ksettings. When driver reports higher link mode
703 * bits, a kernel warning is logged once (with name of 1st driver/device) to
704 * recommend user to upgrade ethtool, but the command is successful (only the
705 * lower link mode bits reported back to user). Deprecated fields from
706 * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero.
708 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
710 struct ethtool_link_ksettings link_ksettings;
711 struct ethtool_cmd cmd;
715 if (!dev->ethtool_ops->get_link_ksettings)
718 memset(&link_ksettings, 0, sizeof(link_ksettings));
719 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
722 convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings);
724 /* send a sensible cmd tag back to user */
725 cmd.cmd = ETHTOOL_GSET;
727 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
733 /* Update device link settings with given ethtool_cmd.
735 * Backward compatibility note: for compatibility with legacy ethtool, this is
736 * now always implemented via set_link_settings. When user's request updates
737 * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
738 * warning is logged once (with name of 1st driver/device) to recommend user to
739 * upgrade ethtool, and the request is rejected.
741 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
743 struct ethtool_link_ksettings link_ksettings;
744 struct ethtool_cmd cmd;
748 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
750 if (!dev->ethtool_ops->set_link_ksettings)
753 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd))
755 link_ksettings.base.link_mode_masks_nwords =
756 __ETHTOOL_LINK_MODE_MASK_NU32;
757 return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
760 static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
761 void __user *useraddr)
763 struct ethtool_drvinfo info;
764 const struct ethtool_ops *ops = dev->ethtool_ops;
766 memset(&info, 0, sizeof(info));
767 info.cmd = ETHTOOL_GDRVINFO;
768 if (ops->get_drvinfo) {
769 ops->get_drvinfo(dev, &info);
770 } else if (dev->dev.parent && dev->dev.parent->driver) {
771 strlcpy(info.bus_info, dev_name(dev->dev.parent),
772 sizeof(info.bus_info));
773 strlcpy(info.driver, dev->dev.parent->driver->name,
774 sizeof(info.driver));
780 * this method of obtaining string set info is deprecated;
781 * Use ETHTOOL_GSSET_INFO instead.
783 if (ops->get_sset_count) {
786 rc = ops->get_sset_count(dev, ETH_SS_TEST);
788 info.testinfo_len = rc;
789 rc = ops->get_sset_count(dev, ETH_SS_STATS);
792 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
794 info.n_priv_flags = rc;
796 if (ops->get_regs_len)
797 info.regdump_len = ops->get_regs_len(dev);
798 if (ops->get_eeprom_len)
799 info.eedump_len = ops->get_eeprom_len(dev);
801 if (copy_to_user(useraddr, &info, sizeof(info)))
806 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
807 void __user *useraddr)
809 struct ethtool_sset_info info;
811 int i, idx = 0, n_bits = 0, ret, rc;
812 u32 *info_buf = NULL;
814 if (copy_from_user(&info, useraddr, sizeof(info)))
817 /* store copy of mask, because we zero struct later on */
818 sset_mask = info.sset_mask;
822 /* calculate size of return buffer */
823 n_bits = hweight64(sset_mask);
825 memset(&info, 0, sizeof(info));
826 info.cmd = ETHTOOL_GSSET_INFO;
828 info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER);
833 * fill return buffer based on input bitmask and successful
834 * get_sset_count return
836 for (i = 0; i < 64; i++) {
837 if (!(sset_mask & (1ULL << i)))
840 rc = __ethtool_get_sset_count(dev, i);
842 info.sset_mask |= (1ULL << i);
843 info_buf[idx++] = rc;
848 if (copy_to_user(useraddr, &info, sizeof(info)))
851 useraddr += offsetof(struct ethtool_sset_info, data);
852 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
862 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
863 u32 cmd, void __user *useraddr)
865 struct ethtool_rxnfc info;
866 size_t info_size = sizeof(info);
869 if (!dev->ethtool_ops->set_rxnfc)
872 /* struct ethtool_rxnfc was originally defined for
873 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
874 * members. User-space might still be using that
876 if (cmd == ETHTOOL_SRXFH)
877 info_size = (offsetof(struct ethtool_rxnfc, data) +
880 if (copy_from_user(&info, useraddr, info_size))
883 rc = dev->ethtool_ops->set_rxnfc(dev, &info);
887 if (cmd == ETHTOOL_SRXCLSRLINS &&
888 copy_to_user(useraddr, &info, info_size))
894 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
895 u32 cmd, void __user *useraddr)
897 struct ethtool_rxnfc info;
898 size_t info_size = sizeof(info);
899 const struct ethtool_ops *ops = dev->ethtool_ops;
901 void *rule_buf = NULL;
906 /* struct ethtool_rxnfc was originally defined for
907 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
908 * members. User-space might still be using that
910 if (cmd == ETHTOOL_GRXFH)
911 info_size = (offsetof(struct ethtool_rxnfc, data) +
914 if (copy_from_user(&info, useraddr, info_size))
917 /* If FLOW_RSS was requested then user-space must be using the
918 * new definition, as FLOW_RSS is newer.
920 if (cmd == ETHTOOL_GRXFH && info.flow_type & FLOW_RSS) {
921 info_size = sizeof(info);
922 if (copy_from_user(&info, useraddr, info_size))
924 /* Since malicious users may modify the original data,
925 * we need to check whether FLOW_RSS is still requested.
927 if (!(info.flow_type & FLOW_RSS))
934 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
935 if (info.rule_cnt > 0) {
936 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
937 rule_buf = kcalloc(info.rule_cnt, sizeof(u32),
944 ret = ops->get_rxnfc(dev, &info, rule_buf);
949 if (copy_to_user(useraddr, &info, info_size))
953 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
954 if (copy_to_user(useraddr, rule_buf,
955 info.rule_cnt * sizeof(u32)))
966 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr,
967 struct ethtool_rxnfc *rx_rings,
972 if (copy_from_user(indir, useraddr, size * sizeof(indir[0])))
975 /* Validate ring indices */
976 for (i = 0; i < size; i++)
977 if (indir[i] >= rx_rings->data)
983 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly;
985 void netdev_rss_key_fill(void *buffer, size_t len)
987 BUG_ON(len > sizeof(netdev_rss_key));
988 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key));
989 memcpy(buffer, netdev_rss_key, len);
991 EXPORT_SYMBOL(netdev_rss_key_fill);
993 static int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max)
995 u32 dev_size, current_max = 0;
999 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1000 !dev->ethtool_ops->get_rxfh)
1002 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1006 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1010 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1015 current_max = max(current_max, indir[dev_size]);
1024 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
1025 void __user *useraddr)
1027 u32 user_size, dev_size;
1031 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1032 !dev->ethtool_ops->get_rxfh)
1034 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1038 if (copy_from_user(&user_size,
1039 useraddr + offsetof(struct ethtool_rxfh_indir, size),
1043 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
1044 &dev_size, sizeof(dev_size)))
1047 /* If the user buffer size is 0, this is just a query for the
1048 * device table size. Otherwise, if it's smaller than the
1049 * device table size it's an error.
1051 if (user_size < dev_size)
1052 return user_size == 0 ? 0 : -EINVAL;
1054 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1058 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1062 if (copy_to_user(useraddr +
1063 offsetof(struct ethtool_rxfh_indir, ring_index[0]),
1064 indir, dev_size * sizeof(indir[0])))
1072 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
1073 void __user *useraddr)
1075 struct ethtool_rxnfc rx_rings;
1076 u32 user_size, dev_size, i;
1078 const struct ethtool_ops *ops = dev->ethtool_ops;
1080 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]);
1082 if (!ops->get_rxfh_indir_size || !ops->set_rxfh ||
1086 dev_size = ops->get_rxfh_indir_size(dev);
1090 if (copy_from_user(&user_size,
1091 useraddr + offsetof(struct ethtool_rxfh_indir, size),
1095 if (user_size != 0 && user_size != dev_size)
1098 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1102 rx_rings.cmd = ETHTOOL_GRXRINGS;
1103 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1107 if (user_size == 0) {
1108 for (i = 0; i < dev_size; i++)
1109 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1111 ret = ethtool_copy_validate_indir(indir,
1112 useraddr + ringidx_offset,
1119 ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE);
1123 /* indicate whether rxfh was set to default */
1125 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1127 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1134 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
1135 void __user *useraddr)
1138 const struct ethtool_ops *ops = dev->ethtool_ops;
1139 u32 user_indir_size, user_key_size;
1140 u32 dev_indir_size = 0, dev_key_size = 0;
1141 struct ethtool_rxfh rxfh;
1152 if (ops->get_rxfh_indir_size)
1153 dev_indir_size = ops->get_rxfh_indir_size(dev);
1154 if (ops->get_rxfh_key_size)
1155 dev_key_size = ops->get_rxfh_key_size(dev);
1157 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
1159 user_indir_size = rxfh.indir_size;
1160 user_key_size = rxfh.key_size;
1162 /* Check that reserved fields are 0 for now */
1163 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32)
1165 /* Most drivers don't handle rss_context, check it's 0 as well */
1166 if (rxfh.rss_context && !ops->get_rxfh_context)
1169 rxfh.indir_size = dev_indir_size;
1170 rxfh.key_size = dev_key_size;
1171 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh)))
1174 if ((user_indir_size && (user_indir_size != dev_indir_size)) ||
1175 (user_key_size && (user_key_size != dev_key_size)))
1178 indir_bytes = user_indir_size * sizeof(indir[0]);
1179 total_size = indir_bytes + user_key_size;
1180 rss_config = kzalloc(total_size, GFP_USER);
1184 if (user_indir_size)
1185 indir = (u32 *)rss_config;
1188 hkey = rss_config + indir_bytes;
1190 if (rxfh.rss_context)
1191 ret = dev->ethtool_ops->get_rxfh_context(dev, indir, hkey,
1195 ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc);
1199 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc),
1200 &dev_hfunc, sizeof(rxfh.hfunc))) {
1202 } else if (copy_to_user(useraddr +
1203 offsetof(struct ethtool_rxfh, rss_config[0]),
1204 rss_config, total_size)) {
1213 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
1214 void __user *useraddr)
1217 const struct ethtool_ops *ops = dev->ethtool_ops;
1218 struct ethtool_rxnfc rx_rings;
1219 struct ethtool_rxfh rxfh;
1220 u32 dev_indir_size = 0, dev_key_size = 0, i;
1221 u32 *indir = NULL, indir_bytes = 0;
1224 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]);
1225 bool delete = false;
1227 if (!ops->get_rxnfc || !ops->set_rxfh)
1230 if (ops->get_rxfh_indir_size)
1231 dev_indir_size = ops->get_rxfh_indir_size(dev);
1232 if (ops->get_rxfh_key_size)
1233 dev_key_size = ops->get_rxfh_key_size(dev);
1235 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
1238 /* Check that reserved fields are 0 for now */
1239 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32)
1241 /* Most drivers don't handle rss_context, check it's 0 as well */
1242 if (rxfh.rss_context && !ops->set_rxfh_context)
1245 /* If either indir, hash key or function is valid, proceed further.
1246 * Must request at least one change: indir size, hash key or function.
1248 if ((rxfh.indir_size &&
1249 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE &&
1250 rxfh.indir_size != dev_indir_size) ||
1251 (rxfh.key_size && (rxfh.key_size != dev_key_size)) ||
1252 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE &&
1253 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE))
1256 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1257 indir_bytes = dev_indir_size * sizeof(indir[0]);
1259 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER);
1263 rx_rings.cmd = ETHTOOL_GRXRINGS;
1264 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1268 /* rxfh.indir_size == 0 means reset the indir table to default (master
1269 * context) or delete the context (other RSS contexts).
1270 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
1272 if (rxfh.indir_size &&
1273 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) {
1274 indir = (u32 *)rss_config;
1275 ret = ethtool_copy_validate_indir(indir,
1276 useraddr + rss_cfg_offset,
1281 } else if (rxfh.indir_size == 0) {
1282 if (rxfh.rss_context == 0) {
1283 indir = (u32 *)rss_config;
1284 for (i = 0; i < dev_indir_size; i++)
1285 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1291 if (rxfh.key_size) {
1292 hkey = rss_config + indir_bytes;
1293 if (copy_from_user(hkey,
1294 useraddr + rss_cfg_offset + indir_bytes,
1301 if (rxfh.rss_context)
1302 ret = ops->set_rxfh_context(dev, indir, hkey, rxfh.hfunc,
1303 &rxfh.rss_context, delete);
1305 ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc);
1309 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context),
1310 &rxfh.rss_context, sizeof(rxfh.rss_context)))
1313 if (!rxfh.rss_context) {
1314 /* indicate whether rxfh was set to default */
1315 if (rxfh.indir_size == 0)
1316 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1317 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1318 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1326 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
1328 struct ethtool_regs regs;
1329 const struct ethtool_ops *ops = dev->ethtool_ops;
1333 if (!ops->get_regs || !ops->get_regs_len)
1336 if (copy_from_user(®s, useraddr, sizeof(regs)))
1339 reglen = ops->get_regs_len(dev);
1340 if (regs.len > reglen)
1345 regbuf = vzalloc(reglen);
1350 ops->get_regs(dev, ®s, regbuf);
1353 if (copy_to_user(useraddr, ®s, sizeof(regs)))
1355 useraddr += offsetof(struct ethtool_regs, data);
1356 if (regbuf && copy_to_user(useraddr, regbuf, regs.len))
1365 static int ethtool_reset(struct net_device *dev, char __user *useraddr)
1367 struct ethtool_value reset;
1370 if (!dev->ethtool_ops->reset)
1373 if (copy_from_user(&reset, useraddr, sizeof(reset)))
1376 ret = dev->ethtool_ops->reset(dev, &reset.data);
1380 if (copy_to_user(useraddr, &reset, sizeof(reset)))
1385 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
1387 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
1389 if (!dev->ethtool_ops->get_wol)
1392 dev->ethtool_ops->get_wol(dev, &wol);
1394 if (copy_to_user(useraddr, &wol, sizeof(wol)))
1399 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
1401 struct ethtool_wolinfo wol;
1404 if (!dev->ethtool_ops->set_wol)
1407 if (copy_from_user(&wol, useraddr, sizeof(wol)))
1410 ret = dev->ethtool_ops->set_wol(dev, &wol);
1414 dev->wol_enabled = !!wol.wolopts;
1419 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
1421 struct ethtool_eee edata;
1424 if (!dev->ethtool_ops->get_eee)
1427 memset(&edata, 0, sizeof(struct ethtool_eee));
1428 edata.cmd = ETHTOOL_GEEE;
1429 rc = dev->ethtool_ops->get_eee(dev, &edata);
1434 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1440 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
1442 struct ethtool_eee edata;
1444 if (!dev->ethtool_ops->set_eee)
1447 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1450 return dev->ethtool_ops->set_eee(dev, &edata);
1453 static int ethtool_nway_reset(struct net_device *dev)
1455 if (!dev->ethtool_ops->nway_reset)
1458 return dev->ethtool_ops->nway_reset(dev);
1461 static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
1463 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
1465 if (!dev->ethtool_ops->get_link)
1468 edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
1470 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1475 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
1476 int (*getter)(struct net_device *,
1477 struct ethtool_eeprom *, u8 *),
1480 struct ethtool_eeprom eeprom;
1481 void __user *userbuf = useraddr + sizeof(eeprom);
1482 u32 bytes_remaining;
1486 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1489 /* Check for wrap and zero */
1490 if (eeprom.offset + eeprom.len <= eeprom.offset)
1493 /* Check for exceeding total eeprom len */
1494 if (eeprom.offset + eeprom.len > total_len)
1497 data = kmalloc(PAGE_SIZE, GFP_USER);
1501 bytes_remaining = eeprom.len;
1502 while (bytes_remaining > 0) {
1503 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1505 ret = getter(dev, &eeprom, data);
1508 if (copy_to_user(userbuf, data, eeprom.len)) {
1512 userbuf += eeprom.len;
1513 eeprom.offset += eeprom.len;
1514 bytes_remaining -= eeprom.len;
1517 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
1518 eeprom.offset -= eeprom.len;
1519 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
1526 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
1528 const struct ethtool_ops *ops = dev->ethtool_ops;
1530 if (!ops->get_eeprom || !ops->get_eeprom_len ||
1531 !ops->get_eeprom_len(dev))
1534 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
1535 ops->get_eeprom_len(dev));
1538 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
1540 struct ethtool_eeprom eeprom;
1541 const struct ethtool_ops *ops = dev->ethtool_ops;
1542 void __user *userbuf = useraddr + sizeof(eeprom);
1543 u32 bytes_remaining;
1547 if (!ops->set_eeprom || !ops->get_eeprom_len ||
1548 !ops->get_eeprom_len(dev))
1551 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1554 /* Check for wrap and zero */
1555 if (eeprom.offset + eeprom.len <= eeprom.offset)
1558 /* Check for exceeding total eeprom len */
1559 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1562 data = kmalloc(PAGE_SIZE, GFP_USER);
1566 bytes_remaining = eeprom.len;
1567 while (bytes_remaining > 0) {
1568 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1570 if (copy_from_user(data, userbuf, eeprom.len)) {
1574 ret = ops->set_eeprom(dev, &eeprom, data);
1577 userbuf += eeprom.len;
1578 eeprom.offset += eeprom.len;
1579 bytes_remaining -= eeprom.len;
1586 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1587 void __user *useraddr)
1589 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1591 if (!dev->ethtool_ops->get_coalesce)
1594 dev->ethtool_ops->get_coalesce(dev, &coalesce);
1596 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1601 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1602 void __user *useraddr)
1604 struct ethtool_coalesce coalesce;
1606 if (!dev->ethtool_ops->set_coalesce)
1609 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1612 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
1615 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1617 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1619 if (!dev->ethtool_ops->get_ringparam)
1622 dev->ethtool_ops->get_ringparam(dev, &ringparam);
1624 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1629 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1631 struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM };
1633 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam)
1636 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1639 dev->ethtool_ops->get_ringparam(dev, &max);
1641 /* ensure new ring parameters are within the maximums */
1642 if (ringparam.rx_pending > max.rx_max_pending ||
1643 ringparam.rx_mini_pending > max.rx_mini_max_pending ||
1644 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending ||
1645 ringparam.tx_pending > max.tx_max_pending)
1648 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
1651 static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
1652 void __user *useraddr)
1654 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
1656 if (!dev->ethtool_ops->get_channels)
1659 dev->ethtool_ops->get_channels(dev, &channels);
1661 if (copy_to_user(useraddr, &channels, sizeof(channels)))
1666 static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
1667 void __user *useraddr)
1669 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS };
1670 u16 from_channel, to_channel;
1671 u32 max_rx_in_use = 0;
1674 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels)
1677 if (copy_from_user(&channels, useraddr, sizeof(channels)))
1680 dev->ethtool_ops->get_channels(dev, &curr);
1682 /* ensure new counts are within the maximums */
1683 if (channels.rx_count > curr.max_rx ||
1684 channels.tx_count > curr.max_tx ||
1685 channels.combined_count > curr.max_combined ||
1686 channels.other_count > curr.max_other)
1689 /* ensure the new Rx count fits within the configured Rx flow
1690 * indirection table settings */
1691 if (netif_is_rxfh_configured(dev) &&
1692 !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) &&
1693 (channels.combined_count + channels.rx_count) <= max_rx_in_use)
1696 /* Disabling channels, query zero-copy AF_XDP sockets */
1697 from_channel = channels.combined_count +
1698 min(channels.rx_count, channels.tx_count);
1699 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count);
1700 for (i = from_channel; i < to_channel; i++)
1701 if (xdp_get_umem_from_qid(dev, i))
1704 return dev->ethtool_ops->set_channels(dev, &channels);
1707 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1709 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
1711 if (!dev->ethtool_ops->get_pauseparam)
1714 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1716 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1721 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1723 struct ethtool_pauseparam pauseparam;
1725 if (!dev->ethtool_ops->set_pauseparam)
1728 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1731 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1734 static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1736 struct ethtool_test test;
1737 const struct ethtool_ops *ops = dev->ethtool_ops;
1741 if (!ops->self_test || !ops->get_sset_count)
1744 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
1747 WARN_ON(test_len == 0);
1749 if (copy_from_user(&test, useraddr, sizeof(test)))
1752 test.len = test_len;
1753 data = kmalloc_array(test_len, sizeof(u64), GFP_USER);
1757 ops->self_test(dev, &test, data);
1760 if (copy_to_user(useraddr, &test, sizeof(test)))
1762 useraddr += sizeof(test);
1763 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1772 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1774 struct ethtool_gstrings gstrings;
1778 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1781 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
1784 if (ret > S32_MAX / ETH_GSTRING_LEN)
1789 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN));
1790 if (gstrings.len && !data)
1793 __ethtool_get_strings(dev, gstrings.string_set, data);
1796 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1798 useraddr += sizeof(gstrings);
1800 copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1809 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1811 struct ethtool_value id;
1813 const struct ethtool_ops *ops = dev->ethtool_ops;
1816 if (!ops->set_phys_id)
1822 if (copy_from_user(&id, useraddr, sizeof(id)))
1825 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
1829 /* Drop the RTNL lock while waiting, but prevent reentry or
1830 * removal of the device.
1837 /* Driver will handle this itself */
1838 schedule_timeout_interruptible(
1839 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
1841 /* Driver expects to be called at twice the frequency in rc */
1842 int n = rc * 2, i, interval = HZ / n;
1844 /* Count down seconds */
1846 /* Count down iterations per second */
1850 rc = ops->set_phys_id(dev,
1851 (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
1855 schedule_timeout_interruptible(interval);
1856 } while (!signal_pending(current) && --i != 0);
1857 } while (!signal_pending(current) &&
1858 (id.data == 0 || --id.data != 0));
1865 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
1869 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1871 struct ethtool_stats stats;
1872 const struct ethtool_ops *ops = dev->ethtool_ops;
1876 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1879 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
1882 if (n_stats > S32_MAX / sizeof(u64))
1884 WARN_ON_ONCE(!n_stats);
1885 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1888 stats.n_stats = n_stats;
1889 data = vzalloc(array_size(n_stats, sizeof(u64)));
1890 if (n_stats && !data)
1893 ops->get_ethtool_stats(dev, &stats, data);
1896 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1898 useraddr += sizeof(stats);
1899 if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
1908 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
1910 const struct ethtool_ops *ops = dev->ethtool_ops;
1911 struct phy_device *phydev = dev->phydev;
1912 struct ethtool_stats stats;
1916 if (!phydev && (!ops->get_ethtool_phy_stats || !ops->get_sset_count))
1919 if (dev->phydev && !ops->get_ethtool_phy_stats)
1920 n_stats = phy_ethtool_get_sset_count(dev->phydev);
1922 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS);
1925 if (n_stats > S32_MAX / sizeof(u64))
1927 WARN_ON_ONCE(!n_stats);
1929 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1932 stats.n_stats = n_stats;
1933 data = vzalloc(array_size(n_stats, sizeof(u64)));
1934 if (n_stats && !data)
1937 if (dev->phydev && !ops->get_ethtool_phy_stats) {
1938 ret = phy_ethtool_get_stats(dev->phydev, &stats, data);
1942 ops->get_ethtool_phy_stats(dev, &stats, data);
1946 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1948 useraddr += sizeof(stats);
1949 if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
1958 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
1960 struct ethtool_perm_addr epaddr;
1962 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
1965 if (epaddr.size < dev->addr_len)
1967 epaddr.size = dev->addr_len;
1969 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
1971 useraddr += sizeof(epaddr);
1972 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
1977 static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
1978 u32 cmd, u32 (*actor)(struct net_device *))
1980 struct ethtool_value edata = { .cmd = cmd };
1985 edata.data = actor(dev);
1987 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1992 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
1993 void (*actor)(struct net_device *, u32))
1995 struct ethtool_value edata;
2000 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2003 actor(dev, edata.data);
2007 static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
2008 int (*actor)(struct net_device *, u32))
2010 struct ethtool_value edata;
2015 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2018 return actor(dev, edata.data);
2021 static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
2022 char __user *useraddr)
2024 struct ethtool_flash efl;
2026 if (copy_from_user(&efl, useraddr, sizeof(efl)))
2029 if (!dev->ethtool_ops->flash_device)
2032 efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
2034 return dev->ethtool_ops->flash_device(dev, &efl);
2037 static int ethtool_set_dump(struct net_device *dev,
2038 void __user *useraddr)
2040 struct ethtool_dump dump;
2042 if (!dev->ethtool_ops->set_dump)
2045 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2048 return dev->ethtool_ops->set_dump(dev, &dump);
2051 static int ethtool_get_dump_flag(struct net_device *dev,
2052 void __user *useraddr)
2055 struct ethtool_dump dump;
2056 const struct ethtool_ops *ops = dev->ethtool_ops;
2058 if (!ops->get_dump_flag)
2061 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2064 ret = ops->get_dump_flag(dev, &dump);
2068 if (copy_to_user(useraddr, &dump, sizeof(dump)))
2073 static int ethtool_get_dump_data(struct net_device *dev,
2074 void __user *useraddr)
2078 struct ethtool_dump dump, tmp;
2079 const struct ethtool_ops *ops = dev->ethtool_ops;
2082 if (!ops->get_dump_data || !ops->get_dump_flag)
2085 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2088 memset(&tmp, 0, sizeof(tmp));
2089 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
2090 ret = ops->get_dump_flag(dev, &tmp);
2094 len = min(tmp.len, dump.len);
2098 /* Don't ever let the driver think there's more space available
2099 * than it requested with .get_dump_flag().
2103 /* Always allocate enough space to hold the whole thing so that the
2104 * driver does not need to check the length and bother with partial
2107 data = vzalloc(tmp.len);
2110 ret = ops->get_dump_data(dev, &dump, data);
2114 /* There are two sane possibilities:
2115 * 1. The driver's .get_dump_data() does not touch dump.len.
2116 * 2. Or it may set dump.len to how much it really writes, which
2117 * should be tmp.len (or len if it can do a partial dump).
2118 * In any case respond to userspace with the actual length of data
2121 WARN_ON(dump.len != len && dump.len != tmp.len);
2124 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
2128 useraddr += offsetof(struct ethtool_dump, data);
2129 if (copy_to_user(useraddr, data, len))
2136 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
2139 struct ethtool_ts_info info;
2140 const struct ethtool_ops *ops = dev->ethtool_ops;
2141 struct phy_device *phydev = dev->phydev;
2143 memset(&info, 0, sizeof(info));
2144 info.cmd = ETHTOOL_GET_TS_INFO;
2146 if (phydev && phydev->drv && phydev->drv->ts_info) {
2147 err = phydev->drv->ts_info(phydev, &info);
2148 } else if (ops->get_ts_info) {
2149 err = ops->get_ts_info(dev, &info);
2151 info.so_timestamping =
2152 SOF_TIMESTAMPING_RX_SOFTWARE |
2153 SOF_TIMESTAMPING_SOFTWARE;
2154 info.phc_index = -1;
2160 if (copy_to_user(useraddr, &info, sizeof(info)))
2166 static int __ethtool_get_module_info(struct net_device *dev,
2167 struct ethtool_modinfo *modinfo)
2169 const struct ethtool_ops *ops = dev->ethtool_ops;
2170 struct phy_device *phydev = dev->phydev;
2173 return sfp_get_module_info(dev->sfp_bus, modinfo);
2175 if (phydev && phydev->drv && phydev->drv->module_info)
2176 return phydev->drv->module_info(phydev, modinfo);
2178 if (ops->get_module_info)
2179 return ops->get_module_info(dev, modinfo);
2184 static int ethtool_get_module_info(struct net_device *dev,
2185 void __user *useraddr)
2188 struct ethtool_modinfo modinfo;
2190 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
2193 ret = __ethtool_get_module_info(dev, &modinfo);
2197 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
2203 static int __ethtool_get_module_eeprom(struct net_device *dev,
2204 struct ethtool_eeprom *ee, u8 *data)
2206 const struct ethtool_ops *ops = dev->ethtool_ops;
2207 struct phy_device *phydev = dev->phydev;
2210 return sfp_get_module_eeprom(dev->sfp_bus, ee, data);
2212 if (phydev && phydev->drv && phydev->drv->module_eeprom)
2213 return phydev->drv->module_eeprom(phydev, ee, data);
2215 if (ops->get_module_eeprom)
2216 return ops->get_module_eeprom(dev, ee, data);
2221 static int ethtool_get_module_eeprom(struct net_device *dev,
2222 void __user *useraddr)
2225 struct ethtool_modinfo modinfo;
2227 ret = __ethtool_get_module_info(dev, &modinfo);
2231 return ethtool_get_any_eeprom(dev, useraddr,
2232 __ethtool_get_module_eeprom,
2233 modinfo.eeprom_len);
2236 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna)
2239 case ETHTOOL_RX_COPYBREAK:
2240 case ETHTOOL_TX_COPYBREAK:
2241 if (tuna->len != sizeof(u32) ||
2242 tuna->type_id != ETHTOOL_TUNABLE_U32)
2245 case ETHTOOL_PFC_PREVENTION_TOUT:
2246 if (tuna->len != sizeof(u16) ||
2247 tuna->type_id != ETHTOOL_TUNABLE_U16)
2257 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr)
2260 struct ethtool_tunable tuna;
2261 const struct ethtool_ops *ops = dev->ethtool_ops;
2264 if (!ops->get_tunable)
2266 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2268 ret = ethtool_tunable_valid(&tuna);
2271 data = kmalloc(tuna.len, GFP_USER);
2274 ret = ops->get_tunable(dev, &tuna, data);
2277 useraddr += sizeof(tuna);
2279 if (copy_to_user(useraddr, data, tuna.len))
2288 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr)
2291 struct ethtool_tunable tuna;
2292 const struct ethtool_ops *ops = dev->ethtool_ops;
2295 if (!ops->set_tunable)
2297 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2299 ret = ethtool_tunable_valid(&tuna);
2302 useraddr += sizeof(tuna);
2303 data = memdup_user(useraddr, tuna.len);
2305 return PTR_ERR(data);
2306 ret = ops->set_tunable(dev, &tuna, data);
2312 static int ethtool_get_per_queue_coalesce(struct net_device *dev,
2313 void __user *useraddr,
2314 struct ethtool_per_queue_op *per_queue_opt)
2318 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2320 if (!dev->ethtool_ops->get_per_queue_coalesce)
2323 useraddr += sizeof(*per_queue_opt);
2325 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask,
2328 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2329 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
2331 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce);
2334 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
2336 useraddr += sizeof(coalesce);
2342 static int ethtool_set_per_queue_coalesce(struct net_device *dev,
2343 void __user *useraddr,
2344 struct ethtool_per_queue_op *per_queue_opt)
2349 struct ethtool_coalesce *backup = NULL, *tmp = NULL;
2350 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2352 if ((!dev->ethtool_ops->set_per_queue_coalesce) ||
2353 (!dev->ethtool_ops->get_per_queue_coalesce))
2356 useraddr += sizeof(*per_queue_opt);
2358 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE);
2359 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE);
2360 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL);
2364 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2365 struct ethtool_coalesce coalesce;
2367 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp);
2373 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) {
2378 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce);
2382 useraddr += sizeof(coalesce);
2388 for_each_set_bit(i, queue_mask, bit) {
2389 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp);
2398 static int ethtool_set_per_queue(struct net_device *dev,
2399 void __user *useraddr, u32 sub_cmd)
2401 struct ethtool_per_queue_op per_queue_opt;
2403 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt)))
2406 if (per_queue_opt.sub_command != sub_cmd)
2409 switch (per_queue_opt.sub_command) {
2410 case ETHTOOL_GCOALESCE:
2411 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt);
2412 case ETHTOOL_SCOALESCE:
2413 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt);
2419 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna)
2422 case ETHTOOL_PHY_DOWNSHIFT:
2423 if (tuna->len != sizeof(u8) ||
2424 tuna->type_id != ETHTOOL_TUNABLE_U8)
2434 static int get_phy_tunable(struct net_device *dev, void __user *useraddr)
2437 struct ethtool_tunable tuna;
2438 struct phy_device *phydev = dev->phydev;
2441 if (!(phydev && phydev->drv && phydev->drv->get_tunable))
2444 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2446 ret = ethtool_phy_tunable_valid(&tuna);
2449 data = kmalloc(tuna.len, GFP_USER);
2452 mutex_lock(&phydev->lock);
2453 ret = phydev->drv->get_tunable(phydev, &tuna, data);
2454 mutex_unlock(&phydev->lock);
2457 useraddr += sizeof(tuna);
2459 if (copy_to_user(useraddr, data, tuna.len))
2468 static int set_phy_tunable(struct net_device *dev, void __user *useraddr)
2471 struct ethtool_tunable tuna;
2472 struct phy_device *phydev = dev->phydev;
2475 if (!(phydev && phydev->drv && phydev->drv->set_tunable))
2477 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2479 ret = ethtool_phy_tunable_valid(&tuna);
2482 useraddr += sizeof(tuna);
2483 data = memdup_user(useraddr, tuna.len);
2485 return PTR_ERR(data);
2486 mutex_lock(&phydev->lock);
2487 ret = phydev->drv->set_tunable(phydev, &tuna, data);
2488 mutex_unlock(&phydev->lock);
2494 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr)
2496 struct ethtool_fecparam fecparam = { ETHTOOL_GFECPARAM };
2499 if (!dev->ethtool_ops->get_fecparam)
2502 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam);
2506 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam)))
2511 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr)
2513 struct ethtool_fecparam fecparam;
2515 if (!dev->ethtool_ops->set_fecparam)
2518 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam)))
2521 return dev->ethtool_ops->set_fecparam(dev, &fecparam);
2524 /* The main entry point in this file. Called from net/core/dev_ioctl.c */
2526 int dev_ethtool(struct net *net, struct ifreq *ifr)
2528 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
2529 void __user *useraddr = ifr->ifr_data;
2530 u32 ethcmd, sub_cmd;
2532 netdev_features_t old_features;
2534 if (!dev || !netif_device_present(dev))
2537 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd)))
2540 if (ethcmd == ETHTOOL_PERQUEUE) {
2541 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd)))
2546 /* Allow some commands to be done by anyone */
2549 case ETHTOOL_GDRVINFO:
2550 case ETHTOOL_GMSGLVL:
2552 case ETHTOOL_GCOALESCE:
2553 case ETHTOOL_GRINGPARAM:
2554 case ETHTOOL_GPAUSEPARAM:
2555 case ETHTOOL_GRXCSUM:
2556 case ETHTOOL_GTXCSUM:
2558 case ETHTOOL_GSSET_INFO:
2559 case ETHTOOL_GSTRINGS:
2560 case ETHTOOL_GSTATS:
2561 case ETHTOOL_GPHYSTATS:
2563 case ETHTOOL_GPERMADDR:
2567 case ETHTOOL_GFLAGS:
2568 case ETHTOOL_GPFLAGS:
2570 case ETHTOOL_GRXRINGS:
2571 case ETHTOOL_GRXCLSRLCNT:
2572 case ETHTOOL_GRXCLSRULE:
2573 case ETHTOOL_GRXCLSRLALL:
2574 case ETHTOOL_GRXFHINDIR:
2576 case ETHTOOL_GFEATURES:
2577 case ETHTOOL_GCHANNELS:
2578 case ETHTOOL_GET_TS_INFO:
2580 case ETHTOOL_GTUNABLE:
2581 case ETHTOOL_PHY_GTUNABLE:
2582 case ETHTOOL_GLINKSETTINGS:
2583 case ETHTOOL_GFECPARAM:
2586 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
2590 if (dev->ethtool_ops->begin) {
2591 rc = dev->ethtool_ops->begin(dev);
2595 old_features = dev->features;
2599 rc = ethtool_get_settings(dev, useraddr);
2602 rc = ethtool_set_settings(dev, useraddr);
2604 case ETHTOOL_GDRVINFO:
2605 rc = ethtool_get_drvinfo(dev, useraddr);
2608 rc = ethtool_get_regs(dev, useraddr);
2611 rc = ethtool_get_wol(dev, useraddr);
2614 rc = ethtool_set_wol(dev, useraddr);
2616 case ETHTOOL_GMSGLVL:
2617 rc = ethtool_get_value(dev, useraddr, ethcmd,
2618 dev->ethtool_ops->get_msglevel);
2620 case ETHTOOL_SMSGLVL:
2621 rc = ethtool_set_value_void(dev, useraddr,
2622 dev->ethtool_ops->set_msglevel);
2625 rc = ethtool_get_eee(dev, useraddr);
2628 rc = ethtool_set_eee(dev, useraddr);
2630 case ETHTOOL_NWAY_RST:
2631 rc = ethtool_nway_reset(dev);
2634 rc = ethtool_get_link(dev, useraddr);
2636 case ETHTOOL_GEEPROM:
2637 rc = ethtool_get_eeprom(dev, useraddr);
2639 case ETHTOOL_SEEPROM:
2640 rc = ethtool_set_eeprom(dev, useraddr);
2642 case ETHTOOL_GCOALESCE:
2643 rc = ethtool_get_coalesce(dev, useraddr);
2645 case ETHTOOL_SCOALESCE:
2646 rc = ethtool_set_coalesce(dev, useraddr);
2648 case ETHTOOL_GRINGPARAM:
2649 rc = ethtool_get_ringparam(dev, useraddr);
2651 case ETHTOOL_SRINGPARAM:
2652 rc = ethtool_set_ringparam(dev, useraddr);
2654 case ETHTOOL_GPAUSEPARAM:
2655 rc = ethtool_get_pauseparam(dev, useraddr);
2657 case ETHTOOL_SPAUSEPARAM:
2658 rc = ethtool_set_pauseparam(dev, useraddr);
2661 rc = ethtool_self_test(dev, useraddr);
2663 case ETHTOOL_GSTRINGS:
2664 rc = ethtool_get_strings(dev, useraddr);
2666 case ETHTOOL_PHYS_ID:
2667 rc = ethtool_phys_id(dev, useraddr);
2669 case ETHTOOL_GSTATS:
2670 rc = ethtool_get_stats(dev, useraddr);
2672 case ETHTOOL_GPERMADDR:
2673 rc = ethtool_get_perm_addr(dev, useraddr);
2675 case ETHTOOL_GFLAGS:
2676 rc = ethtool_get_value(dev, useraddr, ethcmd,
2677 __ethtool_get_flags);
2679 case ETHTOOL_SFLAGS:
2680 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
2682 case ETHTOOL_GPFLAGS:
2683 rc = ethtool_get_value(dev, useraddr, ethcmd,
2684 dev->ethtool_ops->get_priv_flags);
2686 case ETHTOOL_SPFLAGS:
2687 rc = ethtool_set_value(dev, useraddr,
2688 dev->ethtool_ops->set_priv_flags);
2691 case ETHTOOL_GRXRINGS:
2692 case ETHTOOL_GRXCLSRLCNT:
2693 case ETHTOOL_GRXCLSRULE:
2694 case ETHTOOL_GRXCLSRLALL:
2695 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
2698 case ETHTOOL_SRXCLSRLDEL:
2699 case ETHTOOL_SRXCLSRLINS:
2700 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
2702 case ETHTOOL_FLASHDEV:
2703 rc = ethtool_flash_device(dev, useraddr);
2706 rc = ethtool_reset(dev, useraddr);
2708 case ETHTOOL_GSSET_INFO:
2709 rc = ethtool_get_sset_info(dev, useraddr);
2711 case ETHTOOL_GRXFHINDIR:
2712 rc = ethtool_get_rxfh_indir(dev, useraddr);
2714 case ETHTOOL_SRXFHINDIR:
2715 rc = ethtool_set_rxfh_indir(dev, useraddr);
2718 rc = ethtool_get_rxfh(dev, useraddr);
2721 rc = ethtool_set_rxfh(dev, useraddr);
2723 case ETHTOOL_GFEATURES:
2724 rc = ethtool_get_features(dev, useraddr);
2726 case ETHTOOL_SFEATURES:
2727 rc = ethtool_set_features(dev, useraddr);
2729 case ETHTOOL_GTXCSUM:
2730 case ETHTOOL_GRXCSUM:
2735 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
2737 case ETHTOOL_STXCSUM:
2738 case ETHTOOL_SRXCSUM:
2743 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
2745 case ETHTOOL_GCHANNELS:
2746 rc = ethtool_get_channels(dev, useraddr);
2748 case ETHTOOL_SCHANNELS:
2749 rc = ethtool_set_channels(dev, useraddr);
2751 case ETHTOOL_SET_DUMP:
2752 rc = ethtool_set_dump(dev, useraddr);
2754 case ETHTOOL_GET_DUMP_FLAG:
2755 rc = ethtool_get_dump_flag(dev, useraddr);
2757 case ETHTOOL_GET_DUMP_DATA:
2758 rc = ethtool_get_dump_data(dev, useraddr);
2760 case ETHTOOL_GET_TS_INFO:
2761 rc = ethtool_get_ts_info(dev, useraddr);
2763 case ETHTOOL_GMODULEINFO:
2764 rc = ethtool_get_module_info(dev, useraddr);
2766 case ETHTOOL_GMODULEEEPROM:
2767 rc = ethtool_get_module_eeprom(dev, useraddr);
2769 case ETHTOOL_GTUNABLE:
2770 rc = ethtool_get_tunable(dev, useraddr);
2772 case ETHTOOL_STUNABLE:
2773 rc = ethtool_set_tunable(dev, useraddr);
2775 case ETHTOOL_GPHYSTATS:
2776 rc = ethtool_get_phy_stats(dev, useraddr);
2778 case ETHTOOL_PERQUEUE:
2779 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd);
2781 case ETHTOOL_GLINKSETTINGS:
2782 rc = ethtool_get_link_ksettings(dev, useraddr);
2784 case ETHTOOL_SLINKSETTINGS:
2785 rc = ethtool_set_link_ksettings(dev, useraddr);
2787 case ETHTOOL_PHY_GTUNABLE:
2788 rc = get_phy_tunable(dev, useraddr);
2790 case ETHTOOL_PHY_STUNABLE:
2791 rc = set_phy_tunable(dev, useraddr);
2793 case ETHTOOL_GFECPARAM:
2794 rc = ethtool_get_fecparam(dev, useraddr);
2796 case ETHTOOL_SFECPARAM:
2797 rc = ethtool_set_fecparam(dev, useraddr);
2803 if (dev->ethtool_ops->complete)
2804 dev->ethtool_ops->complete(dev);
2806 if (old_features != dev->features)
2807 netdev_features_change(dev);