1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * net/core/ethtool.c - Ethtool ioctl handler
4 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx>
6 * This file is where we call all the ethtool_ops commands to get
7 * the information ethtool needs.
10 #include <linux/module.h>
11 #include <linux/types.h>
12 #include <linux/capability.h>
13 #include <linux/errno.h>
14 #include <linux/ethtool.h>
15 #include <linux/netdevice.h>
16 #include <linux/net_tstamp.h>
17 #include <linux/phy.h>
18 #include <linux/bitops.h>
19 #include <linux/uaccess.h>
20 #include <linux/vmalloc.h>
21 #include <linux/sfp.h>
22 #include <linux/slab.h>
23 #include <linux/rtnetlink.h>
24 #include <linux/sched/signal.h>
25 #include <linux/net.h>
26 #include <net/devlink.h>
27 #include <net/xdp_sock.h>
28 #include <net/flow_offload.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_GRO_HW_BIT] = "rx-gro-hw",
77 [NETIF_F_LRO_BIT] = "rx-lro",
79 [NETIF_F_TSO_BIT] = "tx-tcp-segmentation",
80 [NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust",
81 [NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation",
82 [NETIF_F_TSO_MANGLEID_BIT] = "tx-tcp-mangleid-segmentation",
83 [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation",
84 [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation",
85 [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation",
86 [NETIF_F_GSO_GRE_CSUM_BIT] = "tx-gre-csum-segmentation",
87 [NETIF_F_GSO_IPXIP4_BIT] = "tx-ipxip4-segmentation",
88 [NETIF_F_GSO_IPXIP6_BIT] = "tx-ipxip6-segmentation",
89 [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation",
90 [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation",
91 [NETIF_F_GSO_PARTIAL_BIT] = "tx-gso-partial",
92 [NETIF_F_GSO_SCTP_BIT] = "tx-sctp-segmentation",
93 [NETIF_F_GSO_ESP_BIT] = "tx-esp-segmentation",
94 [NETIF_F_GSO_UDP_L4_BIT] = "tx-udp-segmentation",
96 [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc",
97 [NETIF_F_SCTP_CRC_BIT] = "tx-checksum-sctp",
98 [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu",
99 [NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter",
100 [NETIF_F_RXHASH_BIT] = "rx-hashing",
101 [NETIF_F_RXCSUM_BIT] = "rx-checksum",
102 [NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy",
103 [NETIF_F_LOOPBACK_BIT] = "loopback",
104 [NETIF_F_RXFCS_BIT] = "rx-fcs",
105 [NETIF_F_RXALL_BIT] = "rx-all",
106 [NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload",
107 [NETIF_F_HW_TC_BIT] = "hw-tc-offload",
108 [NETIF_F_HW_ESP_BIT] = "esp-hw-offload",
109 [NETIF_F_HW_ESP_TX_CSUM_BIT] = "esp-tx-csum-hw-offload",
110 [NETIF_F_RX_UDP_TUNNEL_PORT_BIT] = "rx-udp_tunnel-port-offload",
111 [NETIF_F_HW_TLS_RECORD_BIT] = "tls-hw-record",
112 [NETIF_F_HW_TLS_TX_BIT] = "tls-hw-tx-offload",
113 [NETIF_F_HW_TLS_RX_BIT] = "tls-hw-rx-offload",
117 rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = {
118 [ETH_RSS_HASH_TOP_BIT] = "toeplitz",
119 [ETH_RSS_HASH_XOR_BIT] = "xor",
120 [ETH_RSS_HASH_CRC32_BIT] = "crc32",
124 tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
125 [ETHTOOL_ID_UNSPEC] = "Unspec",
126 [ETHTOOL_RX_COPYBREAK] = "rx-copybreak",
127 [ETHTOOL_TX_COPYBREAK] = "tx-copybreak",
128 [ETHTOOL_PFC_PREVENTION_TOUT] = "pfc-prevention-tout",
132 phy_tunable_strings[__ETHTOOL_PHY_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
133 [ETHTOOL_ID_UNSPEC] = "Unspec",
134 [ETHTOOL_PHY_DOWNSHIFT] = "phy-downshift",
135 [ETHTOOL_PHY_FAST_LINK_DOWN] = "phy-fast-link-down",
136 [ETHTOOL_PHY_EDPD] = "phy-energy-detect-power-down",
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 int ret = ops->get_regs_len(dev);
800 info.regdump_len = ret;
803 if (ops->get_eeprom_len)
804 info.eedump_len = ops->get_eeprom_len(dev);
806 if (!info.fw_version[0])
807 devlink_compat_running_version(dev, info.fw_version,
808 sizeof(info.fw_version));
810 if (copy_to_user(useraddr, &info, sizeof(info)))
815 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
816 void __user *useraddr)
818 struct ethtool_sset_info info;
820 int i, idx = 0, n_bits = 0, ret, rc;
821 u32 *info_buf = NULL;
823 if (copy_from_user(&info, useraddr, sizeof(info)))
826 /* store copy of mask, because we zero struct later on */
827 sset_mask = info.sset_mask;
831 /* calculate size of return buffer */
832 n_bits = hweight64(sset_mask);
834 memset(&info, 0, sizeof(info));
835 info.cmd = ETHTOOL_GSSET_INFO;
837 info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER);
842 * fill return buffer based on input bitmask and successful
843 * get_sset_count return
845 for (i = 0; i < 64; i++) {
846 if (!(sset_mask & (1ULL << i)))
849 rc = __ethtool_get_sset_count(dev, i);
851 info.sset_mask |= (1ULL << i);
852 info_buf[idx++] = rc;
857 if (copy_to_user(useraddr, &info, sizeof(info)))
860 useraddr += offsetof(struct ethtool_sset_info, data);
861 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
871 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
872 u32 cmd, void __user *useraddr)
874 struct ethtool_rxnfc info;
875 size_t info_size = sizeof(info);
878 if (!dev->ethtool_ops->set_rxnfc)
881 /* struct ethtool_rxnfc was originally defined for
882 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
883 * members. User-space might still be using that
885 if (cmd == ETHTOOL_SRXFH)
886 info_size = (offsetof(struct ethtool_rxnfc, data) +
889 if (copy_from_user(&info, useraddr, info_size))
892 rc = dev->ethtool_ops->set_rxnfc(dev, &info);
896 if (cmd == ETHTOOL_SRXCLSRLINS &&
897 copy_to_user(useraddr, &info, info_size))
903 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
904 u32 cmd, void __user *useraddr)
906 struct ethtool_rxnfc info;
907 size_t info_size = sizeof(info);
908 const struct ethtool_ops *ops = dev->ethtool_ops;
910 void *rule_buf = NULL;
915 /* struct ethtool_rxnfc was originally defined for
916 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
917 * members. User-space might still be using that
919 if (cmd == ETHTOOL_GRXFH)
920 info_size = (offsetof(struct ethtool_rxnfc, data) +
923 if (copy_from_user(&info, useraddr, info_size))
926 /* If FLOW_RSS was requested then user-space must be using the
927 * new definition, as FLOW_RSS is newer.
929 if (cmd == ETHTOOL_GRXFH && info.flow_type & FLOW_RSS) {
930 info_size = sizeof(info);
931 if (copy_from_user(&info, useraddr, info_size))
933 /* Since malicious users may modify the original data,
934 * we need to check whether FLOW_RSS is still requested.
936 if (!(info.flow_type & FLOW_RSS))
943 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
944 if (info.rule_cnt > 0) {
945 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
946 rule_buf = kcalloc(info.rule_cnt, sizeof(u32),
953 ret = ops->get_rxnfc(dev, &info, rule_buf);
958 if (copy_to_user(useraddr, &info, info_size))
962 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
963 if (copy_to_user(useraddr, rule_buf,
964 info.rule_cnt * sizeof(u32)))
975 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr,
976 struct ethtool_rxnfc *rx_rings,
981 if (copy_from_user(indir, useraddr, size * sizeof(indir[0])))
984 /* Validate ring indices */
985 for (i = 0; i < size; i++)
986 if (indir[i] >= rx_rings->data)
992 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly;
994 void netdev_rss_key_fill(void *buffer, size_t len)
996 BUG_ON(len > sizeof(netdev_rss_key));
997 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key));
998 memcpy(buffer, netdev_rss_key, len);
1000 EXPORT_SYMBOL(netdev_rss_key_fill);
1002 static int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max)
1004 u32 dev_size, current_max = 0;
1008 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1009 !dev->ethtool_ops->get_rxfh)
1011 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1015 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1019 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1024 current_max = max(current_max, indir[dev_size]);
1033 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
1034 void __user *useraddr)
1036 u32 user_size, dev_size;
1040 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1041 !dev->ethtool_ops->get_rxfh)
1043 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1047 if (copy_from_user(&user_size,
1048 useraddr + offsetof(struct ethtool_rxfh_indir, size),
1052 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
1053 &dev_size, sizeof(dev_size)))
1056 /* If the user buffer size is 0, this is just a query for the
1057 * device table size. Otherwise, if it's smaller than the
1058 * device table size it's an error.
1060 if (user_size < dev_size)
1061 return user_size == 0 ? 0 : -EINVAL;
1063 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1067 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1071 if (copy_to_user(useraddr +
1072 offsetof(struct ethtool_rxfh_indir, ring_index[0]),
1073 indir, dev_size * sizeof(indir[0])))
1081 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
1082 void __user *useraddr)
1084 struct ethtool_rxnfc rx_rings;
1085 u32 user_size, dev_size, i;
1087 const struct ethtool_ops *ops = dev->ethtool_ops;
1089 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]);
1091 if (!ops->get_rxfh_indir_size || !ops->set_rxfh ||
1095 dev_size = ops->get_rxfh_indir_size(dev);
1099 if (copy_from_user(&user_size,
1100 useraddr + offsetof(struct ethtool_rxfh_indir, size),
1104 if (user_size != 0 && user_size != dev_size)
1107 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1111 rx_rings.cmd = ETHTOOL_GRXRINGS;
1112 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1116 if (user_size == 0) {
1117 for (i = 0; i < dev_size; i++)
1118 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1120 ret = ethtool_copy_validate_indir(indir,
1121 useraddr + ringidx_offset,
1128 ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE);
1132 /* indicate whether rxfh was set to default */
1134 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1136 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1143 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
1144 void __user *useraddr)
1147 const struct ethtool_ops *ops = dev->ethtool_ops;
1148 u32 user_indir_size, user_key_size;
1149 u32 dev_indir_size = 0, dev_key_size = 0;
1150 struct ethtool_rxfh rxfh;
1161 if (ops->get_rxfh_indir_size)
1162 dev_indir_size = ops->get_rxfh_indir_size(dev);
1163 if (ops->get_rxfh_key_size)
1164 dev_key_size = ops->get_rxfh_key_size(dev);
1166 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
1168 user_indir_size = rxfh.indir_size;
1169 user_key_size = rxfh.key_size;
1171 /* Check that reserved fields are 0 for now */
1172 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32)
1174 /* Most drivers don't handle rss_context, check it's 0 as well */
1175 if (rxfh.rss_context && !ops->get_rxfh_context)
1178 rxfh.indir_size = dev_indir_size;
1179 rxfh.key_size = dev_key_size;
1180 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh)))
1183 if ((user_indir_size && (user_indir_size != dev_indir_size)) ||
1184 (user_key_size && (user_key_size != dev_key_size)))
1187 indir_bytes = user_indir_size * sizeof(indir[0]);
1188 total_size = indir_bytes + user_key_size;
1189 rss_config = kzalloc(total_size, GFP_USER);
1193 if (user_indir_size)
1194 indir = (u32 *)rss_config;
1197 hkey = rss_config + indir_bytes;
1199 if (rxfh.rss_context)
1200 ret = dev->ethtool_ops->get_rxfh_context(dev, indir, hkey,
1204 ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc);
1208 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc),
1209 &dev_hfunc, sizeof(rxfh.hfunc))) {
1211 } else if (copy_to_user(useraddr +
1212 offsetof(struct ethtool_rxfh, rss_config[0]),
1213 rss_config, total_size)) {
1222 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
1223 void __user *useraddr)
1226 const struct ethtool_ops *ops = dev->ethtool_ops;
1227 struct ethtool_rxnfc rx_rings;
1228 struct ethtool_rxfh rxfh;
1229 u32 dev_indir_size = 0, dev_key_size = 0, i;
1230 u32 *indir = NULL, indir_bytes = 0;
1233 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]);
1234 bool delete = false;
1236 if (!ops->get_rxnfc || !ops->set_rxfh)
1239 if (ops->get_rxfh_indir_size)
1240 dev_indir_size = ops->get_rxfh_indir_size(dev);
1241 if (ops->get_rxfh_key_size)
1242 dev_key_size = ops->get_rxfh_key_size(dev);
1244 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
1247 /* Check that reserved fields are 0 for now */
1248 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32)
1250 /* Most drivers don't handle rss_context, check it's 0 as well */
1251 if (rxfh.rss_context && !ops->set_rxfh_context)
1254 /* If either indir, hash key or function is valid, proceed further.
1255 * Must request at least one change: indir size, hash key or function.
1257 if ((rxfh.indir_size &&
1258 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE &&
1259 rxfh.indir_size != dev_indir_size) ||
1260 (rxfh.key_size && (rxfh.key_size != dev_key_size)) ||
1261 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE &&
1262 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE))
1265 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1266 indir_bytes = dev_indir_size * sizeof(indir[0]);
1268 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER);
1272 rx_rings.cmd = ETHTOOL_GRXRINGS;
1273 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1277 /* rxfh.indir_size == 0 means reset the indir table to default (master
1278 * context) or delete the context (other RSS contexts).
1279 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
1281 if (rxfh.indir_size &&
1282 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) {
1283 indir = (u32 *)rss_config;
1284 ret = ethtool_copy_validate_indir(indir,
1285 useraddr + rss_cfg_offset,
1290 } else if (rxfh.indir_size == 0) {
1291 if (rxfh.rss_context == 0) {
1292 indir = (u32 *)rss_config;
1293 for (i = 0; i < dev_indir_size; i++)
1294 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1300 if (rxfh.key_size) {
1301 hkey = rss_config + indir_bytes;
1302 if (copy_from_user(hkey,
1303 useraddr + rss_cfg_offset + indir_bytes,
1310 if (rxfh.rss_context)
1311 ret = ops->set_rxfh_context(dev, indir, hkey, rxfh.hfunc,
1312 &rxfh.rss_context, delete);
1314 ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc);
1318 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context),
1319 &rxfh.rss_context, sizeof(rxfh.rss_context)))
1322 if (!rxfh.rss_context) {
1323 /* indicate whether rxfh was set to default */
1324 if (rxfh.indir_size == 0)
1325 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1326 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1327 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1335 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
1337 struct ethtool_regs regs;
1338 const struct ethtool_ops *ops = dev->ethtool_ops;
1342 if (!ops->get_regs || !ops->get_regs_len)
1345 if (copy_from_user(®s, useraddr, sizeof(regs)))
1348 reglen = ops->get_regs_len(dev);
1352 if (regs.len > reglen)
1355 regbuf = vzalloc(reglen);
1359 if (regs.len < reglen)
1362 ops->get_regs(dev, ®s, regbuf);
1365 if (copy_to_user(useraddr, ®s, sizeof(regs)))
1367 useraddr += offsetof(struct ethtool_regs, data);
1368 if (copy_to_user(useraddr, regbuf, reglen))
1377 static int ethtool_reset(struct net_device *dev, char __user *useraddr)
1379 struct ethtool_value reset;
1382 if (!dev->ethtool_ops->reset)
1385 if (copy_from_user(&reset, useraddr, sizeof(reset)))
1388 ret = dev->ethtool_ops->reset(dev, &reset.data);
1392 if (copy_to_user(useraddr, &reset, sizeof(reset)))
1397 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
1399 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
1401 if (!dev->ethtool_ops->get_wol)
1404 dev->ethtool_ops->get_wol(dev, &wol);
1406 if (copy_to_user(useraddr, &wol, sizeof(wol)))
1411 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
1413 struct ethtool_wolinfo wol;
1416 if (!dev->ethtool_ops->set_wol)
1419 if (copy_from_user(&wol, useraddr, sizeof(wol)))
1422 ret = dev->ethtool_ops->set_wol(dev, &wol);
1426 dev->wol_enabled = !!wol.wolopts;
1431 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
1433 struct ethtool_eee edata;
1436 if (!dev->ethtool_ops->get_eee)
1439 memset(&edata, 0, sizeof(struct ethtool_eee));
1440 edata.cmd = ETHTOOL_GEEE;
1441 rc = dev->ethtool_ops->get_eee(dev, &edata);
1446 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1452 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
1454 struct ethtool_eee edata;
1456 if (!dev->ethtool_ops->set_eee)
1459 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1462 return dev->ethtool_ops->set_eee(dev, &edata);
1465 static int ethtool_nway_reset(struct net_device *dev)
1467 if (!dev->ethtool_ops->nway_reset)
1470 return dev->ethtool_ops->nway_reset(dev);
1473 static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
1475 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
1477 if (!dev->ethtool_ops->get_link)
1480 edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
1482 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1487 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
1488 int (*getter)(struct net_device *,
1489 struct ethtool_eeprom *, u8 *),
1492 struct ethtool_eeprom eeprom;
1493 void __user *userbuf = useraddr + sizeof(eeprom);
1494 u32 bytes_remaining;
1498 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1501 /* Check for wrap and zero */
1502 if (eeprom.offset + eeprom.len <= eeprom.offset)
1505 /* Check for exceeding total eeprom len */
1506 if (eeprom.offset + eeprom.len > total_len)
1509 data = kmalloc(PAGE_SIZE, GFP_USER);
1513 bytes_remaining = eeprom.len;
1514 while (bytes_remaining > 0) {
1515 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1517 ret = getter(dev, &eeprom, data);
1520 if (copy_to_user(userbuf, data, eeprom.len)) {
1524 userbuf += eeprom.len;
1525 eeprom.offset += eeprom.len;
1526 bytes_remaining -= eeprom.len;
1529 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
1530 eeprom.offset -= eeprom.len;
1531 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
1538 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
1540 const struct ethtool_ops *ops = dev->ethtool_ops;
1542 if (!ops->get_eeprom || !ops->get_eeprom_len ||
1543 !ops->get_eeprom_len(dev))
1546 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
1547 ops->get_eeprom_len(dev));
1550 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
1552 struct ethtool_eeprom eeprom;
1553 const struct ethtool_ops *ops = dev->ethtool_ops;
1554 void __user *userbuf = useraddr + sizeof(eeprom);
1555 u32 bytes_remaining;
1559 if (!ops->set_eeprom || !ops->get_eeprom_len ||
1560 !ops->get_eeprom_len(dev))
1563 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1566 /* Check for wrap and zero */
1567 if (eeprom.offset + eeprom.len <= eeprom.offset)
1570 /* Check for exceeding total eeprom len */
1571 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1574 data = kmalloc(PAGE_SIZE, GFP_USER);
1578 bytes_remaining = eeprom.len;
1579 while (bytes_remaining > 0) {
1580 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1582 if (copy_from_user(data, userbuf, eeprom.len)) {
1586 ret = ops->set_eeprom(dev, &eeprom, data);
1589 userbuf += eeprom.len;
1590 eeprom.offset += eeprom.len;
1591 bytes_remaining -= eeprom.len;
1598 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1599 void __user *useraddr)
1601 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1603 if (!dev->ethtool_ops->get_coalesce)
1606 dev->ethtool_ops->get_coalesce(dev, &coalesce);
1608 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1613 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1614 void __user *useraddr)
1616 struct ethtool_coalesce coalesce;
1618 if (!dev->ethtool_ops->set_coalesce)
1621 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1624 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
1627 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1629 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1631 if (!dev->ethtool_ops->get_ringparam)
1634 dev->ethtool_ops->get_ringparam(dev, &ringparam);
1636 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1641 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1643 struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM };
1645 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam)
1648 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1651 dev->ethtool_ops->get_ringparam(dev, &max);
1653 /* ensure new ring parameters are within the maximums */
1654 if (ringparam.rx_pending > max.rx_max_pending ||
1655 ringparam.rx_mini_pending > max.rx_mini_max_pending ||
1656 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending ||
1657 ringparam.tx_pending > max.tx_max_pending)
1660 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
1663 static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
1664 void __user *useraddr)
1666 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
1668 if (!dev->ethtool_ops->get_channels)
1671 dev->ethtool_ops->get_channels(dev, &channels);
1673 if (copy_to_user(useraddr, &channels, sizeof(channels)))
1678 static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
1679 void __user *useraddr)
1681 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS };
1682 u16 from_channel, to_channel;
1683 u32 max_rx_in_use = 0;
1686 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels)
1689 if (copy_from_user(&channels, useraddr, sizeof(channels)))
1692 dev->ethtool_ops->get_channels(dev, &curr);
1694 /* ensure new counts are within the maximums */
1695 if (channels.rx_count > curr.max_rx ||
1696 channels.tx_count > curr.max_tx ||
1697 channels.combined_count > curr.max_combined ||
1698 channels.other_count > curr.max_other)
1701 /* ensure the new Rx count fits within the configured Rx flow
1702 * indirection table settings */
1703 if (netif_is_rxfh_configured(dev) &&
1704 !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) &&
1705 (channels.combined_count + channels.rx_count) <= max_rx_in_use)
1708 /* Disabling channels, query zero-copy AF_XDP sockets */
1709 from_channel = channels.combined_count +
1710 min(channels.rx_count, channels.tx_count);
1711 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count);
1712 for (i = from_channel; i < to_channel; i++)
1713 if (xdp_get_umem_from_qid(dev, i))
1716 return dev->ethtool_ops->set_channels(dev, &channels);
1719 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1721 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM };
1723 if (!dev->ethtool_ops->get_pauseparam)
1726 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1728 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1733 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1735 struct ethtool_pauseparam pauseparam;
1737 if (!dev->ethtool_ops->set_pauseparam)
1740 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1743 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1746 static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1748 struct ethtool_test test;
1749 const struct ethtool_ops *ops = dev->ethtool_ops;
1753 if (!ops->self_test || !ops->get_sset_count)
1756 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
1759 WARN_ON(test_len == 0);
1761 if (copy_from_user(&test, useraddr, sizeof(test)))
1764 test.len = test_len;
1765 data = kmalloc_array(test_len, sizeof(u64), GFP_USER);
1769 ops->self_test(dev, &test, data);
1772 if (copy_to_user(useraddr, &test, sizeof(test)))
1774 useraddr += sizeof(test);
1775 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1784 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1786 struct ethtool_gstrings gstrings;
1790 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1793 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
1796 if (ret > S32_MAX / ETH_GSTRING_LEN)
1803 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN));
1807 __ethtool_get_strings(dev, gstrings.string_set, data);
1813 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1815 useraddr += sizeof(gstrings);
1817 copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1826 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1828 struct ethtool_value id;
1830 const struct ethtool_ops *ops = dev->ethtool_ops;
1833 if (!ops->set_phys_id)
1839 if (copy_from_user(&id, useraddr, sizeof(id)))
1842 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
1846 /* Drop the RTNL lock while waiting, but prevent reentry or
1847 * removal of the device.
1854 /* Driver will handle this itself */
1855 schedule_timeout_interruptible(
1856 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
1858 /* Driver expects to be called at twice the frequency in rc */
1859 int n = rc * 2, i, interval = HZ / n;
1861 /* Count down seconds */
1863 /* Count down iterations per second */
1867 rc = ops->set_phys_id(dev,
1868 (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
1872 schedule_timeout_interruptible(interval);
1873 } while (!signal_pending(current) && --i != 0);
1874 } while (!signal_pending(current) &&
1875 (id.data == 0 || --id.data != 0));
1882 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
1886 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1888 struct ethtool_stats stats;
1889 const struct ethtool_ops *ops = dev->ethtool_ops;
1893 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1896 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
1899 if (n_stats > S32_MAX / sizeof(u64))
1901 WARN_ON_ONCE(!n_stats);
1902 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1905 stats.n_stats = n_stats;
1908 data = vzalloc(array_size(n_stats, sizeof(u64)));
1911 ops->get_ethtool_stats(dev, &stats, data);
1917 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1919 useraddr += sizeof(stats);
1920 if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
1929 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
1931 const struct ethtool_ops *ops = dev->ethtool_ops;
1932 struct phy_device *phydev = dev->phydev;
1933 struct ethtool_stats stats;
1937 if (!phydev && (!ops->get_ethtool_phy_stats || !ops->get_sset_count))
1940 if (dev->phydev && !ops->get_ethtool_phy_stats)
1941 n_stats = phy_ethtool_get_sset_count(dev->phydev);
1943 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS);
1946 if (n_stats > S32_MAX / sizeof(u64))
1948 WARN_ON_ONCE(!n_stats);
1950 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1953 stats.n_stats = n_stats;
1956 data = vzalloc(array_size(n_stats, sizeof(u64)));
1960 if (dev->phydev && !ops->get_ethtool_phy_stats) {
1961 ret = phy_ethtool_get_stats(dev->phydev, &stats, data);
1965 ops->get_ethtool_phy_stats(dev, &stats, data);
1972 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1974 useraddr += sizeof(stats);
1975 if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
1984 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
1986 struct ethtool_perm_addr epaddr;
1988 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
1991 if (epaddr.size < dev->addr_len)
1993 epaddr.size = dev->addr_len;
1995 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
1997 useraddr += sizeof(epaddr);
1998 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
2003 static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
2004 u32 cmd, u32 (*actor)(struct net_device *))
2006 struct ethtool_value edata = { .cmd = cmd };
2011 edata.data = actor(dev);
2013 if (copy_to_user(useraddr, &edata, sizeof(edata)))
2018 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
2019 void (*actor)(struct net_device *, u32))
2021 struct ethtool_value edata;
2026 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2029 actor(dev, edata.data);
2033 static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
2034 int (*actor)(struct net_device *, u32))
2036 struct ethtool_value edata;
2041 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2044 return actor(dev, edata.data);
2047 static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
2048 char __user *useraddr)
2050 struct ethtool_flash efl;
2052 if (copy_from_user(&efl, useraddr, sizeof(efl)))
2054 efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
2056 if (!dev->ethtool_ops->flash_device)
2057 return devlink_compat_flash_update(dev, efl.data);
2059 return dev->ethtool_ops->flash_device(dev, &efl);
2062 static int ethtool_set_dump(struct net_device *dev,
2063 void __user *useraddr)
2065 struct ethtool_dump dump;
2067 if (!dev->ethtool_ops->set_dump)
2070 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2073 return dev->ethtool_ops->set_dump(dev, &dump);
2076 static int ethtool_get_dump_flag(struct net_device *dev,
2077 void __user *useraddr)
2080 struct ethtool_dump dump;
2081 const struct ethtool_ops *ops = dev->ethtool_ops;
2083 if (!ops->get_dump_flag)
2086 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2089 ret = ops->get_dump_flag(dev, &dump);
2093 if (copy_to_user(useraddr, &dump, sizeof(dump)))
2098 static int ethtool_get_dump_data(struct net_device *dev,
2099 void __user *useraddr)
2103 struct ethtool_dump dump, tmp;
2104 const struct ethtool_ops *ops = dev->ethtool_ops;
2107 if (!ops->get_dump_data || !ops->get_dump_flag)
2110 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2113 memset(&tmp, 0, sizeof(tmp));
2114 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
2115 ret = ops->get_dump_flag(dev, &tmp);
2119 len = min(tmp.len, dump.len);
2123 /* Don't ever let the driver think there's more space available
2124 * than it requested with .get_dump_flag().
2128 /* Always allocate enough space to hold the whole thing so that the
2129 * driver does not need to check the length and bother with partial
2132 data = vzalloc(tmp.len);
2135 ret = ops->get_dump_data(dev, &dump, data);
2139 /* There are two sane possibilities:
2140 * 1. The driver's .get_dump_data() does not touch dump.len.
2141 * 2. Or it may set dump.len to how much it really writes, which
2142 * should be tmp.len (or len if it can do a partial dump).
2143 * In any case respond to userspace with the actual length of data
2146 WARN_ON(dump.len != len && dump.len != tmp.len);
2149 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
2153 useraddr += offsetof(struct ethtool_dump, data);
2154 if (copy_to_user(useraddr, data, len))
2161 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
2164 struct ethtool_ts_info info;
2165 const struct ethtool_ops *ops = dev->ethtool_ops;
2166 struct phy_device *phydev = dev->phydev;
2168 memset(&info, 0, sizeof(info));
2169 info.cmd = ETHTOOL_GET_TS_INFO;
2171 if (phydev && phydev->drv && phydev->drv->ts_info) {
2172 err = phydev->drv->ts_info(phydev, &info);
2173 } else if (ops->get_ts_info) {
2174 err = ops->get_ts_info(dev, &info);
2176 info.so_timestamping =
2177 SOF_TIMESTAMPING_RX_SOFTWARE |
2178 SOF_TIMESTAMPING_SOFTWARE;
2179 info.phc_index = -1;
2185 if (copy_to_user(useraddr, &info, sizeof(info)))
2191 static int __ethtool_get_module_info(struct net_device *dev,
2192 struct ethtool_modinfo *modinfo)
2194 const struct ethtool_ops *ops = dev->ethtool_ops;
2195 struct phy_device *phydev = dev->phydev;
2198 return sfp_get_module_info(dev->sfp_bus, modinfo);
2200 if (phydev && phydev->drv && phydev->drv->module_info)
2201 return phydev->drv->module_info(phydev, modinfo);
2203 if (ops->get_module_info)
2204 return ops->get_module_info(dev, modinfo);
2209 static int ethtool_get_module_info(struct net_device *dev,
2210 void __user *useraddr)
2213 struct ethtool_modinfo modinfo;
2215 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
2218 ret = __ethtool_get_module_info(dev, &modinfo);
2222 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
2228 static int __ethtool_get_module_eeprom(struct net_device *dev,
2229 struct ethtool_eeprom *ee, u8 *data)
2231 const struct ethtool_ops *ops = dev->ethtool_ops;
2232 struct phy_device *phydev = dev->phydev;
2235 return sfp_get_module_eeprom(dev->sfp_bus, ee, data);
2237 if (phydev && phydev->drv && phydev->drv->module_eeprom)
2238 return phydev->drv->module_eeprom(phydev, ee, data);
2240 if (ops->get_module_eeprom)
2241 return ops->get_module_eeprom(dev, ee, data);
2246 static int ethtool_get_module_eeprom(struct net_device *dev,
2247 void __user *useraddr)
2250 struct ethtool_modinfo modinfo;
2252 ret = __ethtool_get_module_info(dev, &modinfo);
2256 return ethtool_get_any_eeprom(dev, useraddr,
2257 __ethtool_get_module_eeprom,
2258 modinfo.eeprom_len);
2261 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna)
2264 case ETHTOOL_RX_COPYBREAK:
2265 case ETHTOOL_TX_COPYBREAK:
2266 if (tuna->len != sizeof(u32) ||
2267 tuna->type_id != ETHTOOL_TUNABLE_U32)
2270 case ETHTOOL_PFC_PREVENTION_TOUT:
2271 if (tuna->len != sizeof(u16) ||
2272 tuna->type_id != ETHTOOL_TUNABLE_U16)
2282 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr)
2285 struct ethtool_tunable tuna;
2286 const struct ethtool_ops *ops = dev->ethtool_ops;
2289 if (!ops->get_tunable)
2291 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2293 ret = ethtool_tunable_valid(&tuna);
2296 data = kmalloc(tuna.len, GFP_USER);
2299 ret = ops->get_tunable(dev, &tuna, data);
2302 useraddr += sizeof(tuna);
2304 if (copy_to_user(useraddr, data, tuna.len))
2313 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr)
2316 struct ethtool_tunable tuna;
2317 const struct ethtool_ops *ops = dev->ethtool_ops;
2320 if (!ops->set_tunable)
2322 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2324 ret = ethtool_tunable_valid(&tuna);
2327 useraddr += sizeof(tuna);
2328 data = memdup_user(useraddr, tuna.len);
2330 return PTR_ERR(data);
2331 ret = ops->set_tunable(dev, &tuna, data);
2337 static noinline_for_stack int
2338 ethtool_get_per_queue_coalesce(struct net_device *dev,
2339 void __user *useraddr,
2340 struct ethtool_per_queue_op *per_queue_opt)
2344 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2346 if (!dev->ethtool_ops->get_per_queue_coalesce)
2349 useraddr += sizeof(*per_queue_opt);
2351 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask,
2354 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2355 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
2357 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce);
2360 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
2362 useraddr += sizeof(coalesce);
2368 static noinline_for_stack int
2369 ethtool_set_per_queue_coalesce(struct net_device *dev,
2370 void __user *useraddr,
2371 struct ethtool_per_queue_op *per_queue_opt)
2376 struct ethtool_coalesce *backup = NULL, *tmp = NULL;
2377 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2379 if ((!dev->ethtool_ops->set_per_queue_coalesce) ||
2380 (!dev->ethtool_ops->get_per_queue_coalesce))
2383 useraddr += sizeof(*per_queue_opt);
2385 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE);
2386 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE);
2387 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL);
2391 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2392 struct ethtool_coalesce coalesce;
2394 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp);
2400 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) {
2405 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce);
2409 useraddr += sizeof(coalesce);
2415 for_each_set_bit(i, queue_mask, bit) {
2416 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp);
2425 static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev,
2426 void __user *useraddr, u32 sub_cmd)
2428 struct ethtool_per_queue_op per_queue_opt;
2430 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt)))
2433 if (per_queue_opt.sub_command != sub_cmd)
2436 switch (per_queue_opt.sub_command) {
2437 case ETHTOOL_GCOALESCE:
2438 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt);
2439 case ETHTOOL_SCOALESCE:
2440 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt);
2446 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna)
2449 case ETHTOOL_PHY_DOWNSHIFT:
2450 case ETHTOOL_PHY_FAST_LINK_DOWN:
2451 if (tuna->len != sizeof(u8) ||
2452 tuna->type_id != ETHTOOL_TUNABLE_U8)
2455 case ETHTOOL_PHY_EDPD:
2456 if (tuna->len != sizeof(u16) ||
2457 tuna->type_id != ETHTOOL_TUNABLE_U16)
2467 static int get_phy_tunable(struct net_device *dev, void __user *useraddr)
2470 struct ethtool_tunable tuna;
2471 struct phy_device *phydev = dev->phydev;
2474 if (!(phydev && phydev->drv && phydev->drv->get_tunable))
2477 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2479 ret = ethtool_phy_tunable_valid(&tuna);
2482 data = kmalloc(tuna.len, GFP_USER);
2485 mutex_lock(&phydev->lock);
2486 ret = phydev->drv->get_tunable(phydev, &tuna, data);
2487 mutex_unlock(&phydev->lock);
2490 useraddr += sizeof(tuna);
2492 if (copy_to_user(useraddr, data, tuna.len))
2501 static int set_phy_tunable(struct net_device *dev, void __user *useraddr)
2504 struct ethtool_tunable tuna;
2505 struct phy_device *phydev = dev->phydev;
2508 if (!(phydev && phydev->drv && phydev->drv->set_tunable))
2510 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2512 ret = ethtool_phy_tunable_valid(&tuna);
2515 useraddr += sizeof(tuna);
2516 data = memdup_user(useraddr, tuna.len);
2518 return PTR_ERR(data);
2519 mutex_lock(&phydev->lock);
2520 ret = phydev->drv->set_tunable(phydev, &tuna, data);
2521 mutex_unlock(&phydev->lock);
2527 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr)
2529 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM };
2532 if (!dev->ethtool_ops->get_fecparam)
2535 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam);
2539 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam)))
2544 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr)
2546 struct ethtool_fecparam fecparam;
2548 if (!dev->ethtool_ops->set_fecparam)
2551 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam)))
2554 return dev->ethtool_ops->set_fecparam(dev, &fecparam);
2557 /* The main entry point in this file. Called from net/core/dev_ioctl.c */
2559 int dev_ethtool(struct net *net, struct ifreq *ifr)
2561 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
2562 void __user *useraddr = ifr->ifr_data;
2563 u32 ethcmd, sub_cmd;
2565 netdev_features_t old_features;
2567 if (!dev || !netif_device_present(dev))
2570 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd)))
2573 if (ethcmd == ETHTOOL_PERQUEUE) {
2574 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd)))
2579 /* Allow some commands to be done by anyone */
2582 case ETHTOOL_GDRVINFO:
2583 case ETHTOOL_GMSGLVL:
2585 case ETHTOOL_GCOALESCE:
2586 case ETHTOOL_GRINGPARAM:
2587 case ETHTOOL_GPAUSEPARAM:
2588 case ETHTOOL_GRXCSUM:
2589 case ETHTOOL_GTXCSUM:
2591 case ETHTOOL_GSSET_INFO:
2592 case ETHTOOL_GSTRINGS:
2593 case ETHTOOL_GSTATS:
2594 case ETHTOOL_GPHYSTATS:
2596 case ETHTOOL_GPERMADDR:
2600 case ETHTOOL_GFLAGS:
2601 case ETHTOOL_GPFLAGS:
2603 case ETHTOOL_GRXRINGS:
2604 case ETHTOOL_GRXCLSRLCNT:
2605 case ETHTOOL_GRXCLSRULE:
2606 case ETHTOOL_GRXCLSRLALL:
2607 case ETHTOOL_GRXFHINDIR:
2609 case ETHTOOL_GFEATURES:
2610 case ETHTOOL_GCHANNELS:
2611 case ETHTOOL_GET_TS_INFO:
2613 case ETHTOOL_GTUNABLE:
2614 case ETHTOOL_PHY_GTUNABLE:
2615 case ETHTOOL_GLINKSETTINGS:
2616 case ETHTOOL_GFECPARAM:
2619 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
2623 if (dev->ethtool_ops->begin) {
2624 rc = dev->ethtool_ops->begin(dev);
2628 old_features = dev->features;
2632 rc = ethtool_get_settings(dev, useraddr);
2635 rc = ethtool_set_settings(dev, useraddr);
2637 case ETHTOOL_GDRVINFO:
2638 rc = ethtool_get_drvinfo(dev, useraddr);
2641 rc = ethtool_get_regs(dev, useraddr);
2644 rc = ethtool_get_wol(dev, useraddr);
2647 rc = ethtool_set_wol(dev, useraddr);
2649 case ETHTOOL_GMSGLVL:
2650 rc = ethtool_get_value(dev, useraddr, ethcmd,
2651 dev->ethtool_ops->get_msglevel);
2653 case ETHTOOL_SMSGLVL:
2654 rc = ethtool_set_value_void(dev, useraddr,
2655 dev->ethtool_ops->set_msglevel);
2658 rc = ethtool_get_eee(dev, useraddr);
2661 rc = ethtool_set_eee(dev, useraddr);
2663 case ETHTOOL_NWAY_RST:
2664 rc = ethtool_nway_reset(dev);
2667 rc = ethtool_get_link(dev, useraddr);
2669 case ETHTOOL_GEEPROM:
2670 rc = ethtool_get_eeprom(dev, useraddr);
2672 case ETHTOOL_SEEPROM:
2673 rc = ethtool_set_eeprom(dev, useraddr);
2675 case ETHTOOL_GCOALESCE:
2676 rc = ethtool_get_coalesce(dev, useraddr);
2678 case ETHTOOL_SCOALESCE:
2679 rc = ethtool_set_coalesce(dev, useraddr);
2681 case ETHTOOL_GRINGPARAM:
2682 rc = ethtool_get_ringparam(dev, useraddr);
2684 case ETHTOOL_SRINGPARAM:
2685 rc = ethtool_set_ringparam(dev, useraddr);
2687 case ETHTOOL_GPAUSEPARAM:
2688 rc = ethtool_get_pauseparam(dev, useraddr);
2690 case ETHTOOL_SPAUSEPARAM:
2691 rc = ethtool_set_pauseparam(dev, useraddr);
2694 rc = ethtool_self_test(dev, useraddr);
2696 case ETHTOOL_GSTRINGS:
2697 rc = ethtool_get_strings(dev, useraddr);
2699 case ETHTOOL_PHYS_ID:
2700 rc = ethtool_phys_id(dev, useraddr);
2702 case ETHTOOL_GSTATS:
2703 rc = ethtool_get_stats(dev, useraddr);
2705 case ETHTOOL_GPERMADDR:
2706 rc = ethtool_get_perm_addr(dev, useraddr);
2708 case ETHTOOL_GFLAGS:
2709 rc = ethtool_get_value(dev, useraddr, ethcmd,
2710 __ethtool_get_flags);
2712 case ETHTOOL_SFLAGS:
2713 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
2715 case ETHTOOL_GPFLAGS:
2716 rc = ethtool_get_value(dev, useraddr, ethcmd,
2717 dev->ethtool_ops->get_priv_flags);
2719 case ETHTOOL_SPFLAGS:
2720 rc = ethtool_set_value(dev, useraddr,
2721 dev->ethtool_ops->set_priv_flags);
2724 case ETHTOOL_GRXRINGS:
2725 case ETHTOOL_GRXCLSRLCNT:
2726 case ETHTOOL_GRXCLSRULE:
2727 case ETHTOOL_GRXCLSRLALL:
2728 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
2731 case ETHTOOL_SRXCLSRLDEL:
2732 case ETHTOOL_SRXCLSRLINS:
2733 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
2735 case ETHTOOL_FLASHDEV:
2736 rc = ethtool_flash_device(dev, useraddr);
2739 rc = ethtool_reset(dev, useraddr);
2741 case ETHTOOL_GSSET_INFO:
2742 rc = ethtool_get_sset_info(dev, useraddr);
2744 case ETHTOOL_GRXFHINDIR:
2745 rc = ethtool_get_rxfh_indir(dev, useraddr);
2747 case ETHTOOL_SRXFHINDIR:
2748 rc = ethtool_set_rxfh_indir(dev, useraddr);
2751 rc = ethtool_get_rxfh(dev, useraddr);
2754 rc = ethtool_set_rxfh(dev, useraddr);
2756 case ETHTOOL_GFEATURES:
2757 rc = ethtool_get_features(dev, useraddr);
2759 case ETHTOOL_SFEATURES:
2760 rc = ethtool_set_features(dev, useraddr);
2762 case ETHTOOL_GTXCSUM:
2763 case ETHTOOL_GRXCSUM:
2768 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
2770 case ETHTOOL_STXCSUM:
2771 case ETHTOOL_SRXCSUM:
2776 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
2778 case ETHTOOL_GCHANNELS:
2779 rc = ethtool_get_channels(dev, useraddr);
2781 case ETHTOOL_SCHANNELS:
2782 rc = ethtool_set_channels(dev, useraddr);
2784 case ETHTOOL_SET_DUMP:
2785 rc = ethtool_set_dump(dev, useraddr);
2787 case ETHTOOL_GET_DUMP_FLAG:
2788 rc = ethtool_get_dump_flag(dev, useraddr);
2790 case ETHTOOL_GET_DUMP_DATA:
2791 rc = ethtool_get_dump_data(dev, useraddr);
2793 case ETHTOOL_GET_TS_INFO:
2794 rc = ethtool_get_ts_info(dev, useraddr);
2796 case ETHTOOL_GMODULEINFO:
2797 rc = ethtool_get_module_info(dev, useraddr);
2799 case ETHTOOL_GMODULEEEPROM:
2800 rc = ethtool_get_module_eeprom(dev, useraddr);
2802 case ETHTOOL_GTUNABLE:
2803 rc = ethtool_get_tunable(dev, useraddr);
2805 case ETHTOOL_STUNABLE:
2806 rc = ethtool_set_tunable(dev, useraddr);
2808 case ETHTOOL_GPHYSTATS:
2809 rc = ethtool_get_phy_stats(dev, useraddr);
2811 case ETHTOOL_PERQUEUE:
2812 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd);
2814 case ETHTOOL_GLINKSETTINGS:
2815 rc = ethtool_get_link_ksettings(dev, useraddr);
2817 case ETHTOOL_SLINKSETTINGS:
2818 rc = ethtool_set_link_ksettings(dev, useraddr);
2820 case ETHTOOL_PHY_GTUNABLE:
2821 rc = get_phy_tunable(dev, useraddr);
2823 case ETHTOOL_PHY_STUNABLE:
2824 rc = set_phy_tunable(dev, useraddr);
2826 case ETHTOOL_GFECPARAM:
2827 rc = ethtool_get_fecparam(dev, useraddr);
2829 case ETHTOOL_SFECPARAM:
2830 rc = ethtool_set_fecparam(dev, useraddr);
2836 if (dev->ethtool_ops->complete)
2837 dev->ethtool_ops->complete(dev);
2839 if (old_features != dev->features)
2840 netdev_features_change(dev);
2845 struct ethtool_rx_flow_key {
2846 struct flow_dissector_key_basic basic;
2848 struct flow_dissector_key_ipv4_addrs ipv4;
2849 struct flow_dissector_key_ipv6_addrs ipv6;
2851 struct flow_dissector_key_ports tp;
2852 struct flow_dissector_key_ip ip;
2853 struct flow_dissector_key_vlan vlan;
2854 struct flow_dissector_key_eth_addrs eth_addrs;
2855 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
2857 struct ethtool_rx_flow_match {
2858 struct flow_dissector dissector;
2859 struct ethtool_rx_flow_key key;
2860 struct ethtool_rx_flow_key mask;
2863 struct ethtool_rx_flow_rule *
2864 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input)
2866 const struct ethtool_rx_flow_spec *fs = input->fs;
2867 static struct in6_addr zero_addr = {};
2868 struct ethtool_rx_flow_match *match;
2869 struct ethtool_rx_flow_rule *flow;
2870 struct flow_action_entry *act;
2872 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) +
2873 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL);
2875 return ERR_PTR(-ENOMEM);
2877 /* ethtool_rx supports only one single action per rule. */
2878 flow->rule = flow_rule_alloc(1);
2881 return ERR_PTR(-ENOMEM);
2884 match = (struct ethtool_rx_flow_match *)flow->priv;
2885 flow->rule->match.dissector = &match->dissector;
2886 flow->rule->match.mask = &match->mask;
2887 flow->rule->match.key = &match->key;
2889 match->mask.basic.n_proto = htons(0xffff);
2891 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) {
2893 const struct ethhdr *ether_spec, *ether_m_spec;
2895 ether_spec = &fs->h_u.ether_spec;
2896 ether_m_spec = &fs->m_u.ether_spec;
2898 if (!is_zero_ether_addr(ether_m_spec->h_source)) {
2899 ether_addr_copy(match->key.eth_addrs.src,
2900 ether_spec->h_source);
2901 ether_addr_copy(match->mask.eth_addrs.src,
2902 ether_m_spec->h_source);
2904 if (!is_zero_ether_addr(ether_m_spec->h_dest)) {
2905 ether_addr_copy(match->key.eth_addrs.dst,
2906 ether_spec->h_dest);
2907 ether_addr_copy(match->mask.eth_addrs.dst,
2908 ether_m_spec->h_dest);
2910 if (ether_m_spec->h_proto) {
2911 match->key.basic.n_proto = ether_spec->h_proto;
2912 match->mask.basic.n_proto = ether_m_spec->h_proto;
2918 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec;
2920 match->key.basic.n_proto = htons(ETH_P_IP);
2922 v4_spec = &fs->h_u.tcp_ip4_spec;
2923 v4_m_spec = &fs->m_u.tcp_ip4_spec;
2925 if (v4_m_spec->ip4src) {
2926 match->key.ipv4.src = v4_spec->ip4src;
2927 match->mask.ipv4.src = v4_m_spec->ip4src;
2929 if (v4_m_spec->ip4dst) {
2930 match->key.ipv4.dst = v4_spec->ip4dst;
2931 match->mask.ipv4.dst = v4_m_spec->ip4dst;
2933 if (v4_m_spec->ip4src ||
2934 v4_m_spec->ip4dst) {
2935 match->dissector.used_keys |=
2936 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS);
2937 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] =
2938 offsetof(struct ethtool_rx_flow_key, ipv4);
2940 if (v4_m_spec->psrc) {
2941 match->key.tp.src = v4_spec->psrc;
2942 match->mask.tp.src = v4_m_spec->psrc;
2944 if (v4_m_spec->pdst) {
2945 match->key.tp.dst = v4_spec->pdst;
2946 match->mask.tp.dst = v4_m_spec->pdst;
2948 if (v4_m_spec->psrc ||
2950 match->dissector.used_keys |=
2951 BIT(FLOW_DISSECTOR_KEY_PORTS);
2952 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] =
2953 offsetof(struct ethtool_rx_flow_key, tp);
2955 if (v4_m_spec->tos) {
2956 match->key.ip.tos = v4_spec->tos;
2957 match->mask.ip.tos = v4_m_spec->tos;
2958 match->dissector.used_keys |=
2959 BIT(FLOW_DISSECTOR_KEY_IP);
2960 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] =
2961 offsetof(struct ethtool_rx_flow_key, ip);
2967 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec;
2969 match->key.basic.n_proto = htons(ETH_P_IPV6);
2971 v6_spec = &fs->h_u.tcp_ip6_spec;
2972 v6_m_spec = &fs->m_u.tcp_ip6_spec;
2973 if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr))) {
2974 memcpy(&match->key.ipv6.src, v6_spec->ip6src,
2975 sizeof(match->key.ipv6.src));
2976 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src,
2977 sizeof(match->mask.ipv6.src));
2979 if (memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) {
2980 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst,
2981 sizeof(match->key.ipv6.dst));
2982 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst,
2983 sizeof(match->mask.ipv6.dst));
2985 if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr)) ||
2986 memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr))) {
2987 match->dissector.used_keys |=
2988 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS);
2989 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] =
2990 offsetof(struct ethtool_rx_flow_key, ipv6);
2992 if (v6_m_spec->psrc) {
2993 match->key.tp.src = v6_spec->psrc;
2994 match->mask.tp.src = v6_m_spec->psrc;
2996 if (v6_m_spec->pdst) {
2997 match->key.tp.dst = v6_spec->pdst;
2998 match->mask.tp.dst = v6_m_spec->pdst;
3000 if (v6_m_spec->psrc ||
3002 match->dissector.used_keys |=
3003 BIT(FLOW_DISSECTOR_KEY_PORTS);
3004 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] =
3005 offsetof(struct ethtool_rx_flow_key, tp);
3007 if (v6_m_spec->tclass) {
3008 match->key.ip.tos = v6_spec->tclass;
3009 match->mask.ip.tos = v6_m_spec->tclass;
3010 match->dissector.used_keys |=
3011 BIT(FLOW_DISSECTOR_KEY_IP);
3012 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] =
3013 offsetof(struct ethtool_rx_flow_key, ip);
3018 ethtool_rx_flow_rule_destroy(flow);
3019 return ERR_PTR(-EINVAL);
3022 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) {
3025 match->key.basic.ip_proto = IPPROTO_TCP;
3029 match->key.basic.ip_proto = IPPROTO_UDP;
3032 match->mask.basic.ip_proto = 0xff;
3034 match->dissector.used_keys |= BIT(FLOW_DISSECTOR_KEY_BASIC);
3035 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] =
3036 offsetof(struct ethtool_rx_flow_key, basic);
3038 if (fs->flow_type & FLOW_EXT) {
3039 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext;
3040 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext;
3042 if (ext_m_spec->vlan_etype) {
3043 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype;
3044 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype;
3047 if (ext_m_spec->vlan_tci) {
3048 match->key.vlan.vlan_id =
3049 ntohs(ext_h_spec->vlan_tci) & 0x0fff;
3050 match->mask.vlan.vlan_id =
3051 ntohs(ext_m_spec->vlan_tci) & 0x0fff;
3053 match->key.vlan.vlan_dei =
3054 !!(ext_h_spec->vlan_tci & htons(0x1000));
3055 match->mask.vlan.vlan_dei =
3056 !!(ext_m_spec->vlan_tci & htons(0x1000));
3058 match->key.vlan.vlan_priority =
3059 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13;
3060 match->mask.vlan.vlan_priority =
3061 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13;
3064 if (ext_m_spec->vlan_etype ||
3065 ext_m_spec->vlan_tci) {
3066 match->dissector.used_keys |=
3067 BIT(FLOW_DISSECTOR_KEY_VLAN);
3068 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] =
3069 offsetof(struct ethtool_rx_flow_key, vlan);
3072 if (fs->flow_type & FLOW_MAC_EXT) {
3073 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext;
3074 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext;
3076 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest,
3078 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest,
3081 match->dissector.used_keys |=
3082 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS);
3083 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] =
3084 offsetof(struct ethtool_rx_flow_key, eth_addrs);
3087 act = &flow->rule->action.entries[0];
3088 switch (fs->ring_cookie) {
3089 case RX_CLS_FLOW_DISC:
3090 act->id = FLOW_ACTION_DROP;
3092 case RX_CLS_FLOW_WAKE:
3093 act->id = FLOW_ACTION_WAKE;
3096 act->id = FLOW_ACTION_QUEUE;
3097 if (fs->flow_type & FLOW_RSS)
3098 act->queue.ctx = input->rss_ctx;
3100 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie);
3101 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie);
3107 EXPORT_SYMBOL(ethtool_rx_flow_rule_create);
3109 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow)
3114 EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy);