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/compat.h>
11 #include <linux/etherdevice.h>
12 #include <linux/module.h>
13 #include <linux/types.h>
14 #include <linux/capability.h>
15 #include <linux/errno.h>
16 #include <linux/ethtool.h>
17 #include <linux/netdevice.h>
18 #include <linux/net_tstamp.h>
19 #include <linux/phy.h>
20 #include <linux/bitops.h>
21 #include <linux/uaccess.h>
22 #include <linux/vmalloc.h>
23 #include <linux/sfp.h>
24 #include <linux/slab.h>
25 #include <linux/rtnetlink.h>
26 #include <linux/sched/signal.h>
27 #include <linux/net.h>
28 #include <linux/pm_runtime.h>
29 #include <net/devlink.h>
31 #include <net/xdp_sock_drv.h>
32 #include <net/flow_offload.h>
33 #include <linux/ethtool_netlink.h>
34 #include <generated/utsrelease.h>
37 /* State held across locks and calls for commands which have devlink fallback */
38 struct ethtool_devlink_compat {
39 struct devlink *devlink;
41 struct ethtool_flash efl;
42 struct ethtool_drvinfo info;
46 static struct devlink *netdev_to_devlink_get(struct net_device *dev)
48 if (!dev->devlink_port)
50 return devlink_try_get(dev->devlink_port->devlink);
54 * Some useful ethtool_ops methods that're device independent.
55 * If we find that all drivers want to do the same thing here,
56 * we can turn these into dev_() function calls.
59 u32 ethtool_op_get_link(struct net_device *dev)
61 /* Synchronize carrier state with link watch, see also rtnl_getlink() */
62 linkwatch_sync_dev(dev);
64 return netif_carrier_ok(dev) ? 1 : 0;
66 EXPORT_SYMBOL(ethtool_op_get_link);
68 int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info)
70 info->so_timestamping =
71 SOF_TIMESTAMPING_TX_SOFTWARE |
72 SOF_TIMESTAMPING_RX_SOFTWARE |
73 SOF_TIMESTAMPING_SOFTWARE;
77 EXPORT_SYMBOL(ethtool_op_get_ts_info);
79 /* Handlers for each ethtool command */
81 static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
83 struct ethtool_gfeatures cmd = {
84 .cmd = ETHTOOL_GFEATURES,
85 .size = ETHTOOL_DEV_FEATURE_WORDS,
87 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
92 /* in case feature bits run out again */
93 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t));
95 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
96 features[i].available = (u32)(dev->hw_features >> (32 * i));
97 features[i].requested = (u32)(dev->wanted_features >> (32 * i));
98 features[i].active = (u32)(dev->features >> (32 * i));
99 features[i].never_changed =
100 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i));
103 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
104 if (get_user(copy_size, sizeaddr))
107 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
108 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
110 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
112 useraddr += sizeof(cmd);
113 if (copy_to_user(useraddr, features,
114 array_size(copy_size, sizeof(*features))))
120 static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
122 struct ethtool_sfeatures cmd;
123 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
124 netdev_features_t wanted = 0, valid = 0;
127 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
129 useraddr += sizeof(cmd);
131 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
134 if (copy_from_user(features, useraddr, sizeof(features)))
137 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
138 valid |= (netdev_features_t)features[i].valid << (32 * i);
139 wanted |= (netdev_features_t)features[i].requested << (32 * i);
142 if (valid & ~NETIF_F_ETHTOOL_BITS)
145 if (valid & ~dev->hw_features) {
146 valid &= dev->hw_features;
147 ret |= ETHTOOL_F_UNSUPPORTED;
150 dev->wanted_features &= ~valid;
151 dev->wanted_features |= wanted & valid;
152 __netdev_update_features(dev);
154 if ((dev->wanted_features ^ dev->features) & valid)
155 ret |= ETHTOOL_F_WISH;
160 static int __ethtool_get_sset_count(struct net_device *dev, int sset)
162 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops;
163 const struct ethtool_ops *ops = dev->ethtool_ops;
165 if (sset == ETH_SS_FEATURES)
166 return ARRAY_SIZE(netdev_features_strings);
168 if (sset == ETH_SS_RSS_HASH_FUNCS)
169 return ARRAY_SIZE(rss_hash_func_strings);
171 if (sset == ETH_SS_TUNABLES)
172 return ARRAY_SIZE(tunable_strings);
174 if (sset == ETH_SS_PHY_TUNABLES)
175 return ARRAY_SIZE(phy_tunable_strings);
177 if (sset == ETH_SS_PHY_STATS && dev->phydev &&
178 !ops->get_ethtool_phy_stats &&
179 phy_ops && phy_ops->get_sset_count)
180 return phy_ops->get_sset_count(dev->phydev);
182 if (sset == ETH_SS_LINK_MODES)
183 return __ETHTOOL_LINK_MODE_MASK_NBITS;
185 if (ops->get_sset_count && ops->get_strings)
186 return ops->get_sset_count(dev, sset);
191 static void __ethtool_get_strings(struct net_device *dev,
192 u32 stringset, u8 *data)
194 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops;
195 const struct ethtool_ops *ops = dev->ethtool_ops;
197 if (stringset == ETH_SS_FEATURES)
198 memcpy(data, netdev_features_strings,
199 sizeof(netdev_features_strings));
200 else if (stringset == ETH_SS_RSS_HASH_FUNCS)
201 memcpy(data, rss_hash_func_strings,
202 sizeof(rss_hash_func_strings));
203 else if (stringset == ETH_SS_TUNABLES)
204 memcpy(data, tunable_strings, sizeof(tunable_strings));
205 else if (stringset == ETH_SS_PHY_TUNABLES)
206 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings));
207 else if (stringset == ETH_SS_PHY_STATS && dev->phydev &&
208 !ops->get_ethtool_phy_stats && phy_ops &&
209 phy_ops->get_strings)
210 phy_ops->get_strings(dev->phydev, data);
211 else if (stringset == ETH_SS_LINK_MODES)
212 memcpy(data, link_mode_names,
213 __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN);
215 /* ops->get_strings is valid because checked earlier */
216 ops->get_strings(dev, stringset, data);
219 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd)
221 /* feature masks of legacy discrete ethtool ops */
224 case ETHTOOL_GTXCSUM:
225 case ETHTOOL_STXCSUM:
226 return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC |
228 case ETHTOOL_GRXCSUM:
229 case ETHTOOL_SRXCSUM:
230 return NETIF_F_RXCSUM;
233 return NETIF_F_SG | NETIF_F_FRAGLIST;
236 return NETIF_F_ALL_TSO;
248 static int ethtool_get_one_feature(struct net_device *dev,
249 char __user *useraddr, u32 ethcmd)
251 netdev_features_t mask = ethtool_get_feature_mask(ethcmd);
252 struct ethtool_value edata = {
254 .data = !!(dev->features & mask),
257 if (copy_to_user(useraddr, &edata, sizeof(edata)))
262 static int ethtool_set_one_feature(struct net_device *dev,
263 void __user *useraddr, u32 ethcmd)
265 struct ethtool_value edata;
266 netdev_features_t mask;
268 if (copy_from_user(&edata, useraddr, sizeof(edata)))
271 mask = ethtool_get_feature_mask(ethcmd);
272 mask &= dev->hw_features;
277 dev->wanted_features |= mask;
279 dev->wanted_features &= ~mask;
281 __netdev_update_features(dev);
286 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
287 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
288 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
289 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
292 static u32 __ethtool_get_flags(struct net_device *dev)
296 if (dev->features & NETIF_F_LRO)
297 flags |= ETH_FLAG_LRO;
298 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
299 flags |= ETH_FLAG_RXVLAN;
300 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX)
301 flags |= ETH_FLAG_TXVLAN;
302 if (dev->features & NETIF_F_NTUPLE)
303 flags |= ETH_FLAG_NTUPLE;
304 if (dev->features & NETIF_F_RXHASH)
305 flags |= ETH_FLAG_RXHASH;
310 static int __ethtool_set_flags(struct net_device *dev, u32 data)
312 netdev_features_t features = 0, changed;
314 if (data & ~ETH_ALL_FLAGS)
317 if (data & ETH_FLAG_LRO)
318 features |= NETIF_F_LRO;
319 if (data & ETH_FLAG_RXVLAN)
320 features |= NETIF_F_HW_VLAN_CTAG_RX;
321 if (data & ETH_FLAG_TXVLAN)
322 features |= NETIF_F_HW_VLAN_CTAG_TX;
323 if (data & ETH_FLAG_NTUPLE)
324 features |= NETIF_F_NTUPLE;
325 if (data & ETH_FLAG_RXHASH)
326 features |= NETIF_F_RXHASH;
328 /* allow changing only bits set in hw_features */
329 changed = (features ^ dev->features) & ETH_ALL_FEATURES;
330 if (changed & ~dev->hw_features)
331 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
333 dev->wanted_features =
334 (dev->wanted_features & ~changed) | (features & changed);
336 __netdev_update_features(dev);
341 /* Given two link masks, AND them together and save the result in dst. */
342 void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst,
343 struct ethtool_link_ksettings *src)
345 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS);
346 unsigned int idx = 0;
348 for (; idx < size; idx++) {
349 dst->link_modes.supported[idx] &=
350 src->link_modes.supported[idx];
351 dst->link_modes.advertising[idx] &=
352 src->link_modes.advertising[idx];
355 EXPORT_SYMBOL(ethtool_intersect_link_masks);
357 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
363 EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode);
365 /* return false if src had higher bits set. lower bits always updated. */
366 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
367 const unsigned long *src)
369 *legacy_u32 = src[0];
370 return find_next_bit(src, __ETHTOOL_LINK_MODE_MASK_NBITS, 32) ==
371 __ETHTOOL_LINK_MODE_MASK_NBITS;
373 EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32);
375 /* return false if ksettings link modes had higher bits
376 * set. legacy_settings always updated (best effort)
379 convert_link_ksettings_to_legacy_settings(
380 struct ethtool_cmd *legacy_settings,
381 const struct ethtool_link_ksettings *link_ksettings)
385 memset(legacy_settings, 0, sizeof(*legacy_settings));
386 /* this also clears the deprecated fields in legacy structure:
392 retval &= ethtool_convert_link_mode_to_legacy_u32(
393 &legacy_settings->supported,
394 link_ksettings->link_modes.supported);
395 retval &= ethtool_convert_link_mode_to_legacy_u32(
396 &legacy_settings->advertising,
397 link_ksettings->link_modes.advertising);
398 retval &= ethtool_convert_link_mode_to_legacy_u32(
399 &legacy_settings->lp_advertising,
400 link_ksettings->link_modes.lp_advertising);
401 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed);
402 legacy_settings->duplex
403 = link_ksettings->base.duplex;
404 legacy_settings->port
405 = link_ksettings->base.port;
406 legacy_settings->phy_address
407 = link_ksettings->base.phy_address;
408 legacy_settings->autoneg
409 = link_ksettings->base.autoneg;
410 legacy_settings->mdio_support
411 = link_ksettings->base.mdio_support;
412 legacy_settings->eth_tp_mdix
413 = link_ksettings->base.eth_tp_mdix;
414 legacy_settings->eth_tp_mdix_ctrl
415 = link_ksettings->base.eth_tp_mdix_ctrl;
416 legacy_settings->transceiver
417 = link_ksettings->base.transceiver;
421 /* number of 32-bit words to store the user's link mode bitmaps */
422 #define __ETHTOOL_LINK_MODE_MASK_NU32 \
423 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
425 /* layout of the struct passed from/to userland */
426 struct ethtool_link_usettings {
427 struct ethtool_link_settings base;
429 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32];
430 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
431 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
435 /* Internal kernel helper to query a device ethtool_link_settings. */
436 int __ethtool_get_link_ksettings(struct net_device *dev,
437 struct ethtool_link_ksettings *link_ksettings)
441 if (!dev->ethtool_ops->get_link_ksettings)
444 memset(link_ksettings, 0, sizeof(*link_ksettings));
445 return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings);
447 EXPORT_SYMBOL(__ethtool_get_link_ksettings);
449 /* convert ethtool_link_usettings in user space to a kernel internal
450 * ethtool_link_ksettings. return 0 on success, errno on error.
452 static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to,
453 const void __user *from)
455 struct ethtool_link_usettings link_usettings;
457 if (copy_from_user(&link_usettings, from, sizeof(link_usettings)))
460 memcpy(&to->base, &link_usettings.base, sizeof(to->base));
461 bitmap_from_arr32(to->link_modes.supported,
462 link_usettings.link_modes.supported,
463 __ETHTOOL_LINK_MODE_MASK_NBITS);
464 bitmap_from_arr32(to->link_modes.advertising,
465 link_usettings.link_modes.advertising,
466 __ETHTOOL_LINK_MODE_MASK_NBITS);
467 bitmap_from_arr32(to->link_modes.lp_advertising,
468 link_usettings.link_modes.lp_advertising,
469 __ETHTOOL_LINK_MODE_MASK_NBITS);
474 /* Check if the user is trying to change anything besides speed/duplex */
475 bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd)
477 struct ethtool_link_settings base2 = {};
479 base2.speed = cmd->base.speed;
480 base2.port = PORT_OTHER;
481 base2.duplex = cmd->base.duplex;
482 base2.cmd = cmd->base.cmd;
483 base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords;
485 return !memcmp(&base2, &cmd->base, sizeof(base2)) &&
486 bitmap_empty(cmd->link_modes.supported,
487 __ETHTOOL_LINK_MODE_MASK_NBITS) &&
488 bitmap_empty(cmd->link_modes.lp_advertising,
489 __ETHTOOL_LINK_MODE_MASK_NBITS);
492 /* convert a kernel internal ethtool_link_ksettings to
493 * ethtool_link_usettings in user space. return 0 on success, errno on
497 store_link_ksettings_for_user(void __user *to,
498 const struct ethtool_link_ksettings *from)
500 struct ethtool_link_usettings link_usettings;
502 memcpy(&link_usettings, from, sizeof(link_usettings));
503 bitmap_to_arr32(link_usettings.link_modes.supported,
504 from->link_modes.supported,
505 __ETHTOOL_LINK_MODE_MASK_NBITS);
506 bitmap_to_arr32(link_usettings.link_modes.advertising,
507 from->link_modes.advertising,
508 __ETHTOOL_LINK_MODE_MASK_NBITS);
509 bitmap_to_arr32(link_usettings.link_modes.lp_advertising,
510 from->link_modes.lp_advertising,
511 __ETHTOOL_LINK_MODE_MASK_NBITS);
513 if (copy_to_user(to, &link_usettings, sizeof(link_usettings)))
519 /* Query device for its ethtool_link_settings. */
520 static int ethtool_get_link_ksettings(struct net_device *dev,
521 void __user *useraddr)
524 struct ethtool_link_ksettings link_ksettings;
527 if (!dev->ethtool_ops->get_link_ksettings)
530 /* handle bitmap nbits handshake */
531 if (copy_from_user(&link_ksettings.base, useraddr,
532 sizeof(link_ksettings.base)))
535 if (__ETHTOOL_LINK_MODE_MASK_NU32
536 != link_ksettings.base.link_mode_masks_nwords) {
537 /* wrong link mode nbits requested */
538 memset(&link_ksettings, 0, sizeof(link_ksettings));
539 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
540 /* send back number of words required as negative val */
541 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX,
542 "need too many bits for link modes!");
543 link_ksettings.base.link_mode_masks_nwords
544 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32);
546 /* copy the base fields back to user, not the link
549 if (copy_to_user(useraddr, &link_ksettings.base,
550 sizeof(link_ksettings.base)))
556 /* handshake successful: user/kernel agree on
557 * link_mode_masks_nwords
560 memset(&link_ksettings, 0, sizeof(link_ksettings));
561 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
565 /* make sure we tell the right values to user */
566 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
567 link_ksettings.base.link_mode_masks_nwords
568 = __ETHTOOL_LINK_MODE_MASK_NU32;
569 link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED;
570 link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED;
571 link_ksettings.base.rate_matching = RATE_MATCH_NONE;
573 return store_link_ksettings_for_user(useraddr, &link_ksettings);
576 /* Update device ethtool_link_settings. */
577 static int ethtool_set_link_ksettings(struct net_device *dev,
578 void __user *useraddr)
580 struct ethtool_link_ksettings link_ksettings = {};
585 if (!dev->ethtool_ops->set_link_ksettings)
588 /* make sure nbits field has expected value */
589 if (copy_from_user(&link_ksettings.base, useraddr,
590 sizeof(link_ksettings.base)))
593 if (__ETHTOOL_LINK_MODE_MASK_NU32
594 != link_ksettings.base.link_mode_masks_nwords)
597 /* copy the whole structure, now that we know it has expected
600 err = load_link_ksettings_from_user(&link_ksettings, useraddr);
604 /* re-check nwords field, just in case */
605 if (__ETHTOOL_LINK_MODE_MASK_NU32
606 != link_ksettings.base.link_mode_masks_nwords)
609 if (link_ksettings.base.master_slave_cfg ||
610 link_ksettings.base.master_slave_state)
613 err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
615 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL);
616 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL);
621 int ethtool_virtdev_set_link_ksettings(struct net_device *dev,
622 const struct ethtool_link_ksettings *cmd,
623 u32 *dev_speed, u8 *dev_duplex)
628 speed = cmd->base.speed;
629 duplex = cmd->base.duplex;
630 /* don't allow custom speed and duplex */
631 if (!ethtool_validate_speed(speed) ||
632 !ethtool_validate_duplex(duplex) ||
633 !ethtool_virtdev_validate_cmd(cmd))
636 *dev_duplex = duplex;
640 EXPORT_SYMBOL(ethtool_virtdev_set_link_ksettings);
642 /* Query device for its ethtool_cmd settings.
644 * Backward compatibility note: for compatibility with legacy ethtool, this is
645 * now implemented via get_link_ksettings. When driver reports higher link mode
646 * bits, a kernel warning is logged once (with name of 1st driver/device) to
647 * recommend user to upgrade ethtool, but the command is successful (only the
648 * lower link mode bits reported back to user). Deprecated fields from
649 * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero.
651 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
653 struct ethtool_link_ksettings link_ksettings;
654 struct ethtool_cmd cmd;
658 if (!dev->ethtool_ops->get_link_ksettings)
661 memset(&link_ksettings, 0, sizeof(link_ksettings));
662 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
665 convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings);
667 /* send a sensible cmd tag back to user */
668 cmd.cmd = ETHTOOL_GSET;
670 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
676 /* Update device link settings with given ethtool_cmd.
678 * Backward compatibility note: for compatibility with legacy ethtool, this is
679 * now always implemented via set_link_settings. When user's request updates
680 * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
681 * warning is logged once (with name of 1st driver/device) to recommend user to
682 * upgrade ethtool, and the request is rejected.
684 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
686 struct ethtool_link_ksettings link_ksettings;
687 struct ethtool_cmd cmd;
692 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
694 if (!dev->ethtool_ops->set_link_ksettings)
697 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd))
699 link_ksettings.base.link_mode_masks_nwords =
700 __ETHTOOL_LINK_MODE_MASK_NU32;
701 ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
703 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL);
704 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL);
710 ethtool_get_drvinfo(struct net_device *dev, struct ethtool_devlink_compat *rsp)
712 const struct ethtool_ops *ops = dev->ethtool_ops;
713 struct device *parent = dev->dev.parent;
715 rsp->info.cmd = ETHTOOL_GDRVINFO;
716 strscpy(rsp->info.version, UTS_RELEASE, sizeof(rsp->info.version));
717 if (ops->get_drvinfo) {
718 ops->get_drvinfo(dev, &rsp->info);
719 if (!rsp->info.bus_info[0] && parent)
720 strscpy(rsp->info.bus_info, dev_name(parent),
721 sizeof(rsp->info.bus_info));
722 if (!rsp->info.driver[0] && parent && parent->driver)
723 strscpy(rsp->info.driver, parent->driver->name,
724 sizeof(rsp->info.driver));
725 } else if (parent && parent->driver) {
726 strscpy(rsp->info.bus_info, dev_name(parent),
727 sizeof(rsp->info.bus_info));
728 strscpy(rsp->info.driver, parent->driver->name,
729 sizeof(rsp->info.driver));
730 } else if (dev->rtnl_link_ops) {
731 strscpy(rsp->info.driver, dev->rtnl_link_ops->kind,
732 sizeof(rsp->info.driver));
738 * this method of obtaining string set info is deprecated;
739 * Use ETHTOOL_GSSET_INFO instead.
741 if (ops->get_sset_count) {
744 rc = ops->get_sset_count(dev, ETH_SS_TEST);
746 rsp->info.testinfo_len = rc;
747 rc = ops->get_sset_count(dev, ETH_SS_STATS);
749 rsp->info.n_stats = rc;
750 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
752 rsp->info.n_priv_flags = rc;
754 if (ops->get_regs_len) {
755 int ret = ops->get_regs_len(dev);
758 rsp->info.regdump_len = ret;
761 if (ops->get_eeprom_len)
762 rsp->info.eedump_len = ops->get_eeprom_len(dev);
764 if (!rsp->info.fw_version[0])
765 rsp->devlink = netdev_to_devlink_get(dev);
770 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
771 void __user *useraddr)
773 struct ethtool_sset_info info;
775 int i, idx = 0, n_bits = 0, ret, rc;
776 u32 *info_buf = NULL;
778 if (copy_from_user(&info, useraddr, sizeof(info)))
781 /* store copy of mask, because we zero struct later on */
782 sset_mask = info.sset_mask;
786 /* calculate size of return buffer */
787 n_bits = hweight64(sset_mask);
789 memset(&info, 0, sizeof(info));
790 info.cmd = ETHTOOL_GSSET_INFO;
792 info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER);
797 * fill return buffer based on input bitmask and successful
798 * get_sset_count return
800 for (i = 0; i < 64; i++) {
801 if (!(sset_mask & (1ULL << i)))
804 rc = __ethtool_get_sset_count(dev, i);
806 info.sset_mask |= (1ULL << i);
807 info_buf[idx++] = rc;
812 if (copy_to_user(useraddr, &info, sizeof(info)))
815 useraddr += offsetof(struct ethtool_sset_info, data);
816 if (copy_to_user(useraddr, info_buf, array_size(idx, sizeof(u32))))
826 static noinline_for_stack int
827 ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc,
828 const struct compat_ethtool_rxnfc __user *useraddr,
831 struct compat_ethtool_rxnfc crxnfc = {};
833 /* We expect there to be holes between fs.m_ext and
834 * fs.ring_cookie and at the end of fs, but nowhere else.
835 * On non-x86, no conversion should be needed.
837 BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) &&
838 sizeof(struct compat_ethtool_rxnfc) !=
839 sizeof(struct ethtool_rxnfc));
840 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) +
841 sizeof(useraddr->fs.m_ext) !=
842 offsetof(struct ethtool_rxnfc, fs.m_ext) +
843 sizeof(rxnfc->fs.m_ext));
844 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) -
845 offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) !=
846 offsetof(struct ethtool_rxnfc, fs.location) -
847 offsetof(struct ethtool_rxnfc, fs.ring_cookie));
849 if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc))))
852 *rxnfc = (struct ethtool_rxnfc) {
854 .flow_type = crxnfc.flow_type,
857 .flow_type = crxnfc.fs.flow_type,
858 .h_u = crxnfc.fs.h_u,
859 .h_ext = crxnfc.fs.h_ext,
860 .m_u = crxnfc.fs.m_u,
861 .m_ext = crxnfc.fs.m_ext,
862 .ring_cookie = crxnfc.fs.ring_cookie,
863 .location = crxnfc.fs.location,
865 .rule_cnt = crxnfc.rule_cnt,
871 static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc,
872 const void __user *useraddr,
875 if (compat_need_64bit_alignment_fixup())
876 return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size);
878 if (copy_from_user(rxnfc, useraddr, size))
884 static int ethtool_rxnfc_copy_to_compat(void __user *useraddr,
885 const struct ethtool_rxnfc *rxnfc,
886 size_t size, const u32 *rule_buf)
888 struct compat_ethtool_rxnfc crxnfc;
890 memset(&crxnfc, 0, sizeof(crxnfc));
891 crxnfc = (struct compat_ethtool_rxnfc) {
893 .flow_type = rxnfc->flow_type,
896 .flow_type = rxnfc->fs.flow_type,
897 .h_u = rxnfc->fs.h_u,
898 .h_ext = rxnfc->fs.h_ext,
899 .m_u = rxnfc->fs.m_u,
900 .m_ext = rxnfc->fs.m_ext,
901 .ring_cookie = rxnfc->fs.ring_cookie,
902 .location = rxnfc->fs.location,
904 .rule_cnt = rxnfc->rule_cnt,
907 if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc))))
913 static int ethtool_rxnfc_copy_struct(u32 cmd, struct ethtool_rxnfc *info,
914 size_t *info_size, void __user *useraddr)
916 /* struct ethtool_rxnfc was originally defined for
917 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
918 * members. User-space might still be using that
921 if (cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH)
922 *info_size = (offsetof(struct ethtool_rxnfc, data) +
925 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size))
928 if ((cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) && info->flow_type & FLOW_RSS) {
929 *info_size = sizeof(*info);
930 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size))
932 /* Since malicious users may modify the original data,
933 * we need to check whether FLOW_RSS is still requested.
935 if (!(info->flow_type & FLOW_RSS))
939 if (info->cmd != cmd)
945 static int ethtool_rxnfc_copy_to_user(void __user *useraddr,
946 const struct ethtool_rxnfc *rxnfc,
947 size_t size, const u32 *rule_buf)
951 if (compat_need_64bit_alignment_fixup()) {
952 ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size,
954 useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs);
956 ret = copy_to_user(useraddr, rxnfc, size);
957 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
964 if (copy_to_user(useraddr, rule_buf,
965 rxnfc->rule_cnt * sizeof(u32)))
972 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
973 u32 cmd, void __user *useraddr)
975 const struct ethtool_ops *ops = dev->ethtool_ops;
976 struct ethtool_rxnfc info;
977 size_t info_size = sizeof(info);
983 rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr);
988 struct ethtool_rxfh_param rxfh = {};
990 rc = ops->get_rxfh(dev, &rxfh);
994 /* Sanity check: if symmetric-xor is set, then:
995 * 1 - no other fields besides IP src/dst and/or L4 src/dst
996 * 2 - If src is set, dst must also be set
998 if ((rxfh.input_xfrm & RXH_XFRM_SYM_XOR) &&
999 ((info.data & ~(RXH_IP_SRC | RXH_IP_DST |
1000 RXH_L4_B_0_1 | RXH_L4_B_2_3)) ||
1001 (!!(info.data & RXH_IP_SRC) ^ !!(info.data & RXH_IP_DST)) ||
1002 (!!(info.data & RXH_L4_B_0_1) ^ !!(info.data & RXH_L4_B_2_3))))
1006 rc = ops->set_rxnfc(dev, &info);
1010 if (cmd == ETHTOOL_SRXCLSRLINS &&
1011 ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL))
1017 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
1018 u32 cmd, void __user *useraddr)
1020 struct ethtool_rxnfc info;
1021 size_t info_size = sizeof(info);
1022 const struct ethtool_ops *ops = dev->ethtool_ops;
1024 void *rule_buf = NULL;
1026 if (!ops->get_rxnfc)
1029 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr);
1033 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
1034 if (info.rule_cnt > 0) {
1035 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
1036 rule_buf = kcalloc(info.rule_cnt, sizeof(u32),
1043 ret = ops->get_rxnfc(dev, &info, rule_buf);
1047 ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf);
1054 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr,
1055 struct ethtool_rxnfc *rx_rings,
1060 if (copy_from_user(indir, useraddr, array_size(size, sizeof(indir[0]))))
1063 /* Validate ring indices */
1064 for (i = 0; i < size; i++)
1065 if (indir[i] >= rx_rings->data)
1071 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly;
1073 void netdev_rss_key_fill(void *buffer, size_t len)
1075 BUG_ON(len > sizeof(netdev_rss_key));
1076 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key));
1077 memcpy(buffer, netdev_rss_key, len);
1079 EXPORT_SYMBOL(netdev_rss_key_fill);
1081 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
1082 void __user *useraddr)
1084 struct ethtool_rxfh_param rxfh = {};
1088 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1089 !dev->ethtool_ops->get_rxfh)
1091 rxfh.indir_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1092 if (rxfh.indir_size == 0)
1095 if (copy_from_user(&user_size,
1096 useraddr + offsetof(struct ethtool_rxfh_indir, size),
1100 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
1101 &rxfh.indir_size, sizeof(rxfh.indir_size)))
1104 /* If the user buffer size is 0, this is just a query for the
1105 * device table size. Otherwise, if it's smaller than the
1106 * device table size it's an error.
1108 if (user_size < rxfh.indir_size)
1109 return user_size == 0 ? 0 : -EINVAL;
1111 rxfh.indir = kcalloc(rxfh.indir_size, sizeof(rxfh.indir[0]), GFP_USER);
1115 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh);
1118 if (copy_to_user(useraddr +
1119 offsetof(struct ethtool_rxfh_indir, ring_index[0]),
1120 rxfh.indir, rxfh.indir_size * sizeof(*rxfh.indir)))
1128 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
1129 void __user *useraddr)
1131 const struct ethtool_ops *ops = dev->ethtool_ops;
1132 struct ethtool_rxfh_param rxfh_dev = {};
1133 struct netlink_ext_ack *extack = NULL;
1134 struct ethtool_rxnfc rx_rings;
1137 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]);
1139 if (!ops->get_rxfh_indir_size || !ops->set_rxfh ||
1143 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev);
1144 if (rxfh_dev.indir_size == 0)
1147 if (copy_from_user(&user_size,
1148 useraddr + offsetof(struct ethtool_rxfh_indir, size),
1152 if (user_size != 0 && user_size != rxfh_dev.indir_size)
1155 rxfh_dev.indir = kcalloc(rxfh_dev.indir_size,
1156 sizeof(rxfh_dev.indir[0]), GFP_USER);
1157 if (!rxfh_dev.indir)
1160 rx_rings.cmd = ETHTOOL_GRXRINGS;
1161 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1165 if (user_size == 0) {
1166 u32 *indir = rxfh_dev.indir;
1168 for (i = 0; i < rxfh_dev.indir_size; i++)
1169 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1171 ret = ethtool_copy_validate_indir(rxfh_dev.indir,
1172 useraddr + ringidx_offset,
1174 rxfh_dev.indir_size);
1179 rxfh_dev.hfunc = ETH_RSS_HASH_NO_CHANGE;
1180 ret = ops->set_rxfh(dev, &rxfh_dev, extack);
1184 /* indicate whether rxfh was set to default */
1186 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1188 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1191 kfree(rxfh_dev.indir);
1195 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
1196 void __user *useraddr)
1198 const struct ethtool_ops *ops = dev->ethtool_ops;
1199 struct ethtool_rxfh_param rxfh_dev = {};
1200 u32 user_indir_size, user_key_size;
1201 struct ethtool_rxfh rxfh;
1210 if (ops->get_rxfh_indir_size)
1211 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev);
1212 if (ops->get_rxfh_key_size)
1213 rxfh_dev.key_size = ops->get_rxfh_key_size(dev);
1215 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
1217 user_indir_size = rxfh.indir_size;
1218 user_key_size = rxfh.key_size;
1220 /* Check that reserved fields are 0 for now */
1221 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32)
1223 /* Most drivers don't handle rss_context, check it's 0 as well */
1224 if (rxfh.rss_context && !ops->cap_rss_ctx_supported)
1227 rxfh.indir_size = rxfh_dev.indir_size;
1228 rxfh.key_size = rxfh_dev.key_size;
1229 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh)))
1232 if ((user_indir_size && user_indir_size != rxfh_dev.indir_size) ||
1233 (user_key_size && user_key_size != rxfh_dev.key_size))
1236 indir_bytes = user_indir_size * sizeof(rxfh_dev.indir[0]);
1237 total_size = indir_bytes + user_key_size;
1238 rss_config = kzalloc(total_size, GFP_USER);
1242 if (user_indir_size)
1243 rxfh_dev.indir = (u32 *)rss_config;
1246 rxfh_dev.key = rss_config + indir_bytes;
1248 rxfh_dev.rss_context = rxfh.rss_context;
1250 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh_dev);
1254 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc),
1255 &rxfh_dev.hfunc, sizeof(rxfh.hfunc))) {
1257 } else if (copy_to_user(useraddr +
1258 offsetof(struct ethtool_rxfh, input_xfrm),
1259 &rxfh_dev.input_xfrm,
1260 sizeof(rxfh.input_xfrm))) {
1262 } else if (copy_to_user(useraddr +
1263 offsetof(struct ethtool_rxfh, rss_config[0]),
1264 rss_config, total_size)) {
1273 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
1274 void __user *useraddr)
1276 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]);
1277 const struct ethtool_ops *ops = dev->ethtool_ops;
1278 u32 dev_indir_size = 0, dev_key_size = 0, i;
1279 struct ethtool_rxfh_param rxfh_dev = {};
1280 struct netlink_ext_ack *extack = NULL;
1281 struct ethtool_rxnfc rx_rings;
1282 struct ethtool_rxfh rxfh;
1283 u32 indir_bytes = 0;
1287 if (!ops->get_rxnfc || !ops->set_rxfh)
1290 if (ops->get_rxfh_indir_size)
1291 dev_indir_size = ops->get_rxfh_indir_size(dev);
1292 if (ops->get_rxfh_key_size)
1293 dev_key_size = ops->get_rxfh_key_size(dev);
1295 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
1298 /* Check that reserved fields are 0 for now */
1299 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32)
1301 /* Most drivers don't handle rss_context, check it's 0 as well */
1302 if (rxfh.rss_context && !ops->cap_rss_ctx_supported)
1304 /* Check input data transformation capabilities */
1305 if (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_SYM_XOR &&
1306 rxfh.input_xfrm != RXH_XFRM_NO_CHANGE)
1308 if ((rxfh.input_xfrm & RXH_XFRM_SYM_XOR) &&
1309 !ops->cap_rss_sym_xor_supported)
1312 /* If either indir, hash key or function is valid, proceed further.
1313 * Must request at least one change: indir size, hash key, function
1314 * or input transformation.
1316 if ((rxfh.indir_size &&
1317 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE &&
1318 rxfh.indir_size != dev_indir_size) ||
1319 (rxfh.key_size && (rxfh.key_size != dev_key_size)) ||
1320 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE &&
1321 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE &&
1322 rxfh.input_xfrm == RXH_XFRM_NO_CHANGE))
1325 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1326 indir_bytes = dev_indir_size * sizeof(rxfh_dev.indir[0]);
1328 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER);
1332 rx_rings.cmd = ETHTOOL_GRXRINGS;
1333 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1337 /* rxfh.indir_size == 0 means reset the indir table to default (master
1338 * context) or delete the context (other RSS contexts).
1339 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
1341 if (rxfh.indir_size &&
1342 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) {
1343 rxfh_dev.indir = (u32 *)rss_config;
1344 rxfh_dev.indir_size = dev_indir_size;
1345 ret = ethtool_copy_validate_indir(rxfh_dev.indir,
1346 useraddr + rss_cfg_offset,
1351 } else if (rxfh.indir_size == 0) {
1352 if (rxfh.rss_context == 0) {
1355 rxfh_dev.indir = (u32 *)rss_config;
1356 rxfh_dev.indir_size = dev_indir_size;
1357 indir = rxfh_dev.indir;
1358 for (i = 0; i < dev_indir_size; i++)
1359 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1361 rxfh_dev.rss_delete = true;
1365 if (rxfh.key_size) {
1366 rxfh_dev.key_size = dev_key_size;
1367 rxfh_dev.key = rss_config + indir_bytes;
1368 if (copy_from_user(rxfh_dev.key,
1369 useraddr + rss_cfg_offset + indir_bytes,
1376 rxfh_dev.hfunc = rxfh.hfunc;
1377 rxfh_dev.rss_context = rxfh.rss_context;
1378 rxfh_dev.input_xfrm = rxfh.input_xfrm;
1380 ret = ops->set_rxfh(dev, &rxfh_dev, extack);
1384 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context),
1385 &rxfh_dev.rss_context, sizeof(rxfh_dev.rss_context)))
1388 if (!rxfh_dev.rss_context) {
1389 /* indicate whether rxfh was set to default */
1390 if (rxfh.indir_size == 0)
1391 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1392 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1393 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1401 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
1403 struct ethtool_regs regs;
1404 const struct ethtool_ops *ops = dev->ethtool_ops;
1408 if (!ops->get_regs || !ops->get_regs_len)
1411 if (copy_from_user(®s, useraddr, sizeof(regs)))
1414 reglen = ops->get_regs_len(dev);
1418 if (regs.len > reglen)
1421 regbuf = vzalloc(reglen);
1425 if (regs.len < reglen)
1428 ops->get_regs(dev, ®s, regbuf);
1431 if (copy_to_user(useraddr, ®s, sizeof(regs)))
1433 useraddr += offsetof(struct ethtool_regs, data);
1434 if (copy_to_user(useraddr, regbuf, reglen))
1443 static int ethtool_reset(struct net_device *dev, char __user *useraddr)
1445 struct ethtool_value reset;
1448 if (!dev->ethtool_ops->reset)
1451 if (copy_from_user(&reset, useraddr, sizeof(reset)))
1454 ret = dev->ethtool_ops->reset(dev, &reset.data);
1458 if (copy_to_user(useraddr, &reset, sizeof(reset)))
1463 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
1465 struct ethtool_wolinfo wol;
1467 if (!dev->ethtool_ops->get_wol)
1470 memset(&wol, 0, sizeof(struct ethtool_wolinfo));
1471 wol.cmd = ETHTOOL_GWOL;
1472 dev->ethtool_ops->get_wol(dev, &wol);
1474 if (copy_to_user(useraddr, &wol, sizeof(wol)))
1479 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
1481 struct ethtool_wolinfo wol, cur_wol;
1484 if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol)
1487 memset(&cur_wol, 0, sizeof(struct ethtool_wolinfo));
1488 cur_wol.cmd = ETHTOOL_GWOL;
1489 dev->ethtool_ops->get_wol(dev, &cur_wol);
1491 if (copy_from_user(&wol, useraddr, sizeof(wol)))
1494 if (wol.wolopts & ~cur_wol.supported)
1497 if (wol.wolopts == cur_wol.wolopts &&
1498 !memcmp(wol.sopass, cur_wol.sopass, sizeof(wol.sopass)))
1501 ret = dev->ethtool_ops->set_wol(dev, &wol);
1505 dev->wol_enabled = !!wol.wolopts;
1506 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL);
1511 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
1513 struct ethtool_eee edata;
1516 if (!dev->ethtool_ops->get_eee)
1519 memset(&edata, 0, sizeof(struct ethtool_eee));
1520 edata.cmd = ETHTOOL_GEEE;
1521 rc = dev->ethtool_ops->get_eee(dev, &edata);
1526 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1532 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
1534 struct ethtool_eee edata;
1537 if (!dev->ethtool_ops->set_eee)
1540 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1543 ret = dev->ethtool_ops->set_eee(dev, &edata);
1545 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL);
1549 static int ethtool_nway_reset(struct net_device *dev)
1551 if (!dev->ethtool_ops->nway_reset)
1554 return dev->ethtool_ops->nway_reset(dev);
1557 static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
1559 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
1560 int link = __ethtool_get_link(dev);
1566 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1571 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
1572 int (*getter)(struct net_device *,
1573 struct ethtool_eeprom *, u8 *),
1576 struct ethtool_eeprom eeprom;
1577 void __user *userbuf = useraddr + sizeof(eeprom);
1578 u32 bytes_remaining;
1582 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1585 /* Check for wrap and zero */
1586 if (eeprom.offset + eeprom.len <= eeprom.offset)
1589 /* Check for exceeding total eeprom len */
1590 if (eeprom.offset + eeprom.len > total_len)
1593 data = kzalloc(PAGE_SIZE, GFP_USER);
1597 bytes_remaining = eeprom.len;
1598 while (bytes_remaining > 0) {
1599 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1601 ret = getter(dev, &eeprom, data);
1608 if (copy_to_user(userbuf, data, eeprom.len)) {
1612 userbuf += eeprom.len;
1613 eeprom.offset += eeprom.len;
1614 bytes_remaining -= eeprom.len;
1617 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
1618 eeprom.offset -= eeprom.len;
1619 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
1626 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
1628 const struct ethtool_ops *ops = dev->ethtool_ops;
1630 if (!ops->get_eeprom || !ops->get_eeprom_len ||
1631 !ops->get_eeprom_len(dev))
1634 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
1635 ops->get_eeprom_len(dev));
1638 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
1640 struct ethtool_eeprom eeprom;
1641 const struct ethtool_ops *ops = dev->ethtool_ops;
1642 void __user *userbuf = useraddr + sizeof(eeprom);
1643 u32 bytes_remaining;
1647 if (!ops->set_eeprom || !ops->get_eeprom_len ||
1648 !ops->get_eeprom_len(dev))
1651 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1654 /* Check for wrap and zero */
1655 if (eeprom.offset + eeprom.len <= eeprom.offset)
1658 /* Check for exceeding total eeprom len */
1659 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1662 data = kzalloc(PAGE_SIZE, GFP_USER);
1666 bytes_remaining = eeprom.len;
1667 while (bytes_remaining > 0) {
1668 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1670 if (copy_from_user(data, userbuf, eeprom.len)) {
1674 ret = ops->set_eeprom(dev, &eeprom, data);
1677 userbuf += eeprom.len;
1678 eeprom.offset += eeprom.len;
1679 bytes_remaining -= eeprom.len;
1686 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1687 void __user *useraddr)
1689 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1690 struct kernel_ethtool_coalesce kernel_coalesce = {};
1693 if (!dev->ethtool_ops->get_coalesce)
1696 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce,
1701 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1707 ethtool_set_coalesce_supported(struct net_device *dev,
1708 struct ethtool_coalesce *coalesce)
1710 u32 supported_params = dev->ethtool_ops->supported_coalesce_params;
1711 u32 nonzero_params = 0;
1713 if (coalesce->rx_coalesce_usecs)
1714 nonzero_params |= ETHTOOL_COALESCE_RX_USECS;
1715 if (coalesce->rx_max_coalesced_frames)
1716 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES;
1717 if (coalesce->rx_coalesce_usecs_irq)
1718 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ;
1719 if (coalesce->rx_max_coalesced_frames_irq)
1720 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ;
1721 if (coalesce->tx_coalesce_usecs)
1722 nonzero_params |= ETHTOOL_COALESCE_TX_USECS;
1723 if (coalesce->tx_max_coalesced_frames)
1724 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES;
1725 if (coalesce->tx_coalesce_usecs_irq)
1726 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ;
1727 if (coalesce->tx_max_coalesced_frames_irq)
1728 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ;
1729 if (coalesce->stats_block_coalesce_usecs)
1730 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS;
1731 if (coalesce->use_adaptive_rx_coalesce)
1732 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX;
1733 if (coalesce->use_adaptive_tx_coalesce)
1734 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX;
1735 if (coalesce->pkt_rate_low)
1736 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW;
1737 if (coalesce->rx_coalesce_usecs_low)
1738 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW;
1739 if (coalesce->rx_max_coalesced_frames_low)
1740 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW;
1741 if (coalesce->tx_coalesce_usecs_low)
1742 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW;
1743 if (coalesce->tx_max_coalesced_frames_low)
1744 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW;
1745 if (coalesce->pkt_rate_high)
1746 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH;
1747 if (coalesce->rx_coalesce_usecs_high)
1748 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH;
1749 if (coalesce->rx_max_coalesced_frames_high)
1750 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH;
1751 if (coalesce->tx_coalesce_usecs_high)
1752 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH;
1753 if (coalesce->tx_max_coalesced_frames_high)
1754 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH;
1755 if (coalesce->rate_sample_interval)
1756 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL;
1758 return (supported_params & nonzero_params) == nonzero_params;
1761 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1762 void __user *useraddr)
1764 struct kernel_ethtool_coalesce kernel_coalesce = {};
1765 struct ethtool_coalesce coalesce;
1768 if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce)
1771 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce,
1776 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1779 if (!ethtool_set_coalesce_supported(dev, &coalesce))
1782 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce,
1785 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL);
1789 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1791 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1792 struct kernel_ethtool_ringparam kernel_ringparam = {};
1794 if (!dev->ethtool_ops->get_ringparam)
1797 dev->ethtool_ops->get_ringparam(dev, &ringparam,
1798 &kernel_ringparam, NULL);
1800 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1805 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1807 struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM };
1808 struct kernel_ethtool_ringparam kernel_ringparam;
1811 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam)
1814 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1817 dev->ethtool_ops->get_ringparam(dev, &max, &kernel_ringparam, NULL);
1819 /* ensure new ring parameters are within the maximums */
1820 if (ringparam.rx_pending > max.rx_max_pending ||
1821 ringparam.rx_mini_pending > max.rx_mini_max_pending ||
1822 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending ||
1823 ringparam.tx_pending > max.tx_max_pending)
1826 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam,
1827 &kernel_ringparam, NULL);
1829 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL);
1833 static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
1834 void __user *useraddr)
1836 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
1838 if (!dev->ethtool_ops->get_channels)
1841 dev->ethtool_ops->get_channels(dev, &channels);
1843 if (copy_to_user(useraddr, &channels, sizeof(channels)))
1848 static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
1849 void __user *useraddr)
1851 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS };
1852 u16 from_channel, to_channel;
1853 u64 max_rxnfc_in_use;
1854 u32 max_rxfh_in_use;
1858 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels)
1861 if (copy_from_user(&channels, useraddr, sizeof(channels)))
1864 dev->ethtool_ops->get_channels(dev, &curr);
1866 if (channels.rx_count == curr.rx_count &&
1867 channels.tx_count == curr.tx_count &&
1868 channels.combined_count == curr.combined_count &&
1869 channels.other_count == curr.other_count)
1872 /* ensure new counts are within the maximums */
1873 if (channels.rx_count > curr.max_rx ||
1874 channels.tx_count > curr.max_tx ||
1875 channels.combined_count > curr.max_combined ||
1876 channels.other_count > curr.max_other)
1879 /* ensure there is at least one RX and one TX channel */
1880 if (!channels.combined_count &&
1881 (!channels.rx_count || !channels.tx_count))
1884 /* ensure the new Rx count fits within the configured Rx flow
1885 * indirection table/rxnfc settings */
1886 if (ethtool_get_max_rxnfc_channel(dev, &max_rxnfc_in_use))
1887 max_rxnfc_in_use = 0;
1888 if (!netif_is_rxfh_configured(dev) ||
1889 ethtool_get_max_rxfh_channel(dev, &max_rxfh_in_use))
1890 max_rxfh_in_use = 0;
1891 if (channels.combined_count + channels.rx_count <=
1892 max_t(u64, max_rxnfc_in_use, max_rxfh_in_use))
1895 /* Disabling channels, query zero-copy AF_XDP sockets */
1896 from_channel = channels.combined_count +
1897 min(channels.rx_count, channels.tx_count);
1898 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count);
1899 for (i = from_channel; i < to_channel; i++)
1900 if (xsk_get_pool_from_qid(dev, i))
1903 ret = dev->ethtool_ops->set_channels(dev, &channels);
1905 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL);
1909 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1911 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM };
1913 if (!dev->ethtool_ops->get_pauseparam)
1916 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1918 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1923 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1925 struct ethtool_pauseparam pauseparam;
1928 if (!dev->ethtool_ops->set_pauseparam)
1931 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1934 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1936 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL);
1940 static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1942 struct ethtool_test test;
1943 const struct ethtool_ops *ops = dev->ethtool_ops;
1947 if (!ops->self_test || !ops->get_sset_count)
1950 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
1953 WARN_ON(test_len == 0);
1955 if (copy_from_user(&test, useraddr, sizeof(test)))
1958 test.len = test_len;
1959 data = kcalloc(test_len, sizeof(u64), GFP_USER);
1963 netif_testing_on(dev);
1964 ops->self_test(dev, &test, data);
1965 netif_testing_off(dev);
1968 if (copy_to_user(useraddr, &test, sizeof(test)))
1970 useraddr += sizeof(test);
1971 if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64))))
1980 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1982 struct ethtool_gstrings gstrings;
1986 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1989 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
1992 if (ret > S32_MAX / ETH_GSTRING_LEN)
1999 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN));
2003 __ethtool_get_strings(dev, gstrings.string_set, data);
2009 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
2011 useraddr += sizeof(gstrings);
2013 copy_to_user(useraddr, data,
2014 array_size(gstrings.len, ETH_GSTRING_LEN)))
2023 __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...)
2027 va_start(args, fmt);
2028 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args);
2031 *data += ETH_GSTRING_LEN;
2033 EXPORT_SYMBOL(ethtool_sprintf);
2035 void ethtool_puts(u8 **data, const char *str)
2037 strscpy(*data, str, ETH_GSTRING_LEN);
2038 *data += ETH_GSTRING_LEN;
2040 EXPORT_SYMBOL(ethtool_puts);
2042 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
2044 struct ethtool_value id;
2046 const struct ethtool_ops *ops = dev->ethtool_ops;
2047 netdevice_tracker dev_tracker;
2050 if (!ops->set_phys_id)
2056 if (copy_from_user(&id, useraddr, sizeof(id)))
2059 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
2063 /* Drop the RTNL lock while waiting, but prevent reentry or
2064 * removal of the device.
2067 netdev_hold(dev, &dev_tracker, GFP_KERNEL);
2071 /* Driver will handle this itself */
2072 schedule_timeout_interruptible(
2073 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
2075 /* Driver expects to be called at twice the frequency in rc */
2076 int n = rc * 2, interval = HZ / n;
2077 u64 count = mul_u32_u32(n, id.data);
2082 rc = ops->set_phys_id(dev,
2083 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
2087 schedule_timeout_interruptible(interval);
2088 } while (!signal_pending(current) && (!id.data || i < count));
2092 netdev_put(dev, &dev_tracker);
2095 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
2099 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
2101 struct ethtool_stats stats;
2102 const struct ethtool_ops *ops = dev->ethtool_ops;
2106 if (!ops->get_ethtool_stats || !ops->get_sset_count)
2109 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
2112 if (n_stats > S32_MAX / sizeof(u64))
2114 WARN_ON_ONCE(!n_stats);
2115 if (copy_from_user(&stats, useraddr, sizeof(stats)))
2118 stats.n_stats = n_stats;
2121 data = vzalloc(array_size(n_stats, sizeof(u64)));
2124 ops->get_ethtool_stats(dev, &stats, data);
2130 if (copy_to_user(useraddr, &stats, sizeof(stats)))
2132 useraddr += sizeof(stats);
2133 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64))))
2142 static int ethtool_vzalloc_stats_array(int n_stats, u64 **data)
2146 if (n_stats > S32_MAX / sizeof(u64))
2148 if (WARN_ON_ONCE(!n_stats))
2151 *data = vzalloc(array_size(n_stats, sizeof(u64)));
2158 static int ethtool_get_phy_stats_phydev(struct phy_device *phydev,
2159 struct ethtool_stats *stats,
2162 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops;
2165 if (!phy_ops || !phy_ops->get_sset_count || !phy_ops->get_stats)
2168 n_stats = phy_ops->get_sset_count(phydev);
2170 ret = ethtool_vzalloc_stats_array(n_stats, data);
2174 stats->n_stats = n_stats;
2175 return phy_ops->get_stats(phydev, stats, *data);
2178 static int ethtool_get_phy_stats_ethtool(struct net_device *dev,
2179 struct ethtool_stats *stats,
2182 const struct ethtool_ops *ops = dev->ethtool_ops;
2185 if (!ops || !ops->get_sset_count || ops->get_ethtool_phy_stats)
2188 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS);
2190 ret = ethtool_vzalloc_stats_array(n_stats, data);
2194 stats->n_stats = n_stats;
2195 ops->get_ethtool_phy_stats(dev, stats, *data);
2200 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
2202 struct phy_device *phydev = dev->phydev;
2203 struct ethtool_stats stats;
2205 int ret = -EOPNOTSUPP;
2207 if (copy_from_user(&stats, useraddr, sizeof(stats)))
2211 ret = ethtool_get_phy_stats_phydev(phydev, &stats, &data);
2213 if (ret == -EOPNOTSUPP)
2214 ret = ethtool_get_phy_stats_ethtool(dev, &stats, &data);
2219 if (copy_to_user(useraddr, &stats, sizeof(stats))) {
2224 useraddr += sizeof(stats);
2225 if (copy_to_user(useraddr, data, array_size(stats.n_stats, sizeof(u64))))
2233 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
2235 struct ethtool_perm_addr epaddr;
2237 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
2240 if (epaddr.size < dev->addr_len)
2242 epaddr.size = dev->addr_len;
2244 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
2246 useraddr += sizeof(epaddr);
2247 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
2252 static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
2253 u32 cmd, u32 (*actor)(struct net_device *))
2255 struct ethtool_value edata = { .cmd = cmd };
2260 edata.data = actor(dev);
2262 if (copy_to_user(useraddr, &edata, sizeof(edata)))
2267 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
2268 void (*actor)(struct net_device *, u32))
2270 struct ethtool_value edata;
2275 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2278 actor(dev, edata.data);
2282 static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
2283 int (*actor)(struct net_device *, u32))
2285 struct ethtool_value edata;
2290 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2293 return actor(dev, edata.data);
2297 ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req)
2299 if (!dev->ethtool_ops->flash_device) {
2300 req->devlink = netdev_to_devlink_get(dev);
2304 return dev->ethtool_ops->flash_device(dev, &req->efl);
2307 static int ethtool_set_dump(struct net_device *dev,
2308 void __user *useraddr)
2310 struct ethtool_dump dump;
2312 if (!dev->ethtool_ops->set_dump)
2315 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2318 return dev->ethtool_ops->set_dump(dev, &dump);
2321 static int ethtool_get_dump_flag(struct net_device *dev,
2322 void __user *useraddr)
2325 struct ethtool_dump dump;
2326 const struct ethtool_ops *ops = dev->ethtool_ops;
2328 if (!ops->get_dump_flag)
2331 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2334 ret = ops->get_dump_flag(dev, &dump);
2338 if (copy_to_user(useraddr, &dump, sizeof(dump)))
2343 static int ethtool_get_dump_data(struct net_device *dev,
2344 void __user *useraddr)
2348 struct ethtool_dump dump, tmp;
2349 const struct ethtool_ops *ops = dev->ethtool_ops;
2352 if (!ops->get_dump_data || !ops->get_dump_flag)
2355 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2358 memset(&tmp, 0, sizeof(tmp));
2359 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
2360 ret = ops->get_dump_flag(dev, &tmp);
2364 len = min(tmp.len, dump.len);
2368 /* Don't ever let the driver think there's more space available
2369 * than it requested with .get_dump_flag().
2373 /* Always allocate enough space to hold the whole thing so that the
2374 * driver does not need to check the length and bother with partial
2377 data = vzalloc(tmp.len);
2380 ret = ops->get_dump_data(dev, &dump, data);
2384 /* There are two sane possibilities:
2385 * 1. The driver's .get_dump_data() does not touch dump.len.
2386 * 2. Or it may set dump.len to how much it really writes, which
2387 * should be tmp.len (or len if it can do a partial dump).
2388 * In any case respond to userspace with the actual length of data
2391 WARN_ON(dump.len != len && dump.len != tmp.len);
2394 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
2398 useraddr += offsetof(struct ethtool_dump, data);
2399 if (copy_to_user(useraddr, data, len))
2406 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
2408 struct ethtool_ts_info info;
2411 err = __ethtool_get_ts_info(dev, &info);
2415 if (copy_to_user(useraddr, &info, sizeof(info)))
2421 int ethtool_get_module_info_call(struct net_device *dev,
2422 struct ethtool_modinfo *modinfo)
2424 const struct ethtool_ops *ops = dev->ethtool_ops;
2425 struct phy_device *phydev = dev->phydev;
2428 return sfp_get_module_info(dev->sfp_bus, modinfo);
2430 if (phydev && phydev->drv && phydev->drv->module_info)
2431 return phydev->drv->module_info(phydev, modinfo);
2433 if (ops->get_module_info)
2434 return ops->get_module_info(dev, modinfo);
2439 static int ethtool_get_module_info(struct net_device *dev,
2440 void __user *useraddr)
2443 struct ethtool_modinfo modinfo;
2445 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
2448 ret = ethtool_get_module_info_call(dev, &modinfo);
2452 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
2458 int ethtool_get_module_eeprom_call(struct net_device *dev,
2459 struct ethtool_eeprom *ee, u8 *data)
2461 const struct ethtool_ops *ops = dev->ethtool_ops;
2462 struct phy_device *phydev = dev->phydev;
2465 return sfp_get_module_eeprom(dev->sfp_bus, ee, data);
2467 if (phydev && phydev->drv && phydev->drv->module_eeprom)
2468 return phydev->drv->module_eeprom(phydev, ee, data);
2470 if (ops->get_module_eeprom)
2471 return ops->get_module_eeprom(dev, ee, data);
2476 static int ethtool_get_module_eeprom(struct net_device *dev,
2477 void __user *useraddr)
2480 struct ethtool_modinfo modinfo;
2482 ret = ethtool_get_module_info_call(dev, &modinfo);
2486 return ethtool_get_any_eeprom(dev, useraddr,
2487 ethtool_get_module_eeprom_call,
2488 modinfo.eeprom_len);
2491 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna)
2494 case ETHTOOL_RX_COPYBREAK:
2495 case ETHTOOL_TX_COPYBREAK:
2496 case ETHTOOL_TX_COPYBREAK_BUF_SIZE:
2497 if (tuna->len != sizeof(u32) ||
2498 tuna->type_id != ETHTOOL_TUNABLE_U32)
2501 case ETHTOOL_PFC_PREVENTION_TOUT:
2502 if (tuna->len != sizeof(u16) ||
2503 tuna->type_id != ETHTOOL_TUNABLE_U16)
2513 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr)
2516 struct ethtool_tunable tuna;
2517 const struct ethtool_ops *ops = dev->ethtool_ops;
2520 if (!ops->get_tunable)
2522 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2524 ret = ethtool_tunable_valid(&tuna);
2527 data = kzalloc(tuna.len, GFP_USER);
2530 ret = ops->get_tunable(dev, &tuna, data);
2533 useraddr += sizeof(tuna);
2535 if (copy_to_user(useraddr, data, tuna.len))
2544 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr)
2547 struct ethtool_tunable tuna;
2548 const struct ethtool_ops *ops = dev->ethtool_ops;
2551 if (!ops->set_tunable)
2553 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2555 ret = ethtool_tunable_valid(&tuna);
2558 useraddr += sizeof(tuna);
2559 data = memdup_user(useraddr, tuna.len);
2561 return PTR_ERR(data);
2562 ret = ops->set_tunable(dev, &tuna, data);
2568 static noinline_for_stack int
2569 ethtool_get_per_queue_coalesce(struct net_device *dev,
2570 void __user *useraddr,
2571 struct ethtool_per_queue_op *per_queue_opt)
2575 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2577 if (!dev->ethtool_ops->get_per_queue_coalesce)
2580 useraddr += sizeof(*per_queue_opt);
2582 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask,
2585 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2586 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
2588 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce);
2591 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
2593 useraddr += sizeof(coalesce);
2599 static noinline_for_stack int
2600 ethtool_set_per_queue_coalesce(struct net_device *dev,
2601 void __user *useraddr,
2602 struct ethtool_per_queue_op *per_queue_opt)
2607 struct ethtool_coalesce *backup = NULL, *tmp = NULL;
2608 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2610 if ((!dev->ethtool_ops->set_per_queue_coalesce) ||
2611 (!dev->ethtool_ops->get_per_queue_coalesce))
2614 useraddr += sizeof(*per_queue_opt);
2616 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE);
2617 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE);
2618 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL);
2622 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2623 struct ethtool_coalesce coalesce;
2625 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp);
2631 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) {
2636 if (!ethtool_set_coalesce_supported(dev, &coalesce)) {
2641 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce);
2645 useraddr += sizeof(coalesce);
2651 for_each_set_bit(i, queue_mask, bit) {
2652 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp);
2661 static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev,
2662 void __user *useraddr, u32 sub_cmd)
2664 struct ethtool_per_queue_op per_queue_opt;
2666 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt)))
2669 if (per_queue_opt.sub_command != sub_cmd)
2672 switch (per_queue_opt.sub_command) {
2673 case ETHTOOL_GCOALESCE:
2674 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt);
2675 case ETHTOOL_SCOALESCE:
2676 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt);
2682 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna)
2685 case ETHTOOL_PHY_DOWNSHIFT:
2686 case ETHTOOL_PHY_FAST_LINK_DOWN:
2687 if (tuna->len != sizeof(u8) ||
2688 tuna->type_id != ETHTOOL_TUNABLE_U8)
2691 case ETHTOOL_PHY_EDPD:
2692 if (tuna->len != sizeof(u16) ||
2693 tuna->type_id != ETHTOOL_TUNABLE_U16)
2703 static int get_phy_tunable(struct net_device *dev, void __user *useraddr)
2705 struct phy_device *phydev = dev->phydev;
2706 struct ethtool_tunable tuna;
2707 bool phy_drv_tunable;
2711 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable;
2712 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable)
2714 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2716 ret = ethtool_phy_tunable_valid(&tuna);
2719 data = kzalloc(tuna.len, GFP_USER);
2722 if (phy_drv_tunable) {
2723 mutex_lock(&phydev->lock);
2724 ret = phydev->drv->get_tunable(phydev, &tuna, data);
2725 mutex_unlock(&phydev->lock);
2727 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data);
2731 useraddr += sizeof(tuna);
2733 if (copy_to_user(useraddr, data, tuna.len))
2742 static int set_phy_tunable(struct net_device *dev, void __user *useraddr)
2744 struct phy_device *phydev = dev->phydev;
2745 struct ethtool_tunable tuna;
2746 bool phy_drv_tunable;
2750 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable;
2751 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable)
2753 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2755 ret = ethtool_phy_tunable_valid(&tuna);
2758 useraddr += sizeof(tuna);
2759 data = memdup_user(useraddr, tuna.len);
2761 return PTR_ERR(data);
2762 if (phy_drv_tunable) {
2763 mutex_lock(&phydev->lock);
2764 ret = phydev->drv->set_tunable(phydev, &tuna, data);
2765 mutex_unlock(&phydev->lock);
2767 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data);
2774 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr)
2776 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM };
2779 if (!dev->ethtool_ops->get_fecparam)
2782 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam);
2786 if (WARN_ON_ONCE(fecparam.reserved))
2787 fecparam.reserved = 0;
2789 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam)))
2794 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr)
2796 struct ethtool_fecparam fecparam;
2798 if (!dev->ethtool_ops->set_fecparam)
2801 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam)))
2804 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE)
2807 fecparam.active_fec = 0;
2808 fecparam.reserved = 0;
2810 return dev->ethtool_ops->set_fecparam(dev, &fecparam);
2813 /* The main entry point in this file. Called from net/core/dev_ioctl.c */
2816 __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr,
2817 u32 ethcmd, struct ethtool_devlink_compat *devlink_state)
2819 struct net_device *dev;
2822 netdev_features_t old_features;
2824 dev = __dev_get_by_name(net, ifr->ifr_name);
2828 if (ethcmd == ETHTOOL_PERQUEUE) {
2829 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd)))
2834 /* Allow some commands to be done by anyone */
2837 case ETHTOOL_GDRVINFO:
2838 case ETHTOOL_GMSGLVL:
2840 case ETHTOOL_GCOALESCE:
2841 case ETHTOOL_GRINGPARAM:
2842 case ETHTOOL_GPAUSEPARAM:
2843 case ETHTOOL_GRXCSUM:
2844 case ETHTOOL_GTXCSUM:
2846 case ETHTOOL_GSSET_INFO:
2847 case ETHTOOL_GSTRINGS:
2848 case ETHTOOL_GSTATS:
2849 case ETHTOOL_GPHYSTATS:
2851 case ETHTOOL_GPERMADDR:
2855 case ETHTOOL_GFLAGS:
2856 case ETHTOOL_GPFLAGS:
2858 case ETHTOOL_GRXRINGS:
2859 case ETHTOOL_GRXCLSRLCNT:
2860 case ETHTOOL_GRXCLSRULE:
2861 case ETHTOOL_GRXCLSRLALL:
2862 case ETHTOOL_GRXFHINDIR:
2864 case ETHTOOL_GFEATURES:
2865 case ETHTOOL_GCHANNELS:
2866 case ETHTOOL_GET_TS_INFO:
2868 case ETHTOOL_GTUNABLE:
2869 case ETHTOOL_PHY_GTUNABLE:
2870 case ETHTOOL_GLINKSETTINGS:
2871 case ETHTOOL_GFECPARAM:
2874 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
2878 if (dev->dev.parent)
2879 pm_runtime_get_sync(dev->dev.parent);
2881 if (!netif_device_present(dev)) {
2886 if (dev->ethtool_ops->begin) {
2887 rc = dev->ethtool_ops->begin(dev);
2891 old_features = dev->features;
2895 rc = ethtool_get_settings(dev, useraddr);
2898 rc = ethtool_set_settings(dev, useraddr);
2900 case ETHTOOL_GDRVINFO:
2901 rc = ethtool_get_drvinfo(dev, devlink_state);
2904 rc = ethtool_get_regs(dev, useraddr);
2907 rc = ethtool_get_wol(dev, useraddr);
2910 rc = ethtool_set_wol(dev, useraddr);
2912 case ETHTOOL_GMSGLVL:
2913 rc = ethtool_get_value(dev, useraddr, ethcmd,
2914 dev->ethtool_ops->get_msglevel);
2916 case ETHTOOL_SMSGLVL:
2917 rc = ethtool_set_value_void(dev, useraddr,
2918 dev->ethtool_ops->set_msglevel);
2920 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL);
2923 rc = ethtool_get_eee(dev, useraddr);
2926 rc = ethtool_set_eee(dev, useraddr);
2928 case ETHTOOL_NWAY_RST:
2929 rc = ethtool_nway_reset(dev);
2932 rc = ethtool_get_link(dev, useraddr);
2934 case ETHTOOL_GEEPROM:
2935 rc = ethtool_get_eeprom(dev, useraddr);
2937 case ETHTOOL_SEEPROM:
2938 rc = ethtool_set_eeprom(dev, useraddr);
2940 case ETHTOOL_GCOALESCE:
2941 rc = ethtool_get_coalesce(dev, useraddr);
2943 case ETHTOOL_SCOALESCE:
2944 rc = ethtool_set_coalesce(dev, useraddr);
2946 case ETHTOOL_GRINGPARAM:
2947 rc = ethtool_get_ringparam(dev, useraddr);
2949 case ETHTOOL_SRINGPARAM:
2950 rc = ethtool_set_ringparam(dev, useraddr);
2952 case ETHTOOL_GPAUSEPARAM:
2953 rc = ethtool_get_pauseparam(dev, useraddr);
2955 case ETHTOOL_SPAUSEPARAM:
2956 rc = ethtool_set_pauseparam(dev, useraddr);
2959 rc = ethtool_self_test(dev, useraddr);
2961 case ETHTOOL_GSTRINGS:
2962 rc = ethtool_get_strings(dev, useraddr);
2964 case ETHTOOL_PHYS_ID:
2965 rc = ethtool_phys_id(dev, useraddr);
2967 case ETHTOOL_GSTATS:
2968 rc = ethtool_get_stats(dev, useraddr);
2970 case ETHTOOL_GPERMADDR:
2971 rc = ethtool_get_perm_addr(dev, useraddr);
2973 case ETHTOOL_GFLAGS:
2974 rc = ethtool_get_value(dev, useraddr, ethcmd,
2975 __ethtool_get_flags);
2977 case ETHTOOL_SFLAGS:
2978 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
2980 case ETHTOOL_GPFLAGS:
2981 rc = ethtool_get_value(dev, useraddr, ethcmd,
2982 dev->ethtool_ops->get_priv_flags);
2984 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL);
2986 case ETHTOOL_SPFLAGS:
2987 rc = ethtool_set_value(dev, useraddr,
2988 dev->ethtool_ops->set_priv_flags);
2991 case ETHTOOL_GRXRINGS:
2992 case ETHTOOL_GRXCLSRLCNT:
2993 case ETHTOOL_GRXCLSRULE:
2994 case ETHTOOL_GRXCLSRLALL:
2995 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
2998 case ETHTOOL_SRXCLSRLDEL:
2999 case ETHTOOL_SRXCLSRLINS:
3000 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
3002 case ETHTOOL_FLASHDEV:
3003 rc = ethtool_flash_device(dev, devlink_state);
3006 rc = ethtool_reset(dev, useraddr);
3008 case ETHTOOL_GSSET_INFO:
3009 rc = ethtool_get_sset_info(dev, useraddr);
3011 case ETHTOOL_GRXFHINDIR:
3012 rc = ethtool_get_rxfh_indir(dev, useraddr);
3014 case ETHTOOL_SRXFHINDIR:
3015 rc = ethtool_set_rxfh_indir(dev, useraddr);
3018 rc = ethtool_get_rxfh(dev, useraddr);
3021 rc = ethtool_set_rxfh(dev, useraddr);
3023 case ETHTOOL_GFEATURES:
3024 rc = ethtool_get_features(dev, useraddr);
3026 case ETHTOOL_SFEATURES:
3027 rc = ethtool_set_features(dev, useraddr);
3029 case ETHTOOL_GTXCSUM:
3030 case ETHTOOL_GRXCSUM:
3035 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
3037 case ETHTOOL_STXCSUM:
3038 case ETHTOOL_SRXCSUM:
3043 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
3045 case ETHTOOL_GCHANNELS:
3046 rc = ethtool_get_channels(dev, useraddr);
3048 case ETHTOOL_SCHANNELS:
3049 rc = ethtool_set_channels(dev, useraddr);
3051 case ETHTOOL_SET_DUMP:
3052 rc = ethtool_set_dump(dev, useraddr);
3054 case ETHTOOL_GET_DUMP_FLAG:
3055 rc = ethtool_get_dump_flag(dev, useraddr);
3057 case ETHTOOL_GET_DUMP_DATA:
3058 rc = ethtool_get_dump_data(dev, useraddr);
3060 case ETHTOOL_GET_TS_INFO:
3061 rc = ethtool_get_ts_info(dev, useraddr);
3063 case ETHTOOL_GMODULEINFO:
3064 rc = ethtool_get_module_info(dev, useraddr);
3066 case ETHTOOL_GMODULEEEPROM:
3067 rc = ethtool_get_module_eeprom(dev, useraddr);
3069 case ETHTOOL_GTUNABLE:
3070 rc = ethtool_get_tunable(dev, useraddr);
3072 case ETHTOOL_STUNABLE:
3073 rc = ethtool_set_tunable(dev, useraddr);
3075 case ETHTOOL_GPHYSTATS:
3076 rc = ethtool_get_phy_stats(dev, useraddr);
3078 case ETHTOOL_PERQUEUE:
3079 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd);
3081 case ETHTOOL_GLINKSETTINGS:
3082 rc = ethtool_get_link_ksettings(dev, useraddr);
3084 case ETHTOOL_SLINKSETTINGS:
3085 rc = ethtool_set_link_ksettings(dev, useraddr);
3087 case ETHTOOL_PHY_GTUNABLE:
3088 rc = get_phy_tunable(dev, useraddr);
3090 case ETHTOOL_PHY_STUNABLE:
3091 rc = set_phy_tunable(dev, useraddr);
3093 case ETHTOOL_GFECPARAM:
3094 rc = ethtool_get_fecparam(dev, useraddr);
3096 case ETHTOOL_SFECPARAM:
3097 rc = ethtool_set_fecparam(dev, useraddr);
3103 if (dev->ethtool_ops->complete)
3104 dev->ethtool_ops->complete(dev);
3106 if (old_features != dev->features)
3107 netdev_features_change(dev);
3109 if (dev->dev.parent)
3110 pm_runtime_put(dev->dev.parent);
3115 int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr)
3117 struct ethtool_devlink_compat *state;
3121 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd)))
3124 state = kzalloc(sizeof(*state), GFP_KERNEL);
3129 case ETHTOOL_FLASHDEV:
3130 if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) {
3134 state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
3139 rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state);
3145 case ETHTOOL_FLASHDEV:
3147 rc = devlink_compat_flash_update(state->devlink,
3150 case ETHTOOL_GDRVINFO:
3152 devlink_compat_running_version(state->devlink,
3153 state->info.fw_version,
3154 sizeof(state->info.fw_version));
3155 if (copy_to_user(useraddr, &state->info, sizeof(state->info))) {
3164 devlink_put(state->devlink);
3169 struct ethtool_rx_flow_key {
3170 struct flow_dissector_key_basic basic;
3172 struct flow_dissector_key_ipv4_addrs ipv4;
3173 struct flow_dissector_key_ipv6_addrs ipv6;
3175 struct flow_dissector_key_ports tp;
3176 struct flow_dissector_key_ip ip;
3177 struct flow_dissector_key_vlan vlan;
3178 struct flow_dissector_key_eth_addrs eth_addrs;
3179 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
3181 struct ethtool_rx_flow_match {
3182 struct flow_dissector dissector;
3183 struct ethtool_rx_flow_key key;
3184 struct ethtool_rx_flow_key mask;
3187 struct ethtool_rx_flow_rule *
3188 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input)
3190 const struct ethtool_rx_flow_spec *fs = input->fs;
3191 struct ethtool_rx_flow_match *match;
3192 struct ethtool_rx_flow_rule *flow;
3193 struct flow_action_entry *act;
3195 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) +
3196 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL);
3198 return ERR_PTR(-ENOMEM);
3200 /* ethtool_rx supports only one single action per rule. */
3201 flow->rule = flow_rule_alloc(1);
3204 return ERR_PTR(-ENOMEM);
3207 match = (struct ethtool_rx_flow_match *)flow->priv;
3208 flow->rule->match.dissector = &match->dissector;
3209 flow->rule->match.mask = &match->mask;
3210 flow->rule->match.key = &match->key;
3212 match->mask.basic.n_proto = htons(0xffff);
3214 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) {
3216 const struct ethhdr *ether_spec, *ether_m_spec;
3218 ether_spec = &fs->h_u.ether_spec;
3219 ether_m_spec = &fs->m_u.ether_spec;
3221 if (!is_zero_ether_addr(ether_m_spec->h_source)) {
3222 ether_addr_copy(match->key.eth_addrs.src,
3223 ether_spec->h_source);
3224 ether_addr_copy(match->mask.eth_addrs.src,
3225 ether_m_spec->h_source);
3227 if (!is_zero_ether_addr(ether_m_spec->h_dest)) {
3228 ether_addr_copy(match->key.eth_addrs.dst,
3229 ether_spec->h_dest);
3230 ether_addr_copy(match->mask.eth_addrs.dst,
3231 ether_m_spec->h_dest);
3233 if (ether_m_spec->h_proto) {
3234 match->key.basic.n_proto = ether_spec->h_proto;
3235 match->mask.basic.n_proto = ether_m_spec->h_proto;
3241 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec;
3243 match->key.basic.n_proto = htons(ETH_P_IP);
3245 v4_spec = &fs->h_u.tcp_ip4_spec;
3246 v4_m_spec = &fs->m_u.tcp_ip4_spec;
3248 if (v4_m_spec->ip4src) {
3249 match->key.ipv4.src = v4_spec->ip4src;
3250 match->mask.ipv4.src = v4_m_spec->ip4src;
3252 if (v4_m_spec->ip4dst) {
3253 match->key.ipv4.dst = v4_spec->ip4dst;
3254 match->mask.ipv4.dst = v4_m_spec->ip4dst;
3256 if (v4_m_spec->ip4src ||
3257 v4_m_spec->ip4dst) {
3258 match->dissector.used_keys |=
3259 BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS);
3260 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] =
3261 offsetof(struct ethtool_rx_flow_key, ipv4);
3263 if (v4_m_spec->psrc) {
3264 match->key.tp.src = v4_spec->psrc;
3265 match->mask.tp.src = v4_m_spec->psrc;
3267 if (v4_m_spec->pdst) {
3268 match->key.tp.dst = v4_spec->pdst;
3269 match->mask.tp.dst = v4_m_spec->pdst;
3271 if (v4_m_spec->psrc ||
3273 match->dissector.used_keys |=
3274 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS);
3275 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] =
3276 offsetof(struct ethtool_rx_flow_key, tp);
3278 if (v4_m_spec->tos) {
3279 match->key.ip.tos = v4_spec->tos;
3280 match->mask.ip.tos = v4_m_spec->tos;
3281 match->dissector.used_keys |=
3282 BIT(FLOW_DISSECTOR_KEY_IP);
3283 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] =
3284 offsetof(struct ethtool_rx_flow_key, ip);
3290 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec;
3292 match->key.basic.n_proto = htons(ETH_P_IPV6);
3294 v6_spec = &fs->h_u.tcp_ip6_spec;
3295 v6_m_spec = &fs->m_u.tcp_ip6_spec;
3296 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) {
3297 memcpy(&match->key.ipv6.src, v6_spec->ip6src,
3298 sizeof(match->key.ipv6.src));
3299 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src,
3300 sizeof(match->mask.ipv6.src));
3302 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) {
3303 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst,
3304 sizeof(match->key.ipv6.dst));
3305 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst,
3306 sizeof(match->mask.ipv6.dst));
3308 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) ||
3309 !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) {
3310 match->dissector.used_keys |=
3311 BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS);
3312 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] =
3313 offsetof(struct ethtool_rx_flow_key, ipv6);
3315 if (v6_m_spec->psrc) {
3316 match->key.tp.src = v6_spec->psrc;
3317 match->mask.tp.src = v6_m_spec->psrc;
3319 if (v6_m_spec->pdst) {
3320 match->key.tp.dst = v6_spec->pdst;
3321 match->mask.tp.dst = v6_m_spec->pdst;
3323 if (v6_m_spec->psrc ||
3325 match->dissector.used_keys |=
3326 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS);
3327 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] =
3328 offsetof(struct ethtool_rx_flow_key, tp);
3330 if (v6_m_spec->tclass) {
3331 match->key.ip.tos = v6_spec->tclass;
3332 match->mask.ip.tos = v6_m_spec->tclass;
3333 match->dissector.used_keys |=
3334 BIT_ULL(FLOW_DISSECTOR_KEY_IP);
3335 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] =
3336 offsetof(struct ethtool_rx_flow_key, ip);
3341 ethtool_rx_flow_rule_destroy(flow);
3342 return ERR_PTR(-EINVAL);
3345 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) {
3348 match->key.basic.ip_proto = IPPROTO_TCP;
3349 match->mask.basic.ip_proto = 0xff;
3353 match->key.basic.ip_proto = IPPROTO_UDP;
3354 match->mask.basic.ip_proto = 0xff;
3358 match->dissector.used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_BASIC);
3359 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] =
3360 offsetof(struct ethtool_rx_flow_key, basic);
3362 if (fs->flow_type & FLOW_EXT) {
3363 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext;
3364 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext;
3366 if (ext_m_spec->vlan_etype) {
3367 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype;
3368 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype;
3371 if (ext_m_spec->vlan_tci) {
3372 match->key.vlan.vlan_id =
3373 ntohs(ext_h_spec->vlan_tci) & 0x0fff;
3374 match->mask.vlan.vlan_id =
3375 ntohs(ext_m_spec->vlan_tci) & 0x0fff;
3377 match->key.vlan.vlan_dei =
3378 !!(ext_h_spec->vlan_tci & htons(0x1000));
3379 match->mask.vlan.vlan_dei =
3380 !!(ext_m_spec->vlan_tci & htons(0x1000));
3382 match->key.vlan.vlan_priority =
3383 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13;
3384 match->mask.vlan.vlan_priority =
3385 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13;
3388 if (ext_m_spec->vlan_etype ||
3389 ext_m_spec->vlan_tci) {
3390 match->dissector.used_keys |=
3391 BIT_ULL(FLOW_DISSECTOR_KEY_VLAN);
3392 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] =
3393 offsetof(struct ethtool_rx_flow_key, vlan);
3396 if (fs->flow_type & FLOW_MAC_EXT) {
3397 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext;
3398 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext;
3400 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest,
3402 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest,
3405 match->dissector.used_keys |=
3406 BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS);
3407 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] =
3408 offsetof(struct ethtool_rx_flow_key, eth_addrs);
3411 act = &flow->rule->action.entries[0];
3412 switch (fs->ring_cookie) {
3413 case RX_CLS_FLOW_DISC:
3414 act->id = FLOW_ACTION_DROP;
3416 case RX_CLS_FLOW_WAKE:
3417 act->id = FLOW_ACTION_WAKE;
3420 act->id = FLOW_ACTION_QUEUE;
3421 if (fs->flow_type & FLOW_RSS)
3422 act->queue.ctx = input->rss_ctx;
3424 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie);
3425 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie);
3431 EXPORT_SYMBOL(ethtool_rx_flow_rule_create);
3433 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow)
3438 EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy);