2 * net/core/ethtool.c - Ethtool ioctl handler
3 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx>
5 * This file is where we call all the ethtool_ops commands to get
6 * the information ethtool needs.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
14 #include <linux/module.h>
15 #include <linux/types.h>
16 #include <linux/capability.h>
17 #include <linux/errno.h>
18 #include <linux/ethtool.h>
19 #include <linux/netdevice.h>
20 #include <linux/bitops.h>
21 #include <linux/uaccess.h>
22 #include <linux/vmalloc.h>
23 #include <linux/slab.h>
26 * Some useful ethtool_ops methods that're device independent.
27 * If we find that all drivers want to do the same thing here,
28 * we can turn these into dev_() function calls.
31 u32 ethtool_op_get_link(struct net_device *dev)
33 return netif_carrier_ok(dev) ? 1 : 0;
35 EXPORT_SYMBOL(ethtool_op_get_link);
37 u32 ethtool_op_get_tx_csum(struct net_device *dev)
39 return (dev->features & NETIF_F_ALL_CSUM) != 0;
41 EXPORT_SYMBOL(ethtool_op_get_tx_csum);
43 int ethtool_op_set_tx_csum(struct net_device *dev, u32 data)
46 dev->features |= NETIF_F_IP_CSUM;
48 dev->features &= ~NETIF_F_IP_CSUM;
52 EXPORT_SYMBOL(ethtool_op_set_tx_csum);
54 int ethtool_op_set_tx_hw_csum(struct net_device *dev, u32 data)
57 dev->features |= NETIF_F_HW_CSUM;
59 dev->features &= ~NETIF_F_HW_CSUM;
63 EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum);
65 int ethtool_op_set_tx_ipv6_csum(struct net_device *dev, u32 data)
68 dev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
70 dev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
74 EXPORT_SYMBOL(ethtool_op_set_tx_ipv6_csum);
76 u32 ethtool_op_get_sg(struct net_device *dev)
78 return (dev->features & NETIF_F_SG) != 0;
80 EXPORT_SYMBOL(ethtool_op_get_sg);
82 int ethtool_op_set_sg(struct net_device *dev, u32 data)
85 dev->features |= NETIF_F_SG;
87 dev->features &= ~NETIF_F_SG;
91 EXPORT_SYMBOL(ethtool_op_set_sg);
93 u32 ethtool_op_get_tso(struct net_device *dev)
95 return (dev->features & NETIF_F_TSO) != 0;
97 EXPORT_SYMBOL(ethtool_op_get_tso);
99 int ethtool_op_set_tso(struct net_device *dev, u32 data)
102 dev->features |= NETIF_F_TSO;
104 dev->features &= ~NETIF_F_TSO;
108 EXPORT_SYMBOL(ethtool_op_set_tso);
110 u32 ethtool_op_get_ufo(struct net_device *dev)
112 return (dev->features & NETIF_F_UFO) != 0;
114 EXPORT_SYMBOL(ethtool_op_get_ufo);
116 int ethtool_op_set_ufo(struct net_device *dev, u32 data)
119 dev->features |= NETIF_F_UFO;
121 dev->features &= ~NETIF_F_UFO;
124 EXPORT_SYMBOL(ethtool_op_set_ufo);
126 /* the following list of flags are the same as their associated
127 * NETIF_F_xxx values in include/linux/netdevice.h
129 static const u32 flags_dup_features =
130 (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | ETH_FLAG_NTUPLE |
133 u32 ethtool_op_get_flags(struct net_device *dev)
135 /* in the future, this function will probably contain additional
136 * handling for flags which are not so easily handled
137 * by a simple masking operation
140 return dev->features & flags_dup_features;
142 EXPORT_SYMBOL(ethtool_op_get_flags);
144 /* Check if device can enable (or disable) particular feature coded in "data"
145 * argument. Flags "supported" describe features that can be toggled by device.
146 * If feature can not be toggled, it state (enabled or disabled) must match
147 * hardcoded device features state, otherwise flags are marked as invalid.
149 bool ethtool_invalid_flags(struct net_device *dev, u32 data, u32 supported)
151 u32 features = dev->features & flags_dup_features;
152 /* "data" can contain only flags_dup_features bits,
153 * see __ethtool_set_flags */
155 return (features & ~supported) != (data & ~supported);
157 EXPORT_SYMBOL(ethtool_invalid_flags);
159 int ethtool_op_set_flags(struct net_device *dev, u32 data, u32 supported)
161 if (ethtool_invalid_flags(dev, data, supported))
164 dev->features = ((dev->features & ~flags_dup_features) |
165 (data & flags_dup_features));
168 EXPORT_SYMBOL(ethtool_op_set_flags);
170 void ethtool_ntuple_flush(struct net_device *dev)
172 struct ethtool_rx_ntuple_flow_spec_container *fsc, *f;
174 list_for_each_entry_safe(fsc, f, &dev->ethtool_ntuple_list.list, list) {
175 list_del(&fsc->list);
178 dev->ethtool_ntuple_list.count = 0;
180 EXPORT_SYMBOL(ethtool_ntuple_flush);
182 /* Handlers for each ethtool command */
184 #define ETHTOOL_DEV_FEATURE_WORDS 1
186 static void ethtool_get_features_compat(struct net_device *dev,
187 struct ethtool_get_features_block *features)
189 if (!dev->ethtool_ops)
192 /* getting RX checksum */
193 if (dev->ethtool_ops->get_rx_csum)
194 if (dev->ethtool_ops->get_rx_csum(dev))
195 features[0].active |= NETIF_F_RXCSUM;
197 /* mark legacy-changeable features */
198 if (dev->ethtool_ops->set_sg)
199 features[0].available |= NETIF_F_SG;
200 if (dev->ethtool_ops->set_tx_csum)
201 features[0].available |= NETIF_F_ALL_CSUM;
202 if (dev->ethtool_ops->set_tso)
203 features[0].available |= NETIF_F_ALL_TSO;
204 if (dev->ethtool_ops->set_rx_csum)
205 features[0].available |= NETIF_F_RXCSUM;
206 if (dev->ethtool_ops->set_flags)
207 features[0].available |= flags_dup_features;
210 static int ethtool_set_feature_compat(struct net_device *dev,
211 int (*legacy_set)(struct net_device *, u32),
212 struct ethtool_set_features_block *features, u32 mask)
219 if (!(features[0].valid & mask))
222 features[0].valid &= ~mask;
224 do_set = !!(features[0].requested & mask);
226 if (legacy_set(dev, do_set) < 0)
228 "Legacy feature change (%s) failed for 0x%08x\n",
229 do_set ? "set" : "clear", mask);
234 static int ethtool_set_features_compat(struct net_device *dev,
235 struct ethtool_set_features_block *features)
239 if (!dev->ethtool_ops)
242 compat = ethtool_set_feature_compat(dev, dev->ethtool_ops->set_sg,
243 features, NETIF_F_SG);
244 compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_tx_csum,
245 features, NETIF_F_ALL_CSUM);
246 compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_tso,
247 features, NETIF_F_ALL_TSO);
248 compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_rx_csum,
249 features, NETIF_F_RXCSUM);
250 compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_flags,
251 features, flags_dup_features);
256 static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
258 struct ethtool_gfeatures cmd = {
259 .cmd = ETHTOOL_GFEATURES,
260 .size = ETHTOOL_DEV_FEATURE_WORDS,
262 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS] = {
264 .available = dev->hw_features,
265 .requested = dev->wanted_features,
266 .active = dev->features,
267 .never_changed = NETIF_F_NEVER_CHANGE,
270 u32 __user *sizeaddr;
273 ethtool_get_features_compat(dev, features);
275 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
276 if (get_user(copy_size, sizeaddr))
279 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
280 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
282 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
284 useraddr += sizeof(cmd);
285 if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
291 static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
293 struct ethtool_sfeatures cmd;
294 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
297 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
299 useraddr += sizeof(cmd);
301 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
304 if (copy_from_user(features, useraddr, sizeof(features)))
307 if (features[0].valid & ~NETIF_F_ETHTOOL_BITS)
310 if (ethtool_set_features_compat(dev, features))
311 ret |= ETHTOOL_F_COMPAT;
313 if (features[0].valid & ~dev->hw_features) {
314 features[0].valid &= dev->hw_features;
315 ret |= ETHTOOL_F_UNSUPPORTED;
318 dev->wanted_features &= ~features[0].valid;
319 dev->wanted_features |= features[0].valid & features[0].requested;
320 netdev_update_features(dev);
322 if ((dev->wanted_features ^ dev->features) & features[0].valid)
323 ret |= ETHTOOL_F_WISH;
328 static const char netdev_features_strings[ETHTOOL_DEV_FEATURE_WORDS * 32][ETH_GSTRING_LEN] = {
329 /* NETIF_F_SG */ "tx-scatter-gather",
330 /* NETIF_F_IP_CSUM */ "tx-checksum-ipv4",
331 /* NETIF_F_NO_CSUM */ "tx-checksum-unneeded",
332 /* NETIF_F_HW_CSUM */ "tx-checksum-ip-generic",
333 /* NETIF_F_IPV6_CSUM */ "tx_checksum-ipv6",
334 /* NETIF_F_HIGHDMA */ "highdma",
335 /* NETIF_F_FRAGLIST */ "tx-scatter-gather-fraglist",
336 /* NETIF_F_HW_VLAN_TX */ "tx-vlan-hw-insert",
338 /* NETIF_F_HW_VLAN_RX */ "rx-vlan-hw-parse",
339 /* NETIF_F_HW_VLAN_FILTER */ "rx-vlan-filter",
340 /* NETIF_F_VLAN_CHALLENGED */ "vlan-challenged",
341 /* NETIF_F_GSO */ "tx-generic-segmentation",
342 /* NETIF_F_LLTX */ "tx-lockless",
343 /* NETIF_F_NETNS_LOCAL */ "netns-local",
344 /* NETIF_F_GRO */ "rx-gro",
345 /* NETIF_F_LRO */ "rx-lro",
347 /* NETIF_F_TSO */ "tx-tcp-segmentation",
348 /* NETIF_F_UFO */ "tx-udp-fragmentation",
349 /* NETIF_F_GSO_ROBUST */ "tx-gso-robust",
350 /* NETIF_F_TSO_ECN */ "tx-tcp-ecn-segmentation",
351 /* NETIF_F_TSO6 */ "tx-tcp6-segmentation",
352 /* NETIF_F_FSO */ "tx-fcoe-segmentation",
356 /* NETIF_F_FCOE_CRC */ "tx-checksum-fcoe-crc",
357 /* NETIF_F_SCTP_CSUM */ "tx-checksum-sctp",
358 /* NETIF_F_FCOE_MTU */ "fcoe-mtu",
359 /* NETIF_F_NTUPLE */ "rx-ntuple-filter",
360 /* NETIF_F_RXHASH */ "rx-hashing",
361 /* NETIF_F_RXCSUM */ "rx-checksum",
366 static int __ethtool_get_sset_count(struct net_device *dev, int sset)
368 const struct ethtool_ops *ops = dev->ethtool_ops;
370 if (sset == ETH_SS_FEATURES)
371 return ARRAY_SIZE(netdev_features_strings);
373 if (ops && ops->get_sset_count && ops->get_strings)
374 return ops->get_sset_count(dev, sset);
379 static void __ethtool_get_strings(struct net_device *dev,
380 u32 stringset, u8 *data)
382 const struct ethtool_ops *ops = dev->ethtool_ops;
384 if (stringset == ETH_SS_FEATURES)
385 memcpy(data, netdev_features_strings,
386 sizeof(netdev_features_strings));
388 /* ops->get_strings is valid because checked earlier */
389 ops->get_strings(dev, stringset, data);
392 static u32 ethtool_get_feature_mask(u32 eth_cmd)
394 /* feature masks of legacy discrete ethtool ops */
397 case ETHTOOL_GTXCSUM:
398 case ETHTOOL_STXCSUM:
399 return NETIF_F_ALL_CSUM | NETIF_F_SCTP_CSUM;
400 case ETHTOOL_GRXCSUM:
401 case ETHTOOL_SRXCSUM:
402 return NETIF_F_RXCSUM;
408 return NETIF_F_ALL_TSO;
423 static void *__ethtool_get_one_feature_actor(struct net_device *dev, u32 ethcmd)
425 const struct ethtool_ops *ops = dev->ethtool_ops;
431 case ETHTOOL_GTXCSUM:
432 return ops->get_tx_csum;
433 case ETHTOOL_GRXCSUM:
434 return ops->get_rx_csum;
446 static u32 __ethtool_get_rx_csum_oldbug(struct net_device *dev)
448 return !!(dev->features & NETIF_F_ALL_CSUM);
451 static int ethtool_get_one_feature(struct net_device *dev,
452 char __user *useraddr, u32 ethcmd)
454 u32 mask = ethtool_get_feature_mask(ethcmd);
455 struct ethtool_value edata = {
457 .data = !!(dev->features & mask),
460 /* compatibility with discrete get_ ops */
461 if (!(dev->hw_features & mask)) {
462 u32 (*actor)(struct net_device *);
464 actor = __ethtool_get_one_feature_actor(dev, ethcmd);
466 /* bug compatibility with old get_rx_csum */
467 if (ethcmd == ETHTOOL_GRXCSUM && !actor)
468 actor = __ethtool_get_rx_csum_oldbug;
471 edata.data = actor(dev);
474 if (copy_to_user(useraddr, &edata, sizeof(edata)))
479 static int __ethtool_set_tx_csum(struct net_device *dev, u32 data);
480 static int __ethtool_set_rx_csum(struct net_device *dev, u32 data);
481 static int __ethtool_set_sg(struct net_device *dev, u32 data);
482 static int __ethtool_set_tso(struct net_device *dev, u32 data);
483 static int __ethtool_set_ufo(struct net_device *dev, u32 data);
485 static int ethtool_set_one_feature(struct net_device *dev,
486 void __user *useraddr, u32 ethcmd)
488 struct ethtool_value edata;
491 if (copy_from_user(&edata, useraddr, sizeof(edata)))
494 mask = ethtool_get_feature_mask(ethcmd);
495 mask &= dev->hw_features;
498 dev->wanted_features |= mask;
500 dev->wanted_features &= ~mask;
502 netdev_update_features(dev);
506 /* Driver is not converted to ndo_fix_features or does not
507 * support changing this offload. In the latter case it won't
508 * have corresponding ethtool_ops field set.
510 * Following part is to be removed after all drivers advertise
511 * their changeable features in netdev->hw_features and stop
512 * using discrete offload setting ops.
516 case ETHTOOL_STXCSUM:
517 return __ethtool_set_tx_csum(dev, edata.data);
518 case ETHTOOL_SRXCSUM:
519 return __ethtool_set_rx_csum(dev, edata.data);
521 return __ethtool_set_sg(dev, edata.data);
523 return __ethtool_set_tso(dev, edata.data);
525 return __ethtool_set_ufo(dev, edata.data);
531 int __ethtool_set_flags(struct net_device *dev, u32 data)
535 if (data & ~flags_dup_features)
538 /* legacy set_flags() op */
539 if (dev->ethtool_ops->set_flags) {
540 if (unlikely(dev->hw_features & flags_dup_features))
542 "driver BUG: mixed hw_features and set_flags()\n");
543 return dev->ethtool_ops->set_flags(dev, data);
546 /* allow changing only bits set in hw_features */
547 changed = (data ^ dev->wanted_features) & flags_dup_features;
548 if (changed & ~dev->hw_features)
549 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
551 dev->wanted_features =
552 (dev->wanted_features & ~changed) | data;
554 netdev_update_features(dev);
559 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
561 struct ethtool_cmd cmd = { .cmd = ETHTOOL_GSET };
564 if (!dev->ethtool_ops->get_settings)
567 err = dev->ethtool_ops->get_settings(dev, &cmd);
571 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
576 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
578 struct ethtool_cmd cmd;
580 if (!dev->ethtool_ops->set_settings)
583 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
586 return dev->ethtool_ops->set_settings(dev, &cmd);
589 static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
590 void __user *useraddr)
592 struct ethtool_drvinfo info;
593 const struct ethtool_ops *ops = dev->ethtool_ops;
595 memset(&info, 0, sizeof(info));
596 info.cmd = ETHTOOL_GDRVINFO;
597 if (ops && ops->get_drvinfo) {
598 ops->get_drvinfo(dev, &info);
599 } else if (dev->dev.parent && dev->dev.parent->driver) {
600 strlcpy(info.bus_info, dev_name(dev->dev.parent),
601 sizeof(info.bus_info));
602 strlcpy(info.driver, dev->dev.parent->driver->name,
603 sizeof(info.driver));
609 * this method of obtaining string set info is deprecated;
610 * Use ETHTOOL_GSSET_INFO instead.
612 if (ops && ops->get_sset_count) {
615 rc = ops->get_sset_count(dev, ETH_SS_TEST);
617 info.testinfo_len = rc;
618 rc = ops->get_sset_count(dev, ETH_SS_STATS);
621 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
623 info.n_priv_flags = rc;
625 if (ops && ops->get_regs_len)
626 info.regdump_len = ops->get_regs_len(dev);
627 if (ops && ops->get_eeprom_len)
628 info.eedump_len = ops->get_eeprom_len(dev);
630 if (copy_to_user(useraddr, &info, sizeof(info)))
635 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
636 void __user *useraddr)
638 struct ethtool_sset_info info;
640 int i, idx = 0, n_bits = 0, ret, rc;
641 u32 *info_buf = NULL;
643 if (copy_from_user(&info, useraddr, sizeof(info)))
646 /* store copy of mask, because we zero struct later on */
647 sset_mask = info.sset_mask;
651 /* calculate size of return buffer */
652 n_bits = hweight64(sset_mask);
654 memset(&info, 0, sizeof(info));
655 info.cmd = ETHTOOL_GSSET_INFO;
657 info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
662 * fill return buffer based on input bitmask and successful
663 * get_sset_count return
665 for (i = 0; i < 64; i++) {
666 if (!(sset_mask & (1ULL << i)))
669 rc = __ethtool_get_sset_count(dev, i);
671 info.sset_mask |= (1ULL << i);
672 info_buf[idx++] = rc;
677 if (copy_to_user(useraddr, &info, sizeof(info)))
680 useraddr += offsetof(struct ethtool_sset_info, data);
681 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
691 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
692 u32 cmd, void __user *useraddr)
694 struct ethtool_rxnfc info;
695 size_t info_size = sizeof(info);
697 if (!dev->ethtool_ops->set_rxnfc)
700 /* struct ethtool_rxnfc was originally defined for
701 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
702 * members. User-space might still be using that
704 if (cmd == ETHTOOL_SRXFH)
705 info_size = (offsetof(struct ethtool_rxnfc, data) +
708 if (copy_from_user(&info, useraddr, info_size))
711 return dev->ethtool_ops->set_rxnfc(dev, &info);
714 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
715 u32 cmd, void __user *useraddr)
717 struct ethtool_rxnfc info;
718 size_t info_size = sizeof(info);
719 const struct ethtool_ops *ops = dev->ethtool_ops;
721 void *rule_buf = NULL;
726 /* struct ethtool_rxnfc was originally defined for
727 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
728 * members. User-space might still be using that
730 if (cmd == ETHTOOL_GRXFH)
731 info_size = (offsetof(struct ethtool_rxnfc, data) +
734 if (copy_from_user(&info, useraddr, info_size))
737 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
738 if (info.rule_cnt > 0) {
739 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
740 rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
747 ret = ops->get_rxnfc(dev, &info, rule_buf);
752 if (copy_to_user(useraddr, &info, info_size))
756 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
757 if (copy_to_user(useraddr, rule_buf,
758 info.rule_cnt * sizeof(u32)))
769 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
770 void __user *useraddr)
772 struct ethtool_rxfh_indir *indir;
777 if (!dev->ethtool_ops->get_rxfh_indir)
780 if (copy_from_user(&table_size,
781 useraddr + offsetof(struct ethtool_rxfh_indir, size),
786 (KMALLOC_MAX_SIZE - sizeof(*indir)) / sizeof(*indir->ring_index))
788 full_size = sizeof(*indir) + sizeof(*indir->ring_index) * table_size;
789 indir = kzalloc(full_size, GFP_USER);
793 indir->cmd = ETHTOOL_GRXFHINDIR;
794 indir->size = table_size;
795 ret = dev->ethtool_ops->get_rxfh_indir(dev, indir);
799 if (copy_to_user(useraddr, indir, full_size))
807 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
808 void __user *useraddr)
810 struct ethtool_rxfh_indir *indir;
815 if (!dev->ethtool_ops->set_rxfh_indir)
818 if (copy_from_user(&table_size,
819 useraddr + offsetof(struct ethtool_rxfh_indir, size),
824 (KMALLOC_MAX_SIZE - sizeof(*indir)) / sizeof(*indir->ring_index))
826 full_size = sizeof(*indir) + sizeof(*indir->ring_index) * table_size;
827 indir = kmalloc(full_size, GFP_USER);
831 if (copy_from_user(indir, useraddr, full_size)) {
836 ret = dev->ethtool_ops->set_rxfh_indir(dev, indir);
843 static void __rx_ntuple_filter_add(struct ethtool_rx_ntuple_list *list,
844 struct ethtool_rx_ntuple_flow_spec *spec,
845 struct ethtool_rx_ntuple_flow_spec_container *fsc)
848 /* don't add filters forever */
849 if (list->count >= ETHTOOL_MAX_NTUPLE_LIST_ENTRY) {
850 /* free the container */
855 /* Copy the whole filter over */
856 fsc->fs.flow_type = spec->flow_type;
857 memcpy(&fsc->fs.h_u, &spec->h_u, sizeof(spec->h_u));
858 memcpy(&fsc->fs.m_u, &spec->m_u, sizeof(spec->m_u));
860 fsc->fs.vlan_tag = spec->vlan_tag;
861 fsc->fs.vlan_tag_mask = spec->vlan_tag_mask;
862 fsc->fs.data = spec->data;
863 fsc->fs.data_mask = spec->data_mask;
864 fsc->fs.action = spec->action;
866 /* add to the list */
867 list_add_tail_rcu(&fsc->list, &list->list);
872 * ethtool does not (or did not) set masks for flow parameters that are
873 * not specified, so if both value and mask are 0 then this must be
874 * treated as equivalent to a mask with all bits set. Implement that
875 * here rather than in drivers.
877 static void rx_ntuple_fix_masks(struct ethtool_rx_ntuple_flow_spec *fs)
879 struct ethtool_tcpip4_spec *entry = &fs->h_u.tcp_ip4_spec;
880 struct ethtool_tcpip4_spec *mask = &fs->m_u.tcp_ip4_spec;
882 if (fs->flow_type != TCP_V4_FLOW &&
883 fs->flow_type != UDP_V4_FLOW &&
884 fs->flow_type != SCTP_V4_FLOW)
887 if (!(entry->ip4src | mask->ip4src))
888 mask->ip4src = htonl(0xffffffff);
889 if (!(entry->ip4dst | mask->ip4dst))
890 mask->ip4dst = htonl(0xffffffff);
891 if (!(entry->psrc | mask->psrc))
892 mask->psrc = htons(0xffff);
893 if (!(entry->pdst | mask->pdst))
894 mask->pdst = htons(0xffff);
895 if (!(entry->tos | mask->tos))
897 if (!(fs->vlan_tag | fs->vlan_tag_mask))
898 fs->vlan_tag_mask = 0xffff;
899 if (!(fs->data | fs->data_mask))
900 fs->data_mask = 0xffffffffffffffffULL;
903 static noinline_for_stack int ethtool_set_rx_ntuple(struct net_device *dev,
904 void __user *useraddr)
906 struct ethtool_rx_ntuple cmd;
907 const struct ethtool_ops *ops = dev->ethtool_ops;
908 struct ethtool_rx_ntuple_flow_spec_container *fsc = NULL;
911 if (!(dev->features & NETIF_F_NTUPLE))
914 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
917 rx_ntuple_fix_masks(&cmd.fs);
920 * Cache filter in dev struct for GET operation only if
921 * the underlying driver doesn't have its own GET operation, and
922 * only if the filter was added successfully. First make sure we
923 * can allocate the filter, then continue if successful.
925 if (!ops->get_rx_ntuple) {
926 fsc = kmalloc(sizeof(*fsc), GFP_ATOMIC);
931 ret = ops->set_rx_ntuple(dev, &cmd);
937 if (!ops->get_rx_ntuple)
938 __rx_ntuple_filter_add(&dev->ethtool_ntuple_list, &cmd.fs, fsc);
943 static int ethtool_get_rx_ntuple(struct net_device *dev, void __user *useraddr)
945 struct ethtool_gstrings gstrings;
946 const struct ethtool_ops *ops = dev->ethtool_ops;
947 struct ethtool_rx_ntuple_flow_spec_container *fsc;
950 int ret, i, num_strings = 0;
952 if (!ops->get_sset_count)
955 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
958 ret = ops->get_sset_count(dev, gstrings.string_set);
964 data = kzalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
968 if (ops->get_rx_ntuple) {
969 /* driver-specific filter grab */
970 ret = ops->get_rx_ntuple(dev, gstrings.string_set, data);
974 /* default ethtool filter grab */
977 list_for_each_entry(fsc, &dev->ethtool_ntuple_list.list, list) {
978 sprintf(p, "Filter %d:\n", i);
979 p += ETH_GSTRING_LEN;
982 switch (fsc->fs.flow_type) {
984 sprintf(p, "\tFlow Type: TCP\n");
985 p += ETH_GSTRING_LEN;
989 sprintf(p, "\tFlow Type: UDP\n");
990 p += ETH_GSTRING_LEN;
994 sprintf(p, "\tFlow Type: SCTP\n");
995 p += ETH_GSTRING_LEN;
999 sprintf(p, "\tFlow Type: AH ESP\n");
1000 p += ETH_GSTRING_LEN;
1004 sprintf(p, "\tFlow Type: ESP\n");
1005 p += ETH_GSTRING_LEN;
1009 sprintf(p, "\tFlow Type: Raw IP\n");
1010 p += ETH_GSTRING_LEN;
1014 sprintf(p, "\tFlow Type: IPv4\n");
1015 p += ETH_GSTRING_LEN;
1019 sprintf(p, "\tFlow Type: Unknown\n");
1020 p += ETH_GSTRING_LEN;
1022 goto unknown_filter;
1025 /* now the rest of the filters */
1026 switch (fsc->fs.flow_type) {
1030 sprintf(p, "\tSrc IP addr: 0x%x\n",
1031 fsc->fs.h_u.tcp_ip4_spec.ip4src);
1032 p += ETH_GSTRING_LEN;
1034 sprintf(p, "\tSrc IP mask: 0x%x\n",
1035 fsc->fs.m_u.tcp_ip4_spec.ip4src);
1036 p += ETH_GSTRING_LEN;
1038 sprintf(p, "\tDest IP addr: 0x%x\n",
1039 fsc->fs.h_u.tcp_ip4_spec.ip4dst);
1040 p += ETH_GSTRING_LEN;
1042 sprintf(p, "\tDest IP mask: 0x%x\n",
1043 fsc->fs.m_u.tcp_ip4_spec.ip4dst);
1044 p += ETH_GSTRING_LEN;
1046 sprintf(p, "\tSrc Port: %d, mask: 0x%x\n",
1047 fsc->fs.h_u.tcp_ip4_spec.psrc,
1048 fsc->fs.m_u.tcp_ip4_spec.psrc);
1049 p += ETH_GSTRING_LEN;
1051 sprintf(p, "\tDest Port: %d, mask: 0x%x\n",
1052 fsc->fs.h_u.tcp_ip4_spec.pdst,
1053 fsc->fs.m_u.tcp_ip4_spec.pdst);
1054 p += ETH_GSTRING_LEN;
1056 sprintf(p, "\tTOS: %d, mask: 0x%x\n",
1057 fsc->fs.h_u.tcp_ip4_spec.tos,
1058 fsc->fs.m_u.tcp_ip4_spec.tos);
1059 p += ETH_GSTRING_LEN;
1062 case AH_ESP_V4_FLOW:
1064 sprintf(p, "\tSrc IP addr: 0x%x\n",
1065 fsc->fs.h_u.ah_ip4_spec.ip4src);
1066 p += ETH_GSTRING_LEN;
1068 sprintf(p, "\tSrc IP mask: 0x%x\n",
1069 fsc->fs.m_u.ah_ip4_spec.ip4src);
1070 p += ETH_GSTRING_LEN;
1072 sprintf(p, "\tDest IP addr: 0x%x\n",
1073 fsc->fs.h_u.ah_ip4_spec.ip4dst);
1074 p += ETH_GSTRING_LEN;
1076 sprintf(p, "\tDest IP mask: 0x%x\n",
1077 fsc->fs.m_u.ah_ip4_spec.ip4dst);
1078 p += ETH_GSTRING_LEN;
1080 sprintf(p, "\tSPI: %d, mask: 0x%x\n",
1081 fsc->fs.h_u.ah_ip4_spec.spi,
1082 fsc->fs.m_u.ah_ip4_spec.spi);
1083 p += ETH_GSTRING_LEN;
1085 sprintf(p, "\tTOS: %d, mask: 0x%x\n",
1086 fsc->fs.h_u.ah_ip4_spec.tos,
1087 fsc->fs.m_u.ah_ip4_spec.tos);
1088 p += ETH_GSTRING_LEN;
1092 sprintf(p, "\tSrc IP addr: 0x%x\n",
1093 fsc->fs.h_u.usr_ip4_spec.ip4src);
1094 p += ETH_GSTRING_LEN;
1096 sprintf(p, "\tSrc IP mask: 0x%x\n",
1097 fsc->fs.m_u.usr_ip4_spec.ip4src);
1098 p += ETH_GSTRING_LEN;
1100 sprintf(p, "\tDest IP addr: 0x%x\n",
1101 fsc->fs.h_u.usr_ip4_spec.ip4dst);
1102 p += ETH_GSTRING_LEN;
1104 sprintf(p, "\tDest IP mask: 0x%x\n",
1105 fsc->fs.m_u.usr_ip4_spec.ip4dst);
1106 p += ETH_GSTRING_LEN;
1110 sprintf(p, "\tSrc IP addr: 0x%x\n",
1111 fsc->fs.h_u.usr_ip4_spec.ip4src);
1112 p += ETH_GSTRING_LEN;
1114 sprintf(p, "\tSrc IP mask: 0x%x\n",
1115 fsc->fs.m_u.usr_ip4_spec.ip4src);
1116 p += ETH_GSTRING_LEN;
1118 sprintf(p, "\tDest IP addr: 0x%x\n",
1119 fsc->fs.h_u.usr_ip4_spec.ip4dst);
1120 p += ETH_GSTRING_LEN;
1122 sprintf(p, "\tDest IP mask: 0x%x\n",
1123 fsc->fs.m_u.usr_ip4_spec.ip4dst);
1124 p += ETH_GSTRING_LEN;
1126 sprintf(p, "\tL4 bytes: 0x%x, mask: 0x%x\n",
1127 fsc->fs.h_u.usr_ip4_spec.l4_4_bytes,
1128 fsc->fs.m_u.usr_ip4_spec.l4_4_bytes);
1129 p += ETH_GSTRING_LEN;
1131 sprintf(p, "\tTOS: %d, mask: 0x%x\n",
1132 fsc->fs.h_u.usr_ip4_spec.tos,
1133 fsc->fs.m_u.usr_ip4_spec.tos);
1134 p += ETH_GSTRING_LEN;
1136 sprintf(p, "\tIP Version: %d, mask: 0x%x\n",
1137 fsc->fs.h_u.usr_ip4_spec.ip_ver,
1138 fsc->fs.m_u.usr_ip4_spec.ip_ver);
1139 p += ETH_GSTRING_LEN;
1141 sprintf(p, "\tProtocol: %d, mask: 0x%x\n",
1142 fsc->fs.h_u.usr_ip4_spec.proto,
1143 fsc->fs.m_u.usr_ip4_spec.proto);
1144 p += ETH_GSTRING_LEN;
1148 sprintf(p, "\tVLAN: %d, mask: 0x%x\n",
1149 fsc->fs.vlan_tag, fsc->fs.vlan_tag_mask);
1150 p += ETH_GSTRING_LEN;
1152 sprintf(p, "\tUser-defined: 0x%Lx\n", fsc->fs.data);
1153 p += ETH_GSTRING_LEN;
1155 sprintf(p, "\tUser-defined mask: 0x%Lx\n", fsc->fs.data_mask);
1156 p += ETH_GSTRING_LEN;
1158 if (fsc->fs.action == ETHTOOL_RXNTUPLE_ACTION_DROP)
1159 sprintf(p, "\tAction: Drop\n");
1161 sprintf(p, "\tAction: Direct to queue %d\n",
1163 p += ETH_GSTRING_LEN;
1169 /* indicate to userspace how many strings we actually have */
1170 gstrings.len = num_strings;
1172 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1174 useraddr += sizeof(gstrings);
1175 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1184 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
1186 struct ethtool_regs regs;
1187 const struct ethtool_ops *ops = dev->ethtool_ops;
1191 if (!ops->get_regs || !ops->get_regs_len)
1194 if (copy_from_user(®s, useraddr, sizeof(regs)))
1197 reglen = ops->get_regs_len(dev);
1198 if (regs.len > reglen)
1201 regbuf = vzalloc(reglen);
1205 ops->get_regs(dev, ®s, regbuf);
1208 if (copy_to_user(useraddr, ®s, sizeof(regs)))
1210 useraddr += offsetof(struct ethtool_regs, data);
1211 if (copy_to_user(useraddr, regbuf, regs.len))
1220 static int ethtool_reset(struct net_device *dev, char __user *useraddr)
1222 struct ethtool_value reset;
1225 if (!dev->ethtool_ops->reset)
1228 if (copy_from_user(&reset, useraddr, sizeof(reset)))
1231 ret = dev->ethtool_ops->reset(dev, &reset.data);
1235 if (copy_to_user(useraddr, &reset, sizeof(reset)))
1240 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
1242 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
1244 if (!dev->ethtool_ops->get_wol)
1247 dev->ethtool_ops->get_wol(dev, &wol);
1249 if (copy_to_user(useraddr, &wol, sizeof(wol)))
1254 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
1256 struct ethtool_wolinfo wol;
1258 if (!dev->ethtool_ops->set_wol)
1261 if (copy_from_user(&wol, useraddr, sizeof(wol)))
1264 return dev->ethtool_ops->set_wol(dev, &wol);
1267 static int ethtool_nway_reset(struct net_device *dev)
1269 if (!dev->ethtool_ops->nway_reset)
1272 return dev->ethtool_ops->nway_reset(dev);
1275 static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
1277 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
1279 if (!dev->ethtool_ops->get_link)
1282 edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
1284 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1289 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
1291 struct ethtool_eeprom eeprom;
1292 const struct ethtool_ops *ops = dev->ethtool_ops;
1293 void __user *userbuf = useraddr + sizeof(eeprom);
1294 u32 bytes_remaining;
1298 if (!ops->get_eeprom || !ops->get_eeprom_len)
1301 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1304 /* Check for wrap and zero */
1305 if (eeprom.offset + eeprom.len <= eeprom.offset)
1308 /* Check for exceeding total eeprom len */
1309 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1312 data = kmalloc(PAGE_SIZE, GFP_USER);
1316 bytes_remaining = eeprom.len;
1317 while (bytes_remaining > 0) {
1318 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1320 ret = ops->get_eeprom(dev, &eeprom, data);
1323 if (copy_to_user(userbuf, data, eeprom.len)) {
1327 userbuf += eeprom.len;
1328 eeprom.offset += eeprom.len;
1329 bytes_remaining -= eeprom.len;
1332 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
1333 eeprom.offset -= eeprom.len;
1334 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
1341 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
1343 struct ethtool_eeprom eeprom;
1344 const struct ethtool_ops *ops = dev->ethtool_ops;
1345 void __user *userbuf = useraddr + sizeof(eeprom);
1346 u32 bytes_remaining;
1350 if (!ops->set_eeprom || !ops->get_eeprom_len)
1353 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1356 /* Check for wrap and zero */
1357 if (eeprom.offset + eeprom.len <= eeprom.offset)
1360 /* Check for exceeding total eeprom len */
1361 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1364 data = kmalloc(PAGE_SIZE, GFP_USER);
1368 bytes_remaining = eeprom.len;
1369 while (bytes_remaining > 0) {
1370 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1372 if (copy_from_user(data, userbuf, eeprom.len)) {
1376 ret = ops->set_eeprom(dev, &eeprom, data);
1379 userbuf += eeprom.len;
1380 eeprom.offset += eeprom.len;
1381 bytes_remaining -= eeprom.len;
1388 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1389 void __user *useraddr)
1391 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1393 if (!dev->ethtool_ops->get_coalesce)
1396 dev->ethtool_ops->get_coalesce(dev, &coalesce);
1398 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1403 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1404 void __user *useraddr)
1406 struct ethtool_coalesce coalesce;
1408 if (!dev->ethtool_ops->set_coalesce)
1411 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1414 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
1417 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1419 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1421 if (!dev->ethtool_ops->get_ringparam)
1424 dev->ethtool_ops->get_ringparam(dev, &ringparam);
1426 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1431 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1433 struct ethtool_ringparam ringparam;
1435 if (!dev->ethtool_ops->set_ringparam)
1438 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1441 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
1444 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1446 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
1448 if (!dev->ethtool_ops->get_pauseparam)
1451 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1453 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1458 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1460 struct ethtool_pauseparam pauseparam;
1462 if (!dev->ethtool_ops->set_pauseparam)
1465 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1468 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1471 static int __ethtool_set_sg(struct net_device *dev, u32 data)
1475 if (!dev->ethtool_ops->set_sg)
1478 if (data && !(dev->features & NETIF_F_ALL_CSUM))
1481 if (!data && dev->ethtool_ops->set_tso) {
1482 err = dev->ethtool_ops->set_tso(dev, 0);
1487 if (!data && dev->ethtool_ops->set_ufo) {
1488 err = dev->ethtool_ops->set_ufo(dev, 0);
1492 return dev->ethtool_ops->set_sg(dev, data);
1495 static int __ethtool_set_tx_csum(struct net_device *dev, u32 data)
1499 if (!dev->ethtool_ops->set_tx_csum)
1502 if (!data && dev->ethtool_ops->set_sg) {
1503 err = __ethtool_set_sg(dev, 0);
1508 return dev->ethtool_ops->set_tx_csum(dev, data);
1511 static int __ethtool_set_rx_csum(struct net_device *dev, u32 data)
1513 if (!dev->ethtool_ops->set_rx_csum)
1517 dev->features &= ~NETIF_F_GRO;
1519 return dev->ethtool_ops->set_rx_csum(dev, data);
1522 static int __ethtool_set_tso(struct net_device *dev, u32 data)
1524 if (!dev->ethtool_ops->set_tso)
1527 if (data && !(dev->features & NETIF_F_SG))
1530 return dev->ethtool_ops->set_tso(dev, data);
1533 static int __ethtool_set_ufo(struct net_device *dev, u32 data)
1535 if (!dev->ethtool_ops->set_ufo)
1537 if (data && !(dev->features & NETIF_F_SG))
1539 if (data && !((dev->features & NETIF_F_GEN_CSUM) ||
1540 (dev->features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))
1541 == (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM)))
1543 return dev->ethtool_ops->set_ufo(dev, data);
1546 static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1548 struct ethtool_test test;
1549 const struct ethtool_ops *ops = dev->ethtool_ops;
1553 if (!ops->self_test || !ops->get_sset_count)
1556 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
1559 WARN_ON(test_len == 0);
1561 if (copy_from_user(&test, useraddr, sizeof(test)))
1564 test.len = test_len;
1565 data = kmalloc(test_len * sizeof(u64), GFP_USER);
1569 ops->self_test(dev, &test, data);
1572 if (copy_to_user(useraddr, &test, sizeof(test)))
1574 useraddr += sizeof(test);
1575 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1584 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1586 struct ethtool_gstrings gstrings;
1590 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1593 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
1599 data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
1603 __ethtool_get_strings(dev, gstrings.string_set, data);
1606 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1608 useraddr += sizeof(gstrings);
1609 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1618 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1620 struct ethtool_value id;
1622 if (!dev->ethtool_ops->phys_id)
1625 if (copy_from_user(&id, useraddr, sizeof(id)))
1628 return dev->ethtool_ops->phys_id(dev, id.data);
1631 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1633 struct ethtool_stats stats;
1634 const struct ethtool_ops *ops = dev->ethtool_ops;
1638 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1641 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
1644 WARN_ON(n_stats == 0);
1646 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1649 stats.n_stats = n_stats;
1650 data = kmalloc(n_stats * sizeof(u64), GFP_USER);
1654 ops->get_ethtool_stats(dev, &stats, data);
1657 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1659 useraddr += sizeof(stats);
1660 if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
1669 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
1671 struct ethtool_perm_addr epaddr;
1673 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
1676 if (epaddr.size < dev->addr_len)
1678 epaddr.size = dev->addr_len;
1680 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
1682 useraddr += sizeof(epaddr);
1683 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
1688 static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
1689 u32 cmd, u32 (*actor)(struct net_device *))
1691 struct ethtool_value edata = { .cmd = cmd };
1696 edata.data = actor(dev);
1698 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1703 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
1704 void (*actor)(struct net_device *, u32))
1706 struct ethtool_value edata;
1711 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1714 actor(dev, edata.data);
1718 static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
1719 int (*actor)(struct net_device *, u32))
1721 struct ethtool_value edata;
1726 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1729 return actor(dev, edata.data);
1732 static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
1733 char __user *useraddr)
1735 struct ethtool_flash efl;
1737 if (copy_from_user(&efl, useraddr, sizeof(efl)))
1740 if (!dev->ethtool_ops->flash_device)
1743 return dev->ethtool_ops->flash_device(dev, &efl);
1746 /* The main entry point in this file. Called from net/core/dev.c */
1748 int dev_ethtool(struct net *net, struct ifreq *ifr)
1750 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
1751 void __user *useraddr = ifr->ifr_data;
1756 if (!dev || !netif_device_present(dev))
1759 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd)))
1762 if (!dev->ethtool_ops) {
1763 /* ETHTOOL_GDRVINFO does not require any driver support.
1764 * It is also unprivileged and does not change anything,
1765 * so we can take a shortcut to it. */
1766 if (ethcmd == ETHTOOL_GDRVINFO)
1767 return ethtool_get_drvinfo(dev, useraddr);
1772 /* Allow some commands to be done by anyone */
1775 case ETHTOOL_GDRVINFO:
1776 case ETHTOOL_GMSGLVL:
1777 case ETHTOOL_GCOALESCE:
1778 case ETHTOOL_GRINGPARAM:
1779 case ETHTOOL_GPAUSEPARAM:
1780 case ETHTOOL_GRXCSUM:
1781 case ETHTOOL_GTXCSUM:
1783 case ETHTOOL_GSTRINGS:
1785 case ETHTOOL_GPERMADDR:
1789 case ETHTOOL_GFLAGS:
1790 case ETHTOOL_GPFLAGS:
1792 case ETHTOOL_GRXRINGS:
1793 case ETHTOOL_GRXCLSRLCNT:
1794 case ETHTOOL_GRXCLSRULE:
1795 case ETHTOOL_GRXCLSRLALL:
1796 case ETHTOOL_GFEATURES:
1799 if (!capable(CAP_NET_ADMIN))
1803 if (dev->ethtool_ops->begin) {
1804 rc = dev->ethtool_ops->begin(dev);
1808 old_features = dev->features;
1812 rc = ethtool_get_settings(dev, useraddr);
1815 rc = ethtool_set_settings(dev, useraddr);
1817 case ETHTOOL_GDRVINFO:
1818 rc = ethtool_get_drvinfo(dev, useraddr);
1821 rc = ethtool_get_regs(dev, useraddr);
1824 rc = ethtool_get_wol(dev, useraddr);
1827 rc = ethtool_set_wol(dev, useraddr);
1829 case ETHTOOL_GMSGLVL:
1830 rc = ethtool_get_value(dev, useraddr, ethcmd,
1831 dev->ethtool_ops->get_msglevel);
1833 case ETHTOOL_SMSGLVL:
1834 rc = ethtool_set_value_void(dev, useraddr,
1835 dev->ethtool_ops->set_msglevel);
1837 case ETHTOOL_NWAY_RST:
1838 rc = ethtool_nway_reset(dev);
1841 rc = ethtool_get_link(dev, useraddr);
1843 case ETHTOOL_GEEPROM:
1844 rc = ethtool_get_eeprom(dev, useraddr);
1846 case ETHTOOL_SEEPROM:
1847 rc = ethtool_set_eeprom(dev, useraddr);
1849 case ETHTOOL_GCOALESCE:
1850 rc = ethtool_get_coalesce(dev, useraddr);
1852 case ETHTOOL_SCOALESCE:
1853 rc = ethtool_set_coalesce(dev, useraddr);
1855 case ETHTOOL_GRINGPARAM:
1856 rc = ethtool_get_ringparam(dev, useraddr);
1858 case ETHTOOL_SRINGPARAM:
1859 rc = ethtool_set_ringparam(dev, useraddr);
1861 case ETHTOOL_GPAUSEPARAM:
1862 rc = ethtool_get_pauseparam(dev, useraddr);
1864 case ETHTOOL_SPAUSEPARAM:
1865 rc = ethtool_set_pauseparam(dev, useraddr);
1868 rc = ethtool_self_test(dev, useraddr);
1870 case ETHTOOL_GSTRINGS:
1871 rc = ethtool_get_strings(dev, useraddr);
1873 case ETHTOOL_PHYS_ID:
1874 rc = ethtool_phys_id(dev, useraddr);
1876 case ETHTOOL_GSTATS:
1877 rc = ethtool_get_stats(dev, useraddr);
1879 case ETHTOOL_GPERMADDR:
1880 rc = ethtool_get_perm_addr(dev, useraddr);
1882 case ETHTOOL_GFLAGS:
1883 rc = ethtool_get_value(dev, useraddr, ethcmd,
1884 (dev->ethtool_ops->get_flags ?
1885 dev->ethtool_ops->get_flags :
1886 ethtool_op_get_flags));
1888 case ETHTOOL_SFLAGS:
1889 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
1891 case ETHTOOL_GPFLAGS:
1892 rc = ethtool_get_value(dev, useraddr, ethcmd,
1893 dev->ethtool_ops->get_priv_flags);
1895 case ETHTOOL_SPFLAGS:
1896 rc = ethtool_set_value(dev, useraddr,
1897 dev->ethtool_ops->set_priv_flags);
1900 case ETHTOOL_GRXRINGS:
1901 case ETHTOOL_GRXCLSRLCNT:
1902 case ETHTOOL_GRXCLSRULE:
1903 case ETHTOOL_GRXCLSRLALL:
1904 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
1907 case ETHTOOL_SRXCLSRLDEL:
1908 case ETHTOOL_SRXCLSRLINS:
1909 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
1911 case ETHTOOL_FLASHDEV:
1912 rc = ethtool_flash_device(dev, useraddr);
1915 rc = ethtool_reset(dev, useraddr);
1917 case ETHTOOL_SRXNTUPLE:
1918 rc = ethtool_set_rx_ntuple(dev, useraddr);
1920 case ETHTOOL_GRXNTUPLE:
1921 rc = ethtool_get_rx_ntuple(dev, useraddr);
1923 case ETHTOOL_GSSET_INFO:
1924 rc = ethtool_get_sset_info(dev, useraddr);
1926 case ETHTOOL_GRXFHINDIR:
1927 rc = ethtool_get_rxfh_indir(dev, useraddr);
1929 case ETHTOOL_SRXFHINDIR:
1930 rc = ethtool_set_rxfh_indir(dev, useraddr);
1932 case ETHTOOL_GFEATURES:
1933 rc = ethtool_get_features(dev, useraddr);
1935 case ETHTOOL_SFEATURES:
1936 rc = ethtool_set_features(dev, useraddr);
1938 case ETHTOOL_GTXCSUM:
1939 case ETHTOOL_GRXCSUM:
1945 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
1947 case ETHTOOL_STXCSUM:
1948 case ETHTOOL_SRXCSUM:
1954 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
1960 if (dev->ethtool_ops->complete)
1961 dev->ethtool_ops->complete(dev);
1963 if (old_features != dev->features)
1964 netdev_features_change(dev);