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_rx_csum(struct net_device *dev)
39 return (dev->features & NETIF_F_ALL_CSUM) != 0;
41 EXPORT_SYMBOL(ethtool_op_get_rx_csum);
43 u32 ethtool_op_get_tx_csum(struct net_device *dev)
45 return (dev->features & NETIF_F_ALL_CSUM) != 0;
47 EXPORT_SYMBOL(ethtool_op_get_tx_csum);
49 int ethtool_op_set_tx_csum(struct net_device *dev, u32 data)
52 dev->features |= NETIF_F_IP_CSUM;
54 dev->features &= ~NETIF_F_IP_CSUM;
59 int ethtool_op_set_tx_hw_csum(struct net_device *dev, u32 data)
62 dev->features |= NETIF_F_HW_CSUM;
64 dev->features &= ~NETIF_F_HW_CSUM;
68 EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum);
70 int ethtool_op_set_tx_ipv6_csum(struct net_device *dev, u32 data)
73 dev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
75 dev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
79 EXPORT_SYMBOL(ethtool_op_set_tx_ipv6_csum);
81 u32 ethtool_op_get_sg(struct net_device *dev)
83 return (dev->features & NETIF_F_SG) != 0;
85 EXPORT_SYMBOL(ethtool_op_get_sg);
87 int ethtool_op_set_sg(struct net_device *dev, u32 data)
90 dev->features |= NETIF_F_SG;
92 dev->features &= ~NETIF_F_SG;
96 EXPORT_SYMBOL(ethtool_op_set_sg);
98 u32 ethtool_op_get_tso(struct net_device *dev)
100 return (dev->features & NETIF_F_TSO) != 0;
102 EXPORT_SYMBOL(ethtool_op_get_tso);
104 int ethtool_op_set_tso(struct net_device *dev, u32 data)
107 dev->features |= NETIF_F_TSO;
109 dev->features &= ~NETIF_F_TSO;
113 EXPORT_SYMBOL(ethtool_op_set_tso);
115 u32 ethtool_op_get_ufo(struct net_device *dev)
117 return (dev->features & NETIF_F_UFO) != 0;
119 EXPORT_SYMBOL(ethtool_op_get_ufo);
121 int ethtool_op_set_ufo(struct net_device *dev, u32 data)
124 dev->features |= NETIF_F_UFO;
126 dev->features &= ~NETIF_F_UFO;
129 EXPORT_SYMBOL(ethtool_op_set_ufo);
131 /* the following list of flags are the same as their associated
132 * NETIF_F_xxx values in include/linux/netdevice.h
134 static const u32 flags_dup_features =
135 (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | ETH_FLAG_NTUPLE |
138 u32 ethtool_op_get_flags(struct net_device *dev)
140 /* in the future, this function will probably contain additional
141 * handling for flags which are not so easily handled
142 * by a simple masking operation
145 return dev->features & flags_dup_features;
147 EXPORT_SYMBOL(ethtool_op_get_flags);
149 int ethtool_op_set_flags(struct net_device *dev, u32 data, u32 supported)
151 if (data & ~supported)
154 dev->features = ((dev->features & ~flags_dup_features) |
155 (data & flags_dup_features));
158 EXPORT_SYMBOL(ethtool_op_set_flags);
160 void ethtool_ntuple_flush(struct net_device *dev)
162 struct ethtool_rx_ntuple_flow_spec_container *fsc, *f;
164 list_for_each_entry_safe(fsc, f, &dev->ethtool_ntuple_list.list, list) {
165 list_del(&fsc->list);
168 dev->ethtool_ntuple_list.count = 0;
170 EXPORT_SYMBOL(ethtool_ntuple_flush);
172 /* Handlers for each ethtool command */
174 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
176 struct ethtool_cmd cmd = { .cmd = ETHTOOL_GSET };
179 if (!dev->ethtool_ops->get_settings)
182 err = dev->ethtool_ops->get_settings(dev, &cmd);
186 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
191 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
193 struct ethtool_cmd cmd;
195 if (!dev->ethtool_ops->set_settings)
198 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
201 return dev->ethtool_ops->set_settings(dev, &cmd);
204 static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
205 void __user *useraddr)
207 struct ethtool_drvinfo info;
208 const struct ethtool_ops *ops = dev->ethtool_ops;
210 memset(&info, 0, sizeof(info));
211 info.cmd = ETHTOOL_GDRVINFO;
212 if (ops && ops->get_drvinfo) {
213 ops->get_drvinfo(dev, &info);
214 } else if (dev->dev.parent && dev->dev.parent->driver) {
215 strlcpy(info.bus_info, dev_name(dev->dev.parent),
216 sizeof(info.bus_info));
217 strlcpy(info.driver, dev->dev.parent->driver->name,
218 sizeof(info.driver));
224 * this method of obtaining string set info is deprecated;
225 * Use ETHTOOL_GSSET_INFO instead.
227 if (ops && ops->get_sset_count) {
230 rc = ops->get_sset_count(dev, ETH_SS_TEST);
232 info.testinfo_len = rc;
233 rc = ops->get_sset_count(dev, ETH_SS_STATS);
236 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
238 info.n_priv_flags = rc;
240 if (ops && ops->get_regs_len)
241 info.regdump_len = ops->get_regs_len(dev);
242 if (ops && ops->get_eeprom_len)
243 info.eedump_len = ops->get_eeprom_len(dev);
245 if (copy_to_user(useraddr, &info, sizeof(info)))
250 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
251 void __user *useraddr)
253 struct ethtool_sset_info info;
254 const struct ethtool_ops *ops = dev->ethtool_ops;
256 int i, idx = 0, n_bits = 0, ret, rc;
257 u32 *info_buf = NULL;
259 if (!ops->get_sset_count)
262 if (copy_from_user(&info, useraddr, sizeof(info)))
265 /* store copy of mask, because we zero struct later on */
266 sset_mask = info.sset_mask;
270 /* calculate size of return buffer */
271 n_bits = hweight64(sset_mask);
273 memset(&info, 0, sizeof(info));
274 info.cmd = ETHTOOL_GSSET_INFO;
276 info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
281 * fill return buffer based on input bitmask and successful
282 * get_sset_count return
284 for (i = 0; i < 64; i++) {
285 if (!(sset_mask & (1ULL << i)))
288 rc = ops->get_sset_count(dev, i);
290 info.sset_mask |= (1ULL << i);
291 info_buf[idx++] = rc;
296 if (copy_to_user(useraddr, &info, sizeof(info)))
299 useraddr += offsetof(struct ethtool_sset_info, data);
300 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
310 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
311 u32 cmd, void __user *useraddr)
313 struct ethtool_rxnfc info;
314 size_t info_size = sizeof(info);
316 if (!dev->ethtool_ops->set_rxnfc)
319 /* struct ethtool_rxnfc was originally defined for
320 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
321 * members. User-space might still be using that
323 if (cmd == ETHTOOL_SRXFH)
324 info_size = (offsetof(struct ethtool_rxnfc, data) +
327 if (copy_from_user(&info, useraddr, info_size))
330 return dev->ethtool_ops->set_rxnfc(dev, &info);
333 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
334 u32 cmd, void __user *useraddr)
336 struct ethtool_rxnfc info;
337 size_t info_size = sizeof(info);
338 const struct ethtool_ops *ops = dev->ethtool_ops;
340 void *rule_buf = NULL;
345 /* struct ethtool_rxnfc was originally defined for
346 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
347 * members. User-space might still be using that
349 if (cmd == ETHTOOL_GRXFH)
350 info_size = (offsetof(struct ethtool_rxnfc, data) +
353 if (copy_from_user(&info, useraddr, info_size))
356 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
357 if (info.rule_cnt > 0) {
358 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
359 rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
366 ret = ops->get_rxnfc(dev, &info, rule_buf);
371 if (copy_to_user(useraddr, &info, info_size))
375 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
376 if (copy_to_user(useraddr, rule_buf,
377 info.rule_cnt * sizeof(u32)))
388 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
389 void __user *useraddr)
391 struct ethtool_rxfh_indir *indir;
396 if (!dev->ethtool_ops->get_rxfh_indir)
399 if (copy_from_user(&table_size,
400 useraddr + offsetof(struct ethtool_rxfh_indir, size),
405 (KMALLOC_MAX_SIZE - sizeof(*indir)) / sizeof(*indir->ring_index))
407 full_size = sizeof(*indir) + sizeof(*indir->ring_index) * table_size;
408 indir = kzalloc(full_size, GFP_USER);
412 indir->cmd = ETHTOOL_GRXFHINDIR;
413 indir->size = table_size;
414 ret = dev->ethtool_ops->get_rxfh_indir(dev, indir);
418 if (copy_to_user(useraddr, indir, full_size))
426 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
427 void __user *useraddr)
429 struct ethtool_rxfh_indir *indir;
434 if (!dev->ethtool_ops->set_rxfh_indir)
437 if (copy_from_user(&table_size,
438 useraddr + offsetof(struct ethtool_rxfh_indir, size),
443 (KMALLOC_MAX_SIZE - sizeof(*indir)) / sizeof(*indir->ring_index))
445 full_size = sizeof(*indir) + sizeof(*indir->ring_index) * table_size;
446 indir = kmalloc(full_size, GFP_USER);
450 if (copy_from_user(indir, useraddr, full_size)) {
455 ret = dev->ethtool_ops->set_rxfh_indir(dev, indir);
462 static void __rx_ntuple_filter_add(struct ethtool_rx_ntuple_list *list,
463 struct ethtool_rx_ntuple_flow_spec *spec,
464 struct ethtool_rx_ntuple_flow_spec_container *fsc)
467 /* don't add filters forever */
468 if (list->count >= ETHTOOL_MAX_NTUPLE_LIST_ENTRY) {
469 /* free the container */
474 /* Copy the whole filter over */
475 fsc->fs.flow_type = spec->flow_type;
476 memcpy(&fsc->fs.h_u, &spec->h_u, sizeof(spec->h_u));
477 memcpy(&fsc->fs.m_u, &spec->m_u, sizeof(spec->m_u));
479 fsc->fs.vlan_tag = spec->vlan_tag;
480 fsc->fs.vlan_tag_mask = spec->vlan_tag_mask;
481 fsc->fs.data = spec->data;
482 fsc->fs.data_mask = spec->data_mask;
483 fsc->fs.action = spec->action;
485 /* add to the list */
486 list_add_tail_rcu(&fsc->list, &list->list);
491 * ethtool does not (or did not) set masks for flow parameters that are
492 * not specified, so if both value and mask are 0 then this must be
493 * treated as equivalent to a mask with all bits set. Implement that
494 * here rather than in drivers.
496 static void rx_ntuple_fix_masks(struct ethtool_rx_ntuple_flow_spec *fs)
498 struct ethtool_tcpip4_spec *entry = &fs->h_u.tcp_ip4_spec;
499 struct ethtool_tcpip4_spec *mask = &fs->m_u.tcp_ip4_spec;
501 if (fs->flow_type != TCP_V4_FLOW &&
502 fs->flow_type != UDP_V4_FLOW &&
503 fs->flow_type != SCTP_V4_FLOW)
506 if (!(entry->ip4src | mask->ip4src))
507 mask->ip4src = htonl(0xffffffff);
508 if (!(entry->ip4dst | mask->ip4dst))
509 mask->ip4dst = htonl(0xffffffff);
510 if (!(entry->psrc | mask->psrc))
511 mask->psrc = htons(0xffff);
512 if (!(entry->pdst | mask->pdst))
513 mask->pdst = htons(0xffff);
514 if (!(entry->tos | mask->tos))
516 if (!(fs->vlan_tag | fs->vlan_tag_mask))
517 fs->vlan_tag_mask = 0xffff;
518 if (!(fs->data | fs->data_mask))
519 fs->data_mask = 0xffffffffffffffffULL;
522 static noinline_for_stack int ethtool_set_rx_ntuple(struct net_device *dev,
523 void __user *useraddr)
525 struct ethtool_rx_ntuple cmd;
526 const struct ethtool_ops *ops = dev->ethtool_ops;
527 struct ethtool_rx_ntuple_flow_spec_container *fsc = NULL;
530 if (!(dev->features & NETIF_F_NTUPLE))
533 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
536 rx_ntuple_fix_masks(&cmd.fs);
539 * Cache filter in dev struct for GET operation only if
540 * the underlying driver doesn't have its own GET operation, and
541 * only if the filter was added successfully. First make sure we
542 * can allocate the filter, then continue if successful.
544 if (!ops->get_rx_ntuple) {
545 fsc = kmalloc(sizeof(*fsc), GFP_ATOMIC);
550 ret = ops->set_rx_ntuple(dev, &cmd);
556 if (!ops->get_rx_ntuple)
557 __rx_ntuple_filter_add(&dev->ethtool_ntuple_list, &cmd.fs, fsc);
562 static int ethtool_get_rx_ntuple(struct net_device *dev, void __user *useraddr)
564 struct ethtool_gstrings gstrings;
565 const struct ethtool_ops *ops = dev->ethtool_ops;
566 struct ethtool_rx_ntuple_flow_spec_container *fsc;
569 int ret, i, num_strings = 0;
571 if (!ops->get_sset_count)
574 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
577 ret = ops->get_sset_count(dev, gstrings.string_set);
583 data = kzalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
587 if (ops->get_rx_ntuple) {
588 /* driver-specific filter grab */
589 ret = ops->get_rx_ntuple(dev, gstrings.string_set, data);
593 /* default ethtool filter grab */
596 list_for_each_entry(fsc, &dev->ethtool_ntuple_list.list, list) {
597 sprintf(p, "Filter %d:\n", i);
598 p += ETH_GSTRING_LEN;
601 switch (fsc->fs.flow_type) {
603 sprintf(p, "\tFlow Type: TCP\n");
604 p += ETH_GSTRING_LEN;
608 sprintf(p, "\tFlow Type: UDP\n");
609 p += ETH_GSTRING_LEN;
613 sprintf(p, "\tFlow Type: SCTP\n");
614 p += ETH_GSTRING_LEN;
618 sprintf(p, "\tFlow Type: AH ESP\n");
619 p += ETH_GSTRING_LEN;
623 sprintf(p, "\tFlow Type: ESP\n");
624 p += ETH_GSTRING_LEN;
628 sprintf(p, "\tFlow Type: Raw IP\n");
629 p += ETH_GSTRING_LEN;
633 sprintf(p, "\tFlow Type: IPv4\n");
634 p += ETH_GSTRING_LEN;
638 sprintf(p, "\tFlow Type: Unknown\n");
639 p += ETH_GSTRING_LEN;
644 /* now the rest of the filters */
645 switch (fsc->fs.flow_type) {
649 sprintf(p, "\tSrc IP addr: 0x%x\n",
650 fsc->fs.h_u.tcp_ip4_spec.ip4src);
651 p += ETH_GSTRING_LEN;
653 sprintf(p, "\tSrc IP mask: 0x%x\n",
654 fsc->fs.m_u.tcp_ip4_spec.ip4src);
655 p += ETH_GSTRING_LEN;
657 sprintf(p, "\tDest IP addr: 0x%x\n",
658 fsc->fs.h_u.tcp_ip4_spec.ip4dst);
659 p += ETH_GSTRING_LEN;
661 sprintf(p, "\tDest IP mask: 0x%x\n",
662 fsc->fs.m_u.tcp_ip4_spec.ip4dst);
663 p += ETH_GSTRING_LEN;
665 sprintf(p, "\tSrc Port: %d, mask: 0x%x\n",
666 fsc->fs.h_u.tcp_ip4_spec.psrc,
667 fsc->fs.m_u.tcp_ip4_spec.psrc);
668 p += ETH_GSTRING_LEN;
670 sprintf(p, "\tDest Port: %d, mask: 0x%x\n",
671 fsc->fs.h_u.tcp_ip4_spec.pdst,
672 fsc->fs.m_u.tcp_ip4_spec.pdst);
673 p += ETH_GSTRING_LEN;
675 sprintf(p, "\tTOS: %d, mask: 0x%x\n",
676 fsc->fs.h_u.tcp_ip4_spec.tos,
677 fsc->fs.m_u.tcp_ip4_spec.tos);
678 p += ETH_GSTRING_LEN;
683 sprintf(p, "\tSrc IP addr: 0x%x\n",
684 fsc->fs.h_u.ah_ip4_spec.ip4src);
685 p += ETH_GSTRING_LEN;
687 sprintf(p, "\tSrc IP mask: 0x%x\n",
688 fsc->fs.m_u.ah_ip4_spec.ip4src);
689 p += ETH_GSTRING_LEN;
691 sprintf(p, "\tDest IP addr: 0x%x\n",
692 fsc->fs.h_u.ah_ip4_spec.ip4dst);
693 p += ETH_GSTRING_LEN;
695 sprintf(p, "\tDest IP mask: 0x%x\n",
696 fsc->fs.m_u.ah_ip4_spec.ip4dst);
697 p += ETH_GSTRING_LEN;
699 sprintf(p, "\tSPI: %d, mask: 0x%x\n",
700 fsc->fs.h_u.ah_ip4_spec.spi,
701 fsc->fs.m_u.ah_ip4_spec.spi);
702 p += ETH_GSTRING_LEN;
704 sprintf(p, "\tTOS: %d, mask: 0x%x\n",
705 fsc->fs.h_u.ah_ip4_spec.tos,
706 fsc->fs.m_u.ah_ip4_spec.tos);
707 p += ETH_GSTRING_LEN;
711 sprintf(p, "\tSrc IP addr: 0x%x\n",
712 fsc->fs.h_u.usr_ip4_spec.ip4src);
713 p += ETH_GSTRING_LEN;
715 sprintf(p, "\tSrc IP mask: 0x%x\n",
716 fsc->fs.m_u.usr_ip4_spec.ip4src);
717 p += ETH_GSTRING_LEN;
719 sprintf(p, "\tDest IP addr: 0x%x\n",
720 fsc->fs.h_u.usr_ip4_spec.ip4dst);
721 p += ETH_GSTRING_LEN;
723 sprintf(p, "\tDest IP mask: 0x%x\n",
724 fsc->fs.m_u.usr_ip4_spec.ip4dst);
725 p += ETH_GSTRING_LEN;
729 sprintf(p, "\tSrc IP addr: 0x%x\n",
730 fsc->fs.h_u.usr_ip4_spec.ip4src);
731 p += ETH_GSTRING_LEN;
733 sprintf(p, "\tSrc IP mask: 0x%x\n",
734 fsc->fs.m_u.usr_ip4_spec.ip4src);
735 p += ETH_GSTRING_LEN;
737 sprintf(p, "\tDest IP addr: 0x%x\n",
738 fsc->fs.h_u.usr_ip4_spec.ip4dst);
739 p += ETH_GSTRING_LEN;
741 sprintf(p, "\tDest IP mask: 0x%x\n",
742 fsc->fs.m_u.usr_ip4_spec.ip4dst);
743 p += ETH_GSTRING_LEN;
745 sprintf(p, "\tL4 bytes: 0x%x, mask: 0x%x\n",
746 fsc->fs.h_u.usr_ip4_spec.l4_4_bytes,
747 fsc->fs.m_u.usr_ip4_spec.l4_4_bytes);
748 p += ETH_GSTRING_LEN;
750 sprintf(p, "\tTOS: %d, mask: 0x%x\n",
751 fsc->fs.h_u.usr_ip4_spec.tos,
752 fsc->fs.m_u.usr_ip4_spec.tos);
753 p += ETH_GSTRING_LEN;
755 sprintf(p, "\tIP Version: %d, mask: 0x%x\n",
756 fsc->fs.h_u.usr_ip4_spec.ip_ver,
757 fsc->fs.m_u.usr_ip4_spec.ip_ver);
758 p += ETH_GSTRING_LEN;
760 sprintf(p, "\tProtocol: %d, mask: 0x%x\n",
761 fsc->fs.h_u.usr_ip4_spec.proto,
762 fsc->fs.m_u.usr_ip4_spec.proto);
763 p += ETH_GSTRING_LEN;
767 sprintf(p, "\tVLAN: %d, mask: 0x%x\n",
768 fsc->fs.vlan_tag, fsc->fs.vlan_tag_mask);
769 p += ETH_GSTRING_LEN;
771 sprintf(p, "\tUser-defined: 0x%Lx\n", fsc->fs.data);
772 p += ETH_GSTRING_LEN;
774 sprintf(p, "\tUser-defined mask: 0x%Lx\n", fsc->fs.data_mask);
775 p += ETH_GSTRING_LEN;
777 if (fsc->fs.action == ETHTOOL_RXNTUPLE_ACTION_DROP)
778 sprintf(p, "\tAction: Drop\n");
780 sprintf(p, "\tAction: Direct to queue %d\n",
782 p += ETH_GSTRING_LEN;
788 /* indicate to userspace how many strings we actually have */
789 gstrings.len = num_strings;
791 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
793 useraddr += sizeof(gstrings);
794 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
803 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
805 struct ethtool_regs regs;
806 const struct ethtool_ops *ops = dev->ethtool_ops;
810 if (!ops->get_regs || !ops->get_regs_len)
813 if (copy_from_user(®s, useraddr, sizeof(regs)))
816 reglen = ops->get_regs_len(dev);
817 if (regs.len > reglen)
820 regbuf = vmalloc(reglen);
824 ops->get_regs(dev, ®s, regbuf);
827 if (copy_to_user(useraddr, ®s, sizeof(regs)))
829 useraddr += offsetof(struct ethtool_regs, data);
830 if (copy_to_user(useraddr, regbuf, regs.len))
839 static int ethtool_reset(struct net_device *dev, char __user *useraddr)
841 struct ethtool_value reset;
844 if (!dev->ethtool_ops->reset)
847 if (copy_from_user(&reset, useraddr, sizeof(reset)))
850 ret = dev->ethtool_ops->reset(dev, &reset.data);
854 if (copy_to_user(useraddr, &reset, sizeof(reset)))
859 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
861 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
863 if (!dev->ethtool_ops->get_wol)
866 dev->ethtool_ops->get_wol(dev, &wol);
868 if (copy_to_user(useraddr, &wol, sizeof(wol)))
873 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
875 struct ethtool_wolinfo wol;
877 if (!dev->ethtool_ops->set_wol)
880 if (copy_from_user(&wol, useraddr, sizeof(wol)))
883 return dev->ethtool_ops->set_wol(dev, &wol);
886 static int ethtool_nway_reset(struct net_device *dev)
888 if (!dev->ethtool_ops->nway_reset)
891 return dev->ethtool_ops->nway_reset(dev);
894 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
896 struct ethtool_eeprom eeprom;
897 const struct ethtool_ops *ops = dev->ethtool_ops;
898 void __user *userbuf = useraddr + sizeof(eeprom);
903 if (!ops->get_eeprom || !ops->get_eeprom_len)
906 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
909 /* Check for wrap and zero */
910 if (eeprom.offset + eeprom.len <= eeprom.offset)
913 /* Check for exceeding total eeprom len */
914 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
917 data = kmalloc(PAGE_SIZE, GFP_USER);
921 bytes_remaining = eeprom.len;
922 while (bytes_remaining > 0) {
923 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
925 ret = ops->get_eeprom(dev, &eeprom, data);
928 if (copy_to_user(userbuf, data, eeprom.len)) {
932 userbuf += eeprom.len;
933 eeprom.offset += eeprom.len;
934 bytes_remaining -= eeprom.len;
937 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
938 eeprom.offset -= eeprom.len;
939 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
946 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
948 struct ethtool_eeprom eeprom;
949 const struct ethtool_ops *ops = dev->ethtool_ops;
950 void __user *userbuf = useraddr + sizeof(eeprom);
955 if (!ops->set_eeprom || !ops->get_eeprom_len)
958 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
961 /* Check for wrap and zero */
962 if (eeprom.offset + eeprom.len <= eeprom.offset)
965 /* Check for exceeding total eeprom len */
966 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
969 data = kmalloc(PAGE_SIZE, GFP_USER);
973 bytes_remaining = eeprom.len;
974 while (bytes_remaining > 0) {
975 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
977 if (copy_from_user(data, userbuf, eeprom.len)) {
981 ret = ops->set_eeprom(dev, &eeprom, data);
984 userbuf += eeprom.len;
985 eeprom.offset += eeprom.len;
986 bytes_remaining -= eeprom.len;
993 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
994 void __user *useraddr)
996 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
998 if (!dev->ethtool_ops->get_coalesce)
1001 dev->ethtool_ops->get_coalesce(dev, &coalesce);
1003 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1008 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1009 void __user *useraddr)
1011 struct ethtool_coalesce coalesce;
1013 if (!dev->ethtool_ops->set_coalesce)
1016 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1019 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
1022 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1024 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1026 if (!dev->ethtool_ops->get_ringparam)
1029 dev->ethtool_ops->get_ringparam(dev, &ringparam);
1031 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1036 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1038 struct ethtool_ringparam ringparam;
1040 if (!dev->ethtool_ops->set_ringparam)
1043 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1046 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
1049 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1051 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
1053 if (!dev->ethtool_ops->get_pauseparam)
1056 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1058 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1063 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1065 struct ethtool_pauseparam pauseparam;
1067 if (!dev->ethtool_ops->set_pauseparam)
1070 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1073 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1076 static int __ethtool_set_sg(struct net_device *dev, u32 data)
1080 if (!data && dev->ethtool_ops->set_tso) {
1081 err = dev->ethtool_ops->set_tso(dev, 0);
1086 if (!data && dev->ethtool_ops->set_ufo) {
1087 err = dev->ethtool_ops->set_ufo(dev, 0);
1091 return dev->ethtool_ops->set_sg(dev, data);
1094 static int ethtool_set_tx_csum(struct net_device *dev, char __user *useraddr)
1096 struct ethtool_value edata;
1099 if (!dev->ethtool_ops->set_tx_csum)
1102 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1105 if (!edata.data && dev->ethtool_ops->set_sg) {
1106 err = __ethtool_set_sg(dev, 0);
1111 return dev->ethtool_ops->set_tx_csum(dev, edata.data);
1113 EXPORT_SYMBOL(ethtool_op_set_tx_csum);
1115 static int ethtool_set_rx_csum(struct net_device *dev, char __user *useraddr)
1117 struct ethtool_value edata;
1119 if (!dev->ethtool_ops->set_rx_csum)
1122 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1125 if (!edata.data && dev->ethtool_ops->set_sg)
1126 dev->features &= ~NETIF_F_GRO;
1128 return dev->ethtool_ops->set_rx_csum(dev, edata.data);
1131 static int ethtool_set_sg(struct net_device *dev, char __user *useraddr)
1133 struct ethtool_value edata;
1135 if (!dev->ethtool_ops->set_sg)
1138 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1142 !(dev->features & NETIF_F_ALL_CSUM))
1145 return __ethtool_set_sg(dev, edata.data);
1148 static int ethtool_set_tso(struct net_device *dev, char __user *useraddr)
1150 struct ethtool_value edata;
1152 if (!dev->ethtool_ops->set_tso)
1155 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1158 if (edata.data && !(dev->features & NETIF_F_SG))
1161 return dev->ethtool_ops->set_tso(dev, edata.data);
1164 static int ethtool_set_ufo(struct net_device *dev, char __user *useraddr)
1166 struct ethtool_value edata;
1168 if (!dev->ethtool_ops->set_ufo)
1170 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1172 if (edata.data && !(dev->features & NETIF_F_SG))
1174 if (edata.data && !((dev->features & NETIF_F_GEN_CSUM) ||
1175 (dev->features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))
1176 == (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM)))
1178 return dev->ethtool_ops->set_ufo(dev, edata.data);
1181 static int ethtool_get_gso(struct net_device *dev, char __user *useraddr)
1183 struct ethtool_value edata = { ETHTOOL_GGSO };
1185 edata.data = dev->features & NETIF_F_GSO;
1186 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1191 static int ethtool_set_gso(struct net_device *dev, char __user *useraddr)
1193 struct ethtool_value edata;
1195 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1198 dev->features |= NETIF_F_GSO;
1200 dev->features &= ~NETIF_F_GSO;
1204 static int ethtool_get_gro(struct net_device *dev, char __user *useraddr)
1206 struct ethtool_value edata = { ETHTOOL_GGRO };
1208 edata.data = dev->features & NETIF_F_GRO;
1209 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1214 static int ethtool_set_gro(struct net_device *dev, char __user *useraddr)
1216 struct ethtool_value edata;
1218 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1222 u32 rxcsum = dev->ethtool_ops->get_rx_csum ?
1223 dev->ethtool_ops->get_rx_csum(dev) :
1224 ethtool_op_get_rx_csum(dev);
1228 dev->features |= NETIF_F_GRO;
1230 dev->features &= ~NETIF_F_GRO;
1235 static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1237 struct ethtool_test test;
1238 const struct ethtool_ops *ops = dev->ethtool_ops;
1242 if (!ops->self_test || !ops->get_sset_count)
1245 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
1248 WARN_ON(test_len == 0);
1250 if (copy_from_user(&test, useraddr, sizeof(test)))
1253 test.len = test_len;
1254 data = kmalloc(test_len * sizeof(u64), GFP_USER);
1258 ops->self_test(dev, &test, data);
1261 if (copy_to_user(useraddr, &test, sizeof(test)))
1263 useraddr += sizeof(test);
1264 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1273 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1275 struct ethtool_gstrings gstrings;
1276 const struct ethtool_ops *ops = dev->ethtool_ops;
1280 if (!ops->get_strings || !ops->get_sset_count)
1283 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1286 ret = ops->get_sset_count(dev, gstrings.string_set);
1292 data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
1296 ops->get_strings(dev, gstrings.string_set, data);
1299 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1301 useraddr += sizeof(gstrings);
1302 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1311 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1313 struct ethtool_value id;
1315 if (!dev->ethtool_ops->phys_id)
1318 if (copy_from_user(&id, useraddr, sizeof(id)))
1321 return dev->ethtool_ops->phys_id(dev, id.data);
1324 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1326 struct ethtool_stats stats;
1327 const struct ethtool_ops *ops = dev->ethtool_ops;
1331 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1334 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
1337 WARN_ON(n_stats == 0);
1339 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1342 stats.n_stats = n_stats;
1343 data = kmalloc(n_stats * sizeof(u64), GFP_USER);
1347 ops->get_ethtool_stats(dev, &stats, data);
1350 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1352 useraddr += sizeof(stats);
1353 if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
1362 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
1364 struct ethtool_perm_addr epaddr;
1366 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
1369 if (epaddr.size < dev->addr_len)
1371 epaddr.size = dev->addr_len;
1373 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
1375 useraddr += sizeof(epaddr);
1376 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
1381 static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
1382 u32 cmd, u32 (*actor)(struct net_device *))
1384 struct ethtool_value edata = { .cmd = cmd };
1389 edata.data = actor(dev);
1391 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1396 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
1397 void (*actor)(struct net_device *, u32))
1399 struct ethtool_value edata;
1404 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1407 actor(dev, edata.data);
1411 static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
1412 int (*actor)(struct net_device *, u32))
1414 struct ethtool_value edata;
1419 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1422 return actor(dev, edata.data);
1425 static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
1426 char __user *useraddr)
1428 struct ethtool_flash efl;
1430 if (copy_from_user(&efl, useraddr, sizeof(efl)))
1433 if (!dev->ethtool_ops->flash_device)
1436 return dev->ethtool_ops->flash_device(dev, &efl);
1439 /* The main entry point in this file. Called from net/core/dev.c */
1441 int dev_ethtool(struct net *net, struct ifreq *ifr)
1443 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
1444 void __user *useraddr = ifr->ifr_data;
1447 unsigned long old_features;
1449 if (!dev || !netif_device_present(dev))
1452 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd)))
1455 if (!dev->ethtool_ops) {
1456 /* ETHTOOL_GDRVINFO does not require any driver support.
1457 * It is also unprivileged and does not change anything,
1458 * so we can take a shortcut to it. */
1459 if (ethcmd == ETHTOOL_GDRVINFO)
1460 return ethtool_get_drvinfo(dev, useraddr);
1465 /* Allow some commands to be done by anyone */
1468 case ETHTOOL_GDRVINFO:
1469 case ETHTOOL_GMSGLVL:
1470 case ETHTOOL_GCOALESCE:
1471 case ETHTOOL_GRINGPARAM:
1472 case ETHTOOL_GPAUSEPARAM:
1473 case ETHTOOL_GRXCSUM:
1474 case ETHTOOL_GTXCSUM:
1476 case ETHTOOL_GSTRINGS:
1478 case ETHTOOL_GPERMADDR:
1482 case ETHTOOL_GFLAGS:
1483 case ETHTOOL_GPFLAGS:
1485 case ETHTOOL_GRXRINGS:
1486 case ETHTOOL_GRXCLSRLCNT:
1487 case ETHTOOL_GRXCLSRULE:
1488 case ETHTOOL_GRXCLSRLALL:
1491 if (!capable(CAP_NET_ADMIN))
1495 if (dev->ethtool_ops->begin) {
1496 rc = dev->ethtool_ops->begin(dev);
1500 old_features = dev->features;
1504 rc = ethtool_get_settings(dev, useraddr);
1507 rc = ethtool_set_settings(dev, useraddr);
1509 case ETHTOOL_GDRVINFO:
1510 rc = ethtool_get_drvinfo(dev, useraddr);
1513 rc = ethtool_get_regs(dev, useraddr);
1516 rc = ethtool_get_wol(dev, useraddr);
1519 rc = ethtool_set_wol(dev, useraddr);
1521 case ETHTOOL_GMSGLVL:
1522 rc = ethtool_get_value(dev, useraddr, ethcmd,
1523 dev->ethtool_ops->get_msglevel);
1525 case ETHTOOL_SMSGLVL:
1526 rc = ethtool_set_value_void(dev, useraddr,
1527 dev->ethtool_ops->set_msglevel);
1529 case ETHTOOL_NWAY_RST:
1530 rc = ethtool_nway_reset(dev);
1533 rc = ethtool_get_value(dev, useraddr, ethcmd,
1534 dev->ethtool_ops->get_link);
1536 case ETHTOOL_GEEPROM:
1537 rc = ethtool_get_eeprom(dev, useraddr);
1539 case ETHTOOL_SEEPROM:
1540 rc = ethtool_set_eeprom(dev, useraddr);
1542 case ETHTOOL_GCOALESCE:
1543 rc = ethtool_get_coalesce(dev, useraddr);
1545 case ETHTOOL_SCOALESCE:
1546 rc = ethtool_set_coalesce(dev, useraddr);
1548 case ETHTOOL_GRINGPARAM:
1549 rc = ethtool_get_ringparam(dev, useraddr);
1551 case ETHTOOL_SRINGPARAM:
1552 rc = ethtool_set_ringparam(dev, useraddr);
1554 case ETHTOOL_GPAUSEPARAM:
1555 rc = ethtool_get_pauseparam(dev, useraddr);
1557 case ETHTOOL_SPAUSEPARAM:
1558 rc = ethtool_set_pauseparam(dev, useraddr);
1560 case ETHTOOL_GRXCSUM:
1561 rc = ethtool_get_value(dev, useraddr, ethcmd,
1562 (dev->ethtool_ops->get_rx_csum ?
1563 dev->ethtool_ops->get_rx_csum :
1564 ethtool_op_get_rx_csum));
1566 case ETHTOOL_SRXCSUM:
1567 rc = ethtool_set_rx_csum(dev, useraddr);
1569 case ETHTOOL_GTXCSUM:
1570 rc = ethtool_get_value(dev, useraddr, ethcmd,
1571 (dev->ethtool_ops->get_tx_csum ?
1572 dev->ethtool_ops->get_tx_csum :
1573 ethtool_op_get_tx_csum));
1575 case ETHTOOL_STXCSUM:
1576 rc = ethtool_set_tx_csum(dev, useraddr);
1579 rc = ethtool_get_value(dev, useraddr, ethcmd,
1580 (dev->ethtool_ops->get_sg ?
1581 dev->ethtool_ops->get_sg :
1582 ethtool_op_get_sg));
1585 rc = ethtool_set_sg(dev, useraddr);
1588 rc = ethtool_get_value(dev, useraddr, ethcmd,
1589 (dev->ethtool_ops->get_tso ?
1590 dev->ethtool_ops->get_tso :
1591 ethtool_op_get_tso));
1594 rc = ethtool_set_tso(dev, useraddr);
1597 rc = ethtool_self_test(dev, useraddr);
1599 case ETHTOOL_GSTRINGS:
1600 rc = ethtool_get_strings(dev, useraddr);
1602 case ETHTOOL_PHYS_ID:
1603 rc = ethtool_phys_id(dev, useraddr);
1605 case ETHTOOL_GSTATS:
1606 rc = ethtool_get_stats(dev, useraddr);
1608 case ETHTOOL_GPERMADDR:
1609 rc = ethtool_get_perm_addr(dev, useraddr);
1612 rc = ethtool_get_value(dev, useraddr, ethcmd,
1613 (dev->ethtool_ops->get_ufo ?
1614 dev->ethtool_ops->get_ufo :
1615 ethtool_op_get_ufo));
1618 rc = ethtool_set_ufo(dev, useraddr);
1621 rc = ethtool_get_gso(dev, useraddr);
1624 rc = ethtool_set_gso(dev, useraddr);
1626 case ETHTOOL_GFLAGS:
1627 rc = ethtool_get_value(dev, useraddr, ethcmd,
1628 (dev->ethtool_ops->get_flags ?
1629 dev->ethtool_ops->get_flags :
1630 ethtool_op_get_flags));
1632 case ETHTOOL_SFLAGS:
1633 rc = ethtool_set_value(dev, useraddr,
1634 dev->ethtool_ops->set_flags);
1636 case ETHTOOL_GPFLAGS:
1637 rc = ethtool_get_value(dev, useraddr, ethcmd,
1638 dev->ethtool_ops->get_priv_flags);
1640 case ETHTOOL_SPFLAGS:
1641 rc = ethtool_set_value(dev, useraddr,
1642 dev->ethtool_ops->set_priv_flags);
1645 case ETHTOOL_GRXRINGS:
1646 case ETHTOOL_GRXCLSRLCNT:
1647 case ETHTOOL_GRXCLSRULE:
1648 case ETHTOOL_GRXCLSRLALL:
1649 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
1652 case ETHTOOL_SRXCLSRLDEL:
1653 case ETHTOOL_SRXCLSRLINS:
1654 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
1657 rc = ethtool_get_gro(dev, useraddr);
1660 rc = ethtool_set_gro(dev, useraddr);
1662 case ETHTOOL_FLASHDEV:
1663 rc = ethtool_flash_device(dev, useraddr);
1666 rc = ethtool_reset(dev, useraddr);
1668 case ETHTOOL_SRXNTUPLE:
1669 rc = ethtool_set_rx_ntuple(dev, useraddr);
1671 case ETHTOOL_GRXNTUPLE:
1672 rc = ethtool_get_rx_ntuple(dev, useraddr);
1674 case ETHTOOL_GSSET_INFO:
1675 rc = ethtool_get_sset_info(dev, useraddr);
1677 case ETHTOOL_GRXFHINDIR:
1678 rc = ethtool_get_rxfh_indir(dev, useraddr);
1680 case ETHTOOL_SRXFHINDIR:
1681 rc = ethtool_set_rxfh_indir(dev, useraddr);
1687 if (dev->ethtool_ops->complete)
1688 dev->ethtool_ops->complete(dev);
1690 if (old_features != dev->features)
1691 netdev_features_change(dev);