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/slab.h>
25 * Some useful ethtool_ops methods that're device independent.
26 * If we find that all drivers want to do the same thing here,
27 * we can turn these into dev_() function calls.
30 u32 ethtool_op_get_link(struct net_device *dev)
32 return netif_carrier_ok(dev) ? 1 : 0;
34 EXPORT_SYMBOL(ethtool_op_get_link);
36 u32 ethtool_op_get_rx_csum(struct net_device *dev)
38 return (dev->features & NETIF_F_ALL_CSUM) != 0;
40 EXPORT_SYMBOL(ethtool_op_get_rx_csum);
42 u32 ethtool_op_get_tx_csum(struct net_device *dev)
44 return (dev->features & NETIF_F_ALL_CSUM) != 0;
46 EXPORT_SYMBOL(ethtool_op_get_tx_csum);
48 int ethtool_op_set_tx_csum(struct net_device *dev, u32 data)
51 dev->features |= NETIF_F_IP_CSUM;
53 dev->features &= ~NETIF_F_IP_CSUM;
58 int ethtool_op_set_tx_hw_csum(struct net_device *dev, u32 data)
61 dev->features |= NETIF_F_HW_CSUM;
63 dev->features &= ~NETIF_F_HW_CSUM;
67 EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum);
69 int ethtool_op_set_tx_ipv6_csum(struct net_device *dev, u32 data)
72 dev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
74 dev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
78 EXPORT_SYMBOL(ethtool_op_set_tx_ipv6_csum);
80 u32 ethtool_op_get_sg(struct net_device *dev)
82 return (dev->features & NETIF_F_SG) != 0;
84 EXPORT_SYMBOL(ethtool_op_get_sg);
86 int ethtool_op_set_sg(struct net_device *dev, u32 data)
89 dev->features |= NETIF_F_SG;
91 dev->features &= ~NETIF_F_SG;
95 EXPORT_SYMBOL(ethtool_op_set_sg);
97 u32 ethtool_op_get_tso(struct net_device *dev)
99 return (dev->features & NETIF_F_TSO) != 0;
101 EXPORT_SYMBOL(ethtool_op_get_tso);
103 int ethtool_op_set_tso(struct net_device *dev, u32 data)
106 dev->features |= NETIF_F_TSO;
108 dev->features &= ~NETIF_F_TSO;
112 EXPORT_SYMBOL(ethtool_op_set_tso);
114 u32 ethtool_op_get_ufo(struct net_device *dev)
116 return (dev->features & NETIF_F_UFO) != 0;
118 EXPORT_SYMBOL(ethtool_op_get_ufo);
120 int ethtool_op_set_ufo(struct net_device *dev, u32 data)
123 dev->features |= NETIF_F_UFO;
125 dev->features &= ~NETIF_F_UFO;
128 EXPORT_SYMBOL(ethtool_op_set_ufo);
130 /* the following list of flags are the same as their associated
131 * NETIF_F_xxx values in include/linux/netdevice.h
133 static const u32 flags_dup_features =
134 (ETH_FLAG_LRO | ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH);
136 u32 ethtool_op_get_flags(struct net_device *dev)
138 /* in the future, this function will probably contain additional
139 * handling for flags which are not so easily handled
140 * by a simple masking operation
143 return dev->features & flags_dup_features;
145 EXPORT_SYMBOL(ethtool_op_get_flags);
147 int ethtool_op_set_flags(struct net_device *dev, u32 data)
149 const struct ethtool_ops *ops = dev->ethtool_ops;
150 unsigned long features = dev->features;
152 if (data & ETH_FLAG_LRO)
153 features |= NETIF_F_LRO;
155 features &= ~NETIF_F_LRO;
157 if (data & ETH_FLAG_NTUPLE) {
158 if (!ops->set_rx_ntuple)
160 features |= NETIF_F_NTUPLE;
162 /* safe to clear regardless */
163 features &= ~NETIF_F_NTUPLE;
166 if (data & ETH_FLAG_RXHASH)
167 features |= NETIF_F_RXHASH;
169 features &= ~NETIF_F_RXHASH;
171 dev->features = features;
174 EXPORT_SYMBOL(ethtool_op_set_flags);
176 void ethtool_ntuple_flush(struct net_device *dev)
178 struct ethtool_rx_ntuple_flow_spec_container *fsc, *f;
180 list_for_each_entry_safe(fsc, f, &dev->ethtool_ntuple_list.list, list) {
181 list_del(&fsc->list);
184 dev->ethtool_ntuple_list.count = 0;
186 EXPORT_SYMBOL(ethtool_ntuple_flush);
188 /* Handlers for each ethtool command */
190 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
192 struct ethtool_cmd cmd = { .cmd = ETHTOOL_GSET };
195 if (!dev->ethtool_ops->get_settings)
198 err = dev->ethtool_ops->get_settings(dev, &cmd);
202 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
207 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
209 struct ethtool_cmd cmd;
211 if (!dev->ethtool_ops->set_settings)
214 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
217 return dev->ethtool_ops->set_settings(dev, &cmd);
220 static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
221 void __user *useraddr)
223 struct ethtool_drvinfo info;
224 const struct ethtool_ops *ops = dev->ethtool_ops;
226 if (!ops->get_drvinfo)
229 memset(&info, 0, sizeof(info));
230 info.cmd = ETHTOOL_GDRVINFO;
231 ops->get_drvinfo(dev, &info);
234 * this method of obtaining string set info is deprecated;
235 * Use ETHTOOL_GSSET_INFO instead.
237 if (ops->get_sset_count) {
240 rc = ops->get_sset_count(dev, ETH_SS_TEST);
242 info.testinfo_len = rc;
243 rc = ops->get_sset_count(dev, ETH_SS_STATS);
246 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
248 info.n_priv_flags = rc;
250 if (ops->get_regs_len)
251 info.regdump_len = ops->get_regs_len(dev);
252 if (ops->get_eeprom_len)
253 info.eedump_len = ops->get_eeprom_len(dev);
255 if (copy_to_user(useraddr, &info, sizeof(info)))
260 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
261 void __user *useraddr)
263 struct ethtool_sset_info info;
264 const struct ethtool_ops *ops = dev->ethtool_ops;
266 int i, idx = 0, n_bits = 0, ret, rc;
267 u32 *info_buf = NULL;
269 if (!ops->get_sset_count)
272 if (copy_from_user(&info, useraddr, sizeof(info)))
275 /* store copy of mask, because we zero struct later on */
276 sset_mask = info.sset_mask;
280 /* calculate size of return buffer */
281 n_bits = hweight64(sset_mask);
283 memset(&info, 0, sizeof(info));
284 info.cmd = ETHTOOL_GSSET_INFO;
286 info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
291 * fill return buffer based on input bitmask and successful
292 * get_sset_count return
294 for (i = 0; i < 64; i++) {
295 if (!(sset_mask & (1ULL << i)))
298 rc = ops->get_sset_count(dev, i);
300 info.sset_mask |= (1ULL << i);
301 info_buf[idx++] = rc;
306 if (copy_to_user(useraddr, &info, sizeof(info)))
309 useraddr += offsetof(struct ethtool_sset_info, data);
310 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
320 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
321 void __user *useraddr)
323 struct ethtool_rxnfc cmd;
325 if (!dev->ethtool_ops->set_rxnfc)
328 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
331 return dev->ethtool_ops->set_rxnfc(dev, &cmd);
334 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
335 void __user *useraddr)
337 struct ethtool_rxnfc info;
338 const struct ethtool_ops *ops = dev->ethtool_ops;
340 void *rule_buf = NULL;
345 if (copy_from_user(&info, useraddr, sizeof(info)))
348 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
349 if (info.rule_cnt > 0) {
350 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
351 rule_buf = kmalloc(info.rule_cnt * sizeof(u32),
358 ret = ops->get_rxnfc(dev, &info, rule_buf);
363 if (copy_to_user(useraddr, &info, sizeof(info)))
367 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
368 if (copy_to_user(useraddr, rule_buf,
369 info.rule_cnt * sizeof(u32)))
380 static void __rx_ntuple_filter_add(struct ethtool_rx_ntuple_list *list,
381 struct ethtool_rx_ntuple_flow_spec *spec,
382 struct ethtool_rx_ntuple_flow_spec_container *fsc)
385 /* don't add filters forever */
386 if (list->count >= ETHTOOL_MAX_NTUPLE_LIST_ENTRY) {
387 /* free the container */
392 /* Copy the whole filter over */
393 fsc->fs.flow_type = spec->flow_type;
394 memcpy(&fsc->fs.h_u, &spec->h_u, sizeof(spec->h_u));
395 memcpy(&fsc->fs.m_u, &spec->m_u, sizeof(spec->m_u));
397 fsc->fs.vlan_tag = spec->vlan_tag;
398 fsc->fs.vlan_tag_mask = spec->vlan_tag_mask;
399 fsc->fs.data = spec->data;
400 fsc->fs.data_mask = spec->data_mask;
401 fsc->fs.action = spec->action;
403 /* add to the list */
404 list_add_tail_rcu(&fsc->list, &list->list);
408 static noinline_for_stack int ethtool_set_rx_ntuple(struct net_device *dev,
409 void __user *useraddr)
411 struct ethtool_rx_ntuple cmd;
412 const struct ethtool_ops *ops = dev->ethtool_ops;
413 struct ethtool_rx_ntuple_flow_spec_container *fsc = NULL;
416 if (!(dev->features & NETIF_F_NTUPLE))
419 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
423 * Cache filter in dev struct for GET operation only if
424 * the underlying driver doesn't have its own GET operation, and
425 * only if the filter was added successfully. First make sure we
426 * can allocate the filter, then continue if successful.
428 if (!ops->get_rx_ntuple) {
429 fsc = kmalloc(sizeof(*fsc), GFP_ATOMIC);
434 ret = ops->set_rx_ntuple(dev, &cmd);
440 if (!ops->get_rx_ntuple)
441 __rx_ntuple_filter_add(&dev->ethtool_ntuple_list, &cmd.fs, fsc);
446 static int ethtool_get_rx_ntuple(struct net_device *dev, void __user *useraddr)
448 struct ethtool_gstrings gstrings;
449 const struct ethtool_ops *ops = dev->ethtool_ops;
450 struct ethtool_rx_ntuple_flow_spec_container *fsc;
453 int ret, i, num_strings = 0;
455 if (!ops->get_sset_count)
458 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
461 ret = ops->get_sset_count(dev, gstrings.string_set);
467 data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
471 if (ops->get_rx_ntuple) {
472 /* driver-specific filter grab */
473 ret = ops->get_rx_ntuple(dev, gstrings.string_set, data);
477 /* default ethtool filter grab */
480 list_for_each_entry(fsc, &dev->ethtool_ntuple_list.list, list) {
481 sprintf(p, "Filter %d:\n", i);
482 p += ETH_GSTRING_LEN;
485 switch (fsc->fs.flow_type) {
487 sprintf(p, "\tFlow Type: TCP\n");
488 p += ETH_GSTRING_LEN;
492 sprintf(p, "\tFlow Type: UDP\n");
493 p += ETH_GSTRING_LEN;
497 sprintf(p, "\tFlow Type: SCTP\n");
498 p += ETH_GSTRING_LEN;
502 sprintf(p, "\tFlow Type: AH ESP\n");
503 p += ETH_GSTRING_LEN;
507 sprintf(p, "\tFlow Type: ESP\n");
508 p += ETH_GSTRING_LEN;
512 sprintf(p, "\tFlow Type: Raw IP\n");
513 p += ETH_GSTRING_LEN;
517 sprintf(p, "\tFlow Type: IPv4\n");
518 p += ETH_GSTRING_LEN;
522 sprintf(p, "\tFlow Type: Unknown\n");
523 p += ETH_GSTRING_LEN;
528 /* now the rest of the filters */
529 switch (fsc->fs.flow_type) {
533 sprintf(p, "\tSrc IP addr: 0x%x\n",
534 fsc->fs.h_u.tcp_ip4_spec.ip4src);
535 p += ETH_GSTRING_LEN;
537 sprintf(p, "\tSrc IP mask: 0x%x\n",
538 fsc->fs.m_u.tcp_ip4_spec.ip4src);
539 p += ETH_GSTRING_LEN;
541 sprintf(p, "\tDest IP addr: 0x%x\n",
542 fsc->fs.h_u.tcp_ip4_spec.ip4dst);
543 p += ETH_GSTRING_LEN;
545 sprintf(p, "\tDest IP mask: 0x%x\n",
546 fsc->fs.m_u.tcp_ip4_spec.ip4dst);
547 p += ETH_GSTRING_LEN;
549 sprintf(p, "\tSrc Port: %d, mask: 0x%x\n",
550 fsc->fs.h_u.tcp_ip4_spec.psrc,
551 fsc->fs.m_u.tcp_ip4_spec.psrc);
552 p += ETH_GSTRING_LEN;
554 sprintf(p, "\tDest Port: %d, mask: 0x%x\n",
555 fsc->fs.h_u.tcp_ip4_spec.pdst,
556 fsc->fs.m_u.tcp_ip4_spec.pdst);
557 p += ETH_GSTRING_LEN;
559 sprintf(p, "\tTOS: %d, mask: 0x%x\n",
560 fsc->fs.h_u.tcp_ip4_spec.tos,
561 fsc->fs.m_u.tcp_ip4_spec.tos);
562 p += ETH_GSTRING_LEN;
567 sprintf(p, "\tSrc IP addr: 0x%x\n",
568 fsc->fs.h_u.ah_ip4_spec.ip4src);
569 p += ETH_GSTRING_LEN;
571 sprintf(p, "\tSrc IP mask: 0x%x\n",
572 fsc->fs.m_u.ah_ip4_spec.ip4src);
573 p += ETH_GSTRING_LEN;
575 sprintf(p, "\tDest IP addr: 0x%x\n",
576 fsc->fs.h_u.ah_ip4_spec.ip4dst);
577 p += ETH_GSTRING_LEN;
579 sprintf(p, "\tDest IP mask: 0x%x\n",
580 fsc->fs.m_u.ah_ip4_spec.ip4dst);
581 p += ETH_GSTRING_LEN;
583 sprintf(p, "\tSPI: %d, mask: 0x%x\n",
584 fsc->fs.h_u.ah_ip4_spec.spi,
585 fsc->fs.m_u.ah_ip4_spec.spi);
586 p += ETH_GSTRING_LEN;
588 sprintf(p, "\tTOS: %d, mask: 0x%x\n",
589 fsc->fs.h_u.ah_ip4_spec.tos,
590 fsc->fs.m_u.ah_ip4_spec.tos);
591 p += ETH_GSTRING_LEN;
595 sprintf(p, "\tSrc IP addr: 0x%x\n",
596 fsc->fs.h_u.raw_ip4_spec.ip4src);
597 p += ETH_GSTRING_LEN;
599 sprintf(p, "\tSrc IP mask: 0x%x\n",
600 fsc->fs.m_u.raw_ip4_spec.ip4src);
601 p += ETH_GSTRING_LEN;
603 sprintf(p, "\tDest IP addr: 0x%x\n",
604 fsc->fs.h_u.raw_ip4_spec.ip4dst);
605 p += ETH_GSTRING_LEN;
607 sprintf(p, "\tDest IP mask: 0x%x\n",
608 fsc->fs.m_u.raw_ip4_spec.ip4dst);
609 p += ETH_GSTRING_LEN;
613 sprintf(p, "\tSrc IP addr: 0x%x\n",
614 fsc->fs.h_u.usr_ip4_spec.ip4src);
615 p += ETH_GSTRING_LEN;
617 sprintf(p, "\tSrc IP mask: 0x%x\n",
618 fsc->fs.m_u.usr_ip4_spec.ip4src);
619 p += ETH_GSTRING_LEN;
621 sprintf(p, "\tDest IP addr: 0x%x\n",
622 fsc->fs.h_u.usr_ip4_spec.ip4dst);
623 p += ETH_GSTRING_LEN;
625 sprintf(p, "\tDest IP mask: 0x%x\n",
626 fsc->fs.m_u.usr_ip4_spec.ip4dst);
627 p += ETH_GSTRING_LEN;
629 sprintf(p, "\tL4 bytes: 0x%x, mask: 0x%x\n",
630 fsc->fs.h_u.usr_ip4_spec.l4_4_bytes,
631 fsc->fs.m_u.usr_ip4_spec.l4_4_bytes);
632 p += ETH_GSTRING_LEN;
634 sprintf(p, "\tTOS: %d, mask: 0x%x\n",
635 fsc->fs.h_u.usr_ip4_spec.tos,
636 fsc->fs.m_u.usr_ip4_spec.tos);
637 p += ETH_GSTRING_LEN;
639 sprintf(p, "\tIP Version: %d, mask: 0x%x\n",
640 fsc->fs.h_u.usr_ip4_spec.ip_ver,
641 fsc->fs.m_u.usr_ip4_spec.ip_ver);
642 p += ETH_GSTRING_LEN;
644 sprintf(p, "\tProtocol: %d, mask: 0x%x\n",
645 fsc->fs.h_u.usr_ip4_spec.proto,
646 fsc->fs.m_u.usr_ip4_spec.proto);
647 p += ETH_GSTRING_LEN;
651 sprintf(p, "\tVLAN: %d, mask: 0x%x\n",
652 fsc->fs.vlan_tag, fsc->fs.vlan_tag_mask);
653 p += ETH_GSTRING_LEN;
655 sprintf(p, "\tUser-defined: 0x%Lx\n", fsc->fs.data);
656 p += ETH_GSTRING_LEN;
658 sprintf(p, "\tUser-defined mask: 0x%Lx\n", fsc->fs.data_mask);
659 p += ETH_GSTRING_LEN;
661 if (fsc->fs.action == ETHTOOL_RXNTUPLE_ACTION_DROP)
662 sprintf(p, "\tAction: Drop\n");
664 sprintf(p, "\tAction: Direct to queue %d\n",
666 p += ETH_GSTRING_LEN;
672 /* indicate to userspace how many strings we actually have */
673 gstrings.len = num_strings;
675 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
677 useraddr += sizeof(gstrings);
678 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
687 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
689 struct ethtool_regs regs;
690 const struct ethtool_ops *ops = dev->ethtool_ops;
694 if (!ops->get_regs || !ops->get_regs_len)
697 if (copy_from_user(®s, useraddr, sizeof(regs)))
700 reglen = ops->get_regs_len(dev);
701 if (regs.len > reglen)
704 regbuf = kmalloc(reglen, GFP_USER);
708 ops->get_regs(dev, ®s, regbuf);
711 if (copy_to_user(useraddr, ®s, sizeof(regs)))
713 useraddr += offsetof(struct ethtool_regs, data);
714 if (copy_to_user(useraddr, regbuf, regs.len))
723 static int ethtool_reset(struct net_device *dev, char __user *useraddr)
725 struct ethtool_value reset;
728 if (!dev->ethtool_ops->reset)
731 if (copy_from_user(&reset, useraddr, sizeof(reset)))
734 ret = dev->ethtool_ops->reset(dev, &reset.data);
738 if (copy_to_user(useraddr, &reset, sizeof(reset)))
743 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
745 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
747 if (!dev->ethtool_ops->get_wol)
750 dev->ethtool_ops->get_wol(dev, &wol);
752 if (copy_to_user(useraddr, &wol, sizeof(wol)))
757 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
759 struct ethtool_wolinfo wol;
761 if (!dev->ethtool_ops->set_wol)
764 if (copy_from_user(&wol, useraddr, sizeof(wol)))
767 return dev->ethtool_ops->set_wol(dev, &wol);
770 static int ethtool_nway_reset(struct net_device *dev)
772 if (!dev->ethtool_ops->nway_reset)
775 return dev->ethtool_ops->nway_reset(dev);
778 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
780 struct ethtool_eeprom eeprom;
781 const struct ethtool_ops *ops = dev->ethtool_ops;
782 void __user *userbuf = useraddr + sizeof(eeprom);
787 if (!ops->get_eeprom || !ops->get_eeprom_len)
790 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
793 /* Check for wrap and zero */
794 if (eeprom.offset + eeprom.len <= eeprom.offset)
797 /* Check for exceeding total eeprom len */
798 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
801 data = kmalloc(PAGE_SIZE, GFP_USER);
805 bytes_remaining = eeprom.len;
806 while (bytes_remaining > 0) {
807 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
809 ret = ops->get_eeprom(dev, &eeprom, data);
812 if (copy_to_user(userbuf, data, eeprom.len)) {
816 userbuf += eeprom.len;
817 eeprom.offset += eeprom.len;
818 bytes_remaining -= eeprom.len;
821 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
822 eeprom.offset -= eeprom.len;
823 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
830 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
832 struct ethtool_eeprom eeprom;
833 const struct ethtool_ops *ops = dev->ethtool_ops;
834 void __user *userbuf = useraddr + sizeof(eeprom);
839 if (!ops->set_eeprom || !ops->get_eeprom_len)
842 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
845 /* Check for wrap and zero */
846 if (eeprom.offset + eeprom.len <= eeprom.offset)
849 /* Check for exceeding total eeprom len */
850 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
853 data = kmalloc(PAGE_SIZE, GFP_USER);
857 bytes_remaining = eeprom.len;
858 while (bytes_remaining > 0) {
859 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
861 if (copy_from_user(data, userbuf, eeprom.len)) {
865 ret = ops->set_eeprom(dev, &eeprom, data);
868 userbuf += eeprom.len;
869 eeprom.offset += eeprom.len;
870 bytes_remaining -= eeprom.len;
877 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
878 void __user *useraddr)
880 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
882 if (!dev->ethtool_ops->get_coalesce)
885 dev->ethtool_ops->get_coalesce(dev, &coalesce);
887 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
892 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
893 void __user *useraddr)
895 struct ethtool_coalesce coalesce;
897 if (!dev->ethtool_ops->set_coalesce)
900 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
903 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
906 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
908 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
910 if (!dev->ethtool_ops->get_ringparam)
913 dev->ethtool_ops->get_ringparam(dev, &ringparam);
915 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
920 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
922 struct ethtool_ringparam ringparam;
924 if (!dev->ethtool_ops->set_ringparam)
927 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
930 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
933 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
935 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
937 if (!dev->ethtool_ops->get_pauseparam)
940 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
942 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
947 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
949 struct ethtool_pauseparam pauseparam;
951 if (!dev->ethtool_ops->set_pauseparam)
954 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
957 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
960 static int __ethtool_set_sg(struct net_device *dev, u32 data)
964 if (!data && dev->ethtool_ops->set_tso) {
965 err = dev->ethtool_ops->set_tso(dev, 0);
970 if (!data && dev->ethtool_ops->set_ufo) {
971 err = dev->ethtool_ops->set_ufo(dev, 0);
975 return dev->ethtool_ops->set_sg(dev, data);
978 static int ethtool_set_tx_csum(struct net_device *dev, char __user *useraddr)
980 struct ethtool_value edata;
983 if (!dev->ethtool_ops->set_tx_csum)
986 if (copy_from_user(&edata, useraddr, sizeof(edata)))
989 if (!edata.data && dev->ethtool_ops->set_sg) {
990 err = __ethtool_set_sg(dev, 0);
995 return dev->ethtool_ops->set_tx_csum(dev, edata.data);
997 EXPORT_SYMBOL(ethtool_op_set_tx_csum);
999 static int ethtool_set_rx_csum(struct net_device *dev, char __user *useraddr)
1001 struct ethtool_value edata;
1003 if (!dev->ethtool_ops->set_rx_csum)
1006 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1009 if (!edata.data && dev->ethtool_ops->set_sg)
1010 dev->features &= ~NETIF_F_GRO;
1012 return dev->ethtool_ops->set_rx_csum(dev, edata.data);
1015 static int ethtool_set_sg(struct net_device *dev, char __user *useraddr)
1017 struct ethtool_value edata;
1019 if (!dev->ethtool_ops->set_sg)
1022 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1026 !(dev->features & NETIF_F_ALL_CSUM))
1029 return __ethtool_set_sg(dev, edata.data);
1032 static int ethtool_set_tso(struct net_device *dev, char __user *useraddr)
1034 struct ethtool_value edata;
1036 if (!dev->ethtool_ops->set_tso)
1039 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1042 if (edata.data && !(dev->features & NETIF_F_SG))
1045 return dev->ethtool_ops->set_tso(dev, edata.data);
1048 static int ethtool_set_ufo(struct net_device *dev, char __user *useraddr)
1050 struct ethtool_value edata;
1052 if (!dev->ethtool_ops->set_ufo)
1054 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1056 if (edata.data && !(dev->features & NETIF_F_SG))
1058 if (edata.data && !(dev->features & NETIF_F_HW_CSUM))
1060 return dev->ethtool_ops->set_ufo(dev, edata.data);
1063 static int ethtool_get_gso(struct net_device *dev, char __user *useraddr)
1065 struct ethtool_value edata = { ETHTOOL_GGSO };
1067 edata.data = dev->features & NETIF_F_GSO;
1068 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1073 static int ethtool_set_gso(struct net_device *dev, char __user *useraddr)
1075 struct ethtool_value edata;
1077 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1080 dev->features |= NETIF_F_GSO;
1082 dev->features &= ~NETIF_F_GSO;
1086 static int ethtool_get_gro(struct net_device *dev, char __user *useraddr)
1088 struct ethtool_value edata = { ETHTOOL_GGRO };
1090 edata.data = dev->features & NETIF_F_GRO;
1091 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1096 static int ethtool_set_gro(struct net_device *dev, char __user *useraddr)
1098 struct ethtool_value edata;
1100 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1104 if (!dev->ethtool_ops->get_rx_csum ||
1105 !dev->ethtool_ops->get_rx_csum(dev))
1107 dev->features |= NETIF_F_GRO;
1109 dev->features &= ~NETIF_F_GRO;
1114 static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1116 struct ethtool_test test;
1117 const struct ethtool_ops *ops = dev->ethtool_ops;
1121 if (!ops->self_test || !ops->get_sset_count)
1124 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
1127 WARN_ON(test_len == 0);
1129 if (copy_from_user(&test, useraddr, sizeof(test)))
1132 test.len = test_len;
1133 data = kmalloc(test_len * sizeof(u64), GFP_USER);
1137 ops->self_test(dev, &test, data);
1140 if (copy_to_user(useraddr, &test, sizeof(test)))
1142 useraddr += sizeof(test);
1143 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1152 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1154 struct ethtool_gstrings gstrings;
1155 const struct ethtool_ops *ops = dev->ethtool_ops;
1159 if (!ops->get_strings || !ops->get_sset_count)
1162 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1165 ret = ops->get_sset_count(dev, gstrings.string_set);
1171 data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
1175 ops->get_strings(dev, gstrings.string_set, data);
1178 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1180 useraddr += sizeof(gstrings);
1181 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1190 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1192 struct ethtool_value id;
1194 if (!dev->ethtool_ops->phys_id)
1197 if (copy_from_user(&id, useraddr, sizeof(id)))
1200 return dev->ethtool_ops->phys_id(dev, id.data);
1203 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1205 struct ethtool_stats stats;
1206 const struct ethtool_ops *ops = dev->ethtool_ops;
1210 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1213 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
1216 WARN_ON(n_stats == 0);
1218 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1221 stats.n_stats = n_stats;
1222 data = kmalloc(n_stats * sizeof(u64), GFP_USER);
1226 ops->get_ethtool_stats(dev, &stats, data);
1229 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1231 useraddr += sizeof(stats);
1232 if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
1241 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
1243 struct ethtool_perm_addr epaddr;
1245 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
1248 if (epaddr.size < dev->addr_len)
1250 epaddr.size = dev->addr_len;
1252 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
1254 useraddr += sizeof(epaddr);
1255 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
1260 static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
1261 u32 cmd, u32 (*actor)(struct net_device *))
1263 struct ethtool_value edata = { .cmd = cmd };
1268 edata.data = actor(dev);
1270 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1275 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
1276 void (*actor)(struct net_device *, u32))
1278 struct ethtool_value edata;
1283 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1286 actor(dev, edata.data);
1290 static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
1291 int (*actor)(struct net_device *, u32))
1293 struct ethtool_value edata;
1298 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1301 return actor(dev, edata.data);
1304 static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
1305 char __user *useraddr)
1307 struct ethtool_flash efl;
1309 if (copy_from_user(&efl, useraddr, sizeof(efl)))
1312 if (!dev->ethtool_ops->flash_device)
1315 return dev->ethtool_ops->flash_device(dev, &efl);
1318 /* The main entry point in this file. Called from net/core/dev.c */
1320 int dev_ethtool(struct net *net, struct ifreq *ifr)
1322 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
1323 void __user *useraddr = ifr->ifr_data;
1326 unsigned long old_features;
1328 if (!dev || !netif_device_present(dev))
1331 if (!dev->ethtool_ops)
1334 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd)))
1337 /* Allow some commands to be done by anyone */
1339 case ETHTOOL_GDRVINFO:
1340 case ETHTOOL_GMSGLVL:
1341 case ETHTOOL_GCOALESCE:
1342 case ETHTOOL_GRINGPARAM:
1343 case ETHTOOL_GPAUSEPARAM:
1344 case ETHTOOL_GRXCSUM:
1345 case ETHTOOL_GTXCSUM:
1347 case ETHTOOL_GSTRINGS:
1349 case ETHTOOL_GPERMADDR:
1353 case ETHTOOL_GFLAGS:
1354 case ETHTOOL_GPFLAGS:
1356 case ETHTOOL_GRXRINGS:
1357 case ETHTOOL_GRXCLSRLCNT:
1358 case ETHTOOL_GRXCLSRULE:
1359 case ETHTOOL_GRXCLSRLALL:
1362 if (!capable(CAP_NET_ADMIN))
1366 if (dev->ethtool_ops->begin) {
1367 rc = dev->ethtool_ops->begin(dev);
1371 old_features = dev->features;
1375 rc = ethtool_get_settings(dev, useraddr);
1378 rc = ethtool_set_settings(dev, useraddr);
1380 case ETHTOOL_GDRVINFO:
1381 rc = ethtool_get_drvinfo(dev, useraddr);
1384 rc = ethtool_get_regs(dev, useraddr);
1387 rc = ethtool_get_wol(dev, useraddr);
1390 rc = ethtool_set_wol(dev, useraddr);
1392 case ETHTOOL_GMSGLVL:
1393 rc = ethtool_get_value(dev, useraddr, ethcmd,
1394 dev->ethtool_ops->get_msglevel);
1396 case ETHTOOL_SMSGLVL:
1397 rc = ethtool_set_value_void(dev, useraddr,
1398 dev->ethtool_ops->set_msglevel);
1400 case ETHTOOL_NWAY_RST:
1401 rc = ethtool_nway_reset(dev);
1404 rc = ethtool_get_value(dev, useraddr, ethcmd,
1405 dev->ethtool_ops->get_link);
1407 case ETHTOOL_GEEPROM:
1408 rc = ethtool_get_eeprom(dev, useraddr);
1410 case ETHTOOL_SEEPROM:
1411 rc = ethtool_set_eeprom(dev, useraddr);
1413 case ETHTOOL_GCOALESCE:
1414 rc = ethtool_get_coalesce(dev, useraddr);
1416 case ETHTOOL_SCOALESCE:
1417 rc = ethtool_set_coalesce(dev, useraddr);
1419 case ETHTOOL_GRINGPARAM:
1420 rc = ethtool_get_ringparam(dev, useraddr);
1422 case ETHTOOL_SRINGPARAM:
1423 rc = ethtool_set_ringparam(dev, useraddr);
1425 case ETHTOOL_GPAUSEPARAM:
1426 rc = ethtool_get_pauseparam(dev, useraddr);
1428 case ETHTOOL_SPAUSEPARAM:
1429 rc = ethtool_set_pauseparam(dev, useraddr);
1431 case ETHTOOL_GRXCSUM:
1432 rc = ethtool_get_value(dev, useraddr, ethcmd,
1433 (dev->ethtool_ops->get_rx_csum ?
1434 dev->ethtool_ops->get_rx_csum :
1435 ethtool_op_get_rx_csum));
1437 case ETHTOOL_SRXCSUM:
1438 rc = ethtool_set_rx_csum(dev, useraddr);
1440 case ETHTOOL_GTXCSUM:
1441 rc = ethtool_get_value(dev, useraddr, ethcmd,
1442 (dev->ethtool_ops->get_tx_csum ?
1443 dev->ethtool_ops->get_tx_csum :
1444 ethtool_op_get_tx_csum));
1446 case ETHTOOL_STXCSUM:
1447 rc = ethtool_set_tx_csum(dev, useraddr);
1450 rc = ethtool_get_value(dev, useraddr, ethcmd,
1451 (dev->ethtool_ops->get_sg ?
1452 dev->ethtool_ops->get_sg :
1453 ethtool_op_get_sg));
1456 rc = ethtool_set_sg(dev, useraddr);
1459 rc = ethtool_get_value(dev, useraddr, ethcmd,
1460 (dev->ethtool_ops->get_tso ?
1461 dev->ethtool_ops->get_tso :
1462 ethtool_op_get_tso));
1465 rc = ethtool_set_tso(dev, useraddr);
1468 rc = ethtool_self_test(dev, useraddr);
1470 case ETHTOOL_GSTRINGS:
1471 rc = ethtool_get_strings(dev, useraddr);
1473 case ETHTOOL_PHYS_ID:
1474 rc = ethtool_phys_id(dev, useraddr);
1476 case ETHTOOL_GSTATS:
1477 rc = ethtool_get_stats(dev, useraddr);
1479 case ETHTOOL_GPERMADDR:
1480 rc = ethtool_get_perm_addr(dev, useraddr);
1483 rc = ethtool_get_value(dev, useraddr, ethcmd,
1484 (dev->ethtool_ops->get_ufo ?
1485 dev->ethtool_ops->get_ufo :
1486 ethtool_op_get_ufo));
1489 rc = ethtool_set_ufo(dev, useraddr);
1492 rc = ethtool_get_gso(dev, useraddr);
1495 rc = ethtool_set_gso(dev, useraddr);
1497 case ETHTOOL_GFLAGS:
1498 rc = ethtool_get_value(dev, useraddr, ethcmd,
1499 (dev->ethtool_ops->get_flags ?
1500 dev->ethtool_ops->get_flags :
1501 ethtool_op_get_flags));
1503 case ETHTOOL_SFLAGS:
1504 rc = ethtool_set_value(dev, useraddr,
1505 dev->ethtool_ops->set_flags);
1507 case ETHTOOL_GPFLAGS:
1508 rc = ethtool_get_value(dev, useraddr, ethcmd,
1509 dev->ethtool_ops->get_priv_flags);
1511 case ETHTOOL_SPFLAGS:
1512 rc = ethtool_set_value(dev, useraddr,
1513 dev->ethtool_ops->set_priv_flags);
1516 case ETHTOOL_GRXRINGS:
1517 case ETHTOOL_GRXCLSRLCNT:
1518 case ETHTOOL_GRXCLSRULE:
1519 case ETHTOOL_GRXCLSRLALL:
1520 rc = ethtool_get_rxnfc(dev, useraddr);
1523 case ETHTOOL_SRXCLSRLDEL:
1524 case ETHTOOL_SRXCLSRLINS:
1525 rc = ethtool_set_rxnfc(dev, useraddr);
1528 rc = ethtool_get_gro(dev, useraddr);
1531 rc = ethtool_set_gro(dev, useraddr);
1533 case ETHTOOL_FLASHDEV:
1534 rc = ethtool_flash_device(dev, useraddr);
1537 rc = ethtool_reset(dev, useraddr);
1539 case ETHTOOL_SRXNTUPLE:
1540 rc = ethtool_set_rx_ntuple(dev, useraddr);
1542 case ETHTOOL_GRXNTUPLE:
1543 rc = ethtool_get_rx_ntuple(dev, useraddr);
1545 case ETHTOOL_GSSET_INFO:
1546 rc = ethtool_get_sset_info(dev, useraddr);
1552 if (dev->ethtool_ops->complete)
1553 dev->ethtool_ops->complete(dev);
1555 if (old_features != dev->features)
1556 netdev_features_change(dev);