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/net_tstamp.h>
21 #include <linux/phy.h>
22 #include <linux/bitops.h>
23 #include <linux/uaccess.h>
24 #include <linux/vmalloc.h>
25 #include <linux/slab.h>
26 #include <linux/rtnetlink.h>
27 #include <linux/sched.h>
30 * Some useful ethtool_ops methods that're device independent.
31 * If we find that all drivers want to do the same thing here,
32 * we can turn these into dev_() function calls.
35 u32 ethtool_op_get_link(struct net_device *dev)
37 return netif_carrier_ok(dev) ? 1 : 0;
39 EXPORT_SYMBOL(ethtool_op_get_link);
41 int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info)
43 info->so_timestamping =
44 SOF_TIMESTAMPING_TX_SOFTWARE |
45 SOF_TIMESTAMPING_RX_SOFTWARE |
46 SOF_TIMESTAMPING_SOFTWARE;
50 EXPORT_SYMBOL(ethtool_op_get_ts_info);
52 /* Handlers for each ethtool command */
54 #define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32)
56 static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = {
57 [NETIF_F_SG_BIT] = "tx-scatter-gather",
58 [NETIF_F_IP_CSUM_BIT] = "tx-checksum-ipv4",
59 [NETIF_F_HW_CSUM_BIT] = "tx-checksum-ip-generic",
60 [NETIF_F_IPV6_CSUM_BIT] = "tx-checksum-ipv6",
61 [NETIF_F_HIGHDMA_BIT] = "highdma",
62 [NETIF_F_FRAGLIST_BIT] = "tx-scatter-gather-fraglist",
63 [NETIF_F_HW_VLAN_CTAG_TX_BIT] = "tx-vlan-ctag-hw-insert",
65 [NETIF_F_HW_VLAN_CTAG_RX_BIT] = "rx-vlan-ctag-hw-parse",
66 [NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-ctag-filter",
67 [NETIF_F_VLAN_CHALLENGED_BIT] = "vlan-challenged",
68 [NETIF_F_GSO_BIT] = "tx-generic-segmentation",
69 [NETIF_F_LLTX_BIT] = "tx-lockless",
70 [NETIF_F_NETNS_LOCAL_BIT] = "netns-local",
71 [NETIF_F_GRO_BIT] = "rx-gro",
72 [NETIF_F_LRO_BIT] = "rx-lro",
74 [NETIF_F_TSO_BIT] = "tx-tcp-segmentation",
75 [NETIF_F_UFO_BIT] = "tx-udp-fragmentation",
76 [NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust",
77 [NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation",
78 [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation",
79 [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation",
80 [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation",
81 [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation",
83 [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc",
84 [NETIF_F_SCTP_CSUM_BIT] = "tx-checksum-sctp",
85 [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu",
86 [NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter",
87 [NETIF_F_RXHASH_BIT] = "rx-hashing",
88 [NETIF_F_RXCSUM_BIT] = "rx-checksum",
89 [NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy",
90 [NETIF_F_LOOPBACK_BIT] = "loopback",
91 [NETIF_F_RXFCS_BIT] = "rx-fcs",
92 [NETIF_F_RXALL_BIT] = "rx-all",
95 static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
97 struct ethtool_gfeatures cmd = {
98 .cmd = ETHTOOL_GFEATURES,
99 .size = ETHTOOL_DEV_FEATURE_WORDS,
101 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
102 u32 __user *sizeaddr;
106 /* in case feature bits run out again */
107 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t));
109 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
110 features[i].available = (u32)(dev->hw_features >> (32 * i));
111 features[i].requested = (u32)(dev->wanted_features >> (32 * i));
112 features[i].active = (u32)(dev->features >> (32 * i));
113 features[i].never_changed =
114 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i));
117 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
118 if (get_user(copy_size, sizeaddr))
121 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
122 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
124 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
126 useraddr += sizeof(cmd);
127 if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
133 static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
135 struct ethtool_sfeatures cmd;
136 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
137 netdev_features_t wanted = 0, valid = 0;
140 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
142 useraddr += sizeof(cmd);
144 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
147 if (copy_from_user(features, useraddr, sizeof(features)))
150 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
151 valid |= (netdev_features_t)features[i].valid << (32 * i);
152 wanted |= (netdev_features_t)features[i].requested << (32 * i);
155 if (valid & ~NETIF_F_ETHTOOL_BITS)
158 if (valid & ~dev->hw_features) {
159 valid &= dev->hw_features;
160 ret |= ETHTOOL_F_UNSUPPORTED;
163 dev->wanted_features &= ~valid;
164 dev->wanted_features |= wanted & valid;
165 __netdev_update_features(dev);
167 if ((dev->wanted_features ^ dev->features) & valid)
168 ret |= ETHTOOL_F_WISH;
173 static int __ethtool_get_sset_count(struct net_device *dev, int sset)
175 const struct ethtool_ops *ops = dev->ethtool_ops;
177 if (sset == ETH_SS_FEATURES)
178 return ARRAY_SIZE(netdev_features_strings);
180 if (ops->get_sset_count && ops->get_strings)
181 return ops->get_sset_count(dev, sset);
186 static void __ethtool_get_strings(struct net_device *dev,
187 u32 stringset, u8 *data)
189 const struct ethtool_ops *ops = dev->ethtool_ops;
191 if (stringset == ETH_SS_FEATURES)
192 memcpy(data, netdev_features_strings,
193 sizeof(netdev_features_strings));
195 /* ops->get_strings is valid because checked earlier */
196 ops->get_strings(dev, stringset, data);
199 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd)
201 /* feature masks of legacy discrete ethtool ops */
204 case ETHTOOL_GTXCSUM:
205 case ETHTOOL_STXCSUM:
206 return NETIF_F_ALL_CSUM | NETIF_F_SCTP_CSUM;
207 case ETHTOOL_GRXCSUM:
208 case ETHTOOL_SRXCSUM:
209 return NETIF_F_RXCSUM;
215 return NETIF_F_ALL_TSO;
230 static int ethtool_get_one_feature(struct net_device *dev,
231 char __user *useraddr, u32 ethcmd)
233 netdev_features_t mask = ethtool_get_feature_mask(ethcmd);
234 struct ethtool_value edata = {
236 .data = !!(dev->features & mask),
239 if (copy_to_user(useraddr, &edata, sizeof(edata)))
244 static int ethtool_set_one_feature(struct net_device *dev,
245 void __user *useraddr, u32 ethcmd)
247 struct ethtool_value edata;
248 netdev_features_t mask;
250 if (copy_from_user(&edata, useraddr, sizeof(edata)))
253 mask = ethtool_get_feature_mask(ethcmd);
254 mask &= dev->hw_features;
259 dev->wanted_features |= mask;
261 dev->wanted_features &= ~mask;
263 __netdev_update_features(dev);
268 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
269 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
270 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
271 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
274 static u32 __ethtool_get_flags(struct net_device *dev)
278 if (dev->features & NETIF_F_LRO) flags |= ETH_FLAG_LRO;
279 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) flags |= ETH_FLAG_RXVLAN;
280 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) flags |= ETH_FLAG_TXVLAN;
281 if (dev->features & NETIF_F_NTUPLE) flags |= ETH_FLAG_NTUPLE;
282 if (dev->features & NETIF_F_RXHASH) flags |= ETH_FLAG_RXHASH;
287 static int __ethtool_set_flags(struct net_device *dev, u32 data)
289 netdev_features_t features = 0, changed;
291 if (data & ~ETH_ALL_FLAGS)
294 if (data & ETH_FLAG_LRO) features |= NETIF_F_LRO;
295 if (data & ETH_FLAG_RXVLAN) features |= NETIF_F_HW_VLAN_CTAG_RX;
296 if (data & ETH_FLAG_TXVLAN) features |= NETIF_F_HW_VLAN_CTAG_TX;
297 if (data & ETH_FLAG_NTUPLE) features |= NETIF_F_NTUPLE;
298 if (data & ETH_FLAG_RXHASH) features |= NETIF_F_RXHASH;
300 /* allow changing only bits set in hw_features */
301 changed = (features ^ dev->features) & ETH_ALL_FEATURES;
302 if (changed & ~dev->hw_features)
303 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
305 dev->wanted_features =
306 (dev->wanted_features & ~changed) | (features & changed);
308 __netdev_update_features(dev);
313 int __ethtool_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
317 if (!dev->ethtool_ops->get_settings)
320 memset(cmd, 0, sizeof(struct ethtool_cmd));
321 cmd->cmd = ETHTOOL_GSET;
322 return dev->ethtool_ops->get_settings(dev, cmd);
324 EXPORT_SYMBOL(__ethtool_get_settings);
326 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
329 struct ethtool_cmd cmd;
331 err = __ethtool_get_settings(dev, &cmd);
335 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
340 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
342 struct ethtool_cmd cmd;
344 if (!dev->ethtool_ops->set_settings)
347 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
350 return dev->ethtool_ops->set_settings(dev, &cmd);
353 static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
354 void __user *useraddr)
356 struct ethtool_drvinfo info;
357 const struct ethtool_ops *ops = dev->ethtool_ops;
359 memset(&info, 0, sizeof(info));
360 info.cmd = ETHTOOL_GDRVINFO;
361 if (ops->get_drvinfo) {
362 ops->get_drvinfo(dev, &info);
363 } else if (dev->dev.parent && dev->dev.parent->driver) {
364 strlcpy(info.bus_info, dev_name(dev->dev.parent),
365 sizeof(info.bus_info));
366 strlcpy(info.driver, dev->dev.parent->driver->name,
367 sizeof(info.driver));
373 * this method of obtaining string set info is deprecated;
374 * Use ETHTOOL_GSSET_INFO instead.
376 if (ops->get_sset_count) {
379 rc = ops->get_sset_count(dev, ETH_SS_TEST);
381 info.testinfo_len = rc;
382 rc = ops->get_sset_count(dev, ETH_SS_STATS);
385 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
387 info.n_priv_flags = rc;
389 if (ops->get_regs_len)
390 info.regdump_len = ops->get_regs_len(dev);
391 if (ops->get_eeprom_len)
392 info.eedump_len = ops->get_eeprom_len(dev);
394 if (copy_to_user(useraddr, &info, sizeof(info)))
399 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
400 void __user *useraddr)
402 struct ethtool_sset_info info;
404 int i, idx = 0, n_bits = 0, ret, rc;
405 u32 *info_buf = NULL;
407 if (copy_from_user(&info, useraddr, sizeof(info)))
410 /* store copy of mask, because we zero struct later on */
411 sset_mask = info.sset_mask;
415 /* calculate size of return buffer */
416 n_bits = hweight64(sset_mask);
418 memset(&info, 0, sizeof(info));
419 info.cmd = ETHTOOL_GSSET_INFO;
421 info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
426 * fill return buffer based on input bitmask and successful
427 * get_sset_count return
429 for (i = 0; i < 64; i++) {
430 if (!(sset_mask & (1ULL << i)))
433 rc = __ethtool_get_sset_count(dev, i);
435 info.sset_mask |= (1ULL << i);
436 info_buf[idx++] = rc;
441 if (copy_to_user(useraddr, &info, sizeof(info)))
444 useraddr += offsetof(struct ethtool_sset_info, data);
445 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
455 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
456 u32 cmd, void __user *useraddr)
458 struct ethtool_rxnfc info;
459 size_t info_size = sizeof(info);
462 if (!dev->ethtool_ops->set_rxnfc)
465 /* struct ethtool_rxnfc was originally defined for
466 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
467 * members. User-space might still be using that
469 if (cmd == ETHTOOL_SRXFH)
470 info_size = (offsetof(struct ethtool_rxnfc, data) +
473 if (copy_from_user(&info, useraddr, info_size))
476 rc = dev->ethtool_ops->set_rxnfc(dev, &info);
480 if (cmd == ETHTOOL_SRXCLSRLINS &&
481 copy_to_user(useraddr, &info, info_size))
487 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
488 u32 cmd, void __user *useraddr)
490 struct ethtool_rxnfc info;
491 size_t info_size = sizeof(info);
492 const struct ethtool_ops *ops = dev->ethtool_ops;
494 void *rule_buf = NULL;
499 /* struct ethtool_rxnfc was originally defined for
500 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
501 * members. User-space might still be using that
503 if (cmd == ETHTOOL_GRXFH)
504 info_size = (offsetof(struct ethtool_rxnfc, data) +
507 if (copy_from_user(&info, useraddr, info_size))
510 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
511 if (info.rule_cnt > 0) {
512 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
513 rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
520 ret = ops->get_rxnfc(dev, &info, rule_buf);
525 if (copy_to_user(useraddr, &info, info_size))
529 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
530 if (copy_to_user(useraddr, rule_buf,
531 info.rule_cnt * sizeof(u32)))
542 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
543 void __user *useraddr)
545 u32 user_size, dev_size;
549 if (!dev->ethtool_ops->get_rxfh_indir_size ||
550 !dev->ethtool_ops->get_rxfh_indir)
552 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
556 if (copy_from_user(&user_size,
557 useraddr + offsetof(struct ethtool_rxfh_indir, size),
561 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
562 &dev_size, sizeof(dev_size)))
565 /* If the user buffer size is 0, this is just a query for the
566 * device table size. Otherwise, if it's smaller than the
567 * device table size it's an error.
569 if (user_size < dev_size)
570 return user_size == 0 ? 0 : -EINVAL;
572 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
576 ret = dev->ethtool_ops->get_rxfh_indir(dev, indir);
580 if (copy_to_user(useraddr +
581 offsetof(struct ethtool_rxfh_indir, ring_index[0]),
582 indir, dev_size * sizeof(indir[0])))
590 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
591 void __user *useraddr)
593 struct ethtool_rxnfc rx_rings;
594 u32 user_size, dev_size, i;
596 const struct ethtool_ops *ops = dev->ethtool_ops;
599 if (!ops->get_rxfh_indir_size || !ops->set_rxfh_indir ||
603 dev_size = ops->get_rxfh_indir_size(dev);
607 if (copy_from_user(&user_size,
608 useraddr + offsetof(struct ethtool_rxfh_indir, size),
612 if (user_size != 0 && user_size != dev_size)
615 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
619 rx_rings.cmd = ETHTOOL_GRXRINGS;
620 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
624 if (user_size == 0) {
625 for (i = 0; i < dev_size; i++)
626 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
628 if (copy_from_user(indir,
630 offsetof(struct ethtool_rxfh_indir,
632 dev_size * sizeof(indir[0]))) {
637 /* Validate ring indices */
638 for (i = 0; i < dev_size; i++) {
639 if (indir[i] >= rx_rings.data) {
646 ret = ops->set_rxfh_indir(dev, indir);
653 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
655 struct ethtool_regs regs;
656 const struct ethtool_ops *ops = dev->ethtool_ops;
660 if (!ops->get_regs || !ops->get_regs_len)
663 if (copy_from_user(®s, useraddr, sizeof(regs)))
666 reglen = ops->get_regs_len(dev);
667 if (regs.len > reglen)
670 regbuf = vzalloc(reglen);
671 if (reglen && !regbuf)
674 ops->get_regs(dev, ®s, regbuf);
677 if (copy_to_user(useraddr, ®s, sizeof(regs)))
679 useraddr += offsetof(struct ethtool_regs, data);
680 if (regbuf && copy_to_user(useraddr, regbuf, regs.len))
689 static int ethtool_reset(struct net_device *dev, char __user *useraddr)
691 struct ethtool_value reset;
694 if (!dev->ethtool_ops->reset)
697 if (copy_from_user(&reset, useraddr, sizeof(reset)))
700 ret = dev->ethtool_ops->reset(dev, &reset.data);
704 if (copy_to_user(useraddr, &reset, sizeof(reset)))
709 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
711 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
713 if (!dev->ethtool_ops->get_wol)
716 dev->ethtool_ops->get_wol(dev, &wol);
718 if (copy_to_user(useraddr, &wol, sizeof(wol)))
723 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
725 struct ethtool_wolinfo wol;
727 if (!dev->ethtool_ops->set_wol)
730 if (copy_from_user(&wol, useraddr, sizeof(wol)))
733 return dev->ethtool_ops->set_wol(dev, &wol);
736 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
738 struct ethtool_eee edata;
741 if (!dev->ethtool_ops->get_eee)
744 memset(&edata, 0, sizeof(struct ethtool_eee));
745 edata.cmd = ETHTOOL_GEEE;
746 rc = dev->ethtool_ops->get_eee(dev, &edata);
751 if (copy_to_user(useraddr, &edata, sizeof(edata)))
757 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
759 struct ethtool_eee edata;
761 if (!dev->ethtool_ops->set_eee)
764 if (copy_from_user(&edata, useraddr, sizeof(edata)))
767 return dev->ethtool_ops->set_eee(dev, &edata);
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_link(struct net_device *dev, char __user *useraddr)
780 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
782 if (!dev->ethtool_ops->get_link)
785 edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
787 if (copy_to_user(useraddr, &edata, sizeof(edata)))
792 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
793 int (*getter)(struct net_device *,
794 struct ethtool_eeprom *, u8 *),
797 struct ethtool_eeprom eeprom;
798 void __user *userbuf = useraddr + sizeof(eeprom);
803 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
806 /* Check for wrap and zero */
807 if (eeprom.offset + eeprom.len <= eeprom.offset)
810 /* Check for exceeding total eeprom len */
811 if (eeprom.offset + eeprom.len > total_len)
814 data = kmalloc(PAGE_SIZE, GFP_USER);
818 bytes_remaining = eeprom.len;
819 while (bytes_remaining > 0) {
820 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
822 ret = getter(dev, &eeprom, data);
825 if (copy_to_user(userbuf, data, eeprom.len)) {
829 userbuf += eeprom.len;
830 eeprom.offset += eeprom.len;
831 bytes_remaining -= eeprom.len;
834 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
835 eeprom.offset -= eeprom.len;
836 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
843 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
845 const struct ethtool_ops *ops = dev->ethtool_ops;
847 if (!ops->get_eeprom || !ops->get_eeprom_len)
850 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
851 ops->get_eeprom_len(dev));
854 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
856 struct ethtool_eeprom eeprom;
857 const struct ethtool_ops *ops = dev->ethtool_ops;
858 void __user *userbuf = useraddr + sizeof(eeprom);
863 if (!ops->set_eeprom || !ops->get_eeprom_len)
866 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
869 /* Check for wrap and zero */
870 if (eeprom.offset + eeprom.len <= eeprom.offset)
873 /* Check for exceeding total eeprom len */
874 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
877 data = kmalloc(PAGE_SIZE, GFP_USER);
881 bytes_remaining = eeprom.len;
882 while (bytes_remaining > 0) {
883 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
885 if (copy_from_user(data, userbuf, eeprom.len)) {
889 ret = ops->set_eeprom(dev, &eeprom, data);
892 userbuf += eeprom.len;
893 eeprom.offset += eeprom.len;
894 bytes_remaining -= eeprom.len;
901 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
902 void __user *useraddr)
904 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
906 if (!dev->ethtool_ops->get_coalesce)
909 dev->ethtool_ops->get_coalesce(dev, &coalesce);
911 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
916 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
917 void __user *useraddr)
919 struct ethtool_coalesce coalesce;
921 if (!dev->ethtool_ops->set_coalesce)
924 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
927 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
930 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
932 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
934 if (!dev->ethtool_ops->get_ringparam)
937 dev->ethtool_ops->get_ringparam(dev, &ringparam);
939 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
944 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
946 struct ethtool_ringparam ringparam;
948 if (!dev->ethtool_ops->set_ringparam)
951 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
954 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
957 static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
958 void __user *useraddr)
960 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
962 if (!dev->ethtool_ops->get_channels)
965 dev->ethtool_ops->get_channels(dev, &channels);
967 if (copy_to_user(useraddr, &channels, sizeof(channels)))
972 static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
973 void __user *useraddr)
975 struct ethtool_channels channels;
977 if (!dev->ethtool_ops->set_channels)
980 if (copy_from_user(&channels, useraddr, sizeof(channels)))
983 return dev->ethtool_ops->set_channels(dev, &channels);
986 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
988 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
990 if (!dev->ethtool_ops->get_pauseparam)
993 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
995 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1000 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1002 struct ethtool_pauseparam pauseparam;
1004 if (!dev->ethtool_ops->set_pauseparam)
1007 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1010 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1013 static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1015 struct ethtool_test test;
1016 const struct ethtool_ops *ops = dev->ethtool_ops;
1020 if (!ops->self_test || !ops->get_sset_count)
1023 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
1026 WARN_ON(test_len == 0);
1028 if (copy_from_user(&test, useraddr, sizeof(test)))
1031 test.len = test_len;
1032 data = kmalloc(test_len * sizeof(u64), GFP_USER);
1036 ops->self_test(dev, &test, data);
1039 if (copy_to_user(useraddr, &test, sizeof(test)))
1041 useraddr += sizeof(test);
1042 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1051 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1053 struct ethtool_gstrings gstrings;
1057 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1060 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
1066 data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
1070 __ethtool_get_strings(dev, gstrings.string_set, data);
1073 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1075 useraddr += sizeof(gstrings);
1076 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1085 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1087 struct ethtool_value id;
1089 const struct ethtool_ops *ops = dev->ethtool_ops;
1092 if (!ops->set_phys_id)
1098 if (copy_from_user(&id, useraddr, sizeof(id)))
1101 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
1105 /* Drop the RTNL lock while waiting, but prevent reentry or
1106 * removal of the device.
1113 /* Driver will handle this itself */
1114 schedule_timeout_interruptible(
1115 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
1117 /* Driver expects to be called at twice the frequency in rc */
1118 int n = rc * 2, i, interval = HZ / n;
1120 /* Count down seconds */
1122 /* Count down iterations per second */
1126 rc = ops->set_phys_id(dev,
1127 (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
1131 schedule_timeout_interruptible(interval);
1132 } while (!signal_pending(current) && --i != 0);
1133 } while (!signal_pending(current) &&
1134 (id.data == 0 || --id.data != 0));
1141 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
1145 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1147 struct ethtool_stats stats;
1148 const struct ethtool_ops *ops = dev->ethtool_ops;
1152 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1155 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
1158 WARN_ON(n_stats == 0);
1160 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1163 stats.n_stats = n_stats;
1164 data = kmalloc(n_stats * sizeof(u64), GFP_USER);
1168 ops->get_ethtool_stats(dev, &stats, data);
1171 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1173 useraddr += sizeof(stats);
1174 if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
1183 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
1185 struct ethtool_perm_addr epaddr;
1187 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
1190 if (epaddr.size < dev->addr_len)
1192 epaddr.size = dev->addr_len;
1194 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
1196 useraddr += sizeof(epaddr);
1197 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
1202 static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
1203 u32 cmd, u32 (*actor)(struct net_device *))
1205 struct ethtool_value edata = { .cmd = cmd };
1210 edata.data = actor(dev);
1212 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1217 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
1218 void (*actor)(struct net_device *, u32))
1220 struct ethtool_value edata;
1225 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1228 actor(dev, edata.data);
1232 static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
1233 int (*actor)(struct net_device *, u32))
1235 struct ethtool_value edata;
1240 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1243 return actor(dev, edata.data);
1246 static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
1247 char __user *useraddr)
1249 struct ethtool_flash efl;
1251 if (copy_from_user(&efl, useraddr, sizeof(efl)))
1254 if (!dev->ethtool_ops->flash_device)
1257 efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
1259 return dev->ethtool_ops->flash_device(dev, &efl);
1262 static int ethtool_set_dump(struct net_device *dev,
1263 void __user *useraddr)
1265 struct ethtool_dump dump;
1267 if (!dev->ethtool_ops->set_dump)
1270 if (copy_from_user(&dump, useraddr, sizeof(dump)))
1273 return dev->ethtool_ops->set_dump(dev, &dump);
1276 static int ethtool_get_dump_flag(struct net_device *dev,
1277 void __user *useraddr)
1280 struct ethtool_dump dump;
1281 const struct ethtool_ops *ops = dev->ethtool_ops;
1283 if (!ops->get_dump_flag)
1286 if (copy_from_user(&dump, useraddr, sizeof(dump)))
1289 ret = ops->get_dump_flag(dev, &dump);
1293 if (copy_to_user(useraddr, &dump, sizeof(dump)))
1298 static int ethtool_get_dump_data(struct net_device *dev,
1299 void __user *useraddr)
1303 struct ethtool_dump dump, tmp;
1304 const struct ethtool_ops *ops = dev->ethtool_ops;
1307 if (!ops->get_dump_data || !ops->get_dump_flag)
1310 if (copy_from_user(&dump, useraddr, sizeof(dump)))
1313 memset(&tmp, 0, sizeof(tmp));
1314 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
1315 ret = ops->get_dump_flag(dev, &tmp);
1319 len = (tmp.len > dump.len) ? dump.len : tmp.len;
1323 data = vzalloc(tmp.len);
1326 ret = ops->get_dump_data(dev, &dump, data);
1330 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
1334 useraddr += offsetof(struct ethtool_dump, data);
1335 if (copy_to_user(useraddr, data, len))
1342 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
1345 struct ethtool_ts_info info;
1346 const struct ethtool_ops *ops = dev->ethtool_ops;
1347 struct phy_device *phydev = dev->phydev;
1349 memset(&info, 0, sizeof(info));
1350 info.cmd = ETHTOOL_GET_TS_INFO;
1352 if (phydev && phydev->drv && phydev->drv->ts_info) {
1353 err = phydev->drv->ts_info(phydev, &info);
1354 } else if (ops->get_ts_info) {
1355 err = ops->get_ts_info(dev, &info);
1357 info.so_timestamping =
1358 SOF_TIMESTAMPING_RX_SOFTWARE |
1359 SOF_TIMESTAMPING_SOFTWARE;
1360 info.phc_index = -1;
1366 if (copy_to_user(useraddr, &info, sizeof(info)))
1372 static int ethtool_get_module_info(struct net_device *dev,
1373 void __user *useraddr)
1376 struct ethtool_modinfo modinfo;
1377 const struct ethtool_ops *ops = dev->ethtool_ops;
1379 if (!ops->get_module_info)
1382 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
1385 ret = ops->get_module_info(dev, &modinfo);
1389 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
1395 static int ethtool_get_module_eeprom(struct net_device *dev,
1396 void __user *useraddr)
1399 struct ethtool_modinfo modinfo;
1400 const struct ethtool_ops *ops = dev->ethtool_ops;
1402 if (!ops->get_module_info || !ops->get_module_eeprom)
1405 ret = ops->get_module_info(dev, &modinfo);
1409 return ethtool_get_any_eeprom(dev, useraddr, ops->get_module_eeprom,
1410 modinfo.eeprom_len);
1413 /* The main entry point in this file. Called from net/core/dev.c */
1415 int dev_ethtool(struct net *net, struct ifreq *ifr)
1417 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
1418 void __user *useraddr = ifr->ifr_data;
1423 if (!dev || !netif_device_present(dev))
1426 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd)))
1429 /* Allow some commands to be done by anyone */
1432 case ETHTOOL_GDRVINFO:
1433 case ETHTOOL_GMSGLVL:
1435 case ETHTOOL_GCOALESCE:
1436 case ETHTOOL_GRINGPARAM:
1437 case ETHTOOL_GPAUSEPARAM:
1438 case ETHTOOL_GRXCSUM:
1439 case ETHTOOL_GTXCSUM:
1441 case ETHTOOL_GSSET_INFO:
1442 case ETHTOOL_GSTRINGS:
1443 case ETHTOOL_GSTATS:
1445 case ETHTOOL_GPERMADDR:
1449 case ETHTOOL_GFLAGS:
1450 case ETHTOOL_GPFLAGS:
1452 case ETHTOOL_GRXRINGS:
1453 case ETHTOOL_GRXCLSRLCNT:
1454 case ETHTOOL_GRXCLSRULE:
1455 case ETHTOOL_GRXCLSRLALL:
1456 case ETHTOOL_GRXFHINDIR:
1457 case ETHTOOL_GFEATURES:
1458 case ETHTOOL_GCHANNELS:
1459 case ETHTOOL_GET_TS_INFO:
1463 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
1467 if (dev->ethtool_ops->begin) {
1468 rc = dev->ethtool_ops->begin(dev);
1472 old_features = dev->features;
1476 rc = ethtool_get_settings(dev, useraddr);
1479 rc = ethtool_set_settings(dev, useraddr);
1481 case ETHTOOL_GDRVINFO:
1482 rc = ethtool_get_drvinfo(dev, useraddr);
1485 rc = ethtool_get_regs(dev, useraddr);
1488 rc = ethtool_get_wol(dev, useraddr);
1491 rc = ethtool_set_wol(dev, useraddr);
1493 case ETHTOOL_GMSGLVL:
1494 rc = ethtool_get_value(dev, useraddr, ethcmd,
1495 dev->ethtool_ops->get_msglevel);
1497 case ETHTOOL_SMSGLVL:
1498 rc = ethtool_set_value_void(dev, useraddr,
1499 dev->ethtool_ops->set_msglevel);
1502 rc = ethtool_get_eee(dev, useraddr);
1505 rc = ethtool_set_eee(dev, useraddr);
1507 case ETHTOOL_NWAY_RST:
1508 rc = ethtool_nway_reset(dev);
1511 rc = ethtool_get_link(dev, useraddr);
1513 case ETHTOOL_GEEPROM:
1514 rc = ethtool_get_eeprom(dev, useraddr);
1516 case ETHTOOL_SEEPROM:
1517 rc = ethtool_set_eeprom(dev, useraddr);
1519 case ETHTOOL_GCOALESCE:
1520 rc = ethtool_get_coalesce(dev, useraddr);
1522 case ETHTOOL_SCOALESCE:
1523 rc = ethtool_set_coalesce(dev, useraddr);
1525 case ETHTOOL_GRINGPARAM:
1526 rc = ethtool_get_ringparam(dev, useraddr);
1528 case ETHTOOL_SRINGPARAM:
1529 rc = ethtool_set_ringparam(dev, useraddr);
1531 case ETHTOOL_GPAUSEPARAM:
1532 rc = ethtool_get_pauseparam(dev, useraddr);
1534 case ETHTOOL_SPAUSEPARAM:
1535 rc = ethtool_set_pauseparam(dev, useraddr);
1538 rc = ethtool_self_test(dev, useraddr);
1540 case ETHTOOL_GSTRINGS:
1541 rc = ethtool_get_strings(dev, useraddr);
1543 case ETHTOOL_PHYS_ID:
1544 rc = ethtool_phys_id(dev, useraddr);
1546 case ETHTOOL_GSTATS:
1547 rc = ethtool_get_stats(dev, useraddr);
1549 case ETHTOOL_GPERMADDR:
1550 rc = ethtool_get_perm_addr(dev, useraddr);
1552 case ETHTOOL_GFLAGS:
1553 rc = ethtool_get_value(dev, useraddr, ethcmd,
1554 __ethtool_get_flags);
1556 case ETHTOOL_SFLAGS:
1557 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
1559 case ETHTOOL_GPFLAGS:
1560 rc = ethtool_get_value(dev, useraddr, ethcmd,
1561 dev->ethtool_ops->get_priv_flags);
1563 case ETHTOOL_SPFLAGS:
1564 rc = ethtool_set_value(dev, useraddr,
1565 dev->ethtool_ops->set_priv_flags);
1568 case ETHTOOL_GRXRINGS:
1569 case ETHTOOL_GRXCLSRLCNT:
1570 case ETHTOOL_GRXCLSRULE:
1571 case ETHTOOL_GRXCLSRLALL:
1572 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
1575 case ETHTOOL_SRXCLSRLDEL:
1576 case ETHTOOL_SRXCLSRLINS:
1577 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
1579 case ETHTOOL_FLASHDEV:
1580 rc = ethtool_flash_device(dev, useraddr);
1583 rc = ethtool_reset(dev, useraddr);
1585 case ETHTOOL_GSSET_INFO:
1586 rc = ethtool_get_sset_info(dev, useraddr);
1588 case ETHTOOL_GRXFHINDIR:
1589 rc = ethtool_get_rxfh_indir(dev, useraddr);
1591 case ETHTOOL_SRXFHINDIR:
1592 rc = ethtool_set_rxfh_indir(dev, useraddr);
1594 case ETHTOOL_GFEATURES:
1595 rc = ethtool_get_features(dev, useraddr);
1597 case ETHTOOL_SFEATURES:
1598 rc = ethtool_set_features(dev, useraddr);
1600 case ETHTOOL_GTXCSUM:
1601 case ETHTOOL_GRXCSUM:
1607 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
1609 case ETHTOOL_STXCSUM:
1610 case ETHTOOL_SRXCSUM:
1616 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
1618 case ETHTOOL_GCHANNELS:
1619 rc = ethtool_get_channels(dev, useraddr);
1621 case ETHTOOL_SCHANNELS:
1622 rc = ethtool_set_channels(dev, useraddr);
1624 case ETHTOOL_SET_DUMP:
1625 rc = ethtool_set_dump(dev, useraddr);
1627 case ETHTOOL_GET_DUMP_FLAG:
1628 rc = ethtool_get_dump_flag(dev, useraddr);
1630 case ETHTOOL_GET_DUMP_DATA:
1631 rc = ethtool_get_dump_data(dev, useraddr);
1633 case ETHTOOL_GET_TS_INFO:
1634 rc = ethtool_get_ts_info(dev, useraddr);
1636 case ETHTOOL_GMODULEINFO:
1637 rc = ethtool_get_module_info(dev, useraddr);
1639 case ETHTOOL_GMODULEEEPROM:
1640 rc = ethtool_get_module_eeprom(dev, useraddr);
1646 if (dev->ethtool_ops->complete)
1647 dev->ethtool_ops->complete(dev);
1649 if (old_features != dev->features)
1650 netdev_features_change(dev);