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>
24 #include <linux/rtnetlink.h>
25 #include <linux/sched.h>
28 * Some useful ethtool_ops methods that're device independent.
29 * If we find that all drivers want to do the same thing here,
30 * we can turn these into dev_() function calls.
33 u32
ethtool_op_get_link(struct net_device
*dev
)
35 return netif_carrier_ok(dev
) ? 1 : 0;
37 EXPORT_SYMBOL(ethtool_op_get_link
);
39 u32
ethtool_op_get_tx_csum(struct net_device
*dev
)
41 return (dev
->features
& NETIF_F_ALL_CSUM
) != 0;
43 EXPORT_SYMBOL(ethtool_op_get_tx_csum
);
45 int ethtool_op_set_tx_csum(struct net_device
*dev
, u32 data
)
48 dev
->features
|= NETIF_F_IP_CSUM
;
50 dev
->features
&= ~NETIF_F_IP_CSUM
;
54 EXPORT_SYMBOL(ethtool_op_set_tx_csum
);
56 int ethtool_op_set_tx_hw_csum(struct net_device
*dev
, u32 data
)
59 dev
->features
|= NETIF_F_HW_CSUM
;
61 dev
->features
&= ~NETIF_F_HW_CSUM
;
65 EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum
);
67 int ethtool_op_set_tx_ipv6_csum(struct net_device
*dev
, u32 data
)
70 dev
->features
|= NETIF_F_IP_CSUM
| NETIF_F_IPV6_CSUM
;
72 dev
->features
&= ~(NETIF_F_IP_CSUM
| NETIF_F_IPV6_CSUM
);
76 EXPORT_SYMBOL(ethtool_op_set_tx_ipv6_csum
);
78 u32
ethtool_op_get_sg(struct net_device
*dev
)
80 return (dev
->features
& NETIF_F_SG
) != 0;
82 EXPORT_SYMBOL(ethtool_op_get_sg
);
84 int ethtool_op_set_sg(struct net_device
*dev
, u32 data
)
87 dev
->features
|= NETIF_F_SG
;
89 dev
->features
&= ~NETIF_F_SG
;
93 EXPORT_SYMBOL(ethtool_op_set_sg
);
95 u32
ethtool_op_get_tso(struct net_device
*dev
)
97 return (dev
->features
& NETIF_F_TSO
) != 0;
99 EXPORT_SYMBOL(ethtool_op_get_tso
);
101 int ethtool_op_set_tso(struct net_device
*dev
, u32 data
)
104 dev
->features
|= NETIF_F_TSO
;
106 dev
->features
&= ~NETIF_F_TSO
;
110 EXPORT_SYMBOL(ethtool_op_set_tso
);
112 u32
ethtool_op_get_ufo(struct net_device
*dev
)
114 return (dev
->features
& NETIF_F_UFO
) != 0;
116 EXPORT_SYMBOL(ethtool_op_get_ufo
);
118 int ethtool_op_set_ufo(struct net_device
*dev
, u32 data
)
121 dev
->features
|= NETIF_F_UFO
;
123 dev
->features
&= ~NETIF_F_UFO
;
126 EXPORT_SYMBOL(ethtool_op_set_ufo
);
128 /* the following list of flags are the same as their associated
129 * NETIF_F_xxx values in include/linux/netdevice.h
131 static const u32 flags_dup_features
=
132 (ETH_FLAG_LRO
| ETH_FLAG_RXVLAN
| ETH_FLAG_TXVLAN
| ETH_FLAG_NTUPLE
|
135 u32
ethtool_op_get_flags(struct net_device
*dev
)
137 /* in the future, this function will probably contain additional
138 * handling for flags which are not so easily handled
139 * by a simple masking operation
142 return dev
->features
& flags_dup_features
;
144 EXPORT_SYMBOL(ethtool_op_get_flags
);
146 /* Check if device can enable (or disable) particular feature coded in "data"
147 * argument. Flags "supported" describe features that can be toggled by device.
148 * If feature can not be toggled, it state (enabled or disabled) must match
149 * hardcoded device features state, otherwise flags are marked as invalid.
151 bool ethtool_invalid_flags(struct net_device
*dev
, u32 data
, u32 supported
)
153 u32 features
= dev
->features
& flags_dup_features
;
154 /* "data" can contain only flags_dup_features bits,
155 * see __ethtool_set_flags */
157 return (features
& ~supported
) != (data
& ~supported
);
159 EXPORT_SYMBOL(ethtool_invalid_flags
);
161 int ethtool_op_set_flags(struct net_device
*dev
, u32 data
, u32 supported
)
163 if (ethtool_invalid_flags(dev
, data
, supported
))
166 dev
->features
= ((dev
->features
& ~flags_dup_features
) |
167 (data
& flags_dup_features
));
170 EXPORT_SYMBOL(ethtool_op_set_flags
);
172 void ethtool_ntuple_flush(struct net_device
*dev
)
174 struct ethtool_rx_ntuple_flow_spec_container
*fsc
, *f
;
176 list_for_each_entry_safe(fsc
, f
, &dev
->ethtool_ntuple_list
.list
, list
) {
177 list_del(&fsc
->list
);
180 dev
->ethtool_ntuple_list
.count
= 0;
182 EXPORT_SYMBOL(ethtool_ntuple_flush
);
184 /* Handlers for each ethtool command */
186 #define ETHTOOL_DEV_FEATURE_WORDS 1
188 static void ethtool_get_features_compat(struct net_device
*dev
,
189 struct ethtool_get_features_block
*features
)
191 if (!dev
->ethtool_ops
)
194 /* getting RX checksum */
195 if (dev
->ethtool_ops
->get_rx_csum
)
196 if (dev
->ethtool_ops
->get_rx_csum(dev
))
197 features
[0].active
|= NETIF_F_RXCSUM
;
199 /* mark legacy-changeable features */
200 if (dev
->ethtool_ops
->set_sg
)
201 features
[0].available
|= NETIF_F_SG
;
202 if (dev
->ethtool_ops
->set_tx_csum
)
203 features
[0].available
|= NETIF_F_ALL_CSUM
;
204 if (dev
->ethtool_ops
->set_tso
)
205 features
[0].available
|= NETIF_F_ALL_TSO
;
206 if (dev
->ethtool_ops
->set_rx_csum
)
207 features
[0].available
|= NETIF_F_RXCSUM
;
208 if (dev
->ethtool_ops
->set_flags
)
209 features
[0].available
|= flags_dup_features
;
212 static int ethtool_set_feature_compat(struct net_device
*dev
,
213 int (*legacy_set
)(struct net_device
*, u32
),
214 struct ethtool_set_features_block
*features
, u32 mask
)
221 if (!(features
[0].valid
& mask
))
224 features
[0].valid
&= ~mask
;
226 do_set
= !!(features
[0].requested
& mask
);
228 if (legacy_set(dev
, do_set
) < 0)
230 "Legacy feature change (%s) failed for 0x%08x\n",
231 do_set
? "set" : "clear", mask
);
236 static int ethtool_set_flags_compat(struct net_device
*dev
,
237 int (*legacy_set
)(struct net_device
*, u32
),
238 struct ethtool_set_features_block
*features
, u32 mask
)
245 if (!(features
[0].valid
& mask
))
248 value
= dev
->features
& ~features
[0].valid
;
249 value
|= features
[0].requested
;
251 features
[0].valid
&= ~mask
;
253 if (legacy_set(dev
, value
& mask
) < 0)
254 netdev_info(dev
, "Legacy flags change failed\n");
259 static int ethtool_set_features_compat(struct net_device
*dev
,
260 struct ethtool_set_features_block
*features
)
264 if (!dev
->ethtool_ops
)
267 compat
= ethtool_set_feature_compat(dev
, dev
->ethtool_ops
->set_sg
,
268 features
, NETIF_F_SG
);
269 compat
|= ethtool_set_feature_compat(dev
, dev
->ethtool_ops
->set_tx_csum
,
270 features
, NETIF_F_ALL_CSUM
);
271 compat
|= ethtool_set_feature_compat(dev
, dev
->ethtool_ops
->set_tso
,
272 features
, NETIF_F_ALL_TSO
);
273 compat
|= ethtool_set_feature_compat(dev
, dev
->ethtool_ops
->set_rx_csum
,
274 features
, NETIF_F_RXCSUM
);
275 compat
|= ethtool_set_flags_compat(dev
, dev
->ethtool_ops
->set_flags
,
276 features
, flags_dup_features
);
281 static int ethtool_get_features(struct net_device
*dev
, void __user
*useraddr
)
283 struct ethtool_gfeatures cmd
= {
284 .cmd
= ETHTOOL_GFEATURES
,
285 .size
= ETHTOOL_DEV_FEATURE_WORDS
,
287 struct ethtool_get_features_block features
[ETHTOOL_DEV_FEATURE_WORDS
] = {
289 .available
= dev
->hw_features
,
290 .requested
= dev
->wanted_features
,
291 .active
= dev
->features
,
292 .never_changed
= NETIF_F_NEVER_CHANGE
,
295 u32 __user
*sizeaddr
;
298 ethtool_get_features_compat(dev
, features
);
300 sizeaddr
= useraddr
+ offsetof(struct ethtool_gfeatures
, size
);
301 if (get_user(copy_size
, sizeaddr
))
304 if (copy_size
> ETHTOOL_DEV_FEATURE_WORDS
)
305 copy_size
= ETHTOOL_DEV_FEATURE_WORDS
;
307 if (copy_to_user(useraddr
, &cmd
, sizeof(cmd
)))
309 useraddr
+= sizeof(cmd
);
310 if (copy_to_user(useraddr
, features
, copy_size
* sizeof(*features
)))
316 static int ethtool_set_features(struct net_device
*dev
, void __user
*useraddr
)
318 struct ethtool_sfeatures cmd
;
319 struct ethtool_set_features_block features
[ETHTOOL_DEV_FEATURE_WORDS
];
322 if (copy_from_user(&cmd
, useraddr
, sizeof(cmd
)))
324 useraddr
+= sizeof(cmd
);
326 if (cmd
.size
!= ETHTOOL_DEV_FEATURE_WORDS
)
329 if (copy_from_user(features
, useraddr
, sizeof(features
)))
332 if (features
[0].valid
& ~NETIF_F_ETHTOOL_BITS
)
335 if (ethtool_set_features_compat(dev
, features
))
336 ret
|= ETHTOOL_F_COMPAT
;
338 if (features
[0].valid
& ~dev
->hw_features
) {
339 features
[0].valid
&= dev
->hw_features
;
340 ret
|= ETHTOOL_F_UNSUPPORTED
;
343 dev
->wanted_features
&= ~features
[0].valid
;
344 dev
->wanted_features
|= features
[0].valid
& features
[0].requested
;
345 __netdev_update_features(dev
);
347 if ((dev
->wanted_features
^ dev
->features
) & features
[0].valid
)
348 ret
|= ETHTOOL_F_WISH
;
353 static const char netdev_features_strings
[ETHTOOL_DEV_FEATURE_WORDS
* 32][ETH_GSTRING_LEN
] = {
354 /* NETIF_F_SG */ "tx-scatter-gather",
355 /* NETIF_F_IP_CSUM */ "tx-checksum-ipv4",
356 /* NETIF_F_NO_CSUM */ "tx-checksum-unneeded",
357 /* NETIF_F_HW_CSUM */ "tx-checksum-ip-generic",
358 /* NETIF_F_IPV6_CSUM */ "tx-checksum-ipv6",
359 /* NETIF_F_HIGHDMA */ "highdma",
360 /* NETIF_F_FRAGLIST */ "tx-scatter-gather-fraglist",
361 /* NETIF_F_HW_VLAN_TX */ "tx-vlan-hw-insert",
363 /* NETIF_F_HW_VLAN_RX */ "rx-vlan-hw-parse",
364 /* NETIF_F_HW_VLAN_FILTER */ "rx-vlan-filter",
365 /* NETIF_F_VLAN_CHALLENGED */ "vlan-challenged",
366 /* NETIF_F_GSO */ "tx-generic-segmentation",
367 /* NETIF_F_LLTX */ "tx-lockless",
368 /* NETIF_F_NETNS_LOCAL */ "netns-local",
369 /* NETIF_F_GRO */ "rx-gro",
370 /* NETIF_F_LRO */ "rx-lro",
372 /* NETIF_F_TSO */ "tx-tcp-segmentation",
373 /* NETIF_F_UFO */ "tx-udp-fragmentation",
374 /* NETIF_F_GSO_ROBUST */ "tx-gso-robust",
375 /* NETIF_F_TSO_ECN */ "tx-tcp-ecn-segmentation",
376 /* NETIF_F_TSO6 */ "tx-tcp6-segmentation",
377 /* NETIF_F_FSO */ "tx-fcoe-segmentation",
381 /* NETIF_F_FCOE_CRC */ "tx-checksum-fcoe-crc",
382 /* NETIF_F_SCTP_CSUM */ "tx-checksum-sctp",
383 /* NETIF_F_FCOE_MTU */ "fcoe-mtu",
384 /* NETIF_F_NTUPLE */ "rx-ntuple-filter",
385 /* NETIF_F_RXHASH */ "rx-hashing",
386 /* NETIF_F_RXCSUM */ "rx-checksum",
387 /* NETIF_F_NOCACHE_COPY */ "tx-nocache-copy",
388 /* NETIF_F_LOOPBACK */ "loopback",
391 static int __ethtool_get_sset_count(struct net_device
*dev
, int sset
)
393 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
395 if (sset
== ETH_SS_FEATURES
)
396 return ARRAY_SIZE(netdev_features_strings
);
398 if (ops
&& ops
->get_sset_count
&& ops
->get_strings
)
399 return ops
->get_sset_count(dev
, sset
);
404 static void __ethtool_get_strings(struct net_device
*dev
,
405 u32 stringset
, u8
*data
)
407 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
409 if (stringset
== ETH_SS_FEATURES
)
410 memcpy(data
, netdev_features_strings
,
411 sizeof(netdev_features_strings
));
413 /* ops->get_strings is valid because checked earlier */
414 ops
->get_strings(dev
, stringset
, data
);
417 static u32
ethtool_get_feature_mask(u32 eth_cmd
)
419 /* feature masks of legacy discrete ethtool ops */
422 case ETHTOOL_GTXCSUM
:
423 case ETHTOOL_STXCSUM
:
424 return NETIF_F_ALL_CSUM
| NETIF_F_SCTP_CSUM
;
425 case ETHTOOL_GRXCSUM
:
426 case ETHTOOL_SRXCSUM
:
427 return NETIF_F_RXCSUM
;
433 return NETIF_F_ALL_TSO
;
448 static void *__ethtool_get_one_feature_actor(struct net_device
*dev
, u32 ethcmd
)
450 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
456 case ETHTOOL_GTXCSUM
:
457 return ops
->get_tx_csum
;
458 case ETHTOOL_GRXCSUM
:
459 return ops
->get_rx_csum
;
471 static u32
__ethtool_get_rx_csum_oldbug(struct net_device
*dev
)
473 return !!(dev
->features
& NETIF_F_ALL_CSUM
);
476 static int ethtool_get_one_feature(struct net_device
*dev
,
477 char __user
*useraddr
, u32 ethcmd
)
479 u32 mask
= ethtool_get_feature_mask(ethcmd
);
480 struct ethtool_value edata
= {
482 .data
= !!(dev
->features
& mask
),
485 /* compatibility with discrete get_ ops */
486 if (!(dev
->hw_features
& mask
)) {
487 u32 (*actor
)(struct net_device
*);
489 actor
= __ethtool_get_one_feature_actor(dev
, ethcmd
);
491 /* bug compatibility with old get_rx_csum */
492 if (ethcmd
== ETHTOOL_GRXCSUM
&& !actor
)
493 actor
= __ethtool_get_rx_csum_oldbug
;
496 edata
.data
= actor(dev
);
499 if (copy_to_user(useraddr
, &edata
, sizeof(edata
)))
504 static int __ethtool_set_tx_csum(struct net_device
*dev
, u32 data
);
505 static int __ethtool_set_rx_csum(struct net_device
*dev
, u32 data
);
506 static int __ethtool_set_sg(struct net_device
*dev
, u32 data
);
507 static int __ethtool_set_tso(struct net_device
*dev
, u32 data
);
508 static int __ethtool_set_ufo(struct net_device
*dev
, u32 data
);
510 static int ethtool_set_one_feature(struct net_device
*dev
,
511 void __user
*useraddr
, u32 ethcmd
)
513 struct ethtool_value edata
;
516 if (copy_from_user(&edata
, useraddr
, sizeof(edata
)))
519 mask
= ethtool_get_feature_mask(ethcmd
);
520 mask
&= dev
->hw_features
;
523 dev
->wanted_features
|= mask
;
525 dev
->wanted_features
&= ~mask
;
527 __netdev_update_features(dev
);
531 /* Driver is not converted to ndo_fix_features or does not
532 * support changing this offload. In the latter case it won't
533 * have corresponding ethtool_ops field set.
535 * Following part is to be removed after all drivers advertise
536 * their changeable features in netdev->hw_features and stop
537 * using discrete offload setting ops.
541 case ETHTOOL_STXCSUM
:
542 return __ethtool_set_tx_csum(dev
, edata
.data
);
543 case ETHTOOL_SRXCSUM
:
544 return __ethtool_set_rx_csum(dev
, edata
.data
);
546 return __ethtool_set_sg(dev
, edata
.data
);
548 return __ethtool_set_tso(dev
, edata
.data
);
550 return __ethtool_set_ufo(dev
, edata
.data
);
556 int __ethtool_set_flags(struct net_device
*dev
, u32 data
)
560 if (data
& ~flags_dup_features
)
563 /* legacy set_flags() op */
564 if (dev
->ethtool_ops
->set_flags
) {
565 if (unlikely(dev
->hw_features
& flags_dup_features
))
567 "driver BUG: mixed hw_features and set_flags()\n");
568 return dev
->ethtool_ops
->set_flags(dev
, data
);
571 /* allow changing only bits set in hw_features */
572 changed
= (data
^ dev
->features
) & flags_dup_features
;
573 if (changed
& ~dev
->hw_features
)
574 return (changed
& dev
->hw_features
) ? -EINVAL
: -EOPNOTSUPP
;
576 dev
->wanted_features
=
577 (dev
->wanted_features
& ~changed
) | (data
& dev
->hw_features
);
579 __netdev_update_features(dev
);
584 static int ethtool_get_settings(struct net_device
*dev
, void __user
*useraddr
)
586 struct ethtool_cmd cmd
= { .cmd
= ETHTOOL_GSET
};
589 if (!dev
->ethtool_ops
->get_settings
)
592 err
= dev
->ethtool_ops
->get_settings(dev
, &cmd
);
596 if (copy_to_user(useraddr
, &cmd
, sizeof(cmd
)))
601 static int ethtool_set_settings(struct net_device
*dev
, void __user
*useraddr
)
603 struct ethtool_cmd cmd
;
605 if (!dev
->ethtool_ops
->set_settings
)
608 if (copy_from_user(&cmd
, useraddr
, sizeof(cmd
)))
611 return dev
->ethtool_ops
->set_settings(dev
, &cmd
);
614 static noinline_for_stack
int ethtool_get_drvinfo(struct net_device
*dev
,
615 void __user
*useraddr
)
617 struct ethtool_drvinfo info
;
618 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
620 memset(&info
, 0, sizeof(info
));
621 info
.cmd
= ETHTOOL_GDRVINFO
;
622 if (ops
&& ops
->get_drvinfo
) {
623 ops
->get_drvinfo(dev
, &info
);
624 } else if (dev
->dev
.parent
&& dev
->dev
.parent
->driver
) {
625 strlcpy(info
.bus_info
, dev_name(dev
->dev
.parent
),
626 sizeof(info
.bus_info
));
627 strlcpy(info
.driver
, dev
->dev
.parent
->driver
->name
,
628 sizeof(info
.driver
));
634 * this method of obtaining string set info is deprecated;
635 * Use ETHTOOL_GSSET_INFO instead.
637 if (ops
&& ops
->get_sset_count
) {
640 rc
= ops
->get_sset_count(dev
, ETH_SS_TEST
);
642 info
.testinfo_len
= rc
;
643 rc
= ops
->get_sset_count(dev
, ETH_SS_STATS
);
646 rc
= ops
->get_sset_count(dev
, ETH_SS_PRIV_FLAGS
);
648 info
.n_priv_flags
= rc
;
650 if (ops
&& ops
->get_regs_len
)
651 info
.regdump_len
= ops
->get_regs_len(dev
);
652 if (ops
&& ops
->get_eeprom_len
)
653 info
.eedump_len
= ops
->get_eeprom_len(dev
);
655 if (copy_to_user(useraddr
, &info
, sizeof(info
)))
660 static noinline_for_stack
int ethtool_get_sset_info(struct net_device
*dev
,
661 void __user
*useraddr
)
663 struct ethtool_sset_info info
;
665 int i
, idx
= 0, n_bits
= 0, ret
, rc
;
666 u32
*info_buf
= NULL
;
668 if (copy_from_user(&info
, useraddr
, sizeof(info
)))
671 /* store copy of mask, because we zero struct later on */
672 sset_mask
= info
.sset_mask
;
676 /* calculate size of return buffer */
677 n_bits
= hweight64(sset_mask
);
679 memset(&info
, 0, sizeof(info
));
680 info
.cmd
= ETHTOOL_GSSET_INFO
;
682 info_buf
= kzalloc(n_bits
* sizeof(u32
), GFP_USER
);
687 * fill return buffer based on input bitmask and successful
688 * get_sset_count return
690 for (i
= 0; i
< 64; i
++) {
691 if (!(sset_mask
& (1ULL << i
)))
694 rc
= __ethtool_get_sset_count(dev
, i
);
696 info
.sset_mask
|= (1ULL << i
);
697 info_buf
[idx
++] = rc
;
702 if (copy_to_user(useraddr
, &info
, sizeof(info
)))
705 useraddr
+= offsetof(struct ethtool_sset_info
, data
);
706 if (copy_to_user(useraddr
, info_buf
, idx
* sizeof(u32
)))
716 static noinline_for_stack
int ethtool_set_rxnfc(struct net_device
*dev
,
717 u32 cmd
, void __user
*useraddr
)
719 struct ethtool_rxnfc info
;
720 size_t info_size
= sizeof(info
);
722 if (!dev
->ethtool_ops
->set_rxnfc
)
725 /* struct ethtool_rxnfc was originally defined for
726 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
727 * members. User-space might still be using that
729 if (cmd
== ETHTOOL_SRXFH
)
730 info_size
= (offsetof(struct ethtool_rxnfc
, data
) +
733 if (copy_from_user(&info
, useraddr
, info_size
))
736 return dev
->ethtool_ops
->set_rxnfc(dev
, &info
);
739 static noinline_for_stack
int ethtool_get_rxnfc(struct net_device
*dev
,
740 u32 cmd
, void __user
*useraddr
)
742 struct ethtool_rxnfc info
;
743 size_t info_size
= sizeof(info
);
744 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
746 void *rule_buf
= NULL
;
751 /* struct ethtool_rxnfc was originally defined for
752 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
753 * members. User-space might still be using that
755 if (cmd
== ETHTOOL_GRXFH
)
756 info_size
= (offsetof(struct ethtool_rxnfc
, data
) +
759 if (copy_from_user(&info
, useraddr
, info_size
))
762 if (info
.cmd
== ETHTOOL_GRXCLSRLALL
) {
763 if (info
.rule_cnt
> 0) {
764 if (info
.rule_cnt
<= KMALLOC_MAX_SIZE
/ sizeof(u32
))
765 rule_buf
= kzalloc(info
.rule_cnt
* sizeof(u32
),
772 ret
= ops
->get_rxnfc(dev
, &info
, rule_buf
);
777 if (copy_to_user(useraddr
, &info
, info_size
))
781 useraddr
+= offsetof(struct ethtool_rxnfc
, rule_locs
);
782 if (copy_to_user(useraddr
, rule_buf
,
783 info
.rule_cnt
* sizeof(u32
)))
794 static noinline_for_stack
int ethtool_get_rxfh_indir(struct net_device
*dev
,
795 void __user
*useraddr
)
797 struct ethtool_rxfh_indir
*indir
;
802 if (!dev
->ethtool_ops
->get_rxfh_indir
)
805 if (copy_from_user(&table_size
,
806 useraddr
+ offsetof(struct ethtool_rxfh_indir
, size
),
811 (KMALLOC_MAX_SIZE
- sizeof(*indir
)) / sizeof(*indir
->ring_index
))
813 full_size
= sizeof(*indir
) + sizeof(*indir
->ring_index
) * table_size
;
814 indir
= kzalloc(full_size
, GFP_USER
);
818 indir
->cmd
= ETHTOOL_GRXFHINDIR
;
819 indir
->size
= table_size
;
820 ret
= dev
->ethtool_ops
->get_rxfh_indir(dev
, indir
);
824 if (copy_to_user(useraddr
, indir
, full_size
))
832 static noinline_for_stack
int ethtool_set_rxfh_indir(struct net_device
*dev
,
833 void __user
*useraddr
)
835 struct ethtool_rxfh_indir
*indir
;
840 if (!dev
->ethtool_ops
->set_rxfh_indir
)
843 if (copy_from_user(&table_size
,
844 useraddr
+ offsetof(struct ethtool_rxfh_indir
, size
),
849 (KMALLOC_MAX_SIZE
- sizeof(*indir
)) / sizeof(*indir
->ring_index
))
851 full_size
= sizeof(*indir
) + sizeof(*indir
->ring_index
) * table_size
;
852 indir
= kmalloc(full_size
, GFP_USER
);
856 if (copy_from_user(indir
, useraddr
, full_size
)) {
861 ret
= dev
->ethtool_ops
->set_rxfh_indir(dev
, indir
);
868 static void __rx_ntuple_filter_add(struct ethtool_rx_ntuple_list
*list
,
869 struct ethtool_rx_ntuple_flow_spec
*spec
,
870 struct ethtool_rx_ntuple_flow_spec_container
*fsc
)
873 /* don't add filters forever */
874 if (list
->count
>= ETHTOOL_MAX_NTUPLE_LIST_ENTRY
) {
875 /* free the container */
880 /* Copy the whole filter over */
881 fsc
->fs
.flow_type
= spec
->flow_type
;
882 memcpy(&fsc
->fs
.h_u
, &spec
->h_u
, sizeof(spec
->h_u
));
883 memcpy(&fsc
->fs
.m_u
, &spec
->m_u
, sizeof(spec
->m_u
));
885 fsc
->fs
.vlan_tag
= spec
->vlan_tag
;
886 fsc
->fs
.vlan_tag_mask
= spec
->vlan_tag_mask
;
887 fsc
->fs
.data
= spec
->data
;
888 fsc
->fs
.data_mask
= spec
->data_mask
;
889 fsc
->fs
.action
= spec
->action
;
891 /* add to the list */
892 list_add_tail_rcu(&fsc
->list
, &list
->list
);
897 * ethtool does not (or did not) set masks for flow parameters that are
898 * not specified, so if both value and mask are 0 then this must be
899 * treated as equivalent to a mask with all bits set. Implement that
900 * here rather than in drivers.
902 static void rx_ntuple_fix_masks(struct ethtool_rx_ntuple_flow_spec
*fs
)
904 struct ethtool_tcpip4_spec
*entry
= &fs
->h_u
.tcp_ip4_spec
;
905 struct ethtool_tcpip4_spec
*mask
= &fs
->m_u
.tcp_ip4_spec
;
907 if (fs
->flow_type
!= TCP_V4_FLOW
&&
908 fs
->flow_type
!= UDP_V4_FLOW
&&
909 fs
->flow_type
!= SCTP_V4_FLOW
)
912 if (!(entry
->ip4src
| mask
->ip4src
))
913 mask
->ip4src
= htonl(0xffffffff);
914 if (!(entry
->ip4dst
| mask
->ip4dst
))
915 mask
->ip4dst
= htonl(0xffffffff);
916 if (!(entry
->psrc
| mask
->psrc
))
917 mask
->psrc
= htons(0xffff);
918 if (!(entry
->pdst
| mask
->pdst
))
919 mask
->pdst
= htons(0xffff);
920 if (!(entry
->tos
| mask
->tos
))
922 if (!(fs
->vlan_tag
| fs
->vlan_tag_mask
))
923 fs
->vlan_tag_mask
= 0xffff;
924 if (!(fs
->data
| fs
->data_mask
))
925 fs
->data_mask
= 0xffffffffffffffffULL
;
928 static noinline_for_stack
int ethtool_set_rx_ntuple(struct net_device
*dev
,
929 void __user
*useraddr
)
931 struct ethtool_rx_ntuple cmd
;
932 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
933 struct ethtool_rx_ntuple_flow_spec_container
*fsc
= NULL
;
936 if (!ops
->set_rx_ntuple
)
939 if (!(dev
->features
& NETIF_F_NTUPLE
))
942 if (copy_from_user(&cmd
, useraddr
, sizeof(cmd
)))
945 rx_ntuple_fix_masks(&cmd
.fs
);
948 * Cache filter in dev struct for GET operation only if
949 * the underlying driver doesn't have its own GET operation, and
950 * only if the filter was added successfully. First make sure we
951 * can allocate the filter, then continue if successful.
953 if (!ops
->get_rx_ntuple
) {
954 fsc
= kmalloc(sizeof(*fsc
), GFP_ATOMIC
);
959 ret
= ops
->set_rx_ntuple(dev
, &cmd
);
965 if (!ops
->get_rx_ntuple
)
966 __rx_ntuple_filter_add(&dev
->ethtool_ntuple_list
, &cmd
.fs
, fsc
);
971 static int ethtool_get_rx_ntuple(struct net_device
*dev
, void __user
*useraddr
)
973 struct ethtool_gstrings gstrings
;
974 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
975 struct ethtool_rx_ntuple_flow_spec_container
*fsc
;
978 int ret
, i
, num_strings
= 0;
980 if (!ops
->get_sset_count
)
983 if (copy_from_user(&gstrings
, useraddr
, sizeof(gstrings
)))
986 ret
= ops
->get_sset_count(dev
, gstrings
.string_set
);
992 data
= kzalloc(gstrings
.len
* ETH_GSTRING_LEN
, GFP_USER
);
996 if (ops
->get_rx_ntuple
) {
997 /* driver-specific filter grab */
998 ret
= ops
->get_rx_ntuple(dev
, gstrings
.string_set
, data
);
1002 /* default ethtool filter grab */
1005 list_for_each_entry(fsc
, &dev
->ethtool_ntuple_list
.list
, list
) {
1006 sprintf(p
, "Filter %d:\n", i
);
1007 p
+= ETH_GSTRING_LEN
;
1010 switch (fsc
->fs
.flow_type
) {
1012 sprintf(p
, "\tFlow Type: TCP\n");
1013 p
+= ETH_GSTRING_LEN
;
1017 sprintf(p
, "\tFlow Type: UDP\n");
1018 p
+= ETH_GSTRING_LEN
;
1022 sprintf(p
, "\tFlow Type: SCTP\n");
1023 p
+= ETH_GSTRING_LEN
;
1026 case AH_ESP_V4_FLOW
:
1027 sprintf(p
, "\tFlow Type: AH ESP\n");
1028 p
+= ETH_GSTRING_LEN
;
1032 sprintf(p
, "\tFlow Type: ESP\n");
1033 p
+= ETH_GSTRING_LEN
;
1037 sprintf(p
, "\tFlow Type: Raw IP\n");
1038 p
+= ETH_GSTRING_LEN
;
1042 sprintf(p
, "\tFlow Type: IPv4\n");
1043 p
+= ETH_GSTRING_LEN
;
1047 sprintf(p
, "\tFlow Type: Unknown\n");
1048 p
+= ETH_GSTRING_LEN
;
1050 goto unknown_filter
;
1053 /* now the rest of the filters */
1054 switch (fsc
->fs
.flow_type
) {
1058 sprintf(p
, "\tSrc IP addr: 0x%x\n",
1059 fsc
->fs
.h_u
.tcp_ip4_spec
.ip4src
);
1060 p
+= ETH_GSTRING_LEN
;
1062 sprintf(p
, "\tSrc IP mask: 0x%x\n",
1063 fsc
->fs
.m_u
.tcp_ip4_spec
.ip4src
);
1064 p
+= ETH_GSTRING_LEN
;
1066 sprintf(p
, "\tDest IP addr: 0x%x\n",
1067 fsc
->fs
.h_u
.tcp_ip4_spec
.ip4dst
);
1068 p
+= ETH_GSTRING_LEN
;
1070 sprintf(p
, "\tDest IP mask: 0x%x\n",
1071 fsc
->fs
.m_u
.tcp_ip4_spec
.ip4dst
);
1072 p
+= ETH_GSTRING_LEN
;
1074 sprintf(p
, "\tSrc Port: %d, mask: 0x%x\n",
1075 fsc
->fs
.h_u
.tcp_ip4_spec
.psrc
,
1076 fsc
->fs
.m_u
.tcp_ip4_spec
.psrc
);
1077 p
+= ETH_GSTRING_LEN
;
1079 sprintf(p
, "\tDest Port: %d, mask: 0x%x\n",
1080 fsc
->fs
.h_u
.tcp_ip4_spec
.pdst
,
1081 fsc
->fs
.m_u
.tcp_ip4_spec
.pdst
);
1082 p
+= ETH_GSTRING_LEN
;
1084 sprintf(p
, "\tTOS: %d, mask: 0x%x\n",
1085 fsc
->fs
.h_u
.tcp_ip4_spec
.tos
,
1086 fsc
->fs
.m_u
.tcp_ip4_spec
.tos
);
1087 p
+= ETH_GSTRING_LEN
;
1090 case AH_ESP_V4_FLOW
:
1092 sprintf(p
, "\tSrc IP addr: 0x%x\n",
1093 fsc
->fs
.h_u
.ah_ip4_spec
.ip4src
);
1094 p
+= ETH_GSTRING_LEN
;
1096 sprintf(p
, "\tSrc IP mask: 0x%x\n",
1097 fsc
->fs
.m_u
.ah_ip4_spec
.ip4src
);
1098 p
+= ETH_GSTRING_LEN
;
1100 sprintf(p
, "\tDest IP addr: 0x%x\n",
1101 fsc
->fs
.h_u
.ah_ip4_spec
.ip4dst
);
1102 p
+= ETH_GSTRING_LEN
;
1104 sprintf(p
, "\tDest IP mask: 0x%x\n",
1105 fsc
->fs
.m_u
.ah_ip4_spec
.ip4dst
);
1106 p
+= ETH_GSTRING_LEN
;
1108 sprintf(p
, "\tSPI: %d, mask: 0x%x\n",
1109 fsc
->fs
.h_u
.ah_ip4_spec
.spi
,
1110 fsc
->fs
.m_u
.ah_ip4_spec
.spi
);
1111 p
+= ETH_GSTRING_LEN
;
1113 sprintf(p
, "\tTOS: %d, mask: 0x%x\n",
1114 fsc
->fs
.h_u
.ah_ip4_spec
.tos
,
1115 fsc
->fs
.m_u
.ah_ip4_spec
.tos
);
1116 p
+= ETH_GSTRING_LEN
;
1120 sprintf(p
, "\tSrc IP addr: 0x%x\n",
1121 fsc
->fs
.h_u
.usr_ip4_spec
.ip4src
);
1122 p
+= ETH_GSTRING_LEN
;
1124 sprintf(p
, "\tSrc IP mask: 0x%x\n",
1125 fsc
->fs
.m_u
.usr_ip4_spec
.ip4src
);
1126 p
+= ETH_GSTRING_LEN
;
1128 sprintf(p
, "\tDest IP addr: 0x%x\n",
1129 fsc
->fs
.h_u
.usr_ip4_spec
.ip4dst
);
1130 p
+= ETH_GSTRING_LEN
;
1132 sprintf(p
, "\tDest IP mask: 0x%x\n",
1133 fsc
->fs
.m_u
.usr_ip4_spec
.ip4dst
);
1134 p
+= ETH_GSTRING_LEN
;
1138 sprintf(p
, "\tSrc IP addr: 0x%x\n",
1139 fsc
->fs
.h_u
.usr_ip4_spec
.ip4src
);
1140 p
+= ETH_GSTRING_LEN
;
1142 sprintf(p
, "\tSrc IP mask: 0x%x\n",
1143 fsc
->fs
.m_u
.usr_ip4_spec
.ip4src
);
1144 p
+= ETH_GSTRING_LEN
;
1146 sprintf(p
, "\tDest IP addr: 0x%x\n",
1147 fsc
->fs
.h_u
.usr_ip4_spec
.ip4dst
);
1148 p
+= ETH_GSTRING_LEN
;
1150 sprintf(p
, "\tDest IP mask: 0x%x\n",
1151 fsc
->fs
.m_u
.usr_ip4_spec
.ip4dst
);
1152 p
+= ETH_GSTRING_LEN
;
1154 sprintf(p
, "\tL4 bytes: 0x%x, mask: 0x%x\n",
1155 fsc
->fs
.h_u
.usr_ip4_spec
.l4_4_bytes
,
1156 fsc
->fs
.m_u
.usr_ip4_spec
.l4_4_bytes
);
1157 p
+= ETH_GSTRING_LEN
;
1159 sprintf(p
, "\tTOS: %d, mask: 0x%x\n",
1160 fsc
->fs
.h_u
.usr_ip4_spec
.tos
,
1161 fsc
->fs
.m_u
.usr_ip4_spec
.tos
);
1162 p
+= ETH_GSTRING_LEN
;
1164 sprintf(p
, "\tIP Version: %d, mask: 0x%x\n",
1165 fsc
->fs
.h_u
.usr_ip4_spec
.ip_ver
,
1166 fsc
->fs
.m_u
.usr_ip4_spec
.ip_ver
);
1167 p
+= ETH_GSTRING_LEN
;
1169 sprintf(p
, "\tProtocol: %d, mask: 0x%x\n",
1170 fsc
->fs
.h_u
.usr_ip4_spec
.proto
,
1171 fsc
->fs
.m_u
.usr_ip4_spec
.proto
);
1172 p
+= ETH_GSTRING_LEN
;
1176 sprintf(p
, "\tVLAN: %d, mask: 0x%x\n",
1177 fsc
->fs
.vlan_tag
, fsc
->fs
.vlan_tag_mask
);
1178 p
+= ETH_GSTRING_LEN
;
1180 sprintf(p
, "\tUser-defined: 0x%Lx\n", fsc
->fs
.data
);
1181 p
+= ETH_GSTRING_LEN
;
1183 sprintf(p
, "\tUser-defined mask: 0x%Lx\n", fsc
->fs
.data_mask
);
1184 p
+= ETH_GSTRING_LEN
;
1186 if (fsc
->fs
.action
== ETHTOOL_RXNTUPLE_ACTION_DROP
)
1187 sprintf(p
, "\tAction: Drop\n");
1189 sprintf(p
, "\tAction: Direct to queue %d\n",
1191 p
+= ETH_GSTRING_LEN
;
1197 /* indicate to userspace how many strings we actually have */
1198 gstrings
.len
= num_strings
;
1200 if (copy_to_user(useraddr
, &gstrings
, sizeof(gstrings
)))
1202 useraddr
+= sizeof(gstrings
);
1203 if (copy_to_user(useraddr
, data
, gstrings
.len
* ETH_GSTRING_LEN
))
1212 static int ethtool_get_regs(struct net_device
*dev
, char __user
*useraddr
)
1214 struct ethtool_regs regs
;
1215 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1219 if (!ops
->get_regs
|| !ops
->get_regs_len
)
1222 if (copy_from_user(®s
, useraddr
, sizeof(regs
)))
1225 reglen
= ops
->get_regs_len(dev
);
1226 if (regs
.len
> reglen
)
1229 regbuf
= vzalloc(reglen
);
1233 ops
->get_regs(dev
, ®s
, regbuf
);
1236 if (copy_to_user(useraddr
, ®s
, sizeof(regs
)))
1238 useraddr
+= offsetof(struct ethtool_regs
, data
);
1239 if (copy_to_user(useraddr
, regbuf
, regs
.len
))
1248 static int ethtool_reset(struct net_device
*dev
, char __user
*useraddr
)
1250 struct ethtool_value reset
;
1253 if (!dev
->ethtool_ops
->reset
)
1256 if (copy_from_user(&reset
, useraddr
, sizeof(reset
)))
1259 ret
= dev
->ethtool_ops
->reset(dev
, &reset
.data
);
1263 if (copy_to_user(useraddr
, &reset
, sizeof(reset
)))
1268 static int ethtool_get_wol(struct net_device
*dev
, char __user
*useraddr
)
1270 struct ethtool_wolinfo wol
= { .cmd
= ETHTOOL_GWOL
};
1272 if (!dev
->ethtool_ops
->get_wol
)
1275 dev
->ethtool_ops
->get_wol(dev
, &wol
);
1277 if (copy_to_user(useraddr
, &wol
, sizeof(wol
)))
1282 static int ethtool_set_wol(struct net_device
*dev
, char __user
*useraddr
)
1284 struct ethtool_wolinfo wol
;
1286 if (!dev
->ethtool_ops
->set_wol
)
1289 if (copy_from_user(&wol
, useraddr
, sizeof(wol
)))
1292 return dev
->ethtool_ops
->set_wol(dev
, &wol
);
1295 static int ethtool_nway_reset(struct net_device
*dev
)
1297 if (!dev
->ethtool_ops
->nway_reset
)
1300 return dev
->ethtool_ops
->nway_reset(dev
);
1303 static int ethtool_get_link(struct net_device
*dev
, char __user
*useraddr
)
1305 struct ethtool_value edata
= { .cmd
= ETHTOOL_GLINK
};
1307 if (!dev
->ethtool_ops
->get_link
)
1310 edata
.data
= netif_running(dev
) && dev
->ethtool_ops
->get_link(dev
);
1312 if (copy_to_user(useraddr
, &edata
, sizeof(edata
)))
1317 static int ethtool_get_eeprom(struct net_device
*dev
, void __user
*useraddr
)
1319 struct ethtool_eeprom eeprom
;
1320 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1321 void __user
*userbuf
= useraddr
+ sizeof(eeprom
);
1322 u32 bytes_remaining
;
1326 if (!ops
->get_eeprom
|| !ops
->get_eeprom_len
)
1329 if (copy_from_user(&eeprom
, useraddr
, sizeof(eeprom
)))
1332 /* Check for wrap and zero */
1333 if (eeprom
.offset
+ eeprom
.len
<= eeprom
.offset
)
1336 /* Check for exceeding total eeprom len */
1337 if (eeprom
.offset
+ eeprom
.len
> ops
->get_eeprom_len(dev
))
1340 data
= kmalloc(PAGE_SIZE
, GFP_USER
);
1344 bytes_remaining
= eeprom
.len
;
1345 while (bytes_remaining
> 0) {
1346 eeprom
.len
= min(bytes_remaining
, (u32
)PAGE_SIZE
);
1348 ret
= ops
->get_eeprom(dev
, &eeprom
, data
);
1351 if (copy_to_user(userbuf
, data
, eeprom
.len
)) {
1355 userbuf
+= eeprom
.len
;
1356 eeprom
.offset
+= eeprom
.len
;
1357 bytes_remaining
-= eeprom
.len
;
1360 eeprom
.len
= userbuf
- (useraddr
+ sizeof(eeprom
));
1361 eeprom
.offset
-= eeprom
.len
;
1362 if (copy_to_user(useraddr
, &eeprom
, sizeof(eeprom
)))
1369 static int ethtool_set_eeprom(struct net_device
*dev
, void __user
*useraddr
)
1371 struct ethtool_eeprom eeprom
;
1372 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1373 void __user
*userbuf
= useraddr
+ sizeof(eeprom
);
1374 u32 bytes_remaining
;
1378 if (!ops
->set_eeprom
|| !ops
->get_eeprom_len
)
1381 if (copy_from_user(&eeprom
, useraddr
, sizeof(eeprom
)))
1384 /* Check for wrap and zero */
1385 if (eeprom
.offset
+ eeprom
.len
<= eeprom
.offset
)
1388 /* Check for exceeding total eeprom len */
1389 if (eeprom
.offset
+ eeprom
.len
> ops
->get_eeprom_len(dev
))
1392 data
= kmalloc(PAGE_SIZE
, GFP_USER
);
1396 bytes_remaining
= eeprom
.len
;
1397 while (bytes_remaining
> 0) {
1398 eeprom
.len
= min(bytes_remaining
, (u32
)PAGE_SIZE
);
1400 if (copy_from_user(data
, userbuf
, eeprom
.len
)) {
1404 ret
= ops
->set_eeprom(dev
, &eeprom
, data
);
1407 userbuf
+= eeprom
.len
;
1408 eeprom
.offset
+= eeprom
.len
;
1409 bytes_remaining
-= eeprom
.len
;
1416 static noinline_for_stack
int ethtool_get_coalesce(struct net_device
*dev
,
1417 void __user
*useraddr
)
1419 struct ethtool_coalesce coalesce
= { .cmd
= ETHTOOL_GCOALESCE
};
1421 if (!dev
->ethtool_ops
->get_coalesce
)
1424 dev
->ethtool_ops
->get_coalesce(dev
, &coalesce
);
1426 if (copy_to_user(useraddr
, &coalesce
, sizeof(coalesce
)))
1431 static noinline_for_stack
int ethtool_set_coalesce(struct net_device
*dev
,
1432 void __user
*useraddr
)
1434 struct ethtool_coalesce coalesce
;
1436 if (!dev
->ethtool_ops
->set_coalesce
)
1439 if (copy_from_user(&coalesce
, useraddr
, sizeof(coalesce
)))
1442 return dev
->ethtool_ops
->set_coalesce(dev
, &coalesce
);
1445 static int ethtool_get_ringparam(struct net_device
*dev
, void __user
*useraddr
)
1447 struct ethtool_ringparam ringparam
= { .cmd
= ETHTOOL_GRINGPARAM
};
1449 if (!dev
->ethtool_ops
->get_ringparam
)
1452 dev
->ethtool_ops
->get_ringparam(dev
, &ringparam
);
1454 if (copy_to_user(useraddr
, &ringparam
, sizeof(ringparam
)))
1459 static int ethtool_set_ringparam(struct net_device
*dev
, void __user
*useraddr
)
1461 struct ethtool_ringparam ringparam
;
1463 if (!dev
->ethtool_ops
->set_ringparam
)
1466 if (copy_from_user(&ringparam
, useraddr
, sizeof(ringparam
)))
1469 return dev
->ethtool_ops
->set_ringparam(dev
, &ringparam
);
1472 static noinline_for_stack
int ethtool_get_channels(struct net_device
*dev
,
1473 void __user
*useraddr
)
1475 struct ethtool_channels channels
= { .cmd
= ETHTOOL_GCHANNELS
};
1477 if (!dev
->ethtool_ops
->get_channels
)
1480 dev
->ethtool_ops
->get_channels(dev
, &channels
);
1482 if (copy_to_user(useraddr
, &channels
, sizeof(channels
)))
1487 static noinline_for_stack
int ethtool_set_channels(struct net_device
*dev
,
1488 void __user
*useraddr
)
1490 struct ethtool_channels channels
;
1492 if (!dev
->ethtool_ops
->set_channels
)
1495 if (copy_from_user(&channels
, useraddr
, sizeof(channels
)))
1498 return dev
->ethtool_ops
->set_channels(dev
, &channels
);
1501 static int ethtool_get_pauseparam(struct net_device
*dev
, void __user
*useraddr
)
1503 struct ethtool_pauseparam pauseparam
= { ETHTOOL_GPAUSEPARAM
};
1505 if (!dev
->ethtool_ops
->get_pauseparam
)
1508 dev
->ethtool_ops
->get_pauseparam(dev
, &pauseparam
);
1510 if (copy_to_user(useraddr
, &pauseparam
, sizeof(pauseparam
)))
1515 static int ethtool_set_pauseparam(struct net_device
*dev
, void __user
*useraddr
)
1517 struct ethtool_pauseparam pauseparam
;
1519 if (!dev
->ethtool_ops
->set_pauseparam
)
1522 if (copy_from_user(&pauseparam
, useraddr
, sizeof(pauseparam
)))
1525 return dev
->ethtool_ops
->set_pauseparam(dev
, &pauseparam
);
1528 static int __ethtool_set_sg(struct net_device
*dev
, u32 data
)
1532 if (!dev
->ethtool_ops
->set_sg
)
1535 if (data
&& !(dev
->features
& NETIF_F_ALL_CSUM
))
1538 if (!data
&& dev
->ethtool_ops
->set_tso
) {
1539 err
= dev
->ethtool_ops
->set_tso(dev
, 0);
1544 if (!data
&& dev
->ethtool_ops
->set_ufo
) {
1545 err
= dev
->ethtool_ops
->set_ufo(dev
, 0);
1549 return dev
->ethtool_ops
->set_sg(dev
, data
);
1552 static int __ethtool_set_tx_csum(struct net_device
*dev
, u32 data
)
1556 if (!dev
->ethtool_ops
->set_tx_csum
)
1559 if (!data
&& dev
->ethtool_ops
->set_sg
) {
1560 err
= __ethtool_set_sg(dev
, 0);
1565 return dev
->ethtool_ops
->set_tx_csum(dev
, data
);
1568 static int __ethtool_set_rx_csum(struct net_device
*dev
, u32 data
)
1570 if (!dev
->ethtool_ops
->set_rx_csum
)
1574 dev
->features
&= ~NETIF_F_GRO
;
1576 return dev
->ethtool_ops
->set_rx_csum(dev
, data
);
1579 static int __ethtool_set_tso(struct net_device
*dev
, u32 data
)
1581 if (!dev
->ethtool_ops
->set_tso
)
1584 if (data
&& !(dev
->features
& NETIF_F_SG
))
1587 return dev
->ethtool_ops
->set_tso(dev
, data
);
1590 static int __ethtool_set_ufo(struct net_device
*dev
, u32 data
)
1592 if (!dev
->ethtool_ops
->set_ufo
)
1594 if (data
&& !(dev
->features
& NETIF_F_SG
))
1596 if (data
&& !((dev
->features
& NETIF_F_GEN_CSUM
) ||
1597 (dev
->features
& (NETIF_F_IP_CSUM
|NETIF_F_IPV6_CSUM
))
1598 == (NETIF_F_IP_CSUM
|NETIF_F_IPV6_CSUM
)))
1600 return dev
->ethtool_ops
->set_ufo(dev
, data
);
1603 static int ethtool_self_test(struct net_device
*dev
, char __user
*useraddr
)
1605 struct ethtool_test test
;
1606 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1610 if (!ops
->self_test
|| !ops
->get_sset_count
)
1613 test_len
= ops
->get_sset_count(dev
, ETH_SS_TEST
);
1616 WARN_ON(test_len
== 0);
1618 if (copy_from_user(&test
, useraddr
, sizeof(test
)))
1621 test
.len
= test_len
;
1622 data
= kmalloc(test_len
* sizeof(u64
), GFP_USER
);
1626 ops
->self_test(dev
, &test
, data
);
1629 if (copy_to_user(useraddr
, &test
, sizeof(test
)))
1631 useraddr
+= sizeof(test
);
1632 if (copy_to_user(useraddr
, data
, test
.len
* sizeof(u64
)))
1641 static int ethtool_get_strings(struct net_device
*dev
, void __user
*useraddr
)
1643 struct ethtool_gstrings gstrings
;
1647 if (copy_from_user(&gstrings
, useraddr
, sizeof(gstrings
)))
1650 ret
= __ethtool_get_sset_count(dev
, gstrings
.string_set
);
1656 data
= kmalloc(gstrings
.len
* ETH_GSTRING_LEN
, GFP_USER
);
1660 __ethtool_get_strings(dev
, gstrings
.string_set
, data
);
1663 if (copy_to_user(useraddr
, &gstrings
, sizeof(gstrings
)))
1665 useraddr
+= sizeof(gstrings
);
1666 if (copy_to_user(useraddr
, data
, gstrings
.len
* ETH_GSTRING_LEN
))
1675 static int ethtool_phys_id(struct net_device
*dev
, void __user
*useraddr
)
1677 struct ethtool_value id
;
1681 if (!dev
->ethtool_ops
->set_phys_id
)
1687 if (copy_from_user(&id
, useraddr
, sizeof(id
)))
1690 rc
= dev
->ethtool_ops
->set_phys_id(dev
, ETHTOOL_ID_ACTIVE
);
1694 /* Drop the RTNL lock while waiting, but prevent reentry or
1695 * removal of the device.
1702 /* Driver will handle this itself */
1703 schedule_timeout_interruptible(
1704 id
.data
? (id
.data
* HZ
) : MAX_SCHEDULE_TIMEOUT
);
1706 /* Driver expects to be called at twice the frequency in rc */
1707 int n
= rc
* 2, i
, interval
= HZ
/ n
;
1709 /* Count down seconds */
1711 /* Count down iterations per second */
1715 rc
= dev
->ethtool_ops
->set_phys_id(dev
,
1716 (i
& 1) ? ETHTOOL_ID_OFF
: ETHTOOL_ID_ON
);
1720 schedule_timeout_interruptible(interval
);
1721 } while (!signal_pending(current
) && --i
!= 0);
1722 } while (!signal_pending(current
) &&
1723 (id
.data
== 0 || --id
.data
!= 0));
1730 (void)dev
->ethtool_ops
->set_phys_id(dev
, ETHTOOL_ID_INACTIVE
);
1734 static int ethtool_get_stats(struct net_device
*dev
, void __user
*useraddr
)
1736 struct ethtool_stats stats
;
1737 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1741 if (!ops
->get_ethtool_stats
|| !ops
->get_sset_count
)
1744 n_stats
= ops
->get_sset_count(dev
, ETH_SS_STATS
);
1747 WARN_ON(n_stats
== 0);
1749 if (copy_from_user(&stats
, useraddr
, sizeof(stats
)))
1752 stats
.n_stats
= n_stats
;
1753 data
= kmalloc(n_stats
* sizeof(u64
), GFP_USER
);
1757 ops
->get_ethtool_stats(dev
, &stats
, data
);
1760 if (copy_to_user(useraddr
, &stats
, sizeof(stats
)))
1762 useraddr
+= sizeof(stats
);
1763 if (copy_to_user(useraddr
, data
, stats
.n_stats
* sizeof(u64
)))
1772 static int ethtool_get_perm_addr(struct net_device
*dev
, void __user
*useraddr
)
1774 struct ethtool_perm_addr epaddr
;
1776 if (copy_from_user(&epaddr
, useraddr
, sizeof(epaddr
)))
1779 if (epaddr
.size
< dev
->addr_len
)
1781 epaddr
.size
= dev
->addr_len
;
1783 if (copy_to_user(useraddr
, &epaddr
, sizeof(epaddr
)))
1785 useraddr
+= sizeof(epaddr
);
1786 if (copy_to_user(useraddr
, dev
->perm_addr
, epaddr
.size
))
1791 static int ethtool_get_value(struct net_device
*dev
, char __user
*useraddr
,
1792 u32 cmd
, u32 (*actor
)(struct net_device
*))
1794 struct ethtool_value edata
= { .cmd
= cmd
};
1799 edata
.data
= actor(dev
);
1801 if (copy_to_user(useraddr
, &edata
, sizeof(edata
)))
1806 static int ethtool_set_value_void(struct net_device
*dev
, char __user
*useraddr
,
1807 void (*actor
)(struct net_device
*, u32
))
1809 struct ethtool_value edata
;
1814 if (copy_from_user(&edata
, useraddr
, sizeof(edata
)))
1817 actor(dev
, edata
.data
);
1821 static int ethtool_set_value(struct net_device
*dev
, char __user
*useraddr
,
1822 int (*actor
)(struct net_device
*, u32
))
1824 struct ethtool_value edata
;
1829 if (copy_from_user(&edata
, useraddr
, sizeof(edata
)))
1832 return actor(dev
, edata
.data
);
1835 static noinline_for_stack
int ethtool_flash_device(struct net_device
*dev
,
1836 char __user
*useraddr
)
1838 struct ethtool_flash efl
;
1840 if (copy_from_user(&efl
, useraddr
, sizeof(efl
)))
1843 if (!dev
->ethtool_ops
->flash_device
)
1846 return dev
->ethtool_ops
->flash_device(dev
, &efl
);
1849 static int ethtool_set_dump(struct net_device
*dev
,
1850 void __user
*useraddr
)
1852 struct ethtool_dump dump
;
1854 if (!dev
->ethtool_ops
->set_dump
)
1857 if (copy_from_user(&dump
, useraddr
, sizeof(dump
)))
1860 return dev
->ethtool_ops
->set_dump(dev
, &dump
);
1863 static int ethtool_get_dump_flag(struct net_device
*dev
,
1864 void __user
*useraddr
)
1867 struct ethtool_dump dump
;
1868 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1870 if (!dev
->ethtool_ops
->get_dump_flag
)
1873 if (copy_from_user(&dump
, useraddr
, sizeof(dump
)))
1876 ret
= ops
->get_dump_flag(dev
, &dump
);
1880 if (copy_to_user(useraddr
, &dump
, sizeof(dump
)))
1885 static int ethtool_get_dump_data(struct net_device
*dev
,
1886 void __user
*useraddr
)
1890 struct ethtool_dump dump
, tmp
;
1891 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1894 if (!dev
->ethtool_ops
->get_dump_data
||
1895 !dev
->ethtool_ops
->get_dump_flag
)
1898 if (copy_from_user(&dump
, useraddr
, sizeof(dump
)))
1901 memset(&tmp
, 0, sizeof(tmp
));
1902 tmp
.cmd
= ETHTOOL_GET_DUMP_FLAG
;
1903 ret
= ops
->get_dump_flag(dev
, &tmp
);
1907 len
= (tmp
.len
> dump
.len
) ? dump
.len
: tmp
.len
;
1911 data
= vzalloc(tmp
.len
);
1914 ret
= ops
->get_dump_data(dev
, &dump
, data
);
1918 if (copy_to_user(useraddr
, &dump
, sizeof(dump
))) {
1922 useraddr
+= offsetof(struct ethtool_dump
, data
);
1923 if (copy_to_user(useraddr
, data
, len
))
1930 /* The main entry point in this file. Called from net/core/dev.c */
1932 int dev_ethtool(struct net
*net
, struct ifreq
*ifr
)
1934 struct net_device
*dev
= __dev_get_by_name(net
, ifr
->ifr_name
);
1935 void __user
*useraddr
= ifr
->ifr_data
;
1940 if (!dev
|| !netif_device_present(dev
))
1943 if (copy_from_user(ðcmd
, useraddr
, sizeof(ethcmd
)))
1946 if (!dev
->ethtool_ops
) {
1947 /* ETHTOOL_GDRVINFO does not require any driver support.
1948 * It is also unprivileged and does not change anything,
1949 * so we can take a shortcut to it. */
1950 if (ethcmd
== ETHTOOL_GDRVINFO
)
1951 return ethtool_get_drvinfo(dev
, useraddr
);
1956 /* Allow some commands to be done by anyone */
1959 case ETHTOOL_GDRVINFO
:
1960 case ETHTOOL_GMSGLVL
:
1961 case ETHTOOL_GCOALESCE
:
1962 case ETHTOOL_GRINGPARAM
:
1963 case ETHTOOL_GPAUSEPARAM
:
1964 case ETHTOOL_GRXCSUM
:
1965 case ETHTOOL_GTXCSUM
:
1967 case ETHTOOL_GSTRINGS
:
1969 case ETHTOOL_GPERMADDR
:
1973 case ETHTOOL_GFLAGS
:
1974 case ETHTOOL_GPFLAGS
:
1976 case ETHTOOL_GRXRINGS
:
1977 case ETHTOOL_GRXCLSRLCNT
:
1978 case ETHTOOL_GRXCLSRULE
:
1979 case ETHTOOL_GRXCLSRLALL
:
1980 case ETHTOOL_GFEATURES
:
1983 if (!capable(CAP_NET_ADMIN
))
1987 if (dev
->ethtool_ops
->begin
) {
1988 rc
= dev
->ethtool_ops
->begin(dev
);
1992 old_features
= dev
->features
;
1996 rc
= ethtool_get_settings(dev
, useraddr
);
1999 rc
= ethtool_set_settings(dev
, useraddr
);
2001 case ETHTOOL_GDRVINFO
:
2002 rc
= ethtool_get_drvinfo(dev
, useraddr
);
2005 rc
= ethtool_get_regs(dev
, useraddr
);
2008 rc
= ethtool_get_wol(dev
, useraddr
);
2011 rc
= ethtool_set_wol(dev
, useraddr
);
2013 case ETHTOOL_GMSGLVL
:
2014 rc
= ethtool_get_value(dev
, useraddr
, ethcmd
,
2015 dev
->ethtool_ops
->get_msglevel
);
2017 case ETHTOOL_SMSGLVL
:
2018 rc
= ethtool_set_value_void(dev
, useraddr
,
2019 dev
->ethtool_ops
->set_msglevel
);
2021 case ETHTOOL_NWAY_RST
:
2022 rc
= ethtool_nway_reset(dev
);
2025 rc
= ethtool_get_link(dev
, useraddr
);
2027 case ETHTOOL_GEEPROM
:
2028 rc
= ethtool_get_eeprom(dev
, useraddr
);
2030 case ETHTOOL_SEEPROM
:
2031 rc
= ethtool_set_eeprom(dev
, useraddr
);
2033 case ETHTOOL_GCOALESCE
:
2034 rc
= ethtool_get_coalesce(dev
, useraddr
);
2036 case ETHTOOL_SCOALESCE
:
2037 rc
= ethtool_set_coalesce(dev
, useraddr
);
2039 case ETHTOOL_GRINGPARAM
:
2040 rc
= ethtool_get_ringparam(dev
, useraddr
);
2042 case ETHTOOL_SRINGPARAM
:
2043 rc
= ethtool_set_ringparam(dev
, useraddr
);
2045 case ETHTOOL_GPAUSEPARAM
:
2046 rc
= ethtool_get_pauseparam(dev
, useraddr
);
2048 case ETHTOOL_SPAUSEPARAM
:
2049 rc
= ethtool_set_pauseparam(dev
, useraddr
);
2052 rc
= ethtool_self_test(dev
, useraddr
);
2054 case ETHTOOL_GSTRINGS
:
2055 rc
= ethtool_get_strings(dev
, useraddr
);
2057 case ETHTOOL_PHYS_ID
:
2058 rc
= ethtool_phys_id(dev
, useraddr
);
2060 case ETHTOOL_GSTATS
:
2061 rc
= ethtool_get_stats(dev
, useraddr
);
2063 case ETHTOOL_GPERMADDR
:
2064 rc
= ethtool_get_perm_addr(dev
, useraddr
);
2066 case ETHTOOL_GFLAGS
:
2067 rc
= ethtool_get_value(dev
, useraddr
, ethcmd
,
2068 (dev
->ethtool_ops
->get_flags
?
2069 dev
->ethtool_ops
->get_flags
:
2070 ethtool_op_get_flags
));
2072 case ETHTOOL_SFLAGS
:
2073 rc
= ethtool_set_value(dev
, useraddr
, __ethtool_set_flags
);
2075 case ETHTOOL_GPFLAGS
:
2076 rc
= ethtool_get_value(dev
, useraddr
, ethcmd
,
2077 dev
->ethtool_ops
->get_priv_flags
);
2079 case ETHTOOL_SPFLAGS
:
2080 rc
= ethtool_set_value(dev
, useraddr
,
2081 dev
->ethtool_ops
->set_priv_flags
);
2084 case ETHTOOL_GRXRINGS
:
2085 case ETHTOOL_GRXCLSRLCNT
:
2086 case ETHTOOL_GRXCLSRULE
:
2087 case ETHTOOL_GRXCLSRLALL
:
2088 rc
= ethtool_get_rxnfc(dev
, ethcmd
, useraddr
);
2091 case ETHTOOL_SRXCLSRLDEL
:
2092 case ETHTOOL_SRXCLSRLINS
:
2093 rc
= ethtool_set_rxnfc(dev
, ethcmd
, useraddr
);
2095 case ETHTOOL_FLASHDEV
:
2096 rc
= ethtool_flash_device(dev
, useraddr
);
2099 rc
= ethtool_reset(dev
, useraddr
);
2101 case ETHTOOL_SRXNTUPLE
:
2102 rc
= ethtool_set_rx_ntuple(dev
, useraddr
);
2104 case ETHTOOL_GRXNTUPLE
:
2105 rc
= ethtool_get_rx_ntuple(dev
, useraddr
);
2107 case ETHTOOL_GSSET_INFO
:
2108 rc
= ethtool_get_sset_info(dev
, useraddr
);
2110 case ETHTOOL_GRXFHINDIR
:
2111 rc
= ethtool_get_rxfh_indir(dev
, useraddr
);
2113 case ETHTOOL_SRXFHINDIR
:
2114 rc
= ethtool_set_rxfh_indir(dev
, useraddr
);
2116 case ETHTOOL_GFEATURES
:
2117 rc
= ethtool_get_features(dev
, useraddr
);
2119 case ETHTOOL_SFEATURES
:
2120 rc
= ethtool_set_features(dev
, useraddr
);
2122 case ETHTOOL_GTXCSUM
:
2123 case ETHTOOL_GRXCSUM
:
2129 rc
= ethtool_get_one_feature(dev
, useraddr
, ethcmd
);
2131 case ETHTOOL_STXCSUM
:
2132 case ETHTOOL_SRXCSUM
:
2138 rc
= ethtool_set_one_feature(dev
, useraddr
, ethcmd
);
2140 case ETHTOOL_GCHANNELS
:
2141 rc
= ethtool_get_channels(dev
, useraddr
);
2143 case ETHTOOL_SCHANNELS
:
2144 rc
= ethtool_set_channels(dev
, useraddr
);
2146 case ETHTOOL_SET_DUMP
:
2147 rc
= ethtool_set_dump(dev
, useraddr
);
2149 case ETHTOOL_GET_DUMP_FLAG
:
2150 rc
= ethtool_get_dump_flag(dev
, useraddr
);
2152 case ETHTOOL_GET_DUMP_DATA
:
2153 rc
= ethtool_get_dump_data(dev
, useraddr
);
2159 if (dev
->ethtool_ops
->complete
)
2160 dev
->ethtool_ops
->complete(dev
);
2162 if (old_features
!= dev
->features
)
2163 netdev_features_change(dev
);