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/signal.h>
28 #include <linux/net.h>
31 * Some useful ethtool_ops methods that're device independent.
32 * If we find that all drivers want to do the same thing here,
33 * we can turn these into dev_() function calls.
36 u32
ethtool_op_get_link(struct net_device
*dev
)
38 return netif_carrier_ok(dev
) ? 1 : 0;
40 EXPORT_SYMBOL(ethtool_op_get_link
);
42 int ethtool_op_get_ts_info(struct net_device
*dev
, struct ethtool_ts_info
*info
)
44 info
->so_timestamping
=
45 SOF_TIMESTAMPING_TX_SOFTWARE
|
46 SOF_TIMESTAMPING_RX_SOFTWARE
|
47 SOF_TIMESTAMPING_SOFTWARE
;
51 EXPORT_SYMBOL(ethtool_op_get_ts_info
);
53 /* Handlers for each ethtool command */
55 #define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32)
57 static const char netdev_features_strings
[NETDEV_FEATURE_COUNT
][ETH_GSTRING_LEN
] = {
58 [NETIF_F_SG_BIT
] = "tx-scatter-gather",
59 [NETIF_F_IP_CSUM_BIT
] = "tx-checksum-ipv4",
60 [NETIF_F_HW_CSUM_BIT
] = "tx-checksum-ip-generic",
61 [NETIF_F_IPV6_CSUM_BIT
] = "tx-checksum-ipv6",
62 [NETIF_F_HIGHDMA_BIT
] = "highdma",
63 [NETIF_F_FRAGLIST_BIT
] = "tx-scatter-gather-fraglist",
64 [NETIF_F_HW_VLAN_CTAG_TX_BIT
] = "tx-vlan-hw-insert",
66 [NETIF_F_HW_VLAN_CTAG_RX_BIT
] = "rx-vlan-hw-parse",
67 [NETIF_F_HW_VLAN_CTAG_FILTER_BIT
] = "rx-vlan-filter",
68 [NETIF_F_HW_VLAN_STAG_TX_BIT
] = "tx-vlan-stag-hw-insert",
69 [NETIF_F_HW_VLAN_STAG_RX_BIT
] = "rx-vlan-stag-hw-parse",
70 [NETIF_F_HW_VLAN_STAG_FILTER_BIT
] = "rx-vlan-stag-filter",
71 [NETIF_F_VLAN_CHALLENGED_BIT
] = "vlan-challenged",
72 [NETIF_F_GSO_BIT
] = "tx-generic-segmentation",
73 [NETIF_F_LLTX_BIT
] = "tx-lockless",
74 [NETIF_F_NETNS_LOCAL_BIT
] = "netns-local",
75 [NETIF_F_GRO_BIT
] = "rx-gro",
76 [NETIF_F_LRO_BIT
] = "rx-lro",
78 [NETIF_F_TSO_BIT
] = "tx-tcp-segmentation",
79 [NETIF_F_GSO_ROBUST_BIT
] = "tx-gso-robust",
80 [NETIF_F_TSO_ECN_BIT
] = "tx-tcp-ecn-segmentation",
81 [NETIF_F_TSO_MANGLEID_BIT
] = "tx-tcp-mangleid-segmentation",
82 [NETIF_F_TSO6_BIT
] = "tx-tcp6-segmentation",
83 [NETIF_F_FSO_BIT
] = "tx-fcoe-segmentation",
84 [NETIF_F_GSO_GRE_BIT
] = "tx-gre-segmentation",
85 [NETIF_F_GSO_GRE_CSUM_BIT
] = "tx-gre-csum-segmentation",
86 [NETIF_F_GSO_IPXIP4_BIT
] = "tx-ipxip4-segmentation",
87 [NETIF_F_GSO_IPXIP6_BIT
] = "tx-ipxip6-segmentation",
88 [NETIF_F_GSO_UDP_TUNNEL_BIT
] = "tx-udp_tnl-segmentation",
89 [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT
] = "tx-udp_tnl-csum-segmentation",
90 [NETIF_F_GSO_PARTIAL_BIT
] = "tx-gso-partial",
91 [NETIF_F_GSO_SCTP_BIT
] = "tx-sctp-segmentation",
92 [NETIF_F_GSO_ESP_BIT
] = "tx-esp-segmentation",
94 [NETIF_F_FCOE_CRC_BIT
] = "tx-checksum-fcoe-crc",
95 [NETIF_F_SCTP_CRC_BIT
] = "tx-checksum-sctp",
96 [NETIF_F_FCOE_MTU_BIT
] = "fcoe-mtu",
97 [NETIF_F_NTUPLE_BIT
] = "rx-ntuple-filter",
98 [NETIF_F_RXHASH_BIT
] = "rx-hashing",
99 [NETIF_F_RXCSUM_BIT
] = "rx-checksum",
100 [NETIF_F_NOCACHE_COPY_BIT
] = "tx-nocache-copy",
101 [NETIF_F_LOOPBACK_BIT
] = "loopback",
102 [NETIF_F_RXFCS_BIT
] = "rx-fcs",
103 [NETIF_F_RXALL_BIT
] = "rx-all",
104 [NETIF_F_HW_L2FW_DOFFLOAD_BIT
] = "l2-fwd-offload",
105 [NETIF_F_HW_TC_BIT
] = "hw-tc-offload",
106 [NETIF_F_HW_ESP_BIT
] = "esp-hw-offload",
107 [NETIF_F_HW_ESP_TX_CSUM_BIT
] = "esp-tx-csum-hw-offload",
108 [NETIF_F_RX_UDP_TUNNEL_PORT_BIT
] = "rx-udp_tunnel-port-offload",
112 rss_hash_func_strings
[ETH_RSS_HASH_FUNCS_COUNT
][ETH_GSTRING_LEN
] = {
113 [ETH_RSS_HASH_TOP_BIT
] = "toeplitz",
114 [ETH_RSS_HASH_XOR_BIT
] = "xor",
115 [ETH_RSS_HASH_CRC32_BIT
] = "crc32",
119 tunable_strings
[__ETHTOOL_TUNABLE_COUNT
][ETH_GSTRING_LEN
] = {
120 [ETHTOOL_ID_UNSPEC
] = "Unspec",
121 [ETHTOOL_RX_COPYBREAK
] = "rx-copybreak",
122 [ETHTOOL_TX_COPYBREAK
] = "tx-copybreak",
126 phy_tunable_strings
[__ETHTOOL_PHY_TUNABLE_COUNT
][ETH_GSTRING_LEN
] = {
127 [ETHTOOL_ID_UNSPEC
] = "Unspec",
128 [ETHTOOL_PHY_DOWNSHIFT
] = "phy-downshift",
131 static int ethtool_get_features(struct net_device
*dev
, void __user
*useraddr
)
133 struct ethtool_gfeatures cmd
= {
134 .cmd
= ETHTOOL_GFEATURES
,
135 .size
= ETHTOOL_DEV_FEATURE_WORDS
,
137 struct ethtool_get_features_block features
[ETHTOOL_DEV_FEATURE_WORDS
];
138 u32 __user
*sizeaddr
;
142 /* in case feature bits run out again */
143 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS
* sizeof(u32
) > sizeof(netdev_features_t
));
145 for (i
= 0; i
< ETHTOOL_DEV_FEATURE_WORDS
; ++i
) {
146 features
[i
].available
= (u32
)(dev
->hw_features
>> (32 * i
));
147 features
[i
].requested
= (u32
)(dev
->wanted_features
>> (32 * i
));
148 features
[i
].active
= (u32
)(dev
->features
>> (32 * i
));
149 features
[i
].never_changed
=
150 (u32
)(NETIF_F_NEVER_CHANGE
>> (32 * i
));
153 sizeaddr
= useraddr
+ offsetof(struct ethtool_gfeatures
, size
);
154 if (get_user(copy_size
, sizeaddr
))
157 if (copy_size
> ETHTOOL_DEV_FEATURE_WORDS
)
158 copy_size
= ETHTOOL_DEV_FEATURE_WORDS
;
160 if (copy_to_user(useraddr
, &cmd
, sizeof(cmd
)))
162 useraddr
+= sizeof(cmd
);
163 if (copy_to_user(useraddr
, features
, copy_size
* sizeof(*features
)))
169 static int ethtool_set_features(struct net_device
*dev
, void __user
*useraddr
)
171 struct ethtool_sfeatures cmd
;
172 struct ethtool_set_features_block features
[ETHTOOL_DEV_FEATURE_WORDS
];
173 netdev_features_t wanted
= 0, valid
= 0;
176 if (copy_from_user(&cmd
, useraddr
, sizeof(cmd
)))
178 useraddr
+= sizeof(cmd
);
180 if (cmd
.size
!= ETHTOOL_DEV_FEATURE_WORDS
)
183 if (copy_from_user(features
, useraddr
, sizeof(features
)))
186 for (i
= 0; i
< ETHTOOL_DEV_FEATURE_WORDS
; ++i
) {
187 valid
|= (netdev_features_t
)features
[i
].valid
<< (32 * i
);
188 wanted
|= (netdev_features_t
)features
[i
].requested
<< (32 * i
);
191 if (valid
& ~NETIF_F_ETHTOOL_BITS
)
194 if (valid
& ~dev
->hw_features
) {
195 valid
&= dev
->hw_features
;
196 ret
|= ETHTOOL_F_UNSUPPORTED
;
199 dev
->wanted_features
&= ~valid
;
200 dev
->wanted_features
|= wanted
& valid
;
201 __netdev_update_features(dev
);
203 if ((dev
->wanted_features
^ dev
->features
) & valid
)
204 ret
|= ETHTOOL_F_WISH
;
209 static int phy_get_sset_count(struct phy_device
*phydev
)
213 if (phydev
->drv
->get_sset_count
&&
214 phydev
->drv
->get_strings
&&
215 phydev
->drv
->get_stats
) {
216 mutex_lock(&phydev
->lock
);
217 ret
= phydev
->drv
->get_sset_count(phydev
);
218 mutex_unlock(&phydev
->lock
);
226 static int __ethtool_get_sset_count(struct net_device
*dev
, int sset
)
228 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
230 if (sset
== ETH_SS_FEATURES
)
231 return ARRAY_SIZE(netdev_features_strings
);
233 if (sset
== ETH_SS_RSS_HASH_FUNCS
)
234 return ARRAY_SIZE(rss_hash_func_strings
);
236 if (sset
== ETH_SS_TUNABLES
)
237 return ARRAY_SIZE(tunable_strings
);
239 if (sset
== ETH_SS_PHY_TUNABLES
)
240 return ARRAY_SIZE(phy_tunable_strings
);
242 if (sset
== ETH_SS_PHY_STATS
) {
244 return phy_get_sset_count(dev
->phydev
);
249 if (ops
->get_sset_count
&& ops
->get_strings
)
250 return ops
->get_sset_count(dev
, sset
);
255 static void __ethtool_get_strings(struct net_device
*dev
,
256 u32 stringset
, u8
*data
)
258 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
260 if (stringset
== ETH_SS_FEATURES
)
261 memcpy(data
, netdev_features_strings
,
262 sizeof(netdev_features_strings
));
263 else if (stringset
== ETH_SS_RSS_HASH_FUNCS
)
264 memcpy(data
, rss_hash_func_strings
,
265 sizeof(rss_hash_func_strings
));
266 else if (stringset
== ETH_SS_TUNABLES
)
267 memcpy(data
, tunable_strings
, sizeof(tunable_strings
));
268 else if (stringset
== ETH_SS_PHY_TUNABLES
)
269 memcpy(data
, phy_tunable_strings
, sizeof(phy_tunable_strings
));
270 else if (stringset
== ETH_SS_PHY_STATS
) {
271 struct phy_device
*phydev
= dev
->phydev
;
274 mutex_lock(&phydev
->lock
);
275 phydev
->drv
->get_strings(phydev
, data
);
276 mutex_unlock(&phydev
->lock
);
281 /* ops->get_strings is valid because checked earlier */
282 ops
->get_strings(dev
, stringset
, data
);
285 static netdev_features_t
ethtool_get_feature_mask(u32 eth_cmd
)
287 /* feature masks of legacy discrete ethtool ops */
290 case ETHTOOL_GTXCSUM
:
291 case ETHTOOL_STXCSUM
:
292 return NETIF_F_CSUM_MASK
| NETIF_F_SCTP_CRC
;
293 case ETHTOOL_GRXCSUM
:
294 case ETHTOOL_SRXCSUM
:
295 return NETIF_F_RXCSUM
;
301 return NETIF_F_ALL_TSO
;
313 static int ethtool_get_one_feature(struct net_device
*dev
,
314 char __user
*useraddr
, u32 ethcmd
)
316 netdev_features_t mask
= ethtool_get_feature_mask(ethcmd
);
317 struct ethtool_value edata
= {
319 .data
= !!(dev
->features
& mask
),
322 if (copy_to_user(useraddr
, &edata
, sizeof(edata
)))
327 static int ethtool_set_one_feature(struct net_device
*dev
,
328 void __user
*useraddr
, u32 ethcmd
)
330 struct ethtool_value edata
;
331 netdev_features_t mask
;
333 if (copy_from_user(&edata
, useraddr
, sizeof(edata
)))
336 mask
= ethtool_get_feature_mask(ethcmd
);
337 mask
&= dev
->hw_features
;
342 dev
->wanted_features
|= mask
;
344 dev
->wanted_features
&= ~mask
;
346 __netdev_update_features(dev
);
351 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
352 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
353 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
354 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
357 static u32
__ethtool_get_flags(struct net_device
*dev
)
361 if (dev
->features
& NETIF_F_LRO
)
362 flags
|= ETH_FLAG_LRO
;
363 if (dev
->features
& NETIF_F_HW_VLAN_CTAG_RX
)
364 flags
|= ETH_FLAG_RXVLAN
;
365 if (dev
->features
& NETIF_F_HW_VLAN_CTAG_TX
)
366 flags
|= ETH_FLAG_TXVLAN
;
367 if (dev
->features
& NETIF_F_NTUPLE
)
368 flags
|= ETH_FLAG_NTUPLE
;
369 if (dev
->features
& NETIF_F_RXHASH
)
370 flags
|= ETH_FLAG_RXHASH
;
375 static int __ethtool_set_flags(struct net_device
*dev
, u32 data
)
377 netdev_features_t features
= 0, changed
;
379 if (data
& ~ETH_ALL_FLAGS
)
382 if (data
& ETH_FLAG_LRO
)
383 features
|= NETIF_F_LRO
;
384 if (data
& ETH_FLAG_RXVLAN
)
385 features
|= NETIF_F_HW_VLAN_CTAG_RX
;
386 if (data
& ETH_FLAG_TXVLAN
)
387 features
|= NETIF_F_HW_VLAN_CTAG_TX
;
388 if (data
& ETH_FLAG_NTUPLE
)
389 features
|= NETIF_F_NTUPLE
;
390 if (data
& ETH_FLAG_RXHASH
)
391 features
|= NETIF_F_RXHASH
;
393 /* allow changing only bits set in hw_features */
394 changed
= (features
^ dev
->features
) & ETH_ALL_FEATURES
;
395 if (changed
& ~dev
->hw_features
)
396 return (changed
& dev
->hw_features
) ? -EINVAL
: -EOPNOTSUPP
;
398 dev
->wanted_features
=
399 (dev
->wanted_features
& ~changed
) | (features
& changed
);
401 __netdev_update_features(dev
);
406 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst
,
409 bitmap_zero(dst
, __ETHTOOL_LINK_MODE_MASK_NBITS
);
412 EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode
);
414 /* return false if src had higher bits set. lower bits always updated. */
415 bool ethtool_convert_link_mode_to_legacy_u32(u32
*legacy_u32
,
416 const unsigned long *src
)
420 /* TODO: following test will soon always be true */
421 if (__ETHTOOL_LINK_MODE_MASK_NBITS
> 32) {
422 __ETHTOOL_DECLARE_LINK_MODE_MASK(ext
);
424 bitmap_zero(ext
, __ETHTOOL_LINK_MODE_MASK_NBITS
);
425 bitmap_fill(ext
, 32);
426 bitmap_complement(ext
, ext
, __ETHTOOL_LINK_MODE_MASK_NBITS
);
427 if (bitmap_intersects(ext
, src
,
428 __ETHTOOL_LINK_MODE_MASK_NBITS
)) {
429 /* src mask goes beyond bit 31 */
433 *legacy_u32
= src
[0];
436 EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32
);
438 /* return false if legacy contained non-0 deprecated fields
439 * transceiver/maxtxpkt/maxrxpkt. rest of ksettings always updated
442 convert_legacy_settings_to_link_ksettings(
443 struct ethtool_link_ksettings
*link_ksettings
,
444 const struct ethtool_cmd
*legacy_settings
)
448 memset(link_ksettings
, 0, sizeof(*link_ksettings
));
450 /* This is used to tell users that driver is still using these
451 * deprecated legacy fields, and they should not use
452 * %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS
454 if (legacy_settings
->transceiver
||
455 legacy_settings
->maxtxpkt
||
456 legacy_settings
->maxrxpkt
)
459 ethtool_convert_legacy_u32_to_link_mode(
460 link_ksettings
->link_modes
.supported
,
461 legacy_settings
->supported
);
462 ethtool_convert_legacy_u32_to_link_mode(
463 link_ksettings
->link_modes
.advertising
,
464 legacy_settings
->advertising
);
465 ethtool_convert_legacy_u32_to_link_mode(
466 link_ksettings
->link_modes
.lp_advertising
,
467 legacy_settings
->lp_advertising
);
468 link_ksettings
->base
.speed
469 = ethtool_cmd_speed(legacy_settings
);
470 link_ksettings
->base
.duplex
471 = legacy_settings
->duplex
;
472 link_ksettings
->base
.port
473 = legacy_settings
->port
;
474 link_ksettings
->base
.phy_address
475 = legacy_settings
->phy_address
;
476 link_ksettings
->base
.autoneg
477 = legacy_settings
->autoneg
;
478 link_ksettings
->base
.mdio_support
479 = legacy_settings
->mdio_support
;
480 link_ksettings
->base
.eth_tp_mdix
481 = legacy_settings
->eth_tp_mdix
;
482 link_ksettings
->base
.eth_tp_mdix_ctrl
483 = legacy_settings
->eth_tp_mdix_ctrl
;
487 /* return false if ksettings link modes had higher bits
488 * set. legacy_settings always updated (best effort)
491 convert_link_ksettings_to_legacy_settings(
492 struct ethtool_cmd
*legacy_settings
,
493 const struct ethtool_link_ksettings
*link_ksettings
)
497 memset(legacy_settings
, 0, sizeof(*legacy_settings
));
498 /* this also clears the deprecated fields in legacy structure:
504 retval
&= ethtool_convert_link_mode_to_legacy_u32(
505 &legacy_settings
->supported
,
506 link_ksettings
->link_modes
.supported
);
507 retval
&= ethtool_convert_link_mode_to_legacy_u32(
508 &legacy_settings
->advertising
,
509 link_ksettings
->link_modes
.advertising
);
510 retval
&= ethtool_convert_link_mode_to_legacy_u32(
511 &legacy_settings
->lp_advertising
,
512 link_ksettings
->link_modes
.lp_advertising
);
513 ethtool_cmd_speed_set(legacy_settings
, link_ksettings
->base
.speed
);
514 legacy_settings
->duplex
515 = link_ksettings
->base
.duplex
;
516 legacy_settings
->port
517 = link_ksettings
->base
.port
;
518 legacy_settings
->phy_address
519 = link_ksettings
->base
.phy_address
;
520 legacy_settings
->autoneg
521 = link_ksettings
->base
.autoneg
;
522 legacy_settings
->mdio_support
523 = link_ksettings
->base
.mdio_support
;
524 legacy_settings
->eth_tp_mdix
525 = link_ksettings
->base
.eth_tp_mdix
;
526 legacy_settings
->eth_tp_mdix_ctrl
527 = link_ksettings
->base
.eth_tp_mdix_ctrl
;
531 /* number of 32-bit words to store the user's link mode bitmaps */
532 #define __ETHTOOL_LINK_MODE_MASK_NU32 \
533 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
535 /* layout of the struct passed from/to userland */
536 struct ethtool_link_usettings
{
537 struct ethtool_link_settings base
;
539 __u32 supported
[__ETHTOOL_LINK_MODE_MASK_NU32
];
540 __u32 advertising
[__ETHTOOL_LINK_MODE_MASK_NU32
];
541 __u32 lp_advertising
[__ETHTOOL_LINK_MODE_MASK_NU32
];
545 /* Internal kernel helper to query a device ethtool_link_settings.
547 * Backward compatibility note: for compatibility with legacy drivers
548 * that implement only the ethtool_cmd API, this has to work with both
549 * drivers implementing get_link_ksettings API and drivers
550 * implementing get_settings API. When drivers implement get_settings
551 * and report ethtool_cmd deprecated fields
552 * (transceiver/maxrxpkt/maxtxpkt), these fields are silently ignored
553 * because the resulting struct ethtool_link_settings does not report them.
555 int __ethtool_get_link_ksettings(struct net_device
*dev
,
556 struct ethtool_link_ksettings
*link_ksettings
)
559 struct ethtool_cmd cmd
;
563 if (dev
->ethtool_ops
->get_link_ksettings
) {
564 memset(link_ksettings
, 0, sizeof(*link_ksettings
));
565 return dev
->ethtool_ops
->get_link_ksettings(dev
,
569 /* driver doesn't support %ethtool_link_ksettings API. revert to
570 * legacy %ethtool_cmd API, unless it's not supported either.
571 * TODO: remove when ethtool_ops::get_settings disappears internally
573 if (!dev
->ethtool_ops
->get_settings
)
576 memset(&cmd
, 0, sizeof(cmd
));
577 cmd
.cmd
= ETHTOOL_GSET
;
578 err
= dev
->ethtool_ops
->get_settings(dev
, &cmd
);
582 /* we ignore deprecated fields transceiver/maxrxpkt/maxtxpkt
584 convert_legacy_settings_to_link_ksettings(link_ksettings
, &cmd
);
587 EXPORT_SYMBOL(__ethtool_get_link_ksettings
);
589 /* convert ethtool_link_usettings in user space to a kernel internal
590 * ethtool_link_ksettings. return 0 on success, errno on error.
592 static int load_link_ksettings_from_user(struct ethtool_link_ksettings
*to
,
593 const void __user
*from
)
595 struct ethtool_link_usettings link_usettings
;
597 if (copy_from_user(&link_usettings
, from
, sizeof(link_usettings
)))
600 memcpy(&to
->base
, &link_usettings
.base
, sizeof(to
->base
));
601 bitmap_from_u32array(to
->link_modes
.supported
,
602 __ETHTOOL_LINK_MODE_MASK_NBITS
,
603 link_usettings
.link_modes
.supported
,
604 __ETHTOOL_LINK_MODE_MASK_NU32
);
605 bitmap_from_u32array(to
->link_modes
.advertising
,
606 __ETHTOOL_LINK_MODE_MASK_NBITS
,
607 link_usettings
.link_modes
.advertising
,
608 __ETHTOOL_LINK_MODE_MASK_NU32
);
609 bitmap_from_u32array(to
->link_modes
.lp_advertising
,
610 __ETHTOOL_LINK_MODE_MASK_NBITS
,
611 link_usettings
.link_modes
.lp_advertising
,
612 __ETHTOOL_LINK_MODE_MASK_NU32
);
617 /* convert a kernel internal ethtool_link_ksettings to
618 * ethtool_link_usettings in user space. return 0 on success, errno on
622 store_link_ksettings_for_user(void __user
*to
,
623 const struct ethtool_link_ksettings
*from
)
625 struct ethtool_link_usettings link_usettings
;
627 memcpy(&link_usettings
.base
, &from
->base
, sizeof(link_usettings
));
628 bitmap_to_u32array(link_usettings
.link_modes
.supported
,
629 __ETHTOOL_LINK_MODE_MASK_NU32
,
630 from
->link_modes
.supported
,
631 __ETHTOOL_LINK_MODE_MASK_NBITS
);
632 bitmap_to_u32array(link_usettings
.link_modes
.advertising
,
633 __ETHTOOL_LINK_MODE_MASK_NU32
,
634 from
->link_modes
.advertising
,
635 __ETHTOOL_LINK_MODE_MASK_NBITS
);
636 bitmap_to_u32array(link_usettings
.link_modes
.lp_advertising
,
637 __ETHTOOL_LINK_MODE_MASK_NU32
,
638 from
->link_modes
.lp_advertising
,
639 __ETHTOOL_LINK_MODE_MASK_NBITS
);
641 if (copy_to_user(to
, &link_usettings
, sizeof(link_usettings
)))
647 /* Query device for its ethtool_link_settings.
649 * Backward compatibility note: this function must fail when driver
650 * does not implement ethtool::get_link_ksettings, even if legacy
651 * ethtool_ops::get_settings is implemented. This tells new versions
652 * of ethtool that they should use the legacy API %ETHTOOL_GSET for
653 * this driver, so that they can correctly access the ethtool_cmd
654 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
655 * implements ethtool_ops::get_settings anymore.
657 static int ethtool_get_link_ksettings(struct net_device
*dev
,
658 void __user
*useraddr
)
661 struct ethtool_link_ksettings link_ksettings
;
665 if (!dev
->ethtool_ops
->get_link_ksettings
)
668 /* handle bitmap nbits handshake */
669 if (copy_from_user(&link_ksettings
.base
, useraddr
,
670 sizeof(link_ksettings
.base
)))
673 if (__ETHTOOL_LINK_MODE_MASK_NU32
674 != link_ksettings
.base
.link_mode_masks_nwords
) {
675 /* wrong link mode nbits requested */
676 memset(&link_ksettings
, 0, sizeof(link_ksettings
));
677 link_ksettings
.base
.cmd
= ETHTOOL_GLINKSETTINGS
;
678 /* send back number of words required as negative val */
679 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32
<= S8_MAX
,
680 "need too many bits for link modes!");
681 link_ksettings
.base
.link_mode_masks_nwords
682 = -((s8
)__ETHTOOL_LINK_MODE_MASK_NU32
);
684 /* copy the base fields back to user, not the link
687 if (copy_to_user(useraddr
, &link_ksettings
.base
,
688 sizeof(link_ksettings
.base
)))
694 /* handshake successful: user/kernel agree on
695 * link_mode_masks_nwords
698 memset(&link_ksettings
, 0, sizeof(link_ksettings
));
699 err
= dev
->ethtool_ops
->get_link_ksettings(dev
, &link_ksettings
);
703 /* make sure we tell the right values to user */
704 link_ksettings
.base
.cmd
= ETHTOOL_GLINKSETTINGS
;
705 link_ksettings
.base
.link_mode_masks_nwords
706 = __ETHTOOL_LINK_MODE_MASK_NU32
;
708 return store_link_ksettings_for_user(useraddr
, &link_ksettings
);
711 /* Update device ethtool_link_settings.
713 * Backward compatibility note: this function must fail when driver
714 * does not implement ethtool::set_link_ksettings, even if legacy
715 * ethtool_ops::set_settings is implemented. This tells new versions
716 * of ethtool that they should use the legacy API %ETHTOOL_SSET for
717 * this driver, so that they can correctly update the ethtool_cmd
718 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
719 * implements ethtool_ops::get_settings anymore.
721 static int ethtool_set_link_ksettings(struct net_device
*dev
,
722 void __user
*useraddr
)
725 struct ethtool_link_ksettings link_ksettings
;
729 if (!dev
->ethtool_ops
->set_link_ksettings
)
732 /* make sure nbits field has expected value */
733 if (copy_from_user(&link_ksettings
.base
, useraddr
,
734 sizeof(link_ksettings
.base
)))
737 if (__ETHTOOL_LINK_MODE_MASK_NU32
738 != link_ksettings
.base
.link_mode_masks_nwords
)
741 /* copy the whole structure, now that we know it has expected
744 err
= load_link_ksettings_from_user(&link_ksettings
, useraddr
);
748 /* re-check nwords field, just in case */
749 if (__ETHTOOL_LINK_MODE_MASK_NU32
750 != link_ksettings
.base
.link_mode_masks_nwords
)
753 return dev
->ethtool_ops
->set_link_ksettings(dev
, &link_ksettings
);
757 warn_incomplete_ethtool_legacy_settings_conversion(const char *details
)
759 char name
[sizeof(current
->comm
)];
761 pr_info_once("warning: `%s' uses legacy ethtool link settings API, %s\n",
762 get_task_comm(name
, current
), details
);
765 /* Query device for its ethtool_cmd settings.
767 * Backward compatibility note: for compatibility with legacy ethtool,
768 * this has to work with both drivers implementing get_link_ksettings
769 * API and drivers implementing get_settings API. When drivers
770 * implement get_link_ksettings and report higher link mode bits, a
771 * kernel warning is logged once (with name of 1st driver/device) to
772 * recommend user to upgrade ethtool, but the command is successful
773 * (only the lower link mode bits reported back to user).
775 static int ethtool_get_settings(struct net_device
*dev
, void __user
*useraddr
)
777 struct ethtool_cmd cmd
;
781 if (dev
->ethtool_ops
->get_link_ksettings
) {
782 /* First, use link_ksettings API if it is supported */
784 struct ethtool_link_ksettings link_ksettings
;
786 memset(&link_ksettings
, 0, sizeof(link_ksettings
));
787 err
= dev
->ethtool_ops
->get_link_ksettings(dev
,
791 if (!convert_link_ksettings_to_legacy_settings(&cmd
,
793 warn_incomplete_ethtool_legacy_settings_conversion(
794 "link modes are only partially reported");
796 /* send a sensible cmd tag back to user */
797 cmd
.cmd
= ETHTOOL_GSET
;
799 /* driver doesn't support %ethtool_link_ksettings
800 * API. revert to legacy %ethtool_cmd API, unless it's
801 * not supported either.
805 if (!dev
->ethtool_ops
->get_settings
)
808 memset(&cmd
, 0, sizeof(cmd
));
809 cmd
.cmd
= ETHTOOL_GSET
;
810 err
= dev
->ethtool_ops
->get_settings(dev
, &cmd
);
815 if (copy_to_user(useraddr
, &cmd
, sizeof(cmd
)))
821 /* Update device link settings with given ethtool_cmd.
823 * Backward compatibility note: for compatibility with legacy ethtool,
824 * this has to work with both drivers implementing set_link_ksettings
825 * API and drivers implementing set_settings API. When drivers
826 * implement set_link_ksettings and user's request updates deprecated
827 * ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
828 * warning is logged once (with name of 1st driver/device) to
829 * recommend user to upgrade ethtool, and the request is rejected.
831 static int ethtool_set_settings(struct net_device
*dev
, void __user
*useraddr
)
833 struct ethtool_cmd cmd
;
837 if (copy_from_user(&cmd
, useraddr
, sizeof(cmd
)))
840 /* first, try new %ethtool_link_ksettings API. */
841 if (dev
->ethtool_ops
->set_link_ksettings
) {
842 struct ethtool_link_ksettings link_ksettings
;
844 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings
,
848 link_ksettings
.base
.cmd
= ETHTOOL_SLINKSETTINGS
;
849 link_ksettings
.base
.link_mode_masks_nwords
850 = __ETHTOOL_LINK_MODE_MASK_NU32
;
851 return dev
->ethtool_ops
->set_link_ksettings(dev
,
855 /* legacy %ethtool_cmd API */
857 /* TODO: return -EOPNOTSUPP when ethtool_ops::get_settings
858 * disappears internally
861 if (!dev
->ethtool_ops
->set_settings
)
864 return dev
->ethtool_ops
->set_settings(dev
, &cmd
);
867 static noinline_for_stack
int ethtool_get_drvinfo(struct net_device
*dev
,
868 void __user
*useraddr
)
870 struct ethtool_drvinfo info
;
871 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
873 memset(&info
, 0, sizeof(info
));
874 info
.cmd
= ETHTOOL_GDRVINFO
;
875 if (ops
->get_drvinfo
) {
876 ops
->get_drvinfo(dev
, &info
);
877 } else if (dev
->dev
.parent
&& dev
->dev
.parent
->driver
) {
878 strlcpy(info
.bus_info
, dev_name(dev
->dev
.parent
),
879 sizeof(info
.bus_info
));
880 strlcpy(info
.driver
, dev
->dev
.parent
->driver
->name
,
881 sizeof(info
.driver
));
887 * this method of obtaining string set info is deprecated;
888 * Use ETHTOOL_GSSET_INFO instead.
890 if (ops
->get_sset_count
) {
893 rc
= ops
->get_sset_count(dev
, ETH_SS_TEST
);
895 info
.testinfo_len
= rc
;
896 rc
= ops
->get_sset_count(dev
, ETH_SS_STATS
);
899 rc
= ops
->get_sset_count(dev
, ETH_SS_PRIV_FLAGS
);
901 info
.n_priv_flags
= rc
;
903 if (ops
->get_regs_len
)
904 info
.regdump_len
= ops
->get_regs_len(dev
);
905 if (ops
->get_eeprom_len
)
906 info
.eedump_len
= ops
->get_eeprom_len(dev
);
908 if (copy_to_user(useraddr
, &info
, sizeof(info
)))
913 static noinline_for_stack
int ethtool_get_sset_info(struct net_device
*dev
,
914 void __user
*useraddr
)
916 struct ethtool_sset_info info
;
918 int i
, idx
= 0, n_bits
= 0, ret
, rc
;
919 u32
*info_buf
= NULL
;
921 if (copy_from_user(&info
, useraddr
, sizeof(info
)))
924 /* store copy of mask, because we zero struct later on */
925 sset_mask
= info
.sset_mask
;
929 /* calculate size of return buffer */
930 n_bits
= hweight64(sset_mask
);
932 memset(&info
, 0, sizeof(info
));
933 info
.cmd
= ETHTOOL_GSSET_INFO
;
935 info_buf
= kzalloc(n_bits
* sizeof(u32
), GFP_USER
);
940 * fill return buffer based on input bitmask and successful
941 * get_sset_count return
943 for (i
= 0; i
< 64; i
++) {
944 if (!(sset_mask
& (1ULL << i
)))
947 rc
= __ethtool_get_sset_count(dev
, i
);
949 info
.sset_mask
|= (1ULL << i
);
950 info_buf
[idx
++] = rc
;
955 if (copy_to_user(useraddr
, &info
, sizeof(info
)))
958 useraddr
+= offsetof(struct ethtool_sset_info
, data
);
959 if (copy_to_user(useraddr
, info_buf
, idx
* sizeof(u32
)))
969 static noinline_for_stack
int ethtool_set_rxnfc(struct net_device
*dev
,
970 u32 cmd
, void __user
*useraddr
)
972 struct ethtool_rxnfc info
;
973 size_t info_size
= sizeof(info
);
976 if (!dev
->ethtool_ops
->set_rxnfc
)
979 /* struct ethtool_rxnfc was originally defined for
980 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
981 * members. User-space might still be using that
983 if (cmd
== ETHTOOL_SRXFH
)
984 info_size
= (offsetof(struct ethtool_rxnfc
, data
) +
987 if (copy_from_user(&info
, useraddr
, info_size
))
990 rc
= dev
->ethtool_ops
->set_rxnfc(dev
, &info
);
994 if (cmd
== ETHTOOL_SRXCLSRLINS
&&
995 copy_to_user(useraddr
, &info
, info_size
))
1001 static noinline_for_stack
int ethtool_get_rxnfc(struct net_device
*dev
,
1002 u32 cmd
, void __user
*useraddr
)
1004 struct ethtool_rxnfc info
;
1005 size_t info_size
= sizeof(info
);
1006 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1008 void *rule_buf
= NULL
;
1010 if (!ops
->get_rxnfc
)
1013 /* struct ethtool_rxnfc was originally defined for
1014 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
1015 * members. User-space might still be using that
1017 if (cmd
== ETHTOOL_GRXFH
)
1018 info_size
= (offsetof(struct ethtool_rxnfc
, data
) +
1021 if (copy_from_user(&info
, useraddr
, info_size
))
1024 if (info
.cmd
== ETHTOOL_GRXCLSRLALL
) {
1025 if (info
.rule_cnt
> 0) {
1026 if (info
.rule_cnt
<= KMALLOC_MAX_SIZE
/ sizeof(u32
))
1027 rule_buf
= kzalloc(info
.rule_cnt
* sizeof(u32
),
1034 ret
= ops
->get_rxnfc(dev
, &info
, rule_buf
);
1039 if (copy_to_user(useraddr
, &info
, info_size
))
1043 useraddr
+= offsetof(struct ethtool_rxnfc
, rule_locs
);
1044 if (copy_to_user(useraddr
, rule_buf
,
1045 info
.rule_cnt
* sizeof(u32
)))
1056 static int ethtool_copy_validate_indir(u32
*indir
, void __user
*useraddr
,
1057 struct ethtool_rxnfc
*rx_rings
,
1062 if (copy_from_user(indir
, useraddr
, size
* sizeof(indir
[0])))
1065 /* Validate ring indices */
1066 for (i
= 0; i
< size
; i
++)
1067 if (indir
[i
] >= rx_rings
->data
)
1073 u8 netdev_rss_key
[NETDEV_RSS_KEY_LEN
] __read_mostly
;
1075 void netdev_rss_key_fill(void *buffer
, size_t len
)
1077 BUG_ON(len
> sizeof(netdev_rss_key
));
1078 net_get_random_once(netdev_rss_key
, sizeof(netdev_rss_key
));
1079 memcpy(buffer
, netdev_rss_key
, len
);
1081 EXPORT_SYMBOL(netdev_rss_key_fill
);
1083 static int ethtool_get_max_rxfh_channel(struct net_device
*dev
, u32
*max
)
1085 u32 dev_size
, current_max
= 0;
1089 if (!dev
->ethtool_ops
->get_rxfh_indir_size
||
1090 !dev
->ethtool_ops
->get_rxfh
)
1092 dev_size
= dev
->ethtool_ops
->get_rxfh_indir_size(dev
);
1096 indir
= kcalloc(dev_size
, sizeof(indir
[0]), GFP_USER
);
1100 ret
= dev
->ethtool_ops
->get_rxfh(dev
, indir
, NULL
, NULL
);
1105 current_max
= max(current_max
, indir
[dev_size
]);
1114 static noinline_for_stack
int ethtool_get_rxfh_indir(struct net_device
*dev
,
1115 void __user
*useraddr
)
1117 u32 user_size
, dev_size
;
1121 if (!dev
->ethtool_ops
->get_rxfh_indir_size
||
1122 !dev
->ethtool_ops
->get_rxfh
)
1124 dev_size
= dev
->ethtool_ops
->get_rxfh_indir_size(dev
);
1128 if (copy_from_user(&user_size
,
1129 useraddr
+ offsetof(struct ethtool_rxfh_indir
, size
),
1133 if (copy_to_user(useraddr
+ offsetof(struct ethtool_rxfh_indir
, size
),
1134 &dev_size
, sizeof(dev_size
)))
1137 /* If the user buffer size is 0, this is just a query for the
1138 * device table size. Otherwise, if it's smaller than the
1139 * device table size it's an error.
1141 if (user_size
< dev_size
)
1142 return user_size
== 0 ? 0 : -EINVAL
;
1144 indir
= kcalloc(dev_size
, sizeof(indir
[0]), GFP_USER
);
1148 ret
= dev
->ethtool_ops
->get_rxfh(dev
, indir
, NULL
, NULL
);
1152 if (copy_to_user(useraddr
+
1153 offsetof(struct ethtool_rxfh_indir
, ring_index
[0]),
1154 indir
, dev_size
* sizeof(indir
[0])))
1162 static noinline_for_stack
int ethtool_set_rxfh_indir(struct net_device
*dev
,
1163 void __user
*useraddr
)
1165 struct ethtool_rxnfc rx_rings
;
1166 u32 user_size
, dev_size
, i
;
1168 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1170 u32 ringidx_offset
= offsetof(struct ethtool_rxfh_indir
, ring_index
[0]);
1172 if (!ops
->get_rxfh_indir_size
|| !ops
->set_rxfh
||
1176 dev_size
= ops
->get_rxfh_indir_size(dev
);
1180 if (copy_from_user(&user_size
,
1181 useraddr
+ offsetof(struct ethtool_rxfh_indir
, size
),
1185 if (user_size
!= 0 && user_size
!= dev_size
)
1188 indir
= kcalloc(dev_size
, sizeof(indir
[0]), GFP_USER
);
1192 rx_rings
.cmd
= ETHTOOL_GRXRINGS
;
1193 ret
= ops
->get_rxnfc(dev
, &rx_rings
, NULL
);
1197 if (user_size
== 0) {
1198 for (i
= 0; i
< dev_size
; i
++)
1199 indir
[i
] = ethtool_rxfh_indir_default(i
, rx_rings
.data
);
1201 ret
= ethtool_copy_validate_indir(indir
,
1202 useraddr
+ ringidx_offset
,
1209 ret
= ops
->set_rxfh(dev
, indir
, NULL
, ETH_RSS_HASH_NO_CHANGE
);
1213 /* indicate whether rxfh was set to default */
1215 dev
->priv_flags
&= ~IFF_RXFH_CONFIGURED
;
1217 dev
->priv_flags
|= IFF_RXFH_CONFIGURED
;
1224 static noinline_for_stack
int ethtool_get_rxfh(struct net_device
*dev
,
1225 void __user
*useraddr
)
1228 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1229 u32 user_indir_size
, user_key_size
;
1230 u32 dev_indir_size
= 0, dev_key_size
= 0;
1231 struct ethtool_rxfh rxfh
;
1242 if (ops
->get_rxfh_indir_size
)
1243 dev_indir_size
= ops
->get_rxfh_indir_size(dev
);
1244 if (ops
->get_rxfh_key_size
)
1245 dev_key_size
= ops
->get_rxfh_key_size(dev
);
1247 if (copy_from_user(&rxfh
, useraddr
, sizeof(rxfh
)))
1249 user_indir_size
= rxfh
.indir_size
;
1250 user_key_size
= rxfh
.key_size
;
1252 /* Check that reserved fields are 0 for now */
1253 if (rxfh
.rss_context
|| rxfh
.rsvd8
[0] || rxfh
.rsvd8
[1] ||
1254 rxfh
.rsvd8
[2] || rxfh
.rsvd32
)
1257 rxfh
.indir_size
= dev_indir_size
;
1258 rxfh
.key_size
= dev_key_size
;
1259 if (copy_to_user(useraddr
, &rxfh
, sizeof(rxfh
)))
1262 if ((user_indir_size
&& (user_indir_size
!= dev_indir_size
)) ||
1263 (user_key_size
&& (user_key_size
!= dev_key_size
)))
1266 indir_bytes
= user_indir_size
* sizeof(indir
[0]);
1267 total_size
= indir_bytes
+ user_key_size
;
1268 rss_config
= kzalloc(total_size
, GFP_USER
);
1272 if (user_indir_size
)
1273 indir
= (u32
*)rss_config
;
1276 hkey
= rss_config
+ indir_bytes
;
1278 ret
= dev
->ethtool_ops
->get_rxfh(dev
, indir
, hkey
, &dev_hfunc
);
1282 if (copy_to_user(useraddr
+ offsetof(struct ethtool_rxfh
, hfunc
),
1283 &dev_hfunc
, sizeof(rxfh
.hfunc
))) {
1285 } else if (copy_to_user(useraddr
+
1286 offsetof(struct ethtool_rxfh
, rss_config
[0]),
1287 rss_config
, total_size
)) {
1296 static noinline_for_stack
int ethtool_set_rxfh(struct net_device
*dev
,
1297 void __user
*useraddr
)
1300 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1301 struct ethtool_rxnfc rx_rings
;
1302 struct ethtool_rxfh rxfh
;
1303 u32 dev_indir_size
= 0, dev_key_size
= 0, i
;
1304 u32
*indir
= NULL
, indir_bytes
= 0;
1307 u32 rss_cfg_offset
= offsetof(struct ethtool_rxfh
, rss_config
[0]);
1309 if (!ops
->get_rxnfc
|| !ops
->set_rxfh
)
1312 if (ops
->get_rxfh_indir_size
)
1313 dev_indir_size
= ops
->get_rxfh_indir_size(dev
);
1314 if (ops
->get_rxfh_key_size
)
1315 dev_key_size
= ops
->get_rxfh_key_size(dev
);
1317 if (copy_from_user(&rxfh
, useraddr
, sizeof(rxfh
)))
1320 /* Check that reserved fields are 0 for now */
1321 if (rxfh
.rss_context
|| rxfh
.rsvd8
[0] || rxfh
.rsvd8
[1] ||
1322 rxfh
.rsvd8
[2] || rxfh
.rsvd32
)
1325 /* If either indir, hash key or function is valid, proceed further.
1326 * Must request at least one change: indir size, hash key or function.
1328 if ((rxfh
.indir_size
&&
1329 rxfh
.indir_size
!= ETH_RXFH_INDIR_NO_CHANGE
&&
1330 rxfh
.indir_size
!= dev_indir_size
) ||
1331 (rxfh
.key_size
&& (rxfh
.key_size
!= dev_key_size
)) ||
1332 (rxfh
.indir_size
== ETH_RXFH_INDIR_NO_CHANGE
&&
1333 rxfh
.key_size
== 0 && rxfh
.hfunc
== ETH_RSS_HASH_NO_CHANGE
))
1336 if (rxfh
.indir_size
!= ETH_RXFH_INDIR_NO_CHANGE
)
1337 indir_bytes
= dev_indir_size
* sizeof(indir
[0]);
1339 rss_config
= kzalloc(indir_bytes
+ rxfh
.key_size
, GFP_USER
);
1343 rx_rings
.cmd
= ETHTOOL_GRXRINGS
;
1344 ret
= ops
->get_rxnfc(dev
, &rx_rings
, NULL
);
1348 /* rxfh.indir_size == 0 means reset the indir table to default.
1349 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
1351 if (rxfh
.indir_size
&&
1352 rxfh
.indir_size
!= ETH_RXFH_INDIR_NO_CHANGE
) {
1353 indir
= (u32
*)rss_config
;
1354 ret
= ethtool_copy_validate_indir(indir
,
1355 useraddr
+ rss_cfg_offset
,
1360 } else if (rxfh
.indir_size
== 0) {
1361 indir
= (u32
*)rss_config
;
1362 for (i
= 0; i
< dev_indir_size
; i
++)
1363 indir
[i
] = ethtool_rxfh_indir_default(i
, rx_rings
.data
);
1366 if (rxfh
.key_size
) {
1367 hkey
= rss_config
+ indir_bytes
;
1368 if (copy_from_user(hkey
,
1369 useraddr
+ rss_cfg_offset
+ indir_bytes
,
1376 ret
= ops
->set_rxfh(dev
, indir
, hkey
, rxfh
.hfunc
);
1380 /* indicate whether rxfh was set to default */
1381 if (rxfh
.indir_size
== 0)
1382 dev
->priv_flags
&= ~IFF_RXFH_CONFIGURED
;
1383 else if (rxfh
.indir_size
!= ETH_RXFH_INDIR_NO_CHANGE
)
1384 dev
->priv_flags
|= IFF_RXFH_CONFIGURED
;
1391 static int ethtool_get_regs(struct net_device
*dev
, char __user
*useraddr
)
1393 struct ethtool_regs regs
;
1394 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1398 if (!ops
->get_regs
|| !ops
->get_regs_len
)
1401 if (copy_from_user(®s
, useraddr
, sizeof(regs
)))
1404 reglen
= ops
->get_regs_len(dev
);
1405 if (regs
.len
> reglen
)
1410 regbuf
= vzalloc(reglen
);
1415 ops
->get_regs(dev
, ®s
, regbuf
);
1418 if (copy_to_user(useraddr
, ®s
, sizeof(regs
)))
1420 useraddr
+= offsetof(struct ethtool_regs
, data
);
1421 if (regbuf
&& copy_to_user(useraddr
, regbuf
, regs
.len
))
1430 static int ethtool_reset(struct net_device
*dev
, char __user
*useraddr
)
1432 struct ethtool_value reset
;
1435 if (!dev
->ethtool_ops
->reset
)
1438 if (copy_from_user(&reset
, useraddr
, sizeof(reset
)))
1441 ret
= dev
->ethtool_ops
->reset(dev
, &reset
.data
);
1445 if (copy_to_user(useraddr
, &reset
, sizeof(reset
)))
1450 static int ethtool_get_wol(struct net_device
*dev
, char __user
*useraddr
)
1452 struct ethtool_wolinfo wol
= { .cmd
= ETHTOOL_GWOL
};
1454 if (!dev
->ethtool_ops
->get_wol
)
1457 dev
->ethtool_ops
->get_wol(dev
, &wol
);
1459 if (copy_to_user(useraddr
, &wol
, sizeof(wol
)))
1464 static int ethtool_set_wol(struct net_device
*dev
, char __user
*useraddr
)
1466 struct ethtool_wolinfo wol
;
1468 if (!dev
->ethtool_ops
->set_wol
)
1471 if (copy_from_user(&wol
, useraddr
, sizeof(wol
)))
1474 return dev
->ethtool_ops
->set_wol(dev
, &wol
);
1477 static int ethtool_get_eee(struct net_device
*dev
, char __user
*useraddr
)
1479 struct ethtool_eee edata
;
1482 if (!dev
->ethtool_ops
->get_eee
)
1485 memset(&edata
, 0, sizeof(struct ethtool_eee
));
1486 edata
.cmd
= ETHTOOL_GEEE
;
1487 rc
= dev
->ethtool_ops
->get_eee(dev
, &edata
);
1492 if (copy_to_user(useraddr
, &edata
, sizeof(edata
)))
1498 static int ethtool_set_eee(struct net_device
*dev
, char __user
*useraddr
)
1500 struct ethtool_eee edata
;
1502 if (!dev
->ethtool_ops
->set_eee
)
1505 if (copy_from_user(&edata
, useraddr
, sizeof(edata
)))
1508 return dev
->ethtool_ops
->set_eee(dev
, &edata
);
1511 static int ethtool_nway_reset(struct net_device
*dev
)
1513 if (!dev
->ethtool_ops
->nway_reset
)
1516 return dev
->ethtool_ops
->nway_reset(dev
);
1519 static int ethtool_get_link(struct net_device
*dev
, char __user
*useraddr
)
1521 struct ethtool_value edata
= { .cmd
= ETHTOOL_GLINK
};
1523 if (!dev
->ethtool_ops
->get_link
)
1526 edata
.data
= netif_running(dev
) && dev
->ethtool_ops
->get_link(dev
);
1528 if (copy_to_user(useraddr
, &edata
, sizeof(edata
)))
1533 static int ethtool_get_any_eeprom(struct net_device
*dev
, void __user
*useraddr
,
1534 int (*getter
)(struct net_device
*,
1535 struct ethtool_eeprom
*, u8
*),
1538 struct ethtool_eeprom eeprom
;
1539 void __user
*userbuf
= useraddr
+ sizeof(eeprom
);
1540 u32 bytes_remaining
;
1544 if (copy_from_user(&eeprom
, useraddr
, sizeof(eeprom
)))
1547 /* Check for wrap and zero */
1548 if (eeprom
.offset
+ eeprom
.len
<= eeprom
.offset
)
1551 /* Check for exceeding total eeprom len */
1552 if (eeprom
.offset
+ eeprom
.len
> total_len
)
1555 data
= kmalloc(PAGE_SIZE
, GFP_USER
);
1559 bytes_remaining
= eeprom
.len
;
1560 while (bytes_remaining
> 0) {
1561 eeprom
.len
= min(bytes_remaining
, (u32
)PAGE_SIZE
);
1563 ret
= getter(dev
, &eeprom
, data
);
1566 if (copy_to_user(userbuf
, data
, eeprom
.len
)) {
1570 userbuf
+= eeprom
.len
;
1571 eeprom
.offset
+= eeprom
.len
;
1572 bytes_remaining
-= eeprom
.len
;
1575 eeprom
.len
= userbuf
- (useraddr
+ sizeof(eeprom
));
1576 eeprom
.offset
-= eeprom
.len
;
1577 if (copy_to_user(useraddr
, &eeprom
, sizeof(eeprom
)))
1584 static int ethtool_get_eeprom(struct net_device
*dev
, void __user
*useraddr
)
1586 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1588 if (!ops
->get_eeprom
|| !ops
->get_eeprom_len
||
1589 !ops
->get_eeprom_len(dev
))
1592 return ethtool_get_any_eeprom(dev
, useraddr
, ops
->get_eeprom
,
1593 ops
->get_eeprom_len(dev
));
1596 static int ethtool_set_eeprom(struct net_device
*dev
, void __user
*useraddr
)
1598 struct ethtool_eeprom eeprom
;
1599 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1600 void __user
*userbuf
= useraddr
+ sizeof(eeprom
);
1601 u32 bytes_remaining
;
1605 if (!ops
->set_eeprom
|| !ops
->get_eeprom_len
||
1606 !ops
->get_eeprom_len(dev
))
1609 if (copy_from_user(&eeprom
, useraddr
, sizeof(eeprom
)))
1612 /* Check for wrap and zero */
1613 if (eeprom
.offset
+ eeprom
.len
<= eeprom
.offset
)
1616 /* Check for exceeding total eeprom len */
1617 if (eeprom
.offset
+ eeprom
.len
> ops
->get_eeprom_len(dev
))
1620 data
= kmalloc(PAGE_SIZE
, GFP_USER
);
1624 bytes_remaining
= eeprom
.len
;
1625 while (bytes_remaining
> 0) {
1626 eeprom
.len
= min(bytes_remaining
, (u32
)PAGE_SIZE
);
1628 if (copy_from_user(data
, userbuf
, eeprom
.len
)) {
1632 ret
= ops
->set_eeprom(dev
, &eeprom
, data
);
1635 userbuf
+= eeprom
.len
;
1636 eeprom
.offset
+= eeprom
.len
;
1637 bytes_remaining
-= eeprom
.len
;
1644 static noinline_for_stack
int ethtool_get_coalesce(struct net_device
*dev
,
1645 void __user
*useraddr
)
1647 struct ethtool_coalesce coalesce
= { .cmd
= ETHTOOL_GCOALESCE
};
1649 if (!dev
->ethtool_ops
->get_coalesce
)
1652 dev
->ethtool_ops
->get_coalesce(dev
, &coalesce
);
1654 if (copy_to_user(useraddr
, &coalesce
, sizeof(coalesce
)))
1659 static noinline_for_stack
int ethtool_set_coalesce(struct net_device
*dev
,
1660 void __user
*useraddr
)
1662 struct ethtool_coalesce coalesce
;
1664 if (!dev
->ethtool_ops
->set_coalesce
)
1667 if (copy_from_user(&coalesce
, useraddr
, sizeof(coalesce
)))
1670 return dev
->ethtool_ops
->set_coalesce(dev
, &coalesce
);
1673 static int ethtool_get_ringparam(struct net_device
*dev
, void __user
*useraddr
)
1675 struct ethtool_ringparam ringparam
= { .cmd
= ETHTOOL_GRINGPARAM
};
1677 if (!dev
->ethtool_ops
->get_ringparam
)
1680 dev
->ethtool_ops
->get_ringparam(dev
, &ringparam
);
1682 if (copy_to_user(useraddr
, &ringparam
, sizeof(ringparam
)))
1687 static int ethtool_set_ringparam(struct net_device
*dev
, void __user
*useraddr
)
1689 struct ethtool_ringparam ringparam
;
1691 if (!dev
->ethtool_ops
->set_ringparam
)
1694 if (copy_from_user(&ringparam
, useraddr
, sizeof(ringparam
)))
1697 return dev
->ethtool_ops
->set_ringparam(dev
, &ringparam
);
1700 static noinline_for_stack
int ethtool_get_channels(struct net_device
*dev
,
1701 void __user
*useraddr
)
1703 struct ethtool_channels channels
= { .cmd
= ETHTOOL_GCHANNELS
};
1705 if (!dev
->ethtool_ops
->get_channels
)
1708 dev
->ethtool_ops
->get_channels(dev
, &channels
);
1710 if (copy_to_user(useraddr
, &channels
, sizeof(channels
)))
1715 static noinline_for_stack
int ethtool_set_channels(struct net_device
*dev
,
1716 void __user
*useraddr
)
1718 struct ethtool_channels channels
, max
= { .cmd
= ETHTOOL_GCHANNELS
};
1719 u32 max_rx_in_use
= 0;
1721 if (!dev
->ethtool_ops
->set_channels
|| !dev
->ethtool_ops
->get_channels
)
1724 if (copy_from_user(&channels
, useraddr
, sizeof(channels
)))
1727 dev
->ethtool_ops
->get_channels(dev
, &max
);
1729 /* ensure new counts are within the maximums */
1730 if ((channels
.rx_count
> max
.max_rx
) ||
1731 (channels
.tx_count
> max
.max_tx
) ||
1732 (channels
.combined_count
> max
.max_combined
) ||
1733 (channels
.other_count
> max
.max_other
))
1736 /* ensure the new Rx count fits within the configured Rx flow
1737 * indirection table settings */
1738 if (netif_is_rxfh_configured(dev
) &&
1739 !ethtool_get_max_rxfh_channel(dev
, &max_rx_in_use
) &&
1740 (channels
.combined_count
+ channels
.rx_count
) <= max_rx_in_use
)
1743 return dev
->ethtool_ops
->set_channels(dev
, &channels
);
1746 static int ethtool_get_pauseparam(struct net_device
*dev
, void __user
*useraddr
)
1748 struct ethtool_pauseparam pauseparam
= { ETHTOOL_GPAUSEPARAM
};
1750 if (!dev
->ethtool_ops
->get_pauseparam
)
1753 dev
->ethtool_ops
->get_pauseparam(dev
, &pauseparam
);
1755 if (copy_to_user(useraddr
, &pauseparam
, sizeof(pauseparam
)))
1760 static int ethtool_set_pauseparam(struct net_device
*dev
, void __user
*useraddr
)
1762 struct ethtool_pauseparam pauseparam
;
1764 if (!dev
->ethtool_ops
->set_pauseparam
)
1767 if (copy_from_user(&pauseparam
, useraddr
, sizeof(pauseparam
)))
1770 return dev
->ethtool_ops
->set_pauseparam(dev
, &pauseparam
);
1773 static int ethtool_self_test(struct net_device
*dev
, char __user
*useraddr
)
1775 struct ethtool_test test
;
1776 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1780 if (!ops
->self_test
|| !ops
->get_sset_count
)
1783 test_len
= ops
->get_sset_count(dev
, ETH_SS_TEST
);
1786 WARN_ON(test_len
== 0);
1788 if (copy_from_user(&test
, useraddr
, sizeof(test
)))
1791 test
.len
= test_len
;
1792 data
= kmalloc(test_len
* sizeof(u64
), GFP_USER
);
1796 ops
->self_test(dev
, &test
, data
);
1799 if (copy_to_user(useraddr
, &test
, sizeof(test
)))
1801 useraddr
+= sizeof(test
);
1802 if (copy_to_user(useraddr
, data
, test
.len
* sizeof(u64
)))
1811 static int ethtool_get_strings(struct net_device
*dev
, void __user
*useraddr
)
1813 struct ethtool_gstrings gstrings
;
1817 if (copy_from_user(&gstrings
, useraddr
, sizeof(gstrings
)))
1820 ret
= __ethtool_get_sset_count(dev
, gstrings
.string_set
);
1823 if (ret
> S32_MAX
/ ETH_GSTRING_LEN
)
1828 data
= vzalloc(gstrings
.len
* ETH_GSTRING_LEN
);
1829 if (gstrings
.len
&& !data
)
1832 __ethtool_get_strings(dev
, gstrings
.string_set
, data
);
1835 if (copy_to_user(useraddr
, &gstrings
, sizeof(gstrings
)))
1837 useraddr
+= sizeof(gstrings
);
1839 copy_to_user(useraddr
, data
, gstrings
.len
* ETH_GSTRING_LEN
))
1848 static int ethtool_phys_id(struct net_device
*dev
, void __user
*useraddr
)
1850 struct ethtool_value id
;
1852 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1855 if (!ops
->set_phys_id
)
1861 if (copy_from_user(&id
, useraddr
, sizeof(id
)))
1864 rc
= ops
->set_phys_id(dev
, ETHTOOL_ID_ACTIVE
);
1868 /* Drop the RTNL lock while waiting, but prevent reentry or
1869 * removal of the device.
1876 /* Driver will handle this itself */
1877 schedule_timeout_interruptible(
1878 id
.data
? (id
.data
* HZ
) : MAX_SCHEDULE_TIMEOUT
);
1880 /* Driver expects to be called at twice the frequency in rc */
1881 int n
= rc
* 2, i
, interval
= HZ
/ n
;
1883 /* Count down seconds */
1885 /* Count down iterations per second */
1889 rc
= ops
->set_phys_id(dev
,
1890 (i
& 1) ? ETHTOOL_ID_OFF
: ETHTOOL_ID_ON
);
1894 schedule_timeout_interruptible(interval
);
1895 } while (!signal_pending(current
) && --i
!= 0);
1896 } while (!signal_pending(current
) &&
1897 (id
.data
== 0 || --id
.data
!= 0));
1904 (void) ops
->set_phys_id(dev
, ETHTOOL_ID_INACTIVE
);
1908 static int ethtool_get_stats(struct net_device
*dev
, void __user
*useraddr
)
1910 struct ethtool_stats stats
;
1911 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1915 if (!ops
->get_ethtool_stats
|| !ops
->get_sset_count
)
1918 n_stats
= ops
->get_sset_count(dev
, ETH_SS_STATS
);
1921 if (n_stats
> S32_MAX
/ sizeof(u64
))
1923 WARN_ON_ONCE(!n_stats
);
1924 if (copy_from_user(&stats
, useraddr
, sizeof(stats
)))
1927 stats
.n_stats
= n_stats
;
1928 data
= vzalloc(n_stats
* sizeof(u64
));
1929 if (n_stats
&& !data
)
1932 ops
->get_ethtool_stats(dev
, &stats
, data
);
1935 if (copy_to_user(useraddr
, &stats
, sizeof(stats
)))
1937 useraddr
+= sizeof(stats
);
1938 if (n_stats
&& copy_to_user(useraddr
, data
, n_stats
* sizeof(u64
)))
1947 static int ethtool_get_phy_stats(struct net_device
*dev
, void __user
*useraddr
)
1949 struct ethtool_stats stats
;
1950 struct phy_device
*phydev
= dev
->phydev
;
1957 n_stats
= phy_get_sset_count(phydev
);
1960 if (n_stats
> S32_MAX
/ sizeof(u64
))
1962 WARN_ON_ONCE(!n_stats
);
1964 if (copy_from_user(&stats
, useraddr
, sizeof(stats
)))
1967 stats
.n_stats
= n_stats
;
1968 data
= vzalloc(n_stats
* sizeof(u64
));
1969 if (n_stats
&& !data
)
1972 mutex_lock(&phydev
->lock
);
1973 phydev
->drv
->get_stats(phydev
, &stats
, data
);
1974 mutex_unlock(&phydev
->lock
);
1977 if (copy_to_user(useraddr
, &stats
, sizeof(stats
)))
1979 useraddr
+= sizeof(stats
);
1980 if (n_stats
&& copy_to_user(useraddr
, data
, n_stats
* sizeof(u64
)))
1989 static int ethtool_get_perm_addr(struct net_device
*dev
, void __user
*useraddr
)
1991 struct ethtool_perm_addr epaddr
;
1993 if (copy_from_user(&epaddr
, useraddr
, sizeof(epaddr
)))
1996 if (epaddr
.size
< dev
->addr_len
)
1998 epaddr
.size
= dev
->addr_len
;
2000 if (copy_to_user(useraddr
, &epaddr
, sizeof(epaddr
)))
2002 useraddr
+= sizeof(epaddr
);
2003 if (copy_to_user(useraddr
, dev
->perm_addr
, epaddr
.size
))
2008 static int ethtool_get_value(struct net_device
*dev
, char __user
*useraddr
,
2009 u32 cmd
, u32 (*actor
)(struct net_device
*))
2011 struct ethtool_value edata
= { .cmd
= cmd
};
2016 edata
.data
= actor(dev
);
2018 if (copy_to_user(useraddr
, &edata
, sizeof(edata
)))
2023 static int ethtool_set_value_void(struct net_device
*dev
, char __user
*useraddr
,
2024 void (*actor
)(struct net_device
*, u32
))
2026 struct ethtool_value edata
;
2031 if (copy_from_user(&edata
, useraddr
, sizeof(edata
)))
2034 actor(dev
, edata
.data
);
2038 static int ethtool_set_value(struct net_device
*dev
, char __user
*useraddr
,
2039 int (*actor
)(struct net_device
*, u32
))
2041 struct ethtool_value edata
;
2046 if (copy_from_user(&edata
, useraddr
, sizeof(edata
)))
2049 return actor(dev
, edata
.data
);
2052 static noinline_for_stack
int ethtool_flash_device(struct net_device
*dev
,
2053 char __user
*useraddr
)
2055 struct ethtool_flash efl
;
2057 if (copy_from_user(&efl
, useraddr
, sizeof(efl
)))
2060 if (!dev
->ethtool_ops
->flash_device
)
2063 efl
.data
[ETHTOOL_FLASH_MAX_FILENAME
- 1] = 0;
2065 return dev
->ethtool_ops
->flash_device(dev
, &efl
);
2068 static int ethtool_set_dump(struct net_device
*dev
,
2069 void __user
*useraddr
)
2071 struct ethtool_dump dump
;
2073 if (!dev
->ethtool_ops
->set_dump
)
2076 if (copy_from_user(&dump
, useraddr
, sizeof(dump
)))
2079 return dev
->ethtool_ops
->set_dump(dev
, &dump
);
2082 static int ethtool_get_dump_flag(struct net_device
*dev
,
2083 void __user
*useraddr
)
2086 struct ethtool_dump dump
;
2087 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2089 if (!ops
->get_dump_flag
)
2092 if (copy_from_user(&dump
, useraddr
, sizeof(dump
)))
2095 ret
= ops
->get_dump_flag(dev
, &dump
);
2099 if (copy_to_user(useraddr
, &dump
, sizeof(dump
)))
2104 static int ethtool_get_dump_data(struct net_device
*dev
,
2105 void __user
*useraddr
)
2109 struct ethtool_dump dump
, tmp
;
2110 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2113 if (!ops
->get_dump_data
|| !ops
->get_dump_flag
)
2116 if (copy_from_user(&dump
, useraddr
, sizeof(dump
)))
2119 memset(&tmp
, 0, sizeof(tmp
));
2120 tmp
.cmd
= ETHTOOL_GET_DUMP_FLAG
;
2121 ret
= ops
->get_dump_flag(dev
, &tmp
);
2125 len
= min(tmp
.len
, dump
.len
);
2129 /* Don't ever let the driver think there's more space available
2130 * than it requested with .get_dump_flag().
2134 /* Always allocate enough space to hold the whole thing so that the
2135 * driver does not need to check the length and bother with partial
2138 data
= vzalloc(tmp
.len
);
2141 ret
= ops
->get_dump_data(dev
, &dump
, data
);
2145 /* There are two sane possibilities:
2146 * 1. The driver's .get_dump_data() does not touch dump.len.
2147 * 2. Or it may set dump.len to how much it really writes, which
2148 * should be tmp.len (or len if it can do a partial dump).
2149 * In any case respond to userspace with the actual length of data
2152 WARN_ON(dump
.len
!= len
&& dump
.len
!= tmp
.len
);
2155 if (copy_to_user(useraddr
, &dump
, sizeof(dump
))) {
2159 useraddr
+= offsetof(struct ethtool_dump
, data
);
2160 if (copy_to_user(useraddr
, data
, len
))
2167 static int ethtool_get_ts_info(struct net_device
*dev
, void __user
*useraddr
)
2170 struct ethtool_ts_info info
;
2171 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2172 struct phy_device
*phydev
= dev
->phydev
;
2174 memset(&info
, 0, sizeof(info
));
2175 info
.cmd
= ETHTOOL_GET_TS_INFO
;
2177 if (phydev
&& phydev
->drv
&& phydev
->drv
->ts_info
) {
2178 err
= phydev
->drv
->ts_info(phydev
, &info
);
2179 } else if (ops
->get_ts_info
) {
2180 err
= ops
->get_ts_info(dev
, &info
);
2182 info
.so_timestamping
=
2183 SOF_TIMESTAMPING_RX_SOFTWARE
|
2184 SOF_TIMESTAMPING_SOFTWARE
;
2185 info
.phc_index
= -1;
2191 if (copy_to_user(useraddr
, &info
, sizeof(info
)))
2197 static int __ethtool_get_module_info(struct net_device
*dev
,
2198 struct ethtool_modinfo
*modinfo
)
2200 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2201 struct phy_device
*phydev
= dev
->phydev
;
2203 if (phydev
&& phydev
->drv
&& phydev
->drv
->module_info
)
2204 return phydev
->drv
->module_info(phydev
, modinfo
);
2206 if (ops
->get_module_info
)
2207 return ops
->get_module_info(dev
, modinfo
);
2212 static int ethtool_get_module_info(struct net_device
*dev
,
2213 void __user
*useraddr
)
2216 struct ethtool_modinfo modinfo
;
2218 if (copy_from_user(&modinfo
, useraddr
, sizeof(modinfo
)))
2221 ret
= __ethtool_get_module_info(dev
, &modinfo
);
2225 if (copy_to_user(useraddr
, &modinfo
, sizeof(modinfo
)))
2231 static int __ethtool_get_module_eeprom(struct net_device
*dev
,
2232 struct ethtool_eeprom
*ee
, u8
*data
)
2234 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2235 struct phy_device
*phydev
= dev
->phydev
;
2237 if (phydev
&& phydev
->drv
&& phydev
->drv
->module_eeprom
)
2238 return phydev
->drv
->module_eeprom(phydev
, ee
, data
);
2240 if (ops
->get_module_eeprom
)
2241 return ops
->get_module_eeprom(dev
, ee
, data
);
2246 static int ethtool_get_module_eeprom(struct net_device
*dev
,
2247 void __user
*useraddr
)
2250 struct ethtool_modinfo modinfo
;
2252 ret
= __ethtool_get_module_info(dev
, &modinfo
);
2256 return ethtool_get_any_eeprom(dev
, useraddr
,
2257 __ethtool_get_module_eeprom
,
2258 modinfo
.eeprom_len
);
2261 static int ethtool_tunable_valid(const struct ethtool_tunable
*tuna
)
2264 case ETHTOOL_RX_COPYBREAK
:
2265 case ETHTOOL_TX_COPYBREAK
:
2266 if (tuna
->len
!= sizeof(u32
) ||
2267 tuna
->type_id
!= ETHTOOL_TUNABLE_U32
)
2277 static int ethtool_get_tunable(struct net_device
*dev
, void __user
*useraddr
)
2280 struct ethtool_tunable tuna
;
2281 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2284 if (!ops
->get_tunable
)
2286 if (copy_from_user(&tuna
, useraddr
, sizeof(tuna
)))
2288 ret
= ethtool_tunable_valid(&tuna
);
2291 data
= kmalloc(tuna
.len
, GFP_USER
);
2294 ret
= ops
->get_tunable(dev
, &tuna
, data
);
2297 useraddr
+= sizeof(tuna
);
2299 if (copy_to_user(useraddr
, data
, tuna
.len
))
2308 static int ethtool_set_tunable(struct net_device
*dev
, void __user
*useraddr
)
2311 struct ethtool_tunable tuna
;
2312 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2315 if (!ops
->set_tunable
)
2317 if (copy_from_user(&tuna
, useraddr
, sizeof(tuna
)))
2319 ret
= ethtool_tunable_valid(&tuna
);
2322 useraddr
+= sizeof(tuna
);
2323 data
= memdup_user(useraddr
, tuna
.len
);
2325 return PTR_ERR(data
);
2326 ret
= ops
->set_tunable(dev
, &tuna
, data
);
2332 static int ethtool_get_per_queue_coalesce(struct net_device
*dev
,
2333 void __user
*useraddr
,
2334 struct ethtool_per_queue_op
*per_queue_opt
)
2338 DECLARE_BITMAP(queue_mask
, MAX_NUM_QUEUE
);
2340 if (!dev
->ethtool_ops
->get_per_queue_coalesce
)
2343 useraddr
+= sizeof(*per_queue_opt
);
2345 bitmap_from_u32array(queue_mask
,
2347 per_queue_opt
->queue_mask
,
2348 DIV_ROUND_UP(MAX_NUM_QUEUE
, 32));
2350 for_each_set_bit(bit
, queue_mask
, MAX_NUM_QUEUE
) {
2351 struct ethtool_coalesce coalesce
= { .cmd
= ETHTOOL_GCOALESCE
};
2353 ret
= dev
->ethtool_ops
->get_per_queue_coalesce(dev
, bit
, &coalesce
);
2356 if (copy_to_user(useraddr
, &coalesce
, sizeof(coalesce
)))
2358 useraddr
+= sizeof(coalesce
);
2364 static int ethtool_set_per_queue_coalesce(struct net_device
*dev
,
2365 void __user
*useraddr
,
2366 struct ethtool_per_queue_op
*per_queue_opt
)
2371 struct ethtool_coalesce
*backup
= NULL
, *tmp
= NULL
;
2372 DECLARE_BITMAP(queue_mask
, MAX_NUM_QUEUE
);
2374 if ((!dev
->ethtool_ops
->set_per_queue_coalesce
) ||
2375 (!dev
->ethtool_ops
->get_per_queue_coalesce
))
2378 useraddr
+= sizeof(*per_queue_opt
);
2380 bitmap_from_u32array(queue_mask
,
2382 per_queue_opt
->queue_mask
,
2383 DIV_ROUND_UP(MAX_NUM_QUEUE
, 32));
2384 n_queue
= bitmap_weight(queue_mask
, MAX_NUM_QUEUE
);
2385 tmp
= backup
= kmalloc_array(n_queue
, sizeof(*backup
), GFP_KERNEL
);
2389 for_each_set_bit(bit
, queue_mask
, MAX_NUM_QUEUE
) {
2390 struct ethtool_coalesce coalesce
;
2392 ret
= dev
->ethtool_ops
->get_per_queue_coalesce(dev
, bit
, tmp
);
2398 if (copy_from_user(&coalesce
, useraddr
, sizeof(coalesce
))) {
2403 ret
= dev
->ethtool_ops
->set_per_queue_coalesce(dev
, bit
, &coalesce
);
2407 useraddr
+= sizeof(coalesce
);
2413 for_each_set_bit(i
, queue_mask
, bit
) {
2414 dev
->ethtool_ops
->set_per_queue_coalesce(dev
, i
, tmp
);
2423 static int ethtool_set_per_queue(struct net_device
*dev
, void __user
*useraddr
)
2425 struct ethtool_per_queue_op per_queue_opt
;
2427 if (copy_from_user(&per_queue_opt
, useraddr
, sizeof(per_queue_opt
)))
2430 switch (per_queue_opt
.sub_command
) {
2431 case ETHTOOL_GCOALESCE
:
2432 return ethtool_get_per_queue_coalesce(dev
, useraddr
, &per_queue_opt
);
2433 case ETHTOOL_SCOALESCE
:
2434 return ethtool_set_per_queue_coalesce(dev
, useraddr
, &per_queue_opt
);
2440 static int ethtool_phy_tunable_valid(const struct ethtool_tunable
*tuna
)
2443 case ETHTOOL_PHY_DOWNSHIFT
:
2444 if (tuna
->len
!= sizeof(u8
) ||
2445 tuna
->type_id
!= ETHTOOL_TUNABLE_U8
)
2455 static int get_phy_tunable(struct net_device
*dev
, void __user
*useraddr
)
2458 struct ethtool_tunable tuna
;
2459 struct phy_device
*phydev
= dev
->phydev
;
2462 if (!(phydev
&& phydev
->drv
&& phydev
->drv
->get_tunable
))
2465 if (copy_from_user(&tuna
, useraddr
, sizeof(tuna
)))
2467 ret
= ethtool_phy_tunable_valid(&tuna
);
2470 data
= kmalloc(tuna
.len
, GFP_USER
);
2473 mutex_lock(&phydev
->lock
);
2474 ret
= phydev
->drv
->get_tunable(phydev
, &tuna
, data
);
2475 mutex_unlock(&phydev
->lock
);
2478 useraddr
+= sizeof(tuna
);
2480 if (copy_to_user(useraddr
, data
, tuna
.len
))
2489 static int set_phy_tunable(struct net_device
*dev
, void __user
*useraddr
)
2492 struct ethtool_tunable tuna
;
2493 struct phy_device
*phydev
= dev
->phydev
;
2496 if (!(phydev
&& phydev
->drv
&& phydev
->drv
->set_tunable
))
2498 if (copy_from_user(&tuna
, useraddr
, sizeof(tuna
)))
2500 ret
= ethtool_phy_tunable_valid(&tuna
);
2503 useraddr
+= sizeof(tuna
);
2504 data
= memdup_user(useraddr
, tuna
.len
);
2506 return PTR_ERR(data
);
2507 mutex_lock(&phydev
->lock
);
2508 ret
= phydev
->drv
->set_tunable(phydev
, &tuna
, data
);
2509 mutex_unlock(&phydev
->lock
);
2515 static int ethtool_get_fecparam(struct net_device
*dev
, void __user
*useraddr
)
2517 struct ethtool_fecparam fecparam
= { ETHTOOL_GFECPARAM
};
2519 if (!dev
->ethtool_ops
->get_fecparam
)
2522 dev
->ethtool_ops
->get_fecparam(dev
, &fecparam
);
2524 if (copy_to_user(useraddr
, &fecparam
, sizeof(fecparam
)))
2529 static int ethtool_set_fecparam(struct net_device
*dev
, void __user
*useraddr
)
2531 struct ethtool_fecparam fecparam
;
2533 if (!dev
->ethtool_ops
->set_fecparam
)
2536 if (copy_from_user(&fecparam
, useraddr
, sizeof(fecparam
)))
2539 return dev
->ethtool_ops
->set_fecparam(dev
, &fecparam
);
2542 /* The main entry point in this file. Called from net/core/dev_ioctl.c */
2544 int dev_ethtool(struct net
*net
, struct ifreq
*ifr
)
2546 struct net_device
*dev
= __dev_get_by_name(net
, ifr
->ifr_name
);
2547 void __user
*useraddr
= ifr
->ifr_data
;
2548 u32 ethcmd
, sub_cmd
;
2550 netdev_features_t old_features
;
2552 if (!dev
|| !netif_device_present(dev
))
2555 if (copy_from_user(ðcmd
, useraddr
, sizeof(ethcmd
)))
2558 if (ethcmd
== ETHTOOL_PERQUEUE
) {
2559 if (copy_from_user(&sub_cmd
, useraddr
+ sizeof(ethcmd
), sizeof(sub_cmd
)))
2564 /* Allow some commands to be done by anyone */
2567 case ETHTOOL_GDRVINFO
:
2568 case ETHTOOL_GMSGLVL
:
2570 case ETHTOOL_GCOALESCE
:
2571 case ETHTOOL_GRINGPARAM
:
2572 case ETHTOOL_GPAUSEPARAM
:
2573 case ETHTOOL_GRXCSUM
:
2574 case ETHTOOL_GTXCSUM
:
2576 case ETHTOOL_GSSET_INFO
:
2577 case ETHTOOL_GSTRINGS
:
2578 case ETHTOOL_GSTATS
:
2579 case ETHTOOL_GPHYSTATS
:
2581 case ETHTOOL_GPERMADDR
:
2584 case ETHTOOL_GFLAGS
:
2585 case ETHTOOL_GPFLAGS
:
2587 case ETHTOOL_GRXRINGS
:
2588 case ETHTOOL_GRXCLSRLCNT
:
2589 case ETHTOOL_GRXCLSRULE
:
2590 case ETHTOOL_GRXCLSRLALL
:
2591 case ETHTOOL_GRXFHINDIR
:
2593 case ETHTOOL_GFEATURES
:
2594 case ETHTOOL_GCHANNELS
:
2595 case ETHTOOL_GET_TS_INFO
:
2597 case ETHTOOL_GTUNABLE
:
2598 case ETHTOOL_PHY_GTUNABLE
:
2599 case ETHTOOL_GLINKSETTINGS
:
2600 case ETHTOOL_GFECPARAM
:
2603 if (!ns_capable(net
->user_ns
, CAP_NET_ADMIN
))
2607 if (dev
->ethtool_ops
->begin
) {
2608 rc
= dev
->ethtool_ops
->begin(dev
);
2612 old_features
= dev
->features
;
2616 rc
= ethtool_get_settings(dev
, useraddr
);
2619 rc
= ethtool_set_settings(dev
, useraddr
);
2621 case ETHTOOL_GDRVINFO
:
2622 rc
= ethtool_get_drvinfo(dev
, useraddr
);
2625 rc
= ethtool_get_regs(dev
, useraddr
);
2628 rc
= ethtool_get_wol(dev
, useraddr
);
2631 rc
= ethtool_set_wol(dev
, useraddr
);
2633 case ETHTOOL_GMSGLVL
:
2634 rc
= ethtool_get_value(dev
, useraddr
, ethcmd
,
2635 dev
->ethtool_ops
->get_msglevel
);
2637 case ETHTOOL_SMSGLVL
:
2638 rc
= ethtool_set_value_void(dev
, useraddr
,
2639 dev
->ethtool_ops
->set_msglevel
);
2642 rc
= ethtool_get_eee(dev
, useraddr
);
2645 rc
= ethtool_set_eee(dev
, useraddr
);
2647 case ETHTOOL_NWAY_RST
:
2648 rc
= ethtool_nway_reset(dev
);
2651 rc
= ethtool_get_link(dev
, useraddr
);
2653 case ETHTOOL_GEEPROM
:
2654 rc
= ethtool_get_eeprom(dev
, useraddr
);
2656 case ETHTOOL_SEEPROM
:
2657 rc
= ethtool_set_eeprom(dev
, useraddr
);
2659 case ETHTOOL_GCOALESCE
:
2660 rc
= ethtool_get_coalesce(dev
, useraddr
);
2662 case ETHTOOL_SCOALESCE
:
2663 rc
= ethtool_set_coalesce(dev
, useraddr
);
2665 case ETHTOOL_GRINGPARAM
:
2666 rc
= ethtool_get_ringparam(dev
, useraddr
);
2668 case ETHTOOL_SRINGPARAM
:
2669 rc
= ethtool_set_ringparam(dev
, useraddr
);
2671 case ETHTOOL_GPAUSEPARAM
:
2672 rc
= ethtool_get_pauseparam(dev
, useraddr
);
2674 case ETHTOOL_SPAUSEPARAM
:
2675 rc
= ethtool_set_pauseparam(dev
, useraddr
);
2678 rc
= ethtool_self_test(dev
, useraddr
);
2680 case ETHTOOL_GSTRINGS
:
2681 rc
= ethtool_get_strings(dev
, useraddr
);
2683 case ETHTOOL_PHYS_ID
:
2684 rc
= ethtool_phys_id(dev
, useraddr
);
2686 case ETHTOOL_GSTATS
:
2687 rc
= ethtool_get_stats(dev
, useraddr
);
2689 case ETHTOOL_GPERMADDR
:
2690 rc
= ethtool_get_perm_addr(dev
, useraddr
);
2692 case ETHTOOL_GFLAGS
:
2693 rc
= ethtool_get_value(dev
, useraddr
, ethcmd
,
2694 __ethtool_get_flags
);
2696 case ETHTOOL_SFLAGS
:
2697 rc
= ethtool_set_value(dev
, useraddr
, __ethtool_set_flags
);
2699 case ETHTOOL_GPFLAGS
:
2700 rc
= ethtool_get_value(dev
, useraddr
, ethcmd
,
2701 dev
->ethtool_ops
->get_priv_flags
);
2703 case ETHTOOL_SPFLAGS
:
2704 rc
= ethtool_set_value(dev
, useraddr
,
2705 dev
->ethtool_ops
->set_priv_flags
);
2708 case ETHTOOL_GRXRINGS
:
2709 case ETHTOOL_GRXCLSRLCNT
:
2710 case ETHTOOL_GRXCLSRULE
:
2711 case ETHTOOL_GRXCLSRLALL
:
2712 rc
= ethtool_get_rxnfc(dev
, ethcmd
, useraddr
);
2715 case ETHTOOL_SRXCLSRLDEL
:
2716 case ETHTOOL_SRXCLSRLINS
:
2717 rc
= ethtool_set_rxnfc(dev
, ethcmd
, useraddr
);
2719 case ETHTOOL_FLASHDEV
:
2720 rc
= ethtool_flash_device(dev
, useraddr
);
2723 rc
= ethtool_reset(dev
, useraddr
);
2725 case ETHTOOL_GSSET_INFO
:
2726 rc
= ethtool_get_sset_info(dev
, useraddr
);
2728 case ETHTOOL_GRXFHINDIR
:
2729 rc
= ethtool_get_rxfh_indir(dev
, useraddr
);
2731 case ETHTOOL_SRXFHINDIR
:
2732 rc
= ethtool_set_rxfh_indir(dev
, useraddr
);
2735 rc
= ethtool_get_rxfh(dev
, useraddr
);
2738 rc
= ethtool_set_rxfh(dev
, useraddr
);
2740 case ETHTOOL_GFEATURES
:
2741 rc
= ethtool_get_features(dev
, useraddr
);
2743 case ETHTOOL_SFEATURES
:
2744 rc
= ethtool_set_features(dev
, useraddr
);
2746 case ETHTOOL_GTXCSUM
:
2747 case ETHTOOL_GRXCSUM
:
2752 rc
= ethtool_get_one_feature(dev
, useraddr
, ethcmd
);
2754 case ETHTOOL_STXCSUM
:
2755 case ETHTOOL_SRXCSUM
:
2760 rc
= ethtool_set_one_feature(dev
, useraddr
, ethcmd
);
2762 case ETHTOOL_GCHANNELS
:
2763 rc
= ethtool_get_channels(dev
, useraddr
);
2765 case ETHTOOL_SCHANNELS
:
2766 rc
= ethtool_set_channels(dev
, useraddr
);
2768 case ETHTOOL_SET_DUMP
:
2769 rc
= ethtool_set_dump(dev
, useraddr
);
2771 case ETHTOOL_GET_DUMP_FLAG
:
2772 rc
= ethtool_get_dump_flag(dev
, useraddr
);
2774 case ETHTOOL_GET_DUMP_DATA
:
2775 rc
= ethtool_get_dump_data(dev
, useraddr
);
2777 case ETHTOOL_GET_TS_INFO
:
2778 rc
= ethtool_get_ts_info(dev
, useraddr
);
2780 case ETHTOOL_GMODULEINFO
:
2781 rc
= ethtool_get_module_info(dev
, useraddr
);
2783 case ETHTOOL_GMODULEEEPROM
:
2784 rc
= ethtool_get_module_eeprom(dev
, useraddr
);
2786 case ETHTOOL_GTUNABLE
:
2787 rc
= ethtool_get_tunable(dev
, useraddr
);
2789 case ETHTOOL_STUNABLE
:
2790 rc
= ethtool_set_tunable(dev
, useraddr
);
2792 case ETHTOOL_GPHYSTATS
:
2793 rc
= ethtool_get_phy_stats(dev
, useraddr
);
2795 case ETHTOOL_PERQUEUE
:
2796 rc
= ethtool_set_per_queue(dev
, useraddr
);
2798 case ETHTOOL_GLINKSETTINGS
:
2799 rc
= ethtool_get_link_ksettings(dev
, useraddr
);
2801 case ETHTOOL_SLINKSETTINGS
:
2802 rc
= ethtool_set_link_ksettings(dev
, useraddr
);
2804 case ETHTOOL_PHY_GTUNABLE
:
2805 rc
= get_phy_tunable(dev
, useraddr
);
2807 case ETHTOOL_PHY_STUNABLE
:
2808 rc
= set_phy_tunable(dev
, useraddr
);
2810 case ETHTOOL_GFECPARAM
:
2811 rc
= ethtool_get_fecparam(dev
, useraddr
);
2813 case ETHTOOL_SFECPARAM
:
2814 rc
= ethtool_set_fecparam(dev
, useraddr
);
2820 if (dev
->ethtool_ops
->complete
)
2821 dev
->ethtool_ops
->complete(dev
);
2823 if (old_features
!= dev
->features
)
2824 netdev_features_change(dev
);