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
;
528 legacy_settings
->transceiver
529 = link_ksettings
->base
.transceiver
;
533 /* number of 32-bit words to store the user's link mode bitmaps */
534 #define __ETHTOOL_LINK_MODE_MASK_NU32 \
535 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
537 /* layout of the struct passed from/to userland */
538 struct ethtool_link_usettings
{
539 struct ethtool_link_settings base
;
541 __u32 supported
[__ETHTOOL_LINK_MODE_MASK_NU32
];
542 __u32 advertising
[__ETHTOOL_LINK_MODE_MASK_NU32
];
543 __u32 lp_advertising
[__ETHTOOL_LINK_MODE_MASK_NU32
];
547 /* Internal kernel helper to query a device ethtool_link_settings.
549 * Backward compatibility note: for compatibility with legacy drivers
550 * that implement only the ethtool_cmd API, this has to work with both
551 * drivers implementing get_link_ksettings API and drivers
552 * implementing get_settings API. When drivers implement get_settings
553 * and report ethtool_cmd deprecated fields
554 * (transceiver/maxrxpkt/maxtxpkt), these fields are silently ignored
555 * because the resulting struct ethtool_link_settings does not report them.
557 int __ethtool_get_link_ksettings(struct net_device
*dev
,
558 struct ethtool_link_ksettings
*link_ksettings
)
561 struct ethtool_cmd cmd
;
565 if (dev
->ethtool_ops
->get_link_ksettings
) {
566 memset(link_ksettings
, 0, sizeof(*link_ksettings
));
567 return dev
->ethtool_ops
->get_link_ksettings(dev
,
571 /* driver doesn't support %ethtool_link_ksettings API. revert to
572 * legacy %ethtool_cmd API, unless it's not supported either.
573 * TODO: remove when ethtool_ops::get_settings disappears internally
575 if (!dev
->ethtool_ops
->get_settings
)
578 memset(&cmd
, 0, sizeof(cmd
));
579 cmd
.cmd
= ETHTOOL_GSET
;
580 err
= dev
->ethtool_ops
->get_settings(dev
, &cmd
);
584 /* we ignore deprecated fields transceiver/maxrxpkt/maxtxpkt
586 convert_legacy_settings_to_link_ksettings(link_ksettings
, &cmd
);
589 EXPORT_SYMBOL(__ethtool_get_link_ksettings
);
591 /* convert ethtool_link_usettings in user space to a kernel internal
592 * ethtool_link_ksettings. return 0 on success, errno on error.
594 static int load_link_ksettings_from_user(struct ethtool_link_ksettings
*to
,
595 const void __user
*from
)
597 struct ethtool_link_usettings link_usettings
;
599 if (copy_from_user(&link_usettings
, from
, sizeof(link_usettings
)))
602 memcpy(&to
->base
, &link_usettings
.base
, sizeof(to
->base
));
603 bitmap_from_u32array(to
->link_modes
.supported
,
604 __ETHTOOL_LINK_MODE_MASK_NBITS
,
605 link_usettings
.link_modes
.supported
,
606 __ETHTOOL_LINK_MODE_MASK_NU32
);
607 bitmap_from_u32array(to
->link_modes
.advertising
,
608 __ETHTOOL_LINK_MODE_MASK_NBITS
,
609 link_usettings
.link_modes
.advertising
,
610 __ETHTOOL_LINK_MODE_MASK_NU32
);
611 bitmap_from_u32array(to
->link_modes
.lp_advertising
,
612 __ETHTOOL_LINK_MODE_MASK_NBITS
,
613 link_usettings
.link_modes
.lp_advertising
,
614 __ETHTOOL_LINK_MODE_MASK_NU32
);
619 /* convert a kernel internal ethtool_link_ksettings to
620 * ethtool_link_usettings in user space. return 0 on success, errno on
624 store_link_ksettings_for_user(void __user
*to
,
625 const struct ethtool_link_ksettings
*from
)
627 struct ethtool_link_usettings link_usettings
;
629 memcpy(&link_usettings
.base
, &from
->base
, sizeof(link_usettings
));
630 bitmap_to_u32array(link_usettings
.link_modes
.supported
,
631 __ETHTOOL_LINK_MODE_MASK_NU32
,
632 from
->link_modes
.supported
,
633 __ETHTOOL_LINK_MODE_MASK_NBITS
);
634 bitmap_to_u32array(link_usettings
.link_modes
.advertising
,
635 __ETHTOOL_LINK_MODE_MASK_NU32
,
636 from
->link_modes
.advertising
,
637 __ETHTOOL_LINK_MODE_MASK_NBITS
);
638 bitmap_to_u32array(link_usettings
.link_modes
.lp_advertising
,
639 __ETHTOOL_LINK_MODE_MASK_NU32
,
640 from
->link_modes
.lp_advertising
,
641 __ETHTOOL_LINK_MODE_MASK_NBITS
);
643 if (copy_to_user(to
, &link_usettings
, sizeof(link_usettings
)))
649 /* Query device for its ethtool_link_settings.
651 * Backward compatibility note: this function must fail when driver
652 * does not implement ethtool::get_link_ksettings, even if legacy
653 * ethtool_ops::get_settings is implemented. This tells new versions
654 * of ethtool that they should use the legacy API %ETHTOOL_GSET for
655 * this driver, so that they can correctly access the ethtool_cmd
656 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
657 * implements ethtool_ops::get_settings anymore.
659 static int ethtool_get_link_ksettings(struct net_device
*dev
,
660 void __user
*useraddr
)
663 struct ethtool_link_ksettings link_ksettings
;
667 if (!dev
->ethtool_ops
->get_link_ksettings
)
670 /* handle bitmap nbits handshake */
671 if (copy_from_user(&link_ksettings
.base
, useraddr
,
672 sizeof(link_ksettings
.base
)))
675 if (__ETHTOOL_LINK_MODE_MASK_NU32
676 != link_ksettings
.base
.link_mode_masks_nwords
) {
677 /* wrong link mode nbits requested */
678 memset(&link_ksettings
, 0, sizeof(link_ksettings
));
679 link_ksettings
.base
.cmd
= ETHTOOL_GLINKSETTINGS
;
680 /* send back number of words required as negative val */
681 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32
<= S8_MAX
,
682 "need too many bits for link modes!");
683 link_ksettings
.base
.link_mode_masks_nwords
684 = -((s8
)__ETHTOOL_LINK_MODE_MASK_NU32
);
686 /* copy the base fields back to user, not the link
689 if (copy_to_user(useraddr
, &link_ksettings
.base
,
690 sizeof(link_ksettings
.base
)))
696 /* handshake successful: user/kernel agree on
697 * link_mode_masks_nwords
700 memset(&link_ksettings
, 0, sizeof(link_ksettings
));
701 err
= dev
->ethtool_ops
->get_link_ksettings(dev
, &link_ksettings
);
705 /* make sure we tell the right values to user */
706 link_ksettings
.base
.cmd
= ETHTOOL_GLINKSETTINGS
;
707 link_ksettings
.base
.link_mode_masks_nwords
708 = __ETHTOOL_LINK_MODE_MASK_NU32
;
710 return store_link_ksettings_for_user(useraddr
, &link_ksettings
);
713 /* Update device ethtool_link_settings.
715 * Backward compatibility note: this function must fail when driver
716 * does not implement ethtool::set_link_ksettings, even if legacy
717 * ethtool_ops::set_settings is implemented. This tells new versions
718 * of ethtool that they should use the legacy API %ETHTOOL_SSET for
719 * this driver, so that they can correctly update the ethtool_cmd
720 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
721 * implements ethtool_ops::get_settings anymore.
723 static int ethtool_set_link_ksettings(struct net_device
*dev
,
724 void __user
*useraddr
)
727 struct ethtool_link_ksettings link_ksettings
;
731 if (!dev
->ethtool_ops
->set_link_ksettings
)
734 /* make sure nbits field has expected value */
735 if (copy_from_user(&link_ksettings
.base
, useraddr
,
736 sizeof(link_ksettings
.base
)))
739 if (__ETHTOOL_LINK_MODE_MASK_NU32
740 != link_ksettings
.base
.link_mode_masks_nwords
)
743 /* copy the whole structure, now that we know it has expected
746 err
= load_link_ksettings_from_user(&link_ksettings
, useraddr
);
750 /* re-check nwords field, just in case */
751 if (__ETHTOOL_LINK_MODE_MASK_NU32
752 != link_ksettings
.base
.link_mode_masks_nwords
)
755 return dev
->ethtool_ops
->set_link_ksettings(dev
, &link_ksettings
);
759 warn_incomplete_ethtool_legacy_settings_conversion(const char *details
)
761 char name
[sizeof(current
->comm
)];
763 pr_info_once("warning: `%s' uses legacy ethtool link settings API, %s\n",
764 get_task_comm(name
, current
), details
);
767 /* Query device for its ethtool_cmd settings.
769 * Backward compatibility note: for compatibility with legacy ethtool,
770 * this has to work with both drivers implementing get_link_ksettings
771 * API and drivers implementing get_settings API. When drivers
772 * implement get_link_ksettings and report higher link mode bits, a
773 * kernel warning is logged once (with name of 1st driver/device) to
774 * recommend user to upgrade ethtool, but the command is successful
775 * (only the lower link mode bits reported back to user).
777 static int ethtool_get_settings(struct net_device
*dev
, void __user
*useraddr
)
779 struct ethtool_cmd cmd
;
783 if (dev
->ethtool_ops
->get_link_ksettings
) {
784 /* First, use link_ksettings API if it is supported */
786 struct ethtool_link_ksettings link_ksettings
;
788 memset(&link_ksettings
, 0, sizeof(link_ksettings
));
789 err
= dev
->ethtool_ops
->get_link_ksettings(dev
,
793 if (!convert_link_ksettings_to_legacy_settings(&cmd
,
795 warn_incomplete_ethtool_legacy_settings_conversion(
796 "link modes are only partially reported");
798 /* send a sensible cmd tag back to user */
799 cmd
.cmd
= ETHTOOL_GSET
;
801 /* driver doesn't support %ethtool_link_ksettings
802 * API. revert to legacy %ethtool_cmd API, unless it's
803 * not supported either.
807 if (!dev
->ethtool_ops
->get_settings
)
810 memset(&cmd
, 0, sizeof(cmd
));
811 cmd
.cmd
= ETHTOOL_GSET
;
812 err
= dev
->ethtool_ops
->get_settings(dev
, &cmd
);
817 if (copy_to_user(useraddr
, &cmd
, sizeof(cmd
)))
823 /* Update device link settings with given ethtool_cmd.
825 * Backward compatibility note: for compatibility with legacy ethtool,
826 * this has to work with both drivers implementing set_link_ksettings
827 * API and drivers implementing set_settings API. When drivers
828 * implement set_link_ksettings and user's request updates deprecated
829 * ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
830 * warning is logged once (with name of 1st driver/device) to
831 * recommend user to upgrade ethtool, and the request is rejected.
833 static int ethtool_set_settings(struct net_device
*dev
, void __user
*useraddr
)
835 struct ethtool_cmd cmd
;
839 if (copy_from_user(&cmd
, useraddr
, sizeof(cmd
)))
842 /* first, try new %ethtool_link_ksettings API. */
843 if (dev
->ethtool_ops
->set_link_ksettings
) {
844 struct ethtool_link_ksettings link_ksettings
;
846 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings
,
850 link_ksettings
.base
.cmd
= ETHTOOL_SLINKSETTINGS
;
851 link_ksettings
.base
.link_mode_masks_nwords
852 = __ETHTOOL_LINK_MODE_MASK_NU32
;
853 return dev
->ethtool_ops
->set_link_ksettings(dev
,
857 /* legacy %ethtool_cmd API */
859 /* TODO: return -EOPNOTSUPP when ethtool_ops::get_settings
860 * disappears internally
863 if (!dev
->ethtool_ops
->set_settings
)
866 return dev
->ethtool_ops
->set_settings(dev
, &cmd
);
869 static noinline_for_stack
int ethtool_get_drvinfo(struct net_device
*dev
,
870 void __user
*useraddr
)
872 struct ethtool_drvinfo info
;
873 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
875 memset(&info
, 0, sizeof(info
));
876 info
.cmd
= ETHTOOL_GDRVINFO
;
877 if (ops
->get_drvinfo
) {
878 ops
->get_drvinfo(dev
, &info
);
879 } else if (dev
->dev
.parent
&& dev
->dev
.parent
->driver
) {
880 strlcpy(info
.bus_info
, dev_name(dev
->dev
.parent
),
881 sizeof(info
.bus_info
));
882 strlcpy(info
.driver
, dev
->dev
.parent
->driver
->name
,
883 sizeof(info
.driver
));
889 * this method of obtaining string set info is deprecated;
890 * Use ETHTOOL_GSSET_INFO instead.
892 if (ops
->get_sset_count
) {
895 rc
= ops
->get_sset_count(dev
, ETH_SS_TEST
);
897 info
.testinfo_len
= rc
;
898 rc
= ops
->get_sset_count(dev
, ETH_SS_STATS
);
901 rc
= ops
->get_sset_count(dev
, ETH_SS_PRIV_FLAGS
);
903 info
.n_priv_flags
= rc
;
905 if (ops
->get_regs_len
)
906 info
.regdump_len
= ops
->get_regs_len(dev
);
907 if (ops
->get_eeprom_len
)
908 info
.eedump_len
= ops
->get_eeprom_len(dev
);
910 if (copy_to_user(useraddr
, &info
, sizeof(info
)))
915 static noinline_for_stack
int ethtool_get_sset_info(struct net_device
*dev
,
916 void __user
*useraddr
)
918 struct ethtool_sset_info info
;
920 int i
, idx
= 0, n_bits
= 0, ret
, rc
;
921 u32
*info_buf
= NULL
;
923 if (copy_from_user(&info
, useraddr
, sizeof(info
)))
926 /* store copy of mask, because we zero struct later on */
927 sset_mask
= info
.sset_mask
;
931 /* calculate size of return buffer */
932 n_bits
= hweight64(sset_mask
);
934 memset(&info
, 0, sizeof(info
));
935 info
.cmd
= ETHTOOL_GSSET_INFO
;
937 info_buf
= kzalloc(n_bits
* sizeof(u32
), GFP_USER
);
942 * fill return buffer based on input bitmask and successful
943 * get_sset_count return
945 for (i
= 0; i
< 64; i
++) {
946 if (!(sset_mask
& (1ULL << i
)))
949 rc
= __ethtool_get_sset_count(dev
, i
);
951 info
.sset_mask
|= (1ULL << i
);
952 info_buf
[idx
++] = rc
;
957 if (copy_to_user(useraddr
, &info
, sizeof(info
)))
960 useraddr
+= offsetof(struct ethtool_sset_info
, data
);
961 if (copy_to_user(useraddr
, info_buf
, idx
* sizeof(u32
)))
971 static noinline_for_stack
int ethtool_set_rxnfc(struct net_device
*dev
,
972 u32 cmd
, void __user
*useraddr
)
974 struct ethtool_rxnfc info
;
975 size_t info_size
= sizeof(info
);
978 if (!dev
->ethtool_ops
->set_rxnfc
)
981 /* struct ethtool_rxnfc was originally defined for
982 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
983 * members. User-space might still be using that
985 if (cmd
== ETHTOOL_SRXFH
)
986 info_size
= (offsetof(struct ethtool_rxnfc
, data
) +
989 if (copy_from_user(&info
, useraddr
, info_size
))
992 rc
= dev
->ethtool_ops
->set_rxnfc(dev
, &info
);
996 if (cmd
== ETHTOOL_SRXCLSRLINS
&&
997 copy_to_user(useraddr
, &info
, info_size
))
1003 static noinline_for_stack
int ethtool_get_rxnfc(struct net_device
*dev
,
1004 u32 cmd
, void __user
*useraddr
)
1006 struct ethtool_rxnfc info
;
1007 size_t info_size
= sizeof(info
);
1008 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1010 void *rule_buf
= NULL
;
1012 if (!ops
->get_rxnfc
)
1015 /* struct ethtool_rxnfc was originally defined for
1016 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
1017 * members. User-space might still be using that
1019 if (cmd
== ETHTOOL_GRXFH
)
1020 info_size
= (offsetof(struct ethtool_rxnfc
, data
) +
1023 if (copy_from_user(&info
, useraddr
, info_size
))
1026 if (info
.cmd
== ETHTOOL_GRXCLSRLALL
) {
1027 if (info
.rule_cnt
> 0) {
1028 if (info
.rule_cnt
<= KMALLOC_MAX_SIZE
/ sizeof(u32
))
1029 rule_buf
= kzalloc(info
.rule_cnt
* sizeof(u32
),
1036 ret
= ops
->get_rxnfc(dev
, &info
, rule_buf
);
1041 if (copy_to_user(useraddr
, &info
, info_size
))
1045 useraddr
+= offsetof(struct ethtool_rxnfc
, rule_locs
);
1046 if (copy_to_user(useraddr
, rule_buf
,
1047 info
.rule_cnt
* sizeof(u32
)))
1058 static int ethtool_copy_validate_indir(u32
*indir
, void __user
*useraddr
,
1059 struct ethtool_rxnfc
*rx_rings
,
1064 if (copy_from_user(indir
, useraddr
, size
* sizeof(indir
[0])))
1067 /* Validate ring indices */
1068 for (i
= 0; i
< size
; i
++)
1069 if (indir
[i
] >= rx_rings
->data
)
1075 u8 netdev_rss_key
[NETDEV_RSS_KEY_LEN
] __read_mostly
;
1077 void netdev_rss_key_fill(void *buffer
, size_t len
)
1079 BUG_ON(len
> sizeof(netdev_rss_key
));
1080 net_get_random_once(netdev_rss_key
, sizeof(netdev_rss_key
));
1081 memcpy(buffer
, netdev_rss_key
, len
);
1083 EXPORT_SYMBOL(netdev_rss_key_fill
);
1085 static int ethtool_get_max_rxfh_channel(struct net_device
*dev
, u32
*max
)
1087 u32 dev_size
, current_max
= 0;
1091 if (!dev
->ethtool_ops
->get_rxfh_indir_size
||
1092 !dev
->ethtool_ops
->get_rxfh
)
1094 dev_size
= dev
->ethtool_ops
->get_rxfh_indir_size(dev
);
1098 indir
= kcalloc(dev_size
, sizeof(indir
[0]), GFP_USER
);
1102 ret
= dev
->ethtool_ops
->get_rxfh(dev
, indir
, NULL
, NULL
);
1107 current_max
= max(current_max
, indir
[dev_size
]);
1116 static noinline_for_stack
int ethtool_get_rxfh_indir(struct net_device
*dev
,
1117 void __user
*useraddr
)
1119 u32 user_size
, dev_size
;
1123 if (!dev
->ethtool_ops
->get_rxfh_indir_size
||
1124 !dev
->ethtool_ops
->get_rxfh
)
1126 dev_size
= dev
->ethtool_ops
->get_rxfh_indir_size(dev
);
1130 if (copy_from_user(&user_size
,
1131 useraddr
+ offsetof(struct ethtool_rxfh_indir
, size
),
1135 if (copy_to_user(useraddr
+ offsetof(struct ethtool_rxfh_indir
, size
),
1136 &dev_size
, sizeof(dev_size
)))
1139 /* If the user buffer size is 0, this is just a query for the
1140 * device table size. Otherwise, if it's smaller than the
1141 * device table size it's an error.
1143 if (user_size
< dev_size
)
1144 return user_size
== 0 ? 0 : -EINVAL
;
1146 indir
= kcalloc(dev_size
, sizeof(indir
[0]), GFP_USER
);
1150 ret
= dev
->ethtool_ops
->get_rxfh(dev
, indir
, NULL
, NULL
);
1154 if (copy_to_user(useraddr
+
1155 offsetof(struct ethtool_rxfh_indir
, ring_index
[0]),
1156 indir
, dev_size
* sizeof(indir
[0])))
1164 static noinline_for_stack
int ethtool_set_rxfh_indir(struct net_device
*dev
,
1165 void __user
*useraddr
)
1167 struct ethtool_rxnfc rx_rings
;
1168 u32 user_size
, dev_size
, i
;
1170 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1172 u32 ringidx_offset
= offsetof(struct ethtool_rxfh_indir
, ring_index
[0]);
1174 if (!ops
->get_rxfh_indir_size
|| !ops
->set_rxfh
||
1178 dev_size
= ops
->get_rxfh_indir_size(dev
);
1182 if (copy_from_user(&user_size
,
1183 useraddr
+ offsetof(struct ethtool_rxfh_indir
, size
),
1187 if (user_size
!= 0 && user_size
!= dev_size
)
1190 indir
= kcalloc(dev_size
, sizeof(indir
[0]), GFP_USER
);
1194 rx_rings
.cmd
= ETHTOOL_GRXRINGS
;
1195 ret
= ops
->get_rxnfc(dev
, &rx_rings
, NULL
);
1199 if (user_size
== 0) {
1200 for (i
= 0; i
< dev_size
; i
++)
1201 indir
[i
] = ethtool_rxfh_indir_default(i
, rx_rings
.data
);
1203 ret
= ethtool_copy_validate_indir(indir
,
1204 useraddr
+ ringidx_offset
,
1211 ret
= ops
->set_rxfh(dev
, indir
, NULL
, ETH_RSS_HASH_NO_CHANGE
);
1215 /* indicate whether rxfh was set to default */
1217 dev
->priv_flags
&= ~IFF_RXFH_CONFIGURED
;
1219 dev
->priv_flags
|= IFF_RXFH_CONFIGURED
;
1226 static noinline_for_stack
int ethtool_get_rxfh(struct net_device
*dev
,
1227 void __user
*useraddr
)
1230 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1231 u32 user_indir_size
, user_key_size
;
1232 u32 dev_indir_size
= 0, dev_key_size
= 0;
1233 struct ethtool_rxfh rxfh
;
1244 if (ops
->get_rxfh_indir_size
)
1245 dev_indir_size
= ops
->get_rxfh_indir_size(dev
);
1246 if (ops
->get_rxfh_key_size
)
1247 dev_key_size
= ops
->get_rxfh_key_size(dev
);
1249 if (copy_from_user(&rxfh
, useraddr
, sizeof(rxfh
)))
1251 user_indir_size
= rxfh
.indir_size
;
1252 user_key_size
= rxfh
.key_size
;
1254 /* Check that reserved fields are 0 for now */
1255 if (rxfh
.rss_context
|| rxfh
.rsvd8
[0] || rxfh
.rsvd8
[1] ||
1256 rxfh
.rsvd8
[2] || rxfh
.rsvd32
)
1259 rxfh
.indir_size
= dev_indir_size
;
1260 rxfh
.key_size
= dev_key_size
;
1261 if (copy_to_user(useraddr
, &rxfh
, sizeof(rxfh
)))
1264 if ((user_indir_size
&& (user_indir_size
!= dev_indir_size
)) ||
1265 (user_key_size
&& (user_key_size
!= dev_key_size
)))
1268 indir_bytes
= user_indir_size
* sizeof(indir
[0]);
1269 total_size
= indir_bytes
+ user_key_size
;
1270 rss_config
= kzalloc(total_size
, GFP_USER
);
1274 if (user_indir_size
)
1275 indir
= (u32
*)rss_config
;
1278 hkey
= rss_config
+ indir_bytes
;
1280 ret
= dev
->ethtool_ops
->get_rxfh(dev
, indir
, hkey
, &dev_hfunc
);
1284 if (copy_to_user(useraddr
+ offsetof(struct ethtool_rxfh
, hfunc
),
1285 &dev_hfunc
, sizeof(rxfh
.hfunc
))) {
1287 } else if (copy_to_user(useraddr
+
1288 offsetof(struct ethtool_rxfh
, rss_config
[0]),
1289 rss_config
, total_size
)) {
1298 static noinline_for_stack
int ethtool_set_rxfh(struct net_device
*dev
,
1299 void __user
*useraddr
)
1302 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1303 struct ethtool_rxnfc rx_rings
;
1304 struct ethtool_rxfh rxfh
;
1305 u32 dev_indir_size
= 0, dev_key_size
= 0, i
;
1306 u32
*indir
= NULL
, indir_bytes
= 0;
1309 u32 rss_cfg_offset
= offsetof(struct ethtool_rxfh
, rss_config
[0]);
1311 if (!ops
->get_rxnfc
|| !ops
->set_rxfh
)
1314 if (ops
->get_rxfh_indir_size
)
1315 dev_indir_size
= ops
->get_rxfh_indir_size(dev
);
1316 if (ops
->get_rxfh_key_size
)
1317 dev_key_size
= ops
->get_rxfh_key_size(dev
);
1319 if (copy_from_user(&rxfh
, useraddr
, sizeof(rxfh
)))
1322 /* Check that reserved fields are 0 for now */
1323 if (rxfh
.rss_context
|| rxfh
.rsvd8
[0] || rxfh
.rsvd8
[1] ||
1324 rxfh
.rsvd8
[2] || rxfh
.rsvd32
)
1327 /* If either indir, hash key or function is valid, proceed further.
1328 * Must request at least one change: indir size, hash key or function.
1330 if ((rxfh
.indir_size
&&
1331 rxfh
.indir_size
!= ETH_RXFH_INDIR_NO_CHANGE
&&
1332 rxfh
.indir_size
!= dev_indir_size
) ||
1333 (rxfh
.key_size
&& (rxfh
.key_size
!= dev_key_size
)) ||
1334 (rxfh
.indir_size
== ETH_RXFH_INDIR_NO_CHANGE
&&
1335 rxfh
.key_size
== 0 && rxfh
.hfunc
== ETH_RSS_HASH_NO_CHANGE
))
1338 if (rxfh
.indir_size
!= ETH_RXFH_INDIR_NO_CHANGE
)
1339 indir_bytes
= dev_indir_size
* sizeof(indir
[0]);
1341 rss_config
= kzalloc(indir_bytes
+ rxfh
.key_size
, GFP_USER
);
1345 rx_rings
.cmd
= ETHTOOL_GRXRINGS
;
1346 ret
= ops
->get_rxnfc(dev
, &rx_rings
, NULL
);
1350 /* rxfh.indir_size == 0 means reset the indir table to default.
1351 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
1353 if (rxfh
.indir_size
&&
1354 rxfh
.indir_size
!= ETH_RXFH_INDIR_NO_CHANGE
) {
1355 indir
= (u32
*)rss_config
;
1356 ret
= ethtool_copy_validate_indir(indir
,
1357 useraddr
+ rss_cfg_offset
,
1362 } else if (rxfh
.indir_size
== 0) {
1363 indir
= (u32
*)rss_config
;
1364 for (i
= 0; i
< dev_indir_size
; i
++)
1365 indir
[i
] = ethtool_rxfh_indir_default(i
, rx_rings
.data
);
1368 if (rxfh
.key_size
) {
1369 hkey
= rss_config
+ indir_bytes
;
1370 if (copy_from_user(hkey
,
1371 useraddr
+ rss_cfg_offset
+ indir_bytes
,
1378 ret
= ops
->set_rxfh(dev
, indir
, hkey
, rxfh
.hfunc
);
1382 /* indicate whether rxfh was set to default */
1383 if (rxfh
.indir_size
== 0)
1384 dev
->priv_flags
&= ~IFF_RXFH_CONFIGURED
;
1385 else if (rxfh
.indir_size
!= ETH_RXFH_INDIR_NO_CHANGE
)
1386 dev
->priv_flags
|= IFF_RXFH_CONFIGURED
;
1393 static int ethtool_get_regs(struct net_device
*dev
, char __user
*useraddr
)
1395 struct ethtool_regs regs
;
1396 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1400 if (!ops
->get_regs
|| !ops
->get_regs_len
)
1403 if (copy_from_user(®s
, useraddr
, sizeof(regs
)))
1406 reglen
= ops
->get_regs_len(dev
);
1407 if (regs
.len
> reglen
)
1412 regbuf
= vzalloc(reglen
);
1417 ops
->get_regs(dev
, ®s
, regbuf
);
1420 if (copy_to_user(useraddr
, ®s
, sizeof(regs
)))
1422 useraddr
+= offsetof(struct ethtool_regs
, data
);
1423 if (regbuf
&& copy_to_user(useraddr
, regbuf
, regs
.len
))
1432 static int ethtool_reset(struct net_device
*dev
, char __user
*useraddr
)
1434 struct ethtool_value reset
;
1437 if (!dev
->ethtool_ops
->reset
)
1440 if (copy_from_user(&reset
, useraddr
, sizeof(reset
)))
1443 ret
= dev
->ethtool_ops
->reset(dev
, &reset
.data
);
1447 if (copy_to_user(useraddr
, &reset
, sizeof(reset
)))
1452 static int ethtool_get_wol(struct net_device
*dev
, char __user
*useraddr
)
1454 struct ethtool_wolinfo wol
= { .cmd
= ETHTOOL_GWOL
};
1456 if (!dev
->ethtool_ops
->get_wol
)
1459 dev
->ethtool_ops
->get_wol(dev
, &wol
);
1461 if (copy_to_user(useraddr
, &wol
, sizeof(wol
)))
1466 static int ethtool_set_wol(struct net_device
*dev
, char __user
*useraddr
)
1468 struct ethtool_wolinfo wol
;
1470 if (!dev
->ethtool_ops
->set_wol
)
1473 if (copy_from_user(&wol
, useraddr
, sizeof(wol
)))
1476 return dev
->ethtool_ops
->set_wol(dev
, &wol
);
1479 static int ethtool_get_eee(struct net_device
*dev
, char __user
*useraddr
)
1481 struct ethtool_eee edata
;
1484 if (!dev
->ethtool_ops
->get_eee
)
1487 memset(&edata
, 0, sizeof(struct ethtool_eee
));
1488 edata
.cmd
= ETHTOOL_GEEE
;
1489 rc
= dev
->ethtool_ops
->get_eee(dev
, &edata
);
1494 if (copy_to_user(useraddr
, &edata
, sizeof(edata
)))
1500 static int ethtool_set_eee(struct net_device
*dev
, char __user
*useraddr
)
1502 struct ethtool_eee edata
;
1504 if (!dev
->ethtool_ops
->set_eee
)
1507 if (copy_from_user(&edata
, useraddr
, sizeof(edata
)))
1510 return dev
->ethtool_ops
->set_eee(dev
, &edata
);
1513 static int ethtool_nway_reset(struct net_device
*dev
)
1515 if (!dev
->ethtool_ops
->nway_reset
)
1518 return dev
->ethtool_ops
->nway_reset(dev
);
1521 static int ethtool_get_link(struct net_device
*dev
, char __user
*useraddr
)
1523 struct ethtool_value edata
= { .cmd
= ETHTOOL_GLINK
};
1525 if (!dev
->ethtool_ops
->get_link
)
1528 edata
.data
= netif_running(dev
) && dev
->ethtool_ops
->get_link(dev
);
1530 if (copy_to_user(useraddr
, &edata
, sizeof(edata
)))
1535 static int ethtool_get_any_eeprom(struct net_device
*dev
, void __user
*useraddr
,
1536 int (*getter
)(struct net_device
*,
1537 struct ethtool_eeprom
*, u8
*),
1540 struct ethtool_eeprom eeprom
;
1541 void __user
*userbuf
= useraddr
+ sizeof(eeprom
);
1542 u32 bytes_remaining
;
1546 if (copy_from_user(&eeprom
, useraddr
, sizeof(eeprom
)))
1549 /* Check for wrap and zero */
1550 if (eeprom
.offset
+ eeprom
.len
<= eeprom
.offset
)
1553 /* Check for exceeding total eeprom len */
1554 if (eeprom
.offset
+ eeprom
.len
> total_len
)
1557 data
= kmalloc(PAGE_SIZE
, GFP_USER
);
1561 bytes_remaining
= eeprom
.len
;
1562 while (bytes_remaining
> 0) {
1563 eeprom
.len
= min(bytes_remaining
, (u32
)PAGE_SIZE
);
1565 ret
= getter(dev
, &eeprom
, data
);
1568 if (copy_to_user(userbuf
, data
, eeprom
.len
)) {
1572 userbuf
+= eeprom
.len
;
1573 eeprom
.offset
+= eeprom
.len
;
1574 bytes_remaining
-= eeprom
.len
;
1577 eeprom
.len
= userbuf
- (useraddr
+ sizeof(eeprom
));
1578 eeprom
.offset
-= eeprom
.len
;
1579 if (copy_to_user(useraddr
, &eeprom
, sizeof(eeprom
)))
1586 static int ethtool_get_eeprom(struct net_device
*dev
, void __user
*useraddr
)
1588 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1590 if (!ops
->get_eeprom
|| !ops
->get_eeprom_len
||
1591 !ops
->get_eeprom_len(dev
))
1594 return ethtool_get_any_eeprom(dev
, useraddr
, ops
->get_eeprom
,
1595 ops
->get_eeprom_len(dev
));
1598 static int ethtool_set_eeprom(struct net_device
*dev
, void __user
*useraddr
)
1600 struct ethtool_eeprom eeprom
;
1601 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1602 void __user
*userbuf
= useraddr
+ sizeof(eeprom
);
1603 u32 bytes_remaining
;
1607 if (!ops
->set_eeprom
|| !ops
->get_eeprom_len
||
1608 !ops
->get_eeprom_len(dev
))
1611 if (copy_from_user(&eeprom
, useraddr
, sizeof(eeprom
)))
1614 /* Check for wrap and zero */
1615 if (eeprom
.offset
+ eeprom
.len
<= eeprom
.offset
)
1618 /* Check for exceeding total eeprom len */
1619 if (eeprom
.offset
+ eeprom
.len
> ops
->get_eeprom_len(dev
))
1622 data
= kmalloc(PAGE_SIZE
, GFP_USER
);
1626 bytes_remaining
= eeprom
.len
;
1627 while (bytes_remaining
> 0) {
1628 eeprom
.len
= min(bytes_remaining
, (u32
)PAGE_SIZE
);
1630 if (copy_from_user(data
, userbuf
, eeprom
.len
)) {
1634 ret
= ops
->set_eeprom(dev
, &eeprom
, data
);
1637 userbuf
+= eeprom
.len
;
1638 eeprom
.offset
+= eeprom
.len
;
1639 bytes_remaining
-= eeprom
.len
;
1646 static noinline_for_stack
int ethtool_get_coalesce(struct net_device
*dev
,
1647 void __user
*useraddr
)
1649 struct ethtool_coalesce coalesce
= { .cmd
= ETHTOOL_GCOALESCE
};
1651 if (!dev
->ethtool_ops
->get_coalesce
)
1654 dev
->ethtool_ops
->get_coalesce(dev
, &coalesce
);
1656 if (copy_to_user(useraddr
, &coalesce
, sizeof(coalesce
)))
1661 static noinline_for_stack
int ethtool_set_coalesce(struct net_device
*dev
,
1662 void __user
*useraddr
)
1664 struct ethtool_coalesce coalesce
;
1666 if (!dev
->ethtool_ops
->set_coalesce
)
1669 if (copy_from_user(&coalesce
, useraddr
, sizeof(coalesce
)))
1672 return dev
->ethtool_ops
->set_coalesce(dev
, &coalesce
);
1675 static int ethtool_get_ringparam(struct net_device
*dev
, void __user
*useraddr
)
1677 struct ethtool_ringparam ringparam
= { .cmd
= ETHTOOL_GRINGPARAM
};
1679 if (!dev
->ethtool_ops
->get_ringparam
)
1682 dev
->ethtool_ops
->get_ringparam(dev
, &ringparam
);
1684 if (copy_to_user(useraddr
, &ringparam
, sizeof(ringparam
)))
1689 static int ethtool_set_ringparam(struct net_device
*dev
, void __user
*useraddr
)
1691 struct ethtool_ringparam ringparam
;
1693 if (!dev
->ethtool_ops
->set_ringparam
)
1696 if (copy_from_user(&ringparam
, useraddr
, sizeof(ringparam
)))
1699 return dev
->ethtool_ops
->set_ringparam(dev
, &ringparam
);
1702 static noinline_for_stack
int ethtool_get_channels(struct net_device
*dev
,
1703 void __user
*useraddr
)
1705 struct ethtool_channels channels
= { .cmd
= ETHTOOL_GCHANNELS
};
1707 if (!dev
->ethtool_ops
->get_channels
)
1710 dev
->ethtool_ops
->get_channels(dev
, &channels
);
1712 if (copy_to_user(useraddr
, &channels
, sizeof(channels
)))
1717 static noinline_for_stack
int ethtool_set_channels(struct net_device
*dev
,
1718 void __user
*useraddr
)
1720 struct ethtool_channels channels
, max
= { .cmd
= ETHTOOL_GCHANNELS
};
1721 u32 max_rx_in_use
= 0;
1723 if (!dev
->ethtool_ops
->set_channels
|| !dev
->ethtool_ops
->get_channels
)
1726 if (copy_from_user(&channels
, useraddr
, sizeof(channels
)))
1729 dev
->ethtool_ops
->get_channels(dev
, &max
);
1731 /* ensure new counts are within the maximums */
1732 if ((channels
.rx_count
> max
.max_rx
) ||
1733 (channels
.tx_count
> max
.max_tx
) ||
1734 (channels
.combined_count
> max
.max_combined
) ||
1735 (channels
.other_count
> max
.max_other
))
1738 /* ensure the new Rx count fits within the configured Rx flow
1739 * indirection table settings */
1740 if (netif_is_rxfh_configured(dev
) &&
1741 !ethtool_get_max_rxfh_channel(dev
, &max_rx_in_use
) &&
1742 (channels
.combined_count
+ channels
.rx_count
) <= max_rx_in_use
)
1745 return dev
->ethtool_ops
->set_channels(dev
, &channels
);
1748 static int ethtool_get_pauseparam(struct net_device
*dev
, void __user
*useraddr
)
1750 struct ethtool_pauseparam pauseparam
= { ETHTOOL_GPAUSEPARAM
};
1752 if (!dev
->ethtool_ops
->get_pauseparam
)
1755 dev
->ethtool_ops
->get_pauseparam(dev
, &pauseparam
);
1757 if (copy_to_user(useraddr
, &pauseparam
, sizeof(pauseparam
)))
1762 static int ethtool_set_pauseparam(struct net_device
*dev
, void __user
*useraddr
)
1764 struct ethtool_pauseparam pauseparam
;
1766 if (!dev
->ethtool_ops
->set_pauseparam
)
1769 if (copy_from_user(&pauseparam
, useraddr
, sizeof(pauseparam
)))
1772 return dev
->ethtool_ops
->set_pauseparam(dev
, &pauseparam
);
1775 static int ethtool_self_test(struct net_device
*dev
, char __user
*useraddr
)
1777 struct ethtool_test test
;
1778 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1782 if (!ops
->self_test
|| !ops
->get_sset_count
)
1785 test_len
= ops
->get_sset_count(dev
, ETH_SS_TEST
);
1788 WARN_ON(test_len
== 0);
1790 if (copy_from_user(&test
, useraddr
, sizeof(test
)))
1793 test
.len
= test_len
;
1794 data
= kmalloc(test_len
* sizeof(u64
), GFP_USER
);
1798 ops
->self_test(dev
, &test
, data
);
1801 if (copy_to_user(useraddr
, &test
, sizeof(test
)))
1803 useraddr
+= sizeof(test
);
1804 if (copy_to_user(useraddr
, data
, test
.len
* sizeof(u64
)))
1813 static int ethtool_get_strings(struct net_device
*dev
, void __user
*useraddr
)
1815 struct ethtool_gstrings gstrings
;
1819 if (copy_from_user(&gstrings
, useraddr
, sizeof(gstrings
)))
1822 ret
= __ethtool_get_sset_count(dev
, gstrings
.string_set
);
1825 if (ret
> S32_MAX
/ ETH_GSTRING_LEN
)
1830 data
= vzalloc(gstrings
.len
* ETH_GSTRING_LEN
);
1831 if (gstrings
.len
&& !data
)
1834 __ethtool_get_strings(dev
, gstrings
.string_set
, data
);
1837 if (copy_to_user(useraddr
, &gstrings
, sizeof(gstrings
)))
1839 useraddr
+= sizeof(gstrings
);
1841 copy_to_user(useraddr
, data
, gstrings
.len
* ETH_GSTRING_LEN
))
1850 static int ethtool_phys_id(struct net_device
*dev
, void __user
*useraddr
)
1852 struct ethtool_value id
;
1854 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1857 if (!ops
->set_phys_id
)
1863 if (copy_from_user(&id
, useraddr
, sizeof(id
)))
1866 rc
= ops
->set_phys_id(dev
, ETHTOOL_ID_ACTIVE
);
1870 /* Drop the RTNL lock while waiting, but prevent reentry or
1871 * removal of the device.
1878 /* Driver will handle this itself */
1879 schedule_timeout_interruptible(
1880 id
.data
? (id
.data
* HZ
) : MAX_SCHEDULE_TIMEOUT
);
1882 /* Driver expects to be called at twice the frequency in rc */
1883 int n
= rc
* 2, i
, interval
= HZ
/ n
;
1885 /* Count down seconds */
1887 /* Count down iterations per second */
1891 rc
= ops
->set_phys_id(dev
,
1892 (i
& 1) ? ETHTOOL_ID_OFF
: ETHTOOL_ID_ON
);
1896 schedule_timeout_interruptible(interval
);
1897 } while (!signal_pending(current
) && --i
!= 0);
1898 } while (!signal_pending(current
) &&
1899 (id
.data
== 0 || --id
.data
!= 0));
1906 (void) ops
->set_phys_id(dev
, ETHTOOL_ID_INACTIVE
);
1910 static int ethtool_get_stats(struct net_device
*dev
, void __user
*useraddr
)
1912 struct ethtool_stats stats
;
1913 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1917 if (!ops
->get_ethtool_stats
|| !ops
->get_sset_count
)
1920 n_stats
= ops
->get_sset_count(dev
, ETH_SS_STATS
);
1923 if (n_stats
> S32_MAX
/ sizeof(u64
))
1925 WARN_ON_ONCE(!n_stats
);
1926 if (copy_from_user(&stats
, useraddr
, sizeof(stats
)))
1929 stats
.n_stats
= n_stats
;
1930 data
= vzalloc(n_stats
* sizeof(u64
));
1931 if (n_stats
&& !data
)
1934 ops
->get_ethtool_stats(dev
, &stats
, data
);
1937 if (copy_to_user(useraddr
, &stats
, sizeof(stats
)))
1939 useraddr
+= sizeof(stats
);
1940 if (n_stats
&& copy_to_user(useraddr
, data
, n_stats
* sizeof(u64
)))
1949 static int ethtool_get_phy_stats(struct net_device
*dev
, void __user
*useraddr
)
1951 struct ethtool_stats stats
;
1952 struct phy_device
*phydev
= dev
->phydev
;
1959 n_stats
= phy_get_sset_count(phydev
);
1962 if (n_stats
> S32_MAX
/ sizeof(u64
))
1964 WARN_ON_ONCE(!n_stats
);
1966 if (copy_from_user(&stats
, useraddr
, sizeof(stats
)))
1969 stats
.n_stats
= n_stats
;
1970 data
= vzalloc(n_stats
* sizeof(u64
));
1971 if (n_stats
&& !data
)
1974 mutex_lock(&phydev
->lock
);
1975 phydev
->drv
->get_stats(phydev
, &stats
, data
);
1976 mutex_unlock(&phydev
->lock
);
1979 if (copy_to_user(useraddr
, &stats
, sizeof(stats
)))
1981 useraddr
+= sizeof(stats
);
1982 if (n_stats
&& copy_to_user(useraddr
, data
, n_stats
* sizeof(u64
)))
1991 static int ethtool_get_perm_addr(struct net_device
*dev
, void __user
*useraddr
)
1993 struct ethtool_perm_addr epaddr
;
1995 if (copy_from_user(&epaddr
, useraddr
, sizeof(epaddr
)))
1998 if (epaddr
.size
< dev
->addr_len
)
2000 epaddr
.size
= dev
->addr_len
;
2002 if (copy_to_user(useraddr
, &epaddr
, sizeof(epaddr
)))
2004 useraddr
+= sizeof(epaddr
);
2005 if (copy_to_user(useraddr
, dev
->perm_addr
, epaddr
.size
))
2010 static int ethtool_get_value(struct net_device
*dev
, char __user
*useraddr
,
2011 u32 cmd
, u32 (*actor
)(struct net_device
*))
2013 struct ethtool_value edata
= { .cmd
= cmd
};
2018 edata
.data
= actor(dev
);
2020 if (copy_to_user(useraddr
, &edata
, sizeof(edata
)))
2025 static int ethtool_set_value_void(struct net_device
*dev
, char __user
*useraddr
,
2026 void (*actor
)(struct net_device
*, u32
))
2028 struct ethtool_value edata
;
2033 if (copy_from_user(&edata
, useraddr
, sizeof(edata
)))
2036 actor(dev
, edata
.data
);
2040 static int ethtool_set_value(struct net_device
*dev
, char __user
*useraddr
,
2041 int (*actor
)(struct net_device
*, u32
))
2043 struct ethtool_value edata
;
2048 if (copy_from_user(&edata
, useraddr
, sizeof(edata
)))
2051 return actor(dev
, edata
.data
);
2054 static noinline_for_stack
int ethtool_flash_device(struct net_device
*dev
,
2055 char __user
*useraddr
)
2057 struct ethtool_flash efl
;
2059 if (copy_from_user(&efl
, useraddr
, sizeof(efl
)))
2062 if (!dev
->ethtool_ops
->flash_device
)
2065 efl
.data
[ETHTOOL_FLASH_MAX_FILENAME
- 1] = 0;
2067 return dev
->ethtool_ops
->flash_device(dev
, &efl
);
2070 static int ethtool_set_dump(struct net_device
*dev
,
2071 void __user
*useraddr
)
2073 struct ethtool_dump dump
;
2075 if (!dev
->ethtool_ops
->set_dump
)
2078 if (copy_from_user(&dump
, useraddr
, sizeof(dump
)))
2081 return dev
->ethtool_ops
->set_dump(dev
, &dump
);
2084 static int ethtool_get_dump_flag(struct net_device
*dev
,
2085 void __user
*useraddr
)
2088 struct ethtool_dump dump
;
2089 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2091 if (!ops
->get_dump_flag
)
2094 if (copy_from_user(&dump
, useraddr
, sizeof(dump
)))
2097 ret
= ops
->get_dump_flag(dev
, &dump
);
2101 if (copy_to_user(useraddr
, &dump
, sizeof(dump
)))
2106 static int ethtool_get_dump_data(struct net_device
*dev
,
2107 void __user
*useraddr
)
2111 struct ethtool_dump dump
, tmp
;
2112 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2115 if (!ops
->get_dump_data
|| !ops
->get_dump_flag
)
2118 if (copy_from_user(&dump
, useraddr
, sizeof(dump
)))
2121 memset(&tmp
, 0, sizeof(tmp
));
2122 tmp
.cmd
= ETHTOOL_GET_DUMP_FLAG
;
2123 ret
= ops
->get_dump_flag(dev
, &tmp
);
2127 len
= min(tmp
.len
, dump
.len
);
2131 /* Don't ever let the driver think there's more space available
2132 * than it requested with .get_dump_flag().
2136 /* Always allocate enough space to hold the whole thing so that the
2137 * driver does not need to check the length and bother with partial
2140 data
= vzalloc(tmp
.len
);
2143 ret
= ops
->get_dump_data(dev
, &dump
, data
);
2147 /* There are two sane possibilities:
2148 * 1. The driver's .get_dump_data() does not touch dump.len.
2149 * 2. Or it may set dump.len to how much it really writes, which
2150 * should be tmp.len (or len if it can do a partial dump).
2151 * In any case respond to userspace with the actual length of data
2154 WARN_ON(dump
.len
!= len
&& dump
.len
!= tmp
.len
);
2157 if (copy_to_user(useraddr
, &dump
, sizeof(dump
))) {
2161 useraddr
+= offsetof(struct ethtool_dump
, data
);
2162 if (copy_to_user(useraddr
, data
, len
))
2169 static int ethtool_get_ts_info(struct net_device
*dev
, void __user
*useraddr
)
2172 struct ethtool_ts_info info
;
2173 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2174 struct phy_device
*phydev
= dev
->phydev
;
2176 memset(&info
, 0, sizeof(info
));
2177 info
.cmd
= ETHTOOL_GET_TS_INFO
;
2179 if (phydev
&& phydev
->drv
&& phydev
->drv
->ts_info
) {
2180 err
= phydev
->drv
->ts_info(phydev
, &info
);
2181 } else if (ops
->get_ts_info
) {
2182 err
= ops
->get_ts_info(dev
, &info
);
2184 info
.so_timestamping
=
2185 SOF_TIMESTAMPING_RX_SOFTWARE
|
2186 SOF_TIMESTAMPING_SOFTWARE
;
2187 info
.phc_index
= -1;
2193 if (copy_to_user(useraddr
, &info
, sizeof(info
)))
2199 static int __ethtool_get_module_info(struct net_device
*dev
,
2200 struct ethtool_modinfo
*modinfo
)
2202 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2203 struct phy_device
*phydev
= dev
->phydev
;
2205 if (phydev
&& phydev
->drv
&& phydev
->drv
->module_info
)
2206 return phydev
->drv
->module_info(phydev
, modinfo
);
2208 if (ops
->get_module_info
)
2209 return ops
->get_module_info(dev
, modinfo
);
2214 static int ethtool_get_module_info(struct net_device
*dev
,
2215 void __user
*useraddr
)
2218 struct ethtool_modinfo modinfo
;
2220 if (copy_from_user(&modinfo
, useraddr
, sizeof(modinfo
)))
2223 ret
= __ethtool_get_module_info(dev
, &modinfo
);
2227 if (copy_to_user(useraddr
, &modinfo
, sizeof(modinfo
)))
2233 static int __ethtool_get_module_eeprom(struct net_device
*dev
,
2234 struct ethtool_eeprom
*ee
, u8
*data
)
2236 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2237 struct phy_device
*phydev
= dev
->phydev
;
2239 if (phydev
&& phydev
->drv
&& phydev
->drv
->module_eeprom
)
2240 return phydev
->drv
->module_eeprom(phydev
, ee
, data
);
2242 if (ops
->get_module_eeprom
)
2243 return ops
->get_module_eeprom(dev
, ee
, data
);
2248 static int ethtool_get_module_eeprom(struct net_device
*dev
,
2249 void __user
*useraddr
)
2252 struct ethtool_modinfo modinfo
;
2254 ret
= __ethtool_get_module_info(dev
, &modinfo
);
2258 return ethtool_get_any_eeprom(dev
, useraddr
,
2259 __ethtool_get_module_eeprom
,
2260 modinfo
.eeprom_len
);
2263 static int ethtool_tunable_valid(const struct ethtool_tunable
*tuna
)
2266 case ETHTOOL_RX_COPYBREAK
:
2267 case ETHTOOL_TX_COPYBREAK
:
2268 if (tuna
->len
!= sizeof(u32
) ||
2269 tuna
->type_id
!= ETHTOOL_TUNABLE_U32
)
2279 static int ethtool_get_tunable(struct net_device
*dev
, void __user
*useraddr
)
2282 struct ethtool_tunable tuna
;
2283 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2286 if (!ops
->get_tunable
)
2288 if (copy_from_user(&tuna
, useraddr
, sizeof(tuna
)))
2290 ret
= ethtool_tunable_valid(&tuna
);
2293 data
= kmalloc(tuna
.len
, GFP_USER
);
2296 ret
= ops
->get_tunable(dev
, &tuna
, data
);
2299 useraddr
+= sizeof(tuna
);
2301 if (copy_to_user(useraddr
, data
, tuna
.len
))
2310 static int ethtool_set_tunable(struct net_device
*dev
, void __user
*useraddr
)
2313 struct ethtool_tunable tuna
;
2314 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2317 if (!ops
->set_tunable
)
2319 if (copy_from_user(&tuna
, useraddr
, sizeof(tuna
)))
2321 ret
= ethtool_tunable_valid(&tuna
);
2324 useraddr
+= sizeof(tuna
);
2325 data
= memdup_user(useraddr
, tuna
.len
);
2327 return PTR_ERR(data
);
2328 ret
= ops
->set_tunable(dev
, &tuna
, data
);
2334 static int ethtool_get_per_queue_coalesce(struct net_device
*dev
,
2335 void __user
*useraddr
,
2336 struct ethtool_per_queue_op
*per_queue_opt
)
2340 DECLARE_BITMAP(queue_mask
, MAX_NUM_QUEUE
);
2342 if (!dev
->ethtool_ops
->get_per_queue_coalesce
)
2345 useraddr
+= sizeof(*per_queue_opt
);
2347 bitmap_from_u32array(queue_mask
,
2349 per_queue_opt
->queue_mask
,
2350 DIV_ROUND_UP(MAX_NUM_QUEUE
, 32));
2352 for_each_set_bit(bit
, queue_mask
, MAX_NUM_QUEUE
) {
2353 struct ethtool_coalesce coalesce
= { .cmd
= ETHTOOL_GCOALESCE
};
2355 ret
= dev
->ethtool_ops
->get_per_queue_coalesce(dev
, bit
, &coalesce
);
2358 if (copy_to_user(useraddr
, &coalesce
, sizeof(coalesce
)))
2360 useraddr
+= sizeof(coalesce
);
2366 static int ethtool_set_per_queue_coalesce(struct net_device
*dev
,
2367 void __user
*useraddr
,
2368 struct ethtool_per_queue_op
*per_queue_opt
)
2373 struct ethtool_coalesce
*backup
= NULL
, *tmp
= NULL
;
2374 DECLARE_BITMAP(queue_mask
, MAX_NUM_QUEUE
);
2376 if ((!dev
->ethtool_ops
->set_per_queue_coalesce
) ||
2377 (!dev
->ethtool_ops
->get_per_queue_coalesce
))
2380 useraddr
+= sizeof(*per_queue_opt
);
2382 bitmap_from_u32array(queue_mask
,
2384 per_queue_opt
->queue_mask
,
2385 DIV_ROUND_UP(MAX_NUM_QUEUE
, 32));
2386 n_queue
= bitmap_weight(queue_mask
, MAX_NUM_QUEUE
);
2387 tmp
= backup
= kmalloc_array(n_queue
, sizeof(*backup
), GFP_KERNEL
);
2391 for_each_set_bit(bit
, queue_mask
, MAX_NUM_QUEUE
) {
2392 struct ethtool_coalesce coalesce
;
2394 ret
= dev
->ethtool_ops
->get_per_queue_coalesce(dev
, bit
, tmp
);
2400 if (copy_from_user(&coalesce
, useraddr
, sizeof(coalesce
))) {
2405 ret
= dev
->ethtool_ops
->set_per_queue_coalesce(dev
, bit
, &coalesce
);
2409 useraddr
+= sizeof(coalesce
);
2415 for_each_set_bit(i
, queue_mask
, bit
) {
2416 dev
->ethtool_ops
->set_per_queue_coalesce(dev
, i
, tmp
);
2425 static int ethtool_set_per_queue(struct net_device
*dev
, void __user
*useraddr
)
2427 struct ethtool_per_queue_op per_queue_opt
;
2429 if (copy_from_user(&per_queue_opt
, useraddr
, sizeof(per_queue_opt
)))
2432 switch (per_queue_opt
.sub_command
) {
2433 case ETHTOOL_GCOALESCE
:
2434 return ethtool_get_per_queue_coalesce(dev
, useraddr
, &per_queue_opt
);
2435 case ETHTOOL_SCOALESCE
:
2436 return ethtool_set_per_queue_coalesce(dev
, useraddr
, &per_queue_opt
);
2442 static int ethtool_phy_tunable_valid(const struct ethtool_tunable
*tuna
)
2445 case ETHTOOL_PHY_DOWNSHIFT
:
2446 if (tuna
->len
!= sizeof(u8
) ||
2447 tuna
->type_id
!= ETHTOOL_TUNABLE_U8
)
2457 static int get_phy_tunable(struct net_device
*dev
, void __user
*useraddr
)
2460 struct ethtool_tunable tuna
;
2461 struct phy_device
*phydev
= dev
->phydev
;
2464 if (!(phydev
&& phydev
->drv
&& phydev
->drv
->get_tunable
))
2467 if (copy_from_user(&tuna
, useraddr
, sizeof(tuna
)))
2469 ret
= ethtool_phy_tunable_valid(&tuna
);
2472 data
= kmalloc(tuna
.len
, GFP_USER
);
2475 mutex_lock(&phydev
->lock
);
2476 ret
= phydev
->drv
->get_tunable(phydev
, &tuna
, data
);
2477 mutex_unlock(&phydev
->lock
);
2480 useraddr
+= sizeof(tuna
);
2482 if (copy_to_user(useraddr
, data
, tuna
.len
))
2491 static int set_phy_tunable(struct net_device
*dev
, void __user
*useraddr
)
2494 struct ethtool_tunable tuna
;
2495 struct phy_device
*phydev
= dev
->phydev
;
2498 if (!(phydev
&& phydev
->drv
&& phydev
->drv
->set_tunable
))
2500 if (copy_from_user(&tuna
, useraddr
, sizeof(tuna
)))
2502 ret
= ethtool_phy_tunable_valid(&tuna
);
2505 useraddr
+= sizeof(tuna
);
2506 data
= memdup_user(useraddr
, tuna
.len
);
2508 return PTR_ERR(data
);
2509 mutex_lock(&phydev
->lock
);
2510 ret
= phydev
->drv
->set_tunable(phydev
, &tuna
, data
);
2511 mutex_unlock(&phydev
->lock
);
2517 static int ethtool_get_fecparam(struct net_device
*dev
, void __user
*useraddr
)
2519 struct ethtool_fecparam fecparam
= { ETHTOOL_GFECPARAM
};
2521 if (!dev
->ethtool_ops
->get_fecparam
)
2524 dev
->ethtool_ops
->get_fecparam(dev
, &fecparam
);
2526 if (copy_to_user(useraddr
, &fecparam
, sizeof(fecparam
)))
2531 static int ethtool_set_fecparam(struct net_device
*dev
, void __user
*useraddr
)
2533 struct ethtool_fecparam fecparam
;
2535 if (!dev
->ethtool_ops
->set_fecparam
)
2538 if (copy_from_user(&fecparam
, useraddr
, sizeof(fecparam
)))
2541 return dev
->ethtool_ops
->set_fecparam(dev
, &fecparam
);
2544 /* The main entry point in this file. Called from net/core/dev_ioctl.c */
2546 int dev_ethtool(struct net
*net
, struct ifreq
*ifr
)
2548 struct net_device
*dev
= __dev_get_by_name(net
, ifr
->ifr_name
);
2549 void __user
*useraddr
= ifr
->ifr_data
;
2550 u32 ethcmd
, sub_cmd
;
2552 netdev_features_t old_features
;
2554 if (!dev
|| !netif_device_present(dev
))
2557 if (copy_from_user(ðcmd
, useraddr
, sizeof(ethcmd
)))
2560 if (ethcmd
== ETHTOOL_PERQUEUE
) {
2561 if (copy_from_user(&sub_cmd
, useraddr
+ sizeof(ethcmd
), sizeof(sub_cmd
)))
2566 /* Allow some commands to be done by anyone */
2569 case ETHTOOL_GDRVINFO
:
2570 case ETHTOOL_GMSGLVL
:
2572 case ETHTOOL_GCOALESCE
:
2573 case ETHTOOL_GRINGPARAM
:
2574 case ETHTOOL_GPAUSEPARAM
:
2575 case ETHTOOL_GRXCSUM
:
2576 case ETHTOOL_GTXCSUM
:
2578 case ETHTOOL_GSSET_INFO
:
2579 case ETHTOOL_GSTRINGS
:
2580 case ETHTOOL_GSTATS
:
2581 case ETHTOOL_GPHYSTATS
:
2583 case ETHTOOL_GPERMADDR
:
2586 case ETHTOOL_GFLAGS
:
2587 case ETHTOOL_GPFLAGS
:
2589 case ETHTOOL_GRXRINGS
:
2590 case ETHTOOL_GRXCLSRLCNT
:
2591 case ETHTOOL_GRXCLSRULE
:
2592 case ETHTOOL_GRXCLSRLALL
:
2593 case ETHTOOL_GRXFHINDIR
:
2595 case ETHTOOL_GFEATURES
:
2596 case ETHTOOL_GCHANNELS
:
2597 case ETHTOOL_GET_TS_INFO
:
2599 case ETHTOOL_GTUNABLE
:
2600 case ETHTOOL_PHY_GTUNABLE
:
2601 case ETHTOOL_GLINKSETTINGS
:
2602 case ETHTOOL_GFECPARAM
:
2605 if (!ns_capable(net
->user_ns
, CAP_NET_ADMIN
))
2609 if (dev
->ethtool_ops
->begin
) {
2610 rc
= dev
->ethtool_ops
->begin(dev
);
2614 old_features
= dev
->features
;
2618 rc
= ethtool_get_settings(dev
, useraddr
);
2621 rc
= ethtool_set_settings(dev
, useraddr
);
2623 case ETHTOOL_GDRVINFO
:
2624 rc
= ethtool_get_drvinfo(dev
, useraddr
);
2627 rc
= ethtool_get_regs(dev
, useraddr
);
2630 rc
= ethtool_get_wol(dev
, useraddr
);
2633 rc
= ethtool_set_wol(dev
, useraddr
);
2635 case ETHTOOL_GMSGLVL
:
2636 rc
= ethtool_get_value(dev
, useraddr
, ethcmd
,
2637 dev
->ethtool_ops
->get_msglevel
);
2639 case ETHTOOL_SMSGLVL
:
2640 rc
= ethtool_set_value_void(dev
, useraddr
,
2641 dev
->ethtool_ops
->set_msglevel
);
2644 rc
= ethtool_get_eee(dev
, useraddr
);
2647 rc
= ethtool_set_eee(dev
, useraddr
);
2649 case ETHTOOL_NWAY_RST
:
2650 rc
= ethtool_nway_reset(dev
);
2653 rc
= ethtool_get_link(dev
, useraddr
);
2655 case ETHTOOL_GEEPROM
:
2656 rc
= ethtool_get_eeprom(dev
, useraddr
);
2658 case ETHTOOL_SEEPROM
:
2659 rc
= ethtool_set_eeprom(dev
, useraddr
);
2661 case ETHTOOL_GCOALESCE
:
2662 rc
= ethtool_get_coalesce(dev
, useraddr
);
2664 case ETHTOOL_SCOALESCE
:
2665 rc
= ethtool_set_coalesce(dev
, useraddr
);
2667 case ETHTOOL_GRINGPARAM
:
2668 rc
= ethtool_get_ringparam(dev
, useraddr
);
2670 case ETHTOOL_SRINGPARAM
:
2671 rc
= ethtool_set_ringparam(dev
, useraddr
);
2673 case ETHTOOL_GPAUSEPARAM
:
2674 rc
= ethtool_get_pauseparam(dev
, useraddr
);
2676 case ETHTOOL_SPAUSEPARAM
:
2677 rc
= ethtool_set_pauseparam(dev
, useraddr
);
2680 rc
= ethtool_self_test(dev
, useraddr
);
2682 case ETHTOOL_GSTRINGS
:
2683 rc
= ethtool_get_strings(dev
, useraddr
);
2685 case ETHTOOL_PHYS_ID
:
2686 rc
= ethtool_phys_id(dev
, useraddr
);
2688 case ETHTOOL_GSTATS
:
2689 rc
= ethtool_get_stats(dev
, useraddr
);
2691 case ETHTOOL_GPERMADDR
:
2692 rc
= ethtool_get_perm_addr(dev
, useraddr
);
2694 case ETHTOOL_GFLAGS
:
2695 rc
= ethtool_get_value(dev
, useraddr
, ethcmd
,
2696 __ethtool_get_flags
);
2698 case ETHTOOL_SFLAGS
:
2699 rc
= ethtool_set_value(dev
, useraddr
, __ethtool_set_flags
);
2701 case ETHTOOL_GPFLAGS
:
2702 rc
= ethtool_get_value(dev
, useraddr
, ethcmd
,
2703 dev
->ethtool_ops
->get_priv_flags
);
2705 case ETHTOOL_SPFLAGS
:
2706 rc
= ethtool_set_value(dev
, useraddr
,
2707 dev
->ethtool_ops
->set_priv_flags
);
2710 case ETHTOOL_GRXRINGS
:
2711 case ETHTOOL_GRXCLSRLCNT
:
2712 case ETHTOOL_GRXCLSRULE
:
2713 case ETHTOOL_GRXCLSRLALL
:
2714 rc
= ethtool_get_rxnfc(dev
, ethcmd
, useraddr
);
2717 case ETHTOOL_SRXCLSRLDEL
:
2718 case ETHTOOL_SRXCLSRLINS
:
2719 rc
= ethtool_set_rxnfc(dev
, ethcmd
, useraddr
);
2721 case ETHTOOL_FLASHDEV
:
2722 rc
= ethtool_flash_device(dev
, useraddr
);
2725 rc
= ethtool_reset(dev
, useraddr
);
2727 case ETHTOOL_GSSET_INFO
:
2728 rc
= ethtool_get_sset_info(dev
, useraddr
);
2730 case ETHTOOL_GRXFHINDIR
:
2731 rc
= ethtool_get_rxfh_indir(dev
, useraddr
);
2733 case ETHTOOL_SRXFHINDIR
:
2734 rc
= ethtool_set_rxfh_indir(dev
, useraddr
);
2737 rc
= ethtool_get_rxfh(dev
, useraddr
);
2740 rc
= ethtool_set_rxfh(dev
, useraddr
);
2742 case ETHTOOL_GFEATURES
:
2743 rc
= ethtool_get_features(dev
, useraddr
);
2745 case ETHTOOL_SFEATURES
:
2746 rc
= ethtool_set_features(dev
, useraddr
);
2748 case ETHTOOL_GTXCSUM
:
2749 case ETHTOOL_GRXCSUM
:
2754 rc
= ethtool_get_one_feature(dev
, useraddr
, ethcmd
);
2756 case ETHTOOL_STXCSUM
:
2757 case ETHTOOL_SRXCSUM
:
2762 rc
= ethtool_set_one_feature(dev
, useraddr
, ethcmd
);
2764 case ETHTOOL_GCHANNELS
:
2765 rc
= ethtool_get_channels(dev
, useraddr
);
2767 case ETHTOOL_SCHANNELS
:
2768 rc
= ethtool_set_channels(dev
, useraddr
);
2770 case ETHTOOL_SET_DUMP
:
2771 rc
= ethtool_set_dump(dev
, useraddr
);
2773 case ETHTOOL_GET_DUMP_FLAG
:
2774 rc
= ethtool_get_dump_flag(dev
, useraddr
);
2776 case ETHTOOL_GET_DUMP_DATA
:
2777 rc
= ethtool_get_dump_data(dev
, useraddr
);
2779 case ETHTOOL_GET_TS_INFO
:
2780 rc
= ethtool_get_ts_info(dev
, useraddr
);
2782 case ETHTOOL_GMODULEINFO
:
2783 rc
= ethtool_get_module_info(dev
, useraddr
);
2785 case ETHTOOL_GMODULEEEPROM
:
2786 rc
= ethtool_get_module_eeprom(dev
, useraddr
);
2788 case ETHTOOL_GTUNABLE
:
2789 rc
= ethtool_get_tunable(dev
, useraddr
);
2791 case ETHTOOL_STUNABLE
:
2792 rc
= ethtool_set_tunable(dev
, useraddr
);
2794 case ETHTOOL_GPHYSTATS
:
2795 rc
= ethtool_get_phy_stats(dev
, useraddr
);
2797 case ETHTOOL_PERQUEUE
:
2798 rc
= ethtool_set_per_queue(dev
, useraddr
);
2800 case ETHTOOL_GLINKSETTINGS
:
2801 rc
= ethtool_get_link_ksettings(dev
, useraddr
);
2803 case ETHTOOL_SLINKSETTINGS
:
2804 rc
= ethtool_set_link_ksettings(dev
, useraddr
);
2806 case ETHTOOL_PHY_GTUNABLE
:
2807 rc
= get_phy_tunable(dev
, useraddr
);
2809 case ETHTOOL_PHY_STUNABLE
:
2810 rc
= set_phy_tunable(dev
, useraddr
);
2812 case ETHTOOL_GFECPARAM
:
2813 rc
= ethtool_get_fecparam(dev
, useraddr
);
2815 case ETHTOOL_SFECPARAM
:
2816 rc
= ethtool_set_fecparam(dev
, useraddr
);
2822 if (dev
->ethtool_ops
->complete
)
2823 dev
->ethtool_ops
->complete(dev
);
2825 if (old_features
!= dev
->features
)
2826 netdev_features_change(dev
);