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 /* Given two link masks, AND them together and save the result in dst. */
407 void ethtool_intersect_link_masks(struct ethtool_link_ksettings
*dst
,
408 struct ethtool_link_ksettings
*src
)
410 unsigned int size
= BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS
);
411 unsigned int idx
= 0;
413 for (; idx
< size
; idx
++) {
414 dst
->link_modes
.supported
[idx
] &=
415 src
->link_modes
.supported
[idx
];
416 dst
->link_modes
.advertising
[idx
] &=
417 src
->link_modes
.advertising
[idx
];
420 EXPORT_SYMBOL(ethtool_intersect_link_masks
);
422 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst
,
425 bitmap_zero(dst
, __ETHTOOL_LINK_MODE_MASK_NBITS
);
428 EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode
);
430 /* return false if src had higher bits set. lower bits always updated. */
431 bool ethtool_convert_link_mode_to_legacy_u32(u32
*legacy_u32
,
432 const unsigned long *src
)
436 /* TODO: following test will soon always be true */
437 if (__ETHTOOL_LINK_MODE_MASK_NBITS
> 32) {
438 __ETHTOOL_DECLARE_LINK_MODE_MASK(ext
);
440 bitmap_zero(ext
, __ETHTOOL_LINK_MODE_MASK_NBITS
);
441 bitmap_fill(ext
, 32);
442 bitmap_complement(ext
, ext
, __ETHTOOL_LINK_MODE_MASK_NBITS
);
443 if (bitmap_intersects(ext
, src
,
444 __ETHTOOL_LINK_MODE_MASK_NBITS
)) {
445 /* src mask goes beyond bit 31 */
449 *legacy_u32
= src
[0];
452 EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32
);
454 /* return false if legacy contained non-0 deprecated fields
455 * maxtxpkt/maxrxpkt. rest of ksettings always updated
458 convert_legacy_settings_to_link_ksettings(
459 struct ethtool_link_ksettings
*link_ksettings
,
460 const struct ethtool_cmd
*legacy_settings
)
464 memset(link_ksettings
, 0, sizeof(*link_ksettings
));
466 /* This is used to tell users that driver is still using these
467 * deprecated legacy fields, and they should not use
468 * %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS
470 if (legacy_settings
->maxtxpkt
||
471 legacy_settings
->maxrxpkt
)
474 ethtool_convert_legacy_u32_to_link_mode(
475 link_ksettings
->link_modes
.supported
,
476 legacy_settings
->supported
);
477 ethtool_convert_legacy_u32_to_link_mode(
478 link_ksettings
->link_modes
.advertising
,
479 legacy_settings
->advertising
);
480 ethtool_convert_legacy_u32_to_link_mode(
481 link_ksettings
->link_modes
.lp_advertising
,
482 legacy_settings
->lp_advertising
);
483 link_ksettings
->base
.speed
484 = ethtool_cmd_speed(legacy_settings
);
485 link_ksettings
->base
.duplex
486 = legacy_settings
->duplex
;
487 link_ksettings
->base
.port
488 = legacy_settings
->port
;
489 link_ksettings
->base
.phy_address
490 = legacy_settings
->phy_address
;
491 link_ksettings
->base
.autoneg
492 = legacy_settings
->autoneg
;
493 link_ksettings
->base
.mdio_support
494 = legacy_settings
->mdio_support
;
495 link_ksettings
->base
.eth_tp_mdix
496 = legacy_settings
->eth_tp_mdix
;
497 link_ksettings
->base
.eth_tp_mdix_ctrl
498 = legacy_settings
->eth_tp_mdix_ctrl
;
502 /* return false if ksettings link modes had higher bits
503 * set. legacy_settings always updated (best effort)
506 convert_link_ksettings_to_legacy_settings(
507 struct ethtool_cmd
*legacy_settings
,
508 const struct ethtool_link_ksettings
*link_ksettings
)
512 memset(legacy_settings
, 0, sizeof(*legacy_settings
));
513 /* this also clears the deprecated fields in legacy structure:
519 retval
&= ethtool_convert_link_mode_to_legacy_u32(
520 &legacy_settings
->supported
,
521 link_ksettings
->link_modes
.supported
);
522 retval
&= ethtool_convert_link_mode_to_legacy_u32(
523 &legacy_settings
->advertising
,
524 link_ksettings
->link_modes
.advertising
);
525 retval
&= ethtool_convert_link_mode_to_legacy_u32(
526 &legacy_settings
->lp_advertising
,
527 link_ksettings
->link_modes
.lp_advertising
);
528 ethtool_cmd_speed_set(legacy_settings
, link_ksettings
->base
.speed
);
529 legacy_settings
->duplex
530 = link_ksettings
->base
.duplex
;
531 legacy_settings
->port
532 = link_ksettings
->base
.port
;
533 legacy_settings
->phy_address
534 = link_ksettings
->base
.phy_address
;
535 legacy_settings
->autoneg
536 = link_ksettings
->base
.autoneg
;
537 legacy_settings
->mdio_support
538 = link_ksettings
->base
.mdio_support
;
539 legacy_settings
->eth_tp_mdix
540 = link_ksettings
->base
.eth_tp_mdix
;
541 legacy_settings
->eth_tp_mdix_ctrl
542 = link_ksettings
->base
.eth_tp_mdix_ctrl
;
543 legacy_settings
->transceiver
544 = link_ksettings
->base
.transceiver
;
548 /* number of 32-bit words to store the user's link mode bitmaps */
549 #define __ETHTOOL_LINK_MODE_MASK_NU32 \
550 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
552 /* layout of the struct passed from/to userland */
553 struct ethtool_link_usettings
{
554 struct ethtool_link_settings base
;
556 __u32 supported
[__ETHTOOL_LINK_MODE_MASK_NU32
];
557 __u32 advertising
[__ETHTOOL_LINK_MODE_MASK_NU32
];
558 __u32 lp_advertising
[__ETHTOOL_LINK_MODE_MASK_NU32
];
562 /* Internal kernel helper to query a device ethtool_link_settings.
564 * Backward compatibility note: for compatibility with legacy drivers
565 * that implement only the ethtool_cmd API, this has to work with both
566 * drivers implementing get_link_ksettings API and drivers
567 * implementing get_settings API. When drivers implement get_settings
568 * and report ethtool_cmd deprecated fields
569 * (transceiver/maxrxpkt/maxtxpkt), these fields are silently ignored
570 * because the resulting struct ethtool_link_settings does not report them.
572 int __ethtool_get_link_ksettings(struct net_device
*dev
,
573 struct ethtool_link_ksettings
*link_ksettings
)
576 struct ethtool_cmd cmd
;
580 if (dev
->ethtool_ops
->get_link_ksettings
) {
581 memset(link_ksettings
, 0, sizeof(*link_ksettings
));
582 return dev
->ethtool_ops
->get_link_ksettings(dev
,
586 /* driver doesn't support %ethtool_link_ksettings API. revert to
587 * legacy %ethtool_cmd API, unless it's not supported either.
588 * TODO: remove when ethtool_ops::get_settings disappears internally
590 if (!dev
->ethtool_ops
->get_settings
)
593 memset(&cmd
, 0, sizeof(cmd
));
594 cmd
.cmd
= ETHTOOL_GSET
;
595 err
= dev
->ethtool_ops
->get_settings(dev
, &cmd
);
599 /* we ignore deprecated fields transceiver/maxrxpkt/maxtxpkt
601 convert_legacy_settings_to_link_ksettings(link_ksettings
, &cmd
);
604 EXPORT_SYMBOL(__ethtool_get_link_ksettings
);
606 /* convert ethtool_link_usettings in user space to a kernel internal
607 * ethtool_link_ksettings. return 0 on success, errno on error.
609 static int load_link_ksettings_from_user(struct ethtool_link_ksettings
*to
,
610 const void __user
*from
)
612 struct ethtool_link_usettings link_usettings
;
614 if (copy_from_user(&link_usettings
, from
, sizeof(link_usettings
)))
617 memcpy(&to
->base
, &link_usettings
.base
, sizeof(to
->base
));
618 bitmap_from_u32array(to
->link_modes
.supported
,
619 __ETHTOOL_LINK_MODE_MASK_NBITS
,
620 link_usettings
.link_modes
.supported
,
621 __ETHTOOL_LINK_MODE_MASK_NU32
);
622 bitmap_from_u32array(to
->link_modes
.advertising
,
623 __ETHTOOL_LINK_MODE_MASK_NBITS
,
624 link_usettings
.link_modes
.advertising
,
625 __ETHTOOL_LINK_MODE_MASK_NU32
);
626 bitmap_from_u32array(to
->link_modes
.lp_advertising
,
627 __ETHTOOL_LINK_MODE_MASK_NBITS
,
628 link_usettings
.link_modes
.lp_advertising
,
629 __ETHTOOL_LINK_MODE_MASK_NU32
);
634 /* convert a kernel internal ethtool_link_ksettings to
635 * ethtool_link_usettings in user space. return 0 on success, errno on
639 store_link_ksettings_for_user(void __user
*to
,
640 const struct ethtool_link_ksettings
*from
)
642 struct ethtool_link_usettings link_usettings
;
644 memcpy(&link_usettings
.base
, &from
->base
, sizeof(link_usettings
));
645 bitmap_to_u32array(link_usettings
.link_modes
.supported
,
646 __ETHTOOL_LINK_MODE_MASK_NU32
,
647 from
->link_modes
.supported
,
648 __ETHTOOL_LINK_MODE_MASK_NBITS
);
649 bitmap_to_u32array(link_usettings
.link_modes
.advertising
,
650 __ETHTOOL_LINK_MODE_MASK_NU32
,
651 from
->link_modes
.advertising
,
652 __ETHTOOL_LINK_MODE_MASK_NBITS
);
653 bitmap_to_u32array(link_usettings
.link_modes
.lp_advertising
,
654 __ETHTOOL_LINK_MODE_MASK_NU32
,
655 from
->link_modes
.lp_advertising
,
656 __ETHTOOL_LINK_MODE_MASK_NBITS
);
658 if (copy_to_user(to
, &link_usettings
, sizeof(link_usettings
)))
664 /* Query device for its ethtool_link_settings.
666 * Backward compatibility note: this function must fail when driver
667 * does not implement ethtool::get_link_ksettings, even if legacy
668 * ethtool_ops::get_settings is implemented. This tells new versions
669 * of ethtool that they should use the legacy API %ETHTOOL_GSET for
670 * this driver, so that they can correctly access the ethtool_cmd
671 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
672 * implements ethtool_ops::get_settings anymore.
674 static int ethtool_get_link_ksettings(struct net_device
*dev
,
675 void __user
*useraddr
)
678 struct ethtool_link_ksettings link_ksettings
;
682 if (!dev
->ethtool_ops
->get_link_ksettings
)
685 /* handle bitmap nbits handshake */
686 if (copy_from_user(&link_ksettings
.base
, useraddr
,
687 sizeof(link_ksettings
.base
)))
690 if (__ETHTOOL_LINK_MODE_MASK_NU32
691 != link_ksettings
.base
.link_mode_masks_nwords
) {
692 /* wrong link mode nbits requested */
693 memset(&link_ksettings
, 0, sizeof(link_ksettings
));
694 link_ksettings
.base
.cmd
= ETHTOOL_GLINKSETTINGS
;
695 /* send back number of words required as negative val */
696 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32
<= S8_MAX
,
697 "need too many bits for link modes!");
698 link_ksettings
.base
.link_mode_masks_nwords
699 = -((s8
)__ETHTOOL_LINK_MODE_MASK_NU32
);
701 /* copy the base fields back to user, not the link
704 if (copy_to_user(useraddr
, &link_ksettings
.base
,
705 sizeof(link_ksettings
.base
)))
711 /* handshake successful: user/kernel agree on
712 * link_mode_masks_nwords
715 memset(&link_ksettings
, 0, sizeof(link_ksettings
));
716 err
= dev
->ethtool_ops
->get_link_ksettings(dev
, &link_ksettings
);
720 /* make sure we tell the right values to user */
721 link_ksettings
.base
.cmd
= ETHTOOL_GLINKSETTINGS
;
722 link_ksettings
.base
.link_mode_masks_nwords
723 = __ETHTOOL_LINK_MODE_MASK_NU32
;
725 return store_link_ksettings_for_user(useraddr
, &link_ksettings
);
728 /* Update device ethtool_link_settings.
730 * Backward compatibility note: this function must fail when driver
731 * does not implement ethtool::set_link_ksettings, even if legacy
732 * ethtool_ops::set_settings is implemented. This tells new versions
733 * of ethtool that they should use the legacy API %ETHTOOL_SSET for
734 * this driver, so that they can correctly update the ethtool_cmd
735 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
736 * implements ethtool_ops::get_settings anymore.
738 static int ethtool_set_link_ksettings(struct net_device
*dev
,
739 void __user
*useraddr
)
742 struct ethtool_link_ksettings link_ksettings
;
746 if (!dev
->ethtool_ops
->set_link_ksettings
)
749 /* make sure nbits field has expected value */
750 if (copy_from_user(&link_ksettings
.base
, useraddr
,
751 sizeof(link_ksettings
.base
)))
754 if (__ETHTOOL_LINK_MODE_MASK_NU32
755 != link_ksettings
.base
.link_mode_masks_nwords
)
758 /* copy the whole structure, now that we know it has expected
761 err
= load_link_ksettings_from_user(&link_ksettings
, useraddr
);
765 /* re-check nwords field, just in case */
766 if (__ETHTOOL_LINK_MODE_MASK_NU32
767 != link_ksettings
.base
.link_mode_masks_nwords
)
770 return dev
->ethtool_ops
->set_link_ksettings(dev
, &link_ksettings
);
774 warn_incomplete_ethtool_legacy_settings_conversion(const char *details
)
776 char name
[sizeof(current
->comm
)];
778 pr_info_once("warning: `%s' uses legacy ethtool link settings API, %s\n",
779 get_task_comm(name
, current
), details
);
782 /* Query device for its ethtool_cmd settings.
784 * Backward compatibility note: for compatibility with legacy ethtool,
785 * this has to work with both drivers implementing get_link_ksettings
786 * API and drivers implementing get_settings API. When drivers
787 * implement get_link_ksettings and report higher link mode bits, a
788 * kernel warning is logged once (with name of 1st driver/device) to
789 * recommend user to upgrade ethtool, but the command is successful
790 * (only the lower link mode bits reported back to user).
792 static int ethtool_get_settings(struct net_device
*dev
, void __user
*useraddr
)
794 struct ethtool_cmd cmd
;
798 if (dev
->ethtool_ops
->get_link_ksettings
) {
799 /* First, use link_ksettings API if it is supported */
801 struct ethtool_link_ksettings link_ksettings
;
803 memset(&link_ksettings
, 0, sizeof(link_ksettings
));
804 err
= dev
->ethtool_ops
->get_link_ksettings(dev
,
808 if (!convert_link_ksettings_to_legacy_settings(&cmd
,
810 warn_incomplete_ethtool_legacy_settings_conversion(
811 "link modes are only partially reported");
813 /* send a sensible cmd tag back to user */
814 cmd
.cmd
= ETHTOOL_GSET
;
816 /* driver doesn't support %ethtool_link_ksettings
817 * API. revert to legacy %ethtool_cmd API, unless it's
818 * not supported either.
822 if (!dev
->ethtool_ops
->get_settings
)
825 memset(&cmd
, 0, sizeof(cmd
));
826 cmd
.cmd
= ETHTOOL_GSET
;
827 err
= dev
->ethtool_ops
->get_settings(dev
, &cmd
);
832 if (copy_to_user(useraddr
, &cmd
, sizeof(cmd
)))
838 /* Update device link settings with given ethtool_cmd.
840 * Backward compatibility note: for compatibility with legacy ethtool,
841 * this has to work with both drivers implementing set_link_ksettings
842 * API and drivers implementing set_settings API. When drivers
843 * implement set_link_ksettings and user's request updates deprecated
844 * ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
845 * warning is logged once (with name of 1st driver/device) to
846 * recommend user to upgrade ethtool, and the request is rejected.
848 static int ethtool_set_settings(struct net_device
*dev
, void __user
*useraddr
)
850 struct ethtool_cmd cmd
;
854 if (copy_from_user(&cmd
, useraddr
, sizeof(cmd
)))
857 /* first, try new %ethtool_link_ksettings API. */
858 if (dev
->ethtool_ops
->set_link_ksettings
) {
859 struct ethtool_link_ksettings link_ksettings
;
861 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings
,
865 link_ksettings
.base
.cmd
= ETHTOOL_SLINKSETTINGS
;
866 link_ksettings
.base
.link_mode_masks_nwords
867 = __ETHTOOL_LINK_MODE_MASK_NU32
;
868 return dev
->ethtool_ops
->set_link_ksettings(dev
,
872 /* legacy %ethtool_cmd API */
874 /* TODO: return -EOPNOTSUPP when ethtool_ops::get_settings
875 * disappears internally
878 if (!dev
->ethtool_ops
->set_settings
)
881 return dev
->ethtool_ops
->set_settings(dev
, &cmd
);
884 static noinline_for_stack
int ethtool_get_drvinfo(struct net_device
*dev
,
885 void __user
*useraddr
)
887 struct ethtool_drvinfo info
;
888 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
890 memset(&info
, 0, sizeof(info
));
891 info
.cmd
= ETHTOOL_GDRVINFO
;
892 if (ops
->get_drvinfo
) {
893 ops
->get_drvinfo(dev
, &info
);
894 } else if (dev
->dev
.parent
&& dev
->dev
.parent
->driver
) {
895 strlcpy(info
.bus_info
, dev_name(dev
->dev
.parent
),
896 sizeof(info
.bus_info
));
897 strlcpy(info
.driver
, dev
->dev
.parent
->driver
->name
,
898 sizeof(info
.driver
));
904 * this method of obtaining string set info is deprecated;
905 * Use ETHTOOL_GSSET_INFO instead.
907 if (ops
->get_sset_count
) {
910 rc
= ops
->get_sset_count(dev
, ETH_SS_TEST
);
912 info
.testinfo_len
= rc
;
913 rc
= ops
->get_sset_count(dev
, ETH_SS_STATS
);
916 rc
= ops
->get_sset_count(dev
, ETH_SS_PRIV_FLAGS
);
918 info
.n_priv_flags
= rc
;
920 if (ops
->get_regs_len
)
921 info
.regdump_len
= ops
->get_regs_len(dev
);
922 if (ops
->get_eeprom_len
)
923 info
.eedump_len
= ops
->get_eeprom_len(dev
);
925 if (copy_to_user(useraddr
, &info
, sizeof(info
)))
930 static noinline_for_stack
int ethtool_get_sset_info(struct net_device
*dev
,
931 void __user
*useraddr
)
933 struct ethtool_sset_info info
;
935 int i
, idx
= 0, n_bits
= 0, ret
, rc
;
936 u32
*info_buf
= NULL
;
938 if (copy_from_user(&info
, useraddr
, sizeof(info
)))
941 /* store copy of mask, because we zero struct later on */
942 sset_mask
= info
.sset_mask
;
946 /* calculate size of return buffer */
947 n_bits
= hweight64(sset_mask
);
949 memset(&info
, 0, sizeof(info
));
950 info
.cmd
= ETHTOOL_GSSET_INFO
;
952 info_buf
= kzalloc(n_bits
* sizeof(u32
), GFP_USER
);
957 * fill return buffer based on input bitmask and successful
958 * get_sset_count return
960 for (i
= 0; i
< 64; i
++) {
961 if (!(sset_mask
& (1ULL << i
)))
964 rc
= __ethtool_get_sset_count(dev
, i
);
966 info
.sset_mask
|= (1ULL << i
);
967 info_buf
[idx
++] = rc
;
972 if (copy_to_user(useraddr
, &info
, sizeof(info
)))
975 useraddr
+= offsetof(struct ethtool_sset_info
, data
);
976 if (copy_to_user(useraddr
, info_buf
, idx
* sizeof(u32
)))
986 static noinline_for_stack
int ethtool_set_rxnfc(struct net_device
*dev
,
987 u32 cmd
, void __user
*useraddr
)
989 struct ethtool_rxnfc info
;
990 size_t info_size
= sizeof(info
);
993 if (!dev
->ethtool_ops
->set_rxnfc
)
996 /* struct ethtool_rxnfc was originally defined for
997 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
998 * members. User-space might still be using that
1000 if (cmd
== ETHTOOL_SRXFH
)
1001 info_size
= (offsetof(struct ethtool_rxnfc
, data
) +
1004 if (copy_from_user(&info
, useraddr
, info_size
))
1007 rc
= dev
->ethtool_ops
->set_rxnfc(dev
, &info
);
1011 if (cmd
== ETHTOOL_SRXCLSRLINS
&&
1012 copy_to_user(useraddr
, &info
, info_size
))
1018 static noinline_for_stack
int ethtool_get_rxnfc(struct net_device
*dev
,
1019 u32 cmd
, void __user
*useraddr
)
1021 struct ethtool_rxnfc info
;
1022 size_t info_size
= sizeof(info
);
1023 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1025 void *rule_buf
= NULL
;
1027 if (!ops
->get_rxnfc
)
1030 /* struct ethtool_rxnfc was originally defined for
1031 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
1032 * members. User-space might still be using that
1034 if (cmd
== ETHTOOL_GRXFH
)
1035 info_size
= (offsetof(struct ethtool_rxnfc
, data
) +
1038 if (copy_from_user(&info
, useraddr
, info_size
))
1041 if (info
.cmd
== ETHTOOL_GRXCLSRLALL
) {
1042 if (info
.rule_cnt
> 0) {
1043 if (info
.rule_cnt
<= KMALLOC_MAX_SIZE
/ sizeof(u32
))
1044 rule_buf
= kzalloc(info
.rule_cnt
* sizeof(u32
),
1051 ret
= ops
->get_rxnfc(dev
, &info
, rule_buf
);
1056 if (copy_to_user(useraddr
, &info
, info_size
))
1060 useraddr
+= offsetof(struct ethtool_rxnfc
, rule_locs
);
1061 if (copy_to_user(useraddr
, rule_buf
,
1062 info
.rule_cnt
* sizeof(u32
)))
1073 static int ethtool_copy_validate_indir(u32
*indir
, void __user
*useraddr
,
1074 struct ethtool_rxnfc
*rx_rings
,
1079 if (copy_from_user(indir
, useraddr
, size
* sizeof(indir
[0])))
1082 /* Validate ring indices */
1083 for (i
= 0; i
< size
; i
++)
1084 if (indir
[i
] >= rx_rings
->data
)
1090 u8 netdev_rss_key
[NETDEV_RSS_KEY_LEN
] __read_mostly
;
1092 void netdev_rss_key_fill(void *buffer
, size_t len
)
1094 BUG_ON(len
> sizeof(netdev_rss_key
));
1095 net_get_random_once(netdev_rss_key
, sizeof(netdev_rss_key
));
1096 memcpy(buffer
, netdev_rss_key
, len
);
1098 EXPORT_SYMBOL(netdev_rss_key_fill
);
1100 static int ethtool_get_max_rxfh_channel(struct net_device
*dev
, u32
*max
)
1102 u32 dev_size
, current_max
= 0;
1106 if (!dev
->ethtool_ops
->get_rxfh_indir_size
||
1107 !dev
->ethtool_ops
->get_rxfh
)
1109 dev_size
= dev
->ethtool_ops
->get_rxfh_indir_size(dev
);
1113 indir
= kcalloc(dev_size
, sizeof(indir
[0]), GFP_USER
);
1117 ret
= dev
->ethtool_ops
->get_rxfh(dev
, indir
, NULL
, NULL
);
1122 current_max
= max(current_max
, indir
[dev_size
]);
1131 static noinline_for_stack
int ethtool_get_rxfh_indir(struct net_device
*dev
,
1132 void __user
*useraddr
)
1134 u32 user_size
, dev_size
;
1138 if (!dev
->ethtool_ops
->get_rxfh_indir_size
||
1139 !dev
->ethtool_ops
->get_rxfh
)
1141 dev_size
= dev
->ethtool_ops
->get_rxfh_indir_size(dev
);
1145 if (copy_from_user(&user_size
,
1146 useraddr
+ offsetof(struct ethtool_rxfh_indir
, size
),
1150 if (copy_to_user(useraddr
+ offsetof(struct ethtool_rxfh_indir
, size
),
1151 &dev_size
, sizeof(dev_size
)))
1154 /* If the user buffer size is 0, this is just a query for the
1155 * device table size. Otherwise, if it's smaller than the
1156 * device table size it's an error.
1158 if (user_size
< dev_size
)
1159 return user_size
== 0 ? 0 : -EINVAL
;
1161 indir
= kcalloc(dev_size
, sizeof(indir
[0]), GFP_USER
);
1165 ret
= dev
->ethtool_ops
->get_rxfh(dev
, indir
, NULL
, NULL
);
1169 if (copy_to_user(useraddr
+
1170 offsetof(struct ethtool_rxfh_indir
, ring_index
[0]),
1171 indir
, dev_size
* sizeof(indir
[0])))
1179 static noinline_for_stack
int ethtool_set_rxfh_indir(struct net_device
*dev
,
1180 void __user
*useraddr
)
1182 struct ethtool_rxnfc rx_rings
;
1183 u32 user_size
, dev_size
, i
;
1185 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1187 u32 ringidx_offset
= offsetof(struct ethtool_rxfh_indir
, ring_index
[0]);
1189 if (!ops
->get_rxfh_indir_size
|| !ops
->set_rxfh
||
1193 dev_size
= ops
->get_rxfh_indir_size(dev
);
1197 if (copy_from_user(&user_size
,
1198 useraddr
+ offsetof(struct ethtool_rxfh_indir
, size
),
1202 if (user_size
!= 0 && user_size
!= dev_size
)
1205 indir
= kcalloc(dev_size
, sizeof(indir
[0]), GFP_USER
);
1209 rx_rings
.cmd
= ETHTOOL_GRXRINGS
;
1210 ret
= ops
->get_rxnfc(dev
, &rx_rings
, NULL
);
1214 if (user_size
== 0) {
1215 for (i
= 0; i
< dev_size
; i
++)
1216 indir
[i
] = ethtool_rxfh_indir_default(i
, rx_rings
.data
);
1218 ret
= ethtool_copy_validate_indir(indir
,
1219 useraddr
+ ringidx_offset
,
1226 ret
= ops
->set_rxfh(dev
, indir
, NULL
, ETH_RSS_HASH_NO_CHANGE
);
1230 /* indicate whether rxfh was set to default */
1232 dev
->priv_flags
&= ~IFF_RXFH_CONFIGURED
;
1234 dev
->priv_flags
|= IFF_RXFH_CONFIGURED
;
1241 static noinline_for_stack
int ethtool_get_rxfh(struct net_device
*dev
,
1242 void __user
*useraddr
)
1245 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1246 u32 user_indir_size
, user_key_size
;
1247 u32 dev_indir_size
= 0, dev_key_size
= 0;
1248 struct ethtool_rxfh rxfh
;
1259 if (ops
->get_rxfh_indir_size
)
1260 dev_indir_size
= ops
->get_rxfh_indir_size(dev
);
1261 if (ops
->get_rxfh_key_size
)
1262 dev_key_size
= ops
->get_rxfh_key_size(dev
);
1264 if (copy_from_user(&rxfh
, useraddr
, sizeof(rxfh
)))
1266 user_indir_size
= rxfh
.indir_size
;
1267 user_key_size
= rxfh
.key_size
;
1269 /* Check that reserved fields are 0 for now */
1270 if (rxfh
.rss_context
|| rxfh
.rsvd8
[0] || rxfh
.rsvd8
[1] ||
1271 rxfh
.rsvd8
[2] || rxfh
.rsvd32
)
1274 rxfh
.indir_size
= dev_indir_size
;
1275 rxfh
.key_size
= dev_key_size
;
1276 if (copy_to_user(useraddr
, &rxfh
, sizeof(rxfh
)))
1279 if ((user_indir_size
&& (user_indir_size
!= dev_indir_size
)) ||
1280 (user_key_size
&& (user_key_size
!= dev_key_size
)))
1283 indir_bytes
= user_indir_size
* sizeof(indir
[0]);
1284 total_size
= indir_bytes
+ user_key_size
;
1285 rss_config
= kzalloc(total_size
, GFP_USER
);
1289 if (user_indir_size
)
1290 indir
= (u32
*)rss_config
;
1293 hkey
= rss_config
+ indir_bytes
;
1295 ret
= dev
->ethtool_ops
->get_rxfh(dev
, indir
, hkey
, &dev_hfunc
);
1299 if (copy_to_user(useraddr
+ offsetof(struct ethtool_rxfh
, hfunc
),
1300 &dev_hfunc
, sizeof(rxfh
.hfunc
))) {
1302 } else if (copy_to_user(useraddr
+
1303 offsetof(struct ethtool_rxfh
, rss_config
[0]),
1304 rss_config
, total_size
)) {
1313 static noinline_for_stack
int ethtool_set_rxfh(struct net_device
*dev
,
1314 void __user
*useraddr
)
1317 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1318 struct ethtool_rxnfc rx_rings
;
1319 struct ethtool_rxfh rxfh
;
1320 u32 dev_indir_size
= 0, dev_key_size
= 0, i
;
1321 u32
*indir
= NULL
, indir_bytes
= 0;
1324 u32 rss_cfg_offset
= offsetof(struct ethtool_rxfh
, rss_config
[0]);
1326 if (!ops
->get_rxnfc
|| !ops
->set_rxfh
)
1329 if (ops
->get_rxfh_indir_size
)
1330 dev_indir_size
= ops
->get_rxfh_indir_size(dev
);
1331 if (ops
->get_rxfh_key_size
)
1332 dev_key_size
= ops
->get_rxfh_key_size(dev
);
1334 if (copy_from_user(&rxfh
, useraddr
, sizeof(rxfh
)))
1337 /* Check that reserved fields are 0 for now */
1338 if (rxfh
.rss_context
|| rxfh
.rsvd8
[0] || rxfh
.rsvd8
[1] ||
1339 rxfh
.rsvd8
[2] || rxfh
.rsvd32
)
1342 /* If either indir, hash key or function is valid, proceed further.
1343 * Must request at least one change: indir size, hash key or function.
1345 if ((rxfh
.indir_size
&&
1346 rxfh
.indir_size
!= ETH_RXFH_INDIR_NO_CHANGE
&&
1347 rxfh
.indir_size
!= dev_indir_size
) ||
1348 (rxfh
.key_size
&& (rxfh
.key_size
!= dev_key_size
)) ||
1349 (rxfh
.indir_size
== ETH_RXFH_INDIR_NO_CHANGE
&&
1350 rxfh
.key_size
== 0 && rxfh
.hfunc
== ETH_RSS_HASH_NO_CHANGE
))
1353 if (rxfh
.indir_size
!= ETH_RXFH_INDIR_NO_CHANGE
)
1354 indir_bytes
= dev_indir_size
* sizeof(indir
[0]);
1356 rss_config
= kzalloc(indir_bytes
+ rxfh
.key_size
, GFP_USER
);
1360 rx_rings
.cmd
= ETHTOOL_GRXRINGS
;
1361 ret
= ops
->get_rxnfc(dev
, &rx_rings
, NULL
);
1365 /* rxfh.indir_size == 0 means reset the indir table to default.
1366 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
1368 if (rxfh
.indir_size
&&
1369 rxfh
.indir_size
!= ETH_RXFH_INDIR_NO_CHANGE
) {
1370 indir
= (u32
*)rss_config
;
1371 ret
= ethtool_copy_validate_indir(indir
,
1372 useraddr
+ rss_cfg_offset
,
1377 } else if (rxfh
.indir_size
== 0) {
1378 indir
= (u32
*)rss_config
;
1379 for (i
= 0; i
< dev_indir_size
; i
++)
1380 indir
[i
] = ethtool_rxfh_indir_default(i
, rx_rings
.data
);
1383 if (rxfh
.key_size
) {
1384 hkey
= rss_config
+ indir_bytes
;
1385 if (copy_from_user(hkey
,
1386 useraddr
+ rss_cfg_offset
+ indir_bytes
,
1393 ret
= ops
->set_rxfh(dev
, indir
, hkey
, rxfh
.hfunc
);
1397 /* indicate whether rxfh was set to default */
1398 if (rxfh
.indir_size
== 0)
1399 dev
->priv_flags
&= ~IFF_RXFH_CONFIGURED
;
1400 else if (rxfh
.indir_size
!= ETH_RXFH_INDIR_NO_CHANGE
)
1401 dev
->priv_flags
|= IFF_RXFH_CONFIGURED
;
1408 static int ethtool_get_regs(struct net_device
*dev
, char __user
*useraddr
)
1410 struct ethtool_regs regs
;
1411 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1415 if (!ops
->get_regs
|| !ops
->get_regs_len
)
1418 if (copy_from_user(®s
, useraddr
, sizeof(regs
)))
1421 reglen
= ops
->get_regs_len(dev
);
1422 if (regs
.len
> reglen
)
1427 regbuf
= vzalloc(reglen
);
1432 ops
->get_regs(dev
, ®s
, regbuf
);
1435 if (copy_to_user(useraddr
, ®s
, sizeof(regs
)))
1437 useraddr
+= offsetof(struct ethtool_regs
, data
);
1438 if (regbuf
&& copy_to_user(useraddr
, regbuf
, regs
.len
))
1447 static int ethtool_reset(struct net_device
*dev
, char __user
*useraddr
)
1449 struct ethtool_value reset
;
1452 if (!dev
->ethtool_ops
->reset
)
1455 if (copy_from_user(&reset
, useraddr
, sizeof(reset
)))
1458 ret
= dev
->ethtool_ops
->reset(dev
, &reset
.data
);
1462 if (copy_to_user(useraddr
, &reset
, sizeof(reset
)))
1467 static int ethtool_get_wol(struct net_device
*dev
, char __user
*useraddr
)
1469 struct ethtool_wolinfo wol
= { .cmd
= ETHTOOL_GWOL
};
1471 if (!dev
->ethtool_ops
->get_wol
)
1474 dev
->ethtool_ops
->get_wol(dev
, &wol
);
1476 if (copy_to_user(useraddr
, &wol
, sizeof(wol
)))
1481 static int ethtool_set_wol(struct net_device
*dev
, char __user
*useraddr
)
1483 struct ethtool_wolinfo wol
;
1485 if (!dev
->ethtool_ops
->set_wol
)
1488 if (copy_from_user(&wol
, useraddr
, sizeof(wol
)))
1491 return dev
->ethtool_ops
->set_wol(dev
, &wol
);
1494 static int ethtool_get_eee(struct net_device
*dev
, char __user
*useraddr
)
1496 struct ethtool_eee edata
;
1499 if (!dev
->ethtool_ops
->get_eee
)
1502 memset(&edata
, 0, sizeof(struct ethtool_eee
));
1503 edata
.cmd
= ETHTOOL_GEEE
;
1504 rc
= dev
->ethtool_ops
->get_eee(dev
, &edata
);
1509 if (copy_to_user(useraddr
, &edata
, sizeof(edata
)))
1515 static int ethtool_set_eee(struct net_device
*dev
, char __user
*useraddr
)
1517 struct ethtool_eee edata
;
1519 if (!dev
->ethtool_ops
->set_eee
)
1522 if (copy_from_user(&edata
, useraddr
, sizeof(edata
)))
1525 return dev
->ethtool_ops
->set_eee(dev
, &edata
);
1528 static int ethtool_nway_reset(struct net_device
*dev
)
1530 if (!dev
->ethtool_ops
->nway_reset
)
1533 return dev
->ethtool_ops
->nway_reset(dev
);
1536 static int ethtool_get_link(struct net_device
*dev
, char __user
*useraddr
)
1538 struct ethtool_value edata
= { .cmd
= ETHTOOL_GLINK
};
1540 if (!dev
->ethtool_ops
->get_link
)
1543 edata
.data
= netif_running(dev
) && dev
->ethtool_ops
->get_link(dev
);
1545 if (copy_to_user(useraddr
, &edata
, sizeof(edata
)))
1550 static int ethtool_get_any_eeprom(struct net_device
*dev
, void __user
*useraddr
,
1551 int (*getter
)(struct net_device
*,
1552 struct ethtool_eeprom
*, u8
*),
1555 struct ethtool_eeprom eeprom
;
1556 void __user
*userbuf
= useraddr
+ sizeof(eeprom
);
1557 u32 bytes_remaining
;
1561 if (copy_from_user(&eeprom
, useraddr
, sizeof(eeprom
)))
1564 /* Check for wrap and zero */
1565 if (eeprom
.offset
+ eeprom
.len
<= eeprom
.offset
)
1568 /* Check for exceeding total eeprom len */
1569 if (eeprom
.offset
+ eeprom
.len
> total_len
)
1572 data
= kmalloc(PAGE_SIZE
, GFP_USER
);
1576 bytes_remaining
= eeprom
.len
;
1577 while (bytes_remaining
> 0) {
1578 eeprom
.len
= min(bytes_remaining
, (u32
)PAGE_SIZE
);
1580 ret
= getter(dev
, &eeprom
, data
);
1583 if (copy_to_user(userbuf
, data
, eeprom
.len
)) {
1587 userbuf
+= eeprom
.len
;
1588 eeprom
.offset
+= eeprom
.len
;
1589 bytes_remaining
-= eeprom
.len
;
1592 eeprom
.len
= userbuf
- (useraddr
+ sizeof(eeprom
));
1593 eeprom
.offset
-= eeprom
.len
;
1594 if (copy_to_user(useraddr
, &eeprom
, sizeof(eeprom
)))
1601 static int ethtool_get_eeprom(struct net_device
*dev
, void __user
*useraddr
)
1603 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1605 if (!ops
->get_eeprom
|| !ops
->get_eeprom_len
||
1606 !ops
->get_eeprom_len(dev
))
1609 return ethtool_get_any_eeprom(dev
, useraddr
, ops
->get_eeprom
,
1610 ops
->get_eeprom_len(dev
));
1613 static int ethtool_set_eeprom(struct net_device
*dev
, void __user
*useraddr
)
1615 struct ethtool_eeprom eeprom
;
1616 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1617 void __user
*userbuf
= useraddr
+ sizeof(eeprom
);
1618 u32 bytes_remaining
;
1622 if (!ops
->set_eeprom
|| !ops
->get_eeprom_len
||
1623 !ops
->get_eeprom_len(dev
))
1626 if (copy_from_user(&eeprom
, useraddr
, sizeof(eeprom
)))
1629 /* Check for wrap and zero */
1630 if (eeprom
.offset
+ eeprom
.len
<= eeprom
.offset
)
1633 /* Check for exceeding total eeprom len */
1634 if (eeprom
.offset
+ eeprom
.len
> ops
->get_eeprom_len(dev
))
1637 data
= kmalloc(PAGE_SIZE
, GFP_USER
);
1641 bytes_remaining
= eeprom
.len
;
1642 while (bytes_remaining
> 0) {
1643 eeprom
.len
= min(bytes_remaining
, (u32
)PAGE_SIZE
);
1645 if (copy_from_user(data
, userbuf
, eeprom
.len
)) {
1649 ret
= ops
->set_eeprom(dev
, &eeprom
, data
);
1652 userbuf
+= eeprom
.len
;
1653 eeprom
.offset
+= eeprom
.len
;
1654 bytes_remaining
-= eeprom
.len
;
1661 static noinline_for_stack
int ethtool_get_coalesce(struct net_device
*dev
,
1662 void __user
*useraddr
)
1664 struct ethtool_coalesce coalesce
= { .cmd
= ETHTOOL_GCOALESCE
};
1666 if (!dev
->ethtool_ops
->get_coalesce
)
1669 dev
->ethtool_ops
->get_coalesce(dev
, &coalesce
);
1671 if (copy_to_user(useraddr
, &coalesce
, sizeof(coalesce
)))
1676 static noinline_for_stack
int ethtool_set_coalesce(struct net_device
*dev
,
1677 void __user
*useraddr
)
1679 struct ethtool_coalesce coalesce
;
1681 if (!dev
->ethtool_ops
->set_coalesce
)
1684 if (copy_from_user(&coalesce
, useraddr
, sizeof(coalesce
)))
1687 return dev
->ethtool_ops
->set_coalesce(dev
, &coalesce
);
1690 static int ethtool_get_ringparam(struct net_device
*dev
, void __user
*useraddr
)
1692 struct ethtool_ringparam ringparam
= { .cmd
= ETHTOOL_GRINGPARAM
};
1694 if (!dev
->ethtool_ops
->get_ringparam
)
1697 dev
->ethtool_ops
->get_ringparam(dev
, &ringparam
);
1699 if (copy_to_user(useraddr
, &ringparam
, sizeof(ringparam
)))
1704 static int ethtool_set_ringparam(struct net_device
*dev
, void __user
*useraddr
)
1706 struct ethtool_ringparam ringparam
;
1708 if (!dev
->ethtool_ops
->set_ringparam
)
1711 if (copy_from_user(&ringparam
, useraddr
, sizeof(ringparam
)))
1714 return dev
->ethtool_ops
->set_ringparam(dev
, &ringparam
);
1717 static noinline_for_stack
int ethtool_get_channels(struct net_device
*dev
,
1718 void __user
*useraddr
)
1720 struct ethtool_channels channels
= { .cmd
= ETHTOOL_GCHANNELS
};
1722 if (!dev
->ethtool_ops
->get_channels
)
1725 dev
->ethtool_ops
->get_channels(dev
, &channels
);
1727 if (copy_to_user(useraddr
, &channels
, sizeof(channels
)))
1732 static noinline_for_stack
int ethtool_set_channels(struct net_device
*dev
,
1733 void __user
*useraddr
)
1735 struct ethtool_channels channels
, max
= { .cmd
= ETHTOOL_GCHANNELS
};
1736 u32 max_rx_in_use
= 0;
1738 if (!dev
->ethtool_ops
->set_channels
|| !dev
->ethtool_ops
->get_channels
)
1741 if (copy_from_user(&channels
, useraddr
, sizeof(channels
)))
1744 dev
->ethtool_ops
->get_channels(dev
, &max
);
1746 /* ensure new counts are within the maximums */
1747 if ((channels
.rx_count
> max
.max_rx
) ||
1748 (channels
.tx_count
> max
.max_tx
) ||
1749 (channels
.combined_count
> max
.max_combined
) ||
1750 (channels
.other_count
> max
.max_other
))
1753 /* ensure the new Rx count fits within the configured Rx flow
1754 * indirection table settings */
1755 if (netif_is_rxfh_configured(dev
) &&
1756 !ethtool_get_max_rxfh_channel(dev
, &max_rx_in_use
) &&
1757 (channels
.combined_count
+ channels
.rx_count
) <= max_rx_in_use
)
1760 return dev
->ethtool_ops
->set_channels(dev
, &channels
);
1763 static int ethtool_get_pauseparam(struct net_device
*dev
, void __user
*useraddr
)
1765 struct ethtool_pauseparam pauseparam
= { ETHTOOL_GPAUSEPARAM
};
1767 if (!dev
->ethtool_ops
->get_pauseparam
)
1770 dev
->ethtool_ops
->get_pauseparam(dev
, &pauseparam
);
1772 if (copy_to_user(useraddr
, &pauseparam
, sizeof(pauseparam
)))
1777 static int ethtool_set_pauseparam(struct net_device
*dev
, void __user
*useraddr
)
1779 struct ethtool_pauseparam pauseparam
;
1781 if (!dev
->ethtool_ops
->set_pauseparam
)
1784 if (copy_from_user(&pauseparam
, useraddr
, sizeof(pauseparam
)))
1787 return dev
->ethtool_ops
->set_pauseparam(dev
, &pauseparam
);
1790 static int ethtool_self_test(struct net_device
*dev
, char __user
*useraddr
)
1792 struct ethtool_test test
;
1793 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1797 if (!ops
->self_test
|| !ops
->get_sset_count
)
1800 test_len
= ops
->get_sset_count(dev
, ETH_SS_TEST
);
1803 WARN_ON(test_len
== 0);
1805 if (copy_from_user(&test
, useraddr
, sizeof(test
)))
1808 test
.len
= test_len
;
1809 data
= kmalloc(test_len
* sizeof(u64
), GFP_USER
);
1813 ops
->self_test(dev
, &test
, data
);
1816 if (copy_to_user(useraddr
, &test
, sizeof(test
)))
1818 useraddr
+= sizeof(test
);
1819 if (copy_to_user(useraddr
, data
, test
.len
* sizeof(u64
)))
1828 static int ethtool_get_strings(struct net_device
*dev
, void __user
*useraddr
)
1830 struct ethtool_gstrings gstrings
;
1834 if (copy_from_user(&gstrings
, useraddr
, sizeof(gstrings
)))
1837 ret
= __ethtool_get_sset_count(dev
, gstrings
.string_set
);
1840 if (ret
> S32_MAX
/ ETH_GSTRING_LEN
)
1845 data
= vzalloc(gstrings
.len
* ETH_GSTRING_LEN
);
1846 if (gstrings
.len
&& !data
)
1849 __ethtool_get_strings(dev
, gstrings
.string_set
, data
);
1852 if (copy_to_user(useraddr
, &gstrings
, sizeof(gstrings
)))
1854 useraddr
+= sizeof(gstrings
);
1856 copy_to_user(useraddr
, data
, gstrings
.len
* ETH_GSTRING_LEN
))
1865 static int ethtool_phys_id(struct net_device
*dev
, void __user
*useraddr
)
1867 struct ethtool_value id
;
1869 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1872 if (!ops
->set_phys_id
)
1878 if (copy_from_user(&id
, useraddr
, sizeof(id
)))
1881 rc
= ops
->set_phys_id(dev
, ETHTOOL_ID_ACTIVE
);
1885 /* Drop the RTNL lock while waiting, but prevent reentry or
1886 * removal of the device.
1893 /* Driver will handle this itself */
1894 schedule_timeout_interruptible(
1895 id
.data
? (id
.data
* HZ
) : MAX_SCHEDULE_TIMEOUT
);
1897 /* Driver expects to be called at twice the frequency in rc */
1898 int n
= rc
* 2, i
, interval
= HZ
/ n
;
1900 /* Count down seconds */
1902 /* Count down iterations per second */
1906 rc
= ops
->set_phys_id(dev
,
1907 (i
& 1) ? ETHTOOL_ID_OFF
: ETHTOOL_ID_ON
);
1911 schedule_timeout_interruptible(interval
);
1912 } while (!signal_pending(current
) && --i
!= 0);
1913 } while (!signal_pending(current
) &&
1914 (id
.data
== 0 || --id
.data
!= 0));
1921 (void) ops
->set_phys_id(dev
, ETHTOOL_ID_INACTIVE
);
1925 static int ethtool_get_stats(struct net_device
*dev
, void __user
*useraddr
)
1927 struct ethtool_stats stats
;
1928 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1932 if (!ops
->get_ethtool_stats
|| !ops
->get_sset_count
)
1935 n_stats
= ops
->get_sset_count(dev
, ETH_SS_STATS
);
1938 if (n_stats
> S32_MAX
/ sizeof(u64
))
1940 WARN_ON_ONCE(!n_stats
);
1941 if (copy_from_user(&stats
, useraddr
, sizeof(stats
)))
1944 stats
.n_stats
= n_stats
;
1945 data
= vzalloc(n_stats
* sizeof(u64
));
1946 if (n_stats
&& !data
)
1949 ops
->get_ethtool_stats(dev
, &stats
, data
);
1952 if (copy_to_user(useraddr
, &stats
, sizeof(stats
)))
1954 useraddr
+= sizeof(stats
);
1955 if (n_stats
&& copy_to_user(useraddr
, data
, n_stats
* sizeof(u64
)))
1964 static int ethtool_get_phy_stats(struct net_device
*dev
, void __user
*useraddr
)
1966 struct ethtool_stats stats
;
1967 struct phy_device
*phydev
= dev
->phydev
;
1974 n_stats
= phy_get_sset_count(phydev
);
1977 if (n_stats
> S32_MAX
/ sizeof(u64
))
1979 WARN_ON_ONCE(!n_stats
);
1981 if (copy_from_user(&stats
, useraddr
, sizeof(stats
)))
1984 stats
.n_stats
= n_stats
;
1985 data
= vzalloc(n_stats
* sizeof(u64
));
1986 if (n_stats
&& !data
)
1989 mutex_lock(&phydev
->lock
);
1990 phydev
->drv
->get_stats(phydev
, &stats
, data
);
1991 mutex_unlock(&phydev
->lock
);
1994 if (copy_to_user(useraddr
, &stats
, sizeof(stats
)))
1996 useraddr
+= sizeof(stats
);
1997 if (n_stats
&& copy_to_user(useraddr
, data
, n_stats
* sizeof(u64
)))
2006 static int ethtool_get_perm_addr(struct net_device
*dev
, void __user
*useraddr
)
2008 struct ethtool_perm_addr epaddr
;
2010 if (copy_from_user(&epaddr
, useraddr
, sizeof(epaddr
)))
2013 if (epaddr
.size
< dev
->addr_len
)
2015 epaddr
.size
= dev
->addr_len
;
2017 if (copy_to_user(useraddr
, &epaddr
, sizeof(epaddr
)))
2019 useraddr
+= sizeof(epaddr
);
2020 if (copy_to_user(useraddr
, dev
->perm_addr
, epaddr
.size
))
2025 static int ethtool_get_value(struct net_device
*dev
, char __user
*useraddr
,
2026 u32 cmd
, u32 (*actor
)(struct net_device
*))
2028 struct ethtool_value edata
= { .cmd
= cmd
};
2033 edata
.data
= actor(dev
);
2035 if (copy_to_user(useraddr
, &edata
, sizeof(edata
)))
2040 static int ethtool_set_value_void(struct net_device
*dev
, char __user
*useraddr
,
2041 void (*actor
)(struct net_device
*, u32
))
2043 struct ethtool_value edata
;
2048 if (copy_from_user(&edata
, useraddr
, sizeof(edata
)))
2051 actor(dev
, edata
.data
);
2055 static int ethtool_set_value(struct net_device
*dev
, char __user
*useraddr
,
2056 int (*actor
)(struct net_device
*, u32
))
2058 struct ethtool_value edata
;
2063 if (copy_from_user(&edata
, useraddr
, sizeof(edata
)))
2066 return actor(dev
, edata
.data
);
2069 static noinline_for_stack
int ethtool_flash_device(struct net_device
*dev
,
2070 char __user
*useraddr
)
2072 struct ethtool_flash efl
;
2074 if (copy_from_user(&efl
, useraddr
, sizeof(efl
)))
2077 if (!dev
->ethtool_ops
->flash_device
)
2080 efl
.data
[ETHTOOL_FLASH_MAX_FILENAME
- 1] = 0;
2082 return dev
->ethtool_ops
->flash_device(dev
, &efl
);
2085 static int ethtool_set_dump(struct net_device
*dev
,
2086 void __user
*useraddr
)
2088 struct ethtool_dump dump
;
2090 if (!dev
->ethtool_ops
->set_dump
)
2093 if (copy_from_user(&dump
, useraddr
, sizeof(dump
)))
2096 return dev
->ethtool_ops
->set_dump(dev
, &dump
);
2099 static int ethtool_get_dump_flag(struct net_device
*dev
,
2100 void __user
*useraddr
)
2103 struct ethtool_dump dump
;
2104 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2106 if (!ops
->get_dump_flag
)
2109 if (copy_from_user(&dump
, useraddr
, sizeof(dump
)))
2112 ret
= ops
->get_dump_flag(dev
, &dump
);
2116 if (copy_to_user(useraddr
, &dump
, sizeof(dump
)))
2121 static int ethtool_get_dump_data(struct net_device
*dev
,
2122 void __user
*useraddr
)
2126 struct ethtool_dump dump
, tmp
;
2127 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2130 if (!ops
->get_dump_data
|| !ops
->get_dump_flag
)
2133 if (copy_from_user(&dump
, useraddr
, sizeof(dump
)))
2136 memset(&tmp
, 0, sizeof(tmp
));
2137 tmp
.cmd
= ETHTOOL_GET_DUMP_FLAG
;
2138 ret
= ops
->get_dump_flag(dev
, &tmp
);
2142 len
= min(tmp
.len
, dump
.len
);
2146 /* Don't ever let the driver think there's more space available
2147 * than it requested with .get_dump_flag().
2151 /* Always allocate enough space to hold the whole thing so that the
2152 * driver does not need to check the length and bother with partial
2155 data
= vzalloc(tmp
.len
);
2158 ret
= ops
->get_dump_data(dev
, &dump
, data
);
2162 /* There are two sane possibilities:
2163 * 1. The driver's .get_dump_data() does not touch dump.len.
2164 * 2. Or it may set dump.len to how much it really writes, which
2165 * should be tmp.len (or len if it can do a partial dump).
2166 * In any case respond to userspace with the actual length of data
2169 WARN_ON(dump
.len
!= len
&& dump
.len
!= tmp
.len
);
2172 if (copy_to_user(useraddr
, &dump
, sizeof(dump
))) {
2176 useraddr
+= offsetof(struct ethtool_dump
, data
);
2177 if (copy_to_user(useraddr
, data
, len
))
2184 static int ethtool_get_ts_info(struct net_device
*dev
, void __user
*useraddr
)
2187 struct ethtool_ts_info info
;
2188 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2189 struct phy_device
*phydev
= dev
->phydev
;
2191 memset(&info
, 0, sizeof(info
));
2192 info
.cmd
= ETHTOOL_GET_TS_INFO
;
2194 if (phydev
&& phydev
->drv
&& phydev
->drv
->ts_info
) {
2195 err
= phydev
->drv
->ts_info(phydev
, &info
);
2196 } else if (ops
->get_ts_info
) {
2197 err
= ops
->get_ts_info(dev
, &info
);
2199 info
.so_timestamping
=
2200 SOF_TIMESTAMPING_RX_SOFTWARE
|
2201 SOF_TIMESTAMPING_SOFTWARE
;
2202 info
.phc_index
= -1;
2208 if (copy_to_user(useraddr
, &info
, sizeof(info
)))
2214 static int __ethtool_get_module_info(struct net_device
*dev
,
2215 struct ethtool_modinfo
*modinfo
)
2217 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2218 struct phy_device
*phydev
= dev
->phydev
;
2220 if (phydev
&& phydev
->drv
&& phydev
->drv
->module_info
)
2221 return phydev
->drv
->module_info(phydev
, modinfo
);
2223 if (ops
->get_module_info
)
2224 return ops
->get_module_info(dev
, modinfo
);
2229 static int ethtool_get_module_info(struct net_device
*dev
,
2230 void __user
*useraddr
)
2233 struct ethtool_modinfo modinfo
;
2235 if (copy_from_user(&modinfo
, useraddr
, sizeof(modinfo
)))
2238 ret
= __ethtool_get_module_info(dev
, &modinfo
);
2242 if (copy_to_user(useraddr
, &modinfo
, sizeof(modinfo
)))
2248 static int __ethtool_get_module_eeprom(struct net_device
*dev
,
2249 struct ethtool_eeprom
*ee
, u8
*data
)
2251 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2252 struct phy_device
*phydev
= dev
->phydev
;
2254 if (phydev
&& phydev
->drv
&& phydev
->drv
->module_eeprom
)
2255 return phydev
->drv
->module_eeprom(phydev
, ee
, data
);
2257 if (ops
->get_module_eeprom
)
2258 return ops
->get_module_eeprom(dev
, ee
, data
);
2263 static int ethtool_get_module_eeprom(struct net_device
*dev
,
2264 void __user
*useraddr
)
2267 struct ethtool_modinfo modinfo
;
2269 ret
= __ethtool_get_module_info(dev
, &modinfo
);
2273 return ethtool_get_any_eeprom(dev
, useraddr
,
2274 __ethtool_get_module_eeprom
,
2275 modinfo
.eeprom_len
);
2278 static int ethtool_tunable_valid(const struct ethtool_tunable
*tuna
)
2281 case ETHTOOL_RX_COPYBREAK
:
2282 case ETHTOOL_TX_COPYBREAK
:
2283 if (tuna
->len
!= sizeof(u32
) ||
2284 tuna
->type_id
!= ETHTOOL_TUNABLE_U32
)
2294 static int ethtool_get_tunable(struct net_device
*dev
, void __user
*useraddr
)
2297 struct ethtool_tunable tuna
;
2298 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2301 if (!ops
->get_tunable
)
2303 if (copy_from_user(&tuna
, useraddr
, sizeof(tuna
)))
2305 ret
= ethtool_tunable_valid(&tuna
);
2308 data
= kmalloc(tuna
.len
, GFP_USER
);
2311 ret
= ops
->get_tunable(dev
, &tuna
, data
);
2314 useraddr
+= sizeof(tuna
);
2316 if (copy_to_user(useraddr
, data
, tuna
.len
))
2325 static int ethtool_set_tunable(struct net_device
*dev
, void __user
*useraddr
)
2328 struct ethtool_tunable tuna
;
2329 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2332 if (!ops
->set_tunable
)
2334 if (copy_from_user(&tuna
, useraddr
, sizeof(tuna
)))
2336 ret
= ethtool_tunable_valid(&tuna
);
2339 useraddr
+= sizeof(tuna
);
2340 data
= memdup_user(useraddr
, tuna
.len
);
2342 return PTR_ERR(data
);
2343 ret
= ops
->set_tunable(dev
, &tuna
, data
);
2349 static int ethtool_get_per_queue_coalesce(struct net_device
*dev
,
2350 void __user
*useraddr
,
2351 struct ethtool_per_queue_op
*per_queue_opt
)
2355 DECLARE_BITMAP(queue_mask
, MAX_NUM_QUEUE
);
2357 if (!dev
->ethtool_ops
->get_per_queue_coalesce
)
2360 useraddr
+= sizeof(*per_queue_opt
);
2362 bitmap_from_u32array(queue_mask
,
2364 per_queue_opt
->queue_mask
,
2365 DIV_ROUND_UP(MAX_NUM_QUEUE
, 32));
2367 for_each_set_bit(bit
, queue_mask
, MAX_NUM_QUEUE
) {
2368 struct ethtool_coalesce coalesce
= { .cmd
= ETHTOOL_GCOALESCE
};
2370 ret
= dev
->ethtool_ops
->get_per_queue_coalesce(dev
, bit
, &coalesce
);
2373 if (copy_to_user(useraddr
, &coalesce
, sizeof(coalesce
)))
2375 useraddr
+= sizeof(coalesce
);
2381 static int ethtool_set_per_queue_coalesce(struct net_device
*dev
,
2382 void __user
*useraddr
,
2383 struct ethtool_per_queue_op
*per_queue_opt
)
2388 struct ethtool_coalesce
*backup
= NULL
, *tmp
= NULL
;
2389 DECLARE_BITMAP(queue_mask
, MAX_NUM_QUEUE
);
2391 if ((!dev
->ethtool_ops
->set_per_queue_coalesce
) ||
2392 (!dev
->ethtool_ops
->get_per_queue_coalesce
))
2395 useraddr
+= sizeof(*per_queue_opt
);
2397 bitmap_from_u32array(queue_mask
,
2399 per_queue_opt
->queue_mask
,
2400 DIV_ROUND_UP(MAX_NUM_QUEUE
, 32));
2401 n_queue
= bitmap_weight(queue_mask
, MAX_NUM_QUEUE
);
2402 tmp
= backup
= kmalloc_array(n_queue
, sizeof(*backup
), GFP_KERNEL
);
2406 for_each_set_bit(bit
, queue_mask
, MAX_NUM_QUEUE
) {
2407 struct ethtool_coalesce coalesce
;
2409 ret
= dev
->ethtool_ops
->get_per_queue_coalesce(dev
, bit
, tmp
);
2415 if (copy_from_user(&coalesce
, useraddr
, sizeof(coalesce
))) {
2420 ret
= dev
->ethtool_ops
->set_per_queue_coalesce(dev
, bit
, &coalesce
);
2424 useraddr
+= sizeof(coalesce
);
2430 for_each_set_bit(i
, queue_mask
, bit
) {
2431 dev
->ethtool_ops
->set_per_queue_coalesce(dev
, i
, tmp
);
2440 static int ethtool_set_per_queue(struct net_device
*dev
, void __user
*useraddr
)
2442 struct ethtool_per_queue_op per_queue_opt
;
2444 if (copy_from_user(&per_queue_opt
, useraddr
, sizeof(per_queue_opt
)))
2447 switch (per_queue_opt
.sub_command
) {
2448 case ETHTOOL_GCOALESCE
:
2449 return ethtool_get_per_queue_coalesce(dev
, useraddr
, &per_queue_opt
);
2450 case ETHTOOL_SCOALESCE
:
2451 return ethtool_set_per_queue_coalesce(dev
, useraddr
, &per_queue_opt
);
2457 static int ethtool_phy_tunable_valid(const struct ethtool_tunable
*tuna
)
2460 case ETHTOOL_PHY_DOWNSHIFT
:
2461 if (tuna
->len
!= sizeof(u8
) ||
2462 tuna
->type_id
!= ETHTOOL_TUNABLE_U8
)
2472 static int get_phy_tunable(struct net_device
*dev
, void __user
*useraddr
)
2475 struct ethtool_tunable tuna
;
2476 struct phy_device
*phydev
= dev
->phydev
;
2479 if (!(phydev
&& phydev
->drv
&& phydev
->drv
->get_tunable
))
2482 if (copy_from_user(&tuna
, useraddr
, sizeof(tuna
)))
2484 ret
= ethtool_phy_tunable_valid(&tuna
);
2487 data
= kmalloc(tuna
.len
, GFP_USER
);
2490 mutex_lock(&phydev
->lock
);
2491 ret
= phydev
->drv
->get_tunable(phydev
, &tuna
, data
);
2492 mutex_unlock(&phydev
->lock
);
2495 useraddr
+= sizeof(tuna
);
2497 if (copy_to_user(useraddr
, data
, tuna
.len
))
2506 static int set_phy_tunable(struct net_device
*dev
, void __user
*useraddr
)
2509 struct ethtool_tunable tuna
;
2510 struct phy_device
*phydev
= dev
->phydev
;
2513 if (!(phydev
&& phydev
->drv
&& phydev
->drv
->set_tunable
))
2515 if (copy_from_user(&tuna
, useraddr
, sizeof(tuna
)))
2517 ret
= ethtool_phy_tunable_valid(&tuna
);
2520 useraddr
+= sizeof(tuna
);
2521 data
= memdup_user(useraddr
, tuna
.len
);
2523 return PTR_ERR(data
);
2524 mutex_lock(&phydev
->lock
);
2525 ret
= phydev
->drv
->set_tunable(phydev
, &tuna
, data
);
2526 mutex_unlock(&phydev
->lock
);
2532 static int ethtool_get_fecparam(struct net_device
*dev
, void __user
*useraddr
)
2534 struct ethtool_fecparam fecparam
= { ETHTOOL_GFECPARAM
};
2536 if (!dev
->ethtool_ops
->get_fecparam
)
2539 dev
->ethtool_ops
->get_fecparam(dev
, &fecparam
);
2541 if (copy_to_user(useraddr
, &fecparam
, sizeof(fecparam
)))
2546 static int ethtool_set_fecparam(struct net_device
*dev
, void __user
*useraddr
)
2548 struct ethtool_fecparam fecparam
;
2550 if (!dev
->ethtool_ops
->set_fecparam
)
2553 if (copy_from_user(&fecparam
, useraddr
, sizeof(fecparam
)))
2556 return dev
->ethtool_ops
->set_fecparam(dev
, &fecparam
);
2559 /* The main entry point in this file. Called from net/core/dev_ioctl.c */
2561 int dev_ethtool(struct net
*net
, struct ifreq
*ifr
)
2563 struct net_device
*dev
= __dev_get_by_name(net
, ifr
->ifr_name
);
2564 void __user
*useraddr
= ifr
->ifr_data
;
2565 u32 ethcmd
, sub_cmd
;
2567 netdev_features_t old_features
;
2569 if (!dev
|| !netif_device_present(dev
))
2572 if (copy_from_user(ðcmd
, useraddr
, sizeof(ethcmd
)))
2575 if (ethcmd
== ETHTOOL_PERQUEUE
) {
2576 if (copy_from_user(&sub_cmd
, useraddr
+ sizeof(ethcmd
), sizeof(sub_cmd
)))
2581 /* Allow some commands to be done by anyone */
2584 case ETHTOOL_GDRVINFO
:
2585 case ETHTOOL_GMSGLVL
:
2587 case ETHTOOL_GCOALESCE
:
2588 case ETHTOOL_GRINGPARAM
:
2589 case ETHTOOL_GPAUSEPARAM
:
2590 case ETHTOOL_GRXCSUM
:
2591 case ETHTOOL_GTXCSUM
:
2593 case ETHTOOL_GSSET_INFO
:
2594 case ETHTOOL_GSTRINGS
:
2595 case ETHTOOL_GSTATS
:
2596 case ETHTOOL_GPHYSTATS
:
2598 case ETHTOOL_GPERMADDR
:
2601 case ETHTOOL_GFLAGS
:
2602 case ETHTOOL_GPFLAGS
:
2604 case ETHTOOL_GRXRINGS
:
2605 case ETHTOOL_GRXCLSRLCNT
:
2606 case ETHTOOL_GRXCLSRULE
:
2607 case ETHTOOL_GRXCLSRLALL
:
2608 case ETHTOOL_GRXFHINDIR
:
2610 case ETHTOOL_GFEATURES
:
2611 case ETHTOOL_GCHANNELS
:
2612 case ETHTOOL_GET_TS_INFO
:
2614 case ETHTOOL_GTUNABLE
:
2615 case ETHTOOL_PHY_GTUNABLE
:
2616 case ETHTOOL_GLINKSETTINGS
:
2617 case ETHTOOL_GFECPARAM
:
2620 if (!ns_capable(net
->user_ns
, CAP_NET_ADMIN
))
2624 if (dev
->ethtool_ops
->begin
) {
2625 rc
= dev
->ethtool_ops
->begin(dev
);
2629 old_features
= dev
->features
;
2633 rc
= ethtool_get_settings(dev
, useraddr
);
2636 rc
= ethtool_set_settings(dev
, useraddr
);
2638 case ETHTOOL_GDRVINFO
:
2639 rc
= ethtool_get_drvinfo(dev
, useraddr
);
2642 rc
= ethtool_get_regs(dev
, useraddr
);
2645 rc
= ethtool_get_wol(dev
, useraddr
);
2648 rc
= ethtool_set_wol(dev
, useraddr
);
2650 case ETHTOOL_GMSGLVL
:
2651 rc
= ethtool_get_value(dev
, useraddr
, ethcmd
,
2652 dev
->ethtool_ops
->get_msglevel
);
2654 case ETHTOOL_SMSGLVL
:
2655 rc
= ethtool_set_value_void(dev
, useraddr
,
2656 dev
->ethtool_ops
->set_msglevel
);
2659 rc
= ethtool_get_eee(dev
, useraddr
);
2662 rc
= ethtool_set_eee(dev
, useraddr
);
2664 case ETHTOOL_NWAY_RST
:
2665 rc
= ethtool_nway_reset(dev
);
2668 rc
= ethtool_get_link(dev
, useraddr
);
2670 case ETHTOOL_GEEPROM
:
2671 rc
= ethtool_get_eeprom(dev
, useraddr
);
2673 case ETHTOOL_SEEPROM
:
2674 rc
= ethtool_set_eeprom(dev
, useraddr
);
2676 case ETHTOOL_GCOALESCE
:
2677 rc
= ethtool_get_coalesce(dev
, useraddr
);
2679 case ETHTOOL_SCOALESCE
:
2680 rc
= ethtool_set_coalesce(dev
, useraddr
);
2682 case ETHTOOL_GRINGPARAM
:
2683 rc
= ethtool_get_ringparam(dev
, useraddr
);
2685 case ETHTOOL_SRINGPARAM
:
2686 rc
= ethtool_set_ringparam(dev
, useraddr
);
2688 case ETHTOOL_GPAUSEPARAM
:
2689 rc
= ethtool_get_pauseparam(dev
, useraddr
);
2691 case ETHTOOL_SPAUSEPARAM
:
2692 rc
= ethtool_set_pauseparam(dev
, useraddr
);
2695 rc
= ethtool_self_test(dev
, useraddr
);
2697 case ETHTOOL_GSTRINGS
:
2698 rc
= ethtool_get_strings(dev
, useraddr
);
2700 case ETHTOOL_PHYS_ID
:
2701 rc
= ethtool_phys_id(dev
, useraddr
);
2703 case ETHTOOL_GSTATS
:
2704 rc
= ethtool_get_stats(dev
, useraddr
);
2706 case ETHTOOL_GPERMADDR
:
2707 rc
= ethtool_get_perm_addr(dev
, useraddr
);
2709 case ETHTOOL_GFLAGS
:
2710 rc
= ethtool_get_value(dev
, useraddr
, ethcmd
,
2711 __ethtool_get_flags
);
2713 case ETHTOOL_SFLAGS
:
2714 rc
= ethtool_set_value(dev
, useraddr
, __ethtool_set_flags
);
2716 case ETHTOOL_GPFLAGS
:
2717 rc
= ethtool_get_value(dev
, useraddr
, ethcmd
,
2718 dev
->ethtool_ops
->get_priv_flags
);
2720 case ETHTOOL_SPFLAGS
:
2721 rc
= ethtool_set_value(dev
, useraddr
,
2722 dev
->ethtool_ops
->set_priv_flags
);
2725 case ETHTOOL_GRXRINGS
:
2726 case ETHTOOL_GRXCLSRLCNT
:
2727 case ETHTOOL_GRXCLSRULE
:
2728 case ETHTOOL_GRXCLSRLALL
:
2729 rc
= ethtool_get_rxnfc(dev
, ethcmd
, useraddr
);
2732 case ETHTOOL_SRXCLSRLDEL
:
2733 case ETHTOOL_SRXCLSRLINS
:
2734 rc
= ethtool_set_rxnfc(dev
, ethcmd
, useraddr
);
2736 case ETHTOOL_FLASHDEV
:
2737 rc
= ethtool_flash_device(dev
, useraddr
);
2740 rc
= ethtool_reset(dev
, useraddr
);
2742 case ETHTOOL_GSSET_INFO
:
2743 rc
= ethtool_get_sset_info(dev
, useraddr
);
2745 case ETHTOOL_GRXFHINDIR
:
2746 rc
= ethtool_get_rxfh_indir(dev
, useraddr
);
2748 case ETHTOOL_SRXFHINDIR
:
2749 rc
= ethtool_set_rxfh_indir(dev
, useraddr
);
2752 rc
= ethtool_get_rxfh(dev
, useraddr
);
2755 rc
= ethtool_set_rxfh(dev
, useraddr
);
2757 case ETHTOOL_GFEATURES
:
2758 rc
= ethtool_get_features(dev
, useraddr
);
2760 case ETHTOOL_SFEATURES
:
2761 rc
= ethtool_set_features(dev
, useraddr
);
2763 case ETHTOOL_GTXCSUM
:
2764 case ETHTOOL_GRXCSUM
:
2769 rc
= ethtool_get_one_feature(dev
, useraddr
, ethcmd
);
2771 case ETHTOOL_STXCSUM
:
2772 case ETHTOOL_SRXCSUM
:
2777 rc
= ethtool_set_one_feature(dev
, useraddr
, ethcmd
);
2779 case ETHTOOL_GCHANNELS
:
2780 rc
= ethtool_get_channels(dev
, useraddr
);
2782 case ETHTOOL_SCHANNELS
:
2783 rc
= ethtool_set_channels(dev
, useraddr
);
2785 case ETHTOOL_SET_DUMP
:
2786 rc
= ethtool_set_dump(dev
, useraddr
);
2788 case ETHTOOL_GET_DUMP_FLAG
:
2789 rc
= ethtool_get_dump_flag(dev
, useraddr
);
2791 case ETHTOOL_GET_DUMP_DATA
:
2792 rc
= ethtool_get_dump_data(dev
, useraddr
);
2794 case ETHTOOL_GET_TS_INFO
:
2795 rc
= ethtool_get_ts_info(dev
, useraddr
);
2797 case ETHTOOL_GMODULEINFO
:
2798 rc
= ethtool_get_module_info(dev
, useraddr
);
2800 case ETHTOOL_GMODULEEEPROM
:
2801 rc
= ethtool_get_module_eeprom(dev
, useraddr
);
2803 case ETHTOOL_GTUNABLE
:
2804 rc
= ethtool_get_tunable(dev
, useraddr
);
2806 case ETHTOOL_STUNABLE
:
2807 rc
= ethtool_set_tunable(dev
, useraddr
);
2809 case ETHTOOL_GPHYSTATS
:
2810 rc
= ethtool_get_phy_stats(dev
, useraddr
);
2812 case ETHTOOL_PERQUEUE
:
2813 rc
= ethtool_set_per_queue(dev
, useraddr
);
2815 case ETHTOOL_GLINKSETTINGS
:
2816 rc
= ethtool_get_link_ksettings(dev
, useraddr
);
2818 case ETHTOOL_SLINKSETTINGS
:
2819 rc
= ethtool_set_link_ksettings(dev
, useraddr
);
2821 case ETHTOOL_PHY_GTUNABLE
:
2822 rc
= get_phy_tunable(dev
, useraddr
);
2824 case ETHTOOL_PHY_STUNABLE
:
2825 rc
= set_phy_tunable(dev
, useraddr
);
2827 case ETHTOOL_GFECPARAM
:
2828 rc
= ethtool_get_fecparam(dev
, useraddr
);
2830 case ETHTOOL_SFECPARAM
:
2831 rc
= ethtool_set_fecparam(dev
, useraddr
);
2837 if (dev
->ethtool_ops
->complete
)
2838 dev
->ethtool_ops
->complete(dev
);
2840 if (old_features
!= dev
->features
)
2841 netdev_features_change(dev
);