2 * net/core/ethtool.c - Ethtool ioctl handler
3 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx>
5 * This file is where we call all the ethtool_ops commands to get
6 * the information ethtool needs.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
14 #include <linux/module.h>
15 #include <linux/types.h>
16 #include <linux/capability.h>
17 #include <linux/errno.h>
18 #include <linux/ethtool.h>
19 #include <linux/netdevice.h>
20 #include <linux/net_tstamp.h>
21 #include <linux/phy.h>
22 #include <linux/bitops.h>
23 #include <linux/uaccess.h>
24 #include <linux/vmalloc.h>
25 #include <linux/slab.h>
26 #include <linux/rtnetlink.h>
27 #include <linux/sched.h>
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_UFO_BIT
] = "tx-udp-fragmentation",
80 [NETIF_F_GSO_ROBUST_BIT
] = "tx-gso-robust",
81 [NETIF_F_TSO_ECN_BIT
] = "tx-tcp-ecn-segmentation",
82 [NETIF_F_TSO_MANGLEID_BIT
] = "tx-tcp-mangleid-segmentation",
83 [NETIF_F_TSO6_BIT
] = "tx-tcp6-segmentation",
84 [NETIF_F_FSO_BIT
] = "tx-fcoe-segmentation",
85 [NETIF_F_GSO_GRE_BIT
] = "tx-gre-segmentation",
86 [NETIF_F_GSO_GRE_CSUM_BIT
] = "tx-gre-csum-segmentation",
87 [NETIF_F_GSO_IPIP_BIT
] = "tx-ipip-segmentation",
88 [NETIF_F_GSO_SIT_BIT
] = "tx-sit-segmentation",
89 [NETIF_F_GSO_UDP_TUNNEL_BIT
] = "tx-udp_tnl-segmentation",
90 [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT
] = "tx-udp_tnl-csum-segmentation",
92 [NETIF_F_FCOE_CRC_BIT
] = "tx-checksum-fcoe-crc",
93 [NETIF_F_SCTP_CRC_BIT
] = "tx-checksum-sctp",
94 [NETIF_F_FCOE_MTU_BIT
] = "fcoe-mtu",
95 [NETIF_F_NTUPLE_BIT
] = "rx-ntuple-filter",
96 [NETIF_F_RXHASH_BIT
] = "rx-hashing",
97 [NETIF_F_RXCSUM_BIT
] = "rx-checksum",
98 [NETIF_F_NOCACHE_COPY_BIT
] = "tx-nocache-copy",
99 [NETIF_F_LOOPBACK_BIT
] = "loopback",
100 [NETIF_F_RXFCS_BIT
] = "rx-fcs",
101 [NETIF_F_RXALL_BIT
] = "rx-all",
102 [NETIF_F_HW_L2FW_DOFFLOAD_BIT
] = "l2-fwd-offload",
103 [NETIF_F_BUSY_POLL_BIT
] = "busy-poll",
104 [NETIF_F_HW_TC_BIT
] = "hw-tc-offload",
108 rss_hash_func_strings
[ETH_RSS_HASH_FUNCS_COUNT
][ETH_GSTRING_LEN
] = {
109 [ETH_RSS_HASH_TOP_BIT
] = "toeplitz",
110 [ETH_RSS_HASH_XOR_BIT
] = "xor",
114 tunable_strings
[__ETHTOOL_TUNABLE_COUNT
][ETH_GSTRING_LEN
] = {
115 [ETHTOOL_ID_UNSPEC
] = "Unspec",
116 [ETHTOOL_RX_COPYBREAK
] = "rx-copybreak",
117 [ETHTOOL_TX_COPYBREAK
] = "tx-copybreak",
120 static int ethtool_get_features(struct net_device
*dev
, void __user
*useraddr
)
122 struct ethtool_gfeatures cmd
= {
123 .cmd
= ETHTOOL_GFEATURES
,
124 .size
= ETHTOOL_DEV_FEATURE_WORDS
,
126 struct ethtool_get_features_block features
[ETHTOOL_DEV_FEATURE_WORDS
];
127 u32 __user
*sizeaddr
;
131 /* in case feature bits run out again */
132 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS
* sizeof(u32
) > sizeof(netdev_features_t
));
134 for (i
= 0; i
< ETHTOOL_DEV_FEATURE_WORDS
; ++i
) {
135 features
[i
].available
= (u32
)(dev
->hw_features
>> (32 * i
));
136 features
[i
].requested
= (u32
)(dev
->wanted_features
>> (32 * i
));
137 features
[i
].active
= (u32
)(dev
->features
>> (32 * i
));
138 features
[i
].never_changed
=
139 (u32
)(NETIF_F_NEVER_CHANGE
>> (32 * i
));
142 sizeaddr
= useraddr
+ offsetof(struct ethtool_gfeatures
, size
);
143 if (get_user(copy_size
, sizeaddr
))
146 if (copy_size
> ETHTOOL_DEV_FEATURE_WORDS
)
147 copy_size
= ETHTOOL_DEV_FEATURE_WORDS
;
149 if (copy_to_user(useraddr
, &cmd
, sizeof(cmd
)))
151 useraddr
+= sizeof(cmd
);
152 if (copy_to_user(useraddr
, features
, copy_size
* sizeof(*features
)))
158 static int ethtool_set_features(struct net_device
*dev
, void __user
*useraddr
)
160 struct ethtool_sfeatures cmd
;
161 struct ethtool_set_features_block features
[ETHTOOL_DEV_FEATURE_WORDS
];
162 netdev_features_t wanted
= 0, valid
= 0;
165 if (copy_from_user(&cmd
, useraddr
, sizeof(cmd
)))
167 useraddr
+= sizeof(cmd
);
169 if (cmd
.size
!= ETHTOOL_DEV_FEATURE_WORDS
)
172 if (copy_from_user(features
, useraddr
, sizeof(features
)))
175 for (i
= 0; i
< ETHTOOL_DEV_FEATURE_WORDS
; ++i
) {
176 valid
|= (netdev_features_t
)features
[i
].valid
<< (32 * i
);
177 wanted
|= (netdev_features_t
)features
[i
].requested
<< (32 * i
);
180 if (valid
& ~NETIF_F_ETHTOOL_BITS
)
183 if (valid
& ~dev
->hw_features
) {
184 valid
&= dev
->hw_features
;
185 ret
|= ETHTOOL_F_UNSUPPORTED
;
188 dev
->wanted_features
&= ~valid
;
189 dev
->wanted_features
|= wanted
& valid
;
190 __netdev_update_features(dev
);
192 if ((dev
->wanted_features
^ dev
->features
) & valid
)
193 ret
|= ETHTOOL_F_WISH
;
198 static int phy_get_sset_count(struct phy_device
*phydev
)
202 if (phydev
->drv
->get_sset_count
&&
203 phydev
->drv
->get_strings
&&
204 phydev
->drv
->get_stats
) {
205 mutex_lock(&phydev
->lock
);
206 ret
= phydev
->drv
->get_sset_count(phydev
);
207 mutex_unlock(&phydev
->lock
);
215 static int __ethtool_get_sset_count(struct net_device
*dev
, int sset
)
217 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
219 if (sset
== ETH_SS_FEATURES
)
220 return ARRAY_SIZE(netdev_features_strings
);
222 if (sset
== ETH_SS_RSS_HASH_FUNCS
)
223 return ARRAY_SIZE(rss_hash_func_strings
);
225 if (sset
== ETH_SS_TUNABLES
)
226 return ARRAY_SIZE(tunable_strings
);
228 if (sset
== ETH_SS_PHY_STATS
) {
230 return phy_get_sset_count(dev
->phydev
);
235 if (ops
->get_sset_count
&& ops
->get_strings
)
236 return ops
->get_sset_count(dev
, sset
);
241 static void __ethtool_get_strings(struct net_device
*dev
,
242 u32 stringset
, u8
*data
)
244 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
246 if (stringset
== ETH_SS_FEATURES
)
247 memcpy(data
, netdev_features_strings
,
248 sizeof(netdev_features_strings
));
249 else if (stringset
== ETH_SS_RSS_HASH_FUNCS
)
250 memcpy(data
, rss_hash_func_strings
,
251 sizeof(rss_hash_func_strings
));
252 else if (stringset
== ETH_SS_TUNABLES
)
253 memcpy(data
, tunable_strings
, sizeof(tunable_strings
));
254 else if (stringset
== ETH_SS_PHY_STATS
) {
255 struct phy_device
*phydev
= dev
->phydev
;
258 mutex_lock(&phydev
->lock
);
259 phydev
->drv
->get_strings(phydev
, data
);
260 mutex_unlock(&phydev
->lock
);
265 /* ops->get_strings is valid because checked earlier */
266 ops
->get_strings(dev
, stringset
, data
);
269 static netdev_features_t
ethtool_get_feature_mask(u32 eth_cmd
)
271 /* feature masks of legacy discrete ethtool ops */
274 case ETHTOOL_GTXCSUM
:
275 case ETHTOOL_STXCSUM
:
276 return NETIF_F_CSUM_MASK
| NETIF_F_SCTP_CRC
;
277 case ETHTOOL_GRXCSUM
:
278 case ETHTOOL_SRXCSUM
:
279 return NETIF_F_RXCSUM
;
285 return NETIF_F_ALL_TSO
;
300 static int ethtool_get_one_feature(struct net_device
*dev
,
301 char __user
*useraddr
, u32 ethcmd
)
303 netdev_features_t mask
= ethtool_get_feature_mask(ethcmd
);
304 struct ethtool_value edata
= {
306 .data
= !!(dev
->features
& mask
),
309 if (copy_to_user(useraddr
, &edata
, sizeof(edata
)))
314 static int ethtool_set_one_feature(struct net_device
*dev
,
315 void __user
*useraddr
, u32 ethcmd
)
317 struct ethtool_value edata
;
318 netdev_features_t mask
;
320 if (copy_from_user(&edata
, useraddr
, sizeof(edata
)))
323 mask
= ethtool_get_feature_mask(ethcmd
);
324 mask
&= dev
->hw_features
;
329 dev
->wanted_features
|= mask
;
331 dev
->wanted_features
&= ~mask
;
333 __netdev_update_features(dev
);
338 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
339 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
340 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
341 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
344 static u32
__ethtool_get_flags(struct net_device
*dev
)
348 if (dev
->features
& NETIF_F_LRO
)
349 flags
|= ETH_FLAG_LRO
;
350 if (dev
->features
& NETIF_F_HW_VLAN_CTAG_RX
)
351 flags
|= ETH_FLAG_RXVLAN
;
352 if (dev
->features
& NETIF_F_HW_VLAN_CTAG_TX
)
353 flags
|= ETH_FLAG_TXVLAN
;
354 if (dev
->features
& NETIF_F_NTUPLE
)
355 flags
|= ETH_FLAG_NTUPLE
;
356 if (dev
->features
& NETIF_F_RXHASH
)
357 flags
|= ETH_FLAG_RXHASH
;
362 static int __ethtool_set_flags(struct net_device
*dev
, u32 data
)
364 netdev_features_t features
= 0, changed
;
366 if (data
& ~ETH_ALL_FLAGS
)
369 if (data
& ETH_FLAG_LRO
)
370 features
|= NETIF_F_LRO
;
371 if (data
& ETH_FLAG_RXVLAN
)
372 features
|= NETIF_F_HW_VLAN_CTAG_RX
;
373 if (data
& ETH_FLAG_TXVLAN
)
374 features
|= NETIF_F_HW_VLAN_CTAG_TX
;
375 if (data
& ETH_FLAG_NTUPLE
)
376 features
|= NETIF_F_NTUPLE
;
377 if (data
& ETH_FLAG_RXHASH
)
378 features
|= NETIF_F_RXHASH
;
380 /* allow changing only bits set in hw_features */
381 changed
= (features
^ dev
->features
) & ETH_ALL_FEATURES
;
382 if (changed
& ~dev
->hw_features
)
383 return (changed
& dev
->hw_features
) ? -EINVAL
: -EOPNOTSUPP
;
385 dev
->wanted_features
=
386 (dev
->wanted_features
& ~changed
) | (features
& changed
);
388 __netdev_update_features(dev
);
393 static void convert_legacy_u32_to_link_mode(unsigned long *dst
, u32 legacy_u32
)
395 bitmap_zero(dst
, __ETHTOOL_LINK_MODE_MASK_NBITS
);
399 /* return false if src had higher bits set. lower bits always updated. */
400 static bool convert_link_mode_to_legacy_u32(u32
*legacy_u32
,
401 const unsigned long *src
)
405 /* TODO: following test will soon always be true */
406 if (__ETHTOOL_LINK_MODE_MASK_NBITS
> 32) {
407 __ETHTOOL_DECLARE_LINK_MODE_MASK(ext
);
409 bitmap_zero(ext
, __ETHTOOL_LINK_MODE_MASK_NBITS
);
410 bitmap_fill(ext
, 32);
411 bitmap_complement(ext
, ext
, __ETHTOOL_LINK_MODE_MASK_NBITS
);
412 if (bitmap_intersects(ext
, src
,
413 __ETHTOOL_LINK_MODE_MASK_NBITS
)) {
414 /* src mask goes beyond bit 31 */
418 *legacy_u32
= src
[0];
422 /* return false if legacy contained non-0 deprecated fields
423 * transceiver/maxtxpkt/maxrxpkt. rest of ksettings always updated
426 convert_legacy_settings_to_link_ksettings(
427 struct ethtool_link_ksettings
*link_ksettings
,
428 const struct ethtool_cmd
*legacy_settings
)
432 memset(link_ksettings
, 0, sizeof(*link_ksettings
));
434 /* This is used to tell users that driver is still using these
435 * deprecated legacy fields, and they should not use
436 * %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS
438 if (legacy_settings
->transceiver
||
439 legacy_settings
->maxtxpkt
||
440 legacy_settings
->maxrxpkt
)
443 convert_legacy_u32_to_link_mode(
444 link_ksettings
->link_modes
.supported
,
445 legacy_settings
->supported
);
446 convert_legacy_u32_to_link_mode(
447 link_ksettings
->link_modes
.advertising
,
448 legacy_settings
->advertising
);
449 convert_legacy_u32_to_link_mode(
450 link_ksettings
->link_modes
.lp_advertising
,
451 legacy_settings
->lp_advertising
);
452 link_ksettings
->base
.speed
453 = ethtool_cmd_speed(legacy_settings
);
454 link_ksettings
->base
.duplex
455 = legacy_settings
->duplex
;
456 link_ksettings
->base
.port
457 = legacy_settings
->port
;
458 link_ksettings
->base
.phy_address
459 = legacy_settings
->phy_address
;
460 link_ksettings
->base
.autoneg
461 = legacy_settings
->autoneg
;
462 link_ksettings
->base
.mdio_support
463 = legacy_settings
->mdio_support
;
464 link_ksettings
->base
.eth_tp_mdix
465 = legacy_settings
->eth_tp_mdix
;
466 link_ksettings
->base
.eth_tp_mdix_ctrl
467 = legacy_settings
->eth_tp_mdix_ctrl
;
471 /* return false if ksettings link modes had higher bits
472 * set. legacy_settings always updated (best effort)
475 convert_link_ksettings_to_legacy_settings(
476 struct ethtool_cmd
*legacy_settings
,
477 const struct ethtool_link_ksettings
*link_ksettings
)
481 memset(legacy_settings
, 0, sizeof(*legacy_settings
));
482 /* this also clears the deprecated fields in legacy structure:
488 retval
&= convert_link_mode_to_legacy_u32(
489 &legacy_settings
->supported
,
490 link_ksettings
->link_modes
.supported
);
491 retval
&= convert_link_mode_to_legacy_u32(
492 &legacy_settings
->advertising
,
493 link_ksettings
->link_modes
.advertising
);
494 retval
&= convert_link_mode_to_legacy_u32(
495 &legacy_settings
->lp_advertising
,
496 link_ksettings
->link_modes
.lp_advertising
);
497 ethtool_cmd_speed_set(legacy_settings
, link_ksettings
->base
.speed
);
498 legacy_settings
->duplex
499 = link_ksettings
->base
.duplex
;
500 legacy_settings
->port
501 = link_ksettings
->base
.port
;
502 legacy_settings
->phy_address
503 = link_ksettings
->base
.phy_address
;
504 legacy_settings
->autoneg
505 = link_ksettings
->base
.autoneg
;
506 legacy_settings
->mdio_support
507 = link_ksettings
->base
.mdio_support
;
508 legacy_settings
->eth_tp_mdix
509 = link_ksettings
->base
.eth_tp_mdix
;
510 legacy_settings
->eth_tp_mdix_ctrl
511 = link_ksettings
->base
.eth_tp_mdix_ctrl
;
515 /* number of 32-bit words to store the user's link mode bitmaps */
516 #define __ETHTOOL_LINK_MODE_MASK_NU32 \
517 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
519 /* layout of the struct passed from/to userland */
520 struct ethtool_link_usettings
{
521 struct ethtool_link_settings base
;
523 __u32 supported
[__ETHTOOL_LINK_MODE_MASK_NU32
];
524 __u32 advertising
[__ETHTOOL_LINK_MODE_MASK_NU32
];
525 __u32 lp_advertising
[__ETHTOOL_LINK_MODE_MASK_NU32
];
529 /* Internal kernel helper to query a device ethtool_link_settings.
531 * Backward compatibility note: for compatibility with legacy drivers
532 * that implement only the ethtool_cmd API, this has to work with both
533 * drivers implementing get_link_ksettings API and drivers
534 * implementing get_settings API. When drivers implement get_settings
535 * and report ethtool_cmd deprecated fields
536 * (transceiver/maxrxpkt/maxtxpkt), these fields are silently ignored
537 * because the resulting struct ethtool_link_settings does not report them.
539 int __ethtool_get_link_ksettings(struct net_device
*dev
,
540 struct ethtool_link_ksettings
*link_ksettings
)
543 struct ethtool_cmd cmd
;
547 if (dev
->ethtool_ops
->get_link_ksettings
) {
548 memset(link_ksettings
, 0, sizeof(*link_ksettings
));
549 return dev
->ethtool_ops
->get_link_ksettings(dev
,
553 /* driver doesn't support %ethtool_link_ksettings API. revert to
554 * legacy %ethtool_cmd API, unless it's not supported either.
555 * TODO: remove when ethtool_ops::get_settings disappears internally
557 if (!dev
->ethtool_ops
->get_settings
)
560 memset(&cmd
, 0, sizeof(cmd
));
561 cmd
.cmd
= ETHTOOL_GSET
;
562 err
= dev
->ethtool_ops
->get_settings(dev
, &cmd
);
566 /* we ignore deprecated fields transceiver/maxrxpkt/maxtxpkt
568 convert_legacy_settings_to_link_ksettings(link_ksettings
, &cmd
);
571 EXPORT_SYMBOL(__ethtool_get_link_ksettings
);
573 /* convert ethtool_link_usettings in user space to a kernel internal
574 * ethtool_link_ksettings. return 0 on success, errno on error.
576 static int load_link_ksettings_from_user(struct ethtool_link_ksettings
*to
,
577 const void __user
*from
)
579 struct ethtool_link_usettings link_usettings
;
581 if (copy_from_user(&link_usettings
, from
, sizeof(link_usettings
)))
584 memcpy(&to
->base
, &link_usettings
.base
, sizeof(to
->base
));
585 bitmap_from_u32array(to
->link_modes
.supported
,
586 __ETHTOOL_LINK_MODE_MASK_NBITS
,
587 link_usettings
.link_modes
.supported
,
588 __ETHTOOL_LINK_MODE_MASK_NU32
);
589 bitmap_from_u32array(to
->link_modes
.advertising
,
590 __ETHTOOL_LINK_MODE_MASK_NBITS
,
591 link_usettings
.link_modes
.advertising
,
592 __ETHTOOL_LINK_MODE_MASK_NU32
);
593 bitmap_from_u32array(to
->link_modes
.lp_advertising
,
594 __ETHTOOL_LINK_MODE_MASK_NBITS
,
595 link_usettings
.link_modes
.lp_advertising
,
596 __ETHTOOL_LINK_MODE_MASK_NU32
);
601 /* convert a kernel internal ethtool_link_ksettings to
602 * ethtool_link_usettings in user space. return 0 on success, errno on
606 store_link_ksettings_for_user(void __user
*to
,
607 const struct ethtool_link_ksettings
*from
)
609 struct ethtool_link_usettings link_usettings
;
611 memcpy(&link_usettings
.base
, &from
->base
, sizeof(link_usettings
));
612 bitmap_to_u32array(link_usettings
.link_modes
.supported
,
613 __ETHTOOL_LINK_MODE_MASK_NU32
,
614 from
->link_modes
.supported
,
615 __ETHTOOL_LINK_MODE_MASK_NBITS
);
616 bitmap_to_u32array(link_usettings
.link_modes
.advertising
,
617 __ETHTOOL_LINK_MODE_MASK_NU32
,
618 from
->link_modes
.advertising
,
619 __ETHTOOL_LINK_MODE_MASK_NBITS
);
620 bitmap_to_u32array(link_usettings
.link_modes
.lp_advertising
,
621 __ETHTOOL_LINK_MODE_MASK_NU32
,
622 from
->link_modes
.lp_advertising
,
623 __ETHTOOL_LINK_MODE_MASK_NBITS
);
625 if (copy_to_user(to
, &link_usettings
, sizeof(link_usettings
)))
631 /* Query device for its ethtool_link_settings.
633 * Backward compatibility note: this function must fail when driver
634 * does not implement ethtool::get_link_ksettings, even if legacy
635 * ethtool_ops::get_settings is implemented. This tells new versions
636 * of ethtool that they should use the legacy API %ETHTOOL_GSET for
637 * this driver, so that they can correctly access the ethtool_cmd
638 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
639 * implements ethtool_ops::get_settings anymore.
641 static int ethtool_get_link_ksettings(struct net_device
*dev
,
642 void __user
*useraddr
)
645 struct ethtool_link_ksettings link_ksettings
;
649 if (!dev
->ethtool_ops
->get_link_ksettings
)
652 /* handle bitmap nbits handshake */
653 if (copy_from_user(&link_ksettings
.base
, useraddr
,
654 sizeof(link_ksettings
.base
)))
657 if (__ETHTOOL_LINK_MODE_MASK_NU32
658 != link_ksettings
.base
.link_mode_masks_nwords
) {
659 /* wrong link mode nbits requested */
660 memset(&link_ksettings
, 0, sizeof(link_ksettings
));
661 link_ksettings
.base
.cmd
= ETHTOOL_GLINKSETTINGS
;
662 /* send back number of words required as negative val */
663 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32
<= S8_MAX
,
664 "need too many bits for link modes!");
665 link_ksettings
.base
.link_mode_masks_nwords
666 = -((s8
)__ETHTOOL_LINK_MODE_MASK_NU32
);
668 /* copy the base fields back to user, not the link
671 if (copy_to_user(useraddr
, &link_ksettings
.base
,
672 sizeof(link_ksettings
.base
)))
678 /* handshake successful: user/kernel agree on
679 * link_mode_masks_nwords
682 memset(&link_ksettings
, 0, sizeof(link_ksettings
));
683 err
= dev
->ethtool_ops
->get_link_ksettings(dev
, &link_ksettings
);
687 /* make sure we tell the right values to user */
688 link_ksettings
.base
.cmd
= ETHTOOL_GLINKSETTINGS
;
689 link_ksettings
.base
.link_mode_masks_nwords
690 = __ETHTOOL_LINK_MODE_MASK_NU32
;
692 return store_link_ksettings_for_user(useraddr
, &link_ksettings
);
695 /* Update device ethtool_link_settings.
697 * Backward compatibility note: this function must fail when driver
698 * does not implement ethtool::set_link_ksettings, even if legacy
699 * ethtool_ops::set_settings is implemented. This tells new versions
700 * of ethtool that they should use the legacy API %ETHTOOL_SSET for
701 * this driver, so that they can correctly update the ethtool_cmd
702 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
703 * implements ethtool_ops::get_settings anymore.
705 static int ethtool_set_link_ksettings(struct net_device
*dev
,
706 void __user
*useraddr
)
709 struct ethtool_link_ksettings link_ksettings
;
713 if (!dev
->ethtool_ops
->set_link_ksettings
)
716 /* make sure nbits field has expected value */
717 if (copy_from_user(&link_ksettings
.base
, useraddr
,
718 sizeof(link_ksettings
.base
)))
721 if (__ETHTOOL_LINK_MODE_MASK_NU32
722 != link_ksettings
.base
.link_mode_masks_nwords
)
725 /* copy the whole structure, now that we know it has expected
728 err
= load_link_ksettings_from_user(&link_ksettings
, useraddr
);
732 /* re-check nwords field, just in case */
733 if (__ETHTOOL_LINK_MODE_MASK_NU32
734 != link_ksettings
.base
.link_mode_masks_nwords
)
737 return dev
->ethtool_ops
->set_link_ksettings(dev
, &link_ksettings
);
741 warn_incomplete_ethtool_legacy_settings_conversion(const char *details
)
743 char name
[sizeof(current
->comm
)];
745 pr_info_once("warning: `%s' uses legacy ethtool link settings API, %s\n",
746 get_task_comm(name
, current
), details
);
749 /* Query device for its ethtool_cmd settings.
751 * Backward compatibility note: for compatibility with legacy ethtool,
752 * this has to work with both drivers implementing get_link_ksettings
753 * API and drivers implementing get_settings API. When drivers
754 * implement get_link_ksettings and report higher link mode bits, a
755 * kernel warning is logged once (with name of 1st driver/device) to
756 * recommend user to upgrade ethtool, but the command is successful
757 * (only the lower link mode bits reported back to user).
759 static int ethtool_get_settings(struct net_device
*dev
, void __user
*useraddr
)
761 struct ethtool_cmd cmd
;
765 if (dev
->ethtool_ops
->get_link_ksettings
) {
766 /* First, use link_ksettings API if it is supported */
768 struct ethtool_link_ksettings link_ksettings
;
770 memset(&link_ksettings
, 0, sizeof(link_ksettings
));
771 err
= dev
->ethtool_ops
->get_link_ksettings(dev
,
775 if (!convert_link_ksettings_to_legacy_settings(&cmd
,
777 warn_incomplete_ethtool_legacy_settings_conversion(
778 "link modes are only partially reported");
780 /* send a sensible cmd tag back to user */
781 cmd
.cmd
= ETHTOOL_GSET
;
783 /* driver doesn't support %ethtool_link_ksettings
784 * API. revert to legacy %ethtool_cmd API, unless it's
785 * not supported either.
789 if (!dev
->ethtool_ops
->get_settings
)
792 memset(&cmd
, 0, sizeof(cmd
));
793 cmd
.cmd
= ETHTOOL_GSET
;
794 err
= dev
->ethtool_ops
->get_settings(dev
, &cmd
);
799 if (copy_to_user(useraddr
, &cmd
, sizeof(cmd
)))
805 /* Update device link settings with given ethtool_cmd.
807 * Backward compatibility note: for compatibility with legacy ethtool,
808 * this has to work with both drivers implementing set_link_ksettings
809 * API and drivers implementing set_settings API. When drivers
810 * implement set_link_ksettings and user's request updates deprecated
811 * ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
812 * warning is logged once (with name of 1st driver/device) to
813 * recommend user to upgrade ethtool, and the request is rejected.
815 static int ethtool_set_settings(struct net_device
*dev
, void __user
*useraddr
)
817 struct ethtool_cmd cmd
;
821 if (copy_from_user(&cmd
, useraddr
, sizeof(cmd
)))
824 /* first, try new %ethtool_link_ksettings API. */
825 if (dev
->ethtool_ops
->set_link_ksettings
) {
826 struct ethtool_link_ksettings link_ksettings
;
828 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings
,
832 link_ksettings
.base
.cmd
= ETHTOOL_SLINKSETTINGS
;
833 link_ksettings
.base
.link_mode_masks_nwords
834 = __ETHTOOL_LINK_MODE_MASK_NU32
;
835 return dev
->ethtool_ops
->set_link_ksettings(dev
,
839 /* legacy %ethtool_cmd API */
841 /* TODO: return -EOPNOTSUPP when ethtool_ops::get_settings
842 * disappears internally
845 if (!dev
->ethtool_ops
->set_settings
)
848 return dev
->ethtool_ops
->set_settings(dev
, &cmd
);
851 static noinline_for_stack
int ethtool_get_drvinfo(struct net_device
*dev
,
852 void __user
*useraddr
)
854 struct ethtool_drvinfo info
;
855 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
857 memset(&info
, 0, sizeof(info
));
858 info
.cmd
= ETHTOOL_GDRVINFO
;
859 if (ops
->get_drvinfo
) {
860 ops
->get_drvinfo(dev
, &info
);
861 } else if (dev
->dev
.parent
&& dev
->dev
.parent
->driver
) {
862 strlcpy(info
.bus_info
, dev_name(dev
->dev
.parent
),
863 sizeof(info
.bus_info
));
864 strlcpy(info
.driver
, dev
->dev
.parent
->driver
->name
,
865 sizeof(info
.driver
));
871 * this method of obtaining string set info is deprecated;
872 * Use ETHTOOL_GSSET_INFO instead.
874 if (ops
->get_sset_count
) {
877 rc
= ops
->get_sset_count(dev
, ETH_SS_TEST
);
879 info
.testinfo_len
= rc
;
880 rc
= ops
->get_sset_count(dev
, ETH_SS_STATS
);
883 rc
= ops
->get_sset_count(dev
, ETH_SS_PRIV_FLAGS
);
885 info
.n_priv_flags
= rc
;
887 if (ops
->get_regs_len
)
888 info
.regdump_len
= ops
->get_regs_len(dev
);
889 if (ops
->get_eeprom_len
)
890 info
.eedump_len
= ops
->get_eeprom_len(dev
);
892 if (copy_to_user(useraddr
, &info
, sizeof(info
)))
897 static noinline_for_stack
int ethtool_get_sset_info(struct net_device
*dev
,
898 void __user
*useraddr
)
900 struct ethtool_sset_info info
;
902 int i
, idx
= 0, n_bits
= 0, ret
, rc
;
903 u32
*info_buf
= NULL
;
905 if (copy_from_user(&info
, useraddr
, sizeof(info
)))
908 /* store copy of mask, because we zero struct later on */
909 sset_mask
= info
.sset_mask
;
913 /* calculate size of return buffer */
914 n_bits
= hweight64(sset_mask
);
916 memset(&info
, 0, sizeof(info
));
917 info
.cmd
= ETHTOOL_GSSET_INFO
;
919 info_buf
= kzalloc(n_bits
* sizeof(u32
), GFP_USER
);
924 * fill return buffer based on input bitmask and successful
925 * get_sset_count return
927 for (i
= 0; i
< 64; i
++) {
928 if (!(sset_mask
& (1ULL << i
)))
931 rc
= __ethtool_get_sset_count(dev
, i
);
933 info
.sset_mask
|= (1ULL << i
);
934 info_buf
[idx
++] = rc
;
939 if (copy_to_user(useraddr
, &info
, sizeof(info
)))
942 useraddr
+= offsetof(struct ethtool_sset_info
, data
);
943 if (copy_to_user(useraddr
, info_buf
, idx
* sizeof(u32
)))
953 static noinline_for_stack
int ethtool_set_rxnfc(struct net_device
*dev
,
954 u32 cmd
, void __user
*useraddr
)
956 struct ethtool_rxnfc info
;
957 size_t info_size
= sizeof(info
);
960 if (!dev
->ethtool_ops
->set_rxnfc
)
963 /* struct ethtool_rxnfc was originally defined for
964 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
965 * members. User-space might still be using that
967 if (cmd
== ETHTOOL_SRXFH
)
968 info_size
= (offsetof(struct ethtool_rxnfc
, data
) +
971 if (copy_from_user(&info
, useraddr
, info_size
))
974 rc
= dev
->ethtool_ops
->set_rxnfc(dev
, &info
);
978 if (cmd
== ETHTOOL_SRXCLSRLINS
&&
979 copy_to_user(useraddr
, &info
, info_size
))
985 static noinline_for_stack
int ethtool_get_rxnfc(struct net_device
*dev
,
986 u32 cmd
, void __user
*useraddr
)
988 struct ethtool_rxnfc info
;
989 size_t info_size
= sizeof(info
);
990 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
992 void *rule_buf
= NULL
;
997 /* struct ethtool_rxnfc was originally defined for
998 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
999 * members. User-space might still be using that
1001 if (cmd
== ETHTOOL_GRXFH
)
1002 info_size
= (offsetof(struct ethtool_rxnfc
, data
) +
1005 if (copy_from_user(&info
, useraddr
, info_size
))
1008 if (info
.cmd
== ETHTOOL_GRXCLSRLALL
) {
1009 if (info
.rule_cnt
> 0) {
1010 if (info
.rule_cnt
<= KMALLOC_MAX_SIZE
/ sizeof(u32
))
1011 rule_buf
= kzalloc(info
.rule_cnt
* sizeof(u32
),
1018 ret
= ops
->get_rxnfc(dev
, &info
, rule_buf
);
1023 if (copy_to_user(useraddr
, &info
, info_size
))
1027 useraddr
+= offsetof(struct ethtool_rxnfc
, rule_locs
);
1028 if (copy_to_user(useraddr
, rule_buf
,
1029 info
.rule_cnt
* sizeof(u32
)))
1040 static int ethtool_copy_validate_indir(u32
*indir
, void __user
*useraddr
,
1041 struct ethtool_rxnfc
*rx_rings
,
1046 if (copy_from_user(indir
, useraddr
, size
* sizeof(indir
[0])))
1049 /* Validate ring indices */
1050 for (i
= 0; i
< size
; i
++)
1051 if (indir
[i
] >= rx_rings
->data
)
1057 u8 netdev_rss_key
[NETDEV_RSS_KEY_LEN
] __read_mostly
;
1059 void netdev_rss_key_fill(void *buffer
, size_t len
)
1061 BUG_ON(len
> sizeof(netdev_rss_key
));
1062 net_get_random_once(netdev_rss_key
, sizeof(netdev_rss_key
));
1063 memcpy(buffer
, netdev_rss_key
, len
);
1065 EXPORT_SYMBOL(netdev_rss_key_fill
);
1067 static int ethtool_get_max_rxfh_channel(struct net_device
*dev
, u32
*max
)
1069 u32 dev_size
, current_max
= 0;
1073 if (!dev
->ethtool_ops
->get_rxfh_indir_size
||
1074 !dev
->ethtool_ops
->get_rxfh
)
1076 dev_size
= dev
->ethtool_ops
->get_rxfh_indir_size(dev
);
1080 indir
= kcalloc(dev_size
, sizeof(indir
[0]), GFP_USER
);
1084 ret
= dev
->ethtool_ops
->get_rxfh(dev
, indir
, NULL
, NULL
);
1089 current_max
= max(current_max
, indir
[dev_size
]);
1098 static noinline_for_stack
int ethtool_get_rxfh_indir(struct net_device
*dev
,
1099 void __user
*useraddr
)
1101 u32 user_size
, dev_size
;
1105 if (!dev
->ethtool_ops
->get_rxfh_indir_size
||
1106 !dev
->ethtool_ops
->get_rxfh
)
1108 dev_size
= dev
->ethtool_ops
->get_rxfh_indir_size(dev
);
1112 if (copy_from_user(&user_size
,
1113 useraddr
+ offsetof(struct ethtool_rxfh_indir
, size
),
1117 if (copy_to_user(useraddr
+ offsetof(struct ethtool_rxfh_indir
, size
),
1118 &dev_size
, sizeof(dev_size
)))
1121 /* If the user buffer size is 0, this is just a query for the
1122 * device table size. Otherwise, if it's smaller than the
1123 * device table size it's an error.
1125 if (user_size
< dev_size
)
1126 return user_size
== 0 ? 0 : -EINVAL
;
1128 indir
= kcalloc(dev_size
, sizeof(indir
[0]), GFP_USER
);
1132 ret
= dev
->ethtool_ops
->get_rxfh(dev
, indir
, NULL
, NULL
);
1136 if (copy_to_user(useraddr
+
1137 offsetof(struct ethtool_rxfh_indir
, ring_index
[0]),
1138 indir
, dev_size
* sizeof(indir
[0])))
1146 static noinline_for_stack
int ethtool_set_rxfh_indir(struct net_device
*dev
,
1147 void __user
*useraddr
)
1149 struct ethtool_rxnfc rx_rings
;
1150 u32 user_size
, dev_size
, i
;
1152 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1154 u32 ringidx_offset
= offsetof(struct ethtool_rxfh_indir
, ring_index
[0]);
1156 if (!ops
->get_rxfh_indir_size
|| !ops
->set_rxfh
||
1160 dev_size
= ops
->get_rxfh_indir_size(dev
);
1164 if (copy_from_user(&user_size
,
1165 useraddr
+ offsetof(struct ethtool_rxfh_indir
, size
),
1169 if (user_size
!= 0 && user_size
!= dev_size
)
1172 indir
= kcalloc(dev_size
, sizeof(indir
[0]), GFP_USER
);
1176 rx_rings
.cmd
= ETHTOOL_GRXRINGS
;
1177 ret
= ops
->get_rxnfc(dev
, &rx_rings
, NULL
);
1181 if (user_size
== 0) {
1182 for (i
= 0; i
< dev_size
; i
++)
1183 indir
[i
] = ethtool_rxfh_indir_default(i
, rx_rings
.data
);
1185 ret
= ethtool_copy_validate_indir(indir
,
1186 useraddr
+ ringidx_offset
,
1193 ret
= ops
->set_rxfh(dev
, indir
, NULL
, ETH_RSS_HASH_NO_CHANGE
);
1197 /* indicate whether rxfh was set to default */
1199 dev
->priv_flags
&= ~IFF_RXFH_CONFIGURED
;
1201 dev
->priv_flags
|= IFF_RXFH_CONFIGURED
;
1208 static noinline_for_stack
int ethtool_get_rxfh(struct net_device
*dev
,
1209 void __user
*useraddr
)
1212 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1213 u32 user_indir_size
, user_key_size
;
1214 u32 dev_indir_size
= 0, dev_key_size
= 0;
1215 struct ethtool_rxfh rxfh
;
1226 if (ops
->get_rxfh_indir_size
)
1227 dev_indir_size
= ops
->get_rxfh_indir_size(dev
);
1228 if (ops
->get_rxfh_key_size
)
1229 dev_key_size
= ops
->get_rxfh_key_size(dev
);
1231 if (copy_from_user(&rxfh
, useraddr
, sizeof(rxfh
)))
1233 user_indir_size
= rxfh
.indir_size
;
1234 user_key_size
= rxfh
.key_size
;
1236 /* Check that reserved fields are 0 for now */
1237 if (rxfh
.rss_context
|| rxfh
.rsvd8
[0] || rxfh
.rsvd8
[1] ||
1238 rxfh
.rsvd8
[2] || rxfh
.rsvd32
)
1241 rxfh
.indir_size
= dev_indir_size
;
1242 rxfh
.key_size
= dev_key_size
;
1243 if (copy_to_user(useraddr
, &rxfh
, sizeof(rxfh
)))
1246 if ((user_indir_size
&& (user_indir_size
!= dev_indir_size
)) ||
1247 (user_key_size
&& (user_key_size
!= dev_key_size
)))
1250 indir_bytes
= user_indir_size
* sizeof(indir
[0]);
1251 total_size
= indir_bytes
+ user_key_size
;
1252 rss_config
= kzalloc(total_size
, GFP_USER
);
1256 if (user_indir_size
)
1257 indir
= (u32
*)rss_config
;
1260 hkey
= rss_config
+ indir_bytes
;
1262 ret
= dev
->ethtool_ops
->get_rxfh(dev
, indir
, hkey
, &dev_hfunc
);
1266 if (copy_to_user(useraddr
+ offsetof(struct ethtool_rxfh
, hfunc
),
1267 &dev_hfunc
, sizeof(rxfh
.hfunc
))) {
1269 } else if (copy_to_user(useraddr
+
1270 offsetof(struct ethtool_rxfh
, rss_config
[0]),
1271 rss_config
, total_size
)) {
1280 static noinline_for_stack
int ethtool_set_rxfh(struct net_device
*dev
,
1281 void __user
*useraddr
)
1284 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1285 struct ethtool_rxnfc rx_rings
;
1286 struct ethtool_rxfh rxfh
;
1287 u32 dev_indir_size
= 0, dev_key_size
= 0, i
;
1288 u32
*indir
= NULL
, indir_bytes
= 0;
1291 u32 rss_cfg_offset
= offsetof(struct ethtool_rxfh
, rss_config
[0]);
1293 if (!ops
->get_rxnfc
|| !ops
->set_rxfh
)
1296 if (ops
->get_rxfh_indir_size
)
1297 dev_indir_size
= ops
->get_rxfh_indir_size(dev
);
1298 if (ops
->get_rxfh_key_size
)
1299 dev_key_size
= ops
->get_rxfh_key_size(dev
);
1301 if (copy_from_user(&rxfh
, useraddr
, sizeof(rxfh
)))
1304 /* Check that reserved fields are 0 for now */
1305 if (rxfh
.rss_context
|| rxfh
.rsvd8
[0] || rxfh
.rsvd8
[1] ||
1306 rxfh
.rsvd8
[2] || rxfh
.rsvd32
)
1309 /* If either indir, hash key or function is valid, proceed further.
1310 * Must request at least one change: indir size, hash key or function.
1312 if ((rxfh
.indir_size
&&
1313 rxfh
.indir_size
!= ETH_RXFH_INDIR_NO_CHANGE
&&
1314 rxfh
.indir_size
!= dev_indir_size
) ||
1315 (rxfh
.key_size
&& (rxfh
.key_size
!= dev_key_size
)) ||
1316 (rxfh
.indir_size
== ETH_RXFH_INDIR_NO_CHANGE
&&
1317 rxfh
.key_size
== 0 && rxfh
.hfunc
== ETH_RSS_HASH_NO_CHANGE
))
1320 if (rxfh
.indir_size
!= ETH_RXFH_INDIR_NO_CHANGE
)
1321 indir_bytes
= dev_indir_size
* sizeof(indir
[0]);
1323 rss_config
= kzalloc(indir_bytes
+ rxfh
.key_size
, GFP_USER
);
1327 rx_rings
.cmd
= ETHTOOL_GRXRINGS
;
1328 ret
= ops
->get_rxnfc(dev
, &rx_rings
, NULL
);
1332 /* rxfh.indir_size == 0 means reset the indir table to default.
1333 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
1335 if (rxfh
.indir_size
&&
1336 rxfh
.indir_size
!= ETH_RXFH_INDIR_NO_CHANGE
) {
1337 indir
= (u32
*)rss_config
;
1338 ret
= ethtool_copy_validate_indir(indir
,
1339 useraddr
+ rss_cfg_offset
,
1344 } else if (rxfh
.indir_size
== 0) {
1345 indir
= (u32
*)rss_config
;
1346 for (i
= 0; i
< dev_indir_size
; i
++)
1347 indir
[i
] = ethtool_rxfh_indir_default(i
, rx_rings
.data
);
1350 if (rxfh
.key_size
) {
1351 hkey
= rss_config
+ indir_bytes
;
1352 if (copy_from_user(hkey
,
1353 useraddr
+ rss_cfg_offset
+ indir_bytes
,
1360 ret
= ops
->set_rxfh(dev
, indir
, hkey
, rxfh
.hfunc
);
1364 /* indicate whether rxfh was set to default */
1365 if (rxfh
.indir_size
== 0)
1366 dev
->priv_flags
&= ~IFF_RXFH_CONFIGURED
;
1367 else if (rxfh
.indir_size
!= ETH_RXFH_INDIR_NO_CHANGE
)
1368 dev
->priv_flags
|= IFF_RXFH_CONFIGURED
;
1375 static int ethtool_get_regs(struct net_device
*dev
, char __user
*useraddr
)
1377 struct ethtool_regs regs
;
1378 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1382 if (!ops
->get_regs
|| !ops
->get_regs_len
)
1385 if (copy_from_user(®s
, useraddr
, sizeof(regs
)))
1388 reglen
= ops
->get_regs_len(dev
);
1389 if (regs
.len
> reglen
)
1392 regbuf
= vzalloc(reglen
);
1393 if (reglen
&& !regbuf
)
1396 ops
->get_regs(dev
, ®s
, regbuf
);
1399 if (copy_to_user(useraddr
, ®s
, sizeof(regs
)))
1401 useraddr
+= offsetof(struct ethtool_regs
, data
);
1402 if (regbuf
&& copy_to_user(useraddr
, regbuf
, regs
.len
))
1411 static int ethtool_reset(struct net_device
*dev
, char __user
*useraddr
)
1413 struct ethtool_value reset
;
1416 if (!dev
->ethtool_ops
->reset
)
1419 if (copy_from_user(&reset
, useraddr
, sizeof(reset
)))
1422 ret
= dev
->ethtool_ops
->reset(dev
, &reset
.data
);
1426 if (copy_to_user(useraddr
, &reset
, sizeof(reset
)))
1431 static int ethtool_get_wol(struct net_device
*dev
, char __user
*useraddr
)
1433 struct ethtool_wolinfo wol
= { .cmd
= ETHTOOL_GWOL
};
1435 if (!dev
->ethtool_ops
->get_wol
)
1438 dev
->ethtool_ops
->get_wol(dev
, &wol
);
1440 if (copy_to_user(useraddr
, &wol
, sizeof(wol
)))
1445 static int ethtool_set_wol(struct net_device
*dev
, char __user
*useraddr
)
1447 struct ethtool_wolinfo wol
;
1449 if (!dev
->ethtool_ops
->set_wol
)
1452 if (copy_from_user(&wol
, useraddr
, sizeof(wol
)))
1455 return dev
->ethtool_ops
->set_wol(dev
, &wol
);
1458 static int ethtool_get_eee(struct net_device
*dev
, char __user
*useraddr
)
1460 struct ethtool_eee edata
;
1463 if (!dev
->ethtool_ops
->get_eee
)
1466 memset(&edata
, 0, sizeof(struct ethtool_eee
));
1467 edata
.cmd
= ETHTOOL_GEEE
;
1468 rc
= dev
->ethtool_ops
->get_eee(dev
, &edata
);
1473 if (copy_to_user(useraddr
, &edata
, sizeof(edata
)))
1479 static int ethtool_set_eee(struct net_device
*dev
, char __user
*useraddr
)
1481 struct ethtool_eee edata
;
1483 if (!dev
->ethtool_ops
->set_eee
)
1486 if (copy_from_user(&edata
, useraddr
, sizeof(edata
)))
1489 return dev
->ethtool_ops
->set_eee(dev
, &edata
);
1492 static int ethtool_nway_reset(struct net_device
*dev
)
1494 if (!dev
->ethtool_ops
->nway_reset
)
1497 return dev
->ethtool_ops
->nway_reset(dev
);
1500 static int ethtool_get_link(struct net_device
*dev
, char __user
*useraddr
)
1502 struct ethtool_value edata
= { .cmd
= ETHTOOL_GLINK
};
1504 if (!dev
->ethtool_ops
->get_link
)
1507 edata
.data
= netif_running(dev
) && dev
->ethtool_ops
->get_link(dev
);
1509 if (copy_to_user(useraddr
, &edata
, sizeof(edata
)))
1514 static int ethtool_get_any_eeprom(struct net_device
*dev
, void __user
*useraddr
,
1515 int (*getter
)(struct net_device
*,
1516 struct ethtool_eeprom
*, u8
*),
1519 struct ethtool_eeprom eeprom
;
1520 void __user
*userbuf
= useraddr
+ sizeof(eeprom
);
1521 u32 bytes_remaining
;
1525 if (copy_from_user(&eeprom
, useraddr
, sizeof(eeprom
)))
1528 /* Check for wrap and zero */
1529 if (eeprom
.offset
+ eeprom
.len
<= eeprom
.offset
)
1532 /* Check for exceeding total eeprom len */
1533 if (eeprom
.offset
+ eeprom
.len
> total_len
)
1536 data
= kmalloc(PAGE_SIZE
, GFP_USER
);
1540 bytes_remaining
= eeprom
.len
;
1541 while (bytes_remaining
> 0) {
1542 eeprom
.len
= min(bytes_remaining
, (u32
)PAGE_SIZE
);
1544 ret
= getter(dev
, &eeprom
, data
);
1547 if (copy_to_user(userbuf
, data
, eeprom
.len
)) {
1551 userbuf
+= eeprom
.len
;
1552 eeprom
.offset
+= eeprom
.len
;
1553 bytes_remaining
-= eeprom
.len
;
1556 eeprom
.len
= userbuf
- (useraddr
+ sizeof(eeprom
));
1557 eeprom
.offset
-= eeprom
.len
;
1558 if (copy_to_user(useraddr
, &eeprom
, sizeof(eeprom
)))
1565 static int ethtool_get_eeprom(struct net_device
*dev
, void __user
*useraddr
)
1567 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1569 if (!ops
->get_eeprom
|| !ops
->get_eeprom_len
||
1570 !ops
->get_eeprom_len(dev
))
1573 return ethtool_get_any_eeprom(dev
, useraddr
, ops
->get_eeprom
,
1574 ops
->get_eeprom_len(dev
));
1577 static int ethtool_set_eeprom(struct net_device
*dev
, void __user
*useraddr
)
1579 struct ethtool_eeprom eeprom
;
1580 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1581 void __user
*userbuf
= useraddr
+ sizeof(eeprom
);
1582 u32 bytes_remaining
;
1586 if (!ops
->set_eeprom
|| !ops
->get_eeprom_len
||
1587 !ops
->get_eeprom_len(dev
))
1590 if (copy_from_user(&eeprom
, useraddr
, sizeof(eeprom
)))
1593 /* Check for wrap and zero */
1594 if (eeprom
.offset
+ eeprom
.len
<= eeprom
.offset
)
1597 /* Check for exceeding total eeprom len */
1598 if (eeprom
.offset
+ eeprom
.len
> ops
->get_eeprom_len(dev
))
1601 data
= kmalloc(PAGE_SIZE
, GFP_USER
);
1605 bytes_remaining
= eeprom
.len
;
1606 while (bytes_remaining
> 0) {
1607 eeprom
.len
= min(bytes_remaining
, (u32
)PAGE_SIZE
);
1609 if (copy_from_user(data
, userbuf
, eeprom
.len
)) {
1613 ret
= ops
->set_eeprom(dev
, &eeprom
, data
);
1616 userbuf
+= eeprom
.len
;
1617 eeprom
.offset
+= eeprom
.len
;
1618 bytes_remaining
-= eeprom
.len
;
1625 static noinline_for_stack
int ethtool_get_coalesce(struct net_device
*dev
,
1626 void __user
*useraddr
)
1628 struct ethtool_coalesce coalesce
= { .cmd
= ETHTOOL_GCOALESCE
};
1630 if (!dev
->ethtool_ops
->get_coalesce
)
1633 dev
->ethtool_ops
->get_coalesce(dev
, &coalesce
);
1635 if (copy_to_user(useraddr
, &coalesce
, sizeof(coalesce
)))
1640 static noinline_for_stack
int ethtool_set_coalesce(struct net_device
*dev
,
1641 void __user
*useraddr
)
1643 struct ethtool_coalesce coalesce
;
1645 if (!dev
->ethtool_ops
->set_coalesce
)
1648 if (copy_from_user(&coalesce
, useraddr
, sizeof(coalesce
)))
1651 return dev
->ethtool_ops
->set_coalesce(dev
, &coalesce
);
1654 static int ethtool_get_ringparam(struct net_device
*dev
, void __user
*useraddr
)
1656 struct ethtool_ringparam ringparam
= { .cmd
= ETHTOOL_GRINGPARAM
};
1658 if (!dev
->ethtool_ops
->get_ringparam
)
1661 dev
->ethtool_ops
->get_ringparam(dev
, &ringparam
);
1663 if (copy_to_user(useraddr
, &ringparam
, sizeof(ringparam
)))
1668 static int ethtool_set_ringparam(struct net_device
*dev
, void __user
*useraddr
)
1670 struct ethtool_ringparam ringparam
;
1672 if (!dev
->ethtool_ops
->set_ringparam
)
1675 if (copy_from_user(&ringparam
, useraddr
, sizeof(ringparam
)))
1678 return dev
->ethtool_ops
->set_ringparam(dev
, &ringparam
);
1681 static noinline_for_stack
int ethtool_get_channels(struct net_device
*dev
,
1682 void __user
*useraddr
)
1684 struct ethtool_channels channels
= { .cmd
= ETHTOOL_GCHANNELS
};
1686 if (!dev
->ethtool_ops
->get_channels
)
1689 dev
->ethtool_ops
->get_channels(dev
, &channels
);
1691 if (copy_to_user(useraddr
, &channels
, sizeof(channels
)))
1696 static noinline_for_stack
int ethtool_set_channels(struct net_device
*dev
,
1697 void __user
*useraddr
)
1699 struct ethtool_channels channels
, max
;
1700 u32 max_rx_in_use
= 0;
1702 if (!dev
->ethtool_ops
->set_channels
|| !dev
->ethtool_ops
->get_channels
)
1705 if (copy_from_user(&channels
, useraddr
, sizeof(channels
)))
1708 dev
->ethtool_ops
->get_channels(dev
, &max
);
1710 /* ensure new counts are within the maximums */
1711 if ((channels
.rx_count
> max
.max_rx
) ||
1712 (channels
.tx_count
> max
.max_tx
) ||
1713 (channels
.combined_count
> max
.max_combined
) ||
1714 (channels
.other_count
> max
.max_other
))
1717 /* ensure the new Rx count fits within the configured Rx flow
1718 * indirection table settings */
1719 if (netif_is_rxfh_configured(dev
) &&
1720 !ethtool_get_max_rxfh_channel(dev
, &max_rx_in_use
) &&
1721 (channels
.combined_count
+ channels
.rx_count
) <= max_rx_in_use
)
1724 return dev
->ethtool_ops
->set_channels(dev
, &channels
);
1727 static int ethtool_get_pauseparam(struct net_device
*dev
, void __user
*useraddr
)
1729 struct ethtool_pauseparam pauseparam
= { ETHTOOL_GPAUSEPARAM
};
1731 if (!dev
->ethtool_ops
->get_pauseparam
)
1734 dev
->ethtool_ops
->get_pauseparam(dev
, &pauseparam
);
1736 if (copy_to_user(useraddr
, &pauseparam
, sizeof(pauseparam
)))
1741 static int ethtool_set_pauseparam(struct net_device
*dev
, void __user
*useraddr
)
1743 struct ethtool_pauseparam pauseparam
;
1745 if (!dev
->ethtool_ops
->set_pauseparam
)
1748 if (copy_from_user(&pauseparam
, useraddr
, sizeof(pauseparam
)))
1751 return dev
->ethtool_ops
->set_pauseparam(dev
, &pauseparam
);
1754 static int ethtool_self_test(struct net_device
*dev
, char __user
*useraddr
)
1756 struct ethtool_test test
;
1757 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1761 if (!ops
->self_test
|| !ops
->get_sset_count
)
1764 test_len
= ops
->get_sset_count(dev
, ETH_SS_TEST
);
1767 WARN_ON(test_len
== 0);
1769 if (copy_from_user(&test
, useraddr
, sizeof(test
)))
1772 test
.len
= test_len
;
1773 data
= kmalloc(test_len
* sizeof(u64
), GFP_USER
);
1777 ops
->self_test(dev
, &test
, data
);
1780 if (copy_to_user(useraddr
, &test
, sizeof(test
)))
1782 useraddr
+= sizeof(test
);
1783 if (copy_to_user(useraddr
, data
, test
.len
* sizeof(u64
)))
1792 static int ethtool_get_strings(struct net_device
*dev
, void __user
*useraddr
)
1794 struct ethtool_gstrings gstrings
;
1798 if (copy_from_user(&gstrings
, useraddr
, sizeof(gstrings
)))
1801 ret
= __ethtool_get_sset_count(dev
, gstrings
.string_set
);
1807 data
= kcalloc(gstrings
.len
, ETH_GSTRING_LEN
, GFP_USER
);
1811 __ethtool_get_strings(dev
, gstrings
.string_set
, data
);
1814 if (copy_to_user(useraddr
, &gstrings
, sizeof(gstrings
)))
1816 useraddr
+= sizeof(gstrings
);
1817 if (copy_to_user(useraddr
, data
, gstrings
.len
* ETH_GSTRING_LEN
))
1826 static int ethtool_phys_id(struct net_device
*dev
, void __user
*useraddr
)
1828 struct ethtool_value id
;
1830 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1833 if (!ops
->set_phys_id
)
1839 if (copy_from_user(&id
, useraddr
, sizeof(id
)))
1842 rc
= ops
->set_phys_id(dev
, ETHTOOL_ID_ACTIVE
);
1846 /* Drop the RTNL lock while waiting, but prevent reentry or
1847 * removal of the device.
1854 /* Driver will handle this itself */
1855 schedule_timeout_interruptible(
1856 id
.data
? (id
.data
* HZ
) : MAX_SCHEDULE_TIMEOUT
);
1858 /* Driver expects to be called at twice the frequency in rc */
1859 int n
= rc
* 2, i
, interval
= HZ
/ n
;
1861 /* Count down seconds */
1863 /* Count down iterations per second */
1867 rc
= ops
->set_phys_id(dev
,
1868 (i
& 1) ? ETHTOOL_ID_OFF
: ETHTOOL_ID_ON
);
1872 schedule_timeout_interruptible(interval
);
1873 } while (!signal_pending(current
) && --i
!= 0);
1874 } while (!signal_pending(current
) &&
1875 (id
.data
== 0 || --id
.data
!= 0));
1882 (void) ops
->set_phys_id(dev
, ETHTOOL_ID_INACTIVE
);
1886 static int ethtool_get_stats(struct net_device
*dev
, void __user
*useraddr
)
1888 struct ethtool_stats stats
;
1889 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1893 if (!ops
->get_ethtool_stats
|| !ops
->get_sset_count
)
1896 n_stats
= ops
->get_sset_count(dev
, ETH_SS_STATS
);
1899 WARN_ON(n_stats
== 0);
1901 if (copy_from_user(&stats
, useraddr
, sizeof(stats
)))
1904 stats
.n_stats
= n_stats
;
1905 data
= kmalloc(n_stats
* sizeof(u64
), GFP_USER
);
1909 ops
->get_ethtool_stats(dev
, &stats
, data
);
1912 if (copy_to_user(useraddr
, &stats
, sizeof(stats
)))
1914 useraddr
+= sizeof(stats
);
1915 if (copy_to_user(useraddr
, data
, stats
.n_stats
* sizeof(u64
)))
1924 static int ethtool_get_phy_stats(struct net_device
*dev
, void __user
*useraddr
)
1926 struct ethtool_stats stats
;
1927 struct phy_device
*phydev
= dev
->phydev
;
1934 n_stats
= phy_get_sset_count(phydev
);
1938 WARN_ON(n_stats
== 0);
1940 if (copy_from_user(&stats
, useraddr
, sizeof(stats
)))
1943 stats
.n_stats
= n_stats
;
1944 data
= kmalloc_array(n_stats
, sizeof(u64
), GFP_USER
);
1948 mutex_lock(&phydev
->lock
);
1949 phydev
->drv
->get_stats(phydev
, &stats
, data
);
1950 mutex_unlock(&phydev
->lock
);
1953 if (copy_to_user(useraddr
, &stats
, sizeof(stats
)))
1955 useraddr
+= sizeof(stats
);
1956 if (copy_to_user(useraddr
, data
, stats
.n_stats
* sizeof(u64
)))
1965 static int ethtool_get_perm_addr(struct net_device
*dev
, void __user
*useraddr
)
1967 struct ethtool_perm_addr epaddr
;
1969 if (copy_from_user(&epaddr
, useraddr
, sizeof(epaddr
)))
1972 if (epaddr
.size
< dev
->addr_len
)
1974 epaddr
.size
= dev
->addr_len
;
1976 if (copy_to_user(useraddr
, &epaddr
, sizeof(epaddr
)))
1978 useraddr
+= sizeof(epaddr
);
1979 if (copy_to_user(useraddr
, dev
->perm_addr
, epaddr
.size
))
1984 static int ethtool_get_value(struct net_device
*dev
, char __user
*useraddr
,
1985 u32 cmd
, u32 (*actor
)(struct net_device
*))
1987 struct ethtool_value edata
= { .cmd
= cmd
};
1992 edata
.data
= actor(dev
);
1994 if (copy_to_user(useraddr
, &edata
, sizeof(edata
)))
1999 static int ethtool_set_value_void(struct net_device
*dev
, char __user
*useraddr
,
2000 void (*actor
)(struct net_device
*, u32
))
2002 struct ethtool_value edata
;
2007 if (copy_from_user(&edata
, useraddr
, sizeof(edata
)))
2010 actor(dev
, edata
.data
);
2014 static int ethtool_set_value(struct net_device
*dev
, char __user
*useraddr
,
2015 int (*actor
)(struct net_device
*, u32
))
2017 struct ethtool_value edata
;
2022 if (copy_from_user(&edata
, useraddr
, sizeof(edata
)))
2025 return actor(dev
, edata
.data
);
2028 static noinline_for_stack
int ethtool_flash_device(struct net_device
*dev
,
2029 char __user
*useraddr
)
2031 struct ethtool_flash efl
;
2033 if (copy_from_user(&efl
, useraddr
, sizeof(efl
)))
2036 if (!dev
->ethtool_ops
->flash_device
)
2039 efl
.data
[ETHTOOL_FLASH_MAX_FILENAME
- 1] = 0;
2041 return dev
->ethtool_ops
->flash_device(dev
, &efl
);
2044 static int ethtool_set_dump(struct net_device
*dev
,
2045 void __user
*useraddr
)
2047 struct ethtool_dump dump
;
2049 if (!dev
->ethtool_ops
->set_dump
)
2052 if (copy_from_user(&dump
, useraddr
, sizeof(dump
)))
2055 return dev
->ethtool_ops
->set_dump(dev
, &dump
);
2058 static int ethtool_get_dump_flag(struct net_device
*dev
,
2059 void __user
*useraddr
)
2062 struct ethtool_dump dump
;
2063 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2065 if (!ops
->get_dump_flag
)
2068 if (copy_from_user(&dump
, useraddr
, sizeof(dump
)))
2071 ret
= ops
->get_dump_flag(dev
, &dump
);
2075 if (copy_to_user(useraddr
, &dump
, sizeof(dump
)))
2080 static int ethtool_get_dump_data(struct net_device
*dev
,
2081 void __user
*useraddr
)
2085 struct ethtool_dump dump
, tmp
;
2086 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2089 if (!ops
->get_dump_data
|| !ops
->get_dump_flag
)
2092 if (copy_from_user(&dump
, useraddr
, sizeof(dump
)))
2095 memset(&tmp
, 0, sizeof(tmp
));
2096 tmp
.cmd
= ETHTOOL_GET_DUMP_FLAG
;
2097 ret
= ops
->get_dump_flag(dev
, &tmp
);
2101 len
= min(tmp
.len
, dump
.len
);
2105 /* Don't ever let the driver think there's more space available
2106 * than it requested with .get_dump_flag().
2110 /* Always allocate enough space to hold the whole thing so that the
2111 * driver does not need to check the length and bother with partial
2114 data
= vzalloc(tmp
.len
);
2117 ret
= ops
->get_dump_data(dev
, &dump
, data
);
2121 /* There are two sane possibilities:
2122 * 1. The driver's .get_dump_data() does not touch dump.len.
2123 * 2. Or it may set dump.len to how much it really writes, which
2124 * should be tmp.len (or len if it can do a partial dump).
2125 * In any case respond to userspace with the actual length of data
2128 WARN_ON(dump
.len
!= len
&& dump
.len
!= tmp
.len
);
2131 if (copy_to_user(useraddr
, &dump
, sizeof(dump
))) {
2135 useraddr
+= offsetof(struct ethtool_dump
, data
);
2136 if (copy_to_user(useraddr
, data
, len
))
2143 static int ethtool_get_ts_info(struct net_device
*dev
, void __user
*useraddr
)
2146 struct ethtool_ts_info info
;
2147 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2148 struct phy_device
*phydev
= dev
->phydev
;
2150 memset(&info
, 0, sizeof(info
));
2151 info
.cmd
= ETHTOOL_GET_TS_INFO
;
2153 if (phydev
&& phydev
->drv
&& phydev
->drv
->ts_info
) {
2154 err
= phydev
->drv
->ts_info(phydev
, &info
);
2155 } else if (ops
->get_ts_info
) {
2156 err
= ops
->get_ts_info(dev
, &info
);
2158 info
.so_timestamping
=
2159 SOF_TIMESTAMPING_RX_SOFTWARE
|
2160 SOF_TIMESTAMPING_SOFTWARE
;
2161 info
.phc_index
= -1;
2167 if (copy_to_user(useraddr
, &info
, sizeof(info
)))
2173 static int __ethtool_get_module_info(struct net_device
*dev
,
2174 struct ethtool_modinfo
*modinfo
)
2176 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2177 struct phy_device
*phydev
= dev
->phydev
;
2179 if (phydev
&& phydev
->drv
&& phydev
->drv
->module_info
)
2180 return phydev
->drv
->module_info(phydev
, modinfo
);
2182 if (ops
->get_module_info
)
2183 return ops
->get_module_info(dev
, modinfo
);
2188 static int ethtool_get_module_info(struct net_device
*dev
,
2189 void __user
*useraddr
)
2192 struct ethtool_modinfo modinfo
;
2194 if (copy_from_user(&modinfo
, useraddr
, sizeof(modinfo
)))
2197 ret
= __ethtool_get_module_info(dev
, &modinfo
);
2201 if (copy_to_user(useraddr
, &modinfo
, sizeof(modinfo
)))
2207 static int __ethtool_get_module_eeprom(struct net_device
*dev
,
2208 struct ethtool_eeprom
*ee
, u8
*data
)
2210 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2211 struct phy_device
*phydev
= dev
->phydev
;
2213 if (phydev
&& phydev
->drv
&& phydev
->drv
->module_eeprom
)
2214 return phydev
->drv
->module_eeprom(phydev
, ee
, data
);
2216 if (ops
->get_module_eeprom
)
2217 return ops
->get_module_eeprom(dev
, ee
, data
);
2222 static int ethtool_get_module_eeprom(struct net_device
*dev
,
2223 void __user
*useraddr
)
2226 struct ethtool_modinfo modinfo
;
2228 ret
= __ethtool_get_module_info(dev
, &modinfo
);
2232 return ethtool_get_any_eeprom(dev
, useraddr
,
2233 __ethtool_get_module_eeprom
,
2234 modinfo
.eeprom_len
);
2237 static int ethtool_tunable_valid(const struct ethtool_tunable
*tuna
)
2240 case ETHTOOL_RX_COPYBREAK
:
2241 case ETHTOOL_TX_COPYBREAK
:
2242 if (tuna
->len
!= sizeof(u32
) ||
2243 tuna
->type_id
!= ETHTOOL_TUNABLE_U32
)
2253 static int ethtool_get_tunable(struct net_device
*dev
, void __user
*useraddr
)
2256 struct ethtool_tunable tuna
;
2257 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2260 if (!ops
->get_tunable
)
2262 if (copy_from_user(&tuna
, useraddr
, sizeof(tuna
)))
2264 ret
= ethtool_tunable_valid(&tuna
);
2267 data
= kmalloc(tuna
.len
, GFP_USER
);
2270 ret
= ops
->get_tunable(dev
, &tuna
, data
);
2273 useraddr
+= sizeof(tuna
);
2275 if (copy_to_user(useraddr
, data
, tuna
.len
))
2284 static int ethtool_set_tunable(struct net_device
*dev
, void __user
*useraddr
)
2287 struct ethtool_tunable tuna
;
2288 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2291 if (!ops
->set_tunable
)
2293 if (copy_from_user(&tuna
, useraddr
, sizeof(tuna
)))
2295 ret
= ethtool_tunable_valid(&tuna
);
2298 data
= kmalloc(tuna
.len
, GFP_USER
);
2301 useraddr
+= sizeof(tuna
);
2303 if (copy_from_user(data
, useraddr
, tuna
.len
))
2305 ret
= ops
->set_tunable(dev
, &tuna
, data
);
2312 static int ethtool_get_per_queue_coalesce(struct net_device
*dev
,
2313 void __user
*useraddr
,
2314 struct ethtool_per_queue_op
*per_queue_opt
)
2318 DECLARE_BITMAP(queue_mask
, MAX_NUM_QUEUE
);
2320 if (!dev
->ethtool_ops
->get_per_queue_coalesce
)
2323 useraddr
+= sizeof(*per_queue_opt
);
2325 bitmap_from_u32array(queue_mask
,
2327 per_queue_opt
->queue_mask
,
2328 DIV_ROUND_UP(MAX_NUM_QUEUE
, 32));
2330 for_each_set_bit(bit
, queue_mask
, MAX_NUM_QUEUE
) {
2331 struct ethtool_coalesce coalesce
= { .cmd
= ETHTOOL_GCOALESCE
};
2333 ret
= dev
->ethtool_ops
->get_per_queue_coalesce(dev
, bit
, &coalesce
);
2336 if (copy_to_user(useraddr
, &coalesce
, sizeof(coalesce
)))
2338 useraddr
+= sizeof(coalesce
);
2344 static int ethtool_set_per_queue_coalesce(struct net_device
*dev
,
2345 void __user
*useraddr
,
2346 struct ethtool_per_queue_op
*per_queue_opt
)
2351 struct ethtool_coalesce
*backup
= NULL
, *tmp
= NULL
;
2352 DECLARE_BITMAP(queue_mask
, MAX_NUM_QUEUE
);
2354 if ((!dev
->ethtool_ops
->set_per_queue_coalesce
) ||
2355 (!dev
->ethtool_ops
->get_per_queue_coalesce
))
2358 useraddr
+= sizeof(*per_queue_opt
);
2360 bitmap_from_u32array(queue_mask
,
2362 per_queue_opt
->queue_mask
,
2363 DIV_ROUND_UP(MAX_NUM_QUEUE
, 32));
2364 n_queue
= bitmap_weight(queue_mask
, MAX_NUM_QUEUE
);
2365 tmp
= backup
= kmalloc_array(n_queue
, sizeof(*backup
), GFP_KERNEL
);
2369 for_each_set_bit(bit
, queue_mask
, MAX_NUM_QUEUE
) {
2370 struct ethtool_coalesce coalesce
;
2372 ret
= dev
->ethtool_ops
->get_per_queue_coalesce(dev
, bit
, tmp
);
2378 if (copy_from_user(&coalesce
, useraddr
, sizeof(coalesce
))) {
2383 ret
= dev
->ethtool_ops
->set_per_queue_coalesce(dev
, bit
, &coalesce
);
2387 useraddr
+= sizeof(coalesce
);
2393 for_each_set_bit(i
, queue_mask
, bit
) {
2394 dev
->ethtool_ops
->set_per_queue_coalesce(dev
, i
, tmp
);
2403 static int ethtool_set_per_queue(struct net_device
*dev
, void __user
*useraddr
)
2405 struct ethtool_per_queue_op per_queue_opt
;
2407 if (copy_from_user(&per_queue_opt
, useraddr
, sizeof(per_queue_opt
)))
2410 switch (per_queue_opt
.sub_command
) {
2411 case ETHTOOL_GCOALESCE
:
2412 return ethtool_get_per_queue_coalesce(dev
, useraddr
, &per_queue_opt
);
2413 case ETHTOOL_SCOALESCE
:
2414 return ethtool_set_per_queue_coalesce(dev
, useraddr
, &per_queue_opt
);
2420 /* The main entry point in this file. Called from net/core/dev_ioctl.c */
2422 int dev_ethtool(struct net
*net
, struct ifreq
*ifr
)
2424 struct net_device
*dev
= __dev_get_by_name(net
, ifr
->ifr_name
);
2425 void __user
*useraddr
= ifr
->ifr_data
;
2426 u32 ethcmd
, sub_cmd
;
2428 netdev_features_t old_features
;
2430 if (!dev
|| !netif_device_present(dev
))
2433 if (copy_from_user(ðcmd
, useraddr
, sizeof(ethcmd
)))
2436 if (ethcmd
== ETHTOOL_PERQUEUE
) {
2437 if (copy_from_user(&sub_cmd
, useraddr
+ sizeof(ethcmd
), sizeof(sub_cmd
)))
2442 /* Allow some commands to be done by anyone */
2445 case ETHTOOL_GDRVINFO
:
2446 case ETHTOOL_GMSGLVL
:
2448 case ETHTOOL_GCOALESCE
:
2449 case ETHTOOL_GRINGPARAM
:
2450 case ETHTOOL_GPAUSEPARAM
:
2451 case ETHTOOL_GRXCSUM
:
2452 case ETHTOOL_GTXCSUM
:
2454 case ETHTOOL_GSSET_INFO
:
2455 case ETHTOOL_GSTRINGS
:
2456 case ETHTOOL_GSTATS
:
2457 case ETHTOOL_GPHYSTATS
:
2459 case ETHTOOL_GPERMADDR
:
2463 case ETHTOOL_GFLAGS
:
2464 case ETHTOOL_GPFLAGS
:
2466 case ETHTOOL_GRXRINGS
:
2467 case ETHTOOL_GRXCLSRLCNT
:
2468 case ETHTOOL_GRXCLSRULE
:
2469 case ETHTOOL_GRXCLSRLALL
:
2470 case ETHTOOL_GRXFHINDIR
:
2472 case ETHTOOL_GFEATURES
:
2473 case ETHTOOL_GCHANNELS
:
2474 case ETHTOOL_GET_TS_INFO
:
2476 case ETHTOOL_GTUNABLE
:
2479 if (!ns_capable(net
->user_ns
, CAP_NET_ADMIN
))
2483 if (dev
->ethtool_ops
->begin
) {
2484 rc
= dev
->ethtool_ops
->begin(dev
);
2488 old_features
= dev
->features
;
2492 rc
= ethtool_get_settings(dev
, useraddr
);
2495 rc
= ethtool_set_settings(dev
, useraddr
);
2497 case ETHTOOL_GDRVINFO
:
2498 rc
= ethtool_get_drvinfo(dev
, useraddr
);
2501 rc
= ethtool_get_regs(dev
, useraddr
);
2504 rc
= ethtool_get_wol(dev
, useraddr
);
2507 rc
= ethtool_set_wol(dev
, useraddr
);
2509 case ETHTOOL_GMSGLVL
:
2510 rc
= ethtool_get_value(dev
, useraddr
, ethcmd
,
2511 dev
->ethtool_ops
->get_msglevel
);
2513 case ETHTOOL_SMSGLVL
:
2514 rc
= ethtool_set_value_void(dev
, useraddr
,
2515 dev
->ethtool_ops
->set_msglevel
);
2518 rc
= ethtool_get_eee(dev
, useraddr
);
2521 rc
= ethtool_set_eee(dev
, useraddr
);
2523 case ETHTOOL_NWAY_RST
:
2524 rc
= ethtool_nway_reset(dev
);
2527 rc
= ethtool_get_link(dev
, useraddr
);
2529 case ETHTOOL_GEEPROM
:
2530 rc
= ethtool_get_eeprom(dev
, useraddr
);
2532 case ETHTOOL_SEEPROM
:
2533 rc
= ethtool_set_eeprom(dev
, useraddr
);
2535 case ETHTOOL_GCOALESCE
:
2536 rc
= ethtool_get_coalesce(dev
, useraddr
);
2538 case ETHTOOL_SCOALESCE
:
2539 rc
= ethtool_set_coalesce(dev
, useraddr
);
2541 case ETHTOOL_GRINGPARAM
:
2542 rc
= ethtool_get_ringparam(dev
, useraddr
);
2544 case ETHTOOL_SRINGPARAM
:
2545 rc
= ethtool_set_ringparam(dev
, useraddr
);
2547 case ETHTOOL_GPAUSEPARAM
:
2548 rc
= ethtool_get_pauseparam(dev
, useraddr
);
2550 case ETHTOOL_SPAUSEPARAM
:
2551 rc
= ethtool_set_pauseparam(dev
, useraddr
);
2554 rc
= ethtool_self_test(dev
, useraddr
);
2556 case ETHTOOL_GSTRINGS
:
2557 rc
= ethtool_get_strings(dev
, useraddr
);
2559 case ETHTOOL_PHYS_ID
:
2560 rc
= ethtool_phys_id(dev
, useraddr
);
2562 case ETHTOOL_GSTATS
:
2563 rc
= ethtool_get_stats(dev
, useraddr
);
2565 case ETHTOOL_GPERMADDR
:
2566 rc
= ethtool_get_perm_addr(dev
, useraddr
);
2568 case ETHTOOL_GFLAGS
:
2569 rc
= ethtool_get_value(dev
, useraddr
, ethcmd
,
2570 __ethtool_get_flags
);
2572 case ETHTOOL_SFLAGS
:
2573 rc
= ethtool_set_value(dev
, useraddr
, __ethtool_set_flags
);
2575 case ETHTOOL_GPFLAGS
:
2576 rc
= ethtool_get_value(dev
, useraddr
, ethcmd
,
2577 dev
->ethtool_ops
->get_priv_flags
);
2579 case ETHTOOL_SPFLAGS
:
2580 rc
= ethtool_set_value(dev
, useraddr
,
2581 dev
->ethtool_ops
->set_priv_flags
);
2584 case ETHTOOL_GRXRINGS
:
2585 case ETHTOOL_GRXCLSRLCNT
:
2586 case ETHTOOL_GRXCLSRULE
:
2587 case ETHTOOL_GRXCLSRLALL
:
2588 rc
= ethtool_get_rxnfc(dev
, ethcmd
, useraddr
);
2591 case ETHTOOL_SRXCLSRLDEL
:
2592 case ETHTOOL_SRXCLSRLINS
:
2593 rc
= ethtool_set_rxnfc(dev
, ethcmd
, useraddr
);
2595 case ETHTOOL_FLASHDEV
:
2596 rc
= ethtool_flash_device(dev
, useraddr
);
2599 rc
= ethtool_reset(dev
, useraddr
);
2601 case ETHTOOL_GSSET_INFO
:
2602 rc
= ethtool_get_sset_info(dev
, useraddr
);
2604 case ETHTOOL_GRXFHINDIR
:
2605 rc
= ethtool_get_rxfh_indir(dev
, useraddr
);
2607 case ETHTOOL_SRXFHINDIR
:
2608 rc
= ethtool_set_rxfh_indir(dev
, useraddr
);
2611 rc
= ethtool_get_rxfh(dev
, useraddr
);
2614 rc
= ethtool_set_rxfh(dev
, useraddr
);
2616 case ETHTOOL_GFEATURES
:
2617 rc
= ethtool_get_features(dev
, useraddr
);
2619 case ETHTOOL_SFEATURES
:
2620 rc
= ethtool_set_features(dev
, useraddr
);
2622 case ETHTOOL_GTXCSUM
:
2623 case ETHTOOL_GRXCSUM
:
2629 rc
= ethtool_get_one_feature(dev
, useraddr
, ethcmd
);
2631 case ETHTOOL_STXCSUM
:
2632 case ETHTOOL_SRXCSUM
:
2638 rc
= ethtool_set_one_feature(dev
, useraddr
, ethcmd
);
2640 case ETHTOOL_GCHANNELS
:
2641 rc
= ethtool_get_channels(dev
, useraddr
);
2643 case ETHTOOL_SCHANNELS
:
2644 rc
= ethtool_set_channels(dev
, useraddr
);
2646 case ETHTOOL_SET_DUMP
:
2647 rc
= ethtool_set_dump(dev
, useraddr
);
2649 case ETHTOOL_GET_DUMP_FLAG
:
2650 rc
= ethtool_get_dump_flag(dev
, useraddr
);
2652 case ETHTOOL_GET_DUMP_DATA
:
2653 rc
= ethtool_get_dump_data(dev
, useraddr
);
2655 case ETHTOOL_GET_TS_INFO
:
2656 rc
= ethtool_get_ts_info(dev
, useraddr
);
2658 case ETHTOOL_GMODULEINFO
:
2659 rc
= ethtool_get_module_info(dev
, useraddr
);
2661 case ETHTOOL_GMODULEEEPROM
:
2662 rc
= ethtool_get_module_eeprom(dev
, useraddr
);
2664 case ETHTOOL_GTUNABLE
:
2665 rc
= ethtool_get_tunable(dev
, useraddr
);
2667 case ETHTOOL_STUNABLE
:
2668 rc
= ethtool_set_tunable(dev
, useraddr
);
2670 case ETHTOOL_GPHYSTATS
:
2671 rc
= ethtool_get_phy_stats(dev
, useraddr
);
2673 case ETHTOOL_PERQUEUE
:
2674 rc
= ethtool_set_per_queue(dev
, useraddr
);
2676 case ETHTOOL_GLINKSETTINGS
:
2677 rc
= ethtool_get_link_ksettings(dev
, useraddr
);
2679 case ETHTOOL_SLINKSETTINGS
:
2680 rc
= ethtool_set_link_ksettings(dev
, useraddr
);
2686 if (dev
->ethtool_ops
->complete
)
2687 dev
->ethtool_ops
->complete(dev
);
2689 if (old_features
!= dev
->features
)
2690 netdev_features_change(dev
);