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/sfp.h>
26 #include <linux/slab.h>
27 #include <linux/rtnetlink.h>
28 #include <linux/sched/signal.h>
29 #include <linux/net.h>
30 #include <net/xdp_sock.h>
33 * Some useful ethtool_ops methods that're device independent.
34 * If we find that all drivers want to do the same thing here,
35 * we can turn these into dev_() function calls.
38 u32
ethtool_op_get_link(struct net_device
*dev
)
40 return netif_carrier_ok(dev
) ? 1 : 0;
42 EXPORT_SYMBOL(ethtool_op_get_link
);
44 int ethtool_op_get_ts_info(struct net_device
*dev
, struct ethtool_ts_info
*info
)
46 info
->so_timestamping
=
47 SOF_TIMESTAMPING_TX_SOFTWARE
|
48 SOF_TIMESTAMPING_RX_SOFTWARE
|
49 SOF_TIMESTAMPING_SOFTWARE
;
53 EXPORT_SYMBOL(ethtool_op_get_ts_info
);
55 /* Handlers for each ethtool command */
57 #define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32)
59 static const char netdev_features_strings
[NETDEV_FEATURE_COUNT
][ETH_GSTRING_LEN
] = {
60 [NETIF_F_SG_BIT
] = "tx-scatter-gather",
61 [NETIF_F_IP_CSUM_BIT
] = "tx-checksum-ipv4",
62 [NETIF_F_HW_CSUM_BIT
] = "tx-checksum-ip-generic",
63 [NETIF_F_IPV6_CSUM_BIT
] = "tx-checksum-ipv6",
64 [NETIF_F_HIGHDMA_BIT
] = "highdma",
65 [NETIF_F_FRAGLIST_BIT
] = "tx-scatter-gather-fraglist",
66 [NETIF_F_HW_VLAN_CTAG_TX_BIT
] = "tx-vlan-hw-insert",
68 [NETIF_F_HW_VLAN_CTAG_RX_BIT
] = "rx-vlan-hw-parse",
69 [NETIF_F_HW_VLAN_CTAG_FILTER_BIT
] = "rx-vlan-filter",
70 [NETIF_F_HW_VLAN_STAG_TX_BIT
] = "tx-vlan-stag-hw-insert",
71 [NETIF_F_HW_VLAN_STAG_RX_BIT
] = "rx-vlan-stag-hw-parse",
72 [NETIF_F_HW_VLAN_STAG_FILTER_BIT
] = "rx-vlan-stag-filter",
73 [NETIF_F_VLAN_CHALLENGED_BIT
] = "vlan-challenged",
74 [NETIF_F_GSO_BIT
] = "tx-generic-segmentation",
75 [NETIF_F_LLTX_BIT
] = "tx-lockless",
76 [NETIF_F_NETNS_LOCAL_BIT
] = "netns-local",
77 [NETIF_F_GRO_BIT
] = "rx-gro",
78 [NETIF_F_GRO_HW_BIT
] = "rx-gro-hw",
79 [NETIF_F_LRO_BIT
] = "rx-lro",
81 [NETIF_F_TSO_BIT
] = "tx-tcp-segmentation",
82 [NETIF_F_GSO_ROBUST_BIT
] = "tx-gso-robust",
83 [NETIF_F_TSO_ECN_BIT
] = "tx-tcp-ecn-segmentation",
84 [NETIF_F_TSO_MANGLEID_BIT
] = "tx-tcp-mangleid-segmentation",
85 [NETIF_F_TSO6_BIT
] = "tx-tcp6-segmentation",
86 [NETIF_F_FSO_BIT
] = "tx-fcoe-segmentation",
87 [NETIF_F_GSO_GRE_BIT
] = "tx-gre-segmentation",
88 [NETIF_F_GSO_GRE_CSUM_BIT
] = "tx-gre-csum-segmentation",
89 [NETIF_F_GSO_IPXIP4_BIT
] = "tx-ipxip4-segmentation",
90 [NETIF_F_GSO_IPXIP6_BIT
] = "tx-ipxip6-segmentation",
91 [NETIF_F_GSO_UDP_TUNNEL_BIT
] = "tx-udp_tnl-segmentation",
92 [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT
] = "tx-udp_tnl-csum-segmentation",
93 [NETIF_F_GSO_PARTIAL_BIT
] = "tx-gso-partial",
94 [NETIF_F_GSO_SCTP_BIT
] = "tx-sctp-segmentation",
95 [NETIF_F_GSO_ESP_BIT
] = "tx-esp-segmentation",
96 [NETIF_F_GSO_UDP_L4_BIT
] = "tx-udp-segmentation",
98 [NETIF_F_FCOE_CRC_BIT
] = "tx-checksum-fcoe-crc",
99 [NETIF_F_SCTP_CRC_BIT
] = "tx-checksum-sctp",
100 [NETIF_F_FCOE_MTU_BIT
] = "fcoe-mtu",
101 [NETIF_F_NTUPLE_BIT
] = "rx-ntuple-filter",
102 [NETIF_F_RXHASH_BIT
] = "rx-hashing",
103 [NETIF_F_RXCSUM_BIT
] = "rx-checksum",
104 [NETIF_F_NOCACHE_COPY_BIT
] = "tx-nocache-copy",
105 [NETIF_F_LOOPBACK_BIT
] = "loopback",
106 [NETIF_F_RXFCS_BIT
] = "rx-fcs",
107 [NETIF_F_RXALL_BIT
] = "rx-all",
108 [NETIF_F_HW_L2FW_DOFFLOAD_BIT
] = "l2-fwd-offload",
109 [NETIF_F_HW_TC_BIT
] = "hw-tc-offload",
110 [NETIF_F_HW_ESP_BIT
] = "esp-hw-offload",
111 [NETIF_F_HW_ESP_TX_CSUM_BIT
] = "esp-tx-csum-hw-offload",
112 [NETIF_F_RX_UDP_TUNNEL_PORT_BIT
] = "rx-udp_tunnel-port-offload",
113 [NETIF_F_HW_TLS_RECORD_BIT
] = "tls-hw-record",
114 [NETIF_F_HW_TLS_TX_BIT
] = "tls-hw-tx-offload",
115 [NETIF_F_HW_TLS_RX_BIT
] = "tls-hw-rx-offload",
119 rss_hash_func_strings
[ETH_RSS_HASH_FUNCS_COUNT
][ETH_GSTRING_LEN
] = {
120 [ETH_RSS_HASH_TOP_BIT
] = "toeplitz",
121 [ETH_RSS_HASH_XOR_BIT
] = "xor",
122 [ETH_RSS_HASH_CRC32_BIT
] = "crc32",
126 tunable_strings
[__ETHTOOL_TUNABLE_COUNT
][ETH_GSTRING_LEN
] = {
127 [ETHTOOL_ID_UNSPEC
] = "Unspec",
128 [ETHTOOL_RX_COPYBREAK
] = "rx-copybreak",
129 [ETHTOOL_TX_COPYBREAK
] = "tx-copybreak",
130 [ETHTOOL_PFC_PREVENTION_TOUT
] = "pfc-prevention-tout",
134 phy_tunable_strings
[__ETHTOOL_PHY_TUNABLE_COUNT
][ETH_GSTRING_LEN
] = {
135 [ETHTOOL_ID_UNSPEC
] = "Unspec",
136 [ETHTOOL_PHY_DOWNSHIFT
] = "phy-downshift",
139 static int ethtool_get_features(struct net_device
*dev
, void __user
*useraddr
)
141 struct ethtool_gfeatures cmd
= {
142 .cmd
= ETHTOOL_GFEATURES
,
143 .size
= ETHTOOL_DEV_FEATURE_WORDS
,
145 struct ethtool_get_features_block features
[ETHTOOL_DEV_FEATURE_WORDS
];
146 u32 __user
*sizeaddr
;
150 /* in case feature bits run out again */
151 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS
* sizeof(u32
) > sizeof(netdev_features_t
));
153 for (i
= 0; i
< ETHTOOL_DEV_FEATURE_WORDS
; ++i
) {
154 features
[i
].available
= (u32
)(dev
->hw_features
>> (32 * i
));
155 features
[i
].requested
= (u32
)(dev
->wanted_features
>> (32 * i
));
156 features
[i
].active
= (u32
)(dev
->features
>> (32 * i
));
157 features
[i
].never_changed
=
158 (u32
)(NETIF_F_NEVER_CHANGE
>> (32 * i
));
161 sizeaddr
= useraddr
+ offsetof(struct ethtool_gfeatures
, size
);
162 if (get_user(copy_size
, sizeaddr
))
165 if (copy_size
> ETHTOOL_DEV_FEATURE_WORDS
)
166 copy_size
= ETHTOOL_DEV_FEATURE_WORDS
;
168 if (copy_to_user(useraddr
, &cmd
, sizeof(cmd
)))
170 useraddr
+= sizeof(cmd
);
171 if (copy_to_user(useraddr
, features
, copy_size
* sizeof(*features
)))
177 static int ethtool_set_features(struct net_device
*dev
, void __user
*useraddr
)
179 struct ethtool_sfeatures cmd
;
180 struct ethtool_set_features_block features
[ETHTOOL_DEV_FEATURE_WORDS
];
181 netdev_features_t wanted
= 0, valid
= 0;
184 if (copy_from_user(&cmd
, useraddr
, sizeof(cmd
)))
186 useraddr
+= sizeof(cmd
);
188 if (cmd
.size
!= ETHTOOL_DEV_FEATURE_WORDS
)
191 if (copy_from_user(features
, useraddr
, sizeof(features
)))
194 for (i
= 0; i
< ETHTOOL_DEV_FEATURE_WORDS
; ++i
) {
195 valid
|= (netdev_features_t
)features
[i
].valid
<< (32 * i
);
196 wanted
|= (netdev_features_t
)features
[i
].requested
<< (32 * i
);
199 if (valid
& ~NETIF_F_ETHTOOL_BITS
)
202 if (valid
& ~dev
->hw_features
) {
203 valid
&= dev
->hw_features
;
204 ret
|= ETHTOOL_F_UNSUPPORTED
;
207 dev
->wanted_features
&= ~valid
;
208 dev
->wanted_features
|= wanted
& valid
;
209 __netdev_update_features(dev
);
211 if ((dev
->wanted_features
^ dev
->features
) & valid
)
212 ret
|= ETHTOOL_F_WISH
;
217 static int __ethtool_get_sset_count(struct net_device
*dev
, int sset
)
219 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
221 if (sset
== ETH_SS_FEATURES
)
222 return ARRAY_SIZE(netdev_features_strings
);
224 if (sset
== ETH_SS_RSS_HASH_FUNCS
)
225 return ARRAY_SIZE(rss_hash_func_strings
);
227 if (sset
== ETH_SS_TUNABLES
)
228 return ARRAY_SIZE(tunable_strings
);
230 if (sset
== ETH_SS_PHY_TUNABLES
)
231 return ARRAY_SIZE(phy_tunable_strings
);
233 if (sset
== ETH_SS_PHY_STATS
&& dev
->phydev
&&
234 !ops
->get_ethtool_phy_stats
)
235 return phy_ethtool_get_sset_count(dev
->phydev
);
237 if (ops
->get_sset_count
&& ops
->get_strings
)
238 return ops
->get_sset_count(dev
, sset
);
243 static void __ethtool_get_strings(struct net_device
*dev
,
244 u32 stringset
, u8
*data
)
246 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
248 if (stringset
== ETH_SS_FEATURES
)
249 memcpy(data
, netdev_features_strings
,
250 sizeof(netdev_features_strings
));
251 else if (stringset
== ETH_SS_RSS_HASH_FUNCS
)
252 memcpy(data
, rss_hash_func_strings
,
253 sizeof(rss_hash_func_strings
));
254 else if (stringset
== ETH_SS_TUNABLES
)
255 memcpy(data
, tunable_strings
, sizeof(tunable_strings
));
256 else if (stringset
== ETH_SS_PHY_TUNABLES
)
257 memcpy(data
, phy_tunable_strings
, sizeof(phy_tunable_strings
));
258 else if (stringset
== ETH_SS_PHY_STATS
&& dev
->phydev
&&
259 !ops
->get_ethtool_phy_stats
)
260 phy_ethtool_get_strings(dev
->phydev
, data
);
262 /* ops->get_strings is valid because checked earlier */
263 ops
->get_strings(dev
, stringset
, data
);
266 static netdev_features_t
ethtool_get_feature_mask(u32 eth_cmd
)
268 /* feature masks of legacy discrete ethtool ops */
271 case ETHTOOL_GTXCSUM
:
272 case ETHTOOL_STXCSUM
:
273 return NETIF_F_CSUM_MASK
| NETIF_F_SCTP_CRC
;
274 case ETHTOOL_GRXCSUM
:
275 case ETHTOOL_SRXCSUM
:
276 return NETIF_F_RXCSUM
;
282 return NETIF_F_ALL_TSO
;
294 static int ethtool_get_one_feature(struct net_device
*dev
,
295 char __user
*useraddr
, u32 ethcmd
)
297 netdev_features_t mask
= ethtool_get_feature_mask(ethcmd
);
298 struct ethtool_value edata
= {
300 .data
= !!(dev
->features
& mask
),
303 if (copy_to_user(useraddr
, &edata
, sizeof(edata
)))
308 static int ethtool_set_one_feature(struct net_device
*dev
,
309 void __user
*useraddr
, u32 ethcmd
)
311 struct ethtool_value edata
;
312 netdev_features_t mask
;
314 if (copy_from_user(&edata
, useraddr
, sizeof(edata
)))
317 mask
= ethtool_get_feature_mask(ethcmd
);
318 mask
&= dev
->hw_features
;
323 dev
->wanted_features
|= mask
;
325 dev
->wanted_features
&= ~mask
;
327 __netdev_update_features(dev
);
332 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
333 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
334 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
335 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
338 static u32
__ethtool_get_flags(struct net_device
*dev
)
342 if (dev
->features
& NETIF_F_LRO
)
343 flags
|= ETH_FLAG_LRO
;
344 if (dev
->features
& NETIF_F_HW_VLAN_CTAG_RX
)
345 flags
|= ETH_FLAG_RXVLAN
;
346 if (dev
->features
& NETIF_F_HW_VLAN_CTAG_TX
)
347 flags
|= ETH_FLAG_TXVLAN
;
348 if (dev
->features
& NETIF_F_NTUPLE
)
349 flags
|= ETH_FLAG_NTUPLE
;
350 if (dev
->features
& NETIF_F_RXHASH
)
351 flags
|= ETH_FLAG_RXHASH
;
356 static int __ethtool_set_flags(struct net_device
*dev
, u32 data
)
358 netdev_features_t features
= 0, changed
;
360 if (data
& ~ETH_ALL_FLAGS
)
363 if (data
& ETH_FLAG_LRO
)
364 features
|= NETIF_F_LRO
;
365 if (data
& ETH_FLAG_RXVLAN
)
366 features
|= NETIF_F_HW_VLAN_CTAG_RX
;
367 if (data
& ETH_FLAG_TXVLAN
)
368 features
|= NETIF_F_HW_VLAN_CTAG_TX
;
369 if (data
& ETH_FLAG_NTUPLE
)
370 features
|= NETIF_F_NTUPLE
;
371 if (data
& ETH_FLAG_RXHASH
)
372 features
|= NETIF_F_RXHASH
;
374 /* allow changing only bits set in hw_features */
375 changed
= (features
^ dev
->features
) & ETH_ALL_FEATURES
;
376 if (changed
& ~dev
->hw_features
)
377 return (changed
& dev
->hw_features
) ? -EINVAL
: -EOPNOTSUPP
;
379 dev
->wanted_features
=
380 (dev
->wanted_features
& ~changed
) | (features
& changed
);
382 __netdev_update_features(dev
);
387 /* Given two link masks, AND them together and save the result in dst. */
388 void ethtool_intersect_link_masks(struct ethtool_link_ksettings
*dst
,
389 struct ethtool_link_ksettings
*src
)
391 unsigned int size
= BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS
);
392 unsigned int idx
= 0;
394 for (; idx
< size
; idx
++) {
395 dst
->link_modes
.supported
[idx
] &=
396 src
->link_modes
.supported
[idx
];
397 dst
->link_modes
.advertising
[idx
] &=
398 src
->link_modes
.advertising
[idx
];
401 EXPORT_SYMBOL(ethtool_intersect_link_masks
);
403 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst
,
406 bitmap_zero(dst
, __ETHTOOL_LINK_MODE_MASK_NBITS
);
409 EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode
);
411 /* return false if src had higher bits set. lower bits always updated. */
412 bool ethtool_convert_link_mode_to_legacy_u32(u32
*legacy_u32
,
413 const unsigned long *src
)
417 /* TODO: following test will soon always be true */
418 if (__ETHTOOL_LINK_MODE_MASK_NBITS
> 32) {
419 __ETHTOOL_DECLARE_LINK_MODE_MASK(ext
);
421 bitmap_zero(ext
, __ETHTOOL_LINK_MODE_MASK_NBITS
);
422 bitmap_fill(ext
, 32);
423 bitmap_complement(ext
, ext
, __ETHTOOL_LINK_MODE_MASK_NBITS
);
424 if (bitmap_intersects(ext
, src
,
425 __ETHTOOL_LINK_MODE_MASK_NBITS
)) {
426 /* src mask goes beyond bit 31 */
430 *legacy_u32
= src
[0];
433 EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32
);
435 /* return false if legacy contained non-0 deprecated fields
436 * maxtxpkt/maxrxpkt. rest of ksettings always updated
439 convert_legacy_settings_to_link_ksettings(
440 struct ethtool_link_ksettings
*link_ksettings
,
441 const struct ethtool_cmd
*legacy_settings
)
445 memset(link_ksettings
, 0, sizeof(*link_ksettings
));
447 /* This is used to tell users that driver is still using these
448 * deprecated legacy fields, and they should not use
449 * %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS
451 if (legacy_settings
->maxtxpkt
||
452 legacy_settings
->maxrxpkt
)
455 ethtool_convert_legacy_u32_to_link_mode(
456 link_ksettings
->link_modes
.supported
,
457 legacy_settings
->supported
);
458 ethtool_convert_legacy_u32_to_link_mode(
459 link_ksettings
->link_modes
.advertising
,
460 legacy_settings
->advertising
);
461 ethtool_convert_legacy_u32_to_link_mode(
462 link_ksettings
->link_modes
.lp_advertising
,
463 legacy_settings
->lp_advertising
);
464 link_ksettings
->base
.speed
465 = ethtool_cmd_speed(legacy_settings
);
466 link_ksettings
->base
.duplex
467 = legacy_settings
->duplex
;
468 link_ksettings
->base
.port
469 = legacy_settings
->port
;
470 link_ksettings
->base
.phy_address
471 = legacy_settings
->phy_address
;
472 link_ksettings
->base
.autoneg
473 = legacy_settings
->autoneg
;
474 link_ksettings
->base
.mdio_support
475 = legacy_settings
->mdio_support
;
476 link_ksettings
->base
.eth_tp_mdix
477 = legacy_settings
->eth_tp_mdix
;
478 link_ksettings
->base
.eth_tp_mdix_ctrl
479 = legacy_settings
->eth_tp_mdix_ctrl
;
483 /* return false if ksettings link modes had higher bits
484 * set. legacy_settings always updated (best effort)
487 convert_link_ksettings_to_legacy_settings(
488 struct ethtool_cmd
*legacy_settings
,
489 const struct ethtool_link_ksettings
*link_ksettings
)
493 memset(legacy_settings
, 0, sizeof(*legacy_settings
));
494 /* this also clears the deprecated fields in legacy structure:
500 retval
&= ethtool_convert_link_mode_to_legacy_u32(
501 &legacy_settings
->supported
,
502 link_ksettings
->link_modes
.supported
);
503 retval
&= ethtool_convert_link_mode_to_legacy_u32(
504 &legacy_settings
->advertising
,
505 link_ksettings
->link_modes
.advertising
);
506 retval
&= ethtool_convert_link_mode_to_legacy_u32(
507 &legacy_settings
->lp_advertising
,
508 link_ksettings
->link_modes
.lp_advertising
);
509 ethtool_cmd_speed_set(legacy_settings
, link_ksettings
->base
.speed
);
510 legacy_settings
->duplex
511 = link_ksettings
->base
.duplex
;
512 legacy_settings
->port
513 = link_ksettings
->base
.port
;
514 legacy_settings
->phy_address
515 = link_ksettings
->base
.phy_address
;
516 legacy_settings
->autoneg
517 = link_ksettings
->base
.autoneg
;
518 legacy_settings
->mdio_support
519 = link_ksettings
->base
.mdio_support
;
520 legacy_settings
->eth_tp_mdix
521 = link_ksettings
->base
.eth_tp_mdix
;
522 legacy_settings
->eth_tp_mdix_ctrl
523 = link_ksettings
->base
.eth_tp_mdix_ctrl
;
524 legacy_settings
->transceiver
525 = link_ksettings
->base
.transceiver
;
529 /* number of 32-bit words to store the user's link mode bitmaps */
530 #define __ETHTOOL_LINK_MODE_MASK_NU32 \
531 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
533 /* layout of the struct passed from/to userland */
534 struct ethtool_link_usettings
{
535 struct ethtool_link_settings base
;
537 __u32 supported
[__ETHTOOL_LINK_MODE_MASK_NU32
];
538 __u32 advertising
[__ETHTOOL_LINK_MODE_MASK_NU32
];
539 __u32 lp_advertising
[__ETHTOOL_LINK_MODE_MASK_NU32
];
543 /* Internal kernel helper to query a device ethtool_link_settings. */
544 int __ethtool_get_link_ksettings(struct net_device
*dev
,
545 struct ethtool_link_ksettings
*link_ksettings
)
549 if (!dev
->ethtool_ops
->get_link_ksettings
)
552 memset(link_ksettings
, 0, sizeof(*link_ksettings
));
553 return dev
->ethtool_ops
->get_link_ksettings(dev
, link_ksettings
);
555 EXPORT_SYMBOL(__ethtool_get_link_ksettings
);
557 /* convert ethtool_link_usettings in user space to a kernel internal
558 * ethtool_link_ksettings. return 0 on success, errno on error.
560 static int load_link_ksettings_from_user(struct ethtool_link_ksettings
*to
,
561 const void __user
*from
)
563 struct ethtool_link_usettings link_usettings
;
565 if (copy_from_user(&link_usettings
, from
, sizeof(link_usettings
)))
568 memcpy(&to
->base
, &link_usettings
.base
, sizeof(to
->base
));
569 bitmap_from_arr32(to
->link_modes
.supported
,
570 link_usettings
.link_modes
.supported
,
571 __ETHTOOL_LINK_MODE_MASK_NBITS
);
572 bitmap_from_arr32(to
->link_modes
.advertising
,
573 link_usettings
.link_modes
.advertising
,
574 __ETHTOOL_LINK_MODE_MASK_NBITS
);
575 bitmap_from_arr32(to
->link_modes
.lp_advertising
,
576 link_usettings
.link_modes
.lp_advertising
,
577 __ETHTOOL_LINK_MODE_MASK_NBITS
);
582 /* convert a kernel internal ethtool_link_ksettings to
583 * ethtool_link_usettings in user space. return 0 on success, errno on
587 store_link_ksettings_for_user(void __user
*to
,
588 const struct ethtool_link_ksettings
*from
)
590 struct ethtool_link_usettings link_usettings
;
592 memcpy(&link_usettings
.base
, &from
->base
, sizeof(link_usettings
));
593 bitmap_to_arr32(link_usettings
.link_modes
.supported
,
594 from
->link_modes
.supported
,
595 __ETHTOOL_LINK_MODE_MASK_NBITS
);
596 bitmap_to_arr32(link_usettings
.link_modes
.advertising
,
597 from
->link_modes
.advertising
,
598 __ETHTOOL_LINK_MODE_MASK_NBITS
);
599 bitmap_to_arr32(link_usettings
.link_modes
.lp_advertising
,
600 from
->link_modes
.lp_advertising
,
601 __ETHTOOL_LINK_MODE_MASK_NBITS
);
603 if (copy_to_user(to
, &link_usettings
, sizeof(link_usettings
)))
609 /* Query device for its ethtool_link_settings. */
610 static int ethtool_get_link_ksettings(struct net_device
*dev
,
611 void __user
*useraddr
)
614 struct ethtool_link_ksettings link_ksettings
;
617 if (!dev
->ethtool_ops
->get_link_ksettings
)
620 /* handle bitmap nbits handshake */
621 if (copy_from_user(&link_ksettings
.base
, useraddr
,
622 sizeof(link_ksettings
.base
)))
625 if (__ETHTOOL_LINK_MODE_MASK_NU32
626 != link_ksettings
.base
.link_mode_masks_nwords
) {
627 /* wrong link mode nbits requested */
628 memset(&link_ksettings
, 0, sizeof(link_ksettings
));
629 link_ksettings
.base
.cmd
= ETHTOOL_GLINKSETTINGS
;
630 /* send back number of words required as negative val */
631 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32
<= S8_MAX
,
632 "need too many bits for link modes!");
633 link_ksettings
.base
.link_mode_masks_nwords
634 = -((s8
)__ETHTOOL_LINK_MODE_MASK_NU32
);
636 /* copy the base fields back to user, not the link
639 if (copy_to_user(useraddr
, &link_ksettings
.base
,
640 sizeof(link_ksettings
.base
)))
646 /* handshake successful: user/kernel agree on
647 * link_mode_masks_nwords
650 memset(&link_ksettings
, 0, sizeof(link_ksettings
));
651 err
= dev
->ethtool_ops
->get_link_ksettings(dev
, &link_ksettings
);
655 /* make sure we tell the right values to user */
656 link_ksettings
.base
.cmd
= ETHTOOL_GLINKSETTINGS
;
657 link_ksettings
.base
.link_mode_masks_nwords
658 = __ETHTOOL_LINK_MODE_MASK_NU32
;
660 return store_link_ksettings_for_user(useraddr
, &link_ksettings
);
663 /* Update device ethtool_link_settings. */
664 static int ethtool_set_link_ksettings(struct net_device
*dev
,
665 void __user
*useraddr
)
668 struct ethtool_link_ksettings link_ksettings
;
672 if (!dev
->ethtool_ops
->set_link_ksettings
)
675 /* make sure nbits field has expected value */
676 if (copy_from_user(&link_ksettings
.base
, useraddr
,
677 sizeof(link_ksettings
.base
)))
680 if (__ETHTOOL_LINK_MODE_MASK_NU32
681 != link_ksettings
.base
.link_mode_masks_nwords
)
684 /* copy the whole structure, now that we know it has expected
687 err
= load_link_ksettings_from_user(&link_ksettings
, useraddr
);
691 /* re-check nwords field, just in case */
692 if (__ETHTOOL_LINK_MODE_MASK_NU32
693 != link_ksettings
.base
.link_mode_masks_nwords
)
696 return dev
->ethtool_ops
->set_link_ksettings(dev
, &link_ksettings
);
699 /* Query device for its ethtool_cmd settings.
701 * Backward compatibility note: for compatibility with legacy ethtool, this is
702 * now implemented via get_link_ksettings. When driver reports higher link mode
703 * bits, a kernel warning is logged once (with name of 1st driver/device) to
704 * recommend user to upgrade ethtool, but the command is successful (only the
705 * lower link mode bits reported back to user). Deprecated fields from
706 * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero.
708 static int ethtool_get_settings(struct net_device
*dev
, void __user
*useraddr
)
710 struct ethtool_link_ksettings link_ksettings
;
711 struct ethtool_cmd cmd
;
715 if (!dev
->ethtool_ops
->get_link_ksettings
)
718 memset(&link_ksettings
, 0, sizeof(link_ksettings
));
719 err
= dev
->ethtool_ops
->get_link_ksettings(dev
, &link_ksettings
);
722 convert_link_ksettings_to_legacy_settings(&cmd
, &link_ksettings
);
724 /* send a sensible cmd tag back to user */
725 cmd
.cmd
= ETHTOOL_GSET
;
727 if (copy_to_user(useraddr
, &cmd
, sizeof(cmd
)))
733 /* Update device link settings with given ethtool_cmd.
735 * Backward compatibility note: for compatibility with legacy ethtool, this is
736 * now always implemented via set_link_settings. When user's request updates
737 * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
738 * warning is logged once (with name of 1st driver/device) to recommend user to
739 * upgrade ethtool, and the request is rejected.
741 static int ethtool_set_settings(struct net_device
*dev
, void __user
*useraddr
)
743 struct ethtool_link_ksettings link_ksettings
;
744 struct ethtool_cmd cmd
;
748 if (copy_from_user(&cmd
, useraddr
, sizeof(cmd
)))
750 if (!dev
->ethtool_ops
->set_link_ksettings
)
753 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings
, &cmd
))
755 link_ksettings
.base
.link_mode_masks_nwords
=
756 __ETHTOOL_LINK_MODE_MASK_NU32
;
757 return dev
->ethtool_ops
->set_link_ksettings(dev
, &link_ksettings
);
760 static noinline_for_stack
int ethtool_get_drvinfo(struct net_device
*dev
,
761 void __user
*useraddr
)
763 struct ethtool_drvinfo info
;
764 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
766 memset(&info
, 0, sizeof(info
));
767 info
.cmd
= ETHTOOL_GDRVINFO
;
768 if (ops
->get_drvinfo
) {
769 ops
->get_drvinfo(dev
, &info
);
770 } else if (dev
->dev
.parent
&& dev
->dev
.parent
->driver
) {
771 strlcpy(info
.bus_info
, dev_name(dev
->dev
.parent
),
772 sizeof(info
.bus_info
));
773 strlcpy(info
.driver
, dev
->dev
.parent
->driver
->name
,
774 sizeof(info
.driver
));
780 * this method of obtaining string set info is deprecated;
781 * Use ETHTOOL_GSSET_INFO instead.
783 if (ops
->get_sset_count
) {
786 rc
= ops
->get_sset_count(dev
, ETH_SS_TEST
);
788 info
.testinfo_len
= rc
;
789 rc
= ops
->get_sset_count(dev
, ETH_SS_STATS
);
792 rc
= ops
->get_sset_count(dev
, ETH_SS_PRIV_FLAGS
);
794 info
.n_priv_flags
= rc
;
796 if (ops
->get_regs_len
) {
797 int ret
= ops
->get_regs_len(dev
);
800 info
.regdump_len
= ret
;
803 if (ops
->get_eeprom_len
)
804 info
.eedump_len
= ops
->get_eeprom_len(dev
);
806 if (copy_to_user(useraddr
, &info
, sizeof(info
)))
811 static noinline_for_stack
int ethtool_get_sset_info(struct net_device
*dev
,
812 void __user
*useraddr
)
814 struct ethtool_sset_info info
;
816 int i
, idx
= 0, n_bits
= 0, ret
, rc
;
817 u32
*info_buf
= NULL
;
819 if (copy_from_user(&info
, useraddr
, sizeof(info
)))
822 /* store copy of mask, because we zero struct later on */
823 sset_mask
= info
.sset_mask
;
827 /* calculate size of return buffer */
828 n_bits
= hweight64(sset_mask
);
830 memset(&info
, 0, sizeof(info
));
831 info
.cmd
= ETHTOOL_GSSET_INFO
;
833 info_buf
= kcalloc(n_bits
, sizeof(u32
), GFP_USER
);
838 * fill return buffer based on input bitmask and successful
839 * get_sset_count return
841 for (i
= 0; i
< 64; i
++) {
842 if (!(sset_mask
& (1ULL << i
)))
845 rc
= __ethtool_get_sset_count(dev
, i
);
847 info
.sset_mask
|= (1ULL << i
);
848 info_buf
[idx
++] = rc
;
853 if (copy_to_user(useraddr
, &info
, sizeof(info
)))
856 useraddr
+= offsetof(struct ethtool_sset_info
, data
);
857 if (copy_to_user(useraddr
, info_buf
, idx
* sizeof(u32
)))
867 static noinline_for_stack
int ethtool_set_rxnfc(struct net_device
*dev
,
868 u32 cmd
, void __user
*useraddr
)
870 struct ethtool_rxnfc info
;
871 size_t info_size
= sizeof(info
);
874 if (!dev
->ethtool_ops
->set_rxnfc
)
877 /* struct ethtool_rxnfc was originally defined for
878 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
879 * members. User-space might still be using that
881 if (cmd
== ETHTOOL_SRXFH
)
882 info_size
= (offsetof(struct ethtool_rxnfc
, data
) +
885 if (copy_from_user(&info
, useraddr
, info_size
))
888 rc
= dev
->ethtool_ops
->set_rxnfc(dev
, &info
);
892 if (cmd
== ETHTOOL_SRXCLSRLINS
&&
893 copy_to_user(useraddr
, &info
, info_size
))
899 static noinline_for_stack
int ethtool_get_rxnfc(struct net_device
*dev
,
900 u32 cmd
, void __user
*useraddr
)
902 struct ethtool_rxnfc info
;
903 size_t info_size
= sizeof(info
);
904 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
906 void *rule_buf
= NULL
;
911 /* struct ethtool_rxnfc was originally defined for
912 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
913 * members. User-space might still be using that
915 if (cmd
== ETHTOOL_GRXFH
)
916 info_size
= (offsetof(struct ethtool_rxnfc
, data
) +
919 if (copy_from_user(&info
, useraddr
, info_size
))
922 /* If FLOW_RSS was requested then user-space must be using the
923 * new definition, as FLOW_RSS is newer.
925 if (cmd
== ETHTOOL_GRXFH
&& info
.flow_type
& FLOW_RSS
) {
926 info_size
= sizeof(info
);
927 if (copy_from_user(&info
, useraddr
, info_size
))
929 /* Since malicious users may modify the original data,
930 * we need to check whether FLOW_RSS is still requested.
932 if (!(info
.flow_type
& FLOW_RSS
))
939 if (info
.cmd
== ETHTOOL_GRXCLSRLALL
) {
940 if (info
.rule_cnt
> 0) {
941 if (info
.rule_cnt
<= KMALLOC_MAX_SIZE
/ sizeof(u32
))
942 rule_buf
= kcalloc(info
.rule_cnt
, sizeof(u32
),
949 ret
= ops
->get_rxnfc(dev
, &info
, rule_buf
);
954 if (copy_to_user(useraddr
, &info
, info_size
))
958 useraddr
+= offsetof(struct ethtool_rxnfc
, rule_locs
);
959 if (copy_to_user(useraddr
, rule_buf
,
960 info
.rule_cnt
* sizeof(u32
)))
971 static int ethtool_copy_validate_indir(u32
*indir
, void __user
*useraddr
,
972 struct ethtool_rxnfc
*rx_rings
,
977 if (copy_from_user(indir
, useraddr
, size
* sizeof(indir
[0])))
980 /* Validate ring indices */
981 for (i
= 0; i
< size
; i
++)
982 if (indir
[i
] >= rx_rings
->data
)
988 u8 netdev_rss_key
[NETDEV_RSS_KEY_LEN
] __read_mostly
;
990 void netdev_rss_key_fill(void *buffer
, size_t len
)
992 BUG_ON(len
> sizeof(netdev_rss_key
));
993 net_get_random_once(netdev_rss_key
, sizeof(netdev_rss_key
));
994 memcpy(buffer
, netdev_rss_key
, len
);
996 EXPORT_SYMBOL(netdev_rss_key_fill
);
998 static int ethtool_get_max_rxfh_channel(struct net_device
*dev
, u32
*max
)
1000 u32 dev_size
, current_max
= 0;
1004 if (!dev
->ethtool_ops
->get_rxfh_indir_size
||
1005 !dev
->ethtool_ops
->get_rxfh
)
1007 dev_size
= dev
->ethtool_ops
->get_rxfh_indir_size(dev
);
1011 indir
= kcalloc(dev_size
, sizeof(indir
[0]), GFP_USER
);
1015 ret
= dev
->ethtool_ops
->get_rxfh(dev
, indir
, NULL
, NULL
);
1020 current_max
= max(current_max
, indir
[dev_size
]);
1029 static noinline_for_stack
int ethtool_get_rxfh_indir(struct net_device
*dev
,
1030 void __user
*useraddr
)
1032 u32 user_size
, dev_size
;
1036 if (!dev
->ethtool_ops
->get_rxfh_indir_size
||
1037 !dev
->ethtool_ops
->get_rxfh
)
1039 dev_size
= dev
->ethtool_ops
->get_rxfh_indir_size(dev
);
1043 if (copy_from_user(&user_size
,
1044 useraddr
+ offsetof(struct ethtool_rxfh_indir
, size
),
1048 if (copy_to_user(useraddr
+ offsetof(struct ethtool_rxfh_indir
, size
),
1049 &dev_size
, sizeof(dev_size
)))
1052 /* If the user buffer size is 0, this is just a query for the
1053 * device table size. Otherwise, if it's smaller than the
1054 * device table size it's an error.
1056 if (user_size
< dev_size
)
1057 return user_size
== 0 ? 0 : -EINVAL
;
1059 indir
= kcalloc(dev_size
, sizeof(indir
[0]), GFP_USER
);
1063 ret
= dev
->ethtool_ops
->get_rxfh(dev
, indir
, NULL
, NULL
);
1067 if (copy_to_user(useraddr
+
1068 offsetof(struct ethtool_rxfh_indir
, ring_index
[0]),
1069 indir
, dev_size
* sizeof(indir
[0])))
1077 static noinline_for_stack
int ethtool_set_rxfh_indir(struct net_device
*dev
,
1078 void __user
*useraddr
)
1080 struct ethtool_rxnfc rx_rings
;
1081 u32 user_size
, dev_size
, i
;
1083 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1085 u32 ringidx_offset
= offsetof(struct ethtool_rxfh_indir
, ring_index
[0]);
1087 if (!ops
->get_rxfh_indir_size
|| !ops
->set_rxfh
||
1091 dev_size
= ops
->get_rxfh_indir_size(dev
);
1095 if (copy_from_user(&user_size
,
1096 useraddr
+ offsetof(struct ethtool_rxfh_indir
, size
),
1100 if (user_size
!= 0 && user_size
!= dev_size
)
1103 indir
= kcalloc(dev_size
, sizeof(indir
[0]), GFP_USER
);
1107 rx_rings
.cmd
= ETHTOOL_GRXRINGS
;
1108 ret
= ops
->get_rxnfc(dev
, &rx_rings
, NULL
);
1112 if (user_size
== 0) {
1113 for (i
= 0; i
< dev_size
; i
++)
1114 indir
[i
] = ethtool_rxfh_indir_default(i
, rx_rings
.data
);
1116 ret
= ethtool_copy_validate_indir(indir
,
1117 useraddr
+ ringidx_offset
,
1124 ret
= ops
->set_rxfh(dev
, indir
, NULL
, ETH_RSS_HASH_NO_CHANGE
);
1128 /* indicate whether rxfh was set to default */
1130 dev
->priv_flags
&= ~IFF_RXFH_CONFIGURED
;
1132 dev
->priv_flags
|= IFF_RXFH_CONFIGURED
;
1139 static noinline_for_stack
int ethtool_get_rxfh(struct net_device
*dev
,
1140 void __user
*useraddr
)
1143 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1144 u32 user_indir_size
, user_key_size
;
1145 u32 dev_indir_size
= 0, dev_key_size
= 0;
1146 struct ethtool_rxfh rxfh
;
1157 if (ops
->get_rxfh_indir_size
)
1158 dev_indir_size
= ops
->get_rxfh_indir_size(dev
);
1159 if (ops
->get_rxfh_key_size
)
1160 dev_key_size
= ops
->get_rxfh_key_size(dev
);
1162 if (copy_from_user(&rxfh
, useraddr
, sizeof(rxfh
)))
1164 user_indir_size
= rxfh
.indir_size
;
1165 user_key_size
= rxfh
.key_size
;
1167 /* Check that reserved fields are 0 for now */
1168 if (rxfh
.rsvd8
[0] || rxfh
.rsvd8
[1] || rxfh
.rsvd8
[2] || rxfh
.rsvd32
)
1170 /* Most drivers don't handle rss_context, check it's 0 as well */
1171 if (rxfh
.rss_context
&& !ops
->get_rxfh_context
)
1174 rxfh
.indir_size
= dev_indir_size
;
1175 rxfh
.key_size
= dev_key_size
;
1176 if (copy_to_user(useraddr
, &rxfh
, sizeof(rxfh
)))
1179 if ((user_indir_size
&& (user_indir_size
!= dev_indir_size
)) ||
1180 (user_key_size
&& (user_key_size
!= dev_key_size
)))
1183 indir_bytes
= user_indir_size
* sizeof(indir
[0]);
1184 total_size
= indir_bytes
+ user_key_size
;
1185 rss_config
= kzalloc(total_size
, GFP_USER
);
1189 if (user_indir_size
)
1190 indir
= (u32
*)rss_config
;
1193 hkey
= rss_config
+ indir_bytes
;
1195 if (rxfh
.rss_context
)
1196 ret
= dev
->ethtool_ops
->get_rxfh_context(dev
, indir
, hkey
,
1200 ret
= dev
->ethtool_ops
->get_rxfh(dev
, indir
, hkey
, &dev_hfunc
);
1204 if (copy_to_user(useraddr
+ offsetof(struct ethtool_rxfh
, hfunc
),
1205 &dev_hfunc
, sizeof(rxfh
.hfunc
))) {
1207 } else if (copy_to_user(useraddr
+
1208 offsetof(struct ethtool_rxfh
, rss_config
[0]),
1209 rss_config
, total_size
)) {
1218 static noinline_for_stack
int ethtool_set_rxfh(struct net_device
*dev
,
1219 void __user
*useraddr
)
1222 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1223 struct ethtool_rxnfc rx_rings
;
1224 struct ethtool_rxfh rxfh
;
1225 u32 dev_indir_size
= 0, dev_key_size
= 0, i
;
1226 u32
*indir
= NULL
, indir_bytes
= 0;
1229 u32 rss_cfg_offset
= offsetof(struct ethtool_rxfh
, rss_config
[0]);
1230 bool delete = false;
1232 if (!ops
->get_rxnfc
|| !ops
->set_rxfh
)
1235 if (ops
->get_rxfh_indir_size
)
1236 dev_indir_size
= ops
->get_rxfh_indir_size(dev
);
1237 if (ops
->get_rxfh_key_size
)
1238 dev_key_size
= ops
->get_rxfh_key_size(dev
);
1240 if (copy_from_user(&rxfh
, useraddr
, sizeof(rxfh
)))
1243 /* Check that reserved fields are 0 for now */
1244 if (rxfh
.rsvd8
[0] || rxfh
.rsvd8
[1] || rxfh
.rsvd8
[2] || rxfh
.rsvd32
)
1246 /* Most drivers don't handle rss_context, check it's 0 as well */
1247 if (rxfh
.rss_context
&& !ops
->set_rxfh_context
)
1250 /* If either indir, hash key or function is valid, proceed further.
1251 * Must request at least one change: indir size, hash key or function.
1253 if ((rxfh
.indir_size
&&
1254 rxfh
.indir_size
!= ETH_RXFH_INDIR_NO_CHANGE
&&
1255 rxfh
.indir_size
!= dev_indir_size
) ||
1256 (rxfh
.key_size
&& (rxfh
.key_size
!= dev_key_size
)) ||
1257 (rxfh
.indir_size
== ETH_RXFH_INDIR_NO_CHANGE
&&
1258 rxfh
.key_size
== 0 && rxfh
.hfunc
== ETH_RSS_HASH_NO_CHANGE
))
1261 if (rxfh
.indir_size
!= ETH_RXFH_INDIR_NO_CHANGE
)
1262 indir_bytes
= dev_indir_size
* sizeof(indir
[0]);
1264 rss_config
= kzalloc(indir_bytes
+ rxfh
.key_size
, GFP_USER
);
1268 rx_rings
.cmd
= ETHTOOL_GRXRINGS
;
1269 ret
= ops
->get_rxnfc(dev
, &rx_rings
, NULL
);
1273 /* rxfh.indir_size == 0 means reset the indir table to default (master
1274 * context) or delete the context (other RSS contexts).
1275 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
1277 if (rxfh
.indir_size
&&
1278 rxfh
.indir_size
!= ETH_RXFH_INDIR_NO_CHANGE
) {
1279 indir
= (u32
*)rss_config
;
1280 ret
= ethtool_copy_validate_indir(indir
,
1281 useraddr
+ rss_cfg_offset
,
1286 } else if (rxfh
.indir_size
== 0) {
1287 if (rxfh
.rss_context
== 0) {
1288 indir
= (u32
*)rss_config
;
1289 for (i
= 0; i
< dev_indir_size
; i
++)
1290 indir
[i
] = ethtool_rxfh_indir_default(i
, rx_rings
.data
);
1296 if (rxfh
.key_size
) {
1297 hkey
= rss_config
+ indir_bytes
;
1298 if (copy_from_user(hkey
,
1299 useraddr
+ rss_cfg_offset
+ indir_bytes
,
1306 if (rxfh
.rss_context
)
1307 ret
= ops
->set_rxfh_context(dev
, indir
, hkey
, rxfh
.hfunc
,
1308 &rxfh
.rss_context
, delete);
1310 ret
= ops
->set_rxfh(dev
, indir
, hkey
, rxfh
.hfunc
);
1314 if (copy_to_user(useraddr
+ offsetof(struct ethtool_rxfh
, rss_context
),
1315 &rxfh
.rss_context
, sizeof(rxfh
.rss_context
)))
1318 if (!rxfh
.rss_context
) {
1319 /* indicate whether rxfh was set to default */
1320 if (rxfh
.indir_size
== 0)
1321 dev
->priv_flags
&= ~IFF_RXFH_CONFIGURED
;
1322 else if (rxfh
.indir_size
!= ETH_RXFH_INDIR_NO_CHANGE
)
1323 dev
->priv_flags
|= IFF_RXFH_CONFIGURED
;
1331 static int ethtool_get_regs(struct net_device
*dev
, char __user
*useraddr
)
1333 struct ethtool_regs regs
;
1334 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1338 if (!ops
->get_regs
|| !ops
->get_regs_len
)
1341 if (copy_from_user(®s
, useraddr
, sizeof(regs
)))
1344 reglen
= ops
->get_regs_len(dev
);
1348 if (regs
.len
> reglen
)
1353 regbuf
= vzalloc(reglen
);
1358 ops
->get_regs(dev
, ®s
, regbuf
);
1361 if (copy_to_user(useraddr
, ®s
, sizeof(regs
)))
1363 useraddr
+= offsetof(struct ethtool_regs
, data
);
1364 if (regbuf
&& copy_to_user(useraddr
, regbuf
, regs
.len
))
1373 static int ethtool_reset(struct net_device
*dev
, char __user
*useraddr
)
1375 struct ethtool_value reset
;
1378 if (!dev
->ethtool_ops
->reset
)
1381 if (copy_from_user(&reset
, useraddr
, sizeof(reset
)))
1384 ret
= dev
->ethtool_ops
->reset(dev
, &reset
.data
);
1388 if (copy_to_user(useraddr
, &reset
, sizeof(reset
)))
1393 static int ethtool_get_wol(struct net_device
*dev
, char __user
*useraddr
)
1395 struct ethtool_wolinfo wol
= { .cmd
= ETHTOOL_GWOL
};
1397 if (!dev
->ethtool_ops
->get_wol
)
1400 dev
->ethtool_ops
->get_wol(dev
, &wol
);
1402 if (copy_to_user(useraddr
, &wol
, sizeof(wol
)))
1407 static int ethtool_set_wol(struct net_device
*dev
, char __user
*useraddr
)
1409 struct ethtool_wolinfo wol
;
1412 if (!dev
->ethtool_ops
->set_wol
)
1415 if (copy_from_user(&wol
, useraddr
, sizeof(wol
)))
1418 ret
= dev
->ethtool_ops
->set_wol(dev
, &wol
);
1422 dev
->wol_enabled
= !!wol
.wolopts
;
1427 static int ethtool_get_eee(struct net_device
*dev
, char __user
*useraddr
)
1429 struct ethtool_eee edata
;
1432 if (!dev
->ethtool_ops
->get_eee
)
1435 memset(&edata
, 0, sizeof(struct ethtool_eee
));
1436 edata
.cmd
= ETHTOOL_GEEE
;
1437 rc
= dev
->ethtool_ops
->get_eee(dev
, &edata
);
1442 if (copy_to_user(useraddr
, &edata
, sizeof(edata
)))
1448 static int ethtool_set_eee(struct net_device
*dev
, char __user
*useraddr
)
1450 struct ethtool_eee edata
;
1452 if (!dev
->ethtool_ops
->set_eee
)
1455 if (copy_from_user(&edata
, useraddr
, sizeof(edata
)))
1458 return dev
->ethtool_ops
->set_eee(dev
, &edata
);
1461 static int ethtool_nway_reset(struct net_device
*dev
)
1463 if (!dev
->ethtool_ops
->nway_reset
)
1466 return dev
->ethtool_ops
->nway_reset(dev
);
1469 static int ethtool_get_link(struct net_device
*dev
, char __user
*useraddr
)
1471 struct ethtool_value edata
= { .cmd
= ETHTOOL_GLINK
};
1473 if (!dev
->ethtool_ops
->get_link
)
1476 edata
.data
= netif_running(dev
) && dev
->ethtool_ops
->get_link(dev
);
1478 if (copy_to_user(useraddr
, &edata
, sizeof(edata
)))
1483 static int ethtool_get_any_eeprom(struct net_device
*dev
, void __user
*useraddr
,
1484 int (*getter
)(struct net_device
*,
1485 struct ethtool_eeprom
*, u8
*),
1488 struct ethtool_eeprom eeprom
;
1489 void __user
*userbuf
= useraddr
+ sizeof(eeprom
);
1490 u32 bytes_remaining
;
1494 if (copy_from_user(&eeprom
, useraddr
, sizeof(eeprom
)))
1497 /* Check for wrap and zero */
1498 if (eeprom
.offset
+ eeprom
.len
<= eeprom
.offset
)
1501 /* Check for exceeding total eeprom len */
1502 if (eeprom
.offset
+ eeprom
.len
> total_len
)
1505 data
= kmalloc(PAGE_SIZE
, GFP_USER
);
1509 bytes_remaining
= eeprom
.len
;
1510 while (bytes_remaining
> 0) {
1511 eeprom
.len
= min(bytes_remaining
, (u32
)PAGE_SIZE
);
1513 ret
= getter(dev
, &eeprom
, data
);
1516 if (copy_to_user(userbuf
, data
, eeprom
.len
)) {
1520 userbuf
+= eeprom
.len
;
1521 eeprom
.offset
+= eeprom
.len
;
1522 bytes_remaining
-= eeprom
.len
;
1525 eeprom
.len
= userbuf
- (useraddr
+ sizeof(eeprom
));
1526 eeprom
.offset
-= eeprom
.len
;
1527 if (copy_to_user(useraddr
, &eeprom
, sizeof(eeprom
)))
1534 static int ethtool_get_eeprom(struct net_device
*dev
, void __user
*useraddr
)
1536 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1538 if (!ops
->get_eeprom
|| !ops
->get_eeprom_len
||
1539 !ops
->get_eeprom_len(dev
))
1542 return ethtool_get_any_eeprom(dev
, useraddr
, ops
->get_eeprom
,
1543 ops
->get_eeprom_len(dev
));
1546 static int ethtool_set_eeprom(struct net_device
*dev
, void __user
*useraddr
)
1548 struct ethtool_eeprom eeprom
;
1549 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1550 void __user
*userbuf
= useraddr
+ sizeof(eeprom
);
1551 u32 bytes_remaining
;
1555 if (!ops
->set_eeprom
|| !ops
->get_eeprom_len
||
1556 !ops
->get_eeprom_len(dev
))
1559 if (copy_from_user(&eeprom
, useraddr
, sizeof(eeprom
)))
1562 /* Check for wrap and zero */
1563 if (eeprom
.offset
+ eeprom
.len
<= eeprom
.offset
)
1566 /* Check for exceeding total eeprom len */
1567 if (eeprom
.offset
+ eeprom
.len
> ops
->get_eeprom_len(dev
))
1570 data
= kmalloc(PAGE_SIZE
, GFP_USER
);
1574 bytes_remaining
= eeprom
.len
;
1575 while (bytes_remaining
> 0) {
1576 eeprom
.len
= min(bytes_remaining
, (u32
)PAGE_SIZE
);
1578 if (copy_from_user(data
, userbuf
, eeprom
.len
)) {
1582 ret
= ops
->set_eeprom(dev
, &eeprom
, data
);
1585 userbuf
+= eeprom
.len
;
1586 eeprom
.offset
+= eeprom
.len
;
1587 bytes_remaining
-= eeprom
.len
;
1594 static noinline_for_stack
int ethtool_get_coalesce(struct net_device
*dev
,
1595 void __user
*useraddr
)
1597 struct ethtool_coalesce coalesce
= { .cmd
= ETHTOOL_GCOALESCE
};
1599 if (!dev
->ethtool_ops
->get_coalesce
)
1602 dev
->ethtool_ops
->get_coalesce(dev
, &coalesce
);
1604 if (copy_to_user(useraddr
, &coalesce
, sizeof(coalesce
)))
1609 static noinline_for_stack
int ethtool_set_coalesce(struct net_device
*dev
,
1610 void __user
*useraddr
)
1612 struct ethtool_coalesce coalesce
;
1614 if (!dev
->ethtool_ops
->set_coalesce
)
1617 if (copy_from_user(&coalesce
, useraddr
, sizeof(coalesce
)))
1620 return dev
->ethtool_ops
->set_coalesce(dev
, &coalesce
);
1623 static int ethtool_get_ringparam(struct net_device
*dev
, void __user
*useraddr
)
1625 struct ethtool_ringparam ringparam
= { .cmd
= ETHTOOL_GRINGPARAM
};
1627 if (!dev
->ethtool_ops
->get_ringparam
)
1630 dev
->ethtool_ops
->get_ringparam(dev
, &ringparam
);
1632 if (copy_to_user(useraddr
, &ringparam
, sizeof(ringparam
)))
1637 static int ethtool_set_ringparam(struct net_device
*dev
, void __user
*useraddr
)
1639 struct ethtool_ringparam ringparam
, max
= { .cmd
= ETHTOOL_GRINGPARAM
};
1641 if (!dev
->ethtool_ops
->set_ringparam
|| !dev
->ethtool_ops
->get_ringparam
)
1644 if (copy_from_user(&ringparam
, useraddr
, sizeof(ringparam
)))
1647 dev
->ethtool_ops
->get_ringparam(dev
, &max
);
1649 /* ensure new ring parameters are within the maximums */
1650 if (ringparam
.rx_pending
> max
.rx_max_pending
||
1651 ringparam
.rx_mini_pending
> max
.rx_mini_max_pending
||
1652 ringparam
.rx_jumbo_pending
> max
.rx_jumbo_max_pending
||
1653 ringparam
.tx_pending
> max
.tx_max_pending
)
1656 return dev
->ethtool_ops
->set_ringparam(dev
, &ringparam
);
1659 static noinline_for_stack
int ethtool_get_channels(struct net_device
*dev
,
1660 void __user
*useraddr
)
1662 struct ethtool_channels channels
= { .cmd
= ETHTOOL_GCHANNELS
};
1664 if (!dev
->ethtool_ops
->get_channels
)
1667 dev
->ethtool_ops
->get_channels(dev
, &channels
);
1669 if (copy_to_user(useraddr
, &channels
, sizeof(channels
)))
1674 static noinline_for_stack
int ethtool_set_channels(struct net_device
*dev
,
1675 void __user
*useraddr
)
1677 struct ethtool_channels channels
, curr
= { .cmd
= ETHTOOL_GCHANNELS
};
1678 u16 from_channel
, to_channel
;
1679 u32 max_rx_in_use
= 0;
1682 if (!dev
->ethtool_ops
->set_channels
|| !dev
->ethtool_ops
->get_channels
)
1685 if (copy_from_user(&channels
, useraddr
, sizeof(channels
)))
1688 dev
->ethtool_ops
->get_channels(dev
, &curr
);
1690 /* ensure new counts are within the maximums */
1691 if (channels
.rx_count
> curr
.max_rx
||
1692 channels
.tx_count
> curr
.max_tx
||
1693 channels
.combined_count
> curr
.max_combined
||
1694 channels
.other_count
> curr
.max_other
)
1697 /* ensure the new Rx count fits within the configured Rx flow
1698 * indirection table settings */
1699 if (netif_is_rxfh_configured(dev
) &&
1700 !ethtool_get_max_rxfh_channel(dev
, &max_rx_in_use
) &&
1701 (channels
.combined_count
+ channels
.rx_count
) <= max_rx_in_use
)
1704 /* Disabling channels, query zero-copy AF_XDP sockets */
1705 from_channel
= channels
.combined_count
+
1706 min(channels
.rx_count
, channels
.tx_count
);
1707 to_channel
= curr
.combined_count
+ max(curr
.rx_count
, curr
.tx_count
);
1708 for (i
= from_channel
; i
< to_channel
; i
++)
1709 if (xdp_get_umem_from_qid(dev
, i
))
1712 return dev
->ethtool_ops
->set_channels(dev
, &channels
);
1715 static int ethtool_get_pauseparam(struct net_device
*dev
, void __user
*useraddr
)
1717 struct ethtool_pauseparam pauseparam
= { ETHTOOL_GPAUSEPARAM
};
1719 if (!dev
->ethtool_ops
->get_pauseparam
)
1722 dev
->ethtool_ops
->get_pauseparam(dev
, &pauseparam
);
1724 if (copy_to_user(useraddr
, &pauseparam
, sizeof(pauseparam
)))
1729 static int ethtool_set_pauseparam(struct net_device
*dev
, void __user
*useraddr
)
1731 struct ethtool_pauseparam pauseparam
;
1733 if (!dev
->ethtool_ops
->set_pauseparam
)
1736 if (copy_from_user(&pauseparam
, useraddr
, sizeof(pauseparam
)))
1739 return dev
->ethtool_ops
->set_pauseparam(dev
, &pauseparam
);
1742 static int ethtool_self_test(struct net_device
*dev
, char __user
*useraddr
)
1744 struct ethtool_test test
;
1745 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1749 if (!ops
->self_test
|| !ops
->get_sset_count
)
1752 test_len
= ops
->get_sset_count(dev
, ETH_SS_TEST
);
1755 WARN_ON(test_len
== 0);
1757 if (copy_from_user(&test
, useraddr
, sizeof(test
)))
1760 test
.len
= test_len
;
1761 data
= kmalloc_array(test_len
, sizeof(u64
), GFP_USER
);
1765 ops
->self_test(dev
, &test
, data
);
1768 if (copy_to_user(useraddr
, &test
, sizeof(test
)))
1770 useraddr
+= sizeof(test
);
1771 if (copy_to_user(useraddr
, data
, test
.len
* sizeof(u64
)))
1780 static int ethtool_get_strings(struct net_device
*dev
, void __user
*useraddr
)
1782 struct ethtool_gstrings gstrings
;
1786 if (copy_from_user(&gstrings
, useraddr
, sizeof(gstrings
)))
1789 ret
= __ethtool_get_sset_count(dev
, gstrings
.string_set
);
1792 if (ret
> S32_MAX
/ ETH_GSTRING_LEN
)
1797 data
= vzalloc(array_size(gstrings
.len
, ETH_GSTRING_LEN
));
1798 if (gstrings
.len
&& !data
)
1801 __ethtool_get_strings(dev
, gstrings
.string_set
, data
);
1804 if (copy_to_user(useraddr
, &gstrings
, sizeof(gstrings
)))
1806 useraddr
+= sizeof(gstrings
);
1808 copy_to_user(useraddr
, data
, gstrings
.len
* ETH_GSTRING_LEN
))
1817 static int ethtool_phys_id(struct net_device
*dev
, void __user
*useraddr
)
1819 struct ethtool_value id
;
1821 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1824 if (!ops
->set_phys_id
)
1830 if (copy_from_user(&id
, useraddr
, sizeof(id
)))
1833 rc
= ops
->set_phys_id(dev
, ETHTOOL_ID_ACTIVE
);
1837 /* Drop the RTNL lock while waiting, but prevent reentry or
1838 * removal of the device.
1845 /* Driver will handle this itself */
1846 schedule_timeout_interruptible(
1847 id
.data
? (id
.data
* HZ
) : MAX_SCHEDULE_TIMEOUT
);
1849 /* Driver expects to be called at twice the frequency in rc */
1850 int n
= rc
* 2, i
, interval
= HZ
/ n
;
1852 /* Count down seconds */
1854 /* Count down iterations per second */
1858 rc
= ops
->set_phys_id(dev
,
1859 (i
& 1) ? ETHTOOL_ID_OFF
: ETHTOOL_ID_ON
);
1863 schedule_timeout_interruptible(interval
);
1864 } while (!signal_pending(current
) && --i
!= 0);
1865 } while (!signal_pending(current
) &&
1866 (id
.data
== 0 || --id
.data
!= 0));
1873 (void) ops
->set_phys_id(dev
, ETHTOOL_ID_INACTIVE
);
1877 static int ethtool_get_stats(struct net_device
*dev
, void __user
*useraddr
)
1879 struct ethtool_stats stats
;
1880 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1884 if (!ops
->get_ethtool_stats
|| !ops
->get_sset_count
)
1887 n_stats
= ops
->get_sset_count(dev
, ETH_SS_STATS
);
1890 if (n_stats
> S32_MAX
/ sizeof(u64
))
1892 WARN_ON_ONCE(!n_stats
);
1893 if (copy_from_user(&stats
, useraddr
, sizeof(stats
)))
1896 stats
.n_stats
= n_stats
;
1897 data
= vzalloc(array_size(n_stats
, sizeof(u64
)));
1898 if (n_stats
&& !data
)
1901 ops
->get_ethtool_stats(dev
, &stats
, data
);
1904 if (copy_to_user(useraddr
, &stats
, sizeof(stats
)))
1906 useraddr
+= sizeof(stats
);
1907 if (n_stats
&& copy_to_user(useraddr
, data
, n_stats
* sizeof(u64
)))
1916 static int ethtool_get_phy_stats(struct net_device
*dev
, void __user
*useraddr
)
1918 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
1919 struct phy_device
*phydev
= dev
->phydev
;
1920 struct ethtool_stats stats
;
1924 if (!phydev
&& (!ops
->get_ethtool_phy_stats
|| !ops
->get_sset_count
))
1927 if (dev
->phydev
&& !ops
->get_ethtool_phy_stats
)
1928 n_stats
= phy_ethtool_get_sset_count(dev
->phydev
);
1930 n_stats
= ops
->get_sset_count(dev
, ETH_SS_PHY_STATS
);
1933 if (n_stats
> S32_MAX
/ sizeof(u64
))
1935 WARN_ON_ONCE(!n_stats
);
1937 if (copy_from_user(&stats
, useraddr
, sizeof(stats
)))
1940 stats
.n_stats
= n_stats
;
1941 data
= vzalloc(array_size(n_stats
, sizeof(u64
)));
1942 if (n_stats
&& !data
)
1945 if (dev
->phydev
&& !ops
->get_ethtool_phy_stats
) {
1946 ret
= phy_ethtool_get_stats(dev
->phydev
, &stats
, data
);
1950 ops
->get_ethtool_phy_stats(dev
, &stats
, data
);
1954 if (copy_to_user(useraddr
, &stats
, sizeof(stats
)))
1956 useraddr
+= sizeof(stats
);
1957 if (n_stats
&& copy_to_user(useraddr
, data
, n_stats
* sizeof(u64
)))
1966 static int ethtool_get_perm_addr(struct net_device
*dev
, void __user
*useraddr
)
1968 struct ethtool_perm_addr epaddr
;
1970 if (copy_from_user(&epaddr
, useraddr
, sizeof(epaddr
)))
1973 if (epaddr
.size
< dev
->addr_len
)
1975 epaddr
.size
= dev
->addr_len
;
1977 if (copy_to_user(useraddr
, &epaddr
, sizeof(epaddr
)))
1979 useraddr
+= sizeof(epaddr
);
1980 if (copy_to_user(useraddr
, dev
->perm_addr
, epaddr
.size
))
1985 static int ethtool_get_value(struct net_device
*dev
, char __user
*useraddr
,
1986 u32 cmd
, u32 (*actor
)(struct net_device
*))
1988 struct ethtool_value edata
= { .cmd
= cmd
};
1993 edata
.data
= actor(dev
);
1995 if (copy_to_user(useraddr
, &edata
, sizeof(edata
)))
2000 static int ethtool_set_value_void(struct net_device
*dev
, char __user
*useraddr
,
2001 void (*actor
)(struct net_device
*, u32
))
2003 struct ethtool_value edata
;
2008 if (copy_from_user(&edata
, useraddr
, sizeof(edata
)))
2011 actor(dev
, edata
.data
);
2015 static int ethtool_set_value(struct net_device
*dev
, char __user
*useraddr
,
2016 int (*actor
)(struct net_device
*, u32
))
2018 struct ethtool_value edata
;
2023 if (copy_from_user(&edata
, useraddr
, sizeof(edata
)))
2026 return actor(dev
, edata
.data
);
2029 static noinline_for_stack
int ethtool_flash_device(struct net_device
*dev
,
2030 char __user
*useraddr
)
2032 struct ethtool_flash efl
;
2034 if (copy_from_user(&efl
, useraddr
, sizeof(efl
)))
2037 if (!dev
->ethtool_ops
->flash_device
)
2040 efl
.data
[ETHTOOL_FLASH_MAX_FILENAME
- 1] = 0;
2042 return dev
->ethtool_ops
->flash_device(dev
, &efl
);
2045 static int ethtool_set_dump(struct net_device
*dev
,
2046 void __user
*useraddr
)
2048 struct ethtool_dump dump
;
2050 if (!dev
->ethtool_ops
->set_dump
)
2053 if (copy_from_user(&dump
, useraddr
, sizeof(dump
)))
2056 return dev
->ethtool_ops
->set_dump(dev
, &dump
);
2059 static int ethtool_get_dump_flag(struct net_device
*dev
,
2060 void __user
*useraddr
)
2063 struct ethtool_dump dump
;
2064 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2066 if (!ops
->get_dump_flag
)
2069 if (copy_from_user(&dump
, useraddr
, sizeof(dump
)))
2072 ret
= ops
->get_dump_flag(dev
, &dump
);
2076 if (copy_to_user(useraddr
, &dump
, sizeof(dump
)))
2081 static int ethtool_get_dump_data(struct net_device
*dev
,
2082 void __user
*useraddr
)
2086 struct ethtool_dump dump
, tmp
;
2087 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2090 if (!ops
->get_dump_data
|| !ops
->get_dump_flag
)
2093 if (copy_from_user(&dump
, useraddr
, sizeof(dump
)))
2096 memset(&tmp
, 0, sizeof(tmp
));
2097 tmp
.cmd
= ETHTOOL_GET_DUMP_FLAG
;
2098 ret
= ops
->get_dump_flag(dev
, &tmp
);
2102 len
= min(tmp
.len
, dump
.len
);
2106 /* Don't ever let the driver think there's more space available
2107 * than it requested with .get_dump_flag().
2111 /* Always allocate enough space to hold the whole thing so that the
2112 * driver does not need to check the length and bother with partial
2115 data
= vzalloc(tmp
.len
);
2118 ret
= ops
->get_dump_data(dev
, &dump
, data
);
2122 /* There are two sane possibilities:
2123 * 1. The driver's .get_dump_data() does not touch dump.len.
2124 * 2. Or it may set dump.len to how much it really writes, which
2125 * should be tmp.len (or len if it can do a partial dump).
2126 * In any case respond to userspace with the actual length of data
2129 WARN_ON(dump
.len
!= len
&& dump
.len
!= tmp
.len
);
2132 if (copy_to_user(useraddr
, &dump
, sizeof(dump
))) {
2136 useraddr
+= offsetof(struct ethtool_dump
, data
);
2137 if (copy_to_user(useraddr
, data
, len
))
2144 static int ethtool_get_ts_info(struct net_device
*dev
, void __user
*useraddr
)
2147 struct ethtool_ts_info info
;
2148 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2149 struct phy_device
*phydev
= dev
->phydev
;
2151 memset(&info
, 0, sizeof(info
));
2152 info
.cmd
= ETHTOOL_GET_TS_INFO
;
2154 if (phydev
&& phydev
->drv
&& phydev
->drv
->ts_info
) {
2155 err
= phydev
->drv
->ts_info(phydev
, &info
);
2156 } else if (ops
->get_ts_info
) {
2157 err
= ops
->get_ts_info(dev
, &info
);
2159 info
.so_timestamping
=
2160 SOF_TIMESTAMPING_RX_SOFTWARE
|
2161 SOF_TIMESTAMPING_SOFTWARE
;
2162 info
.phc_index
= -1;
2168 if (copy_to_user(useraddr
, &info
, sizeof(info
)))
2174 static int __ethtool_get_module_info(struct net_device
*dev
,
2175 struct ethtool_modinfo
*modinfo
)
2177 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2178 struct phy_device
*phydev
= dev
->phydev
;
2181 return sfp_get_module_info(dev
->sfp_bus
, modinfo
);
2183 if (phydev
&& phydev
->drv
&& phydev
->drv
->module_info
)
2184 return phydev
->drv
->module_info(phydev
, modinfo
);
2186 if (ops
->get_module_info
)
2187 return ops
->get_module_info(dev
, modinfo
);
2192 static int ethtool_get_module_info(struct net_device
*dev
,
2193 void __user
*useraddr
)
2196 struct ethtool_modinfo modinfo
;
2198 if (copy_from_user(&modinfo
, useraddr
, sizeof(modinfo
)))
2201 ret
= __ethtool_get_module_info(dev
, &modinfo
);
2205 if (copy_to_user(useraddr
, &modinfo
, sizeof(modinfo
)))
2211 static int __ethtool_get_module_eeprom(struct net_device
*dev
,
2212 struct ethtool_eeprom
*ee
, u8
*data
)
2214 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2215 struct phy_device
*phydev
= dev
->phydev
;
2218 return sfp_get_module_eeprom(dev
->sfp_bus
, ee
, data
);
2220 if (phydev
&& phydev
->drv
&& phydev
->drv
->module_eeprom
)
2221 return phydev
->drv
->module_eeprom(phydev
, ee
, data
);
2223 if (ops
->get_module_eeprom
)
2224 return ops
->get_module_eeprom(dev
, ee
, data
);
2229 static int ethtool_get_module_eeprom(struct net_device
*dev
,
2230 void __user
*useraddr
)
2233 struct ethtool_modinfo modinfo
;
2235 ret
= __ethtool_get_module_info(dev
, &modinfo
);
2239 return ethtool_get_any_eeprom(dev
, useraddr
,
2240 __ethtool_get_module_eeprom
,
2241 modinfo
.eeprom_len
);
2244 static int ethtool_tunable_valid(const struct ethtool_tunable
*tuna
)
2247 case ETHTOOL_RX_COPYBREAK
:
2248 case ETHTOOL_TX_COPYBREAK
:
2249 if (tuna
->len
!= sizeof(u32
) ||
2250 tuna
->type_id
!= ETHTOOL_TUNABLE_U32
)
2253 case ETHTOOL_PFC_PREVENTION_TOUT
:
2254 if (tuna
->len
!= sizeof(u16
) ||
2255 tuna
->type_id
!= ETHTOOL_TUNABLE_U16
)
2265 static int ethtool_get_tunable(struct net_device
*dev
, void __user
*useraddr
)
2268 struct ethtool_tunable tuna
;
2269 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2272 if (!ops
->get_tunable
)
2274 if (copy_from_user(&tuna
, useraddr
, sizeof(tuna
)))
2276 ret
= ethtool_tunable_valid(&tuna
);
2279 data
= kmalloc(tuna
.len
, GFP_USER
);
2282 ret
= ops
->get_tunable(dev
, &tuna
, data
);
2285 useraddr
+= sizeof(tuna
);
2287 if (copy_to_user(useraddr
, data
, tuna
.len
))
2296 static int ethtool_set_tunable(struct net_device
*dev
, void __user
*useraddr
)
2299 struct ethtool_tunable tuna
;
2300 const struct ethtool_ops
*ops
= dev
->ethtool_ops
;
2303 if (!ops
->set_tunable
)
2305 if (copy_from_user(&tuna
, useraddr
, sizeof(tuna
)))
2307 ret
= ethtool_tunable_valid(&tuna
);
2310 useraddr
+= sizeof(tuna
);
2311 data
= memdup_user(useraddr
, tuna
.len
);
2313 return PTR_ERR(data
);
2314 ret
= ops
->set_tunable(dev
, &tuna
, data
);
2320 static int ethtool_get_per_queue_coalesce(struct net_device
*dev
,
2321 void __user
*useraddr
,
2322 struct ethtool_per_queue_op
*per_queue_opt
)
2326 DECLARE_BITMAP(queue_mask
, MAX_NUM_QUEUE
);
2328 if (!dev
->ethtool_ops
->get_per_queue_coalesce
)
2331 useraddr
+= sizeof(*per_queue_opt
);
2333 bitmap_from_arr32(queue_mask
, per_queue_opt
->queue_mask
,
2336 for_each_set_bit(bit
, queue_mask
, MAX_NUM_QUEUE
) {
2337 struct ethtool_coalesce coalesce
= { .cmd
= ETHTOOL_GCOALESCE
};
2339 ret
= dev
->ethtool_ops
->get_per_queue_coalesce(dev
, bit
, &coalesce
);
2342 if (copy_to_user(useraddr
, &coalesce
, sizeof(coalesce
)))
2344 useraddr
+= sizeof(coalesce
);
2350 static int ethtool_set_per_queue_coalesce(struct net_device
*dev
,
2351 void __user
*useraddr
,
2352 struct ethtool_per_queue_op
*per_queue_opt
)
2357 struct ethtool_coalesce
*backup
= NULL
, *tmp
= NULL
;
2358 DECLARE_BITMAP(queue_mask
, MAX_NUM_QUEUE
);
2360 if ((!dev
->ethtool_ops
->set_per_queue_coalesce
) ||
2361 (!dev
->ethtool_ops
->get_per_queue_coalesce
))
2364 useraddr
+= sizeof(*per_queue_opt
);
2366 bitmap_from_arr32(queue_mask
, per_queue_opt
->queue_mask
, MAX_NUM_QUEUE
);
2367 n_queue
= bitmap_weight(queue_mask
, MAX_NUM_QUEUE
);
2368 tmp
= backup
= kmalloc_array(n_queue
, sizeof(*backup
), GFP_KERNEL
);
2372 for_each_set_bit(bit
, queue_mask
, MAX_NUM_QUEUE
) {
2373 struct ethtool_coalesce coalesce
;
2375 ret
= dev
->ethtool_ops
->get_per_queue_coalesce(dev
, bit
, tmp
);
2381 if (copy_from_user(&coalesce
, useraddr
, sizeof(coalesce
))) {
2386 ret
= dev
->ethtool_ops
->set_per_queue_coalesce(dev
, bit
, &coalesce
);
2390 useraddr
+= sizeof(coalesce
);
2396 for_each_set_bit(i
, queue_mask
, bit
) {
2397 dev
->ethtool_ops
->set_per_queue_coalesce(dev
, i
, tmp
);
2406 static int ethtool_set_per_queue(struct net_device
*dev
,
2407 void __user
*useraddr
, u32 sub_cmd
)
2409 struct ethtool_per_queue_op per_queue_opt
;
2411 if (copy_from_user(&per_queue_opt
, useraddr
, sizeof(per_queue_opt
)))
2414 if (per_queue_opt
.sub_command
!= sub_cmd
)
2417 switch (per_queue_opt
.sub_command
) {
2418 case ETHTOOL_GCOALESCE
:
2419 return ethtool_get_per_queue_coalesce(dev
, useraddr
, &per_queue_opt
);
2420 case ETHTOOL_SCOALESCE
:
2421 return ethtool_set_per_queue_coalesce(dev
, useraddr
, &per_queue_opt
);
2427 static int ethtool_phy_tunable_valid(const struct ethtool_tunable
*tuna
)
2430 case ETHTOOL_PHY_DOWNSHIFT
:
2431 if (tuna
->len
!= sizeof(u8
) ||
2432 tuna
->type_id
!= ETHTOOL_TUNABLE_U8
)
2442 static int get_phy_tunable(struct net_device
*dev
, void __user
*useraddr
)
2445 struct ethtool_tunable tuna
;
2446 struct phy_device
*phydev
= dev
->phydev
;
2449 if (!(phydev
&& phydev
->drv
&& phydev
->drv
->get_tunable
))
2452 if (copy_from_user(&tuna
, useraddr
, sizeof(tuna
)))
2454 ret
= ethtool_phy_tunable_valid(&tuna
);
2457 data
= kmalloc(tuna
.len
, GFP_USER
);
2460 mutex_lock(&phydev
->lock
);
2461 ret
= phydev
->drv
->get_tunable(phydev
, &tuna
, data
);
2462 mutex_unlock(&phydev
->lock
);
2465 useraddr
+= sizeof(tuna
);
2467 if (copy_to_user(useraddr
, data
, tuna
.len
))
2476 static int set_phy_tunable(struct net_device
*dev
, void __user
*useraddr
)
2479 struct ethtool_tunable tuna
;
2480 struct phy_device
*phydev
= dev
->phydev
;
2483 if (!(phydev
&& phydev
->drv
&& phydev
->drv
->set_tunable
))
2485 if (copy_from_user(&tuna
, useraddr
, sizeof(tuna
)))
2487 ret
= ethtool_phy_tunable_valid(&tuna
);
2490 useraddr
+= sizeof(tuna
);
2491 data
= memdup_user(useraddr
, tuna
.len
);
2493 return PTR_ERR(data
);
2494 mutex_lock(&phydev
->lock
);
2495 ret
= phydev
->drv
->set_tunable(phydev
, &tuna
, data
);
2496 mutex_unlock(&phydev
->lock
);
2502 static int ethtool_get_fecparam(struct net_device
*dev
, void __user
*useraddr
)
2504 struct ethtool_fecparam fecparam
= { ETHTOOL_GFECPARAM
};
2507 if (!dev
->ethtool_ops
->get_fecparam
)
2510 rc
= dev
->ethtool_ops
->get_fecparam(dev
, &fecparam
);
2514 if (copy_to_user(useraddr
, &fecparam
, sizeof(fecparam
)))
2519 static int ethtool_set_fecparam(struct net_device
*dev
, void __user
*useraddr
)
2521 struct ethtool_fecparam fecparam
;
2523 if (!dev
->ethtool_ops
->set_fecparam
)
2526 if (copy_from_user(&fecparam
, useraddr
, sizeof(fecparam
)))
2529 return dev
->ethtool_ops
->set_fecparam(dev
, &fecparam
);
2532 /* The main entry point in this file. Called from net/core/dev_ioctl.c */
2534 int dev_ethtool(struct net
*net
, struct ifreq
*ifr
)
2536 struct net_device
*dev
= __dev_get_by_name(net
, ifr
->ifr_name
);
2537 void __user
*useraddr
= ifr
->ifr_data
;
2538 u32 ethcmd
, sub_cmd
;
2540 netdev_features_t old_features
;
2542 if (!dev
|| !netif_device_present(dev
))
2545 if (copy_from_user(ðcmd
, useraddr
, sizeof(ethcmd
)))
2548 if (ethcmd
== ETHTOOL_PERQUEUE
) {
2549 if (copy_from_user(&sub_cmd
, useraddr
+ sizeof(ethcmd
), sizeof(sub_cmd
)))
2554 /* Allow some commands to be done by anyone */
2557 case ETHTOOL_GDRVINFO
:
2558 case ETHTOOL_GMSGLVL
:
2560 case ETHTOOL_GCOALESCE
:
2561 case ETHTOOL_GRINGPARAM
:
2562 case ETHTOOL_GPAUSEPARAM
:
2563 case ETHTOOL_GRXCSUM
:
2564 case ETHTOOL_GTXCSUM
:
2566 case ETHTOOL_GSSET_INFO
:
2567 case ETHTOOL_GSTRINGS
:
2568 case ETHTOOL_GSTATS
:
2569 case ETHTOOL_GPHYSTATS
:
2571 case ETHTOOL_GPERMADDR
:
2575 case ETHTOOL_GFLAGS
:
2576 case ETHTOOL_GPFLAGS
:
2578 case ETHTOOL_GRXRINGS
:
2579 case ETHTOOL_GRXCLSRLCNT
:
2580 case ETHTOOL_GRXCLSRULE
:
2581 case ETHTOOL_GRXCLSRLALL
:
2582 case ETHTOOL_GRXFHINDIR
:
2584 case ETHTOOL_GFEATURES
:
2585 case ETHTOOL_GCHANNELS
:
2586 case ETHTOOL_GET_TS_INFO
:
2588 case ETHTOOL_GTUNABLE
:
2589 case ETHTOOL_PHY_GTUNABLE
:
2590 case ETHTOOL_GLINKSETTINGS
:
2591 case ETHTOOL_GFECPARAM
:
2594 if (!ns_capable(net
->user_ns
, CAP_NET_ADMIN
))
2598 if (dev
->ethtool_ops
->begin
) {
2599 rc
= dev
->ethtool_ops
->begin(dev
);
2603 old_features
= dev
->features
;
2607 rc
= ethtool_get_settings(dev
, useraddr
);
2610 rc
= ethtool_set_settings(dev
, useraddr
);
2612 case ETHTOOL_GDRVINFO
:
2613 rc
= ethtool_get_drvinfo(dev
, useraddr
);
2616 rc
= ethtool_get_regs(dev
, useraddr
);
2619 rc
= ethtool_get_wol(dev
, useraddr
);
2622 rc
= ethtool_set_wol(dev
, useraddr
);
2624 case ETHTOOL_GMSGLVL
:
2625 rc
= ethtool_get_value(dev
, useraddr
, ethcmd
,
2626 dev
->ethtool_ops
->get_msglevel
);
2628 case ETHTOOL_SMSGLVL
:
2629 rc
= ethtool_set_value_void(dev
, useraddr
,
2630 dev
->ethtool_ops
->set_msglevel
);
2633 rc
= ethtool_get_eee(dev
, useraddr
);
2636 rc
= ethtool_set_eee(dev
, useraddr
);
2638 case ETHTOOL_NWAY_RST
:
2639 rc
= ethtool_nway_reset(dev
);
2642 rc
= ethtool_get_link(dev
, useraddr
);
2644 case ETHTOOL_GEEPROM
:
2645 rc
= ethtool_get_eeprom(dev
, useraddr
);
2647 case ETHTOOL_SEEPROM
:
2648 rc
= ethtool_set_eeprom(dev
, useraddr
);
2650 case ETHTOOL_GCOALESCE
:
2651 rc
= ethtool_get_coalesce(dev
, useraddr
);
2653 case ETHTOOL_SCOALESCE
:
2654 rc
= ethtool_set_coalesce(dev
, useraddr
);
2656 case ETHTOOL_GRINGPARAM
:
2657 rc
= ethtool_get_ringparam(dev
, useraddr
);
2659 case ETHTOOL_SRINGPARAM
:
2660 rc
= ethtool_set_ringparam(dev
, useraddr
);
2662 case ETHTOOL_GPAUSEPARAM
:
2663 rc
= ethtool_get_pauseparam(dev
, useraddr
);
2665 case ETHTOOL_SPAUSEPARAM
:
2666 rc
= ethtool_set_pauseparam(dev
, useraddr
);
2669 rc
= ethtool_self_test(dev
, useraddr
);
2671 case ETHTOOL_GSTRINGS
:
2672 rc
= ethtool_get_strings(dev
, useraddr
);
2674 case ETHTOOL_PHYS_ID
:
2675 rc
= ethtool_phys_id(dev
, useraddr
);
2677 case ETHTOOL_GSTATS
:
2678 rc
= ethtool_get_stats(dev
, useraddr
);
2680 case ETHTOOL_GPERMADDR
:
2681 rc
= ethtool_get_perm_addr(dev
, useraddr
);
2683 case ETHTOOL_GFLAGS
:
2684 rc
= ethtool_get_value(dev
, useraddr
, ethcmd
,
2685 __ethtool_get_flags
);
2687 case ETHTOOL_SFLAGS
:
2688 rc
= ethtool_set_value(dev
, useraddr
, __ethtool_set_flags
);
2690 case ETHTOOL_GPFLAGS
:
2691 rc
= ethtool_get_value(dev
, useraddr
, ethcmd
,
2692 dev
->ethtool_ops
->get_priv_flags
);
2694 case ETHTOOL_SPFLAGS
:
2695 rc
= ethtool_set_value(dev
, useraddr
,
2696 dev
->ethtool_ops
->set_priv_flags
);
2699 case ETHTOOL_GRXRINGS
:
2700 case ETHTOOL_GRXCLSRLCNT
:
2701 case ETHTOOL_GRXCLSRULE
:
2702 case ETHTOOL_GRXCLSRLALL
:
2703 rc
= ethtool_get_rxnfc(dev
, ethcmd
, useraddr
);
2706 case ETHTOOL_SRXCLSRLDEL
:
2707 case ETHTOOL_SRXCLSRLINS
:
2708 rc
= ethtool_set_rxnfc(dev
, ethcmd
, useraddr
);
2710 case ETHTOOL_FLASHDEV
:
2711 rc
= ethtool_flash_device(dev
, useraddr
);
2714 rc
= ethtool_reset(dev
, useraddr
);
2716 case ETHTOOL_GSSET_INFO
:
2717 rc
= ethtool_get_sset_info(dev
, useraddr
);
2719 case ETHTOOL_GRXFHINDIR
:
2720 rc
= ethtool_get_rxfh_indir(dev
, useraddr
);
2722 case ETHTOOL_SRXFHINDIR
:
2723 rc
= ethtool_set_rxfh_indir(dev
, useraddr
);
2726 rc
= ethtool_get_rxfh(dev
, useraddr
);
2729 rc
= ethtool_set_rxfh(dev
, useraddr
);
2731 case ETHTOOL_GFEATURES
:
2732 rc
= ethtool_get_features(dev
, useraddr
);
2734 case ETHTOOL_SFEATURES
:
2735 rc
= ethtool_set_features(dev
, useraddr
);
2737 case ETHTOOL_GTXCSUM
:
2738 case ETHTOOL_GRXCSUM
:
2743 rc
= ethtool_get_one_feature(dev
, useraddr
, ethcmd
);
2745 case ETHTOOL_STXCSUM
:
2746 case ETHTOOL_SRXCSUM
:
2751 rc
= ethtool_set_one_feature(dev
, useraddr
, ethcmd
);
2753 case ETHTOOL_GCHANNELS
:
2754 rc
= ethtool_get_channels(dev
, useraddr
);
2756 case ETHTOOL_SCHANNELS
:
2757 rc
= ethtool_set_channels(dev
, useraddr
);
2759 case ETHTOOL_SET_DUMP
:
2760 rc
= ethtool_set_dump(dev
, useraddr
);
2762 case ETHTOOL_GET_DUMP_FLAG
:
2763 rc
= ethtool_get_dump_flag(dev
, useraddr
);
2765 case ETHTOOL_GET_DUMP_DATA
:
2766 rc
= ethtool_get_dump_data(dev
, useraddr
);
2768 case ETHTOOL_GET_TS_INFO
:
2769 rc
= ethtool_get_ts_info(dev
, useraddr
);
2771 case ETHTOOL_GMODULEINFO
:
2772 rc
= ethtool_get_module_info(dev
, useraddr
);
2774 case ETHTOOL_GMODULEEEPROM
:
2775 rc
= ethtool_get_module_eeprom(dev
, useraddr
);
2777 case ETHTOOL_GTUNABLE
:
2778 rc
= ethtool_get_tunable(dev
, useraddr
);
2780 case ETHTOOL_STUNABLE
:
2781 rc
= ethtool_set_tunable(dev
, useraddr
);
2783 case ETHTOOL_GPHYSTATS
:
2784 rc
= ethtool_get_phy_stats(dev
, useraddr
);
2786 case ETHTOOL_PERQUEUE
:
2787 rc
= ethtool_set_per_queue(dev
, useraddr
, sub_cmd
);
2789 case ETHTOOL_GLINKSETTINGS
:
2790 rc
= ethtool_get_link_ksettings(dev
, useraddr
);
2792 case ETHTOOL_SLINKSETTINGS
:
2793 rc
= ethtool_set_link_ksettings(dev
, useraddr
);
2795 case ETHTOOL_PHY_GTUNABLE
:
2796 rc
= get_phy_tunable(dev
, useraddr
);
2798 case ETHTOOL_PHY_STUNABLE
:
2799 rc
= set_phy_tunable(dev
, useraddr
);
2801 case ETHTOOL_GFECPARAM
:
2802 rc
= ethtool_get_fecparam(dev
, useraddr
);
2804 case ETHTOOL_SFECPARAM
:
2805 rc
= ethtool_set_fecparam(dev
, useraddr
);
2811 if (dev
->ethtool_ops
->complete
)
2812 dev
->ethtool_ops
->complete(dev
);
2814 if (old_features
!= dev
->features
)
2815 netdev_features_change(dev
);