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Merge branch 'vmwgfx-fixes-5.3' of git://people.freedesktop.org/~thomash/linux into...
[mirror_ubuntu-eoan-kernel.git] / net / core / ethtool.c
CommitLineData
2874c5fd 1// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4
LT		 2/*
3 * net/core/ethtool.c - Ethtool ioctl handler
4 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx>
5 *
6 * This file is where we call all the ethtool_ops commands to get
61a44b9c 7 * the information ethtool needs.
1da177e4
LT		 8 */
9
10#include <linux/module.h>
11#include <linux/types.h>
4fc268d2 12#include <linux/capability.h>
1da177e4
LT		 13#include <linux/errno.h>
14#include <linux/ethtool.h>
15#include <linux/netdevice.h>
c8f3a8c3
RC		 16#include <linux/net_tstamp.h>
17#include <linux/phy.h>
d17792eb 18#include <linux/bitops.h>
97f8aefb 19#include <linux/uaccess.h>
73da16c2 20#include <linux/vmalloc.h>
e679c9c1 21#include <linux/sfp.h>
5a0e3ad6 22#include <linux/slab.h>
68f512f2 23#include <linux/rtnetlink.h>
174cd4b1 24#include <linux/sched/signal.h>
960fb622 25#include <linux/net.h>
ddb6e99e 26#include <net/devlink.h>
1661d346 27#include <net/xdp_sock.h>
eca4205f 28#include <net/flow_offload.h>
1da177e4 29
4ec93edb 30/*
1da177e4
LT		 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.
34 */
35
36u32 ethtool_op_get_link(struct net_device *dev)
37{
38 return netif_carrier_ok(dev) ? 1 : 0;
39}
97f8aefb 40EXPORT_SYMBOL(ethtool_op_get_link);
1da177e4 41
02eacbd0
RC		 42int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info)
43{
44 info->so_timestamping =
45 SOF_TIMESTAMPING_TX_SOFTWARE |
46 SOF_TIMESTAMPING_RX_SOFTWARE |
47 SOF_TIMESTAMPING_SOFTWARE;
48 info->phc_index = -1;
49 return 0;
50}
51EXPORT_SYMBOL(ethtool_op_get_ts_info);
52
1da177e4
LT		 53/* Handlers for each ethtool command */
54
475414f6 55#define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32)
5455c699 56
9d921549
MM		 57static 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",
9d921549
MM		 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",
788dfcac 64 [NETIF_F_HW_VLAN_CTAG_TX_BIT] = "tx-vlan-hw-insert",
9d921549 65
788dfcac
FLVC		 66 [NETIF_F_HW_VLAN_CTAG_RX_BIT] = "rx-vlan-hw-parse",
67 [NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-filter",
2d6577f1
DM		 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",
9d921549
MM		 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",
fb1f5f79 76 [NETIF_F_GRO_HW_BIT] = "rx-gro-hw",
9d921549
MM		 77 [NETIF_F_LRO_BIT] = "rx-lro",
78
79 [NETIF_F_TSO_BIT] = "tx-tcp-segmentation",
9d921549
MM		 80 [NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust",
81 [NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation",
cbc53e08 82 [NETIF_F_TSO_MANGLEID_BIT] = "tx-tcp-mangleid-segmentation",
9d921549
MM		 83 [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation",
84 [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation",
68c33163 85 [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation",
518f213d 86 [NETIF_F_GSO_GRE_CSUM_BIT] = "tx-gre-csum-segmentation",
7e13318d
TH		 87 [NETIF_F_GSO_IPXIP4_BIT] = "tx-ipxip4-segmentation",
88 [NETIF_F_GSO_IPXIP6_BIT] = "tx-ipxip6-segmentation",
73136267 89 [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation",
518f213d 90 [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation",
802ab55a 91 [NETIF_F_GSO_PARTIAL_BIT] = "tx-gso-partial",
90017acc 92 [NETIF_F_GSO_SCTP_BIT] = "tx-sctp-segmentation",
c7ef8f0c 93 [NETIF_F_GSO_ESP_BIT] = "tx-esp-segmentation",
83aa025f 94 [NETIF_F_GSO_UDP_L4_BIT] = "tx-udp-segmentation",
9d921549
MM		 95
96 [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc",
53692b1d 97 [NETIF_F_SCTP_CRC_BIT] = "tx-checksum-sctp",
9d921549
MM		 98 [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu",
99 [NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter",
100 [NETIF_F_RXHASH_BIT] = "rx-hashing",
101 [NETIF_F_RXCSUM_BIT] = "rx-checksum",
102 [NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy",
103 [NETIF_F_LOOPBACK_BIT] = "loopback",
36eabda3 104 [NETIF_F_RXFCS_BIT] = "rx-fcs",
5e0c03c8 105 [NETIF_F_RXALL_BIT] = "rx-all",
a6cc0cfa 106 [NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload",
1c78c64e 107 [NETIF_F_HW_TC_BIT] = "hw-tc-offload",
c7ef8f0c
SK		 108 [NETIF_F_HW_ESP_BIT] = "esp-hw-offload",
109 [NETIF_F_HW_ESP_TX_CSUM_BIT] = "esp-tx-csum-hw-offload",
d764a122 110 [NETIF_F_RX_UDP_TUNNEL_PORT_BIT] = "rx-udp_tunnel-port-offload",
e0be6bea 111 [NETIF_F_HW_TLS_RECORD_BIT] = "tls-hw-record",
2342a851 112 [NETIF_F_HW_TLS_TX_BIT] = "tls-hw-tx-offload",
14136564 113 [NETIF_F_HW_TLS_RX_BIT] = "tls-hw-rx-offload",
9d921549
MM		 114};
115
892311f6
EP		 116static const char
117rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = {
118 [ETH_RSS_HASH_TOP_BIT] = "toeplitz",
119 [ETH_RSS_HASH_XOR_BIT] = "xor",
abb521e3 120 [ETH_RSS_HASH_CRC32_BIT] = "crc32",
892311f6
EP		 121};
122
a4244b0c
HHZ		 123static const char
124tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
125 [ETHTOOL_ID_UNSPEC] = "Unspec",
126 [ETHTOOL_RX_COPYBREAK] = "rx-copybreak",
127 [ETHTOOL_TX_COPYBREAK] = "tx-copybreak",
e1577c1c 128 [ETHTOOL_PFC_PREVENTION_TOUT] = "pfc-prevention-tout",
a4244b0c
HHZ		 129};
130
968ad9da
RL		 131static const char
132phy_tunable_strings[__ETHTOOL_PHY_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
133 [ETHTOOL_ID_UNSPEC] = "Unspec",
65feddd5 134 [ETHTOOL_PHY_DOWNSHIFT] = "phy-downshift",
3aeb0803 135 [ETHTOOL_PHY_FAST_LINK_DOWN] = "phy-fast-link-down",
968ad9da
RL		 136};
137
5455c699
MM		 138static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
139{
140 struct ethtool_gfeatures cmd = {
141 .cmd = ETHTOOL_GFEATURES,
142 .size = ETHTOOL_DEV_FEATURE_WORDS,
143 };
475414f6 144 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
5455c699
MM		 145 u32 __user *sizeaddr;
146 u32 copy_size;
475414f6
MM		 147 int i;
148
149 /* in case feature bits run out again */
09da71b1 150 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t));
475414f6
MM		 151
152 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
09da71b1
MM		 153 features[i].available = (u32)(dev->hw_features >> (32 * i));
154 features[i].requested = (u32)(dev->wanted_features >> (32 * i));
155 features[i].active = (u32)(dev->features >> (32 * i));
156 features[i].never_changed =
157 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i));
475414f6 158 }
5455c699
MM		 159
160 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
161 if (get_user(copy_size, sizeaddr))
162 return -EFAULT;
163
164 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
165 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
166
167 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
168 return -EFAULT;
169 useraddr += sizeof(cmd);
170 if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
171 return -EFAULT;
172
173 return 0;
174}
175
176static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
177{
178 struct ethtool_sfeatures cmd;
179 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
475414f6
MM		 180 netdev_features_t wanted = 0, valid = 0;
181 int i, ret = 0;
5455c699
MM		 182
183 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
184 return -EFAULT;
185 useraddr += sizeof(cmd);
186
187 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
188 return -EINVAL;
189
190 if (copy_from_user(features, useraddr, sizeof(features)))
191 return -EFAULT;
192
475414f6 193 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
09da71b1
MM		 194 valid |= (netdev_features_t)features[i].valid << (32 * i);
195 wanted |= (netdev_features_t)features[i].requested << (32 * i);
475414f6
MM		 196 }
197
198 if (valid & ~NETIF_F_ETHTOOL_BITS)
5455c699
MM		 199 return -EINVAL;
200
475414f6
MM		 201 if (valid & ~dev->hw_features) {
202 valid &= dev->hw_features;
5455c699
MM		 203 ret |= ETHTOOL_F_UNSUPPORTED;
204 }
205
475414f6
MM		 206 dev->wanted_features &= ~valid;
207 dev->wanted_features |= wanted & valid;
6cb6a27c 208 __netdev_update_features(dev);
5455c699 209
475414f6 210 if ((dev->wanted_features ^ dev->features) & valid)
5455c699
MM		 211 ret |= ETHTOOL_F_WISH;
212
213 return ret;
214}
215
340ae165
MM		 216static int __ethtool_get_sset_count(struct net_device *dev, int sset)
217{
218 const struct ethtool_ops *ops = dev->ethtool_ops;
219
5455c699
MM		 220 if (sset == ETH_SS_FEATURES)
221 return ARRAY_SIZE(netdev_features_strings);
222
892311f6
EP		 223 if (sset == ETH_SS_RSS_HASH_FUNCS)
224 return ARRAY_SIZE(rss_hash_func_strings);
225
a4244b0c
HHZ		 226 if (sset == ETH_SS_TUNABLES)
227 return ARRAY_SIZE(tunable_strings);
228
968ad9da
RL		 229 if (sset == ETH_SS_PHY_TUNABLES)
230 return ARRAY_SIZE(phy_tunable_strings);
231
99943382
FF		 232 if (sset == ETH_SS_PHY_STATS && dev->phydev &&
233 !ops->get_ethtool_phy_stats)
234 return phy_ethtool_get_sset_count(dev->phydev);
f3a40945 235
c03a14e8 236 if (ops->get_sset_count && ops->get_strings)
340ae165
MM		 237 return ops->get_sset_count(dev, sset);
238 else
239 return -EOPNOTSUPP;
240}
241
242static void __ethtool_get_strings(struct net_device *dev,
243 u32 stringset, u8 *data)
244{
245 const struct ethtool_ops *ops = dev->ethtool_ops;
246
5455c699
MM		 247 if (stringset == ETH_SS_FEATURES)
248 memcpy(data, netdev_features_strings,
249 sizeof(netdev_features_strings));
892311f6
EP		 250 else if (stringset == ETH_SS_RSS_HASH_FUNCS)
251 memcpy(data, rss_hash_func_strings,
252 sizeof(rss_hash_func_strings));
a4244b0c
HHZ		 253 else if (stringset == ETH_SS_TUNABLES)
254 memcpy(data, tunable_strings, sizeof(tunable_strings));
968ad9da
RL		 255 else if (stringset == ETH_SS_PHY_TUNABLES)
256 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings));
99943382
FF		 257 else if (stringset == ETH_SS_PHY_STATS && dev->phydev &&
258 !ops->get_ethtool_phy_stats)
259 phy_ethtool_get_strings(dev->phydev, data);
260 else
5455c699
MM		 261 /* ops->get_strings is valid because checked earlier */
262 ops->get_strings(dev, stringset, data);
340ae165
MM		 263}
264
c8f44aff 265static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd)
0a417704
MM		 266{
267 /* feature masks of legacy discrete ethtool ops */
268
269 switch (eth_cmd) {
270 case ETHTOOL_GTXCSUM:
271 case ETHTOOL_STXCSUM:
a188222b 272 return NETIF_F_CSUM_MASK | NETIF_F_SCTP_CRC;
e83d360d
MM		 273 case ETHTOOL_GRXCSUM:
274 case ETHTOOL_SRXCSUM:
275 return NETIF_F_RXCSUM;
0a417704
MM		 276 case ETHTOOL_GSG:
277 case ETHTOOL_SSG:
278 return NETIF_F_SG;
279 case ETHTOOL_GTSO:
280 case ETHTOOL_STSO:
281 return NETIF_F_ALL_TSO;
0a417704
MM		 282 case ETHTOOL_GGSO:
283 case ETHTOOL_SGSO:
284 return NETIF_F_GSO;
285 case ETHTOOL_GGRO:
286 case ETHTOOL_SGRO:
287 return NETIF_F_GRO;
288 default:
289 BUG();
290 }
291}
292
0a417704
MM		 293static int ethtool_get_one_feature(struct net_device *dev,
294 char __user *useraddr, u32 ethcmd)
295{
c8f44aff 296 netdev_features_t mask = ethtool_get_feature_mask(ethcmd);
0a417704
MM		 297 struct ethtool_value edata = {
298 .cmd = ethcmd,
86794881 299 .data = !!(dev->features & mask),
0a417704 300 };
0a417704 301
0a417704
MM		 302 if (copy_to_user(useraddr, &edata, sizeof(edata)))
303 return -EFAULT;
304 return 0;
305}
306
0a417704
MM		 307static int ethtool_set_one_feature(struct net_device *dev,
308 void __user *useraddr, u32 ethcmd)
309{
310 struct ethtool_value edata;
c8f44aff 311 netdev_features_t mask;
0a417704
MM		 312
313 if (copy_from_user(&edata, useraddr, sizeof(edata)))
314 return -EFAULT;
315
86794881
MM		 316 mask = ethtool_get_feature_mask(ethcmd);
317 mask &= dev->hw_features;
bc5787c6
MM		 318 if (!mask)
319 return -EOPNOTSUPP;
86794881 320
bc5787c6
MM		 321 if (edata.data)
322 dev->wanted_features |= mask;
323 else
324 dev->wanted_features &= ~mask;
86794881 325
bc5787c6 326 __netdev_update_features(dev);
86794881 327
bc5787c6
MM		 328 return 0;
329}
330
02b3a552
MM		 331#define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
332 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
f646968f
PM		 333#define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
334 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
335 NETIF_F_RXHASH)
bc5787c6
MM		 336
337static u32 __ethtool_get_flags(struct net_device *dev)
338{
02b3a552
MM		 339 u32 flags = 0;
340
8a73125c
DF		 341 if (dev->features & NETIF_F_LRO)
342 flags |= ETH_FLAG_LRO;
343 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
344 flags |= ETH_FLAG_RXVLAN;
345 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX)
346 flags |= ETH_FLAG_TXVLAN;
347 if (dev->features & NETIF_F_NTUPLE)
348 flags |= ETH_FLAG_NTUPLE;
349 if (dev->features & NETIF_F_RXHASH)
350 flags |= ETH_FLAG_RXHASH;
02b3a552
MM		 351
352 return flags;
0a417704
MM		 353}
354
bc5787c6 355static int __ethtool_set_flags(struct net_device *dev, u32 data)
da8ac86c 356{
c8f44aff 357 netdev_features_t features = 0, changed;
da8ac86c 358
02b3a552 359 if (data & ~ETH_ALL_FLAGS)
da8ac86c
MM		 360 return -EINVAL;
361
8a73125c
DF		 362 if (data & ETH_FLAG_LRO)
363 features |= NETIF_F_LRO;
364 if (data & ETH_FLAG_RXVLAN)
365 features |= NETIF_F_HW_VLAN_CTAG_RX;
366 if (data & ETH_FLAG_TXVLAN)
367 features |= NETIF_F_HW_VLAN_CTAG_TX;
368 if (data & ETH_FLAG_NTUPLE)
369 features |= NETIF_F_NTUPLE;
370 if (data & ETH_FLAG_RXHASH)
371 features |= NETIF_F_RXHASH;
02b3a552 372
da8ac86c 373 /* allow changing only bits set in hw_features */
02b3a552 374 changed = (features ^ dev->features) & ETH_ALL_FEATURES;
da8ac86c
MM		 375 if (changed & ~dev->hw_features)
376 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
377
378 dev->wanted_features =
02b3a552 379 (dev->wanted_features & ~changed) | (features & changed);
da8ac86c 380
6cb6a27c 381 __netdev_update_features(dev);
da8ac86c
MM		 382
383 return 0;
384}
385
5a6cd6de
AB		 386/* Given two link masks, AND them together and save the result in dst. */
387void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst,
388 struct ethtool_link_ksettings *src)
389{
390 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS);
391 unsigned int idx = 0;
392
393 for (; idx < size; idx++) {
394 dst->link_modes.supported[idx] &=
395 src->link_modes.supported[idx];
396 dst->link_modes.advertising[idx] &=
397 src->link_modes.advertising[idx];
398 }
399}
400EXPORT_SYMBOL(ethtool_intersect_link_masks);
401
6d62b4d5
PR		 402void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
403 u32 legacy_u32)
3f1ac7a7
DD		 404{
405 bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS);
406 dst[0] = legacy_u32;
407}
6d62b4d5 408EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode);
3f1ac7a7
DD		 409
410/* return false if src had higher bits set. lower bits always updated. */
6d62b4d5
PR		 411bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
412 const unsigned long *src)
3f1ac7a7
DD		 413{
414 bool retval = true;
415
416 /* TODO: following test will soon always be true */
417 if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) {
418 __ETHTOOL_DECLARE_LINK_MODE_MASK(ext);
419
420 bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
421 bitmap_fill(ext, 32);
422 bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
423 if (bitmap_intersects(ext, src,
424 __ETHTOOL_LINK_MODE_MASK_NBITS)) {
425 /* src mask goes beyond bit 31 */
426 retval = false;
427 }
428 }
429 *legacy_u32 = src[0];
430 return retval;
431}
6d62b4d5 432EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32);
3f1ac7a7
DD		 433
434/* return false if legacy contained non-0 deprecated fields
95491e3c 435 * maxtxpkt/maxrxpkt. rest of ksettings always updated
3f1ac7a7
DD		 436 */
437static bool
438convert_legacy_settings_to_link_ksettings(
439 struct ethtool_link_ksettings *link_ksettings,
440 const struct ethtool_cmd *legacy_settings)
441{
442 bool retval = true;
443
444 memset(link_ksettings, 0, sizeof(*link_ksettings));
445
446 /* This is used to tell users that driver is still using these
447 * deprecated legacy fields, and they should not use
448 * %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS
449 */
95491e3c 450 if (legacy_settings->maxtxpkt ||
3f1ac7a7
DD		 451 legacy_settings->maxrxpkt)
452 retval = false;
453
6d62b4d5 454 ethtool_convert_legacy_u32_to_link_mode(
3f1ac7a7
DD		 455 link_ksettings->link_modes.supported,
456 legacy_settings->supported);
6d62b4d5 457 ethtool_convert_legacy_u32_to_link_mode(
3f1ac7a7
DD		 458 link_ksettings->link_modes.advertising,
459 legacy_settings->advertising);
6d62b4d5 460 ethtool_convert_legacy_u32_to_link_mode(
3f1ac7a7
DD		 461 link_ksettings->link_modes.lp_advertising,
462 legacy_settings->lp_advertising);
463 link_ksettings->base.speed
464 = ethtool_cmd_speed(legacy_settings);
465 link_ksettings->base.duplex
466 = legacy_settings->duplex;
467 link_ksettings->base.port
468 = legacy_settings->port;
469 link_ksettings->base.phy_address
470 = legacy_settings->phy_address;
471 link_ksettings->base.autoneg
472 = legacy_settings->autoneg;
473 link_ksettings->base.mdio_support
474 = legacy_settings->mdio_support;
475 link_ksettings->base.eth_tp_mdix
476 = legacy_settings->eth_tp_mdix;
477 link_ksettings->base.eth_tp_mdix_ctrl
478 = legacy_settings->eth_tp_mdix_ctrl;
479 return retval;
480}
481
482/* return false if ksettings link modes had higher bits
483 * set. legacy_settings always updated (best effort)
484 */
485static bool
486convert_link_ksettings_to_legacy_settings(
487 struct ethtool_cmd *legacy_settings,
488 const struct ethtool_link_ksettings *link_ksettings)
489{
490 bool retval = true;
491
492 memset(legacy_settings, 0, sizeof(*legacy_settings));
493 /* this also clears the deprecated fields in legacy structure:
494 * __u8 transceiver;
495 * __u32 maxtxpkt;
496 * __u32 maxrxpkt;
497 */
498
6d62b4d5 499 retval &= ethtool_convert_link_mode_to_legacy_u32(
3f1ac7a7
DD		 500 &legacy_settings->supported,
501 link_ksettings->link_modes.supported);
6d62b4d5 502 retval &= ethtool_convert_link_mode_to_legacy_u32(
3f1ac7a7
DD		 503 &legacy_settings->advertising,
504 link_ksettings->link_modes.advertising);
6d62b4d5 505 retval &= ethtool_convert_link_mode_to_legacy_u32(
3f1ac7a7
DD		 506 &legacy_settings->lp_advertising,
507 link_ksettings->link_modes.lp_advertising);
508 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed);
509 legacy_settings->duplex
510 = link_ksettings->base.duplex;
511 legacy_settings->port
512 = link_ksettings->base.port;
513 legacy_settings->phy_address
514 = link_ksettings->base.phy_address;
515 legacy_settings->autoneg
516 = link_ksettings->base.autoneg;
517 legacy_settings->mdio_support
518 = link_ksettings->base.mdio_support;
519 legacy_settings->eth_tp_mdix
520 = link_ksettings->base.eth_tp_mdix;
521 legacy_settings->eth_tp_mdix_ctrl
522 = link_ksettings->base.eth_tp_mdix_ctrl;
19cab887
FF		 523 legacy_settings->transceiver
524 = link_ksettings->base.transceiver;
3f1ac7a7
DD		 525 return retval;
526}
527
528/* number of 32-bit words to store the user's link mode bitmaps */
529#define __ETHTOOL_LINK_MODE_MASK_NU32 \
530 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
531
532/* layout of the struct passed from/to userland */
533struct ethtool_link_usettings {
534 struct ethtool_link_settings base;
535 struct {
536 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32];
537 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
538 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
539 } link_modes;
540};
541
9b300495 542/* Internal kernel helper to query a device ethtool_link_settings. */
3f1ac7a7
DD		 543int __ethtool_get_link_ksettings(struct net_device *dev,
544 struct ethtool_link_ksettings *link_ksettings)
545{
3f1ac7a7
DD		 546 ASSERT_RTNL();
547
9b300495 548 if (!dev->ethtool_ops->get_link_ksettings)
3237fc63
DD		 549 return -EOPNOTSUPP;
550
9b300495
MK		 551 memset(link_ksettings, 0, sizeof(*link_ksettings));
552 return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings);
3f1ac7a7
DD		 553}
554EXPORT_SYMBOL(__ethtool_get_link_ksettings);
555
556/* convert ethtool_link_usettings in user space to a kernel internal
557 * ethtool_link_ksettings. return 0 on success, errno on error.
558 */
559static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to,
560 const void __user *from)
561{
562 struct ethtool_link_usettings link_usettings;
563
564 if (copy_from_user(&link_usettings, from, sizeof(link_usettings)))
565 return -EFAULT;
566
567 memcpy(&to->base, &link_usettings.base, sizeof(to->base));
3aa56885
YN		 568 bitmap_from_arr32(to->link_modes.supported,
569 link_usettings.link_modes.supported,
570 __ETHTOOL_LINK_MODE_MASK_NBITS);
571 bitmap_from_arr32(to->link_modes.advertising,
572 link_usettings.link_modes.advertising,
573 __ETHTOOL_LINK_MODE_MASK_NBITS);
574 bitmap_from_arr32(to->link_modes.lp_advertising,
575 link_usettings.link_modes.lp_advertising,
576 __ETHTOOL_LINK_MODE_MASK_NBITS);
3f1ac7a7
DD		 577
578 return 0;
579}
580
581/* convert a kernel internal ethtool_link_ksettings to
582 * ethtool_link_usettings in user space. return 0 on success, errno on
583 * error.
584 */
585static int
586store_link_ksettings_for_user(void __user *to,
587 const struct ethtool_link_ksettings *from)
588{
589 struct ethtool_link_usettings link_usettings;
590
591 memcpy(&link_usettings.base, &from->base, sizeof(link_usettings));
3aa56885
YN		 592 bitmap_to_arr32(link_usettings.link_modes.supported,
593 from->link_modes.supported,
594 __ETHTOOL_LINK_MODE_MASK_NBITS);
595 bitmap_to_arr32(link_usettings.link_modes.advertising,
596 from->link_modes.advertising,
597 __ETHTOOL_LINK_MODE_MASK_NBITS);
598 bitmap_to_arr32(link_usettings.link_modes.lp_advertising,
599 from->link_modes.lp_advertising,
600 __ETHTOOL_LINK_MODE_MASK_NBITS);
3f1ac7a7
DD		 601
602 if (copy_to_user(to, &link_usettings, sizeof(link_usettings)))
603 return -EFAULT;
604
605 return 0;
606}
607
9b300495 608/* Query device for its ethtool_link_settings. */
3f1ac7a7
DD		 609static int ethtool_get_link_ksettings(struct net_device *dev,
610 void __user *useraddr)
611{
612 int err = 0;
613 struct ethtool_link_ksettings link_ksettings;
614
615 ASSERT_RTNL();
3f1ac7a7
DD		 616 if (!dev->ethtool_ops->get_link_ksettings)
617 return -EOPNOTSUPP;
618
619 /* handle bitmap nbits handshake */
620 if (copy_from_user(&link_ksettings.base, useraddr,
621 sizeof(link_ksettings.base)))
622 return -EFAULT;
623
624 if (__ETHTOOL_LINK_MODE_MASK_NU32
625 != link_ksettings.base.link_mode_masks_nwords) {
626 /* wrong link mode nbits requested */
627 memset(&link_ksettings, 0, sizeof(link_ksettings));
793cf87d 628 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
3f1ac7a7
DD		 629 /* send back number of words required as negative val */
630 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX,
631 "need too many bits for link modes!");
632 link_ksettings.base.link_mode_masks_nwords
633 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32);
634
635 /* copy the base fields back to user, not the link
636 * mode bitmaps
637 */
638 if (copy_to_user(useraddr, &link_ksettings.base,
639 sizeof(link_ksettings.base)))
640 return -EFAULT;
641
642 return 0;
643 }
644
645 /* handshake successful: user/kernel agree on
646 * link_mode_masks_nwords
647 */
648
649 memset(&link_ksettings, 0, sizeof(link_ksettings));
650 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
651 if (err < 0)
652 return err;
653
654 /* make sure we tell the right values to user */
655 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
656 link_ksettings.base.link_mode_masks_nwords
657 = __ETHTOOL_LINK_MODE_MASK_NU32;
658
659 return store_link_ksettings_for_user(useraddr, &link_ksettings);
660}
661
9b300495 662/* Update device ethtool_link_settings. */
3f1ac7a7
DD		 663static int ethtool_set_link_ksettings(struct net_device *dev,
664 void __user *useraddr)
665{
666 int err;
667 struct ethtool_link_ksettings link_ksettings;
668
669 ASSERT_RTNL();
670
671 if (!dev->ethtool_ops->set_link_ksettings)
672 return -EOPNOTSUPP;
673
674 /* make sure nbits field has expected value */
675 if (copy_from_user(&link_ksettings.base, useraddr,
676 sizeof(link_ksettings.base)))
677 return -EFAULT;
678
679 if (__ETHTOOL_LINK_MODE_MASK_NU32
680 != link_ksettings.base.link_mode_masks_nwords)
681 return -EINVAL;
682
683 /* copy the whole structure, now that we know it has expected
684 * format
685 */
686 err = load_link_ksettings_from_user(&link_ksettings, useraddr);
687 if (err)
688 return err;
689
690 /* re-check nwords field, just in case */
691 if (__ETHTOOL_LINK_MODE_MASK_NU32
692 != link_ksettings.base.link_mode_masks_nwords)
693 return -EINVAL;
694
695 return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
696}
697
3f1ac7a7
DD		 698/* Query device for its ethtool_cmd settings.
699 *
9b300495
MK		 700 * Backward compatibility note: for compatibility with legacy ethtool, this is
701 * now implemented via get_link_ksettings. When driver reports higher link mode
702 * bits, a kernel warning is logged once (with name of 1st driver/device) to
703 * recommend user to upgrade ethtool, but the command is successful (only the
704 * lower link mode bits reported back to user). Deprecated fields from
705 * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero.
3f1ac7a7 706 */
4bc71cb9
JP		 707static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
708{
9b300495 709 struct ethtool_link_ksettings link_ksettings;
4bc71cb9 710 struct ethtool_cmd cmd;
9b300495 711 int err;
4bc71cb9 712
3f1ac7a7 713 ASSERT_RTNL();
9b300495
MK		 714 if (!dev->ethtool_ops->get_link_ksettings)
715 return -EOPNOTSUPP;
3f1ac7a7 716
9b300495
MK		 717 memset(&link_ksettings, 0, sizeof(link_ksettings));
718 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
719 if (err < 0)
720 return err;
721 convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings);
3237fc63 722
9b300495
MK		 723 /* send a sensible cmd tag back to user */
724 cmd.cmd = ETHTOOL_GSET;
1da177e4
LT		 725
726 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
727 return -EFAULT;
3f1ac7a7 728
1da177e4
LT		 729 return 0;
730}
731
3f1ac7a7
DD		 732/* Update device link settings with given ethtool_cmd.
733 *
9b300495
MK		 734 * Backward compatibility note: for compatibility with legacy ethtool, this is
735 * now always implemented via set_link_settings. When user's request updates
736 * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
737 * warning is logged once (with name of 1st driver/device) to recommend user to
738 * upgrade ethtool, and the request is rejected.
3f1ac7a7 739 */
1da177e4
LT		 740static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
741{
9b300495 742 struct ethtool_link_ksettings link_ksettings;
1da177e4
LT		 743 struct ethtool_cmd cmd;
744
3f1ac7a7 745 ASSERT_RTNL();
1da177e4
LT		 746
747 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
748 return -EFAULT;
9b300495 749 if (!dev->ethtool_ops->set_link_ksettings)
3f1ac7a7
DD		 750 return -EOPNOTSUPP;
751
9b300495
MK		 752 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd))
753 return -EINVAL;
754 link_ksettings.base.link_mode_masks_nwords =
755 __ETHTOOL_LINK_MODE_MASK_NU32;
756 return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
1da177e4
LT		 757}
758
97f8aefb 759static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
760 void __user *useraddr)
1da177e4
LT		 761{
762 struct ethtool_drvinfo info;
76fd8593 763 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 764
1da177e4
LT		 765 memset(&info, 0, sizeof(info));
766 info.cmd = ETHTOOL_GDRVINFO;
c03a14e8 767 if (ops->get_drvinfo) {
01414802
BH		 768 ops->get_drvinfo(dev, &info);
769 } else if (dev->dev.parent && dev->dev.parent->driver) {
770 strlcpy(info.bus_info, dev_name(dev->dev.parent),
771 sizeof(info.bus_info));
772 strlcpy(info.driver, dev->dev.parent->driver->name,
773 sizeof(info.driver));
774 } else {
775 return -EOPNOTSUPP;
776 }
1da177e4 777
723b2f57
JG		 778 /*
779 * this method of obtaining string set info is deprecated;
d17792eb 780 * Use ETHTOOL_GSSET_INFO instead.
723b2f57 781 */
c03a14e8 782 if (ops->get_sset_count) {
ff03d49f
JG		 783 int rc;
784
785 rc = ops->get_sset_count(dev, ETH_SS_TEST);
786 if (rc >= 0)
787 info.testinfo_len = rc;
788 rc = ops->get_sset_count(dev, ETH_SS_STATS);
789 if (rc >= 0)
790 info.n_stats = rc;
339bf024
JG		 791 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
792 if (rc >= 0)
793 info.n_priv_flags = rc;
ff03d49f 794 }
f9fc54d3
YL		 795 if (ops->get_regs_len) {
796 int ret = ops->get_regs_len(dev);
797
798 if (ret > 0)
799 info.regdump_len = ret;
800 }
801
c03a14e8 802 if (ops->get_eeprom_len)
1da177e4
LT		 803 info.eedump_len = ops->get_eeprom_len(dev);
804
ddb6e99e
JK		 805 if (!info.fw_version[0])
806 devlink_compat_running_version(dev, info.fw_version,
807 sizeof(info.fw_version));
ddb6e99e 808
1da177e4
LT		 809 if (copy_to_user(useraddr, &info, sizeof(info)))
810 return -EFAULT;
811 return 0;
812}
813
f5c445ed 814static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
97f8aefb 815 void __user *useraddr)
723b2f57
JG		 816{
817 struct ethtool_sset_info info;
723b2f57
JG		 818 u64 sset_mask;
819 int i, idx = 0, n_bits = 0, ret, rc;
820 u32 *info_buf = NULL;
821
723b2f57
JG		 822 if (copy_from_user(&info, useraddr, sizeof(info)))
823 return -EFAULT;
824
825 /* store copy of mask, because we zero struct later on */
826 sset_mask = info.sset_mask;
827 if (!sset_mask)
828 return 0;
829
830 /* calculate size of return buffer */
d17792eb 831 n_bits = hweight64(sset_mask);
723b2f57
JG		 832
833 memset(&info, 0, sizeof(info));
834 info.cmd = ETHTOOL_GSSET_INFO;
835
6396bb22 836 info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER);
723b2f57
JG		 837 if (!info_buf)
838 return -ENOMEM;
839
840 /*
841 * fill return buffer based on input bitmask and successful
842 * get_sset_count return
843 */
844 for (i = 0; i < 64; i++) {
845 if (!(sset_mask & (1ULL << i)))
846 continue;
847
340ae165 848 rc = __ethtool_get_sset_count(dev, i);
723b2f57
JG		 849 if (rc >= 0) {
850 info.sset_mask |= (1ULL << i);
851 info_buf[idx++] = rc;
852 }
853 }
854
855 ret = -EFAULT;
856 if (copy_to_user(useraddr, &info, sizeof(info)))
857 goto out;
858
859 useraddr += offsetof(struct ethtool_sset_info, data);
860 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
861 goto out;
862
863 ret = 0;
864
865out:
866 kfree(info_buf);
867 return ret;
868}
869
97f8aefb 870static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
bf988435 871 u32 cmd, void __user *useraddr)
0853ad66 872{
bf988435
BH		 873 struct ethtool_rxnfc info;
874 size_t info_size = sizeof(info);
55664f32 875 int rc;
0853ad66 876
59089d8d 877 if (!dev->ethtool_ops->set_rxnfc)
0853ad66
SB		 878 return -EOPNOTSUPP;
879
bf988435
BH		 880 /* struct ethtool_rxnfc was originally defined for
881 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
882 * members. User-space might still be using that
883 * definition. */
884 if (cmd == ETHTOOL_SRXFH)
885 info_size = (offsetof(struct ethtool_rxnfc, data) +
886 sizeof(info.data));
887
888 if (copy_from_user(&info, useraddr, info_size))
0853ad66
SB		 889 return -EFAULT;
890
55664f32
BH		 891 rc = dev->ethtool_ops->set_rxnfc(dev, &info);
892 if (rc)
893 return rc;
894
895 if (cmd == ETHTOOL_SRXCLSRLINS &&
896 copy_to_user(useraddr, &info, info_size))
897 return -EFAULT;
898
899 return 0;
0853ad66
SB		 900}
901
97f8aefb 902static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
bf988435 903 u32 cmd, void __user *useraddr)
0853ad66
SB		 904{
905 struct ethtool_rxnfc info;
bf988435 906 size_t info_size = sizeof(info);
59089d8d
SB		 907 const struct ethtool_ops *ops = dev->ethtool_ops;
908 int ret;
909 void *rule_buf = NULL;
0853ad66 910
59089d8d 911 if (!ops->get_rxnfc)
0853ad66
SB		 912 return -EOPNOTSUPP;
913
bf988435
BH		 914 /* struct ethtool_rxnfc was originally defined for
915 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
916 * members. User-space might still be using that
917 * definition. */
918 if (cmd == ETHTOOL_GRXFH)
919 info_size = (offsetof(struct ethtool_rxnfc, data) +
920 sizeof(info.data));
921
922 if (copy_from_user(&info, useraddr, info_size))
0853ad66
SB		 923 return -EFAULT;
924
84a1d9c4
EC		 925 /* If FLOW_RSS was requested then user-space must be using the
926 * new definition, as FLOW_RSS is newer.
927 */
928 if (cmd == ETHTOOL_GRXFH && info.flow_type & FLOW_RSS) {
929 info_size = sizeof(info);
930 if (copy_from_user(&info, useraddr, info_size))
931 return -EFAULT;
d656fe49
WW		 932 /* Since malicious users may modify the original data,
933 * we need to check whether FLOW_RSS is still requested.
934 */
935 if (!(info.flow_type & FLOW_RSS))
936 return -EINVAL;
84a1d9c4
EC		 937 }
938
2bb3207d
WW		 939 if (info.cmd != cmd)
940 return -EINVAL;
941
59089d8d
SB		 942 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
943 if (info.rule_cnt > 0) {
db048b69 944 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
6396bb22 945 rule_buf = kcalloc(info.rule_cnt, sizeof(u32),
db048b69 946 GFP_USER);
59089d8d
SB		 947 if (!rule_buf)
948 return -ENOMEM;
949 }
950 }
0853ad66 951
59089d8d
SB		 952 ret = ops->get_rxnfc(dev, &info, rule_buf);
953 if (ret < 0)
954 goto err_out;
955
956 ret = -EFAULT;
bf988435 957 if (copy_to_user(useraddr, &info, info_size))
59089d8d
SB		 958 goto err_out;
959
960 if (rule_buf) {
961 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
962 if (copy_to_user(useraddr, rule_buf,
963 info.rule_cnt * sizeof(u32)))
964 goto err_out;
965 }
966 ret = 0;
967
968err_out:
c9caceca 969 kfree(rule_buf);
59089d8d
SB		 970
971 return ret;
0853ad66
SB		 972}
973
3de0b592
VD		 974static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr,
975 struct ethtool_rxnfc *rx_rings,
976 u32 size)
977{
fb95cd8d 978 int i;
3de0b592
VD		 979
980 if (copy_from_user(indir, useraddr, size * sizeof(indir[0])))
fb95cd8d 981 return -EFAULT;
3de0b592
VD		 982
983 /* Validate ring indices */
fb95cd8d
BH		 984 for (i = 0; i < size; i++)
985 if (indir[i] >= rx_rings->data)
986 return -EINVAL;
987
988 return 0;
3de0b592
VD		 989}
990
ba905f5e 991u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly;
960fb622
ED		 992
993void netdev_rss_key_fill(void *buffer, size_t len)
994{
995 BUG_ON(len > sizeof(netdev_rss_key));
996 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key));
997 memcpy(buffer, netdev_rss_key, len);
998}
999EXPORT_SYMBOL(netdev_rss_key_fill);
1000
d4ab4286
KJ		 1001static int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max)
1002{
1003 u32 dev_size, current_max = 0;
1004 u32 *indir;
1005 int ret;
1006
1007 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1008 !dev->ethtool_ops->get_rxfh)
1009 return -EOPNOTSUPP;
1010 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1011 if (dev_size == 0)
1012 return -EOPNOTSUPP;
1013
1014 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1015 if (!indir)
1016 return -ENOMEM;
1017
1018 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1019 if (ret)
1020 goto out;
1021
1022 while (dev_size--)
1023 current_max = max(current_max, indir[dev_size]);
1024
1025 *max = current_max;
1026
1027out:
1028 kfree(indir);
1029 return ret;
1030}
1031
a5b6ee29
BH		 1032static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
1033 void __user *useraddr)
1034{
7850f63f
BH		 1035 u32 user_size, dev_size;
1036 u32 *indir;
a5b6ee29
BH		 1037 int ret;
1038
7850f63f 1039 if (!dev->ethtool_ops->get_rxfh_indir_size ||
fe62d001 1040 !dev->ethtool_ops->get_rxfh)
7850f63f
BH		 1041 return -EOPNOTSUPP;
1042 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1043 if (dev_size == 0)
a5b6ee29
BH		 1044 return -EOPNOTSUPP;
1045
7850f63f 1046 if (copy_from_user(&user_size,
a5b6ee29 1047 useraddr + offsetof(struct ethtool_rxfh_indir, size),
7850f63f 1048 sizeof(user_size)))
a5b6ee29
BH		 1049 return -EFAULT;
1050
7850f63f
BH		 1051 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
1052 &dev_size, sizeof(dev_size)))
1053 return -EFAULT;
1054
1055 /* If the user buffer size is 0, this is just a query for the
1056 * device table size. Otherwise, if it's smaller than the
1057 * device table size it's an error.
1058 */
1059 if (user_size < dev_size)
1060 return user_size == 0 ? 0 : -EINVAL;
1061
1062 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
a5b6ee29
BH		 1063 if (!indir)
1064 return -ENOMEM;
1065
892311f6 1066 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
a5b6ee29
BH		 1067 if (ret)
1068 goto out;
1069
7850f63f
BH		 1070 if (copy_to_user(useraddr +
1071 offsetof(struct ethtool_rxfh_indir, ring_index[0]),
1072 indir, dev_size * sizeof(indir[0])))
a5b6ee29
BH		 1073 ret = -EFAULT;
1074
1075out:
1076 kfree(indir);
1077 return ret;
1078}
1079
1080static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
1081 void __user *useraddr)
1082{
7850f63f
BH		 1083 struct ethtool_rxnfc rx_rings;
1084 u32 user_size, dev_size, i;
1085 u32 *indir;
c03a14e8 1086 const struct ethtool_ops *ops = dev->ethtool_ops;
a5b6ee29 1087 int ret;
3de0b592 1088 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]);
a5b6ee29 1089
fe62d001 1090 if (!ops->get_rxfh_indir_size || !ops->set_rxfh ||
c03a14e8 1091 !ops->get_rxnfc)
7850f63f 1092 return -EOPNOTSUPP;
c03a14e8
JP		 1093
1094 dev_size = ops->get_rxfh_indir_size(dev);
7850f63f 1095 if (dev_size == 0)
a5b6ee29
BH		 1096 return -EOPNOTSUPP;
1097
7850f63f 1098 if (copy_from_user(&user_size,
a5b6ee29 1099 useraddr + offsetof(struct ethtool_rxfh_indir, size),
7850f63f 1100 sizeof(user_size)))
a5b6ee29
BH		 1101 return -EFAULT;
1102
278bc429 1103 if (user_size != 0 && user_size != dev_size)
7850f63f
BH		 1104 return -EINVAL;
1105
1106 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
a5b6ee29
BH		 1107 if (!indir)
1108 return -ENOMEM;
1109
7850f63f 1110 rx_rings.cmd = ETHTOOL_GRXRINGS;
c03a14e8 1111 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
7850f63f
BH		 1112 if (ret)
1113 goto out;
278bc429
BH		 1114
1115 if (user_size == 0) {
1116 for (i = 0; i < dev_size; i++)
1117 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1118 } else {
3de0b592
VD		 1119 ret = ethtool_copy_validate_indir(indir,
1120 useraddr + ringidx_offset,
1121 &rx_rings,
1122 dev_size);
1123 if (ret)
1124 goto out;
1125 }
1126
892311f6 1127 ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE);
d4ab4286
KJ		 1128 if (ret)
1129 goto out;
1130
1131 /* indicate whether rxfh was set to default */
1132 if (user_size == 0)
1133 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1134 else
1135 dev->priv_flags |= IFF_RXFH_CONFIGURED;
3de0b592
VD		 1136
1137out:
1138 kfree(indir);
1139 return ret;
1140}
1141
1142static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
1143 void __user *useraddr)
1144{
1145 int ret;
1146 const struct ethtool_ops *ops = dev->ethtool_ops;
f062a384 1147 u32 user_indir_size, user_key_size;
3de0b592 1148 u32 dev_indir_size = 0, dev_key_size = 0;
f062a384 1149 struct ethtool_rxfh rxfh;
3de0b592 1150 u32 total_size;
f062a384 1151 u32 indir_bytes;
3de0b592 1152 u32 *indir = NULL;
892311f6 1153 u8 dev_hfunc = 0;
3de0b592
VD		 1154 u8 *hkey = NULL;
1155 u8 *rss_config;
1156
892311f6 1157 if (!ops->get_rxfh)
3de0b592
VD		 1158 return -EOPNOTSUPP;
1159
1160 if (ops->get_rxfh_indir_size)
1161 dev_indir_size = ops->get_rxfh_indir_size(dev);
3de0b592
VD		 1162 if (ops->get_rxfh_key_size)
1163 dev_key_size = ops->get_rxfh_key_size(dev);
1164
f062a384 1165 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
3de0b592 1166 return -EFAULT;
f062a384
BH		 1167 user_indir_size = rxfh.indir_size;
1168 user_key_size = rxfh.key_size;
3de0b592 1169
f062a384 1170 /* Check that reserved fields are 0 for now */
84a1d9c4 1171 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32)
f062a384 1172 return -EINVAL;
84a1d9c4
EC		 1173 /* Most drivers don't handle rss_context, check it's 0 as well */
1174 if (rxfh.rss_context && !ops->get_rxfh_context)
1175 return -EOPNOTSUPP;
f062a384
BH		 1176
1177 rxfh.indir_size = dev_indir_size;
1178 rxfh.key_size = dev_key_size;
1179 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh)))
3de0b592
VD		 1180 return -EFAULT;
1181
3de0b592
VD		 1182 if ((user_indir_size && (user_indir_size != dev_indir_size)) ||
1183 (user_key_size && (user_key_size != dev_key_size)))
1184 return -EINVAL;
1185
1186 indir_bytes = user_indir_size * sizeof(indir[0]);
1187 total_size = indir_bytes + user_key_size;
1188 rss_config = kzalloc(total_size, GFP_USER);
1189 if (!rss_config)
1190 return -ENOMEM;
1191
1192 if (user_indir_size)
1193 indir = (u32 *)rss_config;
1194
1195 if (user_key_size)
1196 hkey = rss_config + indir_bytes;
1197
84a1d9c4
EC		 1198 if (rxfh.rss_context)
1199 ret = dev->ethtool_ops->get_rxfh_context(dev, indir, hkey,
1200 &dev_hfunc,
1201 rxfh.rss_context);
1202 else
1203 ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc);
892311f6
EP		 1204 if (ret)
1205 goto out;
3de0b592 1206
892311f6
EP		 1207 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc),
1208 &dev_hfunc, sizeof(rxfh.hfunc))) {
1209 ret = -EFAULT;
1210 } else if (copy_to_user(useraddr +
1211 offsetof(struct ethtool_rxfh, rss_config[0]),
1212 rss_config, total_size)) {
1213 ret = -EFAULT;
1214 }
1215out:
3de0b592
VD		 1216 kfree(rss_config);
1217
1218 return ret;
1219}
1220
1221static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
1222 void __user *useraddr)
1223{
1224 int ret;
1225 const struct ethtool_ops *ops = dev->ethtool_ops;
1226 struct ethtool_rxnfc rx_rings;
f062a384
BH		 1227 struct ethtool_rxfh rxfh;
1228 u32 dev_indir_size = 0, dev_key_size = 0, i;
3de0b592
VD		 1229 u32 *indir = NULL, indir_bytes = 0;
1230 u8 *hkey = NULL;
1231 u8 *rss_config;
3de0b592 1232 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]);
84a1d9c4 1233 bool delete = false;
3de0b592 1234
892311f6 1235 if (!ops->get_rxnfc || !ops->set_rxfh)
3de0b592
VD		 1236 return -EOPNOTSUPP;
1237
1238 if (ops->get_rxfh_indir_size)
1239 dev_indir_size = ops->get_rxfh_indir_size(dev);
3de0b592 1240 if (ops->get_rxfh_key_size)
d340c862 1241 dev_key_size = ops->get_rxfh_key_size(dev);
3de0b592 1242
f062a384 1243 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
3de0b592
VD		 1244 return -EFAULT;
1245
f062a384 1246 /* Check that reserved fields are 0 for now */
84a1d9c4 1247 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32)
f062a384 1248 return -EINVAL;
84a1d9c4
EC		 1249 /* Most drivers don't handle rss_context, check it's 0 as well */
1250 if (rxfh.rss_context && !ops->set_rxfh_context)
1251 return -EOPNOTSUPP;
f062a384 1252
892311f6
EP		 1253 /* If either indir, hash key or function is valid, proceed further.
1254 * Must request at least one change: indir size, hash key or function.
3de0b592 1255 */
f062a384
BH		 1256 if ((rxfh.indir_size &&
1257 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE &&
1258 rxfh.indir_size != dev_indir_size) ||
1259 (rxfh.key_size && (rxfh.key_size != dev_key_size)) ||
1260 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE &&
892311f6 1261 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE))
3de0b592
VD		 1262 return -EINVAL;
1263
f062a384 1264 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
3de0b592
VD		 1265 indir_bytes = dev_indir_size * sizeof(indir[0]);
1266
f062a384 1267 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER);
3de0b592
VD		 1268 if (!rss_config)
1269 return -ENOMEM;
1270
1271 rx_rings.cmd = ETHTOOL_GRXRINGS;
1272 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1273 if (ret)
1274 goto out;
1275
84a1d9c4
EC		 1276 /* rxfh.indir_size == 0 means reset the indir table to default (master
1277 * context) or delete the context (other RSS contexts).
f062a384 1278 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
3de0b592 1279 */
f062a384
BH		 1280 if (rxfh.indir_size &&
1281 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) {
3de0b592
VD		 1282 indir = (u32 *)rss_config;
1283 ret = ethtool_copy_validate_indir(indir,
1284 useraddr + rss_cfg_offset,
1285 &rx_rings,
f062a384 1286 rxfh.indir_size);
3de0b592 1287 if (ret)
7850f63f 1288 goto out;
f062a384 1289 } else if (rxfh.indir_size == 0) {
84a1d9c4
EC		 1290 if (rxfh.rss_context == 0) {
1291 indir = (u32 *)rss_config;
1292 for (i = 0; i < dev_indir_size; i++)
1293 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1294 } else {
1295 delete = true;
1296 }
3de0b592 1297 }
278bc429 1298
f062a384 1299 if (rxfh.key_size) {
3de0b592
VD		 1300 hkey = rss_config + indir_bytes;
1301 if (copy_from_user(hkey,
1302 useraddr + rss_cfg_offset + indir_bytes,
f062a384 1303 rxfh.key_size)) {
3de0b592
VD		 1304 ret = -EFAULT;
1305 goto out;
278bc429 1306 }
7850f63f
BH		 1307 }
1308
84a1d9c4
EC		 1309 if (rxfh.rss_context)
1310 ret = ops->set_rxfh_context(dev, indir, hkey, rxfh.hfunc,
1311 &rxfh.rss_context, delete);
1312 else
1313 ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc);
d4ab4286
KJ		 1314 if (ret)
1315 goto out;
1316
84a1d9c4
EC		 1317 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context),
1318 &rxfh.rss_context, sizeof(rxfh.rss_context)))
1319 ret = -EFAULT;
1320
1321 if (!rxfh.rss_context) {
1322 /* indicate whether rxfh was set to default */
1323 if (rxfh.indir_size == 0)
1324 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1325 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1326 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1327 }
a5b6ee29
BH		 1328
1329out:
3de0b592 1330 kfree(rss_config);
a5b6ee29
BH		 1331 return ret;
1332}
1333
1da177e4
LT		 1334static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
1335{
1336 struct ethtool_regs regs;
76fd8593 1337 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4
LT		 1338 void *regbuf;
1339 int reglen, ret;
1340
1341 if (!ops->get_regs || !ops->get_regs_len)
1342 return -EOPNOTSUPP;
1343
1344 if (copy_from_user(&regs, useraddr, sizeof(regs)))
1345 return -EFAULT;
1346
1347 reglen = ops->get_regs_len(dev);
f9fc54d3
YL		 1348 if (reglen <= 0)
1349 return reglen;
1350
1da177e4
LT		 1351 if (regs.len > reglen)
1352 regs.len = reglen;
1353
ef76c77a
DC		 1354 regbuf = vzalloc(reglen);
1355 if (!regbuf)
1356 return -ENOMEM;
1da177e4 1357
0ee4e769
VD		 1358 if (regs.len < reglen)
1359 reglen = regs.len;
1360
1da177e4
LT		 1361 ops->get_regs(dev, &regs, regbuf);
1362
1363 ret = -EFAULT;
1364 if (copy_to_user(useraddr, &regs, sizeof(regs)))
1365 goto out;
1366 useraddr += offsetof(struct ethtool_regs, data);
0ee4e769 1367 if (copy_to_user(useraddr, regbuf, reglen))
1da177e4
LT		 1368 goto out;
1369 ret = 0;
1370
1371 out:
a77f5db3 1372 vfree(regbuf);
1da177e4
LT		 1373 return ret;
1374}
1375
d73d3a8c
BH		 1376static int ethtool_reset(struct net_device *dev, char __user *useraddr)
1377{
1378 struct ethtool_value reset;
1379 int ret;
1380
1381 if (!dev->ethtool_ops->reset)
1382 return -EOPNOTSUPP;
1383
1384 if (copy_from_user(&reset, useraddr, sizeof(reset)))
1385 return -EFAULT;
1386
1387 ret = dev->ethtool_ops->reset(dev, &reset.data);
1388 if (ret)
1389 return ret;
1390
1391 if (copy_to_user(useraddr, &reset, sizeof(reset)))
1392 return -EFAULT;
1393 return 0;
1394}
1395
1da177e4
LT		 1396static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
1397{
8e557421 1398 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
1da177e4
LT		 1399
1400 if (!dev->ethtool_ops->get_wol)
1401 return -EOPNOTSUPP;
1402
1403 dev->ethtool_ops->get_wol(dev, &wol);
1404
1405 if (copy_to_user(useraddr, &wol, sizeof(wol)))
1406 return -EFAULT;
1407 return 0;
1408}
1409
1410static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
1411{
1412 struct ethtool_wolinfo wol;
61941143 1413 int ret;
1da177e4
LT		 1414
1415 if (!dev->ethtool_ops->set_wol)
1416 return -EOPNOTSUPP;
1417
1418 if (copy_from_user(&wol, useraddr, sizeof(wol)))
1419 return -EFAULT;
1420
61941143
HK		 1421 ret = dev->ethtool_ops->set_wol(dev, &wol);
1422 if (ret)
1423 return ret;
1424
1425 dev->wol_enabled = !!wol.wolopts;
1426
1427 return 0;
1da177e4
LT		 1428}
1429
80f12ecc
YM		 1430static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
1431{
1432 struct ethtool_eee edata;
1433 int rc;
1434
1435 if (!dev->ethtool_ops->get_eee)
1436 return -EOPNOTSUPP;
1437
1438 memset(&edata, 0, sizeof(struct ethtool_eee));
1439 edata.cmd = ETHTOOL_GEEE;
1440 rc = dev->ethtool_ops->get_eee(dev, &edata);
1441
1442 if (rc)
1443 return rc;
1444
1445 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1446 return -EFAULT;
1447
1448 return 0;
1449}
1450
1451static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
1452{
1453 struct ethtool_eee edata;
1454
1455 if (!dev->ethtool_ops->set_eee)
1456 return -EOPNOTSUPP;
1457
1458 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1459 return -EFAULT;
1460
1461 return dev->ethtool_ops->set_eee(dev, &edata);
1462}
1463
1da177e4
LT		 1464static int ethtool_nway_reset(struct net_device *dev)
1465{
1466 if (!dev->ethtool_ops->nway_reset)
1467 return -EOPNOTSUPP;
1468
1469 return dev->ethtool_ops->nway_reset(dev);
1470}
1471
e596e6e4
BH		 1472static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
1473{
1474 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
1475
1476 if (!dev->ethtool_ops->get_link)
1477 return -EOPNOTSUPP;
1478
1479 edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
1480
1481 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1482 return -EFAULT;
1483 return 0;
1484}
1485
081d094e
BH		 1486static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
1487 int (*getter)(struct net_device *,
1488 struct ethtool_eeprom *, u8 *),
1489 u32 total_len)
1da177e4
LT		 1490{
1491 struct ethtool_eeprom eeprom;
b131dd5d
MSB		 1492 void __user *userbuf = useraddr + sizeof(eeprom);
1493 u32 bytes_remaining;
1da177e4 1494 u8 *data;
b131dd5d 1495 int ret = 0;
1da177e4 1496
1da177e4
LT		 1497 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1498 return -EFAULT;
1499
1500 /* Check for wrap and zero */
1501 if (eeprom.offset + eeprom.len <= eeprom.offset)
1502 return -EINVAL;
1503
1504 /* Check for exceeding total eeprom len */
081d094e 1505 if (eeprom.offset + eeprom.len > total_len)
1da177e4
LT		 1506 return -EINVAL;
1507
b131dd5d 1508 data = kmalloc(PAGE_SIZE, GFP_USER);
1da177e4
LT		 1509 if (!data)
1510 return -ENOMEM;
1511
b131dd5d
MSB		 1512 bytes_remaining = eeprom.len;
1513 while (bytes_remaining > 0) {
1514 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1515
081d094e 1516 ret = getter(dev, &eeprom, data);
b131dd5d
MSB		 1517 if (ret)
1518 break;
1519 if (copy_to_user(userbuf, data, eeprom.len)) {
1520 ret = -EFAULT;
1521 break;
1522 }
1523 userbuf += eeprom.len;
1524 eeprom.offset += eeprom.len;
1525 bytes_remaining -= eeprom.len;
1526 }
1da177e4 1527
c5835df9
MSB		 1528 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
1529 eeprom.offset -= eeprom.len;
1530 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
1531 ret = -EFAULT;
1532
1da177e4
LT		 1533 kfree(data);
1534 return ret;
1535}
1536
081d094e
BH		 1537static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
1538{
1539 const struct ethtool_ops *ops = dev->ethtool_ops;
1540
e0fb6fb6
GR		 1541 if (!ops->get_eeprom || !ops->get_eeprom_len ||
1542 !ops->get_eeprom_len(dev))
081d094e
BH		 1543 return -EOPNOTSUPP;
1544
1545 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
1546 ops->get_eeprom_len(dev));
1547}
1548
1da177e4
LT		 1549static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
1550{
1551 struct ethtool_eeprom eeprom;
76fd8593 1552 const struct ethtool_ops *ops = dev->ethtool_ops;
b131dd5d
MSB		 1553 void __user *userbuf = useraddr + sizeof(eeprom);
1554 u32 bytes_remaining;
1da177e4 1555 u8 *data;
b131dd5d 1556 int ret = 0;
1da177e4 1557
e0fb6fb6
GR		 1558 if (!ops->set_eeprom || !ops->get_eeprom_len ||
1559 !ops->get_eeprom_len(dev))
1da177e4
LT		 1560 return -EOPNOTSUPP;
1561
1562 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1563 return -EFAULT;
1564
1565 /* Check for wrap and zero */
1566 if (eeprom.offset + eeprom.len <= eeprom.offset)
1567 return -EINVAL;
1568
1569 /* Check for exceeding total eeprom len */
1570 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1571 return -EINVAL;
1572
b131dd5d 1573 data = kmalloc(PAGE_SIZE, GFP_USER);
1da177e4
LT		 1574 if (!data)
1575 return -ENOMEM;
1576
b131dd5d
MSB		 1577 bytes_remaining = eeprom.len;
1578 while (bytes_remaining > 0) {
1579 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1580
1581 if (copy_from_user(data, userbuf, eeprom.len)) {
1582 ret = -EFAULT;
1583 break;
1584 }
1585 ret = ops->set_eeprom(dev, &eeprom, data);
1586 if (ret)
1587 break;
1588 userbuf += eeprom.len;
1589 eeprom.offset += eeprom.len;
1590 bytes_remaining -= eeprom.len;
1591 }
1da177e4 1592
1da177e4
LT		 1593 kfree(data);
1594 return ret;
1595}
1596
97f8aefb 1597static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1598 void __user *useraddr)
1da177e4 1599{
8e557421 1600 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1da177e4
LT		 1601
1602 if (!dev->ethtool_ops->get_coalesce)
1603 return -EOPNOTSUPP;
1604
1605 dev->ethtool_ops->get_coalesce(dev, &coalesce);
1606
1607 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1608 return -EFAULT;
1609 return 0;
1610}
1611
97f8aefb 1612static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1613 void __user *useraddr)
1da177e4
LT		 1614{
1615 struct ethtool_coalesce coalesce;
1616
fa04ae5c 1617 if (!dev->ethtool_ops->set_coalesce)
1da177e4
LT		 1618 return -EOPNOTSUPP;
1619
1620 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1621 return -EFAULT;
1622
1623 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
1624}
1625
1626static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1627{
8e557421 1628 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1da177e4
LT		 1629
1630 if (!dev->ethtool_ops->get_ringparam)
1631 return -EOPNOTSUPP;
1632
1633 dev->ethtool_ops->get_ringparam(dev, &ringparam);
1634
1635 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1636 return -EFAULT;
1637 return 0;
1638}
1639
1640static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1641{
37e2d99b 1642 struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM };
1da177e4 1643
37e2d99b 1644 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam)
1da177e4
LT		 1645 return -EOPNOTSUPP;
1646
1647 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1648 return -EFAULT;
1649
37e2d99b
EE		 1650 dev->ethtool_ops->get_ringparam(dev, &max);
1651
1652 /* ensure new ring parameters are within the maximums */
1653 if (ringparam.rx_pending > max.rx_max_pending ||
1654 ringparam.rx_mini_pending > max.rx_mini_max_pending ||
1655 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending ||
1656 ringparam.tx_pending > max.tx_max_pending)
1657 return -EINVAL;
1658
1da177e4
LT		 1659 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
1660}
1661
8b5933c3 1662static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
1663 void __user *useraddr)
1664{
1665 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
1666
1667 if (!dev->ethtool_ops->get_channels)
1668 return -EOPNOTSUPP;
1669
1670 dev->ethtool_ops->get_channels(dev, &channels);
1671
1672 if (copy_to_user(useraddr, &channels, sizeof(channels)))
1673 return -EFAULT;
1674 return 0;
1675}
1676
1677static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
1678 void __user *useraddr)
1679{
b8c8a2e2 1680 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS };
1661d346 1681 u16 from_channel, to_channel;
d4ab4286 1682 u32 max_rx_in_use = 0;
1661d346 1683 unsigned int i;
8b5933c3 1684
8bf36862 1685 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels)
8b5933c3 1686 return -EOPNOTSUPP;
1687
1688 if (copy_from_user(&channels, useraddr, sizeof(channels)))
1689 return -EFAULT;
1690
b8c8a2e2 1691 dev->ethtool_ops->get_channels(dev, &curr);
8bf36862
KJ		 1692
1693 /* ensure new counts are within the maximums */
b8c8a2e2
JK		 1694 if (channels.rx_count > curr.max_rx ||
1695 channels.tx_count > curr.max_tx ||
1696 channels.combined_count > curr.max_combined ||
1697 channels.other_count > curr.max_other)
8bf36862
KJ		 1698 return -EINVAL;
1699
d4ab4286
KJ		 1700 /* ensure the new Rx count fits within the configured Rx flow
1701 * indirection table settings */
1702 if (netif_is_rxfh_configured(dev) &&
1703 !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) &&
1704 (channels.combined_count + channels.rx_count) <= max_rx_in_use)
1705 return -EINVAL;
1706
1661d346
JK		 1707 /* Disabling channels, query zero-copy AF_XDP sockets */
1708 from_channel = channels.combined_count +
1709 min(channels.rx_count, channels.tx_count);
1710 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count);
1711 for (i = from_channel; i < to_channel; i++)
1712 if (xdp_get_umem_from_qid(dev, i))
1713 return -EINVAL;
1714
8b5933c3 1715 return dev->ethtool_ops->set_channels(dev, &channels);
1716}
1717
1da177e4
LT		 1718static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1719{
e83887f6 1720 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM };
1da177e4
LT		 1721
1722 if (!dev->ethtool_ops->get_pauseparam)
1723 return -EOPNOTSUPP;
1724
1725 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1726
1727 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1728 return -EFAULT;
1729 return 0;
1730}
1731
1732static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1733{
1734 struct ethtool_pauseparam pauseparam;
1735
e1b90c41 1736 if (!dev->ethtool_ops->set_pauseparam)
1da177e4
LT		 1737 return -EOPNOTSUPP;
1738
1739 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1740 return -EFAULT;
1741
1742 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1743}
1744
1da177e4
LT		 1745static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1746{
1747 struct ethtool_test test;
76fd8593 1748 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 1749 u64 *data;
ff03d49f 1750 int ret, test_len;
1da177e4 1751
a9828ec6 1752 if (!ops->self_test || !ops->get_sset_count)
1da177e4
LT		 1753 return -EOPNOTSUPP;
1754
a9828ec6 1755 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
ff03d49f
JG		 1756 if (test_len < 0)
1757 return test_len;
1758 WARN_ON(test_len == 0);
1759
1da177e4
LT		 1760 if (copy_from_user(&test, useraddr, sizeof(test)))
1761 return -EFAULT;
1762
ff03d49f 1763 test.len = test_len;
6da2ec56 1764 data = kmalloc_array(test_len, sizeof(u64), GFP_USER);
1da177e4
LT		 1765 if (!data)
1766 return -ENOMEM;
1767
1768 ops->self_test(dev, &test, data);
1769
1770 ret = -EFAULT;
1771 if (copy_to_user(useraddr, &test, sizeof(test)))
1772 goto out;
1773 useraddr += sizeof(test);
1774 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1775 goto out;
1776 ret = 0;
1777
1778 out:
1779 kfree(data);
1780 return ret;
1781}
1782
1783static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1784{
1785 struct ethtool_gstrings gstrings;
1da177e4
LT		 1786 u8 *data;
1787 int ret;
1788
1da177e4
LT		 1789 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1790 return -EFAULT;
1791
340ae165 1792 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
a9828ec6
BH		 1793 if (ret < 0)
1794 return ret;
4d1ceea8
AS		 1795 if (ret > S32_MAX / ETH_GSTRING_LEN)
1796 return -ENOMEM;
1797 WARN_ON_ONCE(!ret);
a9828ec6
BH		 1798
1799 gstrings.len = ret;
1da177e4 1800
3d883026
LR		 1801 if (gstrings.len) {
1802 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN));
1803 if (!data)
1804 return -ENOMEM;
1805
1806 __ethtool_get_strings(dev, gstrings.string_set, data);
1807 } else {
1808 data = NULL;
1809 }
1da177e4
LT		 1810
1811 ret = -EFAULT;
1812 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1813 goto out;
1814 useraddr += sizeof(gstrings);
4d1ceea8
AS		 1815 if (gstrings.len &&
1816 copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1da177e4
LT		 1817 goto out;
1818 ret = 0;
1819
340ae165 1820out:
4d1ceea8 1821 vfree(data);
1da177e4
LT		 1822 return ret;
1823}
1824
1825static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1826{
1827 struct ethtool_value id;
68f512f2 1828 static bool busy;
c03a14e8 1829 const struct ethtool_ops *ops = dev->ethtool_ops;
68f512f2 1830 int rc;
1da177e4 1831
c03a14e8 1832 if (!ops->set_phys_id)
1da177e4
LT		 1833 return -EOPNOTSUPP;
1834
68f512f2
BH		 1835 if (busy)
1836 return -EBUSY;
1837
1da177e4
LT		 1838 if (copy_from_user(&id, useraddr, sizeof(id)))
1839 return -EFAULT;
1840
c03a14e8 1841 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
fce55922 1842 if (rc < 0)
68f512f2
BH		 1843 return rc;
1844
1845 /* Drop the RTNL lock while waiting, but prevent reentry or
1846 * removal of the device.
1847 */
1848 busy = true;
1849 dev_hold(dev);
1850 rtnl_unlock();
1851
1852 if (rc == 0) {
1853 /* Driver will handle this itself */
1854 schedule_timeout_interruptible(
143780c6 1855 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
68f512f2 1856 } else {
fce55922
AB		 1857 /* Driver expects to be called at twice the frequency in rc */
1858 int n = rc * 2, i, interval = HZ / n;
1859
1860 /* Count down seconds */
68f512f2 1861 do {
fce55922
AB		 1862 /* Count down iterations per second */
1863 i = n;
1864 do {
1865 rtnl_lock();
c03a14e8 1866 rc = ops->set_phys_id(dev,
fce55922
AB		 1867 (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
1868 rtnl_unlock();
1869 if (rc)
1870 break;
1871 schedule_timeout_interruptible(interval);
1872 } while (!signal_pending(current) && --i != 0);
68f512f2
BH		 1873 } while (!signal_pending(current) &&
1874 (id.data == 0 || --id.data != 0));
1875 }
1876
1877 rtnl_lock();
1878 dev_put(dev);
1879 busy = false;
1880
c03a14e8 1881 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
68f512f2 1882 return rc;
1da177e4
LT		 1883}
1884
1885static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1886{
1887 struct ethtool_stats stats;
76fd8593 1888 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 1889 u64 *data;
ff03d49f 1890 int ret, n_stats;
1da177e4 1891
a9828ec6 1892 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1da177e4
LT		 1893 return -EOPNOTSUPP;
1894
a9828ec6 1895 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
ff03d49f
JG		 1896 if (n_stats < 0)
1897 return n_stats;
4d1ceea8
AS		 1898 if (n_stats > S32_MAX / sizeof(u64))
1899 return -ENOMEM;
1900 WARN_ON_ONCE(!n_stats);
1da177e4
LT		 1901 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1902 return -EFAULT;
1903
ff03d49f 1904 stats.n_stats = n_stats;
1da177e4 1905
3d883026
LR		 1906 if (n_stats) {
1907 data = vzalloc(array_size(n_stats, sizeof(u64)));
1908 if (!data)
1909 return -ENOMEM;
1910 ops->get_ethtool_stats(dev, &stats, data);
1911 } else {
1912 data = NULL;
1913 }
1da177e4
LT		 1914
1915 ret = -EFAULT;
1916 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1917 goto out;
1918 useraddr += sizeof(stats);
4d1ceea8 1919 if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
1da177e4
LT		 1920 goto out;
1921 ret = 0;
1922
1923 out:
4d1ceea8 1924 vfree(data);
1da177e4
LT		 1925 return ret;
1926}
1927
f3a40945
AL		 1928static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
1929{
99943382 1930 const struct ethtool_ops *ops = dev->ethtool_ops;
f3a40945 1931 struct phy_device *phydev = dev->phydev;
99943382 1932 struct ethtool_stats stats;
f3a40945
AL		 1933 u64 *data;
1934 int ret, n_stats;
1935
99943382 1936 if (!phydev && (!ops->get_ethtool_phy_stats || !ops->get_sset_count))
f3a40945
AL		 1937 return -EOPNOTSUPP;
1938
99943382
FF		 1939 if (dev->phydev && !ops->get_ethtool_phy_stats)
1940 n_stats = phy_ethtool_get_sset_count(dev->phydev);
1941 else
1942 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS);
f3a40945
AL		 1943 if (n_stats < 0)
1944 return n_stats;
4d1ceea8
AS		 1945 if (n_stats > S32_MAX / sizeof(u64))
1946 return -ENOMEM;
1947 WARN_ON_ONCE(!n_stats);
f3a40945
AL		 1948
1949 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1950 return -EFAULT;
1951
1952 stats.n_stats = n_stats;
f3a40945 1953
3d883026
LR		 1954 if (n_stats) {
1955 data = vzalloc(array_size(n_stats, sizeof(u64)));
1956 if (!data)
1957 return -ENOMEM;
1958
1959 if (dev->phydev && !ops->get_ethtool_phy_stats) {
1960 ret = phy_ethtool_get_stats(dev->phydev, &stats, data);
1961 if (ret < 0)
1962 goto out;
1963 } else {
1964 ops->get_ethtool_phy_stats(dev, &stats, data);
1965 }
99943382 1966 } else {
3d883026 1967 data = NULL;
99943382 1968 }
f3a40945
AL		 1969
1970 ret = -EFAULT;
1971 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1972 goto out;
1973 useraddr += sizeof(stats);
4d1ceea8 1974 if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
f3a40945
AL		 1975 goto out;
1976 ret = 0;
1977
1978 out:
4d1ceea8 1979 vfree(data);
f3a40945
AL		 1980 return ret;
1981}
1982
0bf0519d 1983static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
a6f9a705
JW		 1984{
1985 struct ethtool_perm_addr epaddr;
a6f9a705 1986
313674af 1987 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
a6f9a705
JW		 1988 return -EFAULT;
1989
313674af
MW		 1990 if (epaddr.size < dev->addr_len)
1991 return -ETOOSMALL;
1992 epaddr.size = dev->addr_len;
a6f9a705 1993
a6f9a705 1994 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
313674af 1995 return -EFAULT;
a6f9a705 1996 useraddr += sizeof(epaddr);
313674af
MW		 1997 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
1998 return -EFAULT;
1999 return 0;
a6f9a705
JW		 2000}
2001
13c99b24
JG		 2002static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
2003 u32 cmd, u32 (*actor)(struct net_device *))
3ae7c0b2 2004{
8e557421 2005 struct ethtool_value edata = { .cmd = cmd };
3ae7c0b2 2006
13c99b24 2007 if (!actor)
3ae7c0b2
JG		 2008 return -EOPNOTSUPP;
2009
13c99b24 2010 edata.data = actor(dev);
3ae7c0b2
JG		 2011
2012 if (copy_to_user(useraddr, &edata, sizeof(edata)))
2013 return -EFAULT;
2014 return 0;
2015}
2016
13c99b24
JG		 2017static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
2018 void (*actor)(struct net_device *, u32))
3ae7c0b2
JG		 2019{
2020 struct ethtool_value edata;
2021
13c99b24 2022 if (!actor)
3ae7c0b2
JG		 2023 return -EOPNOTSUPP;
2024
2025 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2026 return -EFAULT;
2027
13c99b24 2028 actor(dev, edata.data);
339bf024
JG		 2029 return 0;
2030}
2031
13c99b24
JG		 2032static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
2033 int (*actor)(struct net_device *, u32))
339bf024
JG		 2034{
2035 struct ethtool_value edata;
2036
13c99b24 2037 if (!actor)
339bf024
JG		 2038 return -EOPNOTSUPP;
2039
2040 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2041 return -EFAULT;
2042
13c99b24 2043 return actor(dev, edata.data);
339bf024
JG		 2044}
2045
97f8aefb 2046static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
2047 char __user *useraddr)
05c6a8d7
AK		 2048{
2049 struct ethtool_flash efl;
2050
2051 if (copy_from_user(&efl, useraddr, sizeof(efl)))
2052 return -EFAULT;
4eceba17 2053 efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
05c6a8d7 2054
1b45ff6c
JK		 2055 if (!dev->ethtool_ops->flash_device)
2056 return devlink_compat_flash_update(dev, efl.data);
786f5281 2057
05c6a8d7
AK		 2058 return dev->ethtool_ops->flash_device(dev, &efl);
2059}
2060
29dd54b7
AC		 2061static int ethtool_set_dump(struct net_device *dev,
2062 void __user *useraddr)
2063{
2064 struct ethtool_dump dump;
2065
2066 if (!dev->ethtool_ops->set_dump)
2067 return -EOPNOTSUPP;
2068
2069 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2070 return -EFAULT;
2071
2072 return dev->ethtool_ops->set_dump(dev, &dump);
2073}
2074
2075static int ethtool_get_dump_flag(struct net_device *dev,
2076 void __user *useraddr)
2077{
2078 int ret;
2079 struct ethtool_dump dump;
2080 const struct ethtool_ops *ops = dev->ethtool_ops;
2081
c03a14e8 2082 if (!ops->get_dump_flag)
29dd54b7
AC		 2083 return -EOPNOTSUPP;
2084
2085 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2086 return -EFAULT;
2087
2088 ret = ops->get_dump_flag(dev, &dump);
2089 if (ret)
2090 return ret;
2091
2092 if (copy_to_user(useraddr, &dump, sizeof(dump)))
2093 return -EFAULT;
2094 return 0;
2095}
2096
2097static int ethtool_get_dump_data(struct net_device *dev,
2098 void __user *useraddr)
2099{
2100 int ret;
2101 __u32 len;
2102 struct ethtool_dump dump, tmp;
2103 const struct ethtool_ops *ops = dev->ethtool_ops;
2104 void *data = NULL;
2105
c03a14e8 2106 if (!ops->get_dump_data || !ops->get_dump_flag)
29dd54b7
AC		 2107 return -EOPNOTSUPP;
2108
2109 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2110 return -EFAULT;
2111
2112 memset(&tmp, 0, sizeof(tmp));
2113 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
2114 ret = ops->get_dump_flag(dev, &tmp);
2115 if (ret)
2116 return ret;
2117
c590b5e2 2118 len = min(tmp.len, dump.len);
29dd54b7
AC		 2119 if (!len)
2120 return -EFAULT;
2121
c590b5e2
MS		 2122 /* Don't ever let the driver think there's more space available
2123 * than it requested with .get_dump_flag().
2124 */
2125 dump.len = len;
2126
2127 /* Always allocate enough space to hold the whole thing so that the
2128 * driver does not need to check the length and bother with partial
2129 * dumping.
2130 */
29dd54b7
AC		 2131 data = vzalloc(tmp.len);
2132 if (!data)
2133 return -ENOMEM;
2134 ret = ops->get_dump_data(dev, &dump, data);
2135 if (ret)
2136 goto out;
2137
c590b5e2
MS		 2138 /* There are two sane possibilities:
2139 * 1. The driver's .get_dump_data() does not touch dump.len.
2140 * 2. Or it may set dump.len to how much it really writes, which
2141 * should be tmp.len (or len if it can do a partial dump).
2142 * In any case respond to userspace with the actual length of data
2143 * it's receiving.
2144 */
2145 WARN_ON(dump.len != len && dump.len != tmp.len);
2146 dump.len = len;
2147
29dd54b7
AC		 2148 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
2149 ret = -EFAULT;
2150 goto out;
2151 }
2152 useraddr += offsetof(struct ethtool_dump, data);
2153 if (copy_to_user(useraddr, data, len))
2154 ret = -EFAULT;
2155out:
2156 vfree(data);
2157 return ret;
2158}
2159
c8f3a8c3
RC		 2160static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
2161{
2162 int err = 0;
2163 struct ethtool_ts_info info;
2164 const struct ethtool_ops *ops = dev->ethtool_ops;
2165 struct phy_device *phydev = dev->phydev;
2166
2167 memset(&info, 0, sizeof(info));
2168 info.cmd = ETHTOOL_GET_TS_INFO;
2169
2170 if (phydev && phydev->drv && phydev->drv->ts_info) {
c8f3a8c3 2171 err = phydev->drv->ts_info(phydev, &info);
c03a14e8 2172 } else if (ops->get_ts_info) {
c8f3a8c3 2173 err = ops->get_ts_info(dev, &info);
c8f3a8c3
RC		 2174 } else {
2175 info.so_timestamping =
2176 SOF_TIMESTAMPING_RX_SOFTWARE |
2177 SOF_TIMESTAMPING_SOFTWARE;
2178 info.phc_index = -1;
2179 }
2180
2181 if (err)
2182 return err;
2183
2184 if (copy_to_user(useraddr, &info, sizeof(info)))
2185 err = -EFAULT;
2186
2187 return err;
2188}
2189
2f438366
ES		 2190static int __ethtool_get_module_info(struct net_device *dev,
2191 struct ethtool_modinfo *modinfo)
2192{
2193 const struct ethtool_ops *ops = dev->ethtool_ops;
2194 struct phy_device *phydev = dev->phydev;
2195
e679c9c1
RK		 2196 if (dev->sfp_bus)
2197 return sfp_get_module_info(dev->sfp_bus, modinfo);
2198
2f438366
ES		 2199 if (phydev && phydev->drv && phydev->drv->module_info)
2200 return phydev->drv->module_info(phydev, modinfo);
2201
2202 if (ops->get_module_info)
2203 return ops->get_module_info(dev, modinfo);
2204
2205 return -EOPNOTSUPP;
2206}
2207
41c3cb6d
SH		 2208static int ethtool_get_module_info(struct net_device *dev,
2209 void __user *useraddr)
2210{
2211 int ret;
2212 struct ethtool_modinfo modinfo;
41c3cb6d
SH		 2213
2214 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
2215 return -EFAULT;
2216
2f438366 2217 ret = __ethtool_get_module_info(dev, &modinfo);
41c3cb6d
SH		 2218 if (ret)
2219 return ret;
2220
2221 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
2222 return -EFAULT;
2223
2224 return 0;
2225}
2226
2f438366
ES		 2227static int __ethtool_get_module_eeprom(struct net_device *dev,
2228 struct ethtool_eeprom *ee, u8 *data)
2229{
2230 const struct ethtool_ops *ops = dev->ethtool_ops;
2231 struct phy_device *phydev = dev->phydev;
2232
e679c9c1
RK		 2233 if (dev->sfp_bus)
2234 return sfp_get_module_eeprom(dev->sfp_bus, ee, data);
2235
2f438366
ES		 2236 if (phydev && phydev->drv && phydev->drv->module_eeprom)
2237 return phydev->drv->module_eeprom(phydev, ee, data);
2238
2239 if (ops->get_module_eeprom)
2240 return ops->get_module_eeprom(dev, ee, data);
2241
2242 return -EOPNOTSUPP;
2243}
2244
41c3cb6d
SH		 2245static int ethtool_get_module_eeprom(struct net_device *dev,
2246 void __user *useraddr)
2247{
2248 int ret;
2249 struct ethtool_modinfo modinfo;
41c3cb6d 2250
2f438366 2251 ret = __ethtool_get_module_info(dev, &modinfo);
41c3cb6d
SH		 2252 if (ret)
2253 return ret;
2254
2f438366
ES		 2255 return ethtool_get_any_eeprom(dev, useraddr,
2256 __ethtool_get_module_eeprom,
41c3cb6d
SH		 2257 modinfo.eeprom_len);
2258}
2259
f0db9b07
GV		 2260static int ethtool_tunable_valid(const struct ethtool_tunable *tuna)
2261{
2262 switch (tuna->id) {
2263 case ETHTOOL_RX_COPYBREAK:
1255a505 2264 case ETHTOOL_TX_COPYBREAK:
f0db9b07
GV		 2265 if (tuna->len != sizeof(u32) ||
2266 tuna->type_id != ETHTOOL_TUNABLE_U32)
2267 return -EINVAL;
2268 break;
e1577c1c
IK		 2269 case ETHTOOL_PFC_PREVENTION_TOUT:
2270 if (tuna->len != sizeof(u16) ||
2271 tuna->type_id != ETHTOOL_TUNABLE_U16)
2272 return -EINVAL;
2273 break;
f0db9b07
GV		 2274 default:
2275 return -EINVAL;
2276 }
2277
2278 return 0;
2279}
2280
2281static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr)
2282{
2283 int ret;
2284 struct ethtool_tunable tuna;
2285 const struct ethtool_ops *ops = dev->ethtool_ops;
2286 void *data;
2287
2288 if (!ops->get_tunable)
2289 return -EOPNOTSUPP;
2290 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2291 return -EFAULT;
2292 ret = ethtool_tunable_valid(&tuna);
2293 if (ret)
2294 return ret;
2295 data = kmalloc(tuna.len, GFP_USER);
2296 if (!data)
2297 return -ENOMEM;
2298 ret = ops->get_tunable(dev, &tuna, data);
2299 if (ret)
2300 goto out;
2301 useraddr += sizeof(tuna);
2302 ret = -EFAULT;
2303 if (copy_to_user(useraddr, data, tuna.len))
2304 goto out;
2305 ret = 0;
2306
2307out:
2308 kfree(data);
2309 return ret;
2310}
2311
2312static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr)
2313{
2314 int ret;
2315 struct ethtool_tunable tuna;
2316 const struct ethtool_ops *ops = dev->ethtool_ops;
2317 void *data;
2318
2319 if (!ops->set_tunable)
2320 return -EOPNOTSUPP;
2321 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2322 return -EFAULT;
2323 ret = ethtool_tunable_valid(&tuna);
2324 if (ret)
2325 return ret;
f0db9b07 2326 useraddr += sizeof(tuna);
30e7e3ec
AV		 2327 data = memdup_user(useraddr, tuna.len);
2328 if (IS_ERR(data))
2329 return PTR_ERR(data);
f0db9b07
GV		 2330 ret = ops->set_tunable(dev, &tuna, data);
2331
f0db9b07
GV		 2332 kfree(data);
2333 return ret;
2334}
2335
3499e87e
AB		 2336static noinline_for_stack int
2337ethtool_get_per_queue_coalesce(struct net_device *dev,
2338 void __user *useraddr,
2339 struct ethtool_per_queue_op *per_queue_opt)
421797b1
KL		 2340{
2341 u32 bit;
2342 int ret;
2343 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2344
2345 if (!dev->ethtool_ops->get_per_queue_coalesce)
2346 return -EOPNOTSUPP;
2347
2348 useraddr += sizeof(*per_queue_opt);
2349
3aa56885
YN		 2350 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask,
2351 MAX_NUM_QUEUE);
421797b1
KL		 2352
2353 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2354 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
2355
2356 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce);
2357 if (ret != 0)
2358 return ret;
2359 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
2360 return -EFAULT;
2361 useraddr += sizeof(coalesce);
2362 }
2363
2364 return 0;
2365}
2366
3499e87e
AB		 2367static noinline_for_stack int
2368ethtool_set_per_queue_coalesce(struct net_device *dev,
2369 void __user *useraddr,
2370 struct ethtool_per_queue_op *per_queue_opt)
f38d138a
KL		 2371{
2372 u32 bit;
2373 int i, ret = 0;
2374 int n_queue;
2375 struct ethtool_coalesce *backup = NULL, *tmp = NULL;
2376 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2377
2378 if ((!dev->ethtool_ops->set_per_queue_coalesce) ||
2379 (!dev->ethtool_ops->get_per_queue_coalesce))
2380 return -EOPNOTSUPP;
2381
2382 useraddr += sizeof(*per_queue_opt);
2383
3aa56885 2384 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE);
f38d138a
KL		 2385 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE);
2386 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL);
2387 if (!backup)
2388 return -ENOMEM;
2389
2390 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2391 struct ethtool_coalesce coalesce;
2392
2393 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp);
2394 if (ret != 0)
2395 goto roll_back;
2396
2397 tmp++;
2398
2399 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) {
2400 ret = -EFAULT;
2401 goto roll_back;
2402 }
2403
2404 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce);
2405 if (ret != 0)
2406 goto roll_back;
2407
2408 useraddr += sizeof(coalesce);
2409 }
2410
2411roll_back:
2412 if (ret != 0) {
2413 tmp = backup;
2414 for_each_set_bit(i, queue_mask, bit) {
2415 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp);
2416 tmp++;
2417 }
2418 }
2419 kfree(backup);
2420
2421 return ret;
2422}
2423
3499e87e 2424static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev,
58f5bbe3 2425 void __user *useraddr, u32 sub_cmd)
ac2c7ad0
KL		 2426{
2427 struct ethtool_per_queue_op per_queue_opt;
2428
2429 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt)))
2430 return -EFAULT;
2431
58f5bbe3
WW		 2432 if (per_queue_opt.sub_command != sub_cmd)
2433 return -EINVAL;
2434
ac2c7ad0 2435 switch (per_queue_opt.sub_command) {
421797b1
KL		 2436 case ETHTOOL_GCOALESCE:
2437 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt);
f38d138a
KL		 2438 case ETHTOOL_SCOALESCE:
2439 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt);
ac2c7ad0
KL		 2440 default:
2441 return -EOPNOTSUPP;
2442 };
2443}
2444
968ad9da
RL		 2445static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna)
2446{
2447 switch (tuna->id) {
65feddd5 2448 case ETHTOOL_PHY_DOWNSHIFT:
3aeb0803 2449 case ETHTOOL_PHY_FAST_LINK_DOWN:
65feddd5
RL		 2450 if (tuna->len != sizeof(u8) ||
2451 tuna->type_id != ETHTOOL_TUNABLE_U8)
2452 return -EINVAL;
2453 break;
968ad9da
RL		 2454 default:
2455 return -EINVAL;
2456 }
2457
2458 return 0;
2459}
2460
2461static int get_phy_tunable(struct net_device *dev, void __user *useraddr)
2462{
2463 int ret;
2464 struct ethtool_tunable tuna;
2465 struct phy_device *phydev = dev->phydev;
2466 void *data;
2467
2468 if (!(phydev && phydev->drv && phydev->drv->get_tunable))
2469 return -EOPNOTSUPP;
2470
2471 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2472 return -EFAULT;
2473 ret = ethtool_phy_tunable_valid(&tuna);
2474 if (ret)
2475 return ret;
2476 data = kmalloc(tuna.len, GFP_USER);
2477 if (!data)
2478 return -ENOMEM;
4b65246b 2479 mutex_lock(&phydev->lock);
968ad9da 2480 ret = phydev->drv->get_tunable(phydev, &tuna, data);
4b65246b 2481 mutex_unlock(&phydev->lock);
968ad9da
RL		 2482 if (ret)
2483 goto out;
2484 useraddr += sizeof(tuna);
2485 ret = -EFAULT;
2486 if (copy_to_user(useraddr, data, tuna.len))
2487 goto out;
2488 ret = 0;
2489
2490out:
2491 kfree(data);
2492 return ret;
2493}
2494
2495static int set_phy_tunable(struct net_device *dev, void __user *useraddr)
2496{
2497 int ret;
2498 struct ethtool_tunable tuna;
2499 struct phy_device *phydev = dev->phydev;
2500 void *data;
2501
2502 if (!(phydev && phydev->drv && phydev->drv->set_tunable))
2503 return -EOPNOTSUPP;
2504 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2505 return -EFAULT;
2506 ret = ethtool_phy_tunable_valid(&tuna);
2507 if (ret)
2508 return ret;
968ad9da 2509 useraddr += sizeof(tuna);
30e7e3ec
AV		 2510 data = memdup_user(useraddr, tuna.len);
2511 if (IS_ERR(data))
2512 return PTR_ERR(data);
4b65246b 2513 mutex_lock(&phydev->lock);
968ad9da 2514 ret = phydev->drv->set_tunable(phydev, &tuna, data);
4b65246b 2515 mutex_unlock(&phydev->lock);
968ad9da 2516
968ad9da
RL		 2517 kfree(data);
2518 return ret;
2519}
2520
1a5f3da2
VSR		 2521static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr)
2522{
e83887f6 2523 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM };
a6d50512 2524 int rc;
1a5f3da2
VSR		 2525
2526 if (!dev->ethtool_ops->get_fecparam)
2527 return -EOPNOTSUPP;
2528
a6d50512
EC		 2529 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam);
2530 if (rc)
2531 return rc;
1a5f3da2
VSR		 2532
2533 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam)))
2534 return -EFAULT;
2535 return 0;
2536}
2537
2538static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr)
2539{
2540 struct ethtool_fecparam fecparam;
2541
2542 if (!dev->ethtool_ops->set_fecparam)
2543 return -EOPNOTSUPP;
2544
2545 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam)))
2546 return -EFAULT;
2547
2548 return dev->ethtool_ops->set_fecparam(dev, &fecparam);
2549}
2550
600fed5e 2551/* The main entry point in this file. Called from net/core/dev_ioctl.c */
1da177e4 2552
881d966b 2553int dev_ethtool(struct net *net, struct ifreq *ifr)
1da177e4 2554{
881d966b 2555 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
1da177e4 2556 void __user *useraddr = ifr->ifr_data;
ac2c7ad0 2557 u32 ethcmd, sub_cmd;
1da177e4 2558 int rc;
b29d3145 2559 netdev_features_t old_features;
1da177e4 2560
1da177e4
LT		 2561 if (!dev || !netif_device_present(dev))
2562 return -ENODEV;
2563
97f8aefb 2564 if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
1da177e4
LT		 2565 return -EFAULT;
2566
ac2c7ad0
KL		 2567 if (ethcmd == ETHTOOL_PERQUEUE) {
2568 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd)))
2569 return -EFAULT;
2570 } else {
2571 sub_cmd = ethcmd;
2572 }
75f3123c 2573 /* Allow some commands to be done by anyone */
ac2c7ad0 2574 switch (sub_cmd) {
0fdc100b 2575 case ETHTOOL_GSET:
75f3123c 2576 case ETHTOOL_GDRVINFO:
75f3123c 2577 case ETHTOOL_GMSGLVL:
2da45db2 2578 case ETHTOOL_GLINK:
75f3123c
SH		 2579 case ETHTOOL_GCOALESCE:
2580 case ETHTOOL_GRINGPARAM:
2581 case ETHTOOL_GPAUSEPARAM:
2582 case ETHTOOL_GRXCSUM:
2583 case ETHTOOL_GTXCSUM:
2584 case ETHTOOL_GSG:
f80400a2 2585 case ETHTOOL_GSSET_INFO:
75f3123c 2586 case ETHTOOL_GSTRINGS:
2da45db2 2587 case ETHTOOL_GSTATS:
f3a40945 2588 case ETHTOOL_GPHYSTATS:
75f3123c
SH		 2589 case ETHTOOL_GTSO:
2590 case ETHTOOL_GPERMADDR:
474ff260 2591 case ETHTOOL_GUFO:
75f3123c 2592 case ETHTOOL_GGSO:
1cab819b 2593 case ETHTOOL_GGRO:
339bf024
JG		 2594 case ETHTOOL_GFLAGS:
2595 case ETHTOOL_GPFLAGS:
0853ad66 2596 case ETHTOOL_GRXFH:
59089d8d
SB		 2597 case ETHTOOL_GRXRINGS:
2598 case ETHTOOL_GRXCLSRLCNT:
2599 case ETHTOOL_GRXCLSRULE:
2600 case ETHTOOL_GRXCLSRLALL:
2da45db2 2601 case ETHTOOL_GRXFHINDIR:
3de0b592 2602 case ETHTOOL_GRSSH:
5455c699 2603 case ETHTOOL_GFEATURES:
2da45db2 2604 case ETHTOOL_GCHANNELS:
c8f3a8c3 2605 case ETHTOOL_GET_TS_INFO:
2da45db2 2606 case ETHTOOL_GEEE:
f0db9b07 2607 case ETHTOOL_GTUNABLE:
968ad9da 2608 case ETHTOOL_PHY_GTUNABLE:
8006f6bf 2609 case ETHTOOL_GLINKSETTINGS:
1a5f3da2 2610 case ETHTOOL_GFECPARAM:
75f3123c
SH		 2611 break;
2612 default:
5e1fccc0 2613 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
75f3123c
SH		 2614 return -EPERM;
2615 }
2616
97f8aefb 2617 if (dev->ethtool_ops->begin) {
2618 rc = dev->ethtool_ops->begin(dev);
2619 if (rc < 0)
1da177e4 2620 return rc;
97f8aefb 2621 }
d8a33ac4
SH		 2622 old_features = dev->features;
2623
1da177e4
LT		 2624 switch (ethcmd) {
2625 case ETHTOOL_GSET:
2626 rc = ethtool_get_settings(dev, useraddr);
2627 break;
2628 case ETHTOOL_SSET:
2629 rc = ethtool_set_settings(dev, useraddr);
2630 break;
2631 case ETHTOOL_GDRVINFO:
2632 rc = ethtool_get_drvinfo(dev, useraddr);
1da177e4
LT		 2633 break;
2634 case ETHTOOL_GREGS:
2635 rc = ethtool_get_regs(dev, useraddr);
2636 break;
2637 case ETHTOOL_GWOL:
2638 rc = ethtool_get_wol(dev, useraddr);
2639 break;
2640 case ETHTOOL_SWOL:
2641 rc = ethtool_set_wol(dev, useraddr);
2642 break;
2643 case ETHTOOL_GMSGLVL:
13c99b24
JG		 2644 rc = ethtool_get_value(dev, useraddr, ethcmd,
2645 dev->ethtool_ops->get_msglevel);
1da177e4
LT		 2646 break;
2647 case ETHTOOL_SMSGLVL:
13c99b24
JG		 2648 rc = ethtool_set_value_void(dev, useraddr,
2649 dev->ethtool_ops->set_msglevel);
1da177e4 2650 break;
80f12ecc
YM		 2651 case ETHTOOL_GEEE:
2652 rc = ethtool_get_eee(dev, useraddr);
2653 break;
2654 case ETHTOOL_SEEE:
2655 rc = ethtool_set_eee(dev, useraddr);
2656 break;
1da177e4
LT		 2657 case ETHTOOL_NWAY_RST:
2658 rc = ethtool_nway_reset(dev);
2659 break;
2660 case ETHTOOL_GLINK:
e596e6e4 2661 rc = ethtool_get_link(dev, useraddr);
1da177e4
LT		 2662 break;
2663 case ETHTOOL_GEEPROM:
2664 rc = ethtool_get_eeprom(dev, useraddr);
2665 break;
2666 case ETHTOOL_SEEPROM:
2667 rc = ethtool_set_eeprom(dev, useraddr);
2668 break;
2669 case ETHTOOL_GCOALESCE:
2670 rc = ethtool_get_coalesce(dev, useraddr);
2671 break;
2672 case ETHTOOL_SCOALESCE:
2673 rc = ethtool_set_coalesce(dev, useraddr);
2674 break;
2675 case ETHTOOL_GRINGPARAM:
2676 rc = ethtool_get_ringparam(dev, useraddr);
2677 break;
2678 case ETHTOOL_SRINGPARAM:
2679 rc = ethtool_set_ringparam(dev, useraddr);
2680 break;
2681 case ETHTOOL_GPAUSEPARAM:
2682 rc = ethtool_get_pauseparam(dev, useraddr);
2683 break;
2684 case ETHTOOL_SPAUSEPARAM:
2685 rc = ethtool_set_pauseparam(dev, useraddr);
2686 break;
1da177e4
LT		 2687 case ETHTOOL_TEST:
2688 rc = ethtool_self_test(dev, useraddr);
2689 break;
2690 case ETHTOOL_GSTRINGS:
2691 rc = ethtool_get_strings(dev, useraddr);
2692 break;
2693 case ETHTOOL_PHYS_ID:
2694 rc = ethtool_phys_id(dev, useraddr);
2695 break;
2696 case ETHTOOL_GSTATS:
2697 rc = ethtool_get_stats(dev, useraddr);
2698 break;
a6f9a705
JW		 2699 case ETHTOOL_GPERMADDR:
2700 rc = ethtool_get_perm_addr(dev, useraddr);
2701 break;
3ae7c0b2 2702 case ETHTOOL_GFLAGS:
13c99b24 2703 rc = ethtool_get_value(dev, useraddr, ethcmd,
bc5787c6 2704 __ethtool_get_flags);
3ae7c0b2
JG		 2705 break;
2706 case ETHTOOL_SFLAGS:
da8ac86c 2707 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
3ae7c0b2 2708 break;
339bf024 2709 case ETHTOOL_GPFLAGS:
13c99b24
JG		 2710 rc = ethtool_get_value(dev, useraddr, ethcmd,
2711 dev->ethtool_ops->get_priv_flags);
339bf024
JG		 2712 break;
2713 case ETHTOOL_SPFLAGS:
13c99b24
JG		 2714 rc = ethtool_set_value(dev, useraddr,
2715 dev->ethtool_ops->set_priv_flags);
339bf024 2716 break;
0853ad66 2717 case ETHTOOL_GRXFH:
59089d8d
SB		 2718 case ETHTOOL_GRXRINGS:
2719 case ETHTOOL_GRXCLSRLCNT:
2720 case ETHTOOL_GRXCLSRULE:
2721 case ETHTOOL_GRXCLSRLALL:
bf988435 2722 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
0853ad66
SB		 2723 break;
2724 case ETHTOOL_SRXFH:
59089d8d
SB		 2725 case ETHTOOL_SRXCLSRLDEL:
2726 case ETHTOOL_SRXCLSRLINS:
bf988435 2727 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
0853ad66 2728 break;
05c6a8d7
AK		 2729 case ETHTOOL_FLASHDEV:
2730 rc = ethtool_flash_device(dev, useraddr);
2731 break;
d73d3a8c
BH		 2732 case ETHTOOL_RESET:
2733 rc = ethtool_reset(dev, useraddr);
2734 break;
723b2f57
JG		 2735 case ETHTOOL_GSSET_INFO:
2736 rc = ethtool_get_sset_info(dev, useraddr);
2737 break;
a5b6ee29
BH		 2738 case ETHTOOL_GRXFHINDIR:
2739 rc = ethtool_get_rxfh_indir(dev, useraddr);
2740 break;
2741 case ETHTOOL_SRXFHINDIR:
2742 rc = ethtool_set_rxfh_indir(dev, useraddr);
2743 break;
3de0b592
VD		 2744 case ETHTOOL_GRSSH:
2745 rc = ethtool_get_rxfh(dev, useraddr);
2746 break;
2747 case ETHTOOL_SRSSH:
2748 rc = ethtool_set_rxfh(dev, useraddr);
2749 break;
5455c699
MM		 2750 case ETHTOOL_GFEATURES:
2751 rc = ethtool_get_features(dev, useraddr);
2752 break;
2753 case ETHTOOL_SFEATURES:
2754 rc = ethtool_set_features(dev, useraddr);
2755 break;
0a417704 2756 case ETHTOOL_GTXCSUM:
e83d360d 2757 case ETHTOOL_GRXCSUM:
0a417704
MM		 2758 case ETHTOOL_GSG:
2759 case ETHTOOL_GTSO:
0a417704
MM		 2760 case ETHTOOL_GGSO:
2761 case ETHTOOL_GGRO:
2762 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
2763 break;
2764 case ETHTOOL_STXCSUM:
e83d360d 2765 case ETHTOOL_SRXCSUM:
0a417704
MM		 2766 case ETHTOOL_SSG:
2767 case ETHTOOL_STSO:
0a417704
MM		 2768 case ETHTOOL_SGSO:
2769 case ETHTOOL_SGRO:
2770 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
2771 break;
8b5933c3 2772 case ETHTOOL_GCHANNELS:
2773 rc = ethtool_get_channels(dev, useraddr);
2774 break;
2775 case ETHTOOL_SCHANNELS:
2776 rc = ethtool_set_channels(dev, useraddr);
2777 break;
29dd54b7
AC		 2778 case ETHTOOL_SET_DUMP:
2779 rc = ethtool_set_dump(dev, useraddr);
2780 break;
2781 case ETHTOOL_GET_DUMP_FLAG:
2782 rc = ethtool_get_dump_flag(dev, useraddr);
2783 break;
2784 case ETHTOOL_GET_DUMP_DATA:
2785 rc = ethtool_get_dump_data(dev, useraddr);
2786 break;
c8f3a8c3
RC		 2787 case ETHTOOL_GET_TS_INFO:
2788 rc = ethtool_get_ts_info(dev, useraddr);
2789 break;
41c3cb6d
SH		 2790 case ETHTOOL_GMODULEINFO:
2791 rc = ethtool_get_module_info(dev, useraddr);
2792 break;
2793 case ETHTOOL_GMODULEEEPROM:
2794 rc = ethtool_get_module_eeprom(dev, useraddr);
2795 break;
f0db9b07
GV		 2796 case ETHTOOL_GTUNABLE:
2797 rc = ethtool_get_tunable(dev, useraddr);
2798 break;
2799 case ETHTOOL_STUNABLE:
2800 rc = ethtool_set_tunable(dev, useraddr);
2801 break;
f3a40945
AL		 2802 case ETHTOOL_GPHYSTATS:
2803 rc = ethtool_get_phy_stats(dev, useraddr);
2804 break;
ac2c7ad0 2805 case ETHTOOL_PERQUEUE:
58f5bbe3 2806 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd);
ac2c7ad0 2807 break;
3f1ac7a7
DD		 2808 case ETHTOOL_GLINKSETTINGS:
2809 rc = ethtool_get_link_ksettings(dev, useraddr);
2810 break;
2811 case ETHTOOL_SLINKSETTINGS:
2812 rc = ethtool_set_link_ksettings(dev, useraddr);
2813 break;
968ad9da
RL		 2814 case ETHTOOL_PHY_GTUNABLE:
2815 rc = get_phy_tunable(dev, useraddr);
2816 break;
2817 case ETHTOOL_PHY_STUNABLE:
2818 rc = set_phy_tunable(dev, useraddr);
2819 break;
1a5f3da2
VSR		 2820 case ETHTOOL_GFECPARAM:
2821 rc = ethtool_get_fecparam(dev, useraddr);
2822 break;
2823 case ETHTOOL_SFECPARAM:
2824 rc = ethtool_set_fecparam(dev, useraddr);
2825 break;
1da177e4 2826 default:
61a44b9c 2827 rc = -EOPNOTSUPP;
1da177e4 2828 }
4ec93edb 2829
e71a4783 2830 if (dev->ethtool_ops->complete)
1da177e4 2831 dev->ethtool_ops->complete(dev);
d8a33ac4
SH		 2832
2833 if (old_features != dev->features)
2834 netdev_features_change(dev);
2835
1da177e4 2836 return rc;
1da177e4 2837}
eca4205f
PNA		 2838
2839struct ethtool_rx_flow_key {
2840 struct flow_dissector_key_basic basic;
2841 union {
2842 struct flow_dissector_key_ipv4_addrs ipv4;
2843 struct flow_dissector_key_ipv6_addrs ipv6;
2844 };
2845 struct flow_dissector_key_ports tp;
2846 struct flow_dissector_key_ip ip;
2847 struct flow_dissector_key_vlan vlan;
2848 struct flow_dissector_key_eth_addrs eth_addrs;
2849} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
2850
2851struct ethtool_rx_flow_match {
2852 struct flow_dissector dissector;
2853 struct ethtool_rx_flow_key key;
2854 struct ethtool_rx_flow_key mask;
2855};
2856
2857struct ethtool_rx_flow_rule *
2858ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input)
2859{
2860 const struct ethtool_rx_flow_spec *fs = input->fs;
2861 static struct in6_addr zero_addr = {};
2862 struct ethtool_rx_flow_match *match;
2863 struct ethtool_rx_flow_rule *flow;
2864 struct flow_action_entry *act;
2865
2866 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) +
2867 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL);
2868 if (!flow)
2869 return ERR_PTR(-ENOMEM);
2870
2871 /* ethtool_rx supports only one single action per rule. */
2872 flow->rule = flow_rule_alloc(1);
2873 if (!flow->rule) {
2874 kfree(flow);
2875 return ERR_PTR(-ENOMEM);
2876 }
2877
2878 match = (struct ethtool_rx_flow_match *)flow->priv;
2879 flow->rule->match.dissector = &match->dissector;
2880 flow->rule->match.mask = &match->mask;
2881 flow->rule->match.key = &match->key;
2882
2883 match->mask.basic.n_proto = htons(0xffff);
2884
2885 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) {
5b9469a2
MC		 2886 case ETHER_FLOW: {
2887 const struct ethhdr *ether_spec, *ether_m_spec;
2888
2889 ether_spec = &fs->h_u.ether_spec;
2890 ether_m_spec = &fs->m_u.ether_spec;
2891
2892 if (!is_zero_ether_addr(ether_m_spec->h_source)) {
2893 ether_addr_copy(match->key.eth_addrs.src,
2894 ether_spec->h_source);
2895 ether_addr_copy(match->mask.eth_addrs.src,
2896 ether_m_spec->h_source);
2897 }
2898 if (!is_zero_ether_addr(ether_m_spec->h_dest)) {
2899 ether_addr_copy(match->key.eth_addrs.dst,
2900 ether_spec->h_dest);
2901 ether_addr_copy(match->mask.eth_addrs.dst,
2902 ether_m_spec->h_dest);
2903 }
2904 if (ether_m_spec->h_proto) {
2905 match->key.basic.n_proto = ether_spec->h_proto;
2906 match->mask.basic.n_proto = ether_m_spec->h_proto;
2907 }
2908 }
2909 break;
eca4205f
PNA		 2910 case TCP_V4_FLOW:
2911 case UDP_V4_FLOW: {
2912 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec;
2913
2914 match->key.basic.n_proto = htons(ETH_P_IP);
2915
2916 v4_spec = &fs->h_u.tcp_ip4_spec;
2917 v4_m_spec = &fs->m_u.tcp_ip4_spec;
2918
2919 if (v4_m_spec->ip4src) {
2920 match->key.ipv4.src = v4_spec->ip4src;
2921 match->mask.ipv4.src = v4_m_spec->ip4src;
2922 }
2923 if (v4_m_spec->ip4dst) {
2924 match->key.ipv4.dst = v4_spec->ip4dst;
2925 match->mask.ipv4.dst = v4_m_spec->ip4dst;
2926 }
2927 if (v4_m_spec->ip4src ||
2928 v4_m_spec->ip4dst) {
2929 match->dissector.used_keys |=
2930 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS);
2931 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] =
2932 offsetof(struct ethtool_rx_flow_key, ipv4);
2933 }
2934 if (v4_m_spec->psrc) {
2935 match->key.tp.src = v4_spec->psrc;
2936 match->mask.tp.src = v4_m_spec->psrc;
2937 }
2938 if (v4_m_spec->pdst) {
2939 match->key.tp.dst = v4_spec->pdst;
2940 match->mask.tp.dst = v4_m_spec->pdst;
2941 }
2942 if (v4_m_spec->psrc ||
2943 v4_m_spec->pdst) {
2944 match->dissector.used_keys |=
2945 BIT(FLOW_DISSECTOR_KEY_PORTS);
2946 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] =
2947 offsetof(struct ethtool_rx_flow_key, tp);
2948 }
2949 if (v4_m_spec->tos) {
2950 match->key.ip.tos = v4_spec->tos;
2951 match->mask.ip.tos = v4_m_spec->tos;
2952 match->dissector.used_keys |=
2953 BIT(FLOW_DISSECTOR_KEY_IP);
2954 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] =
2955 offsetof(struct ethtool_rx_flow_key, ip);
2956 }
2957 }
2958 break;
2959 case TCP_V6_FLOW:
2960 case UDP_V6_FLOW: {
2961 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec;
2962
2963 match->key.basic.n_proto = htons(ETH_P_IPV6);
2964
2965 v6_spec = &fs->h_u.tcp_ip6_spec;
2966 v6_m_spec = &fs->m_u.tcp_ip6_spec;
2967 if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr))) {
2968 memcpy(&match->key.ipv6.src, v6_spec->ip6src,
2969 sizeof(match->key.ipv6.src));
2970 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src,
2971 sizeof(match->mask.ipv6.src));
2972 }
2973 if (memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) {
2974 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst,
2975 sizeof(match->key.ipv6.dst));
2976 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst,
2977 sizeof(match->mask.ipv6.dst));
2978 }
2979 if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr)) ||
2980 memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr))) {
2981 match->dissector.used_keys |=
2982 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS);
2983 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] =
2984 offsetof(struct ethtool_rx_flow_key, ipv6);
2985 }
2986 if (v6_m_spec->psrc) {
2987 match->key.tp.src = v6_spec->psrc;
2988 match->mask.tp.src = v6_m_spec->psrc;
2989 }
2990 if (v6_m_spec->pdst) {
2991 match->key.tp.dst = v6_spec->pdst;
2992 match->mask.tp.dst = v6_m_spec->pdst;
2993 }
2994 if (v6_m_spec->psrc ||
2995 v6_m_spec->pdst) {
2996 match->dissector.used_keys |=
2997 BIT(FLOW_DISSECTOR_KEY_PORTS);
2998 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] =
2999 offsetof(struct ethtool_rx_flow_key, tp);
3000 }
3001 if (v6_m_spec->tclass) {
3002 match->key.ip.tos = v6_spec->tclass;
3003 match->mask.ip.tos = v6_m_spec->tclass;
3004 match->dissector.used_keys |=
3005 BIT(FLOW_DISSECTOR_KEY_IP);
3006 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] =
3007 offsetof(struct ethtool_rx_flow_key, ip);
3008 }
3009 }
3010 break;
3011 default:
3012 ethtool_rx_flow_rule_destroy(flow);
3013 return ERR_PTR(-EINVAL);
3014 }
3015
3016 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) {
3017 case TCP_V4_FLOW:
3018 case TCP_V6_FLOW:
3019 match->key.basic.ip_proto = IPPROTO_TCP;
3020 break;
3021 case UDP_V4_FLOW:
3022 case UDP_V6_FLOW:
3023 match->key.basic.ip_proto = IPPROTO_UDP;
3024 break;
3025 }
3026 match->mask.basic.ip_proto = 0xff;
3027
3028 match->dissector.used_keys |= BIT(FLOW_DISSECTOR_KEY_BASIC);
3029 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] =
3030 offsetof(struct ethtool_rx_flow_key, basic);
3031
3032 if (fs->flow_type & FLOW_EXT) {
3033 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext;
3034 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext;
3035
b73484b2 3036 if (ext_m_spec->vlan_etype) {
eca4205f
PNA		 3037 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype;
3038 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype;
b73484b2 3039 }
eca4205f 3040
b73484b2 3041 if (ext_m_spec->vlan_tci) {
eca4205f
PNA		 3042 match->key.vlan.vlan_id =
3043 ntohs(ext_h_spec->vlan_tci) & 0x0fff;
3044 match->mask.vlan.vlan_id =
3045 ntohs(ext_m_spec->vlan_tci) & 0x0fff;
3046
f0d2ca15
MC		 3047 match->key.vlan.vlan_dei =
3048 !!(ext_h_spec->vlan_tci & htons(0x1000));
3049 match->mask.vlan.vlan_dei =
3050 !!(ext_m_spec->vlan_tci & htons(0x1000));
3051
eca4205f
PNA		 3052 match->key.vlan.vlan_priority =
3053 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13;
3054 match->mask.vlan.vlan_priority =
3055 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13;
b73484b2 3056 }
eca4205f 3057
b73484b2
MC		 3058 if (ext_m_spec->vlan_etype ||
3059 ext_m_spec->vlan_tci) {
eca4205f
PNA		 3060 match->dissector.used_keys |=
3061 BIT(FLOW_DISSECTOR_KEY_VLAN);
3062 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] =
3063 offsetof(struct ethtool_rx_flow_key, vlan);
3064 }
3065 }
3066 if (fs->flow_type & FLOW_MAC_EXT) {
3067 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext;
3068 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext;
3069
8b34ec65
NC		 3070 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest,
3071 ETH_ALEN);
3072 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest,
3073 ETH_ALEN);
3074
3075 match->dissector.used_keys |=
3076 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS);
3077 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] =
3078 offsetof(struct ethtool_rx_flow_key, eth_addrs);
eca4205f
PNA		 3079 }
3080
3081 act = &flow->rule->action.entries[0];
3082 switch (fs->ring_cookie) {
3083 case RX_CLS_FLOW_DISC:
3084 act->id = FLOW_ACTION_DROP;
3085 break;
3086 case RX_CLS_FLOW_WAKE:
3087 act->id = FLOW_ACTION_WAKE;
3088 break;
3089 default:
3090 act->id = FLOW_ACTION_QUEUE;
3091 if (fs->flow_type & FLOW_RSS)
3092 act->queue.ctx = input->rss_ctx;
3093
3094 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie);
3095 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie);
3096 break;
3097 }
3098
3099 return flow;
3100}
3101EXPORT_SYMBOL(ethtool_rx_flow_rule_create);
3102
3103void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow)
3104{
3105 kfree(flow->rule);
3106 kfree(flow);
3107}
3108EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy);
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