1 // SPDX-License-Identifier: GPL-2.0-or-later 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 7 * the information ethtool needs. 8 */ 9 10 #include <linux/compat.h> 11 #include <linux/etherdevice.h> 12 #include <linux/module.h> 13 #include <linux/types.h> 14 #include <linux/capability.h> 15 #include <linux/errno.h> 16 #include <linux/ethtool.h> 17 #include <linux/netdevice.h> 18 #include <linux/net_tstamp.h> 19 #include <linux/phy.h> 20 #include <linux/bitops.h> 21 #include <linux/uaccess.h> 22 #include <linux/vmalloc.h> 23 #include <linux/sfp.h> 24 #include <linux/slab.h> 25 #include <linux/rtnetlink.h> 26 #include <linux/sched/signal.h> 27 #include <linux/net.h> 28 #include <linux/pm_runtime.h> 29 #include <linux/utsname.h> 30 #include <net/devlink.h> 31 #include <net/ipv6.h> 32 #include <net/xdp_sock_drv.h> 33 #include <net/flow_offload.h> 34 #include <linux/ethtool_netlink.h> 35 #include "common.h" 36 37 /* State held across locks and calls for commands which have devlink fallback */ 38 struct ethtool_devlink_compat { 39 struct devlink *devlink; 40 union { 41 struct ethtool_flash efl; 42 struct ethtool_drvinfo info; 43 }; 44 }; 45 46 static struct devlink *netdev_to_devlink_get(struct net_device *dev) 47 { 48 if (!dev->devlink_port) 49 return NULL; 50 return devlink_try_get(dev->devlink_port->devlink); 51 } 52 53 /* 54 * Some useful ethtool_ops methods that're device independent. 55 * If we find that all drivers want to do the same thing here, 56 * we can turn these into dev_() function calls. 57 */ 58 59 u32 ethtool_op_get_link(struct net_device *dev) 60 { 61 /* Synchronize carrier state with link watch, see also rtnl_getlink() */ 62 linkwatch_sync_dev(dev); 63 64 return netif_carrier_ok(dev) ? 1 : 0; 65 } 66 EXPORT_SYMBOL(ethtool_op_get_link); 67 68 int ethtool_op_get_ts_info(struct net_device *dev, 69 struct kernel_ethtool_ts_info *info) 70 { 71 info->so_timestamping = 72 SOF_TIMESTAMPING_TX_SOFTWARE | 73 SOF_TIMESTAMPING_RX_SOFTWARE | 74 SOF_TIMESTAMPING_SOFTWARE; 75 info->phc_index = -1; 76 return 0; 77 } 78 EXPORT_SYMBOL(ethtool_op_get_ts_info); 79 80 /* Handlers for each ethtool command */ 81 82 static int ethtool_get_features(struct net_device *dev, void __user *useraddr) 83 { 84 struct ethtool_gfeatures cmd = { 85 .cmd = ETHTOOL_GFEATURES, 86 .size = ETHTOOL_DEV_FEATURE_WORDS, 87 }; 88 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 89 u32 __user *sizeaddr; 90 u32 copy_size; 91 int i; 92 93 /* in case feature bits run out again */ 94 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); 95 96 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 97 features[i].available = (u32)(dev->hw_features >> (32 * i)); 98 features[i].requested = (u32)(dev->wanted_features >> (32 * i)); 99 features[i].active = (u32)(dev->features >> (32 * i)); 100 features[i].never_changed = 101 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); 102 } 103 104 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); 105 if (get_user(copy_size, sizeaddr)) 106 return -EFAULT; 107 108 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) 109 copy_size = ETHTOOL_DEV_FEATURE_WORDS; 110 111 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 112 return -EFAULT; 113 useraddr += sizeof(cmd); 114 if (copy_to_user(useraddr, features, 115 array_size(copy_size, sizeof(*features)))) 116 return -EFAULT; 117 118 return 0; 119 } 120 121 static int ethtool_set_features(struct net_device *dev, void __user *useraddr) 122 { 123 struct ethtool_sfeatures cmd; 124 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 125 netdev_features_t wanted = 0, valid = 0; 126 int i, ret = 0; 127 128 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 129 return -EFAULT; 130 useraddr += sizeof(cmd); 131 132 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) 133 return -EINVAL; 134 135 if (copy_from_user(features, useraddr, sizeof(features))) 136 return -EFAULT; 137 138 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 139 valid |= (netdev_features_t)features[i].valid << (32 * i); 140 wanted |= (netdev_features_t)features[i].requested << (32 * i); 141 } 142 143 if (valid & ~NETIF_F_ETHTOOL_BITS) 144 return -EINVAL; 145 146 if (valid & ~dev->hw_features) { 147 valid &= dev->hw_features; 148 ret |= ETHTOOL_F_UNSUPPORTED; 149 } 150 151 dev->wanted_features &= ~valid; 152 dev->wanted_features |= wanted & valid; 153 __netdev_update_features(dev); 154 155 if ((dev->wanted_features ^ dev->features) & valid) 156 ret |= ETHTOOL_F_WISH; 157 158 return ret; 159 } 160 161 static int __ethtool_get_sset_count(struct net_device *dev, int sset) 162 { 163 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 164 const struct ethtool_ops *ops = dev->ethtool_ops; 165 166 if (sset == ETH_SS_FEATURES) 167 return ARRAY_SIZE(netdev_features_strings); 168 169 if (sset == ETH_SS_RSS_HASH_FUNCS) 170 return ARRAY_SIZE(rss_hash_func_strings); 171 172 if (sset == ETH_SS_TUNABLES) 173 return ARRAY_SIZE(tunable_strings); 174 175 if (sset == ETH_SS_PHY_TUNABLES) 176 return ARRAY_SIZE(phy_tunable_strings); 177 178 if (sset == ETH_SS_PHY_STATS && dev->phydev && 179 !ops->get_ethtool_phy_stats && 180 phy_ops && phy_ops->get_sset_count) 181 return phy_ops->get_sset_count(dev->phydev); 182 183 if (sset == ETH_SS_LINK_MODES) 184 return __ETHTOOL_LINK_MODE_MASK_NBITS; 185 186 if (ops->get_sset_count && ops->get_strings) 187 return ops->get_sset_count(dev, sset); 188 else 189 return -EOPNOTSUPP; 190 } 191 192 static void __ethtool_get_strings(struct net_device *dev, 193 u32 stringset, u8 *data) 194 { 195 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 196 const struct ethtool_ops *ops = dev->ethtool_ops; 197 198 if (stringset == ETH_SS_FEATURES) 199 memcpy(data, netdev_features_strings, 200 sizeof(netdev_features_strings)); 201 else if (stringset == ETH_SS_RSS_HASH_FUNCS) 202 memcpy(data, rss_hash_func_strings, 203 sizeof(rss_hash_func_strings)); 204 else if (stringset == ETH_SS_TUNABLES) 205 memcpy(data, tunable_strings, sizeof(tunable_strings)); 206 else if (stringset == ETH_SS_PHY_TUNABLES) 207 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); 208 else if (stringset == ETH_SS_PHY_STATS && dev->phydev && 209 !ops->get_ethtool_phy_stats && phy_ops && 210 phy_ops->get_strings) 211 phy_ops->get_strings(dev->phydev, data); 212 else if (stringset == ETH_SS_LINK_MODES) 213 memcpy(data, link_mode_names, 214 __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN); 215 else 216 /* ops->get_strings is valid because checked earlier */ 217 ops->get_strings(dev, stringset, data); 218 } 219 220 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) 221 { 222 /* feature masks of legacy discrete ethtool ops */ 223 224 switch (eth_cmd) { 225 case ETHTOOL_GTXCSUM: 226 case ETHTOOL_STXCSUM: 227 return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC | 228 NETIF_F_SCTP_CRC; 229 case ETHTOOL_GRXCSUM: 230 case ETHTOOL_SRXCSUM: 231 return NETIF_F_RXCSUM; 232 case ETHTOOL_GSG: 233 case ETHTOOL_SSG: 234 return NETIF_F_SG | NETIF_F_FRAGLIST; 235 case ETHTOOL_GTSO: 236 case ETHTOOL_STSO: 237 return NETIF_F_ALL_TSO; 238 case ETHTOOL_GGSO: 239 case ETHTOOL_SGSO: 240 return NETIF_F_GSO; 241 case ETHTOOL_GGRO: 242 case ETHTOOL_SGRO: 243 return NETIF_F_GRO; 244 default: 245 BUG(); 246 } 247 } 248 249 static int ethtool_get_one_feature(struct net_device *dev, 250 char __user *useraddr, u32 ethcmd) 251 { 252 netdev_features_t mask = ethtool_get_feature_mask(ethcmd); 253 struct ethtool_value edata = { 254 .cmd = ethcmd, 255 .data = !!(dev->features & mask), 256 }; 257 258 if (copy_to_user(useraddr, &edata, sizeof(edata))) 259 return -EFAULT; 260 return 0; 261 } 262 263 static int ethtool_set_one_feature(struct net_device *dev, 264 void __user *useraddr, u32 ethcmd) 265 { 266 struct ethtool_value edata; 267 netdev_features_t mask; 268 269 if (copy_from_user(&edata, useraddr, sizeof(edata))) 270 return -EFAULT; 271 272 mask = ethtool_get_feature_mask(ethcmd); 273 mask &= dev->hw_features; 274 if (!mask) 275 return -EOPNOTSUPP; 276 277 if (edata.data) 278 dev->wanted_features |= mask; 279 else 280 dev->wanted_features &= ~mask; 281 282 __netdev_update_features(dev); 283 284 return 0; 285 } 286 287 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ 288 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) 289 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ 290 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ 291 NETIF_F_RXHASH) 292 293 static u32 __ethtool_get_flags(struct net_device *dev) 294 { 295 u32 flags = 0; 296 297 if (dev->features & NETIF_F_LRO) 298 flags |= ETH_FLAG_LRO; 299 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 300 flags |= ETH_FLAG_RXVLAN; 301 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) 302 flags |= ETH_FLAG_TXVLAN; 303 if (dev->features & NETIF_F_NTUPLE) 304 flags |= ETH_FLAG_NTUPLE; 305 if (dev->features & NETIF_F_RXHASH) 306 flags |= ETH_FLAG_RXHASH; 307 308 return flags; 309 } 310 311 static int __ethtool_set_flags(struct net_device *dev, u32 data) 312 { 313 netdev_features_t features = 0, changed; 314 315 if (data & ~ETH_ALL_FLAGS) 316 return -EINVAL; 317 318 if (data & ETH_FLAG_LRO) 319 features |= NETIF_F_LRO; 320 if (data & ETH_FLAG_RXVLAN) 321 features |= NETIF_F_HW_VLAN_CTAG_RX; 322 if (data & ETH_FLAG_TXVLAN) 323 features |= NETIF_F_HW_VLAN_CTAG_TX; 324 if (data & ETH_FLAG_NTUPLE) 325 features |= NETIF_F_NTUPLE; 326 if (data & ETH_FLAG_RXHASH) 327 features |= NETIF_F_RXHASH; 328 329 /* allow changing only bits set in hw_features */ 330 changed = (features ^ dev->features) & ETH_ALL_FEATURES; 331 if (changed & ~dev->hw_features) 332 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; 333 334 dev->wanted_features = 335 (dev->wanted_features & ~changed) | (features & changed); 336 337 __netdev_update_features(dev); 338 339 return 0; 340 } 341 342 /* Given two link masks, AND them together and save the result in dst. */ 343 void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, 344 struct ethtool_link_ksettings *src) 345 { 346 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); 347 unsigned int idx = 0; 348 349 for (; idx < size; idx++) { 350 dst->link_modes.supported[idx] &= 351 src->link_modes.supported[idx]; 352 dst->link_modes.advertising[idx] &= 353 src->link_modes.advertising[idx]; 354 } 355 } 356 EXPORT_SYMBOL(ethtool_intersect_link_masks); 357 358 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, 359 u32 legacy_u32) 360 { 361 linkmode_zero(dst); 362 dst[0] = legacy_u32; 363 } 364 EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); 365 366 /* return false if src had higher bits set. lower bits always updated. */ 367 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, 368 const unsigned long *src) 369 { 370 *legacy_u32 = src[0]; 371 return find_next_bit(src, __ETHTOOL_LINK_MODE_MASK_NBITS, 32) == 372 __ETHTOOL_LINK_MODE_MASK_NBITS; 373 } 374 EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); 375 376 /* return false if ksettings link modes had higher bits 377 * set. legacy_settings always updated (best effort) 378 */ 379 static bool 380 convert_link_ksettings_to_legacy_settings( 381 struct ethtool_cmd *legacy_settings, 382 const struct ethtool_link_ksettings *link_ksettings) 383 { 384 bool retval = true; 385 386 memset(legacy_settings, 0, sizeof(*legacy_settings)); 387 /* this also clears the deprecated fields in legacy structure: 388 * __u8 transceiver; 389 * __u32 maxtxpkt; 390 * __u32 maxrxpkt; 391 */ 392 393 retval &= ethtool_convert_link_mode_to_legacy_u32( 394 &legacy_settings->supported, 395 link_ksettings->link_modes.supported); 396 retval &= ethtool_convert_link_mode_to_legacy_u32( 397 &legacy_settings->advertising, 398 link_ksettings->link_modes.advertising); 399 retval &= ethtool_convert_link_mode_to_legacy_u32( 400 &legacy_settings->lp_advertising, 401 link_ksettings->link_modes.lp_advertising); 402 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); 403 legacy_settings->duplex 404 = link_ksettings->base.duplex; 405 legacy_settings->port 406 = link_ksettings->base.port; 407 legacy_settings->phy_address 408 = link_ksettings->base.phy_address; 409 legacy_settings->autoneg 410 = link_ksettings->base.autoneg; 411 legacy_settings->mdio_support 412 = link_ksettings->base.mdio_support; 413 legacy_settings->eth_tp_mdix 414 = link_ksettings->base.eth_tp_mdix; 415 legacy_settings->eth_tp_mdix_ctrl 416 = link_ksettings->base.eth_tp_mdix_ctrl; 417 legacy_settings->transceiver 418 = link_ksettings->base.transceiver; 419 return retval; 420 } 421 422 /* number of 32-bit words to store the user's link mode bitmaps */ 423 #define __ETHTOOL_LINK_MODE_MASK_NU32 \ 424 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) 425 426 /* layout of the struct passed from/to userland */ 427 struct ethtool_link_usettings { 428 struct ethtool_link_settings base; 429 struct { 430 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; 431 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 432 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 433 } link_modes; 434 }; 435 436 /* Internal kernel helper to query a device ethtool_link_settings. */ 437 int __ethtool_get_link_ksettings(struct net_device *dev, 438 struct ethtool_link_ksettings *link_ksettings) 439 { 440 ASSERT_RTNL(); 441 442 if (!dev->ethtool_ops->get_link_ksettings) 443 return -EOPNOTSUPP; 444 445 if (!netif_device_present(dev)) 446 return -ENODEV; 447 448 memset(link_ksettings, 0, sizeof(*link_ksettings)); 449 return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings); 450 } 451 EXPORT_SYMBOL(__ethtool_get_link_ksettings); 452 453 /* convert ethtool_link_usettings in user space to a kernel internal 454 * ethtool_link_ksettings. return 0 on success, errno on error. 455 */ 456 static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, 457 const void __user *from) 458 { 459 struct ethtool_link_usettings link_usettings; 460 461 if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) 462 return -EFAULT; 463 464 memcpy(&to->base, &link_usettings.base, sizeof(to->base)); 465 bitmap_from_arr32(to->link_modes.supported, 466 link_usettings.link_modes.supported, 467 __ETHTOOL_LINK_MODE_MASK_NBITS); 468 bitmap_from_arr32(to->link_modes.advertising, 469 link_usettings.link_modes.advertising, 470 __ETHTOOL_LINK_MODE_MASK_NBITS); 471 bitmap_from_arr32(to->link_modes.lp_advertising, 472 link_usettings.link_modes.lp_advertising, 473 __ETHTOOL_LINK_MODE_MASK_NBITS); 474 475 return 0; 476 } 477 478 /* Check if the user is trying to change anything besides speed/duplex */ 479 bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd) 480 { 481 struct ethtool_link_settings base2 = {}; 482 483 base2.speed = cmd->base.speed; 484 base2.port = PORT_OTHER; 485 base2.duplex = cmd->base.duplex; 486 base2.cmd = cmd->base.cmd; 487 base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords; 488 489 return !memcmp(&base2, &cmd->base, sizeof(base2)) && 490 bitmap_empty(cmd->link_modes.supported, 491 __ETHTOOL_LINK_MODE_MASK_NBITS) && 492 bitmap_empty(cmd->link_modes.lp_advertising, 493 __ETHTOOL_LINK_MODE_MASK_NBITS); 494 } 495 496 /* convert a kernel internal ethtool_link_ksettings to 497 * ethtool_link_usettings in user space. return 0 on success, errno on 498 * error. 499 */ 500 static int 501 store_link_ksettings_for_user(void __user *to, 502 const struct ethtool_link_ksettings *from) 503 { 504 struct ethtool_link_usettings link_usettings; 505 506 memcpy(&link_usettings, from, sizeof(link_usettings)); 507 bitmap_to_arr32(link_usettings.link_modes.supported, 508 from->link_modes.supported, 509 __ETHTOOL_LINK_MODE_MASK_NBITS); 510 bitmap_to_arr32(link_usettings.link_modes.advertising, 511 from->link_modes.advertising, 512 __ETHTOOL_LINK_MODE_MASK_NBITS); 513 bitmap_to_arr32(link_usettings.link_modes.lp_advertising, 514 from->link_modes.lp_advertising, 515 __ETHTOOL_LINK_MODE_MASK_NBITS); 516 517 if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) 518 return -EFAULT; 519 520 return 0; 521 } 522 523 /* Query device for its ethtool_link_settings. */ 524 static int ethtool_get_link_ksettings(struct net_device *dev, 525 void __user *useraddr) 526 { 527 int err = 0; 528 struct ethtool_link_ksettings link_ksettings; 529 530 ASSERT_RTNL(); 531 if (!dev->ethtool_ops->get_link_ksettings) 532 return -EOPNOTSUPP; 533 534 /* handle bitmap nbits handshake */ 535 if (copy_from_user(&link_ksettings.base, useraddr, 536 sizeof(link_ksettings.base))) 537 return -EFAULT; 538 539 if (__ETHTOOL_LINK_MODE_MASK_NU32 540 != link_ksettings.base.link_mode_masks_nwords) { 541 /* wrong link mode nbits requested */ 542 memset(&link_ksettings, 0, sizeof(link_ksettings)); 543 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 544 /* send back number of words required as negative val */ 545 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, 546 "need too many bits for link modes!"); 547 link_ksettings.base.link_mode_masks_nwords 548 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); 549 550 /* copy the base fields back to user, not the link 551 * mode bitmaps 552 */ 553 if (copy_to_user(useraddr, &link_ksettings.base, 554 sizeof(link_ksettings.base))) 555 return -EFAULT; 556 557 return 0; 558 } 559 560 /* handshake successful: user/kernel agree on 561 * link_mode_masks_nwords 562 */ 563 564 memset(&link_ksettings, 0, sizeof(link_ksettings)); 565 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 566 if (err < 0) 567 return err; 568 569 /* make sure we tell the right values to user */ 570 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 571 link_ksettings.base.link_mode_masks_nwords 572 = __ETHTOOL_LINK_MODE_MASK_NU32; 573 link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED; 574 link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED; 575 link_ksettings.base.rate_matching = RATE_MATCH_NONE; 576 577 return store_link_ksettings_for_user(useraddr, &link_ksettings); 578 } 579 580 /* Update device ethtool_link_settings. */ 581 static int ethtool_set_link_ksettings(struct net_device *dev, 582 void __user *useraddr) 583 { 584 struct ethtool_link_ksettings link_ksettings = {}; 585 int err; 586 587 ASSERT_RTNL(); 588 589 if (!dev->ethtool_ops->set_link_ksettings) 590 return -EOPNOTSUPP; 591 592 /* make sure nbits field has expected value */ 593 if (copy_from_user(&link_ksettings.base, useraddr, 594 sizeof(link_ksettings.base))) 595 return -EFAULT; 596 597 if (__ETHTOOL_LINK_MODE_MASK_NU32 598 != link_ksettings.base.link_mode_masks_nwords) 599 return -EINVAL; 600 601 /* copy the whole structure, now that we know it has expected 602 * format 603 */ 604 err = load_link_ksettings_from_user(&link_ksettings, useraddr); 605 if (err) 606 return err; 607 608 /* re-check nwords field, just in case */ 609 if (__ETHTOOL_LINK_MODE_MASK_NU32 610 != link_ksettings.base.link_mode_masks_nwords) 611 return -EINVAL; 612 613 if (link_ksettings.base.master_slave_cfg || 614 link_ksettings.base.master_slave_state) 615 return -EINVAL; 616 617 err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 618 if (err >= 0) { 619 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); 620 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); 621 } 622 return err; 623 } 624 625 int ethtool_virtdev_set_link_ksettings(struct net_device *dev, 626 const struct ethtool_link_ksettings *cmd, 627 u32 *dev_speed, u8 *dev_duplex) 628 { 629 u32 speed; 630 u8 duplex; 631 632 speed = cmd->base.speed; 633 duplex = cmd->base.duplex; 634 /* don't allow custom speed and duplex */ 635 if (!ethtool_validate_speed(speed) || 636 !ethtool_validate_duplex(duplex) || 637 !ethtool_virtdev_validate_cmd(cmd)) 638 return -EINVAL; 639 *dev_speed = speed; 640 *dev_duplex = duplex; 641 642 return 0; 643 } 644 EXPORT_SYMBOL(ethtool_virtdev_set_link_ksettings); 645 646 /* Query device for its ethtool_cmd settings. 647 * 648 * Backward compatibility note: for compatibility with legacy ethtool, this is 649 * now implemented via get_link_ksettings. When driver reports higher link mode 650 * bits, a kernel warning is logged once (with name of 1st driver/device) to 651 * recommend user to upgrade ethtool, but the command is successful (only the 652 * lower link mode bits reported back to user). Deprecated fields from 653 * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero. 654 */ 655 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) 656 { 657 struct ethtool_link_ksettings link_ksettings; 658 struct ethtool_cmd cmd; 659 int err; 660 661 ASSERT_RTNL(); 662 if (!dev->ethtool_ops->get_link_ksettings) 663 return -EOPNOTSUPP; 664 665 if (dev->ethtool->module_fw_flash_in_progress) 666 return -EBUSY; 667 668 memset(&link_ksettings, 0, sizeof(link_ksettings)); 669 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 670 if (err < 0) 671 return err; 672 convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings); 673 674 /* send a sensible cmd tag back to user */ 675 cmd.cmd = ETHTOOL_GSET; 676 677 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 678 return -EFAULT; 679 680 return 0; 681 } 682 683 /* Update device link settings with given ethtool_cmd. 684 * 685 * Backward compatibility note: for compatibility with legacy ethtool, this is 686 * now always implemented via set_link_settings. When user's request updates 687 * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel 688 * warning is logged once (with name of 1st driver/device) to recommend user to 689 * upgrade ethtool, and the request is rejected. 690 */ 691 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) 692 { 693 struct ethtool_link_ksettings link_ksettings; 694 struct ethtool_cmd cmd; 695 int ret; 696 697 ASSERT_RTNL(); 698 699 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 700 return -EFAULT; 701 if (!dev->ethtool_ops->set_link_ksettings) 702 return -EOPNOTSUPP; 703 704 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd)) 705 return -EINVAL; 706 link_ksettings.base.link_mode_masks_nwords = 707 __ETHTOOL_LINK_MODE_MASK_NU32; 708 ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 709 if (ret >= 0) { 710 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); 711 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); 712 } 713 return ret; 714 } 715 716 static int 717 ethtool_get_drvinfo(struct net_device *dev, struct ethtool_devlink_compat *rsp) 718 { 719 const struct ethtool_ops *ops = dev->ethtool_ops; 720 struct device *parent = dev->dev.parent; 721 722 rsp->info.cmd = ETHTOOL_GDRVINFO; 723 strscpy(rsp->info.version, init_uts_ns.name.release, 724 sizeof(rsp->info.version)); 725 if (ops->get_drvinfo) { 726 ops->get_drvinfo(dev, &rsp->info); 727 if (!rsp->info.bus_info[0] && parent) 728 strscpy(rsp->info.bus_info, dev_name(parent), 729 sizeof(rsp->info.bus_info)); 730 if (!rsp->info.driver[0] && parent && parent->driver) 731 strscpy(rsp->info.driver, parent->driver->name, 732 sizeof(rsp->info.driver)); 733 } else if (parent && parent->driver) { 734 strscpy(rsp->info.bus_info, dev_name(parent), 735 sizeof(rsp->info.bus_info)); 736 strscpy(rsp->info.driver, parent->driver->name, 737 sizeof(rsp->info.driver)); 738 } else if (dev->rtnl_link_ops) { 739 strscpy(rsp->info.driver, dev->rtnl_link_ops->kind, 740 sizeof(rsp->info.driver)); 741 } else { 742 return -EOPNOTSUPP; 743 } 744 745 /* 746 * this method of obtaining string set info is deprecated; 747 * Use ETHTOOL_GSSET_INFO instead. 748 */ 749 if (ops->get_sset_count) { 750 int rc; 751 752 rc = ops->get_sset_count(dev, ETH_SS_TEST); 753 if (rc >= 0) 754 rsp->info.testinfo_len = rc; 755 rc = ops->get_sset_count(dev, ETH_SS_STATS); 756 if (rc >= 0) 757 rsp->info.n_stats = rc; 758 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); 759 if (rc >= 0) 760 rsp->info.n_priv_flags = rc; 761 } 762 if (ops->get_regs_len) { 763 int ret = ops->get_regs_len(dev); 764 765 if (ret > 0) 766 rsp->info.regdump_len = ret; 767 } 768 769 if (ops->get_eeprom_len) 770 rsp->info.eedump_len = ops->get_eeprom_len(dev); 771 772 if (!rsp->info.fw_version[0]) 773 rsp->devlink = netdev_to_devlink_get(dev); 774 775 return 0; 776 } 777 778 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, 779 void __user *useraddr) 780 { 781 struct ethtool_sset_info info; 782 u64 sset_mask; 783 int i, idx = 0, n_bits = 0, ret, rc; 784 u32 *info_buf = NULL; 785 786 if (copy_from_user(&info, useraddr, sizeof(info))) 787 return -EFAULT; 788 789 /* store copy of mask, because we zero struct later on */ 790 sset_mask = info.sset_mask; 791 if (!sset_mask) 792 return 0; 793 794 /* calculate size of return buffer */ 795 n_bits = hweight64(sset_mask); 796 797 memset(&info, 0, sizeof(info)); 798 info.cmd = ETHTOOL_GSSET_INFO; 799 800 info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER); 801 if (!info_buf) 802 return -ENOMEM; 803 804 /* 805 * fill return buffer based on input bitmask and successful 806 * get_sset_count return 807 */ 808 for (i = 0; i < 64; i++) { 809 if (!(sset_mask & (1ULL << i))) 810 continue; 811 812 rc = __ethtool_get_sset_count(dev, i); 813 if (rc >= 0) { 814 info.sset_mask |= (1ULL << i); 815 info_buf[idx++] = rc; 816 } 817 } 818 819 ret = -EFAULT; 820 if (copy_to_user(useraddr, &info, sizeof(info))) 821 goto out; 822 823 useraddr += offsetof(struct ethtool_sset_info, data); 824 if (copy_to_user(useraddr, info_buf, array_size(idx, sizeof(u32)))) 825 goto out; 826 827 ret = 0; 828 829 out: 830 kfree(info_buf); 831 return ret; 832 } 833 834 static noinline_for_stack int 835 ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc, 836 const struct compat_ethtool_rxnfc __user *useraddr, 837 size_t size) 838 { 839 struct compat_ethtool_rxnfc crxnfc = {}; 840 841 /* We expect there to be holes between fs.m_ext and 842 * fs.ring_cookie and at the end of fs, but nowhere else. 843 * On non-x86, no conversion should be needed. 844 */ 845 BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) && 846 sizeof(struct compat_ethtool_rxnfc) != 847 sizeof(struct ethtool_rxnfc)); 848 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) + 849 sizeof(useraddr->fs.m_ext) != 850 offsetof(struct ethtool_rxnfc, fs.m_ext) + 851 sizeof(rxnfc->fs.m_ext)); 852 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) - 853 offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) != 854 offsetof(struct ethtool_rxnfc, fs.location) - 855 offsetof(struct ethtool_rxnfc, fs.ring_cookie)); 856 857 if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc)))) 858 return -EFAULT; 859 860 *rxnfc = (struct ethtool_rxnfc) { 861 .cmd = crxnfc.cmd, 862 .flow_type = crxnfc.flow_type, 863 .data = crxnfc.data, 864 .fs = { 865 .flow_type = crxnfc.fs.flow_type, 866 .h_u = crxnfc.fs.h_u, 867 .h_ext = crxnfc.fs.h_ext, 868 .m_u = crxnfc.fs.m_u, 869 .m_ext = crxnfc.fs.m_ext, 870 .ring_cookie = crxnfc.fs.ring_cookie, 871 .location = crxnfc.fs.location, 872 }, 873 .rule_cnt = crxnfc.rule_cnt, 874 }; 875 876 return 0; 877 } 878 879 static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc, 880 const void __user *useraddr, 881 size_t size) 882 { 883 if (compat_need_64bit_alignment_fixup()) 884 return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size); 885 886 if (copy_from_user(rxnfc, useraddr, size)) 887 return -EFAULT; 888 889 return 0; 890 } 891 892 static int ethtool_rxnfc_copy_to_compat(void __user *useraddr, 893 const struct ethtool_rxnfc *rxnfc, 894 size_t size, const u32 *rule_buf) 895 { 896 struct compat_ethtool_rxnfc crxnfc; 897 898 memset(&crxnfc, 0, sizeof(crxnfc)); 899 crxnfc = (struct compat_ethtool_rxnfc) { 900 .cmd = rxnfc->cmd, 901 .flow_type = rxnfc->flow_type, 902 .data = rxnfc->data, 903 .fs = { 904 .flow_type = rxnfc->fs.flow_type, 905 .h_u = rxnfc->fs.h_u, 906 .h_ext = rxnfc->fs.h_ext, 907 .m_u = rxnfc->fs.m_u, 908 .m_ext = rxnfc->fs.m_ext, 909 .ring_cookie = rxnfc->fs.ring_cookie, 910 .location = rxnfc->fs.location, 911 }, 912 .rule_cnt = rxnfc->rule_cnt, 913 }; 914 915 if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc)))) 916 return -EFAULT; 917 918 return 0; 919 } 920 921 static int ethtool_rxnfc_copy_struct(u32 cmd, struct ethtool_rxnfc *info, 922 size_t *info_size, void __user *useraddr) 923 { 924 /* struct ethtool_rxnfc was originally defined for 925 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 926 * members. User-space might still be using that 927 * definition. 928 */ 929 if (cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) 930 *info_size = (offsetof(struct ethtool_rxnfc, data) + 931 sizeof(info->data)); 932 933 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) 934 return -EFAULT; 935 936 if ((cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) && info->flow_type & FLOW_RSS) { 937 *info_size = sizeof(*info); 938 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) 939 return -EFAULT; 940 /* Since malicious users may modify the original data, 941 * we need to check whether FLOW_RSS is still requested. 942 */ 943 if (!(info->flow_type & FLOW_RSS)) 944 return -EINVAL; 945 } 946 947 if (info->cmd != cmd) 948 return -EINVAL; 949 950 return 0; 951 } 952 953 static int ethtool_rxnfc_copy_to_user(void __user *useraddr, 954 const struct ethtool_rxnfc *rxnfc, 955 size_t size, const u32 *rule_buf) 956 { 957 int ret; 958 959 if (compat_need_64bit_alignment_fixup()) { 960 ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size, 961 rule_buf); 962 useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs); 963 } else { 964 ret = copy_to_user(useraddr, rxnfc, size); 965 useraddr += offsetof(struct ethtool_rxnfc, rule_locs); 966 } 967 968 if (ret) 969 return -EFAULT; 970 971 if (rule_buf) { 972 if (copy_to_user(useraddr, rule_buf, 973 rxnfc->rule_cnt * sizeof(u32))) 974 return -EFAULT; 975 } 976 977 return 0; 978 } 979 980 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, 981 u32 cmd, void __user *useraddr) 982 { 983 const struct ethtool_ops *ops = dev->ethtool_ops; 984 struct ethtool_rxnfc info; 985 size_t info_size = sizeof(info); 986 int rc; 987 988 if (!ops->set_rxnfc) 989 return -EOPNOTSUPP; 990 991 rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 992 if (rc) 993 return rc; 994 995 /* Nonzero ring with RSS only makes sense if NIC adds them together */ 996 if (info.flow_type & FLOW_RSS && !ops->cap_rss_rxnfc_adds && 997 ethtool_get_flow_spec_ring(info.fs.ring_cookie)) 998 return -EINVAL; 999 1000 if (ops->get_rxfh) { 1001 struct ethtool_rxfh_param rxfh = {}; 1002 1003 rc = ops->get_rxfh(dev, &rxfh); 1004 if (rc) 1005 return rc; 1006 1007 /* Sanity check: if symmetric-xor is set, then: 1008 * 1 - no other fields besides IP src/dst and/or L4 src/dst 1009 * 2 - If src is set, dst must also be set 1010 */ 1011 if ((rxfh.input_xfrm & RXH_XFRM_SYM_XOR) && 1012 ((info.data & ~(RXH_IP_SRC | RXH_IP_DST | 1013 RXH_L4_B_0_1 | RXH_L4_B_2_3)) || 1014 (!!(info.data & RXH_IP_SRC) ^ !!(info.data & RXH_IP_DST)) || 1015 (!!(info.data & RXH_L4_B_0_1) ^ !!(info.data & RXH_L4_B_2_3)))) 1016 return -EINVAL; 1017 } 1018 1019 rc = ops->set_rxnfc(dev, &info); 1020 if (rc) 1021 return rc; 1022 1023 if (cmd == ETHTOOL_SRXCLSRLINS && 1024 ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL)) 1025 return -EFAULT; 1026 1027 return 0; 1028 } 1029 1030 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, 1031 u32 cmd, void __user *useraddr) 1032 { 1033 struct ethtool_rxnfc info; 1034 size_t info_size = sizeof(info); 1035 const struct ethtool_ops *ops = dev->ethtool_ops; 1036 int ret; 1037 void *rule_buf = NULL; 1038 1039 if (!ops->get_rxnfc) 1040 return -EOPNOTSUPP; 1041 1042 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1043 if (ret) 1044 return ret; 1045 1046 if (info.cmd == ETHTOOL_GRXCLSRLALL) { 1047 if (info.rule_cnt > 0) { 1048 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) 1049 rule_buf = kcalloc(info.rule_cnt, sizeof(u32), 1050 GFP_USER); 1051 if (!rule_buf) 1052 return -ENOMEM; 1053 } 1054 } 1055 1056 ret = ops->get_rxnfc(dev, &info, rule_buf); 1057 if (ret < 0) 1058 goto err_out; 1059 1060 ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf); 1061 err_out: 1062 kfree(rule_buf); 1063 1064 return ret; 1065 } 1066 1067 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, 1068 struct ethtool_rxnfc *rx_rings, 1069 u32 size) 1070 { 1071 int i; 1072 1073 if (copy_from_user(indir, useraddr, array_size(size, sizeof(indir[0])))) 1074 return -EFAULT; 1075 1076 /* Validate ring indices */ 1077 for (i = 0; i < size; i++) 1078 if (indir[i] >= rx_rings->data) 1079 return -EINVAL; 1080 1081 return 0; 1082 } 1083 1084 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; 1085 1086 void netdev_rss_key_fill(void *buffer, size_t len) 1087 { 1088 BUG_ON(len > sizeof(netdev_rss_key)); 1089 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); 1090 memcpy(buffer, netdev_rss_key, len); 1091 } 1092 EXPORT_SYMBOL(netdev_rss_key_fill); 1093 1094 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, 1095 void __user *useraddr) 1096 { 1097 struct ethtool_rxfh_param rxfh = {}; 1098 u32 user_size; 1099 int ret; 1100 1101 if (!dev->ethtool_ops->get_rxfh_indir_size || 1102 !dev->ethtool_ops->get_rxfh) 1103 return -EOPNOTSUPP; 1104 rxfh.indir_size = dev->ethtool_ops->get_rxfh_indir_size(dev); 1105 if (rxfh.indir_size == 0) 1106 return -EOPNOTSUPP; 1107 1108 if (copy_from_user(&user_size, 1109 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1110 sizeof(user_size))) 1111 return -EFAULT; 1112 1113 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), 1114 &rxfh.indir_size, sizeof(rxfh.indir_size))) 1115 return -EFAULT; 1116 1117 /* If the user buffer size is 0, this is just a query for the 1118 * device table size. Otherwise, if it's smaller than the 1119 * device table size it's an error. 1120 */ 1121 if (user_size < rxfh.indir_size) 1122 return user_size == 0 ? 0 : -EINVAL; 1123 1124 rxfh.indir = kcalloc(rxfh.indir_size, sizeof(rxfh.indir[0]), GFP_USER); 1125 if (!rxfh.indir) 1126 return -ENOMEM; 1127 1128 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh); 1129 if (ret) 1130 goto out; 1131 if (copy_to_user(useraddr + 1132 offsetof(struct ethtool_rxfh_indir, ring_index[0]), 1133 rxfh.indir, rxfh.indir_size * sizeof(*rxfh.indir))) 1134 ret = -EFAULT; 1135 1136 out: 1137 kfree(rxfh.indir); 1138 return ret; 1139 } 1140 1141 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, 1142 void __user *useraddr) 1143 { 1144 const struct ethtool_ops *ops = dev->ethtool_ops; 1145 struct ethtool_rxfh_param rxfh_dev = {}; 1146 struct netlink_ext_ack *extack = NULL; 1147 struct ethtool_rxnfc rx_rings; 1148 u32 user_size, i; 1149 int ret; 1150 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); 1151 1152 if (!ops->get_rxfh_indir_size || !ops->set_rxfh || 1153 !ops->get_rxnfc) 1154 return -EOPNOTSUPP; 1155 1156 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1157 if (rxfh_dev.indir_size == 0) 1158 return -EOPNOTSUPP; 1159 1160 if (copy_from_user(&user_size, 1161 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1162 sizeof(user_size))) 1163 return -EFAULT; 1164 1165 if (user_size != 0 && user_size != rxfh_dev.indir_size) 1166 return -EINVAL; 1167 1168 rxfh_dev.indir = kcalloc(rxfh_dev.indir_size, 1169 sizeof(rxfh_dev.indir[0]), GFP_USER); 1170 if (!rxfh_dev.indir) 1171 return -ENOMEM; 1172 1173 rx_rings.cmd = ETHTOOL_GRXRINGS; 1174 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1175 if (ret) 1176 goto out; 1177 1178 if (user_size == 0) { 1179 u32 *indir = rxfh_dev.indir; 1180 1181 for (i = 0; i < rxfh_dev.indir_size; i++) 1182 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1183 } else { 1184 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1185 useraddr + ringidx_offset, 1186 &rx_rings, 1187 rxfh_dev.indir_size); 1188 if (ret) 1189 goto out; 1190 } 1191 1192 rxfh_dev.hfunc = ETH_RSS_HASH_NO_CHANGE; 1193 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1194 if (ret) 1195 goto out; 1196 1197 /* indicate whether rxfh was set to default */ 1198 if (user_size == 0) 1199 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1200 else 1201 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1202 1203 out: 1204 kfree(rxfh_dev.indir); 1205 return ret; 1206 } 1207 1208 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, 1209 void __user *useraddr) 1210 { 1211 const struct ethtool_ops *ops = dev->ethtool_ops; 1212 struct ethtool_rxfh_param rxfh_dev = {}; 1213 u32 user_indir_size, user_key_size; 1214 struct ethtool_rxfh_context *ctx; 1215 struct ethtool_rxfh rxfh; 1216 u32 indir_bytes; 1217 u8 *rss_config; 1218 u32 total_size; 1219 int ret; 1220 1221 if (!ops->get_rxfh) 1222 return -EOPNOTSUPP; 1223 1224 if (ops->get_rxfh_indir_size) 1225 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1226 if (ops->get_rxfh_key_size) 1227 rxfh_dev.key_size = ops->get_rxfh_key_size(dev); 1228 1229 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1230 return -EFAULT; 1231 user_indir_size = rxfh.indir_size; 1232 user_key_size = rxfh.key_size; 1233 1234 /* Check that reserved fields are 0 for now */ 1235 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1236 return -EINVAL; 1237 /* Most drivers don't handle rss_context, check it's 0 as well */ 1238 if (rxfh.rss_context && !(ops->cap_rss_ctx_supported || 1239 ops->create_rxfh_context)) 1240 return -EOPNOTSUPP; 1241 1242 rxfh.indir_size = rxfh_dev.indir_size; 1243 rxfh.key_size = rxfh_dev.key_size; 1244 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) 1245 return -EFAULT; 1246 1247 if ((user_indir_size && user_indir_size != rxfh_dev.indir_size) || 1248 (user_key_size && user_key_size != rxfh_dev.key_size)) 1249 return -EINVAL; 1250 1251 indir_bytes = user_indir_size * sizeof(rxfh_dev.indir[0]); 1252 total_size = indir_bytes + user_key_size; 1253 rss_config = kzalloc(total_size, GFP_USER); 1254 if (!rss_config) 1255 return -ENOMEM; 1256 1257 if (user_indir_size) 1258 rxfh_dev.indir = (u32 *)rss_config; 1259 1260 if (user_key_size) 1261 rxfh_dev.key = rss_config + indir_bytes; 1262 1263 if (rxfh.rss_context) { 1264 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1265 if (!ctx) { 1266 ret = -ENOENT; 1267 goto out; 1268 } 1269 if (rxfh_dev.indir) 1270 memcpy(rxfh_dev.indir, ethtool_rxfh_context_indir(ctx), 1271 indir_bytes); 1272 if (!ops->rxfh_per_ctx_key) { 1273 rxfh_dev.key_size = 0; 1274 } else { 1275 if (rxfh_dev.key) 1276 memcpy(rxfh_dev.key, 1277 ethtool_rxfh_context_key(ctx), 1278 user_key_size); 1279 rxfh_dev.hfunc = ctx->hfunc; 1280 } 1281 rxfh_dev.input_xfrm = ctx->input_xfrm; 1282 ret = 0; 1283 } else { 1284 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh_dev); 1285 if (ret) 1286 goto out; 1287 } 1288 1289 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), 1290 &rxfh_dev.hfunc, sizeof(rxfh.hfunc))) { 1291 ret = -EFAULT; 1292 } else if (copy_to_user(useraddr + 1293 offsetof(struct ethtool_rxfh, input_xfrm), 1294 &rxfh_dev.input_xfrm, 1295 sizeof(rxfh.input_xfrm))) { 1296 ret = -EFAULT; 1297 } else if (copy_to_user(useraddr + 1298 offsetof(struct ethtool_rxfh, key_size), 1299 &rxfh_dev.key_size, 1300 sizeof(rxfh.key_size))) { 1301 ret = -EFAULT; 1302 } else if (copy_to_user(useraddr + 1303 offsetof(struct ethtool_rxfh, rss_config[0]), 1304 rss_config, total_size)) { 1305 ret = -EFAULT; 1306 } 1307 out: 1308 kfree(rss_config); 1309 1310 return ret; 1311 } 1312 1313 static struct ethtool_rxfh_context * 1314 ethtool_rxfh_ctx_alloc(const struct ethtool_ops *ops, 1315 u32 indir_size, u32 key_size) 1316 { 1317 size_t indir_bytes, flex_len, key_off, size; 1318 struct ethtool_rxfh_context *ctx; 1319 u32 priv_bytes, indir_max; 1320 u16 key_max; 1321 1322 key_max = max(key_size, ops->rxfh_key_space); 1323 indir_max = max(indir_size, ops->rxfh_indir_space); 1324 1325 priv_bytes = ALIGN(ops->rxfh_priv_size, sizeof(u32)); 1326 indir_bytes = array_size(indir_max, sizeof(u32)); 1327 1328 key_off = size_add(priv_bytes, indir_bytes); 1329 flex_len = size_add(key_off, key_max); 1330 size = struct_size_t(struct ethtool_rxfh_context, data, flex_len); 1331 1332 ctx = kzalloc(size, GFP_KERNEL_ACCOUNT); 1333 if (!ctx) 1334 return NULL; 1335 1336 ctx->indir_size = indir_size; 1337 ctx->key_size = key_size; 1338 ctx->key_off = key_off; 1339 ctx->priv_size = ops->rxfh_priv_size; 1340 1341 ctx->hfunc = ETH_RSS_HASH_NO_CHANGE; 1342 ctx->input_xfrm = RXH_XFRM_NO_CHANGE; 1343 1344 return ctx; 1345 } 1346 1347 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, 1348 void __user *useraddr) 1349 { 1350 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); 1351 const struct ethtool_ops *ops = dev->ethtool_ops; 1352 u32 dev_indir_size = 0, dev_key_size = 0, i; 1353 u32 user_indir_len = 0, indir_bytes = 0; 1354 struct ethtool_rxfh_param rxfh_dev = {}; 1355 struct ethtool_rxfh_context *ctx = NULL; 1356 struct netlink_ext_ack *extack = NULL; 1357 struct ethtool_rxnfc rx_rings; 1358 struct ethtool_rxfh rxfh; 1359 bool locked = false; /* dev->ethtool->rss_lock taken */ 1360 bool create = false; 1361 u8 *rss_config; 1362 int ret; 1363 1364 if (!ops->get_rxnfc || !ops->set_rxfh) 1365 return -EOPNOTSUPP; 1366 1367 if (ops->get_rxfh_indir_size) 1368 dev_indir_size = ops->get_rxfh_indir_size(dev); 1369 if (ops->get_rxfh_key_size) 1370 dev_key_size = ops->get_rxfh_key_size(dev); 1371 1372 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1373 return -EFAULT; 1374 1375 /* Check that reserved fields are 0 for now */ 1376 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1377 return -EINVAL; 1378 /* Most drivers don't handle rss_context, check it's 0 as well */ 1379 if (rxfh.rss_context && !(ops->cap_rss_ctx_supported || 1380 ops->create_rxfh_context)) 1381 return -EOPNOTSUPP; 1382 /* Check input data transformation capabilities */ 1383 if (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_SYM_XOR && 1384 rxfh.input_xfrm != RXH_XFRM_NO_CHANGE) 1385 return -EINVAL; 1386 if (rxfh.input_xfrm != RXH_XFRM_NO_CHANGE && 1387 (rxfh.input_xfrm & RXH_XFRM_SYM_XOR) && 1388 !ops->cap_rss_sym_xor_supported) 1389 return -EOPNOTSUPP; 1390 create = rxfh.rss_context == ETH_RXFH_CONTEXT_ALLOC; 1391 1392 if ((rxfh.indir_size && 1393 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && 1394 rxfh.indir_size != dev_indir_size) || 1395 (rxfh.key_size && rxfh.key_size != dev_key_size)) 1396 return -EINVAL; 1397 1398 /* Must request at least one change: indir size, hash key, function 1399 * or input transformation. 1400 * There's no need for any of it in case of context creation. 1401 */ 1402 if (!create && 1403 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && 1404 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE && 1405 rxfh.input_xfrm == RXH_XFRM_NO_CHANGE)) 1406 return -EINVAL; 1407 1408 indir_bytes = dev_indir_size * sizeof(rxfh_dev.indir[0]); 1409 1410 /* Check settings which may be global rather than per RSS-context */ 1411 if (rxfh.rss_context && !ops->rxfh_per_ctx_key) 1412 if (rxfh.key_size || 1413 (rxfh.hfunc && rxfh.hfunc != ETH_RSS_HASH_NO_CHANGE) || 1414 (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_NO_CHANGE)) 1415 return -EOPNOTSUPP; 1416 1417 rss_config = kzalloc(indir_bytes + dev_key_size, GFP_USER); 1418 if (!rss_config) 1419 return -ENOMEM; 1420 1421 rx_rings.cmd = ETHTOOL_GRXRINGS; 1422 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1423 if (ret) 1424 goto out; 1425 1426 /* rxfh.indir_size == 0 means reset the indir table to default (master 1427 * context) or delete the context (other RSS contexts). 1428 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. 1429 */ 1430 if (rxfh.indir_size && 1431 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { 1432 user_indir_len = indir_bytes; 1433 rxfh_dev.indir = (u32 *)rss_config; 1434 rxfh_dev.indir_size = dev_indir_size; 1435 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1436 useraddr + rss_cfg_offset, 1437 &rx_rings, 1438 rxfh.indir_size); 1439 if (ret) 1440 goto out; 1441 } else if (rxfh.indir_size == 0) { 1442 if (rxfh.rss_context == 0) { 1443 u32 *indir; 1444 1445 rxfh_dev.indir = (u32 *)rss_config; 1446 rxfh_dev.indir_size = dev_indir_size; 1447 indir = rxfh_dev.indir; 1448 for (i = 0; i < dev_indir_size; i++) 1449 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1450 } else { 1451 rxfh_dev.rss_delete = true; 1452 } 1453 } 1454 1455 if (rxfh.key_size) { 1456 rxfh_dev.key_size = dev_key_size; 1457 rxfh_dev.key = rss_config + indir_bytes; 1458 if (copy_from_user(rxfh_dev.key, 1459 useraddr + rss_cfg_offset + user_indir_len, 1460 rxfh.key_size)) { 1461 ret = -EFAULT; 1462 goto out; 1463 } 1464 } 1465 1466 if (rxfh.rss_context) { 1467 mutex_lock(&dev->ethtool->rss_lock); 1468 locked = true; 1469 } 1470 1471 if (rxfh.rss_context && rxfh_dev.rss_delete) { 1472 ret = ethtool_check_rss_ctx_busy(dev, rxfh.rss_context); 1473 if (ret) 1474 goto out; 1475 } 1476 1477 if (create) { 1478 if (rxfh_dev.rss_delete) { 1479 ret = -EINVAL; 1480 goto out; 1481 } 1482 ctx = ethtool_rxfh_ctx_alloc(ops, dev_indir_size, dev_key_size); 1483 if (!ctx) { 1484 ret = -ENOMEM; 1485 goto out; 1486 } 1487 1488 if (ops->create_rxfh_context) { 1489 u32 limit = ops->rxfh_max_num_contexts ?: U32_MAX; 1490 u32 ctx_id; 1491 1492 /* driver uses new API, core allocates ID */ 1493 ret = xa_alloc(&dev->ethtool->rss_ctx, &ctx_id, ctx, 1494 XA_LIMIT(1, limit - 1), 1495 GFP_KERNEL_ACCOUNT); 1496 if (ret < 0) { 1497 kfree(ctx); 1498 goto out; 1499 } 1500 WARN_ON(!ctx_id); /* can't happen */ 1501 rxfh.rss_context = ctx_id; 1502 } 1503 } else if (rxfh.rss_context) { 1504 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1505 if (!ctx) { 1506 ret = -ENOENT; 1507 goto out; 1508 } 1509 } 1510 rxfh_dev.hfunc = rxfh.hfunc; 1511 rxfh_dev.rss_context = rxfh.rss_context; 1512 rxfh_dev.input_xfrm = rxfh.input_xfrm; 1513 1514 if (rxfh.rss_context && ops->create_rxfh_context) { 1515 if (create) { 1516 ret = ops->create_rxfh_context(dev, ctx, &rxfh_dev, 1517 extack); 1518 /* Make sure driver populates defaults */ 1519 WARN_ON_ONCE(!ret && !rxfh_dev.key && 1520 ops->rxfh_per_ctx_key && 1521 !memchr_inv(ethtool_rxfh_context_key(ctx), 1522 0, ctx->key_size)); 1523 } else if (rxfh_dev.rss_delete) { 1524 ret = ops->remove_rxfh_context(dev, ctx, 1525 rxfh.rss_context, 1526 extack); 1527 } else { 1528 ret = ops->modify_rxfh_context(dev, ctx, &rxfh_dev, 1529 extack); 1530 } 1531 } else { 1532 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1533 } 1534 if (ret) { 1535 if (create) { 1536 /* failed to create, free our new tracking entry */ 1537 if (ops->create_rxfh_context) 1538 xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context); 1539 kfree(ctx); 1540 } 1541 goto out; 1542 } 1543 1544 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), 1545 &rxfh_dev.rss_context, sizeof(rxfh_dev.rss_context))) 1546 ret = -EFAULT; 1547 1548 if (!rxfh_dev.rss_context) { 1549 /* indicate whether rxfh was set to default */ 1550 if (rxfh.indir_size == 0) 1551 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1552 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1553 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1554 } 1555 /* Update rss_ctx tracking */ 1556 if (create && !ops->create_rxfh_context) { 1557 /* driver uses old API, it chose context ID */ 1558 if (WARN_ON(xa_load(&dev->ethtool->rss_ctx, rxfh_dev.rss_context))) { 1559 /* context ID reused, our tracking is screwed */ 1560 kfree(ctx); 1561 goto out; 1562 } 1563 /* Allocate the exact ID the driver gave us */ 1564 if (xa_is_err(xa_store(&dev->ethtool->rss_ctx, rxfh_dev.rss_context, 1565 ctx, GFP_KERNEL))) { 1566 kfree(ctx); 1567 goto out; 1568 } 1569 1570 /* Fetch the defaults for the old API, in the new API drivers 1571 * should write defaults into ctx themselves. 1572 */ 1573 rxfh_dev.indir = (u32 *)rss_config; 1574 rxfh_dev.indir_size = dev_indir_size; 1575 1576 rxfh_dev.key = rss_config + indir_bytes; 1577 rxfh_dev.key_size = dev_key_size; 1578 1579 ret = ops->get_rxfh(dev, &rxfh_dev); 1580 if (WARN_ON(ret)) { 1581 xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context); 1582 kfree(ctx); 1583 goto out; 1584 } 1585 } 1586 if (rxfh_dev.rss_delete) { 1587 WARN_ON(xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context) != ctx); 1588 kfree(ctx); 1589 } else if (ctx) { 1590 if (rxfh_dev.indir) { 1591 for (i = 0; i < dev_indir_size; i++) 1592 ethtool_rxfh_context_indir(ctx)[i] = rxfh_dev.indir[i]; 1593 ctx->indir_configured = 1594 rxfh.indir_size && 1595 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE; 1596 } 1597 if (rxfh_dev.key) { 1598 memcpy(ethtool_rxfh_context_key(ctx), rxfh_dev.key, 1599 dev_key_size); 1600 ctx->key_configured = !!rxfh.key_size; 1601 } 1602 if (rxfh_dev.hfunc != ETH_RSS_HASH_NO_CHANGE) 1603 ctx->hfunc = rxfh_dev.hfunc; 1604 if (rxfh_dev.input_xfrm != RXH_XFRM_NO_CHANGE) 1605 ctx->input_xfrm = rxfh_dev.input_xfrm; 1606 } 1607 1608 out: 1609 if (locked) 1610 mutex_unlock(&dev->ethtool->rss_lock); 1611 kfree(rss_config); 1612 return ret; 1613 } 1614 1615 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) 1616 { 1617 struct ethtool_regs regs; 1618 const struct ethtool_ops *ops = dev->ethtool_ops; 1619 void *regbuf; 1620 int reglen, ret; 1621 1622 if (!ops->get_regs || !ops->get_regs_len) 1623 return -EOPNOTSUPP; 1624 1625 if (copy_from_user(®s, useraddr, sizeof(regs))) 1626 return -EFAULT; 1627 1628 reglen = ops->get_regs_len(dev); 1629 if (reglen <= 0) 1630 return reglen; 1631 1632 if (regs.len > reglen) 1633 regs.len = reglen; 1634 1635 regbuf = vzalloc(reglen); 1636 if (!regbuf) 1637 return -ENOMEM; 1638 1639 if (regs.len < reglen) 1640 reglen = regs.len; 1641 1642 ops->get_regs(dev, ®s, regbuf); 1643 1644 ret = -EFAULT; 1645 if (copy_to_user(useraddr, ®s, sizeof(regs))) 1646 goto out; 1647 useraddr += offsetof(struct ethtool_regs, data); 1648 if (copy_to_user(useraddr, regbuf, reglen)) 1649 goto out; 1650 ret = 0; 1651 1652 out: 1653 vfree(regbuf); 1654 return ret; 1655 } 1656 1657 static int ethtool_reset(struct net_device *dev, char __user *useraddr) 1658 { 1659 struct ethtool_value reset; 1660 int ret; 1661 1662 if (!dev->ethtool_ops->reset) 1663 return -EOPNOTSUPP; 1664 1665 if (dev->ethtool->module_fw_flash_in_progress) 1666 return -EBUSY; 1667 1668 if (copy_from_user(&reset, useraddr, sizeof(reset))) 1669 return -EFAULT; 1670 1671 ret = dev->ethtool_ops->reset(dev, &reset.data); 1672 if (ret) 1673 return ret; 1674 1675 if (copy_to_user(useraddr, &reset, sizeof(reset))) 1676 return -EFAULT; 1677 return 0; 1678 } 1679 1680 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) 1681 { 1682 struct ethtool_wolinfo wol; 1683 1684 if (!dev->ethtool_ops->get_wol) 1685 return -EOPNOTSUPP; 1686 1687 memset(&wol, 0, sizeof(struct ethtool_wolinfo)); 1688 wol.cmd = ETHTOOL_GWOL; 1689 dev->ethtool_ops->get_wol(dev, &wol); 1690 1691 if (copy_to_user(useraddr, &wol, sizeof(wol))) 1692 return -EFAULT; 1693 return 0; 1694 } 1695 1696 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) 1697 { 1698 struct ethtool_wolinfo wol, cur_wol; 1699 int ret; 1700 1701 if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol) 1702 return -EOPNOTSUPP; 1703 1704 memset(&cur_wol, 0, sizeof(struct ethtool_wolinfo)); 1705 cur_wol.cmd = ETHTOOL_GWOL; 1706 dev->ethtool_ops->get_wol(dev, &cur_wol); 1707 1708 if (copy_from_user(&wol, useraddr, sizeof(wol))) 1709 return -EFAULT; 1710 1711 if (wol.wolopts & ~cur_wol.supported) 1712 return -EINVAL; 1713 1714 if (wol.wolopts == cur_wol.wolopts && 1715 !memcmp(wol.sopass, cur_wol.sopass, sizeof(wol.sopass))) 1716 return 0; 1717 1718 ret = dev->ethtool_ops->set_wol(dev, &wol); 1719 if (ret) 1720 return ret; 1721 1722 dev->ethtool->wol_enabled = !!wol.wolopts; 1723 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL); 1724 1725 return 0; 1726 } 1727 1728 static void eee_to_keee(struct ethtool_keee *keee, 1729 const struct ethtool_eee *eee) 1730 { 1731 memset(keee, 0, sizeof(*keee)); 1732 1733 keee->eee_enabled = eee->eee_enabled; 1734 keee->tx_lpi_enabled = eee->tx_lpi_enabled; 1735 keee->tx_lpi_timer = eee->tx_lpi_timer; 1736 1737 ethtool_convert_legacy_u32_to_link_mode(keee->advertised, 1738 eee->advertised); 1739 } 1740 1741 static void keee_to_eee(struct ethtool_eee *eee, 1742 const struct ethtool_keee *keee) 1743 { 1744 bool overflow; 1745 1746 memset(eee, 0, sizeof(*eee)); 1747 1748 eee->eee_active = keee->eee_active; 1749 eee->eee_enabled = keee->eee_enabled; 1750 eee->tx_lpi_enabled = keee->tx_lpi_enabled; 1751 eee->tx_lpi_timer = keee->tx_lpi_timer; 1752 1753 overflow = !ethtool_convert_link_mode_to_legacy_u32(&eee->supported, 1754 keee->supported); 1755 ethtool_convert_link_mode_to_legacy_u32(&eee->advertised, 1756 keee->advertised); 1757 ethtool_convert_link_mode_to_legacy_u32(&eee->lp_advertised, 1758 keee->lp_advertised); 1759 if (overflow) 1760 pr_warn("Ethtool ioctl interface doesn't support passing EEE linkmodes beyond bit 32\n"); 1761 } 1762 1763 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) 1764 { 1765 struct ethtool_keee keee; 1766 struct ethtool_eee eee; 1767 int rc; 1768 1769 if (!dev->ethtool_ops->get_eee) 1770 return -EOPNOTSUPP; 1771 1772 memset(&keee, 0, sizeof(keee)); 1773 rc = dev->ethtool_ops->get_eee(dev, &keee); 1774 if (rc) 1775 return rc; 1776 1777 keee_to_eee(&eee, &keee); 1778 if (copy_to_user(useraddr, &eee, sizeof(eee))) 1779 return -EFAULT; 1780 1781 return 0; 1782 } 1783 1784 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) 1785 { 1786 struct ethtool_keee keee; 1787 struct ethtool_eee eee; 1788 int ret; 1789 1790 if (!dev->ethtool_ops->set_eee) 1791 return -EOPNOTSUPP; 1792 1793 if (copy_from_user(&eee, useraddr, sizeof(eee))) 1794 return -EFAULT; 1795 1796 eee_to_keee(&keee, &eee); 1797 ret = dev->ethtool_ops->set_eee(dev, &keee); 1798 if (!ret) 1799 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL); 1800 return ret; 1801 } 1802 1803 static int ethtool_nway_reset(struct net_device *dev) 1804 { 1805 if (!dev->ethtool_ops->nway_reset) 1806 return -EOPNOTSUPP; 1807 1808 return dev->ethtool_ops->nway_reset(dev); 1809 } 1810 1811 static int ethtool_get_link(struct net_device *dev, char __user *useraddr) 1812 { 1813 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; 1814 int link = __ethtool_get_link(dev); 1815 1816 if (link < 0) 1817 return link; 1818 1819 edata.data = link; 1820 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1821 return -EFAULT; 1822 return 0; 1823 } 1824 1825 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, 1826 int (*getter)(struct net_device *, 1827 struct ethtool_eeprom *, u8 *), 1828 u32 total_len) 1829 { 1830 struct ethtool_eeprom eeprom; 1831 void __user *userbuf = useraddr + sizeof(eeprom); 1832 u32 bytes_remaining; 1833 u8 *data; 1834 int ret = 0; 1835 1836 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1837 return -EFAULT; 1838 1839 /* Check for wrap and zero */ 1840 if (eeprom.offset + eeprom.len <= eeprom.offset) 1841 return -EINVAL; 1842 1843 /* Check for exceeding total eeprom len */ 1844 if (eeprom.offset + eeprom.len > total_len) 1845 return -EINVAL; 1846 1847 data = kzalloc(PAGE_SIZE, GFP_USER); 1848 if (!data) 1849 return -ENOMEM; 1850 1851 bytes_remaining = eeprom.len; 1852 while (bytes_remaining > 0) { 1853 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1854 1855 ret = getter(dev, &eeprom, data); 1856 if (ret) 1857 break; 1858 if (!eeprom.len) { 1859 ret = -EIO; 1860 break; 1861 } 1862 if (copy_to_user(userbuf, data, eeprom.len)) { 1863 ret = -EFAULT; 1864 break; 1865 } 1866 userbuf += eeprom.len; 1867 eeprom.offset += eeprom.len; 1868 bytes_remaining -= eeprom.len; 1869 } 1870 1871 eeprom.len = userbuf - (useraddr + sizeof(eeprom)); 1872 eeprom.offset -= eeprom.len; 1873 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) 1874 ret = -EFAULT; 1875 1876 kfree(data); 1877 return ret; 1878 } 1879 1880 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) 1881 { 1882 const struct ethtool_ops *ops = dev->ethtool_ops; 1883 1884 if (!ops->get_eeprom || !ops->get_eeprom_len || 1885 !ops->get_eeprom_len(dev)) 1886 return -EOPNOTSUPP; 1887 1888 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, 1889 ops->get_eeprom_len(dev)); 1890 } 1891 1892 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) 1893 { 1894 struct ethtool_eeprom eeprom; 1895 const struct ethtool_ops *ops = dev->ethtool_ops; 1896 void __user *userbuf = useraddr + sizeof(eeprom); 1897 u32 bytes_remaining; 1898 u8 *data; 1899 int ret = 0; 1900 1901 if (!ops->set_eeprom || !ops->get_eeprom_len || 1902 !ops->get_eeprom_len(dev)) 1903 return -EOPNOTSUPP; 1904 1905 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1906 return -EFAULT; 1907 1908 /* Check for wrap and zero */ 1909 if (eeprom.offset + eeprom.len <= eeprom.offset) 1910 return -EINVAL; 1911 1912 /* Check for exceeding total eeprom len */ 1913 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) 1914 return -EINVAL; 1915 1916 data = kzalloc(PAGE_SIZE, GFP_USER); 1917 if (!data) 1918 return -ENOMEM; 1919 1920 bytes_remaining = eeprom.len; 1921 while (bytes_remaining > 0) { 1922 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1923 1924 if (copy_from_user(data, userbuf, eeprom.len)) { 1925 ret = -EFAULT; 1926 break; 1927 } 1928 ret = ops->set_eeprom(dev, &eeprom, data); 1929 if (ret) 1930 break; 1931 userbuf += eeprom.len; 1932 eeprom.offset += eeprom.len; 1933 bytes_remaining -= eeprom.len; 1934 } 1935 1936 kfree(data); 1937 return ret; 1938 } 1939 1940 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, 1941 void __user *useraddr) 1942 { 1943 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 1944 struct kernel_ethtool_coalesce kernel_coalesce = {}; 1945 int ret; 1946 1947 if (!dev->ethtool_ops->get_coalesce) 1948 return -EOPNOTSUPP; 1949 1950 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 1951 NULL); 1952 if (ret) 1953 return ret; 1954 1955 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 1956 return -EFAULT; 1957 return 0; 1958 } 1959 1960 static bool 1961 ethtool_set_coalesce_supported(struct net_device *dev, 1962 struct ethtool_coalesce *coalesce) 1963 { 1964 u32 supported_params = dev->ethtool_ops->supported_coalesce_params; 1965 u32 nonzero_params = 0; 1966 1967 if (coalesce->rx_coalesce_usecs) 1968 nonzero_params |= ETHTOOL_COALESCE_RX_USECS; 1969 if (coalesce->rx_max_coalesced_frames) 1970 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; 1971 if (coalesce->rx_coalesce_usecs_irq) 1972 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; 1973 if (coalesce->rx_max_coalesced_frames_irq) 1974 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; 1975 if (coalesce->tx_coalesce_usecs) 1976 nonzero_params |= ETHTOOL_COALESCE_TX_USECS; 1977 if (coalesce->tx_max_coalesced_frames) 1978 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; 1979 if (coalesce->tx_coalesce_usecs_irq) 1980 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; 1981 if (coalesce->tx_max_coalesced_frames_irq) 1982 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; 1983 if (coalesce->stats_block_coalesce_usecs) 1984 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; 1985 if (coalesce->use_adaptive_rx_coalesce) 1986 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; 1987 if (coalesce->use_adaptive_tx_coalesce) 1988 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; 1989 if (coalesce->pkt_rate_low) 1990 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; 1991 if (coalesce->rx_coalesce_usecs_low) 1992 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; 1993 if (coalesce->rx_max_coalesced_frames_low) 1994 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; 1995 if (coalesce->tx_coalesce_usecs_low) 1996 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; 1997 if (coalesce->tx_max_coalesced_frames_low) 1998 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; 1999 if (coalesce->pkt_rate_high) 2000 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; 2001 if (coalesce->rx_coalesce_usecs_high) 2002 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; 2003 if (coalesce->rx_max_coalesced_frames_high) 2004 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; 2005 if (coalesce->tx_coalesce_usecs_high) 2006 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; 2007 if (coalesce->tx_max_coalesced_frames_high) 2008 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; 2009 if (coalesce->rate_sample_interval) 2010 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; 2011 2012 return (supported_params & nonzero_params) == nonzero_params; 2013 } 2014 2015 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, 2016 void __user *useraddr) 2017 { 2018 struct kernel_ethtool_coalesce kernel_coalesce = {}; 2019 struct ethtool_coalesce coalesce; 2020 int ret; 2021 2022 if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce) 2023 return -EOPNOTSUPP; 2024 2025 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 2026 NULL); 2027 if (ret) 2028 return ret; 2029 2030 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) 2031 return -EFAULT; 2032 2033 if (!ethtool_set_coalesce_supported(dev, &coalesce)) 2034 return -EOPNOTSUPP; 2035 2036 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, 2037 NULL); 2038 if (!ret) 2039 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL); 2040 return ret; 2041 } 2042 2043 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) 2044 { 2045 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; 2046 struct kernel_ethtool_ringparam kernel_ringparam = {}; 2047 2048 if (!dev->ethtool_ops->get_ringparam) 2049 return -EOPNOTSUPP; 2050 2051 dev->ethtool_ops->get_ringparam(dev, &ringparam, 2052 &kernel_ringparam, NULL); 2053 2054 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) 2055 return -EFAULT; 2056 return 0; 2057 } 2058 2059 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) 2060 { 2061 struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM }; 2062 struct kernel_ethtool_ringparam kernel_ringparam; 2063 int ret; 2064 2065 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) 2066 return -EOPNOTSUPP; 2067 2068 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) 2069 return -EFAULT; 2070 2071 dev->ethtool_ops->get_ringparam(dev, &max, &kernel_ringparam, NULL); 2072 2073 /* ensure new ring parameters are within the maximums */ 2074 if (ringparam.rx_pending > max.rx_max_pending || 2075 ringparam.rx_mini_pending > max.rx_mini_max_pending || 2076 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || 2077 ringparam.tx_pending > max.tx_max_pending) 2078 return -EINVAL; 2079 2080 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, 2081 &kernel_ringparam, NULL); 2082 if (!ret) 2083 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL); 2084 return ret; 2085 } 2086 2087 static noinline_for_stack int ethtool_get_channels(struct net_device *dev, 2088 void __user *useraddr) 2089 { 2090 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; 2091 2092 if (!dev->ethtool_ops->get_channels) 2093 return -EOPNOTSUPP; 2094 2095 dev->ethtool_ops->get_channels(dev, &channels); 2096 2097 if (copy_to_user(useraddr, &channels, sizeof(channels))) 2098 return -EFAULT; 2099 return 0; 2100 } 2101 2102 static noinline_for_stack int ethtool_set_channels(struct net_device *dev, 2103 void __user *useraddr) 2104 { 2105 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; 2106 u16 from_channel, to_channel; 2107 unsigned int i; 2108 int ret; 2109 2110 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) 2111 return -EOPNOTSUPP; 2112 2113 if (copy_from_user(&channels, useraddr, sizeof(channels))) 2114 return -EFAULT; 2115 2116 dev->ethtool_ops->get_channels(dev, &curr); 2117 2118 if (channels.rx_count == curr.rx_count && 2119 channels.tx_count == curr.tx_count && 2120 channels.combined_count == curr.combined_count && 2121 channels.other_count == curr.other_count) 2122 return 0; 2123 2124 /* ensure new counts are within the maximums */ 2125 if (channels.rx_count > curr.max_rx || 2126 channels.tx_count > curr.max_tx || 2127 channels.combined_count > curr.max_combined || 2128 channels.other_count > curr.max_other) 2129 return -EINVAL; 2130 2131 /* ensure there is at least one RX and one TX channel */ 2132 if (!channels.combined_count && 2133 (!channels.rx_count || !channels.tx_count)) 2134 return -EINVAL; 2135 2136 ret = ethtool_check_max_channel(dev, channels, NULL); 2137 if (ret) 2138 return ret; 2139 2140 /* Disabling channels, query zero-copy AF_XDP sockets */ 2141 from_channel = channels.combined_count + 2142 min(channels.rx_count, channels.tx_count); 2143 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); 2144 for (i = from_channel; i < to_channel; i++) 2145 if (xsk_get_pool_from_qid(dev, i)) 2146 return -EINVAL; 2147 2148 ret = dev->ethtool_ops->set_channels(dev, &channels); 2149 if (!ret) 2150 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL); 2151 return ret; 2152 } 2153 2154 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) 2155 { 2156 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; 2157 2158 if (!dev->ethtool_ops->get_pauseparam) 2159 return -EOPNOTSUPP; 2160 2161 dev->ethtool_ops->get_pauseparam(dev, &pauseparam); 2162 2163 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) 2164 return -EFAULT; 2165 return 0; 2166 } 2167 2168 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) 2169 { 2170 struct ethtool_pauseparam pauseparam; 2171 int ret; 2172 2173 if (!dev->ethtool_ops->set_pauseparam) 2174 return -EOPNOTSUPP; 2175 2176 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) 2177 return -EFAULT; 2178 2179 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); 2180 if (!ret) 2181 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL); 2182 return ret; 2183 } 2184 2185 static int ethtool_self_test(struct net_device *dev, char __user *useraddr) 2186 { 2187 struct ethtool_test test; 2188 const struct ethtool_ops *ops = dev->ethtool_ops; 2189 u64 *data; 2190 int ret, test_len; 2191 2192 if (!ops->self_test || !ops->get_sset_count) 2193 return -EOPNOTSUPP; 2194 2195 test_len = ops->get_sset_count(dev, ETH_SS_TEST); 2196 if (test_len < 0) 2197 return test_len; 2198 WARN_ON(test_len == 0); 2199 2200 if (copy_from_user(&test, useraddr, sizeof(test))) 2201 return -EFAULT; 2202 2203 test.len = test_len; 2204 data = kcalloc(test_len, sizeof(u64), GFP_USER); 2205 if (!data) 2206 return -ENOMEM; 2207 2208 netif_testing_on(dev); 2209 ops->self_test(dev, &test, data); 2210 netif_testing_off(dev); 2211 2212 ret = -EFAULT; 2213 if (copy_to_user(useraddr, &test, sizeof(test))) 2214 goto out; 2215 useraddr += sizeof(test); 2216 if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) 2217 goto out; 2218 ret = 0; 2219 2220 out: 2221 kfree(data); 2222 return ret; 2223 } 2224 2225 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) 2226 { 2227 struct ethtool_gstrings gstrings; 2228 u8 *data; 2229 int ret; 2230 2231 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) 2232 return -EFAULT; 2233 2234 ret = __ethtool_get_sset_count(dev, gstrings.string_set); 2235 if (ret < 0) 2236 return ret; 2237 if (ret > S32_MAX / ETH_GSTRING_LEN) 2238 return -ENOMEM; 2239 WARN_ON_ONCE(!ret); 2240 2241 gstrings.len = ret; 2242 2243 if (gstrings.len) { 2244 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); 2245 if (!data) 2246 return -ENOMEM; 2247 2248 __ethtool_get_strings(dev, gstrings.string_set, data); 2249 } else { 2250 data = NULL; 2251 } 2252 2253 ret = -EFAULT; 2254 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) 2255 goto out; 2256 useraddr += sizeof(gstrings); 2257 if (gstrings.len && 2258 copy_to_user(useraddr, data, 2259 array_size(gstrings.len, ETH_GSTRING_LEN))) 2260 goto out; 2261 ret = 0; 2262 2263 out: 2264 vfree(data); 2265 return ret; 2266 } 2267 2268 __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) 2269 { 2270 va_list args; 2271 2272 va_start(args, fmt); 2273 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); 2274 va_end(args); 2275 2276 *data += ETH_GSTRING_LEN; 2277 } 2278 EXPORT_SYMBOL(ethtool_sprintf); 2279 2280 void ethtool_puts(u8 **data, const char *str) 2281 { 2282 strscpy(*data, str, ETH_GSTRING_LEN); 2283 *data += ETH_GSTRING_LEN; 2284 } 2285 EXPORT_SYMBOL(ethtool_puts); 2286 2287 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) 2288 { 2289 struct ethtool_value id; 2290 static bool busy; 2291 const struct ethtool_ops *ops = dev->ethtool_ops; 2292 netdevice_tracker dev_tracker; 2293 int rc; 2294 2295 if (!ops->set_phys_id) 2296 return -EOPNOTSUPP; 2297 2298 if (busy) 2299 return -EBUSY; 2300 2301 if (copy_from_user(&id, useraddr, sizeof(id))) 2302 return -EFAULT; 2303 2304 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); 2305 if (rc < 0) 2306 return rc; 2307 2308 /* Drop the RTNL lock while waiting, but prevent reentry or 2309 * removal of the device. 2310 */ 2311 busy = true; 2312 netdev_hold(dev, &dev_tracker, GFP_KERNEL); 2313 rtnl_unlock(); 2314 2315 if (rc == 0) { 2316 /* Driver will handle this itself */ 2317 schedule_timeout_interruptible( 2318 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); 2319 } else { 2320 /* Driver expects to be called at twice the frequency in rc */ 2321 int n = rc * 2, interval = HZ / n; 2322 u64 count = mul_u32_u32(n, id.data); 2323 u64 i = 0; 2324 2325 do { 2326 rtnl_lock(); 2327 rc = ops->set_phys_id(dev, 2328 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); 2329 rtnl_unlock(); 2330 if (rc) 2331 break; 2332 schedule_timeout_interruptible(interval); 2333 } while (!signal_pending(current) && (!id.data || i < count)); 2334 } 2335 2336 rtnl_lock(); 2337 netdev_put(dev, &dev_tracker); 2338 busy = false; 2339 2340 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); 2341 return rc; 2342 } 2343 2344 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) 2345 { 2346 struct ethtool_stats stats; 2347 const struct ethtool_ops *ops = dev->ethtool_ops; 2348 u64 *data; 2349 int ret, n_stats; 2350 2351 if (!ops->get_ethtool_stats || !ops->get_sset_count) 2352 return -EOPNOTSUPP; 2353 2354 n_stats = ops->get_sset_count(dev, ETH_SS_STATS); 2355 if (n_stats < 0) 2356 return n_stats; 2357 if (n_stats > S32_MAX / sizeof(u64)) 2358 return -ENOMEM; 2359 WARN_ON_ONCE(!n_stats); 2360 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2361 return -EFAULT; 2362 2363 stats.n_stats = n_stats; 2364 2365 if (n_stats) { 2366 data = vzalloc(array_size(n_stats, sizeof(u64))); 2367 if (!data) 2368 return -ENOMEM; 2369 ops->get_ethtool_stats(dev, &stats, data); 2370 } else { 2371 data = NULL; 2372 } 2373 2374 ret = -EFAULT; 2375 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2376 goto out; 2377 useraddr += sizeof(stats); 2378 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) 2379 goto out; 2380 ret = 0; 2381 2382 out: 2383 vfree(data); 2384 return ret; 2385 } 2386 2387 static int ethtool_vzalloc_stats_array(int n_stats, u64 **data) 2388 { 2389 if (n_stats < 0) 2390 return n_stats; 2391 if (n_stats > S32_MAX / sizeof(u64)) 2392 return -ENOMEM; 2393 if (WARN_ON_ONCE(!n_stats)) 2394 return -EOPNOTSUPP; 2395 2396 *data = vzalloc(array_size(n_stats, sizeof(u64))); 2397 if (!*data) 2398 return -ENOMEM; 2399 2400 return 0; 2401 } 2402 2403 static int ethtool_get_phy_stats_phydev(struct phy_device *phydev, 2404 struct ethtool_stats *stats, 2405 u64 **data) 2406 { 2407 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 2408 int n_stats, ret; 2409 2410 if (!phy_ops || !phy_ops->get_sset_count || !phy_ops->get_stats) 2411 return -EOPNOTSUPP; 2412 2413 n_stats = phy_ops->get_sset_count(phydev); 2414 2415 ret = ethtool_vzalloc_stats_array(n_stats, data); 2416 if (ret) 2417 return ret; 2418 2419 stats->n_stats = n_stats; 2420 return phy_ops->get_stats(phydev, stats, *data); 2421 } 2422 2423 static int ethtool_get_phy_stats_ethtool(struct net_device *dev, 2424 struct ethtool_stats *stats, 2425 u64 **data) 2426 { 2427 const struct ethtool_ops *ops = dev->ethtool_ops; 2428 int n_stats, ret; 2429 2430 if (!ops || !ops->get_sset_count || !ops->get_ethtool_phy_stats) 2431 return -EOPNOTSUPP; 2432 2433 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); 2434 2435 ret = ethtool_vzalloc_stats_array(n_stats, data); 2436 if (ret) 2437 return ret; 2438 2439 stats->n_stats = n_stats; 2440 ops->get_ethtool_phy_stats(dev, stats, *data); 2441 2442 return 0; 2443 } 2444 2445 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) 2446 { 2447 struct phy_device *phydev = dev->phydev; 2448 struct ethtool_stats stats; 2449 u64 *data = NULL; 2450 int ret = -EOPNOTSUPP; 2451 2452 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2453 return -EFAULT; 2454 2455 if (phydev) 2456 ret = ethtool_get_phy_stats_phydev(phydev, &stats, &data); 2457 2458 if (ret == -EOPNOTSUPP) 2459 ret = ethtool_get_phy_stats_ethtool(dev, &stats, &data); 2460 2461 if (ret) 2462 goto out; 2463 2464 if (copy_to_user(useraddr, &stats, sizeof(stats))) { 2465 ret = -EFAULT; 2466 goto out; 2467 } 2468 2469 useraddr += sizeof(stats); 2470 if (copy_to_user(useraddr, data, array_size(stats.n_stats, sizeof(u64)))) 2471 ret = -EFAULT; 2472 2473 out: 2474 vfree(data); 2475 return ret; 2476 } 2477 2478 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) 2479 { 2480 struct ethtool_perm_addr epaddr; 2481 2482 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) 2483 return -EFAULT; 2484 2485 if (epaddr.size < dev->addr_len) 2486 return -ETOOSMALL; 2487 epaddr.size = dev->addr_len; 2488 2489 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) 2490 return -EFAULT; 2491 useraddr += sizeof(epaddr); 2492 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) 2493 return -EFAULT; 2494 return 0; 2495 } 2496 2497 static int ethtool_get_value(struct net_device *dev, char __user *useraddr, 2498 u32 cmd, u32 (*actor)(struct net_device *)) 2499 { 2500 struct ethtool_value edata = { .cmd = cmd }; 2501 2502 if (!actor) 2503 return -EOPNOTSUPP; 2504 2505 edata.data = actor(dev); 2506 2507 if (copy_to_user(useraddr, &edata, sizeof(edata))) 2508 return -EFAULT; 2509 return 0; 2510 } 2511 2512 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, 2513 void (*actor)(struct net_device *, u32)) 2514 { 2515 struct ethtool_value edata; 2516 2517 if (!actor) 2518 return -EOPNOTSUPP; 2519 2520 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2521 return -EFAULT; 2522 2523 actor(dev, edata.data); 2524 return 0; 2525 } 2526 2527 static int ethtool_set_value(struct net_device *dev, char __user *useraddr, 2528 int (*actor)(struct net_device *, u32)) 2529 { 2530 struct ethtool_value edata; 2531 2532 if (!actor) 2533 return -EOPNOTSUPP; 2534 2535 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2536 return -EFAULT; 2537 2538 return actor(dev, edata.data); 2539 } 2540 2541 static int 2542 ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) 2543 { 2544 if (!dev->ethtool_ops->flash_device) { 2545 req->devlink = netdev_to_devlink_get(dev); 2546 return 0; 2547 } 2548 2549 return dev->ethtool_ops->flash_device(dev, &req->efl); 2550 } 2551 2552 static int ethtool_set_dump(struct net_device *dev, 2553 void __user *useraddr) 2554 { 2555 struct ethtool_dump dump; 2556 2557 if (!dev->ethtool_ops->set_dump) 2558 return -EOPNOTSUPP; 2559 2560 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2561 return -EFAULT; 2562 2563 return dev->ethtool_ops->set_dump(dev, &dump); 2564 } 2565 2566 static int ethtool_get_dump_flag(struct net_device *dev, 2567 void __user *useraddr) 2568 { 2569 int ret; 2570 struct ethtool_dump dump; 2571 const struct ethtool_ops *ops = dev->ethtool_ops; 2572 2573 if (!ops->get_dump_flag) 2574 return -EOPNOTSUPP; 2575 2576 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2577 return -EFAULT; 2578 2579 ret = ops->get_dump_flag(dev, &dump); 2580 if (ret) 2581 return ret; 2582 2583 if (copy_to_user(useraddr, &dump, sizeof(dump))) 2584 return -EFAULT; 2585 return 0; 2586 } 2587 2588 static int ethtool_get_dump_data(struct net_device *dev, 2589 void __user *useraddr) 2590 { 2591 int ret; 2592 __u32 len; 2593 struct ethtool_dump dump, tmp; 2594 const struct ethtool_ops *ops = dev->ethtool_ops; 2595 void *data = NULL; 2596 2597 if (!ops->get_dump_data || !ops->get_dump_flag) 2598 return -EOPNOTSUPP; 2599 2600 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2601 return -EFAULT; 2602 2603 memset(&tmp, 0, sizeof(tmp)); 2604 tmp.cmd = ETHTOOL_GET_DUMP_FLAG; 2605 ret = ops->get_dump_flag(dev, &tmp); 2606 if (ret) 2607 return ret; 2608 2609 len = min(tmp.len, dump.len); 2610 if (!len) 2611 return -EFAULT; 2612 2613 /* Don't ever let the driver think there's more space available 2614 * than it requested with .get_dump_flag(). 2615 */ 2616 dump.len = len; 2617 2618 /* Always allocate enough space to hold the whole thing so that the 2619 * driver does not need to check the length and bother with partial 2620 * dumping. 2621 */ 2622 data = vzalloc(tmp.len); 2623 if (!data) 2624 return -ENOMEM; 2625 ret = ops->get_dump_data(dev, &dump, data); 2626 if (ret) 2627 goto out; 2628 2629 /* There are two sane possibilities: 2630 * 1. The driver's .get_dump_data() does not touch dump.len. 2631 * 2. Or it may set dump.len to how much it really writes, which 2632 * should be tmp.len (or len if it can do a partial dump). 2633 * In any case respond to userspace with the actual length of data 2634 * it's receiving. 2635 */ 2636 WARN_ON(dump.len != len && dump.len != tmp.len); 2637 dump.len = len; 2638 2639 if (copy_to_user(useraddr, &dump, sizeof(dump))) { 2640 ret = -EFAULT; 2641 goto out; 2642 } 2643 useraddr += offsetof(struct ethtool_dump, data); 2644 if (copy_to_user(useraddr, data, len)) 2645 ret = -EFAULT; 2646 out: 2647 vfree(data); 2648 return ret; 2649 } 2650 2651 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) 2652 { 2653 struct kernel_ethtool_ts_info kernel_info; 2654 struct ethtool_ts_info info = {}; 2655 int err; 2656 2657 err = __ethtool_get_ts_info(dev, &kernel_info); 2658 if (err) 2659 return err; 2660 2661 info.cmd = kernel_info.cmd; 2662 info.so_timestamping = kernel_info.so_timestamping; 2663 info.phc_index = kernel_info.phc_index; 2664 info.tx_types = kernel_info.tx_types; 2665 info.rx_filters = kernel_info.rx_filters; 2666 2667 if (copy_to_user(useraddr, &info, sizeof(info))) 2668 return -EFAULT; 2669 2670 return 0; 2671 } 2672 2673 int ethtool_get_module_info_call(struct net_device *dev, 2674 struct ethtool_modinfo *modinfo) 2675 { 2676 const struct ethtool_ops *ops = dev->ethtool_ops; 2677 struct phy_device *phydev = dev->phydev; 2678 2679 if (dev->ethtool->module_fw_flash_in_progress) 2680 return -EBUSY; 2681 2682 if (dev->sfp_bus) 2683 return sfp_get_module_info(dev->sfp_bus, modinfo); 2684 2685 if (phydev && phydev->drv && phydev->drv->module_info) 2686 return phydev->drv->module_info(phydev, modinfo); 2687 2688 if (ops->get_module_info) 2689 return ops->get_module_info(dev, modinfo); 2690 2691 return -EOPNOTSUPP; 2692 } 2693 2694 static int ethtool_get_module_info(struct net_device *dev, 2695 void __user *useraddr) 2696 { 2697 int ret; 2698 struct ethtool_modinfo modinfo; 2699 2700 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) 2701 return -EFAULT; 2702 2703 ret = ethtool_get_module_info_call(dev, &modinfo); 2704 if (ret) 2705 return ret; 2706 2707 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) 2708 return -EFAULT; 2709 2710 return 0; 2711 } 2712 2713 int ethtool_get_module_eeprom_call(struct net_device *dev, 2714 struct ethtool_eeprom *ee, u8 *data) 2715 { 2716 const struct ethtool_ops *ops = dev->ethtool_ops; 2717 struct phy_device *phydev = dev->phydev; 2718 2719 if (dev->ethtool->module_fw_flash_in_progress) 2720 return -EBUSY; 2721 2722 if (dev->sfp_bus) 2723 return sfp_get_module_eeprom(dev->sfp_bus, ee, data); 2724 2725 if (phydev && phydev->drv && phydev->drv->module_eeprom) 2726 return phydev->drv->module_eeprom(phydev, ee, data); 2727 2728 if (ops->get_module_eeprom) 2729 return ops->get_module_eeprom(dev, ee, data); 2730 2731 return -EOPNOTSUPP; 2732 } 2733 2734 static int ethtool_get_module_eeprom(struct net_device *dev, 2735 void __user *useraddr) 2736 { 2737 int ret; 2738 struct ethtool_modinfo modinfo; 2739 2740 ret = ethtool_get_module_info_call(dev, &modinfo); 2741 if (ret) 2742 return ret; 2743 2744 return ethtool_get_any_eeprom(dev, useraddr, 2745 ethtool_get_module_eeprom_call, 2746 modinfo.eeprom_len); 2747 } 2748 2749 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) 2750 { 2751 switch (tuna->id) { 2752 case ETHTOOL_RX_COPYBREAK: 2753 case ETHTOOL_TX_COPYBREAK: 2754 case ETHTOOL_TX_COPYBREAK_BUF_SIZE: 2755 if (tuna->len != sizeof(u32) || 2756 tuna->type_id != ETHTOOL_TUNABLE_U32) 2757 return -EINVAL; 2758 break; 2759 case ETHTOOL_PFC_PREVENTION_TOUT: 2760 if (tuna->len != sizeof(u16) || 2761 tuna->type_id != ETHTOOL_TUNABLE_U16) 2762 return -EINVAL; 2763 break; 2764 default: 2765 return -EINVAL; 2766 } 2767 2768 return 0; 2769 } 2770 2771 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) 2772 { 2773 int ret; 2774 struct ethtool_tunable tuna; 2775 const struct ethtool_ops *ops = dev->ethtool_ops; 2776 void *data; 2777 2778 if (!ops->get_tunable) 2779 return -EOPNOTSUPP; 2780 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2781 return -EFAULT; 2782 ret = ethtool_tunable_valid(&tuna); 2783 if (ret) 2784 return ret; 2785 data = kzalloc(tuna.len, GFP_USER); 2786 if (!data) 2787 return -ENOMEM; 2788 ret = ops->get_tunable(dev, &tuna, data); 2789 if (ret) 2790 goto out; 2791 useraddr += sizeof(tuna); 2792 ret = -EFAULT; 2793 if (copy_to_user(useraddr, data, tuna.len)) 2794 goto out; 2795 ret = 0; 2796 2797 out: 2798 kfree(data); 2799 return ret; 2800 } 2801 2802 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) 2803 { 2804 int ret; 2805 struct ethtool_tunable tuna; 2806 const struct ethtool_ops *ops = dev->ethtool_ops; 2807 void *data; 2808 2809 if (!ops->set_tunable) 2810 return -EOPNOTSUPP; 2811 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2812 return -EFAULT; 2813 ret = ethtool_tunable_valid(&tuna); 2814 if (ret) 2815 return ret; 2816 useraddr += sizeof(tuna); 2817 data = memdup_user(useraddr, tuna.len); 2818 if (IS_ERR(data)) 2819 return PTR_ERR(data); 2820 ret = ops->set_tunable(dev, &tuna, data); 2821 2822 kfree(data); 2823 return ret; 2824 } 2825 2826 static noinline_for_stack int 2827 ethtool_get_per_queue_coalesce(struct net_device *dev, 2828 void __user *useraddr, 2829 struct ethtool_per_queue_op *per_queue_opt) 2830 { 2831 u32 bit; 2832 int ret; 2833 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2834 2835 if (!dev->ethtool_ops->get_per_queue_coalesce) 2836 return -EOPNOTSUPP; 2837 2838 useraddr += sizeof(*per_queue_opt); 2839 2840 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, 2841 MAX_NUM_QUEUE); 2842 2843 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2844 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2845 2846 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); 2847 if (ret != 0) 2848 return ret; 2849 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2850 return -EFAULT; 2851 useraddr += sizeof(coalesce); 2852 } 2853 2854 return 0; 2855 } 2856 2857 static noinline_for_stack int 2858 ethtool_set_per_queue_coalesce(struct net_device *dev, 2859 void __user *useraddr, 2860 struct ethtool_per_queue_op *per_queue_opt) 2861 { 2862 u32 bit; 2863 int i, ret = 0; 2864 int n_queue; 2865 struct ethtool_coalesce *backup = NULL, *tmp = NULL; 2866 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2867 2868 if ((!dev->ethtool_ops->set_per_queue_coalesce) || 2869 (!dev->ethtool_ops->get_per_queue_coalesce)) 2870 return -EOPNOTSUPP; 2871 2872 useraddr += sizeof(*per_queue_opt); 2873 2874 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); 2875 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); 2876 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); 2877 if (!backup) 2878 return -ENOMEM; 2879 2880 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2881 struct ethtool_coalesce coalesce; 2882 2883 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); 2884 if (ret != 0) 2885 goto roll_back; 2886 2887 tmp++; 2888 2889 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { 2890 ret = -EFAULT; 2891 goto roll_back; 2892 } 2893 2894 if (!ethtool_set_coalesce_supported(dev, &coalesce)) { 2895 ret = -EOPNOTSUPP; 2896 goto roll_back; 2897 } 2898 2899 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); 2900 if (ret != 0) 2901 goto roll_back; 2902 2903 useraddr += sizeof(coalesce); 2904 } 2905 2906 roll_back: 2907 if (ret != 0) { 2908 tmp = backup; 2909 for_each_set_bit(i, queue_mask, bit) { 2910 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); 2911 tmp++; 2912 } 2913 } 2914 kfree(backup); 2915 2916 return ret; 2917 } 2918 2919 static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, 2920 void __user *useraddr, u32 sub_cmd) 2921 { 2922 struct ethtool_per_queue_op per_queue_opt; 2923 2924 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) 2925 return -EFAULT; 2926 2927 if (per_queue_opt.sub_command != sub_cmd) 2928 return -EINVAL; 2929 2930 switch (per_queue_opt.sub_command) { 2931 case ETHTOOL_GCOALESCE: 2932 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2933 case ETHTOOL_SCOALESCE: 2934 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2935 default: 2936 return -EOPNOTSUPP; 2937 } 2938 } 2939 2940 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) 2941 { 2942 switch (tuna->id) { 2943 case ETHTOOL_PHY_DOWNSHIFT: 2944 case ETHTOOL_PHY_FAST_LINK_DOWN: 2945 if (tuna->len != sizeof(u8) || 2946 tuna->type_id != ETHTOOL_TUNABLE_U8) 2947 return -EINVAL; 2948 break; 2949 case ETHTOOL_PHY_EDPD: 2950 if (tuna->len != sizeof(u16) || 2951 tuna->type_id != ETHTOOL_TUNABLE_U16) 2952 return -EINVAL; 2953 break; 2954 default: 2955 return -EINVAL; 2956 } 2957 2958 return 0; 2959 } 2960 2961 static int get_phy_tunable(struct net_device *dev, void __user *useraddr) 2962 { 2963 struct phy_device *phydev = dev->phydev; 2964 struct ethtool_tunable tuna; 2965 bool phy_drv_tunable; 2966 void *data; 2967 int ret; 2968 2969 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 2970 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) 2971 return -EOPNOTSUPP; 2972 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2973 return -EFAULT; 2974 ret = ethtool_phy_tunable_valid(&tuna); 2975 if (ret) 2976 return ret; 2977 data = kzalloc(tuna.len, GFP_USER); 2978 if (!data) 2979 return -ENOMEM; 2980 if (phy_drv_tunable) { 2981 mutex_lock(&phydev->lock); 2982 ret = phydev->drv->get_tunable(phydev, &tuna, data); 2983 mutex_unlock(&phydev->lock); 2984 } else { 2985 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); 2986 } 2987 if (ret) 2988 goto out; 2989 useraddr += sizeof(tuna); 2990 ret = -EFAULT; 2991 if (copy_to_user(useraddr, data, tuna.len)) 2992 goto out; 2993 ret = 0; 2994 2995 out: 2996 kfree(data); 2997 return ret; 2998 } 2999 3000 static int set_phy_tunable(struct net_device *dev, void __user *useraddr) 3001 { 3002 struct phy_device *phydev = dev->phydev; 3003 struct ethtool_tunable tuna; 3004 bool phy_drv_tunable; 3005 void *data; 3006 int ret; 3007 3008 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 3009 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) 3010 return -EOPNOTSUPP; 3011 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 3012 return -EFAULT; 3013 ret = ethtool_phy_tunable_valid(&tuna); 3014 if (ret) 3015 return ret; 3016 useraddr += sizeof(tuna); 3017 data = memdup_user(useraddr, tuna.len); 3018 if (IS_ERR(data)) 3019 return PTR_ERR(data); 3020 if (phy_drv_tunable) { 3021 mutex_lock(&phydev->lock); 3022 ret = phydev->drv->set_tunable(phydev, &tuna, data); 3023 mutex_unlock(&phydev->lock); 3024 } else { 3025 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); 3026 } 3027 3028 kfree(data); 3029 return ret; 3030 } 3031 3032 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) 3033 { 3034 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; 3035 int rc; 3036 3037 if (!dev->ethtool_ops->get_fecparam) 3038 return -EOPNOTSUPP; 3039 3040 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); 3041 if (rc) 3042 return rc; 3043 3044 if (WARN_ON_ONCE(fecparam.reserved)) 3045 fecparam.reserved = 0; 3046 3047 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) 3048 return -EFAULT; 3049 return 0; 3050 } 3051 3052 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) 3053 { 3054 struct ethtool_fecparam fecparam; 3055 3056 if (!dev->ethtool_ops->set_fecparam) 3057 return -EOPNOTSUPP; 3058 3059 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) 3060 return -EFAULT; 3061 3062 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) 3063 return -EINVAL; 3064 3065 fecparam.active_fec = 0; 3066 fecparam.reserved = 0; 3067 3068 return dev->ethtool_ops->set_fecparam(dev, &fecparam); 3069 } 3070 3071 /* The main entry point in this file. Called from net/core/dev_ioctl.c */ 3072 3073 static int 3074 __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, 3075 u32 ethcmd, struct ethtool_devlink_compat *devlink_state) 3076 { 3077 struct net_device *dev; 3078 u32 sub_cmd; 3079 int rc; 3080 netdev_features_t old_features; 3081 3082 dev = __dev_get_by_name(net, ifr->ifr_name); 3083 if (!dev) 3084 return -ENODEV; 3085 3086 if (ethcmd == ETHTOOL_PERQUEUE) { 3087 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) 3088 return -EFAULT; 3089 } else { 3090 sub_cmd = ethcmd; 3091 } 3092 /* Allow some commands to be done by anyone */ 3093 switch (sub_cmd) { 3094 case ETHTOOL_GSET: 3095 case ETHTOOL_GDRVINFO: 3096 case ETHTOOL_GMSGLVL: 3097 case ETHTOOL_GLINK: 3098 case ETHTOOL_GCOALESCE: 3099 case ETHTOOL_GRINGPARAM: 3100 case ETHTOOL_GPAUSEPARAM: 3101 case ETHTOOL_GRXCSUM: 3102 case ETHTOOL_GTXCSUM: 3103 case ETHTOOL_GSG: 3104 case ETHTOOL_GSSET_INFO: 3105 case ETHTOOL_GSTRINGS: 3106 case ETHTOOL_GSTATS: 3107 case ETHTOOL_GPHYSTATS: 3108 case ETHTOOL_GTSO: 3109 case ETHTOOL_GPERMADDR: 3110 case ETHTOOL_GUFO: 3111 case ETHTOOL_GGSO: 3112 case ETHTOOL_GGRO: 3113 case ETHTOOL_GFLAGS: 3114 case ETHTOOL_GPFLAGS: 3115 case ETHTOOL_GRXFH: 3116 case ETHTOOL_GRXRINGS: 3117 case ETHTOOL_GRXCLSRLCNT: 3118 case ETHTOOL_GRXCLSRULE: 3119 case ETHTOOL_GRXCLSRLALL: 3120 case ETHTOOL_GRXFHINDIR: 3121 case ETHTOOL_GRSSH: 3122 case ETHTOOL_GFEATURES: 3123 case ETHTOOL_GCHANNELS: 3124 case ETHTOOL_GET_TS_INFO: 3125 case ETHTOOL_GEEE: 3126 case ETHTOOL_GTUNABLE: 3127 case ETHTOOL_PHY_GTUNABLE: 3128 case ETHTOOL_GLINKSETTINGS: 3129 case ETHTOOL_GFECPARAM: 3130 break; 3131 default: 3132 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 3133 return -EPERM; 3134 } 3135 3136 if (dev->dev.parent) 3137 pm_runtime_get_sync(dev->dev.parent); 3138 3139 if (!netif_device_present(dev)) { 3140 rc = -ENODEV; 3141 goto out; 3142 } 3143 3144 if (dev->ethtool_ops->begin) { 3145 rc = dev->ethtool_ops->begin(dev); 3146 if (rc < 0) 3147 goto out; 3148 } 3149 old_features = dev->features; 3150 3151 switch (ethcmd) { 3152 case ETHTOOL_GSET: 3153 rc = ethtool_get_settings(dev, useraddr); 3154 break; 3155 case ETHTOOL_SSET: 3156 rc = ethtool_set_settings(dev, useraddr); 3157 break; 3158 case ETHTOOL_GDRVINFO: 3159 rc = ethtool_get_drvinfo(dev, devlink_state); 3160 break; 3161 case ETHTOOL_GREGS: 3162 rc = ethtool_get_regs(dev, useraddr); 3163 break; 3164 case ETHTOOL_GWOL: 3165 rc = ethtool_get_wol(dev, useraddr); 3166 break; 3167 case ETHTOOL_SWOL: 3168 rc = ethtool_set_wol(dev, useraddr); 3169 break; 3170 case ETHTOOL_GMSGLVL: 3171 rc = ethtool_get_value(dev, useraddr, ethcmd, 3172 dev->ethtool_ops->get_msglevel); 3173 break; 3174 case ETHTOOL_SMSGLVL: 3175 rc = ethtool_set_value_void(dev, useraddr, 3176 dev->ethtool_ops->set_msglevel); 3177 if (!rc) 3178 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL); 3179 break; 3180 case ETHTOOL_GEEE: 3181 rc = ethtool_get_eee(dev, useraddr); 3182 break; 3183 case ETHTOOL_SEEE: 3184 rc = ethtool_set_eee(dev, useraddr); 3185 break; 3186 case ETHTOOL_NWAY_RST: 3187 rc = ethtool_nway_reset(dev); 3188 break; 3189 case ETHTOOL_GLINK: 3190 rc = ethtool_get_link(dev, useraddr); 3191 break; 3192 case ETHTOOL_GEEPROM: 3193 rc = ethtool_get_eeprom(dev, useraddr); 3194 break; 3195 case ETHTOOL_SEEPROM: 3196 rc = ethtool_set_eeprom(dev, useraddr); 3197 break; 3198 case ETHTOOL_GCOALESCE: 3199 rc = ethtool_get_coalesce(dev, useraddr); 3200 break; 3201 case ETHTOOL_SCOALESCE: 3202 rc = ethtool_set_coalesce(dev, useraddr); 3203 break; 3204 case ETHTOOL_GRINGPARAM: 3205 rc = ethtool_get_ringparam(dev, useraddr); 3206 break; 3207 case ETHTOOL_SRINGPARAM: 3208 rc = ethtool_set_ringparam(dev, useraddr); 3209 break; 3210 case ETHTOOL_GPAUSEPARAM: 3211 rc = ethtool_get_pauseparam(dev, useraddr); 3212 break; 3213 case ETHTOOL_SPAUSEPARAM: 3214 rc = ethtool_set_pauseparam(dev, useraddr); 3215 break; 3216 case ETHTOOL_TEST: 3217 rc = ethtool_self_test(dev, useraddr); 3218 break; 3219 case ETHTOOL_GSTRINGS: 3220 rc = ethtool_get_strings(dev, useraddr); 3221 break; 3222 case ETHTOOL_PHYS_ID: 3223 rc = ethtool_phys_id(dev, useraddr); 3224 break; 3225 case ETHTOOL_GSTATS: 3226 rc = ethtool_get_stats(dev, useraddr); 3227 break; 3228 case ETHTOOL_GPERMADDR: 3229 rc = ethtool_get_perm_addr(dev, useraddr); 3230 break; 3231 case ETHTOOL_GFLAGS: 3232 rc = ethtool_get_value(dev, useraddr, ethcmd, 3233 __ethtool_get_flags); 3234 break; 3235 case ETHTOOL_SFLAGS: 3236 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); 3237 break; 3238 case ETHTOOL_GPFLAGS: 3239 rc = ethtool_get_value(dev, useraddr, ethcmd, 3240 dev->ethtool_ops->get_priv_flags); 3241 if (!rc) 3242 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL); 3243 break; 3244 case ETHTOOL_SPFLAGS: 3245 rc = ethtool_set_value(dev, useraddr, 3246 dev->ethtool_ops->set_priv_flags); 3247 break; 3248 case ETHTOOL_GRXFH: 3249 case ETHTOOL_GRXRINGS: 3250 case ETHTOOL_GRXCLSRLCNT: 3251 case ETHTOOL_GRXCLSRULE: 3252 case ETHTOOL_GRXCLSRLALL: 3253 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); 3254 break; 3255 case ETHTOOL_SRXFH: 3256 case ETHTOOL_SRXCLSRLDEL: 3257 case ETHTOOL_SRXCLSRLINS: 3258 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); 3259 break; 3260 case ETHTOOL_FLASHDEV: 3261 rc = ethtool_flash_device(dev, devlink_state); 3262 break; 3263 case ETHTOOL_RESET: 3264 rc = ethtool_reset(dev, useraddr); 3265 break; 3266 case ETHTOOL_GSSET_INFO: 3267 rc = ethtool_get_sset_info(dev, useraddr); 3268 break; 3269 case ETHTOOL_GRXFHINDIR: 3270 rc = ethtool_get_rxfh_indir(dev, useraddr); 3271 break; 3272 case ETHTOOL_SRXFHINDIR: 3273 rc = ethtool_set_rxfh_indir(dev, useraddr); 3274 break; 3275 case ETHTOOL_GRSSH: 3276 rc = ethtool_get_rxfh(dev, useraddr); 3277 break; 3278 case ETHTOOL_SRSSH: 3279 rc = ethtool_set_rxfh(dev, useraddr); 3280 break; 3281 case ETHTOOL_GFEATURES: 3282 rc = ethtool_get_features(dev, useraddr); 3283 break; 3284 case ETHTOOL_SFEATURES: 3285 rc = ethtool_set_features(dev, useraddr); 3286 break; 3287 case ETHTOOL_GTXCSUM: 3288 case ETHTOOL_GRXCSUM: 3289 case ETHTOOL_GSG: 3290 case ETHTOOL_GTSO: 3291 case ETHTOOL_GGSO: 3292 case ETHTOOL_GGRO: 3293 rc = ethtool_get_one_feature(dev, useraddr, ethcmd); 3294 break; 3295 case ETHTOOL_STXCSUM: 3296 case ETHTOOL_SRXCSUM: 3297 case ETHTOOL_SSG: 3298 case ETHTOOL_STSO: 3299 case ETHTOOL_SGSO: 3300 case ETHTOOL_SGRO: 3301 rc = ethtool_set_one_feature(dev, useraddr, ethcmd); 3302 break; 3303 case ETHTOOL_GCHANNELS: 3304 rc = ethtool_get_channels(dev, useraddr); 3305 break; 3306 case ETHTOOL_SCHANNELS: 3307 rc = ethtool_set_channels(dev, useraddr); 3308 break; 3309 case ETHTOOL_SET_DUMP: 3310 rc = ethtool_set_dump(dev, useraddr); 3311 break; 3312 case ETHTOOL_GET_DUMP_FLAG: 3313 rc = ethtool_get_dump_flag(dev, useraddr); 3314 break; 3315 case ETHTOOL_GET_DUMP_DATA: 3316 rc = ethtool_get_dump_data(dev, useraddr); 3317 break; 3318 case ETHTOOL_GET_TS_INFO: 3319 rc = ethtool_get_ts_info(dev, useraddr); 3320 break; 3321 case ETHTOOL_GMODULEINFO: 3322 rc = ethtool_get_module_info(dev, useraddr); 3323 break; 3324 case ETHTOOL_GMODULEEEPROM: 3325 rc = ethtool_get_module_eeprom(dev, useraddr); 3326 break; 3327 case ETHTOOL_GTUNABLE: 3328 rc = ethtool_get_tunable(dev, useraddr); 3329 break; 3330 case ETHTOOL_STUNABLE: 3331 rc = ethtool_set_tunable(dev, useraddr); 3332 break; 3333 case ETHTOOL_GPHYSTATS: 3334 rc = ethtool_get_phy_stats(dev, useraddr); 3335 break; 3336 case ETHTOOL_PERQUEUE: 3337 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); 3338 break; 3339 case ETHTOOL_GLINKSETTINGS: 3340 rc = ethtool_get_link_ksettings(dev, useraddr); 3341 break; 3342 case ETHTOOL_SLINKSETTINGS: 3343 rc = ethtool_set_link_ksettings(dev, useraddr); 3344 break; 3345 case ETHTOOL_PHY_GTUNABLE: 3346 rc = get_phy_tunable(dev, useraddr); 3347 break; 3348 case ETHTOOL_PHY_STUNABLE: 3349 rc = set_phy_tunable(dev, useraddr); 3350 break; 3351 case ETHTOOL_GFECPARAM: 3352 rc = ethtool_get_fecparam(dev, useraddr); 3353 break; 3354 case ETHTOOL_SFECPARAM: 3355 rc = ethtool_set_fecparam(dev, useraddr); 3356 break; 3357 default: 3358 rc = -EOPNOTSUPP; 3359 } 3360 3361 if (dev->ethtool_ops->complete) 3362 dev->ethtool_ops->complete(dev); 3363 3364 if (old_features != dev->features) 3365 netdev_features_change(dev); 3366 out: 3367 if (dev->dev.parent) 3368 pm_runtime_put(dev->dev.parent); 3369 3370 return rc; 3371 } 3372 3373 int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) 3374 { 3375 struct ethtool_devlink_compat *state; 3376 u32 ethcmd; 3377 int rc; 3378 3379 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) 3380 return -EFAULT; 3381 3382 state = kzalloc(sizeof(*state), GFP_KERNEL); 3383 if (!state) 3384 return -ENOMEM; 3385 3386 switch (ethcmd) { 3387 case ETHTOOL_FLASHDEV: 3388 if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { 3389 rc = -EFAULT; 3390 goto exit_free; 3391 } 3392 state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; 3393 break; 3394 } 3395 3396 rtnl_lock(); 3397 rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); 3398 rtnl_unlock(); 3399 if (rc) 3400 goto exit_free; 3401 3402 switch (ethcmd) { 3403 case ETHTOOL_FLASHDEV: 3404 if (state->devlink) 3405 rc = devlink_compat_flash_update(state->devlink, 3406 state->efl.data); 3407 break; 3408 case ETHTOOL_GDRVINFO: 3409 if (state->devlink) 3410 devlink_compat_running_version(state->devlink, 3411 state->info.fw_version, 3412 sizeof(state->info.fw_version)); 3413 if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { 3414 rc = -EFAULT; 3415 goto exit_free; 3416 } 3417 break; 3418 } 3419 3420 exit_free: 3421 if (state->devlink) 3422 devlink_put(state->devlink); 3423 kfree(state); 3424 return rc; 3425 } 3426 3427 struct ethtool_rx_flow_key { 3428 struct flow_dissector_key_basic basic; 3429 union { 3430 struct flow_dissector_key_ipv4_addrs ipv4; 3431 struct flow_dissector_key_ipv6_addrs ipv6; 3432 }; 3433 struct flow_dissector_key_ports tp; 3434 struct flow_dissector_key_ip ip; 3435 struct flow_dissector_key_vlan vlan; 3436 struct flow_dissector_key_eth_addrs eth_addrs; 3437 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ 3438 3439 struct ethtool_rx_flow_match { 3440 struct flow_dissector dissector; 3441 struct ethtool_rx_flow_key key; 3442 struct ethtool_rx_flow_key mask; 3443 }; 3444 3445 struct ethtool_rx_flow_rule * 3446 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) 3447 { 3448 const struct ethtool_rx_flow_spec *fs = input->fs; 3449 struct ethtool_rx_flow_match *match; 3450 struct ethtool_rx_flow_rule *flow; 3451 struct flow_action_entry *act; 3452 3453 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + 3454 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); 3455 if (!flow) 3456 return ERR_PTR(-ENOMEM); 3457 3458 /* ethtool_rx supports only one single action per rule. */ 3459 flow->rule = flow_rule_alloc(1); 3460 if (!flow->rule) { 3461 kfree(flow); 3462 return ERR_PTR(-ENOMEM); 3463 } 3464 3465 match = (struct ethtool_rx_flow_match *)flow->priv; 3466 flow->rule->match.dissector = &match->dissector; 3467 flow->rule->match.mask = &match->mask; 3468 flow->rule->match.key = &match->key; 3469 3470 match->mask.basic.n_proto = htons(0xffff); 3471 3472 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3473 case ETHER_FLOW: { 3474 const struct ethhdr *ether_spec, *ether_m_spec; 3475 3476 ether_spec = &fs->h_u.ether_spec; 3477 ether_m_spec = &fs->m_u.ether_spec; 3478 3479 if (!is_zero_ether_addr(ether_m_spec->h_source)) { 3480 ether_addr_copy(match->key.eth_addrs.src, 3481 ether_spec->h_source); 3482 ether_addr_copy(match->mask.eth_addrs.src, 3483 ether_m_spec->h_source); 3484 } 3485 if (!is_zero_ether_addr(ether_m_spec->h_dest)) { 3486 ether_addr_copy(match->key.eth_addrs.dst, 3487 ether_spec->h_dest); 3488 ether_addr_copy(match->mask.eth_addrs.dst, 3489 ether_m_spec->h_dest); 3490 } 3491 if (ether_m_spec->h_proto) { 3492 match->key.basic.n_proto = ether_spec->h_proto; 3493 match->mask.basic.n_proto = ether_m_spec->h_proto; 3494 } 3495 } 3496 break; 3497 case TCP_V4_FLOW: 3498 case UDP_V4_FLOW: { 3499 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; 3500 3501 match->key.basic.n_proto = htons(ETH_P_IP); 3502 3503 v4_spec = &fs->h_u.tcp_ip4_spec; 3504 v4_m_spec = &fs->m_u.tcp_ip4_spec; 3505 3506 if (v4_m_spec->ip4src) { 3507 match->key.ipv4.src = v4_spec->ip4src; 3508 match->mask.ipv4.src = v4_m_spec->ip4src; 3509 } 3510 if (v4_m_spec->ip4dst) { 3511 match->key.ipv4.dst = v4_spec->ip4dst; 3512 match->mask.ipv4.dst = v4_m_spec->ip4dst; 3513 } 3514 if (v4_m_spec->ip4src || 3515 v4_m_spec->ip4dst) { 3516 match->dissector.used_keys |= 3517 BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS); 3518 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = 3519 offsetof(struct ethtool_rx_flow_key, ipv4); 3520 } 3521 if (v4_m_spec->psrc) { 3522 match->key.tp.src = v4_spec->psrc; 3523 match->mask.tp.src = v4_m_spec->psrc; 3524 } 3525 if (v4_m_spec->pdst) { 3526 match->key.tp.dst = v4_spec->pdst; 3527 match->mask.tp.dst = v4_m_spec->pdst; 3528 } 3529 if (v4_m_spec->psrc || 3530 v4_m_spec->pdst) { 3531 match->dissector.used_keys |= 3532 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3533 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3534 offsetof(struct ethtool_rx_flow_key, tp); 3535 } 3536 if (v4_m_spec->tos) { 3537 match->key.ip.tos = v4_spec->tos; 3538 match->mask.ip.tos = v4_m_spec->tos; 3539 match->dissector.used_keys |= 3540 BIT(FLOW_DISSECTOR_KEY_IP); 3541 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3542 offsetof(struct ethtool_rx_flow_key, ip); 3543 } 3544 } 3545 break; 3546 case TCP_V6_FLOW: 3547 case UDP_V6_FLOW: { 3548 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; 3549 3550 match->key.basic.n_proto = htons(ETH_P_IPV6); 3551 3552 v6_spec = &fs->h_u.tcp_ip6_spec; 3553 v6_m_spec = &fs->m_u.tcp_ip6_spec; 3554 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) { 3555 memcpy(&match->key.ipv6.src, v6_spec->ip6src, 3556 sizeof(match->key.ipv6.src)); 3557 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, 3558 sizeof(match->mask.ipv6.src)); 3559 } 3560 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3561 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, 3562 sizeof(match->key.ipv6.dst)); 3563 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, 3564 sizeof(match->mask.ipv6.dst)); 3565 } 3566 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) || 3567 !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3568 match->dissector.used_keys |= 3569 BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS); 3570 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = 3571 offsetof(struct ethtool_rx_flow_key, ipv6); 3572 } 3573 if (v6_m_spec->psrc) { 3574 match->key.tp.src = v6_spec->psrc; 3575 match->mask.tp.src = v6_m_spec->psrc; 3576 } 3577 if (v6_m_spec->pdst) { 3578 match->key.tp.dst = v6_spec->pdst; 3579 match->mask.tp.dst = v6_m_spec->pdst; 3580 } 3581 if (v6_m_spec->psrc || 3582 v6_m_spec->pdst) { 3583 match->dissector.used_keys |= 3584 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3585 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3586 offsetof(struct ethtool_rx_flow_key, tp); 3587 } 3588 if (v6_m_spec->tclass) { 3589 match->key.ip.tos = v6_spec->tclass; 3590 match->mask.ip.tos = v6_m_spec->tclass; 3591 match->dissector.used_keys |= 3592 BIT_ULL(FLOW_DISSECTOR_KEY_IP); 3593 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3594 offsetof(struct ethtool_rx_flow_key, ip); 3595 } 3596 } 3597 break; 3598 default: 3599 ethtool_rx_flow_rule_destroy(flow); 3600 return ERR_PTR(-EINVAL); 3601 } 3602 3603 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3604 case TCP_V4_FLOW: 3605 case TCP_V6_FLOW: 3606 match->key.basic.ip_proto = IPPROTO_TCP; 3607 match->mask.basic.ip_proto = 0xff; 3608 break; 3609 case UDP_V4_FLOW: 3610 case UDP_V6_FLOW: 3611 match->key.basic.ip_proto = IPPROTO_UDP; 3612 match->mask.basic.ip_proto = 0xff; 3613 break; 3614 } 3615 3616 match->dissector.used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_BASIC); 3617 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = 3618 offsetof(struct ethtool_rx_flow_key, basic); 3619 3620 if (fs->flow_type & FLOW_EXT) { 3621 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3622 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3623 3624 if (ext_m_spec->vlan_etype) { 3625 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; 3626 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; 3627 } 3628 3629 if (ext_m_spec->vlan_tci) { 3630 match->key.vlan.vlan_id = 3631 ntohs(ext_h_spec->vlan_tci) & 0x0fff; 3632 match->mask.vlan.vlan_id = 3633 ntohs(ext_m_spec->vlan_tci) & 0x0fff; 3634 3635 match->key.vlan.vlan_dei = 3636 !!(ext_h_spec->vlan_tci & htons(0x1000)); 3637 match->mask.vlan.vlan_dei = 3638 !!(ext_m_spec->vlan_tci & htons(0x1000)); 3639 3640 match->key.vlan.vlan_priority = 3641 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; 3642 match->mask.vlan.vlan_priority = 3643 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; 3644 } 3645 3646 if (ext_m_spec->vlan_etype || 3647 ext_m_spec->vlan_tci) { 3648 match->dissector.used_keys |= 3649 BIT_ULL(FLOW_DISSECTOR_KEY_VLAN); 3650 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = 3651 offsetof(struct ethtool_rx_flow_key, vlan); 3652 } 3653 } 3654 if (fs->flow_type & FLOW_MAC_EXT) { 3655 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3656 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3657 3658 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, 3659 ETH_ALEN); 3660 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, 3661 ETH_ALEN); 3662 3663 match->dissector.used_keys |= 3664 BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS); 3665 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = 3666 offsetof(struct ethtool_rx_flow_key, eth_addrs); 3667 } 3668 3669 act = &flow->rule->action.entries[0]; 3670 switch (fs->ring_cookie) { 3671 case RX_CLS_FLOW_DISC: 3672 act->id = FLOW_ACTION_DROP; 3673 break; 3674 case RX_CLS_FLOW_WAKE: 3675 act->id = FLOW_ACTION_WAKE; 3676 break; 3677 default: 3678 act->id = FLOW_ACTION_QUEUE; 3679 if (fs->flow_type & FLOW_RSS) 3680 act->queue.ctx = input->rss_ctx; 3681 3682 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); 3683 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); 3684 break; 3685 } 3686 3687 return flow; 3688 } 3689 EXPORT_SYMBOL(ethtool_rx_flow_rule_create); 3690 3691 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) 3692 { 3693 kfree(flow->rule); 3694 kfree(flow); 3695 } 3696 EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); 3697