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 if (ops->get_rxfh) { 996 struct ethtool_rxfh_param rxfh = {}; 997 998 rc = ops->get_rxfh(dev, &rxfh); 999 if (rc) 1000 return rc; 1001 1002 /* Sanity check: if symmetric-xor is set, then: 1003 * 1 - no other fields besides IP src/dst and/or L4 src/dst 1004 * 2 - If src is set, dst must also be set 1005 */ 1006 if ((rxfh.input_xfrm & RXH_XFRM_SYM_XOR) && 1007 ((info.data & ~(RXH_IP_SRC | RXH_IP_DST | 1008 RXH_L4_B_0_1 | RXH_L4_B_2_3)) || 1009 (!!(info.data & RXH_IP_SRC) ^ !!(info.data & RXH_IP_DST)) || 1010 (!!(info.data & RXH_L4_B_0_1) ^ !!(info.data & RXH_L4_B_2_3)))) 1011 return -EINVAL; 1012 } 1013 1014 rc = ops->set_rxnfc(dev, &info); 1015 if (rc) 1016 return rc; 1017 1018 if (cmd == ETHTOOL_SRXCLSRLINS && 1019 ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL)) 1020 return -EFAULT; 1021 1022 return 0; 1023 } 1024 1025 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, 1026 u32 cmd, void __user *useraddr) 1027 { 1028 struct ethtool_rxnfc info; 1029 size_t info_size = sizeof(info); 1030 const struct ethtool_ops *ops = dev->ethtool_ops; 1031 int ret; 1032 void *rule_buf = NULL; 1033 1034 if (!ops->get_rxnfc) 1035 return -EOPNOTSUPP; 1036 1037 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1038 if (ret) 1039 return ret; 1040 1041 if (info.cmd == ETHTOOL_GRXCLSRLALL) { 1042 if (info.rule_cnt > 0) { 1043 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) 1044 rule_buf = kcalloc(info.rule_cnt, sizeof(u32), 1045 GFP_USER); 1046 if (!rule_buf) 1047 return -ENOMEM; 1048 } 1049 } 1050 1051 ret = ops->get_rxnfc(dev, &info, rule_buf); 1052 if (ret < 0) 1053 goto err_out; 1054 1055 ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf); 1056 err_out: 1057 kfree(rule_buf); 1058 1059 return ret; 1060 } 1061 1062 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, 1063 struct ethtool_rxnfc *rx_rings, 1064 u32 size) 1065 { 1066 int i; 1067 1068 if (copy_from_user(indir, useraddr, array_size(size, sizeof(indir[0])))) 1069 return -EFAULT; 1070 1071 /* Validate ring indices */ 1072 for (i = 0; i < size; i++) 1073 if (indir[i] >= rx_rings->data) 1074 return -EINVAL; 1075 1076 return 0; 1077 } 1078 1079 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; 1080 1081 void netdev_rss_key_fill(void *buffer, size_t len) 1082 { 1083 BUG_ON(len > sizeof(netdev_rss_key)); 1084 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); 1085 memcpy(buffer, netdev_rss_key, len); 1086 } 1087 EXPORT_SYMBOL(netdev_rss_key_fill); 1088 1089 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, 1090 void __user *useraddr) 1091 { 1092 struct ethtool_rxfh_param rxfh = {}; 1093 u32 user_size; 1094 int ret; 1095 1096 if (!dev->ethtool_ops->get_rxfh_indir_size || 1097 !dev->ethtool_ops->get_rxfh) 1098 return -EOPNOTSUPP; 1099 rxfh.indir_size = dev->ethtool_ops->get_rxfh_indir_size(dev); 1100 if (rxfh.indir_size == 0) 1101 return -EOPNOTSUPP; 1102 1103 if (copy_from_user(&user_size, 1104 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1105 sizeof(user_size))) 1106 return -EFAULT; 1107 1108 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), 1109 &rxfh.indir_size, sizeof(rxfh.indir_size))) 1110 return -EFAULT; 1111 1112 /* If the user buffer size is 0, this is just a query for the 1113 * device table size. Otherwise, if it's smaller than the 1114 * device table size it's an error. 1115 */ 1116 if (user_size < rxfh.indir_size) 1117 return user_size == 0 ? 0 : -EINVAL; 1118 1119 rxfh.indir = kcalloc(rxfh.indir_size, sizeof(rxfh.indir[0]), GFP_USER); 1120 if (!rxfh.indir) 1121 return -ENOMEM; 1122 1123 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh); 1124 if (ret) 1125 goto out; 1126 if (copy_to_user(useraddr + 1127 offsetof(struct ethtool_rxfh_indir, ring_index[0]), 1128 rxfh.indir, rxfh.indir_size * sizeof(*rxfh.indir))) 1129 ret = -EFAULT; 1130 1131 out: 1132 kfree(rxfh.indir); 1133 return ret; 1134 } 1135 1136 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, 1137 void __user *useraddr) 1138 { 1139 const struct ethtool_ops *ops = dev->ethtool_ops; 1140 struct ethtool_rxfh_param rxfh_dev = {}; 1141 struct netlink_ext_ack *extack = NULL; 1142 struct ethtool_rxnfc rx_rings; 1143 u32 user_size, i; 1144 int ret; 1145 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); 1146 1147 if (!ops->get_rxfh_indir_size || !ops->set_rxfh || 1148 !ops->get_rxnfc) 1149 return -EOPNOTSUPP; 1150 1151 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1152 if (rxfh_dev.indir_size == 0) 1153 return -EOPNOTSUPP; 1154 1155 if (copy_from_user(&user_size, 1156 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1157 sizeof(user_size))) 1158 return -EFAULT; 1159 1160 if (user_size != 0 && user_size != rxfh_dev.indir_size) 1161 return -EINVAL; 1162 1163 rxfh_dev.indir = kcalloc(rxfh_dev.indir_size, 1164 sizeof(rxfh_dev.indir[0]), GFP_USER); 1165 if (!rxfh_dev.indir) 1166 return -ENOMEM; 1167 1168 rx_rings.cmd = ETHTOOL_GRXRINGS; 1169 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1170 if (ret) 1171 goto out; 1172 1173 if (user_size == 0) { 1174 u32 *indir = rxfh_dev.indir; 1175 1176 for (i = 0; i < rxfh_dev.indir_size; i++) 1177 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1178 } else { 1179 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1180 useraddr + ringidx_offset, 1181 &rx_rings, 1182 rxfh_dev.indir_size); 1183 if (ret) 1184 goto out; 1185 } 1186 1187 rxfh_dev.hfunc = ETH_RSS_HASH_NO_CHANGE; 1188 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1189 if (ret) 1190 goto out; 1191 1192 /* indicate whether rxfh was set to default */ 1193 if (user_size == 0) 1194 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1195 else 1196 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1197 1198 out: 1199 kfree(rxfh_dev.indir); 1200 return ret; 1201 } 1202 1203 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, 1204 void __user *useraddr) 1205 { 1206 const struct ethtool_ops *ops = dev->ethtool_ops; 1207 struct ethtool_rxfh_param rxfh_dev = {}; 1208 u32 user_indir_size, user_key_size; 1209 struct ethtool_rxfh_context *ctx; 1210 struct ethtool_rxfh rxfh; 1211 u32 indir_bytes; 1212 u8 *rss_config; 1213 u32 total_size; 1214 int ret; 1215 1216 if (!ops->get_rxfh) 1217 return -EOPNOTSUPP; 1218 1219 if (ops->get_rxfh_indir_size) 1220 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1221 if (ops->get_rxfh_key_size) 1222 rxfh_dev.key_size = ops->get_rxfh_key_size(dev); 1223 1224 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1225 return -EFAULT; 1226 user_indir_size = rxfh.indir_size; 1227 user_key_size = rxfh.key_size; 1228 1229 /* Check that reserved fields are 0 for now */ 1230 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1231 return -EINVAL; 1232 /* Most drivers don't handle rss_context, check it's 0 as well */ 1233 if (rxfh.rss_context && !(ops->cap_rss_ctx_supported || 1234 ops->create_rxfh_context)) 1235 return -EOPNOTSUPP; 1236 1237 rxfh.indir_size = rxfh_dev.indir_size; 1238 rxfh.key_size = rxfh_dev.key_size; 1239 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) 1240 return -EFAULT; 1241 1242 if ((user_indir_size && user_indir_size != rxfh_dev.indir_size) || 1243 (user_key_size && user_key_size != rxfh_dev.key_size)) 1244 return -EINVAL; 1245 1246 indir_bytes = user_indir_size * sizeof(rxfh_dev.indir[0]); 1247 total_size = indir_bytes + user_key_size; 1248 rss_config = kzalloc(total_size, GFP_USER); 1249 if (!rss_config) 1250 return -ENOMEM; 1251 1252 if (user_indir_size) 1253 rxfh_dev.indir = (u32 *)rss_config; 1254 1255 if (user_key_size) 1256 rxfh_dev.key = rss_config + indir_bytes; 1257 1258 if (rxfh.rss_context) { 1259 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1260 if (!ctx) { 1261 ret = -ENOENT; 1262 goto out; 1263 } 1264 if (rxfh_dev.indir) 1265 memcpy(rxfh_dev.indir, ethtool_rxfh_context_indir(ctx), 1266 indir_bytes); 1267 if (!ops->rxfh_per_ctx_key) { 1268 rxfh_dev.key_size = 0; 1269 } else { 1270 if (rxfh_dev.key) 1271 memcpy(rxfh_dev.key, 1272 ethtool_rxfh_context_key(ctx), 1273 user_key_size); 1274 rxfh_dev.hfunc = ctx->hfunc; 1275 } 1276 rxfh_dev.input_xfrm = ctx->input_xfrm; 1277 ret = 0; 1278 } else { 1279 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh_dev); 1280 if (ret) 1281 goto out; 1282 } 1283 1284 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), 1285 &rxfh_dev.hfunc, sizeof(rxfh.hfunc))) { 1286 ret = -EFAULT; 1287 } else if (copy_to_user(useraddr + 1288 offsetof(struct ethtool_rxfh, input_xfrm), 1289 &rxfh_dev.input_xfrm, 1290 sizeof(rxfh.input_xfrm))) { 1291 ret = -EFAULT; 1292 } else if (copy_to_user(useraddr + 1293 offsetof(struct ethtool_rxfh, key_size), 1294 &rxfh_dev.key_size, 1295 sizeof(rxfh.key_size))) { 1296 ret = -EFAULT; 1297 } else if (copy_to_user(useraddr + 1298 offsetof(struct ethtool_rxfh, rss_config[0]), 1299 rss_config, total_size)) { 1300 ret = -EFAULT; 1301 } 1302 out: 1303 kfree(rss_config); 1304 1305 return ret; 1306 } 1307 1308 static struct ethtool_rxfh_context * 1309 ethtool_rxfh_ctx_alloc(const struct ethtool_ops *ops, 1310 u32 indir_size, u32 key_size) 1311 { 1312 size_t indir_bytes, flex_len, key_off, size; 1313 struct ethtool_rxfh_context *ctx; 1314 u32 priv_bytes, indir_max; 1315 u16 key_max; 1316 1317 key_max = max(key_size, ops->rxfh_key_space); 1318 indir_max = max(indir_size, ops->rxfh_indir_space); 1319 1320 priv_bytes = ALIGN(ops->rxfh_priv_size, sizeof(u32)); 1321 indir_bytes = array_size(indir_max, sizeof(u32)); 1322 1323 key_off = size_add(priv_bytes, indir_bytes); 1324 flex_len = size_add(key_off, key_max); 1325 size = struct_size_t(struct ethtool_rxfh_context, data, flex_len); 1326 1327 ctx = kzalloc(size, GFP_KERNEL_ACCOUNT); 1328 if (!ctx) 1329 return NULL; 1330 1331 ctx->indir_size = indir_size; 1332 ctx->key_size = key_size; 1333 ctx->key_off = key_off; 1334 ctx->priv_size = ops->rxfh_priv_size; 1335 1336 ctx->hfunc = ETH_RSS_HASH_NO_CHANGE; 1337 ctx->input_xfrm = RXH_XFRM_NO_CHANGE; 1338 1339 return ctx; 1340 } 1341 1342 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, 1343 void __user *useraddr) 1344 { 1345 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); 1346 const struct ethtool_ops *ops = dev->ethtool_ops; 1347 u32 dev_indir_size = 0, dev_key_size = 0, i; 1348 u32 user_indir_len = 0, indir_bytes = 0; 1349 struct ethtool_rxfh_param rxfh_dev = {}; 1350 struct ethtool_rxfh_context *ctx = NULL; 1351 struct netlink_ext_ack *extack = NULL; 1352 struct ethtool_rxnfc rx_rings; 1353 struct ethtool_rxfh rxfh; 1354 bool locked = false; /* dev->ethtool->rss_lock taken */ 1355 bool create = false; 1356 u8 *rss_config; 1357 int ret; 1358 1359 if (!ops->get_rxnfc || !ops->set_rxfh) 1360 return -EOPNOTSUPP; 1361 1362 if (ops->get_rxfh_indir_size) 1363 dev_indir_size = ops->get_rxfh_indir_size(dev); 1364 if (ops->get_rxfh_key_size) 1365 dev_key_size = ops->get_rxfh_key_size(dev); 1366 1367 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1368 return -EFAULT; 1369 1370 /* Check that reserved fields are 0 for now */ 1371 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1372 return -EINVAL; 1373 /* Most drivers don't handle rss_context, check it's 0 as well */ 1374 if (rxfh.rss_context && !(ops->cap_rss_ctx_supported || 1375 ops->create_rxfh_context)) 1376 return -EOPNOTSUPP; 1377 /* Check input data transformation capabilities */ 1378 if (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_SYM_XOR && 1379 rxfh.input_xfrm != RXH_XFRM_NO_CHANGE) 1380 return -EINVAL; 1381 if (rxfh.input_xfrm != RXH_XFRM_NO_CHANGE && 1382 (rxfh.input_xfrm & RXH_XFRM_SYM_XOR) && 1383 !ops->cap_rss_sym_xor_supported) 1384 return -EOPNOTSUPP; 1385 create = rxfh.rss_context == ETH_RXFH_CONTEXT_ALLOC; 1386 1387 if ((rxfh.indir_size && 1388 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && 1389 rxfh.indir_size != dev_indir_size) || 1390 (rxfh.key_size && rxfh.key_size != dev_key_size)) 1391 return -EINVAL; 1392 1393 /* Must request at least one change: indir size, hash key, function 1394 * or input transformation. 1395 * There's no need for any of it in case of context creation. 1396 */ 1397 if (!create && 1398 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && 1399 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE && 1400 rxfh.input_xfrm == RXH_XFRM_NO_CHANGE)) 1401 return -EINVAL; 1402 1403 indir_bytes = dev_indir_size * sizeof(rxfh_dev.indir[0]); 1404 1405 /* Check settings which may be global rather than per RSS-context */ 1406 if (rxfh.rss_context && !ops->rxfh_per_ctx_key) 1407 if (rxfh.key_size || 1408 (rxfh.hfunc && rxfh.hfunc != ETH_RSS_HASH_NO_CHANGE) || 1409 (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_NO_CHANGE)) 1410 return -EOPNOTSUPP; 1411 1412 rss_config = kzalloc(indir_bytes + dev_key_size, GFP_USER); 1413 if (!rss_config) 1414 return -ENOMEM; 1415 1416 rx_rings.cmd = ETHTOOL_GRXRINGS; 1417 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1418 if (ret) 1419 goto out; 1420 1421 /* rxfh.indir_size == 0 means reset the indir table to default (master 1422 * context) or delete the context (other RSS contexts). 1423 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. 1424 */ 1425 if (rxfh.indir_size && 1426 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { 1427 user_indir_len = indir_bytes; 1428 rxfh_dev.indir = (u32 *)rss_config; 1429 rxfh_dev.indir_size = dev_indir_size; 1430 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1431 useraddr + rss_cfg_offset, 1432 &rx_rings, 1433 rxfh.indir_size); 1434 if (ret) 1435 goto out; 1436 } else if (rxfh.indir_size == 0) { 1437 if (rxfh.rss_context == 0) { 1438 u32 *indir; 1439 1440 rxfh_dev.indir = (u32 *)rss_config; 1441 rxfh_dev.indir_size = dev_indir_size; 1442 indir = rxfh_dev.indir; 1443 for (i = 0; i < dev_indir_size; i++) 1444 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1445 } else { 1446 rxfh_dev.rss_delete = true; 1447 } 1448 } 1449 1450 if (rxfh.key_size) { 1451 rxfh_dev.key_size = dev_key_size; 1452 rxfh_dev.key = rss_config + indir_bytes; 1453 if (copy_from_user(rxfh_dev.key, 1454 useraddr + rss_cfg_offset + user_indir_len, 1455 rxfh.key_size)) { 1456 ret = -EFAULT; 1457 goto out; 1458 } 1459 } 1460 1461 if (rxfh.rss_context) { 1462 mutex_lock(&dev->ethtool->rss_lock); 1463 locked = true; 1464 } 1465 1466 if (rxfh.rss_context && rxfh_dev.rss_delete) { 1467 ret = ethtool_check_rss_ctx_busy(dev, rxfh.rss_context); 1468 if (ret) 1469 goto out; 1470 } 1471 1472 if (create) { 1473 if (rxfh_dev.rss_delete) { 1474 ret = -EINVAL; 1475 goto out; 1476 } 1477 ctx = ethtool_rxfh_ctx_alloc(ops, dev_indir_size, dev_key_size); 1478 if (!ctx) { 1479 ret = -ENOMEM; 1480 goto out; 1481 } 1482 1483 if (ops->create_rxfh_context) { 1484 u32 limit = ops->rxfh_max_num_contexts ?: U32_MAX; 1485 u32 ctx_id; 1486 1487 /* driver uses new API, core allocates ID */ 1488 ret = xa_alloc(&dev->ethtool->rss_ctx, &ctx_id, ctx, 1489 XA_LIMIT(1, limit - 1), 1490 GFP_KERNEL_ACCOUNT); 1491 if (ret < 0) { 1492 kfree(ctx); 1493 goto out; 1494 } 1495 WARN_ON(!ctx_id); /* can't happen */ 1496 rxfh.rss_context = ctx_id; 1497 } 1498 } else if (rxfh.rss_context) { 1499 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1500 if (!ctx) { 1501 ret = -ENOENT; 1502 goto out; 1503 } 1504 } 1505 rxfh_dev.hfunc = rxfh.hfunc; 1506 rxfh_dev.rss_context = rxfh.rss_context; 1507 rxfh_dev.input_xfrm = rxfh.input_xfrm; 1508 1509 if (rxfh.rss_context && ops->create_rxfh_context) { 1510 if (create) { 1511 ret = ops->create_rxfh_context(dev, ctx, &rxfh_dev, 1512 extack); 1513 /* Make sure driver populates defaults */ 1514 WARN_ON_ONCE(!ret && !rxfh_dev.key && 1515 ops->rxfh_per_ctx_key && 1516 !memchr_inv(ethtool_rxfh_context_key(ctx), 1517 0, ctx->key_size)); 1518 } else if (rxfh_dev.rss_delete) { 1519 ret = ops->remove_rxfh_context(dev, ctx, 1520 rxfh.rss_context, 1521 extack); 1522 } else { 1523 ret = ops->modify_rxfh_context(dev, ctx, &rxfh_dev, 1524 extack); 1525 } 1526 } else { 1527 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1528 } 1529 if (ret) { 1530 if (create) { 1531 /* failed to create, free our new tracking entry */ 1532 if (ops->create_rxfh_context) 1533 xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context); 1534 kfree(ctx); 1535 } 1536 goto out; 1537 } 1538 1539 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), 1540 &rxfh_dev.rss_context, sizeof(rxfh_dev.rss_context))) 1541 ret = -EFAULT; 1542 1543 if (!rxfh_dev.rss_context) { 1544 /* indicate whether rxfh was set to default */ 1545 if (rxfh.indir_size == 0) 1546 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1547 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1548 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1549 } 1550 /* Update rss_ctx tracking */ 1551 if (create && !ops->create_rxfh_context) { 1552 /* driver uses old API, it chose context ID */ 1553 if (WARN_ON(xa_load(&dev->ethtool->rss_ctx, rxfh_dev.rss_context))) { 1554 /* context ID reused, our tracking is screwed */ 1555 kfree(ctx); 1556 goto out; 1557 } 1558 /* Allocate the exact ID the driver gave us */ 1559 if (xa_is_err(xa_store(&dev->ethtool->rss_ctx, rxfh_dev.rss_context, 1560 ctx, GFP_KERNEL))) { 1561 kfree(ctx); 1562 goto out; 1563 } 1564 1565 /* Fetch the defaults for the old API, in the new API drivers 1566 * should write defaults into ctx themselves. 1567 */ 1568 rxfh_dev.indir = (u32 *)rss_config; 1569 rxfh_dev.indir_size = dev_indir_size; 1570 1571 rxfh_dev.key = rss_config + indir_bytes; 1572 rxfh_dev.key_size = dev_key_size; 1573 1574 ret = ops->get_rxfh(dev, &rxfh_dev); 1575 if (WARN_ON(ret)) { 1576 xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context); 1577 kfree(ctx); 1578 goto out; 1579 } 1580 } 1581 if (rxfh_dev.rss_delete) { 1582 WARN_ON(xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context) != ctx); 1583 kfree(ctx); 1584 } else if (ctx) { 1585 if (rxfh_dev.indir) { 1586 for (i = 0; i < dev_indir_size; i++) 1587 ethtool_rxfh_context_indir(ctx)[i] = rxfh_dev.indir[i]; 1588 ctx->indir_configured = 1589 rxfh.indir_size && 1590 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE; 1591 } 1592 if (rxfh_dev.key) { 1593 memcpy(ethtool_rxfh_context_key(ctx), rxfh_dev.key, 1594 dev_key_size); 1595 ctx->key_configured = !!rxfh.key_size; 1596 } 1597 if (rxfh_dev.hfunc != ETH_RSS_HASH_NO_CHANGE) 1598 ctx->hfunc = rxfh_dev.hfunc; 1599 if (rxfh_dev.input_xfrm != RXH_XFRM_NO_CHANGE) 1600 ctx->input_xfrm = rxfh_dev.input_xfrm; 1601 } 1602 1603 out: 1604 if (locked) 1605 mutex_unlock(&dev->ethtool->rss_lock); 1606 kfree(rss_config); 1607 return ret; 1608 } 1609 1610 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) 1611 { 1612 struct ethtool_regs regs; 1613 const struct ethtool_ops *ops = dev->ethtool_ops; 1614 void *regbuf; 1615 int reglen, ret; 1616 1617 if (!ops->get_regs || !ops->get_regs_len) 1618 return -EOPNOTSUPP; 1619 1620 if (copy_from_user(®s, useraddr, sizeof(regs))) 1621 return -EFAULT; 1622 1623 reglen = ops->get_regs_len(dev); 1624 if (reglen <= 0) 1625 return reglen; 1626 1627 if (regs.len > reglen) 1628 regs.len = reglen; 1629 1630 regbuf = vzalloc(reglen); 1631 if (!regbuf) 1632 return -ENOMEM; 1633 1634 if (regs.len < reglen) 1635 reglen = regs.len; 1636 1637 ops->get_regs(dev, ®s, regbuf); 1638 1639 ret = -EFAULT; 1640 if (copy_to_user(useraddr, ®s, sizeof(regs))) 1641 goto out; 1642 useraddr += offsetof(struct ethtool_regs, data); 1643 if (copy_to_user(useraddr, regbuf, reglen)) 1644 goto out; 1645 ret = 0; 1646 1647 out: 1648 vfree(regbuf); 1649 return ret; 1650 } 1651 1652 static int ethtool_reset(struct net_device *dev, char __user *useraddr) 1653 { 1654 struct ethtool_value reset; 1655 int ret; 1656 1657 if (!dev->ethtool_ops->reset) 1658 return -EOPNOTSUPP; 1659 1660 if (dev->ethtool->module_fw_flash_in_progress) 1661 return -EBUSY; 1662 1663 if (copy_from_user(&reset, useraddr, sizeof(reset))) 1664 return -EFAULT; 1665 1666 ret = dev->ethtool_ops->reset(dev, &reset.data); 1667 if (ret) 1668 return ret; 1669 1670 if (copy_to_user(useraddr, &reset, sizeof(reset))) 1671 return -EFAULT; 1672 return 0; 1673 } 1674 1675 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) 1676 { 1677 struct ethtool_wolinfo wol; 1678 1679 if (!dev->ethtool_ops->get_wol) 1680 return -EOPNOTSUPP; 1681 1682 memset(&wol, 0, sizeof(struct ethtool_wolinfo)); 1683 wol.cmd = ETHTOOL_GWOL; 1684 dev->ethtool_ops->get_wol(dev, &wol); 1685 1686 if (copy_to_user(useraddr, &wol, sizeof(wol))) 1687 return -EFAULT; 1688 return 0; 1689 } 1690 1691 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) 1692 { 1693 struct ethtool_wolinfo wol, cur_wol; 1694 int ret; 1695 1696 if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol) 1697 return -EOPNOTSUPP; 1698 1699 memset(&cur_wol, 0, sizeof(struct ethtool_wolinfo)); 1700 cur_wol.cmd = ETHTOOL_GWOL; 1701 dev->ethtool_ops->get_wol(dev, &cur_wol); 1702 1703 if (copy_from_user(&wol, useraddr, sizeof(wol))) 1704 return -EFAULT; 1705 1706 if (wol.wolopts & ~cur_wol.supported) 1707 return -EINVAL; 1708 1709 if (wol.wolopts == cur_wol.wolopts && 1710 !memcmp(wol.sopass, cur_wol.sopass, sizeof(wol.sopass))) 1711 return 0; 1712 1713 ret = dev->ethtool_ops->set_wol(dev, &wol); 1714 if (ret) 1715 return ret; 1716 1717 dev->ethtool->wol_enabled = !!wol.wolopts; 1718 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL); 1719 1720 return 0; 1721 } 1722 1723 static void eee_to_keee(struct ethtool_keee *keee, 1724 const struct ethtool_eee *eee) 1725 { 1726 memset(keee, 0, sizeof(*keee)); 1727 1728 keee->eee_enabled = eee->eee_enabled; 1729 keee->tx_lpi_enabled = eee->tx_lpi_enabled; 1730 keee->tx_lpi_timer = eee->tx_lpi_timer; 1731 1732 ethtool_convert_legacy_u32_to_link_mode(keee->advertised, 1733 eee->advertised); 1734 } 1735 1736 static void keee_to_eee(struct ethtool_eee *eee, 1737 const struct ethtool_keee *keee) 1738 { 1739 bool overflow; 1740 1741 memset(eee, 0, sizeof(*eee)); 1742 1743 eee->eee_active = keee->eee_active; 1744 eee->eee_enabled = keee->eee_enabled; 1745 eee->tx_lpi_enabled = keee->tx_lpi_enabled; 1746 eee->tx_lpi_timer = keee->tx_lpi_timer; 1747 1748 overflow = !ethtool_convert_link_mode_to_legacy_u32(&eee->supported, 1749 keee->supported); 1750 ethtool_convert_link_mode_to_legacy_u32(&eee->advertised, 1751 keee->advertised); 1752 ethtool_convert_link_mode_to_legacy_u32(&eee->lp_advertised, 1753 keee->lp_advertised); 1754 if (overflow) 1755 pr_warn("Ethtool ioctl interface doesn't support passing EEE linkmodes beyond bit 32\n"); 1756 } 1757 1758 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) 1759 { 1760 struct ethtool_keee keee; 1761 struct ethtool_eee eee; 1762 int rc; 1763 1764 if (!dev->ethtool_ops->get_eee) 1765 return -EOPNOTSUPP; 1766 1767 memset(&keee, 0, sizeof(keee)); 1768 rc = dev->ethtool_ops->get_eee(dev, &keee); 1769 if (rc) 1770 return rc; 1771 1772 keee_to_eee(&eee, &keee); 1773 if (copy_to_user(useraddr, &eee, sizeof(eee))) 1774 return -EFAULT; 1775 1776 return 0; 1777 } 1778 1779 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) 1780 { 1781 struct ethtool_keee keee; 1782 struct ethtool_eee eee; 1783 int ret; 1784 1785 if (!dev->ethtool_ops->set_eee) 1786 return -EOPNOTSUPP; 1787 1788 if (copy_from_user(&eee, useraddr, sizeof(eee))) 1789 return -EFAULT; 1790 1791 eee_to_keee(&keee, &eee); 1792 ret = dev->ethtool_ops->set_eee(dev, &keee); 1793 if (!ret) 1794 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL); 1795 return ret; 1796 } 1797 1798 static int ethtool_nway_reset(struct net_device *dev) 1799 { 1800 if (!dev->ethtool_ops->nway_reset) 1801 return -EOPNOTSUPP; 1802 1803 return dev->ethtool_ops->nway_reset(dev); 1804 } 1805 1806 static int ethtool_get_link(struct net_device *dev, char __user *useraddr) 1807 { 1808 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; 1809 int link = __ethtool_get_link(dev); 1810 1811 if (link < 0) 1812 return link; 1813 1814 edata.data = link; 1815 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1816 return -EFAULT; 1817 return 0; 1818 } 1819 1820 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, 1821 int (*getter)(struct net_device *, 1822 struct ethtool_eeprom *, u8 *), 1823 u32 total_len) 1824 { 1825 struct ethtool_eeprom eeprom; 1826 void __user *userbuf = useraddr + sizeof(eeprom); 1827 u32 bytes_remaining; 1828 u8 *data; 1829 int ret = 0; 1830 1831 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1832 return -EFAULT; 1833 1834 /* Check for wrap and zero */ 1835 if (eeprom.offset + eeprom.len <= eeprom.offset) 1836 return -EINVAL; 1837 1838 /* Check for exceeding total eeprom len */ 1839 if (eeprom.offset + eeprom.len > total_len) 1840 return -EINVAL; 1841 1842 data = kzalloc(PAGE_SIZE, GFP_USER); 1843 if (!data) 1844 return -ENOMEM; 1845 1846 bytes_remaining = eeprom.len; 1847 while (bytes_remaining > 0) { 1848 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1849 1850 ret = getter(dev, &eeprom, data); 1851 if (ret) 1852 break; 1853 if (!eeprom.len) { 1854 ret = -EIO; 1855 break; 1856 } 1857 if (copy_to_user(userbuf, data, eeprom.len)) { 1858 ret = -EFAULT; 1859 break; 1860 } 1861 userbuf += eeprom.len; 1862 eeprom.offset += eeprom.len; 1863 bytes_remaining -= eeprom.len; 1864 } 1865 1866 eeprom.len = userbuf - (useraddr + sizeof(eeprom)); 1867 eeprom.offset -= eeprom.len; 1868 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) 1869 ret = -EFAULT; 1870 1871 kfree(data); 1872 return ret; 1873 } 1874 1875 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) 1876 { 1877 const struct ethtool_ops *ops = dev->ethtool_ops; 1878 1879 if (!ops->get_eeprom || !ops->get_eeprom_len || 1880 !ops->get_eeprom_len(dev)) 1881 return -EOPNOTSUPP; 1882 1883 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, 1884 ops->get_eeprom_len(dev)); 1885 } 1886 1887 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) 1888 { 1889 struct ethtool_eeprom eeprom; 1890 const struct ethtool_ops *ops = dev->ethtool_ops; 1891 void __user *userbuf = useraddr + sizeof(eeprom); 1892 u32 bytes_remaining; 1893 u8 *data; 1894 int ret = 0; 1895 1896 if (!ops->set_eeprom || !ops->get_eeprom_len || 1897 !ops->get_eeprom_len(dev)) 1898 return -EOPNOTSUPP; 1899 1900 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1901 return -EFAULT; 1902 1903 /* Check for wrap and zero */ 1904 if (eeprom.offset + eeprom.len <= eeprom.offset) 1905 return -EINVAL; 1906 1907 /* Check for exceeding total eeprom len */ 1908 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) 1909 return -EINVAL; 1910 1911 data = kzalloc(PAGE_SIZE, GFP_USER); 1912 if (!data) 1913 return -ENOMEM; 1914 1915 bytes_remaining = eeprom.len; 1916 while (bytes_remaining > 0) { 1917 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1918 1919 if (copy_from_user(data, userbuf, eeprom.len)) { 1920 ret = -EFAULT; 1921 break; 1922 } 1923 ret = ops->set_eeprom(dev, &eeprom, data); 1924 if (ret) 1925 break; 1926 userbuf += eeprom.len; 1927 eeprom.offset += eeprom.len; 1928 bytes_remaining -= eeprom.len; 1929 } 1930 1931 kfree(data); 1932 return ret; 1933 } 1934 1935 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, 1936 void __user *useraddr) 1937 { 1938 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 1939 struct kernel_ethtool_coalesce kernel_coalesce = {}; 1940 int ret; 1941 1942 if (!dev->ethtool_ops->get_coalesce) 1943 return -EOPNOTSUPP; 1944 1945 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 1946 NULL); 1947 if (ret) 1948 return ret; 1949 1950 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 1951 return -EFAULT; 1952 return 0; 1953 } 1954 1955 static bool 1956 ethtool_set_coalesce_supported(struct net_device *dev, 1957 struct ethtool_coalesce *coalesce) 1958 { 1959 u32 supported_params = dev->ethtool_ops->supported_coalesce_params; 1960 u32 nonzero_params = 0; 1961 1962 if (coalesce->rx_coalesce_usecs) 1963 nonzero_params |= ETHTOOL_COALESCE_RX_USECS; 1964 if (coalesce->rx_max_coalesced_frames) 1965 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; 1966 if (coalesce->rx_coalesce_usecs_irq) 1967 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; 1968 if (coalesce->rx_max_coalesced_frames_irq) 1969 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; 1970 if (coalesce->tx_coalesce_usecs) 1971 nonzero_params |= ETHTOOL_COALESCE_TX_USECS; 1972 if (coalesce->tx_max_coalesced_frames) 1973 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; 1974 if (coalesce->tx_coalesce_usecs_irq) 1975 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; 1976 if (coalesce->tx_max_coalesced_frames_irq) 1977 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; 1978 if (coalesce->stats_block_coalesce_usecs) 1979 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; 1980 if (coalesce->use_adaptive_rx_coalesce) 1981 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; 1982 if (coalesce->use_adaptive_tx_coalesce) 1983 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; 1984 if (coalesce->pkt_rate_low) 1985 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; 1986 if (coalesce->rx_coalesce_usecs_low) 1987 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; 1988 if (coalesce->rx_max_coalesced_frames_low) 1989 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; 1990 if (coalesce->tx_coalesce_usecs_low) 1991 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; 1992 if (coalesce->tx_max_coalesced_frames_low) 1993 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; 1994 if (coalesce->pkt_rate_high) 1995 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; 1996 if (coalesce->rx_coalesce_usecs_high) 1997 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; 1998 if (coalesce->rx_max_coalesced_frames_high) 1999 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; 2000 if (coalesce->tx_coalesce_usecs_high) 2001 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; 2002 if (coalesce->tx_max_coalesced_frames_high) 2003 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; 2004 if (coalesce->rate_sample_interval) 2005 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; 2006 2007 return (supported_params & nonzero_params) == nonzero_params; 2008 } 2009 2010 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, 2011 void __user *useraddr) 2012 { 2013 struct kernel_ethtool_coalesce kernel_coalesce = {}; 2014 struct ethtool_coalesce coalesce; 2015 int ret; 2016 2017 if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce) 2018 return -EOPNOTSUPP; 2019 2020 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 2021 NULL); 2022 if (ret) 2023 return ret; 2024 2025 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) 2026 return -EFAULT; 2027 2028 if (!ethtool_set_coalesce_supported(dev, &coalesce)) 2029 return -EOPNOTSUPP; 2030 2031 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, 2032 NULL); 2033 if (!ret) 2034 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL); 2035 return ret; 2036 } 2037 2038 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) 2039 { 2040 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; 2041 struct kernel_ethtool_ringparam kernel_ringparam = {}; 2042 2043 if (!dev->ethtool_ops->get_ringparam) 2044 return -EOPNOTSUPP; 2045 2046 dev->ethtool_ops->get_ringparam(dev, &ringparam, 2047 &kernel_ringparam, NULL); 2048 2049 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) 2050 return -EFAULT; 2051 return 0; 2052 } 2053 2054 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) 2055 { 2056 struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM }; 2057 struct kernel_ethtool_ringparam kernel_ringparam; 2058 int ret; 2059 2060 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) 2061 return -EOPNOTSUPP; 2062 2063 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) 2064 return -EFAULT; 2065 2066 dev->ethtool_ops->get_ringparam(dev, &max, &kernel_ringparam, NULL); 2067 2068 /* ensure new ring parameters are within the maximums */ 2069 if (ringparam.rx_pending > max.rx_max_pending || 2070 ringparam.rx_mini_pending > max.rx_mini_max_pending || 2071 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || 2072 ringparam.tx_pending > max.tx_max_pending) 2073 return -EINVAL; 2074 2075 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, 2076 &kernel_ringparam, NULL); 2077 if (!ret) 2078 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL); 2079 return ret; 2080 } 2081 2082 static noinline_for_stack int ethtool_get_channels(struct net_device *dev, 2083 void __user *useraddr) 2084 { 2085 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; 2086 2087 if (!dev->ethtool_ops->get_channels) 2088 return -EOPNOTSUPP; 2089 2090 dev->ethtool_ops->get_channels(dev, &channels); 2091 2092 if (copy_to_user(useraddr, &channels, sizeof(channels))) 2093 return -EFAULT; 2094 return 0; 2095 } 2096 2097 static noinline_for_stack int ethtool_set_channels(struct net_device *dev, 2098 void __user *useraddr) 2099 { 2100 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; 2101 u16 from_channel, to_channel; 2102 unsigned int i; 2103 int ret; 2104 2105 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) 2106 return -EOPNOTSUPP; 2107 2108 if (copy_from_user(&channels, useraddr, sizeof(channels))) 2109 return -EFAULT; 2110 2111 dev->ethtool_ops->get_channels(dev, &curr); 2112 2113 if (channels.rx_count == curr.rx_count && 2114 channels.tx_count == curr.tx_count && 2115 channels.combined_count == curr.combined_count && 2116 channels.other_count == curr.other_count) 2117 return 0; 2118 2119 /* ensure new counts are within the maximums */ 2120 if (channels.rx_count > curr.max_rx || 2121 channels.tx_count > curr.max_tx || 2122 channels.combined_count > curr.max_combined || 2123 channels.other_count > curr.max_other) 2124 return -EINVAL; 2125 2126 /* ensure there is at least one RX and one TX channel */ 2127 if (!channels.combined_count && 2128 (!channels.rx_count || !channels.tx_count)) 2129 return -EINVAL; 2130 2131 ret = ethtool_check_max_channel(dev, channels, NULL); 2132 if (ret) 2133 return ret; 2134 2135 /* Disabling channels, query zero-copy AF_XDP sockets */ 2136 from_channel = channels.combined_count + 2137 min(channels.rx_count, channels.tx_count); 2138 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); 2139 for (i = from_channel; i < to_channel; i++) 2140 if (xsk_get_pool_from_qid(dev, i)) 2141 return -EINVAL; 2142 2143 ret = dev->ethtool_ops->set_channels(dev, &channels); 2144 if (!ret) 2145 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL); 2146 return ret; 2147 } 2148 2149 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) 2150 { 2151 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; 2152 2153 if (!dev->ethtool_ops->get_pauseparam) 2154 return -EOPNOTSUPP; 2155 2156 dev->ethtool_ops->get_pauseparam(dev, &pauseparam); 2157 2158 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) 2159 return -EFAULT; 2160 return 0; 2161 } 2162 2163 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) 2164 { 2165 struct ethtool_pauseparam pauseparam; 2166 int ret; 2167 2168 if (!dev->ethtool_ops->set_pauseparam) 2169 return -EOPNOTSUPP; 2170 2171 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) 2172 return -EFAULT; 2173 2174 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); 2175 if (!ret) 2176 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL); 2177 return ret; 2178 } 2179 2180 static int ethtool_self_test(struct net_device *dev, char __user *useraddr) 2181 { 2182 struct ethtool_test test; 2183 const struct ethtool_ops *ops = dev->ethtool_ops; 2184 u64 *data; 2185 int ret, test_len; 2186 2187 if (!ops->self_test || !ops->get_sset_count) 2188 return -EOPNOTSUPP; 2189 2190 test_len = ops->get_sset_count(dev, ETH_SS_TEST); 2191 if (test_len < 0) 2192 return test_len; 2193 WARN_ON(test_len == 0); 2194 2195 if (copy_from_user(&test, useraddr, sizeof(test))) 2196 return -EFAULT; 2197 2198 test.len = test_len; 2199 data = kcalloc(test_len, sizeof(u64), GFP_USER); 2200 if (!data) 2201 return -ENOMEM; 2202 2203 netif_testing_on(dev); 2204 ops->self_test(dev, &test, data); 2205 netif_testing_off(dev); 2206 2207 ret = -EFAULT; 2208 if (copy_to_user(useraddr, &test, sizeof(test))) 2209 goto out; 2210 useraddr += sizeof(test); 2211 if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) 2212 goto out; 2213 ret = 0; 2214 2215 out: 2216 kfree(data); 2217 return ret; 2218 } 2219 2220 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) 2221 { 2222 struct ethtool_gstrings gstrings; 2223 u8 *data; 2224 int ret; 2225 2226 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) 2227 return -EFAULT; 2228 2229 ret = __ethtool_get_sset_count(dev, gstrings.string_set); 2230 if (ret < 0) 2231 return ret; 2232 if (ret > S32_MAX / ETH_GSTRING_LEN) 2233 return -ENOMEM; 2234 WARN_ON_ONCE(!ret); 2235 2236 gstrings.len = ret; 2237 2238 if (gstrings.len) { 2239 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); 2240 if (!data) 2241 return -ENOMEM; 2242 2243 __ethtool_get_strings(dev, gstrings.string_set, data); 2244 } else { 2245 data = NULL; 2246 } 2247 2248 ret = -EFAULT; 2249 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) 2250 goto out; 2251 useraddr += sizeof(gstrings); 2252 if (gstrings.len && 2253 copy_to_user(useraddr, data, 2254 array_size(gstrings.len, ETH_GSTRING_LEN))) 2255 goto out; 2256 ret = 0; 2257 2258 out: 2259 vfree(data); 2260 return ret; 2261 } 2262 2263 __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) 2264 { 2265 va_list args; 2266 2267 va_start(args, fmt); 2268 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); 2269 va_end(args); 2270 2271 *data += ETH_GSTRING_LEN; 2272 } 2273 EXPORT_SYMBOL(ethtool_sprintf); 2274 2275 void ethtool_puts(u8 **data, const char *str) 2276 { 2277 strscpy(*data, str, ETH_GSTRING_LEN); 2278 *data += ETH_GSTRING_LEN; 2279 } 2280 EXPORT_SYMBOL(ethtool_puts); 2281 2282 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) 2283 { 2284 struct ethtool_value id; 2285 static bool busy; 2286 const struct ethtool_ops *ops = dev->ethtool_ops; 2287 netdevice_tracker dev_tracker; 2288 int rc; 2289 2290 if (!ops->set_phys_id) 2291 return -EOPNOTSUPP; 2292 2293 if (busy) 2294 return -EBUSY; 2295 2296 if (copy_from_user(&id, useraddr, sizeof(id))) 2297 return -EFAULT; 2298 2299 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); 2300 if (rc < 0) 2301 return rc; 2302 2303 /* Drop the RTNL lock while waiting, but prevent reentry or 2304 * removal of the device. 2305 */ 2306 busy = true; 2307 netdev_hold(dev, &dev_tracker, GFP_KERNEL); 2308 rtnl_unlock(); 2309 2310 if (rc == 0) { 2311 /* Driver will handle this itself */ 2312 schedule_timeout_interruptible( 2313 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); 2314 } else { 2315 /* Driver expects to be called at twice the frequency in rc */ 2316 int n = rc * 2, interval = HZ / n; 2317 u64 count = mul_u32_u32(n, id.data); 2318 u64 i = 0; 2319 2320 do { 2321 rtnl_lock(); 2322 rc = ops->set_phys_id(dev, 2323 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); 2324 rtnl_unlock(); 2325 if (rc) 2326 break; 2327 schedule_timeout_interruptible(interval); 2328 } while (!signal_pending(current) && (!id.data || i < count)); 2329 } 2330 2331 rtnl_lock(); 2332 netdev_put(dev, &dev_tracker); 2333 busy = false; 2334 2335 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); 2336 return rc; 2337 } 2338 2339 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) 2340 { 2341 struct ethtool_stats stats; 2342 const struct ethtool_ops *ops = dev->ethtool_ops; 2343 u64 *data; 2344 int ret, n_stats; 2345 2346 if (!ops->get_ethtool_stats || !ops->get_sset_count) 2347 return -EOPNOTSUPP; 2348 2349 n_stats = ops->get_sset_count(dev, ETH_SS_STATS); 2350 if (n_stats < 0) 2351 return n_stats; 2352 if (n_stats > S32_MAX / sizeof(u64)) 2353 return -ENOMEM; 2354 WARN_ON_ONCE(!n_stats); 2355 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2356 return -EFAULT; 2357 2358 stats.n_stats = n_stats; 2359 2360 if (n_stats) { 2361 data = vzalloc(array_size(n_stats, sizeof(u64))); 2362 if (!data) 2363 return -ENOMEM; 2364 ops->get_ethtool_stats(dev, &stats, data); 2365 } else { 2366 data = NULL; 2367 } 2368 2369 ret = -EFAULT; 2370 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2371 goto out; 2372 useraddr += sizeof(stats); 2373 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) 2374 goto out; 2375 ret = 0; 2376 2377 out: 2378 vfree(data); 2379 return ret; 2380 } 2381 2382 static int ethtool_vzalloc_stats_array(int n_stats, u64 **data) 2383 { 2384 if (n_stats < 0) 2385 return n_stats; 2386 if (n_stats > S32_MAX / sizeof(u64)) 2387 return -ENOMEM; 2388 if (WARN_ON_ONCE(!n_stats)) 2389 return -EOPNOTSUPP; 2390 2391 *data = vzalloc(array_size(n_stats, sizeof(u64))); 2392 if (!*data) 2393 return -ENOMEM; 2394 2395 return 0; 2396 } 2397 2398 static int ethtool_get_phy_stats_phydev(struct phy_device *phydev, 2399 struct ethtool_stats *stats, 2400 u64 **data) 2401 { 2402 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 2403 int n_stats, ret; 2404 2405 if (!phy_ops || !phy_ops->get_sset_count || !phy_ops->get_stats) 2406 return -EOPNOTSUPP; 2407 2408 n_stats = phy_ops->get_sset_count(phydev); 2409 2410 ret = ethtool_vzalloc_stats_array(n_stats, data); 2411 if (ret) 2412 return ret; 2413 2414 stats->n_stats = n_stats; 2415 return phy_ops->get_stats(phydev, stats, *data); 2416 } 2417 2418 static int ethtool_get_phy_stats_ethtool(struct net_device *dev, 2419 struct ethtool_stats *stats, 2420 u64 **data) 2421 { 2422 const struct ethtool_ops *ops = dev->ethtool_ops; 2423 int n_stats, ret; 2424 2425 if (!ops || !ops->get_sset_count || !ops->get_ethtool_phy_stats) 2426 return -EOPNOTSUPP; 2427 2428 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); 2429 2430 ret = ethtool_vzalloc_stats_array(n_stats, data); 2431 if (ret) 2432 return ret; 2433 2434 stats->n_stats = n_stats; 2435 ops->get_ethtool_phy_stats(dev, stats, *data); 2436 2437 return 0; 2438 } 2439 2440 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) 2441 { 2442 struct phy_device *phydev = dev->phydev; 2443 struct ethtool_stats stats; 2444 u64 *data = NULL; 2445 int ret = -EOPNOTSUPP; 2446 2447 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2448 return -EFAULT; 2449 2450 if (phydev) 2451 ret = ethtool_get_phy_stats_phydev(phydev, &stats, &data); 2452 2453 if (ret == -EOPNOTSUPP) 2454 ret = ethtool_get_phy_stats_ethtool(dev, &stats, &data); 2455 2456 if (ret) 2457 goto out; 2458 2459 if (copy_to_user(useraddr, &stats, sizeof(stats))) { 2460 ret = -EFAULT; 2461 goto out; 2462 } 2463 2464 useraddr += sizeof(stats); 2465 if (copy_to_user(useraddr, data, array_size(stats.n_stats, sizeof(u64)))) 2466 ret = -EFAULT; 2467 2468 out: 2469 vfree(data); 2470 return ret; 2471 } 2472 2473 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) 2474 { 2475 struct ethtool_perm_addr epaddr; 2476 2477 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) 2478 return -EFAULT; 2479 2480 if (epaddr.size < dev->addr_len) 2481 return -ETOOSMALL; 2482 epaddr.size = dev->addr_len; 2483 2484 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) 2485 return -EFAULT; 2486 useraddr += sizeof(epaddr); 2487 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) 2488 return -EFAULT; 2489 return 0; 2490 } 2491 2492 static int ethtool_get_value(struct net_device *dev, char __user *useraddr, 2493 u32 cmd, u32 (*actor)(struct net_device *)) 2494 { 2495 struct ethtool_value edata = { .cmd = cmd }; 2496 2497 if (!actor) 2498 return -EOPNOTSUPP; 2499 2500 edata.data = actor(dev); 2501 2502 if (copy_to_user(useraddr, &edata, sizeof(edata))) 2503 return -EFAULT; 2504 return 0; 2505 } 2506 2507 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, 2508 void (*actor)(struct net_device *, u32)) 2509 { 2510 struct ethtool_value edata; 2511 2512 if (!actor) 2513 return -EOPNOTSUPP; 2514 2515 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2516 return -EFAULT; 2517 2518 actor(dev, edata.data); 2519 return 0; 2520 } 2521 2522 static int ethtool_set_value(struct net_device *dev, char __user *useraddr, 2523 int (*actor)(struct net_device *, u32)) 2524 { 2525 struct ethtool_value edata; 2526 2527 if (!actor) 2528 return -EOPNOTSUPP; 2529 2530 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2531 return -EFAULT; 2532 2533 return actor(dev, edata.data); 2534 } 2535 2536 static int 2537 ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) 2538 { 2539 if (!dev->ethtool_ops->flash_device) { 2540 req->devlink = netdev_to_devlink_get(dev); 2541 return 0; 2542 } 2543 2544 return dev->ethtool_ops->flash_device(dev, &req->efl); 2545 } 2546 2547 static int ethtool_set_dump(struct net_device *dev, 2548 void __user *useraddr) 2549 { 2550 struct ethtool_dump dump; 2551 2552 if (!dev->ethtool_ops->set_dump) 2553 return -EOPNOTSUPP; 2554 2555 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2556 return -EFAULT; 2557 2558 return dev->ethtool_ops->set_dump(dev, &dump); 2559 } 2560 2561 static int ethtool_get_dump_flag(struct net_device *dev, 2562 void __user *useraddr) 2563 { 2564 int ret; 2565 struct ethtool_dump dump; 2566 const struct ethtool_ops *ops = dev->ethtool_ops; 2567 2568 if (!ops->get_dump_flag) 2569 return -EOPNOTSUPP; 2570 2571 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2572 return -EFAULT; 2573 2574 ret = ops->get_dump_flag(dev, &dump); 2575 if (ret) 2576 return ret; 2577 2578 if (copy_to_user(useraddr, &dump, sizeof(dump))) 2579 return -EFAULT; 2580 return 0; 2581 } 2582 2583 static int ethtool_get_dump_data(struct net_device *dev, 2584 void __user *useraddr) 2585 { 2586 int ret; 2587 __u32 len; 2588 struct ethtool_dump dump, tmp; 2589 const struct ethtool_ops *ops = dev->ethtool_ops; 2590 void *data = NULL; 2591 2592 if (!ops->get_dump_data || !ops->get_dump_flag) 2593 return -EOPNOTSUPP; 2594 2595 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2596 return -EFAULT; 2597 2598 memset(&tmp, 0, sizeof(tmp)); 2599 tmp.cmd = ETHTOOL_GET_DUMP_FLAG; 2600 ret = ops->get_dump_flag(dev, &tmp); 2601 if (ret) 2602 return ret; 2603 2604 len = min(tmp.len, dump.len); 2605 if (!len) 2606 return -EFAULT; 2607 2608 /* Don't ever let the driver think there's more space available 2609 * than it requested with .get_dump_flag(). 2610 */ 2611 dump.len = len; 2612 2613 /* Always allocate enough space to hold the whole thing so that the 2614 * driver does not need to check the length and bother with partial 2615 * dumping. 2616 */ 2617 data = vzalloc(tmp.len); 2618 if (!data) 2619 return -ENOMEM; 2620 ret = ops->get_dump_data(dev, &dump, data); 2621 if (ret) 2622 goto out; 2623 2624 /* There are two sane possibilities: 2625 * 1. The driver's .get_dump_data() does not touch dump.len. 2626 * 2. Or it may set dump.len to how much it really writes, which 2627 * should be tmp.len (or len if it can do a partial dump). 2628 * In any case respond to userspace with the actual length of data 2629 * it's receiving. 2630 */ 2631 WARN_ON(dump.len != len && dump.len != tmp.len); 2632 dump.len = len; 2633 2634 if (copy_to_user(useraddr, &dump, sizeof(dump))) { 2635 ret = -EFAULT; 2636 goto out; 2637 } 2638 useraddr += offsetof(struct ethtool_dump, data); 2639 if (copy_to_user(useraddr, data, len)) 2640 ret = -EFAULT; 2641 out: 2642 vfree(data); 2643 return ret; 2644 } 2645 2646 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) 2647 { 2648 struct kernel_ethtool_ts_info kernel_info; 2649 struct ethtool_ts_info info = {}; 2650 int err; 2651 2652 err = __ethtool_get_ts_info(dev, &kernel_info); 2653 if (err) 2654 return err; 2655 2656 info.cmd = kernel_info.cmd; 2657 info.so_timestamping = kernel_info.so_timestamping; 2658 info.phc_index = kernel_info.phc_index; 2659 info.tx_types = kernel_info.tx_types; 2660 info.rx_filters = kernel_info.rx_filters; 2661 2662 if (copy_to_user(useraddr, &info, sizeof(info))) 2663 return -EFAULT; 2664 2665 return 0; 2666 } 2667 2668 int ethtool_get_module_info_call(struct net_device *dev, 2669 struct ethtool_modinfo *modinfo) 2670 { 2671 const struct ethtool_ops *ops = dev->ethtool_ops; 2672 struct phy_device *phydev = dev->phydev; 2673 2674 if (dev->ethtool->module_fw_flash_in_progress) 2675 return -EBUSY; 2676 2677 if (dev->sfp_bus) 2678 return sfp_get_module_info(dev->sfp_bus, modinfo); 2679 2680 if (phydev && phydev->drv && phydev->drv->module_info) 2681 return phydev->drv->module_info(phydev, modinfo); 2682 2683 if (ops->get_module_info) 2684 return ops->get_module_info(dev, modinfo); 2685 2686 return -EOPNOTSUPP; 2687 } 2688 2689 static int ethtool_get_module_info(struct net_device *dev, 2690 void __user *useraddr) 2691 { 2692 int ret; 2693 struct ethtool_modinfo modinfo; 2694 2695 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) 2696 return -EFAULT; 2697 2698 ret = ethtool_get_module_info_call(dev, &modinfo); 2699 if (ret) 2700 return ret; 2701 2702 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) 2703 return -EFAULT; 2704 2705 return 0; 2706 } 2707 2708 int ethtool_get_module_eeprom_call(struct net_device *dev, 2709 struct ethtool_eeprom *ee, u8 *data) 2710 { 2711 const struct ethtool_ops *ops = dev->ethtool_ops; 2712 struct phy_device *phydev = dev->phydev; 2713 2714 if (dev->ethtool->module_fw_flash_in_progress) 2715 return -EBUSY; 2716 2717 if (dev->sfp_bus) 2718 return sfp_get_module_eeprom(dev->sfp_bus, ee, data); 2719 2720 if (phydev && phydev->drv && phydev->drv->module_eeprom) 2721 return phydev->drv->module_eeprom(phydev, ee, data); 2722 2723 if (ops->get_module_eeprom) 2724 return ops->get_module_eeprom(dev, ee, data); 2725 2726 return -EOPNOTSUPP; 2727 } 2728 2729 static int ethtool_get_module_eeprom(struct net_device *dev, 2730 void __user *useraddr) 2731 { 2732 int ret; 2733 struct ethtool_modinfo modinfo; 2734 2735 ret = ethtool_get_module_info_call(dev, &modinfo); 2736 if (ret) 2737 return ret; 2738 2739 return ethtool_get_any_eeprom(dev, useraddr, 2740 ethtool_get_module_eeprom_call, 2741 modinfo.eeprom_len); 2742 } 2743 2744 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) 2745 { 2746 switch (tuna->id) { 2747 case ETHTOOL_RX_COPYBREAK: 2748 case ETHTOOL_TX_COPYBREAK: 2749 case ETHTOOL_TX_COPYBREAK_BUF_SIZE: 2750 if (tuna->len != sizeof(u32) || 2751 tuna->type_id != ETHTOOL_TUNABLE_U32) 2752 return -EINVAL; 2753 break; 2754 case ETHTOOL_PFC_PREVENTION_TOUT: 2755 if (tuna->len != sizeof(u16) || 2756 tuna->type_id != ETHTOOL_TUNABLE_U16) 2757 return -EINVAL; 2758 break; 2759 default: 2760 return -EINVAL; 2761 } 2762 2763 return 0; 2764 } 2765 2766 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) 2767 { 2768 int ret; 2769 struct ethtool_tunable tuna; 2770 const struct ethtool_ops *ops = dev->ethtool_ops; 2771 void *data; 2772 2773 if (!ops->get_tunable) 2774 return -EOPNOTSUPP; 2775 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2776 return -EFAULT; 2777 ret = ethtool_tunable_valid(&tuna); 2778 if (ret) 2779 return ret; 2780 data = kzalloc(tuna.len, GFP_USER); 2781 if (!data) 2782 return -ENOMEM; 2783 ret = ops->get_tunable(dev, &tuna, data); 2784 if (ret) 2785 goto out; 2786 useraddr += sizeof(tuna); 2787 ret = -EFAULT; 2788 if (copy_to_user(useraddr, data, tuna.len)) 2789 goto out; 2790 ret = 0; 2791 2792 out: 2793 kfree(data); 2794 return ret; 2795 } 2796 2797 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) 2798 { 2799 int ret; 2800 struct ethtool_tunable tuna; 2801 const struct ethtool_ops *ops = dev->ethtool_ops; 2802 void *data; 2803 2804 if (!ops->set_tunable) 2805 return -EOPNOTSUPP; 2806 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2807 return -EFAULT; 2808 ret = ethtool_tunable_valid(&tuna); 2809 if (ret) 2810 return ret; 2811 useraddr += sizeof(tuna); 2812 data = memdup_user(useraddr, tuna.len); 2813 if (IS_ERR(data)) 2814 return PTR_ERR(data); 2815 ret = ops->set_tunable(dev, &tuna, data); 2816 2817 kfree(data); 2818 return ret; 2819 } 2820 2821 static noinline_for_stack int 2822 ethtool_get_per_queue_coalesce(struct net_device *dev, 2823 void __user *useraddr, 2824 struct ethtool_per_queue_op *per_queue_opt) 2825 { 2826 u32 bit; 2827 int ret; 2828 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2829 2830 if (!dev->ethtool_ops->get_per_queue_coalesce) 2831 return -EOPNOTSUPP; 2832 2833 useraddr += sizeof(*per_queue_opt); 2834 2835 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, 2836 MAX_NUM_QUEUE); 2837 2838 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2839 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2840 2841 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); 2842 if (ret != 0) 2843 return ret; 2844 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2845 return -EFAULT; 2846 useraddr += sizeof(coalesce); 2847 } 2848 2849 return 0; 2850 } 2851 2852 static noinline_for_stack int 2853 ethtool_set_per_queue_coalesce(struct net_device *dev, 2854 void __user *useraddr, 2855 struct ethtool_per_queue_op *per_queue_opt) 2856 { 2857 u32 bit; 2858 int i, ret = 0; 2859 int n_queue; 2860 struct ethtool_coalesce *backup = NULL, *tmp = NULL; 2861 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2862 2863 if ((!dev->ethtool_ops->set_per_queue_coalesce) || 2864 (!dev->ethtool_ops->get_per_queue_coalesce)) 2865 return -EOPNOTSUPP; 2866 2867 useraddr += sizeof(*per_queue_opt); 2868 2869 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); 2870 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); 2871 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); 2872 if (!backup) 2873 return -ENOMEM; 2874 2875 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2876 struct ethtool_coalesce coalesce; 2877 2878 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); 2879 if (ret != 0) 2880 goto roll_back; 2881 2882 tmp++; 2883 2884 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { 2885 ret = -EFAULT; 2886 goto roll_back; 2887 } 2888 2889 if (!ethtool_set_coalesce_supported(dev, &coalesce)) { 2890 ret = -EOPNOTSUPP; 2891 goto roll_back; 2892 } 2893 2894 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); 2895 if (ret != 0) 2896 goto roll_back; 2897 2898 useraddr += sizeof(coalesce); 2899 } 2900 2901 roll_back: 2902 if (ret != 0) { 2903 tmp = backup; 2904 for_each_set_bit(i, queue_mask, bit) { 2905 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); 2906 tmp++; 2907 } 2908 } 2909 kfree(backup); 2910 2911 return ret; 2912 } 2913 2914 static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, 2915 void __user *useraddr, u32 sub_cmd) 2916 { 2917 struct ethtool_per_queue_op per_queue_opt; 2918 2919 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) 2920 return -EFAULT; 2921 2922 if (per_queue_opt.sub_command != sub_cmd) 2923 return -EINVAL; 2924 2925 switch (per_queue_opt.sub_command) { 2926 case ETHTOOL_GCOALESCE: 2927 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2928 case ETHTOOL_SCOALESCE: 2929 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2930 default: 2931 return -EOPNOTSUPP; 2932 } 2933 } 2934 2935 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) 2936 { 2937 switch (tuna->id) { 2938 case ETHTOOL_PHY_DOWNSHIFT: 2939 case ETHTOOL_PHY_FAST_LINK_DOWN: 2940 if (tuna->len != sizeof(u8) || 2941 tuna->type_id != ETHTOOL_TUNABLE_U8) 2942 return -EINVAL; 2943 break; 2944 case ETHTOOL_PHY_EDPD: 2945 if (tuna->len != sizeof(u16) || 2946 tuna->type_id != ETHTOOL_TUNABLE_U16) 2947 return -EINVAL; 2948 break; 2949 default: 2950 return -EINVAL; 2951 } 2952 2953 return 0; 2954 } 2955 2956 static int get_phy_tunable(struct net_device *dev, void __user *useraddr) 2957 { 2958 struct phy_device *phydev = dev->phydev; 2959 struct ethtool_tunable tuna; 2960 bool phy_drv_tunable; 2961 void *data; 2962 int ret; 2963 2964 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 2965 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) 2966 return -EOPNOTSUPP; 2967 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2968 return -EFAULT; 2969 ret = ethtool_phy_tunable_valid(&tuna); 2970 if (ret) 2971 return ret; 2972 data = kzalloc(tuna.len, GFP_USER); 2973 if (!data) 2974 return -ENOMEM; 2975 if (phy_drv_tunable) { 2976 mutex_lock(&phydev->lock); 2977 ret = phydev->drv->get_tunable(phydev, &tuna, data); 2978 mutex_unlock(&phydev->lock); 2979 } else { 2980 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); 2981 } 2982 if (ret) 2983 goto out; 2984 useraddr += sizeof(tuna); 2985 ret = -EFAULT; 2986 if (copy_to_user(useraddr, data, tuna.len)) 2987 goto out; 2988 ret = 0; 2989 2990 out: 2991 kfree(data); 2992 return ret; 2993 } 2994 2995 static int set_phy_tunable(struct net_device *dev, void __user *useraddr) 2996 { 2997 struct phy_device *phydev = dev->phydev; 2998 struct ethtool_tunable tuna; 2999 bool phy_drv_tunable; 3000 void *data; 3001 int ret; 3002 3003 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 3004 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) 3005 return -EOPNOTSUPP; 3006 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 3007 return -EFAULT; 3008 ret = ethtool_phy_tunable_valid(&tuna); 3009 if (ret) 3010 return ret; 3011 useraddr += sizeof(tuna); 3012 data = memdup_user(useraddr, tuna.len); 3013 if (IS_ERR(data)) 3014 return PTR_ERR(data); 3015 if (phy_drv_tunable) { 3016 mutex_lock(&phydev->lock); 3017 ret = phydev->drv->set_tunable(phydev, &tuna, data); 3018 mutex_unlock(&phydev->lock); 3019 } else { 3020 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); 3021 } 3022 3023 kfree(data); 3024 return ret; 3025 } 3026 3027 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) 3028 { 3029 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; 3030 int rc; 3031 3032 if (!dev->ethtool_ops->get_fecparam) 3033 return -EOPNOTSUPP; 3034 3035 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); 3036 if (rc) 3037 return rc; 3038 3039 if (WARN_ON_ONCE(fecparam.reserved)) 3040 fecparam.reserved = 0; 3041 3042 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) 3043 return -EFAULT; 3044 return 0; 3045 } 3046 3047 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) 3048 { 3049 struct ethtool_fecparam fecparam; 3050 3051 if (!dev->ethtool_ops->set_fecparam) 3052 return -EOPNOTSUPP; 3053 3054 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) 3055 return -EFAULT; 3056 3057 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) 3058 return -EINVAL; 3059 3060 fecparam.active_fec = 0; 3061 fecparam.reserved = 0; 3062 3063 return dev->ethtool_ops->set_fecparam(dev, &fecparam); 3064 } 3065 3066 /* The main entry point in this file. Called from net/core/dev_ioctl.c */ 3067 3068 static int 3069 __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, 3070 u32 ethcmd, struct ethtool_devlink_compat *devlink_state) 3071 { 3072 struct net_device *dev; 3073 u32 sub_cmd; 3074 int rc; 3075 netdev_features_t old_features; 3076 3077 dev = __dev_get_by_name(net, ifr->ifr_name); 3078 if (!dev) 3079 return -ENODEV; 3080 3081 if (ethcmd == ETHTOOL_PERQUEUE) { 3082 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) 3083 return -EFAULT; 3084 } else { 3085 sub_cmd = ethcmd; 3086 } 3087 /* Allow some commands to be done by anyone */ 3088 switch (sub_cmd) { 3089 case ETHTOOL_GSET: 3090 case ETHTOOL_GDRVINFO: 3091 case ETHTOOL_GMSGLVL: 3092 case ETHTOOL_GLINK: 3093 case ETHTOOL_GCOALESCE: 3094 case ETHTOOL_GRINGPARAM: 3095 case ETHTOOL_GPAUSEPARAM: 3096 case ETHTOOL_GRXCSUM: 3097 case ETHTOOL_GTXCSUM: 3098 case ETHTOOL_GSG: 3099 case ETHTOOL_GSSET_INFO: 3100 case ETHTOOL_GSTRINGS: 3101 case ETHTOOL_GSTATS: 3102 case ETHTOOL_GPHYSTATS: 3103 case ETHTOOL_GTSO: 3104 case ETHTOOL_GPERMADDR: 3105 case ETHTOOL_GUFO: 3106 case ETHTOOL_GGSO: 3107 case ETHTOOL_GGRO: 3108 case ETHTOOL_GFLAGS: 3109 case ETHTOOL_GPFLAGS: 3110 case ETHTOOL_GRXFH: 3111 case ETHTOOL_GRXRINGS: 3112 case ETHTOOL_GRXCLSRLCNT: 3113 case ETHTOOL_GRXCLSRULE: 3114 case ETHTOOL_GRXCLSRLALL: 3115 case ETHTOOL_GRXFHINDIR: 3116 case ETHTOOL_GRSSH: 3117 case ETHTOOL_GFEATURES: 3118 case ETHTOOL_GCHANNELS: 3119 case ETHTOOL_GET_TS_INFO: 3120 case ETHTOOL_GEEE: 3121 case ETHTOOL_GTUNABLE: 3122 case ETHTOOL_PHY_GTUNABLE: 3123 case ETHTOOL_GLINKSETTINGS: 3124 case ETHTOOL_GFECPARAM: 3125 break; 3126 default: 3127 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 3128 return -EPERM; 3129 } 3130 3131 if (dev->dev.parent) 3132 pm_runtime_get_sync(dev->dev.parent); 3133 3134 if (!netif_device_present(dev)) { 3135 rc = -ENODEV; 3136 goto out; 3137 } 3138 3139 if (dev->ethtool_ops->begin) { 3140 rc = dev->ethtool_ops->begin(dev); 3141 if (rc < 0) 3142 goto out; 3143 } 3144 old_features = dev->features; 3145 3146 switch (ethcmd) { 3147 case ETHTOOL_GSET: 3148 rc = ethtool_get_settings(dev, useraddr); 3149 break; 3150 case ETHTOOL_SSET: 3151 rc = ethtool_set_settings(dev, useraddr); 3152 break; 3153 case ETHTOOL_GDRVINFO: 3154 rc = ethtool_get_drvinfo(dev, devlink_state); 3155 break; 3156 case ETHTOOL_GREGS: 3157 rc = ethtool_get_regs(dev, useraddr); 3158 break; 3159 case ETHTOOL_GWOL: 3160 rc = ethtool_get_wol(dev, useraddr); 3161 break; 3162 case ETHTOOL_SWOL: 3163 rc = ethtool_set_wol(dev, useraddr); 3164 break; 3165 case ETHTOOL_GMSGLVL: 3166 rc = ethtool_get_value(dev, useraddr, ethcmd, 3167 dev->ethtool_ops->get_msglevel); 3168 break; 3169 case ETHTOOL_SMSGLVL: 3170 rc = ethtool_set_value_void(dev, useraddr, 3171 dev->ethtool_ops->set_msglevel); 3172 if (!rc) 3173 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL); 3174 break; 3175 case ETHTOOL_GEEE: 3176 rc = ethtool_get_eee(dev, useraddr); 3177 break; 3178 case ETHTOOL_SEEE: 3179 rc = ethtool_set_eee(dev, useraddr); 3180 break; 3181 case ETHTOOL_NWAY_RST: 3182 rc = ethtool_nway_reset(dev); 3183 break; 3184 case ETHTOOL_GLINK: 3185 rc = ethtool_get_link(dev, useraddr); 3186 break; 3187 case ETHTOOL_GEEPROM: 3188 rc = ethtool_get_eeprom(dev, useraddr); 3189 break; 3190 case ETHTOOL_SEEPROM: 3191 rc = ethtool_set_eeprom(dev, useraddr); 3192 break; 3193 case ETHTOOL_GCOALESCE: 3194 rc = ethtool_get_coalesce(dev, useraddr); 3195 break; 3196 case ETHTOOL_SCOALESCE: 3197 rc = ethtool_set_coalesce(dev, useraddr); 3198 break; 3199 case ETHTOOL_GRINGPARAM: 3200 rc = ethtool_get_ringparam(dev, useraddr); 3201 break; 3202 case ETHTOOL_SRINGPARAM: 3203 rc = ethtool_set_ringparam(dev, useraddr); 3204 break; 3205 case ETHTOOL_GPAUSEPARAM: 3206 rc = ethtool_get_pauseparam(dev, useraddr); 3207 break; 3208 case ETHTOOL_SPAUSEPARAM: 3209 rc = ethtool_set_pauseparam(dev, useraddr); 3210 break; 3211 case ETHTOOL_TEST: 3212 rc = ethtool_self_test(dev, useraddr); 3213 break; 3214 case ETHTOOL_GSTRINGS: 3215 rc = ethtool_get_strings(dev, useraddr); 3216 break; 3217 case ETHTOOL_PHYS_ID: 3218 rc = ethtool_phys_id(dev, useraddr); 3219 break; 3220 case ETHTOOL_GSTATS: 3221 rc = ethtool_get_stats(dev, useraddr); 3222 break; 3223 case ETHTOOL_GPERMADDR: 3224 rc = ethtool_get_perm_addr(dev, useraddr); 3225 break; 3226 case ETHTOOL_GFLAGS: 3227 rc = ethtool_get_value(dev, useraddr, ethcmd, 3228 __ethtool_get_flags); 3229 break; 3230 case ETHTOOL_SFLAGS: 3231 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); 3232 break; 3233 case ETHTOOL_GPFLAGS: 3234 rc = ethtool_get_value(dev, useraddr, ethcmd, 3235 dev->ethtool_ops->get_priv_flags); 3236 if (!rc) 3237 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL); 3238 break; 3239 case ETHTOOL_SPFLAGS: 3240 rc = ethtool_set_value(dev, useraddr, 3241 dev->ethtool_ops->set_priv_flags); 3242 break; 3243 case ETHTOOL_GRXFH: 3244 case ETHTOOL_GRXRINGS: 3245 case ETHTOOL_GRXCLSRLCNT: 3246 case ETHTOOL_GRXCLSRULE: 3247 case ETHTOOL_GRXCLSRLALL: 3248 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); 3249 break; 3250 case ETHTOOL_SRXFH: 3251 case ETHTOOL_SRXCLSRLDEL: 3252 case ETHTOOL_SRXCLSRLINS: 3253 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); 3254 break; 3255 case ETHTOOL_FLASHDEV: 3256 rc = ethtool_flash_device(dev, devlink_state); 3257 break; 3258 case ETHTOOL_RESET: 3259 rc = ethtool_reset(dev, useraddr); 3260 break; 3261 case ETHTOOL_GSSET_INFO: 3262 rc = ethtool_get_sset_info(dev, useraddr); 3263 break; 3264 case ETHTOOL_GRXFHINDIR: 3265 rc = ethtool_get_rxfh_indir(dev, useraddr); 3266 break; 3267 case ETHTOOL_SRXFHINDIR: 3268 rc = ethtool_set_rxfh_indir(dev, useraddr); 3269 break; 3270 case ETHTOOL_GRSSH: 3271 rc = ethtool_get_rxfh(dev, useraddr); 3272 break; 3273 case ETHTOOL_SRSSH: 3274 rc = ethtool_set_rxfh(dev, useraddr); 3275 break; 3276 case ETHTOOL_GFEATURES: 3277 rc = ethtool_get_features(dev, useraddr); 3278 break; 3279 case ETHTOOL_SFEATURES: 3280 rc = ethtool_set_features(dev, useraddr); 3281 break; 3282 case ETHTOOL_GTXCSUM: 3283 case ETHTOOL_GRXCSUM: 3284 case ETHTOOL_GSG: 3285 case ETHTOOL_GTSO: 3286 case ETHTOOL_GGSO: 3287 case ETHTOOL_GGRO: 3288 rc = ethtool_get_one_feature(dev, useraddr, ethcmd); 3289 break; 3290 case ETHTOOL_STXCSUM: 3291 case ETHTOOL_SRXCSUM: 3292 case ETHTOOL_SSG: 3293 case ETHTOOL_STSO: 3294 case ETHTOOL_SGSO: 3295 case ETHTOOL_SGRO: 3296 rc = ethtool_set_one_feature(dev, useraddr, ethcmd); 3297 break; 3298 case ETHTOOL_GCHANNELS: 3299 rc = ethtool_get_channels(dev, useraddr); 3300 break; 3301 case ETHTOOL_SCHANNELS: 3302 rc = ethtool_set_channels(dev, useraddr); 3303 break; 3304 case ETHTOOL_SET_DUMP: 3305 rc = ethtool_set_dump(dev, useraddr); 3306 break; 3307 case ETHTOOL_GET_DUMP_FLAG: 3308 rc = ethtool_get_dump_flag(dev, useraddr); 3309 break; 3310 case ETHTOOL_GET_DUMP_DATA: 3311 rc = ethtool_get_dump_data(dev, useraddr); 3312 break; 3313 case ETHTOOL_GET_TS_INFO: 3314 rc = ethtool_get_ts_info(dev, useraddr); 3315 break; 3316 case ETHTOOL_GMODULEINFO: 3317 rc = ethtool_get_module_info(dev, useraddr); 3318 break; 3319 case ETHTOOL_GMODULEEEPROM: 3320 rc = ethtool_get_module_eeprom(dev, useraddr); 3321 break; 3322 case ETHTOOL_GTUNABLE: 3323 rc = ethtool_get_tunable(dev, useraddr); 3324 break; 3325 case ETHTOOL_STUNABLE: 3326 rc = ethtool_set_tunable(dev, useraddr); 3327 break; 3328 case ETHTOOL_GPHYSTATS: 3329 rc = ethtool_get_phy_stats(dev, useraddr); 3330 break; 3331 case ETHTOOL_PERQUEUE: 3332 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); 3333 break; 3334 case ETHTOOL_GLINKSETTINGS: 3335 rc = ethtool_get_link_ksettings(dev, useraddr); 3336 break; 3337 case ETHTOOL_SLINKSETTINGS: 3338 rc = ethtool_set_link_ksettings(dev, useraddr); 3339 break; 3340 case ETHTOOL_PHY_GTUNABLE: 3341 rc = get_phy_tunable(dev, useraddr); 3342 break; 3343 case ETHTOOL_PHY_STUNABLE: 3344 rc = set_phy_tunable(dev, useraddr); 3345 break; 3346 case ETHTOOL_GFECPARAM: 3347 rc = ethtool_get_fecparam(dev, useraddr); 3348 break; 3349 case ETHTOOL_SFECPARAM: 3350 rc = ethtool_set_fecparam(dev, useraddr); 3351 break; 3352 default: 3353 rc = -EOPNOTSUPP; 3354 } 3355 3356 if (dev->ethtool_ops->complete) 3357 dev->ethtool_ops->complete(dev); 3358 3359 if (old_features != dev->features) 3360 netdev_features_change(dev); 3361 out: 3362 if (dev->dev.parent) 3363 pm_runtime_put(dev->dev.parent); 3364 3365 return rc; 3366 } 3367 3368 int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) 3369 { 3370 struct ethtool_devlink_compat *state; 3371 u32 ethcmd; 3372 int rc; 3373 3374 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) 3375 return -EFAULT; 3376 3377 state = kzalloc(sizeof(*state), GFP_KERNEL); 3378 if (!state) 3379 return -ENOMEM; 3380 3381 switch (ethcmd) { 3382 case ETHTOOL_FLASHDEV: 3383 if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { 3384 rc = -EFAULT; 3385 goto exit_free; 3386 } 3387 state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; 3388 break; 3389 } 3390 3391 rtnl_lock(); 3392 rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); 3393 rtnl_unlock(); 3394 if (rc) 3395 goto exit_free; 3396 3397 switch (ethcmd) { 3398 case ETHTOOL_FLASHDEV: 3399 if (state->devlink) 3400 rc = devlink_compat_flash_update(state->devlink, 3401 state->efl.data); 3402 break; 3403 case ETHTOOL_GDRVINFO: 3404 if (state->devlink) 3405 devlink_compat_running_version(state->devlink, 3406 state->info.fw_version, 3407 sizeof(state->info.fw_version)); 3408 if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { 3409 rc = -EFAULT; 3410 goto exit_free; 3411 } 3412 break; 3413 } 3414 3415 exit_free: 3416 if (state->devlink) 3417 devlink_put(state->devlink); 3418 kfree(state); 3419 return rc; 3420 } 3421 3422 struct ethtool_rx_flow_key { 3423 struct flow_dissector_key_basic basic; 3424 union { 3425 struct flow_dissector_key_ipv4_addrs ipv4; 3426 struct flow_dissector_key_ipv6_addrs ipv6; 3427 }; 3428 struct flow_dissector_key_ports tp; 3429 struct flow_dissector_key_ip ip; 3430 struct flow_dissector_key_vlan vlan; 3431 struct flow_dissector_key_eth_addrs eth_addrs; 3432 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ 3433 3434 struct ethtool_rx_flow_match { 3435 struct flow_dissector dissector; 3436 struct ethtool_rx_flow_key key; 3437 struct ethtool_rx_flow_key mask; 3438 }; 3439 3440 struct ethtool_rx_flow_rule * 3441 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) 3442 { 3443 const struct ethtool_rx_flow_spec *fs = input->fs; 3444 struct ethtool_rx_flow_match *match; 3445 struct ethtool_rx_flow_rule *flow; 3446 struct flow_action_entry *act; 3447 3448 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + 3449 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); 3450 if (!flow) 3451 return ERR_PTR(-ENOMEM); 3452 3453 /* ethtool_rx supports only one single action per rule. */ 3454 flow->rule = flow_rule_alloc(1); 3455 if (!flow->rule) { 3456 kfree(flow); 3457 return ERR_PTR(-ENOMEM); 3458 } 3459 3460 match = (struct ethtool_rx_flow_match *)flow->priv; 3461 flow->rule->match.dissector = &match->dissector; 3462 flow->rule->match.mask = &match->mask; 3463 flow->rule->match.key = &match->key; 3464 3465 match->mask.basic.n_proto = htons(0xffff); 3466 3467 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3468 case ETHER_FLOW: { 3469 const struct ethhdr *ether_spec, *ether_m_spec; 3470 3471 ether_spec = &fs->h_u.ether_spec; 3472 ether_m_spec = &fs->m_u.ether_spec; 3473 3474 if (!is_zero_ether_addr(ether_m_spec->h_source)) { 3475 ether_addr_copy(match->key.eth_addrs.src, 3476 ether_spec->h_source); 3477 ether_addr_copy(match->mask.eth_addrs.src, 3478 ether_m_spec->h_source); 3479 } 3480 if (!is_zero_ether_addr(ether_m_spec->h_dest)) { 3481 ether_addr_copy(match->key.eth_addrs.dst, 3482 ether_spec->h_dest); 3483 ether_addr_copy(match->mask.eth_addrs.dst, 3484 ether_m_spec->h_dest); 3485 } 3486 if (ether_m_spec->h_proto) { 3487 match->key.basic.n_proto = ether_spec->h_proto; 3488 match->mask.basic.n_proto = ether_m_spec->h_proto; 3489 } 3490 } 3491 break; 3492 case TCP_V4_FLOW: 3493 case UDP_V4_FLOW: { 3494 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; 3495 3496 match->key.basic.n_proto = htons(ETH_P_IP); 3497 3498 v4_spec = &fs->h_u.tcp_ip4_spec; 3499 v4_m_spec = &fs->m_u.tcp_ip4_spec; 3500 3501 if (v4_m_spec->ip4src) { 3502 match->key.ipv4.src = v4_spec->ip4src; 3503 match->mask.ipv4.src = v4_m_spec->ip4src; 3504 } 3505 if (v4_m_spec->ip4dst) { 3506 match->key.ipv4.dst = v4_spec->ip4dst; 3507 match->mask.ipv4.dst = v4_m_spec->ip4dst; 3508 } 3509 if (v4_m_spec->ip4src || 3510 v4_m_spec->ip4dst) { 3511 match->dissector.used_keys |= 3512 BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS); 3513 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = 3514 offsetof(struct ethtool_rx_flow_key, ipv4); 3515 } 3516 if (v4_m_spec->psrc) { 3517 match->key.tp.src = v4_spec->psrc; 3518 match->mask.tp.src = v4_m_spec->psrc; 3519 } 3520 if (v4_m_spec->pdst) { 3521 match->key.tp.dst = v4_spec->pdst; 3522 match->mask.tp.dst = v4_m_spec->pdst; 3523 } 3524 if (v4_m_spec->psrc || 3525 v4_m_spec->pdst) { 3526 match->dissector.used_keys |= 3527 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3528 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3529 offsetof(struct ethtool_rx_flow_key, tp); 3530 } 3531 if (v4_m_spec->tos) { 3532 match->key.ip.tos = v4_spec->tos; 3533 match->mask.ip.tos = v4_m_spec->tos; 3534 match->dissector.used_keys |= 3535 BIT(FLOW_DISSECTOR_KEY_IP); 3536 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3537 offsetof(struct ethtool_rx_flow_key, ip); 3538 } 3539 } 3540 break; 3541 case TCP_V6_FLOW: 3542 case UDP_V6_FLOW: { 3543 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; 3544 3545 match->key.basic.n_proto = htons(ETH_P_IPV6); 3546 3547 v6_spec = &fs->h_u.tcp_ip6_spec; 3548 v6_m_spec = &fs->m_u.tcp_ip6_spec; 3549 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) { 3550 memcpy(&match->key.ipv6.src, v6_spec->ip6src, 3551 sizeof(match->key.ipv6.src)); 3552 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, 3553 sizeof(match->mask.ipv6.src)); 3554 } 3555 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3556 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, 3557 sizeof(match->key.ipv6.dst)); 3558 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, 3559 sizeof(match->mask.ipv6.dst)); 3560 } 3561 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) || 3562 !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3563 match->dissector.used_keys |= 3564 BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS); 3565 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = 3566 offsetof(struct ethtool_rx_flow_key, ipv6); 3567 } 3568 if (v6_m_spec->psrc) { 3569 match->key.tp.src = v6_spec->psrc; 3570 match->mask.tp.src = v6_m_spec->psrc; 3571 } 3572 if (v6_m_spec->pdst) { 3573 match->key.tp.dst = v6_spec->pdst; 3574 match->mask.tp.dst = v6_m_spec->pdst; 3575 } 3576 if (v6_m_spec->psrc || 3577 v6_m_spec->pdst) { 3578 match->dissector.used_keys |= 3579 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3580 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3581 offsetof(struct ethtool_rx_flow_key, tp); 3582 } 3583 if (v6_m_spec->tclass) { 3584 match->key.ip.tos = v6_spec->tclass; 3585 match->mask.ip.tos = v6_m_spec->tclass; 3586 match->dissector.used_keys |= 3587 BIT_ULL(FLOW_DISSECTOR_KEY_IP); 3588 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3589 offsetof(struct ethtool_rx_flow_key, ip); 3590 } 3591 } 3592 break; 3593 default: 3594 ethtool_rx_flow_rule_destroy(flow); 3595 return ERR_PTR(-EINVAL); 3596 } 3597 3598 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3599 case TCP_V4_FLOW: 3600 case TCP_V6_FLOW: 3601 match->key.basic.ip_proto = IPPROTO_TCP; 3602 match->mask.basic.ip_proto = 0xff; 3603 break; 3604 case UDP_V4_FLOW: 3605 case UDP_V6_FLOW: 3606 match->key.basic.ip_proto = IPPROTO_UDP; 3607 match->mask.basic.ip_proto = 0xff; 3608 break; 3609 } 3610 3611 match->dissector.used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_BASIC); 3612 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = 3613 offsetof(struct ethtool_rx_flow_key, basic); 3614 3615 if (fs->flow_type & FLOW_EXT) { 3616 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3617 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3618 3619 if (ext_m_spec->vlan_etype) { 3620 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; 3621 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; 3622 } 3623 3624 if (ext_m_spec->vlan_tci) { 3625 match->key.vlan.vlan_id = 3626 ntohs(ext_h_spec->vlan_tci) & 0x0fff; 3627 match->mask.vlan.vlan_id = 3628 ntohs(ext_m_spec->vlan_tci) & 0x0fff; 3629 3630 match->key.vlan.vlan_dei = 3631 !!(ext_h_spec->vlan_tci & htons(0x1000)); 3632 match->mask.vlan.vlan_dei = 3633 !!(ext_m_spec->vlan_tci & htons(0x1000)); 3634 3635 match->key.vlan.vlan_priority = 3636 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; 3637 match->mask.vlan.vlan_priority = 3638 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; 3639 } 3640 3641 if (ext_m_spec->vlan_etype || 3642 ext_m_spec->vlan_tci) { 3643 match->dissector.used_keys |= 3644 BIT_ULL(FLOW_DISSECTOR_KEY_VLAN); 3645 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = 3646 offsetof(struct ethtool_rx_flow_key, vlan); 3647 } 3648 } 3649 if (fs->flow_type & FLOW_MAC_EXT) { 3650 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3651 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3652 3653 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, 3654 ETH_ALEN); 3655 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, 3656 ETH_ALEN); 3657 3658 match->dissector.used_keys |= 3659 BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS); 3660 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = 3661 offsetof(struct ethtool_rx_flow_key, eth_addrs); 3662 } 3663 3664 act = &flow->rule->action.entries[0]; 3665 switch (fs->ring_cookie) { 3666 case RX_CLS_FLOW_DISC: 3667 act->id = FLOW_ACTION_DROP; 3668 break; 3669 case RX_CLS_FLOW_WAKE: 3670 act->id = FLOW_ACTION_WAKE; 3671 break; 3672 default: 3673 act->id = FLOW_ACTION_QUEUE; 3674 if (fs->flow_type & FLOW_RSS) 3675 act->queue.ctx = input->rss_ctx; 3676 3677 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); 3678 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); 3679 break; 3680 } 3681 3682 return flow; 3683 } 3684 EXPORT_SYMBOL(ethtool_rx_flow_rule_create); 3685 3686 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) 3687 { 3688 kfree(flow->rule); 3689 kfree(flow); 3690 } 3691 EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); 3692