1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * net/core/ethtool.c - Ethtool ioctl handler 4 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx> 5 * 6 * This file is where we call all the ethtool_ops commands to get 7 * the information ethtool needs. 8 */ 9 10 #include <linux/compat.h> 11 #include <linux/etherdevice.h> 12 #include <linux/module.h> 13 #include <linux/types.h> 14 #include <linux/capability.h> 15 #include <linux/errno.h> 16 #include <linux/ethtool.h> 17 #include <linux/netdevice.h> 18 #include <linux/net_tstamp.h> 19 #include <linux/phy.h> 20 #include <linux/bitops.h> 21 #include <linux/uaccess.h> 22 #include <linux/vmalloc.h> 23 #include <linux/sfp.h> 24 #include <linux/slab.h> 25 #include <linux/rtnetlink.h> 26 #include <linux/sched/signal.h> 27 #include <linux/net.h> 28 #include <linux/pm_runtime.h> 29 #include <linux/utsname.h> 30 #include <net/devlink.h> 31 #include <net/ipv6.h> 32 #include <net/xdp_sock_drv.h> 33 #include <net/flow_offload.h> 34 #include <linux/ethtool_netlink.h> 35 #include "common.h" 36 37 /* State held across locks and calls for commands which have devlink fallback */ 38 struct ethtool_devlink_compat { 39 struct devlink *devlink; 40 union { 41 struct ethtool_flash efl; 42 struct ethtool_drvinfo info; 43 }; 44 }; 45 46 static struct devlink *netdev_to_devlink_get(struct net_device *dev) 47 { 48 if (!dev->devlink_port) 49 return NULL; 50 return devlink_try_get(dev->devlink_port->devlink); 51 } 52 53 /* 54 * Some useful ethtool_ops methods that're device independent. 55 * If we find that all drivers want to do the same thing here, 56 * we can turn these into dev_() function calls. 57 */ 58 59 u32 ethtool_op_get_link(struct net_device *dev) 60 { 61 /* Synchronize carrier state with link watch, see also rtnl_getlink() */ 62 linkwatch_sync_dev(dev); 63 64 return netif_carrier_ok(dev) ? 1 : 0; 65 } 66 EXPORT_SYMBOL(ethtool_op_get_link); 67 68 int ethtool_op_get_ts_info(struct net_device *dev, 69 struct kernel_ethtool_ts_info *info) 70 { 71 info->so_timestamping = 72 SOF_TIMESTAMPING_TX_SOFTWARE | 73 SOF_TIMESTAMPING_RX_SOFTWARE | 74 SOF_TIMESTAMPING_SOFTWARE; 75 info->phc_index = -1; 76 return 0; 77 } 78 EXPORT_SYMBOL(ethtool_op_get_ts_info); 79 80 /* Handlers for each ethtool command */ 81 82 static int ethtool_get_features(struct net_device *dev, void __user *useraddr) 83 { 84 struct ethtool_gfeatures cmd = { 85 .cmd = ETHTOOL_GFEATURES, 86 .size = ETHTOOL_DEV_FEATURE_WORDS, 87 }; 88 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 89 u32 __user *sizeaddr; 90 u32 copy_size; 91 int i; 92 93 /* in case feature bits run out again */ 94 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); 95 96 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 97 features[i].available = (u32)(dev->hw_features >> (32 * i)); 98 features[i].requested = (u32)(dev->wanted_features >> (32 * i)); 99 features[i].active = (u32)(dev->features >> (32 * i)); 100 features[i].never_changed = 101 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); 102 } 103 104 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); 105 if (get_user(copy_size, sizeaddr)) 106 return -EFAULT; 107 108 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) 109 copy_size = ETHTOOL_DEV_FEATURE_WORDS; 110 111 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 112 return -EFAULT; 113 useraddr += sizeof(cmd); 114 if (copy_to_user(useraddr, features, 115 array_size(copy_size, sizeof(*features)))) 116 return -EFAULT; 117 118 return 0; 119 } 120 121 static int ethtool_set_features(struct net_device *dev, void __user *useraddr) 122 { 123 struct ethtool_sfeatures cmd; 124 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 125 netdev_features_t wanted = 0, valid = 0; 126 int i, ret = 0; 127 128 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 129 return -EFAULT; 130 useraddr += sizeof(cmd); 131 132 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) 133 return -EINVAL; 134 135 if (copy_from_user(features, useraddr, sizeof(features))) 136 return -EFAULT; 137 138 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 139 valid |= (netdev_features_t)features[i].valid << (32 * i); 140 wanted |= (netdev_features_t)features[i].requested << (32 * i); 141 } 142 143 if (valid & ~NETIF_F_ETHTOOL_BITS) 144 return -EINVAL; 145 146 if (valid & ~dev->hw_features) { 147 valid &= dev->hw_features; 148 ret |= ETHTOOL_F_UNSUPPORTED; 149 } 150 151 dev->wanted_features &= ~valid; 152 dev->wanted_features |= wanted & valid; 153 __netdev_update_features(dev); 154 155 if ((dev->wanted_features ^ dev->features) & valid) 156 ret |= ETHTOOL_F_WISH; 157 158 return ret; 159 } 160 161 static int __ethtool_get_sset_count(struct net_device *dev, int sset) 162 { 163 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 164 const struct ethtool_ops *ops = dev->ethtool_ops; 165 166 if (sset == ETH_SS_FEATURES) 167 return ARRAY_SIZE(netdev_features_strings); 168 169 if (sset == ETH_SS_RSS_HASH_FUNCS) 170 return ARRAY_SIZE(rss_hash_func_strings); 171 172 if (sset == ETH_SS_TUNABLES) 173 return ARRAY_SIZE(tunable_strings); 174 175 if (sset == ETH_SS_PHY_TUNABLES) 176 return ARRAY_SIZE(phy_tunable_strings); 177 178 if (sset == ETH_SS_PHY_STATS && dev->phydev && 179 !ops->get_ethtool_phy_stats && 180 phy_ops && phy_ops->get_sset_count) 181 return phy_ops->get_sset_count(dev->phydev); 182 183 if (sset == ETH_SS_LINK_MODES) 184 return __ETHTOOL_LINK_MODE_MASK_NBITS; 185 186 if (ops->get_sset_count && ops->get_strings) 187 return ops->get_sset_count(dev, sset); 188 else 189 return -EOPNOTSUPP; 190 } 191 192 static void __ethtool_get_strings(struct net_device *dev, 193 u32 stringset, u8 *data) 194 { 195 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 196 const struct ethtool_ops *ops = dev->ethtool_ops; 197 198 if (stringset == ETH_SS_FEATURES) 199 memcpy(data, netdev_features_strings, 200 sizeof(netdev_features_strings)); 201 else if (stringset == ETH_SS_RSS_HASH_FUNCS) 202 memcpy(data, rss_hash_func_strings, 203 sizeof(rss_hash_func_strings)); 204 else if (stringset == ETH_SS_TUNABLES) 205 memcpy(data, tunable_strings, sizeof(tunable_strings)); 206 else if (stringset == ETH_SS_PHY_TUNABLES) 207 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); 208 else if (stringset == ETH_SS_PHY_STATS && dev->phydev && 209 !ops->get_ethtool_phy_stats && phy_ops && 210 phy_ops->get_strings) 211 phy_ops->get_strings(dev->phydev, data); 212 else if (stringset == ETH_SS_LINK_MODES) 213 memcpy(data, link_mode_names, 214 __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN); 215 else 216 /* ops->get_strings is valid because checked earlier */ 217 ops->get_strings(dev, stringset, data); 218 } 219 220 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) 221 { 222 /* feature masks of legacy discrete ethtool ops */ 223 224 switch (eth_cmd) { 225 case ETHTOOL_GTXCSUM: 226 case ETHTOOL_STXCSUM: 227 return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC | 228 NETIF_F_SCTP_CRC; 229 case ETHTOOL_GRXCSUM: 230 case ETHTOOL_SRXCSUM: 231 return NETIF_F_RXCSUM; 232 case ETHTOOL_GSG: 233 case ETHTOOL_SSG: 234 return NETIF_F_SG | NETIF_F_FRAGLIST; 235 case ETHTOOL_GTSO: 236 case ETHTOOL_STSO: 237 return NETIF_F_ALL_TSO; 238 case ETHTOOL_GGSO: 239 case ETHTOOL_SGSO: 240 return NETIF_F_GSO; 241 case ETHTOOL_GGRO: 242 case ETHTOOL_SGRO: 243 return NETIF_F_GRO; 244 default: 245 BUG(); 246 } 247 } 248 249 static int ethtool_get_one_feature(struct net_device *dev, 250 char __user *useraddr, u32 ethcmd) 251 { 252 netdev_features_t mask = ethtool_get_feature_mask(ethcmd); 253 struct ethtool_value edata = { 254 .cmd = ethcmd, 255 .data = !!(dev->features & mask), 256 }; 257 258 if (copy_to_user(useraddr, &edata, sizeof(edata))) 259 return -EFAULT; 260 return 0; 261 } 262 263 static int ethtool_set_one_feature(struct net_device *dev, 264 void __user *useraddr, u32 ethcmd) 265 { 266 struct ethtool_value edata; 267 netdev_features_t mask; 268 269 if (copy_from_user(&edata, useraddr, sizeof(edata))) 270 return -EFAULT; 271 272 mask = ethtool_get_feature_mask(ethcmd); 273 mask &= dev->hw_features; 274 if (!mask) 275 return -EOPNOTSUPP; 276 277 if (edata.data) 278 dev->wanted_features |= mask; 279 else 280 dev->wanted_features &= ~mask; 281 282 __netdev_update_features(dev); 283 284 return 0; 285 } 286 287 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ 288 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) 289 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ 290 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ 291 NETIF_F_RXHASH) 292 293 static u32 __ethtool_get_flags(struct net_device *dev) 294 { 295 u32 flags = 0; 296 297 if (dev->features & NETIF_F_LRO) 298 flags |= ETH_FLAG_LRO; 299 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 300 flags |= ETH_FLAG_RXVLAN; 301 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) 302 flags |= ETH_FLAG_TXVLAN; 303 if (dev->features & NETIF_F_NTUPLE) 304 flags |= ETH_FLAG_NTUPLE; 305 if (dev->features & NETIF_F_RXHASH) 306 flags |= ETH_FLAG_RXHASH; 307 308 return flags; 309 } 310 311 static int __ethtool_set_flags(struct net_device *dev, u32 data) 312 { 313 netdev_features_t features = 0, changed; 314 315 if (data & ~ETH_ALL_FLAGS) 316 return -EINVAL; 317 318 if (data & ETH_FLAG_LRO) 319 features |= NETIF_F_LRO; 320 if (data & ETH_FLAG_RXVLAN) 321 features |= NETIF_F_HW_VLAN_CTAG_RX; 322 if (data & ETH_FLAG_TXVLAN) 323 features |= NETIF_F_HW_VLAN_CTAG_TX; 324 if (data & ETH_FLAG_NTUPLE) 325 features |= NETIF_F_NTUPLE; 326 if (data & ETH_FLAG_RXHASH) 327 features |= NETIF_F_RXHASH; 328 329 /* allow changing only bits set in hw_features */ 330 changed = (features ^ dev->features) & ETH_ALL_FEATURES; 331 if (changed & ~dev->hw_features) 332 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; 333 334 dev->wanted_features = 335 (dev->wanted_features & ~changed) | (features & changed); 336 337 __netdev_update_features(dev); 338 339 return 0; 340 } 341 342 /* Given two link masks, AND them together and save the result in dst. */ 343 void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, 344 struct ethtool_link_ksettings *src) 345 { 346 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); 347 unsigned int idx = 0; 348 349 for (; idx < size; idx++) { 350 dst->link_modes.supported[idx] &= 351 src->link_modes.supported[idx]; 352 dst->link_modes.advertising[idx] &= 353 src->link_modes.advertising[idx]; 354 } 355 } 356 EXPORT_SYMBOL(ethtool_intersect_link_masks); 357 358 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, 359 u32 legacy_u32) 360 { 361 linkmode_zero(dst); 362 dst[0] = legacy_u32; 363 } 364 EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); 365 366 /* return false if src had higher bits set. lower bits always updated. */ 367 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, 368 const unsigned long *src) 369 { 370 *legacy_u32 = src[0]; 371 return find_next_bit(src, __ETHTOOL_LINK_MODE_MASK_NBITS, 32) == 372 __ETHTOOL_LINK_MODE_MASK_NBITS; 373 } 374 EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); 375 376 /* return false if ksettings link modes had higher bits 377 * set. legacy_settings always updated (best effort) 378 */ 379 static bool 380 convert_link_ksettings_to_legacy_settings( 381 struct ethtool_cmd *legacy_settings, 382 const struct ethtool_link_ksettings *link_ksettings) 383 { 384 bool retval = true; 385 386 memset(legacy_settings, 0, sizeof(*legacy_settings)); 387 /* this also clears the deprecated fields in legacy structure: 388 * __u8 transceiver; 389 * __u32 maxtxpkt; 390 * __u32 maxrxpkt; 391 */ 392 393 retval &= ethtool_convert_link_mode_to_legacy_u32( 394 &legacy_settings->supported, 395 link_ksettings->link_modes.supported); 396 retval &= ethtool_convert_link_mode_to_legacy_u32( 397 &legacy_settings->advertising, 398 link_ksettings->link_modes.advertising); 399 retval &= ethtool_convert_link_mode_to_legacy_u32( 400 &legacy_settings->lp_advertising, 401 link_ksettings->link_modes.lp_advertising); 402 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); 403 legacy_settings->duplex 404 = link_ksettings->base.duplex; 405 legacy_settings->port 406 = link_ksettings->base.port; 407 legacy_settings->phy_address 408 = link_ksettings->base.phy_address; 409 legacy_settings->autoneg 410 = link_ksettings->base.autoneg; 411 legacy_settings->mdio_support 412 = link_ksettings->base.mdio_support; 413 legacy_settings->eth_tp_mdix 414 = link_ksettings->base.eth_tp_mdix; 415 legacy_settings->eth_tp_mdix_ctrl 416 = link_ksettings->base.eth_tp_mdix_ctrl; 417 legacy_settings->transceiver 418 = link_ksettings->base.transceiver; 419 return retval; 420 } 421 422 /* number of 32-bit words to store the user's link mode bitmaps */ 423 #define __ETHTOOL_LINK_MODE_MASK_NU32 \ 424 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) 425 426 /* layout of the struct passed from/to userland */ 427 struct ethtool_link_usettings { 428 struct ethtool_link_settings base; 429 struct { 430 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; 431 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 432 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 433 } link_modes; 434 }; 435 436 /* Internal kernel helper to query a device ethtool_link_settings. */ 437 int __ethtool_get_link_ksettings(struct net_device *dev, 438 struct ethtool_link_ksettings *link_ksettings) 439 { 440 ASSERT_RTNL(); 441 442 if (!dev->ethtool_ops->get_link_ksettings) 443 return -EOPNOTSUPP; 444 445 if (!netif_device_present(dev)) 446 return -ENODEV; 447 448 memset(link_ksettings, 0, sizeof(*link_ksettings)); 449 return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings); 450 } 451 EXPORT_SYMBOL(__ethtool_get_link_ksettings); 452 453 /* convert ethtool_link_usettings in user space to a kernel internal 454 * ethtool_link_ksettings. return 0 on success, errno on error. 455 */ 456 static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, 457 const void __user *from) 458 { 459 struct ethtool_link_usettings link_usettings; 460 461 if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) 462 return -EFAULT; 463 464 memcpy(&to->base, &link_usettings.base, sizeof(to->base)); 465 bitmap_from_arr32(to->link_modes.supported, 466 link_usettings.link_modes.supported, 467 __ETHTOOL_LINK_MODE_MASK_NBITS); 468 bitmap_from_arr32(to->link_modes.advertising, 469 link_usettings.link_modes.advertising, 470 __ETHTOOL_LINK_MODE_MASK_NBITS); 471 bitmap_from_arr32(to->link_modes.lp_advertising, 472 link_usettings.link_modes.lp_advertising, 473 __ETHTOOL_LINK_MODE_MASK_NBITS); 474 475 return 0; 476 } 477 478 /* Check if the user is trying to change anything besides speed/duplex */ 479 bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd) 480 { 481 struct ethtool_link_settings base2 = {}; 482 483 base2.speed = cmd->base.speed; 484 base2.port = PORT_OTHER; 485 base2.duplex = cmd->base.duplex; 486 base2.cmd = cmd->base.cmd; 487 base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords; 488 489 return !memcmp(&base2, &cmd->base, sizeof(base2)) && 490 bitmap_empty(cmd->link_modes.supported, 491 __ETHTOOL_LINK_MODE_MASK_NBITS) && 492 bitmap_empty(cmd->link_modes.lp_advertising, 493 __ETHTOOL_LINK_MODE_MASK_NBITS); 494 } 495 496 /* convert a kernel internal ethtool_link_ksettings to 497 * ethtool_link_usettings in user space. return 0 on success, errno on 498 * error. 499 */ 500 static int 501 store_link_ksettings_for_user(void __user *to, 502 const struct ethtool_link_ksettings *from) 503 { 504 struct ethtool_link_usettings link_usettings; 505 506 memcpy(&link_usettings, from, sizeof(link_usettings)); 507 bitmap_to_arr32(link_usettings.link_modes.supported, 508 from->link_modes.supported, 509 __ETHTOOL_LINK_MODE_MASK_NBITS); 510 bitmap_to_arr32(link_usettings.link_modes.advertising, 511 from->link_modes.advertising, 512 __ETHTOOL_LINK_MODE_MASK_NBITS); 513 bitmap_to_arr32(link_usettings.link_modes.lp_advertising, 514 from->link_modes.lp_advertising, 515 __ETHTOOL_LINK_MODE_MASK_NBITS); 516 517 if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) 518 return -EFAULT; 519 520 return 0; 521 } 522 523 /* Query device for its ethtool_link_settings. */ 524 static int ethtool_get_link_ksettings(struct net_device *dev, 525 void __user *useraddr) 526 { 527 int err = 0; 528 struct ethtool_link_ksettings link_ksettings; 529 530 ASSERT_RTNL(); 531 if (!dev->ethtool_ops->get_link_ksettings) 532 return -EOPNOTSUPP; 533 534 /* handle bitmap nbits handshake */ 535 if (copy_from_user(&link_ksettings.base, useraddr, 536 sizeof(link_ksettings.base))) 537 return -EFAULT; 538 539 if (__ETHTOOL_LINK_MODE_MASK_NU32 540 != link_ksettings.base.link_mode_masks_nwords) { 541 /* wrong link mode nbits requested */ 542 memset(&link_ksettings, 0, sizeof(link_ksettings)); 543 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 544 /* send back number of words required as negative val */ 545 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, 546 "need too many bits for link modes!"); 547 link_ksettings.base.link_mode_masks_nwords 548 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); 549 550 /* copy the base fields back to user, not the link 551 * mode bitmaps 552 */ 553 if (copy_to_user(useraddr, &link_ksettings.base, 554 sizeof(link_ksettings.base))) 555 return -EFAULT; 556 557 return 0; 558 } 559 560 /* handshake successful: user/kernel agree on 561 * link_mode_masks_nwords 562 */ 563 564 memset(&link_ksettings, 0, sizeof(link_ksettings)); 565 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 566 if (err < 0) 567 return err; 568 569 /* make sure we tell the right values to user */ 570 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 571 link_ksettings.base.link_mode_masks_nwords 572 = __ETHTOOL_LINK_MODE_MASK_NU32; 573 link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED; 574 link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED; 575 link_ksettings.base.rate_matching = RATE_MATCH_NONE; 576 577 return store_link_ksettings_for_user(useraddr, &link_ksettings); 578 } 579 580 /* Update device ethtool_link_settings. */ 581 static int ethtool_set_link_ksettings(struct net_device *dev, 582 void __user *useraddr) 583 { 584 struct ethtool_link_ksettings link_ksettings = {}; 585 int err; 586 587 ASSERT_RTNL(); 588 589 if (!dev->ethtool_ops->set_link_ksettings) 590 return -EOPNOTSUPP; 591 592 /* make sure nbits field has expected value */ 593 if (copy_from_user(&link_ksettings.base, useraddr, 594 sizeof(link_ksettings.base))) 595 return -EFAULT; 596 597 if (__ETHTOOL_LINK_MODE_MASK_NU32 598 != link_ksettings.base.link_mode_masks_nwords) 599 return -EINVAL; 600 601 /* copy the whole structure, now that we know it has expected 602 * format 603 */ 604 err = load_link_ksettings_from_user(&link_ksettings, useraddr); 605 if (err) 606 return err; 607 608 /* re-check nwords field, just in case */ 609 if (__ETHTOOL_LINK_MODE_MASK_NU32 610 != link_ksettings.base.link_mode_masks_nwords) 611 return -EINVAL; 612 613 if (link_ksettings.base.master_slave_cfg || 614 link_ksettings.base.master_slave_state) 615 return -EINVAL; 616 617 err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 618 if (err >= 0) { 619 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); 620 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); 621 } 622 return err; 623 } 624 625 int ethtool_virtdev_set_link_ksettings(struct net_device *dev, 626 const struct ethtool_link_ksettings *cmd, 627 u32 *dev_speed, u8 *dev_duplex) 628 { 629 u32 speed; 630 u8 duplex; 631 632 speed = cmd->base.speed; 633 duplex = cmd->base.duplex; 634 /* don't allow custom speed and duplex */ 635 if (!ethtool_validate_speed(speed) || 636 !ethtool_validate_duplex(duplex) || 637 !ethtool_virtdev_validate_cmd(cmd)) 638 return -EINVAL; 639 *dev_speed = speed; 640 *dev_duplex = duplex; 641 642 return 0; 643 } 644 EXPORT_SYMBOL(ethtool_virtdev_set_link_ksettings); 645 646 /* Query device for its ethtool_cmd settings. 647 * 648 * Backward compatibility note: for compatibility with legacy ethtool, this is 649 * now implemented via get_link_ksettings. When driver reports higher link mode 650 * bits, a kernel warning is logged once (with name of 1st driver/device) to 651 * recommend user to upgrade ethtool, but the command is successful (only the 652 * lower link mode bits reported back to user). Deprecated fields from 653 * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero. 654 */ 655 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) 656 { 657 struct ethtool_link_ksettings link_ksettings; 658 struct ethtool_cmd cmd; 659 int err; 660 661 ASSERT_RTNL(); 662 if (!dev->ethtool_ops->get_link_ksettings) 663 return -EOPNOTSUPP; 664 665 if (dev->ethtool->module_fw_flash_in_progress) 666 return -EBUSY; 667 668 memset(&link_ksettings, 0, sizeof(link_ksettings)); 669 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 670 if (err < 0) 671 return err; 672 convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings); 673 674 /* send a sensible cmd tag back to user */ 675 cmd.cmd = ETHTOOL_GSET; 676 677 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 678 return -EFAULT; 679 680 return 0; 681 } 682 683 /* Update device link settings with given ethtool_cmd. 684 * 685 * Backward compatibility note: for compatibility with legacy ethtool, this is 686 * now always implemented via set_link_settings. When user's request updates 687 * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel 688 * warning is logged once (with name of 1st driver/device) to recommend user to 689 * upgrade ethtool, and the request is rejected. 690 */ 691 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) 692 { 693 struct ethtool_link_ksettings link_ksettings; 694 struct ethtool_cmd cmd; 695 int ret; 696 697 ASSERT_RTNL(); 698 699 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 700 return -EFAULT; 701 if (!dev->ethtool_ops->set_link_ksettings) 702 return -EOPNOTSUPP; 703 704 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd)) 705 return -EINVAL; 706 link_ksettings.base.link_mode_masks_nwords = 707 __ETHTOOL_LINK_MODE_MASK_NU32; 708 ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 709 if (ret >= 0) { 710 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); 711 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); 712 } 713 return ret; 714 } 715 716 static int 717 ethtool_get_drvinfo(struct net_device *dev, struct ethtool_devlink_compat *rsp) 718 { 719 const struct ethtool_ops *ops = dev->ethtool_ops; 720 struct device *parent = dev->dev.parent; 721 722 rsp->info.cmd = ETHTOOL_GDRVINFO; 723 strscpy(rsp->info.version, init_uts_ns.name.release, 724 sizeof(rsp->info.version)); 725 if (ops->get_drvinfo) { 726 ops->get_drvinfo(dev, &rsp->info); 727 if (!rsp->info.bus_info[0] && parent) 728 strscpy(rsp->info.bus_info, dev_name(parent), 729 sizeof(rsp->info.bus_info)); 730 if (!rsp->info.driver[0] && parent && parent->driver) 731 strscpy(rsp->info.driver, parent->driver->name, 732 sizeof(rsp->info.driver)); 733 } else if (parent && parent->driver) { 734 strscpy(rsp->info.bus_info, dev_name(parent), 735 sizeof(rsp->info.bus_info)); 736 strscpy(rsp->info.driver, parent->driver->name, 737 sizeof(rsp->info.driver)); 738 } else if (dev->rtnl_link_ops) { 739 strscpy(rsp->info.driver, dev->rtnl_link_ops->kind, 740 sizeof(rsp->info.driver)); 741 } else { 742 return -EOPNOTSUPP; 743 } 744 745 /* 746 * this method of obtaining string set info is deprecated; 747 * Use ETHTOOL_GSSET_INFO instead. 748 */ 749 if (ops->get_sset_count) { 750 int rc; 751 752 rc = ops->get_sset_count(dev, ETH_SS_TEST); 753 if (rc >= 0) 754 rsp->info.testinfo_len = rc; 755 rc = ops->get_sset_count(dev, ETH_SS_STATS); 756 if (rc >= 0) 757 rsp->info.n_stats = rc; 758 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); 759 if (rc >= 0) 760 rsp->info.n_priv_flags = rc; 761 } 762 if (ops->get_regs_len) { 763 int ret = ops->get_regs_len(dev); 764 765 if (ret > 0) 766 rsp->info.regdump_len = ret; 767 } 768 769 if (ops->get_eeprom_len) 770 rsp->info.eedump_len = ops->get_eeprom_len(dev); 771 772 if (!rsp->info.fw_version[0]) 773 rsp->devlink = netdev_to_devlink_get(dev); 774 775 return 0; 776 } 777 778 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, 779 void __user *useraddr) 780 { 781 struct ethtool_sset_info info; 782 u64 sset_mask; 783 int i, idx = 0, n_bits = 0, ret, rc; 784 u32 *info_buf = NULL; 785 786 if (copy_from_user(&info, useraddr, sizeof(info))) 787 return -EFAULT; 788 789 /* store copy of mask, because we zero struct later on */ 790 sset_mask = info.sset_mask; 791 if (!sset_mask) 792 return 0; 793 794 /* calculate size of return buffer */ 795 n_bits = hweight64(sset_mask); 796 797 memset(&info, 0, sizeof(info)); 798 info.cmd = ETHTOOL_GSSET_INFO; 799 800 info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER); 801 if (!info_buf) 802 return -ENOMEM; 803 804 /* 805 * fill return buffer based on input bitmask and successful 806 * get_sset_count return 807 */ 808 for (i = 0; i < 64; i++) { 809 if (!(sset_mask & (1ULL << i))) 810 continue; 811 812 rc = __ethtool_get_sset_count(dev, i); 813 if (rc >= 0) { 814 info.sset_mask |= (1ULL << i); 815 info_buf[idx++] = rc; 816 } 817 } 818 819 ret = -EFAULT; 820 if (copy_to_user(useraddr, &info, sizeof(info))) 821 goto out; 822 823 useraddr += offsetof(struct ethtool_sset_info, data); 824 if (copy_to_user(useraddr, info_buf, array_size(idx, sizeof(u32)))) 825 goto out; 826 827 ret = 0; 828 829 out: 830 kfree(info_buf); 831 return ret; 832 } 833 834 static noinline_for_stack int 835 ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc, 836 const struct compat_ethtool_rxnfc __user *useraddr, 837 size_t size) 838 { 839 struct compat_ethtool_rxnfc crxnfc = {}; 840 841 /* We expect there to be holes between fs.m_ext and 842 * fs.ring_cookie and at the end of fs, but nowhere else. 843 * On non-x86, no conversion should be needed. 844 */ 845 BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) && 846 sizeof(struct compat_ethtool_rxnfc) != 847 sizeof(struct ethtool_rxnfc)); 848 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) + 849 sizeof(useraddr->fs.m_ext) != 850 offsetof(struct ethtool_rxnfc, fs.m_ext) + 851 sizeof(rxnfc->fs.m_ext)); 852 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) - 853 offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) != 854 offsetof(struct ethtool_rxnfc, fs.location) - 855 offsetof(struct ethtool_rxnfc, fs.ring_cookie)); 856 857 if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc)))) 858 return -EFAULT; 859 860 *rxnfc = (struct ethtool_rxnfc) { 861 .cmd = crxnfc.cmd, 862 .flow_type = crxnfc.flow_type, 863 .data = crxnfc.data, 864 .fs = { 865 .flow_type = crxnfc.fs.flow_type, 866 .h_u = crxnfc.fs.h_u, 867 .h_ext = crxnfc.fs.h_ext, 868 .m_u = crxnfc.fs.m_u, 869 .m_ext = crxnfc.fs.m_ext, 870 .ring_cookie = crxnfc.fs.ring_cookie, 871 .location = crxnfc.fs.location, 872 }, 873 .rule_cnt = crxnfc.rule_cnt, 874 }; 875 876 return 0; 877 } 878 879 static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc, 880 const void __user *useraddr, 881 size_t size) 882 { 883 if (compat_need_64bit_alignment_fixup()) 884 return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size); 885 886 if (copy_from_user(rxnfc, useraddr, size)) 887 return -EFAULT; 888 889 return 0; 890 } 891 892 static int ethtool_rxnfc_copy_to_compat(void __user *useraddr, 893 const struct ethtool_rxnfc *rxnfc, 894 size_t size, const u32 *rule_buf) 895 { 896 struct compat_ethtool_rxnfc crxnfc; 897 898 memset(&crxnfc, 0, sizeof(crxnfc)); 899 crxnfc = (struct compat_ethtool_rxnfc) { 900 .cmd = rxnfc->cmd, 901 .flow_type = rxnfc->flow_type, 902 .data = rxnfc->data, 903 .fs = { 904 .flow_type = rxnfc->fs.flow_type, 905 .h_u = rxnfc->fs.h_u, 906 .h_ext = rxnfc->fs.h_ext, 907 .m_u = rxnfc->fs.m_u, 908 .m_ext = rxnfc->fs.m_ext, 909 .ring_cookie = rxnfc->fs.ring_cookie, 910 .location = rxnfc->fs.location, 911 }, 912 .rule_cnt = rxnfc->rule_cnt, 913 }; 914 915 if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc)))) 916 return -EFAULT; 917 918 return 0; 919 } 920 921 static int ethtool_rxnfc_copy_struct(u32 cmd, struct ethtool_rxnfc *info, 922 size_t *info_size, void __user *useraddr) 923 { 924 /* struct ethtool_rxnfc was originally defined for 925 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 926 * members. User-space might still be using that 927 * definition. 928 */ 929 if (cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) 930 *info_size = (offsetof(struct ethtool_rxnfc, data) + 931 sizeof(info->data)); 932 933 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) 934 return -EFAULT; 935 936 if ((cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) && info->flow_type & FLOW_RSS) { 937 *info_size = sizeof(*info); 938 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) 939 return -EFAULT; 940 /* Since malicious users may modify the original data, 941 * we need to check whether FLOW_RSS is still requested. 942 */ 943 if (!(info->flow_type & FLOW_RSS)) 944 return -EINVAL; 945 } 946 947 if (info->cmd != cmd) 948 return -EINVAL; 949 950 return 0; 951 } 952 953 static int ethtool_rxnfc_copy_to_user(void __user *useraddr, 954 const struct ethtool_rxnfc *rxnfc, 955 size_t size, const u32 *rule_buf) 956 { 957 int ret; 958 959 if (compat_need_64bit_alignment_fixup()) { 960 ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size, 961 rule_buf); 962 useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs); 963 } else { 964 ret = copy_to_user(useraddr, rxnfc, size); 965 useraddr += offsetof(struct ethtool_rxnfc, rule_locs); 966 } 967 968 if (ret) 969 return -EFAULT; 970 971 if (rule_buf) { 972 if (copy_to_user(useraddr, rule_buf, 973 rxnfc->rule_cnt * sizeof(u32))) 974 return -EFAULT; 975 } 976 977 return 0; 978 } 979 980 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, 981 u32 cmd, void __user *useraddr) 982 { 983 const struct ethtool_ops *ops = dev->ethtool_ops; 984 struct ethtool_rxnfc info; 985 size_t info_size = sizeof(info); 986 int rc; 987 988 if (!ops->set_rxnfc) 989 return -EOPNOTSUPP; 990 991 rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 992 if (rc) 993 return rc; 994 995 /* Nonzero ring with RSS only makes sense if NIC adds them together */ 996 if (cmd == ETHTOOL_SRXCLSRLINS && info.flow_type & FLOW_RSS && 997 !ops->cap_rss_rxnfc_adds && 998 ethtool_get_flow_spec_ring(info.fs.ring_cookie)) 999 return -EINVAL; 1000 1001 if (ops->get_rxfh) { 1002 struct ethtool_rxfh_param rxfh = {}; 1003 1004 rc = ops->get_rxfh(dev, &rxfh); 1005 if (rc) 1006 return rc; 1007 1008 /* Sanity check: if symmetric-xor is set, then: 1009 * 1 - no other fields besides IP src/dst and/or L4 src/dst 1010 * 2 - If src is set, dst must also be set 1011 */ 1012 if ((rxfh.input_xfrm & RXH_XFRM_SYM_XOR) && 1013 ((info.data & ~(RXH_IP_SRC | RXH_IP_DST | 1014 RXH_L4_B_0_1 | RXH_L4_B_2_3)) || 1015 (!!(info.data & RXH_IP_SRC) ^ !!(info.data & RXH_IP_DST)) || 1016 (!!(info.data & RXH_L4_B_0_1) ^ !!(info.data & RXH_L4_B_2_3)))) 1017 return -EINVAL; 1018 } 1019 1020 rc = ops->set_rxnfc(dev, &info); 1021 if (rc) 1022 return rc; 1023 1024 if (cmd == ETHTOOL_SRXCLSRLINS && 1025 ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL)) 1026 return -EFAULT; 1027 1028 return 0; 1029 } 1030 1031 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, 1032 u32 cmd, void __user *useraddr) 1033 { 1034 struct ethtool_rxnfc info; 1035 size_t info_size = sizeof(info); 1036 const struct ethtool_ops *ops = dev->ethtool_ops; 1037 int ret; 1038 void *rule_buf = NULL; 1039 1040 if (!ops->get_rxnfc) 1041 return -EOPNOTSUPP; 1042 1043 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1044 if (ret) 1045 return ret; 1046 1047 if (info.cmd == ETHTOOL_GRXCLSRLALL) { 1048 if (info.rule_cnt > 0) { 1049 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) 1050 rule_buf = kcalloc(info.rule_cnt, sizeof(u32), 1051 GFP_USER); 1052 if (!rule_buf) 1053 return -ENOMEM; 1054 } 1055 } 1056 1057 ret = ops->get_rxnfc(dev, &info, rule_buf); 1058 if (ret < 0) 1059 goto err_out; 1060 1061 ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf); 1062 err_out: 1063 kfree(rule_buf); 1064 1065 return ret; 1066 } 1067 1068 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, 1069 struct ethtool_rxnfc *rx_rings, 1070 u32 size) 1071 { 1072 int i; 1073 1074 if (copy_from_user(indir, useraddr, array_size(size, sizeof(indir[0])))) 1075 return -EFAULT; 1076 1077 /* Validate ring indices */ 1078 for (i = 0; i < size; i++) 1079 if (indir[i] >= rx_rings->data) 1080 return -EINVAL; 1081 1082 return 0; 1083 } 1084 1085 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; 1086 1087 void netdev_rss_key_fill(void *buffer, size_t len) 1088 { 1089 BUG_ON(len > sizeof(netdev_rss_key)); 1090 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); 1091 memcpy(buffer, netdev_rss_key, len); 1092 } 1093 EXPORT_SYMBOL(netdev_rss_key_fill); 1094 1095 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, 1096 void __user *useraddr) 1097 { 1098 struct ethtool_rxfh_param rxfh = {}; 1099 u32 user_size; 1100 int ret; 1101 1102 if (!dev->ethtool_ops->get_rxfh_indir_size || 1103 !dev->ethtool_ops->get_rxfh) 1104 return -EOPNOTSUPP; 1105 rxfh.indir_size = dev->ethtool_ops->get_rxfh_indir_size(dev); 1106 if (rxfh.indir_size == 0) 1107 return -EOPNOTSUPP; 1108 1109 if (copy_from_user(&user_size, 1110 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1111 sizeof(user_size))) 1112 return -EFAULT; 1113 1114 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), 1115 &rxfh.indir_size, sizeof(rxfh.indir_size))) 1116 return -EFAULT; 1117 1118 /* If the user buffer size is 0, this is just a query for the 1119 * device table size. Otherwise, if it's smaller than the 1120 * device table size it's an error. 1121 */ 1122 if (user_size < rxfh.indir_size) 1123 return user_size == 0 ? 0 : -EINVAL; 1124 1125 rxfh.indir = kcalloc(rxfh.indir_size, sizeof(rxfh.indir[0]), GFP_USER); 1126 if (!rxfh.indir) 1127 return -ENOMEM; 1128 1129 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh); 1130 if (ret) 1131 goto out; 1132 if (copy_to_user(useraddr + 1133 offsetof(struct ethtool_rxfh_indir, ring_index[0]), 1134 rxfh.indir, rxfh.indir_size * sizeof(*rxfh.indir))) 1135 ret = -EFAULT; 1136 1137 out: 1138 kfree(rxfh.indir); 1139 return ret; 1140 } 1141 1142 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, 1143 void __user *useraddr) 1144 { 1145 const struct ethtool_ops *ops = dev->ethtool_ops; 1146 struct ethtool_rxfh_param rxfh_dev = {}; 1147 struct netlink_ext_ack *extack = NULL; 1148 struct ethtool_rxnfc rx_rings; 1149 u32 user_size, i; 1150 int ret; 1151 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); 1152 1153 if (!ops->get_rxfh_indir_size || !ops->set_rxfh || 1154 !ops->get_rxnfc) 1155 return -EOPNOTSUPP; 1156 1157 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1158 if (rxfh_dev.indir_size == 0) 1159 return -EOPNOTSUPP; 1160 1161 if (copy_from_user(&user_size, 1162 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1163 sizeof(user_size))) 1164 return -EFAULT; 1165 1166 if (user_size != 0 && user_size != rxfh_dev.indir_size) 1167 return -EINVAL; 1168 1169 rxfh_dev.indir = kcalloc(rxfh_dev.indir_size, 1170 sizeof(rxfh_dev.indir[0]), GFP_USER); 1171 if (!rxfh_dev.indir) 1172 return -ENOMEM; 1173 1174 rx_rings.cmd = ETHTOOL_GRXRINGS; 1175 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1176 if (ret) 1177 goto out; 1178 1179 if (user_size == 0) { 1180 u32 *indir = rxfh_dev.indir; 1181 1182 for (i = 0; i < rxfh_dev.indir_size; i++) 1183 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1184 } else { 1185 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1186 useraddr + ringidx_offset, 1187 &rx_rings, 1188 rxfh_dev.indir_size); 1189 if (ret) 1190 goto out; 1191 } 1192 1193 rxfh_dev.hfunc = ETH_RSS_HASH_NO_CHANGE; 1194 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1195 if (ret) 1196 goto out; 1197 1198 /* indicate whether rxfh was set to default */ 1199 if (user_size == 0) 1200 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1201 else 1202 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1203 1204 out: 1205 kfree(rxfh_dev.indir); 1206 return ret; 1207 } 1208 1209 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, 1210 void __user *useraddr) 1211 { 1212 const struct ethtool_ops *ops = dev->ethtool_ops; 1213 struct ethtool_rxfh_param rxfh_dev = {}; 1214 u32 user_indir_size, user_key_size; 1215 struct ethtool_rxfh_context *ctx; 1216 struct ethtool_rxfh rxfh; 1217 u32 indir_bytes; 1218 u8 *rss_config; 1219 u32 total_size; 1220 int ret; 1221 1222 if (!ops->get_rxfh) 1223 return -EOPNOTSUPP; 1224 1225 if (ops->get_rxfh_indir_size) 1226 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1227 if (ops->get_rxfh_key_size) 1228 rxfh_dev.key_size = ops->get_rxfh_key_size(dev); 1229 1230 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1231 return -EFAULT; 1232 user_indir_size = rxfh.indir_size; 1233 user_key_size = rxfh.key_size; 1234 1235 /* Check that reserved fields are 0 for now */ 1236 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1237 return -EINVAL; 1238 /* Most drivers don't handle rss_context, check it's 0 as well */ 1239 if (rxfh.rss_context && !(ops->cap_rss_ctx_supported || 1240 ops->create_rxfh_context)) 1241 return -EOPNOTSUPP; 1242 1243 rxfh.indir_size = rxfh_dev.indir_size; 1244 rxfh.key_size = rxfh_dev.key_size; 1245 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) 1246 return -EFAULT; 1247 1248 if ((user_indir_size && user_indir_size != rxfh_dev.indir_size) || 1249 (user_key_size && user_key_size != rxfh_dev.key_size)) 1250 return -EINVAL; 1251 1252 indir_bytes = user_indir_size * sizeof(rxfh_dev.indir[0]); 1253 total_size = indir_bytes + user_key_size; 1254 rss_config = kzalloc(total_size, GFP_USER); 1255 if (!rss_config) 1256 return -ENOMEM; 1257 1258 if (user_indir_size) 1259 rxfh_dev.indir = (u32 *)rss_config; 1260 1261 if (user_key_size) 1262 rxfh_dev.key = rss_config + indir_bytes; 1263 1264 if (rxfh.rss_context) { 1265 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1266 if (!ctx) { 1267 ret = -ENOENT; 1268 goto out; 1269 } 1270 if (rxfh_dev.indir) 1271 memcpy(rxfh_dev.indir, ethtool_rxfh_context_indir(ctx), 1272 indir_bytes); 1273 if (!ops->rxfh_per_ctx_key) { 1274 rxfh_dev.key_size = 0; 1275 } else { 1276 if (rxfh_dev.key) 1277 memcpy(rxfh_dev.key, 1278 ethtool_rxfh_context_key(ctx), 1279 user_key_size); 1280 rxfh_dev.hfunc = ctx->hfunc; 1281 } 1282 rxfh_dev.input_xfrm = ctx->input_xfrm; 1283 ret = 0; 1284 } else { 1285 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh_dev); 1286 if (ret) 1287 goto out; 1288 } 1289 1290 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), 1291 &rxfh_dev.hfunc, sizeof(rxfh.hfunc))) { 1292 ret = -EFAULT; 1293 } else if (copy_to_user(useraddr + 1294 offsetof(struct ethtool_rxfh, input_xfrm), 1295 &rxfh_dev.input_xfrm, 1296 sizeof(rxfh.input_xfrm))) { 1297 ret = -EFAULT; 1298 } else if (copy_to_user(useraddr + 1299 offsetof(struct ethtool_rxfh, key_size), 1300 &rxfh_dev.key_size, 1301 sizeof(rxfh.key_size))) { 1302 ret = -EFAULT; 1303 } else if (copy_to_user(useraddr + 1304 offsetof(struct ethtool_rxfh, rss_config[0]), 1305 rss_config, total_size)) { 1306 ret = -EFAULT; 1307 } 1308 out: 1309 kfree(rss_config); 1310 1311 return ret; 1312 } 1313 1314 static struct ethtool_rxfh_context * 1315 ethtool_rxfh_ctx_alloc(const struct ethtool_ops *ops, 1316 u32 indir_size, u32 key_size) 1317 { 1318 size_t indir_bytes, flex_len, key_off, size; 1319 struct ethtool_rxfh_context *ctx; 1320 u32 priv_bytes, indir_max; 1321 u16 key_max; 1322 1323 key_max = max(key_size, ops->rxfh_key_space); 1324 indir_max = max(indir_size, ops->rxfh_indir_space); 1325 1326 priv_bytes = ALIGN(ops->rxfh_priv_size, sizeof(u32)); 1327 indir_bytes = array_size(indir_max, sizeof(u32)); 1328 1329 key_off = size_add(priv_bytes, indir_bytes); 1330 flex_len = size_add(key_off, key_max); 1331 size = struct_size_t(struct ethtool_rxfh_context, data, flex_len); 1332 1333 ctx = kzalloc(size, GFP_KERNEL_ACCOUNT); 1334 if (!ctx) 1335 return NULL; 1336 1337 ctx->indir_size = indir_size; 1338 ctx->key_size = key_size; 1339 ctx->key_off = key_off; 1340 ctx->priv_size = ops->rxfh_priv_size; 1341 1342 ctx->hfunc = ETH_RSS_HASH_NO_CHANGE; 1343 ctx->input_xfrm = RXH_XFRM_NO_CHANGE; 1344 1345 return ctx; 1346 } 1347 1348 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, 1349 void __user *useraddr) 1350 { 1351 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); 1352 const struct ethtool_ops *ops = dev->ethtool_ops; 1353 u32 dev_indir_size = 0, dev_key_size = 0, i; 1354 u32 user_indir_len = 0, indir_bytes = 0; 1355 struct ethtool_rxfh_param rxfh_dev = {}; 1356 struct ethtool_rxfh_context *ctx = NULL; 1357 struct netlink_ext_ack *extack = NULL; 1358 struct ethtool_rxnfc rx_rings; 1359 struct ethtool_rxfh rxfh; 1360 bool locked = false; /* dev->ethtool->rss_lock taken */ 1361 bool create = false; 1362 u8 *rss_config; 1363 int ret; 1364 1365 if (!ops->get_rxnfc || !ops->set_rxfh) 1366 return -EOPNOTSUPP; 1367 1368 if (ops->get_rxfh_indir_size) 1369 dev_indir_size = ops->get_rxfh_indir_size(dev); 1370 if (ops->get_rxfh_key_size) 1371 dev_key_size = ops->get_rxfh_key_size(dev); 1372 1373 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1374 return -EFAULT; 1375 1376 /* Check that reserved fields are 0 for now */ 1377 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1378 return -EINVAL; 1379 /* Most drivers don't handle rss_context, check it's 0 as well */ 1380 if (rxfh.rss_context && !(ops->cap_rss_ctx_supported || 1381 ops->create_rxfh_context)) 1382 return -EOPNOTSUPP; 1383 /* Check input data transformation capabilities */ 1384 if (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_SYM_XOR && 1385 rxfh.input_xfrm != RXH_XFRM_NO_CHANGE) 1386 return -EINVAL; 1387 if (rxfh.input_xfrm != RXH_XFRM_NO_CHANGE && 1388 (rxfh.input_xfrm & RXH_XFRM_SYM_XOR) && 1389 !ops->cap_rss_sym_xor_supported) 1390 return -EOPNOTSUPP; 1391 create = rxfh.rss_context == ETH_RXFH_CONTEXT_ALLOC; 1392 1393 if ((rxfh.indir_size && 1394 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && 1395 rxfh.indir_size != dev_indir_size) || 1396 (rxfh.key_size && rxfh.key_size != dev_key_size)) 1397 return -EINVAL; 1398 1399 /* Must request at least one change: indir size, hash key, function 1400 * or input transformation. 1401 * There's no need for any of it in case of context creation. 1402 */ 1403 if (!create && 1404 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && 1405 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE && 1406 rxfh.input_xfrm == RXH_XFRM_NO_CHANGE)) 1407 return -EINVAL; 1408 1409 indir_bytes = dev_indir_size * sizeof(rxfh_dev.indir[0]); 1410 1411 /* Check settings which may be global rather than per RSS-context */ 1412 if (rxfh.rss_context && !ops->rxfh_per_ctx_key) 1413 if (rxfh.key_size || 1414 (rxfh.hfunc && rxfh.hfunc != ETH_RSS_HASH_NO_CHANGE) || 1415 (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_NO_CHANGE)) 1416 return -EOPNOTSUPP; 1417 1418 rss_config = kzalloc(indir_bytes + dev_key_size, GFP_USER); 1419 if (!rss_config) 1420 return -ENOMEM; 1421 1422 rx_rings.cmd = ETHTOOL_GRXRINGS; 1423 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1424 if (ret) 1425 goto out; 1426 1427 /* rxfh.indir_size == 0 means reset the indir table to default (master 1428 * context) or delete the context (other RSS contexts). 1429 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. 1430 */ 1431 if (rxfh.indir_size && 1432 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { 1433 user_indir_len = indir_bytes; 1434 rxfh_dev.indir = (u32 *)rss_config; 1435 rxfh_dev.indir_size = dev_indir_size; 1436 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1437 useraddr + rss_cfg_offset, 1438 &rx_rings, 1439 rxfh.indir_size); 1440 if (ret) 1441 goto out; 1442 } else if (rxfh.indir_size == 0) { 1443 if (rxfh.rss_context == 0) { 1444 u32 *indir; 1445 1446 rxfh_dev.indir = (u32 *)rss_config; 1447 rxfh_dev.indir_size = dev_indir_size; 1448 indir = rxfh_dev.indir; 1449 for (i = 0; i < dev_indir_size; i++) 1450 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1451 } else { 1452 rxfh_dev.rss_delete = true; 1453 } 1454 } 1455 1456 if (rxfh.key_size) { 1457 rxfh_dev.key_size = dev_key_size; 1458 rxfh_dev.key = rss_config + indir_bytes; 1459 if (copy_from_user(rxfh_dev.key, 1460 useraddr + rss_cfg_offset + user_indir_len, 1461 rxfh.key_size)) { 1462 ret = -EFAULT; 1463 goto out; 1464 } 1465 } 1466 1467 if (rxfh.rss_context) { 1468 mutex_lock(&dev->ethtool->rss_lock); 1469 locked = true; 1470 } 1471 1472 if (rxfh.rss_context && rxfh_dev.rss_delete) { 1473 ret = ethtool_check_rss_ctx_busy(dev, rxfh.rss_context); 1474 if (ret) 1475 goto out; 1476 } 1477 1478 if (create) { 1479 if (rxfh_dev.rss_delete) { 1480 ret = -EINVAL; 1481 goto out; 1482 } 1483 ctx = ethtool_rxfh_ctx_alloc(ops, dev_indir_size, dev_key_size); 1484 if (!ctx) { 1485 ret = -ENOMEM; 1486 goto out; 1487 } 1488 1489 if (ops->create_rxfh_context) { 1490 u32 limit = ops->rxfh_max_num_contexts ?: U32_MAX; 1491 u32 ctx_id; 1492 1493 /* driver uses new API, core allocates ID */ 1494 ret = xa_alloc(&dev->ethtool->rss_ctx, &ctx_id, ctx, 1495 XA_LIMIT(1, limit - 1), 1496 GFP_KERNEL_ACCOUNT); 1497 if (ret < 0) { 1498 kfree(ctx); 1499 goto out; 1500 } 1501 WARN_ON(!ctx_id); /* can't happen */ 1502 rxfh.rss_context = ctx_id; 1503 } 1504 } else if (rxfh.rss_context) { 1505 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1506 if (!ctx) { 1507 ret = -ENOENT; 1508 goto out; 1509 } 1510 } 1511 rxfh_dev.hfunc = rxfh.hfunc; 1512 rxfh_dev.rss_context = rxfh.rss_context; 1513 rxfh_dev.input_xfrm = rxfh.input_xfrm; 1514 1515 if (rxfh.rss_context && ops->create_rxfh_context) { 1516 if (create) { 1517 ret = ops->create_rxfh_context(dev, ctx, &rxfh_dev, 1518 extack); 1519 /* Make sure driver populates defaults */ 1520 WARN_ON_ONCE(!ret && !rxfh_dev.key && 1521 ops->rxfh_per_ctx_key && 1522 !memchr_inv(ethtool_rxfh_context_key(ctx), 1523 0, ctx->key_size)); 1524 } else if (rxfh_dev.rss_delete) { 1525 ret = ops->remove_rxfh_context(dev, ctx, 1526 rxfh.rss_context, 1527 extack); 1528 } else { 1529 ret = ops->modify_rxfh_context(dev, ctx, &rxfh_dev, 1530 extack); 1531 } 1532 } else { 1533 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1534 } 1535 if (ret) { 1536 if (create) { 1537 /* failed to create, free our new tracking entry */ 1538 if (ops->create_rxfh_context) 1539 xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context); 1540 kfree(ctx); 1541 } 1542 goto out; 1543 } 1544 1545 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), 1546 &rxfh_dev.rss_context, sizeof(rxfh_dev.rss_context))) 1547 ret = -EFAULT; 1548 1549 if (!rxfh_dev.rss_context) { 1550 /* indicate whether rxfh was set to default */ 1551 if (rxfh.indir_size == 0) 1552 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1553 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1554 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1555 } 1556 /* Update rss_ctx tracking */ 1557 if (create && !ops->create_rxfh_context) { 1558 /* driver uses old API, it chose context ID */ 1559 if (WARN_ON(xa_load(&dev->ethtool->rss_ctx, rxfh_dev.rss_context))) { 1560 /* context ID reused, our tracking is screwed */ 1561 kfree(ctx); 1562 goto out; 1563 } 1564 /* Allocate the exact ID the driver gave us */ 1565 if (xa_is_err(xa_store(&dev->ethtool->rss_ctx, rxfh_dev.rss_context, 1566 ctx, GFP_KERNEL))) { 1567 kfree(ctx); 1568 goto out; 1569 } 1570 1571 /* Fetch the defaults for the old API, in the new API drivers 1572 * should write defaults into ctx themselves. 1573 */ 1574 rxfh_dev.indir = (u32 *)rss_config; 1575 rxfh_dev.indir_size = dev_indir_size; 1576 1577 rxfh_dev.key = rss_config + indir_bytes; 1578 rxfh_dev.key_size = dev_key_size; 1579 1580 ret = ops->get_rxfh(dev, &rxfh_dev); 1581 if (WARN_ON(ret)) { 1582 xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context); 1583 kfree(ctx); 1584 goto out; 1585 } 1586 } 1587 if (rxfh_dev.rss_delete) { 1588 WARN_ON(xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context) != ctx); 1589 kfree(ctx); 1590 } else if (ctx) { 1591 if (rxfh_dev.indir) { 1592 for (i = 0; i < dev_indir_size; i++) 1593 ethtool_rxfh_context_indir(ctx)[i] = rxfh_dev.indir[i]; 1594 ctx->indir_configured = 1595 rxfh.indir_size && 1596 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE; 1597 } 1598 if (rxfh_dev.key) { 1599 memcpy(ethtool_rxfh_context_key(ctx), rxfh_dev.key, 1600 dev_key_size); 1601 ctx->key_configured = !!rxfh.key_size; 1602 } 1603 if (rxfh_dev.hfunc != ETH_RSS_HASH_NO_CHANGE) 1604 ctx->hfunc = rxfh_dev.hfunc; 1605 if (rxfh_dev.input_xfrm != RXH_XFRM_NO_CHANGE) 1606 ctx->input_xfrm = rxfh_dev.input_xfrm; 1607 } 1608 1609 out: 1610 if (locked) 1611 mutex_unlock(&dev->ethtool->rss_lock); 1612 kfree(rss_config); 1613 return ret; 1614 } 1615 1616 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) 1617 { 1618 struct ethtool_regs regs; 1619 const struct ethtool_ops *ops = dev->ethtool_ops; 1620 void *regbuf; 1621 int reglen, ret; 1622 1623 if (!ops->get_regs || !ops->get_regs_len) 1624 return -EOPNOTSUPP; 1625 1626 if (copy_from_user(®s, useraddr, sizeof(regs))) 1627 return -EFAULT; 1628 1629 reglen = ops->get_regs_len(dev); 1630 if (reglen <= 0) 1631 return reglen; 1632 1633 if (regs.len > reglen) 1634 regs.len = reglen; 1635 1636 regbuf = vzalloc(reglen); 1637 if (!regbuf) 1638 return -ENOMEM; 1639 1640 if (regs.len < reglen) 1641 reglen = regs.len; 1642 1643 ops->get_regs(dev, ®s, regbuf); 1644 1645 ret = -EFAULT; 1646 if (copy_to_user(useraddr, ®s, sizeof(regs))) 1647 goto out; 1648 useraddr += offsetof(struct ethtool_regs, data); 1649 if (copy_to_user(useraddr, regbuf, reglen)) 1650 goto out; 1651 ret = 0; 1652 1653 out: 1654 vfree(regbuf); 1655 return ret; 1656 } 1657 1658 static int ethtool_reset(struct net_device *dev, char __user *useraddr) 1659 { 1660 struct ethtool_value reset; 1661 int ret; 1662 1663 if (!dev->ethtool_ops->reset) 1664 return -EOPNOTSUPP; 1665 1666 if (dev->ethtool->module_fw_flash_in_progress) 1667 return -EBUSY; 1668 1669 if (copy_from_user(&reset, useraddr, sizeof(reset))) 1670 return -EFAULT; 1671 1672 ret = dev->ethtool_ops->reset(dev, &reset.data); 1673 if (ret) 1674 return ret; 1675 1676 if (copy_to_user(useraddr, &reset, sizeof(reset))) 1677 return -EFAULT; 1678 return 0; 1679 } 1680 1681 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) 1682 { 1683 struct ethtool_wolinfo wol; 1684 1685 if (!dev->ethtool_ops->get_wol) 1686 return -EOPNOTSUPP; 1687 1688 memset(&wol, 0, sizeof(struct ethtool_wolinfo)); 1689 wol.cmd = ETHTOOL_GWOL; 1690 dev->ethtool_ops->get_wol(dev, &wol); 1691 1692 if (copy_to_user(useraddr, &wol, sizeof(wol))) 1693 return -EFAULT; 1694 return 0; 1695 } 1696 1697 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) 1698 { 1699 struct ethtool_wolinfo wol, cur_wol; 1700 int ret; 1701 1702 if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol) 1703 return -EOPNOTSUPP; 1704 1705 memset(&cur_wol, 0, sizeof(struct ethtool_wolinfo)); 1706 cur_wol.cmd = ETHTOOL_GWOL; 1707 dev->ethtool_ops->get_wol(dev, &cur_wol); 1708 1709 if (copy_from_user(&wol, useraddr, sizeof(wol))) 1710 return -EFAULT; 1711 1712 if (wol.wolopts & ~cur_wol.supported) 1713 return -EINVAL; 1714 1715 if (wol.wolopts == cur_wol.wolopts && 1716 !memcmp(wol.sopass, cur_wol.sopass, sizeof(wol.sopass))) 1717 return 0; 1718 1719 ret = dev->ethtool_ops->set_wol(dev, &wol); 1720 if (ret) 1721 return ret; 1722 1723 dev->ethtool->wol_enabled = !!wol.wolopts; 1724 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL); 1725 1726 return 0; 1727 } 1728 1729 static void eee_to_keee(struct ethtool_keee *keee, 1730 const struct ethtool_eee *eee) 1731 { 1732 memset(keee, 0, sizeof(*keee)); 1733 1734 keee->eee_enabled = eee->eee_enabled; 1735 keee->tx_lpi_enabled = eee->tx_lpi_enabled; 1736 keee->tx_lpi_timer = eee->tx_lpi_timer; 1737 1738 ethtool_convert_legacy_u32_to_link_mode(keee->advertised, 1739 eee->advertised); 1740 } 1741 1742 static void keee_to_eee(struct ethtool_eee *eee, 1743 const struct ethtool_keee *keee) 1744 { 1745 bool overflow; 1746 1747 memset(eee, 0, sizeof(*eee)); 1748 1749 eee->eee_active = keee->eee_active; 1750 eee->eee_enabled = keee->eee_enabled; 1751 eee->tx_lpi_enabled = keee->tx_lpi_enabled; 1752 eee->tx_lpi_timer = keee->tx_lpi_timer; 1753 1754 overflow = !ethtool_convert_link_mode_to_legacy_u32(&eee->supported, 1755 keee->supported); 1756 ethtool_convert_link_mode_to_legacy_u32(&eee->advertised, 1757 keee->advertised); 1758 ethtool_convert_link_mode_to_legacy_u32(&eee->lp_advertised, 1759 keee->lp_advertised); 1760 if (overflow) 1761 pr_warn("Ethtool ioctl interface doesn't support passing EEE linkmodes beyond bit 32\n"); 1762 } 1763 1764 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) 1765 { 1766 struct ethtool_keee keee; 1767 struct ethtool_eee eee; 1768 int rc; 1769 1770 if (!dev->ethtool_ops->get_eee) 1771 return -EOPNOTSUPP; 1772 1773 memset(&keee, 0, sizeof(keee)); 1774 rc = dev->ethtool_ops->get_eee(dev, &keee); 1775 if (rc) 1776 return rc; 1777 1778 keee_to_eee(&eee, &keee); 1779 if (copy_to_user(useraddr, &eee, sizeof(eee))) 1780 return -EFAULT; 1781 1782 return 0; 1783 } 1784 1785 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) 1786 { 1787 struct ethtool_keee keee; 1788 struct ethtool_eee eee; 1789 int ret; 1790 1791 if (!dev->ethtool_ops->set_eee) 1792 return -EOPNOTSUPP; 1793 1794 if (copy_from_user(&eee, useraddr, sizeof(eee))) 1795 return -EFAULT; 1796 1797 eee_to_keee(&keee, &eee); 1798 ret = dev->ethtool_ops->set_eee(dev, &keee); 1799 if (!ret) 1800 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL); 1801 return ret; 1802 } 1803 1804 static int ethtool_nway_reset(struct net_device *dev) 1805 { 1806 if (!dev->ethtool_ops->nway_reset) 1807 return -EOPNOTSUPP; 1808 1809 return dev->ethtool_ops->nway_reset(dev); 1810 } 1811 1812 static int ethtool_get_link(struct net_device *dev, char __user *useraddr) 1813 { 1814 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; 1815 int link = __ethtool_get_link(dev); 1816 1817 if (link < 0) 1818 return link; 1819 1820 edata.data = link; 1821 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1822 return -EFAULT; 1823 return 0; 1824 } 1825 1826 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, 1827 int (*getter)(struct net_device *, 1828 struct ethtool_eeprom *, u8 *), 1829 u32 total_len) 1830 { 1831 struct ethtool_eeprom eeprom; 1832 void __user *userbuf = useraddr + sizeof(eeprom); 1833 u32 bytes_remaining; 1834 u8 *data; 1835 int ret = 0; 1836 1837 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1838 return -EFAULT; 1839 1840 /* Check for wrap and zero */ 1841 if (eeprom.offset + eeprom.len <= eeprom.offset) 1842 return -EINVAL; 1843 1844 /* Check for exceeding total eeprom len */ 1845 if (eeprom.offset + eeprom.len > total_len) 1846 return -EINVAL; 1847 1848 data = kzalloc(PAGE_SIZE, GFP_USER); 1849 if (!data) 1850 return -ENOMEM; 1851 1852 bytes_remaining = eeprom.len; 1853 while (bytes_remaining > 0) { 1854 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1855 1856 ret = getter(dev, &eeprom, data); 1857 if (ret) 1858 break; 1859 if (!eeprom.len) { 1860 ret = -EIO; 1861 break; 1862 } 1863 if (copy_to_user(userbuf, data, eeprom.len)) { 1864 ret = -EFAULT; 1865 break; 1866 } 1867 userbuf += eeprom.len; 1868 eeprom.offset += eeprom.len; 1869 bytes_remaining -= eeprom.len; 1870 } 1871 1872 eeprom.len = userbuf - (useraddr + sizeof(eeprom)); 1873 eeprom.offset -= eeprom.len; 1874 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) 1875 ret = -EFAULT; 1876 1877 kfree(data); 1878 return ret; 1879 } 1880 1881 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) 1882 { 1883 const struct ethtool_ops *ops = dev->ethtool_ops; 1884 1885 if (!ops->get_eeprom || !ops->get_eeprom_len || 1886 !ops->get_eeprom_len(dev)) 1887 return -EOPNOTSUPP; 1888 1889 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, 1890 ops->get_eeprom_len(dev)); 1891 } 1892 1893 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) 1894 { 1895 struct ethtool_eeprom eeprom; 1896 const struct ethtool_ops *ops = dev->ethtool_ops; 1897 void __user *userbuf = useraddr + sizeof(eeprom); 1898 u32 bytes_remaining; 1899 u8 *data; 1900 int ret = 0; 1901 1902 if (!ops->set_eeprom || !ops->get_eeprom_len || 1903 !ops->get_eeprom_len(dev)) 1904 return -EOPNOTSUPP; 1905 1906 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1907 return -EFAULT; 1908 1909 /* Check for wrap and zero */ 1910 if (eeprom.offset + eeprom.len <= eeprom.offset) 1911 return -EINVAL; 1912 1913 /* Check for exceeding total eeprom len */ 1914 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) 1915 return -EINVAL; 1916 1917 data = kzalloc(PAGE_SIZE, GFP_USER); 1918 if (!data) 1919 return -ENOMEM; 1920 1921 bytes_remaining = eeprom.len; 1922 while (bytes_remaining > 0) { 1923 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1924 1925 if (copy_from_user(data, userbuf, eeprom.len)) { 1926 ret = -EFAULT; 1927 break; 1928 } 1929 ret = ops->set_eeprom(dev, &eeprom, data); 1930 if (ret) 1931 break; 1932 userbuf += eeprom.len; 1933 eeprom.offset += eeprom.len; 1934 bytes_remaining -= eeprom.len; 1935 } 1936 1937 kfree(data); 1938 return ret; 1939 } 1940 1941 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, 1942 void __user *useraddr) 1943 { 1944 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 1945 struct kernel_ethtool_coalesce kernel_coalesce = {}; 1946 int ret; 1947 1948 if (!dev->ethtool_ops->get_coalesce) 1949 return -EOPNOTSUPP; 1950 1951 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 1952 NULL); 1953 if (ret) 1954 return ret; 1955 1956 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 1957 return -EFAULT; 1958 return 0; 1959 } 1960 1961 static bool 1962 ethtool_set_coalesce_supported(struct net_device *dev, 1963 struct ethtool_coalesce *coalesce) 1964 { 1965 u32 supported_params = dev->ethtool_ops->supported_coalesce_params; 1966 u32 nonzero_params = 0; 1967 1968 if (coalesce->rx_coalesce_usecs) 1969 nonzero_params |= ETHTOOL_COALESCE_RX_USECS; 1970 if (coalesce->rx_max_coalesced_frames) 1971 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; 1972 if (coalesce->rx_coalesce_usecs_irq) 1973 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; 1974 if (coalesce->rx_max_coalesced_frames_irq) 1975 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; 1976 if (coalesce->tx_coalesce_usecs) 1977 nonzero_params |= ETHTOOL_COALESCE_TX_USECS; 1978 if (coalesce->tx_max_coalesced_frames) 1979 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; 1980 if (coalesce->tx_coalesce_usecs_irq) 1981 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; 1982 if (coalesce->tx_max_coalesced_frames_irq) 1983 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; 1984 if (coalesce->stats_block_coalesce_usecs) 1985 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; 1986 if (coalesce->use_adaptive_rx_coalesce) 1987 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; 1988 if (coalesce->use_adaptive_tx_coalesce) 1989 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; 1990 if (coalesce->pkt_rate_low) 1991 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; 1992 if (coalesce->rx_coalesce_usecs_low) 1993 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; 1994 if (coalesce->rx_max_coalesced_frames_low) 1995 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; 1996 if (coalesce->tx_coalesce_usecs_low) 1997 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; 1998 if (coalesce->tx_max_coalesced_frames_low) 1999 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; 2000 if (coalesce->pkt_rate_high) 2001 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; 2002 if (coalesce->rx_coalesce_usecs_high) 2003 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; 2004 if (coalesce->rx_max_coalesced_frames_high) 2005 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; 2006 if (coalesce->tx_coalesce_usecs_high) 2007 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; 2008 if (coalesce->tx_max_coalesced_frames_high) 2009 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; 2010 if (coalesce->rate_sample_interval) 2011 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; 2012 2013 return (supported_params & nonzero_params) == nonzero_params; 2014 } 2015 2016 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, 2017 void __user *useraddr) 2018 { 2019 struct kernel_ethtool_coalesce kernel_coalesce = {}; 2020 struct ethtool_coalesce coalesce; 2021 int ret; 2022 2023 if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce) 2024 return -EOPNOTSUPP; 2025 2026 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 2027 NULL); 2028 if (ret) 2029 return ret; 2030 2031 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) 2032 return -EFAULT; 2033 2034 if (!ethtool_set_coalesce_supported(dev, &coalesce)) 2035 return -EOPNOTSUPP; 2036 2037 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, 2038 NULL); 2039 if (!ret) 2040 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL); 2041 return ret; 2042 } 2043 2044 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) 2045 { 2046 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; 2047 struct kernel_ethtool_ringparam kernel_ringparam = {}; 2048 2049 if (!dev->ethtool_ops->get_ringparam) 2050 return -EOPNOTSUPP; 2051 2052 dev->ethtool_ops->get_ringparam(dev, &ringparam, 2053 &kernel_ringparam, NULL); 2054 2055 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) 2056 return -EFAULT; 2057 return 0; 2058 } 2059 2060 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) 2061 { 2062 struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM }; 2063 struct kernel_ethtool_ringparam kernel_ringparam; 2064 int ret; 2065 2066 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) 2067 return -EOPNOTSUPP; 2068 2069 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) 2070 return -EFAULT; 2071 2072 dev->ethtool_ops->get_ringparam(dev, &max, &kernel_ringparam, NULL); 2073 2074 /* ensure new ring parameters are within the maximums */ 2075 if (ringparam.rx_pending > max.rx_max_pending || 2076 ringparam.rx_mini_pending > max.rx_mini_max_pending || 2077 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || 2078 ringparam.tx_pending > max.tx_max_pending) 2079 return -EINVAL; 2080 2081 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, 2082 &kernel_ringparam, NULL); 2083 if (!ret) 2084 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL); 2085 return ret; 2086 } 2087 2088 static noinline_for_stack int ethtool_get_channels(struct net_device *dev, 2089 void __user *useraddr) 2090 { 2091 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; 2092 2093 if (!dev->ethtool_ops->get_channels) 2094 return -EOPNOTSUPP; 2095 2096 dev->ethtool_ops->get_channels(dev, &channels); 2097 2098 if (copy_to_user(useraddr, &channels, sizeof(channels))) 2099 return -EFAULT; 2100 return 0; 2101 } 2102 2103 static noinline_for_stack int ethtool_set_channels(struct net_device *dev, 2104 void __user *useraddr) 2105 { 2106 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; 2107 u16 from_channel, to_channel; 2108 unsigned int i; 2109 int ret; 2110 2111 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) 2112 return -EOPNOTSUPP; 2113 2114 if (copy_from_user(&channels, useraddr, sizeof(channels))) 2115 return -EFAULT; 2116 2117 dev->ethtool_ops->get_channels(dev, &curr); 2118 2119 if (channels.rx_count == curr.rx_count && 2120 channels.tx_count == curr.tx_count && 2121 channels.combined_count == curr.combined_count && 2122 channels.other_count == curr.other_count) 2123 return 0; 2124 2125 /* ensure new counts are within the maximums */ 2126 if (channels.rx_count > curr.max_rx || 2127 channels.tx_count > curr.max_tx || 2128 channels.combined_count > curr.max_combined || 2129 channels.other_count > curr.max_other) 2130 return -EINVAL; 2131 2132 /* ensure there is at least one RX and one TX channel */ 2133 if (!channels.combined_count && 2134 (!channels.rx_count || !channels.tx_count)) 2135 return -EINVAL; 2136 2137 ret = ethtool_check_max_channel(dev, channels, NULL); 2138 if (ret) 2139 return ret; 2140 2141 /* Disabling channels, query zero-copy AF_XDP sockets */ 2142 from_channel = channels.combined_count + 2143 min(channels.rx_count, channels.tx_count); 2144 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); 2145 for (i = from_channel; i < to_channel; i++) 2146 if (xsk_get_pool_from_qid(dev, i)) 2147 return -EINVAL; 2148 2149 ret = dev->ethtool_ops->set_channels(dev, &channels); 2150 if (!ret) 2151 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL); 2152 return ret; 2153 } 2154 2155 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) 2156 { 2157 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; 2158 2159 if (!dev->ethtool_ops->get_pauseparam) 2160 return -EOPNOTSUPP; 2161 2162 dev->ethtool_ops->get_pauseparam(dev, &pauseparam); 2163 2164 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) 2165 return -EFAULT; 2166 return 0; 2167 } 2168 2169 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) 2170 { 2171 struct ethtool_pauseparam pauseparam; 2172 int ret; 2173 2174 if (!dev->ethtool_ops->set_pauseparam) 2175 return -EOPNOTSUPP; 2176 2177 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) 2178 return -EFAULT; 2179 2180 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); 2181 if (!ret) 2182 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL); 2183 return ret; 2184 } 2185 2186 static int ethtool_self_test(struct net_device *dev, char __user *useraddr) 2187 { 2188 struct ethtool_test test; 2189 const struct ethtool_ops *ops = dev->ethtool_ops; 2190 u64 *data; 2191 int ret, test_len; 2192 2193 if (!ops->self_test || !ops->get_sset_count) 2194 return -EOPNOTSUPP; 2195 2196 test_len = ops->get_sset_count(dev, ETH_SS_TEST); 2197 if (test_len < 0) 2198 return test_len; 2199 WARN_ON(test_len == 0); 2200 2201 if (copy_from_user(&test, useraddr, sizeof(test))) 2202 return -EFAULT; 2203 2204 test.len = test_len; 2205 data = kcalloc(test_len, sizeof(u64), GFP_USER); 2206 if (!data) 2207 return -ENOMEM; 2208 2209 netif_testing_on(dev); 2210 ops->self_test(dev, &test, data); 2211 netif_testing_off(dev); 2212 2213 ret = -EFAULT; 2214 if (copy_to_user(useraddr, &test, sizeof(test))) 2215 goto out; 2216 useraddr += sizeof(test); 2217 if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) 2218 goto out; 2219 ret = 0; 2220 2221 out: 2222 kfree(data); 2223 return ret; 2224 } 2225 2226 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) 2227 { 2228 struct ethtool_gstrings gstrings; 2229 u8 *data; 2230 int ret; 2231 2232 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) 2233 return -EFAULT; 2234 2235 ret = __ethtool_get_sset_count(dev, gstrings.string_set); 2236 if (ret < 0) 2237 return ret; 2238 if (ret > S32_MAX / ETH_GSTRING_LEN) 2239 return -ENOMEM; 2240 WARN_ON_ONCE(!ret); 2241 2242 gstrings.len = ret; 2243 2244 if (gstrings.len) { 2245 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); 2246 if (!data) 2247 return -ENOMEM; 2248 2249 __ethtool_get_strings(dev, gstrings.string_set, data); 2250 } else { 2251 data = NULL; 2252 } 2253 2254 ret = -EFAULT; 2255 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) 2256 goto out; 2257 useraddr += sizeof(gstrings); 2258 if (gstrings.len && 2259 copy_to_user(useraddr, data, 2260 array_size(gstrings.len, ETH_GSTRING_LEN))) 2261 goto out; 2262 ret = 0; 2263 2264 out: 2265 vfree(data); 2266 return ret; 2267 } 2268 2269 __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) 2270 { 2271 va_list args; 2272 2273 va_start(args, fmt); 2274 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); 2275 va_end(args); 2276 2277 *data += ETH_GSTRING_LEN; 2278 } 2279 EXPORT_SYMBOL(ethtool_sprintf); 2280 2281 void ethtool_puts(u8 **data, const char *str) 2282 { 2283 strscpy(*data, str, ETH_GSTRING_LEN); 2284 *data += ETH_GSTRING_LEN; 2285 } 2286 EXPORT_SYMBOL(ethtool_puts); 2287 2288 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) 2289 { 2290 struct ethtool_value id; 2291 static bool busy; 2292 const struct ethtool_ops *ops = dev->ethtool_ops; 2293 netdevice_tracker dev_tracker; 2294 int rc; 2295 2296 if (!ops->set_phys_id) 2297 return -EOPNOTSUPP; 2298 2299 if (busy) 2300 return -EBUSY; 2301 2302 if (copy_from_user(&id, useraddr, sizeof(id))) 2303 return -EFAULT; 2304 2305 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); 2306 if (rc < 0) 2307 return rc; 2308 2309 /* Drop the RTNL lock while waiting, but prevent reentry or 2310 * removal of the device. 2311 */ 2312 busy = true; 2313 netdev_hold(dev, &dev_tracker, GFP_KERNEL); 2314 rtnl_unlock(); 2315 2316 if (rc == 0) { 2317 /* Driver will handle this itself */ 2318 schedule_timeout_interruptible( 2319 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); 2320 } else { 2321 /* Driver expects to be called at twice the frequency in rc */ 2322 int n = rc * 2, interval = HZ / n; 2323 u64 count = mul_u32_u32(n, id.data); 2324 u64 i = 0; 2325 2326 do { 2327 rtnl_lock(); 2328 rc = ops->set_phys_id(dev, 2329 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); 2330 rtnl_unlock(); 2331 if (rc) 2332 break; 2333 schedule_timeout_interruptible(interval); 2334 } while (!signal_pending(current) && (!id.data || i < count)); 2335 } 2336 2337 rtnl_lock(); 2338 netdev_put(dev, &dev_tracker); 2339 busy = false; 2340 2341 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); 2342 return rc; 2343 } 2344 2345 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) 2346 { 2347 struct ethtool_stats stats; 2348 const struct ethtool_ops *ops = dev->ethtool_ops; 2349 u64 *data; 2350 int ret, n_stats; 2351 2352 if (!ops->get_ethtool_stats || !ops->get_sset_count) 2353 return -EOPNOTSUPP; 2354 2355 n_stats = ops->get_sset_count(dev, ETH_SS_STATS); 2356 if (n_stats < 0) 2357 return n_stats; 2358 if (n_stats > S32_MAX / sizeof(u64)) 2359 return -ENOMEM; 2360 WARN_ON_ONCE(!n_stats); 2361 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2362 return -EFAULT; 2363 2364 stats.n_stats = n_stats; 2365 2366 if (n_stats) { 2367 data = vzalloc(array_size(n_stats, sizeof(u64))); 2368 if (!data) 2369 return -ENOMEM; 2370 ops->get_ethtool_stats(dev, &stats, data); 2371 } else { 2372 data = NULL; 2373 } 2374 2375 ret = -EFAULT; 2376 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2377 goto out; 2378 useraddr += sizeof(stats); 2379 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) 2380 goto out; 2381 ret = 0; 2382 2383 out: 2384 vfree(data); 2385 return ret; 2386 } 2387 2388 static int ethtool_vzalloc_stats_array(int n_stats, u64 **data) 2389 { 2390 if (n_stats < 0) 2391 return n_stats; 2392 if (n_stats > S32_MAX / sizeof(u64)) 2393 return -ENOMEM; 2394 if (WARN_ON_ONCE(!n_stats)) 2395 return -EOPNOTSUPP; 2396 2397 *data = vzalloc(array_size(n_stats, sizeof(u64))); 2398 if (!*data) 2399 return -ENOMEM; 2400 2401 return 0; 2402 } 2403 2404 static int ethtool_get_phy_stats_phydev(struct phy_device *phydev, 2405 struct ethtool_stats *stats, 2406 u64 **data) 2407 { 2408 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 2409 int n_stats, ret; 2410 2411 if (!phy_ops || !phy_ops->get_sset_count || !phy_ops->get_stats) 2412 return -EOPNOTSUPP; 2413 2414 n_stats = phy_ops->get_sset_count(phydev); 2415 2416 ret = ethtool_vzalloc_stats_array(n_stats, data); 2417 if (ret) 2418 return ret; 2419 2420 stats->n_stats = n_stats; 2421 return phy_ops->get_stats(phydev, stats, *data); 2422 } 2423 2424 static int ethtool_get_phy_stats_ethtool(struct net_device *dev, 2425 struct ethtool_stats *stats, 2426 u64 **data) 2427 { 2428 const struct ethtool_ops *ops = dev->ethtool_ops; 2429 int n_stats, ret; 2430 2431 if (!ops || !ops->get_sset_count || !ops->get_ethtool_phy_stats) 2432 return -EOPNOTSUPP; 2433 2434 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); 2435 2436 ret = ethtool_vzalloc_stats_array(n_stats, data); 2437 if (ret) 2438 return ret; 2439 2440 stats->n_stats = n_stats; 2441 ops->get_ethtool_phy_stats(dev, stats, *data); 2442 2443 return 0; 2444 } 2445 2446 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) 2447 { 2448 struct phy_device *phydev = dev->phydev; 2449 struct ethtool_stats stats; 2450 u64 *data = NULL; 2451 int ret = -EOPNOTSUPP; 2452 2453 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2454 return -EFAULT; 2455 2456 if (phydev) 2457 ret = ethtool_get_phy_stats_phydev(phydev, &stats, &data); 2458 2459 if (ret == -EOPNOTSUPP) 2460 ret = ethtool_get_phy_stats_ethtool(dev, &stats, &data); 2461 2462 if (ret) 2463 goto out; 2464 2465 if (copy_to_user(useraddr, &stats, sizeof(stats))) { 2466 ret = -EFAULT; 2467 goto out; 2468 } 2469 2470 useraddr += sizeof(stats); 2471 if (copy_to_user(useraddr, data, array_size(stats.n_stats, sizeof(u64)))) 2472 ret = -EFAULT; 2473 2474 out: 2475 vfree(data); 2476 return ret; 2477 } 2478 2479 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) 2480 { 2481 struct ethtool_perm_addr epaddr; 2482 2483 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) 2484 return -EFAULT; 2485 2486 if (epaddr.size < dev->addr_len) 2487 return -ETOOSMALL; 2488 epaddr.size = dev->addr_len; 2489 2490 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) 2491 return -EFAULT; 2492 useraddr += sizeof(epaddr); 2493 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) 2494 return -EFAULT; 2495 return 0; 2496 } 2497 2498 static int ethtool_get_value(struct net_device *dev, char __user *useraddr, 2499 u32 cmd, u32 (*actor)(struct net_device *)) 2500 { 2501 struct ethtool_value edata = { .cmd = cmd }; 2502 2503 if (!actor) 2504 return -EOPNOTSUPP; 2505 2506 edata.data = actor(dev); 2507 2508 if (copy_to_user(useraddr, &edata, sizeof(edata))) 2509 return -EFAULT; 2510 return 0; 2511 } 2512 2513 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, 2514 void (*actor)(struct net_device *, u32)) 2515 { 2516 struct ethtool_value edata; 2517 2518 if (!actor) 2519 return -EOPNOTSUPP; 2520 2521 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2522 return -EFAULT; 2523 2524 actor(dev, edata.data); 2525 return 0; 2526 } 2527 2528 static int ethtool_set_value(struct net_device *dev, char __user *useraddr, 2529 int (*actor)(struct net_device *, u32)) 2530 { 2531 struct ethtool_value edata; 2532 2533 if (!actor) 2534 return -EOPNOTSUPP; 2535 2536 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2537 return -EFAULT; 2538 2539 return actor(dev, edata.data); 2540 } 2541 2542 static int 2543 ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) 2544 { 2545 if (!dev->ethtool_ops->flash_device) { 2546 req->devlink = netdev_to_devlink_get(dev); 2547 return 0; 2548 } 2549 2550 return dev->ethtool_ops->flash_device(dev, &req->efl); 2551 } 2552 2553 static int ethtool_set_dump(struct net_device *dev, 2554 void __user *useraddr) 2555 { 2556 struct ethtool_dump dump; 2557 2558 if (!dev->ethtool_ops->set_dump) 2559 return -EOPNOTSUPP; 2560 2561 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2562 return -EFAULT; 2563 2564 return dev->ethtool_ops->set_dump(dev, &dump); 2565 } 2566 2567 static int ethtool_get_dump_flag(struct net_device *dev, 2568 void __user *useraddr) 2569 { 2570 int ret; 2571 struct ethtool_dump dump; 2572 const struct ethtool_ops *ops = dev->ethtool_ops; 2573 2574 if (!ops->get_dump_flag) 2575 return -EOPNOTSUPP; 2576 2577 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2578 return -EFAULT; 2579 2580 ret = ops->get_dump_flag(dev, &dump); 2581 if (ret) 2582 return ret; 2583 2584 if (copy_to_user(useraddr, &dump, sizeof(dump))) 2585 return -EFAULT; 2586 return 0; 2587 } 2588 2589 static int ethtool_get_dump_data(struct net_device *dev, 2590 void __user *useraddr) 2591 { 2592 int ret; 2593 __u32 len; 2594 struct ethtool_dump dump, tmp; 2595 const struct ethtool_ops *ops = dev->ethtool_ops; 2596 void *data = NULL; 2597 2598 if (!ops->get_dump_data || !ops->get_dump_flag) 2599 return -EOPNOTSUPP; 2600 2601 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2602 return -EFAULT; 2603 2604 memset(&tmp, 0, sizeof(tmp)); 2605 tmp.cmd = ETHTOOL_GET_DUMP_FLAG; 2606 ret = ops->get_dump_flag(dev, &tmp); 2607 if (ret) 2608 return ret; 2609 2610 len = min(tmp.len, dump.len); 2611 if (!len) 2612 return -EFAULT; 2613 2614 /* Don't ever let the driver think there's more space available 2615 * than it requested with .get_dump_flag(). 2616 */ 2617 dump.len = len; 2618 2619 /* Always allocate enough space to hold the whole thing so that the 2620 * driver does not need to check the length and bother with partial 2621 * dumping. 2622 */ 2623 data = vzalloc(tmp.len); 2624 if (!data) 2625 return -ENOMEM; 2626 ret = ops->get_dump_data(dev, &dump, data); 2627 if (ret) 2628 goto out; 2629 2630 /* There are two sane possibilities: 2631 * 1. The driver's .get_dump_data() does not touch dump.len. 2632 * 2. Or it may set dump.len to how much it really writes, which 2633 * should be tmp.len (or len if it can do a partial dump). 2634 * In any case respond to userspace with the actual length of data 2635 * it's receiving. 2636 */ 2637 WARN_ON(dump.len != len && dump.len != tmp.len); 2638 dump.len = len; 2639 2640 if (copy_to_user(useraddr, &dump, sizeof(dump))) { 2641 ret = -EFAULT; 2642 goto out; 2643 } 2644 useraddr += offsetof(struct ethtool_dump, data); 2645 if (copy_to_user(useraddr, data, len)) 2646 ret = -EFAULT; 2647 out: 2648 vfree(data); 2649 return ret; 2650 } 2651 2652 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) 2653 { 2654 struct kernel_ethtool_ts_info kernel_info; 2655 struct ethtool_ts_info info = {}; 2656 int err; 2657 2658 err = __ethtool_get_ts_info(dev, &kernel_info); 2659 if (err) 2660 return err; 2661 2662 info.cmd = kernel_info.cmd; 2663 info.so_timestamping = kernel_info.so_timestamping; 2664 info.phc_index = kernel_info.phc_index; 2665 info.tx_types = kernel_info.tx_types; 2666 info.rx_filters = kernel_info.rx_filters; 2667 2668 if (copy_to_user(useraddr, &info, sizeof(info))) 2669 return -EFAULT; 2670 2671 return 0; 2672 } 2673 2674 int ethtool_get_module_info_call(struct net_device *dev, 2675 struct ethtool_modinfo *modinfo) 2676 { 2677 const struct ethtool_ops *ops = dev->ethtool_ops; 2678 struct phy_device *phydev = dev->phydev; 2679 2680 if (dev->ethtool->module_fw_flash_in_progress) 2681 return -EBUSY; 2682 2683 if (dev->sfp_bus) 2684 return sfp_get_module_info(dev->sfp_bus, modinfo); 2685 2686 if (phydev && phydev->drv && phydev->drv->module_info) 2687 return phydev->drv->module_info(phydev, modinfo); 2688 2689 if (ops->get_module_info) 2690 return ops->get_module_info(dev, modinfo); 2691 2692 return -EOPNOTSUPP; 2693 } 2694 2695 static int ethtool_get_module_info(struct net_device *dev, 2696 void __user *useraddr) 2697 { 2698 int ret; 2699 struct ethtool_modinfo modinfo; 2700 2701 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) 2702 return -EFAULT; 2703 2704 ret = ethtool_get_module_info_call(dev, &modinfo); 2705 if (ret) 2706 return ret; 2707 2708 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) 2709 return -EFAULT; 2710 2711 return 0; 2712 } 2713 2714 int ethtool_get_module_eeprom_call(struct net_device *dev, 2715 struct ethtool_eeprom *ee, u8 *data) 2716 { 2717 const struct ethtool_ops *ops = dev->ethtool_ops; 2718 struct phy_device *phydev = dev->phydev; 2719 2720 if (dev->ethtool->module_fw_flash_in_progress) 2721 return -EBUSY; 2722 2723 if (dev->sfp_bus) 2724 return sfp_get_module_eeprom(dev->sfp_bus, ee, data); 2725 2726 if (phydev && phydev->drv && phydev->drv->module_eeprom) 2727 return phydev->drv->module_eeprom(phydev, ee, data); 2728 2729 if (ops->get_module_eeprom) 2730 return ops->get_module_eeprom(dev, ee, data); 2731 2732 return -EOPNOTSUPP; 2733 } 2734 2735 static int ethtool_get_module_eeprom(struct net_device *dev, 2736 void __user *useraddr) 2737 { 2738 int ret; 2739 struct ethtool_modinfo modinfo; 2740 2741 ret = ethtool_get_module_info_call(dev, &modinfo); 2742 if (ret) 2743 return ret; 2744 2745 return ethtool_get_any_eeprom(dev, useraddr, 2746 ethtool_get_module_eeprom_call, 2747 modinfo.eeprom_len); 2748 } 2749 2750 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) 2751 { 2752 switch (tuna->id) { 2753 case ETHTOOL_RX_COPYBREAK: 2754 case ETHTOOL_TX_COPYBREAK: 2755 case ETHTOOL_TX_COPYBREAK_BUF_SIZE: 2756 if (tuna->len != sizeof(u32) || 2757 tuna->type_id != ETHTOOL_TUNABLE_U32) 2758 return -EINVAL; 2759 break; 2760 case ETHTOOL_PFC_PREVENTION_TOUT: 2761 if (tuna->len != sizeof(u16) || 2762 tuna->type_id != ETHTOOL_TUNABLE_U16) 2763 return -EINVAL; 2764 break; 2765 default: 2766 return -EINVAL; 2767 } 2768 2769 return 0; 2770 } 2771 2772 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) 2773 { 2774 int ret; 2775 struct ethtool_tunable tuna; 2776 const struct ethtool_ops *ops = dev->ethtool_ops; 2777 void *data; 2778 2779 if (!ops->get_tunable) 2780 return -EOPNOTSUPP; 2781 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2782 return -EFAULT; 2783 ret = ethtool_tunable_valid(&tuna); 2784 if (ret) 2785 return ret; 2786 data = kzalloc(tuna.len, GFP_USER); 2787 if (!data) 2788 return -ENOMEM; 2789 ret = ops->get_tunable(dev, &tuna, data); 2790 if (ret) 2791 goto out; 2792 useraddr += sizeof(tuna); 2793 ret = -EFAULT; 2794 if (copy_to_user(useraddr, data, tuna.len)) 2795 goto out; 2796 ret = 0; 2797 2798 out: 2799 kfree(data); 2800 return ret; 2801 } 2802 2803 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) 2804 { 2805 int ret; 2806 struct ethtool_tunable tuna; 2807 const struct ethtool_ops *ops = dev->ethtool_ops; 2808 void *data; 2809 2810 if (!ops->set_tunable) 2811 return -EOPNOTSUPP; 2812 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2813 return -EFAULT; 2814 ret = ethtool_tunable_valid(&tuna); 2815 if (ret) 2816 return ret; 2817 useraddr += sizeof(tuna); 2818 data = memdup_user(useraddr, tuna.len); 2819 if (IS_ERR(data)) 2820 return PTR_ERR(data); 2821 ret = ops->set_tunable(dev, &tuna, data); 2822 2823 kfree(data); 2824 return ret; 2825 } 2826 2827 static noinline_for_stack int 2828 ethtool_get_per_queue_coalesce(struct net_device *dev, 2829 void __user *useraddr, 2830 struct ethtool_per_queue_op *per_queue_opt) 2831 { 2832 u32 bit; 2833 int ret; 2834 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2835 2836 if (!dev->ethtool_ops->get_per_queue_coalesce) 2837 return -EOPNOTSUPP; 2838 2839 useraddr += sizeof(*per_queue_opt); 2840 2841 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, 2842 MAX_NUM_QUEUE); 2843 2844 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2845 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2846 2847 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); 2848 if (ret != 0) 2849 return ret; 2850 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2851 return -EFAULT; 2852 useraddr += sizeof(coalesce); 2853 } 2854 2855 return 0; 2856 } 2857 2858 static noinline_for_stack int 2859 ethtool_set_per_queue_coalesce(struct net_device *dev, 2860 void __user *useraddr, 2861 struct ethtool_per_queue_op *per_queue_opt) 2862 { 2863 u32 bit; 2864 int i, ret = 0; 2865 int n_queue; 2866 struct ethtool_coalesce *backup = NULL, *tmp = NULL; 2867 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2868 2869 if ((!dev->ethtool_ops->set_per_queue_coalesce) || 2870 (!dev->ethtool_ops->get_per_queue_coalesce)) 2871 return -EOPNOTSUPP; 2872 2873 useraddr += sizeof(*per_queue_opt); 2874 2875 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); 2876 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); 2877 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); 2878 if (!backup) 2879 return -ENOMEM; 2880 2881 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2882 struct ethtool_coalesce coalesce; 2883 2884 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); 2885 if (ret != 0) 2886 goto roll_back; 2887 2888 tmp++; 2889 2890 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { 2891 ret = -EFAULT; 2892 goto roll_back; 2893 } 2894 2895 if (!ethtool_set_coalesce_supported(dev, &coalesce)) { 2896 ret = -EOPNOTSUPP; 2897 goto roll_back; 2898 } 2899 2900 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); 2901 if (ret != 0) 2902 goto roll_back; 2903 2904 useraddr += sizeof(coalesce); 2905 } 2906 2907 roll_back: 2908 if (ret != 0) { 2909 tmp = backup; 2910 for_each_set_bit(i, queue_mask, bit) { 2911 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); 2912 tmp++; 2913 } 2914 } 2915 kfree(backup); 2916 2917 return ret; 2918 } 2919 2920 static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, 2921 void __user *useraddr, u32 sub_cmd) 2922 { 2923 struct ethtool_per_queue_op per_queue_opt; 2924 2925 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) 2926 return -EFAULT; 2927 2928 if (per_queue_opt.sub_command != sub_cmd) 2929 return -EINVAL; 2930 2931 switch (per_queue_opt.sub_command) { 2932 case ETHTOOL_GCOALESCE: 2933 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2934 case ETHTOOL_SCOALESCE: 2935 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2936 default: 2937 return -EOPNOTSUPP; 2938 } 2939 } 2940 2941 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) 2942 { 2943 switch (tuna->id) { 2944 case ETHTOOL_PHY_DOWNSHIFT: 2945 case ETHTOOL_PHY_FAST_LINK_DOWN: 2946 if (tuna->len != sizeof(u8) || 2947 tuna->type_id != ETHTOOL_TUNABLE_U8) 2948 return -EINVAL; 2949 break; 2950 case ETHTOOL_PHY_EDPD: 2951 if (tuna->len != sizeof(u16) || 2952 tuna->type_id != ETHTOOL_TUNABLE_U16) 2953 return -EINVAL; 2954 break; 2955 default: 2956 return -EINVAL; 2957 } 2958 2959 return 0; 2960 } 2961 2962 static int get_phy_tunable(struct net_device *dev, void __user *useraddr) 2963 { 2964 struct phy_device *phydev = dev->phydev; 2965 struct ethtool_tunable tuna; 2966 bool phy_drv_tunable; 2967 void *data; 2968 int ret; 2969 2970 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 2971 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) 2972 return -EOPNOTSUPP; 2973 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2974 return -EFAULT; 2975 ret = ethtool_phy_tunable_valid(&tuna); 2976 if (ret) 2977 return ret; 2978 data = kzalloc(tuna.len, GFP_USER); 2979 if (!data) 2980 return -ENOMEM; 2981 if (phy_drv_tunable) { 2982 mutex_lock(&phydev->lock); 2983 ret = phydev->drv->get_tunable(phydev, &tuna, data); 2984 mutex_unlock(&phydev->lock); 2985 } else { 2986 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); 2987 } 2988 if (ret) 2989 goto out; 2990 useraddr += sizeof(tuna); 2991 ret = -EFAULT; 2992 if (copy_to_user(useraddr, data, tuna.len)) 2993 goto out; 2994 ret = 0; 2995 2996 out: 2997 kfree(data); 2998 return ret; 2999 } 3000 3001 static int set_phy_tunable(struct net_device *dev, void __user *useraddr) 3002 { 3003 struct phy_device *phydev = dev->phydev; 3004 struct ethtool_tunable tuna; 3005 bool phy_drv_tunable; 3006 void *data; 3007 int ret; 3008 3009 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 3010 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) 3011 return -EOPNOTSUPP; 3012 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 3013 return -EFAULT; 3014 ret = ethtool_phy_tunable_valid(&tuna); 3015 if (ret) 3016 return ret; 3017 useraddr += sizeof(tuna); 3018 data = memdup_user(useraddr, tuna.len); 3019 if (IS_ERR(data)) 3020 return PTR_ERR(data); 3021 if (phy_drv_tunable) { 3022 mutex_lock(&phydev->lock); 3023 ret = phydev->drv->set_tunable(phydev, &tuna, data); 3024 mutex_unlock(&phydev->lock); 3025 } else { 3026 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); 3027 } 3028 3029 kfree(data); 3030 return ret; 3031 } 3032 3033 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) 3034 { 3035 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; 3036 int rc; 3037 3038 if (!dev->ethtool_ops->get_fecparam) 3039 return -EOPNOTSUPP; 3040 3041 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); 3042 if (rc) 3043 return rc; 3044 3045 if (WARN_ON_ONCE(fecparam.reserved)) 3046 fecparam.reserved = 0; 3047 3048 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) 3049 return -EFAULT; 3050 return 0; 3051 } 3052 3053 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) 3054 { 3055 struct ethtool_fecparam fecparam; 3056 3057 if (!dev->ethtool_ops->set_fecparam) 3058 return -EOPNOTSUPP; 3059 3060 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) 3061 return -EFAULT; 3062 3063 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) 3064 return -EINVAL; 3065 3066 fecparam.active_fec = 0; 3067 fecparam.reserved = 0; 3068 3069 return dev->ethtool_ops->set_fecparam(dev, &fecparam); 3070 } 3071 3072 /* The main entry point in this file. Called from net/core/dev_ioctl.c */ 3073 3074 static int 3075 __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, 3076 u32 ethcmd, struct ethtool_devlink_compat *devlink_state) 3077 { 3078 struct net_device *dev; 3079 u32 sub_cmd; 3080 int rc; 3081 netdev_features_t old_features; 3082 3083 dev = __dev_get_by_name(net, ifr->ifr_name); 3084 if (!dev) 3085 return -ENODEV; 3086 3087 if (ethcmd == ETHTOOL_PERQUEUE) { 3088 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) 3089 return -EFAULT; 3090 } else { 3091 sub_cmd = ethcmd; 3092 } 3093 /* Allow some commands to be done by anyone */ 3094 switch (sub_cmd) { 3095 case ETHTOOL_GSET: 3096 case ETHTOOL_GDRVINFO: 3097 case ETHTOOL_GMSGLVL: 3098 case ETHTOOL_GLINK: 3099 case ETHTOOL_GCOALESCE: 3100 case ETHTOOL_GRINGPARAM: 3101 case ETHTOOL_GPAUSEPARAM: 3102 case ETHTOOL_GRXCSUM: 3103 case ETHTOOL_GTXCSUM: 3104 case ETHTOOL_GSG: 3105 case ETHTOOL_GSSET_INFO: 3106 case ETHTOOL_GSTRINGS: 3107 case ETHTOOL_GSTATS: 3108 case ETHTOOL_GPHYSTATS: 3109 case ETHTOOL_GTSO: 3110 case ETHTOOL_GPERMADDR: 3111 case ETHTOOL_GUFO: 3112 case ETHTOOL_GGSO: 3113 case ETHTOOL_GGRO: 3114 case ETHTOOL_GFLAGS: 3115 case ETHTOOL_GPFLAGS: 3116 case ETHTOOL_GRXFH: 3117 case ETHTOOL_GRXRINGS: 3118 case ETHTOOL_GRXCLSRLCNT: 3119 case ETHTOOL_GRXCLSRULE: 3120 case ETHTOOL_GRXCLSRLALL: 3121 case ETHTOOL_GRXFHINDIR: 3122 case ETHTOOL_GRSSH: 3123 case ETHTOOL_GFEATURES: 3124 case ETHTOOL_GCHANNELS: 3125 case ETHTOOL_GET_TS_INFO: 3126 case ETHTOOL_GEEE: 3127 case ETHTOOL_GTUNABLE: 3128 case ETHTOOL_PHY_GTUNABLE: 3129 case ETHTOOL_GLINKSETTINGS: 3130 case ETHTOOL_GFECPARAM: 3131 break; 3132 default: 3133 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 3134 return -EPERM; 3135 } 3136 3137 if (dev->dev.parent) 3138 pm_runtime_get_sync(dev->dev.parent); 3139 3140 if (!netif_device_present(dev)) { 3141 rc = -ENODEV; 3142 goto out; 3143 } 3144 3145 if (dev->ethtool_ops->begin) { 3146 rc = dev->ethtool_ops->begin(dev); 3147 if (rc < 0) 3148 goto out; 3149 } 3150 old_features = dev->features; 3151 3152 switch (ethcmd) { 3153 case ETHTOOL_GSET: 3154 rc = ethtool_get_settings(dev, useraddr); 3155 break; 3156 case ETHTOOL_SSET: 3157 rc = ethtool_set_settings(dev, useraddr); 3158 break; 3159 case ETHTOOL_GDRVINFO: 3160 rc = ethtool_get_drvinfo(dev, devlink_state); 3161 break; 3162 case ETHTOOL_GREGS: 3163 rc = ethtool_get_regs(dev, useraddr); 3164 break; 3165 case ETHTOOL_GWOL: 3166 rc = ethtool_get_wol(dev, useraddr); 3167 break; 3168 case ETHTOOL_SWOL: 3169 rc = ethtool_set_wol(dev, useraddr); 3170 break; 3171 case ETHTOOL_GMSGLVL: 3172 rc = ethtool_get_value(dev, useraddr, ethcmd, 3173 dev->ethtool_ops->get_msglevel); 3174 break; 3175 case ETHTOOL_SMSGLVL: 3176 rc = ethtool_set_value_void(dev, useraddr, 3177 dev->ethtool_ops->set_msglevel); 3178 if (!rc) 3179 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL); 3180 break; 3181 case ETHTOOL_GEEE: 3182 rc = ethtool_get_eee(dev, useraddr); 3183 break; 3184 case ETHTOOL_SEEE: 3185 rc = ethtool_set_eee(dev, useraddr); 3186 break; 3187 case ETHTOOL_NWAY_RST: 3188 rc = ethtool_nway_reset(dev); 3189 break; 3190 case ETHTOOL_GLINK: 3191 rc = ethtool_get_link(dev, useraddr); 3192 break; 3193 case ETHTOOL_GEEPROM: 3194 rc = ethtool_get_eeprom(dev, useraddr); 3195 break; 3196 case ETHTOOL_SEEPROM: 3197 rc = ethtool_set_eeprom(dev, useraddr); 3198 break; 3199 case ETHTOOL_GCOALESCE: 3200 rc = ethtool_get_coalesce(dev, useraddr); 3201 break; 3202 case ETHTOOL_SCOALESCE: 3203 rc = ethtool_set_coalesce(dev, useraddr); 3204 break; 3205 case ETHTOOL_GRINGPARAM: 3206 rc = ethtool_get_ringparam(dev, useraddr); 3207 break; 3208 case ETHTOOL_SRINGPARAM: 3209 rc = ethtool_set_ringparam(dev, useraddr); 3210 break; 3211 case ETHTOOL_GPAUSEPARAM: 3212 rc = ethtool_get_pauseparam(dev, useraddr); 3213 break; 3214 case ETHTOOL_SPAUSEPARAM: 3215 rc = ethtool_set_pauseparam(dev, useraddr); 3216 break; 3217 case ETHTOOL_TEST: 3218 rc = ethtool_self_test(dev, useraddr); 3219 break; 3220 case ETHTOOL_GSTRINGS: 3221 rc = ethtool_get_strings(dev, useraddr); 3222 break; 3223 case ETHTOOL_PHYS_ID: 3224 rc = ethtool_phys_id(dev, useraddr); 3225 break; 3226 case ETHTOOL_GSTATS: 3227 rc = ethtool_get_stats(dev, useraddr); 3228 break; 3229 case ETHTOOL_GPERMADDR: 3230 rc = ethtool_get_perm_addr(dev, useraddr); 3231 break; 3232 case ETHTOOL_GFLAGS: 3233 rc = ethtool_get_value(dev, useraddr, ethcmd, 3234 __ethtool_get_flags); 3235 break; 3236 case ETHTOOL_SFLAGS: 3237 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); 3238 break; 3239 case ETHTOOL_GPFLAGS: 3240 rc = ethtool_get_value(dev, useraddr, ethcmd, 3241 dev->ethtool_ops->get_priv_flags); 3242 if (!rc) 3243 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL); 3244 break; 3245 case ETHTOOL_SPFLAGS: 3246 rc = ethtool_set_value(dev, useraddr, 3247 dev->ethtool_ops->set_priv_flags); 3248 break; 3249 case ETHTOOL_GRXFH: 3250 case ETHTOOL_GRXRINGS: 3251 case ETHTOOL_GRXCLSRLCNT: 3252 case ETHTOOL_GRXCLSRULE: 3253 case ETHTOOL_GRXCLSRLALL: 3254 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); 3255 break; 3256 case ETHTOOL_SRXFH: 3257 case ETHTOOL_SRXCLSRLDEL: 3258 case ETHTOOL_SRXCLSRLINS: 3259 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); 3260 break; 3261 case ETHTOOL_FLASHDEV: 3262 rc = ethtool_flash_device(dev, devlink_state); 3263 break; 3264 case ETHTOOL_RESET: 3265 rc = ethtool_reset(dev, useraddr); 3266 break; 3267 case ETHTOOL_GSSET_INFO: 3268 rc = ethtool_get_sset_info(dev, useraddr); 3269 break; 3270 case ETHTOOL_GRXFHINDIR: 3271 rc = ethtool_get_rxfh_indir(dev, useraddr); 3272 break; 3273 case ETHTOOL_SRXFHINDIR: 3274 rc = ethtool_set_rxfh_indir(dev, useraddr); 3275 break; 3276 case ETHTOOL_GRSSH: 3277 rc = ethtool_get_rxfh(dev, useraddr); 3278 break; 3279 case ETHTOOL_SRSSH: 3280 rc = ethtool_set_rxfh(dev, useraddr); 3281 break; 3282 case ETHTOOL_GFEATURES: 3283 rc = ethtool_get_features(dev, useraddr); 3284 break; 3285 case ETHTOOL_SFEATURES: 3286 rc = ethtool_set_features(dev, useraddr); 3287 break; 3288 case ETHTOOL_GTXCSUM: 3289 case ETHTOOL_GRXCSUM: 3290 case ETHTOOL_GSG: 3291 case ETHTOOL_GTSO: 3292 case ETHTOOL_GGSO: 3293 case ETHTOOL_GGRO: 3294 rc = ethtool_get_one_feature(dev, useraddr, ethcmd); 3295 break; 3296 case ETHTOOL_STXCSUM: 3297 case ETHTOOL_SRXCSUM: 3298 case ETHTOOL_SSG: 3299 case ETHTOOL_STSO: 3300 case ETHTOOL_SGSO: 3301 case ETHTOOL_SGRO: 3302 rc = ethtool_set_one_feature(dev, useraddr, ethcmd); 3303 break; 3304 case ETHTOOL_GCHANNELS: 3305 rc = ethtool_get_channels(dev, useraddr); 3306 break; 3307 case ETHTOOL_SCHANNELS: 3308 rc = ethtool_set_channels(dev, useraddr); 3309 break; 3310 case ETHTOOL_SET_DUMP: 3311 rc = ethtool_set_dump(dev, useraddr); 3312 break; 3313 case ETHTOOL_GET_DUMP_FLAG: 3314 rc = ethtool_get_dump_flag(dev, useraddr); 3315 break; 3316 case ETHTOOL_GET_DUMP_DATA: 3317 rc = ethtool_get_dump_data(dev, useraddr); 3318 break; 3319 case ETHTOOL_GET_TS_INFO: 3320 rc = ethtool_get_ts_info(dev, useraddr); 3321 break; 3322 case ETHTOOL_GMODULEINFO: 3323 rc = ethtool_get_module_info(dev, useraddr); 3324 break; 3325 case ETHTOOL_GMODULEEEPROM: 3326 rc = ethtool_get_module_eeprom(dev, useraddr); 3327 break; 3328 case ETHTOOL_GTUNABLE: 3329 rc = ethtool_get_tunable(dev, useraddr); 3330 break; 3331 case ETHTOOL_STUNABLE: 3332 rc = ethtool_set_tunable(dev, useraddr); 3333 break; 3334 case ETHTOOL_GPHYSTATS: 3335 rc = ethtool_get_phy_stats(dev, useraddr); 3336 break; 3337 case ETHTOOL_PERQUEUE: 3338 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); 3339 break; 3340 case ETHTOOL_GLINKSETTINGS: 3341 rc = ethtool_get_link_ksettings(dev, useraddr); 3342 break; 3343 case ETHTOOL_SLINKSETTINGS: 3344 rc = ethtool_set_link_ksettings(dev, useraddr); 3345 break; 3346 case ETHTOOL_PHY_GTUNABLE: 3347 rc = get_phy_tunable(dev, useraddr); 3348 break; 3349 case ETHTOOL_PHY_STUNABLE: 3350 rc = set_phy_tunable(dev, useraddr); 3351 break; 3352 case ETHTOOL_GFECPARAM: 3353 rc = ethtool_get_fecparam(dev, useraddr); 3354 break; 3355 case ETHTOOL_SFECPARAM: 3356 rc = ethtool_set_fecparam(dev, useraddr); 3357 break; 3358 default: 3359 rc = -EOPNOTSUPP; 3360 } 3361 3362 if (dev->ethtool_ops->complete) 3363 dev->ethtool_ops->complete(dev); 3364 3365 if (old_features != dev->features) 3366 netdev_features_change(dev); 3367 out: 3368 if (dev->dev.parent) 3369 pm_runtime_put(dev->dev.parent); 3370 3371 return rc; 3372 } 3373 3374 int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) 3375 { 3376 struct ethtool_devlink_compat *state; 3377 u32 ethcmd; 3378 int rc; 3379 3380 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) 3381 return -EFAULT; 3382 3383 state = kzalloc(sizeof(*state), GFP_KERNEL); 3384 if (!state) 3385 return -ENOMEM; 3386 3387 switch (ethcmd) { 3388 case ETHTOOL_FLASHDEV: 3389 if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { 3390 rc = -EFAULT; 3391 goto exit_free; 3392 } 3393 state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; 3394 break; 3395 } 3396 3397 rtnl_lock(); 3398 rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); 3399 rtnl_unlock(); 3400 if (rc) 3401 goto exit_free; 3402 3403 switch (ethcmd) { 3404 case ETHTOOL_FLASHDEV: 3405 if (state->devlink) 3406 rc = devlink_compat_flash_update(state->devlink, 3407 state->efl.data); 3408 break; 3409 case ETHTOOL_GDRVINFO: 3410 if (state->devlink) 3411 devlink_compat_running_version(state->devlink, 3412 state->info.fw_version, 3413 sizeof(state->info.fw_version)); 3414 if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { 3415 rc = -EFAULT; 3416 goto exit_free; 3417 } 3418 break; 3419 } 3420 3421 exit_free: 3422 if (state->devlink) 3423 devlink_put(state->devlink); 3424 kfree(state); 3425 return rc; 3426 } 3427 3428 struct ethtool_rx_flow_key { 3429 struct flow_dissector_key_basic basic; 3430 union { 3431 struct flow_dissector_key_ipv4_addrs ipv4; 3432 struct flow_dissector_key_ipv6_addrs ipv6; 3433 }; 3434 struct flow_dissector_key_ports tp; 3435 struct flow_dissector_key_ip ip; 3436 struct flow_dissector_key_vlan vlan; 3437 struct flow_dissector_key_eth_addrs eth_addrs; 3438 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ 3439 3440 struct ethtool_rx_flow_match { 3441 struct flow_dissector dissector; 3442 struct ethtool_rx_flow_key key; 3443 struct ethtool_rx_flow_key mask; 3444 }; 3445 3446 struct ethtool_rx_flow_rule * 3447 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) 3448 { 3449 const struct ethtool_rx_flow_spec *fs = input->fs; 3450 struct ethtool_rx_flow_match *match; 3451 struct ethtool_rx_flow_rule *flow; 3452 struct flow_action_entry *act; 3453 3454 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + 3455 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); 3456 if (!flow) 3457 return ERR_PTR(-ENOMEM); 3458 3459 /* ethtool_rx supports only one single action per rule. */ 3460 flow->rule = flow_rule_alloc(1); 3461 if (!flow->rule) { 3462 kfree(flow); 3463 return ERR_PTR(-ENOMEM); 3464 } 3465 3466 match = (struct ethtool_rx_flow_match *)flow->priv; 3467 flow->rule->match.dissector = &match->dissector; 3468 flow->rule->match.mask = &match->mask; 3469 flow->rule->match.key = &match->key; 3470 3471 match->mask.basic.n_proto = htons(0xffff); 3472 3473 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3474 case ETHER_FLOW: { 3475 const struct ethhdr *ether_spec, *ether_m_spec; 3476 3477 ether_spec = &fs->h_u.ether_spec; 3478 ether_m_spec = &fs->m_u.ether_spec; 3479 3480 if (!is_zero_ether_addr(ether_m_spec->h_source)) { 3481 ether_addr_copy(match->key.eth_addrs.src, 3482 ether_spec->h_source); 3483 ether_addr_copy(match->mask.eth_addrs.src, 3484 ether_m_spec->h_source); 3485 } 3486 if (!is_zero_ether_addr(ether_m_spec->h_dest)) { 3487 ether_addr_copy(match->key.eth_addrs.dst, 3488 ether_spec->h_dest); 3489 ether_addr_copy(match->mask.eth_addrs.dst, 3490 ether_m_spec->h_dest); 3491 } 3492 if (ether_m_spec->h_proto) { 3493 match->key.basic.n_proto = ether_spec->h_proto; 3494 match->mask.basic.n_proto = ether_m_spec->h_proto; 3495 } 3496 } 3497 break; 3498 case TCP_V4_FLOW: 3499 case UDP_V4_FLOW: { 3500 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; 3501 3502 match->key.basic.n_proto = htons(ETH_P_IP); 3503 3504 v4_spec = &fs->h_u.tcp_ip4_spec; 3505 v4_m_spec = &fs->m_u.tcp_ip4_spec; 3506 3507 if (v4_m_spec->ip4src) { 3508 match->key.ipv4.src = v4_spec->ip4src; 3509 match->mask.ipv4.src = v4_m_spec->ip4src; 3510 } 3511 if (v4_m_spec->ip4dst) { 3512 match->key.ipv4.dst = v4_spec->ip4dst; 3513 match->mask.ipv4.dst = v4_m_spec->ip4dst; 3514 } 3515 if (v4_m_spec->ip4src || 3516 v4_m_spec->ip4dst) { 3517 match->dissector.used_keys |= 3518 BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS); 3519 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = 3520 offsetof(struct ethtool_rx_flow_key, ipv4); 3521 } 3522 if (v4_m_spec->psrc) { 3523 match->key.tp.src = v4_spec->psrc; 3524 match->mask.tp.src = v4_m_spec->psrc; 3525 } 3526 if (v4_m_spec->pdst) { 3527 match->key.tp.dst = v4_spec->pdst; 3528 match->mask.tp.dst = v4_m_spec->pdst; 3529 } 3530 if (v4_m_spec->psrc || 3531 v4_m_spec->pdst) { 3532 match->dissector.used_keys |= 3533 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3534 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3535 offsetof(struct ethtool_rx_flow_key, tp); 3536 } 3537 if (v4_m_spec->tos) { 3538 match->key.ip.tos = v4_spec->tos; 3539 match->mask.ip.tos = v4_m_spec->tos; 3540 match->dissector.used_keys |= 3541 BIT(FLOW_DISSECTOR_KEY_IP); 3542 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3543 offsetof(struct ethtool_rx_flow_key, ip); 3544 } 3545 } 3546 break; 3547 case TCP_V6_FLOW: 3548 case UDP_V6_FLOW: { 3549 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; 3550 3551 match->key.basic.n_proto = htons(ETH_P_IPV6); 3552 3553 v6_spec = &fs->h_u.tcp_ip6_spec; 3554 v6_m_spec = &fs->m_u.tcp_ip6_spec; 3555 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) { 3556 memcpy(&match->key.ipv6.src, v6_spec->ip6src, 3557 sizeof(match->key.ipv6.src)); 3558 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, 3559 sizeof(match->mask.ipv6.src)); 3560 } 3561 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3562 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, 3563 sizeof(match->key.ipv6.dst)); 3564 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, 3565 sizeof(match->mask.ipv6.dst)); 3566 } 3567 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) || 3568 !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3569 match->dissector.used_keys |= 3570 BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS); 3571 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = 3572 offsetof(struct ethtool_rx_flow_key, ipv6); 3573 } 3574 if (v6_m_spec->psrc) { 3575 match->key.tp.src = v6_spec->psrc; 3576 match->mask.tp.src = v6_m_spec->psrc; 3577 } 3578 if (v6_m_spec->pdst) { 3579 match->key.tp.dst = v6_spec->pdst; 3580 match->mask.tp.dst = v6_m_spec->pdst; 3581 } 3582 if (v6_m_spec->psrc || 3583 v6_m_spec->pdst) { 3584 match->dissector.used_keys |= 3585 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3586 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3587 offsetof(struct ethtool_rx_flow_key, tp); 3588 } 3589 if (v6_m_spec->tclass) { 3590 match->key.ip.tos = v6_spec->tclass; 3591 match->mask.ip.tos = v6_m_spec->tclass; 3592 match->dissector.used_keys |= 3593 BIT_ULL(FLOW_DISSECTOR_KEY_IP); 3594 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3595 offsetof(struct ethtool_rx_flow_key, ip); 3596 } 3597 } 3598 break; 3599 default: 3600 ethtool_rx_flow_rule_destroy(flow); 3601 return ERR_PTR(-EINVAL); 3602 } 3603 3604 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3605 case TCP_V4_FLOW: 3606 case TCP_V6_FLOW: 3607 match->key.basic.ip_proto = IPPROTO_TCP; 3608 match->mask.basic.ip_proto = 0xff; 3609 break; 3610 case UDP_V4_FLOW: 3611 case UDP_V6_FLOW: 3612 match->key.basic.ip_proto = IPPROTO_UDP; 3613 match->mask.basic.ip_proto = 0xff; 3614 break; 3615 } 3616 3617 match->dissector.used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_BASIC); 3618 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = 3619 offsetof(struct ethtool_rx_flow_key, basic); 3620 3621 if (fs->flow_type & FLOW_EXT) { 3622 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3623 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3624 3625 if (ext_m_spec->vlan_etype) { 3626 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; 3627 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; 3628 } 3629 3630 if (ext_m_spec->vlan_tci) { 3631 match->key.vlan.vlan_id = 3632 ntohs(ext_h_spec->vlan_tci) & 0x0fff; 3633 match->mask.vlan.vlan_id = 3634 ntohs(ext_m_spec->vlan_tci) & 0x0fff; 3635 3636 match->key.vlan.vlan_dei = 3637 !!(ext_h_spec->vlan_tci & htons(0x1000)); 3638 match->mask.vlan.vlan_dei = 3639 !!(ext_m_spec->vlan_tci & htons(0x1000)); 3640 3641 match->key.vlan.vlan_priority = 3642 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; 3643 match->mask.vlan.vlan_priority = 3644 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; 3645 } 3646 3647 if (ext_m_spec->vlan_etype || 3648 ext_m_spec->vlan_tci) { 3649 match->dissector.used_keys |= 3650 BIT_ULL(FLOW_DISSECTOR_KEY_VLAN); 3651 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = 3652 offsetof(struct ethtool_rx_flow_key, vlan); 3653 } 3654 } 3655 if (fs->flow_type & FLOW_MAC_EXT) { 3656 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3657 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3658 3659 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, 3660 ETH_ALEN); 3661 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, 3662 ETH_ALEN); 3663 3664 match->dissector.used_keys |= 3665 BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS); 3666 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = 3667 offsetof(struct ethtool_rx_flow_key, eth_addrs); 3668 } 3669 3670 act = &flow->rule->action.entries[0]; 3671 switch (fs->ring_cookie) { 3672 case RX_CLS_FLOW_DISC: 3673 act->id = FLOW_ACTION_DROP; 3674 break; 3675 case RX_CLS_FLOW_WAKE: 3676 act->id = FLOW_ACTION_WAKE; 3677 break; 3678 default: 3679 act->id = FLOW_ACTION_QUEUE; 3680 if (fs->flow_type & FLOW_RSS) 3681 act->queue.ctx = input->rss_ctx; 3682 3683 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); 3684 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); 3685 break; 3686 } 3687 3688 return flow; 3689 } 3690 EXPORT_SYMBOL(ethtool_rx_flow_rule_create); 3691 3692 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) 3693 { 3694 kfree(flow->rule); 3695 kfree(flow); 3696 } 3697 EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); 3698