1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * net/core/ethtool.c - Ethtool ioctl handler 4 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx> 5 * 6 * This file is where we call all the ethtool_ops commands to get 7 * the information ethtool needs. 8 */ 9 10 #include <linux/compat.h> 11 #include <linux/etherdevice.h> 12 #include <linux/module.h> 13 #include <linux/types.h> 14 #include <linux/capability.h> 15 #include <linux/errno.h> 16 #include <linux/ethtool.h> 17 #include <linux/netdevice.h> 18 #include <linux/net_tstamp.h> 19 #include <linux/phy.h> 20 #include <linux/bitops.h> 21 #include <linux/uaccess.h> 22 #include <linux/vmalloc.h> 23 #include <linux/sfp.h> 24 #include <linux/slab.h> 25 #include <linux/rtnetlink.h> 26 #include <linux/sched/signal.h> 27 #include <linux/net.h> 28 #include <linux/pm_runtime.h> 29 #include <linux/utsname.h> 30 #include <net/devlink.h> 31 #include <net/ipv6.h> 32 #include <net/xdp_sock_drv.h> 33 #include <net/flow_offload.h> 34 #include <linux/ethtool_netlink.h> 35 #include "common.h" 36 37 /* State held across locks and calls for commands which have devlink fallback */ 38 struct ethtool_devlink_compat { 39 struct devlink *devlink; 40 union { 41 struct ethtool_flash efl; 42 struct ethtool_drvinfo info; 43 }; 44 }; 45 46 static struct devlink *netdev_to_devlink_get(struct net_device *dev) 47 { 48 if (!dev->devlink_port) 49 return NULL; 50 return devlink_try_get(dev->devlink_port->devlink); 51 } 52 53 /* 54 * Some useful ethtool_ops methods that're device independent. 55 * If we find that all drivers want to do the same thing here, 56 * we can turn these into dev_() function calls. 57 */ 58 59 u32 ethtool_op_get_link(struct net_device *dev) 60 { 61 /* Synchronize carrier state with link watch, see also rtnl_getlink() */ 62 linkwatch_sync_dev(dev); 63 64 return netif_carrier_ok(dev) ? 1 : 0; 65 } 66 EXPORT_SYMBOL(ethtool_op_get_link); 67 68 int ethtool_op_get_ts_info(struct net_device *dev, 69 struct kernel_ethtool_ts_info *info) 70 { 71 info->so_timestamping = 72 SOF_TIMESTAMPING_TX_SOFTWARE | 73 SOF_TIMESTAMPING_RX_SOFTWARE | 74 SOF_TIMESTAMPING_SOFTWARE; 75 info->phc_index = -1; 76 return 0; 77 } 78 EXPORT_SYMBOL(ethtool_op_get_ts_info); 79 80 /* Handlers for each ethtool command */ 81 82 static int ethtool_get_features(struct net_device *dev, void __user *useraddr) 83 { 84 struct ethtool_gfeatures cmd = { 85 .cmd = ETHTOOL_GFEATURES, 86 .size = ETHTOOL_DEV_FEATURE_WORDS, 87 }; 88 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 89 u32 __user *sizeaddr; 90 u32 copy_size; 91 int i; 92 93 /* in case feature bits run out again */ 94 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); 95 96 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 97 features[i].available = (u32)(dev->hw_features >> (32 * i)); 98 features[i].requested = (u32)(dev->wanted_features >> (32 * i)); 99 features[i].active = (u32)(dev->features >> (32 * i)); 100 features[i].never_changed = 101 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); 102 } 103 104 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); 105 if (get_user(copy_size, sizeaddr)) 106 return -EFAULT; 107 108 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) 109 copy_size = ETHTOOL_DEV_FEATURE_WORDS; 110 111 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 112 return -EFAULT; 113 useraddr += sizeof(cmd); 114 if (copy_to_user(useraddr, features, 115 array_size(copy_size, sizeof(*features)))) 116 return -EFAULT; 117 118 return 0; 119 } 120 121 static int ethtool_set_features(struct net_device *dev, void __user *useraddr) 122 { 123 struct ethtool_sfeatures cmd; 124 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 125 netdev_features_t wanted = 0, valid = 0; 126 int i, ret = 0; 127 128 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 129 return -EFAULT; 130 useraddr += sizeof(cmd); 131 132 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) 133 return -EINVAL; 134 135 if (copy_from_user(features, useraddr, sizeof(features))) 136 return -EFAULT; 137 138 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 139 valid |= (netdev_features_t)features[i].valid << (32 * i); 140 wanted |= (netdev_features_t)features[i].requested << (32 * i); 141 } 142 143 if (valid & ~NETIF_F_ETHTOOL_BITS) 144 return -EINVAL; 145 146 if (valid & ~dev->hw_features) { 147 valid &= dev->hw_features; 148 ret |= ETHTOOL_F_UNSUPPORTED; 149 } 150 151 dev->wanted_features &= ~valid; 152 dev->wanted_features |= wanted & valid; 153 __netdev_update_features(dev); 154 155 if ((dev->wanted_features ^ dev->features) & valid) 156 ret |= ETHTOOL_F_WISH; 157 158 return ret; 159 } 160 161 static int __ethtool_get_sset_count(struct net_device *dev, int sset) 162 { 163 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 164 const struct ethtool_ops *ops = dev->ethtool_ops; 165 166 if (sset == ETH_SS_FEATURES) 167 return ARRAY_SIZE(netdev_features_strings); 168 169 if (sset == ETH_SS_RSS_HASH_FUNCS) 170 return ARRAY_SIZE(rss_hash_func_strings); 171 172 if (sset == ETH_SS_TUNABLES) 173 return ARRAY_SIZE(tunable_strings); 174 175 if (sset == ETH_SS_PHY_TUNABLES) 176 return ARRAY_SIZE(phy_tunable_strings); 177 178 if (sset == ETH_SS_PHY_STATS && dev->phydev && 179 !ops->get_ethtool_phy_stats && 180 phy_ops && phy_ops->get_sset_count) 181 return phy_ops->get_sset_count(dev->phydev); 182 183 if (sset == ETH_SS_LINK_MODES) 184 return __ETHTOOL_LINK_MODE_MASK_NBITS; 185 186 if (ops->get_sset_count && ops->get_strings) 187 return ops->get_sset_count(dev, sset); 188 else 189 return -EOPNOTSUPP; 190 } 191 192 static void __ethtool_get_strings(struct net_device *dev, 193 u32 stringset, u8 *data) 194 { 195 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 196 const struct ethtool_ops *ops = dev->ethtool_ops; 197 198 if (stringset == ETH_SS_FEATURES) 199 memcpy(data, netdev_features_strings, 200 sizeof(netdev_features_strings)); 201 else if (stringset == ETH_SS_RSS_HASH_FUNCS) 202 memcpy(data, rss_hash_func_strings, 203 sizeof(rss_hash_func_strings)); 204 else if (stringset == ETH_SS_TUNABLES) 205 memcpy(data, tunable_strings, sizeof(tunable_strings)); 206 else if (stringset == ETH_SS_PHY_TUNABLES) 207 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); 208 else if (stringset == ETH_SS_PHY_STATS && dev->phydev && 209 !ops->get_ethtool_phy_stats && phy_ops && 210 phy_ops->get_strings) 211 phy_ops->get_strings(dev->phydev, data); 212 else if (stringset == ETH_SS_LINK_MODES) 213 memcpy(data, link_mode_names, 214 __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN); 215 else 216 /* ops->get_strings is valid because checked earlier */ 217 ops->get_strings(dev, stringset, data); 218 } 219 220 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) 221 { 222 /* feature masks of legacy discrete ethtool ops */ 223 224 switch (eth_cmd) { 225 case ETHTOOL_GTXCSUM: 226 case ETHTOOL_STXCSUM: 227 return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC | 228 NETIF_F_SCTP_CRC; 229 case ETHTOOL_GRXCSUM: 230 case ETHTOOL_SRXCSUM: 231 return NETIF_F_RXCSUM; 232 case ETHTOOL_GSG: 233 case ETHTOOL_SSG: 234 return NETIF_F_SG | NETIF_F_FRAGLIST; 235 case ETHTOOL_GTSO: 236 case ETHTOOL_STSO: 237 return NETIF_F_ALL_TSO; 238 case ETHTOOL_GGSO: 239 case ETHTOOL_SGSO: 240 return NETIF_F_GSO; 241 case ETHTOOL_GGRO: 242 case ETHTOOL_SGRO: 243 return NETIF_F_GRO; 244 default: 245 BUG(); 246 } 247 } 248 249 static int ethtool_get_one_feature(struct net_device *dev, 250 char __user *useraddr, u32 ethcmd) 251 { 252 netdev_features_t mask = ethtool_get_feature_mask(ethcmd); 253 struct ethtool_value edata = { 254 .cmd = ethcmd, 255 .data = !!(dev->features & mask), 256 }; 257 258 if (copy_to_user(useraddr, &edata, sizeof(edata))) 259 return -EFAULT; 260 return 0; 261 } 262 263 static int ethtool_set_one_feature(struct net_device *dev, 264 void __user *useraddr, u32 ethcmd) 265 { 266 struct ethtool_value edata; 267 netdev_features_t mask; 268 269 if (copy_from_user(&edata, useraddr, sizeof(edata))) 270 return -EFAULT; 271 272 mask = ethtool_get_feature_mask(ethcmd); 273 mask &= dev->hw_features; 274 if (!mask) 275 return -EOPNOTSUPP; 276 277 if (edata.data) 278 dev->wanted_features |= mask; 279 else 280 dev->wanted_features &= ~mask; 281 282 __netdev_update_features(dev); 283 284 return 0; 285 } 286 287 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ 288 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) 289 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ 290 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ 291 NETIF_F_RXHASH) 292 293 static u32 __ethtool_get_flags(struct net_device *dev) 294 { 295 u32 flags = 0; 296 297 if (dev->features & NETIF_F_LRO) 298 flags |= ETH_FLAG_LRO; 299 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 300 flags |= ETH_FLAG_RXVLAN; 301 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) 302 flags |= ETH_FLAG_TXVLAN; 303 if (dev->features & NETIF_F_NTUPLE) 304 flags |= ETH_FLAG_NTUPLE; 305 if (dev->features & NETIF_F_RXHASH) 306 flags |= ETH_FLAG_RXHASH; 307 308 return flags; 309 } 310 311 static int __ethtool_set_flags(struct net_device *dev, u32 data) 312 { 313 netdev_features_t features = 0, changed; 314 315 if (data & ~ETH_ALL_FLAGS) 316 return -EINVAL; 317 318 if (data & ETH_FLAG_LRO) 319 features |= NETIF_F_LRO; 320 if (data & ETH_FLAG_RXVLAN) 321 features |= NETIF_F_HW_VLAN_CTAG_RX; 322 if (data & ETH_FLAG_TXVLAN) 323 features |= NETIF_F_HW_VLAN_CTAG_TX; 324 if (data & ETH_FLAG_NTUPLE) 325 features |= NETIF_F_NTUPLE; 326 if (data & ETH_FLAG_RXHASH) 327 features |= NETIF_F_RXHASH; 328 329 /* allow changing only bits set in hw_features */ 330 changed = (features ^ dev->features) & ETH_ALL_FEATURES; 331 if (changed & ~dev->hw_features) 332 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; 333 334 dev->wanted_features = 335 (dev->wanted_features & ~changed) | (features & changed); 336 337 __netdev_update_features(dev); 338 339 return 0; 340 } 341 342 /* Given two link masks, AND them together and save the result in dst. */ 343 void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, 344 struct ethtool_link_ksettings *src) 345 { 346 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); 347 unsigned int idx = 0; 348 349 for (; idx < size; idx++) { 350 dst->link_modes.supported[idx] &= 351 src->link_modes.supported[idx]; 352 dst->link_modes.advertising[idx] &= 353 src->link_modes.advertising[idx]; 354 } 355 } 356 EXPORT_SYMBOL(ethtool_intersect_link_masks); 357 358 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, 359 u32 legacy_u32) 360 { 361 linkmode_zero(dst); 362 dst[0] = legacy_u32; 363 } 364 EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); 365 366 /* return false if src had higher bits set. lower bits always updated. */ 367 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, 368 const unsigned long *src) 369 { 370 *legacy_u32 = src[0]; 371 return find_next_bit(src, __ETHTOOL_LINK_MODE_MASK_NBITS, 32) == 372 __ETHTOOL_LINK_MODE_MASK_NBITS; 373 } 374 EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); 375 376 /* return false if ksettings link modes had higher bits 377 * set. legacy_settings always updated (best effort) 378 */ 379 static bool 380 convert_link_ksettings_to_legacy_settings( 381 struct ethtool_cmd *legacy_settings, 382 const struct ethtool_link_ksettings *link_ksettings) 383 { 384 bool retval = true; 385 386 memset(legacy_settings, 0, sizeof(*legacy_settings)); 387 /* this also clears the deprecated fields in legacy structure: 388 * __u8 transceiver; 389 * __u32 maxtxpkt; 390 * __u32 maxrxpkt; 391 */ 392 393 retval &= ethtool_convert_link_mode_to_legacy_u32( 394 &legacy_settings->supported, 395 link_ksettings->link_modes.supported); 396 retval &= ethtool_convert_link_mode_to_legacy_u32( 397 &legacy_settings->advertising, 398 link_ksettings->link_modes.advertising); 399 retval &= ethtool_convert_link_mode_to_legacy_u32( 400 &legacy_settings->lp_advertising, 401 link_ksettings->link_modes.lp_advertising); 402 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); 403 legacy_settings->duplex 404 = link_ksettings->base.duplex; 405 legacy_settings->port 406 = link_ksettings->base.port; 407 legacy_settings->phy_address 408 = link_ksettings->base.phy_address; 409 legacy_settings->autoneg 410 = link_ksettings->base.autoneg; 411 legacy_settings->mdio_support 412 = link_ksettings->base.mdio_support; 413 legacy_settings->eth_tp_mdix 414 = link_ksettings->base.eth_tp_mdix; 415 legacy_settings->eth_tp_mdix_ctrl 416 = link_ksettings->base.eth_tp_mdix_ctrl; 417 legacy_settings->transceiver 418 = link_ksettings->base.transceiver; 419 return retval; 420 } 421 422 /* number of 32-bit words to store the user's link mode bitmaps */ 423 #define __ETHTOOL_LINK_MODE_MASK_NU32 \ 424 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) 425 426 /* layout of the struct passed from/to userland */ 427 struct ethtool_link_usettings { 428 struct ethtool_link_settings base; 429 struct { 430 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; 431 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 432 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 433 } link_modes; 434 }; 435 436 /* Internal kernel helper to query a device ethtool_link_settings. */ 437 int __ethtool_get_link_ksettings(struct net_device *dev, 438 struct ethtool_link_ksettings *link_ksettings) 439 { 440 ASSERT_RTNL(); 441 442 if (!dev->ethtool_ops->get_link_ksettings) 443 return -EOPNOTSUPP; 444 445 if (!netif_device_present(dev)) 446 return -ENODEV; 447 448 memset(link_ksettings, 0, sizeof(*link_ksettings)); 449 return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings); 450 } 451 EXPORT_SYMBOL(__ethtool_get_link_ksettings); 452 453 /* convert ethtool_link_usettings in user space to a kernel internal 454 * ethtool_link_ksettings. return 0 on success, errno on error. 455 */ 456 static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, 457 const void __user *from) 458 { 459 struct ethtool_link_usettings link_usettings; 460 461 if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) 462 return -EFAULT; 463 464 memcpy(&to->base, &link_usettings.base, sizeof(to->base)); 465 bitmap_from_arr32(to->link_modes.supported, 466 link_usettings.link_modes.supported, 467 __ETHTOOL_LINK_MODE_MASK_NBITS); 468 bitmap_from_arr32(to->link_modes.advertising, 469 link_usettings.link_modes.advertising, 470 __ETHTOOL_LINK_MODE_MASK_NBITS); 471 bitmap_from_arr32(to->link_modes.lp_advertising, 472 link_usettings.link_modes.lp_advertising, 473 __ETHTOOL_LINK_MODE_MASK_NBITS); 474 475 return 0; 476 } 477 478 /* Check if the user is trying to change anything besides speed/duplex */ 479 bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd) 480 { 481 struct ethtool_link_settings base2 = {}; 482 483 base2.speed = cmd->base.speed; 484 base2.port = PORT_OTHER; 485 base2.duplex = cmd->base.duplex; 486 base2.cmd = cmd->base.cmd; 487 base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords; 488 489 return !memcmp(&base2, &cmd->base, sizeof(base2)) && 490 bitmap_empty(cmd->link_modes.supported, 491 __ETHTOOL_LINK_MODE_MASK_NBITS) && 492 bitmap_empty(cmd->link_modes.lp_advertising, 493 __ETHTOOL_LINK_MODE_MASK_NBITS); 494 } 495 496 /* convert a kernel internal ethtool_link_ksettings to 497 * ethtool_link_usettings in user space. return 0 on success, errno on 498 * error. 499 */ 500 static int 501 store_link_ksettings_for_user(void __user *to, 502 const struct ethtool_link_ksettings *from) 503 { 504 struct ethtool_link_usettings link_usettings; 505 506 memcpy(&link_usettings, from, sizeof(link_usettings)); 507 bitmap_to_arr32(link_usettings.link_modes.supported, 508 from->link_modes.supported, 509 __ETHTOOL_LINK_MODE_MASK_NBITS); 510 bitmap_to_arr32(link_usettings.link_modes.advertising, 511 from->link_modes.advertising, 512 __ETHTOOL_LINK_MODE_MASK_NBITS); 513 bitmap_to_arr32(link_usettings.link_modes.lp_advertising, 514 from->link_modes.lp_advertising, 515 __ETHTOOL_LINK_MODE_MASK_NBITS); 516 517 if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) 518 return -EFAULT; 519 520 return 0; 521 } 522 523 /* Query device for its ethtool_link_settings. */ 524 static int ethtool_get_link_ksettings(struct net_device *dev, 525 void __user *useraddr) 526 { 527 int err = 0; 528 struct ethtool_link_ksettings link_ksettings; 529 530 ASSERT_RTNL(); 531 if (!dev->ethtool_ops->get_link_ksettings) 532 return -EOPNOTSUPP; 533 534 /* handle bitmap nbits handshake */ 535 if (copy_from_user(&link_ksettings.base, useraddr, 536 sizeof(link_ksettings.base))) 537 return -EFAULT; 538 539 if (__ETHTOOL_LINK_MODE_MASK_NU32 540 != link_ksettings.base.link_mode_masks_nwords) { 541 /* wrong link mode nbits requested */ 542 memset(&link_ksettings, 0, sizeof(link_ksettings)); 543 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 544 /* send back number of words required as negative val */ 545 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, 546 "need too many bits for link modes!"); 547 link_ksettings.base.link_mode_masks_nwords 548 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); 549 550 /* copy the base fields back to user, not the link 551 * mode bitmaps 552 */ 553 if (copy_to_user(useraddr, &link_ksettings.base, 554 sizeof(link_ksettings.base))) 555 return -EFAULT; 556 557 return 0; 558 } 559 560 /* handshake successful: user/kernel agree on 561 * link_mode_masks_nwords 562 */ 563 564 memset(&link_ksettings, 0, sizeof(link_ksettings)); 565 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 566 if (err < 0) 567 return err; 568 569 /* make sure we tell the right values to user */ 570 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 571 link_ksettings.base.link_mode_masks_nwords 572 = __ETHTOOL_LINK_MODE_MASK_NU32; 573 link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED; 574 link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED; 575 link_ksettings.base.rate_matching = RATE_MATCH_NONE; 576 577 return store_link_ksettings_for_user(useraddr, &link_ksettings); 578 } 579 580 /* Update device ethtool_link_settings. */ 581 static int ethtool_set_link_ksettings(struct net_device *dev, 582 void __user *useraddr) 583 { 584 struct ethtool_link_ksettings link_ksettings = {}; 585 int err; 586 587 ASSERT_RTNL(); 588 589 if (!dev->ethtool_ops->set_link_ksettings) 590 return -EOPNOTSUPP; 591 592 /* make sure nbits field has expected value */ 593 if (copy_from_user(&link_ksettings.base, useraddr, 594 sizeof(link_ksettings.base))) 595 return -EFAULT; 596 597 if (__ETHTOOL_LINK_MODE_MASK_NU32 598 != link_ksettings.base.link_mode_masks_nwords) 599 return -EINVAL; 600 601 /* copy the whole structure, now that we know it has expected 602 * format 603 */ 604 err = load_link_ksettings_from_user(&link_ksettings, useraddr); 605 if (err) 606 return err; 607 608 /* re-check nwords field, just in case */ 609 if (__ETHTOOL_LINK_MODE_MASK_NU32 610 != link_ksettings.base.link_mode_masks_nwords) 611 return -EINVAL; 612 613 if (link_ksettings.base.master_slave_cfg || 614 link_ksettings.base.master_slave_state) 615 return -EINVAL; 616 617 err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 618 if (err >= 0) { 619 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); 620 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); 621 } 622 return err; 623 } 624 625 int ethtool_virtdev_set_link_ksettings(struct net_device *dev, 626 const struct ethtool_link_ksettings *cmd, 627 u32 *dev_speed, u8 *dev_duplex) 628 { 629 u32 speed; 630 u8 duplex; 631 632 speed = cmd->base.speed; 633 duplex = cmd->base.duplex; 634 /* don't allow custom speed and duplex */ 635 if (!ethtool_validate_speed(speed) || 636 !ethtool_validate_duplex(duplex) || 637 !ethtool_virtdev_validate_cmd(cmd)) 638 return -EINVAL; 639 *dev_speed = speed; 640 *dev_duplex = duplex; 641 642 return 0; 643 } 644 EXPORT_SYMBOL(ethtool_virtdev_set_link_ksettings); 645 646 /* Query device for its ethtool_cmd settings. 647 * 648 * Backward compatibility note: for compatibility with legacy ethtool, this is 649 * now implemented via get_link_ksettings. When driver reports higher link mode 650 * bits, a kernel warning is logged once (with name of 1st driver/device) to 651 * recommend user to upgrade ethtool, but the command is successful (only the 652 * lower link mode bits reported back to user). Deprecated fields from 653 * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero. 654 */ 655 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) 656 { 657 struct ethtool_link_ksettings link_ksettings; 658 struct ethtool_cmd cmd; 659 int err; 660 661 ASSERT_RTNL(); 662 if (!dev->ethtool_ops->get_link_ksettings) 663 return -EOPNOTSUPP; 664 665 if (dev->ethtool->module_fw_flash_in_progress) 666 return -EBUSY; 667 668 memset(&link_ksettings, 0, sizeof(link_ksettings)); 669 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 670 if (err < 0) 671 return err; 672 convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings); 673 674 /* send a sensible cmd tag back to user */ 675 cmd.cmd = ETHTOOL_GSET; 676 677 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 678 return -EFAULT; 679 680 return 0; 681 } 682 683 /* Update device link settings with given ethtool_cmd. 684 * 685 * Backward compatibility note: for compatibility with legacy ethtool, this is 686 * now always implemented via set_link_settings. When user's request updates 687 * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel 688 * warning is logged once (with name of 1st driver/device) to recommend user to 689 * upgrade ethtool, and the request is rejected. 690 */ 691 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) 692 { 693 struct ethtool_link_ksettings link_ksettings; 694 struct ethtool_cmd cmd; 695 int ret; 696 697 ASSERT_RTNL(); 698 699 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 700 return -EFAULT; 701 if (!dev->ethtool_ops->set_link_ksettings) 702 return -EOPNOTSUPP; 703 704 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd)) 705 return -EINVAL; 706 link_ksettings.base.link_mode_masks_nwords = 707 __ETHTOOL_LINK_MODE_MASK_NU32; 708 ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 709 if (ret >= 0) { 710 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); 711 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); 712 } 713 return ret; 714 } 715 716 static int 717 ethtool_get_drvinfo(struct net_device *dev, struct ethtool_devlink_compat *rsp) 718 { 719 const struct ethtool_ops *ops = dev->ethtool_ops; 720 struct device *parent = dev->dev.parent; 721 722 rsp->info.cmd = ETHTOOL_GDRVINFO; 723 strscpy(rsp->info.version, init_uts_ns.name.release, 724 sizeof(rsp->info.version)); 725 if (ops->get_drvinfo) { 726 ops->get_drvinfo(dev, &rsp->info); 727 if (!rsp->info.bus_info[0] && parent) 728 strscpy(rsp->info.bus_info, dev_name(parent), 729 sizeof(rsp->info.bus_info)); 730 if (!rsp->info.driver[0] && parent && parent->driver) 731 strscpy(rsp->info.driver, parent->driver->name, 732 sizeof(rsp->info.driver)); 733 } else if (parent && parent->driver) { 734 strscpy(rsp->info.bus_info, dev_name(parent), 735 sizeof(rsp->info.bus_info)); 736 strscpy(rsp->info.driver, parent->driver->name, 737 sizeof(rsp->info.driver)); 738 } else if (dev->rtnl_link_ops) { 739 strscpy(rsp->info.driver, dev->rtnl_link_ops->kind, 740 sizeof(rsp->info.driver)); 741 } else { 742 return -EOPNOTSUPP; 743 } 744 745 /* 746 * this method of obtaining string set info is deprecated; 747 * Use ETHTOOL_GSSET_INFO instead. 748 */ 749 if (ops->get_sset_count) { 750 int rc; 751 752 rc = ops->get_sset_count(dev, ETH_SS_TEST); 753 if (rc >= 0) 754 rsp->info.testinfo_len = rc; 755 rc = ops->get_sset_count(dev, ETH_SS_STATS); 756 if (rc >= 0) 757 rsp->info.n_stats = rc; 758 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); 759 if (rc >= 0) 760 rsp->info.n_priv_flags = rc; 761 } 762 if (ops->get_regs_len) { 763 int ret = ops->get_regs_len(dev); 764 765 if (ret > 0) 766 rsp->info.regdump_len = ret; 767 } 768 769 if (ops->get_eeprom_len) 770 rsp->info.eedump_len = ops->get_eeprom_len(dev); 771 772 if (!rsp->info.fw_version[0]) 773 rsp->devlink = netdev_to_devlink_get(dev); 774 775 return 0; 776 } 777 778 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, 779 void __user *useraddr) 780 { 781 struct ethtool_sset_info info; 782 u64 sset_mask; 783 int i, idx = 0, n_bits = 0, ret, rc; 784 u32 *info_buf = NULL; 785 786 if (copy_from_user(&info, useraddr, sizeof(info))) 787 return -EFAULT; 788 789 /* store copy of mask, because we zero struct later on */ 790 sset_mask = info.sset_mask; 791 if (!sset_mask) 792 return 0; 793 794 /* calculate size of return buffer */ 795 n_bits = hweight64(sset_mask); 796 797 memset(&info, 0, sizeof(info)); 798 info.cmd = ETHTOOL_GSSET_INFO; 799 800 info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER); 801 if (!info_buf) 802 return -ENOMEM; 803 804 /* 805 * fill return buffer based on input bitmask and successful 806 * get_sset_count return 807 */ 808 for (i = 0; i < 64; i++) { 809 if (!(sset_mask & (1ULL << i))) 810 continue; 811 812 rc = __ethtool_get_sset_count(dev, i); 813 if (rc >= 0) { 814 info.sset_mask |= (1ULL << i); 815 info_buf[idx++] = rc; 816 } 817 } 818 819 ret = -EFAULT; 820 if (copy_to_user(useraddr, &info, sizeof(info))) 821 goto out; 822 823 useraddr += offsetof(struct ethtool_sset_info, data); 824 if (copy_to_user(useraddr, info_buf, array_size(idx, sizeof(u32)))) 825 goto out; 826 827 ret = 0; 828 829 out: 830 kfree(info_buf); 831 return ret; 832 } 833 834 static noinline_for_stack int 835 ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc, 836 const struct compat_ethtool_rxnfc __user *useraddr, 837 size_t size) 838 { 839 struct compat_ethtool_rxnfc crxnfc = {}; 840 841 /* We expect there to be holes between fs.m_ext and 842 * fs.ring_cookie and at the end of fs, but nowhere else. 843 * On non-x86, no conversion should be needed. 844 */ 845 BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) && 846 sizeof(struct compat_ethtool_rxnfc) != 847 sizeof(struct ethtool_rxnfc)); 848 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) + 849 sizeof(useraddr->fs.m_ext) != 850 offsetof(struct ethtool_rxnfc, fs.m_ext) + 851 sizeof(rxnfc->fs.m_ext)); 852 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) - 853 offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) != 854 offsetof(struct ethtool_rxnfc, fs.location) - 855 offsetof(struct ethtool_rxnfc, fs.ring_cookie)); 856 857 if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc)))) 858 return -EFAULT; 859 860 *rxnfc = (struct ethtool_rxnfc) { 861 .cmd = crxnfc.cmd, 862 .flow_type = crxnfc.flow_type, 863 .data = crxnfc.data, 864 .fs = { 865 .flow_type = crxnfc.fs.flow_type, 866 .h_u = crxnfc.fs.h_u, 867 .h_ext = crxnfc.fs.h_ext, 868 .m_u = crxnfc.fs.m_u, 869 .m_ext = crxnfc.fs.m_ext, 870 .ring_cookie = crxnfc.fs.ring_cookie, 871 .location = crxnfc.fs.location, 872 }, 873 .rule_cnt = crxnfc.rule_cnt, 874 }; 875 876 return 0; 877 } 878 879 static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc, 880 const void __user *useraddr, 881 size_t size) 882 { 883 if (compat_need_64bit_alignment_fixup()) 884 return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size); 885 886 if (copy_from_user(rxnfc, useraddr, size)) 887 return -EFAULT; 888 889 return 0; 890 } 891 892 static int ethtool_rxnfc_copy_to_compat(void __user *useraddr, 893 const struct ethtool_rxnfc *rxnfc, 894 size_t size, const u32 *rule_buf) 895 { 896 struct compat_ethtool_rxnfc crxnfc; 897 898 memset(&crxnfc, 0, sizeof(crxnfc)); 899 crxnfc = (struct compat_ethtool_rxnfc) { 900 .cmd = rxnfc->cmd, 901 .flow_type = rxnfc->flow_type, 902 .data = rxnfc->data, 903 .fs = { 904 .flow_type = rxnfc->fs.flow_type, 905 .h_u = rxnfc->fs.h_u, 906 .h_ext = rxnfc->fs.h_ext, 907 .m_u = rxnfc->fs.m_u, 908 .m_ext = rxnfc->fs.m_ext, 909 .ring_cookie = rxnfc->fs.ring_cookie, 910 .location = rxnfc->fs.location, 911 }, 912 .rule_cnt = rxnfc->rule_cnt, 913 }; 914 915 if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc)))) 916 return -EFAULT; 917 918 return 0; 919 } 920 921 static int ethtool_rxnfc_copy_struct(u32 cmd, struct ethtool_rxnfc *info, 922 size_t *info_size, void __user *useraddr) 923 { 924 /* struct ethtool_rxnfc was originally defined for 925 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 926 * members. User-space might still be using that 927 * definition. 928 */ 929 if (cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) 930 *info_size = (offsetof(struct ethtool_rxnfc, data) + 931 sizeof(info->data)); 932 933 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) 934 return -EFAULT; 935 936 if ((cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) && info->flow_type & FLOW_RSS) { 937 *info_size = sizeof(*info); 938 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) 939 return -EFAULT; 940 /* Since malicious users may modify the original data, 941 * we need to check whether FLOW_RSS is still requested. 942 */ 943 if (!(info->flow_type & FLOW_RSS)) 944 return -EINVAL; 945 } 946 947 if (info->cmd != cmd) 948 return -EINVAL; 949 950 return 0; 951 } 952 953 static int ethtool_rxnfc_copy_to_user(void __user *useraddr, 954 const struct ethtool_rxnfc *rxnfc, 955 size_t size, const u32 *rule_buf) 956 { 957 int ret; 958 959 if (compat_need_64bit_alignment_fixup()) { 960 ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size, 961 rule_buf); 962 useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs); 963 } else { 964 ret = copy_to_user(useraddr, rxnfc, size); 965 useraddr += offsetof(struct ethtool_rxnfc, rule_locs); 966 } 967 968 if (ret) 969 return -EFAULT; 970 971 if (rule_buf) { 972 if (copy_to_user(useraddr, rule_buf, 973 rxnfc->rule_cnt * sizeof(u32))) 974 return -EFAULT; 975 } 976 977 return 0; 978 } 979 980 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, 981 u32 cmd, void __user *useraddr) 982 { 983 const struct ethtool_ops *ops = dev->ethtool_ops; 984 struct ethtool_rxnfc info; 985 size_t info_size = sizeof(info); 986 int rc; 987 988 if (!ops->set_rxnfc) 989 return -EOPNOTSUPP; 990 991 rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 992 if (rc) 993 return rc; 994 995 if (cmd == ETHTOOL_SRXCLSRLINS && info.fs.flow_type & FLOW_RSS) { 996 /* Nonzero ring with RSS only makes sense 997 * if NIC adds them together 998 */ 999 if (!ops->cap_rss_rxnfc_adds && 1000 ethtool_get_flow_spec_ring(info.fs.ring_cookie)) 1001 return -EINVAL; 1002 1003 if (!xa_load(&dev->ethtool->rss_ctx, info.rss_context)) 1004 return -EINVAL; 1005 } 1006 1007 if (cmd == ETHTOOL_SRXFH && ops->get_rxfh) { 1008 struct ethtool_rxfh_param rxfh = {}; 1009 1010 rc = ops->get_rxfh(dev, &rxfh); 1011 if (rc) 1012 return rc; 1013 1014 /* Sanity check: if symmetric-xor/symmetric-or-xor is set, then: 1015 * 1 - no other fields besides IP src/dst and/or L4 src/dst 1016 * 2 - If src is set, dst must also be set 1017 */ 1018 if ((rxfh.input_xfrm & (RXH_XFRM_SYM_XOR | RXH_XFRM_SYM_OR_XOR)) && 1019 ((info.data & ~(RXH_IP_SRC | RXH_IP_DST | 1020 RXH_L4_B_0_1 | RXH_L4_B_2_3)) || 1021 (!!(info.data & RXH_IP_SRC) ^ !!(info.data & RXH_IP_DST)) || 1022 (!!(info.data & RXH_L4_B_0_1) ^ !!(info.data & RXH_L4_B_2_3)))) 1023 return -EINVAL; 1024 } 1025 1026 rc = ops->set_rxnfc(dev, &info); 1027 if (rc) 1028 return rc; 1029 1030 if (cmd == ETHTOOL_SRXCLSRLINS && 1031 ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL)) 1032 return -EFAULT; 1033 1034 return 0; 1035 } 1036 1037 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, 1038 u32 cmd, void __user *useraddr) 1039 { 1040 struct ethtool_rxnfc info; 1041 size_t info_size = sizeof(info); 1042 const struct ethtool_ops *ops = dev->ethtool_ops; 1043 int ret; 1044 void *rule_buf = NULL; 1045 1046 if (!ops->get_rxnfc) 1047 return -EOPNOTSUPP; 1048 1049 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1050 if (ret) 1051 return ret; 1052 1053 if (info.cmd == ETHTOOL_GRXCLSRLALL) { 1054 if (info.rule_cnt > 0) { 1055 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) 1056 rule_buf = kcalloc(info.rule_cnt, sizeof(u32), 1057 GFP_USER); 1058 if (!rule_buf) 1059 return -ENOMEM; 1060 } 1061 } 1062 1063 ret = ops->get_rxnfc(dev, &info, rule_buf); 1064 if (ret < 0) 1065 goto err_out; 1066 1067 ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf); 1068 err_out: 1069 kfree(rule_buf); 1070 1071 return ret; 1072 } 1073 1074 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, 1075 struct ethtool_rxnfc *rx_rings, 1076 u32 size) 1077 { 1078 int i; 1079 1080 if (copy_from_user(indir, useraddr, array_size(size, sizeof(indir[0])))) 1081 return -EFAULT; 1082 1083 /* Validate ring indices */ 1084 for (i = 0; i < size; i++) 1085 if (indir[i] >= rx_rings->data) 1086 return -EINVAL; 1087 1088 return 0; 1089 } 1090 1091 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; 1092 1093 void netdev_rss_key_fill(void *buffer, size_t len) 1094 { 1095 BUG_ON(len > sizeof(netdev_rss_key)); 1096 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); 1097 memcpy(buffer, netdev_rss_key, len); 1098 } 1099 EXPORT_SYMBOL(netdev_rss_key_fill); 1100 1101 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, 1102 void __user *useraddr) 1103 { 1104 struct ethtool_rxfh_param rxfh = {}; 1105 u32 user_size; 1106 int ret; 1107 1108 if (!dev->ethtool_ops->get_rxfh_indir_size || 1109 !dev->ethtool_ops->get_rxfh) 1110 return -EOPNOTSUPP; 1111 rxfh.indir_size = dev->ethtool_ops->get_rxfh_indir_size(dev); 1112 if (rxfh.indir_size == 0) 1113 return -EOPNOTSUPP; 1114 1115 if (copy_from_user(&user_size, 1116 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1117 sizeof(user_size))) 1118 return -EFAULT; 1119 1120 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), 1121 &rxfh.indir_size, sizeof(rxfh.indir_size))) 1122 return -EFAULT; 1123 1124 /* If the user buffer size is 0, this is just a query for the 1125 * device table size. Otherwise, if it's smaller than the 1126 * device table size it's an error. 1127 */ 1128 if (user_size < rxfh.indir_size) 1129 return user_size == 0 ? 0 : -EINVAL; 1130 1131 rxfh.indir = kcalloc(rxfh.indir_size, sizeof(rxfh.indir[0]), GFP_USER); 1132 if (!rxfh.indir) 1133 return -ENOMEM; 1134 1135 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh); 1136 if (ret) 1137 goto out; 1138 if (copy_to_user(useraddr + 1139 offsetof(struct ethtool_rxfh_indir, ring_index[0]), 1140 rxfh.indir, rxfh.indir_size * sizeof(*rxfh.indir))) 1141 ret = -EFAULT; 1142 1143 out: 1144 kfree(rxfh.indir); 1145 return ret; 1146 } 1147 1148 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, 1149 void __user *useraddr) 1150 { 1151 const struct ethtool_ops *ops = dev->ethtool_ops; 1152 struct ethtool_rxfh_param rxfh_dev = {}; 1153 struct netlink_ext_ack *extack = NULL; 1154 struct ethtool_rxnfc rx_rings; 1155 u32 user_size, i; 1156 int ret; 1157 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); 1158 1159 if (!ops->get_rxfh_indir_size || !ops->set_rxfh || 1160 !ops->get_rxnfc) 1161 return -EOPNOTSUPP; 1162 1163 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1164 if (rxfh_dev.indir_size == 0) 1165 return -EOPNOTSUPP; 1166 1167 if (copy_from_user(&user_size, 1168 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1169 sizeof(user_size))) 1170 return -EFAULT; 1171 1172 if (user_size != 0 && user_size != rxfh_dev.indir_size) 1173 return -EINVAL; 1174 1175 rxfh_dev.indir = kcalloc(rxfh_dev.indir_size, 1176 sizeof(rxfh_dev.indir[0]), GFP_USER); 1177 if (!rxfh_dev.indir) 1178 return -ENOMEM; 1179 1180 rx_rings.cmd = ETHTOOL_GRXRINGS; 1181 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1182 if (ret) 1183 goto out; 1184 1185 if (user_size == 0) { 1186 u32 *indir = rxfh_dev.indir; 1187 1188 for (i = 0; i < rxfh_dev.indir_size; i++) 1189 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1190 } else { 1191 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1192 useraddr + ringidx_offset, 1193 &rx_rings, 1194 rxfh_dev.indir_size); 1195 if (ret) 1196 goto out; 1197 } 1198 1199 rxfh_dev.hfunc = ETH_RSS_HASH_NO_CHANGE; 1200 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1201 if (ret) 1202 goto out; 1203 1204 /* indicate whether rxfh was set to default */ 1205 if (user_size == 0) 1206 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1207 else 1208 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1209 1210 out: 1211 kfree(rxfh_dev.indir); 1212 return ret; 1213 } 1214 1215 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, 1216 void __user *useraddr) 1217 { 1218 const struct ethtool_ops *ops = dev->ethtool_ops; 1219 struct ethtool_rxfh_param rxfh_dev = {}; 1220 u32 user_indir_size, user_key_size; 1221 struct ethtool_rxfh_context *ctx; 1222 struct ethtool_rxfh rxfh; 1223 u32 indir_bytes; 1224 u8 *rss_config; 1225 u32 total_size; 1226 int ret; 1227 1228 if (!ops->get_rxfh) 1229 return -EOPNOTSUPP; 1230 1231 if (ops->get_rxfh_indir_size) 1232 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1233 if (ops->get_rxfh_key_size) 1234 rxfh_dev.key_size = ops->get_rxfh_key_size(dev); 1235 1236 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1237 return -EFAULT; 1238 user_indir_size = rxfh.indir_size; 1239 user_key_size = rxfh.key_size; 1240 1241 /* Check that reserved fields are 0 for now */ 1242 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1243 return -EINVAL; 1244 /* Most drivers don't handle rss_context, check it's 0 as well */ 1245 if (rxfh.rss_context && !(ops->cap_rss_ctx_supported || 1246 ops->create_rxfh_context)) 1247 return -EOPNOTSUPP; 1248 1249 rxfh.indir_size = rxfh_dev.indir_size; 1250 rxfh.key_size = rxfh_dev.key_size; 1251 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) 1252 return -EFAULT; 1253 1254 if ((user_indir_size && user_indir_size != rxfh_dev.indir_size) || 1255 (user_key_size && user_key_size != rxfh_dev.key_size)) 1256 return -EINVAL; 1257 1258 indir_bytes = user_indir_size * sizeof(rxfh_dev.indir[0]); 1259 total_size = indir_bytes + user_key_size; 1260 rss_config = kzalloc(total_size, GFP_USER); 1261 if (!rss_config) 1262 return -ENOMEM; 1263 1264 if (user_indir_size) 1265 rxfh_dev.indir = (u32 *)rss_config; 1266 1267 if (user_key_size) 1268 rxfh_dev.key = rss_config + indir_bytes; 1269 1270 if (rxfh.rss_context) { 1271 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1272 if (!ctx) { 1273 ret = -ENOENT; 1274 goto out; 1275 } 1276 if (rxfh_dev.indir) 1277 memcpy(rxfh_dev.indir, ethtool_rxfh_context_indir(ctx), 1278 indir_bytes); 1279 if (!ops->rxfh_per_ctx_key) { 1280 rxfh_dev.key_size = 0; 1281 } else { 1282 if (rxfh_dev.key) 1283 memcpy(rxfh_dev.key, 1284 ethtool_rxfh_context_key(ctx), 1285 user_key_size); 1286 rxfh_dev.hfunc = ctx->hfunc; 1287 } 1288 rxfh_dev.input_xfrm = ctx->input_xfrm; 1289 ret = 0; 1290 } else { 1291 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh_dev); 1292 if (ret) 1293 goto out; 1294 } 1295 1296 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), 1297 &rxfh_dev.hfunc, sizeof(rxfh.hfunc))) { 1298 ret = -EFAULT; 1299 } else if (copy_to_user(useraddr + 1300 offsetof(struct ethtool_rxfh, input_xfrm), 1301 &rxfh_dev.input_xfrm, 1302 sizeof(rxfh.input_xfrm))) { 1303 ret = -EFAULT; 1304 } else if (copy_to_user(useraddr + 1305 offsetof(struct ethtool_rxfh, key_size), 1306 &rxfh_dev.key_size, 1307 sizeof(rxfh.key_size))) { 1308 ret = -EFAULT; 1309 } else if (copy_to_user(useraddr + 1310 offsetof(struct ethtool_rxfh, rss_config[0]), 1311 rss_config, total_size)) { 1312 ret = -EFAULT; 1313 } 1314 out: 1315 kfree(rss_config); 1316 1317 return ret; 1318 } 1319 1320 static struct ethtool_rxfh_context * 1321 ethtool_rxfh_ctx_alloc(const struct ethtool_ops *ops, 1322 u32 indir_size, u32 key_size) 1323 { 1324 size_t indir_bytes, flex_len, key_off, size; 1325 struct ethtool_rxfh_context *ctx; 1326 u32 priv_bytes, indir_max; 1327 u16 key_max; 1328 1329 key_max = max(key_size, ops->rxfh_key_space); 1330 indir_max = max(indir_size, ops->rxfh_indir_space); 1331 1332 priv_bytes = ALIGN(ops->rxfh_priv_size, sizeof(u32)); 1333 indir_bytes = array_size(indir_max, sizeof(u32)); 1334 1335 key_off = size_add(priv_bytes, indir_bytes); 1336 flex_len = size_add(key_off, key_max); 1337 size = struct_size_t(struct ethtool_rxfh_context, data, flex_len); 1338 1339 ctx = kzalloc(size, GFP_KERNEL_ACCOUNT); 1340 if (!ctx) 1341 return NULL; 1342 1343 ctx->indir_size = indir_size; 1344 ctx->key_size = key_size; 1345 ctx->key_off = key_off; 1346 ctx->priv_size = ops->rxfh_priv_size; 1347 1348 ctx->hfunc = ETH_RSS_HASH_NO_CHANGE; 1349 ctx->input_xfrm = RXH_XFRM_NO_CHANGE; 1350 1351 return ctx; 1352 } 1353 1354 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, 1355 void __user *useraddr) 1356 { 1357 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); 1358 const struct ethtool_ops *ops = dev->ethtool_ops; 1359 u32 dev_indir_size = 0, dev_key_size = 0, i; 1360 u32 user_indir_len = 0, indir_bytes = 0; 1361 struct ethtool_rxfh_param rxfh_dev = {}; 1362 struct ethtool_rxfh_context *ctx = NULL; 1363 struct netlink_ext_ack *extack = NULL; 1364 struct ethtool_rxnfc rx_rings; 1365 struct ethtool_rxfh rxfh; 1366 bool locked = false; /* dev->ethtool->rss_lock taken */ 1367 bool create = false; 1368 u8 *rss_config; 1369 int ret; 1370 1371 if (!ops->get_rxnfc || !ops->set_rxfh) 1372 return -EOPNOTSUPP; 1373 1374 if (ops->get_rxfh_indir_size) 1375 dev_indir_size = ops->get_rxfh_indir_size(dev); 1376 if (ops->get_rxfh_key_size) 1377 dev_key_size = ops->get_rxfh_key_size(dev); 1378 1379 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1380 return -EFAULT; 1381 1382 /* Check that reserved fields are 0 for now */ 1383 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1384 return -EINVAL; 1385 /* Most drivers don't handle rss_context, check it's 0 as well */ 1386 if (rxfh.rss_context && !(ops->cap_rss_ctx_supported || 1387 ops->create_rxfh_context)) 1388 return -EOPNOTSUPP; 1389 /* Check input data transformation capabilities */ 1390 if (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_SYM_XOR && 1391 rxfh.input_xfrm != RXH_XFRM_SYM_OR_XOR && 1392 rxfh.input_xfrm != RXH_XFRM_NO_CHANGE) 1393 return -EINVAL; 1394 if (rxfh.input_xfrm != RXH_XFRM_NO_CHANGE && 1395 rxfh.input_xfrm & ~ops->supported_input_xfrm) 1396 return -EOPNOTSUPP; 1397 create = rxfh.rss_context == ETH_RXFH_CONTEXT_ALLOC; 1398 1399 if ((rxfh.indir_size && 1400 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && 1401 rxfh.indir_size != dev_indir_size) || 1402 (rxfh.key_size && rxfh.key_size != dev_key_size)) 1403 return -EINVAL; 1404 1405 /* Must request at least one change: indir size, hash key, function 1406 * or input transformation. 1407 * There's no need for any of it in case of context creation. 1408 */ 1409 if (!create && 1410 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && 1411 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE && 1412 rxfh.input_xfrm == RXH_XFRM_NO_CHANGE)) 1413 return -EINVAL; 1414 1415 indir_bytes = dev_indir_size * sizeof(rxfh_dev.indir[0]); 1416 1417 /* Check settings which may be global rather than per RSS-context */ 1418 if (rxfh.rss_context && !ops->rxfh_per_ctx_key) 1419 if (rxfh.key_size || 1420 (rxfh.hfunc && rxfh.hfunc != ETH_RSS_HASH_NO_CHANGE) || 1421 (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_NO_CHANGE)) 1422 return -EOPNOTSUPP; 1423 1424 rss_config = kzalloc(indir_bytes + dev_key_size, GFP_USER); 1425 if (!rss_config) 1426 return -ENOMEM; 1427 1428 rx_rings.cmd = ETHTOOL_GRXRINGS; 1429 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1430 if (ret) 1431 goto out; 1432 1433 /* rxfh.indir_size == 0 means reset the indir table to default (master 1434 * context) or delete the context (other RSS contexts). 1435 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. 1436 */ 1437 if (rxfh.indir_size && 1438 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { 1439 user_indir_len = indir_bytes; 1440 rxfh_dev.indir = (u32 *)rss_config; 1441 rxfh_dev.indir_size = dev_indir_size; 1442 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1443 useraddr + rss_cfg_offset, 1444 &rx_rings, 1445 rxfh.indir_size); 1446 if (ret) 1447 goto out; 1448 } else if (rxfh.indir_size == 0) { 1449 if (rxfh.rss_context == 0) { 1450 u32 *indir; 1451 1452 rxfh_dev.indir = (u32 *)rss_config; 1453 rxfh_dev.indir_size = dev_indir_size; 1454 indir = rxfh_dev.indir; 1455 for (i = 0; i < dev_indir_size; i++) 1456 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1457 } else { 1458 rxfh_dev.rss_delete = true; 1459 } 1460 } 1461 1462 if (rxfh.key_size) { 1463 rxfh_dev.key_size = dev_key_size; 1464 rxfh_dev.key = rss_config + indir_bytes; 1465 if (copy_from_user(rxfh_dev.key, 1466 useraddr + rss_cfg_offset + user_indir_len, 1467 rxfh.key_size)) { 1468 ret = -EFAULT; 1469 goto out; 1470 } 1471 } 1472 1473 if (rxfh.rss_context) { 1474 mutex_lock(&dev->ethtool->rss_lock); 1475 locked = true; 1476 } 1477 1478 if (rxfh.rss_context && rxfh_dev.rss_delete) { 1479 ret = ethtool_check_rss_ctx_busy(dev, rxfh.rss_context); 1480 if (ret) 1481 goto out; 1482 } 1483 1484 if (create) { 1485 if (rxfh_dev.rss_delete) { 1486 ret = -EINVAL; 1487 goto out; 1488 } 1489 ctx = ethtool_rxfh_ctx_alloc(ops, dev_indir_size, dev_key_size); 1490 if (!ctx) { 1491 ret = -ENOMEM; 1492 goto out; 1493 } 1494 1495 if (ops->create_rxfh_context) { 1496 u32 limit = ops->rxfh_max_num_contexts ?: U32_MAX; 1497 u32 ctx_id; 1498 1499 /* driver uses new API, core allocates ID */ 1500 ret = xa_alloc(&dev->ethtool->rss_ctx, &ctx_id, ctx, 1501 XA_LIMIT(1, limit - 1), 1502 GFP_KERNEL_ACCOUNT); 1503 if (ret < 0) { 1504 kfree(ctx); 1505 goto out; 1506 } 1507 WARN_ON(!ctx_id); /* can't happen */ 1508 rxfh.rss_context = ctx_id; 1509 } 1510 } else if (rxfh.rss_context) { 1511 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1512 if (!ctx) { 1513 ret = -ENOENT; 1514 goto out; 1515 } 1516 } 1517 rxfh_dev.hfunc = rxfh.hfunc; 1518 rxfh_dev.rss_context = rxfh.rss_context; 1519 rxfh_dev.input_xfrm = rxfh.input_xfrm; 1520 1521 if (rxfh.rss_context && ops->create_rxfh_context) { 1522 if (create) { 1523 ret = ops->create_rxfh_context(dev, ctx, &rxfh_dev, 1524 extack); 1525 /* Make sure driver populates defaults */ 1526 WARN_ON_ONCE(!ret && !rxfh_dev.key && 1527 ops->rxfh_per_ctx_key && 1528 !memchr_inv(ethtool_rxfh_context_key(ctx), 1529 0, ctx->key_size)); 1530 } else if (rxfh_dev.rss_delete) { 1531 ret = ops->remove_rxfh_context(dev, ctx, 1532 rxfh.rss_context, 1533 extack); 1534 } else { 1535 ret = ops->modify_rxfh_context(dev, ctx, &rxfh_dev, 1536 extack); 1537 } 1538 } else { 1539 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1540 } 1541 if (ret) { 1542 if (create) { 1543 /* failed to create, free our new tracking entry */ 1544 if (ops->create_rxfh_context) 1545 xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context); 1546 kfree(ctx); 1547 } 1548 goto out; 1549 } 1550 1551 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), 1552 &rxfh_dev.rss_context, sizeof(rxfh_dev.rss_context))) 1553 ret = -EFAULT; 1554 1555 if (!rxfh_dev.rss_context) { 1556 /* indicate whether rxfh was set to default */ 1557 if (rxfh.indir_size == 0) 1558 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1559 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1560 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1561 } 1562 /* Update rss_ctx tracking */ 1563 if (create && !ops->create_rxfh_context) { 1564 /* driver uses old API, it chose context ID */ 1565 if (WARN_ON(xa_load(&dev->ethtool->rss_ctx, rxfh_dev.rss_context))) { 1566 /* context ID reused, our tracking is screwed */ 1567 kfree(ctx); 1568 goto out; 1569 } 1570 /* Allocate the exact ID the driver gave us */ 1571 if (xa_is_err(xa_store(&dev->ethtool->rss_ctx, rxfh_dev.rss_context, 1572 ctx, GFP_KERNEL))) { 1573 kfree(ctx); 1574 goto out; 1575 } 1576 1577 /* Fetch the defaults for the old API, in the new API drivers 1578 * should write defaults into ctx themselves. 1579 */ 1580 rxfh_dev.indir = (u32 *)rss_config; 1581 rxfh_dev.indir_size = dev_indir_size; 1582 1583 rxfh_dev.key = rss_config + indir_bytes; 1584 rxfh_dev.key_size = dev_key_size; 1585 1586 ret = ops->get_rxfh(dev, &rxfh_dev); 1587 if (WARN_ON(ret)) { 1588 xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context); 1589 kfree(ctx); 1590 goto out; 1591 } 1592 } 1593 if (rxfh_dev.rss_delete) { 1594 WARN_ON(xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context) != ctx); 1595 kfree(ctx); 1596 } else if (ctx) { 1597 if (rxfh_dev.indir) { 1598 for (i = 0; i < dev_indir_size; i++) 1599 ethtool_rxfh_context_indir(ctx)[i] = rxfh_dev.indir[i]; 1600 ctx->indir_configured = 1601 rxfh.indir_size && 1602 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE; 1603 } 1604 if (rxfh_dev.key) { 1605 memcpy(ethtool_rxfh_context_key(ctx), rxfh_dev.key, 1606 dev_key_size); 1607 ctx->key_configured = !!rxfh.key_size; 1608 } 1609 if (rxfh_dev.hfunc != ETH_RSS_HASH_NO_CHANGE) 1610 ctx->hfunc = rxfh_dev.hfunc; 1611 if (rxfh_dev.input_xfrm != RXH_XFRM_NO_CHANGE) 1612 ctx->input_xfrm = rxfh_dev.input_xfrm; 1613 } 1614 1615 out: 1616 if (locked) 1617 mutex_unlock(&dev->ethtool->rss_lock); 1618 kfree(rss_config); 1619 return ret; 1620 } 1621 1622 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) 1623 { 1624 struct ethtool_regs regs; 1625 const struct ethtool_ops *ops = dev->ethtool_ops; 1626 void *regbuf; 1627 int reglen, ret; 1628 1629 if (!ops->get_regs || !ops->get_regs_len) 1630 return -EOPNOTSUPP; 1631 1632 if (copy_from_user(®s, useraddr, sizeof(regs))) 1633 return -EFAULT; 1634 1635 reglen = ops->get_regs_len(dev); 1636 if (reglen <= 0) 1637 return reglen; 1638 1639 if (regs.len > reglen) 1640 regs.len = reglen; 1641 1642 regbuf = vzalloc(reglen); 1643 if (!regbuf) 1644 return -ENOMEM; 1645 1646 if (regs.len < reglen) 1647 reglen = regs.len; 1648 1649 ops->get_regs(dev, ®s, regbuf); 1650 1651 ret = -EFAULT; 1652 if (copy_to_user(useraddr, ®s, sizeof(regs))) 1653 goto out; 1654 useraddr += offsetof(struct ethtool_regs, data); 1655 if (copy_to_user(useraddr, regbuf, reglen)) 1656 goto out; 1657 ret = 0; 1658 1659 out: 1660 vfree(regbuf); 1661 return ret; 1662 } 1663 1664 static int ethtool_reset(struct net_device *dev, char __user *useraddr) 1665 { 1666 struct ethtool_value reset; 1667 int ret; 1668 1669 if (!dev->ethtool_ops->reset) 1670 return -EOPNOTSUPP; 1671 1672 if (dev->ethtool->module_fw_flash_in_progress) 1673 return -EBUSY; 1674 1675 if (copy_from_user(&reset, useraddr, sizeof(reset))) 1676 return -EFAULT; 1677 1678 ret = dev->ethtool_ops->reset(dev, &reset.data); 1679 if (ret) 1680 return ret; 1681 1682 if (copy_to_user(useraddr, &reset, sizeof(reset))) 1683 return -EFAULT; 1684 return 0; 1685 } 1686 1687 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) 1688 { 1689 struct ethtool_wolinfo wol; 1690 1691 if (!dev->ethtool_ops->get_wol) 1692 return -EOPNOTSUPP; 1693 1694 memset(&wol, 0, sizeof(struct ethtool_wolinfo)); 1695 wol.cmd = ETHTOOL_GWOL; 1696 dev->ethtool_ops->get_wol(dev, &wol); 1697 1698 if (copy_to_user(useraddr, &wol, sizeof(wol))) 1699 return -EFAULT; 1700 return 0; 1701 } 1702 1703 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) 1704 { 1705 struct ethtool_wolinfo wol, cur_wol; 1706 int ret; 1707 1708 if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol) 1709 return -EOPNOTSUPP; 1710 1711 memset(&cur_wol, 0, sizeof(struct ethtool_wolinfo)); 1712 cur_wol.cmd = ETHTOOL_GWOL; 1713 dev->ethtool_ops->get_wol(dev, &cur_wol); 1714 1715 if (copy_from_user(&wol, useraddr, sizeof(wol))) 1716 return -EFAULT; 1717 1718 if (wol.wolopts & ~cur_wol.supported) 1719 return -EINVAL; 1720 1721 if (wol.wolopts == cur_wol.wolopts && 1722 !memcmp(wol.sopass, cur_wol.sopass, sizeof(wol.sopass))) 1723 return 0; 1724 1725 ret = dev->ethtool_ops->set_wol(dev, &wol); 1726 if (ret) 1727 return ret; 1728 1729 dev->ethtool->wol_enabled = !!wol.wolopts; 1730 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL); 1731 1732 return 0; 1733 } 1734 1735 static void eee_to_keee(struct ethtool_keee *keee, 1736 const struct ethtool_eee *eee) 1737 { 1738 memset(keee, 0, sizeof(*keee)); 1739 1740 keee->eee_enabled = eee->eee_enabled; 1741 keee->tx_lpi_enabled = eee->tx_lpi_enabled; 1742 keee->tx_lpi_timer = eee->tx_lpi_timer; 1743 1744 ethtool_convert_legacy_u32_to_link_mode(keee->advertised, 1745 eee->advertised); 1746 } 1747 1748 static void keee_to_eee(struct ethtool_eee *eee, 1749 const struct ethtool_keee *keee) 1750 { 1751 bool overflow; 1752 1753 memset(eee, 0, sizeof(*eee)); 1754 1755 eee->eee_active = keee->eee_active; 1756 eee->eee_enabled = keee->eee_enabled; 1757 eee->tx_lpi_enabled = keee->tx_lpi_enabled; 1758 eee->tx_lpi_timer = keee->tx_lpi_timer; 1759 1760 overflow = !ethtool_convert_link_mode_to_legacy_u32(&eee->supported, 1761 keee->supported); 1762 ethtool_convert_link_mode_to_legacy_u32(&eee->advertised, 1763 keee->advertised); 1764 ethtool_convert_link_mode_to_legacy_u32(&eee->lp_advertised, 1765 keee->lp_advertised); 1766 if (overflow) 1767 pr_warn("Ethtool ioctl interface doesn't support passing EEE linkmodes beyond bit 32\n"); 1768 } 1769 1770 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) 1771 { 1772 struct ethtool_keee keee; 1773 struct ethtool_eee eee; 1774 int rc; 1775 1776 if (!dev->ethtool_ops->get_eee) 1777 return -EOPNOTSUPP; 1778 1779 memset(&keee, 0, sizeof(keee)); 1780 rc = dev->ethtool_ops->get_eee(dev, &keee); 1781 if (rc) 1782 return rc; 1783 1784 keee_to_eee(&eee, &keee); 1785 if (copy_to_user(useraddr, &eee, sizeof(eee))) 1786 return -EFAULT; 1787 1788 return 0; 1789 } 1790 1791 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) 1792 { 1793 struct ethtool_keee keee; 1794 struct ethtool_eee eee; 1795 int ret; 1796 1797 if (!dev->ethtool_ops->set_eee) 1798 return -EOPNOTSUPP; 1799 1800 if (copy_from_user(&eee, useraddr, sizeof(eee))) 1801 return -EFAULT; 1802 1803 eee_to_keee(&keee, &eee); 1804 ret = dev->ethtool_ops->set_eee(dev, &keee); 1805 if (!ret) 1806 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL); 1807 return ret; 1808 } 1809 1810 static int ethtool_nway_reset(struct net_device *dev) 1811 { 1812 if (!dev->ethtool_ops->nway_reset) 1813 return -EOPNOTSUPP; 1814 1815 return dev->ethtool_ops->nway_reset(dev); 1816 } 1817 1818 static int ethtool_get_link(struct net_device *dev, char __user *useraddr) 1819 { 1820 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; 1821 int link = __ethtool_get_link(dev); 1822 1823 if (link < 0) 1824 return link; 1825 1826 edata.data = link; 1827 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1828 return -EFAULT; 1829 return 0; 1830 } 1831 1832 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, 1833 int (*getter)(struct net_device *, 1834 struct ethtool_eeprom *, u8 *), 1835 u32 total_len) 1836 { 1837 struct ethtool_eeprom eeprom; 1838 void __user *userbuf = useraddr + sizeof(eeprom); 1839 u32 bytes_remaining; 1840 u8 *data; 1841 int ret = 0; 1842 1843 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1844 return -EFAULT; 1845 1846 /* Check for wrap and zero */ 1847 if (eeprom.offset + eeprom.len <= eeprom.offset) 1848 return -EINVAL; 1849 1850 /* Check for exceeding total eeprom len */ 1851 if (eeprom.offset + eeprom.len > total_len) 1852 return -EINVAL; 1853 1854 data = kzalloc(PAGE_SIZE, GFP_USER); 1855 if (!data) 1856 return -ENOMEM; 1857 1858 bytes_remaining = eeprom.len; 1859 while (bytes_remaining > 0) { 1860 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1861 1862 ret = getter(dev, &eeprom, data); 1863 if (ret) 1864 break; 1865 if (!eeprom.len) { 1866 ret = -EIO; 1867 break; 1868 } 1869 if (copy_to_user(userbuf, data, eeprom.len)) { 1870 ret = -EFAULT; 1871 break; 1872 } 1873 userbuf += eeprom.len; 1874 eeprom.offset += eeprom.len; 1875 bytes_remaining -= eeprom.len; 1876 } 1877 1878 eeprom.len = userbuf - (useraddr + sizeof(eeprom)); 1879 eeprom.offset -= eeprom.len; 1880 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) 1881 ret = -EFAULT; 1882 1883 kfree(data); 1884 return ret; 1885 } 1886 1887 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) 1888 { 1889 const struct ethtool_ops *ops = dev->ethtool_ops; 1890 1891 if (!ops->get_eeprom || !ops->get_eeprom_len || 1892 !ops->get_eeprom_len(dev)) 1893 return -EOPNOTSUPP; 1894 1895 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, 1896 ops->get_eeprom_len(dev)); 1897 } 1898 1899 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) 1900 { 1901 struct ethtool_eeprom eeprom; 1902 const struct ethtool_ops *ops = dev->ethtool_ops; 1903 void __user *userbuf = useraddr + sizeof(eeprom); 1904 u32 bytes_remaining; 1905 u8 *data; 1906 int ret = 0; 1907 1908 if (!ops->set_eeprom || !ops->get_eeprom_len || 1909 !ops->get_eeprom_len(dev)) 1910 return -EOPNOTSUPP; 1911 1912 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1913 return -EFAULT; 1914 1915 /* Check for wrap and zero */ 1916 if (eeprom.offset + eeprom.len <= eeprom.offset) 1917 return -EINVAL; 1918 1919 /* Check for exceeding total eeprom len */ 1920 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) 1921 return -EINVAL; 1922 1923 data = kzalloc(PAGE_SIZE, GFP_USER); 1924 if (!data) 1925 return -ENOMEM; 1926 1927 bytes_remaining = eeprom.len; 1928 while (bytes_remaining > 0) { 1929 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1930 1931 if (copy_from_user(data, userbuf, eeprom.len)) { 1932 ret = -EFAULT; 1933 break; 1934 } 1935 ret = ops->set_eeprom(dev, &eeprom, data); 1936 if (ret) 1937 break; 1938 userbuf += eeprom.len; 1939 eeprom.offset += eeprom.len; 1940 bytes_remaining -= eeprom.len; 1941 } 1942 1943 kfree(data); 1944 return ret; 1945 } 1946 1947 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, 1948 void __user *useraddr) 1949 { 1950 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 1951 struct kernel_ethtool_coalesce kernel_coalesce = {}; 1952 int ret; 1953 1954 if (!dev->ethtool_ops->get_coalesce) 1955 return -EOPNOTSUPP; 1956 1957 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 1958 NULL); 1959 if (ret) 1960 return ret; 1961 1962 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 1963 return -EFAULT; 1964 return 0; 1965 } 1966 1967 static bool 1968 ethtool_set_coalesce_supported(struct net_device *dev, 1969 struct ethtool_coalesce *coalesce) 1970 { 1971 u32 supported_params = dev->ethtool_ops->supported_coalesce_params; 1972 u32 nonzero_params = 0; 1973 1974 if (coalesce->rx_coalesce_usecs) 1975 nonzero_params |= ETHTOOL_COALESCE_RX_USECS; 1976 if (coalesce->rx_max_coalesced_frames) 1977 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; 1978 if (coalesce->rx_coalesce_usecs_irq) 1979 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; 1980 if (coalesce->rx_max_coalesced_frames_irq) 1981 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; 1982 if (coalesce->tx_coalesce_usecs) 1983 nonzero_params |= ETHTOOL_COALESCE_TX_USECS; 1984 if (coalesce->tx_max_coalesced_frames) 1985 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; 1986 if (coalesce->tx_coalesce_usecs_irq) 1987 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; 1988 if (coalesce->tx_max_coalesced_frames_irq) 1989 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; 1990 if (coalesce->stats_block_coalesce_usecs) 1991 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; 1992 if (coalesce->use_adaptive_rx_coalesce) 1993 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; 1994 if (coalesce->use_adaptive_tx_coalesce) 1995 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; 1996 if (coalesce->pkt_rate_low) 1997 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; 1998 if (coalesce->rx_coalesce_usecs_low) 1999 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; 2000 if (coalesce->rx_max_coalesced_frames_low) 2001 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; 2002 if (coalesce->tx_coalesce_usecs_low) 2003 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; 2004 if (coalesce->tx_max_coalesced_frames_low) 2005 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; 2006 if (coalesce->pkt_rate_high) 2007 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; 2008 if (coalesce->rx_coalesce_usecs_high) 2009 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; 2010 if (coalesce->rx_max_coalesced_frames_high) 2011 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; 2012 if (coalesce->tx_coalesce_usecs_high) 2013 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; 2014 if (coalesce->tx_max_coalesced_frames_high) 2015 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; 2016 if (coalesce->rate_sample_interval) 2017 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; 2018 2019 return (supported_params & nonzero_params) == nonzero_params; 2020 } 2021 2022 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, 2023 void __user *useraddr) 2024 { 2025 struct kernel_ethtool_coalesce kernel_coalesce = {}; 2026 struct ethtool_coalesce coalesce; 2027 int ret; 2028 2029 if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce) 2030 return -EOPNOTSUPP; 2031 2032 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 2033 NULL); 2034 if (ret) 2035 return ret; 2036 2037 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) 2038 return -EFAULT; 2039 2040 if (!ethtool_set_coalesce_supported(dev, &coalesce)) 2041 return -EOPNOTSUPP; 2042 2043 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, 2044 NULL); 2045 if (!ret) 2046 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL); 2047 return ret; 2048 } 2049 2050 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) 2051 { 2052 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; 2053 struct kernel_ethtool_ringparam kernel_ringparam = {}; 2054 2055 if (!dev->ethtool_ops->get_ringparam) 2056 return -EOPNOTSUPP; 2057 2058 dev->ethtool_ops->get_ringparam(dev, &ringparam, 2059 &kernel_ringparam, NULL); 2060 2061 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) 2062 return -EFAULT; 2063 return 0; 2064 } 2065 2066 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) 2067 { 2068 struct kernel_ethtool_ringparam kernel_ringparam; 2069 struct ethtool_ringparam ringparam, max; 2070 int ret; 2071 2072 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) 2073 return -EOPNOTSUPP; 2074 2075 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) 2076 return -EFAULT; 2077 2078 ethtool_ringparam_get_cfg(dev, &max, &kernel_ringparam, NULL); 2079 2080 /* ensure new ring parameters are within the maximums */ 2081 if (ringparam.rx_pending > max.rx_max_pending || 2082 ringparam.rx_mini_pending > max.rx_mini_max_pending || 2083 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || 2084 ringparam.tx_pending > max.tx_max_pending) 2085 return -EINVAL; 2086 2087 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, 2088 &kernel_ringparam, NULL); 2089 if (!ret) 2090 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL); 2091 return ret; 2092 } 2093 2094 static noinline_for_stack int ethtool_get_channels(struct net_device *dev, 2095 void __user *useraddr) 2096 { 2097 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; 2098 2099 if (!dev->ethtool_ops->get_channels) 2100 return -EOPNOTSUPP; 2101 2102 dev->ethtool_ops->get_channels(dev, &channels); 2103 2104 if (copy_to_user(useraddr, &channels, sizeof(channels))) 2105 return -EFAULT; 2106 return 0; 2107 } 2108 2109 static noinline_for_stack int ethtool_set_channels(struct net_device *dev, 2110 void __user *useraddr) 2111 { 2112 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; 2113 u16 from_channel, to_channel; 2114 unsigned int i; 2115 int ret; 2116 2117 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) 2118 return -EOPNOTSUPP; 2119 2120 if (copy_from_user(&channels, useraddr, sizeof(channels))) 2121 return -EFAULT; 2122 2123 dev->ethtool_ops->get_channels(dev, &curr); 2124 2125 if (channels.rx_count == curr.rx_count && 2126 channels.tx_count == curr.tx_count && 2127 channels.combined_count == curr.combined_count && 2128 channels.other_count == curr.other_count) 2129 return 0; 2130 2131 /* ensure new counts are within the maximums */ 2132 if (channels.rx_count > curr.max_rx || 2133 channels.tx_count > curr.max_tx || 2134 channels.combined_count > curr.max_combined || 2135 channels.other_count > curr.max_other) 2136 return -EINVAL; 2137 2138 /* ensure there is at least one RX and one TX channel */ 2139 if (!channels.combined_count && 2140 (!channels.rx_count || !channels.tx_count)) 2141 return -EINVAL; 2142 2143 ret = ethtool_check_max_channel(dev, channels, NULL); 2144 if (ret) 2145 return ret; 2146 2147 /* Disabling channels, query zero-copy AF_XDP sockets */ 2148 from_channel = channels.combined_count + 2149 min(channels.rx_count, channels.tx_count); 2150 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); 2151 for (i = from_channel; i < to_channel; i++) 2152 if (xsk_get_pool_from_qid(dev, i)) 2153 return -EINVAL; 2154 2155 ret = dev->ethtool_ops->set_channels(dev, &channels); 2156 if (!ret) 2157 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL); 2158 return ret; 2159 } 2160 2161 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) 2162 { 2163 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; 2164 2165 if (!dev->ethtool_ops->get_pauseparam) 2166 return -EOPNOTSUPP; 2167 2168 dev->ethtool_ops->get_pauseparam(dev, &pauseparam); 2169 2170 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) 2171 return -EFAULT; 2172 return 0; 2173 } 2174 2175 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) 2176 { 2177 struct ethtool_pauseparam pauseparam; 2178 int ret; 2179 2180 if (!dev->ethtool_ops->set_pauseparam) 2181 return -EOPNOTSUPP; 2182 2183 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) 2184 return -EFAULT; 2185 2186 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); 2187 if (!ret) 2188 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL); 2189 return ret; 2190 } 2191 2192 static int ethtool_self_test(struct net_device *dev, char __user *useraddr) 2193 { 2194 struct ethtool_test test; 2195 const struct ethtool_ops *ops = dev->ethtool_ops; 2196 u64 *data; 2197 int ret, test_len; 2198 2199 if (!ops->self_test || !ops->get_sset_count) 2200 return -EOPNOTSUPP; 2201 2202 test_len = ops->get_sset_count(dev, ETH_SS_TEST); 2203 if (test_len < 0) 2204 return test_len; 2205 WARN_ON(test_len == 0); 2206 2207 if (copy_from_user(&test, useraddr, sizeof(test))) 2208 return -EFAULT; 2209 2210 test.len = test_len; 2211 data = kcalloc(test_len, sizeof(u64), GFP_USER); 2212 if (!data) 2213 return -ENOMEM; 2214 2215 netif_testing_on(dev); 2216 ops->self_test(dev, &test, data); 2217 netif_testing_off(dev); 2218 2219 ret = -EFAULT; 2220 if (copy_to_user(useraddr, &test, sizeof(test))) 2221 goto out; 2222 useraddr += sizeof(test); 2223 if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) 2224 goto out; 2225 ret = 0; 2226 2227 out: 2228 kfree(data); 2229 return ret; 2230 } 2231 2232 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) 2233 { 2234 struct ethtool_gstrings gstrings; 2235 u8 *data; 2236 int ret; 2237 2238 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) 2239 return -EFAULT; 2240 2241 ret = __ethtool_get_sset_count(dev, gstrings.string_set); 2242 if (ret < 0) 2243 return ret; 2244 if (ret > S32_MAX / ETH_GSTRING_LEN) 2245 return -ENOMEM; 2246 WARN_ON_ONCE(!ret); 2247 2248 gstrings.len = ret; 2249 2250 if (gstrings.len) { 2251 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); 2252 if (!data) 2253 return -ENOMEM; 2254 2255 __ethtool_get_strings(dev, gstrings.string_set, data); 2256 } else { 2257 data = NULL; 2258 } 2259 2260 ret = -EFAULT; 2261 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) 2262 goto out; 2263 useraddr += sizeof(gstrings); 2264 if (gstrings.len && 2265 copy_to_user(useraddr, data, 2266 array_size(gstrings.len, ETH_GSTRING_LEN))) 2267 goto out; 2268 ret = 0; 2269 2270 out: 2271 vfree(data); 2272 return ret; 2273 } 2274 2275 __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) 2276 { 2277 va_list args; 2278 2279 va_start(args, fmt); 2280 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); 2281 va_end(args); 2282 2283 *data += ETH_GSTRING_LEN; 2284 } 2285 EXPORT_SYMBOL(ethtool_sprintf); 2286 2287 void ethtool_puts(u8 **data, const char *str) 2288 { 2289 strscpy(*data, str, ETH_GSTRING_LEN); 2290 *data += ETH_GSTRING_LEN; 2291 } 2292 EXPORT_SYMBOL(ethtool_puts); 2293 2294 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) 2295 { 2296 struct ethtool_value id; 2297 static bool busy; 2298 const struct ethtool_ops *ops = dev->ethtool_ops; 2299 netdevice_tracker dev_tracker; 2300 int rc; 2301 2302 if (!ops->set_phys_id) 2303 return -EOPNOTSUPP; 2304 2305 if (busy) 2306 return -EBUSY; 2307 2308 if (copy_from_user(&id, useraddr, sizeof(id))) 2309 return -EFAULT; 2310 2311 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); 2312 if (rc < 0) 2313 return rc; 2314 2315 /* Drop the RTNL lock while waiting, but prevent reentry or 2316 * removal of the device. 2317 */ 2318 busy = true; 2319 netdev_hold(dev, &dev_tracker, GFP_KERNEL); 2320 rtnl_unlock(); 2321 2322 if (rc == 0) { 2323 /* Driver will handle this itself */ 2324 schedule_timeout_interruptible( 2325 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); 2326 } else { 2327 /* Driver expects to be called at twice the frequency in rc */ 2328 int n = rc * 2, interval = HZ / n; 2329 u64 count = mul_u32_u32(n, id.data); 2330 u64 i = 0; 2331 2332 do { 2333 rtnl_lock(); 2334 rc = ops->set_phys_id(dev, 2335 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); 2336 rtnl_unlock(); 2337 if (rc) 2338 break; 2339 schedule_timeout_interruptible(interval); 2340 } while (!signal_pending(current) && (!id.data || i < count)); 2341 } 2342 2343 rtnl_lock(); 2344 netdev_put(dev, &dev_tracker); 2345 busy = false; 2346 2347 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); 2348 return rc; 2349 } 2350 2351 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) 2352 { 2353 struct ethtool_stats stats; 2354 const struct ethtool_ops *ops = dev->ethtool_ops; 2355 u64 *data; 2356 int ret, n_stats; 2357 2358 if (!ops->get_ethtool_stats || !ops->get_sset_count) 2359 return -EOPNOTSUPP; 2360 2361 n_stats = ops->get_sset_count(dev, ETH_SS_STATS); 2362 if (n_stats < 0) 2363 return n_stats; 2364 if (n_stats > S32_MAX / sizeof(u64)) 2365 return -ENOMEM; 2366 WARN_ON_ONCE(!n_stats); 2367 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2368 return -EFAULT; 2369 2370 stats.n_stats = n_stats; 2371 2372 if (n_stats) { 2373 data = vzalloc(array_size(n_stats, sizeof(u64))); 2374 if (!data) 2375 return -ENOMEM; 2376 ops->get_ethtool_stats(dev, &stats, data); 2377 } else { 2378 data = NULL; 2379 } 2380 2381 ret = -EFAULT; 2382 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2383 goto out; 2384 useraddr += sizeof(stats); 2385 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) 2386 goto out; 2387 ret = 0; 2388 2389 out: 2390 vfree(data); 2391 return ret; 2392 } 2393 2394 static int ethtool_vzalloc_stats_array(int n_stats, u64 **data) 2395 { 2396 if (n_stats < 0) 2397 return n_stats; 2398 if (n_stats > S32_MAX / sizeof(u64)) 2399 return -ENOMEM; 2400 if (WARN_ON_ONCE(!n_stats)) 2401 return -EOPNOTSUPP; 2402 2403 *data = vzalloc(array_size(n_stats, sizeof(u64))); 2404 if (!*data) 2405 return -ENOMEM; 2406 2407 return 0; 2408 } 2409 2410 static int ethtool_get_phy_stats_phydev(struct phy_device *phydev, 2411 struct ethtool_stats *stats, 2412 u64 **data) 2413 { 2414 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 2415 int n_stats, ret; 2416 2417 if (!phy_ops || !phy_ops->get_sset_count || !phy_ops->get_stats) 2418 return -EOPNOTSUPP; 2419 2420 n_stats = phy_ops->get_sset_count(phydev); 2421 2422 ret = ethtool_vzalloc_stats_array(n_stats, data); 2423 if (ret) 2424 return ret; 2425 2426 stats->n_stats = n_stats; 2427 return phy_ops->get_stats(phydev, stats, *data); 2428 } 2429 2430 static int ethtool_get_phy_stats_ethtool(struct net_device *dev, 2431 struct ethtool_stats *stats, 2432 u64 **data) 2433 { 2434 const struct ethtool_ops *ops = dev->ethtool_ops; 2435 int n_stats, ret; 2436 2437 if (!ops || !ops->get_sset_count || !ops->get_ethtool_phy_stats) 2438 return -EOPNOTSUPP; 2439 2440 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); 2441 2442 ret = ethtool_vzalloc_stats_array(n_stats, data); 2443 if (ret) 2444 return ret; 2445 2446 stats->n_stats = n_stats; 2447 ops->get_ethtool_phy_stats(dev, stats, *data); 2448 2449 return 0; 2450 } 2451 2452 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) 2453 { 2454 struct phy_device *phydev = dev->phydev; 2455 struct ethtool_stats stats; 2456 u64 *data = NULL; 2457 int ret = -EOPNOTSUPP; 2458 2459 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2460 return -EFAULT; 2461 2462 if (phydev) 2463 ret = ethtool_get_phy_stats_phydev(phydev, &stats, &data); 2464 2465 if (ret == -EOPNOTSUPP) 2466 ret = ethtool_get_phy_stats_ethtool(dev, &stats, &data); 2467 2468 if (ret) 2469 goto out; 2470 2471 if (copy_to_user(useraddr, &stats, sizeof(stats))) { 2472 ret = -EFAULT; 2473 goto out; 2474 } 2475 2476 useraddr += sizeof(stats); 2477 if (copy_to_user(useraddr, data, array_size(stats.n_stats, sizeof(u64)))) 2478 ret = -EFAULT; 2479 2480 out: 2481 vfree(data); 2482 return ret; 2483 } 2484 2485 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) 2486 { 2487 struct ethtool_perm_addr epaddr; 2488 2489 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) 2490 return -EFAULT; 2491 2492 if (epaddr.size < dev->addr_len) 2493 return -ETOOSMALL; 2494 epaddr.size = dev->addr_len; 2495 2496 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) 2497 return -EFAULT; 2498 useraddr += sizeof(epaddr); 2499 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) 2500 return -EFAULT; 2501 return 0; 2502 } 2503 2504 static int ethtool_get_value(struct net_device *dev, char __user *useraddr, 2505 u32 cmd, u32 (*actor)(struct net_device *)) 2506 { 2507 struct ethtool_value edata = { .cmd = cmd }; 2508 2509 if (!actor) 2510 return -EOPNOTSUPP; 2511 2512 edata.data = actor(dev); 2513 2514 if (copy_to_user(useraddr, &edata, sizeof(edata))) 2515 return -EFAULT; 2516 return 0; 2517 } 2518 2519 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, 2520 void (*actor)(struct net_device *, u32)) 2521 { 2522 struct ethtool_value edata; 2523 2524 if (!actor) 2525 return -EOPNOTSUPP; 2526 2527 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2528 return -EFAULT; 2529 2530 actor(dev, edata.data); 2531 return 0; 2532 } 2533 2534 static int ethtool_set_value(struct net_device *dev, char __user *useraddr, 2535 int (*actor)(struct net_device *, u32)) 2536 { 2537 struct ethtool_value edata; 2538 2539 if (!actor) 2540 return -EOPNOTSUPP; 2541 2542 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2543 return -EFAULT; 2544 2545 return actor(dev, edata.data); 2546 } 2547 2548 static int 2549 ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) 2550 { 2551 if (!dev->ethtool_ops->flash_device) { 2552 req->devlink = netdev_to_devlink_get(dev); 2553 return 0; 2554 } 2555 2556 return dev->ethtool_ops->flash_device(dev, &req->efl); 2557 } 2558 2559 static int ethtool_set_dump(struct net_device *dev, 2560 void __user *useraddr) 2561 { 2562 struct ethtool_dump dump; 2563 2564 if (!dev->ethtool_ops->set_dump) 2565 return -EOPNOTSUPP; 2566 2567 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2568 return -EFAULT; 2569 2570 return dev->ethtool_ops->set_dump(dev, &dump); 2571 } 2572 2573 static int ethtool_get_dump_flag(struct net_device *dev, 2574 void __user *useraddr) 2575 { 2576 int ret; 2577 struct ethtool_dump dump; 2578 const struct ethtool_ops *ops = dev->ethtool_ops; 2579 2580 if (!ops->get_dump_flag) 2581 return -EOPNOTSUPP; 2582 2583 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2584 return -EFAULT; 2585 2586 ret = ops->get_dump_flag(dev, &dump); 2587 if (ret) 2588 return ret; 2589 2590 if (copy_to_user(useraddr, &dump, sizeof(dump))) 2591 return -EFAULT; 2592 return 0; 2593 } 2594 2595 static int ethtool_get_dump_data(struct net_device *dev, 2596 void __user *useraddr) 2597 { 2598 int ret; 2599 __u32 len; 2600 struct ethtool_dump dump, tmp; 2601 const struct ethtool_ops *ops = dev->ethtool_ops; 2602 void *data = NULL; 2603 2604 if (!ops->get_dump_data || !ops->get_dump_flag) 2605 return -EOPNOTSUPP; 2606 2607 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2608 return -EFAULT; 2609 2610 memset(&tmp, 0, sizeof(tmp)); 2611 tmp.cmd = ETHTOOL_GET_DUMP_FLAG; 2612 ret = ops->get_dump_flag(dev, &tmp); 2613 if (ret) 2614 return ret; 2615 2616 len = min(tmp.len, dump.len); 2617 if (!len) 2618 return -EFAULT; 2619 2620 /* Don't ever let the driver think there's more space available 2621 * than it requested with .get_dump_flag(). 2622 */ 2623 dump.len = len; 2624 2625 /* Always allocate enough space to hold the whole thing so that the 2626 * driver does not need to check the length and bother with partial 2627 * dumping. 2628 */ 2629 data = vzalloc(tmp.len); 2630 if (!data) 2631 return -ENOMEM; 2632 ret = ops->get_dump_data(dev, &dump, data); 2633 if (ret) 2634 goto out; 2635 2636 /* There are two sane possibilities: 2637 * 1. The driver's .get_dump_data() does not touch dump.len. 2638 * 2. Or it may set dump.len to how much it really writes, which 2639 * should be tmp.len (or len if it can do a partial dump). 2640 * In any case respond to userspace with the actual length of data 2641 * it's receiving. 2642 */ 2643 WARN_ON(dump.len != len && dump.len != tmp.len); 2644 dump.len = len; 2645 2646 if (copy_to_user(useraddr, &dump, sizeof(dump))) { 2647 ret = -EFAULT; 2648 goto out; 2649 } 2650 useraddr += offsetof(struct ethtool_dump, data); 2651 if (copy_to_user(useraddr, data, len)) 2652 ret = -EFAULT; 2653 out: 2654 vfree(data); 2655 return ret; 2656 } 2657 2658 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) 2659 { 2660 struct kernel_ethtool_ts_info kernel_info; 2661 struct ethtool_ts_info info = {}; 2662 int err; 2663 2664 err = __ethtool_get_ts_info(dev, &kernel_info); 2665 if (err) 2666 return err; 2667 2668 info.cmd = kernel_info.cmd; 2669 info.so_timestamping = kernel_info.so_timestamping; 2670 info.phc_index = kernel_info.phc_index; 2671 info.tx_types = kernel_info.tx_types; 2672 info.rx_filters = kernel_info.rx_filters; 2673 2674 if (copy_to_user(useraddr, &info, sizeof(info))) 2675 return -EFAULT; 2676 2677 return 0; 2678 } 2679 2680 int ethtool_get_module_info_call(struct net_device *dev, 2681 struct ethtool_modinfo *modinfo) 2682 { 2683 const struct ethtool_ops *ops = dev->ethtool_ops; 2684 struct phy_device *phydev = dev->phydev; 2685 2686 if (dev->ethtool->module_fw_flash_in_progress) 2687 return -EBUSY; 2688 2689 if (dev->sfp_bus) 2690 return sfp_get_module_info(dev->sfp_bus, modinfo); 2691 2692 if (phydev && phydev->drv && phydev->drv->module_info) 2693 return phydev->drv->module_info(phydev, modinfo); 2694 2695 if (ops->get_module_info) 2696 return ops->get_module_info(dev, modinfo); 2697 2698 return -EOPNOTSUPP; 2699 } 2700 2701 static int ethtool_get_module_info(struct net_device *dev, 2702 void __user *useraddr) 2703 { 2704 int ret; 2705 struct ethtool_modinfo modinfo; 2706 2707 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) 2708 return -EFAULT; 2709 2710 ret = ethtool_get_module_info_call(dev, &modinfo); 2711 if (ret) 2712 return ret; 2713 2714 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) 2715 return -EFAULT; 2716 2717 return 0; 2718 } 2719 2720 int ethtool_get_module_eeprom_call(struct net_device *dev, 2721 struct ethtool_eeprom *ee, u8 *data) 2722 { 2723 const struct ethtool_ops *ops = dev->ethtool_ops; 2724 struct phy_device *phydev = dev->phydev; 2725 2726 if (dev->ethtool->module_fw_flash_in_progress) 2727 return -EBUSY; 2728 2729 if (dev->sfp_bus) 2730 return sfp_get_module_eeprom(dev->sfp_bus, ee, data); 2731 2732 if (phydev && phydev->drv && phydev->drv->module_eeprom) 2733 return phydev->drv->module_eeprom(phydev, ee, data); 2734 2735 if (ops->get_module_eeprom) 2736 return ops->get_module_eeprom(dev, ee, data); 2737 2738 return -EOPNOTSUPP; 2739 } 2740 2741 static int ethtool_get_module_eeprom(struct net_device *dev, 2742 void __user *useraddr) 2743 { 2744 int ret; 2745 struct ethtool_modinfo modinfo; 2746 2747 ret = ethtool_get_module_info_call(dev, &modinfo); 2748 if (ret) 2749 return ret; 2750 2751 return ethtool_get_any_eeprom(dev, useraddr, 2752 ethtool_get_module_eeprom_call, 2753 modinfo.eeprom_len); 2754 } 2755 2756 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) 2757 { 2758 switch (tuna->id) { 2759 case ETHTOOL_RX_COPYBREAK: 2760 case ETHTOOL_TX_COPYBREAK: 2761 case ETHTOOL_TX_COPYBREAK_BUF_SIZE: 2762 if (tuna->len != sizeof(u32) || 2763 tuna->type_id != ETHTOOL_TUNABLE_U32) 2764 return -EINVAL; 2765 break; 2766 case ETHTOOL_PFC_PREVENTION_TOUT: 2767 if (tuna->len != sizeof(u16) || 2768 tuna->type_id != ETHTOOL_TUNABLE_U16) 2769 return -EINVAL; 2770 break; 2771 default: 2772 return -EINVAL; 2773 } 2774 2775 return 0; 2776 } 2777 2778 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) 2779 { 2780 int ret; 2781 struct ethtool_tunable tuna; 2782 const struct ethtool_ops *ops = dev->ethtool_ops; 2783 void *data; 2784 2785 if (!ops->get_tunable) 2786 return -EOPNOTSUPP; 2787 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2788 return -EFAULT; 2789 ret = ethtool_tunable_valid(&tuna); 2790 if (ret) 2791 return ret; 2792 data = kzalloc(tuna.len, GFP_USER); 2793 if (!data) 2794 return -ENOMEM; 2795 ret = ops->get_tunable(dev, &tuna, data); 2796 if (ret) 2797 goto out; 2798 useraddr += sizeof(tuna); 2799 ret = -EFAULT; 2800 if (copy_to_user(useraddr, data, tuna.len)) 2801 goto out; 2802 ret = 0; 2803 2804 out: 2805 kfree(data); 2806 return ret; 2807 } 2808 2809 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) 2810 { 2811 int ret; 2812 struct ethtool_tunable tuna; 2813 const struct ethtool_ops *ops = dev->ethtool_ops; 2814 void *data; 2815 2816 if (!ops->set_tunable) 2817 return -EOPNOTSUPP; 2818 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2819 return -EFAULT; 2820 ret = ethtool_tunable_valid(&tuna); 2821 if (ret) 2822 return ret; 2823 useraddr += sizeof(tuna); 2824 data = memdup_user(useraddr, tuna.len); 2825 if (IS_ERR(data)) 2826 return PTR_ERR(data); 2827 ret = ops->set_tunable(dev, &tuna, data); 2828 2829 kfree(data); 2830 return ret; 2831 } 2832 2833 static noinline_for_stack int 2834 ethtool_get_per_queue_coalesce(struct net_device *dev, 2835 void __user *useraddr, 2836 struct ethtool_per_queue_op *per_queue_opt) 2837 { 2838 u32 bit; 2839 int ret; 2840 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2841 2842 if (!dev->ethtool_ops->get_per_queue_coalesce) 2843 return -EOPNOTSUPP; 2844 2845 useraddr += sizeof(*per_queue_opt); 2846 2847 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, 2848 MAX_NUM_QUEUE); 2849 2850 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2851 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2852 2853 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); 2854 if (ret != 0) 2855 return ret; 2856 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2857 return -EFAULT; 2858 useraddr += sizeof(coalesce); 2859 } 2860 2861 return 0; 2862 } 2863 2864 static noinline_for_stack int 2865 ethtool_set_per_queue_coalesce(struct net_device *dev, 2866 void __user *useraddr, 2867 struct ethtool_per_queue_op *per_queue_opt) 2868 { 2869 u32 bit; 2870 int i, ret = 0; 2871 int n_queue; 2872 struct ethtool_coalesce *backup = NULL, *tmp = NULL; 2873 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2874 2875 if ((!dev->ethtool_ops->set_per_queue_coalesce) || 2876 (!dev->ethtool_ops->get_per_queue_coalesce)) 2877 return -EOPNOTSUPP; 2878 2879 useraddr += sizeof(*per_queue_opt); 2880 2881 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); 2882 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); 2883 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); 2884 if (!backup) 2885 return -ENOMEM; 2886 2887 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2888 struct ethtool_coalesce coalesce; 2889 2890 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); 2891 if (ret != 0) 2892 goto roll_back; 2893 2894 tmp++; 2895 2896 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { 2897 ret = -EFAULT; 2898 goto roll_back; 2899 } 2900 2901 if (!ethtool_set_coalesce_supported(dev, &coalesce)) { 2902 ret = -EOPNOTSUPP; 2903 goto roll_back; 2904 } 2905 2906 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); 2907 if (ret != 0) 2908 goto roll_back; 2909 2910 useraddr += sizeof(coalesce); 2911 } 2912 2913 roll_back: 2914 if (ret != 0) { 2915 tmp = backup; 2916 for_each_set_bit(i, queue_mask, bit) { 2917 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); 2918 tmp++; 2919 } 2920 } 2921 kfree(backup); 2922 2923 return ret; 2924 } 2925 2926 static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, 2927 void __user *useraddr, u32 sub_cmd) 2928 { 2929 struct ethtool_per_queue_op per_queue_opt; 2930 2931 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) 2932 return -EFAULT; 2933 2934 if (per_queue_opt.sub_command != sub_cmd) 2935 return -EINVAL; 2936 2937 switch (per_queue_opt.sub_command) { 2938 case ETHTOOL_GCOALESCE: 2939 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2940 case ETHTOOL_SCOALESCE: 2941 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2942 default: 2943 return -EOPNOTSUPP; 2944 } 2945 } 2946 2947 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) 2948 { 2949 switch (tuna->id) { 2950 case ETHTOOL_PHY_DOWNSHIFT: 2951 case ETHTOOL_PHY_FAST_LINK_DOWN: 2952 if (tuna->len != sizeof(u8) || 2953 tuna->type_id != ETHTOOL_TUNABLE_U8) 2954 return -EINVAL; 2955 break; 2956 case ETHTOOL_PHY_EDPD: 2957 if (tuna->len != sizeof(u16) || 2958 tuna->type_id != ETHTOOL_TUNABLE_U16) 2959 return -EINVAL; 2960 break; 2961 default: 2962 return -EINVAL; 2963 } 2964 2965 return 0; 2966 } 2967 2968 static int get_phy_tunable(struct net_device *dev, void __user *useraddr) 2969 { 2970 struct phy_device *phydev = dev->phydev; 2971 struct ethtool_tunable tuna; 2972 bool phy_drv_tunable; 2973 void *data; 2974 int ret; 2975 2976 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 2977 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) 2978 return -EOPNOTSUPP; 2979 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2980 return -EFAULT; 2981 ret = ethtool_phy_tunable_valid(&tuna); 2982 if (ret) 2983 return ret; 2984 data = kzalloc(tuna.len, GFP_USER); 2985 if (!data) 2986 return -ENOMEM; 2987 if (phy_drv_tunable) { 2988 mutex_lock(&phydev->lock); 2989 ret = phydev->drv->get_tunable(phydev, &tuna, data); 2990 mutex_unlock(&phydev->lock); 2991 } else { 2992 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); 2993 } 2994 if (ret) 2995 goto out; 2996 useraddr += sizeof(tuna); 2997 ret = -EFAULT; 2998 if (copy_to_user(useraddr, data, tuna.len)) 2999 goto out; 3000 ret = 0; 3001 3002 out: 3003 kfree(data); 3004 return ret; 3005 } 3006 3007 static int set_phy_tunable(struct net_device *dev, void __user *useraddr) 3008 { 3009 struct phy_device *phydev = dev->phydev; 3010 struct ethtool_tunable tuna; 3011 bool phy_drv_tunable; 3012 void *data; 3013 int ret; 3014 3015 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 3016 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) 3017 return -EOPNOTSUPP; 3018 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 3019 return -EFAULT; 3020 ret = ethtool_phy_tunable_valid(&tuna); 3021 if (ret) 3022 return ret; 3023 useraddr += sizeof(tuna); 3024 data = memdup_user(useraddr, tuna.len); 3025 if (IS_ERR(data)) 3026 return PTR_ERR(data); 3027 if (phy_drv_tunable) { 3028 mutex_lock(&phydev->lock); 3029 ret = phydev->drv->set_tunable(phydev, &tuna, data); 3030 mutex_unlock(&phydev->lock); 3031 } else { 3032 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); 3033 } 3034 3035 kfree(data); 3036 return ret; 3037 } 3038 3039 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) 3040 { 3041 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; 3042 int rc; 3043 3044 if (!dev->ethtool_ops->get_fecparam) 3045 return -EOPNOTSUPP; 3046 3047 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); 3048 if (rc) 3049 return rc; 3050 3051 if (WARN_ON_ONCE(fecparam.reserved)) 3052 fecparam.reserved = 0; 3053 3054 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) 3055 return -EFAULT; 3056 return 0; 3057 } 3058 3059 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) 3060 { 3061 struct ethtool_fecparam fecparam; 3062 3063 if (!dev->ethtool_ops->set_fecparam) 3064 return -EOPNOTSUPP; 3065 3066 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) 3067 return -EFAULT; 3068 3069 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) 3070 return -EINVAL; 3071 3072 fecparam.active_fec = 0; 3073 fecparam.reserved = 0; 3074 3075 return dev->ethtool_ops->set_fecparam(dev, &fecparam); 3076 } 3077 3078 /* The main entry point in this file. Called from net/core/dev_ioctl.c */ 3079 3080 static int 3081 __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, 3082 u32 ethcmd, struct ethtool_devlink_compat *devlink_state) 3083 { 3084 struct net_device *dev; 3085 u32 sub_cmd; 3086 int rc; 3087 netdev_features_t old_features; 3088 3089 dev = __dev_get_by_name(net, ifr->ifr_name); 3090 if (!dev) 3091 return -ENODEV; 3092 3093 if (ethcmd == ETHTOOL_PERQUEUE) { 3094 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) 3095 return -EFAULT; 3096 } else { 3097 sub_cmd = ethcmd; 3098 } 3099 /* Allow some commands to be done by anyone */ 3100 switch (sub_cmd) { 3101 case ETHTOOL_GSET: 3102 case ETHTOOL_GDRVINFO: 3103 case ETHTOOL_GMSGLVL: 3104 case ETHTOOL_GLINK: 3105 case ETHTOOL_GCOALESCE: 3106 case ETHTOOL_GRINGPARAM: 3107 case ETHTOOL_GPAUSEPARAM: 3108 case ETHTOOL_GRXCSUM: 3109 case ETHTOOL_GTXCSUM: 3110 case ETHTOOL_GSG: 3111 case ETHTOOL_GSSET_INFO: 3112 case ETHTOOL_GSTRINGS: 3113 case ETHTOOL_GSTATS: 3114 case ETHTOOL_GPHYSTATS: 3115 case ETHTOOL_GTSO: 3116 case ETHTOOL_GPERMADDR: 3117 case ETHTOOL_GUFO: 3118 case ETHTOOL_GGSO: 3119 case ETHTOOL_GGRO: 3120 case ETHTOOL_GFLAGS: 3121 case ETHTOOL_GPFLAGS: 3122 case ETHTOOL_GRXFH: 3123 case ETHTOOL_GRXRINGS: 3124 case ETHTOOL_GRXCLSRLCNT: 3125 case ETHTOOL_GRXCLSRULE: 3126 case ETHTOOL_GRXCLSRLALL: 3127 case ETHTOOL_GRXFHINDIR: 3128 case ETHTOOL_GRSSH: 3129 case ETHTOOL_GFEATURES: 3130 case ETHTOOL_GCHANNELS: 3131 case ETHTOOL_GET_TS_INFO: 3132 case ETHTOOL_GEEE: 3133 case ETHTOOL_GTUNABLE: 3134 case ETHTOOL_PHY_GTUNABLE: 3135 case ETHTOOL_GLINKSETTINGS: 3136 case ETHTOOL_GFECPARAM: 3137 break; 3138 default: 3139 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 3140 return -EPERM; 3141 } 3142 3143 if (dev->dev.parent) 3144 pm_runtime_get_sync(dev->dev.parent); 3145 3146 if (!netif_device_present(dev)) { 3147 rc = -ENODEV; 3148 goto out; 3149 } 3150 3151 if (dev->ethtool_ops->begin) { 3152 rc = dev->ethtool_ops->begin(dev); 3153 if (rc < 0) 3154 goto out; 3155 } 3156 old_features = dev->features; 3157 3158 switch (ethcmd) { 3159 case ETHTOOL_GSET: 3160 rc = ethtool_get_settings(dev, useraddr); 3161 break; 3162 case ETHTOOL_SSET: 3163 rc = ethtool_set_settings(dev, useraddr); 3164 break; 3165 case ETHTOOL_GDRVINFO: 3166 rc = ethtool_get_drvinfo(dev, devlink_state); 3167 break; 3168 case ETHTOOL_GREGS: 3169 rc = ethtool_get_regs(dev, useraddr); 3170 break; 3171 case ETHTOOL_GWOL: 3172 rc = ethtool_get_wol(dev, useraddr); 3173 break; 3174 case ETHTOOL_SWOL: 3175 rc = ethtool_set_wol(dev, useraddr); 3176 break; 3177 case ETHTOOL_GMSGLVL: 3178 rc = ethtool_get_value(dev, useraddr, ethcmd, 3179 dev->ethtool_ops->get_msglevel); 3180 break; 3181 case ETHTOOL_SMSGLVL: 3182 rc = ethtool_set_value_void(dev, useraddr, 3183 dev->ethtool_ops->set_msglevel); 3184 if (!rc) 3185 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL); 3186 break; 3187 case ETHTOOL_GEEE: 3188 rc = ethtool_get_eee(dev, useraddr); 3189 break; 3190 case ETHTOOL_SEEE: 3191 rc = ethtool_set_eee(dev, useraddr); 3192 break; 3193 case ETHTOOL_NWAY_RST: 3194 rc = ethtool_nway_reset(dev); 3195 break; 3196 case ETHTOOL_GLINK: 3197 rc = ethtool_get_link(dev, useraddr); 3198 break; 3199 case ETHTOOL_GEEPROM: 3200 rc = ethtool_get_eeprom(dev, useraddr); 3201 break; 3202 case ETHTOOL_SEEPROM: 3203 rc = ethtool_set_eeprom(dev, useraddr); 3204 break; 3205 case ETHTOOL_GCOALESCE: 3206 rc = ethtool_get_coalesce(dev, useraddr); 3207 break; 3208 case ETHTOOL_SCOALESCE: 3209 rc = ethtool_set_coalesce(dev, useraddr); 3210 break; 3211 case ETHTOOL_GRINGPARAM: 3212 rc = ethtool_get_ringparam(dev, useraddr); 3213 break; 3214 case ETHTOOL_SRINGPARAM: 3215 rc = ethtool_set_ringparam(dev, useraddr); 3216 break; 3217 case ETHTOOL_GPAUSEPARAM: 3218 rc = ethtool_get_pauseparam(dev, useraddr); 3219 break; 3220 case ETHTOOL_SPAUSEPARAM: 3221 rc = ethtool_set_pauseparam(dev, useraddr); 3222 break; 3223 case ETHTOOL_TEST: 3224 rc = ethtool_self_test(dev, useraddr); 3225 break; 3226 case ETHTOOL_GSTRINGS: 3227 rc = ethtool_get_strings(dev, useraddr); 3228 break; 3229 case ETHTOOL_PHYS_ID: 3230 rc = ethtool_phys_id(dev, useraddr); 3231 break; 3232 case ETHTOOL_GSTATS: 3233 rc = ethtool_get_stats(dev, useraddr); 3234 break; 3235 case ETHTOOL_GPERMADDR: 3236 rc = ethtool_get_perm_addr(dev, useraddr); 3237 break; 3238 case ETHTOOL_GFLAGS: 3239 rc = ethtool_get_value(dev, useraddr, ethcmd, 3240 __ethtool_get_flags); 3241 break; 3242 case ETHTOOL_SFLAGS: 3243 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); 3244 break; 3245 case ETHTOOL_GPFLAGS: 3246 rc = ethtool_get_value(dev, useraddr, ethcmd, 3247 dev->ethtool_ops->get_priv_flags); 3248 if (!rc) 3249 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL); 3250 break; 3251 case ETHTOOL_SPFLAGS: 3252 rc = ethtool_set_value(dev, useraddr, 3253 dev->ethtool_ops->set_priv_flags); 3254 break; 3255 case ETHTOOL_GRXFH: 3256 case ETHTOOL_GRXRINGS: 3257 case ETHTOOL_GRXCLSRLCNT: 3258 case ETHTOOL_GRXCLSRULE: 3259 case ETHTOOL_GRXCLSRLALL: 3260 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); 3261 break; 3262 case ETHTOOL_SRXFH: 3263 case ETHTOOL_SRXCLSRLDEL: 3264 case ETHTOOL_SRXCLSRLINS: 3265 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); 3266 break; 3267 case ETHTOOL_FLASHDEV: 3268 rc = ethtool_flash_device(dev, devlink_state); 3269 break; 3270 case ETHTOOL_RESET: 3271 rc = ethtool_reset(dev, useraddr); 3272 break; 3273 case ETHTOOL_GSSET_INFO: 3274 rc = ethtool_get_sset_info(dev, useraddr); 3275 break; 3276 case ETHTOOL_GRXFHINDIR: 3277 rc = ethtool_get_rxfh_indir(dev, useraddr); 3278 break; 3279 case ETHTOOL_SRXFHINDIR: 3280 rc = ethtool_set_rxfh_indir(dev, useraddr); 3281 break; 3282 case ETHTOOL_GRSSH: 3283 rc = ethtool_get_rxfh(dev, useraddr); 3284 break; 3285 case ETHTOOL_SRSSH: 3286 rc = ethtool_set_rxfh(dev, useraddr); 3287 break; 3288 case ETHTOOL_GFEATURES: 3289 rc = ethtool_get_features(dev, useraddr); 3290 break; 3291 case ETHTOOL_SFEATURES: 3292 rc = ethtool_set_features(dev, useraddr); 3293 break; 3294 case ETHTOOL_GTXCSUM: 3295 case ETHTOOL_GRXCSUM: 3296 case ETHTOOL_GSG: 3297 case ETHTOOL_GTSO: 3298 case ETHTOOL_GGSO: 3299 case ETHTOOL_GGRO: 3300 rc = ethtool_get_one_feature(dev, useraddr, ethcmd); 3301 break; 3302 case ETHTOOL_STXCSUM: 3303 case ETHTOOL_SRXCSUM: 3304 case ETHTOOL_SSG: 3305 case ETHTOOL_STSO: 3306 case ETHTOOL_SGSO: 3307 case ETHTOOL_SGRO: 3308 rc = ethtool_set_one_feature(dev, useraddr, ethcmd); 3309 break; 3310 case ETHTOOL_GCHANNELS: 3311 rc = ethtool_get_channels(dev, useraddr); 3312 break; 3313 case ETHTOOL_SCHANNELS: 3314 rc = ethtool_set_channels(dev, useraddr); 3315 break; 3316 case ETHTOOL_SET_DUMP: 3317 rc = ethtool_set_dump(dev, useraddr); 3318 break; 3319 case ETHTOOL_GET_DUMP_FLAG: 3320 rc = ethtool_get_dump_flag(dev, useraddr); 3321 break; 3322 case ETHTOOL_GET_DUMP_DATA: 3323 rc = ethtool_get_dump_data(dev, useraddr); 3324 break; 3325 case ETHTOOL_GET_TS_INFO: 3326 rc = ethtool_get_ts_info(dev, useraddr); 3327 break; 3328 case ETHTOOL_GMODULEINFO: 3329 rc = ethtool_get_module_info(dev, useraddr); 3330 break; 3331 case ETHTOOL_GMODULEEEPROM: 3332 rc = ethtool_get_module_eeprom(dev, useraddr); 3333 break; 3334 case ETHTOOL_GTUNABLE: 3335 rc = ethtool_get_tunable(dev, useraddr); 3336 break; 3337 case ETHTOOL_STUNABLE: 3338 rc = ethtool_set_tunable(dev, useraddr); 3339 break; 3340 case ETHTOOL_GPHYSTATS: 3341 rc = ethtool_get_phy_stats(dev, useraddr); 3342 break; 3343 case ETHTOOL_PERQUEUE: 3344 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); 3345 break; 3346 case ETHTOOL_GLINKSETTINGS: 3347 rc = ethtool_get_link_ksettings(dev, useraddr); 3348 break; 3349 case ETHTOOL_SLINKSETTINGS: 3350 rc = ethtool_set_link_ksettings(dev, useraddr); 3351 break; 3352 case ETHTOOL_PHY_GTUNABLE: 3353 rc = get_phy_tunable(dev, useraddr); 3354 break; 3355 case ETHTOOL_PHY_STUNABLE: 3356 rc = set_phy_tunable(dev, useraddr); 3357 break; 3358 case ETHTOOL_GFECPARAM: 3359 rc = ethtool_get_fecparam(dev, useraddr); 3360 break; 3361 case ETHTOOL_SFECPARAM: 3362 rc = ethtool_set_fecparam(dev, useraddr); 3363 break; 3364 default: 3365 rc = -EOPNOTSUPP; 3366 } 3367 3368 if (dev->ethtool_ops->complete) 3369 dev->ethtool_ops->complete(dev); 3370 3371 if (old_features != dev->features) 3372 netdev_features_change(dev); 3373 out: 3374 if (dev->dev.parent) 3375 pm_runtime_put(dev->dev.parent); 3376 3377 return rc; 3378 } 3379 3380 int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) 3381 { 3382 struct ethtool_devlink_compat *state; 3383 u32 ethcmd; 3384 int rc; 3385 3386 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) 3387 return -EFAULT; 3388 3389 state = kzalloc(sizeof(*state), GFP_KERNEL); 3390 if (!state) 3391 return -ENOMEM; 3392 3393 switch (ethcmd) { 3394 case ETHTOOL_FLASHDEV: 3395 if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { 3396 rc = -EFAULT; 3397 goto exit_free; 3398 } 3399 state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; 3400 break; 3401 } 3402 3403 rtnl_lock(); 3404 rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); 3405 rtnl_unlock(); 3406 if (rc) 3407 goto exit_free; 3408 3409 switch (ethcmd) { 3410 case ETHTOOL_FLASHDEV: 3411 if (state->devlink) 3412 rc = devlink_compat_flash_update(state->devlink, 3413 state->efl.data); 3414 break; 3415 case ETHTOOL_GDRVINFO: 3416 if (state->devlink) 3417 devlink_compat_running_version(state->devlink, 3418 state->info.fw_version, 3419 sizeof(state->info.fw_version)); 3420 if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { 3421 rc = -EFAULT; 3422 goto exit_free; 3423 } 3424 break; 3425 } 3426 3427 exit_free: 3428 if (state->devlink) 3429 devlink_put(state->devlink); 3430 kfree(state); 3431 return rc; 3432 } 3433 3434 struct ethtool_rx_flow_key { 3435 struct flow_dissector_key_basic basic; 3436 union { 3437 struct flow_dissector_key_ipv4_addrs ipv4; 3438 struct flow_dissector_key_ipv6_addrs ipv6; 3439 }; 3440 struct flow_dissector_key_ports tp; 3441 struct flow_dissector_key_ip ip; 3442 struct flow_dissector_key_vlan vlan; 3443 struct flow_dissector_key_eth_addrs eth_addrs; 3444 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ 3445 3446 struct ethtool_rx_flow_match { 3447 struct flow_dissector dissector; 3448 struct ethtool_rx_flow_key key; 3449 struct ethtool_rx_flow_key mask; 3450 }; 3451 3452 struct ethtool_rx_flow_rule * 3453 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) 3454 { 3455 const struct ethtool_rx_flow_spec *fs = input->fs; 3456 struct ethtool_rx_flow_match *match; 3457 struct ethtool_rx_flow_rule *flow; 3458 struct flow_action_entry *act; 3459 3460 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + 3461 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); 3462 if (!flow) 3463 return ERR_PTR(-ENOMEM); 3464 3465 /* ethtool_rx supports only one single action per rule. */ 3466 flow->rule = flow_rule_alloc(1); 3467 if (!flow->rule) { 3468 kfree(flow); 3469 return ERR_PTR(-ENOMEM); 3470 } 3471 3472 match = (struct ethtool_rx_flow_match *)flow->priv; 3473 flow->rule->match.dissector = &match->dissector; 3474 flow->rule->match.mask = &match->mask; 3475 flow->rule->match.key = &match->key; 3476 3477 match->mask.basic.n_proto = htons(0xffff); 3478 3479 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3480 case ETHER_FLOW: { 3481 const struct ethhdr *ether_spec, *ether_m_spec; 3482 3483 ether_spec = &fs->h_u.ether_spec; 3484 ether_m_spec = &fs->m_u.ether_spec; 3485 3486 if (!is_zero_ether_addr(ether_m_spec->h_source)) { 3487 ether_addr_copy(match->key.eth_addrs.src, 3488 ether_spec->h_source); 3489 ether_addr_copy(match->mask.eth_addrs.src, 3490 ether_m_spec->h_source); 3491 } 3492 if (!is_zero_ether_addr(ether_m_spec->h_dest)) { 3493 ether_addr_copy(match->key.eth_addrs.dst, 3494 ether_spec->h_dest); 3495 ether_addr_copy(match->mask.eth_addrs.dst, 3496 ether_m_spec->h_dest); 3497 } 3498 if (ether_m_spec->h_proto) { 3499 match->key.basic.n_proto = ether_spec->h_proto; 3500 match->mask.basic.n_proto = ether_m_spec->h_proto; 3501 } 3502 } 3503 break; 3504 case TCP_V4_FLOW: 3505 case UDP_V4_FLOW: { 3506 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; 3507 3508 match->key.basic.n_proto = htons(ETH_P_IP); 3509 3510 v4_spec = &fs->h_u.tcp_ip4_spec; 3511 v4_m_spec = &fs->m_u.tcp_ip4_spec; 3512 3513 if (v4_m_spec->ip4src) { 3514 match->key.ipv4.src = v4_spec->ip4src; 3515 match->mask.ipv4.src = v4_m_spec->ip4src; 3516 } 3517 if (v4_m_spec->ip4dst) { 3518 match->key.ipv4.dst = v4_spec->ip4dst; 3519 match->mask.ipv4.dst = v4_m_spec->ip4dst; 3520 } 3521 if (v4_m_spec->ip4src || 3522 v4_m_spec->ip4dst) { 3523 match->dissector.used_keys |= 3524 BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS); 3525 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = 3526 offsetof(struct ethtool_rx_flow_key, ipv4); 3527 } 3528 if (v4_m_spec->psrc) { 3529 match->key.tp.src = v4_spec->psrc; 3530 match->mask.tp.src = v4_m_spec->psrc; 3531 } 3532 if (v4_m_spec->pdst) { 3533 match->key.tp.dst = v4_spec->pdst; 3534 match->mask.tp.dst = v4_m_spec->pdst; 3535 } 3536 if (v4_m_spec->psrc || 3537 v4_m_spec->pdst) { 3538 match->dissector.used_keys |= 3539 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3540 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3541 offsetof(struct ethtool_rx_flow_key, tp); 3542 } 3543 if (v4_m_spec->tos) { 3544 match->key.ip.tos = v4_spec->tos; 3545 match->mask.ip.tos = v4_m_spec->tos; 3546 match->dissector.used_keys |= 3547 BIT(FLOW_DISSECTOR_KEY_IP); 3548 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3549 offsetof(struct ethtool_rx_flow_key, ip); 3550 } 3551 } 3552 break; 3553 case TCP_V6_FLOW: 3554 case UDP_V6_FLOW: { 3555 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; 3556 3557 match->key.basic.n_proto = htons(ETH_P_IPV6); 3558 3559 v6_spec = &fs->h_u.tcp_ip6_spec; 3560 v6_m_spec = &fs->m_u.tcp_ip6_spec; 3561 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) { 3562 memcpy(&match->key.ipv6.src, v6_spec->ip6src, 3563 sizeof(match->key.ipv6.src)); 3564 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, 3565 sizeof(match->mask.ipv6.src)); 3566 } 3567 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3568 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, 3569 sizeof(match->key.ipv6.dst)); 3570 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, 3571 sizeof(match->mask.ipv6.dst)); 3572 } 3573 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) || 3574 !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3575 match->dissector.used_keys |= 3576 BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS); 3577 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = 3578 offsetof(struct ethtool_rx_flow_key, ipv6); 3579 } 3580 if (v6_m_spec->psrc) { 3581 match->key.tp.src = v6_spec->psrc; 3582 match->mask.tp.src = v6_m_spec->psrc; 3583 } 3584 if (v6_m_spec->pdst) { 3585 match->key.tp.dst = v6_spec->pdst; 3586 match->mask.tp.dst = v6_m_spec->pdst; 3587 } 3588 if (v6_m_spec->psrc || 3589 v6_m_spec->pdst) { 3590 match->dissector.used_keys |= 3591 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3592 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3593 offsetof(struct ethtool_rx_flow_key, tp); 3594 } 3595 if (v6_m_spec->tclass) { 3596 match->key.ip.tos = v6_spec->tclass; 3597 match->mask.ip.tos = v6_m_spec->tclass; 3598 match->dissector.used_keys |= 3599 BIT_ULL(FLOW_DISSECTOR_KEY_IP); 3600 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3601 offsetof(struct ethtool_rx_flow_key, ip); 3602 } 3603 } 3604 break; 3605 default: 3606 ethtool_rx_flow_rule_destroy(flow); 3607 return ERR_PTR(-EINVAL); 3608 } 3609 3610 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3611 case TCP_V4_FLOW: 3612 case TCP_V6_FLOW: 3613 match->key.basic.ip_proto = IPPROTO_TCP; 3614 match->mask.basic.ip_proto = 0xff; 3615 break; 3616 case UDP_V4_FLOW: 3617 case UDP_V6_FLOW: 3618 match->key.basic.ip_proto = IPPROTO_UDP; 3619 match->mask.basic.ip_proto = 0xff; 3620 break; 3621 } 3622 3623 match->dissector.used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_BASIC); 3624 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = 3625 offsetof(struct ethtool_rx_flow_key, basic); 3626 3627 if (fs->flow_type & FLOW_EXT) { 3628 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3629 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3630 3631 if (ext_m_spec->vlan_etype) { 3632 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; 3633 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; 3634 } 3635 3636 if (ext_m_spec->vlan_tci) { 3637 match->key.vlan.vlan_id = 3638 ntohs(ext_h_spec->vlan_tci) & 0x0fff; 3639 match->mask.vlan.vlan_id = 3640 ntohs(ext_m_spec->vlan_tci) & 0x0fff; 3641 3642 match->key.vlan.vlan_dei = 3643 !!(ext_h_spec->vlan_tci & htons(0x1000)); 3644 match->mask.vlan.vlan_dei = 3645 !!(ext_m_spec->vlan_tci & htons(0x1000)); 3646 3647 match->key.vlan.vlan_priority = 3648 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; 3649 match->mask.vlan.vlan_priority = 3650 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; 3651 } 3652 3653 if (ext_m_spec->vlan_etype || 3654 ext_m_spec->vlan_tci) { 3655 match->dissector.used_keys |= 3656 BIT_ULL(FLOW_DISSECTOR_KEY_VLAN); 3657 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = 3658 offsetof(struct ethtool_rx_flow_key, vlan); 3659 } 3660 } 3661 if (fs->flow_type & FLOW_MAC_EXT) { 3662 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3663 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3664 3665 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, 3666 ETH_ALEN); 3667 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, 3668 ETH_ALEN); 3669 3670 match->dissector.used_keys |= 3671 BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS); 3672 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = 3673 offsetof(struct ethtool_rx_flow_key, eth_addrs); 3674 } 3675 3676 act = &flow->rule->action.entries[0]; 3677 switch (fs->ring_cookie) { 3678 case RX_CLS_FLOW_DISC: 3679 act->id = FLOW_ACTION_DROP; 3680 break; 3681 case RX_CLS_FLOW_WAKE: 3682 act->id = FLOW_ACTION_WAKE; 3683 break; 3684 default: 3685 act->id = FLOW_ACTION_QUEUE; 3686 if (fs->flow_type & FLOW_RSS) 3687 act->queue.ctx = input->rss_ctx; 3688 3689 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); 3690 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); 3691 break; 3692 } 3693 3694 return flow; 3695 } 3696 EXPORT_SYMBOL(ethtool_rx_flow_rule_create); 3697 3698 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) 3699 { 3700 kfree(flow->rule); 3701 kfree(flow); 3702 } 3703 EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); 3704