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