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 <linux/ethtool_netlink.h> 31 #include <net/devlink.h> 32 #include <net/ipv6.h> 33 #include <net/flow_offload.h> 34 #include <net/netdev_lock.h> 35 #include <net/netdev_queues.h> 36 37 #include "common.h" 38 39 /* State held across locks and calls for commands which have devlink fallback */ 40 struct ethtool_devlink_compat { 41 struct devlink *devlink; 42 union { 43 struct ethtool_flash efl; 44 struct ethtool_drvinfo info; 45 }; 46 }; 47 48 static struct devlink *netdev_to_devlink_get(struct net_device *dev) 49 { 50 if (!dev->devlink_port) 51 return NULL; 52 return devlink_try_get(dev->devlink_port->devlink); 53 } 54 55 /* 56 * Some useful ethtool_ops methods that're device independent. 57 * If we find that all drivers want to do the same thing here, 58 * we can turn these into dev_() function calls. 59 */ 60 61 u32 ethtool_op_get_link(struct net_device *dev) 62 { 63 /* Synchronize carrier state with link watch, see also rtnl_getlink() */ 64 __linkwatch_sync_dev(dev); 65 66 return netif_carrier_ok(dev) ? 1 : 0; 67 } 68 EXPORT_SYMBOL(ethtool_op_get_link); 69 70 int ethtool_op_get_ts_info(struct net_device *dev, 71 struct kernel_ethtool_ts_info *info) 72 { 73 info->so_timestamping = 74 SOF_TIMESTAMPING_TX_SOFTWARE | 75 SOF_TIMESTAMPING_RX_SOFTWARE | 76 SOF_TIMESTAMPING_SOFTWARE; 77 info->phc_index = -1; 78 return 0; 79 } 80 EXPORT_SYMBOL(ethtool_op_get_ts_info); 81 82 /* Handlers for each ethtool command */ 83 84 static int ethtool_get_features(struct net_device *dev, void __user *useraddr) 85 { 86 struct ethtool_gfeatures cmd = { 87 .cmd = ETHTOOL_GFEATURES, 88 .size = ETHTOOL_DEV_FEATURE_WORDS, 89 }; 90 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 91 u32 __user *sizeaddr; 92 u32 copy_size; 93 int i; 94 95 /* in case feature bits run out again */ 96 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); 97 98 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 99 features[i].available = (u32)(dev->hw_features >> (32 * i)); 100 features[i].requested = (u32)(dev->wanted_features >> (32 * i)); 101 features[i].active = (u32)(dev->features >> (32 * i)); 102 features[i].never_changed = 103 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); 104 } 105 106 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); 107 if (get_user(copy_size, sizeaddr)) 108 return -EFAULT; 109 110 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) 111 copy_size = ETHTOOL_DEV_FEATURE_WORDS; 112 113 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 114 return -EFAULT; 115 useraddr += sizeof(cmd); 116 if (copy_to_user(useraddr, features, 117 array_size(copy_size, sizeof(*features)))) 118 return -EFAULT; 119 120 return 0; 121 } 122 123 static int ethtool_set_features(struct net_device *dev, void __user *useraddr) 124 { 125 struct ethtool_sfeatures cmd; 126 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 127 netdev_features_t wanted = 0, valid = 0; 128 int i, ret = 0; 129 130 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 131 return -EFAULT; 132 useraddr += sizeof(cmd); 133 134 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) 135 return -EINVAL; 136 137 if (copy_from_user(features, useraddr, sizeof(features))) 138 return -EFAULT; 139 140 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 141 valid |= (netdev_features_t)features[i].valid << (32 * i); 142 wanted |= (netdev_features_t)features[i].requested << (32 * i); 143 } 144 145 if (valid & ~NETIF_F_ETHTOOL_BITS) 146 return -EINVAL; 147 148 if (valid & ~dev->hw_features) { 149 valid &= dev->hw_features; 150 ret |= ETHTOOL_F_UNSUPPORTED; 151 } 152 153 dev->wanted_features &= ~valid; 154 dev->wanted_features |= wanted & valid; 155 __netdev_update_features(dev); 156 157 if ((dev->wanted_features ^ dev->features) & valid) 158 ret |= ETHTOOL_F_WISH; 159 160 return ret; 161 } 162 163 static int __ethtool_get_sset_count(struct net_device *dev, int sset) 164 { 165 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 166 const struct ethtool_ops *ops = dev->ethtool_ops; 167 168 if (sset == ETH_SS_FEATURES) 169 return ARRAY_SIZE(netdev_features_strings); 170 171 if (sset == ETH_SS_RSS_HASH_FUNCS) 172 return ARRAY_SIZE(rss_hash_func_strings); 173 174 if (sset == ETH_SS_TUNABLES) 175 return ARRAY_SIZE(tunable_strings); 176 177 if (sset == ETH_SS_PHY_TUNABLES) 178 return ARRAY_SIZE(phy_tunable_strings); 179 180 if (sset == ETH_SS_PHY_STATS && dev->phydev && 181 !ops->get_ethtool_phy_stats && 182 phy_ops && phy_ops->get_sset_count) 183 return phy_ops->get_sset_count(dev->phydev); 184 185 if (sset == ETH_SS_LINK_MODES) 186 return __ETHTOOL_LINK_MODE_MASK_NBITS; 187 188 if (ops->get_sset_count && ops->get_strings) 189 return ops->get_sset_count(dev, sset); 190 else 191 return -EOPNOTSUPP; 192 } 193 194 static void __ethtool_get_strings(struct net_device *dev, 195 u32 stringset, u8 *data) 196 { 197 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 198 const struct ethtool_ops *ops = dev->ethtool_ops; 199 200 if (stringset == ETH_SS_FEATURES) 201 memcpy(data, netdev_features_strings, 202 sizeof(netdev_features_strings)); 203 else if (stringset == ETH_SS_RSS_HASH_FUNCS) 204 memcpy(data, rss_hash_func_strings, 205 sizeof(rss_hash_func_strings)); 206 else if (stringset == ETH_SS_TUNABLES) 207 memcpy(data, tunable_strings, sizeof(tunable_strings)); 208 else if (stringset == ETH_SS_PHY_TUNABLES) 209 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); 210 else if (stringset == ETH_SS_PHY_STATS && dev->phydev && 211 !ops->get_ethtool_phy_stats && phy_ops && 212 phy_ops->get_strings) 213 phy_ops->get_strings(dev->phydev, data); 214 else if (stringset == ETH_SS_LINK_MODES) 215 memcpy(data, link_mode_names, 216 __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN); 217 else 218 /* ops->get_strings is valid because checked earlier */ 219 ops->get_strings(dev, stringset, data); 220 } 221 222 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) 223 { 224 /* feature masks of legacy discrete ethtool ops */ 225 226 switch (eth_cmd) { 227 case ETHTOOL_GTXCSUM: 228 case ETHTOOL_STXCSUM: 229 return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC | 230 NETIF_F_SCTP_CRC; 231 case ETHTOOL_GRXCSUM: 232 case ETHTOOL_SRXCSUM: 233 return NETIF_F_RXCSUM; 234 case ETHTOOL_GSG: 235 case ETHTOOL_SSG: 236 return NETIF_F_SG | NETIF_F_FRAGLIST; 237 case ETHTOOL_GTSO: 238 case ETHTOOL_STSO: 239 return NETIF_F_ALL_TSO; 240 case ETHTOOL_GGSO: 241 case ETHTOOL_SGSO: 242 return NETIF_F_GSO; 243 case ETHTOOL_GGRO: 244 case ETHTOOL_SGRO: 245 return NETIF_F_GRO; 246 default: 247 BUG(); 248 } 249 } 250 251 static int ethtool_get_one_feature(struct net_device *dev, 252 char __user *useraddr, u32 ethcmd) 253 { 254 netdev_features_t mask = ethtool_get_feature_mask(ethcmd); 255 struct ethtool_value edata = { 256 .cmd = ethcmd, 257 .data = !!(dev->features & mask), 258 }; 259 260 if (copy_to_user(useraddr, &edata, sizeof(edata))) 261 return -EFAULT; 262 return 0; 263 } 264 265 static int ethtool_set_one_feature(struct net_device *dev, 266 void __user *useraddr, u32 ethcmd) 267 { 268 struct ethtool_value edata; 269 netdev_features_t mask; 270 271 if (copy_from_user(&edata, useraddr, sizeof(edata))) 272 return -EFAULT; 273 274 mask = ethtool_get_feature_mask(ethcmd); 275 mask &= dev->hw_features; 276 if (!mask) 277 return -EOPNOTSUPP; 278 279 if (edata.data) 280 dev->wanted_features |= mask; 281 else 282 dev->wanted_features &= ~mask; 283 284 __netdev_update_features(dev); 285 286 return 0; 287 } 288 289 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ 290 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) 291 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ 292 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ 293 NETIF_F_RXHASH) 294 295 static u32 __ethtool_get_flags(struct net_device *dev) 296 { 297 u32 flags = 0; 298 299 if (dev->features & NETIF_F_LRO) 300 flags |= ETH_FLAG_LRO; 301 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 302 flags |= ETH_FLAG_RXVLAN; 303 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) 304 flags |= ETH_FLAG_TXVLAN; 305 if (dev->features & NETIF_F_NTUPLE) 306 flags |= ETH_FLAG_NTUPLE; 307 if (dev->features & NETIF_F_RXHASH) 308 flags |= ETH_FLAG_RXHASH; 309 310 return flags; 311 } 312 313 static int __ethtool_set_flags(struct net_device *dev, u32 data) 314 { 315 netdev_features_t features = 0, changed; 316 317 if (data & ~ETH_ALL_FLAGS) 318 return -EINVAL; 319 320 if (data & ETH_FLAG_LRO) 321 features |= NETIF_F_LRO; 322 if (data & ETH_FLAG_RXVLAN) 323 features |= NETIF_F_HW_VLAN_CTAG_RX; 324 if (data & ETH_FLAG_TXVLAN) 325 features |= NETIF_F_HW_VLAN_CTAG_TX; 326 if (data & ETH_FLAG_NTUPLE) 327 features |= NETIF_F_NTUPLE; 328 if (data & ETH_FLAG_RXHASH) 329 features |= NETIF_F_RXHASH; 330 331 /* allow changing only bits set in hw_features */ 332 changed = (features ^ dev->features) & ETH_ALL_FEATURES; 333 if (changed & ~dev->hw_features) 334 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; 335 336 dev->wanted_features = 337 (dev->wanted_features & ~changed) | (features & changed); 338 339 __netdev_update_features(dev); 340 341 return 0; 342 } 343 344 /* Given two link masks, AND them together and save the result in dst. */ 345 void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, 346 struct ethtool_link_ksettings *src) 347 { 348 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); 349 unsigned int idx = 0; 350 351 for (; idx < size; idx++) { 352 dst->link_modes.supported[idx] &= 353 src->link_modes.supported[idx]; 354 dst->link_modes.advertising[idx] &= 355 src->link_modes.advertising[idx]; 356 } 357 } 358 EXPORT_SYMBOL(ethtool_intersect_link_masks); 359 360 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, 361 u32 legacy_u32) 362 { 363 linkmode_zero(dst); 364 dst[0] = legacy_u32; 365 } 366 EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); 367 368 /* return false if src had higher bits set. lower bits always updated. */ 369 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, 370 const unsigned long *src) 371 { 372 *legacy_u32 = src[0]; 373 return find_next_bit(src, __ETHTOOL_LINK_MODE_MASK_NBITS, 32) == 374 __ETHTOOL_LINK_MODE_MASK_NBITS; 375 } 376 EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); 377 378 /* return false if ksettings link modes had higher bits 379 * set. legacy_settings always updated (best effort) 380 */ 381 static bool 382 convert_link_ksettings_to_legacy_settings( 383 struct ethtool_cmd *legacy_settings, 384 const struct ethtool_link_ksettings *link_ksettings) 385 { 386 bool retval = true; 387 388 memset(legacy_settings, 0, sizeof(*legacy_settings)); 389 /* this also clears the deprecated fields in legacy structure: 390 * __u8 transceiver; 391 * __u32 maxtxpkt; 392 * __u32 maxrxpkt; 393 */ 394 395 retval &= ethtool_convert_link_mode_to_legacy_u32( 396 &legacy_settings->supported, 397 link_ksettings->link_modes.supported); 398 retval &= ethtool_convert_link_mode_to_legacy_u32( 399 &legacy_settings->advertising, 400 link_ksettings->link_modes.advertising); 401 retval &= ethtool_convert_link_mode_to_legacy_u32( 402 &legacy_settings->lp_advertising, 403 link_ksettings->link_modes.lp_advertising); 404 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); 405 legacy_settings->duplex 406 = link_ksettings->base.duplex; 407 legacy_settings->port 408 = link_ksettings->base.port; 409 legacy_settings->phy_address 410 = link_ksettings->base.phy_address; 411 legacy_settings->autoneg 412 = link_ksettings->base.autoneg; 413 legacy_settings->mdio_support 414 = link_ksettings->base.mdio_support; 415 legacy_settings->eth_tp_mdix 416 = link_ksettings->base.eth_tp_mdix; 417 legacy_settings->eth_tp_mdix_ctrl 418 = link_ksettings->base.eth_tp_mdix_ctrl; 419 legacy_settings->transceiver 420 = link_ksettings->base.transceiver; 421 return retval; 422 } 423 424 /* number of 32-bit words to store the user's link mode bitmaps */ 425 #define __ETHTOOL_LINK_MODE_MASK_NU32 \ 426 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) 427 428 /* layout of the struct passed from/to userland */ 429 struct ethtool_link_usettings { 430 struct ethtool_link_settings base; 431 struct { 432 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; 433 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 434 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 435 } link_modes; 436 }; 437 438 /* Internal kernel helper to query a device ethtool_link_settings. */ 439 int netif_get_link_ksettings(struct net_device *dev, 440 struct ethtool_link_ksettings *link_ksettings) 441 { 442 netdev_assert_locked_ops_compat(dev); 443 444 if (!dev->ethtool_ops->get_link_ksettings) 445 return -EOPNOTSUPP; 446 447 if (!netif_device_present(dev)) 448 return -ENODEV; 449 450 memset(link_ksettings, 0, sizeof(*link_ksettings)); 451 return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings); 452 } 453 EXPORT_SYMBOL(netif_get_link_ksettings); 454 455 /* Convenience helper for callers that hold only rtnl_lock(). */ 456 int __ethtool_get_link_ksettings(struct net_device *dev, 457 struct ethtool_link_ksettings *link_ksettings) 458 { 459 int ret; 460 461 ASSERT_RTNL(); 462 463 netdev_lock_ops(dev); 464 ret = netif_get_link_ksettings(dev, link_ksettings); 465 netdev_unlock_ops(dev); 466 return ret; 467 } 468 EXPORT_SYMBOL(__ethtool_get_link_ksettings); 469 470 /* convert ethtool_link_usettings in user space to a kernel internal 471 * ethtool_link_ksettings. return 0 on success, errno on error. 472 */ 473 static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, 474 const void __user *from) 475 { 476 struct ethtool_link_usettings link_usettings; 477 478 if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) 479 return -EFAULT; 480 481 memcpy(&to->base, &link_usettings.base, sizeof(to->base)); 482 bitmap_from_arr32(to->link_modes.supported, 483 link_usettings.link_modes.supported, 484 __ETHTOOL_LINK_MODE_MASK_NBITS); 485 bitmap_from_arr32(to->link_modes.advertising, 486 link_usettings.link_modes.advertising, 487 __ETHTOOL_LINK_MODE_MASK_NBITS); 488 bitmap_from_arr32(to->link_modes.lp_advertising, 489 link_usettings.link_modes.lp_advertising, 490 __ETHTOOL_LINK_MODE_MASK_NBITS); 491 492 return 0; 493 } 494 495 /* Check if the user is trying to change anything besides speed/duplex */ 496 bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd) 497 { 498 struct ethtool_link_settings base2 = {}; 499 500 base2.speed = cmd->base.speed; 501 base2.port = PORT_OTHER; 502 base2.duplex = cmd->base.duplex; 503 base2.cmd = cmd->base.cmd; 504 base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords; 505 506 return !memcmp(&base2, &cmd->base, sizeof(base2)) && 507 bitmap_empty(cmd->link_modes.supported, 508 __ETHTOOL_LINK_MODE_MASK_NBITS) && 509 bitmap_empty(cmd->link_modes.lp_advertising, 510 __ETHTOOL_LINK_MODE_MASK_NBITS); 511 } 512 513 /* convert a kernel internal ethtool_link_ksettings to 514 * ethtool_link_usettings in user space. return 0 on success, errno on 515 * error. 516 */ 517 static int 518 store_link_ksettings_for_user(void __user *to, 519 const struct ethtool_link_ksettings *from) 520 { 521 struct ethtool_link_usettings link_usettings; 522 523 memcpy(&link_usettings, from, sizeof(link_usettings)); 524 bitmap_to_arr32(link_usettings.link_modes.supported, 525 from->link_modes.supported, 526 __ETHTOOL_LINK_MODE_MASK_NBITS); 527 bitmap_to_arr32(link_usettings.link_modes.advertising, 528 from->link_modes.advertising, 529 __ETHTOOL_LINK_MODE_MASK_NBITS); 530 bitmap_to_arr32(link_usettings.link_modes.lp_advertising, 531 from->link_modes.lp_advertising, 532 __ETHTOOL_LINK_MODE_MASK_NBITS); 533 534 if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) 535 return -EFAULT; 536 537 return 0; 538 } 539 540 /* Query device for its ethtool_link_settings. */ 541 static int ethtool_get_link_ksettings(struct net_device *dev, 542 void __user *useraddr) 543 { 544 int err = 0; 545 struct ethtool_link_ksettings link_ksettings; 546 547 netdev_assert_locked_ops_compat(dev); 548 if (!dev->ethtool_ops->get_link_ksettings) 549 return -EOPNOTSUPP; 550 551 /* handle bitmap nbits handshake */ 552 if (copy_from_user(&link_ksettings.base, useraddr, 553 sizeof(link_ksettings.base))) 554 return -EFAULT; 555 556 if (__ETHTOOL_LINK_MODE_MASK_NU32 557 != link_ksettings.base.link_mode_masks_nwords) { 558 /* wrong link mode nbits requested */ 559 memset(&link_ksettings, 0, sizeof(link_ksettings)); 560 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 561 /* send back number of words required as negative val */ 562 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, 563 "need too many bits for link modes!"); 564 link_ksettings.base.link_mode_masks_nwords 565 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); 566 567 /* copy the base fields back to user, not the link 568 * mode bitmaps 569 */ 570 if (copy_to_user(useraddr, &link_ksettings.base, 571 sizeof(link_ksettings.base))) 572 return -EFAULT; 573 574 return 0; 575 } 576 577 /* handshake successful: user/kernel agree on 578 * link_mode_masks_nwords 579 */ 580 581 memset(&link_ksettings, 0, sizeof(link_ksettings)); 582 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 583 if (err < 0) 584 return err; 585 586 /* make sure we tell the right values to user */ 587 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 588 link_ksettings.base.link_mode_masks_nwords 589 = __ETHTOOL_LINK_MODE_MASK_NU32; 590 link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED; 591 link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED; 592 link_ksettings.base.rate_matching = RATE_MATCH_NONE; 593 594 return store_link_ksettings_for_user(useraddr, &link_ksettings); 595 } 596 597 /* Update device ethtool_link_settings. */ 598 static int ethtool_set_link_ksettings(struct net_device *dev, 599 void __user *useraddr) 600 { 601 struct ethtool_link_ksettings link_ksettings = {}; 602 int err; 603 604 netdev_assert_locked_ops_compat(dev); 605 606 if (!dev->ethtool_ops->set_link_ksettings) 607 return -EOPNOTSUPP; 608 609 /* make sure nbits field has expected value */ 610 if (copy_from_user(&link_ksettings.base, useraddr, 611 sizeof(link_ksettings.base))) 612 return -EFAULT; 613 614 if (__ETHTOOL_LINK_MODE_MASK_NU32 615 != link_ksettings.base.link_mode_masks_nwords) 616 return -EINVAL; 617 618 /* copy the whole structure, now that we know it has expected 619 * format 620 */ 621 err = load_link_ksettings_from_user(&link_ksettings, useraddr); 622 if (err) 623 return err; 624 625 /* re-check nwords field, just in case */ 626 if (__ETHTOOL_LINK_MODE_MASK_NU32 627 != link_ksettings.base.link_mode_masks_nwords) 628 return -EINVAL; 629 630 if (link_ksettings.base.master_slave_cfg || 631 link_ksettings.base.master_slave_state) 632 return -EINVAL; 633 634 err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 635 if (err >= 0) { 636 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF); 637 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF); 638 } 639 return err; 640 } 641 642 int ethtool_virtdev_set_link_ksettings(struct net_device *dev, 643 const struct ethtool_link_ksettings *cmd, 644 u32 *dev_speed, u8 *dev_duplex) 645 { 646 u32 speed; 647 u8 duplex; 648 649 speed = cmd->base.speed; 650 duplex = cmd->base.duplex; 651 /* don't allow custom speed and duplex */ 652 if (!ethtool_validate_speed(speed) || 653 !ethtool_validate_duplex(duplex) || 654 !ethtool_virtdev_validate_cmd(cmd)) 655 return -EINVAL; 656 *dev_speed = speed; 657 *dev_duplex = duplex; 658 659 return 0; 660 } 661 EXPORT_SYMBOL(ethtool_virtdev_set_link_ksettings); 662 663 /* Query device for its ethtool_cmd settings. 664 * 665 * Backward compatibility note: for compatibility with legacy ethtool, this is 666 * now implemented via get_link_ksettings. When driver reports higher link mode 667 * bits, a kernel warning is logged once (with name of 1st driver/device) to 668 * recommend user to upgrade ethtool, but the command is successful (only the 669 * lower link mode bits reported back to user). Deprecated fields from 670 * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero. 671 */ 672 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) 673 { 674 struct ethtool_link_ksettings link_ksettings; 675 struct ethtool_cmd cmd; 676 int err; 677 678 netdev_assert_locked_ops_compat(dev); 679 if (!dev->ethtool_ops->get_link_ksettings) 680 return -EOPNOTSUPP; 681 682 if (dev->ethtool->module_fw_flash_in_progress) 683 return -EBUSY; 684 685 memset(&link_ksettings, 0, sizeof(link_ksettings)); 686 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 687 if (err < 0) 688 return err; 689 convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings); 690 691 /* send a sensible cmd tag back to user */ 692 cmd.cmd = ETHTOOL_GSET; 693 694 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 695 return -EFAULT; 696 697 return 0; 698 } 699 700 /* Update device link settings with given ethtool_cmd. 701 * 702 * Backward compatibility note: for compatibility with legacy ethtool, this is 703 * now always implemented via set_link_settings. When user's request updates 704 * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel 705 * warning is logged once (with name of 1st driver/device) to recommend user to 706 * upgrade ethtool, and the request is rejected. 707 */ 708 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) 709 { 710 struct ethtool_link_ksettings link_ksettings; 711 struct ethtool_cmd cmd; 712 int ret; 713 714 netdev_assert_locked_ops_compat(dev); 715 716 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 717 return -EFAULT; 718 if (!dev->ethtool_ops->set_link_ksettings) 719 return -EOPNOTSUPP; 720 721 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd)) 722 return -EINVAL; 723 link_ksettings.base.link_mode_masks_nwords = 724 __ETHTOOL_LINK_MODE_MASK_NU32; 725 ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 726 if (ret >= 0) { 727 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF); 728 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF); 729 } 730 return ret; 731 } 732 733 static int 734 ethtool_get_drvinfo(struct net_device *dev, struct ethtool_devlink_compat *rsp) 735 { 736 const struct ethtool_ops *ops = dev->ethtool_ops; 737 struct device *parent = dev->dev.parent; 738 739 rsp->info.cmd = ETHTOOL_GDRVINFO; 740 strscpy(rsp->info.version, init_uts_ns.name.release, 741 sizeof(rsp->info.version)); 742 if (ops->get_drvinfo) { 743 ops->get_drvinfo(dev, &rsp->info); 744 if (!rsp->info.bus_info[0] && parent) 745 strscpy(rsp->info.bus_info, dev_name(parent), 746 sizeof(rsp->info.bus_info)); 747 if (!rsp->info.driver[0] && parent && parent->driver) 748 strscpy(rsp->info.driver, parent->driver->name, 749 sizeof(rsp->info.driver)); 750 } else if (parent && parent->driver) { 751 strscpy(rsp->info.bus_info, dev_name(parent), 752 sizeof(rsp->info.bus_info)); 753 strscpy(rsp->info.driver, parent->driver->name, 754 sizeof(rsp->info.driver)); 755 } else if (dev->rtnl_link_ops) { 756 strscpy(rsp->info.driver, dev->rtnl_link_ops->kind, 757 sizeof(rsp->info.driver)); 758 } else { 759 return -EOPNOTSUPP; 760 } 761 762 /* 763 * this method of obtaining string set info is deprecated; 764 * Use ETHTOOL_GSSET_INFO instead. 765 */ 766 if (ops->get_sset_count) { 767 int rc; 768 769 rc = ops->get_sset_count(dev, ETH_SS_TEST); 770 if (rc >= 0) 771 rsp->info.testinfo_len = rc; 772 rc = ops->get_sset_count(dev, ETH_SS_STATS); 773 if (rc >= 0) 774 rsp->info.n_stats = rc; 775 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); 776 if (rc >= 0) 777 rsp->info.n_priv_flags = rc; 778 } 779 if (ops->get_regs_len) { 780 int ret = ops->get_regs_len(dev); 781 782 if (ret > 0) 783 rsp->info.regdump_len = ret; 784 } 785 786 if (ops->get_eeprom_len) 787 rsp->info.eedump_len = ops->get_eeprom_len(dev); 788 789 if (!rsp->info.fw_version[0]) 790 rsp->devlink = netdev_to_devlink_get(dev); 791 792 return 0; 793 } 794 795 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, 796 void __user *useraddr) 797 { 798 struct ethtool_sset_info info; 799 u64 sset_mask; 800 int i, idx = 0, n_bits = 0, ret, rc; 801 u32 *info_buf = NULL; 802 803 if (copy_from_user(&info, useraddr, sizeof(info))) 804 return -EFAULT; 805 806 /* store copy of mask, because we zero struct later on */ 807 sset_mask = info.sset_mask; 808 if (!sset_mask) 809 return 0; 810 811 /* calculate size of return buffer */ 812 n_bits = hweight64(sset_mask); 813 814 memset(&info, 0, sizeof(info)); 815 info.cmd = ETHTOOL_GSSET_INFO; 816 817 info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER); 818 if (!info_buf) 819 return -ENOMEM; 820 821 /* 822 * fill return buffer based on input bitmask and successful 823 * get_sset_count return 824 */ 825 for (i = 0; i < 64; i++) { 826 if (!(sset_mask & (1ULL << i))) 827 continue; 828 829 rc = __ethtool_get_sset_count(dev, i); 830 if (rc >= 0) { 831 info.sset_mask |= (1ULL << i); 832 info_buf[idx++] = rc; 833 } 834 } 835 836 ret = -EFAULT; 837 if (copy_to_user(useraddr, &info, sizeof(info))) 838 goto out; 839 840 useraddr += offsetof(struct ethtool_sset_info, data); 841 if (copy_to_user(useraddr, info_buf, array_size(idx, sizeof(u32)))) 842 goto out; 843 844 ret = 0; 845 846 out: 847 kfree(info_buf); 848 return ret; 849 } 850 851 static noinline_for_stack int 852 ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc, 853 const struct compat_ethtool_rxnfc __user *useraddr, 854 size_t size) 855 { 856 struct compat_ethtool_rxnfc crxnfc = {}; 857 858 /* We expect there to be holes between fs.m_ext and 859 * fs.ring_cookie and at the end of fs, but nowhere else. 860 * On non-x86, no conversion should be needed. 861 */ 862 BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) && 863 sizeof(struct compat_ethtool_rxnfc) != 864 sizeof(struct ethtool_rxnfc)); 865 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) + 866 sizeof(useraddr->fs.m_ext) != 867 offsetof(struct ethtool_rxnfc, fs.m_ext) + 868 sizeof(rxnfc->fs.m_ext)); 869 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) - 870 offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) != 871 offsetof(struct ethtool_rxnfc, fs.location) - 872 offsetof(struct ethtool_rxnfc, fs.ring_cookie)); 873 874 if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc)))) 875 return -EFAULT; 876 877 *rxnfc = (struct ethtool_rxnfc) { 878 .cmd = crxnfc.cmd, 879 .flow_type = crxnfc.flow_type, 880 .data = crxnfc.data, 881 .fs = { 882 .flow_type = crxnfc.fs.flow_type, 883 .h_u = crxnfc.fs.h_u, 884 .h_ext = crxnfc.fs.h_ext, 885 .m_u = crxnfc.fs.m_u, 886 .m_ext = crxnfc.fs.m_ext, 887 .ring_cookie = crxnfc.fs.ring_cookie, 888 .location = crxnfc.fs.location, 889 }, 890 .rule_cnt = crxnfc.rule_cnt, 891 }; 892 893 return 0; 894 } 895 896 static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc, 897 const void __user *useraddr, 898 size_t size) 899 { 900 if (compat_need_64bit_alignment_fixup()) 901 return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size); 902 903 if (copy_from_user(rxnfc, useraddr, size)) 904 return -EFAULT; 905 906 return 0; 907 } 908 909 static int ethtool_rxnfc_copy_to_compat(void __user *useraddr, 910 const struct ethtool_rxnfc *rxnfc, 911 size_t size, const u32 *rule_buf) 912 { 913 struct compat_ethtool_rxnfc crxnfc; 914 915 memset(&crxnfc, 0, sizeof(crxnfc)); 916 crxnfc = (struct compat_ethtool_rxnfc) { 917 .cmd = rxnfc->cmd, 918 .flow_type = rxnfc->flow_type, 919 .data = rxnfc->data, 920 .fs = { 921 .flow_type = rxnfc->fs.flow_type, 922 .h_u = rxnfc->fs.h_u, 923 .h_ext = rxnfc->fs.h_ext, 924 .m_u = rxnfc->fs.m_u, 925 .m_ext = rxnfc->fs.m_ext, 926 .ring_cookie = rxnfc->fs.ring_cookie, 927 .location = rxnfc->fs.location, 928 }, 929 .rule_cnt = rxnfc->rule_cnt, 930 }; 931 932 if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc)))) 933 return -EFAULT; 934 935 return 0; 936 } 937 938 static int ethtool_rxnfc_copy_struct(u32 cmd, struct ethtool_rxnfc *info, 939 size_t *info_size, void __user *useraddr) 940 { 941 /* struct ethtool_rxnfc was originally defined for 942 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 943 * members. User-space might still be using that 944 * definition. 945 */ 946 if (cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) 947 *info_size = (offsetof(struct ethtool_rxnfc, data) + 948 sizeof(info->data)); 949 950 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) 951 return -EFAULT; 952 953 if ((cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) && info->flow_type & FLOW_RSS) { 954 *info_size = sizeof(*info); 955 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) 956 return -EFAULT; 957 /* Since malicious users may modify the original data, 958 * we need to check whether FLOW_RSS is still requested. 959 */ 960 if (!(info->flow_type & FLOW_RSS)) 961 return -EINVAL; 962 } 963 964 if (info->cmd != cmd) 965 return -EINVAL; 966 967 return 0; 968 } 969 970 static int ethtool_rxnfc_copy_to_user(void __user *useraddr, 971 const struct ethtool_rxnfc *rxnfc, 972 size_t size, const u32 *rule_buf) 973 { 974 int ret; 975 976 if (compat_need_64bit_alignment_fixup()) { 977 ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size, 978 rule_buf); 979 useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs); 980 } else { 981 ret = copy_to_user(useraddr, rxnfc, size); 982 useraddr += offsetof(struct ethtool_rxnfc, rule_locs); 983 } 984 985 if (ret) 986 return -EFAULT; 987 988 if (rule_buf) { 989 if (copy_to_user(useraddr, rule_buf, 990 rxnfc->rule_cnt * sizeof(u32))) 991 return -EFAULT; 992 } 993 994 return 0; 995 } 996 997 static bool flow_type_hashable(u32 flow_type) 998 { 999 switch (flow_type) { 1000 case ETHER_FLOW: 1001 case TCP_V4_FLOW: 1002 case UDP_V4_FLOW: 1003 case SCTP_V4_FLOW: 1004 case AH_ESP_V4_FLOW: 1005 case TCP_V6_FLOW: 1006 case UDP_V6_FLOW: 1007 case SCTP_V6_FLOW: 1008 case AH_ESP_V6_FLOW: 1009 case AH_V4_FLOW: 1010 case ESP_V4_FLOW: 1011 case AH_V6_FLOW: 1012 case ESP_V6_FLOW: 1013 case IPV4_FLOW: 1014 case IPV6_FLOW: 1015 case GTPU_V4_FLOW: 1016 case GTPU_V6_FLOW: 1017 case GTPC_V4_FLOW: 1018 case GTPC_V6_FLOW: 1019 case GTPC_TEID_V4_FLOW: 1020 case GTPC_TEID_V6_FLOW: 1021 case GTPU_EH_V4_FLOW: 1022 case GTPU_EH_V6_FLOW: 1023 case GTPU_UL_V4_FLOW: 1024 case GTPU_UL_V6_FLOW: 1025 case GTPU_DL_V4_FLOW: 1026 case GTPU_DL_V6_FLOW: 1027 return true; 1028 } 1029 1030 return false; 1031 } 1032 1033 static bool flow_type_v6(u32 flow_type) 1034 { 1035 switch (flow_type) { 1036 case TCP_V6_FLOW: 1037 case UDP_V6_FLOW: 1038 case SCTP_V6_FLOW: 1039 case AH_ESP_V6_FLOW: 1040 case AH_V6_FLOW: 1041 case ESP_V6_FLOW: 1042 case IPV6_FLOW: 1043 case GTPU_V6_FLOW: 1044 case GTPC_V6_FLOW: 1045 case GTPC_TEID_V6_FLOW: 1046 case GTPU_EH_V6_FLOW: 1047 case GTPU_UL_V6_FLOW: 1048 case GTPU_DL_V6_FLOW: 1049 return true; 1050 } 1051 1052 return false; 1053 } 1054 1055 /* When adding a new type, update the assert and, if it's hashable, add it to 1056 * the flow_type_hashable switch case. 1057 */ 1058 static_assert(GTPU_DL_V6_FLOW + 1 == __FLOW_TYPE_COUNT); 1059 1060 static int ethtool_check_xfrm_rxfh(u32 input_xfrm, u64 rxfh) 1061 { 1062 /* Sanity check: if symmetric-xor/symmetric-or-xor is set, then: 1063 * 1 - no other fields besides IP src/dst and/or L4 src/dst are set 1064 * 2 - If src is set, dst must also be set 1065 */ 1066 if ((input_xfrm != RXH_XFRM_NO_CHANGE && 1067 input_xfrm & (RXH_XFRM_SYM_XOR | RXH_XFRM_SYM_OR_XOR)) && 1068 !ethtool_rxfh_config_is_sym(rxfh)) 1069 return -EINVAL; 1070 1071 return 0; 1072 } 1073 1074 static int ethtool_check_flow_types(struct net_device *dev, u32 input_xfrm) 1075 { 1076 const struct ethtool_ops *ops = dev->ethtool_ops; 1077 int err; 1078 u32 i; 1079 1080 if (!input_xfrm || input_xfrm == RXH_XFRM_NO_CHANGE) 1081 return 0; 1082 1083 for (i = 0; i < __FLOW_TYPE_COUNT; i++) { 1084 struct ethtool_rxfh_fields fields = { 1085 .flow_type = i, 1086 }; 1087 1088 if (!flow_type_hashable(i)) 1089 continue; 1090 1091 if (ops->get_rxfh_fields(dev, &fields)) 1092 continue; 1093 1094 err = ethtool_check_xfrm_rxfh(input_xfrm, fields.data); 1095 if (err) 1096 return err; 1097 } 1098 1099 return 0; 1100 } 1101 1102 static noinline_for_stack int 1103 ethtool_set_rxfh_fields(struct net_device *dev, u32 cmd, void __user *useraddr) 1104 { 1105 const struct ethtool_ops *ops = dev->ethtool_ops; 1106 struct ethtool_rxfh_fields fields = {}; 1107 struct ethtool_rxnfc info; 1108 size_t info_size = sizeof(info); 1109 int rc; 1110 1111 if (!ops->set_rxfh_fields) 1112 return -EOPNOTSUPP; 1113 1114 rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1115 if (rc) 1116 return rc; 1117 1118 if (info.data & RXH_IP6_FL && !flow_type_v6(info.flow_type)) 1119 return -EINVAL; 1120 1121 if (info.flow_type & FLOW_RSS && info.rss_context && 1122 !ops->rxfh_per_ctx_fields) 1123 return -EINVAL; 1124 1125 mutex_lock(&dev->ethtool->rss_lock); 1126 if (ops->get_rxfh) { 1127 struct ethtool_rxfh_param rxfh = {}; 1128 1129 rc = ops->get_rxfh(dev, &rxfh); 1130 if (rc) 1131 goto exit_unlock; 1132 1133 rc = ethtool_check_xfrm_rxfh(rxfh.input_xfrm, info.data); 1134 if (rc) 1135 goto exit_unlock; 1136 } 1137 1138 fields.data = info.data; 1139 fields.flow_type = info.flow_type & ~FLOW_RSS; 1140 if (info.flow_type & FLOW_RSS) 1141 fields.rss_context = info.rss_context; 1142 1143 rc = ops->set_rxfh_fields(dev, &fields, NULL); 1144 exit_unlock: 1145 mutex_unlock(&dev->ethtool->rss_lock); 1146 if (rc) 1147 return rc; 1148 1149 ethtool_rss_notify(dev, ETHTOOL_MSG_RSS_NTF, fields.rss_context); 1150 return 0; 1151 } 1152 1153 static noinline_for_stack int 1154 ethtool_get_rxfh_fields(struct net_device *dev, u32 cmd, void __user *useraddr) 1155 { 1156 struct ethtool_rxnfc info; 1157 size_t info_size = sizeof(info); 1158 const struct ethtool_ops *ops = dev->ethtool_ops; 1159 struct ethtool_rxfh_fields fields = {}; 1160 int ret; 1161 1162 if (!ops->get_rxfh_fields) 1163 return -EOPNOTSUPP; 1164 1165 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1166 if (ret) 1167 return ret; 1168 1169 if (info.flow_type & FLOW_RSS && info.rss_context && 1170 !ops->rxfh_per_ctx_fields) 1171 return -EINVAL; 1172 1173 fields.flow_type = info.flow_type & ~FLOW_RSS; 1174 if (info.flow_type & FLOW_RSS) 1175 fields.rss_context = info.rss_context; 1176 1177 mutex_lock(&dev->ethtool->rss_lock); 1178 ret = ops->get_rxfh_fields(dev, &fields); 1179 mutex_unlock(&dev->ethtool->rss_lock); 1180 if (ret < 0) 1181 return ret; 1182 1183 info.data = fields.data; 1184 1185 return ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL); 1186 } 1187 1188 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, 1189 u32 cmd, void __user *useraddr) 1190 { 1191 const struct ethtool_ops *ops = dev->ethtool_ops; 1192 struct ethtool_rxnfc info; 1193 size_t info_size = sizeof(info); 1194 int rc; 1195 1196 if (!ops->set_rxnfc) 1197 return -EOPNOTSUPP; 1198 1199 rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1200 if (rc) 1201 return rc; 1202 1203 if (cmd == ETHTOOL_SRXCLSRLINS && info.fs.flow_type & FLOW_RSS) { 1204 /* Nonzero ring with RSS only makes sense 1205 * if NIC adds them together 1206 */ 1207 if (!ops->cap_rss_rxnfc_adds && 1208 ethtool_get_flow_spec_ring(info.fs.ring_cookie)) 1209 return -EINVAL; 1210 1211 if (info.rss_context && 1212 !xa_load(&dev->ethtool->rss_ctx, info.rss_context)) 1213 return -EINVAL; 1214 } 1215 1216 rc = ops->set_rxnfc(dev, &info); 1217 if (rc) 1218 return rc; 1219 1220 if (cmd == ETHTOOL_SRXCLSRLINS && 1221 ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL)) 1222 return -EFAULT; 1223 1224 return 0; 1225 } 1226 1227 static noinline_for_stack int ethtool_get_rxrings(struct net_device *dev, 1228 u32 cmd, 1229 void __user *useraddr) 1230 { 1231 struct ethtool_rxnfc info; 1232 size_t info_size; 1233 int ret; 1234 1235 info_size = sizeof(info); 1236 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1237 if (ret) 1238 return ret; 1239 1240 ret = ethtool_get_rx_ring_count(dev); 1241 if (ret < 0) 1242 return ret; 1243 1244 info.data = ret; 1245 1246 return ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL); 1247 } 1248 1249 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, 1250 u32 cmd, void __user *useraddr) 1251 { 1252 const struct ethtool_ops *ops = dev->ethtool_ops; 1253 struct ethtool_rxnfc info; 1254 void *rule_buf = NULL; 1255 size_t info_size; 1256 int ret; 1257 1258 if (!ops->get_rxnfc) 1259 return -EOPNOTSUPP; 1260 1261 info_size = sizeof(info); 1262 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1263 if (ret) 1264 return ret; 1265 1266 if (info.cmd == ETHTOOL_GRXCLSRLALL) { 1267 if (info.rule_cnt > 0) { 1268 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) 1269 rule_buf = kcalloc(info.rule_cnt, sizeof(u32), 1270 GFP_USER); 1271 if (!rule_buf) 1272 return -ENOMEM; 1273 } 1274 } 1275 1276 ret = ops->get_rxnfc(dev, &info, rule_buf); 1277 if (ret < 0) 1278 goto err_out; 1279 1280 ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf); 1281 err_out: 1282 kfree(rule_buf); 1283 1284 return ret; 1285 } 1286 1287 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, 1288 int num_rx_rings, 1289 u32 size) 1290 { 1291 int i; 1292 1293 if (copy_from_user(indir, useraddr, array_size(size, sizeof(indir[0])))) 1294 return -EFAULT; 1295 1296 /* Validate ring indices */ 1297 for (i = 0; i < size; i++) 1298 if (indir[i] >= num_rx_rings) 1299 return -EINVAL; 1300 1301 return 0; 1302 } 1303 1304 1305 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, 1306 void __user *useraddr) 1307 { 1308 struct ethtool_rxfh_param rxfh = {}; 1309 u32 user_size; 1310 int ret; 1311 1312 if (!dev->ethtool_ops->get_rxfh_indir_size || 1313 !dev->ethtool_ops->get_rxfh) 1314 return -EOPNOTSUPP; 1315 rxfh.indir_size = dev->ethtool_ops->get_rxfh_indir_size(dev); 1316 if (rxfh.indir_size == 0) 1317 return -EOPNOTSUPP; 1318 1319 if (copy_from_user(&user_size, 1320 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1321 sizeof(user_size))) 1322 return -EFAULT; 1323 1324 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), 1325 &rxfh.indir_size, sizeof(rxfh.indir_size))) 1326 return -EFAULT; 1327 1328 /* If the user buffer size is 0, this is just a query for the 1329 * device table size. Otherwise, if it's smaller than the 1330 * device table size it's an error. 1331 */ 1332 if (user_size < rxfh.indir_size) 1333 return user_size == 0 ? 0 : -EINVAL; 1334 1335 rxfh.indir = kcalloc(rxfh.indir_size, sizeof(rxfh.indir[0]), GFP_USER); 1336 if (!rxfh.indir) 1337 return -ENOMEM; 1338 1339 mutex_lock(&dev->ethtool->rss_lock); 1340 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh); 1341 mutex_unlock(&dev->ethtool->rss_lock); 1342 if (ret) 1343 goto out; 1344 if (copy_to_user(useraddr + 1345 offsetof(struct ethtool_rxfh_indir, ring_index[0]), 1346 rxfh.indir, rxfh.indir_size * sizeof(*rxfh.indir))) 1347 ret = -EFAULT; 1348 1349 out: 1350 kfree(rxfh.indir); 1351 return ret; 1352 } 1353 1354 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, 1355 void __user *useraddr) 1356 { 1357 const struct ethtool_ops *ops = dev->ethtool_ops; 1358 struct ethtool_rxfh_param rxfh_dev = {}; 1359 struct netlink_ext_ack *extack = NULL; 1360 int num_rx_rings; 1361 u32 user_size, i; 1362 int ret; 1363 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); 1364 1365 if (!ops->get_rxfh_indir_size || !ops->set_rxfh) 1366 return -EOPNOTSUPP; 1367 1368 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1369 if (rxfh_dev.indir_size == 0) 1370 return -EOPNOTSUPP; 1371 1372 if (copy_from_user(&user_size, 1373 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1374 sizeof(user_size))) 1375 return -EFAULT; 1376 1377 if (user_size != 0 && user_size != rxfh_dev.indir_size) 1378 return -EINVAL; 1379 1380 rxfh_dev.indir = kcalloc(rxfh_dev.indir_size, 1381 sizeof(rxfh_dev.indir[0]), GFP_USER); 1382 if (!rxfh_dev.indir) 1383 return -ENOMEM; 1384 1385 num_rx_rings = ethtool_get_rx_ring_count(dev); 1386 if (num_rx_rings < 0) { 1387 ret = num_rx_rings; 1388 goto out; 1389 } 1390 1391 if (user_size == 0) { 1392 u32 *indir = rxfh_dev.indir; 1393 1394 for (i = 0; i < rxfh_dev.indir_size; i++) 1395 indir[i] = ethtool_rxfh_indir_default(i, num_rx_rings); 1396 } else { 1397 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1398 useraddr + ringidx_offset, 1399 num_rx_rings, 1400 rxfh_dev.indir_size); 1401 if (ret) 1402 goto out; 1403 } 1404 1405 rxfh_dev.hfunc = ETH_RSS_HASH_NO_CHANGE; 1406 1407 mutex_lock(&dev->ethtool->rss_lock); 1408 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1409 if (ret) 1410 goto out_unlock; 1411 1412 /* indicate whether rxfh was set to default */ 1413 if (user_size == 0) 1414 dev->ethtool->rss_indir_user_size = 0; 1415 else 1416 dev->ethtool->rss_indir_user_size = rxfh_dev.indir_size; 1417 1418 out_unlock: 1419 mutex_unlock(&dev->ethtool->rss_lock); 1420 out: 1421 kfree(rxfh_dev.indir); 1422 return ret; 1423 } 1424 1425 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, 1426 void __user *useraddr) 1427 { 1428 const struct ethtool_ops *ops = dev->ethtool_ops; 1429 struct ethtool_rxfh_param rxfh_dev = {}; 1430 u32 user_indir_size, user_key_size; 1431 struct ethtool_rxfh_context *ctx; 1432 struct ethtool_rxfh rxfh; 1433 u32 indir_bytes; 1434 u8 *rss_config; 1435 u32 total_size; 1436 int ret; 1437 1438 if (!ops->get_rxfh) 1439 return -EOPNOTSUPP; 1440 1441 if (ops->get_rxfh_indir_size) 1442 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1443 if (ops->get_rxfh_key_size) 1444 rxfh_dev.key_size = ops->get_rxfh_key_size(dev); 1445 1446 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1447 return -EFAULT; 1448 user_indir_size = rxfh.indir_size; 1449 user_key_size = rxfh.key_size; 1450 1451 /* Check that reserved fields are 0 for now */ 1452 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1453 return -EINVAL; 1454 /* Most drivers don't handle rss_context, check it's 0 as well */ 1455 if (rxfh.rss_context && !ops->create_rxfh_context) 1456 return -EOPNOTSUPP; 1457 1458 rxfh.indir_size = rxfh_dev.indir_size; 1459 rxfh.key_size = rxfh_dev.key_size; 1460 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) 1461 return -EFAULT; 1462 1463 if ((user_indir_size && user_indir_size != rxfh_dev.indir_size) || 1464 (user_key_size && user_key_size != rxfh_dev.key_size)) 1465 return -EINVAL; 1466 1467 indir_bytes = user_indir_size * sizeof(rxfh_dev.indir[0]); 1468 total_size = indir_bytes + user_key_size; 1469 rss_config = kzalloc(total_size, GFP_USER); 1470 if (!rss_config) 1471 return -ENOMEM; 1472 1473 if (user_indir_size) 1474 rxfh_dev.indir = (u32 *)rss_config; 1475 1476 if (user_key_size) 1477 rxfh_dev.key = rss_config + indir_bytes; 1478 1479 mutex_lock(&dev->ethtool->rss_lock); 1480 if (rxfh.rss_context) { 1481 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1482 if (!ctx) { 1483 ret = -ENOENT; 1484 goto out; 1485 } 1486 if (rxfh_dev.indir) 1487 memcpy(rxfh_dev.indir, ethtool_rxfh_context_indir(ctx), 1488 indir_bytes); 1489 if (!ops->rxfh_per_ctx_key) { 1490 rxfh_dev.key_size = 0; 1491 } else { 1492 if (rxfh_dev.key) 1493 memcpy(rxfh_dev.key, 1494 ethtool_rxfh_context_key(ctx), 1495 user_key_size); 1496 rxfh_dev.hfunc = ctx->hfunc; 1497 } 1498 rxfh_dev.input_xfrm = ctx->input_xfrm; 1499 ret = 0; 1500 } else { 1501 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh_dev); 1502 if (ret) 1503 goto out; 1504 } 1505 1506 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), 1507 &rxfh_dev.hfunc, sizeof(rxfh.hfunc))) { 1508 ret = -EFAULT; 1509 } else if (copy_to_user(useraddr + 1510 offsetof(struct ethtool_rxfh, input_xfrm), 1511 &rxfh_dev.input_xfrm, 1512 sizeof(rxfh.input_xfrm))) { 1513 ret = -EFAULT; 1514 } else if (copy_to_user(useraddr + 1515 offsetof(struct ethtool_rxfh, key_size), 1516 &rxfh_dev.key_size, 1517 sizeof(rxfh.key_size))) { 1518 ret = -EFAULT; 1519 } else if (copy_to_user(useraddr + 1520 offsetof(struct ethtool_rxfh, rss_config[0]), 1521 rss_config, total_size)) { 1522 ret = -EFAULT; 1523 } 1524 out: 1525 mutex_unlock(&dev->ethtool->rss_lock); 1526 kfree(rss_config); 1527 1528 return ret; 1529 } 1530 1531 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, 1532 void __user *useraddr) 1533 { 1534 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); 1535 const struct ethtool_ops *ops = dev->ethtool_ops; 1536 u32 dev_indir_size = 0, dev_key_size = 0, i; 1537 u32 user_indir_len = 0, indir_bytes = 0; 1538 struct ethtool_rxfh_param rxfh_dev = {}; 1539 struct ethtool_rxfh_context *ctx = NULL; 1540 struct netlink_ext_ack *extack = NULL; 1541 struct ethtool_rxfh rxfh; 1542 bool create = false; 1543 int num_rx_rings; 1544 u8 *rss_config; 1545 int ntf = 0; 1546 int ret; 1547 1548 if (!ops->set_rxfh) 1549 return -EOPNOTSUPP; 1550 1551 if (ops->get_rxfh_indir_size) 1552 dev_indir_size = ops->get_rxfh_indir_size(dev); 1553 if (ops->get_rxfh_key_size) 1554 dev_key_size = ops->get_rxfh_key_size(dev); 1555 1556 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1557 return -EFAULT; 1558 1559 /* Check that reserved fields are 0 for now */ 1560 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1561 return -EINVAL; 1562 /* Most drivers don't handle rss_context, check it's 0 as well */ 1563 if (rxfh.rss_context && !ops->create_rxfh_context) 1564 return -EOPNOTSUPP; 1565 /* Check input data transformation capabilities */ 1566 if (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_SYM_XOR && 1567 rxfh.input_xfrm != RXH_XFRM_SYM_OR_XOR && 1568 rxfh.input_xfrm != RXH_XFRM_NO_CHANGE) 1569 return -EINVAL; 1570 if (rxfh.input_xfrm != RXH_XFRM_NO_CHANGE && 1571 rxfh.input_xfrm & ~ops->supported_input_xfrm) 1572 return -EOPNOTSUPP; 1573 create = rxfh.rss_context == ETH_RXFH_CONTEXT_ALLOC; 1574 1575 if ((rxfh.indir_size && 1576 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && 1577 rxfh.indir_size != dev_indir_size) || 1578 (rxfh.key_size && rxfh.key_size != dev_key_size)) 1579 return -EINVAL; 1580 1581 /* Must request at least one change: indir size, hash key, function 1582 * or input transformation. 1583 * There's no need for any of it in case of context creation. 1584 */ 1585 if (!create && 1586 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && 1587 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE && 1588 rxfh.input_xfrm == RXH_XFRM_NO_CHANGE)) 1589 return -EINVAL; 1590 1591 indir_bytes = dev_indir_size * sizeof(rxfh_dev.indir[0]); 1592 1593 /* Check settings which may be global rather than per RSS-context */ 1594 if (rxfh.rss_context && !ops->rxfh_per_ctx_key) 1595 if (rxfh.key_size || 1596 (rxfh.hfunc && rxfh.hfunc != ETH_RSS_HASH_NO_CHANGE) || 1597 (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_NO_CHANGE)) 1598 return -EOPNOTSUPP; 1599 1600 rss_config = kzalloc(indir_bytes + dev_key_size, GFP_USER); 1601 if (!rss_config) 1602 return -ENOMEM; 1603 1604 num_rx_rings = ethtool_get_rx_ring_count(dev); 1605 if (num_rx_rings < 0) { 1606 ret = num_rx_rings; 1607 goto out_free; 1608 } 1609 1610 /* rxfh.indir_size == 0 means reset the indir table to default (master 1611 * context) or delete the context (other RSS contexts). 1612 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. 1613 */ 1614 if (rxfh.indir_size && 1615 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { 1616 user_indir_len = indir_bytes; 1617 rxfh_dev.indir = (u32 *)rss_config; 1618 rxfh_dev.indir_size = dev_indir_size; 1619 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1620 useraddr + rss_cfg_offset, 1621 num_rx_rings, 1622 rxfh.indir_size); 1623 if (ret) 1624 goto out_free; 1625 } else if (rxfh.indir_size == 0) { 1626 if (rxfh.rss_context == 0) { 1627 u32 *indir; 1628 1629 rxfh_dev.indir = (u32 *)rss_config; 1630 rxfh_dev.indir_size = dev_indir_size; 1631 indir = rxfh_dev.indir; 1632 for (i = 0; i < dev_indir_size; i++) 1633 indir[i] = 1634 ethtool_rxfh_indir_default(i, num_rx_rings); 1635 } else { 1636 rxfh_dev.rss_delete = true; 1637 } 1638 } 1639 1640 if (rxfh.key_size) { 1641 rxfh_dev.key_size = dev_key_size; 1642 rxfh_dev.key = rss_config + indir_bytes; 1643 if (copy_from_user(rxfh_dev.key, 1644 useraddr + rss_cfg_offset + user_indir_len, 1645 rxfh.key_size)) { 1646 ret = -EFAULT; 1647 goto out_free; 1648 } 1649 } 1650 1651 mutex_lock(&dev->ethtool->rss_lock); 1652 1653 ret = ethtool_check_flow_types(dev, rxfh.input_xfrm); 1654 if (ret) 1655 goto out_unlock; 1656 1657 if (rxfh.rss_context && rxfh_dev.rss_delete) { 1658 ret = ethtool_check_rss_ctx_busy(dev, rxfh.rss_context); 1659 if (ret) 1660 goto out_unlock; 1661 } 1662 1663 if (create) { 1664 u32 limit, ctx_id; 1665 1666 if (rxfh_dev.rss_delete) { 1667 ret = -EINVAL; 1668 goto out_unlock; 1669 } 1670 ctx = ethtool_rxfh_ctx_alloc(ops, dev_indir_size, dev_key_size); 1671 if (!ctx) { 1672 ret = -ENOMEM; 1673 goto out_unlock; 1674 } 1675 1676 limit = ops->rxfh_max_num_contexts ?: U32_MAX; 1677 ret = xa_alloc(&dev->ethtool->rss_ctx, &ctx_id, ctx, 1678 XA_LIMIT(1, limit - 1), GFP_KERNEL_ACCOUNT); 1679 if (ret < 0) { 1680 kfree(ctx); 1681 goto out_unlock; 1682 } 1683 WARN_ON(!ctx_id); /* can't happen */ 1684 rxfh.rss_context = ctx_id; 1685 } else if (rxfh.rss_context) { 1686 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1687 if (!ctx) { 1688 ret = -ENOENT; 1689 goto out_unlock; 1690 } 1691 } 1692 rxfh_dev.hfunc = rxfh.hfunc; 1693 rxfh_dev.rss_context = rxfh.rss_context; 1694 rxfh_dev.input_xfrm = rxfh.input_xfrm; 1695 1696 if (!rxfh.rss_context) { 1697 ntf = ETHTOOL_MSG_RSS_NTF; 1698 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1699 } else if (create) { 1700 ntf = ETHTOOL_MSG_RSS_CREATE_NTF; 1701 ret = ops->create_rxfh_context(dev, ctx, &rxfh_dev, extack); 1702 /* Make sure driver populates defaults */ 1703 WARN_ON_ONCE(!ret && !rxfh_dev.key && ops->rxfh_per_ctx_key && 1704 !memchr_inv(ethtool_rxfh_context_key(ctx), 0, 1705 ctx->key_size)); 1706 } else if (rxfh_dev.rss_delete) { 1707 ntf = ETHTOOL_MSG_RSS_DELETE_NTF; 1708 ret = ops->remove_rxfh_context(dev, ctx, rxfh.rss_context, 1709 extack); 1710 } else { 1711 ntf = ETHTOOL_MSG_RSS_NTF; 1712 ret = ops->modify_rxfh_context(dev, ctx, &rxfh_dev, extack); 1713 } 1714 if (ret) { 1715 ntf = 0; 1716 if (create) { 1717 /* failed to create, free our new tracking entry */ 1718 xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context); 1719 kfree(ctx); 1720 } 1721 goto out_unlock; 1722 } 1723 1724 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), 1725 &rxfh_dev.rss_context, sizeof(rxfh_dev.rss_context))) 1726 ret = -EFAULT; 1727 1728 if (!rxfh_dev.rss_context) { 1729 /* indicate whether rxfh was set to default */ 1730 if (rxfh.indir_size == 0) 1731 dev->ethtool->rss_indir_user_size = 0; 1732 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1733 dev->ethtool->rss_indir_user_size = dev_indir_size; 1734 } 1735 /* Update rss_ctx tracking */ 1736 if (rxfh_dev.rss_delete) { 1737 WARN_ON(xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context) != ctx); 1738 kfree(ctx); 1739 } else if (ctx) { 1740 if (rxfh_dev.indir) { 1741 for (i = 0; i < dev_indir_size; i++) 1742 ethtool_rxfh_context_indir(ctx)[i] = rxfh_dev.indir[i]; 1743 ctx->indir_configured = 1744 rxfh.indir_size && 1745 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE; 1746 ctx->indir_user_size = dev_indir_size; 1747 } 1748 if (rxfh_dev.key) { 1749 memcpy(ethtool_rxfh_context_key(ctx), rxfh_dev.key, 1750 dev_key_size); 1751 ctx->key_configured = !!rxfh.key_size; 1752 } 1753 if (rxfh_dev.hfunc != ETH_RSS_HASH_NO_CHANGE) 1754 ctx->hfunc = rxfh_dev.hfunc; 1755 if (rxfh_dev.input_xfrm != RXH_XFRM_NO_CHANGE) 1756 ctx->input_xfrm = rxfh_dev.input_xfrm; 1757 } 1758 1759 out_unlock: 1760 mutex_unlock(&dev->ethtool->rss_lock); 1761 out_free: 1762 kfree(rss_config); 1763 if (ntf) 1764 ethtool_rss_notify(dev, ntf, rxfh.rss_context); 1765 return ret; 1766 } 1767 1768 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) 1769 { 1770 struct ethtool_regs regs; 1771 const struct ethtool_ops *ops = dev->ethtool_ops; 1772 void *regbuf; 1773 int reglen, ret; 1774 1775 if (!ops->get_regs || !ops->get_regs_len) 1776 return -EOPNOTSUPP; 1777 1778 if (copy_from_user(®s, useraddr, sizeof(regs))) 1779 return -EFAULT; 1780 1781 reglen = ops->get_regs_len(dev); 1782 if (reglen <= 0) 1783 return reglen; 1784 1785 if (regs.len > reglen) 1786 regs.len = reglen; 1787 1788 regbuf = vzalloc(reglen); 1789 if (!regbuf) 1790 return -ENOMEM; 1791 1792 if (regs.len < reglen) 1793 reglen = regs.len; 1794 1795 ops->get_regs(dev, ®s, regbuf); 1796 1797 ret = -EFAULT; 1798 if (copy_to_user(useraddr, ®s, sizeof(regs))) 1799 goto out; 1800 useraddr += offsetof(struct ethtool_regs, data); 1801 if (copy_to_user(useraddr, regbuf, reglen)) 1802 goto out; 1803 ret = 0; 1804 1805 out: 1806 vfree(regbuf); 1807 return ret; 1808 } 1809 1810 static int ethtool_reset(struct net_device *dev, char __user *useraddr) 1811 { 1812 struct ethtool_value reset; 1813 int ret; 1814 1815 if (!dev->ethtool_ops->reset) 1816 return -EOPNOTSUPP; 1817 1818 if (dev->ethtool->module_fw_flash_in_progress) 1819 return -EBUSY; 1820 1821 if (copy_from_user(&reset, useraddr, sizeof(reset))) 1822 return -EFAULT; 1823 1824 ret = dev->ethtool_ops->reset(dev, &reset.data); 1825 if (ret) 1826 return ret; 1827 1828 if (copy_to_user(useraddr, &reset, sizeof(reset))) 1829 return -EFAULT; 1830 return 0; 1831 } 1832 1833 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) 1834 { 1835 struct ethtool_wolinfo wol; 1836 1837 if (!dev->ethtool_ops->get_wol) 1838 return -EOPNOTSUPP; 1839 1840 memset(&wol, 0, sizeof(struct ethtool_wolinfo)); 1841 wol.cmd = ETHTOOL_GWOL; 1842 dev->ethtool_ops->get_wol(dev, &wol); 1843 1844 if (copy_to_user(useraddr, &wol, sizeof(wol))) 1845 return -EFAULT; 1846 return 0; 1847 } 1848 1849 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) 1850 { 1851 struct ethtool_wolinfo wol, cur_wol; 1852 int ret; 1853 1854 if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol) 1855 return -EOPNOTSUPP; 1856 1857 memset(&cur_wol, 0, sizeof(struct ethtool_wolinfo)); 1858 cur_wol.cmd = ETHTOOL_GWOL; 1859 dev->ethtool_ops->get_wol(dev, &cur_wol); 1860 1861 if (copy_from_user(&wol, useraddr, sizeof(wol))) 1862 return -EFAULT; 1863 1864 if (wol.wolopts & ~cur_wol.supported) 1865 return -EINVAL; 1866 1867 if (wol.wolopts == cur_wol.wolopts && 1868 !memcmp(wol.sopass, cur_wol.sopass, sizeof(wol.sopass))) 1869 return 0; 1870 1871 ret = dev->ethtool_ops->set_wol(dev, &wol); 1872 if (ret) 1873 return ret; 1874 1875 dev->ethtool->wol_enabled = !!wol.wolopts; 1876 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF); 1877 1878 return 0; 1879 } 1880 1881 static void eee_to_keee(struct ethtool_keee *keee, 1882 const struct ethtool_eee *eee) 1883 { 1884 memset(keee, 0, sizeof(*keee)); 1885 1886 keee->eee_enabled = eee->eee_enabled; 1887 keee->tx_lpi_enabled = eee->tx_lpi_enabled; 1888 keee->tx_lpi_timer = eee->tx_lpi_timer; 1889 1890 ethtool_convert_legacy_u32_to_link_mode(keee->advertised, 1891 eee->advertised); 1892 } 1893 1894 static void keee_to_eee(struct ethtool_eee *eee, 1895 const struct ethtool_keee *keee) 1896 { 1897 bool overflow; 1898 1899 memset(eee, 0, sizeof(*eee)); 1900 1901 eee->eee_active = keee->eee_active; 1902 eee->eee_enabled = keee->eee_enabled; 1903 eee->tx_lpi_enabled = keee->tx_lpi_enabled; 1904 eee->tx_lpi_timer = keee->tx_lpi_timer; 1905 1906 overflow = !ethtool_convert_link_mode_to_legacy_u32(&eee->supported, 1907 keee->supported); 1908 ethtool_convert_link_mode_to_legacy_u32(&eee->advertised, 1909 keee->advertised); 1910 ethtool_convert_link_mode_to_legacy_u32(&eee->lp_advertised, 1911 keee->lp_advertised); 1912 if (overflow) 1913 pr_warn("Ethtool ioctl interface doesn't support passing EEE linkmodes beyond bit 32\n"); 1914 } 1915 1916 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) 1917 { 1918 struct ethtool_keee keee; 1919 struct ethtool_eee eee; 1920 int rc; 1921 1922 if (!dev->ethtool_ops->get_eee) 1923 return -EOPNOTSUPP; 1924 1925 memset(&keee, 0, sizeof(keee)); 1926 rc = dev->ethtool_ops->get_eee(dev, &keee); 1927 if (rc) 1928 return rc; 1929 1930 keee_to_eee(&eee, &keee); 1931 if (copy_to_user(useraddr, &eee, sizeof(eee))) 1932 return -EFAULT; 1933 1934 return 0; 1935 } 1936 1937 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) 1938 { 1939 struct ethtool_keee keee; 1940 struct ethtool_eee eee; 1941 int ret; 1942 1943 if (!dev->ethtool_ops->set_eee) 1944 return -EOPNOTSUPP; 1945 1946 if (copy_from_user(&eee, useraddr, sizeof(eee))) 1947 return -EFAULT; 1948 1949 eee_to_keee(&keee, &eee); 1950 ret = dev->ethtool_ops->set_eee(dev, &keee); 1951 if (!ret) 1952 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF); 1953 return ret; 1954 } 1955 1956 static int ethtool_nway_reset(struct net_device *dev) 1957 { 1958 if (!dev->ethtool_ops->nway_reset) 1959 return -EOPNOTSUPP; 1960 1961 return dev->ethtool_ops->nway_reset(dev); 1962 } 1963 1964 static int ethtool_get_link(struct net_device *dev, char __user *useraddr) 1965 { 1966 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; 1967 int link = __ethtool_get_link(dev); 1968 1969 if (link < 0) 1970 return link; 1971 1972 edata.data = link; 1973 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1974 return -EFAULT; 1975 return 0; 1976 } 1977 1978 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, 1979 int (*getter)(struct net_device *, 1980 struct ethtool_eeprom *, u8 *), 1981 u32 total_len) 1982 { 1983 struct ethtool_eeprom eeprom; 1984 void __user *userbuf = useraddr + sizeof(eeprom); 1985 u32 bytes_remaining; 1986 u8 *data; 1987 int ret = 0; 1988 1989 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1990 return -EFAULT; 1991 1992 /* Check for wrap and zero */ 1993 if (eeprom.offset + eeprom.len <= eeprom.offset) 1994 return -EINVAL; 1995 1996 /* Check for exceeding total eeprom len */ 1997 if (eeprom.offset + eeprom.len > total_len) 1998 return -EINVAL; 1999 2000 data = kzalloc(PAGE_SIZE, GFP_USER); 2001 if (!data) 2002 return -ENOMEM; 2003 2004 bytes_remaining = eeprom.len; 2005 while (bytes_remaining > 0) { 2006 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 2007 2008 ret = getter(dev, &eeprom, data); 2009 if (ret) 2010 break; 2011 if (!eeprom.len) { 2012 ret = -EIO; 2013 break; 2014 } 2015 if (copy_to_user(userbuf, data, eeprom.len)) { 2016 ret = -EFAULT; 2017 break; 2018 } 2019 userbuf += eeprom.len; 2020 eeprom.offset += eeprom.len; 2021 bytes_remaining -= eeprom.len; 2022 } 2023 2024 eeprom.len = userbuf - (useraddr + sizeof(eeprom)); 2025 eeprom.offset -= eeprom.len; 2026 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) 2027 ret = -EFAULT; 2028 2029 kfree(data); 2030 return ret; 2031 } 2032 2033 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) 2034 { 2035 const struct ethtool_ops *ops = dev->ethtool_ops; 2036 2037 if (!ops->get_eeprom || !ops->get_eeprom_len || 2038 !ops->get_eeprom_len(dev)) 2039 return -EOPNOTSUPP; 2040 2041 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, 2042 ops->get_eeprom_len(dev)); 2043 } 2044 2045 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) 2046 { 2047 struct ethtool_eeprom eeprom; 2048 const struct ethtool_ops *ops = dev->ethtool_ops; 2049 void __user *userbuf = useraddr + sizeof(eeprom); 2050 u32 bytes_remaining; 2051 u8 *data; 2052 int ret = 0; 2053 2054 if (!ops->set_eeprom || !ops->get_eeprom_len || 2055 !ops->get_eeprom_len(dev)) 2056 return -EOPNOTSUPP; 2057 2058 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 2059 return -EFAULT; 2060 2061 /* Check for wrap and zero */ 2062 if (eeprom.offset + eeprom.len <= eeprom.offset) 2063 return -EINVAL; 2064 2065 /* Check for exceeding total eeprom len */ 2066 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) 2067 return -EINVAL; 2068 2069 data = kzalloc(PAGE_SIZE, GFP_USER); 2070 if (!data) 2071 return -ENOMEM; 2072 2073 bytes_remaining = eeprom.len; 2074 while (bytes_remaining > 0) { 2075 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 2076 2077 if (copy_from_user(data, userbuf, eeprom.len)) { 2078 ret = -EFAULT; 2079 break; 2080 } 2081 ret = ops->set_eeprom(dev, &eeprom, data); 2082 if (ret) 2083 break; 2084 userbuf += eeprom.len; 2085 eeprom.offset += eeprom.len; 2086 bytes_remaining -= eeprom.len; 2087 } 2088 2089 kfree(data); 2090 return ret; 2091 } 2092 2093 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, 2094 void __user *useraddr) 2095 { 2096 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2097 struct kernel_ethtool_coalesce kernel_coalesce = {}; 2098 int ret; 2099 2100 if (!dev->ethtool_ops->get_coalesce) 2101 return -EOPNOTSUPP; 2102 2103 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 2104 NULL); 2105 if (ret) 2106 return ret; 2107 2108 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2109 return -EFAULT; 2110 return 0; 2111 } 2112 2113 static bool 2114 ethtool_set_coalesce_supported(struct net_device *dev, 2115 struct ethtool_coalesce *coalesce) 2116 { 2117 u32 supported_params = dev->ethtool_ops->supported_coalesce_params; 2118 u32 nonzero_params = 0; 2119 2120 if (coalesce->rx_coalesce_usecs) 2121 nonzero_params |= ETHTOOL_COALESCE_RX_USECS; 2122 if (coalesce->rx_max_coalesced_frames) 2123 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; 2124 if (coalesce->rx_coalesce_usecs_irq) 2125 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; 2126 if (coalesce->rx_max_coalesced_frames_irq) 2127 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; 2128 if (coalesce->tx_coalesce_usecs) 2129 nonzero_params |= ETHTOOL_COALESCE_TX_USECS; 2130 if (coalesce->tx_max_coalesced_frames) 2131 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; 2132 if (coalesce->tx_coalesce_usecs_irq) 2133 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; 2134 if (coalesce->tx_max_coalesced_frames_irq) 2135 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; 2136 if (coalesce->stats_block_coalesce_usecs) 2137 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; 2138 if (coalesce->use_adaptive_rx_coalesce) 2139 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; 2140 if (coalesce->use_adaptive_tx_coalesce) 2141 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; 2142 if (coalesce->pkt_rate_low) 2143 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; 2144 if (coalesce->rx_coalesce_usecs_low) 2145 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; 2146 if (coalesce->rx_max_coalesced_frames_low) 2147 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; 2148 if (coalesce->tx_coalesce_usecs_low) 2149 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; 2150 if (coalesce->tx_max_coalesced_frames_low) 2151 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; 2152 if (coalesce->pkt_rate_high) 2153 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; 2154 if (coalesce->rx_coalesce_usecs_high) 2155 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; 2156 if (coalesce->rx_max_coalesced_frames_high) 2157 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; 2158 if (coalesce->tx_coalesce_usecs_high) 2159 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; 2160 if (coalesce->tx_max_coalesced_frames_high) 2161 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; 2162 if (coalesce->rate_sample_interval) 2163 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; 2164 2165 return (supported_params & nonzero_params) == nonzero_params; 2166 } 2167 2168 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, 2169 void __user *useraddr) 2170 { 2171 struct kernel_ethtool_coalesce kernel_coalesce = {}; 2172 struct ethtool_coalesce coalesce; 2173 int ret; 2174 2175 if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce) 2176 return -EOPNOTSUPP; 2177 2178 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 2179 NULL); 2180 if (ret) 2181 return ret; 2182 2183 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) 2184 return -EFAULT; 2185 2186 if (!ethtool_set_coalesce_supported(dev, &coalesce)) 2187 return -EOPNOTSUPP; 2188 2189 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, 2190 NULL); 2191 if (!ret) 2192 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF); 2193 return ret; 2194 } 2195 2196 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) 2197 { 2198 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; 2199 struct kernel_ethtool_ringparam kernel_ringparam = {}; 2200 2201 if (!dev->ethtool_ops->get_ringparam) 2202 return -EOPNOTSUPP; 2203 2204 dev->ethtool_ops->get_ringparam(dev, &ringparam, 2205 &kernel_ringparam, NULL); 2206 2207 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) 2208 return -EFAULT; 2209 return 0; 2210 } 2211 2212 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) 2213 { 2214 struct kernel_ethtool_ringparam kernel_ringparam; 2215 struct ethtool_ringparam ringparam, max; 2216 int ret; 2217 2218 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) 2219 return -EOPNOTSUPP; 2220 2221 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) 2222 return -EFAULT; 2223 2224 ethtool_ringparam_get_cfg(dev, &max, &kernel_ringparam, NULL); 2225 2226 /* ensure new ring parameters are within the maximums */ 2227 if (ringparam.rx_pending > max.rx_max_pending || 2228 ringparam.rx_mini_pending > max.rx_mini_max_pending || 2229 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || 2230 ringparam.tx_pending > max.tx_max_pending) 2231 return -EINVAL; 2232 2233 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, 2234 &kernel_ringparam, NULL); 2235 if (!ret) 2236 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF); 2237 return ret; 2238 } 2239 2240 static noinline_for_stack int ethtool_get_channels(struct net_device *dev, 2241 void __user *useraddr) 2242 { 2243 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; 2244 2245 if (!dev->ethtool_ops->get_channels) 2246 return -EOPNOTSUPP; 2247 2248 dev->ethtool_ops->get_channels(dev, &channels); 2249 2250 if (copy_to_user(useraddr, &channels, sizeof(channels))) 2251 return -EFAULT; 2252 return 0; 2253 } 2254 2255 static noinline_for_stack int ethtool_set_channels(struct net_device *dev, 2256 void __user *useraddr) 2257 { 2258 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; 2259 unsigned int i; 2260 int ret; 2261 2262 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) 2263 return -EOPNOTSUPP; 2264 2265 if (copy_from_user(&channels, useraddr, sizeof(channels))) 2266 return -EFAULT; 2267 2268 dev->ethtool_ops->get_channels(dev, &curr); 2269 2270 if (channels.rx_count == curr.rx_count && 2271 channels.tx_count == curr.tx_count && 2272 channels.combined_count == curr.combined_count && 2273 channels.other_count == curr.other_count) 2274 return 0; 2275 2276 /* ensure new counts are within the maximums */ 2277 if (channels.rx_count > curr.max_rx || 2278 channels.tx_count > curr.max_tx || 2279 channels.combined_count > curr.max_combined || 2280 channels.other_count > curr.max_other) 2281 return -EINVAL; 2282 2283 /* ensure there is at least one RX and one TX channel */ 2284 if (!channels.combined_count && 2285 (!channels.rx_count || !channels.tx_count)) 2286 return -EINVAL; 2287 2288 ret = ethtool_check_max_channel(dev, channels, NULL); 2289 if (ret) 2290 return ret; 2291 2292 /* Disabling channels, query busy queues (AF_XDP, queue leasing) */ 2293 for (i = channels.combined_count + channels.rx_count; 2294 i < curr.combined_count + curr.rx_count; i++) { 2295 if (netdev_queue_busy(dev, i, NETDEV_QUEUE_TYPE_RX, NULL)) 2296 return -EINVAL; 2297 } 2298 for (i = channels.combined_count + channels.tx_count; 2299 i < curr.combined_count + curr.tx_count; i++) { 2300 if (netdev_queue_busy(dev, i, NETDEV_QUEUE_TYPE_TX, NULL)) 2301 return -EINVAL; 2302 } 2303 2304 ret = dev->ethtool_ops->set_channels(dev, &channels); 2305 if (!ret) 2306 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF); 2307 return ret; 2308 } 2309 2310 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) 2311 { 2312 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; 2313 2314 if (!dev->ethtool_ops->get_pauseparam) 2315 return -EOPNOTSUPP; 2316 2317 dev->ethtool_ops->get_pauseparam(dev, &pauseparam); 2318 2319 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) 2320 return -EFAULT; 2321 return 0; 2322 } 2323 2324 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) 2325 { 2326 struct ethtool_pauseparam pauseparam; 2327 int ret; 2328 2329 if (!dev->ethtool_ops->set_pauseparam) 2330 return -EOPNOTSUPP; 2331 2332 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) 2333 return -EFAULT; 2334 2335 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); 2336 if (!ret) 2337 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF); 2338 return ret; 2339 } 2340 2341 static int ethtool_self_test(struct net_device *dev, char __user *useraddr) 2342 { 2343 struct ethtool_test test; 2344 const struct ethtool_ops *ops = dev->ethtool_ops; 2345 u64 *data; 2346 int ret, test_len; 2347 2348 if (!ops->self_test || !ops->get_sset_count) 2349 return -EOPNOTSUPP; 2350 2351 test_len = ops->get_sset_count(dev, ETH_SS_TEST); 2352 if (test_len < 0) 2353 return test_len; 2354 WARN_ON(test_len == 0); 2355 2356 if (copy_from_user(&test, useraddr, sizeof(test))) 2357 return -EFAULT; 2358 2359 test.len = test_len; 2360 data = kcalloc(test_len, sizeof(u64), GFP_USER); 2361 if (!data) 2362 return -ENOMEM; 2363 2364 netif_testing_on(dev); 2365 ops->self_test(dev, &test, data); 2366 netif_testing_off(dev); 2367 2368 ret = -EFAULT; 2369 if (copy_to_user(useraddr, &test, sizeof(test))) 2370 goto out; 2371 useraddr += sizeof(test); 2372 if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) 2373 goto out; 2374 ret = 0; 2375 2376 out: 2377 kfree(data); 2378 return ret; 2379 } 2380 2381 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) 2382 { 2383 struct ethtool_gstrings gstrings; 2384 u8 *data; 2385 int ret; 2386 2387 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) 2388 return -EFAULT; 2389 2390 ret = __ethtool_get_sset_count(dev, gstrings.string_set); 2391 if (ret < 0) 2392 return ret; 2393 if (ret > S32_MAX / ETH_GSTRING_LEN) 2394 return -ENOMEM; 2395 WARN_ON_ONCE(!ret); 2396 2397 if (gstrings.len && gstrings.len != ret) 2398 gstrings.len = 0; 2399 else 2400 gstrings.len = ret; 2401 2402 if (gstrings.len) { 2403 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); 2404 if (!data) 2405 return -ENOMEM; 2406 2407 __ethtool_get_strings(dev, gstrings.string_set, data); 2408 } else { 2409 data = NULL; 2410 } 2411 2412 ret = -EFAULT; 2413 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) 2414 goto out; 2415 useraddr += sizeof(gstrings); 2416 if (gstrings.len && 2417 copy_to_user(useraddr, data, 2418 array_size(gstrings.len, ETH_GSTRING_LEN))) 2419 goto out; 2420 ret = 0; 2421 2422 out: 2423 vfree(data); 2424 return ret; 2425 } 2426 2427 __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) 2428 { 2429 va_list args; 2430 2431 va_start(args, fmt); 2432 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); 2433 va_end(args); 2434 2435 *data += ETH_GSTRING_LEN; 2436 } 2437 EXPORT_SYMBOL(ethtool_sprintf); 2438 2439 void ethtool_puts(u8 **data, const char *str) 2440 { 2441 strscpy(*data, str, ETH_GSTRING_LEN); 2442 *data += ETH_GSTRING_LEN; 2443 } 2444 EXPORT_SYMBOL(ethtool_puts); 2445 2446 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr, 2447 bool has_rtnl_lock) 2448 { 2449 struct ethtool_value id; 2450 const struct ethtool_ops *ops = dev->ethtool_ops; 2451 netdevice_tracker dev_tracker; 2452 int rc; 2453 2454 if (!ops->set_phys_id) 2455 return -EOPNOTSUPP; 2456 2457 if (dev->ethtool->phys_id_busy) 2458 return -EBUSY; 2459 2460 if (copy_from_user(&id, useraddr, sizeof(id))) 2461 return -EFAULT; 2462 2463 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); 2464 if (rc < 0) 2465 return rc; 2466 2467 /* Drop the locks while waiting, but prevent reentry or 2468 * removal of the device. 2469 */ 2470 dev->ethtool->phys_id_busy = true; 2471 netdev_hold(dev, &dev_tracker, GFP_KERNEL); 2472 netdev_unlock_ops(dev); 2473 if (has_rtnl_lock) 2474 rtnl_unlock(); 2475 2476 if (rc == 0) { 2477 /* Driver will handle this itself */ 2478 schedule_timeout_interruptible( 2479 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); 2480 } else { 2481 /* Driver expects to be called at twice the frequency in rc */ 2482 int n = rc * 2, interval = HZ / n; 2483 u64 count = mul_u32_u32(n, id.data); 2484 u64 i = 0; 2485 2486 do { 2487 if (has_rtnl_lock) 2488 rtnl_lock(); 2489 netdev_lock_ops(dev); 2490 rc = ops->set_phys_id(dev, 2491 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); 2492 netdev_unlock_ops(dev); 2493 if (has_rtnl_lock) 2494 rtnl_unlock(); 2495 if (rc) 2496 break; 2497 schedule_timeout_interruptible(interval); 2498 } while (!signal_pending(current) && (!id.data || i < count)); 2499 } 2500 2501 if (has_rtnl_lock) 2502 rtnl_lock(); 2503 netdev_lock_ops(dev); 2504 netdev_put(dev, &dev_tracker); 2505 dev->ethtool->phys_id_busy = false; 2506 2507 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); 2508 return rc; 2509 } 2510 2511 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) 2512 { 2513 struct ethtool_stats stats; 2514 const struct ethtool_ops *ops = dev->ethtool_ops; 2515 u64 *data; 2516 int ret, n_stats; 2517 2518 if (!ops->get_ethtool_stats || !ops->get_sset_count) 2519 return -EOPNOTSUPP; 2520 2521 n_stats = ops->get_sset_count(dev, ETH_SS_STATS); 2522 if (n_stats < 0) 2523 return n_stats; 2524 if (n_stats > S32_MAX / sizeof(u64)) 2525 return -ENOMEM; 2526 WARN_ON_ONCE(!n_stats); 2527 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2528 return -EFAULT; 2529 2530 if (stats.n_stats && stats.n_stats != n_stats) 2531 stats.n_stats = 0; 2532 else 2533 stats.n_stats = n_stats; 2534 2535 if (stats.n_stats) { 2536 data = vzalloc(array_size(stats.n_stats, sizeof(u64))); 2537 if (!data) 2538 return -ENOMEM; 2539 ops->get_ethtool_stats(dev, &stats, data); 2540 } else { 2541 data = NULL; 2542 } 2543 2544 ret = -EFAULT; 2545 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2546 goto out; 2547 useraddr += sizeof(stats); 2548 if (stats.n_stats && 2549 copy_to_user(useraddr, data, 2550 array_size(stats.n_stats, sizeof(u64)))) 2551 goto out; 2552 ret = 0; 2553 2554 out: 2555 vfree(data); 2556 return ret; 2557 } 2558 2559 static int ethtool_vzalloc_stats_array(int n_stats, u64 **data) 2560 { 2561 if (n_stats < 0) 2562 return n_stats; 2563 if (n_stats > S32_MAX / sizeof(u64)) 2564 return -ENOMEM; 2565 if (WARN_ON_ONCE(!n_stats)) 2566 return -EOPNOTSUPP; 2567 2568 *data = vzalloc(array_size(n_stats, sizeof(u64))); 2569 if (!*data) 2570 return -ENOMEM; 2571 2572 return 0; 2573 } 2574 2575 static int ethtool_get_phy_stats_phydev(struct phy_device *phydev, 2576 struct ethtool_stats *stats, 2577 u64 **data) 2578 { 2579 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 2580 int n_stats, ret; 2581 2582 if (!phy_ops || !phy_ops->get_sset_count || !phy_ops->get_stats) 2583 return -EOPNOTSUPP; 2584 2585 n_stats = phy_ops->get_sset_count(phydev); 2586 if (stats->n_stats && stats->n_stats != n_stats) { 2587 stats->n_stats = 0; 2588 return 0; 2589 } 2590 2591 ret = ethtool_vzalloc_stats_array(n_stats, data); 2592 if (ret) 2593 return ret; 2594 2595 stats->n_stats = n_stats; 2596 return phy_ops->get_stats(phydev, stats, *data); 2597 } 2598 2599 static int ethtool_get_phy_stats_ethtool(struct net_device *dev, 2600 struct ethtool_stats *stats, 2601 u64 **data) 2602 { 2603 const struct ethtool_ops *ops = dev->ethtool_ops; 2604 int n_stats, ret; 2605 2606 if (!ops || !ops->get_sset_count || !ops->get_ethtool_phy_stats) 2607 return -EOPNOTSUPP; 2608 2609 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); 2610 if (stats->n_stats && stats->n_stats != n_stats) { 2611 stats->n_stats = 0; 2612 return 0; 2613 } 2614 2615 ret = ethtool_vzalloc_stats_array(n_stats, data); 2616 if (ret) 2617 return ret; 2618 2619 stats->n_stats = n_stats; 2620 ops->get_ethtool_phy_stats(dev, stats, *data); 2621 2622 return 0; 2623 } 2624 2625 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) 2626 { 2627 struct phy_device *phydev = dev->phydev; 2628 struct ethtool_stats stats; 2629 u64 *data = NULL; 2630 int ret = -EOPNOTSUPP; 2631 2632 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2633 return -EFAULT; 2634 2635 if (phydev) 2636 ret = ethtool_get_phy_stats_phydev(phydev, &stats, &data); 2637 2638 if (ret == -EOPNOTSUPP) 2639 ret = ethtool_get_phy_stats_ethtool(dev, &stats, &data); 2640 2641 if (ret) 2642 goto out; 2643 2644 if (copy_to_user(useraddr, &stats, sizeof(stats))) { 2645 ret = -EFAULT; 2646 goto out; 2647 } 2648 2649 useraddr += sizeof(stats); 2650 if (stats.n_stats && 2651 copy_to_user(useraddr, data, 2652 array_size(stats.n_stats, sizeof(u64)))) 2653 ret = -EFAULT; 2654 2655 out: 2656 vfree(data); 2657 return ret; 2658 } 2659 2660 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) 2661 { 2662 struct ethtool_perm_addr epaddr; 2663 2664 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) 2665 return -EFAULT; 2666 2667 if (epaddr.size < dev->addr_len) 2668 return -ETOOSMALL; 2669 epaddr.size = dev->addr_len; 2670 2671 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) 2672 return -EFAULT; 2673 useraddr += sizeof(epaddr); 2674 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) 2675 return -EFAULT; 2676 return 0; 2677 } 2678 2679 static int ethtool_get_value(struct net_device *dev, char __user *useraddr, 2680 u32 cmd, u32 (*actor)(struct net_device *)) 2681 { 2682 struct ethtool_value edata = { .cmd = cmd }; 2683 2684 if (!actor) 2685 return -EOPNOTSUPP; 2686 2687 edata.data = actor(dev); 2688 2689 if (copy_to_user(useraddr, &edata, sizeof(edata))) 2690 return -EFAULT; 2691 return 0; 2692 } 2693 2694 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, 2695 void (*actor)(struct net_device *, u32)) 2696 { 2697 struct ethtool_value edata; 2698 2699 if (!actor) 2700 return -EOPNOTSUPP; 2701 2702 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2703 return -EFAULT; 2704 2705 actor(dev, edata.data); 2706 return 0; 2707 } 2708 2709 static int ethtool_set_value(struct net_device *dev, char __user *useraddr, 2710 int (*actor)(struct net_device *, u32)) 2711 { 2712 struct ethtool_value edata; 2713 2714 if (!actor) 2715 return -EOPNOTSUPP; 2716 2717 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2718 return -EFAULT; 2719 2720 return actor(dev, edata.data); 2721 } 2722 2723 static int 2724 ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) 2725 { 2726 if (!dev->ethtool_ops->flash_device) { 2727 req->devlink = netdev_to_devlink_get(dev); 2728 return 0; 2729 } 2730 2731 return dev->ethtool_ops->flash_device(dev, &req->efl); 2732 } 2733 2734 static int ethtool_set_dump(struct net_device *dev, 2735 void __user *useraddr) 2736 { 2737 struct ethtool_dump dump; 2738 2739 if (!dev->ethtool_ops->set_dump) 2740 return -EOPNOTSUPP; 2741 2742 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2743 return -EFAULT; 2744 2745 return dev->ethtool_ops->set_dump(dev, &dump); 2746 } 2747 2748 static int ethtool_get_dump_flag(struct net_device *dev, 2749 void __user *useraddr) 2750 { 2751 int ret; 2752 struct ethtool_dump dump; 2753 const struct ethtool_ops *ops = dev->ethtool_ops; 2754 2755 if (!ops->get_dump_flag) 2756 return -EOPNOTSUPP; 2757 2758 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2759 return -EFAULT; 2760 2761 ret = ops->get_dump_flag(dev, &dump); 2762 if (ret) 2763 return ret; 2764 2765 if (copy_to_user(useraddr, &dump, sizeof(dump))) 2766 return -EFAULT; 2767 return 0; 2768 } 2769 2770 static int ethtool_get_dump_data(struct net_device *dev, 2771 void __user *useraddr) 2772 { 2773 int ret; 2774 __u32 len; 2775 struct ethtool_dump dump, tmp; 2776 const struct ethtool_ops *ops = dev->ethtool_ops; 2777 void *data = NULL; 2778 2779 if (!ops->get_dump_data || !ops->get_dump_flag) 2780 return -EOPNOTSUPP; 2781 2782 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2783 return -EFAULT; 2784 2785 memset(&tmp, 0, sizeof(tmp)); 2786 tmp.cmd = ETHTOOL_GET_DUMP_FLAG; 2787 ret = ops->get_dump_flag(dev, &tmp); 2788 if (ret) 2789 return ret; 2790 2791 len = min(tmp.len, dump.len); 2792 if (!len) 2793 return -EFAULT; 2794 2795 /* Don't ever let the driver think there's more space available 2796 * than it requested with .get_dump_flag(). 2797 */ 2798 dump.len = len; 2799 2800 /* Always allocate enough space to hold the whole thing so that the 2801 * driver does not need to check the length and bother with partial 2802 * dumping. 2803 */ 2804 data = vzalloc(tmp.len); 2805 if (!data) 2806 return -ENOMEM; 2807 ret = ops->get_dump_data(dev, &dump, data); 2808 if (ret) 2809 goto out; 2810 2811 /* There are two sane possibilities: 2812 * 1. The driver's .get_dump_data() does not touch dump.len. 2813 * 2. Or it may set dump.len to how much it really writes, which 2814 * should be tmp.len (or len if it can do a partial dump). 2815 * In any case respond to userspace with the actual length of data 2816 * it's receiving. 2817 */ 2818 WARN_ON(dump.len != len && dump.len != tmp.len); 2819 dump.len = len; 2820 2821 if (copy_to_user(useraddr, &dump, sizeof(dump))) { 2822 ret = -EFAULT; 2823 goto out; 2824 } 2825 useraddr += offsetof(struct ethtool_dump, data); 2826 if (copy_to_user(useraddr, data, len)) 2827 ret = -EFAULT; 2828 out: 2829 vfree(data); 2830 return ret; 2831 } 2832 2833 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) 2834 { 2835 struct kernel_ethtool_ts_info kernel_info; 2836 struct ethtool_ts_info info = {}; 2837 int err; 2838 2839 err = __ethtool_get_ts_info(dev, &kernel_info); 2840 if (err) 2841 return err; 2842 2843 info.cmd = kernel_info.cmd; 2844 info.so_timestamping = kernel_info.so_timestamping; 2845 info.phc_index = kernel_info.phc_index; 2846 info.tx_types = kernel_info.tx_types; 2847 info.rx_filters = kernel_info.rx_filters; 2848 2849 if (copy_to_user(useraddr, &info, sizeof(info))) 2850 return -EFAULT; 2851 2852 return 0; 2853 } 2854 2855 int ethtool_get_module_info_call(struct net_device *dev, 2856 struct ethtool_modinfo *modinfo) 2857 { 2858 const struct ethtool_ops *ops = dev->ethtool_ops; 2859 struct phy_device *phydev = dev->phydev; 2860 2861 if (dev->ethtool->module_fw_flash_in_progress) 2862 return -EBUSY; 2863 2864 if (dev->sfp_bus) 2865 return sfp_get_module_info(dev->sfp_bus, modinfo); 2866 2867 if (phydev && phydev->drv && phydev->drv->module_info) 2868 return phydev->drv->module_info(phydev, modinfo); 2869 2870 if (ops->get_module_info) 2871 return ops->get_module_info(dev, modinfo); 2872 2873 return -EOPNOTSUPP; 2874 } 2875 2876 static int ethtool_get_module_info(struct net_device *dev, 2877 void __user *useraddr) 2878 { 2879 int ret; 2880 struct ethtool_modinfo modinfo; 2881 2882 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) 2883 return -EFAULT; 2884 2885 ret = ethtool_get_module_info_call(dev, &modinfo); 2886 if (ret) 2887 return ret; 2888 2889 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) 2890 return -EFAULT; 2891 2892 return 0; 2893 } 2894 2895 int ethtool_get_module_eeprom_call(struct net_device *dev, 2896 struct ethtool_eeprom *ee, u8 *data) 2897 { 2898 const struct ethtool_ops *ops = dev->ethtool_ops; 2899 struct phy_device *phydev = dev->phydev; 2900 2901 if (dev->ethtool->module_fw_flash_in_progress) 2902 return -EBUSY; 2903 2904 if (dev->sfp_bus) 2905 return sfp_get_module_eeprom(dev->sfp_bus, ee, data); 2906 2907 if (phydev && phydev->drv && phydev->drv->module_eeprom) 2908 return phydev->drv->module_eeprom(phydev, ee, data); 2909 2910 if (ops->get_module_eeprom) 2911 return ops->get_module_eeprom(dev, ee, data); 2912 2913 return -EOPNOTSUPP; 2914 } 2915 2916 static int ethtool_get_module_eeprom(struct net_device *dev, 2917 void __user *useraddr) 2918 { 2919 int ret; 2920 struct ethtool_modinfo modinfo; 2921 2922 ret = ethtool_get_module_info_call(dev, &modinfo); 2923 if (ret) 2924 return ret; 2925 2926 return ethtool_get_any_eeprom(dev, useraddr, 2927 ethtool_get_module_eeprom_call, 2928 modinfo.eeprom_len); 2929 } 2930 2931 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) 2932 { 2933 switch (tuna->id) { 2934 case ETHTOOL_RX_COPYBREAK: 2935 case ETHTOOL_TX_COPYBREAK: 2936 case ETHTOOL_TX_COPYBREAK_BUF_SIZE: 2937 if (tuna->len != sizeof(u32) || 2938 tuna->type_id != ETHTOOL_TUNABLE_U32) 2939 return -EINVAL; 2940 break; 2941 case ETHTOOL_PFC_PREVENTION_TOUT: 2942 if (tuna->len != sizeof(u16) || 2943 tuna->type_id != ETHTOOL_TUNABLE_U16) 2944 return -EINVAL; 2945 break; 2946 default: 2947 return -EINVAL; 2948 } 2949 2950 return 0; 2951 } 2952 2953 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) 2954 { 2955 int ret; 2956 struct ethtool_tunable tuna; 2957 const struct ethtool_ops *ops = dev->ethtool_ops; 2958 void *data; 2959 2960 if (!ops->get_tunable) 2961 return -EOPNOTSUPP; 2962 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2963 return -EFAULT; 2964 ret = ethtool_tunable_valid(&tuna); 2965 if (ret) 2966 return ret; 2967 data = kzalloc(tuna.len, GFP_USER); 2968 if (!data) 2969 return -ENOMEM; 2970 ret = ops->get_tunable(dev, &tuna, data); 2971 if (ret) 2972 goto out; 2973 useraddr += sizeof(tuna); 2974 ret = -EFAULT; 2975 if (copy_to_user(useraddr, data, tuna.len)) 2976 goto out; 2977 ret = 0; 2978 2979 out: 2980 kfree(data); 2981 return ret; 2982 } 2983 2984 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) 2985 { 2986 int ret; 2987 struct ethtool_tunable tuna; 2988 const struct ethtool_ops *ops = dev->ethtool_ops; 2989 void *data; 2990 2991 if (!ops->set_tunable) 2992 return -EOPNOTSUPP; 2993 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2994 return -EFAULT; 2995 ret = ethtool_tunable_valid(&tuna); 2996 if (ret) 2997 return ret; 2998 useraddr += sizeof(tuna); 2999 data = memdup_user(useraddr, tuna.len); 3000 if (IS_ERR(data)) 3001 return PTR_ERR(data); 3002 ret = ops->set_tunable(dev, &tuna, data); 3003 3004 kfree(data); 3005 return ret; 3006 } 3007 3008 static noinline_for_stack int 3009 ethtool_get_per_queue_coalesce(struct net_device *dev, 3010 void __user *useraddr, 3011 struct ethtool_per_queue_op *per_queue_opt) 3012 { 3013 u32 bit; 3014 int ret; 3015 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 3016 3017 if (!dev->ethtool_ops->get_per_queue_coalesce) 3018 return -EOPNOTSUPP; 3019 3020 useraddr += sizeof(*per_queue_opt); 3021 3022 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, 3023 MAX_NUM_QUEUE); 3024 3025 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 3026 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 3027 3028 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); 3029 if (ret != 0) 3030 return ret; 3031 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 3032 return -EFAULT; 3033 useraddr += sizeof(coalesce); 3034 } 3035 3036 return 0; 3037 } 3038 3039 static noinline_for_stack int 3040 ethtool_set_per_queue_coalesce(struct net_device *dev, 3041 void __user *useraddr, 3042 struct ethtool_per_queue_op *per_queue_opt) 3043 { 3044 u32 bit; 3045 int i, ret = 0; 3046 int n_queue; 3047 struct ethtool_coalesce *backup = NULL, *tmp = NULL; 3048 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 3049 3050 if ((!dev->ethtool_ops->set_per_queue_coalesce) || 3051 (!dev->ethtool_ops->get_per_queue_coalesce)) 3052 return -EOPNOTSUPP; 3053 3054 useraddr += sizeof(*per_queue_opt); 3055 3056 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); 3057 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); 3058 tmp = backup = kmalloc_objs(*backup, n_queue); 3059 if (!backup) 3060 return -ENOMEM; 3061 3062 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 3063 struct ethtool_coalesce coalesce; 3064 3065 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); 3066 if (ret != 0) 3067 goto roll_back; 3068 3069 tmp++; 3070 3071 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { 3072 ret = -EFAULT; 3073 goto roll_back; 3074 } 3075 3076 if (!ethtool_set_coalesce_supported(dev, &coalesce)) { 3077 ret = -EOPNOTSUPP; 3078 goto roll_back; 3079 } 3080 3081 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); 3082 if (ret != 0) 3083 goto roll_back; 3084 3085 useraddr += sizeof(coalesce); 3086 } 3087 3088 roll_back: 3089 if (ret != 0) { 3090 tmp = backup; 3091 for_each_set_bit(i, queue_mask, bit) { 3092 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); 3093 tmp++; 3094 } 3095 } 3096 kfree(backup); 3097 3098 return ret; 3099 } 3100 3101 static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, 3102 void __user *useraddr, u32 sub_cmd) 3103 { 3104 struct ethtool_per_queue_op per_queue_opt; 3105 3106 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) 3107 return -EFAULT; 3108 3109 if (per_queue_opt.sub_command != sub_cmd) 3110 return -EINVAL; 3111 3112 switch (per_queue_opt.sub_command) { 3113 case ETHTOOL_GCOALESCE: 3114 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); 3115 case ETHTOOL_SCOALESCE: 3116 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); 3117 default: 3118 return -EOPNOTSUPP; 3119 } 3120 } 3121 3122 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) 3123 { 3124 switch (tuna->id) { 3125 case ETHTOOL_PHY_DOWNSHIFT: 3126 case ETHTOOL_PHY_FAST_LINK_DOWN: 3127 case ETHTOOL_PHY_SHORT_CABLE_PRESET: 3128 if (tuna->len != sizeof(u8) || 3129 tuna->type_id != ETHTOOL_TUNABLE_U8) 3130 return -EINVAL; 3131 break; 3132 case ETHTOOL_PHY_EDPD: 3133 if (tuna->len != sizeof(u16) || 3134 tuna->type_id != ETHTOOL_TUNABLE_U16) 3135 return -EINVAL; 3136 break; 3137 case ETHTOOL_PHY_LPF_BW: 3138 case ETHTOOL_PHY_DSP_EQ_INIT_VALUE: 3139 if (tuna->len != sizeof(u32) || 3140 tuna->type_id != ETHTOOL_TUNABLE_U32) 3141 return -EINVAL; 3142 break; 3143 default: 3144 return -EINVAL; 3145 } 3146 3147 return 0; 3148 } 3149 3150 static int get_phy_tunable(struct net_device *dev, void __user *useraddr) 3151 { 3152 struct phy_device *phydev = dev->phydev; 3153 struct ethtool_tunable tuna; 3154 bool phy_drv_tunable; 3155 void *data; 3156 int ret; 3157 3158 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 3159 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) 3160 return -EOPNOTSUPP; 3161 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 3162 return -EFAULT; 3163 ret = ethtool_phy_tunable_valid(&tuna); 3164 if (ret) 3165 return ret; 3166 data = kzalloc(tuna.len, GFP_USER); 3167 if (!data) 3168 return -ENOMEM; 3169 if (phy_drv_tunable) { 3170 mutex_lock(&phydev->lock); 3171 ret = phydev->drv->get_tunable(phydev, &tuna, data); 3172 mutex_unlock(&phydev->lock); 3173 } else { 3174 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); 3175 } 3176 if (ret) 3177 goto out; 3178 useraddr += sizeof(tuna); 3179 ret = -EFAULT; 3180 if (copy_to_user(useraddr, data, tuna.len)) 3181 goto out; 3182 ret = 0; 3183 3184 out: 3185 kfree(data); 3186 return ret; 3187 } 3188 3189 static int set_phy_tunable(struct net_device *dev, void __user *useraddr) 3190 { 3191 struct phy_device *phydev = dev->phydev; 3192 struct ethtool_tunable tuna; 3193 bool phy_drv_tunable; 3194 void *data; 3195 int ret; 3196 3197 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 3198 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) 3199 return -EOPNOTSUPP; 3200 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 3201 return -EFAULT; 3202 ret = ethtool_phy_tunable_valid(&tuna); 3203 if (ret) 3204 return ret; 3205 useraddr += sizeof(tuna); 3206 data = memdup_user(useraddr, tuna.len); 3207 if (IS_ERR(data)) 3208 return PTR_ERR(data); 3209 if (phy_drv_tunable) { 3210 mutex_lock(&phydev->lock); 3211 ret = phydev->drv->set_tunable(phydev, &tuna, data); 3212 mutex_unlock(&phydev->lock); 3213 } else { 3214 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); 3215 } 3216 3217 kfree(data); 3218 return ret; 3219 } 3220 3221 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) 3222 { 3223 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; 3224 int rc; 3225 3226 if (!dev->ethtool_ops->get_fecparam) 3227 return -EOPNOTSUPP; 3228 3229 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); 3230 if (rc) 3231 return rc; 3232 3233 if (WARN_ON_ONCE(fecparam.reserved)) 3234 fecparam.reserved = 0; 3235 3236 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) 3237 return -EFAULT; 3238 return 0; 3239 } 3240 3241 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) 3242 { 3243 struct ethtool_fecparam fecparam; 3244 3245 if (!dev->ethtool_ops->set_fecparam) 3246 return -EOPNOTSUPP; 3247 3248 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) 3249 return -EFAULT; 3250 3251 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) 3252 return -EINVAL; 3253 3254 fecparam.active_fec = 0; 3255 fecparam.reserved = 0; 3256 3257 return dev->ethtool_ops->set_fecparam(dev, &fecparam); 3258 } 3259 3260 /* The main entry point in this file. Called from net/core/dev_ioctl.c */ 3261 3262 static int 3263 dev_ethtool_locked(struct net *net, struct net_device *dev, 3264 void __user *useraddr, 3265 u32 ethcmd, struct ethtool_devlink_compat *devlink_state, 3266 bool has_rtnl_lock) 3267 { 3268 u32 sub_cmd; 3269 int rc; 3270 netdev_features_t old_features; 3271 3272 if (ethcmd == ETHTOOL_PERQUEUE) { 3273 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) 3274 return -EFAULT; 3275 } else { 3276 sub_cmd = ethcmd; 3277 } 3278 /* Allow some commands to be done by anyone */ 3279 switch (sub_cmd) { 3280 case ETHTOOL_GSET: 3281 case ETHTOOL_GDRVINFO: 3282 case ETHTOOL_GMSGLVL: 3283 case ETHTOOL_GLINK: 3284 case ETHTOOL_GCOALESCE: 3285 case ETHTOOL_GRINGPARAM: 3286 case ETHTOOL_GPAUSEPARAM: 3287 case ETHTOOL_GRXCSUM: 3288 case ETHTOOL_GTXCSUM: 3289 case ETHTOOL_GSG: 3290 case ETHTOOL_GSSET_INFO: 3291 case ETHTOOL_GSTRINGS: 3292 case ETHTOOL_GSTATS: 3293 case ETHTOOL_GPHYSTATS: 3294 case ETHTOOL_GTSO: 3295 case ETHTOOL_GPERMADDR: 3296 case ETHTOOL_GUFO: 3297 case ETHTOOL_GGSO: 3298 case ETHTOOL_GGRO: 3299 case ETHTOOL_GFLAGS: 3300 case ETHTOOL_GPFLAGS: 3301 case ETHTOOL_GRXFH: 3302 case ETHTOOL_GRXRINGS: 3303 case ETHTOOL_GRXCLSRLCNT: 3304 case ETHTOOL_GRXCLSRULE: 3305 case ETHTOOL_GRXCLSRLALL: 3306 case ETHTOOL_GRXFHINDIR: 3307 case ETHTOOL_GRSSH: 3308 case ETHTOOL_GFEATURES: 3309 case ETHTOOL_GCHANNELS: 3310 case ETHTOOL_GET_TS_INFO: 3311 case ETHTOOL_GEEE: 3312 case ETHTOOL_GTUNABLE: 3313 case ETHTOOL_PHY_GTUNABLE: 3314 case ETHTOOL_GLINKSETTINGS: 3315 case ETHTOOL_GFECPARAM: 3316 break; 3317 default: 3318 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 3319 return -EPERM; 3320 } 3321 3322 netdev_assert_locked_ops_compat(dev); 3323 3324 if (dev->dev.parent) 3325 pm_runtime_get_sync(dev->dev.parent); 3326 3327 if (!netif_device_present(dev)) { 3328 rc = -ENODEV; 3329 goto out; 3330 } 3331 3332 if (dev->ethtool_ops->begin) { 3333 rc = dev->ethtool_ops->begin(dev); 3334 if (rc < 0) 3335 goto out; 3336 } 3337 old_features = dev->features; 3338 3339 switch (ethcmd) { 3340 case ETHTOOL_GSET: 3341 rc = ethtool_get_settings(dev, useraddr); 3342 break; 3343 case ETHTOOL_SSET: 3344 rc = ethtool_set_settings(dev, useraddr); 3345 break; 3346 case ETHTOOL_GDRVINFO: 3347 rc = ethtool_get_drvinfo(dev, devlink_state); 3348 break; 3349 case ETHTOOL_GREGS: 3350 rc = ethtool_get_regs(dev, useraddr); 3351 break; 3352 case ETHTOOL_GWOL: 3353 rc = ethtool_get_wol(dev, useraddr); 3354 break; 3355 case ETHTOOL_SWOL: 3356 rc = ethtool_set_wol(dev, useraddr); 3357 break; 3358 case ETHTOOL_GMSGLVL: 3359 rc = ethtool_get_value(dev, useraddr, ethcmd, 3360 dev->ethtool_ops->get_msglevel); 3361 break; 3362 case ETHTOOL_SMSGLVL: 3363 rc = ethtool_set_value_void(dev, useraddr, 3364 dev->ethtool_ops->set_msglevel); 3365 if (!rc) 3366 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF); 3367 break; 3368 case ETHTOOL_GEEE: 3369 rc = ethtool_get_eee(dev, useraddr); 3370 break; 3371 case ETHTOOL_SEEE: 3372 rc = ethtool_set_eee(dev, useraddr); 3373 break; 3374 case ETHTOOL_NWAY_RST: 3375 rc = ethtool_nway_reset(dev); 3376 break; 3377 case ETHTOOL_GLINK: 3378 rc = ethtool_get_link(dev, useraddr); 3379 break; 3380 case ETHTOOL_GEEPROM: 3381 rc = ethtool_get_eeprom(dev, useraddr); 3382 break; 3383 case ETHTOOL_SEEPROM: 3384 rc = ethtool_set_eeprom(dev, useraddr); 3385 break; 3386 case ETHTOOL_GCOALESCE: 3387 rc = ethtool_get_coalesce(dev, useraddr); 3388 break; 3389 case ETHTOOL_SCOALESCE: 3390 rc = ethtool_set_coalesce(dev, useraddr); 3391 break; 3392 case ETHTOOL_GRINGPARAM: 3393 rc = ethtool_get_ringparam(dev, useraddr); 3394 break; 3395 case ETHTOOL_SRINGPARAM: 3396 rc = ethtool_set_ringparam(dev, useraddr); 3397 break; 3398 case ETHTOOL_GPAUSEPARAM: 3399 rc = ethtool_get_pauseparam(dev, useraddr); 3400 break; 3401 case ETHTOOL_SPAUSEPARAM: 3402 rc = ethtool_set_pauseparam(dev, useraddr); 3403 break; 3404 case ETHTOOL_TEST: 3405 rc = ethtool_self_test(dev, useraddr); 3406 break; 3407 case ETHTOOL_GSTRINGS: 3408 rc = ethtool_get_strings(dev, useraddr); 3409 break; 3410 case ETHTOOL_PHYS_ID: 3411 rc = ethtool_phys_id(dev, useraddr, has_rtnl_lock); 3412 break; 3413 case ETHTOOL_GSTATS: 3414 rc = ethtool_get_stats(dev, useraddr); 3415 break; 3416 case ETHTOOL_GPERMADDR: 3417 rc = ethtool_get_perm_addr(dev, useraddr); 3418 break; 3419 case ETHTOOL_GFLAGS: 3420 rc = ethtool_get_value(dev, useraddr, ethcmd, 3421 __ethtool_get_flags); 3422 break; 3423 case ETHTOOL_SFLAGS: 3424 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); 3425 break; 3426 case ETHTOOL_GPFLAGS: 3427 rc = ethtool_get_value(dev, useraddr, ethcmd, 3428 dev->ethtool_ops->get_priv_flags); 3429 if (!rc) 3430 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF); 3431 break; 3432 case ETHTOOL_SPFLAGS: 3433 rc = ethtool_set_value(dev, useraddr, 3434 dev->ethtool_ops->set_priv_flags); 3435 break; 3436 case ETHTOOL_GRXFH: 3437 rc = ethtool_get_rxfh_fields(dev, ethcmd, useraddr); 3438 break; 3439 case ETHTOOL_SRXFH: 3440 rc = ethtool_set_rxfh_fields(dev, ethcmd, useraddr); 3441 break; 3442 case ETHTOOL_GRXRINGS: 3443 rc = ethtool_get_rxrings(dev, ethcmd, useraddr); 3444 break; 3445 case ETHTOOL_GRXCLSRLCNT: 3446 case ETHTOOL_GRXCLSRULE: 3447 case ETHTOOL_GRXCLSRLALL: 3448 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); 3449 break; 3450 case ETHTOOL_SRXCLSRLDEL: 3451 case ETHTOOL_SRXCLSRLINS: 3452 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); 3453 break; 3454 case ETHTOOL_FLASHDEV: 3455 rc = ethtool_flash_device(dev, devlink_state); 3456 break; 3457 case ETHTOOL_RESET: 3458 rc = ethtool_reset(dev, useraddr); 3459 break; 3460 case ETHTOOL_GSSET_INFO: 3461 rc = ethtool_get_sset_info(dev, useraddr); 3462 break; 3463 case ETHTOOL_GRXFHINDIR: 3464 rc = ethtool_get_rxfh_indir(dev, useraddr); 3465 break; 3466 case ETHTOOL_SRXFHINDIR: 3467 rc = ethtool_set_rxfh_indir(dev, useraddr); 3468 break; 3469 case ETHTOOL_GRSSH: 3470 rc = ethtool_get_rxfh(dev, useraddr); 3471 break; 3472 case ETHTOOL_SRSSH: 3473 rc = ethtool_set_rxfh(dev, useraddr); 3474 break; 3475 case ETHTOOL_GFEATURES: 3476 rc = ethtool_get_features(dev, useraddr); 3477 break; 3478 case ETHTOOL_SFEATURES: 3479 rc = ethtool_set_features(dev, useraddr); 3480 break; 3481 case ETHTOOL_GTXCSUM: 3482 case ETHTOOL_GRXCSUM: 3483 case ETHTOOL_GSG: 3484 case ETHTOOL_GTSO: 3485 case ETHTOOL_GGSO: 3486 case ETHTOOL_GGRO: 3487 rc = ethtool_get_one_feature(dev, useraddr, ethcmd); 3488 break; 3489 case ETHTOOL_STXCSUM: 3490 case ETHTOOL_SRXCSUM: 3491 case ETHTOOL_SSG: 3492 case ETHTOOL_STSO: 3493 case ETHTOOL_SGSO: 3494 case ETHTOOL_SGRO: 3495 rc = ethtool_set_one_feature(dev, useraddr, ethcmd); 3496 break; 3497 case ETHTOOL_GCHANNELS: 3498 rc = ethtool_get_channels(dev, useraddr); 3499 break; 3500 case ETHTOOL_SCHANNELS: 3501 rc = ethtool_set_channels(dev, useraddr); 3502 break; 3503 case ETHTOOL_SET_DUMP: 3504 rc = ethtool_set_dump(dev, useraddr); 3505 break; 3506 case ETHTOOL_GET_DUMP_FLAG: 3507 rc = ethtool_get_dump_flag(dev, useraddr); 3508 break; 3509 case ETHTOOL_GET_DUMP_DATA: 3510 rc = ethtool_get_dump_data(dev, useraddr); 3511 break; 3512 case ETHTOOL_GET_TS_INFO: 3513 rc = ethtool_get_ts_info(dev, useraddr); 3514 break; 3515 case ETHTOOL_GMODULEINFO: 3516 rc = ethtool_get_module_info(dev, useraddr); 3517 break; 3518 case ETHTOOL_GMODULEEEPROM: 3519 rc = ethtool_get_module_eeprom(dev, useraddr); 3520 break; 3521 case ETHTOOL_GTUNABLE: 3522 rc = ethtool_get_tunable(dev, useraddr); 3523 break; 3524 case ETHTOOL_STUNABLE: 3525 rc = ethtool_set_tunable(dev, useraddr); 3526 break; 3527 case ETHTOOL_GPHYSTATS: 3528 rc = ethtool_get_phy_stats(dev, useraddr); 3529 break; 3530 case ETHTOOL_PERQUEUE: 3531 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); 3532 break; 3533 case ETHTOOL_GLINKSETTINGS: 3534 rc = ethtool_get_link_ksettings(dev, useraddr); 3535 break; 3536 case ETHTOOL_SLINKSETTINGS: 3537 rc = ethtool_set_link_ksettings(dev, useraddr); 3538 break; 3539 case ETHTOOL_PHY_GTUNABLE: 3540 rc = get_phy_tunable(dev, useraddr); 3541 break; 3542 case ETHTOOL_PHY_STUNABLE: 3543 rc = set_phy_tunable(dev, useraddr); 3544 break; 3545 case ETHTOOL_GFECPARAM: 3546 rc = ethtool_get_fecparam(dev, useraddr); 3547 break; 3548 case ETHTOOL_SFECPARAM: 3549 rc = ethtool_set_fecparam(dev, useraddr); 3550 break; 3551 default: 3552 rc = -EOPNOTSUPP; 3553 } 3554 3555 if (dev->ethtool_ops->complete) 3556 dev->ethtool_ops->complete(dev); 3557 3558 switch (ethcmd) { 3559 case ETHTOOL_PHYS_ID: 3560 /* Don't check features if operation drops the locks. 3561 * Someone else may have changed features in parallel. 3562 */ 3563 break; 3564 default: 3565 if (old_features != dev->features) { 3566 if (has_rtnl_lock) 3567 netdev_features_change(dev); 3568 else 3569 netdev_WARN(dev, "ethtool cmd %u changed features without rtnl_lock", ethcmd); 3570 } 3571 } 3572 out: 3573 if (dev->dev.parent) 3574 pm_runtime_put(dev->dev.parent); 3575 3576 return rc; 3577 } 3578 3579 /* Commands that may toggle dev->features in net/ethtool/ioctl.c and so 3580 * call into __netdev_update_features(), which still requires rtnl_lock. 3581 * Driver-decided SET commands that may chain into rtnl-only helpers are 3582 * covered by ethtool_ioctl_needs_rtnl()/ETHTOOL_OP_NEEDS_RTNL_*. 3583 */ 3584 static bool ethtool_cmd_changes_features(u32 ethcmd) 3585 { 3586 switch (ethcmd) { 3587 case ETHTOOL_SFEATURES: 3588 case ETHTOOL_SFLAGS: 3589 case ETHTOOL_STXCSUM: 3590 case ETHTOOL_SRXCSUM: 3591 case ETHTOOL_SSG: 3592 case ETHTOOL_STSO: 3593 case ETHTOOL_SGSO: 3594 case ETHTOOL_SGRO: 3595 return true; 3596 } 3597 return false; 3598 } 3599 3600 static int 3601 __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, 3602 u32 ethcmd, struct ethtool_devlink_compat *devlink_state) 3603 { 3604 netdevice_tracker dev_tracker; 3605 struct net_device *dev; 3606 bool need_rtnl; 3607 int rc; 3608 3609 dev = netdev_get_by_name(net, ifr->ifr_name, &dev_tracker, GFP_KERNEL); 3610 if (!dev) 3611 return -ENODEV; 3612 3613 need_rtnl = !netdev_need_ops_lock(dev) || 3614 ethtool_cmd_changes_features(ethcmd) || 3615 ethtool_ioctl_needs_rtnl(dev, ethcmd); 3616 if (need_rtnl) 3617 rtnl_lock(); 3618 netdev_lock_ops(dev); 3619 if (dev->reg_state > NETREG_REGISTERED || 3620 dev->moving_ns || !net_eq(dev_net(dev), net)) { 3621 rc = -ENODEV; 3622 goto exit_ops_unlock; 3623 } 3624 3625 rc = dev_ethtool_locked(net, dev, useraddr, ethcmd, devlink_state, 3626 need_rtnl); 3627 3628 exit_ops_unlock: 3629 netdev_unlock_ops(dev); 3630 if (need_rtnl) 3631 rtnl_unlock(); 3632 netdev_put(dev, &dev_tracker); 3633 3634 return rc; 3635 } 3636 3637 int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) 3638 { 3639 struct ethtool_devlink_compat *state; 3640 u32 ethcmd; 3641 int rc; 3642 3643 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) 3644 return -EFAULT; 3645 3646 state = kzalloc_obj(*state); 3647 if (!state) 3648 return -ENOMEM; 3649 3650 switch (ethcmd) { 3651 case ETHTOOL_FLASHDEV: 3652 if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { 3653 rc = -EFAULT; 3654 goto exit_free; 3655 } 3656 state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; 3657 break; 3658 } 3659 3660 rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); 3661 if (rc) 3662 goto exit_free; 3663 3664 switch (ethcmd) { 3665 case ETHTOOL_FLASHDEV: 3666 if (state->devlink) 3667 rc = devlink_compat_flash_update(state->devlink, 3668 state->efl.data); 3669 break; 3670 case ETHTOOL_GDRVINFO: 3671 if (state->devlink) 3672 devlink_compat_running_version(state->devlink, 3673 state->info.fw_version, 3674 sizeof(state->info.fw_version)); 3675 if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { 3676 rc = -EFAULT; 3677 goto exit_free; 3678 } 3679 break; 3680 } 3681 3682 exit_free: 3683 if (state->devlink) 3684 devlink_put(state->devlink); 3685 kfree(state); 3686 return rc; 3687 } 3688 3689 struct ethtool_rx_flow_key { 3690 struct flow_dissector_key_basic basic; 3691 union { 3692 struct flow_dissector_key_ipv4_addrs ipv4; 3693 struct flow_dissector_key_ipv6_addrs ipv6; 3694 }; 3695 struct flow_dissector_key_ports tp; 3696 struct flow_dissector_key_ip ip; 3697 struct flow_dissector_key_vlan vlan; 3698 struct flow_dissector_key_eth_addrs eth_addrs; 3699 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ 3700 3701 struct ethtool_rx_flow_match { 3702 struct flow_dissector dissector; 3703 struct ethtool_rx_flow_key key; 3704 struct ethtool_rx_flow_key mask; 3705 }; 3706 3707 struct ethtool_rx_flow_rule * 3708 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) 3709 { 3710 const struct ethtool_rx_flow_spec *fs = input->fs; 3711 struct ethtool_rx_flow_match *match; 3712 struct ethtool_rx_flow_rule *flow; 3713 struct flow_action_entry *act; 3714 3715 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + 3716 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); 3717 if (!flow) 3718 return ERR_PTR(-ENOMEM); 3719 3720 /* ethtool_rx supports only one single action per rule. */ 3721 flow->rule = flow_rule_alloc(1); 3722 if (!flow->rule) { 3723 kfree(flow); 3724 return ERR_PTR(-ENOMEM); 3725 } 3726 3727 match = (struct ethtool_rx_flow_match *)flow->priv; 3728 flow->rule->match.dissector = &match->dissector; 3729 flow->rule->match.mask = &match->mask; 3730 flow->rule->match.key = &match->key; 3731 3732 match->mask.basic.n_proto = htons(0xffff); 3733 3734 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3735 case ETHER_FLOW: { 3736 const struct ethhdr *ether_spec, *ether_m_spec; 3737 3738 ether_spec = &fs->h_u.ether_spec; 3739 ether_m_spec = &fs->m_u.ether_spec; 3740 3741 if (!is_zero_ether_addr(ether_m_spec->h_source)) { 3742 ether_addr_copy(match->key.eth_addrs.src, 3743 ether_spec->h_source); 3744 ether_addr_copy(match->mask.eth_addrs.src, 3745 ether_m_spec->h_source); 3746 } 3747 if (!is_zero_ether_addr(ether_m_spec->h_dest)) { 3748 ether_addr_copy(match->key.eth_addrs.dst, 3749 ether_spec->h_dest); 3750 ether_addr_copy(match->mask.eth_addrs.dst, 3751 ether_m_spec->h_dest); 3752 } 3753 if (ether_m_spec->h_proto) { 3754 match->key.basic.n_proto = ether_spec->h_proto; 3755 match->mask.basic.n_proto = ether_m_spec->h_proto; 3756 } 3757 } 3758 break; 3759 case TCP_V4_FLOW: 3760 case UDP_V4_FLOW: { 3761 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; 3762 3763 match->key.basic.n_proto = htons(ETH_P_IP); 3764 3765 v4_spec = &fs->h_u.tcp_ip4_spec; 3766 v4_m_spec = &fs->m_u.tcp_ip4_spec; 3767 3768 if (v4_m_spec->ip4src) { 3769 match->key.ipv4.src = v4_spec->ip4src; 3770 match->mask.ipv4.src = v4_m_spec->ip4src; 3771 } 3772 if (v4_m_spec->ip4dst) { 3773 match->key.ipv4.dst = v4_spec->ip4dst; 3774 match->mask.ipv4.dst = v4_m_spec->ip4dst; 3775 } 3776 if (v4_m_spec->ip4src || 3777 v4_m_spec->ip4dst) { 3778 match->dissector.used_keys |= 3779 BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS); 3780 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = 3781 offsetof(struct ethtool_rx_flow_key, ipv4); 3782 } 3783 if (v4_m_spec->psrc) { 3784 match->key.tp.src = v4_spec->psrc; 3785 match->mask.tp.src = v4_m_spec->psrc; 3786 } 3787 if (v4_m_spec->pdst) { 3788 match->key.tp.dst = v4_spec->pdst; 3789 match->mask.tp.dst = v4_m_spec->pdst; 3790 } 3791 if (v4_m_spec->psrc || 3792 v4_m_spec->pdst) { 3793 match->dissector.used_keys |= 3794 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3795 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3796 offsetof(struct ethtool_rx_flow_key, tp); 3797 } 3798 if (v4_m_spec->tos) { 3799 match->key.ip.tos = v4_spec->tos; 3800 match->mask.ip.tos = v4_m_spec->tos; 3801 match->dissector.used_keys |= 3802 BIT(FLOW_DISSECTOR_KEY_IP); 3803 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3804 offsetof(struct ethtool_rx_flow_key, ip); 3805 } 3806 } 3807 break; 3808 case TCP_V6_FLOW: 3809 case UDP_V6_FLOW: { 3810 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; 3811 3812 match->key.basic.n_proto = htons(ETH_P_IPV6); 3813 3814 v6_spec = &fs->h_u.tcp_ip6_spec; 3815 v6_m_spec = &fs->m_u.tcp_ip6_spec; 3816 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) { 3817 memcpy(&match->key.ipv6.src, v6_spec->ip6src, 3818 sizeof(match->key.ipv6.src)); 3819 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, 3820 sizeof(match->mask.ipv6.src)); 3821 } 3822 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3823 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, 3824 sizeof(match->key.ipv6.dst)); 3825 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, 3826 sizeof(match->mask.ipv6.dst)); 3827 } 3828 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) || 3829 !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3830 match->dissector.used_keys |= 3831 BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS); 3832 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = 3833 offsetof(struct ethtool_rx_flow_key, ipv6); 3834 } 3835 if (v6_m_spec->psrc) { 3836 match->key.tp.src = v6_spec->psrc; 3837 match->mask.tp.src = v6_m_spec->psrc; 3838 } 3839 if (v6_m_spec->pdst) { 3840 match->key.tp.dst = v6_spec->pdst; 3841 match->mask.tp.dst = v6_m_spec->pdst; 3842 } 3843 if (v6_m_spec->psrc || 3844 v6_m_spec->pdst) { 3845 match->dissector.used_keys |= 3846 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3847 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3848 offsetof(struct ethtool_rx_flow_key, tp); 3849 } 3850 if (v6_m_spec->tclass) { 3851 match->key.ip.tos = v6_spec->tclass; 3852 match->mask.ip.tos = v6_m_spec->tclass; 3853 match->dissector.used_keys |= 3854 BIT_ULL(FLOW_DISSECTOR_KEY_IP); 3855 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3856 offsetof(struct ethtool_rx_flow_key, ip); 3857 } 3858 } 3859 break; 3860 default: 3861 ethtool_rx_flow_rule_destroy(flow); 3862 return ERR_PTR(-EINVAL); 3863 } 3864 3865 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3866 case TCP_V4_FLOW: 3867 case TCP_V6_FLOW: 3868 match->key.basic.ip_proto = IPPROTO_TCP; 3869 match->mask.basic.ip_proto = 0xff; 3870 break; 3871 case UDP_V4_FLOW: 3872 case UDP_V6_FLOW: 3873 match->key.basic.ip_proto = IPPROTO_UDP; 3874 match->mask.basic.ip_proto = 0xff; 3875 break; 3876 } 3877 3878 match->dissector.used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_BASIC); 3879 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = 3880 offsetof(struct ethtool_rx_flow_key, basic); 3881 3882 if (fs->flow_type & FLOW_EXT) { 3883 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3884 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3885 3886 if (ext_m_spec->vlan_etype) { 3887 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; 3888 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; 3889 } 3890 3891 if (ext_m_spec->vlan_tci) { 3892 match->key.vlan.vlan_id = 3893 ntohs(ext_h_spec->vlan_tci) & 0x0fff; 3894 match->mask.vlan.vlan_id = 3895 ntohs(ext_m_spec->vlan_tci) & 0x0fff; 3896 3897 match->key.vlan.vlan_dei = 3898 !!(ext_h_spec->vlan_tci & htons(0x1000)); 3899 match->mask.vlan.vlan_dei = 3900 !!(ext_m_spec->vlan_tci & htons(0x1000)); 3901 3902 match->key.vlan.vlan_priority = 3903 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; 3904 match->mask.vlan.vlan_priority = 3905 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; 3906 } 3907 3908 if (ext_m_spec->vlan_etype || 3909 ext_m_spec->vlan_tci) { 3910 match->dissector.used_keys |= 3911 BIT_ULL(FLOW_DISSECTOR_KEY_VLAN); 3912 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = 3913 offsetof(struct ethtool_rx_flow_key, vlan); 3914 } 3915 } 3916 if (fs->flow_type & FLOW_MAC_EXT) { 3917 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3918 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3919 3920 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, 3921 ETH_ALEN); 3922 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, 3923 ETH_ALEN); 3924 3925 match->dissector.used_keys |= 3926 BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS); 3927 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = 3928 offsetof(struct ethtool_rx_flow_key, eth_addrs); 3929 } 3930 3931 act = &flow->rule->action.entries[0]; 3932 switch (fs->ring_cookie) { 3933 case RX_CLS_FLOW_DISC: 3934 act->id = FLOW_ACTION_DROP; 3935 break; 3936 case RX_CLS_FLOW_WAKE: 3937 act->id = FLOW_ACTION_WAKE; 3938 break; 3939 default: 3940 act->id = FLOW_ACTION_QUEUE; 3941 if (fs->flow_type & FLOW_RSS) 3942 act->queue.ctx = input->rss_ctx; 3943 3944 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); 3945 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); 3946 break; 3947 } 3948 3949 return flow; 3950 } 3951 EXPORT_SYMBOL(ethtool_rx_flow_rule_create); 3952 3953 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) 3954 { 3955 kfree(flow->rule); 3956 kfree(flow); 3957 } 3958 EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); 3959