1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * net/core/ethtool.c - Ethtool ioctl handler 4 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx> 5 * 6 * This file is where we call all the ethtool_ops commands to get 7 * the information ethtool needs. 8 */ 9 10 #include <linux/compat.h> 11 #include <linux/etherdevice.h> 12 #include <linux/module.h> 13 #include <linux/types.h> 14 #include <linux/capability.h> 15 #include <linux/errno.h> 16 #include <linux/ethtool.h> 17 #include <linux/netdevice.h> 18 #include <linux/net_tstamp.h> 19 #include <linux/phy.h> 20 #include <linux/bitops.h> 21 #include <linux/uaccess.h> 22 #include <linux/vmalloc.h> 23 #include <linux/sfp.h> 24 #include <linux/slab.h> 25 #include <linux/rtnetlink.h> 26 #include <linux/sched/signal.h> 27 #include <linux/net.h> 28 #include <linux/pm_runtime.h> 29 #include <linux/utsname.h> 30 #include <net/devlink.h> 31 #include <net/ipv6.h> 32 #include <net/xdp_sock_drv.h> 33 #include <net/flow_offload.h> 34 #include <net/netdev_lock.h> 35 #include <linux/ethtool_netlink.h> 36 #include "common.h" 37 38 /* State held across locks and calls for commands which have devlink fallback */ 39 struct ethtool_devlink_compat { 40 struct devlink *devlink; 41 union { 42 struct ethtool_flash efl; 43 struct ethtool_drvinfo info; 44 }; 45 }; 46 47 static struct devlink *netdev_to_devlink_get(struct net_device *dev) 48 { 49 if (!dev->devlink_port) 50 return NULL; 51 return devlink_try_get(dev->devlink_port->devlink); 52 } 53 54 /* 55 * Some useful ethtool_ops methods that're device independent. 56 * If we find that all drivers want to do the same thing here, 57 * we can turn these into dev_() function calls. 58 */ 59 60 u32 ethtool_op_get_link(struct net_device *dev) 61 { 62 /* Synchronize carrier state with link watch, see also rtnl_getlink() */ 63 linkwatch_sync_dev(dev); 64 65 return netif_carrier_ok(dev) ? 1 : 0; 66 } 67 EXPORT_SYMBOL(ethtool_op_get_link); 68 69 int ethtool_op_get_ts_info(struct net_device *dev, 70 struct kernel_ethtool_ts_info *info) 71 { 72 info->so_timestamping = 73 SOF_TIMESTAMPING_TX_SOFTWARE | 74 SOF_TIMESTAMPING_RX_SOFTWARE | 75 SOF_TIMESTAMPING_SOFTWARE; 76 info->phc_index = -1; 77 return 0; 78 } 79 EXPORT_SYMBOL(ethtool_op_get_ts_info); 80 81 /* Handlers for each ethtool command */ 82 83 static int ethtool_get_features(struct net_device *dev, void __user *useraddr) 84 { 85 struct ethtool_gfeatures cmd = { 86 .cmd = ETHTOOL_GFEATURES, 87 .size = ETHTOOL_DEV_FEATURE_WORDS, 88 }; 89 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 90 u32 __user *sizeaddr; 91 u32 copy_size; 92 int i; 93 94 /* in case feature bits run out again */ 95 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); 96 97 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 98 features[i].available = (u32)(dev->hw_features >> (32 * i)); 99 features[i].requested = (u32)(dev->wanted_features >> (32 * i)); 100 features[i].active = (u32)(dev->features >> (32 * i)); 101 features[i].never_changed = 102 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); 103 } 104 105 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); 106 if (get_user(copy_size, sizeaddr)) 107 return -EFAULT; 108 109 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) 110 copy_size = ETHTOOL_DEV_FEATURE_WORDS; 111 112 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 113 return -EFAULT; 114 useraddr += sizeof(cmd); 115 if (copy_to_user(useraddr, features, 116 array_size(copy_size, sizeof(*features)))) 117 return -EFAULT; 118 119 return 0; 120 } 121 122 static int ethtool_set_features(struct net_device *dev, void __user *useraddr) 123 { 124 struct ethtool_sfeatures cmd; 125 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 126 netdev_features_t wanted = 0, valid = 0; 127 int i, ret = 0; 128 129 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 130 return -EFAULT; 131 useraddr += sizeof(cmd); 132 133 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) 134 return -EINVAL; 135 136 if (copy_from_user(features, useraddr, sizeof(features))) 137 return -EFAULT; 138 139 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 140 valid |= (netdev_features_t)features[i].valid << (32 * i); 141 wanted |= (netdev_features_t)features[i].requested << (32 * i); 142 } 143 144 if (valid & ~NETIF_F_ETHTOOL_BITS) 145 return -EINVAL; 146 147 if (valid & ~dev->hw_features) { 148 valid &= dev->hw_features; 149 ret |= ETHTOOL_F_UNSUPPORTED; 150 } 151 152 dev->wanted_features &= ~valid; 153 dev->wanted_features |= wanted & valid; 154 __netdev_update_features(dev); 155 156 if ((dev->wanted_features ^ dev->features) & valid) 157 ret |= ETHTOOL_F_WISH; 158 159 return ret; 160 } 161 162 static int __ethtool_get_sset_count(struct net_device *dev, int sset) 163 { 164 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 165 const struct ethtool_ops *ops = dev->ethtool_ops; 166 167 if (sset == ETH_SS_FEATURES) 168 return ARRAY_SIZE(netdev_features_strings); 169 170 if (sset == ETH_SS_RSS_HASH_FUNCS) 171 return ARRAY_SIZE(rss_hash_func_strings); 172 173 if (sset == ETH_SS_TUNABLES) 174 return ARRAY_SIZE(tunable_strings); 175 176 if (sset == ETH_SS_PHY_TUNABLES) 177 return ARRAY_SIZE(phy_tunable_strings); 178 179 if (sset == ETH_SS_PHY_STATS && dev->phydev && 180 !ops->get_ethtool_phy_stats && 181 phy_ops && phy_ops->get_sset_count) 182 return phy_ops->get_sset_count(dev->phydev); 183 184 if (sset == ETH_SS_LINK_MODES) 185 return __ETHTOOL_LINK_MODE_MASK_NBITS; 186 187 if (ops->get_sset_count && ops->get_strings) 188 return ops->get_sset_count(dev, sset); 189 else 190 return -EOPNOTSUPP; 191 } 192 193 static void __ethtool_get_strings(struct net_device *dev, 194 u32 stringset, u8 *data) 195 { 196 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 197 const struct ethtool_ops *ops = dev->ethtool_ops; 198 199 if (stringset == ETH_SS_FEATURES) 200 memcpy(data, netdev_features_strings, 201 sizeof(netdev_features_strings)); 202 else if (stringset == ETH_SS_RSS_HASH_FUNCS) 203 memcpy(data, rss_hash_func_strings, 204 sizeof(rss_hash_func_strings)); 205 else if (stringset == ETH_SS_TUNABLES) 206 memcpy(data, tunable_strings, sizeof(tunable_strings)); 207 else if (stringset == ETH_SS_PHY_TUNABLES) 208 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); 209 else if (stringset == ETH_SS_PHY_STATS && dev->phydev && 210 !ops->get_ethtool_phy_stats && phy_ops && 211 phy_ops->get_strings) 212 phy_ops->get_strings(dev->phydev, data); 213 else if (stringset == ETH_SS_LINK_MODES) 214 memcpy(data, link_mode_names, 215 __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN); 216 else 217 /* ops->get_strings is valid because checked earlier */ 218 ops->get_strings(dev, stringset, data); 219 } 220 221 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) 222 { 223 /* feature masks of legacy discrete ethtool ops */ 224 225 switch (eth_cmd) { 226 case ETHTOOL_GTXCSUM: 227 case ETHTOOL_STXCSUM: 228 return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC | 229 NETIF_F_SCTP_CRC; 230 case ETHTOOL_GRXCSUM: 231 case ETHTOOL_SRXCSUM: 232 return NETIF_F_RXCSUM; 233 case ETHTOOL_GSG: 234 case ETHTOOL_SSG: 235 return NETIF_F_SG | NETIF_F_FRAGLIST; 236 case ETHTOOL_GTSO: 237 case ETHTOOL_STSO: 238 return NETIF_F_ALL_TSO; 239 case ETHTOOL_GGSO: 240 case ETHTOOL_SGSO: 241 return NETIF_F_GSO; 242 case ETHTOOL_GGRO: 243 case ETHTOOL_SGRO: 244 return NETIF_F_GRO; 245 default: 246 BUG(); 247 } 248 } 249 250 static int ethtool_get_one_feature(struct net_device *dev, 251 char __user *useraddr, u32 ethcmd) 252 { 253 netdev_features_t mask = ethtool_get_feature_mask(ethcmd); 254 struct ethtool_value edata = { 255 .cmd = ethcmd, 256 .data = !!(dev->features & mask), 257 }; 258 259 if (copy_to_user(useraddr, &edata, sizeof(edata))) 260 return -EFAULT; 261 return 0; 262 } 263 264 static int ethtool_set_one_feature(struct net_device *dev, 265 void __user *useraddr, u32 ethcmd) 266 { 267 struct ethtool_value edata; 268 netdev_features_t mask; 269 270 if (copy_from_user(&edata, useraddr, sizeof(edata))) 271 return -EFAULT; 272 273 mask = ethtool_get_feature_mask(ethcmd); 274 mask &= dev->hw_features; 275 if (!mask) 276 return -EOPNOTSUPP; 277 278 if (edata.data) 279 dev->wanted_features |= mask; 280 else 281 dev->wanted_features &= ~mask; 282 283 __netdev_update_features(dev); 284 285 return 0; 286 } 287 288 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ 289 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) 290 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ 291 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ 292 NETIF_F_RXHASH) 293 294 static u32 __ethtool_get_flags(struct net_device *dev) 295 { 296 u32 flags = 0; 297 298 if (dev->features & NETIF_F_LRO) 299 flags |= ETH_FLAG_LRO; 300 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 301 flags |= ETH_FLAG_RXVLAN; 302 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) 303 flags |= ETH_FLAG_TXVLAN; 304 if (dev->features & NETIF_F_NTUPLE) 305 flags |= ETH_FLAG_NTUPLE; 306 if (dev->features & NETIF_F_RXHASH) 307 flags |= ETH_FLAG_RXHASH; 308 309 return flags; 310 } 311 312 static int __ethtool_set_flags(struct net_device *dev, u32 data) 313 { 314 netdev_features_t features = 0, changed; 315 316 if (data & ~ETH_ALL_FLAGS) 317 return -EINVAL; 318 319 if (data & ETH_FLAG_LRO) 320 features |= NETIF_F_LRO; 321 if (data & ETH_FLAG_RXVLAN) 322 features |= NETIF_F_HW_VLAN_CTAG_RX; 323 if (data & ETH_FLAG_TXVLAN) 324 features |= NETIF_F_HW_VLAN_CTAG_TX; 325 if (data & ETH_FLAG_NTUPLE) 326 features |= NETIF_F_NTUPLE; 327 if (data & ETH_FLAG_RXHASH) 328 features |= NETIF_F_RXHASH; 329 330 /* allow changing only bits set in hw_features */ 331 changed = (features ^ dev->features) & ETH_ALL_FEATURES; 332 if (changed & ~dev->hw_features) 333 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; 334 335 dev->wanted_features = 336 (dev->wanted_features & ~changed) | (features & changed); 337 338 __netdev_update_features(dev); 339 340 return 0; 341 } 342 343 /* Given two link masks, AND them together and save the result in dst. */ 344 void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, 345 struct ethtool_link_ksettings *src) 346 { 347 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); 348 unsigned int idx = 0; 349 350 for (; idx < size; idx++) { 351 dst->link_modes.supported[idx] &= 352 src->link_modes.supported[idx]; 353 dst->link_modes.advertising[idx] &= 354 src->link_modes.advertising[idx]; 355 } 356 } 357 EXPORT_SYMBOL(ethtool_intersect_link_masks); 358 359 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, 360 u32 legacy_u32) 361 { 362 linkmode_zero(dst); 363 dst[0] = legacy_u32; 364 } 365 EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); 366 367 /* return false if src had higher bits set. lower bits always updated. */ 368 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, 369 const unsigned long *src) 370 { 371 *legacy_u32 = src[0]; 372 return find_next_bit(src, __ETHTOOL_LINK_MODE_MASK_NBITS, 32) == 373 __ETHTOOL_LINK_MODE_MASK_NBITS; 374 } 375 EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); 376 377 /* return false if ksettings link modes had higher bits 378 * set. legacy_settings always updated (best effort) 379 */ 380 static bool 381 convert_link_ksettings_to_legacy_settings( 382 struct ethtool_cmd *legacy_settings, 383 const struct ethtool_link_ksettings *link_ksettings) 384 { 385 bool retval = true; 386 387 memset(legacy_settings, 0, sizeof(*legacy_settings)); 388 /* this also clears the deprecated fields in legacy structure: 389 * __u8 transceiver; 390 * __u32 maxtxpkt; 391 * __u32 maxrxpkt; 392 */ 393 394 retval &= ethtool_convert_link_mode_to_legacy_u32( 395 &legacy_settings->supported, 396 link_ksettings->link_modes.supported); 397 retval &= ethtool_convert_link_mode_to_legacy_u32( 398 &legacy_settings->advertising, 399 link_ksettings->link_modes.advertising); 400 retval &= ethtool_convert_link_mode_to_legacy_u32( 401 &legacy_settings->lp_advertising, 402 link_ksettings->link_modes.lp_advertising); 403 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); 404 legacy_settings->duplex 405 = link_ksettings->base.duplex; 406 legacy_settings->port 407 = link_ksettings->base.port; 408 legacy_settings->phy_address 409 = link_ksettings->base.phy_address; 410 legacy_settings->autoneg 411 = link_ksettings->base.autoneg; 412 legacy_settings->mdio_support 413 = link_ksettings->base.mdio_support; 414 legacy_settings->eth_tp_mdix 415 = link_ksettings->base.eth_tp_mdix; 416 legacy_settings->eth_tp_mdix_ctrl 417 = link_ksettings->base.eth_tp_mdix_ctrl; 418 legacy_settings->transceiver 419 = link_ksettings->base.transceiver; 420 return retval; 421 } 422 423 /* number of 32-bit words to store the user's link mode bitmaps */ 424 #define __ETHTOOL_LINK_MODE_MASK_NU32 \ 425 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) 426 427 /* layout of the struct passed from/to userland */ 428 struct ethtool_link_usettings { 429 struct ethtool_link_settings base; 430 struct { 431 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; 432 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 433 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 434 } link_modes; 435 }; 436 437 /* Internal kernel helper to query a device ethtool_link_settings. */ 438 int __ethtool_get_link_ksettings(struct net_device *dev, 439 struct ethtool_link_ksettings *link_ksettings) 440 { 441 ASSERT_RTNL(); 442 443 if (!dev->ethtool_ops->get_link_ksettings) 444 return -EOPNOTSUPP; 445 446 if (!netif_device_present(dev)) 447 return -ENODEV; 448 449 memset(link_ksettings, 0, sizeof(*link_ksettings)); 450 return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings); 451 } 452 EXPORT_SYMBOL(__ethtool_get_link_ksettings); 453 454 /* convert ethtool_link_usettings in user space to a kernel internal 455 * ethtool_link_ksettings. return 0 on success, errno on error. 456 */ 457 static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, 458 const void __user *from) 459 { 460 struct ethtool_link_usettings link_usettings; 461 462 if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) 463 return -EFAULT; 464 465 memcpy(&to->base, &link_usettings.base, sizeof(to->base)); 466 bitmap_from_arr32(to->link_modes.supported, 467 link_usettings.link_modes.supported, 468 __ETHTOOL_LINK_MODE_MASK_NBITS); 469 bitmap_from_arr32(to->link_modes.advertising, 470 link_usettings.link_modes.advertising, 471 __ETHTOOL_LINK_MODE_MASK_NBITS); 472 bitmap_from_arr32(to->link_modes.lp_advertising, 473 link_usettings.link_modes.lp_advertising, 474 __ETHTOOL_LINK_MODE_MASK_NBITS); 475 476 return 0; 477 } 478 479 /* Check if the user is trying to change anything besides speed/duplex */ 480 bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd) 481 { 482 struct ethtool_link_settings base2 = {}; 483 484 base2.speed = cmd->base.speed; 485 base2.port = PORT_OTHER; 486 base2.duplex = cmd->base.duplex; 487 base2.cmd = cmd->base.cmd; 488 base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords; 489 490 return !memcmp(&base2, &cmd->base, sizeof(base2)) && 491 bitmap_empty(cmd->link_modes.supported, 492 __ETHTOOL_LINK_MODE_MASK_NBITS) && 493 bitmap_empty(cmd->link_modes.lp_advertising, 494 __ETHTOOL_LINK_MODE_MASK_NBITS); 495 } 496 497 /* convert a kernel internal ethtool_link_ksettings to 498 * ethtool_link_usettings in user space. return 0 on success, errno on 499 * error. 500 */ 501 static int 502 store_link_ksettings_for_user(void __user *to, 503 const struct ethtool_link_ksettings *from) 504 { 505 struct ethtool_link_usettings link_usettings; 506 507 memcpy(&link_usettings, from, sizeof(link_usettings)); 508 bitmap_to_arr32(link_usettings.link_modes.supported, 509 from->link_modes.supported, 510 __ETHTOOL_LINK_MODE_MASK_NBITS); 511 bitmap_to_arr32(link_usettings.link_modes.advertising, 512 from->link_modes.advertising, 513 __ETHTOOL_LINK_MODE_MASK_NBITS); 514 bitmap_to_arr32(link_usettings.link_modes.lp_advertising, 515 from->link_modes.lp_advertising, 516 __ETHTOOL_LINK_MODE_MASK_NBITS); 517 518 if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) 519 return -EFAULT; 520 521 return 0; 522 } 523 524 /* Query device for its ethtool_link_settings. */ 525 static int ethtool_get_link_ksettings(struct net_device *dev, 526 void __user *useraddr) 527 { 528 int err = 0; 529 struct ethtool_link_ksettings link_ksettings; 530 531 ASSERT_RTNL(); 532 if (!dev->ethtool_ops->get_link_ksettings) 533 return -EOPNOTSUPP; 534 535 /* handle bitmap nbits handshake */ 536 if (copy_from_user(&link_ksettings.base, useraddr, 537 sizeof(link_ksettings.base))) 538 return -EFAULT; 539 540 if (__ETHTOOL_LINK_MODE_MASK_NU32 541 != link_ksettings.base.link_mode_masks_nwords) { 542 /* wrong link mode nbits requested */ 543 memset(&link_ksettings, 0, sizeof(link_ksettings)); 544 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 545 /* send back number of words required as negative val */ 546 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, 547 "need too many bits for link modes!"); 548 link_ksettings.base.link_mode_masks_nwords 549 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); 550 551 /* copy the base fields back to user, not the link 552 * mode bitmaps 553 */ 554 if (copy_to_user(useraddr, &link_ksettings.base, 555 sizeof(link_ksettings.base))) 556 return -EFAULT; 557 558 return 0; 559 } 560 561 /* handshake successful: user/kernel agree on 562 * link_mode_masks_nwords 563 */ 564 565 memset(&link_ksettings, 0, sizeof(link_ksettings)); 566 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 567 if (err < 0) 568 return err; 569 570 /* make sure we tell the right values to user */ 571 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 572 link_ksettings.base.link_mode_masks_nwords 573 = __ETHTOOL_LINK_MODE_MASK_NU32; 574 link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED; 575 link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED; 576 link_ksettings.base.rate_matching = RATE_MATCH_NONE; 577 578 return store_link_ksettings_for_user(useraddr, &link_ksettings); 579 } 580 581 /* Update device ethtool_link_settings. */ 582 static int ethtool_set_link_ksettings(struct net_device *dev, 583 void __user *useraddr) 584 { 585 struct ethtool_link_ksettings link_ksettings = {}; 586 int err; 587 588 ASSERT_RTNL(); 589 590 if (!dev->ethtool_ops->set_link_ksettings) 591 return -EOPNOTSUPP; 592 593 /* make sure nbits field has expected value */ 594 if (copy_from_user(&link_ksettings.base, useraddr, 595 sizeof(link_ksettings.base))) 596 return -EFAULT; 597 598 if (__ETHTOOL_LINK_MODE_MASK_NU32 599 != link_ksettings.base.link_mode_masks_nwords) 600 return -EINVAL; 601 602 /* copy the whole structure, now that we know it has expected 603 * format 604 */ 605 err = load_link_ksettings_from_user(&link_ksettings, useraddr); 606 if (err) 607 return err; 608 609 /* re-check nwords field, just in case */ 610 if (__ETHTOOL_LINK_MODE_MASK_NU32 611 != link_ksettings.base.link_mode_masks_nwords) 612 return -EINVAL; 613 614 if (link_ksettings.base.master_slave_cfg || 615 link_ksettings.base.master_slave_state) 616 return -EINVAL; 617 618 err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 619 if (err >= 0) { 620 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); 621 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); 622 } 623 return err; 624 } 625 626 int ethtool_virtdev_set_link_ksettings(struct net_device *dev, 627 const struct ethtool_link_ksettings *cmd, 628 u32 *dev_speed, u8 *dev_duplex) 629 { 630 u32 speed; 631 u8 duplex; 632 633 speed = cmd->base.speed; 634 duplex = cmd->base.duplex; 635 /* don't allow custom speed and duplex */ 636 if (!ethtool_validate_speed(speed) || 637 !ethtool_validate_duplex(duplex) || 638 !ethtool_virtdev_validate_cmd(cmd)) 639 return -EINVAL; 640 *dev_speed = speed; 641 *dev_duplex = duplex; 642 643 return 0; 644 } 645 EXPORT_SYMBOL(ethtool_virtdev_set_link_ksettings); 646 647 /* Query device for its ethtool_cmd settings. 648 * 649 * Backward compatibility note: for compatibility with legacy ethtool, this is 650 * now implemented via get_link_ksettings. When driver reports higher link mode 651 * bits, a kernel warning is logged once (with name of 1st driver/device) to 652 * recommend user to upgrade ethtool, but the command is successful (only the 653 * lower link mode bits reported back to user). Deprecated fields from 654 * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero. 655 */ 656 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) 657 { 658 struct ethtool_link_ksettings link_ksettings; 659 struct ethtool_cmd cmd; 660 int err; 661 662 ASSERT_RTNL(); 663 if (!dev->ethtool_ops->get_link_ksettings) 664 return -EOPNOTSUPP; 665 666 if (dev->ethtool->module_fw_flash_in_progress) 667 return -EBUSY; 668 669 memset(&link_ksettings, 0, sizeof(link_ksettings)); 670 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 671 if (err < 0) 672 return err; 673 convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings); 674 675 /* send a sensible cmd tag back to user */ 676 cmd.cmd = ETHTOOL_GSET; 677 678 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 679 return -EFAULT; 680 681 return 0; 682 } 683 684 /* Update device link settings with given ethtool_cmd. 685 * 686 * Backward compatibility note: for compatibility with legacy ethtool, this is 687 * now always implemented via set_link_settings. When user's request updates 688 * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel 689 * warning is logged once (with name of 1st driver/device) to recommend user to 690 * upgrade ethtool, and the request is rejected. 691 */ 692 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) 693 { 694 struct ethtool_link_ksettings link_ksettings; 695 struct ethtool_cmd cmd; 696 int ret; 697 698 ASSERT_RTNL(); 699 700 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 701 return -EFAULT; 702 if (!dev->ethtool_ops->set_link_ksettings) 703 return -EOPNOTSUPP; 704 705 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd)) 706 return -EINVAL; 707 link_ksettings.base.link_mode_masks_nwords = 708 __ETHTOOL_LINK_MODE_MASK_NU32; 709 ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 710 if (ret >= 0) { 711 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); 712 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); 713 } 714 return ret; 715 } 716 717 static int 718 ethtool_get_drvinfo(struct net_device *dev, struct ethtool_devlink_compat *rsp) 719 { 720 const struct ethtool_ops *ops = dev->ethtool_ops; 721 struct device *parent = dev->dev.parent; 722 723 rsp->info.cmd = ETHTOOL_GDRVINFO; 724 strscpy(rsp->info.version, init_uts_ns.name.release, 725 sizeof(rsp->info.version)); 726 if (ops->get_drvinfo) { 727 ops->get_drvinfo(dev, &rsp->info); 728 if (!rsp->info.bus_info[0] && parent) 729 strscpy(rsp->info.bus_info, dev_name(parent), 730 sizeof(rsp->info.bus_info)); 731 if (!rsp->info.driver[0] && parent && parent->driver) 732 strscpy(rsp->info.driver, parent->driver->name, 733 sizeof(rsp->info.driver)); 734 } else if (parent && parent->driver) { 735 strscpy(rsp->info.bus_info, dev_name(parent), 736 sizeof(rsp->info.bus_info)); 737 strscpy(rsp->info.driver, parent->driver->name, 738 sizeof(rsp->info.driver)); 739 } else if (dev->rtnl_link_ops) { 740 strscpy(rsp->info.driver, dev->rtnl_link_ops->kind, 741 sizeof(rsp->info.driver)); 742 } else { 743 return -EOPNOTSUPP; 744 } 745 746 /* 747 * this method of obtaining string set info is deprecated; 748 * Use ETHTOOL_GSSET_INFO instead. 749 */ 750 if (ops->get_sset_count) { 751 int rc; 752 753 rc = ops->get_sset_count(dev, ETH_SS_TEST); 754 if (rc >= 0) 755 rsp->info.testinfo_len = rc; 756 rc = ops->get_sset_count(dev, ETH_SS_STATS); 757 if (rc >= 0) 758 rsp->info.n_stats = rc; 759 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); 760 if (rc >= 0) 761 rsp->info.n_priv_flags = rc; 762 } 763 if (ops->get_regs_len) { 764 int ret = ops->get_regs_len(dev); 765 766 if (ret > 0) 767 rsp->info.regdump_len = ret; 768 } 769 770 if (ops->get_eeprom_len) 771 rsp->info.eedump_len = ops->get_eeprom_len(dev); 772 773 if (!rsp->info.fw_version[0]) 774 rsp->devlink = netdev_to_devlink_get(dev); 775 776 return 0; 777 } 778 779 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, 780 void __user *useraddr) 781 { 782 struct ethtool_sset_info info; 783 u64 sset_mask; 784 int i, idx = 0, n_bits = 0, ret, rc; 785 u32 *info_buf = NULL; 786 787 if (copy_from_user(&info, useraddr, sizeof(info))) 788 return -EFAULT; 789 790 /* store copy of mask, because we zero struct later on */ 791 sset_mask = info.sset_mask; 792 if (!sset_mask) 793 return 0; 794 795 /* calculate size of return buffer */ 796 n_bits = hweight64(sset_mask); 797 798 memset(&info, 0, sizeof(info)); 799 info.cmd = ETHTOOL_GSSET_INFO; 800 801 info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER); 802 if (!info_buf) 803 return -ENOMEM; 804 805 /* 806 * fill return buffer based on input bitmask and successful 807 * get_sset_count return 808 */ 809 for (i = 0; i < 64; i++) { 810 if (!(sset_mask & (1ULL << i))) 811 continue; 812 813 rc = __ethtool_get_sset_count(dev, i); 814 if (rc >= 0) { 815 info.sset_mask |= (1ULL << i); 816 info_buf[idx++] = rc; 817 } 818 } 819 820 ret = -EFAULT; 821 if (copy_to_user(useraddr, &info, sizeof(info))) 822 goto out; 823 824 useraddr += offsetof(struct ethtool_sset_info, data); 825 if (copy_to_user(useraddr, info_buf, array_size(idx, sizeof(u32)))) 826 goto out; 827 828 ret = 0; 829 830 out: 831 kfree(info_buf); 832 return ret; 833 } 834 835 static noinline_for_stack int 836 ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc, 837 const struct compat_ethtool_rxnfc __user *useraddr, 838 size_t size) 839 { 840 struct compat_ethtool_rxnfc crxnfc = {}; 841 842 /* We expect there to be holes between fs.m_ext and 843 * fs.ring_cookie and at the end of fs, but nowhere else. 844 * On non-x86, no conversion should be needed. 845 */ 846 BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) && 847 sizeof(struct compat_ethtool_rxnfc) != 848 sizeof(struct ethtool_rxnfc)); 849 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) + 850 sizeof(useraddr->fs.m_ext) != 851 offsetof(struct ethtool_rxnfc, fs.m_ext) + 852 sizeof(rxnfc->fs.m_ext)); 853 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) - 854 offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) != 855 offsetof(struct ethtool_rxnfc, fs.location) - 856 offsetof(struct ethtool_rxnfc, fs.ring_cookie)); 857 858 if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc)))) 859 return -EFAULT; 860 861 *rxnfc = (struct ethtool_rxnfc) { 862 .cmd = crxnfc.cmd, 863 .flow_type = crxnfc.flow_type, 864 .data = crxnfc.data, 865 .fs = { 866 .flow_type = crxnfc.fs.flow_type, 867 .h_u = crxnfc.fs.h_u, 868 .h_ext = crxnfc.fs.h_ext, 869 .m_u = crxnfc.fs.m_u, 870 .m_ext = crxnfc.fs.m_ext, 871 .ring_cookie = crxnfc.fs.ring_cookie, 872 .location = crxnfc.fs.location, 873 }, 874 .rule_cnt = crxnfc.rule_cnt, 875 }; 876 877 return 0; 878 } 879 880 static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc, 881 const void __user *useraddr, 882 size_t size) 883 { 884 if (compat_need_64bit_alignment_fixup()) 885 return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size); 886 887 if (copy_from_user(rxnfc, useraddr, size)) 888 return -EFAULT; 889 890 return 0; 891 } 892 893 static int ethtool_rxnfc_copy_to_compat(void __user *useraddr, 894 const struct ethtool_rxnfc *rxnfc, 895 size_t size, const u32 *rule_buf) 896 { 897 struct compat_ethtool_rxnfc crxnfc; 898 899 memset(&crxnfc, 0, sizeof(crxnfc)); 900 crxnfc = (struct compat_ethtool_rxnfc) { 901 .cmd = rxnfc->cmd, 902 .flow_type = rxnfc->flow_type, 903 .data = rxnfc->data, 904 .fs = { 905 .flow_type = rxnfc->fs.flow_type, 906 .h_u = rxnfc->fs.h_u, 907 .h_ext = rxnfc->fs.h_ext, 908 .m_u = rxnfc->fs.m_u, 909 .m_ext = rxnfc->fs.m_ext, 910 .ring_cookie = rxnfc->fs.ring_cookie, 911 .location = rxnfc->fs.location, 912 }, 913 .rule_cnt = rxnfc->rule_cnt, 914 }; 915 916 if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc)))) 917 return -EFAULT; 918 919 return 0; 920 } 921 922 static int ethtool_rxnfc_copy_struct(u32 cmd, struct ethtool_rxnfc *info, 923 size_t *info_size, void __user *useraddr) 924 { 925 /* struct ethtool_rxnfc was originally defined for 926 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 927 * members. User-space might still be using that 928 * definition. 929 */ 930 if (cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) 931 *info_size = (offsetof(struct ethtool_rxnfc, data) + 932 sizeof(info->data)); 933 934 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) 935 return -EFAULT; 936 937 if ((cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) && info->flow_type & FLOW_RSS) { 938 *info_size = sizeof(*info); 939 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) 940 return -EFAULT; 941 /* Since malicious users may modify the original data, 942 * we need to check whether FLOW_RSS is still requested. 943 */ 944 if (!(info->flow_type & FLOW_RSS)) 945 return -EINVAL; 946 } 947 948 if (info->cmd != cmd) 949 return -EINVAL; 950 951 return 0; 952 } 953 954 static int ethtool_rxnfc_copy_to_user(void __user *useraddr, 955 const struct ethtool_rxnfc *rxnfc, 956 size_t size, const u32 *rule_buf) 957 { 958 int ret; 959 960 if (compat_need_64bit_alignment_fixup()) { 961 ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size, 962 rule_buf); 963 useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs); 964 } else { 965 ret = copy_to_user(useraddr, rxnfc, size); 966 useraddr += offsetof(struct ethtool_rxnfc, rule_locs); 967 } 968 969 if (ret) 970 return -EFAULT; 971 972 if (rule_buf) { 973 if (copy_to_user(useraddr, rule_buf, 974 rxnfc->rule_cnt * sizeof(u32))) 975 return -EFAULT; 976 } 977 978 return 0; 979 } 980 981 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, 982 u32 cmd, void __user *useraddr) 983 { 984 const struct ethtool_ops *ops = dev->ethtool_ops; 985 struct ethtool_rxnfc info; 986 size_t info_size = sizeof(info); 987 int rc; 988 989 if (!ops->set_rxnfc) 990 return -EOPNOTSUPP; 991 992 rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 993 if (rc) 994 return rc; 995 996 if (cmd == ETHTOOL_SRXCLSRLINS && info.fs.flow_type & FLOW_RSS) { 997 /* Nonzero ring with RSS only makes sense 998 * if NIC adds them together 999 */ 1000 if (!ops->cap_rss_rxnfc_adds && 1001 ethtool_get_flow_spec_ring(info.fs.ring_cookie)) 1002 return -EINVAL; 1003 1004 if (!xa_load(&dev->ethtool->rss_ctx, info.rss_context)) 1005 return -EINVAL; 1006 } 1007 1008 if (cmd == ETHTOOL_SRXFH && ops->get_rxfh) { 1009 struct ethtool_rxfh_param rxfh = {}; 1010 1011 rc = ops->get_rxfh(dev, &rxfh); 1012 if (rc) 1013 return rc; 1014 1015 /* Sanity check: if symmetric-xor/symmetric-or-xor is set, then: 1016 * 1 - no other fields besides IP src/dst and/or L4 src/dst 1017 * 2 - If src is set, dst must also be set 1018 */ 1019 if ((rxfh.input_xfrm & (RXH_XFRM_SYM_XOR | RXH_XFRM_SYM_OR_XOR)) && 1020 ((info.data & ~(RXH_IP_SRC | RXH_IP_DST | 1021 RXH_L4_B_0_1 | RXH_L4_B_2_3)) || 1022 (!!(info.data & RXH_IP_SRC) ^ !!(info.data & RXH_IP_DST)) || 1023 (!!(info.data & RXH_L4_B_0_1) ^ !!(info.data & RXH_L4_B_2_3)))) 1024 return -EINVAL; 1025 } 1026 1027 rc = ops->set_rxnfc(dev, &info); 1028 if (rc) 1029 return rc; 1030 1031 if (cmd == ETHTOOL_SRXCLSRLINS && 1032 ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL)) 1033 return -EFAULT; 1034 1035 return 0; 1036 } 1037 1038 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, 1039 u32 cmd, void __user *useraddr) 1040 { 1041 struct ethtool_rxnfc info; 1042 size_t info_size = sizeof(info); 1043 const struct ethtool_ops *ops = dev->ethtool_ops; 1044 int ret; 1045 void *rule_buf = NULL; 1046 1047 if (!ops->get_rxnfc) 1048 return -EOPNOTSUPP; 1049 1050 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1051 if (ret) 1052 return ret; 1053 1054 if (info.cmd == ETHTOOL_GRXCLSRLALL) { 1055 if (info.rule_cnt > 0) { 1056 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) 1057 rule_buf = kcalloc(info.rule_cnt, sizeof(u32), 1058 GFP_USER); 1059 if (!rule_buf) 1060 return -ENOMEM; 1061 } 1062 } 1063 1064 ret = ops->get_rxnfc(dev, &info, rule_buf); 1065 if (ret < 0) 1066 goto err_out; 1067 1068 ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf); 1069 err_out: 1070 kfree(rule_buf); 1071 1072 return ret; 1073 } 1074 1075 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, 1076 struct ethtool_rxnfc *rx_rings, 1077 u32 size) 1078 { 1079 int i; 1080 1081 if (copy_from_user(indir, useraddr, array_size(size, sizeof(indir[0])))) 1082 return -EFAULT; 1083 1084 /* Validate ring indices */ 1085 for (i = 0; i < size; i++) 1086 if (indir[i] >= rx_rings->data) 1087 return -EINVAL; 1088 1089 return 0; 1090 } 1091 1092 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; 1093 1094 void netdev_rss_key_fill(void *buffer, size_t len) 1095 { 1096 BUG_ON(len > sizeof(netdev_rss_key)); 1097 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); 1098 memcpy(buffer, netdev_rss_key, len); 1099 } 1100 EXPORT_SYMBOL(netdev_rss_key_fill); 1101 1102 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, 1103 void __user *useraddr) 1104 { 1105 struct ethtool_rxfh_param rxfh = {}; 1106 u32 user_size; 1107 int ret; 1108 1109 if (!dev->ethtool_ops->get_rxfh_indir_size || 1110 !dev->ethtool_ops->get_rxfh) 1111 return -EOPNOTSUPP; 1112 rxfh.indir_size = dev->ethtool_ops->get_rxfh_indir_size(dev); 1113 if (rxfh.indir_size == 0) 1114 return -EOPNOTSUPP; 1115 1116 if (copy_from_user(&user_size, 1117 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1118 sizeof(user_size))) 1119 return -EFAULT; 1120 1121 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), 1122 &rxfh.indir_size, sizeof(rxfh.indir_size))) 1123 return -EFAULT; 1124 1125 /* If the user buffer size is 0, this is just a query for the 1126 * device table size. Otherwise, if it's smaller than the 1127 * device table size it's an error. 1128 */ 1129 if (user_size < rxfh.indir_size) 1130 return user_size == 0 ? 0 : -EINVAL; 1131 1132 rxfh.indir = kcalloc(rxfh.indir_size, sizeof(rxfh.indir[0]), GFP_USER); 1133 if (!rxfh.indir) 1134 return -ENOMEM; 1135 1136 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh); 1137 if (ret) 1138 goto out; 1139 if (copy_to_user(useraddr + 1140 offsetof(struct ethtool_rxfh_indir, ring_index[0]), 1141 rxfh.indir, rxfh.indir_size * sizeof(*rxfh.indir))) 1142 ret = -EFAULT; 1143 1144 out: 1145 kfree(rxfh.indir); 1146 return ret; 1147 } 1148 1149 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, 1150 void __user *useraddr) 1151 { 1152 const struct ethtool_ops *ops = dev->ethtool_ops; 1153 struct ethtool_rxfh_param rxfh_dev = {}; 1154 struct netlink_ext_ack *extack = NULL; 1155 struct ethtool_rxnfc rx_rings; 1156 u32 user_size, i; 1157 int ret; 1158 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); 1159 1160 if (!ops->get_rxfh_indir_size || !ops->set_rxfh || 1161 !ops->get_rxnfc) 1162 return -EOPNOTSUPP; 1163 1164 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1165 if (rxfh_dev.indir_size == 0) 1166 return -EOPNOTSUPP; 1167 1168 if (copy_from_user(&user_size, 1169 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1170 sizeof(user_size))) 1171 return -EFAULT; 1172 1173 if (user_size != 0 && user_size != rxfh_dev.indir_size) 1174 return -EINVAL; 1175 1176 rxfh_dev.indir = kcalloc(rxfh_dev.indir_size, 1177 sizeof(rxfh_dev.indir[0]), GFP_USER); 1178 if (!rxfh_dev.indir) 1179 return -ENOMEM; 1180 1181 rx_rings.cmd = ETHTOOL_GRXRINGS; 1182 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1183 if (ret) 1184 goto out; 1185 1186 if (user_size == 0) { 1187 u32 *indir = rxfh_dev.indir; 1188 1189 for (i = 0; i < rxfh_dev.indir_size; i++) 1190 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1191 } else { 1192 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1193 useraddr + ringidx_offset, 1194 &rx_rings, 1195 rxfh_dev.indir_size); 1196 if (ret) 1197 goto out; 1198 } 1199 1200 rxfh_dev.hfunc = ETH_RSS_HASH_NO_CHANGE; 1201 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1202 if (ret) 1203 goto out; 1204 1205 /* indicate whether rxfh was set to default */ 1206 if (user_size == 0) 1207 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1208 else 1209 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1210 1211 out: 1212 kfree(rxfh_dev.indir); 1213 return ret; 1214 } 1215 1216 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, 1217 void __user *useraddr) 1218 { 1219 const struct ethtool_ops *ops = dev->ethtool_ops; 1220 struct ethtool_rxfh_param rxfh_dev = {}; 1221 u32 user_indir_size, user_key_size; 1222 struct ethtool_rxfh_context *ctx; 1223 struct ethtool_rxfh rxfh; 1224 u32 indir_bytes; 1225 u8 *rss_config; 1226 u32 total_size; 1227 int ret; 1228 1229 if (!ops->get_rxfh) 1230 return -EOPNOTSUPP; 1231 1232 if (ops->get_rxfh_indir_size) 1233 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1234 if (ops->get_rxfh_key_size) 1235 rxfh_dev.key_size = ops->get_rxfh_key_size(dev); 1236 1237 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1238 return -EFAULT; 1239 user_indir_size = rxfh.indir_size; 1240 user_key_size = rxfh.key_size; 1241 1242 /* Check that reserved fields are 0 for now */ 1243 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1244 return -EINVAL; 1245 /* Most drivers don't handle rss_context, check it's 0 as well */ 1246 if (rxfh.rss_context && !(ops->cap_rss_ctx_supported || 1247 ops->create_rxfh_context)) 1248 return -EOPNOTSUPP; 1249 1250 rxfh.indir_size = rxfh_dev.indir_size; 1251 rxfh.key_size = rxfh_dev.key_size; 1252 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) 1253 return -EFAULT; 1254 1255 if ((user_indir_size && user_indir_size != rxfh_dev.indir_size) || 1256 (user_key_size && user_key_size != rxfh_dev.key_size)) 1257 return -EINVAL; 1258 1259 indir_bytes = user_indir_size * sizeof(rxfh_dev.indir[0]); 1260 total_size = indir_bytes + user_key_size; 1261 rss_config = kzalloc(total_size, GFP_USER); 1262 if (!rss_config) 1263 return -ENOMEM; 1264 1265 if (user_indir_size) 1266 rxfh_dev.indir = (u32 *)rss_config; 1267 1268 if (user_key_size) 1269 rxfh_dev.key = rss_config + indir_bytes; 1270 1271 if (rxfh.rss_context) { 1272 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1273 if (!ctx) { 1274 ret = -ENOENT; 1275 goto out; 1276 } 1277 if (rxfh_dev.indir) 1278 memcpy(rxfh_dev.indir, ethtool_rxfh_context_indir(ctx), 1279 indir_bytes); 1280 if (!ops->rxfh_per_ctx_key) { 1281 rxfh_dev.key_size = 0; 1282 } else { 1283 if (rxfh_dev.key) 1284 memcpy(rxfh_dev.key, 1285 ethtool_rxfh_context_key(ctx), 1286 user_key_size); 1287 rxfh_dev.hfunc = ctx->hfunc; 1288 } 1289 rxfh_dev.input_xfrm = ctx->input_xfrm; 1290 ret = 0; 1291 } else { 1292 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh_dev); 1293 if (ret) 1294 goto out; 1295 } 1296 1297 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), 1298 &rxfh_dev.hfunc, sizeof(rxfh.hfunc))) { 1299 ret = -EFAULT; 1300 } else if (copy_to_user(useraddr + 1301 offsetof(struct ethtool_rxfh, input_xfrm), 1302 &rxfh_dev.input_xfrm, 1303 sizeof(rxfh.input_xfrm))) { 1304 ret = -EFAULT; 1305 } else if (copy_to_user(useraddr + 1306 offsetof(struct ethtool_rxfh, key_size), 1307 &rxfh_dev.key_size, 1308 sizeof(rxfh.key_size))) { 1309 ret = -EFAULT; 1310 } else if (copy_to_user(useraddr + 1311 offsetof(struct ethtool_rxfh, rss_config[0]), 1312 rss_config, total_size)) { 1313 ret = -EFAULT; 1314 } 1315 out: 1316 kfree(rss_config); 1317 1318 return ret; 1319 } 1320 1321 static struct ethtool_rxfh_context * 1322 ethtool_rxfh_ctx_alloc(const struct ethtool_ops *ops, 1323 u32 indir_size, u32 key_size) 1324 { 1325 size_t indir_bytes, flex_len, key_off, size; 1326 struct ethtool_rxfh_context *ctx; 1327 u32 priv_bytes, indir_max; 1328 u16 key_max; 1329 1330 key_max = max(key_size, ops->rxfh_key_space); 1331 indir_max = max(indir_size, ops->rxfh_indir_space); 1332 1333 priv_bytes = ALIGN(ops->rxfh_priv_size, sizeof(u32)); 1334 indir_bytes = array_size(indir_max, sizeof(u32)); 1335 1336 key_off = size_add(priv_bytes, indir_bytes); 1337 flex_len = size_add(key_off, key_max); 1338 size = struct_size_t(struct ethtool_rxfh_context, data, flex_len); 1339 1340 ctx = kzalloc(size, GFP_KERNEL_ACCOUNT); 1341 if (!ctx) 1342 return NULL; 1343 1344 ctx->indir_size = indir_size; 1345 ctx->key_size = key_size; 1346 ctx->key_off = key_off; 1347 ctx->priv_size = ops->rxfh_priv_size; 1348 1349 ctx->hfunc = ETH_RSS_HASH_NO_CHANGE; 1350 ctx->input_xfrm = RXH_XFRM_NO_CHANGE; 1351 1352 return ctx; 1353 } 1354 1355 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, 1356 void __user *useraddr) 1357 { 1358 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); 1359 const struct ethtool_ops *ops = dev->ethtool_ops; 1360 u32 dev_indir_size = 0, dev_key_size = 0, i; 1361 u32 user_indir_len = 0, indir_bytes = 0; 1362 struct ethtool_rxfh_param rxfh_dev = {}; 1363 struct ethtool_rxfh_context *ctx = NULL; 1364 struct netlink_ext_ack *extack = NULL; 1365 struct ethtool_rxnfc rx_rings; 1366 struct ethtool_rxfh rxfh; 1367 bool locked = false; /* dev->ethtool->rss_lock taken */ 1368 bool create = false; 1369 u8 *rss_config; 1370 int ret; 1371 1372 if (!ops->get_rxnfc || !ops->set_rxfh) 1373 return -EOPNOTSUPP; 1374 1375 if (ops->get_rxfh_indir_size) 1376 dev_indir_size = ops->get_rxfh_indir_size(dev); 1377 if (ops->get_rxfh_key_size) 1378 dev_key_size = ops->get_rxfh_key_size(dev); 1379 1380 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1381 return -EFAULT; 1382 1383 /* Check that reserved fields are 0 for now */ 1384 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1385 return -EINVAL; 1386 /* Most drivers don't handle rss_context, check it's 0 as well */ 1387 if (rxfh.rss_context && !(ops->cap_rss_ctx_supported || 1388 ops->create_rxfh_context)) 1389 return -EOPNOTSUPP; 1390 /* Check input data transformation capabilities */ 1391 if (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_SYM_XOR && 1392 rxfh.input_xfrm != RXH_XFRM_SYM_OR_XOR && 1393 rxfh.input_xfrm != RXH_XFRM_NO_CHANGE) 1394 return -EINVAL; 1395 if (rxfh.input_xfrm != RXH_XFRM_NO_CHANGE && 1396 rxfh.input_xfrm & ~ops->supported_input_xfrm) 1397 return -EOPNOTSUPP; 1398 create = rxfh.rss_context == ETH_RXFH_CONTEXT_ALLOC; 1399 1400 if ((rxfh.indir_size && 1401 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && 1402 rxfh.indir_size != dev_indir_size) || 1403 (rxfh.key_size && rxfh.key_size != dev_key_size)) 1404 return -EINVAL; 1405 1406 /* Must request at least one change: indir size, hash key, function 1407 * or input transformation. 1408 * There's no need for any of it in case of context creation. 1409 */ 1410 if (!create && 1411 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && 1412 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE && 1413 rxfh.input_xfrm == RXH_XFRM_NO_CHANGE)) 1414 return -EINVAL; 1415 1416 indir_bytes = dev_indir_size * sizeof(rxfh_dev.indir[0]); 1417 1418 /* Check settings which may be global rather than per RSS-context */ 1419 if (rxfh.rss_context && !ops->rxfh_per_ctx_key) 1420 if (rxfh.key_size || 1421 (rxfh.hfunc && rxfh.hfunc != ETH_RSS_HASH_NO_CHANGE) || 1422 (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_NO_CHANGE)) 1423 return -EOPNOTSUPP; 1424 1425 rss_config = kzalloc(indir_bytes + dev_key_size, GFP_USER); 1426 if (!rss_config) 1427 return -ENOMEM; 1428 1429 rx_rings.cmd = ETHTOOL_GRXRINGS; 1430 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1431 if (ret) 1432 goto out; 1433 1434 /* rxfh.indir_size == 0 means reset the indir table to default (master 1435 * context) or delete the context (other RSS contexts). 1436 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. 1437 */ 1438 if (rxfh.indir_size && 1439 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { 1440 user_indir_len = indir_bytes; 1441 rxfh_dev.indir = (u32 *)rss_config; 1442 rxfh_dev.indir_size = dev_indir_size; 1443 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1444 useraddr + rss_cfg_offset, 1445 &rx_rings, 1446 rxfh.indir_size); 1447 if (ret) 1448 goto out; 1449 } else if (rxfh.indir_size == 0) { 1450 if (rxfh.rss_context == 0) { 1451 u32 *indir; 1452 1453 rxfh_dev.indir = (u32 *)rss_config; 1454 rxfh_dev.indir_size = dev_indir_size; 1455 indir = rxfh_dev.indir; 1456 for (i = 0; i < dev_indir_size; i++) 1457 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1458 } else { 1459 rxfh_dev.rss_delete = true; 1460 } 1461 } 1462 1463 if (rxfh.key_size) { 1464 rxfh_dev.key_size = dev_key_size; 1465 rxfh_dev.key = rss_config + indir_bytes; 1466 if (copy_from_user(rxfh_dev.key, 1467 useraddr + rss_cfg_offset + user_indir_len, 1468 rxfh.key_size)) { 1469 ret = -EFAULT; 1470 goto out; 1471 } 1472 } 1473 1474 if (rxfh.rss_context) { 1475 mutex_lock(&dev->ethtool->rss_lock); 1476 locked = true; 1477 } 1478 1479 if (rxfh.rss_context && rxfh_dev.rss_delete) { 1480 ret = ethtool_check_rss_ctx_busy(dev, rxfh.rss_context); 1481 if (ret) 1482 goto out; 1483 } 1484 1485 if (create) { 1486 if (rxfh_dev.rss_delete) { 1487 ret = -EINVAL; 1488 goto out; 1489 } 1490 ctx = ethtool_rxfh_ctx_alloc(ops, dev_indir_size, dev_key_size); 1491 if (!ctx) { 1492 ret = -ENOMEM; 1493 goto out; 1494 } 1495 1496 if (ops->create_rxfh_context) { 1497 u32 limit = ops->rxfh_max_num_contexts ?: U32_MAX; 1498 u32 ctx_id; 1499 1500 /* driver uses new API, core allocates ID */ 1501 ret = xa_alloc(&dev->ethtool->rss_ctx, &ctx_id, ctx, 1502 XA_LIMIT(1, limit - 1), 1503 GFP_KERNEL_ACCOUNT); 1504 if (ret < 0) { 1505 kfree(ctx); 1506 goto out; 1507 } 1508 WARN_ON(!ctx_id); /* can't happen */ 1509 rxfh.rss_context = ctx_id; 1510 } 1511 } else if (rxfh.rss_context) { 1512 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1513 if (!ctx) { 1514 ret = -ENOENT; 1515 goto out; 1516 } 1517 } 1518 rxfh_dev.hfunc = rxfh.hfunc; 1519 rxfh_dev.rss_context = rxfh.rss_context; 1520 rxfh_dev.input_xfrm = rxfh.input_xfrm; 1521 1522 if (rxfh.rss_context && ops->create_rxfh_context) { 1523 if (create) { 1524 ret = ops->create_rxfh_context(dev, ctx, &rxfh_dev, 1525 extack); 1526 /* Make sure driver populates defaults */ 1527 WARN_ON_ONCE(!ret && !rxfh_dev.key && 1528 ops->rxfh_per_ctx_key && 1529 !memchr_inv(ethtool_rxfh_context_key(ctx), 1530 0, ctx->key_size)); 1531 } else if (rxfh_dev.rss_delete) { 1532 ret = ops->remove_rxfh_context(dev, ctx, 1533 rxfh.rss_context, 1534 extack); 1535 } else { 1536 ret = ops->modify_rxfh_context(dev, ctx, &rxfh_dev, 1537 extack); 1538 } 1539 } else { 1540 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1541 } 1542 if (ret) { 1543 if (create) { 1544 /* failed to create, free our new tracking entry */ 1545 if (ops->create_rxfh_context) 1546 xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context); 1547 kfree(ctx); 1548 } 1549 goto out; 1550 } 1551 1552 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), 1553 &rxfh_dev.rss_context, sizeof(rxfh_dev.rss_context))) 1554 ret = -EFAULT; 1555 1556 if (!rxfh_dev.rss_context) { 1557 /* indicate whether rxfh was set to default */ 1558 if (rxfh.indir_size == 0) 1559 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1560 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1561 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1562 } 1563 /* Update rss_ctx tracking */ 1564 if (create && !ops->create_rxfh_context) { 1565 /* driver uses old API, it chose context ID */ 1566 if (WARN_ON(xa_load(&dev->ethtool->rss_ctx, rxfh_dev.rss_context))) { 1567 /* context ID reused, our tracking is screwed */ 1568 kfree(ctx); 1569 goto out; 1570 } 1571 /* Allocate the exact ID the driver gave us */ 1572 if (xa_is_err(xa_store(&dev->ethtool->rss_ctx, rxfh_dev.rss_context, 1573 ctx, GFP_KERNEL))) { 1574 kfree(ctx); 1575 goto out; 1576 } 1577 1578 /* Fetch the defaults for the old API, in the new API drivers 1579 * should write defaults into ctx themselves. 1580 */ 1581 rxfh_dev.indir = (u32 *)rss_config; 1582 rxfh_dev.indir_size = dev_indir_size; 1583 1584 rxfh_dev.key = rss_config + indir_bytes; 1585 rxfh_dev.key_size = dev_key_size; 1586 1587 ret = ops->get_rxfh(dev, &rxfh_dev); 1588 if (WARN_ON(ret)) { 1589 xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context); 1590 kfree(ctx); 1591 goto out; 1592 } 1593 } 1594 if (rxfh_dev.rss_delete) { 1595 WARN_ON(xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context) != ctx); 1596 kfree(ctx); 1597 } else if (ctx) { 1598 if (rxfh_dev.indir) { 1599 for (i = 0; i < dev_indir_size; i++) 1600 ethtool_rxfh_context_indir(ctx)[i] = rxfh_dev.indir[i]; 1601 ctx->indir_configured = 1602 rxfh.indir_size && 1603 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE; 1604 } 1605 if (rxfh_dev.key) { 1606 memcpy(ethtool_rxfh_context_key(ctx), rxfh_dev.key, 1607 dev_key_size); 1608 ctx->key_configured = !!rxfh.key_size; 1609 } 1610 if (rxfh_dev.hfunc != ETH_RSS_HASH_NO_CHANGE) 1611 ctx->hfunc = rxfh_dev.hfunc; 1612 if (rxfh_dev.input_xfrm != RXH_XFRM_NO_CHANGE) 1613 ctx->input_xfrm = rxfh_dev.input_xfrm; 1614 } 1615 1616 out: 1617 if (locked) 1618 mutex_unlock(&dev->ethtool->rss_lock); 1619 kfree(rss_config); 1620 return ret; 1621 } 1622 1623 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) 1624 { 1625 struct ethtool_regs regs; 1626 const struct ethtool_ops *ops = dev->ethtool_ops; 1627 void *regbuf; 1628 int reglen, ret; 1629 1630 if (!ops->get_regs || !ops->get_regs_len) 1631 return -EOPNOTSUPP; 1632 1633 if (copy_from_user(®s, useraddr, sizeof(regs))) 1634 return -EFAULT; 1635 1636 reglen = ops->get_regs_len(dev); 1637 if (reglen <= 0) 1638 return reglen; 1639 1640 if (regs.len > reglen) 1641 regs.len = reglen; 1642 1643 regbuf = vzalloc(reglen); 1644 if (!regbuf) 1645 return -ENOMEM; 1646 1647 if (regs.len < reglen) 1648 reglen = regs.len; 1649 1650 ops->get_regs(dev, ®s, regbuf); 1651 1652 ret = -EFAULT; 1653 if (copy_to_user(useraddr, ®s, sizeof(regs))) 1654 goto out; 1655 useraddr += offsetof(struct ethtool_regs, data); 1656 if (copy_to_user(useraddr, regbuf, reglen)) 1657 goto out; 1658 ret = 0; 1659 1660 out: 1661 vfree(regbuf); 1662 return ret; 1663 } 1664 1665 static int ethtool_reset(struct net_device *dev, char __user *useraddr) 1666 { 1667 struct ethtool_value reset; 1668 int ret; 1669 1670 if (!dev->ethtool_ops->reset) 1671 return -EOPNOTSUPP; 1672 1673 if (dev->ethtool->module_fw_flash_in_progress) 1674 return -EBUSY; 1675 1676 if (copy_from_user(&reset, useraddr, sizeof(reset))) 1677 return -EFAULT; 1678 1679 ret = dev->ethtool_ops->reset(dev, &reset.data); 1680 if (ret) 1681 return ret; 1682 1683 if (copy_to_user(useraddr, &reset, sizeof(reset))) 1684 return -EFAULT; 1685 return 0; 1686 } 1687 1688 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) 1689 { 1690 struct ethtool_wolinfo wol; 1691 1692 if (!dev->ethtool_ops->get_wol) 1693 return -EOPNOTSUPP; 1694 1695 memset(&wol, 0, sizeof(struct ethtool_wolinfo)); 1696 wol.cmd = ETHTOOL_GWOL; 1697 dev->ethtool_ops->get_wol(dev, &wol); 1698 1699 if (copy_to_user(useraddr, &wol, sizeof(wol))) 1700 return -EFAULT; 1701 return 0; 1702 } 1703 1704 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) 1705 { 1706 struct ethtool_wolinfo wol, cur_wol; 1707 int ret; 1708 1709 if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol) 1710 return -EOPNOTSUPP; 1711 1712 memset(&cur_wol, 0, sizeof(struct ethtool_wolinfo)); 1713 cur_wol.cmd = ETHTOOL_GWOL; 1714 dev->ethtool_ops->get_wol(dev, &cur_wol); 1715 1716 if (copy_from_user(&wol, useraddr, sizeof(wol))) 1717 return -EFAULT; 1718 1719 if (wol.wolopts & ~cur_wol.supported) 1720 return -EINVAL; 1721 1722 if (wol.wolopts == cur_wol.wolopts && 1723 !memcmp(wol.sopass, cur_wol.sopass, sizeof(wol.sopass))) 1724 return 0; 1725 1726 ret = dev->ethtool_ops->set_wol(dev, &wol); 1727 if (ret) 1728 return ret; 1729 1730 dev->ethtool->wol_enabled = !!wol.wolopts; 1731 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL); 1732 1733 return 0; 1734 } 1735 1736 static void eee_to_keee(struct ethtool_keee *keee, 1737 const struct ethtool_eee *eee) 1738 { 1739 memset(keee, 0, sizeof(*keee)); 1740 1741 keee->eee_enabled = eee->eee_enabled; 1742 keee->tx_lpi_enabled = eee->tx_lpi_enabled; 1743 keee->tx_lpi_timer = eee->tx_lpi_timer; 1744 1745 ethtool_convert_legacy_u32_to_link_mode(keee->advertised, 1746 eee->advertised); 1747 } 1748 1749 static void keee_to_eee(struct ethtool_eee *eee, 1750 const struct ethtool_keee *keee) 1751 { 1752 bool overflow; 1753 1754 memset(eee, 0, sizeof(*eee)); 1755 1756 eee->eee_active = keee->eee_active; 1757 eee->eee_enabled = keee->eee_enabled; 1758 eee->tx_lpi_enabled = keee->tx_lpi_enabled; 1759 eee->tx_lpi_timer = keee->tx_lpi_timer; 1760 1761 overflow = !ethtool_convert_link_mode_to_legacy_u32(&eee->supported, 1762 keee->supported); 1763 ethtool_convert_link_mode_to_legacy_u32(&eee->advertised, 1764 keee->advertised); 1765 ethtool_convert_link_mode_to_legacy_u32(&eee->lp_advertised, 1766 keee->lp_advertised); 1767 if (overflow) 1768 pr_warn("Ethtool ioctl interface doesn't support passing EEE linkmodes beyond bit 32\n"); 1769 } 1770 1771 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) 1772 { 1773 struct ethtool_keee keee; 1774 struct ethtool_eee eee; 1775 int rc; 1776 1777 if (!dev->ethtool_ops->get_eee) 1778 return -EOPNOTSUPP; 1779 1780 memset(&keee, 0, sizeof(keee)); 1781 rc = dev->ethtool_ops->get_eee(dev, &keee); 1782 if (rc) 1783 return rc; 1784 1785 keee_to_eee(&eee, &keee); 1786 if (copy_to_user(useraddr, &eee, sizeof(eee))) 1787 return -EFAULT; 1788 1789 return 0; 1790 } 1791 1792 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) 1793 { 1794 struct ethtool_keee keee; 1795 struct ethtool_eee eee; 1796 int ret; 1797 1798 if (!dev->ethtool_ops->set_eee) 1799 return -EOPNOTSUPP; 1800 1801 if (copy_from_user(&eee, useraddr, sizeof(eee))) 1802 return -EFAULT; 1803 1804 eee_to_keee(&keee, &eee); 1805 ret = dev->ethtool_ops->set_eee(dev, &keee); 1806 if (!ret) 1807 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL); 1808 return ret; 1809 } 1810 1811 static int ethtool_nway_reset(struct net_device *dev) 1812 { 1813 if (!dev->ethtool_ops->nway_reset) 1814 return -EOPNOTSUPP; 1815 1816 return dev->ethtool_ops->nway_reset(dev); 1817 } 1818 1819 static int ethtool_get_link(struct net_device *dev, char __user *useraddr) 1820 { 1821 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; 1822 int link = __ethtool_get_link(dev); 1823 1824 if (link < 0) 1825 return link; 1826 1827 edata.data = link; 1828 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1829 return -EFAULT; 1830 return 0; 1831 } 1832 1833 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, 1834 int (*getter)(struct net_device *, 1835 struct ethtool_eeprom *, u8 *), 1836 u32 total_len) 1837 { 1838 struct ethtool_eeprom eeprom; 1839 void __user *userbuf = useraddr + sizeof(eeprom); 1840 u32 bytes_remaining; 1841 u8 *data; 1842 int ret = 0; 1843 1844 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1845 return -EFAULT; 1846 1847 /* Check for wrap and zero */ 1848 if (eeprom.offset + eeprom.len <= eeprom.offset) 1849 return -EINVAL; 1850 1851 /* Check for exceeding total eeprom len */ 1852 if (eeprom.offset + eeprom.len > total_len) 1853 return -EINVAL; 1854 1855 data = kzalloc(PAGE_SIZE, GFP_USER); 1856 if (!data) 1857 return -ENOMEM; 1858 1859 bytes_remaining = eeprom.len; 1860 while (bytes_remaining > 0) { 1861 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1862 1863 ret = getter(dev, &eeprom, data); 1864 if (ret) 1865 break; 1866 if (!eeprom.len) { 1867 ret = -EIO; 1868 break; 1869 } 1870 if (copy_to_user(userbuf, data, eeprom.len)) { 1871 ret = -EFAULT; 1872 break; 1873 } 1874 userbuf += eeprom.len; 1875 eeprom.offset += eeprom.len; 1876 bytes_remaining -= eeprom.len; 1877 } 1878 1879 eeprom.len = userbuf - (useraddr + sizeof(eeprom)); 1880 eeprom.offset -= eeprom.len; 1881 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) 1882 ret = -EFAULT; 1883 1884 kfree(data); 1885 return ret; 1886 } 1887 1888 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) 1889 { 1890 const struct ethtool_ops *ops = dev->ethtool_ops; 1891 1892 if (!ops->get_eeprom || !ops->get_eeprom_len || 1893 !ops->get_eeprom_len(dev)) 1894 return -EOPNOTSUPP; 1895 1896 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, 1897 ops->get_eeprom_len(dev)); 1898 } 1899 1900 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) 1901 { 1902 struct ethtool_eeprom eeprom; 1903 const struct ethtool_ops *ops = dev->ethtool_ops; 1904 void __user *userbuf = useraddr + sizeof(eeprom); 1905 u32 bytes_remaining; 1906 u8 *data; 1907 int ret = 0; 1908 1909 if (!ops->set_eeprom || !ops->get_eeprom_len || 1910 !ops->get_eeprom_len(dev)) 1911 return -EOPNOTSUPP; 1912 1913 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1914 return -EFAULT; 1915 1916 /* Check for wrap and zero */ 1917 if (eeprom.offset + eeprom.len <= eeprom.offset) 1918 return -EINVAL; 1919 1920 /* Check for exceeding total eeprom len */ 1921 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) 1922 return -EINVAL; 1923 1924 data = kzalloc(PAGE_SIZE, GFP_USER); 1925 if (!data) 1926 return -ENOMEM; 1927 1928 bytes_remaining = eeprom.len; 1929 while (bytes_remaining > 0) { 1930 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1931 1932 if (copy_from_user(data, userbuf, eeprom.len)) { 1933 ret = -EFAULT; 1934 break; 1935 } 1936 ret = ops->set_eeprom(dev, &eeprom, data); 1937 if (ret) 1938 break; 1939 userbuf += eeprom.len; 1940 eeprom.offset += eeprom.len; 1941 bytes_remaining -= eeprom.len; 1942 } 1943 1944 kfree(data); 1945 return ret; 1946 } 1947 1948 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, 1949 void __user *useraddr) 1950 { 1951 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 1952 struct kernel_ethtool_coalesce kernel_coalesce = {}; 1953 int ret; 1954 1955 if (!dev->ethtool_ops->get_coalesce) 1956 return -EOPNOTSUPP; 1957 1958 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 1959 NULL); 1960 if (ret) 1961 return ret; 1962 1963 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 1964 return -EFAULT; 1965 return 0; 1966 } 1967 1968 static bool 1969 ethtool_set_coalesce_supported(struct net_device *dev, 1970 struct ethtool_coalesce *coalesce) 1971 { 1972 u32 supported_params = dev->ethtool_ops->supported_coalesce_params; 1973 u32 nonzero_params = 0; 1974 1975 if (coalesce->rx_coalesce_usecs) 1976 nonzero_params |= ETHTOOL_COALESCE_RX_USECS; 1977 if (coalesce->rx_max_coalesced_frames) 1978 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; 1979 if (coalesce->rx_coalesce_usecs_irq) 1980 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; 1981 if (coalesce->rx_max_coalesced_frames_irq) 1982 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; 1983 if (coalesce->tx_coalesce_usecs) 1984 nonzero_params |= ETHTOOL_COALESCE_TX_USECS; 1985 if (coalesce->tx_max_coalesced_frames) 1986 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; 1987 if (coalesce->tx_coalesce_usecs_irq) 1988 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; 1989 if (coalesce->tx_max_coalesced_frames_irq) 1990 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; 1991 if (coalesce->stats_block_coalesce_usecs) 1992 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; 1993 if (coalesce->use_adaptive_rx_coalesce) 1994 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; 1995 if (coalesce->use_adaptive_tx_coalesce) 1996 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; 1997 if (coalesce->pkt_rate_low) 1998 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; 1999 if (coalesce->rx_coalesce_usecs_low) 2000 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; 2001 if (coalesce->rx_max_coalesced_frames_low) 2002 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; 2003 if (coalesce->tx_coalesce_usecs_low) 2004 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; 2005 if (coalesce->tx_max_coalesced_frames_low) 2006 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; 2007 if (coalesce->pkt_rate_high) 2008 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; 2009 if (coalesce->rx_coalesce_usecs_high) 2010 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; 2011 if (coalesce->rx_max_coalesced_frames_high) 2012 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; 2013 if (coalesce->tx_coalesce_usecs_high) 2014 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; 2015 if (coalesce->tx_max_coalesced_frames_high) 2016 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; 2017 if (coalesce->rate_sample_interval) 2018 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; 2019 2020 return (supported_params & nonzero_params) == nonzero_params; 2021 } 2022 2023 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, 2024 void __user *useraddr) 2025 { 2026 struct kernel_ethtool_coalesce kernel_coalesce = {}; 2027 struct ethtool_coalesce coalesce; 2028 int ret; 2029 2030 if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce) 2031 return -EOPNOTSUPP; 2032 2033 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 2034 NULL); 2035 if (ret) 2036 return ret; 2037 2038 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) 2039 return -EFAULT; 2040 2041 if (!ethtool_set_coalesce_supported(dev, &coalesce)) 2042 return -EOPNOTSUPP; 2043 2044 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, 2045 NULL); 2046 if (!ret) 2047 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL); 2048 return ret; 2049 } 2050 2051 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) 2052 { 2053 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; 2054 struct kernel_ethtool_ringparam kernel_ringparam = {}; 2055 2056 if (!dev->ethtool_ops->get_ringparam) 2057 return -EOPNOTSUPP; 2058 2059 dev->ethtool_ops->get_ringparam(dev, &ringparam, 2060 &kernel_ringparam, NULL); 2061 2062 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) 2063 return -EFAULT; 2064 return 0; 2065 } 2066 2067 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) 2068 { 2069 struct kernel_ethtool_ringparam kernel_ringparam; 2070 struct ethtool_ringparam ringparam, max; 2071 int ret; 2072 2073 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) 2074 return -EOPNOTSUPP; 2075 2076 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) 2077 return -EFAULT; 2078 2079 ethtool_ringparam_get_cfg(dev, &max, &kernel_ringparam, NULL); 2080 2081 /* ensure new ring parameters are within the maximums */ 2082 if (ringparam.rx_pending > max.rx_max_pending || 2083 ringparam.rx_mini_pending > max.rx_mini_max_pending || 2084 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || 2085 ringparam.tx_pending > max.tx_max_pending) 2086 return -EINVAL; 2087 2088 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, 2089 &kernel_ringparam, NULL); 2090 if (!ret) 2091 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL); 2092 return ret; 2093 } 2094 2095 static noinline_for_stack int ethtool_get_channels(struct net_device *dev, 2096 void __user *useraddr) 2097 { 2098 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; 2099 2100 if (!dev->ethtool_ops->get_channels) 2101 return -EOPNOTSUPP; 2102 2103 dev->ethtool_ops->get_channels(dev, &channels); 2104 2105 if (copy_to_user(useraddr, &channels, sizeof(channels))) 2106 return -EFAULT; 2107 return 0; 2108 } 2109 2110 static noinline_for_stack int ethtool_set_channels(struct net_device *dev, 2111 void __user *useraddr) 2112 { 2113 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; 2114 u16 from_channel, to_channel; 2115 unsigned int i; 2116 int ret; 2117 2118 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) 2119 return -EOPNOTSUPP; 2120 2121 if (copy_from_user(&channels, useraddr, sizeof(channels))) 2122 return -EFAULT; 2123 2124 dev->ethtool_ops->get_channels(dev, &curr); 2125 2126 if (channels.rx_count == curr.rx_count && 2127 channels.tx_count == curr.tx_count && 2128 channels.combined_count == curr.combined_count && 2129 channels.other_count == curr.other_count) 2130 return 0; 2131 2132 /* ensure new counts are within the maximums */ 2133 if (channels.rx_count > curr.max_rx || 2134 channels.tx_count > curr.max_tx || 2135 channels.combined_count > curr.max_combined || 2136 channels.other_count > curr.max_other) 2137 return -EINVAL; 2138 2139 /* ensure there is at least one RX and one TX channel */ 2140 if (!channels.combined_count && 2141 (!channels.rx_count || !channels.tx_count)) 2142 return -EINVAL; 2143 2144 ret = ethtool_check_max_channel(dev, channels, NULL); 2145 if (ret) 2146 return ret; 2147 2148 /* Disabling channels, query zero-copy AF_XDP sockets */ 2149 from_channel = channels.combined_count + 2150 min(channels.rx_count, channels.tx_count); 2151 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); 2152 for (i = from_channel; i < to_channel; i++) 2153 if (xsk_get_pool_from_qid(dev, i)) 2154 return -EINVAL; 2155 2156 ret = dev->ethtool_ops->set_channels(dev, &channels); 2157 if (!ret) 2158 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL); 2159 return ret; 2160 } 2161 2162 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) 2163 { 2164 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; 2165 2166 if (!dev->ethtool_ops->get_pauseparam) 2167 return -EOPNOTSUPP; 2168 2169 dev->ethtool_ops->get_pauseparam(dev, &pauseparam); 2170 2171 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) 2172 return -EFAULT; 2173 return 0; 2174 } 2175 2176 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) 2177 { 2178 struct ethtool_pauseparam pauseparam; 2179 int ret; 2180 2181 if (!dev->ethtool_ops->set_pauseparam) 2182 return -EOPNOTSUPP; 2183 2184 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) 2185 return -EFAULT; 2186 2187 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); 2188 if (!ret) 2189 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL); 2190 return ret; 2191 } 2192 2193 static int ethtool_self_test(struct net_device *dev, char __user *useraddr) 2194 { 2195 struct ethtool_test test; 2196 const struct ethtool_ops *ops = dev->ethtool_ops; 2197 u64 *data; 2198 int ret, test_len; 2199 2200 if (!ops->self_test || !ops->get_sset_count) 2201 return -EOPNOTSUPP; 2202 2203 test_len = ops->get_sset_count(dev, ETH_SS_TEST); 2204 if (test_len < 0) 2205 return test_len; 2206 WARN_ON(test_len == 0); 2207 2208 if (copy_from_user(&test, useraddr, sizeof(test))) 2209 return -EFAULT; 2210 2211 test.len = test_len; 2212 data = kcalloc(test_len, sizeof(u64), GFP_USER); 2213 if (!data) 2214 return -ENOMEM; 2215 2216 netif_testing_on(dev); 2217 ops->self_test(dev, &test, data); 2218 netif_testing_off(dev); 2219 2220 ret = -EFAULT; 2221 if (copy_to_user(useraddr, &test, sizeof(test))) 2222 goto out; 2223 useraddr += sizeof(test); 2224 if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) 2225 goto out; 2226 ret = 0; 2227 2228 out: 2229 kfree(data); 2230 return ret; 2231 } 2232 2233 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) 2234 { 2235 struct ethtool_gstrings gstrings; 2236 u8 *data; 2237 int ret; 2238 2239 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) 2240 return -EFAULT; 2241 2242 ret = __ethtool_get_sset_count(dev, gstrings.string_set); 2243 if (ret < 0) 2244 return ret; 2245 if (ret > S32_MAX / ETH_GSTRING_LEN) 2246 return -ENOMEM; 2247 WARN_ON_ONCE(!ret); 2248 2249 gstrings.len = ret; 2250 2251 if (gstrings.len) { 2252 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); 2253 if (!data) 2254 return -ENOMEM; 2255 2256 __ethtool_get_strings(dev, gstrings.string_set, data); 2257 } else { 2258 data = NULL; 2259 } 2260 2261 ret = -EFAULT; 2262 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) 2263 goto out; 2264 useraddr += sizeof(gstrings); 2265 if (gstrings.len && 2266 copy_to_user(useraddr, data, 2267 array_size(gstrings.len, ETH_GSTRING_LEN))) 2268 goto out; 2269 ret = 0; 2270 2271 out: 2272 vfree(data); 2273 return ret; 2274 } 2275 2276 __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) 2277 { 2278 va_list args; 2279 2280 va_start(args, fmt); 2281 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); 2282 va_end(args); 2283 2284 *data += ETH_GSTRING_LEN; 2285 } 2286 EXPORT_SYMBOL(ethtool_sprintf); 2287 2288 void ethtool_puts(u8 **data, const char *str) 2289 { 2290 strscpy(*data, str, ETH_GSTRING_LEN); 2291 *data += ETH_GSTRING_LEN; 2292 } 2293 EXPORT_SYMBOL(ethtool_puts); 2294 2295 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) 2296 { 2297 struct ethtool_value id; 2298 static bool busy; 2299 const struct ethtool_ops *ops = dev->ethtool_ops; 2300 netdevice_tracker dev_tracker; 2301 int rc; 2302 2303 if (!ops->set_phys_id) 2304 return -EOPNOTSUPP; 2305 2306 if (busy) 2307 return -EBUSY; 2308 2309 if (copy_from_user(&id, useraddr, sizeof(id))) 2310 return -EFAULT; 2311 2312 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); 2313 if (rc < 0) 2314 return rc; 2315 2316 /* Drop the RTNL lock while waiting, but prevent reentry or 2317 * removal of the device. 2318 */ 2319 busy = true; 2320 netdev_hold(dev, &dev_tracker, GFP_KERNEL); 2321 netdev_unlock_ops(dev); 2322 rtnl_unlock(); 2323 2324 if (rc == 0) { 2325 /* Driver will handle this itself */ 2326 schedule_timeout_interruptible( 2327 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); 2328 } else { 2329 /* Driver expects to be called at twice the frequency in rc */ 2330 int n = rc * 2, interval = HZ / n; 2331 u64 count = mul_u32_u32(n, id.data); 2332 u64 i = 0; 2333 2334 do { 2335 rtnl_lock(); 2336 netdev_lock_ops(dev); 2337 rc = ops->set_phys_id(dev, 2338 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); 2339 netdev_unlock_ops(dev); 2340 rtnl_unlock(); 2341 if (rc) 2342 break; 2343 schedule_timeout_interruptible(interval); 2344 } while (!signal_pending(current) && (!id.data || i < count)); 2345 } 2346 2347 rtnl_lock(); 2348 netdev_lock_ops(dev); 2349 netdev_put(dev, &dev_tracker); 2350 busy = false; 2351 2352 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); 2353 return rc; 2354 } 2355 2356 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) 2357 { 2358 struct ethtool_stats stats; 2359 const struct ethtool_ops *ops = dev->ethtool_ops; 2360 u64 *data; 2361 int ret, n_stats; 2362 2363 if (!ops->get_ethtool_stats || !ops->get_sset_count) 2364 return -EOPNOTSUPP; 2365 2366 n_stats = ops->get_sset_count(dev, ETH_SS_STATS); 2367 if (n_stats < 0) 2368 return n_stats; 2369 if (n_stats > S32_MAX / sizeof(u64)) 2370 return -ENOMEM; 2371 WARN_ON_ONCE(!n_stats); 2372 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2373 return -EFAULT; 2374 2375 stats.n_stats = n_stats; 2376 2377 if (n_stats) { 2378 data = vzalloc(array_size(n_stats, sizeof(u64))); 2379 if (!data) 2380 return -ENOMEM; 2381 ops->get_ethtool_stats(dev, &stats, data); 2382 } else { 2383 data = NULL; 2384 } 2385 2386 ret = -EFAULT; 2387 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2388 goto out; 2389 useraddr += sizeof(stats); 2390 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) 2391 goto out; 2392 ret = 0; 2393 2394 out: 2395 vfree(data); 2396 return ret; 2397 } 2398 2399 static int ethtool_vzalloc_stats_array(int n_stats, u64 **data) 2400 { 2401 if (n_stats < 0) 2402 return n_stats; 2403 if (n_stats > S32_MAX / sizeof(u64)) 2404 return -ENOMEM; 2405 if (WARN_ON_ONCE(!n_stats)) 2406 return -EOPNOTSUPP; 2407 2408 *data = vzalloc(array_size(n_stats, sizeof(u64))); 2409 if (!*data) 2410 return -ENOMEM; 2411 2412 return 0; 2413 } 2414 2415 static int ethtool_get_phy_stats_phydev(struct phy_device *phydev, 2416 struct ethtool_stats *stats, 2417 u64 **data) 2418 { 2419 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 2420 int n_stats, ret; 2421 2422 if (!phy_ops || !phy_ops->get_sset_count || !phy_ops->get_stats) 2423 return -EOPNOTSUPP; 2424 2425 n_stats = phy_ops->get_sset_count(phydev); 2426 2427 ret = ethtool_vzalloc_stats_array(n_stats, data); 2428 if (ret) 2429 return ret; 2430 2431 stats->n_stats = n_stats; 2432 return phy_ops->get_stats(phydev, stats, *data); 2433 } 2434 2435 static int ethtool_get_phy_stats_ethtool(struct net_device *dev, 2436 struct ethtool_stats *stats, 2437 u64 **data) 2438 { 2439 const struct ethtool_ops *ops = dev->ethtool_ops; 2440 int n_stats, ret; 2441 2442 if (!ops || !ops->get_sset_count || !ops->get_ethtool_phy_stats) 2443 return -EOPNOTSUPP; 2444 2445 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); 2446 2447 ret = ethtool_vzalloc_stats_array(n_stats, data); 2448 if (ret) 2449 return ret; 2450 2451 stats->n_stats = n_stats; 2452 ops->get_ethtool_phy_stats(dev, stats, *data); 2453 2454 return 0; 2455 } 2456 2457 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) 2458 { 2459 struct phy_device *phydev = dev->phydev; 2460 struct ethtool_stats stats; 2461 u64 *data = NULL; 2462 int ret = -EOPNOTSUPP; 2463 2464 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2465 return -EFAULT; 2466 2467 if (phydev) 2468 ret = ethtool_get_phy_stats_phydev(phydev, &stats, &data); 2469 2470 if (ret == -EOPNOTSUPP) 2471 ret = ethtool_get_phy_stats_ethtool(dev, &stats, &data); 2472 2473 if (ret) 2474 goto out; 2475 2476 if (copy_to_user(useraddr, &stats, sizeof(stats))) { 2477 ret = -EFAULT; 2478 goto out; 2479 } 2480 2481 useraddr += sizeof(stats); 2482 if (copy_to_user(useraddr, data, array_size(stats.n_stats, sizeof(u64)))) 2483 ret = -EFAULT; 2484 2485 out: 2486 vfree(data); 2487 return ret; 2488 } 2489 2490 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) 2491 { 2492 struct ethtool_perm_addr epaddr; 2493 2494 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) 2495 return -EFAULT; 2496 2497 if (epaddr.size < dev->addr_len) 2498 return -ETOOSMALL; 2499 epaddr.size = dev->addr_len; 2500 2501 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) 2502 return -EFAULT; 2503 useraddr += sizeof(epaddr); 2504 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) 2505 return -EFAULT; 2506 return 0; 2507 } 2508 2509 static int ethtool_get_value(struct net_device *dev, char __user *useraddr, 2510 u32 cmd, u32 (*actor)(struct net_device *)) 2511 { 2512 struct ethtool_value edata = { .cmd = cmd }; 2513 2514 if (!actor) 2515 return -EOPNOTSUPP; 2516 2517 edata.data = actor(dev); 2518 2519 if (copy_to_user(useraddr, &edata, sizeof(edata))) 2520 return -EFAULT; 2521 return 0; 2522 } 2523 2524 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, 2525 void (*actor)(struct net_device *, u32)) 2526 { 2527 struct ethtool_value edata; 2528 2529 if (!actor) 2530 return -EOPNOTSUPP; 2531 2532 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2533 return -EFAULT; 2534 2535 actor(dev, edata.data); 2536 return 0; 2537 } 2538 2539 static int ethtool_set_value(struct net_device *dev, char __user *useraddr, 2540 int (*actor)(struct net_device *, u32)) 2541 { 2542 struct ethtool_value edata; 2543 2544 if (!actor) 2545 return -EOPNOTSUPP; 2546 2547 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2548 return -EFAULT; 2549 2550 return actor(dev, edata.data); 2551 } 2552 2553 static int 2554 ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) 2555 { 2556 if (!dev->ethtool_ops->flash_device) { 2557 req->devlink = netdev_to_devlink_get(dev); 2558 return 0; 2559 } 2560 2561 return dev->ethtool_ops->flash_device(dev, &req->efl); 2562 } 2563 2564 static int ethtool_set_dump(struct net_device *dev, 2565 void __user *useraddr) 2566 { 2567 struct ethtool_dump dump; 2568 2569 if (!dev->ethtool_ops->set_dump) 2570 return -EOPNOTSUPP; 2571 2572 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2573 return -EFAULT; 2574 2575 return dev->ethtool_ops->set_dump(dev, &dump); 2576 } 2577 2578 static int ethtool_get_dump_flag(struct net_device *dev, 2579 void __user *useraddr) 2580 { 2581 int ret; 2582 struct ethtool_dump dump; 2583 const struct ethtool_ops *ops = dev->ethtool_ops; 2584 2585 if (!ops->get_dump_flag) 2586 return -EOPNOTSUPP; 2587 2588 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2589 return -EFAULT; 2590 2591 ret = ops->get_dump_flag(dev, &dump); 2592 if (ret) 2593 return ret; 2594 2595 if (copy_to_user(useraddr, &dump, sizeof(dump))) 2596 return -EFAULT; 2597 return 0; 2598 } 2599 2600 static int ethtool_get_dump_data(struct net_device *dev, 2601 void __user *useraddr) 2602 { 2603 int ret; 2604 __u32 len; 2605 struct ethtool_dump dump, tmp; 2606 const struct ethtool_ops *ops = dev->ethtool_ops; 2607 void *data = NULL; 2608 2609 if (!ops->get_dump_data || !ops->get_dump_flag) 2610 return -EOPNOTSUPP; 2611 2612 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2613 return -EFAULT; 2614 2615 memset(&tmp, 0, sizeof(tmp)); 2616 tmp.cmd = ETHTOOL_GET_DUMP_FLAG; 2617 ret = ops->get_dump_flag(dev, &tmp); 2618 if (ret) 2619 return ret; 2620 2621 len = min(tmp.len, dump.len); 2622 if (!len) 2623 return -EFAULT; 2624 2625 /* Don't ever let the driver think there's more space available 2626 * than it requested with .get_dump_flag(). 2627 */ 2628 dump.len = len; 2629 2630 /* Always allocate enough space to hold the whole thing so that the 2631 * driver does not need to check the length and bother with partial 2632 * dumping. 2633 */ 2634 data = vzalloc(tmp.len); 2635 if (!data) 2636 return -ENOMEM; 2637 ret = ops->get_dump_data(dev, &dump, data); 2638 if (ret) 2639 goto out; 2640 2641 /* There are two sane possibilities: 2642 * 1. The driver's .get_dump_data() does not touch dump.len. 2643 * 2. Or it may set dump.len to how much it really writes, which 2644 * should be tmp.len (or len if it can do a partial dump). 2645 * In any case respond to userspace with the actual length of data 2646 * it's receiving. 2647 */ 2648 WARN_ON(dump.len != len && dump.len != tmp.len); 2649 dump.len = len; 2650 2651 if (copy_to_user(useraddr, &dump, sizeof(dump))) { 2652 ret = -EFAULT; 2653 goto out; 2654 } 2655 useraddr += offsetof(struct ethtool_dump, data); 2656 if (copy_to_user(useraddr, data, len)) 2657 ret = -EFAULT; 2658 out: 2659 vfree(data); 2660 return ret; 2661 } 2662 2663 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) 2664 { 2665 struct kernel_ethtool_ts_info kernel_info; 2666 struct ethtool_ts_info info = {}; 2667 int err; 2668 2669 err = __ethtool_get_ts_info(dev, &kernel_info); 2670 if (err) 2671 return err; 2672 2673 info.cmd = kernel_info.cmd; 2674 info.so_timestamping = kernel_info.so_timestamping; 2675 info.phc_index = kernel_info.phc_index; 2676 info.tx_types = kernel_info.tx_types; 2677 info.rx_filters = kernel_info.rx_filters; 2678 2679 if (copy_to_user(useraddr, &info, sizeof(info))) 2680 return -EFAULT; 2681 2682 return 0; 2683 } 2684 2685 int ethtool_get_module_info_call(struct net_device *dev, 2686 struct ethtool_modinfo *modinfo) 2687 { 2688 const struct ethtool_ops *ops = dev->ethtool_ops; 2689 struct phy_device *phydev = dev->phydev; 2690 2691 if (dev->ethtool->module_fw_flash_in_progress) 2692 return -EBUSY; 2693 2694 if (dev->sfp_bus) 2695 return sfp_get_module_info(dev->sfp_bus, modinfo); 2696 2697 if (phydev && phydev->drv && phydev->drv->module_info) 2698 return phydev->drv->module_info(phydev, modinfo); 2699 2700 if (ops->get_module_info) 2701 return ops->get_module_info(dev, modinfo); 2702 2703 return -EOPNOTSUPP; 2704 } 2705 2706 static int ethtool_get_module_info(struct net_device *dev, 2707 void __user *useraddr) 2708 { 2709 int ret; 2710 struct ethtool_modinfo modinfo; 2711 2712 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) 2713 return -EFAULT; 2714 2715 ret = ethtool_get_module_info_call(dev, &modinfo); 2716 if (ret) 2717 return ret; 2718 2719 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) 2720 return -EFAULT; 2721 2722 return 0; 2723 } 2724 2725 int ethtool_get_module_eeprom_call(struct net_device *dev, 2726 struct ethtool_eeprom *ee, u8 *data) 2727 { 2728 const struct ethtool_ops *ops = dev->ethtool_ops; 2729 struct phy_device *phydev = dev->phydev; 2730 2731 if (dev->ethtool->module_fw_flash_in_progress) 2732 return -EBUSY; 2733 2734 if (dev->sfp_bus) 2735 return sfp_get_module_eeprom(dev->sfp_bus, ee, data); 2736 2737 if (phydev && phydev->drv && phydev->drv->module_eeprom) 2738 return phydev->drv->module_eeprom(phydev, ee, data); 2739 2740 if (ops->get_module_eeprom) 2741 return ops->get_module_eeprom(dev, ee, data); 2742 2743 return -EOPNOTSUPP; 2744 } 2745 2746 static int ethtool_get_module_eeprom(struct net_device *dev, 2747 void __user *useraddr) 2748 { 2749 int ret; 2750 struct ethtool_modinfo modinfo; 2751 2752 ret = ethtool_get_module_info_call(dev, &modinfo); 2753 if (ret) 2754 return ret; 2755 2756 return ethtool_get_any_eeprom(dev, useraddr, 2757 ethtool_get_module_eeprom_call, 2758 modinfo.eeprom_len); 2759 } 2760 2761 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) 2762 { 2763 switch (tuna->id) { 2764 case ETHTOOL_RX_COPYBREAK: 2765 case ETHTOOL_TX_COPYBREAK: 2766 case ETHTOOL_TX_COPYBREAK_BUF_SIZE: 2767 if (tuna->len != sizeof(u32) || 2768 tuna->type_id != ETHTOOL_TUNABLE_U32) 2769 return -EINVAL; 2770 break; 2771 case ETHTOOL_PFC_PREVENTION_TOUT: 2772 if (tuna->len != sizeof(u16) || 2773 tuna->type_id != ETHTOOL_TUNABLE_U16) 2774 return -EINVAL; 2775 break; 2776 default: 2777 return -EINVAL; 2778 } 2779 2780 return 0; 2781 } 2782 2783 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) 2784 { 2785 int ret; 2786 struct ethtool_tunable tuna; 2787 const struct ethtool_ops *ops = dev->ethtool_ops; 2788 void *data; 2789 2790 if (!ops->get_tunable) 2791 return -EOPNOTSUPP; 2792 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2793 return -EFAULT; 2794 ret = ethtool_tunable_valid(&tuna); 2795 if (ret) 2796 return ret; 2797 data = kzalloc(tuna.len, GFP_USER); 2798 if (!data) 2799 return -ENOMEM; 2800 ret = ops->get_tunable(dev, &tuna, data); 2801 if (ret) 2802 goto out; 2803 useraddr += sizeof(tuna); 2804 ret = -EFAULT; 2805 if (copy_to_user(useraddr, data, tuna.len)) 2806 goto out; 2807 ret = 0; 2808 2809 out: 2810 kfree(data); 2811 return ret; 2812 } 2813 2814 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) 2815 { 2816 int ret; 2817 struct ethtool_tunable tuna; 2818 const struct ethtool_ops *ops = dev->ethtool_ops; 2819 void *data; 2820 2821 if (!ops->set_tunable) 2822 return -EOPNOTSUPP; 2823 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2824 return -EFAULT; 2825 ret = ethtool_tunable_valid(&tuna); 2826 if (ret) 2827 return ret; 2828 useraddr += sizeof(tuna); 2829 data = memdup_user(useraddr, tuna.len); 2830 if (IS_ERR(data)) 2831 return PTR_ERR(data); 2832 ret = ops->set_tunable(dev, &tuna, data); 2833 2834 kfree(data); 2835 return ret; 2836 } 2837 2838 static noinline_for_stack int 2839 ethtool_get_per_queue_coalesce(struct net_device *dev, 2840 void __user *useraddr, 2841 struct ethtool_per_queue_op *per_queue_opt) 2842 { 2843 u32 bit; 2844 int ret; 2845 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2846 2847 if (!dev->ethtool_ops->get_per_queue_coalesce) 2848 return -EOPNOTSUPP; 2849 2850 useraddr += sizeof(*per_queue_opt); 2851 2852 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, 2853 MAX_NUM_QUEUE); 2854 2855 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2856 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2857 2858 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); 2859 if (ret != 0) 2860 return ret; 2861 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2862 return -EFAULT; 2863 useraddr += sizeof(coalesce); 2864 } 2865 2866 return 0; 2867 } 2868 2869 static noinline_for_stack int 2870 ethtool_set_per_queue_coalesce(struct net_device *dev, 2871 void __user *useraddr, 2872 struct ethtool_per_queue_op *per_queue_opt) 2873 { 2874 u32 bit; 2875 int i, ret = 0; 2876 int n_queue; 2877 struct ethtool_coalesce *backup = NULL, *tmp = NULL; 2878 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2879 2880 if ((!dev->ethtool_ops->set_per_queue_coalesce) || 2881 (!dev->ethtool_ops->get_per_queue_coalesce)) 2882 return -EOPNOTSUPP; 2883 2884 useraddr += sizeof(*per_queue_opt); 2885 2886 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); 2887 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); 2888 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); 2889 if (!backup) 2890 return -ENOMEM; 2891 2892 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2893 struct ethtool_coalesce coalesce; 2894 2895 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); 2896 if (ret != 0) 2897 goto roll_back; 2898 2899 tmp++; 2900 2901 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { 2902 ret = -EFAULT; 2903 goto roll_back; 2904 } 2905 2906 if (!ethtool_set_coalesce_supported(dev, &coalesce)) { 2907 ret = -EOPNOTSUPP; 2908 goto roll_back; 2909 } 2910 2911 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); 2912 if (ret != 0) 2913 goto roll_back; 2914 2915 useraddr += sizeof(coalesce); 2916 } 2917 2918 roll_back: 2919 if (ret != 0) { 2920 tmp = backup; 2921 for_each_set_bit(i, queue_mask, bit) { 2922 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); 2923 tmp++; 2924 } 2925 } 2926 kfree(backup); 2927 2928 return ret; 2929 } 2930 2931 static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, 2932 void __user *useraddr, u32 sub_cmd) 2933 { 2934 struct ethtool_per_queue_op per_queue_opt; 2935 2936 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) 2937 return -EFAULT; 2938 2939 if (per_queue_opt.sub_command != sub_cmd) 2940 return -EINVAL; 2941 2942 switch (per_queue_opt.sub_command) { 2943 case ETHTOOL_GCOALESCE: 2944 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2945 case ETHTOOL_SCOALESCE: 2946 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2947 default: 2948 return -EOPNOTSUPP; 2949 } 2950 } 2951 2952 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) 2953 { 2954 switch (tuna->id) { 2955 case ETHTOOL_PHY_DOWNSHIFT: 2956 case ETHTOOL_PHY_FAST_LINK_DOWN: 2957 if (tuna->len != sizeof(u8) || 2958 tuna->type_id != ETHTOOL_TUNABLE_U8) 2959 return -EINVAL; 2960 break; 2961 case ETHTOOL_PHY_EDPD: 2962 if (tuna->len != sizeof(u16) || 2963 tuna->type_id != ETHTOOL_TUNABLE_U16) 2964 return -EINVAL; 2965 break; 2966 default: 2967 return -EINVAL; 2968 } 2969 2970 return 0; 2971 } 2972 2973 static int get_phy_tunable(struct net_device *dev, void __user *useraddr) 2974 { 2975 struct phy_device *phydev = dev->phydev; 2976 struct ethtool_tunable tuna; 2977 bool phy_drv_tunable; 2978 void *data; 2979 int ret; 2980 2981 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 2982 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) 2983 return -EOPNOTSUPP; 2984 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2985 return -EFAULT; 2986 ret = ethtool_phy_tunable_valid(&tuna); 2987 if (ret) 2988 return ret; 2989 data = kzalloc(tuna.len, GFP_USER); 2990 if (!data) 2991 return -ENOMEM; 2992 if (phy_drv_tunable) { 2993 mutex_lock(&phydev->lock); 2994 ret = phydev->drv->get_tunable(phydev, &tuna, data); 2995 mutex_unlock(&phydev->lock); 2996 } else { 2997 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); 2998 } 2999 if (ret) 3000 goto out; 3001 useraddr += sizeof(tuna); 3002 ret = -EFAULT; 3003 if (copy_to_user(useraddr, data, tuna.len)) 3004 goto out; 3005 ret = 0; 3006 3007 out: 3008 kfree(data); 3009 return ret; 3010 } 3011 3012 static int set_phy_tunable(struct net_device *dev, void __user *useraddr) 3013 { 3014 struct phy_device *phydev = dev->phydev; 3015 struct ethtool_tunable tuna; 3016 bool phy_drv_tunable; 3017 void *data; 3018 int ret; 3019 3020 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 3021 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) 3022 return -EOPNOTSUPP; 3023 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 3024 return -EFAULT; 3025 ret = ethtool_phy_tunable_valid(&tuna); 3026 if (ret) 3027 return ret; 3028 useraddr += sizeof(tuna); 3029 data = memdup_user(useraddr, tuna.len); 3030 if (IS_ERR(data)) 3031 return PTR_ERR(data); 3032 if (phy_drv_tunable) { 3033 mutex_lock(&phydev->lock); 3034 ret = phydev->drv->set_tunable(phydev, &tuna, data); 3035 mutex_unlock(&phydev->lock); 3036 } else { 3037 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); 3038 } 3039 3040 kfree(data); 3041 return ret; 3042 } 3043 3044 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) 3045 { 3046 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; 3047 int rc; 3048 3049 if (!dev->ethtool_ops->get_fecparam) 3050 return -EOPNOTSUPP; 3051 3052 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); 3053 if (rc) 3054 return rc; 3055 3056 if (WARN_ON_ONCE(fecparam.reserved)) 3057 fecparam.reserved = 0; 3058 3059 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) 3060 return -EFAULT; 3061 return 0; 3062 } 3063 3064 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) 3065 { 3066 struct ethtool_fecparam fecparam; 3067 3068 if (!dev->ethtool_ops->set_fecparam) 3069 return -EOPNOTSUPP; 3070 3071 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) 3072 return -EFAULT; 3073 3074 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) 3075 return -EINVAL; 3076 3077 fecparam.active_fec = 0; 3078 fecparam.reserved = 0; 3079 3080 return dev->ethtool_ops->set_fecparam(dev, &fecparam); 3081 } 3082 3083 /* The main entry point in this file. Called from net/core/dev_ioctl.c */ 3084 3085 static int 3086 __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, 3087 u32 ethcmd, struct ethtool_devlink_compat *devlink_state) 3088 { 3089 struct net_device *dev; 3090 u32 sub_cmd; 3091 int rc; 3092 netdev_features_t old_features; 3093 3094 dev = __dev_get_by_name(net, ifr->ifr_name); 3095 if (!dev) 3096 return -ENODEV; 3097 3098 if (ethcmd == ETHTOOL_PERQUEUE) { 3099 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) 3100 return -EFAULT; 3101 } else { 3102 sub_cmd = ethcmd; 3103 } 3104 /* Allow some commands to be done by anyone */ 3105 switch (sub_cmd) { 3106 case ETHTOOL_GSET: 3107 case ETHTOOL_GDRVINFO: 3108 case ETHTOOL_GMSGLVL: 3109 case ETHTOOL_GLINK: 3110 case ETHTOOL_GCOALESCE: 3111 case ETHTOOL_GRINGPARAM: 3112 case ETHTOOL_GPAUSEPARAM: 3113 case ETHTOOL_GRXCSUM: 3114 case ETHTOOL_GTXCSUM: 3115 case ETHTOOL_GSG: 3116 case ETHTOOL_GSSET_INFO: 3117 case ETHTOOL_GSTRINGS: 3118 case ETHTOOL_GSTATS: 3119 case ETHTOOL_GPHYSTATS: 3120 case ETHTOOL_GTSO: 3121 case ETHTOOL_GPERMADDR: 3122 case ETHTOOL_GUFO: 3123 case ETHTOOL_GGSO: 3124 case ETHTOOL_GGRO: 3125 case ETHTOOL_GFLAGS: 3126 case ETHTOOL_GPFLAGS: 3127 case ETHTOOL_GRXFH: 3128 case ETHTOOL_GRXRINGS: 3129 case ETHTOOL_GRXCLSRLCNT: 3130 case ETHTOOL_GRXCLSRULE: 3131 case ETHTOOL_GRXCLSRLALL: 3132 case ETHTOOL_GRXFHINDIR: 3133 case ETHTOOL_GRSSH: 3134 case ETHTOOL_GFEATURES: 3135 case ETHTOOL_GCHANNELS: 3136 case ETHTOOL_GET_TS_INFO: 3137 case ETHTOOL_GEEE: 3138 case ETHTOOL_GTUNABLE: 3139 case ETHTOOL_PHY_GTUNABLE: 3140 case ETHTOOL_GLINKSETTINGS: 3141 case ETHTOOL_GFECPARAM: 3142 break; 3143 default: 3144 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 3145 return -EPERM; 3146 } 3147 3148 netdev_lock_ops(dev); 3149 if (dev->dev.parent) 3150 pm_runtime_get_sync(dev->dev.parent); 3151 3152 if (!netif_device_present(dev)) { 3153 rc = -ENODEV; 3154 goto out; 3155 } 3156 3157 if (dev->ethtool_ops->begin) { 3158 rc = dev->ethtool_ops->begin(dev); 3159 if (rc < 0) 3160 goto out; 3161 } 3162 old_features = dev->features; 3163 3164 switch (ethcmd) { 3165 case ETHTOOL_GSET: 3166 rc = ethtool_get_settings(dev, useraddr); 3167 break; 3168 case ETHTOOL_SSET: 3169 rc = ethtool_set_settings(dev, useraddr); 3170 break; 3171 case ETHTOOL_GDRVINFO: 3172 rc = ethtool_get_drvinfo(dev, devlink_state); 3173 break; 3174 case ETHTOOL_GREGS: 3175 rc = ethtool_get_regs(dev, useraddr); 3176 break; 3177 case ETHTOOL_GWOL: 3178 rc = ethtool_get_wol(dev, useraddr); 3179 break; 3180 case ETHTOOL_SWOL: 3181 rc = ethtool_set_wol(dev, useraddr); 3182 break; 3183 case ETHTOOL_GMSGLVL: 3184 rc = ethtool_get_value(dev, useraddr, ethcmd, 3185 dev->ethtool_ops->get_msglevel); 3186 break; 3187 case ETHTOOL_SMSGLVL: 3188 rc = ethtool_set_value_void(dev, useraddr, 3189 dev->ethtool_ops->set_msglevel); 3190 if (!rc) 3191 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL); 3192 break; 3193 case ETHTOOL_GEEE: 3194 rc = ethtool_get_eee(dev, useraddr); 3195 break; 3196 case ETHTOOL_SEEE: 3197 rc = ethtool_set_eee(dev, useraddr); 3198 break; 3199 case ETHTOOL_NWAY_RST: 3200 rc = ethtool_nway_reset(dev); 3201 break; 3202 case ETHTOOL_GLINK: 3203 rc = ethtool_get_link(dev, useraddr); 3204 break; 3205 case ETHTOOL_GEEPROM: 3206 rc = ethtool_get_eeprom(dev, useraddr); 3207 break; 3208 case ETHTOOL_SEEPROM: 3209 rc = ethtool_set_eeprom(dev, useraddr); 3210 break; 3211 case ETHTOOL_GCOALESCE: 3212 rc = ethtool_get_coalesce(dev, useraddr); 3213 break; 3214 case ETHTOOL_SCOALESCE: 3215 rc = ethtool_set_coalesce(dev, useraddr); 3216 break; 3217 case ETHTOOL_GRINGPARAM: 3218 rc = ethtool_get_ringparam(dev, useraddr); 3219 break; 3220 case ETHTOOL_SRINGPARAM: 3221 rc = ethtool_set_ringparam(dev, useraddr); 3222 break; 3223 case ETHTOOL_GPAUSEPARAM: 3224 rc = ethtool_get_pauseparam(dev, useraddr); 3225 break; 3226 case ETHTOOL_SPAUSEPARAM: 3227 rc = ethtool_set_pauseparam(dev, useraddr); 3228 break; 3229 case ETHTOOL_TEST: 3230 rc = ethtool_self_test(dev, useraddr); 3231 break; 3232 case ETHTOOL_GSTRINGS: 3233 rc = ethtool_get_strings(dev, useraddr); 3234 break; 3235 case ETHTOOL_PHYS_ID: 3236 rc = ethtool_phys_id(dev, useraddr); 3237 break; 3238 case ETHTOOL_GSTATS: 3239 rc = ethtool_get_stats(dev, useraddr); 3240 break; 3241 case ETHTOOL_GPERMADDR: 3242 rc = ethtool_get_perm_addr(dev, useraddr); 3243 break; 3244 case ETHTOOL_GFLAGS: 3245 rc = ethtool_get_value(dev, useraddr, ethcmd, 3246 __ethtool_get_flags); 3247 break; 3248 case ETHTOOL_SFLAGS: 3249 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); 3250 break; 3251 case ETHTOOL_GPFLAGS: 3252 rc = ethtool_get_value(dev, useraddr, ethcmd, 3253 dev->ethtool_ops->get_priv_flags); 3254 if (!rc) 3255 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL); 3256 break; 3257 case ETHTOOL_SPFLAGS: 3258 rc = ethtool_set_value(dev, useraddr, 3259 dev->ethtool_ops->set_priv_flags); 3260 break; 3261 case ETHTOOL_GRXFH: 3262 case ETHTOOL_GRXRINGS: 3263 case ETHTOOL_GRXCLSRLCNT: 3264 case ETHTOOL_GRXCLSRULE: 3265 case ETHTOOL_GRXCLSRLALL: 3266 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); 3267 break; 3268 case ETHTOOL_SRXFH: 3269 case ETHTOOL_SRXCLSRLDEL: 3270 case ETHTOOL_SRXCLSRLINS: 3271 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); 3272 break; 3273 case ETHTOOL_FLASHDEV: 3274 rc = ethtool_flash_device(dev, devlink_state); 3275 break; 3276 case ETHTOOL_RESET: 3277 rc = ethtool_reset(dev, useraddr); 3278 break; 3279 case ETHTOOL_GSSET_INFO: 3280 rc = ethtool_get_sset_info(dev, useraddr); 3281 break; 3282 case ETHTOOL_GRXFHINDIR: 3283 rc = ethtool_get_rxfh_indir(dev, useraddr); 3284 break; 3285 case ETHTOOL_SRXFHINDIR: 3286 rc = ethtool_set_rxfh_indir(dev, useraddr); 3287 break; 3288 case ETHTOOL_GRSSH: 3289 rc = ethtool_get_rxfh(dev, useraddr); 3290 break; 3291 case ETHTOOL_SRSSH: 3292 rc = ethtool_set_rxfh(dev, useraddr); 3293 break; 3294 case ETHTOOL_GFEATURES: 3295 rc = ethtool_get_features(dev, useraddr); 3296 break; 3297 case ETHTOOL_SFEATURES: 3298 rc = ethtool_set_features(dev, useraddr); 3299 break; 3300 case ETHTOOL_GTXCSUM: 3301 case ETHTOOL_GRXCSUM: 3302 case ETHTOOL_GSG: 3303 case ETHTOOL_GTSO: 3304 case ETHTOOL_GGSO: 3305 case ETHTOOL_GGRO: 3306 rc = ethtool_get_one_feature(dev, useraddr, ethcmd); 3307 break; 3308 case ETHTOOL_STXCSUM: 3309 case ETHTOOL_SRXCSUM: 3310 case ETHTOOL_SSG: 3311 case ETHTOOL_STSO: 3312 case ETHTOOL_SGSO: 3313 case ETHTOOL_SGRO: 3314 rc = ethtool_set_one_feature(dev, useraddr, ethcmd); 3315 break; 3316 case ETHTOOL_GCHANNELS: 3317 rc = ethtool_get_channels(dev, useraddr); 3318 break; 3319 case ETHTOOL_SCHANNELS: 3320 rc = ethtool_set_channels(dev, useraddr); 3321 break; 3322 case ETHTOOL_SET_DUMP: 3323 rc = ethtool_set_dump(dev, useraddr); 3324 break; 3325 case ETHTOOL_GET_DUMP_FLAG: 3326 rc = ethtool_get_dump_flag(dev, useraddr); 3327 break; 3328 case ETHTOOL_GET_DUMP_DATA: 3329 rc = ethtool_get_dump_data(dev, useraddr); 3330 break; 3331 case ETHTOOL_GET_TS_INFO: 3332 rc = ethtool_get_ts_info(dev, useraddr); 3333 break; 3334 case ETHTOOL_GMODULEINFO: 3335 rc = ethtool_get_module_info(dev, useraddr); 3336 break; 3337 case ETHTOOL_GMODULEEEPROM: 3338 rc = ethtool_get_module_eeprom(dev, useraddr); 3339 break; 3340 case ETHTOOL_GTUNABLE: 3341 rc = ethtool_get_tunable(dev, useraddr); 3342 break; 3343 case ETHTOOL_STUNABLE: 3344 rc = ethtool_set_tunable(dev, useraddr); 3345 break; 3346 case ETHTOOL_GPHYSTATS: 3347 rc = ethtool_get_phy_stats(dev, useraddr); 3348 break; 3349 case ETHTOOL_PERQUEUE: 3350 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); 3351 break; 3352 case ETHTOOL_GLINKSETTINGS: 3353 rc = ethtool_get_link_ksettings(dev, useraddr); 3354 break; 3355 case ETHTOOL_SLINKSETTINGS: 3356 rc = ethtool_set_link_ksettings(dev, useraddr); 3357 break; 3358 case ETHTOOL_PHY_GTUNABLE: 3359 rc = get_phy_tunable(dev, useraddr); 3360 break; 3361 case ETHTOOL_PHY_STUNABLE: 3362 rc = set_phy_tunable(dev, useraddr); 3363 break; 3364 case ETHTOOL_GFECPARAM: 3365 rc = ethtool_get_fecparam(dev, useraddr); 3366 break; 3367 case ETHTOOL_SFECPARAM: 3368 rc = ethtool_set_fecparam(dev, useraddr); 3369 break; 3370 default: 3371 rc = -EOPNOTSUPP; 3372 } 3373 3374 if (dev->ethtool_ops->complete) 3375 dev->ethtool_ops->complete(dev); 3376 3377 if (old_features != dev->features) 3378 netdev_features_change(dev); 3379 out: 3380 if (dev->dev.parent) 3381 pm_runtime_put(dev->dev.parent); 3382 netdev_unlock_ops(dev); 3383 3384 return rc; 3385 } 3386 3387 int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) 3388 { 3389 struct ethtool_devlink_compat *state; 3390 u32 ethcmd; 3391 int rc; 3392 3393 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) 3394 return -EFAULT; 3395 3396 state = kzalloc(sizeof(*state), GFP_KERNEL); 3397 if (!state) 3398 return -ENOMEM; 3399 3400 switch (ethcmd) { 3401 case ETHTOOL_FLASHDEV: 3402 if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { 3403 rc = -EFAULT; 3404 goto exit_free; 3405 } 3406 state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; 3407 break; 3408 } 3409 3410 rtnl_lock(); 3411 rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); 3412 rtnl_unlock(); 3413 if (rc) 3414 goto exit_free; 3415 3416 switch (ethcmd) { 3417 case ETHTOOL_FLASHDEV: 3418 if (state->devlink) 3419 rc = devlink_compat_flash_update(state->devlink, 3420 state->efl.data); 3421 break; 3422 case ETHTOOL_GDRVINFO: 3423 if (state->devlink) 3424 devlink_compat_running_version(state->devlink, 3425 state->info.fw_version, 3426 sizeof(state->info.fw_version)); 3427 if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { 3428 rc = -EFAULT; 3429 goto exit_free; 3430 } 3431 break; 3432 } 3433 3434 exit_free: 3435 if (state->devlink) 3436 devlink_put(state->devlink); 3437 kfree(state); 3438 return rc; 3439 } 3440 3441 struct ethtool_rx_flow_key { 3442 struct flow_dissector_key_basic basic; 3443 union { 3444 struct flow_dissector_key_ipv4_addrs ipv4; 3445 struct flow_dissector_key_ipv6_addrs ipv6; 3446 }; 3447 struct flow_dissector_key_ports tp; 3448 struct flow_dissector_key_ip ip; 3449 struct flow_dissector_key_vlan vlan; 3450 struct flow_dissector_key_eth_addrs eth_addrs; 3451 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ 3452 3453 struct ethtool_rx_flow_match { 3454 struct flow_dissector dissector; 3455 struct ethtool_rx_flow_key key; 3456 struct ethtool_rx_flow_key mask; 3457 }; 3458 3459 struct ethtool_rx_flow_rule * 3460 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) 3461 { 3462 const struct ethtool_rx_flow_spec *fs = input->fs; 3463 struct ethtool_rx_flow_match *match; 3464 struct ethtool_rx_flow_rule *flow; 3465 struct flow_action_entry *act; 3466 3467 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + 3468 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); 3469 if (!flow) 3470 return ERR_PTR(-ENOMEM); 3471 3472 /* ethtool_rx supports only one single action per rule. */ 3473 flow->rule = flow_rule_alloc(1); 3474 if (!flow->rule) { 3475 kfree(flow); 3476 return ERR_PTR(-ENOMEM); 3477 } 3478 3479 match = (struct ethtool_rx_flow_match *)flow->priv; 3480 flow->rule->match.dissector = &match->dissector; 3481 flow->rule->match.mask = &match->mask; 3482 flow->rule->match.key = &match->key; 3483 3484 match->mask.basic.n_proto = htons(0xffff); 3485 3486 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3487 case ETHER_FLOW: { 3488 const struct ethhdr *ether_spec, *ether_m_spec; 3489 3490 ether_spec = &fs->h_u.ether_spec; 3491 ether_m_spec = &fs->m_u.ether_spec; 3492 3493 if (!is_zero_ether_addr(ether_m_spec->h_source)) { 3494 ether_addr_copy(match->key.eth_addrs.src, 3495 ether_spec->h_source); 3496 ether_addr_copy(match->mask.eth_addrs.src, 3497 ether_m_spec->h_source); 3498 } 3499 if (!is_zero_ether_addr(ether_m_spec->h_dest)) { 3500 ether_addr_copy(match->key.eth_addrs.dst, 3501 ether_spec->h_dest); 3502 ether_addr_copy(match->mask.eth_addrs.dst, 3503 ether_m_spec->h_dest); 3504 } 3505 if (ether_m_spec->h_proto) { 3506 match->key.basic.n_proto = ether_spec->h_proto; 3507 match->mask.basic.n_proto = ether_m_spec->h_proto; 3508 } 3509 } 3510 break; 3511 case TCP_V4_FLOW: 3512 case UDP_V4_FLOW: { 3513 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; 3514 3515 match->key.basic.n_proto = htons(ETH_P_IP); 3516 3517 v4_spec = &fs->h_u.tcp_ip4_spec; 3518 v4_m_spec = &fs->m_u.tcp_ip4_spec; 3519 3520 if (v4_m_spec->ip4src) { 3521 match->key.ipv4.src = v4_spec->ip4src; 3522 match->mask.ipv4.src = v4_m_spec->ip4src; 3523 } 3524 if (v4_m_spec->ip4dst) { 3525 match->key.ipv4.dst = v4_spec->ip4dst; 3526 match->mask.ipv4.dst = v4_m_spec->ip4dst; 3527 } 3528 if (v4_m_spec->ip4src || 3529 v4_m_spec->ip4dst) { 3530 match->dissector.used_keys |= 3531 BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS); 3532 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = 3533 offsetof(struct ethtool_rx_flow_key, ipv4); 3534 } 3535 if (v4_m_spec->psrc) { 3536 match->key.tp.src = v4_spec->psrc; 3537 match->mask.tp.src = v4_m_spec->psrc; 3538 } 3539 if (v4_m_spec->pdst) { 3540 match->key.tp.dst = v4_spec->pdst; 3541 match->mask.tp.dst = v4_m_spec->pdst; 3542 } 3543 if (v4_m_spec->psrc || 3544 v4_m_spec->pdst) { 3545 match->dissector.used_keys |= 3546 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3547 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3548 offsetof(struct ethtool_rx_flow_key, tp); 3549 } 3550 if (v4_m_spec->tos) { 3551 match->key.ip.tos = v4_spec->tos; 3552 match->mask.ip.tos = v4_m_spec->tos; 3553 match->dissector.used_keys |= 3554 BIT(FLOW_DISSECTOR_KEY_IP); 3555 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3556 offsetof(struct ethtool_rx_flow_key, ip); 3557 } 3558 } 3559 break; 3560 case TCP_V6_FLOW: 3561 case UDP_V6_FLOW: { 3562 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; 3563 3564 match->key.basic.n_proto = htons(ETH_P_IPV6); 3565 3566 v6_spec = &fs->h_u.tcp_ip6_spec; 3567 v6_m_spec = &fs->m_u.tcp_ip6_spec; 3568 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) { 3569 memcpy(&match->key.ipv6.src, v6_spec->ip6src, 3570 sizeof(match->key.ipv6.src)); 3571 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, 3572 sizeof(match->mask.ipv6.src)); 3573 } 3574 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3575 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, 3576 sizeof(match->key.ipv6.dst)); 3577 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, 3578 sizeof(match->mask.ipv6.dst)); 3579 } 3580 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) || 3581 !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3582 match->dissector.used_keys |= 3583 BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS); 3584 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = 3585 offsetof(struct ethtool_rx_flow_key, ipv6); 3586 } 3587 if (v6_m_spec->psrc) { 3588 match->key.tp.src = v6_spec->psrc; 3589 match->mask.tp.src = v6_m_spec->psrc; 3590 } 3591 if (v6_m_spec->pdst) { 3592 match->key.tp.dst = v6_spec->pdst; 3593 match->mask.tp.dst = v6_m_spec->pdst; 3594 } 3595 if (v6_m_spec->psrc || 3596 v6_m_spec->pdst) { 3597 match->dissector.used_keys |= 3598 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3599 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3600 offsetof(struct ethtool_rx_flow_key, tp); 3601 } 3602 if (v6_m_spec->tclass) { 3603 match->key.ip.tos = v6_spec->tclass; 3604 match->mask.ip.tos = v6_m_spec->tclass; 3605 match->dissector.used_keys |= 3606 BIT_ULL(FLOW_DISSECTOR_KEY_IP); 3607 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3608 offsetof(struct ethtool_rx_flow_key, ip); 3609 } 3610 } 3611 break; 3612 default: 3613 ethtool_rx_flow_rule_destroy(flow); 3614 return ERR_PTR(-EINVAL); 3615 } 3616 3617 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3618 case TCP_V4_FLOW: 3619 case TCP_V6_FLOW: 3620 match->key.basic.ip_proto = IPPROTO_TCP; 3621 match->mask.basic.ip_proto = 0xff; 3622 break; 3623 case UDP_V4_FLOW: 3624 case UDP_V6_FLOW: 3625 match->key.basic.ip_proto = IPPROTO_UDP; 3626 match->mask.basic.ip_proto = 0xff; 3627 break; 3628 } 3629 3630 match->dissector.used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_BASIC); 3631 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = 3632 offsetof(struct ethtool_rx_flow_key, basic); 3633 3634 if (fs->flow_type & FLOW_EXT) { 3635 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3636 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3637 3638 if (ext_m_spec->vlan_etype) { 3639 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; 3640 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; 3641 } 3642 3643 if (ext_m_spec->vlan_tci) { 3644 match->key.vlan.vlan_id = 3645 ntohs(ext_h_spec->vlan_tci) & 0x0fff; 3646 match->mask.vlan.vlan_id = 3647 ntohs(ext_m_spec->vlan_tci) & 0x0fff; 3648 3649 match->key.vlan.vlan_dei = 3650 !!(ext_h_spec->vlan_tci & htons(0x1000)); 3651 match->mask.vlan.vlan_dei = 3652 !!(ext_m_spec->vlan_tci & htons(0x1000)); 3653 3654 match->key.vlan.vlan_priority = 3655 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; 3656 match->mask.vlan.vlan_priority = 3657 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; 3658 } 3659 3660 if (ext_m_spec->vlan_etype || 3661 ext_m_spec->vlan_tci) { 3662 match->dissector.used_keys |= 3663 BIT_ULL(FLOW_DISSECTOR_KEY_VLAN); 3664 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = 3665 offsetof(struct ethtool_rx_flow_key, vlan); 3666 } 3667 } 3668 if (fs->flow_type & FLOW_MAC_EXT) { 3669 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3670 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3671 3672 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, 3673 ETH_ALEN); 3674 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, 3675 ETH_ALEN); 3676 3677 match->dissector.used_keys |= 3678 BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS); 3679 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = 3680 offsetof(struct ethtool_rx_flow_key, eth_addrs); 3681 } 3682 3683 act = &flow->rule->action.entries[0]; 3684 switch (fs->ring_cookie) { 3685 case RX_CLS_FLOW_DISC: 3686 act->id = FLOW_ACTION_DROP; 3687 break; 3688 case RX_CLS_FLOW_WAKE: 3689 act->id = FLOW_ACTION_WAKE; 3690 break; 3691 default: 3692 act->id = FLOW_ACTION_QUEUE; 3693 if (fs->flow_type & FLOW_RSS) 3694 act->queue.ctx = input->rss_ctx; 3695 3696 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); 3697 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); 3698 break; 3699 } 3700 3701 return flow; 3702 } 3703 EXPORT_SYMBOL(ethtool_rx_flow_rule_create); 3704 3705 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) 3706 { 3707 kfree(flow->rule); 3708 kfree(flow); 3709 } 3710 EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); 3711