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