1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * net/core/ethtool.c - Ethtool ioctl handler 4 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx> 5 * 6 * This file is where we call all the ethtool_ops commands to get 7 * the information ethtool needs. 8 */ 9 10 #include <linux/compat.h> 11 #include <linux/etherdevice.h> 12 #include <linux/module.h> 13 #include <linux/types.h> 14 #include <linux/capability.h> 15 #include <linux/errno.h> 16 #include <linux/ethtool.h> 17 #include <linux/netdevice.h> 18 #include <linux/net_tstamp.h> 19 #include <linux/phy.h> 20 #include <linux/bitops.h> 21 #include <linux/uaccess.h> 22 #include <linux/vmalloc.h> 23 #include <linux/sfp.h> 24 #include <linux/slab.h> 25 #include <linux/rtnetlink.h> 26 #include <linux/sched/signal.h> 27 #include <linux/net.h> 28 #include <linux/pm_runtime.h> 29 #include <linux/utsname.h> 30 #include <linux/ethtool_netlink.h> 31 #include <net/devlink.h> 32 #include <net/ipv6.h> 33 #include <net/flow_offload.h> 34 #include <net/netdev_lock.h> 35 #include <net/netdev_queues.h> 36 37 #include "common.h" 38 39 /* State held across locks and calls for commands which have devlink fallback */ 40 struct ethtool_devlink_compat { 41 struct devlink *devlink; 42 union { 43 struct ethtool_flash efl; 44 struct ethtool_drvinfo info; 45 }; 46 }; 47 48 static struct devlink *netdev_to_devlink_get(struct net_device *dev) 49 { 50 if (!dev->devlink_port) 51 return NULL; 52 return devlink_try_get(dev->devlink_port->devlink); 53 } 54 55 /* 56 * Some useful ethtool_ops methods that're device independent. 57 * If we find that all drivers want to do the same thing here, 58 * we can turn these into dev_() function calls. 59 */ 60 61 u32 ethtool_op_get_link(struct net_device *dev) 62 { 63 /* Synchronize carrier state with link watch, see also rtnl_getlink() */ 64 __linkwatch_sync_dev(dev); 65 66 return netif_carrier_ok(dev) ? 1 : 0; 67 } 68 EXPORT_SYMBOL(ethtool_op_get_link); 69 70 int ethtool_op_get_ts_info(struct net_device *dev, 71 struct kernel_ethtool_ts_info *info) 72 { 73 info->so_timestamping = 74 SOF_TIMESTAMPING_TX_SOFTWARE | 75 SOF_TIMESTAMPING_RX_SOFTWARE | 76 SOF_TIMESTAMPING_SOFTWARE; 77 info->phc_index = -1; 78 return 0; 79 } 80 EXPORT_SYMBOL(ethtool_op_get_ts_info); 81 82 /* Handlers for each ethtool command */ 83 84 static int ethtool_get_features(struct net_device *dev, void __user *useraddr) 85 { 86 struct ethtool_gfeatures cmd = { 87 .cmd = ETHTOOL_GFEATURES, 88 .size = ETHTOOL_DEV_FEATURE_WORDS, 89 }; 90 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 91 u32 __user *sizeaddr; 92 u32 copy_size; 93 int i; 94 95 /* in case feature bits run out again */ 96 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); 97 98 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 99 features[i].available = (u32)(dev->hw_features >> (32 * i)); 100 features[i].requested = (u32)(dev->wanted_features >> (32 * i)); 101 features[i].active = (u32)(dev->features >> (32 * i)); 102 features[i].never_changed = 103 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); 104 } 105 106 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); 107 if (get_user(copy_size, sizeaddr)) 108 return -EFAULT; 109 110 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) 111 copy_size = ETHTOOL_DEV_FEATURE_WORDS; 112 113 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 114 return -EFAULT; 115 useraddr += sizeof(cmd); 116 if (copy_to_user(useraddr, features, 117 array_size(copy_size, sizeof(*features)))) 118 return -EFAULT; 119 120 return 0; 121 } 122 123 static int ethtool_set_features(struct net_device *dev, void __user *useraddr) 124 { 125 struct ethtool_sfeatures cmd; 126 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 127 netdev_features_t wanted = 0, valid = 0; 128 int i, ret = 0; 129 130 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 131 return -EFAULT; 132 useraddr += sizeof(cmd); 133 134 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) 135 return -EINVAL; 136 137 if (copy_from_user(features, useraddr, sizeof(features))) 138 return -EFAULT; 139 140 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 141 valid |= (netdev_features_t)features[i].valid << (32 * i); 142 wanted |= (netdev_features_t)features[i].requested << (32 * i); 143 } 144 145 if (valid & ~NETIF_F_ETHTOOL_BITS) 146 return -EINVAL; 147 148 if (valid & ~dev->hw_features) { 149 valid &= dev->hw_features; 150 ret |= ETHTOOL_F_UNSUPPORTED; 151 } 152 153 dev->wanted_features &= ~valid; 154 dev->wanted_features |= wanted & valid; 155 __netdev_update_features(dev); 156 157 if ((dev->wanted_features ^ dev->features) & valid) 158 ret |= ETHTOOL_F_WISH; 159 160 return ret; 161 } 162 163 static int __ethtool_get_sset_count(struct net_device *dev, int sset) 164 { 165 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 166 const struct ethtool_ops *ops = dev->ethtool_ops; 167 168 if (sset == ETH_SS_FEATURES) 169 return ARRAY_SIZE(netdev_features_strings); 170 171 if (sset == ETH_SS_RSS_HASH_FUNCS) 172 return ARRAY_SIZE(rss_hash_func_strings); 173 174 if (sset == ETH_SS_TUNABLES) 175 return ARRAY_SIZE(tunable_strings); 176 177 if (sset == ETH_SS_PHY_TUNABLES) 178 return ARRAY_SIZE(phy_tunable_strings); 179 180 if (sset == ETH_SS_PHY_STATS && dev->phydev && 181 !ops->get_ethtool_phy_stats && 182 phy_ops && phy_ops->get_sset_count) 183 return phy_ops->get_sset_count(dev->phydev); 184 185 if (sset == ETH_SS_LINK_MODES) 186 return __ETHTOOL_LINK_MODE_MASK_NBITS; 187 188 if (ops->get_sset_count && ops->get_strings) 189 return ops->get_sset_count(dev, sset); 190 else 191 return -EOPNOTSUPP; 192 } 193 194 static void __ethtool_get_strings(struct net_device *dev, 195 u32 stringset, u8 *data) 196 { 197 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 198 const struct ethtool_ops *ops = dev->ethtool_ops; 199 200 if (stringset == ETH_SS_FEATURES) 201 memcpy(data, netdev_features_strings, 202 sizeof(netdev_features_strings)); 203 else if (stringset == ETH_SS_RSS_HASH_FUNCS) 204 memcpy(data, rss_hash_func_strings, 205 sizeof(rss_hash_func_strings)); 206 else if (stringset == ETH_SS_TUNABLES) 207 memcpy(data, tunable_strings, sizeof(tunable_strings)); 208 else if (stringset == ETH_SS_PHY_TUNABLES) 209 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); 210 else if (stringset == ETH_SS_PHY_STATS && dev->phydev && 211 !ops->get_ethtool_phy_stats && phy_ops && 212 phy_ops->get_strings) 213 phy_ops->get_strings(dev->phydev, data); 214 else if (stringset == ETH_SS_LINK_MODES) 215 memcpy(data, link_mode_names, 216 __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN); 217 else 218 /* ops->get_strings is valid because checked earlier */ 219 ops->get_strings(dev, stringset, data); 220 } 221 222 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) 223 { 224 /* feature masks of legacy discrete ethtool ops */ 225 226 switch (eth_cmd) { 227 case ETHTOOL_GTXCSUM: 228 case ETHTOOL_STXCSUM: 229 return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC | 230 NETIF_F_SCTP_CRC; 231 case ETHTOOL_GRXCSUM: 232 case ETHTOOL_SRXCSUM: 233 return NETIF_F_RXCSUM; 234 case ETHTOOL_GSG: 235 case ETHTOOL_SSG: 236 return NETIF_F_SG | NETIF_F_FRAGLIST; 237 case ETHTOOL_GTSO: 238 case ETHTOOL_STSO: 239 return NETIF_F_ALL_TSO; 240 case ETHTOOL_GGSO: 241 case ETHTOOL_SGSO: 242 return NETIF_F_GSO; 243 case ETHTOOL_GGRO: 244 case ETHTOOL_SGRO: 245 return NETIF_F_GRO; 246 default: 247 BUG(); 248 } 249 } 250 251 static int ethtool_get_one_feature(struct net_device *dev, 252 char __user *useraddr, u32 ethcmd) 253 { 254 netdev_features_t mask = ethtool_get_feature_mask(ethcmd); 255 struct ethtool_value edata = { 256 .cmd = ethcmd, 257 .data = !!(dev->features & mask), 258 }; 259 260 if (copy_to_user(useraddr, &edata, sizeof(edata))) 261 return -EFAULT; 262 return 0; 263 } 264 265 static int ethtool_set_one_feature(struct net_device *dev, 266 void __user *useraddr, u32 ethcmd) 267 { 268 struct ethtool_value edata; 269 netdev_features_t mask; 270 271 if (copy_from_user(&edata, useraddr, sizeof(edata))) 272 return -EFAULT; 273 274 mask = ethtool_get_feature_mask(ethcmd); 275 mask &= dev->hw_features; 276 if (!mask) 277 return -EOPNOTSUPP; 278 279 if (edata.data) 280 dev->wanted_features |= mask; 281 else 282 dev->wanted_features &= ~mask; 283 284 __netdev_update_features(dev); 285 286 return 0; 287 } 288 289 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ 290 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) 291 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ 292 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ 293 NETIF_F_RXHASH) 294 295 static u32 __ethtool_get_flags(struct net_device *dev) 296 { 297 u32 flags = 0; 298 299 if (dev->features & NETIF_F_LRO) 300 flags |= ETH_FLAG_LRO; 301 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 302 flags |= ETH_FLAG_RXVLAN; 303 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) 304 flags |= ETH_FLAG_TXVLAN; 305 if (dev->features & NETIF_F_NTUPLE) 306 flags |= ETH_FLAG_NTUPLE; 307 if (dev->features & NETIF_F_RXHASH) 308 flags |= ETH_FLAG_RXHASH; 309 310 return flags; 311 } 312 313 static int __ethtool_set_flags(struct net_device *dev, u32 data) 314 { 315 netdev_features_t features = 0, changed; 316 317 if (data & ~ETH_ALL_FLAGS) 318 return -EINVAL; 319 320 if (data & ETH_FLAG_LRO) 321 features |= NETIF_F_LRO; 322 if (data & ETH_FLAG_RXVLAN) 323 features |= NETIF_F_HW_VLAN_CTAG_RX; 324 if (data & ETH_FLAG_TXVLAN) 325 features |= NETIF_F_HW_VLAN_CTAG_TX; 326 if (data & ETH_FLAG_NTUPLE) 327 features |= NETIF_F_NTUPLE; 328 if (data & ETH_FLAG_RXHASH) 329 features |= NETIF_F_RXHASH; 330 331 /* allow changing only bits set in hw_features */ 332 changed = (features ^ dev->features) & ETH_ALL_FEATURES; 333 if (changed & ~dev->hw_features) 334 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; 335 336 dev->wanted_features = 337 (dev->wanted_features & ~changed) | (features & changed); 338 339 __netdev_update_features(dev); 340 341 return 0; 342 } 343 344 /* Given two link masks, AND them together and save the result in dst. */ 345 void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, 346 struct ethtool_link_ksettings *src) 347 { 348 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); 349 unsigned int idx = 0; 350 351 for (; idx < size; idx++) { 352 dst->link_modes.supported[idx] &= 353 src->link_modes.supported[idx]; 354 dst->link_modes.advertising[idx] &= 355 src->link_modes.advertising[idx]; 356 } 357 } 358 EXPORT_SYMBOL(ethtool_intersect_link_masks); 359 360 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, 361 u32 legacy_u32) 362 { 363 linkmode_zero(dst); 364 dst[0] = legacy_u32; 365 } 366 EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); 367 368 /* return false if src had higher bits set. lower bits always updated. */ 369 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, 370 const unsigned long *src) 371 { 372 *legacy_u32 = src[0]; 373 return find_next_bit(src, __ETHTOOL_LINK_MODE_MASK_NBITS, 32) == 374 __ETHTOOL_LINK_MODE_MASK_NBITS; 375 } 376 EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); 377 378 /* return false if ksettings link modes had higher bits 379 * set. legacy_settings always updated (best effort) 380 */ 381 static bool 382 convert_link_ksettings_to_legacy_settings( 383 struct ethtool_cmd *legacy_settings, 384 const struct ethtool_link_ksettings *link_ksettings) 385 { 386 bool retval = true; 387 388 memset(legacy_settings, 0, sizeof(*legacy_settings)); 389 /* this also clears the deprecated fields in legacy structure: 390 * __u8 transceiver; 391 * __u32 maxtxpkt; 392 * __u32 maxrxpkt; 393 */ 394 395 retval &= ethtool_convert_link_mode_to_legacy_u32( 396 &legacy_settings->supported, 397 link_ksettings->link_modes.supported); 398 retval &= ethtool_convert_link_mode_to_legacy_u32( 399 &legacy_settings->advertising, 400 link_ksettings->link_modes.advertising); 401 retval &= ethtool_convert_link_mode_to_legacy_u32( 402 &legacy_settings->lp_advertising, 403 link_ksettings->link_modes.lp_advertising); 404 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); 405 legacy_settings->duplex 406 = link_ksettings->base.duplex; 407 legacy_settings->port 408 = link_ksettings->base.port; 409 legacy_settings->phy_address 410 = link_ksettings->base.phy_address; 411 legacy_settings->autoneg 412 = link_ksettings->base.autoneg; 413 legacy_settings->mdio_support 414 = link_ksettings->base.mdio_support; 415 legacy_settings->eth_tp_mdix 416 = link_ksettings->base.eth_tp_mdix; 417 legacy_settings->eth_tp_mdix_ctrl 418 = link_ksettings->base.eth_tp_mdix_ctrl; 419 legacy_settings->transceiver 420 = link_ksettings->base.transceiver; 421 return retval; 422 } 423 424 /* number of 32-bit words to store the user's link mode bitmaps */ 425 #define __ETHTOOL_LINK_MODE_MASK_NU32 \ 426 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) 427 428 /* layout of the struct passed from/to userland */ 429 struct ethtool_link_usettings { 430 struct ethtool_link_settings base; 431 struct { 432 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; 433 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 434 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 435 } link_modes; 436 }; 437 438 /* Internal kernel helper to query a device ethtool_link_settings. */ 439 int __ethtool_get_link_ksettings(struct net_device *dev, 440 struct ethtool_link_ksettings *link_ksettings) 441 { 442 ASSERT_RTNL(); 443 444 if (!dev->ethtool_ops->get_link_ksettings) 445 return -EOPNOTSUPP; 446 447 if (!netif_device_present(dev)) 448 return -ENODEV; 449 450 memset(link_ksettings, 0, sizeof(*link_ksettings)); 451 return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings); 452 } 453 EXPORT_SYMBOL(__ethtool_get_link_ksettings); 454 455 /* convert ethtool_link_usettings in user space to a kernel internal 456 * ethtool_link_ksettings. return 0 on success, errno on error. 457 */ 458 static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, 459 const void __user *from) 460 { 461 struct ethtool_link_usettings link_usettings; 462 463 if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) 464 return -EFAULT; 465 466 memcpy(&to->base, &link_usettings.base, sizeof(to->base)); 467 bitmap_from_arr32(to->link_modes.supported, 468 link_usettings.link_modes.supported, 469 __ETHTOOL_LINK_MODE_MASK_NBITS); 470 bitmap_from_arr32(to->link_modes.advertising, 471 link_usettings.link_modes.advertising, 472 __ETHTOOL_LINK_MODE_MASK_NBITS); 473 bitmap_from_arr32(to->link_modes.lp_advertising, 474 link_usettings.link_modes.lp_advertising, 475 __ETHTOOL_LINK_MODE_MASK_NBITS); 476 477 return 0; 478 } 479 480 /* Check if the user is trying to change anything besides speed/duplex */ 481 bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd) 482 { 483 struct ethtool_link_settings base2 = {}; 484 485 base2.speed = cmd->base.speed; 486 base2.port = PORT_OTHER; 487 base2.duplex = cmd->base.duplex; 488 base2.cmd = cmd->base.cmd; 489 base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords; 490 491 return !memcmp(&base2, &cmd->base, sizeof(base2)) && 492 bitmap_empty(cmd->link_modes.supported, 493 __ETHTOOL_LINK_MODE_MASK_NBITS) && 494 bitmap_empty(cmd->link_modes.lp_advertising, 495 __ETHTOOL_LINK_MODE_MASK_NBITS); 496 } 497 498 /* convert a kernel internal ethtool_link_ksettings to 499 * ethtool_link_usettings in user space. return 0 on success, errno on 500 * error. 501 */ 502 static int 503 store_link_ksettings_for_user(void __user *to, 504 const struct ethtool_link_ksettings *from) 505 { 506 struct ethtool_link_usettings link_usettings; 507 508 memcpy(&link_usettings, from, sizeof(link_usettings)); 509 bitmap_to_arr32(link_usettings.link_modes.supported, 510 from->link_modes.supported, 511 __ETHTOOL_LINK_MODE_MASK_NBITS); 512 bitmap_to_arr32(link_usettings.link_modes.advertising, 513 from->link_modes.advertising, 514 __ETHTOOL_LINK_MODE_MASK_NBITS); 515 bitmap_to_arr32(link_usettings.link_modes.lp_advertising, 516 from->link_modes.lp_advertising, 517 __ETHTOOL_LINK_MODE_MASK_NBITS); 518 519 if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) 520 return -EFAULT; 521 522 return 0; 523 } 524 525 /* Query device for its ethtool_link_settings. */ 526 static int ethtool_get_link_ksettings(struct net_device *dev, 527 void __user *useraddr) 528 { 529 int err = 0; 530 struct ethtool_link_ksettings link_ksettings; 531 532 ASSERT_RTNL(); 533 if (!dev->ethtool_ops->get_link_ksettings) 534 return -EOPNOTSUPP; 535 536 /* handle bitmap nbits handshake */ 537 if (copy_from_user(&link_ksettings.base, useraddr, 538 sizeof(link_ksettings.base))) 539 return -EFAULT; 540 541 if (__ETHTOOL_LINK_MODE_MASK_NU32 542 != link_ksettings.base.link_mode_masks_nwords) { 543 /* wrong link mode nbits requested */ 544 memset(&link_ksettings, 0, sizeof(link_ksettings)); 545 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 546 /* send back number of words required as negative val */ 547 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, 548 "need too many bits for link modes!"); 549 link_ksettings.base.link_mode_masks_nwords 550 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); 551 552 /* copy the base fields back to user, not the link 553 * mode bitmaps 554 */ 555 if (copy_to_user(useraddr, &link_ksettings.base, 556 sizeof(link_ksettings.base))) 557 return -EFAULT; 558 559 return 0; 560 } 561 562 /* handshake successful: user/kernel agree on 563 * link_mode_masks_nwords 564 */ 565 566 memset(&link_ksettings, 0, sizeof(link_ksettings)); 567 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 568 if (err < 0) 569 return err; 570 571 /* make sure we tell the right values to user */ 572 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 573 link_ksettings.base.link_mode_masks_nwords 574 = __ETHTOOL_LINK_MODE_MASK_NU32; 575 link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED; 576 link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED; 577 link_ksettings.base.rate_matching = RATE_MATCH_NONE; 578 579 return store_link_ksettings_for_user(useraddr, &link_ksettings); 580 } 581 582 /* Update device ethtool_link_settings. */ 583 static int ethtool_set_link_ksettings(struct net_device *dev, 584 void __user *useraddr) 585 { 586 struct ethtool_link_ksettings link_ksettings = {}; 587 int err; 588 589 ASSERT_RTNL(); 590 591 if (!dev->ethtool_ops->set_link_ksettings) 592 return -EOPNOTSUPP; 593 594 /* make sure nbits field has expected value */ 595 if (copy_from_user(&link_ksettings.base, useraddr, 596 sizeof(link_ksettings.base))) 597 return -EFAULT; 598 599 if (__ETHTOOL_LINK_MODE_MASK_NU32 600 != link_ksettings.base.link_mode_masks_nwords) 601 return -EINVAL; 602 603 /* copy the whole structure, now that we know it has expected 604 * format 605 */ 606 err = load_link_ksettings_from_user(&link_ksettings, useraddr); 607 if (err) 608 return err; 609 610 /* re-check nwords field, just in case */ 611 if (__ETHTOOL_LINK_MODE_MASK_NU32 612 != link_ksettings.base.link_mode_masks_nwords) 613 return -EINVAL; 614 615 if (link_ksettings.base.master_slave_cfg || 616 link_ksettings.base.master_slave_state) 617 return -EINVAL; 618 619 err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 620 if (err >= 0) { 621 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF); 622 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF); 623 } 624 return err; 625 } 626 627 int ethtool_virtdev_set_link_ksettings(struct net_device *dev, 628 const struct ethtool_link_ksettings *cmd, 629 u32 *dev_speed, u8 *dev_duplex) 630 { 631 u32 speed; 632 u8 duplex; 633 634 speed = cmd->base.speed; 635 duplex = cmd->base.duplex; 636 /* don't allow custom speed and duplex */ 637 if (!ethtool_validate_speed(speed) || 638 !ethtool_validate_duplex(duplex) || 639 !ethtool_virtdev_validate_cmd(cmd)) 640 return -EINVAL; 641 *dev_speed = speed; 642 *dev_duplex = duplex; 643 644 return 0; 645 } 646 EXPORT_SYMBOL(ethtool_virtdev_set_link_ksettings); 647 648 /* Query device for its ethtool_cmd settings. 649 * 650 * Backward compatibility note: for compatibility with legacy ethtool, this is 651 * now implemented via get_link_ksettings. When driver reports higher link mode 652 * bits, a kernel warning is logged once (with name of 1st driver/device) to 653 * recommend user to upgrade ethtool, but the command is successful (only the 654 * lower link mode bits reported back to user). Deprecated fields from 655 * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero. 656 */ 657 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) 658 { 659 struct ethtool_link_ksettings link_ksettings; 660 struct ethtool_cmd cmd; 661 int err; 662 663 ASSERT_RTNL(); 664 if (!dev->ethtool_ops->get_link_ksettings) 665 return -EOPNOTSUPP; 666 667 if (dev->ethtool->module_fw_flash_in_progress) 668 return -EBUSY; 669 670 memset(&link_ksettings, 0, sizeof(link_ksettings)); 671 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 672 if (err < 0) 673 return err; 674 convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings); 675 676 /* send a sensible cmd tag back to user */ 677 cmd.cmd = ETHTOOL_GSET; 678 679 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 680 return -EFAULT; 681 682 return 0; 683 } 684 685 /* Update device link settings with given ethtool_cmd. 686 * 687 * Backward compatibility note: for compatibility with legacy ethtool, this is 688 * now always implemented via set_link_settings. When user's request updates 689 * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel 690 * warning is logged once (with name of 1st driver/device) to recommend user to 691 * upgrade ethtool, and the request is rejected. 692 */ 693 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) 694 { 695 struct ethtool_link_ksettings link_ksettings; 696 struct ethtool_cmd cmd; 697 int ret; 698 699 ASSERT_RTNL(); 700 701 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 702 return -EFAULT; 703 if (!dev->ethtool_ops->set_link_ksettings) 704 return -EOPNOTSUPP; 705 706 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd)) 707 return -EINVAL; 708 link_ksettings.base.link_mode_masks_nwords = 709 __ETHTOOL_LINK_MODE_MASK_NU32; 710 ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 711 if (ret >= 0) { 712 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF); 713 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF); 714 } 715 return ret; 716 } 717 718 static int 719 ethtool_get_drvinfo(struct net_device *dev, struct ethtool_devlink_compat *rsp) 720 { 721 const struct ethtool_ops *ops = dev->ethtool_ops; 722 struct device *parent = dev->dev.parent; 723 724 rsp->info.cmd = ETHTOOL_GDRVINFO; 725 strscpy(rsp->info.version, init_uts_ns.name.release, 726 sizeof(rsp->info.version)); 727 if (ops->get_drvinfo) { 728 ops->get_drvinfo(dev, &rsp->info); 729 if (!rsp->info.bus_info[0] && parent) 730 strscpy(rsp->info.bus_info, dev_name(parent), 731 sizeof(rsp->info.bus_info)); 732 if (!rsp->info.driver[0] && parent && parent->driver) 733 strscpy(rsp->info.driver, parent->driver->name, 734 sizeof(rsp->info.driver)); 735 } else if (parent && parent->driver) { 736 strscpy(rsp->info.bus_info, dev_name(parent), 737 sizeof(rsp->info.bus_info)); 738 strscpy(rsp->info.driver, parent->driver->name, 739 sizeof(rsp->info.driver)); 740 } else if (dev->rtnl_link_ops) { 741 strscpy(rsp->info.driver, dev->rtnl_link_ops->kind, 742 sizeof(rsp->info.driver)); 743 } else { 744 return -EOPNOTSUPP; 745 } 746 747 /* 748 * this method of obtaining string set info is deprecated; 749 * Use ETHTOOL_GSSET_INFO instead. 750 */ 751 if (ops->get_sset_count) { 752 int rc; 753 754 rc = ops->get_sset_count(dev, ETH_SS_TEST); 755 if (rc >= 0) 756 rsp->info.testinfo_len = rc; 757 rc = ops->get_sset_count(dev, ETH_SS_STATS); 758 if (rc >= 0) 759 rsp->info.n_stats = rc; 760 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); 761 if (rc >= 0) 762 rsp->info.n_priv_flags = rc; 763 } 764 if (ops->get_regs_len) { 765 int ret = ops->get_regs_len(dev); 766 767 if (ret > 0) 768 rsp->info.regdump_len = ret; 769 } 770 771 if (ops->get_eeprom_len) 772 rsp->info.eedump_len = ops->get_eeprom_len(dev); 773 774 if (!rsp->info.fw_version[0]) 775 rsp->devlink = netdev_to_devlink_get(dev); 776 777 return 0; 778 } 779 780 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, 781 void __user *useraddr) 782 { 783 struct ethtool_sset_info info; 784 u64 sset_mask; 785 int i, idx = 0, n_bits = 0, ret, rc; 786 u32 *info_buf = NULL; 787 788 if (copy_from_user(&info, useraddr, sizeof(info))) 789 return -EFAULT; 790 791 /* store copy of mask, because we zero struct later on */ 792 sset_mask = info.sset_mask; 793 if (!sset_mask) 794 return 0; 795 796 /* calculate size of return buffer */ 797 n_bits = hweight64(sset_mask); 798 799 memset(&info, 0, sizeof(info)); 800 info.cmd = ETHTOOL_GSSET_INFO; 801 802 info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER); 803 if (!info_buf) 804 return -ENOMEM; 805 806 /* 807 * fill return buffer based on input bitmask and successful 808 * get_sset_count return 809 */ 810 for (i = 0; i < 64; i++) { 811 if (!(sset_mask & (1ULL << i))) 812 continue; 813 814 rc = __ethtool_get_sset_count(dev, i); 815 if (rc >= 0) { 816 info.sset_mask |= (1ULL << i); 817 info_buf[idx++] = rc; 818 } 819 } 820 821 ret = -EFAULT; 822 if (copy_to_user(useraddr, &info, sizeof(info))) 823 goto out; 824 825 useraddr += offsetof(struct ethtool_sset_info, data); 826 if (copy_to_user(useraddr, info_buf, array_size(idx, sizeof(u32)))) 827 goto out; 828 829 ret = 0; 830 831 out: 832 kfree(info_buf); 833 return ret; 834 } 835 836 static noinline_for_stack int 837 ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc, 838 const struct compat_ethtool_rxnfc __user *useraddr, 839 size_t size) 840 { 841 struct compat_ethtool_rxnfc crxnfc = {}; 842 843 /* We expect there to be holes between fs.m_ext and 844 * fs.ring_cookie and at the end of fs, but nowhere else. 845 * On non-x86, no conversion should be needed. 846 */ 847 BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) && 848 sizeof(struct compat_ethtool_rxnfc) != 849 sizeof(struct ethtool_rxnfc)); 850 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) + 851 sizeof(useraddr->fs.m_ext) != 852 offsetof(struct ethtool_rxnfc, fs.m_ext) + 853 sizeof(rxnfc->fs.m_ext)); 854 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) - 855 offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) != 856 offsetof(struct ethtool_rxnfc, fs.location) - 857 offsetof(struct ethtool_rxnfc, fs.ring_cookie)); 858 859 if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc)))) 860 return -EFAULT; 861 862 *rxnfc = (struct ethtool_rxnfc) { 863 .cmd = crxnfc.cmd, 864 .flow_type = crxnfc.flow_type, 865 .data = crxnfc.data, 866 .fs = { 867 .flow_type = crxnfc.fs.flow_type, 868 .h_u = crxnfc.fs.h_u, 869 .h_ext = crxnfc.fs.h_ext, 870 .m_u = crxnfc.fs.m_u, 871 .m_ext = crxnfc.fs.m_ext, 872 .ring_cookie = crxnfc.fs.ring_cookie, 873 .location = crxnfc.fs.location, 874 }, 875 .rule_cnt = crxnfc.rule_cnt, 876 }; 877 878 return 0; 879 } 880 881 static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc, 882 const void __user *useraddr, 883 size_t size) 884 { 885 if (compat_need_64bit_alignment_fixup()) 886 return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size); 887 888 if (copy_from_user(rxnfc, useraddr, size)) 889 return -EFAULT; 890 891 return 0; 892 } 893 894 static int ethtool_rxnfc_copy_to_compat(void __user *useraddr, 895 const struct ethtool_rxnfc *rxnfc, 896 size_t size, const u32 *rule_buf) 897 { 898 struct compat_ethtool_rxnfc crxnfc; 899 900 memset(&crxnfc, 0, sizeof(crxnfc)); 901 crxnfc = (struct compat_ethtool_rxnfc) { 902 .cmd = rxnfc->cmd, 903 .flow_type = rxnfc->flow_type, 904 .data = rxnfc->data, 905 .fs = { 906 .flow_type = rxnfc->fs.flow_type, 907 .h_u = rxnfc->fs.h_u, 908 .h_ext = rxnfc->fs.h_ext, 909 .m_u = rxnfc->fs.m_u, 910 .m_ext = rxnfc->fs.m_ext, 911 .ring_cookie = rxnfc->fs.ring_cookie, 912 .location = rxnfc->fs.location, 913 }, 914 .rule_cnt = rxnfc->rule_cnt, 915 }; 916 917 if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc)))) 918 return -EFAULT; 919 920 return 0; 921 } 922 923 static int ethtool_rxnfc_copy_struct(u32 cmd, struct ethtool_rxnfc *info, 924 size_t *info_size, void __user *useraddr) 925 { 926 /* struct ethtool_rxnfc was originally defined for 927 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 928 * members. User-space might still be using that 929 * definition. 930 */ 931 if (cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) 932 *info_size = (offsetof(struct ethtool_rxnfc, data) + 933 sizeof(info->data)); 934 935 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) 936 return -EFAULT; 937 938 if ((cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) && info->flow_type & FLOW_RSS) { 939 *info_size = sizeof(*info); 940 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) 941 return -EFAULT; 942 /* Since malicious users may modify the original data, 943 * we need to check whether FLOW_RSS is still requested. 944 */ 945 if (!(info->flow_type & FLOW_RSS)) 946 return -EINVAL; 947 } 948 949 if (info->cmd != cmd) 950 return -EINVAL; 951 952 return 0; 953 } 954 955 static int ethtool_rxnfc_copy_to_user(void __user *useraddr, 956 const struct ethtool_rxnfc *rxnfc, 957 size_t size, const u32 *rule_buf) 958 { 959 int ret; 960 961 if (compat_need_64bit_alignment_fixup()) { 962 ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size, 963 rule_buf); 964 useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs); 965 } else { 966 ret = copy_to_user(useraddr, rxnfc, size); 967 useraddr += offsetof(struct ethtool_rxnfc, rule_locs); 968 } 969 970 if (ret) 971 return -EFAULT; 972 973 if (rule_buf) { 974 if (copy_to_user(useraddr, rule_buf, 975 rxnfc->rule_cnt * sizeof(u32))) 976 return -EFAULT; 977 } 978 979 return 0; 980 } 981 982 static bool flow_type_hashable(u32 flow_type) 983 { 984 switch (flow_type) { 985 case ETHER_FLOW: 986 case TCP_V4_FLOW: 987 case UDP_V4_FLOW: 988 case SCTP_V4_FLOW: 989 case AH_ESP_V4_FLOW: 990 case TCP_V6_FLOW: 991 case UDP_V6_FLOW: 992 case SCTP_V6_FLOW: 993 case AH_ESP_V6_FLOW: 994 case AH_V4_FLOW: 995 case ESP_V4_FLOW: 996 case AH_V6_FLOW: 997 case ESP_V6_FLOW: 998 case IPV4_FLOW: 999 case IPV6_FLOW: 1000 case GTPU_V4_FLOW: 1001 case GTPU_V6_FLOW: 1002 case GTPC_V4_FLOW: 1003 case GTPC_V6_FLOW: 1004 case GTPC_TEID_V4_FLOW: 1005 case GTPC_TEID_V6_FLOW: 1006 case GTPU_EH_V4_FLOW: 1007 case GTPU_EH_V6_FLOW: 1008 case GTPU_UL_V4_FLOW: 1009 case GTPU_UL_V6_FLOW: 1010 case GTPU_DL_V4_FLOW: 1011 case GTPU_DL_V6_FLOW: 1012 return true; 1013 } 1014 1015 return false; 1016 } 1017 1018 static bool flow_type_v6(u32 flow_type) 1019 { 1020 switch (flow_type) { 1021 case TCP_V6_FLOW: 1022 case UDP_V6_FLOW: 1023 case SCTP_V6_FLOW: 1024 case AH_ESP_V6_FLOW: 1025 case AH_V6_FLOW: 1026 case ESP_V6_FLOW: 1027 case IPV6_FLOW: 1028 case GTPU_V6_FLOW: 1029 case GTPC_V6_FLOW: 1030 case GTPC_TEID_V6_FLOW: 1031 case GTPU_EH_V6_FLOW: 1032 case GTPU_UL_V6_FLOW: 1033 case GTPU_DL_V6_FLOW: 1034 return true; 1035 } 1036 1037 return false; 1038 } 1039 1040 /* When adding a new type, update the assert and, if it's hashable, add it to 1041 * the flow_type_hashable switch case. 1042 */ 1043 static_assert(GTPU_DL_V6_FLOW + 1 == __FLOW_TYPE_COUNT); 1044 1045 static int ethtool_check_xfrm_rxfh(u32 input_xfrm, u64 rxfh) 1046 { 1047 /* Sanity check: if symmetric-xor/symmetric-or-xor is set, then: 1048 * 1 - no other fields besides IP src/dst and/or L4 src/dst are set 1049 * 2 - If src is set, dst must also be set 1050 */ 1051 if ((input_xfrm != RXH_XFRM_NO_CHANGE && 1052 input_xfrm & (RXH_XFRM_SYM_XOR | RXH_XFRM_SYM_OR_XOR)) && 1053 !ethtool_rxfh_config_is_sym(rxfh)) 1054 return -EINVAL; 1055 1056 return 0; 1057 } 1058 1059 static int ethtool_check_flow_types(struct net_device *dev, u32 input_xfrm) 1060 { 1061 const struct ethtool_ops *ops = dev->ethtool_ops; 1062 int err; 1063 u32 i; 1064 1065 if (!input_xfrm || input_xfrm == RXH_XFRM_NO_CHANGE) 1066 return 0; 1067 1068 for (i = 0; i < __FLOW_TYPE_COUNT; i++) { 1069 struct ethtool_rxfh_fields fields = { 1070 .flow_type = i, 1071 }; 1072 1073 if (!flow_type_hashable(i)) 1074 continue; 1075 1076 if (ops->get_rxfh_fields(dev, &fields)) 1077 continue; 1078 1079 err = ethtool_check_xfrm_rxfh(input_xfrm, fields.data); 1080 if (err) 1081 return err; 1082 } 1083 1084 return 0; 1085 } 1086 1087 static noinline_for_stack int 1088 ethtool_set_rxfh_fields(struct net_device *dev, u32 cmd, void __user *useraddr) 1089 { 1090 const struct ethtool_ops *ops = dev->ethtool_ops; 1091 struct ethtool_rxfh_fields fields = {}; 1092 struct ethtool_rxnfc info; 1093 size_t info_size = sizeof(info); 1094 int rc; 1095 1096 if (!ops->set_rxfh_fields) 1097 return -EOPNOTSUPP; 1098 1099 rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1100 if (rc) 1101 return rc; 1102 1103 if (info.data & RXH_IP6_FL && !flow_type_v6(info.flow_type)) 1104 return -EINVAL; 1105 1106 if (info.flow_type & FLOW_RSS && info.rss_context && 1107 !ops->rxfh_per_ctx_fields) 1108 return -EINVAL; 1109 1110 mutex_lock(&dev->ethtool->rss_lock); 1111 if (ops->get_rxfh) { 1112 struct ethtool_rxfh_param rxfh = {}; 1113 1114 rc = ops->get_rxfh(dev, &rxfh); 1115 if (rc) 1116 goto exit_unlock; 1117 1118 rc = ethtool_check_xfrm_rxfh(rxfh.input_xfrm, info.data); 1119 if (rc) 1120 goto exit_unlock; 1121 } 1122 1123 fields.data = info.data; 1124 fields.flow_type = info.flow_type & ~FLOW_RSS; 1125 if (info.flow_type & FLOW_RSS) 1126 fields.rss_context = info.rss_context; 1127 1128 rc = ops->set_rxfh_fields(dev, &fields, NULL); 1129 exit_unlock: 1130 mutex_unlock(&dev->ethtool->rss_lock); 1131 if (rc) 1132 return rc; 1133 1134 ethtool_rss_notify(dev, ETHTOOL_MSG_RSS_NTF, fields.rss_context); 1135 return 0; 1136 } 1137 1138 static noinline_for_stack int 1139 ethtool_get_rxfh_fields(struct net_device *dev, u32 cmd, void __user *useraddr) 1140 { 1141 struct ethtool_rxnfc info; 1142 size_t info_size = sizeof(info); 1143 const struct ethtool_ops *ops = dev->ethtool_ops; 1144 struct ethtool_rxfh_fields fields = {}; 1145 int ret; 1146 1147 if (!ops->get_rxfh_fields) 1148 return -EOPNOTSUPP; 1149 1150 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1151 if (ret) 1152 return ret; 1153 1154 if (info.flow_type & FLOW_RSS && info.rss_context && 1155 !ops->rxfh_per_ctx_fields) 1156 return -EINVAL; 1157 1158 fields.flow_type = info.flow_type & ~FLOW_RSS; 1159 if (info.flow_type & FLOW_RSS) 1160 fields.rss_context = info.rss_context; 1161 1162 mutex_lock(&dev->ethtool->rss_lock); 1163 ret = ops->get_rxfh_fields(dev, &fields); 1164 mutex_unlock(&dev->ethtool->rss_lock); 1165 if (ret < 0) 1166 return ret; 1167 1168 info.data = fields.data; 1169 1170 return ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL); 1171 } 1172 1173 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, 1174 u32 cmd, void __user *useraddr) 1175 { 1176 const struct ethtool_ops *ops = dev->ethtool_ops; 1177 struct ethtool_rxnfc info; 1178 size_t info_size = sizeof(info); 1179 int rc; 1180 1181 if (!ops->set_rxnfc) 1182 return -EOPNOTSUPP; 1183 1184 rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1185 if (rc) 1186 return rc; 1187 1188 if (cmd == ETHTOOL_SRXCLSRLINS && info.fs.flow_type & FLOW_RSS) { 1189 /* Nonzero ring with RSS only makes sense 1190 * if NIC adds them together 1191 */ 1192 if (!ops->cap_rss_rxnfc_adds && 1193 ethtool_get_flow_spec_ring(info.fs.ring_cookie)) 1194 return -EINVAL; 1195 1196 if (info.rss_context && 1197 !xa_load(&dev->ethtool->rss_ctx, info.rss_context)) 1198 return -EINVAL; 1199 } 1200 1201 rc = ops->set_rxnfc(dev, &info); 1202 if (rc) 1203 return rc; 1204 1205 if (cmd == ETHTOOL_SRXCLSRLINS && 1206 ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL)) 1207 return -EFAULT; 1208 1209 return 0; 1210 } 1211 1212 static noinline_for_stack int ethtool_get_rxrings(struct net_device *dev, 1213 u32 cmd, 1214 void __user *useraddr) 1215 { 1216 struct ethtool_rxnfc info; 1217 size_t info_size; 1218 int ret; 1219 1220 info_size = sizeof(info); 1221 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1222 if (ret) 1223 return ret; 1224 1225 ret = ethtool_get_rx_ring_count(dev); 1226 if (ret < 0) 1227 return ret; 1228 1229 info.data = ret; 1230 1231 return ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL); 1232 } 1233 1234 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, 1235 u32 cmd, void __user *useraddr) 1236 { 1237 const struct ethtool_ops *ops = dev->ethtool_ops; 1238 struct ethtool_rxnfc info; 1239 void *rule_buf = NULL; 1240 size_t info_size; 1241 int ret; 1242 1243 if (!ops->get_rxnfc) 1244 return -EOPNOTSUPP; 1245 1246 info_size = sizeof(info); 1247 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1248 if (ret) 1249 return ret; 1250 1251 if (info.cmd == ETHTOOL_GRXCLSRLALL) { 1252 if (info.rule_cnt > 0) { 1253 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) 1254 rule_buf = kcalloc(info.rule_cnt, sizeof(u32), 1255 GFP_USER); 1256 if (!rule_buf) 1257 return -ENOMEM; 1258 } 1259 } 1260 1261 ret = ops->get_rxnfc(dev, &info, rule_buf); 1262 if (ret < 0) 1263 goto err_out; 1264 1265 ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf); 1266 err_out: 1267 kfree(rule_buf); 1268 1269 return ret; 1270 } 1271 1272 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, 1273 int num_rx_rings, 1274 u32 size) 1275 { 1276 int i; 1277 1278 if (copy_from_user(indir, useraddr, array_size(size, sizeof(indir[0])))) 1279 return -EFAULT; 1280 1281 /* Validate ring indices */ 1282 for (i = 0; i < size; i++) 1283 if (indir[i] >= num_rx_rings) 1284 return -EINVAL; 1285 1286 return 0; 1287 } 1288 1289 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; 1290 1291 void netdev_rss_key_fill(void *buffer, size_t len) 1292 { 1293 BUG_ON(len > sizeof(netdev_rss_key)); 1294 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); 1295 memcpy(buffer, netdev_rss_key, len); 1296 } 1297 EXPORT_SYMBOL(netdev_rss_key_fill); 1298 1299 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, 1300 void __user *useraddr) 1301 { 1302 struct ethtool_rxfh_param rxfh = {}; 1303 u32 user_size; 1304 int ret; 1305 1306 if (!dev->ethtool_ops->get_rxfh_indir_size || 1307 !dev->ethtool_ops->get_rxfh) 1308 return -EOPNOTSUPP; 1309 rxfh.indir_size = dev->ethtool_ops->get_rxfh_indir_size(dev); 1310 if (rxfh.indir_size == 0) 1311 return -EOPNOTSUPP; 1312 1313 if (copy_from_user(&user_size, 1314 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1315 sizeof(user_size))) 1316 return -EFAULT; 1317 1318 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), 1319 &rxfh.indir_size, sizeof(rxfh.indir_size))) 1320 return -EFAULT; 1321 1322 /* If the user buffer size is 0, this is just a query for the 1323 * device table size. Otherwise, if it's smaller than the 1324 * device table size it's an error. 1325 */ 1326 if (user_size < rxfh.indir_size) 1327 return user_size == 0 ? 0 : -EINVAL; 1328 1329 rxfh.indir = kcalloc(rxfh.indir_size, sizeof(rxfh.indir[0]), GFP_USER); 1330 if (!rxfh.indir) 1331 return -ENOMEM; 1332 1333 mutex_lock(&dev->ethtool->rss_lock); 1334 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh); 1335 mutex_unlock(&dev->ethtool->rss_lock); 1336 if (ret) 1337 goto out; 1338 if (copy_to_user(useraddr + 1339 offsetof(struct ethtool_rxfh_indir, ring_index[0]), 1340 rxfh.indir, rxfh.indir_size * sizeof(*rxfh.indir))) 1341 ret = -EFAULT; 1342 1343 out: 1344 kfree(rxfh.indir); 1345 return ret; 1346 } 1347 1348 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, 1349 void __user *useraddr) 1350 { 1351 const struct ethtool_ops *ops = dev->ethtool_ops; 1352 struct ethtool_rxfh_param rxfh_dev = {}; 1353 struct netlink_ext_ack *extack = NULL; 1354 int num_rx_rings; 1355 u32 user_size, i; 1356 int ret; 1357 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); 1358 1359 if (!ops->get_rxfh_indir_size || !ops->set_rxfh) 1360 return -EOPNOTSUPP; 1361 1362 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1363 if (rxfh_dev.indir_size == 0) 1364 return -EOPNOTSUPP; 1365 1366 if (copy_from_user(&user_size, 1367 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1368 sizeof(user_size))) 1369 return -EFAULT; 1370 1371 if (user_size != 0 && user_size != rxfh_dev.indir_size) 1372 return -EINVAL; 1373 1374 rxfh_dev.indir = kcalloc(rxfh_dev.indir_size, 1375 sizeof(rxfh_dev.indir[0]), GFP_USER); 1376 if (!rxfh_dev.indir) 1377 return -ENOMEM; 1378 1379 num_rx_rings = ethtool_get_rx_ring_count(dev); 1380 if (num_rx_rings < 0) { 1381 ret = num_rx_rings; 1382 goto out; 1383 } 1384 1385 if (user_size == 0) { 1386 u32 *indir = rxfh_dev.indir; 1387 1388 for (i = 0; i < rxfh_dev.indir_size; i++) 1389 indir[i] = ethtool_rxfh_indir_default(i, num_rx_rings); 1390 } else { 1391 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1392 useraddr + ringidx_offset, 1393 num_rx_rings, 1394 rxfh_dev.indir_size); 1395 if (ret) 1396 goto out; 1397 } 1398 1399 rxfh_dev.hfunc = ETH_RSS_HASH_NO_CHANGE; 1400 1401 mutex_lock(&dev->ethtool->rss_lock); 1402 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1403 if (ret) 1404 goto out_unlock; 1405 1406 /* indicate whether rxfh was set to default */ 1407 if (user_size == 0) 1408 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1409 else 1410 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1411 1412 out_unlock: 1413 mutex_unlock(&dev->ethtool->rss_lock); 1414 out: 1415 kfree(rxfh_dev.indir); 1416 return ret; 1417 } 1418 1419 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, 1420 void __user *useraddr) 1421 { 1422 const struct ethtool_ops *ops = dev->ethtool_ops; 1423 struct ethtool_rxfh_param rxfh_dev = {}; 1424 u32 user_indir_size, user_key_size; 1425 struct ethtool_rxfh_context *ctx; 1426 struct ethtool_rxfh rxfh; 1427 u32 indir_bytes; 1428 u8 *rss_config; 1429 u32 total_size; 1430 int ret; 1431 1432 if (!ops->get_rxfh) 1433 return -EOPNOTSUPP; 1434 1435 if (ops->get_rxfh_indir_size) 1436 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1437 if (ops->get_rxfh_key_size) 1438 rxfh_dev.key_size = ops->get_rxfh_key_size(dev); 1439 1440 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1441 return -EFAULT; 1442 user_indir_size = rxfh.indir_size; 1443 user_key_size = rxfh.key_size; 1444 1445 /* Check that reserved fields are 0 for now */ 1446 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1447 return -EINVAL; 1448 /* Most drivers don't handle rss_context, check it's 0 as well */ 1449 if (rxfh.rss_context && !ops->create_rxfh_context) 1450 return -EOPNOTSUPP; 1451 1452 rxfh.indir_size = rxfh_dev.indir_size; 1453 rxfh.key_size = rxfh_dev.key_size; 1454 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) 1455 return -EFAULT; 1456 1457 if ((user_indir_size && user_indir_size != rxfh_dev.indir_size) || 1458 (user_key_size && user_key_size != rxfh_dev.key_size)) 1459 return -EINVAL; 1460 1461 indir_bytes = user_indir_size * sizeof(rxfh_dev.indir[0]); 1462 total_size = indir_bytes + user_key_size; 1463 rss_config = kzalloc(total_size, GFP_USER); 1464 if (!rss_config) 1465 return -ENOMEM; 1466 1467 if (user_indir_size) 1468 rxfh_dev.indir = (u32 *)rss_config; 1469 1470 if (user_key_size) 1471 rxfh_dev.key = rss_config + indir_bytes; 1472 1473 mutex_lock(&dev->ethtool->rss_lock); 1474 if (rxfh.rss_context) { 1475 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1476 if (!ctx) { 1477 ret = -ENOENT; 1478 goto out; 1479 } 1480 if (rxfh_dev.indir) 1481 memcpy(rxfh_dev.indir, ethtool_rxfh_context_indir(ctx), 1482 indir_bytes); 1483 if (!ops->rxfh_per_ctx_key) { 1484 rxfh_dev.key_size = 0; 1485 } else { 1486 if (rxfh_dev.key) 1487 memcpy(rxfh_dev.key, 1488 ethtool_rxfh_context_key(ctx), 1489 user_key_size); 1490 rxfh_dev.hfunc = ctx->hfunc; 1491 } 1492 rxfh_dev.input_xfrm = ctx->input_xfrm; 1493 ret = 0; 1494 } else { 1495 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh_dev); 1496 if (ret) 1497 goto out; 1498 } 1499 1500 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), 1501 &rxfh_dev.hfunc, sizeof(rxfh.hfunc))) { 1502 ret = -EFAULT; 1503 } else if (copy_to_user(useraddr + 1504 offsetof(struct ethtool_rxfh, input_xfrm), 1505 &rxfh_dev.input_xfrm, 1506 sizeof(rxfh.input_xfrm))) { 1507 ret = -EFAULT; 1508 } else if (copy_to_user(useraddr + 1509 offsetof(struct ethtool_rxfh, key_size), 1510 &rxfh_dev.key_size, 1511 sizeof(rxfh.key_size))) { 1512 ret = -EFAULT; 1513 } else if (copy_to_user(useraddr + 1514 offsetof(struct ethtool_rxfh, rss_config[0]), 1515 rss_config, total_size)) { 1516 ret = -EFAULT; 1517 } 1518 out: 1519 mutex_unlock(&dev->ethtool->rss_lock); 1520 kfree(rss_config); 1521 1522 return ret; 1523 } 1524 1525 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, 1526 void __user *useraddr) 1527 { 1528 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); 1529 const struct ethtool_ops *ops = dev->ethtool_ops; 1530 u32 dev_indir_size = 0, dev_key_size = 0, i; 1531 u32 user_indir_len = 0, indir_bytes = 0; 1532 struct ethtool_rxfh_param rxfh_dev = {}; 1533 struct ethtool_rxfh_context *ctx = NULL; 1534 struct netlink_ext_ack *extack = NULL; 1535 struct ethtool_rxfh rxfh; 1536 bool create = false; 1537 int num_rx_rings; 1538 u8 *rss_config; 1539 int ntf = 0; 1540 int ret; 1541 1542 if (!ops->set_rxfh) 1543 return -EOPNOTSUPP; 1544 1545 if (ops->get_rxfh_indir_size) 1546 dev_indir_size = ops->get_rxfh_indir_size(dev); 1547 if (ops->get_rxfh_key_size) 1548 dev_key_size = ops->get_rxfh_key_size(dev); 1549 1550 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1551 return -EFAULT; 1552 1553 /* Check that reserved fields are 0 for now */ 1554 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1555 return -EINVAL; 1556 /* Most drivers don't handle rss_context, check it's 0 as well */ 1557 if (rxfh.rss_context && !ops->create_rxfh_context) 1558 return -EOPNOTSUPP; 1559 /* Check input data transformation capabilities */ 1560 if (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_SYM_XOR && 1561 rxfh.input_xfrm != RXH_XFRM_SYM_OR_XOR && 1562 rxfh.input_xfrm != RXH_XFRM_NO_CHANGE) 1563 return -EINVAL; 1564 if (rxfh.input_xfrm != RXH_XFRM_NO_CHANGE && 1565 rxfh.input_xfrm & ~ops->supported_input_xfrm) 1566 return -EOPNOTSUPP; 1567 create = rxfh.rss_context == ETH_RXFH_CONTEXT_ALLOC; 1568 1569 if ((rxfh.indir_size && 1570 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && 1571 rxfh.indir_size != dev_indir_size) || 1572 (rxfh.key_size && rxfh.key_size != dev_key_size)) 1573 return -EINVAL; 1574 1575 /* Must request at least one change: indir size, hash key, function 1576 * or input transformation. 1577 * There's no need for any of it in case of context creation. 1578 */ 1579 if (!create && 1580 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && 1581 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE && 1582 rxfh.input_xfrm == RXH_XFRM_NO_CHANGE)) 1583 return -EINVAL; 1584 1585 indir_bytes = dev_indir_size * sizeof(rxfh_dev.indir[0]); 1586 1587 /* Check settings which may be global rather than per RSS-context */ 1588 if (rxfh.rss_context && !ops->rxfh_per_ctx_key) 1589 if (rxfh.key_size || 1590 (rxfh.hfunc && rxfh.hfunc != ETH_RSS_HASH_NO_CHANGE) || 1591 (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_NO_CHANGE)) 1592 return -EOPNOTSUPP; 1593 1594 rss_config = kzalloc(indir_bytes + dev_key_size, GFP_USER); 1595 if (!rss_config) 1596 return -ENOMEM; 1597 1598 num_rx_rings = ethtool_get_rx_ring_count(dev); 1599 if (num_rx_rings < 0) { 1600 ret = num_rx_rings; 1601 goto out_free; 1602 } 1603 1604 /* rxfh.indir_size == 0 means reset the indir table to default (master 1605 * context) or delete the context (other RSS contexts). 1606 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. 1607 */ 1608 if (rxfh.indir_size && 1609 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { 1610 user_indir_len = indir_bytes; 1611 rxfh_dev.indir = (u32 *)rss_config; 1612 rxfh_dev.indir_size = dev_indir_size; 1613 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1614 useraddr + rss_cfg_offset, 1615 num_rx_rings, 1616 rxfh.indir_size); 1617 if (ret) 1618 goto out_free; 1619 } else if (rxfh.indir_size == 0) { 1620 if (rxfh.rss_context == 0) { 1621 u32 *indir; 1622 1623 rxfh_dev.indir = (u32 *)rss_config; 1624 rxfh_dev.indir_size = dev_indir_size; 1625 indir = rxfh_dev.indir; 1626 for (i = 0; i < dev_indir_size; i++) 1627 indir[i] = 1628 ethtool_rxfh_indir_default(i, num_rx_rings); 1629 } else { 1630 rxfh_dev.rss_delete = true; 1631 } 1632 } 1633 1634 if (rxfh.key_size) { 1635 rxfh_dev.key_size = dev_key_size; 1636 rxfh_dev.key = rss_config + indir_bytes; 1637 if (copy_from_user(rxfh_dev.key, 1638 useraddr + rss_cfg_offset + user_indir_len, 1639 rxfh.key_size)) { 1640 ret = -EFAULT; 1641 goto out_free; 1642 } 1643 } 1644 1645 mutex_lock(&dev->ethtool->rss_lock); 1646 1647 ret = ethtool_check_flow_types(dev, rxfh.input_xfrm); 1648 if (ret) 1649 goto out_unlock; 1650 1651 if (rxfh.rss_context && rxfh_dev.rss_delete) { 1652 ret = ethtool_check_rss_ctx_busy(dev, rxfh.rss_context); 1653 if (ret) 1654 goto out_unlock; 1655 } 1656 1657 if (create) { 1658 u32 limit, ctx_id; 1659 1660 if (rxfh_dev.rss_delete) { 1661 ret = -EINVAL; 1662 goto out_unlock; 1663 } 1664 ctx = ethtool_rxfh_ctx_alloc(ops, dev_indir_size, dev_key_size); 1665 if (!ctx) { 1666 ret = -ENOMEM; 1667 goto out_unlock; 1668 } 1669 1670 limit = ops->rxfh_max_num_contexts ?: U32_MAX; 1671 ret = xa_alloc(&dev->ethtool->rss_ctx, &ctx_id, ctx, 1672 XA_LIMIT(1, limit - 1), GFP_KERNEL_ACCOUNT); 1673 if (ret < 0) { 1674 kfree(ctx); 1675 goto out_unlock; 1676 } 1677 WARN_ON(!ctx_id); /* can't happen */ 1678 rxfh.rss_context = ctx_id; 1679 } else if (rxfh.rss_context) { 1680 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1681 if (!ctx) { 1682 ret = -ENOENT; 1683 goto out_unlock; 1684 } 1685 } 1686 rxfh_dev.hfunc = rxfh.hfunc; 1687 rxfh_dev.rss_context = rxfh.rss_context; 1688 rxfh_dev.input_xfrm = rxfh.input_xfrm; 1689 1690 if (!rxfh.rss_context) { 1691 ntf = ETHTOOL_MSG_RSS_NTF; 1692 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1693 } else if (create) { 1694 ntf = ETHTOOL_MSG_RSS_CREATE_NTF; 1695 ret = ops->create_rxfh_context(dev, ctx, &rxfh_dev, extack); 1696 /* Make sure driver populates defaults */ 1697 WARN_ON_ONCE(!ret && !rxfh_dev.key && ops->rxfh_per_ctx_key && 1698 !memchr_inv(ethtool_rxfh_context_key(ctx), 0, 1699 ctx->key_size)); 1700 } else if (rxfh_dev.rss_delete) { 1701 ntf = ETHTOOL_MSG_RSS_DELETE_NTF; 1702 ret = ops->remove_rxfh_context(dev, ctx, rxfh.rss_context, 1703 extack); 1704 } else { 1705 ntf = ETHTOOL_MSG_RSS_NTF; 1706 ret = ops->modify_rxfh_context(dev, ctx, &rxfh_dev, extack); 1707 } 1708 if (ret) { 1709 ntf = 0; 1710 if (create) { 1711 /* failed to create, free our new tracking entry */ 1712 xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context); 1713 kfree(ctx); 1714 } 1715 goto out_unlock; 1716 } 1717 1718 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), 1719 &rxfh_dev.rss_context, sizeof(rxfh_dev.rss_context))) 1720 ret = -EFAULT; 1721 1722 if (!rxfh_dev.rss_context) { 1723 /* indicate whether rxfh was set to default */ 1724 if (rxfh.indir_size == 0) 1725 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1726 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1727 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1728 } 1729 /* Update rss_ctx tracking */ 1730 if (rxfh_dev.rss_delete) { 1731 WARN_ON(xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context) != ctx); 1732 kfree(ctx); 1733 } else if (ctx) { 1734 if (rxfh_dev.indir) { 1735 for (i = 0; i < dev_indir_size; i++) 1736 ethtool_rxfh_context_indir(ctx)[i] = rxfh_dev.indir[i]; 1737 ctx->indir_configured = 1738 rxfh.indir_size && 1739 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE; 1740 } 1741 if (rxfh_dev.key) { 1742 memcpy(ethtool_rxfh_context_key(ctx), rxfh_dev.key, 1743 dev_key_size); 1744 ctx->key_configured = !!rxfh.key_size; 1745 } 1746 if (rxfh_dev.hfunc != ETH_RSS_HASH_NO_CHANGE) 1747 ctx->hfunc = rxfh_dev.hfunc; 1748 if (rxfh_dev.input_xfrm != RXH_XFRM_NO_CHANGE) 1749 ctx->input_xfrm = rxfh_dev.input_xfrm; 1750 } 1751 1752 out_unlock: 1753 mutex_unlock(&dev->ethtool->rss_lock); 1754 out_free: 1755 kfree(rss_config); 1756 if (ntf) 1757 ethtool_rss_notify(dev, ntf, rxfh.rss_context); 1758 return ret; 1759 } 1760 1761 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) 1762 { 1763 struct ethtool_regs regs; 1764 const struct ethtool_ops *ops = dev->ethtool_ops; 1765 void *regbuf; 1766 int reglen, ret; 1767 1768 if (!ops->get_regs || !ops->get_regs_len) 1769 return -EOPNOTSUPP; 1770 1771 if (copy_from_user(®s, useraddr, sizeof(regs))) 1772 return -EFAULT; 1773 1774 reglen = ops->get_regs_len(dev); 1775 if (reglen <= 0) 1776 return reglen; 1777 1778 if (regs.len > reglen) 1779 regs.len = reglen; 1780 1781 regbuf = vzalloc(reglen); 1782 if (!regbuf) 1783 return -ENOMEM; 1784 1785 if (regs.len < reglen) 1786 reglen = regs.len; 1787 1788 ops->get_regs(dev, ®s, regbuf); 1789 1790 ret = -EFAULT; 1791 if (copy_to_user(useraddr, ®s, sizeof(regs))) 1792 goto out; 1793 useraddr += offsetof(struct ethtool_regs, data); 1794 if (copy_to_user(useraddr, regbuf, reglen)) 1795 goto out; 1796 ret = 0; 1797 1798 out: 1799 vfree(regbuf); 1800 return ret; 1801 } 1802 1803 static int ethtool_reset(struct net_device *dev, char __user *useraddr) 1804 { 1805 struct ethtool_value reset; 1806 int ret; 1807 1808 if (!dev->ethtool_ops->reset) 1809 return -EOPNOTSUPP; 1810 1811 if (dev->ethtool->module_fw_flash_in_progress) 1812 return -EBUSY; 1813 1814 if (copy_from_user(&reset, useraddr, sizeof(reset))) 1815 return -EFAULT; 1816 1817 ret = dev->ethtool_ops->reset(dev, &reset.data); 1818 if (ret) 1819 return ret; 1820 1821 if (copy_to_user(useraddr, &reset, sizeof(reset))) 1822 return -EFAULT; 1823 return 0; 1824 } 1825 1826 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) 1827 { 1828 struct ethtool_wolinfo wol; 1829 1830 if (!dev->ethtool_ops->get_wol) 1831 return -EOPNOTSUPP; 1832 1833 memset(&wol, 0, sizeof(struct ethtool_wolinfo)); 1834 wol.cmd = ETHTOOL_GWOL; 1835 dev->ethtool_ops->get_wol(dev, &wol); 1836 1837 if (copy_to_user(useraddr, &wol, sizeof(wol))) 1838 return -EFAULT; 1839 return 0; 1840 } 1841 1842 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) 1843 { 1844 struct ethtool_wolinfo wol, cur_wol; 1845 int ret; 1846 1847 if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol) 1848 return -EOPNOTSUPP; 1849 1850 memset(&cur_wol, 0, sizeof(struct ethtool_wolinfo)); 1851 cur_wol.cmd = ETHTOOL_GWOL; 1852 dev->ethtool_ops->get_wol(dev, &cur_wol); 1853 1854 if (copy_from_user(&wol, useraddr, sizeof(wol))) 1855 return -EFAULT; 1856 1857 if (wol.wolopts & ~cur_wol.supported) 1858 return -EINVAL; 1859 1860 if (wol.wolopts == cur_wol.wolopts && 1861 !memcmp(wol.sopass, cur_wol.sopass, sizeof(wol.sopass))) 1862 return 0; 1863 1864 ret = dev->ethtool_ops->set_wol(dev, &wol); 1865 if (ret) 1866 return ret; 1867 1868 dev->ethtool->wol_enabled = !!wol.wolopts; 1869 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF); 1870 1871 return 0; 1872 } 1873 1874 static void eee_to_keee(struct ethtool_keee *keee, 1875 const struct ethtool_eee *eee) 1876 { 1877 memset(keee, 0, sizeof(*keee)); 1878 1879 keee->eee_enabled = eee->eee_enabled; 1880 keee->tx_lpi_enabled = eee->tx_lpi_enabled; 1881 keee->tx_lpi_timer = eee->tx_lpi_timer; 1882 1883 ethtool_convert_legacy_u32_to_link_mode(keee->advertised, 1884 eee->advertised); 1885 } 1886 1887 static void keee_to_eee(struct ethtool_eee *eee, 1888 const struct ethtool_keee *keee) 1889 { 1890 bool overflow; 1891 1892 memset(eee, 0, sizeof(*eee)); 1893 1894 eee->eee_active = keee->eee_active; 1895 eee->eee_enabled = keee->eee_enabled; 1896 eee->tx_lpi_enabled = keee->tx_lpi_enabled; 1897 eee->tx_lpi_timer = keee->tx_lpi_timer; 1898 1899 overflow = !ethtool_convert_link_mode_to_legacy_u32(&eee->supported, 1900 keee->supported); 1901 ethtool_convert_link_mode_to_legacy_u32(&eee->advertised, 1902 keee->advertised); 1903 ethtool_convert_link_mode_to_legacy_u32(&eee->lp_advertised, 1904 keee->lp_advertised); 1905 if (overflow) 1906 pr_warn("Ethtool ioctl interface doesn't support passing EEE linkmodes beyond bit 32\n"); 1907 } 1908 1909 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) 1910 { 1911 struct ethtool_keee keee; 1912 struct ethtool_eee eee; 1913 int rc; 1914 1915 if (!dev->ethtool_ops->get_eee) 1916 return -EOPNOTSUPP; 1917 1918 memset(&keee, 0, sizeof(keee)); 1919 rc = dev->ethtool_ops->get_eee(dev, &keee); 1920 if (rc) 1921 return rc; 1922 1923 keee_to_eee(&eee, &keee); 1924 if (copy_to_user(useraddr, &eee, sizeof(eee))) 1925 return -EFAULT; 1926 1927 return 0; 1928 } 1929 1930 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) 1931 { 1932 struct ethtool_keee keee; 1933 struct ethtool_eee eee; 1934 int ret; 1935 1936 if (!dev->ethtool_ops->set_eee) 1937 return -EOPNOTSUPP; 1938 1939 if (copy_from_user(&eee, useraddr, sizeof(eee))) 1940 return -EFAULT; 1941 1942 eee_to_keee(&keee, &eee); 1943 ret = dev->ethtool_ops->set_eee(dev, &keee); 1944 if (!ret) 1945 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF); 1946 return ret; 1947 } 1948 1949 static int ethtool_nway_reset(struct net_device *dev) 1950 { 1951 if (!dev->ethtool_ops->nway_reset) 1952 return -EOPNOTSUPP; 1953 1954 return dev->ethtool_ops->nway_reset(dev); 1955 } 1956 1957 static int ethtool_get_link(struct net_device *dev, char __user *useraddr) 1958 { 1959 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; 1960 int link = __ethtool_get_link(dev); 1961 1962 if (link < 0) 1963 return link; 1964 1965 edata.data = link; 1966 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1967 return -EFAULT; 1968 return 0; 1969 } 1970 1971 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, 1972 int (*getter)(struct net_device *, 1973 struct ethtool_eeprom *, u8 *), 1974 u32 total_len) 1975 { 1976 struct ethtool_eeprom eeprom; 1977 void __user *userbuf = useraddr + sizeof(eeprom); 1978 u32 bytes_remaining; 1979 u8 *data; 1980 int ret = 0; 1981 1982 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1983 return -EFAULT; 1984 1985 /* Check for wrap and zero */ 1986 if (eeprom.offset + eeprom.len <= eeprom.offset) 1987 return -EINVAL; 1988 1989 /* Check for exceeding total eeprom len */ 1990 if (eeprom.offset + eeprom.len > total_len) 1991 return -EINVAL; 1992 1993 data = kzalloc(PAGE_SIZE, GFP_USER); 1994 if (!data) 1995 return -ENOMEM; 1996 1997 bytes_remaining = eeprom.len; 1998 while (bytes_remaining > 0) { 1999 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 2000 2001 ret = getter(dev, &eeprom, data); 2002 if (ret) 2003 break; 2004 if (!eeprom.len) { 2005 ret = -EIO; 2006 break; 2007 } 2008 if (copy_to_user(userbuf, data, eeprom.len)) { 2009 ret = -EFAULT; 2010 break; 2011 } 2012 userbuf += eeprom.len; 2013 eeprom.offset += eeprom.len; 2014 bytes_remaining -= eeprom.len; 2015 } 2016 2017 eeprom.len = userbuf - (useraddr + sizeof(eeprom)); 2018 eeprom.offset -= eeprom.len; 2019 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) 2020 ret = -EFAULT; 2021 2022 kfree(data); 2023 return ret; 2024 } 2025 2026 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) 2027 { 2028 const struct ethtool_ops *ops = dev->ethtool_ops; 2029 2030 if (!ops->get_eeprom || !ops->get_eeprom_len || 2031 !ops->get_eeprom_len(dev)) 2032 return -EOPNOTSUPP; 2033 2034 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, 2035 ops->get_eeprom_len(dev)); 2036 } 2037 2038 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) 2039 { 2040 struct ethtool_eeprom eeprom; 2041 const struct ethtool_ops *ops = dev->ethtool_ops; 2042 void __user *userbuf = useraddr + sizeof(eeprom); 2043 u32 bytes_remaining; 2044 u8 *data; 2045 int ret = 0; 2046 2047 if (!ops->set_eeprom || !ops->get_eeprom_len || 2048 !ops->get_eeprom_len(dev)) 2049 return -EOPNOTSUPP; 2050 2051 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 2052 return -EFAULT; 2053 2054 /* Check for wrap and zero */ 2055 if (eeprom.offset + eeprom.len <= eeprom.offset) 2056 return -EINVAL; 2057 2058 /* Check for exceeding total eeprom len */ 2059 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) 2060 return -EINVAL; 2061 2062 data = kzalloc(PAGE_SIZE, GFP_USER); 2063 if (!data) 2064 return -ENOMEM; 2065 2066 bytes_remaining = eeprom.len; 2067 while (bytes_remaining > 0) { 2068 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 2069 2070 if (copy_from_user(data, userbuf, eeprom.len)) { 2071 ret = -EFAULT; 2072 break; 2073 } 2074 ret = ops->set_eeprom(dev, &eeprom, data); 2075 if (ret) 2076 break; 2077 userbuf += eeprom.len; 2078 eeprom.offset += eeprom.len; 2079 bytes_remaining -= eeprom.len; 2080 } 2081 2082 kfree(data); 2083 return ret; 2084 } 2085 2086 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, 2087 void __user *useraddr) 2088 { 2089 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2090 struct kernel_ethtool_coalesce kernel_coalesce = {}; 2091 int ret; 2092 2093 if (!dev->ethtool_ops->get_coalesce) 2094 return -EOPNOTSUPP; 2095 2096 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 2097 NULL); 2098 if (ret) 2099 return ret; 2100 2101 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2102 return -EFAULT; 2103 return 0; 2104 } 2105 2106 static bool 2107 ethtool_set_coalesce_supported(struct net_device *dev, 2108 struct ethtool_coalesce *coalesce) 2109 { 2110 u32 supported_params = dev->ethtool_ops->supported_coalesce_params; 2111 u32 nonzero_params = 0; 2112 2113 if (coalesce->rx_coalesce_usecs) 2114 nonzero_params |= ETHTOOL_COALESCE_RX_USECS; 2115 if (coalesce->rx_max_coalesced_frames) 2116 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; 2117 if (coalesce->rx_coalesce_usecs_irq) 2118 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; 2119 if (coalesce->rx_max_coalesced_frames_irq) 2120 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; 2121 if (coalesce->tx_coalesce_usecs) 2122 nonzero_params |= ETHTOOL_COALESCE_TX_USECS; 2123 if (coalesce->tx_max_coalesced_frames) 2124 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; 2125 if (coalesce->tx_coalesce_usecs_irq) 2126 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; 2127 if (coalesce->tx_max_coalesced_frames_irq) 2128 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; 2129 if (coalesce->stats_block_coalesce_usecs) 2130 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; 2131 if (coalesce->use_adaptive_rx_coalesce) 2132 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; 2133 if (coalesce->use_adaptive_tx_coalesce) 2134 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; 2135 if (coalesce->pkt_rate_low) 2136 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; 2137 if (coalesce->rx_coalesce_usecs_low) 2138 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; 2139 if (coalesce->rx_max_coalesced_frames_low) 2140 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; 2141 if (coalesce->tx_coalesce_usecs_low) 2142 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; 2143 if (coalesce->tx_max_coalesced_frames_low) 2144 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; 2145 if (coalesce->pkt_rate_high) 2146 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; 2147 if (coalesce->rx_coalesce_usecs_high) 2148 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; 2149 if (coalesce->rx_max_coalesced_frames_high) 2150 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; 2151 if (coalesce->tx_coalesce_usecs_high) 2152 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; 2153 if (coalesce->tx_max_coalesced_frames_high) 2154 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; 2155 if (coalesce->rate_sample_interval) 2156 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; 2157 2158 return (supported_params & nonzero_params) == nonzero_params; 2159 } 2160 2161 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, 2162 void __user *useraddr) 2163 { 2164 struct kernel_ethtool_coalesce kernel_coalesce = {}; 2165 struct ethtool_coalesce coalesce; 2166 int ret; 2167 2168 if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce) 2169 return -EOPNOTSUPP; 2170 2171 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 2172 NULL); 2173 if (ret) 2174 return ret; 2175 2176 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) 2177 return -EFAULT; 2178 2179 if (!ethtool_set_coalesce_supported(dev, &coalesce)) 2180 return -EOPNOTSUPP; 2181 2182 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, 2183 NULL); 2184 if (!ret) 2185 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF); 2186 return ret; 2187 } 2188 2189 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) 2190 { 2191 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; 2192 struct kernel_ethtool_ringparam kernel_ringparam = {}; 2193 2194 if (!dev->ethtool_ops->get_ringparam) 2195 return -EOPNOTSUPP; 2196 2197 dev->ethtool_ops->get_ringparam(dev, &ringparam, 2198 &kernel_ringparam, NULL); 2199 2200 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) 2201 return -EFAULT; 2202 return 0; 2203 } 2204 2205 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) 2206 { 2207 struct kernel_ethtool_ringparam kernel_ringparam; 2208 struct ethtool_ringparam ringparam, max; 2209 int ret; 2210 2211 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) 2212 return -EOPNOTSUPP; 2213 2214 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) 2215 return -EFAULT; 2216 2217 ethtool_ringparam_get_cfg(dev, &max, &kernel_ringparam, NULL); 2218 2219 /* ensure new ring parameters are within the maximums */ 2220 if (ringparam.rx_pending > max.rx_max_pending || 2221 ringparam.rx_mini_pending > max.rx_mini_max_pending || 2222 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || 2223 ringparam.tx_pending > max.tx_max_pending) 2224 return -EINVAL; 2225 2226 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, 2227 &kernel_ringparam, NULL); 2228 if (!ret) 2229 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF); 2230 return ret; 2231 } 2232 2233 static noinline_for_stack int ethtool_get_channels(struct net_device *dev, 2234 void __user *useraddr) 2235 { 2236 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; 2237 2238 if (!dev->ethtool_ops->get_channels) 2239 return -EOPNOTSUPP; 2240 2241 dev->ethtool_ops->get_channels(dev, &channels); 2242 2243 if (copy_to_user(useraddr, &channels, sizeof(channels))) 2244 return -EFAULT; 2245 return 0; 2246 } 2247 2248 static noinline_for_stack int ethtool_set_channels(struct net_device *dev, 2249 void __user *useraddr) 2250 { 2251 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; 2252 u16 from_channel, to_channel; 2253 unsigned int i; 2254 int ret; 2255 2256 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) 2257 return -EOPNOTSUPP; 2258 2259 if (copy_from_user(&channels, useraddr, sizeof(channels))) 2260 return -EFAULT; 2261 2262 dev->ethtool_ops->get_channels(dev, &curr); 2263 2264 if (channels.rx_count == curr.rx_count && 2265 channels.tx_count == curr.tx_count && 2266 channels.combined_count == curr.combined_count && 2267 channels.other_count == curr.other_count) 2268 return 0; 2269 2270 /* ensure new counts are within the maximums */ 2271 if (channels.rx_count > curr.max_rx || 2272 channels.tx_count > curr.max_tx || 2273 channels.combined_count > curr.max_combined || 2274 channels.other_count > curr.max_other) 2275 return -EINVAL; 2276 2277 /* ensure there is at least one RX and one TX channel */ 2278 if (!channels.combined_count && 2279 (!channels.rx_count || !channels.tx_count)) 2280 return -EINVAL; 2281 2282 ret = ethtool_check_max_channel(dev, channels, NULL); 2283 if (ret) 2284 return ret; 2285 2286 /* Disabling channels, query busy queues (AF_XDP, queue leasing) */ 2287 from_channel = channels.combined_count + 2288 min(channels.rx_count, channels.tx_count); 2289 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); 2290 for (i = from_channel; i < to_channel; i++) 2291 if (netdev_queue_busy(dev, i, NULL)) 2292 return -EINVAL; 2293 2294 ret = dev->ethtool_ops->set_channels(dev, &channels); 2295 if (!ret) 2296 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF); 2297 return ret; 2298 } 2299 2300 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) 2301 { 2302 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; 2303 2304 if (!dev->ethtool_ops->get_pauseparam) 2305 return -EOPNOTSUPP; 2306 2307 dev->ethtool_ops->get_pauseparam(dev, &pauseparam); 2308 2309 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) 2310 return -EFAULT; 2311 return 0; 2312 } 2313 2314 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) 2315 { 2316 struct ethtool_pauseparam pauseparam; 2317 int ret; 2318 2319 if (!dev->ethtool_ops->set_pauseparam) 2320 return -EOPNOTSUPP; 2321 2322 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) 2323 return -EFAULT; 2324 2325 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); 2326 if (!ret) 2327 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF); 2328 return ret; 2329 } 2330 2331 static int ethtool_self_test(struct net_device *dev, char __user *useraddr) 2332 { 2333 struct ethtool_test test; 2334 const struct ethtool_ops *ops = dev->ethtool_ops; 2335 u64 *data; 2336 int ret, test_len; 2337 2338 if (!ops->self_test || !ops->get_sset_count) 2339 return -EOPNOTSUPP; 2340 2341 test_len = ops->get_sset_count(dev, ETH_SS_TEST); 2342 if (test_len < 0) 2343 return test_len; 2344 WARN_ON(test_len == 0); 2345 2346 if (copy_from_user(&test, useraddr, sizeof(test))) 2347 return -EFAULT; 2348 2349 test.len = test_len; 2350 data = kcalloc(test_len, sizeof(u64), GFP_USER); 2351 if (!data) 2352 return -ENOMEM; 2353 2354 netif_testing_on(dev); 2355 ops->self_test(dev, &test, data); 2356 netif_testing_off(dev); 2357 2358 ret = -EFAULT; 2359 if (copy_to_user(useraddr, &test, sizeof(test))) 2360 goto out; 2361 useraddr += sizeof(test); 2362 if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) 2363 goto out; 2364 ret = 0; 2365 2366 out: 2367 kfree(data); 2368 return ret; 2369 } 2370 2371 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) 2372 { 2373 struct ethtool_gstrings gstrings; 2374 u8 *data; 2375 int ret; 2376 2377 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) 2378 return -EFAULT; 2379 2380 ret = __ethtool_get_sset_count(dev, gstrings.string_set); 2381 if (ret < 0) 2382 return ret; 2383 if (ret > S32_MAX / ETH_GSTRING_LEN) 2384 return -ENOMEM; 2385 WARN_ON_ONCE(!ret); 2386 2387 if (gstrings.len && gstrings.len != ret) 2388 gstrings.len = 0; 2389 else 2390 gstrings.len = ret; 2391 2392 if (gstrings.len) { 2393 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); 2394 if (!data) 2395 return -ENOMEM; 2396 2397 __ethtool_get_strings(dev, gstrings.string_set, data); 2398 } else { 2399 data = NULL; 2400 } 2401 2402 ret = -EFAULT; 2403 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) 2404 goto out; 2405 useraddr += sizeof(gstrings); 2406 if (gstrings.len && 2407 copy_to_user(useraddr, data, 2408 array_size(gstrings.len, ETH_GSTRING_LEN))) 2409 goto out; 2410 ret = 0; 2411 2412 out: 2413 vfree(data); 2414 return ret; 2415 } 2416 2417 __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) 2418 { 2419 va_list args; 2420 2421 va_start(args, fmt); 2422 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); 2423 va_end(args); 2424 2425 *data += ETH_GSTRING_LEN; 2426 } 2427 EXPORT_SYMBOL(ethtool_sprintf); 2428 2429 void ethtool_puts(u8 **data, const char *str) 2430 { 2431 strscpy(*data, str, ETH_GSTRING_LEN); 2432 *data += ETH_GSTRING_LEN; 2433 } 2434 EXPORT_SYMBOL(ethtool_puts); 2435 2436 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) 2437 { 2438 struct ethtool_value id; 2439 static bool busy; 2440 const struct ethtool_ops *ops = dev->ethtool_ops; 2441 netdevice_tracker dev_tracker; 2442 int rc; 2443 2444 if (!ops->set_phys_id) 2445 return -EOPNOTSUPP; 2446 2447 if (busy) 2448 return -EBUSY; 2449 2450 if (copy_from_user(&id, useraddr, sizeof(id))) 2451 return -EFAULT; 2452 2453 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); 2454 if (rc < 0) 2455 return rc; 2456 2457 /* Drop the RTNL lock while waiting, but prevent reentry or 2458 * removal of the device. 2459 */ 2460 busy = true; 2461 netdev_hold(dev, &dev_tracker, GFP_KERNEL); 2462 netdev_unlock_ops(dev); 2463 rtnl_unlock(); 2464 2465 if (rc == 0) { 2466 /* Driver will handle this itself */ 2467 schedule_timeout_interruptible( 2468 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); 2469 } else { 2470 /* Driver expects to be called at twice the frequency in rc */ 2471 int n = rc * 2, interval = HZ / n; 2472 u64 count = mul_u32_u32(n, id.data); 2473 u64 i = 0; 2474 2475 do { 2476 rtnl_lock(); 2477 netdev_lock_ops(dev); 2478 rc = ops->set_phys_id(dev, 2479 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); 2480 netdev_unlock_ops(dev); 2481 rtnl_unlock(); 2482 if (rc) 2483 break; 2484 schedule_timeout_interruptible(interval); 2485 } while (!signal_pending(current) && (!id.data || i < count)); 2486 } 2487 2488 rtnl_lock(); 2489 netdev_lock_ops(dev); 2490 netdev_put(dev, &dev_tracker); 2491 busy = false; 2492 2493 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); 2494 return rc; 2495 } 2496 2497 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) 2498 { 2499 struct ethtool_stats stats; 2500 const struct ethtool_ops *ops = dev->ethtool_ops; 2501 u64 *data; 2502 int ret, n_stats; 2503 2504 if (!ops->get_ethtool_stats || !ops->get_sset_count) 2505 return -EOPNOTSUPP; 2506 2507 n_stats = ops->get_sset_count(dev, ETH_SS_STATS); 2508 if (n_stats < 0) 2509 return n_stats; 2510 if (n_stats > S32_MAX / sizeof(u64)) 2511 return -ENOMEM; 2512 WARN_ON_ONCE(!n_stats); 2513 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2514 return -EFAULT; 2515 2516 if (stats.n_stats && stats.n_stats != n_stats) 2517 stats.n_stats = 0; 2518 else 2519 stats.n_stats = n_stats; 2520 2521 if (stats.n_stats) { 2522 data = vzalloc(array_size(stats.n_stats, sizeof(u64))); 2523 if (!data) 2524 return -ENOMEM; 2525 ops->get_ethtool_stats(dev, &stats, data); 2526 } else { 2527 data = NULL; 2528 } 2529 2530 ret = -EFAULT; 2531 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2532 goto out; 2533 useraddr += sizeof(stats); 2534 if (stats.n_stats && 2535 copy_to_user(useraddr, data, 2536 array_size(stats.n_stats, sizeof(u64)))) 2537 goto out; 2538 ret = 0; 2539 2540 out: 2541 vfree(data); 2542 return ret; 2543 } 2544 2545 static int ethtool_vzalloc_stats_array(int n_stats, u64 **data) 2546 { 2547 if (n_stats < 0) 2548 return n_stats; 2549 if (n_stats > S32_MAX / sizeof(u64)) 2550 return -ENOMEM; 2551 if (WARN_ON_ONCE(!n_stats)) 2552 return -EOPNOTSUPP; 2553 2554 *data = vzalloc(array_size(n_stats, sizeof(u64))); 2555 if (!*data) 2556 return -ENOMEM; 2557 2558 return 0; 2559 } 2560 2561 static int ethtool_get_phy_stats_phydev(struct phy_device *phydev, 2562 struct ethtool_stats *stats, 2563 u64 **data) 2564 { 2565 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 2566 int n_stats, ret; 2567 2568 if (!phy_ops || !phy_ops->get_sset_count || !phy_ops->get_stats) 2569 return -EOPNOTSUPP; 2570 2571 n_stats = phy_ops->get_sset_count(phydev); 2572 if (stats->n_stats && stats->n_stats != n_stats) { 2573 stats->n_stats = 0; 2574 return 0; 2575 } 2576 2577 ret = ethtool_vzalloc_stats_array(n_stats, data); 2578 if (ret) 2579 return ret; 2580 2581 stats->n_stats = n_stats; 2582 return phy_ops->get_stats(phydev, stats, *data); 2583 } 2584 2585 static int ethtool_get_phy_stats_ethtool(struct net_device *dev, 2586 struct ethtool_stats *stats, 2587 u64 **data) 2588 { 2589 const struct ethtool_ops *ops = dev->ethtool_ops; 2590 int n_stats, ret; 2591 2592 if (!ops || !ops->get_sset_count || !ops->get_ethtool_phy_stats) 2593 return -EOPNOTSUPP; 2594 2595 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); 2596 if (stats->n_stats && stats->n_stats != n_stats) { 2597 stats->n_stats = 0; 2598 return 0; 2599 } 2600 2601 ret = ethtool_vzalloc_stats_array(n_stats, data); 2602 if (ret) 2603 return ret; 2604 2605 stats->n_stats = n_stats; 2606 ops->get_ethtool_phy_stats(dev, stats, *data); 2607 2608 return 0; 2609 } 2610 2611 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) 2612 { 2613 struct phy_device *phydev = dev->phydev; 2614 struct ethtool_stats stats; 2615 u64 *data = NULL; 2616 int ret = -EOPNOTSUPP; 2617 2618 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2619 return -EFAULT; 2620 2621 if (phydev) 2622 ret = ethtool_get_phy_stats_phydev(phydev, &stats, &data); 2623 2624 if (ret == -EOPNOTSUPP) 2625 ret = ethtool_get_phy_stats_ethtool(dev, &stats, &data); 2626 2627 if (ret) 2628 goto out; 2629 2630 if (copy_to_user(useraddr, &stats, sizeof(stats))) { 2631 ret = -EFAULT; 2632 goto out; 2633 } 2634 2635 useraddr += sizeof(stats); 2636 if (stats.n_stats && 2637 copy_to_user(useraddr, data, 2638 array_size(stats.n_stats, sizeof(u64)))) 2639 ret = -EFAULT; 2640 2641 out: 2642 vfree(data); 2643 return ret; 2644 } 2645 2646 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) 2647 { 2648 struct ethtool_perm_addr epaddr; 2649 2650 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) 2651 return -EFAULT; 2652 2653 if (epaddr.size < dev->addr_len) 2654 return -ETOOSMALL; 2655 epaddr.size = dev->addr_len; 2656 2657 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) 2658 return -EFAULT; 2659 useraddr += sizeof(epaddr); 2660 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) 2661 return -EFAULT; 2662 return 0; 2663 } 2664 2665 static int ethtool_get_value(struct net_device *dev, char __user *useraddr, 2666 u32 cmd, u32 (*actor)(struct net_device *)) 2667 { 2668 struct ethtool_value edata = { .cmd = cmd }; 2669 2670 if (!actor) 2671 return -EOPNOTSUPP; 2672 2673 edata.data = actor(dev); 2674 2675 if (copy_to_user(useraddr, &edata, sizeof(edata))) 2676 return -EFAULT; 2677 return 0; 2678 } 2679 2680 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, 2681 void (*actor)(struct net_device *, u32)) 2682 { 2683 struct ethtool_value edata; 2684 2685 if (!actor) 2686 return -EOPNOTSUPP; 2687 2688 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2689 return -EFAULT; 2690 2691 actor(dev, edata.data); 2692 return 0; 2693 } 2694 2695 static int ethtool_set_value(struct net_device *dev, char __user *useraddr, 2696 int (*actor)(struct net_device *, u32)) 2697 { 2698 struct ethtool_value edata; 2699 2700 if (!actor) 2701 return -EOPNOTSUPP; 2702 2703 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2704 return -EFAULT; 2705 2706 return actor(dev, edata.data); 2707 } 2708 2709 static int 2710 ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) 2711 { 2712 if (!dev->ethtool_ops->flash_device) { 2713 req->devlink = netdev_to_devlink_get(dev); 2714 return 0; 2715 } 2716 2717 return dev->ethtool_ops->flash_device(dev, &req->efl); 2718 } 2719 2720 static int ethtool_set_dump(struct net_device *dev, 2721 void __user *useraddr) 2722 { 2723 struct ethtool_dump dump; 2724 2725 if (!dev->ethtool_ops->set_dump) 2726 return -EOPNOTSUPP; 2727 2728 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2729 return -EFAULT; 2730 2731 return dev->ethtool_ops->set_dump(dev, &dump); 2732 } 2733 2734 static int ethtool_get_dump_flag(struct net_device *dev, 2735 void __user *useraddr) 2736 { 2737 int ret; 2738 struct ethtool_dump dump; 2739 const struct ethtool_ops *ops = dev->ethtool_ops; 2740 2741 if (!ops->get_dump_flag) 2742 return -EOPNOTSUPP; 2743 2744 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2745 return -EFAULT; 2746 2747 ret = ops->get_dump_flag(dev, &dump); 2748 if (ret) 2749 return ret; 2750 2751 if (copy_to_user(useraddr, &dump, sizeof(dump))) 2752 return -EFAULT; 2753 return 0; 2754 } 2755 2756 static int ethtool_get_dump_data(struct net_device *dev, 2757 void __user *useraddr) 2758 { 2759 int ret; 2760 __u32 len; 2761 struct ethtool_dump dump, tmp; 2762 const struct ethtool_ops *ops = dev->ethtool_ops; 2763 void *data = NULL; 2764 2765 if (!ops->get_dump_data || !ops->get_dump_flag) 2766 return -EOPNOTSUPP; 2767 2768 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2769 return -EFAULT; 2770 2771 memset(&tmp, 0, sizeof(tmp)); 2772 tmp.cmd = ETHTOOL_GET_DUMP_FLAG; 2773 ret = ops->get_dump_flag(dev, &tmp); 2774 if (ret) 2775 return ret; 2776 2777 len = min(tmp.len, dump.len); 2778 if (!len) 2779 return -EFAULT; 2780 2781 /* Don't ever let the driver think there's more space available 2782 * than it requested with .get_dump_flag(). 2783 */ 2784 dump.len = len; 2785 2786 /* Always allocate enough space to hold the whole thing so that the 2787 * driver does not need to check the length and bother with partial 2788 * dumping. 2789 */ 2790 data = vzalloc(tmp.len); 2791 if (!data) 2792 return -ENOMEM; 2793 ret = ops->get_dump_data(dev, &dump, data); 2794 if (ret) 2795 goto out; 2796 2797 /* There are two sane possibilities: 2798 * 1. The driver's .get_dump_data() does not touch dump.len. 2799 * 2. Or it may set dump.len to how much it really writes, which 2800 * should be tmp.len (or len if it can do a partial dump). 2801 * In any case respond to userspace with the actual length of data 2802 * it's receiving. 2803 */ 2804 WARN_ON(dump.len != len && dump.len != tmp.len); 2805 dump.len = len; 2806 2807 if (copy_to_user(useraddr, &dump, sizeof(dump))) { 2808 ret = -EFAULT; 2809 goto out; 2810 } 2811 useraddr += offsetof(struct ethtool_dump, data); 2812 if (copy_to_user(useraddr, data, len)) 2813 ret = -EFAULT; 2814 out: 2815 vfree(data); 2816 return ret; 2817 } 2818 2819 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) 2820 { 2821 struct kernel_ethtool_ts_info kernel_info; 2822 struct ethtool_ts_info info = {}; 2823 int err; 2824 2825 err = __ethtool_get_ts_info(dev, &kernel_info); 2826 if (err) 2827 return err; 2828 2829 info.cmd = kernel_info.cmd; 2830 info.so_timestamping = kernel_info.so_timestamping; 2831 info.phc_index = kernel_info.phc_index; 2832 info.tx_types = kernel_info.tx_types; 2833 info.rx_filters = kernel_info.rx_filters; 2834 2835 if (copy_to_user(useraddr, &info, sizeof(info))) 2836 return -EFAULT; 2837 2838 return 0; 2839 } 2840 2841 int ethtool_get_module_info_call(struct net_device *dev, 2842 struct ethtool_modinfo *modinfo) 2843 { 2844 const struct ethtool_ops *ops = dev->ethtool_ops; 2845 struct phy_device *phydev = dev->phydev; 2846 2847 if (dev->ethtool->module_fw_flash_in_progress) 2848 return -EBUSY; 2849 2850 if (dev->sfp_bus) 2851 return sfp_get_module_info(dev->sfp_bus, modinfo); 2852 2853 if (phydev && phydev->drv && phydev->drv->module_info) 2854 return phydev->drv->module_info(phydev, modinfo); 2855 2856 if (ops->get_module_info) 2857 return ops->get_module_info(dev, modinfo); 2858 2859 return -EOPNOTSUPP; 2860 } 2861 2862 static int ethtool_get_module_info(struct net_device *dev, 2863 void __user *useraddr) 2864 { 2865 int ret; 2866 struct ethtool_modinfo modinfo; 2867 2868 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) 2869 return -EFAULT; 2870 2871 ret = ethtool_get_module_info_call(dev, &modinfo); 2872 if (ret) 2873 return ret; 2874 2875 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) 2876 return -EFAULT; 2877 2878 return 0; 2879 } 2880 2881 int ethtool_get_module_eeprom_call(struct net_device *dev, 2882 struct ethtool_eeprom *ee, u8 *data) 2883 { 2884 const struct ethtool_ops *ops = dev->ethtool_ops; 2885 struct phy_device *phydev = dev->phydev; 2886 2887 if (dev->ethtool->module_fw_flash_in_progress) 2888 return -EBUSY; 2889 2890 if (dev->sfp_bus) 2891 return sfp_get_module_eeprom(dev->sfp_bus, ee, data); 2892 2893 if (phydev && phydev->drv && phydev->drv->module_eeprom) 2894 return phydev->drv->module_eeprom(phydev, ee, data); 2895 2896 if (ops->get_module_eeprom) 2897 return ops->get_module_eeprom(dev, ee, data); 2898 2899 return -EOPNOTSUPP; 2900 } 2901 2902 static int ethtool_get_module_eeprom(struct net_device *dev, 2903 void __user *useraddr) 2904 { 2905 int ret; 2906 struct ethtool_modinfo modinfo; 2907 2908 ret = ethtool_get_module_info_call(dev, &modinfo); 2909 if (ret) 2910 return ret; 2911 2912 return ethtool_get_any_eeprom(dev, useraddr, 2913 ethtool_get_module_eeprom_call, 2914 modinfo.eeprom_len); 2915 } 2916 2917 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) 2918 { 2919 switch (tuna->id) { 2920 case ETHTOOL_RX_COPYBREAK: 2921 case ETHTOOL_TX_COPYBREAK: 2922 case ETHTOOL_TX_COPYBREAK_BUF_SIZE: 2923 if (tuna->len != sizeof(u32) || 2924 tuna->type_id != ETHTOOL_TUNABLE_U32) 2925 return -EINVAL; 2926 break; 2927 case ETHTOOL_PFC_PREVENTION_TOUT: 2928 if (tuna->len != sizeof(u16) || 2929 tuna->type_id != ETHTOOL_TUNABLE_U16) 2930 return -EINVAL; 2931 break; 2932 default: 2933 return -EINVAL; 2934 } 2935 2936 return 0; 2937 } 2938 2939 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) 2940 { 2941 int ret; 2942 struct ethtool_tunable tuna; 2943 const struct ethtool_ops *ops = dev->ethtool_ops; 2944 void *data; 2945 2946 if (!ops->get_tunable) 2947 return -EOPNOTSUPP; 2948 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2949 return -EFAULT; 2950 ret = ethtool_tunable_valid(&tuna); 2951 if (ret) 2952 return ret; 2953 data = kzalloc(tuna.len, GFP_USER); 2954 if (!data) 2955 return -ENOMEM; 2956 ret = ops->get_tunable(dev, &tuna, data); 2957 if (ret) 2958 goto out; 2959 useraddr += sizeof(tuna); 2960 ret = -EFAULT; 2961 if (copy_to_user(useraddr, data, tuna.len)) 2962 goto out; 2963 ret = 0; 2964 2965 out: 2966 kfree(data); 2967 return ret; 2968 } 2969 2970 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) 2971 { 2972 int ret; 2973 struct ethtool_tunable tuna; 2974 const struct ethtool_ops *ops = dev->ethtool_ops; 2975 void *data; 2976 2977 if (!ops->set_tunable) 2978 return -EOPNOTSUPP; 2979 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2980 return -EFAULT; 2981 ret = ethtool_tunable_valid(&tuna); 2982 if (ret) 2983 return ret; 2984 useraddr += sizeof(tuna); 2985 data = memdup_user(useraddr, tuna.len); 2986 if (IS_ERR(data)) 2987 return PTR_ERR(data); 2988 ret = ops->set_tunable(dev, &tuna, data); 2989 2990 kfree(data); 2991 return ret; 2992 } 2993 2994 static noinline_for_stack int 2995 ethtool_get_per_queue_coalesce(struct net_device *dev, 2996 void __user *useraddr, 2997 struct ethtool_per_queue_op *per_queue_opt) 2998 { 2999 u32 bit; 3000 int ret; 3001 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 3002 3003 if (!dev->ethtool_ops->get_per_queue_coalesce) 3004 return -EOPNOTSUPP; 3005 3006 useraddr += sizeof(*per_queue_opt); 3007 3008 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, 3009 MAX_NUM_QUEUE); 3010 3011 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 3012 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 3013 3014 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); 3015 if (ret != 0) 3016 return ret; 3017 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 3018 return -EFAULT; 3019 useraddr += sizeof(coalesce); 3020 } 3021 3022 return 0; 3023 } 3024 3025 static noinline_for_stack int 3026 ethtool_set_per_queue_coalesce(struct net_device *dev, 3027 void __user *useraddr, 3028 struct ethtool_per_queue_op *per_queue_opt) 3029 { 3030 u32 bit; 3031 int i, ret = 0; 3032 int n_queue; 3033 struct ethtool_coalesce *backup = NULL, *tmp = NULL; 3034 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 3035 3036 if ((!dev->ethtool_ops->set_per_queue_coalesce) || 3037 (!dev->ethtool_ops->get_per_queue_coalesce)) 3038 return -EOPNOTSUPP; 3039 3040 useraddr += sizeof(*per_queue_opt); 3041 3042 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); 3043 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); 3044 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); 3045 if (!backup) 3046 return -ENOMEM; 3047 3048 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 3049 struct ethtool_coalesce coalesce; 3050 3051 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); 3052 if (ret != 0) 3053 goto roll_back; 3054 3055 tmp++; 3056 3057 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { 3058 ret = -EFAULT; 3059 goto roll_back; 3060 } 3061 3062 if (!ethtool_set_coalesce_supported(dev, &coalesce)) { 3063 ret = -EOPNOTSUPP; 3064 goto roll_back; 3065 } 3066 3067 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); 3068 if (ret != 0) 3069 goto roll_back; 3070 3071 useraddr += sizeof(coalesce); 3072 } 3073 3074 roll_back: 3075 if (ret != 0) { 3076 tmp = backup; 3077 for_each_set_bit(i, queue_mask, bit) { 3078 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); 3079 tmp++; 3080 } 3081 } 3082 kfree(backup); 3083 3084 return ret; 3085 } 3086 3087 static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, 3088 void __user *useraddr, u32 sub_cmd) 3089 { 3090 struct ethtool_per_queue_op per_queue_opt; 3091 3092 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) 3093 return -EFAULT; 3094 3095 if (per_queue_opt.sub_command != sub_cmd) 3096 return -EINVAL; 3097 3098 switch (per_queue_opt.sub_command) { 3099 case ETHTOOL_GCOALESCE: 3100 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); 3101 case ETHTOOL_SCOALESCE: 3102 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); 3103 default: 3104 return -EOPNOTSUPP; 3105 } 3106 } 3107 3108 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) 3109 { 3110 switch (tuna->id) { 3111 case ETHTOOL_PHY_DOWNSHIFT: 3112 case ETHTOOL_PHY_FAST_LINK_DOWN: 3113 if (tuna->len != sizeof(u8) || 3114 tuna->type_id != ETHTOOL_TUNABLE_U8) 3115 return -EINVAL; 3116 break; 3117 case ETHTOOL_PHY_EDPD: 3118 if (tuna->len != sizeof(u16) || 3119 tuna->type_id != ETHTOOL_TUNABLE_U16) 3120 return -EINVAL; 3121 break; 3122 default: 3123 return -EINVAL; 3124 } 3125 3126 return 0; 3127 } 3128 3129 static int get_phy_tunable(struct net_device *dev, void __user *useraddr) 3130 { 3131 struct phy_device *phydev = dev->phydev; 3132 struct ethtool_tunable tuna; 3133 bool phy_drv_tunable; 3134 void *data; 3135 int ret; 3136 3137 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 3138 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) 3139 return -EOPNOTSUPP; 3140 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 3141 return -EFAULT; 3142 ret = ethtool_phy_tunable_valid(&tuna); 3143 if (ret) 3144 return ret; 3145 data = kzalloc(tuna.len, GFP_USER); 3146 if (!data) 3147 return -ENOMEM; 3148 if (phy_drv_tunable) { 3149 mutex_lock(&phydev->lock); 3150 ret = phydev->drv->get_tunable(phydev, &tuna, data); 3151 mutex_unlock(&phydev->lock); 3152 } else { 3153 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); 3154 } 3155 if (ret) 3156 goto out; 3157 useraddr += sizeof(tuna); 3158 ret = -EFAULT; 3159 if (copy_to_user(useraddr, data, tuna.len)) 3160 goto out; 3161 ret = 0; 3162 3163 out: 3164 kfree(data); 3165 return ret; 3166 } 3167 3168 static int set_phy_tunable(struct net_device *dev, void __user *useraddr) 3169 { 3170 struct phy_device *phydev = dev->phydev; 3171 struct ethtool_tunable tuna; 3172 bool phy_drv_tunable; 3173 void *data; 3174 int ret; 3175 3176 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 3177 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) 3178 return -EOPNOTSUPP; 3179 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 3180 return -EFAULT; 3181 ret = ethtool_phy_tunable_valid(&tuna); 3182 if (ret) 3183 return ret; 3184 useraddr += sizeof(tuna); 3185 data = memdup_user(useraddr, tuna.len); 3186 if (IS_ERR(data)) 3187 return PTR_ERR(data); 3188 if (phy_drv_tunable) { 3189 mutex_lock(&phydev->lock); 3190 ret = phydev->drv->set_tunable(phydev, &tuna, data); 3191 mutex_unlock(&phydev->lock); 3192 } else { 3193 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); 3194 } 3195 3196 kfree(data); 3197 return ret; 3198 } 3199 3200 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) 3201 { 3202 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; 3203 int rc; 3204 3205 if (!dev->ethtool_ops->get_fecparam) 3206 return -EOPNOTSUPP; 3207 3208 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); 3209 if (rc) 3210 return rc; 3211 3212 if (WARN_ON_ONCE(fecparam.reserved)) 3213 fecparam.reserved = 0; 3214 3215 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) 3216 return -EFAULT; 3217 return 0; 3218 } 3219 3220 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) 3221 { 3222 struct ethtool_fecparam fecparam; 3223 3224 if (!dev->ethtool_ops->set_fecparam) 3225 return -EOPNOTSUPP; 3226 3227 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) 3228 return -EFAULT; 3229 3230 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) 3231 return -EINVAL; 3232 3233 fecparam.active_fec = 0; 3234 fecparam.reserved = 0; 3235 3236 return dev->ethtool_ops->set_fecparam(dev, &fecparam); 3237 } 3238 3239 /* The main entry point in this file. Called from net/core/dev_ioctl.c */ 3240 3241 static int 3242 __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, 3243 u32 ethcmd, struct ethtool_devlink_compat *devlink_state) 3244 { 3245 struct net_device *dev; 3246 u32 sub_cmd; 3247 int rc; 3248 netdev_features_t old_features; 3249 3250 dev = __dev_get_by_name(net, ifr->ifr_name); 3251 if (!dev) 3252 return -ENODEV; 3253 3254 if (ethcmd == ETHTOOL_PERQUEUE) { 3255 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) 3256 return -EFAULT; 3257 } else { 3258 sub_cmd = ethcmd; 3259 } 3260 /* Allow some commands to be done by anyone */ 3261 switch (sub_cmd) { 3262 case ETHTOOL_GSET: 3263 case ETHTOOL_GDRVINFO: 3264 case ETHTOOL_GMSGLVL: 3265 case ETHTOOL_GLINK: 3266 case ETHTOOL_GCOALESCE: 3267 case ETHTOOL_GRINGPARAM: 3268 case ETHTOOL_GPAUSEPARAM: 3269 case ETHTOOL_GRXCSUM: 3270 case ETHTOOL_GTXCSUM: 3271 case ETHTOOL_GSG: 3272 case ETHTOOL_GSSET_INFO: 3273 case ETHTOOL_GSTRINGS: 3274 case ETHTOOL_GSTATS: 3275 case ETHTOOL_GPHYSTATS: 3276 case ETHTOOL_GTSO: 3277 case ETHTOOL_GPERMADDR: 3278 case ETHTOOL_GUFO: 3279 case ETHTOOL_GGSO: 3280 case ETHTOOL_GGRO: 3281 case ETHTOOL_GFLAGS: 3282 case ETHTOOL_GPFLAGS: 3283 case ETHTOOL_GRXFH: 3284 case ETHTOOL_GRXRINGS: 3285 case ETHTOOL_GRXCLSRLCNT: 3286 case ETHTOOL_GRXCLSRULE: 3287 case ETHTOOL_GRXCLSRLALL: 3288 case ETHTOOL_GRXFHINDIR: 3289 case ETHTOOL_GRSSH: 3290 case ETHTOOL_GFEATURES: 3291 case ETHTOOL_GCHANNELS: 3292 case ETHTOOL_GET_TS_INFO: 3293 case ETHTOOL_GEEE: 3294 case ETHTOOL_GTUNABLE: 3295 case ETHTOOL_PHY_GTUNABLE: 3296 case ETHTOOL_GLINKSETTINGS: 3297 case ETHTOOL_GFECPARAM: 3298 break; 3299 default: 3300 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 3301 return -EPERM; 3302 } 3303 3304 netdev_lock_ops(dev); 3305 if (dev->dev.parent) 3306 pm_runtime_get_sync(dev->dev.parent); 3307 3308 if (!netif_device_present(dev)) { 3309 rc = -ENODEV; 3310 goto out; 3311 } 3312 3313 if (dev->ethtool_ops->begin) { 3314 rc = dev->ethtool_ops->begin(dev); 3315 if (rc < 0) 3316 goto out; 3317 } 3318 old_features = dev->features; 3319 3320 switch (ethcmd) { 3321 case ETHTOOL_GSET: 3322 rc = ethtool_get_settings(dev, useraddr); 3323 break; 3324 case ETHTOOL_SSET: 3325 rc = ethtool_set_settings(dev, useraddr); 3326 break; 3327 case ETHTOOL_GDRVINFO: 3328 rc = ethtool_get_drvinfo(dev, devlink_state); 3329 break; 3330 case ETHTOOL_GREGS: 3331 rc = ethtool_get_regs(dev, useraddr); 3332 break; 3333 case ETHTOOL_GWOL: 3334 rc = ethtool_get_wol(dev, useraddr); 3335 break; 3336 case ETHTOOL_SWOL: 3337 rc = ethtool_set_wol(dev, useraddr); 3338 break; 3339 case ETHTOOL_GMSGLVL: 3340 rc = ethtool_get_value(dev, useraddr, ethcmd, 3341 dev->ethtool_ops->get_msglevel); 3342 break; 3343 case ETHTOOL_SMSGLVL: 3344 rc = ethtool_set_value_void(dev, useraddr, 3345 dev->ethtool_ops->set_msglevel); 3346 if (!rc) 3347 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF); 3348 break; 3349 case ETHTOOL_GEEE: 3350 rc = ethtool_get_eee(dev, useraddr); 3351 break; 3352 case ETHTOOL_SEEE: 3353 rc = ethtool_set_eee(dev, useraddr); 3354 break; 3355 case ETHTOOL_NWAY_RST: 3356 rc = ethtool_nway_reset(dev); 3357 break; 3358 case ETHTOOL_GLINK: 3359 rc = ethtool_get_link(dev, useraddr); 3360 break; 3361 case ETHTOOL_GEEPROM: 3362 rc = ethtool_get_eeprom(dev, useraddr); 3363 break; 3364 case ETHTOOL_SEEPROM: 3365 rc = ethtool_set_eeprom(dev, useraddr); 3366 break; 3367 case ETHTOOL_GCOALESCE: 3368 rc = ethtool_get_coalesce(dev, useraddr); 3369 break; 3370 case ETHTOOL_SCOALESCE: 3371 rc = ethtool_set_coalesce(dev, useraddr); 3372 break; 3373 case ETHTOOL_GRINGPARAM: 3374 rc = ethtool_get_ringparam(dev, useraddr); 3375 break; 3376 case ETHTOOL_SRINGPARAM: 3377 rc = ethtool_set_ringparam(dev, useraddr); 3378 break; 3379 case ETHTOOL_GPAUSEPARAM: 3380 rc = ethtool_get_pauseparam(dev, useraddr); 3381 break; 3382 case ETHTOOL_SPAUSEPARAM: 3383 rc = ethtool_set_pauseparam(dev, useraddr); 3384 break; 3385 case ETHTOOL_TEST: 3386 rc = ethtool_self_test(dev, useraddr); 3387 break; 3388 case ETHTOOL_GSTRINGS: 3389 rc = ethtool_get_strings(dev, useraddr); 3390 break; 3391 case ETHTOOL_PHYS_ID: 3392 rc = ethtool_phys_id(dev, useraddr); 3393 break; 3394 case ETHTOOL_GSTATS: 3395 rc = ethtool_get_stats(dev, useraddr); 3396 break; 3397 case ETHTOOL_GPERMADDR: 3398 rc = ethtool_get_perm_addr(dev, useraddr); 3399 break; 3400 case ETHTOOL_GFLAGS: 3401 rc = ethtool_get_value(dev, useraddr, ethcmd, 3402 __ethtool_get_flags); 3403 break; 3404 case ETHTOOL_SFLAGS: 3405 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); 3406 break; 3407 case ETHTOOL_GPFLAGS: 3408 rc = ethtool_get_value(dev, useraddr, ethcmd, 3409 dev->ethtool_ops->get_priv_flags); 3410 if (!rc) 3411 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF); 3412 break; 3413 case ETHTOOL_SPFLAGS: 3414 rc = ethtool_set_value(dev, useraddr, 3415 dev->ethtool_ops->set_priv_flags); 3416 break; 3417 case ETHTOOL_GRXFH: 3418 rc = ethtool_get_rxfh_fields(dev, ethcmd, useraddr); 3419 break; 3420 case ETHTOOL_SRXFH: 3421 rc = ethtool_set_rxfh_fields(dev, ethcmd, useraddr); 3422 break; 3423 case ETHTOOL_GRXRINGS: 3424 rc = ethtool_get_rxrings(dev, ethcmd, useraddr); 3425 break; 3426 case ETHTOOL_GRXCLSRLCNT: 3427 case ETHTOOL_GRXCLSRULE: 3428 case ETHTOOL_GRXCLSRLALL: 3429 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); 3430 break; 3431 case ETHTOOL_SRXCLSRLDEL: 3432 case ETHTOOL_SRXCLSRLINS: 3433 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); 3434 break; 3435 case ETHTOOL_FLASHDEV: 3436 rc = ethtool_flash_device(dev, devlink_state); 3437 break; 3438 case ETHTOOL_RESET: 3439 rc = ethtool_reset(dev, useraddr); 3440 break; 3441 case ETHTOOL_GSSET_INFO: 3442 rc = ethtool_get_sset_info(dev, useraddr); 3443 break; 3444 case ETHTOOL_GRXFHINDIR: 3445 rc = ethtool_get_rxfh_indir(dev, useraddr); 3446 break; 3447 case ETHTOOL_SRXFHINDIR: 3448 rc = ethtool_set_rxfh_indir(dev, useraddr); 3449 break; 3450 case ETHTOOL_GRSSH: 3451 rc = ethtool_get_rxfh(dev, useraddr); 3452 break; 3453 case ETHTOOL_SRSSH: 3454 rc = ethtool_set_rxfh(dev, useraddr); 3455 break; 3456 case ETHTOOL_GFEATURES: 3457 rc = ethtool_get_features(dev, useraddr); 3458 break; 3459 case ETHTOOL_SFEATURES: 3460 rc = ethtool_set_features(dev, useraddr); 3461 break; 3462 case ETHTOOL_GTXCSUM: 3463 case ETHTOOL_GRXCSUM: 3464 case ETHTOOL_GSG: 3465 case ETHTOOL_GTSO: 3466 case ETHTOOL_GGSO: 3467 case ETHTOOL_GGRO: 3468 rc = ethtool_get_one_feature(dev, useraddr, ethcmd); 3469 break; 3470 case ETHTOOL_STXCSUM: 3471 case ETHTOOL_SRXCSUM: 3472 case ETHTOOL_SSG: 3473 case ETHTOOL_STSO: 3474 case ETHTOOL_SGSO: 3475 case ETHTOOL_SGRO: 3476 rc = ethtool_set_one_feature(dev, useraddr, ethcmd); 3477 break; 3478 case ETHTOOL_GCHANNELS: 3479 rc = ethtool_get_channels(dev, useraddr); 3480 break; 3481 case ETHTOOL_SCHANNELS: 3482 rc = ethtool_set_channels(dev, useraddr); 3483 break; 3484 case ETHTOOL_SET_DUMP: 3485 rc = ethtool_set_dump(dev, useraddr); 3486 break; 3487 case ETHTOOL_GET_DUMP_FLAG: 3488 rc = ethtool_get_dump_flag(dev, useraddr); 3489 break; 3490 case ETHTOOL_GET_DUMP_DATA: 3491 rc = ethtool_get_dump_data(dev, useraddr); 3492 break; 3493 case ETHTOOL_GET_TS_INFO: 3494 rc = ethtool_get_ts_info(dev, useraddr); 3495 break; 3496 case ETHTOOL_GMODULEINFO: 3497 rc = ethtool_get_module_info(dev, useraddr); 3498 break; 3499 case ETHTOOL_GMODULEEEPROM: 3500 rc = ethtool_get_module_eeprom(dev, useraddr); 3501 break; 3502 case ETHTOOL_GTUNABLE: 3503 rc = ethtool_get_tunable(dev, useraddr); 3504 break; 3505 case ETHTOOL_STUNABLE: 3506 rc = ethtool_set_tunable(dev, useraddr); 3507 break; 3508 case ETHTOOL_GPHYSTATS: 3509 rc = ethtool_get_phy_stats(dev, useraddr); 3510 break; 3511 case ETHTOOL_PERQUEUE: 3512 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); 3513 break; 3514 case ETHTOOL_GLINKSETTINGS: 3515 rc = ethtool_get_link_ksettings(dev, useraddr); 3516 break; 3517 case ETHTOOL_SLINKSETTINGS: 3518 rc = ethtool_set_link_ksettings(dev, useraddr); 3519 break; 3520 case ETHTOOL_PHY_GTUNABLE: 3521 rc = get_phy_tunable(dev, useraddr); 3522 break; 3523 case ETHTOOL_PHY_STUNABLE: 3524 rc = set_phy_tunable(dev, useraddr); 3525 break; 3526 case ETHTOOL_GFECPARAM: 3527 rc = ethtool_get_fecparam(dev, useraddr); 3528 break; 3529 case ETHTOOL_SFECPARAM: 3530 rc = ethtool_set_fecparam(dev, useraddr); 3531 break; 3532 default: 3533 rc = -EOPNOTSUPP; 3534 } 3535 3536 if (dev->ethtool_ops->complete) 3537 dev->ethtool_ops->complete(dev); 3538 3539 if (old_features != dev->features) 3540 netdev_features_change(dev); 3541 out: 3542 if (dev->dev.parent) 3543 pm_runtime_put(dev->dev.parent); 3544 netdev_unlock_ops(dev); 3545 3546 return rc; 3547 } 3548 3549 int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) 3550 { 3551 struct ethtool_devlink_compat *state; 3552 u32 ethcmd; 3553 int rc; 3554 3555 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) 3556 return -EFAULT; 3557 3558 state = kzalloc(sizeof(*state), GFP_KERNEL); 3559 if (!state) 3560 return -ENOMEM; 3561 3562 switch (ethcmd) { 3563 case ETHTOOL_FLASHDEV: 3564 if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { 3565 rc = -EFAULT; 3566 goto exit_free; 3567 } 3568 state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; 3569 break; 3570 } 3571 3572 rtnl_lock(); 3573 rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); 3574 rtnl_unlock(); 3575 if (rc) 3576 goto exit_free; 3577 3578 switch (ethcmd) { 3579 case ETHTOOL_FLASHDEV: 3580 if (state->devlink) 3581 rc = devlink_compat_flash_update(state->devlink, 3582 state->efl.data); 3583 break; 3584 case ETHTOOL_GDRVINFO: 3585 if (state->devlink) 3586 devlink_compat_running_version(state->devlink, 3587 state->info.fw_version, 3588 sizeof(state->info.fw_version)); 3589 if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { 3590 rc = -EFAULT; 3591 goto exit_free; 3592 } 3593 break; 3594 } 3595 3596 exit_free: 3597 if (state->devlink) 3598 devlink_put(state->devlink); 3599 kfree(state); 3600 return rc; 3601 } 3602 3603 struct ethtool_rx_flow_key { 3604 struct flow_dissector_key_basic basic; 3605 union { 3606 struct flow_dissector_key_ipv4_addrs ipv4; 3607 struct flow_dissector_key_ipv6_addrs ipv6; 3608 }; 3609 struct flow_dissector_key_ports tp; 3610 struct flow_dissector_key_ip ip; 3611 struct flow_dissector_key_vlan vlan; 3612 struct flow_dissector_key_eth_addrs eth_addrs; 3613 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ 3614 3615 struct ethtool_rx_flow_match { 3616 struct flow_dissector dissector; 3617 struct ethtool_rx_flow_key key; 3618 struct ethtool_rx_flow_key mask; 3619 }; 3620 3621 struct ethtool_rx_flow_rule * 3622 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) 3623 { 3624 const struct ethtool_rx_flow_spec *fs = input->fs; 3625 struct ethtool_rx_flow_match *match; 3626 struct ethtool_rx_flow_rule *flow; 3627 struct flow_action_entry *act; 3628 3629 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + 3630 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); 3631 if (!flow) 3632 return ERR_PTR(-ENOMEM); 3633 3634 /* ethtool_rx supports only one single action per rule. */ 3635 flow->rule = flow_rule_alloc(1); 3636 if (!flow->rule) { 3637 kfree(flow); 3638 return ERR_PTR(-ENOMEM); 3639 } 3640 3641 match = (struct ethtool_rx_flow_match *)flow->priv; 3642 flow->rule->match.dissector = &match->dissector; 3643 flow->rule->match.mask = &match->mask; 3644 flow->rule->match.key = &match->key; 3645 3646 match->mask.basic.n_proto = htons(0xffff); 3647 3648 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3649 case ETHER_FLOW: { 3650 const struct ethhdr *ether_spec, *ether_m_spec; 3651 3652 ether_spec = &fs->h_u.ether_spec; 3653 ether_m_spec = &fs->m_u.ether_spec; 3654 3655 if (!is_zero_ether_addr(ether_m_spec->h_source)) { 3656 ether_addr_copy(match->key.eth_addrs.src, 3657 ether_spec->h_source); 3658 ether_addr_copy(match->mask.eth_addrs.src, 3659 ether_m_spec->h_source); 3660 } 3661 if (!is_zero_ether_addr(ether_m_spec->h_dest)) { 3662 ether_addr_copy(match->key.eth_addrs.dst, 3663 ether_spec->h_dest); 3664 ether_addr_copy(match->mask.eth_addrs.dst, 3665 ether_m_spec->h_dest); 3666 } 3667 if (ether_m_spec->h_proto) { 3668 match->key.basic.n_proto = ether_spec->h_proto; 3669 match->mask.basic.n_proto = ether_m_spec->h_proto; 3670 } 3671 } 3672 break; 3673 case TCP_V4_FLOW: 3674 case UDP_V4_FLOW: { 3675 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; 3676 3677 match->key.basic.n_proto = htons(ETH_P_IP); 3678 3679 v4_spec = &fs->h_u.tcp_ip4_spec; 3680 v4_m_spec = &fs->m_u.tcp_ip4_spec; 3681 3682 if (v4_m_spec->ip4src) { 3683 match->key.ipv4.src = v4_spec->ip4src; 3684 match->mask.ipv4.src = v4_m_spec->ip4src; 3685 } 3686 if (v4_m_spec->ip4dst) { 3687 match->key.ipv4.dst = v4_spec->ip4dst; 3688 match->mask.ipv4.dst = v4_m_spec->ip4dst; 3689 } 3690 if (v4_m_spec->ip4src || 3691 v4_m_spec->ip4dst) { 3692 match->dissector.used_keys |= 3693 BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS); 3694 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = 3695 offsetof(struct ethtool_rx_flow_key, ipv4); 3696 } 3697 if (v4_m_spec->psrc) { 3698 match->key.tp.src = v4_spec->psrc; 3699 match->mask.tp.src = v4_m_spec->psrc; 3700 } 3701 if (v4_m_spec->pdst) { 3702 match->key.tp.dst = v4_spec->pdst; 3703 match->mask.tp.dst = v4_m_spec->pdst; 3704 } 3705 if (v4_m_spec->psrc || 3706 v4_m_spec->pdst) { 3707 match->dissector.used_keys |= 3708 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3709 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3710 offsetof(struct ethtool_rx_flow_key, tp); 3711 } 3712 if (v4_m_spec->tos) { 3713 match->key.ip.tos = v4_spec->tos; 3714 match->mask.ip.tos = v4_m_spec->tos; 3715 match->dissector.used_keys |= 3716 BIT(FLOW_DISSECTOR_KEY_IP); 3717 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3718 offsetof(struct ethtool_rx_flow_key, ip); 3719 } 3720 } 3721 break; 3722 case TCP_V6_FLOW: 3723 case UDP_V6_FLOW: { 3724 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; 3725 3726 match->key.basic.n_proto = htons(ETH_P_IPV6); 3727 3728 v6_spec = &fs->h_u.tcp_ip6_spec; 3729 v6_m_spec = &fs->m_u.tcp_ip6_spec; 3730 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) { 3731 memcpy(&match->key.ipv6.src, v6_spec->ip6src, 3732 sizeof(match->key.ipv6.src)); 3733 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, 3734 sizeof(match->mask.ipv6.src)); 3735 } 3736 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3737 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, 3738 sizeof(match->key.ipv6.dst)); 3739 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, 3740 sizeof(match->mask.ipv6.dst)); 3741 } 3742 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) || 3743 !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3744 match->dissector.used_keys |= 3745 BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS); 3746 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = 3747 offsetof(struct ethtool_rx_flow_key, ipv6); 3748 } 3749 if (v6_m_spec->psrc) { 3750 match->key.tp.src = v6_spec->psrc; 3751 match->mask.tp.src = v6_m_spec->psrc; 3752 } 3753 if (v6_m_spec->pdst) { 3754 match->key.tp.dst = v6_spec->pdst; 3755 match->mask.tp.dst = v6_m_spec->pdst; 3756 } 3757 if (v6_m_spec->psrc || 3758 v6_m_spec->pdst) { 3759 match->dissector.used_keys |= 3760 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3761 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3762 offsetof(struct ethtool_rx_flow_key, tp); 3763 } 3764 if (v6_m_spec->tclass) { 3765 match->key.ip.tos = v6_spec->tclass; 3766 match->mask.ip.tos = v6_m_spec->tclass; 3767 match->dissector.used_keys |= 3768 BIT_ULL(FLOW_DISSECTOR_KEY_IP); 3769 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3770 offsetof(struct ethtool_rx_flow_key, ip); 3771 } 3772 } 3773 break; 3774 default: 3775 ethtool_rx_flow_rule_destroy(flow); 3776 return ERR_PTR(-EINVAL); 3777 } 3778 3779 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3780 case TCP_V4_FLOW: 3781 case TCP_V6_FLOW: 3782 match->key.basic.ip_proto = IPPROTO_TCP; 3783 match->mask.basic.ip_proto = 0xff; 3784 break; 3785 case UDP_V4_FLOW: 3786 case UDP_V6_FLOW: 3787 match->key.basic.ip_proto = IPPROTO_UDP; 3788 match->mask.basic.ip_proto = 0xff; 3789 break; 3790 } 3791 3792 match->dissector.used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_BASIC); 3793 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = 3794 offsetof(struct ethtool_rx_flow_key, basic); 3795 3796 if (fs->flow_type & FLOW_EXT) { 3797 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3798 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3799 3800 if (ext_m_spec->vlan_etype) { 3801 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; 3802 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; 3803 } 3804 3805 if (ext_m_spec->vlan_tci) { 3806 match->key.vlan.vlan_id = 3807 ntohs(ext_h_spec->vlan_tci) & 0x0fff; 3808 match->mask.vlan.vlan_id = 3809 ntohs(ext_m_spec->vlan_tci) & 0x0fff; 3810 3811 match->key.vlan.vlan_dei = 3812 !!(ext_h_spec->vlan_tci & htons(0x1000)); 3813 match->mask.vlan.vlan_dei = 3814 !!(ext_m_spec->vlan_tci & htons(0x1000)); 3815 3816 match->key.vlan.vlan_priority = 3817 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; 3818 match->mask.vlan.vlan_priority = 3819 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; 3820 } 3821 3822 if (ext_m_spec->vlan_etype || 3823 ext_m_spec->vlan_tci) { 3824 match->dissector.used_keys |= 3825 BIT_ULL(FLOW_DISSECTOR_KEY_VLAN); 3826 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = 3827 offsetof(struct ethtool_rx_flow_key, vlan); 3828 } 3829 } 3830 if (fs->flow_type & FLOW_MAC_EXT) { 3831 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3832 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3833 3834 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, 3835 ETH_ALEN); 3836 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, 3837 ETH_ALEN); 3838 3839 match->dissector.used_keys |= 3840 BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS); 3841 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = 3842 offsetof(struct ethtool_rx_flow_key, eth_addrs); 3843 } 3844 3845 act = &flow->rule->action.entries[0]; 3846 switch (fs->ring_cookie) { 3847 case RX_CLS_FLOW_DISC: 3848 act->id = FLOW_ACTION_DROP; 3849 break; 3850 case RX_CLS_FLOW_WAKE: 3851 act->id = FLOW_ACTION_WAKE; 3852 break; 3853 default: 3854 act->id = FLOW_ACTION_QUEUE; 3855 if (fs->flow_type & FLOW_RSS) 3856 act->queue.ctx = input->rss_ctx; 3857 3858 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); 3859 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); 3860 break; 3861 } 3862 3863 return flow; 3864 } 3865 EXPORT_SYMBOL(ethtool_rx_flow_rule_create); 3866 3867 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) 3868 { 3869 kfree(flow->rule); 3870 kfree(flow); 3871 } 3872 EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); 3873