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->ethtool->rss_indir_user_size = 0; 1409 else 1410 dev->ethtool->rss_indir_user_size = rxfh_dev.indir_size; 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->ethtool->rss_indir_user_size = 0; 1726 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1727 dev->ethtool->rss_indir_user_size = dev_indir_size; 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 ctx->indir_user_size = dev_indir_size; 1741 } 1742 if (rxfh_dev.key) { 1743 memcpy(ethtool_rxfh_context_key(ctx), rxfh_dev.key, 1744 dev_key_size); 1745 ctx->key_configured = !!rxfh.key_size; 1746 } 1747 if (rxfh_dev.hfunc != ETH_RSS_HASH_NO_CHANGE) 1748 ctx->hfunc = rxfh_dev.hfunc; 1749 if (rxfh_dev.input_xfrm != RXH_XFRM_NO_CHANGE) 1750 ctx->input_xfrm = rxfh_dev.input_xfrm; 1751 } 1752 1753 out_unlock: 1754 mutex_unlock(&dev->ethtool->rss_lock); 1755 out_free: 1756 kfree(rss_config); 1757 if (ntf) 1758 ethtool_rss_notify(dev, ntf, rxfh.rss_context); 1759 return ret; 1760 } 1761 1762 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) 1763 { 1764 struct ethtool_regs regs; 1765 const struct ethtool_ops *ops = dev->ethtool_ops; 1766 void *regbuf; 1767 int reglen, ret; 1768 1769 if (!ops->get_regs || !ops->get_regs_len) 1770 return -EOPNOTSUPP; 1771 1772 if (copy_from_user(®s, useraddr, sizeof(regs))) 1773 return -EFAULT; 1774 1775 reglen = ops->get_regs_len(dev); 1776 if (reglen <= 0) 1777 return reglen; 1778 1779 if (regs.len > reglen) 1780 regs.len = reglen; 1781 1782 regbuf = vzalloc(reglen); 1783 if (!regbuf) 1784 return -ENOMEM; 1785 1786 if (regs.len < reglen) 1787 reglen = regs.len; 1788 1789 ops->get_regs(dev, ®s, regbuf); 1790 1791 ret = -EFAULT; 1792 if (copy_to_user(useraddr, ®s, sizeof(regs))) 1793 goto out; 1794 useraddr += offsetof(struct ethtool_regs, data); 1795 if (copy_to_user(useraddr, regbuf, reglen)) 1796 goto out; 1797 ret = 0; 1798 1799 out: 1800 vfree(regbuf); 1801 return ret; 1802 } 1803 1804 static int ethtool_reset(struct net_device *dev, char __user *useraddr) 1805 { 1806 struct ethtool_value reset; 1807 int ret; 1808 1809 if (!dev->ethtool_ops->reset) 1810 return -EOPNOTSUPP; 1811 1812 if (dev->ethtool->module_fw_flash_in_progress) 1813 return -EBUSY; 1814 1815 if (copy_from_user(&reset, useraddr, sizeof(reset))) 1816 return -EFAULT; 1817 1818 ret = dev->ethtool_ops->reset(dev, &reset.data); 1819 if (ret) 1820 return ret; 1821 1822 if (copy_to_user(useraddr, &reset, sizeof(reset))) 1823 return -EFAULT; 1824 return 0; 1825 } 1826 1827 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) 1828 { 1829 struct ethtool_wolinfo wol; 1830 1831 if (!dev->ethtool_ops->get_wol) 1832 return -EOPNOTSUPP; 1833 1834 memset(&wol, 0, sizeof(struct ethtool_wolinfo)); 1835 wol.cmd = ETHTOOL_GWOL; 1836 dev->ethtool_ops->get_wol(dev, &wol); 1837 1838 if (copy_to_user(useraddr, &wol, sizeof(wol))) 1839 return -EFAULT; 1840 return 0; 1841 } 1842 1843 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) 1844 { 1845 struct ethtool_wolinfo wol, cur_wol; 1846 int ret; 1847 1848 if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol) 1849 return -EOPNOTSUPP; 1850 1851 memset(&cur_wol, 0, sizeof(struct ethtool_wolinfo)); 1852 cur_wol.cmd = ETHTOOL_GWOL; 1853 dev->ethtool_ops->get_wol(dev, &cur_wol); 1854 1855 if (copy_from_user(&wol, useraddr, sizeof(wol))) 1856 return -EFAULT; 1857 1858 if (wol.wolopts & ~cur_wol.supported) 1859 return -EINVAL; 1860 1861 if (wol.wolopts == cur_wol.wolopts && 1862 !memcmp(wol.sopass, cur_wol.sopass, sizeof(wol.sopass))) 1863 return 0; 1864 1865 ret = dev->ethtool_ops->set_wol(dev, &wol); 1866 if (ret) 1867 return ret; 1868 1869 dev->ethtool->wol_enabled = !!wol.wolopts; 1870 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF); 1871 1872 return 0; 1873 } 1874 1875 static void eee_to_keee(struct ethtool_keee *keee, 1876 const struct ethtool_eee *eee) 1877 { 1878 memset(keee, 0, sizeof(*keee)); 1879 1880 keee->eee_enabled = eee->eee_enabled; 1881 keee->tx_lpi_enabled = eee->tx_lpi_enabled; 1882 keee->tx_lpi_timer = eee->tx_lpi_timer; 1883 1884 ethtool_convert_legacy_u32_to_link_mode(keee->advertised, 1885 eee->advertised); 1886 } 1887 1888 static void keee_to_eee(struct ethtool_eee *eee, 1889 const struct ethtool_keee *keee) 1890 { 1891 bool overflow; 1892 1893 memset(eee, 0, sizeof(*eee)); 1894 1895 eee->eee_active = keee->eee_active; 1896 eee->eee_enabled = keee->eee_enabled; 1897 eee->tx_lpi_enabled = keee->tx_lpi_enabled; 1898 eee->tx_lpi_timer = keee->tx_lpi_timer; 1899 1900 overflow = !ethtool_convert_link_mode_to_legacy_u32(&eee->supported, 1901 keee->supported); 1902 ethtool_convert_link_mode_to_legacy_u32(&eee->advertised, 1903 keee->advertised); 1904 ethtool_convert_link_mode_to_legacy_u32(&eee->lp_advertised, 1905 keee->lp_advertised); 1906 if (overflow) 1907 pr_warn("Ethtool ioctl interface doesn't support passing EEE linkmodes beyond bit 32\n"); 1908 } 1909 1910 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) 1911 { 1912 struct ethtool_keee keee; 1913 struct ethtool_eee eee; 1914 int rc; 1915 1916 if (!dev->ethtool_ops->get_eee) 1917 return -EOPNOTSUPP; 1918 1919 memset(&keee, 0, sizeof(keee)); 1920 rc = dev->ethtool_ops->get_eee(dev, &keee); 1921 if (rc) 1922 return rc; 1923 1924 keee_to_eee(&eee, &keee); 1925 if (copy_to_user(useraddr, &eee, sizeof(eee))) 1926 return -EFAULT; 1927 1928 return 0; 1929 } 1930 1931 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) 1932 { 1933 struct ethtool_keee keee; 1934 struct ethtool_eee eee; 1935 int ret; 1936 1937 if (!dev->ethtool_ops->set_eee) 1938 return -EOPNOTSUPP; 1939 1940 if (copy_from_user(&eee, useraddr, sizeof(eee))) 1941 return -EFAULT; 1942 1943 eee_to_keee(&keee, &eee); 1944 ret = dev->ethtool_ops->set_eee(dev, &keee); 1945 if (!ret) 1946 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF); 1947 return ret; 1948 } 1949 1950 static int ethtool_nway_reset(struct net_device *dev) 1951 { 1952 if (!dev->ethtool_ops->nway_reset) 1953 return -EOPNOTSUPP; 1954 1955 return dev->ethtool_ops->nway_reset(dev); 1956 } 1957 1958 static int ethtool_get_link(struct net_device *dev, char __user *useraddr) 1959 { 1960 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; 1961 int link = __ethtool_get_link(dev); 1962 1963 if (link < 0) 1964 return link; 1965 1966 edata.data = link; 1967 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1968 return -EFAULT; 1969 return 0; 1970 } 1971 1972 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, 1973 int (*getter)(struct net_device *, 1974 struct ethtool_eeprom *, u8 *), 1975 u32 total_len) 1976 { 1977 struct ethtool_eeprom eeprom; 1978 void __user *userbuf = useraddr + sizeof(eeprom); 1979 u32 bytes_remaining; 1980 u8 *data; 1981 int ret = 0; 1982 1983 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1984 return -EFAULT; 1985 1986 /* Check for wrap and zero */ 1987 if (eeprom.offset + eeprom.len <= eeprom.offset) 1988 return -EINVAL; 1989 1990 /* Check for exceeding total eeprom len */ 1991 if (eeprom.offset + eeprom.len > total_len) 1992 return -EINVAL; 1993 1994 data = kzalloc(PAGE_SIZE, GFP_USER); 1995 if (!data) 1996 return -ENOMEM; 1997 1998 bytes_remaining = eeprom.len; 1999 while (bytes_remaining > 0) { 2000 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 2001 2002 ret = getter(dev, &eeprom, data); 2003 if (ret) 2004 break; 2005 if (!eeprom.len) { 2006 ret = -EIO; 2007 break; 2008 } 2009 if (copy_to_user(userbuf, data, eeprom.len)) { 2010 ret = -EFAULT; 2011 break; 2012 } 2013 userbuf += eeprom.len; 2014 eeprom.offset += eeprom.len; 2015 bytes_remaining -= eeprom.len; 2016 } 2017 2018 eeprom.len = userbuf - (useraddr + sizeof(eeprom)); 2019 eeprom.offset -= eeprom.len; 2020 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) 2021 ret = -EFAULT; 2022 2023 kfree(data); 2024 return ret; 2025 } 2026 2027 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) 2028 { 2029 const struct ethtool_ops *ops = dev->ethtool_ops; 2030 2031 if (!ops->get_eeprom || !ops->get_eeprom_len || 2032 !ops->get_eeprom_len(dev)) 2033 return -EOPNOTSUPP; 2034 2035 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, 2036 ops->get_eeprom_len(dev)); 2037 } 2038 2039 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) 2040 { 2041 struct ethtool_eeprom eeprom; 2042 const struct ethtool_ops *ops = dev->ethtool_ops; 2043 void __user *userbuf = useraddr + sizeof(eeprom); 2044 u32 bytes_remaining; 2045 u8 *data; 2046 int ret = 0; 2047 2048 if (!ops->set_eeprom || !ops->get_eeprom_len || 2049 !ops->get_eeprom_len(dev)) 2050 return -EOPNOTSUPP; 2051 2052 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 2053 return -EFAULT; 2054 2055 /* Check for wrap and zero */ 2056 if (eeprom.offset + eeprom.len <= eeprom.offset) 2057 return -EINVAL; 2058 2059 /* Check for exceeding total eeprom len */ 2060 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) 2061 return -EINVAL; 2062 2063 data = kzalloc(PAGE_SIZE, GFP_USER); 2064 if (!data) 2065 return -ENOMEM; 2066 2067 bytes_remaining = eeprom.len; 2068 while (bytes_remaining > 0) { 2069 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 2070 2071 if (copy_from_user(data, userbuf, eeprom.len)) { 2072 ret = -EFAULT; 2073 break; 2074 } 2075 ret = ops->set_eeprom(dev, &eeprom, data); 2076 if (ret) 2077 break; 2078 userbuf += eeprom.len; 2079 eeprom.offset += eeprom.len; 2080 bytes_remaining -= eeprom.len; 2081 } 2082 2083 kfree(data); 2084 return ret; 2085 } 2086 2087 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, 2088 void __user *useraddr) 2089 { 2090 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2091 struct kernel_ethtool_coalesce kernel_coalesce = {}; 2092 int ret; 2093 2094 if (!dev->ethtool_ops->get_coalesce) 2095 return -EOPNOTSUPP; 2096 2097 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 2098 NULL); 2099 if (ret) 2100 return ret; 2101 2102 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2103 return -EFAULT; 2104 return 0; 2105 } 2106 2107 static bool 2108 ethtool_set_coalesce_supported(struct net_device *dev, 2109 struct ethtool_coalesce *coalesce) 2110 { 2111 u32 supported_params = dev->ethtool_ops->supported_coalesce_params; 2112 u32 nonzero_params = 0; 2113 2114 if (coalesce->rx_coalesce_usecs) 2115 nonzero_params |= ETHTOOL_COALESCE_RX_USECS; 2116 if (coalesce->rx_max_coalesced_frames) 2117 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; 2118 if (coalesce->rx_coalesce_usecs_irq) 2119 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; 2120 if (coalesce->rx_max_coalesced_frames_irq) 2121 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; 2122 if (coalesce->tx_coalesce_usecs) 2123 nonzero_params |= ETHTOOL_COALESCE_TX_USECS; 2124 if (coalesce->tx_max_coalesced_frames) 2125 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; 2126 if (coalesce->tx_coalesce_usecs_irq) 2127 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; 2128 if (coalesce->tx_max_coalesced_frames_irq) 2129 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; 2130 if (coalesce->stats_block_coalesce_usecs) 2131 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; 2132 if (coalesce->use_adaptive_rx_coalesce) 2133 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; 2134 if (coalesce->use_adaptive_tx_coalesce) 2135 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; 2136 if (coalesce->pkt_rate_low) 2137 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; 2138 if (coalesce->rx_coalesce_usecs_low) 2139 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; 2140 if (coalesce->rx_max_coalesced_frames_low) 2141 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; 2142 if (coalesce->tx_coalesce_usecs_low) 2143 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; 2144 if (coalesce->tx_max_coalesced_frames_low) 2145 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; 2146 if (coalesce->pkt_rate_high) 2147 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; 2148 if (coalesce->rx_coalesce_usecs_high) 2149 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; 2150 if (coalesce->rx_max_coalesced_frames_high) 2151 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; 2152 if (coalesce->tx_coalesce_usecs_high) 2153 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; 2154 if (coalesce->tx_max_coalesced_frames_high) 2155 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; 2156 if (coalesce->rate_sample_interval) 2157 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; 2158 2159 return (supported_params & nonzero_params) == nonzero_params; 2160 } 2161 2162 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, 2163 void __user *useraddr) 2164 { 2165 struct kernel_ethtool_coalesce kernel_coalesce = {}; 2166 struct ethtool_coalesce coalesce; 2167 int ret; 2168 2169 if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce) 2170 return -EOPNOTSUPP; 2171 2172 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 2173 NULL); 2174 if (ret) 2175 return ret; 2176 2177 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) 2178 return -EFAULT; 2179 2180 if (!ethtool_set_coalesce_supported(dev, &coalesce)) 2181 return -EOPNOTSUPP; 2182 2183 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, 2184 NULL); 2185 if (!ret) 2186 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF); 2187 return ret; 2188 } 2189 2190 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) 2191 { 2192 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; 2193 struct kernel_ethtool_ringparam kernel_ringparam = {}; 2194 2195 if (!dev->ethtool_ops->get_ringparam) 2196 return -EOPNOTSUPP; 2197 2198 dev->ethtool_ops->get_ringparam(dev, &ringparam, 2199 &kernel_ringparam, NULL); 2200 2201 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) 2202 return -EFAULT; 2203 return 0; 2204 } 2205 2206 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) 2207 { 2208 struct kernel_ethtool_ringparam kernel_ringparam; 2209 struct ethtool_ringparam ringparam, max; 2210 int ret; 2211 2212 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) 2213 return -EOPNOTSUPP; 2214 2215 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) 2216 return -EFAULT; 2217 2218 ethtool_ringparam_get_cfg(dev, &max, &kernel_ringparam, NULL); 2219 2220 /* ensure new ring parameters are within the maximums */ 2221 if (ringparam.rx_pending > max.rx_max_pending || 2222 ringparam.rx_mini_pending > max.rx_mini_max_pending || 2223 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || 2224 ringparam.tx_pending > max.tx_max_pending) 2225 return -EINVAL; 2226 2227 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, 2228 &kernel_ringparam, NULL); 2229 if (!ret) 2230 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF); 2231 return ret; 2232 } 2233 2234 static noinline_for_stack int ethtool_get_channels(struct net_device *dev, 2235 void __user *useraddr) 2236 { 2237 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; 2238 2239 if (!dev->ethtool_ops->get_channels) 2240 return -EOPNOTSUPP; 2241 2242 dev->ethtool_ops->get_channels(dev, &channels); 2243 2244 if (copy_to_user(useraddr, &channels, sizeof(channels))) 2245 return -EFAULT; 2246 return 0; 2247 } 2248 2249 static noinline_for_stack int ethtool_set_channels(struct net_device *dev, 2250 void __user *useraddr) 2251 { 2252 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; 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 for (i = channels.combined_count + channels.rx_count; 2288 i < curr.combined_count + curr.rx_count; i++) { 2289 if (netdev_queue_busy(dev, i, NETDEV_QUEUE_TYPE_RX, NULL)) 2290 return -EINVAL; 2291 } 2292 for (i = channels.combined_count + channels.tx_count; 2293 i < curr.combined_count + curr.tx_count; i++) { 2294 if (netdev_queue_busy(dev, i, NETDEV_QUEUE_TYPE_TX, NULL)) 2295 return -EINVAL; 2296 } 2297 2298 ret = dev->ethtool_ops->set_channels(dev, &channels); 2299 if (!ret) 2300 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF); 2301 return ret; 2302 } 2303 2304 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) 2305 { 2306 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; 2307 2308 if (!dev->ethtool_ops->get_pauseparam) 2309 return -EOPNOTSUPP; 2310 2311 dev->ethtool_ops->get_pauseparam(dev, &pauseparam); 2312 2313 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) 2314 return -EFAULT; 2315 return 0; 2316 } 2317 2318 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) 2319 { 2320 struct ethtool_pauseparam pauseparam; 2321 int ret; 2322 2323 if (!dev->ethtool_ops->set_pauseparam) 2324 return -EOPNOTSUPP; 2325 2326 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) 2327 return -EFAULT; 2328 2329 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); 2330 if (!ret) 2331 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF); 2332 return ret; 2333 } 2334 2335 static int ethtool_self_test(struct net_device *dev, char __user *useraddr) 2336 { 2337 struct ethtool_test test; 2338 const struct ethtool_ops *ops = dev->ethtool_ops; 2339 u64 *data; 2340 int ret, test_len; 2341 2342 if (!ops->self_test || !ops->get_sset_count) 2343 return -EOPNOTSUPP; 2344 2345 test_len = ops->get_sset_count(dev, ETH_SS_TEST); 2346 if (test_len < 0) 2347 return test_len; 2348 WARN_ON(test_len == 0); 2349 2350 if (copy_from_user(&test, useraddr, sizeof(test))) 2351 return -EFAULT; 2352 2353 test.len = test_len; 2354 data = kcalloc(test_len, sizeof(u64), GFP_USER); 2355 if (!data) 2356 return -ENOMEM; 2357 2358 netif_testing_on(dev); 2359 ops->self_test(dev, &test, data); 2360 netif_testing_off(dev); 2361 2362 ret = -EFAULT; 2363 if (copy_to_user(useraddr, &test, sizeof(test))) 2364 goto out; 2365 useraddr += sizeof(test); 2366 if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) 2367 goto out; 2368 ret = 0; 2369 2370 out: 2371 kfree(data); 2372 return ret; 2373 } 2374 2375 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) 2376 { 2377 struct ethtool_gstrings gstrings; 2378 u8 *data; 2379 int ret; 2380 2381 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) 2382 return -EFAULT; 2383 2384 ret = __ethtool_get_sset_count(dev, gstrings.string_set); 2385 if (ret < 0) 2386 return ret; 2387 if (ret > S32_MAX / ETH_GSTRING_LEN) 2388 return -ENOMEM; 2389 WARN_ON_ONCE(!ret); 2390 2391 if (gstrings.len && gstrings.len != ret) 2392 gstrings.len = 0; 2393 else 2394 gstrings.len = ret; 2395 2396 if (gstrings.len) { 2397 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); 2398 if (!data) 2399 return -ENOMEM; 2400 2401 __ethtool_get_strings(dev, gstrings.string_set, data); 2402 } else { 2403 data = NULL; 2404 } 2405 2406 ret = -EFAULT; 2407 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) 2408 goto out; 2409 useraddr += sizeof(gstrings); 2410 if (gstrings.len && 2411 copy_to_user(useraddr, data, 2412 array_size(gstrings.len, ETH_GSTRING_LEN))) 2413 goto out; 2414 ret = 0; 2415 2416 out: 2417 vfree(data); 2418 return ret; 2419 } 2420 2421 __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) 2422 { 2423 va_list args; 2424 2425 va_start(args, fmt); 2426 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); 2427 va_end(args); 2428 2429 *data += ETH_GSTRING_LEN; 2430 } 2431 EXPORT_SYMBOL(ethtool_sprintf); 2432 2433 void ethtool_puts(u8 **data, const char *str) 2434 { 2435 strscpy(*data, str, ETH_GSTRING_LEN); 2436 *data += ETH_GSTRING_LEN; 2437 } 2438 EXPORT_SYMBOL(ethtool_puts); 2439 2440 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) 2441 { 2442 struct ethtool_value id; 2443 static bool busy; 2444 const struct ethtool_ops *ops = dev->ethtool_ops; 2445 netdevice_tracker dev_tracker; 2446 int rc; 2447 2448 if (!ops->set_phys_id) 2449 return -EOPNOTSUPP; 2450 2451 if (busy) 2452 return -EBUSY; 2453 2454 if (copy_from_user(&id, useraddr, sizeof(id))) 2455 return -EFAULT; 2456 2457 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); 2458 if (rc < 0) 2459 return rc; 2460 2461 /* Drop the RTNL lock while waiting, but prevent reentry or 2462 * removal of the device. 2463 */ 2464 busy = true; 2465 netdev_hold(dev, &dev_tracker, GFP_KERNEL); 2466 netdev_unlock_ops(dev); 2467 rtnl_unlock(); 2468 2469 if (rc == 0) { 2470 /* Driver will handle this itself */ 2471 schedule_timeout_interruptible( 2472 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); 2473 } else { 2474 /* Driver expects to be called at twice the frequency in rc */ 2475 int n = rc * 2, interval = HZ / n; 2476 u64 count = mul_u32_u32(n, id.data); 2477 u64 i = 0; 2478 2479 do { 2480 rtnl_lock(); 2481 netdev_lock_ops(dev); 2482 rc = ops->set_phys_id(dev, 2483 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); 2484 netdev_unlock_ops(dev); 2485 rtnl_unlock(); 2486 if (rc) 2487 break; 2488 schedule_timeout_interruptible(interval); 2489 } while (!signal_pending(current) && (!id.data || i < count)); 2490 } 2491 2492 rtnl_lock(); 2493 netdev_lock_ops(dev); 2494 netdev_put(dev, &dev_tracker); 2495 busy = false; 2496 2497 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); 2498 return rc; 2499 } 2500 2501 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) 2502 { 2503 struct ethtool_stats stats; 2504 const struct ethtool_ops *ops = dev->ethtool_ops; 2505 u64 *data; 2506 int ret, n_stats; 2507 2508 if (!ops->get_ethtool_stats || !ops->get_sset_count) 2509 return -EOPNOTSUPP; 2510 2511 n_stats = ops->get_sset_count(dev, ETH_SS_STATS); 2512 if (n_stats < 0) 2513 return n_stats; 2514 if (n_stats > S32_MAX / sizeof(u64)) 2515 return -ENOMEM; 2516 WARN_ON_ONCE(!n_stats); 2517 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2518 return -EFAULT; 2519 2520 if (stats.n_stats && stats.n_stats != n_stats) 2521 stats.n_stats = 0; 2522 else 2523 stats.n_stats = n_stats; 2524 2525 if (stats.n_stats) { 2526 data = vzalloc(array_size(stats.n_stats, sizeof(u64))); 2527 if (!data) 2528 return -ENOMEM; 2529 ops->get_ethtool_stats(dev, &stats, data); 2530 } else { 2531 data = NULL; 2532 } 2533 2534 ret = -EFAULT; 2535 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2536 goto out; 2537 useraddr += sizeof(stats); 2538 if (stats.n_stats && 2539 copy_to_user(useraddr, data, 2540 array_size(stats.n_stats, sizeof(u64)))) 2541 goto out; 2542 ret = 0; 2543 2544 out: 2545 vfree(data); 2546 return ret; 2547 } 2548 2549 static int ethtool_vzalloc_stats_array(int n_stats, u64 **data) 2550 { 2551 if (n_stats < 0) 2552 return n_stats; 2553 if (n_stats > S32_MAX / sizeof(u64)) 2554 return -ENOMEM; 2555 if (WARN_ON_ONCE(!n_stats)) 2556 return -EOPNOTSUPP; 2557 2558 *data = vzalloc(array_size(n_stats, sizeof(u64))); 2559 if (!*data) 2560 return -ENOMEM; 2561 2562 return 0; 2563 } 2564 2565 static int ethtool_get_phy_stats_phydev(struct phy_device *phydev, 2566 struct ethtool_stats *stats, 2567 u64 **data) 2568 { 2569 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 2570 int n_stats, ret; 2571 2572 if (!phy_ops || !phy_ops->get_sset_count || !phy_ops->get_stats) 2573 return -EOPNOTSUPP; 2574 2575 n_stats = phy_ops->get_sset_count(phydev); 2576 if (stats->n_stats && stats->n_stats != n_stats) { 2577 stats->n_stats = 0; 2578 return 0; 2579 } 2580 2581 ret = ethtool_vzalloc_stats_array(n_stats, data); 2582 if (ret) 2583 return ret; 2584 2585 stats->n_stats = n_stats; 2586 return phy_ops->get_stats(phydev, stats, *data); 2587 } 2588 2589 static int ethtool_get_phy_stats_ethtool(struct net_device *dev, 2590 struct ethtool_stats *stats, 2591 u64 **data) 2592 { 2593 const struct ethtool_ops *ops = dev->ethtool_ops; 2594 int n_stats, ret; 2595 2596 if (!ops || !ops->get_sset_count || !ops->get_ethtool_phy_stats) 2597 return -EOPNOTSUPP; 2598 2599 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); 2600 if (stats->n_stats && stats->n_stats != n_stats) { 2601 stats->n_stats = 0; 2602 return 0; 2603 } 2604 2605 ret = ethtool_vzalloc_stats_array(n_stats, data); 2606 if (ret) 2607 return ret; 2608 2609 stats->n_stats = n_stats; 2610 ops->get_ethtool_phy_stats(dev, stats, *data); 2611 2612 return 0; 2613 } 2614 2615 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) 2616 { 2617 struct phy_device *phydev = dev->phydev; 2618 struct ethtool_stats stats; 2619 u64 *data = NULL; 2620 int ret = -EOPNOTSUPP; 2621 2622 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2623 return -EFAULT; 2624 2625 if (phydev) 2626 ret = ethtool_get_phy_stats_phydev(phydev, &stats, &data); 2627 2628 if (ret == -EOPNOTSUPP) 2629 ret = ethtool_get_phy_stats_ethtool(dev, &stats, &data); 2630 2631 if (ret) 2632 goto out; 2633 2634 if (copy_to_user(useraddr, &stats, sizeof(stats))) { 2635 ret = -EFAULT; 2636 goto out; 2637 } 2638 2639 useraddr += sizeof(stats); 2640 if (stats.n_stats && 2641 copy_to_user(useraddr, data, 2642 array_size(stats.n_stats, sizeof(u64)))) 2643 ret = -EFAULT; 2644 2645 out: 2646 vfree(data); 2647 return ret; 2648 } 2649 2650 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) 2651 { 2652 struct ethtool_perm_addr epaddr; 2653 2654 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) 2655 return -EFAULT; 2656 2657 if (epaddr.size < dev->addr_len) 2658 return -ETOOSMALL; 2659 epaddr.size = dev->addr_len; 2660 2661 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) 2662 return -EFAULT; 2663 useraddr += sizeof(epaddr); 2664 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) 2665 return -EFAULT; 2666 return 0; 2667 } 2668 2669 static int ethtool_get_value(struct net_device *dev, char __user *useraddr, 2670 u32 cmd, u32 (*actor)(struct net_device *)) 2671 { 2672 struct ethtool_value edata = { .cmd = cmd }; 2673 2674 if (!actor) 2675 return -EOPNOTSUPP; 2676 2677 edata.data = actor(dev); 2678 2679 if (copy_to_user(useraddr, &edata, sizeof(edata))) 2680 return -EFAULT; 2681 return 0; 2682 } 2683 2684 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, 2685 void (*actor)(struct net_device *, u32)) 2686 { 2687 struct ethtool_value edata; 2688 2689 if (!actor) 2690 return -EOPNOTSUPP; 2691 2692 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2693 return -EFAULT; 2694 2695 actor(dev, edata.data); 2696 return 0; 2697 } 2698 2699 static int ethtool_set_value(struct net_device *dev, char __user *useraddr, 2700 int (*actor)(struct net_device *, u32)) 2701 { 2702 struct ethtool_value edata; 2703 2704 if (!actor) 2705 return -EOPNOTSUPP; 2706 2707 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2708 return -EFAULT; 2709 2710 return actor(dev, edata.data); 2711 } 2712 2713 static int 2714 ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) 2715 { 2716 if (!dev->ethtool_ops->flash_device) { 2717 req->devlink = netdev_to_devlink_get(dev); 2718 return 0; 2719 } 2720 2721 return dev->ethtool_ops->flash_device(dev, &req->efl); 2722 } 2723 2724 static int ethtool_set_dump(struct net_device *dev, 2725 void __user *useraddr) 2726 { 2727 struct ethtool_dump dump; 2728 2729 if (!dev->ethtool_ops->set_dump) 2730 return -EOPNOTSUPP; 2731 2732 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2733 return -EFAULT; 2734 2735 return dev->ethtool_ops->set_dump(dev, &dump); 2736 } 2737 2738 static int ethtool_get_dump_flag(struct net_device *dev, 2739 void __user *useraddr) 2740 { 2741 int ret; 2742 struct ethtool_dump dump; 2743 const struct ethtool_ops *ops = dev->ethtool_ops; 2744 2745 if (!ops->get_dump_flag) 2746 return -EOPNOTSUPP; 2747 2748 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2749 return -EFAULT; 2750 2751 ret = ops->get_dump_flag(dev, &dump); 2752 if (ret) 2753 return ret; 2754 2755 if (copy_to_user(useraddr, &dump, sizeof(dump))) 2756 return -EFAULT; 2757 return 0; 2758 } 2759 2760 static int ethtool_get_dump_data(struct net_device *dev, 2761 void __user *useraddr) 2762 { 2763 int ret; 2764 __u32 len; 2765 struct ethtool_dump dump, tmp; 2766 const struct ethtool_ops *ops = dev->ethtool_ops; 2767 void *data = NULL; 2768 2769 if (!ops->get_dump_data || !ops->get_dump_flag) 2770 return -EOPNOTSUPP; 2771 2772 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2773 return -EFAULT; 2774 2775 memset(&tmp, 0, sizeof(tmp)); 2776 tmp.cmd = ETHTOOL_GET_DUMP_FLAG; 2777 ret = ops->get_dump_flag(dev, &tmp); 2778 if (ret) 2779 return ret; 2780 2781 len = min(tmp.len, dump.len); 2782 if (!len) 2783 return -EFAULT; 2784 2785 /* Don't ever let the driver think there's more space available 2786 * than it requested with .get_dump_flag(). 2787 */ 2788 dump.len = len; 2789 2790 /* Always allocate enough space to hold the whole thing so that the 2791 * driver does not need to check the length and bother with partial 2792 * dumping. 2793 */ 2794 data = vzalloc(tmp.len); 2795 if (!data) 2796 return -ENOMEM; 2797 ret = ops->get_dump_data(dev, &dump, data); 2798 if (ret) 2799 goto out; 2800 2801 /* There are two sane possibilities: 2802 * 1. The driver's .get_dump_data() does not touch dump.len. 2803 * 2. Or it may set dump.len to how much it really writes, which 2804 * should be tmp.len (or len if it can do a partial dump). 2805 * In any case respond to userspace with the actual length of data 2806 * it's receiving. 2807 */ 2808 WARN_ON(dump.len != len && dump.len != tmp.len); 2809 dump.len = len; 2810 2811 if (copy_to_user(useraddr, &dump, sizeof(dump))) { 2812 ret = -EFAULT; 2813 goto out; 2814 } 2815 useraddr += offsetof(struct ethtool_dump, data); 2816 if (copy_to_user(useraddr, data, len)) 2817 ret = -EFAULT; 2818 out: 2819 vfree(data); 2820 return ret; 2821 } 2822 2823 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) 2824 { 2825 struct kernel_ethtool_ts_info kernel_info; 2826 struct ethtool_ts_info info = {}; 2827 int err; 2828 2829 err = __ethtool_get_ts_info(dev, &kernel_info); 2830 if (err) 2831 return err; 2832 2833 info.cmd = kernel_info.cmd; 2834 info.so_timestamping = kernel_info.so_timestamping; 2835 info.phc_index = kernel_info.phc_index; 2836 info.tx_types = kernel_info.tx_types; 2837 info.rx_filters = kernel_info.rx_filters; 2838 2839 if (copy_to_user(useraddr, &info, sizeof(info))) 2840 return -EFAULT; 2841 2842 return 0; 2843 } 2844 2845 int ethtool_get_module_info_call(struct net_device *dev, 2846 struct ethtool_modinfo *modinfo) 2847 { 2848 const struct ethtool_ops *ops = dev->ethtool_ops; 2849 struct phy_device *phydev = dev->phydev; 2850 2851 if (dev->ethtool->module_fw_flash_in_progress) 2852 return -EBUSY; 2853 2854 if (dev->sfp_bus) 2855 return sfp_get_module_info(dev->sfp_bus, modinfo); 2856 2857 if (phydev && phydev->drv && phydev->drv->module_info) 2858 return phydev->drv->module_info(phydev, modinfo); 2859 2860 if (ops->get_module_info) 2861 return ops->get_module_info(dev, modinfo); 2862 2863 return -EOPNOTSUPP; 2864 } 2865 2866 static int ethtool_get_module_info(struct net_device *dev, 2867 void __user *useraddr) 2868 { 2869 int ret; 2870 struct ethtool_modinfo modinfo; 2871 2872 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) 2873 return -EFAULT; 2874 2875 ret = ethtool_get_module_info_call(dev, &modinfo); 2876 if (ret) 2877 return ret; 2878 2879 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) 2880 return -EFAULT; 2881 2882 return 0; 2883 } 2884 2885 int ethtool_get_module_eeprom_call(struct net_device *dev, 2886 struct ethtool_eeprom *ee, u8 *data) 2887 { 2888 const struct ethtool_ops *ops = dev->ethtool_ops; 2889 struct phy_device *phydev = dev->phydev; 2890 2891 if (dev->ethtool->module_fw_flash_in_progress) 2892 return -EBUSY; 2893 2894 if (dev->sfp_bus) 2895 return sfp_get_module_eeprom(dev->sfp_bus, ee, data); 2896 2897 if (phydev && phydev->drv && phydev->drv->module_eeprom) 2898 return phydev->drv->module_eeprom(phydev, ee, data); 2899 2900 if (ops->get_module_eeprom) 2901 return ops->get_module_eeprom(dev, ee, data); 2902 2903 return -EOPNOTSUPP; 2904 } 2905 2906 static int ethtool_get_module_eeprom(struct net_device *dev, 2907 void __user *useraddr) 2908 { 2909 int ret; 2910 struct ethtool_modinfo modinfo; 2911 2912 ret = ethtool_get_module_info_call(dev, &modinfo); 2913 if (ret) 2914 return ret; 2915 2916 return ethtool_get_any_eeprom(dev, useraddr, 2917 ethtool_get_module_eeprom_call, 2918 modinfo.eeprom_len); 2919 } 2920 2921 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) 2922 { 2923 switch (tuna->id) { 2924 case ETHTOOL_RX_COPYBREAK: 2925 case ETHTOOL_TX_COPYBREAK: 2926 case ETHTOOL_TX_COPYBREAK_BUF_SIZE: 2927 if (tuna->len != sizeof(u32) || 2928 tuna->type_id != ETHTOOL_TUNABLE_U32) 2929 return -EINVAL; 2930 break; 2931 case ETHTOOL_PFC_PREVENTION_TOUT: 2932 if (tuna->len != sizeof(u16) || 2933 tuna->type_id != ETHTOOL_TUNABLE_U16) 2934 return -EINVAL; 2935 break; 2936 default: 2937 return -EINVAL; 2938 } 2939 2940 return 0; 2941 } 2942 2943 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) 2944 { 2945 int ret; 2946 struct ethtool_tunable tuna; 2947 const struct ethtool_ops *ops = dev->ethtool_ops; 2948 void *data; 2949 2950 if (!ops->get_tunable) 2951 return -EOPNOTSUPP; 2952 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2953 return -EFAULT; 2954 ret = ethtool_tunable_valid(&tuna); 2955 if (ret) 2956 return ret; 2957 data = kzalloc(tuna.len, GFP_USER); 2958 if (!data) 2959 return -ENOMEM; 2960 ret = ops->get_tunable(dev, &tuna, data); 2961 if (ret) 2962 goto out; 2963 useraddr += sizeof(tuna); 2964 ret = -EFAULT; 2965 if (copy_to_user(useraddr, data, tuna.len)) 2966 goto out; 2967 ret = 0; 2968 2969 out: 2970 kfree(data); 2971 return ret; 2972 } 2973 2974 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) 2975 { 2976 int ret; 2977 struct ethtool_tunable tuna; 2978 const struct ethtool_ops *ops = dev->ethtool_ops; 2979 void *data; 2980 2981 if (!ops->set_tunable) 2982 return -EOPNOTSUPP; 2983 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2984 return -EFAULT; 2985 ret = ethtool_tunable_valid(&tuna); 2986 if (ret) 2987 return ret; 2988 useraddr += sizeof(tuna); 2989 data = memdup_user(useraddr, tuna.len); 2990 if (IS_ERR(data)) 2991 return PTR_ERR(data); 2992 ret = ops->set_tunable(dev, &tuna, data); 2993 2994 kfree(data); 2995 return ret; 2996 } 2997 2998 static noinline_for_stack int 2999 ethtool_get_per_queue_coalesce(struct net_device *dev, 3000 void __user *useraddr, 3001 struct ethtool_per_queue_op *per_queue_opt) 3002 { 3003 u32 bit; 3004 int ret; 3005 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 3006 3007 if (!dev->ethtool_ops->get_per_queue_coalesce) 3008 return -EOPNOTSUPP; 3009 3010 useraddr += sizeof(*per_queue_opt); 3011 3012 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, 3013 MAX_NUM_QUEUE); 3014 3015 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 3016 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 3017 3018 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); 3019 if (ret != 0) 3020 return ret; 3021 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 3022 return -EFAULT; 3023 useraddr += sizeof(coalesce); 3024 } 3025 3026 return 0; 3027 } 3028 3029 static noinline_for_stack int 3030 ethtool_set_per_queue_coalesce(struct net_device *dev, 3031 void __user *useraddr, 3032 struct ethtool_per_queue_op *per_queue_opt) 3033 { 3034 u32 bit; 3035 int i, ret = 0; 3036 int n_queue; 3037 struct ethtool_coalesce *backup = NULL, *tmp = NULL; 3038 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 3039 3040 if ((!dev->ethtool_ops->set_per_queue_coalesce) || 3041 (!dev->ethtool_ops->get_per_queue_coalesce)) 3042 return -EOPNOTSUPP; 3043 3044 useraddr += sizeof(*per_queue_opt); 3045 3046 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); 3047 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); 3048 tmp = backup = kmalloc_objs(*backup, n_queue); 3049 if (!backup) 3050 return -ENOMEM; 3051 3052 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 3053 struct ethtool_coalesce coalesce; 3054 3055 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); 3056 if (ret != 0) 3057 goto roll_back; 3058 3059 tmp++; 3060 3061 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { 3062 ret = -EFAULT; 3063 goto roll_back; 3064 } 3065 3066 if (!ethtool_set_coalesce_supported(dev, &coalesce)) { 3067 ret = -EOPNOTSUPP; 3068 goto roll_back; 3069 } 3070 3071 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); 3072 if (ret != 0) 3073 goto roll_back; 3074 3075 useraddr += sizeof(coalesce); 3076 } 3077 3078 roll_back: 3079 if (ret != 0) { 3080 tmp = backup; 3081 for_each_set_bit(i, queue_mask, bit) { 3082 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); 3083 tmp++; 3084 } 3085 } 3086 kfree(backup); 3087 3088 return ret; 3089 } 3090 3091 static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, 3092 void __user *useraddr, u32 sub_cmd) 3093 { 3094 struct ethtool_per_queue_op per_queue_opt; 3095 3096 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) 3097 return -EFAULT; 3098 3099 if (per_queue_opt.sub_command != sub_cmd) 3100 return -EINVAL; 3101 3102 switch (per_queue_opt.sub_command) { 3103 case ETHTOOL_GCOALESCE: 3104 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); 3105 case ETHTOOL_SCOALESCE: 3106 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); 3107 default: 3108 return -EOPNOTSUPP; 3109 } 3110 } 3111 3112 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) 3113 { 3114 switch (tuna->id) { 3115 case ETHTOOL_PHY_DOWNSHIFT: 3116 case ETHTOOL_PHY_FAST_LINK_DOWN: 3117 if (tuna->len != sizeof(u8) || 3118 tuna->type_id != ETHTOOL_TUNABLE_U8) 3119 return -EINVAL; 3120 break; 3121 case ETHTOOL_PHY_EDPD: 3122 if (tuna->len != sizeof(u16) || 3123 tuna->type_id != ETHTOOL_TUNABLE_U16) 3124 return -EINVAL; 3125 break; 3126 default: 3127 return -EINVAL; 3128 } 3129 3130 return 0; 3131 } 3132 3133 static int get_phy_tunable(struct net_device *dev, void __user *useraddr) 3134 { 3135 struct phy_device *phydev = dev->phydev; 3136 struct ethtool_tunable tuna; 3137 bool phy_drv_tunable; 3138 void *data; 3139 int ret; 3140 3141 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 3142 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) 3143 return -EOPNOTSUPP; 3144 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 3145 return -EFAULT; 3146 ret = ethtool_phy_tunable_valid(&tuna); 3147 if (ret) 3148 return ret; 3149 data = kzalloc(tuna.len, GFP_USER); 3150 if (!data) 3151 return -ENOMEM; 3152 if (phy_drv_tunable) { 3153 mutex_lock(&phydev->lock); 3154 ret = phydev->drv->get_tunable(phydev, &tuna, data); 3155 mutex_unlock(&phydev->lock); 3156 } else { 3157 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); 3158 } 3159 if (ret) 3160 goto out; 3161 useraddr += sizeof(tuna); 3162 ret = -EFAULT; 3163 if (copy_to_user(useraddr, data, tuna.len)) 3164 goto out; 3165 ret = 0; 3166 3167 out: 3168 kfree(data); 3169 return ret; 3170 } 3171 3172 static int set_phy_tunable(struct net_device *dev, void __user *useraddr) 3173 { 3174 struct phy_device *phydev = dev->phydev; 3175 struct ethtool_tunable tuna; 3176 bool phy_drv_tunable; 3177 void *data; 3178 int ret; 3179 3180 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 3181 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) 3182 return -EOPNOTSUPP; 3183 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 3184 return -EFAULT; 3185 ret = ethtool_phy_tunable_valid(&tuna); 3186 if (ret) 3187 return ret; 3188 useraddr += sizeof(tuna); 3189 data = memdup_user(useraddr, tuna.len); 3190 if (IS_ERR(data)) 3191 return PTR_ERR(data); 3192 if (phy_drv_tunable) { 3193 mutex_lock(&phydev->lock); 3194 ret = phydev->drv->set_tunable(phydev, &tuna, data); 3195 mutex_unlock(&phydev->lock); 3196 } else { 3197 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); 3198 } 3199 3200 kfree(data); 3201 return ret; 3202 } 3203 3204 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) 3205 { 3206 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; 3207 int rc; 3208 3209 if (!dev->ethtool_ops->get_fecparam) 3210 return -EOPNOTSUPP; 3211 3212 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); 3213 if (rc) 3214 return rc; 3215 3216 if (WARN_ON_ONCE(fecparam.reserved)) 3217 fecparam.reserved = 0; 3218 3219 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) 3220 return -EFAULT; 3221 return 0; 3222 } 3223 3224 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) 3225 { 3226 struct ethtool_fecparam fecparam; 3227 3228 if (!dev->ethtool_ops->set_fecparam) 3229 return -EOPNOTSUPP; 3230 3231 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) 3232 return -EFAULT; 3233 3234 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) 3235 return -EINVAL; 3236 3237 fecparam.active_fec = 0; 3238 fecparam.reserved = 0; 3239 3240 return dev->ethtool_ops->set_fecparam(dev, &fecparam); 3241 } 3242 3243 /* The main entry point in this file. Called from net/core/dev_ioctl.c */ 3244 3245 static int 3246 __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, 3247 u32 ethcmd, struct ethtool_devlink_compat *devlink_state) 3248 { 3249 struct net_device *dev; 3250 u32 sub_cmd; 3251 int rc; 3252 netdev_features_t old_features; 3253 3254 dev = __dev_get_by_name(net, ifr->ifr_name); 3255 if (!dev) 3256 return -ENODEV; 3257 3258 if (ethcmd == ETHTOOL_PERQUEUE) { 3259 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) 3260 return -EFAULT; 3261 } else { 3262 sub_cmd = ethcmd; 3263 } 3264 /* Allow some commands to be done by anyone */ 3265 switch (sub_cmd) { 3266 case ETHTOOL_GSET: 3267 case ETHTOOL_GDRVINFO: 3268 case ETHTOOL_GMSGLVL: 3269 case ETHTOOL_GLINK: 3270 case ETHTOOL_GCOALESCE: 3271 case ETHTOOL_GRINGPARAM: 3272 case ETHTOOL_GPAUSEPARAM: 3273 case ETHTOOL_GRXCSUM: 3274 case ETHTOOL_GTXCSUM: 3275 case ETHTOOL_GSG: 3276 case ETHTOOL_GSSET_INFO: 3277 case ETHTOOL_GSTRINGS: 3278 case ETHTOOL_GSTATS: 3279 case ETHTOOL_GPHYSTATS: 3280 case ETHTOOL_GTSO: 3281 case ETHTOOL_GPERMADDR: 3282 case ETHTOOL_GUFO: 3283 case ETHTOOL_GGSO: 3284 case ETHTOOL_GGRO: 3285 case ETHTOOL_GFLAGS: 3286 case ETHTOOL_GPFLAGS: 3287 case ETHTOOL_GRXFH: 3288 case ETHTOOL_GRXRINGS: 3289 case ETHTOOL_GRXCLSRLCNT: 3290 case ETHTOOL_GRXCLSRULE: 3291 case ETHTOOL_GRXCLSRLALL: 3292 case ETHTOOL_GRXFHINDIR: 3293 case ETHTOOL_GRSSH: 3294 case ETHTOOL_GFEATURES: 3295 case ETHTOOL_GCHANNELS: 3296 case ETHTOOL_GET_TS_INFO: 3297 case ETHTOOL_GEEE: 3298 case ETHTOOL_GTUNABLE: 3299 case ETHTOOL_PHY_GTUNABLE: 3300 case ETHTOOL_GLINKSETTINGS: 3301 case ETHTOOL_GFECPARAM: 3302 break; 3303 default: 3304 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 3305 return -EPERM; 3306 } 3307 3308 netdev_lock_ops(dev); 3309 if (dev->dev.parent) 3310 pm_runtime_get_sync(dev->dev.parent); 3311 3312 if (!netif_device_present(dev)) { 3313 rc = -ENODEV; 3314 goto out; 3315 } 3316 3317 if (dev->ethtool_ops->begin) { 3318 rc = dev->ethtool_ops->begin(dev); 3319 if (rc < 0) 3320 goto out; 3321 } 3322 old_features = dev->features; 3323 3324 switch (ethcmd) { 3325 case ETHTOOL_GSET: 3326 rc = ethtool_get_settings(dev, useraddr); 3327 break; 3328 case ETHTOOL_SSET: 3329 rc = ethtool_set_settings(dev, useraddr); 3330 break; 3331 case ETHTOOL_GDRVINFO: 3332 rc = ethtool_get_drvinfo(dev, devlink_state); 3333 break; 3334 case ETHTOOL_GREGS: 3335 rc = ethtool_get_regs(dev, useraddr); 3336 break; 3337 case ETHTOOL_GWOL: 3338 rc = ethtool_get_wol(dev, useraddr); 3339 break; 3340 case ETHTOOL_SWOL: 3341 rc = ethtool_set_wol(dev, useraddr); 3342 break; 3343 case ETHTOOL_GMSGLVL: 3344 rc = ethtool_get_value(dev, useraddr, ethcmd, 3345 dev->ethtool_ops->get_msglevel); 3346 break; 3347 case ETHTOOL_SMSGLVL: 3348 rc = ethtool_set_value_void(dev, useraddr, 3349 dev->ethtool_ops->set_msglevel); 3350 if (!rc) 3351 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF); 3352 break; 3353 case ETHTOOL_GEEE: 3354 rc = ethtool_get_eee(dev, useraddr); 3355 break; 3356 case ETHTOOL_SEEE: 3357 rc = ethtool_set_eee(dev, useraddr); 3358 break; 3359 case ETHTOOL_NWAY_RST: 3360 rc = ethtool_nway_reset(dev); 3361 break; 3362 case ETHTOOL_GLINK: 3363 rc = ethtool_get_link(dev, useraddr); 3364 break; 3365 case ETHTOOL_GEEPROM: 3366 rc = ethtool_get_eeprom(dev, useraddr); 3367 break; 3368 case ETHTOOL_SEEPROM: 3369 rc = ethtool_set_eeprom(dev, useraddr); 3370 break; 3371 case ETHTOOL_GCOALESCE: 3372 rc = ethtool_get_coalesce(dev, useraddr); 3373 break; 3374 case ETHTOOL_SCOALESCE: 3375 rc = ethtool_set_coalesce(dev, useraddr); 3376 break; 3377 case ETHTOOL_GRINGPARAM: 3378 rc = ethtool_get_ringparam(dev, useraddr); 3379 break; 3380 case ETHTOOL_SRINGPARAM: 3381 rc = ethtool_set_ringparam(dev, useraddr); 3382 break; 3383 case ETHTOOL_GPAUSEPARAM: 3384 rc = ethtool_get_pauseparam(dev, useraddr); 3385 break; 3386 case ETHTOOL_SPAUSEPARAM: 3387 rc = ethtool_set_pauseparam(dev, useraddr); 3388 break; 3389 case ETHTOOL_TEST: 3390 rc = ethtool_self_test(dev, useraddr); 3391 break; 3392 case ETHTOOL_GSTRINGS: 3393 rc = ethtool_get_strings(dev, useraddr); 3394 break; 3395 case ETHTOOL_PHYS_ID: 3396 rc = ethtool_phys_id(dev, useraddr); 3397 break; 3398 case ETHTOOL_GSTATS: 3399 rc = ethtool_get_stats(dev, useraddr); 3400 break; 3401 case ETHTOOL_GPERMADDR: 3402 rc = ethtool_get_perm_addr(dev, useraddr); 3403 break; 3404 case ETHTOOL_GFLAGS: 3405 rc = ethtool_get_value(dev, useraddr, ethcmd, 3406 __ethtool_get_flags); 3407 break; 3408 case ETHTOOL_SFLAGS: 3409 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); 3410 break; 3411 case ETHTOOL_GPFLAGS: 3412 rc = ethtool_get_value(dev, useraddr, ethcmd, 3413 dev->ethtool_ops->get_priv_flags); 3414 if (!rc) 3415 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF); 3416 break; 3417 case ETHTOOL_SPFLAGS: 3418 rc = ethtool_set_value(dev, useraddr, 3419 dev->ethtool_ops->set_priv_flags); 3420 break; 3421 case ETHTOOL_GRXFH: 3422 rc = ethtool_get_rxfh_fields(dev, ethcmd, useraddr); 3423 break; 3424 case ETHTOOL_SRXFH: 3425 rc = ethtool_set_rxfh_fields(dev, ethcmd, useraddr); 3426 break; 3427 case ETHTOOL_GRXRINGS: 3428 rc = ethtool_get_rxrings(dev, ethcmd, useraddr); 3429 break; 3430 case ETHTOOL_GRXCLSRLCNT: 3431 case ETHTOOL_GRXCLSRULE: 3432 case ETHTOOL_GRXCLSRLALL: 3433 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); 3434 break; 3435 case ETHTOOL_SRXCLSRLDEL: 3436 case ETHTOOL_SRXCLSRLINS: 3437 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); 3438 break; 3439 case ETHTOOL_FLASHDEV: 3440 rc = ethtool_flash_device(dev, devlink_state); 3441 break; 3442 case ETHTOOL_RESET: 3443 rc = ethtool_reset(dev, useraddr); 3444 break; 3445 case ETHTOOL_GSSET_INFO: 3446 rc = ethtool_get_sset_info(dev, useraddr); 3447 break; 3448 case ETHTOOL_GRXFHINDIR: 3449 rc = ethtool_get_rxfh_indir(dev, useraddr); 3450 break; 3451 case ETHTOOL_SRXFHINDIR: 3452 rc = ethtool_set_rxfh_indir(dev, useraddr); 3453 break; 3454 case ETHTOOL_GRSSH: 3455 rc = ethtool_get_rxfh(dev, useraddr); 3456 break; 3457 case ETHTOOL_SRSSH: 3458 rc = ethtool_set_rxfh(dev, useraddr); 3459 break; 3460 case ETHTOOL_GFEATURES: 3461 rc = ethtool_get_features(dev, useraddr); 3462 break; 3463 case ETHTOOL_SFEATURES: 3464 rc = ethtool_set_features(dev, useraddr); 3465 break; 3466 case ETHTOOL_GTXCSUM: 3467 case ETHTOOL_GRXCSUM: 3468 case ETHTOOL_GSG: 3469 case ETHTOOL_GTSO: 3470 case ETHTOOL_GGSO: 3471 case ETHTOOL_GGRO: 3472 rc = ethtool_get_one_feature(dev, useraddr, ethcmd); 3473 break; 3474 case ETHTOOL_STXCSUM: 3475 case ETHTOOL_SRXCSUM: 3476 case ETHTOOL_SSG: 3477 case ETHTOOL_STSO: 3478 case ETHTOOL_SGSO: 3479 case ETHTOOL_SGRO: 3480 rc = ethtool_set_one_feature(dev, useraddr, ethcmd); 3481 break; 3482 case ETHTOOL_GCHANNELS: 3483 rc = ethtool_get_channels(dev, useraddr); 3484 break; 3485 case ETHTOOL_SCHANNELS: 3486 rc = ethtool_set_channels(dev, useraddr); 3487 break; 3488 case ETHTOOL_SET_DUMP: 3489 rc = ethtool_set_dump(dev, useraddr); 3490 break; 3491 case ETHTOOL_GET_DUMP_FLAG: 3492 rc = ethtool_get_dump_flag(dev, useraddr); 3493 break; 3494 case ETHTOOL_GET_DUMP_DATA: 3495 rc = ethtool_get_dump_data(dev, useraddr); 3496 break; 3497 case ETHTOOL_GET_TS_INFO: 3498 rc = ethtool_get_ts_info(dev, useraddr); 3499 break; 3500 case ETHTOOL_GMODULEINFO: 3501 rc = ethtool_get_module_info(dev, useraddr); 3502 break; 3503 case ETHTOOL_GMODULEEEPROM: 3504 rc = ethtool_get_module_eeprom(dev, useraddr); 3505 break; 3506 case ETHTOOL_GTUNABLE: 3507 rc = ethtool_get_tunable(dev, useraddr); 3508 break; 3509 case ETHTOOL_STUNABLE: 3510 rc = ethtool_set_tunable(dev, useraddr); 3511 break; 3512 case ETHTOOL_GPHYSTATS: 3513 rc = ethtool_get_phy_stats(dev, useraddr); 3514 break; 3515 case ETHTOOL_PERQUEUE: 3516 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); 3517 break; 3518 case ETHTOOL_GLINKSETTINGS: 3519 rc = ethtool_get_link_ksettings(dev, useraddr); 3520 break; 3521 case ETHTOOL_SLINKSETTINGS: 3522 rc = ethtool_set_link_ksettings(dev, useraddr); 3523 break; 3524 case ETHTOOL_PHY_GTUNABLE: 3525 rc = get_phy_tunable(dev, useraddr); 3526 break; 3527 case ETHTOOL_PHY_STUNABLE: 3528 rc = set_phy_tunable(dev, useraddr); 3529 break; 3530 case ETHTOOL_GFECPARAM: 3531 rc = ethtool_get_fecparam(dev, useraddr); 3532 break; 3533 case ETHTOOL_SFECPARAM: 3534 rc = ethtool_set_fecparam(dev, useraddr); 3535 break; 3536 default: 3537 rc = -EOPNOTSUPP; 3538 } 3539 3540 if (dev->ethtool_ops->complete) 3541 dev->ethtool_ops->complete(dev); 3542 3543 if (old_features != dev->features) 3544 netdev_features_change(dev); 3545 out: 3546 if (dev->dev.parent) 3547 pm_runtime_put(dev->dev.parent); 3548 netdev_unlock_ops(dev); 3549 3550 return rc; 3551 } 3552 3553 int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) 3554 { 3555 struct ethtool_devlink_compat *state; 3556 u32 ethcmd; 3557 int rc; 3558 3559 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) 3560 return -EFAULT; 3561 3562 state = kzalloc_obj(*state); 3563 if (!state) 3564 return -ENOMEM; 3565 3566 switch (ethcmd) { 3567 case ETHTOOL_FLASHDEV: 3568 if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { 3569 rc = -EFAULT; 3570 goto exit_free; 3571 } 3572 state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; 3573 break; 3574 } 3575 3576 rtnl_lock(); 3577 rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); 3578 rtnl_unlock(); 3579 if (rc) 3580 goto exit_free; 3581 3582 switch (ethcmd) { 3583 case ETHTOOL_FLASHDEV: 3584 if (state->devlink) 3585 rc = devlink_compat_flash_update(state->devlink, 3586 state->efl.data); 3587 break; 3588 case ETHTOOL_GDRVINFO: 3589 if (state->devlink) 3590 devlink_compat_running_version(state->devlink, 3591 state->info.fw_version, 3592 sizeof(state->info.fw_version)); 3593 if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { 3594 rc = -EFAULT; 3595 goto exit_free; 3596 } 3597 break; 3598 } 3599 3600 exit_free: 3601 if (state->devlink) 3602 devlink_put(state->devlink); 3603 kfree(state); 3604 return rc; 3605 } 3606 3607 struct ethtool_rx_flow_key { 3608 struct flow_dissector_key_basic basic; 3609 union { 3610 struct flow_dissector_key_ipv4_addrs ipv4; 3611 struct flow_dissector_key_ipv6_addrs ipv6; 3612 }; 3613 struct flow_dissector_key_ports tp; 3614 struct flow_dissector_key_ip ip; 3615 struct flow_dissector_key_vlan vlan; 3616 struct flow_dissector_key_eth_addrs eth_addrs; 3617 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ 3618 3619 struct ethtool_rx_flow_match { 3620 struct flow_dissector dissector; 3621 struct ethtool_rx_flow_key key; 3622 struct ethtool_rx_flow_key mask; 3623 }; 3624 3625 struct ethtool_rx_flow_rule * 3626 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) 3627 { 3628 const struct ethtool_rx_flow_spec *fs = input->fs; 3629 struct ethtool_rx_flow_match *match; 3630 struct ethtool_rx_flow_rule *flow; 3631 struct flow_action_entry *act; 3632 3633 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + 3634 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); 3635 if (!flow) 3636 return ERR_PTR(-ENOMEM); 3637 3638 /* ethtool_rx supports only one single action per rule. */ 3639 flow->rule = flow_rule_alloc(1); 3640 if (!flow->rule) { 3641 kfree(flow); 3642 return ERR_PTR(-ENOMEM); 3643 } 3644 3645 match = (struct ethtool_rx_flow_match *)flow->priv; 3646 flow->rule->match.dissector = &match->dissector; 3647 flow->rule->match.mask = &match->mask; 3648 flow->rule->match.key = &match->key; 3649 3650 match->mask.basic.n_proto = htons(0xffff); 3651 3652 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3653 case ETHER_FLOW: { 3654 const struct ethhdr *ether_spec, *ether_m_spec; 3655 3656 ether_spec = &fs->h_u.ether_spec; 3657 ether_m_spec = &fs->m_u.ether_spec; 3658 3659 if (!is_zero_ether_addr(ether_m_spec->h_source)) { 3660 ether_addr_copy(match->key.eth_addrs.src, 3661 ether_spec->h_source); 3662 ether_addr_copy(match->mask.eth_addrs.src, 3663 ether_m_spec->h_source); 3664 } 3665 if (!is_zero_ether_addr(ether_m_spec->h_dest)) { 3666 ether_addr_copy(match->key.eth_addrs.dst, 3667 ether_spec->h_dest); 3668 ether_addr_copy(match->mask.eth_addrs.dst, 3669 ether_m_spec->h_dest); 3670 } 3671 if (ether_m_spec->h_proto) { 3672 match->key.basic.n_proto = ether_spec->h_proto; 3673 match->mask.basic.n_proto = ether_m_spec->h_proto; 3674 } 3675 } 3676 break; 3677 case TCP_V4_FLOW: 3678 case UDP_V4_FLOW: { 3679 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; 3680 3681 match->key.basic.n_proto = htons(ETH_P_IP); 3682 3683 v4_spec = &fs->h_u.tcp_ip4_spec; 3684 v4_m_spec = &fs->m_u.tcp_ip4_spec; 3685 3686 if (v4_m_spec->ip4src) { 3687 match->key.ipv4.src = v4_spec->ip4src; 3688 match->mask.ipv4.src = v4_m_spec->ip4src; 3689 } 3690 if (v4_m_spec->ip4dst) { 3691 match->key.ipv4.dst = v4_spec->ip4dst; 3692 match->mask.ipv4.dst = v4_m_spec->ip4dst; 3693 } 3694 if (v4_m_spec->ip4src || 3695 v4_m_spec->ip4dst) { 3696 match->dissector.used_keys |= 3697 BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS); 3698 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = 3699 offsetof(struct ethtool_rx_flow_key, ipv4); 3700 } 3701 if (v4_m_spec->psrc) { 3702 match->key.tp.src = v4_spec->psrc; 3703 match->mask.tp.src = v4_m_spec->psrc; 3704 } 3705 if (v4_m_spec->pdst) { 3706 match->key.tp.dst = v4_spec->pdst; 3707 match->mask.tp.dst = v4_m_spec->pdst; 3708 } 3709 if (v4_m_spec->psrc || 3710 v4_m_spec->pdst) { 3711 match->dissector.used_keys |= 3712 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3713 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3714 offsetof(struct ethtool_rx_flow_key, tp); 3715 } 3716 if (v4_m_spec->tos) { 3717 match->key.ip.tos = v4_spec->tos; 3718 match->mask.ip.tos = v4_m_spec->tos; 3719 match->dissector.used_keys |= 3720 BIT(FLOW_DISSECTOR_KEY_IP); 3721 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3722 offsetof(struct ethtool_rx_flow_key, ip); 3723 } 3724 } 3725 break; 3726 case TCP_V6_FLOW: 3727 case UDP_V6_FLOW: { 3728 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; 3729 3730 match->key.basic.n_proto = htons(ETH_P_IPV6); 3731 3732 v6_spec = &fs->h_u.tcp_ip6_spec; 3733 v6_m_spec = &fs->m_u.tcp_ip6_spec; 3734 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) { 3735 memcpy(&match->key.ipv6.src, v6_spec->ip6src, 3736 sizeof(match->key.ipv6.src)); 3737 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, 3738 sizeof(match->mask.ipv6.src)); 3739 } 3740 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3741 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, 3742 sizeof(match->key.ipv6.dst)); 3743 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, 3744 sizeof(match->mask.ipv6.dst)); 3745 } 3746 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) || 3747 !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3748 match->dissector.used_keys |= 3749 BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS); 3750 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = 3751 offsetof(struct ethtool_rx_flow_key, ipv6); 3752 } 3753 if (v6_m_spec->psrc) { 3754 match->key.tp.src = v6_spec->psrc; 3755 match->mask.tp.src = v6_m_spec->psrc; 3756 } 3757 if (v6_m_spec->pdst) { 3758 match->key.tp.dst = v6_spec->pdst; 3759 match->mask.tp.dst = v6_m_spec->pdst; 3760 } 3761 if (v6_m_spec->psrc || 3762 v6_m_spec->pdst) { 3763 match->dissector.used_keys |= 3764 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3765 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3766 offsetof(struct ethtool_rx_flow_key, tp); 3767 } 3768 if (v6_m_spec->tclass) { 3769 match->key.ip.tos = v6_spec->tclass; 3770 match->mask.ip.tos = v6_m_spec->tclass; 3771 match->dissector.used_keys |= 3772 BIT_ULL(FLOW_DISSECTOR_KEY_IP); 3773 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3774 offsetof(struct ethtool_rx_flow_key, ip); 3775 } 3776 } 3777 break; 3778 default: 3779 ethtool_rx_flow_rule_destroy(flow); 3780 return ERR_PTR(-EINVAL); 3781 } 3782 3783 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3784 case TCP_V4_FLOW: 3785 case TCP_V6_FLOW: 3786 match->key.basic.ip_proto = IPPROTO_TCP; 3787 match->mask.basic.ip_proto = 0xff; 3788 break; 3789 case UDP_V4_FLOW: 3790 case UDP_V6_FLOW: 3791 match->key.basic.ip_proto = IPPROTO_UDP; 3792 match->mask.basic.ip_proto = 0xff; 3793 break; 3794 } 3795 3796 match->dissector.used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_BASIC); 3797 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = 3798 offsetof(struct ethtool_rx_flow_key, basic); 3799 3800 if (fs->flow_type & FLOW_EXT) { 3801 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3802 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3803 3804 if (ext_m_spec->vlan_etype) { 3805 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; 3806 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; 3807 } 3808 3809 if (ext_m_spec->vlan_tci) { 3810 match->key.vlan.vlan_id = 3811 ntohs(ext_h_spec->vlan_tci) & 0x0fff; 3812 match->mask.vlan.vlan_id = 3813 ntohs(ext_m_spec->vlan_tci) & 0x0fff; 3814 3815 match->key.vlan.vlan_dei = 3816 !!(ext_h_spec->vlan_tci & htons(0x1000)); 3817 match->mask.vlan.vlan_dei = 3818 !!(ext_m_spec->vlan_tci & htons(0x1000)); 3819 3820 match->key.vlan.vlan_priority = 3821 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; 3822 match->mask.vlan.vlan_priority = 3823 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; 3824 } 3825 3826 if (ext_m_spec->vlan_etype || 3827 ext_m_spec->vlan_tci) { 3828 match->dissector.used_keys |= 3829 BIT_ULL(FLOW_DISSECTOR_KEY_VLAN); 3830 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = 3831 offsetof(struct ethtool_rx_flow_key, vlan); 3832 } 3833 } 3834 if (fs->flow_type & FLOW_MAC_EXT) { 3835 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3836 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3837 3838 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, 3839 ETH_ALEN); 3840 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, 3841 ETH_ALEN); 3842 3843 match->dissector.used_keys |= 3844 BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS); 3845 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = 3846 offsetof(struct ethtool_rx_flow_key, eth_addrs); 3847 } 3848 3849 act = &flow->rule->action.entries[0]; 3850 switch (fs->ring_cookie) { 3851 case RX_CLS_FLOW_DISC: 3852 act->id = FLOW_ACTION_DROP; 3853 break; 3854 case RX_CLS_FLOW_WAKE: 3855 act->id = FLOW_ACTION_WAKE; 3856 break; 3857 default: 3858 act->id = FLOW_ACTION_QUEUE; 3859 if (fs->flow_type & FLOW_RSS) 3860 act->queue.ctx = input->rss_ctx; 3861 3862 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); 3863 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); 3864 break; 3865 } 3866 3867 return flow; 3868 } 3869 EXPORT_SYMBOL(ethtool_rx_flow_rule_create); 3870 3871 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) 3872 { 3873 kfree(flow->rule); 3874 kfree(flow); 3875 } 3876 EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); 3877