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