1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * net/core/ethtool.c - Ethtool ioctl handler 4 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx> 5 * 6 * This file is where we call all the ethtool_ops commands to get 7 * the information ethtool needs. 8 */ 9 10 #include <linux/compat.h> 11 #include <linux/etherdevice.h> 12 #include <linux/module.h> 13 #include <linux/types.h> 14 #include <linux/capability.h> 15 #include <linux/errno.h> 16 #include <linux/ethtool.h> 17 #include <linux/netdevice.h> 18 #include <linux/net_tstamp.h> 19 #include <linux/phy.h> 20 #include <linux/bitops.h> 21 #include <linux/uaccess.h> 22 #include <linux/vmalloc.h> 23 #include <linux/sfp.h> 24 #include <linux/slab.h> 25 #include <linux/rtnetlink.h> 26 #include <linux/sched/signal.h> 27 #include <linux/net.h> 28 #include <linux/pm_runtime.h> 29 #include <linux/utsname.h> 30 #include <net/devlink.h> 31 #include <net/ipv6.h> 32 #include <net/xdp_sock_drv.h> 33 #include <net/flow_offload.h> 34 #include <net/netdev_lock.h> 35 #include <linux/ethtool_netlink.h> 36 #include "common.h" 37 38 /* State held across locks and calls for commands which have devlink fallback */ 39 struct ethtool_devlink_compat { 40 struct devlink *devlink; 41 union { 42 struct ethtool_flash efl; 43 struct ethtool_drvinfo info; 44 }; 45 }; 46 47 static struct devlink *netdev_to_devlink_get(struct net_device *dev) 48 { 49 if (!dev->devlink_port) 50 return NULL; 51 return devlink_try_get(dev->devlink_port->devlink); 52 } 53 54 /* 55 * Some useful ethtool_ops methods that're device independent. 56 * If we find that all drivers want to do the same thing here, 57 * we can turn these into dev_() function calls. 58 */ 59 60 u32 ethtool_op_get_link(struct net_device *dev) 61 { 62 /* Synchronize carrier state with link watch, see also rtnl_getlink() */ 63 __linkwatch_sync_dev(dev); 64 65 return netif_carrier_ok(dev) ? 1 : 0; 66 } 67 EXPORT_SYMBOL(ethtool_op_get_link); 68 69 int ethtool_op_get_ts_info(struct net_device *dev, 70 struct kernel_ethtool_ts_info *info) 71 { 72 info->so_timestamping = 73 SOF_TIMESTAMPING_TX_SOFTWARE | 74 SOF_TIMESTAMPING_RX_SOFTWARE | 75 SOF_TIMESTAMPING_SOFTWARE; 76 info->phc_index = -1; 77 return 0; 78 } 79 EXPORT_SYMBOL(ethtool_op_get_ts_info); 80 81 /* Handlers for each ethtool command */ 82 83 static int ethtool_get_features(struct net_device *dev, void __user *useraddr) 84 { 85 struct ethtool_gfeatures cmd = { 86 .cmd = ETHTOOL_GFEATURES, 87 .size = ETHTOOL_DEV_FEATURE_WORDS, 88 }; 89 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 90 u32 __user *sizeaddr; 91 u32 copy_size; 92 int i; 93 94 /* in case feature bits run out again */ 95 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); 96 97 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 98 features[i].available = (u32)(dev->hw_features >> (32 * i)); 99 features[i].requested = (u32)(dev->wanted_features >> (32 * i)); 100 features[i].active = (u32)(dev->features >> (32 * i)); 101 features[i].never_changed = 102 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); 103 } 104 105 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); 106 if (get_user(copy_size, sizeaddr)) 107 return -EFAULT; 108 109 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) 110 copy_size = ETHTOOL_DEV_FEATURE_WORDS; 111 112 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 113 return -EFAULT; 114 useraddr += sizeof(cmd); 115 if (copy_to_user(useraddr, features, 116 array_size(copy_size, sizeof(*features)))) 117 return -EFAULT; 118 119 return 0; 120 } 121 122 static int ethtool_set_features(struct net_device *dev, void __user *useraddr) 123 { 124 struct ethtool_sfeatures cmd; 125 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 126 netdev_features_t wanted = 0, valid = 0; 127 int i, ret = 0; 128 129 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 130 return -EFAULT; 131 useraddr += sizeof(cmd); 132 133 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) 134 return -EINVAL; 135 136 if (copy_from_user(features, useraddr, sizeof(features))) 137 return -EFAULT; 138 139 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 140 valid |= (netdev_features_t)features[i].valid << (32 * i); 141 wanted |= (netdev_features_t)features[i].requested << (32 * i); 142 } 143 144 if (valid & ~NETIF_F_ETHTOOL_BITS) 145 return -EINVAL; 146 147 if (valid & ~dev->hw_features) { 148 valid &= dev->hw_features; 149 ret |= ETHTOOL_F_UNSUPPORTED; 150 } 151 152 dev->wanted_features &= ~valid; 153 dev->wanted_features |= wanted & valid; 154 __netdev_update_features(dev); 155 156 if ((dev->wanted_features ^ dev->features) & valid) 157 ret |= ETHTOOL_F_WISH; 158 159 return ret; 160 } 161 162 static int __ethtool_get_sset_count(struct net_device *dev, int sset) 163 { 164 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 165 const struct ethtool_ops *ops = dev->ethtool_ops; 166 167 if (sset == ETH_SS_FEATURES) 168 return ARRAY_SIZE(netdev_features_strings); 169 170 if (sset == ETH_SS_RSS_HASH_FUNCS) 171 return ARRAY_SIZE(rss_hash_func_strings); 172 173 if (sset == ETH_SS_TUNABLES) 174 return ARRAY_SIZE(tunable_strings); 175 176 if (sset == ETH_SS_PHY_TUNABLES) 177 return ARRAY_SIZE(phy_tunable_strings); 178 179 if (sset == ETH_SS_PHY_STATS && dev->phydev && 180 !ops->get_ethtool_phy_stats && 181 phy_ops && phy_ops->get_sset_count) 182 return phy_ops->get_sset_count(dev->phydev); 183 184 if (sset == ETH_SS_LINK_MODES) 185 return __ETHTOOL_LINK_MODE_MASK_NBITS; 186 187 if (ops->get_sset_count && ops->get_strings) 188 return ops->get_sset_count(dev, sset); 189 else 190 return -EOPNOTSUPP; 191 } 192 193 static void __ethtool_get_strings(struct net_device *dev, 194 u32 stringset, u8 *data) 195 { 196 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 197 const struct ethtool_ops *ops = dev->ethtool_ops; 198 199 if (stringset == ETH_SS_FEATURES) 200 memcpy(data, netdev_features_strings, 201 sizeof(netdev_features_strings)); 202 else if (stringset == ETH_SS_RSS_HASH_FUNCS) 203 memcpy(data, rss_hash_func_strings, 204 sizeof(rss_hash_func_strings)); 205 else if (stringset == ETH_SS_TUNABLES) 206 memcpy(data, tunable_strings, sizeof(tunable_strings)); 207 else if (stringset == ETH_SS_PHY_TUNABLES) 208 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); 209 else if (stringset == ETH_SS_PHY_STATS && dev->phydev && 210 !ops->get_ethtool_phy_stats && phy_ops && 211 phy_ops->get_strings) 212 phy_ops->get_strings(dev->phydev, data); 213 else if (stringset == ETH_SS_LINK_MODES) 214 memcpy(data, link_mode_names, 215 __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN); 216 else 217 /* ops->get_strings is valid because checked earlier */ 218 ops->get_strings(dev, stringset, data); 219 } 220 221 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) 222 { 223 /* feature masks of legacy discrete ethtool ops */ 224 225 switch (eth_cmd) { 226 case ETHTOOL_GTXCSUM: 227 case ETHTOOL_STXCSUM: 228 return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC | 229 NETIF_F_SCTP_CRC; 230 case ETHTOOL_GRXCSUM: 231 case ETHTOOL_SRXCSUM: 232 return NETIF_F_RXCSUM; 233 case ETHTOOL_GSG: 234 case ETHTOOL_SSG: 235 return NETIF_F_SG | NETIF_F_FRAGLIST; 236 case ETHTOOL_GTSO: 237 case ETHTOOL_STSO: 238 return NETIF_F_ALL_TSO; 239 case ETHTOOL_GGSO: 240 case ETHTOOL_SGSO: 241 return NETIF_F_GSO; 242 case ETHTOOL_GGRO: 243 case ETHTOOL_SGRO: 244 return NETIF_F_GRO; 245 default: 246 BUG(); 247 } 248 } 249 250 static int ethtool_get_one_feature(struct net_device *dev, 251 char __user *useraddr, u32 ethcmd) 252 { 253 netdev_features_t mask = ethtool_get_feature_mask(ethcmd); 254 struct ethtool_value edata = { 255 .cmd = ethcmd, 256 .data = !!(dev->features & mask), 257 }; 258 259 if (copy_to_user(useraddr, &edata, sizeof(edata))) 260 return -EFAULT; 261 return 0; 262 } 263 264 static int ethtool_set_one_feature(struct net_device *dev, 265 void __user *useraddr, u32 ethcmd) 266 { 267 struct ethtool_value edata; 268 netdev_features_t mask; 269 270 if (copy_from_user(&edata, useraddr, sizeof(edata))) 271 return -EFAULT; 272 273 mask = ethtool_get_feature_mask(ethcmd); 274 mask &= dev->hw_features; 275 if (!mask) 276 return -EOPNOTSUPP; 277 278 if (edata.data) 279 dev->wanted_features |= mask; 280 else 281 dev->wanted_features &= ~mask; 282 283 __netdev_update_features(dev); 284 285 return 0; 286 } 287 288 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ 289 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) 290 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ 291 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ 292 NETIF_F_RXHASH) 293 294 static u32 __ethtool_get_flags(struct net_device *dev) 295 { 296 u32 flags = 0; 297 298 if (dev->features & NETIF_F_LRO) 299 flags |= ETH_FLAG_LRO; 300 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 301 flags |= ETH_FLAG_RXVLAN; 302 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) 303 flags |= ETH_FLAG_TXVLAN; 304 if (dev->features & NETIF_F_NTUPLE) 305 flags |= ETH_FLAG_NTUPLE; 306 if (dev->features & NETIF_F_RXHASH) 307 flags |= ETH_FLAG_RXHASH; 308 309 return flags; 310 } 311 312 static int __ethtool_set_flags(struct net_device *dev, u32 data) 313 { 314 netdev_features_t features = 0, changed; 315 316 if (data & ~ETH_ALL_FLAGS) 317 return -EINVAL; 318 319 if (data & ETH_FLAG_LRO) 320 features |= NETIF_F_LRO; 321 if (data & ETH_FLAG_RXVLAN) 322 features |= NETIF_F_HW_VLAN_CTAG_RX; 323 if (data & ETH_FLAG_TXVLAN) 324 features |= NETIF_F_HW_VLAN_CTAG_TX; 325 if (data & ETH_FLAG_NTUPLE) 326 features |= NETIF_F_NTUPLE; 327 if (data & ETH_FLAG_RXHASH) 328 features |= NETIF_F_RXHASH; 329 330 /* allow changing only bits set in hw_features */ 331 changed = (features ^ dev->features) & ETH_ALL_FEATURES; 332 if (changed & ~dev->hw_features) 333 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; 334 335 dev->wanted_features = 336 (dev->wanted_features & ~changed) | (features & changed); 337 338 __netdev_update_features(dev); 339 340 return 0; 341 } 342 343 /* Given two link masks, AND them together and save the result in dst. */ 344 void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, 345 struct ethtool_link_ksettings *src) 346 { 347 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); 348 unsigned int idx = 0; 349 350 for (; idx < size; idx++) { 351 dst->link_modes.supported[idx] &= 352 src->link_modes.supported[idx]; 353 dst->link_modes.advertising[idx] &= 354 src->link_modes.advertising[idx]; 355 } 356 } 357 EXPORT_SYMBOL(ethtool_intersect_link_masks); 358 359 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, 360 u32 legacy_u32) 361 { 362 linkmode_zero(dst); 363 dst[0] = legacy_u32; 364 } 365 EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); 366 367 /* return false if src had higher bits set. lower bits always updated. */ 368 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, 369 const unsigned long *src) 370 { 371 *legacy_u32 = src[0]; 372 return find_next_bit(src, __ETHTOOL_LINK_MODE_MASK_NBITS, 32) == 373 __ETHTOOL_LINK_MODE_MASK_NBITS; 374 } 375 EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); 376 377 /* return false if ksettings link modes had higher bits 378 * set. legacy_settings always updated (best effort) 379 */ 380 static bool 381 convert_link_ksettings_to_legacy_settings( 382 struct ethtool_cmd *legacy_settings, 383 const struct ethtool_link_ksettings *link_ksettings) 384 { 385 bool retval = true; 386 387 memset(legacy_settings, 0, sizeof(*legacy_settings)); 388 /* this also clears the deprecated fields in legacy structure: 389 * __u8 transceiver; 390 * __u32 maxtxpkt; 391 * __u32 maxrxpkt; 392 */ 393 394 retval &= ethtool_convert_link_mode_to_legacy_u32( 395 &legacy_settings->supported, 396 link_ksettings->link_modes.supported); 397 retval &= ethtool_convert_link_mode_to_legacy_u32( 398 &legacy_settings->advertising, 399 link_ksettings->link_modes.advertising); 400 retval &= ethtool_convert_link_mode_to_legacy_u32( 401 &legacy_settings->lp_advertising, 402 link_ksettings->link_modes.lp_advertising); 403 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); 404 legacy_settings->duplex 405 = link_ksettings->base.duplex; 406 legacy_settings->port 407 = link_ksettings->base.port; 408 legacy_settings->phy_address 409 = link_ksettings->base.phy_address; 410 legacy_settings->autoneg 411 = link_ksettings->base.autoneg; 412 legacy_settings->mdio_support 413 = link_ksettings->base.mdio_support; 414 legacy_settings->eth_tp_mdix 415 = link_ksettings->base.eth_tp_mdix; 416 legacy_settings->eth_tp_mdix_ctrl 417 = link_ksettings->base.eth_tp_mdix_ctrl; 418 legacy_settings->transceiver 419 = link_ksettings->base.transceiver; 420 return retval; 421 } 422 423 /* number of 32-bit words to store the user's link mode bitmaps */ 424 #define __ETHTOOL_LINK_MODE_MASK_NU32 \ 425 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) 426 427 /* layout of the struct passed from/to userland */ 428 struct ethtool_link_usettings { 429 struct ethtool_link_settings base; 430 struct { 431 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; 432 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 433 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 434 } link_modes; 435 }; 436 437 /* Internal kernel helper to query a device ethtool_link_settings. */ 438 int __ethtool_get_link_ksettings(struct net_device *dev, 439 struct ethtool_link_ksettings *link_ksettings) 440 { 441 ASSERT_RTNL(); 442 443 if (!dev->ethtool_ops->get_link_ksettings) 444 return -EOPNOTSUPP; 445 446 if (!netif_device_present(dev)) 447 return -ENODEV; 448 449 memset(link_ksettings, 0, sizeof(*link_ksettings)); 450 return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings); 451 } 452 EXPORT_SYMBOL(__ethtool_get_link_ksettings); 453 454 /* convert ethtool_link_usettings in user space to a kernel internal 455 * ethtool_link_ksettings. return 0 on success, errno on error. 456 */ 457 static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, 458 const void __user *from) 459 { 460 struct ethtool_link_usettings link_usettings; 461 462 if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) 463 return -EFAULT; 464 465 memcpy(&to->base, &link_usettings.base, sizeof(to->base)); 466 bitmap_from_arr32(to->link_modes.supported, 467 link_usettings.link_modes.supported, 468 __ETHTOOL_LINK_MODE_MASK_NBITS); 469 bitmap_from_arr32(to->link_modes.advertising, 470 link_usettings.link_modes.advertising, 471 __ETHTOOL_LINK_MODE_MASK_NBITS); 472 bitmap_from_arr32(to->link_modes.lp_advertising, 473 link_usettings.link_modes.lp_advertising, 474 __ETHTOOL_LINK_MODE_MASK_NBITS); 475 476 return 0; 477 } 478 479 /* Check if the user is trying to change anything besides speed/duplex */ 480 bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd) 481 { 482 struct ethtool_link_settings base2 = {}; 483 484 base2.speed = cmd->base.speed; 485 base2.port = PORT_OTHER; 486 base2.duplex = cmd->base.duplex; 487 base2.cmd = cmd->base.cmd; 488 base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords; 489 490 return !memcmp(&base2, &cmd->base, sizeof(base2)) && 491 bitmap_empty(cmd->link_modes.supported, 492 __ETHTOOL_LINK_MODE_MASK_NBITS) && 493 bitmap_empty(cmd->link_modes.lp_advertising, 494 __ETHTOOL_LINK_MODE_MASK_NBITS); 495 } 496 497 /* convert a kernel internal ethtool_link_ksettings to 498 * ethtool_link_usettings in user space. return 0 on success, errno on 499 * error. 500 */ 501 static int 502 store_link_ksettings_for_user(void __user *to, 503 const struct ethtool_link_ksettings *from) 504 { 505 struct ethtool_link_usettings link_usettings; 506 507 memcpy(&link_usettings, from, sizeof(link_usettings)); 508 bitmap_to_arr32(link_usettings.link_modes.supported, 509 from->link_modes.supported, 510 __ETHTOOL_LINK_MODE_MASK_NBITS); 511 bitmap_to_arr32(link_usettings.link_modes.advertising, 512 from->link_modes.advertising, 513 __ETHTOOL_LINK_MODE_MASK_NBITS); 514 bitmap_to_arr32(link_usettings.link_modes.lp_advertising, 515 from->link_modes.lp_advertising, 516 __ETHTOOL_LINK_MODE_MASK_NBITS); 517 518 if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) 519 return -EFAULT; 520 521 return 0; 522 } 523 524 /* Query device for its ethtool_link_settings. */ 525 static int ethtool_get_link_ksettings(struct net_device *dev, 526 void __user *useraddr) 527 { 528 int err = 0; 529 struct ethtool_link_ksettings link_ksettings; 530 531 ASSERT_RTNL(); 532 if (!dev->ethtool_ops->get_link_ksettings) 533 return -EOPNOTSUPP; 534 535 /* handle bitmap nbits handshake */ 536 if (copy_from_user(&link_ksettings.base, useraddr, 537 sizeof(link_ksettings.base))) 538 return -EFAULT; 539 540 if (__ETHTOOL_LINK_MODE_MASK_NU32 541 != link_ksettings.base.link_mode_masks_nwords) { 542 /* wrong link mode nbits requested */ 543 memset(&link_ksettings, 0, sizeof(link_ksettings)); 544 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 545 /* send back number of words required as negative val */ 546 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, 547 "need too many bits for link modes!"); 548 link_ksettings.base.link_mode_masks_nwords 549 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); 550 551 /* copy the base fields back to user, not the link 552 * mode bitmaps 553 */ 554 if (copy_to_user(useraddr, &link_ksettings.base, 555 sizeof(link_ksettings.base))) 556 return -EFAULT; 557 558 return 0; 559 } 560 561 /* handshake successful: user/kernel agree on 562 * link_mode_masks_nwords 563 */ 564 565 memset(&link_ksettings, 0, sizeof(link_ksettings)); 566 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 567 if (err < 0) 568 return err; 569 570 /* make sure we tell the right values to user */ 571 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 572 link_ksettings.base.link_mode_masks_nwords 573 = __ETHTOOL_LINK_MODE_MASK_NU32; 574 link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED; 575 link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED; 576 link_ksettings.base.rate_matching = RATE_MATCH_NONE; 577 578 return store_link_ksettings_for_user(useraddr, &link_ksettings); 579 } 580 581 /* Update device ethtool_link_settings. */ 582 static int ethtool_set_link_ksettings(struct net_device *dev, 583 void __user *useraddr) 584 { 585 struct ethtool_link_ksettings link_ksettings = {}; 586 int err; 587 588 ASSERT_RTNL(); 589 590 if (!dev->ethtool_ops->set_link_ksettings) 591 return -EOPNOTSUPP; 592 593 /* make sure nbits field has expected value */ 594 if (copy_from_user(&link_ksettings.base, useraddr, 595 sizeof(link_ksettings.base))) 596 return -EFAULT; 597 598 if (__ETHTOOL_LINK_MODE_MASK_NU32 599 != link_ksettings.base.link_mode_masks_nwords) 600 return -EINVAL; 601 602 /* copy the whole structure, now that we know it has expected 603 * format 604 */ 605 err = load_link_ksettings_from_user(&link_ksettings, useraddr); 606 if (err) 607 return err; 608 609 /* re-check nwords field, just in case */ 610 if (__ETHTOOL_LINK_MODE_MASK_NU32 611 != link_ksettings.base.link_mode_masks_nwords) 612 return -EINVAL; 613 614 if (link_ksettings.base.master_slave_cfg || 615 link_ksettings.base.master_slave_state) 616 return -EINVAL; 617 618 err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 619 if (err >= 0) { 620 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); 621 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); 622 } 623 return err; 624 } 625 626 int ethtool_virtdev_set_link_ksettings(struct net_device *dev, 627 const struct ethtool_link_ksettings *cmd, 628 u32 *dev_speed, u8 *dev_duplex) 629 { 630 u32 speed; 631 u8 duplex; 632 633 speed = cmd->base.speed; 634 duplex = cmd->base.duplex; 635 /* don't allow custom speed and duplex */ 636 if (!ethtool_validate_speed(speed) || 637 !ethtool_validate_duplex(duplex) || 638 !ethtool_virtdev_validate_cmd(cmd)) 639 return -EINVAL; 640 *dev_speed = speed; 641 *dev_duplex = duplex; 642 643 return 0; 644 } 645 EXPORT_SYMBOL(ethtool_virtdev_set_link_ksettings); 646 647 /* Query device for its ethtool_cmd settings. 648 * 649 * Backward compatibility note: for compatibility with legacy ethtool, this is 650 * now implemented via get_link_ksettings. When driver reports higher link mode 651 * bits, a kernel warning is logged once (with name of 1st driver/device) to 652 * recommend user to upgrade ethtool, but the command is successful (only the 653 * lower link mode bits reported back to user). Deprecated fields from 654 * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero. 655 */ 656 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) 657 { 658 struct ethtool_link_ksettings link_ksettings; 659 struct ethtool_cmd cmd; 660 int err; 661 662 ASSERT_RTNL(); 663 if (!dev->ethtool_ops->get_link_ksettings) 664 return -EOPNOTSUPP; 665 666 if (dev->ethtool->module_fw_flash_in_progress) 667 return -EBUSY; 668 669 memset(&link_ksettings, 0, sizeof(link_ksettings)); 670 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 671 if (err < 0) 672 return err; 673 convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings); 674 675 /* send a sensible cmd tag back to user */ 676 cmd.cmd = ETHTOOL_GSET; 677 678 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 679 return -EFAULT; 680 681 return 0; 682 } 683 684 /* Update device link settings with given ethtool_cmd. 685 * 686 * Backward compatibility note: for compatibility with legacy ethtool, this is 687 * now always implemented via set_link_settings. When user's request updates 688 * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel 689 * warning is logged once (with name of 1st driver/device) to recommend user to 690 * upgrade ethtool, and the request is rejected. 691 */ 692 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) 693 { 694 struct ethtool_link_ksettings link_ksettings; 695 struct ethtool_cmd cmd; 696 int ret; 697 698 ASSERT_RTNL(); 699 700 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 701 return -EFAULT; 702 if (!dev->ethtool_ops->set_link_ksettings) 703 return -EOPNOTSUPP; 704 705 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd)) 706 return -EINVAL; 707 link_ksettings.base.link_mode_masks_nwords = 708 __ETHTOOL_LINK_MODE_MASK_NU32; 709 ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 710 if (ret >= 0) { 711 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); 712 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); 713 } 714 return ret; 715 } 716 717 static int 718 ethtool_get_drvinfo(struct net_device *dev, struct ethtool_devlink_compat *rsp) 719 { 720 const struct ethtool_ops *ops = dev->ethtool_ops; 721 struct device *parent = dev->dev.parent; 722 723 rsp->info.cmd = ETHTOOL_GDRVINFO; 724 strscpy(rsp->info.version, init_uts_ns.name.release, 725 sizeof(rsp->info.version)); 726 if (ops->get_drvinfo) { 727 ops->get_drvinfo(dev, &rsp->info); 728 if (!rsp->info.bus_info[0] && parent) 729 strscpy(rsp->info.bus_info, dev_name(parent), 730 sizeof(rsp->info.bus_info)); 731 if (!rsp->info.driver[0] && parent && parent->driver) 732 strscpy(rsp->info.driver, parent->driver->name, 733 sizeof(rsp->info.driver)); 734 } else if (parent && parent->driver) { 735 strscpy(rsp->info.bus_info, dev_name(parent), 736 sizeof(rsp->info.bus_info)); 737 strscpy(rsp->info.driver, parent->driver->name, 738 sizeof(rsp->info.driver)); 739 } else if (dev->rtnl_link_ops) { 740 strscpy(rsp->info.driver, dev->rtnl_link_ops->kind, 741 sizeof(rsp->info.driver)); 742 } else { 743 return -EOPNOTSUPP; 744 } 745 746 /* 747 * this method of obtaining string set info is deprecated; 748 * Use ETHTOOL_GSSET_INFO instead. 749 */ 750 if (ops->get_sset_count) { 751 int rc; 752 753 rc = ops->get_sset_count(dev, ETH_SS_TEST); 754 if (rc >= 0) 755 rsp->info.testinfo_len = rc; 756 rc = ops->get_sset_count(dev, ETH_SS_STATS); 757 if (rc >= 0) 758 rsp->info.n_stats = rc; 759 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); 760 if (rc >= 0) 761 rsp->info.n_priv_flags = rc; 762 } 763 if (ops->get_regs_len) { 764 int ret = ops->get_regs_len(dev); 765 766 if (ret > 0) 767 rsp->info.regdump_len = ret; 768 } 769 770 if (ops->get_eeprom_len) 771 rsp->info.eedump_len = ops->get_eeprom_len(dev); 772 773 if (!rsp->info.fw_version[0]) 774 rsp->devlink = netdev_to_devlink_get(dev); 775 776 return 0; 777 } 778 779 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, 780 void __user *useraddr) 781 { 782 struct ethtool_sset_info info; 783 u64 sset_mask; 784 int i, idx = 0, n_bits = 0, ret, rc; 785 u32 *info_buf = NULL; 786 787 if (copy_from_user(&info, useraddr, sizeof(info))) 788 return -EFAULT; 789 790 /* store copy of mask, because we zero struct later on */ 791 sset_mask = info.sset_mask; 792 if (!sset_mask) 793 return 0; 794 795 /* calculate size of return buffer */ 796 n_bits = hweight64(sset_mask); 797 798 memset(&info, 0, sizeof(info)); 799 info.cmd = ETHTOOL_GSSET_INFO; 800 801 info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER); 802 if (!info_buf) 803 return -ENOMEM; 804 805 /* 806 * fill return buffer based on input bitmask and successful 807 * get_sset_count return 808 */ 809 for (i = 0; i < 64; i++) { 810 if (!(sset_mask & (1ULL << i))) 811 continue; 812 813 rc = __ethtool_get_sset_count(dev, i); 814 if (rc >= 0) { 815 info.sset_mask |= (1ULL << i); 816 info_buf[idx++] = rc; 817 } 818 } 819 820 ret = -EFAULT; 821 if (copy_to_user(useraddr, &info, sizeof(info))) 822 goto out; 823 824 useraddr += offsetof(struct ethtool_sset_info, data); 825 if (copy_to_user(useraddr, info_buf, array_size(idx, sizeof(u32)))) 826 goto out; 827 828 ret = 0; 829 830 out: 831 kfree(info_buf); 832 return ret; 833 } 834 835 static noinline_for_stack int 836 ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc, 837 const struct compat_ethtool_rxnfc __user *useraddr, 838 size_t size) 839 { 840 struct compat_ethtool_rxnfc crxnfc = {}; 841 842 /* We expect there to be holes between fs.m_ext and 843 * fs.ring_cookie and at the end of fs, but nowhere else. 844 * On non-x86, no conversion should be needed. 845 */ 846 BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) && 847 sizeof(struct compat_ethtool_rxnfc) != 848 sizeof(struct ethtool_rxnfc)); 849 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) + 850 sizeof(useraddr->fs.m_ext) != 851 offsetof(struct ethtool_rxnfc, fs.m_ext) + 852 sizeof(rxnfc->fs.m_ext)); 853 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) - 854 offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) != 855 offsetof(struct ethtool_rxnfc, fs.location) - 856 offsetof(struct ethtool_rxnfc, fs.ring_cookie)); 857 858 if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc)))) 859 return -EFAULT; 860 861 *rxnfc = (struct ethtool_rxnfc) { 862 .cmd = crxnfc.cmd, 863 .flow_type = crxnfc.flow_type, 864 .data = crxnfc.data, 865 .fs = { 866 .flow_type = crxnfc.fs.flow_type, 867 .h_u = crxnfc.fs.h_u, 868 .h_ext = crxnfc.fs.h_ext, 869 .m_u = crxnfc.fs.m_u, 870 .m_ext = crxnfc.fs.m_ext, 871 .ring_cookie = crxnfc.fs.ring_cookie, 872 .location = crxnfc.fs.location, 873 }, 874 .rule_cnt = crxnfc.rule_cnt, 875 }; 876 877 return 0; 878 } 879 880 static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc, 881 const void __user *useraddr, 882 size_t size) 883 { 884 if (compat_need_64bit_alignment_fixup()) 885 return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size); 886 887 if (copy_from_user(rxnfc, useraddr, size)) 888 return -EFAULT; 889 890 return 0; 891 } 892 893 static int ethtool_rxnfc_copy_to_compat(void __user *useraddr, 894 const struct ethtool_rxnfc *rxnfc, 895 size_t size, const u32 *rule_buf) 896 { 897 struct compat_ethtool_rxnfc crxnfc; 898 899 memset(&crxnfc, 0, sizeof(crxnfc)); 900 crxnfc = (struct compat_ethtool_rxnfc) { 901 .cmd = rxnfc->cmd, 902 .flow_type = rxnfc->flow_type, 903 .data = rxnfc->data, 904 .fs = { 905 .flow_type = rxnfc->fs.flow_type, 906 .h_u = rxnfc->fs.h_u, 907 .h_ext = rxnfc->fs.h_ext, 908 .m_u = rxnfc->fs.m_u, 909 .m_ext = rxnfc->fs.m_ext, 910 .ring_cookie = rxnfc->fs.ring_cookie, 911 .location = rxnfc->fs.location, 912 }, 913 .rule_cnt = rxnfc->rule_cnt, 914 }; 915 916 if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc)))) 917 return -EFAULT; 918 919 return 0; 920 } 921 922 static int ethtool_rxnfc_copy_struct(u32 cmd, struct ethtool_rxnfc *info, 923 size_t *info_size, void __user *useraddr) 924 { 925 /* struct ethtool_rxnfc was originally defined for 926 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 927 * members. User-space might still be using that 928 * definition. 929 */ 930 if (cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) 931 *info_size = (offsetof(struct ethtool_rxnfc, data) + 932 sizeof(info->data)); 933 934 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) 935 return -EFAULT; 936 937 if ((cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) && info->flow_type & FLOW_RSS) { 938 *info_size = sizeof(*info); 939 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) 940 return -EFAULT; 941 /* Since malicious users may modify the original data, 942 * we need to check whether FLOW_RSS is still requested. 943 */ 944 if (!(info->flow_type & FLOW_RSS)) 945 return -EINVAL; 946 } 947 948 if (info->cmd != cmd) 949 return -EINVAL; 950 951 return 0; 952 } 953 954 static int ethtool_rxnfc_copy_to_user(void __user *useraddr, 955 const struct ethtool_rxnfc *rxnfc, 956 size_t size, const u32 *rule_buf) 957 { 958 int ret; 959 960 if (compat_need_64bit_alignment_fixup()) { 961 ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size, 962 rule_buf); 963 useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs); 964 } else { 965 ret = copy_to_user(useraddr, rxnfc, size); 966 useraddr += offsetof(struct ethtool_rxnfc, rule_locs); 967 } 968 969 if (ret) 970 return -EFAULT; 971 972 if (rule_buf) { 973 if (copy_to_user(useraddr, rule_buf, 974 rxnfc->rule_cnt * sizeof(u32))) 975 return -EFAULT; 976 } 977 978 return 0; 979 } 980 981 static bool flow_type_hashable(u32 flow_type) 982 { 983 switch (flow_type) { 984 case TCP_V4_FLOW: 985 case UDP_V4_FLOW: 986 case SCTP_V4_FLOW: 987 case AH_ESP_V4_FLOW: 988 case TCP_V6_FLOW: 989 case UDP_V6_FLOW: 990 case SCTP_V6_FLOW: 991 case AH_ESP_V6_FLOW: 992 case AH_V4_FLOW: 993 case ESP_V4_FLOW: 994 case AH_V6_FLOW: 995 case ESP_V6_FLOW: 996 case IPV4_FLOW: 997 case IPV6_FLOW: 998 case GTPU_V4_FLOW: 999 case GTPU_V6_FLOW: 1000 case GTPC_V4_FLOW: 1001 case GTPC_V6_FLOW: 1002 case GTPC_TEID_V4_FLOW: 1003 case GTPC_TEID_V6_FLOW: 1004 case GTPU_EH_V4_FLOW: 1005 case GTPU_EH_V6_FLOW: 1006 case GTPU_UL_V4_FLOW: 1007 case GTPU_UL_V6_FLOW: 1008 case GTPU_DL_V4_FLOW: 1009 case GTPU_DL_V6_FLOW: 1010 return true; 1011 } 1012 1013 return false; 1014 } 1015 1016 /* When adding a new type, update the assert and, if it's hashable, add it to 1017 * the flow_type_hashable switch case. 1018 */ 1019 static_assert(GTPU_DL_V6_FLOW + 1 == __FLOW_TYPE_COUNT); 1020 1021 static int ethtool_check_xfrm_rxfh(u32 input_xfrm, u64 rxfh) 1022 { 1023 /* Sanity check: if symmetric-xor/symmetric-or-xor is set, then: 1024 * 1 - no other fields besides IP src/dst and/or L4 src/dst are set 1025 * 2 - If src is set, dst must also be set 1026 */ 1027 if ((input_xfrm != RXH_XFRM_NO_CHANGE && 1028 input_xfrm & (RXH_XFRM_SYM_XOR | RXH_XFRM_SYM_OR_XOR)) && 1029 ((rxfh & ~(RXH_IP_SRC | RXH_IP_DST | RXH_L4_B_0_1 | RXH_L4_B_2_3)) || 1030 (!!(rxfh & RXH_IP_SRC) ^ !!(rxfh & RXH_IP_DST)) || 1031 (!!(rxfh & RXH_L4_B_0_1) ^ !!(rxfh & RXH_L4_B_2_3)))) 1032 return -EINVAL; 1033 1034 return 0; 1035 } 1036 1037 static int ethtool_check_flow_types(struct net_device *dev, u32 input_xfrm) 1038 { 1039 const struct ethtool_ops *ops = dev->ethtool_ops; 1040 struct ethtool_rxnfc info = { 1041 .cmd = ETHTOOL_GRXFH, 1042 }; 1043 int err; 1044 u32 i; 1045 1046 for (i = 0; i < __FLOW_TYPE_COUNT; i++) { 1047 if (!flow_type_hashable(i)) 1048 continue; 1049 1050 info.flow_type = i; 1051 err = ops->get_rxnfc(dev, &info, NULL); 1052 if (err) 1053 continue; 1054 1055 err = ethtool_check_xfrm_rxfh(input_xfrm, info.data); 1056 if (err) 1057 return err; 1058 } 1059 1060 return 0; 1061 } 1062 1063 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, 1064 u32 cmd, void __user *useraddr) 1065 { 1066 const struct ethtool_ops *ops = dev->ethtool_ops; 1067 struct ethtool_rxnfc info; 1068 size_t info_size = sizeof(info); 1069 int rc; 1070 1071 if (!ops->set_rxnfc) 1072 return -EOPNOTSUPP; 1073 1074 rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1075 if (rc) 1076 return rc; 1077 1078 if (cmd == ETHTOOL_SRXCLSRLINS && info.fs.flow_type & FLOW_RSS) { 1079 /* Nonzero ring with RSS only makes sense 1080 * if NIC adds them together 1081 */ 1082 if (!ops->cap_rss_rxnfc_adds && 1083 ethtool_get_flow_spec_ring(info.fs.ring_cookie)) 1084 return -EINVAL; 1085 1086 if (info.rss_context && 1087 !xa_load(&dev->ethtool->rss_ctx, info.rss_context)) 1088 return -EINVAL; 1089 } 1090 1091 if (cmd == ETHTOOL_SRXFH && ops->get_rxfh) { 1092 struct ethtool_rxfh_param rxfh = {}; 1093 1094 rc = ops->get_rxfh(dev, &rxfh); 1095 if (rc) 1096 return rc; 1097 1098 rc = ethtool_check_xfrm_rxfh(rxfh.input_xfrm, info.data); 1099 if (rc) 1100 return rc; 1101 } 1102 1103 rc = ops->set_rxnfc(dev, &info); 1104 if (rc) 1105 return rc; 1106 1107 if (cmd == ETHTOOL_SRXCLSRLINS && 1108 ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL)) 1109 return -EFAULT; 1110 1111 return 0; 1112 } 1113 1114 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, 1115 u32 cmd, void __user *useraddr) 1116 { 1117 struct ethtool_rxnfc info; 1118 size_t info_size = sizeof(info); 1119 const struct ethtool_ops *ops = dev->ethtool_ops; 1120 int ret; 1121 void *rule_buf = NULL; 1122 1123 if (!ops->get_rxnfc) 1124 return -EOPNOTSUPP; 1125 1126 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1127 if (ret) 1128 return ret; 1129 1130 if (info.cmd == ETHTOOL_GRXCLSRLALL) { 1131 if (info.rule_cnt > 0) { 1132 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) 1133 rule_buf = kcalloc(info.rule_cnt, sizeof(u32), 1134 GFP_USER); 1135 if (!rule_buf) 1136 return -ENOMEM; 1137 } 1138 } 1139 1140 ret = ops->get_rxnfc(dev, &info, rule_buf); 1141 if (ret < 0) 1142 goto err_out; 1143 1144 ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf); 1145 err_out: 1146 kfree(rule_buf); 1147 1148 return ret; 1149 } 1150 1151 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, 1152 struct ethtool_rxnfc *rx_rings, 1153 u32 size) 1154 { 1155 int i; 1156 1157 if (copy_from_user(indir, useraddr, array_size(size, sizeof(indir[0])))) 1158 return -EFAULT; 1159 1160 /* Validate ring indices */ 1161 for (i = 0; i < size; i++) 1162 if (indir[i] >= rx_rings->data) 1163 return -EINVAL; 1164 1165 return 0; 1166 } 1167 1168 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; 1169 1170 void netdev_rss_key_fill(void *buffer, size_t len) 1171 { 1172 BUG_ON(len > sizeof(netdev_rss_key)); 1173 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); 1174 memcpy(buffer, netdev_rss_key, len); 1175 } 1176 EXPORT_SYMBOL(netdev_rss_key_fill); 1177 1178 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, 1179 void __user *useraddr) 1180 { 1181 struct ethtool_rxfh_param rxfh = {}; 1182 u32 user_size; 1183 int ret; 1184 1185 if (!dev->ethtool_ops->get_rxfh_indir_size || 1186 !dev->ethtool_ops->get_rxfh) 1187 return -EOPNOTSUPP; 1188 rxfh.indir_size = dev->ethtool_ops->get_rxfh_indir_size(dev); 1189 if (rxfh.indir_size == 0) 1190 return -EOPNOTSUPP; 1191 1192 if (copy_from_user(&user_size, 1193 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1194 sizeof(user_size))) 1195 return -EFAULT; 1196 1197 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), 1198 &rxfh.indir_size, sizeof(rxfh.indir_size))) 1199 return -EFAULT; 1200 1201 /* If the user buffer size is 0, this is just a query for the 1202 * device table size. Otherwise, if it's smaller than the 1203 * device table size it's an error. 1204 */ 1205 if (user_size < rxfh.indir_size) 1206 return user_size == 0 ? 0 : -EINVAL; 1207 1208 rxfh.indir = kcalloc(rxfh.indir_size, sizeof(rxfh.indir[0]), GFP_USER); 1209 if (!rxfh.indir) 1210 return -ENOMEM; 1211 1212 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh); 1213 if (ret) 1214 goto out; 1215 if (copy_to_user(useraddr + 1216 offsetof(struct ethtool_rxfh_indir, ring_index[0]), 1217 rxfh.indir, rxfh.indir_size * sizeof(*rxfh.indir))) 1218 ret = -EFAULT; 1219 1220 out: 1221 kfree(rxfh.indir); 1222 return ret; 1223 } 1224 1225 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, 1226 void __user *useraddr) 1227 { 1228 const struct ethtool_ops *ops = dev->ethtool_ops; 1229 struct ethtool_rxfh_param rxfh_dev = {}; 1230 struct netlink_ext_ack *extack = NULL; 1231 struct ethtool_rxnfc rx_rings; 1232 u32 user_size, i; 1233 int ret; 1234 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); 1235 1236 if (!ops->get_rxfh_indir_size || !ops->set_rxfh || 1237 !ops->get_rxnfc) 1238 return -EOPNOTSUPP; 1239 1240 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1241 if (rxfh_dev.indir_size == 0) 1242 return -EOPNOTSUPP; 1243 1244 if (copy_from_user(&user_size, 1245 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1246 sizeof(user_size))) 1247 return -EFAULT; 1248 1249 if (user_size != 0 && user_size != rxfh_dev.indir_size) 1250 return -EINVAL; 1251 1252 rxfh_dev.indir = kcalloc(rxfh_dev.indir_size, 1253 sizeof(rxfh_dev.indir[0]), GFP_USER); 1254 if (!rxfh_dev.indir) 1255 return -ENOMEM; 1256 1257 rx_rings.cmd = ETHTOOL_GRXRINGS; 1258 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1259 if (ret) 1260 goto out; 1261 1262 if (user_size == 0) { 1263 u32 *indir = rxfh_dev.indir; 1264 1265 for (i = 0; i < rxfh_dev.indir_size; i++) 1266 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1267 } else { 1268 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1269 useraddr + ringidx_offset, 1270 &rx_rings, 1271 rxfh_dev.indir_size); 1272 if (ret) 1273 goto out; 1274 } 1275 1276 rxfh_dev.hfunc = ETH_RSS_HASH_NO_CHANGE; 1277 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1278 if (ret) 1279 goto out; 1280 1281 /* indicate whether rxfh was set to default */ 1282 if (user_size == 0) 1283 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1284 else 1285 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1286 1287 out: 1288 kfree(rxfh_dev.indir); 1289 return ret; 1290 } 1291 1292 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, 1293 void __user *useraddr) 1294 { 1295 const struct ethtool_ops *ops = dev->ethtool_ops; 1296 struct ethtool_rxfh_param rxfh_dev = {}; 1297 u32 user_indir_size, user_key_size; 1298 struct ethtool_rxfh_context *ctx; 1299 struct ethtool_rxfh rxfh; 1300 u32 indir_bytes; 1301 u8 *rss_config; 1302 u32 total_size; 1303 int ret; 1304 1305 if (!ops->get_rxfh) 1306 return -EOPNOTSUPP; 1307 1308 if (ops->get_rxfh_indir_size) 1309 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1310 if (ops->get_rxfh_key_size) 1311 rxfh_dev.key_size = ops->get_rxfh_key_size(dev); 1312 1313 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1314 return -EFAULT; 1315 user_indir_size = rxfh.indir_size; 1316 user_key_size = rxfh.key_size; 1317 1318 /* Check that reserved fields are 0 for now */ 1319 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1320 return -EINVAL; 1321 /* Most drivers don't handle rss_context, check it's 0 as well */ 1322 if (rxfh.rss_context && !(ops->cap_rss_ctx_supported || 1323 ops->create_rxfh_context)) 1324 return -EOPNOTSUPP; 1325 1326 rxfh.indir_size = rxfh_dev.indir_size; 1327 rxfh.key_size = rxfh_dev.key_size; 1328 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) 1329 return -EFAULT; 1330 1331 if ((user_indir_size && user_indir_size != rxfh_dev.indir_size) || 1332 (user_key_size && user_key_size != rxfh_dev.key_size)) 1333 return -EINVAL; 1334 1335 indir_bytes = user_indir_size * sizeof(rxfh_dev.indir[0]); 1336 total_size = indir_bytes + user_key_size; 1337 rss_config = kzalloc(total_size, GFP_USER); 1338 if (!rss_config) 1339 return -ENOMEM; 1340 1341 if (user_indir_size) 1342 rxfh_dev.indir = (u32 *)rss_config; 1343 1344 if (user_key_size) 1345 rxfh_dev.key = rss_config + indir_bytes; 1346 1347 if (rxfh.rss_context) { 1348 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1349 if (!ctx) { 1350 ret = -ENOENT; 1351 goto out; 1352 } 1353 if (rxfh_dev.indir) 1354 memcpy(rxfh_dev.indir, ethtool_rxfh_context_indir(ctx), 1355 indir_bytes); 1356 if (!ops->rxfh_per_ctx_key) { 1357 rxfh_dev.key_size = 0; 1358 } else { 1359 if (rxfh_dev.key) 1360 memcpy(rxfh_dev.key, 1361 ethtool_rxfh_context_key(ctx), 1362 user_key_size); 1363 rxfh_dev.hfunc = ctx->hfunc; 1364 } 1365 rxfh_dev.input_xfrm = ctx->input_xfrm; 1366 ret = 0; 1367 } else { 1368 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh_dev); 1369 if (ret) 1370 goto out; 1371 } 1372 1373 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), 1374 &rxfh_dev.hfunc, sizeof(rxfh.hfunc))) { 1375 ret = -EFAULT; 1376 } else if (copy_to_user(useraddr + 1377 offsetof(struct ethtool_rxfh, input_xfrm), 1378 &rxfh_dev.input_xfrm, 1379 sizeof(rxfh.input_xfrm))) { 1380 ret = -EFAULT; 1381 } else if (copy_to_user(useraddr + 1382 offsetof(struct ethtool_rxfh, key_size), 1383 &rxfh_dev.key_size, 1384 sizeof(rxfh.key_size))) { 1385 ret = -EFAULT; 1386 } else if (copy_to_user(useraddr + 1387 offsetof(struct ethtool_rxfh, rss_config[0]), 1388 rss_config, total_size)) { 1389 ret = -EFAULT; 1390 } 1391 out: 1392 kfree(rss_config); 1393 1394 return ret; 1395 } 1396 1397 static struct ethtool_rxfh_context * 1398 ethtool_rxfh_ctx_alloc(const struct ethtool_ops *ops, 1399 u32 indir_size, u32 key_size) 1400 { 1401 size_t indir_bytes, flex_len, key_off, size; 1402 struct ethtool_rxfh_context *ctx; 1403 u32 priv_bytes, indir_max; 1404 u16 key_max; 1405 1406 key_max = max(key_size, ops->rxfh_key_space); 1407 indir_max = max(indir_size, ops->rxfh_indir_space); 1408 1409 priv_bytes = ALIGN(ops->rxfh_priv_size, sizeof(u32)); 1410 indir_bytes = array_size(indir_max, sizeof(u32)); 1411 1412 key_off = size_add(priv_bytes, indir_bytes); 1413 flex_len = size_add(key_off, key_max); 1414 size = struct_size_t(struct ethtool_rxfh_context, data, flex_len); 1415 1416 ctx = kzalloc(size, GFP_KERNEL_ACCOUNT); 1417 if (!ctx) 1418 return NULL; 1419 1420 ctx->indir_size = indir_size; 1421 ctx->key_size = key_size; 1422 ctx->key_off = key_off; 1423 ctx->priv_size = ops->rxfh_priv_size; 1424 1425 ctx->hfunc = ETH_RSS_HASH_NO_CHANGE; 1426 ctx->input_xfrm = RXH_XFRM_NO_CHANGE; 1427 1428 return ctx; 1429 } 1430 1431 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, 1432 void __user *useraddr) 1433 { 1434 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); 1435 const struct ethtool_ops *ops = dev->ethtool_ops; 1436 u32 dev_indir_size = 0, dev_key_size = 0, i; 1437 u32 user_indir_len = 0, indir_bytes = 0; 1438 struct ethtool_rxfh_param rxfh_dev = {}; 1439 struct ethtool_rxfh_context *ctx = NULL; 1440 struct netlink_ext_ack *extack = NULL; 1441 struct ethtool_rxnfc rx_rings; 1442 struct ethtool_rxfh rxfh; 1443 bool locked = false; /* dev->ethtool->rss_lock taken */ 1444 bool create = false; 1445 u8 *rss_config; 1446 int ret; 1447 1448 if (!ops->get_rxnfc || !ops->set_rxfh) 1449 return -EOPNOTSUPP; 1450 1451 if (ops->get_rxfh_indir_size) 1452 dev_indir_size = ops->get_rxfh_indir_size(dev); 1453 if (ops->get_rxfh_key_size) 1454 dev_key_size = ops->get_rxfh_key_size(dev); 1455 1456 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1457 return -EFAULT; 1458 1459 /* Check that reserved fields are 0 for now */ 1460 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1461 return -EINVAL; 1462 /* Most drivers don't handle rss_context, check it's 0 as well */ 1463 if (rxfh.rss_context && !(ops->cap_rss_ctx_supported || 1464 ops->create_rxfh_context)) 1465 return -EOPNOTSUPP; 1466 /* Check input data transformation capabilities */ 1467 if (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_SYM_XOR && 1468 rxfh.input_xfrm != RXH_XFRM_SYM_OR_XOR && 1469 rxfh.input_xfrm != RXH_XFRM_NO_CHANGE) 1470 return -EINVAL; 1471 if (rxfh.input_xfrm != RXH_XFRM_NO_CHANGE && 1472 rxfh.input_xfrm & ~ops->supported_input_xfrm) 1473 return -EOPNOTSUPP; 1474 create = rxfh.rss_context == ETH_RXFH_CONTEXT_ALLOC; 1475 1476 if ((rxfh.indir_size && 1477 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && 1478 rxfh.indir_size != dev_indir_size) || 1479 (rxfh.key_size && rxfh.key_size != dev_key_size)) 1480 return -EINVAL; 1481 1482 /* Must request at least one change: indir size, hash key, function 1483 * or input transformation. 1484 * There's no need for any of it in case of context creation. 1485 */ 1486 if (!create && 1487 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && 1488 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE && 1489 rxfh.input_xfrm == RXH_XFRM_NO_CHANGE)) 1490 return -EINVAL; 1491 1492 ret = ethtool_check_flow_types(dev, rxfh.input_xfrm); 1493 if (ret) 1494 return ret; 1495 1496 indir_bytes = dev_indir_size * sizeof(rxfh_dev.indir[0]); 1497 1498 /* Check settings which may be global rather than per RSS-context */ 1499 if (rxfh.rss_context && !ops->rxfh_per_ctx_key) 1500 if (rxfh.key_size || 1501 (rxfh.hfunc && rxfh.hfunc != ETH_RSS_HASH_NO_CHANGE) || 1502 (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_NO_CHANGE)) 1503 return -EOPNOTSUPP; 1504 1505 rss_config = kzalloc(indir_bytes + dev_key_size, GFP_USER); 1506 if (!rss_config) 1507 return -ENOMEM; 1508 1509 rx_rings.cmd = ETHTOOL_GRXRINGS; 1510 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1511 if (ret) 1512 goto out; 1513 1514 /* rxfh.indir_size == 0 means reset the indir table to default (master 1515 * context) or delete the context (other RSS contexts). 1516 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. 1517 */ 1518 if (rxfh.indir_size && 1519 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { 1520 user_indir_len = indir_bytes; 1521 rxfh_dev.indir = (u32 *)rss_config; 1522 rxfh_dev.indir_size = dev_indir_size; 1523 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1524 useraddr + rss_cfg_offset, 1525 &rx_rings, 1526 rxfh.indir_size); 1527 if (ret) 1528 goto out; 1529 } else if (rxfh.indir_size == 0) { 1530 if (rxfh.rss_context == 0) { 1531 u32 *indir; 1532 1533 rxfh_dev.indir = (u32 *)rss_config; 1534 rxfh_dev.indir_size = dev_indir_size; 1535 indir = rxfh_dev.indir; 1536 for (i = 0; i < dev_indir_size; i++) 1537 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1538 } else { 1539 rxfh_dev.rss_delete = true; 1540 } 1541 } 1542 1543 if (rxfh.key_size) { 1544 rxfh_dev.key_size = dev_key_size; 1545 rxfh_dev.key = rss_config + indir_bytes; 1546 if (copy_from_user(rxfh_dev.key, 1547 useraddr + rss_cfg_offset + user_indir_len, 1548 rxfh.key_size)) { 1549 ret = -EFAULT; 1550 goto out; 1551 } 1552 } 1553 1554 if (rxfh.rss_context) { 1555 mutex_lock(&dev->ethtool->rss_lock); 1556 locked = true; 1557 } 1558 1559 if (rxfh.rss_context && rxfh_dev.rss_delete) { 1560 ret = ethtool_check_rss_ctx_busy(dev, rxfh.rss_context); 1561 if (ret) 1562 goto out; 1563 } 1564 1565 if (create) { 1566 if (rxfh_dev.rss_delete) { 1567 ret = -EINVAL; 1568 goto out; 1569 } 1570 ctx = ethtool_rxfh_ctx_alloc(ops, dev_indir_size, dev_key_size); 1571 if (!ctx) { 1572 ret = -ENOMEM; 1573 goto out; 1574 } 1575 1576 if (ops->create_rxfh_context) { 1577 u32 limit = ops->rxfh_max_num_contexts ?: U32_MAX; 1578 u32 ctx_id; 1579 1580 /* driver uses new API, core allocates ID */ 1581 ret = xa_alloc(&dev->ethtool->rss_ctx, &ctx_id, ctx, 1582 XA_LIMIT(1, limit - 1), 1583 GFP_KERNEL_ACCOUNT); 1584 if (ret < 0) { 1585 kfree(ctx); 1586 goto out; 1587 } 1588 WARN_ON(!ctx_id); /* can't happen */ 1589 rxfh.rss_context = ctx_id; 1590 } 1591 } else if (rxfh.rss_context) { 1592 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1593 if (!ctx) { 1594 ret = -ENOENT; 1595 goto out; 1596 } 1597 } 1598 rxfh_dev.hfunc = rxfh.hfunc; 1599 rxfh_dev.rss_context = rxfh.rss_context; 1600 rxfh_dev.input_xfrm = rxfh.input_xfrm; 1601 1602 if (rxfh.rss_context && ops->create_rxfh_context) { 1603 if (create) { 1604 ret = ops->create_rxfh_context(dev, ctx, &rxfh_dev, 1605 extack); 1606 /* Make sure driver populates defaults */ 1607 WARN_ON_ONCE(!ret && !rxfh_dev.key && 1608 ops->rxfh_per_ctx_key && 1609 !memchr_inv(ethtool_rxfh_context_key(ctx), 1610 0, ctx->key_size)); 1611 } else if (rxfh_dev.rss_delete) { 1612 ret = ops->remove_rxfh_context(dev, ctx, 1613 rxfh.rss_context, 1614 extack); 1615 } else { 1616 ret = ops->modify_rxfh_context(dev, ctx, &rxfh_dev, 1617 extack); 1618 } 1619 } else { 1620 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1621 } 1622 if (ret) { 1623 if (create) { 1624 /* failed to create, free our new tracking entry */ 1625 if (ops->create_rxfh_context) 1626 xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context); 1627 kfree(ctx); 1628 } 1629 goto out; 1630 } 1631 1632 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), 1633 &rxfh_dev.rss_context, sizeof(rxfh_dev.rss_context))) 1634 ret = -EFAULT; 1635 1636 if (!rxfh_dev.rss_context) { 1637 /* indicate whether rxfh was set to default */ 1638 if (rxfh.indir_size == 0) 1639 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1640 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1641 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1642 } 1643 /* Update rss_ctx tracking */ 1644 if (create && !ops->create_rxfh_context) { 1645 /* driver uses old API, it chose context ID */ 1646 if (WARN_ON(xa_load(&dev->ethtool->rss_ctx, rxfh_dev.rss_context))) { 1647 /* context ID reused, our tracking is screwed */ 1648 kfree(ctx); 1649 goto out; 1650 } 1651 /* Allocate the exact ID the driver gave us */ 1652 if (xa_is_err(xa_store(&dev->ethtool->rss_ctx, rxfh_dev.rss_context, 1653 ctx, GFP_KERNEL))) { 1654 kfree(ctx); 1655 goto out; 1656 } 1657 1658 /* Fetch the defaults for the old API, in the new API drivers 1659 * should write defaults into ctx themselves. 1660 */ 1661 rxfh_dev.indir = (u32 *)rss_config; 1662 rxfh_dev.indir_size = dev_indir_size; 1663 1664 rxfh_dev.key = rss_config + indir_bytes; 1665 rxfh_dev.key_size = dev_key_size; 1666 1667 ret = ops->get_rxfh(dev, &rxfh_dev); 1668 if (WARN_ON(ret)) { 1669 xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context); 1670 kfree(ctx); 1671 goto out; 1672 } 1673 } 1674 if (rxfh_dev.rss_delete) { 1675 WARN_ON(xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context) != ctx); 1676 kfree(ctx); 1677 } else if (ctx) { 1678 if (rxfh_dev.indir) { 1679 for (i = 0; i < dev_indir_size; i++) 1680 ethtool_rxfh_context_indir(ctx)[i] = rxfh_dev.indir[i]; 1681 ctx->indir_configured = 1682 rxfh.indir_size && 1683 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE; 1684 } 1685 if (rxfh_dev.key) { 1686 memcpy(ethtool_rxfh_context_key(ctx), rxfh_dev.key, 1687 dev_key_size); 1688 ctx->key_configured = !!rxfh.key_size; 1689 } 1690 if (rxfh_dev.hfunc != ETH_RSS_HASH_NO_CHANGE) 1691 ctx->hfunc = rxfh_dev.hfunc; 1692 if (rxfh_dev.input_xfrm != RXH_XFRM_NO_CHANGE) 1693 ctx->input_xfrm = rxfh_dev.input_xfrm; 1694 } 1695 1696 out: 1697 if (locked) 1698 mutex_unlock(&dev->ethtool->rss_lock); 1699 kfree(rss_config); 1700 return ret; 1701 } 1702 1703 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) 1704 { 1705 struct ethtool_regs regs; 1706 const struct ethtool_ops *ops = dev->ethtool_ops; 1707 void *regbuf; 1708 int reglen, ret; 1709 1710 if (!ops->get_regs || !ops->get_regs_len) 1711 return -EOPNOTSUPP; 1712 1713 if (copy_from_user(®s, useraddr, sizeof(regs))) 1714 return -EFAULT; 1715 1716 reglen = ops->get_regs_len(dev); 1717 if (reglen <= 0) 1718 return reglen; 1719 1720 if (regs.len > reglen) 1721 regs.len = reglen; 1722 1723 regbuf = vzalloc(reglen); 1724 if (!regbuf) 1725 return -ENOMEM; 1726 1727 if (regs.len < reglen) 1728 reglen = regs.len; 1729 1730 ops->get_regs(dev, ®s, regbuf); 1731 1732 ret = -EFAULT; 1733 if (copy_to_user(useraddr, ®s, sizeof(regs))) 1734 goto out; 1735 useraddr += offsetof(struct ethtool_regs, data); 1736 if (copy_to_user(useraddr, regbuf, reglen)) 1737 goto out; 1738 ret = 0; 1739 1740 out: 1741 vfree(regbuf); 1742 return ret; 1743 } 1744 1745 static int ethtool_reset(struct net_device *dev, char __user *useraddr) 1746 { 1747 struct ethtool_value reset; 1748 int ret; 1749 1750 if (!dev->ethtool_ops->reset) 1751 return -EOPNOTSUPP; 1752 1753 if (dev->ethtool->module_fw_flash_in_progress) 1754 return -EBUSY; 1755 1756 if (copy_from_user(&reset, useraddr, sizeof(reset))) 1757 return -EFAULT; 1758 1759 ret = dev->ethtool_ops->reset(dev, &reset.data); 1760 if (ret) 1761 return ret; 1762 1763 if (copy_to_user(useraddr, &reset, sizeof(reset))) 1764 return -EFAULT; 1765 return 0; 1766 } 1767 1768 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) 1769 { 1770 struct ethtool_wolinfo wol; 1771 1772 if (!dev->ethtool_ops->get_wol) 1773 return -EOPNOTSUPP; 1774 1775 memset(&wol, 0, sizeof(struct ethtool_wolinfo)); 1776 wol.cmd = ETHTOOL_GWOL; 1777 dev->ethtool_ops->get_wol(dev, &wol); 1778 1779 if (copy_to_user(useraddr, &wol, sizeof(wol))) 1780 return -EFAULT; 1781 return 0; 1782 } 1783 1784 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) 1785 { 1786 struct ethtool_wolinfo wol, cur_wol; 1787 int ret; 1788 1789 if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol) 1790 return -EOPNOTSUPP; 1791 1792 memset(&cur_wol, 0, sizeof(struct ethtool_wolinfo)); 1793 cur_wol.cmd = ETHTOOL_GWOL; 1794 dev->ethtool_ops->get_wol(dev, &cur_wol); 1795 1796 if (copy_from_user(&wol, useraddr, sizeof(wol))) 1797 return -EFAULT; 1798 1799 if (wol.wolopts & ~cur_wol.supported) 1800 return -EINVAL; 1801 1802 if (wol.wolopts == cur_wol.wolopts && 1803 !memcmp(wol.sopass, cur_wol.sopass, sizeof(wol.sopass))) 1804 return 0; 1805 1806 ret = dev->ethtool_ops->set_wol(dev, &wol); 1807 if (ret) 1808 return ret; 1809 1810 dev->ethtool->wol_enabled = !!wol.wolopts; 1811 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL); 1812 1813 return 0; 1814 } 1815 1816 static void eee_to_keee(struct ethtool_keee *keee, 1817 const struct ethtool_eee *eee) 1818 { 1819 memset(keee, 0, sizeof(*keee)); 1820 1821 keee->eee_enabled = eee->eee_enabled; 1822 keee->tx_lpi_enabled = eee->tx_lpi_enabled; 1823 keee->tx_lpi_timer = eee->tx_lpi_timer; 1824 1825 ethtool_convert_legacy_u32_to_link_mode(keee->advertised, 1826 eee->advertised); 1827 } 1828 1829 static void keee_to_eee(struct ethtool_eee *eee, 1830 const struct ethtool_keee *keee) 1831 { 1832 bool overflow; 1833 1834 memset(eee, 0, sizeof(*eee)); 1835 1836 eee->eee_active = keee->eee_active; 1837 eee->eee_enabled = keee->eee_enabled; 1838 eee->tx_lpi_enabled = keee->tx_lpi_enabled; 1839 eee->tx_lpi_timer = keee->tx_lpi_timer; 1840 1841 overflow = !ethtool_convert_link_mode_to_legacy_u32(&eee->supported, 1842 keee->supported); 1843 ethtool_convert_link_mode_to_legacy_u32(&eee->advertised, 1844 keee->advertised); 1845 ethtool_convert_link_mode_to_legacy_u32(&eee->lp_advertised, 1846 keee->lp_advertised); 1847 if (overflow) 1848 pr_warn("Ethtool ioctl interface doesn't support passing EEE linkmodes beyond bit 32\n"); 1849 } 1850 1851 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) 1852 { 1853 struct ethtool_keee keee; 1854 struct ethtool_eee eee; 1855 int rc; 1856 1857 if (!dev->ethtool_ops->get_eee) 1858 return -EOPNOTSUPP; 1859 1860 memset(&keee, 0, sizeof(keee)); 1861 rc = dev->ethtool_ops->get_eee(dev, &keee); 1862 if (rc) 1863 return rc; 1864 1865 keee_to_eee(&eee, &keee); 1866 if (copy_to_user(useraddr, &eee, sizeof(eee))) 1867 return -EFAULT; 1868 1869 return 0; 1870 } 1871 1872 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) 1873 { 1874 struct ethtool_keee keee; 1875 struct ethtool_eee eee; 1876 int ret; 1877 1878 if (!dev->ethtool_ops->set_eee) 1879 return -EOPNOTSUPP; 1880 1881 if (copy_from_user(&eee, useraddr, sizeof(eee))) 1882 return -EFAULT; 1883 1884 eee_to_keee(&keee, &eee); 1885 ret = dev->ethtool_ops->set_eee(dev, &keee); 1886 if (!ret) 1887 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL); 1888 return ret; 1889 } 1890 1891 static int ethtool_nway_reset(struct net_device *dev) 1892 { 1893 if (!dev->ethtool_ops->nway_reset) 1894 return -EOPNOTSUPP; 1895 1896 return dev->ethtool_ops->nway_reset(dev); 1897 } 1898 1899 static int ethtool_get_link(struct net_device *dev, char __user *useraddr) 1900 { 1901 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; 1902 int link = __ethtool_get_link(dev); 1903 1904 if (link < 0) 1905 return link; 1906 1907 edata.data = link; 1908 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1909 return -EFAULT; 1910 return 0; 1911 } 1912 1913 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, 1914 int (*getter)(struct net_device *, 1915 struct ethtool_eeprom *, u8 *), 1916 u32 total_len) 1917 { 1918 struct ethtool_eeprom eeprom; 1919 void __user *userbuf = useraddr + sizeof(eeprom); 1920 u32 bytes_remaining; 1921 u8 *data; 1922 int ret = 0; 1923 1924 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1925 return -EFAULT; 1926 1927 /* Check for wrap and zero */ 1928 if (eeprom.offset + eeprom.len <= eeprom.offset) 1929 return -EINVAL; 1930 1931 /* Check for exceeding total eeprom len */ 1932 if (eeprom.offset + eeprom.len > total_len) 1933 return -EINVAL; 1934 1935 data = kzalloc(PAGE_SIZE, GFP_USER); 1936 if (!data) 1937 return -ENOMEM; 1938 1939 bytes_remaining = eeprom.len; 1940 while (bytes_remaining > 0) { 1941 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1942 1943 ret = getter(dev, &eeprom, data); 1944 if (ret) 1945 break; 1946 if (!eeprom.len) { 1947 ret = -EIO; 1948 break; 1949 } 1950 if (copy_to_user(userbuf, data, eeprom.len)) { 1951 ret = -EFAULT; 1952 break; 1953 } 1954 userbuf += eeprom.len; 1955 eeprom.offset += eeprom.len; 1956 bytes_remaining -= eeprom.len; 1957 } 1958 1959 eeprom.len = userbuf - (useraddr + sizeof(eeprom)); 1960 eeprom.offset -= eeprom.len; 1961 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) 1962 ret = -EFAULT; 1963 1964 kfree(data); 1965 return ret; 1966 } 1967 1968 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) 1969 { 1970 const struct ethtool_ops *ops = dev->ethtool_ops; 1971 1972 if (!ops->get_eeprom || !ops->get_eeprom_len || 1973 !ops->get_eeprom_len(dev)) 1974 return -EOPNOTSUPP; 1975 1976 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, 1977 ops->get_eeprom_len(dev)); 1978 } 1979 1980 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) 1981 { 1982 struct ethtool_eeprom eeprom; 1983 const struct ethtool_ops *ops = dev->ethtool_ops; 1984 void __user *userbuf = useraddr + sizeof(eeprom); 1985 u32 bytes_remaining; 1986 u8 *data; 1987 int ret = 0; 1988 1989 if (!ops->set_eeprom || !ops->get_eeprom_len || 1990 !ops->get_eeprom_len(dev)) 1991 return -EOPNOTSUPP; 1992 1993 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1994 return -EFAULT; 1995 1996 /* Check for wrap and zero */ 1997 if (eeprom.offset + eeprom.len <= eeprom.offset) 1998 return -EINVAL; 1999 2000 /* Check for exceeding total eeprom len */ 2001 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) 2002 return -EINVAL; 2003 2004 data = kzalloc(PAGE_SIZE, GFP_USER); 2005 if (!data) 2006 return -ENOMEM; 2007 2008 bytes_remaining = eeprom.len; 2009 while (bytes_remaining > 0) { 2010 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 2011 2012 if (copy_from_user(data, userbuf, eeprom.len)) { 2013 ret = -EFAULT; 2014 break; 2015 } 2016 ret = ops->set_eeprom(dev, &eeprom, data); 2017 if (ret) 2018 break; 2019 userbuf += eeprom.len; 2020 eeprom.offset += eeprom.len; 2021 bytes_remaining -= eeprom.len; 2022 } 2023 2024 kfree(data); 2025 return ret; 2026 } 2027 2028 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, 2029 void __user *useraddr) 2030 { 2031 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2032 struct kernel_ethtool_coalesce kernel_coalesce = {}; 2033 int ret; 2034 2035 if (!dev->ethtool_ops->get_coalesce) 2036 return -EOPNOTSUPP; 2037 2038 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 2039 NULL); 2040 if (ret) 2041 return ret; 2042 2043 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2044 return -EFAULT; 2045 return 0; 2046 } 2047 2048 static bool 2049 ethtool_set_coalesce_supported(struct net_device *dev, 2050 struct ethtool_coalesce *coalesce) 2051 { 2052 u32 supported_params = dev->ethtool_ops->supported_coalesce_params; 2053 u32 nonzero_params = 0; 2054 2055 if (coalesce->rx_coalesce_usecs) 2056 nonzero_params |= ETHTOOL_COALESCE_RX_USECS; 2057 if (coalesce->rx_max_coalesced_frames) 2058 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; 2059 if (coalesce->rx_coalesce_usecs_irq) 2060 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; 2061 if (coalesce->rx_max_coalesced_frames_irq) 2062 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; 2063 if (coalesce->tx_coalesce_usecs) 2064 nonzero_params |= ETHTOOL_COALESCE_TX_USECS; 2065 if (coalesce->tx_max_coalesced_frames) 2066 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; 2067 if (coalesce->tx_coalesce_usecs_irq) 2068 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; 2069 if (coalesce->tx_max_coalesced_frames_irq) 2070 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; 2071 if (coalesce->stats_block_coalesce_usecs) 2072 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; 2073 if (coalesce->use_adaptive_rx_coalesce) 2074 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; 2075 if (coalesce->use_adaptive_tx_coalesce) 2076 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; 2077 if (coalesce->pkt_rate_low) 2078 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; 2079 if (coalesce->rx_coalesce_usecs_low) 2080 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; 2081 if (coalesce->rx_max_coalesced_frames_low) 2082 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; 2083 if (coalesce->tx_coalesce_usecs_low) 2084 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; 2085 if (coalesce->tx_max_coalesced_frames_low) 2086 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; 2087 if (coalesce->pkt_rate_high) 2088 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; 2089 if (coalesce->rx_coalesce_usecs_high) 2090 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; 2091 if (coalesce->rx_max_coalesced_frames_high) 2092 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; 2093 if (coalesce->tx_coalesce_usecs_high) 2094 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; 2095 if (coalesce->tx_max_coalesced_frames_high) 2096 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; 2097 if (coalesce->rate_sample_interval) 2098 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; 2099 2100 return (supported_params & nonzero_params) == nonzero_params; 2101 } 2102 2103 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, 2104 void __user *useraddr) 2105 { 2106 struct kernel_ethtool_coalesce kernel_coalesce = {}; 2107 struct ethtool_coalesce coalesce; 2108 int ret; 2109 2110 if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce) 2111 return -EOPNOTSUPP; 2112 2113 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 2114 NULL); 2115 if (ret) 2116 return ret; 2117 2118 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) 2119 return -EFAULT; 2120 2121 if (!ethtool_set_coalesce_supported(dev, &coalesce)) 2122 return -EOPNOTSUPP; 2123 2124 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, 2125 NULL); 2126 if (!ret) 2127 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL); 2128 return ret; 2129 } 2130 2131 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) 2132 { 2133 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; 2134 struct kernel_ethtool_ringparam kernel_ringparam = {}; 2135 2136 if (!dev->ethtool_ops->get_ringparam) 2137 return -EOPNOTSUPP; 2138 2139 dev->ethtool_ops->get_ringparam(dev, &ringparam, 2140 &kernel_ringparam, NULL); 2141 2142 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) 2143 return -EFAULT; 2144 return 0; 2145 } 2146 2147 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) 2148 { 2149 struct kernel_ethtool_ringparam kernel_ringparam; 2150 struct ethtool_ringparam ringparam, max; 2151 int ret; 2152 2153 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) 2154 return -EOPNOTSUPP; 2155 2156 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) 2157 return -EFAULT; 2158 2159 ethtool_ringparam_get_cfg(dev, &max, &kernel_ringparam, NULL); 2160 2161 /* ensure new ring parameters are within the maximums */ 2162 if (ringparam.rx_pending > max.rx_max_pending || 2163 ringparam.rx_mini_pending > max.rx_mini_max_pending || 2164 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || 2165 ringparam.tx_pending > max.tx_max_pending) 2166 return -EINVAL; 2167 2168 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, 2169 &kernel_ringparam, NULL); 2170 if (!ret) 2171 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL); 2172 return ret; 2173 } 2174 2175 static noinline_for_stack int ethtool_get_channels(struct net_device *dev, 2176 void __user *useraddr) 2177 { 2178 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; 2179 2180 if (!dev->ethtool_ops->get_channels) 2181 return -EOPNOTSUPP; 2182 2183 dev->ethtool_ops->get_channels(dev, &channels); 2184 2185 if (copy_to_user(useraddr, &channels, sizeof(channels))) 2186 return -EFAULT; 2187 return 0; 2188 } 2189 2190 static noinline_for_stack int ethtool_set_channels(struct net_device *dev, 2191 void __user *useraddr) 2192 { 2193 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; 2194 u16 from_channel, to_channel; 2195 unsigned int i; 2196 int ret; 2197 2198 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) 2199 return -EOPNOTSUPP; 2200 2201 if (copy_from_user(&channels, useraddr, sizeof(channels))) 2202 return -EFAULT; 2203 2204 dev->ethtool_ops->get_channels(dev, &curr); 2205 2206 if (channels.rx_count == curr.rx_count && 2207 channels.tx_count == curr.tx_count && 2208 channels.combined_count == curr.combined_count && 2209 channels.other_count == curr.other_count) 2210 return 0; 2211 2212 /* ensure new counts are within the maximums */ 2213 if (channels.rx_count > curr.max_rx || 2214 channels.tx_count > curr.max_tx || 2215 channels.combined_count > curr.max_combined || 2216 channels.other_count > curr.max_other) 2217 return -EINVAL; 2218 2219 /* ensure there is at least one RX and one TX channel */ 2220 if (!channels.combined_count && 2221 (!channels.rx_count || !channels.tx_count)) 2222 return -EINVAL; 2223 2224 ret = ethtool_check_max_channel(dev, channels, NULL); 2225 if (ret) 2226 return ret; 2227 2228 /* Disabling channels, query zero-copy AF_XDP sockets */ 2229 from_channel = channels.combined_count + 2230 min(channels.rx_count, channels.tx_count); 2231 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); 2232 for (i = from_channel; i < to_channel; i++) 2233 if (xsk_get_pool_from_qid(dev, i)) 2234 return -EINVAL; 2235 2236 ret = dev->ethtool_ops->set_channels(dev, &channels); 2237 if (!ret) 2238 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL); 2239 return ret; 2240 } 2241 2242 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) 2243 { 2244 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; 2245 2246 if (!dev->ethtool_ops->get_pauseparam) 2247 return -EOPNOTSUPP; 2248 2249 dev->ethtool_ops->get_pauseparam(dev, &pauseparam); 2250 2251 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) 2252 return -EFAULT; 2253 return 0; 2254 } 2255 2256 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) 2257 { 2258 struct ethtool_pauseparam pauseparam; 2259 int ret; 2260 2261 if (!dev->ethtool_ops->set_pauseparam) 2262 return -EOPNOTSUPP; 2263 2264 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) 2265 return -EFAULT; 2266 2267 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); 2268 if (!ret) 2269 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL); 2270 return ret; 2271 } 2272 2273 static int ethtool_self_test(struct net_device *dev, char __user *useraddr) 2274 { 2275 struct ethtool_test test; 2276 const struct ethtool_ops *ops = dev->ethtool_ops; 2277 u64 *data; 2278 int ret, test_len; 2279 2280 if (!ops->self_test || !ops->get_sset_count) 2281 return -EOPNOTSUPP; 2282 2283 test_len = ops->get_sset_count(dev, ETH_SS_TEST); 2284 if (test_len < 0) 2285 return test_len; 2286 WARN_ON(test_len == 0); 2287 2288 if (copy_from_user(&test, useraddr, sizeof(test))) 2289 return -EFAULT; 2290 2291 test.len = test_len; 2292 data = kcalloc(test_len, sizeof(u64), GFP_USER); 2293 if (!data) 2294 return -ENOMEM; 2295 2296 netif_testing_on(dev); 2297 ops->self_test(dev, &test, data); 2298 netif_testing_off(dev); 2299 2300 ret = -EFAULT; 2301 if (copy_to_user(useraddr, &test, sizeof(test))) 2302 goto out; 2303 useraddr += sizeof(test); 2304 if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) 2305 goto out; 2306 ret = 0; 2307 2308 out: 2309 kfree(data); 2310 return ret; 2311 } 2312 2313 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) 2314 { 2315 struct ethtool_gstrings gstrings; 2316 u8 *data; 2317 int ret; 2318 2319 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) 2320 return -EFAULT; 2321 2322 ret = __ethtool_get_sset_count(dev, gstrings.string_set); 2323 if (ret < 0) 2324 return ret; 2325 if (ret > S32_MAX / ETH_GSTRING_LEN) 2326 return -ENOMEM; 2327 WARN_ON_ONCE(!ret); 2328 2329 gstrings.len = ret; 2330 2331 if (gstrings.len) { 2332 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); 2333 if (!data) 2334 return -ENOMEM; 2335 2336 __ethtool_get_strings(dev, gstrings.string_set, data); 2337 } else { 2338 data = NULL; 2339 } 2340 2341 ret = -EFAULT; 2342 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) 2343 goto out; 2344 useraddr += sizeof(gstrings); 2345 if (gstrings.len && 2346 copy_to_user(useraddr, data, 2347 array_size(gstrings.len, ETH_GSTRING_LEN))) 2348 goto out; 2349 ret = 0; 2350 2351 out: 2352 vfree(data); 2353 return ret; 2354 } 2355 2356 __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) 2357 { 2358 va_list args; 2359 2360 va_start(args, fmt); 2361 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); 2362 va_end(args); 2363 2364 *data += ETH_GSTRING_LEN; 2365 } 2366 EXPORT_SYMBOL(ethtool_sprintf); 2367 2368 void ethtool_puts(u8 **data, const char *str) 2369 { 2370 strscpy(*data, str, ETH_GSTRING_LEN); 2371 *data += ETH_GSTRING_LEN; 2372 } 2373 EXPORT_SYMBOL(ethtool_puts); 2374 2375 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) 2376 { 2377 struct ethtool_value id; 2378 static bool busy; 2379 const struct ethtool_ops *ops = dev->ethtool_ops; 2380 netdevice_tracker dev_tracker; 2381 int rc; 2382 2383 if (!ops->set_phys_id) 2384 return -EOPNOTSUPP; 2385 2386 if (busy) 2387 return -EBUSY; 2388 2389 if (copy_from_user(&id, useraddr, sizeof(id))) 2390 return -EFAULT; 2391 2392 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); 2393 if (rc < 0) 2394 return rc; 2395 2396 /* Drop the RTNL lock while waiting, but prevent reentry or 2397 * removal of the device. 2398 */ 2399 busy = true; 2400 netdev_hold(dev, &dev_tracker, GFP_KERNEL); 2401 netdev_unlock_ops(dev); 2402 rtnl_unlock(); 2403 2404 if (rc == 0) { 2405 /* Driver will handle this itself */ 2406 schedule_timeout_interruptible( 2407 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); 2408 } else { 2409 /* Driver expects to be called at twice the frequency in rc */ 2410 int n = rc * 2, interval = HZ / n; 2411 u64 count = mul_u32_u32(n, id.data); 2412 u64 i = 0; 2413 2414 do { 2415 rtnl_lock(); 2416 netdev_lock_ops(dev); 2417 rc = ops->set_phys_id(dev, 2418 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); 2419 netdev_unlock_ops(dev); 2420 rtnl_unlock(); 2421 if (rc) 2422 break; 2423 schedule_timeout_interruptible(interval); 2424 } while (!signal_pending(current) && (!id.data || i < count)); 2425 } 2426 2427 rtnl_lock(); 2428 netdev_lock_ops(dev); 2429 netdev_put(dev, &dev_tracker); 2430 busy = false; 2431 2432 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); 2433 return rc; 2434 } 2435 2436 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) 2437 { 2438 struct ethtool_stats stats; 2439 const struct ethtool_ops *ops = dev->ethtool_ops; 2440 u64 *data; 2441 int ret, n_stats; 2442 2443 if (!ops->get_ethtool_stats || !ops->get_sset_count) 2444 return -EOPNOTSUPP; 2445 2446 n_stats = ops->get_sset_count(dev, ETH_SS_STATS); 2447 if (n_stats < 0) 2448 return n_stats; 2449 if (n_stats > S32_MAX / sizeof(u64)) 2450 return -ENOMEM; 2451 WARN_ON_ONCE(!n_stats); 2452 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2453 return -EFAULT; 2454 2455 stats.n_stats = n_stats; 2456 2457 if (n_stats) { 2458 data = vzalloc(array_size(n_stats, sizeof(u64))); 2459 if (!data) 2460 return -ENOMEM; 2461 ops->get_ethtool_stats(dev, &stats, data); 2462 } else { 2463 data = NULL; 2464 } 2465 2466 ret = -EFAULT; 2467 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2468 goto out; 2469 useraddr += sizeof(stats); 2470 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) 2471 goto out; 2472 ret = 0; 2473 2474 out: 2475 vfree(data); 2476 return ret; 2477 } 2478 2479 static int ethtool_vzalloc_stats_array(int n_stats, u64 **data) 2480 { 2481 if (n_stats < 0) 2482 return n_stats; 2483 if (n_stats > S32_MAX / sizeof(u64)) 2484 return -ENOMEM; 2485 if (WARN_ON_ONCE(!n_stats)) 2486 return -EOPNOTSUPP; 2487 2488 *data = vzalloc(array_size(n_stats, sizeof(u64))); 2489 if (!*data) 2490 return -ENOMEM; 2491 2492 return 0; 2493 } 2494 2495 static int ethtool_get_phy_stats_phydev(struct phy_device *phydev, 2496 struct ethtool_stats *stats, 2497 u64 **data) 2498 { 2499 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 2500 int n_stats, ret; 2501 2502 if (!phy_ops || !phy_ops->get_sset_count || !phy_ops->get_stats) 2503 return -EOPNOTSUPP; 2504 2505 n_stats = phy_ops->get_sset_count(phydev); 2506 2507 ret = ethtool_vzalloc_stats_array(n_stats, data); 2508 if (ret) 2509 return ret; 2510 2511 stats->n_stats = n_stats; 2512 return phy_ops->get_stats(phydev, stats, *data); 2513 } 2514 2515 static int ethtool_get_phy_stats_ethtool(struct net_device *dev, 2516 struct ethtool_stats *stats, 2517 u64 **data) 2518 { 2519 const struct ethtool_ops *ops = dev->ethtool_ops; 2520 int n_stats, ret; 2521 2522 if (!ops || !ops->get_sset_count || !ops->get_ethtool_phy_stats) 2523 return -EOPNOTSUPP; 2524 2525 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); 2526 2527 ret = ethtool_vzalloc_stats_array(n_stats, data); 2528 if (ret) 2529 return ret; 2530 2531 stats->n_stats = n_stats; 2532 ops->get_ethtool_phy_stats(dev, stats, *data); 2533 2534 return 0; 2535 } 2536 2537 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) 2538 { 2539 struct phy_device *phydev = dev->phydev; 2540 struct ethtool_stats stats; 2541 u64 *data = NULL; 2542 int ret = -EOPNOTSUPP; 2543 2544 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2545 return -EFAULT; 2546 2547 if (phydev) 2548 ret = ethtool_get_phy_stats_phydev(phydev, &stats, &data); 2549 2550 if (ret == -EOPNOTSUPP) 2551 ret = ethtool_get_phy_stats_ethtool(dev, &stats, &data); 2552 2553 if (ret) 2554 goto out; 2555 2556 if (copy_to_user(useraddr, &stats, sizeof(stats))) { 2557 ret = -EFAULT; 2558 goto out; 2559 } 2560 2561 useraddr += sizeof(stats); 2562 if (copy_to_user(useraddr, data, array_size(stats.n_stats, sizeof(u64)))) 2563 ret = -EFAULT; 2564 2565 out: 2566 vfree(data); 2567 return ret; 2568 } 2569 2570 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) 2571 { 2572 struct ethtool_perm_addr epaddr; 2573 2574 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) 2575 return -EFAULT; 2576 2577 if (epaddr.size < dev->addr_len) 2578 return -ETOOSMALL; 2579 epaddr.size = dev->addr_len; 2580 2581 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) 2582 return -EFAULT; 2583 useraddr += sizeof(epaddr); 2584 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) 2585 return -EFAULT; 2586 return 0; 2587 } 2588 2589 static int ethtool_get_value(struct net_device *dev, char __user *useraddr, 2590 u32 cmd, u32 (*actor)(struct net_device *)) 2591 { 2592 struct ethtool_value edata = { .cmd = cmd }; 2593 2594 if (!actor) 2595 return -EOPNOTSUPP; 2596 2597 edata.data = actor(dev); 2598 2599 if (copy_to_user(useraddr, &edata, sizeof(edata))) 2600 return -EFAULT; 2601 return 0; 2602 } 2603 2604 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, 2605 void (*actor)(struct net_device *, u32)) 2606 { 2607 struct ethtool_value edata; 2608 2609 if (!actor) 2610 return -EOPNOTSUPP; 2611 2612 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2613 return -EFAULT; 2614 2615 actor(dev, edata.data); 2616 return 0; 2617 } 2618 2619 static int ethtool_set_value(struct net_device *dev, char __user *useraddr, 2620 int (*actor)(struct net_device *, u32)) 2621 { 2622 struct ethtool_value edata; 2623 2624 if (!actor) 2625 return -EOPNOTSUPP; 2626 2627 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2628 return -EFAULT; 2629 2630 return actor(dev, edata.data); 2631 } 2632 2633 static int 2634 ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) 2635 { 2636 if (!dev->ethtool_ops->flash_device) { 2637 req->devlink = netdev_to_devlink_get(dev); 2638 return 0; 2639 } 2640 2641 return dev->ethtool_ops->flash_device(dev, &req->efl); 2642 } 2643 2644 static int ethtool_set_dump(struct net_device *dev, 2645 void __user *useraddr) 2646 { 2647 struct ethtool_dump dump; 2648 2649 if (!dev->ethtool_ops->set_dump) 2650 return -EOPNOTSUPP; 2651 2652 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2653 return -EFAULT; 2654 2655 return dev->ethtool_ops->set_dump(dev, &dump); 2656 } 2657 2658 static int ethtool_get_dump_flag(struct net_device *dev, 2659 void __user *useraddr) 2660 { 2661 int ret; 2662 struct ethtool_dump dump; 2663 const struct ethtool_ops *ops = dev->ethtool_ops; 2664 2665 if (!ops->get_dump_flag) 2666 return -EOPNOTSUPP; 2667 2668 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2669 return -EFAULT; 2670 2671 ret = ops->get_dump_flag(dev, &dump); 2672 if (ret) 2673 return ret; 2674 2675 if (copy_to_user(useraddr, &dump, sizeof(dump))) 2676 return -EFAULT; 2677 return 0; 2678 } 2679 2680 static int ethtool_get_dump_data(struct net_device *dev, 2681 void __user *useraddr) 2682 { 2683 int ret; 2684 __u32 len; 2685 struct ethtool_dump dump, tmp; 2686 const struct ethtool_ops *ops = dev->ethtool_ops; 2687 void *data = NULL; 2688 2689 if (!ops->get_dump_data || !ops->get_dump_flag) 2690 return -EOPNOTSUPP; 2691 2692 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2693 return -EFAULT; 2694 2695 memset(&tmp, 0, sizeof(tmp)); 2696 tmp.cmd = ETHTOOL_GET_DUMP_FLAG; 2697 ret = ops->get_dump_flag(dev, &tmp); 2698 if (ret) 2699 return ret; 2700 2701 len = min(tmp.len, dump.len); 2702 if (!len) 2703 return -EFAULT; 2704 2705 /* Don't ever let the driver think there's more space available 2706 * than it requested with .get_dump_flag(). 2707 */ 2708 dump.len = len; 2709 2710 /* Always allocate enough space to hold the whole thing so that the 2711 * driver does not need to check the length and bother with partial 2712 * dumping. 2713 */ 2714 data = vzalloc(tmp.len); 2715 if (!data) 2716 return -ENOMEM; 2717 ret = ops->get_dump_data(dev, &dump, data); 2718 if (ret) 2719 goto out; 2720 2721 /* There are two sane possibilities: 2722 * 1. The driver's .get_dump_data() does not touch dump.len. 2723 * 2. Or it may set dump.len to how much it really writes, which 2724 * should be tmp.len (or len if it can do a partial dump). 2725 * In any case respond to userspace with the actual length of data 2726 * it's receiving. 2727 */ 2728 WARN_ON(dump.len != len && dump.len != tmp.len); 2729 dump.len = len; 2730 2731 if (copy_to_user(useraddr, &dump, sizeof(dump))) { 2732 ret = -EFAULT; 2733 goto out; 2734 } 2735 useraddr += offsetof(struct ethtool_dump, data); 2736 if (copy_to_user(useraddr, data, len)) 2737 ret = -EFAULT; 2738 out: 2739 vfree(data); 2740 return ret; 2741 } 2742 2743 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) 2744 { 2745 struct kernel_ethtool_ts_info kernel_info; 2746 struct ethtool_ts_info info = {}; 2747 int err; 2748 2749 err = __ethtool_get_ts_info(dev, &kernel_info); 2750 if (err) 2751 return err; 2752 2753 info.cmd = kernel_info.cmd; 2754 info.so_timestamping = kernel_info.so_timestamping; 2755 info.phc_index = kernel_info.phc_index; 2756 info.tx_types = kernel_info.tx_types; 2757 info.rx_filters = kernel_info.rx_filters; 2758 2759 if (copy_to_user(useraddr, &info, sizeof(info))) 2760 return -EFAULT; 2761 2762 return 0; 2763 } 2764 2765 int ethtool_get_module_info_call(struct net_device *dev, 2766 struct ethtool_modinfo *modinfo) 2767 { 2768 const struct ethtool_ops *ops = dev->ethtool_ops; 2769 struct phy_device *phydev = dev->phydev; 2770 2771 if (dev->ethtool->module_fw_flash_in_progress) 2772 return -EBUSY; 2773 2774 if (dev->sfp_bus) 2775 return sfp_get_module_info(dev->sfp_bus, modinfo); 2776 2777 if (phydev && phydev->drv && phydev->drv->module_info) 2778 return phydev->drv->module_info(phydev, modinfo); 2779 2780 if (ops->get_module_info) 2781 return ops->get_module_info(dev, modinfo); 2782 2783 return -EOPNOTSUPP; 2784 } 2785 2786 static int ethtool_get_module_info(struct net_device *dev, 2787 void __user *useraddr) 2788 { 2789 int ret; 2790 struct ethtool_modinfo modinfo; 2791 2792 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) 2793 return -EFAULT; 2794 2795 ret = ethtool_get_module_info_call(dev, &modinfo); 2796 if (ret) 2797 return ret; 2798 2799 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) 2800 return -EFAULT; 2801 2802 return 0; 2803 } 2804 2805 int ethtool_get_module_eeprom_call(struct net_device *dev, 2806 struct ethtool_eeprom *ee, u8 *data) 2807 { 2808 const struct ethtool_ops *ops = dev->ethtool_ops; 2809 struct phy_device *phydev = dev->phydev; 2810 2811 if (dev->ethtool->module_fw_flash_in_progress) 2812 return -EBUSY; 2813 2814 if (dev->sfp_bus) 2815 return sfp_get_module_eeprom(dev->sfp_bus, ee, data); 2816 2817 if (phydev && phydev->drv && phydev->drv->module_eeprom) 2818 return phydev->drv->module_eeprom(phydev, ee, data); 2819 2820 if (ops->get_module_eeprom) 2821 return ops->get_module_eeprom(dev, ee, data); 2822 2823 return -EOPNOTSUPP; 2824 } 2825 2826 static int ethtool_get_module_eeprom(struct net_device *dev, 2827 void __user *useraddr) 2828 { 2829 int ret; 2830 struct ethtool_modinfo modinfo; 2831 2832 ret = ethtool_get_module_info_call(dev, &modinfo); 2833 if (ret) 2834 return ret; 2835 2836 return ethtool_get_any_eeprom(dev, useraddr, 2837 ethtool_get_module_eeprom_call, 2838 modinfo.eeprom_len); 2839 } 2840 2841 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) 2842 { 2843 switch (tuna->id) { 2844 case ETHTOOL_RX_COPYBREAK: 2845 case ETHTOOL_TX_COPYBREAK: 2846 case ETHTOOL_TX_COPYBREAK_BUF_SIZE: 2847 if (tuna->len != sizeof(u32) || 2848 tuna->type_id != ETHTOOL_TUNABLE_U32) 2849 return -EINVAL; 2850 break; 2851 case ETHTOOL_PFC_PREVENTION_TOUT: 2852 if (tuna->len != sizeof(u16) || 2853 tuna->type_id != ETHTOOL_TUNABLE_U16) 2854 return -EINVAL; 2855 break; 2856 default: 2857 return -EINVAL; 2858 } 2859 2860 return 0; 2861 } 2862 2863 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) 2864 { 2865 int ret; 2866 struct ethtool_tunable tuna; 2867 const struct ethtool_ops *ops = dev->ethtool_ops; 2868 void *data; 2869 2870 if (!ops->get_tunable) 2871 return -EOPNOTSUPP; 2872 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2873 return -EFAULT; 2874 ret = ethtool_tunable_valid(&tuna); 2875 if (ret) 2876 return ret; 2877 data = kzalloc(tuna.len, GFP_USER); 2878 if (!data) 2879 return -ENOMEM; 2880 ret = ops->get_tunable(dev, &tuna, data); 2881 if (ret) 2882 goto out; 2883 useraddr += sizeof(tuna); 2884 ret = -EFAULT; 2885 if (copy_to_user(useraddr, data, tuna.len)) 2886 goto out; 2887 ret = 0; 2888 2889 out: 2890 kfree(data); 2891 return ret; 2892 } 2893 2894 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) 2895 { 2896 int ret; 2897 struct ethtool_tunable tuna; 2898 const struct ethtool_ops *ops = dev->ethtool_ops; 2899 void *data; 2900 2901 if (!ops->set_tunable) 2902 return -EOPNOTSUPP; 2903 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2904 return -EFAULT; 2905 ret = ethtool_tunable_valid(&tuna); 2906 if (ret) 2907 return ret; 2908 useraddr += sizeof(tuna); 2909 data = memdup_user(useraddr, tuna.len); 2910 if (IS_ERR(data)) 2911 return PTR_ERR(data); 2912 ret = ops->set_tunable(dev, &tuna, data); 2913 2914 kfree(data); 2915 return ret; 2916 } 2917 2918 static noinline_for_stack int 2919 ethtool_get_per_queue_coalesce(struct net_device *dev, 2920 void __user *useraddr, 2921 struct ethtool_per_queue_op *per_queue_opt) 2922 { 2923 u32 bit; 2924 int ret; 2925 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2926 2927 if (!dev->ethtool_ops->get_per_queue_coalesce) 2928 return -EOPNOTSUPP; 2929 2930 useraddr += sizeof(*per_queue_opt); 2931 2932 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, 2933 MAX_NUM_QUEUE); 2934 2935 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2936 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2937 2938 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); 2939 if (ret != 0) 2940 return ret; 2941 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2942 return -EFAULT; 2943 useraddr += sizeof(coalesce); 2944 } 2945 2946 return 0; 2947 } 2948 2949 static noinline_for_stack int 2950 ethtool_set_per_queue_coalesce(struct net_device *dev, 2951 void __user *useraddr, 2952 struct ethtool_per_queue_op *per_queue_opt) 2953 { 2954 u32 bit; 2955 int i, ret = 0; 2956 int n_queue; 2957 struct ethtool_coalesce *backup = NULL, *tmp = NULL; 2958 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2959 2960 if ((!dev->ethtool_ops->set_per_queue_coalesce) || 2961 (!dev->ethtool_ops->get_per_queue_coalesce)) 2962 return -EOPNOTSUPP; 2963 2964 useraddr += sizeof(*per_queue_opt); 2965 2966 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); 2967 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); 2968 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); 2969 if (!backup) 2970 return -ENOMEM; 2971 2972 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2973 struct ethtool_coalesce coalesce; 2974 2975 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); 2976 if (ret != 0) 2977 goto roll_back; 2978 2979 tmp++; 2980 2981 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { 2982 ret = -EFAULT; 2983 goto roll_back; 2984 } 2985 2986 if (!ethtool_set_coalesce_supported(dev, &coalesce)) { 2987 ret = -EOPNOTSUPP; 2988 goto roll_back; 2989 } 2990 2991 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); 2992 if (ret != 0) 2993 goto roll_back; 2994 2995 useraddr += sizeof(coalesce); 2996 } 2997 2998 roll_back: 2999 if (ret != 0) { 3000 tmp = backup; 3001 for_each_set_bit(i, queue_mask, bit) { 3002 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); 3003 tmp++; 3004 } 3005 } 3006 kfree(backup); 3007 3008 return ret; 3009 } 3010 3011 static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, 3012 void __user *useraddr, u32 sub_cmd) 3013 { 3014 struct ethtool_per_queue_op per_queue_opt; 3015 3016 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) 3017 return -EFAULT; 3018 3019 if (per_queue_opt.sub_command != sub_cmd) 3020 return -EINVAL; 3021 3022 switch (per_queue_opt.sub_command) { 3023 case ETHTOOL_GCOALESCE: 3024 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); 3025 case ETHTOOL_SCOALESCE: 3026 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); 3027 default: 3028 return -EOPNOTSUPP; 3029 } 3030 } 3031 3032 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) 3033 { 3034 switch (tuna->id) { 3035 case ETHTOOL_PHY_DOWNSHIFT: 3036 case ETHTOOL_PHY_FAST_LINK_DOWN: 3037 if (tuna->len != sizeof(u8) || 3038 tuna->type_id != ETHTOOL_TUNABLE_U8) 3039 return -EINVAL; 3040 break; 3041 case ETHTOOL_PHY_EDPD: 3042 if (tuna->len != sizeof(u16) || 3043 tuna->type_id != ETHTOOL_TUNABLE_U16) 3044 return -EINVAL; 3045 break; 3046 default: 3047 return -EINVAL; 3048 } 3049 3050 return 0; 3051 } 3052 3053 static int get_phy_tunable(struct net_device *dev, void __user *useraddr) 3054 { 3055 struct phy_device *phydev = dev->phydev; 3056 struct ethtool_tunable tuna; 3057 bool phy_drv_tunable; 3058 void *data; 3059 int ret; 3060 3061 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 3062 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) 3063 return -EOPNOTSUPP; 3064 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 3065 return -EFAULT; 3066 ret = ethtool_phy_tunable_valid(&tuna); 3067 if (ret) 3068 return ret; 3069 data = kzalloc(tuna.len, GFP_USER); 3070 if (!data) 3071 return -ENOMEM; 3072 if (phy_drv_tunable) { 3073 mutex_lock(&phydev->lock); 3074 ret = phydev->drv->get_tunable(phydev, &tuna, data); 3075 mutex_unlock(&phydev->lock); 3076 } else { 3077 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); 3078 } 3079 if (ret) 3080 goto out; 3081 useraddr += sizeof(tuna); 3082 ret = -EFAULT; 3083 if (copy_to_user(useraddr, data, tuna.len)) 3084 goto out; 3085 ret = 0; 3086 3087 out: 3088 kfree(data); 3089 return ret; 3090 } 3091 3092 static int set_phy_tunable(struct net_device *dev, void __user *useraddr) 3093 { 3094 struct phy_device *phydev = dev->phydev; 3095 struct ethtool_tunable tuna; 3096 bool phy_drv_tunable; 3097 void *data; 3098 int ret; 3099 3100 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 3101 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) 3102 return -EOPNOTSUPP; 3103 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 3104 return -EFAULT; 3105 ret = ethtool_phy_tunable_valid(&tuna); 3106 if (ret) 3107 return ret; 3108 useraddr += sizeof(tuna); 3109 data = memdup_user(useraddr, tuna.len); 3110 if (IS_ERR(data)) 3111 return PTR_ERR(data); 3112 if (phy_drv_tunable) { 3113 mutex_lock(&phydev->lock); 3114 ret = phydev->drv->set_tunable(phydev, &tuna, data); 3115 mutex_unlock(&phydev->lock); 3116 } else { 3117 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); 3118 } 3119 3120 kfree(data); 3121 return ret; 3122 } 3123 3124 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) 3125 { 3126 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; 3127 int rc; 3128 3129 if (!dev->ethtool_ops->get_fecparam) 3130 return -EOPNOTSUPP; 3131 3132 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); 3133 if (rc) 3134 return rc; 3135 3136 if (WARN_ON_ONCE(fecparam.reserved)) 3137 fecparam.reserved = 0; 3138 3139 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) 3140 return -EFAULT; 3141 return 0; 3142 } 3143 3144 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) 3145 { 3146 struct ethtool_fecparam fecparam; 3147 3148 if (!dev->ethtool_ops->set_fecparam) 3149 return -EOPNOTSUPP; 3150 3151 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) 3152 return -EFAULT; 3153 3154 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) 3155 return -EINVAL; 3156 3157 fecparam.active_fec = 0; 3158 fecparam.reserved = 0; 3159 3160 return dev->ethtool_ops->set_fecparam(dev, &fecparam); 3161 } 3162 3163 /* The main entry point in this file. Called from net/core/dev_ioctl.c */ 3164 3165 static int 3166 __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, 3167 u32 ethcmd, struct ethtool_devlink_compat *devlink_state) 3168 { 3169 struct net_device *dev; 3170 u32 sub_cmd; 3171 int rc; 3172 netdev_features_t old_features; 3173 3174 dev = __dev_get_by_name(net, ifr->ifr_name); 3175 if (!dev) 3176 return -ENODEV; 3177 3178 if (ethcmd == ETHTOOL_PERQUEUE) { 3179 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) 3180 return -EFAULT; 3181 } else { 3182 sub_cmd = ethcmd; 3183 } 3184 /* Allow some commands to be done by anyone */ 3185 switch (sub_cmd) { 3186 case ETHTOOL_GSET: 3187 case ETHTOOL_GDRVINFO: 3188 case ETHTOOL_GMSGLVL: 3189 case ETHTOOL_GLINK: 3190 case ETHTOOL_GCOALESCE: 3191 case ETHTOOL_GRINGPARAM: 3192 case ETHTOOL_GPAUSEPARAM: 3193 case ETHTOOL_GRXCSUM: 3194 case ETHTOOL_GTXCSUM: 3195 case ETHTOOL_GSG: 3196 case ETHTOOL_GSSET_INFO: 3197 case ETHTOOL_GSTRINGS: 3198 case ETHTOOL_GSTATS: 3199 case ETHTOOL_GPHYSTATS: 3200 case ETHTOOL_GTSO: 3201 case ETHTOOL_GPERMADDR: 3202 case ETHTOOL_GUFO: 3203 case ETHTOOL_GGSO: 3204 case ETHTOOL_GGRO: 3205 case ETHTOOL_GFLAGS: 3206 case ETHTOOL_GPFLAGS: 3207 case ETHTOOL_GRXFH: 3208 case ETHTOOL_GRXRINGS: 3209 case ETHTOOL_GRXCLSRLCNT: 3210 case ETHTOOL_GRXCLSRULE: 3211 case ETHTOOL_GRXCLSRLALL: 3212 case ETHTOOL_GRXFHINDIR: 3213 case ETHTOOL_GRSSH: 3214 case ETHTOOL_GFEATURES: 3215 case ETHTOOL_GCHANNELS: 3216 case ETHTOOL_GET_TS_INFO: 3217 case ETHTOOL_GEEE: 3218 case ETHTOOL_GTUNABLE: 3219 case ETHTOOL_PHY_GTUNABLE: 3220 case ETHTOOL_GLINKSETTINGS: 3221 case ETHTOOL_GFECPARAM: 3222 break; 3223 default: 3224 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 3225 return -EPERM; 3226 } 3227 3228 netdev_lock_ops(dev); 3229 if (dev->dev.parent) 3230 pm_runtime_get_sync(dev->dev.parent); 3231 3232 if (!netif_device_present(dev)) { 3233 rc = -ENODEV; 3234 goto out; 3235 } 3236 3237 if (dev->ethtool_ops->begin) { 3238 rc = dev->ethtool_ops->begin(dev); 3239 if (rc < 0) 3240 goto out; 3241 } 3242 old_features = dev->features; 3243 3244 switch (ethcmd) { 3245 case ETHTOOL_GSET: 3246 rc = ethtool_get_settings(dev, useraddr); 3247 break; 3248 case ETHTOOL_SSET: 3249 rc = ethtool_set_settings(dev, useraddr); 3250 break; 3251 case ETHTOOL_GDRVINFO: 3252 rc = ethtool_get_drvinfo(dev, devlink_state); 3253 break; 3254 case ETHTOOL_GREGS: 3255 rc = ethtool_get_regs(dev, useraddr); 3256 break; 3257 case ETHTOOL_GWOL: 3258 rc = ethtool_get_wol(dev, useraddr); 3259 break; 3260 case ETHTOOL_SWOL: 3261 rc = ethtool_set_wol(dev, useraddr); 3262 break; 3263 case ETHTOOL_GMSGLVL: 3264 rc = ethtool_get_value(dev, useraddr, ethcmd, 3265 dev->ethtool_ops->get_msglevel); 3266 break; 3267 case ETHTOOL_SMSGLVL: 3268 rc = ethtool_set_value_void(dev, useraddr, 3269 dev->ethtool_ops->set_msglevel); 3270 if (!rc) 3271 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL); 3272 break; 3273 case ETHTOOL_GEEE: 3274 rc = ethtool_get_eee(dev, useraddr); 3275 break; 3276 case ETHTOOL_SEEE: 3277 rc = ethtool_set_eee(dev, useraddr); 3278 break; 3279 case ETHTOOL_NWAY_RST: 3280 rc = ethtool_nway_reset(dev); 3281 break; 3282 case ETHTOOL_GLINK: 3283 rc = ethtool_get_link(dev, useraddr); 3284 break; 3285 case ETHTOOL_GEEPROM: 3286 rc = ethtool_get_eeprom(dev, useraddr); 3287 break; 3288 case ETHTOOL_SEEPROM: 3289 rc = ethtool_set_eeprom(dev, useraddr); 3290 break; 3291 case ETHTOOL_GCOALESCE: 3292 rc = ethtool_get_coalesce(dev, useraddr); 3293 break; 3294 case ETHTOOL_SCOALESCE: 3295 rc = ethtool_set_coalesce(dev, useraddr); 3296 break; 3297 case ETHTOOL_GRINGPARAM: 3298 rc = ethtool_get_ringparam(dev, useraddr); 3299 break; 3300 case ETHTOOL_SRINGPARAM: 3301 rc = ethtool_set_ringparam(dev, useraddr); 3302 break; 3303 case ETHTOOL_GPAUSEPARAM: 3304 rc = ethtool_get_pauseparam(dev, useraddr); 3305 break; 3306 case ETHTOOL_SPAUSEPARAM: 3307 rc = ethtool_set_pauseparam(dev, useraddr); 3308 break; 3309 case ETHTOOL_TEST: 3310 rc = ethtool_self_test(dev, useraddr); 3311 break; 3312 case ETHTOOL_GSTRINGS: 3313 rc = ethtool_get_strings(dev, useraddr); 3314 break; 3315 case ETHTOOL_PHYS_ID: 3316 rc = ethtool_phys_id(dev, useraddr); 3317 break; 3318 case ETHTOOL_GSTATS: 3319 rc = ethtool_get_stats(dev, useraddr); 3320 break; 3321 case ETHTOOL_GPERMADDR: 3322 rc = ethtool_get_perm_addr(dev, useraddr); 3323 break; 3324 case ETHTOOL_GFLAGS: 3325 rc = ethtool_get_value(dev, useraddr, ethcmd, 3326 __ethtool_get_flags); 3327 break; 3328 case ETHTOOL_SFLAGS: 3329 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); 3330 break; 3331 case ETHTOOL_GPFLAGS: 3332 rc = ethtool_get_value(dev, useraddr, ethcmd, 3333 dev->ethtool_ops->get_priv_flags); 3334 if (!rc) 3335 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL); 3336 break; 3337 case ETHTOOL_SPFLAGS: 3338 rc = ethtool_set_value(dev, useraddr, 3339 dev->ethtool_ops->set_priv_flags); 3340 break; 3341 case ETHTOOL_GRXFH: 3342 case ETHTOOL_GRXRINGS: 3343 case ETHTOOL_GRXCLSRLCNT: 3344 case ETHTOOL_GRXCLSRULE: 3345 case ETHTOOL_GRXCLSRLALL: 3346 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); 3347 break; 3348 case ETHTOOL_SRXFH: 3349 case ETHTOOL_SRXCLSRLDEL: 3350 case ETHTOOL_SRXCLSRLINS: 3351 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); 3352 break; 3353 case ETHTOOL_FLASHDEV: 3354 rc = ethtool_flash_device(dev, devlink_state); 3355 break; 3356 case ETHTOOL_RESET: 3357 rc = ethtool_reset(dev, useraddr); 3358 break; 3359 case ETHTOOL_GSSET_INFO: 3360 rc = ethtool_get_sset_info(dev, useraddr); 3361 break; 3362 case ETHTOOL_GRXFHINDIR: 3363 rc = ethtool_get_rxfh_indir(dev, useraddr); 3364 break; 3365 case ETHTOOL_SRXFHINDIR: 3366 rc = ethtool_set_rxfh_indir(dev, useraddr); 3367 break; 3368 case ETHTOOL_GRSSH: 3369 rc = ethtool_get_rxfh(dev, useraddr); 3370 break; 3371 case ETHTOOL_SRSSH: 3372 rc = ethtool_set_rxfh(dev, useraddr); 3373 break; 3374 case ETHTOOL_GFEATURES: 3375 rc = ethtool_get_features(dev, useraddr); 3376 break; 3377 case ETHTOOL_SFEATURES: 3378 rc = ethtool_set_features(dev, useraddr); 3379 break; 3380 case ETHTOOL_GTXCSUM: 3381 case ETHTOOL_GRXCSUM: 3382 case ETHTOOL_GSG: 3383 case ETHTOOL_GTSO: 3384 case ETHTOOL_GGSO: 3385 case ETHTOOL_GGRO: 3386 rc = ethtool_get_one_feature(dev, useraddr, ethcmd); 3387 break; 3388 case ETHTOOL_STXCSUM: 3389 case ETHTOOL_SRXCSUM: 3390 case ETHTOOL_SSG: 3391 case ETHTOOL_STSO: 3392 case ETHTOOL_SGSO: 3393 case ETHTOOL_SGRO: 3394 rc = ethtool_set_one_feature(dev, useraddr, ethcmd); 3395 break; 3396 case ETHTOOL_GCHANNELS: 3397 rc = ethtool_get_channels(dev, useraddr); 3398 break; 3399 case ETHTOOL_SCHANNELS: 3400 rc = ethtool_set_channels(dev, useraddr); 3401 break; 3402 case ETHTOOL_SET_DUMP: 3403 rc = ethtool_set_dump(dev, useraddr); 3404 break; 3405 case ETHTOOL_GET_DUMP_FLAG: 3406 rc = ethtool_get_dump_flag(dev, useraddr); 3407 break; 3408 case ETHTOOL_GET_DUMP_DATA: 3409 rc = ethtool_get_dump_data(dev, useraddr); 3410 break; 3411 case ETHTOOL_GET_TS_INFO: 3412 rc = ethtool_get_ts_info(dev, useraddr); 3413 break; 3414 case ETHTOOL_GMODULEINFO: 3415 rc = ethtool_get_module_info(dev, useraddr); 3416 break; 3417 case ETHTOOL_GMODULEEEPROM: 3418 rc = ethtool_get_module_eeprom(dev, useraddr); 3419 break; 3420 case ETHTOOL_GTUNABLE: 3421 rc = ethtool_get_tunable(dev, useraddr); 3422 break; 3423 case ETHTOOL_STUNABLE: 3424 rc = ethtool_set_tunable(dev, useraddr); 3425 break; 3426 case ETHTOOL_GPHYSTATS: 3427 rc = ethtool_get_phy_stats(dev, useraddr); 3428 break; 3429 case ETHTOOL_PERQUEUE: 3430 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); 3431 break; 3432 case ETHTOOL_GLINKSETTINGS: 3433 rc = ethtool_get_link_ksettings(dev, useraddr); 3434 break; 3435 case ETHTOOL_SLINKSETTINGS: 3436 rc = ethtool_set_link_ksettings(dev, useraddr); 3437 break; 3438 case ETHTOOL_PHY_GTUNABLE: 3439 rc = get_phy_tunable(dev, useraddr); 3440 break; 3441 case ETHTOOL_PHY_STUNABLE: 3442 rc = set_phy_tunable(dev, useraddr); 3443 break; 3444 case ETHTOOL_GFECPARAM: 3445 rc = ethtool_get_fecparam(dev, useraddr); 3446 break; 3447 case ETHTOOL_SFECPARAM: 3448 rc = ethtool_set_fecparam(dev, useraddr); 3449 break; 3450 default: 3451 rc = -EOPNOTSUPP; 3452 } 3453 3454 if (dev->ethtool_ops->complete) 3455 dev->ethtool_ops->complete(dev); 3456 3457 if (old_features != dev->features) 3458 netdev_features_change(dev); 3459 out: 3460 if (dev->dev.parent) 3461 pm_runtime_put(dev->dev.parent); 3462 netdev_unlock_ops(dev); 3463 3464 return rc; 3465 } 3466 3467 int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) 3468 { 3469 struct ethtool_devlink_compat *state; 3470 u32 ethcmd; 3471 int rc; 3472 3473 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) 3474 return -EFAULT; 3475 3476 state = kzalloc(sizeof(*state), GFP_KERNEL); 3477 if (!state) 3478 return -ENOMEM; 3479 3480 switch (ethcmd) { 3481 case ETHTOOL_FLASHDEV: 3482 if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { 3483 rc = -EFAULT; 3484 goto exit_free; 3485 } 3486 state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; 3487 break; 3488 } 3489 3490 rtnl_lock(); 3491 rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); 3492 rtnl_unlock(); 3493 if (rc) 3494 goto exit_free; 3495 3496 switch (ethcmd) { 3497 case ETHTOOL_FLASHDEV: 3498 if (state->devlink) 3499 rc = devlink_compat_flash_update(state->devlink, 3500 state->efl.data); 3501 break; 3502 case ETHTOOL_GDRVINFO: 3503 if (state->devlink) 3504 devlink_compat_running_version(state->devlink, 3505 state->info.fw_version, 3506 sizeof(state->info.fw_version)); 3507 if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { 3508 rc = -EFAULT; 3509 goto exit_free; 3510 } 3511 break; 3512 } 3513 3514 exit_free: 3515 if (state->devlink) 3516 devlink_put(state->devlink); 3517 kfree(state); 3518 return rc; 3519 } 3520 3521 struct ethtool_rx_flow_key { 3522 struct flow_dissector_key_basic basic; 3523 union { 3524 struct flow_dissector_key_ipv4_addrs ipv4; 3525 struct flow_dissector_key_ipv6_addrs ipv6; 3526 }; 3527 struct flow_dissector_key_ports tp; 3528 struct flow_dissector_key_ip ip; 3529 struct flow_dissector_key_vlan vlan; 3530 struct flow_dissector_key_eth_addrs eth_addrs; 3531 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ 3532 3533 struct ethtool_rx_flow_match { 3534 struct flow_dissector dissector; 3535 struct ethtool_rx_flow_key key; 3536 struct ethtool_rx_flow_key mask; 3537 }; 3538 3539 struct ethtool_rx_flow_rule * 3540 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) 3541 { 3542 const struct ethtool_rx_flow_spec *fs = input->fs; 3543 struct ethtool_rx_flow_match *match; 3544 struct ethtool_rx_flow_rule *flow; 3545 struct flow_action_entry *act; 3546 3547 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + 3548 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); 3549 if (!flow) 3550 return ERR_PTR(-ENOMEM); 3551 3552 /* ethtool_rx supports only one single action per rule. */ 3553 flow->rule = flow_rule_alloc(1); 3554 if (!flow->rule) { 3555 kfree(flow); 3556 return ERR_PTR(-ENOMEM); 3557 } 3558 3559 match = (struct ethtool_rx_flow_match *)flow->priv; 3560 flow->rule->match.dissector = &match->dissector; 3561 flow->rule->match.mask = &match->mask; 3562 flow->rule->match.key = &match->key; 3563 3564 match->mask.basic.n_proto = htons(0xffff); 3565 3566 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3567 case ETHER_FLOW: { 3568 const struct ethhdr *ether_spec, *ether_m_spec; 3569 3570 ether_spec = &fs->h_u.ether_spec; 3571 ether_m_spec = &fs->m_u.ether_spec; 3572 3573 if (!is_zero_ether_addr(ether_m_spec->h_source)) { 3574 ether_addr_copy(match->key.eth_addrs.src, 3575 ether_spec->h_source); 3576 ether_addr_copy(match->mask.eth_addrs.src, 3577 ether_m_spec->h_source); 3578 } 3579 if (!is_zero_ether_addr(ether_m_spec->h_dest)) { 3580 ether_addr_copy(match->key.eth_addrs.dst, 3581 ether_spec->h_dest); 3582 ether_addr_copy(match->mask.eth_addrs.dst, 3583 ether_m_spec->h_dest); 3584 } 3585 if (ether_m_spec->h_proto) { 3586 match->key.basic.n_proto = ether_spec->h_proto; 3587 match->mask.basic.n_proto = ether_m_spec->h_proto; 3588 } 3589 } 3590 break; 3591 case TCP_V4_FLOW: 3592 case UDP_V4_FLOW: { 3593 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; 3594 3595 match->key.basic.n_proto = htons(ETH_P_IP); 3596 3597 v4_spec = &fs->h_u.tcp_ip4_spec; 3598 v4_m_spec = &fs->m_u.tcp_ip4_spec; 3599 3600 if (v4_m_spec->ip4src) { 3601 match->key.ipv4.src = v4_spec->ip4src; 3602 match->mask.ipv4.src = v4_m_spec->ip4src; 3603 } 3604 if (v4_m_spec->ip4dst) { 3605 match->key.ipv4.dst = v4_spec->ip4dst; 3606 match->mask.ipv4.dst = v4_m_spec->ip4dst; 3607 } 3608 if (v4_m_spec->ip4src || 3609 v4_m_spec->ip4dst) { 3610 match->dissector.used_keys |= 3611 BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS); 3612 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = 3613 offsetof(struct ethtool_rx_flow_key, ipv4); 3614 } 3615 if (v4_m_spec->psrc) { 3616 match->key.tp.src = v4_spec->psrc; 3617 match->mask.tp.src = v4_m_spec->psrc; 3618 } 3619 if (v4_m_spec->pdst) { 3620 match->key.tp.dst = v4_spec->pdst; 3621 match->mask.tp.dst = v4_m_spec->pdst; 3622 } 3623 if (v4_m_spec->psrc || 3624 v4_m_spec->pdst) { 3625 match->dissector.used_keys |= 3626 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3627 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3628 offsetof(struct ethtool_rx_flow_key, tp); 3629 } 3630 if (v4_m_spec->tos) { 3631 match->key.ip.tos = v4_spec->tos; 3632 match->mask.ip.tos = v4_m_spec->tos; 3633 match->dissector.used_keys |= 3634 BIT(FLOW_DISSECTOR_KEY_IP); 3635 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3636 offsetof(struct ethtool_rx_flow_key, ip); 3637 } 3638 } 3639 break; 3640 case TCP_V6_FLOW: 3641 case UDP_V6_FLOW: { 3642 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; 3643 3644 match->key.basic.n_proto = htons(ETH_P_IPV6); 3645 3646 v6_spec = &fs->h_u.tcp_ip6_spec; 3647 v6_m_spec = &fs->m_u.tcp_ip6_spec; 3648 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) { 3649 memcpy(&match->key.ipv6.src, v6_spec->ip6src, 3650 sizeof(match->key.ipv6.src)); 3651 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, 3652 sizeof(match->mask.ipv6.src)); 3653 } 3654 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3655 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, 3656 sizeof(match->key.ipv6.dst)); 3657 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, 3658 sizeof(match->mask.ipv6.dst)); 3659 } 3660 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) || 3661 !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3662 match->dissector.used_keys |= 3663 BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS); 3664 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = 3665 offsetof(struct ethtool_rx_flow_key, ipv6); 3666 } 3667 if (v6_m_spec->psrc) { 3668 match->key.tp.src = v6_spec->psrc; 3669 match->mask.tp.src = v6_m_spec->psrc; 3670 } 3671 if (v6_m_spec->pdst) { 3672 match->key.tp.dst = v6_spec->pdst; 3673 match->mask.tp.dst = v6_m_spec->pdst; 3674 } 3675 if (v6_m_spec->psrc || 3676 v6_m_spec->pdst) { 3677 match->dissector.used_keys |= 3678 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3679 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3680 offsetof(struct ethtool_rx_flow_key, tp); 3681 } 3682 if (v6_m_spec->tclass) { 3683 match->key.ip.tos = v6_spec->tclass; 3684 match->mask.ip.tos = v6_m_spec->tclass; 3685 match->dissector.used_keys |= 3686 BIT_ULL(FLOW_DISSECTOR_KEY_IP); 3687 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3688 offsetof(struct ethtool_rx_flow_key, ip); 3689 } 3690 } 3691 break; 3692 default: 3693 ethtool_rx_flow_rule_destroy(flow); 3694 return ERR_PTR(-EINVAL); 3695 } 3696 3697 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3698 case TCP_V4_FLOW: 3699 case TCP_V6_FLOW: 3700 match->key.basic.ip_proto = IPPROTO_TCP; 3701 match->mask.basic.ip_proto = 0xff; 3702 break; 3703 case UDP_V4_FLOW: 3704 case UDP_V6_FLOW: 3705 match->key.basic.ip_proto = IPPROTO_UDP; 3706 match->mask.basic.ip_proto = 0xff; 3707 break; 3708 } 3709 3710 match->dissector.used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_BASIC); 3711 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = 3712 offsetof(struct ethtool_rx_flow_key, basic); 3713 3714 if (fs->flow_type & FLOW_EXT) { 3715 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3716 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3717 3718 if (ext_m_spec->vlan_etype) { 3719 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; 3720 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; 3721 } 3722 3723 if (ext_m_spec->vlan_tci) { 3724 match->key.vlan.vlan_id = 3725 ntohs(ext_h_spec->vlan_tci) & 0x0fff; 3726 match->mask.vlan.vlan_id = 3727 ntohs(ext_m_spec->vlan_tci) & 0x0fff; 3728 3729 match->key.vlan.vlan_dei = 3730 !!(ext_h_spec->vlan_tci & htons(0x1000)); 3731 match->mask.vlan.vlan_dei = 3732 !!(ext_m_spec->vlan_tci & htons(0x1000)); 3733 3734 match->key.vlan.vlan_priority = 3735 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; 3736 match->mask.vlan.vlan_priority = 3737 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; 3738 } 3739 3740 if (ext_m_spec->vlan_etype || 3741 ext_m_spec->vlan_tci) { 3742 match->dissector.used_keys |= 3743 BIT_ULL(FLOW_DISSECTOR_KEY_VLAN); 3744 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = 3745 offsetof(struct ethtool_rx_flow_key, vlan); 3746 } 3747 } 3748 if (fs->flow_type & FLOW_MAC_EXT) { 3749 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3750 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3751 3752 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, 3753 ETH_ALEN); 3754 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, 3755 ETH_ALEN); 3756 3757 match->dissector.used_keys |= 3758 BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS); 3759 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = 3760 offsetof(struct ethtool_rx_flow_key, eth_addrs); 3761 } 3762 3763 act = &flow->rule->action.entries[0]; 3764 switch (fs->ring_cookie) { 3765 case RX_CLS_FLOW_DISC: 3766 act->id = FLOW_ACTION_DROP; 3767 break; 3768 case RX_CLS_FLOW_WAKE: 3769 act->id = FLOW_ACTION_WAKE; 3770 break; 3771 default: 3772 act->id = FLOW_ACTION_QUEUE; 3773 if (fs->flow_type & FLOW_RSS) 3774 act->queue.ctx = input->rss_ctx; 3775 3776 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); 3777 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); 3778 break; 3779 } 3780 3781 return flow; 3782 } 3783 EXPORT_SYMBOL(ethtool_rx_flow_rule_create); 3784 3785 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) 3786 { 3787 kfree(flow->rule); 3788 kfree(flow); 3789 } 3790 EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); 3791