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