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