1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * net/core/ethtool.c - Ethtool ioctl handler 4 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx> 5 * 6 * This file is where we call all the ethtool_ops commands to get 7 * the information ethtool needs. 8 */ 9 10 #include <linux/compat.h> 11 #include <linux/etherdevice.h> 12 #include <linux/module.h> 13 #include <linux/types.h> 14 #include <linux/capability.h> 15 #include <linux/errno.h> 16 #include <linux/ethtool.h> 17 #include <linux/netdevice.h> 18 #include <linux/net_tstamp.h> 19 #include <linux/phy.h> 20 #include <linux/bitops.h> 21 #include <linux/uaccess.h> 22 #include <linux/vmalloc.h> 23 #include <linux/sfp.h> 24 #include <linux/slab.h> 25 #include <linux/rtnetlink.h> 26 #include <linux/sched/signal.h> 27 #include <linux/net.h> 28 #include <linux/pm_runtime.h> 29 #include <linux/utsname.h> 30 #include <net/devlink.h> 31 #include <net/ipv6.h> 32 #include <net/xdp_sock_drv.h> 33 #include <net/flow_offload.h> 34 #include <net/netdev_lock.h> 35 #include <linux/ethtool_netlink.h> 36 #include "common.h" 37 38 /* State held across locks and calls for commands which have devlink fallback */ 39 struct ethtool_devlink_compat { 40 struct devlink *devlink; 41 union { 42 struct ethtool_flash efl; 43 struct ethtool_drvinfo info; 44 }; 45 }; 46 47 static struct devlink *netdev_to_devlink_get(struct net_device *dev) 48 { 49 if (!dev->devlink_port) 50 return NULL; 51 return devlink_try_get(dev->devlink_port->devlink); 52 } 53 54 /* 55 * Some useful ethtool_ops methods that're device independent. 56 * If we find that all drivers want to do the same thing here, 57 * we can turn these into dev_() function calls. 58 */ 59 60 u32 ethtool_op_get_link(struct net_device *dev) 61 { 62 /* Synchronize carrier state with link watch, see also rtnl_getlink() */ 63 __linkwatch_sync_dev(dev); 64 65 return netif_carrier_ok(dev) ? 1 : 0; 66 } 67 EXPORT_SYMBOL(ethtool_op_get_link); 68 69 int ethtool_op_get_ts_info(struct net_device *dev, 70 struct kernel_ethtool_ts_info *info) 71 { 72 info->so_timestamping = 73 SOF_TIMESTAMPING_TX_SOFTWARE | 74 SOF_TIMESTAMPING_RX_SOFTWARE | 75 SOF_TIMESTAMPING_SOFTWARE; 76 info->phc_index = -1; 77 return 0; 78 } 79 EXPORT_SYMBOL(ethtool_op_get_ts_info); 80 81 /* Handlers for each ethtool command */ 82 83 static int ethtool_get_features(struct net_device *dev, void __user *useraddr) 84 { 85 struct ethtool_gfeatures cmd = { 86 .cmd = ETHTOOL_GFEATURES, 87 .size = ETHTOOL_DEV_FEATURE_WORDS, 88 }; 89 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 90 u32 __user *sizeaddr; 91 u32 copy_size; 92 int i; 93 94 /* in case feature bits run out again */ 95 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); 96 97 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 98 features[i].available = (u32)(dev->hw_features >> (32 * i)); 99 features[i].requested = (u32)(dev->wanted_features >> (32 * i)); 100 features[i].active = (u32)(dev->features >> (32 * i)); 101 features[i].never_changed = 102 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); 103 } 104 105 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); 106 if (get_user(copy_size, sizeaddr)) 107 return -EFAULT; 108 109 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) 110 copy_size = ETHTOOL_DEV_FEATURE_WORDS; 111 112 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 113 return -EFAULT; 114 useraddr += sizeof(cmd); 115 if (copy_to_user(useraddr, features, 116 array_size(copy_size, sizeof(*features)))) 117 return -EFAULT; 118 119 return 0; 120 } 121 122 static int ethtool_set_features(struct net_device *dev, void __user *useraddr) 123 { 124 struct ethtool_sfeatures cmd; 125 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 126 netdev_features_t wanted = 0, valid = 0; 127 int i, ret = 0; 128 129 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 130 return -EFAULT; 131 useraddr += sizeof(cmd); 132 133 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) 134 return -EINVAL; 135 136 if (copy_from_user(features, useraddr, sizeof(features))) 137 return -EFAULT; 138 139 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 140 valid |= (netdev_features_t)features[i].valid << (32 * i); 141 wanted |= (netdev_features_t)features[i].requested << (32 * i); 142 } 143 144 if (valid & ~NETIF_F_ETHTOOL_BITS) 145 return -EINVAL; 146 147 if (valid & ~dev->hw_features) { 148 valid &= dev->hw_features; 149 ret |= ETHTOOL_F_UNSUPPORTED; 150 } 151 152 dev->wanted_features &= ~valid; 153 dev->wanted_features |= wanted & valid; 154 __netdev_update_features(dev); 155 156 if ((dev->wanted_features ^ dev->features) & valid) 157 ret |= ETHTOOL_F_WISH; 158 159 return ret; 160 } 161 162 static int __ethtool_get_sset_count(struct net_device *dev, int sset) 163 { 164 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 165 const struct ethtool_ops *ops = dev->ethtool_ops; 166 167 if (sset == ETH_SS_FEATURES) 168 return ARRAY_SIZE(netdev_features_strings); 169 170 if (sset == ETH_SS_RSS_HASH_FUNCS) 171 return ARRAY_SIZE(rss_hash_func_strings); 172 173 if (sset == ETH_SS_TUNABLES) 174 return ARRAY_SIZE(tunable_strings); 175 176 if (sset == ETH_SS_PHY_TUNABLES) 177 return ARRAY_SIZE(phy_tunable_strings); 178 179 if (sset == ETH_SS_PHY_STATS && dev->phydev && 180 !ops->get_ethtool_phy_stats && 181 phy_ops && phy_ops->get_sset_count) 182 return phy_ops->get_sset_count(dev->phydev); 183 184 if (sset == ETH_SS_LINK_MODES) 185 return __ETHTOOL_LINK_MODE_MASK_NBITS; 186 187 if (ops->get_sset_count && ops->get_strings) 188 return ops->get_sset_count(dev, sset); 189 else 190 return -EOPNOTSUPP; 191 } 192 193 static void __ethtool_get_strings(struct net_device *dev, 194 u32 stringset, u8 *data) 195 { 196 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 197 const struct ethtool_ops *ops = dev->ethtool_ops; 198 199 if (stringset == ETH_SS_FEATURES) 200 memcpy(data, netdev_features_strings, 201 sizeof(netdev_features_strings)); 202 else if (stringset == ETH_SS_RSS_HASH_FUNCS) 203 memcpy(data, rss_hash_func_strings, 204 sizeof(rss_hash_func_strings)); 205 else if (stringset == ETH_SS_TUNABLES) 206 memcpy(data, tunable_strings, sizeof(tunable_strings)); 207 else if (stringset == ETH_SS_PHY_TUNABLES) 208 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); 209 else if (stringset == ETH_SS_PHY_STATS && dev->phydev && 210 !ops->get_ethtool_phy_stats && phy_ops && 211 phy_ops->get_strings) 212 phy_ops->get_strings(dev->phydev, data); 213 else if (stringset == ETH_SS_LINK_MODES) 214 memcpy(data, link_mode_names, 215 __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN); 216 else 217 /* ops->get_strings is valid because checked earlier */ 218 ops->get_strings(dev, stringset, data); 219 } 220 221 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) 222 { 223 /* feature masks of legacy discrete ethtool ops */ 224 225 switch (eth_cmd) { 226 case ETHTOOL_GTXCSUM: 227 case ETHTOOL_STXCSUM: 228 return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC | 229 NETIF_F_SCTP_CRC; 230 case ETHTOOL_GRXCSUM: 231 case ETHTOOL_SRXCSUM: 232 return NETIF_F_RXCSUM; 233 case ETHTOOL_GSG: 234 case ETHTOOL_SSG: 235 return NETIF_F_SG | NETIF_F_FRAGLIST; 236 case ETHTOOL_GTSO: 237 case ETHTOOL_STSO: 238 return NETIF_F_ALL_TSO; 239 case ETHTOOL_GGSO: 240 case ETHTOOL_SGSO: 241 return NETIF_F_GSO; 242 case ETHTOOL_GGRO: 243 case ETHTOOL_SGRO: 244 return NETIF_F_GRO; 245 default: 246 BUG(); 247 } 248 } 249 250 static int ethtool_get_one_feature(struct net_device *dev, 251 char __user *useraddr, u32 ethcmd) 252 { 253 netdev_features_t mask = ethtool_get_feature_mask(ethcmd); 254 struct ethtool_value edata = { 255 .cmd = ethcmd, 256 .data = !!(dev->features & mask), 257 }; 258 259 if (copy_to_user(useraddr, &edata, sizeof(edata))) 260 return -EFAULT; 261 return 0; 262 } 263 264 static int ethtool_set_one_feature(struct net_device *dev, 265 void __user *useraddr, u32 ethcmd) 266 { 267 struct ethtool_value edata; 268 netdev_features_t mask; 269 270 if (copy_from_user(&edata, useraddr, sizeof(edata))) 271 return -EFAULT; 272 273 mask = ethtool_get_feature_mask(ethcmd); 274 mask &= dev->hw_features; 275 if (!mask) 276 return -EOPNOTSUPP; 277 278 if (edata.data) 279 dev->wanted_features |= mask; 280 else 281 dev->wanted_features &= ~mask; 282 283 __netdev_update_features(dev); 284 285 return 0; 286 } 287 288 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ 289 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) 290 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ 291 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ 292 NETIF_F_RXHASH) 293 294 static u32 __ethtool_get_flags(struct net_device *dev) 295 { 296 u32 flags = 0; 297 298 if (dev->features & NETIF_F_LRO) 299 flags |= ETH_FLAG_LRO; 300 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 301 flags |= ETH_FLAG_RXVLAN; 302 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) 303 flags |= ETH_FLAG_TXVLAN; 304 if (dev->features & NETIF_F_NTUPLE) 305 flags |= ETH_FLAG_NTUPLE; 306 if (dev->features & NETIF_F_RXHASH) 307 flags |= ETH_FLAG_RXHASH; 308 309 return flags; 310 } 311 312 static int __ethtool_set_flags(struct net_device *dev, u32 data) 313 { 314 netdev_features_t features = 0, changed; 315 316 if (data & ~ETH_ALL_FLAGS) 317 return -EINVAL; 318 319 if (data & ETH_FLAG_LRO) 320 features |= NETIF_F_LRO; 321 if (data & ETH_FLAG_RXVLAN) 322 features |= NETIF_F_HW_VLAN_CTAG_RX; 323 if (data & ETH_FLAG_TXVLAN) 324 features |= NETIF_F_HW_VLAN_CTAG_TX; 325 if (data & ETH_FLAG_NTUPLE) 326 features |= NETIF_F_NTUPLE; 327 if (data & ETH_FLAG_RXHASH) 328 features |= NETIF_F_RXHASH; 329 330 /* allow changing only bits set in hw_features */ 331 changed = (features ^ dev->features) & ETH_ALL_FEATURES; 332 if (changed & ~dev->hw_features) 333 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; 334 335 dev->wanted_features = 336 (dev->wanted_features & ~changed) | (features & changed); 337 338 __netdev_update_features(dev); 339 340 return 0; 341 } 342 343 /* Given two link masks, AND them together and save the result in dst. */ 344 void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, 345 struct ethtool_link_ksettings *src) 346 { 347 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); 348 unsigned int idx = 0; 349 350 for (; idx < size; idx++) { 351 dst->link_modes.supported[idx] &= 352 src->link_modes.supported[idx]; 353 dst->link_modes.advertising[idx] &= 354 src->link_modes.advertising[idx]; 355 } 356 } 357 EXPORT_SYMBOL(ethtool_intersect_link_masks); 358 359 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, 360 u32 legacy_u32) 361 { 362 linkmode_zero(dst); 363 dst[0] = legacy_u32; 364 } 365 EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); 366 367 /* return false if src had higher bits set. lower bits always updated. */ 368 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, 369 const unsigned long *src) 370 { 371 *legacy_u32 = src[0]; 372 return find_next_bit(src, __ETHTOOL_LINK_MODE_MASK_NBITS, 32) == 373 __ETHTOOL_LINK_MODE_MASK_NBITS; 374 } 375 EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); 376 377 /* return false if ksettings link modes had higher bits 378 * set. legacy_settings always updated (best effort) 379 */ 380 static bool 381 convert_link_ksettings_to_legacy_settings( 382 struct ethtool_cmd *legacy_settings, 383 const struct ethtool_link_ksettings *link_ksettings) 384 { 385 bool retval = true; 386 387 memset(legacy_settings, 0, sizeof(*legacy_settings)); 388 /* this also clears the deprecated fields in legacy structure: 389 * __u8 transceiver; 390 * __u32 maxtxpkt; 391 * __u32 maxrxpkt; 392 */ 393 394 retval &= ethtool_convert_link_mode_to_legacy_u32( 395 &legacy_settings->supported, 396 link_ksettings->link_modes.supported); 397 retval &= ethtool_convert_link_mode_to_legacy_u32( 398 &legacy_settings->advertising, 399 link_ksettings->link_modes.advertising); 400 retval &= ethtool_convert_link_mode_to_legacy_u32( 401 &legacy_settings->lp_advertising, 402 link_ksettings->link_modes.lp_advertising); 403 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); 404 legacy_settings->duplex 405 = link_ksettings->base.duplex; 406 legacy_settings->port 407 = link_ksettings->base.port; 408 legacy_settings->phy_address 409 = link_ksettings->base.phy_address; 410 legacy_settings->autoneg 411 = link_ksettings->base.autoneg; 412 legacy_settings->mdio_support 413 = link_ksettings->base.mdio_support; 414 legacy_settings->eth_tp_mdix 415 = link_ksettings->base.eth_tp_mdix; 416 legacy_settings->eth_tp_mdix_ctrl 417 = link_ksettings->base.eth_tp_mdix_ctrl; 418 legacy_settings->transceiver 419 = link_ksettings->base.transceiver; 420 return retval; 421 } 422 423 /* number of 32-bit words to store the user's link mode bitmaps */ 424 #define __ETHTOOL_LINK_MODE_MASK_NU32 \ 425 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) 426 427 /* layout of the struct passed from/to userland */ 428 struct ethtool_link_usettings { 429 struct ethtool_link_settings base; 430 struct { 431 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; 432 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 433 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 434 } link_modes; 435 }; 436 437 /* Internal kernel helper to query a device ethtool_link_settings. */ 438 int __ethtool_get_link_ksettings(struct net_device *dev, 439 struct ethtool_link_ksettings *link_ksettings) 440 { 441 ASSERT_RTNL(); 442 443 if (!dev->ethtool_ops->get_link_ksettings) 444 return -EOPNOTSUPP; 445 446 if (!netif_device_present(dev)) 447 return -ENODEV; 448 449 memset(link_ksettings, 0, sizeof(*link_ksettings)); 450 return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings); 451 } 452 EXPORT_SYMBOL(__ethtool_get_link_ksettings); 453 454 /* convert ethtool_link_usettings in user space to a kernel internal 455 * ethtool_link_ksettings. return 0 on success, errno on error. 456 */ 457 static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, 458 const void __user *from) 459 { 460 struct ethtool_link_usettings link_usettings; 461 462 if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) 463 return -EFAULT; 464 465 memcpy(&to->base, &link_usettings.base, sizeof(to->base)); 466 bitmap_from_arr32(to->link_modes.supported, 467 link_usettings.link_modes.supported, 468 __ETHTOOL_LINK_MODE_MASK_NBITS); 469 bitmap_from_arr32(to->link_modes.advertising, 470 link_usettings.link_modes.advertising, 471 __ETHTOOL_LINK_MODE_MASK_NBITS); 472 bitmap_from_arr32(to->link_modes.lp_advertising, 473 link_usettings.link_modes.lp_advertising, 474 __ETHTOOL_LINK_MODE_MASK_NBITS); 475 476 return 0; 477 } 478 479 /* Check if the user is trying to change anything besides speed/duplex */ 480 bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd) 481 { 482 struct ethtool_link_settings base2 = {}; 483 484 base2.speed = cmd->base.speed; 485 base2.port = PORT_OTHER; 486 base2.duplex = cmd->base.duplex; 487 base2.cmd = cmd->base.cmd; 488 base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords; 489 490 return !memcmp(&base2, &cmd->base, sizeof(base2)) && 491 bitmap_empty(cmd->link_modes.supported, 492 __ETHTOOL_LINK_MODE_MASK_NBITS) && 493 bitmap_empty(cmd->link_modes.lp_advertising, 494 __ETHTOOL_LINK_MODE_MASK_NBITS); 495 } 496 497 /* convert a kernel internal ethtool_link_ksettings to 498 * ethtool_link_usettings in user space. return 0 on success, errno on 499 * error. 500 */ 501 static int 502 store_link_ksettings_for_user(void __user *to, 503 const struct ethtool_link_ksettings *from) 504 { 505 struct ethtool_link_usettings link_usettings; 506 507 memcpy(&link_usettings, from, sizeof(link_usettings)); 508 bitmap_to_arr32(link_usettings.link_modes.supported, 509 from->link_modes.supported, 510 __ETHTOOL_LINK_MODE_MASK_NBITS); 511 bitmap_to_arr32(link_usettings.link_modes.advertising, 512 from->link_modes.advertising, 513 __ETHTOOL_LINK_MODE_MASK_NBITS); 514 bitmap_to_arr32(link_usettings.link_modes.lp_advertising, 515 from->link_modes.lp_advertising, 516 __ETHTOOL_LINK_MODE_MASK_NBITS); 517 518 if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) 519 return -EFAULT; 520 521 return 0; 522 } 523 524 /* Query device for its ethtool_link_settings. */ 525 static int ethtool_get_link_ksettings(struct net_device *dev, 526 void __user *useraddr) 527 { 528 int err = 0; 529 struct ethtool_link_ksettings link_ksettings; 530 531 ASSERT_RTNL(); 532 if (!dev->ethtool_ops->get_link_ksettings) 533 return -EOPNOTSUPP; 534 535 /* handle bitmap nbits handshake */ 536 if (copy_from_user(&link_ksettings.base, useraddr, 537 sizeof(link_ksettings.base))) 538 return -EFAULT; 539 540 if (__ETHTOOL_LINK_MODE_MASK_NU32 541 != link_ksettings.base.link_mode_masks_nwords) { 542 /* wrong link mode nbits requested */ 543 memset(&link_ksettings, 0, sizeof(link_ksettings)); 544 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 545 /* send back number of words required as negative val */ 546 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, 547 "need too many bits for link modes!"); 548 link_ksettings.base.link_mode_masks_nwords 549 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); 550 551 /* copy the base fields back to user, not the link 552 * mode bitmaps 553 */ 554 if (copy_to_user(useraddr, &link_ksettings.base, 555 sizeof(link_ksettings.base))) 556 return -EFAULT; 557 558 return 0; 559 } 560 561 /* handshake successful: user/kernel agree on 562 * link_mode_masks_nwords 563 */ 564 565 memset(&link_ksettings, 0, sizeof(link_ksettings)); 566 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 567 if (err < 0) 568 return err; 569 570 /* make sure we tell the right values to user */ 571 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 572 link_ksettings.base.link_mode_masks_nwords 573 = __ETHTOOL_LINK_MODE_MASK_NU32; 574 link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED; 575 link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED; 576 link_ksettings.base.rate_matching = RATE_MATCH_NONE; 577 578 return store_link_ksettings_for_user(useraddr, &link_ksettings); 579 } 580 581 /* Update device ethtool_link_settings. */ 582 static int ethtool_set_link_ksettings(struct net_device *dev, 583 void __user *useraddr) 584 { 585 struct ethtool_link_ksettings link_ksettings = {}; 586 int err; 587 588 ASSERT_RTNL(); 589 590 if (!dev->ethtool_ops->set_link_ksettings) 591 return -EOPNOTSUPP; 592 593 /* make sure nbits field has expected value */ 594 if (copy_from_user(&link_ksettings.base, useraddr, 595 sizeof(link_ksettings.base))) 596 return -EFAULT; 597 598 if (__ETHTOOL_LINK_MODE_MASK_NU32 599 != link_ksettings.base.link_mode_masks_nwords) 600 return -EINVAL; 601 602 /* copy the whole structure, now that we know it has expected 603 * format 604 */ 605 err = load_link_ksettings_from_user(&link_ksettings, useraddr); 606 if (err) 607 return err; 608 609 /* re-check nwords field, just in case */ 610 if (__ETHTOOL_LINK_MODE_MASK_NU32 611 != link_ksettings.base.link_mode_masks_nwords) 612 return -EINVAL; 613 614 if (link_ksettings.base.master_slave_cfg || 615 link_ksettings.base.master_slave_state) 616 return -EINVAL; 617 618 err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 619 if (err >= 0) { 620 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF); 621 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF); 622 } 623 return err; 624 } 625 626 int ethtool_virtdev_set_link_ksettings(struct net_device *dev, 627 const struct ethtool_link_ksettings *cmd, 628 u32 *dev_speed, u8 *dev_duplex) 629 { 630 u32 speed; 631 u8 duplex; 632 633 speed = cmd->base.speed; 634 duplex = cmd->base.duplex; 635 /* don't allow custom speed and duplex */ 636 if (!ethtool_validate_speed(speed) || 637 !ethtool_validate_duplex(duplex) || 638 !ethtool_virtdev_validate_cmd(cmd)) 639 return -EINVAL; 640 *dev_speed = speed; 641 *dev_duplex = duplex; 642 643 return 0; 644 } 645 EXPORT_SYMBOL(ethtool_virtdev_set_link_ksettings); 646 647 /* Query device for its ethtool_cmd settings. 648 * 649 * Backward compatibility note: for compatibility with legacy ethtool, this is 650 * now implemented via get_link_ksettings. When driver reports higher link mode 651 * bits, a kernel warning is logged once (with name of 1st driver/device) to 652 * recommend user to upgrade ethtool, but the command is successful (only the 653 * lower link mode bits reported back to user). Deprecated fields from 654 * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero. 655 */ 656 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) 657 { 658 struct ethtool_link_ksettings link_ksettings; 659 struct ethtool_cmd cmd; 660 int err; 661 662 ASSERT_RTNL(); 663 if (!dev->ethtool_ops->get_link_ksettings) 664 return -EOPNOTSUPP; 665 666 if (dev->ethtool->module_fw_flash_in_progress) 667 return -EBUSY; 668 669 memset(&link_ksettings, 0, sizeof(link_ksettings)); 670 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 671 if (err < 0) 672 return err; 673 convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings); 674 675 /* send a sensible cmd tag back to user */ 676 cmd.cmd = ETHTOOL_GSET; 677 678 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 679 return -EFAULT; 680 681 return 0; 682 } 683 684 /* Update device link settings with given ethtool_cmd. 685 * 686 * Backward compatibility note: for compatibility with legacy ethtool, this is 687 * now always implemented via set_link_settings. When user's request updates 688 * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel 689 * warning is logged once (with name of 1st driver/device) to recommend user to 690 * upgrade ethtool, and the request is rejected. 691 */ 692 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) 693 { 694 struct ethtool_link_ksettings link_ksettings; 695 struct ethtool_cmd cmd; 696 int ret; 697 698 ASSERT_RTNL(); 699 700 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 701 return -EFAULT; 702 if (!dev->ethtool_ops->set_link_ksettings) 703 return -EOPNOTSUPP; 704 705 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd)) 706 return -EINVAL; 707 link_ksettings.base.link_mode_masks_nwords = 708 __ETHTOOL_LINK_MODE_MASK_NU32; 709 ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 710 if (ret >= 0) { 711 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF); 712 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF); 713 } 714 return ret; 715 } 716 717 static int 718 ethtool_get_drvinfo(struct net_device *dev, struct ethtool_devlink_compat *rsp) 719 { 720 const struct ethtool_ops *ops = dev->ethtool_ops; 721 struct device *parent = dev->dev.parent; 722 723 rsp->info.cmd = ETHTOOL_GDRVINFO; 724 strscpy(rsp->info.version, init_uts_ns.name.release, 725 sizeof(rsp->info.version)); 726 if (ops->get_drvinfo) { 727 ops->get_drvinfo(dev, &rsp->info); 728 if (!rsp->info.bus_info[0] && parent) 729 strscpy(rsp->info.bus_info, dev_name(parent), 730 sizeof(rsp->info.bus_info)); 731 if (!rsp->info.driver[0] && parent && parent->driver) 732 strscpy(rsp->info.driver, parent->driver->name, 733 sizeof(rsp->info.driver)); 734 } else if (parent && parent->driver) { 735 strscpy(rsp->info.bus_info, dev_name(parent), 736 sizeof(rsp->info.bus_info)); 737 strscpy(rsp->info.driver, parent->driver->name, 738 sizeof(rsp->info.driver)); 739 } else if (dev->rtnl_link_ops) { 740 strscpy(rsp->info.driver, dev->rtnl_link_ops->kind, 741 sizeof(rsp->info.driver)); 742 } else { 743 return -EOPNOTSUPP; 744 } 745 746 /* 747 * this method of obtaining string set info is deprecated; 748 * Use ETHTOOL_GSSET_INFO instead. 749 */ 750 if (ops->get_sset_count) { 751 int rc; 752 753 rc = ops->get_sset_count(dev, ETH_SS_TEST); 754 if (rc >= 0) 755 rsp->info.testinfo_len = rc; 756 rc = ops->get_sset_count(dev, ETH_SS_STATS); 757 if (rc >= 0) 758 rsp->info.n_stats = rc; 759 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); 760 if (rc >= 0) 761 rsp->info.n_priv_flags = rc; 762 } 763 if (ops->get_regs_len) { 764 int ret = ops->get_regs_len(dev); 765 766 if (ret > 0) 767 rsp->info.regdump_len = ret; 768 } 769 770 if (ops->get_eeprom_len) 771 rsp->info.eedump_len = ops->get_eeprom_len(dev); 772 773 if (!rsp->info.fw_version[0]) 774 rsp->devlink = netdev_to_devlink_get(dev); 775 776 return 0; 777 } 778 779 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, 780 void __user *useraddr) 781 { 782 struct ethtool_sset_info info; 783 u64 sset_mask; 784 int i, idx = 0, n_bits = 0, ret, rc; 785 u32 *info_buf = NULL; 786 787 if (copy_from_user(&info, useraddr, sizeof(info))) 788 return -EFAULT; 789 790 /* store copy of mask, because we zero struct later on */ 791 sset_mask = info.sset_mask; 792 if (!sset_mask) 793 return 0; 794 795 /* calculate size of return buffer */ 796 n_bits = hweight64(sset_mask); 797 798 memset(&info, 0, sizeof(info)); 799 info.cmd = ETHTOOL_GSSET_INFO; 800 801 info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER); 802 if (!info_buf) 803 return -ENOMEM; 804 805 /* 806 * fill return buffer based on input bitmask and successful 807 * get_sset_count return 808 */ 809 for (i = 0; i < 64; i++) { 810 if (!(sset_mask & (1ULL << i))) 811 continue; 812 813 rc = __ethtool_get_sset_count(dev, i); 814 if (rc >= 0) { 815 info.sset_mask |= (1ULL << i); 816 info_buf[idx++] = rc; 817 } 818 } 819 820 ret = -EFAULT; 821 if (copy_to_user(useraddr, &info, sizeof(info))) 822 goto out; 823 824 useraddr += offsetof(struct ethtool_sset_info, data); 825 if (copy_to_user(useraddr, info_buf, array_size(idx, sizeof(u32)))) 826 goto out; 827 828 ret = 0; 829 830 out: 831 kfree(info_buf); 832 return ret; 833 } 834 835 static noinline_for_stack int 836 ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc, 837 const struct compat_ethtool_rxnfc __user *useraddr, 838 size_t size) 839 { 840 struct compat_ethtool_rxnfc crxnfc = {}; 841 842 /* We expect there to be holes between fs.m_ext and 843 * fs.ring_cookie and at the end of fs, but nowhere else. 844 * On non-x86, no conversion should be needed. 845 */ 846 BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) && 847 sizeof(struct compat_ethtool_rxnfc) != 848 sizeof(struct ethtool_rxnfc)); 849 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) + 850 sizeof(useraddr->fs.m_ext) != 851 offsetof(struct ethtool_rxnfc, fs.m_ext) + 852 sizeof(rxnfc->fs.m_ext)); 853 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) - 854 offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) != 855 offsetof(struct ethtool_rxnfc, fs.location) - 856 offsetof(struct ethtool_rxnfc, fs.ring_cookie)); 857 858 if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc)))) 859 return -EFAULT; 860 861 *rxnfc = (struct ethtool_rxnfc) { 862 .cmd = crxnfc.cmd, 863 .flow_type = crxnfc.flow_type, 864 .data = crxnfc.data, 865 .fs = { 866 .flow_type = crxnfc.fs.flow_type, 867 .h_u = crxnfc.fs.h_u, 868 .h_ext = crxnfc.fs.h_ext, 869 .m_u = crxnfc.fs.m_u, 870 .m_ext = crxnfc.fs.m_ext, 871 .ring_cookie = crxnfc.fs.ring_cookie, 872 .location = crxnfc.fs.location, 873 }, 874 .rule_cnt = crxnfc.rule_cnt, 875 }; 876 877 return 0; 878 } 879 880 static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc, 881 const void __user *useraddr, 882 size_t size) 883 { 884 if (compat_need_64bit_alignment_fixup()) 885 return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size); 886 887 if (copy_from_user(rxnfc, useraddr, size)) 888 return -EFAULT; 889 890 return 0; 891 } 892 893 static int ethtool_rxnfc_copy_to_compat(void __user *useraddr, 894 const struct ethtool_rxnfc *rxnfc, 895 size_t size, const u32 *rule_buf) 896 { 897 struct compat_ethtool_rxnfc crxnfc; 898 899 memset(&crxnfc, 0, sizeof(crxnfc)); 900 crxnfc = (struct compat_ethtool_rxnfc) { 901 .cmd = rxnfc->cmd, 902 .flow_type = rxnfc->flow_type, 903 .data = rxnfc->data, 904 .fs = { 905 .flow_type = rxnfc->fs.flow_type, 906 .h_u = rxnfc->fs.h_u, 907 .h_ext = rxnfc->fs.h_ext, 908 .m_u = rxnfc->fs.m_u, 909 .m_ext = rxnfc->fs.m_ext, 910 .ring_cookie = rxnfc->fs.ring_cookie, 911 .location = rxnfc->fs.location, 912 }, 913 .rule_cnt = rxnfc->rule_cnt, 914 }; 915 916 if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc)))) 917 return -EFAULT; 918 919 return 0; 920 } 921 922 static int ethtool_rxnfc_copy_struct(u32 cmd, struct ethtool_rxnfc *info, 923 size_t *info_size, void __user *useraddr) 924 { 925 /* struct ethtool_rxnfc was originally defined for 926 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 927 * members. User-space might still be using that 928 * definition. 929 */ 930 if (cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) 931 *info_size = (offsetof(struct ethtool_rxnfc, data) + 932 sizeof(info->data)); 933 934 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) 935 return -EFAULT; 936 937 if ((cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) && info->flow_type & FLOW_RSS) { 938 *info_size = sizeof(*info); 939 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) 940 return -EFAULT; 941 /* Since malicious users may modify the original data, 942 * we need to check whether FLOW_RSS is still requested. 943 */ 944 if (!(info->flow_type & FLOW_RSS)) 945 return -EINVAL; 946 } 947 948 if (info->cmd != cmd) 949 return -EINVAL; 950 951 return 0; 952 } 953 954 static int ethtool_rxnfc_copy_to_user(void __user *useraddr, 955 const struct ethtool_rxnfc *rxnfc, 956 size_t size, const u32 *rule_buf) 957 { 958 int ret; 959 960 if (compat_need_64bit_alignment_fixup()) { 961 ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size, 962 rule_buf); 963 useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs); 964 } else { 965 ret = copy_to_user(useraddr, rxnfc, size); 966 useraddr += offsetof(struct ethtool_rxnfc, rule_locs); 967 } 968 969 if (ret) 970 return -EFAULT; 971 972 if (rule_buf) { 973 if (copy_to_user(useraddr, rule_buf, 974 rxnfc->rule_cnt * sizeof(u32))) 975 return -EFAULT; 976 } 977 978 return 0; 979 } 980 981 static bool flow_type_hashable(u32 flow_type) 982 { 983 switch (flow_type) { 984 case ETHER_FLOW: 985 case TCP_V4_FLOW: 986 case UDP_V4_FLOW: 987 case SCTP_V4_FLOW: 988 case AH_ESP_V4_FLOW: 989 case TCP_V6_FLOW: 990 case UDP_V6_FLOW: 991 case SCTP_V6_FLOW: 992 case AH_ESP_V6_FLOW: 993 case AH_V4_FLOW: 994 case ESP_V4_FLOW: 995 case AH_V6_FLOW: 996 case ESP_V6_FLOW: 997 case IPV4_FLOW: 998 case IPV6_FLOW: 999 case GTPU_V4_FLOW: 1000 case GTPU_V6_FLOW: 1001 case GTPC_V4_FLOW: 1002 case GTPC_V6_FLOW: 1003 case GTPC_TEID_V4_FLOW: 1004 case GTPC_TEID_V6_FLOW: 1005 case GTPU_EH_V4_FLOW: 1006 case GTPU_EH_V6_FLOW: 1007 case GTPU_UL_V4_FLOW: 1008 case GTPU_UL_V6_FLOW: 1009 case GTPU_DL_V4_FLOW: 1010 case GTPU_DL_V6_FLOW: 1011 return true; 1012 } 1013 1014 return false; 1015 } 1016 1017 static bool flow_type_v6(u32 flow_type) 1018 { 1019 switch (flow_type) { 1020 case TCP_V6_FLOW: 1021 case UDP_V6_FLOW: 1022 case SCTP_V6_FLOW: 1023 case AH_ESP_V6_FLOW: 1024 case AH_V6_FLOW: 1025 case ESP_V6_FLOW: 1026 case IPV6_FLOW: 1027 case GTPU_V6_FLOW: 1028 case GTPC_V6_FLOW: 1029 case GTPC_TEID_V6_FLOW: 1030 case GTPU_EH_V6_FLOW: 1031 case GTPU_UL_V6_FLOW: 1032 case GTPU_DL_V6_FLOW: 1033 return true; 1034 } 1035 1036 return false; 1037 } 1038 1039 /* When adding a new type, update the assert and, if it's hashable, add it to 1040 * the flow_type_hashable switch case. 1041 */ 1042 static_assert(GTPU_DL_V6_FLOW + 1 == __FLOW_TYPE_COUNT); 1043 1044 static int ethtool_check_xfrm_rxfh(u32 input_xfrm, u64 rxfh) 1045 { 1046 /* Sanity check: if symmetric-xor/symmetric-or-xor is set, then: 1047 * 1 - no other fields besides IP src/dst and/or L4 src/dst are set 1048 * 2 - If src is set, dst must also be set 1049 */ 1050 if ((input_xfrm != RXH_XFRM_NO_CHANGE && 1051 input_xfrm & (RXH_XFRM_SYM_XOR | RXH_XFRM_SYM_OR_XOR)) && 1052 !ethtool_rxfh_config_is_sym(rxfh)) 1053 return -EINVAL; 1054 1055 return 0; 1056 } 1057 1058 static int ethtool_check_flow_types(struct net_device *dev, u32 input_xfrm) 1059 { 1060 const struct ethtool_ops *ops = dev->ethtool_ops; 1061 int err; 1062 u32 i; 1063 1064 if (!input_xfrm || input_xfrm == RXH_XFRM_NO_CHANGE) 1065 return 0; 1066 1067 for (i = 0; i < __FLOW_TYPE_COUNT; i++) { 1068 struct ethtool_rxfh_fields fields = { 1069 .flow_type = i, 1070 }; 1071 1072 if (!flow_type_hashable(i)) 1073 continue; 1074 1075 if (ops->get_rxfh_fields(dev, &fields)) 1076 continue; 1077 1078 err = ethtool_check_xfrm_rxfh(input_xfrm, fields.data); 1079 if (err) 1080 return err; 1081 } 1082 1083 return 0; 1084 } 1085 1086 static noinline_for_stack int 1087 ethtool_set_rxfh_fields(struct net_device *dev, u32 cmd, void __user *useraddr) 1088 { 1089 const struct ethtool_ops *ops = dev->ethtool_ops; 1090 struct ethtool_rxfh_fields fields = {}; 1091 struct ethtool_rxnfc info; 1092 size_t info_size = sizeof(info); 1093 int rc; 1094 1095 if (!ops->set_rxfh_fields) 1096 return -EOPNOTSUPP; 1097 1098 rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1099 if (rc) 1100 return rc; 1101 1102 if (info.data & RXH_IP6_FL && !flow_type_v6(info.flow_type)) 1103 return -EINVAL; 1104 1105 if (info.flow_type & FLOW_RSS && info.rss_context && 1106 !ops->rxfh_per_ctx_fields) 1107 return -EINVAL; 1108 1109 mutex_lock(&dev->ethtool->rss_lock); 1110 if (ops->get_rxfh) { 1111 struct ethtool_rxfh_param rxfh = {}; 1112 1113 rc = ops->get_rxfh(dev, &rxfh); 1114 if (rc) 1115 goto exit_unlock; 1116 1117 rc = ethtool_check_xfrm_rxfh(rxfh.input_xfrm, info.data); 1118 if (rc) 1119 goto exit_unlock; 1120 } 1121 1122 fields.data = info.data; 1123 fields.flow_type = info.flow_type & ~FLOW_RSS; 1124 if (info.flow_type & FLOW_RSS) 1125 fields.rss_context = info.rss_context; 1126 1127 rc = ops->set_rxfh_fields(dev, &fields, NULL); 1128 exit_unlock: 1129 mutex_unlock(&dev->ethtool->rss_lock); 1130 if (rc) 1131 return rc; 1132 1133 ethtool_rss_notify(dev, ETHTOOL_MSG_RSS_NTF, fields.rss_context); 1134 return 0; 1135 } 1136 1137 static noinline_for_stack int 1138 ethtool_get_rxfh_fields(struct net_device *dev, u32 cmd, void __user *useraddr) 1139 { 1140 struct ethtool_rxnfc info; 1141 size_t info_size = sizeof(info); 1142 const struct ethtool_ops *ops = dev->ethtool_ops; 1143 struct ethtool_rxfh_fields fields = {}; 1144 int ret; 1145 1146 if (!ops->get_rxfh_fields) 1147 return -EOPNOTSUPP; 1148 1149 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1150 if (ret) 1151 return ret; 1152 1153 if (info.flow_type & FLOW_RSS && info.rss_context && 1154 !ops->rxfh_per_ctx_fields) 1155 return -EINVAL; 1156 1157 fields.flow_type = info.flow_type & ~FLOW_RSS; 1158 if (info.flow_type & FLOW_RSS) 1159 fields.rss_context = info.rss_context; 1160 1161 mutex_lock(&dev->ethtool->rss_lock); 1162 ret = ops->get_rxfh_fields(dev, &fields); 1163 mutex_unlock(&dev->ethtool->rss_lock); 1164 if (ret < 0) 1165 return ret; 1166 1167 info.data = fields.data; 1168 1169 return ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL); 1170 } 1171 1172 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, 1173 u32 cmd, void __user *useraddr) 1174 { 1175 const struct ethtool_ops *ops = dev->ethtool_ops; 1176 struct ethtool_rxnfc info; 1177 size_t info_size = sizeof(info); 1178 int rc; 1179 1180 if (!ops->set_rxnfc) 1181 return -EOPNOTSUPP; 1182 1183 rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1184 if (rc) 1185 return rc; 1186 1187 if (cmd == ETHTOOL_SRXCLSRLINS && info.fs.flow_type & FLOW_RSS) { 1188 /* Nonzero ring with RSS only makes sense 1189 * if NIC adds them together 1190 */ 1191 if (!ops->cap_rss_rxnfc_adds && 1192 ethtool_get_flow_spec_ring(info.fs.ring_cookie)) 1193 return -EINVAL; 1194 1195 if (info.rss_context && 1196 !xa_load(&dev->ethtool->rss_ctx, info.rss_context)) 1197 return -EINVAL; 1198 } 1199 1200 rc = ops->set_rxnfc(dev, &info); 1201 if (rc) 1202 return rc; 1203 1204 if (cmd == ETHTOOL_SRXCLSRLINS && 1205 ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL)) 1206 return -EFAULT; 1207 1208 return 0; 1209 } 1210 1211 static noinline_for_stack int ethtool_get_rxrings(struct net_device *dev, 1212 u32 cmd, 1213 void __user *useraddr) 1214 { 1215 struct ethtool_rxnfc info; 1216 size_t info_size; 1217 int ret; 1218 1219 info_size = sizeof(info); 1220 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1221 if (ret) 1222 return ret; 1223 1224 ret = ethtool_get_rx_ring_count(dev); 1225 if (ret < 0) 1226 return ret; 1227 1228 info.data = ret; 1229 1230 return ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL); 1231 } 1232 1233 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, 1234 u32 cmd, void __user *useraddr) 1235 { 1236 const struct ethtool_ops *ops = dev->ethtool_ops; 1237 struct ethtool_rxnfc info; 1238 void *rule_buf = NULL; 1239 size_t info_size; 1240 int ret; 1241 1242 if (!ops->get_rxnfc) 1243 return -EOPNOTSUPP; 1244 1245 info_size = sizeof(info); 1246 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1247 if (ret) 1248 return ret; 1249 1250 if (info.cmd == ETHTOOL_GRXCLSRLALL) { 1251 if (info.rule_cnt > 0) { 1252 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) 1253 rule_buf = kcalloc(info.rule_cnt, sizeof(u32), 1254 GFP_USER); 1255 if (!rule_buf) 1256 return -ENOMEM; 1257 } 1258 } 1259 1260 ret = ops->get_rxnfc(dev, &info, rule_buf); 1261 if (ret < 0) 1262 goto err_out; 1263 1264 ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf); 1265 err_out: 1266 kfree(rule_buf); 1267 1268 return ret; 1269 } 1270 1271 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, 1272 int num_rx_rings, 1273 u32 size) 1274 { 1275 int i; 1276 1277 if (copy_from_user(indir, useraddr, array_size(size, sizeof(indir[0])))) 1278 return -EFAULT; 1279 1280 /* Validate ring indices */ 1281 for (i = 0; i < size; i++) 1282 if (indir[i] >= num_rx_rings) 1283 return -EINVAL; 1284 1285 return 0; 1286 } 1287 1288 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; 1289 1290 void netdev_rss_key_fill(void *buffer, size_t len) 1291 { 1292 BUG_ON(len > sizeof(netdev_rss_key)); 1293 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); 1294 memcpy(buffer, netdev_rss_key, len); 1295 } 1296 EXPORT_SYMBOL(netdev_rss_key_fill); 1297 1298 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, 1299 void __user *useraddr) 1300 { 1301 struct ethtool_rxfh_param rxfh = {}; 1302 u32 user_size; 1303 int ret; 1304 1305 if (!dev->ethtool_ops->get_rxfh_indir_size || 1306 !dev->ethtool_ops->get_rxfh) 1307 return -EOPNOTSUPP; 1308 rxfh.indir_size = dev->ethtool_ops->get_rxfh_indir_size(dev); 1309 if (rxfh.indir_size == 0) 1310 return -EOPNOTSUPP; 1311 1312 if (copy_from_user(&user_size, 1313 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1314 sizeof(user_size))) 1315 return -EFAULT; 1316 1317 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), 1318 &rxfh.indir_size, sizeof(rxfh.indir_size))) 1319 return -EFAULT; 1320 1321 /* If the user buffer size is 0, this is just a query for the 1322 * device table size. Otherwise, if it's smaller than the 1323 * device table size it's an error. 1324 */ 1325 if (user_size < rxfh.indir_size) 1326 return user_size == 0 ? 0 : -EINVAL; 1327 1328 rxfh.indir = kcalloc(rxfh.indir_size, sizeof(rxfh.indir[0]), GFP_USER); 1329 if (!rxfh.indir) 1330 return -ENOMEM; 1331 1332 mutex_lock(&dev->ethtool->rss_lock); 1333 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh); 1334 mutex_unlock(&dev->ethtool->rss_lock); 1335 if (ret) 1336 goto out; 1337 if (copy_to_user(useraddr + 1338 offsetof(struct ethtool_rxfh_indir, ring_index[0]), 1339 rxfh.indir, rxfh.indir_size * sizeof(*rxfh.indir))) 1340 ret = -EFAULT; 1341 1342 out: 1343 kfree(rxfh.indir); 1344 return ret; 1345 } 1346 1347 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, 1348 void __user *useraddr) 1349 { 1350 const struct ethtool_ops *ops = dev->ethtool_ops; 1351 struct ethtool_rxfh_param rxfh_dev = {}; 1352 struct netlink_ext_ack *extack = NULL; 1353 int num_rx_rings; 1354 u32 user_size, i; 1355 int ret; 1356 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); 1357 1358 if (!ops->get_rxfh_indir_size || !ops->set_rxfh) 1359 return -EOPNOTSUPP; 1360 1361 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1362 if (rxfh_dev.indir_size == 0) 1363 return -EOPNOTSUPP; 1364 1365 if (copy_from_user(&user_size, 1366 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1367 sizeof(user_size))) 1368 return -EFAULT; 1369 1370 if (user_size != 0 && user_size != rxfh_dev.indir_size) 1371 return -EINVAL; 1372 1373 rxfh_dev.indir = kcalloc(rxfh_dev.indir_size, 1374 sizeof(rxfh_dev.indir[0]), GFP_USER); 1375 if (!rxfh_dev.indir) 1376 return -ENOMEM; 1377 1378 num_rx_rings = ethtool_get_rx_ring_count(dev); 1379 if (num_rx_rings < 0) { 1380 ret = num_rx_rings; 1381 goto out; 1382 } 1383 1384 if (user_size == 0) { 1385 u32 *indir = rxfh_dev.indir; 1386 1387 for (i = 0; i < rxfh_dev.indir_size; i++) 1388 indir[i] = ethtool_rxfh_indir_default(i, num_rx_rings); 1389 } else { 1390 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1391 useraddr + ringidx_offset, 1392 num_rx_rings, 1393 rxfh_dev.indir_size); 1394 if (ret) 1395 goto out; 1396 } 1397 1398 rxfh_dev.hfunc = ETH_RSS_HASH_NO_CHANGE; 1399 1400 mutex_lock(&dev->ethtool->rss_lock); 1401 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1402 if (ret) 1403 goto out_unlock; 1404 1405 /* indicate whether rxfh was set to default */ 1406 if (user_size == 0) 1407 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1408 else 1409 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1410 1411 out_unlock: 1412 mutex_unlock(&dev->ethtool->rss_lock); 1413 out: 1414 kfree(rxfh_dev.indir); 1415 return ret; 1416 } 1417 1418 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, 1419 void __user *useraddr) 1420 { 1421 const struct ethtool_ops *ops = dev->ethtool_ops; 1422 struct ethtool_rxfh_param rxfh_dev = {}; 1423 u32 user_indir_size, user_key_size; 1424 struct ethtool_rxfh_context *ctx; 1425 struct ethtool_rxfh rxfh; 1426 u32 indir_bytes; 1427 u8 *rss_config; 1428 u32 total_size; 1429 int ret; 1430 1431 if (!ops->get_rxfh) 1432 return -EOPNOTSUPP; 1433 1434 if (ops->get_rxfh_indir_size) 1435 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1436 if (ops->get_rxfh_key_size) 1437 rxfh_dev.key_size = ops->get_rxfh_key_size(dev); 1438 1439 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1440 return -EFAULT; 1441 user_indir_size = rxfh.indir_size; 1442 user_key_size = rxfh.key_size; 1443 1444 /* Check that reserved fields are 0 for now */ 1445 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1446 return -EINVAL; 1447 /* Most drivers don't handle rss_context, check it's 0 as well */ 1448 if (rxfh.rss_context && !ops->create_rxfh_context) 1449 return -EOPNOTSUPP; 1450 1451 rxfh.indir_size = rxfh_dev.indir_size; 1452 rxfh.key_size = rxfh_dev.key_size; 1453 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) 1454 return -EFAULT; 1455 1456 if ((user_indir_size && user_indir_size != rxfh_dev.indir_size) || 1457 (user_key_size && user_key_size != rxfh_dev.key_size)) 1458 return -EINVAL; 1459 1460 indir_bytes = user_indir_size * sizeof(rxfh_dev.indir[0]); 1461 total_size = indir_bytes + user_key_size; 1462 rss_config = kzalloc(total_size, GFP_USER); 1463 if (!rss_config) 1464 return -ENOMEM; 1465 1466 if (user_indir_size) 1467 rxfh_dev.indir = (u32 *)rss_config; 1468 1469 if (user_key_size) 1470 rxfh_dev.key = rss_config + indir_bytes; 1471 1472 mutex_lock(&dev->ethtool->rss_lock); 1473 if (rxfh.rss_context) { 1474 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1475 if (!ctx) { 1476 ret = -ENOENT; 1477 goto out; 1478 } 1479 if (rxfh_dev.indir) 1480 memcpy(rxfh_dev.indir, ethtool_rxfh_context_indir(ctx), 1481 indir_bytes); 1482 if (!ops->rxfh_per_ctx_key) { 1483 rxfh_dev.key_size = 0; 1484 } else { 1485 if (rxfh_dev.key) 1486 memcpy(rxfh_dev.key, 1487 ethtool_rxfh_context_key(ctx), 1488 user_key_size); 1489 rxfh_dev.hfunc = ctx->hfunc; 1490 } 1491 rxfh_dev.input_xfrm = ctx->input_xfrm; 1492 ret = 0; 1493 } else { 1494 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh_dev); 1495 if (ret) 1496 goto out; 1497 } 1498 1499 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), 1500 &rxfh_dev.hfunc, sizeof(rxfh.hfunc))) { 1501 ret = -EFAULT; 1502 } else if (copy_to_user(useraddr + 1503 offsetof(struct ethtool_rxfh, input_xfrm), 1504 &rxfh_dev.input_xfrm, 1505 sizeof(rxfh.input_xfrm))) { 1506 ret = -EFAULT; 1507 } else if (copy_to_user(useraddr + 1508 offsetof(struct ethtool_rxfh, key_size), 1509 &rxfh_dev.key_size, 1510 sizeof(rxfh.key_size))) { 1511 ret = -EFAULT; 1512 } else if (copy_to_user(useraddr + 1513 offsetof(struct ethtool_rxfh, rss_config[0]), 1514 rss_config, total_size)) { 1515 ret = -EFAULT; 1516 } 1517 out: 1518 mutex_unlock(&dev->ethtool->rss_lock); 1519 kfree(rss_config); 1520 1521 return ret; 1522 } 1523 1524 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, 1525 void __user *useraddr) 1526 { 1527 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); 1528 const struct ethtool_ops *ops = dev->ethtool_ops; 1529 u32 dev_indir_size = 0, dev_key_size = 0, i; 1530 u32 user_indir_len = 0, indir_bytes = 0; 1531 struct ethtool_rxfh_param rxfh_dev = {}; 1532 struct ethtool_rxfh_context *ctx = NULL; 1533 struct netlink_ext_ack *extack = NULL; 1534 struct ethtool_rxfh rxfh; 1535 bool create = false; 1536 int num_rx_rings; 1537 u8 *rss_config; 1538 int ntf = 0; 1539 int ret; 1540 1541 if (!ops->set_rxfh) 1542 return -EOPNOTSUPP; 1543 1544 if (ops->get_rxfh_indir_size) 1545 dev_indir_size = ops->get_rxfh_indir_size(dev); 1546 if (ops->get_rxfh_key_size) 1547 dev_key_size = ops->get_rxfh_key_size(dev); 1548 1549 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1550 return -EFAULT; 1551 1552 /* Check that reserved fields are 0 for now */ 1553 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1554 return -EINVAL; 1555 /* Most drivers don't handle rss_context, check it's 0 as well */ 1556 if (rxfh.rss_context && !ops->create_rxfh_context) 1557 return -EOPNOTSUPP; 1558 /* Check input data transformation capabilities */ 1559 if (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_SYM_XOR && 1560 rxfh.input_xfrm != RXH_XFRM_SYM_OR_XOR && 1561 rxfh.input_xfrm != RXH_XFRM_NO_CHANGE) 1562 return -EINVAL; 1563 if (rxfh.input_xfrm != RXH_XFRM_NO_CHANGE && 1564 rxfh.input_xfrm & ~ops->supported_input_xfrm) 1565 return -EOPNOTSUPP; 1566 create = rxfh.rss_context == ETH_RXFH_CONTEXT_ALLOC; 1567 1568 if ((rxfh.indir_size && 1569 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && 1570 rxfh.indir_size != dev_indir_size) || 1571 (rxfh.key_size && rxfh.key_size != dev_key_size)) 1572 return -EINVAL; 1573 1574 /* Must request at least one change: indir size, hash key, function 1575 * or input transformation. 1576 * There's no need for any of it in case of context creation. 1577 */ 1578 if (!create && 1579 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && 1580 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE && 1581 rxfh.input_xfrm == RXH_XFRM_NO_CHANGE)) 1582 return -EINVAL; 1583 1584 indir_bytes = dev_indir_size * sizeof(rxfh_dev.indir[0]); 1585 1586 /* Check settings which may be global rather than per RSS-context */ 1587 if (rxfh.rss_context && !ops->rxfh_per_ctx_key) 1588 if (rxfh.key_size || 1589 (rxfh.hfunc && rxfh.hfunc != ETH_RSS_HASH_NO_CHANGE) || 1590 (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_NO_CHANGE)) 1591 return -EOPNOTSUPP; 1592 1593 rss_config = kzalloc(indir_bytes + dev_key_size, GFP_USER); 1594 if (!rss_config) 1595 return -ENOMEM; 1596 1597 num_rx_rings = ethtool_get_rx_ring_count(dev); 1598 if (num_rx_rings < 0) { 1599 ret = num_rx_rings; 1600 goto out_free; 1601 } 1602 1603 /* rxfh.indir_size == 0 means reset the indir table to default (master 1604 * context) or delete the context (other RSS contexts). 1605 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. 1606 */ 1607 if (rxfh.indir_size && 1608 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { 1609 user_indir_len = indir_bytes; 1610 rxfh_dev.indir = (u32 *)rss_config; 1611 rxfh_dev.indir_size = dev_indir_size; 1612 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1613 useraddr + rss_cfg_offset, 1614 num_rx_rings, 1615 rxfh.indir_size); 1616 if (ret) 1617 goto out_free; 1618 } else if (rxfh.indir_size == 0) { 1619 if (rxfh.rss_context == 0) { 1620 u32 *indir; 1621 1622 rxfh_dev.indir = (u32 *)rss_config; 1623 rxfh_dev.indir_size = dev_indir_size; 1624 indir = rxfh_dev.indir; 1625 for (i = 0; i < dev_indir_size; i++) 1626 indir[i] = 1627 ethtool_rxfh_indir_default(i, num_rx_rings); 1628 } else { 1629 rxfh_dev.rss_delete = true; 1630 } 1631 } 1632 1633 if (rxfh.key_size) { 1634 rxfh_dev.key_size = dev_key_size; 1635 rxfh_dev.key = rss_config + indir_bytes; 1636 if (copy_from_user(rxfh_dev.key, 1637 useraddr + rss_cfg_offset + user_indir_len, 1638 rxfh.key_size)) { 1639 ret = -EFAULT; 1640 goto out_free; 1641 } 1642 } 1643 1644 mutex_lock(&dev->ethtool->rss_lock); 1645 1646 ret = ethtool_check_flow_types(dev, rxfh.input_xfrm); 1647 if (ret) 1648 goto out_unlock; 1649 1650 if (rxfh.rss_context && rxfh_dev.rss_delete) { 1651 ret = ethtool_check_rss_ctx_busy(dev, rxfh.rss_context); 1652 if (ret) 1653 goto out_unlock; 1654 } 1655 1656 if (create) { 1657 u32 limit, ctx_id; 1658 1659 if (rxfh_dev.rss_delete) { 1660 ret = -EINVAL; 1661 goto out_unlock; 1662 } 1663 ctx = ethtool_rxfh_ctx_alloc(ops, dev_indir_size, dev_key_size); 1664 if (!ctx) { 1665 ret = -ENOMEM; 1666 goto out_unlock; 1667 } 1668 1669 limit = ops->rxfh_max_num_contexts ?: U32_MAX; 1670 ret = xa_alloc(&dev->ethtool->rss_ctx, &ctx_id, ctx, 1671 XA_LIMIT(1, limit - 1), GFP_KERNEL_ACCOUNT); 1672 if (ret < 0) { 1673 kfree(ctx); 1674 goto out_unlock; 1675 } 1676 WARN_ON(!ctx_id); /* can't happen */ 1677 rxfh.rss_context = ctx_id; 1678 } else if (rxfh.rss_context) { 1679 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1680 if (!ctx) { 1681 ret = -ENOENT; 1682 goto out_unlock; 1683 } 1684 } 1685 rxfh_dev.hfunc = rxfh.hfunc; 1686 rxfh_dev.rss_context = rxfh.rss_context; 1687 rxfh_dev.input_xfrm = rxfh.input_xfrm; 1688 1689 if (!rxfh.rss_context) { 1690 ntf = ETHTOOL_MSG_RSS_NTF; 1691 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1692 } else if (create) { 1693 ntf = ETHTOOL_MSG_RSS_CREATE_NTF; 1694 ret = ops->create_rxfh_context(dev, ctx, &rxfh_dev, extack); 1695 /* Make sure driver populates defaults */ 1696 WARN_ON_ONCE(!ret && !rxfh_dev.key && ops->rxfh_per_ctx_key && 1697 !memchr_inv(ethtool_rxfh_context_key(ctx), 0, 1698 ctx->key_size)); 1699 } else if (rxfh_dev.rss_delete) { 1700 ntf = ETHTOOL_MSG_RSS_DELETE_NTF; 1701 ret = ops->remove_rxfh_context(dev, ctx, rxfh.rss_context, 1702 extack); 1703 } else { 1704 ntf = ETHTOOL_MSG_RSS_NTF; 1705 ret = ops->modify_rxfh_context(dev, ctx, &rxfh_dev, extack); 1706 } 1707 if (ret) { 1708 ntf = 0; 1709 if (create) { 1710 /* failed to create, free our new tracking entry */ 1711 xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context); 1712 kfree(ctx); 1713 } 1714 goto out_unlock; 1715 } 1716 1717 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), 1718 &rxfh_dev.rss_context, sizeof(rxfh_dev.rss_context))) 1719 ret = -EFAULT; 1720 1721 if (!rxfh_dev.rss_context) { 1722 /* indicate whether rxfh was set to default */ 1723 if (rxfh.indir_size == 0) 1724 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1725 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1726 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1727 } 1728 /* Update rss_ctx tracking */ 1729 if (rxfh_dev.rss_delete) { 1730 WARN_ON(xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context) != ctx); 1731 kfree(ctx); 1732 } else if (ctx) { 1733 if (rxfh_dev.indir) { 1734 for (i = 0; i < dev_indir_size; i++) 1735 ethtool_rxfh_context_indir(ctx)[i] = rxfh_dev.indir[i]; 1736 ctx->indir_configured = 1737 rxfh.indir_size && 1738 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE; 1739 } 1740 if (rxfh_dev.key) { 1741 memcpy(ethtool_rxfh_context_key(ctx), rxfh_dev.key, 1742 dev_key_size); 1743 ctx->key_configured = !!rxfh.key_size; 1744 } 1745 if (rxfh_dev.hfunc != ETH_RSS_HASH_NO_CHANGE) 1746 ctx->hfunc = rxfh_dev.hfunc; 1747 if (rxfh_dev.input_xfrm != RXH_XFRM_NO_CHANGE) 1748 ctx->input_xfrm = rxfh_dev.input_xfrm; 1749 } 1750 1751 out_unlock: 1752 mutex_unlock(&dev->ethtool->rss_lock); 1753 out_free: 1754 kfree(rss_config); 1755 if (ntf) 1756 ethtool_rss_notify(dev, ntf, rxfh.rss_context); 1757 return ret; 1758 } 1759 1760 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) 1761 { 1762 struct ethtool_regs regs; 1763 const struct ethtool_ops *ops = dev->ethtool_ops; 1764 void *regbuf; 1765 int reglen, ret; 1766 1767 if (!ops->get_regs || !ops->get_regs_len) 1768 return -EOPNOTSUPP; 1769 1770 if (copy_from_user(®s, useraddr, sizeof(regs))) 1771 return -EFAULT; 1772 1773 reglen = ops->get_regs_len(dev); 1774 if (reglen <= 0) 1775 return reglen; 1776 1777 if (regs.len > reglen) 1778 regs.len = reglen; 1779 1780 regbuf = vzalloc(reglen); 1781 if (!regbuf) 1782 return -ENOMEM; 1783 1784 if (regs.len < reglen) 1785 reglen = regs.len; 1786 1787 ops->get_regs(dev, ®s, regbuf); 1788 1789 ret = -EFAULT; 1790 if (copy_to_user(useraddr, ®s, sizeof(regs))) 1791 goto out; 1792 useraddr += offsetof(struct ethtool_regs, data); 1793 if (copy_to_user(useraddr, regbuf, reglen)) 1794 goto out; 1795 ret = 0; 1796 1797 out: 1798 vfree(regbuf); 1799 return ret; 1800 } 1801 1802 static int ethtool_reset(struct net_device *dev, char __user *useraddr) 1803 { 1804 struct ethtool_value reset; 1805 int ret; 1806 1807 if (!dev->ethtool_ops->reset) 1808 return -EOPNOTSUPP; 1809 1810 if (dev->ethtool->module_fw_flash_in_progress) 1811 return -EBUSY; 1812 1813 if (copy_from_user(&reset, useraddr, sizeof(reset))) 1814 return -EFAULT; 1815 1816 ret = dev->ethtool_ops->reset(dev, &reset.data); 1817 if (ret) 1818 return ret; 1819 1820 if (copy_to_user(useraddr, &reset, sizeof(reset))) 1821 return -EFAULT; 1822 return 0; 1823 } 1824 1825 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) 1826 { 1827 struct ethtool_wolinfo wol; 1828 1829 if (!dev->ethtool_ops->get_wol) 1830 return -EOPNOTSUPP; 1831 1832 memset(&wol, 0, sizeof(struct ethtool_wolinfo)); 1833 wol.cmd = ETHTOOL_GWOL; 1834 dev->ethtool_ops->get_wol(dev, &wol); 1835 1836 if (copy_to_user(useraddr, &wol, sizeof(wol))) 1837 return -EFAULT; 1838 return 0; 1839 } 1840 1841 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) 1842 { 1843 struct ethtool_wolinfo wol, cur_wol; 1844 int ret; 1845 1846 if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol) 1847 return -EOPNOTSUPP; 1848 1849 memset(&cur_wol, 0, sizeof(struct ethtool_wolinfo)); 1850 cur_wol.cmd = ETHTOOL_GWOL; 1851 dev->ethtool_ops->get_wol(dev, &cur_wol); 1852 1853 if (copy_from_user(&wol, useraddr, sizeof(wol))) 1854 return -EFAULT; 1855 1856 if (wol.wolopts & ~cur_wol.supported) 1857 return -EINVAL; 1858 1859 if (wol.wolopts == cur_wol.wolopts && 1860 !memcmp(wol.sopass, cur_wol.sopass, sizeof(wol.sopass))) 1861 return 0; 1862 1863 ret = dev->ethtool_ops->set_wol(dev, &wol); 1864 if (ret) 1865 return ret; 1866 1867 dev->ethtool->wol_enabled = !!wol.wolopts; 1868 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF); 1869 1870 return 0; 1871 } 1872 1873 static void eee_to_keee(struct ethtool_keee *keee, 1874 const struct ethtool_eee *eee) 1875 { 1876 memset(keee, 0, sizeof(*keee)); 1877 1878 keee->eee_enabled = eee->eee_enabled; 1879 keee->tx_lpi_enabled = eee->tx_lpi_enabled; 1880 keee->tx_lpi_timer = eee->tx_lpi_timer; 1881 1882 ethtool_convert_legacy_u32_to_link_mode(keee->advertised, 1883 eee->advertised); 1884 } 1885 1886 static void keee_to_eee(struct ethtool_eee *eee, 1887 const struct ethtool_keee *keee) 1888 { 1889 bool overflow; 1890 1891 memset(eee, 0, sizeof(*eee)); 1892 1893 eee->eee_active = keee->eee_active; 1894 eee->eee_enabled = keee->eee_enabled; 1895 eee->tx_lpi_enabled = keee->tx_lpi_enabled; 1896 eee->tx_lpi_timer = keee->tx_lpi_timer; 1897 1898 overflow = !ethtool_convert_link_mode_to_legacy_u32(&eee->supported, 1899 keee->supported); 1900 ethtool_convert_link_mode_to_legacy_u32(&eee->advertised, 1901 keee->advertised); 1902 ethtool_convert_link_mode_to_legacy_u32(&eee->lp_advertised, 1903 keee->lp_advertised); 1904 if (overflow) 1905 pr_warn("Ethtool ioctl interface doesn't support passing EEE linkmodes beyond bit 32\n"); 1906 } 1907 1908 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) 1909 { 1910 struct ethtool_keee keee; 1911 struct ethtool_eee eee; 1912 int rc; 1913 1914 if (!dev->ethtool_ops->get_eee) 1915 return -EOPNOTSUPP; 1916 1917 memset(&keee, 0, sizeof(keee)); 1918 rc = dev->ethtool_ops->get_eee(dev, &keee); 1919 if (rc) 1920 return rc; 1921 1922 keee_to_eee(&eee, &keee); 1923 if (copy_to_user(useraddr, &eee, sizeof(eee))) 1924 return -EFAULT; 1925 1926 return 0; 1927 } 1928 1929 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) 1930 { 1931 struct ethtool_keee keee; 1932 struct ethtool_eee eee; 1933 int ret; 1934 1935 if (!dev->ethtool_ops->set_eee) 1936 return -EOPNOTSUPP; 1937 1938 if (copy_from_user(&eee, useraddr, sizeof(eee))) 1939 return -EFAULT; 1940 1941 eee_to_keee(&keee, &eee); 1942 ret = dev->ethtool_ops->set_eee(dev, &keee); 1943 if (!ret) 1944 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF); 1945 return ret; 1946 } 1947 1948 static int ethtool_nway_reset(struct net_device *dev) 1949 { 1950 if (!dev->ethtool_ops->nway_reset) 1951 return -EOPNOTSUPP; 1952 1953 return dev->ethtool_ops->nway_reset(dev); 1954 } 1955 1956 static int ethtool_get_link(struct net_device *dev, char __user *useraddr) 1957 { 1958 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; 1959 int link = __ethtool_get_link(dev); 1960 1961 if (link < 0) 1962 return link; 1963 1964 edata.data = link; 1965 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1966 return -EFAULT; 1967 return 0; 1968 } 1969 1970 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, 1971 int (*getter)(struct net_device *, 1972 struct ethtool_eeprom *, u8 *), 1973 u32 total_len) 1974 { 1975 struct ethtool_eeprom eeprom; 1976 void __user *userbuf = useraddr + sizeof(eeprom); 1977 u32 bytes_remaining; 1978 u8 *data; 1979 int ret = 0; 1980 1981 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1982 return -EFAULT; 1983 1984 /* Check for wrap and zero */ 1985 if (eeprom.offset + eeprom.len <= eeprom.offset) 1986 return -EINVAL; 1987 1988 /* Check for exceeding total eeprom len */ 1989 if (eeprom.offset + eeprom.len > total_len) 1990 return -EINVAL; 1991 1992 data = kzalloc(PAGE_SIZE, GFP_USER); 1993 if (!data) 1994 return -ENOMEM; 1995 1996 bytes_remaining = eeprom.len; 1997 while (bytes_remaining > 0) { 1998 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1999 2000 ret = getter(dev, &eeprom, data); 2001 if (ret) 2002 break; 2003 if (!eeprom.len) { 2004 ret = -EIO; 2005 break; 2006 } 2007 if (copy_to_user(userbuf, data, eeprom.len)) { 2008 ret = -EFAULT; 2009 break; 2010 } 2011 userbuf += eeprom.len; 2012 eeprom.offset += eeprom.len; 2013 bytes_remaining -= eeprom.len; 2014 } 2015 2016 eeprom.len = userbuf - (useraddr + sizeof(eeprom)); 2017 eeprom.offset -= eeprom.len; 2018 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) 2019 ret = -EFAULT; 2020 2021 kfree(data); 2022 return ret; 2023 } 2024 2025 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) 2026 { 2027 const struct ethtool_ops *ops = dev->ethtool_ops; 2028 2029 if (!ops->get_eeprom || !ops->get_eeprom_len || 2030 !ops->get_eeprom_len(dev)) 2031 return -EOPNOTSUPP; 2032 2033 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, 2034 ops->get_eeprom_len(dev)); 2035 } 2036 2037 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) 2038 { 2039 struct ethtool_eeprom eeprom; 2040 const struct ethtool_ops *ops = dev->ethtool_ops; 2041 void __user *userbuf = useraddr + sizeof(eeprom); 2042 u32 bytes_remaining; 2043 u8 *data; 2044 int ret = 0; 2045 2046 if (!ops->set_eeprom || !ops->get_eeprom_len || 2047 !ops->get_eeprom_len(dev)) 2048 return -EOPNOTSUPP; 2049 2050 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 2051 return -EFAULT; 2052 2053 /* Check for wrap and zero */ 2054 if (eeprom.offset + eeprom.len <= eeprom.offset) 2055 return -EINVAL; 2056 2057 /* Check for exceeding total eeprom len */ 2058 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) 2059 return -EINVAL; 2060 2061 data = kzalloc(PAGE_SIZE, GFP_USER); 2062 if (!data) 2063 return -ENOMEM; 2064 2065 bytes_remaining = eeprom.len; 2066 while (bytes_remaining > 0) { 2067 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 2068 2069 if (copy_from_user(data, userbuf, eeprom.len)) { 2070 ret = -EFAULT; 2071 break; 2072 } 2073 ret = ops->set_eeprom(dev, &eeprom, data); 2074 if (ret) 2075 break; 2076 userbuf += eeprom.len; 2077 eeprom.offset += eeprom.len; 2078 bytes_remaining -= eeprom.len; 2079 } 2080 2081 kfree(data); 2082 return ret; 2083 } 2084 2085 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, 2086 void __user *useraddr) 2087 { 2088 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2089 struct kernel_ethtool_coalesce kernel_coalesce = {}; 2090 int ret; 2091 2092 if (!dev->ethtool_ops->get_coalesce) 2093 return -EOPNOTSUPP; 2094 2095 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 2096 NULL); 2097 if (ret) 2098 return ret; 2099 2100 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2101 return -EFAULT; 2102 return 0; 2103 } 2104 2105 static bool 2106 ethtool_set_coalesce_supported(struct net_device *dev, 2107 struct ethtool_coalesce *coalesce) 2108 { 2109 u32 supported_params = dev->ethtool_ops->supported_coalesce_params; 2110 u32 nonzero_params = 0; 2111 2112 if (coalesce->rx_coalesce_usecs) 2113 nonzero_params |= ETHTOOL_COALESCE_RX_USECS; 2114 if (coalesce->rx_max_coalesced_frames) 2115 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; 2116 if (coalesce->rx_coalesce_usecs_irq) 2117 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; 2118 if (coalesce->rx_max_coalesced_frames_irq) 2119 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; 2120 if (coalesce->tx_coalesce_usecs) 2121 nonzero_params |= ETHTOOL_COALESCE_TX_USECS; 2122 if (coalesce->tx_max_coalesced_frames) 2123 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; 2124 if (coalesce->tx_coalesce_usecs_irq) 2125 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; 2126 if (coalesce->tx_max_coalesced_frames_irq) 2127 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; 2128 if (coalesce->stats_block_coalesce_usecs) 2129 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; 2130 if (coalesce->use_adaptive_rx_coalesce) 2131 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; 2132 if (coalesce->use_adaptive_tx_coalesce) 2133 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; 2134 if (coalesce->pkt_rate_low) 2135 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; 2136 if (coalesce->rx_coalesce_usecs_low) 2137 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; 2138 if (coalesce->rx_max_coalesced_frames_low) 2139 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; 2140 if (coalesce->tx_coalesce_usecs_low) 2141 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; 2142 if (coalesce->tx_max_coalesced_frames_low) 2143 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; 2144 if (coalesce->pkt_rate_high) 2145 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; 2146 if (coalesce->rx_coalesce_usecs_high) 2147 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; 2148 if (coalesce->rx_max_coalesced_frames_high) 2149 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; 2150 if (coalesce->tx_coalesce_usecs_high) 2151 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; 2152 if (coalesce->tx_max_coalesced_frames_high) 2153 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; 2154 if (coalesce->rate_sample_interval) 2155 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; 2156 2157 return (supported_params & nonzero_params) == nonzero_params; 2158 } 2159 2160 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, 2161 void __user *useraddr) 2162 { 2163 struct kernel_ethtool_coalesce kernel_coalesce = {}; 2164 struct ethtool_coalesce coalesce; 2165 int ret; 2166 2167 if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce) 2168 return -EOPNOTSUPP; 2169 2170 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 2171 NULL); 2172 if (ret) 2173 return ret; 2174 2175 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) 2176 return -EFAULT; 2177 2178 if (!ethtool_set_coalesce_supported(dev, &coalesce)) 2179 return -EOPNOTSUPP; 2180 2181 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, 2182 NULL); 2183 if (!ret) 2184 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF); 2185 return ret; 2186 } 2187 2188 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) 2189 { 2190 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; 2191 struct kernel_ethtool_ringparam kernel_ringparam = {}; 2192 2193 if (!dev->ethtool_ops->get_ringparam) 2194 return -EOPNOTSUPP; 2195 2196 dev->ethtool_ops->get_ringparam(dev, &ringparam, 2197 &kernel_ringparam, NULL); 2198 2199 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) 2200 return -EFAULT; 2201 return 0; 2202 } 2203 2204 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) 2205 { 2206 struct kernel_ethtool_ringparam kernel_ringparam; 2207 struct ethtool_ringparam ringparam, max; 2208 int ret; 2209 2210 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) 2211 return -EOPNOTSUPP; 2212 2213 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) 2214 return -EFAULT; 2215 2216 ethtool_ringparam_get_cfg(dev, &max, &kernel_ringparam, NULL); 2217 2218 /* ensure new ring parameters are within the maximums */ 2219 if (ringparam.rx_pending > max.rx_max_pending || 2220 ringparam.rx_mini_pending > max.rx_mini_max_pending || 2221 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || 2222 ringparam.tx_pending > max.tx_max_pending) 2223 return -EINVAL; 2224 2225 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, 2226 &kernel_ringparam, NULL); 2227 if (!ret) 2228 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF); 2229 return ret; 2230 } 2231 2232 static noinline_for_stack int ethtool_get_channels(struct net_device *dev, 2233 void __user *useraddr) 2234 { 2235 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; 2236 2237 if (!dev->ethtool_ops->get_channels) 2238 return -EOPNOTSUPP; 2239 2240 dev->ethtool_ops->get_channels(dev, &channels); 2241 2242 if (copy_to_user(useraddr, &channels, sizeof(channels))) 2243 return -EFAULT; 2244 return 0; 2245 } 2246 2247 static noinline_for_stack int ethtool_set_channels(struct net_device *dev, 2248 void __user *useraddr) 2249 { 2250 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; 2251 u16 from_channel, to_channel; 2252 unsigned int i; 2253 int ret; 2254 2255 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) 2256 return -EOPNOTSUPP; 2257 2258 if (copy_from_user(&channels, useraddr, sizeof(channels))) 2259 return -EFAULT; 2260 2261 dev->ethtool_ops->get_channels(dev, &curr); 2262 2263 if (channels.rx_count == curr.rx_count && 2264 channels.tx_count == curr.tx_count && 2265 channels.combined_count == curr.combined_count && 2266 channels.other_count == curr.other_count) 2267 return 0; 2268 2269 /* ensure new counts are within the maximums */ 2270 if (channels.rx_count > curr.max_rx || 2271 channels.tx_count > curr.max_tx || 2272 channels.combined_count > curr.max_combined || 2273 channels.other_count > curr.max_other) 2274 return -EINVAL; 2275 2276 /* ensure there is at least one RX and one TX channel */ 2277 if (!channels.combined_count && 2278 (!channels.rx_count || !channels.tx_count)) 2279 return -EINVAL; 2280 2281 ret = ethtool_check_max_channel(dev, channels, NULL); 2282 if (ret) 2283 return ret; 2284 2285 /* Disabling channels, query zero-copy AF_XDP sockets */ 2286 from_channel = channels.combined_count + 2287 min(channels.rx_count, channels.tx_count); 2288 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); 2289 for (i = from_channel; i < to_channel; i++) 2290 if (xsk_get_pool_from_qid(dev, i)) 2291 return -EINVAL; 2292 2293 ret = dev->ethtool_ops->set_channels(dev, &channels); 2294 if (!ret) 2295 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF); 2296 return ret; 2297 } 2298 2299 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) 2300 { 2301 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; 2302 2303 if (!dev->ethtool_ops->get_pauseparam) 2304 return -EOPNOTSUPP; 2305 2306 dev->ethtool_ops->get_pauseparam(dev, &pauseparam); 2307 2308 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) 2309 return -EFAULT; 2310 return 0; 2311 } 2312 2313 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) 2314 { 2315 struct ethtool_pauseparam pauseparam; 2316 int ret; 2317 2318 if (!dev->ethtool_ops->set_pauseparam) 2319 return -EOPNOTSUPP; 2320 2321 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) 2322 return -EFAULT; 2323 2324 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); 2325 if (!ret) 2326 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF); 2327 return ret; 2328 } 2329 2330 static int ethtool_self_test(struct net_device *dev, char __user *useraddr) 2331 { 2332 struct ethtool_test test; 2333 const struct ethtool_ops *ops = dev->ethtool_ops; 2334 u64 *data; 2335 int ret, test_len; 2336 2337 if (!ops->self_test || !ops->get_sset_count) 2338 return -EOPNOTSUPP; 2339 2340 test_len = ops->get_sset_count(dev, ETH_SS_TEST); 2341 if (test_len < 0) 2342 return test_len; 2343 WARN_ON(test_len == 0); 2344 2345 if (copy_from_user(&test, useraddr, sizeof(test))) 2346 return -EFAULT; 2347 2348 test.len = test_len; 2349 data = kcalloc(test_len, sizeof(u64), GFP_USER); 2350 if (!data) 2351 return -ENOMEM; 2352 2353 netif_testing_on(dev); 2354 ops->self_test(dev, &test, data); 2355 netif_testing_off(dev); 2356 2357 ret = -EFAULT; 2358 if (copy_to_user(useraddr, &test, sizeof(test))) 2359 goto out; 2360 useraddr += sizeof(test); 2361 if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) 2362 goto out; 2363 ret = 0; 2364 2365 out: 2366 kfree(data); 2367 return ret; 2368 } 2369 2370 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) 2371 { 2372 struct ethtool_gstrings gstrings; 2373 u8 *data; 2374 int ret; 2375 2376 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) 2377 return -EFAULT; 2378 2379 ret = __ethtool_get_sset_count(dev, gstrings.string_set); 2380 if (ret < 0) 2381 return ret; 2382 if (ret > S32_MAX / ETH_GSTRING_LEN) 2383 return -ENOMEM; 2384 WARN_ON_ONCE(!ret); 2385 2386 gstrings.len = ret; 2387 2388 if (gstrings.len) { 2389 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); 2390 if (!data) 2391 return -ENOMEM; 2392 2393 __ethtool_get_strings(dev, gstrings.string_set, data); 2394 } else { 2395 data = NULL; 2396 } 2397 2398 ret = -EFAULT; 2399 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) 2400 goto out; 2401 useraddr += sizeof(gstrings); 2402 if (gstrings.len && 2403 copy_to_user(useraddr, data, 2404 array_size(gstrings.len, ETH_GSTRING_LEN))) 2405 goto out; 2406 ret = 0; 2407 2408 out: 2409 vfree(data); 2410 return ret; 2411 } 2412 2413 __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) 2414 { 2415 va_list args; 2416 2417 va_start(args, fmt); 2418 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); 2419 va_end(args); 2420 2421 *data += ETH_GSTRING_LEN; 2422 } 2423 EXPORT_SYMBOL(ethtool_sprintf); 2424 2425 void ethtool_puts(u8 **data, const char *str) 2426 { 2427 strscpy(*data, str, ETH_GSTRING_LEN); 2428 *data += ETH_GSTRING_LEN; 2429 } 2430 EXPORT_SYMBOL(ethtool_puts); 2431 2432 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) 2433 { 2434 struct ethtool_value id; 2435 static bool busy; 2436 const struct ethtool_ops *ops = dev->ethtool_ops; 2437 netdevice_tracker dev_tracker; 2438 int rc; 2439 2440 if (!ops->set_phys_id) 2441 return -EOPNOTSUPP; 2442 2443 if (busy) 2444 return -EBUSY; 2445 2446 if (copy_from_user(&id, useraddr, sizeof(id))) 2447 return -EFAULT; 2448 2449 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); 2450 if (rc < 0) 2451 return rc; 2452 2453 /* Drop the RTNL lock while waiting, but prevent reentry or 2454 * removal of the device. 2455 */ 2456 busy = true; 2457 netdev_hold(dev, &dev_tracker, GFP_KERNEL); 2458 netdev_unlock_ops(dev); 2459 rtnl_unlock(); 2460 2461 if (rc == 0) { 2462 /* Driver will handle this itself */ 2463 schedule_timeout_interruptible( 2464 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); 2465 } else { 2466 /* Driver expects to be called at twice the frequency in rc */ 2467 int n = rc * 2, interval = HZ / n; 2468 u64 count = mul_u32_u32(n, id.data); 2469 u64 i = 0; 2470 2471 do { 2472 rtnl_lock(); 2473 netdev_lock_ops(dev); 2474 rc = ops->set_phys_id(dev, 2475 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); 2476 netdev_unlock_ops(dev); 2477 rtnl_unlock(); 2478 if (rc) 2479 break; 2480 schedule_timeout_interruptible(interval); 2481 } while (!signal_pending(current) && (!id.data || i < count)); 2482 } 2483 2484 rtnl_lock(); 2485 netdev_lock_ops(dev); 2486 netdev_put(dev, &dev_tracker); 2487 busy = false; 2488 2489 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); 2490 return rc; 2491 } 2492 2493 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) 2494 { 2495 struct ethtool_stats stats; 2496 const struct ethtool_ops *ops = dev->ethtool_ops; 2497 u64 *data; 2498 int ret, n_stats; 2499 2500 if (!ops->get_ethtool_stats || !ops->get_sset_count) 2501 return -EOPNOTSUPP; 2502 2503 n_stats = ops->get_sset_count(dev, ETH_SS_STATS); 2504 if (n_stats < 0) 2505 return n_stats; 2506 if (n_stats > S32_MAX / sizeof(u64)) 2507 return -ENOMEM; 2508 WARN_ON_ONCE(!n_stats); 2509 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2510 return -EFAULT; 2511 2512 stats.n_stats = n_stats; 2513 2514 if (n_stats) { 2515 data = vzalloc(array_size(n_stats, sizeof(u64))); 2516 if (!data) 2517 return -ENOMEM; 2518 ops->get_ethtool_stats(dev, &stats, data); 2519 } else { 2520 data = NULL; 2521 } 2522 2523 ret = -EFAULT; 2524 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2525 goto out; 2526 useraddr += sizeof(stats); 2527 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) 2528 goto out; 2529 ret = 0; 2530 2531 out: 2532 vfree(data); 2533 return ret; 2534 } 2535 2536 static int ethtool_vzalloc_stats_array(int n_stats, u64 **data) 2537 { 2538 if (n_stats < 0) 2539 return n_stats; 2540 if (n_stats > S32_MAX / sizeof(u64)) 2541 return -ENOMEM; 2542 if (WARN_ON_ONCE(!n_stats)) 2543 return -EOPNOTSUPP; 2544 2545 *data = vzalloc(array_size(n_stats, sizeof(u64))); 2546 if (!*data) 2547 return -ENOMEM; 2548 2549 return 0; 2550 } 2551 2552 static int ethtool_get_phy_stats_phydev(struct phy_device *phydev, 2553 struct ethtool_stats *stats, 2554 u64 **data) 2555 { 2556 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 2557 int n_stats, ret; 2558 2559 if (!phy_ops || !phy_ops->get_sset_count || !phy_ops->get_stats) 2560 return -EOPNOTSUPP; 2561 2562 n_stats = phy_ops->get_sset_count(phydev); 2563 2564 ret = ethtool_vzalloc_stats_array(n_stats, data); 2565 if (ret) 2566 return ret; 2567 2568 stats->n_stats = n_stats; 2569 return phy_ops->get_stats(phydev, stats, *data); 2570 } 2571 2572 static int ethtool_get_phy_stats_ethtool(struct net_device *dev, 2573 struct ethtool_stats *stats, 2574 u64 **data) 2575 { 2576 const struct ethtool_ops *ops = dev->ethtool_ops; 2577 int n_stats, ret; 2578 2579 if (!ops || !ops->get_sset_count || !ops->get_ethtool_phy_stats) 2580 return -EOPNOTSUPP; 2581 2582 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); 2583 2584 ret = ethtool_vzalloc_stats_array(n_stats, data); 2585 if (ret) 2586 return ret; 2587 2588 stats->n_stats = n_stats; 2589 ops->get_ethtool_phy_stats(dev, stats, *data); 2590 2591 return 0; 2592 } 2593 2594 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) 2595 { 2596 struct phy_device *phydev = dev->phydev; 2597 struct ethtool_stats stats; 2598 u64 *data = NULL; 2599 int ret = -EOPNOTSUPP; 2600 2601 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2602 return -EFAULT; 2603 2604 if (phydev) 2605 ret = ethtool_get_phy_stats_phydev(phydev, &stats, &data); 2606 2607 if (ret == -EOPNOTSUPP) 2608 ret = ethtool_get_phy_stats_ethtool(dev, &stats, &data); 2609 2610 if (ret) 2611 goto out; 2612 2613 if (copy_to_user(useraddr, &stats, sizeof(stats))) { 2614 ret = -EFAULT; 2615 goto out; 2616 } 2617 2618 useraddr += sizeof(stats); 2619 if (copy_to_user(useraddr, data, array_size(stats.n_stats, sizeof(u64)))) 2620 ret = -EFAULT; 2621 2622 out: 2623 vfree(data); 2624 return ret; 2625 } 2626 2627 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) 2628 { 2629 struct ethtool_perm_addr epaddr; 2630 2631 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) 2632 return -EFAULT; 2633 2634 if (epaddr.size < dev->addr_len) 2635 return -ETOOSMALL; 2636 epaddr.size = dev->addr_len; 2637 2638 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) 2639 return -EFAULT; 2640 useraddr += sizeof(epaddr); 2641 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) 2642 return -EFAULT; 2643 return 0; 2644 } 2645 2646 static int ethtool_get_value(struct net_device *dev, char __user *useraddr, 2647 u32 cmd, u32 (*actor)(struct net_device *)) 2648 { 2649 struct ethtool_value edata = { .cmd = cmd }; 2650 2651 if (!actor) 2652 return -EOPNOTSUPP; 2653 2654 edata.data = actor(dev); 2655 2656 if (copy_to_user(useraddr, &edata, sizeof(edata))) 2657 return -EFAULT; 2658 return 0; 2659 } 2660 2661 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, 2662 void (*actor)(struct net_device *, u32)) 2663 { 2664 struct ethtool_value edata; 2665 2666 if (!actor) 2667 return -EOPNOTSUPP; 2668 2669 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2670 return -EFAULT; 2671 2672 actor(dev, edata.data); 2673 return 0; 2674 } 2675 2676 static int ethtool_set_value(struct net_device *dev, char __user *useraddr, 2677 int (*actor)(struct net_device *, u32)) 2678 { 2679 struct ethtool_value edata; 2680 2681 if (!actor) 2682 return -EOPNOTSUPP; 2683 2684 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2685 return -EFAULT; 2686 2687 return actor(dev, edata.data); 2688 } 2689 2690 static int 2691 ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) 2692 { 2693 if (!dev->ethtool_ops->flash_device) { 2694 req->devlink = netdev_to_devlink_get(dev); 2695 return 0; 2696 } 2697 2698 return dev->ethtool_ops->flash_device(dev, &req->efl); 2699 } 2700 2701 static int ethtool_set_dump(struct net_device *dev, 2702 void __user *useraddr) 2703 { 2704 struct ethtool_dump dump; 2705 2706 if (!dev->ethtool_ops->set_dump) 2707 return -EOPNOTSUPP; 2708 2709 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2710 return -EFAULT; 2711 2712 return dev->ethtool_ops->set_dump(dev, &dump); 2713 } 2714 2715 static int ethtool_get_dump_flag(struct net_device *dev, 2716 void __user *useraddr) 2717 { 2718 int ret; 2719 struct ethtool_dump dump; 2720 const struct ethtool_ops *ops = dev->ethtool_ops; 2721 2722 if (!ops->get_dump_flag) 2723 return -EOPNOTSUPP; 2724 2725 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2726 return -EFAULT; 2727 2728 ret = ops->get_dump_flag(dev, &dump); 2729 if (ret) 2730 return ret; 2731 2732 if (copy_to_user(useraddr, &dump, sizeof(dump))) 2733 return -EFAULT; 2734 return 0; 2735 } 2736 2737 static int ethtool_get_dump_data(struct net_device *dev, 2738 void __user *useraddr) 2739 { 2740 int ret; 2741 __u32 len; 2742 struct ethtool_dump dump, tmp; 2743 const struct ethtool_ops *ops = dev->ethtool_ops; 2744 void *data = NULL; 2745 2746 if (!ops->get_dump_data || !ops->get_dump_flag) 2747 return -EOPNOTSUPP; 2748 2749 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2750 return -EFAULT; 2751 2752 memset(&tmp, 0, sizeof(tmp)); 2753 tmp.cmd = ETHTOOL_GET_DUMP_FLAG; 2754 ret = ops->get_dump_flag(dev, &tmp); 2755 if (ret) 2756 return ret; 2757 2758 len = min(tmp.len, dump.len); 2759 if (!len) 2760 return -EFAULT; 2761 2762 /* Don't ever let the driver think there's more space available 2763 * than it requested with .get_dump_flag(). 2764 */ 2765 dump.len = len; 2766 2767 /* Always allocate enough space to hold the whole thing so that the 2768 * driver does not need to check the length and bother with partial 2769 * dumping. 2770 */ 2771 data = vzalloc(tmp.len); 2772 if (!data) 2773 return -ENOMEM; 2774 ret = ops->get_dump_data(dev, &dump, data); 2775 if (ret) 2776 goto out; 2777 2778 /* There are two sane possibilities: 2779 * 1. The driver's .get_dump_data() does not touch dump.len. 2780 * 2. Or it may set dump.len to how much it really writes, which 2781 * should be tmp.len (or len if it can do a partial dump). 2782 * In any case respond to userspace with the actual length of data 2783 * it's receiving. 2784 */ 2785 WARN_ON(dump.len != len && dump.len != tmp.len); 2786 dump.len = len; 2787 2788 if (copy_to_user(useraddr, &dump, sizeof(dump))) { 2789 ret = -EFAULT; 2790 goto out; 2791 } 2792 useraddr += offsetof(struct ethtool_dump, data); 2793 if (copy_to_user(useraddr, data, len)) 2794 ret = -EFAULT; 2795 out: 2796 vfree(data); 2797 return ret; 2798 } 2799 2800 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) 2801 { 2802 struct kernel_ethtool_ts_info kernel_info; 2803 struct ethtool_ts_info info = {}; 2804 int err; 2805 2806 err = __ethtool_get_ts_info(dev, &kernel_info); 2807 if (err) 2808 return err; 2809 2810 info.cmd = kernel_info.cmd; 2811 info.so_timestamping = kernel_info.so_timestamping; 2812 info.phc_index = kernel_info.phc_index; 2813 info.tx_types = kernel_info.tx_types; 2814 info.rx_filters = kernel_info.rx_filters; 2815 2816 if (copy_to_user(useraddr, &info, sizeof(info))) 2817 return -EFAULT; 2818 2819 return 0; 2820 } 2821 2822 int ethtool_get_module_info_call(struct net_device *dev, 2823 struct ethtool_modinfo *modinfo) 2824 { 2825 const struct ethtool_ops *ops = dev->ethtool_ops; 2826 struct phy_device *phydev = dev->phydev; 2827 2828 if (dev->ethtool->module_fw_flash_in_progress) 2829 return -EBUSY; 2830 2831 if (dev->sfp_bus) 2832 return sfp_get_module_info(dev->sfp_bus, modinfo); 2833 2834 if (phydev && phydev->drv && phydev->drv->module_info) 2835 return phydev->drv->module_info(phydev, modinfo); 2836 2837 if (ops->get_module_info) 2838 return ops->get_module_info(dev, modinfo); 2839 2840 return -EOPNOTSUPP; 2841 } 2842 2843 static int ethtool_get_module_info(struct net_device *dev, 2844 void __user *useraddr) 2845 { 2846 int ret; 2847 struct ethtool_modinfo modinfo; 2848 2849 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) 2850 return -EFAULT; 2851 2852 ret = ethtool_get_module_info_call(dev, &modinfo); 2853 if (ret) 2854 return ret; 2855 2856 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) 2857 return -EFAULT; 2858 2859 return 0; 2860 } 2861 2862 int ethtool_get_module_eeprom_call(struct net_device *dev, 2863 struct ethtool_eeprom *ee, u8 *data) 2864 { 2865 const struct ethtool_ops *ops = dev->ethtool_ops; 2866 struct phy_device *phydev = dev->phydev; 2867 2868 if (dev->ethtool->module_fw_flash_in_progress) 2869 return -EBUSY; 2870 2871 if (dev->sfp_bus) 2872 return sfp_get_module_eeprom(dev->sfp_bus, ee, data); 2873 2874 if (phydev && phydev->drv && phydev->drv->module_eeprom) 2875 return phydev->drv->module_eeprom(phydev, ee, data); 2876 2877 if (ops->get_module_eeprom) 2878 return ops->get_module_eeprom(dev, ee, data); 2879 2880 return -EOPNOTSUPP; 2881 } 2882 2883 static int ethtool_get_module_eeprom(struct net_device *dev, 2884 void __user *useraddr) 2885 { 2886 int ret; 2887 struct ethtool_modinfo modinfo; 2888 2889 ret = ethtool_get_module_info_call(dev, &modinfo); 2890 if (ret) 2891 return ret; 2892 2893 return ethtool_get_any_eeprom(dev, useraddr, 2894 ethtool_get_module_eeprom_call, 2895 modinfo.eeprom_len); 2896 } 2897 2898 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) 2899 { 2900 switch (tuna->id) { 2901 case ETHTOOL_RX_COPYBREAK: 2902 case ETHTOOL_TX_COPYBREAK: 2903 case ETHTOOL_TX_COPYBREAK_BUF_SIZE: 2904 if (tuna->len != sizeof(u32) || 2905 tuna->type_id != ETHTOOL_TUNABLE_U32) 2906 return -EINVAL; 2907 break; 2908 case ETHTOOL_PFC_PREVENTION_TOUT: 2909 if (tuna->len != sizeof(u16) || 2910 tuna->type_id != ETHTOOL_TUNABLE_U16) 2911 return -EINVAL; 2912 break; 2913 default: 2914 return -EINVAL; 2915 } 2916 2917 return 0; 2918 } 2919 2920 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) 2921 { 2922 int ret; 2923 struct ethtool_tunable tuna; 2924 const struct ethtool_ops *ops = dev->ethtool_ops; 2925 void *data; 2926 2927 if (!ops->get_tunable) 2928 return -EOPNOTSUPP; 2929 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2930 return -EFAULT; 2931 ret = ethtool_tunable_valid(&tuna); 2932 if (ret) 2933 return ret; 2934 data = kzalloc(tuna.len, GFP_USER); 2935 if (!data) 2936 return -ENOMEM; 2937 ret = ops->get_tunable(dev, &tuna, data); 2938 if (ret) 2939 goto out; 2940 useraddr += sizeof(tuna); 2941 ret = -EFAULT; 2942 if (copy_to_user(useraddr, data, tuna.len)) 2943 goto out; 2944 ret = 0; 2945 2946 out: 2947 kfree(data); 2948 return ret; 2949 } 2950 2951 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) 2952 { 2953 int ret; 2954 struct ethtool_tunable tuna; 2955 const struct ethtool_ops *ops = dev->ethtool_ops; 2956 void *data; 2957 2958 if (!ops->set_tunable) 2959 return -EOPNOTSUPP; 2960 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2961 return -EFAULT; 2962 ret = ethtool_tunable_valid(&tuna); 2963 if (ret) 2964 return ret; 2965 useraddr += sizeof(tuna); 2966 data = memdup_user(useraddr, tuna.len); 2967 if (IS_ERR(data)) 2968 return PTR_ERR(data); 2969 ret = ops->set_tunable(dev, &tuna, data); 2970 2971 kfree(data); 2972 return ret; 2973 } 2974 2975 static noinline_for_stack int 2976 ethtool_get_per_queue_coalesce(struct net_device *dev, 2977 void __user *useraddr, 2978 struct ethtool_per_queue_op *per_queue_opt) 2979 { 2980 u32 bit; 2981 int ret; 2982 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2983 2984 if (!dev->ethtool_ops->get_per_queue_coalesce) 2985 return -EOPNOTSUPP; 2986 2987 useraddr += sizeof(*per_queue_opt); 2988 2989 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, 2990 MAX_NUM_QUEUE); 2991 2992 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2993 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2994 2995 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); 2996 if (ret != 0) 2997 return ret; 2998 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2999 return -EFAULT; 3000 useraddr += sizeof(coalesce); 3001 } 3002 3003 return 0; 3004 } 3005 3006 static noinline_for_stack int 3007 ethtool_set_per_queue_coalesce(struct net_device *dev, 3008 void __user *useraddr, 3009 struct ethtool_per_queue_op *per_queue_opt) 3010 { 3011 u32 bit; 3012 int i, ret = 0; 3013 int n_queue; 3014 struct ethtool_coalesce *backup = NULL, *tmp = NULL; 3015 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 3016 3017 if ((!dev->ethtool_ops->set_per_queue_coalesce) || 3018 (!dev->ethtool_ops->get_per_queue_coalesce)) 3019 return -EOPNOTSUPP; 3020 3021 useraddr += sizeof(*per_queue_opt); 3022 3023 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); 3024 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); 3025 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); 3026 if (!backup) 3027 return -ENOMEM; 3028 3029 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 3030 struct ethtool_coalesce coalesce; 3031 3032 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); 3033 if (ret != 0) 3034 goto roll_back; 3035 3036 tmp++; 3037 3038 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { 3039 ret = -EFAULT; 3040 goto roll_back; 3041 } 3042 3043 if (!ethtool_set_coalesce_supported(dev, &coalesce)) { 3044 ret = -EOPNOTSUPP; 3045 goto roll_back; 3046 } 3047 3048 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); 3049 if (ret != 0) 3050 goto roll_back; 3051 3052 useraddr += sizeof(coalesce); 3053 } 3054 3055 roll_back: 3056 if (ret != 0) { 3057 tmp = backup; 3058 for_each_set_bit(i, queue_mask, bit) { 3059 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); 3060 tmp++; 3061 } 3062 } 3063 kfree(backup); 3064 3065 return ret; 3066 } 3067 3068 static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, 3069 void __user *useraddr, u32 sub_cmd) 3070 { 3071 struct ethtool_per_queue_op per_queue_opt; 3072 3073 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) 3074 return -EFAULT; 3075 3076 if (per_queue_opt.sub_command != sub_cmd) 3077 return -EINVAL; 3078 3079 switch (per_queue_opt.sub_command) { 3080 case ETHTOOL_GCOALESCE: 3081 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); 3082 case ETHTOOL_SCOALESCE: 3083 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); 3084 default: 3085 return -EOPNOTSUPP; 3086 } 3087 } 3088 3089 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) 3090 { 3091 switch (tuna->id) { 3092 case ETHTOOL_PHY_DOWNSHIFT: 3093 case ETHTOOL_PHY_FAST_LINK_DOWN: 3094 if (tuna->len != sizeof(u8) || 3095 tuna->type_id != ETHTOOL_TUNABLE_U8) 3096 return -EINVAL; 3097 break; 3098 case ETHTOOL_PHY_EDPD: 3099 if (tuna->len != sizeof(u16) || 3100 tuna->type_id != ETHTOOL_TUNABLE_U16) 3101 return -EINVAL; 3102 break; 3103 default: 3104 return -EINVAL; 3105 } 3106 3107 return 0; 3108 } 3109 3110 static int get_phy_tunable(struct net_device *dev, void __user *useraddr) 3111 { 3112 struct phy_device *phydev = dev->phydev; 3113 struct ethtool_tunable tuna; 3114 bool phy_drv_tunable; 3115 void *data; 3116 int ret; 3117 3118 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 3119 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) 3120 return -EOPNOTSUPP; 3121 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 3122 return -EFAULT; 3123 ret = ethtool_phy_tunable_valid(&tuna); 3124 if (ret) 3125 return ret; 3126 data = kzalloc(tuna.len, GFP_USER); 3127 if (!data) 3128 return -ENOMEM; 3129 if (phy_drv_tunable) { 3130 mutex_lock(&phydev->lock); 3131 ret = phydev->drv->get_tunable(phydev, &tuna, data); 3132 mutex_unlock(&phydev->lock); 3133 } else { 3134 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); 3135 } 3136 if (ret) 3137 goto out; 3138 useraddr += sizeof(tuna); 3139 ret = -EFAULT; 3140 if (copy_to_user(useraddr, data, tuna.len)) 3141 goto out; 3142 ret = 0; 3143 3144 out: 3145 kfree(data); 3146 return ret; 3147 } 3148 3149 static int set_phy_tunable(struct net_device *dev, void __user *useraddr) 3150 { 3151 struct phy_device *phydev = dev->phydev; 3152 struct ethtool_tunable tuna; 3153 bool phy_drv_tunable; 3154 void *data; 3155 int ret; 3156 3157 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 3158 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) 3159 return -EOPNOTSUPP; 3160 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 3161 return -EFAULT; 3162 ret = ethtool_phy_tunable_valid(&tuna); 3163 if (ret) 3164 return ret; 3165 useraddr += sizeof(tuna); 3166 data = memdup_user(useraddr, tuna.len); 3167 if (IS_ERR(data)) 3168 return PTR_ERR(data); 3169 if (phy_drv_tunable) { 3170 mutex_lock(&phydev->lock); 3171 ret = phydev->drv->set_tunable(phydev, &tuna, data); 3172 mutex_unlock(&phydev->lock); 3173 } else { 3174 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); 3175 } 3176 3177 kfree(data); 3178 return ret; 3179 } 3180 3181 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) 3182 { 3183 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; 3184 int rc; 3185 3186 if (!dev->ethtool_ops->get_fecparam) 3187 return -EOPNOTSUPP; 3188 3189 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); 3190 if (rc) 3191 return rc; 3192 3193 if (WARN_ON_ONCE(fecparam.reserved)) 3194 fecparam.reserved = 0; 3195 3196 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) 3197 return -EFAULT; 3198 return 0; 3199 } 3200 3201 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) 3202 { 3203 struct ethtool_fecparam fecparam; 3204 3205 if (!dev->ethtool_ops->set_fecparam) 3206 return -EOPNOTSUPP; 3207 3208 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) 3209 return -EFAULT; 3210 3211 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) 3212 return -EINVAL; 3213 3214 fecparam.active_fec = 0; 3215 fecparam.reserved = 0; 3216 3217 return dev->ethtool_ops->set_fecparam(dev, &fecparam); 3218 } 3219 3220 /* The main entry point in this file. Called from net/core/dev_ioctl.c */ 3221 3222 static int 3223 __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, 3224 u32 ethcmd, struct ethtool_devlink_compat *devlink_state) 3225 { 3226 struct net_device *dev; 3227 u32 sub_cmd; 3228 int rc; 3229 netdev_features_t old_features; 3230 3231 dev = __dev_get_by_name(net, ifr->ifr_name); 3232 if (!dev) 3233 return -ENODEV; 3234 3235 if (ethcmd == ETHTOOL_PERQUEUE) { 3236 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) 3237 return -EFAULT; 3238 } else { 3239 sub_cmd = ethcmd; 3240 } 3241 /* Allow some commands to be done by anyone */ 3242 switch (sub_cmd) { 3243 case ETHTOOL_GSET: 3244 case ETHTOOL_GDRVINFO: 3245 case ETHTOOL_GMSGLVL: 3246 case ETHTOOL_GLINK: 3247 case ETHTOOL_GCOALESCE: 3248 case ETHTOOL_GRINGPARAM: 3249 case ETHTOOL_GPAUSEPARAM: 3250 case ETHTOOL_GRXCSUM: 3251 case ETHTOOL_GTXCSUM: 3252 case ETHTOOL_GSG: 3253 case ETHTOOL_GSSET_INFO: 3254 case ETHTOOL_GSTRINGS: 3255 case ETHTOOL_GSTATS: 3256 case ETHTOOL_GPHYSTATS: 3257 case ETHTOOL_GTSO: 3258 case ETHTOOL_GPERMADDR: 3259 case ETHTOOL_GUFO: 3260 case ETHTOOL_GGSO: 3261 case ETHTOOL_GGRO: 3262 case ETHTOOL_GFLAGS: 3263 case ETHTOOL_GPFLAGS: 3264 case ETHTOOL_GRXFH: 3265 case ETHTOOL_GRXRINGS: 3266 case ETHTOOL_GRXCLSRLCNT: 3267 case ETHTOOL_GRXCLSRULE: 3268 case ETHTOOL_GRXCLSRLALL: 3269 case ETHTOOL_GRXFHINDIR: 3270 case ETHTOOL_GRSSH: 3271 case ETHTOOL_GFEATURES: 3272 case ETHTOOL_GCHANNELS: 3273 case ETHTOOL_GET_TS_INFO: 3274 case ETHTOOL_GEEE: 3275 case ETHTOOL_GTUNABLE: 3276 case ETHTOOL_PHY_GTUNABLE: 3277 case ETHTOOL_GLINKSETTINGS: 3278 case ETHTOOL_GFECPARAM: 3279 break; 3280 default: 3281 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 3282 return -EPERM; 3283 } 3284 3285 netdev_lock_ops(dev); 3286 if (dev->dev.parent) 3287 pm_runtime_get_sync(dev->dev.parent); 3288 3289 if (!netif_device_present(dev)) { 3290 rc = -ENODEV; 3291 goto out; 3292 } 3293 3294 if (dev->ethtool_ops->begin) { 3295 rc = dev->ethtool_ops->begin(dev); 3296 if (rc < 0) 3297 goto out; 3298 } 3299 old_features = dev->features; 3300 3301 switch (ethcmd) { 3302 case ETHTOOL_GSET: 3303 rc = ethtool_get_settings(dev, useraddr); 3304 break; 3305 case ETHTOOL_SSET: 3306 rc = ethtool_set_settings(dev, useraddr); 3307 break; 3308 case ETHTOOL_GDRVINFO: 3309 rc = ethtool_get_drvinfo(dev, devlink_state); 3310 break; 3311 case ETHTOOL_GREGS: 3312 rc = ethtool_get_regs(dev, useraddr); 3313 break; 3314 case ETHTOOL_GWOL: 3315 rc = ethtool_get_wol(dev, useraddr); 3316 break; 3317 case ETHTOOL_SWOL: 3318 rc = ethtool_set_wol(dev, useraddr); 3319 break; 3320 case ETHTOOL_GMSGLVL: 3321 rc = ethtool_get_value(dev, useraddr, ethcmd, 3322 dev->ethtool_ops->get_msglevel); 3323 break; 3324 case ETHTOOL_SMSGLVL: 3325 rc = ethtool_set_value_void(dev, useraddr, 3326 dev->ethtool_ops->set_msglevel); 3327 if (!rc) 3328 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF); 3329 break; 3330 case ETHTOOL_GEEE: 3331 rc = ethtool_get_eee(dev, useraddr); 3332 break; 3333 case ETHTOOL_SEEE: 3334 rc = ethtool_set_eee(dev, useraddr); 3335 break; 3336 case ETHTOOL_NWAY_RST: 3337 rc = ethtool_nway_reset(dev); 3338 break; 3339 case ETHTOOL_GLINK: 3340 rc = ethtool_get_link(dev, useraddr); 3341 break; 3342 case ETHTOOL_GEEPROM: 3343 rc = ethtool_get_eeprom(dev, useraddr); 3344 break; 3345 case ETHTOOL_SEEPROM: 3346 rc = ethtool_set_eeprom(dev, useraddr); 3347 break; 3348 case ETHTOOL_GCOALESCE: 3349 rc = ethtool_get_coalesce(dev, useraddr); 3350 break; 3351 case ETHTOOL_SCOALESCE: 3352 rc = ethtool_set_coalesce(dev, useraddr); 3353 break; 3354 case ETHTOOL_GRINGPARAM: 3355 rc = ethtool_get_ringparam(dev, useraddr); 3356 break; 3357 case ETHTOOL_SRINGPARAM: 3358 rc = ethtool_set_ringparam(dev, useraddr); 3359 break; 3360 case ETHTOOL_GPAUSEPARAM: 3361 rc = ethtool_get_pauseparam(dev, useraddr); 3362 break; 3363 case ETHTOOL_SPAUSEPARAM: 3364 rc = ethtool_set_pauseparam(dev, useraddr); 3365 break; 3366 case ETHTOOL_TEST: 3367 rc = ethtool_self_test(dev, useraddr); 3368 break; 3369 case ETHTOOL_GSTRINGS: 3370 rc = ethtool_get_strings(dev, useraddr); 3371 break; 3372 case ETHTOOL_PHYS_ID: 3373 rc = ethtool_phys_id(dev, useraddr); 3374 break; 3375 case ETHTOOL_GSTATS: 3376 rc = ethtool_get_stats(dev, useraddr); 3377 break; 3378 case ETHTOOL_GPERMADDR: 3379 rc = ethtool_get_perm_addr(dev, useraddr); 3380 break; 3381 case ETHTOOL_GFLAGS: 3382 rc = ethtool_get_value(dev, useraddr, ethcmd, 3383 __ethtool_get_flags); 3384 break; 3385 case ETHTOOL_SFLAGS: 3386 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); 3387 break; 3388 case ETHTOOL_GPFLAGS: 3389 rc = ethtool_get_value(dev, useraddr, ethcmd, 3390 dev->ethtool_ops->get_priv_flags); 3391 if (!rc) 3392 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF); 3393 break; 3394 case ETHTOOL_SPFLAGS: 3395 rc = ethtool_set_value(dev, useraddr, 3396 dev->ethtool_ops->set_priv_flags); 3397 break; 3398 case ETHTOOL_GRXFH: 3399 rc = ethtool_get_rxfh_fields(dev, ethcmd, useraddr); 3400 break; 3401 case ETHTOOL_SRXFH: 3402 rc = ethtool_set_rxfh_fields(dev, ethcmd, useraddr); 3403 break; 3404 case ETHTOOL_GRXRINGS: 3405 rc = ethtool_get_rxrings(dev, ethcmd, useraddr); 3406 break; 3407 case ETHTOOL_GRXCLSRLCNT: 3408 case ETHTOOL_GRXCLSRULE: 3409 case ETHTOOL_GRXCLSRLALL: 3410 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); 3411 break; 3412 case ETHTOOL_SRXCLSRLDEL: 3413 case ETHTOOL_SRXCLSRLINS: 3414 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); 3415 break; 3416 case ETHTOOL_FLASHDEV: 3417 rc = ethtool_flash_device(dev, devlink_state); 3418 break; 3419 case ETHTOOL_RESET: 3420 rc = ethtool_reset(dev, useraddr); 3421 break; 3422 case ETHTOOL_GSSET_INFO: 3423 rc = ethtool_get_sset_info(dev, useraddr); 3424 break; 3425 case ETHTOOL_GRXFHINDIR: 3426 rc = ethtool_get_rxfh_indir(dev, useraddr); 3427 break; 3428 case ETHTOOL_SRXFHINDIR: 3429 rc = ethtool_set_rxfh_indir(dev, useraddr); 3430 break; 3431 case ETHTOOL_GRSSH: 3432 rc = ethtool_get_rxfh(dev, useraddr); 3433 break; 3434 case ETHTOOL_SRSSH: 3435 rc = ethtool_set_rxfh(dev, useraddr); 3436 break; 3437 case ETHTOOL_GFEATURES: 3438 rc = ethtool_get_features(dev, useraddr); 3439 break; 3440 case ETHTOOL_SFEATURES: 3441 rc = ethtool_set_features(dev, useraddr); 3442 break; 3443 case ETHTOOL_GTXCSUM: 3444 case ETHTOOL_GRXCSUM: 3445 case ETHTOOL_GSG: 3446 case ETHTOOL_GTSO: 3447 case ETHTOOL_GGSO: 3448 case ETHTOOL_GGRO: 3449 rc = ethtool_get_one_feature(dev, useraddr, ethcmd); 3450 break; 3451 case ETHTOOL_STXCSUM: 3452 case ETHTOOL_SRXCSUM: 3453 case ETHTOOL_SSG: 3454 case ETHTOOL_STSO: 3455 case ETHTOOL_SGSO: 3456 case ETHTOOL_SGRO: 3457 rc = ethtool_set_one_feature(dev, useraddr, ethcmd); 3458 break; 3459 case ETHTOOL_GCHANNELS: 3460 rc = ethtool_get_channels(dev, useraddr); 3461 break; 3462 case ETHTOOL_SCHANNELS: 3463 rc = ethtool_set_channels(dev, useraddr); 3464 break; 3465 case ETHTOOL_SET_DUMP: 3466 rc = ethtool_set_dump(dev, useraddr); 3467 break; 3468 case ETHTOOL_GET_DUMP_FLAG: 3469 rc = ethtool_get_dump_flag(dev, useraddr); 3470 break; 3471 case ETHTOOL_GET_DUMP_DATA: 3472 rc = ethtool_get_dump_data(dev, useraddr); 3473 break; 3474 case ETHTOOL_GET_TS_INFO: 3475 rc = ethtool_get_ts_info(dev, useraddr); 3476 break; 3477 case ETHTOOL_GMODULEINFO: 3478 rc = ethtool_get_module_info(dev, useraddr); 3479 break; 3480 case ETHTOOL_GMODULEEEPROM: 3481 rc = ethtool_get_module_eeprom(dev, useraddr); 3482 break; 3483 case ETHTOOL_GTUNABLE: 3484 rc = ethtool_get_tunable(dev, useraddr); 3485 break; 3486 case ETHTOOL_STUNABLE: 3487 rc = ethtool_set_tunable(dev, useraddr); 3488 break; 3489 case ETHTOOL_GPHYSTATS: 3490 rc = ethtool_get_phy_stats(dev, useraddr); 3491 break; 3492 case ETHTOOL_PERQUEUE: 3493 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); 3494 break; 3495 case ETHTOOL_GLINKSETTINGS: 3496 rc = ethtool_get_link_ksettings(dev, useraddr); 3497 break; 3498 case ETHTOOL_SLINKSETTINGS: 3499 rc = ethtool_set_link_ksettings(dev, useraddr); 3500 break; 3501 case ETHTOOL_PHY_GTUNABLE: 3502 rc = get_phy_tunable(dev, useraddr); 3503 break; 3504 case ETHTOOL_PHY_STUNABLE: 3505 rc = set_phy_tunable(dev, useraddr); 3506 break; 3507 case ETHTOOL_GFECPARAM: 3508 rc = ethtool_get_fecparam(dev, useraddr); 3509 break; 3510 case ETHTOOL_SFECPARAM: 3511 rc = ethtool_set_fecparam(dev, useraddr); 3512 break; 3513 default: 3514 rc = -EOPNOTSUPP; 3515 } 3516 3517 if (dev->ethtool_ops->complete) 3518 dev->ethtool_ops->complete(dev); 3519 3520 if (old_features != dev->features) 3521 netdev_features_change(dev); 3522 out: 3523 if (dev->dev.parent) 3524 pm_runtime_put(dev->dev.parent); 3525 netdev_unlock_ops(dev); 3526 3527 return rc; 3528 } 3529 3530 int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) 3531 { 3532 struct ethtool_devlink_compat *state; 3533 u32 ethcmd; 3534 int rc; 3535 3536 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) 3537 return -EFAULT; 3538 3539 state = kzalloc(sizeof(*state), GFP_KERNEL); 3540 if (!state) 3541 return -ENOMEM; 3542 3543 switch (ethcmd) { 3544 case ETHTOOL_FLASHDEV: 3545 if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { 3546 rc = -EFAULT; 3547 goto exit_free; 3548 } 3549 state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; 3550 break; 3551 } 3552 3553 rtnl_lock(); 3554 rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); 3555 rtnl_unlock(); 3556 if (rc) 3557 goto exit_free; 3558 3559 switch (ethcmd) { 3560 case ETHTOOL_FLASHDEV: 3561 if (state->devlink) 3562 rc = devlink_compat_flash_update(state->devlink, 3563 state->efl.data); 3564 break; 3565 case ETHTOOL_GDRVINFO: 3566 if (state->devlink) 3567 devlink_compat_running_version(state->devlink, 3568 state->info.fw_version, 3569 sizeof(state->info.fw_version)); 3570 if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { 3571 rc = -EFAULT; 3572 goto exit_free; 3573 } 3574 break; 3575 } 3576 3577 exit_free: 3578 if (state->devlink) 3579 devlink_put(state->devlink); 3580 kfree(state); 3581 return rc; 3582 } 3583 3584 struct ethtool_rx_flow_key { 3585 struct flow_dissector_key_basic basic; 3586 union { 3587 struct flow_dissector_key_ipv4_addrs ipv4; 3588 struct flow_dissector_key_ipv6_addrs ipv6; 3589 }; 3590 struct flow_dissector_key_ports tp; 3591 struct flow_dissector_key_ip ip; 3592 struct flow_dissector_key_vlan vlan; 3593 struct flow_dissector_key_eth_addrs eth_addrs; 3594 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ 3595 3596 struct ethtool_rx_flow_match { 3597 struct flow_dissector dissector; 3598 struct ethtool_rx_flow_key key; 3599 struct ethtool_rx_flow_key mask; 3600 }; 3601 3602 struct ethtool_rx_flow_rule * 3603 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) 3604 { 3605 const struct ethtool_rx_flow_spec *fs = input->fs; 3606 struct ethtool_rx_flow_match *match; 3607 struct ethtool_rx_flow_rule *flow; 3608 struct flow_action_entry *act; 3609 3610 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + 3611 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); 3612 if (!flow) 3613 return ERR_PTR(-ENOMEM); 3614 3615 /* ethtool_rx supports only one single action per rule. */ 3616 flow->rule = flow_rule_alloc(1); 3617 if (!flow->rule) { 3618 kfree(flow); 3619 return ERR_PTR(-ENOMEM); 3620 } 3621 3622 match = (struct ethtool_rx_flow_match *)flow->priv; 3623 flow->rule->match.dissector = &match->dissector; 3624 flow->rule->match.mask = &match->mask; 3625 flow->rule->match.key = &match->key; 3626 3627 match->mask.basic.n_proto = htons(0xffff); 3628 3629 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3630 case ETHER_FLOW: { 3631 const struct ethhdr *ether_spec, *ether_m_spec; 3632 3633 ether_spec = &fs->h_u.ether_spec; 3634 ether_m_spec = &fs->m_u.ether_spec; 3635 3636 if (!is_zero_ether_addr(ether_m_spec->h_source)) { 3637 ether_addr_copy(match->key.eth_addrs.src, 3638 ether_spec->h_source); 3639 ether_addr_copy(match->mask.eth_addrs.src, 3640 ether_m_spec->h_source); 3641 } 3642 if (!is_zero_ether_addr(ether_m_spec->h_dest)) { 3643 ether_addr_copy(match->key.eth_addrs.dst, 3644 ether_spec->h_dest); 3645 ether_addr_copy(match->mask.eth_addrs.dst, 3646 ether_m_spec->h_dest); 3647 } 3648 if (ether_m_spec->h_proto) { 3649 match->key.basic.n_proto = ether_spec->h_proto; 3650 match->mask.basic.n_proto = ether_m_spec->h_proto; 3651 } 3652 } 3653 break; 3654 case TCP_V4_FLOW: 3655 case UDP_V4_FLOW: { 3656 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; 3657 3658 match->key.basic.n_proto = htons(ETH_P_IP); 3659 3660 v4_spec = &fs->h_u.tcp_ip4_spec; 3661 v4_m_spec = &fs->m_u.tcp_ip4_spec; 3662 3663 if (v4_m_spec->ip4src) { 3664 match->key.ipv4.src = v4_spec->ip4src; 3665 match->mask.ipv4.src = v4_m_spec->ip4src; 3666 } 3667 if (v4_m_spec->ip4dst) { 3668 match->key.ipv4.dst = v4_spec->ip4dst; 3669 match->mask.ipv4.dst = v4_m_spec->ip4dst; 3670 } 3671 if (v4_m_spec->ip4src || 3672 v4_m_spec->ip4dst) { 3673 match->dissector.used_keys |= 3674 BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS); 3675 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = 3676 offsetof(struct ethtool_rx_flow_key, ipv4); 3677 } 3678 if (v4_m_spec->psrc) { 3679 match->key.tp.src = v4_spec->psrc; 3680 match->mask.tp.src = v4_m_spec->psrc; 3681 } 3682 if (v4_m_spec->pdst) { 3683 match->key.tp.dst = v4_spec->pdst; 3684 match->mask.tp.dst = v4_m_spec->pdst; 3685 } 3686 if (v4_m_spec->psrc || 3687 v4_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 (v4_m_spec->tos) { 3694 match->key.ip.tos = v4_spec->tos; 3695 match->mask.ip.tos = v4_m_spec->tos; 3696 match->dissector.used_keys |= 3697 BIT(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 case TCP_V6_FLOW: 3704 case UDP_V6_FLOW: { 3705 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; 3706 3707 match->key.basic.n_proto = htons(ETH_P_IPV6); 3708 3709 v6_spec = &fs->h_u.tcp_ip6_spec; 3710 v6_m_spec = &fs->m_u.tcp_ip6_spec; 3711 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) { 3712 memcpy(&match->key.ipv6.src, v6_spec->ip6src, 3713 sizeof(match->key.ipv6.src)); 3714 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, 3715 sizeof(match->mask.ipv6.src)); 3716 } 3717 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3718 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, 3719 sizeof(match->key.ipv6.dst)); 3720 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, 3721 sizeof(match->mask.ipv6.dst)); 3722 } 3723 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) || 3724 !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3725 match->dissector.used_keys |= 3726 BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS); 3727 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = 3728 offsetof(struct ethtool_rx_flow_key, ipv6); 3729 } 3730 if (v6_m_spec->psrc) { 3731 match->key.tp.src = v6_spec->psrc; 3732 match->mask.tp.src = v6_m_spec->psrc; 3733 } 3734 if (v6_m_spec->pdst) { 3735 match->key.tp.dst = v6_spec->pdst; 3736 match->mask.tp.dst = v6_m_spec->pdst; 3737 } 3738 if (v6_m_spec->psrc || 3739 v6_m_spec->pdst) { 3740 match->dissector.used_keys |= 3741 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3742 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3743 offsetof(struct ethtool_rx_flow_key, tp); 3744 } 3745 if (v6_m_spec->tclass) { 3746 match->key.ip.tos = v6_spec->tclass; 3747 match->mask.ip.tos = v6_m_spec->tclass; 3748 match->dissector.used_keys |= 3749 BIT_ULL(FLOW_DISSECTOR_KEY_IP); 3750 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3751 offsetof(struct ethtool_rx_flow_key, ip); 3752 } 3753 } 3754 break; 3755 default: 3756 ethtool_rx_flow_rule_destroy(flow); 3757 return ERR_PTR(-EINVAL); 3758 } 3759 3760 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3761 case TCP_V4_FLOW: 3762 case TCP_V6_FLOW: 3763 match->key.basic.ip_proto = IPPROTO_TCP; 3764 match->mask.basic.ip_proto = 0xff; 3765 break; 3766 case UDP_V4_FLOW: 3767 case UDP_V6_FLOW: 3768 match->key.basic.ip_proto = IPPROTO_UDP; 3769 match->mask.basic.ip_proto = 0xff; 3770 break; 3771 } 3772 3773 match->dissector.used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_BASIC); 3774 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = 3775 offsetof(struct ethtool_rx_flow_key, basic); 3776 3777 if (fs->flow_type & FLOW_EXT) { 3778 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3779 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3780 3781 if (ext_m_spec->vlan_etype) { 3782 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; 3783 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; 3784 } 3785 3786 if (ext_m_spec->vlan_tci) { 3787 match->key.vlan.vlan_id = 3788 ntohs(ext_h_spec->vlan_tci) & 0x0fff; 3789 match->mask.vlan.vlan_id = 3790 ntohs(ext_m_spec->vlan_tci) & 0x0fff; 3791 3792 match->key.vlan.vlan_dei = 3793 !!(ext_h_spec->vlan_tci & htons(0x1000)); 3794 match->mask.vlan.vlan_dei = 3795 !!(ext_m_spec->vlan_tci & htons(0x1000)); 3796 3797 match->key.vlan.vlan_priority = 3798 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; 3799 match->mask.vlan.vlan_priority = 3800 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; 3801 } 3802 3803 if (ext_m_spec->vlan_etype || 3804 ext_m_spec->vlan_tci) { 3805 match->dissector.used_keys |= 3806 BIT_ULL(FLOW_DISSECTOR_KEY_VLAN); 3807 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = 3808 offsetof(struct ethtool_rx_flow_key, vlan); 3809 } 3810 } 3811 if (fs->flow_type & FLOW_MAC_EXT) { 3812 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3813 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3814 3815 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, 3816 ETH_ALEN); 3817 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, 3818 ETH_ALEN); 3819 3820 match->dissector.used_keys |= 3821 BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS); 3822 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = 3823 offsetof(struct ethtool_rx_flow_key, eth_addrs); 3824 } 3825 3826 act = &flow->rule->action.entries[0]; 3827 switch (fs->ring_cookie) { 3828 case RX_CLS_FLOW_DISC: 3829 act->id = FLOW_ACTION_DROP; 3830 break; 3831 case RX_CLS_FLOW_WAKE: 3832 act->id = FLOW_ACTION_WAKE; 3833 break; 3834 default: 3835 act->id = FLOW_ACTION_QUEUE; 3836 if (fs->flow_type & FLOW_RSS) 3837 act->queue.ctx = input->rss_ctx; 3838 3839 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); 3840 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); 3841 break; 3842 } 3843 3844 return flow; 3845 } 3846 EXPORT_SYMBOL(ethtool_rx_flow_rule_create); 3847 3848 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) 3849 { 3850 kfree(flow->rule); 3851 kfree(flow); 3852 } 3853 EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); 3854