1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * net/core/ethtool.c - Ethtool ioctl handler 4 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx> 5 * 6 * This file is where we call all the ethtool_ops commands to get 7 * the information ethtool needs. 8 */ 9 10 #include <linux/compat.h> 11 #include <linux/etherdevice.h> 12 #include <linux/module.h> 13 #include <linux/types.h> 14 #include <linux/capability.h> 15 #include <linux/errno.h> 16 #include <linux/ethtool.h> 17 #include <linux/netdevice.h> 18 #include <linux/net_tstamp.h> 19 #include <linux/phy.h> 20 #include <linux/bitops.h> 21 #include <linux/uaccess.h> 22 #include <linux/vmalloc.h> 23 #include <linux/sfp.h> 24 #include <linux/slab.h> 25 #include <linux/rtnetlink.h> 26 #include <linux/sched/signal.h> 27 #include <linux/net.h> 28 #include <linux/pm_runtime.h> 29 #include <linux/utsname.h> 30 #include <net/devlink.h> 31 #include <net/ipv6.h> 32 #include <net/xdp_sock_drv.h> 33 #include <net/flow_offload.h> 34 #include <net/netdev_lock.h> 35 #include <linux/ethtool_netlink.h> 36 #include "common.h" 37 38 /* State held across locks and calls for commands which have devlink fallback */ 39 struct ethtool_devlink_compat { 40 struct devlink *devlink; 41 union { 42 struct ethtool_flash efl; 43 struct ethtool_drvinfo info; 44 }; 45 }; 46 47 static struct devlink *netdev_to_devlink_get(struct net_device *dev) 48 { 49 if (!dev->devlink_port) 50 return NULL; 51 return devlink_try_get(dev->devlink_port->devlink); 52 } 53 54 /* 55 * Some useful ethtool_ops methods that're device independent. 56 * If we find that all drivers want to do the same thing here, 57 * we can turn these into dev_() function calls. 58 */ 59 60 u32 ethtool_op_get_link(struct net_device *dev) 61 { 62 /* Synchronize carrier state with link watch, see also rtnl_getlink() */ 63 __linkwatch_sync_dev(dev); 64 65 return netif_carrier_ok(dev) ? 1 : 0; 66 } 67 EXPORT_SYMBOL(ethtool_op_get_link); 68 69 int ethtool_op_get_ts_info(struct net_device *dev, 70 struct kernel_ethtool_ts_info *info) 71 { 72 info->so_timestamping = 73 SOF_TIMESTAMPING_TX_SOFTWARE | 74 SOF_TIMESTAMPING_RX_SOFTWARE | 75 SOF_TIMESTAMPING_SOFTWARE; 76 info->phc_index = -1; 77 return 0; 78 } 79 EXPORT_SYMBOL(ethtool_op_get_ts_info); 80 81 /* Handlers for each ethtool command */ 82 83 static int ethtool_get_features(struct net_device *dev, void __user *useraddr) 84 { 85 struct ethtool_gfeatures cmd = { 86 .cmd = ETHTOOL_GFEATURES, 87 .size = ETHTOOL_DEV_FEATURE_WORDS, 88 }; 89 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 90 u32 __user *sizeaddr; 91 u32 copy_size; 92 int i; 93 94 /* in case feature bits run out again */ 95 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); 96 97 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 98 features[i].available = (u32)(dev->hw_features >> (32 * i)); 99 features[i].requested = (u32)(dev->wanted_features >> (32 * i)); 100 features[i].active = (u32)(dev->features >> (32 * i)); 101 features[i].never_changed = 102 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); 103 } 104 105 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); 106 if (get_user(copy_size, sizeaddr)) 107 return -EFAULT; 108 109 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) 110 copy_size = ETHTOOL_DEV_FEATURE_WORDS; 111 112 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 113 return -EFAULT; 114 useraddr += sizeof(cmd); 115 if (copy_to_user(useraddr, features, 116 array_size(copy_size, sizeof(*features)))) 117 return -EFAULT; 118 119 return 0; 120 } 121 122 static int ethtool_set_features(struct net_device *dev, void __user *useraddr) 123 { 124 struct ethtool_sfeatures cmd; 125 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 126 netdev_features_t wanted = 0, valid = 0; 127 int i, ret = 0; 128 129 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 130 return -EFAULT; 131 useraddr += sizeof(cmd); 132 133 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) 134 return -EINVAL; 135 136 if (copy_from_user(features, useraddr, sizeof(features))) 137 return -EFAULT; 138 139 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 140 valid |= (netdev_features_t)features[i].valid << (32 * i); 141 wanted |= (netdev_features_t)features[i].requested << (32 * i); 142 } 143 144 if (valid & ~NETIF_F_ETHTOOL_BITS) 145 return -EINVAL; 146 147 if (valid & ~dev->hw_features) { 148 valid &= dev->hw_features; 149 ret |= ETHTOOL_F_UNSUPPORTED; 150 } 151 152 dev->wanted_features &= ~valid; 153 dev->wanted_features |= wanted & valid; 154 __netdev_update_features(dev); 155 156 if ((dev->wanted_features ^ dev->features) & valid) 157 ret |= ETHTOOL_F_WISH; 158 159 return ret; 160 } 161 162 static int __ethtool_get_sset_count(struct net_device *dev, int sset) 163 { 164 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 165 const struct ethtool_ops *ops = dev->ethtool_ops; 166 167 if (sset == ETH_SS_FEATURES) 168 return ARRAY_SIZE(netdev_features_strings); 169 170 if (sset == ETH_SS_RSS_HASH_FUNCS) 171 return ARRAY_SIZE(rss_hash_func_strings); 172 173 if (sset == ETH_SS_TUNABLES) 174 return ARRAY_SIZE(tunable_strings); 175 176 if (sset == ETH_SS_PHY_TUNABLES) 177 return ARRAY_SIZE(phy_tunable_strings); 178 179 if (sset == ETH_SS_PHY_STATS && dev->phydev && 180 !ops->get_ethtool_phy_stats && 181 phy_ops && phy_ops->get_sset_count) 182 return phy_ops->get_sset_count(dev->phydev); 183 184 if (sset == ETH_SS_LINK_MODES) 185 return __ETHTOOL_LINK_MODE_MASK_NBITS; 186 187 if (ops->get_sset_count && ops->get_strings) 188 return ops->get_sset_count(dev, sset); 189 else 190 return -EOPNOTSUPP; 191 } 192 193 static void __ethtool_get_strings(struct net_device *dev, 194 u32 stringset, u8 *data) 195 { 196 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 197 const struct ethtool_ops *ops = dev->ethtool_ops; 198 199 if (stringset == ETH_SS_FEATURES) 200 memcpy(data, netdev_features_strings, 201 sizeof(netdev_features_strings)); 202 else if (stringset == ETH_SS_RSS_HASH_FUNCS) 203 memcpy(data, rss_hash_func_strings, 204 sizeof(rss_hash_func_strings)); 205 else if (stringset == ETH_SS_TUNABLES) 206 memcpy(data, tunable_strings, sizeof(tunable_strings)); 207 else if (stringset == ETH_SS_PHY_TUNABLES) 208 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); 209 else if (stringset == ETH_SS_PHY_STATS && dev->phydev && 210 !ops->get_ethtool_phy_stats && phy_ops && 211 phy_ops->get_strings) 212 phy_ops->get_strings(dev->phydev, data); 213 else if (stringset == ETH_SS_LINK_MODES) 214 memcpy(data, link_mode_names, 215 __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN); 216 else 217 /* ops->get_strings is valid because checked earlier */ 218 ops->get_strings(dev, stringset, data); 219 } 220 221 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) 222 { 223 /* feature masks of legacy discrete ethtool ops */ 224 225 switch (eth_cmd) { 226 case ETHTOOL_GTXCSUM: 227 case ETHTOOL_STXCSUM: 228 return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC | 229 NETIF_F_SCTP_CRC; 230 case ETHTOOL_GRXCSUM: 231 case ETHTOOL_SRXCSUM: 232 return NETIF_F_RXCSUM; 233 case ETHTOOL_GSG: 234 case ETHTOOL_SSG: 235 return NETIF_F_SG | NETIF_F_FRAGLIST; 236 case ETHTOOL_GTSO: 237 case ETHTOOL_STSO: 238 return NETIF_F_ALL_TSO; 239 case ETHTOOL_GGSO: 240 case ETHTOOL_SGSO: 241 return NETIF_F_GSO; 242 case ETHTOOL_GGRO: 243 case ETHTOOL_SGRO: 244 return NETIF_F_GRO; 245 default: 246 BUG(); 247 } 248 } 249 250 static int ethtool_get_one_feature(struct net_device *dev, 251 char __user *useraddr, u32 ethcmd) 252 { 253 netdev_features_t mask = ethtool_get_feature_mask(ethcmd); 254 struct ethtool_value edata = { 255 .cmd = ethcmd, 256 .data = !!(dev->features & mask), 257 }; 258 259 if (copy_to_user(useraddr, &edata, sizeof(edata))) 260 return -EFAULT; 261 return 0; 262 } 263 264 static int ethtool_set_one_feature(struct net_device *dev, 265 void __user *useraddr, u32 ethcmd) 266 { 267 struct ethtool_value edata; 268 netdev_features_t mask; 269 270 if (copy_from_user(&edata, useraddr, sizeof(edata))) 271 return -EFAULT; 272 273 mask = ethtool_get_feature_mask(ethcmd); 274 mask &= dev->hw_features; 275 if (!mask) 276 return -EOPNOTSUPP; 277 278 if (edata.data) 279 dev->wanted_features |= mask; 280 else 281 dev->wanted_features &= ~mask; 282 283 __netdev_update_features(dev); 284 285 return 0; 286 } 287 288 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ 289 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) 290 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ 291 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ 292 NETIF_F_RXHASH) 293 294 static u32 __ethtool_get_flags(struct net_device *dev) 295 { 296 u32 flags = 0; 297 298 if (dev->features & NETIF_F_LRO) 299 flags |= ETH_FLAG_LRO; 300 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 301 flags |= ETH_FLAG_RXVLAN; 302 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) 303 flags |= ETH_FLAG_TXVLAN; 304 if (dev->features & NETIF_F_NTUPLE) 305 flags |= ETH_FLAG_NTUPLE; 306 if (dev->features & NETIF_F_RXHASH) 307 flags |= ETH_FLAG_RXHASH; 308 309 return flags; 310 } 311 312 static int __ethtool_set_flags(struct net_device *dev, u32 data) 313 { 314 netdev_features_t features = 0, changed; 315 316 if (data & ~ETH_ALL_FLAGS) 317 return -EINVAL; 318 319 if (data & ETH_FLAG_LRO) 320 features |= NETIF_F_LRO; 321 if (data & ETH_FLAG_RXVLAN) 322 features |= NETIF_F_HW_VLAN_CTAG_RX; 323 if (data & ETH_FLAG_TXVLAN) 324 features |= NETIF_F_HW_VLAN_CTAG_TX; 325 if (data & ETH_FLAG_NTUPLE) 326 features |= NETIF_F_NTUPLE; 327 if (data & ETH_FLAG_RXHASH) 328 features |= NETIF_F_RXHASH; 329 330 /* allow changing only bits set in hw_features */ 331 changed = (features ^ dev->features) & ETH_ALL_FEATURES; 332 if (changed & ~dev->hw_features) 333 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; 334 335 dev->wanted_features = 336 (dev->wanted_features & ~changed) | (features & changed); 337 338 __netdev_update_features(dev); 339 340 return 0; 341 } 342 343 /* Given two link masks, AND them together and save the result in dst. */ 344 void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, 345 struct ethtool_link_ksettings *src) 346 { 347 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); 348 unsigned int idx = 0; 349 350 for (; idx < size; idx++) { 351 dst->link_modes.supported[idx] &= 352 src->link_modes.supported[idx]; 353 dst->link_modes.advertising[idx] &= 354 src->link_modes.advertising[idx]; 355 } 356 } 357 EXPORT_SYMBOL(ethtool_intersect_link_masks); 358 359 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, 360 u32 legacy_u32) 361 { 362 linkmode_zero(dst); 363 dst[0] = legacy_u32; 364 } 365 EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); 366 367 /* return false if src had higher bits set. lower bits always updated. */ 368 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, 369 const unsigned long *src) 370 { 371 *legacy_u32 = src[0]; 372 return find_next_bit(src, __ETHTOOL_LINK_MODE_MASK_NBITS, 32) == 373 __ETHTOOL_LINK_MODE_MASK_NBITS; 374 } 375 EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); 376 377 /* return false if ksettings link modes had higher bits 378 * set. legacy_settings always updated (best effort) 379 */ 380 static bool 381 convert_link_ksettings_to_legacy_settings( 382 struct ethtool_cmd *legacy_settings, 383 const struct ethtool_link_ksettings *link_ksettings) 384 { 385 bool retval = true; 386 387 memset(legacy_settings, 0, sizeof(*legacy_settings)); 388 /* this also clears the deprecated fields in legacy structure: 389 * __u8 transceiver; 390 * __u32 maxtxpkt; 391 * __u32 maxrxpkt; 392 */ 393 394 retval &= ethtool_convert_link_mode_to_legacy_u32( 395 &legacy_settings->supported, 396 link_ksettings->link_modes.supported); 397 retval &= ethtool_convert_link_mode_to_legacy_u32( 398 &legacy_settings->advertising, 399 link_ksettings->link_modes.advertising); 400 retval &= ethtool_convert_link_mode_to_legacy_u32( 401 &legacy_settings->lp_advertising, 402 link_ksettings->link_modes.lp_advertising); 403 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); 404 legacy_settings->duplex 405 = link_ksettings->base.duplex; 406 legacy_settings->port 407 = link_ksettings->base.port; 408 legacy_settings->phy_address 409 = link_ksettings->base.phy_address; 410 legacy_settings->autoneg 411 = link_ksettings->base.autoneg; 412 legacy_settings->mdio_support 413 = link_ksettings->base.mdio_support; 414 legacy_settings->eth_tp_mdix 415 = link_ksettings->base.eth_tp_mdix; 416 legacy_settings->eth_tp_mdix_ctrl 417 = link_ksettings->base.eth_tp_mdix_ctrl; 418 legacy_settings->transceiver 419 = link_ksettings->base.transceiver; 420 return retval; 421 } 422 423 /* number of 32-bit words to store the user's link mode bitmaps */ 424 #define __ETHTOOL_LINK_MODE_MASK_NU32 \ 425 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) 426 427 /* layout of the struct passed from/to userland */ 428 struct ethtool_link_usettings { 429 struct ethtool_link_settings base; 430 struct { 431 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; 432 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 433 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 434 } link_modes; 435 }; 436 437 /* Internal kernel helper to query a device ethtool_link_settings. */ 438 int __ethtool_get_link_ksettings(struct net_device *dev, 439 struct ethtool_link_ksettings *link_ksettings) 440 { 441 ASSERT_RTNL(); 442 443 if (!dev->ethtool_ops->get_link_ksettings) 444 return -EOPNOTSUPP; 445 446 if (!netif_device_present(dev)) 447 return -ENODEV; 448 449 memset(link_ksettings, 0, sizeof(*link_ksettings)); 450 return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings); 451 } 452 EXPORT_SYMBOL(__ethtool_get_link_ksettings); 453 454 /* convert ethtool_link_usettings in user space to a kernel internal 455 * ethtool_link_ksettings. return 0 on success, errno on error. 456 */ 457 static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, 458 const void __user *from) 459 { 460 struct ethtool_link_usettings link_usettings; 461 462 if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) 463 return -EFAULT; 464 465 memcpy(&to->base, &link_usettings.base, sizeof(to->base)); 466 bitmap_from_arr32(to->link_modes.supported, 467 link_usettings.link_modes.supported, 468 __ETHTOOL_LINK_MODE_MASK_NBITS); 469 bitmap_from_arr32(to->link_modes.advertising, 470 link_usettings.link_modes.advertising, 471 __ETHTOOL_LINK_MODE_MASK_NBITS); 472 bitmap_from_arr32(to->link_modes.lp_advertising, 473 link_usettings.link_modes.lp_advertising, 474 __ETHTOOL_LINK_MODE_MASK_NBITS); 475 476 return 0; 477 } 478 479 /* Check if the user is trying to change anything besides speed/duplex */ 480 bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd) 481 { 482 struct ethtool_link_settings base2 = {}; 483 484 base2.speed = cmd->base.speed; 485 base2.port = PORT_OTHER; 486 base2.duplex = cmd->base.duplex; 487 base2.cmd = cmd->base.cmd; 488 base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords; 489 490 return !memcmp(&base2, &cmd->base, sizeof(base2)) && 491 bitmap_empty(cmd->link_modes.supported, 492 __ETHTOOL_LINK_MODE_MASK_NBITS) && 493 bitmap_empty(cmd->link_modes.lp_advertising, 494 __ETHTOOL_LINK_MODE_MASK_NBITS); 495 } 496 497 /* convert a kernel internal ethtool_link_ksettings to 498 * ethtool_link_usettings in user space. return 0 on success, errno on 499 * error. 500 */ 501 static int 502 store_link_ksettings_for_user(void __user *to, 503 const struct ethtool_link_ksettings *from) 504 { 505 struct ethtool_link_usettings link_usettings; 506 507 memcpy(&link_usettings, from, sizeof(link_usettings)); 508 bitmap_to_arr32(link_usettings.link_modes.supported, 509 from->link_modes.supported, 510 __ETHTOOL_LINK_MODE_MASK_NBITS); 511 bitmap_to_arr32(link_usettings.link_modes.advertising, 512 from->link_modes.advertising, 513 __ETHTOOL_LINK_MODE_MASK_NBITS); 514 bitmap_to_arr32(link_usettings.link_modes.lp_advertising, 515 from->link_modes.lp_advertising, 516 __ETHTOOL_LINK_MODE_MASK_NBITS); 517 518 if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) 519 return -EFAULT; 520 521 return 0; 522 } 523 524 /* Query device for its ethtool_link_settings. */ 525 static int ethtool_get_link_ksettings(struct net_device *dev, 526 void __user *useraddr) 527 { 528 int err = 0; 529 struct ethtool_link_ksettings link_ksettings; 530 531 ASSERT_RTNL(); 532 if (!dev->ethtool_ops->get_link_ksettings) 533 return -EOPNOTSUPP; 534 535 /* handle bitmap nbits handshake */ 536 if (copy_from_user(&link_ksettings.base, useraddr, 537 sizeof(link_ksettings.base))) 538 return -EFAULT; 539 540 if (__ETHTOOL_LINK_MODE_MASK_NU32 541 != link_ksettings.base.link_mode_masks_nwords) { 542 /* wrong link mode nbits requested */ 543 memset(&link_ksettings, 0, sizeof(link_ksettings)); 544 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 545 /* send back number of words required as negative val */ 546 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, 547 "need too many bits for link modes!"); 548 link_ksettings.base.link_mode_masks_nwords 549 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); 550 551 /* copy the base fields back to user, not the link 552 * mode bitmaps 553 */ 554 if (copy_to_user(useraddr, &link_ksettings.base, 555 sizeof(link_ksettings.base))) 556 return -EFAULT; 557 558 return 0; 559 } 560 561 /* handshake successful: user/kernel agree on 562 * link_mode_masks_nwords 563 */ 564 565 memset(&link_ksettings, 0, sizeof(link_ksettings)); 566 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 567 if (err < 0) 568 return err; 569 570 /* make sure we tell the right values to user */ 571 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 572 link_ksettings.base.link_mode_masks_nwords 573 = __ETHTOOL_LINK_MODE_MASK_NU32; 574 link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED; 575 link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED; 576 link_ksettings.base.rate_matching = RATE_MATCH_NONE; 577 578 return store_link_ksettings_for_user(useraddr, &link_ksettings); 579 } 580 581 /* Update device ethtool_link_settings. */ 582 static int ethtool_set_link_ksettings(struct net_device *dev, 583 void __user *useraddr) 584 { 585 struct ethtool_link_ksettings link_ksettings = {}; 586 int err; 587 588 ASSERT_RTNL(); 589 590 if (!dev->ethtool_ops->set_link_ksettings) 591 return -EOPNOTSUPP; 592 593 /* make sure nbits field has expected value */ 594 if (copy_from_user(&link_ksettings.base, useraddr, 595 sizeof(link_ksettings.base))) 596 return -EFAULT; 597 598 if (__ETHTOOL_LINK_MODE_MASK_NU32 599 != link_ksettings.base.link_mode_masks_nwords) 600 return -EINVAL; 601 602 /* copy the whole structure, now that we know it has expected 603 * format 604 */ 605 err = load_link_ksettings_from_user(&link_ksettings, useraddr); 606 if (err) 607 return err; 608 609 /* re-check nwords field, just in case */ 610 if (__ETHTOOL_LINK_MODE_MASK_NU32 611 != link_ksettings.base.link_mode_masks_nwords) 612 return -EINVAL; 613 614 if (link_ksettings.base.master_slave_cfg || 615 link_ksettings.base.master_slave_state) 616 return -EINVAL; 617 618 err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 619 if (err >= 0) { 620 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF); 621 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF); 622 } 623 return err; 624 } 625 626 int ethtool_virtdev_set_link_ksettings(struct net_device *dev, 627 const struct ethtool_link_ksettings *cmd, 628 u32 *dev_speed, u8 *dev_duplex) 629 { 630 u32 speed; 631 u8 duplex; 632 633 speed = cmd->base.speed; 634 duplex = cmd->base.duplex; 635 /* don't allow custom speed and duplex */ 636 if (!ethtool_validate_speed(speed) || 637 !ethtool_validate_duplex(duplex) || 638 !ethtool_virtdev_validate_cmd(cmd)) 639 return -EINVAL; 640 *dev_speed = speed; 641 *dev_duplex = duplex; 642 643 return 0; 644 } 645 EXPORT_SYMBOL(ethtool_virtdev_set_link_ksettings); 646 647 /* Query device for its ethtool_cmd settings. 648 * 649 * Backward compatibility note: for compatibility with legacy ethtool, this is 650 * now implemented via get_link_ksettings. When driver reports higher link mode 651 * bits, a kernel warning is logged once (with name of 1st driver/device) to 652 * recommend user to upgrade ethtool, but the command is successful (only the 653 * lower link mode bits reported back to user). Deprecated fields from 654 * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero. 655 */ 656 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) 657 { 658 struct ethtool_link_ksettings link_ksettings; 659 struct ethtool_cmd cmd; 660 int err; 661 662 ASSERT_RTNL(); 663 if (!dev->ethtool_ops->get_link_ksettings) 664 return -EOPNOTSUPP; 665 666 if (dev->ethtool->module_fw_flash_in_progress) 667 return -EBUSY; 668 669 memset(&link_ksettings, 0, sizeof(link_ksettings)); 670 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 671 if (err < 0) 672 return err; 673 convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings); 674 675 /* send a sensible cmd tag back to user */ 676 cmd.cmd = ETHTOOL_GSET; 677 678 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 679 return -EFAULT; 680 681 return 0; 682 } 683 684 /* Update device link settings with given ethtool_cmd. 685 * 686 * Backward compatibility note: for compatibility with legacy ethtool, this is 687 * now always implemented via set_link_settings. When user's request updates 688 * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel 689 * warning is logged once (with name of 1st driver/device) to recommend user to 690 * upgrade ethtool, and the request is rejected. 691 */ 692 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) 693 { 694 struct ethtool_link_ksettings link_ksettings; 695 struct ethtool_cmd cmd; 696 int ret; 697 698 ASSERT_RTNL(); 699 700 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 701 return -EFAULT; 702 if (!dev->ethtool_ops->set_link_ksettings) 703 return -EOPNOTSUPP; 704 705 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd)) 706 return -EINVAL; 707 link_ksettings.base.link_mode_masks_nwords = 708 __ETHTOOL_LINK_MODE_MASK_NU32; 709 ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 710 if (ret >= 0) { 711 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF); 712 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF); 713 } 714 return ret; 715 } 716 717 static int 718 ethtool_get_drvinfo(struct net_device *dev, struct ethtool_devlink_compat *rsp) 719 { 720 const struct ethtool_ops *ops = dev->ethtool_ops; 721 struct device *parent = dev->dev.parent; 722 723 rsp->info.cmd = ETHTOOL_GDRVINFO; 724 strscpy(rsp->info.version, init_uts_ns.name.release, 725 sizeof(rsp->info.version)); 726 if (ops->get_drvinfo) { 727 ops->get_drvinfo(dev, &rsp->info); 728 if (!rsp->info.bus_info[0] && parent) 729 strscpy(rsp->info.bus_info, dev_name(parent), 730 sizeof(rsp->info.bus_info)); 731 if (!rsp->info.driver[0] && parent && parent->driver) 732 strscpy(rsp->info.driver, parent->driver->name, 733 sizeof(rsp->info.driver)); 734 } else if (parent && parent->driver) { 735 strscpy(rsp->info.bus_info, dev_name(parent), 736 sizeof(rsp->info.bus_info)); 737 strscpy(rsp->info.driver, parent->driver->name, 738 sizeof(rsp->info.driver)); 739 } else if (dev->rtnl_link_ops) { 740 strscpy(rsp->info.driver, dev->rtnl_link_ops->kind, 741 sizeof(rsp->info.driver)); 742 } else { 743 return -EOPNOTSUPP; 744 } 745 746 /* 747 * this method of obtaining string set info is deprecated; 748 * Use ETHTOOL_GSSET_INFO instead. 749 */ 750 if (ops->get_sset_count) { 751 int rc; 752 753 rc = ops->get_sset_count(dev, ETH_SS_TEST); 754 if (rc >= 0) 755 rsp->info.testinfo_len = rc; 756 rc = ops->get_sset_count(dev, ETH_SS_STATS); 757 if (rc >= 0) 758 rsp->info.n_stats = rc; 759 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); 760 if (rc >= 0) 761 rsp->info.n_priv_flags = rc; 762 } 763 if (ops->get_regs_len) { 764 int ret = ops->get_regs_len(dev); 765 766 if (ret > 0) 767 rsp->info.regdump_len = ret; 768 } 769 770 if (ops->get_eeprom_len) 771 rsp->info.eedump_len = ops->get_eeprom_len(dev); 772 773 if (!rsp->info.fw_version[0]) 774 rsp->devlink = netdev_to_devlink_get(dev); 775 776 return 0; 777 } 778 779 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, 780 void __user *useraddr) 781 { 782 struct ethtool_sset_info info; 783 u64 sset_mask; 784 int i, idx = 0, n_bits = 0, ret, rc; 785 u32 *info_buf = NULL; 786 787 if (copy_from_user(&info, useraddr, sizeof(info))) 788 return -EFAULT; 789 790 /* store copy of mask, because we zero struct later on */ 791 sset_mask = info.sset_mask; 792 if (!sset_mask) 793 return 0; 794 795 /* calculate size of return buffer */ 796 n_bits = hweight64(sset_mask); 797 798 memset(&info, 0, sizeof(info)); 799 info.cmd = ETHTOOL_GSSET_INFO; 800 801 info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER); 802 if (!info_buf) 803 return -ENOMEM; 804 805 /* 806 * fill return buffer based on input bitmask and successful 807 * get_sset_count return 808 */ 809 for (i = 0; i < 64; i++) { 810 if (!(sset_mask & (1ULL << i))) 811 continue; 812 813 rc = __ethtool_get_sset_count(dev, i); 814 if (rc >= 0) { 815 info.sset_mask |= (1ULL << i); 816 info_buf[idx++] = rc; 817 } 818 } 819 820 ret = -EFAULT; 821 if (copy_to_user(useraddr, &info, sizeof(info))) 822 goto out; 823 824 useraddr += offsetof(struct ethtool_sset_info, data); 825 if (copy_to_user(useraddr, info_buf, array_size(idx, sizeof(u32)))) 826 goto out; 827 828 ret = 0; 829 830 out: 831 kfree(info_buf); 832 return ret; 833 } 834 835 static noinline_for_stack int 836 ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc, 837 const struct compat_ethtool_rxnfc __user *useraddr, 838 size_t size) 839 { 840 struct compat_ethtool_rxnfc crxnfc = {}; 841 842 /* We expect there to be holes between fs.m_ext and 843 * fs.ring_cookie and at the end of fs, but nowhere else. 844 * On non-x86, no conversion should be needed. 845 */ 846 BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) && 847 sizeof(struct compat_ethtool_rxnfc) != 848 sizeof(struct ethtool_rxnfc)); 849 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) + 850 sizeof(useraddr->fs.m_ext) != 851 offsetof(struct ethtool_rxnfc, fs.m_ext) + 852 sizeof(rxnfc->fs.m_ext)); 853 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) - 854 offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) != 855 offsetof(struct ethtool_rxnfc, fs.location) - 856 offsetof(struct ethtool_rxnfc, fs.ring_cookie)); 857 858 if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc)))) 859 return -EFAULT; 860 861 *rxnfc = (struct ethtool_rxnfc) { 862 .cmd = crxnfc.cmd, 863 .flow_type = crxnfc.flow_type, 864 .data = crxnfc.data, 865 .fs = { 866 .flow_type = crxnfc.fs.flow_type, 867 .h_u = crxnfc.fs.h_u, 868 .h_ext = crxnfc.fs.h_ext, 869 .m_u = crxnfc.fs.m_u, 870 .m_ext = crxnfc.fs.m_ext, 871 .ring_cookie = crxnfc.fs.ring_cookie, 872 .location = crxnfc.fs.location, 873 }, 874 .rule_cnt = crxnfc.rule_cnt, 875 }; 876 877 return 0; 878 } 879 880 static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc, 881 const void __user *useraddr, 882 size_t size) 883 { 884 if (compat_need_64bit_alignment_fixup()) 885 return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size); 886 887 if (copy_from_user(rxnfc, useraddr, size)) 888 return -EFAULT; 889 890 return 0; 891 } 892 893 static int ethtool_rxnfc_copy_to_compat(void __user *useraddr, 894 const struct ethtool_rxnfc *rxnfc, 895 size_t size, const u32 *rule_buf) 896 { 897 struct compat_ethtool_rxnfc crxnfc; 898 899 memset(&crxnfc, 0, sizeof(crxnfc)); 900 crxnfc = (struct compat_ethtool_rxnfc) { 901 .cmd = rxnfc->cmd, 902 .flow_type = rxnfc->flow_type, 903 .data = rxnfc->data, 904 .fs = { 905 .flow_type = rxnfc->fs.flow_type, 906 .h_u = rxnfc->fs.h_u, 907 .h_ext = rxnfc->fs.h_ext, 908 .m_u = rxnfc->fs.m_u, 909 .m_ext = rxnfc->fs.m_ext, 910 .ring_cookie = rxnfc->fs.ring_cookie, 911 .location = rxnfc->fs.location, 912 }, 913 .rule_cnt = rxnfc->rule_cnt, 914 }; 915 916 if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc)))) 917 return -EFAULT; 918 919 return 0; 920 } 921 922 static int ethtool_rxnfc_copy_struct(u32 cmd, struct ethtool_rxnfc *info, 923 size_t *info_size, void __user *useraddr) 924 { 925 /* struct ethtool_rxnfc was originally defined for 926 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 927 * members. User-space might still be using that 928 * definition. 929 */ 930 if (cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) 931 *info_size = (offsetof(struct ethtool_rxnfc, data) + 932 sizeof(info->data)); 933 934 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) 935 return -EFAULT; 936 937 if ((cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) && info->flow_type & FLOW_RSS) { 938 *info_size = sizeof(*info); 939 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) 940 return -EFAULT; 941 /* Since malicious users may modify the original data, 942 * we need to check whether FLOW_RSS is still requested. 943 */ 944 if (!(info->flow_type & FLOW_RSS)) 945 return -EINVAL; 946 } 947 948 if (info->cmd != cmd) 949 return -EINVAL; 950 951 return 0; 952 } 953 954 static int ethtool_rxnfc_copy_to_user(void __user *useraddr, 955 const struct ethtool_rxnfc *rxnfc, 956 size_t size, const u32 *rule_buf) 957 { 958 int ret; 959 960 if (compat_need_64bit_alignment_fixup()) { 961 ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size, 962 rule_buf); 963 useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs); 964 } else { 965 ret = copy_to_user(useraddr, rxnfc, size); 966 useraddr += offsetof(struct ethtool_rxnfc, rule_locs); 967 } 968 969 if (ret) 970 return -EFAULT; 971 972 if (rule_buf) { 973 if (copy_to_user(useraddr, rule_buf, 974 rxnfc->rule_cnt * sizeof(u32))) 975 return -EFAULT; 976 } 977 978 return 0; 979 } 980 981 static bool flow_type_hashable(u32 flow_type) 982 { 983 switch (flow_type) { 984 case ETHER_FLOW: 985 case TCP_V4_FLOW: 986 case UDP_V4_FLOW: 987 case SCTP_V4_FLOW: 988 case AH_ESP_V4_FLOW: 989 case TCP_V6_FLOW: 990 case UDP_V6_FLOW: 991 case SCTP_V6_FLOW: 992 case AH_ESP_V6_FLOW: 993 case AH_V4_FLOW: 994 case ESP_V4_FLOW: 995 case AH_V6_FLOW: 996 case ESP_V6_FLOW: 997 case IPV4_FLOW: 998 case IPV6_FLOW: 999 case GTPU_V4_FLOW: 1000 case GTPU_V6_FLOW: 1001 case GTPC_V4_FLOW: 1002 case GTPC_V6_FLOW: 1003 case GTPC_TEID_V4_FLOW: 1004 case GTPC_TEID_V6_FLOW: 1005 case GTPU_EH_V4_FLOW: 1006 case GTPU_EH_V6_FLOW: 1007 case GTPU_UL_V4_FLOW: 1008 case GTPU_UL_V6_FLOW: 1009 case GTPU_DL_V4_FLOW: 1010 case GTPU_DL_V6_FLOW: 1011 return true; 1012 } 1013 1014 return false; 1015 } 1016 1017 /* When adding a new type, update the assert and, if it's hashable, add it to 1018 * the flow_type_hashable switch case. 1019 */ 1020 static_assert(GTPU_DL_V6_FLOW + 1 == __FLOW_TYPE_COUNT); 1021 1022 static int ethtool_check_xfrm_rxfh(u32 input_xfrm, u64 rxfh) 1023 { 1024 /* Sanity check: if symmetric-xor/symmetric-or-xor is set, then: 1025 * 1 - no other fields besides IP src/dst and/or L4 src/dst are set 1026 * 2 - If src is set, dst must also be set 1027 */ 1028 if ((input_xfrm != RXH_XFRM_NO_CHANGE && 1029 input_xfrm & (RXH_XFRM_SYM_XOR | RXH_XFRM_SYM_OR_XOR)) && 1030 ((rxfh & ~(RXH_IP_SRC | RXH_IP_DST | RXH_L4_B_0_1 | RXH_L4_B_2_3)) || 1031 (!!(rxfh & RXH_IP_SRC) ^ !!(rxfh & RXH_IP_DST)) || 1032 (!!(rxfh & RXH_L4_B_0_1) ^ !!(rxfh & RXH_L4_B_2_3)))) 1033 return -EINVAL; 1034 1035 return 0; 1036 } 1037 1038 static int ethtool_check_flow_types(struct net_device *dev, u32 input_xfrm) 1039 { 1040 const struct ethtool_ops *ops = dev->ethtool_ops; 1041 int err; 1042 u32 i; 1043 1044 for (i = 0; i < __FLOW_TYPE_COUNT; i++) { 1045 struct ethtool_rxfh_fields fields = { 1046 .flow_type = i, 1047 }; 1048 1049 if (!flow_type_hashable(i)) 1050 continue; 1051 1052 if (ops->get_rxfh_fields(dev, &fields)) 1053 continue; 1054 1055 err = ethtool_check_xfrm_rxfh(input_xfrm, fields.data); 1056 if (err) 1057 return err; 1058 } 1059 1060 return 0; 1061 } 1062 1063 static noinline_for_stack int 1064 ethtool_set_rxfh_fields(struct net_device *dev, u32 cmd, void __user *useraddr) 1065 { 1066 const struct ethtool_ops *ops = dev->ethtool_ops; 1067 struct ethtool_rxfh_fields fields = {}; 1068 struct ethtool_rxnfc info; 1069 size_t info_size = sizeof(info); 1070 int rc; 1071 1072 if (!ops->set_rxfh_fields) 1073 return -EOPNOTSUPP; 1074 1075 rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1076 if (rc) 1077 return rc; 1078 1079 if (info.flow_type & FLOW_RSS && info.rss_context && 1080 !ops->rxfh_per_ctx_fields) 1081 return -EINVAL; 1082 1083 mutex_lock(&dev->ethtool->rss_lock); 1084 if (ops->get_rxfh) { 1085 struct ethtool_rxfh_param rxfh = {}; 1086 1087 rc = ops->get_rxfh(dev, &rxfh); 1088 if (rc) 1089 goto exit_unlock; 1090 1091 rc = ethtool_check_xfrm_rxfh(rxfh.input_xfrm, info.data); 1092 if (rc) 1093 goto exit_unlock; 1094 } 1095 1096 fields.data = info.data; 1097 fields.flow_type = info.flow_type & ~FLOW_RSS; 1098 if (info.flow_type & FLOW_RSS) 1099 fields.rss_context = info.rss_context; 1100 1101 rc = ops->set_rxfh_fields(dev, &fields, NULL); 1102 exit_unlock: 1103 mutex_unlock(&dev->ethtool->rss_lock); 1104 if (rc) 1105 return rc; 1106 1107 ethtool_rss_notify(dev, fields.rss_context); 1108 return 0; 1109 } 1110 1111 static noinline_for_stack int 1112 ethtool_get_rxfh_fields(struct net_device *dev, u32 cmd, void __user *useraddr) 1113 { 1114 struct ethtool_rxnfc info; 1115 size_t info_size = sizeof(info); 1116 const struct ethtool_ops *ops = dev->ethtool_ops; 1117 struct ethtool_rxfh_fields fields = {}; 1118 int ret; 1119 1120 if (!ops->get_rxfh_fields) 1121 return -EOPNOTSUPP; 1122 1123 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1124 if (ret) 1125 return ret; 1126 1127 if (info.flow_type & FLOW_RSS && info.rss_context && 1128 !ops->rxfh_per_ctx_fields) 1129 return -EINVAL; 1130 1131 fields.flow_type = info.flow_type & ~FLOW_RSS; 1132 if (info.flow_type & FLOW_RSS) 1133 fields.rss_context = info.rss_context; 1134 1135 mutex_lock(&dev->ethtool->rss_lock); 1136 ret = ops->get_rxfh_fields(dev, &fields); 1137 mutex_unlock(&dev->ethtool->rss_lock); 1138 if (ret < 0) 1139 return ret; 1140 1141 info.data = fields.data; 1142 1143 return ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL); 1144 } 1145 1146 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, 1147 u32 cmd, void __user *useraddr) 1148 { 1149 const struct ethtool_ops *ops = dev->ethtool_ops; 1150 struct ethtool_rxnfc info; 1151 size_t info_size = sizeof(info); 1152 int rc; 1153 1154 if (!ops->set_rxnfc) 1155 return -EOPNOTSUPP; 1156 1157 rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1158 if (rc) 1159 return rc; 1160 1161 if (cmd == ETHTOOL_SRXCLSRLINS && info.fs.flow_type & FLOW_RSS) { 1162 /* Nonzero ring with RSS only makes sense 1163 * if NIC adds them together 1164 */ 1165 if (!ops->cap_rss_rxnfc_adds && 1166 ethtool_get_flow_spec_ring(info.fs.ring_cookie)) 1167 return -EINVAL; 1168 1169 if (info.rss_context && 1170 !xa_load(&dev->ethtool->rss_ctx, info.rss_context)) 1171 return -EINVAL; 1172 } 1173 1174 rc = ops->set_rxnfc(dev, &info); 1175 if (rc) 1176 return rc; 1177 1178 if (cmd == ETHTOOL_SRXCLSRLINS && 1179 ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL)) 1180 return -EFAULT; 1181 1182 return 0; 1183 } 1184 1185 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, 1186 u32 cmd, void __user *useraddr) 1187 { 1188 struct ethtool_rxnfc info; 1189 size_t info_size = sizeof(info); 1190 const struct ethtool_ops *ops = dev->ethtool_ops; 1191 int ret; 1192 void *rule_buf = NULL; 1193 1194 if (!ops->get_rxnfc) 1195 return -EOPNOTSUPP; 1196 1197 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1198 if (ret) 1199 return ret; 1200 1201 if (info.cmd == ETHTOOL_GRXCLSRLALL) { 1202 if (info.rule_cnt > 0) { 1203 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) 1204 rule_buf = kcalloc(info.rule_cnt, sizeof(u32), 1205 GFP_USER); 1206 if (!rule_buf) 1207 return -ENOMEM; 1208 } 1209 } 1210 1211 ret = ops->get_rxnfc(dev, &info, rule_buf); 1212 if (ret < 0) 1213 goto err_out; 1214 1215 ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf); 1216 err_out: 1217 kfree(rule_buf); 1218 1219 return ret; 1220 } 1221 1222 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, 1223 struct ethtool_rxnfc *rx_rings, 1224 u32 size) 1225 { 1226 int i; 1227 1228 if (copy_from_user(indir, useraddr, array_size(size, sizeof(indir[0])))) 1229 return -EFAULT; 1230 1231 /* Validate ring indices */ 1232 for (i = 0; i < size; i++) 1233 if (indir[i] >= rx_rings->data) 1234 return -EINVAL; 1235 1236 return 0; 1237 } 1238 1239 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; 1240 1241 void netdev_rss_key_fill(void *buffer, size_t len) 1242 { 1243 BUG_ON(len > sizeof(netdev_rss_key)); 1244 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); 1245 memcpy(buffer, netdev_rss_key, len); 1246 } 1247 EXPORT_SYMBOL(netdev_rss_key_fill); 1248 1249 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, 1250 void __user *useraddr) 1251 { 1252 struct ethtool_rxfh_param rxfh = {}; 1253 u32 user_size; 1254 int ret; 1255 1256 if (!dev->ethtool_ops->get_rxfh_indir_size || 1257 !dev->ethtool_ops->get_rxfh) 1258 return -EOPNOTSUPP; 1259 rxfh.indir_size = dev->ethtool_ops->get_rxfh_indir_size(dev); 1260 if (rxfh.indir_size == 0) 1261 return -EOPNOTSUPP; 1262 1263 if (copy_from_user(&user_size, 1264 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1265 sizeof(user_size))) 1266 return -EFAULT; 1267 1268 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), 1269 &rxfh.indir_size, sizeof(rxfh.indir_size))) 1270 return -EFAULT; 1271 1272 /* If the user buffer size is 0, this is just a query for the 1273 * device table size. Otherwise, if it's smaller than the 1274 * device table size it's an error. 1275 */ 1276 if (user_size < rxfh.indir_size) 1277 return user_size == 0 ? 0 : -EINVAL; 1278 1279 rxfh.indir = kcalloc(rxfh.indir_size, sizeof(rxfh.indir[0]), GFP_USER); 1280 if (!rxfh.indir) 1281 return -ENOMEM; 1282 1283 mutex_lock(&dev->ethtool->rss_lock); 1284 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh); 1285 mutex_unlock(&dev->ethtool->rss_lock); 1286 if (ret) 1287 goto out; 1288 if (copy_to_user(useraddr + 1289 offsetof(struct ethtool_rxfh_indir, ring_index[0]), 1290 rxfh.indir, rxfh.indir_size * sizeof(*rxfh.indir))) 1291 ret = -EFAULT; 1292 1293 out: 1294 kfree(rxfh.indir); 1295 return ret; 1296 } 1297 1298 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, 1299 void __user *useraddr) 1300 { 1301 const struct ethtool_ops *ops = dev->ethtool_ops; 1302 struct ethtool_rxfh_param rxfh_dev = {}; 1303 struct netlink_ext_ack *extack = NULL; 1304 struct ethtool_rxnfc rx_rings; 1305 u32 user_size, i; 1306 int ret; 1307 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); 1308 1309 if (!ops->get_rxfh_indir_size || !ops->set_rxfh || 1310 !ops->get_rxnfc) 1311 return -EOPNOTSUPP; 1312 1313 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1314 if (rxfh_dev.indir_size == 0) 1315 return -EOPNOTSUPP; 1316 1317 if (copy_from_user(&user_size, 1318 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1319 sizeof(user_size))) 1320 return -EFAULT; 1321 1322 if (user_size != 0 && user_size != rxfh_dev.indir_size) 1323 return -EINVAL; 1324 1325 rxfh_dev.indir = kcalloc(rxfh_dev.indir_size, 1326 sizeof(rxfh_dev.indir[0]), GFP_USER); 1327 if (!rxfh_dev.indir) 1328 return -ENOMEM; 1329 1330 rx_rings.cmd = ETHTOOL_GRXRINGS; 1331 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1332 if (ret) 1333 goto out; 1334 1335 if (user_size == 0) { 1336 u32 *indir = rxfh_dev.indir; 1337 1338 for (i = 0; i < rxfh_dev.indir_size; i++) 1339 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1340 } else { 1341 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1342 useraddr + ringidx_offset, 1343 &rx_rings, 1344 rxfh_dev.indir_size); 1345 if (ret) 1346 goto out; 1347 } 1348 1349 rxfh_dev.hfunc = ETH_RSS_HASH_NO_CHANGE; 1350 1351 mutex_lock(&dev->ethtool->rss_lock); 1352 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1353 if (ret) 1354 goto out_unlock; 1355 1356 /* indicate whether rxfh was set to default */ 1357 if (user_size == 0) 1358 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1359 else 1360 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1361 1362 out_unlock: 1363 mutex_unlock(&dev->ethtool->rss_lock); 1364 out: 1365 kfree(rxfh_dev.indir); 1366 return ret; 1367 } 1368 1369 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, 1370 void __user *useraddr) 1371 { 1372 const struct ethtool_ops *ops = dev->ethtool_ops; 1373 struct ethtool_rxfh_param rxfh_dev = {}; 1374 u32 user_indir_size, user_key_size; 1375 struct ethtool_rxfh_context *ctx; 1376 struct ethtool_rxfh rxfh; 1377 u32 indir_bytes; 1378 u8 *rss_config; 1379 u32 total_size; 1380 int ret; 1381 1382 if (!ops->get_rxfh) 1383 return -EOPNOTSUPP; 1384 1385 if (ops->get_rxfh_indir_size) 1386 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1387 if (ops->get_rxfh_key_size) 1388 rxfh_dev.key_size = ops->get_rxfh_key_size(dev); 1389 1390 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1391 return -EFAULT; 1392 user_indir_size = rxfh.indir_size; 1393 user_key_size = rxfh.key_size; 1394 1395 /* Check that reserved fields are 0 for now */ 1396 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1397 return -EINVAL; 1398 /* Most drivers don't handle rss_context, check it's 0 as well */ 1399 if (rxfh.rss_context && !ops->create_rxfh_context) 1400 return -EOPNOTSUPP; 1401 1402 rxfh.indir_size = rxfh_dev.indir_size; 1403 rxfh.key_size = rxfh_dev.key_size; 1404 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) 1405 return -EFAULT; 1406 1407 if ((user_indir_size && user_indir_size != rxfh_dev.indir_size) || 1408 (user_key_size && user_key_size != rxfh_dev.key_size)) 1409 return -EINVAL; 1410 1411 indir_bytes = user_indir_size * sizeof(rxfh_dev.indir[0]); 1412 total_size = indir_bytes + user_key_size; 1413 rss_config = kzalloc(total_size, GFP_USER); 1414 if (!rss_config) 1415 return -ENOMEM; 1416 1417 if (user_indir_size) 1418 rxfh_dev.indir = (u32 *)rss_config; 1419 1420 if (user_key_size) 1421 rxfh_dev.key = rss_config + indir_bytes; 1422 1423 mutex_lock(&dev->ethtool->rss_lock); 1424 if (rxfh.rss_context) { 1425 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1426 if (!ctx) { 1427 ret = -ENOENT; 1428 goto out; 1429 } 1430 if (rxfh_dev.indir) 1431 memcpy(rxfh_dev.indir, ethtool_rxfh_context_indir(ctx), 1432 indir_bytes); 1433 if (!ops->rxfh_per_ctx_key) { 1434 rxfh_dev.key_size = 0; 1435 } else { 1436 if (rxfh_dev.key) 1437 memcpy(rxfh_dev.key, 1438 ethtool_rxfh_context_key(ctx), 1439 user_key_size); 1440 rxfh_dev.hfunc = ctx->hfunc; 1441 } 1442 rxfh_dev.input_xfrm = ctx->input_xfrm; 1443 ret = 0; 1444 } else { 1445 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh_dev); 1446 if (ret) 1447 goto out; 1448 } 1449 1450 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), 1451 &rxfh_dev.hfunc, sizeof(rxfh.hfunc))) { 1452 ret = -EFAULT; 1453 } else if (copy_to_user(useraddr + 1454 offsetof(struct ethtool_rxfh, input_xfrm), 1455 &rxfh_dev.input_xfrm, 1456 sizeof(rxfh.input_xfrm))) { 1457 ret = -EFAULT; 1458 } else if (copy_to_user(useraddr + 1459 offsetof(struct ethtool_rxfh, key_size), 1460 &rxfh_dev.key_size, 1461 sizeof(rxfh.key_size))) { 1462 ret = -EFAULT; 1463 } else if (copy_to_user(useraddr + 1464 offsetof(struct ethtool_rxfh, rss_config[0]), 1465 rss_config, total_size)) { 1466 ret = -EFAULT; 1467 } 1468 out: 1469 mutex_unlock(&dev->ethtool->rss_lock); 1470 kfree(rss_config); 1471 1472 return ret; 1473 } 1474 1475 static struct ethtool_rxfh_context * 1476 ethtool_rxfh_ctx_alloc(const struct ethtool_ops *ops, 1477 u32 indir_size, u32 key_size) 1478 { 1479 size_t indir_bytes, flex_len, key_off, size; 1480 struct ethtool_rxfh_context *ctx; 1481 u32 priv_bytes, indir_max; 1482 u16 key_max; 1483 1484 key_max = max(key_size, ops->rxfh_key_space); 1485 indir_max = max(indir_size, ops->rxfh_indir_space); 1486 1487 priv_bytes = ALIGN(ops->rxfh_priv_size, sizeof(u32)); 1488 indir_bytes = array_size(indir_max, sizeof(u32)); 1489 1490 key_off = size_add(priv_bytes, indir_bytes); 1491 flex_len = size_add(key_off, key_max); 1492 size = struct_size_t(struct ethtool_rxfh_context, data, flex_len); 1493 1494 ctx = kzalloc(size, GFP_KERNEL_ACCOUNT); 1495 if (!ctx) 1496 return NULL; 1497 1498 ctx->indir_size = indir_size; 1499 ctx->key_size = key_size; 1500 ctx->key_off = key_off; 1501 ctx->priv_size = ops->rxfh_priv_size; 1502 1503 ctx->hfunc = ETH_RSS_HASH_NO_CHANGE; 1504 ctx->input_xfrm = RXH_XFRM_NO_CHANGE; 1505 1506 return ctx; 1507 } 1508 1509 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, 1510 void __user *useraddr) 1511 { 1512 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); 1513 const struct ethtool_ops *ops = dev->ethtool_ops; 1514 u32 dev_indir_size = 0, dev_key_size = 0, i; 1515 u32 user_indir_len = 0, indir_bytes = 0; 1516 struct ethtool_rxfh_param rxfh_dev = {}; 1517 struct ethtool_rxfh_context *ctx = NULL; 1518 struct netlink_ext_ack *extack = NULL; 1519 struct ethtool_rxnfc rx_rings; 1520 struct ethtool_rxfh rxfh; 1521 bool create = false; 1522 bool mod = false; 1523 u8 *rss_config; 1524 int ret; 1525 1526 if (!ops->get_rxnfc || !ops->get_rxfh_fields || !ops->set_rxfh) 1527 return -EOPNOTSUPP; 1528 1529 if (ops->get_rxfh_indir_size) 1530 dev_indir_size = ops->get_rxfh_indir_size(dev); 1531 if (ops->get_rxfh_key_size) 1532 dev_key_size = ops->get_rxfh_key_size(dev); 1533 1534 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1535 return -EFAULT; 1536 1537 /* Check that reserved fields are 0 for now */ 1538 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1539 return -EINVAL; 1540 /* Most drivers don't handle rss_context, check it's 0 as well */ 1541 if (rxfh.rss_context && !ops->create_rxfh_context) 1542 return -EOPNOTSUPP; 1543 /* Check input data transformation capabilities */ 1544 if (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_SYM_XOR && 1545 rxfh.input_xfrm != RXH_XFRM_SYM_OR_XOR && 1546 rxfh.input_xfrm != RXH_XFRM_NO_CHANGE) 1547 return -EINVAL; 1548 if (rxfh.input_xfrm != RXH_XFRM_NO_CHANGE && 1549 rxfh.input_xfrm & ~ops->supported_input_xfrm) 1550 return -EOPNOTSUPP; 1551 create = rxfh.rss_context == ETH_RXFH_CONTEXT_ALLOC; 1552 1553 if ((rxfh.indir_size && 1554 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && 1555 rxfh.indir_size != dev_indir_size) || 1556 (rxfh.key_size && rxfh.key_size != dev_key_size)) 1557 return -EINVAL; 1558 1559 /* Must request at least one change: indir size, hash key, function 1560 * or input transformation. 1561 * There's no need for any of it in case of context creation. 1562 */ 1563 if (!create && 1564 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && 1565 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE && 1566 rxfh.input_xfrm == RXH_XFRM_NO_CHANGE)) 1567 return -EINVAL; 1568 1569 indir_bytes = dev_indir_size * sizeof(rxfh_dev.indir[0]); 1570 1571 /* Check settings which may be global rather than per RSS-context */ 1572 if (rxfh.rss_context && !ops->rxfh_per_ctx_key) 1573 if (rxfh.key_size || 1574 (rxfh.hfunc && rxfh.hfunc != ETH_RSS_HASH_NO_CHANGE) || 1575 (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_NO_CHANGE)) 1576 return -EOPNOTSUPP; 1577 1578 rss_config = kzalloc(indir_bytes + dev_key_size, GFP_USER); 1579 if (!rss_config) 1580 return -ENOMEM; 1581 1582 rx_rings.cmd = ETHTOOL_GRXRINGS; 1583 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1584 if (ret) 1585 goto out_free; 1586 1587 /* rxfh.indir_size == 0 means reset the indir table to default (master 1588 * context) or delete the context (other RSS contexts). 1589 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. 1590 */ 1591 if (rxfh.indir_size && 1592 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { 1593 user_indir_len = indir_bytes; 1594 rxfh_dev.indir = (u32 *)rss_config; 1595 rxfh_dev.indir_size = dev_indir_size; 1596 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1597 useraddr + rss_cfg_offset, 1598 &rx_rings, 1599 rxfh.indir_size); 1600 if (ret) 1601 goto out_free; 1602 } else if (rxfh.indir_size == 0) { 1603 if (rxfh.rss_context == 0) { 1604 u32 *indir; 1605 1606 rxfh_dev.indir = (u32 *)rss_config; 1607 rxfh_dev.indir_size = dev_indir_size; 1608 indir = rxfh_dev.indir; 1609 for (i = 0; i < dev_indir_size; i++) 1610 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1611 } else { 1612 rxfh_dev.rss_delete = true; 1613 } 1614 } 1615 1616 if (rxfh.key_size) { 1617 rxfh_dev.key_size = dev_key_size; 1618 rxfh_dev.key = rss_config + indir_bytes; 1619 if (copy_from_user(rxfh_dev.key, 1620 useraddr + rss_cfg_offset + user_indir_len, 1621 rxfh.key_size)) { 1622 ret = -EFAULT; 1623 goto out_free; 1624 } 1625 } 1626 1627 mutex_lock(&dev->ethtool->rss_lock); 1628 1629 ret = ethtool_check_flow_types(dev, rxfh.input_xfrm); 1630 if (ret) 1631 goto out_unlock; 1632 1633 if (rxfh.rss_context && rxfh_dev.rss_delete) { 1634 ret = ethtool_check_rss_ctx_busy(dev, rxfh.rss_context); 1635 if (ret) 1636 goto out_unlock; 1637 } 1638 1639 if (create) { 1640 u32 limit, ctx_id; 1641 1642 if (rxfh_dev.rss_delete) { 1643 ret = -EINVAL; 1644 goto out_unlock; 1645 } 1646 ctx = ethtool_rxfh_ctx_alloc(ops, dev_indir_size, dev_key_size); 1647 if (!ctx) { 1648 ret = -ENOMEM; 1649 goto out_unlock; 1650 } 1651 1652 limit = ops->rxfh_max_num_contexts ?: U32_MAX; 1653 ret = xa_alloc(&dev->ethtool->rss_ctx, &ctx_id, ctx, 1654 XA_LIMIT(1, limit - 1), GFP_KERNEL_ACCOUNT); 1655 if (ret < 0) { 1656 kfree(ctx); 1657 goto out_unlock; 1658 } 1659 WARN_ON(!ctx_id); /* can't happen */ 1660 rxfh.rss_context = ctx_id; 1661 } else if (rxfh.rss_context) { 1662 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1663 if (!ctx) { 1664 ret = -ENOENT; 1665 goto out_unlock; 1666 } 1667 } 1668 rxfh_dev.hfunc = rxfh.hfunc; 1669 rxfh_dev.rss_context = rxfh.rss_context; 1670 rxfh_dev.input_xfrm = rxfh.input_xfrm; 1671 1672 if (!rxfh.rss_context) { 1673 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1674 } else if (create) { 1675 ret = ops->create_rxfh_context(dev, ctx, &rxfh_dev, extack); 1676 /* Make sure driver populates defaults */ 1677 WARN_ON_ONCE(!ret && !rxfh_dev.key && ops->rxfh_per_ctx_key && 1678 !memchr_inv(ethtool_rxfh_context_key(ctx), 0, 1679 ctx->key_size)); 1680 } else if (rxfh_dev.rss_delete) { 1681 ret = ops->remove_rxfh_context(dev, ctx, rxfh.rss_context, 1682 extack); 1683 } else { 1684 ret = ops->modify_rxfh_context(dev, ctx, &rxfh_dev, extack); 1685 } 1686 if (ret) { 1687 if (create) { 1688 /* failed to create, free our new tracking entry */ 1689 xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context); 1690 kfree(ctx); 1691 } 1692 goto out_unlock; 1693 } 1694 mod = !create && !rxfh_dev.rss_delete; 1695 1696 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), 1697 &rxfh_dev.rss_context, sizeof(rxfh_dev.rss_context))) 1698 ret = -EFAULT; 1699 1700 if (!rxfh_dev.rss_context) { 1701 /* indicate whether rxfh was set to default */ 1702 if (rxfh.indir_size == 0) 1703 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1704 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1705 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1706 } 1707 /* Update rss_ctx tracking */ 1708 if (rxfh_dev.rss_delete) { 1709 WARN_ON(xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context) != ctx); 1710 kfree(ctx); 1711 } else if (ctx) { 1712 if (rxfh_dev.indir) { 1713 for (i = 0; i < dev_indir_size; i++) 1714 ethtool_rxfh_context_indir(ctx)[i] = rxfh_dev.indir[i]; 1715 ctx->indir_configured = 1716 rxfh.indir_size && 1717 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE; 1718 } 1719 if (rxfh_dev.key) { 1720 memcpy(ethtool_rxfh_context_key(ctx), rxfh_dev.key, 1721 dev_key_size); 1722 ctx->key_configured = !!rxfh.key_size; 1723 } 1724 if (rxfh_dev.hfunc != ETH_RSS_HASH_NO_CHANGE) 1725 ctx->hfunc = rxfh_dev.hfunc; 1726 if (rxfh_dev.input_xfrm != RXH_XFRM_NO_CHANGE) 1727 ctx->input_xfrm = rxfh_dev.input_xfrm; 1728 } 1729 1730 out_unlock: 1731 mutex_unlock(&dev->ethtool->rss_lock); 1732 out_free: 1733 kfree(rss_config); 1734 if (mod) 1735 ethtool_rss_notify(dev, rxfh.rss_context); 1736 return ret; 1737 } 1738 1739 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) 1740 { 1741 struct ethtool_regs regs; 1742 const struct ethtool_ops *ops = dev->ethtool_ops; 1743 void *regbuf; 1744 int reglen, ret; 1745 1746 if (!ops->get_regs || !ops->get_regs_len) 1747 return -EOPNOTSUPP; 1748 1749 if (copy_from_user(®s, useraddr, sizeof(regs))) 1750 return -EFAULT; 1751 1752 reglen = ops->get_regs_len(dev); 1753 if (reglen <= 0) 1754 return reglen; 1755 1756 if (regs.len > reglen) 1757 regs.len = reglen; 1758 1759 regbuf = vzalloc(reglen); 1760 if (!regbuf) 1761 return -ENOMEM; 1762 1763 if (regs.len < reglen) 1764 reglen = regs.len; 1765 1766 ops->get_regs(dev, ®s, regbuf); 1767 1768 ret = -EFAULT; 1769 if (copy_to_user(useraddr, ®s, sizeof(regs))) 1770 goto out; 1771 useraddr += offsetof(struct ethtool_regs, data); 1772 if (copy_to_user(useraddr, regbuf, reglen)) 1773 goto out; 1774 ret = 0; 1775 1776 out: 1777 vfree(regbuf); 1778 return ret; 1779 } 1780 1781 static int ethtool_reset(struct net_device *dev, char __user *useraddr) 1782 { 1783 struct ethtool_value reset; 1784 int ret; 1785 1786 if (!dev->ethtool_ops->reset) 1787 return -EOPNOTSUPP; 1788 1789 if (dev->ethtool->module_fw_flash_in_progress) 1790 return -EBUSY; 1791 1792 if (copy_from_user(&reset, useraddr, sizeof(reset))) 1793 return -EFAULT; 1794 1795 ret = dev->ethtool_ops->reset(dev, &reset.data); 1796 if (ret) 1797 return ret; 1798 1799 if (copy_to_user(useraddr, &reset, sizeof(reset))) 1800 return -EFAULT; 1801 return 0; 1802 } 1803 1804 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) 1805 { 1806 struct ethtool_wolinfo wol; 1807 1808 if (!dev->ethtool_ops->get_wol) 1809 return -EOPNOTSUPP; 1810 1811 memset(&wol, 0, sizeof(struct ethtool_wolinfo)); 1812 wol.cmd = ETHTOOL_GWOL; 1813 dev->ethtool_ops->get_wol(dev, &wol); 1814 1815 if (copy_to_user(useraddr, &wol, sizeof(wol))) 1816 return -EFAULT; 1817 return 0; 1818 } 1819 1820 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) 1821 { 1822 struct ethtool_wolinfo wol, cur_wol; 1823 int ret; 1824 1825 if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol) 1826 return -EOPNOTSUPP; 1827 1828 memset(&cur_wol, 0, sizeof(struct ethtool_wolinfo)); 1829 cur_wol.cmd = ETHTOOL_GWOL; 1830 dev->ethtool_ops->get_wol(dev, &cur_wol); 1831 1832 if (copy_from_user(&wol, useraddr, sizeof(wol))) 1833 return -EFAULT; 1834 1835 if (wol.wolopts & ~cur_wol.supported) 1836 return -EINVAL; 1837 1838 if (wol.wolopts == cur_wol.wolopts && 1839 !memcmp(wol.sopass, cur_wol.sopass, sizeof(wol.sopass))) 1840 return 0; 1841 1842 ret = dev->ethtool_ops->set_wol(dev, &wol); 1843 if (ret) 1844 return ret; 1845 1846 dev->ethtool->wol_enabled = !!wol.wolopts; 1847 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF); 1848 1849 return 0; 1850 } 1851 1852 static void eee_to_keee(struct ethtool_keee *keee, 1853 const struct ethtool_eee *eee) 1854 { 1855 memset(keee, 0, sizeof(*keee)); 1856 1857 keee->eee_enabled = eee->eee_enabled; 1858 keee->tx_lpi_enabled = eee->tx_lpi_enabled; 1859 keee->tx_lpi_timer = eee->tx_lpi_timer; 1860 1861 ethtool_convert_legacy_u32_to_link_mode(keee->advertised, 1862 eee->advertised); 1863 } 1864 1865 static void keee_to_eee(struct ethtool_eee *eee, 1866 const struct ethtool_keee *keee) 1867 { 1868 bool overflow; 1869 1870 memset(eee, 0, sizeof(*eee)); 1871 1872 eee->eee_active = keee->eee_active; 1873 eee->eee_enabled = keee->eee_enabled; 1874 eee->tx_lpi_enabled = keee->tx_lpi_enabled; 1875 eee->tx_lpi_timer = keee->tx_lpi_timer; 1876 1877 overflow = !ethtool_convert_link_mode_to_legacy_u32(&eee->supported, 1878 keee->supported); 1879 ethtool_convert_link_mode_to_legacy_u32(&eee->advertised, 1880 keee->advertised); 1881 ethtool_convert_link_mode_to_legacy_u32(&eee->lp_advertised, 1882 keee->lp_advertised); 1883 if (overflow) 1884 pr_warn("Ethtool ioctl interface doesn't support passing EEE linkmodes beyond bit 32\n"); 1885 } 1886 1887 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) 1888 { 1889 struct ethtool_keee keee; 1890 struct ethtool_eee eee; 1891 int rc; 1892 1893 if (!dev->ethtool_ops->get_eee) 1894 return -EOPNOTSUPP; 1895 1896 memset(&keee, 0, sizeof(keee)); 1897 rc = dev->ethtool_ops->get_eee(dev, &keee); 1898 if (rc) 1899 return rc; 1900 1901 keee_to_eee(&eee, &keee); 1902 if (copy_to_user(useraddr, &eee, sizeof(eee))) 1903 return -EFAULT; 1904 1905 return 0; 1906 } 1907 1908 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) 1909 { 1910 struct ethtool_keee keee; 1911 struct ethtool_eee eee; 1912 int ret; 1913 1914 if (!dev->ethtool_ops->set_eee) 1915 return -EOPNOTSUPP; 1916 1917 if (copy_from_user(&eee, useraddr, sizeof(eee))) 1918 return -EFAULT; 1919 1920 eee_to_keee(&keee, &eee); 1921 ret = dev->ethtool_ops->set_eee(dev, &keee); 1922 if (!ret) 1923 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF); 1924 return ret; 1925 } 1926 1927 static int ethtool_nway_reset(struct net_device *dev) 1928 { 1929 if (!dev->ethtool_ops->nway_reset) 1930 return -EOPNOTSUPP; 1931 1932 return dev->ethtool_ops->nway_reset(dev); 1933 } 1934 1935 static int ethtool_get_link(struct net_device *dev, char __user *useraddr) 1936 { 1937 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; 1938 int link = __ethtool_get_link(dev); 1939 1940 if (link < 0) 1941 return link; 1942 1943 edata.data = link; 1944 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1945 return -EFAULT; 1946 return 0; 1947 } 1948 1949 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, 1950 int (*getter)(struct net_device *, 1951 struct ethtool_eeprom *, u8 *), 1952 u32 total_len) 1953 { 1954 struct ethtool_eeprom eeprom; 1955 void __user *userbuf = useraddr + sizeof(eeprom); 1956 u32 bytes_remaining; 1957 u8 *data; 1958 int ret = 0; 1959 1960 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1961 return -EFAULT; 1962 1963 /* Check for wrap and zero */ 1964 if (eeprom.offset + eeprom.len <= eeprom.offset) 1965 return -EINVAL; 1966 1967 /* Check for exceeding total eeprom len */ 1968 if (eeprom.offset + eeprom.len > total_len) 1969 return -EINVAL; 1970 1971 data = kzalloc(PAGE_SIZE, GFP_USER); 1972 if (!data) 1973 return -ENOMEM; 1974 1975 bytes_remaining = eeprom.len; 1976 while (bytes_remaining > 0) { 1977 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1978 1979 ret = getter(dev, &eeprom, data); 1980 if (ret) 1981 break; 1982 if (!eeprom.len) { 1983 ret = -EIO; 1984 break; 1985 } 1986 if (copy_to_user(userbuf, data, eeprom.len)) { 1987 ret = -EFAULT; 1988 break; 1989 } 1990 userbuf += eeprom.len; 1991 eeprom.offset += eeprom.len; 1992 bytes_remaining -= eeprom.len; 1993 } 1994 1995 eeprom.len = userbuf - (useraddr + sizeof(eeprom)); 1996 eeprom.offset -= eeprom.len; 1997 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) 1998 ret = -EFAULT; 1999 2000 kfree(data); 2001 return ret; 2002 } 2003 2004 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) 2005 { 2006 const struct ethtool_ops *ops = dev->ethtool_ops; 2007 2008 if (!ops->get_eeprom || !ops->get_eeprom_len || 2009 !ops->get_eeprom_len(dev)) 2010 return -EOPNOTSUPP; 2011 2012 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, 2013 ops->get_eeprom_len(dev)); 2014 } 2015 2016 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) 2017 { 2018 struct ethtool_eeprom eeprom; 2019 const struct ethtool_ops *ops = dev->ethtool_ops; 2020 void __user *userbuf = useraddr + sizeof(eeprom); 2021 u32 bytes_remaining; 2022 u8 *data; 2023 int ret = 0; 2024 2025 if (!ops->set_eeprom || !ops->get_eeprom_len || 2026 !ops->get_eeprom_len(dev)) 2027 return -EOPNOTSUPP; 2028 2029 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 2030 return -EFAULT; 2031 2032 /* Check for wrap and zero */ 2033 if (eeprom.offset + eeprom.len <= eeprom.offset) 2034 return -EINVAL; 2035 2036 /* Check for exceeding total eeprom len */ 2037 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) 2038 return -EINVAL; 2039 2040 data = kzalloc(PAGE_SIZE, GFP_USER); 2041 if (!data) 2042 return -ENOMEM; 2043 2044 bytes_remaining = eeprom.len; 2045 while (bytes_remaining > 0) { 2046 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 2047 2048 if (copy_from_user(data, userbuf, eeprom.len)) { 2049 ret = -EFAULT; 2050 break; 2051 } 2052 ret = ops->set_eeprom(dev, &eeprom, data); 2053 if (ret) 2054 break; 2055 userbuf += eeprom.len; 2056 eeprom.offset += eeprom.len; 2057 bytes_remaining -= eeprom.len; 2058 } 2059 2060 kfree(data); 2061 return ret; 2062 } 2063 2064 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, 2065 void __user *useraddr) 2066 { 2067 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2068 struct kernel_ethtool_coalesce kernel_coalesce = {}; 2069 int ret; 2070 2071 if (!dev->ethtool_ops->get_coalesce) 2072 return -EOPNOTSUPP; 2073 2074 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 2075 NULL); 2076 if (ret) 2077 return ret; 2078 2079 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2080 return -EFAULT; 2081 return 0; 2082 } 2083 2084 static bool 2085 ethtool_set_coalesce_supported(struct net_device *dev, 2086 struct ethtool_coalesce *coalesce) 2087 { 2088 u32 supported_params = dev->ethtool_ops->supported_coalesce_params; 2089 u32 nonzero_params = 0; 2090 2091 if (coalesce->rx_coalesce_usecs) 2092 nonzero_params |= ETHTOOL_COALESCE_RX_USECS; 2093 if (coalesce->rx_max_coalesced_frames) 2094 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; 2095 if (coalesce->rx_coalesce_usecs_irq) 2096 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; 2097 if (coalesce->rx_max_coalesced_frames_irq) 2098 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; 2099 if (coalesce->tx_coalesce_usecs) 2100 nonzero_params |= ETHTOOL_COALESCE_TX_USECS; 2101 if (coalesce->tx_max_coalesced_frames) 2102 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; 2103 if (coalesce->tx_coalesce_usecs_irq) 2104 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; 2105 if (coalesce->tx_max_coalesced_frames_irq) 2106 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; 2107 if (coalesce->stats_block_coalesce_usecs) 2108 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; 2109 if (coalesce->use_adaptive_rx_coalesce) 2110 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; 2111 if (coalesce->use_adaptive_tx_coalesce) 2112 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; 2113 if (coalesce->pkt_rate_low) 2114 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; 2115 if (coalesce->rx_coalesce_usecs_low) 2116 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; 2117 if (coalesce->rx_max_coalesced_frames_low) 2118 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; 2119 if (coalesce->tx_coalesce_usecs_low) 2120 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; 2121 if (coalesce->tx_max_coalesced_frames_low) 2122 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; 2123 if (coalesce->pkt_rate_high) 2124 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; 2125 if (coalesce->rx_coalesce_usecs_high) 2126 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; 2127 if (coalesce->rx_max_coalesced_frames_high) 2128 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; 2129 if (coalesce->tx_coalesce_usecs_high) 2130 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; 2131 if (coalesce->tx_max_coalesced_frames_high) 2132 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; 2133 if (coalesce->rate_sample_interval) 2134 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; 2135 2136 return (supported_params & nonzero_params) == nonzero_params; 2137 } 2138 2139 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, 2140 void __user *useraddr) 2141 { 2142 struct kernel_ethtool_coalesce kernel_coalesce = {}; 2143 struct ethtool_coalesce coalesce; 2144 int ret; 2145 2146 if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce) 2147 return -EOPNOTSUPP; 2148 2149 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 2150 NULL); 2151 if (ret) 2152 return ret; 2153 2154 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) 2155 return -EFAULT; 2156 2157 if (!ethtool_set_coalesce_supported(dev, &coalesce)) 2158 return -EOPNOTSUPP; 2159 2160 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, 2161 NULL); 2162 if (!ret) 2163 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF); 2164 return ret; 2165 } 2166 2167 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) 2168 { 2169 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; 2170 struct kernel_ethtool_ringparam kernel_ringparam = {}; 2171 2172 if (!dev->ethtool_ops->get_ringparam) 2173 return -EOPNOTSUPP; 2174 2175 dev->ethtool_ops->get_ringparam(dev, &ringparam, 2176 &kernel_ringparam, NULL); 2177 2178 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) 2179 return -EFAULT; 2180 return 0; 2181 } 2182 2183 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) 2184 { 2185 struct kernel_ethtool_ringparam kernel_ringparam; 2186 struct ethtool_ringparam ringparam, max; 2187 int ret; 2188 2189 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) 2190 return -EOPNOTSUPP; 2191 2192 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) 2193 return -EFAULT; 2194 2195 ethtool_ringparam_get_cfg(dev, &max, &kernel_ringparam, NULL); 2196 2197 /* ensure new ring parameters are within the maximums */ 2198 if (ringparam.rx_pending > max.rx_max_pending || 2199 ringparam.rx_mini_pending > max.rx_mini_max_pending || 2200 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || 2201 ringparam.tx_pending > max.tx_max_pending) 2202 return -EINVAL; 2203 2204 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, 2205 &kernel_ringparam, NULL); 2206 if (!ret) 2207 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF); 2208 return ret; 2209 } 2210 2211 static noinline_for_stack int ethtool_get_channels(struct net_device *dev, 2212 void __user *useraddr) 2213 { 2214 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; 2215 2216 if (!dev->ethtool_ops->get_channels) 2217 return -EOPNOTSUPP; 2218 2219 dev->ethtool_ops->get_channels(dev, &channels); 2220 2221 if (copy_to_user(useraddr, &channels, sizeof(channels))) 2222 return -EFAULT; 2223 return 0; 2224 } 2225 2226 static noinline_for_stack int ethtool_set_channels(struct net_device *dev, 2227 void __user *useraddr) 2228 { 2229 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; 2230 u16 from_channel, to_channel; 2231 unsigned int i; 2232 int ret; 2233 2234 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) 2235 return -EOPNOTSUPP; 2236 2237 if (copy_from_user(&channels, useraddr, sizeof(channels))) 2238 return -EFAULT; 2239 2240 dev->ethtool_ops->get_channels(dev, &curr); 2241 2242 if (channels.rx_count == curr.rx_count && 2243 channels.tx_count == curr.tx_count && 2244 channels.combined_count == curr.combined_count && 2245 channels.other_count == curr.other_count) 2246 return 0; 2247 2248 /* ensure new counts are within the maximums */ 2249 if (channels.rx_count > curr.max_rx || 2250 channels.tx_count > curr.max_tx || 2251 channels.combined_count > curr.max_combined || 2252 channels.other_count > curr.max_other) 2253 return -EINVAL; 2254 2255 /* ensure there is at least one RX and one TX channel */ 2256 if (!channels.combined_count && 2257 (!channels.rx_count || !channels.tx_count)) 2258 return -EINVAL; 2259 2260 ret = ethtool_check_max_channel(dev, channels, NULL); 2261 if (ret) 2262 return ret; 2263 2264 /* Disabling channels, query zero-copy AF_XDP sockets */ 2265 from_channel = channels.combined_count + 2266 min(channels.rx_count, channels.tx_count); 2267 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); 2268 for (i = from_channel; i < to_channel; i++) 2269 if (xsk_get_pool_from_qid(dev, i)) 2270 return -EINVAL; 2271 2272 ret = dev->ethtool_ops->set_channels(dev, &channels); 2273 if (!ret) 2274 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF); 2275 return ret; 2276 } 2277 2278 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) 2279 { 2280 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; 2281 2282 if (!dev->ethtool_ops->get_pauseparam) 2283 return -EOPNOTSUPP; 2284 2285 dev->ethtool_ops->get_pauseparam(dev, &pauseparam); 2286 2287 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) 2288 return -EFAULT; 2289 return 0; 2290 } 2291 2292 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) 2293 { 2294 struct ethtool_pauseparam pauseparam; 2295 int ret; 2296 2297 if (!dev->ethtool_ops->set_pauseparam) 2298 return -EOPNOTSUPP; 2299 2300 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) 2301 return -EFAULT; 2302 2303 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); 2304 if (!ret) 2305 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF); 2306 return ret; 2307 } 2308 2309 static int ethtool_self_test(struct net_device *dev, char __user *useraddr) 2310 { 2311 struct ethtool_test test; 2312 const struct ethtool_ops *ops = dev->ethtool_ops; 2313 u64 *data; 2314 int ret, test_len; 2315 2316 if (!ops->self_test || !ops->get_sset_count) 2317 return -EOPNOTSUPP; 2318 2319 test_len = ops->get_sset_count(dev, ETH_SS_TEST); 2320 if (test_len < 0) 2321 return test_len; 2322 WARN_ON(test_len == 0); 2323 2324 if (copy_from_user(&test, useraddr, sizeof(test))) 2325 return -EFAULT; 2326 2327 test.len = test_len; 2328 data = kcalloc(test_len, sizeof(u64), GFP_USER); 2329 if (!data) 2330 return -ENOMEM; 2331 2332 netif_testing_on(dev); 2333 ops->self_test(dev, &test, data); 2334 netif_testing_off(dev); 2335 2336 ret = -EFAULT; 2337 if (copy_to_user(useraddr, &test, sizeof(test))) 2338 goto out; 2339 useraddr += sizeof(test); 2340 if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) 2341 goto out; 2342 ret = 0; 2343 2344 out: 2345 kfree(data); 2346 return ret; 2347 } 2348 2349 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) 2350 { 2351 struct ethtool_gstrings gstrings; 2352 u8 *data; 2353 int ret; 2354 2355 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) 2356 return -EFAULT; 2357 2358 ret = __ethtool_get_sset_count(dev, gstrings.string_set); 2359 if (ret < 0) 2360 return ret; 2361 if (ret > S32_MAX / ETH_GSTRING_LEN) 2362 return -ENOMEM; 2363 WARN_ON_ONCE(!ret); 2364 2365 gstrings.len = ret; 2366 2367 if (gstrings.len) { 2368 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); 2369 if (!data) 2370 return -ENOMEM; 2371 2372 __ethtool_get_strings(dev, gstrings.string_set, data); 2373 } else { 2374 data = NULL; 2375 } 2376 2377 ret = -EFAULT; 2378 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) 2379 goto out; 2380 useraddr += sizeof(gstrings); 2381 if (gstrings.len && 2382 copy_to_user(useraddr, data, 2383 array_size(gstrings.len, ETH_GSTRING_LEN))) 2384 goto out; 2385 ret = 0; 2386 2387 out: 2388 vfree(data); 2389 return ret; 2390 } 2391 2392 __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) 2393 { 2394 va_list args; 2395 2396 va_start(args, fmt); 2397 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); 2398 va_end(args); 2399 2400 *data += ETH_GSTRING_LEN; 2401 } 2402 EXPORT_SYMBOL(ethtool_sprintf); 2403 2404 void ethtool_puts(u8 **data, const char *str) 2405 { 2406 strscpy(*data, str, ETH_GSTRING_LEN); 2407 *data += ETH_GSTRING_LEN; 2408 } 2409 EXPORT_SYMBOL(ethtool_puts); 2410 2411 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) 2412 { 2413 struct ethtool_value id; 2414 static bool busy; 2415 const struct ethtool_ops *ops = dev->ethtool_ops; 2416 netdevice_tracker dev_tracker; 2417 int rc; 2418 2419 if (!ops->set_phys_id) 2420 return -EOPNOTSUPP; 2421 2422 if (busy) 2423 return -EBUSY; 2424 2425 if (copy_from_user(&id, useraddr, sizeof(id))) 2426 return -EFAULT; 2427 2428 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); 2429 if (rc < 0) 2430 return rc; 2431 2432 /* Drop the RTNL lock while waiting, but prevent reentry or 2433 * removal of the device. 2434 */ 2435 busy = true; 2436 netdev_hold(dev, &dev_tracker, GFP_KERNEL); 2437 netdev_unlock_ops(dev); 2438 rtnl_unlock(); 2439 2440 if (rc == 0) { 2441 /* Driver will handle this itself */ 2442 schedule_timeout_interruptible( 2443 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); 2444 } else { 2445 /* Driver expects to be called at twice the frequency in rc */ 2446 int n = rc * 2, interval = HZ / n; 2447 u64 count = mul_u32_u32(n, id.data); 2448 u64 i = 0; 2449 2450 do { 2451 rtnl_lock(); 2452 netdev_lock_ops(dev); 2453 rc = ops->set_phys_id(dev, 2454 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); 2455 netdev_unlock_ops(dev); 2456 rtnl_unlock(); 2457 if (rc) 2458 break; 2459 schedule_timeout_interruptible(interval); 2460 } while (!signal_pending(current) && (!id.data || i < count)); 2461 } 2462 2463 rtnl_lock(); 2464 netdev_lock_ops(dev); 2465 netdev_put(dev, &dev_tracker); 2466 busy = false; 2467 2468 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); 2469 return rc; 2470 } 2471 2472 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) 2473 { 2474 struct ethtool_stats stats; 2475 const struct ethtool_ops *ops = dev->ethtool_ops; 2476 u64 *data; 2477 int ret, n_stats; 2478 2479 if (!ops->get_ethtool_stats || !ops->get_sset_count) 2480 return -EOPNOTSUPP; 2481 2482 n_stats = ops->get_sset_count(dev, ETH_SS_STATS); 2483 if (n_stats < 0) 2484 return n_stats; 2485 if (n_stats > S32_MAX / sizeof(u64)) 2486 return -ENOMEM; 2487 WARN_ON_ONCE(!n_stats); 2488 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2489 return -EFAULT; 2490 2491 stats.n_stats = n_stats; 2492 2493 if (n_stats) { 2494 data = vzalloc(array_size(n_stats, sizeof(u64))); 2495 if (!data) 2496 return -ENOMEM; 2497 ops->get_ethtool_stats(dev, &stats, data); 2498 } else { 2499 data = NULL; 2500 } 2501 2502 ret = -EFAULT; 2503 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2504 goto out; 2505 useraddr += sizeof(stats); 2506 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) 2507 goto out; 2508 ret = 0; 2509 2510 out: 2511 vfree(data); 2512 return ret; 2513 } 2514 2515 static int ethtool_vzalloc_stats_array(int n_stats, u64 **data) 2516 { 2517 if (n_stats < 0) 2518 return n_stats; 2519 if (n_stats > S32_MAX / sizeof(u64)) 2520 return -ENOMEM; 2521 if (WARN_ON_ONCE(!n_stats)) 2522 return -EOPNOTSUPP; 2523 2524 *data = vzalloc(array_size(n_stats, sizeof(u64))); 2525 if (!*data) 2526 return -ENOMEM; 2527 2528 return 0; 2529 } 2530 2531 static int ethtool_get_phy_stats_phydev(struct phy_device *phydev, 2532 struct ethtool_stats *stats, 2533 u64 **data) 2534 { 2535 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 2536 int n_stats, ret; 2537 2538 if (!phy_ops || !phy_ops->get_sset_count || !phy_ops->get_stats) 2539 return -EOPNOTSUPP; 2540 2541 n_stats = phy_ops->get_sset_count(phydev); 2542 2543 ret = ethtool_vzalloc_stats_array(n_stats, data); 2544 if (ret) 2545 return ret; 2546 2547 stats->n_stats = n_stats; 2548 return phy_ops->get_stats(phydev, stats, *data); 2549 } 2550 2551 static int ethtool_get_phy_stats_ethtool(struct net_device *dev, 2552 struct ethtool_stats *stats, 2553 u64 **data) 2554 { 2555 const struct ethtool_ops *ops = dev->ethtool_ops; 2556 int n_stats, ret; 2557 2558 if (!ops || !ops->get_sset_count || !ops->get_ethtool_phy_stats) 2559 return -EOPNOTSUPP; 2560 2561 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); 2562 2563 ret = ethtool_vzalloc_stats_array(n_stats, data); 2564 if (ret) 2565 return ret; 2566 2567 stats->n_stats = n_stats; 2568 ops->get_ethtool_phy_stats(dev, stats, *data); 2569 2570 return 0; 2571 } 2572 2573 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) 2574 { 2575 struct phy_device *phydev = dev->phydev; 2576 struct ethtool_stats stats; 2577 u64 *data = NULL; 2578 int ret = -EOPNOTSUPP; 2579 2580 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2581 return -EFAULT; 2582 2583 if (phydev) 2584 ret = ethtool_get_phy_stats_phydev(phydev, &stats, &data); 2585 2586 if (ret == -EOPNOTSUPP) 2587 ret = ethtool_get_phy_stats_ethtool(dev, &stats, &data); 2588 2589 if (ret) 2590 goto out; 2591 2592 if (copy_to_user(useraddr, &stats, sizeof(stats))) { 2593 ret = -EFAULT; 2594 goto out; 2595 } 2596 2597 useraddr += sizeof(stats); 2598 if (copy_to_user(useraddr, data, array_size(stats.n_stats, sizeof(u64)))) 2599 ret = -EFAULT; 2600 2601 out: 2602 vfree(data); 2603 return ret; 2604 } 2605 2606 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) 2607 { 2608 struct ethtool_perm_addr epaddr; 2609 2610 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) 2611 return -EFAULT; 2612 2613 if (epaddr.size < dev->addr_len) 2614 return -ETOOSMALL; 2615 epaddr.size = dev->addr_len; 2616 2617 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) 2618 return -EFAULT; 2619 useraddr += sizeof(epaddr); 2620 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) 2621 return -EFAULT; 2622 return 0; 2623 } 2624 2625 static int ethtool_get_value(struct net_device *dev, char __user *useraddr, 2626 u32 cmd, u32 (*actor)(struct net_device *)) 2627 { 2628 struct ethtool_value edata = { .cmd = cmd }; 2629 2630 if (!actor) 2631 return -EOPNOTSUPP; 2632 2633 edata.data = actor(dev); 2634 2635 if (copy_to_user(useraddr, &edata, sizeof(edata))) 2636 return -EFAULT; 2637 return 0; 2638 } 2639 2640 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, 2641 void (*actor)(struct net_device *, u32)) 2642 { 2643 struct ethtool_value edata; 2644 2645 if (!actor) 2646 return -EOPNOTSUPP; 2647 2648 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2649 return -EFAULT; 2650 2651 actor(dev, edata.data); 2652 return 0; 2653 } 2654 2655 static int ethtool_set_value(struct net_device *dev, char __user *useraddr, 2656 int (*actor)(struct net_device *, u32)) 2657 { 2658 struct ethtool_value edata; 2659 2660 if (!actor) 2661 return -EOPNOTSUPP; 2662 2663 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2664 return -EFAULT; 2665 2666 return actor(dev, edata.data); 2667 } 2668 2669 static int 2670 ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) 2671 { 2672 if (!dev->ethtool_ops->flash_device) { 2673 req->devlink = netdev_to_devlink_get(dev); 2674 return 0; 2675 } 2676 2677 return dev->ethtool_ops->flash_device(dev, &req->efl); 2678 } 2679 2680 static int ethtool_set_dump(struct net_device *dev, 2681 void __user *useraddr) 2682 { 2683 struct ethtool_dump dump; 2684 2685 if (!dev->ethtool_ops->set_dump) 2686 return -EOPNOTSUPP; 2687 2688 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2689 return -EFAULT; 2690 2691 return dev->ethtool_ops->set_dump(dev, &dump); 2692 } 2693 2694 static int ethtool_get_dump_flag(struct net_device *dev, 2695 void __user *useraddr) 2696 { 2697 int ret; 2698 struct ethtool_dump dump; 2699 const struct ethtool_ops *ops = dev->ethtool_ops; 2700 2701 if (!ops->get_dump_flag) 2702 return -EOPNOTSUPP; 2703 2704 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2705 return -EFAULT; 2706 2707 ret = ops->get_dump_flag(dev, &dump); 2708 if (ret) 2709 return ret; 2710 2711 if (copy_to_user(useraddr, &dump, sizeof(dump))) 2712 return -EFAULT; 2713 return 0; 2714 } 2715 2716 static int ethtool_get_dump_data(struct net_device *dev, 2717 void __user *useraddr) 2718 { 2719 int ret; 2720 __u32 len; 2721 struct ethtool_dump dump, tmp; 2722 const struct ethtool_ops *ops = dev->ethtool_ops; 2723 void *data = NULL; 2724 2725 if (!ops->get_dump_data || !ops->get_dump_flag) 2726 return -EOPNOTSUPP; 2727 2728 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2729 return -EFAULT; 2730 2731 memset(&tmp, 0, sizeof(tmp)); 2732 tmp.cmd = ETHTOOL_GET_DUMP_FLAG; 2733 ret = ops->get_dump_flag(dev, &tmp); 2734 if (ret) 2735 return ret; 2736 2737 len = min(tmp.len, dump.len); 2738 if (!len) 2739 return -EFAULT; 2740 2741 /* Don't ever let the driver think there's more space available 2742 * than it requested with .get_dump_flag(). 2743 */ 2744 dump.len = len; 2745 2746 /* Always allocate enough space to hold the whole thing so that the 2747 * driver does not need to check the length and bother with partial 2748 * dumping. 2749 */ 2750 data = vzalloc(tmp.len); 2751 if (!data) 2752 return -ENOMEM; 2753 ret = ops->get_dump_data(dev, &dump, data); 2754 if (ret) 2755 goto out; 2756 2757 /* There are two sane possibilities: 2758 * 1. The driver's .get_dump_data() does not touch dump.len. 2759 * 2. Or it may set dump.len to how much it really writes, which 2760 * should be tmp.len (or len if it can do a partial dump). 2761 * In any case respond to userspace with the actual length of data 2762 * it's receiving. 2763 */ 2764 WARN_ON(dump.len != len && dump.len != tmp.len); 2765 dump.len = len; 2766 2767 if (copy_to_user(useraddr, &dump, sizeof(dump))) { 2768 ret = -EFAULT; 2769 goto out; 2770 } 2771 useraddr += offsetof(struct ethtool_dump, data); 2772 if (copy_to_user(useraddr, data, len)) 2773 ret = -EFAULT; 2774 out: 2775 vfree(data); 2776 return ret; 2777 } 2778 2779 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) 2780 { 2781 struct kernel_ethtool_ts_info kernel_info; 2782 struct ethtool_ts_info info = {}; 2783 int err; 2784 2785 err = __ethtool_get_ts_info(dev, &kernel_info); 2786 if (err) 2787 return err; 2788 2789 info.cmd = kernel_info.cmd; 2790 info.so_timestamping = kernel_info.so_timestamping; 2791 info.phc_index = kernel_info.phc_index; 2792 info.tx_types = kernel_info.tx_types; 2793 info.rx_filters = kernel_info.rx_filters; 2794 2795 if (copy_to_user(useraddr, &info, sizeof(info))) 2796 return -EFAULT; 2797 2798 return 0; 2799 } 2800 2801 int ethtool_get_module_info_call(struct net_device *dev, 2802 struct ethtool_modinfo *modinfo) 2803 { 2804 const struct ethtool_ops *ops = dev->ethtool_ops; 2805 struct phy_device *phydev = dev->phydev; 2806 2807 if (dev->ethtool->module_fw_flash_in_progress) 2808 return -EBUSY; 2809 2810 if (dev->sfp_bus) 2811 return sfp_get_module_info(dev->sfp_bus, modinfo); 2812 2813 if (phydev && phydev->drv && phydev->drv->module_info) 2814 return phydev->drv->module_info(phydev, modinfo); 2815 2816 if (ops->get_module_info) 2817 return ops->get_module_info(dev, modinfo); 2818 2819 return -EOPNOTSUPP; 2820 } 2821 2822 static int ethtool_get_module_info(struct net_device *dev, 2823 void __user *useraddr) 2824 { 2825 int ret; 2826 struct ethtool_modinfo modinfo; 2827 2828 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) 2829 return -EFAULT; 2830 2831 ret = ethtool_get_module_info_call(dev, &modinfo); 2832 if (ret) 2833 return ret; 2834 2835 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) 2836 return -EFAULT; 2837 2838 return 0; 2839 } 2840 2841 int ethtool_get_module_eeprom_call(struct net_device *dev, 2842 struct ethtool_eeprom *ee, u8 *data) 2843 { 2844 const struct ethtool_ops *ops = dev->ethtool_ops; 2845 struct phy_device *phydev = dev->phydev; 2846 2847 if (dev->ethtool->module_fw_flash_in_progress) 2848 return -EBUSY; 2849 2850 if (dev->sfp_bus) 2851 return sfp_get_module_eeprom(dev->sfp_bus, ee, data); 2852 2853 if (phydev && phydev->drv && phydev->drv->module_eeprom) 2854 return phydev->drv->module_eeprom(phydev, ee, data); 2855 2856 if (ops->get_module_eeprom) 2857 return ops->get_module_eeprom(dev, ee, data); 2858 2859 return -EOPNOTSUPP; 2860 } 2861 2862 static int ethtool_get_module_eeprom(struct net_device *dev, 2863 void __user *useraddr) 2864 { 2865 int ret; 2866 struct ethtool_modinfo modinfo; 2867 2868 ret = ethtool_get_module_info_call(dev, &modinfo); 2869 if (ret) 2870 return ret; 2871 2872 return ethtool_get_any_eeprom(dev, useraddr, 2873 ethtool_get_module_eeprom_call, 2874 modinfo.eeprom_len); 2875 } 2876 2877 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) 2878 { 2879 switch (tuna->id) { 2880 case ETHTOOL_RX_COPYBREAK: 2881 case ETHTOOL_TX_COPYBREAK: 2882 case ETHTOOL_TX_COPYBREAK_BUF_SIZE: 2883 if (tuna->len != sizeof(u32) || 2884 tuna->type_id != ETHTOOL_TUNABLE_U32) 2885 return -EINVAL; 2886 break; 2887 case ETHTOOL_PFC_PREVENTION_TOUT: 2888 if (tuna->len != sizeof(u16) || 2889 tuna->type_id != ETHTOOL_TUNABLE_U16) 2890 return -EINVAL; 2891 break; 2892 default: 2893 return -EINVAL; 2894 } 2895 2896 return 0; 2897 } 2898 2899 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) 2900 { 2901 int ret; 2902 struct ethtool_tunable tuna; 2903 const struct ethtool_ops *ops = dev->ethtool_ops; 2904 void *data; 2905 2906 if (!ops->get_tunable) 2907 return -EOPNOTSUPP; 2908 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2909 return -EFAULT; 2910 ret = ethtool_tunable_valid(&tuna); 2911 if (ret) 2912 return ret; 2913 data = kzalloc(tuna.len, GFP_USER); 2914 if (!data) 2915 return -ENOMEM; 2916 ret = ops->get_tunable(dev, &tuna, data); 2917 if (ret) 2918 goto out; 2919 useraddr += sizeof(tuna); 2920 ret = -EFAULT; 2921 if (copy_to_user(useraddr, data, tuna.len)) 2922 goto out; 2923 ret = 0; 2924 2925 out: 2926 kfree(data); 2927 return ret; 2928 } 2929 2930 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) 2931 { 2932 int ret; 2933 struct ethtool_tunable tuna; 2934 const struct ethtool_ops *ops = dev->ethtool_ops; 2935 void *data; 2936 2937 if (!ops->set_tunable) 2938 return -EOPNOTSUPP; 2939 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2940 return -EFAULT; 2941 ret = ethtool_tunable_valid(&tuna); 2942 if (ret) 2943 return ret; 2944 useraddr += sizeof(tuna); 2945 data = memdup_user(useraddr, tuna.len); 2946 if (IS_ERR(data)) 2947 return PTR_ERR(data); 2948 ret = ops->set_tunable(dev, &tuna, data); 2949 2950 kfree(data); 2951 return ret; 2952 } 2953 2954 static noinline_for_stack int 2955 ethtool_get_per_queue_coalesce(struct net_device *dev, 2956 void __user *useraddr, 2957 struct ethtool_per_queue_op *per_queue_opt) 2958 { 2959 u32 bit; 2960 int ret; 2961 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2962 2963 if (!dev->ethtool_ops->get_per_queue_coalesce) 2964 return -EOPNOTSUPP; 2965 2966 useraddr += sizeof(*per_queue_opt); 2967 2968 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, 2969 MAX_NUM_QUEUE); 2970 2971 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2972 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2973 2974 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); 2975 if (ret != 0) 2976 return ret; 2977 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2978 return -EFAULT; 2979 useraddr += sizeof(coalesce); 2980 } 2981 2982 return 0; 2983 } 2984 2985 static noinline_for_stack int 2986 ethtool_set_per_queue_coalesce(struct net_device *dev, 2987 void __user *useraddr, 2988 struct ethtool_per_queue_op *per_queue_opt) 2989 { 2990 u32 bit; 2991 int i, ret = 0; 2992 int n_queue; 2993 struct ethtool_coalesce *backup = NULL, *tmp = NULL; 2994 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2995 2996 if ((!dev->ethtool_ops->set_per_queue_coalesce) || 2997 (!dev->ethtool_ops->get_per_queue_coalesce)) 2998 return -EOPNOTSUPP; 2999 3000 useraddr += sizeof(*per_queue_opt); 3001 3002 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); 3003 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); 3004 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); 3005 if (!backup) 3006 return -ENOMEM; 3007 3008 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 3009 struct ethtool_coalesce coalesce; 3010 3011 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); 3012 if (ret != 0) 3013 goto roll_back; 3014 3015 tmp++; 3016 3017 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { 3018 ret = -EFAULT; 3019 goto roll_back; 3020 } 3021 3022 if (!ethtool_set_coalesce_supported(dev, &coalesce)) { 3023 ret = -EOPNOTSUPP; 3024 goto roll_back; 3025 } 3026 3027 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); 3028 if (ret != 0) 3029 goto roll_back; 3030 3031 useraddr += sizeof(coalesce); 3032 } 3033 3034 roll_back: 3035 if (ret != 0) { 3036 tmp = backup; 3037 for_each_set_bit(i, queue_mask, bit) { 3038 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); 3039 tmp++; 3040 } 3041 } 3042 kfree(backup); 3043 3044 return ret; 3045 } 3046 3047 static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, 3048 void __user *useraddr, u32 sub_cmd) 3049 { 3050 struct ethtool_per_queue_op per_queue_opt; 3051 3052 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) 3053 return -EFAULT; 3054 3055 if (per_queue_opt.sub_command != sub_cmd) 3056 return -EINVAL; 3057 3058 switch (per_queue_opt.sub_command) { 3059 case ETHTOOL_GCOALESCE: 3060 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); 3061 case ETHTOOL_SCOALESCE: 3062 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); 3063 default: 3064 return -EOPNOTSUPP; 3065 } 3066 } 3067 3068 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) 3069 { 3070 switch (tuna->id) { 3071 case ETHTOOL_PHY_DOWNSHIFT: 3072 case ETHTOOL_PHY_FAST_LINK_DOWN: 3073 if (tuna->len != sizeof(u8) || 3074 tuna->type_id != ETHTOOL_TUNABLE_U8) 3075 return -EINVAL; 3076 break; 3077 case ETHTOOL_PHY_EDPD: 3078 if (tuna->len != sizeof(u16) || 3079 tuna->type_id != ETHTOOL_TUNABLE_U16) 3080 return -EINVAL; 3081 break; 3082 default: 3083 return -EINVAL; 3084 } 3085 3086 return 0; 3087 } 3088 3089 static int get_phy_tunable(struct net_device *dev, void __user *useraddr) 3090 { 3091 struct phy_device *phydev = dev->phydev; 3092 struct ethtool_tunable tuna; 3093 bool phy_drv_tunable; 3094 void *data; 3095 int ret; 3096 3097 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 3098 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) 3099 return -EOPNOTSUPP; 3100 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 3101 return -EFAULT; 3102 ret = ethtool_phy_tunable_valid(&tuna); 3103 if (ret) 3104 return ret; 3105 data = kzalloc(tuna.len, GFP_USER); 3106 if (!data) 3107 return -ENOMEM; 3108 if (phy_drv_tunable) { 3109 mutex_lock(&phydev->lock); 3110 ret = phydev->drv->get_tunable(phydev, &tuna, data); 3111 mutex_unlock(&phydev->lock); 3112 } else { 3113 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); 3114 } 3115 if (ret) 3116 goto out; 3117 useraddr += sizeof(tuna); 3118 ret = -EFAULT; 3119 if (copy_to_user(useraddr, data, tuna.len)) 3120 goto out; 3121 ret = 0; 3122 3123 out: 3124 kfree(data); 3125 return ret; 3126 } 3127 3128 static int set_phy_tunable(struct net_device *dev, void __user *useraddr) 3129 { 3130 struct phy_device *phydev = dev->phydev; 3131 struct ethtool_tunable tuna; 3132 bool phy_drv_tunable; 3133 void *data; 3134 int ret; 3135 3136 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 3137 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) 3138 return -EOPNOTSUPP; 3139 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 3140 return -EFAULT; 3141 ret = ethtool_phy_tunable_valid(&tuna); 3142 if (ret) 3143 return ret; 3144 useraddr += sizeof(tuna); 3145 data = memdup_user(useraddr, tuna.len); 3146 if (IS_ERR(data)) 3147 return PTR_ERR(data); 3148 if (phy_drv_tunable) { 3149 mutex_lock(&phydev->lock); 3150 ret = phydev->drv->set_tunable(phydev, &tuna, data); 3151 mutex_unlock(&phydev->lock); 3152 } else { 3153 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); 3154 } 3155 3156 kfree(data); 3157 return ret; 3158 } 3159 3160 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) 3161 { 3162 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; 3163 int rc; 3164 3165 if (!dev->ethtool_ops->get_fecparam) 3166 return -EOPNOTSUPP; 3167 3168 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); 3169 if (rc) 3170 return rc; 3171 3172 if (WARN_ON_ONCE(fecparam.reserved)) 3173 fecparam.reserved = 0; 3174 3175 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) 3176 return -EFAULT; 3177 return 0; 3178 } 3179 3180 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) 3181 { 3182 struct ethtool_fecparam fecparam; 3183 3184 if (!dev->ethtool_ops->set_fecparam) 3185 return -EOPNOTSUPP; 3186 3187 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) 3188 return -EFAULT; 3189 3190 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) 3191 return -EINVAL; 3192 3193 fecparam.active_fec = 0; 3194 fecparam.reserved = 0; 3195 3196 return dev->ethtool_ops->set_fecparam(dev, &fecparam); 3197 } 3198 3199 /* The main entry point in this file. Called from net/core/dev_ioctl.c */ 3200 3201 static int 3202 __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, 3203 u32 ethcmd, struct ethtool_devlink_compat *devlink_state) 3204 { 3205 struct net_device *dev; 3206 u32 sub_cmd; 3207 int rc; 3208 netdev_features_t old_features; 3209 3210 dev = __dev_get_by_name(net, ifr->ifr_name); 3211 if (!dev) 3212 return -ENODEV; 3213 3214 if (ethcmd == ETHTOOL_PERQUEUE) { 3215 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) 3216 return -EFAULT; 3217 } else { 3218 sub_cmd = ethcmd; 3219 } 3220 /* Allow some commands to be done by anyone */ 3221 switch (sub_cmd) { 3222 case ETHTOOL_GSET: 3223 case ETHTOOL_GDRVINFO: 3224 case ETHTOOL_GMSGLVL: 3225 case ETHTOOL_GLINK: 3226 case ETHTOOL_GCOALESCE: 3227 case ETHTOOL_GRINGPARAM: 3228 case ETHTOOL_GPAUSEPARAM: 3229 case ETHTOOL_GRXCSUM: 3230 case ETHTOOL_GTXCSUM: 3231 case ETHTOOL_GSG: 3232 case ETHTOOL_GSSET_INFO: 3233 case ETHTOOL_GSTRINGS: 3234 case ETHTOOL_GSTATS: 3235 case ETHTOOL_GPHYSTATS: 3236 case ETHTOOL_GTSO: 3237 case ETHTOOL_GPERMADDR: 3238 case ETHTOOL_GUFO: 3239 case ETHTOOL_GGSO: 3240 case ETHTOOL_GGRO: 3241 case ETHTOOL_GFLAGS: 3242 case ETHTOOL_GPFLAGS: 3243 case ETHTOOL_GRXFH: 3244 case ETHTOOL_GRXRINGS: 3245 case ETHTOOL_GRXCLSRLCNT: 3246 case ETHTOOL_GRXCLSRULE: 3247 case ETHTOOL_GRXCLSRLALL: 3248 case ETHTOOL_GRXFHINDIR: 3249 case ETHTOOL_GRSSH: 3250 case ETHTOOL_GFEATURES: 3251 case ETHTOOL_GCHANNELS: 3252 case ETHTOOL_GET_TS_INFO: 3253 case ETHTOOL_GEEE: 3254 case ETHTOOL_GTUNABLE: 3255 case ETHTOOL_PHY_GTUNABLE: 3256 case ETHTOOL_GLINKSETTINGS: 3257 case ETHTOOL_GFECPARAM: 3258 break; 3259 default: 3260 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 3261 return -EPERM; 3262 } 3263 3264 netdev_lock_ops(dev); 3265 if (dev->dev.parent) 3266 pm_runtime_get_sync(dev->dev.parent); 3267 3268 if (!netif_device_present(dev)) { 3269 rc = -ENODEV; 3270 goto out; 3271 } 3272 3273 if (dev->ethtool_ops->begin) { 3274 rc = dev->ethtool_ops->begin(dev); 3275 if (rc < 0) 3276 goto out; 3277 } 3278 old_features = dev->features; 3279 3280 switch (ethcmd) { 3281 case ETHTOOL_GSET: 3282 rc = ethtool_get_settings(dev, useraddr); 3283 break; 3284 case ETHTOOL_SSET: 3285 rc = ethtool_set_settings(dev, useraddr); 3286 break; 3287 case ETHTOOL_GDRVINFO: 3288 rc = ethtool_get_drvinfo(dev, devlink_state); 3289 break; 3290 case ETHTOOL_GREGS: 3291 rc = ethtool_get_regs(dev, useraddr); 3292 break; 3293 case ETHTOOL_GWOL: 3294 rc = ethtool_get_wol(dev, useraddr); 3295 break; 3296 case ETHTOOL_SWOL: 3297 rc = ethtool_set_wol(dev, useraddr); 3298 break; 3299 case ETHTOOL_GMSGLVL: 3300 rc = ethtool_get_value(dev, useraddr, ethcmd, 3301 dev->ethtool_ops->get_msglevel); 3302 break; 3303 case ETHTOOL_SMSGLVL: 3304 rc = ethtool_set_value_void(dev, useraddr, 3305 dev->ethtool_ops->set_msglevel); 3306 if (!rc) 3307 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF); 3308 break; 3309 case ETHTOOL_GEEE: 3310 rc = ethtool_get_eee(dev, useraddr); 3311 break; 3312 case ETHTOOL_SEEE: 3313 rc = ethtool_set_eee(dev, useraddr); 3314 break; 3315 case ETHTOOL_NWAY_RST: 3316 rc = ethtool_nway_reset(dev); 3317 break; 3318 case ETHTOOL_GLINK: 3319 rc = ethtool_get_link(dev, useraddr); 3320 break; 3321 case ETHTOOL_GEEPROM: 3322 rc = ethtool_get_eeprom(dev, useraddr); 3323 break; 3324 case ETHTOOL_SEEPROM: 3325 rc = ethtool_set_eeprom(dev, useraddr); 3326 break; 3327 case ETHTOOL_GCOALESCE: 3328 rc = ethtool_get_coalesce(dev, useraddr); 3329 break; 3330 case ETHTOOL_SCOALESCE: 3331 rc = ethtool_set_coalesce(dev, useraddr); 3332 break; 3333 case ETHTOOL_GRINGPARAM: 3334 rc = ethtool_get_ringparam(dev, useraddr); 3335 break; 3336 case ETHTOOL_SRINGPARAM: 3337 rc = ethtool_set_ringparam(dev, useraddr); 3338 break; 3339 case ETHTOOL_GPAUSEPARAM: 3340 rc = ethtool_get_pauseparam(dev, useraddr); 3341 break; 3342 case ETHTOOL_SPAUSEPARAM: 3343 rc = ethtool_set_pauseparam(dev, useraddr); 3344 break; 3345 case ETHTOOL_TEST: 3346 rc = ethtool_self_test(dev, useraddr); 3347 break; 3348 case ETHTOOL_GSTRINGS: 3349 rc = ethtool_get_strings(dev, useraddr); 3350 break; 3351 case ETHTOOL_PHYS_ID: 3352 rc = ethtool_phys_id(dev, useraddr); 3353 break; 3354 case ETHTOOL_GSTATS: 3355 rc = ethtool_get_stats(dev, useraddr); 3356 break; 3357 case ETHTOOL_GPERMADDR: 3358 rc = ethtool_get_perm_addr(dev, useraddr); 3359 break; 3360 case ETHTOOL_GFLAGS: 3361 rc = ethtool_get_value(dev, useraddr, ethcmd, 3362 __ethtool_get_flags); 3363 break; 3364 case ETHTOOL_SFLAGS: 3365 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); 3366 break; 3367 case ETHTOOL_GPFLAGS: 3368 rc = ethtool_get_value(dev, useraddr, ethcmd, 3369 dev->ethtool_ops->get_priv_flags); 3370 if (!rc) 3371 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF); 3372 break; 3373 case ETHTOOL_SPFLAGS: 3374 rc = ethtool_set_value(dev, useraddr, 3375 dev->ethtool_ops->set_priv_flags); 3376 break; 3377 case ETHTOOL_GRXFH: 3378 rc = ethtool_get_rxfh_fields(dev, ethcmd, useraddr); 3379 break; 3380 case ETHTOOL_SRXFH: 3381 rc = ethtool_set_rxfh_fields(dev, ethcmd, useraddr); 3382 break; 3383 case ETHTOOL_GRXRINGS: 3384 case ETHTOOL_GRXCLSRLCNT: 3385 case ETHTOOL_GRXCLSRULE: 3386 case ETHTOOL_GRXCLSRLALL: 3387 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); 3388 break; 3389 case ETHTOOL_SRXCLSRLDEL: 3390 case ETHTOOL_SRXCLSRLINS: 3391 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); 3392 break; 3393 case ETHTOOL_FLASHDEV: 3394 rc = ethtool_flash_device(dev, devlink_state); 3395 break; 3396 case ETHTOOL_RESET: 3397 rc = ethtool_reset(dev, useraddr); 3398 break; 3399 case ETHTOOL_GSSET_INFO: 3400 rc = ethtool_get_sset_info(dev, useraddr); 3401 break; 3402 case ETHTOOL_GRXFHINDIR: 3403 rc = ethtool_get_rxfh_indir(dev, useraddr); 3404 break; 3405 case ETHTOOL_SRXFHINDIR: 3406 rc = ethtool_set_rxfh_indir(dev, useraddr); 3407 break; 3408 case ETHTOOL_GRSSH: 3409 rc = ethtool_get_rxfh(dev, useraddr); 3410 break; 3411 case ETHTOOL_SRSSH: 3412 rc = ethtool_set_rxfh(dev, useraddr); 3413 break; 3414 case ETHTOOL_GFEATURES: 3415 rc = ethtool_get_features(dev, useraddr); 3416 break; 3417 case ETHTOOL_SFEATURES: 3418 rc = ethtool_set_features(dev, useraddr); 3419 break; 3420 case ETHTOOL_GTXCSUM: 3421 case ETHTOOL_GRXCSUM: 3422 case ETHTOOL_GSG: 3423 case ETHTOOL_GTSO: 3424 case ETHTOOL_GGSO: 3425 case ETHTOOL_GGRO: 3426 rc = ethtool_get_one_feature(dev, useraddr, ethcmd); 3427 break; 3428 case ETHTOOL_STXCSUM: 3429 case ETHTOOL_SRXCSUM: 3430 case ETHTOOL_SSG: 3431 case ETHTOOL_STSO: 3432 case ETHTOOL_SGSO: 3433 case ETHTOOL_SGRO: 3434 rc = ethtool_set_one_feature(dev, useraddr, ethcmd); 3435 break; 3436 case ETHTOOL_GCHANNELS: 3437 rc = ethtool_get_channels(dev, useraddr); 3438 break; 3439 case ETHTOOL_SCHANNELS: 3440 rc = ethtool_set_channels(dev, useraddr); 3441 break; 3442 case ETHTOOL_SET_DUMP: 3443 rc = ethtool_set_dump(dev, useraddr); 3444 break; 3445 case ETHTOOL_GET_DUMP_FLAG: 3446 rc = ethtool_get_dump_flag(dev, useraddr); 3447 break; 3448 case ETHTOOL_GET_DUMP_DATA: 3449 rc = ethtool_get_dump_data(dev, useraddr); 3450 break; 3451 case ETHTOOL_GET_TS_INFO: 3452 rc = ethtool_get_ts_info(dev, useraddr); 3453 break; 3454 case ETHTOOL_GMODULEINFO: 3455 rc = ethtool_get_module_info(dev, useraddr); 3456 break; 3457 case ETHTOOL_GMODULEEEPROM: 3458 rc = ethtool_get_module_eeprom(dev, useraddr); 3459 break; 3460 case ETHTOOL_GTUNABLE: 3461 rc = ethtool_get_tunable(dev, useraddr); 3462 break; 3463 case ETHTOOL_STUNABLE: 3464 rc = ethtool_set_tunable(dev, useraddr); 3465 break; 3466 case ETHTOOL_GPHYSTATS: 3467 rc = ethtool_get_phy_stats(dev, useraddr); 3468 break; 3469 case ETHTOOL_PERQUEUE: 3470 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); 3471 break; 3472 case ETHTOOL_GLINKSETTINGS: 3473 rc = ethtool_get_link_ksettings(dev, useraddr); 3474 break; 3475 case ETHTOOL_SLINKSETTINGS: 3476 rc = ethtool_set_link_ksettings(dev, useraddr); 3477 break; 3478 case ETHTOOL_PHY_GTUNABLE: 3479 rc = get_phy_tunable(dev, useraddr); 3480 break; 3481 case ETHTOOL_PHY_STUNABLE: 3482 rc = set_phy_tunable(dev, useraddr); 3483 break; 3484 case ETHTOOL_GFECPARAM: 3485 rc = ethtool_get_fecparam(dev, useraddr); 3486 break; 3487 case ETHTOOL_SFECPARAM: 3488 rc = ethtool_set_fecparam(dev, useraddr); 3489 break; 3490 default: 3491 rc = -EOPNOTSUPP; 3492 } 3493 3494 if (dev->ethtool_ops->complete) 3495 dev->ethtool_ops->complete(dev); 3496 3497 if (old_features != dev->features) 3498 netdev_features_change(dev); 3499 out: 3500 if (dev->dev.parent) 3501 pm_runtime_put(dev->dev.parent); 3502 netdev_unlock_ops(dev); 3503 3504 return rc; 3505 } 3506 3507 int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) 3508 { 3509 struct ethtool_devlink_compat *state; 3510 u32 ethcmd; 3511 int rc; 3512 3513 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) 3514 return -EFAULT; 3515 3516 state = kzalloc(sizeof(*state), GFP_KERNEL); 3517 if (!state) 3518 return -ENOMEM; 3519 3520 switch (ethcmd) { 3521 case ETHTOOL_FLASHDEV: 3522 if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { 3523 rc = -EFAULT; 3524 goto exit_free; 3525 } 3526 state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; 3527 break; 3528 } 3529 3530 rtnl_lock(); 3531 rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); 3532 rtnl_unlock(); 3533 if (rc) 3534 goto exit_free; 3535 3536 switch (ethcmd) { 3537 case ETHTOOL_FLASHDEV: 3538 if (state->devlink) 3539 rc = devlink_compat_flash_update(state->devlink, 3540 state->efl.data); 3541 break; 3542 case ETHTOOL_GDRVINFO: 3543 if (state->devlink) 3544 devlink_compat_running_version(state->devlink, 3545 state->info.fw_version, 3546 sizeof(state->info.fw_version)); 3547 if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { 3548 rc = -EFAULT; 3549 goto exit_free; 3550 } 3551 break; 3552 } 3553 3554 exit_free: 3555 if (state->devlink) 3556 devlink_put(state->devlink); 3557 kfree(state); 3558 return rc; 3559 } 3560 3561 struct ethtool_rx_flow_key { 3562 struct flow_dissector_key_basic basic; 3563 union { 3564 struct flow_dissector_key_ipv4_addrs ipv4; 3565 struct flow_dissector_key_ipv6_addrs ipv6; 3566 }; 3567 struct flow_dissector_key_ports tp; 3568 struct flow_dissector_key_ip ip; 3569 struct flow_dissector_key_vlan vlan; 3570 struct flow_dissector_key_eth_addrs eth_addrs; 3571 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ 3572 3573 struct ethtool_rx_flow_match { 3574 struct flow_dissector dissector; 3575 struct ethtool_rx_flow_key key; 3576 struct ethtool_rx_flow_key mask; 3577 }; 3578 3579 struct ethtool_rx_flow_rule * 3580 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) 3581 { 3582 const struct ethtool_rx_flow_spec *fs = input->fs; 3583 struct ethtool_rx_flow_match *match; 3584 struct ethtool_rx_flow_rule *flow; 3585 struct flow_action_entry *act; 3586 3587 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + 3588 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); 3589 if (!flow) 3590 return ERR_PTR(-ENOMEM); 3591 3592 /* ethtool_rx supports only one single action per rule. */ 3593 flow->rule = flow_rule_alloc(1); 3594 if (!flow->rule) { 3595 kfree(flow); 3596 return ERR_PTR(-ENOMEM); 3597 } 3598 3599 match = (struct ethtool_rx_flow_match *)flow->priv; 3600 flow->rule->match.dissector = &match->dissector; 3601 flow->rule->match.mask = &match->mask; 3602 flow->rule->match.key = &match->key; 3603 3604 match->mask.basic.n_proto = htons(0xffff); 3605 3606 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3607 case ETHER_FLOW: { 3608 const struct ethhdr *ether_spec, *ether_m_spec; 3609 3610 ether_spec = &fs->h_u.ether_spec; 3611 ether_m_spec = &fs->m_u.ether_spec; 3612 3613 if (!is_zero_ether_addr(ether_m_spec->h_source)) { 3614 ether_addr_copy(match->key.eth_addrs.src, 3615 ether_spec->h_source); 3616 ether_addr_copy(match->mask.eth_addrs.src, 3617 ether_m_spec->h_source); 3618 } 3619 if (!is_zero_ether_addr(ether_m_spec->h_dest)) { 3620 ether_addr_copy(match->key.eth_addrs.dst, 3621 ether_spec->h_dest); 3622 ether_addr_copy(match->mask.eth_addrs.dst, 3623 ether_m_spec->h_dest); 3624 } 3625 if (ether_m_spec->h_proto) { 3626 match->key.basic.n_proto = ether_spec->h_proto; 3627 match->mask.basic.n_proto = ether_m_spec->h_proto; 3628 } 3629 } 3630 break; 3631 case TCP_V4_FLOW: 3632 case UDP_V4_FLOW: { 3633 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; 3634 3635 match->key.basic.n_proto = htons(ETH_P_IP); 3636 3637 v4_spec = &fs->h_u.tcp_ip4_spec; 3638 v4_m_spec = &fs->m_u.tcp_ip4_spec; 3639 3640 if (v4_m_spec->ip4src) { 3641 match->key.ipv4.src = v4_spec->ip4src; 3642 match->mask.ipv4.src = v4_m_spec->ip4src; 3643 } 3644 if (v4_m_spec->ip4dst) { 3645 match->key.ipv4.dst = v4_spec->ip4dst; 3646 match->mask.ipv4.dst = v4_m_spec->ip4dst; 3647 } 3648 if (v4_m_spec->ip4src || 3649 v4_m_spec->ip4dst) { 3650 match->dissector.used_keys |= 3651 BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS); 3652 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = 3653 offsetof(struct ethtool_rx_flow_key, ipv4); 3654 } 3655 if (v4_m_spec->psrc) { 3656 match->key.tp.src = v4_spec->psrc; 3657 match->mask.tp.src = v4_m_spec->psrc; 3658 } 3659 if (v4_m_spec->pdst) { 3660 match->key.tp.dst = v4_spec->pdst; 3661 match->mask.tp.dst = v4_m_spec->pdst; 3662 } 3663 if (v4_m_spec->psrc || 3664 v4_m_spec->pdst) { 3665 match->dissector.used_keys |= 3666 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3667 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3668 offsetof(struct ethtool_rx_flow_key, tp); 3669 } 3670 if (v4_m_spec->tos) { 3671 match->key.ip.tos = v4_spec->tos; 3672 match->mask.ip.tos = v4_m_spec->tos; 3673 match->dissector.used_keys |= 3674 BIT(FLOW_DISSECTOR_KEY_IP); 3675 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3676 offsetof(struct ethtool_rx_flow_key, ip); 3677 } 3678 } 3679 break; 3680 case TCP_V6_FLOW: 3681 case UDP_V6_FLOW: { 3682 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; 3683 3684 match->key.basic.n_proto = htons(ETH_P_IPV6); 3685 3686 v6_spec = &fs->h_u.tcp_ip6_spec; 3687 v6_m_spec = &fs->m_u.tcp_ip6_spec; 3688 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) { 3689 memcpy(&match->key.ipv6.src, v6_spec->ip6src, 3690 sizeof(match->key.ipv6.src)); 3691 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, 3692 sizeof(match->mask.ipv6.src)); 3693 } 3694 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3695 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, 3696 sizeof(match->key.ipv6.dst)); 3697 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, 3698 sizeof(match->mask.ipv6.dst)); 3699 } 3700 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) || 3701 !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3702 match->dissector.used_keys |= 3703 BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS); 3704 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = 3705 offsetof(struct ethtool_rx_flow_key, ipv6); 3706 } 3707 if (v6_m_spec->psrc) { 3708 match->key.tp.src = v6_spec->psrc; 3709 match->mask.tp.src = v6_m_spec->psrc; 3710 } 3711 if (v6_m_spec->pdst) { 3712 match->key.tp.dst = v6_spec->pdst; 3713 match->mask.tp.dst = v6_m_spec->pdst; 3714 } 3715 if (v6_m_spec->psrc || 3716 v6_m_spec->pdst) { 3717 match->dissector.used_keys |= 3718 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3719 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3720 offsetof(struct ethtool_rx_flow_key, tp); 3721 } 3722 if (v6_m_spec->tclass) { 3723 match->key.ip.tos = v6_spec->tclass; 3724 match->mask.ip.tos = v6_m_spec->tclass; 3725 match->dissector.used_keys |= 3726 BIT_ULL(FLOW_DISSECTOR_KEY_IP); 3727 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3728 offsetof(struct ethtool_rx_flow_key, ip); 3729 } 3730 } 3731 break; 3732 default: 3733 ethtool_rx_flow_rule_destroy(flow); 3734 return ERR_PTR(-EINVAL); 3735 } 3736 3737 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3738 case TCP_V4_FLOW: 3739 case TCP_V6_FLOW: 3740 match->key.basic.ip_proto = IPPROTO_TCP; 3741 match->mask.basic.ip_proto = 0xff; 3742 break; 3743 case UDP_V4_FLOW: 3744 case UDP_V6_FLOW: 3745 match->key.basic.ip_proto = IPPROTO_UDP; 3746 match->mask.basic.ip_proto = 0xff; 3747 break; 3748 } 3749 3750 match->dissector.used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_BASIC); 3751 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = 3752 offsetof(struct ethtool_rx_flow_key, basic); 3753 3754 if (fs->flow_type & FLOW_EXT) { 3755 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3756 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3757 3758 if (ext_m_spec->vlan_etype) { 3759 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; 3760 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; 3761 } 3762 3763 if (ext_m_spec->vlan_tci) { 3764 match->key.vlan.vlan_id = 3765 ntohs(ext_h_spec->vlan_tci) & 0x0fff; 3766 match->mask.vlan.vlan_id = 3767 ntohs(ext_m_spec->vlan_tci) & 0x0fff; 3768 3769 match->key.vlan.vlan_dei = 3770 !!(ext_h_spec->vlan_tci & htons(0x1000)); 3771 match->mask.vlan.vlan_dei = 3772 !!(ext_m_spec->vlan_tci & htons(0x1000)); 3773 3774 match->key.vlan.vlan_priority = 3775 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; 3776 match->mask.vlan.vlan_priority = 3777 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; 3778 } 3779 3780 if (ext_m_spec->vlan_etype || 3781 ext_m_spec->vlan_tci) { 3782 match->dissector.used_keys |= 3783 BIT_ULL(FLOW_DISSECTOR_KEY_VLAN); 3784 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = 3785 offsetof(struct ethtool_rx_flow_key, vlan); 3786 } 3787 } 3788 if (fs->flow_type & FLOW_MAC_EXT) { 3789 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3790 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3791 3792 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, 3793 ETH_ALEN); 3794 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, 3795 ETH_ALEN); 3796 3797 match->dissector.used_keys |= 3798 BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS); 3799 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = 3800 offsetof(struct ethtool_rx_flow_key, eth_addrs); 3801 } 3802 3803 act = &flow->rule->action.entries[0]; 3804 switch (fs->ring_cookie) { 3805 case RX_CLS_FLOW_DISC: 3806 act->id = FLOW_ACTION_DROP; 3807 break; 3808 case RX_CLS_FLOW_WAKE: 3809 act->id = FLOW_ACTION_WAKE; 3810 break; 3811 default: 3812 act->id = FLOW_ACTION_QUEUE; 3813 if (fs->flow_type & FLOW_RSS) 3814 act->queue.ctx = input->rss_ctx; 3815 3816 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); 3817 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); 3818 break; 3819 } 3820 3821 return flow; 3822 } 3823 EXPORT_SYMBOL(ethtool_rx_flow_rule_create); 3824 3825 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) 3826 { 3827 kfree(flow->rule); 3828 kfree(flow); 3829 } 3830 EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); 3831