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 if (!input_xfrm || input_xfrm == RXH_XFRM_NO_CHANGE) 1045 return 0; 1046 1047 for (i = 0; i < __FLOW_TYPE_COUNT; i++) { 1048 struct ethtool_rxfh_fields fields = { 1049 .flow_type = i, 1050 }; 1051 1052 if (!flow_type_hashable(i)) 1053 continue; 1054 1055 if (ops->get_rxfh_fields(dev, &fields)) 1056 continue; 1057 1058 err = ethtool_check_xfrm_rxfh(input_xfrm, fields.data); 1059 if (err) 1060 return err; 1061 } 1062 1063 return 0; 1064 } 1065 1066 static noinline_for_stack int 1067 ethtool_set_rxfh_fields(struct net_device *dev, u32 cmd, void __user *useraddr) 1068 { 1069 const struct ethtool_ops *ops = dev->ethtool_ops; 1070 struct ethtool_rxfh_fields fields = {}; 1071 struct ethtool_rxnfc info; 1072 size_t info_size = sizeof(info); 1073 int rc; 1074 1075 if (!ops->set_rxfh_fields) 1076 return -EOPNOTSUPP; 1077 1078 rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1079 if (rc) 1080 return rc; 1081 1082 if (info.flow_type & FLOW_RSS && info.rss_context && 1083 !ops->rxfh_per_ctx_fields) 1084 return -EINVAL; 1085 1086 mutex_lock(&dev->ethtool->rss_lock); 1087 if (ops->get_rxfh) { 1088 struct ethtool_rxfh_param rxfh = {}; 1089 1090 rc = ops->get_rxfh(dev, &rxfh); 1091 if (rc) 1092 goto exit_unlock; 1093 1094 rc = ethtool_check_xfrm_rxfh(rxfh.input_xfrm, info.data); 1095 if (rc) 1096 goto exit_unlock; 1097 } 1098 1099 fields.data = info.data; 1100 fields.flow_type = info.flow_type & ~FLOW_RSS; 1101 if (info.flow_type & FLOW_RSS) 1102 fields.rss_context = info.rss_context; 1103 1104 rc = ops->set_rxfh_fields(dev, &fields, NULL); 1105 exit_unlock: 1106 mutex_unlock(&dev->ethtool->rss_lock); 1107 if (rc) 1108 return rc; 1109 1110 ethtool_rss_notify(dev, fields.rss_context); 1111 return 0; 1112 } 1113 1114 static noinline_for_stack int 1115 ethtool_get_rxfh_fields(struct net_device *dev, u32 cmd, void __user *useraddr) 1116 { 1117 struct ethtool_rxnfc info; 1118 size_t info_size = sizeof(info); 1119 const struct ethtool_ops *ops = dev->ethtool_ops; 1120 struct ethtool_rxfh_fields fields = {}; 1121 int ret; 1122 1123 if (!ops->get_rxfh_fields) 1124 return -EOPNOTSUPP; 1125 1126 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1127 if (ret) 1128 return ret; 1129 1130 if (info.flow_type & FLOW_RSS && info.rss_context && 1131 !ops->rxfh_per_ctx_fields) 1132 return -EINVAL; 1133 1134 fields.flow_type = info.flow_type & ~FLOW_RSS; 1135 if (info.flow_type & FLOW_RSS) 1136 fields.rss_context = info.rss_context; 1137 1138 mutex_lock(&dev->ethtool->rss_lock); 1139 ret = ops->get_rxfh_fields(dev, &fields); 1140 mutex_unlock(&dev->ethtool->rss_lock); 1141 if (ret < 0) 1142 return ret; 1143 1144 info.data = fields.data; 1145 1146 return ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL); 1147 } 1148 1149 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, 1150 u32 cmd, void __user *useraddr) 1151 { 1152 const struct ethtool_ops *ops = dev->ethtool_ops; 1153 struct ethtool_rxnfc info; 1154 size_t info_size = sizeof(info); 1155 int rc; 1156 1157 if (!ops->set_rxnfc) 1158 return -EOPNOTSUPP; 1159 1160 rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1161 if (rc) 1162 return rc; 1163 1164 if (cmd == ETHTOOL_SRXCLSRLINS && info.fs.flow_type & FLOW_RSS) { 1165 /* Nonzero ring with RSS only makes sense 1166 * if NIC adds them together 1167 */ 1168 if (!ops->cap_rss_rxnfc_adds && 1169 ethtool_get_flow_spec_ring(info.fs.ring_cookie)) 1170 return -EINVAL; 1171 1172 if (info.rss_context && 1173 !xa_load(&dev->ethtool->rss_ctx, info.rss_context)) 1174 return -EINVAL; 1175 } 1176 1177 rc = ops->set_rxnfc(dev, &info); 1178 if (rc) 1179 return rc; 1180 1181 if (cmd == ETHTOOL_SRXCLSRLINS && 1182 ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL)) 1183 return -EFAULT; 1184 1185 return 0; 1186 } 1187 1188 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, 1189 u32 cmd, void __user *useraddr) 1190 { 1191 struct ethtool_rxnfc info; 1192 size_t info_size = sizeof(info); 1193 const struct ethtool_ops *ops = dev->ethtool_ops; 1194 int ret; 1195 void *rule_buf = NULL; 1196 1197 if (!ops->get_rxnfc) 1198 return -EOPNOTSUPP; 1199 1200 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1201 if (ret) 1202 return ret; 1203 1204 if (info.cmd == ETHTOOL_GRXCLSRLALL) { 1205 if (info.rule_cnt > 0) { 1206 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) 1207 rule_buf = kcalloc(info.rule_cnt, sizeof(u32), 1208 GFP_USER); 1209 if (!rule_buf) 1210 return -ENOMEM; 1211 } 1212 } 1213 1214 ret = ops->get_rxnfc(dev, &info, rule_buf); 1215 if (ret < 0) 1216 goto err_out; 1217 1218 ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf); 1219 err_out: 1220 kfree(rule_buf); 1221 1222 return ret; 1223 } 1224 1225 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, 1226 struct ethtool_rxnfc *rx_rings, 1227 u32 size) 1228 { 1229 int i; 1230 1231 if (copy_from_user(indir, useraddr, array_size(size, sizeof(indir[0])))) 1232 return -EFAULT; 1233 1234 /* Validate ring indices */ 1235 for (i = 0; i < size; i++) 1236 if (indir[i] >= rx_rings->data) 1237 return -EINVAL; 1238 1239 return 0; 1240 } 1241 1242 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; 1243 1244 void netdev_rss_key_fill(void *buffer, size_t len) 1245 { 1246 BUG_ON(len > sizeof(netdev_rss_key)); 1247 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); 1248 memcpy(buffer, netdev_rss_key, len); 1249 } 1250 EXPORT_SYMBOL(netdev_rss_key_fill); 1251 1252 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, 1253 void __user *useraddr) 1254 { 1255 struct ethtool_rxfh_param rxfh = {}; 1256 u32 user_size; 1257 int ret; 1258 1259 if (!dev->ethtool_ops->get_rxfh_indir_size || 1260 !dev->ethtool_ops->get_rxfh) 1261 return -EOPNOTSUPP; 1262 rxfh.indir_size = dev->ethtool_ops->get_rxfh_indir_size(dev); 1263 if (rxfh.indir_size == 0) 1264 return -EOPNOTSUPP; 1265 1266 if (copy_from_user(&user_size, 1267 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1268 sizeof(user_size))) 1269 return -EFAULT; 1270 1271 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), 1272 &rxfh.indir_size, sizeof(rxfh.indir_size))) 1273 return -EFAULT; 1274 1275 /* If the user buffer size is 0, this is just a query for the 1276 * device table size. Otherwise, if it's smaller than the 1277 * device table size it's an error. 1278 */ 1279 if (user_size < rxfh.indir_size) 1280 return user_size == 0 ? 0 : -EINVAL; 1281 1282 rxfh.indir = kcalloc(rxfh.indir_size, sizeof(rxfh.indir[0]), GFP_USER); 1283 if (!rxfh.indir) 1284 return -ENOMEM; 1285 1286 mutex_lock(&dev->ethtool->rss_lock); 1287 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh); 1288 mutex_unlock(&dev->ethtool->rss_lock); 1289 if (ret) 1290 goto out; 1291 if (copy_to_user(useraddr + 1292 offsetof(struct ethtool_rxfh_indir, ring_index[0]), 1293 rxfh.indir, rxfh.indir_size * sizeof(*rxfh.indir))) 1294 ret = -EFAULT; 1295 1296 out: 1297 kfree(rxfh.indir); 1298 return ret; 1299 } 1300 1301 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, 1302 void __user *useraddr) 1303 { 1304 const struct ethtool_ops *ops = dev->ethtool_ops; 1305 struct ethtool_rxfh_param rxfh_dev = {}; 1306 struct netlink_ext_ack *extack = NULL; 1307 struct ethtool_rxnfc rx_rings; 1308 u32 user_size, i; 1309 int ret; 1310 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); 1311 1312 if (!ops->get_rxfh_indir_size || !ops->set_rxfh || 1313 !ops->get_rxnfc) 1314 return -EOPNOTSUPP; 1315 1316 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1317 if (rxfh_dev.indir_size == 0) 1318 return -EOPNOTSUPP; 1319 1320 if (copy_from_user(&user_size, 1321 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1322 sizeof(user_size))) 1323 return -EFAULT; 1324 1325 if (user_size != 0 && user_size != rxfh_dev.indir_size) 1326 return -EINVAL; 1327 1328 rxfh_dev.indir = kcalloc(rxfh_dev.indir_size, 1329 sizeof(rxfh_dev.indir[0]), GFP_USER); 1330 if (!rxfh_dev.indir) 1331 return -ENOMEM; 1332 1333 rx_rings.cmd = ETHTOOL_GRXRINGS; 1334 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1335 if (ret) 1336 goto out; 1337 1338 if (user_size == 0) { 1339 u32 *indir = rxfh_dev.indir; 1340 1341 for (i = 0; i < rxfh_dev.indir_size; i++) 1342 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1343 } else { 1344 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1345 useraddr + ringidx_offset, 1346 &rx_rings, 1347 rxfh_dev.indir_size); 1348 if (ret) 1349 goto out; 1350 } 1351 1352 rxfh_dev.hfunc = ETH_RSS_HASH_NO_CHANGE; 1353 1354 mutex_lock(&dev->ethtool->rss_lock); 1355 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1356 if (ret) 1357 goto out_unlock; 1358 1359 /* indicate whether rxfh was set to default */ 1360 if (user_size == 0) 1361 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1362 else 1363 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1364 1365 out_unlock: 1366 mutex_unlock(&dev->ethtool->rss_lock); 1367 out: 1368 kfree(rxfh_dev.indir); 1369 return ret; 1370 } 1371 1372 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, 1373 void __user *useraddr) 1374 { 1375 const struct ethtool_ops *ops = dev->ethtool_ops; 1376 struct ethtool_rxfh_param rxfh_dev = {}; 1377 u32 user_indir_size, user_key_size; 1378 struct ethtool_rxfh_context *ctx; 1379 struct ethtool_rxfh rxfh; 1380 u32 indir_bytes; 1381 u8 *rss_config; 1382 u32 total_size; 1383 int ret; 1384 1385 if (!ops->get_rxfh) 1386 return -EOPNOTSUPP; 1387 1388 if (ops->get_rxfh_indir_size) 1389 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1390 if (ops->get_rxfh_key_size) 1391 rxfh_dev.key_size = ops->get_rxfh_key_size(dev); 1392 1393 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1394 return -EFAULT; 1395 user_indir_size = rxfh.indir_size; 1396 user_key_size = rxfh.key_size; 1397 1398 /* Check that reserved fields are 0 for now */ 1399 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1400 return -EINVAL; 1401 /* Most drivers don't handle rss_context, check it's 0 as well */ 1402 if (rxfh.rss_context && !ops->create_rxfh_context) 1403 return -EOPNOTSUPP; 1404 1405 rxfh.indir_size = rxfh_dev.indir_size; 1406 rxfh.key_size = rxfh_dev.key_size; 1407 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) 1408 return -EFAULT; 1409 1410 if ((user_indir_size && user_indir_size != rxfh_dev.indir_size) || 1411 (user_key_size && user_key_size != rxfh_dev.key_size)) 1412 return -EINVAL; 1413 1414 indir_bytes = user_indir_size * sizeof(rxfh_dev.indir[0]); 1415 total_size = indir_bytes + user_key_size; 1416 rss_config = kzalloc(total_size, GFP_USER); 1417 if (!rss_config) 1418 return -ENOMEM; 1419 1420 if (user_indir_size) 1421 rxfh_dev.indir = (u32 *)rss_config; 1422 1423 if (user_key_size) 1424 rxfh_dev.key = rss_config + indir_bytes; 1425 1426 mutex_lock(&dev->ethtool->rss_lock); 1427 if (rxfh.rss_context) { 1428 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1429 if (!ctx) { 1430 ret = -ENOENT; 1431 goto out; 1432 } 1433 if (rxfh_dev.indir) 1434 memcpy(rxfh_dev.indir, ethtool_rxfh_context_indir(ctx), 1435 indir_bytes); 1436 if (!ops->rxfh_per_ctx_key) { 1437 rxfh_dev.key_size = 0; 1438 } else { 1439 if (rxfh_dev.key) 1440 memcpy(rxfh_dev.key, 1441 ethtool_rxfh_context_key(ctx), 1442 user_key_size); 1443 rxfh_dev.hfunc = ctx->hfunc; 1444 } 1445 rxfh_dev.input_xfrm = ctx->input_xfrm; 1446 ret = 0; 1447 } else { 1448 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh_dev); 1449 if (ret) 1450 goto out; 1451 } 1452 1453 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), 1454 &rxfh_dev.hfunc, sizeof(rxfh.hfunc))) { 1455 ret = -EFAULT; 1456 } else if (copy_to_user(useraddr + 1457 offsetof(struct ethtool_rxfh, input_xfrm), 1458 &rxfh_dev.input_xfrm, 1459 sizeof(rxfh.input_xfrm))) { 1460 ret = -EFAULT; 1461 } else if (copy_to_user(useraddr + 1462 offsetof(struct ethtool_rxfh, key_size), 1463 &rxfh_dev.key_size, 1464 sizeof(rxfh.key_size))) { 1465 ret = -EFAULT; 1466 } else if (copy_to_user(useraddr + 1467 offsetof(struct ethtool_rxfh, rss_config[0]), 1468 rss_config, total_size)) { 1469 ret = -EFAULT; 1470 } 1471 out: 1472 mutex_unlock(&dev->ethtool->rss_lock); 1473 kfree(rss_config); 1474 1475 return ret; 1476 } 1477 1478 static struct ethtool_rxfh_context * 1479 ethtool_rxfh_ctx_alloc(const struct ethtool_ops *ops, 1480 u32 indir_size, u32 key_size) 1481 { 1482 size_t indir_bytes, flex_len, key_off, size; 1483 struct ethtool_rxfh_context *ctx; 1484 u32 priv_bytes, indir_max; 1485 u16 key_max; 1486 1487 key_max = max(key_size, ops->rxfh_key_space); 1488 indir_max = max(indir_size, ops->rxfh_indir_space); 1489 1490 priv_bytes = ALIGN(ops->rxfh_priv_size, sizeof(u32)); 1491 indir_bytes = array_size(indir_max, sizeof(u32)); 1492 1493 key_off = size_add(priv_bytes, indir_bytes); 1494 flex_len = size_add(key_off, key_max); 1495 size = struct_size_t(struct ethtool_rxfh_context, data, flex_len); 1496 1497 ctx = kzalloc(size, GFP_KERNEL_ACCOUNT); 1498 if (!ctx) 1499 return NULL; 1500 1501 ctx->indir_size = indir_size; 1502 ctx->key_size = key_size; 1503 ctx->key_off = key_off; 1504 ctx->priv_size = ops->rxfh_priv_size; 1505 1506 ctx->hfunc = ETH_RSS_HASH_NO_CHANGE; 1507 ctx->input_xfrm = RXH_XFRM_NO_CHANGE; 1508 1509 return ctx; 1510 } 1511 1512 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, 1513 void __user *useraddr) 1514 { 1515 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); 1516 const struct ethtool_ops *ops = dev->ethtool_ops; 1517 u32 dev_indir_size = 0, dev_key_size = 0, i; 1518 u32 user_indir_len = 0, indir_bytes = 0; 1519 struct ethtool_rxfh_param rxfh_dev = {}; 1520 struct ethtool_rxfh_context *ctx = NULL; 1521 struct netlink_ext_ack *extack = NULL; 1522 struct ethtool_rxnfc rx_rings; 1523 struct ethtool_rxfh rxfh; 1524 bool create = false; 1525 bool mod = false; 1526 u8 *rss_config; 1527 int ret; 1528 1529 if (!ops->get_rxnfc || !ops->set_rxfh) 1530 return -EOPNOTSUPP; 1531 1532 if (ops->get_rxfh_indir_size) 1533 dev_indir_size = ops->get_rxfh_indir_size(dev); 1534 if (ops->get_rxfh_key_size) 1535 dev_key_size = ops->get_rxfh_key_size(dev); 1536 1537 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1538 return -EFAULT; 1539 1540 /* Check that reserved fields are 0 for now */ 1541 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1542 return -EINVAL; 1543 /* Most drivers don't handle rss_context, check it's 0 as well */ 1544 if (rxfh.rss_context && !ops->create_rxfh_context) 1545 return -EOPNOTSUPP; 1546 /* Check input data transformation capabilities */ 1547 if (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_SYM_XOR && 1548 rxfh.input_xfrm != RXH_XFRM_SYM_OR_XOR && 1549 rxfh.input_xfrm != RXH_XFRM_NO_CHANGE) 1550 return -EINVAL; 1551 if (rxfh.input_xfrm != RXH_XFRM_NO_CHANGE && 1552 rxfh.input_xfrm & ~ops->supported_input_xfrm) 1553 return -EOPNOTSUPP; 1554 create = rxfh.rss_context == ETH_RXFH_CONTEXT_ALLOC; 1555 1556 if ((rxfh.indir_size && 1557 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && 1558 rxfh.indir_size != dev_indir_size) || 1559 (rxfh.key_size && rxfh.key_size != dev_key_size)) 1560 return -EINVAL; 1561 1562 /* Must request at least one change: indir size, hash key, function 1563 * or input transformation. 1564 * There's no need for any of it in case of context creation. 1565 */ 1566 if (!create && 1567 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && 1568 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE && 1569 rxfh.input_xfrm == RXH_XFRM_NO_CHANGE)) 1570 return -EINVAL; 1571 1572 indir_bytes = dev_indir_size * sizeof(rxfh_dev.indir[0]); 1573 1574 /* Check settings which may be global rather than per RSS-context */ 1575 if (rxfh.rss_context && !ops->rxfh_per_ctx_key) 1576 if (rxfh.key_size || 1577 (rxfh.hfunc && rxfh.hfunc != ETH_RSS_HASH_NO_CHANGE) || 1578 (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_NO_CHANGE)) 1579 return -EOPNOTSUPP; 1580 1581 rss_config = kzalloc(indir_bytes + dev_key_size, GFP_USER); 1582 if (!rss_config) 1583 return -ENOMEM; 1584 1585 rx_rings.cmd = ETHTOOL_GRXRINGS; 1586 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1587 if (ret) 1588 goto out_free; 1589 1590 /* rxfh.indir_size == 0 means reset the indir table to default (master 1591 * context) or delete the context (other RSS contexts). 1592 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. 1593 */ 1594 if (rxfh.indir_size && 1595 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { 1596 user_indir_len = indir_bytes; 1597 rxfh_dev.indir = (u32 *)rss_config; 1598 rxfh_dev.indir_size = dev_indir_size; 1599 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1600 useraddr + rss_cfg_offset, 1601 &rx_rings, 1602 rxfh.indir_size); 1603 if (ret) 1604 goto out_free; 1605 } else if (rxfh.indir_size == 0) { 1606 if (rxfh.rss_context == 0) { 1607 u32 *indir; 1608 1609 rxfh_dev.indir = (u32 *)rss_config; 1610 rxfh_dev.indir_size = dev_indir_size; 1611 indir = rxfh_dev.indir; 1612 for (i = 0; i < dev_indir_size; i++) 1613 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1614 } else { 1615 rxfh_dev.rss_delete = true; 1616 } 1617 } 1618 1619 if (rxfh.key_size) { 1620 rxfh_dev.key_size = dev_key_size; 1621 rxfh_dev.key = rss_config + indir_bytes; 1622 if (copy_from_user(rxfh_dev.key, 1623 useraddr + rss_cfg_offset + user_indir_len, 1624 rxfh.key_size)) { 1625 ret = -EFAULT; 1626 goto out_free; 1627 } 1628 } 1629 1630 mutex_lock(&dev->ethtool->rss_lock); 1631 1632 ret = ethtool_check_flow_types(dev, rxfh.input_xfrm); 1633 if (ret) 1634 goto out_unlock; 1635 1636 if (rxfh.rss_context && rxfh_dev.rss_delete) { 1637 ret = ethtool_check_rss_ctx_busy(dev, rxfh.rss_context); 1638 if (ret) 1639 goto out_unlock; 1640 } 1641 1642 if (create) { 1643 u32 limit, ctx_id; 1644 1645 if (rxfh_dev.rss_delete) { 1646 ret = -EINVAL; 1647 goto out_unlock; 1648 } 1649 ctx = ethtool_rxfh_ctx_alloc(ops, dev_indir_size, dev_key_size); 1650 if (!ctx) { 1651 ret = -ENOMEM; 1652 goto out_unlock; 1653 } 1654 1655 limit = ops->rxfh_max_num_contexts ?: U32_MAX; 1656 ret = xa_alloc(&dev->ethtool->rss_ctx, &ctx_id, ctx, 1657 XA_LIMIT(1, limit - 1), GFP_KERNEL_ACCOUNT); 1658 if (ret < 0) { 1659 kfree(ctx); 1660 goto out_unlock; 1661 } 1662 WARN_ON(!ctx_id); /* can't happen */ 1663 rxfh.rss_context = ctx_id; 1664 } else if (rxfh.rss_context) { 1665 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1666 if (!ctx) { 1667 ret = -ENOENT; 1668 goto out_unlock; 1669 } 1670 } 1671 rxfh_dev.hfunc = rxfh.hfunc; 1672 rxfh_dev.rss_context = rxfh.rss_context; 1673 rxfh_dev.input_xfrm = rxfh.input_xfrm; 1674 1675 if (!rxfh.rss_context) { 1676 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1677 } else if (create) { 1678 ret = ops->create_rxfh_context(dev, ctx, &rxfh_dev, extack); 1679 /* Make sure driver populates defaults */ 1680 WARN_ON_ONCE(!ret && !rxfh_dev.key && ops->rxfh_per_ctx_key && 1681 !memchr_inv(ethtool_rxfh_context_key(ctx), 0, 1682 ctx->key_size)); 1683 } else if (rxfh_dev.rss_delete) { 1684 ret = ops->remove_rxfh_context(dev, ctx, rxfh.rss_context, 1685 extack); 1686 } else { 1687 ret = ops->modify_rxfh_context(dev, ctx, &rxfh_dev, extack); 1688 } 1689 if (ret) { 1690 if (create) { 1691 /* failed to create, free our new tracking entry */ 1692 xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context); 1693 kfree(ctx); 1694 } 1695 goto out_unlock; 1696 } 1697 mod = !create && !rxfh_dev.rss_delete; 1698 1699 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), 1700 &rxfh_dev.rss_context, sizeof(rxfh_dev.rss_context))) 1701 ret = -EFAULT; 1702 1703 if (!rxfh_dev.rss_context) { 1704 /* indicate whether rxfh was set to default */ 1705 if (rxfh.indir_size == 0) 1706 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1707 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1708 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1709 } 1710 /* Update rss_ctx tracking */ 1711 if (rxfh_dev.rss_delete) { 1712 WARN_ON(xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context) != ctx); 1713 kfree(ctx); 1714 } else if (ctx) { 1715 if (rxfh_dev.indir) { 1716 for (i = 0; i < dev_indir_size; i++) 1717 ethtool_rxfh_context_indir(ctx)[i] = rxfh_dev.indir[i]; 1718 ctx->indir_configured = 1719 rxfh.indir_size && 1720 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE; 1721 } 1722 if (rxfh_dev.key) { 1723 memcpy(ethtool_rxfh_context_key(ctx), rxfh_dev.key, 1724 dev_key_size); 1725 ctx->key_configured = !!rxfh.key_size; 1726 } 1727 if (rxfh_dev.hfunc != ETH_RSS_HASH_NO_CHANGE) 1728 ctx->hfunc = rxfh_dev.hfunc; 1729 if (rxfh_dev.input_xfrm != RXH_XFRM_NO_CHANGE) 1730 ctx->input_xfrm = rxfh_dev.input_xfrm; 1731 } 1732 1733 out_unlock: 1734 mutex_unlock(&dev->ethtool->rss_lock); 1735 out_free: 1736 kfree(rss_config); 1737 if (mod) 1738 ethtool_rss_notify(dev, rxfh.rss_context); 1739 return ret; 1740 } 1741 1742 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) 1743 { 1744 struct ethtool_regs regs; 1745 const struct ethtool_ops *ops = dev->ethtool_ops; 1746 void *regbuf; 1747 int reglen, ret; 1748 1749 if (!ops->get_regs || !ops->get_regs_len) 1750 return -EOPNOTSUPP; 1751 1752 if (copy_from_user(®s, useraddr, sizeof(regs))) 1753 return -EFAULT; 1754 1755 reglen = ops->get_regs_len(dev); 1756 if (reglen <= 0) 1757 return reglen; 1758 1759 if (regs.len > reglen) 1760 regs.len = reglen; 1761 1762 regbuf = vzalloc(reglen); 1763 if (!regbuf) 1764 return -ENOMEM; 1765 1766 if (regs.len < reglen) 1767 reglen = regs.len; 1768 1769 ops->get_regs(dev, ®s, regbuf); 1770 1771 ret = -EFAULT; 1772 if (copy_to_user(useraddr, ®s, sizeof(regs))) 1773 goto out; 1774 useraddr += offsetof(struct ethtool_regs, data); 1775 if (copy_to_user(useraddr, regbuf, reglen)) 1776 goto out; 1777 ret = 0; 1778 1779 out: 1780 vfree(regbuf); 1781 return ret; 1782 } 1783 1784 static int ethtool_reset(struct net_device *dev, char __user *useraddr) 1785 { 1786 struct ethtool_value reset; 1787 int ret; 1788 1789 if (!dev->ethtool_ops->reset) 1790 return -EOPNOTSUPP; 1791 1792 if (dev->ethtool->module_fw_flash_in_progress) 1793 return -EBUSY; 1794 1795 if (copy_from_user(&reset, useraddr, sizeof(reset))) 1796 return -EFAULT; 1797 1798 ret = dev->ethtool_ops->reset(dev, &reset.data); 1799 if (ret) 1800 return ret; 1801 1802 if (copy_to_user(useraddr, &reset, sizeof(reset))) 1803 return -EFAULT; 1804 return 0; 1805 } 1806 1807 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) 1808 { 1809 struct ethtool_wolinfo wol; 1810 1811 if (!dev->ethtool_ops->get_wol) 1812 return -EOPNOTSUPP; 1813 1814 memset(&wol, 0, sizeof(struct ethtool_wolinfo)); 1815 wol.cmd = ETHTOOL_GWOL; 1816 dev->ethtool_ops->get_wol(dev, &wol); 1817 1818 if (copy_to_user(useraddr, &wol, sizeof(wol))) 1819 return -EFAULT; 1820 return 0; 1821 } 1822 1823 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) 1824 { 1825 struct ethtool_wolinfo wol, cur_wol; 1826 int ret; 1827 1828 if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol) 1829 return -EOPNOTSUPP; 1830 1831 memset(&cur_wol, 0, sizeof(struct ethtool_wolinfo)); 1832 cur_wol.cmd = ETHTOOL_GWOL; 1833 dev->ethtool_ops->get_wol(dev, &cur_wol); 1834 1835 if (copy_from_user(&wol, useraddr, sizeof(wol))) 1836 return -EFAULT; 1837 1838 if (wol.wolopts & ~cur_wol.supported) 1839 return -EINVAL; 1840 1841 if (wol.wolopts == cur_wol.wolopts && 1842 !memcmp(wol.sopass, cur_wol.sopass, sizeof(wol.sopass))) 1843 return 0; 1844 1845 ret = dev->ethtool_ops->set_wol(dev, &wol); 1846 if (ret) 1847 return ret; 1848 1849 dev->ethtool->wol_enabled = !!wol.wolopts; 1850 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF); 1851 1852 return 0; 1853 } 1854 1855 static void eee_to_keee(struct ethtool_keee *keee, 1856 const struct ethtool_eee *eee) 1857 { 1858 memset(keee, 0, sizeof(*keee)); 1859 1860 keee->eee_enabled = eee->eee_enabled; 1861 keee->tx_lpi_enabled = eee->tx_lpi_enabled; 1862 keee->tx_lpi_timer = eee->tx_lpi_timer; 1863 1864 ethtool_convert_legacy_u32_to_link_mode(keee->advertised, 1865 eee->advertised); 1866 } 1867 1868 static void keee_to_eee(struct ethtool_eee *eee, 1869 const struct ethtool_keee *keee) 1870 { 1871 bool overflow; 1872 1873 memset(eee, 0, sizeof(*eee)); 1874 1875 eee->eee_active = keee->eee_active; 1876 eee->eee_enabled = keee->eee_enabled; 1877 eee->tx_lpi_enabled = keee->tx_lpi_enabled; 1878 eee->tx_lpi_timer = keee->tx_lpi_timer; 1879 1880 overflow = !ethtool_convert_link_mode_to_legacy_u32(&eee->supported, 1881 keee->supported); 1882 ethtool_convert_link_mode_to_legacy_u32(&eee->advertised, 1883 keee->advertised); 1884 ethtool_convert_link_mode_to_legacy_u32(&eee->lp_advertised, 1885 keee->lp_advertised); 1886 if (overflow) 1887 pr_warn("Ethtool ioctl interface doesn't support passing EEE linkmodes beyond bit 32\n"); 1888 } 1889 1890 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) 1891 { 1892 struct ethtool_keee keee; 1893 struct ethtool_eee eee; 1894 int rc; 1895 1896 if (!dev->ethtool_ops->get_eee) 1897 return -EOPNOTSUPP; 1898 1899 memset(&keee, 0, sizeof(keee)); 1900 rc = dev->ethtool_ops->get_eee(dev, &keee); 1901 if (rc) 1902 return rc; 1903 1904 keee_to_eee(&eee, &keee); 1905 if (copy_to_user(useraddr, &eee, sizeof(eee))) 1906 return -EFAULT; 1907 1908 return 0; 1909 } 1910 1911 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) 1912 { 1913 struct ethtool_keee keee; 1914 struct ethtool_eee eee; 1915 int ret; 1916 1917 if (!dev->ethtool_ops->set_eee) 1918 return -EOPNOTSUPP; 1919 1920 if (copy_from_user(&eee, useraddr, sizeof(eee))) 1921 return -EFAULT; 1922 1923 eee_to_keee(&keee, &eee); 1924 ret = dev->ethtool_ops->set_eee(dev, &keee); 1925 if (!ret) 1926 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF); 1927 return ret; 1928 } 1929 1930 static int ethtool_nway_reset(struct net_device *dev) 1931 { 1932 if (!dev->ethtool_ops->nway_reset) 1933 return -EOPNOTSUPP; 1934 1935 return dev->ethtool_ops->nway_reset(dev); 1936 } 1937 1938 static int ethtool_get_link(struct net_device *dev, char __user *useraddr) 1939 { 1940 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; 1941 int link = __ethtool_get_link(dev); 1942 1943 if (link < 0) 1944 return link; 1945 1946 edata.data = link; 1947 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1948 return -EFAULT; 1949 return 0; 1950 } 1951 1952 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, 1953 int (*getter)(struct net_device *, 1954 struct ethtool_eeprom *, u8 *), 1955 u32 total_len) 1956 { 1957 struct ethtool_eeprom eeprom; 1958 void __user *userbuf = useraddr + sizeof(eeprom); 1959 u32 bytes_remaining; 1960 u8 *data; 1961 int ret = 0; 1962 1963 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1964 return -EFAULT; 1965 1966 /* Check for wrap and zero */ 1967 if (eeprom.offset + eeprom.len <= eeprom.offset) 1968 return -EINVAL; 1969 1970 /* Check for exceeding total eeprom len */ 1971 if (eeprom.offset + eeprom.len > total_len) 1972 return -EINVAL; 1973 1974 data = kzalloc(PAGE_SIZE, GFP_USER); 1975 if (!data) 1976 return -ENOMEM; 1977 1978 bytes_remaining = eeprom.len; 1979 while (bytes_remaining > 0) { 1980 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1981 1982 ret = getter(dev, &eeprom, data); 1983 if (ret) 1984 break; 1985 if (!eeprom.len) { 1986 ret = -EIO; 1987 break; 1988 } 1989 if (copy_to_user(userbuf, data, eeprom.len)) { 1990 ret = -EFAULT; 1991 break; 1992 } 1993 userbuf += eeprom.len; 1994 eeprom.offset += eeprom.len; 1995 bytes_remaining -= eeprom.len; 1996 } 1997 1998 eeprom.len = userbuf - (useraddr + sizeof(eeprom)); 1999 eeprom.offset -= eeprom.len; 2000 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) 2001 ret = -EFAULT; 2002 2003 kfree(data); 2004 return ret; 2005 } 2006 2007 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) 2008 { 2009 const struct ethtool_ops *ops = dev->ethtool_ops; 2010 2011 if (!ops->get_eeprom || !ops->get_eeprom_len || 2012 !ops->get_eeprom_len(dev)) 2013 return -EOPNOTSUPP; 2014 2015 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, 2016 ops->get_eeprom_len(dev)); 2017 } 2018 2019 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) 2020 { 2021 struct ethtool_eeprom eeprom; 2022 const struct ethtool_ops *ops = dev->ethtool_ops; 2023 void __user *userbuf = useraddr + sizeof(eeprom); 2024 u32 bytes_remaining; 2025 u8 *data; 2026 int ret = 0; 2027 2028 if (!ops->set_eeprom || !ops->get_eeprom_len || 2029 !ops->get_eeprom_len(dev)) 2030 return -EOPNOTSUPP; 2031 2032 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 2033 return -EFAULT; 2034 2035 /* Check for wrap and zero */ 2036 if (eeprom.offset + eeprom.len <= eeprom.offset) 2037 return -EINVAL; 2038 2039 /* Check for exceeding total eeprom len */ 2040 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) 2041 return -EINVAL; 2042 2043 data = kzalloc(PAGE_SIZE, GFP_USER); 2044 if (!data) 2045 return -ENOMEM; 2046 2047 bytes_remaining = eeprom.len; 2048 while (bytes_remaining > 0) { 2049 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 2050 2051 if (copy_from_user(data, userbuf, eeprom.len)) { 2052 ret = -EFAULT; 2053 break; 2054 } 2055 ret = ops->set_eeprom(dev, &eeprom, data); 2056 if (ret) 2057 break; 2058 userbuf += eeprom.len; 2059 eeprom.offset += eeprom.len; 2060 bytes_remaining -= eeprom.len; 2061 } 2062 2063 kfree(data); 2064 return ret; 2065 } 2066 2067 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, 2068 void __user *useraddr) 2069 { 2070 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2071 struct kernel_ethtool_coalesce kernel_coalesce = {}; 2072 int ret; 2073 2074 if (!dev->ethtool_ops->get_coalesce) 2075 return -EOPNOTSUPP; 2076 2077 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 2078 NULL); 2079 if (ret) 2080 return ret; 2081 2082 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2083 return -EFAULT; 2084 return 0; 2085 } 2086 2087 static bool 2088 ethtool_set_coalesce_supported(struct net_device *dev, 2089 struct ethtool_coalesce *coalesce) 2090 { 2091 u32 supported_params = dev->ethtool_ops->supported_coalesce_params; 2092 u32 nonzero_params = 0; 2093 2094 if (coalesce->rx_coalesce_usecs) 2095 nonzero_params |= ETHTOOL_COALESCE_RX_USECS; 2096 if (coalesce->rx_max_coalesced_frames) 2097 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; 2098 if (coalesce->rx_coalesce_usecs_irq) 2099 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; 2100 if (coalesce->rx_max_coalesced_frames_irq) 2101 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; 2102 if (coalesce->tx_coalesce_usecs) 2103 nonzero_params |= ETHTOOL_COALESCE_TX_USECS; 2104 if (coalesce->tx_max_coalesced_frames) 2105 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; 2106 if (coalesce->tx_coalesce_usecs_irq) 2107 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; 2108 if (coalesce->tx_max_coalesced_frames_irq) 2109 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; 2110 if (coalesce->stats_block_coalesce_usecs) 2111 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; 2112 if (coalesce->use_adaptive_rx_coalesce) 2113 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; 2114 if (coalesce->use_adaptive_tx_coalesce) 2115 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; 2116 if (coalesce->pkt_rate_low) 2117 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; 2118 if (coalesce->rx_coalesce_usecs_low) 2119 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; 2120 if (coalesce->rx_max_coalesced_frames_low) 2121 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; 2122 if (coalesce->tx_coalesce_usecs_low) 2123 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; 2124 if (coalesce->tx_max_coalesced_frames_low) 2125 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; 2126 if (coalesce->pkt_rate_high) 2127 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; 2128 if (coalesce->rx_coalesce_usecs_high) 2129 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; 2130 if (coalesce->rx_max_coalesced_frames_high) 2131 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; 2132 if (coalesce->tx_coalesce_usecs_high) 2133 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; 2134 if (coalesce->tx_max_coalesced_frames_high) 2135 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; 2136 if (coalesce->rate_sample_interval) 2137 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; 2138 2139 return (supported_params & nonzero_params) == nonzero_params; 2140 } 2141 2142 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, 2143 void __user *useraddr) 2144 { 2145 struct kernel_ethtool_coalesce kernel_coalesce = {}; 2146 struct ethtool_coalesce coalesce; 2147 int ret; 2148 2149 if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce) 2150 return -EOPNOTSUPP; 2151 2152 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 2153 NULL); 2154 if (ret) 2155 return ret; 2156 2157 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) 2158 return -EFAULT; 2159 2160 if (!ethtool_set_coalesce_supported(dev, &coalesce)) 2161 return -EOPNOTSUPP; 2162 2163 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, 2164 NULL); 2165 if (!ret) 2166 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF); 2167 return ret; 2168 } 2169 2170 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) 2171 { 2172 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; 2173 struct kernel_ethtool_ringparam kernel_ringparam = {}; 2174 2175 if (!dev->ethtool_ops->get_ringparam) 2176 return -EOPNOTSUPP; 2177 2178 dev->ethtool_ops->get_ringparam(dev, &ringparam, 2179 &kernel_ringparam, NULL); 2180 2181 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) 2182 return -EFAULT; 2183 return 0; 2184 } 2185 2186 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) 2187 { 2188 struct kernel_ethtool_ringparam kernel_ringparam; 2189 struct ethtool_ringparam ringparam, max; 2190 int ret; 2191 2192 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) 2193 return -EOPNOTSUPP; 2194 2195 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) 2196 return -EFAULT; 2197 2198 ethtool_ringparam_get_cfg(dev, &max, &kernel_ringparam, NULL); 2199 2200 /* ensure new ring parameters are within the maximums */ 2201 if (ringparam.rx_pending > max.rx_max_pending || 2202 ringparam.rx_mini_pending > max.rx_mini_max_pending || 2203 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || 2204 ringparam.tx_pending > max.tx_max_pending) 2205 return -EINVAL; 2206 2207 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, 2208 &kernel_ringparam, NULL); 2209 if (!ret) 2210 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF); 2211 return ret; 2212 } 2213 2214 static noinline_for_stack int ethtool_get_channels(struct net_device *dev, 2215 void __user *useraddr) 2216 { 2217 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; 2218 2219 if (!dev->ethtool_ops->get_channels) 2220 return -EOPNOTSUPP; 2221 2222 dev->ethtool_ops->get_channels(dev, &channels); 2223 2224 if (copy_to_user(useraddr, &channels, sizeof(channels))) 2225 return -EFAULT; 2226 return 0; 2227 } 2228 2229 static noinline_for_stack int ethtool_set_channels(struct net_device *dev, 2230 void __user *useraddr) 2231 { 2232 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; 2233 u16 from_channel, to_channel; 2234 unsigned int i; 2235 int ret; 2236 2237 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) 2238 return -EOPNOTSUPP; 2239 2240 if (copy_from_user(&channels, useraddr, sizeof(channels))) 2241 return -EFAULT; 2242 2243 dev->ethtool_ops->get_channels(dev, &curr); 2244 2245 if (channels.rx_count == curr.rx_count && 2246 channels.tx_count == curr.tx_count && 2247 channels.combined_count == curr.combined_count && 2248 channels.other_count == curr.other_count) 2249 return 0; 2250 2251 /* ensure new counts are within the maximums */ 2252 if (channels.rx_count > curr.max_rx || 2253 channels.tx_count > curr.max_tx || 2254 channels.combined_count > curr.max_combined || 2255 channels.other_count > curr.max_other) 2256 return -EINVAL; 2257 2258 /* ensure there is at least one RX and one TX channel */ 2259 if (!channels.combined_count && 2260 (!channels.rx_count || !channels.tx_count)) 2261 return -EINVAL; 2262 2263 ret = ethtool_check_max_channel(dev, channels, NULL); 2264 if (ret) 2265 return ret; 2266 2267 /* Disabling channels, query zero-copy AF_XDP sockets */ 2268 from_channel = channels.combined_count + 2269 min(channels.rx_count, channels.tx_count); 2270 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); 2271 for (i = from_channel; i < to_channel; i++) 2272 if (xsk_get_pool_from_qid(dev, i)) 2273 return -EINVAL; 2274 2275 ret = dev->ethtool_ops->set_channels(dev, &channels); 2276 if (!ret) 2277 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF); 2278 return ret; 2279 } 2280 2281 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) 2282 { 2283 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; 2284 2285 if (!dev->ethtool_ops->get_pauseparam) 2286 return -EOPNOTSUPP; 2287 2288 dev->ethtool_ops->get_pauseparam(dev, &pauseparam); 2289 2290 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) 2291 return -EFAULT; 2292 return 0; 2293 } 2294 2295 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) 2296 { 2297 struct ethtool_pauseparam pauseparam; 2298 int ret; 2299 2300 if (!dev->ethtool_ops->set_pauseparam) 2301 return -EOPNOTSUPP; 2302 2303 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) 2304 return -EFAULT; 2305 2306 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); 2307 if (!ret) 2308 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF); 2309 return ret; 2310 } 2311 2312 static int ethtool_self_test(struct net_device *dev, char __user *useraddr) 2313 { 2314 struct ethtool_test test; 2315 const struct ethtool_ops *ops = dev->ethtool_ops; 2316 u64 *data; 2317 int ret, test_len; 2318 2319 if (!ops->self_test || !ops->get_sset_count) 2320 return -EOPNOTSUPP; 2321 2322 test_len = ops->get_sset_count(dev, ETH_SS_TEST); 2323 if (test_len < 0) 2324 return test_len; 2325 WARN_ON(test_len == 0); 2326 2327 if (copy_from_user(&test, useraddr, sizeof(test))) 2328 return -EFAULT; 2329 2330 test.len = test_len; 2331 data = kcalloc(test_len, sizeof(u64), GFP_USER); 2332 if (!data) 2333 return -ENOMEM; 2334 2335 netif_testing_on(dev); 2336 ops->self_test(dev, &test, data); 2337 netif_testing_off(dev); 2338 2339 ret = -EFAULT; 2340 if (copy_to_user(useraddr, &test, sizeof(test))) 2341 goto out; 2342 useraddr += sizeof(test); 2343 if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) 2344 goto out; 2345 ret = 0; 2346 2347 out: 2348 kfree(data); 2349 return ret; 2350 } 2351 2352 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) 2353 { 2354 struct ethtool_gstrings gstrings; 2355 u8 *data; 2356 int ret; 2357 2358 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) 2359 return -EFAULT; 2360 2361 ret = __ethtool_get_sset_count(dev, gstrings.string_set); 2362 if (ret < 0) 2363 return ret; 2364 if (ret > S32_MAX / ETH_GSTRING_LEN) 2365 return -ENOMEM; 2366 WARN_ON_ONCE(!ret); 2367 2368 gstrings.len = ret; 2369 2370 if (gstrings.len) { 2371 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); 2372 if (!data) 2373 return -ENOMEM; 2374 2375 __ethtool_get_strings(dev, gstrings.string_set, data); 2376 } else { 2377 data = NULL; 2378 } 2379 2380 ret = -EFAULT; 2381 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) 2382 goto out; 2383 useraddr += sizeof(gstrings); 2384 if (gstrings.len && 2385 copy_to_user(useraddr, data, 2386 array_size(gstrings.len, ETH_GSTRING_LEN))) 2387 goto out; 2388 ret = 0; 2389 2390 out: 2391 vfree(data); 2392 return ret; 2393 } 2394 2395 __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) 2396 { 2397 va_list args; 2398 2399 va_start(args, fmt); 2400 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); 2401 va_end(args); 2402 2403 *data += ETH_GSTRING_LEN; 2404 } 2405 EXPORT_SYMBOL(ethtool_sprintf); 2406 2407 void ethtool_puts(u8 **data, const char *str) 2408 { 2409 strscpy(*data, str, ETH_GSTRING_LEN); 2410 *data += ETH_GSTRING_LEN; 2411 } 2412 EXPORT_SYMBOL(ethtool_puts); 2413 2414 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) 2415 { 2416 struct ethtool_value id; 2417 static bool busy; 2418 const struct ethtool_ops *ops = dev->ethtool_ops; 2419 netdevice_tracker dev_tracker; 2420 int rc; 2421 2422 if (!ops->set_phys_id) 2423 return -EOPNOTSUPP; 2424 2425 if (busy) 2426 return -EBUSY; 2427 2428 if (copy_from_user(&id, useraddr, sizeof(id))) 2429 return -EFAULT; 2430 2431 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); 2432 if (rc < 0) 2433 return rc; 2434 2435 /* Drop the RTNL lock while waiting, but prevent reentry or 2436 * removal of the device. 2437 */ 2438 busy = true; 2439 netdev_hold(dev, &dev_tracker, GFP_KERNEL); 2440 netdev_unlock_ops(dev); 2441 rtnl_unlock(); 2442 2443 if (rc == 0) { 2444 /* Driver will handle this itself */ 2445 schedule_timeout_interruptible( 2446 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); 2447 } else { 2448 /* Driver expects to be called at twice the frequency in rc */ 2449 int n = rc * 2, interval = HZ / n; 2450 u64 count = mul_u32_u32(n, id.data); 2451 u64 i = 0; 2452 2453 do { 2454 rtnl_lock(); 2455 netdev_lock_ops(dev); 2456 rc = ops->set_phys_id(dev, 2457 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); 2458 netdev_unlock_ops(dev); 2459 rtnl_unlock(); 2460 if (rc) 2461 break; 2462 schedule_timeout_interruptible(interval); 2463 } while (!signal_pending(current) && (!id.data || i < count)); 2464 } 2465 2466 rtnl_lock(); 2467 netdev_lock_ops(dev); 2468 netdev_put(dev, &dev_tracker); 2469 busy = false; 2470 2471 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); 2472 return rc; 2473 } 2474 2475 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) 2476 { 2477 struct ethtool_stats stats; 2478 const struct ethtool_ops *ops = dev->ethtool_ops; 2479 u64 *data; 2480 int ret, n_stats; 2481 2482 if (!ops->get_ethtool_stats || !ops->get_sset_count) 2483 return -EOPNOTSUPP; 2484 2485 n_stats = ops->get_sset_count(dev, ETH_SS_STATS); 2486 if (n_stats < 0) 2487 return n_stats; 2488 if (n_stats > S32_MAX / sizeof(u64)) 2489 return -ENOMEM; 2490 WARN_ON_ONCE(!n_stats); 2491 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2492 return -EFAULT; 2493 2494 stats.n_stats = n_stats; 2495 2496 if (n_stats) { 2497 data = vzalloc(array_size(n_stats, sizeof(u64))); 2498 if (!data) 2499 return -ENOMEM; 2500 ops->get_ethtool_stats(dev, &stats, data); 2501 } else { 2502 data = NULL; 2503 } 2504 2505 ret = -EFAULT; 2506 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2507 goto out; 2508 useraddr += sizeof(stats); 2509 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) 2510 goto out; 2511 ret = 0; 2512 2513 out: 2514 vfree(data); 2515 return ret; 2516 } 2517 2518 static int ethtool_vzalloc_stats_array(int n_stats, u64 **data) 2519 { 2520 if (n_stats < 0) 2521 return n_stats; 2522 if (n_stats > S32_MAX / sizeof(u64)) 2523 return -ENOMEM; 2524 if (WARN_ON_ONCE(!n_stats)) 2525 return -EOPNOTSUPP; 2526 2527 *data = vzalloc(array_size(n_stats, sizeof(u64))); 2528 if (!*data) 2529 return -ENOMEM; 2530 2531 return 0; 2532 } 2533 2534 static int ethtool_get_phy_stats_phydev(struct phy_device *phydev, 2535 struct ethtool_stats *stats, 2536 u64 **data) 2537 { 2538 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 2539 int n_stats, ret; 2540 2541 if (!phy_ops || !phy_ops->get_sset_count || !phy_ops->get_stats) 2542 return -EOPNOTSUPP; 2543 2544 n_stats = phy_ops->get_sset_count(phydev); 2545 2546 ret = ethtool_vzalloc_stats_array(n_stats, data); 2547 if (ret) 2548 return ret; 2549 2550 stats->n_stats = n_stats; 2551 return phy_ops->get_stats(phydev, stats, *data); 2552 } 2553 2554 static int ethtool_get_phy_stats_ethtool(struct net_device *dev, 2555 struct ethtool_stats *stats, 2556 u64 **data) 2557 { 2558 const struct ethtool_ops *ops = dev->ethtool_ops; 2559 int n_stats, ret; 2560 2561 if (!ops || !ops->get_sset_count || !ops->get_ethtool_phy_stats) 2562 return -EOPNOTSUPP; 2563 2564 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); 2565 2566 ret = ethtool_vzalloc_stats_array(n_stats, data); 2567 if (ret) 2568 return ret; 2569 2570 stats->n_stats = n_stats; 2571 ops->get_ethtool_phy_stats(dev, stats, *data); 2572 2573 return 0; 2574 } 2575 2576 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) 2577 { 2578 struct phy_device *phydev = dev->phydev; 2579 struct ethtool_stats stats; 2580 u64 *data = NULL; 2581 int ret = -EOPNOTSUPP; 2582 2583 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2584 return -EFAULT; 2585 2586 if (phydev) 2587 ret = ethtool_get_phy_stats_phydev(phydev, &stats, &data); 2588 2589 if (ret == -EOPNOTSUPP) 2590 ret = ethtool_get_phy_stats_ethtool(dev, &stats, &data); 2591 2592 if (ret) 2593 goto out; 2594 2595 if (copy_to_user(useraddr, &stats, sizeof(stats))) { 2596 ret = -EFAULT; 2597 goto out; 2598 } 2599 2600 useraddr += sizeof(stats); 2601 if (copy_to_user(useraddr, data, array_size(stats.n_stats, sizeof(u64)))) 2602 ret = -EFAULT; 2603 2604 out: 2605 vfree(data); 2606 return ret; 2607 } 2608 2609 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) 2610 { 2611 struct ethtool_perm_addr epaddr; 2612 2613 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) 2614 return -EFAULT; 2615 2616 if (epaddr.size < dev->addr_len) 2617 return -ETOOSMALL; 2618 epaddr.size = dev->addr_len; 2619 2620 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) 2621 return -EFAULT; 2622 useraddr += sizeof(epaddr); 2623 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) 2624 return -EFAULT; 2625 return 0; 2626 } 2627 2628 static int ethtool_get_value(struct net_device *dev, char __user *useraddr, 2629 u32 cmd, u32 (*actor)(struct net_device *)) 2630 { 2631 struct ethtool_value edata = { .cmd = cmd }; 2632 2633 if (!actor) 2634 return -EOPNOTSUPP; 2635 2636 edata.data = actor(dev); 2637 2638 if (copy_to_user(useraddr, &edata, sizeof(edata))) 2639 return -EFAULT; 2640 return 0; 2641 } 2642 2643 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, 2644 void (*actor)(struct net_device *, u32)) 2645 { 2646 struct ethtool_value edata; 2647 2648 if (!actor) 2649 return -EOPNOTSUPP; 2650 2651 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2652 return -EFAULT; 2653 2654 actor(dev, edata.data); 2655 return 0; 2656 } 2657 2658 static int ethtool_set_value(struct net_device *dev, char __user *useraddr, 2659 int (*actor)(struct net_device *, u32)) 2660 { 2661 struct ethtool_value edata; 2662 2663 if (!actor) 2664 return -EOPNOTSUPP; 2665 2666 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2667 return -EFAULT; 2668 2669 return actor(dev, edata.data); 2670 } 2671 2672 static int 2673 ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) 2674 { 2675 if (!dev->ethtool_ops->flash_device) { 2676 req->devlink = netdev_to_devlink_get(dev); 2677 return 0; 2678 } 2679 2680 return dev->ethtool_ops->flash_device(dev, &req->efl); 2681 } 2682 2683 static int ethtool_set_dump(struct net_device *dev, 2684 void __user *useraddr) 2685 { 2686 struct ethtool_dump dump; 2687 2688 if (!dev->ethtool_ops->set_dump) 2689 return -EOPNOTSUPP; 2690 2691 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2692 return -EFAULT; 2693 2694 return dev->ethtool_ops->set_dump(dev, &dump); 2695 } 2696 2697 static int ethtool_get_dump_flag(struct net_device *dev, 2698 void __user *useraddr) 2699 { 2700 int ret; 2701 struct ethtool_dump dump; 2702 const struct ethtool_ops *ops = dev->ethtool_ops; 2703 2704 if (!ops->get_dump_flag) 2705 return -EOPNOTSUPP; 2706 2707 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2708 return -EFAULT; 2709 2710 ret = ops->get_dump_flag(dev, &dump); 2711 if (ret) 2712 return ret; 2713 2714 if (copy_to_user(useraddr, &dump, sizeof(dump))) 2715 return -EFAULT; 2716 return 0; 2717 } 2718 2719 static int ethtool_get_dump_data(struct net_device *dev, 2720 void __user *useraddr) 2721 { 2722 int ret; 2723 __u32 len; 2724 struct ethtool_dump dump, tmp; 2725 const struct ethtool_ops *ops = dev->ethtool_ops; 2726 void *data = NULL; 2727 2728 if (!ops->get_dump_data || !ops->get_dump_flag) 2729 return -EOPNOTSUPP; 2730 2731 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2732 return -EFAULT; 2733 2734 memset(&tmp, 0, sizeof(tmp)); 2735 tmp.cmd = ETHTOOL_GET_DUMP_FLAG; 2736 ret = ops->get_dump_flag(dev, &tmp); 2737 if (ret) 2738 return ret; 2739 2740 len = min(tmp.len, dump.len); 2741 if (!len) 2742 return -EFAULT; 2743 2744 /* Don't ever let the driver think there's more space available 2745 * than it requested with .get_dump_flag(). 2746 */ 2747 dump.len = len; 2748 2749 /* Always allocate enough space to hold the whole thing so that the 2750 * driver does not need to check the length and bother with partial 2751 * dumping. 2752 */ 2753 data = vzalloc(tmp.len); 2754 if (!data) 2755 return -ENOMEM; 2756 ret = ops->get_dump_data(dev, &dump, data); 2757 if (ret) 2758 goto out; 2759 2760 /* There are two sane possibilities: 2761 * 1. The driver's .get_dump_data() does not touch dump.len. 2762 * 2. Or it may set dump.len to how much it really writes, which 2763 * should be tmp.len (or len if it can do a partial dump). 2764 * In any case respond to userspace with the actual length of data 2765 * it's receiving. 2766 */ 2767 WARN_ON(dump.len != len && dump.len != tmp.len); 2768 dump.len = len; 2769 2770 if (copy_to_user(useraddr, &dump, sizeof(dump))) { 2771 ret = -EFAULT; 2772 goto out; 2773 } 2774 useraddr += offsetof(struct ethtool_dump, data); 2775 if (copy_to_user(useraddr, data, len)) 2776 ret = -EFAULT; 2777 out: 2778 vfree(data); 2779 return ret; 2780 } 2781 2782 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) 2783 { 2784 struct kernel_ethtool_ts_info kernel_info; 2785 struct ethtool_ts_info info = {}; 2786 int err; 2787 2788 err = __ethtool_get_ts_info(dev, &kernel_info); 2789 if (err) 2790 return err; 2791 2792 info.cmd = kernel_info.cmd; 2793 info.so_timestamping = kernel_info.so_timestamping; 2794 info.phc_index = kernel_info.phc_index; 2795 info.tx_types = kernel_info.tx_types; 2796 info.rx_filters = kernel_info.rx_filters; 2797 2798 if (copy_to_user(useraddr, &info, sizeof(info))) 2799 return -EFAULT; 2800 2801 return 0; 2802 } 2803 2804 int ethtool_get_module_info_call(struct net_device *dev, 2805 struct ethtool_modinfo *modinfo) 2806 { 2807 const struct ethtool_ops *ops = dev->ethtool_ops; 2808 struct phy_device *phydev = dev->phydev; 2809 2810 if (dev->ethtool->module_fw_flash_in_progress) 2811 return -EBUSY; 2812 2813 if (dev->sfp_bus) 2814 return sfp_get_module_info(dev->sfp_bus, modinfo); 2815 2816 if (phydev && phydev->drv && phydev->drv->module_info) 2817 return phydev->drv->module_info(phydev, modinfo); 2818 2819 if (ops->get_module_info) 2820 return ops->get_module_info(dev, modinfo); 2821 2822 return -EOPNOTSUPP; 2823 } 2824 2825 static int ethtool_get_module_info(struct net_device *dev, 2826 void __user *useraddr) 2827 { 2828 int ret; 2829 struct ethtool_modinfo modinfo; 2830 2831 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) 2832 return -EFAULT; 2833 2834 ret = ethtool_get_module_info_call(dev, &modinfo); 2835 if (ret) 2836 return ret; 2837 2838 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) 2839 return -EFAULT; 2840 2841 return 0; 2842 } 2843 2844 int ethtool_get_module_eeprom_call(struct net_device *dev, 2845 struct ethtool_eeprom *ee, u8 *data) 2846 { 2847 const struct ethtool_ops *ops = dev->ethtool_ops; 2848 struct phy_device *phydev = dev->phydev; 2849 2850 if (dev->ethtool->module_fw_flash_in_progress) 2851 return -EBUSY; 2852 2853 if (dev->sfp_bus) 2854 return sfp_get_module_eeprom(dev->sfp_bus, ee, data); 2855 2856 if (phydev && phydev->drv && phydev->drv->module_eeprom) 2857 return phydev->drv->module_eeprom(phydev, ee, data); 2858 2859 if (ops->get_module_eeprom) 2860 return ops->get_module_eeprom(dev, ee, data); 2861 2862 return -EOPNOTSUPP; 2863 } 2864 2865 static int ethtool_get_module_eeprom(struct net_device *dev, 2866 void __user *useraddr) 2867 { 2868 int ret; 2869 struct ethtool_modinfo modinfo; 2870 2871 ret = ethtool_get_module_info_call(dev, &modinfo); 2872 if (ret) 2873 return ret; 2874 2875 return ethtool_get_any_eeprom(dev, useraddr, 2876 ethtool_get_module_eeprom_call, 2877 modinfo.eeprom_len); 2878 } 2879 2880 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) 2881 { 2882 switch (tuna->id) { 2883 case ETHTOOL_RX_COPYBREAK: 2884 case ETHTOOL_TX_COPYBREAK: 2885 case ETHTOOL_TX_COPYBREAK_BUF_SIZE: 2886 if (tuna->len != sizeof(u32) || 2887 tuna->type_id != ETHTOOL_TUNABLE_U32) 2888 return -EINVAL; 2889 break; 2890 case ETHTOOL_PFC_PREVENTION_TOUT: 2891 if (tuna->len != sizeof(u16) || 2892 tuna->type_id != ETHTOOL_TUNABLE_U16) 2893 return -EINVAL; 2894 break; 2895 default: 2896 return -EINVAL; 2897 } 2898 2899 return 0; 2900 } 2901 2902 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) 2903 { 2904 int ret; 2905 struct ethtool_tunable tuna; 2906 const struct ethtool_ops *ops = dev->ethtool_ops; 2907 void *data; 2908 2909 if (!ops->get_tunable) 2910 return -EOPNOTSUPP; 2911 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2912 return -EFAULT; 2913 ret = ethtool_tunable_valid(&tuna); 2914 if (ret) 2915 return ret; 2916 data = kzalloc(tuna.len, GFP_USER); 2917 if (!data) 2918 return -ENOMEM; 2919 ret = ops->get_tunable(dev, &tuna, data); 2920 if (ret) 2921 goto out; 2922 useraddr += sizeof(tuna); 2923 ret = -EFAULT; 2924 if (copy_to_user(useraddr, data, tuna.len)) 2925 goto out; 2926 ret = 0; 2927 2928 out: 2929 kfree(data); 2930 return ret; 2931 } 2932 2933 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) 2934 { 2935 int ret; 2936 struct ethtool_tunable tuna; 2937 const struct ethtool_ops *ops = dev->ethtool_ops; 2938 void *data; 2939 2940 if (!ops->set_tunable) 2941 return -EOPNOTSUPP; 2942 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2943 return -EFAULT; 2944 ret = ethtool_tunable_valid(&tuna); 2945 if (ret) 2946 return ret; 2947 useraddr += sizeof(tuna); 2948 data = memdup_user(useraddr, tuna.len); 2949 if (IS_ERR(data)) 2950 return PTR_ERR(data); 2951 ret = ops->set_tunable(dev, &tuna, data); 2952 2953 kfree(data); 2954 return ret; 2955 } 2956 2957 static noinline_for_stack int 2958 ethtool_get_per_queue_coalesce(struct net_device *dev, 2959 void __user *useraddr, 2960 struct ethtool_per_queue_op *per_queue_opt) 2961 { 2962 u32 bit; 2963 int ret; 2964 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2965 2966 if (!dev->ethtool_ops->get_per_queue_coalesce) 2967 return -EOPNOTSUPP; 2968 2969 useraddr += sizeof(*per_queue_opt); 2970 2971 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, 2972 MAX_NUM_QUEUE); 2973 2974 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2975 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2976 2977 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); 2978 if (ret != 0) 2979 return ret; 2980 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2981 return -EFAULT; 2982 useraddr += sizeof(coalesce); 2983 } 2984 2985 return 0; 2986 } 2987 2988 static noinline_for_stack int 2989 ethtool_set_per_queue_coalesce(struct net_device *dev, 2990 void __user *useraddr, 2991 struct ethtool_per_queue_op *per_queue_opt) 2992 { 2993 u32 bit; 2994 int i, ret = 0; 2995 int n_queue; 2996 struct ethtool_coalesce *backup = NULL, *tmp = NULL; 2997 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2998 2999 if ((!dev->ethtool_ops->set_per_queue_coalesce) || 3000 (!dev->ethtool_ops->get_per_queue_coalesce)) 3001 return -EOPNOTSUPP; 3002 3003 useraddr += sizeof(*per_queue_opt); 3004 3005 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); 3006 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); 3007 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); 3008 if (!backup) 3009 return -ENOMEM; 3010 3011 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 3012 struct ethtool_coalesce coalesce; 3013 3014 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); 3015 if (ret != 0) 3016 goto roll_back; 3017 3018 tmp++; 3019 3020 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { 3021 ret = -EFAULT; 3022 goto roll_back; 3023 } 3024 3025 if (!ethtool_set_coalesce_supported(dev, &coalesce)) { 3026 ret = -EOPNOTSUPP; 3027 goto roll_back; 3028 } 3029 3030 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); 3031 if (ret != 0) 3032 goto roll_back; 3033 3034 useraddr += sizeof(coalesce); 3035 } 3036 3037 roll_back: 3038 if (ret != 0) { 3039 tmp = backup; 3040 for_each_set_bit(i, queue_mask, bit) { 3041 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); 3042 tmp++; 3043 } 3044 } 3045 kfree(backup); 3046 3047 return ret; 3048 } 3049 3050 static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, 3051 void __user *useraddr, u32 sub_cmd) 3052 { 3053 struct ethtool_per_queue_op per_queue_opt; 3054 3055 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) 3056 return -EFAULT; 3057 3058 if (per_queue_opt.sub_command != sub_cmd) 3059 return -EINVAL; 3060 3061 switch (per_queue_opt.sub_command) { 3062 case ETHTOOL_GCOALESCE: 3063 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); 3064 case ETHTOOL_SCOALESCE: 3065 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); 3066 default: 3067 return -EOPNOTSUPP; 3068 } 3069 } 3070 3071 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) 3072 { 3073 switch (tuna->id) { 3074 case ETHTOOL_PHY_DOWNSHIFT: 3075 case ETHTOOL_PHY_FAST_LINK_DOWN: 3076 if (tuna->len != sizeof(u8) || 3077 tuna->type_id != ETHTOOL_TUNABLE_U8) 3078 return -EINVAL; 3079 break; 3080 case ETHTOOL_PHY_EDPD: 3081 if (tuna->len != sizeof(u16) || 3082 tuna->type_id != ETHTOOL_TUNABLE_U16) 3083 return -EINVAL; 3084 break; 3085 default: 3086 return -EINVAL; 3087 } 3088 3089 return 0; 3090 } 3091 3092 static int get_phy_tunable(struct net_device *dev, void __user *useraddr) 3093 { 3094 struct phy_device *phydev = dev->phydev; 3095 struct ethtool_tunable tuna; 3096 bool phy_drv_tunable; 3097 void *data; 3098 int ret; 3099 3100 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 3101 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) 3102 return -EOPNOTSUPP; 3103 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 3104 return -EFAULT; 3105 ret = ethtool_phy_tunable_valid(&tuna); 3106 if (ret) 3107 return ret; 3108 data = kzalloc(tuna.len, GFP_USER); 3109 if (!data) 3110 return -ENOMEM; 3111 if (phy_drv_tunable) { 3112 mutex_lock(&phydev->lock); 3113 ret = phydev->drv->get_tunable(phydev, &tuna, data); 3114 mutex_unlock(&phydev->lock); 3115 } else { 3116 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); 3117 } 3118 if (ret) 3119 goto out; 3120 useraddr += sizeof(tuna); 3121 ret = -EFAULT; 3122 if (copy_to_user(useraddr, data, tuna.len)) 3123 goto out; 3124 ret = 0; 3125 3126 out: 3127 kfree(data); 3128 return ret; 3129 } 3130 3131 static int set_phy_tunable(struct net_device *dev, void __user *useraddr) 3132 { 3133 struct phy_device *phydev = dev->phydev; 3134 struct ethtool_tunable tuna; 3135 bool phy_drv_tunable; 3136 void *data; 3137 int ret; 3138 3139 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 3140 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) 3141 return -EOPNOTSUPP; 3142 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 3143 return -EFAULT; 3144 ret = ethtool_phy_tunable_valid(&tuna); 3145 if (ret) 3146 return ret; 3147 useraddr += sizeof(tuna); 3148 data = memdup_user(useraddr, tuna.len); 3149 if (IS_ERR(data)) 3150 return PTR_ERR(data); 3151 if (phy_drv_tunable) { 3152 mutex_lock(&phydev->lock); 3153 ret = phydev->drv->set_tunable(phydev, &tuna, data); 3154 mutex_unlock(&phydev->lock); 3155 } else { 3156 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); 3157 } 3158 3159 kfree(data); 3160 return ret; 3161 } 3162 3163 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) 3164 { 3165 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; 3166 int rc; 3167 3168 if (!dev->ethtool_ops->get_fecparam) 3169 return -EOPNOTSUPP; 3170 3171 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); 3172 if (rc) 3173 return rc; 3174 3175 if (WARN_ON_ONCE(fecparam.reserved)) 3176 fecparam.reserved = 0; 3177 3178 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) 3179 return -EFAULT; 3180 return 0; 3181 } 3182 3183 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) 3184 { 3185 struct ethtool_fecparam fecparam; 3186 3187 if (!dev->ethtool_ops->set_fecparam) 3188 return -EOPNOTSUPP; 3189 3190 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) 3191 return -EFAULT; 3192 3193 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) 3194 return -EINVAL; 3195 3196 fecparam.active_fec = 0; 3197 fecparam.reserved = 0; 3198 3199 return dev->ethtool_ops->set_fecparam(dev, &fecparam); 3200 } 3201 3202 /* The main entry point in this file. Called from net/core/dev_ioctl.c */ 3203 3204 static int 3205 __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, 3206 u32 ethcmd, struct ethtool_devlink_compat *devlink_state) 3207 { 3208 struct net_device *dev; 3209 u32 sub_cmd; 3210 int rc; 3211 netdev_features_t old_features; 3212 3213 dev = __dev_get_by_name(net, ifr->ifr_name); 3214 if (!dev) 3215 return -ENODEV; 3216 3217 if (ethcmd == ETHTOOL_PERQUEUE) { 3218 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) 3219 return -EFAULT; 3220 } else { 3221 sub_cmd = ethcmd; 3222 } 3223 /* Allow some commands to be done by anyone */ 3224 switch (sub_cmd) { 3225 case ETHTOOL_GSET: 3226 case ETHTOOL_GDRVINFO: 3227 case ETHTOOL_GMSGLVL: 3228 case ETHTOOL_GLINK: 3229 case ETHTOOL_GCOALESCE: 3230 case ETHTOOL_GRINGPARAM: 3231 case ETHTOOL_GPAUSEPARAM: 3232 case ETHTOOL_GRXCSUM: 3233 case ETHTOOL_GTXCSUM: 3234 case ETHTOOL_GSG: 3235 case ETHTOOL_GSSET_INFO: 3236 case ETHTOOL_GSTRINGS: 3237 case ETHTOOL_GSTATS: 3238 case ETHTOOL_GPHYSTATS: 3239 case ETHTOOL_GTSO: 3240 case ETHTOOL_GPERMADDR: 3241 case ETHTOOL_GUFO: 3242 case ETHTOOL_GGSO: 3243 case ETHTOOL_GGRO: 3244 case ETHTOOL_GFLAGS: 3245 case ETHTOOL_GPFLAGS: 3246 case ETHTOOL_GRXFH: 3247 case ETHTOOL_GRXRINGS: 3248 case ETHTOOL_GRXCLSRLCNT: 3249 case ETHTOOL_GRXCLSRULE: 3250 case ETHTOOL_GRXCLSRLALL: 3251 case ETHTOOL_GRXFHINDIR: 3252 case ETHTOOL_GRSSH: 3253 case ETHTOOL_GFEATURES: 3254 case ETHTOOL_GCHANNELS: 3255 case ETHTOOL_GET_TS_INFO: 3256 case ETHTOOL_GEEE: 3257 case ETHTOOL_GTUNABLE: 3258 case ETHTOOL_PHY_GTUNABLE: 3259 case ETHTOOL_GLINKSETTINGS: 3260 case ETHTOOL_GFECPARAM: 3261 break; 3262 default: 3263 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 3264 return -EPERM; 3265 } 3266 3267 netdev_lock_ops(dev); 3268 if (dev->dev.parent) 3269 pm_runtime_get_sync(dev->dev.parent); 3270 3271 if (!netif_device_present(dev)) { 3272 rc = -ENODEV; 3273 goto out; 3274 } 3275 3276 if (dev->ethtool_ops->begin) { 3277 rc = dev->ethtool_ops->begin(dev); 3278 if (rc < 0) 3279 goto out; 3280 } 3281 old_features = dev->features; 3282 3283 switch (ethcmd) { 3284 case ETHTOOL_GSET: 3285 rc = ethtool_get_settings(dev, useraddr); 3286 break; 3287 case ETHTOOL_SSET: 3288 rc = ethtool_set_settings(dev, useraddr); 3289 break; 3290 case ETHTOOL_GDRVINFO: 3291 rc = ethtool_get_drvinfo(dev, devlink_state); 3292 break; 3293 case ETHTOOL_GREGS: 3294 rc = ethtool_get_regs(dev, useraddr); 3295 break; 3296 case ETHTOOL_GWOL: 3297 rc = ethtool_get_wol(dev, useraddr); 3298 break; 3299 case ETHTOOL_SWOL: 3300 rc = ethtool_set_wol(dev, useraddr); 3301 break; 3302 case ETHTOOL_GMSGLVL: 3303 rc = ethtool_get_value(dev, useraddr, ethcmd, 3304 dev->ethtool_ops->get_msglevel); 3305 break; 3306 case ETHTOOL_SMSGLVL: 3307 rc = ethtool_set_value_void(dev, useraddr, 3308 dev->ethtool_ops->set_msglevel); 3309 if (!rc) 3310 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF); 3311 break; 3312 case ETHTOOL_GEEE: 3313 rc = ethtool_get_eee(dev, useraddr); 3314 break; 3315 case ETHTOOL_SEEE: 3316 rc = ethtool_set_eee(dev, useraddr); 3317 break; 3318 case ETHTOOL_NWAY_RST: 3319 rc = ethtool_nway_reset(dev); 3320 break; 3321 case ETHTOOL_GLINK: 3322 rc = ethtool_get_link(dev, useraddr); 3323 break; 3324 case ETHTOOL_GEEPROM: 3325 rc = ethtool_get_eeprom(dev, useraddr); 3326 break; 3327 case ETHTOOL_SEEPROM: 3328 rc = ethtool_set_eeprom(dev, useraddr); 3329 break; 3330 case ETHTOOL_GCOALESCE: 3331 rc = ethtool_get_coalesce(dev, useraddr); 3332 break; 3333 case ETHTOOL_SCOALESCE: 3334 rc = ethtool_set_coalesce(dev, useraddr); 3335 break; 3336 case ETHTOOL_GRINGPARAM: 3337 rc = ethtool_get_ringparam(dev, useraddr); 3338 break; 3339 case ETHTOOL_SRINGPARAM: 3340 rc = ethtool_set_ringparam(dev, useraddr); 3341 break; 3342 case ETHTOOL_GPAUSEPARAM: 3343 rc = ethtool_get_pauseparam(dev, useraddr); 3344 break; 3345 case ETHTOOL_SPAUSEPARAM: 3346 rc = ethtool_set_pauseparam(dev, useraddr); 3347 break; 3348 case ETHTOOL_TEST: 3349 rc = ethtool_self_test(dev, useraddr); 3350 break; 3351 case ETHTOOL_GSTRINGS: 3352 rc = ethtool_get_strings(dev, useraddr); 3353 break; 3354 case ETHTOOL_PHYS_ID: 3355 rc = ethtool_phys_id(dev, useraddr); 3356 break; 3357 case ETHTOOL_GSTATS: 3358 rc = ethtool_get_stats(dev, useraddr); 3359 break; 3360 case ETHTOOL_GPERMADDR: 3361 rc = ethtool_get_perm_addr(dev, useraddr); 3362 break; 3363 case ETHTOOL_GFLAGS: 3364 rc = ethtool_get_value(dev, useraddr, ethcmd, 3365 __ethtool_get_flags); 3366 break; 3367 case ETHTOOL_SFLAGS: 3368 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); 3369 break; 3370 case ETHTOOL_GPFLAGS: 3371 rc = ethtool_get_value(dev, useraddr, ethcmd, 3372 dev->ethtool_ops->get_priv_flags); 3373 if (!rc) 3374 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF); 3375 break; 3376 case ETHTOOL_SPFLAGS: 3377 rc = ethtool_set_value(dev, useraddr, 3378 dev->ethtool_ops->set_priv_flags); 3379 break; 3380 case ETHTOOL_GRXFH: 3381 rc = ethtool_get_rxfh_fields(dev, ethcmd, useraddr); 3382 break; 3383 case ETHTOOL_SRXFH: 3384 rc = ethtool_set_rxfh_fields(dev, ethcmd, useraddr); 3385 break; 3386 case ETHTOOL_GRXRINGS: 3387 case ETHTOOL_GRXCLSRLCNT: 3388 case ETHTOOL_GRXCLSRULE: 3389 case ETHTOOL_GRXCLSRLALL: 3390 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); 3391 break; 3392 case ETHTOOL_SRXCLSRLDEL: 3393 case ETHTOOL_SRXCLSRLINS: 3394 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); 3395 break; 3396 case ETHTOOL_FLASHDEV: 3397 rc = ethtool_flash_device(dev, devlink_state); 3398 break; 3399 case ETHTOOL_RESET: 3400 rc = ethtool_reset(dev, useraddr); 3401 break; 3402 case ETHTOOL_GSSET_INFO: 3403 rc = ethtool_get_sset_info(dev, useraddr); 3404 break; 3405 case ETHTOOL_GRXFHINDIR: 3406 rc = ethtool_get_rxfh_indir(dev, useraddr); 3407 break; 3408 case ETHTOOL_SRXFHINDIR: 3409 rc = ethtool_set_rxfh_indir(dev, useraddr); 3410 break; 3411 case ETHTOOL_GRSSH: 3412 rc = ethtool_get_rxfh(dev, useraddr); 3413 break; 3414 case ETHTOOL_SRSSH: 3415 rc = ethtool_set_rxfh(dev, useraddr); 3416 break; 3417 case ETHTOOL_GFEATURES: 3418 rc = ethtool_get_features(dev, useraddr); 3419 break; 3420 case ETHTOOL_SFEATURES: 3421 rc = ethtool_set_features(dev, useraddr); 3422 break; 3423 case ETHTOOL_GTXCSUM: 3424 case ETHTOOL_GRXCSUM: 3425 case ETHTOOL_GSG: 3426 case ETHTOOL_GTSO: 3427 case ETHTOOL_GGSO: 3428 case ETHTOOL_GGRO: 3429 rc = ethtool_get_one_feature(dev, useraddr, ethcmd); 3430 break; 3431 case ETHTOOL_STXCSUM: 3432 case ETHTOOL_SRXCSUM: 3433 case ETHTOOL_SSG: 3434 case ETHTOOL_STSO: 3435 case ETHTOOL_SGSO: 3436 case ETHTOOL_SGRO: 3437 rc = ethtool_set_one_feature(dev, useraddr, ethcmd); 3438 break; 3439 case ETHTOOL_GCHANNELS: 3440 rc = ethtool_get_channels(dev, useraddr); 3441 break; 3442 case ETHTOOL_SCHANNELS: 3443 rc = ethtool_set_channels(dev, useraddr); 3444 break; 3445 case ETHTOOL_SET_DUMP: 3446 rc = ethtool_set_dump(dev, useraddr); 3447 break; 3448 case ETHTOOL_GET_DUMP_FLAG: 3449 rc = ethtool_get_dump_flag(dev, useraddr); 3450 break; 3451 case ETHTOOL_GET_DUMP_DATA: 3452 rc = ethtool_get_dump_data(dev, useraddr); 3453 break; 3454 case ETHTOOL_GET_TS_INFO: 3455 rc = ethtool_get_ts_info(dev, useraddr); 3456 break; 3457 case ETHTOOL_GMODULEINFO: 3458 rc = ethtool_get_module_info(dev, useraddr); 3459 break; 3460 case ETHTOOL_GMODULEEEPROM: 3461 rc = ethtool_get_module_eeprom(dev, useraddr); 3462 break; 3463 case ETHTOOL_GTUNABLE: 3464 rc = ethtool_get_tunable(dev, useraddr); 3465 break; 3466 case ETHTOOL_STUNABLE: 3467 rc = ethtool_set_tunable(dev, useraddr); 3468 break; 3469 case ETHTOOL_GPHYSTATS: 3470 rc = ethtool_get_phy_stats(dev, useraddr); 3471 break; 3472 case ETHTOOL_PERQUEUE: 3473 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); 3474 break; 3475 case ETHTOOL_GLINKSETTINGS: 3476 rc = ethtool_get_link_ksettings(dev, useraddr); 3477 break; 3478 case ETHTOOL_SLINKSETTINGS: 3479 rc = ethtool_set_link_ksettings(dev, useraddr); 3480 break; 3481 case ETHTOOL_PHY_GTUNABLE: 3482 rc = get_phy_tunable(dev, useraddr); 3483 break; 3484 case ETHTOOL_PHY_STUNABLE: 3485 rc = set_phy_tunable(dev, useraddr); 3486 break; 3487 case ETHTOOL_GFECPARAM: 3488 rc = ethtool_get_fecparam(dev, useraddr); 3489 break; 3490 case ETHTOOL_SFECPARAM: 3491 rc = ethtool_set_fecparam(dev, useraddr); 3492 break; 3493 default: 3494 rc = -EOPNOTSUPP; 3495 } 3496 3497 if (dev->ethtool_ops->complete) 3498 dev->ethtool_ops->complete(dev); 3499 3500 if (old_features != dev->features) 3501 netdev_features_change(dev); 3502 out: 3503 if (dev->dev.parent) 3504 pm_runtime_put(dev->dev.parent); 3505 netdev_unlock_ops(dev); 3506 3507 return rc; 3508 } 3509 3510 int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) 3511 { 3512 struct ethtool_devlink_compat *state; 3513 u32 ethcmd; 3514 int rc; 3515 3516 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) 3517 return -EFAULT; 3518 3519 state = kzalloc(sizeof(*state), GFP_KERNEL); 3520 if (!state) 3521 return -ENOMEM; 3522 3523 switch (ethcmd) { 3524 case ETHTOOL_FLASHDEV: 3525 if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { 3526 rc = -EFAULT; 3527 goto exit_free; 3528 } 3529 state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; 3530 break; 3531 } 3532 3533 rtnl_lock(); 3534 rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); 3535 rtnl_unlock(); 3536 if (rc) 3537 goto exit_free; 3538 3539 switch (ethcmd) { 3540 case ETHTOOL_FLASHDEV: 3541 if (state->devlink) 3542 rc = devlink_compat_flash_update(state->devlink, 3543 state->efl.data); 3544 break; 3545 case ETHTOOL_GDRVINFO: 3546 if (state->devlink) 3547 devlink_compat_running_version(state->devlink, 3548 state->info.fw_version, 3549 sizeof(state->info.fw_version)); 3550 if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { 3551 rc = -EFAULT; 3552 goto exit_free; 3553 } 3554 break; 3555 } 3556 3557 exit_free: 3558 if (state->devlink) 3559 devlink_put(state->devlink); 3560 kfree(state); 3561 return rc; 3562 } 3563 3564 struct ethtool_rx_flow_key { 3565 struct flow_dissector_key_basic basic; 3566 union { 3567 struct flow_dissector_key_ipv4_addrs ipv4; 3568 struct flow_dissector_key_ipv6_addrs ipv6; 3569 }; 3570 struct flow_dissector_key_ports tp; 3571 struct flow_dissector_key_ip ip; 3572 struct flow_dissector_key_vlan vlan; 3573 struct flow_dissector_key_eth_addrs eth_addrs; 3574 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ 3575 3576 struct ethtool_rx_flow_match { 3577 struct flow_dissector dissector; 3578 struct ethtool_rx_flow_key key; 3579 struct ethtool_rx_flow_key mask; 3580 }; 3581 3582 struct ethtool_rx_flow_rule * 3583 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) 3584 { 3585 const struct ethtool_rx_flow_spec *fs = input->fs; 3586 struct ethtool_rx_flow_match *match; 3587 struct ethtool_rx_flow_rule *flow; 3588 struct flow_action_entry *act; 3589 3590 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + 3591 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); 3592 if (!flow) 3593 return ERR_PTR(-ENOMEM); 3594 3595 /* ethtool_rx supports only one single action per rule. */ 3596 flow->rule = flow_rule_alloc(1); 3597 if (!flow->rule) { 3598 kfree(flow); 3599 return ERR_PTR(-ENOMEM); 3600 } 3601 3602 match = (struct ethtool_rx_flow_match *)flow->priv; 3603 flow->rule->match.dissector = &match->dissector; 3604 flow->rule->match.mask = &match->mask; 3605 flow->rule->match.key = &match->key; 3606 3607 match->mask.basic.n_proto = htons(0xffff); 3608 3609 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3610 case ETHER_FLOW: { 3611 const struct ethhdr *ether_spec, *ether_m_spec; 3612 3613 ether_spec = &fs->h_u.ether_spec; 3614 ether_m_spec = &fs->m_u.ether_spec; 3615 3616 if (!is_zero_ether_addr(ether_m_spec->h_source)) { 3617 ether_addr_copy(match->key.eth_addrs.src, 3618 ether_spec->h_source); 3619 ether_addr_copy(match->mask.eth_addrs.src, 3620 ether_m_spec->h_source); 3621 } 3622 if (!is_zero_ether_addr(ether_m_spec->h_dest)) { 3623 ether_addr_copy(match->key.eth_addrs.dst, 3624 ether_spec->h_dest); 3625 ether_addr_copy(match->mask.eth_addrs.dst, 3626 ether_m_spec->h_dest); 3627 } 3628 if (ether_m_spec->h_proto) { 3629 match->key.basic.n_proto = ether_spec->h_proto; 3630 match->mask.basic.n_proto = ether_m_spec->h_proto; 3631 } 3632 } 3633 break; 3634 case TCP_V4_FLOW: 3635 case UDP_V4_FLOW: { 3636 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; 3637 3638 match->key.basic.n_proto = htons(ETH_P_IP); 3639 3640 v4_spec = &fs->h_u.tcp_ip4_spec; 3641 v4_m_spec = &fs->m_u.tcp_ip4_spec; 3642 3643 if (v4_m_spec->ip4src) { 3644 match->key.ipv4.src = v4_spec->ip4src; 3645 match->mask.ipv4.src = v4_m_spec->ip4src; 3646 } 3647 if (v4_m_spec->ip4dst) { 3648 match->key.ipv4.dst = v4_spec->ip4dst; 3649 match->mask.ipv4.dst = v4_m_spec->ip4dst; 3650 } 3651 if (v4_m_spec->ip4src || 3652 v4_m_spec->ip4dst) { 3653 match->dissector.used_keys |= 3654 BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS); 3655 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = 3656 offsetof(struct ethtool_rx_flow_key, ipv4); 3657 } 3658 if (v4_m_spec->psrc) { 3659 match->key.tp.src = v4_spec->psrc; 3660 match->mask.tp.src = v4_m_spec->psrc; 3661 } 3662 if (v4_m_spec->pdst) { 3663 match->key.tp.dst = v4_spec->pdst; 3664 match->mask.tp.dst = v4_m_spec->pdst; 3665 } 3666 if (v4_m_spec->psrc || 3667 v4_m_spec->pdst) { 3668 match->dissector.used_keys |= 3669 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3670 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3671 offsetof(struct ethtool_rx_flow_key, tp); 3672 } 3673 if (v4_m_spec->tos) { 3674 match->key.ip.tos = v4_spec->tos; 3675 match->mask.ip.tos = v4_m_spec->tos; 3676 match->dissector.used_keys |= 3677 BIT(FLOW_DISSECTOR_KEY_IP); 3678 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3679 offsetof(struct ethtool_rx_flow_key, ip); 3680 } 3681 } 3682 break; 3683 case TCP_V6_FLOW: 3684 case UDP_V6_FLOW: { 3685 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; 3686 3687 match->key.basic.n_proto = htons(ETH_P_IPV6); 3688 3689 v6_spec = &fs->h_u.tcp_ip6_spec; 3690 v6_m_spec = &fs->m_u.tcp_ip6_spec; 3691 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) { 3692 memcpy(&match->key.ipv6.src, v6_spec->ip6src, 3693 sizeof(match->key.ipv6.src)); 3694 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, 3695 sizeof(match->mask.ipv6.src)); 3696 } 3697 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3698 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, 3699 sizeof(match->key.ipv6.dst)); 3700 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, 3701 sizeof(match->mask.ipv6.dst)); 3702 } 3703 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) || 3704 !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3705 match->dissector.used_keys |= 3706 BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS); 3707 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = 3708 offsetof(struct ethtool_rx_flow_key, ipv6); 3709 } 3710 if (v6_m_spec->psrc) { 3711 match->key.tp.src = v6_spec->psrc; 3712 match->mask.tp.src = v6_m_spec->psrc; 3713 } 3714 if (v6_m_spec->pdst) { 3715 match->key.tp.dst = v6_spec->pdst; 3716 match->mask.tp.dst = v6_m_spec->pdst; 3717 } 3718 if (v6_m_spec->psrc || 3719 v6_m_spec->pdst) { 3720 match->dissector.used_keys |= 3721 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3722 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3723 offsetof(struct ethtool_rx_flow_key, tp); 3724 } 3725 if (v6_m_spec->tclass) { 3726 match->key.ip.tos = v6_spec->tclass; 3727 match->mask.ip.tos = v6_m_spec->tclass; 3728 match->dissector.used_keys |= 3729 BIT_ULL(FLOW_DISSECTOR_KEY_IP); 3730 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3731 offsetof(struct ethtool_rx_flow_key, ip); 3732 } 3733 } 3734 break; 3735 default: 3736 ethtool_rx_flow_rule_destroy(flow); 3737 return ERR_PTR(-EINVAL); 3738 } 3739 3740 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3741 case TCP_V4_FLOW: 3742 case TCP_V6_FLOW: 3743 match->key.basic.ip_proto = IPPROTO_TCP; 3744 match->mask.basic.ip_proto = 0xff; 3745 break; 3746 case UDP_V4_FLOW: 3747 case UDP_V6_FLOW: 3748 match->key.basic.ip_proto = IPPROTO_UDP; 3749 match->mask.basic.ip_proto = 0xff; 3750 break; 3751 } 3752 3753 match->dissector.used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_BASIC); 3754 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = 3755 offsetof(struct ethtool_rx_flow_key, basic); 3756 3757 if (fs->flow_type & FLOW_EXT) { 3758 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3759 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3760 3761 if (ext_m_spec->vlan_etype) { 3762 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; 3763 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; 3764 } 3765 3766 if (ext_m_spec->vlan_tci) { 3767 match->key.vlan.vlan_id = 3768 ntohs(ext_h_spec->vlan_tci) & 0x0fff; 3769 match->mask.vlan.vlan_id = 3770 ntohs(ext_m_spec->vlan_tci) & 0x0fff; 3771 3772 match->key.vlan.vlan_dei = 3773 !!(ext_h_spec->vlan_tci & htons(0x1000)); 3774 match->mask.vlan.vlan_dei = 3775 !!(ext_m_spec->vlan_tci & htons(0x1000)); 3776 3777 match->key.vlan.vlan_priority = 3778 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; 3779 match->mask.vlan.vlan_priority = 3780 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; 3781 } 3782 3783 if (ext_m_spec->vlan_etype || 3784 ext_m_spec->vlan_tci) { 3785 match->dissector.used_keys |= 3786 BIT_ULL(FLOW_DISSECTOR_KEY_VLAN); 3787 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = 3788 offsetof(struct ethtool_rx_flow_key, vlan); 3789 } 3790 } 3791 if (fs->flow_type & FLOW_MAC_EXT) { 3792 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3793 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3794 3795 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, 3796 ETH_ALEN); 3797 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, 3798 ETH_ALEN); 3799 3800 match->dissector.used_keys |= 3801 BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS); 3802 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = 3803 offsetof(struct ethtool_rx_flow_key, eth_addrs); 3804 } 3805 3806 act = &flow->rule->action.entries[0]; 3807 switch (fs->ring_cookie) { 3808 case RX_CLS_FLOW_DISC: 3809 act->id = FLOW_ACTION_DROP; 3810 break; 3811 case RX_CLS_FLOW_WAKE: 3812 act->id = FLOW_ACTION_WAKE; 3813 break; 3814 default: 3815 act->id = FLOW_ACTION_QUEUE; 3816 if (fs->flow_type & FLOW_RSS) 3817 act->queue.ctx = input->rss_ctx; 3818 3819 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); 3820 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); 3821 break; 3822 } 3823 3824 return flow; 3825 } 3826 EXPORT_SYMBOL(ethtool_rx_flow_rule_create); 3827 3828 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) 3829 { 3830 kfree(flow->rule); 3831 kfree(flow); 3832 } 3833 EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); 3834