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