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_SYM_XOR) && 1310 !ops->cap_rss_sym_xor_supported) 1311 return -EOPNOTSUPP; 1312 1313 /* If either indir, hash key or function is valid, proceed further. 1314 * Must request at least one change: indir size, hash key, function 1315 * or input transformation. 1316 */ 1317 if ((rxfh.indir_size && 1318 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && 1319 rxfh.indir_size != dev_indir_size) || 1320 (rxfh.key_size && (rxfh.key_size != dev_key_size)) || 1321 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && 1322 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE && 1323 rxfh.input_xfrm == RXH_XFRM_NO_CHANGE)) 1324 return -EINVAL; 1325 1326 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1327 indir_bytes = dev_indir_size * sizeof(rxfh_dev.indir[0]); 1328 1329 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER); 1330 if (!rss_config) 1331 return -ENOMEM; 1332 1333 rx_rings.cmd = ETHTOOL_GRXRINGS; 1334 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1335 if (ret) 1336 goto out; 1337 1338 /* rxfh.indir_size == 0 means reset the indir table to default (master 1339 * context) or delete the context (other RSS contexts). 1340 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. 1341 */ 1342 if (rxfh.indir_size && 1343 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { 1344 rxfh_dev.indir = (u32 *)rss_config; 1345 rxfh_dev.indir_size = dev_indir_size; 1346 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1347 useraddr + rss_cfg_offset, 1348 &rx_rings, 1349 rxfh.indir_size); 1350 if (ret) 1351 goto out; 1352 } else if (rxfh.indir_size == 0) { 1353 if (rxfh.rss_context == 0) { 1354 u32 *indir; 1355 1356 rxfh_dev.indir = (u32 *)rss_config; 1357 rxfh_dev.indir_size = dev_indir_size; 1358 indir = rxfh_dev.indir; 1359 for (i = 0; i < dev_indir_size; i++) 1360 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1361 } else { 1362 rxfh_dev.rss_delete = true; 1363 } 1364 } 1365 1366 if (rxfh.key_size) { 1367 rxfh_dev.key_size = dev_key_size; 1368 rxfh_dev.key = rss_config + indir_bytes; 1369 if (copy_from_user(rxfh_dev.key, 1370 useraddr + rss_cfg_offset + indir_bytes, 1371 rxfh.key_size)) { 1372 ret = -EFAULT; 1373 goto out; 1374 } 1375 } 1376 1377 rxfh_dev.hfunc = rxfh.hfunc; 1378 rxfh_dev.rss_context = rxfh.rss_context; 1379 rxfh_dev.input_xfrm = rxfh.input_xfrm; 1380 1381 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1382 if (ret) 1383 goto out; 1384 1385 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), 1386 &rxfh_dev.rss_context, sizeof(rxfh_dev.rss_context))) 1387 ret = -EFAULT; 1388 1389 if (!rxfh_dev.rss_context) { 1390 /* indicate whether rxfh was set to default */ 1391 if (rxfh.indir_size == 0) 1392 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1393 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1394 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1395 } 1396 1397 out: 1398 kfree(rss_config); 1399 return ret; 1400 } 1401 1402 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) 1403 { 1404 struct ethtool_regs regs; 1405 const struct ethtool_ops *ops = dev->ethtool_ops; 1406 void *regbuf; 1407 int reglen, ret; 1408 1409 if (!ops->get_regs || !ops->get_regs_len) 1410 return -EOPNOTSUPP; 1411 1412 if (copy_from_user(®s, useraddr, sizeof(regs))) 1413 return -EFAULT; 1414 1415 reglen = ops->get_regs_len(dev); 1416 if (reglen <= 0) 1417 return reglen; 1418 1419 if (regs.len > reglen) 1420 regs.len = reglen; 1421 1422 regbuf = vzalloc(reglen); 1423 if (!regbuf) 1424 return -ENOMEM; 1425 1426 if (regs.len < reglen) 1427 reglen = regs.len; 1428 1429 ops->get_regs(dev, ®s, regbuf); 1430 1431 ret = -EFAULT; 1432 if (copy_to_user(useraddr, ®s, sizeof(regs))) 1433 goto out; 1434 useraddr += offsetof(struct ethtool_regs, data); 1435 if (copy_to_user(useraddr, regbuf, reglen)) 1436 goto out; 1437 ret = 0; 1438 1439 out: 1440 vfree(regbuf); 1441 return ret; 1442 } 1443 1444 static int ethtool_reset(struct net_device *dev, char __user *useraddr) 1445 { 1446 struct ethtool_value reset; 1447 int ret; 1448 1449 if (!dev->ethtool_ops->reset) 1450 return -EOPNOTSUPP; 1451 1452 if (copy_from_user(&reset, useraddr, sizeof(reset))) 1453 return -EFAULT; 1454 1455 ret = dev->ethtool_ops->reset(dev, &reset.data); 1456 if (ret) 1457 return ret; 1458 1459 if (copy_to_user(useraddr, &reset, sizeof(reset))) 1460 return -EFAULT; 1461 return 0; 1462 } 1463 1464 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) 1465 { 1466 struct ethtool_wolinfo wol; 1467 1468 if (!dev->ethtool_ops->get_wol) 1469 return -EOPNOTSUPP; 1470 1471 memset(&wol, 0, sizeof(struct ethtool_wolinfo)); 1472 wol.cmd = ETHTOOL_GWOL; 1473 dev->ethtool_ops->get_wol(dev, &wol); 1474 1475 if (copy_to_user(useraddr, &wol, sizeof(wol))) 1476 return -EFAULT; 1477 return 0; 1478 } 1479 1480 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) 1481 { 1482 struct ethtool_wolinfo wol, cur_wol; 1483 int ret; 1484 1485 if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol) 1486 return -EOPNOTSUPP; 1487 1488 memset(&cur_wol, 0, sizeof(struct ethtool_wolinfo)); 1489 cur_wol.cmd = ETHTOOL_GWOL; 1490 dev->ethtool_ops->get_wol(dev, &cur_wol); 1491 1492 if (copy_from_user(&wol, useraddr, sizeof(wol))) 1493 return -EFAULT; 1494 1495 if (wol.wolopts & ~cur_wol.supported) 1496 return -EINVAL; 1497 1498 if (wol.wolopts == cur_wol.wolopts && 1499 !memcmp(wol.sopass, cur_wol.sopass, sizeof(wol.sopass))) 1500 return 0; 1501 1502 ret = dev->ethtool_ops->set_wol(dev, &wol); 1503 if (ret) 1504 return ret; 1505 1506 dev->wol_enabled = !!wol.wolopts; 1507 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL); 1508 1509 return 0; 1510 } 1511 1512 static void eee_to_keee(struct ethtool_keee *keee, 1513 const struct ethtool_eee *eee) 1514 { 1515 memset(keee, 0, sizeof(*keee)); 1516 1517 keee->eee_active = eee->eee_active; 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->supported, 1523 eee->supported); 1524 ethtool_convert_legacy_u32_to_link_mode(keee->advertised, 1525 eee->advertised); 1526 ethtool_convert_legacy_u32_to_link_mode(keee->lp_advertised, 1527 eee->lp_advertised); 1528 } 1529 1530 static void keee_to_eee(struct ethtool_eee *eee, 1531 const struct ethtool_keee *keee) 1532 { 1533 bool overflow; 1534 1535 memset(eee, 0, sizeof(*eee)); 1536 1537 eee->eee_active = keee->eee_active; 1538 eee->eee_enabled = keee->eee_enabled; 1539 eee->tx_lpi_enabled = keee->tx_lpi_enabled; 1540 eee->tx_lpi_timer = keee->tx_lpi_timer; 1541 1542 overflow = !ethtool_convert_link_mode_to_legacy_u32(&eee->supported, 1543 keee->supported); 1544 ethtool_convert_link_mode_to_legacy_u32(&eee->advertised, 1545 keee->advertised); 1546 ethtool_convert_link_mode_to_legacy_u32(&eee->lp_advertised, 1547 keee->lp_advertised); 1548 if (overflow) 1549 pr_warn("Ethtool ioctl interface doesn't support passing EEE linkmodes beyond bit 32\n"); 1550 } 1551 1552 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) 1553 { 1554 struct ethtool_keee keee; 1555 struct ethtool_eee eee; 1556 int rc; 1557 1558 if (!dev->ethtool_ops->get_eee) 1559 return -EOPNOTSUPP; 1560 1561 memset(&keee, 0, sizeof(keee)); 1562 rc = dev->ethtool_ops->get_eee(dev, &keee); 1563 if (rc) 1564 return rc; 1565 1566 keee_to_eee(&eee, &keee); 1567 if (copy_to_user(useraddr, &eee, sizeof(eee))) 1568 return -EFAULT; 1569 1570 return 0; 1571 } 1572 1573 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) 1574 { 1575 struct ethtool_keee keee; 1576 struct ethtool_eee eee; 1577 int ret; 1578 1579 if (!dev->ethtool_ops->set_eee) 1580 return -EOPNOTSUPP; 1581 1582 if (copy_from_user(&eee, useraddr, sizeof(eee))) 1583 return -EFAULT; 1584 1585 eee_to_keee(&keee, &eee); 1586 ret = dev->ethtool_ops->set_eee(dev, &keee); 1587 if (!ret) 1588 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL); 1589 return ret; 1590 } 1591 1592 static int ethtool_nway_reset(struct net_device *dev) 1593 { 1594 if (!dev->ethtool_ops->nway_reset) 1595 return -EOPNOTSUPP; 1596 1597 return dev->ethtool_ops->nway_reset(dev); 1598 } 1599 1600 static int ethtool_get_link(struct net_device *dev, char __user *useraddr) 1601 { 1602 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; 1603 int link = __ethtool_get_link(dev); 1604 1605 if (link < 0) 1606 return link; 1607 1608 edata.data = link; 1609 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1610 return -EFAULT; 1611 return 0; 1612 } 1613 1614 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, 1615 int (*getter)(struct net_device *, 1616 struct ethtool_eeprom *, u8 *), 1617 u32 total_len) 1618 { 1619 struct ethtool_eeprom eeprom; 1620 void __user *userbuf = useraddr + sizeof(eeprom); 1621 u32 bytes_remaining; 1622 u8 *data; 1623 int ret = 0; 1624 1625 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1626 return -EFAULT; 1627 1628 /* Check for wrap and zero */ 1629 if (eeprom.offset + eeprom.len <= eeprom.offset) 1630 return -EINVAL; 1631 1632 /* Check for exceeding total eeprom len */ 1633 if (eeprom.offset + eeprom.len > total_len) 1634 return -EINVAL; 1635 1636 data = kzalloc(PAGE_SIZE, GFP_USER); 1637 if (!data) 1638 return -ENOMEM; 1639 1640 bytes_remaining = eeprom.len; 1641 while (bytes_remaining > 0) { 1642 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1643 1644 ret = getter(dev, &eeprom, data); 1645 if (ret) 1646 break; 1647 if (!eeprom.len) { 1648 ret = -EIO; 1649 break; 1650 } 1651 if (copy_to_user(userbuf, data, eeprom.len)) { 1652 ret = -EFAULT; 1653 break; 1654 } 1655 userbuf += eeprom.len; 1656 eeprom.offset += eeprom.len; 1657 bytes_remaining -= eeprom.len; 1658 } 1659 1660 eeprom.len = userbuf - (useraddr + sizeof(eeprom)); 1661 eeprom.offset -= eeprom.len; 1662 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) 1663 ret = -EFAULT; 1664 1665 kfree(data); 1666 return ret; 1667 } 1668 1669 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) 1670 { 1671 const struct ethtool_ops *ops = dev->ethtool_ops; 1672 1673 if (!ops->get_eeprom || !ops->get_eeprom_len || 1674 !ops->get_eeprom_len(dev)) 1675 return -EOPNOTSUPP; 1676 1677 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, 1678 ops->get_eeprom_len(dev)); 1679 } 1680 1681 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) 1682 { 1683 struct ethtool_eeprom eeprom; 1684 const struct ethtool_ops *ops = dev->ethtool_ops; 1685 void __user *userbuf = useraddr + sizeof(eeprom); 1686 u32 bytes_remaining; 1687 u8 *data; 1688 int ret = 0; 1689 1690 if (!ops->set_eeprom || !ops->get_eeprom_len || 1691 !ops->get_eeprom_len(dev)) 1692 return -EOPNOTSUPP; 1693 1694 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1695 return -EFAULT; 1696 1697 /* Check for wrap and zero */ 1698 if (eeprom.offset + eeprom.len <= eeprom.offset) 1699 return -EINVAL; 1700 1701 /* Check for exceeding total eeprom len */ 1702 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) 1703 return -EINVAL; 1704 1705 data = kzalloc(PAGE_SIZE, GFP_USER); 1706 if (!data) 1707 return -ENOMEM; 1708 1709 bytes_remaining = eeprom.len; 1710 while (bytes_remaining > 0) { 1711 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1712 1713 if (copy_from_user(data, userbuf, eeprom.len)) { 1714 ret = -EFAULT; 1715 break; 1716 } 1717 ret = ops->set_eeprom(dev, &eeprom, data); 1718 if (ret) 1719 break; 1720 userbuf += eeprom.len; 1721 eeprom.offset += eeprom.len; 1722 bytes_remaining -= eeprom.len; 1723 } 1724 1725 kfree(data); 1726 return ret; 1727 } 1728 1729 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, 1730 void __user *useraddr) 1731 { 1732 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 1733 struct kernel_ethtool_coalesce kernel_coalesce = {}; 1734 int ret; 1735 1736 if (!dev->ethtool_ops->get_coalesce) 1737 return -EOPNOTSUPP; 1738 1739 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 1740 NULL); 1741 if (ret) 1742 return ret; 1743 1744 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 1745 return -EFAULT; 1746 return 0; 1747 } 1748 1749 static bool 1750 ethtool_set_coalesce_supported(struct net_device *dev, 1751 struct ethtool_coalesce *coalesce) 1752 { 1753 u32 supported_params = dev->ethtool_ops->supported_coalesce_params; 1754 u32 nonzero_params = 0; 1755 1756 if (coalesce->rx_coalesce_usecs) 1757 nonzero_params |= ETHTOOL_COALESCE_RX_USECS; 1758 if (coalesce->rx_max_coalesced_frames) 1759 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; 1760 if (coalesce->rx_coalesce_usecs_irq) 1761 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; 1762 if (coalesce->rx_max_coalesced_frames_irq) 1763 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; 1764 if (coalesce->tx_coalesce_usecs) 1765 nonzero_params |= ETHTOOL_COALESCE_TX_USECS; 1766 if (coalesce->tx_max_coalesced_frames) 1767 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; 1768 if (coalesce->tx_coalesce_usecs_irq) 1769 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; 1770 if (coalesce->tx_max_coalesced_frames_irq) 1771 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; 1772 if (coalesce->stats_block_coalesce_usecs) 1773 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; 1774 if (coalesce->use_adaptive_rx_coalesce) 1775 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; 1776 if (coalesce->use_adaptive_tx_coalesce) 1777 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; 1778 if (coalesce->pkt_rate_low) 1779 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; 1780 if (coalesce->rx_coalesce_usecs_low) 1781 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; 1782 if (coalesce->rx_max_coalesced_frames_low) 1783 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; 1784 if (coalesce->tx_coalesce_usecs_low) 1785 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; 1786 if (coalesce->tx_max_coalesced_frames_low) 1787 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; 1788 if (coalesce->pkt_rate_high) 1789 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; 1790 if (coalesce->rx_coalesce_usecs_high) 1791 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; 1792 if (coalesce->rx_max_coalesced_frames_high) 1793 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; 1794 if (coalesce->tx_coalesce_usecs_high) 1795 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; 1796 if (coalesce->tx_max_coalesced_frames_high) 1797 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; 1798 if (coalesce->rate_sample_interval) 1799 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; 1800 1801 return (supported_params & nonzero_params) == nonzero_params; 1802 } 1803 1804 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, 1805 void __user *useraddr) 1806 { 1807 struct kernel_ethtool_coalesce kernel_coalesce = {}; 1808 struct ethtool_coalesce coalesce; 1809 int ret; 1810 1811 if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce) 1812 return -EOPNOTSUPP; 1813 1814 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 1815 NULL); 1816 if (ret) 1817 return ret; 1818 1819 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) 1820 return -EFAULT; 1821 1822 if (!ethtool_set_coalesce_supported(dev, &coalesce)) 1823 return -EOPNOTSUPP; 1824 1825 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, 1826 NULL); 1827 if (!ret) 1828 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL); 1829 return ret; 1830 } 1831 1832 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) 1833 { 1834 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; 1835 struct kernel_ethtool_ringparam kernel_ringparam = {}; 1836 1837 if (!dev->ethtool_ops->get_ringparam) 1838 return -EOPNOTSUPP; 1839 1840 dev->ethtool_ops->get_ringparam(dev, &ringparam, 1841 &kernel_ringparam, NULL); 1842 1843 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) 1844 return -EFAULT; 1845 return 0; 1846 } 1847 1848 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) 1849 { 1850 struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM }; 1851 struct kernel_ethtool_ringparam kernel_ringparam; 1852 int ret; 1853 1854 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) 1855 return -EOPNOTSUPP; 1856 1857 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) 1858 return -EFAULT; 1859 1860 dev->ethtool_ops->get_ringparam(dev, &max, &kernel_ringparam, NULL); 1861 1862 /* ensure new ring parameters are within the maximums */ 1863 if (ringparam.rx_pending > max.rx_max_pending || 1864 ringparam.rx_mini_pending > max.rx_mini_max_pending || 1865 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || 1866 ringparam.tx_pending > max.tx_max_pending) 1867 return -EINVAL; 1868 1869 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, 1870 &kernel_ringparam, NULL); 1871 if (!ret) 1872 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL); 1873 return ret; 1874 } 1875 1876 static noinline_for_stack int ethtool_get_channels(struct net_device *dev, 1877 void __user *useraddr) 1878 { 1879 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; 1880 1881 if (!dev->ethtool_ops->get_channels) 1882 return -EOPNOTSUPP; 1883 1884 dev->ethtool_ops->get_channels(dev, &channels); 1885 1886 if (copy_to_user(useraddr, &channels, sizeof(channels))) 1887 return -EFAULT; 1888 return 0; 1889 } 1890 1891 static noinline_for_stack int ethtool_set_channels(struct net_device *dev, 1892 void __user *useraddr) 1893 { 1894 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; 1895 u16 from_channel, to_channel; 1896 u64 max_rxnfc_in_use; 1897 u32 max_rxfh_in_use; 1898 unsigned int i; 1899 int ret; 1900 1901 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) 1902 return -EOPNOTSUPP; 1903 1904 if (copy_from_user(&channels, useraddr, sizeof(channels))) 1905 return -EFAULT; 1906 1907 dev->ethtool_ops->get_channels(dev, &curr); 1908 1909 if (channels.rx_count == curr.rx_count && 1910 channels.tx_count == curr.tx_count && 1911 channels.combined_count == curr.combined_count && 1912 channels.other_count == curr.other_count) 1913 return 0; 1914 1915 /* ensure new counts are within the maximums */ 1916 if (channels.rx_count > curr.max_rx || 1917 channels.tx_count > curr.max_tx || 1918 channels.combined_count > curr.max_combined || 1919 channels.other_count > curr.max_other) 1920 return -EINVAL; 1921 1922 /* ensure there is at least one RX and one TX channel */ 1923 if (!channels.combined_count && 1924 (!channels.rx_count || !channels.tx_count)) 1925 return -EINVAL; 1926 1927 /* ensure the new Rx count fits within the configured Rx flow 1928 * indirection table/rxnfc settings */ 1929 if (ethtool_get_max_rxnfc_channel(dev, &max_rxnfc_in_use)) 1930 max_rxnfc_in_use = 0; 1931 if (!netif_is_rxfh_configured(dev) || 1932 ethtool_get_max_rxfh_channel(dev, &max_rxfh_in_use)) 1933 max_rxfh_in_use = 0; 1934 if (channels.combined_count + channels.rx_count <= 1935 max_t(u64, max_rxnfc_in_use, max_rxfh_in_use)) 1936 return -EINVAL; 1937 1938 /* Disabling channels, query zero-copy AF_XDP sockets */ 1939 from_channel = channels.combined_count + 1940 min(channels.rx_count, channels.tx_count); 1941 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); 1942 for (i = from_channel; i < to_channel; i++) 1943 if (xsk_get_pool_from_qid(dev, i)) 1944 return -EINVAL; 1945 1946 ret = dev->ethtool_ops->set_channels(dev, &channels); 1947 if (!ret) 1948 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL); 1949 return ret; 1950 } 1951 1952 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) 1953 { 1954 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; 1955 1956 if (!dev->ethtool_ops->get_pauseparam) 1957 return -EOPNOTSUPP; 1958 1959 dev->ethtool_ops->get_pauseparam(dev, &pauseparam); 1960 1961 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) 1962 return -EFAULT; 1963 return 0; 1964 } 1965 1966 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) 1967 { 1968 struct ethtool_pauseparam pauseparam; 1969 int ret; 1970 1971 if (!dev->ethtool_ops->set_pauseparam) 1972 return -EOPNOTSUPP; 1973 1974 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) 1975 return -EFAULT; 1976 1977 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); 1978 if (!ret) 1979 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL); 1980 return ret; 1981 } 1982 1983 static int ethtool_self_test(struct net_device *dev, char __user *useraddr) 1984 { 1985 struct ethtool_test test; 1986 const struct ethtool_ops *ops = dev->ethtool_ops; 1987 u64 *data; 1988 int ret, test_len; 1989 1990 if (!ops->self_test || !ops->get_sset_count) 1991 return -EOPNOTSUPP; 1992 1993 test_len = ops->get_sset_count(dev, ETH_SS_TEST); 1994 if (test_len < 0) 1995 return test_len; 1996 WARN_ON(test_len == 0); 1997 1998 if (copy_from_user(&test, useraddr, sizeof(test))) 1999 return -EFAULT; 2000 2001 test.len = test_len; 2002 data = kcalloc(test_len, sizeof(u64), GFP_USER); 2003 if (!data) 2004 return -ENOMEM; 2005 2006 netif_testing_on(dev); 2007 ops->self_test(dev, &test, data); 2008 netif_testing_off(dev); 2009 2010 ret = -EFAULT; 2011 if (copy_to_user(useraddr, &test, sizeof(test))) 2012 goto out; 2013 useraddr += sizeof(test); 2014 if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) 2015 goto out; 2016 ret = 0; 2017 2018 out: 2019 kfree(data); 2020 return ret; 2021 } 2022 2023 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) 2024 { 2025 struct ethtool_gstrings gstrings; 2026 u8 *data; 2027 int ret; 2028 2029 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) 2030 return -EFAULT; 2031 2032 ret = __ethtool_get_sset_count(dev, gstrings.string_set); 2033 if (ret < 0) 2034 return ret; 2035 if (ret > S32_MAX / ETH_GSTRING_LEN) 2036 return -ENOMEM; 2037 WARN_ON_ONCE(!ret); 2038 2039 gstrings.len = ret; 2040 2041 if (gstrings.len) { 2042 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); 2043 if (!data) 2044 return -ENOMEM; 2045 2046 __ethtool_get_strings(dev, gstrings.string_set, data); 2047 } else { 2048 data = NULL; 2049 } 2050 2051 ret = -EFAULT; 2052 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) 2053 goto out; 2054 useraddr += sizeof(gstrings); 2055 if (gstrings.len && 2056 copy_to_user(useraddr, data, 2057 array_size(gstrings.len, ETH_GSTRING_LEN))) 2058 goto out; 2059 ret = 0; 2060 2061 out: 2062 vfree(data); 2063 return ret; 2064 } 2065 2066 __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) 2067 { 2068 va_list args; 2069 2070 va_start(args, fmt); 2071 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); 2072 va_end(args); 2073 2074 *data += ETH_GSTRING_LEN; 2075 } 2076 EXPORT_SYMBOL(ethtool_sprintf); 2077 2078 void ethtool_puts(u8 **data, const char *str) 2079 { 2080 strscpy(*data, str, ETH_GSTRING_LEN); 2081 *data += ETH_GSTRING_LEN; 2082 } 2083 EXPORT_SYMBOL(ethtool_puts); 2084 2085 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) 2086 { 2087 struct ethtool_value id; 2088 static bool busy; 2089 const struct ethtool_ops *ops = dev->ethtool_ops; 2090 netdevice_tracker dev_tracker; 2091 int rc; 2092 2093 if (!ops->set_phys_id) 2094 return -EOPNOTSUPP; 2095 2096 if (busy) 2097 return -EBUSY; 2098 2099 if (copy_from_user(&id, useraddr, sizeof(id))) 2100 return -EFAULT; 2101 2102 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); 2103 if (rc < 0) 2104 return rc; 2105 2106 /* Drop the RTNL lock while waiting, but prevent reentry or 2107 * removal of the device. 2108 */ 2109 busy = true; 2110 netdev_hold(dev, &dev_tracker, GFP_KERNEL); 2111 rtnl_unlock(); 2112 2113 if (rc == 0) { 2114 /* Driver will handle this itself */ 2115 schedule_timeout_interruptible( 2116 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); 2117 } else { 2118 /* Driver expects to be called at twice the frequency in rc */ 2119 int n = rc * 2, interval = HZ / n; 2120 u64 count = mul_u32_u32(n, id.data); 2121 u64 i = 0; 2122 2123 do { 2124 rtnl_lock(); 2125 rc = ops->set_phys_id(dev, 2126 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); 2127 rtnl_unlock(); 2128 if (rc) 2129 break; 2130 schedule_timeout_interruptible(interval); 2131 } while (!signal_pending(current) && (!id.data || i < count)); 2132 } 2133 2134 rtnl_lock(); 2135 netdev_put(dev, &dev_tracker); 2136 busy = false; 2137 2138 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); 2139 return rc; 2140 } 2141 2142 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) 2143 { 2144 struct ethtool_stats stats; 2145 const struct ethtool_ops *ops = dev->ethtool_ops; 2146 u64 *data; 2147 int ret, n_stats; 2148 2149 if (!ops->get_ethtool_stats || !ops->get_sset_count) 2150 return -EOPNOTSUPP; 2151 2152 n_stats = ops->get_sset_count(dev, ETH_SS_STATS); 2153 if (n_stats < 0) 2154 return n_stats; 2155 if (n_stats > S32_MAX / sizeof(u64)) 2156 return -ENOMEM; 2157 WARN_ON_ONCE(!n_stats); 2158 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2159 return -EFAULT; 2160 2161 stats.n_stats = n_stats; 2162 2163 if (n_stats) { 2164 data = vzalloc(array_size(n_stats, sizeof(u64))); 2165 if (!data) 2166 return -ENOMEM; 2167 ops->get_ethtool_stats(dev, &stats, data); 2168 } else { 2169 data = NULL; 2170 } 2171 2172 ret = -EFAULT; 2173 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2174 goto out; 2175 useraddr += sizeof(stats); 2176 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) 2177 goto out; 2178 ret = 0; 2179 2180 out: 2181 vfree(data); 2182 return ret; 2183 } 2184 2185 static int ethtool_vzalloc_stats_array(int n_stats, u64 **data) 2186 { 2187 if (n_stats < 0) 2188 return n_stats; 2189 if (n_stats > S32_MAX / sizeof(u64)) 2190 return -ENOMEM; 2191 if (WARN_ON_ONCE(!n_stats)) 2192 return -EOPNOTSUPP; 2193 2194 *data = vzalloc(array_size(n_stats, sizeof(u64))); 2195 if (!*data) 2196 return -ENOMEM; 2197 2198 return 0; 2199 } 2200 2201 static int ethtool_get_phy_stats_phydev(struct phy_device *phydev, 2202 struct ethtool_stats *stats, 2203 u64 **data) 2204 { 2205 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 2206 int n_stats, ret; 2207 2208 if (!phy_ops || !phy_ops->get_sset_count || !phy_ops->get_stats) 2209 return -EOPNOTSUPP; 2210 2211 n_stats = phy_ops->get_sset_count(phydev); 2212 2213 ret = ethtool_vzalloc_stats_array(n_stats, data); 2214 if (ret) 2215 return ret; 2216 2217 stats->n_stats = n_stats; 2218 return phy_ops->get_stats(phydev, stats, *data); 2219 } 2220 2221 static int ethtool_get_phy_stats_ethtool(struct net_device *dev, 2222 struct ethtool_stats *stats, 2223 u64 **data) 2224 { 2225 const struct ethtool_ops *ops = dev->ethtool_ops; 2226 int n_stats, ret; 2227 2228 if (!ops || !ops->get_sset_count || ops->get_ethtool_phy_stats) 2229 return -EOPNOTSUPP; 2230 2231 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); 2232 2233 ret = ethtool_vzalloc_stats_array(n_stats, data); 2234 if (ret) 2235 return ret; 2236 2237 stats->n_stats = n_stats; 2238 ops->get_ethtool_phy_stats(dev, stats, *data); 2239 2240 return 0; 2241 } 2242 2243 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) 2244 { 2245 struct phy_device *phydev = dev->phydev; 2246 struct ethtool_stats stats; 2247 u64 *data = NULL; 2248 int ret = -EOPNOTSUPP; 2249 2250 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2251 return -EFAULT; 2252 2253 if (phydev) 2254 ret = ethtool_get_phy_stats_phydev(phydev, &stats, &data); 2255 2256 if (ret == -EOPNOTSUPP) 2257 ret = ethtool_get_phy_stats_ethtool(dev, &stats, &data); 2258 2259 if (ret) 2260 goto out; 2261 2262 if (copy_to_user(useraddr, &stats, sizeof(stats))) { 2263 ret = -EFAULT; 2264 goto out; 2265 } 2266 2267 useraddr += sizeof(stats); 2268 if (copy_to_user(useraddr, data, array_size(stats.n_stats, sizeof(u64)))) 2269 ret = -EFAULT; 2270 2271 out: 2272 vfree(data); 2273 return ret; 2274 } 2275 2276 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) 2277 { 2278 struct ethtool_perm_addr epaddr; 2279 2280 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) 2281 return -EFAULT; 2282 2283 if (epaddr.size < dev->addr_len) 2284 return -ETOOSMALL; 2285 epaddr.size = dev->addr_len; 2286 2287 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) 2288 return -EFAULT; 2289 useraddr += sizeof(epaddr); 2290 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) 2291 return -EFAULT; 2292 return 0; 2293 } 2294 2295 static int ethtool_get_value(struct net_device *dev, char __user *useraddr, 2296 u32 cmd, u32 (*actor)(struct net_device *)) 2297 { 2298 struct ethtool_value edata = { .cmd = cmd }; 2299 2300 if (!actor) 2301 return -EOPNOTSUPP; 2302 2303 edata.data = actor(dev); 2304 2305 if (copy_to_user(useraddr, &edata, sizeof(edata))) 2306 return -EFAULT; 2307 return 0; 2308 } 2309 2310 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, 2311 void (*actor)(struct net_device *, u32)) 2312 { 2313 struct ethtool_value edata; 2314 2315 if (!actor) 2316 return -EOPNOTSUPP; 2317 2318 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2319 return -EFAULT; 2320 2321 actor(dev, edata.data); 2322 return 0; 2323 } 2324 2325 static int ethtool_set_value(struct net_device *dev, char __user *useraddr, 2326 int (*actor)(struct net_device *, u32)) 2327 { 2328 struct ethtool_value edata; 2329 2330 if (!actor) 2331 return -EOPNOTSUPP; 2332 2333 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2334 return -EFAULT; 2335 2336 return actor(dev, edata.data); 2337 } 2338 2339 static int 2340 ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) 2341 { 2342 if (!dev->ethtool_ops->flash_device) { 2343 req->devlink = netdev_to_devlink_get(dev); 2344 return 0; 2345 } 2346 2347 return dev->ethtool_ops->flash_device(dev, &req->efl); 2348 } 2349 2350 static int ethtool_set_dump(struct net_device *dev, 2351 void __user *useraddr) 2352 { 2353 struct ethtool_dump dump; 2354 2355 if (!dev->ethtool_ops->set_dump) 2356 return -EOPNOTSUPP; 2357 2358 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2359 return -EFAULT; 2360 2361 return dev->ethtool_ops->set_dump(dev, &dump); 2362 } 2363 2364 static int ethtool_get_dump_flag(struct net_device *dev, 2365 void __user *useraddr) 2366 { 2367 int ret; 2368 struct ethtool_dump dump; 2369 const struct ethtool_ops *ops = dev->ethtool_ops; 2370 2371 if (!ops->get_dump_flag) 2372 return -EOPNOTSUPP; 2373 2374 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2375 return -EFAULT; 2376 2377 ret = ops->get_dump_flag(dev, &dump); 2378 if (ret) 2379 return ret; 2380 2381 if (copy_to_user(useraddr, &dump, sizeof(dump))) 2382 return -EFAULT; 2383 return 0; 2384 } 2385 2386 static int ethtool_get_dump_data(struct net_device *dev, 2387 void __user *useraddr) 2388 { 2389 int ret; 2390 __u32 len; 2391 struct ethtool_dump dump, tmp; 2392 const struct ethtool_ops *ops = dev->ethtool_ops; 2393 void *data = NULL; 2394 2395 if (!ops->get_dump_data || !ops->get_dump_flag) 2396 return -EOPNOTSUPP; 2397 2398 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2399 return -EFAULT; 2400 2401 memset(&tmp, 0, sizeof(tmp)); 2402 tmp.cmd = ETHTOOL_GET_DUMP_FLAG; 2403 ret = ops->get_dump_flag(dev, &tmp); 2404 if (ret) 2405 return ret; 2406 2407 len = min(tmp.len, dump.len); 2408 if (!len) 2409 return -EFAULT; 2410 2411 /* Don't ever let the driver think there's more space available 2412 * than it requested with .get_dump_flag(). 2413 */ 2414 dump.len = len; 2415 2416 /* Always allocate enough space to hold the whole thing so that the 2417 * driver does not need to check the length and bother with partial 2418 * dumping. 2419 */ 2420 data = vzalloc(tmp.len); 2421 if (!data) 2422 return -ENOMEM; 2423 ret = ops->get_dump_data(dev, &dump, data); 2424 if (ret) 2425 goto out; 2426 2427 /* There are two sane possibilities: 2428 * 1. The driver's .get_dump_data() does not touch dump.len. 2429 * 2. Or it may set dump.len to how much it really writes, which 2430 * should be tmp.len (or len if it can do a partial dump). 2431 * In any case respond to userspace with the actual length of data 2432 * it's receiving. 2433 */ 2434 WARN_ON(dump.len != len && dump.len != tmp.len); 2435 dump.len = len; 2436 2437 if (copy_to_user(useraddr, &dump, sizeof(dump))) { 2438 ret = -EFAULT; 2439 goto out; 2440 } 2441 useraddr += offsetof(struct ethtool_dump, data); 2442 if (copy_to_user(useraddr, data, len)) 2443 ret = -EFAULT; 2444 out: 2445 vfree(data); 2446 return ret; 2447 } 2448 2449 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) 2450 { 2451 struct ethtool_ts_info info; 2452 int err; 2453 2454 err = __ethtool_get_ts_info(dev, &info); 2455 if (err) 2456 return err; 2457 2458 if (copy_to_user(useraddr, &info, sizeof(info))) 2459 return -EFAULT; 2460 2461 return 0; 2462 } 2463 2464 int ethtool_get_module_info_call(struct net_device *dev, 2465 struct ethtool_modinfo *modinfo) 2466 { 2467 const struct ethtool_ops *ops = dev->ethtool_ops; 2468 struct phy_device *phydev = dev->phydev; 2469 2470 if (dev->sfp_bus) 2471 return sfp_get_module_info(dev->sfp_bus, modinfo); 2472 2473 if (phydev && phydev->drv && phydev->drv->module_info) 2474 return phydev->drv->module_info(phydev, modinfo); 2475 2476 if (ops->get_module_info) 2477 return ops->get_module_info(dev, modinfo); 2478 2479 return -EOPNOTSUPP; 2480 } 2481 2482 static int ethtool_get_module_info(struct net_device *dev, 2483 void __user *useraddr) 2484 { 2485 int ret; 2486 struct ethtool_modinfo modinfo; 2487 2488 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) 2489 return -EFAULT; 2490 2491 ret = ethtool_get_module_info_call(dev, &modinfo); 2492 if (ret) 2493 return ret; 2494 2495 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) 2496 return -EFAULT; 2497 2498 return 0; 2499 } 2500 2501 int ethtool_get_module_eeprom_call(struct net_device *dev, 2502 struct ethtool_eeprom *ee, u8 *data) 2503 { 2504 const struct ethtool_ops *ops = dev->ethtool_ops; 2505 struct phy_device *phydev = dev->phydev; 2506 2507 if (dev->sfp_bus) 2508 return sfp_get_module_eeprom(dev->sfp_bus, ee, data); 2509 2510 if (phydev && phydev->drv && phydev->drv->module_eeprom) 2511 return phydev->drv->module_eeprom(phydev, ee, data); 2512 2513 if (ops->get_module_eeprom) 2514 return ops->get_module_eeprom(dev, ee, data); 2515 2516 return -EOPNOTSUPP; 2517 } 2518 2519 static int ethtool_get_module_eeprom(struct net_device *dev, 2520 void __user *useraddr) 2521 { 2522 int ret; 2523 struct ethtool_modinfo modinfo; 2524 2525 ret = ethtool_get_module_info_call(dev, &modinfo); 2526 if (ret) 2527 return ret; 2528 2529 return ethtool_get_any_eeprom(dev, useraddr, 2530 ethtool_get_module_eeprom_call, 2531 modinfo.eeprom_len); 2532 } 2533 2534 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) 2535 { 2536 switch (tuna->id) { 2537 case ETHTOOL_RX_COPYBREAK: 2538 case ETHTOOL_TX_COPYBREAK: 2539 case ETHTOOL_TX_COPYBREAK_BUF_SIZE: 2540 if (tuna->len != sizeof(u32) || 2541 tuna->type_id != ETHTOOL_TUNABLE_U32) 2542 return -EINVAL; 2543 break; 2544 case ETHTOOL_PFC_PREVENTION_TOUT: 2545 if (tuna->len != sizeof(u16) || 2546 tuna->type_id != ETHTOOL_TUNABLE_U16) 2547 return -EINVAL; 2548 break; 2549 default: 2550 return -EINVAL; 2551 } 2552 2553 return 0; 2554 } 2555 2556 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) 2557 { 2558 int ret; 2559 struct ethtool_tunable tuna; 2560 const struct ethtool_ops *ops = dev->ethtool_ops; 2561 void *data; 2562 2563 if (!ops->get_tunable) 2564 return -EOPNOTSUPP; 2565 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2566 return -EFAULT; 2567 ret = ethtool_tunable_valid(&tuna); 2568 if (ret) 2569 return ret; 2570 data = kzalloc(tuna.len, GFP_USER); 2571 if (!data) 2572 return -ENOMEM; 2573 ret = ops->get_tunable(dev, &tuna, data); 2574 if (ret) 2575 goto out; 2576 useraddr += sizeof(tuna); 2577 ret = -EFAULT; 2578 if (copy_to_user(useraddr, data, tuna.len)) 2579 goto out; 2580 ret = 0; 2581 2582 out: 2583 kfree(data); 2584 return ret; 2585 } 2586 2587 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) 2588 { 2589 int ret; 2590 struct ethtool_tunable tuna; 2591 const struct ethtool_ops *ops = dev->ethtool_ops; 2592 void *data; 2593 2594 if (!ops->set_tunable) 2595 return -EOPNOTSUPP; 2596 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2597 return -EFAULT; 2598 ret = ethtool_tunable_valid(&tuna); 2599 if (ret) 2600 return ret; 2601 useraddr += sizeof(tuna); 2602 data = memdup_user(useraddr, tuna.len); 2603 if (IS_ERR(data)) 2604 return PTR_ERR(data); 2605 ret = ops->set_tunable(dev, &tuna, data); 2606 2607 kfree(data); 2608 return ret; 2609 } 2610 2611 static noinline_for_stack int 2612 ethtool_get_per_queue_coalesce(struct net_device *dev, 2613 void __user *useraddr, 2614 struct ethtool_per_queue_op *per_queue_opt) 2615 { 2616 u32 bit; 2617 int ret; 2618 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2619 2620 if (!dev->ethtool_ops->get_per_queue_coalesce) 2621 return -EOPNOTSUPP; 2622 2623 useraddr += sizeof(*per_queue_opt); 2624 2625 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, 2626 MAX_NUM_QUEUE); 2627 2628 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2629 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2630 2631 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); 2632 if (ret != 0) 2633 return ret; 2634 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2635 return -EFAULT; 2636 useraddr += sizeof(coalesce); 2637 } 2638 2639 return 0; 2640 } 2641 2642 static noinline_for_stack int 2643 ethtool_set_per_queue_coalesce(struct net_device *dev, 2644 void __user *useraddr, 2645 struct ethtool_per_queue_op *per_queue_opt) 2646 { 2647 u32 bit; 2648 int i, ret = 0; 2649 int n_queue; 2650 struct ethtool_coalesce *backup = NULL, *tmp = NULL; 2651 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2652 2653 if ((!dev->ethtool_ops->set_per_queue_coalesce) || 2654 (!dev->ethtool_ops->get_per_queue_coalesce)) 2655 return -EOPNOTSUPP; 2656 2657 useraddr += sizeof(*per_queue_opt); 2658 2659 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); 2660 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); 2661 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); 2662 if (!backup) 2663 return -ENOMEM; 2664 2665 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2666 struct ethtool_coalesce coalesce; 2667 2668 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); 2669 if (ret != 0) 2670 goto roll_back; 2671 2672 tmp++; 2673 2674 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { 2675 ret = -EFAULT; 2676 goto roll_back; 2677 } 2678 2679 if (!ethtool_set_coalesce_supported(dev, &coalesce)) { 2680 ret = -EOPNOTSUPP; 2681 goto roll_back; 2682 } 2683 2684 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); 2685 if (ret != 0) 2686 goto roll_back; 2687 2688 useraddr += sizeof(coalesce); 2689 } 2690 2691 roll_back: 2692 if (ret != 0) { 2693 tmp = backup; 2694 for_each_set_bit(i, queue_mask, bit) { 2695 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); 2696 tmp++; 2697 } 2698 } 2699 kfree(backup); 2700 2701 return ret; 2702 } 2703 2704 static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, 2705 void __user *useraddr, u32 sub_cmd) 2706 { 2707 struct ethtool_per_queue_op per_queue_opt; 2708 2709 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) 2710 return -EFAULT; 2711 2712 if (per_queue_opt.sub_command != sub_cmd) 2713 return -EINVAL; 2714 2715 switch (per_queue_opt.sub_command) { 2716 case ETHTOOL_GCOALESCE: 2717 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2718 case ETHTOOL_SCOALESCE: 2719 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2720 default: 2721 return -EOPNOTSUPP; 2722 } 2723 } 2724 2725 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) 2726 { 2727 switch (tuna->id) { 2728 case ETHTOOL_PHY_DOWNSHIFT: 2729 case ETHTOOL_PHY_FAST_LINK_DOWN: 2730 if (tuna->len != sizeof(u8) || 2731 tuna->type_id != ETHTOOL_TUNABLE_U8) 2732 return -EINVAL; 2733 break; 2734 case ETHTOOL_PHY_EDPD: 2735 if (tuna->len != sizeof(u16) || 2736 tuna->type_id != ETHTOOL_TUNABLE_U16) 2737 return -EINVAL; 2738 break; 2739 default: 2740 return -EINVAL; 2741 } 2742 2743 return 0; 2744 } 2745 2746 static int get_phy_tunable(struct net_device *dev, void __user *useraddr) 2747 { 2748 struct phy_device *phydev = dev->phydev; 2749 struct ethtool_tunable tuna; 2750 bool phy_drv_tunable; 2751 void *data; 2752 int ret; 2753 2754 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 2755 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) 2756 return -EOPNOTSUPP; 2757 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2758 return -EFAULT; 2759 ret = ethtool_phy_tunable_valid(&tuna); 2760 if (ret) 2761 return ret; 2762 data = kzalloc(tuna.len, GFP_USER); 2763 if (!data) 2764 return -ENOMEM; 2765 if (phy_drv_tunable) { 2766 mutex_lock(&phydev->lock); 2767 ret = phydev->drv->get_tunable(phydev, &tuna, data); 2768 mutex_unlock(&phydev->lock); 2769 } else { 2770 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); 2771 } 2772 if (ret) 2773 goto out; 2774 useraddr += sizeof(tuna); 2775 ret = -EFAULT; 2776 if (copy_to_user(useraddr, data, tuna.len)) 2777 goto out; 2778 ret = 0; 2779 2780 out: 2781 kfree(data); 2782 return ret; 2783 } 2784 2785 static int set_phy_tunable(struct net_device *dev, void __user *useraddr) 2786 { 2787 struct phy_device *phydev = dev->phydev; 2788 struct ethtool_tunable tuna; 2789 bool phy_drv_tunable; 2790 void *data; 2791 int ret; 2792 2793 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 2794 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) 2795 return -EOPNOTSUPP; 2796 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2797 return -EFAULT; 2798 ret = ethtool_phy_tunable_valid(&tuna); 2799 if (ret) 2800 return ret; 2801 useraddr += sizeof(tuna); 2802 data = memdup_user(useraddr, tuna.len); 2803 if (IS_ERR(data)) 2804 return PTR_ERR(data); 2805 if (phy_drv_tunable) { 2806 mutex_lock(&phydev->lock); 2807 ret = phydev->drv->set_tunable(phydev, &tuna, data); 2808 mutex_unlock(&phydev->lock); 2809 } else { 2810 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); 2811 } 2812 2813 kfree(data); 2814 return ret; 2815 } 2816 2817 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) 2818 { 2819 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; 2820 int rc; 2821 2822 if (!dev->ethtool_ops->get_fecparam) 2823 return -EOPNOTSUPP; 2824 2825 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); 2826 if (rc) 2827 return rc; 2828 2829 if (WARN_ON_ONCE(fecparam.reserved)) 2830 fecparam.reserved = 0; 2831 2832 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) 2833 return -EFAULT; 2834 return 0; 2835 } 2836 2837 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) 2838 { 2839 struct ethtool_fecparam fecparam; 2840 2841 if (!dev->ethtool_ops->set_fecparam) 2842 return -EOPNOTSUPP; 2843 2844 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) 2845 return -EFAULT; 2846 2847 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) 2848 return -EINVAL; 2849 2850 fecparam.active_fec = 0; 2851 fecparam.reserved = 0; 2852 2853 return dev->ethtool_ops->set_fecparam(dev, &fecparam); 2854 } 2855 2856 /* The main entry point in this file. Called from net/core/dev_ioctl.c */ 2857 2858 static int 2859 __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, 2860 u32 ethcmd, struct ethtool_devlink_compat *devlink_state) 2861 { 2862 struct net_device *dev; 2863 u32 sub_cmd; 2864 int rc; 2865 netdev_features_t old_features; 2866 2867 dev = __dev_get_by_name(net, ifr->ifr_name); 2868 if (!dev) 2869 return -ENODEV; 2870 2871 if (ethcmd == ETHTOOL_PERQUEUE) { 2872 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) 2873 return -EFAULT; 2874 } else { 2875 sub_cmd = ethcmd; 2876 } 2877 /* Allow some commands to be done by anyone */ 2878 switch (sub_cmd) { 2879 case ETHTOOL_GSET: 2880 case ETHTOOL_GDRVINFO: 2881 case ETHTOOL_GMSGLVL: 2882 case ETHTOOL_GLINK: 2883 case ETHTOOL_GCOALESCE: 2884 case ETHTOOL_GRINGPARAM: 2885 case ETHTOOL_GPAUSEPARAM: 2886 case ETHTOOL_GRXCSUM: 2887 case ETHTOOL_GTXCSUM: 2888 case ETHTOOL_GSG: 2889 case ETHTOOL_GSSET_INFO: 2890 case ETHTOOL_GSTRINGS: 2891 case ETHTOOL_GSTATS: 2892 case ETHTOOL_GPHYSTATS: 2893 case ETHTOOL_GTSO: 2894 case ETHTOOL_GPERMADDR: 2895 case ETHTOOL_GUFO: 2896 case ETHTOOL_GGSO: 2897 case ETHTOOL_GGRO: 2898 case ETHTOOL_GFLAGS: 2899 case ETHTOOL_GPFLAGS: 2900 case ETHTOOL_GRXFH: 2901 case ETHTOOL_GRXRINGS: 2902 case ETHTOOL_GRXCLSRLCNT: 2903 case ETHTOOL_GRXCLSRULE: 2904 case ETHTOOL_GRXCLSRLALL: 2905 case ETHTOOL_GRXFHINDIR: 2906 case ETHTOOL_GRSSH: 2907 case ETHTOOL_GFEATURES: 2908 case ETHTOOL_GCHANNELS: 2909 case ETHTOOL_GET_TS_INFO: 2910 case ETHTOOL_GEEE: 2911 case ETHTOOL_GTUNABLE: 2912 case ETHTOOL_PHY_GTUNABLE: 2913 case ETHTOOL_GLINKSETTINGS: 2914 case ETHTOOL_GFECPARAM: 2915 break; 2916 default: 2917 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 2918 return -EPERM; 2919 } 2920 2921 if (dev->dev.parent) 2922 pm_runtime_get_sync(dev->dev.parent); 2923 2924 if (!netif_device_present(dev)) { 2925 rc = -ENODEV; 2926 goto out; 2927 } 2928 2929 if (dev->ethtool_ops->begin) { 2930 rc = dev->ethtool_ops->begin(dev); 2931 if (rc < 0) 2932 goto out; 2933 } 2934 old_features = dev->features; 2935 2936 switch (ethcmd) { 2937 case ETHTOOL_GSET: 2938 rc = ethtool_get_settings(dev, useraddr); 2939 break; 2940 case ETHTOOL_SSET: 2941 rc = ethtool_set_settings(dev, useraddr); 2942 break; 2943 case ETHTOOL_GDRVINFO: 2944 rc = ethtool_get_drvinfo(dev, devlink_state); 2945 break; 2946 case ETHTOOL_GREGS: 2947 rc = ethtool_get_regs(dev, useraddr); 2948 break; 2949 case ETHTOOL_GWOL: 2950 rc = ethtool_get_wol(dev, useraddr); 2951 break; 2952 case ETHTOOL_SWOL: 2953 rc = ethtool_set_wol(dev, useraddr); 2954 break; 2955 case ETHTOOL_GMSGLVL: 2956 rc = ethtool_get_value(dev, useraddr, ethcmd, 2957 dev->ethtool_ops->get_msglevel); 2958 break; 2959 case ETHTOOL_SMSGLVL: 2960 rc = ethtool_set_value_void(dev, useraddr, 2961 dev->ethtool_ops->set_msglevel); 2962 if (!rc) 2963 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL); 2964 break; 2965 case ETHTOOL_GEEE: 2966 rc = ethtool_get_eee(dev, useraddr); 2967 break; 2968 case ETHTOOL_SEEE: 2969 rc = ethtool_set_eee(dev, useraddr); 2970 break; 2971 case ETHTOOL_NWAY_RST: 2972 rc = ethtool_nway_reset(dev); 2973 break; 2974 case ETHTOOL_GLINK: 2975 rc = ethtool_get_link(dev, useraddr); 2976 break; 2977 case ETHTOOL_GEEPROM: 2978 rc = ethtool_get_eeprom(dev, useraddr); 2979 break; 2980 case ETHTOOL_SEEPROM: 2981 rc = ethtool_set_eeprom(dev, useraddr); 2982 break; 2983 case ETHTOOL_GCOALESCE: 2984 rc = ethtool_get_coalesce(dev, useraddr); 2985 break; 2986 case ETHTOOL_SCOALESCE: 2987 rc = ethtool_set_coalesce(dev, useraddr); 2988 break; 2989 case ETHTOOL_GRINGPARAM: 2990 rc = ethtool_get_ringparam(dev, useraddr); 2991 break; 2992 case ETHTOOL_SRINGPARAM: 2993 rc = ethtool_set_ringparam(dev, useraddr); 2994 break; 2995 case ETHTOOL_GPAUSEPARAM: 2996 rc = ethtool_get_pauseparam(dev, useraddr); 2997 break; 2998 case ETHTOOL_SPAUSEPARAM: 2999 rc = ethtool_set_pauseparam(dev, useraddr); 3000 break; 3001 case ETHTOOL_TEST: 3002 rc = ethtool_self_test(dev, useraddr); 3003 break; 3004 case ETHTOOL_GSTRINGS: 3005 rc = ethtool_get_strings(dev, useraddr); 3006 break; 3007 case ETHTOOL_PHYS_ID: 3008 rc = ethtool_phys_id(dev, useraddr); 3009 break; 3010 case ETHTOOL_GSTATS: 3011 rc = ethtool_get_stats(dev, useraddr); 3012 break; 3013 case ETHTOOL_GPERMADDR: 3014 rc = ethtool_get_perm_addr(dev, useraddr); 3015 break; 3016 case ETHTOOL_GFLAGS: 3017 rc = ethtool_get_value(dev, useraddr, ethcmd, 3018 __ethtool_get_flags); 3019 break; 3020 case ETHTOOL_SFLAGS: 3021 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); 3022 break; 3023 case ETHTOOL_GPFLAGS: 3024 rc = ethtool_get_value(dev, useraddr, ethcmd, 3025 dev->ethtool_ops->get_priv_flags); 3026 if (!rc) 3027 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL); 3028 break; 3029 case ETHTOOL_SPFLAGS: 3030 rc = ethtool_set_value(dev, useraddr, 3031 dev->ethtool_ops->set_priv_flags); 3032 break; 3033 case ETHTOOL_GRXFH: 3034 case ETHTOOL_GRXRINGS: 3035 case ETHTOOL_GRXCLSRLCNT: 3036 case ETHTOOL_GRXCLSRULE: 3037 case ETHTOOL_GRXCLSRLALL: 3038 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); 3039 break; 3040 case ETHTOOL_SRXFH: 3041 case ETHTOOL_SRXCLSRLDEL: 3042 case ETHTOOL_SRXCLSRLINS: 3043 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); 3044 break; 3045 case ETHTOOL_FLASHDEV: 3046 rc = ethtool_flash_device(dev, devlink_state); 3047 break; 3048 case ETHTOOL_RESET: 3049 rc = ethtool_reset(dev, useraddr); 3050 break; 3051 case ETHTOOL_GSSET_INFO: 3052 rc = ethtool_get_sset_info(dev, useraddr); 3053 break; 3054 case ETHTOOL_GRXFHINDIR: 3055 rc = ethtool_get_rxfh_indir(dev, useraddr); 3056 break; 3057 case ETHTOOL_SRXFHINDIR: 3058 rc = ethtool_set_rxfh_indir(dev, useraddr); 3059 break; 3060 case ETHTOOL_GRSSH: 3061 rc = ethtool_get_rxfh(dev, useraddr); 3062 break; 3063 case ETHTOOL_SRSSH: 3064 rc = ethtool_set_rxfh(dev, useraddr); 3065 break; 3066 case ETHTOOL_GFEATURES: 3067 rc = ethtool_get_features(dev, useraddr); 3068 break; 3069 case ETHTOOL_SFEATURES: 3070 rc = ethtool_set_features(dev, useraddr); 3071 break; 3072 case ETHTOOL_GTXCSUM: 3073 case ETHTOOL_GRXCSUM: 3074 case ETHTOOL_GSG: 3075 case ETHTOOL_GTSO: 3076 case ETHTOOL_GGSO: 3077 case ETHTOOL_GGRO: 3078 rc = ethtool_get_one_feature(dev, useraddr, ethcmd); 3079 break; 3080 case ETHTOOL_STXCSUM: 3081 case ETHTOOL_SRXCSUM: 3082 case ETHTOOL_SSG: 3083 case ETHTOOL_STSO: 3084 case ETHTOOL_SGSO: 3085 case ETHTOOL_SGRO: 3086 rc = ethtool_set_one_feature(dev, useraddr, ethcmd); 3087 break; 3088 case ETHTOOL_GCHANNELS: 3089 rc = ethtool_get_channels(dev, useraddr); 3090 break; 3091 case ETHTOOL_SCHANNELS: 3092 rc = ethtool_set_channels(dev, useraddr); 3093 break; 3094 case ETHTOOL_SET_DUMP: 3095 rc = ethtool_set_dump(dev, useraddr); 3096 break; 3097 case ETHTOOL_GET_DUMP_FLAG: 3098 rc = ethtool_get_dump_flag(dev, useraddr); 3099 break; 3100 case ETHTOOL_GET_DUMP_DATA: 3101 rc = ethtool_get_dump_data(dev, useraddr); 3102 break; 3103 case ETHTOOL_GET_TS_INFO: 3104 rc = ethtool_get_ts_info(dev, useraddr); 3105 break; 3106 case ETHTOOL_GMODULEINFO: 3107 rc = ethtool_get_module_info(dev, useraddr); 3108 break; 3109 case ETHTOOL_GMODULEEEPROM: 3110 rc = ethtool_get_module_eeprom(dev, useraddr); 3111 break; 3112 case ETHTOOL_GTUNABLE: 3113 rc = ethtool_get_tunable(dev, useraddr); 3114 break; 3115 case ETHTOOL_STUNABLE: 3116 rc = ethtool_set_tunable(dev, useraddr); 3117 break; 3118 case ETHTOOL_GPHYSTATS: 3119 rc = ethtool_get_phy_stats(dev, useraddr); 3120 break; 3121 case ETHTOOL_PERQUEUE: 3122 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); 3123 break; 3124 case ETHTOOL_GLINKSETTINGS: 3125 rc = ethtool_get_link_ksettings(dev, useraddr); 3126 break; 3127 case ETHTOOL_SLINKSETTINGS: 3128 rc = ethtool_set_link_ksettings(dev, useraddr); 3129 break; 3130 case ETHTOOL_PHY_GTUNABLE: 3131 rc = get_phy_tunable(dev, useraddr); 3132 break; 3133 case ETHTOOL_PHY_STUNABLE: 3134 rc = set_phy_tunable(dev, useraddr); 3135 break; 3136 case ETHTOOL_GFECPARAM: 3137 rc = ethtool_get_fecparam(dev, useraddr); 3138 break; 3139 case ETHTOOL_SFECPARAM: 3140 rc = ethtool_set_fecparam(dev, useraddr); 3141 break; 3142 default: 3143 rc = -EOPNOTSUPP; 3144 } 3145 3146 if (dev->ethtool_ops->complete) 3147 dev->ethtool_ops->complete(dev); 3148 3149 if (old_features != dev->features) 3150 netdev_features_change(dev); 3151 out: 3152 if (dev->dev.parent) 3153 pm_runtime_put(dev->dev.parent); 3154 3155 return rc; 3156 } 3157 3158 int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) 3159 { 3160 struct ethtool_devlink_compat *state; 3161 u32 ethcmd; 3162 int rc; 3163 3164 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) 3165 return -EFAULT; 3166 3167 state = kzalloc(sizeof(*state), GFP_KERNEL); 3168 if (!state) 3169 return -ENOMEM; 3170 3171 switch (ethcmd) { 3172 case ETHTOOL_FLASHDEV: 3173 if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { 3174 rc = -EFAULT; 3175 goto exit_free; 3176 } 3177 state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; 3178 break; 3179 } 3180 3181 rtnl_lock(); 3182 rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); 3183 rtnl_unlock(); 3184 if (rc) 3185 goto exit_free; 3186 3187 switch (ethcmd) { 3188 case ETHTOOL_FLASHDEV: 3189 if (state->devlink) 3190 rc = devlink_compat_flash_update(state->devlink, 3191 state->efl.data); 3192 break; 3193 case ETHTOOL_GDRVINFO: 3194 if (state->devlink) 3195 devlink_compat_running_version(state->devlink, 3196 state->info.fw_version, 3197 sizeof(state->info.fw_version)); 3198 if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { 3199 rc = -EFAULT; 3200 goto exit_free; 3201 } 3202 break; 3203 } 3204 3205 exit_free: 3206 if (state->devlink) 3207 devlink_put(state->devlink); 3208 kfree(state); 3209 return rc; 3210 } 3211 3212 struct ethtool_rx_flow_key { 3213 struct flow_dissector_key_basic basic; 3214 union { 3215 struct flow_dissector_key_ipv4_addrs ipv4; 3216 struct flow_dissector_key_ipv6_addrs ipv6; 3217 }; 3218 struct flow_dissector_key_ports tp; 3219 struct flow_dissector_key_ip ip; 3220 struct flow_dissector_key_vlan vlan; 3221 struct flow_dissector_key_eth_addrs eth_addrs; 3222 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ 3223 3224 struct ethtool_rx_flow_match { 3225 struct flow_dissector dissector; 3226 struct ethtool_rx_flow_key key; 3227 struct ethtool_rx_flow_key mask; 3228 }; 3229 3230 struct ethtool_rx_flow_rule * 3231 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) 3232 { 3233 const struct ethtool_rx_flow_spec *fs = input->fs; 3234 struct ethtool_rx_flow_match *match; 3235 struct ethtool_rx_flow_rule *flow; 3236 struct flow_action_entry *act; 3237 3238 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + 3239 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); 3240 if (!flow) 3241 return ERR_PTR(-ENOMEM); 3242 3243 /* ethtool_rx supports only one single action per rule. */ 3244 flow->rule = flow_rule_alloc(1); 3245 if (!flow->rule) { 3246 kfree(flow); 3247 return ERR_PTR(-ENOMEM); 3248 } 3249 3250 match = (struct ethtool_rx_flow_match *)flow->priv; 3251 flow->rule->match.dissector = &match->dissector; 3252 flow->rule->match.mask = &match->mask; 3253 flow->rule->match.key = &match->key; 3254 3255 match->mask.basic.n_proto = htons(0xffff); 3256 3257 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3258 case ETHER_FLOW: { 3259 const struct ethhdr *ether_spec, *ether_m_spec; 3260 3261 ether_spec = &fs->h_u.ether_spec; 3262 ether_m_spec = &fs->m_u.ether_spec; 3263 3264 if (!is_zero_ether_addr(ether_m_spec->h_source)) { 3265 ether_addr_copy(match->key.eth_addrs.src, 3266 ether_spec->h_source); 3267 ether_addr_copy(match->mask.eth_addrs.src, 3268 ether_m_spec->h_source); 3269 } 3270 if (!is_zero_ether_addr(ether_m_spec->h_dest)) { 3271 ether_addr_copy(match->key.eth_addrs.dst, 3272 ether_spec->h_dest); 3273 ether_addr_copy(match->mask.eth_addrs.dst, 3274 ether_m_spec->h_dest); 3275 } 3276 if (ether_m_spec->h_proto) { 3277 match->key.basic.n_proto = ether_spec->h_proto; 3278 match->mask.basic.n_proto = ether_m_spec->h_proto; 3279 } 3280 } 3281 break; 3282 case TCP_V4_FLOW: 3283 case UDP_V4_FLOW: { 3284 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; 3285 3286 match->key.basic.n_proto = htons(ETH_P_IP); 3287 3288 v4_spec = &fs->h_u.tcp_ip4_spec; 3289 v4_m_spec = &fs->m_u.tcp_ip4_spec; 3290 3291 if (v4_m_spec->ip4src) { 3292 match->key.ipv4.src = v4_spec->ip4src; 3293 match->mask.ipv4.src = v4_m_spec->ip4src; 3294 } 3295 if (v4_m_spec->ip4dst) { 3296 match->key.ipv4.dst = v4_spec->ip4dst; 3297 match->mask.ipv4.dst = v4_m_spec->ip4dst; 3298 } 3299 if (v4_m_spec->ip4src || 3300 v4_m_spec->ip4dst) { 3301 match->dissector.used_keys |= 3302 BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS); 3303 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = 3304 offsetof(struct ethtool_rx_flow_key, ipv4); 3305 } 3306 if (v4_m_spec->psrc) { 3307 match->key.tp.src = v4_spec->psrc; 3308 match->mask.tp.src = v4_m_spec->psrc; 3309 } 3310 if (v4_m_spec->pdst) { 3311 match->key.tp.dst = v4_spec->pdst; 3312 match->mask.tp.dst = v4_m_spec->pdst; 3313 } 3314 if (v4_m_spec->psrc || 3315 v4_m_spec->pdst) { 3316 match->dissector.used_keys |= 3317 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3318 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3319 offsetof(struct ethtool_rx_flow_key, tp); 3320 } 3321 if (v4_m_spec->tos) { 3322 match->key.ip.tos = v4_spec->tos; 3323 match->mask.ip.tos = v4_m_spec->tos; 3324 match->dissector.used_keys |= 3325 BIT(FLOW_DISSECTOR_KEY_IP); 3326 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3327 offsetof(struct ethtool_rx_flow_key, ip); 3328 } 3329 } 3330 break; 3331 case TCP_V6_FLOW: 3332 case UDP_V6_FLOW: { 3333 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; 3334 3335 match->key.basic.n_proto = htons(ETH_P_IPV6); 3336 3337 v6_spec = &fs->h_u.tcp_ip6_spec; 3338 v6_m_spec = &fs->m_u.tcp_ip6_spec; 3339 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) { 3340 memcpy(&match->key.ipv6.src, v6_spec->ip6src, 3341 sizeof(match->key.ipv6.src)); 3342 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, 3343 sizeof(match->mask.ipv6.src)); 3344 } 3345 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3346 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, 3347 sizeof(match->key.ipv6.dst)); 3348 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, 3349 sizeof(match->mask.ipv6.dst)); 3350 } 3351 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) || 3352 !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3353 match->dissector.used_keys |= 3354 BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS); 3355 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = 3356 offsetof(struct ethtool_rx_flow_key, ipv6); 3357 } 3358 if (v6_m_spec->psrc) { 3359 match->key.tp.src = v6_spec->psrc; 3360 match->mask.tp.src = v6_m_spec->psrc; 3361 } 3362 if (v6_m_spec->pdst) { 3363 match->key.tp.dst = v6_spec->pdst; 3364 match->mask.tp.dst = v6_m_spec->pdst; 3365 } 3366 if (v6_m_spec->psrc || 3367 v6_m_spec->pdst) { 3368 match->dissector.used_keys |= 3369 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3370 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3371 offsetof(struct ethtool_rx_flow_key, tp); 3372 } 3373 if (v6_m_spec->tclass) { 3374 match->key.ip.tos = v6_spec->tclass; 3375 match->mask.ip.tos = v6_m_spec->tclass; 3376 match->dissector.used_keys |= 3377 BIT_ULL(FLOW_DISSECTOR_KEY_IP); 3378 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3379 offsetof(struct ethtool_rx_flow_key, ip); 3380 } 3381 } 3382 break; 3383 default: 3384 ethtool_rx_flow_rule_destroy(flow); 3385 return ERR_PTR(-EINVAL); 3386 } 3387 3388 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3389 case TCP_V4_FLOW: 3390 case TCP_V6_FLOW: 3391 match->key.basic.ip_proto = IPPROTO_TCP; 3392 match->mask.basic.ip_proto = 0xff; 3393 break; 3394 case UDP_V4_FLOW: 3395 case UDP_V6_FLOW: 3396 match->key.basic.ip_proto = IPPROTO_UDP; 3397 match->mask.basic.ip_proto = 0xff; 3398 break; 3399 } 3400 3401 match->dissector.used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_BASIC); 3402 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = 3403 offsetof(struct ethtool_rx_flow_key, basic); 3404 3405 if (fs->flow_type & FLOW_EXT) { 3406 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3407 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3408 3409 if (ext_m_spec->vlan_etype) { 3410 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; 3411 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; 3412 } 3413 3414 if (ext_m_spec->vlan_tci) { 3415 match->key.vlan.vlan_id = 3416 ntohs(ext_h_spec->vlan_tci) & 0x0fff; 3417 match->mask.vlan.vlan_id = 3418 ntohs(ext_m_spec->vlan_tci) & 0x0fff; 3419 3420 match->key.vlan.vlan_dei = 3421 !!(ext_h_spec->vlan_tci & htons(0x1000)); 3422 match->mask.vlan.vlan_dei = 3423 !!(ext_m_spec->vlan_tci & htons(0x1000)); 3424 3425 match->key.vlan.vlan_priority = 3426 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; 3427 match->mask.vlan.vlan_priority = 3428 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; 3429 } 3430 3431 if (ext_m_spec->vlan_etype || 3432 ext_m_spec->vlan_tci) { 3433 match->dissector.used_keys |= 3434 BIT_ULL(FLOW_DISSECTOR_KEY_VLAN); 3435 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = 3436 offsetof(struct ethtool_rx_flow_key, vlan); 3437 } 3438 } 3439 if (fs->flow_type & FLOW_MAC_EXT) { 3440 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3441 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3442 3443 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, 3444 ETH_ALEN); 3445 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, 3446 ETH_ALEN); 3447 3448 match->dissector.used_keys |= 3449 BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS); 3450 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = 3451 offsetof(struct ethtool_rx_flow_key, eth_addrs); 3452 } 3453 3454 act = &flow->rule->action.entries[0]; 3455 switch (fs->ring_cookie) { 3456 case RX_CLS_FLOW_DISC: 3457 act->id = FLOW_ACTION_DROP; 3458 break; 3459 case RX_CLS_FLOW_WAKE: 3460 act->id = FLOW_ACTION_WAKE; 3461 break; 3462 default: 3463 act->id = FLOW_ACTION_QUEUE; 3464 if (fs->flow_type & FLOW_RSS) 3465 act->queue.ctx = input->rss_ctx; 3466 3467 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); 3468 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); 3469 break; 3470 } 3471 3472 return flow; 3473 } 3474 EXPORT_SYMBOL(ethtool_rx_flow_rule_create); 3475 3476 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) 3477 { 3478 kfree(flow->rule); 3479 kfree(flow); 3480 } 3481 EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); 3482