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_enabled = eee->eee_enabled; 1518 keee->tx_lpi_enabled = eee->tx_lpi_enabled; 1519 keee->tx_lpi_timer = eee->tx_lpi_timer; 1520 1521 ethtool_convert_legacy_u32_to_link_mode(keee->advertised, 1522 eee->advertised); 1523 } 1524 1525 static void keee_to_eee(struct ethtool_eee *eee, 1526 const struct ethtool_keee *keee) 1527 { 1528 bool overflow; 1529 1530 memset(eee, 0, sizeof(*eee)); 1531 1532 eee->eee_active = keee->eee_active; 1533 eee->eee_enabled = keee->eee_enabled; 1534 eee->tx_lpi_enabled = keee->tx_lpi_enabled; 1535 eee->tx_lpi_timer = keee->tx_lpi_timer; 1536 1537 overflow = !ethtool_convert_link_mode_to_legacy_u32(&eee->supported, 1538 keee->supported); 1539 ethtool_convert_link_mode_to_legacy_u32(&eee->advertised, 1540 keee->advertised); 1541 ethtool_convert_link_mode_to_legacy_u32(&eee->lp_advertised, 1542 keee->lp_advertised); 1543 if (overflow) 1544 pr_warn("Ethtool ioctl interface doesn't support passing EEE linkmodes beyond bit 32\n"); 1545 } 1546 1547 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) 1548 { 1549 struct ethtool_keee keee; 1550 struct ethtool_eee eee; 1551 int rc; 1552 1553 if (!dev->ethtool_ops->get_eee) 1554 return -EOPNOTSUPP; 1555 1556 memset(&keee, 0, sizeof(keee)); 1557 rc = dev->ethtool_ops->get_eee(dev, &keee); 1558 if (rc) 1559 return rc; 1560 1561 keee_to_eee(&eee, &keee); 1562 if (copy_to_user(useraddr, &eee, sizeof(eee))) 1563 return -EFAULT; 1564 1565 return 0; 1566 } 1567 1568 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) 1569 { 1570 struct ethtool_keee keee; 1571 struct ethtool_eee eee; 1572 int ret; 1573 1574 if (!dev->ethtool_ops->set_eee) 1575 return -EOPNOTSUPP; 1576 1577 if (copy_from_user(&eee, useraddr, sizeof(eee))) 1578 return -EFAULT; 1579 1580 eee_to_keee(&keee, &eee); 1581 ret = dev->ethtool_ops->set_eee(dev, &keee); 1582 if (!ret) 1583 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL); 1584 return ret; 1585 } 1586 1587 static int ethtool_nway_reset(struct net_device *dev) 1588 { 1589 if (!dev->ethtool_ops->nway_reset) 1590 return -EOPNOTSUPP; 1591 1592 return dev->ethtool_ops->nway_reset(dev); 1593 } 1594 1595 static int ethtool_get_link(struct net_device *dev, char __user *useraddr) 1596 { 1597 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; 1598 int link = __ethtool_get_link(dev); 1599 1600 if (link < 0) 1601 return link; 1602 1603 edata.data = link; 1604 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1605 return -EFAULT; 1606 return 0; 1607 } 1608 1609 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, 1610 int (*getter)(struct net_device *, 1611 struct ethtool_eeprom *, u8 *), 1612 u32 total_len) 1613 { 1614 struct ethtool_eeprom eeprom; 1615 void __user *userbuf = useraddr + sizeof(eeprom); 1616 u32 bytes_remaining; 1617 u8 *data; 1618 int ret = 0; 1619 1620 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1621 return -EFAULT; 1622 1623 /* Check for wrap and zero */ 1624 if (eeprom.offset + eeprom.len <= eeprom.offset) 1625 return -EINVAL; 1626 1627 /* Check for exceeding total eeprom len */ 1628 if (eeprom.offset + eeprom.len > total_len) 1629 return -EINVAL; 1630 1631 data = kzalloc(PAGE_SIZE, GFP_USER); 1632 if (!data) 1633 return -ENOMEM; 1634 1635 bytes_remaining = eeprom.len; 1636 while (bytes_remaining > 0) { 1637 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1638 1639 ret = getter(dev, &eeprom, data); 1640 if (ret) 1641 break; 1642 if (!eeprom.len) { 1643 ret = -EIO; 1644 break; 1645 } 1646 if (copy_to_user(userbuf, data, eeprom.len)) { 1647 ret = -EFAULT; 1648 break; 1649 } 1650 userbuf += eeprom.len; 1651 eeprom.offset += eeprom.len; 1652 bytes_remaining -= eeprom.len; 1653 } 1654 1655 eeprom.len = userbuf - (useraddr + sizeof(eeprom)); 1656 eeprom.offset -= eeprom.len; 1657 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) 1658 ret = -EFAULT; 1659 1660 kfree(data); 1661 return ret; 1662 } 1663 1664 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) 1665 { 1666 const struct ethtool_ops *ops = dev->ethtool_ops; 1667 1668 if (!ops->get_eeprom || !ops->get_eeprom_len || 1669 !ops->get_eeprom_len(dev)) 1670 return -EOPNOTSUPP; 1671 1672 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, 1673 ops->get_eeprom_len(dev)); 1674 } 1675 1676 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) 1677 { 1678 struct ethtool_eeprom eeprom; 1679 const struct ethtool_ops *ops = dev->ethtool_ops; 1680 void __user *userbuf = useraddr + sizeof(eeprom); 1681 u32 bytes_remaining; 1682 u8 *data; 1683 int ret = 0; 1684 1685 if (!ops->set_eeprom || !ops->get_eeprom_len || 1686 !ops->get_eeprom_len(dev)) 1687 return -EOPNOTSUPP; 1688 1689 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1690 return -EFAULT; 1691 1692 /* Check for wrap and zero */ 1693 if (eeprom.offset + eeprom.len <= eeprom.offset) 1694 return -EINVAL; 1695 1696 /* Check for exceeding total eeprom len */ 1697 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) 1698 return -EINVAL; 1699 1700 data = kzalloc(PAGE_SIZE, GFP_USER); 1701 if (!data) 1702 return -ENOMEM; 1703 1704 bytes_remaining = eeprom.len; 1705 while (bytes_remaining > 0) { 1706 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1707 1708 if (copy_from_user(data, userbuf, eeprom.len)) { 1709 ret = -EFAULT; 1710 break; 1711 } 1712 ret = ops->set_eeprom(dev, &eeprom, data); 1713 if (ret) 1714 break; 1715 userbuf += eeprom.len; 1716 eeprom.offset += eeprom.len; 1717 bytes_remaining -= eeprom.len; 1718 } 1719 1720 kfree(data); 1721 return ret; 1722 } 1723 1724 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, 1725 void __user *useraddr) 1726 { 1727 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 1728 struct kernel_ethtool_coalesce kernel_coalesce = {}; 1729 int ret; 1730 1731 if (!dev->ethtool_ops->get_coalesce) 1732 return -EOPNOTSUPP; 1733 1734 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 1735 NULL); 1736 if (ret) 1737 return ret; 1738 1739 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 1740 return -EFAULT; 1741 return 0; 1742 } 1743 1744 static bool 1745 ethtool_set_coalesce_supported(struct net_device *dev, 1746 struct ethtool_coalesce *coalesce) 1747 { 1748 u32 supported_params = dev->ethtool_ops->supported_coalesce_params; 1749 u32 nonzero_params = 0; 1750 1751 if (coalesce->rx_coalesce_usecs) 1752 nonzero_params |= ETHTOOL_COALESCE_RX_USECS; 1753 if (coalesce->rx_max_coalesced_frames) 1754 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; 1755 if (coalesce->rx_coalesce_usecs_irq) 1756 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; 1757 if (coalesce->rx_max_coalesced_frames_irq) 1758 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; 1759 if (coalesce->tx_coalesce_usecs) 1760 nonzero_params |= ETHTOOL_COALESCE_TX_USECS; 1761 if (coalesce->tx_max_coalesced_frames) 1762 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; 1763 if (coalesce->tx_coalesce_usecs_irq) 1764 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; 1765 if (coalesce->tx_max_coalesced_frames_irq) 1766 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; 1767 if (coalesce->stats_block_coalesce_usecs) 1768 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; 1769 if (coalesce->use_adaptive_rx_coalesce) 1770 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; 1771 if (coalesce->use_adaptive_tx_coalesce) 1772 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; 1773 if (coalesce->pkt_rate_low) 1774 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; 1775 if (coalesce->rx_coalesce_usecs_low) 1776 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; 1777 if (coalesce->rx_max_coalesced_frames_low) 1778 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; 1779 if (coalesce->tx_coalesce_usecs_low) 1780 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; 1781 if (coalesce->tx_max_coalesced_frames_low) 1782 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; 1783 if (coalesce->pkt_rate_high) 1784 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; 1785 if (coalesce->rx_coalesce_usecs_high) 1786 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; 1787 if (coalesce->rx_max_coalesced_frames_high) 1788 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; 1789 if (coalesce->tx_coalesce_usecs_high) 1790 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; 1791 if (coalesce->tx_max_coalesced_frames_high) 1792 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; 1793 if (coalesce->rate_sample_interval) 1794 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; 1795 1796 return (supported_params & nonzero_params) == nonzero_params; 1797 } 1798 1799 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, 1800 void __user *useraddr) 1801 { 1802 struct kernel_ethtool_coalesce kernel_coalesce = {}; 1803 struct ethtool_coalesce coalesce; 1804 int ret; 1805 1806 if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce) 1807 return -EOPNOTSUPP; 1808 1809 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 1810 NULL); 1811 if (ret) 1812 return ret; 1813 1814 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) 1815 return -EFAULT; 1816 1817 if (!ethtool_set_coalesce_supported(dev, &coalesce)) 1818 return -EOPNOTSUPP; 1819 1820 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, 1821 NULL); 1822 if (!ret) 1823 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL); 1824 return ret; 1825 } 1826 1827 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) 1828 { 1829 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; 1830 struct kernel_ethtool_ringparam kernel_ringparam = {}; 1831 1832 if (!dev->ethtool_ops->get_ringparam) 1833 return -EOPNOTSUPP; 1834 1835 dev->ethtool_ops->get_ringparam(dev, &ringparam, 1836 &kernel_ringparam, NULL); 1837 1838 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) 1839 return -EFAULT; 1840 return 0; 1841 } 1842 1843 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) 1844 { 1845 struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM }; 1846 struct kernel_ethtool_ringparam kernel_ringparam; 1847 int ret; 1848 1849 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) 1850 return -EOPNOTSUPP; 1851 1852 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) 1853 return -EFAULT; 1854 1855 dev->ethtool_ops->get_ringparam(dev, &max, &kernel_ringparam, NULL); 1856 1857 /* ensure new ring parameters are within the maximums */ 1858 if (ringparam.rx_pending > max.rx_max_pending || 1859 ringparam.rx_mini_pending > max.rx_mini_max_pending || 1860 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || 1861 ringparam.tx_pending > max.tx_max_pending) 1862 return -EINVAL; 1863 1864 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, 1865 &kernel_ringparam, NULL); 1866 if (!ret) 1867 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL); 1868 return ret; 1869 } 1870 1871 static noinline_for_stack int ethtool_get_channels(struct net_device *dev, 1872 void __user *useraddr) 1873 { 1874 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; 1875 1876 if (!dev->ethtool_ops->get_channels) 1877 return -EOPNOTSUPP; 1878 1879 dev->ethtool_ops->get_channels(dev, &channels); 1880 1881 if (copy_to_user(useraddr, &channels, sizeof(channels))) 1882 return -EFAULT; 1883 return 0; 1884 } 1885 1886 static noinline_for_stack int ethtool_set_channels(struct net_device *dev, 1887 void __user *useraddr) 1888 { 1889 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; 1890 u16 from_channel, to_channel; 1891 u64 max_rxnfc_in_use; 1892 u32 max_rxfh_in_use; 1893 unsigned int i; 1894 int ret; 1895 1896 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) 1897 return -EOPNOTSUPP; 1898 1899 if (copy_from_user(&channels, useraddr, sizeof(channels))) 1900 return -EFAULT; 1901 1902 dev->ethtool_ops->get_channels(dev, &curr); 1903 1904 if (channels.rx_count == curr.rx_count && 1905 channels.tx_count == curr.tx_count && 1906 channels.combined_count == curr.combined_count && 1907 channels.other_count == curr.other_count) 1908 return 0; 1909 1910 /* ensure new counts are within the maximums */ 1911 if (channels.rx_count > curr.max_rx || 1912 channels.tx_count > curr.max_tx || 1913 channels.combined_count > curr.max_combined || 1914 channels.other_count > curr.max_other) 1915 return -EINVAL; 1916 1917 /* ensure there is at least one RX and one TX channel */ 1918 if (!channels.combined_count && 1919 (!channels.rx_count || !channels.tx_count)) 1920 return -EINVAL; 1921 1922 /* ensure the new Rx count fits within the configured Rx flow 1923 * indirection table/rxnfc settings */ 1924 if (ethtool_get_max_rxnfc_channel(dev, &max_rxnfc_in_use)) 1925 max_rxnfc_in_use = 0; 1926 if (!netif_is_rxfh_configured(dev) || 1927 ethtool_get_max_rxfh_channel(dev, &max_rxfh_in_use)) 1928 max_rxfh_in_use = 0; 1929 if (channels.combined_count + channels.rx_count <= 1930 max_t(u64, max_rxnfc_in_use, max_rxfh_in_use)) 1931 return -EINVAL; 1932 1933 /* Disabling channels, query zero-copy AF_XDP sockets */ 1934 from_channel = channels.combined_count + 1935 min(channels.rx_count, channels.tx_count); 1936 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); 1937 for (i = from_channel; i < to_channel; i++) 1938 if (xsk_get_pool_from_qid(dev, i)) 1939 return -EINVAL; 1940 1941 ret = dev->ethtool_ops->set_channels(dev, &channels); 1942 if (!ret) 1943 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL); 1944 return ret; 1945 } 1946 1947 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) 1948 { 1949 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; 1950 1951 if (!dev->ethtool_ops->get_pauseparam) 1952 return -EOPNOTSUPP; 1953 1954 dev->ethtool_ops->get_pauseparam(dev, &pauseparam); 1955 1956 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) 1957 return -EFAULT; 1958 return 0; 1959 } 1960 1961 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) 1962 { 1963 struct ethtool_pauseparam pauseparam; 1964 int ret; 1965 1966 if (!dev->ethtool_ops->set_pauseparam) 1967 return -EOPNOTSUPP; 1968 1969 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) 1970 return -EFAULT; 1971 1972 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); 1973 if (!ret) 1974 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL); 1975 return ret; 1976 } 1977 1978 static int ethtool_self_test(struct net_device *dev, char __user *useraddr) 1979 { 1980 struct ethtool_test test; 1981 const struct ethtool_ops *ops = dev->ethtool_ops; 1982 u64 *data; 1983 int ret, test_len; 1984 1985 if (!ops->self_test || !ops->get_sset_count) 1986 return -EOPNOTSUPP; 1987 1988 test_len = ops->get_sset_count(dev, ETH_SS_TEST); 1989 if (test_len < 0) 1990 return test_len; 1991 WARN_ON(test_len == 0); 1992 1993 if (copy_from_user(&test, useraddr, sizeof(test))) 1994 return -EFAULT; 1995 1996 test.len = test_len; 1997 data = kcalloc(test_len, sizeof(u64), GFP_USER); 1998 if (!data) 1999 return -ENOMEM; 2000 2001 netif_testing_on(dev); 2002 ops->self_test(dev, &test, data); 2003 netif_testing_off(dev); 2004 2005 ret = -EFAULT; 2006 if (copy_to_user(useraddr, &test, sizeof(test))) 2007 goto out; 2008 useraddr += sizeof(test); 2009 if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) 2010 goto out; 2011 ret = 0; 2012 2013 out: 2014 kfree(data); 2015 return ret; 2016 } 2017 2018 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) 2019 { 2020 struct ethtool_gstrings gstrings; 2021 u8 *data; 2022 int ret; 2023 2024 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) 2025 return -EFAULT; 2026 2027 ret = __ethtool_get_sset_count(dev, gstrings.string_set); 2028 if (ret < 0) 2029 return ret; 2030 if (ret > S32_MAX / ETH_GSTRING_LEN) 2031 return -ENOMEM; 2032 WARN_ON_ONCE(!ret); 2033 2034 gstrings.len = ret; 2035 2036 if (gstrings.len) { 2037 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); 2038 if (!data) 2039 return -ENOMEM; 2040 2041 __ethtool_get_strings(dev, gstrings.string_set, data); 2042 } else { 2043 data = NULL; 2044 } 2045 2046 ret = -EFAULT; 2047 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) 2048 goto out; 2049 useraddr += sizeof(gstrings); 2050 if (gstrings.len && 2051 copy_to_user(useraddr, data, 2052 array_size(gstrings.len, ETH_GSTRING_LEN))) 2053 goto out; 2054 ret = 0; 2055 2056 out: 2057 vfree(data); 2058 return ret; 2059 } 2060 2061 __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) 2062 { 2063 va_list args; 2064 2065 va_start(args, fmt); 2066 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); 2067 va_end(args); 2068 2069 *data += ETH_GSTRING_LEN; 2070 } 2071 EXPORT_SYMBOL(ethtool_sprintf); 2072 2073 void ethtool_puts(u8 **data, const char *str) 2074 { 2075 strscpy(*data, str, ETH_GSTRING_LEN); 2076 *data += ETH_GSTRING_LEN; 2077 } 2078 EXPORT_SYMBOL(ethtool_puts); 2079 2080 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) 2081 { 2082 struct ethtool_value id; 2083 static bool busy; 2084 const struct ethtool_ops *ops = dev->ethtool_ops; 2085 netdevice_tracker dev_tracker; 2086 int rc; 2087 2088 if (!ops->set_phys_id) 2089 return -EOPNOTSUPP; 2090 2091 if (busy) 2092 return -EBUSY; 2093 2094 if (copy_from_user(&id, useraddr, sizeof(id))) 2095 return -EFAULT; 2096 2097 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); 2098 if (rc < 0) 2099 return rc; 2100 2101 /* Drop the RTNL lock while waiting, but prevent reentry or 2102 * removal of the device. 2103 */ 2104 busy = true; 2105 netdev_hold(dev, &dev_tracker, GFP_KERNEL); 2106 rtnl_unlock(); 2107 2108 if (rc == 0) { 2109 /* Driver will handle this itself */ 2110 schedule_timeout_interruptible( 2111 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); 2112 } else { 2113 /* Driver expects to be called at twice the frequency in rc */ 2114 int n = rc * 2, interval = HZ / n; 2115 u64 count = mul_u32_u32(n, id.data); 2116 u64 i = 0; 2117 2118 do { 2119 rtnl_lock(); 2120 rc = ops->set_phys_id(dev, 2121 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); 2122 rtnl_unlock(); 2123 if (rc) 2124 break; 2125 schedule_timeout_interruptible(interval); 2126 } while (!signal_pending(current) && (!id.data || i < count)); 2127 } 2128 2129 rtnl_lock(); 2130 netdev_put(dev, &dev_tracker); 2131 busy = false; 2132 2133 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); 2134 return rc; 2135 } 2136 2137 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) 2138 { 2139 struct ethtool_stats stats; 2140 const struct ethtool_ops *ops = dev->ethtool_ops; 2141 u64 *data; 2142 int ret, n_stats; 2143 2144 if (!ops->get_ethtool_stats || !ops->get_sset_count) 2145 return -EOPNOTSUPP; 2146 2147 n_stats = ops->get_sset_count(dev, ETH_SS_STATS); 2148 if (n_stats < 0) 2149 return n_stats; 2150 if (n_stats > S32_MAX / sizeof(u64)) 2151 return -ENOMEM; 2152 WARN_ON_ONCE(!n_stats); 2153 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2154 return -EFAULT; 2155 2156 stats.n_stats = n_stats; 2157 2158 if (n_stats) { 2159 data = vzalloc(array_size(n_stats, sizeof(u64))); 2160 if (!data) 2161 return -ENOMEM; 2162 ops->get_ethtool_stats(dev, &stats, data); 2163 } else { 2164 data = NULL; 2165 } 2166 2167 ret = -EFAULT; 2168 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2169 goto out; 2170 useraddr += sizeof(stats); 2171 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) 2172 goto out; 2173 ret = 0; 2174 2175 out: 2176 vfree(data); 2177 return ret; 2178 } 2179 2180 static int ethtool_vzalloc_stats_array(int n_stats, u64 **data) 2181 { 2182 if (n_stats < 0) 2183 return n_stats; 2184 if (n_stats > S32_MAX / sizeof(u64)) 2185 return -ENOMEM; 2186 if (WARN_ON_ONCE(!n_stats)) 2187 return -EOPNOTSUPP; 2188 2189 *data = vzalloc(array_size(n_stats, sizeof(u64))); 2190 if (!*data) 2191 return -ENOMEM; 2192 2193 return 0; 2194 } 2195 2196 static int ethtool_get_phy_stats_phydev(struct phy_device *phydev, 2197 struct ethtool_stats *stats, 2198 u64 **data) 2199 { 2200 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 2201 int n_stats, ret; 2202 2203 if (!phy_ops || !phy_ops->get_sset_count || !phy_ops->get_stats) 2204 return -EOPNOTSUPP; 2205 2206 n_stats = phy_ops->get_sset_count(phydev); 2207 2208 ret = ethtool_vzalloc_stats_array(n_stats, data); 2209 if (ret) 2210 return ret; 2211 2212 stats->n_stats = n_stats; 2213 return phy_ops->get_stats(phydev, stats, *data); 2214 } 2215 2216 static int ethtool_get_phy_stats_ethtool(struct net_device *dev, 2217 struct ethtool_stats *stats, 2218 u64 **data) 2219 { 2220 const struct ethtool_ops *ops = dev->ethtool_ops; 2221 int n_stats, ret; 2222 2223 if (!ops || !ops->get_sset_count || !ops->get_ethtool_phy_stats) 2224 return -EOPNOTSUPP; 2225 2226 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); 2227 2228 ret = ethtool_vzalloc_stats_array(n_stats, data); 2229 if (ret) 2230 return ret; 2231 2232 stats->n_stats = n_stats; 2233 ops->get_ethtool_phy_stats(dev, stats, *data); 2234 2235 return 0; 2236 } 2237 2238 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) 2239 { 2240 struct phy_device *phydev = dev->phydev; 2241 struct ethtool_stats stats; 2242 u64 *data = NULL; 2243 int ret = -EOPNOTSUPP; 2244 2245 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2246 return -EFAULT; 2247 2248 if (phydev) 2249 ret = ethtool_get_phy_stats_phydev(phydev, &stats, &data); 2250 2251 if (ret == -EOPNOTSUPP) 2252 ret = ethtool_get_phy_stats_ethtool(dev, &stats, &data); 2253 2254 if (ret) 2255 goto out; 2256 2257 if (copy_to_user(useraddr, &stats, sizeof(stats))) { 2258 ret = -EFAULT; 2259 goto out; 2260 } 2261 2262 useraddr += sizeof(stats); 2263 if (copy_to_user(useraddr, data, array_size(stats.n_stats, sizeof(u64)))) 2264 ret = -EFAULT; 2265 2266 out: 2267 vfree(data); 2268 return ret; 2269 } 2270 2271 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) 2272 { 2273 struct ethtool_perm_addr epaddr; 2274 2275 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) 2276 return -EFAULT; 2277 2278 if (epaddr.size < dev->addr_len) 2279 return -ETOOSMALL; 2280 epaddr.size = dev->addr_len; 2281 2282 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) 2283 return -EFAULT; 2284 useraddr += sizeof(epaddr); 2285 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) 2286 return -EFAULT; 2287 return 0; 2288 } 2289 2290 static int ethtool_get_value(struct net_device *dev, char __user *useraddr, 2291 u32 cmd, u32 (*actor)(struct net_device *)) 2292 { 2293 struct ethtool_value edata = { .cmd = cmd }; 2294 2295 if (!actor) 2296 return -EOPNOTSUPP; 2297 2298 edata.data = actor(dev); 2299 2300 if (copy_to_user(useraddr, &edata, sizeof(edata))) 2301 return -EFAULT; 2302 return 0; 2303 } 2304 2305 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, 2306 void (*actor)(struct net_device *, u32)) 2307 { 2308 struct ethtool_value edata; 2309 2310 if (!actor) 2311 return -EOPNOTSUPP; 2312 2313 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2314 return -EFAULT; 2315 2316 actor(dev, edata.data); 2317 return 0; 2318 } 2319 2320 static int ethtool_set_value(struct net_device *dev, char __user *useraddr, 2321 int (*actor)(struct net_device *, u32)) 2322 { 2323 struct ethtool_value edata; 2324 2325 if (!actor) 2326 return -EOPNOTSUPP; 2327 2328 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2329 return -EFAULT; 2330 2331 return actor(dev, edata.data); 2332 } 2333 2334 static int 2335 ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) 2336 { 2337 if (!dev->ethtool_ops->flash_device) { 2338 req->devlink = netdev_to_devlink_get(dev); 2339 return 0; 2340 } 2341 2342 return dev->ethtool_ops->flash_device(dev, &req->efl); 2343 } 2344 2345 static int ethtool_set_dump(struct net_device *dev, 2346 void __user *useraddr) 2347 { 2348 struct ethtool_dump dump; 2349 2350 if (!dev->ethtool_ops->set_dump) 2351 return -EOPNOTSUPP; 2352 2353 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2354 return -EFAULT; 2355 2356 return dev->ethtool_ops->set_dump(dev, &dump); 2357 } 2358 2359 static int ethtool_get_dump_flag(struct net_device *dev, 2360 void __user *useraddr) 2361 { 2362 int ret; 2363 struct ethtool_dump dump; 2364 const struct ethtool_ops *ops = dev->ethtool_ops; 2365 2366 if (!ops->get_dump_flag) 2367 return -EOPNOTSUPP; 2368 2369 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2370 return -EFAULT; 2371 2372 ret = ops->get_dump_flag(dev, &dump); 2373 if (ret) 2374 return ret; 2375 2376 if (copy_to_user(useraddr, &dump, sizeof(dump))) 2377 return -EFAULT; 2378 return 0; 2379 } 2380 2381 static int ethtool_get_dump_data(struct net_device *dev, 2382 void __user *useraddr) 2383 { 2384 int ret; 2385 __u32 len; 2386 struct ethtool_dump dump, tmp; 2387 const struct ethtool_ops *ops = dev->ethtool_ops; 2388 void *data = NULL; 2389 2390 if (!ops->get_dump_data || !ops->get_dump_flag) 2391 return -EOPNOTSUPP; 2392 2393 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2394 return -EFAULT; 2395 2396 memset(&tmp, 0, sizeof(tmp)); 2397 tmp.cmd = ETHTOOL_GET_DUMP_FLAG; 2398 ret = ops->get_dump_flag(dev, &tmp); 2399 if (ret) 2400 return ret; 2401 2402 len = min(tmp.len, dump.len); 2403 if (!len) 2404 return -EFAULT; 2405 2406 /* Don't ever let the driver think there's more space available 2407 * than it requested with .get_dump_flag(). 2408 */ 2409 dump.len = len; 2410 2411 /* Always allocate enough space to hold the whole thing so that the 2412 * driver does not need to check the length and bother with partial 2413 * dumping. 2414 */ 2415 data = vzalloc(tmp.len); 2416 if (!data) 2417 return -ENOMEM; 2418 ret = ops->get_dump_data(dev, &dump, data); 2419 if (ret) 2420 goto out; 2421 2422 /* There are two sane possibilities: 2423 * 1. The driver's .get_dump_data() does not touch dump.len. 2424 * 2. Or it may set dump.len to how much it really writes, which 2425 * should be tmp.len (or len if it can do a partial dump). 2426 * In any case respond to userspace with the actual length of data 2427 * it's receiving. 2428 */ 2429 WARN_ON(dump.len != len && dump.len != tmp.len); 2430 dump.len = len; 2431 2432 if (copy_to_user(useraddr, &dump, sizeof(dump))) { 2433 ret = -EFAULT; 2434 goto out; 2435 } 2436 useraddr += offsetof(struct ethtool_dump, data); 2437 if (copy_to_user(useraddr, data, len)) 2438 ret = -EFAULT; 2439 out: 2440 vfree(data); 2441 return ret; 2442 } 2443 2444 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) 2445 { 2446 struct ethtool_ts_info info; 2447 int err; 2448 2449 err = __ethtool_get_ts_info(dev, &info); 2450 if (err) 2451 return err; 2452 2453 if (copy_to_user(useraddr, &info, sizeof(info))) 2454 return -EFAULT; 2455 2456 return 0; 2457 } 2458 2459 int ethtool_get_module_info_call(struct net_device *dev, 2460 struct ethtool_modinfo *modinfo) 2461 { 2462 const struct ethtool_ops *ops = dev->ethtool_ops; 2463 struct phy_device *phydev = dev->phydev; 2464 2465 if (dev->sfp_bus) 2466 return sfp_get_module_info(dev->sfp_bus, modinfo); 2467 2468 if (phydev && phydev->drv && phydev->drv->module_info) 2469 return phydev->drv->module_info(phydev, modinfo); 2470 2471 if (ops->get_module_info) 2472 return ops->get_module_info(dev, modinfo); 2473 2474 return -EOPNOTSUPP; 2475 } 2476 2477 static int ethtool_get_module_info(struct net_device *dev, 2478 void __user *useraddr) 2479 { 2480 int ret; 2481 struct ethtool_modinfo modinfo; 2482 2483 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) 2484 return -EFAULT; 2485 2486 ret = ethtool_get_module_info_call(dev, &modinfo); 2487 if (ret) 2488 return ret; 2489 2490 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) 2491 return -EFAULT; 2492 2493 return 0; 2494 } 2495 2496 int ethtool_get_module_eeprom_call(struct net_device *dev, 2497 struct ethtool_eeprom *ee, u8 *data) 2498 { 2499 const struct ethtool_ops *ops = dev->ethtool_ops; 2500 struct phy_device *phydev = dev->phydev; 2501 2502 if (dev->sfp_bus) 2503 return sfp_get_module_eeprom(dev->sfp_bus, ee, data); 2504 2505 if (phydev && phydev->drv && phydev->drv->module_eeprom) 2506 return phydev->drv->module_eeprom(phydev, ee, data); 2507 2508 if (ops->get_module_eeprom) 2509 return ops->get_module_eeprom(dev, ee, data); 2510 2511 return -EOPNOTSUPP; 2512 } 2513 2514 static int ethtool_get_module_eeprom(struct net_device *dev, 2515 void __user *useraddr) 2516 { 2517 int ret; 2518 struct ethtool_modinfo modinfo; 2519 2520 ret = ethtool_get_module_info_call(dev, &modinfo); 2521 if (ret) 2522 return ret; 2523 2524 return ethtool_get_any_eeprom(dev, useraddr, 2525 ethtool_get_module_eeprom_call, 2526 modinfo.eeprom_len); 2527 } 2528 2529 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) 2530 { 2531 switch (tuna->id) { 2532 case ETHTOOL_RX_COPYBREAK: 2533 case ETHTOOL_TX_COPYBREAK: 2534 case ETHTOOL_TX_COPYBREAK_BUF_SIZE: 2535 if (tuna->len != sizeof(u32) || 2536 tuna->type_id != ETHTOOL_TUNABLE_U32) 2537 return -EINVAL; 2538 break; 2539 case ETHTOOL_PFC_PREVENTION_TOUT: 2540 if (tuna->len != sizeof(u16) || 2541 tuna->type_id != ETHTOOL_TUNABLE_U16) 2542 return -EINVAL; 2543 break; 2544 default: 2545 return -EINVAL; 2546 } 2547 2548 return 0; 2549 } 2550 2551 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) 2552 { 2553 int ret; 2554 struct ethtool_tunable tuna; 2555 const struct ethtool_ops *ops = dev->ethtool_ops; 2556 void *data; 2557 2558 if (!ops->get_tunable) 2559 return -EOPNOTSUPP; 2560 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2561 return -EFAULT; 2562 ret = ethtool_tunable_valid(&tuna); 2563 if (ret) 2564 return ret; 2565 data = kzalloc(tuna.len, GFP_USER); 2566 if (!data) 2567 return -ENOMEM; 2568 ret = ops->get_tunable(dev, &tuna, data); 2569 if (ret) 2570 goto out; 2571 useraddr += sizeof(tuna); 2572 ret = -EFAULT; 2573 if (copy_to_user(useraddr, data, tuna.len)) 2574 goto out; 2575 ret = 0; 2576 2577 out: 2578 kfree(data); 2579 return ret; 2580 } 2581 2582 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) 2583 { 2584 int ret; 2585 struct ethtool_tunable tuna; 2586 const struct ethtool_ops *ops = dev->ethtool_ops; 2587 void *data; 2588 2589 if (!ops->set_tunable) 2590 return -EOPNOTSUPP; 2591 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2592 return -EFAULT; 2593 ret = ethtool_tunable_valid(&tuna); 2594 if (ret) 2595 return ret; 2596 useraddr += sizeof(tuna); 2597 data = memdup_user(useraddr, tuna.len); 2598 if (IS_ERR(data)) 2599 return PTR_ERR(data); 2600 ret = ops->set_tunable(dev, &tuna, data); 2601 2602 kfree(data); 2603 return ret; 2604 } 2605 2606 static noinline_for_stack int 2607 ethtool_get_per_queue_coalesce(struct net_device *dev, 2608 void __user *useraddr, 2609 struct ethtool_per_queue_op *per_queue_opt) 2610 { 2611 u32 bit; 2612 int ret; 2613 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2614 2615 if (!dev->ethtool_ops->get_per_queue_coalesce) 2616 return -EOPNOTSUPP; 2617 2618 useraddr += sizeof(*per_queue_opt); 2619 2620 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, 2621 MAX_NUM_QUEUE); 2622 2623 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2624 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2625 2626 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); 2627 if (ret != 0) 2628 return ret; 2629 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2630 return -EFAULT; 2631 useraddr += sizeof(coalesce); 2632 } 2633 2634 return 0; 2635 } 2636 2637 static noinline_for_stack int 2638 ethtool_set_per_queue_coalesce(struct net_device *dev, 2639 void __user *useraddr, 2640 struct ethtool_per_queue_op *per_queue_opt) 2641 { 2642 u32 bit; 2643 int i, ret = 0; 2644 int n_queue; 2645 struct ethtool_coalesce *backup = NULL, *tmp = NULL; 2646 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2647 2648 if ((!dev->ethtool_ops->set_per_queue_coalesce) || 2649 (!dev->ethtool_ops->get_per_queue_coalesce)) 2650 return -EOPNOTSUPP; 2651 2652 useraddr += sizeof(*per_queue_opt); 2653 2654 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); 2655 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); 2656 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); 2657 if (!backup) 2658 return -ENOMEM; 2659 2660 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2661 struct ethtool_coalesce coalesce; 2662 2663 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); 2664 if (ret != 0) 2665 goto roll_back; 2666 2667 tmp++; 2668 2669 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { 2670 ret = -EFAULT; 2671 goto roll_back; 2672 } 2673 2674 if (!ethtool_set_coalesce_supported(dev, &coalesce)) { 2675 ret = -EOPNOTSUPP; 2676 goto roll_back; 2677 } 2678 2679 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); 2680 if (ret != 0) 2681 goto roll_back; 2682 2683 useraddr += sizeof(coalesce); 2684 } 2685 2686 roll_back: 2687 if (ret != 0) { 2688 tmp = backup; 2689 for_each_set_bit(i, queue_mask, bit) { 2690 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); 2691 tmp++; 2692 } 2693 } 2694 kfree(backup); 2695 2696 return ret; 2697 } 2698 2699 static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, 2700 void __user *useraddr, u32 sub_cmd) 2701 { 2702 struct ethtool_per_queue_op per_queue_opt; 2703 2704 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) 2705 return -EFAULT; 2706 2707 if (per_queue_opt.sub_command != sub_cmd) 2708 return -EINVAL; 2709 2710 switch (per_queue_opt.sub_command) { 2711 case ETHTOOL_GCOALESCE: 2712 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2713 case ETHTOOL_SCOALESCE: 2714 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2715 default: 2716 return -EOPNOTSUPP; 2717 } 2718 } 2719 2720 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) 2721 { 2722 switch (tuna->id) { 2723 case ETHTOOL_PHY_DOWNSHIFT: 2724 case ETHTOOL_PHY_FAST_LINK_DOWN: 2725 if (tuna->len != sizeof(u8) || 2726 tuna->type_id != ETHTOOL_TUNABLE_U8) 2727 return -EINVAL; 2728 break; 2729 case ETHTOOL_PHY_EDPD: 2730 if (tuna->len != sizeof(u16) || 2731 tuna->type_id != ETHTOOL_TUNABLE_U16) 2732 return -EINVAL; 2733 break; 2734 default: 2735 return -EINVAL; 2736 } 2737 2738 return 0; 2739 } 2740 2741 static int get_phy_tunable(struct net_device *dev, void __user *useraddr) 2742 { 2743 struct phy_device *phydev = dev->phydev; 2744 struct ethtool_tunable tuna; 2745 bool phy_drv_tunable; 2746 void *data; 2747 int ret; 2748 2749 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 2750 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) 2751 return -EOPNOTSUPP; 2752 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2753 return -EFAULT; 2754 ret = ethtool_phy_tunable_valid(&tuna); 2755 if (ret) 2756 return ret; 2757 data = kzalloc(tuna.len, GFP_USER); 2758 if (!data) 2759 return -ENOMEM; 2760 if (phy_drv_tunable) { 2761 mutex_lock(&phydev->lock); 2762 ret = phydev->drv->get_tunable(phydev, &tuna, data); 2763 mutex_unlock(&phydev->lock); 2764 } else { 2765 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); 2766 } 2767 if (ret) 2768 goto out; 2769 useraddr += sizeof(tuna); 2770 ret = -EFAULT; 2771 if (copy_to_user(useraddr, data, tuna.len)) 2772 goto out; 2773 ret = 0; 2774 2775 out: 2776 kfree(data); 2777 return ret; 2778 } 2779 2780 static int set_phy_tunable(struct net_device *dev, void __user *useraddr) 2781 { 2782 struct phy_device *phydev = dev->phydev; 2783 struct ethtool_tunable tuna; 2784 bool phy_drv_tunable; 2785 void *data; 2786 int ret; 2787 2788 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 2789 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) 2790 return -EOPNOTSUPP; 2791 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2792 return -EFAULT; 2793 ret = ethtool_phy_tunable_valid(&tuna); 2794 if (ret) 2795 return ret; 2796 useraddr += sizeof(tuna); 2797 data = memdup_user(useraddr, tuna.len); 2798 if (IS_ERR(data)) 2799 return PTR_ERR(data); 2800 if (phy_drv_tunable) { 2801 mutex_lock(&phydev->lock); 2802 ret = phydev->drv->set_tunable(phydev, &tuna, data); 2803 mutex_unlock(&phydev->lock); 2804 } else { 2805 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); 2806 } 2807 2808 kfree(data); 2809 return ret; 2810 } 2811 2812 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) 2813 { 2814 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; 2815 int rc; 2816 2817 if (!dev->ethtool_ops->get_fecparam) 2818 return -EOPNOTSUPP; 2819 2820 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); 2821 if (rc) 2822 return rc; 2823 2824 if (WARN_ON_ONCE(fecparam.reserved)) 2825 fecparam.reserved = 0; 2826 2827 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) 2828 return -EFAULT; 2829 return 0; 2830 } 2831 2832 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) 2833 { 2834 struct ethtool_fecparam fecparam; 2835 2836 if (!dev->ethtool_ops->set_fecparam) 2837 return -EOPNOTSUPP; 2838 2839 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) 2840 return -EFAULT; 2841 2842 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) 2843 return -EINVAL; 2844 2845 fecparam.active_fec = 0; 2846 fecparam.reserved = 0; 2847 2848 return dev->ethtool_ops->set_fecparam(dev, &fecparam); 2849 } 2850 2851 /* The main entry point in this file. Called from net/core/dev_ioctl.c */ 2852 2853 static int 2854 __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, 2855 u32 ethcmd, struct ethtool_devlink_compat *devlink_state) 2856 { 2857 struct net_device *dev; 2858 u32 sub_cmd; 2859 int rc; 2860 netdev_features_t old_features; 2861 2862 dev = __dev_get_by_name(net, ifr->ifr_name); 2863 if (!dev) 2864 return -ENODEV; 2865 2866 if (ethcmd == ETHTOOL_PERQUEUE) { 2867 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) 2868 return -EFAULT; 2869 } else { 2870 sub_cmd = ethcmd; 2871 } 2872 /* Allow some commands to be done by anyone */ 2873 switch (sub_cmd) { 2874 case ETHTOOL_GSET: 2875 case ETHTOOL_GDRVINFO: 2876 case ETHTOOL_GMSGLVL: 2877 case ETHTOOL_GLINK: 2878 case ETHTOOL_GCOALESCE: 2879 case ETHTOOL_GRINGPARAM: 2880 case ETHTOOL_GPAUSEPARAM: 2881 case ETHTOOL_GRXCSUM: 2882 case ETHTOOL_GTXCSUM: 2883 case ETHTOOL_GSG: 2884 case ETHTOOL_GSSET_INFO: 2885 case ETHTOOL_GSTRINGS: 2886 case ETHTOOL_GSTATS: 2887 case ETHTOOL_GPHYSTATS: 2888 case ETHTOOL_GTSO: 2889 case ETHTOOL_GPERMADDR: 2890 case ETHTOOL_GUFO: 2891 case ETHTOOL_GGSO: 2892 case ETHTOOL_GGRO: 2893 case ETHTOOL_GFLAGS: 2894 case ETHTOOL_GPFLAGS: 2895 case ETHTOOL_GRXFH: 2896 case ETHTOOL_GRXRINGS: 2897 case ETHTOOL_GRXCLSRLCNT: 2898 case ETHTOOL_GRXCLSRULE: 2899 case ETHTOOL_GRXCLSRLALL: 2900 case ETHTOOL_GRXFHINDIR: 2901 case ETHTOOL_GRSSH: 2902 case ETHTOOL_GFEATURES: 2903 case ETHTOOL_GCHANNELS: 2904 case ETHTOOL_GET_TS_INFO: 2905 case ETHTOOL_GEEE: 2906 case ETHTOOL_GTUNABLE: 2907 case ETHTOOL_PHY_GTUNABLE: 2908 case ETHTOOL_GLINKSETTINGS: 2909 case ETHTOOL_GFECPARAM: 2910 break; 2911 default: 2912 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 2913 return -EPERM; 2914 } 2915 2916 if (dev->dev.parent) 2917 pm_runtime_get_sync(dev->dev.parent); 2918 2919 if (!netif_device_present(dev)) { 2920 rc = -ENODEV; 2921 goto out; 2922 } 2923 2924 if (dev->ethtool_ops->begin) { 2925 rc = dev->ethtool_ops->begin(dev); 2926 if (rc < 0) 2927 goto out; 2928 } 2929 old_features = dev->features; 2930 2931 switch (ethcmd) { 2932 case ETHTOOL_GSET: 2933 rc = ethtool_get_settings(dev, useraddr); 2934 break; 2935 case ETHTOOL_SSET: 2936 rc = ethtool_set_settings(dev, useraddr); 2937 break; 2938 case ETHTOOL_GDRVINFO: 2939 rc = ethtool_get_drvinfo(dev, devlink_state); 2940 break; 2941 case ETHTOOL_GREGS: 2942 rc = ethtool_get_regs(dev, useraddr); 2943 break; 2944 case ETHTOOL_GWOL: 2945 rc = ethtool_get_wol(dev, useraddr); 2946 break; 2947 case ETHTOOL_SWOL: 2948 rc = ethtool_set_wol(dev, useraddr); 2949 break; 2950 case ETHTOOL_GMSGLVL: 2951 rc = ethtool_get_value(dev, useraddr, ethcmd, 2952 dev->ethtool_ops->get_msglevel); 2953 break; 2954 case ETHTOOL_SMSGLVL: 2955 rc = ethtool_set_value_void(dev, useraddr, 2956 dev->ethtool_ops->set_msglevel); 2957 if (!rc) 2958 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL); 2959 break; 2960 case ETHTOOL_GEEE: 2961 rc = ethtool_get_eee(dev, useraddr); 2962 break; 2963 case ETHTOOL_SEEE: 2964 rc = ethtool_set_eee(dev, useraddr); 2965 break; 2966 case ETHTOOL_NWAY_RST: 2967 rc = ethtool_nway_reset(dev); 2968 break; 2969 case ETHTOOL_GLINK: 2970 rc = ethtool_get_link(dev, useraddr); 2971 break; 2972 case ETHTOOL_GEEPROM: 2973 rc = ethtool_get_eeprom(dev, useraddr); 2974 break; 2975 case ETHTOOL_SEEPROM: 2976 rc = ethtool_set_eeprom(dev, useraddr); 2977 break; 2978 case ETHTOOL_GCOALESCE: 2979 rc = ethtool_get_coalesce(dev, useraddr); 2980 break; 2981 case ETHTOOL_SCOALESCE: 2982 rc = ethtool_set_coalesce(dev, useraddr); 2983 break; 2984 case ETHTOOL_GRINGPARAM: 2985 rc = ethtool_get_ringparam(dev, useraddr); 2986 break; 2987 case ETHTOOL_SRINGPARAM: 2988 rc = ethtool_set_ringparam(dev, useraddr); 2989 break; 2990 case ETHTOOL_GPAUSEPARAM: 2991 rc = ethtool_get_pauseparam(dev, useraddr); 2992 break; 2993 case ETHTOOL_SPAUSEPARAM: 2994 rc = ethtool_set_pauseparam(dev, useraddr); 2995 break; 2996 case ETHTOOL_TEST: 2997 rc = ethtool_self_test(dev, useraddr); 2998 break; 2999 case ETHTOOL_GSTRINGS: 3000 rc = ethtool_get_strings(dev, useraddr); 3001 break; 3002 case ETHTOOL_PHYS_ID: 3003 rc = ethtool_phys_id(dev, useraddr); 3004 break; 3005 case ETHTOOL_GSTATS: 3006 rc = ethtool_get_stats(dev, useraddr); 3007 break; 3008 case ETHTOOL_GPERMADDR: 3009 rc = ethtool_get_perm_addr(dev, useraddr); 3010 break; 3011 case ETHTOOL_GFLAGS: 3012 rc = ethtool_get_value(dev, useraddr, ethcmd, 3013 __ethtool_get_flags); 3014 break; 3015 case ETHTOOL_SFLAGS: 3016 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); 3017 break; 3018 case ETHTOOL_GPFLAGS: 3019 rc = ethtool_get_value(dev, useraddr, ethcmd, 3020 dev->ethtool_ops->get_priv_flags); 3021 if (!rc) 3022 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL); 3023 break; 3024 case ETHTOOL_SPFLAGS: 3025 rc = ethtool_set_value(dev, useraddr, 3026 dev->ethtool_ops->set_priv_flags); 3027 break; 3028 case ETHTOOL_GRXFH: 3029 case ETHTOOL_GRXRINGS: 3030 case ETHTOOL_GRXCLSRLCNT: 3031 case ETHTOOL_GRXCLSRULE: 3032 case ETHTOOL_GRXCLSRLALL: 3033 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); 3034 break; 3035 case ETHTOOL_SRXFH: 3036 case ETHTOOL_SRXCLSRLDEL: 3037 case ETHTOOL_SRXCLSRLINS: 3038 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); 3039 break; 3040 case ETHTOOL_FLASHDEV: 3041 rc = ethtool_flash_device(dev, devlink_state); 3042 break; 3043 case ETHTOOL_RESET: 3044 rc = ethtool_reset(dev, useraddr); 3045 break; 3046 case ETHTOOL_GSSET_INFO: 3047 rc = ethtool_get_sset_info(dev, useraddr); 3048 break; 3049 case ETHTOOL_GRXFHINDIR: 3050 rc = ethtool_get_rxfh_indir(dev, useraddr); 3051 break; 3052 case ETHTOOL_SRXFHINDIR: 3053 rc = ethtool_set_rxfh_indir(dev, useraddr); 3054 break; 3055 case ETHTOOL_GRSSH: 3056 rc = ethtool_get_rxfh(dev, useraddr); 3057 break; 3058 case ETHTOOL_SRSSH: 3059 rc = ethtool_set_rxfh(dev, useraddr); 3060 break; 3061 case ETHTOOL_GFEATURES: 3062 rc = ethtool_get_features(dev, useraddr); 3063 break; 3064 case ETHTOOL_SFEATURES: 3065 rc = ethtool_set_features(dev, useraddr); 3066 break; 3067 case ETHTOOL_GTXCSUM: 3068 case ETHTOOL_GRXCSUM: 3069 case ETHTOOL_GSG: 3070 case ETHTOOL_GTSO: 3071 case ETHTOOL_GGSO: 3072 case ETHTOOL_GGRO: 3073 rc = ethtool_get_one_feature(dev, useraddr, ethcmd); 3074 break; 3075 case ETHTOOL_STXCSUM: 3076 case ETHTOOL_SRXCSUM: 3077 case ETHTOOL_SSG: 3078 case ETHTOOL_STSO: 3079 case ETHTOOL_SGSO: 3080 case ETHTOOL_SGRO: 3081 rc = ethtool_set_one_feature(dev, useraddr, ethcmd); 3082 break; 3083 case ETHTOOL_GCHANNELS: 3084 rc = ethtool_get_channels(dev, useraddr); 3085 break; 3086 case ETHTOOL_SCHANNELS: 3087 rc = ethtool_set_channels(dev, useraddr); 3088 break; 3089 case ETHTOOL_SET_DUMP: 3090 rc = ethtool_set_dump(dev, useraddr); 3091 break; 3092 case ETHTOOL_GET_DUMP_FLAG: 3093 rc = ethtool_get_dump_flag(dev, useraddr); 3094 break; 3095 case ETHTOOL_GET_DUMP_DATA: 3096 rc = ethtool_get_dump_data(dev, useraddr); 3097 break; 3098 case ETHTOOL_GET_TS_INFO: 3099 rc = ethtool_get_ts_info(dev, useraddr); 3100 break; 3101 case ETHTOOL_GMODULEINFO: 3102 rc = ethtool_get_module_info(dev, useraddr); 3103 break; 3104 case ETHTOOL_GMODULEEEPROM: 3105 rc = ethtool_get_module_eeprom(dev, useraddr); 3106 break; 3107 case ETHTOOL_GTUNABLE: 3108 rc = ethtool_get_tunable(dev, useraddr); 3109 break; 3110 case ETHTOOL_STUNABLE: 3111 rc = ethtool_set_tunable(dev, useraddr); 3112 break; 3113 case ETHTOOL_GPHYSTATS: 3114 rc = ethtool_get_phy_stats(dev, useraddr); 3115 break; 3116 case ETHTOOL_PERQUEUE: 3117 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); 3118 break; 3119 case ETHTOOL_GLINKSETTINGS: 3120 rc = ethtool_get_link_ksettings(dev, useraddr); 3121 break; 3122 case ETHTOOL_SLINKSETTINGS: 3123 rc = ethtool_set_link_ksettings(dev, useraddr); 3124 break; 3125 case ETHTOOL_PHY_GTUNABLE: 3126 rc = get_phy_tunable(dev, useraddr); 3127 break; 3128 case ETHTOOL_PHY_STUNABLE: 3129 rc = set_phy_tunable(dev, useraddr); 3130 break; 3131 case ETHTOOL_GFECPARAM: 3132 rc = ethtool_get_fecparam(dev, useraddr); 3133 break; 3134 case ETHTOOL_SFECPARAM: 3135 rc = ethtool_set_fecparam(dev, useraddr); 3136 break; 3137 default: 3138 rc = -EOPNOTSUPP; 3139 } 3140 3141 if (dev->ethtool_ops->complete) 3142 dev->ethtool_ops->complete(dev); 3143 3144 if (old_features != dev->features) 3145 netdev_features_change(dev); 3146 out: 3147 if (dev->dev.parent) 3148 pm_runtime_put(dev->dev.parent); 3149 3150 return rc; 3151 } 3152 3153 int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) 3154 { 3155 struct ethtool_devlink_compat *state; 3156 u32 ethcmd; 3157 int rc; 3158 3159 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) 3160 return -EFAULT; 3161 3162 state = kzalloc(sizeof(*state), GFP_KERNEL); 3163 if (!state) 3164 return -ENOMEM; 3165 3166 switch (ethcmd) { 3167 case ETHTOOL_FLASHDEV: 3168 if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { 3169 rc = -EFAULT; 3170 goto exit_free; 3171 } 3172 state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; 3173 break; 3174 } 3175 3176 rtnl_lock(); 3177 rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); 3178 rtnl_unlock(); 3179 if (rc) 3180 goto exit_free; 3181 3182 switch (ethcmd) { 3183 case ETHTOOL_FLASHDEV: 3184 if (state->devlink) 3185 rc = devlink_compat_flash_update(state->devlink, 3186 state->efl.data); 3187 break; 3188 case ETHTOOL_GDRVINFO: 3189 if (state->devlink) 3190 devlink_compat_running_version(state->devlink, 3191 state->info.fw_version, 3192 sizeof(state->info.fw_version)); 3193 if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { 3194 rc = -EFAULT; 3195 goto exit_free; 3196 } 3197 break; 3198 } 3199 3200 exit_free: 3201 if (state->devlink) 3202 devlink_put(state->devlink); 3203 kfree(state); 3204 return rc; 3205 } 3206 3207 struct ethtool_rx_flow_key { 3208 struct flow_dissector_key_basic basic; 3209 union { 3210 struct flow_dissector_key_ipv4_addrs ipv4; 3211 struct flow_dissector_key_ipv6_addrs ipv6; 3212 }; 3213 struct flow_dissector_key_ports tp; 3214 struct flow_dissector_key_ip ip; 3215 struct flow_dissector_key_vlan vlan; 3216 struct flow_dissector_key_eth_addrs eth_addrs; 3217 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ 3218 3219 struct ethtool_rx_flow_match { 3220 struct flow_dissector dissector; 3221 struct ethtool_rx_flow_key key; 3222 struct ethtool_rx_flow_key mask; 3223 }; 3224 3225 struct ethtool_rx_flow_rule * 3226 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) 3227 { 3228 const struct ethtool_rx_flow_spec *fs = input->fs; 3229 struct ethtool_rx_flow_match *match; 3230 struct ethtool_rx_flow_rule *flow; 3231 struct flow_action_entry *act; 3232 3233 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + 3234 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); 3235 if (!flow) 3236 return ERR_PTR(-ENOMEM); 3237 3238 /* ethtool_rx supports only one single action per rule. */ 3239 flow->rule = flow_rule_alloc(1); 3240 if (!flow->rule) { 3241 kfree(flow); 3242 return ERR_PTR(-ENOMEM); 3243 } 3244 3245 match = (struct ethtool_rx_flow_match *)flow->priv; 3246 flow->rule->match.dissector = &match->dissector; 3247 flow->rule->match.mask = &match->mask; 3248 flow->rule->match.key = &match->key; 3249 3250 match->mask.basic.n_proto = htons(0xffff); 3251 3252 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3253 case ETHER_FLOW: { 3254 const struct ethhdr *ether_spec, *ether_m_spec; 3255 3256 ether_spec = &fs->h_u.ether_spec; 3257 ether_m_spec = &fs->m_u.ether_spec; 3258 3259 if (!is_zero_ether_addr(ether_m_spec->h_source)) { 3260 ether_addr_copy(match->key.eth_addrs.src, 3261 ether_spec->h_source); 3262 ether_addr_copy(match->mask.eth_addrs.src, 3263 ether_m_spec->h_source); 3264 } 3265 if (!is_zero_ether_addr(ether_m_spec->h_dest)) { 3266 ether_addr_copy(match->key.eth_addrs.dst, 3267 ether_spec->h_dest); 3268 ether_addr_copy(match->mask.eth_addrs.dst, 3269 ether_m_spec->h_dest); 3270 } 3271 if (ether_m_spec->h_proto) { 3272 match->key.basic.n_proto = ether_spec->h_proto; 3273 match->mask.basic.n_proto = ether_m_spec->h_proto; 3274 } 3275 } 3276 break; 3277 case TCP_V4_FLOW: 3278 case UDP_V4_FLOW: { 3279 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; 3280 3281 match->key.basic.n_proto = htons(ETH_P_IP); 3282 3283 v4_spec = &fs->h_u.tcp_ip4_spec; 3284 v4_m_spec = &fs->m_u.tcp_ip4_spec; 3285 3286 if (v4_m_spec->ip4src) { 3287 match->key.ipv4.src = v4_spec->ip4src; 3288 match->mask.ipv4.src = v4_m_spec->ip4src; 3289 } 3290 if (v4_m_spec->ip4dst) { 3291 match->key.ipv4.dst = v4_spec->ip4dst; 3292 match->mask.ipv4.dst = v4_m_spec->ip4dst; 3293 } 3294 if (v4_m_spec->ip4src || 3295 v4_m_spec->ip4dst) { 3296 match->dissector.used_keys |= 3297 BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS); 3298 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = 3299 offsetof(struct ethtool_rx_flow_key, ipv4); 3300 } 3301 if (v4_m_spec->psrc) { 3302 match->key.tp.src = v4_spec->psrc; 3303 match->mask.tp.src = v4_m_spec->psrc; 3304 } 3305 if (v4_m_spec->pdst) { 3306 match->key.tp.dst = v4_spec->pdst; 3307 match->mask.tp.dst = v4_m_spec->pdst; 3308 } 3309 if (v4_m_spec->psrc || 3310 v4_m_spec->pdst) { 3311 match->dissector.used_keys |= 3312 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3313 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3314 offsetof(struct ethtool_rx_flow_key, tp); 3315 } 3316 if (v4_m_spec->tos) { 3317 match->key.ip.tos = v4_spec->tos; 3318 match->mask.ip.tos = v4_m_spec->tos; 3319 match->dissector.used_keys |= 3320 BIT(FLOW_DISSECTOR_KEY_IP); 3321 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3322 offsetof(struct ethtool_rx_flow_key, ip); 3323 } 3324 } 3325 break; 3326 case TCP_V6_FLOW: 3327 case UDP_V6_FLOW: { 3328 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; 3329 3330 match->key.basic.n_proto = htons(ETH_P_IPV6); 3331 3332 v6_spec = &fs->h_u.tcp_ip6_spec; 3333 v6_m_spec = &fs->m_u.tcp_ip6_spec; 3334 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) { 3335 memcpy(&match->key.ipv6.src, v6_spec->ip6src, 3336 sizeof(match->key.ipv6.src)); 3337 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, 3338 sizeof(match->mask.ipv6.src)); 3339 } 3340 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3341 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, 3342 sizeof(match->key.ipv6.dst)); 3343 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, 3344 sizeof(match->mask.ipv6.dst)); 3345 } 3346 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) || 3347 !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3348 match->dissector.used_keys |= 3349 BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS); 3350 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = 3351 offsetof(struct ethtool_rx_flow_key, ipv6); 3352 } 3353 if (v6_m_spec->psrc) { 3354 match->key.tp.src = v6_spec->psrc; 3355 match->mask.tp.src = v6_m_spec->psrc; 3356 } 3357 if (v6_m_spec->pdst) { 3358 match->key.tp.dst = v6_spec->pdst; 3359 match->mask.tp.dst = v6_m_spec->pdst; 3360 } 3361 if (v6_m_spec->psrc || 3362 v6_m_spec->pdst) { 3363 match->dissector.used_keys |= 3364 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3365 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3366 offsetof(struct ethtool_rx_flow_key, tp); 3367 } 3368 if (v6_m_spec->tclass) { 3369 match->key.ip.tos = v6_spec->tclass; 3370 match->mask.ip.tos = v6_m_spec->tclass; 3371 match->dissector.used_keys |= 3372 BIT_ULL(FLOW_DISSECTOR_KEY_IP); 3373 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3374 offsetof(struct ethtool_rx_flow_key, ip); 3375 } 3376 } 3377 break; 3378 default: 3379 ethtool_rx_flow_rule_destroy(flow); 3380 return ERR_PTR(-EINVAL); 3381 } 3382 3383 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3384 case TCP_V4_FLOW: 3385 case TCP_V6_FLOW: 3386 match->key.basic.ip_proto = IPPROTO_TCP; 3387 match->mask.basic.ip_proto = 0xff; 3388 break; 3389 case UDP_V4_FLOW: 3390 case UDP_V6_FLOW: 3391 match->key.basic.ip_proto = IPPROTO_UDP; 3392 match->mask.basic.ip_proto = 0xff; 3393 break; 3394 } 3395 3396 match->dissector.used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_BASIC); 3397 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = 3398 offsetof(struct ethtool_rx_flow_key, basic); 3399 3400 if (fs->flow_type & FLOW_EXT) { 3401 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3402 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3403 3404 if (ext_m_spec->vlan_etype) { 3405 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; 3406 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; 3407 } 3408 3409 if (ext_m_spec->vlan_tci) { 3410 match->key.vlan.vlan_id = 3411 ntohs(ext_h_spec->vlan_tci) & 0x0fff; 3412 match->mask.vlan.vlan_id = 3413 ntohs(ext_m_spec->vlan_tci) & 0x0fff; 3414 3415 match->key.vlan.vlan_dei = 3416 !!(ext_h_spec->vlan_tci & htons(0x1000)); 3417 match->mask.vlan.vlan_dei = 3418 !!(ext_m_spec->vlan_tci & htons(0x1000)); 3419 3420 match->key.vlan.vlan_priority = 3421 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; 3422 match->mask.vlan.vlan_priority = 3423 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; 3424 } 3425 3426 if (ext_m_spec->vlan_etype || 3427 ext_m_spec->vlan_tci) { 3428 match->dissector.used_keys |= 3429 BIT_ULL(FLOW_DISSECTOR_KEY_VLAN); 3430 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = 3431 offsetof(struct ethtool_rx_flow_key, vlan); 3432 } 3433 } 3434 if (fs->flow_type & FLOW_MAC_EXT) { 3435 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3436 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3437 3438 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, 3439 ETH_ALEN); 3440 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, 3441 ETH_ALEN); 3442 3443 match->dissector.used_keys |= 3444 BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS); 3445 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = 3446 offsetof(struct ethtool_rx_flow_key, eth_addrs); 3447 } 3448 3449 act = &flow->rule->action.entries[0]; 3450 switch (fs->ring_cookie) { 3451 case RX_CLS_FLOW_DISC: 3452 act->id = FLOW_ACTION_DROP; 3453 break; 3454 case RX_CLS_FLOW_WAKE: 3455 act->id = FLOW_ACTION_WAKE; 3456 break; 3457 default: 3458 act->id = FLOW_ACTION_QUEUE; 3459 if (fs->flow_type & FLOW_RSS) 3460 act->queue.ctx = input->rss_ctx; 3461 3462 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); 3463 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); 3464 break; 3465 } 3466 3467 return flow; 3468 } 3469 EXPORT_SYMBOL(ethtool_rx_flow_rule_create); 3470 3471 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) 3472 { 3473 kfree(flow->rule); 3474 kfree(flow); 3475 } 3476 EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); 3477