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