1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * net/core/ethtool.c - Ethtool ioctl handler 4 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx> 5 * 6 * This file is where we call all the ethtool_ops commands to get 7 * the information ethtool needs. 8 */ 9 10 #include <linux/compat.h> 11 #include <linux/etherdevice.h> 12 #include <linux/module.h> 13 #include <linux/types.h> 14 #include <linux/capability.h> 15 #include <linux/errno.h> 16 #include <linux/ethtool.h> 17 #include <linux/netdevice.h> 18 #include <linux/net_tstamp.h> 19 #include <linux/phy.h> 20 #include <linux/bitops.h> 21 #include <linux/uaccess.h> 22 #include <linux/vmalloc.h> 23 #include <linux/sfp.h> 24 #include <linux/slab.h> 25 #include <linux/rtnetlink.h> 26 #include <linux/sched/signal.h> 27 #include <linux/net.h> 28 #include <linux/pm_runtime.h> 29 #include <linux/utsname.h> 30 #include <net/devlink.h> 31 #include <net/ipv6.h> 32 #include <net/xdp_sock_drv.h> 33 #include <net/flow_offload.h> 34 #include <net/netdev_lock.h> 35 #include <linux/ethtool_netlink.h> 36 #include "common.h" 37 38 /* State held across locks and calls for commands which have devlink fallback */ 39 struct ethtool_devlink_compat { 40 struct devlink *devlink; 41 union { 42 struct ethtool_flash efl; 43 struct ethtool_drvinfo info; 44 }; 45 }; 46 47 static struct devlink *netdev_to_devlink_get(struct net_device *dev) 48 { 49 if (!dev->devlink_port) 50 return NULL; 51 return devlink_try_get(dev->devlink_port->devlink); 52 } 53 54 /* 55 * Some useful ethtool_ops methods that're device independent. 56 * If we find that all drivers want to do the same thing here, 57 * we can turn these into dev_() function calls. 58 */ 59 60 u32 ethtool_op_get_link(struct net_device *dev) 61 { 62 /* Synchronize carrier state with link watch, see also rtnl_getlink() */ 63 __linkwatch_sync_dev(dev); 64 65 return netif_carrier_ok(dev) ? 1 : 0; 66 } 67 EXPORT_SYMBOL(ethtool_op_get_link); 68 69 int ethtool_op_get_ts_info(struct net_device *dev, 70 struct kernel_ethtool_ts_info *info) 71 { 72 info->so_timestamping = 73 SOF_TIMESTAMPING_TX_SOFTWARE | 74 SOF_TIMESTAMPING_RX_SOFTWARE | 75 SOF_TIMESTAMPING_SOFTWARE; 76 info->phc_index = -1; 77 return 0; 78 } 79 EXPORT_SYMBOL(ethtool_op_get_ts_info); 80 81 /* Handlers for each ethtool command */ 82 83 static int ethtool_get_features(struct net_device *dev, void __user *useraddr) 84 { 85 struct ethtool_gfeatures cmd = { 86 .cmd = ETHTOOL_GFEATURES, 87 .size = ETHTOOL_DEV_FEATURE_WORDS, 88 }; 89 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 90 u32 __user *sizeaddr; 91 u32 copy_size; 92 int i; 93 94 /* in case feature bits run out again */ 95 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); 96 97 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 98 features[i].available = (u32)(dev->hw_features >> (32 * i)); 99 features[i].requested = (u32)(dev->wanted_features >> (32 * i)); 100 features[i].active = (u32)(dev->features >> (32 * i)); 101 features[i].never_changed = 102 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); 103 } 104 105 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); 106 if (get_user(copy_size, sizeaddr)) 107 return -EFAULT; 108 109 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) 110 copy_size = ETHTOOL_DEV_FEATURE_WORDS; 111 112 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 113 return -EFAULT; 114 useraddr += sizeof(cmd); 115 if (copy_to_user(useraddr, features, 116 array_size(copy_size, sizeof(*features)))) 117 return -EFAULT; 118 119 return 0; 120 } 121 122 static int ethtool_set_features(struct net_device *dev, void __user *useraddr) 123 { 124 struct ethtool_sfeatures cmd; 125 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 126 netdev_features_t wanted = 0, valid = 0; 127 int i, ret = 0; 128 129 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 130 return -EFAULT; 131 useraddr += sizeof(cmd); 132 133 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) 134 return -EINVAL; 135 136 if (copy_from_user(features, useraddr, sizeof(features))) 137 return -EFAULT; 138 139 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 140 valid |= (netdev_features_t)features[i].valid << (32 * i); 141 wanted |= (netdev_features_t)features[i].requested << (32 * i); 142 } 143 144 if (valid & ~NETIF_F_ETHTOOL_BITS) 145 return -EINVAL; 146 147 if (valid & ~dev->hw_features) { 148 valid &= dev->hw_features; 149 ret |= ETHTOOL_F_UNSUPPORTED; 150 } 151 152 dev->wanted_features &= ~valid; 153 dev->wanted_features |= wanted & valid; 154 __netdev_update_features(dev); 155 156 if ((dev->wanted_features ^ dev->features) & valid) 157 ret |= ETHTOOL_F_WISH; 158 159 return ret; 160 } 161 162 static int __ethtool_get_sset_count(struct net_device *dev, int sset) 163 { 164 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 165 const struct ethtool_ops *ops = dev->ethtool_ops; 166 167 if (sset == ETH_SS_FEATURES) 168 return ARRAY_SIZE(netdev_features_strings); 169 170 if (sset == ETH_SS_RSS_HASH_FUNCS) 171 return ARRAY_SIZE(rss_hash_func_strings); 172 173 if (sset == ETH_SS_TUNABLES) 174 return ARRAY_SIZE(tunable_strings); 175 176 if (sset == ETH_SS_PHY_TUNABLES) 177 return ARRAY_SIZE(phy_tunable_strings); 178 179 if (sset == ETH_SS_PHY_STATS && dev->phydev && 180 !ops->get_ethtool_phy_stats && 181 phy_ops && phy_ops->get_sset_count) 182 return phy_ops->get_sset_count(dev->phydev); 183 184 if (sset == ETH_SS_LINK_MODES) 185 return __ETHTOOL_LINK_MODE_MASK_NBITS; 186 187 if (ops->get_sset_count && ops->get_strings) 188 return ops->get_sset_count(dev, sset); 189 else 190 return -EOPNOTSUPP; 191 } 192 193 static void __ethtool_get_strings(struct net_device *dev, 194 u32 stringset, u8 *data) 195 { 196 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 197 const struct ethtool_ops *ops = dev->ethtool_ops; 198 199 if (stringset == ETH_SS_FEATURES) 200 memcpy(data, netdev_features_strings, 201 sizeof(netdev_features_strings)); 202 else if (stringset == ETH_SS_RSS_HASH_FUNCS) 203 memcpy(data, rss_hash_func_strings, 204 sizeof(rss_hash_func_strings)); 205 else if (stringset == ETH_SS_TUNABLES) 206 memcpy(data, tunable_strings, sizeof(tunable_strings)); 207 else if (stringset == ETH_SS_PHY_TUNABLES) 208 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); 209 else if (stringset == ETH_SS_PHY_STATS && dev->phydev && 210 !ops->get_ethtool_phy_stats && phy_ops && 211 phy_ops->get_strings) 212 phy_ops->get_strings(dev->phydev, data); 213 else if (stringset == ETH_SS_LINK_MODES) 214 memcpy(data, link_mode_names, 215 __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN); 216 else 217 /* ops->get_strings is valid because checked earlier */ 218 ops->get_strings(dev, stringset, data); 219 } 220 221 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) 222 { 223 /* feature masks of legacy discrete ethtool ops */ 224 225 switch (eth_cmd) { 226 case ETHTOOL_GTXCSUM: 227 case ETHTOOL_STXCSUM: 228 return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC | 229 NETIF_F_SCTP_CRC; 230 case ETHTOOL_GRXCSUM: 231 case ETHTOOL_SRXCSUM: 232 return NETIF_F_RXCSUM; 233 case ETHTOOL_GSG: 234 case ETHTOOL_SSG: 235 return NETIF_F_SG | NETIF_F_FRAGLIST; 236 case ETHTOOL_GTSO: 237 case ETHTOOL_STSO: 238 return NETIF_F_ALL_TSO; 239 case ETHTOOL_GGSO: 240 case ETHTOOL_SGSO: 241 return NETIF_F_GSO; 242 case ETHTOOL_GGRO: 243 case ETHTOOL_SGRO: 244 return NETIF_F_GRO; 245 default: 246 BUG(); 247 } 248 } 249 250 static int ethtool_get_one_feature(struct net_device *dev, 251 char __user *useraddr, u32 ethcmd) 252 { 253 netdev_features_t mask = ethtool_get_feature_mask(ethcmd); 254 struct ethtool_value edata = { 255 .cmd = ethcmd, 256 .data = !!(dev->features & mask), 257 }; 258 259 if (copy_to_user(useraddr, &edata, sizeof(edata))) 260 return -EFAULT; 261 return 0; 262 } 263 264 static int ethtool_set_one_feature(struct net_device *dev, 265 void __user *useraddr, u32 ethcmd) 266 { 267 struct ethtool_value edata; 268 netdev_features_t mask; 269 270 if (copy_from_user(&edata, useraddr, sizeof(edata))) 271 return -EFAULT; 272 273 mask = ethtool_get_feature_mask(ethcmd); 274 mask &= dev->hw_features; 275 if (!mask) 276 return -EOPNOTSUPP; 277 278 if (edata.data) 279 dev->wanted_features |= mask; 280 else 281 dev->wanted_features &= ~mask; 282 283 __netdev_update_features(dev); 284 285 return 0; 286 } 287 288 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ 289 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) 290 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ 291 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ 292 NETIF_F_RXHASH) 293 294 static u32 __ethtool_get_flags(struct net_device *dev) 295 { 296 u32 flags = 0; 297 298 if (dev->features & NETIF_F_LRO) 299 flags |= ETH_FLAG_LRO; 300 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 301 flags |= ETH_FLAG_RXVLAN; 302 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) 303 flags |= ETH_FLAG_TXVLAN; 304 if (dev->features & NETIF_F_NTUPLE) 305 flags |= ETH_FLAG_NTUPLE; 306 if (dev->features & NETIF_F_RXHASH) 307 flags |= ETH_FLAG_RXHASH; 308 309 return flags; 310 } 311 312 static int __ethtool_set_flags(struct net_device *dev, u32 data) 313 { 314 netdev_features_t features = 0, changed; 315 316 if (data & ~ETH_ALL_FLAGS) 317 return -EINVAL; 318 319 if (data & ETH_FLAG_LRO) 320 features |= NETIF_F_LRO; 321 if (data & ETH_FLAG_RXVLAN) 322 features |= NETIF_F_HW_VLAN_CTAG_RX; 323 if (data & ETH_FLAG_TXVLAN) 324 features |= NETIF_F_HW_VLAN_CTAG_TX; 325 if (data & ETH_FLAG_NTUPLE) 326 features |= NETIF_F_NTUPLE; 327 if (data & ETH_FLAG_RXHASH) 328 features |= NETIF_F_RXHASH; 329 330 /* allow changing only bits set in hw_features */ 331 changed = (features ^ dev->features) & ETH_ALL_FEATURES; 332 if (changed & ~dev->hw_features) 333 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; 334 335 dev->wanted_features = 336 (dev->wanted_features & ~changed) | (features & changed); 337 338 __netdev_update_features(dev); 339 340 return 0; 341 } 342 343 /* Given two link masks, AND them together and save the result in dst. */ 344 void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, 345 struct ethtool_link_ksettings *src) 346 { 347 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); 348 unsigned int idx = 0; 349 350 for (; idx < size; idx++) { 351 dst->link_modes.supported[idx] &= 352 src->link_modes.supported[idx]; 353 dst->link_modes.advertising[idx] &= 354 src->link_modes.advertising[idx]; 355 } 356 } 357 EXPORT_SYMBOL(ethtool_intersect_link_masks); 358 359 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, 360 u32 legacy_u32) 361 { 362 linkmode_zero(dst); 363 dst[0] = legacy_u32; 364 } 365 EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); 366 367 /* return false if src had higher bits set. lower bits always updated. */ 368 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, 369 const unsigned long *src) 370 { 371 *legacy_u32 = src[0]; 372 return find_next_bit(src, __ETHTOOL_LINK_MODE_MASK_NBITS, 32) == 373 __ETHTOOL_LINK_MODE_MASK_NBITS; 374 } 375 EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); 376 377 /* return false if ksettings link modes had higher bits 378 * set. legacy_settings always updated (best effort) 379 */ 380 static bool 381 convert_link_ksettings_to_legacy_settings( 382 struct ethtool_cmd *legacy_settings, 383 const struct ethtool_link_ksettings *link_ksettings) 384 { 385 bool retval = true; 386 387 memset(legacy_settings, 0, sizeof(*legacy_settings)); 388 /* this also clears the deprecated fields in legacy structure: 389 * __u8 transceiver; 390 * __u32 maxtxpkt; 391 * __u32 maxrxpkt; 392 */ 393 394 retval &= ethtool_convert_link_mode_to_legacy_u32( 395 &legacy_settings->supported, 396 link_ksettings->link_modes.supported); 397 retval &= ethtool_convert_link_mode_to_legacy_u32( 398 &legacy_settings->advertising, 399 link_ksettings->link_modes.advertising); 400 retval &= ethtool_convert_link_mode_to_legacy_u32( 401 &legacy_settings->lp_advertising, 402 link_ksettings->link_modes.lp_advertising); 403 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); 404 legacy_settings->duplex 405 = link_ksettings->base.duplex; 406 legacy_settings->port 407 = link_ksettings->base.port; 408 legacy_settings->phy_address 409 = link_ksettings->base.phy_address; 410 legacy_settings->autoneg 411 = link_ksettings->base.autoneg; 412 legacy_settings->mdio_support 413 = link_ksettings->base.mdio_support; 414 legacy_settings->eth_tp_mdix 415 = link_ksettings->base.eth_tp_mdix; 416 legacy_settings->eth_tp_mdix_ctrl 417 = link_ksettings->base.eth_tp_mdix_ctrl; 418 legacy_settings->transceiver 419 = link_ksettings->base.transceiver; 420 return retval; 421 } 422 423 /* number of 32-bit words to store the user's link mode bitmaps */ 424 #define __ETHTOOL_LINK_MODE_MASK_NU32 \ 425 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) 426 427 /* layout of the struct passed from/to userland */ 428 struct ethtool_link_usettings { 429 struct ethtool_link_settings base; 430 struct { 431 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; 432 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 433 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 434 } link_modes; 435 }; 436 437 /* Internal kernel helper to query a device ethtool_link_settings. */ 438 int __ethtool_get_link_ksettings(struct net_device *dev, 439 struct ethtool_link_ksettings *link_ksettings) 440 { 441 ASSERT_RTNL(); 442 443 if (!dev->ethtool_ops->get_link_ksettings) 444 return -EOPNOTSUPP; 445 446 if (!netif_device_present(dev)) 447 return -ENODEV; 448 449 memset(link_ksettings, 0, sizeof(*link_ksettings)); 450 return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings); 451 } 452 EXPORT_SYMBOL(__ethtool_get_link_ksettings); 453 454 /* convert ethtool_link_usettings in user space to a kernel internal 455 * ethtool_link_ksettings. return 0 on success, errno on error. 456 */ 457 static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, 458 const void __user *from) 459 { 460 struct ethtool_link_usettings link_usettings; 461 462 if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) 463 return -EFAULT; 464 465 memcpy(&to->base, &link_usettings.base, sizeof(to->base)); 466 bitmap_from_arr32(to->link_modes.supported, 467 link_usettings.link_modes.supported, 468 __ETHTOOL_LINK_MODE_MASK_NBITS); 469 bitmap_from_arr32(to->link_modes.advertising, 470 link_usettings.link_modes.advertising, 471 __ETHTOOL_LINK_MODE_MASK_NBITS); 472 bitmap_from_arr32(to->link_modes.lp_advertising, 473 link_usettings.link_modes.lp_advertising, 474 __ETHTOOL_LINK_MODE_MASK_NBITS); 475 476 return 0; 477 } 478 479 /* Check if the user is trying to change anything besides speed/duplex */ 480 bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd) 481 { 482 struct ethtool_link_settings base2 = {}; 483 484 base2.speed = cmd->base.speed; 485 base2.port = PORT_OTHER; 486 base2.duplex = cmd->base.duplex; 487 base2.cmd = cmd->base.cmd; 488 base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords; 489 490 return !memcmp(&base2, &cmd->base, sizeof(base2)) && 491 bitmap_empty(cmd->link_modes.supported, 492 __ETHTOOL_LINK_MODE_MASK_NBITS) && 493 bitmap_empty(cmd->link_modes.lp_advertising, 494 __ETHTOOL_LINK_MODE_MASK_NBITS); 495 } 496 497 /* convert a kernel internal ethtool_link_ksettings to 498 * ethtool_link_usettings in user space. return 0 on success, errno on 499 * error. 500 */ 501 static int 502 store_link_ksettings_for_user(void __user *to, 503 const struct ethtool_link_ksettings *from) 504 { 505 struct ethtool_link_usettings link_usettings; 506 507 memcpy(&link_usettings, from, sizeof(link_usettings)); 508 bitmap_to_arr32(link_usettings.link_modes.supported, 509 from->link_modes.supported, 510 __ETHTOOL_LINK_MODE_MASK_NBITS); 511 bitmap_to_arr32(link_usettings.link_modes.advertising, 512 from->link_modes.advertising, 513 __ETHTOOL_LINK_MODE_MASK_NBITS); 514 bitmap_to_arr32(link_usettings.link_modes.lp_advertising, 515 from->link_modes.lp_advertising, 516 __ETHTOOL_LINK_MODE_MASK_NBITS); 517 518 if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) 519 return -EFAULT; 520 521 return 0; 522 } 523 524 /* Query device for its ethtool_link_settings. */ 525 static int ethtool_get_link_ksettings(struct net_device *dev, 526 void __user *useraddr) 527 { 528 int err = 0; 529 struct ethtool_link_ksettings link_ksettings; 530 531 ASSERT_RTNL(); 532 if (!dev->ethtool_ops->get_link_ksettings) 533 return -EOPNOTSUPP; 534 535 /* handle bitmap nbits handshake */ 536 if (copy_from_user(&link_ksettings.base, useraddr, 537 sizeof(link_ksettings.base))) 538 return -EFAULT; 539 540 if (__ETHTOOL_LINK_MODE_MASK_NU32 541 != link_ksettings.base.link_mode_masks_nwords) { 542 /* wrong link mode nbits requested */ 543 memset(&link_ksettings, 0, sizeof(link_ksettings)); 544 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 545 /* send back number of words required as negative val */ 546 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, 547 "need too many bits for link modes!"); 548 link_ksettings.base.link_mode_masks_nwords 549 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); 550 551 /* copy the base fields back to user, not the link 552 * mode bitmaps 553 */ 554 if (copy_to_user(useraddr, &link_ksettings.base, 555 sizeof(link_ksettings.base))) 556 return -EFAULT; 557 558 return 0; 559 } 560 561 /* handshake successful: user/kernel agree on 562 * link_mode_masks_nwords 563 */ 564 565 memset(&link_ksettings, 0, sizeof(link_ksettings)); 566 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 567 if (err < 0) 568 return err; 569 570 /* make sure we tell the right values to user */ 571 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 572 link_ksettings.base.link_mode_masks_nwords 573 = __ETHTOOL_LINK_MODE_MASK_NU32; 574 link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED; 575 link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED; 576 link_ksettings.base.rate_matching = RATE_MATCH_NONE; 577 578 return store_link_ksettings_for_user(useraddr, &link_ksettings); 579 } 580 581 /* Update device ethtool_link_settings. */ 582 static int ethtool_set_link_ksettings(struct net_device *dev, 583 void __user *useraddr) 584 { 585 struct ethtool_link_ksettings link_ksettings = {}; 586 int err; 587 588 ASSERT_RTNL(); 589 590 if (!dev->ethtool_ops->set_link_ksettings) 591 return -EOPNOTSUPP; 592 593 /* make sure nbits field has expected value */ 594 if (copy_from_user(&link_ksettings.base, useraddr, 595 sizeof(link_ksettings.base))) 596 return -EFAULT; 597 598 if (__ETHTOOL_LINK_MODE_MASK_NU32 599 != link_ksettings.base.link_mode_masks_nwords) 600 return -EINVAL; 601 602 /* copy the whole structure, now that we know it has expected 603 * format 604 */ 605 err = load_link_ksettings_from_user(&link_ksettings, useraddr); 606 if (err) 607 return err; 608 609 /* re-check nwords field, just in case */ 610 if (__ETHTOOL_LINK_MODE_MASK_NU32 611 != link_ksettings.base.link_mode_masks_nwords) 612 return -EINVAL; 613 614 if (link_ksettings.base.master_slave_cfg || 615 link_ksettings.base.master_slave_state) 616 return -EINVAL; 617 618 err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 619 if (err >= 0) { 620 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF); 621 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF); 622 } 623 return err; 624 } 625 626 int ethtool_virtdev_set_link_ksettings(struct net_device *dev, 627 const struct ethtool_link_ksettings *cmd, 628 u32 *dev_speed, u8 *dev_duplex) 629 { 630 u32 speed; 631 u8 duplex; 632 633 speed = cmd->base.speed; 634 duplex = cmd->base.duplex; 635 /* don't allow custom speed and duplex */ 636 if (!ethtool_validate_speed(speed) || 637 !ethtool_validate_duplex(duplex) || 638 !ethtool_virtdev_validate_cmd(cmd)) 639 return -EINVAL; 640 *dev_speed = speed; 641 *dev_duplex = duplex; 642 643 return 0; 644 } 645 EXPORT_SYMBOL(ethtool_virtdev_set_link_ksettings); 646 647 /* Query device for its ethtool_cmd settings. 648 * 649 * Backward compatibility note: for compatibility with legacy ethtool, this is 650 * now implemented via get_link_ksettings. When driver reports higher link mode 651 * bits, a kernel warning is logged once (with name of 1st driver/device) to 652 * recommend user to upgrade ethtool, but the command is successful (only the 653 * lower link mode bits reported back to user). Deprecated fields from 654 * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero. 655 */ 656 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) 657 { 658 struct ethtool_link_ksettings link_ksettings; 659 struct ethtool_cmd cmd; 660 int err; 661 662 ASSERT_RTNL(); 663 if (!dev->ethtool_ops->get_link_ksettings) 664 return -EOPNOTSUPP; 665 666 if (dev->ethtool->module_fw_flash_in_progress) 667 return -EBUSY; 668 669 memset(&link_ksettings, 0, sizeof(link_ksettings)); 670 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 671 if (err < 0) 672 return err; 673 convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings); 674 675 /* send a sensible cmd tag back to user */ 676 cmd.cmd = ETHTOOL_GSET; 677 678 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 679 return -EFAULT; 680 681 return 0; 682 } 683 684 /* Update device link settings with given ethtool_cmd. 685 * 686 * Backward compatibility note: for compatibility with legacy ethtool, this is 687 * now always implemented via set_link_settings. When user's request updates 688 * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel 689 * warning is logged once (with name of 1st driver/device) to recommend user to 690 * upgrade ethtool, and the request is rejected. 691 */ 692 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) 693 { 694 struct ethtool_link_ksettings link_ksettings; 695 struct ethtool_cmd cmd; 696 int ret; 697 698 ASSERT_RTNL(); 699 700 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 701 return -EFAULT; 702 if (!dev->ethtool_ops->set_link_ksettings) 703 return -EOPNOTSUPP; 704 705 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd)) 706 return -EINVAL; 707 link_ksettings.base.link_mode_masks_nwords = 708 __ETHTOOL_LINK_MODE_MASK_NU32; 709 ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 710 if (ret >= 0) { 711 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF); 712 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF); 713 } 714 return ret; 715 } 716 717 static int 718 ethtool_get_drvinfo(struct net_device *dev, struct ethtool_devlink_compat *rsp) 719 { 720 const struct ethtool_ops *ops = dev->ethtool_ops; 721 struct device *parent = dev->dev.parent; 722 723 rsp->info.cmd = ETHTOOL_GDRVINFO; 724 strscpy(rsp->info.version, init_uts_ns.name.release, 725 sizeof(rsp->info.version)); 726 if (ops->get_drvinfo) { 727 ops->get_drvinfo(dev, &rsp->info); 728 if (!rsp->info.bus_info[0] && parent) 729 strscpy(rsp->info.bus_info, dev_name(parent), 730 sizeof(rsp->info.bus_info)); 731 if (!rsp->info.driver[0] && parent && parent->driver) 732 strscpy(rsp->info.driver, parent->driver->name, 733 sizeof(rsp->info.driver)); 734 } else if (parent && parent->driver) { 735 strscpy(rsp->info.bus_info, dev_name(parent), 736 sizeof(rsp->info.bus_info)); 737 strscpy(rsp->info.driver, parent->driver->name, 738 sizeof(rsp->info.driver)); 739 } else if (dev->rtnl_link_ops) { 740 strscpy(rsp->info.driver, dev->rtnl_link_ops->kind, 741 sizeof(rsp->info.driver)); 742 } else { 743 return -EOPNOTSUPP; 744 } 745 746 /* 747 * this method of obtaining string set info is deprecated; 748 * Use ETHTOOL_GSSET_INFO instead. 749 */ 750 if (ops->get_sset_count) { 751 int rc; 752 753 rc = ops->get_sset_count(dev, ETH_SS_TEST); 754 if (rc >= 0) 755 rsp->info.testinfo_len = rc; 756 rc = ops->get_sset_count(dev, ETH_SS_STATS); 757 if (rc >= 0) 758 rsp->info.n_stats = rc; 759 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); 760 if (rc >= 0) 761 rsp->info.n_priv_flags = rc; 762 } 763 if (ops->get_regs_len) { 764 int ret = ops->get_regs_len(dev); 765 766 if (ret > 0) 767 rsp->info.regdump_len = ret; 768 } 769 770 if (ops->get_eeprom_len) 771 rsp->info.eedump_len = ops->get_eeprom_len(dev); 772 773 if (!rsp->info.fw_version[0]) 774 rsp->devlink = netdev_to_devlink_get(dev); 775 776 return 0; 777 } 778 779 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, 780 void __user *useraddr) 781 { 782 struct ethtool_sset_info info; 783 u64 sset_mask; 784 int i, idx = 0, n_bits = 0, ret, rc; 785 u32 *info_buf = NULL; 786 787 if (copy_from_user(&info, useraddr, sizeof(info))) 788 return -EFAULT; 789 790 /* store copy of mask, because we zero struct later on */ 791 sset_mask = info.sset_mask; 792 if (!sset_mask) 793 return 0; 794 795 /* calculate size of return buffer */ 796 n_bits = hweight64(sset_mask); 797 798 memset(&info, 0, sizeof(info)); 799 info.cmd = ETHTOOL_GSSET_INFO; 800 801 info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER); 802 if (!info_buf) 803 return -ENOMEM; 804 805 /* 806 * fill return buffer based on input bitmask and successful 807 * get_sset_count return 808 */ 809 for (i = 0; i < 64; i++) { 810 if (!(sset_mask & (1ULL << i))) 811 continue; 812 813 rc = __ethtool_get_sset_count(dev, i); 814 if (rc >= 0) { 815 info.sset_mask |= (1ULL << i); 816 info_buf[idx++] = rc; 817 } 818 } 819 820 ret = -EFAULT; 821 if (copy_to_user(useraddr, &info, sizeof(info))) 822 goto out; 823 824 useraddr += offsetof(struct ethtool_sset_info, data); 825 if (copy_to_user(useraddr, info_buf, array_size(idx, sizeof(u32)))) 826 goto out; 827 828 ret = 0; 829 830 out: 831 kfree(info_buf); 832 return ret; 833 } 834 835 static noinline_for_stack int 836 ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc, 837 const struct compat_ethtool_rxnfc __user *useraddr, 838 size_t size) 839 { 840 struct compat_ethtool_rxnfc crxnfc = {}; 841 842 /* We expect there to be holes between fs.m_ext and 843 * fs.ring_cookie and at the end of fs, but nowhere else. 844 * On non-x86, no conversion should be needed. 845 */ 846 BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) && 847 sizeof(struct compat_ethtool_rxnfc) != 848 sizeof(struct ethtool_rxnfc)); 849 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) + 850 sizeof(useraddr->fs.m_ext) != 851 offsetof(struct ethtool_rxnfc, fs.m_ext) + 852 sizeof(rxnfc->fs.m_ext)); 853 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) - 854 offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) != 855 offsetof(struct ethtool_rxnfc, fs.location) - 856 offsetof(struct ethtool_rxnfc, fs.ring_cookie)); 857 858 if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc)))) 859 return -EFAULT; 860 861 *rxnfc = (struct ethtool_rxnfc) { 862 .cmd = crxnfc.cmd, 863 .flow_type = crxnfc.flow_type, 864 .data = crxnfc.data, 865 .fs = { 866 .flow_type = crxnfc.fs.flow_type, 867 .h_u = crxnfc.fs.h_u, 868 .h_ext = crxnfc.fs.h_ext, 869 .m_u = crxnfc.fs.m_u, 870 .m_ext = crxnfc.fs.m_ext, 871 .ring_cookie = crxnfc.fs.ring_cookie, 872 .location = crxnfc.fs.location, 873 }, 874 .rule_cnt = crxnfc.rule_cnt, 875 }; 876 877 return 0; 878 } 879 880 static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc, 881 const void __user *useraddr, 882 size_t size) 883 { 884 if (compat_need_64bit_alignment_fixup()) 885 return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size); 886 887 if (copy_from_user(rxnfc, useraddr, size)) 888 return -EFAULT; 889 890 return 0; 891 } 892 893 static int ethtool_rxnfc_copy_to_compat(void __user *useraddr, 894 const struct ethtool_rxnfc *rxnfc, 895 size_t size, const u32 *rule_buf) 896 { 897 struct compat_ethtool_rxnfc crxnfc; 898 899 memset(&crxnfc, 0, sizeof(crxnfc)); 900 crxnfc = (struct compat_ethtool_rxnfc) { 901 .cmd = rxnfc->cmd, 902 .flow_type = rxnfc->flow_type, 903 .data = rxnfc->data, 904 .fs = { 905 .flow_type = rxnfc->fs.flow_type, 906 .h_u = rxnfc->fs.h_u, 907 .h_ext = rxnfc->fs.h_ext, 908 .m_u = rxnfc->fs.m_u, 909 .m_ext = rxnfc->fs.m_ext, 910 .ring_cookie = rxnfc->fs.ring_cookie, 911 .location = rxnfc->fs.location, 912 }, 913 .rule_cnt = rxnfc->rule_cnt, 914 }; 915 916 if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc)))) 917 return -EFAULT; 918 919 return 0; 920 } 921 922 static int ethtool_rxnfc_copy_struct(u32 cmd, struct ethtool_rxnfc *info, 923 size_t *info_size, void __user *useraddr) 924 { 925 /* struct ethtool_rxnfc was originally defined for 926 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 927 * members. User-space might still be using that 928 * definition. 929 */ 930 if (cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) 931 *info_size = (offsetof(struct ethtool_rxnfc, data) + 932 sizeof(info->data)); 933 934 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) 935 return -EFAULT; 936 937 if ((cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) && info->flow_type & FLOW_RSS) { 938 *info_size = sizeof(*info); 939 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) 940 return -EFAULT; 941 /* Since malicious users may modify the original data, 942 * we need to check whether FLOW_RSS is still requested. 943 */ 944 if (!(info->flow_type & FLOW_RSS)) 945 return -EINVAL; 946 } 947 948 if (info->cmd != cmd) 949 return -EINVAL; 950 951 return 0; 952 } 953 954 static int ethtool_rxnfc_copy_to_user(void __user *useraddr, 955 const struct ethtool_rxnfc *rxnfc, 956 size_t size, const u32 *rule_buf) 957 { 958 int ret; 959 960 if (compat_need_64bit_alignment_fixup()) { 961 ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size, 962 rule_buf); 963 useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs); 964 } else { 965 ret = copy_to_user(useraddr, rxnfc, size); 966 useraddr += offsetof(struct ethtool_rxnfc, rule_locs); 967 } 968 969 if (ret) 970 return -EFAULT; 971 972 if (rule_buf) { 973 if (copy_to_user(useraddr, rule_buf, 974 rxnfc->rule_cnt * sizeof(u32))) 975 return -EFAULT; 976 } 977 978 return 0; 979 } 980 981 static bool flow_type_hashable(u32 flow_type) 982 { 983 switch (flow_type) { 984 case TCP_V4_FLOW: 985 case UDP_V4_FLOW: 986 case SCTP_V4_FLOW: 987 case AH_ESP_V4_FLOW: 988 case TCP_V6_FLOW: 989 case UDP_V6_FLOW: 990 case SCTP_V6_FLOW: 991 case AH_ESP_V6_FLOW: 992 case AH_V4_FLOW: 993 case ESP_V4_FLOW: 994 case AH_V6_FLOW: 995 case ESP_V6_FLOW: 996 case IPV4_FLOW: 997 case IPV6_FLOW: 998 case GTPU_V4_FLOW: 999 case GTPU_V6_FLOW: 1000 case GTPC_V4_FLOW: 1001 case GTPC_V6_FLOW: 1002 case GTPC_TEID_V4_FLOW: 1003 case GTPC_TEID_V6_FLOW: 1004 case GTPU_EH_V4_FLOW: 1005 case GTPU_EH_V6_FLOW: 1006 case GTPU_UL_V4_FLOW: 1007 case GTPU_UL_V6_FLOW: 1008 case GTPU_DL_V4_FLOW: 1009 case GTPU_DL_V6_FLOW: 1010 return true; 1011 } 1012 1013 return false; 1014 } 1015 1016 /* When adding a new type, update the assert and, if it's hashable, add it to 1017 * the flow_type_hashable switch case. 1018 */ 1019 static_assert(GTPU_DL_V6_FLOW + 1 == __FLOW_TYPE_COUNT); 1020 1021 static int ethtool_check_xfrm_rxfh(u32 input_xfrm, u64 rxfh) 1022 { 1023 /* Sanity check: if symmetric-xor/symmetric-or-xor is set, then: 1024 * 1 - no other fields besides IP src/dst and/or L4 src/dst are set 1025 * 2 - If src is set, dst must also be set 1026 */ 1027 if ((input_xfrm != RXH_XFRM_NO_CHANGE && 1028 input_xfrm & (RXH_XFRM_SYM_XOR | RXH_XFRM_SYM_OR_XOR)) && 1029 ((rxfh & ~(RXH_IP_SRC | RXH_IP_DST | RXH_L4_B_0_1 | RXH_L4_B_2_3)) || 1030 (!!(rxfh & RXH_IP_SRC) ^ !!(rxfh & RXH_IP_DST)) || 1031 (!!(rxfh & RXH_L4_B_0_1) ^ !!(rxfh & RXH_L4_B_2_3)))) 1032 return -EINVAL; 1033 1034 return 0; 1035 } 1036 1037 static int ethtool_check_flow_types(struct net_device *dev, u32 input_xfrm) 1038 { 1039 const struct ethtool_ops *ops = dev->ethtool_ops; 1040 int err; 1041 u32 i; 1042 1043 for (i = 0; i < __FLOW_TYPE_COUNT; i++) { 1044 struct ethtool_rxfh_fields fields = { 1045 .flow_type = i, 1046 }; 1047 1048 if (!flow_type_hashable(i)) 1049 continue; 1050 1051 if (ops->get_rxfh_fields(dev, &fields)) 1052 continue; 1053 1054 err = ethtool_check_xfrm_rxfh(input_xfrm, fields.data); 1055 if (err) 1056 return err; 1057 } 1058 1059 return 0; 1060 } 1061 1062 static noinline_for_stack int 1063 ethtool_set_rxfh_fields(struct net_device *dev, u32 cmd, void __user *useraddr) 1064 { 1065 const struct ethtool_ops *ops = dev->ethtool_ops; 1066 struct ethtool_rxfh_fields fields = {}; 1067 struct ethtool_rxnfc info; 1068 size_t info_size = sizeof(info); 1069 int rc; 1070 1071 if (!ops->set_rxfh_fields) 1072 return -EOPNOTSUPP; 1073 1074 rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1075 if (rc) 1076 return rc; 1077 1078 if (info.flow_type & FLOW_RSS && info.rss_context && 1079 !ops->rxfh_per_ctx_fields) 1080 return -EINVAL; 1081 1082 mutex_lock(&dev->ethtool->rss_lock); 1083 if (ops->get_rxfh) { 1084 struct ethtool_rxfh_param rxfh = {}; 1085 1086 rc = ops->get_rxfh(dev, &rxfh); 1087 if (rc) 1088 goto exit_unlock; 1089 1090 rc = ethtool_check_xfrm_rxfh(rxfh.input_xfrm, info.data); 1091 if (rc) 1092 goto exit_unlock; 1093 } 1094 1095 fields.data = info.data; 1096 fields.flow_type = info.flow_type & ~FLOW_RSS; 1097 if (info.flow_type & FLOW_RSS) 1098 fields.rss_context = info.rss_context; 1099 1100 rc = ops->set_rxfh_fields(dev, &fields, NULL); 1101 exit_unlock: 1102 mutex_unlock(&dev->ethtool->rss_lock); 1103 return rc; 1104 } 1105 1106 static noinline_for_stack int 1107 ethtool_get_rxfh_fields(struct net_device *dev, u32 cmd, void __user *useraddr) 1108 { 1109 struct ethtool_rxnfc info; 1110 size_t info_size = sizeof(info); 1111 const struct ethtool_ops *ops = dev->ethtool_ops; 1112 struct ethtool_rxfh_fields fields = {}; 1113 int ret; 1114 1115 if (!ops->get_rxfh_fields) 1116 return -EOPNOTSUPP; 1117 1118 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1119 if (ret) 1120 return ret; 1121 1122 if (info.flow_type & FLOW_RSS && info.rss_context && 1123 !ops->rxfh_per_ctx_fields) 1124 return -EINVAL; 1125 1126 fields.flow_type = info.flow_type & ~FLOW_RSS; 1127 if (info.flow_type & FLOW_RSS) 1128 fields.rss_context = info.rss_context; 1129 1130 mutex_lock(&dev->ethtool->rss_lock); 1131 ret = ops->get_rxfh_fields(dev, &fields); 1132 mutex_unlock(&dev->ethtool->rss_lock); 1133 if (ret < 0) 1134 return ret; 1135 1136 info.data = fields.data; 1137 1138 return ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL); 1139 } 1140 1141 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, 1142 u32 cmd, void __user *useraddr) 1143 { 1144 const struct ethtool_ops *ops = dev->ethtool_ops; 1145 struct ethtool_rxnfc info; 1146 size_t info_size = sizeof(info); 1147 int rc; 1148 1149 if (!ops->set_rxnfc) 1150 return -EOPNOTSUPP; 1151 1152 rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1153 if (rc) 1154 return rc; 1155 1156 if (cmd == ETHTOOL_SRXCLSRLINS && info.fs.flow_type & FLOW_RSS) { 1157 /* Nonzero ring with RSS only makes sense 1158 * if NIC adds them together 1159 */ 1160 if (!ops->cap_rss_rxnfc_adds && 1161 ethtool_get_flow_spec_ring(info.fs.ring_cookie)) 1162 return -EINVAL; 1163 1164 if (info.rss_context && 1165 !xa_load(&dev->ethtool->rss_ctx, info.rss_context)) 1166 return -EINVAL; 1167 } 1168 1169 rc = ops->set_rxnfc(dev, &info); 1170 if (rc) 1171 return rc; 1172 1173 if (cmd == ETHTOOL_SRXCLSRLINS && 1174 ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL)) 1175 return -EFAULT; 1176 1177 return 0; 1178 } 1179 1180 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, 1181 u32 cmd, void __user *useraddr) 1182 { 1183 struct ethtool_rxnfc info; 1184 size_t info_size = sizeof(info); 1185 const struct ethtool_ops *ops = dev->ethtool_ops; 1186 int ret; 1187 void *rule_buf = NULL; 1188 1189 if (!ops->get_rxnfc) 1190 return -EOPNOTSUPP; 1191 1192 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1193 if (ret) 1194 return ret; 1195 1196 if (info.cmd == ETHTOOL_GRXCLSRLALL) { 1197 if (info.rule_cnt > 0) { 1198 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) 1199 rule_buf = kcalloc(info.rule_cnt, sizeof(u32), 1200 GFP_USER); 1201 if (!rule_buf) 1202 return -ENOMEM; 1203 } 1204 } 1205 1206 ret = ops->get_rxnfc(dev, &info, rule_buf); 1207 if (ret < 0) 1208 goto err_out; 1209 1210 ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf); 1211 err_out: 1212 kfree(rule_buf); 1213 1214 return ret; 1215 } 1216 1217 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, 1218 struct ethtool_rxnfc *rx_rings, 1219 u32 size) 1220 { 1221 int i; 1222 1223 if (copy_from_user(indir, useraddr, array_size(size, sizeof(indir[0])))) 1224 return -EFAULT; 1225 1226 /* Validate ring indices */ 1227 for (i = 0; i < size; i++) 1228 if (indir[i] >= rx_rings->data) 1229 return -EINVAL; 1230 1231 return 0; 1232 } 1233 1234 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; 1235 1236 void netdev_rss_key_fill(void *buffer, size_t len) 1237 { 1238 BUG_ON(len > sizeof(netdev_rss_key)); 1239 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); 1240 memcpy(buffer, netdev_rss_key, len); 1241 } 1242 EXPORT_SYMBOL(netdev_rss_key_fill); 1243 1244 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, 1245 void __user *useraddr) 1246 { 1247 struct ethtool_rxfh_param rxfh = {}; 1248 u32 user_size; 1249 int ret; 1250 1251 if (!dev->ethtool_ops->get_rxfh_indir_size || 1252 !dev->ethtool_ops->get_rxfh) 1253 return -EOPNOTSUPP; 1254 rxfh.indir_size = dev->ethtool_ops->get_rxfh_indir_size(dev); 1255 if (rxfh.indir_size == 0) 1256 return -EOPNOTSUPP; 1257 1258 if (copy_from_user(&user_size, 1259 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1260 sizeof(user_size))) 1261 return -EFAULT; 1262 1263 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), 1264 &rxfh.indir_size, sizeof(rxfh.indir_size))) 1265 return -EFAULT; 1266 1267 /* If the user buffer size is 0, this is just a query for the 1268 * device table size. Otherwise, if it's smaller than the 1269 * device table size it's an error. 1270 */ 1271 if (user_size < rxfh.indir_size) 1272 return user_size == 0 ? 0 : -EINVAL; 1273 1274 rxfh.indir = kcalloc(rxfh.indir_size, sizeof(rxfh.indir[0]), GFP_USER); 1275 if (!rxfh.indir) 1276 return -ENOMEM; 1277 1278 mutex_lock(&dev->ethtool->rss_lock); 1279 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh); 1280 mutex_unlock(&dev->ethtool->rss_lock); 1281 if (ret) 1282 goto out; 1283 if (copy_to_user(useraddr + 1284 offsetof(struct ethtool_rxfh_indir, ring_index[0]), 1285 rxfh.indir, rxfh.indir_size * sizeof(*rxfh.indir))) 1286 ret = -EFAULT; 1287 1288 out: 1289 kfree(rxfh.indir); 1290 return ret; 1291 } 1292 1293 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, 1294 void __user *useraddr) 1295 { 1296 const struct ethtool_ops *ops = dev->ethtool_ops; 1297 struct ethtool_rxfh_param rxfh_dev = {}; 1298 struct netlink_ext_ack *extack = NULL; 1299 struct ethtool_rxnfc rx_rings; 1300 u32 user_size, i; 1301 int ret; 1302 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); 1303 1304 if (!ops->get_rxfh_indir_size || !ops->set_rxfh || 1305 !ops->get_rxnfc) 1306 return -EOPNOTSUPP; 1307 1308 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1309 if (rxfh_dev.indir_size == 0) 1310 return -EOPNOTSUPP; 1311 1312 if (copy_from_user(&user_size, 1313 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1314 sizeof(user_size))) 1315 return -EFAULT; 1316 1317 if (user_size != 0 && user_size != rxfh_dev.indir_size) 1318 return -EINVAL; 1319 1320 rxfh_dev.indir = kcalloc(rxfh_dev.indir_size, 1321 sizeof(rxfh_dev.indir[0]), GFP_USER); 1322 if (!rxfh_dev.indir) 1323 return -ENOMEM; 1324 1325 rx_rings.cmd = ETHTOOL_GRXRINGS; 1326 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1327 if (ret) 1328 goto out; 1329 1330 if (user_size == 0) { 1331 u32 *indir = rxfh_dev.indir; 1332 1333 for (i = 0; i < rxfh_dev.indir_size; i++) 1334 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1335 } else { 1336 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1337 useraddr + ringidx_offset, 1338 &rx_rings, 1339 rxfh_dev.indir_size); 1340 if (ret) 1341 goto out; 1342 } 1343 1344 rxfh_dev.hfunc = ETH_RSS_HASH_NO_CHANGE; 1345 1346 mutex_lock(&dev->ethtool->rss_lock); 1347 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1348 if (ret) 1349 goto out_unlock; 1350 1351 /* indicate whether rxfh was set to default */ 1352 if (user_size == 0) 1353 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1354 else 1355 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1356 1357 out_unlock: 1358 mutex_unlock(&dev->ethtool->rss_lock); 1359 out: 1360 kfree(rxfh_dev.indir); 1361 return ret; 1362 } 1363 1364 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, 1365 void __user *useraddr) 1366 { 1367 const struct ethtool_ops *ops = dev->ethtool_ops; 1368 struct ethtool_rxfh_param rxfh_dev = {}; 1369 u32 user_indir_size, user_key_size; 1370 struct ethtool_rxfh_context *ctx; 1371 struct ethtool_rxfh rxfh; 1372 u32 indir_bytes; 1373 u8 *rss_config; 1374 u32 total_size; 1375 int ret; 1376 1377 if (!ops->get_rxfh) 1378 return -EOPNOTSUPP; 1379 1380 if (ops->get_rxfh_indir_size) 1381 rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); 1382 if (ops->get_rxfh_key_size) 1383 rxfh_dev.key_size = ops->get_rxfh_key_size(dev); 1384 1385 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1386 return -EFAULT; 1387 user_indir_size = rxfh.indir_size; 1388 user_key_size = rxfh.key_size; 1389 1390 /* Check that reserved fields are 0 for now */ 1391 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1392 return -EINVAL; 1393 /* Most drivers don't handle rss_context, check it's 0 as well */ 1394 if (rxfh.rss_context && !(ops->cap_rss_ctx_supported || 1395 ops->create_rxfh_context)) 1396 return -EOPNOTSUPP; 1397 1398 rxfh.indir_size = rxfh_dev.indir_size; 1399 rxfh.key_size = rxfh_dev.key_size; 1400 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) 1401 return -EFAULT; 1402 1403 if ((user_indir_size && user_indir_size != rxfh_dev.indir_size) || 1404 (user_key_size && user_key_size != rxfh_dev.key_size)) 1405 return -EINVAL; 1406 1407 indir_bytes = user_indir_size * sizeof(rxfh_dev.indir[0]); 1408 total_size = indir_bytes + user_key_size; 1409 rss_config = kzalloc(total_size, GFP_USER); 1410 if (!rss_config) 1411 return -ENOMEM; 1412 1413 if (user_indir_size) 1414 rxfh_dev.indir = (u32 *)rss_config; 1415 1416 if (user_key_size) 1417 rxfh_dev.key = rss_config + indir_bytes; 1418 1419 mutex_lock(&dev->ethtool->rss_lock); 1420 if (rxfh.rss_context) { 1421 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1422 if (!ctx) { 1423 ret = -ENOENT; 1424 goto out; 1425 } 1426 if (rxfh_dev.indir) 1427 memcpy(rxfh_dev.indir, ethtool_rxfh_context_indir(ctx), 1428 indir_bytes); 1429 if (!ops->rxfh_per_ctx_key) { 1430 rxfh_dev.key_size = 0; 1431 } else { 1432 if (rxfh_dev.key) 1433 memcpy(rxfh_dev.key, 1434 ethtool_rxfh_context_key(ctx), 1435 user_key_size); 1436 rxfh_dev.hfunc = ctx->hfunc; 1437 } 1438 rxfh_dev.input_xfrm = ctx->input_xfrm; 1439 ret = 0; 1440 } else { 1441 ret = dev->ethtool_ops->get_rxfh(dev, &rxfh_dev); 1442 if (ret) 1443 goto out; 1444 } 1445 1446 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), 1447 &rxfh_dev.hfunc, sizeof(rxfh.hfunc))) { 1448 ret = -EFAULT; 1449 } else if (copy_to_user(useraddr + 1450 offsetof(struct ethtool_rxfh, input_xfrm), 1451 &rxfh_dev.input_xfrm, 1452 sizeof(rxfh.input_xfrm))) { 1453 ret = -EFAULT; 1454 } else if (copy_to_user(useraddr + 1455 offsetof(struct ethtool_rxfh, key_size), 1456 &rxfh_dev.key_size, 1457 sizeof(rxfh.key_size))) { 1458 ret = -EFAULT; 1459 } else if (copy_to_user(useraddr + 1460 offsetof(struct ethtool_rxfh, rss_config[0]), 1461 rss_config, total_size)) { 1462 ret = -EFAULT; 1463 } 1464 out: 1465 mutex_unlock(&dev->ethtool->rss_lock); 1466 kfree(rss_config); 1467 1468 return ret; 1469 } 1470 1471 static struct ethtool_rxfh_context * 1472 ethtool_rxfh_ctx_alloc(const struct ethtool_ops *ops, 1473 u32 indir_size, u32 key_size) 1474 { 1475 size_t indir_bytes, flex_len, key_off, size; 1476 struct ethtool_rxfh_context *ctx; 1477 u32 priv_bytes, indir_max; 1478 u16 key_max; 1479 1480 key_max = max(key_size, ops->rxfh_key_space); 1481 indir_max = max(indir_size, ops->rxfh_indir_space); 1482 1483 priv_bytes = ALIGN(ops->rxfh_priv_size, sizeof(u32)); 1484 indir_bytes = array_size(indir_max, sizeof(u32)); 1485 1486 key_off = size_add(priv_bytes, indir_bytes); 1487 flex_len = size_add(key_off, key_max); 1488 size = struct_size_t(struct ethtool_rxfh_context, data, flex_len); 1489 1490 ctx = kzalloc(size, GFP_KERNEL_ACCOUNT); 1491 if (!ctx) 1492 return NULL; 1493 1494 ctx->indir_size = indir_size; 1495 ctx->key_size = key_size; 1496 ctx->key_off = key_off; 1497 ctx->priv_size = ops->rxfh_priv_size; 1498 1499 ctx->hfunc = ETH_RSS_HASH_NO_CHANGE; 1500 ctx->input_xfrm = RXH_XFRM_NO_CHANGE; 1501 1502 return ctx; 1503 } 1504 1505 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, 1506 void __user *useraddr) 1507 { 1508 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); 1509 const struct ethtool_ops *ops = dev->ethtool_ops; 1510 u32 dev_indir_size = 0, dev_key_size = 0, i; 1511 u32 user_indir_len = 0, indir_bytes = 0; 1512 struct ethtool_rxfh_param rxfh_dev = {}; 1513 struct ethtool_rxfh_context *ctx = NULL; 1514 struct netlink_ext_ack *extack = NULL; 1515 struct ethtool_rxnfc rx_rings; 1516 struct ethtool_rxfh rxfh; 1517 bool create = false; 1518 bool mod = false; 1519 u8 *rss_config; 1520 int ret; 1521 1522 if (!ops->get_rxnfc || !ops->get_rxfh_fields || !ops->set_rxfh) 1523 return -EOPNOTSUPP; 1524 1525 if (ops->get_rxfh_indir_size) 1526 dev_indir_size = ops->get_rxfh_indir_size(dev); 1527 if (ops->get_rxfh_key_size) 1528 dev_key_size = ops->get_rxfh_key_size(dev); 1529 1530 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1531 return -EFAULT; 1532 1533 /* Check that reserved fields are 0 for now */ 1534 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) 1535 return -EINVAL; 1536 /* Most drivers don't handle rss_context, check it's 0 as well */ 1537 if (rxfh.rss_context && !(ops->cap_rss_ctx_supported || 1538 ops->create_rxfh_context)) 1539 return -EOPNOTSUPP; 1540 /* Check input data transformation capabilities */ 1541 if (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_SYM_XOR && 1542 rxfh.input_xfrm != RXH_XFRM_SYM_OR_XOR && 1543 rxfh.input_xfrm != RXH_XFRM_NO_CHANGE) 1544 return -EINVAL; 1545 if (rxfh.input_xfrm != RXH_XFRM_NO_CHANGE && 1546 rxfh.input_xfrm & ~ops->supported_input_xfrm) 1547 return -EOPNOTSUPP; 1548 create = rxfh.rss_context == ETH_RXFH_CONTEXT_ALLOC; 1549 1550 if ((rxfh.indir_size && 1551 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && 1552 rxfh.indir_size != dev_indir_size) || 1553 (rxfh.key_size && rxfh.key_size != dev_key_size)) 1554 return -EINVAL; 1555 1556 /* Must request at least one change: indir size, hash key, function 1557 * or input transformation. 1558 * There's no need for any of it in case of context creation. 1559 */ 1560 if (!create && 1561 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && 1562 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE && 1563 rxfh.input_xfrm == RXH_XFRM_NO_CHANGE)) 1564 return -EINVAL; 1565 1566 indir_bytes = dev_indir_size * sizeof(rxfh_dev.indir[0]); 1567 1568 /* Check settings which may be global rather than per RSS-context */ 1569 if (rxfh.rss_context && !ops->rxfh_per_ctx_key) 1570 if (rxfh.key_size || 1571 (rxfh.hfunc && rxfh.hfunc != ETH_RSS_HASH_NO_CHANGE) || 1572 (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_NO_CHANGE)) 1573 return -EOPNOTSUPP; 1574 1575 rss_config = kzalloc(indir_bytes + dev_key_size, GFP_USER); 1576 if (!rss_config) 1577 return -ENOMEM; 1578 1579 rx_rings.cmd = ETHTOOL_GRXRINGS; 1580 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1581 if (ret) 1582 goto out_free; 1583 1584 /* rxfh.indir_size == 0 means reset the indir table to default (master 1585 * context) or delete the context (other RSS contexts). 1586 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. 1587 */ 1588 if (rxfh.indir_size && 1589 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { 1590 user_indir_len = indir_bytes; 1591 rxfh_dev.indir = (u32 *)rss_config; 1592 rxfh_dev.indir_size = dev_indir_size; 1593 ret = ethtool_copy_validate_indir(rxfh_dev.indir, 1594 useraddr + rss_cfg_offset, 1595 &rx_rings, 1596 rxfh.indir_size); 1597 if (ret) 1598 goto out_free; 1599 } else if (rxfh.indir_size == 0) { 1600 if (rxfh.rss_context == 0) { 1601 u32 *indir; 1602 1603 rxfh_dev.indir = (u32 *)rss_config; 1604 rxfh_dev.indir_size = dev_indir_size; 1605 indir = rxfh_dev.indir; 1606 for (i = 0; i < dev_indir_size; i++) 1607 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1608 } else { 1609 rxfh_dev.rss_delete = true; 1610 } 1611 } 1612 1613 if (rxfh.key_size) { 1614 rxfh_dev.key_size = dev_key_size; 1615 rxfh_dev.key = rss_config + indir_bytes; 1616 if (copy_from_user(rxfh_dev.key, 1617 useraddr + rss_cfg_offset + user_indir_len, 1618 rxfh.key_size)) { 1619 ret = -EFAULT; 1620 goto out_free; 1621 } 1622 } 1623 1624 mutex_lock(&dev->ethtool->rss_lock); 1625 1626 ret = ethtool_check_flow_types(dev, rxfh.input_xfrm); 1627 if (ret) 1628 goto out_unlock; 1629 1630 if (rxfh.rss_context && rxfh_dev.rss_delete) { 1631 ret = ethtool_check_rss_ctx_busy(dev, rxfh.rss_context); 1632 if (ret) 1633 goto out_unlock; 1634 } 1635 1636 if (create) { 1637 if (rxfh_dev.rss_delete) { 1638 ret = -EINVAL; 1639 goto out_unlock; 1640 } 1641 ctx = ethtool_rxfh_ctx_alloc(ops, dev_indir_size, dev_key_size); 1642 if (!ctx) { 1643 ret = -ENOMEM; 1644 goto out_unlock; 1645 } 1646 1647 if (ops->create_rxfh_context) { 1648 u32 limit = ops->rxfh_max_num_contexts ?: U32_MAX; 1649 u32 ctx_id; 1650 1651 /* driver uses new API, core allocates ID */ 1652 ret = xa_alloc(&dev->ethtool->rss_ctx, &ctx_id, ctx, 1653 XA_LIMIT(1, limit - 1), 1654 GFP_KERNEL_ACCOUNT); 1655 if (ret < 0) { 1656 kfree(ctx); 1657 goto out_unlock; 1658 } 1659 WARN_ON(!ctx_id); /* can't happen */ 1660 rxfh.rss_context = ctx_id; 1661 } 1662 } else if (rxfh.rss_context) { 1663 ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); 1664 if (!ctx) { 1665 ret = -ENOENT; 1666 goto out_unlock; 1667 } 1668 } 1669 rxfh_dev.hfunc = rxfh.hfunc; 1670 rxfh_dev.rss_context = rxfh.rss_context; 1671 rxfh_dev.input_xfrm = rxfh.input_xfrm; 1672 1673 if (rxfh.rss_context && ops->create_rxfh_context) { 1674 if (create) { 1675 ret = ops->create_rxfh_context(dev, ctx, &rxfh_dev, 1676 extack); 1677 /* Make sure driver populates defaults */ 1678 WARN_ON_ONCE(!ret && !rxfh_dev.key && 1679 ops->rxfh_per_ctx_key && 1680 !memchr_inv(ethtool_rxfh_context_key(ctx), 1681 0, ctx->key_size)); 1682 } else if (rxfh_dev.rss_delete) { 1683 ret = ops->remove_rxfh_context(dev, ctx, 1684 rxfh.rss_context, 1685 extack); 1686 } else { 1687 ret = ops->modify_rxfh_context(dev, ctx, &rxfh_dev, 1688 extack); 1689 } 1690 } else { 1691 ret = ops->set_rxfh(dev, &rxfh_dev, extack); 1692 } 1693 if (ret) { 1694 if (create) { 1695 /* failed to create, free our new tracking entry */ 1696 if (ops->create_rxfh_context) 1697 xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context); 1698 kfree(ctx); 1699 } 1700 goto out_unlock; 1701 } 1702 mod = !create && !rxfh_dev.rss_delete; 1703 1704 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), 1705 &rxfh_dev.rss_context, sizeof(rxfh_dev.rss_context))) 1706 ret = -EFAULT; 1707 1708 if (!rxfh_dev.rss_context) { 1709 /* indicate whether rxfh was set to default */ 1710 if (rxfh.indir_size == 0) 1711 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1712 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1713 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1714 } 1715 /* Update rss_ctx tracking */ 1716 if (create && !ops->create_rxfh_context) { 1717 /* driver uses old API, it chose context ID */ 1718 if (WARN_ON(xa_load(&dev->ethtool->rss_ctx, rxfh_dev.rss_context))) { 1719 /* context ID reused, our tracking is screwed */ 1720 kfree(ctx); 1721 goto out_unlock; 1722 } 1723 /* Allocate the exact ID the driver gave us */ 1724 if (xa_is_err(xa_store(&dev->ethtool->rss_ctx, rxfh_dev.rss_context, 1725 ctx, GFP_KERNEL))) { 1726 kfree(ctx); 1727 goto out_unlock; 1728 } 1729 1730 /* Fetch the defaults for the old API, in the new API drivers 1731 * should write defaults into ctx themselves. 1732 */ 1733 rxfh_dev.indir = (u32 *)rss_config; 1734 rxfh_dev.indir_size = dev_indir_size; 1735 1736 rxfh_dev.key = rss_config + indir_bytes; 1737 rxfh_dev.key_size = dev_key_size; 1738 1739 ret = ops->get_rxfh(dev, &rxfh_dev); 1740 if (WARN_ON(ret)) { 1741 xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context); 1742 kfree(ctx); 1743 goto out_unlock; 1744 } 1745 } 1746 if (rxfh_dev.rss_delete) { 1747 WARN_ON(xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context) != ctx); 1748 kfree(ctx); 1749 } else if (ctx) { 1750 if (rxfh_dev.indir) { 1751 for (i = 0; i < dev_indir_size; i++) 1752 ethtool_rxfh_context_indir(ctx)[i] = rxfh_dev.indir[i]; 1753 ctx->indir_configured = 1754 rxfh.indir_size && 1755 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE; 1756 } 1757 if (rxfh_dev.key) { 1758 memcpy(ethtool_rxfh_context_key(ctx), rxfh_dev.key, 1759 dev_key_size); 1760 ctx->key_configured = !!rxfh.key_size; 1761 } 1762 if (rxfh_dev.hfunc != ETH_RSS_HASH_NO_CHANGE) 1763 ctx->hfunc = rxfh_dev.hfunc; 1764 if (rxfh_dev.input_xfrm != RXH_XFRM_NO_CHANGE) 1765 ctx->input_xfrm = rxfh_dev.input_xfrm; 1766 } 1767 1768 out_unlock: 1769 mutex_unlock(&dev->ethtool->rss_lock); 1770 out_free: 1771 kfree(rss_config); 1772 if (mod) 1773 ethtool_rss_notify(dev, rxfh.rss_context); 1774 return ret; 1775 } 1776 1777 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) 1778 { 1779 struct ethtool_regs regs; 1780 const struct ethtool_ops *ops = dev->ethtool_ops; 1781 void *regbuf; 1782 int reglen, ret; 1783 1784 if (!ops->get_regs || !ops->get_regs_len) 1785 return -EOPNOTSUPP; 1786 1787 if (copy_from_user(®s, useraddr, sizeof(regs))) 1788 return -EFAULT; 1789 1790 reglen = ops->get_regs_len(dev); 1791 if (reglen <= 0) 1792 return reglen; 1793 1794 if (regs.len > reglen) 1795 regs.len = reglen; 1796 1797 regbuf = vzalloc(reglen); 1798 if (!regbuf) 1799 return -ENOMEM; 1800 1801 if (regs.len < reglen) 1802 reglen = regs.len; 1803 1804 ops->get_regs(dev, ®s, regbuf); 1805 1806 ret = -EFAULT; 1807 if (copy_to_user(useraddr, ®s, sizeof(regs))) 1808 goto out; 1809 useraddr += offsetof(struct ethtool_regs, data); 1810 if (copy_to_user(useraddr, regbuf, reglen)) 1811 goto out; 1812 ret = 0; 1813 1814 out: 1815 vfree(regbuf); 1816 return ret; 1817 } 1818 1819 static int ethtool_reset(struct net_device *dev, char __user *useraddr) 1820 { 1821 struct ethtool_value reset; 1822 int ret; 1823 1824 if (!dev->ethtool_ops->reset) 1825 return -EOPNOTSUPP; 1826 1827 if (dev->ethtool->module_fw_flash_in_progress) 1828 return -EBUSY; 1829 1830 if (copy_from_user(&reset, useraddr, sizeof(reset))) 1831 return -EFAULT; 1832 1833 ret = dev->ethtool_ops->reset(dev, &reset.data); 1834 if (ret) 1835 return ret; 1836 1837 if (copy_to_user(useraddr, &reset, sizeof(reset))) 1838 return -EFAULT; 1839 return 0; 1840 } 1841 1842 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) 1843 { 1844 struct ethtool_wolinfo wol; 1845 1846 if (!dev->ethtool_ops->get_wol) 1847 return -EOPNOTSUPP; 1848 1849 memset(&wol, 0, sizeof(struct ethtool_wolinfo)); 1850 wol.cmd = ETHTOOL_GWOL; 1851 dev->ethtool_ops->get_wol(dev, &wol); 1852 1853 if (copy_to_user(useraddr, &wol, sizeof(wol))) 1854 return -EFAULT; 1855 return 0; 1856 } 1857 1858 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) 1859 { 1860 struct ethtool_wolinfo wol, cur_wol; 1861 int ret; 1862 1863 if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol) 1864 return -EOPNOTSUPP; 1865 1866 memset(&cur_wol, 0, sizeof(struct ethtool_wolinfo)); 1867 cur_wol.cmd = ETHTOOL_GWOL; 1868 dev->ethtool_ops->get_wol(dev, &cur_wol); 1869 1870 if (copy_from_user(&wol, useraddr, sizeof(wol))) 1871 return -EFAULT; 1872 1873 if (wol.wolopts & ~cur_wol.supported) 1874 return -EINVAL; 1875 1876 if (wol.wolopts == cur_wol.wolopts && 1877 !memcmp(wol.sopass, cur_wol.sopass, sizeof(wol.sopass))) 1878 return 0; 1879 1880 ret = dev->ethtool_ops->set_wol(dev, &wol); 1881 if (ret) 1882 return ret; 1883 1884 dev->ethtool->wol_enabled = !!wol.wolopts; 1885 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF); 1886 1887 return 0; 1888 } 1889 1890 static void eee_to_keee(struct ethtool_keee *keee, 1891 const struct ethtool_eee *eee) 1892 { 1893 memset(keee, 0, sizeof(*keee)); 1894 1895 keee->eee_enabled = eee->eee_enabled; 1896 keee->tx_lpi_enabled = eee->tx_lpi_enabled; 1897 keee->tx_lpi_timer = eee->tx_lpi_timer; 1898 1899 ethtool_convert_legacy_u32_to_link_mode(keee->advertised, 1900 eee->advertised); 1901 } 1902 1903 static void keee_to_eee(struct ethtool_eee *eee, 1904 const struct ethtool_keee *keee) 1905 { 1906 bool overflow; 1907 1908 memset(eee, 0, sizeof(*eee)); 1909 1910 eee->eee_active = keee->eee_active; 1911 eee->eee_enabled = keee->eee_enabled; 1912 eee->tx_lpi_enabled = keee->tx_lpi_enabled; 1913 eee->tx_lpi_timer = keee->tx_lpi_timer; 1914 1915 overflow = !ethtool_convert_link_mode_to_legacy_u32(&eee->supported, 1916 keee->supported); 1917 ethtool_convert_link_mode_to_legacy_u32(&eee->advertised, 1918 keee->advertised); 1919 ethtool_convert_link_mode_to_legacy_u32(&eee->lp_advertised, 1920 keee->lp_advertised); 1921 if (overflow) 1922 pr_warn("Ethtool ioctl interface doesn't support passing EEE linkmodes beyond bit 32\n"); 1923 } 1924 1925 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) 1926 { 1927 struct ethtool_keee keee; 1928 struct ethtool_eee eee; 1929 int rc; 1930 1931 if (!dev->ethtool_ops->get_eee) 1932 return -EOPNOTSUPP; 1933 1934 memset(&keee, 0, sizeof(keee)); 1935 rc = dev->ethtool_ops->get_eee(dev, &keee); 1936 if (rc) 1937 return rc; 1938 1939 keee_to_eee(&eee, &keee); 1940 if (copy_to_user(useraddr, &eee, sizeof(eee))) 1941 return -EFAULT; 1942 1943 return 0; 1944 } 1945 1946 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) 1947 { 1948 struct ethtool_keee keee; 1949 struct ethtool_eee eee; 1950 int ret; 1951 1952 if (!dev->ethtool_ops->set_eee) 1953 return -EOPNOTSUPP; 1954 1955 if (copy_from_user(&eee, useraddr, sizeof(eee))) 1956 return -EFAULT; 1957 1958 eee_to_keee(&keee, &eee); 1959 ret = dev->ethtool_ops->set_eee(dev, &keee); 1960 if (!ret) 1961 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF); 1962 return ret; 1963 } 1964 1965 static int ethtool_nway_reset(struct net_device *dev) 1966 { 1967 if (!dev->ethtool_ops->nway_reset) 1968 return -EOPNOTSUPP; 1969 1970 return dev->ethtool_ops->nway_reset(dev); 1971 } 1972 1973 static int ethtool_get_link(struct net_device *dev, char __user *useraddr) 1974 { 1975 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; 1976 int link = __ethtool_get_link(dev); 1977 1978 if (link < 0) 1979 return link; 1980 1981 edata.data = link; 1982 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1983 return -EFAULT; 1984 return 0; 1985 } 1986 1987 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, 1988 int (*getter)(struct net_device *, 1989 struct ethtool_eeprom *, u8 *), 1990 u32 total_len) 1991 { 1992 struct ethtool_eeprom eeprom; 1993 void __user *userbuf = useraddr + sizeof(eeprom); 1994 u32 bytes_remaining; 1995 u8 *data; 1996 int ret = 0; 1997 1998 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1999 return -EFAULT; 2000 2001 /* Check for wrap and zero */ 2002 if (eeprom.offset + eeprom.len <= eeprom.offset) 2003 return -EINVAL; 2004 2005 /* Check for exceeding total eeprom len */ 2006 if (eeprom.offset + eeprom.len > total_len) 2007 return -EINVAL; 2008 2009 data = kzalloc(PAGE_SIZE, GFP_USER); 2010 if (!data) 2011 return -ENOMEM; 2012 2013 bytes_remaining = eeprom.len; 2014 while (bytes_remaining > 0) { 2015 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 2016 2017 ret = getter(dev, &eeprom, data); 2018 if (ret) 2019 break; 2020 if (!eeprom.len) { 2021 ret = -EIO; 2022 break; 2023 } 2024 if (copy_to_user(userbuf, data, eeprom.len)) { 2025 ret = -EFAULT; 2026 break; 2027 } 2028 userbuf += eeprom.len; 2029 eeprom.offset += eeprom.len; 2030 bytes_remaining -= eeprom.len; 2031 } 2032 2033 eeprom.len = userbuf - (useraddr + sizeof(eeprom)); 2034 eeprom.offset -= eeprom.len; 2035 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) 2036 ret = -EFAULT; 2037 2038 kfree(data); 2039 return ret; 2040 } 2041 2042 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) 2043 { 2044 const struct ethtool_ops *ops = dev->ethtool_ops; 2045 2046 if (!ops->get_eeprom || !ops->get_eeprom_len || 2047 !ops->get_eeprom_len(dev)) 2048 return -EOPNOTSUPP; 2049 2050 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, 2051 ops->get_eeprom_len(dev)); 2052 } 2053 2054 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) 2055 { 2056 struct ethtool_eeprom eeprom; 2057 const struct ethtool_ops *ops = dev->ethtool_ops; 2058 void __user *userbuf = useraddr + sizeof(eeprom); 2059 u32 bytes_remaining; 2060 u8 *data; 2061 int ret = 0; 2062 2063 if (!ops->set_eeprom || !ops->get_eeprom_len || 2064 !ops->get_eeprom_len(dev)) 2065 return -EOPNOTSUPP; 2066 2067 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 2068 return -EFAULT; 2069 2070 /* Check for wrap and zero */ 2071 if (eeprom.offset + eeprom.len <= eeprom.offset) 2072 return -EINVAL; 2073 2074 /* Check for exceeding total eeprom len */ 2075 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) 2076 return -EINVAL; 2077 2078 data = kzalloc(PAGE_SIZE, GFP_USER); 2079 if (!data) 2080 return -ENOMEM; 2081 2082 bytes_remaining = eeprom.len; 2083 while (bytes_remaining > 0) { 2084 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 2085 2086 if (copy_from_user(data, userbuf, eeprom.len)) { 2087 ret = -EFAULT; 2088 break; 2089 } 2090 ret = ops->set_eeprom(dev, &eeprom, data); 2091 if (ret) 2092 break; 2093 userbuf += eeprom.len; 2094 eeprom.offset += eeprom.len; 2095 bytes_remaining -= eeprom.len; 2096 } 2097 2098 kfree(data); 2099 return ret; 2100 } 2101 2102 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, 2103 void __user *useraddr) 2104 { 2105 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2106 struct kernel_ethtool_coalesce kernel_coalesce = {}; 2107 int ret; 2108 2109 if (!dev->ethtool_ops->get_coalesce) 2110 return -EOPNOTSUPP; 2111 2112 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 2113 NULL); 2114 if (ret) 2115 return ret; 2116 2117 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2118 return -EFAULT; 2119 return 0; 2120 } 2121 2122 static bool 2123 ethtool_set_coalesce_supported(struct net_device *dev, 2124 struct ethtool_coalesce *coalesce) 2125 { 2126 u32 supported_params = dev->ethtool_ops->supported_coalesce_params; 2127 u32 nonzero_params = 0; 2128 2129 if (coalesce->rx_coalesce_usecs) 2130 nonzero_params |= ETHTOOL_COALESCE_RX_USECS; 2131 if (coalesce->rx_max_coalesced_frames) 2132 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; 2133 if (coalesce->rx_coalesce_usecs_irq) 2134 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; 2135 if (coalesce->rx_max_coalesced_frames_irq) 2136 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; 2137 if (coalesce->tx_coalesce_usecs) 2138 nonzero_params |= ETHTOOL_COALESCE_TX_USECS; 2139 if (coalesce->tx_max_coalesced_frames) 2140 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; 2141 if (coalesce->tx_coalesce_usecs_irq) 2142 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; 2143 if (coalesce->tx_max_coalesced_frames_irq) 2144 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; 2145 if (coalesce->stats_block_coalesce_usecs) 2146 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; 2147 if (coalesce->use_adaptive_rx_coalesce) 2148 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; 2149 if (coalesce->use_adaptive_tx_coalesce) 2150 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; 2151 if (coalesce->pkt_rate_low) 2152 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; 2153 if (coalesce->rx_coalesce_usecs_low) 2154 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; 2155 if (coalesce->rx_max_coalesced_frames_low) 2156 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; 2157 if (coalesce->tx_coalesce_usecs_low) 2158 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; 2159 if (coalesce->tx_max_coalesced_frames_low) 2160 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; 2161 if (coalesce->pkt_rate_high) 2162 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; 2163 if (coalesce->rx_coalesce_usecs_high) 2164 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; 2165 if (coalesce->rx_max_coalesced_frames_high) 2166 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; 2167 if (coalesce->tx_coalesce_usecs_high) 2168 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; 2169 if (coalesce->tx_max_coalesced_frames_high) 2170 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; 2171 if (coalesce->rate_sample_interval) 2172 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; 2173 2174 return (supported_params & nonzero_params) == nonzero_params; 2175 } 2176 2177 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, 2178 void __user *useraddr) 2179 { 2180 struct kernel_ethtool_coalesce kernel_coalesce = {}; 2181 struct ethtool_coalesce coalesce; 2182 int ret; 2183 2184 if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce) 2185 return -EOPNOTSUPP; 2186 2187 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 2188 NULL); 2189 if (ret) 2190 return ret; 2191 2192 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) 2193 return -EFAULT; 2194 2195 if (!ethtool_set_coalesce_supported(dev, &coalesce)) 2196 return -EOPNOTSUPP; 2197 2198 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, 2199 NULL); 2200 if (!ret) 2201 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF); 2202 return ret; 2203 } 2204 2205 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) 2206 { 2207 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; 2208 struct kernel_ethtool_ringparam kernel_ringparam = {}; 2209 2210 if (!dev->ethtool_ops->get_ringparam) 2211 return -EOPNOTSUPP; 2212 2213 dev->ethtool_ops->get_ringparam(dev, &ringparam, 2214 &kernel_ringparam, NULL); 2215 2216 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) 2217 return -EFAULT; 2218 return 0; 2219 } 2220 2221 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) 2222 { 2223 struct kernel_ethtool_ringparam kernel_ringparam; 2224 struct ethtool_ringparam ringparam, max; 2225 int ret; 2226 2227 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) 2228 return -EOPNOTSUPP; 2229 2230 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) 2231 return -EFAULT; 2232 2233 ethtool_ringparam_get_cfg(dev, &max, &kernel_ringparam, NULL); 2234 2235 /* ensure new ring parameters are within the maximums */ 2236 if (ringparam.rx_pending > max.rx_max_pending || 2237 ringparam.rx_mini_pending > max.rx_mini_max_pending || 2238 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || 2239 ringparam.tx_pending > max.tx_max_pending) 2240 return -EINVAL; 2241 2242 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, 2243 &kernel_ringparam, NULL); 2244 if (!ret) 2245 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF); 2246 return ret; 2247 } 2248 2249 static noinline_for_stack int ethtool_get_channels(struct net_device *dev, 2250 void __user *useraddr) 2251 { 2252 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; 2253 2254 if (!dev->ethtool_ops->get_channels) 2255 return -EOPNOTSUPP; 2256 2257 dev->ethtool_ops->get_channels(dev, &channels); 2258 2259 if (copy_to_user(useraddr, &channels, sizeof(channels))) 2260 return -EFAULT; 2261 return 0; 2262 } 2263 2264 static noinline_for_stack int ethtool_set_channels(struct net_device *dev, 2265 void __user *useraddr) 2266 { 2267 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; 2268 u16 from_channel, to_channel; 2269 unsigned int i; 2270 int ret; 2271 2272 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) 2273 return -EOPNOTSUPP; 2274 2275 if (copy_from_user(&channels, useraddr, sizeof(channels))) 2276 return -EFAULT; 2277 2278 dev->ethtool_ops->get_channels(dev, &curr); 2279 2280 if (channels.rx_count == curr.rx_count && 2281 channels.tx_count == curr.tx_count && 2282 channels.combined_count == curr.combined_count && 2283 channels.other_count == curr.other_count) 2284 return 0; 2285 2286 /* ensure new counts are within the maximums */ 2287 if (channels.rx_count > curr.max_rx || 2288 channels.tx_count > curr.max_tx || 2289 channels.combined_count > curr.max_combined || 2290 channels.other_count > curr.max_other) 2291 return -EINVAL; 2292 2293 /* ensure there is at least one RX and one TX channel */ 2294 if (!channels.combined_count && 2295 (!channels.rx_count || !channels.tx_count)) 2296 return -EINVAL; 2297 2298 ret = ethtool_check_max_channel(dev, channels, NULL); 2299 if (ret) 2300 return ret; 2301 2302 /* Disabling channels, query zero-copy AF_XDP sockets */ 2303 from_channel = channels.combined_count + 2304 min(channels.rx_count, channels.tx_count); 2305 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); 2306 for (i = from_channel; i < to_channel; i++) 2307 if (xsk_get_pool_from_qid(dev, i)) 2308 return -EINVAL; 2309 2310 ret = dev->ethtool_ops->set_channels(dev, &channels); 2311 if (!ret) 2312 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF); 2313 return ret; 2314 } 2315 2316 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) 2317 { 2318 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; 2319 2320 if (!dev->ethtool_ops->get_pauseparam) 2321 return -EOPNOTSUPP; 2322 2323 dev->ethtool_ops->get_pauseparam(dev, &pauseparam); 2324 2325 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) 2326 return -EFAULT; 2327 return 0; 2328 } 2329 2330 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) 2331 { 2332 struct ethtool_pauseparam pauseparam; 2333 int ret; 2334 2335 if (!dev->ethtool_ops->set_pauseparam) 2336 return -EOPNOTSUPP; 2337 2338 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) 2339 return -EFAULT; 2340 2341 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); 2342 if (!ret) 2343 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF); 2344 return ret; 2345 } 2346 2347 static int ethtool_self_test(struct net_device *dev, char __user *useraddr) 2348 { 2349 struct ethtool_test test; 2350 const struct ethtool_ops *ops = dev->ethtool_ops; 2351 u64 *data; 2352 int ret, test_len; 2353 2354 if (!ops->self_test || !ops->get_sset_count) 2355 return -EOPNOTSUPP; 2356 2357 test_len = ops->get_sset_count(dev, ETH_SS_TEST); 2358 if (test_len < 0) 2359 return test_len; 2360 WARN_ON(test_len == 0); 2361 2362 if (copy_from_user(&test, useraddr, sizeof(test))) 2363 return -EFAULT; 2364 2365 test.len = test_len; 2366 data = kcalloc(test_len, sizeof(u64), GFP_USER); 2367 if (!data) 2368 return -ENOMEM; 2369 2370 netif_testing_on(dev); 2371 ops->self_test(dev, &test, data); 2372 netif_testing_off(dev); 2373 2374 ret = -EFAULT; 2375 if (copy_to_user(useraddr, &test, sizeof(test))) 2376 goto out; 2377 useraddr += sizeof(test); 2378 if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) 2379 goto out; 2380 ret = 0; 2381 2382 out: 2383 kfree(data); 2384 return ret; 2385 } 2386 2387 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) 2388 { 2389 struct ethtool_gstrings gstrings; 2390 u8 *data; 2391 int ret; 2392 2393 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) 2394 return -EFAULT; 2395 2396 ret = __ethtool_get_sset_count(dev, gstrings.string_set); 2397 if (ret < 0) 2398 return ret; 2399 if (ret > S32_MAX / ETH_GSTRING_LEN) 2400 return -ENOMEM; 2401 WARN_ON_ONCE(!ret); 2402 2403 gstrings.len = ret; 2404 2405 if (gstrings.len) { 2406 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); 2407 if (!data) 2408 return -ENOMEM; 2409 2410 __ethtool_get_strings(dev, gstrings.string_set, data); 2411 } else { 2412 data = NULL; 2413 } 2414 2415 ret = -EFAULT; 2416 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) 2417 goto out; 2418 useraddr += sizeof(gstrings); 2419 if (gstrings.len && 2420 copy_to_user(useraddr, data, 2421 array_size(gstrings.len, ETH_GSTRING_LEN))) 2422 goto out; 2423 ret = 0; 2424 2425 out: 2426 vfree(data); 2427 return ret; 2428 } 2429 2430 __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) 2431 { 2432 va_list args; 2433 2434 va_start(args, fmt); 2435 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); 2436 va_end(args); 2437 2438 *data += ETH_GSTRING_LEN; 2439 } 2440 EXPORT_SYMBOL(ethtool_sprintf); 2441 2442 void ethtool_puts(u8 **data, const char *str) 2443 { 2444 strscpy(*data, str, ETH_GSTRING_LEN); 2445 *data += ETH_GSTRING_LEN; 2446 } 2447 EXPORT_SYMBOL(ethtool_puts); 2448 2449 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) 2450 { 2451 struct ethtool_value id; 2452 static bool busy; 2453 const struct ethtool_ops *ops = dev->ethtool_ops; 2454 netdevice_tracker dev_tracker; 2455 int rc; 2456 2457 if (!ops->set_phys_id) 2458 return -EOPNOTSUPP; 2459 2460 if (busy) 2461 return -EBUSY; 2462 2463 if (copy_from_user(&id, useraddr, sizeof(id))) 2464 return -EFAULT; 2465 2466 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); 2467 if (rc < 0) 2468 return rc; 2469 2470 /* Drop the RTNL lock while waiting, but prevent reentry or 2471 * removal of the device. 2472 */ 2473 busy = true; 2474 netdev_hold(dev, &dev_tracker, GFP_KERNEL); 2475 netdev_unlock_ops(dev); 2476 rtnl_unlock(); 2477 2478 if (rc == 0) { 2479 /* Driver will handle this itself */ 2480 schedule_timeout_interruptible( 2481 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); 2482 } else { 2483 /* Driver expects to be called at twice the frequency in rc */ 2484 int n = rc * 2, interval = HZ / n; 2485 u64 count = mul_u32_u32(n, id.data); 2486 u64 i = 0; 2487 2488 do { 2489 rtnl_lock(); 2490 netdev_lock_ops(dev); 2491 rc = ops->set_phys_id(dev, 2492 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); 2493 netdev_unlock_ops(dev); 2494 rtnl_unlock(); 2495 if (rc) 2496 break; 2497 schedule_timeout_interruptible(interval); 2498 } while (!signal_pending(current) && (!id.data || i < count)); 2499 } 2500 2501 rtnl_lock(); 2502 netdev_lock_ops(dev); 2503 netdev_put(dev, &dev_tracker); 2504 busy = false; 2505 2506 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); 2507 return rc; 2508 } 2509 2510 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) 2511 { 2512 struct ethtool_stats stats; 2513 const struct ethtool_ops *ops = dev->ethtool_ops; 2514 u64 *data; 2515 int ret, n_stats; 2516 2517 if (!ops->get_ethtool_stats || !ops->get_sset_count) 2518 return -EOPNOTSUPP; 2519 2520 n_stats = ops->get_sset_count(dev, ETH_SS_STATS); 2521 if (n_stats < 0) 2522 return n_stats; 2523 if (n_stats > S32_MAX / sizeof(u64)) 2524 return -ENOMEM; 2525 WARN_ON_ONCE(!n_stats); 2526 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2527 return -EFAULT; 2528 2529 stats.n_stats = n_stats; 2530 2531 if (n_stats) { 2532 data = vzalloc(array_size(n_stats, sizeof(u64))); 2533 if (!data) 2534 return -ENOMEM; 2535 ops->get_ethtool_stats(dev, &stats, data); 2536 } else { 2537 data = NULL; 2538 } 2539 2540 ret = -EFAULT; 2541 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2542 goto out; 2543 useraddr += sizeof(stats); 2544 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) 2545 goto out; 2546 ret = 0; 2547 2548 out: 2549 vfree(data); 2550 return ret; 2551 } 2552 2553 static int ethtool_vzalloc_stats_array(int n_stats, u64 **data) 2554 { 2555 if (n_stats < 0) 2556 return n_stats; 2557 if (n_stats > S32_MAX / sizeof(u64)) 2558 return -ENOMEM; 2559 if (WARN_ON_ONCE(!n_stats)) 2560 return -EOPNOTSUPP; 2561 2562 *data = vzalloc(array_size(n_stats, sizeof(u64))); 2563 if (!*data) 2564 return -ENOMEM; 2565 2566 return 0; 2567 } 2568 2569 static int ethtool_get_phy_stats_phydev(struct phy_device *phydev, 2570 struct ethtool_stats *stats, 2571 u64 **data) 2572 { 2573 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 2574 int n_stats, ret; 2575 2576 if (!phy_ops || !phy_ops->get_sset_count || !phy_ops->get_stats) 2577 return -EOPNOTSUPP; 2578 2579 n_stats = phy_ops->get_sset_count(phydev); 2580 2581 ret = ethtool_vzalloc_stats_array(n_stats, data); 2582 if (ret) 2583 return ret; 2584 2585 stats->n_stats = n_stats; 2586 return phy_ops->get_stats(phydev, stats, *data); 2587 } 2588 2589 static int ethtool_get_phy_stats_ethtool(struct net_device *dev, 2590 struct ethtool_stats *stats, 2591 u64 **data) 2592 { 2593 const struct ethtool_ops *ops = dev->ethtool_ops; 2594 int n_stats, ret; 2595 2596 if (!ops || !ops->get_sset_count || !ops->get_ethtool_phy_stats) 2597 return -EOPNOTSUPP; 2598 2599 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); 2600 2601 ret = ethtool_vzalloc_stats_array(n_stats, data); 2602 if (ret) 2603 return ret; 2604 2605 stats->n_stats = n_stats; 2606 ops->get_ethtool_phy_stats(dev, stats, *data); 2607 2608 return 0; 2609 } 2610 2611 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) 2612 { 2613 struct phy_device *phydev = dev->phydev; 2614 struct ethtool_stats stats; 2615 u64 *data = NULL; 2616 int ret = -EOPNOTSUPP; 2617 2618 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2619 return -EFAULT; 2620 2621 if (phydev) 2622 ret = ethtool_get_phy_stats_phydev(phydev, &stats, &data); 2623 2624 if (ret == -EOPNOTSUPP) 2625 ret = ethtool_get_phy_stats_ethtool(dev, &stats, &data); 2626 2627 if (ret) 2628 goto out; 2629 2630 if (copy_to_user(useraddr, &stats, sizeof(stats))) { 2631 ret = -EFAULT; 2632 goto out; 2633 } 2634 2635 useraddr += sizeof(stats); 2636 if (copy_to_user(useraddr, data, array_size(stats.n_stats, sizeof(u64)))) 2637 ret = -EFAULT; 2638 2639 out: 2640 vfree(data); 2641 return ret; 2642 } 2643 2644 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) 2645 { 2646 struct ethtool_perm_addr epaddr; 2647 2648 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) 2649 return -EFAULT; 2650 2651 if (epaddr.size < dev->addr_len) 2652 return -ETOOSMALL; 2653 epaddr.size = dev->addr_len; 2654 2655 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) 2656 return -EFAULT; 2657 useraddr += sizeof(epaddr); 2658 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) 2659 return -EFAULT; 2660 return 0; 2661 } 2662 2663 static int ethtool_get_value(struct net_device *dev, char __user *useraddr, 2664 u32 cmd, u32 (*actor)(struct net_device *)) 2665 { 2666 struct ethtool_value edata = { .cmd = cmd }; 2667 2668 if (!actor) 2669 return -EOPNOTSUPP; 2670 2671 edata.data = actor(dev); 2672 2673 if (copy_to_user(useraddr, &edata, sizeof(edata))) 2674 return -EFAULT; 2675 return 0; 2676 } 2677 2678 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, 2679 void (*actor)(struct net_device *, u32)) 2680 { 2681 struct ethtool_value edata; 2682 2683 if (!actor) 2684 return -EOPNOTSUPP; 2685 2686 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2687 return -EFAULT; 2688 2689 actor(dev, edata.data); 2690 return 0; 2691 } 2692 2693 static int ethtool_set_value(struct net_device *dev, char __user *useraddr, 2694 int (*actor)(struct net_device *, u32)) 2695 { 2696 struct ethtool_value edata; 2697 2698 if (!actor) 2699 return -EOPNOTSUPP; 2700 2701 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2702 return -EFAULT; 2703 2704 return actor(dev, edata.data); 2705 } 2706 2707 static int 2708 ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) 2709 { 2710 if (!dev->ethtool_ops->flash_device) { 2711 req->devlink = netdev_to_devlink_get(dev); 2712 return 0; 2713 } 2714 2715 return dev->ethtool_ops->flash_device(dev, &req->efl); 2716 } 2717 2718 static int ethtool_set_dump(struct net_device *dev, 2719 void __user *useraddr) 2720 { 2721 struct ethtool_dump dump; 2722 2723 if (!dev->ethtool_ops->set_dump) 2724 return -EOPNOTSUPP; 2725 2726 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2727 return -EFAULT; 2728 2729 return dev->ethtool_ops->set_dump(dev, &dump); 2730 } 2731 2732 static int ethtool_get_dump_flag(struct net_device *dev, 2733 void __user *useraddr) 2734 { 2735 int ret; 2736 struct ethtool_dump dump; 2737 const struct ethtool_ops *ops = dev->ethtool_ops; 2738 2739 if (!ops->get_dump_flag) 2740 return -EOPNOTSUPP; 2741 2742 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2743 return -EFAULT; 2744 2745 ret = ops->get_dump_flag(dev, &dump); 2746 if (ret) 2747 return ret; 2748 2749 if (copy_to_user(useraddr, &dump, sizeof(dump))) 2750 return -EFAULT; 2751 return 0; 2752 } 2753 2754 static int ethtool_get_dump_data(struct net_device *dev, 2755 void __user *useraddr) 2756 { 2757 int ret; 2758 __u32 len; 2759 struct ethtool_dump dump, tmp; 2760 const struct ethtool_ops *ops = dev->ethtool_ops; 2761 void *data = NULL; 2762 2763 if (!ops->get_dump_data || !ops->get_dump_flag) 2764 return -EOPNOTSUPP; 2765 2766 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2767 return -EFAULT; 2768 2769 memset(&tmp, 0, sizeof(tmp)); 2770 tmp.cmd = ETHTOOL_GET_DUMP_FLAG; 2771 ret = ops->get_dump_flag(dev, &tmp); 2772 if (ret) 2773 return ret; 2774 2775 len = min(tmp.len, dump.len); 2776 if (!len) 2777 return -EFAULT; 2778 2779 /* Don't ever let the driver think there's more space available 2780 * than it requested with .get_dump_flag(). 2781 */ 2782 dump.len = len; 2783 2784 /* Always allocate enough space to hold the whole thing so that the 2785 * driver does not need to check the length and bother with partial 2786 * dumping. 2787 */ 2788 data = vzalloc(tmp.len); 2789 if (!data) 2790 return -ENOMEM; 2791 ret = ops->get_dump_data(dev, &dump, data); 2792 if (ret) 2793 goto out; 2794 2795 /* There are two sane possibilities: 2796 * 1. The driver's .get_dump_data() does not touch dump.len. 2797 * 2. Or it may set dump.len to how much it really writes, which 2798 * should be tmp.len (or len if it can do a partial dump). 2799 * In any case respond to userspace with the actual length of data 2800 * it's receiving. 2801 */ 2802 WARN_ON(dump.len != len && dump.len != tmp.len); 2803 dump.len = len; 2804 2805 if (copy_to_user(useraddr, &dump, sizeof(dump))) { 2806 ret = -EFAULT; 2807 goto out; 2808 } 2809 useraddr += offsetof(struct ethtool_dump, data); 2810 if (copy_to_user(useraddr, data, len)) 2811 ret = -EFAULT; 2812 out: 2813 vfree(data); 2814 return ret; 2815 } 2816 2817 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) 2818 { 2819 struct kernel_ethtool_ts_info kernel_info; 2820 struct ethtool_ts_info info = {}; 2821 int err; 2822 2823 err = __ethtool_get_ts_info(dev, &kernel_info); 2824 if (err) 2825 return err; 2826 2827 info.cmd = kernel_info.cmd; 2828 info.so_timestamping = kernel_info.so_timestamping; 2829 info.phc_index = kernel_info.phc_index; 2830 info.tx_types = kernel_info.tx_types; 2831 info.rx_filters = kernel_info.rx_filters; 2832 2833 if (copy_to_user(useraddr, &info, sizeof(info))) 2834 return -EFAULT; 2835 2836 return 0; 2837 } 2838 2839 int ethtool_get_module_info_call(struct net_device *dev, 2840 struct ethtool_modinfo *modinfo) 2841 { 2842 const struct ethtool_ops *ops = dev->ethtool_ops; 2843 struct phy_device *phydev = dev->phydev; 2844 2845 if (dev->ethtool->module_fw_flash_in_progress) 2846 return -EBUSY; 2847 2848 if (dev->sfp_bus) 2849 return sfp_get_module_info(dev->sfp_bus, modinfo); 2850 2851 if (phydev && phydev->drv && phydev->drv->module_info) 2852 return phydev->drv->module_info(phydev, modinfo); 2853 2854 if (ops->get_module_info) 2855 return ops->get_module_info(dev, modinfo); 2856 2857 return -EOPNOTSUPP; 2858 } 2859 2860 static int ethtool_get_module_info(struct net_device *dev, 2861 void __user *useraddr) 2862 { 2863 int ret; 2864 struct ethtool_modinfo modinfo; 2865 2866 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) 2867 return -EFAULT; 2868 2869 ret = ethtool_get_module_info_call(dev, &modinfo); 2870 if (ret) 2871 return ret; 2872 2873 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) 2874 return -EFAULT; 2875 2876 return 0; 2877 } 2878 2879 int ethtool_get_module_eeprom_call(struct net_device *dev, 2880 struct ethtool_eeprom *ee, u8 *data) 2881 { 2882 const struct ethtool_ops *ops = dev->ethtool_ops; 2883 struct phy_device *phydev = dev->phydev; 2884 2885 if (dev->ethtool->module_fw_flash_in_progress) 2886 return -EBUSY; 2887 2888 if (dev->sfp_bus) 2889 return sfp_get_module_eeprom(dev->sfp_bus, ee, data); 2890 2891 if (phydev && phydev->drv && phydev->drv->module_eeprom) 2892 return phydev->drv->module_eeprom(phydev, ee, data); 2893 2894 if (ops->get_module_eeprom) 2895 return ops->get_module_eeprom(dev, ee, data); 2896 2897 return -EOPNOTSUPP; 2898 } 2899 2900 static int ethtool_get_module_eeprom(struct net_device *dev, 2901 void __user *useraddr) 2902 { 2903 int ret; 2904 struct ethtool_modinfo modinfo; 2905 2906 ret = ethtool_get_module_info_call(dev, &modinfo); 2907 if (ret) 2908 return ret; 2909 2910 return ethtool_get_any_eeprom(dev, useraddr, 2911 ethtool_get_module_eeprom_call, 2912 modinfo.eeprom_len); 2913 } 2914 2915 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) 2916 { 2917 switch (tuna->id) { 2918 case ETHTOOL_RX_COPYBREAK: 2919 case ETHTOOL_TX_COPYBREAK: 2920 case ETHTOOL_TX_COPYBREAK_BUF_SIZE: 2921 if (tuna->len != sizeof(u32) || 2922 tuna->type_id != ETHTOOL_TUNABLE_U32) 2923 return -EINVAL; 2924 break; 2925 case ETHTOOL_PFC_PREVENTION_TOUT: 2926 if (tuna->len != sizeof(u16) || 2927 tuna->type_id != ETHTOOL_TUNABLE_U16) 2928 return -EINVAL; 2929 break; 2930 default: 2931 return -EINVAL; 2932 } 2933 2934 return 0; 2935 } 2936 2937 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) 2938 { 2939 int ret; 2940 struct ethtool_tunable tuna; 2941 const struct ethtool_ops *ops = dev->ethtool_ops; 2942 void *data; 2943 2944 if (!ops->get_tunable) 2945 return -EOPNOTSUPP; 2946 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2947 return -EFAULT; 2948 ret = ethtool_tunable_valid(&tuna); 2949 if (ret) 2950 return ret; 2951 data = kzalloc(tuna.len, GFP_USER); 2952 if (!data) 2953 return -ENOMEM; 2954 ret = ops->get_tunable(dev, &tuna, data); 2955 if (ret) 2956 goto out; 2957 useraddr += sizeof(tuna); 2958 ret = -EFAULT; 2959 if (copy_to_user(useraddr, data, tuna.len)) 2960 goto out; 2961 ret = 0; 2962 2963 out: 2964 kfree(data); 2965 return ret; 2966 } 2967 2968 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) 2969 { 2970 int ret; 2971 struct ethtool_tunable tuna; 2972 const struct ethtool_ops *ops = dev->ethtool_ops; 2973 void *data; 2974 2975 if (!ops->set_tunable) 2976 return -EOPNOTSUPP; 2977 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2978 return -EFAULT; 2979 ret = ethtool_tunable_valid(&tuna); 2980 if (ret) 2981 return ret; 2982 useraddr += sizeof(tuna); 2983 data = memdup_user(useraddr, tuna.len); 2984 if (IS_ERR(data)) 2985 return PTR_ERR(data); 2986 ret = ops->set_tunable(dev, &tuna, data); 2987 2988 kfree(data); 2989 return ret; 2990 } 2991 2992 static noinline_for_stack int 2993 ethtool_get_per_queue_coalesce(struct net_device *dev, 2994 void __user *useraddr, 2995 struct ethtool_per_queue_op *per_queue_opt) 2996 { 2997 u32 bit; 2998 int ret; 2999 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 3000 3001 if (!dev->ethtool_ops->get_per_queue_coalesce) 3002 return -EOPNOTSUPP; 3003 3004 useraddr += sizeof(*per_queue_opt); 3005 3006 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, 3007 MAX_NUM_QUEUE); 3008 3009 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 3010 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 3011 3012 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); 3013 if (ret != 0) 3014 return ret; 3015 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 3016 return -EFAULT; 3017 useraddr += sizeof(coalesce); 3018 } 3019 3020 return 0; 3021 } 3022 3023 static noinline_for_stack int 3024 ethtool_set_per_queue_coalesce(struct net_device *dev, 3025 void __user *useraddr, 3026 struct ethtool_per_queue_op *per_queue_opt) 3027 { 3028 u32 bit; 3029 int i, ret = 0; 3030 int n_queue; 3031 struct ethtool_coalesce *backup = NULL, *tmp = NULL; 3032 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 3033 3034 if ((!dev->ethtool_ops->set_per_queue_coalesce) || 3035 (!dev->ethtool_ops->get_per_queue_coalesce)) 3036 return -EOPNOTSUPP; 3037 3038 useraddr += sizeof(*per_queue_opt); 3039 3040 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); 3041 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); 3042 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); 3043 if (!backup) 3044 return -ENOMEM; 3045 3046 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 3047 struct ethtool_coalesce coalesce; 3048 3049 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); 3050 if (ret != 0) 3051 goto roll_back; 3052 3053 tmp++; 3054 3055 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { 3056 ret = -EFAULT; 3057 goto roll_back; 3058 } 3059 3060 if (!ethtool_set_coalesce_supported(dev, &coalesce)) { 3061 ret = -EOPNOTSUPP; 3062 goto roll_back; 3063 } 3064 3065 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); 3066 if (ret != 0) 3067 goto roll_back; 3068 3069 useraddr += sizeof(coalesce); 3070 } 3071 3072 roll_back: 3073 if (ret != 0) { 3074 tmp = backup; 3075 for_each_set_bit(i, queue_mask, bit) { 3076 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); 3077 tmp++; 3078 } 3079 } 3080 kfree(backup); 3081 3082 return ret; 3083 } 3084 3085 static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, 3086 void __user *useraddr, u32 sub_cmd) 3087 { 3088 struct ethtool_per_queue_op per_queue_opt; 3089 3090 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) 3091 return -EFAULT; 3092 3093 if (per_queue_opt.sub_command != sub_cmd) 3094 return -EINVAL; 3095 3096 switch (per_queue_opt.sub_command) { 3097 case ETHTOOL_GCOALESCE: 3098 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); 3099 case ETHTOOL_SCOALESCE: 3100 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); 3101 default: 3102 return -EOPNOTSUPP; 3103 } 3104 } 3105 3106 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) 3107 { 3108 switch (tuna->id) { 3109 case ETHTOOL_PHY_DOWNSHIFT: 3110 case ETHTOOL_PHY_FAST_LINK_DOWN: 3111 if (tuna->len != sizeof(u8) || 3112 tuna->type_id != ETHTOOL_TUNABLE_U8) 3113 return -EINVAL; 3114 break; 3115 case ETHTOOL_PHY_EDPD: 3116 if (tuna->len != sizeof(u16) || 3117 tuna->type_id != ETHTOOL_TUNABLE_U16) 3118 return -EINVAL; 3119 break; 3120 default: 3121 return -EINVAL; 3122 } 3123 3124 return 0; 3125 } 3126 3127 static int get_phy_tunable(struct net_device *dev, void __user *useraddr) 3128 { 3129 struct phy_device *phydev = dev->phydev; 3130 struct ethtool_tunable tuna; 3131 bool phy_drv_tunable; 3132 void *data; 3133 int ret; 3134 3135 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 3136 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) 3137 return -EOPNOTSUPP; 3138 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 3139 return -EFAULT; 3140 ret = ethtool_phy_tunable_valid(&tuna); 3141 if (ret) 3142 return ret; 3143 data = kzalloc(tuna.len, GFP_USER); 3144 if (!data) 3145 return -ENOMEM; 3146 if (phy_drv_tunable) { 3147 mutex_lock(&phydev->lock); 3148 ret = phydev->drv->get_tunable(phydev, &tuna, data); 3149 mutex_unlock(&phydev->lock); 3150 } else { 3151 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); 3152 } 3153 if (ret) 3154 goto out; 3155 useraddr += sizeof(tuna); 3156 ret = -EFAULT; 3157 if (copy_to_user(useraddr, data, tuna.len)) 3158 goto out; 3159 ret = 0; 3160 3161 out: 3162 kfree(data); 3163 return ret; 3164 } 3165 3166 static int set_phy_tunable(struct net_device *dev, void __user *useraddr) 3167 { 3168 struct phy_device *phydev = dev->phydev; 3169 struct ethtool_tunable tuna; 3170 bool phy_drv_tunable; 3171 void *data; 3172 int ret; 3173 3174 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 3175 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) 3176 return -EOPNOTSUPP; 3177 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 3178 return -EFAULT; 3179 ret = ethtool_phy_tunable_valid(&tuna); 3180 if (ret) 3181 return ret; 3182 useraddr += sizeof(tuna); 3183 data = memdup_user(useraddr, tuna.len); 3184 if (IS_ERR(data)) 3185 return PTR_ERR(data); 3186 if (phy_drv_tunable) { 3187 mutex_lock(&phydev->lock); 3188 ret = phydev->drv->set_tunable(phydev, &tuna, data); 3189 mutex_unlock(&phydev->lock); 3190 } else { 3191 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); 3192 } 3193 3194 kfree(data); 3195 return ret; 3196 } 3197 3198 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) 3199 { 3200 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; 3201 int rc; 3202 3203 if (!dev->ethtool_ops->get_fecparam) 3204 return -EOPNOTSUPP; 3205 3206 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); 3207 if (rc) 3208 return rc; 3209 3210 if (WARN_ON_ONCE(fecparam.reserved)) 3211 fecparam.reserved = 0; 3212 3213 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) 3214 return -EFAULT; 3215 return 0; 3216 } 3217 3218 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) 3219 { 3220 struct ethtool_fecparam fecparam; 3221 3222 if (!dev->ethtool_ops->set_fecparam) 3223 return -EOPNOTSUPP; 3224 3225 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) 3226 return -EFAULT; 3227 3228 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) 3229 return -EINVAL; 3230 3231 fecparam.active_fec = 0; 3232 fecparam.reserved = 0; 3233 3234 return dev->ethtool_ops->set_fecparam(dev, &fecparam); 3235 } 3236 3237 /* The main entry point in this file. Called from net/core/dev_ioctl.c */ 3238 3239 static int 3240 __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, 3241 u32 ethcmd, struct ethtool_devlink_compat *devlink_state) 3242 { 3243 struct net_device *dev; 3244 u32 sub_cmd; 3245 int rc; 3246 netdev_features_t old_features; 3247 3248 dev = __dev_get_by_name(net, ifr->ifr_name); 3249 if (!dev) 3250 return -ENODEV; 3251 3252 if (ethcmd == ETHTOOL_PERQUEUE) { 3253 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) 3254 return -EFAULT; 3255 } else { 3256 sub_cmd = ethcmd; 3257 } 3258 /* Allow some commands to be done by anyone */ 3259 switch (sub_cmd) { 3260 case ETHTOOL_GSET: 3261 case ETHTOOL_GDRVINFO: 3262 case ETHTOOL_GMSGLVL: 3263 case ETHTOOL_GLINK: 3264 case ETHTOOL_GCOALESCE: 3265 case ETHTOOL_GRINGPARAM: 3266 case ETHTOOL_GPAUSEPARAM: 3267 case ETHTOOL_GRXCSUM: 3268 case ETHTOOL_GTXCSUM: 3269 case ETHTOOL_GSG: 3270 case ETHTOOL_GSSET_INFO: 3271 case ETHTOOL_GSTRINGS: 3272 case ETHTOOL_GSTATS: 3273 case ETHTOOL_GPHYSTATS: 3274 case ETHTOOL_GTSO: 3275 case ETHTOOL_GPERMADDR: 3276 case ETHTOOL_GUFO: 3277 case ETHTOOL_GGSO: 3278 case ETHTOOL_GGRO: 3279 case ETHTOOL_GFLAGS: 3280 case ETHTOOL_GPFLAGS: 3281 case ETHTOOL_GRXFH: 3282 case ETHTOOL_GRXRINGS: 3283 case ETHTOOL_GRXCLSRLCNT: 3284 case ETHTOOL_GRXCLSRULE: 3285 case ETHTOOL_GRXCLSRLALL: 3286 case ETHTOOL_GRXFHINDIR: 3287 case ETHTOOL_GRSSH: 3288 case ETHTOOL_GFEATURES: 3289 case ETHTOOL_GCHANNELS: 3290 case ETHTOOL_GET_TS_INFO: 3291 case ETHTOOL_GEEE: 3292 case ETHTOOL_GTUNABLE: 3293 case ETHTOOL_PHY_GTUNABLE: 3294 case ETHTOOL_GLINKSETTINGS: 3295 case ETHTOOL_GFECPARAM: 3296 break; 3297 default: 3298 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 3299 return -EPERM; 3300 } 3301 3302 netdev_lock_ops(dev); 3303 if (dev->dev.parent) 3304 pm_runtime_get_sync(dev->dev.parent); 3305 3306 if (!netif_device_present(dev)) { 3307 rc = -ENODEV; 3308 goto out; 3309 } 3310 3311 if (dev->ethtool_ops->begin) { 3312 rc = dev->ethtool_ops->begin(dev); 3313 if (rc < 0) 3314 goto out; 3315 } 3316 old_features = dev->features; 3317 3318 switch (ethcmd) { 3319 case ETHTOOL_GSET: 3320 rc = ethtool_get_settings(dev, useraddr); 3321 break; 3322 case ETHTOOL_SSET: 3323 rc = ethtool_set_settings(dev, useraddr); 3324 break; 3325 case ETHTOOL_GDRVINFO: 3326 rc = ethtool_get_drvinfo(dev, devlink_state); 3327 break; 3328 case ETHTOOL_GREGS: 3329 rc = ethtool_get_regs(dev, useraddr); 3330 break; 3331 case ETHTOOL_GWOL: 3332 rc = ethtool_get_wol(dev, useraddr); 3333 break; 3334 case ETHTOOL_SWOL: 3335 rc = ethtool_set_wol(dev, useraddr); 3336 break; 3337 case ETHTOOL_GMSGLVL: 3338 rc = ethtool_get_value(dev, useraddr, ethcmd, 3339 dev->ethtool_ops->get_msglevel); 3340 break; 3341 case ETHTOOL_SMSGLVL: 3342 rc = ethtool_set_value_void(dev, useraddr, 3343 dev->ethtool_ops->set_msglevel); 3344 if (!rc) 3345 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF); 3346 break; 3347 case ETHTOOL_GEEE: 3348 rc = ethtool_get_eee(dev, useraddr); 3349 break; 3350 case ETHTOOL_SEEE: 3351 rc = ethtool_set_eee(dev, useraddr); 3352 break; 3353 case ETHTOOL_NWAY_RST: 3354 rc = ethtool_nway_reset(dev); 3355 break; 3356 case ETHTOOL_GLINK: 3357 rc = ethtool_get_link(dev, useraddr); 3358 break; 3359 case ETHTOOL_GEEPROM: 3360 rc = ethtool_get_eeprom(dev, useraddr); 3361 break; 3362 case ETHTOOL_SEEPROM: 3363 rc = ethtool_set_eeprom(dev, useraddr); 3364 break; 3365 case ETHTOOL_GCOALESCE: 3366 rc = ethtool_get_coalesce(dev, useraddr); 3367 break; 3368 case ETHTOOL_SCOALESCE: 3369 rc = ethtool_set_coalesce(dev, useraddr); 3370 break; 3371 case ETHTOOL_GRINGPARAM: 3372 rc = ethtool_get_ringparam(dev, useraddr); 3373 break; 3374 case ETHTOOL_SRINGPARAM: 3375 rc = ethtool_set_ringparam(dev, useraddr); 3376 break; 3377 case ETHTOOL_GPAUSEPARAM: 3378 rc = ethtool_get_pauseparam(dev, useraddr); 3379 break; 3380 case ETHTOOL_SPAUSEPARAM: 3381 rc = ethtool_set_pauseparam(dev, useraddr); 3382 break; 3383 case ETHTOOL_TEST: 3384 rc = ethtool_self_test(dev, useraddr); 3385 break; 3386 case ETHTOOL_GSTRINGS: 3387 rc = ethtool_get_strings(dev, useraddr); 3388 break; 3389 case ETHTOOL_PHYS_ID: 3390 rc = ethtool_phys_id(dev, useraddr); 3391 break; 3392 case ETHTOOL_GSTATS: 3393 rc = ethtool_get_stats(dev, useraddr); 3394 break; 3395 case ETHTOOL_GPERMADDR: 3396 rc = ethtool_get_perm_addr(dev, useraddr); 3397 break; 3398 case ETHTOOL_GFLAGS: 3399 rc = ethtool_get_value(dev, useraddr, ethcmd, 3400 __ethtool_get_flags); 3401 break; 3402 case ETHTOOL_SFLAGS: 3403 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); 3404 break; 3405 case ETHTOOL_GPFLAGS: 3406 rc = ethtool_get_value(dev, useraddr, ethcmd, 3407 dev->ethtool_ops->get_priv_flags); 3408 if (!rc) 3409 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF); 3410 break; 3411 case ETHTOOL_SPFLAGS: 3412 rc = ethtool_set_value(dev, useraddr, 3413 dev->ethtool_ops->set_priv_flags); 3414 break; 3415 case ETHTOOL_GRXFH: 3416 rc = ethtool_get_rxfh_fields(dev, ethcmd, useraddr); 3417 break; 3418 case ETHTOOL_SRXFH: 3419 rc = ethtool_set_rxfh_fields(dev, ethcmd, useraddr); 3420 break; 3421 case ETHTOOL_GRXRINGS: 3422 case ETHTOOL_GRXCLSRLCNT: 3423 case ETHTOOL_GRXCLSRULE: 3424 case ETHTOOL_GRXCLSRLALL: 3425 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); 3426 break; 3427 case ETHTOOL_SRXCLSRLDEL: 3428 case ETHTOOL_SRXCLSRLINS: 3429 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); 3430 break; 3431 case ETHTOOL_FLASHDEV: 3432 rc = ethtool_flash_device(dev, devlink_state); 3433 break; 3434 case ETHTOOL_RESET: 3435 rc = ethtool_reset(dev, useraddr); 3436 break; 3437 case ETHTOOL_GSSET_INFO: 3438 rc = ethtool_get_sset_info(dev, useraddr); 3439 break; 3440 case ETHTOOL_GRXFHINDIR: 3441 rc = ethtool_get_rxfh_indir(dev, useraddr); 3442 break; 3443 case ETHTOOL_SRXFHINDIR: 3444 rc = ethtool_set_rxfh_indir(dev, useraddr); 3445 break; 3446 case ETHTOOL_GRSSH: 3447 rc = ethtool_get_rxfh(dev, useraddr); 3448 break; 3449 case ETHTOOL_SRSSH: 3450 rc = ethtool_set_rxfh(dev, useraddr); 3451 break; 3452 case ETHTOOL_GFEATURES: 3453 rc = ethtool_get_features(dev, useraddr); 3454 break; 3455 case ETHTOOL_SFEATURES: 3456 rc = ethtool_set_features(dev, useraddr); 3457 break; 3458 case ETHTOOL_GTXCSUM: 3459 case ETHTOOL_GRXCSUM: 3460 case ETHTOOL_GSG: 3461 case ETHTOOL_GTSO: 3462 case ETHTOOL_GGSO: 3463 case ETHTOOL_GGRO: 3464 rc = ethtool_get_one_feature(dev, useraddr, ethcmd); 3465 break; 3466 case ETHTOOL_STXCSUM: 3467 case ETHTOOL_SRXCSUM: 3468 case ETHTOOL_SSG: 3469 case ETHTOOL_STSO: 3470 case ETHTOOL_SGSO: 3471 case ETHTOOL_SGRO: 3472 rc = ethtool_set_one_feature(dev, useraddr, ethcmd); 3473 break; 3474 case ETHTOOL_GCHANNELS: 3475 rc = ethtool_get_channels(dev, useraddr); 3476 break; 3477 case ETHTOOL_SCHANNELS: 3478 rc = ethtool_set_channels(dev, useraddr); 3479 break; 3480 case ETHTOOL_SET_DUMP: 3481 rc = ethtool_set_dump(dev, useraddr); 3482 break; 3483 case ETHTOOL_GET_DUMP_FLAG: 3484 rc = ethtool_get_dump_flag(dev, useraddr); 3485 break; 3486 case ETHTOOL_GET_DUMP_DATA: 3487 rc = ethtool_get_dump_data(dev, useraddr); 3488 break; 3489 case ETHTOOL_GET_TS_INFO: 3490 rc = ethtool_get_ts_info(dev, useraddr); 3491 break; 3492 case ETHTOOL_GMODULEINFO: 3493 rc = ethtool_get_module_info(dev, useraddr); 3494 break; 3495 case ETHTOOL_GMODULEEEPROM: 3496 rc = ethtool_get_module_eeprom(dev, useraddr); 3497 break; 3498 case ETHTOOL_GTUNABLE: 3499 rc = ethtool_get_tunable(dev, useraddr); 3500 break; 3501 case ETHTOOL_STUNABLE: 3502 rc = ethtool_set_tunable(dev, useraddr); 3503 break; 3504 case ETHTOOL_GPHYSTATS: 3505 rc = ethtool_get_phy_stats(dev, useraddr); 3506 break; 3507 case ETHTOOL_PERQUEUE: 3508 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); 3509 break; 3510 case ETHTOOL_GLINKSETTINGS: 3511 rc = ethtool_get_link_ksettings(dev, useraddr); 3512 break; 3513 case ETHTOOL_SLINKSETTINGS: 3514 rc = ethtool_set_link_ksettings(dev, useraddr); 3515 break; 3516 case ETHTOOL_PHY_GTUNABLE: 3517 rc = get_phy_tunable(dev, useraddr); 3518 break; 3519 case ETHTOOL_PHY_STUNABLE: 3520 rc = set_phy_tunable(dev, useraddr); 3521 break; 3522 case ETHTOOL_GFECPARAM: 3523 rc = ethtool_get_fecparam(dev, useraddr); 3524 break; 3525 case ETHTOOL_SFECPARAM: 3526 rc = ethtool_set_fecparam(dev, useraddr); 3527 break; 3528 default: 3529 rc = -EOPNOTSUPP; 3530 } 3531 3532 if (dev->ethtool_ops->complete) 3533 dev->ethtool_ops->complete(dev); 3534 3535 if (old_features != dev->features) 3536 netdev_features_change(dev); 3537 out: 3538 if (dev->dev.parent) 3539 pm_runtime_put(dev->dev.parent); 3540 netdev_unlock_ops(dev); 3541 3542 return rc; 3543 } 3544 3545 int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) 3546 { 3547 struct ethtool_devlink_compat *state; 3548 u32 ethcmd; 3549 int rc; 3550 3551 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) 3552 return -EFAULT; 3553 3554 state = kzalloc(sizeof(*state), GFP_KERNEL); 3555 if (!state) 3556 return -ENOMEM; 3557 3558 switch (ethcmd) { 3559 case ETHTOOL_FLASHDEV: 3560 if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { 3561 rc = -EFAULT; 3562 goto exit_free; 3563 } 3564 state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; 3565 break; 3566 } 3567 3568 rtnl_lock(); 3569 rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); 3570 rtnl_unlock(); 3571 if (rc) 3572 goto exit_free; 3573 3574 switch (ethcmd) { 3575 case ETHTOOL_FLASHDEV: 3576 if (state->devlink) 3577 rc = devlink_compat_flash_update(state->devlink, 3578 state->efl.data); 3579 break; 3580 case ETHTOOL_GDRVINFO: 3581 if (state->devlink) 3582 devlink_compat_running_version(state->devlink, 3583 state->info.fw_version, 3584 sizeof(state->info.fw_version)); 3585 if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { 3586 rc = -EFAULT; 3587 goto exit_free; 3588 } 3589 break; 3590 } 3591 3592 exit_free: 3593 if (state->devlink) 3594 devlink_put(state->devlink); 3595 kfree(state); 3596 return rc; 3597 } 3598 3599 struct ethtool_rx_flow_key { 3600 struct flow_dissector_key_basic basic; 3601 union { 3602 struct flow_dissector_key_ipv4_addrs ipv4; 3603 struct flow_dissector_key_ipv6_addrs ipv6; 3604 }; 3605 struct flow_dissector_key_ports tp; 3606 struct flow_dissector_key_ip ip; 3607 struct flow_dissector_key_vlan vlan; 3608 struct flow_dissector_key_eth_addrs eth_addrs; 3609 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ 3610 3611 struct ethtool_rx_flow_match { 3612 struct flow_dissector dissector; 3613 struct ethtool_rx_flow_key key; 3614 struct ethtool_rx_flow_key mask; 3615 }; 3616 3617 struct ethtool_rx_flow_rule * 3618 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) 3619 { 3620 const struct ethtool_rx_flow_spec *fs = input->fs; 3621 struct ethtool_rx_flow_match *match; 3622 struct ethtool_rx_flow_rule *flow; 3623 struct flow_action_entry *act; 3624 3625 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + 3626 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); 3627 if (!flow) 3628 return ERR_PTR(-ENOMEM); 3629 3630 /* ethtool_rx supports only one single action per rule. */ 3631 flow->rule = flow_rule_alloc(1); 3632 if (!flow->rule) { 3633 kfree(flow); 3634 return ERR_PTR(-ENOMEM); 3635 } 3636 3637 match = (struct ethtool_rx_flow_match *)flow->priv; 3638 flow->rule->match.dissector = &match->dissector; 3639 flow->rule->match.mask = &match->mask; 3640 flow->rule->match.key = &match->key; 3641 3642 match->mask.basic.n_proto = htons(0xffff); 3643 3644 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3645 case ETHER_FLOW: { 3646 const struct ethhdr *ether_spec, *ether_m_spec; 3647 3648 ether_spec = &fs->h_u.ether_spec; 3649 ether_m_spec = &fs->m_u.ether_spec; 3650 3651 if (!is_zero_ether_addr(ether_m_spec->h_source)) { 3652 ether_addr_copy(match->key.eth_addrs.src, 3653 ether_spec->h_source); 3654 ether_addr_copy(match->mask.eth_addrs.src, 3655 ether_m_spec->h_source); 3656 } 3657 if (!is_zero_ether_addr(ether_m_spec->h_dest)) { 3658 ether_addr_copy(match->key.eth_addrs.dst, 3659 ether_spec->h_dest); 3660 ether_addr_copy(match->mask.eth_addrs.dst, 3661 ether_m_spec->h_dest); 3662 } 3663 if (ether_m_spec->h_proto) { 3664 match->key.basic.n_proto = ether_spec->h_proto; 3665 match->mask.basic.n_proto = ether_m_spec->h_proto; 3666 } 3667 } 3668 break; 3669 case TCP_V4_FLOW: 3670 case UDP_V4_FLOW: { 3671 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; 3672 3673 match->key.basic.n_proto = htons(ETH_P_IP); 3674 3675 v4_spec = &fs->h_u.tcp_ip4_spec; 3676 v4_m_spec = &fs->m_u.tcp_ip4_spec; 3677 3678 if (v4_m_spec->ip4src) { 3679 match->key.ipv4.src = v4_spec->ip4src; 3680 match->mask.ipv4.src = v4_m_spec->ip4src; 3681 } 3682 if (v4_m_spec->ip4dst) { 3683 match->key.ipv4.dst = v4_spec->ip4dst; 3684 match->mask.ipv4.dst = v4_m_spec->ip4dst; 3685 } 3686 if (v4_m_spec->ip4src || 3687 v4_m_spec->ip4dst) { 3688 match->dissector.used_keys |= 3689 BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS); 3690 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = 3691 offsetof(struct ethtool_rx_flow_key, ipv4); 3692 } 3693 if (v4_m_spec->psrc) { 3694 match->key.tp.src = v4_spec->psrc; 3695 match->mask.tp.src = v4_m_spec->psrc; 3696 } 3697 if (v4_m_spec->pdst) { 3698 match->key.tp.dst = v4_spec->pdst; 3699 match->mask.tp.dst = v4_m_spec->pdst; 3700 } 3701 if (v4_m_spec->psrc || 3702 v4_m_spec->pdst) { 3703 match->dissector.used_keys |= 3704 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3705 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3706 offsetof(struct ethtool_rx_flow_key, tp); 3707 } 3708 if (v4_m_spec->tos) { 3709 match->key.ip.tos = v4_spec->tos; 3710 match->mask.ip.tos = v4_m_spec->tos; 3711 match->dissector.used_keys |= 3712 BIT(FLOW_DISSECTOR_KEY_IP); 3713 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3714 offsetof(struct ethtool_rx_flow_key, ip); 3715 } 3716 } 3717 break; 3718 case TCP_V6_FLOW: 3719 case UDP_V6_FLOW: { 3720 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; 3721 3722 match->key.basic.n_proto = htons(ETH_P_IPV6); 3723 3724 v6_spec = &fs->h_u.tcp_ip6_spec; 3725 v6_m_spec = &fs->m_u.tcp_ip6_spec; 3726 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) { 3727 memcpy(&match->key.ipv6.src, v6_spec->ip6src, 3728 sizeof(match->key.ipv6.src)); 3729 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, 3730 sizeof(match->mask.ipv6.src)); 3731 } 3732 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3733 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, 3734 sizeof(match->key.ipv6.dst)); 3735 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, 3736 sizeof(match->mask.ipv6.dst)); 3737 } 3738 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) || 3739 !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3740 match->dissector.used_keys |= 3741 BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS); 3742 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = 3743 offsetof(struct ethtool_rx_flow_key, ipv6); 3744 } 3745 if (v6_m_spec->psrc) { 3746 match->key.tp.src = v6_spec->psrc; 3747 match->mask.tp.src = v6_m_spec->psrc; 3748 } 3749 if (v6_m_spec->pdst) { 3750 match->key.tp.dst = v6_spec->pdst; 3751 match->mask.tp.dst = v6_m_spec->pdst; 3752 } 3753 if (v6_m_spec->psrc || 3754 v6_m_spec->pdst) { 3755 match->dissector.used_keys |= 3756 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3757 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3758 offsetof(struct ethtool_rx_flow_key, tp); 3759 } 3760 if (v6_m_spec->tclass) { 3761 match->key.ip.tos = v6_spec->tclass; 3762 match->mask.ip.tos = v6_m_spec->tclass; 3763 match->dissector.used_keys |= 3764 BIT_ULL(FLOW_DISSECTOR_KEY_IP); 3765 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3766 offsetof(struct ethtool_rx_flow_key, ip); 3767 } 3768 } 3769 break; 3770 default: 3771 ethtool_rx_flow_rule_destroy(flow); 3772 return ERR_PTR(-EINVAL); 3773 } 3774 3775 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3776 case TCP_V4_FLOW: 3777 case TCP_V6_FLOW: 3778 match->key.basic.ip_proto = IPPROTO_TCP; 3779 match->mask.basic.ip_proto = 0xff; 3780 break; 3781 case UDP_V4_FLOW: 3782 case UDP_V6_FLOW: 3783 match->key.basic.ip_proto = IPPROTO_UDP; 3784 match->mask.basic.ip_proto = 0xff; 3785 break; 3786 } 3787 3788 match->dissector.used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_BASIC); 3789 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = 3790 offsetof(struct ethtool_rx_flow_key, basic); 3791 3792 if (fs->flow_type & FLOW_EXT) { 3793 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3794 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3795 3796 if (ext_m_spec->vlan_etype) { 3797 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; 3798 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; 3799 } 3800 3801 if (ext_m_spec->vlan_tci) { 3802 match->key.vlan.vlan_id = 3803 ntohs(ext_h_spec->vlan_tci) & 0x0fff; 3804 match->mask.vlan.vlan_id = 3805 ntohs(ext_m_spec->vlan_tci) & 0x0fff; 3806 3807 match->key.vlan.vlan_dei = 3808 !!(ext_h_spec->vlan_tci & htons(0x1000)); 3809 match->mask.vlan.vlan_dei = 3810 !!(ext_m_spec->vlan_tci & htons(0x1000)); 3811 3812 match->key.vlan.vlan_priority = 3813 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; 3814 match->mask.vlan.vlan_priority = 3815 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; 3816 } 3817 3818 if (ext_m_spec->vlan_etype || 3819 ext_m_spec->vlan_tci) { 3820 match->dissector.used_keys |= 3821 BIT_ULL(FLOW_DISSECTOR_KEY_VLAN); 3822 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = 3823 offsetof(struct ethtool_rx_flow_key, vlan); 3824 } 3825 } 3826 if (fs->flow_type & FLOW_MAC_EXT) { 3827 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3828 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3829 3830 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, 3831 ETH_ALEN); 3832 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, 3833 ETH_ALEN); 3834 3835 match->dissector.used_keys |= 3836 BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS); 3837 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = 3838 offsetof(struct ethtool_rx_flow_key, eth_addrs); 3839 } 3840 3841 act = &flow->rule->action.entries[0]; 3842 switch (fs->ring_cookie) { 3843 case RX_CLS_FLOW_DISC: 3844 act->id = FLOW_ACTION_DROP; 3845 break; 3846 case RX_CLS_FLOW_WAKE: 3847 act->id = FLOW_ACTION_WAKE; 3848 break; 3849 default: 3850 act->id = FLOW_ACTION_QUEUE; 3851 if (fs->flow_type & FLOW_RSS) 3852 act->queue.ctx = input->rss_ctx; 3853 3854 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); 3855 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); 3856 break; 3857 } 3858 3859 return flow; 3860 } 3861 EXPORT_SYMBOL(ethtool_rx_flow_rule_create); 3862 3863 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) 3864 { 3865 kfree(flow->rule); 3866 kfree(flow); 3867 } 3868 EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); 3869