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