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