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