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