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