1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * net/core/ethtool.c - Ethtool ioctl handler 4 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx> 5 * 6 * This file is where we call all the ethtool_ops commands to get 7 * the information ethtool needs. 8 */ 9 10#include <linux/compat.h> 11#include <linux/etherdevice.h> 12#include <linux/module.h> 13#include <linux/types.h> 14#include <linux/capability.h> 15#include <linux/errno.h> 16#include <linux/ethtool.h> 17#include <linux/netdevice.h> 18#include <linux/net_tstamp.h> 19#include <linux/phy.h> 20#include <linux/bitops.h> 21#include <linux/uaccess.h> 22#include <linux/vmalloc.h> 23#include <linux/sfp.h> 24#include <linux/slab.h> 25#include <linux/rtnetlink.h> 26#include <linux/sched/signal.h> 27#include <linux/net.h> 28#include <linux/pm_runtime.h> 29#include <net/devlink.h> 30#include <net/ipv6.h> 31#include <net/xdp_sock_drv.h> 32#include <net/flow_offload.h> 33#include <linux/ethtool_netlink.h> 34#include <generated/utsrelease.h> 35#include "common.h" 36 37/* State held across locks and calls for commands which have devlink fallback */ 38struct ethtool_devlink_compat { 39 struct devlink *devlink; 40 union { 41 struct ethtool_flash efl; 42 struct ethtool_drvinfo info; 43 }; 44}; 45 46static struct devlink *netdev_to_devlink_get(struct net_device *dev) 47{ 48 if (!dev->devlink_port) 49 return NULL; 50 return devlink_try_get(dev->devlink_port->devlink); 51} 52 53/* 54 * Some useful ethtool_ops methods that're device independent. 55 * If we find that all drivers want to do the same thing here, 56 * we can turn these into dev_() function calls. 57 */ 58 59u32 ethtool_op_get_link(struct net_device *dev) 60{ 61 return netif_carrier_ok(dev) ? 1 : 0; 62} 63EXPORT_SYMBOL(ethtool_op_get_link); 64 65int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info) 66{ 67 info->so_timestamping = 68 SOF_TIMESTAMPING_TX_SOFTWARE | 69 SOF_TIMESTAMPING_RX_SOFTWARE | 70 SOF_TIMESTAMPING_SOFTWARE; 71 info->phc_index = -1; 72 return 0; 73} 74EXPORT_SYMBOL(ethtool_op_get_ts_info); 75 76/* Handlers for each ethtool command */ 77 78static int ethtool_get_features(struct net_device *dev, void __user *useraddr) 79{ 80 struct ethtool_gfeatures cmd = { 81 .cmd = ETHTOOL_GFEATURES, 82 .size = ETHTOOL_DEV_FEATURE_WORDS, 83 }; 84 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 85 u32 __user *sizeaddr; 86 u32 copy_size; 87 int i; 88 89 /* in case feature bits run out again */ 90 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); 91 92 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 93 features[i].available = (u32)(dev->hw_features >> (32 * i)); 94 features[i].requested = (u32)(dev->wanted_features >> (32 * i)); 95 features[i].active = (u32)(dev->features >> (32 * i)); 96 features[i].never_changed = 97 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); 98 } 99 100 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); 101 if (get_user(copy_size, sizeaddr)) 102 return -EFAULT; 103 104 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) 105 copy_size = ETHTOOL_DEV_FEATURE_WORDS; 106 107 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 108 return -EFAULT; 109 useraddr += sizeof(cmd); 110 if (copy_to_user(useraddr, features, 111 array_size(copy_size, sizeof(*features)))) 112 return -EFAULT; 113 114 return 0; 115} 116 117static int ethtool_set_features(struct net_device *dev, void __user *useraddr) 118{ 119 struct ethtool_sfeatures cmd; 120 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 121 netdev_features_t wanted = 0, valid = 0; 122 int i, ret = 0; 123 124 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 125 return -EFAULT; 126 useraddr += sizeof(cmd); 127 128 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) 129 return -EINVAL; 130 131 if (copy_from_user(features, useraddr, sizeof(features))) 132 return -EFAULT; 133 134 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 135 valid |= (netdev_features_t)features[i].valid << (32 * i); 136 wanted |= (netdev_features_t)features[i].requested << (32 * i); 137 } 138 139 if (valid & ~NETIF_F_ETHTOOL_BITS) 140 return -EINVAL; 141 142 if (valid & ~dev->hw_features) { 143 valid &= dev->hw_features; 144 ret |= ETHTOOL_F_UNSUPPORTED; 145 } 146 147 dev->wanted_features &= ~valid; 148 dev->wanted_features |= wanted & valid; 149 __netdev_update_features(dev); 150 151 if ((dev->wanted_features ^ dev->features) & valid) 152 ret |= ETHTOOL_F_WISH; 153 154 return ret; 155} 156 157static int __ethtool_get_sset_count(struct net_device *dev, int sset) 158{ 159 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 160 const struct ethtool_ops *ops = dev->ethtool_ops; 161 162 if (sset == ETH_SS_FEATURES) 163 return ARRAY_SIZE(netdev_features_strings); 164 165 if (sset == ETH_SS_RSS_HASH_FUNCS) 166 return ARRAY_SIZE(rss_hash_func_strings); 167 168 if (sset == ETH_SS_TUNABLES) 169 return ARRAY_SIZE(tunable_strings); 170 171 if (sset == ETH_SS_PHY_TUNABLES) 172 return ARRAY_SIZE(phy_tunable_strings); 173 174 if (sset == ETH_SS_PHY_STATS && dev->phydev && 175 !ops->get_ethtool_phy_stats && 176 phy_ops && phy_ops->get_sset_count) 177 return phy_ops->get_sset_count(dev->phydev); 178 179 if (sset == ETH_SS_LINK_MODES) 180 return __ETHTOOL_LINK_MODE_MASK_NBITS; 181 182 if (ops->get_sset_count && ops->get_strings) 183 return ops->get_sset_count(dev, sset); 184 else 185 return -EOPNOTSUPP; 186} 187 188static void __ethtool_get_strings(struct net_device *dev, 189 u32 stringset, u8 *data) 190{ 191 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 192 const struct ethtool_ops *ops = dev->ethtool_ops; 193 194 if (stringset == ETH_SS_FEATURES) 195 memcpy(data, netdev_features_strings, 196 sizeof(netdev_features_strings)); 197 else if (stringset == ETH_SS_RSS_HASH_FUNCS) 198 memcpy(data, rss_hash_func_strings, 199 sizeof(rss_hash_func_strings)); 200 else if (stringset == ETH_SS_TUNABLES) 201 memcpy(data, tunable_strings, sizeof(tunable_strings)); 202 else if (stringset == ETH_SS_PHY_TUNABLES) 203 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); 204 else if (stringset == ETH_SS_PHY_STATS && dev->phydev && 205 !ops->get_ethtool_phy_stats && phy_ops && 206 phy_ops->get_strings) 207 phy_ops->get_strings(dev->phydev, data); 208 else if (stringset == ETH_SS_LINK_MODES) 209 memcpy(data, link_mode_names, 210 __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN); 211 else 212 /* ops->get_strings is valid because checked earlier */ 213 ops->get_strings(dev, stringset, data); 214} 215 216static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) 217{ 218 /* feature masks of legacy discrete ethtool ops */ 219 220 switch (eth_cmd) { 221 case ETHTOOL_GTXCSUM: 222 case ETHTOOL_STXCSUM: 223 return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC | 224 NETIF_F_SCTP_CRC; 225 case ETHTOOL_GRXCSUM: 226 case ETHTOOL_SRXCSUM: 227 return NETIF_F_RXCSUM; 228 case ETHTOOL_GSG: 229 case ETHTOOL_SSG: 230 return NETIF_F_SG | NETIF_F_FRAGLIST; 231 case ETHTOOL_GTSO: 232 case ETHTOOL_STSO: 233 return NETIF_F_ALL_TSO; 234 case ETHTOOL_GGSO: 235 case ETHTOOL_SGSO: 236 return NETIF_F_GSO; 237 case ETHTOOL_GGRO: 238 case ETHTOOL_SGRO: 239 return NETIF_F_GRO; 240 default: 241 BUG(); 242 } 243} 244 245static int ethtool_get_one_feature(struct net_device *dev, 246 char __user *useraddr, u32 ethcmd) 247{ 248 netdev_features_t mask = ethtool_get_feature_mask(ethcmd); 249 struct ethtool_value edata = { 250 .cmd = ethcmd, 251 .data = !!(dev->features & mask), 252 }; 253 254 if (copy_to_user(useraddr, &edata, sizeof(edata))) 255 return -EFAULT; 256 return 0; 257} 258 259static int ethtool_set_one_feature(struct net_device *dev, 260 void __user *useraddr, u32 ethcmd) 261{ 262 struct ethtool_value edata; 263 netdev_features_t mask; 264 265 if (copy_from_user(&edata, useraddr, sizeof(edata))) 266 return -EFAULT; 267 268 mask = ethtool_get_feature_mask(ethcmd); 269 mask &= dev->hw_features; 270 if (!mask) 271 return -EOPNOTSUPP; 272 273 if (edata.data) 274 dev->wanted_features |= mask; 275 else 276 dev->wanted_features &= ~mask; 277 278 __netdev_update_features(dev); 279 280 return 0; 281} 282 283#define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ 284 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) 285#define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ 286 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ 287 NETIF_F_RXHASH) 288 289static u32 __ethtool_get_flags(struct net_device *dev) 290{ 291 u32 flags = 0; 292 293 if (dev->features & NETIF_F_LRO) 294 flags |= ETH_FLAG_LRO; 295 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 296 flags |= ETH_FLAG_RXVLAN; 297 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) 298 flags |= ETH_FLAG_TXVLAN; 299 if (dev->features & NETIF_F_NTUPLE) 300 flags |= ETH_FLAG_NTUPLE; 301 if (dev->features & NETIF_F_RXHASH) 302 flags |= ETH_FLAG_RXHASH; 303 304 return flags; 305} 306 307static int __ethtool_set_flags(struct net_device *dev, u32 data) 308{ 309 netdev_features_t features = 0, changed; 310 311 if (data & ~ETH_ALL_FLAGS) 312 return -EINVAL; 313 314 if (data & ETH_FLAG_LRO) 315 features |= NETIF_F_LRO; 316 if (data & ETH_FLAG_RXVLAN) 317 features |= NETIF_F_HW_VLAN_CTAG_RX; 318 if (data & ETH_FLAG_TXVLAN) 319 features |= NETIF_F_HW_VLAN_CTAG_TX; 320 if (data & ETH_FLAG_NTUPLE) 321 features |= NETIF_F_NTUPLE; 322 if (data & ETH_FLAG_RXHASH) 323 features |= NETIF_F_RXHASH; 324 325 /* allow changing only bits set in hw_features */ 326 changed = (features ^ dev->features) & ETH_ALL_FEATURES; 327 if (changed & ~dev->hw_features) 328 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; 329 330 dev->wanted_features = 331 (dev->wanted_features & ~changed) | (features & changed); 332 333 __netdev_update_features(dev); 334 335 return 0; 336} 337 338/* Given two link masks, AND them together and save the result in dst. */ 339void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, 340 struct ethtool_link_ksettings *src) 341{ 342 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); 343 unsigned int idx = 0; 344 345 for (; idx < size; idx++) { 346 dst->link_modes.supported[idx] &= 347 src->link_modes.supported[idx]; 348 dst->link_modes.advertising[idx] &= 349 src->link_modes.advertising[idx]; 350 } 351} 352EXPORT_SYMBOL(ethtool_intersect_link_masks); 353 354void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, 355 u32 legacy_u32) 356{ 357 linkmode_zero(dst); 358 dst[0] = legacy_u32; 359} 360EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); 361 362/* return false if src had higher bits set. lower bits always updated. */ 363bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, 364 const unsigned long *src) 365{ 366 *legacy_u32 = src[0]; 367 return find_next_bit(src, __ETHTOOL_LINK_MODE_MASK_NBITS, 32) == 368 __ETHTOOL_LINK_MODE_MASK_NBITS; 369} 370EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); 371 372/* return false if ksettings link modes had higher bits 373 * set. legacy_settings always updated (best effort) 374 */ 375static bool 376convert_link_ksettings_to_legacy_settings( 377 struct ethtool_cmd *legacy_settings, 378 const struct ethtool_link_ksettings *link_ksettings) 379{ 380 bool retval = true; 381 382 memset(legacy_settings, 0, sizeof(*legacy_settings)); 383 /* this also clears the deprecated fields in legacy structure: 384 * __u8 transceiver; 385 * __u32 maxtxpkt; 386 * __u32 maxrxpkt; 387 */ 388 389 retval &= ethtool_convert_link_mode_to_legacy_u32( 390 &legacy_settings->supported, 391 link_ksettings->link_modes.supported); 392 retval &= ethtool_convert_link_mode_to_legacy_u32( 393 &legacy_settings->advertising, 394 link_ksettings->link_modes.advertising); 395 retval &= ethtool_convert_link_mode_to_legacy_u32( 396 &legacy_settings->lp_advertising, 397 link_ksettings->link_modes.lp_advertising); 398 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); 399 legacy_settings->duplex 400 = link_ksettings->base.duplex; 401 legacy_settings->port 402 = link_ksettings->base.port; 403 legacy_settings->phy_address 404 = link_ksettings->base.phy_address; 405 legacy_settings->autoneg 406 = link_ksettings->base.autoneg; 407 legacy_settings->mdio_support 408 = link_ksettings->base.mdio_support; 409 legacy_settings->eth_tp_mdix 410 = link_ksettings->base.eth_tp_mdix; 411 legacy_settings->eth_tp_mdix_ctrl 412 = link_ksettings->base.eth_tp_mdix_ctrl; 413 legacy_settings->transceiver 414 = link_ksettings->base.transceiver; 415 return retval; 416} 417 418/* number of 32-bit words to store the user's link mode bitmaps */ 419#define __ETHTOOL_LINK_MODE_MASK_NU32 \ 420 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) 421 422/* layout of the struct passed from/to userland */ 423struct ethtool_link_usettings { 424 struct ethtool_link_settings base; 425 struct { 426 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; 427 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 428 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 429 } link_modes; 430}; 431 432/* Internal kernel helper to query a device ethtool_link_settings. */ 433int __ethtool_get_link_ksettings(struct net_device *dev, 434 struct ethtool_link_ksettings *link_ksettings) 435{ 436 ASSERT_RTNL(); 437 438 if (!dev->ethtool_ops->get_link_ksettings) 439 return -EOPNOTSUPP; 440 441 memset(link_ksettings, 0, sizeof(*link_ksettings)); 442 return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings); 443} 444EXPORT_SYMBOL(__ethtool_get_link_ksettings); 445 446/* convert ethtool_link_usettings in user space to a kernel internal 447 * ethtool_link_ksettings. return 0 on success, errno on error. 448 */ 449static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, 450 const void __user *from) 451{ 452 struct ethtool_link_usettings link_usettings; 453 454 if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) 455 return -EFAULT; 456 457 memcpy(&to->base, &link_usettings.base, sizeof(to->base)); 458 bitmap_from_arr32(to->link_modes.supported, 459 link_usettings.link_modes.supported, 460 __ETHTOOL_LINK_MODE_MASK_NBITS); 461 bitmap_from_arr32(to->link_modes.advertising, 462 link_usettings.link_modes.advertising, 463 __ETHTOOL_LINK_MODE_MASK_NBITS); 464 bitmap_from_arr32(to->link_modes.lp_advertising, 465 link_usettings.link_modes.lp_advertising, 466 __ETHTOOL_LINK_MODE_MASK_NBITS); 467 468 return 0; 469} 470 471/* Check if the user is trying to change anything besides speed/duplex */ 472bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd) 473{ 474 struct ethtool_link_settings base2 = {}; 475 476 base2.speed = cmd->base.speed; 477 base2.port = PORT_OTHER; 478 base2.duplex = cmd->base.duplex; 479 base2.cmd = cmd->base.cmd; 480 base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords; 481 482 return !memcmp(&base2, &cmd->base, sizeof(base2)) && 483 bitmap_empty(cmd->link_modes.supported, 484 __ETHTOOL_LINK_MODE_MASK_NBITS) && 485 bitmap_empty(cmd->link_modes.lp_advertising, 486 __ETHTOOL_LINK_MODE_MASK_NBITS); 487} 488 489/* convert a kernel internal ethtool_link_ksettings to 490 * ethtool_link_usettings in user space. return 0 on success, errno on 491 * error. 492 */ 493static int 494store_link_ksettings_for_user(void __user *to, 495 const struct ethtool_link_ksettings *from) 496{ 497 struct ethtool_link_usettings link_usettings; 498 499 memcpy(&link_usettings, from, sizeof(link_usettings)); 500 bitmap_to_arr32(link_usettings.link_modes.supported, 501 from->link_modes.supported, 502 __ETHTOOL_LINK_MODE_MASK_NBITS); 503 bitmap_to_arr32(link_usettings.link_modes.advertising, 504 from->link_modes.advertising, 505 __ETHTOOL_LINK_MODE_MASK_NBITS); 506 bitmap_to_arr32(link_usettings.link_modes.lp_advertising, 507 from->link_modes.lp_advertising, 508 __ETHTOOL_LINK_MODE_MASK_NBITS); 509 510 if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) 511 return -EFAULT; 512 513 return 0; 514} 515 516/* Query device for its ethtool_link_settings. */ 517static int ethtool_get_link_ksettings(struct net_device *dev, 518 void __user *useraddr) 519{ 520 int err = 0; 521 struct ethtool_link_ksettings link_ksettings; 522 523 ASSERT_RTNL(); 524 if (!dev->ethtool_ops->get_link_ksettings) 525 return -EOPNOTSUPP; 526 527 /* handle bitmap nbits handshake */ 528 if (copy_from_user(&link_ksettings.base, useraddr, 529 sizeof(link_ksettings.base))) 530 return -EFAULT; 531 532 if (__ETHTOOL_LINK_MODE_MASK_NU32 533 != link_ksettings.base.link_mode_masks_nwords) { 534 /* wrong link mode nbits requested */ 535 memset(&link_ksettings, 0, sizeof(link_ksettings)); 536 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 537 /* send back number of words required as negative val */ 538 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, 539 "need too many bits for link modes!"); 540 link_ksettings.base.link_mode_masks_nwords 541 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); 542 543 /* copy the base fields back to user, not the link 544 * mode bitmaps 545 */ 546 if (copy_to_user(useraddr, &link_ksettings.base, 547 sizeof(link_ksettings.base))) 548 return -EFAULT; 549 550 return 0; 551 } 552 553 /* handshake successful: user/kernel agree on 554 * link_mode_masks_nwords 555 */ 556 557 memset(&link_ksettings, 0, sizeof(link_ksettings)); 558 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 559 if (err < 0) 560 return err; 561 562 /* make sure we tell the right values to user */ 563 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 564 link_ksettings.base.link_mode_masks_nwords 565 = __ETHTOOL_LINK_MODE_MASK_NU32; 566 link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED; 567 link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED; 568 link_ksettings.base.rate_matching = RATE_MATCH_NONE; 569 570 return store_link_ksettings_for_user(useraddr, &link_ksettings); 571} 572 573/* Update device ethtool_link_settings. */ 574static int ethtool_set_link_ksettings(struct net_device *dev, 575 void __user *useraddr) 576{ 577 struct ethtool_link_ksettings link_ksettings = {}; 578 int err; 579 580 ASSERT_RTNL(); 581 582 if (!dev->ethtool_ops->set_link_ksettings) 583 return -EOPNOTSUPP; 584 585 /* make sure nbits field has expected value */ 586 if (copy_from_user(&link_ksettings.base, useraddr, 587 sizeof(link_ksettings.base))) 588 return -EFAULT; 589 590 if (__ETHTOOL_LINK_MODE_MASK_NU32 591 != link_ksettings.base.link_mode_masks_nwords) 592 return -EINVAL; 593 594 /* copy the whole structure, now that we know it has expected 595 * format 596 */ 597 err = load_link_ksettings_from_user(&link_ksettings, useraddr); 598 if (err) 599 return err; 600 601 /* re-check nwords field, just in case */ 602 if (__ETHTOOL_LINK_MODE_MASK_NU32 603 != link_ksettings.base.link_mode_masks_nwords) 604 return -EINVAL; 605 606 if (link_ksettings.base.master_slave_cfg || 607 link_ksettings.base.master_slave_state) 608 return -EINVAL; 609 610 err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 611 if (err >= 0) { 612 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); 613 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); 614 } 615 return err; 616} 617 618int ethtool_virtdev_set_link_ksettings(struct net_device *dev, 619 const struct ethtool_link_ksettings *cmd, 620 u32 *dev_speed, u8 *dev_duplex) 621{ 622 u32 speed; 623 u8 duplex; 624 625 speed = cmd->base.speed; 626 duplex = cmd->base.duplex; 627 /* don't allow custom speed and duplex */ 628 if (!ethtool_validate_speed(speed) || 629 !ethtool_validate_duplex(duplex) || 630 !ethtool_virtdev_validate_cmd(cmd)) 631 return -EINVAL; 632 *dev_speed = speed; 633 *dev_duplex = duplex; 634 635 return 0; 636} 637EXPORT_SYMBOL(ethtool_virtdev_set_link_ksettings); 638 639/* Query device for its ethtool_cmd settings. 640 * 641 * Backward compatibility note: for compatibility with legacy ethtool, this is 642 * now implemented via get_link_ksettings. When driver reports higher link mode 643 * bits, a kernel warning is logged once (with name of 1st driver/device) to 644 * recommend user to upgrade ethtool, but the command is successful (only the 645 * lower link mode bits reported back to user). Deprecated fields from 646 * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero. 647 */ 648static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) 649{ 650 struct ethtool_link_ksettings link_ksettings; 651 struct ethtool_cmd cmd; 652 int err; 653 654 ASSERT_RTNL(); 655 if (!dev->ethtool_ops->get_link_ksettings) 656 return -EOPNOTSUPP; 657 658 memset(&link_ksettings, 0, sizeof(link_ksettings)); 659 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 660 if (err < 0) 661 return err; 662 convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings); 663 664 /* send a sensible cmd tag back to user */ 665 cmd.cmd = ETHTOOL_GSET; 666 667 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 668 return -EFAULT; 669 670 return 0; 671} 672 673/* Update device link settings with given ethtool_cmd. 674 * 675 * Backward compatibility note: for compatibility with legacy ethtool, this is 676 * now always implemented via set_link_settings. When user's request updates 677 * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel 678 * warning is logged once (with name of 1st driver/device) to recommend user to 679 * upgrade ethtool, and the request is rejected. 680 */ 681static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) 682{ 683 struct ethtool_link_ksettings link_ksettings; 684 struct ethtool_cmd cmd; 685 int ret; 686 687 ASSERT_RTNL(); 688 689 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 690 return -EFAULT; 691 if (!dev->ethtool_ops->set_link_ksettings) 692 return -EOPNOTSUPP; 693 694 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd)) 695 return -EINVAL; 696 link_ksettings.base.link_mode_masks_nwords = 697 __ETHTOOL_LINK_MODE_MASK_NU32; 698 ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 699 if (ret >= 0) { 700 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); 701 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); 702 } 703 return ret; 704} 705 706static int 707ethtool_get_drvinfo(struct net_device *dev, struct ethtool_devlink_compat *rsp) 708{ 709 const struct ethtool_ops *ops = dev->ethtool_ops; 710 struct device *parent = dev->dev.parent; 711 712 rsp->info.cmd = ETHTOOL_GDRVINFO; 713 strscpy(rsp->info.version, UTS_RELEASE, sizeof(rsp->info.version)); 714 if (ops->get_drvinfo) { 715 ops->get_drvinfo(dev, &rsp->info); 716 if (!rsp->info.bus_info[0] && parent) 717 strscpy(rsp->info.bus_info, dev_name(parent), 718 sizeof(rsp->info.bus_info)); 719 if (!rsp->info.driver[0] && parent && parent->driver) 720 strscpy(rsp->info.driver, parent->driver->name, 721 sizeof(rsp->info.driver)); 722 } else if (parent && parent->driver) { 723 strscpy(rsp->info.bus_info, dev_name(parent), 724 sizeof(rsp->info.bus_info)); 725 strscpy(rsp->info.driver, parent->driver->name, 726 sizeof(rsp->info.driver)); 727 } else if (dev->rtnl_link_ops) { 728 strscpy(rsp->info.driver, dev->rtnl_link_ops->kind, 729 sizeof(rsp->info.driver)); 730 } else { 731 return -EOPNOTSUPP; 732 } 733 734 /* 735 * this method of obtaining string set info is deprecated; 736 * Use ETHTOOL_GSSET_INFO instead. 737 */ 738 if (ops->get_sset_count) { 739 int rc; 740 741 rc = ops->get_sset_count(dev, ETH_SS_TEST); 742 if (rc >= 0) 743 rsp->info.testinfo_len = rc; 744 rc = ops->get_sset_count(dev, ETH_SS_STATS); 745 if (rc >= 0) 746 rsp->info.n_stats = rc; 747 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); 748 if (rc >= 0) 749 rsp->info.n_priv_flags = rc; 750 } 751 if (ops->get_regs_len) { 752 int ret = ops->get_regs_len(dev); 753 754 if (ret > 0) 755 rsp->info.regdump_len = ret; 756 } 757 758 if (ops->get_eeprom_len) 759 rsp->info.eedump_len = ops->get_eeprom_len(dev); 760 761 if (!rsp->info.fw_version[0]) 762 rsp->devlink = netdev_to_devlink_get(dev); 763 764 return 0; 765} 766 767static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, 768 void __user *useraddr) 769{ 770 struct ethtool_sset_info info; 771 u64 sset_mask; 772 int i, idx = 0, n_bits = 0, ret, rc; 773 u32 *info_buf = NULL; 774 775 if (copy_from_user(&info, useraddr, sizeof(info))) 776 return -EFAULT; 777 778 /* store copy of mask, because we zero struct later on */ 779 sset_mask = info.sset_mask; 780 if (!sset_mask) 781 return 0; 782 783 /* calculate size of return buffer */ 784 n_bits = hweight64(sset_mask); 785 786 memset(&info, 0, sizeof(info)); 787 info.cmd = ETHTOOL_GSSET_INFO; 788 789 info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER); 790 if (!info_buf) 791 return -ENOMEM; 792 793 /* 794 * fill return buffer based on input bitmask and successful 795 * get_sset_count return 796 */ 797 for (i = 0; i < 64; i++) { 798 if (!(sset_mask & (1ULL << i))) 799 continue; 800 801 rc = __ethtool_get_sset_count(dev, i); 802 if (rc >= 0) { 803 info.sset_mask |= (1ULL << i); 804 info_buf[idx++] = rc; 805 } 806 } 807 808 ret = -EFAULT; 809 if (copy_to_user(useraddr, &info, sizeof(info))) 810 goto out; 811 812 useraddr += offsetof(struct ethtool_sset_info, data); 813 if (copy_to_user(useraddr, info_buf, array_size(idx, sizeof(u32)))) 814 goto out; 815 816 ret = 0; 817 818out: 819 kfree(info_buf); 820 return ret; 821} 822 823static noinline_for_stack int 824ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc, 825 const struct compat_ethtool_rxnfc __user *useraddr, 826 size_t size) 827{ 828 struct compat_ethtool_rxnfc crxnfc = {}; 829 830 /* We expect there to be holes between fs.m_ext and 831 * fs.ring_cookie and at the end of fs, but nowhere else. 832 * On non-x86, no conversion should be needed. 833 */ 834 BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) && 835 sizeof(struct compat_ethtool_rxnfc) != 836 sizeof(struct ethtool_rxnfc)); 837 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) + 838 sizeof(useraddr->fs.m_ext) != 839 offsetof(struct ethtool_rxnfc, fs.m_ext) + 840 sizeof(rxnfc->fs.m_ext)); 841 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) - 842 offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) != 843 offsetof(struct ethtool_rxnfc, fs.location) - 844 offsetof(struct ethtool_rxnfc, fs.ring_cookie)); 845 846 if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc)))) 847 return -EFAULT; 848 849 *rxnfc = (struct ethtool_rxnfc) { 850 .cmd = crxnfc.cmd, 851 .flow_type = crxnfc.flow_type, 852 .data = crxnfc.data, 853 .fs = { 854 .flow_type = crxnfc.fs.flow_type, 855 .h_u = crxnfc.fs.h_u, 856 .h_ext = crxnfc.fs.h_ext, 857 .m_u = crxnfc.fs.m_u, 858 .m_ext = crxnfc.fs.m_ext, 859 .ring_cookie = crxnfc.fs.ring_cookie, 860 .location = crxnfc.fs.location, 861 }, 862 .rule_cnt = crxnfc.rule_cnt, 863 }; 864 865 return 0; 866} 867 868static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc, 869 const void __user *useraddr, 870 size_t size) 871{ 872 if (compat_need_64bit_alignment_fixup()) 873 return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size); 874 875 if (copy_from_user(rxnfc, useraddr, size)) 876 return -EFAULT; 877 878 return 0; 879} 880 881static int ethtool_rxnfc_copy_to_compat(void __user *useraddr, 882 const struct ethtool_rxnfc *rxnfc, 883 size_t size, const u32 *rule_buf) 884{ 885 struct compat_ethtool_rxnfc crxnfc; 886 887 memset(&crxnfc, 0, sizeof(crxnfc)); 888 crxnfc = (struct compat_ethtool_rxnfc) { 889 .cmd = rxnfc->cmd, 890 .flow_type = rxnfc->flow_type, 891 .data = rxnfc->data, 892 .fs = { 893 .flow_type = rxnfc->fs.flow_type, 894 .h_u = rxnfc->fs.h_u, 895 .h_ext = rxnfc->fs.h_ext, 896 .m_u = rxnfc->fs.m_u, 897 .m_ext = rxnfc->fs.m_ext, 898 .ring_cookie = rxnfc->fs.ring_cookie, 899 .location = rxnfc->fs.location, 900 }, 901 .rule_cnt = rxnfc->rule_cnt, 902 }; 903 904 if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc)))) 905 return -EFAULT; 906 907 return 0; 908} 909 910static int ethtool_rxnfc_copy_struct(u32 cmd, struct ethtool_rxnfc *info, 911 size_t *info_size, void __user *useraddr) 912{ 913 /* struct ethtool_rxnfc was originally defined for 914 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 915 * members. User-space might still be using that 916 * definition. 917 */ 918 if (cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) 919 *info_size = (offsetof(struct ethtool_rxnfc, data) + 920 sizeof(info->data)); 921 922 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) 923 return -EFAULT; 924 925 if ((cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) && info->flow_type & FLOW_RSS) { 926 *info_size = sizeof(*info); 927 if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) 928 return -EFAULT; 929 /* Since malicious users may modify the original data, 930 * we need to check whether FLOW_RSS is still requested. 931 */ 932 if (!(info->flow_type & FLOW_RSS)) 933 return -EINVAL; 934 } 935 936 if (info->cmd != cmd) 937 return -EINVAL; 938 939 return 0; 940} 941 942static int ethtool_rxnfc_copy_to_user(void __user *useraddr, 943 const struct ethtool_rxnfc *rxnfc, 944 size_t size, const u32 *rule_buf) 945{ 946 int ret; 947 948 if (compat_need_64bit_alignment_fixup()) { 949 ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size, 950 rule_buf); 951 useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs); 952 } else { 953 ret = copy_to_user(useraddr, rxnfc, size); 954 useraddr += offsetof(struct ethtool_rxnfc, rule_locs); 955 } 956 957 if (ret) 958 return -EFAULT; 959 960 if (rule_buf) { 961 if (copy_to_user(useraddr, rule_buf, 962 rxnfc->rule_cnt * sizeof(u32))) 963 return -EFAULT; 964 } 965 966 return 0; 967} 968 969static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, 970 u32 cmd, void __user *useraddr) 971{ 972 struct ethtool_rxnfc info; 973 size_t info_size = sizeof(info); 974 int rc; 975 976 if (!dev->ethtool_ops->set_rxnfc) 977 return -EOPNOTSUPP; 978 979 rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 980 if (rc) 981 return rc; 982 983 rc = dev->ethtool_ops->set_rxnfc(dev, &info); 984 if (rc) 985 return rc; 986 987 if (cmd == ETHTOOL_SRXCLSRLINS && 988 ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL)) 989 return -EFAULT; 990 991 return 0; 992} 993 994static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, 995 u32 cmd, void __user *useraddr) 996{ 997 struct ethtool_rxnfc info; 998 size_t info_size = sizeof(info); 999 const struct ethtool_ops *ops = dev->ethtool_ops; 1000 int ret; 1001 void *rule_buf = NULL; 1002 1003 if (!ops->get_rxnfc) 1004 return -EOPNOTSUPP; 1005 1006 ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); 1007 if (ret) 1008 return ret; 1009 1010 if (info.cmd == ETHTOOL_GRXCLSRLALL) { 1011 if (info.rule_cnt > 0) { 1012 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) 1013 rule_buf = kcalloc(info.rule_cnt, sizeof(u32), 1014 GFP_USER); 1015 if (!rule_buf) 1016 return -ENOMEM; 1017 } 1018 } 1019 1020 ret = ops->get_rxnfc(dev, &info, rule_buf); 1021 if (ret < 0) 1022 goto err_out; 1023 1024 ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf); 1025err_out: 1026 kfree(rule_buf); 1027 1028 return ret; 1029} 1030 1031static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, 1032 struct ethtool_rxnfc *rx_rings, 1033 u32 size) 1034{ 1035 int i; 1036 1037 if (copy_from_user(indir, useraddr, array_size(size, sizeof(indir[0])))) 1038 return -EFAULT; 1039 1040 /* Validate ring indices */ 1041 for (i = 0; i < size; i++) 1042 if (indir[i] >= rx_rings->data) 1043 return -EINVAL; 1044 1045 return 0; 1046} 1047 1048u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; 1049 1050void netdev_rss_key_fill(void *buffer, size_t len) 1051{ 1052 BUG_ON(len > sizeof(netdev_rss_key)); 1053 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); 1054 memcpy(buffer, netdev_rss_key, len); 1055} 1056EXPORT_SYMBOL(netdev_rss_key_fill); 1057 1058static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, 1059 void __user *useraddr) 1060{ 1061 u32 user_size, dev_size; 1062 u32 *indir; 1063 int ret; 1064 1065 if (!dev->ethtool_ops->get_rxfh_indir_size || 1066 !dev->ethtool_ops->get_rxfh) 1067 return -EOPNOTSUPP; 1068 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev); 1069 if (dev_size == 0) 1070 return -EOPNOTSUPP; 1071 1072 if (copy_from_user(&user_size, 1073 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1074 sizeof(user_size))) 1075 return -EFAULT; 1076 1077 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), 1078 &dev_size, sizeof(dev_size))) 1079 return -EFAULT; 1080 1081 /* If the user buffer size is 0, this is just a query for the 1082 * device table size. Otherwise, if it's smaller than the 1083 * device table size it's an error. 1084 */ 1085 if (user_size < dev_size) 1086 return user_size == 0 ? 0 : -EINVAL; 1087 1088 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); 1089 if (!indir) 1090 return -ENOMEM; 1091 1092 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL); 1093 if (ret) 1094 goto out; 1095 1096 if (copy_to_user(useraddr + 1097 offsetof(struct ethtool_rxfh_indir, ring_index[0]), 1098 indir, dev_size * sizeof(indir[0]))) 1099 ret = -EFAULT; 1100 1101out: 1102 kfree(indir); 1103 return ret; 1104} 1105 1106static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, 1107 void __user *useraddr) 1108{ 1109 struct ethtool_rxnfc rx_rings; 1110 u32 user_size, dev_size, i; 1111 u32 *indir; 1112 const struct ethtool_ops *ops = dev->ethtool_ops; 1113 int ret; 1114 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); 1115 1116 if (!ops->get_rxfh_indir_size || !ops->set_rxfh || 1117 !ops->get_rxnfc) 1118 return -EOPNOTSUPP; 1119 1120 dev_size = ops->get_rxfh_indir_size(dev); 1121 if (dev_size == 0) 1122 return -EOPNOTSUPP; 1123 1124 if (copy_from_user(&user_size, 1125 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1126 sizeof(user_size))) 1127 return -EFAULT; 1128 1129 if (user_size != 0 && user_size != dev_size) 1130 return -EINVAL; 1131 1132 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); 1133 if (!indir) 1134 return -ENOMEM; 1135 1136 rx_rings.cmd = ETHTOOL_GRXRINGS; 1137 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1138 if (ret) 1139 goto out; 1140 1141 if (user_size == 0) { 1142 for (i = 0; i < dev_size; i++) 1143 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1144 } else { 1145 ret = ethtool_copy_validate_indir(indir, 1146 useraddr + ringidx_offset, 1147 &rx_rings, 1148 dev_size); 1149 if (ret) 1150 goto out; 1151 } 1152 1153 ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE); 1154 if (ret) 1155 goto out; 1156 1157 /* indicate whether rxfh was set to default */ 1158 if (user_size == 0) 1159 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1160 else 1161 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1162 1163out: 1164 kfree(indir); 1165 return ret; 1166} 1167 1168static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, 1169 void __user *useraddr) 1170{ 1171 int ret; 1172 const struct ethtool_ops *ops = dev->ethtool_ops; 1173 u32 user_indir_size, user_key_size; 1174 u32 dev_indir_size = 0, dev_key_size = 0; 1175 struct ethtool_rxfh rxfh; 1176 u32 total_size; 1177 u32 indir_bytes; 1178 u32 *indir = NULL; 1179 u8 dev_hfunc = 0; 1180 u8 *hkey = NULL; 1181 u8 *rss_config; 1182 1183 if (!ops->get_rxfh) 1184 return -EOPNOTSUPP; 1185 1186 if (ops->get_rxfh_indir_size) 1187 dev_indir_size = ops->get_rxfh_indir_size(dev); 1188 if (ops->get_rxfh_key_size) 1189 dev_key_size = ops->get_rxfh_key_size(dev); 1190 1191 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1192 return -EFAULT; 1193 user_indir_size = rxfh.indir_size; 1194 user_key_size = rxfh.key_size; 1195 1196 /* Check that reserved fields are 0 for now */ 1197 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32) 1198 return -EINVAL; 1199 /* Most drivers don't handle rss_context, check it's 0 as well */ 1200 if (rxfh.rss_context && !ops->get_rxfh_context) 1201 return -EOPNOTSUPP; 1202 1203 rxfh.indir_size = dev_indir_size; 1204 rxfh.key_size = dev_key_size; 1205 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) 1206 return -EFAULT; 1207 1208 if ((user_indir_size && (user_indir_size != dev_indir_size)) || 1209 (user_key_size && (user_key_size != dev_key_size))) 1210 return -EINVAL; 1211 1212 indir_bytes = user_indir_size * sizeof(indir[0]); 1213 total_size = indir_bytes + user_key_size; 1214 rss_config = kzalloc(total_size, GFP_USER); 1215 if (!rss_config) 1216 return -ENOMEM; 1217 1218 if (user_indir_size) 1219 indir = (u32 *)rss_config; 1220 1221 if (user_key_size) 1222 hkey = rss_config + indir_bytes; 1223 1224 if (rxfh.rss_context) 1225 ret = dev->ethtool_ops->get_rxfh_context(dev, indir, hkey, 1226 &dev_hfunc, 1227 rxfh.rss_context); 1228 else 1229 ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc); 1230 if (ret) 1231 goto out; 1232 1233 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), 1234 &dev_hfunc, sizeof(rxfh.hfunc))) { 1235 ret = -EFAULT; 1236 } else if (copy_to_user(useraddr + 1237 offsetof(struct ethtool_rxfh, rss_config[0]), 1238 rss_config, total_size)) { 1239 ret = -EFAULT; 1240 } 1241out: 1242 kfree(rss_config); 1243 1244 return ret; 1245} 1246 1247static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, 1248 void __user *useraddr) 1249{ 1250 int ret; 1251 const struct ethtool_ops *ops = dev->ethtool_ops; 1252 struct ethtool_rxnfc rx_rings; 1253 struct ethtool_rxfh rxfh; 1254 u32 dev_indir_size = 0, dev_key_size = 0, i; 1255 u32 *indir = NULL, indir_bytes = 0; 1256 u8 *hkey = NULL; 1257 u8 *rss_config; 1258 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); 1259 bool delete = false; 1260 1261 if (!ops->get_rxnfc || !ops->set_rxfh) 1262 return -EOPNOTSUPP; 1263 1264 if (ops->get_rxfh_indir_size) 1265 dev_indir_size = ops->get_rxfh_indir_size(dev); 1266 if (ops->get_rxfh_key_size) 1267 dev_key_size = ops->get_rxfh_key_size(dev); 1268 1269 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1270 return -EFAULT; 1271 1272 /* Check that reserved fields are 0 for now */ 1273 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32) 1274 return -EINVAL; 1275 /* Most drivers don't handle rss_context, check it's 0 as well */ 1276 if (rxfh.rss_context && !ops->set_rxfh_context) 1277 return -EOPNOTSUPP; 1278 1279 /* If either indir, hash key or function is valid, proceed further. 1280 * Must request at least one change: indir size, hash key or function. 1281 */ 1282 if ((rxfh.indir_size && 1283 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && 1284 rxfh.indir_size != dev_indir_size) || 1285 (rxfh.key_size && (rxfh.key_size != dev_key_size)) || 1286 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && 1287 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE)) 1288 return -EINVAL; 1289 1290 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1291 indir_bytes = dev_indir_size * sizeof(indir[0]); 1292 1293 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER); 1294 if (!rss_config) 1295 return -ENOMEM; 1296 1297 rx_rings.cmd = ETHTOOL_GRXRINGS; 1298 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1299 if (ret) 1300 goto out; 1301 1302 /* rxfh.indir_size == 0 means reset the indir table to default (master 1303 * context) or delete the context (other RSS contexts). 1304 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. 1305 */ 1306 if (rxfh.indir_size && 1307 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { 1308 indir = (u32 *)rss_config; 1309 ret = ethtool_copy_validate_indir(indir, 1310 useraddr + rss_cfg_offset, 1311 &rx_rings, 1312 rxfh.indir_size); 1313 if (ret) 1314 goto out; 1315 } else if (rxfh.indir_size == 0) { 1316 if (rxfh.rss_context == 0) { 1317 indir = (u32 *)rss_config; 1318 for (i = 0; i < dev_indir_size; i++) 1319 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1320 } else { 1321 delete = true; 1322 } 1323 } 1324 1325 if (rxfh.key_size) { 1326 hkey = rss_config + indir_bytes; 1327 if (copy_from_user(hkey, 1328 useraddr + rss_cfg_offset + indir_bytes, 1329 rxfh.key_size)) { 1330 ret = -EFAULT; 1331 goto out; 1332 } 1333 } 1334 1335 if (rxfh.rss_context) 1336 ret = ops->set_rxfh_context(dev, indir, hkey, rxfh.hfunc, 1337 &rxfh.rss_context, delete); 1338 else 1339 ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc); 1340 if (ret) 1341 goto out; 1342 1343 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), 1344 &rxfh.rss_context, sizeof(rxfh.rss_context))) 1345 ret = -EFAULT; 1346 1347 if (!rxfh.rss_context) { 1348 /* indicate whether rxfh was set to default */ 1349 if (rxfh.indir_size == 0) 1350 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1351 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1352 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1353 } 1354 1355out: 1356 kfree(rss_config); 1357 return ret; 1358} 1359 1360static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) 1361{ 1362 struct ethtool_regs regs; 1363 const struct ethtool_ops *ops = dev->ethtool_ops; 1364 void *regbuf; 1365 int reglen, ret; 1366 1367 if (!ops->get_regs || !ops->get_regs_len) 1368 return -EOPNOTSUPP; 1369 1370 if (copy_from_user(®s, useraddr, sizeof(regs))) 1371 return -EFAULT; 1372 1373 reglen = ops->get_regs_len(dev); 1374 if (reglen <= 0) 1375 return reglen; 1376 1377 if (regs.len > reglen) 1378 regs.len = reglen; 1379 1380 regbuf = vzalloc(reglen); 1381 if (!regbuf) 1382 return -ENOMEM; 1383 1384 if (regs.len < reglen) 1385 reglen = regs.len; 1386 1387 ops->get_regs(dev, ®s, regbuf); 1388 1389 ret = -EFAULT; 1390 if (copy_to_user(useraddr, ®s, sizeof(regs))) 1391 goto out; 1392 useraddr += offsetof(struct ethtool_regs, data); 1393 if (copy_to_user(useraddr, regbuf, reglen)) 1394 goto out; 1395 ret = 0; 1396 1397 out: 1398 vfree(regbuf); 1399 return ret; 1400} 1401 1402static int ethtool_reset(struct net_device *dev, char __user *useraddr) 1403{ 1404 struct ethtool_value reset; 1405 int ret; 1406 1407 if (!dev->ethtool_ops->reset) 1408 return -EOPNOTSUPP; 1409 1410 if (copy_from_user(&reset, useraddr, sizeof(reset))) 1411 return -EFAULT; 1412 1413 ret = dev->ethtool_ops->reset(dev, &reset.data); 1414 if (ret) 1415 return ret; 1416 1417 if (copy_to_user(useraddr, &reset, sizeof(reset))) 1418 return -EFAULT; 1419 return 0; 1420} 1421 1422static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) 1423{ 1424 struct ethtool_wolinfo wol; 1425 1426 if (!dev->ethtool_ops->get_wol) 1427 return -EOPNOTSUPP; 1428 1429 memset(&wol, 0, sizeof(struct ethtool_wolinfo)); 1430 wol.cmd = ETHTOOL_GWOL; 1431 dev->ethtool_ops->get_wol(dev, &wol); 1432 1433 if (copy_to_user(useraddr, &wol, sizeof(wol))) 1434 return -EFAULT; 1435 return 0; 1436} 1437 1438static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) 1439{ 1440 struct ethtool_wolinfo wol, cur_wol; 1441 int ret; 1442 1443 if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol) 1444 return -EOPNOTSUPP; 1445 1446 memset(&cur_wol, 0, sizeof(struct ethtool_wolinfo)); 1447 cur_wol.cmd = ETHTOOL_GWOL; 1448 dev->ethtool_ops->get_wol(dev, &cur_wol); 1449 1450 if (copy_from_user(&wol, useraddr, sizeof(wol))) 1451 return -EFAULT; 1452 1453 if (wol.wolopts & ~cur_wol.supported) 1454 return -EINVAL; 1455 1456 if (wol.wolopts == cur_wol.wolopts && 1457 !memcmp(wol.sopass, cur_wol.sopass, sizeof(wol.sopass))) 1458 return 0; 1459 1460 ret = dev->ethtool_ops->set_wol(dev, &wol); 1461 if (ret) 1462 return ret; 1463 1464 dev->wol_enabled = !!wol.wolopts; 1465 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL); 1466 1467 return 0; 1468} 1469 1470static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) 1471{ 1472 struct ethtool_eee edata; 1473 int rc; 1474 1475 if (!dev->ethtool_ops->get_eee) 1476 return -EOPNOTSUPP; 1477 1478 memset(&edata, 0, sizeof(struct ethtool_eee)); 1479 edata.cmd = ETHTOOL_GEEE; 1480 rc = dev->ethtool_ops->get_eee(dev, &edata); 1481 1482 if (rc) 1483 return rc; 1484 1485 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1486 return -EFAULT; 1487 1488 return 0; 1489} 1490 1491static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) 1492{ 1493 struct ethtool_eee edata; 1494 int ret; 1495 1496 if (!dev->ethtool_ops->set_eee) 1497 return -EOPNOTSUPP; 1498 1499 if (copy_from_user(&edata, useraddr, sizeof(edata))) 1500 return -EFAULT; 1501 1502 ret = dev->ethtool_ops->set_eee(dev, &edata); 1503 if (!ret) 1504 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL); 1505 return ret; 1506} 1507 1508static int ethtool_nway_reset(struct net_device *dev) 1509{ 1510 if (!dev->ethtool_ops->nway_reset) 1511 return -EOPNOTSUPP; 1512 1513 return dev->ethtool_ops->nway_reset(dev); 1514} 1515 1516static int ethtool_get_link(struct net_device *dev, char __user *useraddr) 1517{ 1518 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; 1519 int link = __ethtool_get_link(dev); 1520 1521 if (link < 0) 1522 return link; 1523 1524 edata.data = link; 1525 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1526 return -EFAULT; 1527 return 0; 1528} 1529 1530static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, 1531 int (*getter)(struct net_device *, 1532 struct ethtool_eeprom *, u8 *), 1533 u32 total_len) 1534{ 1535 struct ethtool_eeprom eeprom; 1536 void __user *userbuf = useraddr + sizeof(eeprom); 1537 u32 bytes_remaining; 1538 u8 *data; 1539 int ret = 0; 1540 1541 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1542 return -EFAULT; 1543 1544 /* Check for wrap and zero */ 1545 if (eeprom.offset + eeprom.len <= eeprom.offset) 1546 return -EINVAL; 1547 1548 /* Check for exceeding total eeprom len */ 1549 if (eeprom.offset + eeprom.len > total_len) 1550 return -EINVAL; 1551 1552 data = kzalloc(PAGE_SIZE, GFP_USER); 1553 if (!data) 1554 return -ENOMEM; 1555 1556 bytes_remaining = eeprom.len; 1557 while (bytes_remaining > 0) { 1558 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1559 1560 ret = getter(dev, &eeprom, data); 1561 if (ret) 1562 break; 1563 if (!eeprom.len) { 1564 ret = -EIO; 1565 break; 1566 } 1567 if (copy_to_user(userbuf, data, eeprom.len)) { 1568 ret = -EFAULT; 1569 break; 1570 } 1571 userbuf += eeprom.len; 1572 eeprom.offset += eeprom.len; 1573 bytes_remaining -= eeprom.len; 1574 } 1575 1576 eeprom.len = userbuf - (useraddr + sizeof(eeprom)); 1577 eeprom.offset -= eeprom.len; 1578 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) 1579 ret = -EFAULT; 1580 1581 kfree(data); 1582 return ret; 1583} 1584 1585static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) 1586{ 1587 const struct ethtool_ops *ops = dev->ethtool_ops; 1588 1589 if (!ops->get_eeprom || !ops->get_eeprom_len || 1590 !ops->get_eeprom_len(dev)) 1591 return -EOPNOTSUPP; 1592 1593 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, 1594 ops->get_eeprom_len(dev)); 1595} 1596 1597static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) 1598{ 1599 struct ethtool_eeprom eeprom; 1600 const struct ethtool_ops *ops = dev->ethtool_ops; 1601 void __user *userbuf = useraddr + sizeof(eeprom); 1602 u32 bytes_remaining; 1603 u8 *data; 1604 int ret = 0; 1605 1606 if (!ops->set_eeprom || !ops->get_eeprom_len || 1607 !ops->get_eeprom_len(dev)) 1608 return -EOPNOTSUPP; 1609 1610 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1611 return -EFAULT; 1612 1613 /* Check for wrap and zero */ 1614 if (eeprom.offset + eeprom.len <= eeprom.offset) 1615 return -EINVAL; 1616 1617 /* Check for exceeding total eeprom len */ 1618 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) 1619 return -EINVAL; 1620 1621 data = kzalloc(PAGE_SIZE, GFP_USER); 1622 if (!data) 1623 return -ENOMEM; 1624 1625 bytes_remaining = eeprom.len; 1626 while (bytes_remaining > 0) { 1627 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1628 1629 if (copy_from_user(data, userbuf, eeprom.len)) { 1630 ret = -EFAULT; 1631 break; 1632 } 1633 ret = ops->set_eeprom(dev, &eeprom, data); 1634 if (ret) 1635 break; 1636 userbuf += eeprom.len; 1637 eeprom.offset += eeprom.len; 1638 bytes_remaining -= eeprom.len; 1639 } 1640 1641 kfree(data); 1642 return ret; 1643} 1644 1645static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, 1646 void __user *useraddr) 1647{ 1648 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 1649 struct kernel_ethtool_coalesce kernel_coalesce = {}; 1650 int ret; 1651 1652 if (!dev->ethtool_ops->get_coalesce) 1653 return -EOPNOTSUPP; 1654 1655 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 1656 NULL); 1657 if (ret) 1658 return ret; 1659 1660 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 1661 return -EFAULT; 1662 return 0; 1663} 1664 1665static bool 1666ethtool_set_coalesce_supported(struct net_device *dev, 1667 struct ethtool_coalesce *coalesce) 1668{ 1669 u32 supported_params = dev->ethtool_ops->supported_coalesce_params; 1670 u32 nonzero_params = 0; 1671 1672 if (coalesce->rx_coalesce_usecs) 1673 nonzero_params |= ETHTOOL_COALESCE_RX_USECS; 1674 if (coalesce->rx_max_coalesced_frames) 1675 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; 1676 if (coalesce->rx_coalesce_usecs_irq) 1677 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; 1678 if (coalesce->rx_max_coalesced_frames_irq) 1679 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; 1680 if (coalesce->tx_coalesce_usecs) 1681 nonzero_params |= ETHTOOL_COALESCE_TX_USECS; 1682 if (coalesce->tx_max_coalesced_frames) 1683 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; 1684 if (coalesce->tx_coalesce_usecs_irq) 1685 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; 1686 if (coalesce->tx_max_coalesced_frames_irq) 1687 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; 1688 if (coalesce->stats_block_coalesce_usecs) 1689 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; 1690 if (coalesce->use_adaptive_rx_coalesce) 1691 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; 1692 if (coalesce->use_adaptive_tx_coalesce) 1693 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; 1694 if (coalesce->pkt_rate_low) 1695 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; 1696 if (coalesce->rx_coalesce_usecs_low) 1697 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; 1698 if (coalesce->rx_max_coalesced_frames_low) 1699 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; 1700 if (coalesce->tx_coalesce_usecs_low) 1701 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; 1702 if (coalesce->tx_max_coalesced_frames_low) 1703 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; 1704 if (coalesce->pkt_rate_high) 1705 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; 1706 if (coalesce->rx_coalesce_usecs_high) 1707 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; 1708 if (coalesce->rx_max_coalesced_frames_high) 1709 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; 1710 if (coalesce->tx_coalesce_usecs_high) 1711 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; 1712 if (coalesce->tx_max_coalesced_frames_high) 1713 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; 1714 if (coalesce->rate_sample_interval) 1715 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; 1716 1717 return (supported_params & nonzero_params) == nonzero_params; 1718} 1719 1720static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, 1721 void __user *useraddr) 1722{ 1723 struct kernel_ethtool_coalesce kernel_coalesce = {}; 1724 struct ethtool_coalesce coalesce; 1725 int ret; 1726 1727 if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce) 1728 return -EOPNOTSUPP; 1729 1730 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 1731 NULL); 1732 if (ret) 1733 return ret; 1734 1735 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) 1736 return -EFAULT; 1737 1738 if (!ethtool_set_coalesce_supported(dev, &coalesce)) 1739 return -EOPNOTSUPP; 1740 1741 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, 1742 NULL); 1743 if (!ret) 1744 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL); 1745 return ret; 1746} 1747 1748static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) 1749{ 1750 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; 1751 struct kernel_ethtool_ringparam kernel_ringparam = {}; 1752 1753 if (!dev->ethtool_ops->get_ringparam) 1754 return -EOPNOTSUPP; 1755 1756 dev->ethtool_ops->get_ringparam(dev, &ringparam, 1757 &kernel_ringparam, NULL); 1758 1759 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) 1760 return -EFAULT; 1761 return 0; 1762} 1763 1764static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) 1765{ 1766 struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM }; 1767 struct kernel_ethtool_ringparam kernel_ringparam; 1768 int ret; 1769 1770 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) 1771 return -EOPNOTSUPP; 1772 1773 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) 1774 return -EFAULT; 1775 1776 dev->ethtool_ops->get_ringparam(dev, &max, &kernel_ringparam, NULL); 1777 1778 /* ensure new ring parameters are within the maximums */ 1779 if (ringparam.rx_pending > max.rx_max_pending || 1780 ringparam.rx_mini_pending > max.rx_mini_max_pending || 1781 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || 1782 ringparam.tx_pending > max.tx_max_pending) 1783 return -EINVAL; 1784 1785 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, 1786 &kernel_ringparam, NULL); 1787 if (!ret) 1788 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL); 1789 return ret; 1790} 1791 1792static noinline_for_stack int ethtool_get_channels(struct net_device *dev, 1793 void __user *useraddr) 1794{ 1795 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; 1796 1797 if (!dev->ethtool_ops->get_channels) 1798 return -EOPNOTSUPP; 1799 1800 dev->ethtool_ops->get_channels(dev, &channels); 1801 1802 if (copy_to_user(useraddr, &channels, sizeof(channels))) 1803 return -EFAULT; 1804 return 0; 1805} 1806 1807static noinline_for_stack int ethtool_set_channels(struct net_device *dev, 1808 void __user *useraddr) 1809{ 1810 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; 1811 u16 from_channel, to_channel; 1812 u64 max_rxnfc_in_use; 1813 u32 max_rxfh_in_use; 1814 unsigned int i; 1815 int ret; 1816 1817 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) 1818 return -EOPNOTSUPP; 1819 1820 if (copy_from_user(&channels, useraddr, sizeof(channels))) 1821 return -EFAULT; 1822 1823 dev->ethtool_ops->get_channels(dev, &curr); 1824 1825 if (channels.rx_count == curr.rx_count && 1826 channels.tx_count == curr.tx_count && 1827 channels.combined_count == curr.combined_count && 1828 channels.other_count == curr.other_count) 1829 return 0; 1830 1831 /* ensure new counts are within the maximums */ 1832 if (channels.rx_count > curr.max_rx || 1833 channels.tx_count > curr.max_tx || 1834 channels.combined_count > curr.max_combined || 1835 channels.other_count > curr.max_other) 1836 return -EINVAL; 1837 1838 /* ensure there is at least one RX and one TX channel */ 1839 if (!channels.combined_count && 1840 (!channels.rx_count || !channels.tx_count)) 1841 return -EINVAL; 1842 1843 /* ensure the new Rx count fits within the configured Rx flow 1844 * indirection table/rxnfc settings */ 1845 if (ethtool_get_max_rxnfc_channel(dev, &max_rxnfc_in_use)) 1846 max_rxnfc_in_use = 0; 1847 if (!netif_is_rxfh_configured(dev) || 1848 ethtool_get_max_rxfh_channel(dev, &max_rxfh_in_use)) 1849 max_rxfh_in_use = 0; 1850 if (channels.combined_count + channels.rx_count <= 1851 max_t(u64, max_rxnfc_in_use, max_rxfh_in_use)) 1852 return -EINVAL; 1853 1854 /* Disabling channels, query zero-copy AF_XDP sockets */ 1855 from_channel = channels.combined_count + 1856 min(channels.rx_count, channels.tx_count); 1857 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); 1858 for (i = from_channel; i < to_channel; i++) 1859 if (xsk_get_pool_from_qid(dev, i)) 1860 return -EINVAL; 1861 1862 ret = dev->ethtool_ops->set_channels(dev, &channels); 1863 if (!ret) 1864 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL); 1865 return ret; 1866} 1867 1868static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) 1869{ 1870 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; 1871 1872 if (!dev->ethtool_ops->get_pauseparam) 1873 return -EOPNOTSUPP; 1874 1875 dev->ethtool_ops->get_pauseparam(dev, &pauseparam); 1876 1877 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) 1878 return -EFAULT; 1879 return 0; 1880} 1881 1882static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) 1883{ 1884 struct ethtool_pauseparam pauseparam; 1885 int ret; 1886 1887 if (!dev->ethtool_ops->set_pauseparam) 1888 return -EOPNOTSUPP; 1889 1890 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) 1891 return -EFAULT; 1892 1893 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); 1894 if (!ret) 1895 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL); 1896 return ret; 1897} 1898 1899static int ethtool_self_test(struct net_device *dev, char __user *useraddr) 1900{ 1901 struct ethtool_test test; 1902 const struct ethtool_ops *ops = dev->ethtool_ops; 1903 u64 *data; 1904 int ret, test_len; 1905 1906 if (!ops->self_test || !ops->get_sset_count) 1907 return -EOPNOTSUPP; 1908 1909 test_len = ops->get_sset_count(dev, ETH_SS_TEST); 1910 if (test_len < 0) 1911 return test_len; 1912 WARN_ON(test_len == 0); 1913 1914 if (copy_from_user(&test, useraddr, sizeof(test))) 1915 return -EFAULT; 1916 1917 test.len = test_len; 1918 data = kcalloc(test_len, sizeof(u64), GFP_USER); 1919 if (!data) 1920 return -ENOMEM; 1921 1922 netif_testing_on(dev); 1923 ops->self_test(dev, &test, data); 1924 netif_testing_off(dev); 1925 1926 ret = -EFAULT; 1927 if (copy_to_user(useraddr, &test, sizeof(test))) 1928 goto out; 1929 useraddr += sizeof(test); 1930 if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) 1931 goto out; 1932 ret = 0; 1933 1934 out: 1935 kfree(data); 1936 return ret; 1937} 1938 1939static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) 1940{ 1941 struct ethtool_gstrings gstrings; 1942 u8 *data; 1943 int ret; 1944 1945 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) 1946 return -EFAULT; 1947 1948 ret = __ethtool_get_sset_count(dev, gstrings.string_set); 1949 if (ret < 0) 1950 return ret; 1951 if (ret > S32_MAX / ETH_GSTRING_LEN) 1952 return -ENOMEM; 1953 WARN_ON_ONCE(!ret); 1954 1955 gstrings.len = ret; 1956 1957 if (gstrings.len) { 1958 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); 1959 if (!data) 1960 return -ENOMEM; 1961 1962 __ethtool_get_strings(dev, gstrings.string_set, data); 1963 } else { 1964 data = NULL; 1965 } 1966 1967 ret = -EFAULT; 1968 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) 1969 goto out; 1970 useraddr += sizeof(gstrings); 1971 if (gstrings.len && 1972 copy_to_user(useraddr, data, 1973 array_size(gstrings.len, ETH_GSTRING_LEN))) 1974 goto out; 1975 ret = 0; 1976 1977out: 1978 vfree(data); 1979 return ret; 1980} 1981 1982__printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) 1983{ 1984 va_list args; 1985 1986 va_start(args, fmt); 1987 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); 1988 va_end(args); 1989 1990 *data += ETH_GSTRING_LEN; 1991} 1992EXPORT_SYMBOL(ethtool_sprintf); 1993 1994static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) 1995{ 1996 struct ethtool_value id; 1997 static bool busy; 1998 const struct ethtool_ops *ops = dev->ethtool_ops; 1999 netdevice_tracker dev_tracker; 2000 int rc; 2001 2002 if (!ops->set_phys_id) 2003 return -EOPNOTSUPP; 2004 2005 if (busy) 2006 return -EBUSY; 2007 2008 if (copy_from_user(&id, useraddr, sizeof(id))) 2009 return -EFAULT; 2010 2011 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); 2012 if (rc < 0) 2013 return rc; 2014 2015 /* Drop the RTNL lock while waiting, but prevent reentry or 2016 * removal of the device. 2017 */ 2018 busy = true; 2019 netdev_hold(dev, &dev_tracker, GFP_KERNEL); 2020 rtnl_unlock(); 2021 2022 if (rc == 0) { 2023 /* Driver will handle this itself */ 2024 schedule_timeout_interruptible( 2025 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); 2026 } else { 2027 /* Driver expects to be called at twice the frequency in rc */ 2028 int n = rc * 2, interval = HZ / n; 2029 u64 count = mul_u32_u32(n, id.data); 2030 u64 i = 0; 2031 2032 do { 2033 rtnl_lock(); 2034 rc = ops->set_phys_id(dev, 2035 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); 2036 rtnl_unlock(); 2037 if (rc) 2038 break; 2039 schedule_timeout_interruptible(interval); 2040 } while (!signal_pending(current) && (!id.data || i < count)); 2041 } 2042 2043 rtnl_lock(); 2044 netdev_put(dev, &dev_tracker); 2045 busy = false; 2046 2047 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); 2048 return rc; 2049} 2050 2051static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) 2052{ 2053 struct ethtool_stats stats; 2054 const struct ethtool_ops *ops = dev->ethtool_ops; 2055 u64 *data; 2056 int ret, n_stats; 2057 2058 if (!ops->get_ethtool_stats || !ops->get_sset_count) 2059 return -EOPNOTSUPP; 2060 2061 n_stats = ops->get_sset_count(dev, ETH_SS_STATS); 2062 if (n_stats < 0) 2063 return n_stats; 2064 if (n_stats > S32_MAX / sizeof(u64)) 2065 return -ENOMEM; 2066 WARN_ON_ONCE(!n_stats); 2067 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2068 return -EFAULT; 2069 2070 stats.n_stats = n_stats; 2071 2072 if (n_stats) { 2073 data = vzalloc(array_size(n_stats, sizeof(u64))); 2074 if (!data) 2075 return -ENOMEM; 2076 ops->get_ethtool_stats(dev, &stats, data); 2077 } else { 2078 data = NULL; 2079 } 2080 2081 ret = -EFAULT; 2082 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2083 goto out; 2084 useraddr += sizeof(stats); 2085 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) 2086 goto out; 2087 ret = 0; 2088 2089 out: 2090 vfree(data); 2091 return ret; 2092} 2093 2094static int ethtool_vzalloc_stats_array(int n_stats, u64 **data) 2095{ 2096 if (n_stats < 0) 2097 return n_stats; 2098 if (n_stats > S32_MAX / sizeof(u64)) 2099 return -ENOMEM; 2100 if (WARN_ON_ONCE(!n_stats)) 2101 return -EOPNOTSUPP; 2102 2103 *data = vzalloc(array_size(n_stats, sizeof(u64))); 2104 if (!*data) 2105 return -ENOMEM; 2106 2107 return 0; 2108} 2109 2110static int ethtool_get_phy_stats_phydev(struct phy_device *phydev, 2111 struct ethtool_stats *stats, 2112 u64 **data) 2113 { 2114 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 2115 int n_stats, ret; 2116 2117 if (!phy_ops || !phy_ops->get_sset_count || !phy_ops->get_stats) 2118 return -EOPNOTSUPP; 2119 2120 n_stats = phy_ops->get_sset_count(phydev); 2121 2122 ret = ethtool_vzalloc_stats_array(n_stats, data); 2123 if (ret) 2124 return ret; 2125 2126 stats->n_stats = n_stats; 2127 return phy_ops->get_stats(phydev, stats, *data); 2128} 2129 2130static int ethtool_get_phy_stats_ethtool(struct net_device *dev, 2131 struct ethtool_stats *stats, 2132 u64 **data) 2133{ 2134 const struct ethtool_ops *ops = dev->ethtool_ops; 2135 int n_stats, ret; 2136 2137 if (!ops || !ops->get_sset_count || ops->get_ethtool_phy_stats) 2138 return -EOPNOTSUPP; 2139 2140 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); 2141 2142 ret = ethtool_vzalloc_stats_array(n_stats, data); 2143 if (ret) 2144 return ret; 2145 2146 stats->n_stats = n_stats; 2147 ops->get_ethtool_phy_stats(dev, stats, *data); 2148 2149 return 0; 2150} 2151 2152static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) 2153{ 2154 struct phy_device *phydev = dev->phydev; 2155 struct ethtool_stats stats; 2156 u64 *data = NULL; 2157 int ret = -EOPNOTSUPP; 2158 2159 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2160 return -EFAULT; 2161 2162 if (phydev) 2163 ret = ethtool_get_phy_stats_phydev(phydev, &stats, &data); 2164 2165 if (ret == -EOPNOTSUPP) 2166 ret = ethtool_get_phy_stats_ethtool(dev, &stats, &data); 2167 2168 if (ret) 2169 goto out; 2170 2171 if (copy_to_user(useraddr, &stats, sizeof(stats))) { 2172 ret = -EFAULT; 2173 goto out; 2174 } 2175 2176 useraddr += sizeof(stats); 2177 if (copy_to_user(useraddr, data, array_size(stats.n_stats, sizeof(u64)))) 2178 ret = -EFAULT; 2179 2180 out: 2181 vfree(data); 2182 return ret; 2183} 2184 2185static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) 2186{ 2187 struct ethtool_perm_addr epaddr; 2188 2189 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) 2190 return -EFAULT; 2191 2192 if (epaddr.size < dev->addr_len) 2193 return -ETOOSMALL; 2194 epaddr.size = dev->addr_len; 2195 2196 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) 2197 return -EFAULT; 2198 useraddr += sizeof(epaddr); 2199 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) 2200 return -EFAULT; 2201 return 0; 2202} 2203 2204static int ethtool_get_value(struct net_device *dev, char __user *useraddr, 2205 u32 cmd, u32 (*actor)(struct net_device *)) 2206{ 2207 struct ethtool_value edata = { .cmd = cmd }; 2208 2209 if (!actor) 2210 return -EOPNOTSUPP; 2211 2212 edata.data = actor(dev); 2213 2214 if (copy_to_user(useraddr, &edata, sizeof(edata))) 2215 return -EFAULT; 2216 return 0; 2217} 2218 2219static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, 2220 void (*actor)(struct net_device *, u32)) 2221{ 2222 struct ethtool_value edata; 2223 2224 if (!actor) 2225 return -EOPNOTSUPP; 2226 2227 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2228 return -EFAULT; 2229 2230 actor(dev, edata.data); 2231 return 0; 2232} 2233 2234static int ethtool_set_value(struct net_device *dev, char __user *useraddr, 2235 int (*actor)(struct net_device *, u32)) 2236{ 2237 struct ethtool_value edata; 2238 2239 if (!actor) 2240 return -EOPNOTSUPP; 2241 2242 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2243 return -EFAULT; 2244 2245 return actor(dev, edata.data); 2246} 2247 2248static int 2249ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) 2250{ 2251 if (!dev->ethtool_ops->flash_device) { 2252 req->devlink = netdev_to_devlink_get(dev); 2253 return 0; 2254 } 2255 2256 return dev->ethtool_ops->flash_device(dev, &req->efl); 2257} 2258 2259static int ethtool_set_dump(struct net_device *dev, 2260 void __user *useraddr) 2261{ 2262 struct ethtool_dump dump; 2263 2264 if (!dev->ethtool_ops->set_dump) 2265 return -EOPNOTSUPP; 2266 2267 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2268 return -EFAULT; 2269 2270 return dev->ethtool_ops->set_dump(dev, &dump); 2271} 2272 2273static int ethtool_get_dump_flag(struct net_device *dev, 2274 void __user *useraddr) 2275{ 2276 int ret; 2277 struct ethtool_dump dump; 2278 const struct ethtool_ops *ops = dev->ethtool_ops; 2279 2280 if (!ops->get_dump_flag) 2281 return -EOPNOTSUPP; 2282 2283 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2284 return -EFAULT; 2285 2286 ret = ops->get_dump_flag(dev, &dump); 2287 if (ret) 2288 return ret; 2289 2290 if (copy_to_user(useraddr, &dump, sizeof(dump))) 2291 return -EFAULT; 2292 return 0; 2293} 2294 2295static int ethtool_get_dump_data(struct net_device *dev, 2296 void __user *useraddr) 2297{ 2298 int ret; 2299 __u32 len; 2300 struct ethtool_dump dump, tmp; 2301 const struct ethtool_ops *ops = dev->ethtool_ops; 2302 void *data = NULL; 2303 2304 if (!ops->get_dump_data || !ops->get_dump_flag) 2305 return -EOPNOTSUPP; 2306 2307 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2308 return -EFAULT; 2309 2310 memset(&tmp, 0, sizeof(tmp)); 2311 tmp.cmd = ETHTOOL_GET_DUMP_FLAG; 2312 ret = ops->get_dump_flag(dev, &tmp); 2313 if (ret) 2314 return ret; 2315 2316 len = min(tmp.len, dump.len); 2317 if (!len) 2318 return -EFAULT; 2319 2320 /* Don't ever let the driver think there's more space available 2321 * than it requested with .get_dump_flag(). 2322 */ 2323 dump.len = len; 2324 2325 /* Always allocate enough space to hold the whole thing so that the 2326 * driver does not need to check the length and bother with partial 2327 * dumping. 2328 */ 2329 data = vzalloc(tmp.len); 2330 if (!data) 2331 return -ENOMEM; 2332 ret = ops->get_dump_data(dev, &dump, data); 2333 if (ret) 2334 goto out; 2335 2336 /* There are two sane possibilities: 2337 * 1. The driver's .get_dump_data() does not touch dump.len. 2338 * 2. Or it may set dump.len to how much it really writes, which 2339 * should be tmp.len (or len if it can do a partial dump). 2340 * In any case respond to userspace with the actual length of data 2341 * it's receiving. 2342 */ 2343 WARN_ON(dump.len != len && dump.len != tmp.len); 2344 dump.len = len; 2345 2346 if (copy_to_user(useraddr, &dump, sizeof(dump))) { 2347 ret = -EFAULT; 2348 goto out; 2349 } 2350 useraddr += offsetof(struct ethtool_dump, data); 2351 if (copy_to_user(useraddr, data, len)) 2352 ret = -EFAULT; 2353out: 2354 vfree(data); 2355 return ret; 2356} 2357 2358static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) 2359{ 2360 struct ethtool_ts_info info; 2361 int err; 2362 2363 err = __ethtool_get_ts_info(dev, &info); 2364 if (err) 2365 return err; 2366 2367 if (copy_to_user(useraddr, &info, sizeof(info))) 2368 return -EFAULT; 2369 2370 return 0; 2371} 2372 2373int ethtool_get_module_info_call(struct net_device *dev, 2374 struct ethtool_modinfo *modinfo) 2375{ 2376 const struct ethtool_ops *ops = dev->ethtool_ops; 2377 struct phy_device *phydev = dev->phydev; 2378 2379 if (dev->sfp_bus) 2380 return sfp_get_module_info(dev->sfp_bus, modinfo); 2381 2382 if (phydev && phydev->drv && phydev->drv->module_info) 2383 return phydev->drv->module_info(phydev, modinfo); 2384 2385 if (ops->get_module_info) 2386 return ops->get_module_info(dev, modinfo); 2387 2388 return -EOPNOTSUPP; 2389} 2390 2391static int ethtool_get_module_info(struct net_device *dev, 2392 void __user *useraddr) 2393{ 2394 int ret; 2395 struct ethtool_modinfo modinfo; 2396 2397 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) 2398 return -EFAULT; 2399 2400 ret = ethtool_get_module_info_call(dev, &modinfo); 2401 if (ret) 2402 return ret; 2403 2404 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) 2405 return -EFAULT; 2406 2407 return 0; 2408} 2409 2410int ethtool_get_module_eeprom_call(struct net_device *dev, 2411 struct ethtool_eeprom *ee, u8 *data) 2412{ 2413 const struct ethtool_ops *ops = dev->ethtool_ops; 2414 struct phy_device *phydev = dev->phydev; 2415 2416 if (dev->sfp_bus) 2417 return sfp_get_module_eeprom(dev->sfp_bus, ee, data); 2418 2419 if (phydev && phydev->drv && phydev->drv->module_eeprom) 2420 return phydev->drv->module_eeprom(phydev, ee, data); 2421 2422 if (ops->get_module_eeprom) 2423 return ops->get_module_eeprom(dev, ee, data); 2424 2425 return -EOPNOTSUPP; 2426} 2427 2428static int ethtool_get_module_eeprom(struct net_device *dev, 2429 void __user *useraddr) 2430{ 2431 int ret; 2432 struct ethtool_modinfo modinfo; 2433 2434 ret = ethtool_get_module_info_call(dev, &modinfo); 2435 if (ret) 2436 return ret; 2437 2438 return ethtool_get_any_eeprom(dev, useraddr, 2439 ethtool_get_module_eeprom_call, 2440 modinfo.eeprom_len); 2441} 2442 2443static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) 2444{ 2445 switch (tuna->id) { 2446 case ETHTOOL_RX_COPYBREAK: 2447 case ETHTOOL_TX_COPYBREAK: 2448 case ETHTOOL_TX_COPYBREAK_BUF_SIZE: 2449 if (tuna->len != sizeof(u32) || 2450 tuna->type_id != ETHTOOL_TUNABLE_U32) 2451 return -EINVAL; 2452 break; 2453 case ETHTOOL_PFC_PREVENTION_TOUT: 2454 if (tuna->len != sizeof(u16) || 2455 tuna->type_id != ETHTOOL_TUNABLE_U16) 2456 return -EINVAL; 2457 break; 2458 default: 2459 return -EINVAL; 2460 } 2461 2462 return 0; 2463} 2464 2465static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) 2466{ 2467 int ret; 2468 struct ethtool_tunable tuna; 2469 const struct ethtool_ops *ops = dev->ethtool_ops; 2470 void *data; 2471 2472 if (!ops->get_tunable) 2473 return -EOPNOTSUPP; 2474 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2475 return -EFAULT; 2476 ret = ethtool_tunable_valid(&tuna); 2477 if (ret) 2478 return ret; 2479 data = kzalloc(tuna.len, GFP_USER); 2480 if (!data) 2481 return -ENOMEM; 2482 ret = ops->get_tunable(dev, &tuna, data); 2483 if (ret) 2484 goto out; 2485 useraddr += sizeof(tuna); 2486 ret = -EFAULT; 2487 if (copy_to_user(useraddr, data, tuna.len)) 2488 goto out; 2489 ret = 0; 2490 2491out: 2492 kfree(data); 2493 return ret; 2494} 2495 2496static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) 2497{ 2498 int ret; 2499 struct ethtool_tunable tuna; 2500 const struct ethtool_ops *ops = dev->ethtool_ops; 2501 void *data; 2502 2503 if (!ops->set_tunable) 2504 return -EOPNOTSUPP; 2505 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2506 return -EFAULT; 2507 ret = ethtool_tunable_valid(&tuna); 2508 if (ret) 2509 return ret; 2510 useraddr += sizeof(tuna); 2511 data = memdup_user(useraddr, tuna.len); 2512 if (IS_ERR(data)) 2513 return PTR_ERR(data); 2514 ret = ops->set_tunable(dev, &tuna, data); 2515 2516 kfree(data); 2517 return ret; 2518} 2519 2520static noinline_for_stack int 2521ethtool_get_per_queue_coalesce(struct net_device *dev, 2522 void __user *useraddr, 2523 struct ethtool_per_queue_op *per_queue_opt) 2524{ 2525 u32 bit; 2526 int ret; 2527 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2528 2529 if (!dev->ethtool_ops->get_per_queue_coalesce) 2530 return -EOPNOTSUPP; 2531 2532 useraddr += sizeof(*per_queue_opt); 2533 2534 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, 2535 MAX_NUM_QUEUE); 2536 2537 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2538 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2539 2540 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); 2541 if (ret != 0) 2542 return ret; 2543 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2544 return -EFAULT; 2545 useraddr += sizeof(coalesce); 2546 } 2547 2548 return 0; 2549} 2550 2551static noinline_for_stack int 2552ethtool_set_per_queue_coalesce(struct net_device *dev, 2553 void __user *useraddr, 2554 struct ethtool_per_queue_op *per_queue_opt) 2555{ 2556 u32 bit; 2557 int i, ret = 0; 2558 int n_queue; 2559 struct ethtool_coalesce *backup = NULL, *tmp = NULL; 2560 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2561 2562 if ((!dev->ethtool_ops->set_per_queue_coalesce) || 2563 (!dev->ethtool_ops->get_per_queue_coalesce)) 2564 return -EOPNOTSUPP; 2565 2566 useraddr += sizeof(*per_queue_opt); 2567 2568 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); 2569 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); 2570 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); 2571 if (!backup) 2572 return -ENOMEM; 2573 2574 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2575 struct ethtool_coalesce coalesce; 2576 2577 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); 2578 if (ret != 0) 2579 goto roll_back; 2580 2581 tmp++; 2582 2583 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { 2584 ret = -EFAULT; 2585 goto roll_back; 2586 } 2587 2588 if (!ethtool_set_coalesce_supported(dev, &coalesce)) { 2589 ret = -EOPNOTSUPP; 2590 goto roll_back; 2591 } 2592 2593 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); 2594 if (ret != 0) 2595 goto roll_back; 2596 2597 useraddr += sizeof(coalesce); 2598 } 2599 2600roll_back: 2601 if (ret != 0) { 2602 tmp = backup; 2603 for_each_set_bit(i, queue_mask, bit) { 2604 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); 2605 tmp++; 2606 } 2607 } 2608 kfree(backup); 2609 2610 return ret; 2611} 2612 2613static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, 2614 void __user *useraddr, u32 sub_cmd) 2615{ 2616 struct ethtool_per_queue_op per_queue_opt; 2617 2618 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) 2619 return -EFAULT; 2620 2621 if (per_queue_opt.sub_command != sub_cmd) 2622 return -EINVAL; 2623 2624 switch (per_queue_opt.sub_command) { 2625 case ETHTOOL_GCOALESCE: 2626 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2627 case ETHTOOL_SCOALESCE: 2628 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2629 default: 2630 return -EOPNOTSUPP; 2631 } 2632} 2633 2634static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) 2635{ 2636 switch (tuna->id) { 2637 case ETHTOOL_PHY_DOWNSHIFT: 2638 case ETHTOOL_PHY_FAST_LINK_DOWN: 2639 if (tuna->len != sizeof(u8) || 2640 tuna->type_id != ETHTOOL_TUNABLE_U8) 2641 return -EINVAL; 2642 break; 2643 case ETHTOOL_PHY_EDPD: 2644 if (tuna->len != sizeof(u16) || 2645 tuna->type_id != ETHTOOL_TUNABLE_U16) 2646 return -EINVAL; 2647 break; 2648 default: 2649 return -EINVAL; 2650 } 2651 2652 return 0; 2653} 2654 2655static int get_phy_tunable(struct net_device *dev, void __user *useraddr) 2656{ 2657 struct phy_device *phydev = dev->phydev; 2658 struct ethtool_tunable tuna; 2659 bool phy_drv_tunable; 2660 void *data; 2661 int ret; 2662 2663 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 2664 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) 2665 return -EOPNOTSUPP; 2666 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2667 return -EFAULT; 2668 ret = ethtool_phy_tunable_valid(&tuna); 2669 if (ret) 2670 return ret; 2671 data = kzalloc(tuna.len, GFP_USER); 2672 if (!data) 2673 return -ENOMEM; 2674 if (phy_drv_tunable) { 2675 mutex_lock(&phydev->lock); 2676 ret = phydev->drv->get_tunable(phydev, &tuna, data); 2677 mutex_unlock(&phydev->lock); 2678 } else { 2679 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); 2680 } 2681 if (ret) 2682 goto out; 2683 useraddr += sizeof(tuna); 2684 ret = -EFAULT; 2685 if (copy_to_user(useraddr, data, tuna.len)) 2686 goto out; 2687 ret = 0; 2688 2689out: 2690 kfree(data); 2691 return ret; 2692} 2693 2694static int set_phy_tunable(struct net_device *dev, void __user *useraddr) 2695{ 2696 struct phy_device *phydev = dev->phydev; 2697 struct ethtool_tunable tuna; 2698 bool phy_drv_tunable; 2699 void *data; 2700 int ret; 2701 2702 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 2703 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) 2704 return -EOPNOTSUPP; 2705 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2706 return -EFAULT; 2707 ret = ethtool_phy_tunable_valid(&tuna); 2708 if (ret) 2709 return ret; 2710 useraddr += sizeof(tuna); 2711 data = memdup_user(useraddr, tuna.len); 2712 if (IS_ERR(data)) 2713 return PTR_ERR(data); 2714 if (phy_drv_tunable) { 2715 mutex_lock(&phydev->lock); 2716 ret = phydev->drv->set_tunable(phydev, &tuna, data); 2717 mutex_unlock(&phydev->lock); 2718 } else { 2719 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); 2720 } 2721 2722 kfree(data); 2723 return ret; 2724} 2725 2726static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) 2727{ 2728 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; 2729 int rc; 2730 2731 if (!dev->ethtool_ops->get_fecparam) 2732 return -EOPNOTSUPP; 2733 2734 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); 2735 if (rc) 2736 return rc; 2737 2738 if (WARN_ON_ONCE(fecparam.reserved)) 2739 fecparam.reserved = 0; 2740 2741 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) 2742 return -EFAULT; 2743 return 0; 2744} 2745 2746static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) 2747{ 2748 struct ethtool_fecparam fecparam; 2749 2750 if (!dev->ethtool_ops->set_fecparam) 2751 return -EOPNOTSUPP; 2752 2753 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) 2754 return -EFAULT; 2755 2756 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) 2757 return -EINVAL; 2758 2759 fecparam.active_fec = 0; 2760 fecparam.reserved = 0; 2761 2762 return dev->ethtool_ops->set_fecparam(dev, &fecparam); 2763} 2764 2765/* The main entry point in this file. Called from net/core/dev_ioctl.c */ 2766 2767static int 2768__dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, 2769 u32 ethcmd, struct ethtool_devlink_compat *devlink_state) 2770{ 2771 struct net_device *dev; 2772 u32 sub_cmd; 2773 int rc; 2774 netdev_features_t old_features; 2775 2776 dev = __dev_get_by_name(net, ifr->ifr_name); 2777 if (!dev) 2778 return -ENODEV; 2779 2780 if (ethcmd == ETHTOOL_PERQUEUE) { 2781 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) 2782 return -EFAULT; 2783 } else { 2784 sub_cmd = ethcmd; 2785 } 2786 /* Allow some commands to be done by anyone */ 2787 switch (sub_cmd) { 2788 case ETHTOOL_GSET: 2789 case ETHTOOL_GDRVINFO: 2790 case ETHTOOL_GMSGLVL: 2791 case ETHTOOL_GLINK: 2792 case ETHTOOL_GCOALESCE: 2793 case ETHTOOL_GRINGPARAM: 2794 case ETHTOOL_GPAUSEPARAM: 2795 case ETHTOOL_GRXCSUM: 2796 case ETHTOOL_GTXCSUM: 2797 case ETHTOOL_GSG: 2798 case ETHTOOL_GSSET_INFO: 2799 case ETHTOOL_GSTRINGS: 2800 case ETHTOOL_GSTATS: 2801 case ETHTOOL_GPHYSTATS: 2802 case ETHTOOL_GTSO: 2803 case ETHTOOL_GPERMADDR: 2804 case ETHTOOL_GUFO: 2805 case ETHTOOL_GGSO: 2806 case ETHTOOL_GGRO: 2807 case ETHTOOL_GFLAGS: 2808 case ETHTOOL_GPFLAGS: 2809 case ETHTOOL_GRXFH: 2810 case ETHTOOL_GRXRINGS: 2811 case ETHTOOL_GRXCLSRLCNT: 2812 case ETHTOOL_GRXCLSRULE: 2813 case ETHTOOL_GRXCLSRLALL: 2814 case ETHTOOL_GRXFHINDIR: 2815 case ETHTOOL_GRSSH: 2816 case ETHTOOL_GFEATURES: 2817 case ETHTOOL_GCHANNELS: 2818 case ETHTOOL_GET_TS_INFO: 2819 case ETHTOOL_GEEE: 2820 case ETHTOOL_GTUNABLE: 2821 case ETHTOOL_PHY_GTUNABLE: 2822 case ETHTOOL_GLINKSETTINGS: 2823 case ETHTOOL_GFECPARAM: 2824 break; 2825 default: 2826 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 2827 return -EPERM; 2828 } 2829 2830 if (dev->dev.parent) 2831 pm_runtime_get_sync(dev->dev.parent); 2832 2833 if (!netif_device_present(dev)) { 2834 rc = -ENODEV; 2835 goto out; 2836 } 2837 2838 if (dev->ethtool_ops->begin) { 2839 rc = dev->ethtool_ops->begin(dev); 2840 if (rc < 0) 2841 goto out; 2842 } 2843 old_features = dev->features; 2844 2845 switch (ethcmd) { 2846 case ETHTOOL_GSET: 2847 rc = ethtool_get_settings(dev, useraddr); 2848 break; 2849 case ETHTOOL_SSET: 2850 rc = ethtool_set_settings(dev, useraddr); 2851 break; 2852 case ETHTOOL_GDRVINFO: 2853 rc = ethtool_get_drvinfo(dev, devlink_state); 2854 break; 2855 case ETHTOOL_GREGS: 2856 rc = ethtool_get_regs(dev, useraddr); 2857 break; 2858 case ETHTOOL_GWOL: 2859 rc = ethtool_get_wol(dev, useraddr); 2860 break; 2861 case ETHTOOL_SWOL: 2862 rc = ethtool_set_wol(dev, useraddr); 2863 break; 2864 case ETHTOOL_GMSGLVL: 2865 rc = ethtool_get_value(dev, useraddr, ethcmd, 2866 dev->ethtool_ops->get_msglevel); 2867 break; 2868 case ETHTOOL_SMSGLVL: 2869 rc = ethtool_set_value_void(dev, useraddr, 2870 dev->ethtool_ops->set_msglevel); 2871 if (!rc) 2872 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL); 2873 break; 2874 case ETHTOOL_GEEE: 2875 rc = ethtool_get_eee(dev, useraddr); 2876 break; 2877 case ETHTOOL_SEEE: 2878 rc = ethtool_set_eee(dev, useraddr); 2879 break; 2880 case ETHTOOL_NWAY_RST: 2881 rc = ethtool_nway_reset(dev); 2882 break; 2883 case ETHTOOL_GLINK: 2884 rc = ethtool_get_link(dev, useraddr); 2885 break; 2886 case ETHTOOL_GEEPROM: 2887 rc = ethtool_get_eeprom(dev, useraddr); 2888 break; 2889 case ETHTOOL_SEEPROM: 2890 rc = ethtool_set_eeprom(dev, useraddr); 2891 break; 2892 case ETHTOOL_GCOALESCE: 2893 rc = ethtool_get_coalesce(dev, useraddr); 2894 break; 2895 case ETHTOOL_SCOALESCE: 2896 rc = ethtool_set_coalesce(dev, useraddr); 2897 break; 2898 case ETHTOOL_GRINGPARAM: 2899 rc = ethtool_get_ringparam(dev, useraddr); 2900 break; 2901 case ETHTOOL_SRINGPARAM: 2902 rc = ethtool_set_ringparam(dev, useraddr); 2903 break; 2904 case ETHTOOL_GPAUSEPARAM: 2905 rc = ethtool_get_pauseparam(dev, useraddr); 2906 break; 2907 case ETHTOOL_SPAUSEPARAM: 2908 rc = ethtool_set_pauseparam(dev, useraddr); 2909 break; 2910 case ETHTOOL_TEST: 2911 rc = ethtool_self_test(dev, useraddr); 2912 break; 2913 case ETHTOOL_GSTRINGS: 2914 rc = ethtool_get_strings(dev, useraddr); 2915 break; 2916 case ETHTOOL_PHYS_ID: 2917 rc = ethtool_phys_id(dev, useraddr); 2918 break; 2919 case ETHTOOL_GSTATS: 2920 rc = ethtool_get_stats(dev, useraddr); 2921 break; 2922 case ETHTOOL_GPERMADDR: 2923 rc = ethtool_get_perm_addr(dev, useraddr); 2924 break; 2925 case ETHTOOL_GFLAGS: 2926 rc = ethtool_get_value(dev, useraddr, ethcmd, 2927 __ethtool_get_flags); 2928 break; 2929 case ETHTOOL_SFLAGS: 2930 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); 2931 break; 2932 case ETHTOOL_GPFLAGS: 2933 rc = ethtool_get_value(dev, useraddr, ethcmd, 2934 dev->ethtool_ops->get_priv_flags); 2935 if (!rc) 2936 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL); 2937 break; 2938 case ETHTOOL_SPFLAGS: 2939 rc = ethtool_set_value(dev, useraddr, 2940 dev->ethtool_ops->set_priv_flags); 2941 break; 2942 case ETHTOOL_GRXFH: 2943 case ETHTOOL_GRXRINGS: 2944 case ETHTOOL_GRXCLSRLCNT: 2945 case ETHTOOL_GRXCLSRULE: 2946 case ETHTOOL_GRXCLSRLALL: 2947 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); 2948 break; 2949 case ETHTOOL_SRXFH: 2950 case ETHTOOL_SRXCLSRLDEL: 2951 case ETHTOOL_SRXCLSRLINS: 2952 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); 2953 break; 2954 case ETHTOOL_FLASHDEV: 2955 rc = ethtool_flash_device(dev, devlink_state); 2956 break; 2957 case ETHTOOL_RESET: 2958 rc = ethtool_reset(dev, useraddr); 2959 break; 2960 case ETHTOOL_GSSET_INFO: 2961 rc = ethtool_get_sset_info(dev, useraddr); 2962 break; 2963 case ETHTOOL_GRXFHINDIR: 2964 rc = ethtool_get_rxfh_indir(dev, useraddr); 2965 break; 2966 case ETHTOOL_SRXFHINDIR: 2967 rc = ethtool_set_rxfh_indir(dev, useraddr); 2968 break; 2969 case ETHTOOL_GRSSH: 2970 rc = ethtool_get_rxfh(dev, useraddr); 2971 break; 2972 case ETHTOOL_SRSSH: 2973 rc = ethtool_set_rxfh(dev, useraddr); 2974 break; 2975 case ETHTOOL_GFEATURES: 2976 rc = ethtool_get_features(dev, useraddr); 2977 break; 2978 case ETHTOOL_SFEATURES: 2979 rc = ethtool_set_features(dev, useraddr); 2980 break; 2981 case ETHTOOL_GTXCSUM: 2982 case ETHTOOL_GRXCSUM: 2983 case ETHTOOL_GSG: 2984 case ETHTOOL_GTSO: 2985 case ETHTOOL_GGSO: 2986 case ETHTOOL_GGRO: 2987 rc = ethtool_get_one_feature(dev, useraddr, ethcmd); 2988 break; 2989 case ETHTOOL_STXCSUM: 2990 case ETHTOOL_SRXCSUM: 2991 case ETHTOOL_SSG: 2992 case ETHTOOL_STSO: 2993 case ETHTOOL_SGSO: 2994 case ETHTOOL_SGRO: 2995 rc = ethtool_set_one_feature(dev, useraddr, ethcmd); 2996 break; 2997 case ETHTOOL_GCHANNELS: 2998 rc = ethtool_get_channels(dev, useraddr); 2999 break; 3000 case ETHTOOL_SCHANNELS: 3001 rc = ethtool_set_channels(dev, useraddr); 3002 break; 3003 case ETHTOOL_SET_DUMP: 3004 rc = ethtool_set_dump(dev, useraddr); 3005 break; 3006 case ETHTOOL_GET_DUMP_FLAG: 3007 rc = ethtool_get_dump_flag(dev, useraddr); 3008 break; 3009 case ETHTOOL_GET_DUMP_DATA: 3010 rc = ethtool_get_dump_data(dev, useraddr); 3011 break; 3012 case ETHTOOL_GET_TS_INFO: 3013 rc = ethtool_get_ts_info(dev, useraddr); 3014 break; 3015 case ETHTOOL_GMODULEINFO: 3016 rc = ethtool_get_module_info(dev, useraddr); 3017 break; 3018 case ETHTOOL_GMODULEEEPROM: 3019 rc = ethtool_get_module_eeprom(dev, useraddr); 3020 break; 3021 case ETHTOOL_GTUNABLE: 3022 rc = ethtool_get_tunable(dev, useraddr); 3023 break; 3024 case ETHTOOL_STUNABLE: 3025 rc = ethtool_set_tunable(dev, useraddr); 3026 break; 3027 case ETHTOOL_GPHYSTATS: 3028 rc = ethtool_get_phy_stats(dev, useraddr); 3029 break; 3030 case ETHTOOL_PERQUEUE: 3031 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); 3032 break; 3033 case ETHTOOL_GLINKSETTINGS: 3034 rc = ethtool_get_link_ksettings(dev, useraddr); 3035 break; 3036 case ETHTOOL_SLINKSETTINGS: 3037 rc = ethtool_set_link_ksettings(dev, useraddr); 3038 break; 3039 case ETHTOOL_PHY_GTUNABLE: 3040 rc = get_phy_tunable(dev, useraddr); 3041 break; 3042 case ETHTOOL_PHY_STUNABLE: 3043 rc = set_phy_tunable(dev, useraddr); 3044 break; 3045 case ETHTOOL_GFECPARAM: 3046 rc = ethtool_get_fecparam(dev, useraddr); 3047 break; 3048 case ETHTOOL_SFECPARAM: 3049 rc = ethtool_set_fecparam(dev, useraddr); 3050 break; 3051 default: 3052 rc = -EOPNOTSUPP; 3053 } 3054 3055 if (dev->ethtool_ops->complete) 3056 dev->ethtool_ops->complete(dev); 3057 3058 if (old_features != dev->features) 3059 netdev_features_change(dev); 3060out: 3061 if (dev->dev.parent) 3062 pm_runtime_put(dev->dev.parent); 3063 3064 return rc; 3065} 3066 3067int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) 3068{ 3069 struct ethtool_devlink_compat *state; 3070 u32 ethcmd; 3071 int rc; 3072 3073 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) 3074 return -EFAULT; 3075 3076 state = kzalloc(sizeof(*state), GFP_KERNEL); 3077 if (!state) 3078 return -ENOMEM; 3079 3080 switch (ethcmd) { 3081 case ETHTOOL_FLASHDEV: 3082 if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { 3083 rc = -EFAULT; 3084 goto exit_free; 3085 } 3086 state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; 3087 break; 3088 } 3089 3090 rtnl_lock(); 3091 rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); 3092 rtnl_unlock(); 3093 if (rc) 3094 goto exit_free; 3095 3096 switch (ethcmd) { 3097 case ETHTOOL_FLASHDEV: 3098 if (state->devlink) 3099 rc = devlink_compat_flash_update(state->devlink, 3100 state->efl.data); 3101 break; 3102 case ETHTOOL_GDRVINFO: 3103 if (state->devlink) 3104 devlink_compat_running_version(state->devlink, 3105 state->info.fw_version, 3106 sizeof(state->info.fw_version)); 3107 if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { 3108 rc = -EFAULT; 3109 goto exit_free; 3110 } 3111 break; 3112 } 3113 3114exit_free: 3115 if (state->devlink) 3116 devlink_put(state->devlink); 3117 kfree(state); 3118 return rc; 3119} 3120 3121struct ethtool_rx_flow_key { 3122 struct flow_dissector_key_basic basic; 3123 union { 3124 struct flow_dissector_key_ipv4_addrs ipv4; 3125 struct flow_dissector_key_ipv6_addrs ipv6; 3126 }; 3127 struct flow_dissector_key_ports tp; 3128 struct flow_dissector_key_ip ip; 3129 struct flow_dissector_key_vlan vlan; 3130 struct flow_dissector_key_eth_addrs eth_addrs; 3131} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ 3132 3133struct ethtool_rx_flow_match { 3134 struct flow_dissector dissector; 3135 struct ethtool_rx_flow_key key; 3136 struct ethtool_rx_flow_key mask; 3137}; 3138 3139struct ethtool_rx_flow_rule * 3140ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) 3141{ 3142 const struct ethtool_rx_flow_spec *fs = input->fs; 3143 struct ethtool_rx_flow_match *match; 3144 struct ethtool_rx_flow_rule *flow; 3145 struct flow_action_entry *act; 3146 3147 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + 3148 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); 3149 if (!flow) 3150 return ERR_PTR(-ENOMEM); 3151 3152 /* ethtool_rx supports only one single action per rule. */ 3153 flow->rule = flow_rule_alloc(1); 3154 if (!flow->rule) { 3155 kfree(flow); 3156 return ERR_PTR(-ENOMEM); 3157 } 3158 3159 match = (struct ethtool_rx_flow_match *)flow->priv; 3160 flow->rule->match.dissector = &match->dissector; 3161 flow->rule->match.mask = &match->mask; 3162 flow->rule->match.key = &match->key; 3163 3164 match->mask.basic.n_proto = htons(0xffff); 3165 3166 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3167 case ETHER_FLOW: { 3168 const struct ethhdr *ether_spec, *ether_m_spec; 3169 3170 ether_spec = &fs->h_u.ether_spec; 3171 ether_m_spec = &fs->m_u.ether_spec; 3172 3173 if (!is_zero_ether_addr(ether_m_spec->h_source)) { 3174 ether_addr_copy(match->key.eth_addrs.src, 3175 ether_spec->h_source); 3176 ether_addr_copy(match->mask.eth_addrs.src, 3177 ether_m_spec->h_source); 3178 } 3179 if (!is_zero_ether_addr(ether_m_spec->h_dest)) { 3180 ether_addr_copy(match->key.eth_addrs.dst, 3181 ether_spec->h_dest); 3182 ether_addr_copy(match->mask.eth_addrs.dst, 3183 ether_m_spec->h_dest); 3184 } 3185 if (ether_m_spec->h_proto) { 3186 match->key.basic.n_proto = ether_spec->h_proto; 3187 match->mask.basic.n_proto = ether_m_spec->h_proto; 3188 } 3189 } 3190 break; 3191 case TCP_V4_FLOW: 3192 case UDP_V4_FLOW: { 3193 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; 3194 3195 match->key.basic.n_proto = htons(ETH_P_IP); 3196 3197 v4_spec = &fs->h_u.tcp_ip4_spec; 3198 v4_m_spec = &fs->m_u.tcp_ip4_spec; 3199 3200 if (v4_m_spec->ip4src) { 3201 match->key.ipv4.src = v4_spec->ip4src; 3202 match->mask.ipv4.src = v4_m_spec->ip4src; 3203 } 3204 if (v4_m_spec->ip4dst) { 3205 match->key.ipv4.dst = v4_spec->ip4dst; 3206 match->mask.ipv4.dst = v4_m_spec->ip4dst; 3207 } 3208 if (v4_m_spec->ip4src || 3209 v4_m_spec->ip4dst) { 3210 match->dissector.used_keys |= 3211 BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS); 3212 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = 3213 offsetof(struct ethtool_rx_flow_key, ipv4); 3214 } 3215 if (v4_m_spec->psrc) { 3216 match->key.tp.src = v4_spec->psrc; 3217 match->mask.tp.src = v4_m_spec->psrc; 3218 } 3219 if (v4_m_spec->pdst) { 3220 match->key.tp.dst = v4_spec->pdst; 3221 match->mask.tp.dst = v4_m_spec->pdst; 3222 } 3223 if (v4_m_spec->psrc || 3224 v4_m_spec->pdst) { 3225 match->dissector.used_keys |= 3226 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3227 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3228 offsetof(struct ethtool_rx_flow_key, tp); 3229 } 3230 if (v4_m_spec->tos) { 3231 match->key.ip.tos = v4_spec->tos; 3232 match->mask.ip.tos = v4_m_spec->tos; 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 case TCP_V6_FLOW: 3241 case UDP_V6_FLOW: { 3242 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; 3243 3244 match->key.basic.n_proto = htons(ETH_P_IPV6); 3245 3246 v6_spec = &fs->h_u.tcp_ip6_spec; 3247 v6_m_spec = &fs->m_u.tcp_ip6_spec; 3248 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) { 3249 memcpy(&match->key.ipv6.src, v6_spec->ip6src, 3250 sizeof(match->key.ipv6.src)); 3251 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, 3252 sizeof(match->mask.ipv6.src)); 3253 } 3254 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3255 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, 3256 sizeof(match->key.ipv6.dst)); 3257 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, 3258 sizeof(match->mask.ipv6.dst)); 3259 } 3260 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) || 3261 !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3262 match->dissector.used_keys |= 3263 BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS); 3264 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = 3265 offsetof(struct ethtool_rx_flow_key, ipv6); 3266 } 3267 if (v6_m_spec->psrc) { 3268 match->key.tp.src = v6_spec->psrc; 3269 match->mask.tp.src = v6_m_spec->psrc; 3270 } 3271 if (v6_m_spec->pdst) { 3272 match->key.tp.dst = v6_spec->pdst; 3273 match->mask.tp.dst = v6_m_spec->pdst; 3274 } 3275 if (v6_m_spec->psrc || 3276 v6_m_spec->pdst) { 3277 match->dissector.used_keys |= 3278 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); 3279 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3280 offsetof(struct ethtool_rx_flow_key, tp); 3281 } 3282 if (v6_m_spec->tclass) { 3283 match->key.ip.tos = v6_spec->tclass; 3284 match->mask.ip.tos = v6_m_spec->tclass; 3285 match->dissector.used_keys |= 3286 BIT_ULL(FLOW_DISSECTOR_KEY_IP); 3287 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3288 offsetof(struct ethtool_rx_flow_key, ip); 3289 } 3290 } 3291 break; 3292 default: 3293 ethtool_rx_flow_rule_destroy(flow); 3294 return ERR_PTR(-EINVAL); 3295 } 3296 3297 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3298 case TCP_V4_FLOW: 3299 case TCP_V6_FLOW: 3300 match->key.basic.ip_proto = IPPROTO_TCP; 3301 match->mask.basic.ip_proto = 0xff; 3302 break; 3303 case UDP_V4_FLOW: 3304 case UDP_V6_FLOW: 3305 match->key.basic.ip_proto = IPPROTO_UDP; 3306 match->mask.basic.ip_proto = 0xff; 3307 break; 3308 } 3309 3310 match->dissector.used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_BASIC); 3311 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = 3312 offsetof(struct ethtool_rx_flow_key, basic); 3313 3314 if (fs->flow_type & FLOW_EXT) { 3315 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3316 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3317 3318 if (ext_m_spec->vlan_etype) { 3319 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; 3320 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; 3321 } 3322 3323 if (ext_m_spec->vlan_tci) { 3324 match->key.vlan.vlan_id = 3325 ntohs(ext_h_spec->vlan_tci) & 0x0fff; 3326 match->mask.vlan.vlan_id = 3327 ntohs(ext_m_spec->vlan_tci) & 0x0fff; 3328 3329 match->key.vlan.vlan_dei = 3330 !!(ext_h_spec->vlan_tci & htons(0x1000)); 3331 match->mask.vlan.vlan_dei = 3332 !!(ext_m_spec->vlan_tci & htons(0x1000)); 3333 3334 match->key.vlan.vlan_priority = 3335 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; 3336 match->mask.vlan.vlan_priority = 3337 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; 3338 } 3339 3340 if (ext_m_spec->vlan_etype || 3341 ext_m_spec->vlan_tci) { 3342 match->dissector.used_keys |= 3343 BIT_ULL(FLOW_DISSECTOR_KEY_VLAN); 3344 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = 3345 offsetof(struct ethtool_rx_flow_key, vlan); 3346 } 3347 } 3348 if (fs->flow_type & FLOW_MAC_EXT) { 3349 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3350 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3351 3352 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, 3353 ETH_ALEN); 3354 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, 3355 ETH_ALEN); 3356 3357 match->dissector.used_keys |= 3358 BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS); 3359 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = 3360 offsetof(struct ethtool_rx_flow_key, eth_addrs); 3361 } 3362 3363 act = &flow->rule->action.entries[0]; 3364 switch (fs->ring_cookie) { 3365 case RX_CLS_FLOW_DISC: 3366 act->id = FLOW_ACTION_DROP; 3367 break; 3368 case RX_CLS_FLOW_WAKE: 3369 act->id = FLOW_ACTION_WAKE; 3370 break; 3371 default: 3372 act->id = FLOW_ACTION_QUEUE; 3373 if (fs->flow_type & FLOW_RSS) 3374 act->queue.ctx = input->rss_ctx; 3375 3376 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); 3377 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); 3378 break; 3379 } 3380 3381 return flow; 3382} 3383EXPORT_SYMBOL(ethtool_rx_flow_rule_create); 3384 3385void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) 3386{ 3387 kfree(flow->rule); 3388 kfree(flow); 3389} 3390EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); 3391