1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * net/core/ethtool.c - Ethtool ioctl handler 4 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx> 5 * 6 * This file is where we call all the ethtool_ops commands to get 7 * the information ethtool needs. 8 */ 9 10 #include <linux/compat.h> 11 #include <linux/etherdevice.h> 12 #include <linux/module.h> 13 #include <linux/types.h> 14 #include <linux/capability.h> 15 #include <linux/errno.h> 16 #include <linux/ethtool.h> 17 #include <linux/netdevice.h> 18 #include <linux/net_tstamp.h> 19 #include <linux/phy.h> 20 #include <linux/bitops.h> 21 #include <linux/uaccess.h> 22 #include <linux/vmalloc.h> 23 #include <linux/sfp.h> 24 #include <linux/slab.h> 25 #include <linux/rtnetlink.h> 26 #include <linux/sched/signal.h> 27 #include <linux/net.h> 28 #include <linux/pm_runtime.h> 29 #include <net/devlink.h> 30 #include <net/ipv6.h> 31 #include <net/xdp_sock_drv.h> 32 #include <net/flow_offload.h> 33 #include <linux/ethtool_netlink.h> 34 #include <generated/utsrelease.h> 35 #include "common.h" 36 37 /* State held across locks and calls for commands which have devlink fallback */ 38 struct ethtool_devlink_compat { 39 struct devlink *devlink; 40 union { 41 struct ethtool_flash efl; 42 struct ethtool_drvinfo info; 43 }; 44 }; 45 46 static struct devlink *netdev_to_devlink_get(struct net_device *dev) 47 { 48 if (!dev->devlink_port) 49 return NULL; 50 return devlink_try_get(dev->devlink_port->devlink); 51 } 52 53 /* 54 * Some useful ethtool_ops methods that're device independent. 55 * If we find that all drivers want to do the same thing here, 56 * we can turn these into dev_() function calls. 57 */ 58 59 u32 ethtool_op_get_link(struct net_device *dev) 60 { 61 return netif_carrier_ok(dev) ? 1 : 0; 62 } 63 EXPORT_SYMBOL(ethtool_op_get_link); 64 65 int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info) 66 { 67 info->so_timestamping = 68 SOF_TIMESTAMPING_TX_SOFTWARE | 69 SOF_TIMESTAMPING_RX_SOFTWARE | 70 SOF_TIMESTAMPING_SOFTWARE; 71 info->phc_index = -1; 72 return 0; 73 } 74 EXPORT_SYMBOL(ethtool_op_get_ts_info); 75 76 /* Handlers for each ethtool command */ 77 78 static int ethtool_get_features(struct net_device *dev, void __user *useraddr) 79 { 80 struct ethtool_gfeatures cmd = { 81 .cmd = ETHTOOL_GFEATURES, 82 .size = ETHTOOL_DEV_FEATURE_WORDS, 83 }; 84 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 85 u32 __user *sizeaddr; 86 u32 copy_size; 87 int i; 88 89 /* in case feature bits run out again */ 90 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); 91 92 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 93 features[i].available = (u32)(dev->hw_features >> (32 * i)); 94 features[i].requested = (u32)(dev->wanted_features >> (32 * i)); 95 features[i].active = (u32)(dev->features >> (32 * i)); 96 features[i].never_changed = 97 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); 98 } 99 100 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); 101 if (get_user(copy_size, sizeaddr)) 102 return -EFAULT; 103 104 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) 105 copy_size = ETHTOOL_DEV_FEATURE_WORDS; 106 107 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 108 return -EFAULT; 109 useraddr += sizeof(cmd); 110 if (copy_to_user(useraddr, features, 111 array_size(copy_size, sizeof(*features)))) 112 return -EFAULT; 113 114 return 0; 115 } 116 117 static int ethtool_set_features(struct net_device *dev, void __user *useraddr) 118 { 119 struct ethtool_sfeatures cmd; 120 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 121 netdev_features_t wanted = 0, valid = 0; 122 int i, ret = 0; 123 124 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 125 return -EFAULT; 126 useraddr += sizeof(cmd); 127 128 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) 129 return -EINVAL; 130 131 if (copy_from_user(features, useraddr, sizeof(features))) 132 return -EFAULT; 133 134 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 135 valid |= (netdev_features_t)features[i].valid << (32 * i); 136 wanted |= (netdev_features_t)features[i].requested << (32 * i); 137 } 138 139 if (valid & ~NETIF_F_ETHTOOL_BITS) 140 return -EINVAL; 141 142 if (valid & ~dev->hw_features) { 143 valid &= dev->hw_features; 144 ret |= ETHTOOL_F_UNSUPPORTED; 145 } 146 147 dev->wanted_features &= ~valid; 148 dev->wanted_features |= wanted & valid; 149 __netdev_update_features(dev); 150 151 if ((dev->wanted_features ^ dev->features) & valid) 152 ret |= ETHTOOL_F_WISH; 153 154 return ret; 155 } 156 157 static int __ethtool_get_sset_count(struct net_device *dev, int sset) 158 { 159 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 160 const struct ethtool_ops *ops = dev->ethtool_ops; 161 162 if (sset == ETH_SS_FEATURES) 163 return ARRAY_SIZE(netdev_features_strings); 164 165 if (sset == ETH_SS_RSS_HASH_FUNCS) 166 return ARRAY_SIZE(rss_hash_func_strings); 167 168 if (sset == ETH_SS_TUNABLES) 169 return ARRAY_SIZE(tunable_strings); 170 171 if (sset == ETH_SS_PHY_TUNABLES) 172 return ARRAY_SIZE(phy_tunable_strings); 173 174 if (sset == ETH_SS_PHY_STATS && dev->phydev && 175 !ops->get_ethtool_phy_stats && 176 phy_ops && phy_ops->get_sset_count) 177 return phy_ops->get_sset_count(dev->phydev); 178 179 if (sset == ETH_SS_LINK_MODES) 180 return __ETHTOOL_LINK_MODE_MASK_NBITS; 181 182 if (ops->get_sset_count && ops->get_strings) 183 return ops->get_sset_count(dev, sset); 184 else 185 return -EOPNOTSUPP; 186 } 187 188 static void __ethtool_get_strings(struct net_device *dev, 189 u32 stringset, u8 *data) 190 { 191 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 192 const struct ethtool_ops *ops = dev->ethtool_ops; 193 194 if (stringset == ETH_SS_FEATURES) 195 memcpy(data, netdev_features_strings, 196 sizeof(netdev_features_strings)); 197 else if (stringset == ETH_SS_RSS_HASH_FUNCS) 198 memcpy(data, rss_hash_func_strings, 199 sizeof(rss_hash_func_strings)); 200 else if (stringset == ETH_SS_TUNABLES) 201 memcpy(data, tunable_strings, sizeof(tunable_strings)); 202 else if (stringset == ETH_SS_PHY_TUNABLES) 203 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); 204 else if (stringset == ETH_SS_PHY_STATS && dev->phydev && 205 !ops->get_ethtool_phy_stats && phy_ops && 206 phy_ops->get_strings) 207 phy_ops->get_strings(dev->phydev, data); 208 else if (stringset == ETH_SS_LINK_MODES) 209 memcpy(data, link_mode_names, 210 __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN); 211 else 212 /* ops->get_strings is valid because checked earlier */ 213 ops->get_strings(dev, stringset, data); 214 } 215 216 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) 217 { 218 /* feature masks of legacy discrete ethtool ops */ 219 220 switch (eth_cmd) { 221 case ETHTOOL_GTXCSUM: 222 case ETHTOOL_STXCSUM: 223 return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC | 224 NETIF_F_SCTP_CRC; 225 case ETHTOOL_GRXCSUM: 226 case ETHTOOL_SRXCSUM: 227 return NETIF_F_RXCSUM; 228 case ETHTOOL_GSG: 229 case ETHTOOL_SSG: 230 return NETIF_F_SG | NETIF_F_FRAGLIST; 231 case ETHTOOL_GTSO: 232 case ETHTOOL_STSO: 233 return NETIF_F_ALL_TSO; 234 case ETHTOOL_GGSO: 235 case ETHTOOL_SGSO: 236 return NETIF_F_GSO; 237 case ETHTOOL_GGRO: 238 case ETHTOOL_SGRO: 239 return NETIF_F_GRO; 240 default: 241 BUG(); 242 } 243 } 244 245 static int ethtool_get_one_feature(struct net_device *dev, 246 char __user *useraddr, u32 ethcmd) 247 { 248 netdev_features_t mask = ethtool_get_feature_mask(ethcmd); 249 struct ethtool_value edata = { 250 .cmd = ethcmd, 251 .data = !!(dev->features & mask), 252 }; 253 254 if (copy_to_user(useraddr, &edata, sizeof(edata))) 255 return -EFAULT; 256 return 0; 257 } 258 259 static int ethtool_set_one_feature(struct net_device *dev, 260 void __user *useraddr, u32 ethcmd) 261 { 262 struct ethtool_value edata; 263 netdev_features_t mask; 264 265 if (copy_from_user(&edata, useraddr, sizeof(edata))) 266 return -EFAULT; 267 268 mask = ethtool_get_feature_mask(ethcmd); 269 mask &= dev->hw_features; 270 if (!mask) 271 return -EOPNOTSUPP; 272 273 if (edata.data) 274 dev->wanted_features |= mask; 275 else 276 dev->wanted_features &= ~mask; 277 278 __netdev_update_features(dev); 279 280 return 0; 281 } 282 283 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ 284 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) 285 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ 286 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ 287 NETIF_F_RXHASH) 288 289 static u32 __ethtool_get_flags(struct net_device *dev) 290 { 291 u32 flags = 0; 292 293 if (dev->features & NETIF_F_LRO) 294 flags |= ETH_FLAG_LRO; 295 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 296 flags |= ETH_FLAG_RXVLAN; 297 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) 298 flags |= ETH_FLAG_TXVLAN; 299 if (dev->features & NETIF_F_NTUPLE) 300 flags |= ETH_FLAG_NTUPLE; 301 if (dev->features & NETIF_F_RXHASH) 302 flags |= ETH_FLAG_RXHASH; 303 304 return flags; 305 } 306 307 static int __ethtool_set_flags(struct net_device *dev, u32 data) 308 { 309 netdev_features_t features = 0, changed; 310 311 if (data & ~ETH_ALL_FLAGS) 312 return -EINVAL; 313 314 if (data & ETH_FLAG_LRO) 315 features |= NETIF_F_LRO; 316 if (data & ETH_FLAG_RXVLAN) 317 features |= NETIF_F_HW_VLAN_CTAG_RX; 318 if (data & ETH_FLAG_TXVLAN) 319 features |= NETIF_F_HW_VLAN_CTAG_TX; 320 if (data & ETH_FLAG_NTUPLE) 321 features |= NETIF_F_NTUPLE; 322 if (data & ETH_FLAG_RXHASH) 323 features |= NETIF_F_RXHASH; 324 325 /* allow changing only bits set in hw_features */ 326 changed = (features ^ dev->features) & ETH_ALL_FEATURES; 327 if (changed & ~dev->hw_features) 328 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; 329 330 dev->wanted_features = 331 (dev->wanted_features & ~changed) | (features & changed); 332 333 __netdev_update_features(dev); 334 335 return 0; 336 } 337 338 /* Given two link masks, AND them together and save the result in dst. */ 339 void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, 340 struct ethtool_link_ksettings *src) 341 { 342 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); 343 unsigned int idx = 0; 344 345 for (; idx < size; idx++) { 346 dst->link_modes.supported[idx] &= 347 src->link_modes.supported[idx]; 348 dst->link_modes.advertising[idx] &= 349 src->link_modes.advertising[idx]; 350 } 351 } 352 EXPORT_SYMBOL(ethtool_intersect_link_masks); 353 354 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, 355 u32 legacy_u32) 356 { 357 linkmode_zero(dst); 358 dst[0] = legacy_u32; 359 } 360 EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); 361 362 /* return false if src had higher bits set. lower bits always updated. */ 363 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, 364 const unsigned long *src) 365 { 366 *legacy_u32 = src[0]; 367 return find_next_bit(src, __ETHTOOL_LINK_MODE_MASK_NBITS, 32) == 368 __ETHTOOL_LINK_MODE_MASK_NBITS; 369 } 370 EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); 371 372 /* return false if ksettings link modes had higher bits 373 * set. legacy_settings always updated (best effort) 374 */ 375 static bool 376 convert_link_ksettings_to_legacy_settings( 377 struct ethtool_cmd *legacy_settings, 378 const struct ethtool_link_ksettings *link_ksettings) 379 { 380 bool retval = true; 381 382 memset(legacy_settings, 0, sizeof(*legacy_settings)); 383 /* this also clears the deprecated fields in legacy structure: 384 * __u8 transceiver; 385 * __u32 maxtxpkt; 386 * __u32 maxrxpkt; 387 */ 388 389 retval &= ethtool_convert_link_mode_to_legacy_u32( 390 &legacy_settings->supported, 391 link_ksettings->link_modes.supported); 392 retval &= ethtool_convert_link_mode_to_legacy_u32( 393 &legacy_settings->advertising, 394 link_ksettings->link_modes.advertising); 395 retval &= ethtool_convert_link_mode_to_legacy_u32( 396 &legacy_settings->lp_advertising, 397 link_ksettings->link_modes.lp_advertising); 398 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); 399 legacy_settings->duplex 400 = link_ksettings->base.duplex; 401 legacy_settings->port 402 = link_ksettings->base.port; 403 legacy_settings->phy_address 404 = link_ksettings->base.phy_address; 405 legacy_settings->autoneg 406 = link_ksettings->base.autoneg; 407 legacy_settings->mdio_support 408 = link_ksettings->base.mdio_support; 409 legacy_settings->eth_tp_mdix 410 = link_ksettings->base.eth_tp_mdix; 411 legacy_settings->eth_tp_mdix_ctrl 412 = link_ksettings->base.eth_tp_mdix_ctrl; 413 legacy_settings->transceiver 414 = link_ksettings->base.transceiver; 415 return retval; 416 } 417 418 /* number of 32-bit words to store the user's link mode bitmaps */ 419 #define __ETHTOOL_LINK_MODE_MASK_NU32 \ 420 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) 421 422 /* layout of the struct passed from/to userland */ 423 struct ethtool_link_usettings { 424 struct ethtool_link_settings base; 425 struct { 426 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; 427 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 428 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 429 } link_modes; 430 }; 431 432 /* Internal kernel helper to query a device ethtool_link_settings. */ 433 int __ethtool_get_link_ksettings(struct net_device *dev, 434 struct ethtool_link_ksettings *link_ksettings) 435 { 436 ASSERT_RTNL(); 437 438 if (!dev->ethtool_ops->get_link_ksettings) 439 return -EOPNOTSUPP; 440 441 memset(link_ksettings, 0, sizeof(*link_ksettings)); 442 return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings); 443 } 444 EXPORT_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 */ 449 static 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 */ 472 bool 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 */ 493 static int 494 store_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. */ 517 static 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. */ 574 static 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 } 617 618 int 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 } 637 EXPORT_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 */ 648 static 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 */ 681 static 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 } 705 706 static int 707 ethtool_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 } 766 767 static 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; 817 818 out: 819 kfree(info_buf); 820 return ret; 821 } 822 823 static noinline_for_stack int 824 ethtool_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 } 867 868 static 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 } 880 881 static 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 } 909 910 static int ethtool_rxnfc_copy_to_user(void __user *useraddr, 911 const struct ethtool_rxnfc *rxnfc, 912 size_t size, const u32 *rule_buf) 913 { 914 int ret; 915 916 if (compat_need_64bit_alignment_fixup()) { 917 ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size, 918 rule_buf); 919 useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs); 920 } else { 921 ret = copy_to_user(useraddr, rxnfc, size); 922 useraddr += offsetof(struct ethtool_rxnfc, rule_locs); 923 } 924 925 if (ret) 926 return -EFAULT; 927 928 if (rule_buf) { 929 if (copy_to_user(useraddr, rule_buf, 930 rxnfc->rule_cnt * sizeof(u32))) 931 return -EFAULT; 932 } 933 934 return 0; 935 } 936 937 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, 938 u32 cmd, void __user *useraddr) 939 { 940 struct ethtool_rxnfc info; 941 size_t info_size = sizeof(info); 942 int rc; 943 944 if (!dev->ethtool_ops->set_rxnfc) 945 return -EOPNOTSUPP; 946 947 /* struct ethtool_rxnfc was originally defined for 948 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 949 * members. User-space might still be using that 950 * definition. */ 951 if (cmd == ETHTOOL_SRXFH) 952 info_size = (offsetof(struct ethtool_rxnfc, data) + 953 sizeof(info.data)); 954 955 if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size)) 956 return -EFAULT; 957 958 rc = dev->ethtool_ops->set_rxnfc(dev, &info); 959 if (rc) 960 return rc; 961 962 if (cmd == ETHTOOL_SRXCLSRLINS && 963 ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL)) 964 return -EFAULT; 965 966 return 0; 967 } 968 969 static noinline_for_stack int ethtool_get_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 const struct ethtool_ops *ops = dev->ethtool_ops; 975 int ret; 976 void *rule_buf = NULL; 977 978 if (!ops->get_rxnfc) 979 return -EOPNOTSUPP; 980 981 /* struct ethtool_rxnfc was originally defined for 982 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 983 * members. User-space might still be using that 984 * definition. */ 985 if (cmd == ETHTOOL_GRXFH) 986 info_size = (offsetof(struct ethtool_rxnfc, data) + 987 sizeof(info.data)); 988 989 if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size)) 990 return -EFAULT; 991 992 /* If FLOW_RSS was requested then user-space must be using the 993 * new definition, as FLOW_RSS is newer. 994 */ 995 if (cmd == ETHTOOL_GRXFH && info.flow_type & FLOW_RSS) { 996 info_size = sizeof(info); 997 if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size)) 998 return -EFAULT; 999 /* Since malicious users may modify the original data, 1000 * we need to check whether FLOW_RSS is still requested. 1001 */ 1002 if (!(info.flow_type & FLOW_RSS)) 1003 return -EINVAL; 1004 } 1005 1006 if (info.cmd != cmd) 1007 return -EINVAL; 1008 1009 if (info.cmd == ETHTOOL_GRXCLSRLALL) { 1010 if (info.rule_cnt > 0) { 1011 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) 1012 rule_buf = kcalloc(info.rule_cnt, sizeof(u32), 1013 GFP_USER); 1014 if (!rule_buf) 1015 return -ENOMEM; 1016 } 1017 } 1018 1019 ret = ops->get_rxnfc(dev, &info, rule_buf); 1020 if (ret < 0) 1021 goto err_out; 1022 1023 ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf); 1024 err_out: 1025 kfree(rule_buf); 1026 1027 return ret; 1028 } 1029 1030 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, 1031 struct ethtool_rxnfc *rx_rings, 1032 u32 size) 1033 { 1034 int i; 1035 1036 if (copy_from_user(indir, useraddr, array_size(size, sizeof(indir[0])))) 1037 return -EFAULT; 1038 1039 /* Validate ring indices */ 1040 for (i = 0; i < size; i++) 1041 if (indir[i] >= rx_rings->data) 1042 return -EINVAL; 1043 1044 return 0; 1045 } 1046 1047 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; 1048 1049 void netdev_rss_key_fill(void *buffer, size_t len) 1050 { 1051 BUG_ON(len > sizeof(netdev_rss_key)); 1052 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); 1053 memcpy(buffer, netdev_rss_key, len); 1054 } 1055 EXPORT_SYMBOL(netdev_rss_key_fill); 1056 1057 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, 1058 void __user *useraddr) 1059 { 1060 u32 user_size, dev_size; 1061 u32 *indir; 1062 int ret; 1063 1064 if (!dev->ethtool_ops->get_rxfh_indir_size || 1065 !dev->ethtool_ops->get_rxfh) 1066 return -EOPNOTSUPP; 1067 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev); 1068 if (dev_size == 0) 1069 return -EOPNOTSUPP; 1070 1071 if (copy_from_user(&user_size, 1072 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1073 sizeof(user_size))) 1074 return -EFAULT; 1075 1076 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), 1077 &dev_size, sizeof(dev_size))) 1078 return -EFAULT; 1079 1080 /* If the user buffer size is 0, this is just a query for the 1081 * device table size. Otherwise, if it's smaller than the 1082 * device table size it's an error. 1083 */ 1084 if (user_size < dev_size) 1085 return user_size == 0 ? 0 : -EINVAL; 1086 1087 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); 1088 if (!indir) 1089 return -ENOMEM; 1090 1091 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL); 1092 if (ret) 1093 goto out; 1094 1095 if (copy_to_user(useraddr + 1096 offsetof(struct ethtool_rxfh_indir, ring_index[0]), 1097 indir, dev_size * sizeof(indir[0]))) 1098 ret = -EFAULT; 1099 1100 out: 1101 kfree(indir); 1102 return ret; 1103 } 1104 1105 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, 1106 void __user *useraddr) 1107 { 1108 struct ethtool_rxnfc rx_rings; 1109 u32 user_size, dev_size, i; 1110 u32 *indir; 1111 const struct ethtool_ops *ops = dev->ethtool_ops; 1112 int ret; 1113 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); 1114 1115 if (!ops->get_rxfh_indir_size || !ops->set_rxfh || 1116 !ops->get_rxnfc) 1117 return -EOPNOTSUPP; 1118 1119 dev_size = ops->get_rxfh_indir_size(dev); 1120 if (dev_size == 0) 1121 return -EOPNOTSUPP; 1122 1123 if (copy_from_user(&user_size, 1124 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1125 sizeof(user_size))) 1126 return -EFAULT; 1127 1128 if (user_size != 0 && user_size != dev_size) 1129 return -EINVAL; 1130 1131 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); 1132 if (!indir) 1133 return -ENOMEM; 1134 1135 rx_rings.cmd = ETHTOOL_GRXRINGS; 1136 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1137 if (ret) 1138 goto out; 1139 1140 if (user_size == 0) { 1141 for (i = 0; i < dev_size; i++) 1142 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1143 } else { 1144 ret = ethtool_copy_validate_indir(indir, 1145 useraddr + ringidx_offset, 1146 &rx_rings, 1147 dev_size); 1148 if (ret) 1149 goto out; 1150 } 1151 1152 ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE); 1153 if (ret) 1154 goto out; 1155 1156 /* indicate whether rxfh was set to default */ 1157 if (user_size == 0) 1158 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1159 else 1160 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1161 1162 out: 1163 kfree(indir); 1164 return ret; 1165 } 1166 1167 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, 1168 void __user *useraddr) 1169 { 1170 int ret; 1171 const struct ethtool_ops *ops = dev->ethtool_ops; 1172 u32 user_indir_size, user_key_size; 1173 u32 dev_indir_size = 0, dev_key_size = 0; 1174 struct ethtool_rxfh rxfh; 1175 u32 total_size; 1176 u32 indir_bytes; 1177 u32 *indir = NULL; 1178 u8 dev_hfunc = 0; 1179 u8 *hkey = NULL; 1180 u8 *rss_config; 1181 1182 if (!ops->get_rxfh) 1183 return -EOPNOTSUPP; 1184 1185 if (ops->get_rxfh_indir_size) 1186 dev_indir_size = ops->get_rxfh_indir_size(dev); 1187 if (ops->get_rxfh_key_size) 1188 dev_key_size = ops->get_rxfh_key_size(dev); 1189 1190 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1191 return -EFAULT; 1192 user_indir_size = rxfh.indir_size; 1193 user_key_size = rxfh.key_size; 1194 1195 /* Check that reserved fields are 0 for now */ 1196 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32) 1197 return -EINVAL; 1198 /* Most drivers don't handle rss_context, check it's 0 as well */ 1199 if (rxfh.rss_context && !ops->get_rxfh_context) 1200 return -EOPNOTSUPP; 1201 1202 rxfh.indir_size = dev_indir_size; 1203 rxfh.key_size = dev_key_size; 1204 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) 1205 return -EFAULT; 1206 1207 if ((user_indir_size && (user_indir_size != dev_indir_size)) || 1208 (user_key_size && (user_key_size != dev_key_size))) 1209 return -EINVAL; 1210 1211 indir_bytes = user_indir_size * sizeof(indir[0]); 1212 total_size = indir_bytes + user_key_size; 1213 rss_config = kzalloc(total_size, GFP_USER); 1214 if (!rss_config) 1215 return -ENOMEM; 1216 1217 if (user_indir_size) 1218 indir = (u32 *)rss_config; 1219 1220 if (user_key_size) 1221 hkey = rss_config + indir_bytes; 1222 1223 if (rxfh.rss_context) 1224 ret = dev->ethtool_ops->get_rxfh_context(dev, indir, hkey, 1225 &dev_hfunc, 1226 rxfh.rss_context); 1227 else 1228 ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc); 1229 if (ret) 1230 goto out; 1231 1232 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), 1233 &dev_hfunc, sizeof(rxfh.hfunc))) { 1234 ret = -EFAULT; 1235 } else if (copy_to_user(useraddr + 1236 offsetof(struct ethtool_rxfh, rss_config[0]), 1237 rss_config, total_size)) { 1238 ret = -EFAULT; 1239 } 1240 out: 1241 kfree(rss_config); 1242 1243 return ret; 1244 } 1245 1246 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, 1247 void __user *useraddr) 1248 { 1249 int ret; 1250 const struct ethtool_ops *ops = dev->ethtool_ops; 1251 struct ethtool_rxnfc rx_rings; 1252 struct ethtool_rxfh rxfh; 1253 u32 dev_indir_size = 0, dev_key_size = 0, i; 1254 u32 *indir = NULL, indir_bytes = 0; 1255 u8 *hkey = NULL; 1256 u8 *rss_config; 1257 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); 1258 bool delete = false; 1259 1260 if (!ops->get_rxnfc || !ops->set_rxfh) 1261 return -EOPNOTSUPP; 1262 1263 if (ops->get_rxfh_indir_size) 1264 dev_indir_size = ops->get_rxfh_indir_size(dev); 1265 if (ops->get_rxfh_key_size) 1266 dev_key_size = ops->get_rxfh_key_size(dev); 1267 1268 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1269 return -EFAULT; 1270 1271 /* Check that reserved fields are 0 for now */ 1272 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32) 1273 return -EINVAL; 1274 /* Most drivers don't handle rss_context, check it's 0 as well */ 1275 if (rxfh.rss_context && !ops->set_rxfh_context) 1276 return -EOPNOTSUPP; 1277 1278 /* If either indir, hash key or function is valid, proceed further. 1279 * Must request at least one change: indir size, hash key or function. 1280 */ 1281 if ((rxfh.indir_size && 1282 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && 1283 rxfh.indir_size != dev_indir_size) || 1284 (rxfh.key_size && (rxfh.key_size != dev_key_size)) || 1285 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && 1286 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE)) 1287 return -EINVAL; 1288 1289 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1290 indir_bytes = dev_indir_size * sizeof(indir[0]); 1291 1292 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER); 1293 if (!rss_config) 1294 return -ENOMEM; 1295 1296 rx_rings.cmd = ETHTOOL_GRXRINGS; 1297 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1298 if (ret) 1299 goto out; 1300 1301 /* rxfh.indir_size == 0 means reset the indir table to default (master 1302 * context) or delete the context (other RSS contexts). 1303 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. 1304 */ 1305 if (rxfh.indir_size && 1306 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { 1307 indir = (u32 *)rss_config; 1308 ret = ethtool_copy_validate_indir(indir, 1309 useraddr + rss_cfg_offset, 1310 &rx_rings, 1311 rxfh.indir_size); 1312 if (ret) 1313 goto out; 1314 } else if (rxfh.indir_size == 0) { 1315 if (rxfh.rss_context == 0) { 1316 indir = (u32 *)rss_config; 1317 for (i = 0; i < dev_indir_size; i++) 1318 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1319 } else { 1320 delete = true; 1321 } 1322 } 1323 1324 if (rxfh.key_size) { 1325 hkey = rss_config + indir_bytes; 1326 if (copy_from_user(hkey, 1327 useraddr + rss_cfg_offset + indir_bytes, 1328 rxfh.key_size)) { 1329 ret = -EFAULT; 1330 goto out; 1331 } 1332 } 1333 1334 if (rxfh.rss_context) 1335 ret = ops->set_rxfh_context(dev, indir, hkey, rxfh.hfunc, 1336 &rxfh.rss_context, delete); 1337 else 1338 ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc); 1339 if (ret) 1340 goto out; 1341 1342 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), 1343 &rxfh.rss_context, sizeof(rxfh.rss_context))) 1344 ret = -EFAULT; 1345 1346 if (!rxfh.rss_context) { 1347 /* indicate whether rxfh was set to default */ 1348 if (rxfh.indir_size == 0) 1349 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1350 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1351 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1352 } 1353 1354 out: 1355 kfree(rss_config); 1356 return ret; 1357 } 1358 1359 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) 1360 { 1361 struct ethtool_regs regs; 1362 const struct ethtool_ops *ops = dev->ethtool_ops; 1363 void *regbuf; 1364 int reglen, ret; 1365 1366 if (!ops->get_regs || !ops->get_regs_len) 1367 return -EOPNOTSUPP; 1368 1369 if (copy_from_user(®s, useraddr, sizeof(regs))) 1370 return -EFAULT; 1371 1372 reglen = ops->get_regs_len(dev); 1373 if (reglen <= 0) 1374 return reglen; 1375 1376 if (regs.len > reglen) 1377 regs.len = reglen; 1378 1379 regbuf = vzalloc(reglen); 1380 if (!regbuf) 1381 return -ENOMEM; 1382 1383 if (regs.len < reglen) 1384 reglen = regs.len; 1385 1386 ops->get_regs(dev, ®s, regbuf); 1387 1388 ret = -EFAULT; 1389 if (copy_to_user(useraddr, ®s, sizeof(regs))) 1390 goto out; 1391 useraddr += offsetof(struct ethtool_regs, data); 1392 if (copy_to_user(useraddr, regbuf, reglen)) 1393 goto out; 1394 ret = 0; 1395 1396 out: 1397 vfree(regbuf); 1398 return ret; 1399 } 1400 1401 static int ethtool_reset(struct net_device *dev, char __user *useraddr) 1402 { 1403 struct ethtool_value reset; 1404 int ret; 1405 1406 if (!dev->ethtool_ops->reset) 1407 return -EOPNOTSUPP; 1408 1409 if (copy_from_user(&reset, useraddr, sizeof(reset))) 1410 return -EFAULT; 1411 1412 ret = dev->ethtool_ops->reset(dev, &reset.data); 1413 if (ret) 1414 return ret; 1415 1416 if (copy_to_user(useraddr, &reset, sizeof(reset))) 1417 return -EFAULT; 1418 return 0; 1419 } 1420 1421 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) 1422 { 1423 struct ethtool_wolinfo wol; 1424 1425 if (!dev->ethtool_ops->get_wol) 1426 return -EOPNOTSUPP; 1427 1428 memset(&wol, 0, sizeof(struct ethtool_wolinfo)); 1429 wol.cmd = ETHTOOL_GWOL; 1430 dev->ethtool_ops->get_wol(dev, &wol); 1431 1432 if (copy_to_user(useraddr, &wol, sizeof(wol))) 1433 return -EFAULT; 1434 return 0; 1435 } 1436 1437 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) 1438 { 1439 struct ethtool_wolinfo wol, cur_wol; 1440 int ret; 1441 1442 if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol) 1443 return -EOPNOTSUPP; 1444 1445 memset(&cur_wol, 0, sizeof(struct ethtool_wolinfo)); 1446 cur_wol.cmd = ETHTOOL_GWOL; 1447 dev->ethtool_ops->get_wol(dev, &cur_wol); 1448 1449 if (copy_from_user(&wol, useraddr, sizeof(wol))) 1450 return -EFAULT; 1451 1452 if (wol.wolopts & ~cur_wol.supported) 1453 return -EINVAL; 1454 1455 if (wol.wolopts == cur_wol.wolopts && 1456 !memcmp(wol.sopass, cur_wol.sopass, sizeof(wol.sopass))) 1457 return 0; 1458 1459 ret = dev->ethtool_ops->set_wol(dev, &wol); 1460 if (ret) 1461 return ret; 1462 1463 dev->wol_enabled = !!wol.wolopts; 1464 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL); 1465 1466 return 0; 1467 } 1468 1469 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) 1470 { 1471 struct ethtool_eee edata; 1472 int rc; 1473 1474 if (!dev->ethtool_ops->get_eee) 1475 return -EOPNOTSUPP; 1476 1477 memset(&edata, 0, sizeof(struct ethtool_eee)); 1478 edata.cmd = ETHTOOL_GEEE; 1479 rc = dev->ethtool_ops->get_eee(dev, &edata); 1480 1481 if (rc) 1482 return rc; 1483 1484 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1485 return -EFAULT; 1486 1487 return 0; 1488 } 1489 1490 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) 1491 { 1492 struct ethtool_eee edata; 1493 int ret; 1494 1495 if (!dev->ethtool_ops->set_eee) 1496 return -EOPNOTSUPP; 1497 1498 if (copy_from_user(&edata, useraddr, sizeof(edata))) 1499 return -EFAULT; 1500 1501 ret = dev->ethtool_ops->set_eee(dev, &edata); 1502 if (!ret) 1503 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL); 1504 return ret; 1505 } 1506 1507 static int ethtool_nway_reset(struct net_device *dev) 1508 { 1509 if (!dev->ethtool_ops->nway_reset) 1510 return -EOPNOTSUPP; 1511 1512 return dev->ethtool_ops->nway_reset(dev); 1513 } 1514 1515 static int ethtool_get_link(struct net_device *dev, char __user *useraddr) 1516 { 1517 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; 1518 int link = __ethtool_get_link(dev); 1519 1520 if (link < 0) 1521 return link; 1522 1523 edata.data = link; 1524 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1525 return -EFAULT; 1526 return 0; 1527 } 1528 1529 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, 1530 int (*getter)(struct net_device *, 1531 struct ethtool_eeprom *, u8 *), 1532 u32 total_len) 1533 { 1534 struct ethtool_eeprom eeprom; 1535 void __user *userbuf = useraddr + sizeof(eeprom); 1536 u32 bytes_remaining; 1537 u8 *data; 1538 int ret = 0; 1539 1540 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1541 return -EFAULT; 1542 1543 /* Check for wrap and zero */ 1544 if (eeprom.offset + eeprom.len <= eeprom.offset) 1545 return -EINVAL; 1546 1547 /* Check for exceeding total eeprom len */ 1548 if (eeprom.offset + eeprom.len > total_len) 1549 return -EINVAL; 1550 1551 data = kzalloc(PAGE_SIZE, GFP_USER); 1552 if (!data) 1553 return -ENOMEM; 1554 1555 bytes_remaining = eeprom.len; 1556 while (bytes_remaining > 0) { 1557 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1558 1559 ret = getter(dev, &eeprom, data); 1560 if (ret) 1561 break; 1562 if (!eeprom.len) { 1563 ret = -EIO; 1564 break; 1565 } 1566 if (copy_to_user(userbuf, data, eeprom.len)) { 1567 ret = -EFAULT; 1568 break; 1569 } 1570 userbuf += eeprom.len; 1571 eeprom.offset += eeprom.len; 1572 bytes_remaining -= eeprom.len; 1573 } 1574 1575 eeprom.len = userbuf - (useraddr + sizeof(eeprom)); 1576 eeprom.offset -= eeprom.len; 1577 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) 1578 ret = -EFAULT; 1579 1580 kfree(data); 1581 return ret; 1582 } 1583 1584 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) 1585 { 1586 const struct ethtool_ops *ops = dev->ethtool_ops; 1587 1588 if (!ops->get_eeprom || !ops->get_eeprom_len || 1589 !ops->get_eeprom_len(dev)) 1590 return -EOPNOTSUPP; 1591 1592 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, 1593 ops->get_eeprom_len(dev)); 1594 } 1595 1596 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) 1597 { 1598 struct ethtool_eeprom eeprom; 1599 const struct ethtool_ops *ops = dev->ethtool_ops; 1600 void __user *userbuf = useraddr + sizeof(eeprom); 1601 u32 bytes_remaining; 1602 u8 *data; 1603 int ret = 0; 1604 1605 if (!ops->set_eeprom || !ops->get_eeprom_len || 1606 !ops->get_eeprom_len(dev)) 1607 return -EOPNOTSUPP; 1608 1609 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1610 return -EFAULT; 1611 1612 /* Check for wrap and zero */ 1613 if (eeprom.offset + eeprom.len <= eeprom.offset) 1614 return -EINVAL; 1615 1616 /* Check for exceeding total eeprom len */ 1617 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) 1618 return -EINVAL; 1619 1620 data = kzalloc(PAGE_SIZE, GFP_USER); 1621 if (!data) 1622 return -ENOMEM; 1623 1624 bytes_remaining = eeprom.len; 1625 while (bytes_remaining > 0) { 1626 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1627 1628 if (copy_from_user(data, userbuf, eeprom.len)) { 1629 ret = -EFAULT; 1630 break; 1631 } 1632 ret = ops->set_eeprom(dev, &eeprom, data); 1633 if (ret) 1634 break; 1635 userbuf += eeprom.len; 1636 eeprom.offset += eeprom.len; 1637 bytes_remaining -= eeprom.len; 1638 } 1639 1640 kfree(data); 1641 return ret; 1642 } 1643 1644 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, 1645 void __user *useraddr) 1646 { 1647 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 1648 struct kernel_ethtool_coalesce kernel_coalesce = {}; 1649 int ret; 1650 1651 if (!dev->ethtool_ops->get_coalesce) 1652 return -EOPNOTSUPP; 1653 1654 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 1655 NULL); 1656 if (ret) 1657 return ret; 1658 1659 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 1660 return -EFAULT; 1661 return 0; 1662 } 1663 1664 static bool 1665 ethtool_set_coalesce_supported(struct net_device *dev, 1666 struct ethtool_coalesce *coalesce) 1667 { 1668 u32 supported_params = dev->ethtool_ops->supported_coalesce_params; 1669 u32 nonzero_params = 0; 1670 1671 if (coalesce->rx_coalesce_usecs) 1672 nonzero_params |= ETHTOOL_COALESCE_RX_USECS; 1673 if (coalesce->rx_max_coalesced_frames) 1674 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; 1675 if (coalesce->rx_coalesce_usecs_irq) 1676 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; 1677 if (coalesce->rx_max_coalesced_frames_irq) 1678 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; 1679 if (coalesce->tx_coalesce_usecs) 1680 nonzero_params |= ETHTOOL_COALESCE_TX_USECS; 1681 if (coalesce->tx_max_coalesced_frames) 1682 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; 1683 if (coalesce->tx_coalesce_usecs_irq) 1684 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; 1685 if (coalesce->tx_max_coalesced_frames_irq) 1686 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; 1687 if (coalesce->stats_block_coalesce_usecs) 1688 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; 1689 if (coalesce->use_adaptive_rx_coalesce) 1690 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; 1691 if (coalesce->use_adaptive_tx_coalesce) 1692 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; 1693 if (coalesce->pkt_rate_low) 1694 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; 1695 if (coalesce->rx_coalesce_usecs_low) 1696 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; 1697 if (coalesce->rx_max_coalesced_frames_low) 1698 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; 1699 if (coalesce->tx_coalesce_usecs_low) 1700 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; 1701 if (coalesce->tx_max_coalesced_frames_low) 1702 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; 1703 if (coalesce->pkt_rate_high) 1704 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; 1705 if (coalesce->rx_coalesce_usecs_high) 1706 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; 1707 if (coalesce->rx_max_coalesced_frames_high) 1708 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; 1709 if (coalesce->tx_coalesce_usecs_high) 1710 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; 1711 if (coalesce->tx_max_coalesced_frames_high) 1712 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; 1713 if (coalesce->rate_sample_interval) 1714 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; 1715 1716 return (supported_params & nonzero_params) == nonzero_params; 1717 } 1718 1719 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, 1720 void __user *useraddr) 1721 { 1722 struct kernel_ethtool_coalesce kernel_coalesce = {}; 1723 struct ethtool_coalesce coalesce; 1724 int ret; 1725 1726 if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce) 1727 return -EOPNOTSUPP; 1728 1729 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 1730 NULL); 1731 if (ret) 1732 return ret; 1733 1734 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) 1735 return -EFAULT; 1736 1737 if (!ethtool_set_coalesce_supported(dev, &coalesce)) 1738 return -EOPNOTSUPP; 1739 1740 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, 1741 NULL); 1742 if (!ret) 1743 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL); 1744 return ret; 1745 } 1746 1747 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) 1748 { 1749 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; 1750 struct kernel_ethtool_ringparam kernel_ringparam = {}; 1751 1752 if (!dev->ethtool_ops->get_ringparam) 1753 return -EOPNOTSUPP; 1754 1755 dev->ethtool_ops->get_ringparam(dev, &ringparam, 1756 &kernel_ringparam, NULL); 1757 1758 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) 1759 return -EFAULT; 1760 return 0; 1761 } 1762 1763 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) 1764 { 1765 struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM }; 1766 struct kernel_ethtool_ringparam kernel_ringparam; 1767 int ret; 1768 1769 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) 1770 return -EOPNOTSUPP; 1771 1772 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) 1773 return -EFAULT; 1774 1775 dev->ethtool_ops->get_ringparam(dev, &max, &kernel_ringparam, NULL); 1776 1777 /* ensure new ring parameters are within the maximums */ 1778 if (ringparam.rx_pending > max.rx_max_pending || 1779 ringparam.rx_mini_pending > max.rx_mini_max_pending || 1780 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || 1781 ringparam.tx_pending > max.tx_max_pending) 1782 return -EINVAL; 1783 1784 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, 1785 &kernel_ringparam, NULL); 1786 if (!ret) 1787 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL); 1788 return ret; 1789 } 1790 1791 static noinline_for_stack int ethtool_get_channels(struct net_device *dev, 1792 void __user *useraddr) 1793 { 1794 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; 1795 1796 if (!dev->ethtool_ops->get_channels) 1797 return -EOPNOTSUPP; 1798 1799 dev->ethtool_ops->get_channels(dev, &channels); 1800 1801 if (copy_to_user(useraddr, &channels, sizeof(channels))) 1802 return -EFAULT; 1803 return 0; 1804 } 1805 1806 static noinline_for_stack int ethtool_set_channels(struct net_device *dev, 1807 void __user *useraddr) 1808 { 1809 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; 1810 u16 from_channel, to_channel; 1811 u64 max_rxnfc_in_use; 1812 u32 max_rxfh_in_use; 1813 unsigned int i; 1814 int ret; 1815 1816 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) 1817 return -EOPNOTSUPP; 1818 1819 if (copy_from_user(&channels, useraddr, sizeof(channels))) 1820 return -EFAULT; 1821 1822 dev->ethtool_ops->get_channels(dev, &curr); 1823 1824 if (channels.rx_count == curr.rx_count && 1825 channels.tx_count == curr.tx_count && 1826 channels.combined_count == curr.combined_count && 1827 channels.other_count == curr.other_count) 1828 return 0; 1829 1830 /* ensure new counts are within the maximums */ 1831 if (channels.rx_count > curr.max_rx || 1832 channels.tx_count > curr.max_tx || 1833 channels.combined_count > curr.max_combined || 1834 channels.other_count > curr.max_other) 1835 return -EINVAL; 1836 1837 /* ensure there is at least one RX and one TX channel */ 1838 if (!channels.combined_count && 1839 (!channels.rx_count || !channels.tx_count)) 1840 return -EINVAL; 1841 1842 /* ensure the new Rx count fits within the configured Rx flow 1843 * indirection table/rxnfc settings */ 1844 if (ethtool_get_max_rxnfc_channel(dev, &max_rxnfc_in_use)) 1845 max_rxnfc_in_use = 0; 1846 if (!netif_is_rxfh_configured(dev) || 1847 ethtool_get_max_rxfh_channel(dev, &max_rxfh_in_use)) 1848 max_rxfh_in_use = 0; 1849 if (channels.combined_count + channels.rx_count <= 1850 max_t(u64, max_rxnfc_in_use, max_rxfh_in_use)) 1851 return -EINVAL; 1852 1853 /* Disabling channels, query zero-copy AF_XDP sockets */ 1854 from_channel = channels.combined_count + 1855 min(channels.rx_count, channels.tx_count); 1856 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); 1857 for (i = from_channel; i < to_channel; i++) 1858 if (xsk_get_pool_from_qid(dev, i)) 1859 return -EINVAL; 1860 1861 ret = dev->ethtool_ops->set_channels(dev, &channels); 1862 if (!ret) 1863 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL); 1864 return ret; 1865 } 1866 1867 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) 1868 { 1869 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; 1870 1871 if (!dev->ethtool_ops->get_pauseparam) 1872 return -EOPNOTSUPP; 1873 1874 dev->ethtool_ops->get_pauseparam(dev, &pauseparam); 1875 1876 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) 1877 return -EFAULT; 1878 return 0; 1879 } 1880 1881 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) 1882 { 1883 struct ethtool_pauseparam pauseparam; 1884 int ret; 1885 1886 if (!dev->ethtool_ops->set_pauseparam) 1887 return -EOPNOTSUPP; 1888 1889 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) 1890 return -EFAULT; 1891 1892 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); 1893 if (!ret) 1894 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL); 1895 return ret; 1896 } 1897 1898 static int ethtool_self_test(struct net_device *dev, char __user *useraddr) 1899 { 1900 struct ethtool_test test; 1901 const struct ethtool_ops *ops = dev->ethtool_ops; 1902 u64 *data; 1903 int ret, test_len; 1904 1905 if (!ops->self_test || !ops->get_sset_count) 1906 return -EOPNOTSUPP; 1907 1908 test_len = ops->get_sset_count(dev, ETH_SS_TEST); 1909 if (test_len < 0) 1910 return test_len; 1911 WARN_ON(test_len == 0); 1912 1913 if (copy_from_user(&test, useraddr, sizeof(test))) 1914 return -EFAULT; 1915 1916 test.len = test_len; 1917 data = kcalloc(test_len, sizeof(u64), GFP_USER); 1918 if (!data) 1919 return -ENOMEM; 1920 1921 netif_testing_on(dev); 1922 ops->self_test(dev, &test, data); 1923 netif_testing_off(dev); 1924 1925 ret = -EFAULT; 1926 if (copy_to_user(useraddr, &test, sizeof(test))) 1927 goto out; 1928 useraddr += sizeof(test); 1929 if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) 1930 goto out; 1931 ret = 0; 1932 1933 out: 1934 kfree(data); 1935 return ret; 1936 } 1937 1938 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) 1939 { 1940 struct ethtool_gstrings gstrings; 1941 u8 *data; 1942 int ret; 1943 1944 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) 1945 return -EFAULT; 1946 1947 ret = __ethtool_get_sset_count(dev, gstrings.string_set); 1948 if (ret < 0) 1949 return ret; 1950 if (ret > S32_MAX / ETH_GSTRING_LEN) 1951 return -ENOMEM; 1952 WARN_ON_ONCE(!ret); 1953 1954 gstrings.len = ret; 1955 1956 if (gstrings.len) { 1957 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); 1958 if (!data) 1959 return -ENOMEM; 1960 1961 __ethtool_get_strings(dev, gstrings.string_set, data); 1962 } else { 1963 data = NULL; 1964 } 1965 1966 ret = -EFAULT; 1967 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) 1968 goto out; 1969 useraddr += sizeof(gstrings); 1970 if (gstrings.len && 1971 copy_to_user(useraddr, data, 1972 array_size(gstrings.len, ETH_GSTRING_LEN))) 1973 goto out; 1974 ret = 0; 1975 1976 out: 1977 vfree(data); 1978 return ret; 1979 } 1980 1981 __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) 1982 { 1983 va_list args; 1984 1985 va_start(args, fmt); 1986 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); 1987 va_end(args); 1988 1989 *data += ETH_GSTRING_LEN; 1990 } 1991 EXPORT_SYMBOL(ethtool_sprintf); 1992 1993 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) 1994 { 1995 struct ethtool_value id; 1996 static bool busy; 1997 const struct ethtool_ops *ops = dev->ethtool_ops; 1998 netdevice_tracker dev_tracker; 1999 int rc; 2000 2001 if (!ops->set_phys_id) 2002 return -EOPNOTSUPP; 2003 2004 if (busy) 2005 return -EBUSY; 2006 2007 if (copy_from_user(&id, useraddr, sizeof(id))) 2008 return -EFAULT; 2009 2010 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); 2011 if (rc < 0) 2012 return rc; 2013 2014 /* Drop the RTNL lock while waiting, but prevent reentry or 2015 * removal of the device. 2016 */ 2017 busy = true; 2018 netdev_hold(dev, &dev_tracker, GFP_KERNEL); 2019 rtnl_unlock(); 2020 2021 if (rc == 0) { 2022 /* Driver will handle this itself */ 2023 schedule_timeout_interruptible( 2024 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); 2025 } else { 2026 /* Driver expects to be called at twice the frequency in rc */ 2027 int n = rc * 2, interval = HZ / n; 2028 u64 count = mul_u32_u32(n, id.data); 2029 u64 i = 0; 2030 2031 do { 2032 rtnl_lock(); 2033 rc = ops->set_phys_id(dev, 2034 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); 2035 rtnl_unlock(); 2036 if (rc) 2037 break; 2038 schedule_timeout_interruptible(interval); 2039 } while (!signal_pending(current) && (!id.data || i < count)); 2040 } 2041 2042 rtnl_lock(); 2043 netdev_put(dev, &dev_tracker); 2044 busy = false; 2045 2046 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); 2047 return rc; 2048 } 2049 2050 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) 2051 { 2052 struct ethtool_stats stats; 2053 const struct ethtool_ops *ops = dev->ethtool_ops; 2054 u64 *data; 2055 int ret, n_stats; 2056 2057 if (!ops->get_ethtool_stats || !ops->get_sset_count) 2058 return -EOPNOTSUPP; 2059 2060 n_stats = ops->get_sset_count(dev, ETH_SS_STATS); 2061 if (n_stats < 0) 2062 return n_stats; 2063 if (n_stats > S32_MAX / sizeof(u64)) 2064 return -ENOMEM; 2065 WARN_ON_ONCE(!n_stats); 2066 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2067 return -EFAULT; 2068 2069 stats.n_stats = n_stats; 2070 2071 if (n_stats) { 2072 data = vzalloc(array_size(n_stats, sizeof(u64))); 2073 if (!data) 2074 return -ENOMEM; 2075 ops->get_ethtool_stats(dev, &stats, data); 2076 } else { 2077 data = NULL; 2078 } 2079 2080 ret = -EFAULT; 2081 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2082 goto out; 2083 useraddr += sizeof(stats); 2084 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) 2085 goto out; 2086 ret = 0; 2087 2088 out: 2089 vfree(data); 2090 return ret; 2091 } 2092 2093 static int ethtool_vzalloc_stats_array(int n_stats, u64 **data) 2094 { 2095 if (n_stats < 0) 2096 return n_stats; 2097 if (n_stats > S32_MAX / sizeof(u64)) 2098 return -ENOMEM; 2099 if (WARN_ON_ONCE(!n_stats)) 2100 return -EOPNOTSUPP; 2101 2102 *data = vzalloc(array_size(n_stats, sizeof(u64))); 2103 if (!*data) 2104 return -ENOMEM; 2105 2106 return 0; 2107 } 2108 2109 static int ethtool_get_phy_stats_phydev(struct phy_device *phydev, 2110 struct ethtool_stats *stats, 2111 u64 **data) 2112 { 2113 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 2114 int n_stats, ret; 2115 2116 if (!phy_ops || !phy_ops->get_sset_count || !phy_ops->get_stats) 2117 return -EOPNOTSUPP; 2118 2119 n_stats = phy_ops->get_sset_count(phydev); 2120 2121 ret = ethtool_vzalloc_stats_array(n_stats, data); 2122 if (ret) 2123 return ret; 2124 2125 stats->n_stats = n_stats; 2126 return phy_ops->get_stats(phydev, stats, *data); 2127 } 2128 2129 static int ethtool_get_phy_stats_ethtool(struct net_device *dev, 2130 struct ethtool_stats *stats, 2131 u64 **data) 2132 { 2133 const struct ethtool_ops *ops = dev->ethtool_ops; 2134 int n_stats, ret; 2135 2136 if (!ops || !ops->get_sset_count || ops->get_ethtool_phy_stats) 2137 return -EOPNOTSUPP; 2138 2139 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); 2140 2141 ret = ethtool_vzalloc_stats_array(n_stats, data); 2142 if (ret) 2143 return ret; 2144 2145 stats->n_stats = n_stats; 2146 ops->get_ethtool_phy_stats(dev, stats, *data); 2147 2148 return 0; 2149 } 2150 2151 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) 2152 { 2153 struct phy_device *phydev = dev->phydev; 2154 struct ethtool_stats stats; 2155 u64 *data = NULL; 2156 int ret = -EOPNOTSUPP; 2157 2158 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2159 return -EFAULT; 2160 2161 if (phydev) 2162 ret = ethtool_get_phy_stats_phydev(phydev, &stats, &data); 2163 2164 if (ret == -EOPNOTSUPP) 2165 ret = ethtool_get_phy_stats_ethtool(dev, &stats, &data); 2166 2167 if (ret) 2168 goto out; 2169 2170 if (copy_to_user(useraddr, &stats, sizeof(stats))) { 2171 ret = -EFAULT; 2172 goto out; 2173 } 2174 2175 useraddr += sizeof(stats); 2176 if (copy_to_user(useraddr, data, array_size(stats.n_stats, sizeof(u64)))) 2177 ret = -EFAULT; 2178 2179 out: 2180 vfree(data); 2181 return ret; 2182 } 2183 2184 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) 2185 { 2186 struct ethtool_perm_addr epaddr; 2187 2188 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) 2189 return -EFAULT; 2190 2191 if (epaddr.size < dev->addr_len) 2192 return -ETOOSMALL; 2193 epaddr.size = dev->addr_len; 2194 2195 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) 2196 return -EFAULT; 2197 useraddr += sizeof(epaddr); 2198 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) 2199 return -EFAULT; 2200 return 0; 2201 } 2202 2203 static int ethtool_get_value(struct net_device *dev, char __user *useraddr, 2204 u32 cmd, u32 (*actor)(struct net_device *)) 2205 { 2206 struct ethtool_value edata = { .cmd = cmd }; 2207 2208 if (!actor) 2209 return -EOPNOTSUPP; 2210 2211 edata.data = actor(dev); 2212 2213 if (copy_to_user(useraddr, &edata, sizeof(edata))) 2214 return -EFAULT; 2215 return 0; 2216 } 2217 2218 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, 2219 void (*actor)(struct net_device *, u32)) 2220 { 2221 struct ethtool_value edata; 2222 2223 if (!actor) 2224 return -EOPNOTSUPP; 2225 2226 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2227 return -EFAULT; 2228 2229 actor(dev, edata.data); 2230 return 0; 2231 } 2232 2233 static int ethtool_set_value(struct net_device *dev, char __user *useraddr, 2234 int (*actor)(struct net_device *, u32)) 2235 { 2236 struct ethtool_value edata; 2237 2238 if (!actor) 2239 return -EOPNOTSUPP; 2240 2241 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2242 return -EFAULT; 2243 2244 return actor(dev, edata.data); 2245 } 2246 2247 static int 2248 ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) 2249 { 2250 if (!dev->ethtool_ops->flash_device) { 2251 req->devlink = netdev_to_devlink_get(dev); 2252 return 0; 2253 } 2254 2255 return dev->ethtool_ops->flash_device(dev, &req->efl); 2256 } 2257 2258 static int ethtool_set_dump(struct net_device *dev, 2259 void __user *useraddr) 2260 { 2261 struct ethtool_dump dump; 2262 2263 if (!dev->ethtool_ops->set_dump) 2264 return -EOPNOTSUPP; 2265 2266 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2267 return -EFAULT; 2268 2269 return dev->ethtool_ops->set_dump(dev, &dump); 2270 } 2271 2272 static int ethtool_get_dump_flag(struct net_device *dev, 2273 void __user *useraddr) 2274 { 2275 int ret; 2276 struct ethtool_dump dump; 2277 const struct ethtool_ops *ops = dev->ethtool_ops; 2278 2279 if (!ops->get_dump_flag) 2280 return -EOPNOTSUPP; 2281 2282 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2283 return -EFAULT; 2284 2285 ret = ops->get_dump_flag(dev, &dump); 2286 if (ret) 2287 return ret; 2288 2289 if (copy_to_user(useraddr, &dump, sizeof(dump))) 2290 return -EFAULT; 2291 return 0; 2292 } 2293 2294 static int ethtool_get_dump_data(struct net_device *dev, 2295 void __user *useraddr) 2296 { 2297 int ret; 2298 __u32 len; 2299 struct ethtool_dump dump, tmp; 2300 const struct ethtool_ops *ops = dev->ethtool_ops; 2301 void *data = NULL; 2302 2303 if (!ops->get_dump_data || !ops->get_dump_flag) 2304 return -EOPNOTSUPP; 2305 2306 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2307 return -EFAULT; 2308 2309 memset(&tmp, 0, sizeof(tmp)); 2310 tmp.cmd = ETHTOOL_GET_DUMP_FLAG; 2311 ret = ops->get_dump_flag(dev, &tmp); 2312 if (ret) 2313 return ret; 2314 2315 len = min(tmp.len, dump.len); 2316 if (!len) 2317 return -EFAULT; 2318 2319 /* Don't ever let the driver think there's more space available 2320 * than it requested with .get_dump_flag(). 2321 */ 2322 dump.len = len; 2323 2324 /* Always allocate enough space to hold the whole thing so that the 2325 * driver does not need to check the length and bother with partial 2326 * dumping. 2327 */ 2328 data = vzalloc(tmp.len); 2329 if (!data) 2330 return -ENOMEM; 2331 ret = ops->get_dump_data(dev, &dump, data); 2332 if (ret) 2333 goto out; 2334 2335 /* There are two sane possibilities: 2336 * 1. The driver's .get_dump_data() does not touch dump.len. 2337 * 2. Or it may set dump.len to how much it really writes, which 2338 * should be tmp.len (or len if it can do a partial dump). 2339 * In any case respond to userspace with the actual length of data 2340 * it's receiving. 2341 */ 2342 WARN_ON(dump.len != len && dump.len != tmp.len); 2343 dump.len = len; 2344 2345 if (copy_to_user(useraddr, &dump, sizeof(dump))) { 2346 ret = -EFAULT; 2347 goto out; 2348 } 2349 useraddr += offsetof(struct ethtool_dump, data); 2350 if (copy_to_user(useraddr, data, len)) 2351 ret = -EFAULT; 2352 out: 2353 vfree(data); 2354 return ret; 2355 } 2356 2357 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) 2358 { 2359 struct ethtool_ts_info info; 2360 int err; 2361 2362 err = __ethtool_get_ts_info(dev, &info); 2363 if (err) 2364 return err; 2365 2366 if (copy_to_user(useraddr, &info, sizeof(info))) 2367 return -EFAULT; 2368 2369 return 0; 2370 } 2371 2372 int ethtool_get_module_info_call(struct net_device *dev, 2373 struct ethtool_modinfo *modinfo) 2374 { 2375 const struct ethtool_ops *ops = dev->ethtool_ops; 2376 struct phy_device *phydev = dev->phydev; 2377 2378 if (dev->sfp_bus) 2379 return sfp_get_module_info(dev->sfp_bus, modinfo); 2380 2381 if (phydev && phydev->drv && phydev->drv->module_info) 2382 return phydev->drv->module_info(phydev, modinfo); 2383 2384 if (ops->get_module_info) 2385 return ops->get_module_info(dev, modinfo); 2386 2387 return -EOPNOTSUPP; 2388 } 2389 2390 static int ethtool_get_module_info(struct net_device *dev, 2391 void __user *useraddr) 2392 { 2393 int ret; 2394 struct ethtool_modinfo modinfo; 2395 2396 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) 2397 return -EFAULT; 2398 2399 ret = ethtool_get_module_info_call(dev, &modinfo); 2400 if (ret) 2401 return ret; 2402 2403 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) 2404 return -EFAULT; 2405 2406 return 0; 2407 } 2408 2409 int ethtool_get_module_eeprom_call(struct net_device *dev, 2410 struct ethtool_eeprom *ee, u8 *data) 2411 { 2412 const struct ethtool_ops *ops = dev->ethtool_ops; 2413 struct phy_device *phydev = dev->phydev; 2414 2415 if (dev->sfp_bus) 2416 return sfp_get_module_eeprom(dev->sfp_bus, ee, data); 2417 2418 if (phydev && phydev->drv && phydev->drv->module_eeprom) 2419 return phydev->drv->module_eeprom(phydev, ee, data); 2420 2421 if (ops->get_module_eeprom) 2422 return ops->get_module_eeprom(dev, ee, data); 2423 2424 return -EOPNOTSUPP; 2425 } 2426 2427 static int ethtool_get_module_eeprom(struct net_device *dev, 2428 void __user *useraddr) 2429 { 2430 int ret; 2431 struct ethtool_modinfo modinfo; 2432 2433 ret = ethtool_get_module_info_call(dev, &modinfo); 2434 if (ret) 2435 return ret; 2436 2437 return ethtool_get_any_eeprom(dev, useraddr, 2438 ethtool_get_module_eeprom_call, 2439 modinfo.eeprom_len); 2440 } 2441 2442 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) 2443 { 2444 switch (tuna->id) { 2445 case ETHTOOL_RX_COPYBREAK: 2446 case ETHTOOL_TX_COPYBREAK: 2447 case ETHTOOL_TX_COPYBREAK_BUF_SIZE: 2448 if (tuna->len != sizeof(u32) || 2449 tuna->type_id != ETHTOOL_TUNABLE_U32) 2450 return -EINVAL; 2451 break; 2452 case ETHTOOL_PFC_PREVENTION_TOUT: 2453 if (tuna->len != sizeof(u16) || 2454 tuna->type_id != ETHTOOL_TUNABLE_U16) 2455 return -EINVAL; 2456 break; 2457 default: 2458 return -EINVAL; 2459 } 2460 2461 return 0; 2462 } 2463 2464 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) 2465 { 2466 int ret; 2467 struct ethtool_tunable tuna; 2468 const struct ethtool_ops *ops = dev->ethtool_ops; 2469 void *data; 2470 2471 if (!ops->get_tunable) 2472 return -EOPNOTSUPP; 2473 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2474 return -EFAULT; 2475 ret = ethtool_tunable_valid(&tuna); 2476 if (ret) 2477 return ret; 2478 data = kzalloc(tuna.len, GFP_USER); 2479 if (!data) 2480 return -ENOMEM; 2481 ret = ops->get_tunable(dev, &tuna, data); 2482 if (ret) 2483 goto out; 2484 useraddr += sizeof(tuna); 2485 ret = -EFAULT; 2486 if (copy_to_user(useraddr, data, tuna.len)) 2487 goto out; 2488 ret = 0; 2489 2490 out: 2491 kfree(data); 2492 return ret; 2493 } 2494 2495 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) 2496 { 2497 int ret; 2498 struct ethtool_tunable tuna; 2499 const struct ethtool_ops *ops = dev->ethtool_ops; 2500 void *data; 2501 2502 if (!ops->set_tunable) 2503 return -EOPNOTSUPP; 2504 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2505 return -EFAULT; 2506 ret = ethtool_tunable_valid(&tuna); 2507 if (ret) 2508 return ret; 2509 useraddr += sizeof(tuna); 2510 data = memdup_user(useraddr, tuna.len); 2511 if (IS_ERR(data)) 2512 return PTR_ERR(data); 2513 ret = ops->set_tunable(dev, &tuna, data); 2514 2515 kfree(data); 2516 return ret; 2517 } 2518 2519 static noinline_for_stack int 2520 ethtool_get_per_queue_coalesce(struct net_device *dev, 2521 void __user *useraddr, 2522 struct ethtool_per_queue_op *per_queue_opt) 2523 { 2524 u32 bit; 2525 int ret; 2526 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2527 2528 if (!dev->ethtool_ops->get_per_queue_coalesce) 2529 return -EOPNOTSUPP; 2530 2531 useraddr += sizeof(*per_queue_opt); 2532 2533 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, 2534 MAX_NUM_QUEUE); 2535 2536 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2537 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2538 2539 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); 2540 if (ret != 0) 2541 return ret; 2542 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2543 return -EFAULT; 2544 useraddr += sizeof(coalesce); 2545 } 2546 2547 return 0; 2548 } 2549 2550 static noinline_for_stack int 2551 ethtool_set_per_queue_coalesce(struct net_device *dev, 2552 void __user *useraddr, 2553 struct ethtool_per_queue_op *per_queue_opt) 2554 { 2555 u32 bit; 2556 int i, ret = 0; 2557 int n_queue; 2558 struct ethtool_coalesce *backup = NULL, *tmp = NULL; 2559 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2560 2561 if ((!dev->ethtool_ops->set_per_queue_coalesce) || 2562 (!dev->ethtool_ops->get_per_queue_coalesce)) 2563 return -EOPNOTSUPP; 2564 2565 useraddr += sizeof(*per_queue_opt); 2566 2567 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); 2568 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); 2569 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); 2570 if (!backup) 2571 return -ENOMEM; 2572 2573 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2574 struct ethtool_coalesce coalesce; 2575 2576 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); 2577 if (ret != 0) 2578 goto roll_back; 2579 2580 tmp++; 2581 2582 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { 2583 ret = -EFAULT; 2584 goto roll_back; 2585 } 2586 2587 if (!ethtool_set_coalesce_supported(dev, &coalesce)) { 2588 ret = -EOPNOTSUPP; 2589 goto roll_back; 2590 } 2591 2592 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); 2593 if (ret != 0) 2594 goto roll_back; 2595 2596 useraddr += sizeof(coalesce); 2597 } 2598 2599 roll_back: 2600 if (ret != 0) { 2601 tmp = backup; 2602 for_each_set_bit(i, queue_mask, bit) { 2603 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); 2604 tmp++; 2605 } 2606 } 2607 kfree(backup); 2608 2609 return ret; 2610 } 2611 2612 static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, 2613 void __user *useraddr, u32 sub_cmd) 2614 { 2615 struct ethtool_per_queue_op per_queue_opt; 2616 2617 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) 2618 return -EFAULT; 2619 2620 if (per_queue_opt.sub_command != sub_cmd) 2621 return -EINVAL; 2622 2623 switch (per_queue_opt.sub_command) { 2624 case ETHTOOL_GCOALESCE: 2625 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2626 case ETHTOOL_SCOALESCE: 2627 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2628 default: 2629 return -EOPNOTSUPP; 2630 } 2631 } 2632 2633 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) 2634 { 2635 switch (tuna->id) { 2636 case ETHTOOL_PHY_DOWNSHIFT: 2637 case ETHTOOL_PHY_FAST_LINK_DOWN: 2638 if (tuna->len != sizeof(u8) || 2639 tuna->type_id != ETHTOOL_TUNABLE_U8) 2640 return -EINVAL; 2641 break; 2642 case ETHTOOL_PHY_EDPD: 2643 if (tuna->len != sizeof(u16) || 2644 tuna->type_id != ETHTOOL_TUNABLE_U16) 2645 return -EINVAL; 2646 break; 2647 default: 2648 return -EINVAL; 2649 } 2650 2651 return 0; 2652 } 2653 2654 static int get_phy_tunable(struct net_device *dev, void __user *useraddr) 2655 { 2656 struct phy_device *phydev = dev->phydev; 2657 struct ethtool_tunable tuna; 2658 bool phy_drv_tunable; 2659 void *data; 2660 int ret; 2661 2662 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 2663 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) 2664 return -EOPNOTSUPP; 2665 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2666 return -EFAULT; 2667 ret = ethtool_phy_tunable_valid(&tuna); 2668 if (ret) 2669 return ret; 2670 data = kzalloc(tuna.len, GFP_USER); 2671 if (!data) 2672 return -ENOMEM; 2673 if (phy_drv_tunable) { 2674 mutex_lock(&phydev->lock); 2675 ret = phydev->drv->get_tunable(phydev, &tuna, data); 2676 mutex_unlock(&phydev->lock); 2677 } else { 2678 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); 2679 } 2680 if (ret) 2681 goto out; 2682 useraddr += sizeof(tuna); 2683 ret = -EFAULT; 2684 if (copy_to_user(useraddr, data, tuna.len)) 2685 goto out; 2686 ret = 0; 2687 2688 out: 2689 kfree(data); 2690 return ret; 2691 } 2692 2693 static int set_phy_tunable(struct net_device *dev, void __user *useraddr) 2694 { 2695 struct phy_device *phydev = dev->phydev; 2696 struct ethtool_tunable tuna; 2697 bool phy_drv_tunable; 2698 void *data; 2699 int ret; 2700 2701 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 2702 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) 2703 return -EOPNOTSUPP; 2704 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2705 return -EFAULT; 2706 ret = ethtool_phy_tunable_valid(&tuna); 2707 if (ret) 2708 return ret; 2709 useraddr += sizeof(tuna); 2710 data = memdup_user(useraddr, tuna.len); 2711 if (IS_ERR(data)) 2712 return PTR_ERR(data); 2713 if (phy_drv_tunable) { 2714 mutex_lock(&phydev->lock); 2715 ret = phydev->drv->set_tunable(phydev, &tuna, data); 2716 mutex_unlock(&phydev->lock); 2717 } else { 2718 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); 2719 } 2720 2721 kfree(data); 2722 return ret; 2723 } 2724 2725 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) 2726 { 2727 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; 2728 int rc; 2729 2730 if (!dev->ethtool_ops->get_fecparam) 2731 return -EOPNOTSUPP; 2732 2733 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); 2734 if (rc) 2735 return rc; 2736 2737 if (WARN_ON_ONCE(fecparam.reserved)) 2738 fecparam.reserved = 0; 2739 2740 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) 2741 return -EFAULT; 2742 return 0; 2743 } 2744 2745 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) 2746 { 2747 struct ethtool_fecparam fecparam; 2748 2749 if (!dev->ethtool_ops->set_fecparam) 2750 return -EOPNOTSUPP; 2751 2752 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) 2753 return -EFAULT; 2754 2755 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) 2756 return -EINVAL; 2757 2758 fecparam.active_fec = 0; 2759 fecparam.reserved = 0; 2760 2761 return dev->ethtool_ops->set_fecparam(dev, &fecparam); 2762 } 2763 2764 /* The main entry point in this file. Called from net/core/dev_ioctl.c */ 2765 2766 static int 2767 __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, 2768 u32 ethcmd, struct ethtool_devlink_compat *devlink_state) 2769 { 2770 struct net_device *dev; 2771 u32 sub_cmd; 2772 int rc; 2773 netdev_features_t old_features; 2774 2775 dev = __dev_get_by_name(net, ifr->ifr_name); 2776 if (!dev) 2777 return -ENODEV; 2778 2779 if (ethcmd == ETHTOOL_PERQUEUE) { 2780 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) 2781 return -EFAULT; 2782 } else { 2783 sub_cmd = ethcmd; 2784 } 2785 /* Allow some commands to be done by anyone */ 2786 switch (sub_cmd) { 2787 case ETHTOOL_GSET: 2788 case ETHTOOL_GDRVINFO: 2789 case ETHTOOL_GMSGLVL: 2790 case ETHTOOL_GLINK: 2791 case ETHTOOL_GCOALESCE: 2792 case ETHTOOL_GRINGPARAM: 2793 case ETHTOOL_GPAUSEPARAM: 2794 case ETHTOOL_GRXCSUM: 2795 case ETHTOOL_GTXCSUM: 2796 case ETHTOOL_GSG: 2797 case ETHTOOL_GSSET_INFO: 2798 case ETHTOOL_GSTRINGS: 2799 case ETHTOOL_GSTATS: 2800 case ETHTOOL_GPHYSTATS: 2801 case ETHTOOL_GTSO: 2802 case ETHTOOL_GPERMADDR: 2803 case ETHTOOL_GUFO: 2804 case ETHTOOL_GGSO: 2805 case ETHTOOL_GGRO: 2806 case ETHTOOL_GFLAGS: 2807 case ETHTOOL_GPFLAGS: 2808 case ETHTOOL_GRXFH: 2809 case ETHTOOL_GRXRINGS: 2810 case ETHTOOL_GRXCLSRLCNT: 2811 case ETHTOOL_GRXCLSRULE: 2812 case ETHTOOL_GRXCLSRLALL: 2813 case ETHTOOL_GRXFHINDIR: 2814 case ETHTOOL_GRSSH: 2815 case ETHTOOL_GFEATURES: 2816 case ETHTOOL_GCHANNELS: 2817 case ETHTOOL_GET_TS_INFO: 2818 case ETHTOOL_GEEE: 2819 case ETHTOOL_GTUNABLE: 2820 case ETHTOOL_PHY_GTUNABLE: 2821 case ETHTOOL_GLINKSETTINGS: 2822 case ETHTOOL_GFECPARAM: 2823 break; 2824 default: 2825 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 2826 return -EPERM; 2827 } 2828 2829 if (dev->dev.parent) 2830 pm_runtime_get_sync(dev->dev.parent); 2831 2832 if (!netif_device_present(dev)) { 2833 rc = -ENODEV; 2834 goto out; 2835 } 2836 2837 if (dev->ethtool_ops->begin) { 2838 rc = dev->ethtool_ops->begin(dev); 2839 if (rc < 0) 2840 goto out; 2841 } 2842 old_features = dev->features; 2843 2844 switch (ethcmd) { 2845 case ETHTOOL_GSET: 2846 rc = ethtool_get_settings(dev, useraddr); 2847 break; 2848 case ETHTOOL_SSET: 2849 rc = ethtool_set_settings(dev, useraddr); 2850 break; 2851 case ETHTOOL_GDRVINFO: 2852 rc = ethtool_get_drvinfo(dev, devlink_state); 2853 break; 2854 case ETHTOOL_GREGS: 2855 rc = ethtool_get_regs(dev, useraddr); 2856 break; 2857 case ETHTOOL_GWOL: 2858 rc = ethtool_get_wol(dev, useraddr); 2859 break; 2860 case ETHTOOL_SWOL: 2861 rc = ethtool_set_wol(dev, useraddr); 2862 break; 2863 case ETHTOOL_GMSGLVL: 2864 rc = ethtool_get_value(dev, useraddr, ethcmd, 2865 dev->ethtool_ops->get_msglevel); 2866 break; 2867 case ETHTOOL_SMSGLVL: 2868 rc = ethtool_set_value_void(dev, useraddr, 2869 dev->ethtool_ops->set_msglevel); 2870 if (!rc) 2871 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL); 2872 break; 2873 case ETHTOOL_GEEE: 2874 rc = ethtool_get_eee(dev, useraddr); 2875 break; 2876 case ETHTOOL_SEEE: 2877 rc = ethtool_set_eee(dev, useraddr); 2878 break; 2879 case ETHTOOL_NWAY_RST: 2880 rc = ethtool_nway_reset(dev); 2881 break; 2882 case ETHTOOL_GLINK: 2883 rc = ethtool_get_link(dev, useraddr); 2884 break; 2885 case ETHTOOL_GEEPROM: 2886 rc = ethtool_get_eeprom(dev, useraddr); 2887 break; 2888 case ETHTOOL_SEEPROM: 2889 rc = ethtool_set_eeprom(dev, useraddr); 2890 break; 2891 case ETHTOOL_GCOALESCE: 2892 rc = ethtool_get_coalesce(dev, useraddr); 2893 break; 2894 case ETHTOOL_SCOALESCE: 2895 rc = ethtool_set_coalesce(dev, useraddr); 2896 break; 2897 case ETHTOOL_GRINGPARAM: 2898 rc = ethtool_get_ringparam(dev, useraddr); 2899 break; 2900 case ETHTOOL_SRINGPARAM: 2901 rc = ethtool_set_ringparam(dev, useraddr); 2902 break; 2903 case ETHTOOL_GPAUSEPARAM: 2904 rc = ethtool_get_pauseparam(dev, useraddr); 2905 break; 2906 case ETHTOOL_SPAUSEPARAM: 2907 rc = ethtool_set_pauseparam(dev, useraddr); 2908 break; 2909 case ETHTOOL_TEST: 2910 rc = ethtool_self_test(dev, useraddr); 2911 break; 2912 case ETHTOOL_GSTRINGS: 2913 rc = ethtool_get_strings(dev, useraddr); 2914 break; 2915 case ETHTOOL_PHYS_ID: 2916 rc = ethtool_phys_id(dev, useraddr); 2917 break; 2918 case ETHTOOL_GSTATS: 2919 rc = ethtool_get_stats(dev, useraddr); 2920 break; 2921 case ETHTOOL_GPERMADDR: 2922 rc = ethtool_get_perm_addr(dev, useraddr); 2923 break; 2924 case ETHTOOL_GFLAGS: 2925 rc = ethtool_get_value(dev, useraddr, ethcmd, 2926 __ethtool_get_flags); 2927 break; 2928 case ETHTOOL_SFLAGS: 2929 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); 2930 break; 2931 case ETHTOOL_GPFLAGS: 2932 rc = ethtool_get_value(dev, useraddr, ethcmd, 2933 dev->ethtool_ops->get_priv_flags); 2934 if (!rc) 2935 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL); 2936 break; 2937 case ETHTOOL_SPFLAGS: 2938 rc = ethtool_set_value(dev, useraddr, 2939 dev->ethtool_ops->set_priv_flags); 2940 break; 2941 case ETHTOOL_GRXFH: 2942 case ETHTOOL_GRXRINGS: 2943 case ETHTOOL_GRXCLSRLCNT: 2944 case ETHTOOL_GRXCLSRULE: 2945 case ETHTOOL_GRXCLSRLALL: 2946 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); 2947 break; 2948 case ETHTOOL_SRXFH: 2949 case ETHTOOL_SRXCLSRLDEL: 2950 case ETHTOOL_SRXCLSRLINS: 2951 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); 2952 break; 2953 case ETHTOOL_FLASHDEV: 2954 rc = ethtool_flash_device(dev, devlink_state); 2955 break; 2956 case ETHTOOL_RESET: 2957 rc = ethtool_reset(dev, useraddr); 2958 break; 2959 case ETHTOOL_GSSET_INFO: 2960 rc = ethtool_get_sset_info(dev, useraddr); 2961 break; 2962 case ETHTOOL_GRXFHINDIR: 2963 rc = ethtool_get_rxfh_indir(dev, useraddr); 2964 break; 2965 case ETHTOOL_SRXFHINDIR: 2966 rc = ethtool_set_rxfh_indir(dev, useraddr); 2967 break; 2968 case ETHTOOL_GRSSH: 2969 rc = ethtool_get_rxfh(dev, useraddr); 2970 break; 2971 case ETHTOOL_SRSSH: 2972 rc = ethtool_set_rxfh(dev, useraddr); 2973 break; 2974 case ETHTOOL_GFEATURES: 2975 rc = ethtool_get_features(dev, useraddr); 2976 break; 2977 case ETHTOOL_SFEATURES: 2978 rc = ethtool_set_features(dev, useraddr); 2979 break; 2980 case ETHTOOL_GTXCSUM: 2981 case ETHTOOL_GRXCSUM: 2982 case ETHTOOL_GSG: 2983 case ETHTOOL_GTSO: 2984 case ETHTOOL_GGSO: 2985 case ETHTOOL_GGRO: 2986 rc = ethtool_get_one_feature(dev, useraddr, ethcmd); 2987 break; 2988 case ETHTOOL_STXCSUM: 2989 case ETHTOOL_SRXCSUM: 2990 case ETHTOOL_SSG: 2991 case ETHTOOL_STSO: 2992 case ETHTOOL_SGSO: 2993 case ETHTOOL_SGRO: 2994 rc = ethtool_set_one_feature(dev, useraddr, ethcmd); 2995 break; 2996 case ETHTOOL_GCHANNELS: 2997 rc = ethtool_get_channels(dev, useraddr); 2998 break; 2999 case ETHTOOL_SCHANNELS: 3000 rc = ethtool_set_channels(dev, useraddr); 3001 break; 3002 case ETHTOOL_SET_DUMP: 3003 rc = ethtool_set_dump(dev, useraddr); 3004 break; 3005 case ETHTOOL_GET_DUMP_FLAG: 3006 rc = ethtool_get_dump_flag(dev, useraddr); 3007 break; 3008 case ETHTOOL_GET_DUMP_DATA: 3009 rc = ethtool_get_dump_data(dev, useraddr); 3010 break; 3011 case ETHTOOL_GET_TS_INFO: 3012 rc = ethtool_get_ts_info(dev, useraddr); 3013 break; 3014 case ETHTOOL_GMODULEINFO: 3015 rc = ethtool_get_module_info(dev, useraddr); 3016 break; 3017 case ETHTOOL_GMODULEEEPROM: 3018 rc = ethtool_get_module_eeprom(dev, useraddr); 3019 break; 3020 case ETHTOOL_GTUNABLE: 3021 rc = ethtool_get_tunable(dev, useraddr); 3022 break; 3023 case ETHTOOL_STUNABLE: 3024 rc = ethtool_set_tunable(dev, useraddr); 3025 break; 3026 case ETHTOOL_GPHYSTATS: 3027 rc = ethtool_get_phy_stats(dev, useraddr); 3028 break; 3029 case ETHTOOL_PERQUEUE: 3030 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); 3031 break; 3032 case ETHTOOL_GLINKSETTINGS: 3033 rc = ethtool_get_link_ksettings(dev, useraddr); 3034 break; 3035 case ETHTOOL_SLINKSETTINGS: 3036 rc = ethtool_set_link_ksettings(dev, useraddr); 3037 break; 3038 case ETHTOOL_PHY_GTUNABLE: 3039 rc = get_phy_tunable(dev, useraddr); 3040 break; 3041 case ETHTOOL_PHY_STUNABLE: 3042 rc = set_phy_tunable(dev, useraddr); 3043 break; 3044 case ETHTOOL_GFECPARAM: 3045 rc = ethtool_get_fecparam(dev, useraddr); 3046 break; 3047 case ETHTOOL_SFECPARAM: 3048 rc = ethtool_set_fecparam(dev, useraddr); 3049 break; 3050 default: 3051 rc = -EOPNOTSUPP; 3052 } 3053 3054 if (dev->ethtool_ops->complete) 3055 dev->ethtool_ops->complete(dev); 3056 3057 if (old_features != dev->features) 3058 netdev_features_change(dev); 3059 out: 3060 if (dev->dev.parent) 3061 pm_runtime_put(dev->dev.parent); 3062 3063 return rc; 3064 } 3065 3066 int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) 3067 { 3068 struct ethtool_devlink_compat *state; 3069 u32 ethcmd; 3070 int rc; 3071 3072 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) 3073 return -EFAULT; 3074 3075 state = kzalloc(sizeof(*state), GFP_KERNEL); 3076 if (!state) 3077 return -ENOMEM; 3078 3079 switch (ethcmd) { 3080 case ETHTOOL_FLASHDEV: 3081 if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { 3082 rc = -EFAULT; 3083 goto exit_free; 3084 } 3085 state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; 3086 break; 3087 } 3088 3089 rtnl_lock(); 3090 rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); 3091 rtnl_unlock(); 3092 if (rc) 3093 goto exit_free; 3094 3095 switch (ethcmd) { 3096 case ETHTOOL_FLASHDEV: 3097 if (state->devlink) 3098 rc = devlink_compat_flash_update(state->devlink, 3099 state->efl.data); 3100 break; 3101 case ETHTOOL_GDRVINFO: 3102 if (state->devlink) 3103 devlink_compat_running_version(state->devlink, 3104 state->info.fw_version, 3105 sizeof(state->info.fw_version)); 3106 if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { 3107 rc = -EFAULT; 3108 goto exit_free; 3109 } 3110 break; 3111 } 3112 3113 exit_free: 3114 if (state->devlink) 3115 devlink_put(state->devlink); 3116 kfree(state); 3117 return rc; 3118 } 3119 3120 struct ethtool_rx_flow_key { 3121 struct flow_dissector_key_basic basic; 3122 union { 3123 struct flow_dissector_key_ipv4_addrs ipv4; 3124 struct flow_dissector_key_ipv6_addrs ipv6; 3125 }; 3126 struct flow_dissector_key_ports tp; 3127 struct flow_dissector_key_ip ip; 3128 struct flow_dissector_key_vlan vlan; 3129 struct flow_dissector_key_eth_addrs eth_addrs; 3130 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ 3131 3132 struct ethtool_rx_flow_match { 3133 struct flow_dissector dissector; 3134 struct ethtool_rx_flow_key key; 3135 struct ethtool_rx_flow_key mask; 3136 }; 3137 3138 struct ethtool_rx_flow_rule * 3139 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) 3140 { 3141 const struct ethtool_rx_flow_spec *fs = input->fs; 3142 struct ethtool_rx_flow_match *match; 3143 struct ethtool_rx_flow_rule *flow; 3144 struct flow_action_entry *act; 3145 3146 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + 3147 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); 3148 if (!flow) 3149 return ERR_PTR(-ENOMEM); 3150 3151 /* ethtool_rx supports only one single action per rule. */ 3152 flow->rule = flow_rule_alloc(1); 3153 if (!flow->rule) { 3154 kfree(flow); 3155 return ERR_PTR(-ENOMEM); 3156 } 3157 3158 match = (struct ethtool_rx_flow_match *)flow->priv; 3159 flow->rule->match.dissector = &match->dissector; 3160 flow->rule->match.mask = &match->mask; 3161 flow->rule->match.key = &match->key; 3162 3163 match->mask.basic.n_proto = htons(0xffff); 3164 3165 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3166 case ETHER_FLOW: { 3167 const struct ethhdr *ether_spec, *ether_m_spec; 3168 3169 ether_spec = &fs->h_u.ether_spec; 3170 ether_m_spec = &fs->m_u.ether_spec; 3171 3172 if (!is_zero_ether_addr(ether_m_spec->h_source)) { 3173 ether_addr_copy(match->key.eth_addrs.src, 3174 ether_spec->h_source); 3175 ether_addr_copy(match->mask.eth_addrs.src, 3176 ether_m_spec->h_source); 3177 } 3178 if (!is_zero_ether_addr(ether_m_spec->h_dest)) { 3179 ether_addr_copy(match->key.eth_addrs.dst, 3180 ether_spec->h_dest); 3181 ether_addr_copy(match->mask.eth_addrs.dst, 3182 ether_m_spec->h_dest); 3183 } 3184 if (ether_m_spec->h_proto) { 3185 match->key.basic.n_proto = ether_spec->h_proto; 3186 match->mask.basic.n_proto = ether_m_spec->h_proto; 3187 } 3188 } 3189 break; 3190 case TCP_V4_FLOW: 3191 case UDP_V4_FLOW: { 3192 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; 3193 3194 match->key.basic.n_proto = htons(ETH_P_IP); 3195 3196 v4_spec = &fs->h_u.tcp_ip4_spec; 3197 v4_m_spec = &fs->m_u.tcp_ip4_spec; 3198 3199 if (v4_m_spec->ip4src) { 3200 match->key.ipv4.src = v4_spec->ip4src; 3201 match->mask.ipv4.src = v4_m_spec->ip4src; 3202 } 3203 if (v4_m_spec->ip4dst) { 3204 match->key.ipv4.dst = v4_spec->ip4dst; 3205 match->mask.ipv4.dst = v4_m_spec->ip4dst; 3206 } 3207 if (v4_m_spec->ip4src || 3208 v4_m_spec->ip4dst) { 3209 match->dissector.used_keys |= 3210 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS); 3211 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = 3212 offsetof(struct ethtool_rx_flow_key, ipv4); 3213 } 3214 if (v4_m_spec->psrc) { 3215 match->key.tp.src = v4_spec->psrc; 3216 match->mask.tp.src = v4_m_spec->psrc; 3217 } 3218 if (v4_m_spec->pdst) { 3219 match->key.tp.dst = v4_spec->pdst; 3220 match->mask.tp.dst = v4_m_spec->pdst; 3221 } 3222 if (v4_m_spec->psrc || 3223 v4_m_spec->pdst) { 3224 match->dissector.used_keys |= 3225 BIT(FLOW_DISSECTOR_KEY_PORTS); 3226 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3227 offsetof(struct ethtool_rx_flow_key, tp); 3228 } 3229 if (v4_m_spec->tos) { 3230 match->key.ip.tos = v4_spec->tos; 3231 match->mask.ip.tos = v4_m_spec->tos; 3232 match->dissector.used_keys |= 3233 BIT(FLOW_DISSECTOR_KEY_IP); 3234 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3235 offsetof(struct ethtool_rx_flow_key, ip); 3236 } 3237 } 3238 break; 3239 case TCP_V6_FLOW: 3240 case UDP_V6_FLOW: { 3241 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; 3242 3243 match->key.basic.n_proto = htons(ETH_P_IPV6); 3244 3245 v6_spec = &fs->h_u.tcp_ip6_spec; 3246 v6_m_spec = &fs->m_u.tcp_ip6_spec; 3247 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) { 3248 memcpy(&match->key.ipv6.src, v6_spec->ip6src, 3249 sizeof(match->key.ipv6.src)); 3250 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, 3251 sizeof(match->mask.ipv6.src)); 3252 } 3253 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3254 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, 3255 sizeof(match->key.ipv6.dst)); 3256 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, 3257 sizeof(match->mask.ipv6.dst)); 3258 } 3259 if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) || 3260 !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { 3261 match->dissector.used_keys |= 3262 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS); 3263 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = 3264 offsetof(struct ethtool_rx_flow_key, ipv6); 3265 } 3266 if (v6_m_spec->psrc) { 3267 match->key.tp.src = v6_spec->psrc; 3268 match->mask.tp.src = v6_m_spec->psrc; 3269 } 3270 if (v6_m_spec->pdst) { 3271 match->key.tp.dst = v6_spec->pdst; 3272 match->mask.tp.dst = v6_m_spec->pdst; 3273 } 3274 if (v6_m_spec->psrc || 3275 v6_m_spec->pdst) { 3276 match->dissector.used_keys |= 3277 BIT(FLOW_DISSECTOR_KEY_PORTS); 3278 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3279 offsetof(struct ethtool_rx_flow_key, tp); 3280 } 3281 if (v6_m_spec->tclass) { 3282 match->key.ip.tos = v6_spec->tclass; 3283 match->mask.ip.tos = v6_m_spec->tclass; 3284 match->dissector.used_keys |= 3285 BIT(FLOW_DISSECTOR_KEY_IP); 3286 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3287 offsetof(struct ethtool_rx_flow_key, ip); 3288 } 3289 } 3290 break; 3291 default: 3292 ethtool_rx_flow_rule_destroy(flow); 3293 return ERR_PTR(-EINVAL); 3294 } 3295 3296 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3297 case TCP_V4_FLOW: 3298 case TCP_V6_FLOW: 3299 match->key.basic.ip_proto = IPPROTO_TCP; 3300 match->mask.basic.ip_proto = 0xff; 3301 break; 3302 case UDP_V4_FLOW: 3303 case UDP_V6_FLOW: 3304 match->key.basic.ip_proto = IPPROTO_UDP; 3305 match->mask.basic.ip_proto = 0xff; 3306 break; 3307 } 3308 3309 match->dissector.used_keys |= BIT(FLOW_DISSECTOR_KEY_BASIC); 3310 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = 3311 offsetof(struct ethtool_rx_flow_key, basic); 3312 3313 if (fs->flow_type & FLOW_EXT) { 3314 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3315 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3316 3317 if (ext_m_spec->vlan_etype) { 3318 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; 3319 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; 3320 } 3321 3322 if (ext_m_spec->vlan_tci) { 3323 match->key.vlan.vlan_id = 3324 ntohs(ext_h_spec->vlan_tci) & 0x0fff; 3325 match->mask.vlan.vlan_id = 3326 ntohs(ext_m_spec->vlan_tci) & 0x0fff; 3327 3328 match->key.vlan.vlan_dei = 3329 !!(ext_h_spec->vlan_tci & htons(0x1000)); 3330 match->mask.vlan.vlan_dei = 3331 !!(ext_m_spec->vlan_tci & htons(0x1000)); 3332 3333 match->key.vlan.vlan_priority = 3334 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; 3335 match->mask.vlan.vlan_priority = 3336 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; 3337 } 3338 3339 if (ext_m_spec->vlan_etype || 3340 ext_m_spec->vlan_tci) { 3341 match->dissector.used_keys |= 3342 BIT(FLOW_DISSECTOR_KEY_VLAN); 3343 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = 3344 offsetof(struct ethtool_rx_flow_key, vlan); 3345 } 3346 } 3347 if (fs->flow_type & FLOW_MAC_EXT) { 3348 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3349 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3350 3351 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, 3352 ETH_ALEN); 3353 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, 3354 ETH_ALEN); 3355 3356 match->dissector.used_keys |= 3357 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS); 3358 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = 3359 offsetof(struct ethtool_rx_flow_key, eth_addrs); 3360 } 3361 3362 act = &flow->rule->action.entries[0]; 3363 switch (fs->ring_cookie) { 3364 case RX_CLS_FLOW_DISC: 3365 act->id = FLOW_ACTION_DROP; 3366 break; 3367 case RX_CLS_FLOW_WAKE: 3368 act->id = FLOW_ACTION_WAKE; 3369 break; 3370 default: 3371 act->id = FLOW_ACTION_QUEUE; 3372 if (fs->flow_type & FLOW_RSS) 3373 act->queue.ctx = input->rss_ctx; 3374 3375 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); 3376 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); 3377 break; 3378 } 3379 3380 return flow; 3381 } 3382 EXPORT_SYMBOL(ethtool_rx_flow_rule_create); 3383 3384 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) 3385 { 3386 kfree(flow->rule); 3387 kfree(flow); 3388 } 3389 EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); 3390