1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * net/core/ethtool.c - Ethtool ioctl handler 4 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx> 5 * 6 * This file is where we call all the ethtool_ops commands to get 7 * the information ethtool needs. 8 */ 9 10 #include <linux/compat.h> 11 #include <linux/module.h> 12 #include <linux/types.h> 13 #include <linux/capability.h> 14 #include <linux/errno.h> 15 #include <linux/ethtool.h> 16 #include <linux/netdevice.h> 17 #include <linux/net_tstamp.h> 18 #include <linux/phy.h> 19 #include <linux/bitops.h> 20 #include <linux/uaccess.h> 21 #include <linux/vmalloc.h> 22 #include <linux/sfp.h> 23 #include <linux/slab.h> 24 #include <linux/rtnetlink.h> 25 #include <linux/sched/signal.h> 26 #include <linux/net.h> 27 #include <linux/pm_runtime.h> 28 #include <net/devlink.h> 29 #include <net/xdp_sock_drv.h> 30 #include <net/flow_offload.h> 31 #include <linux/ethtool_netlink.h> 32 #include <generated/utsrelease.h> 33 #include "common.h" 34 35 /* State held across locks and calls for commands which have devlink fallback */ 36 struct ethtool_devlink_compat { 37 struct devlink *devlink; 38 union { 39 struct ethtool_flash efl; 40 struct ethtool_drvinfo info; 41 }; 42 }; 43 44 static struct devlink *netdev_to_devlink_get(struct net_device *dev) 45 { 46 struct devlink_port *devlink_port; 47 48 if (!dev->netdev_ops->ndo_get_devlink_port) 49 return NULL; 50 51 devlink_port = dev->netdev_ops->ndo_get_devlink_port(dev); 52 if (!devlink_port) 53 return NULL; 54 55 return devlink_try_get(devlink_port->devlink); 56 } 57 58 /* 59 * Some useful ethtool_ops methods that're device independent. 60 * If we find that all drivers want to do the same thing here, 61 * we can turn these into dev_() function calls. 62 */ 63 64 u32 ethtool_op_get_link(struct net_device *dev) 65 { 66 return netif_carrier_ok(dev) ? 1 : 0; 67 } 68 EXPORT_SYMBOL(ethtool_op_get_link); 69 70 int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info) 71 { 72 info->so_timestamping = 73 SOF_TIMESTAMPING_TX_SOFTWARE | 74 SOF_TIMESTAMPING_RX_SOFTWARE | 75 SOF_TIMESTAMPING_SOFTWARE; 76 info->phc_index = -1; 77 return 0; 78 } 79 EXPORT_SYMBOL(ethtool_op_get_ts_info); 80 81 /* Handlers for each ethtool command */ 82 83 static int ethtool_get_features(struct net_device *dev, void __user *useraddr) 84 { 85 struct ethtool_gfeatures cmd = { 86 .cmd = ETHTOOL_GFEATURES, 87 .size = ETHTOOL_DEV_FEATURE_WORDS, 88 }; 89 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 90 u32 __user *sizeaddr; 91 u32 copy_size; 92 int i; 93 94 /* in case feature bits run out again */ 95 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); 96 97 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 98 features[i].available = (u32)(dev->hw_features >> (32 * i)); 99 features[i].requested = (u32)(dev->wanted_features >> (32 * i)); 100 features[i].active = (u32)(dev->features >> (32 * i)); 101 features[i].never_changed = 102 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); 103 } 104 105 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); 106 if (get_user(copy_size, sizeaddr)) 107 return -EFAULT; 108 109 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) 110 copy_size = ETHTOOL_DEV_FEATURE_WORDS; 111 112 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 113 return -EFAULT; 114 useraddr += sizeof(cmd); 115 if (copy_to_user(useraddr, features, 116 array_size(copy_size, sizeof(*features)))) 117 return -EFAULT; 118 119 return 0; 120 } 121 122 static int ethtool_set_features(struct net_device *dev, void __user *useraddr) 123 { 124 struct ethtool_sfeatures cmd; 125 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 126 netdev_features_t wanted = 0, valid = 0; 127 int i, ret = 0; 128 129 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 130 return -EFAULT; 131 useraddr += sizeof(cmd); 132 133 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) 134 return -EINVAL; 135 136 if (copy_from_user(features, useraddr, sizeof(features))) 137 return -EFAULT; 138 139 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 140 valid |= (netdev_features_t)features[i].valid << (32 * i); 141 wanted |= (netdev_features_t)features[i].requested << (32 * i); 142 } 143 144 if (valid & ~NETIF_F_ETHTOOL_BITS) 145 return -EINVAL; 146 147 if (valid & ~dev->hw_features) { 148 valid &= dev->hw_features; 149 ret |= ETHTOOL_F_UNSUPPORTED; 150 } 151 152 dev->wanted_features &= ~valid; 153 dev->wanted_features |= wanted & valid; 154 __netdev_update_features(dev); 155 156 if ((dev->wanted_features ^ dev->features) & valid) 157 ret |= ETHTOOL_F_WISH; 158 159 return ret; 160 } 161 162 static int __ethtool_get_sset_count(struct net_device *dev, int sset) 163 { 164 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 165 const struct ethtool_ops *ops = dev->ethtool_ops; 166 167 if (sset == ETH_SS_FEATURES) 168 return ARRAY_SIZE(netdev_features_strings); 169 170 if (sset == ETH_SS_RSS_HASH_FUNCS) 171 return ARRAY_SIZE(rss_hash_func_strings); 172 173 if (sset == ETH_SS_TUNABLES) 174 return ARRAY_SIZE(tunable_strings); 175 176 if (sset == ETH_SS_PHY_TUNABLES) 177 return ARRAY_SIZE(phy_tunable_strings); 178 179 if (sset == ETH_SS_PHY_STATS && dev->phydev && 180 !ops->get_ethtool_phy_stats && 181 phy_ops && phy_ops->get_sset_count) 182 return phy_ops->get_sset_count(dev->phydev); 183 184 if (sset == ETH_SS_LINK_MODES) 185 return __ETHTOOL_LINK_MODE_MASK_NBITS; 186 187 if (ops->get_sset_count && ops->get_strings) 188 return ops->get_sset_count(dev, sset); 189 else 190 return -EOPNOTSUPP; 191 } 192 193 static void __ethtool_get_strings(struct net_device *dev, 194 u32 stringset, u8 *data) 195 { 196 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 197 const struct ethtool_ops *ops = dev->ethtool_ops; 198 199 if (stringset == ETH_SS_FEATURES) 200 memcpy(data, netdev_features_strings, 201 sizeof(netdev_features_strings)); 202 else if (stringset == ETH_SS_RSS_HASH_FUNCS) 203 memcpy(data, rss_hash_func_strings, 204 sizeof(rss_hash_func_strings)); 205 else if (stringset == ETH_SS_TUNABLES) 206 memcpy(data, tunable_strings, sizeof(tunable_strings)); 207 else if (stringset == ETH_SS_PHY_TUNABLES) 208 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); 209 else if (stringset == ETH_SS_PHY_STATS && dev->phydev && 210 !ops->get_ethtool_phy_stats && phy_ops && 211 phy_ops->get_strings) 212 phy_ops->get_strings(dev->phydev, data); 213 else if (stringset == ETH_SS_LINK_MODES) 214 memcpy(data, link_mode_names, 215 __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN); 216 else 217 /* ops->get_strings is valid because checked earlier */ 218 ops->get_strings(dev, stringset, data); 219 } 220 221 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) 222 { 223 /* feature masks of legacy discrete ethtool ops */ 224 225 switch (eth_cmd) { 226 case ETHTOOL_GTXCSUM: 227 case ETHTOOL_STXCSUM: 228 return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC | 229 NETIF_F_SCTP_CRC; 230 case ETHTOOL_GRXCSUM: 231 case ETHTOOL_SRXCSUM: 232 return NETIF_F_RXCSUM; 233 case ETHTOOL_GSG: 234 case ETHTOOL_SSG: 235 return NETIF_F_SG | NETIF_F_FRAGLIST; 236 case ETHTOOL_GTSO: 237 case ETHTOOL_STSO: 238 return NETIF_F_ALL_TSO; 239 case ETHTOOL_GGSO: 240 case ETHTOOL_SGSO: 241 return NETIF_F_GSO; 242 case ETHTOOL_GGRO: 243 case ETHTOOL_SGRO: 244 return NETIF_F_GRO; 245 default: 246 BUG(); 247 } 248 } 249 250 static int ethtool_get_one_feature(struct net_device *dev, 251 char __user *useraddr, u32 ethcmd) 252 { 253 netdev_features_t mask = ethtool_get_feature_mask(ethcmd); 254 struct ethtool_value edata = { 255 .cmd = ethcmd, 256 .data = !!(dev->features & mask), 257 }; 258 259 if (copy_to_user(useraddr, &edata, sizeof(edata))) 260 return -EFAULT; 261 return 0; 262 } 263 264 static int ethtool_set_one_feature(struct net_device *dev, 265 void __user *useraddr, u32 ethcmd) 266 { 267 struct ethtool_value edata; 268 netdev_features_t mask; 269 270 if (copy_from_user(&edata, useraddr, sizeof(edata))) 271 return -EFAULT; 272 273 mask = ethtool_get_feature_mask(ethcmd); 274 mask &= dev->hw_features; 275 if (!mask) 276 return -EOPNOTSUPP; 277 278 if (edata.data) 279 dev->wanted_features |= mask; 280 else 281 dev->wanted_features &= ~mask; 282 283 __netdev_update_features(dev); 284 285 return 0; 286 } 287 288 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ 289 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) 290 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ 291 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ 292 NETIF_F_RXHASH) 293 294 static u32 __ethtool_get_flags(struct net_device *dev) 295 { 296 u32 flags = 0; 297 298 if (dev->features & NETIF_F_LRO) 299 flags |= ETH_FLAG_LRO; 300 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 301 flags |= ETH_FLAG_RXVLAN; 302 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) 303 flags |= ETH_FLAG_TXVLAN; 304 if (dev->features & NETIF_F_NTUPLE) 305 flags |= ETH_FLAG_NTUPLE; 306 if (dev->features & NETIF_F_RXHASH) 307 flags |= ETH_FLAG_RXHASH; 308 309 return flags; 310 } 311 312 static int __ethtool_set_flags(struct net_device *dev, u32 data) 313 { 314 netdev_features_t features = 0, changed; 315 316 if (data & ~ETH_ALL_FLAGS) 317 return -EINVAL; 318 319 if (data & ETH_FLAG_LRO) 320 features |= NETIF_F_LRO; 321 if (data & ETH_FLAG_RXVLAN) 322 features |= NETIF_F_HW_VLAN_CTAG_RX; 323 if (data & ETH_FLAG_TXVLAN) 324 features |= NETIF_F_HW_VLAN_CTAG_TX; 325 if (data & ETH_FLAG_NTUPLE) 326 features |= NETIF_F_NTUPLE; 327 if (data & ETH_FLAG_RXHASH) 328 features |= NETIF_F_RXHASH; 329 330 /* allow changing only bits set in hw_features */ 331 changed = (features ^ dev->features) & ETH_ALL_FEATURES; 332 if (changed & ~dev->hw_features) 333 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; 334 335 dev->wanted_features = 336 (dev->wanted_features & ~changed) | (features & changed); 337 338 __netdev_update_features(dev); 339 340 return 0; 341 } 342 343 /* Given two link masks, AND them together and save the result in dst. */ 344 void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, 345 struct ethtool_link_ksettings *src) 346 { 347 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); 348 unsigned int idx = 0; 349 350 for (; idx < size; idx++) { 351 dst->link_modes.supported[idx] &= 352 src->link_modes.supported[idx]; 353 dst->link_modes.advertising[idx] &= 354 src->link_modes.advertising[idx]; 355 } 356 } 357 EXPORT_SYMBOL(ethtool_intersect_link_masks); 358 359 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, 360 u32 legacy_u32) 361 { 362 linkmode_zero(dst); 363 dst[0] = legacy_u32; 364 } 365 EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); 366 367 /* return false if src had higher bits set. lower bits always updated. */ 368 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, 369 const unsigned long *src) 370 { 371 bool retval = true; 372 373 /* TODO: following test will soon always be true */ 374 if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) { 375 __ETHTOOL_DECLARE_LINK_MODE_MASK(ext); 376 377 linkmode_zero(ext); 378 bitmap_fill(ext, 32); 379 bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS); 380 if (linkmode_intersects(ext, src)) { 381 /* src mask goes beyond bit 31 */ 382 retval = false; 383 } 384 } 385 *legacy_u32 = src[0]; 386 return retval; 387 } 388 EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); 389 390 /* return false if ksettings link modes had higher bits 391 * set. legacy_settings always updated (best effort) 392 */ 393 static bool 394 convert_link_ksettings_to_legacy_settings( 395 struct ethtool_cmd *legacy_settings, 396 const struct ethtool_link_ksettings *link_ksettings) 397 { 398 bool retval = true; 399 400 memset(legacy_settings, 0, sizeof(*legacy_settings)); 401 /* this also clears the deprecated fields in legacy structure: 402 * __u8 transceiver; 403 * __u32 maxtxpkt; 404 * __u32 maxrxpkt; 405 */ 406 407 retval &= ethtool_convert_link_mode_to_legacy_u32( 408 &legacy_settings->supported, 409 link_ksettings->link_modes.supported); 410 retval &= ethtool_convert_link_mode_to_legacy_u32( 411 &legacy_settings->advertising, 412 link_ksettings->link_modes.advertising); 413 retval &= ethtool_convert_link_mode_to_legacy_u32( 414 &legacy_settings->lp_advertising, 415 link_ksettings->link_modes.lp_advertising); 416 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); 417 legacy_settings->duplex 418 = link_ksettings->base.duplex; 419 legacy_settings->port 420 = link_ksettings->base.port; 421 legacy_settings->phy_address 422 = link_ksettings->base.phy_address; 423 legacy_settings->autoneg 424 = link_ksettings->base.autoneg; 425 legacy_settings->mdio_support 426 = link_ksettings->base.mdio_support; 427 legacy_settings->eth_tp_mdix 428 = link_ksettings->base.eth_tp_mdix; 429 legacy_settings->eth_tp_mdix_ctrl 430 = link_ksettings->base.eth_tp_mdix_ctrl; 431 legacy_settings->transceiver 432 = link_ksettings->base.transceiver; 433 return retval; 434 } 435 436 /* number of 32-bit words to store the user's link mode bitmaps */ 437 #define __ETHTOOL_LINK_MODE_MASK_NU32 \ 438 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) 439 440 /* layout of the struct passed from/to userland */ 441 struct ethtool_link_usettings { 442 struct ethtool_link_settings base; 443 struct { 444 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; 445 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 446 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 447 } link_modes; 448 }; 449 450 /* Internal kernel helper to query a device ethtool_link_settings. */ 451 int __ethtool_get_link_ksettings(struct net_device *dev, 452 struct ethtool_link_ksettings *link_ksettings) 453 { 454 ASSERT_RTNL(); 455 456 if (!dev->ethtool_ops->get_link_ksettings) 457 return -EOPNOTSUPP; 458 459 memset(link_ksettings, 0, sizeof(*link_ksettings)); 460 return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings); 461 } 462 EXPORT_SYMBOL(__ethtool_get_link_ksettings); 463 464 /* convert ethtool_link_usettings in user space to a kernel internal 465 * ethtool_link_ksettings. return 0 on success, errno on error. 466 */ 467 static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, 468 const void __user *from) 469 { 470 struct ethtool_link_usettings link_usettings; 471 472 if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) 473 return -EFAULT; 474 475 memcpy(&to->base, &link_usettings.base, sizeof(to->base)); 476 bitmap_from_arr32(to->link_modes.supported, 477 link_usettings.link_modes.supported, 478 __ETHTOOL_LINK_MODE_MASK_NBITS); 479 bitmap_from_arr32(to->link_modes.advertising, 480 link_usettings.link_modes.advertising, 481 __ETHTOOL_LINK_MODE_MASK_NBITS); 482 bitmap_from_arr32(to->link_modes.lp_advertising, 483 link_usettings.link_modes.lp_advertising, 484 __ETHTOOL_LINK_MODE_MASK_NBITS); 485 486 return 0; 487 } 488 489 /* Check if the user is trying to change anything besides speed/duplex */ 490 bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd) 491 { 492 struct ethtool_link_settings base2 = {}; 493 494 base2.speed = cmd->base.speed; 495 base2.port = PORT_OTHER; 496 base2.duplex = cmd->base.duplex; 497 base2.cmd = cmd->base.cmd; 498 base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords; 499 500 return !memcmp(&base2, &cmd->base, sizeof(base2)) && 501 bitmap_empty(cmd->link_modes.supported, 502 __ETHTOOL_LINK_MODE_MASK_NBITS) && 503 bitmap_empty(cmd->link_modes.lp_advertising, 504 __ETHTOOL_LINK_MODE_MASK_NBITS); 505 } 506 507 /* convert a kernel internal ethtool_link_ksettings to 508 * ethtool_link_usettings in user space. return 0 on success, errno on 509 * error. 510 */ 511 static int 512 store_link_ksettings_for_user(void __user *to, 513 const struct ethtool_link_ksettings *from) 514 { 515 struct ethtool_link_usettings link_usettings; 516 517 memcpy(&link_usettings, from, sizeof(link_usettings)); 518 bitmap_to_arr32(link_usettings.link_modes.supported, 519 from->link_modes.supported, 520 __ETHTOOL_LINK_MODE_MASK_NBITS); 521 bitmap_to_arr32(link_usettings.link_modes.advertising, 522 from->link_modes.advertising, 523 __ETHTOOL_LINK_MODE_MASK_NBITS); 524 bitmap_to_arr32(link_usettings.link_modes.lp_advertising, 525 from->link_modes.lp_advertising, 526 __ETHTOOL_LINK_MODE_MASK_NBITS); 527 528 if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) 529 return -EFAULT; 530 531 return 0; 532 } 533 534 /* Query device for its ethtool_link_settings. */ 535 static int ethtool_get_link_ksettings(struct net_device *dev, 536 void __user *useraddr) 537 { 538 int err = 0; 539 struct ethtool_link_ksettings link_ksettings; 540 541 ASSERT_RTNL(); 542 if (!dev->ethtool_ops->get_link_ksettings) 543 return -EOPNOTSUPP; 544 545 /* handle bitmap nbits handshake */ 546 if (copy_from_user(&link_ksettings.base, useraddr, 547 sizeof(link_ksettings.base))) 548 return -EFAULT; 549 550 if (__ETHTOOL_LINK_MODE_MASK_NU32 551 != link_ksettings.base.link_mode_masks_nwords) { 552 /* wrong link mode nbits requested */ 553 memset(&link_ksettings, 0, sizeof(link_ksettings)); 554 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 555 /* send back number of words required as negative val */ 556 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, 557 "need too many bits for link modes!"); 558 link_ksettings.base.link_mode_masks_nwords 559 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); 560 561 /* copy the base fields back to user, not the link 562 * mode bitmaps 563 */ 564 if (copy_to_user(useraddr, &link_ksettings.base, 565 sizeof(link_ksettings.base))) 566 return -EFAULT; 567 568 return 0; 569 } 570 571 /* handshake successful: user/kernel agree on 572 * link_mode_masks_nwords 573 */ 574 575 memset(&link_ksettings, 0, sizeof(link_ksettings)); 576 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 577 if (err < 0) 578 return err; 579 580 /* make sure we tell the right values to user */ 581 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 582 link_ksettings.base.link_mode_masks_nwords 583 = __ETHTOOL_LINK_MODE_MASK_NU32; 584 link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED; 585 link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED; 586 587 return store_link_ksettings_for_user(useraddr, &link_ksettings); 588 } 589 590 /* Update device ethtool_link_settings. */ 591 static int ethtool_set_link_ksettings(struct net_device *dev, 592 void __user *useraddr) 593 { 594 int err; 595 struct ethtool_link_ksettings link_ksettings; 596 597 ASSERT_RTNL(); 598 599 if (!dev->ethtool_ops->set_link_ksettings) 600 return -EOPNOTSUPP; 601 602 /* make sure nbits field has expected value */ 603 if (copy_from_user(&link_ksettings.base, useraddr, 604 sizeof(link_ksettings.base))) 605 return -EFAULT; 606 607 if (__ETHTOOL_LINK_MODE_MASK_NU32 608 != link_ksettings.base.link_mode_masks_nwords) 609 return -EINVAL; 610 611 /* copy the whole structure, now that we know it has expected 612 * format 613 */ 614 err = load_link_ksettings_from_user(&link_ksettings, useraddr); 615 if (err) 616 return err; 617 618 /* re-check nwords field, just in case */ 619 if (__ETHTOOL_LINK_MODE_MASK_NU32 620 != link_ksettings.base.link_mode_masks_nwords) 621 return -EINVAL; 622 623 if (link_ksettings.base.master_slave_cfg || 624 link_ksettings.base.master_slave_state) 625 return -EINVAL; 626 627 err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 628 if (err >= 0) { 629 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); 630 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); 631 } 632 return err; 633 } 634 635 int ethtool_virtdev_set_link_ksettings(struct net_device *dev, 636 const struct ethtool_link_ksettings *cmd, 637 u32 *dev_speed, u8 *dev_duplex) 638 { 639 u32 speed; 640 u8 duplex; 641 642 speed = cmd->base.speed; 643 duplex = cmd->base.duplex; 644 /* don't allow custom speed and duplex */ 645 if (!ethtool_validate_speed(speed) || 646 !ethtool_validate_duplex(duplex) || 647 !ethtool_virtdev_validate_cmd(cmd)) 648 return -EINVAL; 649 *dev_speed = speed; 650 *dev_duplex = duplex; 651 652 return 0; 653 } 654 EXPORT_SYMBOL(ethtool_virtdev_set_link_ksettings); 655 656 /* Query device for its ethtool_cmd settings. 657 * 658 * Backward compatibility note: for compatibility with legacy ethtool, this is 659 * now implemented via get_link_ksettings. When driver reports higher link mode 660 * bits, a kernel warning is logged once (with name of 1st driver/device) to 661 * recommend user to upgrade ethtool, but the command is successful (only the 662 * lower link mode bits reported back to user). Deprecated fields from 663 * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero. 664 */ 665 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) 666 { 667 struct ethtool_link_ksettings link_ksettings; 668 struct ethtool_cmd cmd; 669 int err; 670 671 ASSERT_RTNL(); 672 if (!dev->ethtool_ops->get_link_ksettings) 673 return -EOPNOTSUPP; 674 675 memset(&link_ksettings, 0, sizeof(link_ksettings)); 676 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 677 if (err < 0) 678 return err; 679 convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings); 680 681 /* send a sensible cmd tag back to user */ 682 cmd.cmd = ETHTOOL_GSET; 683 684 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 685 return -EFAULT; 686 687 return 0; 688 } 689 690 /* Update device link settings with given ethtool_cmd. 691 * 692 * Backward compatibility note: for compatibility with legacy ethtool, this is 693 * now always implemented via set_link_settings. When user's request updates 694 * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel 695 * warning is logged once (with name of 1st driver/device) to recommend user to 696 * upgrade ethtool, and the request is rejected. 697 */ 698 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) 699 { 700 struct ethtool_link_ksettings link_ksettings; 701 struct ethtool_cmd cmd; 702 int ret; 703 704 ASSERT_RTNL(); 705 706 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 707 return -EFAULT; 708 if (!dev->ethtool_ops->set_link_ksettings) 709 return -EOPNOTSUPP; 710 711 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd)) 712 return -EINVAL; 713 link_ksettings.base.link_mode_masks_nwords = 714 __ETHTOOL_LINK_MODE_MASK_NU32; 715 ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 716 if (ret >= 0) { 717 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); 718 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); 719 } 720 return ret; 721 } 722 723 static int 724 ethtool_get_drvinfo(struct net_device *dev, struct ethtool_devlink_compat *rsp) 725 { 726 const struct ethtool_ops *ops = dev->ethtool_ops; 727 728 rsp->info.cmd = ETHTOOL_GDRVINFO; 729 strlcpy(rsp->info.version, UTS_RELEASE, sizeof(rsp->info.version)); 730 if (ops->get_drvinfo) { 731 ops->get_drvinfo(dev, &rsp->info); 732 } else if (dev->dev.parent && dev->dev.parent->driver) { 733 strlcpy(rsp->info.bus_info, dev_name(dev->dev.parent), 734 sizeof(rsp->info.bus_info)); 735 strlcpy(rsp->info.driver, dev->dev.parent->driver->name, 736 sizeof(rsp->info.driver)); 737 } else { 738 return -EOPNOTSUPP; 739 } 740 741 /* 742 * this method of obtaining string set info is deprecated; 743 * Use ETHTOOL_GSSET_INFO instead. 744 */ 745 if (ops->get_sset_count) { 746 int rc; 747 748 rc = ops->get_sset_count(dev, ETH_SS_TEST); 749 if (rc >= 0) 750 rsp->info.testinfo_len = rc; 751 rc = ops->get_sset_count(dev, ETH_SS_STATS); 752 if (rc >= 0) 753 rsp->info.n_stats = rc; 754 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); 755 if (rc >= 0) 756 rsp->info.n_priv_flags = rc; 757 } 758 if (ops->get_regs_len) { 759 int ret = ops->get_regs_len(dev); 760 761 if (ret > 0) 762 rsp->info.regdump_len = ret; 763 } 764 765 if (ops->get_eeprom_len) 766 rsp->info.eedump_len = ops->get_eeprom_len(dev); 767 768 if (!rsp->info.fw_version[0]) 769 rsp->devlink = netdev_to_devlink_get(dev); 770 771 return 0; 772 } 773 774 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, 775 void __user *useraddr) 776 { 777 struct ethtool_sset_info info; 778 u64 sset_mask; 779 int i, idx = 0, n_bits = 0, ret, rc; 780 u32 *info_buf = NULL; 781 782 if (copy_from_user(&info, useraddr, sizeof(info))) 783 return -EFAULT; 784 785 /* store copy of mask, because we zero struct later on */ 786 sset_mask = info.sset_mask; 787 if (!sset_mask) 788 return 0; 789 790 /* calculate size of return buffer */ 791 n_bits = hweight64(sset_mask); 792 793 memset(&info, 0, sizeof(info)); 794 info.cmd = ETHTOOL_GSSET_INFO; 795 796 info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER); 797 if (!info_buf) 798 return -ENOMEM; 799 800 /* 801 * fill return buffer based on input bitmask and successful 802 * get_sset_count return 803 */ 804 for (i = 0; i < 64; i++) { 805 if (!(sset_mask & (1ULL << i))) 806 continue; 807 808 rc = __ethtool_get_sset_count(dev, i); 809 if (rc >= 0) { 810 info.sset_mask |= (1ULL << i); 811 info_buf[idx++] = rc; 812 } 813 } 814 815 ret = -EFAULT; 816 if (copy_to_user(useraddr, &info, sizeof(info))) 817 goto out; 818 819 useraddr += offsetof(struct ethtool_sset_info, data); 820 if (copy_to_user(useraddr, info_buf, array_size(idx, sizeof(u32)))) 821 goto out; 822 823 ret = 0; 824 825 out: 826 kfree(info_buf); 827 return ret; 828 } 829 830 static noinline_for_stack int 831 ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc, 832 const struct compat_ethtool_rxnfc __user *useraddr, 833 size_t size) 834 { 835 struct compat_ethtool_rxnfc crxnfc = {}; 836 837 /* We expect there to be holes between fs.m_ext and 838 * fs.ring_cookie and at the end of fs, but nowhere else. 839 * On non-x86, no conversion should be needed. 840 */ 841 BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) && 842 sizeof(struct compat_ethtool_rxnfc) != 843 sizeof(struct ethtool_rxnfc)); 844 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) + 845 sizeof(useraddr->fs.m_ext) != 846 offsetof(struct ethtool_rxnfc, fs.m_ext) + 847 sizeof(rxnfc->fs.m_ext)); 848 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) - 849 offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) != 850 offsetof(struct ethtool_rxnfc, fs.location) - 851 offsetof(struct ethtool_rxnfc, fs.ring_cookie)); 852 853 if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc)))) 854 return -EFAULT; 855 856 *rxnfc = (struct ethtool_rxnfc) { 857 .cmd = crxnfc.cmd, 858 .flow_type = crxnfc.flow_type, 859 .data = crxnfc.data, 860 .fs = { 861 .flow_type = crxnfc.fs.flow_type, 862 .h_u = crxnfc.fs.h_u, 863 .h_ext = crxnfc.fs.h_ext, 864 .m_u = crxnfc.fs.m_u, 865 .m_ext = crxnfc.fs.m_ext, 866 .ring_cookie = crxnfc.fs.ring_cookie, 867 .location = crxnfc.fs.location, 868 }, 869 .rule_cnt = crxnfc.rule_cnt, 870 }; 871 872 return 0; 873 } 874 875 static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc, 876 const void __user *useraddr, 877 size_t size) 878 { 879 if (compat_need_64bit_alignment_fixup()) 880 return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size); 881 882 if (copy_from_user(rxnfc, useraddr, size)) 883 return -EFAULT; 884 885 return 0; 886 } 887 888 static int ethtool_rxnfc_copy_to_compat(void __user *useraddr, 889 const struct ethtool_rxnfc *rxnfc, 890 size_t size, const u32 *rule_buf) 891 { 892 struct compat_ethtool_rxnfc crxnfc; 893 894 memset(&crxnfc, 0, sizeof(crxnfc)); 895 crxnfc = (struct compat_ethtool_rxnfc) { 896 .cmd = rxnfc->cmd, 897 .flow_type = rxnfc->flow_type, 898 .data = rxnfc->data, 899 .fs = { 900 .flow_type = rxnfc->fs.flow_type, 901 .h_u = rxnfc->fs.h_u, 902 .h_ext = rxnfc->fs.h_ext, 903 .m_u = rxnfc->fs.m_u, 904 .m_ext = rxnfc->fs.m_ext, 905 .ring_cookie = rxnfc->fs.ring_cookie, 906 .location = rxnfc->fs.location, 907 }, 908 .rule_cnt = rxnfc->rule_cnt, 909 }; 910 911 if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc)))) 912 return -EFAULT; 913 914 return 0; 915 } 916 917 static int ethtool_rxnfc_copy_to_user(void __user *useraddr, 918 const struct ethtool_rxnfc *rxnfc, 919 size_t size, const u32 *rule_buf) 920 { 921 int ret; 922 923 if (compat_need_64bit_alignment_fixup()) { 924 ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size, 925 rule_buf); 926 useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs); 927 } else { 928 ret = copy_to_user(useraddr, rxnfc, size); 929 useraddr += offsetof(struct ethtool_rxnfc, rule_locs); 930 } 931 932 if (ret) 933 return -EFAULT; 934 935 if (rule_buf) { 936 if (copy_to_user(useraddr, rule_buf, 937 rxnfc->rule_cnt * sizeof(u32))) 938 return -EFAULT; 939 } 940 941 return 0; 942 } 943 944 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, 945 u32 cmd, void __user *useraddr) 946 { 947 struct ethtool_rxnfc info; 948 size_t info_size = sizeof(info); 949 int rc; 950 951 if (!dev->ethtool_ops->set_rxnfc) 952 return -EOPNOTSUPP; 953 954 /* struct ethtool_rxnfc was originally defined for 955 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 956 * members. User-space might still be using that 957 * definition. */ 958 if (cmd == ETHTOOL_SRXFH) 959 info_size = (offsetof(struct ethtool_rxnfc, data) + 960 sizeof(info.data)); 961 962 if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size)) 963 return -EFAULT; 964 965 rc = dev->ethtool_ops->set_rxnfc(dev, &info); 966 if (rc) 967 return rc; 968 969 if (cmd == ETHTOOL_SRXCLSRLINS && 970 ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL)) 971 return -EFAULT; 972 973 return 0; 974 } 975 976 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, 977 u32 cmd, void __user *useraddr) 978 { 979 struct ethtool_rxnfc info; 980 size_t info_size = sizeof(info); 981 const struct ethtool_ops *ops = dev->ethtool_ops; 982 int ret; 983 void *rule_buf = NULL; 984 985 if (!ops->get_rxnfc) 986 return -EOPNOTSUPP; 987 988 /* struct ethtool_rxnfc was originally defined for 989 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 990 * members. User-space might still be using that 991 * definition. */ 992 if (cmd == ETHTOOL_GRXFH) 993 info_size = (offsetof(struct ethtool_rxnfc, data) + 994 sizeof(info.data)); 995 996 if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size)) 997 return -EFAULT; 998 999 /* If FLOW_RSS was requested then user-space must be using the 1000 * new definition, as FLOW_RSS is newer. 1001 */ 1002 if (cmd == ETHTOOL_GRXFH && info.flow_type & FLOW_RSS) { 1003 info_size = sizeof(info); 1004 if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size)) 1005 return -EFAULT; 1006 /* Since malicious users may modify the original data, 1007 * we need to check whether FLOW_RSS is still requested. 1008 */ 1009 if (!(info.flow_type & FLOW_RSS)) 1010 return -EINVAL; 1011 } 1012 1013 if (info.cmd != cmd) 1014 return -EINVAL; 1015 1016 if (info.cmd == ETHTOOL_GRXCLSRLALL) { 1017 if (info.rule_cnt > 0) { 1018 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) 1019 rule_buf = kcalloc(info.rule_cnt, sizeof(u32), 1020 GFP_USER); 1021 if (!rule_buf) 1022 return -ENOMEM; 1023 } 1024 } 1025 1026 ret = ops->get_rxnfc(dev, &info, rule_buf); 1027 if (ret < 0) 1028 goto err_out; 1029 1030 ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf); 1031 err_out: 1032 kfree(rule_buf); 1033 1034 return ret; 1035 } 1036 1037 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, 1038 struct ethtool_rxnfc *rx_rings, 1039 u32 size) 1040 { 1041 int i; 1042 1043 if (copy_from_user(indir, useraddr, array_size(size, sizeof(indir[0])))) 1044 return -EFAULT; 1045 1046 /* Validate ring indices */ 1047 for (i = 0; i < size; i++) 1048 if (indir[i] >= rx_rings->data) 1049 return -EINVAL; 1050 1051 return 0; 1052 } 1053 1054 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; 1055 1056 void netdev_rss_key_fill(void *buffer, size_t len) 1057 { 1058 BUG_ON(len > sizeof(netdev_rss_key)); 1059 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); 1060 memcpy(buffer, netdev_rss_key, len); 1061 } 1062 EXPORT_SYMBOL(netdev_rss_key_fill); 1063 1064 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, 1065 void __user *useraddr) 1066 { 1067 u32 user_size, dev_size; 1068 u32 *indir; 1069 int ret; 1070 1071 if (!dev->ethtool_ops->get_rxfh_indir_size || 1072 !dev->ethtool_ops->get_rxfh) 1073 return -EOPNOTSUPP; 1074 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev); 1075 if (dev_size == 0) 1076 return -EOPNOTSUPP; 1077 1078 if (copy_from_user(&user_size, 1079 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1080 sizeof(user_size))) 1081 return -EFAULT; 1082 1083 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), 1084 &dev_size, sizeof(dev_size))) 1085 return -EFAULT; 1086 1087 /* If the user buffer size is 0, this is just a query for the 1088 * device table size. Otherwise, if it's smaller than the 1089 * device table size it's an error. 1090 */ 1091 if (user_size < dev_size) 1092 return user_size == 0 ? 0 : -EINVAL; 1093 1094 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); 1095 if (!indir) 1096 return -ENOMEM; 1097 1098 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL); 1099 if (ret) 1100 goto out; 1101 1102 if (copy_to_user(useraddr + 1103 offsetof(struct ethtool_rxfh_indir, ring_index[0]), 1104 indir, dev_size * sizeof(indir[0]))) 1105 ret = -EFAULT; 1106 1107 out: 1108 kfree(indir); 1109 return ret; 1110 } 1111 1112 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, 1113 void __user *useraddr) 1114 { 1115 struct ethtool_rxnfc rx_rings; 1116 u32 user_size, dev_size, i; 1117 u32 *indir; 1118 const struct ethtool_ops *ops = dev->ethtool_ops; 1119 int ret; 1120 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); 1121 1122 if (!ops->get_rxfh_indir_size || !ops->set_rxfh || 1123 !ops->get_rxnfc) 1124 return -EOPNOTSUPP; 1125 1126 dev_size = ops->get_rxfh_indir_size(dev); 1127 if (dev_size == 0) 1128 return -EOPNOTSUPP; 1129 1130 if (copy_from_user(&user_size, 1131 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1132 sizeof(user_size))) 1133 return -EFAULT; 1134 1135 if (user_size != 0 && user_size != dev_size) 1136 return -EINVAL; 1137 1138 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); 1139 if (!indir) 1140 return -ENOMEM; 1141 1142 rx_rings.cmd = ETHTOOL_GRXRINGS; 1143 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1144 if (ret) 1145 goto out; 1146 1147 if (user_size == 0) { 1148 for (i = 0; i < dev_size; i++) 1149 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1150 } else { 1151 ret = ethtool_copy_validate_indir(indir, 1152 useraddr + ringidx_offset, 1153 &rx_rings, 1154 dev_size); 1155 if (ret) 1156 goto out; 1157 } 1158 1159 ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE); 1160 if (ret) 1161 goto out; 1162 1163 /* indicate whether rxfh was set to default */ 1164 if (user_size == 0) 1165 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1166 else 1167 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1168 1169 out: 1170 kfree(indir); 1171 return ret; 1172 } 1173 1174 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, 1175 void __user *useraddr) 1176 { 1177 int ret; 1178 const struct ethtool_ops *ops = dev->ethtool_ops; 1179 u32 user_indir_size, user_key_size; 1180 u32 dev_indir_size = 0, dev_key_size = 0; 1181 struct ethtool_rxfh rxfh; 1182 u32 total_size; 1183 u32 indir_bytes; 1184 u32 *indir = NULL; 1185 u8 dev_hfunc = 0; 1186 u8 *hkey = NULL; 1187 u8 *rss_config; 1188 1189 if (!ops->get_rxfh) 1190 return -EOPNOTSUPP; 1191 1192 if (ops->get_rxfh_indir_size) 1193 dev_indir_size = ops->get_rxfh_indir_size(dev); 1194 if (ops->get_rxfh_key_size) 1195 dev_key_size = ops->get_rxfh_key_size(dev); 1196 1197 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1198 return -EFAULT; 1199 user_indir_size = rxfh.indir_size; 1200 user_key_size = rxfh.key_size; 1201 1202 /* Check that reserved fields are 0 for now */ 1203 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32) 1204 return -EINVAL; 1205 /* Most drivers don't handle rss_context, check it's 0 as well */ 1206 if (rxfh.rss_context && !ops->get_rxfh_context) 1207 return -EOPNOTSUPP; 1208 1209 rxfh.indir_size = dev_indir_size; 1210 rxfh.key_size = dev_key_size; 1211 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) 1212 return -EFAULT; 1213 1214 if ((user_indir_size && (user_indir_size != dev_indir_size)) || 1215 (user_key_size && (user_key_size != dev_key_size))) 1216 return -EINVAL; 1217 1218 indir_bytes = user_indir_size * sizeof(indir[0]); 1219 total_size = indir_bytes + user_key_size; 1220 rss_config = kzalloc(total_size, GFP_USER); 1221 if (!rss_config) 1222 return -ENOMEM; 1223 1224 if (user_indir_size) 1225 indir = (u32 *)rss_config; 1226 1227 if (user_key_size) 1228 hkey = rss_config + indir_bytes; 1229 1230 if (rxfh.rss_context) 1231 ret = dev->ethtool_ops->get_rxfh_context(dev, indir, hkey, 1232 &dev_hfunc, 1233 rxfh.rss_context); 1234 else 1235 ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc); 1236 if (ret) 1237 goto out; 1238 1239 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), 1240 &dev_hfunc, sizeof(rxfh.hfunc))) { 1241 ret = -EFAULT; 1242 } else if (copy_to_user(useraddr + 1243 offsetof(struct ethtool_rxfh, rss_config[0]), 1244 rss_config, total_size)) { 1245 ret = -EFAULT; 1246 } 1247 out: 1248 kfree(rss_config); 1249 1250 return ret; 1251 } 1252 1253 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, 1254 void __user *useraddr) 1255 { 1256 int ret; 1257 const struct ethtool_ops *ops = dev->ethtool_ops; 1258 struct ethtool_rxnfc rx_rings; 1259 struct ethtool_rxfh rxfh; 1260 u32 dev_indir_size = 0, dev_key_size = 0, i; 1261 u32 *indir = NULL, indir_bytes = 0; 1262 u8 *hkey = NULL; 1263 u8 *rss_config; 1264 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); 1265 bool delete = false; 1266 1267 if (!ops->get_rxnfc || !ops->set_rxfh) 1268 return -EOPNOTSUPP; 1269 1270 if (ops->get_rxfh_indir_size) 1271 dev_indir_size = ops->get_rxfh_indir_size(dev); 1272 if (ops->get_rxfh_key_size) 1273 dev_key_size = ops->get_rxfh_key_size(dev); 1274 1275 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1276 return -EFAULT; 1277 1278 /* Check that reserved fields are 0 for now */ 1279 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32) 1280 return -EINVAL; 1281 /* Most drivers don't handle rss_context, check it's 0 as well */ 1282 if (rxfh.rss_context && !ops->set_rxfh_context) 1283 return -EOPNOTSUPP; 1284 1285 /* If either indir, hash key or function is valid, proceed further. 1286 * Must request at least one change: indir size, hash key or function. 1287 */ 1288 if ((rxfh.indir_size && 1289 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && 1290 rxfh.indir_size != dev_indir_size) || 1291 (rxfh.key_size && (rxfh.key_size != dev_key_size)) || 1292 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && 1293 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE)) 1294 return -EINVAL; 1295 1296 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1297 indir_bytes = dev_indir_size * sizeof(indir[0]); 1298 1299 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER); 1300 if (!rss_config) 1301 return -ENOMEM; 1302 1303 rx_rings.cmd = ETHTOOL_GRXRINGS; 1304 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1305 if (ret) 1306 goto out; 1307 1308 /* rxfh.indir_size == 0 means reset the indir table to default (master 1309 * context) or delete the context (other RSS contexts). 1310 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. 1311 */ 1312 if (rxfh.indir_size && 1313 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { 1314 indir = (u32 *)rss_config; 1315 ret = ethtool_copy_validate_indir(indir, 1316 useraddr + rss_cfg_offset, 1317 &rx_rings, 1318 rxfh.indir_size); 1319 if (ret) 1320 goto out; 1321 } else if (rxfh.indir_size == 0) { 1322 if (rxfh.rss_context == 0) { 1323 indir = (u32 *)rss_config; 1324 for (i = 0; i < dev_indir_size; i++) 1325 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1326 } else { 1327 delete = true; 1328 } 1329 } 1330 1331 if (rxfh.key_size) { 1332 hkey = rss_config + indir_bytes; 1333 if (copy_from_user(hkey, 1334 useraddr + rss_cfg_offset + indir_bytes, 1335 rxfh.key_size)) { 1336 ret = -EFAULT; 1337 goto out; 1338 } 1339 } 1340 1341 if (rxfh.rss_context) 1342 ret = ops->set_rxfh_context(dev, indir, hkey, rxfh.hfunc, 1343 &rxfh.rss_context, delete); 1344 else 1345 ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc); 1346 if (ret) 1347 goto out; 1348 1349 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), 1350 &rxfh.rss_context, sizeof(rxfh.rss_context))) 1351 ret = -EFAULT; 1352 1353 if (!rxfh.rss_context) { 1354 /* indicate whether rxfh was set to default */ 1355 if (rxfh.indir_size == 0) 1356 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1357 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1358 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1359 } 1360 1361 out: 1362 kfree(rss_config); 1363 return ret; 1364 } 1365 1366 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) 1367 { 1368 struct ethtool_regs regs; 1369 const struct ethtool_ops *ops = dev->ethtool_ops; 1370 void *regbuf; 1371 int reglen, ret; 1372 1373 if (!ops->get_regs || !ops->get_regs_len) 1374 return -EOPNOTSUPP; 1375 1376 if (copy_from_user(®s, useraddr, sizeof(regs))) 1377 return -EFAULT; 1378 1379 reglen = ops->get_regs_len(dev); 1380 if (reglen <= 0) 1381 return reglen; 1382 1383 if (regs.len > reglen) 1384 regs.len = reglen; 1385 1386 regbuf = vzalloc(reglen); 1387 if (!regbuf) 1388 return -ENOMEM; 1389 1390 if (regs.len < reglen) 1391 reglen = regs.len; 1392 1393 ops->get_regs(dev, ®s, regbuf); 1394 1395 ret = -EFAULT; 1396 if (copy_to_user(useraddr, ®s, sizeof(regs))) 1397 goto out; 1398 useraddr += offsetof(struct ethtool_regs, data); 1399 if (copy_to_user(useraddr, regbuf, reglen)) 1400 goto out; 1401 ret = 0; 1402 1403 out: 1404 vfree(regbuf); 1405 return ret; 1406 } 1407 1408 static int ethtool_reset(struct net_device *dev, char __user *useraddr) 1409 { 1410 struct ethtool_value reset; 1411 int ret; 1412 1413 if (!dev->ethtool_ops->reset) 1414 return -EOPNOTSUPP; 1415 1416 if (copy_from_user(&reset, useraddr, sizeof(reset))) 1417 return -EFAULT; 1418 1419 ret = dev->ethtool_ops->reset(dev, &reset.data); 1420 if (ret) 1421 return ret; 1422 1423 if (copy_to_user(useraddr, &reset, sizeof(reset))) 1424 return -EFAULT; 1425 return 0; 1426 } 1427 1428 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) 1429 { 1430 struct ethtool_wolinfo wol; 1431 1432 if (!dev->ethtool_ops->get_wol) 1433 return -EOPNOTSUPP; 1434 1435 memset(&wol, 0, sizeof(struct ethtool_wolinfo)); 1436 wol.cmd = ETHTOOL_GWOL; 1437 dev->ethtool_ops->get_wol(dev, &wol); 1438 1439 if (copy_to_user(useraddr, &wol, sizeof(wol))) 1440 return -EFAULT; 1441 return 0; 1442 } 1443 1444 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) 1445 { 1446 struct ethtool_wolinfo wol; 1447 int ret; 1448 1449 if (!dev->ethtool_ops->set_wol) 1450 return -EOPNOTSUPP; 1451 1452 if (copy_from_user(&wol, useraddr, sizeof(wol))) 1453 return -EFAULT; 1454 1455 ret = dev->ethtool_ops->set_wol(dev, &wol); 1456 if (ret) 1457 return ret; 1458 1459 dev->wol_enabled = !!wol.wolopts; 1460 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL); 1461 1462 return 0; 1463 } 1464 1465 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) 1466 { 1467 struct ethtool_eee edata; 1468 int rc; 1469 1470 if (!dev->ethtool_ops->get_eee) 1471 return -EOPNOTSUPP; 1472 1473 memset(&edata, 0, sizeof(struct ethtool_eee)); 1474 edata.cmd = ETHTOOL_GEEE; 1475 rc = dev->ethtool_ops->get_eee(dev, &edata); 1476 1477 if (rc) 1478 return rc; 1479 1480 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1481 return -EFAULT; 1482 1483 return 0; 1484 } 1485 1486 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) 1487 { 1488 struct ethtool_eee edata; 1489 int ret; 1490 1491 if (!dev->ethtool_ops->set_eee) 1492 return -EOPNOTSUPP; 1493 1494 if (copy_from_user(&edata, useraddr, sizeof(edata))) 1495 return -EFAULT; 1496 1497 ret = dev->ethtool_ops->set_eee(dev, &edata); 1498 if (!ret) 1499 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL); 1500 return ret; 1501 } 1502 1503 static int ethtool_nway_reset(struct net_device *dev) 1504 { 1505 if (!dev->ethtool_ops->nway_reset) 1506 return -EOPNOTSUPP; 1507 1508 return dev->ethtool_ops->nway_reset(dev); 1509 } 1510 1511 static int ethtool_get_link(struct net_device *dev, char __user *useraddr) 1512 { 1513 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; 1514 int link = __ethtool_get_link(dev); 1515 1516 if (link < 0) 1517 return link; 1518 1519 edata.data = link; 1520 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1521 return -EFAULT; 1522 return 0; 1523 } 1524 1525 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, 1526 int (*getter)(struct net_device *, 1527 struct ethtool_eeprom *, u8 *), 1528 u32 total_len) 1529 { 1530 struct ethtool_eeprom eeprom; 1531 void __user *userbuf = useraddr + sizeof(eeprom); 1532 u32 bytes_remaining; 1533 u8 *data; 1534 int ret = 0; 1535 1536 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1537 return -EFAULT; 1538 1539 /* Check for wrap and zero */ 1540 if (eeprom.offset + eeprom.len <= eeprom.offset) 1541 return -EINVAL; 1542 1543 /* Check for exceeding total eeprom len */ 1544 if (eeprom.offset + eeprom.len > total_len) 1545 return -EINVAL; 1546 1547 data = kzalloc(PAGE_SIZE, GFP_USER); 1548 if (!data) 1549 return -ENOMEM; 1550 1551 bytes_remaining = eeprom.len; 1552 while (bytes_remaining > 0) { 1553 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1554 1555 ret = getter(dev, &eeprom, data); 1556 if (ret) 1557 break; 1558 if (!eeprom.len) { 1559 ret = -EIO; 1560 break; 1561 } 1562 if (copy_to_user(userbuf, data, eeprom.len)) { 1563 ret = -EFAULT; 1564 break; 1565 } 1566 userbuf += eeprom.len; 1567 eeprom.offset += eeprom.len; 1568 bytes_remaining -= eeprom.len; 1569 } 1570 1571 eeprom.len = userbuf - (useraddr + sizeof(eeprom)); 1572 eeprom.offset -= eeprom.len; 1573 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) 1574 ret = -EFAULT; 1575 1576 kfree(data); 1577 return ret; 1578 } 1579 1580 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) 1581 { 1582 const struct ethtool_ops *ops = dev->ethtool_ops; 1583 1584 if (!ops->get_eeprom || !ops->get_eeprom_len || 1585 !ops->get_eeprom_len(dev)) 1586 return -EOPNOTSUPP; 1587 1588 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, 1589 ops->get_eeprom_len(dev)); 1590 } 1591 1592 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) 1593 { 1594 struct ethtool_eeprom eeprom; 1595 const struct ethtool_ops *ops = dev->ethtool_ops; 1596 void __user *userbuf = useraddr + sizeof(eeprom); 1597 u32 bytes_remaining; 1598 u8 *data; 1599 int ret = 0; 1600 1601 if (!ops->set_eeprom || !ops->get_eeprom_len || 1602 !ops->get_eeprom_len(dev)) 1603 return -EOPNOTSUPP; 1604 1605 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1606 return -EFAULT; 1607 1608 /* Check for wrap and zero */ 1609 if (eeprom.offset + eeprom.len <= eeprom.offset) 1610 return -EINVAL; 1611 1612 /* Check for exceeding total eeprom len */ 1613 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) 1614 return -EINVAL; 1615 1616 data = kzalloc(PAGE_SIZE, GFP_USER); 1617 if (!data) 1618 return -ENOMEM; 1619 1620 bytes_remaining = eeprom.len; 1621 while (bytes_remaining > 0) { 1622 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1623 1624 if (copy_from_user(data, userbuf, eeprom.len)) { 1625 ret = -EFAULT; 1626 break; 1627 } 1628 ret = ops->set_eeprom(dev, &eeprom, data); 1629 if (ret) 1630 break; 1631 userbuf += eeprom.len; 1632 eeprom.offset += eeprom.len; 1633 bytes_remaining -= eeprom.len; 1634 } 1635 1636 kfree(data); 1637 return ret; 1638 } 1639 1640 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, 1641 void __user *useraddr) 1642 { 1643 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 1644 struct kernel_ethtool_coalesce kernel_coalesce = {}; 1645 int ret; 1646 1647 if (!dev->ethtool_ops->get_coalesce) 1648 return -EOPNOTSUPP; 1649 1650 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 1651 NULL); 1652 if (ret) 1653 return ret; 1654 1655 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 1656 return -EFAULT; 1657 return 0; 1658 } 1659 1660 static bool 1661 ethtool_set_coalesce_supported(struct net_device *dev, 1662 struct ethtool_coalesce *coalesce) 1663 { 1664 u32 supported_params = dev->ethtool_ops->supported_coalesce_params; 1665 u32 nonzero_params = 0; 1666 1667 if (coalesce->rx_coalesce_usecs) 1668 nonzero_params |= ETHTOOL_COALESCE_RX_USECS; 1669 if (coalesce->rx_max_coalesced_frames) 1670 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; 1671 if (coalesce->rx_coalesce_usecs_irq) 1672 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; 1673 if (coalesce->rx_max_coalesced_frames_irq) 1674 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; 1675 if (coalesce->tx_coalesce_usecs) 1676 nonzero_params |= ETHTOOL_COALESCE_TX_USECS; 1677 if (coalesce->tx_max_coalesced_frames) 1678 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; 1679 if (coalesce->tx_coalesce_usecs_irq) 1680 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; 1681 if (coalesce->tx_max_coalesced_frames_irq) 1682 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; 1683 if (coalesce->stats_block_coalesce_usecs) 1684 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; 1685 if (coalesce->use_adaptive_rx_coalesce) 1686 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; 1687 if (coalesce->use_adaptive_tx_coalesce) 1688 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; 1689 if (coalesce->pkt_rate_low) 1690 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; 1691 if (coalesce->rx_coalesce_usecs_low) 1692 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; 1693 if (coalesce->rx_max_coalesced_frames_low) 1694 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; 1695 if (coalesce->tx_coalesce_usecs_low) 1696 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; 1697 if (coalesce->tx_max_coalesced_frames_low) 1698 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; 1699 if (coalesce->pkt_rate_high) 1700 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; 1701 if (coalesce->rx_coalesce_usecs_high) 1702 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; 1703 if (coalesce->rx_max_coalesced_frames_high) 1704 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; 1705 if (coalesce->tx_coalesce_usecs_high) 1706 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; 1707 if (coalesce->tx_max_coalesced_frames_high) 1708 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; 1709 if (coalesce->rate_sample_interval) 1710 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; 1711 1712 return (supported_params & nonzero_params) == nonzero_params; 1713 } 1714 1715 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, 1716 void __user *useraddr) 1717 { 1718 struct kernel_ethtool_coalesce kernel_coalesce = {}; 1719 struct ethtool_coalesce coalesce; 1720 int ret; 1721 1722 if (!dev->ethtool_ops->set_coalesce && !dev->ethtool_ops->get_coalesce) 1723 return -EOPNOTSUPP; 1724 1725 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 1726 NULL); 1727 if (ret) 1728 return ret; 1729 1730 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) 1731 return -EFAULT; 1732 1733 if (!ethtool_set_coalesce_supported(dev, &coalesce)) 1734 return -EOPNOTSUPP; 1735 1736 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, 1737 NULL); 1738 if (!ret) 1739 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL); 1740 return ret; 1741 } 1742 1743 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) 1744 { 1745 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; 1746 1747 if (!dev->ethtool_ops->get_ringparam) 1748 return -EOPNOTSUPP; 1749 1750 dev->ethtool_ops->get_ringparam(dev, &ringparam); 1751 1752 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) 1753 return -EFAULT; 1754 return 0; 1755 } 1756 1757 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) 1758 { 1759 struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM }; 1760 int ret; 1761 1762 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) 1763 return -EOPNOTSUPP; 1764 1765 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) 1766 return -EFAULT; 1767 1768 dev->ethtool_ops->get_ringparam(dev, &max); 1769 1770 /* ensure new ring parameters are within the maximums */ 1771 if (ringparam.rx_pending > max.rx_max_pending || 1772 ringparam.rx_mini_pending > max.rx_mini_max_pending || 1773 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || 1774 ringparam.tx_pending > max.tx_max_pending) 1775 return -EINVAL; 1776 1777 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam); 1778 if (!ret) 1779 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL); 1780 return ret; 1781 } 1782 1783 static noinline_for_stack int ethtool_get_channels(struct net_device *dev, 1784 void __user *useraddr) 1785 { 1786 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; 1787 1788 if (!dev->ethtool_ops->get_channels) 1789 return -EOPNOTSUPP; 1790 1791 dev->ethtool_ops->get_channels(dev, &channels); 1792 1793 if (copy_to_user(useraddr, &channels, sizeof(channels))) 1794 return -EFAULT; 1795 return 0; 1796 } 1797 1798 static noinline_for_stack int ethtool_set_channels(struct net_device *dev, 1799 void __user *useraddr) 1800 { 1801 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; 1802 u16 from_channel, to_channel; 1803 u32 max_rx_in_use = 0; 1804 unsigned int i; 1805 int ret; 1806 1807 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) 1808 return -EOPNOTSUPP; 1809 1810 if (copy_from_user(&channels, useraddr, sizeof(channels))) 1811 return -EFAULT; 1812 1813 dev->ethtool_ops->get_channels(dev, &curr); 1814 1815 if (channels.rx_count == curr.rx_count && 1816 channels.tx_count == curr.tx_count && 1817 channels.combined_count == curr.combined_count && 1818 channels.other_count == curr.other_count) 1819 return 0; 1820 1821 /* ensure new counts are within the maximums */ 1822 if (channels.rx_count > curr.max_rx || 1823 channels.tx_count > curr.max_tx || 1824 channels.combined_count > curr.max_combined || 1825 channels.other_count > curr.max_other) 1826 return -EINVAL; 1827 1828 /* ensure there is at least one RX and one TX channel */ 1829 if (!channels.combined_count && 1830 (!channels.rx_count || !channels.tx_count)) 1831 return -EINVAL; 1832 1833 /* ensure the new Rx count fits within the configured Rx flow 1834 * indirection table settings */ 1835 if (netif_is_rxfh_configured(dev) && 1836 !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) && 1837 (channels.combined_count + channels.rx_count) <= max_rx_in_use) 1838 return -EINVAL; 1839 1840 /* Disabling channels, query zero-copy AF_XDP sockets */ 1841 from_channel = channels.combined_count + 1842 min(channels.rx_count, channels.tx_count); 1843 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); 1844 for (i = from_channel; i < to_channel; i++) 1845 if (xsk_get_pool_from_qid(dev, i)) 1846 return -EINVAL; 1847 1848 ret = dev->ethtool_ops->set_channels(dev, &channels); 1849 if (!ret) 1850 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL); 1851 return ret; 1852 } 1853 1854 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) 1855 { 1856 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; 1857 1858 if (!dev->ethtool_ops->get_pauseparam) 1859 return -EOPNOTSUPP; 1860 1861 dev->ethtool_ops->get_pauseparam(dev, &pauseparam); 1862 1863 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) 1864 return -EFAULT; 1865 return 0; 1866 } 1867 1868 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) 1869 { 1870 struct ethtool_pauseparam pauseparam; 1871 int ret; 1872 1873 if (!dev->ethtool_ops->set_pauseparam) 1874 return -EOPNOTSUPP; 1875 1876 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) 1877 return -EFAULT; 1878 1879 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); 1880 if (!ret) 1881 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL); 1882 return ret; 1883 } 1884 1885 static int ethtool_self_test(struct net_device *dev, char __user *useraddr) 1886 { 1887 struct ethtool_test test; 1888 const struct ethtool_ops *ops = dev->ethtool_ops; 1889 u64 *data; 1890 int ret, test_len; 1891 1892 if (!ops->self_test || !ops->get_sset_count) 1893 return -EOPNOTSUPP; 1894 1895 test_len = ops->get_sset_count(dev, ETH_SS_TEST); 1896 if (test_len < 0) 1897 return test_len; 1898 WARN_ON(test_len == 0); 1899 1900 if (copy_from_user(&test, useraddr, sizeof(test))) 1901 return -EFAULT; 1902 1903 test.len = test_len; 1904 data = kcalloc(test_len, sizeof(u64), GFP_USER); 1905 if (!data) 1906 return -ENOMEM; 1907 1908 netif_testing_on(dev); 1909 ops->self_test(dev, &test, data); 1910 netif_testing_off(dev); 1911 1912 ret = -EFAULT; 1913 if (copy_to_user(useraddr, &test, sizeof(test))) 1914 goto out; 1915 useraddr += sizeof(test); 1916 if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) 1917 goto out; 1918 ret = 0; 1919 1920 out: 1921 kfree(data); 1922 return ret; 1923 } 1924 1925 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) 1926 { 1927 struct ethtool_gstrings gstrings; 1928 u8 *data; 1929 int ret; 1930 1931 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) 1932 return -EFAULT; 1933 1934 ret = __ethtool_get_sset_count(dev, gstrings.string_set); 1935 if (ret < 0) 1936 return ret; 1937 if (ret > S32_MAX / ETH_GSTRING_LEN) 1938 return -ENOMEM; 1939 WARN_ON_ONCE(!ret); 1940 1941 gstrings.len = ret; 1942 1943 if (gstrings.len) { 1944 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); 1945 if (!data) 1946 return -ENOMEM; 1947 1948 __ethtool_get_strings(dev, gstrings.string_set, data); 1949 } else { 1950 data = NULL; 1951 } 1952 1953 ret = -EFAULT; 1954 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) 1955 goto out; 1956 useraddr += sizeof(gstrings); 1957 if (gstrings.len && 1958 copy_to_user(useraddr, data, 1959 array_size(gstrings.len, ETH_GSTRING_LEN))) 1960 goto out; 1961 ret = 0; 1962 1963 out: 1964 vfree(data); 1965 return ret; 1966 } 1967 1968 __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) 1969 { 1970 va_list args; 1971 1972 va_start(args, fmt); 1973 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); 1974 va_end(args); 1975 1976 *data += ETH_GSTRING_LEN; 1977 } 1978 EXPORT_SYMBOL(ethtool_sprintf); 1979 1980 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) 1981 { 1982 struct ethtool_value id; 1983 static bool busy; 1984 const struct ethtool_ops *ops = dev->ethtool_ops; 1985 int rc; 1986 1987 if (!ops->set_phys_id) 1988 return -EOPNOTSUPP; 1989 1990 if (busy) 1991 return -EBUSY; 1992 1993 if (copy_from_user(&id, useraddr, sizeof(id))) 1994 return -EFAULT; 1995 1996 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); 1997 if (rc < 0) 1998 return rc; 1999 2000 /* Drop the RTNL lock while waiting, but prevent reentry or 2001 * removal of the device. 2002 */ 2003 busy = true; 2004 dev_hold(dev); 2005 rtnl_unlock(); 2006 2007 if (rc == 0) { 2008 /* Driver will handle this itself */ 2009 schedule_timeout_interruptible( 2010 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); 2011 } else { 2012 /* Driver expects to be called at twice the frequency in rc */ 2013 int n = rc * 2, interval = HZ / n; 2014 u64 count = n * id.data, i = 0; 2015 2016 do { 2017 rtnl_lock(); 2018 rc = ops->set_phys_id(dev, 2019 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); 2020 rtnl_unlock(); 2021 if (rc) 2022 break; 2023 schedule_timeout_interruptible(interval); 2024 } while (!signal_pending(current) && (!id.data || i < count)); 2025 } 2026 2027 rtnl_lock(); 2028 dev_put(dev); 2029 busy = false; 2030 2031 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); 2032 return rc; 2033 } 2034 2035 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) 2036 { 2037 struct ethtool_stats stats; 2038 const struct ethtool_ops *ops = dev->ethtool_ops; 2039 u64 *data; 2040 int ret, n_stats; 2041 2042 if (!ops->get_ethtool_stats || !ops->get_sset_count) 2043 return -EOPNOTSUPP; 2044 2045 n_stats = ops->get_sset_count(dev, ETH_SS_STATS); 2046 if (n_stats < 0) 2047 return n_stats; 2048 if (n_stats > S32_MAX / sizeof(u64)) 2049 return -ENOMEM; 2050 WARN_ON_ONCE(!n_stats); 2051 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2052 return -EFAULT; 2053 2054 stats.n_stats = n_stats; 2055 2056 if (n_stats) { 2057 data = vzalloc(array_size(n_stats, sizeof(u64))); 2058 if (!data) 2059 return -ENOMEM; 2060 ops->get_ethtool_stats(dev, &stats, data); 2061 } else { 2062 data = NULL; 2063 } 2064 2065 ret = -EFAULT; 2066 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2067 goto out; 2068 useraddr += sizeof(stats); 2069 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) 2070 goto out; 2071 ret = 0; 2072 2073 out: 2074 vfree(data); 2075 return ret; 2076 } 2077 2078 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) 2079 { 2080 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 2081 const struct ethtool_ops *ops = dev->ethtool_ops; 2082 struct phy_device *phydev = dev->phydev; 2083 struct ethtool_stats stats; 2084 u64 *data; 2085 int ret, n_stats; 2086 2087 if (!phydev && (!ops->get_ethtool_phy_stats || !ops->get_sset_count)) 2088 return -EOPNOTSUPP; 2089 2090 if (dev->phydev && !ops->get_ethtool_phy_stats && 2091 phy_ops && phy_ops->get_sset_count) 2092 n_stats = phy_ops->get_sset_count(dev->phydev); 2093 else 2094 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); 2095 if (n_stats < 0) 2096 return n_stats; 2097 if (n_stats > S32_MAX / sizeof(u64)) 2098 return -ENOMEM; 2099 WARN_ON_ONCE(!n_stats); 2100 2101 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2102 return -EFAULT; 2103 2104 stats.n_stats = n_stats; 2105 2106 if (n_stats) { 2107 data = vzalloc(array_size(n_stats, sizeof(u64))); 2108 if (!data) 2109 return -ENOMEM; 2110 2111 if (dev->phydev && !ops->get_ethtool_phy_stats && 2112 phy_ops && phy_ops->get_stats) { 2113 ret = phy_ops->get_stats(dev->phydev, &stats, data); 2114 if (ret < 0) 2115 goto out; 2116 } else { 2117 ops->get_ethtool_phy_stats(dev, &stats, data); 2118 } 2119 } else { 2120 data = NULL; 2121 } 2122 2123 ret = -EFAULT; 2124 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2125 goto out; 2126 useraddr += sizeof(stats); 2127 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) 2128 goto out; 2129 ret = 0; 2130 2131 out: 2132 vfree(data); 2133 return ret; 2134 } 2135 2136 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) 2137 { 2138 struct ethtool_perm_addr epaddr; 2139 2140 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) 2141 return -EFAULT; 2142 2143 if (epaddr.size < dev->addr_len) 2144 return -ETOOSMALL; 2145 epaddr.size = dev->addr_len; 2146 2147 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) 2148 return -EFAULT; 2149 useraddr += sizeof(epaddr); 2150 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) 2151 return -EFAULT; 2152 return 0; 2153 } 2154 2155 static int ethtool_get_value(struct net_device *dev, char __user *useraddr, 2156 u32 cmd, u32 (*actor)(struct net_device *)) 2157 { 2158 struct ethtool_value edata = { .cmd = cmd }; 2159 2160 if (!actor) 2161 return -EOPNOTSUPP; 2162 2163 edata.data = actor(dev); 2164 2165 if (copy_to_user(useraddr, &edata, sizeof(edata))) 2166 return -EFAULT; 2167 return 0; 2168 } 2169 2170 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, 2171 void (*actor)(struct net_device *, u32)) 2172 { 2173 struct ethtool_value edata; 2174 2175 if (!actor) 2176 return -EOPNOTSUPP; 2177 2178 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2179 return -EFAULT; 2180 2181 actor(dev, edata.data); 2182 return 0; 2183 } 2184 2185 static int ethtool_set_value(struct net_device *dev, char __user *useraddr, 2186 int (*actor)(struct net_device *, u32)) 2187 { 2188 struct ethtool_value edata; 2189 2190 if (!actor) 2191 return -EOPNOTSUPP; 2192 2193 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2194 return -EFAULT; 2195 2196 return actor(dev, edata.data); 2197 } 2198 2199 static int 2200 ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) 2201 { 2202 if (!dev->ethtool_ops->flash_device) { 2203 req->devlink = netdev_to_devlink_get(dev); 2204 return 0; 2205 } 2206 2207 return dev->ethtool_ops->flash_device(dev, &req->efl); 2208 } 2209 2210 static int ethtool_set_dump(struct net_device *dev, 2211 void __user *useraddr) 2212 { 2213 struct ethtool_dump dump; 2214 2215 if (!dev->ethtool_ops->set_dump) 2216 return -EOPNOTSUPP; 2217 2218 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2219 return -EFAULT; 2220 2221 return dev->ethtool_ops->set_dump(dev, &dump); 2222 } 2223 2224 static int ethtool_get_dump_flag(struct net_device *dev, 2225 void __user *useraddr) 2226 { 2227 int ret; 2228 struct ethtool_dump dump; 2229 const struct ethtool_ops *ops = dev->ethtool_ops; 2230 2231 if (!ops->get_dump_flag) 2232 return -EOPNOTSUPP; 2233 2234 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2235 return -EFAULT; 2236 2237 ret = ops->get_dump_flag(dev, &dump); 2238 if (ret) 2239 return ret; 2240 2241 if (copy_to_user(useraddr, &dump, sizeof(dump))) 2242 return -EFAULT; 2243 return 0; 2244 } 2245 2246 static int ethtool_get_dump_data(struct net_device *dev, 2247 void __user *useraddr) 2248 { 2249 int ret; 2250 __u32 len; 2251 struct ethtool_dump dump, tmp; 2252 const struct ethtool_ops *ops = dev->ethtool_ops; 2253 void *data = NULL; 2254 2255 if (!ops->get_dump_data || !ops->get_dump_flag) 2256 return -EOPNOTSUPP; 2257 2258 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2259 return -EFAULT; 2260 2261 memset(&tmp, 0, sizeof(tmp)); 2262 tmp.cmd = ETHTOOL_GET_DUMP_FLAG; 2263 ret = ops->get_dump_flag(dev, &tmp); 2264 if (ret) 2265 return ret; 2266 2267 len = min(tmp.len, dump.len); 2268 if (!len) 2269 return -EFAULT; 2270 2271 /* Don't ever let the driver think there's more space available 2272 * than it requested with .get_dump_flag(). 2273 */ 2274 dump.len = len; 2275 2276 /* Always allocate enough space to hold the whole thing so that the 2277 * driver does not need to check the length and bother with partial 2278 * dumping. 2279 */ 2280 data = vzalloc(tmp.len); 2281 if (!data) 2282 return -ENOMEM; 2283 ret = ops->get_dump_data(dev, &dump, data); 2284 if (ret) 2285 goto out; 2286 2287 /* There are two sane possibilities: 2288 * 1. The driver's .get_dump_data() does not touch dump.len. 2289 * 2. Or it may set dump.len to how much it really writes, which 2290 * should be tmp.len (or len if it can do a partial dump). 2291 * In any case respond to userspace with the actual length of data 2292 * it's receiving. 2293 */ 2294 WARN_ON(dump.len != len && dump.len != tmp.len); 2295 dump.len = len; 2296 2297 if (copy_to_user(useraddr, &dump, sizeof(dump))) { 2298 ret = -EFAULT; 2299 goto out; 2300 } 2301 useraddr += offsetof(struct ethtool_dump, data); 2302 if (copy_to_user(useraddr, data, len)) 2303 ret = -EFAULT; 2304 out: 2305 vfree(data); 2306 return ret; 2307 } 2308 2309 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) 2310 { 2311 struct ethtool_ts_info info; 2312 int err; 2313 2314 err = __ethtool_get_ts_info(dev, &info); 2315 if (err) 2316 return err; 2317 2318 if (copy_to_user(useraddr, &info, sizeof(info))) 2319 return -EFAULT; 2320 2321 return 0; 2322 } 2323 2324 int ethtool_get_module_info_call(struct net_device *dev, 2325 struct ethtool_modinfo *modinfo) 2326 { 2327 const struct ethtool_ops *ops = dev->ethtool_ops; 2328 struct phy_device *phydev = dev->phydev; 2329 2330 if (dev->sfp_bus) 2331 return sfp_get_module_info(dev->sfp_bus, modinfo); 2332 2333 if (phydev && phydev->drv && phydev->drv->module_info) 2334 return phydev->drv->module_info(phydev, modinfo); 2335 2336 if (ops->get_module_info) 2337 return ops->get_module_info(dev, modinfo); 2338 2339 return -EOPNOTSUPP; 2340 } 2341 2342 static int ethtool_get_module_info(struct net_device *dev, 2343 void __user *useraddr) 2344 { 2345 int ret; 2346 struct ethtool_modinfo modinfo; 2347 2348 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) 2349 return -EFAULT; 2350 2351 ret = ethtool_get_module_info_call(dev, &modinfo); 2352 if (ret) 2353 return ret; 2354 2355 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) 2356 return -EFAULT; 2357 2358 return 0; 2359 } 2360 2361 int ethtool_get_module_eeprom_call(struct net_device *dev, 2362 struct ethtool_eeprom *ee, u8 *data) 2363 { 2364 const struct ethtool_ops *ops = dev->ethtool_ops; 2365 struct phy_device *phydev = dev->phydev; 2366 2367 if (dev->sfp_bus) 2368 return sfp_get_module_eeprom(dev->sfp_bus, ee, data); 2369 2370 if (phydev && phydev->drv && phydev->drv->module_eeprom) 2371 return phydev->drv->module_eeprom(phydev, ee, data); 2372 2373 if (ops->get_module_eeprom) 2374 return ops->get_module_eeprom(dev, ee, data); 2375 2376 return -EOPNOTSUPP; 2377 } 2378 2379 static int ethtool_get_module_eeprom(struct net_device *dev, 2380 void __user *useraddr) 2381 { 2382 int ret; 2383 struct ethtool_modinfo modinfo; 2384 2385 ret = ethtool_get_module_info_call(dev, &modinfo); 2386 if (ret) 2387 return ret; 2388 2389 return ethtool_get_any_eeprom(dev, useraddr, 2390 ethtool_get_module_eeprom_call, 2391 modinfo.eeprom_len); 2392 } 2393 2394 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) 2395 { 2396 switch (tuna->id) { 2397 case ETHTOOL_RX_COPYBREAK: 2398 case ETHTOOL_TX_COPYBREAK: 2399 if (tuna->len != sizeof(u32) || 2400 tuna->type_id != ETHTOOL_TUNABLE_U32) 2401 return -EINVAL; 2402 break; 2403 case ETHTOOL_PFC_PREVENTION_TOUT: 2404 if (tuna->len != sizeof(u16) || 2405 tuna->type_id != ETHTOOL_TUNABLE_U16) 2406 return -EINVAL; 2407 break; 2408 default: 2409 return -EINVAL; 2410 } 2411 2412 return 0; 2413 } 2414 2415 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) 2416 { 2417 int ret; 2418 struct ethtool_tunable tuna; 2419 const struct ethtool_ops *ops = dev->ethtool_ops; 2420 void *data; 2421 2422 if (!ops->get_tunable) 2423 return -EOPNOTSUPP; 2424 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2425 return -EFAULT; 2426 ret = ethtool_tunable_valid(&tuna); 2427 if (ret) 2428 return ret; 2429 data = kzalloc(tuna.len, GFP_USER); 2430 if (!data) 2431 return -ENOMEM; 2432 ret = ops->get_tunable(dev, &tuna, data); 2433 if (ret) 2434 goto out; 2435 useraddr += sizeof(tuna); 2436 ret = -EFAULT; 2437 if (copy_to_user(useraddr, data, tuna.len)) 2438 goto out; 2439 ret = 0; 2440 2441 out: 2442 kfree(data); 2443 return ret; 2444 } 2445 2446 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) 2447 { 2448 int ret; 2449 struct ethtool_tunable tuna; 2450 const struct ethtool_ops *ops = dev->ethtool_ops; 2451 void *data; 2452 2453 if (!ops->set_tunable) 2454 return -EOPNOTSUPP; 2455 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2456 return -EFAULT; 2457 ret = ethtool_tunable_valid(&tuna); 2458 if (ret) 2459 return ret; 2460 useraddr += sizeof(tuna); 2461 data = memdup_user(useraddr, tuna.len); 2462 if (IS_ERR(data)) 2463 return PTR_ERR(data); 2464 ret = ops->set_tunable(dev, &tuna, data); 2465 2466 kfree(data); 2467 return ret; 2468 } 2469 2470 static noinline_for_stack int 2471 ethtool_get_per_queue_coalesce(struct net_device *dev, 2472 void __user *useraddr, 2473 struct ethtool_per_queue_op *per_queue_opt) 2474 { 2475 u32 bit; 2476 int ret; 2477 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2478 2479 if (!dev->ethtool_ops->get_per_queue_coalesce) 2480 return -EOPNOTSUPP; 2481 2482 useraddr += sizeof(*per_queue_opt); 2483 2484 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, 2485 MAX_NUM_QUEUE); 2486 2487 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2488 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2489 2490 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); 2491 if (ret != 0) 2492 return ret; 2493 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2494 return -EFAULT; 2495 useraddr += sizeof(coalesce); 2496 } 2497 2498 return 0; 2499 } 2500 2501 static noinline_for_stack int 2502 ethtool_set_per_queue_coalesce(struct net_device *dev, 2503 void __user *useraddr, 2504 struct ethtool_per_queue_op *per_queue_opt) 2505 { 2506 u32 bit; 2507 int i, ret = 0; 2508 int n_queue; 2509 struct ethtool_coalesce *backup = NULL, *tmp = NULL; 2510 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2511 2512 if ((!dev->ethtool_ops->set_per_queue_coalesce) || 2513 (!dev->ethtool_ops->get_per_queue_coalesce)) 2514 return -EOPNOTSUPP; 2515 2516 useraddr += sizeof(*per_queue_opt); 2517 2518 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); 2519 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); 2520 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); 2521 if (!backup) 2522 return -ENOMEM; 2523 2524 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2525 struct ethtool_coalesce coalesce; 2526 2527 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); 2528 if (ret != 0) 2529 goto roll_back; 2530 2531 tmp++; 2532 2533 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { 2534 ret = -EFAULT; 2535 goto roll_back; 2536 } 2537 2538 if (!ethtool_set_coalesce_supported(dev, &coalesce)) { 2539 ret = -EOPNOTSUPP; 2540 goto roll_back; 2541 } 2542 2543 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); 2544 if (ret != 0) 2545 goto roll_back; 2546 2547 useraddr += sizeof(coalesce); 2548 } 2549 2550 roll_back: 2551 if (ret != 0) { 2552 tmp = backup; 2553 for_each_set_bit(i, queue_mask, bit) { 2554 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); 2555 tmp++; 2556 } 2557 } 2558 kfree(backup); 2559 2560 return ret; 2561 } 2562 2563 static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, 2564 void __user *useraddr, u32 sub_cmd) 2565 { 2566 struct ethtool_per_queue_op per_queue_opt; 2567 2568 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) 2569 return -EFAULT; 2570 2571 if (per_queue_opt.sub_command != sub_cmd) 2572 return -EINVAL; 2573 2574 switch (per_queue_opt.sub_command) { 2575 case ETHTOOL_GCOALESCE: 2576 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2577 case ETHTOOL_SCOALESCE: 2578 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2579 default: 2580 return -EOPNOTSUPP; 2581 } 2582 } 2583 2584 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) 2585 { 2586 switch (tuna->id) { 2587 case ETHTOOL_PHY_DOWNSHIFT: 2588 case ETHTOOL_PHY_FAST_LINK_DOWN: 2589 if (tuna->len != sizeof(u8) || 2590 tuna->type_id != ETHTOOL_TUNABLE_U8) 2591 return -EINVAL; 2592 break; 2593 case ETHTOOL_PHY_EDPD: 2594 if (tuna->len != sizeof(u16) || 2595 tuna->type_id != ETHTOOL_TUNABLE_U16) 2596 return -EINVAL; 2597 break; 2598 default: 2599 return -EINVAL; 2600 } 2601 2602 return 0; 2603 } 2604 2605 static int get_phy_tunable(struct net_device *dev, void __user *useraddr) 2606 { 2607 struct phy_device *phydev = dev->phydev; 2608 struct ethtool_tunable tuna; 2609 bool phy_drv_tunable; 2610 void *data; 2611 int ret; 2612 2613 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 2614 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) 2615 return -EOPNOTSUPP; 2616 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2617 return -EFAULT; 2618 ret = ethtool_phy_tunable_valid(&tuna); 2619 if (ret) 2620 return ret; 2621 data = kzalloc(tuna.len, GFP_USER); 2622 if (!data) 2623 return -ENOMEM; 2624 if (phy_drv_tunable) { 2625 mutex_lock(&phydev->lock); 2626 ret = phydev->drv->get_tunable(phydev, &tuna, data); 2627 mutex_unlock(&phydev->lock); 2628 } else { 2629 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); 2630 } 2631 if (ret) 2632 goto out; 2633 useraddr += sizeof(tuna); 2634 ret = -EFAULT; 2635 if (copy_to_user(useraddr, data, tuna.len)) 2636 goto out; 2637 ret = 0; 2638 2639 out: 2640 kfree(data); 2641 return ret; 2642 } 2643 2644 static int set_phy_tunable(struct net_device *dev, void __user *useraddr) 2645 { 2646 struct phy_device *phydev = dev->phydev; 2647 struct ethtool_tunable tuna; 2648 bool phy_drv_tunable; 2649 void *data; 2650 int ret; 2651 2652 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 2653 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) 2654 return -EOPNOTSUPP; 2655 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2656 return -EFAULT; 2657 ret = ethtool_phy_tunable_valid(&tuna); 2658 if (ret) 2659 return ret; 2660 useraddr += sizeof(tuna); 2661 data = memdup_user(useraddr, tuna.len); 2662 if (IS_ERR(data)) 2663 return PTR_ERR(data); 2664 if (phy_drv_tunable) { 2665 mutex_lock(&phydev->lock); 2666 ret = phydev->drv->set_tunable(phydev, &tuna, data); 2667 mutex_unlock(&phydev->lock); 2668 } else { 2669 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); 2670 } 2671 2672 kfree(data); 2673 return ret; 2674 } 2675 2676 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) 2677 { 2678 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; 2679 int rc; 2680 2681 if (!dev->ethtool_ops->get_fecparam) 2682 return -EOPNOTSUPP; 2683 2684 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); 2685 if (rc) 2686 return rc; 2687 2688 if (WARN_ON_ONCE(fecparam.reserved)) 2689 fecparam.reserved = 0; 2690 2691 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) 2692 return -EFAULT; 2693 return 0; 2694 } 2695 2696 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) 2697 { 2698 struct ethtool_fecparam fecparam; 2699 2700 if (!dev->ethtool_ops->set_fecparam) 2701 return -EOPNOTSUPP; 2702 2703 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) 2704 return -EFAULT; 2705 2706 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) 2707 return -EINVAL; 2708 2709 fecparam.active_fec = 0; 2710 fecparam.reserved = 0; 2711 2712 return dev->ethtool_ops->set_fecparam(dev, &fecparam); 2713 } 2714 2715 /* The main entry point in this file. Called from net/core/dev_ioctl.c */ 2716 2717 static int 2718 __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, 2719 u32 ethcmd, struct ethtool_devlink_compat *devlink_state) 2720 { 2721 struct net_device *dev; 2722 u32 sub_cmd; 2723 int rc; 2724 netdev_features_t old_features; 2725 2726 dev = __dev_get_by_name(net, ifr->ifr_name); 2727 if (!dev) 2728 return -ENODEV; 2729 2730 if (ethcmd == ETHTOOL_PERQUEUE) { 2731 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) 2732 return -EFAULT; 2733 } else { 2734 sub_cmd = ethcmd; 2735 } 2736 /* Allow some commands to be done by anyone */ 2737 switch (sub_cmd) { 2738 case ETHTOOL_GSET: 2739 case ETHTOOL_GDRVINFO: 2740 case ETHTOOL_GMSGLVL: 2741 case ETHTOOL_GLINK: 2742 case ETHTOOL_GCOALESCE: 2743 case ETHTOOL_GRINGPARAM: 2744 case ETHTOOL_GPAUSEPARAM: 2745 case ETHTOOL_GRXCSUM: 2746 case ETHTOOL_GTXCSUM: 2747 case ETHTOOL_GSG: 2748 case ETHTOOL_GSSET_INFO: 2749 case ETHTOOL_GSTRINGS: 2750 case ETHTOOL_GSTATS: 2751 case ETHTOOL_GPHYSTATS: 2752 case ETHTOOL_GTSO: 2753 case ETHTOOL_GPERMADDR: 2754 case ETHTOOL_GUFO: 2755 case ETHTOOL_GGSO: 2756 case ETHTOOL_GGRO: 2757 case ETHTOOL_GFLAGS: 2758 case ETHTOOL_GPFLAGS: 2759 case ETHTOOL_GRXFH: 2760 case ETHTOOL_GRXRINGS: 2761 case ETHTOOL_GRXCLSRLCNT: 2762 case ETHTOOL_GRXCLSRULE: 2763 case ETHTOOL_GRXCLSRLALL: 2764 case ETHTOOL_GRXFHINDIR: 2765 case ETHTOOL_GRSSH: 2766 case ETHTOOL_GFEATURES: 2767 case ETHTOOL_GCHANNELS: 2768 case ETHTOOL_GET_TS_INFO: 2769 case ETHTOOL_GEEE: 2770 case ETHTOOL_GTUNABLE: 2771 case ETHTOOL_PHY_GTUNABLE: 2772 case ETHTOOL_GLINKSETTINGS: 2773 case ETHTOOL_GFECPARAM: 2774 break; 2775 default: 2776 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 2777 return -EPERM; 2778 } 2779 2780 if (dev->dev.parent) 2781 pm_runtime_get_sync(dev->dev.parent); 2782 2783 if (!netif_device_present(dev)) { 2784 rc = -ENODEV; 2785 goto out; 2786 } 2787 2788 if (dev->ethtool_ops->begin) { 2789 rc = dev->ethtool_ops->begin(dev); 2790 if (rc < 0) 2791 goto out; 2792 } 2793 old_features = dev->features; 2794 2795 switch (ethcmd) { 2796 case ETHTOOL_GSET: 2797 rc = ethtool_get_settings(dev, useraddr); 2798 break; 2799 case ETHTOOL_SSET: 2800 rc = ethtool_set_settings(dev, useraddr); 2801 break; 2802 case ETHTOOL_GDRVINFO: 2803 rc = ethtool_get_drvinfo(dev, devlink_state); 2804 break; 2805 case ETHTOOL_GREGS: 2806 rc = ethtool_get_regs(dev, useraddr); 2807 break; 2808 case ETHTOOL_GWOL: 2809 rc = ethtool_get_wol(dev, useraddr); 2810 break; 2811 case ETHTOOL_SWOL: 2812 rc = ethtool_set_wol(dev, useraddr); 2813 break; 2814 case ETHTOOL_GMSGLVL: 2815 rc = ethtool_get_value(dev, useraddr, ethcmd, 2816 dev->ethtool_ops->get_msglevel); 2817 break; 2818 case ETHTOOL_SMSGLVL: 2819 rc = ethtool_set_value_void(dev, useraddr, 2820 dev->ethtool_ops->set_msglevel); 2821 if (!rc) 2822 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL); 2823 break; 2824 case ETHTOOL_GEEE: 2825 rc = ethtool_get_eee(dev, useraddr); 2826 break; 2827 case ETHTOOL_SEEE: 2828 rc = ethtool_set_eee(dev, useraddr); 2829 break; 2830 case ETHTOOL_NWAY_RST: 2831 rc = ethtool_nway_reset(dev); 2832 break; 2833 case ETHTOOL_GLINK: 2834 rc = ethtool_get_link(dev, useraddr); 2835 break; 2836 case ETHTOOL_GEEPROM: 2837 rc = ethtool_get_eeprom(dev, useraddr); 2838 break; 2839 case ETHTOOL_SEEPROM: 2840 rc = ethtool_set_eeprom(dev, useraddr); 2841 break; 2842 case ETHTOOL_GCOALESCE: 2843 rc = ethtool_get_coalesce(dev, useraddr); 2844 break; 2845 case ETHTOOL_SCOALESCE: 2846 rc = ethtool_set_coalesce(dev, useraddr); 2847 break; 2848 case ETHTOOL_GRINGPARAM: 2849 rc = ethtool_get_ringparam(dev, useraddr); 2850 break; 2851 case ETHTOOL_SRINGPARAM: 2852 rc = ethtool_set_ringparam(dev, useraddr); 2853 break; 2854 case ETHTOOL_GPAUSEPARAM: 2855 rc = ethtool_get_pauseparam(dev, useraddr); 2856 break; 2857 case ETHTOOL_SPAUSEPARAM: 2858 rc = ethtool_set_pauseparam(dev, useraddr); 2859 break; 2860 case ETHTOOL_TEST: 2861 rc = ethtool_self_test(dev, useraddr); 2862 break; 2863 case ETHTOOL_GSTRINGS: 2864 rc = ethtool_get_strings(dev, useraddr); 2865 break; 2866 case ETHTOOL_PHYS_ID: 2867 rc = ethtool_phys_id(dev, useraddr); 2868 break; 2869 case ETHTOOL_GSTATS: 2870 rc = ethtool_get_stats(dev, useraddr); 2871 break; 2872 case ETHTOOL_GPERMADDR: 2873 rc = ethtool_get_perm_addr(dev, useraddr); 2874 break; 2875 case ETHTOOL_GFLAGS: 2876 rc = ethtool_get_value(dev, useraddr, ethcmd, 2877 __ethtool_get_flags); 2878 break; 2879 case ETHTOOL_SFLAGS: 2880 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); 2881 break; 2882 case ETHTOOL_GPFLAGS: 2883 rc = ethtool_get_value(dev, useraddr, ethcmd, 2884 dev->ethtool_ops->get_priv_flags); 2885 if (!rc) 2886 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL); 2887 break; 2888 case ETHTOOL_SPFLAGS: 2889 rc = ethtool_set_value(dev, useraddr, 2890 dev->ethtool_ops->set_priv_flags); 2891 break; 2892 case ETHTOOL_GRXFH: 2893 case ETHTOOL_GRXRINGS: 2894 case ETHTOOL_GRXCLSRLCNT: 2895 case ETHTOOL_GRXCLSRULE: 2896 case ETHTOOL_GRXCLSRLALL: 2897 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); 2898 break; 2899 case ETHTOOL_SRXFH: 2900 case ETHTOOL_SRXCLSRLDEL: 2901 case ETHTOOL_SRXCLSRLINS: 2902 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); 2903 break; 2904 case ETHTOOL_FLASHDEV: 2905 rc = ethtool_flash_device(dev, devlink_state); 2906 break; 2907 case ETHTOOL_RESET: 2908 rc = ethtool_reset(dev, useraddr); 2909 break; 2910 case ETHTOOL_GSSET_INFO: 2911 rc = ethtool_get_sset_info(dev, useraddr); 2912 break; 2913 case ETHTOOL_GRXFHINDIR: 2914 rc = ethtool_get_rxfh_indir(dev, useraddr); 2915 break; 2916 case ETHTOOL_SRXFHINDIR: 2917 rc = ethtool_set_rxfh_indir(dev, useraddr); 2918 break; 2919 case ETHTOOL_GRSSH: 2920 rc = ethtool_get_rxfh(dev, useraddr); 2921 break; 2922 case ETHTOOL_SRSSH: 2923 rc = ethtool_set_rxfh(dev, useraddr); 2924 break; 2925 case ETHTOOL_GFEATURES: 2926 rc = ethtool_get_features(dev, useraddr); 2927 break; 2928 case ETHTOOL_SFEATURES: 2929 rc = ethtool_set_features(dev, useraddr); 2930 break; 2931 case ETHTOOL_GTXCSUM: 2932 case ETHTOOL_GRXCSUM: 2933 case ETHTOOL_GSG: 2934 case ETHTOOL_GTSO: 2935 case ETHTOOL_GGSO: 2936 case ETHTOOL_GGRO: 2937 rc = ethtool_get_one_feature(dev, useraddr, ethcmd); 2938 break; 2939 case ETHTOOL_STXCSUM: 2940 case ETHTOOL_SRXCSUM: 2941 case ETHTOOL_SSG: 2942 case ETHTOOL_STSO: 2943 case ETHTOOL_SGSO: 2944 case ETHTOOL_SGRO: 2945 rc = ethtool_set_one_feature(dev, useraddr, ethcmd); 2946 break; 2947 case ETHTOOL_GCHANNELS: 2948 rc = ethtool_get_channels(dev, useraddr); 2949 break; 2950 case ETHTOOL_SCHANNELS: 2951 rc = ethtool_set_channels(dev, useraddr); 2952 break; 2953 case ETHTOOL_SET_DUMP: 2954 rc = ethtool_set_dump(dev, useraddr); 2955 break; 2956 case ETHTOOL_GET_DUMP_FLAG: 2957 rc = ethtool_get_dump_flag(dev, useraddr); 2958 break; 2959 case ETHTOOL_GET_DUMP_DATA: 2960 rc = ethtool_get_dump_data(dev, useraddr); 2961 break; 2962 case ETHTOOL_GET_TS_INFO: 2963 rc = ethtool_get_ts_info(dev, useraddr); 2964 break; 2965 case ETHTOOL_GMODULEINFO: 2966 rc = ethtool_get_module_info(dev, useraddr); 2967 break; 2968 case ETHTOOL_GMODULEEEPROM: 2969 rc = ethtool_get_module_eeprom(dev, useraddr); 2970 break; 2971 case ETHTOOL_GTUNABLE: 2972 rc = ethtool_get_tunable(dev, useraddr); 2973 break; 2974 case ETHTOOL_STUNABLE: 2975 rc = ethtool_set_tunable(dev, useraddr); 2976 break; 2977 case ETHTOOL_GPHYSTATS: 2978 rc = ethtool_get_phy_stats(dev, useraddr); 2979 break; 2980 case ETHTOOL_PERQUEUE: 2981 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); 2982 break; 2983 case ETHTOOL_GLINKSETTINGS: 2984 rc = ethtool_get_link_ksettings(dev, useraddr); 2985 break; 2986 case ETHTOOL_SLINKSETTINGS: 2987 rc = ethtool_set_link_ksettings(dev, useraddr); 2988 break; 2989 case ETHTOOL_PHY_GTUNABLE: 2990 rc = get_phy_tunable(dev, useraddr); 2991 break; 2992 case ETHTOOL_PHY_STUNABLE: 2993 rc = set_phy_tunable(dev, useraddr); 2994 break; 2995 case ETHTOOL_GFECPARAM: 2996 rc = ethtool_get_fecparam(dev, useraddr); 2997 break; 2998 case ETHTOOL_SFECPARAM: 2999 rc = ethtool_set_fecparam(dev, useraddr); 3000 break; 3001 default: 3002 rc = -EOPNOTSUPP; 3003 } 3004 3005 if (dev->ethtool_ops->complete) 3006 dev->ethtool_ops->complete(dev); 3007 3008 if (old_features != dev->features) 3009 netdev_features_change(dev); 3010 out: 3011 if (dev->dev.parent) 3012 pm_runtime_put(dev->dev.parent); 3013 3014 return rc; 3015 } 3016 3017 int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) 3018 { 3019 struct ethtool_devlink_compat *state; 3020 u32 ethcmd; 3021 int rc; 3022 3023 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) 3024 return -EFAULT; 3025 3026 state = kzalloc(sizeof(*state), GFP_KERNEL); 3027 if (!state) 3028 return -ENOMEM; 3029 3030 switch (ethcmd) { 3031 case ETHTOOL_FLASHDEV: 3032 if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { 3033 rc = -EFAULT; 3034 goto exit_free; 3035 } 3036 state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; 3037 break; 3038 } 3039 3040 rtnl_lock(); 3041 rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); 3042 rtnl_unlock(); 3043 if (rc) 3044 goto exit_free; 3045 3046 switch (ethcmd) { 3047 case ETHTOOL_FLASHDEV: 3048 if (state->devlink) 3049 rc = devlink_compat_flash_update(state->devlink, 3050 state->efl.data); 3051 break; 3052 case ETHTOOL_GDRVINFO: 3053 if (state->devlink) 3054 devlink_compat_running_version(state->devlink, 3055 state->info.fw_version, 3056 sizeof(state->info.fw_version)); 3057 if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { 3058 rc = -EFAULT; 3059 goto exit_free; 3060 } 3061 break; 3062 } 3063 3064 exit_free: 3065 if (state->devlink) 3066 devlink_put(state->devlink); 3067 kfree(state); 3068 return rc; 3069 } 3070 3071 struct ethtool_rx_flow_key { 3072 struct flow_dissector_key_basic basic; 3073 union { 3074 struct flow_dissector_key_ipv4_addrs ipv4; 3075 struct flow_dissector_key_ipv6_addrs ipv6; 3076 }; 3077 struct flow_dissector_key_ports tp; 3078 struct flow_dissector_key_ip ip; 3079 struct flow_dissector_key_vlan vlan; 3080 struct flow_dissector_key_eth_addrs eth_addrs; 3081 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ 3082 3083 struct ethtool_rx_flow_match { 3084 struct flow_dissector dissector; 3085 struct ethtool_rx_flow_key key; 3086 struct ethtool_rx_flow_key mask; 3087 }; 3088 3089 struct ethtool_rx_flow_rule * 3090 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) 3091 { 3092 const struct ethtool_rx_flow_spec *fs = input->fs; 3093 static struct in6_addr zero_addr = {}; 3094 struct ethtool_rx_flow_match *match; 3095 struct ethtool_rx_flow_rule *flow; 3096 struct flow_action_entry *act; 3097 3098 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + 3099 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); 3100 if (!flow) 3101 return ERR_PTR(-ENOMEM); 3102 3103 /* ethtool_rx supports only one single action per rule. */ 3104 flow->rule = flow_rule_alloc(1); 3105 if (!flow->rule) { 3106 kfree(flow); 3107 return ERR_PTR(-ENOMEM); 3108 } 3109 3110 match = (struct ethtool_rx_flow_match *)flow->priv; 3111 flow->rule->match.dissector = &match->dissector; 3112 flow->rule->match.mask = &match->mask; 3113 flow->rule->match.key = &match->key; 3114 3115 match->mask.basic.n_proto = htons(0xffff); 3116 3117 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3118 case ETHER_FLOW: { 3119 const struct ethhdr *ether_spec, *ether_m_spec; 3120 3121 ether_spec = &fs->h_u.ether_spec; 3122 ether_m_spec = &fs->m_u.ether_spec; 3123 3124 if (!is_zero_ether_addr(ether_m_spec->h_source)) { 3125 ether_addr_copy(match->key.eth_addrs.src, 3126 ether_spec->h_source); 3127 ether_addr_copy(match->mask.eth_addrs.src, 3128 ether_m_spec->h_source); 3129 } 3130 if (!is_zero_ether_addr(ether_m_spec->h_dest)) { 3131 ether_addr_copy(match->key.eth_addrs.dst, 3132 ether_spec->h_dest); 3133 ether_addr_copy(match->mask.eth_addrs.dst, 3134 ether_m_spec->h_dest); 3135 } 3136 if (ether_m_spec->h_proto) { 3137 match->key.basic.n_proto = ether_spec->h_proto; 3138 match->mask.basic.n_proto = ether_m_spec->h_proto; 3139 } 3140 } 3141 break; 3142 case TCP_V4_FLOW: 3143 case UDP_V4_FLOW: { 3144 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; 3145 3146 match->key.basic.n_proto = htons(ETH_P_IP); 3147 3148 v4_spec = &fs->h_u.tcp_ip4_spec; 3149 v4_m_spec = &fs->m_u.tcp_ip4_spec; 3150 3151 if (v4_m_spec->ip4src) { 3152 match->key.ipv4.src = v4_spec->ip4src; 3153 match->mask.ipv4.src = v4_m_spec->ip4src; 3154 } 3155 if (v4_m_spec->ip4dst) { 3156 match->key.ipv4.dst = v4_spec->ip4dst; 3157 match->mask.ipv4.dst = v4_m_spec->ip4dst; 3158 } 3159 if (v4_m_spec->ip4src || 3160 v4_m_spec->ip4dst) { 3161 match->dissector.used_keys |= 3162 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS); 3163 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = 3164 offsetof(struct ethtool_rx_flow_key, ipv4); 3165 } 3166 if (v4_m_spec->psrc) { 3167 match->key.tp.src = v4_spec->psrc; 3168 match->mask.tp.src = v4_m_spec->psrc; 3169 } 3170 if (v4_m_spec->pdst) { 3171 match->key.tp.dst = v4_spec->pdst; 3172 match->mask.tp.dst = v4_m_spec->pdst; 3173 } 3174 if (v4_m_spec->psrc || 3175 v4_m_spec->pdst) { 3176 match->dissector.used_keys |= 3177 BIT(FLOW_DISSECTOR_KEY_PORTS); 3178 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3179 offsetof(struct ethtool_rx_flow_key, tp); 3180 } 3181 if (v4_m_spec->tos) { 3182 match->key.ip.tos = v4_spec->tos; 3183 match->mask.ip.tos = v4_m_spec->tos; 3184 match->dissector.used_keys |= 3185 BIT(FLOW_DISSECTOR_KEY_IP); 3186 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3187 offsetof(struct ethtool_rx_flow_key, ip); 3188 } 3189 } 3190 break; 3191 case TCP_V6_FLOW: 3192 case UDP_V6_FLOW: { 3193 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; 3194 3195 match->key.basic.n_proto = htons(ETH_P_IPV6); 3196 3197 v6_spec = &fs->h_u.tcp_ip6_spec; 3198 v6_m_spec = &fs->m_u.tcp_ip6_spec; 3199 if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr))) { 3200 memcpy(&match->key.ipv6.src, v6_spec->ip6src, 3201 sizeof(match->key.ipv6.src)); 3202 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, 3203 sizeof(match->mask.ipv6.src)); 3204 } 3205 if (memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) { 3206 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, 3207 sizeof(match->key.ipv6.dst)); 3208 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, 3209 sizeof(match->mask.ipv6.dst)); 3210 } 3211 if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr)) || 3212 memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) { 3213 match->dissector.used_keys |= 3214 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS); 3215 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = 3216 offsetof(struct ethtool_rx_flow_key, ipv6); 3217 } 3218 if (v6_m_spec->psrc) { 3219 match->key.tp.src = v6_spec->psrc; 3220 match->mask.tp.src = v6_m_spec->psrc; 3221 } 3222 if (v6_m_spec->pdst) { 3223 match->key.tp.dst = v6_spec->pdst; 3224 match->mask.tp.dst = v6_m_spec->pdst; 3225 } 3226 if (v6_m_spec->psrc || 3227 v6_m_spec->pdst) { 3228 match->dissector.used_keys |= 3229 BIT(FLOW_DISSECTOR_KEY_PORTS); 3230 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3231 offsetof(struct ethtool_rx_flow_key, tp); 3232 } 3233 if (v6_m_spec->tclass) { 3234 match->key.ip.tos = v6_spec->tclass; 3235 match->mask.ip.tos = v6_m_spec->tclass; 3236 match->dissector.used_keys |= 3237 BIT(FLOW_DISSECTOR_KEY_IP); 3238 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3239 offsetof(struct ethtool_rx_flow_key, ip); 3240 } 3241 } 3242 break; 3243 default: 3244 ethtool_rx_flow_rule_destroy(flow); 3245 return ERR_PTR(-EINVAL); 3246 } 3247 3248 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3249 case TCP_V4_FLOW: 3250 case TCP_V6_FLOW: 3251 match->key.basic.ip_proto = IPPROTO_TCP; 3252 match->mask.basic.ip_proto = 0xff; 3253 break; 3254 case UDP_V4_FLOW: 3255 case UDP_V6_FLOW: 3256 match->key.basic.ip_proto = IPPROTO_UDP; 3257 match->mask.basic.ip_proto = 0xff; 3258 break; 3259 } 3260 3261 match->dissector.used_keys |= BIT(FLOW_DISSECTOR_KEY_BASIC); 3262 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = 3263 offsetof(struct ethtool_rx_flow_key, basic); 3264 3265 if (fs->flow_type & FLOW_EXT) { 3266 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3267 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3268 3269 if (ext_m_spec->vlan_etype) { 3270 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; 3271 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; 3272 } 3273 3274 if (ext_m_spec->vlan_tci) { 3275 match->key.vlan.vlan_id = 3276 ntohs(ext_h_spec->vlan_tci) & 0x0fff; 3277 match->mask.vlan.vlan_id = 3278 ntohs(ext_m_spec->vlan_tci) & 0x0fff; 3279 3280 match->key.vlan.vlan_dei = 3281 !!(ext_h_spec->vlan_tci & htons(0x1000)); 3282 match->mask.vlan.vlan_dei = 3283 !!(ext_m_spec->vlan_tci & htons(0x1000)); 3284 3285 match->key.vlan.vlan_priority = 3286 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; 3287 match->mask.vlan.vlan_priority = 3288 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; 3289 } 3290 3291 if (ext_m_spec->vlan_etype || 3292 ext_m_spec->vlan_tci) { 3293 match->dissector.used_keys |= 3294 BIT(FLOW_DISSECTOR_KEY_VLAN); 3295 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = 3296 offsetof(struct ethtool_rx_flow_key, vlan); 3297 } 3298 } 3299 if (fs->flow_type & FLOW_MAC_EXT) { 3300 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3301 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3302 3303 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, 3304 ETH_ALEN); 3305 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, 3306 ETH_ALEN); 3307 3308 match->dissector.used_keys |= 3309 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS); 3310 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = 3311 offsetof(struct ethtool_rx_flow_key, eth_addrs); 3312 } 3313 3314 act = &flow->rule->action.entries[0]; 3315 switch (fs->ring_cookie) { 3316 case RX_CLS_FLOW_DISC: 3317 act->id = FLOW_ACTION_DROP; 3318 break; 3319 case RX_CLS_FLOW_WAKE: 3320 act->id = FLOW_ACTION_WAKE; 3321 break; 3322 default: 3323 act->id = FLOW_ACTION_QUEUE; 3324 if (fs->flow_type & FLOW_RSS) 3325 act->queue.ctx = input->rss_ctx; 3326 3327 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); 3328 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); 3329 break; 3330 } 3331 3332 return flow; 3333 } 3334 EXPORT_SYMBOL(ethtool_rx_flow_rule_create); 3335 3336 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) 3337 { 3338 kfree(flow->rule); 3339 kfree(flow); 3340 } 3341 EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); 3342