1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * net/core/ethtool.c - Ethtool ioctl handler 4 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx> 5 * 6 * This file is where we call all the ethtool_ops commands to get 7 * the information ethtool needs. 8 */ 9 10 #include <linux/compat.h> 11 #include <linux/etherdevice.h> 12 #include <linux/module.h> 13 #include <linux/types.h> 14 #include <linux/capability.h> 15 #include <linux/errno.h> 16 #include <linux/ethtool.h> 17 #include <linux/netdevice.h> 18 #include <linux/net_tstamp.h> 19 #include <linux/phy.h> 20 #include <linux/bitops.h> 21 #include <linux/uaccess.h> 22 #include <linux/vmalloc.h> 23 #include <linux/sfp.h> 24 #include <linux/slab.h> 25 #include <linux/rtnetlink.h> 26 #include <linux/sched/signal.h> 27 #include <linux/net.h> 28 #include <linux/pm_runtime.h> 29 #include <net/devlink.h> 30 #include <net/xdp_sock_drv.h> 31 #include <net/flow_offload.h> 32 #include <linux/ethtool_netlink.h> 33 #include <generated/utsrelease.h> 34 #include "common.h" 35 36 /* State held across locks and calls for commands which have devlink fallback */ 37 struct ethtool_devlink_compat { 38 struct devlink *devlink; 39 union { 40 struct ethtool_flash efl; 41 struct ethtool_drvinfo info; 42 }; 43 }; 44 45 static struct devlink *netdev_to_devlink_get(struct net_device *dev) 46 { 47 struct devlink_port *devlink_port; 48 49 if (!dev->netdev_ops->ndo_get_devlink_port) 50 return NULL; 51 52 devlink_port = dev->netdev_ops->ndo_get_devlink_port(dev); 53 if (!devlink_port) 54 return NULL; 55 56 return devlink_try_get(devlink_port->devlink); 57 } 58 59 /* 60 * Some useful ethtool_ops methods that're device independent. 61 * If we find that all drivers want to do the same thing here, 62 * we can turn these into dev_() function calls. 63 */ 64 65 u32 ethtool_op_get_link(struct net_device *dev) 66 { 67 return netif_carrier_ok(dev) ? 1 : 0; 68 } 69 EXPORT_SYMBOL(ethtool_op_get_link); 70 71 int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info) 72 { 73 info->so_timestamping = 74 SOF_TIMESTAMPING_TX_SOFTWARE | 75 SOF_TIMESTAMPING_RX_SOFTWARE | 76 SOF_TIMESTAMPING_SOFTWARE; 77 info->phc_index = -1; 78 return 0; 79 } 80 EXPORT_SYMBOL(ethtool_op_get_ts_info); 81 82 /* Handlers for each ethtool command */ 83 84 static int ethtool_get_features(struct net_device *dev, void __user *useraddr) 85 { 86 struct ethtool_gfeatures cmd = { 87 .cmd = ETHTOOL_GFEATURES, 88 .size = ETHTOOL_DEV_FEATURE_WORDS, 89 }; 90 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 91 u32 __user *sizeaddr; 92 u32 copy_size; 93 int i; 94 95 /* in case feature bits run out again */ 96 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); 97 98 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 99 features[i].available = (u32)(dev->hw_features >> (32 * i)); 100 features[i].requested = (u32)(dev->wanted_features >> (32 * i)); 101 features[i].active = (u32)(dev->features >> (32 * i)); 102 features[i].never_changed = 103 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); 104 } 105 106 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); 107 if (get_user(copy_size, sizeaddr)) 108 return -EFAULT; 109 110 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) 111 copy_size = ETHTOOL_DEV_FEATURE_WORDS; 112 113 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 114 return -EFAULT; 115 useraddr += sizeof(cmd); 116 if (copy_to_user(useraddr, features, 117 array_size(copy_size, sizeof(*features)))) 118 return -EFAULT; 119 120 return 0; 121 } 122 123 static int ethtool_set_features(struct net_device *dev, void __user *useraddr) 124 { 125 struct ethtool_sfeatures cmd; 126 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 127 netdev_features_t wanted = 0, valid = 0; 128 int i, ret = 0; 129 130 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 131 return -EFAULT; 132 useraddr += sizeof(cmd); 133 134 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) 135 return -EINVAL; 136 137 if (copy_from_user(features, useraddr, sizeof(features))) 138 return -EFAULT; 139 140 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 141 valid |= (netdev_features_t)features[i].valid << (32 * i); 142 wanted |= (netdev_features_t)features[i].requested << (32 * i); 143 } 144 145 if (valid & ~NETIF_F_ETHTOOL_BITS) 146 return -EINVAL; 147 148 if (valid & ~dev->hw_features) { 149 valid &= dev->hw_features; 150 ret |= ETHTOOL_F_UNSUPPORTED; 151 } 152 153 dev->wanted_features &= ~valid; 154 dev->wanted_features |= wanted & valid; 155 __netdev_update_features(dev); 156 157 if ((dev->wanted_features ^ dev->features) & valid) 158 ret |= ETHTOOL_F_WISH; 159 160 return ret; 161 } 162 163 static int __ethtool_get_sset_count(struct net_device *dev, int sset) 164 { 165 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 166 const struct ethtool_ops *ops = dev->ethtool_ops; 167 168 if (sset == ETH_SS_FEATURES) 169 return ARRAY_SIZE(netdev_features_strings); 170 171 if (sset == ETH_SS_RSS_HASH_FUNCS) 172 return ARRAY_SIZE(rss_hash_func_strings); 173 174 if (sset == ETH_SS_TUNABLES) 175 return ARRAY_SIZE(tunable_strings); 176 177 if (sset == ETH_SS_PHY_TUNABLES) 178 return ARRAY_SIZE(phy_tunable_strings); 179 180 if (sset == ETH_SS_PHY_STATS && dev->phydev && 181 !ops->get_ethtool_phy_stats && 182 phy_ops && phy_ops->get_sset_count) 183 return phy_ops->get_sset_count(dev->phydev); 184 185 if (sset == ETH_SS_LINK_MODES) 186 return __ETHTOOL_LINK_MODE_MASK_NBITS; 187 188 if (ops->get_sset_count && ops->get_strings) 189 return ops->get_sset_count(dev, sset); 190 else 191 return -EOPNOTSUPP; 192 } 193 194 static void __ethtool_get_strings(struct net_device *dev, 195 u32 stringset, u8 *data) 196 { 197 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 198 const struct ethtool_ops *ops = dev->ethtool_ops; 199 200 if (stringset == ETH_SS_FEATURES) 201 memcpy(data, netdev_features_strings, 202 sizeof(netdev_features_strings)); 203 else if (stringset == ETH_SS_RSS_HASH_FUNCS) 204 memcpy(data, rss_hash_func_strings, 205 sizeof(rss_hash_func_strings)); 206 else if (stringset == ETH_SS_TUNABLES) 207 memcpy(data, tunable_strings, sizeof(tunable_strings)); 208 else if (stringset == ETH_SS_PHY_TUNABLES) 209 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); 210 else if (stringset == ETH_SS_PHY_STATS && dev->phydev && 211 !ops->get_ethtool_phy_stats && phy_ops && 212 phy_ops->get_strings) 213 phy_ops->get_strings(dev->phydev, data); 214 else if (stringset == ETH_SS_LINK_MODES) 215 memcpy(data, link_mode_names, 216 __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN); 217 else 218 /* ops->get_strings is valid because checked earlier */ 219 ops->get_strings(dev, stringset, data); 220 } 221 222 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) 223 { 224 /* feature masks of legacy discrete ethtool ops */ 225 226 switch (eth_cmd) { 227 case ETHTOOL_GTXCSUM: 228 case ETHTOOL_STXCSUM: 229 return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC | 230 NETIF_F_SCTP_CRC; 231 case ETHTOOL_GRXCSUM: 232 case ETHTOOL_SRXCSUM: 233 return NETIF_F_RXCSUM; 234 case ETHTOOL_GSG: 235 case ETHTOOL_SSG: 236 return NETIF_F_SG | NETIF_F_FRAGLIST; 237 case ETHTOOL_GTSO: 238 case ETHTOOL_STSO: 239 return NETIF_F_ALL_TSO; 240 case ETHTOOL_GGSO: 241 case ETHTOOL_SGSO: 242 return NETIF_F_GSO; 243 case ETHTOOL_GGRO: 244 case ETHTOOL_SGRO: 245 return NETIF_F_GRO; 246 default: 247 BUG(); 248 } 249 } 250 251 static int ethtool_get_one_feature(struct net_device *dev, 252 char __user *useraddr, u32 ethcmd) 253 { 254 netdev_features_t mask = ethtool_get_feature_mask(ethcmd); 255 struct ethtool_value edata = { 256 .cmd = ethcmd, 257 .data = !!(dev->features & mask), 258 }; 259 260 if (copy_to_user(useraddr, &edata, sizeof(edata))) 261 return -EFAULT; 262 return 0; 263 } 264 265 static int ethtool_set_one_feature(struct net_device *dev, 266 void __user *useraddr, u32 ethcmd) 267 { 268 struct ethtool_value edata; 269 netdev_features_t mask; 270 271 if (copy_from_user(&edata, useraddr, sizeof(edata))) 272 return -EFAULT; 273 274 mask = ethtool_get_feature_mask(ethcmd); 275 mask &= dev->hw_features; 276 if (!mask) 277 return -EOPNOTSUPP; 278 279 if (edata.data) 280 dev->wanted_features |= mask; 281 else 282 dev->wanted_features &= ~mask; 283 284 __netdev_update_features(dev); 285 286 return 0; 287 } 288 289 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ 290 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) 291 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ 292 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ 293 NETIF_F_RXHASH) 294 295 static u32 __ethtool_get_flags(struct net_device *dev) 296 { 297 u32 flags = 0; 298 299 if (dev->features & NETIF_F_LRO) 300 flags |= ETH_FLAG_LRO; 301 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 302 flags |= ETH_FLAG_RXVLAN; 303 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) 304 flags |= ETH_FLAG_TXVLAN; 305 if (dev->features & NETIF_F_NTUPLE) 306 flags |= ETH_FLAG_NTUPLE; 307 if (dev->features & NETIF_F_RXHASH) 308 flags |= ETH_FLAG_RXHASH; 309 310 return flags; 311 } 312 313 static int __ethtool_set_flags(struct net_device *dev, u32 data) 314 { 315 netdev_features_t features = 0, changed; 316 317 if (data & ~ETH_ALL_FLAGS) 318 return -EINVAL; 319 320 if (data & ETH_FLAG_LRO) 321 features |= NETIF_F_LRO; 322 if (data & ETH_FLAG_RXVLAN) 323 features |= NETIF_F_HW_VLAN_CTAG_RX; 324 if (data & ETH_FLAG_TXVLAN) 325 features |= NETIF_F_HW_VLAN_CTAG_TX; 326 if (data & ETH_FLAG_NTUPLE) 327 features |= NETIF_F_NTUPLE; 328 if (data & ETH_FLAG_RXHASH) 329 features |= NETIF_F_RXHASH; 330 331 /* allow changing only bits set in hw_features */ 332 changed = (features ^ dev->features) & ETH_ALL_FEATURES; 333 if (changed & ~dev->hw_features) 334 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; 335 336 dev->wanted_features = 337 (dev->wanted_features & ~changed) | (features & changed); 338 339 __netdev_update_features(dev); 340 341 return 0; 342 } 343 344 /* Given two link masks, AND them together and save the result in dst. */ 345 void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, 346 struct ethtool_link_ksettings *src) 347 { 348 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); 349 unsigned int idx = 0; 350 351 for (; idx < size; idx++) { 352 dst->link_modes.supported[idx] &= 353 src->link_modes.supported[idx]; 354 dst->link_modes.advertising[idx] &= 355 src->link_modes.advertising[idx]; 356 } 357 } 358 EXPORT_SYMBOL(ethtool_intersect_link_masks); 359 360 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, 361 u32 legacy_u32) 362 { 363 linkmode_zero(dst); 364 dst[0] = legacy_u32; 365 } 366 EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); 367 368 /* return false if src had higher bits set. lower bits always updated. */ 369 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, 370 const unsigned long *src) 371 { 372 bool retval = true; 373 374 /* TODO: following test will soon always be true */ 375 if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) { 376 __ETHTOOL_DECLARE_LINK_MODE_MASK(ext); 377 378 linkmode_zero(ext); 379 bitmap_fill(ext, 32); 380 bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS); 381 if (linkmode_intersects(ext, src)) { 382 /* src mask goes beyond bit 31 */ 383 retval = false; 384 } 385 } 386 *legacy_u32 = src[0]; 387 return retval; 388 } 389 EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); 390 391 /* return false if ksettings link modes had higher bits 392 * set. legacy_settings always updated (best effort) 393 */ 394 static bool 395 convert_link_ksettings_to_legacy_settings( 396 struct ethtool_cmd *legacy_settings, 397 const struct ethtool_link_ksettings *link_ksettings) 398 { 399 bool retval = true; 400 401 memset(legacy_settings, 0, sizeof(*legacy_settings)); 402 /* this also clears the deprecated fields in legacy structure: 403 * __u8 transceiver; 404 * __u32 maxtxpkt; 405 * __u32 maxrxpkt; 406 */ 407 408 retval &= ethtool_convert_link_mode_to_legacy_u32( 409 &legacy_settings->supported, 410 link_ksettings->link_modes.supported); 411 retval &= ethtool_convert_link_mode_to_legacy_u32( 412 &legacy_settings->advertising, 413 link_ksettings->link_modes.advertising); 414 retval &= ethtool_convert_link_mode_to_legacy_u32( 415 &legacy_settings->lp_advertising, 416 link_ksettings->link_modes.lp_advertising); 417 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); 418 legacy_settings->duplex 419 = link_ksettings->base.duplex; 420 legacy_settings->port 421 = link_ksettings->base.port; 422 legacy_settings->phy_address 423 = link_ksettings->base.phy_address; 424 legacy_settings->autoneg 425 = link_ksettings->base.autoneg; 426 legacy_settings->mdio_support 427 = link_ksettings->base.mdio_support; 428 legacy_settings->eth_tp_mdix 429 = link_ksettings->base.eth_tp_mdix; 430 legacy_settings->eth_tp_mdix_ctrl 431 = link_ksettings->base.eth_tp_mdix_ctrl; 432 legacy_settings->transceiver 433 = link_ksettings->base.transceiver; 434 return retval; 435 } 436 437 /* number of 32-bit words to store the user's link mode bitmaps */ 438 #define __ETHTOOL_LINK_MODE_MASK_NU32 \ 439 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) 440 441 /* layout of the struct passed from/to userland */ 442 struct ethtool_link_usettings { 443 struct ethtool_link_settings base; 444 struct { 445 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; 446 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 447 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 448 } link_modes; 449 }; 450 451 /* Internal kernel helper to query a device ethtool_link_settings. */ 452 int __ethtool_get_link_ksettings(struct net_device *dev, 453 struct ethtool_link_ksettings *link_ksettings) 454 { 455 ASSERT_RTNL(); 456 457 if (!dev->ethtool_ops->get_link_ksettings) 458 return -EOPNOTSUPP; 459 460 memset(link_ksettings, 0, sizeof(*link_ksettings)); 461 return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings); 462 } 463 EXPORT_SYMBOL(__ethtool_get_link_ksettings); 464 465 /* convert ethtool_link_usettings in user space to a kernel internal 466 * ethtool_link_ksettings. return 0 on success, errno on error. 467 */ 468 static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, 469 const void __user *from) 470 { 471 struct ethtool_link_usettings link_usettings; 472 473 if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) 474 return -EFAULT; 475 476 memcpy(&to->base, &link_usettings.base, sizeof(to->base)); 477 bitmap_from_arr32(to->link_modes.supported, 478 link_usettings.link_modes.supported, 479 __ETHTOOL_LINK_MODE_MASK_NBITS); 480 bitmap_from_arr32(to->link_modes.advertising, 481 link_usettings.link_modes.advertising, 482 __ETHTOOL_LINK_MODE_MASK_NBITS); 483 bitmap_from_arr32(to->link_modes.lp_advertising, 484 link_usettings.link_modes.lp_advertising, 485 __ETHTOOL_LINK_MODE_MASK_NBITS); 486 487 return 0; 488 } 489 490 /* Check if the user is trying to change anything besides speed/duplex */ 491 bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd) 492 { 493 struct ethtool_link_settings base2 = {}; 494 495 base2.speed = cmd->base.speed; 496 base2.port = PORT_OTHER; 497 base2.duplex = cmd->base.duplex; 498 base2.cmd = cmd->base.cmd; 499 base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords; 500 501 return !memcmp(&base2, &cmd->base, sizeof(base2)) && 502 bitmap_empty(cmd->link_modes.supported, 503 __ETHTOOL_LINK_MODE_MASK_NBITS) && 504 bitmap_empty(cmd->link_modes.lp_advertising, 505 __ETHTOOL_LINK_MODE_MASK_NBITS); 506 } 507 508 /* convert a kernel internal ethtool_link_ksettings to 509 * ethtool_link_usettings in user space. return 0 on success, errno on 510 * error. 511 */ 512 static int 513 store_link_ksettings_for_user(void __user *to, 514 const struct ethtool_link_ksettings *from) 515 { 516 struct ethtool_link_usettings link_usettings; 517 518 memcpy(&link_usettings, from, sizeof(link_usettings)); 519 bitmap_to_arr32(link_usettings.link_modes.supported, 520 from->link_modes.supported, 521 __ETHTOOL_LINK_MODE_MASK_NBITS); 522 bitmap_to_arr32(link_usettings.link_modes.advertising, 523 from->link_modes.advertising, 524 __ETHTOOL_LINK_MODE_MASK_NBITS); 525 bitmap_to_arr32(link_usettings.link_modes.lp_advertising, 526 from->link_modes.lp_advertising, 527 __ETHTOOL_LINK_MODE_MASK_NBITS); 528 529 if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) 530 return -EFAULT; 531 532 return 0; 533 } 534 535 /* Query device for its ethtool_link_settings. */ 536 static int ethtool_get_link_ksettings(struct net_device *dev, 537 void __user *useraddr) 538 { 539 int err = 0; 540 struct ethtool_link_ksettings link_ksettings; 541 542 ASSERT_RTNL(); 543 if (!dev->ethtool_ops->get_link_ksettings) 544 return -EOPNOTSUPP; 545 546 /* handle bitmap nbits handshake */ 547 if (copy_from_user(&link_ksettings.base, useraddr, 548 sizeof(link_ksettings.base))) 549 return -EFAULT; 550 551 if (__ETHTOOL_LINK_MODE_MASK_NU32 552 != link_ksettings.base.link_mode_masks_nwords) { 553 /* wrong link mode nbits requested */ 554 memset(&link_ksettings, 0, sizeof(link_ksettings)); 555 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 556 /* send back number of words required as negative val */ 557 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, 558 "need too many bits for link modes!"); 559 link_ksettings.base.link_mode_masks_nwords 560 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); 561 562 /* copy the base fields back to user, not the link 563 * mode bitmaps 564 */ 565 if (copy_to_user(useraddr, &link_ksettings.base, 566 sizeof(link_ksettings.base))) 567 return -EFAULT; 568 569 return 0; 570 } 571 572 /* handshake successful: user/kernel agree on 573 * link_mode_masks_nwords 574 */ 575 576 memset(&link_ksettings, 0, sizeof(link_ksettings)); 577 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 578 if (err < 0) 579 return err; 580 581 /* make sure we tell the right values to user */ 582 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 583 link_ksettings.base.link_mode_masks_nwords 584 = __ETHTOOL_LINK_MODE_MASK_NU32; 585 link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED; 586 link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED; 587 588 return store_link_ksettings_for_user(useraddr, &link_ksettings); 589 } 590 591 /* Update device ethtool_link_settings. */ 592 static int ethtool_set_link_ksettings(struct net_device *dev, 593 void __user *useraddr) 594 { 595 int err; 596 struct ethtool_link_ksettings link_ksettings; 597 598 ASSERT_RTNL(); 599 600 if (!dev->ethtool_ops->set_link_ksettings) 601 return -EOPNOTSUPP; 602 603 /* make sure nbits field has expected value */ 604 if (copy_from_user(&link_ksettings.base, useraddr, 605 sizeof(link_ksettings.base))) 606 return -EFAULT; 607 608 if (__ETHTOOL_LINK_MODE_MASK_NU32 609 != link_ksettings.base.link_mode_masks_nwords) 610 return -EINVAL; 611 612 /* copy the whole structure, now that we know it has expected 613 * format 614 */ 615 err = load_link_ksettings_from_user(&link_ksettings, useraddr); 616 if (err) 617 return err; 618 619 /* re-check nwords field, just in case */ 620 if (__ETHTOOL_LINK_MODE_MASK_NU32 621 != link_ksettings.base.link_mode_masks_nwords) 622 return -EINVAL; 623 624 if (link_ksettings.base.master_slave_cfg || 625 link_ksettings.base.master_slave_state) 626 return -EINVAL; 627 628 err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 629 if (err >= 0) { 630 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); 631 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); 632 } 633 return err; 634 } 635 636 int ethtool_virtdev_set_link_ksettings(struct net_device *dev, 637 const struct ethtool_link_ksettings *cmd, 638 u32 *dev_speed, u8 *dev_duplex) 639 { 640 u32 speed; 641 u8 duplex; 642 643 speed = cmd->base.speed; 644 duplex = cmd->base.duplex; 645 /* don't allow custom speed and duplex */ 646 if (!ethtool_validate_speed(speed) || 647 !ethtool_validate_duplex(duplex) || 648 !ethtool_virtdev_validate_cmd(cmd)) 649 return -EINVAL; 650 *dev_speed = speed; 651 *dev_duplex = duplex; 652 653 return 0; 654 } 655 EXPORT_SYMBOL(ethtool_virtdev_set_link_ksettings); 656 657 /* Query device for its ethtool_cmd settings. 658 * 659 * Backward compatibility note: for compatibility with legacy ethtool, this is 660 * now implemented via get_link_ksettings. When driver reports higher link mode 661 * bits, a kernel warning is logged once (with name of 1st driver/device) to 662 * recommend user to upgrade ethtool, but the command is successful (only the 663 * lower link mode bits reported back to user). Deprecated fields from 664 * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero. 665 */ 666 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) 667 { 668 struct ethtool_link_ksettings link_ksettings; 669 struct ethtool_cmd cmd; 670 int err; 671 672 ASSERT_RTNL(); 673 if (!dev->ethtool_ops->get_link_ksettings) 674 return -EOPNOTSUPP; 675 676 memset(&link_ksettings, 0, sizeof(link_ksettings)); 677 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 678 if (err < 0) 679 return err; 680 convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings); 681 682 /* send a sensible cmd tag back to user */ 683 cmd.cmd = ETHTOOL_GSET; 684 685 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 686 return -EFAULT; 687 688 return 0; 689 } 690 691 /* Update device link settings with given ethtool_cmd. 692 * 693 * Backward compatibility note: for compatibility with legacy ethtool, this is 694 * now always implemented via set_link_settings. When user's request updates 695 * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel 696 * warning is logged once (with name of 1st driver/device) to recommend user to 697 * upgrade ethtool, and the request is rejected. 698 */ 699 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) 700 { 701 struct ethtool_link_ksettings link_ksettings; 702 struct ethtool_cmd cmd; 703 int ret; 704 705 ASSERT_RTNL(); 706 707 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 708 return -EFAULT; 709 if (!dev->ethtool_ops->set_link_ksettings) 710 return -EOPNOTSUPP; 711 712 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd)) 713 return -EINVAL; 714 link_ksettings.base.link_mode_masks_nwords = 715 __ETHTOOL_LINK_MODE_MASK_NU32; 716 ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 717 if (ret >= 0) { 718 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); 719 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); 720 } 721 return ret; 722 } 723 724 static int 725 ethtool_get_drvinfo(struct net_device *dev, struct ethtool_devlink_compat *rsp) 726 { 727 const struct ethtool_ops *ops = dev->ethtool_ops; 728 729 rsp->info.cmd = ETHTOOL_GDRVINFO; 730 strlcpy(rsp->info.version, UTS_RELEASE, sizeof(rsp->info.version)); 731 if (ops->get_drvinfo) { 732 ops->get_drvinfo(dev, &rsp->info); 733 } else if (dev->dev.parent && dev->dev.parent->driver) { 734 strlcpy(rsp->info.bus_info, dev_name(dev->dev.parent), 735 sizeof(rsp->info.bus_info)); 736 strlcpy(rsp->info.driver, dev->dev.parent->driver->name, 737 sizeof(rsp->info.driver)); 738 } else if (dev->rtnl_link_ops) { 739 strlcpy(rsp->info.driver, dev->rtnl_link_ops->kind, 740 sizeof(rsp->info.driver)); 741 } else { 742 return -EOPNOTSUPP; 743 } 744 745 /* 746 * this method of obtaining string set info is deprecated; 747 * Use ETHTOOL_GSSET_INFO instead. 748 */ 749 if (ops->get_sset_count) { 750 int rc; 751 752 rc = ops->get_sset_count(dev, ETH_SS_TEST); 753 if (rc >= 0) 754 rsp->info.testinfo_len = rc; 755 rc = ops->get_sset_count(dev, ETH_SS_STATS); 756 if (rc >= 0) 757 rsp->info.n_stats = rc; 758 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); 759 if (rc >= 0) 760 rsp->info.n_priv_flags = rc; 761 } 762 if (ops->get_regs_len) { 763 int ret = ops->get_regs_len(dev); 764 765 if (ret > 0) 766 rsp->info.regdump_len = ret; 767 } 768 769 if (ops->get_eeprom_len) 770 rsp->info.eedump_len = ops->get_eeprom_len(dev); 771 772 if (!rsp->info.fw_version[0]) 773 rsp->devlink = netdev_to_devlink_get(dev); 774 775 return 0; 776 } 777 778 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, 779 void __user *useraddr) 780 { 781 struct ethtool_sset_info info; 782 u64 sset_mask; 783 int i, idx = 0, n_bits = 0, ret, rc; 784 u32 *info_buf = NULL; 785 786 if (copy_from_user(&info, useraddr, sizeof(info))) 787 return -EFAULT; 788 789 /* store copy of mask, because we zero struct later on */ 790 sset_mask = info.sset_mask; 791 if (!sset_mask) 792 return 0; 793 794 /* calculate size of return buffer */ 795 n_bits = hweight64(sset_mask); 796 797 memset(&info, 0, sizeof(info)); 798 info.cmd = ETHTOOL_GSSET_INFO; 799 800 info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER); 801 if (!info_buf) 802 return -ENOMEM; 803 804 /* 805 * fill return buffer based on input bitmask and successful 806 * get_sset_count return 807 */ 808 for (i = 0; i < 64; i++) { 809 if (!(sset_mask & (1ULL << i))) 810 continue; 811 812 rc = __ethtool_get_sset_count(dev, i); 813 if (rc >= 0) { 814 info.sset_mask |= (1ULL << i); 815 info_buf[idx++] = rc; 816 } 817 } 818 819 ret = -EFAULT; 820 if (copy_to_user(useraddr, &info, sizeof(info))) 821 goto out; 822 823 useraddr += offsetof(struct ethtool_sset_info, data); 824 if (copy_to_user(useraddr, info_buf, array_size(idx, sizeof(u32)))) 825 goto out; 826 827 ret = 0; 828 829 out: 830 kfree(info_buf); 831 return ret; 832 } 833 834 static noinline_for_stack int 835 ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc, 836 const struct compat_ethtool_rxnfc __user *useraddr, 837 size_t size) 838 { 839 struct compat_ethtool_rxnfc crxnfc = {}; 840 841 /* We expect there to be holes between fs.m_ext and 842 * fs.ring_cookie and at the end of fs, but nowhere else. 843 * On non-x86, no conversion should be needed. 844 */ 845 BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) && 846 sizeof(struct compat_ethtool_rxnfc) != 847 sizeof(struct ethtool_rxnfc)); 848 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) + 849 sizeof(useraddr->fs.m_ext) != 850 offsetof(struct ethtool_rxnfc, fs.m_ext) + 851 sizeof(rxnfc->fs.m_ext)); 852 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) - 853 offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) != 854 offsetof(struct ethtool_rxnfc, fs.location) - 855 offsetof(struct ethtool_rxnfc, fs.ring_cookie)); 856 857 if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc)))) 858 return -EFAULT; 859 860 *rxnfc = (struct ethtool_rxnfc) { 861 .cmd = crxnfc.cmd, 862 .flow_type = crxnfc.flow_type, 863 .data = crxnfc.data, 864 .fs = { 865 .flow_type = crxnfc.fs.flow_type, 866 .h_u = crxnfc.fs.h_u, 867 .h_ext = crxnfc.fs.h_ext, 868 .m_u = crxnfc.fs.m_u, 869 .m_ext = crxnfc.fs.m_ext, 870 .ring_cookie = crxnfc.fs.ring_cookie, 871 .location = crxnfc.fs.location, 872 }, 873 .rule_cnt = crxnfc.rule_cnt, 874 }; 875 876 return 0; 877 } 878 879 static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc, 880 const void __user *useraddr, 881 size_t size) 882 { 883 if (compat_need_64bit_alignment_fixup()) 884 return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size); 885 886 if (copy_from_user(rxnfc, useraddr, size)) 887 return -EFAULT; 888 889 return 0; 890 } 891 892 static int ethtool_rxnfc_copy_to_compat(void __user *useraddr, 893 const struct ethtool_rxnfc *rxnfc, 894 size_t size, const u32 *rule_buf) 895 { 896 struct compat_ethtool_rxnfc crxnfc; 897 898 memset(&crxnfc, 0, sizeof(crxnfc)); 899 crxnfc = (struct compat_ethtool_rxnfc) { 900 .cmd = rxnfc->cmd, 901 .flow_type = rxnfc->flow_type, 902 .data = rxnfc->data, 903 .fs = { 904 .flow_type = rxnfc->fs.flow_type, 905 .h_u = rxnfc->fs.h_u, 906 .h_ext = rxnfc->fs.h_ext, 907 .m_u = rxnfc->fs.m_u, 908 .m_ext = rxnfc->fs.m_ext, 909 .ring_cookie = rxnfc->fs.ring_cookie, 910 .location = rxnfc->fs.location, 911 }, 912 .rule_cnt = rxnfc->rule_cnt, 913 }; 914 915 if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc)))) 916 return -EFAULT; 917 918 return 0; 919 } 920 921 static int ethtool_rxnfc_copy_to_user(void __user *useraddr, 922 const struct ethtool_rxnfc *rxnfc, 923 size_t size, const u32 *rule_buf) 924 { 925 int ret; 926 927 if (compat_need_64bit_alignment_fixup()) { 928 ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size, 929 rule_buf); 930 useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs); 931 } else { 932 ret = copy_to_user(useraddr, rxnfc, size); 933 useraddr += offsetof(struct ethtool_rxnfc, rule_locs); 934 } 935 936 if (ret) 937 return -EFAULT; 938 939 if (rule_buf) { 940 if (copy_to_user(useraddr, rule_buf, 941 rxnfc->rule_cnt * sizeof(u32))) 942 return -EFAULT; 943 } 944 945 return 0; 946 } 947 948 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, 949 u32 cmd, void __user *useraddr) 950 { 951 struct ethtool_rxnfc info; 952 size_t info_size = sizeof(info); 953 int rc; 954 955 if (!dev->ethtool_ops->set_rxnfc) 956 return -EOPNOTSUPP; 957 958 /* struct ethtool_rxnfc was originally defined for 959 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 960 * members. User-space might still be using that 961 * definition. */ 962 if (cmd == ETHTOOL_SRXFH) 963 info_size = (offsetof(struct ethtool_rxnfc, data) + 964 sizeof(info.data)); 965 966 if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size)) 967 return -EFAULT; 968 969 rc = dev->ethtool_ops->set_rxnfc(dev, &info); 970 if (rc) 971 return rc; 972 973 if (cmd == ETHTOOL_SRXCLSRLINS && 974 ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL)) 975 return -EFAULT; 976 977 return 0; 978 } 979 980 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, 981 u32 cmd, void __user *useraddr) 982 { 983 struct ethtool_rxnfc info; 984 size_t info_size = sizeof(info); 985 const struct ethtool_ops *ops = dev->ethtool_ops; 986 int ret; 987 void *rule_buf = NULL; 988 989 if (!ops->get_rxnfc) 990 return -EOPNOTSUPP; 991 992 /* struct ethtool_rxnfc was originally defined for 993 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 994 * members. User-space might still be using that 995 * definition. */ 996 if (cmd == ETHTOOL_GRXFH) 997 info_size = (offsetof(struct ethtool_rxnfc, data) + 998 sizeof(info.data)); 999 1000 if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size)) 1001 return -EFAULT; 1002 1003 /* If FLOW_RSS was requested then user-space must be using the 1004 * new definition, as FLOW_RSS is newer. 1005 */ 1006 if (cmd == ETHTOOL_GRXFH && info.flow_type & FLOW_RSS) { 1007 info_size = sizeof(info); 1008 if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size)) 1009 return -EFAULT; 1010 /* Since malicious users may modify the original data, 1011 * we need to check whether FLOW_RSS is still requested. 1012 */ 1013 if (!(info.flow_type & FLOW_RSS)) 1014 return -EINVAL; 1015 } 1016 1017 if (info.cmd != cmd) 1018 return -EINVAL; 1019 1020 if (info.cmd == ETHTOOL_GRXCLSRLALL) { 1021 if (info.rule_cnt > 0) { 1022 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) 1023 rule_buf = kcalloc(info.rule_cnt, sizeof(u32), 1024 GFP_USER); 1025 if (!rule_buf) 1026 return -ENOMEM; 1027 } 1028 } 1029 1030 ret = ops->get_rxnfc(dev, &info, rule_buf); 1031 if (ret < 0) 1032 goto err_out; 1033 1034 ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf); 1035 err_out: 1036 kfree(rule_buf); 1037 1038 return ret; 1039 } 1040 1041 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, 1042 struct ethtool_rxnfc *rx_rings, 1043 u32 size) 1044 { 1045 int i; 1046 1047 if (copy_from_user(indir, useraddr, array_size(size, sizeof(indir[0])))) 1048 return -EFAULT; 1049 1050 /* Validate ring indices */ 1051 for (i = 0; i < size; i++) 1052 if (indir[i] >= rx_rings->data) 1053 return -EINVAL; 1054 1055 return 0; 1056 } 1057 1058 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; 1059 1060 void netdev_rss_key_fill(void *buffer, size_t len) 1061 { 1062 BUG_ON(len > sizeof(netdev_rss_key)); 1063 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); 1064 memcpy(buffer, netdev_rss_key, len); 1065 } 1066 EXPORT_SYMBOL(netdev_rss_key_fill); 1067 1068 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, 1069 void __user *useraddr) 1070 { 1071 u32 user_size, dev_size; 1072 u32 *indir; 1073 int ret; 1074 1075 if (!dev->ethtool_ops->get_rxfh_indir_size || 1076 !dev->ethtool_ops->get_rxfh) 1077 return -EOPNOTSUPP; 1078 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev); 1079 if (dev_size == 0) 1080 return -EOPNOTSUPP; 1081 1082 if (copy_from_user(&user_size, 1083 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1084 sizeof(user_size))) 1085 return -EFAULT; 1086 1087 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), 1088 &dev_size, sizeof(dev_size))) 1089 return -EFAULT; 1090 1091 /* If the user buffer size is 0, this is just a query for the 1092 * device table size. Otherwise, if it's smaller than the 1093 * device table size it's an error. 1094 */ 1095 if (user_size < dev_size) 1096 return user_size == 0 ? 0 : -EINVAL; 1097 1098 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); 1099 if (!indir) 1100 return -ENOMEM; 1101 1102 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL); 1103 if (ret) 1104 goto out; 1105 1106 if (copy_to_user(useraddr + 1107 offsetof(struct ethtool_rxfh_indir, ring_index[0]), 1108 indir, dev_size * sizeof(indir[0]))) 1109 ret = -EFAULT; 1110 1111 out: 1112 kfree(indir); 1113 return ret; 1114 } 1115 1116 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, 1117 void __user *useraddr) 1118 { 1119 struct ethtool_rxnfc rx_rings; 1120 u32 user_size, dev_size, i; 1121 u32 *indir; 1122 const struct ethtool_ops *ops = dev->ethtool_ops; 1123 int ret; 1124 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); 1125 1126 if (!ops->get_rxfh_indir_size || !ops->set_rxfh || 1127 !ops->get_rxnfc) 1128 return -EOPNOTSUPP; 1129 1130 dev_size = ops->get_rxfh_indir_size(dev); 1131 if (dev_size == 0) 1132 return -EOPNOTSUPP; 1133 1134 if (copy_from_user(&user_size, 1135 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1136 sizeof(user_size))) 1137 return -EFAULT; 1138 1139 if (user_size != 0 && user_size != dev_size) 1140 return -EINVAL; 1141 1142 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); 1143 if (!indir) 1144 return -ENOMEM; 1145 1146 rx_rings.cmd = ETHTOOL_GRXRINGS; 1147 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1148 if (ret) 1149 goto out; 1150 1151 if (user_size == 0) { 1152 for (i = 0; i < dev_size; i++) 1153 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1154 } else { 1155 ret = ethtool_copy_validate_indir(indir, 1156 useraddr + ringidx_offset, 1157 &rx_rings, 1158 dev_size); 1159 if (ret) 1160 goto out; 1161 } 1162 1163 ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE); 1164 if (ret) 1165 goto out; 1166 1167 /* indicate whether rxfh was set to default */ 1168 if (user_size == 0) 1169 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1170 else 1171 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1172 1173 out: 1174 kfree(indir); 1175 return ret; 1176 } 1177 1178 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, 1179 void __user *useraddr) 1180 { 1181 int ret; 1182 const struct ethtool_ops *ops = dev->ethtool_ops; 1183 u32 user_indir_size, user_key_size; 1184 u32 dev_indir_size = 0, dev_key_size = 0; 1185 struct ethtool_rxfh rxfh; 1186 u32 total_size; 1187 u32 indir_bytes; 1188 u32 *indir = NULL; 1189 u8 dev_hfunc = 0; 1190 u8 *hkey = NULL; 1191 u8 *rss_config; 1192 1193 if (!ops->get_rxfh) 1194 return -EOPNOTSUPP; 1195 1196 if (ops->get_rxfh_indir_size) 1197 dev_indir_size = ops->get_rxfh_indir_size(dev); 1198 if (ops->get_rxfh_key_size) 1199 dev_key_size = ops->get_rxfh_key_size(dev); 1200 1201 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1202 return -EFAULT; 1203 user_indir_size = rxfh.indir_size; 1204 user_key_size = rxfh.key_size; 1205 1206 /* Check that reserved fields are 0 for now */ 1207 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32) 1208 return -EINVAL; 1209 /* Most drivers don't handle rss_context, check it's 0 as well */ 1210 if (rxfh.rss_context && !ops->get_rxfh_context) 1211 return -EOPNOTSUPP; 1212 1213 rxfh.indir_size = dev_indir_size; 1214 rxfh.key_size = dev_key_size; 1215 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) 1216 return -EFAULT; 1217 1218 if ((user_indir_size && (user_indir_size != dev_indir_size)) || 1219 (user_key_size && (user_key_size != dev_key_size))) 1220 return -EINVAL; 1221 1222 indir_bytes = user_indir_size * sizeof(indir[0]); 1223 total_size = indir_bytes + user_key_size; 1224 rss_config = kzalloc(total_size, GFP_USER); 1225 if (!rss_config) 1226 return -ENOMEM; 1227 1228 if (user_indir_size) 1229 indir = (u32 *)rss_config; 1230 1231 if (user_key_size) 1232 hkey = rss_config + indir_bytes; 1233 1234 if (rxfh.rss_context) 1235 ret = dev->ethtool_ops->get_rxfh_context(dev, indir, hkey, 1236 &dev_hfunc, 1237 rxfh.rss_context); 1238 else 1239 ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc); 1240 if (ret) 1241 goto out; 1242 1243 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), 1244 &dev_hfunc, sizeof(rxfh.hfunc))) { 1245 ret = -EFAULT; 1246 } else if (copy_to_user(useraddr + 1247 offsetof(struct ethtool_rxfh, rss_config[0]), 1248 rss_config, total_size)) { 1249 ret = -EFAULT; 1250 } 1251 out: 1252 kfree(rss_config); 1253 1254 return ret; 1255 } 1256 1257 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, 1258 void __user *useraddr) 1259 { 1260 int ret; 1261 const struct ethtool_ops *ops = dev->ethtool_ops; 1262 struct ethtool_rxnfc rx_rings; 1263 struct ethtool_rxfh rxfh; 1264 u32 dev_indir_size = 0, dev_key_size = 0, i; 1265 u32 *indir = NULL, indir_bytes = 0; 1266 u8 *hkey = NULL; 1267 u8 *rss_config; 1268 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); 1269 bool delete = false; 1270 1271 if (!ops->get_rxnfc || !ops->set_rxfh) 1272 return -EOPNOTSUPP; 1273 1274 if (ops->get_rxfh_indir_size) 1275 dev_indir_size = ops->get_rxfh_indir_size(dev); 1276 if (ops->get_rxfh_key_size) 1277 dev_key_size = ops->get_rxfh_key_size(dev); 1278 1279 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1280 return -EFAULT; 1281 1282 /* Check that reserved fields are 0 for now */ 1283 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32) 1284 return -EINVAL; 1285 /* Most drivers don't handle rss_context, check it's 0 as well */ 1286 if (rxfh.rss_context && !ops->set_rxfh_context) 1287 return -EOPNOTSUPP; 1288 1289 /* If either indir, hash key or function is valid, proceed further. 1290 * Must request at least one change: indir size, hash key or function. 1291 */ 1292 if ((rxfh.indir_size && 1293 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && 1294 rxfh.indir_size != dev_indir_size) || 1295 (rxfh.key_size && (rxfh.key_size != dev_key_size)) || 1296 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && 1297 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE)) 1298 return -EINVAL; 1299 1300 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1301 indir_bytes = dev_indir_size * sizeof(indir[0]); 1302 1303 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER); 1304 if (!rss_config) 1305 return -ENOMEM; 1306 1307 rx_rings.cmd = ETHTOOL_GRXRINGS; 1308 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1309 if (ret) 1310 goto out; 1311 1312 /* rxfh.indir_size == 0 means reset the indir table to default (master 1313 * context) or delete the context (other RSS contexts). 1314 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. 1315 */ 1316 if (rxfh.indir_size && 1317 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { 1318 indir = (u32 *)rss_config; 1319 ret = ethtool_copy_validate_indir(indir, 1320 useraddr + rss_cfg_offset, 1321 &rx_rings, 1322 rxfh.indir_size); 1323 if (ret) 1324 goto out; 1325 } else if (rxfh.indir_size == 0) { 1326 if (rxfh.rss_context == 0) { 1327 indir = (u32 *)rss_config; 1328 for (i = 0; i < dev_indir_size; i++) 1329 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1330 } else { 1331 delete = true; 1332 } 1333 } 1334 1335 if (rxfh.key_size) { 1336 hkey = rss_config + indir_bytes; 1337 if (copy_from_user(hkey, 1338 useraddr + rss_cfg_offset + indir_bytes, 1339 rxfh.key_size)) { 1340 ret = -EFAULT; 1341 goto out; 1342 } 1343 } 1344 1345 if (rxfh.rss_context) 1346 ret = ops->set_rxfh_context(dev, indir, hkey, rxfh.hfunc, 1347 &rxfh.rss_context, delete); 1348 else 1349 ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc); 1350 if (ret) 1351 goto out; 1352 1353 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), 1354 &rxfh.rss_context, sizeof(rxfh.rss_context))) 1355 ret = -EFAULT; 1356 1357 if (!rxfh.rss_context) { 1358 /* indicate whether rxfh was set to default */ 1359 if (rxfh.indir_size == 0) 1360 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1361 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1362 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1363 } 1364 1365 out: 1366 kfree(rss_config); 1367 return ret; 1368 } 1369 1370 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) 1371 { 1372 struct ethtool_regs regs; 1373 const struct ethtool_ops *ops = dev->ethtool_ops; 1374 void *regbuf; 1375 int reglen, ret; 1376 1377 if (!ops->get_regs || !ops->get_regs_len) 1378 return -EOPNOTSUPP; 1379 1380 if (copy_from_user(®s, useraddr, sizeof(regs))) 1381 return -EFAULT; 1382 1383 reglen = ops->get_regs_len(dev); 1384 if (reglen <= 0) 1385 return reglen; 1386 1387 if (regs.len > reglen) 1388 regs.len = reglen; 1389 1390 regbuf = vzalloc(reglen); 1391 if (!regbuf) 1392 return -ENOMEM; 1393 1394 if (regs.len < reglen) 1395 reglen = regs.len; 1396 1397 ops->get_regs(dev, ®s, regbuf); 1398 1399 ret = -EFAULT; 1400 if (copy_to_user(useraddr, ®s, sizeof(regs))) 1401 goto out; 1402 useraddr += offsetof(struct ethtool_regs, data); 1403 if (copy_to_user(useraddr, regbuf, reglen)) 1404 goto out; 1405 ret = 0; 1406 1407 out: 1408 vfree(regbuf); 1409 return ret; 1410 } 1411 1412 static int ethtool_reset(struct net_device *dev, char __user *useraddr) 1413 { 1414 struct ethtool_value reset; 1415 int ret; 1416 1417 if (!dev->ethtool_ops->reset) 1418 return -EOPNOTSUPP; 1419 1420 if (copy_from_user(&reset, useraddr, sizeof(reset))) 1421 return -EFAULT; 1422 1423 ret = dev->ethtool_ops->reset(dev, &reset.data); 1424 if (ret) 1425 return ret; 1426 1427 if (copy_to_user(useraddr, &reset, sizeof(reset))) 1428 return -EFAULT; 1429 return 0; 1430 } 1431 1432 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) 1433 { 1434 struct ethtool_wolinfo wol; 1435 1436 if (!dev->ethtool_ops->get_wol) 1437 return -EOPNOTSUPP; 1438 1439 memset(&wol, 0, sizeof(struct ethtool_wolinfo)); 1440 wol.cmd = ETHTOOL_GWOL; 1441 dev->ethtool_ops->get_wol(dev, &wol); 1442 1443 if (copy_to_user(useraddr, &wol, sizeof(wol))) 1444 return -EFAULT; 1445 return 0; 1446 } 1447 1448 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) 1449 { 1450 struct ethtool_wolinfo wol; 1451 int ret; 1452 1453 if (!dev->ethtool_ops->set_wol) 1454 return -EOPNOTSUPP; 1455 1456 if (copy_from_user(&wol, useraddr, sizeof(wol))) 1457 return -EFAULT; 1458 1459 ret = dev->ethtool_ops->set_wol(dev, &wol); 1460 if (ret) 1461 return ret; 1462 1463 dev->wol_enabled = !!wol.wolopts; 1464 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL); 1465 1466 return 0; 1467 } 1468 1469 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) 1470 { 1471 struct ethtool_eee edata; 1472 int rc; 1473 1474 if (!dev->ethtool_ops->get_eee) 1475 return -EOPNOTSUPP; 1476 1477 memset(&edata, 0, sizeof(struct ethtool_eee)); 1478 edata.cmd = ETHTOOL_GEEE; 1479 rc = dev->ethtool_ops->get_eee(dev, &edata); 1480 1481 if (rc) 1482 return rc; 1483 1484 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1485 return -EFAULT; 1486 1487 return 0; 1488 } 1489 1490 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) 1491 { 1492 struct ethtool_eee edata; 1493 int ret; 1494 1495 if (!dev->ethtool_ops->set_eee) 1496 return -EOPNOTSUPP; 1497 1498 if (copy_from_user(&edata, useraddr, sizeof(edata))) 1499 return -EFAULT; 1500 1501 ret = dev->ethtool_ops->set_eee(dev, &edata); 1502 if (!ret) 1503 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL); 1504 return ret; 1505 } 1506 1507 static int ethtool_nway_reset(struct net_device *dev) 1508 { 1509 if (!dev->ethtool_ops->nway_reset) 1510 return -EOPNOTSUPP; 1511 1512 return dev->ethtool_ops->nway_reset(dev); 1513 } 1514 1515 static int ethtool_get_link(struct net_device *dev, char __user *useraddr) 1516 { 1517 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; 1518 int link = __ethtool_get_link(dev); 1519 1520 if (link < 0) 1521 return link; 1522 1523 edata.data = link; 1524 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1525 return -EFAULT; 1526 return 0; 1527 } 1528 1529 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, 1530 int (*getter)(struct net_device *, 1531 struct ethtool_eeprom *, u8 *), 1532 u32 total_len) 1533 { 1534 struct ethtool_eeprom eeprom; 1535 void __user *userbuf = useraddr + sizeof(eeprom); 1536 u32 bytes_remaining; 1537 u8 *data; 1538 int ret = 0; 1539 1540 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1541 return -EFAULT; 1542 1543 /* Check for wrap and zero */ 1544 if (eeprom.offset + eeprom.len <= eeprom.offset) 1545 return -EINVAL; 1546 1547 /* Check for exceeding total eeprom len */ 1548 if (eeprom.offset + eeprom.len > total_len) 1549 return -EINVAL; 1550 1551 data = kzalloc(PAGE_SIZE, GFP_USER); 1552 if (!data) 1553 return -ENOMEM; 1554 1555 bytes_remaining = eeprom.len; 1556 while (bytes_remaining > 0) { 1557 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1558 1559 ret = getter(dev, &eeprom, data); 1560 if (ret) 1561 break; 1562 if (!eeprom.len) { 1563 ret = -EIO; 1564 break; 1565 } 1566 if (copy_to_user(userbuf, data, eeprom.len)) { 1567 ret = -EFAULT; 1568 break; 1569 } 1570 userbuf += eeprom.len; 1571 eeprom.offset += eeprom.len; 1572 bytes_remaining -= eeprom.len; 1573 } 1574 1575 eeprom.len = userbuf - (useraddr + sizeof(eeprom)); 1576 eeprom.offset -= eeprom.len; 1577 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) 1578 ret = -EFAULT; 1579 1580 kfree(data); 1581 return ret; 1582 } 1583 1584 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) 1585 { 1586 const struct ethtool_ops *ops = dev->ethtool_ops; 1587 1588 if (!ops->get_eeprom || !ops->get_eeprom_len || 1589 !ops->get_eeprom_len(dev)) 1590 return -EOPNOTSUPP; 1591 1592 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, 1593 ops->get_eeprom_len(dev)); 1594 } 1595 1596 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) 1597 { 1598 struct ethtool_eeprom eeprom; 1599 const struct ethtool_ops *ops = dev->ethtool_ops; 1600 void __user *userbuf = useraddr + sizeof(eeprom); 1601 u32 bytes_remaining; 1602 u8 *data; 1603 int ret = 0; 1604 1605 if (!ops->set_eeprom || !ops->get_eeprom_len || 1606 !ops->get_eeprom_len(dev)) 1607 return -EOPNOTSUPP; 1608 1609 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1610 return -EFAULT; 1611 1612 /* Check for wrap and zero */ 1613 if (eeprom.offset + eeprom.len <= eeprom.offset) 1614 return -EINVAL; 1615 1616 /* Check for exceeding total eeprom len */ 1617 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) 1618 return -EINVAL; 1619 1620 data = kzalloc(PAGE_SIZE, GFP_USER); 1621 if (!data) 1622 return -ENOMEM; 1623 1624 bytes_remaining = eeprom.len; 1625 while (bytes_remaining > 0) { 1626 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1627 1628 if (copy_from_user(data, userbuf, eeprom.len)) { 1629 ret = -EFAULT; 1630 break; 1631 } 1632 ret = ops->set_eeprom(dev, &eeprom, data); 1633 if (ret) 1634 break; 1635 userbuf += eeprom.len; 1636 eeprom.offset += eeprom.len; 1637 bytes_remaining -= eeprom.len; 1638 } 1639 1640 kfree(data); 1641 return ret; 1642 } 1643 1644 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, 1645 void __user *useraddr) 1646 { 1647 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 1648 struct kernel_ethtool_coalesce kernel_coalesce = {}; 1649 int ret; 1650 1651 if (!dev->ethtool_ops->get_coalesce) 1652 return -EOPNOTSUPP; 1653 1654 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 1655 NULL); 1656 if (ret) 1657 return ret; 1658 1659 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 1660 return -EFAULT; 1661 return 0; 1662 } 1663 1664 static bool 1665 ethtool_set_coalesce_supported(struct net_device *dev, 1666 struct ethtool_coalesce *coalesce) 1667 { 1668 u32 supported_params = dev->ethtool_ops->supported_coalesce_params; 1669 u32 nonzero_params = 0; 1670 1671 if (coalesce->rx_coalesce_usecs) 1672 nonzero_params |= ETHTOOL_COALESCE_RX_USECS; 1673 if (coalesce->rx_max_coalesced_frames) 1674 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; 1675 if (coalesce->rx_coalesce_usecs_irq) 1676 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; 1677 if (coalesce->rx_max_coalesced_frames_irq) 1678 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; 1679 if (coalesce->tx_coalesce_usecs) 1680 nonzero_params |= ETHTOOL_COALESCE_TX_USECS; 1681 if (coalesce->tx_max_coalesced_frames) 1682 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; 1683 if (coalesce->tx_coalesce_usecs_irq) 1684 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; 1685 if (coalesce->tx_max_coalesced_frames_irq) 1686 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; 1687 if (coalesce->stats_block_coalesce_usecs) 1688 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; 1689 if (coalesce->use_adaptive_rx_coalesce) 1690 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; 1691 if (coalesce->use_adaptive_tx_coalesce) 1692 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; 1693 if (coalesce->pkt_rate_low) 1694 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; 1695 if (coalesce->rx_coalesce_usecs_low) 1696 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; 1697 if (coalesce->rx_max_coalesced_frames_low) 1698 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; 1699 if (coalesce->tx_coalesce_usecs_low) 1700 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; 1701 if (coalesce->tx_max_coalesced_frames_low) 1702 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; 1703 if (coalesce->pkt_rate_high) 1704 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; 1705 if (coalesce->rx_coalesce_usecs_high) 1706 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; 1707 if (coalesce->rx_max_coalesced_frames_high) 1708 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; 1709 if (coalesce->tx_coalesce_usecs_high) 1710 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; 1711 if (coalesce->tx_max_coalesced_frames_high) 1712 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; 1713 if (coalesce->rate_sample_interval) 1714 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; 1715 1716 return (supported_params & nonzero_params) == nonzero_params; 1717 } 1718 1719 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, 1720 void __user *useraddr) 1721 { 1722 struct kernel_ethtool_coalesce kernel_coalesce = {}; 1723 struct ethtool_coalesce coalesce; 1724 int ret; 1725 1726 if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce) 1727 return -EOPNOTSUPP; 1728 1729 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 1730 NULL); 1731 if (ret) 1732 return ret; 1733 1734 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) 1735 return -EFAULT; 1736 1737 if (!ethtool_set_coalesce_supported(dev, &coalesce)) 1738 return -EOPNOTSUPP; 1739 1740 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, 1741 NULL); 1742 if (!ret) 1743 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL); 1744 return ret; 1745 } 1746 1747 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) 1748 { 1749 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; 1750 struct kernel_ethtool_ringparam kernel_ringparam = {}; 1751 1752 if (!dev->ethtool_ops->get_ringparam) 1753 return -EOPNOTSUPP; 1754 1755 dev->ethtool_ops->get_ringparam(dev, &ringparam, 1756 &kernel_ringparam, NULL); 1757 1758 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) 1759 return -EFAULT; 1760 return 0; 1761 } 1762 1763 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) 1764 { 1765 struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM }; 1766 struct kernel_ethtool_ringparam kernel_ringparam; 1767 int ret; 1768 1769 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) 1770 return -EOPNOTSUPP; 1771 1772 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) 1773 return -EFAULT; 1774 1775 dev->ethtool_ops->get_ringparam(dev, &max, &kernel_ringparam, NULL); 1776 1777 /* ensure new ring parameters are within the maximums */ 1778 if (ringparam.rx_pending > max.rx_max_pending || 1779 ringparam.rx_mini_pending > max.rx_mini_max_pending || 1780 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || 1781 ringparam.tx_pending > max.tx_max_pending) 1782 return -EINVAL; 1783 1784 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, 1785 &kernel_ringparam, NULL); 1786 if (!ret) 1787 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL); 1788 return ret; 1789 } 1790 1791 static noinline_for_stack int ethtool_get_channels(struct net_device *dev, 1792 void __user *useraddr) 1793 { 1794 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; 1795 1796 if (!dev->ethtool_ops->get_channels) 1797 return -EOPNOTSUPP; 1798 1799 dev->ethtool_ops->get_channels(dev, &channels); 1800 1801 if (copy_to_user(useraddr, &channels, sizeof(channels))) 1802 return -EFAULT; 1803 return 0; 1804 } 1805 1806 static noinline_for_stack int ethtool_set_channels(struct net_device *dev, 1807 void __user *useraddr) 1808 { 1809 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; 1810 u16 from_channel, to_channel; 1811 u32 max_rx_in_use = 0; 1812 unsigned int i; 1813 int ret; 1814 1815 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) 1816 return -EOPNOTSUPP; 1817 1818 if (copy_from_user(&channels, useraddr, sizeof(channels))) 1819 return -EFAULT; 1820 1821 dev->ethtool_ops->get_channels(dev, &curr); 1822 1823 if (channels.rx_count == curr.rx_count && 1824 channels.tx_count == curr.tx_count && 1825 channels.combined_count == curr.combined_count && 1826 channels.other_count == curr.other_count) 1827 return 0; 1828 1829 /* ensure new counts are within the maximums */ 1830 if (channels.rx_count > curr.max_rx || 1831 channels.tx_count > curr.max_tx || 1832 channels.combined_count > curr.max_combined || 1833 channels.other_count > curr.max_other) 1834 return -EINVAL; 1835 1836 /* ensure there is at least one RX and one TX channel */ 1837 if (!channels.combined_count && 1838 (!channels.rx_count || !channels.tx_count)) 1839 return -EINVAL; 1840 1841 /* ensure the new Rx count fits within the configured Rx flow 1842 * indirection table settings */ 1843 if (netif_is_rxfh_configured(dev) && 1844 !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) && 1845 (channels.combined_count + channels.rx_count) <= max_rx_in_use) 1846 return -EINVAL; 1847 1848 /* Disabling channels, query zero-copy AF_XDP sockets */ 1849 from_channel = channels.combined_count + 1850 min(channels.rx_count, channels.tx_count); 1851 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); 1852 for (i = from_channel; i < to_channel; i++) 1853 if (xsk_get_pool_from_qid(dev, i)) 1854 return -EINVAL; 1855 1856 ret = dev->ethtool_ops->set_channels(dev, &channels); 1857 if (!ret) 1858 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL); 1859 return ret; 1860 } 1861 1862 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) 1863 { 1864 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; 1865 1866 if (!dev->ethtool_ops->get_pauseparam) 1867 return -EOPNOTSUPP; 1868 1869 dev->ethtool_ops->get_pauseparam(dev, &pauseparam); 1870 1871 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) 1872 return -EFAULT; 1873 return 0; 1874 } 1875 1876 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) 1877 { 1878 struct ethtool_pauseparam pauseparam; 1879 int ret; 1880 1881 if (!dev->ethtool_ops->set_pauseparam) 1882 return -EOPNOTSUPP; 1883 1884 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) 1885 return -EFAULT; 1886 1887 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); 1888 if (!ret) 1889 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL); 1890 return ret; 1891 } 1892 1893 static int ethtool_self_test(struct net_device *dev, char __user *useraddr) 1894 { 1895 struct ethtool_test test; 1896 const struct ethtool_ops *ops = dev->ethtool_ops; 1897 u64 *data; 1898 int ret, test_len; 1899 1900 if (!ops->self_test || !ops->get_sset_count) 1901 return -EOPNOTSUPP; 1902 1903 test_len = ops->get_sset_count(dev, ETH_SS_TEST); 1904 if (test_len < 0) 1905 return test_len; 1906 WARN_ON(test_len == 0); 1907 1908 if (copy_from_user(&test, useraddr, sizeof(test))) 1909 return -EFAULT; 1910 1911 test.len = test_len; 1912 data = kcalloc(test_len, sizeof(u64), GFP_USER); 1913 if (!data) 1914 return -ENOMEM; 1915 1916 netif_testing_on(dev); 1917 ops->self_test(dev, &test, data); 1918 netif_testing_off(dev); 1919 1920 ret = -EFAULT; 1921 if (copy_to_user(useraddr, &test, sizeof(test))) 1922 goto out; 1923 useraddr += sizeof(test); 1924 if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) 1925 goto out; 1926 ret = 0; 1927 1928 out: 1929 kfree(data); 1930 return ret; 1931 } 1932 1933 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) 1934 { 1935 struct ethtool_gstrings gstrings; 1936 u8 *data; 1937 int ret; 1938 1939 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) 1940 return -EFAULT; 1941 1942 ret = __ethtool_get_sset_count(dev, gstrings.string_set); 1943 if (ret < 0) 1944 return ret; 1945 if (ret > S32_MAX / ETH_GSTRING_LEN) 1946 return -ENOMEM; 1947 WARN_ON_ONCE(!ret); 1948 1949 gstrings.len = ret; 1950 1951 if (gstrings.len) { 1952 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); 1953 if (!data) 1954 return -ENOMEM; 1955 1956 __ethtool_get_strings(dev, gstrings.string_set, data); 1957 } else { 1958 data = NULL; 1959 } 1960 1961 ret = -EFAULT; 1962 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) 1963 goto out; 1964 useraddr += sizeof(gstrings); 1965 if (gstrings.len && 1966 copy_to_user(useraddr, data, 1967 array_size(gstrings.len, ETH_GSTRING_LEN))) 1968 goto out; 1969 ret = 0; 1970 1971 out: 1972 vfree(data); 1973 return ret; 1974 } 1975 1976 __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) 1977 { 1978 va_list args; 1979 1980 va_start(args, fmt); 1981 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); 1982 va_end(args); 1983 1984 *data += ETH_GSTRING_LEN; 1985 } 1986 EXPORT_SYMBOL(ethtool_sprintf); 1987 1988 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) 1989 { 1990 struct ethtool_value id; 1991 static bool busy; 1992 const struct ethtool_ops *ops = dev->ethtool_ops; 1993 netdevice_tracker dev_tracker; 1994 int rc; 1995 1996 if (!ops->set_phys_id) 1997 return -EOPNOTSUPP; 1998 1999 if (busy) 2000 return -EBUSY; 2001 2002 if (copy_from_user(&id, useraddr, sizeof(id))) 2003 return -EFAULT; 2004 2005 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); 2006 if (rc < 0) 2007 return rc; 2008 2009 /* Drop the RTNL lock while waiting, but prevent reentry or 2010 * removal of the device. 2011 */ 2012 busy = true; 2013 dev_hold_track(dev, &dev_tracker, GFP_KERNEL); 2014 rtnl_unlock(); 2015 2016 if (rc == 0) { 2017 /* Driver will handle this itself */ 2018 schedule_timeout_interruptible( 2019 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); 2020 } else { 2021 /* Driver expects to be called at twice the frequency in rc */ 2022 int n = rc * 2, interval = HZ / n; 2023 u64 count = n * id.data, i = 0; 2024 2025 do { 2026 rtnl_lock(); 2027 rc = ops->set_phys_id(dev, 2028 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); 2029 rtnl_unlock(); 2030 if (rc) 2031 break; 2032 schedule_timeout_interruptible(interval); 2033 } while (!signal_pending(current) && (!id.data || i < count)); 2034 } 2035 2036 rtnl_lock(); 2037 dev_put_track(dev, &dev_tracker); 2038 busy = false; 2039 2040 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); 2041 return rc; 2042 } 2043 2044 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) 2045 { 2046 struct ethtool_stats stats; 2047 const struct ethtool_ops *ops = dev->ethtool_ops; 2048 u64 *data; 2049 int ret, n_stats; 2050 2051 if (!ops->get_ethtool_stats || !ops->get_sset_count) 2052 return -EOPNOTSUPP; 2053 2054 n_stats = ops->get_sset_count(dev, ETH_SS_STATS); 2055 if (n_stats < 0) 2056 return n_stats; 2057 if (n_stats > S32_MAX / sizeof(u64)) 2058 return -ENOMEM; 2059 WARN_ON_ONCE(!n_stats); 2060 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2061 return -EFAULT; 2062 2063 stats.n_stats = n_stats; 2064 2065 if (n_stats) { 2066 data = vzalloc(array_size(n_stats, sizeof(u64))); 2067 if (!data) 2068 return -ENOMEM; 2069 ops->get_ethtool_stats(dev, &stats, data); 2070 } else { 2071 data = NULL; 2072 } 2073 2074 ret = -EFAULT; 2075 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2076 goto out; 2077 useraddr += sizeof(stats); 2078 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) 2079 goto out; 2080 ret = 0; 2081 2082 out: 2083 vfree(data); 2084 return ret; 2085 } 2086 2087 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) 2088 { 2089 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 2090 const struct ethtool_ops *ops = dev->ethtool_ops; 2091 struct phy_device *phydev = dev->phydev; 2092 struct ethtool_stats stats; 2093 u64 *data; 2094 int ret, n_stats; 2095 2096 if (!phydev && (!ops->get_ethtool_phy_stats || !ops->get_sset_count)) 2097 return -EOPNOTSUPP; 2098 2099 if (phydev && !ops->get_ethtool_phy_stats && 2100 phy_ops && phy_ops->get_sset_count) 2101 n_stats = phy_ops->get_sset_count(phydev); 2102 else 2103 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); 2104 if (n_stats < 0) 2105 return n_stats; 2106 if (n_stats > S32_MAX / sizeof(u64)) 2107 return -ENOMEM; 2108 WARN_ON_ONCE(!n_stats); 2109 2110 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2111 return -EFAULT; 2112 2113 stats.n_stats = n_stats; 2114 2115 if (n_stats) { 2116 data = vzalloc(array_size(n_stats, sizeof(u64))); 2117 if (!data) 2118 return -ENOMEM; 2119 2120 if (phydev && !ops->get_ethtool_phy_stats && 2121 phy_ops && phy_ops->get_stats) { 2122 ret = phy_ops->get_stats(phydev, &stats, data); 2123 if (ret < 0) 2124 goto out; 2125 } else { 2126 ops->get_ethtool_phy_stats(dev, &stats, data); 2127 } 2128 } else { 2129 data = NULL; 2130 } 2131 2132 ret = -EFAULT; 2133 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2134 goto out; 2135 useraddr += sizeof(stats); 2136 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) 2137 goto out; 2138 ret = 0; 2139 2140 out: 2141 vfree(data); 2142 return ret; 2143 } 2144 2145 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) 2146 { 2147 struct ethtool_perm_addr epaddr; 2148 2149 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) 2150 return -EFAULT; 2151 2152 if (epaddr.size < dev->addr_len) 2153 return -ETOOSMALL; 2154 epaddr.size = dev->addr_len; 2155 2156 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) 2157 return -EFAULT; 2158 useraddr += sizeof(epaddr); 2159 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) 2160 return -EFAULT; 2161 return 0; 2162 } 2163 2164 static int ethtool_get_value(struct net_device *dev, char __user *useraddr, 2165 u32 cmd, u32 (*actor)(struct net_device *)) 2166 { 2167 struct ethtool_value edata = { .cmd = cmd }; 2168 2169 if (!actor) 2170 return -EOPNOTSUPP; 2171 2172 edata.data = actor(dev); 2173 2174 if (copy_to_user(useraddr, &edata, sizeof(edata))) 2175 return -EFAULT; 2176 return 0; 2177 } 2178 2179 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, 2180 void (*actor)(struct net_device *, u32)) 2181 { 2182 struct ethtool_value edata; 2183 2184 if (!actor) 2185 return -EOPNOTSUPP; 2186 2187 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2188 return -EFAULT; 2189 2190 actor(dev, edata.data); 2191 return 0; 2192 } 2193 2194 static int ethtool_set_value(struct net_device *dev, char __user *useraddr, 2195 int (*actor)(struct net_device *, u32)) 2196 { 2197 struct ethtool_value edata; 2198 2199 if (!actor) 2200 return -EOPNOTSUPP; 2201 2202 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2203 return -EFAULT; 2204 2205 return actor(dev, edata.data); 2206 } 2207 2208 static int 2209 ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) 2210 { 2211 if (!dev->ethtool_ops->flash_device) { 2212 req->devlink = netdev_to_devlink_get(dev); 2213 return 0; 2214 } 2215 2216 return dev->ethtool_ops->flash_device(dev, &req->efl); 2217 } 2218 2219 static int ethtool_set_dump(struct net_device *dev, 2220 void __user *useraddr) 2221 { 2222 struct ethtool_dump dump; 2223 2224 if (!dev->ethtool_ops->set_dump) 2225 return -EOPNOTSUPP; 2226 2227 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2228 return -EFAULT; 2229 2230 return dev->ethtool_ops->set_dump(dev, &dump); 2231 } 2232 2233 static int ethtool_get_dump_flag(struct net_device *dev, 2234 void __user *useraddr) 2235 { 2236 int ret; 2237 struct ethtool_dump dump; 2238 const struct ethtool_ops *ops = dev->ethtool_ops; 2239 2240 if (!ops->get_dump_flag) 2241 return -EOPNOTSUPP; 2242 2243 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2244 return -EFAULT; 2245 2246 ret = ops->get_dump_flag(dev, &dump); 2247 if (ret) 2248 return ret; 2249 2250 if (copy_to_user(useraddr, &dump, sizeof(dump))) 2251 return -EFAULT; 2252 return 0; 2253 } 2254 2255 static int ethtool_get_dump_data(struct net_device *dev, 2256 void __user *useraddr) 2257 { 2258 int ret; 2259 __u32 len; 2260 struct ethtool_dump dump, tmp; 2261 const struct ethtool_ops *ops = dev->ethtool_ops; 2262 void *data = NULL; 2263 2264 if (!ops->get_dump_data || !ops->get_dump_flag) 2265 return -EOPNOTSUPP; 2266 2267 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2268 return -EFAULT; 2269 2270 memset(&tmp, 0, sizeof(tmp)); 2271 tmp.cmd = ETHTOOL_GET_DUMP_FLAG; 2272 ret = ops->get_dump_flag(dev, &tmp); 2273 if (ret) 2274 return ret; 2275 2276 len = min(tmp.len, dump.len); 2277 if (!len) 2278 return -EFAULT; 2279 2280 /* Don't ever let the driver think there's more space available 2281 * than it requested with .get_dump_flag(). 2282 */ 2283 dump.len = len; 2284 2285 /* Always allocate enough space to hold the whole thing so that the 2286 * driver does not need to check the length and bother with partial 2287 * dumping. 2288 */ 2289 data = vzalloc(tmp.len); 2290 if (!data) 2291 return -ENOMEM; 2292 ret = ops->get_dump_data(dev, &dump, data); 2293 if (ret) 2294 goto out; 2295 2296 /* There are two sane possibilities: 2297 * 1. The driver's .get_dump_data() does not touch dump.len. 2298 * 2. Or it may set dump.len to how much it really writes, which 2299 * should be tmp.len (or len if it can do a partial dump). 2300 * In any case respond to userspace with the actual length of data 2301 * it's receiving. 2302 */ 2303 WARN_ON(dump.len != len && dump.len != tmp.len); 2304 dump.len = len; 2305 2306 if (copy_to_user(useraddr, &dump, sizeof(dump))) { 2307 ret = -EFAULT; 2308 goto out; 2309 } 2310 useraddr += offsetof(struct ethtool_dump, data); 2311 if (copy_to_user(useraddr, data, len)) 2312 ret = -EFAULT; 2313 out: 2314 vfree(data); 2315 return ret; 2316 } 2317 2318 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) 2319 { 2320 struct ethtool_ts_info info; 2321 int err; 2322 2323 err = __ethtool_get_ts_info(dev, &info); 2324 if (err) 2325 return err; 2326 2327 if (copy_to_user(useraddr, &info, sizeof(info))) 2328 return -EFAULT; 2329 2330 return 0; 2331 } 2332 2333 int ethtool_get_module_info_call(struct net_device *dev, 2334 struct ethtool_modinfo *modinfo) 2335 { 2336 const struct ethtool_ops *ops = dev->ethtool_ops; 2337 struct phy_device *phydev = dev->phydev; 2338 2339 if (dev->sfp_bus) 2340 return sfp_get_module_info(dev->sfp_bus, modinfo); 2341 2342 if (phydev && phydev->drv && phydev->drv->module_info) 2343 return phydev->drv->module_info(phydev, modinfo); 2344 2345 if (ops->get_module_info) 2346 return ops->get_module_info(dev, modinfo); 2347 2348 return -EOPNOTSUPP; 2349 } 2350 2351 static int ethtool_get_module_info(struct net_device *dev, 2352 void __user *useraddr) 2353 { 2354 int ret; 2355 struct ethtool_modinfo modinfo; 2356 2357 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) 2358 return -EFAULT; 2359 2360 ret = ethtool_get_module_info_call(dev, &modinfo); 2361 if (ret) 2362 return ret; 2363 2364 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) 2365 return -EFAULT; 2366 2367 return 0; 2368 } 2369 2370 int ethtool_get_module_eeprom_call(struct net_device *dev, 2371 struct ethtool_eeprom *ee, u8 *data) 2372 { 2373 const struct ethtool_ops *ops = dev->ethtool_ops; 2374 struct phy_device *phydev = dev->phydev; 2375 2376 if (dev->sfp_bus) 2377 return sfp_get_module_eeprom(dev->sfp_bus, ee, data); 2378 2379 if (phydev && phydev->drv && phydev->drv->module_eeprom) 2380 return phydev->drv->module_eeprom(phydev, ee, data); 2381 2382 if (ops->get_module_eeprom) 2383 return ops->get_module_eeprom(dev, ee, data); 2384 2385 return -EOPNOTSUPP; 2386 } 2387 2388 static int ethtool_get_module_eeprom(struct net_device *dev, 2389 void __user *useraddr) 2390 { 2391 int ret; 2392 struct ethtool_modinfo modinfo; 2393 2394 ret = ethtool_get_module_info_call(dev, &modinfo); 2395 if (ret) 2396 return ret; 2397 2398 return ethtool_get_any_eeprom(dev, useraddr, 2399 ethtool_get_module_eeprom_call, 2400 modinfo.eeprom_len); 2401 } 2402 2403 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) 2404 { 2405 switch (tuna->id) { 2406 case ETHTOOL_RX_COPYBREAK: 2407 case ETHTOOL_TX_COPYBREAK: 2408 case ETHTOOL_TX_COPYBREAK_BUF_SIZE: 2409 if (tuna->len != sizeof(u32) || 2410 tuna->type_id != ETHTOOL_TUNABLE_U32) 2411 return -EINVAL; 2412 break; 2413 case ETHTOOL_PFC_PREVENTION_TOUT: 2414 if (tuna->len != sizeof(u16) || 2415 tuna->type_id != ETHTOOL_TUNABLE_U16) 2416 return -EINVAL; 2417 break; 2418 default: 2419 return -EINVAL; 2420 } 2421 2422 return 0; 2423 } 2424 2425 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) 2426 { 2427 int ret; 2428 struct ethtool_tunable tuna; 2429 const struct ethtool_ops *ops = dev->ethtool_ops; 2430 void *data; 2431 2432 if (!ops->get_tunable) 2433 return -EOPNOTSUPP; 2434 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2435 return -EFAULT; 2436 ret = ethtool_tunable_valid(&tuna); 2437 if (ret) 2438 return ret; 2439 data = kzalloc(tuna.len, GFP_USER); 2440 if (!data) 2441 return -ENOMEM; 2442 ret = ops->get_tunable(dev, &tuna, data); 2443 if (ret) 2444 goto out; 2445 useraddr += sizeof(tuna); 2446 ret = -EFAULT; 2447 if (copy_to_user(useraddr, data, tuna.len)) 2448 goto out; 2449 ret = 0; 2450 2451 out: 2452 kfree(data); 2453 return ret; 2454 } 2455 2456 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) 2457 { 2458 int ret; 2459 struct ethtool_tunable tuna; 2460 const struct ethtool_ops *ops = dev->ethtool_ops; 2461 void *data; 2462 2463 if (!ops->set_tunable) 2464 return -EOPNOTSUPP; 2465 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2466 return -EFAULT; 2467 ret = ethtool_tunable_valid(&tuna); 2468 if (ret) 2469 return ret; 2470 useraddr += sizeof(tuna); 2471 data = memdup_user(useraddr, tuna.len); 2472 if (IS_ERR(data)) 2473 return PTR_ERR(data); 2474 ret = ops->set_tunable(dev, &tuna, data); 2475 2476 kfree(data); 2477 return ret; 2478 } 2479 2480 static noinline_for_stack int 2481 ethtool_get_per_queue_coalesce(struct net_device *dev, 2482 void __user *useraddr, 2483 struct ethtool_per_queue_op *per_queue_opt) 2484 { 2485 u32 bit; 2486 int ret; 2487 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2488 2489 if (!dev->ethtool_ops->get_per_queue_coalesce) 2490 return -EOPNOTSUPP; 2491 2492 useraddr += sizeof(*per_queue_opt); 2493 2494 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, 2495 MAX_NUM_QUEUE); 2496 2497 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2498 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2499 2500 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); 2501 if (ret != 0) 2502 return ret; 2503 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2504 return -EFAULT; 2505 useraddr += sizeof(coalesce); 2506 } 2507 2508 return 0; 2509 } 2510 2511 static noinline_for_stack int 2512 ethtool_set_per_queue_coalesce(struct net_device *dev, 2513 void __user *useraddr, 2514 struct ethtool_per_queue_op *per_queue_opt) 2515 { 2516 u32 bit; 2517 int i, ret = 0; 2518 int n_queue; 2519 struct ethtool_coalesce *backup = NULL, *tmp = NULL; 2520 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2521 2522 if ((!dev->ethtool_ops->set_per_queue_coalesce) || 2523 (!dev->ethtool_ops->get_per_queue_coalesce)) 2524 return -EOPNOTSUPP; 2525 2526 useraddr += sizeof(*per_queue_opt); 2527 2528 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); 2529 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); 2530 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); 2531 if (!backup) 2532 return -ENOMEM; 2533 2534 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2535 struct ethtool_coalesce coalesce; 2536 2537 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); 2538 if (ret != 0) 2539 goto roll_back; 2540 2541 tmp++; 2542 2543 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { 2544 ret = -EFAULT; 2545 goto roll_back; 2546 } 2547 2548 if (!ethtool_set_coalesce_supported(dev, &coalesce)) { 2549 ret = -EOPNOTSUPP; 2550 goto roll_back; 2551 } 2552 2553 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); 2554 if (ret != 0) 2555 goto roll_back; 2556 2557 useraddr += sizeof(coalesce); 2558 } 2559 2560 roll_back: 2561 if (ret != 0) { 2562 tmp = backup; 2563 for_each_set_bit(i, queue_mask, bit) { 2564 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); 2565 tmp++; 2566 } 2567 } 2568 kfree(backup); 2569 2570 return ret; 2571 } 2572 2573 static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, 2574 void __user *useraddr, u32 sub_cmd) 2575 { 2576 struct ethtool_per_queue_op per_queue_opt; 2577 2578 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) 2579 return -EFAULT; 2580 2581 if (per_queue_opt.sub_command != sub_cmd) 2582 return -EINVAL; 2583 2584 switch (per_queue_opt.sub_command) { 2585 case ETHTOOL_GCOALESCE: 2586 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2587 case ETHTOOL_SCOALESCE: 2588 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2589 default: 2590 return -EOPNOTSUPP; 2591 } 2592 } 2593 2594 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) 2595 { 2596 switch (tuna->id) { 2597 case ETHTOOL_PHY_DOWNSHIFT: 2598 case ETHTOOL_PHY_FAST_LINK_DOWN: 2599 if (tuna->len != sizeof(u8) || 2600 tuna->type_id != ETHTOOL_TUNABLE_U8) 2601 return -EINVAL; 2602 break; 2603 case ETHTOOL_PHY_EDPD: 2604 if (tuna->len != sizeof(u16) || 2605 tuna->type_id != ETHTOOL_TUNABLE_U16) 2606 return -EINVAL; 2607 break; 2608 default: 2609 return -EINVAL; 2610 } 2611 2612 return 0; 2613 } 2614 2615 static int get_phy_tunable(struct net_device *dev, void __user *useraddr) 2616 { 2617 struct phy_device *phydev = dev->phydev; 2618 struct ethtool_tunable tuna; 2619 bool phy_drv_tunable; 2620 void *data; 2621 int ret; 2622 2623 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 2624 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) 2625 return -EOPNOTSUPP; 2626 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2627 return -EFAULT; 2628 ret = ethtool_phy_tunable_valid(&tuna); 2629 if (ret) 2630 return ret; 2631 data = kzalloc(tuna.len, GFP_USER); 2632 if (!data) 2633 return -ENOMEM; 2634 if (phy_drv_tunable) { 2635 mutex_lock(&phydev->lock); 2636 ret = phydev->drv->get_tunable(phydev, &tuna, data); 2637 mutex_unlock(&phydev->lock); 2638 } else { 2639 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); 2640 } 2641 if (ret) 2642 goto out; 2643 useraddr += sizeof(tuna); 2644 ret = -EFAULT; 2645 if (copy_to_user(useraddr, data, tuna.len)) 2646 goto out; 2647 ret = 0; 2648 2649 out: 2650 kfree(data); 2651 return ret; 2652 } 2653 2654 static int set_phy_tunable(struct net_device *dev, void __user *useraddr) 2655 { 2656 struct phy_device *phydev = dev->phydev; 2657 struct ethtool_tunable tuna; 2658 bool phy_drv_tunable; 2659 void *data; 2660 int ret; 2661 2662 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 2663 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) 2664 return -EOPNOTSUPP; 2665 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2666 return -EFAULT; 2667 ret = ethtool_phy_tunable_valid(&tuna); 2668 if (ret) 2669 return ret; 2670 useraddr += sizeof(tuna); 2671 data = memdup_user(useraddr, tuna.len); 2672 if (IS_ERR(data)) 2673 return PTR_ERR(data); 2674 if (phy_drv_tunable) { 2675 mutex_lock(&phydev->lock); 2676 ret = phydev->drv->set_tunable(phydev, &tuna, data); 2677 mutex_unlock(&phydev->lock); 2678 } else { 2679 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); 2680 } 2681 2682 kfree(data); 2683 return ret; 2684 } 2685 2686 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) 2687 { 2688 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; 2689 int rc; 2690 2691 if (!dev->ethtool_ops->get_fecparam) 2692 return -EOPNOTSUPP; 2693 2694 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); 2695 if (rc) 2696 return rc; 2697 2698 if (WARN_ON_ONCE(fecparam.reserved)) 2699 fecparam.reserved = 0; 2700 2701 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) 2702 return -EFAULT; 2703 return 0; 2704 } 2705 2706 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) 2707 { 2708 struct ethtool_fecparam fecparam; 2709 2710 if (!dev->ethtool_ops->set_fecparam) 2711 return -EOPNOTSUPP; 2712 2713 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) 2714 return -EFAULT; 2715 2716 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) 2717 return -EINVAL; 2718 2719 fecparam.active_fec = 0; 2720 fecparam.reserved = 0; 2721 2722 return dev->ethtool_ops->set_fecparam(dev, &fecparam); 2723 } 2724 2725 /* The main entry point in this file. Called from net/core/dev_ioctl.c */ 2726 2727 static int 2728 __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, 2729 u32 ethcmd, struct ethtool_devlink_compat *devlink_state) 2730 { 2731 struct net_device *dev; 2732 u32 sub_cmd; 2733 int rc; 2734 netdev_features_t old_features; 2735 2736 dev = __dev_get_by_name(net, ifr->ifr_name); 2737 if (!dev) 2738 return -ENODEV; 2739 2740 if (ethcmd == ETHTOOL_PERQUEUE) { 2741 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) 2742 return -EFAULT; 2743 } else { 2744 sub_cmd = ethcmd; 2745 } 2746 /* Allow some commands to be done by anyone */ 2747 switch (sub_cmd) { 2748 case ETHTOOL_GSET: 2749 case ETHTOOL_GDRVINFO: 2750 case ETHTOOL_GMSGLVL: 2751 case ETHTOOL_GLINK: 2752 case ETHTOOL_GCOALESCE: 2753 case ETHTOOL_GRINGPARAM: 2754 case ETHTOOL_GPAUSEPARAM: 2755 case ETHTOOL_GRXCSUM: 2756 case ETHTOOL_GTXCSUM: 2757 case ETHTOOL_GSG: 2758 case ETHTOOL_GSSET_INFO: 2759 case ETHTOOL_GSTRINGS: 2760 case ETHTOOL_GSTATS: 2761 case ETHTOOL_GPHYSTATS: 2762 case ETHTOOL_GTSO: 2763 case ETHTOOL_GPERMADDR: 2764 case ETHTOOL_GUFO: 2765 case ETHTOOL_GGSO: 2766 case ETHTOOL_GGRO: 2767 case ETHTOOL_GFLAGS: 2768 case ETHTOOL_GPFLAGS: 2769 case ETHTOOL_GRXFH: 2770 case ETHTOOL_GRXRINGS: 2771 case ETHTOOL_GRXCLSRLCNT: 2772 case ETHTOOL_GRXCLSRULE: 2773 case ETHTOOL_GRXCLSRLALL: 2774 case ETHTOOL_GRXFHINDIR: 2775 case ETHTOOL_GRSSH: 2776 case ETHTOOL_GFEATURES: 2777 case ETHTOOL_GCHANNELS: 2778 case ETHTOOL_GET_TS_INFO: 2779 case ETHTOOL_GEEE: 2780 case ETHTOOL_GTUNABLE: 2781 case ETHTOOL_PHY_GTUNABLE: 2782 case ETHTOOL_GLINKSETTINGS: 2783 case ETHTOOL_GFECPARAM: 2784 break; 2785 default: 2786 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 2787 return -EPERM; 2788 } 2789 2790 if (dev->dev.parent) 2791 pm_runtime_get_sync(dev->dev.parent); 2792 2793 if (!netif_device_present(dev)) { 2794 rc = -ENODEV; 2795 goto out; 2796 } 2797 2798 if (dev->ethtool_ops->begin) { 2799 rc = dev->ethtool_ops->begin(dev); 2800 if (rc < 0) 2801 goto out; 2802 } 2803 old_features = dev->features; 2804 2805 switch (ethcmd) { 2806 case ETHTOOL_GSET: 2807 rc = ethtool_get_settings(dev, useraddr); 2808 break; 2809 case ETHTOOL_SSET: 2810 rc = ethtool_set_settings(dev, useraddr); 2811 break; 2812 case ETHTOOL_GDRVINFO: 2813 rc = ethtool_get_drvinfo(dev, devlink_state); 2814 break; 2815 case ETHTOOL_GREGS: 2816 rc = ethtool_get_regs(dev, useraddr); 2817 break; 2818 case ETHTOOL_GWOL: 2819 rc = ethtool_get_wol(dev, useraddr); 2820 break; 2821 case ETHTOOL_SWOL: 2822 rc = ethtool_set_wol(dev, useraddr); 2823 break; 2824 case ETHTOOL_GMSGLVL: 2825 rc = ethtool_get_value(dev, useraddr, ethcmd, 2826 dev->ethtool_ops->get_msglevel); 2827 break; 2828 case ETHTOOL_SMSGLVL: 2829 rc = ethtool_set_value_void(dev, useraddr, 2830 dev->ethtool_ops->set_msglevel); 2831 if (!rc) 2832 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL); 2833 break; 2834 case ETHTOOL_GEEE: 2835 rc = ethtool_get_eee(dev, useraddr); 2836 break; 2837 case ETHTOOL_SEEE: 2838 rc = ethtool_set_eee(dev, useraddr); 2839 break; 2840 case ETHTOOL_NWAY_RST: 2841 rc = ethtool_nway_reset(dev); 2842 break; 2843 case ETHTOOL_GLINK: 2844 rc = ethtool_get_link(dev, useraddr); 2845 break; 2846 case ETHTOOL_GEEPROM: 2847 rc = ethtool_get_eeprom(dev, useraddr); 2848 break; 2849 case ETHTOOL_SEEPROM: 2850 rc = ethtool_set_eeprom(dev, useraddr); 2851 break; 2852 case ETHTOOL_GCOALESCE: 2853 rc = ethtool_get_coalesce(dev, useraddr); 2854 break; 2855 case ETHTOOL_SCOALESCE: 2856 rc = ethtool_set_coalesce(dev, useraddr); 2857 break; 2858 case ETHTOOL_GRINGPARAM: 2859 rc = ethtool_get_ringparam(dev, useraddr); 2860 break; 2861 case ETHTOOL_SRINGPARAM: 2862 rc = ethtool_set_ringparam(dev, useraddr); 2863 break; 2864 case ETHTOOL_GPAUSEPARAM: 2865 rc = ethtool_get_pauseparam(dev, useraddr); 2866 break; 2867 case ETHTOOL_SPAUSEPARAM: 2868 rc = ethtool_set_pauseparam(dev, useraddr); 2869 break; 2870 case ETHTOOL_TEST: 2871 rc = ethtool_self_test(dev, useraddr); 2872 break; 2873 case ETHTOOL_GSTRINGS: 2874 rc = ethtool_get_strings(dev, useraddr); 2875 break; 2876 case ETHTOOL_PHYS_ID: 2877 rc = ethtool_phys_id(dev, useraddr); 2878 break; 2879 case ETHTOOL_GSTATS: 2880 rc = ethtool_get_stats(dev, useraddr); 2881 break; 2882 case ETHTOOL_GPERMADDR: 2883 rc = ethtool_get_perm_addr(dev, useraddr); 2884 break; 2885 case ETHTOOL_GFLAGS: 2886 rc = ethtool_get_value(dev, useraddr, ethcmd, 2887 __ethtool_get_flags); 2888 break; 2889 case ETHTOOL_SFLAGS: 2890 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); 2891 break; 2892 case ETHTOOL_GPFLAGS: 2893 rc = ethtool_get_value(dev, useraddr, ethcmd, 2894 dev->ethtool_ops->get_priv_flags); 2895 if (!rc) 2896 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL); 2897 break; 2898 case ETHTOOL_SPFLAGS: 2899 rc = ethtool_set_value(dev, useraddr, 2900 dev->ethtool_ops->set_priv_flags); 2901 break; 2902 case ETHTOOL_GRXFH: 2903 case ETHTOOL_GRXRINGS: 2904 case ETHTOOL_GRXCLSRLCNT: 2905 case ETHTOOL_GRXCLSRULE: 2906 case ETHTOOL_GRXCLSRLALL: 2907 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); 2908 break; 2909 case ETHTOOL_SRXFH: 2910 case ETHTOOL_SRXCLSRLDEL: 2911 case ETHTOOL_SRXCLSRLINS: 2912 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); 2913 break; 2914 case ETHTOOL_FLASHDEV: 2915 rc = ethtool_flash_device(dev, devlink_state); 2916 break; 2917 case ETHTOOL_RESET: 2918 rc = ethtool_reset(dev, useraddr); 2919 break; 2920 case ETHTOOL_GSSET_INFO: 2921 rc = ethtool_get_sset_info(dev, useraddr); 2922 break; 2923 case ETHTOOL_GRXFHINDIR: 2924 rc = ethtool_get_rxfh_indir(dev, useraddr); 2925 break; 2926 case ETHTOOL_SRXFHINDIR: 2927 rc = ethtool_set_rxfh_indir(dev, useraddr); 2928 break; 2929 case ETHTOOL_GRSSH: 2930 rc = ethtool_get_rxfh(dev, useraddr); 2931 break; 2932 case ETHTOOL_SRSSH: 2933 rc = ethtool_set_rxfh(dev, useraddr); 2934 break; 2935 case ETHTOOL_GFEATURES: 2936 rc = ethtool_get_features(dev, useraddr); 2937 break; 2938 case ETHTOOL_SFEATURES: 2939 rc = ethtool_set_features(dev, useraddr); 2940 break; 2941 case ETHTOOL_GTXCSUM: 2942 case ETHTOOL_GRXCSUM: 2943 case ETHTOOL_GSG: 2944 case ETHTOOL_GTSO: 2945 case ETHTOOL_GGSO: 2946 case ETHTOOL_GGRO: 2947 rc = ethtool_get_one_feature(dev, useraddr, ethcmd); 2948 break; 2949 case ETHTOOL_STXCSUM: 2950 case ETHTOOL_SRXCSUM: 2951 case ETHTOOL_SSG: 2952 case ETHTOOL_STSO: 2953 case ETHTOOL_SGSO: 2954 case ETHTOOL_SGRO: 2955 rc = ethtool_set_one_feature(dev, useraddr, ethcmd); 2956 break; 2957 case ETHTOOL_GCHANNELS: 2958 rc = ethtool_get_channels(dev, useraddr); 2959 break; 2960 case ETHTOOL_SCHANNELS: 2961 rc = ethtool_set_channels(dev, useraddr); 2962 break; 2963 case ETHTOOL_SET_DUMP: 2964 rc = ethtool_set_dump(dev, useraddr); 2965 break; 2966 case ETHTOOL_GET_DUMP_FLAG: 2967 rc = ethtool_get_dump_flag(dev, useraddr); 2968 break; 2969 case ETHTOOL_GET_DUMP_DATA: 2970 rc = ethtool_get_dump_data(dev, useraddr); 2971 break; 2972 case ETHTOOL_GET_TS_INFO: 2973 rc = ethtool_get_ts_info(dev, useraddr); 2974 break; 2975 case ETHTOOL_GMODULEINFO: 2976 rc = ethtool_get_module_info(dev, useraddr); 2977 break; 2978 case ETHTOOL_GMODULEEEPROM: 2979 rc = ethtool_get_module_eeprom(dev, useraddr); 2980 break; 2981 case ETHTOOL_GTUNABLE: 2982 rc = ethtool_get_tunable(dev, useraddr); 2983 break; 2984 case ETHTOOL_STUNABLE: 2985 rc = ethtool_set_tunable(dev, useraddr); 2986 break; 2987 case ETHTOOL_GPHYSTATS: 2988 rc = ethtool_get_phy_stats(dev, useraddr); 2989 break; 2990 case ETHTOOL_PERQUEUE: 2991 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); 2992 break; 2993 case ETHTOOL_GLINKSETTINGS: 2994 rc = ethtool_get_link_ksettings(dev, useraddr); 2995 break; 2996 case ETHTOOL_SLINKSETTINGS: 2997 rc = ethtool_set_link_ksettings(dev, useraddr); 2998 break; 2999 case ETHTOOL_PHY_GTUNABLE: 3000 rc = get_phy_tunable(dev, useraddr); 3001 break; 3002 case ETHTOOL_PHY_STUNABLE: 3003 rc = set_phy_tunable(dev, useraddr); 3004 break; 3005 case ETHTOOL_GFECPARAM: 3006 rc = ethtool_get_fecparam(dev, useraddr); 3007 break; 3008 case ETHTOOL_SFECPARAM: 3009 rc = ethtool_set_fecparam(dev, useraddr); 3010 break; 3011 default: 3012 rc = -EOPNOTSUPP; 3013 } 3014 3015 if (dev->ethtool_ops->complete) 3016 dev->ethtool_ops->complete(dev); 3017 3018 if (old_features != dev->features) 3019 netdev_features_change(dev); 3020 out: 3021 if (dev->dev.parent) 3022 pm_runtime_put(dev->dev.parent); 3023 3024 return rc; 3025 } 3026 3027 int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) 3028 { 3029 struct ethtool_devlink_compat *state; 3030 u32 ethcmd; 3031 int rc; 3032 3033 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) 3034 return -EFAULT; 3035 3036 state = kzalloc(sizeof(*state), GFP_KERNEL); 3037 if (!state) 3038 return -ENOMEM; 3039 3040 switch (ethcmd) { 3041 case ETHTOOL_FLASHDEV: 3042 if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { 3043 rc = -EFAULT; 3044 goto exit_free; 3045 } 3046 state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; 3047 break; 3048 } 3049 3050 rtnl_lock(); 3051 rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); 3052 rtnl_unlock(); 3053 if (rc) 3054 goto exit_free; 3055 3056 switch (ethcmd) { 3057 case ETHTOOL_FLASHDEV: 3058 if (state->devlink) 3059 rc = devlink_compat_flash_update(state->devlink, 3060 state->efl.data); 3061 break; 3062 case ETHTOOL_GDRVINFO: 3063 if (state->devlink) 3064 devlink_compat_running_version(state->devlink, 3065 state->info.fw_version, 3066 sizeof(state->info.fw_version)); 3067 if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { 3068 rc = -EFAULT; 3069 goto exit_free; 3070 } 3071 break; 3072 } 3073 3074 exit_free: 3075 if (state->devlink) 3076 devlink_put(state->devlink); 3077 kfree(state); 3078 return rc; 3079 } 3080 3081 struct ethtool_rx_flow_key { 3082 struct flow_dissector_key_basic basic; 3083 union { 3084 struct flow_dissector_key_ipv4_addrs ipv4; 3085 struct flow_dissector_key_ipv6_addrs ipv6; 3086 }; 3087 struct flow_dissector_key_ports tp; 3088 struct flow_dissector_key_ip ip; 3089 struct flow_dissector_key_vlan vlan; 3090 struct flow_dissector_key_eth_addrs eth_addrs; 3091 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ 3092 3093 struct ethtool_rx_flow_match { 3094 struct flow_dissector dissector; 3095 struct ethtool_rx_flow_key key; 3096 struct ethtool_rx_flow_key mask; 3097 }; 3098 3099 struct ethtool_rx_flow_rule * 3100 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) 3101 { 3102 const struct ethtool_rx_flow_spec *fs = input->fs; 3103 static struct in6_addr zero_addr = {}; 3104 struct ethtool_rx_flow_match *match; 3105 struct ethtool_rx_flow_rule *flow; 3106 struct flow_action_entry *act; 3107 3108 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + 3109 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); 3110 if (!flow) 3111 return ERR_PTR(-ENOMEM); 3112 3113 /* ethtool_rx supports only one single action per rule. */ 3114 flow->rule = flow_rule_alloc(1); 3115 if (!flow->rule) { 3116 kfree(flow); 3117 return ERR_PTR(-ENOMEM); 3118 } 3119 3120 match = (struct ethtool_rx_flow_match *)flow->priv; 3121 flow->rule->match.dissector = &match->dissector; 3122 flow->rule->match.mask = &match->mask; 3123 flow->rule->match.key = &match->key; 3124 3125 match->mask.basic.n_proto = htons(0xffff); 3126 3127 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3128 case ETHER_FLOW: { 3129 const struct ethhdr *ether_spec, *ether_m_spec; 3130 3131 ether_spec = &fs->h_u.ether_spec; 3132 ether_m_spec = &fs->m_u.ether_spec; 3133 3134 if (!is_zero_ether_addr(ether_m_spec->h_source)) { 3135 ether_addr_copy(match->key.eth_addrs.src, 3136 ether_spec->h_source); 3137 ether_addr_copy(match->mask.eth_addrs.src, 3138 ether_m_spec->h_source); 3139 } 3140 if (!is_zero_ether_addr(ether_m_spec->h_dest)) { 3141 ether_addr_copy(match->key.eth_addrs.dst, 3142 ether_spec->h_dest); 3143 ether_addr_copy(match->mask.eth_addrs.dst, 3144 ether_m_spec->h_dest); 3145 } 3146 if (ether_m_spec->h_proto) { 3147 match->key.basic.n_proto = ether_spec->h_proto; 3148 match->mask.basic.n_proto = ether_m_spec->h_proto; 3149 } 3150 } 3151 break; 3152 case TCP_V4_FLOW: 3153 case UDP_V4_FLOW: { 3154 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; 3155 3156 match->key.basic.n_proto = htons(ETH_P_IP); 3157 3158 v4_spec = &fs->h_u.tcp_ip4_spec; 3159 v4_m_spec = &fs->m_u.tcp_ip4_spec; 3160 3161 if (v4_m_spec->ip4src) { 3162 match->key.ipv4.src = v4_spec->ip4src; 3163 match->mask.ipv4.src = v4_m_spec->ip4src; 3164 } 3165 if (v4_m_spec->ip4dst) { 3166 match->key.ipv4.dst = v4_spec->ip4dst; 3167 match->mask.ipv4.dst = v4_m_spec->ip4dst; 3168 } 3169 if (v4_m_spec->ip4src || 3170 v4_m_spec->ip4dst) { 3171 match->dissector.used_keys |= 3172 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS); 3173 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = 3174 offsetof(struct ethtool_rx_flow_key, ipv4); 3175 } 3176 if (v4_m_spec->psrc) { 3177 match->key.tp.src = v4_spec->psrc; 3178 match->mask.tp.src = v4_m_spec->psrc; 3179 } 3180 if (v4_m_spec->pdst) { 3181 match->key.tp.dst = v4_spec->pdst; 3182 match->mask.tp.dst = v4_m_spec->pdst; 3183 } 3184 if (v4_m_spec->psrc || 3185 v4_m_spec->pdst) { 3186 match->dissector.used_keys |= 3187 BIT(FLOW_DISSECTOR_KEY_PORTS); 3188 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3189 offsetof(struct ethtool_rx_flow_key, tp); 3190 } 3191 if (v4_m_spec->tos) { 3192 match->key.ip.tos = v4_spec->tos; 3193 match->mask.ip.tos = v4_m_spec->tos; 3194 match->dissector.used_keys |= 3195 BIT(FLOW_DISSECTOR_KEY_IP); 3196 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3197 offsetof(struct ethtool_rx_flow_key, ip); 3198 } 3199 } 3200 break; 3201 case TCP_V6_FLOW: 3202 case UDP_V6_FLOW: { 3203 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; 3204 3205 match->key.basic.n_proto = htons(ETH_P_IPV6); 3206 3207 v6_spec = &fs->h_u.tcp_ip6_spec; 3208 v6_m_spec = &fs->m_u.tcp_ip6_spec; 3209 if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr))) { 3210 memcpy(&match->key.ipv6.src, v6_spec->ip6src, 3211 sizeof(match->key.ipv6.src)); 3212 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, 3213 sizeof(match->mask.ipv6.src)); 3214 } 3215 if (memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) { 3216 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, 3217 sizeof(match->key.ipv6.dst)); 3218 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, 3219 sizeof(match->mask.ipv6.dst)); 3220 } 3221 if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr)) || 3222 memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) { 3223 match->dissector.used_keys |= 3224 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS); 3225 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = 3226 offsetof(struct ethtool_rx_flow_key, ipv6); 3227 } 3228 if (v6_m_spec->psrc) { 3229 match->key.tp.src = v6_spec->psrc; 3230 match->mask.tp.src = v6_m_spec->psrc; 3231 } 3232 if (v6_m_spec->pdst) { 3233 match->key.tp.dst = v6_spec->pdst; 3234 match->mask.tp.dst = v6_m_spec->pdst; 3235 } 3236 if (v6_m_spec->psrc || 3237 v6_m_spec->pdst) { 3238 match->dissector.used_keys |= 3239 BIT(FLOW_DISSECTOR_KEY_PORTS); 3240 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3241 offsetof(struct ethtool_rx_flow_key, tp); 3242 } 3243 if (v6_m_spec->tclass) { 3244 match->key.ip.tos = v6_spec->tclass; 3245 match->mask.ip.tos = v6_m_spec->tclass; 3246 match->dissector.used_keys |= 3247 BIT(FLOW_DISSECTOR_KEY_IP); 3248 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3249 offsetof(struct ethtool_rx_flow_key, ip); 3250 } 3251 } 3252 break; 3253 default: 3254 ethtool_rx_flow_rule_destroy(flow); 3255 return ERR_PTR(-EINVAL); 3256 } 3257 3258 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3259 case TCP_V4_FLOW: 3260 case TCP_V6_FLOW: 3261 match->key.basic.ip_proto = IPPROTO_TCP; 3262 match->mask.basic.ip_proto = 0xff; 3263 break; 3264 case UDP_V4_FLOW: 3265 case UDP_V6_FLOW: 3266 match->key.basic.ip_proto = IPPROTO_UDP; 3267 match->mask.basic.ip_proto = 0xff; 3268 break; 3269 } 3270 3271 match->dissector.used_keys |= BIT(FLOW_DISSECTOR_KEY_BASIC); 3272 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = 3273 offsetof(struct ethtool_rx_flow_key, basic); 3274 3275 if (fs->flow_type & FLOW_EXT) { 3276 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3277 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3278 3279 if (ext_m_spec->vlan_etype) { 3280 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; 3281 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; 3282 } 3283 3284 if (ext_m_spec->vlan_tci) { 3285 match->key.vlan.vlan_id = 3286 ntohs(ext_h_spec->vlan_tci) & 0x0fff; 3287 match->mask.vlan.vlan_id = 3288 ntohs(ext_m_spec->vlan_tci) & 0x0fff; 3289 3290 match->key.vlan.vlan_dei = 3291 !!(ext_h_spec->vlan_tci & htons(0x1000)); 3292 match->mask.vlan.vlan_dei = 3293 !!(ext_m_spec->vlan_tci & htons(0x1000)); 3294 3295 match->key.vlan.vlan_priority = 3296 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; 3297 match->mask.vlan.vlan_priority = 3298 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; 3299 } 3300 3301 if (ext_m_spec->vlan_etype || 3302 ext_m_spec->vlan_tci) { 3303 match->dissector.used_keys |= 3304 BIT(FLOW_DISSECTOR_KEY_VLAN); 3305 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = 3306 offsetof(struct ethtool_rx_flow_key, vlan); 3307 } 3308 } 3309 if (fs->flow_type & FLOW_MAC_EXT) { 3310 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3311 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3312 3313 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, 3314 ETH_ALEN); 3315 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, 3316 ETH_ALEN); 3317 3318 match->dissector.used_keys |= 3319 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS); 3320 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = 3321 offsetof(struct ethtool_rx_flow_key, eth_addrs); 3322 } 3323 3324 act = &flow->rule->action.entries[0]; 3325 switch (fs->ring_cookie) { 3326 case RX_CLS_FLOW_DISC: 3327 act->id = FLOW_ACTION_DROP; 3328 break; 3329 case RX_CLS_FLOW_WAKE: 3330 act->id = FLOW_ACTION_WAKE; 3331 break; 3332 default: 3333 act->id = FLOW_ACTION_QUEUE; 3334 if (fs->flow_type & FLOW_RSS) 3335 act->queue.ctx = input->rss_ctx; 3336 3337 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); 3338 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); 3339 break; 3340 } 3341 3342 return flow; 3343 } 3344 EXPORT_SYMBOL(ethtool_rx_flow_rule_create); 3345 3346 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) 3347 { 3348 kfree(flow->rule); 3349 kfree(flow); 3350 } 3351 EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); 3352