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 if (!dev->devlink_port) 48 return NULL; 49 return devlink_try_get(dev->devlink_port->devlink); 50 } 51 52 /* 53 * Some useful ethtool_ops methods that're device independent. 54 * If we find that all drivers want to do the same thing here, 55 * we can turn these into dev_() function calls. 56 */ 57 58 u32 ethtool_op_get_link(struct net_device *dev) 59 { 60 return netif_carrier_ok(dev) ? 1 : 0; 61 } 62 EXPORT_SYMBOL(ethtool_op_get_link); 63 64 int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info) 65 { 66 info->so_timestamping = 67 SOF_TIMESTAMPING_TX_SOFTWARE | 68 SOF_TIMESTAMPING_RX_SOFTWARE | 69 SOF_TIMESTAMPING_SOFTWARE; 70 info->phc_index = -1; 71 return 0; 72 } 73 EXPORT_SYMBOL(ethtool_op_get_ts_info); 74 75 /* Handlers for each ethtool command */ 76 77 static int ethtool_get_features(struct net_device *dev, void __user *useraddr) 78 { 79 struct ethtool_gfeatures cmd = { 80 .cmd = ETHTOOL_GFEATURES, 81 .size = ETHTOOL_DEV_FEATURE_WORDS, 82 }; 83 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 84 u32 __user *sizeaddr; 85 u32 copy_size; 86 int i; 87 88 /* in case feature bits run out again */ 89 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); 90 91 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 92 features[i].available = (u32)(dev->hw_features >> (32 * i)); 93 features[i].requested = (u32)(dev->wanted_features >> (32 * i)); 94 features[i].active = (u32)(dev->features >> (32 * i)); 95 features[i].never_changed = 96 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); 97 } 98 99 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); 100 if (get_user(copy_size, sizeaddr)) 101 return -EFAULT; 102 103 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) 104 copy_size = ETHTOOL_DEV_FEATURE_WORDS; 105 106 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 107 return -EFAULT; 108 useraddr += sizeof(cmd); 109 if (copy_to_user(useraddr, features, 110 array_size(copy_size, sizeof(*features)))) 111 return -EFAULT; 112 113 return 0; 114 } 115 116 static int ethtool_set_features(struct net_device *dev, void __user *useraddr) 117 { 118 struct ethtool_sfeatures cmd; 119 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 120 netdev_features_t wanted = 0, valid = 0; 121 int i, ret = 0; 122 123 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 124 return -EFAULT; 125 useraddr += sizeof(cmd); 126 127 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) 128 return -EINVAL; 129 130 if (copy_from_user(features, useraddr, sizeof(features))) 131 return -EFAULT; 132 133 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 134 valid |= (netdev_features_t)features[i].valid << (32 * i); 135 wanted |= (netdev_features_t)features[i].requested << (32 * i); 136 } 137 138 if (valid & ~NETIF_F_ETHTOOL_BITS) 139 return -EINVAL; 140 141 if (valid & ~dev->hw_features) { 142 valid &= dev->hw_features; 143 ret |= ETHTOOL_F_UNSUPPORTED; 144 } 145 146 dev->wanted_features &= ~valid; 147 dev->wanted_features |= wanted & valid; 148 __netdev_update_features(dev); 149 150 if ((dev->wanted_features ^ dev->features) & valid) 151 ret |= ETHTOOL_F_WISH; 152 153 return ret; 154 } 155 156 static int __ethtool_get_sset_count(struct net_device *dev, int sset) 157 { 158 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 159 const struct ethtool_ops *ops = dev->ethtool_ops; 160 161 if (sset == ETH_SS_FEATURES) 162 return ARRAY_SIZE(netdev_features_strings); 163 164 if (sset == ETH_SS_RSS_HASH_FUNCS) 165 return ARRAY_SIZE(rss_hash_func_strings); 166 167 if (sset == ETH_SS_TUNABLES) 168 return ARRAY_SIZE(tunable_strings); 169 170 if (sset == ETH_SS_PHY_TUNABLES) 171 return ARRAY_SIZE(phy_tunable_strings); 172 173 if (sset == ETH_SS_PHY_STATS && dev->phydev && 174 !ops->get_ethtool_phy_stats && 175 phy_ops && phy_ops->get_sset_count) 176 return phy_ops->get_sset_count(dev->phydev); 177 178 if (sset == ETH_SS_LINK_MODES) 179 return __ETHTOOL_LINK_MODE_MASK_NBITS; 180 181 if (ops->get_sset_count && ops->get_strings) 182 return ops->get_sset_count(dev, sset); 183 else 184 return -EOPNOTSUPP; 185 } 186 187 static void __ethtool_get_strings(struct net_device *dev, 188 u32 stringset, u8 *data) 189 { 190 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 191 const struct ethtool_ops *ops = dev->ethtool_ops; 192 193 if (stringset == ETH_SS_FEATURES) 194 memcpy(data, netdev_features_strings, 195 sizeof(netdev_features_strings)); 196 else if (stringset == ETH_SS_RSS_HASH_FUNCS) 197 memcpy(data, rss_hash_func_strings, 198 sizeof(rss_hash_func_strings)); 199 else if (stringset == ETH_SS_TUNABLES) 200 memcpy(data, tunable_strings, sizeof(tunable_strings)); 201 else if (stringset == ETH_SS_PHY_TUNABLES) 202 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); 203 else if (stringset == ETH_SS_PHY_STATS && dev->phydev && 204 !ops->get_ethtool_phy_stats && phy_ops && 205 phy_ops->get_strings) 206 phy_ops->get_strings(dev->phydev, data); 207 else if (stringset == ETH_SS_LINK_MODES) 208 memcpy(data, link_mode_names, 209 __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN); 210 else 211 /* ops->get_strings is valid because checked earlier */ 212 ops->get_strings(dev, stringset, data); 213 } 214 215 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) 216 { 217 /* feature masks of legacy discrete ethtool ops */ 218 219 switch (eth_cmd) { 220 case ETHTOOL_GTXCSUM: 221 case ETHTOOL_STXCSUM: 222 return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC | 223 NETIF_F_SCTP_CRC; 224 case ETHTOOL_GRXCSUM: 225 case ETHTOOL_SRXCSUM: 226 return NETIF_F_RXCSUM; 227 case ETHTOOL_GSG: 228 case ETHTOOL_SSG: 229 return NETIF_F_SG | NETIF_F_FRAGLIST; 230 case ETHTOOL_GTSO: 231 case ETHTOOL_STSO: 232 return NETIF_F_ALL_TSO; 233 case ETHTOOL_GGSO: 234 case ETHTOOL_SGSO: 235 return NETIF_F_GSO; 236 case ETHTOOL_GGRO: 237 case ETHTOOL_SGRO: 238 return NETIF_F_GRO; 239 default: 240 BUG(); 241 } 242 } 243 244 static int ethtool_get_one_feature(struct net_device *dev, 245 char __user *useraddr, u32 ethcmd) 246 { 247 netdev_features_t mask = ethtool_get_feature_mask(ethcmd); 248 struct ethtool_value edata = { 249 .cmd = ethcmd, 250 .data = !!(dev->features & mask), 251 }; 252 253 if (copy_to_user(useraddr, &edata, sizeof(edata))) 254 return -EFAULT; 255 return 0; 256 } 257 258 static int ethtool_set_one_feature(struct net_device *dev, 259 void __user *useraddr, u32 ethcmd) 260 { 261 struct ethtool_value edata; 262 netdev_features_t mask; 263 264 if (copy_from_user(&edata, useraddr, sizeof(edata))) 265 return -EFAULT; 266 267 mask = ethtool_get_feature_mask(ethcmd); 268 mask &= dev->hw_features; 269 if (!mask) 270 return -EOPNOTSUPP; 271 272 if (edata.data) 273 dev->wanted_features |= mask; 274 else 275 dev->wanted_features &= ~mask; 276 277 __netdev_update_features(dev); 278 279 return 0; 280 } 281 282 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ 283 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) 284 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ 285 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ 286 NETIF_F_RXHASH) 287 288 static u32 __ethtool_get_flags(struct net_device *dev) 289 { 290 u32 flags = 0; 291 292 if (dev->features & NETIF_F_LRO) 293 flags |= ETH_FLAG_LRO; 294 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 295 flags |= ETH_FLAG_RXVLAN; 296 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) 297 flags |= ETH_FLAG_TXVLAN; 298 if (dev->features & NETIF_F_NTUPLE) 299 flags |= ETH_FLAG_NTUPLE; 300 if (dev->features & NETIF_F_RXHASH) 301 flags |= ETH_FLAG_RXHASH; 302 303 return flags; 304 } 305 306 static int __ethtool_set_flags(struct net_device *dev, u32 data) 307 { 308 netdev_features_t features = 0, changed; 309 310 if (data & ~ETH_ALL_FLAGS) 311 return -EINVAL; 312 313 if (data & ETH_FLAG_LRO) 314 features |= NETIF_F_LRO; 315 if (data & ETH_FLAG_RXVLAN) 316 features |= NETIF_F_HW_VLAN_CTAG_RX; 317 if (data & ETH_FLAG_TXVLAN) 318 features |= NETIF_F_HW_VLAN_CTAG_TX; 319 if (data & ETH_FLAG_NTUPLE) 320 features |= NETIF_F_NTUPLE; 321 if (data & ETH_FLAG_RXHASH) 322 features |= NETIF_F_RXHASH; 323 324 /* allow changing only bits set in hw_features */ 325 changed = (features ^ dev->features) & ETH_ALL_FEATURES; 326 if (changed & ~dev->hw_features) 327 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; 328 329 dev->wanted_features = 330 (dev->wanted_features & ~changed) | (features & changed); 331 332 __netdev_update_features(dev); 333 334 return 0; 335 } 336 337 /* Given two link masks, AND them together and save the result in dst. */ 338 void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, 339 struct ethtool_link_ksettings *src) 340 { 341 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); 342 unsigned int idx = 0; 343 344 for (; idx < size; idx++) { 345 dst->link_modes.supported[idx] &= 346 src->link_modes.supported[idx]; 347 dst->link_modes.advertising[idx] &= 348 src->link_modes.advertising[idx]; 349 } 350 } 351 EXPORT_SYMBOL(ethtool_intersect_link_masks); 352 353 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, 354 u32 legacy_u32) 355 { 356 linkmode_zero(dst); 357 dst[0] = legacy_u32; 358 } 359 EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); 360 361 /* return false if src had higher bits set. lower bits always updated. */ 362 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, 363 const unsigned long *src) 364 { 365 *legacy_u32 = src[0]; 366 return find_next_bit(src, __ETHTOOL_LINK_MODE_MASK_NBITS, 32) == 367 __ETHTOOL_LINK_MODE_MASK_NBITS; 368 } 369 EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); 370 371 /* return false if ksettings link modes had higher bits 372 * set. legacy_settings always updated (best effort) 373 */ 374 static bool 375 convert_link_ksettings_to_legacy_settings( 376 struct ethtool_cmd *legacy_settings, 377 const struct ethtool_link_ksettings *link_ksettings) 378 { 379 bool retval = true; 380 381 memset(legacy_settings, 0, sizeof(*legacy_settings)); 382 /* this also clears the deprecated fields in legacy structure: 383 * __u8 transceiver; 384 * __u32 maxtxpkt; 385 * __u32 maxrxpkt; 386 */ 387 388 retval &= ethtool_convert_link_mode_to_legacy_u32( 389 &legacy_settings->supported, 390 link_ksettings->link_modes.supported); 391 retval &= ethtool_convert_link_mode_to_legacy_u32( 392 &legacy_settings->advertising, 393 link_ksettings->link_modes.advertising); 394 retval &= ethtool_convert_link_mode_to_legacy_u32( 395 &legacy_settings->lp_advertising, 396 link_ksettings->link_modes.lp_advertising); 397 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); 398 legacy_settings->duplex 399 = link_ksettings->base.duplex; 400 legacy_settings->port 401 = link_ksettings->base.port; 402 legacy_settings->phy_address 403 = link_ksettings->base.phy_address; 404 legacy_settings->autoneg 405 = link_ksettings->base.autoneg; 406 legacy_settings->mdio_support 407 = link_ksettings->base.mdio_support; 408 legacy_settings->eth_tp_mdix 409 = link_ksettings->base.eth_tp_mdix; 410 legacy_settings->eth_tp_mdix_ctrl 411 = link_ksettings->base.eth_tp_mdix_ctrl; 412 legacy_settings->transceiver 413 = link_ksettings->base.transceiver; 414 return retval; 415 } 416 417 /* number of 32-bit words to store the user's link mode bitmaps */ 418 #define __ETHTOOL_LINK_MODE_MASK_NU32 \ 419 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) 420 421 /* layout of the struct passed from/to userland */ 422 struct ethtool_link_usettings { 423 struct ethtool_link_settings base; 424 struct { 425 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; 426 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 427 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 428 } link_modes; 429 }; 430 431 /* Internal kernel helper to query a device ethtool_link_settings. */ 432 int __ethtool_get_link_ksettings(struct net_device *dev, 433 struct ethtool_link_ksettings *link_ksettings) 434 { 435 ASSERT_RTNL(); 436 437 if (!dev->ethtool_ops->get_link_ksettings) 438 return -EOPNOTSUPP; 439 440 memset(link_ksettings, 0, sizeof(*link_ksettings)); 441 return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings); 442 } 443 EXPORT_SYMBOL(__ethtool_get_link_ksettings); 444 445 /* convert ethtool_link_usettings in user space to a kernel internal 446 * ethtool_link_ksettings. return 0 on success, errno on error. 447 */ 448 static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, 449 const void __user *from) 450 { 451 struct ethtool_link_usettings link_usettings; 452 453 if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) 454 return -EFAULT; 455 456 memcpy(&to->base, &link_usettings.base, sizeof(to->base)); 457 bitmap_from_arr32(to->link_modes.supported, 458 link_usettings.link_modes.supported, 459 __ETHTOOL_LINK_MODE_MASK_NBITS); 460 bitmap_from_arr32(to->link_modes.advertising, 461 link_usettings.link_modes.advertising, 462 __ETHTOOL_LINK_MODE_MASK_NBITS); 463 bitmap_from_arr32(to->link_modes.lp_advertising, 464 link_usettings.link_modes.lp_advertising, 465 __ETHTOOL_LINK_MODE_MASK_NBITS); 466 467 return 0; 468 } 469 470 /* Check if the user is trying to change anything besides speed/duplex */ 471 bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd) 472 { 473 struct ethtool_link_settings base2 = {}; 474 475 base2.speed = cmd->base.speed; 476 base2.port = PORT_OTHER; 477 base2.duplex = cmd->base.duplex; 478 base2.cmd = cmd->base.cmd; 479 base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords; 480 481 return !memcmp(&base2, &cmd->base, sizeof(base2)) && 482 bitmap_empty(cmd->link_modes.supported, 483 __ETHTOOL_LINK_MODE_MASK_NBITS) && 484 bitmap_empty(cmd->link_modes.lp_advertising, 485 __ETHTOOL_LINK_MODE_MASK_NBITS); 486 } 487 488 /* convert a kernel internal ethtool_link_ksettings to 489 * ethtool_link_usettings in user space. return 0 on success, errno on 490 * error. 491 */ 492 static int 493 store_link_ksettings_for_user(void __user *to, 494 const struct ethtool_link_ksettings *from) 495 { 496 struct ethtool_link_usettings link_usettings; 497 498 memcpy(&link_usettings, from, sizeof(link_usettings)); 499 bitmap_to_arr32(link_usettings.link_modes.supported, 500 from->link_modes.supported, 501 __ETHTOOL_LINK_MODE_MASK_NBITS); 502 bitmap_to_arr32(link_usettings.link_modes.advertising, 503 from->link_modes.advertising, 504 __ETHTOOL_LINK_MODE_MASK_NBITS); 505 bitmap_to_arr32(link_usettings.link_modes.lp_advertising, 506 from->link_modes.lp_advertising, 507 __ETHTOOL_LINK_MODE_MASK_NBITS); 508 509 if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) 510 return -EFAULT; 511 512 return 0; 513 } 514 515 /* Query device for its ethtool_link_settings. */ 516 static int ethtool_get_link_ksettings(struct net_device *dev, 517 void __user *useraddr) 518 { 519 int err = 0; 520 struct ethtool_link_ksettings link_ksettings; 521 522 ASSERT_RTNL(); 523 if (!dev->ethtool_ops->get_link_ksettings) 524 return -EOPNOTSUPP; 525 526 /* handle bitmap nbits handshake */ 527 if (copy_from_user(&link_ksettings.base, useraddr, 528 sizeof(link_ksettings.base))) 529 return -EFAULT; 530 531 if (__ETHTOOL_LINK_MODE_MASK_NU32 532 != link_ksettings.base.link_mode_masks_nwords) { 533 /* wrong link mode nbits requested */ 534 memset(&link_ksettings, 0, sizeof(link_ksettings)); 535 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 536 /* send back number of words required as negative val */ 537 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, 538 "need too many bits for link modes!"); 539 link_ksettings.base.link_mode_masks_nwords 540 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); 541 542 /* copy the base fields back to user, not the link 543 * mode bitmaps 544 */ 545 if (copy_to_user(useraddr, &link_ksettings.base, 546 sizeof(link_ksettings.base))) 547 return -EFAULT; 548 549 return 0; 550 } 551 552 /* handshake successful: user/kernel agree on 553 * link_mode_masks_nwords 554 */ 555 556 memset(&link_ksettings, 0, sizeof(link_ksettings)); 557 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 558 if (err < 0) 559 return err; 560 561 /* make sure we tell the right values to user */ 562 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 563 link_ksettings.base.link_mode_masks_nwords 564 = __ETHTOOL_LINK_MODE_MASK_NU32; 565 link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED; 566 link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED; 567 link_ksettings.base.rate_matching = RATE_MATCH_NONE; 568 569 return store_link_ksettings_for_user(useraddr, &link_ksettings); 570 } 571 572 /* Update device ethtool_link_settings. */ 573 static int ethtool_set_link_ksettings(struct net_device *dev, 574 void __user *useraddr) 575 { 576 int err; 577 struct ethtool_link_ksettings link_ksettings; 578 579 ASSERT_RTNL(); 580 581 if (!dev->ethtool_ops->set_link_ksettings) 582 return -EOPNOTSUPP; 583 584 /* make sure nbits field has expected value */ 585 if (copy_from_user(&link_ksettings.base, useraddr, 586 sizeof(link_ksettings.base))) 587 return -EFAULT; 588 589 if (__ETHTOOL_LINK_MODE_MASK_NU32 590 != link_ksettings.base.link_mode_masks_nwords) 591 return -EINVAL; 592 593 /* copy the whole structure, now that we know it has expected 594 * format 595 */ 596 err = load_link_ksettings_from_user(&link_ksettings, useraddr); 597 if (err) 598 return err; 599 600 /* re-check nwords field, just in case */ 601 if (__ETHTOOL_LINK_MODE_MASK_NU32 602 != link_ksettings.base.link_mode_masks_nwords) 603 return -EINVAL; 604 605 if (link_ksettings.base.master_slave_cfg || 606 link_ksettings.base.master_slave_state) 607 return -EINVAL; 608 609 err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 610 if (err >= 0) { 611 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); 612 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); 613 } 614 return err; 615 } 616 617 int ethtool_virtdev_set_link_ksettings(struct net_device *dev, 618 const struct ethtool_link_ksettings *cmd, 619 u32 *dev_speed, u8 *dev_duplex) 620 { 621 u32 speed; 622 u8 duplex; 623 624 speed = cmd->base.speed; 625 duplex = cmd->base.duplex; 626 /* don't allow custom speed and duplex */ 627 if (!ethtool_validate_speed(speed) || 628 !ethtool_validate_duplex(duplex) || 629 !ethtool_virtdev_validate_cmd(cmd)) 630 return -EINVAL; 631 *dev_speed = speed; 632 *dev_duplex = duplex; 633 634 return 0; 635 } 636 EXPORT_SYMBOL(ethtool_virtdev_set_link_ksettings); 637 638 /* Query device for its ethtool_cmd settings. 639 * 640 * Backward compatibility note: for compatibility with legacy ethtool, this is 641 * now implemented via get_link_ksettings. When driver reports higher link mode 642 * bits, a kernel warning is logged once (with name of 1st driver/device) to 643 * recommend user to upgrade ethtool, but the command is successful (only the 644 * lower link mode bits reported back to user). Deprecated fields from 645 * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero. 646 */ 647 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) 648 { 649 struct ethtool_link_ksettings link_ksettings; 650 struct ethtool_cmd cmd; 651 int err; 652 653 ASSERT_RTNL(); 654 if (!dev->ethtool_ops->get_link_ksettings) 655 return -EOPNOTSUPP; 656 657 memset(&link_ksettings, 0, sizeof(link_ksettings)); 658 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 659 if (err < 0) 660 return err; 661 convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings); 662 663 /* send a sensible cmd tag back to user */ 664 cmd.cmd = ETHTOOL_GSET; 665 666 if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 667 return -EFAULT; 668 669 return 0; 670 } 671 672 /* Update device link settings with given ethtool_cmd. 673 * 674 * Backward compatibility note: for compatibility with legacy ethtool, this is 675 * now always implemented via set_link_settings. When user's request updates 676 * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel 677 * warning is logged once (with name of 1st driver/device) to recommend user to 678 * upgrade ethtool, and the request is rejected. 679 */ 680 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) 681 { 682 struct ethtool_link_ksettings link_ksettings; 683 struct ethtool_cmd cmd; 684 int ret; 685 686 ASSERT_RTNL(); 687 688 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 689 return -EFAULT; 690 if (!dev->ethtool_ops->set_link_ksettings) 691 return -EOPNOTSUPP; 692 693 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd)) 694 return -EINVAL; 695 link_ksettings.base.link_mode_masks_nwords = 696 __ETHTOOL_LINK_MODE_MASK_NU32; 697 ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 698 if (ret >= 0) { 699 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); 700 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); 701 } 702 return ret; 703 } 704 705 static int 706 ethtool_get_drvinfo(struct net_device *dev, struct ethtool_devlink_compat *rsp) 707 { 708 const struct ethtool_ops *ops = dev->ethtool_ops; 709 struct device *parent = dev->dev.parent; 710 711 rsp->info.cmd = ETHTOOL_GDRVINFO; 712 strscpy(rsp->info.version, UTS_RELEASE, sizeof(rsp->info.version)); 713 if (ops->get_drvinfo) { 714 ops->get_drvinfo(dev, &rsp->info); 715 if (!rsp->info.bus_info[0] && parent) 716 strscpy(rsp->info.bus_info, dev_name(parent), 717 sizeof(rsp->info.bus_info)); 718 if (!rsp->info.driver[0] && parent && parent->driver) 719 strscpy(rsp->info.driver, parent->driver->name, 720 sizeof(rsp->info.driver)); 721 } else if (parent && parent->driver) { 722 strscpy(rsp->info.bus_info, dev_name(parent), 723 sizeof(rsp->info.bus_info)); 724 strscpy(rsp->info.driver, parent->driver->name, 725 sizeof(rsp->info.driver)); 726 } else if (dev->rtnl_link_ops) { 727 strscpy(rsp->info.driver, dev->rtnl_link_ops->kind, 728 sizeof(rsp->info.driver)); 729 } else { 730 return -EOPNOTSUPP; 731 } 732 733 /* 734 * this method of obtaining string set info is deprecated; 735 * Use ETHTOOL_GSSET_INFO instead. 736 */ 737 if (ops->get_sset_count) { 738 int rc; 739 740 rc = ops->get_sset_count(dev, ETH_SS_TEST); 741 if (rc >= 0) 742 rsp->info.testinfo_len = rc; 743 rc = ops->get_sset_count(dev, ETH_SS_STATS); 744 if (rc >= 0) 745 rsp->info.n_stats = rc; 746 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); 747 if (rc >= 0) 748 rsp->info.n_priv_flags = rc; 749 } 750 if (ops->get_regs_len) { 751 int ret = ops->get_regs_len(dev); 752 753 if (ret > 0) 754 rsp->info.regdump_len = ret; 755 } 756 757 if (ops->get_eeprom_len) 758 rsp->info.eedump_len = ops->get_eeprom_len(dev); 759 760 if (!rsp->info.fw_version[0]) 761 rsp->devlink = netdev_to_devlink_get(dev); 762 763 return 0; 764 } 765 766 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, 767 void __user *useraddr) 768 { 769 struct ethtool_sset_info info; 770 u64 sset_mask; 771 int i, idx = 0, n_bits = 0, ret, rc; 772 u32 *info_buf = NULL; 773 774 if (copy_from_user(&info, useraddr, sizeof(info))) 775 return -EFAULT; 776 777 /* store copy of mask, because we zero struct later on */ 778 sset_mask = info.sset_mask; 779 if (!sset_mask) 780 return 0; 781 782 /* calculate size of return buffer */ 783 n_bits = hweight64(sset_mask); 784 785 memset(&info, 0, sizeof(info)); 786 info.cmd = ETHTOOL_GSSET_INFO; 787 788 info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER); 789 if (!info_buf) 790 return -ENOMEM; 791 792 /* 793 * fill return buffer based on input bitmask and successful 794 * get_sset_count return 795 */ 796 for (i = 0; i < 64; i++) { 797 if (!(sset_mask & (1ULL << i))) 798 continue; 799 800 rc = __ethtool_get_sset_count(dev, i); 801 if (rc >= 0) { 802 info.sset_mask |= (1ULL << i); 803 info_buf[idx++] = rc; 804 } 805 } 806 807 ret = -EFAULT; 808 if (copy_to_user(useraddr, &info, sizeof(info))) 809 goto out; 810 811 useraddr += offsetof(struct ethtool_sset_info, data); 812 if (copy_to_user(useraddr, info_buf, array_size(idx, sizeof(u32)))) 813 goto out; 814 815 ret = 0; 816 817 out: 818 kfree(info_buf); 819 return ret; 820 } 821 822 static noinline_for_stack int 823 ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc, 824 const struct compat_ethtool_rxnfc __user *useraddr, 825 size_t size) 826 { 827 struct compat_ethtool_rxnfc crxnfc = {}; 828 829 /* We expect there to be holes between fs.m_ext and 830 * fs.ring_cookie and at the end of fs, but nowhere else. 831 * On non-x86, no conversion should be needed. 832 */ 833 BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) && 834 sizeof(struct compat_ethtool_rxnfc) != 835 sizeof(struct ethtool_rxnfc)); 836 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) + 837 sizeof(useraddr->fs.m_ext) != 838 offsetof(struct ethtool_rxnfc, fs.m_ext) + 839 sizeof(rxnfc->fs.m_ext)); 840 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) - 841 offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) != 842 offsetof(struct ethtool_rxnfc, fs.location) - 843 offsetof(struct ethtool_rxnfc, fs.ring_cookie)); 844 845 if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc)))) 846 return -EFAULT; 847 848 *rxnfc = (struct ethtool_rxnfc) { 849 .cmd = crxnfc.cmd, 850 .flow_type = crxnfc.flow_type, 851 .data = crxnfc.data, 852 .fs = { 853 .flow_type = crxnfc.fs.flow_type, 854 .h_u = crxnfc.fs.h_u, 855 .h_ext = crxnfc.fs.h_ext, 856 .m_u = crxnfc.fs.m_u, 857 .m_ext = crxnfc.fs.m_ext, 858 .ring_cookie = crxnfc.fs.ring_cookie, 859 .location = crxnfc.fs.location, 860 }, 861 .rule_cnt = crxnfc.rule_cnt, 862 }; 863 864 return 0; 865 } 866 867 static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc, 868 const void __user *useraddr, 869 size_t size) 870 { 871 if (compat_need_64bit_alignment_fixup()) 872 return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size); 873 874 if (copy_from_user(rxnfc, useraddr, size)) 875 return -EFAULT; 876 877 return 0; 878 } 879 880 static int ethtool_rxnfc_copy_to_compat(void __user *useraddr, 881 const struct ethtool_rxnfc *rxnfc, 882 size_t size, const u32 *rule_buf) 883 { 884 struct compat_ethtool_rxnfc crxnfc; 885 886 memset(&crxnfc, 0, sizeof(crxnfc)); 887 crxnfc = (struct compat_ethtool_rxnfc) { 888 .cmd = rxnfc->cmd, 889 .flow_type = rxnfc->flow_type, 890 .data = rxnfc->data, 891 .fs = { 892 .flow_type = rxnfc->fs.flow_type, 893 .h_u = rxnfc->fs.h_u, 894 .h_ext = rxnfc->fs.h_ext, 895 .m_u = rxnfc->fs.m_u, 896 .m_ext = rxnfc->fs.m_ext, 897 .ring_cookie = rxnfc->fs.ring_cookie, 898 .location = rxnfc->fs.location, 899 }, 900 .rule_cnt = rxnfc->rule_cnt, 901 }; 902 903 if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc)))) 904 return -EFAULT; 905 906 return 0; 907 } 908 909 static int ethtool_rxnfc_copy_to_user(void __user *useraddr, 910 const struct ethtool_rxnfc *rxnfc, 911 size_t size, const u32 *rule_buf) 912 { 913 int ret; 914 915 if (compat_need_64bit_alignment_fixup()) { 916 ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size, 917 rule_buf); 918 useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs); 919 } else { 920 ret = copy_to_user(useraddr, rxnfc, size); 921 useraddr += offsetof(struct ethtool_rxnfc, rule_locs); 922 } 923 924 if (ret) 925 return -EFAULT; 926 927 if (rule_buf) { 928 if (copy_to_user(useraddr, rule_buf, 929 rxnfc->rule_cnt * sizeof(u32))) 930 return -EFAULT; 931 } 932 933 return 0; 934 } 935 936 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, 937 u32 cmd, void __user *useraddr) 938 { 939 struct ethtool_rxnfc info; 940 size_t info_size = sizeof(info); 941 int rc; 942 943 if (!dev->ethtool_ops->set_rxnfc) 944 return -EOPNOTSUPP; 945 946 /* struct ethtool_rxnfc was originally defined for 947 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 948 * members. User-space might still be using that 949 * definition. */ 950 if (cmd == ETHTOOL_SRXFH) 951 info_size = (offsetof(struct ethtool_rxnfc, data) + 952 sizeof(info.data)); 953 954 if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size)) 955 return -EFAULT; 956 957 rc = dev->ethtool_ops->set_rxnfc(dev, &info); 958 if (rc) 959 return rc; 960 961 if (cmd == ETHTOOL_SRXCLSRLINS && 962 ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL)) 963 return -EFAULT; 964 965 return 0; 966 } 967 968 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, 969 u32 cmd, void __user *useraddr) 970 { 971 struct ethtool_rxnfc info; 972 size_t info_size = sizeof(info); 973 const struct ethtool_ops *ops = dev->ethtool_ops; 974 int ret; 975 void *rule_buf = NULL; 976 977 if (!ops->get_rxnfc) 978 return -EOPNOTSUPP; 979 980 /* struct ethtool_rxnfc was originally defined for 981 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 982 * members. User-space might still be using that 983 * definition. */ 984 if (cmd == ETHTOOL_GRXFH) 985 info_size = (offsetof(struct ethtool_rxnfc, data) + 986 sizeof(info.data)); 987 988 if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size)) 989 return -EFAULT; 990 991 /* If FLOW_RSS was requested then user-space must be using the 992 * new definition, as FLOW_RSS is newer. 993 */ 994 if (cmd == ETHTOOL_GRXFH && info.flow_type & FLOW_RSS) { 995 info_size = sizeof(info); 996 if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size)) 997 return -EFAULT; 998 /* Since malicious users may modify the original data, 999 * we need to check whether FLOW_RSS is still requested. 1000 */ 1001 if (!(info.flow_type & FLOW_RSS)) 1002 return -EINVAL; 1003 } 1004 1005 if (info.cmd != cmd) 1006 return -EINVAL; 1007 1008 if (info.cmd == ETHTOOL_GRXCLSRLALL) { 1009 if (info.rule_cnt > 0) { 1010 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) 1011 rule_buf = kcalloc(info.rule_cnt, sizeof(u32), 1012 GFP_USER); 1013 if (!rule_buf) 1014 return -ENOMEM; 1015 } 1016 } 1017 1018 ret = ops->get_rxnfc(dev, &info, rule_buf); 1019 if (ret < 0) 1020 goto err_out; 1021 1022 ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf); 1023 err_out: 1024 kfree(rule_buf); 1025 1026 return ret; 1027 } 1028 1029 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, 1030 struct ethtool_rxnfc *rx_rings, 1031 u32 size) 1032 { 1033 int i; 1034 1035 if (copy_from_user(indir, useraddr, array_size(size, sizeof(indir[0])))) 1036 return -EFAULT; 1037 1038 /* Validate ring indices */ 1039 for (i = 0; i < size; i++) 1040 if (indir[i] >= rx_rings->data) 1041 return -EINVAL; 1042 1043 return 0; 1044 } 1045 1046 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; 1047 1048 void netdev_rss_key_fill(void *buffer, size_t len) 1049 { 1050 BUG_ON(len > sizeof(netdev_rss_key)); 1051 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); 1052 memcpy(buffer, netdev_rss_key, len); 1053 } 1054 EXPORT_SYMBOL(netdev_rss_key_fill); 1055 1056 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, 1057 void __user *useraddr) 1058 { 1059 u32 user_size, dev_size; 1060 u32 *indir; 1061 int ret; 1062 1063 if (!dev->ethtool_ops->get_rxfh_indir_size || 1064 !dev->ethtool_ops->get_rxfh) 1065 return -EOPNOTSUPP; 1066 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev); 1067 if (dev_size == 0) 1068 return -EOPNOTSUPP; 1069 1070 if (copy_from_user(&user_size, 1071 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1072 sizeof(user_size))) 1073 return -EFAULT; 1074 1075 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), 1076 &dev_size, sizeof(dev_size))) 1077 return -EFAULT; 1078 1079 /* If the user buffer size is 0, this is just a query for the 1080 * device table size. Otherwise, if it's smaller than the 1081 * device table size it's an error. 1082 */ 1083 if (user_size < dev_size) 1084 return user_size == 0 ? 0 : -EINVAL; 1085 1086 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); 1087 if (!indir) 1088 return -ENOMEM; 1089 1090 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL); 1091 if (ret) 1092 goto out; 1093 1094 if (copy_to_user(useraddr + 1095 offsetof(struct ethtool_rxfh_indir, ring_index[0]), 1096 indir, dev_size * sizeof(indir[0]))) 1097 ret = -EFAULT; 1098 1099 out: 1100 kfree(indir); 1101 return ret; 1102 } 1103 1104 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, 1105 void __user *useraddr) 1106 { 1107 struct ethtool_rxnfc rx_rings; 1108 u32 user_size, dev_size, i; 1109 u32 *indir; 1110 const struct ethtool_ops *ops = dev->ethtool_ops; 1111 int ret; 1112 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); 1113 1114 if (!ops->get_rxfh_indir_size || !ops->set_rxfh || 1115 !ops->get_rxnfc) 1116 return -EOPNOTSUPP; 1117 1118 dev_size = ops->get_rxfh_indir_size(dev); 1119 if (dev_size == 0) 1120 return -EOPNOTSUPP; 1121 1122 if (copy_from_user(&user_size, 1123 useraddr + offsetof(struct ethtool_rxfh_indir, size), 1124 sizeof(user_size))) 1125 return -EFAULT; 1126 1127 if (user_size != 0 && user_size != dev_size) 1128 return -EINVAL; 1129 1130 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); 1131 if (!indir) 1132 return -ENOMEM; 1133 1134 rx_rings.cmd = ETHTOOL_GRXRINGS; 1135 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1136 if (ret) 1137 goto out; 1138 1139 if (user_size == 0) { 1140 for (i = 0; i < dev_size; i++) 1141 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1142 } else { 1143 ret = ethtool_copy_validate_indir(indir, 1144 useraddr + ringidx_offset, 1145 &rx_rings, 1146 dev_size); 1147 if (ret) 1148 goto out; 1149 } 1150 1151 ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE); 1152 if (ret) 1153 goto out; 1154 1155 /* indicate whether rxfh was set to default */ 1156 if (user_size == 0) 1157 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1158 else 1159 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1160 1161 out: 1162 kfree(indir); 1163 return ret; 1164 } 1165 1166 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, 1167 void __user *useraddr) 1168 { 1169 int ret; 1170 const struct ethtool_ops *ops = dev->ethtool_ops; 1171 u32 user_indir_size, user_key_size; 1172 u32 dev_indir_size = 0, dev_key_size = 0; 1173 struct ethtool_rxfh rxfh; 1174 u32 total_size; 1175 u32 indir_bytes; 1176 u32 *indir = NULL; 1177 u8 dev_hfunc = 0; 1178 u8 *hkey = NULL; 1179 u8 *rss_config; 1180 1181 if (!ops->get_rxfh) 1182 return -EOPNOTSUPP; 1183 1184 if (ops->get_rxfh_indir_size) 1185 dev_indir_size = ops->get_rxfh_indir_size(dev); 1186 if (ops->get_rxfh_key_size) 1187 dev_key_size = ops->get_rxfh_key_size(dev); 1188 1189 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1190 return -EFAULT; 1191 user_indir_size = rxfh.indir_size; 1192 user_key_size = rxfh.key_size; 1193 1194 /* Check that reserved fields are 0 for now */ 1195 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32) 1196 return -EINVAL; 1197 /* Most drivers don't handle rss_context, check it's 0 as well */ 1198 if (rxfh.rss_context && !ops->get_rxfh_context) 1199 return -EOPNOTSUPP; 1200 1201 rxfh.indir_size = dev_indir_size; 1202 rxfh.key_size = dev_key_size; 1203 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) 1204 return -EFAULT; 1205 1206 if ((user_indir_size && (user_indir_size != dev_indir_size)) || 1207 (user_key_size && (user_key_size != dev_key_size))) 1208 return -EINVAL; 1209 1210 indir_bytes = user_indir_size * sizeof(indir[0]); 1211 total_size = indir_bytes + user_key_size; 1212 rss_config = kzalloc(total_size, GFP_USER); 1213 if (!rss_config) 1214 return -ENOMEM; 1215 1216 if (user_indir_size) 1217 indir = (u32 *)rss_config; 1218 1219 if (user_key_size) 1220 hkey = rss_config + indir_bytes; 1221 1222 if (rxfh.rss_context) 1223 ret = dev->ethtool_ops->get_rxfh_context(dev, indir, hkey, 1224 &dev_hfunc, 1225 rxfh.rss_context); 1226 else 1227 ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc); 1228 if (ret) 1229 goto out; 1230 1231 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), 1232 &dev_hfunc, sizeof(rxfh.hfunc))) { 1233 ret = -EFAULT; 1234 } else if (copy_to_user(useraddr + 1235 offsetof(struct ethtool_rxfh, rss_config[0]), 1236 rss_config, total_size)) { 1237 ret = -EFAULT; 1238 } 1239 out: 1240 kfree(rss_config); 1241 1242 return ret; 1243 } 1244 1245 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, 1246 void __user *useraddr) 1247 { 1248 int ret; 1249 const struct ethtool_ops *ops = dev->ethtool_ops; 1250 struct ethtool_rxnfc rx_rings; 1251 struct ethtool_rxfh rxfh; 1252 u32 dev_indir_size = 0, dev_key_size = 0, i; 1253 u32 *indir = NULL, indir_bytes = 0; 1254 u8 *hkey = NULL; 1255 u8 *rss_config; 1256 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); 1257 bool delete = false; 1258 1259 if (!ops->get_rxnfc || !ops->set_rxfh) 1260 return -EOPNOTSUPP; 1261 1262 if (ops->get_rxfh_indir_size) 1263 dev_indir_size = ops->get_rxfh_indir_size(dev); 1264 if (ops->get_rxfh_key_size) 1265 dev_key_size = ops->get_rxfh_key_size(dev); 1266 1267 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 1268 return -EFAULT; 1269 1270 /* Check that reserved fields are 0 for now */ 1271 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32) 1272 return -EINVAL; 1273 /* Most drivers don't handle rss_context, check it's 0 as well */ 1274 if (rxfh.rss_context && !ops->set_rxfh_context) 1275 return -EOPNOTSUPP; 1276 1277 /* If either indir, hash key or function is valid, proceed further. 1278 * Must request at least one change: indir size, hash key or function. 1279 */ 1280 if ((rxfh.indir_size && 1281 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && 1282 rxfh.indir_size != dev_indir_size) || 1283 (rxfh.key_size && (rxfh.key_size != dev_key_size)) || 1284 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && 1285 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE)) 1286 return -EINVAL; 1287 1288 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1289 indir_bytes = dev_indir_size * sizeof(indir[0]); 1290 1291 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER); 1292 if (!rss_config) 1293 return -ENOMEM; 1294 1295 rx_rings.cmd = ETHTOOL_GRXRINGS; 1296 ret = ops->get_rxnfc(dev, &rx_rings, NULL); 1297 if (ret) 1298 goto out; 1299 1300 /* rxfh.indir_size == 0 means reset the indir table to default (master 1301 * context) or delete the context (other RSS contexts). 1302 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. 1303 */ 1304 if (rxfh.indir_size && 1305 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { 1306 indir = (u32 *)rss_config; 1307 ret = ethtool_copy_validate_indir(indir, 1308 useraddr + rss_cfg_offset, 1309 &rx_rings, 1310 rxfh.indir_size); 1311 if (ret) 1312 goto out; 1313 } else if (rxfh.indir_size == 0) { 1314 if (rxfh.rss_context == 0) { 1315 indir = (u32 *)rss_config; 1316 for (i = 0; i < dev_indir_size; i++) 1317 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 1318 } else { 1319 delete = true; 1320 } 1321 } 1322 1323 if (rxfh.key_size) { 1324 hkey = rss_config + indir_bytes; 1325 if (copy_from_user(hkey, 1326 useraddr + rss_cfg_offset + indir_bytes, 1327 rxfh.key_size)) { 1328 ret = -EFAULT; 1329 goto out; 1330 } 1331 } 1332 1333 if (rxfh.rss_context) 1334 ret = ops->set_rxfh_context(dev, indir, hkey, rxfh.hfunc, 1335 &rxfh.rss_context, delete); 1336 else 1337 ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc); 1338 if (ret) 1339 goto out; 1340 1341 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), 1342 &rxfh.rss_context, sizeof(rxfh.rss_context))) 1343 ret = -EFAULT; 1344 1345 if (!rxfh.rss_context) { 1346 /* indicate whether rxfh was set to default */ 1347 if (rxfh.indir_size == 0) 1348 dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 1349 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 1350 dev->priv_flags |= IFF_RXFH_CONFIGURED; 1351 } 1352 1353 out: 1354 kfree(rss_config); 1355 return ret; 1356 } 1357 1358 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) 1359 { 1360 struct ethtool_regs regs; 1361 const struct ethtool_ops *ops = dev->ethtool_ops; 1362 void *regbuf; 1363 int reglen, ret; 1364 1365 if (!ops->get_regs || !ops->get_regs_len) 1366 return -EOPNOTSUPP; 1367 1368 if (copy_from_user(®s, useraddr, sizeof(regs))) 1369 return -EFAULT; 1370 1371 reglen = ops->get_regs_len(dev); 1372 if (reglen <= 0) 1373 return reglen; 1374 1375 if (regs.len > reglen) 1376 regs.len = reglen; 1377 1378 regbuf = vzalloc(reglen); 1379 if (!regbuf) 1380 return -ENOMEM; 1381 1382 if (regs.len < reglen) 1383 reglen = regs.len; 1384 1385 ops->get_regs(dev, ®s, regbuf); 1386 1387 ret = -EFAULT; 1388 if (copy_to_user(useraddr, ®s, sizeof(regs))) 1389 goto out; 1390 useraddr += offsetof(struct ethtool_regs, data); 1391 if (copy_to_user(useraddr, regbuf, reglen)) 1392 goto out; 1393 ret = 0; 1394 1395 out: 1396 vfree(regbuf); 1397 return ret; 1398 } 1399 1400 static int ethtool_reset(struct net_device *dev, char __user *useraddr) 1401 { 1402 struct ethtool_value reset; 1403 int ret; 1404 1405 if (!dev->ethtool_ops->reset) 1406 return -EOPNOTSUPP; 1407 1408 if (copy_from_user(&reset, useraddr, sizeof(reset))) 1409 return -EFAULT; 1410 1411 ret = dev->ethtool_ops->reset(dev, &reset.data); 1412 if (ret) 1413 return ret; 1414 1415 if (copy_to_user(useraddr, &reset, sizeof(reset))) 1416 return -EFAULT; 1417 return 0; 1418 } 1419 1420 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) 1421 { 1422 struct ethtool_wolinfo wol; 1423 1424 if (!dev->ethtool_ops->get_wol) 1425 return -EOPNOTSUPP; 1426 1427 memset(&wol, 0, sizeof(struct ethtool_wolinfo)); 1428 wol.cmd = ETHTOOL_GWOL; 1429 dev->ethtool_ops->get_wol(dev, &wol); 1430 1431 if (copy_to_user(useraddr, &wol, sizeof(wol))) 1432 return -EFAULT; 1433 return 0; 1434 } 1435 1436 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) 1437 { 1438 struct ethtool_wolinfo wol; 1439 int ret; 1440 1441 if (!dev->ethtool_ops->set_wol) 1442 return -EOPNOTSUPP; 1443 1444 if (copy_from_user(&wol, useraddr, sizeof(wol))) 1445 return -EFAULT; 1446 1447 ret = dev->ethtool_ops->set_wol(dev, &wol); 1448 if (ret) 1449 return ret; 1450 1451 dev->wol_enabled = !!wol.wolopts; 1452 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL); 1453 1454 return 0; 1455 } 1456 1457 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) 1458 { 1459 struct ethtool_eee edata; 1460 int rc; 1461 1462 if (!dev->ethtool_ops->get_eee) 1463 return -EOPNOTSUPP; 1464 1465 memset(&edata, 0, sizeof(struct ethtool_eee)); 1466 edata.cmd = ETHTOOL_GEEE; 1467 rc = dev->ethtool_ops->get_eee(dev, &edata); 1468 1469 if (rc) 1470 return rc; 1471 1472 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1473 return -EFAULT; 1474 1475 return 0; 1476 } 1477 1478 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) 1479 { 1480 struct ethtool_eee edata; 1481 int ret; 1482 1483 if (!dev->ethtool_ops->set_eee) 1484 return -EOPNOTSUPP; 1485 1486 if (copy_from_user(&edata, useraddr, sizeof(edata))) 1487 return -EFAULT; 1488 1489 ret = dev->ethtool_ops->set_eee(dev, &edata); 1490 if (!ret) 1491 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL); 1492 return ret; 1493 } 1494 1495 static int ethtool_nway_reset(struct net_device *dev) 1496 { 1497 if (!dev->ethtool_ops->nway_reset) 1498 return -EOPNOTSUPP; 1499 1500 return dev->ethtool_ops->nway_reset(dev); 1501 } 1502 1503 static int ethtool_get_link(struct net_device *dev, char __user *useraddr) 1504 { 1505 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; 1506 int link = __ethtool_get_link(dev); 1507 1508 if (link < 0) 1509 return link; 1510 1511 edata.data = link; 1512 if (copy_to_user(useraddr, &edata, sizeof(edata))) 1513 return -EFAULT; 1514 return 0; 1515 } 1516 1517 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, 1518 int (*getter)(struct net_device *, 1519 struct ethtool_eeprom *, u8 *), 1520 u32 total_len) 1521 { 1522 struct ethtool_eeprom eeprom; 1523 void __user *userbuf = useraddr + sizeof(eeprom); 1524 u32 bytes_remaining; 1525 u8 *data; 1526 int ret = 0; 1527 1528 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1529 return -EFAULT; 1530 1531 /* Check for wrap and zero */ 1532 if (eeprom.offset + eeprom.len <= eeprom.offset) 1533 return -EINVAL; 1534 1535 /* Check for exceeding total eeprom len */ 1536 if (eeprom.offset + eeprom.len > total_len) 1537 return -EINVAL; 1538 1539 data = kzalloc(PAGE_SIZE, GFP_USER); 1540 if (!data) 1541 return -ENOMEM; 1542 1543 bytes_remaining = eeprom.len; 1544 while (bytes_remaining > 0) { 1545 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1546 1547 ret = getter(dev, &eeprom, data); 1548 if (ret) 1549 break; 1550 if (!eeprom.len) { 1551 ret = -EIO; 1552 break; 1553 } 1554 if (copy_to_user(userbuf, data, eeprom.len)) { 1555 ret = -EFAULT; 1556 break; 1557 } 1558 userbuf += eeprom.len; 1559 eeprom.offset += eeprom.len; 1560 bytes_remaining -= eeprom.len; 1561 } 1562 1563 eeprom.len = userbuf - (useraddr + sizeof(eeprom)); 1564 eeprom.offset -= eeprom.len; 1565 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) 1566 ret = -EFAULT; 1567 1568 kfree(data); 1569 return ret; 1570 } 1571 1572 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) 1573 { 1574 const struct ethtool_ops *ops = dev->ethtool_ops; 1575 1576 if (!ops->get_eeprom || !ops->get_eeprom_len || 1577 !ops->get_eeprom_len(dev)) 1578 return -EOPNOTSUPP; 1579 1580 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, 1581 ops->get_eeprom_len(dev)); 1582 } 1583 1584 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) 1585 { 1586 struct ethtool_eeprom eeprom; 1587 const struct ethtool_ops *ops = dev->ethtool_ops; 1588 void __user *userbuf = useraddr + sizeof(eeprom); 1589 u32 bytes_remaining; 1590 u8 *data; 1591 int ret = 0; 1592 1593 if (!ops->set_eeprom || !ops->get_eeprom_len || 1594 !ops->get_eeprom_len(dev)) 1595 return -EOPNOTSUPP; 1596 1597 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 1598 return -EFAULT; 1599 1600 /* Check for wrap and zero */ 1601 if (eeprom.offset + eeprom.len <= eeprom.offset) 1602 return -EINVAL; 1603 1604 /* Check for exceeding total eeprom len */ 1605 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) 1606 return -EINVAL; 1607 1608 data = kzalloc(PAGE_SIZE, GFP_USER); 1609 if (!data) 1610 return -ENOMEM; 1611 1612 bytes_remaining = eeprom.len; 1613 while (bytes_remaining > 0) { 1614 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 1615 1616 if (copy_from_user(data, userbuf, eeprom.len)) { 1617 ret = -EFAULT; 1618 break; 1619 } 1620 ret = ops->set_eeprom(dev, &eeprom, data); 1621 if (ret) 1622 break; 1623 userbuf += eeprom.len; 1624 eeprom.offset += eeprom.len; 1625 bytes_remaining -= eeprom.len; 1626 } 1627 1628 kfree(data); 1629 return ret; 1630 } 1631 1632 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, 1633 void __user *useraddr) 1634 { 1635 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 1636 struct kernel_ethtool_coalesce kernel_coalesce = {}; 1637 int ret; 1638 1639 if (!dev->ethtool_ops->get_coalesce) 1640 return -EOPNOTSUPP; 1641 1642 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 1643 NULL); 1644 if (ret) 1645 return ret; 1646 1647 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 1648 return -EFAULT; 1649 return 0; 1650 } 1651 1652 static bool 1653 ethtool_set_coalesce_supported(struct net_device *dev, 1654 struct ethtool_coalesce *coalesce) 1655 { 1656 u32 supported_params = dev->ethtool_ops->supported_coalesce_params; 1657 u32 nonzero_params = 0; 1658 1659 if (coalesce->rx_coalesce_usecs) 1660 nonzero_params |= ETHTOOL_COALESCE_RX_USECS; 1661 if (coalesce->rx_max_coalesced_frames) 1662 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; 1663 if (coalesce->rx_coalesce_usecs_irq) 1664 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; 1665 if (coalesce->rx_max_coalesced_frames_irq) 1666 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; 1667 if (coalesce->tx_coalesce_usecs) 1668 nonzero_params |= ETHTOOL_COALESCE_TX_USECS; 1669 if (coalesce->tx_max_coalesced_frames) 1670 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; 1671 if (coalesce->tx_coalesce_usecs_irq) 1672 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; 1673 if (coalesce->tx_max_coalesced_frames_irq) 1674 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; 1675 if (coalesce->stats_block_coalesce_usecs) 1676 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; 1677 if (coalesce->use_adaptive_rx_coalesce) 1678 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; 1679 if (coalesce->use_adaptive_tx_coalesce) 1680 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; 1681 if (coalesce->pkt_rate_low) 1682 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; 1683 if (coalesce->rx_coalesce_usecs_low) 1684 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; 1685 if (coalesce->rx_max_coalesced_frames_low) 1686 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; 1687 if (coalesce->tx_coalesce_usecs_low) 1688 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; 1689 if (coalesce->tx_max_coalesced_frames_low) 1690 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; 1691 if (coalesce->pkt_rate_high) 1692 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; 1693 if (coalesce->rx_coalesce_usecs_high) 1694 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; 1695 if (coalesce->rx_max_coalesced_frames_high) 1696 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; 1697 if (coalesce->tx_coalesce_usecs_high) 1698 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; 1699 if (coalesce->tx_max_coalesced_frames_high) 1700 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; 1701 if (coalesce->rate_sample_interval) 1702 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; 1703 1704 return (supported_params & nonzero_params) == nonzero_params; 1705 } 1706 1707 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, 1708 void __user *useraddr) 1709 { 1710 struct kernel_ethtool_coalesce kernel_coalesce = {}; 1711 struct ethtool_coalesce coalesce; 1712 int ret; 1713 1714 if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce) 1715 return -EOPNOTSUPP; 1716 1717 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 1718 NULL); 1719 if (ret) 1720 return ret; 1721 1722 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) 1723 return -EFAULT; 1724 1725 if (!ethtool_set_coalesce_supported(dev, &coalesce)) 1726 return -EOPNOTSUPP; 1727 1728 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, 1729 NULL); 1730 if (!ret) 1731 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL); 1732 return ret; 1733 } 1734 1735 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) 1736 { 1737 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; 1738 struct kernel_ethtool_ringparam kernel_ringparam = {}; 1739 1740 if (!dev->ethtool_ops->get_ringparam) 1741 return -EOPNOTSUPP; 1742 1743 dev->ethtool_ops->get_ringparam(dev, &ringparam, 1744 &kernel_ringparam, NULL); 1745 1746 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) 1747 return -EFAULT; 1748 return 0; 1749 } 1750 1751 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) 1752 { 1753 struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM }; 1754 struct kernel_ethtool_ringparam kernel_ringparam; 1755 int ret; 1756 1757 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) 1758 return -EOPNOTSUPP; 1759 1760 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) 1761 return -EFAULT; 1762 1763 dev->ethtool_ops->get_ringparam(dev, &max, &kernel_ringparam, NULL); 1764 1765 /* ensure new ring parameters are within the maximums */ 1766 if (ringparam.rx_pending > max.rx_max_pending || 1767 ringparam.rx_mini_pending > max.rx_mini_max_pending || 1768 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || 1769 ringparam.tx_pending > max.tx_max_pending) 1770 return -EINVAL; 1771 1772 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, 1773 &kernel_ringparam, NULL); 1774 if (!ret) 1775 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL); 1776 return ret; 1777 } 1778 1779 static noinline_for_stack int ethtool_get_channels(struct net_device *dev, 1780 void __user *useraddr) 1781 { 1782 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; 1783 1784 if (!dev->ethtool_ops->get_channels) 1785 return -EOPNOTSUPP; 1786 1787 dev->ethtool_ops->get_channels(dev, &channels); 1788 1789 if (copy_to_user(useraddr, &channels, sizeof(channels))) 1790 return -EFAULT; 1791 return 0; 1792 } 1793 1794 static noinline_for_stack int ethtool_set_channels(struct net_device *dev, 1795 void __user *useraddr) 1796 { 1797 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; 1798 u16 from_channel, to_channel; 1799 u64 max_rxnfc_in_use; 1800 u32 max_rxfh_in_use; 1801 unsigned int i; 1802 int ret; 1803 1804 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) 1805 return -EOPNOTSUPP; 1806 1807 if (copy_from_user(&channels, useraddr, sizeof(channels))) 1808 return -EFAULT; 1809 1810 dev->ethtool_ops->get_channels(dev, &curr); 1811 1812 if (channels.rx_count == curr.rx_count && 1813 channels.tx_count == curr.tx_count && 1814 channels.combined_count == curr.combined_count && 1815 channels.other_count == curr.other_count) 1816 return 0; 1817 1818 /* ensure new counts are within the maximums */ 1819 if (channels.rx_count > curr.max_rx || 1820 channels.tx_count > curr.max_tx || 1821 channels.combined_count > curr.max_combined || 1822 channels.other_count > curr.max_other) 1823 return -EINVAL; 1824 1825 /* ensure there is at least one RX and one TX channel */ 1826 if (!channels.combined_count && 1827 (!channels.rx_count || !channels.tx_count)) 1828 return -EINVAL; 1829 1830 /* ensure the new Rx count fits within the configured Rx flow 1831 * indirection table/rxnfc settings */ 1832 if (ethtool_get_max_rxnfc_channel(dev, &max_rxnfc_in_use)) 1833 max_rxnfc_in_use = 0; 1834 if (!netif_is_rxfh_configured(dev) || 1835 ethtool_get_max_rxfh_channel(dev, &max_rxfh_in_use)) 1836 max_rxfh_in_use = 0; 1837 if (channels.combined_count + channels.rx_count <= 1838 max_t(u64, max_rxnfc_in_use, max_rxfh_in_use)) 1839 return -EINVAL; 1840 1841 /* Disabling channels, query zero-copy AF_XDP sockets */ 1842 from_channel = channels.combined_count + 1843 min(channels.rx_count, channels.tx_count); 1844 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); 1845 for (i = from_channel; i < to_channel; i++) 1846 if (xsk_get_pool_from_qid(dev, i)) 1847 return -EINVAL; 1848 1849 ret = dev->ethtool_ops->set_channels(dev, &channels); 1850 if (!ret) 1851 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL); 1852 return ret; 1853 } 1854 1855 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) 1856 { 1857 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; 1858 1859 if (!dev->ethtool_ops->get_pauseparam) 1860 return -EOPNOTSUPP; 1861 1862 dev->ethtool_ops->get_pauseparam(dev, &pauseparam); 1863 1864 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) 1865 return -EFAULT; 1866 return 0; 1867 } 1868 1869 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) 1870 { 1871 struct ethtool_pauseparam pauseparam; 1872 int ret; 1873 1874 if (!dev->ethtool_ops->set_pauseparam) 1875 return -EOPNOTSUPP; 1876 1877 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) 1878 return -EFAULT; 1879 1880 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); 1881 if (!ret) 1882 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL); 1883 return ret; 1884 } 1885 1886 static int ethtool_self_test(struct net_device *dev, char __user *useraddr) 1887 { 1888 struct ethtool_test test; 1889 const struct ethtool_ops *ops = dev->ethtool_ops; 1890 u64 *data; 1891 int ret, test_len; 1892 1893 if (!ops->self_test || !ops->get_sset_count) 1894 return -EOPNOTSUPP; 1895 1896 test_len = ops->get_sset_count(dev, ETH_SS_TEST); 1897 if (test_len < 0) 1898 return test_len; 1899 WARN_ON(test_len == 0); 1900 1901 if (copy_from_user(&test, useraddr, sizeof(test))) 1902 return -EFAULT; 1903 1904 test.len = test_len; 1905 data = kcalloc(test_len, sizeof(u64), GFP_USER); 1906 if (!data) 1907 return -ENOMEM; 1908 1909 netif_testing_on(dev); 1910 ops->self_test(dev, &test, data); 1911 netif_testing_off(dev); 1912 1913 ret = -EFAULT; 1914 if (copy_to_user(useraddr, &test, sizeof(test))) 1915 goto out; 1916 useraddr += sizeof(test); 1917 if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) 1918 goto out; 1919 ret = 0; 1920 1921 out: 1922 kfree(data); 1923 return ret; 1924 } 1925 1926 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) 1927 { 1928 struct ethtool_gstrings gstrings; 1929 u8 *data; 1930 int ret; 1931 1932 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) 1933 return -EFAULT; 1934 1935 ret = __ethtool_get_sset_count(dev, gstrings.string_set); 1936 if (ret < 0) 1937 return ret; 1938 if (ret > S32_MAX / ETH_GSTRING_LEN) 1939 return -ENOMEM; 1940 WARN_ON_ONCE(!ret); 1941 1942 gstrings.len = ret; 1943 1944 if (gstrings.len) { 1945 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); 1946 if (!data) 1947 return -ENOMEM; 1948 1949 __ethtool_get_strings(dev, gstrings.string_set, data); 1950 } else { 1951 data = NULL; 1952 } 1953 1954 ret = -EFAULT; 1955 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) 1956 goto out; 1957 useraddr += sizeof(gstrings); 1958 if (gstrings.len && 1959 copy_to_user(useraddr, data, 1960 array_size(gstrings.len, ETH_GSTRING_LEN))) 1961 goto out; 1962 ret = 0; 1963 1964 out: 1965 vfree(data); 1966 return ret; 1967 } 1968 1969 __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) 1970 { 1971 va_list args; 1972 1973 va_start(args, fmt); 1974 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); 1975 va_end(args); 1976 1977 *data += ETH_GSTRING_LEN; 1978 } 1979 EXPORT_SYMBOL(ethtool_sprintf); 1980 1981 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) 1982 { 1983 struct ethtool_value id; 1984 static bool busy; 1985 const struct ethtool_ops *ops = dev->ethtool_ops; 1986 netdevice_tracker dev_tracker; 1987 int rc; 1988 1989 if (!ops->set_phys_id) 1990 return -EOPNOTSUPP; 1991 1992 if (busy) 1993 return -EBUSY; 1994 1995 if (copy_from_user(&id, useraddr, sizeof(id))) 1996 return -EFAULT; 1997 1998 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); 1999 if (rc < 0) 2000 return rc; 2001 2002 /* Drop the RTNL lock while waiting, but prevent reentry or 2003 * removal of the device. 2004 */ 2005 busy = true; 2006 netdev_hold(dev, &dev_tracker, GFP_KERNEL); 2007 rtnl_unlock(); 2008 2009 if (rc == 0) { 2010 /* Driver will handle this itself */ 2011 schedule_timeout_interruptible( 2012 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); 2013 } else { 2014 /* Driver expects to be called at twice the frequency in rc */ 2015 int n = rc * 2, interval = HZ / n; 2016 u64 count = mul_u32_u32(n, id.data); 2017 u64 i = 0; 2018 2019 do { 2020 rtnl_lock(); 2021 rc = ops->set_phys_id(dev, 2022 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); 2023 rtnl_unlock(); 2024 if (rc) 2025 break; 2026 schedule_timeout_interruptible(interval); 2027 } while (!signal_pending(current) && (!id.data || i < count)); 2028 } 2029 2030 rtnl_lock(); 2031 netdev_put(dev, &dev_tracker); 2032 busy = false; 2033 2034 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); 2035 return rc; 2036 } 2037 2038 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) 2039 { 2040 struct ethtool_stats stats; 2041 const struct ethtool_ops *ops = dev->ethtool_ops; 2042 u64 *data; 2043 int ret, n_stats; 2044 2045 if (!ops->get_ethtool_stats || !ops->get_sset_count) 2046 return -EOPNOTSUPP; 2047 2048 n_stats = ops->get_sset_count(dev, ETH_SS_STATS); 2049 if (n_stats < 0) 2050 return n_stats; 2051 if (n_stats > S32_MAX / sizeof(u64)) 2052 return -ENOMEM; 2053 WARN_ON_ONCE(!n_stats); 2054 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2055 return -EFAULT; 2056 2057 stats.n_stats = n_stats; 2058 2059 if (n_stats) { 2060 data = vzalloc(array_size(n_stats, sizeof(u64))); 2061 if (!data) 2062 return -ENOMEM; 2063 ops->get_ethtool_stats(dev, &stats, data); 2064 } else { 2065 data = NULL; 2066 } 2067 2068 ret = -EFAULT; 2069 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2070 goto out; 2071 useraddr += sizeof(stats); 2072 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) 2073 goto out; 2074 ret = 0; 2075 2076 out: 2077 vfree(data); 2078 return ret; 2079 } 2080 2081 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) 2082 { 2083 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 2084 const struct ethtool_ops *ops = dev->ethtool_ops; 2085 struct phy_device *phydev = dev->phydev; 2086 struct ethtool_stats stats; 2087 u64 *data; 2088 int ret, n_stats; 2089 2090 if (!phydev && (!ops->get_ethtool_phy_stats || !ops->get_sset_count)) 2091 return -EOPNOTSUPP; 2092 2093 if (phydev && !ops->get_ethtool_phy_stats && 2094 phy_ops && phy_ops->get_sset_count) 2095 n_stats = phy_ops->get_sset_count(phydev); 2096 else 2097 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); 2098 if (n_stats < 0) 2099 return n_stats; 2100 if (n_stats > S32_MAX / sizeof(u64)) 2101 return -ENOMEM; 2102 WARN_ON_ONCE(!n_stats); 2103 2104 if (copy_from_user(&stats, useraddr, sizeof(stats))) 2105 return -EFAULT; 2106 2107 stats.n_stats = n_stats; 2108 2109 if (n_stats) { 2110 data = vzalloc(array_size(n_stats, sizeof(u64))); 2111 if (!data) 2112 return -ENOMEM; 2113 2114 if (phydev && !ops->get_ethtool_phy_stats && 2115 phy_ops && phy_ops->get_stats) { 2116 ret = phy_ops->get_stats(phydev, &stats, data); 2117 if (ret < 0) 2118 goto out; 2119 } else { 2120 ops->get_ethtool_phy_stats(dev, &stats, data); 2121 } 2122 } else { 2123 data = NULL; 2124 } 2125 2126 ret = -EFAULT; 2127 if (copy_to_user(useraddr, &stats, sizeof(stats))) 2128 goto out; 2129 useraddr += sizeof(stats); 2130 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) 2131 goto out; 2132 ret = 0; 2133 2134 out: 2135 vfree(data); 2136 return ret; 2137 } 2138 2139 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) 2140 { 2141 struct ethtool_perm_addr epaddr; 2142 2143 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) 2144 return -EFAULT; 2145 2146 if (epaddr.size < dev->addr_len) 2147 return -ETOOSMALL; 2148 epaddr.size = dev->addr_len; 2149 2150 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) 2151 return -EFAULT; 2152 useraddr += sizeof(epaddr); 2153 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) 2154 return -EFAULT; 2155 return 0; 2156 } 2157 2158 static int ethtool_get_value(struct net_device *dev, char __user *useraddr, 2159 u32 cmd, u32 (*actor)(struct net_device *)) 2160 { 2161 struct ethtool_value edata = { .cmd = cmd }; 2162 2163 if (!actor) 2164 return -EOPNOTSUPP; 2165 2166 edata.data = actor(dev); 2167 2168 if (copy_to_user(useraddr, &edata, sizeof(edata))) 2169 return -EFAULT; 2170 return 0; 2171 } 2172 2173 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, 2174 void (*actor)(struct net_device *, u32)) 2175 { 2176 struct ethtool_value edata; 2177 2178 if (!actor) 2179 return -EOPNOTSUPP; 2180 2181 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2182 return -EFAULT; 2183 2184 actor(dev, edata.data); 2185 return 0; 2186 } 2187 2188 static int ethtool_set_value(struct net_device *dev, char __user *useraddr, 2189 int (*actor)(struct net_device *, u32)) 2190 { 2191 struct ethtool_value edata; 2192 2193 if (!actor) 2194 return -EOPNOTSUPP; 2195 2196 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2197 return -EFAULT; 2198 2199 return actor(dev, edata.data); 2200 } 2201 2202 static int 2203 ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) 2204 { 2205 if (!dev->ethtool_ops->flash_device) { 2206 req->devlink = netdev_to_devlink_get(dev); 2207 return 0; 2208 } 2209 2210 return dev->ethtool_ops->flash_device(dev, &req->efl); 2211 } 2212 2213 static int ethtool_set_dump(struct net_device *dev, 2214 void __user *useraddr) 2215 { 2216 struct ethtool_dump dump; 2217 2218 if (!dev->ethtool_ops->set_dump) 2219 return -EOPNOTSUPP; 2220 2221 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2222 return -EFAULT; 2223 2224 return dev->ethtool_ops->set_dump(dev, &dump); 2225 } 2226 2227 static int ethtool_get_dump_flag(struct net_device *dev, 2228 void __user *useraddr) 2229 { 2230 int ret; 2231 struct ethtool_dump dump; 2232 const struct ethtool_ops *ops = dev->ethtool_ops; 2233 2234 if (!ops->get_dump_flag) 2235 return -EOPNOTSUPP; 2236 2237 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2238 return -EFAULT; 2239 2240 ret = ops->get_dump_flag(dev, &dump); 2241 if (ret) 2242 return ret; 2243 2244 if (copy_to_user(useraddr, &dump, sizeof(dump))) 2245 return -EFAULT; 2246 return 0; 2247 } 2248 2249 static int ethtool_get_dump_data(struct net_device *dev, 2250 void __user *useraddr) 2251 { 2252 int ret; 2253 __u32 len; 2254 struct ethtool_dump dump, tmp; 2255 const struct ethtool_ops *ops = dev->ethtool_ops; 2256 void *data = NULL; 2257 2258 if (!ops->get_dump_data || !ops->get_dump_flag) 2259 return -EOPNOTSUPP; 2260 2261 if (copy_from_user(&dump, useraddr, sizeof(dump))) 2262 return -EFAULT; 2263 2264 memset(&tmp, 0, sizeof(tmp)); 2265 tmp.cmd = ETHTOOL_GET_DUMP_FLAG; 2266 ret = ops->get_dump_flag(dev, &tmp); 2267 if (ret) 2268 return ret; 2269 2270 len = min(tmp.len, dump.len); 2271 if (!len) 2272 return -EFAULT; 2273 2274 /* Don't ever let the driver think there's more space available 2275 * than it requested with .get_dump_flag(). 2276 */ 2277 dump.len = len; 2278 2279 /* Always allocate enough space to hold the whole thing so that the 2280 * driver does not need to check the length and bother with partial 2281 * dumping. 2282 */ 2283 data = vzalloc(tmp.len); 2284 if (!data) 2285 return -ENOMEM; 2286 ret = ops->get_dump_data(dev, &dump, data); 2287 if (ret) 2288 goto out; 2289 2290 /* There are two sane possibilities: 2291 * 1. The driver's .get_dump_data() does not touch dump.len. 2292 * 2. Or it may set dump.len to how much it really writes, which 2293 * should be tmp.len (or len if it can do a partial dump). 2294 * In any case respond to userspace with the actual length of data 2295 * it's receiving. 2296 */ 2297 WARN_ON(dump.len != len && dump.len != tmp.len); 2298 dump.len = len; 2299 2300 if (copy_to_user(useraddr, &dump, sizeof(dump))) { 2301 ret = -EFAULT; 2302 goto out; 2303 } 2304 useraddr += offsetof(struct ethtool_dump, data); 2305 if (copy_to_user(useraddr, data, len)) 2306 ret = -EFAULT; 2307 out: 2308 vfree(data); 2309 return ret; 2310 } 2311 2312 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) 2313 { 2314 struct ethtool_ts_info info; 2315 int err; 2316 2317 err = __ethtool_get_ts_info(dev, &info); 2318 if (err) 2319 return err; 2320 2321 if (copy_to_user(useraddr, &info, sizeof(info))) 2322 return -EFAULT; 2323 2324 return 0; 2325 } 2326 2327 int ethtool_get_module_info_call(struct net_device *dev, 2328 struct ethtool_modinfo *modinfo) 2329 { 2330 const struct ethtool_ops *ops = dev->ethtool_ops; 2331 struct phy_device *phydev = dev->phydev; 2332 2333 if (dev->sfp_bus) 2334 return sfp_get_module_info(dev->sfp_bus, modinfo); 2335 2336 if (phydev && phydev->drv && phydev->drv->module_info) 2337 return phydev->drv->module_info(phydev, modinfo); 2338 2339 if (ops->get_module_info) 2340 return ops->get_module_info(dev, modinfo); 2341 2342 return -EOPNOTSUPP; 2343 } 2344 2345 static int ethtool_get_module_info(struct net_device *dev, 2346 void __user *useraddr) 2347 { 2348 int ret; 2349 struct ethtool_modinfo modinfo; 2350 2351 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) 2352 return -EFAULT; 2353 2354 ret = ethtool_get_module_info_call(dev, &modinfo); 2355 if (ret) 2356 return ret; 2357 2358 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) 2359 return -EFAULT; 2360 2361 return 0; 2362 } 2363 2364 int ethtool_get_module_eeprom_call(struct net_device *dev, 2365 struct ethtool_eeprom *ee, u8 *data) 2366 { 2367 const struct ethtool_ops *ops = dev->ethtool_ops; 2368 struct phy_device *phydev = dev->phydev; 2369 2370 if (dev->sfp_bus) 2371 return sfp_get_module_eeprom(dev->sfp_bus, ee, data); 2372 2373 if (phydev && phydev->drv && phydev->drv->module_eeprom) 2374 return phydev->drv->module_eeprom(phydev, ee, data); 2375 2376 if (ops->get_module_eeprom) 2377 return ops->get_module_eeprom(dev, ee, data); 2378 2379 return -EOPNOTSUPP; 2380 } 2381 2382 static int ethtool_get_module_eeprom(struct net_device *dev, 2383 void __user *useraddr) 2384 { 2385 int ret; 2386 struct ethtool_modinfo modinfo; 2387 2388 ret = ethtool_get_module_info_call(dev, &modinfo); 2389 if (ret) 2390 return ret; 2391 2392 return ethtool_get_any_eeprom(dev, useraddr, 2393 ethtool_get_module_eeprom_call, 2394 modinfo.eeprom_len); 2395 } 2396 2397 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) 2398 { 2399 switch (tuna->id) { 2400 case ETHTOOL_RX_COPYBREAK: 2401 case ETHTOOL_TX_COPYBREAK: 2402 case ETHTOOL_TX_COPYBREAK_BUF_SIZE: 2403 if (tuna->len != sizeof(u32) || 2404 tuna->type_id != ETHTOOL_TUNABLE_U32) 2405 return -EINVAL; 2406 break; 2407 case ETHTOOL_PFC_PREVENTION_TOUT: 2408 if (tuna->len != sizeof(u16) || 2409 tuna->type_id != ETHTOOL_TUNABLE_U16) 2410 return -EINVAL; 2411 break; 2412 default: 2413 return -EINVAL; 2414 } 2415 2416 return 0; 2417 } 2418 2419 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) 2420 { 2421 int ret; 2422 struct ethtool_tunable tuna; 2423 const struct ethtool_ops *ops = dev->ethtool_ops; 2424 void *data; 2425 2426 if (!ops->get_tunable) 2427 return -EOPNOTSUPP; 2428 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2429 return -EFAULT; 2430 ret = ethtool_tunable_valid(&tuna); 2431 if (ret) 2432 return ret; 2433 data = kzalloc(tuna.len, GFP_USER); 2434 if (!data) 2435 return -ENOMEM; 2436 ret = ops->get_tunable(dev, &tuna, data); 2437 if (ret) 2438 goto out; 2439 useraddr += sizeof(tuna); 2440 ret = -EFAULT; 2441 if (copy_to_user(useraddr, data, tuna.len)) 2442 goto out; 2443 ret = 0; 2444 2445 out: 2446 kfree(data); 2447 return ret; 2448 } 2449 2450 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) 2451 { 2452 int ret; 2453 struct ethtool_tunable tuna; 2454 const struct ethtool_ops *ops = dev->ethtool_ops; 2455 void *data; 2456 2457 if (!ops->set_tunable) 2458 return -EOPNOTSUPP; 2459 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2460 return -EFAULT; 2461 ret = ethtool_tunable_valid(&tuna); 2462 if (ret) 2463 return ret; 2464 useraddr += sizeof(tuna); 2465 data = memdup_user(useraddr, tuna.len); 2466 if (IS_ERR(data)) 2467 return PTR_ERR(data); 2468 ret = ops->set_tunable(dev, &tuna, data); 2469 2470 kfree(data); 2471 return ret; 2472 } 2473 2474 static noinline_for_stack int 2475 ethtool_get_per_queue_coalesce(struct net_device *dev, 2476 void __user *useraddr, 2477 struct ethtool_per_queue_op *per_queue_opt) 2478 { 2479 u32 bit; 2480 int ret; 2481 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2482 2483 if (!dev->ethtool_ops->get_per_queue_coalesce) 2484 return -EOPNOTSUPP; 2485 2486 useraddr += sizeof(*per_queue_opt); 2487 2488 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, 2489 MAX_NUM_QUEUE); 2490 2491 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2492 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 2493 2494 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); 2495 if (ret != 0) 2496 return ret; 2497 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 2498 return -EFAULT; 2499 useraddr += sizeof(coalesce); 2500 } 2501 2502 return 0; 2503 } 2504 2505 static noinline_for_stack int 2506 ethtool_set_per_queue_coalesce(struct net_device *dev, 2507 void __user *useraddr, 2508 struct ethtool_per_queue_op *per_queue_opt) 2509 { 2510 u32 bit; 2511 int i, ret = 0; 2512 int n_queue; 2513 struct ethtool_coalesce *backup = NULL, *tmp = NULL; 2514 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 2515 2516 if ((!dev->ethtool_ops->set_per_queue_coalesce) || 2517 (!dev->ethtool_ops->get_per_queue_coalesce)) 2518 return -EOPNOTSUPP; 2519 2520 useraddr += sizeof(*per_queue_opt); 2521 2522 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); 2523 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); 2524 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); 2525 if (!backup) 2526 return -ENOMEM; 2527 2528 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 2529 struct ethtool_coalesce coalesce; 2530 2531 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); 2532 if (ret != 0) 2533 goto roll_back; 2534 2535 tmp++; 2536 2537 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { 2538 ret = -EFAULT; 2539 goto roll_back; 2540 } 2541 2542 if (!ethtool_set_coalesce_supported(dev, &coalesce)) { 2543 ret = -EOPNOTSUPP; 2544 goto roll_back; 2545 } 2546 2547 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); 2548 if (ret != 0) 2549 goto roll_back; 2550 2551 useraddr += sizeof(coalesce); 2552 } 2553 2554 roll_back: 2555 if (ret != 0) { 2556 tmp = backup; 2557 for_each_set_bit(i, queue_mask, bit) { 2558 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); 2559 tmp++; 2560 } 2561 } 2562 kfree(backup); 2563 2564 return ret; 2565 } 2566 2567 static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, 2568 void __user *useraddr, u32 sub_cmd) 2569 { 2570 struct ethtool_per_queue_op per_queue_opt; 2571 2572 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) 2573 return -EFAULT; 2574 2575 if (per_queue_opt.sub_command != sub_cmd) 2576 return -EINVAL; 2577 2578 switch (per_queue_opt.sub_command) { 2579 case ETHTOOL_GCOALESCE: 2580 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2581 case ETHTOOL_SCOALESCE: 2582 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); 2583 default: 2584 return -EOPNOTSUPP; 2585 } 2586 } 2587 2588 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) 2589 { 2590 switch (tuna->id) { 2591 case ETHTOOL_PHY_DOWNSHIFT: 2592 case ETHTOOL_PHY_FAST_LINK_DOWN: 2593 if (tuna->len != sizeof(u8) || 2594 tuna->type_id != ETHTOOL_TUNABLE_U8) 2595 return -EINVAL; 2596 break; 2597 case ETHTOOL_PHY_EDPD: 2598 if (tuna->len != sizeof(u16) || 2599 tuna->type_id != ETHTOOL_TUNABLE_U16) 2600 return -EINVAL; 2601 break; 2602 default: 2603 return -EINVAL; 2604 } 2605 2606 return 0; 2607 } 2608 2609 static int get_phy_tunable(struct net_device *dev, void __user *useraddr) 2610 { 2611 struct phy_device *phydev = dev->phydev; 2612 struct ethtool_tunable tuna; 2613 bool phy_drv_tunable; 2614 void *data; 2615 int ret; 2616 2617 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 2618 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) 2619 return -EOPNOTSUPP; 2620 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2621 return -EFAULT; 2622 ret = ethtool_phy_tunable_valid(&tuna); 2623 if (ret) 2624 return ret; 2625 data = kzalloc(tuna.len, GFP_USER); 2626 if (!data) 2627 return -ENOMEM; 2628 if (phy_drv_tunable) { 2629 mutex_lock(&phydev->lock); 2630 ret = phydev->drv->get_tunable(phydev, &tuna, data); 2631 mutex_unlock(&phydev->lock); 2632 } else { 2633 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); 2634 } 2635 if (ret) 2636 goto out; 2637 useraddr += sizeof(tuna); 2638 ret = -EFAULT; 2639 if (copy_to_user(useraddr, data, tuna.len)) 2640 goto out; 2641 ret = 0; 2642 2643 out: 2644 kfree(data); 2645 return ret; 2646 } 2647 2648 static int set_phy_tunable(struct net_device *dev, void __user *useraddr) 2649 { 2650 struct phy_device *phydev = dev->phydev; 2651 struct ethtool_tunable tuna; 2652 bool phy_drv_tunable; 2653 void *data; 2654 int ret; 2655 2656 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 2657 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) 2658 return -EOPNOTSUPP; 2659 if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 2660 return -EFAULT; 2661 ret = ethtool_phy_tunable_valid(&tuna); 2662 if (ret) 2663 return ret; 2664 useraddr += sizeof(tuna); 2665 data = memdup_user(useraddr, tuna.len); 2666 if (IS_ERR(data)) 2667 return PTR_ERR(data); 2668 if (phy_drv_tunable) { 2669 mutex_lock(&phydev->lock); 2670 ret = phydev->drv->set_tunable(phydev, &tuna, data); 2671 mutex_unlock(&phydev->lock); 2672 } else { 2673 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); 2674 } 2675 2676 kfree(data); 2677 return ret; 2678 } 2679 2680 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) 2681 { 2682 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; 2683 int rc; 2684 2685 if (!dev->ethtool_ops->get_fecparam) 2686 return -EOPNOTSUPP; 2687 2688 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); 2689 if (rc) 2690 return rc; 2691 2692 if (WARN_ON_ONCE(fecparam.reserved)) 2693 fecparam.reserved = 0; 2694 2695 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) 2696 return -EFAULT; 2697 return 0; 2698 } 2699 2700 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) 2701 { 2702 struct ethtool_fecparam fecparam; 2703 2704 if (!dev->ethtool_ops->set_fecparam) 2705 return -EOPNOTSUPP; 2706 2707 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) 2708 return -EFAULT; 2709 2710 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) 2711 return -EINVAL; 2712 2713 fecparam.active_fec = 0; 2714 fecparam.reserved = 0; 2715 2716 return dev->ethtool_ops->set_fecparam(dev, &fecparam); 2717 } 2718 2719 /* The main entry point in this file. Called from net/core/dev_ioctl.c */ 2720 2721 static int 2722 __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, 2723 u32 ethcmd, struct ethtool_devlink_compat *devlink_state) 2724 { 2725 struct net_device *dev; 2726 u32 sub_cmd; 2727 int rc; 2728 netdev_features_t old_features; 2729 2730 dev = __dev_get_by_name(net, ifr->ifr_name); 2731 if (!dev) 2732 return -ENODEV; 2733 2734 if (ethcmd == ETHTOOL_PERQUEUE) { 2735 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) 2736 return -EFAULT; 2737 } else { 2738 sub_cmd = ethcmd; 2739 } 2740 /* Allow some commands to be done by anyone */ 2741 switch (sub_cmd) { 2742 case ETHTOOL_GSET: 2743 case ETHTOOL_GDRVINFO: 2744 case ETHTOOL_GMSGLVL: 2745 case ETHTOOL_GLINK: 2746 case ETHTOOL_GCOALESCE: 2747 case ETHTOOL_GRINGPARAM: 2748 case ETHTOOL_GPAUSEPARAM: 2749 case ETHTOOL_GRXCSUM: 2750 case ETHTOOL_GTXCSUM: 2751 case ETHTOOL_GSG: 2752 case ETHTOOL_GSSET_INFO: 2753 case ETHTOOL_GSTRINGS: 2754 case ETHTOOL_GSTATS: 2755 case ETHTOOL_GPHYSTATS: 2756 case ETHTOOL_GTSO: 2757 case ETHTOOL_GPERMADDR: 2758 case ETHTOOL_GUFO: 2759 case ETHTOOL_GGSO: 2760 case ETHTOOL_GGRO: 2761 case ETHTOOL_GFLAGS: 2762 case ETHTOOL_GPFLAGS: 2763 case ETHTOOL_GRXFH: 2764 case ETHTOOL_GRXRINGS: 2765 case ETHTOOL_GRXCLSRLCNT: 2766 case ETHTOOL_GRXCLSRULE: 2767 case ETHTOOL_GRXCLSRLALL: 2768 case ETHTOOL_GRXFHINDIR: 2769 case ETHTOOL_GRSSH: 2770 case ETHTOOL_GFEATURES: 2771 case ETHTOOL_GCHANNELS: 2772 case ETHTOOL_GET_TS_INFO: 2773 case ETHTOOL_GEEE: 2774 case ETHTOOL_GTUNABLE: 2775 case ETHTOOL_PHY_GTUNABLE: 2776 case ETHTOOL_GLINKSETTINGS: 2777 case ETHTOOL_GFECPARAM: 2778 break; 2779 default: 2780 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 2781 return -EPERM; 2782 } 2783 2784 if (dev->dev.parent) 2785 pm_runtime_get_sync(dev->dev.parent); 2786 2787 if (!netif_device_present(dev)) { 2788 rc = -ENODEV; 2789 goto out; 2790 } 2791 2792 if (dev->ethtool_ops->begin) { 2793 rc = dev->ethtool_ops->begin(dev); 2794 if (rc < 0) 2795 goto out; 2796 } 2797 old_features = dev->features; 2798 2799 switch (ethcmd) { 2800 case ETHTOOL_GSET: 2801 rc = ethtool_get_settings(dev, useraddr); 2802 break; 2803 case ETHTOOL_SSET: 2804 rc = ethtool_set_settings(dev, useraddr); 2805 break; 2806 case ETHTOOL_GDRVINFO: 2807 rc = ethtool_get_drvinfo(dev, devlink_state); 2808 break; 2809 case ETHTOOL_GREGS: 2810 rc = ethtool_get_regs(dev, useraddr); 2811 break; 2812 case ETHTOOL_GWOL: 2813 rc = ethtool_get_wol(dev, useraddr); 2814 break; 2815 case ETHTOOL_SWOL: 2816 rc = ethtool_set_wol(dev, useraddr); 2817 break; 2818 case ETHTOOL_GMSGLVL: 2819 rc = ethtool_get_value(dev, useraddr, ethcmd, 2820 dev->ethtool_ops->get_msglevel); 2821 break; 2822 case ETHTOOL_SMSGLVL: 2823 rc = ethtool_set_value_void(dev, useraddr, 2824 dev->ethtool_ops->set_msglevel); 2825 if (!rc) 2826 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL); 2827 break; 2828 case ETHTOOL_GEEE: 2829 rc = ethtool_get_eee(dev, useraddr); 2830 break; 2831 case ETHTOOL_SEEE: 2832 rc = ethtool_set_eee(dev, useraddr); 2833 break; 2834 case ETHTOOL_NWAY_RST: 2835 rc = ethtool_nway_reset(dev); 2836 break; 2837 case ETHTOOL_GLINK: 2838 rc = ethtool_get_link(dev, useraddr); 2839 break; 2840 case ETHTOOL_GEEPROM: 2841 rc = ethtool_get_eeprom(dev, useraddr); 2842 break; 2843 case ETHTOOL_SEEPROM: 2844 rc = ethtool_set_eeprom(dev, useraddr); 2845 break; 2846 case ETHTOOL_GCOALESCE: 2847 rc = ethtool_get_coalesce(dev, useraddr); 2848 break; 2849 case ETHTOOL_SCOALESCE: 2850 rc = ethtool_set_coalesce(dev, useraddr); 2851 break; 2852 case ETHTOOL_GRINGPARAM: 2853 rc = ethtool_get_ringparam(dev, useraddr); 2854 break; 2855 case ETHTOOL_SRINGPARAM: 2856 rc = ethtool_set_ringparam(dev, useraddr); 2857 break; 2858 case ETHTOOL_GPAUSEPARAM: 2859 rc = ethtool_get_pauseparam(dev, useraddr); 2860 break; 2861 case ETHTOOL_SPAUSEPARAM: 2862 rc = ethtool_set_pauseparam(dev, useraddr); 2863 break; 2864 case ETHTOOL_TEST: 2865 rc = ethtool_self_test(dev, useraddr); 2866 break; 2867 case ETHTOOL_GSTRINGS: 2868 rc = ethtool_get_strings(dev, useraddr); 2869 break; 2870 case ETHTOOL_PHYS_ID: 2871 rc = ethtool_phys_id(dev, useraddr); 2872 break; 2873 case ETHTOOL_GSTATS: 2874 rc = ethtool_get_stats(dev, useraddr); 2875 break; 2876 case ETHTOOL_GPERMADDR: 2877 rc = ethtool_get_perm_addr(dev, useraddr); 2878 break; 2879 case ETHTOOL_GFLAGS: 2880 rc = ethtool_get_value(dev, useraddr, ethcmd, 2881 __ethtool_get_flags); 2882 break; 2883 case ETHTOOL_SFLAGS: 2884 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); 2885 break; 2886 case ETHTOOL_GPFLAGS: 2887 rc = ethtool_get_value(dev, useraddr, ethcmd, 2888 dev->ethtool_ops->get_priv_flags); 2889 if (!rc) 2890 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL); 2891 break; 2892 case ETHTOOL_SPFLAGS: 2893 rc = ethtool_set_value(dev, useraddr, 2894 dev->ethtool_ops->set_priv_flags); 2895 break; 2896 case ETHTOOL_GRXFH: 2897 case ETHTOOL_GRXRINGS: 2898 case ETHTOOL_GRXCLSRLCNT: 2899 case ETHTOOL_GRXCLSRULE: 2900 case ETHTOOL_GRXCLSRLALL: 2901 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); 2902 break; 2903 case ETHTOOL_SRXFH: 2904 case ETHTOOL_SRXCLSRLDEL: 2905 case ETHTOOL_SRXCLSRLINS: 2906 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); 2907 break; 2908 case ETHTOOL_FLASHDEV: 2909 rc = ethtool_flash_device(dev, devlink_state); 2910 break; 2911 case ETHTOOL_RESET: 2912 rc = ethtool_reset(dev, useraddr); 2913 break; 2914 case ETHTOOL_GSSET_INFO: 2915 rc = ethtool_get_sset_info(dev, useraddr); 2916 break; 2917 case ETHTOOL_GRXFHINDIR: 2918 rc = ethtool_get_rxfh_indir(dev, useraddr); 2919 break; 2920 case ETHTOOL_SRXFHINDIR: 2921 rc = ethtool_set_rxfh_indir(dev, useraddr); 2922 break; 2923 case ETHTOOL_GRSSH: 2924 rc = ethtool_get_rxfh(dev, useraddr); 2925 break; 2926 case ETHTOOL_SRSSH: 2927 rc = ethtool_set_rxfh(dev, useraddr); 2928 break; 2929 case ETHTOOL_GFEATURES: 2930 rc = ethtool_get_features(dev, useraddr); 2931 break; 2932 case ETHTOOL_SFEATURES: 2933 rc = ethtool_set_features(dev, useraddr); 2934 break; 2935 case ETHTOOL_GTXCSUM: 2936 case ETHTOOL_GRXCSUM: 2937 case ETHTOOL_GSG: 2938 case ETHTOOL_GTSO: 2939 case ETHTOOL_GGSO: 2940 case ETHTOOL_GGRO: 2941 rc = ethtool_get_one_feature(dev, useraddr, ethcmd); 2942 break; 2943 case ETHTOOL_STXCSUM: 2944 case ETHTOOL_SRXCSUM: 2945 case ETHTOOL_SSG: 2946 case ETHTOOL_STSO: 2947 case ETHTOOL_SGSO: 2948 case ETHTOOL_SGRO: 2949 rc = ethtool_set_one_feature(dev, useraddr, ethcmd); 2950 break; 2951 case ETHTOOL_GCHANNELS: 2952 rc = ethtool_get_channels(dev, useraddr); 2953 break; 2954 case ETHTOOL_SCHANNELS: 2955 rc = ethtool_set_channels(dev, useraddr); 2956 break; 2957 case ETHTOOL_SET_DUMP: 2958 rc = ethtool_set_dump(dev, useraddr); 2959 break; 2960 case ETHTOOL_GET_DUMP_FLAG: 2961 rc = ethtool_get_dump_flag(dev, useraddr); 2962 break; 2963 case ETHTOOL_GET_DUMP_DATA: 2964 rc = ethtool_get_dump_data(dev, useraddr); 2965 break; 2966 case ETHTOOL_GET_TS_INFO: 2967 rc = ethtool_get_ts_info(dev, useraddr); 2968 break; 2969 case ETHTOOL_GMODULEINFO: 2970 rc = ethtool_get_module_info(dev, useraddr); 2971 break; 2972 case ETHTOOL_GMODULEEEPROM: 2973 rc = ethtool_get_module_eeprom(dev, useraddr); 2974 break; 2975 case ETHTOOL_GTUNABLE: 2976 rc = ethtool_get_tunable(dev, useraddr); 2977 break; 2978 case ETHTOOL_STUNABLE: 2979 rc = ethtool_set_tunable(dev, useraddr); 2980 break; 2981 case ETHTOOL_GPHYSTATS: 2982 rc = ethtool_get_phy_stats(dev, useraddr); 2983 break; 2984 case ETHTOOL_PERQUEUE: 2985 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); 2986 break; 2987 case ETHTOOL_GLINKSETTINGS: 2988 rc = ethtool_get_link_ksettings(dev, useraddr); 2989 break; 2990 case ETHTOOL_SLINKSETTINGS: 2991 rc = ethtool_set_link_ksettings(dev, useraddr); 2992 break; 2993 case ETHTOOL_PHY_GTUNABLE: 2994 rc = get_phy_tunable(dev, useraddr); 2995 break; 2996 case ETHTOOL_PHY_STUNABLE: 2997 rc = set_phy_tunable(dev, useraddr); 2998 break; 2999 case ETHTOOL_GFECPARAM: 3000 rc = ethtool_get_fecparam(dev, useraddr); 3001 break; 3002 case ETHTOOL_SFECPARAM: 3003 rc = ethtool_set_fecparam(dev, useraddr); 3004 break; 3005 default: 3006 rc = -EOPNOTSUPP; 3007 } 3008 3009 if (dev->ethtool_ops->complete) 3010 dev->ethtool_ops->complete(dev); 3011 3012 if (old_features != dev->features) 3013 netdev_features_change(dev); 3014 out: 3015 if (dev->dev.parent) 3016 pm_runtime_put(dev->dev.parent); 3017 3018 return rc; 3019 } 3020 3021 int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) 3022 { 3023 struct ethtool_devlink_compat *state; 3024 u32 ethcmd; 3025 int rc; 3026 3027 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) 3028 return -EFAULT; 3029 3030 state = kzalloc(sizeof(*state), GFP_KERNEL); 3031 if (!state) 3032 return -ENOMEM; 3033 3034 switch (ethcmd) { 3035 case ETHTOOL_FLASHDEV: 3036 if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { 3037 rc = -EFAULT; 3038 goto exit_free; 3039 } 3040 state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; 3041 break; 3042 } 3043 3044 rtnl_lock(); 3045 rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); 3046 rtnl_unlock(); 3047 if (rc) 3048 goto exit_free; 3049 3050 switch (ethcmd) { 3051 case ETHTOOL_FLASHDEV: 3052 if (state->devlink) 3053 rc = devlink_compat_flash_update(state->devlink, 3054 state->efl.data); 3055 break; 3056 case ETHTOOL_GDRVINFO: 3057 if (state->devlink) 3058 devlink_compat_running_version(state->devlink, 3059 state->info.fw_version, 3060 sizeof(state->info.fw_version)); 3061 if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { 3062 rc = -EFAULT; 3063 goto exit_free; 3064 } 3065 break; 3066 } 3067 3068 exit_free: 3069 if (state->devlink) 3070 devlink_put(state->devlink); 3071 kfree(state); 3072 return rc; 3073 } 3074 3075 struct ethtool_rx_flow_key { 3076 struct flow_dissector_key_basic basic; 3077 union { 3078 struct flow_dissector_key_ipv4_addrs ipv4; 3079 struct flow_dissector_key_ipv6_addrs ipv6; 3080 }; 3081 struct flow_dissector_key_ports tp; 3082 struct flow_dissector_key_ip ip; 3083 struct flow_dissector_key_vlan vlan; 3084 struct flow_dissector_key_eth_addrs eth_addrs; 3085 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ 3086 3087 struct ethtool_rx_flow_match { 3088 struct flow_dissector dissector; 3089 struct ethtool_rx_flow_key key; 3090 struct ethtool_rx_flow_key mask; 3091 }; 3092 3093 struct ethtool_rx_flow_rule * 3094 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) 3095 { 3096 const struct ethtool_rx_flow_spec *fs = input->fs; 3097 static struct in6_addr zero_addr = {}; 3098 struct ethtool_rx_flow_match *match; 3099 struct ethtool_rx_flow_rule *flow; 3100 struct flow_action_entry *act; 3101 3102 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + 3103 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); 3104 if (!flow) 3105 return ERR_PTR(-ENOMEM); 3106 3107 /* ethtool_rx supports only one single action per rule. */ 3108 flow->rule = flow_rule_alloc(1); 3109 if (!flow->rule) { 3110 kfree(flow); 3111 return ERR_PTR(-ENOMEM); 3112 } 3113 3114 match = (struct ethtool_rx_flow_match *)flow->priv; 3115 flow->rule->match.dissector = &match->dissector; 3116 flow->rule->match.mask = &match->mask; 3117 flow->rule->match.key = &match->key; 3118 3119 match->mask.basic.n_proto = htons(0xffff); 3120 3121 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3122 case ETHER_FLOW: { 3123 const struct ethhdr *ether_spec, *ether_m_spec; 3124 3125 ether_spec = &fs->h_u.ether_spec; 3126 ether_m_spec = &fs->m_u.ether_spec; 3127 3128 if (!is_zero_ether_addr(ether_m_spec->h_source)) { 3129 ether_addr_copy(match->key.eth_addrs.src, 3130 ether_spec->h_source); 3131 ether_addr_copy(match->mask.eth_addrs.src, 3132 ether_m_spec->h_source); 3133 } 3134 if (!is_zero_ether_addr(ether_m_spec->h_dest)) { 3135 ether_addr_copy(match->key.eth_addrs.dst, 3136 ether_spec->h_dest); 3137 ether_addr_copy(match->mask.eth_addrs.dst, 3138 ether_m_spec->h_dest); 3139 } 3140 if (ether_m_spec->h_proto) { 3141 match->key.basic.n_proto = ether_spec->h_proto; 3142 match->mask.basic.n_proto = ether_m_spec->h_proto; 3143 } 3144 } 3145 break; 3146 case TCP_V4_FLOW: 3147 case UDP_V4_FLOW: { 3148 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; 3149 3150 match->key.basic.n_proto = htons(ETH_P_IP); 3151 3152 v4_spec = &fs->h_u.tcp_ip4_spec; 3153 v4_m_spec = &fs->m_u.tcp_ip4_spec; 3154 3155 if (v4_m_spec->ip4src) { 3156 match->key.ipv4.src = v4_spec->ip4src; 3157 match->mask.ipv4.src = v4_m_spec->ip4src; 3158 } 3159 if (v4_m_spec->ip4dst) { 3160 match->key.ipv4.dst = v4_spec->ip4dst; 3161 match->mask.ipv4.dst = v4_m_spec->ip4dst; 3162 } 3163 if (v4_m_spec->ip4src || 3164 v4_m_spec->ip4dst) { 3165 match->dissector.used_keys |= 3166 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS); 3167 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = 3168 offsetof(struct ethtool_rx_flow_key, ipv4); 3169 } 3170 if (v4_m_spec->psrc) { 3171 match->key.tp.src = v4_spec->psrc; 3172 match->mask.tp.src = v4_m_spec->psrc; 3173 } 3174 if (v4_m_spec->pdst) { 3175 match->key.tp.dst = v4_spec->pdst; 3176 match->mask.tp.dst = v4_m_spec->pdst; 3177 } 3178 if (v4_m_spec->psrc || 3179 v4_m_spec->pdst) { 3180 match->dissector.used_keys |= 3181 BIT(FLOW_DISSECTOR_KEY_PORTS); 3182 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3183 offsetof(struct ethtool_rx_flow_key, tp); 3184 } 3185 if (v4_m_spec->tos) { 3186 match->key.ip.tos = v4_spec->tos; 3187 match->mask.ip.tos = v4_m_spec->tos; 3188 match->dissector.used_keys |= 3189 BIT(FLOW_DISSECTOR_KEY_IP); 3190 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3191 offsetof(struct ethtool_rx_flow_key, ip); 3192 } 3193 } 3194 break; 3195 case TCP_V6_FLOW: 3196 case UDP_V6_FLOW: { 3197 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; 3198 3199 match->key.basic.n_proto = htons(ETH_P_IPV6); 3200 3201 v6_spec = &fs->h_u.tcp_ip6_spec; 3202 v6_m_spec = &fs->m_u.tcp_ip6_spec; 3203 if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr))) { 3204 memcpy(&match->key.ipv6.src, v6_spec->ip6src, 3205 sizeof(match->key.ipv6.src)); 3206 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, 3207 sizeof(match->mask.ipv6.src)); 3208 } 3209 if (memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) { 3210 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, 3211 sizeof(match->key.ipv6.dst)); 3212 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, 3213 sizeof(match->mask.ipv6.dst)); 3214 } 3215 if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr)) || 3216 memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) { 3217 match->dissector.used_keys |= 3218 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS); 3219 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = 3220 offsetof(struct ethtool_rx_flow_key, ipv6); 3221 } 3222 if (v6_m_spec->psrc) { 3223 match->key.tp.src = v6_spec->psrc; 3224 match->mask.tp.src = v6_m_spec->psrc; 3225 } 3226 if (v6_m_spec->pdst) { 3227 match->key.tp.dst = v6_spec->pdst; 3228 match->mask.tp.dst = v6_m_spec->pdst; 3229 } 3230 if (v6_m_spec->psrc || 3231 v6_m_spec->pdst) { 3232 match->dissector.used_keys |= 3233 BIT(FLOW_DISSECTOR_KEY_PORTS); 3234 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 3235 offsetof(struct ethtool_rx_flow_key, tp); 3236 } 3237 if (v6_m_spec->tclass) { 3238 match->key.ip.tos = v6_spec->tclass; 3239 match->mask.ip.tos = v6_m_spec->tclass; 3240 match->dissector.used_keys |= 3241 BIT(FLOW_DISSECTOR_KEY_IP); 3242 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 3243 offsetof(struct ethtool_rx_flow_key, ip); 3244 } 3245 } 3246 break; 3247 default: 3248 ethtool_rx_flow_rule_destroy(flow); 3249 return ERR_PTR(-EINVAL); 3250 } 3251 3252 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 3253 case TCP_V4_FLOW: 3254 case TCP_V6_FLOW: 3255 match->key.basic.ip_proto = IPPROTO_TCP; 3256 match->mask.basic.ip_proto = 0xff; 3257 break; 3258 case UDP_V4_FLOW: 3259 case UDP_V6_FLOW: 3260 match->key.basic.ip_proto = IPPROTO_UDP; 3261 match->mask.basic.ip_proto = 0xff; 3262 break; 3263 } 3264 3265 match->dissector.used_keys |= BIT(FLOW_DISSECTOR_KEY_BASIC); 3266 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = 3267 offsetof(struct ethtool_rx_flow_key, basic); 3268 3269 if (fs->flow_type & FLOW_EXT) { 3270 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3271 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3272 3273 if (ext_m_spec->vlan_etype) { 3274 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; 3275 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; 3276 } 3277 3278 if (ext_m_spec->vlan_tci) { 3279 match->key.vlan.vlan_id = 3280 ntohs(ext_h_spec->vlan_tci) & 0x0fff; 3281 match->mask.vlan.vlan_id = 3282 ntohs(ext_m_spec->vlan_tci) & 0x0fff; 3283 3284 match->key.vlan.vlan_dei = 3285 !!(ext_h_spec->vlan_tci & htons(0x1000)); 3286 match->mask.vlan.vlan_dei = 3287 !!(ext_m_spec->vlan_tci & htons(0x1000)); 3288 3289 match->key.vlan.vlan_priority = 3290 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; 3291 match->mask.vlan.vlan_priority = 3292 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; 3293 } 3294 3295 if (ext_m_spec->vlan_etype || 3296 ext_m_spec->vlan_tci) { 3297 match->dissector.used_keys |= 3298 BIT(FLOW_DISSECTOR_KEY_VLAN); 3299 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = 3300 offsetof(struct ethtool_rx_flow_key, vlan); 3301 } 3302 } 3303 if (fs->flow_type & FLOW_MAC_EXT) { 3304 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 3305 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 3306 3307 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, 3308 ETH_ALEN); 3309 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, 3310 ETH_ALEN); 3311 3312 match->dissector.used_keys |= 3313 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS); 3314 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = 3315 offsetof(struct ethtool_rx_flow_key, eth_addrs); 3316 } 3317 3318 act = &flow->rule->action.entries[0]; 3319 switch (fs->ring_cookie) { 3320 case RX_CLS_FLOW_DISC: 3321 act->id = FLOW_ACTION_DROP; 3322 break; 3323 case RX_CLS_FLOW_WAKE: 3324 act->id = FLOW_ACTION_WAKE; 3325 break; 3326 default: 3327 act->id = FLOW_ACTION_QUEUE; 3328 if (fs->flow_type & FLOW_RSS) 3329 act->queue.ctx = input->rss_ctx; 3330 3331 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); 3332 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); 3333 break; 3334 } 3335 3336 return flow; 3337 } 3338 EXPORT_SYMBOL(ethtool_rx_flow_rule_create); 3339 3340 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) 3341 { 3342 kfree(flow->rule); 3343 kfree(flow); 3344 } 3345 EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); 3346