net/core/ethtool.c

   1 /*
   2  * net/core/ethtool.c - Ethtool ioctl handler
   3  * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx>
   4  *
   5  * This file is where we call all the ethtool_ops commands to get
   6  * the information ethtool needs.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  */
  13
  14 #include <linux/module.h>
  15 #include <linux/types.h>
  16 #include <linux/capability.h>
  17 #include <linux/errno.h>
  18 #include <linux/ethtool.h>
  19 #include <linux/netdevice.h>
  20 #include <linux/bitops.h>
  21 #include <linux/uaccess.h>
  22 #include <linux/vmalloc.h>
  23 #include <linux/slab.h>
  24
  25 /*
  26  * Some useful ethtool_ops methods that're device independent.
  27  * If we find that all drivers want to do the same thing here,
  28  * we can turn these into dev_() function calls.
  29  */
  30
  31 u32 ethtool_op_get_link(struct net_device *dev)
  32 {
  33         return netif_carrier_ok(dev) ? 1 : 0;
  34 }
  35 EXPORT_SYMBOL(ethtool_op_get_link);
  36
  37 u32 ethtool_op_get_tx_csum(struct net_device *dev)
  38 {
  39         return (dev->features & NETIF_F_ALL_CSUM) != 0;
  40 }
  41 EXPORT_SYMBOL(ethtool_op_get_tx_csum);
  42
  43 int ethtool_op_set_tx_csum(struct net_device *dev, u32 data)
  44 {
  45         if (data)
  46                 dev->features |= NETIF_F_IP_CSUM;
  47         else
  48                 dev->features &= ~NETIF_F_IP_CSUM;
  49
  50         return 0;
  51 }
  52 EXPORT_SYMBOL(ethtool_op_set_tx_csum);
  53
  54 int ethtool_op_set_tx_hw_csum(struct net_device *dev, u32 data)
  55 {
  56         if (data)
  57                 dev->features |= NETIF_F_HW_CSUM;
  58         else
  59                 dev->features &= ~NETIF_F_HW_CSUM;
  60
  61         return 0;
  62 }
  63 EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum);
  64
  65 int ethtool_op_set_tx_ipv6_csum(struct net_device *dev, u32 data)
  66 {
  67         if (data)
  68                 dev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
  69         else
  70                 dev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
  71
  72         return 0;
  73 }
  74 EXPORT_SYMBOL(ethtool_op_set_tx_ipv6_csum);
  75
  76 u32 ethtool_op_get_sg(struct net_device *dev)
  77 {
  78         return (dev->features & NETIF_F_SG) != 0;
  79 }
  80 EXPORT_SYMBOL(ethtool_op_get_sg);
  81
  82 int ethtool_op_set_sg(struct net_device *dev, u32 data)
  83 {
  84         if (data)
  85                 dev->features |= NETIF_F_SG;
  86         else
  87                 dev->features &= ~NETIF_F_SG;
  88
  89         return 0;
  90 }
  91 EXPORT_SYMBOL(ethtool_op_set_sg);
  92
  93 u32 ethtool_op_get_tso(struct net_device *dev)
  94 {
  95         return (dev->features & NETIF_F_TSO) != 0;
  96 }
  97 EXPORT_SYMBOL(ethtool_op_get_tso);
  98
  99 int ethtool_op_set_tso(struct net_device *dev, u32 data)
 100 {
 101         if (data)
 102                 dev->features |= NETIF_F_TSO;
 103         else
 104                 dev->features &= ~NETIF_F_TSO;
 105
 106         return 0;
 107 }
 108 EXPORT_SYMBOL(ethtool_op_set_tso);
 109
 110 u32 ethtool_op_get_ufo(struct net_device *dev)
 111 {
 112         return (dev->features & NETIF_F_UFO) != 0;
 113 }
 114 EXPORT_SYMBOL(ethtool_op_get_ufo);
 115
 116 int ethtool_op_set_ufo(struct net_device *dev, u32 data)
 117 {
 118         if (data)
 119                 dev->features |= NETIF_F_UFO;
 120         else
 121                 dev->features &= ~NETIF_F_UFO;
 122         return 0;
 123 }
 124 EXPORT_SYMBOL(ethtool_op_set_ufo);
 125
 126 /* the following list of flags are the same as their associated
 127  * NETIF_F_xxx values in include/linux/netdevice.h
 128  */
 129 static const u32 flags_dup_features =
 130         (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | ETH_FLAG_NTUPLE |
 131          ETH_FLAG_RXHASH);
 132
 133 u32 ethtool_op_get_flags(struct net_device *dev)
 134 {
 135         /* in the future, this function will probably contain additional
 136          * handling for flags which are not so easily handled
 137          * by a simple masking operation
 138          */
 139
 140         return dev->features & flags_dup_features;
 141 }
 142 EXPORT_SYMBOL(ethtool_op_get_flags);
 143
 144 int ethtool_op_set_flags(struct net_device *dev, u32 data, u32 supported)
 145 {
 146         if (data & ~supported)
 147                 return -EINVAL;
 148
 149         dev->features = ((dev->features & ~flags_dup_features) |
 150                          (data & flags_dup_features));
 151         return 0;
 152 }
 153 EXPORT_SYMBOL(ethtool_op_set_flags);
 154
 155 void ethtool_ntuple_flush(struct net_device *dev)
 156 {
 157         struct ethtool_rx_ntuple_flow_spec_container *fsc, *f;
 158
 159         list_for_each_entry_safe(fsc, f, &dev->ethtool_ntuple_list.list, list) {
 160                 list_del(&fsc->list);
 161                 kfree(fsc);
 162         }
 163         dev->ethtool_ntuple_list.count = 0;
 164 }
 165 EXPORT_SYMBOL(ethtool_ntuple_flush);
 166
 167 /* Handlers for each ethtool command */
 168
 169 #define ETHTOOL_DEV_FEATURE_WORDS       1
 170
 171 static void ethtool_get_features_compat(struct net_device *dev,
 172         struct ethtool_get_features_block *features)
 173 {
 174         if (!dev->ethtool_ops)
 175                 return;
 176
 177         /* getting RX checksum */
 178         if (dev->ethtool_ops->get_rx_csum)
 179                 if (dev->ethtool_ops->get_rx_csum(dev))
 180                         features[0].active |= NETIF_F_RXCSUM;
 181
 182         /* mark legacy-changeable features */
 183         if (dev->ethtool_ops->set_sg)
 184                 features[0].available |= NETIF_F_SG;
 185         if (dev->ethtool_ops->set_tx_csum)
 186                 features[0].available |= NETIF_F_ALL_CSUM;
 187         if (dev->ethtool_ops->set_tso)
 188                 features[0].available |= NETIF_F_ALL_TSO;
 189         if (dev->ethtool_ops->set_rx_csum)
 190                 features[0].available |= NETIF_F_RXCSUM;
 191         if (dev->ethtool_ops->set_flags)
 192                 features[0].available |= flags_dup_features;
 193 }
 194
 195 static int ethtool_set_feature_compat(struct net_device *dev,
 196         int (*legacy_set)(struct net_device *, u32),
 197         struct ethtool_set_features_block *features, u32 mask)
 198 {
 199         u32 do_set;
 200
 201         if (!legacy_set)
 202                 return 0;
 203
 204         if (!(features[0].valid & mask))
 205                 return 0;
 206
 207         features[0].valid &= ~mask;
 208
 209         do_set = !!(features[0].requested & mask);
 210
 211         if (legacy_set(dev, do_set) < 0)
 212                 netdev_info(dev,
 213                         "Legacy feature change (%s) failed for 0x%08x\n",
 214                         do_set ? "set" : "clear", mask);
 215
 216         return 1;
 217 }
 218
 219 static int ethtool_set_features_compat(struct net_device *dev,
 220         struct ethtool_set_features_block *features)
 221 {
 222         int compat;
 223
 224         if (!dev->ethtool_ops)
 225                 return 0;
 226
 227         compat  = ethtool_set_feature_compat(dev, dev->ethtool_ops->set_sg,
 228                 features, NETIF_F_SG);
 229         compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_tx_csum,
 230                 features, NETIF_F_ALL_CSUM);
 231         compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_tso,
 232                 features, NETIF_F_ALL_TSO);
 233         compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_rx_csum,
 234                 features, NETIF_F_RXCSUM);
 235         compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_flags,
 236                 features, flags_dup_features);
 237
 238         return compat;
 239 }
 240
 241 static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
 242 {
 243         struct ethtool_gfeatures cmd = {
 244                 .cmd = ETHTOOL_GFEATURES,
 245                 .size = ETHTOOL_DEV_FEATURE_WORDS,
 246         };
 247         struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS] = {
 248                 {
 249                         .available = dev->hw_features,
 250                         .requested = dev->wanted_features,
 251                         .active = dev->features,
 252                         .never_changed = NETIF_F_NEVER_CHANGE,
 253                 },
 254         };
 255         u32 __user *sizeaddr;
 256         u32 copy_size;
 257
 258         ethtool_get_features_compat(dev, features);
 259
 260         sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
 261         if (get_user(copy_size, sizeaddr))
 262                 return -EFAULT;
 263
 264         if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
 265                 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
 266
 267         if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
 268                 return -EFAULT;
 269         useraddr += sizeof(cmd);
 270         if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
 271                 return -EFAULT;
 272
 273         return 0;
 274 }
 275
 276 static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
 277 {
 278         struct ethtool_sfeatures cmd;
 279         struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
 280         int ret = 0;
 281
 282         if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
 283                 return -EFAULT;
 284         useraddr += sizeof(cmd);
 285
 286         if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
 287                 return -EINVAL;
 288
 289         if (copy_from_user(features, useraddr, sizeof(features)))
 290                 return -EFAULT;
 291
 292         if (features[0].valid & ~NETIF_F_ETHTOOL_BITS)
 293                 return -EINVAL;
 294
 295         if (ethtool_set_features_compat(dev, features))
 296                 ret |= ETHTOOL_F_COMPAT;
 297
 298         if (features[0].valid & ~dev->hw_features) {
 299                 features[0].valid &= dev->hw_features;
 300                 ret |= ETHTOOL_F_UNSUPPORTED;
 301         }
 302
 303         dev->wanted_features &= ~features[0].valid;
 304         dev->wanted_features |= features[0].valid & features[0].requested;
 305         netdev_update_features(dev);
 306
 307         if ((dev->wanted_features ^ dev->features) & features[0].valid)
 308                 ret |= ETHTOOL_F_WISH;
 309
 310         return ret;
 311 }
 312
 313 static const char netdev_features_strings[ETHTOOL_DEV_FEATURE_WORDS * 32][ETH_GSTRING_LEN] = {
 314         /* NETIF_F_SG */              "tx-scatter-gather",
 315         /* NETIF_F_IP_CSUM */         "tx-checksum-ipv4",
 316         /* NETIF_F_NO_CSUM */         "tx-checksum-unneeded",
 317         /* NETIF_F_HW_CSUM */         "tx-checksum-ip-generic",
 318         /* NETIF_F_IPV6_CSUM */       "tx_checksum-ipv6",
 319         /* NETIF_F_HIGHDMA */         "highdma",
 320         /* NETIF_F_FRAGLIST */        "tx-scatter-gather-fraglist",
 321         /* NETIF_F_HW_VLAN_TX */      "tx-vlan-hw-insert",
 322
 323         /* NETIF_F_HW_VLAN_RX */      "rx-vlan-hw-parse",
 324         /* NETIF_F_HW_VLAN_FILTER */  "rx-vlan-filter",
 325         /* NETIF_F_VLAN_CHALLENGED */ "vlan-challenged",
 326         /* NETIF_F_GSO */             "tx-generic-segmentation",
 327         /* NETIF_F_LLTX */            "tx-lockless",
 328         /* NETIF_F_NETNS_LOCAL */     "netns-local",
 329         /* NETIF_F_GRO */             "rx-gro",
 330         /* NETIF_F_LRO */             "rx-lro",
 331
 332         /* NETIF_F_TSO */             "tx-tcp-segmentation",
 333         /* NETIF_F_UFO */             "tx-udp-fragmentation",
 334         /* NETIF_F_GSO_ROBUST */      "tx-gso-robust",
 335         /* NETIF_F_TSO_ECN */         "tx-tcp-ecn-segmentation",
 336         /* NETIF_F_TSO6 */            "tx-tcp6-segmentation",
 337         /* NETIF_F_FSO */             "tx-fcoe-segmentation",
 338         "",
 339         "",
 340
 341         /* NETIF_F_FCOE_CRC */        "tx-checksum-fcoe-crc",
 342         /* NETIF_F_SCTP_CSUM */       "tx-checksum-sctp",
 343         /* NETIF_F_FCOE_MTU */        "fcoe-mtu",
 344         /* NETIF_F_NTUPLE */          "rx-ntuple-filter",
 345         /* NETIF_F_RXHASH */          "rx-hashing",
 346         /* NETIF_F_RXCSUM */          "rx-checksum",
 347         "",
 348         "",
 349 };
 350
 351 static int __ethtool_get_sset_count(struct net_device *dev, int sset)
 352 {
 353         const struct ethtool_ops *ops = dev->ethtool_ops;
 354
 355         if (sset == ETH_SS_FEATURES)
 356                 return ARRAY_SIZE(netdev_features_strings);
 357
 358         if (ops && ops->get_sset_count && ops->get_strings)
 359                 return ops->get_sset_count(dev, sset);
 360         else
 361                 return -EOPNOTSUPP;
 362 }
 363
 364 static void __ethtool_get_strings(struct net_device *dev,
 365         u32 stringset, u8 *data)
 366 {
 367         const struct ethtool_ops *ops = dev->ethtool_ops;
 368
 369         if (stringset == ETH_SS_FEATURES)
 370                 memcpy(data, netdev_features_strings,
 371                         sizeof(netdev_features_strings));
 372         else
 373                 /* ops->get_strings is valid because checked earlier */
 374                 ops->get_strings(dev, stringset, data);
 375 }
 376
 377 static u32 ethtool_get_feature_mask(u32 eth_cmd)
 378 {
 379         /* feature masks of legacy discrete ethtool ops */
 380
 381         switch (eth_cmd) {
 382         case ETHTOOL_GTXCSUM:
 383         case ETHTOOL_STXCSUM:
 384                 return NETIF_F_ALL_CSUM | NETIF_F_SCTP_CSUM;
 385         case ETHTOOL_GRXCSUM:
 386         case ETHTOOL_SRXCSUM:
 387                 return NETIF_F_RXCSUM;
 388         case ETHTOOL_GSG:
 389         case ETHTOOL_SSG:
 390                 return NETIF_F_SG;
 391         case ETHTOOL_GTSO:
 392         case ETHTOOL_STSO:
 393                 return NETIF_F_ALL_TSO;
 394         case ETHTOOL_GUFO:
 395         case ETHTOOL_SUFO:
 396                 return NETIF_F_UFO;
 397         case ETHTOOL_GGSO:
 398         case ETHTOOL_SGSO:
 399                 return NETIF_F_GSO;
 400         case ETHTOOL_GGRO:
 401         case ETHTOOL_SGRO:
 402                 return NETIF_F_GRO;
 403         default:
 404                 BUG();
 405         }
 406 }
 407
 408 static void *__ethtool_get_one_feature_actor(struct net_device *dev, u32 ethcmd)
 409 {
 410         const struct ethtool_ops *ops = dev->ethtool_ops;
 411
 412         if (!ops)
 413                 return NULL;
 414
 415         switch (ethcmd) {
 416         case ETHTOOL_GTXCSUM:
 417                 return ops->get_tx_csum;
 418         case ETHTOOL_GRXCSUM:
 419                 return ops->get_rx_csum;
 420         case ETHTOOL_SSG:
 421                 return ops->get_sg;
 422         case ETHTOOL_STSO:
 423                 return ops->get_tso;
 424         case ETHTOOL_SUFO:
 425                 return ops->get_ufo;
 426         default:
 427                 return NULL;
 428         }
 429 }
 430
 431 static u32 __ethtool_get_rx_csum_oldbug(struct net_device *dev)
 432 {
 433         return !!(dev->features & NETIF_F_ALL_CSUM);
 434 }
 435
 436 static int ethtool_get_one_feature(struct net_device *dev,
 437         char __user *useraddr, u32 ethcmd)
 438 {
 439         u32 mask = ethtool_get_feature_mask(ethcmd);
 440         struct ethtool_value edata = {
 441                 .cmd = ethcmd,
 442                 .data = !!(dev->features & mask),
 443         };
 444
 445         /* compatibility with discrete get_ ops */
 446         if (!(dev->hw_features & mask)) {
 447                 u32 (*actor)(struct net_device *);
 448
 449                 actor = __ethtool_get_one_feature_actor(dev, ethcmd);
 450
 451                 /* bug compatibility with old get_rx_csum */
 452                 if (ethcmd == ETHTOOL_GRXCSUM && !actor)
 453                         actor = __ethtool_get_rx_csum_oldbug;
 454
 455                 if (actor)
 456                         edata.data = actor(dev);
 457         }
 458
 459         if (copy_to_user(useraddr, &edata, sizeof(edata)))
 460                 return -EFAULT;
 461         return 0;
 462 }
 463
 464 static int __ethtool_set_tx_csum(struct net_device *dev, u32 data);
 465 static int __ethtool_set_rx_csum(struct net_device *dev, u32 data);
 466 static int __ethtool_set_sg(struct net_device *dev, u32 data);
 467 static int __ethtool_set_tso(struct net_device *dev, u32 data);
 468 static int __ethtool_set_ufo(struct net_device *dev, u32 data);
 469
 470 static int ethtool_set_one_feature(struct net_device *dev,
 471         void __user *useraddr, u32 ethcmd)
 472 {
 473         struct ethtool_value edata;
 474         u32 mask;
 475
 476         if (copy_from_user(&edata, useraddr, sizeof(edata)))
 477                 return -EFAULT;
 478
 479         mask = ethtool_get_feature_mask(ethcmd);
 480         mask &= dev->hw_features;
 481         if (mask) {
 482                 if (edata.data)
 483                         dev->wanted_features |= mask;
 484                 else
 485                         dev->wanted_features &= ~mask;
 486
 487                 netdev_update_features(dev);
 488                 return 0;
 489         }
 490
 491         /* Driver is not converted to ndo_fix_features or does not
 492          * support changing this offload. In the latter case it won't
 493          * have corresponding ethtool_ops field set.
 494          *
 495          * Following part is to be removed after all drivers advertise
 496          * their changeable features in netdev->hw_features and stop
 497          * using discrete offload setting ops.
 498          */
 499
 500         switch (ethcmd) {
 501         case ETHTOOL_STXCSUM:
 502                 return __ethtool_set_tx_csum(dev, edata.data);
 503         case ETHTOOL_SRXCSUM:
 504                 return __ethtool_set_rx_csum(dev, edata.data);
 505         case ETHTOOL_SSG:
 506                 return __ethtool_set_sg(dev, edata.data);
 507         case ETHTOOL_STSO:
 508                 return __ethtool_set_tso(dev, edata.data);
 509         case ETHTOOL_SUFO:
 510                 return __ethtool_set_ufo(dev, edata.data);
 511         default:
 512                 return -EOPNOTSUPP;
 513         }
 514 }
 515
 516 static int __ethtool_set_flags(struct net_device *dev, u32 data)
 517 {
 518         u32 changed;
 519
 520         if (data & ~flags_dup_features)
 521                 return -EINVAL;
 522
 523         /* legacy set_flags() op */
 524         if (dev->ethtool_ops->set_flags) {
 525                 if (unlikely(dev->hw_features & flags_dup_features))
 526                         netdev_warn(dev,
 527                                 "driver BUG: mixed hw_features and set_flags()\n");
 528                 return dev->ethtool_ops->set_flags(dev, data);
 529         }
 530
 531         /* allow changing only bits set in hw_features */
 532         changed = (data ^ dev->wanted_features) & flags_dup_features;
 533         if (changed & ~dev->hw_features)
 534                 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
 535
 536         dev->wanted_features =
 537                 (dev->wanted_features & ~changed) | data;
 538
 539         netdev_update_features(dev);
 540
 541         return 0;
 542 }
 543
 544 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
 545 {
 546         struct ethtool_cmd cmd = { .cmd = ETHTOOL_GSET };
 547         int err;
 548
 549         if (!dev->ethtool_ops->get_settings)
 550                 return -EOPNOTSUPP;
 551
 552         err = dev->ethtool_ops->get_settings(dev, &cmd);
 553         if (err < 0)
 554                 return err;
 555
 556         if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
 557                 return -EFAULT;
 558         return 0;
 559 }
 560
 561 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
 562 {
 563         struct ethtool_cmd cmd;
 564
 565         if (!dev->ethtool_ops->set_settings)
 566                 return -EOPNOTSUPP;
 567
 568         if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
 569                 return -EFAULT;
 570
 571         return dev->ethtool_ops->set_settings(dev, &cmd);
 572 }
 573
 574 static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
 575                                                   void __user *useraddr)
 576 {
 577         struct ethtool_drvinfo info;
 578         const struct ethtool_ops *ops = dev->ethtool_ops;
 579
 580         memset(&info, 0, sizeof(info));
 581         info.cmd = ETHTOOL_GDRVINFO;
 582         if (ops && ops->get_drvinfo) {
 583                 ops->get_drvinfo(dev, &info);
 584         } else if (dev->dev.parent && dev->dev.parent->driver) {
 585                 strlcpy(info.bus_info, dev_name(dev->dev.parent),
 586                         sizeof(info.bus_info));
 587                 strlcpy(info.driver, dev->dev.parent->driver->name,
 588                         sizeof(info.driver));
 589         } else {
 590                 return -EOPNOTSUPP;
 591         }
 592
 593         /*
 594          * this method of obtaining string set info is deprecated;
 595          * Use ETHTOOL_GSSET_INFO instead.
 596          */
 597         if (ops && ops->get_sset_count) {
 598                 int rc;
 599
 600                 rc = ops->get_sset_count(dev, ETH_SS_TEST);
 601                 if (rc >= 0)
 602                         info.testinfo_len = rc;
 603                 rc = ops->get_sset_count(dev, ETH_SS_STATS);
 604                 if (rc >= 0)
 605                         info.n_stats = rc;
 606                 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
 607                 if (rc >= 0)
 608                         info.n_priv_flags = rc;
 609         }
 610         if (ops && ops->get_regs_len)
 611                 info.regdump_len = ops->get_regs_len(dev);
 612         if (ops && ops->get_eeprom_len)
 613                 info.eedump_len = ops->get_eeprom_len(dev);
 614
 615         if (copy_to_user(useraddr, &info, sizeof(info)))
 616                 return -EFAULT;
 617         return 0;
 618 }
 619
 620 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
 621                                                     void __user *useraddr)
 622 {
 623         struct ethtool_sset_info info;
 624         u64 sset_mask;
 625         int i, idx = 0, n_bits = 0, ret, rc;
 626         u32 *info_buf = NULL;
 627
 628         if (copy_from_user(&info, useraddr, sizeof(info)))
 629                 return -EFAULT;
 630
 631         /* store copy of mask, because we zero struct later on */
 632         sset_mask = info.sset_mask;
 633         if (!sset_mask)
 634                 return 0;
 635
 636         /* calculate size of return buffer */
 637         n_bits = hweight64(sset_mask);
 638
 639         memset(&info, 0, sizeof(info));
 640         info.cmd = ETHTOOL_GSSET_INFO;
 641
 642         info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
 643         if (!info_buf)
 644                 return -ENOMEM;
 645
 646         /*
 647          * fill return buffer based on input bitmask and successful
 648          * get_sset_count return
 649          */
 650         for (i = 0; i < 64; i++) {
 651                 if (!(sset_mask & (1ULL << i)))
 652                         continue;
 653
 654                 rc = __ethtool_get_sset_count(dev, i);
 655                 if (rc >= 0) {
 656                         info.sset_mask |= (1ULL << i);
 657                         info_buf[idx++] = rc;
 658                 }
 659         }
 660
 661         ret = -EFAULT;
 662         if (copy_to_user(useraddr, &info, sizeof(info)))
 663                 goto out;
 664
 665         useraddr += offsetof(struct ethtool_sset_info, data);
 666         if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
 667                 goto out;
 668
 669         ret = 0;
 670
 671 out:
 672         kfree(info_buf);
 673         return ret;
 674 }
 675
 676 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
 677                                                 u32 cmd, void __user *useraddr)
 678 {
 679         struct ethtool_rxnfc info;
 680         size_t info_size = sizeof(info);
 681
 682         if (!dev->ethtool_ops->set_rxnfc)
 683                 return -EOPNOTSUPP;
 684
 685         /* struct ethtool_rxnfc was originally defined for
 686          * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
 687          * members.  User-space might still be using that
 688          * definition. */
 689         if (cmd == ETHTOOL_SRXFH)
 690                 info_size = (offsetof(struct ethtool_rxnfc, data) +
 691                              sizeof(info.data));
 692
 693         if (copy_from_user(&info, useraddr, info_size))
 694                 return -EFAULT;
 695
 696         return dev->ethtool_ops->set_rxnfc(dev, &info);
 697 }
 698
 699 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
 700                                                 u32 cmd, void __user *useraddr)
 701 {
 702         struct ethtool_rxnfc info;
 703         size_t info_size = sizeof(info);
 704         const struct ethtool_ops *ops = dev->ethtool_ops;
 705         int ret;
 706         void *rule_buf = NULL;
 707
 708         if (!ops->get_rxnfc)
 709                 return -EOPNOTSUPP;
 710
 711         /* struct ethtool_rxnfc was originally defined for
 712          * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
 713          * members.  User-space might still be using that
 714          * definition. */
 715         if (cmd == ETHTOOL_GRXFH)
 716                 info_size = (offsetof(struct ethtool_rxnfc, data) +
 717                              sizeof(info.data));
 718
 719         if (copy_from_user(&info, useraddr, info_size))
 720                 return -EFAULT;
 721
 722         if (info.cmd == ETHTOOL_GRXCLSRLALL) {
 723                 if (info.rule_cnt > 0) {
 724                         if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
 725                                 rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
 726                                                    GFP_USER);
 727                         if (!rule_buf)
 728                                 return -ENOMEM;
 729                 }
 730         }
 731
 732         ret = ops->get_rxnfc(dev, &info, rule_buf);
 733         if (ret < 0)
 734                 goto err_out;
 735
 736         ret = -EFAULT;
 737         if (copy_to_user(useraddr, &info, info_size))
 738                 goto err_out;
 739
 740         if (rule_buf) {
 741                 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
 742                 if (copy_to_user(useraddr, rule_buf,
 743                                  info.rule_cnt * sizeof(u32)))
 744                         goto err_out;
 745         }
 746         ret = 0;
 747
 748 err_out:
 749         kfree(rule_buf);
 750
 751         return ret;
 752 }
 753
 754 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
 755                                                      void __user *useraddr)
 756 {
 757         struct ethtool_rxfh_indir *indir;
 758         u32 table_size;
 759         size_t full_size;
 760         int ret;
 761
 762         if (!dev->ethtool_ops->get_rxfh_indir)
 763                 return -EOPNOTSUPP;
 764
 765         if (copy_from_user(&table_size,
 766                            useraddr + offsetof(struct ethtool_rxfh_indir, size),
 767                            sizeof(table_size)))
 768                 return -EFAULT;
 769
 770         if (table_size >
 771             (KMALLOC_MAX_SIZE - sizeof(*indir)) / sizeof(*indir->ring_index))
 772                 return -ENOMEM;
 773         full_size = sizeof(*indir) + sizeof(*indir->ring_index) * table_size;
 774         indir = kzalloc(full_size, GFP_USER);
 775         if (!indir)
 776                 return -ENOMEM;
 777
 778         indir->cmd = ETHTOOL_GRXFHINDIR;
 779         indir->size = table_size;
 780         ret = dev->ethtool_ops->get_rxfh_indir(dev, indir);
 781         if (ret)
 782                 goto out;
 783
 784         if (copy_to_user(useraddr, indir, full_size))
 785                 ret = -EFAULT;
 786
 787 out:
 788         kfree(indir);
 789         return ret;
 790 }
 791
 792 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
 793                                                      void __user *useraddr)
 794 {
 795         struct ethtool_rxfh_indir *indir;
 796         u32 table_size;
 797         size_t full_size;
 798         int ret;
 799
 800         if (!dev->ethtool_ops->set_rxfh_indir)
 801                 return -EOPNOTSUPP;
 802
 803         if (copy_from_user(&table_size,
 804                            useraddr + offsetof(struct ethtool_rxfh_indir, size),
 805                            sizeof(table_size)))
 806                 return -EFAULT;
 807
 808         if (table_size >
 809             (KMALLOC_MAX_SIZE - sizeof(*indir)) / sizeof(*indir->ring_index))
 810                 return -ENOMEM;
 811         full_size = sizeof(*indir) + sizeof(*indir->ring_index) * table_size;
 812         indir = kmalloc(full_size, GFP_USER);
 813         if (!indir)
 814                 return -ENOMEM;
 815
 816         if (copy_from_user(indir, useraddr, full_size)) {
 817                 ret = -EFAULT;
 818                 goto out;
 819         }
 820
 821         ret = dev->ethtool_ops->set_rxfh_indir(dev, indir);
 822
 823 out:
 824         kfree(indir);
 825         return ret;
 826 }
 827
 828 static void __rx_ntuple_filter_add(struct ethtool_rx_ntuple_list *list,
 829                         struct ethtool_rx_ntuple_flow_spec *spec,
 830                         struct ethtool_rx_ntuple_flow_spec_container *fsc)
 831 {
 832
 833         /* don't add filters forever */
 834         if (list->count >= ETHTOOL_MAX_NTUPLE_LIST_ENTRY) {
 835                 /* free the container */
 836                 kfree(fsc);
 837                 return;
 838         }
 839
 840         /* Copy the whole filter over */
 841         fsc->fs.flow_type = spec->flow_type;
 842         memcpy(&fsc->fs.h_u, &spec->h_u, sizeof(spec->h_u));
 843         memcpy(&fsc->fs.m_u, &spec->m_u, sizeof(spec->m_u));
 844
 845         fsc->fs.vlan_tag = spec->vlan_tag;
 846         fsc->fs.vlan_tag_mask = spec->vlan_tag_mask;
 847         fsc->fs.data = spec->data;
 848         fsc->fs.data_mask = spec->data_mask;
 849         fsc->fs.action = spec->action;
 850
 851         /* add to the list */
 852         list_add_tail_rcu(&fsc->list, &list->list);
 853         list->count++;
 854 }
 855
 856 /*
 857  * ethtool does not (or did not) set masks for flow parameters that are
 858  * not specified, so if both value and mask are 0 then this must be
 859  * treated as equivalent to a mask with all bits set.  Implement that
 860  * here rather than in drivers.
 861  */
 862 static void rx_ntuple_fix_masks(struct ethtool_rx_ntuple_flow_spec *fs)
 863 {
 864         struct ethtool_tcpip4_spec *entry = &fs->h_u.tcp_ip4_spec;
 865         struct ethtool_tcpip4_spec *mask = &fs->m_u.tcp_ip4_spec;
 866
 867         if (fs->flow_type != TCP_V4_FLOW &&
 868             fs->flow_type != UDP_V4_FLOW &&
 869             fs->flow_type != SCTP_V4_FLOW)
 870                 return;
 871
 872         if (!(entry->ip4src | mask->ip4src))
 873                 mask->ip4src = htonl(0xffffffff);
 874         if (!(entry->ip4dst | mask->ip4dst))
 875                 mask->ip4dst = htonl(0xffffffff);
 876         if (!(entry->psrc | mask->psrc))
 877                 mask->psrc = htons(0xffff);
 878         if (!(entry->pdst | mask->pdst))
 879                 mask->pdst = htons(0xffff);
 880         if (!(entry->tos | mask->tos))
 881                 mask->tos = 0xff;
 882         if (!(fs->vlan_tag | fs->vlan_tag_mask))
 883                 fs->vlan_tag_mask = 0xffff;
 884         if (!(fs->data | fs->data_mask))
 885                 fs->data_mask = 0xffffffffffffffffULL;
 886 }
 887
 888 static noinline_for_stack int ethtool_set_rx_ntuple(struct net_device *dev,
 889                                                     void __user *useraddr)
 890 {
 891         struct ethtool_rx_ntuple cmd;
 892         const struct ethtool_ops *ops = dev->ethtool_ops;
 893         struct ethtool_rx_ntuple_flow_spec_container *fsc = NULL;
 894         int ret;
 895
 896         if (!(dev->features & NETIF_F_NTUPLE))
 897                 return -EINVAL;
 898
 899         if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
 900                 return -EFAULT;
 901
 902         rx_ntuple_fix_masks(&cmd.fs);
 903
 904         /*
 905          * Cache filter in dev struct for GET operation only if
 906          * the underlying driver doesn't have its own GET operation, and
 907          * only if the filter was added successfully.  First make sure we
 908          * can allocate the filter, then continue if successful.
 909          */
 910         if (!ops->get_rx_ntuple) {
 911                 fsc = kmalloc(sizeof(*fsc), GFP_ATOMIC);
 912                 if (!fsc)
 913                         return -ENOMEM;
 914         }
 915
 916         ret = ops->set_rx_ntuple(dev, &cmd);
 917         if (ret) {
 918                 kfree(fsc);
 919                 return ret;
 920         }
 921
 922         if (!ops->get_rx_ntuple)
 923                 __rx_ntuple_filter_add(&dev->ethtool_ntuple_list, &cmd.fs, fsc);
 924
 925         return ret;
 926 }
 927
 928 static int ethtool_get_rx_ntuple(struct net_device *dev, void __user *useraddr)
 929 {
 930         struct ethtool_gstrings gstrings;
 931         const struct ethtool_ops *ops = dev->ethtool_ops;
 932         struct ethtool_rx_ntuple_flow_spec_container *fsc;
 933         u8 *data;
 934         char *p;
 935         int ret, i, num_strings = 0;
 936
 937         if (!ops->get_sset_count)
 938                 return -EOPNOTSUPP;
 939
 940         if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
 941                 return -EFAULT;
 942
 943         ret = ops->get_sset_count(dev, gstrings.string_set);
 944         if (ret < 0)
 945                 return ret;
 946
 947         gstrings.len = ret;
 948
 949         data = kzalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
 950         if (!data)
 951                 return -ENOMEM;
 952
 953         if (ops->get_rx_ntuple) {
 954                 /* driver-specific filter grab */
 955                 ret = ops->get_rx_ntuple(dev, gstrings.string_set, data);
 956                 goto copy;
 957         }
 958
 959         /* default ethtool filter grab */
 960         i = 0;
 961         p = (char *)data;
 962         list_for_each_entry(fsc, &dev->ethtool_ntuple_list.list, list) {
 963                 sprintf(p, "Filter %d:\n", i);
 964                 p += ETH_GSTRING_LEN;
 965                 num_strings++;
 966
 967                 switch (fsc->fs.flow_type) {
 968                 case TCP_V4_FLOW:
 969                         sprintf(p, "\tFlow Type: TCP\n");
 970                         p += ETH_GSTRING_LEN;
 971                         num_strings++;
 972                         break;
 973                 case UDP_V4_FLOW:
 974                         sprintf(p, "\tFlow Type: UDP\n");
 975                         p += ETH_GSTRING_LEN;
 976                         num_strings++;
 977                         break;
 978                 case SCTP_V4_FLOW:
 979                         sprintf(p, "\tFlow Type: SCTP\n");
 980                         p += ETH_GSTRING_LEN;
 981                         num_strings++;
 982                         break;
 983                 case AH_ESP_V4_FLOW:
 984                         sprintf(p, "\tFlow Type: AH ESP\n");
 985                         p += ETH_GSTRING_LEN;
 986                         num_strings++;
 987                         break;
 988                 case ESP_V4_FLOW:
 989                         sprintf(p, "\tFlow Type: ESP\n");
 990                         p += ETH_GSTRING_LEN;
 991                         num_strings++;
 992                         break;
 993                 case IP_USER_FLOW:
 994                         sprintf(p, "\tFlow Type: Raw IP\n");
 995                         p += ETH_GSTRING_LEN;
 996                         num_strings++;
 997                         break;
 998                 case IPV4_FLOW:
 999                         sprintf(p, "\tFlow Type: IPv4\n");
1000                         p += ETH_GSTRING_LEN;
1001                         num_strings++;
1002                         break;
1003                 default:
1004                         sprintf(p, "\tFlow Type: Unknown\n");
1005                         p += ETH_GSTRING_LEN;
1006                         num_strings++;
1007                         goto unknown_filter;
1008                 }
1009
1010                 /* now the rest of the filters */
1011                 switch (fsc->fs.flow_type) {
1012                 case TCP_V4_FLOW:
1013                 case UDP_V4_FLOW:
1014                 case SCTP_V4_FLOW:
1015                         sprintf(p, "\tSrc IP addr: 0x%x\n",
1016                                 fsc->fs.h_u.tcp_ip4_spec.ip4src);
1017                         p += ETH_GSTRING_LEN;
1018                         num_strings++;
1019                         sprintf(p, "\tSrc IP mask: 0x%x\n",
1020                                 fsc->fs.m_u.tcp_ip4_spec.ip4src);
1021                         p += ETH_GSTRING_LEN;
1022                         num_strings++;
1023                         sprintf(p, "\tDest IP addr: 0x%x\n",
1024                                 fsc->fs.h_u.tcp_ip4_spec.ip4dst);
1025                         p += ETH_GSTRING_LEN;
1026                         num_strings++;
1027                         sprintf(p, "\tDest IP mask: 0x%x\n",
1028                                 fsc->fs.m_u.tcp_ip4_spec.ip4dst);
1029                         p += ETH_GSTRING_LEN;
1030                         num_strings++;
1031                         sprintf(p, "\tSrc Port: %d, mask: 0x%x\n",
1032                                 fsc->fs.h_u.tcp_ip4_spec.psrc,
1033                                 fsc->fs.m_u.tcp_ip4_spec.psrc);
1034                         p += ETH_GSTRING_LEN;
1035                         num_strings++;
1036                         sprintf(p, "\tDest Port: %d, mask: 0x%x\n",
1037                                 fsc->fs.h_u.tcp_ip4_spec.pdst,
1038                                 fsc->fs.m_u.tcp_ip4_spec.pdst);
1039                         p += ETH_GSTRING_LEN;
1040                         num_strings++;
1041                         sprintf(p, "\tTOS: %d, mask: 0x%x\n",
1042                                 fsc->fs.h_u.tcp_ip4_spec.tos,
1043                                 fsc->fs.m_u.tcp_ip4_spec.tos);
1044                         p += ETH_GSTRING_LEN;
1045                         num_strings++;
1046                         break;
1047                 case AH_ESP_V4_FLOW:
1048                 case ESP_V4_FLOW:
1049                         sprintf(p, "\tSrc IP addr: 0x%x\n",
1050                                 fsc->fs.h_u.ah_ip4_spec.ip4src);
1051                         p += ETH_GSTRING_LEN;
1052                         num_strings++;
1053                         sprintf(p, "\tSrc IP mask: 0x%x\n",
1054                                 fsc->fs.m_u.ah_ip4_spec.ip4src);
1055                         p += ETH_GSTRING_LEN;
1056                         num_strings++;
1057                         sprintf(p, "\tDest IP addr: 0x%x\n",
1058                                 fsc->fs.h_u.ah_ip4_spec.ip4dst);
1059                         p += ETH_GSTRING_LEN;
1060                         num_strings++;
1061                         sprintf(p, "\tDest IP mask: 0x%x\n",
1062                                 fsc->fs.m_u.ah_ip4_spec.ip4dst);
1063                         p += ETH_GSTRING_LEN;
1064                         num_strings++;
1065                         sprintf(p, "\tSPI: %d, mask: 0x%x\n",
1066                                 fsc->fs.h_u.ah_ip4_spec.spi,
1067                                 fsc->fs.m_u.ah_ip4_spec.spi);
1068                         p += ETH_GSTRING_LEN;
1069                         num_strings++;
1070                         sprintf(p, "\tTOS: %d, mask: 0x%x\n",
1071                                 fsc->fs.h_u.ah_ip4_spec.tos,
1072                                 fsc->fs.m_u.ah_ip4_spec.tos);
1073                         p += ETH_GSTRING_LEN;
1074                         num_strings++;
1075                         break;
1076                 case IP_USER_FLOW:
1077                         sprintf(p, "\tSrc IP addr: 0x%x\n",
1078                                 fsc->fs.h_u.usr_ip4_spec.ip4src);
1079                         p += ETH_GSTRING_LEN;
1080                         num_strings++;
1081                         sprintf(p, "\tSrc IP mask: 0x%x\n",
1082                                 fsc->fs.m_u.usr_ip4_spec.ip4src);
1083                         p += ETH_GSTRING_LEN;
1084                         num_strings++;
1085                         sprintf(p, "\tDest IP addr: 0x%x\n",
1086                                 fsc->fs.h_u.usr_ip4_spec.ip4dst);
1087                         p += ETH_GSTRING_LEN;
1088                         num_strings++;
1089                         sprintf(p, "\tDest IP mask: 0x%x\n",
1090                                 fsc->fs.m_u.usr_ip4_spec.ip4dst);
1091                         p += ETH_GSTRING_LEN;
1092                         num_strings++;
1093                         break;
1094                 case IPV4_FLOW:
1095                         sprintf(p, "\tSrc IP addr: 0x%x\n",
1096                                 fsc->fs.h_u.usr_ip4_spec.ip4src);
1097                         p += ETH_GSTRING_LEN;
1098                         num_strings++;
1099                         sprintf(p, "\tSrc IP mask: 0x%x\n",
1100                                 fsc->fs.m_u.usr_ip4_spec.ip4src);
1101                         p += ETH_GSTRING_LEN;
1102                         num_strings++;
1103                         sprintf(p, "\tDest IP addr: 0x%x\n",
1104                                 fsc->fs.h_u.usr_ip4_spec.ip4dst);
1105                         p += ETH_GSTRING_LEN;
1106                         num_strings++;
1107                         sprintf(p, "\tDest IP mask: 0x%x\n",
1108                                 fsc->fs.m_u.usr_ip4_spec.ip4dst);
1109                         p += ETH_GSTRING_LEN;
1110                         num_strings++;
1111                         sprintf(p, "\tL4 bytes: 0x%x, mask: 0x%x\n",
1112                                 fsc->fs.h_u.usr_ip4_spec.l4_4_bytes,
1113                                 fsc->fs.m_u.usr_ip4_spec.l4_4_bytes);
1114                         p += ETH_GSTRING_LEN;
1115                         num_strings++;
1116                         sprintf(p, "\tTOS: %d, mask: 0x%x\n",
1117                                 fsc->fs.h_u.usr_ip4_spec.tos,
1118                                 fsc->fs.m_u.usr_ip4_spec.tos);
1119                         p += ETH_GSTRING_LEN;
1120                         num_strings++;
1121                         sprintf(p, "\tIP Version: %d, mask: 0x%x\n",
1122                                 fsc->fs.h_u.usr_ip4_spec.ip_ver,
1123                                 fsc->fs.m_u.usr_ip4_spec.ip_ver);
1124                         p += ETH_GSTRING_LEN;
1125                         num_strings++;
1126                         sprintf(p, "\tProtocol: %d, mask: 0x%x\n",
1127                                 fsc->fs.h_u.usr_ip4_spec.proto,
1128                                 fsc->fs.m_u.usr_ip4_spec.proto);
1129                         p += ETH_GSTRING_LEN;
1130                         num_strings++;
1131                         break;
1132                 }
1133                 sprintf(p, "\tVLAN: %d, mask: 0x%x\n",
1134                         fsc->fs.vlan_tag, fsc->fs.vlan_tag_mask);
1135                 p += ETH_GSTRING_LEN;
1136                 num_strings++;
1137                 sprintf(p, "\tUser-defined: 0x%Lx\n", fsc->fs.data);
1138                 p += ETH_GSTRING_LEN;
1139                 num_strings++;
1140                 sprintf(p, "\tUser-defined mask: 0x%Lx\n", fsc->fs.data_mask);
1141                 p += ETH_GSTRING_LEN;
1142                 num_strings++;
1143                 if (fsc->fs.action == ETHTOOL_RXNTUPLE_ACTION_DROP)
1144                         sprintf(p, "\tAction: Drop\n");
1145                 else
1146                         sprintf(p, "\tAction: Direct to queue %d\n",
1147                                 fsc->fs.action);
1148                 p += ETH_GSTRING_LEN;
1149                 num_strings++;
1150 unknown_filter:
1151                 i++;
1152         }
1153 copy:
1154         /* indicate to userspace how many strings we actually have */
1155         gstrings.len = num_strings;
1156         ret = -EFAULT;
1157         if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1158                 goto out;
1159         useraddr += sizeof(gstrings);
1160         if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1161                 goto out;
1162         ret = 0;
1163
1164 out:
1165         kfree(data);
1166         return ret;
1167 }
1168
1169 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
1170 {
1171         struct ethtool_regs regs;
1172         const struct ethtool_ops *ops = dev->ethtool_ops;
1173         void *regbuf;
1174         int reglen, ret;
1175
1176         if (!ops->get_regs || !ops->get_regs_len)
1177                 return -EOPNOTSUPP;
1178
1179         if (copy_from_user(&regs, useraddr, sizeof(regs)))
1180                 return -EFAULT;
1181
1182         reglen = ops->get_regs_len(dev);
1183         if (regs.len > reglen)
1184                 regs.len = reglen;
1185
1186         regbuf = vzalloc(reglen);
1187         if (!regbuf)
1188                 return -ENOMEM;
1189
1190         ops->get_regs(dev, &regs, regbuf);
1191
1192         ret = -EFAULT;
1193         if (copy_to_user(useraddr, &regs, sizeof(regs)))
1194                 goto out;
1195         useraddr += offsetof(struct ethtool_regs, data);
1196         if (copy_to_user(useraddr, regbuf, regs.len))
1197                 goto out;
1198         ret = 0;
1199
1200  out:
1201         vfree(regbuf);
1202         return ret;
1203 }
1204
1205 static int ethtool_reset(struct net_device *dev, char __user *useraddr)
1206 {
1207         struct ethtool_value reset;
1208         int ret;
1209
1210         if (!dev->ethtool_ops->reset)
1211                 return -EOPNOTSUPP;
1212
1213         if (copy_from_user(&reset, useraddr, sizeof(reset)))
1214                 return -EFAULT;
1215
1216         ret = dev->ethtool_ops->reset(dev, &reset.data);
1217         if (ret)
1218                 return ret;
1219
1220         if (copy_to_user(useraddr, &reset, sizeof(reset)))
1221                 return -EFAULT;
1222         return 0;
1223 }
1224
1225 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
1226 {
1227         struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
1228
1229         if (!dev->ethtool_ops->get_wol)
1230                 return -EOPNOTSUPP;
1231
1232         dev->ethtool_ops->get_wol(dev, &wol);
1233
1234         if (copy_to_user(useraddr, &wol, sizeof(wol)))
1235                 return -EFAULT;
1236         return 0;
1237 }
1238
1239 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
1240 {
1241         struct ethtool_wolinfo wol;
1242
1243         if (!dev->ethtool_ops->set_wol)
1244                 return -EOPNOTSUPP;
1245
1246         if (copy_from_user(&wol, useraddr, sizeof(wol)))
1247                 return -EFAULT;
1248
1249         return dev->ethtool_ops->set_wol(dev, &wol);
1250 }
1251
1252 static int ethtool_nway_reset(struct net_device *dev)
1253 {
1254         if (!dev->ethtool_ops->nway_reset)
1255                 return -EOPNOTSUPP;
1256
1257         return dev->ethtool_ops->nway_reset(dev);
1258 }
1259
1260 static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
1261 {
1262         struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
1263
1264         if (!dev->ethtool_ops->get_link)
1265                 return -EOPNOTSUPP;
1266
1267         edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
1268
1269         if (copy_to_user(useraddr, &edata, sizeof(edata)))
1270                 return -EFAULT;
1271         return 0;
1272 }
1273
1274 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
1275 {
1276         struct ethtool_eeprom eeprom;
1277         const struct ethtool_ops *ops = dev->ethtool_ops;
1278         void __user *userbuf = useraddr + sizeof(eeprom);
1279         u32 bytes_remaining;
1280         u8 *data;
1281         int ret = 0;
1282
1283         if (!ops->get_eeprom || !ops->get_eeprom_len)
1284                 return -EOPNOTSUPP;
1285
1286         if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1287                 return -EFAULT;
1288
1289         /* Check for wrap and zero */
1290         if (eeprom.offset + eeprom.len <= eeprom.offset)
1291                 return -EINVAL;
1292
1293         /* Check for exceeding total eeprom len */
1294         if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1295                 return -EINVAL;
1296
1297         data = kmalloc(PAGE_SIZE, GFP_USER);
1298         if (!data)
1299                 return -ENOMEM;
1300
1301         bytes_remaining = eeprom.len;
1302         while (bytes_remaining > 0) {
1303                 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1304
1305                 ret = ops->get_eeprom(dev, &eeprom, data);
1306                 if (ret)
1307                         break;
1308                 if (copy_to_user(userbuf, data, eeprom.len)) {
1309                         ret = -EFAULT;
1310                         break;
1311                 }
1312                 userbuf += eeprom.len;
1313                 eeprom.offset += eeprom.len;
1314                 bytes_remaining -= eeprom.len;
1315         }
1316
1317         eeprom.len = userbuf - (useraddr + sizeof(eeprom));
1318         eeprom.offset -= eeprom.len;
1319         if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
1320                 ret = -EFAULT;
1321
1322         kfree(data);
1323         return ret;
1324 }
1325
1326 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
1327 {
1328         struct ethtool_eeprom eeprom;
1329         const struct ethtool_ops *ops = dev->ethtool_ops;
1330         void __user *userbuf = useraddr + sizeof(eeprom);
1331         u32 bytes_remaining;
1332         u8 *data;
1333         int ret = 0;
1334
1335         if (!ops->set_eeprom || !ops->get_eeprom_len)
1336                 return -EOPNOTSUPP;
1337
1338         if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1339                 return -EFAULT;
1340
1341         /* Check for wrap and zero */
1342         if (eeprom.offset + eeprom.len <= eeprom.offset)
1343                 return -EINVAL;
1344
1345         /* Check for exceeding total eeprom len */
1346         if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1347                 return -EINVAL;
1348
1349         data = kmalloc(PAGE_SIZE, GFP_USER);
1350         if (!data)
1351                 return -ENOMEM;
1352
1353         bytes_remaining = eeprom.len;
1354         while (bytes_remaining > 0) {
1355                 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1356
1357                 if (copy_from_user(data, userbuf, eeprom.len)) {
1358                         ret = -EFAULT;
1359                         break;
1360                 }
1361                 ret = ops->set_eeprom(dev, &eeprom, data);
1362                 if (ret)
1363                         break;
1364                 userbuf += eeprom.len;
1365                 eeprom.offset += eeprom.len;
1366                 bytes_remaining -= eeprom.len;
1367         }
1368
1369         kfree(data);
1370         return ret;
1371 }
1372
1373 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1374                                                    void __user *useraddr)
1375 {
1376         struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1377
1378         if (!dev->ethtool_ops->get_coalesce)
1379                 return -EOPNOTSUPP;
1380
1381         dev->ethtool_ops->get_coalesce(dev, &coalesce);
1382
1383         if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1384                 return -EFAULT;
1385         return 0;
1386 }
1387
1388 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1389                                                    void __user *useraddr)
1390 {
1391         struct ethtool_coalesce coalesce;
1392
1393         if (!dev->ethtool_ops->set_coalesce)
1394                 return -EOPNOTSUPP;
1395
1396         if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1397                 return -EFAULT;
1398
1399         return dev->ethtool_ops->set_coalesce(dev, &coalesce);
1400 }
1401
1402 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1403 {
1404         struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1405
1406         if (!dev->ethtool_ops->get_ringparam)
1407                 return -EOPNOTSUPP;
1408
1409         dev->ethtool_ops->get_ringparam(dev, &ringparam);
1410
1411         if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1412                 return -EFAULT;
1413         return 0;
1414 }
1415
1416 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1417 {
1418         struct ethtool_ringparam ringparam;
1419
1420         if (!dev->ethtool_ops->set_ringparam)
1421                 return -EOPNOTSUPP;
1422
1423         if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1424                 return -EFAULT;
1425
1426         return dev->ethtool_ops->set_ringparam(dev, &ringparam);
1427 }
1428
1429 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1430 {
1431         struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
1432
1433         if (!dev->ethtool_ops->get_pauseparam)
1434                 return -EOPNOTSUPP;
1435
1436         dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1437
1438         if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1439                 return -EFAULT;
1440         return 0;
1441 }
1442
1443 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1444 {
1445         struct ethtool_pauseparam pauseparam;
1446
1447         if (!dev->ethtool_ops->set_pauseparam)
1448                 return -EOPNOTSUPP;
1449
1450         if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1451                 return -EFAULT;
1452
1453         return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1454 }
1455
1456 static int __ethtool_set_sg(struct net_device *dev, u32 data)
1457 {
1458         int err;
1459
1460         if (!dev->ethtool_ops->set_sg)
1461                 return -EOPNOTSUPP;
1462
1463         if (data && !(dev->features & NETIF_F_ALL_CSUM))
1464                 return -EINVAL;
1465
1466         if (!data && dev->ethtool_ops->set_tso) {
1467                 err = dev->ethtool_ops->set_tso(dev, 0);
1468                 if (err)
1469                         return err;
1470         }
1471
1472         if (!data && dev->ethtool_ops->set_ufo) {
1473                 err = dev->ethtool_ops->set_ufo(dev, 0);
1474                 if (err)
1475                         return err;
1476         }
1477         return dev->ethtool_ops->set_sg(dev, data);
1478 }
1479
1480 static int __ethtool_set_tx_csum(struct net_device *dev, u32 data)
1481 {
1482         int err;
1483
1484         if (!dev->ethtool_ops->set_tx_csum)
1485                 return -EOPNOTSUPP;
1486
1487         if (!data && dev->ethtool_ops->set_sg) {
1488                 err = __ethtool_set_sg(dev, 0);
1489                 if (err)
1490                         return err;
1491         }
1492
1493         return dev->ethtool_ops->set_tx_csum(dev, data);
1494 }
1495
1496 static int __ethtool_set_rx_csum(struct net_device *dev, u32 data)
1497 {
1498         if (!dev->ethtool_ops->set_rx_csum)
1499                 return -EOPNOTSUPP;
1500
1501         if (!data)
1502                 dev->features &= ~NETIF_F_GRO;
1503
1504         return dev->ethtool_ops->set_rx_csum(dev, data);
1505 }
1506
1507 static int __ethtool_set_tso(struct net_device *dev, u32 data)
1508 {
1509         if (!dev->ethtool_ops->set_tso)
1510                 return -EOPNOTSUPP;
1511
1512         if (data && !(dev->features & NETIF_F_SG))
1513                 return -EINVAL;
1514
1515         return dev->ethtool_ops->set_tso(dev, data);
1516 }
1517
1518 static int __ethtool_set_ufo(struct net_device *dev, u32 data)
1519 {
1520         if (!dev->ethtool_ops->set_ufo)
1521                 return -EOPNOTSUPP;
1522         if (data && !(dev->features & NETIF_F_SG))
1523                 return -EINVAL;
1524         if (data && !((dev->features & NETIF_F_GEN_CSUM) ||
1525                 (dev->features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))
1526                         == (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM)))
1527                 return -EINVAL;
1528         return dev->ethtool_ops->set_ufo(dev, data);
1529 }
1530
1531 static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1532 {
1533         struct ethtool_test test;
1534         const struct ethtool_ops *ops = dev->ethtool_ops;
1535         u64 *data;
1536         int ret, test_len;
1537
1538         if (!ops->self_test || !ops->get_sset_count)
1539                 return -EOPNOTSUPP;
1540
1541         test_len = ops->get_sset_count(dev, ETH_SS_TEST);
1542         if (test_len < 0)
1543                 return test_len;
1544         WARN_ON(test_len == 0);
1545
1546         if (copy_from_user(&test, useraddr, sizeof(test)))
1547                 return -EFAULT;
1548
1549         test.len = test_len;
1550         data = kmalloc(test_len * sizeof(u64), GFP_USER);
1551         if (!data)
1552                 return -ENOMEM;
1553
1554         ops->self_test(dev, &test, data);
1555
1556         ret = -EFAULT;
1557         if (copy_to_user(useraddr, &test, sizeof(test)))
1558                 goto out;
1559         useraddr += sizeof(test);
1560         if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1561                 goto out;
1562         ret = 0;
1563
1564  out:
1565         kfree(data);
1566         return ret;
1567 }
1568
1569 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1570 {
1571         struct ethtool_gstrings gstrings;
1572         u8 *data;
1573         int ret;
1574
1575         if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1576                 return -EFAULT;
1577
1578         ret = __ethtool_get_sset_count(dev, gstrings.string_set);
1579         if (ret < 0)
1580                 return ret;
1581
1582         gstrings.len = ret;
1583
1584         data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
1585         if (!data)
1586                 return -ENOMEM;
1587
1588         __ethtool_get_strings(dev, gstrings.string_set, data);
1589
1590         ret = -EFAULT;
1591         if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1592                 goto out;
1593         useraddr += sizeof(gstrings);
1594         if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1595                 goto out;
1596         ret = 0;
1597
1598 out:
1599         kfree(data);
1600         return ret;
1601 }
1602
1603 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1604 {
1605         struct ethtool_value id;
1606
1607         if (!dev->ethtool_ops->phys_id)
1608                 return -EOPNOTSUPP;
1609
1610         if (copy_from_user(&id, useraddr, sizeof(id)))
1611                 return -EFAULT;
1612
1613         return dev->ethtool_ops->phys_id(dev, id.data);
1614 }
1615
1616 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1617 {
1618         struct ethtool_stats stats;
1619         const struct ethtool_ops *ops = dev->ethtool_ops;
1620         u64 *data;
1621         int ret, n_stats;
1622
1623         if (!ops->get_ethtool_stats || !ops->get_sset_count)
1624                 return -EOPNOTSUPP;
1625
1626         n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
1627         if (n_stats < 0)
1628                 return n_stats;
1629         WARN_ON(n_stats == 0);
1630
1631         if (copy_from_user(&stats, useraddr, sizeof(stats)))
1632                 return -EFAULT;
1633
1634         stats.n_stats = n_stats;
1635         data = kmalloc(n_stats * sizeof(u64), GFP_USER);
1636         if (!data)
1637                 return -ENOMEM;
1638
1639         ops->get_ethtool_stats(dev, &stats, data);
1640
1641         ret = -EFAULT;
1642         if (copy_to_user(useraddr, &stats, sizeof(stats)))
1643                 goto out;
1644         useraddr += sizeof(stats);
1645         if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
1646                 goto out;
1647         ret = 0;
1648
1649  out:
1650         kfree(data);
1651         return ret;
1652 }
1653
1654 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
1655 {
1656         struct ethtool_perm_addr epaddr;
1657
1658         if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
1659                 return -EFAULT;
1660
1661         if (epaddr.size < dev->addr_len)
1662                 return -ETOOSMALL;
1663         epaddr.size = dev->addr_len;
1664
1665         if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
1666                 return -EFAULT;
1667         useraddr += sizeof(epaddr);
1668         if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
1669                 return -EFAULT;
1670         return 0;
1671 }
1672
1673 static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
1674                              u32 cmd, u32 (*actor)(struct net_device *))
1675 {
1676         struct ethtool_value edata = { .cmd = cmd };
1677
1678         if (!actor)
1679                 return -EOPNOTSUPP;
1680
1681         edata.data = actor(dev);
1682
1683         if (copy_to_user(useraddr, &edata, sizeof(edata)))
1684                 return -EFAULT;
1685         return 0;
1686 }
1687
1688 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
1689                              void (*actor)(struct net_device *, u32))
1690 {
1691         struct ethtool_value edata;
1692
1693         if (!actor)
1694                 return -EOPNOTSUPP;
1695
1696         if (copy_from_user(&edata, useraddr, sizeof(edata)))
1697                 return -EFAULT;
1698
1699         actor(dev, edata.data);
1700         return 0;
1701 }
1702
1703 static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
1704                              int (*actor)(struct net_device *, u32))
1705 {
1706         struct ethtool_value edata;
1707
1708         if (!actor)
1709                 return -EOPNOTSUPP;
1710
1711         if (copy_from_user(&edata, useraddr, sizeof(edata)))
1712                 return -EFAULT;
1713
1714         return actor(dev, edata.data);
1715 }
1716
1717 static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
1718                                                    char __user *useraddr)
1719 {
1720         struct ethtool_flash efl;
1721
1722         if (copy_from_user(&efl, useraddr, sizeof(efl)))
1723                 return -EFAULT;
1724
1725         if (!dev->ethtool_ops->flash_device)
1726                 return -EOPNOTSUPP;
1727
1728         return dev->ethtool_ops->flash_device(dev, &efl);
1729 }
1730
1731 /* The main entry point in this file.  Called from net/core/dev.c */
1732
1733 int dev_ethtool(struct net *net, struct ifreq *ifr)
1734 {
1735         struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
1736         void __user *useraddr = ifr->ifr_data;
1737         u32 ethcmd;
1738         int rc;
1739         u32 old_features;
1740
1741         if (!dev || !netif_device_present(dev))
1742                 return -ENODEV;
1743
1744         if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
1745                 return -EFAULT;
1746
1747         if (!dev->ethtool_ops) {
1748                 /* ETHTOOL_GDRVINFO does not require any driver support.
1749                  * It is also unprivileged and does not change anything,
1750                  * so we can take a shortcut to it. */
1751                 if (ethcmd == ETHTOOL_GDRVINFO)
1752                         return ethtool_get_drvinfo(dev, useraddr);
1753                 else
1754                         return -EOPNOTSUPP;
1755         }
1756
1757         /* Allow some commands to be done by anyone */
1758         switch (ethcmd) {
1759         case ETHTOOL_GSET:
1760         case ETHTOOL_GDRVINFO:
1761         case ETHTOOL_GMSGLVL:
1762         case ETHTOOL_GCOALESCE:
1763         case ETHTOOL_GRINGPARAM:
1764         case ETHTOOL_GPAUSEPARAM:
1765         case ETHTOOL_GRXCSUM:
1766         case ETHTOOL_GTXCSUM:
1767         case ETHTOOL_GSG:
1768         case ETHTOOL_GSTRINGS:
1769         case ETHTOOL_GTSO:
1770         case ETHTOOL_GPERMADDR:
1771         case ETHTOOL_GUFO:
1772         case ETHTOOL_GGSO:
1773         case ETHTOOL_GGRO:
1774         case ETHTOOL_GFLAGS:
1775         case ETHTOOL_GPFLAGS:
1776         case ETHTOOL_GRXFH:
1777         case ETHTOOL_GRXRINGS:
1778         case ETHTOOL_GRXCLSRLCNT:
1779         case ETHTOOL_GRXCLSRULE:
1780         case ETHTOOL_GRXCLSRLALL:
1781         case ETHTOOL_GFEATURES:
1782                 break;
1783         default:
1784                 if (!capable(CAP_NET_ADMIN))
1785                         return -EPERM;
1786         }
1787
1788         if (dev->ethtool_ops->begin) {
1789                 rc = dev->ethtool_ops->begin(dev);
1790                 if (rc  < 0)
1791                         return rc;
1792         }
1793         old_features = dev->features;
1794
1795         switch (ethcmd) {
1796         case ETHTOOL_GSET:
1797                 rc = ethtool_get_settings(dev, useraddr);
1798                 break;
1799         case ETHTOOL_SSET:
1800                 rc = ethtool_set_settings(dev, useraddr);
1801                 break;
1802         case ETHTOOL_GDRVINFO:
1803                 rc = ethtool_get_drvinfo(dev, useraddr);
1804                 break;
1805         case ETHTOOL_GREGS:
1806                 rc = ethtool_get_regs(dev, useraddr);
1807                 break;
1808         case ETHTOOL_GWOL:
1809                 rc = ethtool_get_wol(dev, useraddr);
1810                 break;
1811         case ETHTOOL_SWOL:
1812                 rc = ethtool_set_wol(dev, useraddr);
1813                 break;
1814         case ETHTOOL_GMSGLVL:
1815                 rc = ethtool_get_value(dev, useraddr, ethcmd,
1816                                        dev->ethtool_ops->get_msglevel);
1817                 break;
1818         case ETHTOOL_SMSGLVL:
1819                 rc = ethtool_set_value_void(dev, useraddr,
1820                                        dev->ethtool_ops->set_msglevel);
1821                 break;
1822         case ETHTOOL_NWAY_RST:
1823                 rc = ethtool_nway_reset(dev);
1824                 break;
1825         case ETHTOOL_GLINK:
1826                 rc = ethtool_get_link(dev, useraddr);
1827                 break;
1828         case ETHTOOL_GEEPROM:
1829                 rc = ethtool_get_eeprom(dev, useraddr);
1830                 break;
1831         case ETHTOOL_SEEPROM:
1832                 rc = ethtool_set_eeprom(dev, useraddr);
1833                 break;
1834         case ETHTOOL_GCOALESCE:
1835                 rc = ethtool_get_coalesce(dev, useraddr);
1836                 break;
1837         case ETHTOOL_SCOALESCE:
1838                 rc = ethtool_set_coalesce(dev, useraddr);
1839                 break;
1840         case ETHTOOL_GRINGPARAM:
1841                 rc = ethtool_get_ringparam(dev, useraddr);
1842                 break;
1843         case ETHTOOL_SRINGPARAM:
1844                 rc = ethtool_set_ringparam(dev, useraddr);
1845                 break;
1846         case ETHTOOL_GPAUSEPARAM:
1847                 rc = ethtool_get_pauseparam(dev, useraddr);
1848                 break;
1849         case ETHTOOL_SPAUSEPARAM:
1850                 rc = ethtool_set_pauseparam(dev, useraddr);
1851                 break;
1852         case ETHTOOL_TEST:
1853                 rc = ethtool_self_test(dev, useraddr);
1854                 break;
1855         case ETHTOOL_GSTRINGS:
1856                 rc = ethtool_get_strings(dev, useraddr);
1857                 break;
1858         case ETHTOOL_PHYS_ID:
1859                 rc = ethtool_phys_id(dev, useraddr);
1860                 break;
1861         case ETHTOOL_GSTATS:
1862                 rc = ethtool_get_stats(dev, useraddr);
1863                 break;
1864         case ETHTOOL_GPERMADDR:
1865                 rc = ethtool_get_perm_addr(dev, useraddr);
1866                 break;
1867         case ETHTOOL_GFLAGS:
1868                 rc = ethtool_get_value(dev, useraddr, ethcmd,
1869                                        (dev->ethtool_ops->get_flags ?
1870                                         dev->ethtool_ops->get_flags :
1871                                         ethtool_op_get_flags));
1872                 break;
1873         case ETHTOOL_SFLAGS:
1874                 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
1875                 break;
1876         case ETHTOOL_GPFLAGS:
1877                 rc = ethtool_get_value(dev, useraddr, ethcmd,
1878                                        dev->ethtool_ops->get_priv_flags);
1879                 break;
1880         case ETHTOOL_SPFLAGS:
1881                 rc = ethtool_set_value(dev, useraddr,
1882                                        dev->ethtool_ops->set_priv_flags);
1883                 break;
1884         case ETHTOOL_GRXFH:
1885         case ETHTOOL_GRXRINGS:
1886         case ETHTOOL_GRXCLSRLCNT:
1887         case ETHTOOL_GRXCLSRULE:
1888         case ETHTOOL_GRXCLSRLALL:
1889                 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
1890                 break;
1891         case ETHTOOL_SRXFH:
1892         case ETHTOOL_SRXCLSRLDEL:
1893         case ETHTOOL_SRXCLSRLINS:
1894                 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
1895                 break;
1896         case ETHTOOL_FLASHDEV:
1897                 rc = ethtool_flash_device(dev, useraddr);
1898                 break;
1899         case ETHTOOL_RESET:
1900                 rc = ethtool_reset(dev, useraddr);
1901                 break;
1902         case ETHTOOL_SRXNTUPLE:
1903                 rc = ethtool_set_rx_ntuple(dev, useraddr);
1904                 break;
1905         case ETHTOOL_GRXNTUPLE:
1906                 rc = ethtool_get_rx_ntuple(dev, useraddr);
1907                 break;
1908         case ETHTOOL_GSSET_INFO:
1909                 rc = ethtool_get_sset_info(dev, useraddr);
1910                 break;
1911         case ETHTOOL_GRXFHINDIR:
1912                 rc = ethtool_get_rxfh_indir(dev, useraddr);
1913                 break;
1914         case ETHTOOL_SRXFHINDIR:
1915                 rc = ethtool_set_rxfh_indir(dev, useraddr);
1916                 break;
1917         case ETHTOOL_GFEATURES:
1918                 rc = ethtool_get_features(dev, useraddr);
1919                 break;
1920         case ETHTOOL_SFEATURES:
1921                 rc = ethtool_set_features(dev, useraddr);
1922                 break;
1923         case ETHTOOL_GTXCSUM:
1924         case ETHTOOL_GRXCSUM:
1925         case ETHTOOL_GSG:
1926         case ETHTOOL_GTSO:
1927         case ETHTOOL_GUFO:
1928         case ETHTOOL_GGSO:
1929         case ETHTOOL_GGRO:
1930                 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
1931                 break;
1932         case ETHTOOL_STXCSUM:
1933         case ETHTOOL_SRXCSUM:
1934         case ETHTOOL_SSG:
1935         case ETHTOOL_STSO:
1936         case ETHTOOL_SUFO:
1937         case ETHTOOL_SGSO:
1938         case ETHTOOL_SGRO:
1939                 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
1940                 break;
1941         default:
1942                 rc = -EOPNOTSUPP;
1943         }
1944
1945         if (dev->ethtool_ops->complete)
1946                 dev->ethtool_ops->complete(dev);
1947
1948         if (old_features != dev->features)
1949                 netdev_features_change(dev);
1950
1951         return rc;
1952 }