drivers/net/usb/cdc_ether.c

   1 /*
   2  * CDC Ethernet based networking peripherals
   3  * Copyright (C) 2003-2005 by David Brownell
   4  * Copyright (C) 2006 by Ole Andre Vadla Ravnas (ActiveSync)
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 // #define      DEBUG                   // error path messages, extra info
  21 // #define      VERBOSE                 // more; success messages
  22
  23 #include <linux/module.h>
  24 #include <linux/netdevice.h>
  25 #include <linux/etherdevice.h>
  26 #include <linux/ethtool.h>
  27 #include <linux/workqueue.h>
  28 #include <linux/mii.h>
  29 #include <linux/usb.h>
  30 #include <linux/usb/cdc.h>
  31 #include <linux/usb/usbnet.h>
  32
  33
  34 #if IS_ENABLED(CONFIG_USB_NET_RNDIS_HOST)
  35
  36 static int is_rndis(struct usb_interface_descriptor *desc)
  37 {
  38         return (desc->bInterfaceClass == USB_CLASS_COMM &&
  39                 desc->bInterfaceSubClass == 2 &&
  40                 desc->bInterfaceProtocol == 0xff);
  41 }
  42
  43 static int is_activesync(struct usb_interface_descriptor *desc)
  44 {
  45         return (desc->bInterfaceClass == USB_CLASS_MISC &&
  46                 desc->bInterfaceSubClass == 1 &&
  47                 desc->bInterfaceProtocol == 1);
  48 }
  49
  50 static int is_wireless_rndis(struct usb_interface_descriptor *desc)
  51 {
  52         return (desc->bInterfaceClass == USB_CLASS_WIRELESS_CONTROLLER &&
  53                 desc->bInterfaceSubClass == 1 &&
  54                 desc->bInterfaceProtocol == 3);
  55 }
  56
  57 #else
  58
  59 #define is_rndis(desc)          0
  60 #define is_activesync(desc)     0
  61 #define is_wireless_rndis(desc) 0
  62
  63 #endif
  64
  65 static const u8 mbm_guid[16] = {
  66         0xa3, 0x17, 0xa8, 0x8b, 0x04, 0x5e, 0x4f, 0x01,
  67         0xa6, 0x07, 0xc0, 0xff, 0xcb, 0x7e, 0x39, 0x2a,
  68 };
  69
  70 /* probes control interface, claims data interface, collects the bulk
  71  * endpoints, activates data interface (if needed), maybe sets MTU.
  72  * all pure cdc, except for certain firmware workarounds, and knowing
  73  * that rndis uses one different rule.
  74  */
  75 int usbnet_generic_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
  76 {
  77         u8                              *buf = intf->cur_altsetting->extra;
  78         int                             len = intf->cur_altsetting->extralen;
  79         struct usb_interface_descriptor *d;
  80         struct cdc_state                *info = (void *) &dev->data;
  81         int                             status;
  82         int                             rndis;
  83         bool                            android_rndis_quirk = false;
  84         struct usb_driver               *driver = driver_of(intf);
  85         struct usb_cdc_mdlm_desc        *desc = NULL;
  86         struct usb_cdc_mdlm_detail_desc *detail = NULL;
  87
  88         if (sizeof(dev->data) < sizeof(*info))
  89                 return -EDOM;
  90
  91         /* expect strict spec conformance for the descriptors, but
  92          * cope with firmware which stores them in the wrong place
  93          */
  94         if (len == 0 && dev->udev->actconfig->extralen) {
  95                 /* Motorola SB4100 (and others: Brad Hards says it's
  96                  * from a Broadcom design) put CDC descriptors here
  97                  */
  98                 buf = dev->udev->actconfig->extra;
  99                 len = dev->udev->actconfig->extralen;
 100                 dev_dbg(&intf->dev, "CDC descriptors on config\n");
 101         }
 102
 103         /* Maybe CDC descriptors are after the endpoint?  This bug has
 104          * been seen on some 2Wire Inc RNDIS-ish products.
 105          */
 106         if (len == 0) {
 107                 struct usb_host_endpoint        *hep;
 108
 109                 hep = intf->cur_altsetting->endpoint;
 110                 if (hep) {
 111                         buf = hep->extra;
 112                         len = hep->extralen;
 113                 }
 114                 if (len)
 115                         dev_dbg(&intf->dev,
 116                                 "CDC descriptors on endpoint\n");
 117         }
 118
 119         /* this assumes that if there's a non-RNDIS vendor variant
 120          * of cdc-acm, it'll fail RNDIS requests cleanly.
 121          */
 122         rndis = (is_rndis(&intf->cur_altsetting->desc) ||
 123                  is_activesync(&intf->cur_altsetting->desc) ||
 124                  is_wireless_rndis(&intf->cur_altsetting->desc));
 125
 126         memset(info, 0, sizeof(*info));
 127         info->control = intf;
 128         while (len > 3) {
 129                 if (buf[1] != USB_DT_CS_INTERFACE)
 130                         goto next_desc;
 131
 132                 /* use bDescriptorSubType to identify the CDC descriptors.
 133                  * We expect devices with CDC header and union descriptors.
 134                  * For CDC Ethernet we need the ethernet descriptor.
 135                  * For RNDIS, ignore two (pointless) CDC modem descriptors
 136                  * in favor of a complicated OID-based RPC scheme doing what
 137                  * CDC Ethernet achieves with a simple descriptor.
 138                  */
 139                 switch (buf[2]) {
 140                 case USB_CDC_HEADER_TYPE:
 141                         if (info->header) {
 142                                 dev_dbg(&intf->dev, "extra CDC header\n");
 143                                 goto bad_desc;
 144                         }
 145                         info->header = (void *) buf;
 146                         if (info->header->bLength != sizeof(*info->header)) {
 147                                 dev_dbg(&intf->dev, "CDC header len %u\n",
 148                                         info->header->bLength);
 149                                 goto bad_desc;
 150                         }
 151                         break;
 152                 case USB_CDC_ACM_TYPE:
 153                         /* paranoia:  disambiguate a "real" vendor-specific
 154                          * modem interface from an RNDIS non-modem.
 155                          */
 156                         if (rndis) {
 157                                 struct usb_cdc_acm_descriptor *acm;
 158
 159                                 acm = (void *) buf;
 160                                 if (acm->bmCapabilities) {
 161                                         dev_dbg(&intf->dev,
 162                                                 "ACM capabilities %02x, "
 163                                                 "not really RNDIS?\n",
 164                                                 acm->bmCapabilities);
 165                                         goto bad_desc;
 166                                 }
 167                         }
 168                         break;
 169                 case USB_CDC_UNION_TYPE:
 170                         if (info->u) {
 171                                 dev_dbg(&intf->dev, "extra CDC union\n");
 172                                 goto bad_desc;
 173                         }
 174                         info->u = (void *) buf;
 175                         if (info->u->bLength != sizeof(*info->u)) {
 176                                 dev_dbg(&intf->dev, "CDC union len %u\n",
 177                                         info->u->bLength);
 178                                 goto bad_desc;
 179                         }
 180
 181                         /* we need a master/control interface (what we're
 182                          * probed with) and a slave/data interface; union
 183                          * descriptors sort this all out.
 184                          */
 185                         info->control = usb_ifnum_to_if(dev->udev,
 186                                                 info->u->bMasterInterface0);
 187                         info->data = usb_ifnum_to_if(dev->udev,
 188                                                 info->u->bSlaveInterface0);
 189                         if (!info->control || !info->data) {
 190                                 dev_dbg(&intf->dev,
 191                                         "master #%u/%p slave #%u/%p\n",
 192                                         info->u->bMasterInterface0,
 193                                         info->control,
 194                                         info->u->bSlaveInterface0,
 195                                         info->data);
 196                                 /* fall back to hard-wiring for RNDIS */
 197                                 if (rndis) {
 198                                         android_rndis_quirk = true;
 199                                         goto next_desc;
 200                                 }
 201                                 goto bad_desc;
 202                         }
 203                         if (info->control != intf) {
 204                                 dev_dbg(&intf->dev, "bogus CDC Union\n");
 205                                 /* Ambit USB Cable Modem (and maybe others)
 206                                  * interchanges master and slave interface.
 207                                  */
 208                                 if (info->data == intf) {
 209                                         info->data = info->control;
 210                                         info->control = intf;
 211                                 } else
 212                                         goto bad_desc;
 213                         }
 214
 215                         /* some devices merge these - skip class check */
 216                         if (info->control == info->data)
 217                                 goto next_desc;
 218
 219                         /* a data interface altsetting does the real i/o */
 220                         d = &info->data->cur_altsetting->desc;
 221                         if (d->bInterfaceClass != USB_CLASS_CDC_DATA) {
 222                                 dev_dbg(&intf->dev, "slave class %u\n",
 223                                         d->bInterfaceClass);
 224                                 goto bad_desc;
 225                         }
 226                         break;
 227                 case USB_CDC_ETHERNET_TYPE:
 228                         if (info->ether) {
 229                                 dev_dbg(&intf->dev, "extra CDC ether\n");
 230                                 goto bad_desc;
 231                         }
 232                         info->ether = (void *) buf;
 233                         if (info->ether->bLength != sizeof(*info->ether)) {
 234                                 dev_dbg(&intf->dev, "CDC ether len %u\n",
 235                                         info->ether->bLength);
 236                                 goto bad_desc;
 237                         }
 238                         dev->hard_mtu = le16_to_cpu(
 239                                                 info->ether->wMaxSegmentSize);
 240                         /* because of Zaurus, we may be ignoring the host
 241                          * side link address we were given.
 242                          */
 243                         break;
 244                 case USB_CDC_MDLM_TYPE:
 245                         if (desc) {
 246                                 dev_dbg(&intf->dev, "extra MDLM descriptor\n");
 247                                 goto bad_desc;
 248                         }
 249
 250                         desc = (void *)buf;
 251
 252                         if (desc->bLength != sizeof(*desc))
 253                                 goto bad_desc;
 254
 255                         if (memcmp(&desc->bGUID, mbm_guid, 16))
 256                                 goto bad_desc;
 257                         break;
 258                 case USB_CDC_MDLM_DETAIL_TYPE:
 259                         if (detail) {
 260                                 dev_dbg(&intf->dev, "extra MDLM detail descriptor\n");
 261                                 goto bad_desc;
 262                         }
 263
 264                         detail = (void *)buf;
 265
 266                         if (detail->bGuidDescriptorType == 0) {
 267                                 if (detail->bLength < (sizeof(*detail) + 1))
 268                                         goto bad_desc;
 269                         } else
 270                                 goto bad_desc;
 271                         break;
 272                 }
 273 next_desc:
 274                 len -= buf[0];  /* bLength */
 275                 buf += buf[0];
 276         }
 277
 278         /* Microsoft ActiveSync based and some regular RNDIS devices lack the
 279          * CDC descriptors, so we'll hard-wire the interfaces and not check
 280          * for descriptors.
 281          *
 282          * Some Android RNDIS devices have a CDC Union descriptor pointing
 283          * to non-existing interfaces.  Ignore that and attempt the same
 284          * hard-wired 0 and 1 interfaces.
 285          */
 286         if (rndis && (!info->u || android_rndis_quirk)) {
 287                 info->control = usb_ifnum_to_if(dev->udev, 0);
 288                 info->data = usb_ifnum_to_if(dev->udev, 1);
 289                 if (!info->control || !info->data || info->control != intf) {
 290                         dev_dbg(&intf->dev,
 291                                 "rndis: master #0/%p slave #1/%p\n",
 292                                 info->control,
 293                                 info->data);
 294                         goto bad_desc;
 295                 }
 296
 297         } else if (!info->header || !info->u || (!rndis && !info->ether)) {
 298                 dev_dbg(&intf->dev, "missing cdc %s%s%sdescriptor\n",
 299                         info->header ? "" : "header ",
 300                         info->u ? "" : "union ",
 301                         info->ether ? "" : "ether ");
 302                 goto bad_desc;
 303         }
 304
 305         /* claim data interface and set it up ... with side effects.
 306          * network traffic can't flow until an altsetting is enabled.
 307          */
 308         if (info->data != info->control) {
 309                 status = usb_driver_claim_interface(driver, info->data, dev);
 310                 if (status < 0)
 311                         return status;
 312         }
 313         status = usbnet_get_endpoints(dev, info->data);
 314         if (status < 0) {
 315                 /* ensure immediate exit from usbnet_disconnect */
 316                 usb_set_intfdata(info->data, NULL);
 317                 if (info->data != info->control)
 318                         usb_driver_release_interface(driver, info->data);
 319                 return status;
 320         }
 321
 322         /* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */
 323         if (info->data != info->control)
 324                 dev->status = NULL;
 325         if (info->control->cur_altsetting->desc.bNumEndpoints == 1) {
 326                 struct usb_endpoint_descriptor  *desc;
 327
 328                 dev->status = &info->control->cur_altsetting->endpoint [0];
 329                 desc = &dev->status->desc;
 330                 if (!usb_endpoint_is_int_in(desc) ||
 331                     (le16_to_cpu(desc->wMaxPacketSize)
 332                      < sizeof(struct usb_cdc_notification)) ||
 333                     !desc->bInterval) {
 334                         dev_dbg(&intf->dev, "bad notification endpoint\n");
 335                         dev->status = NULL;
 336                 }
 337         }
 338         if (rndis && !dev->status) {
 339                 dev_dbg(&intf->dev, "missing RNDIS status endpoint\n");
 340                 usb_set_intfdata(info->data, NULL);
 341                 usb_driver_release_interface(driver, info->data);
 342                 return -ENODEV;
 343         }
 344
 345         /* Some devices don't initialise properly. In particular
 346          * the packet filter is not reset. There are devices that
 347          * don't do reset all the way. So the packet filter should
 348          * be set to a sane initial value.
 349          */
 350         usb_control_msg(dev->udev,
 351                         usb_sndctrlpipe(dev->udev, 0),
 352                         USB_CDC_SET_ETHERNET_PACKET_FILTER,
 353                         USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 354                         USB_CDC_PACKET_TYPE_ALL_MULTICAST | USB_CDC_PACKET_TYPE_DIRECTED | USB_CDC_PACKET_TYPE_BROADCAST,
 355                         intf->cur_altsetting->desc.bInterfaceNumber,
 356                         NULL,
 357                         0,
 358                         USB_CTRL_SET_TIMEOUT
 359                 );
 360         return 0;
 361
 362 bad_desc:
 363         dev_info(&dev->udev->dev, "bad CDC descriptors\n");
 364         return -ENODEV;
 365 }
 366 EXPORT_SYMBOL_GPL(usbnet_generic_cdc_bind);
 367
 368 void usbnet_cdc_unbind(struct usbnet *dev, struct usb_interface *intf)
 369 {
 370         struct cdc_state                *info = (void *) &dev->data;
 371         struct usb_driver               *driver = driver_of(intf);
 372
 373         /* combined interface - nothing  to do */
 374         if (info->data == info->control)
 375                 return;
 376
 377         /* disconnect master --> disconnect slave */
 378         if (intf == info->control && info->data) {
 379                 /* ensure immediate exit from usbnet_disconnect */
 380                 usb_set_intfdata(info->data, NULL);
 381                 usb_driver_release_interface(driver, info->data);
 382                 info->data = NULL;
 383         }
 384
 385         /* and vice versa (just in case) */
 386         else if (intf == info->data && info->control) {
 387                 /* ensure immediate exit from usbnet_disconnect */
 388                 usb_set_intfdata(info->control, NULL);
 389                 usb_driver_release_interface(driver, info->control);
 390                 info->control = NULL;
 391         }
 392 }
 393 EXPORT_SYMBOL_GPL(usbnet_cdc_unbind);
 394
 395 /* Communications Device Class, Ethernet Control model
 396  *
 397  * Takes two interfaces.  The DATA interface is inactive till an altsetting
 398  * is selected.  Configuration data includes class descriptors.  There's
 399  * an optional status endpoint on the control interface.
 400  *
 401  * This should interop with whatever the 2.4 "CDCEther.c" driver
 402  * (by Brad Hards) talked with, with more functionality.
 403  */
 404
 405 static void dumpspeed(struct usbnet *dev, __le32 *speeds)
 406 {
 407         netif_info(dev, timer, dev->net,
 408                    "link speeds: %u kbps up, %u kbps down\n",
 409                    __le32_to_cpu(speeds[0]) / 1000,
 410                    __le32_to_cpu(speeds[1]) / 1000);
 411 }
 412
 413 void usbnet_cdc_status(struct usbnet *dev, struct urb *urb)
 414 {
 415         struct usb_cdc_notification     *event;
 416
 417         if (urb->actual_length < sizeof(*event))
 418                 return;
 419
 420         /* SPEED_CHANGE can get split into two 8-byte packets */
 421         if (test_and_clear_bit(EVENT_STS_SPLIT, &dev->flags)) {
 422                 dumpspeed(dev, (__le32 *) urb->transfer_buffer);
 423                 return;
 424         }
 425
 426         event = urb->transfer_buffer;
 427         switch (event->bNotificationType) {
 428         case USB_CDC_NOTIFY_NETWORK_CONNECTION:
 429                 netif_dbg(dev, timer, dev->net, "CDC: carrier %s\n",
 430                           event->wValue ? "on" : "off");
 431                 usbnet_link_change(dev, !!event->wValue, 0);
 432                 break;
 433         case USB_CDC_NOTIFY_SPEED_CHANGE:       /* tx/rx rates */
 434                 netif_dbg(dev, timer, dev->net, "CDC: speed change (len %d)\n",
 435                           urb->actual_length);
 436                 if (urb->actual_length != (sizeof(*event) + 8))
 437                         set_bit(EVENT_STS_SPLIT, &dev->flags);
 438                 else
 439                         dumpspeed(dev, (__le32 *) &event[1]);
 440                 break;
 441         /* USB_CDC_NOTIFY_RESPONSE_AVAILABLE can happen too (e.g. RNDIS),
 442          * but there are no standard formats for the response data.
 443          */
 444         default:
 445                 netdev_err(dev->net, "CDC: unexpected notification %02x!\n",
 446                            event->bNotificationType);
 447                 break;
 448         }
 449 }
 450 EXPORT_SYMBOL_GPL(usbnet_cdc_status);
 451
 452 int usbnet_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
 453 {
 454         int                             status;
 455         struct cdc_state                *info = (void *) &dev->data;
 456
 457         BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data)
 458                         < sizeof(struct cdc_state)));
 459
 460         status = usbnet_generic_cdc_bind(dev, intf);
 461         if (status < 0)
 462                 return status;
 463
 464         status = usbnet_get_ethernet_addr(dev, info->ether->iMACAddress);
 465         if (status < 0) {
 466                 usb_set_intfdata(info->data, NULL);
 467                 usb_driver_release_interface(driver_of(intf), info->data);
 468                 return status;
 469         }
 470
 471         /* FIXME cdc-ether has some multicast code too, though it complains
 472          * in routine cases.  info->ether describes the multicast support.
 473          * Implement that here, manipulating the cdc filter as needed.
 474          */
 475         return 0;
 476 }
 477 EXPORT_SYMBOL_GPL(usbnet_cdc_bind);
 478
 479 static const struct driver_info cdc_info = {
 480         .description =  "CDC Ethernet Device",
 481         .flags =        FLAG_ETHER | FLAG_POINTTOPOINT,
 482         .bind =         usbnet_cdc_bind,
 483         .unbind =       usbnet_cdc_unbind,
 484         .status =       usbnet_cdc_status,
 485         .manage_power = usbnet_manage_power,
 486 };
 487
 488 static const struct driver_info wwan_info = {
 489         .description =  "Mobile Broadband Network Device",
 490         .flags =        FLAG_WWAN,
 491         .bind =         usbnet_cdc_bind,
 492         .unbind =       usbnet_cdc_unbind,
 493         .status =       usbnet_cdc_status,
 494         .manage_power = usbnet_manage_power,
 495 };
 496
 497 /*-------------------------------------------------------------------------*/
 498
 499 #define HUAWEI_VENDOR_ID        0x12D1
 500 #define NOVATEL_VENDOR_ID       0x1410
 501 #define ZTE_VENDOR_ID           0x19D2
 502 #define DELL_VENDOR_ID          0x413C
 503 #define REALTEK_VENDOR_ID       0x0bda
 504 #define SAMSUNG_VENDOR_ID       0x04e8
 505
 506 static const struct usb_device_id       products[] = {
 507 /* BLACKLIST !!
 508  *
 509  * First blacklist any products that are egregiously nonconformant
 510  * with the CDC Ethernet specs.  Minor braindamage we cope with; when
 511  * they're not even trying, needing a separate driver is only the first
 512  * of the differences to show up.
 513  */
 514
 515 #define ZAURUS_MASTER_INTERFACE \
 516         .bInterfaceClass        = USB_CLASS_COMM, \
 517         .bInterfaceSubClass     = USB_CDC_SUBCLASS_ETHERNET, \
 518         .bInterfaceProtocol     = USB_CDC_PROTO_NONE
 519
 520 /* SA-1100 based Sharp Zaurus ("collie"), or compatible;
 521  * wire-incompatible with true CDC Ethernet implementations.
 522  * (And, it seems, needlessly so...)
 523  */
 524 {
 525         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 526                           | USB_DEVICE_ID_MATCH_DEVICE,
 527         .idVendor               = 0x04DD,
 528         .idProduct              = 0x8004,
 529         ZAURUS_MASTER_INTERFACE,
 530         .driver_info            = 0,
 531 },
 532
 533 /* PXA-25x based Sharp Zaurii.  Note that it seems some of these
 534  * (later models especially) may have shipped only with firmware
 535  * advertising false "CDC MDLM" compatibility ... but we're not
 536  * clear which models did that, so for now let's assume the worst.
 537  */
 538 {
 539         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 540                           | USB_DEVICE_ID_MATCH_DEVICE,
 541         .idVendor               = 0x04DD,
 542         .idProduct              = 0x8005,       /* A-300 */
 543         ZAURUS_MASTER_INTERFACE,
 544         .driver_info            = 0,
 545 }, {
 546         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 547                           | USB_DEVICE_ID_MATCH_DEVICE,
 548         .idVendor               = 0x04DD,
 549         .idProduct              = 0x8006,       /* B-500/SL-5600 */
 550         ZAURUS_MASTER_INTERFACE,
 551         .driver_info            = 0,
 552 }, {
 553         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 554                           | USB_DEVICE_ID_MATCH_DEVICE,
 555         .idVendor               = 0x04DD,
 556         .idProduct              = 0x8007,       /* C-700 */
 557         ZAURUS_MASTER_INTERFACE,
 558         .driver_info            = 0,
 559 }, {
 560         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 561                  | USB_DEVICE_ID_MATCH_DEVICE,
 562         .idVendor               = 0x04DD,
 563         .idProduct              = 0x9031,       /* C-750 C-760 */
 564         ZAURUS_MASTER_INTERFACE,
 565         .driver_info            = 0,
 566 }, {
 567         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 568                  | USB_DEVICE_ID_MATCH_DEVICE,
 569         .idVendor               = 0x04DD,
 570         .idProduct              = 0x9032,       /* SL-6000 */
 571         ZAURUS_MASTER_INTERFACE,
 572         .driver_info            = 0,
 573 }, {
 574         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 575                  | USB_DEVICE_ID_MATCH_DEVICE,
 576         .idVendor               = 0x04DD,
 577         /* reported with some C860 units */
 578         .idProduct              = 0x9050,       /* C-860 */
 579         ZAURUS_MASTER_INTERFACE,
 580         .driver_info            = 0,
 581 },
 582
 583 /* Olympus has some models with a Zaurus-compatible option.
 584  * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
 585  */
 586 {
 587         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 588                  | USB_DEVICE_ID_MATCH_DEVICE,
 589         .idVendor               = 0x07B4,
 590         .idProduct              = 0x0F02,       /* R-1000 */
 591         ZAURUS_MASTER_INTERFACE,
 592         .driver_info            = 0,
 593 },
 594
 595 /* LG Electronics VL600 wants additional headers on every frame */
 596 {
 597         USB_DEVICE_AND_INTERFACE_INFO(0x1004, 0x61aa, USB_CLASS_COMM,
 598                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 599         .driver_info = 0,
 600 },
 601
 602 /* Logitech Harmony 900 - uses the pseudo-MDLM (BLAN) driver */
 603 {
 604         USB_DEVICE_AND_INTERFACE_INFO(0x046d, 0xc11f, USB_CLASS_COMM,
 605                         USB_CDC_SUBCLASS_MDLM, USB_CDC_PROTO_NONE),
 606         .driver_info            = 0,
 607 },
 608
 609 /* Novatel USB551L and MC551 - handled by qmi_wwan */
 610 {
 611         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0xB001, USB_CLASS_COMM,
 612                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 613         .driver_info = 0,
 614 },
 615
 616 /* Novatel E362 - handled by qmi_wwan */
 617 {
 618         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9010, USB_CLASS_COMM,
 619                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 620         .driver_info = 0,
 621 },
 622
 623 /* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
 624 {
 625         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8195, USB_CLASS_COMM,
 626                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 627         .driver_info = 0,
 628 },
 629
 630 /* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
 631 {
 632         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8196, USB_CLASS_COMM,
 633                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 634         .driver_info = 0,
 635 },
 636
 637 /* Dell Wireless 5804 (Novatel E371) - handled by qmi_wwan */
 638 {
 639         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x819b, USB_CLASS_COMM,
 640                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 641         .driver_info = 0,
 642 },
 643
 644 /* Novatel Expedite E371 - handled by qmi_wwan */
 645 {
 646         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9011, USB_CLASS_COMM,
 647                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 648         .driver_info = 0,
 649 },
 650
 651 /* AnyDATA ADU960S - handled by qmi_wwan */
 652 {
 653         USB_DEVICE_AND_INTERFACE_INFO(0x16d5, 0x650a, USB_CLASS_COMM,
 654                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 655         .driver_info = 0,
 656 },
 657
 658 /* Huawei E1820 - handled by qmi_wwan */
 659 {
 660         USB_DEVICE_INTERFACE_NUMBER(HUAWEI_VENDOR_ID, 0x14ac, 1),
 661         .driver_info = 0,
 662 },
 663
 664 /* Realtek RTL8152 Based USB 2.0 Ethernet Adapters */
 665 {
 666         USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8152, USB_CLASS_COMM,
 667                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 668         .driver_info = 0,
 669 },
 670
 671 /* Realtek RTL8153 Based USB 3.0 Ethernet Adapters */
 672 {
 673         USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8153, USB_CLASS_COMM,
 674                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 675         .driver_info = 0,
 676 },
 677
 678 /* Samsung USB Ethernet Adapters */
 679 {
 680         USB_DEVICE_AND_INTERFACE_INFO(SAMSUNG_VENDOR_ID, 0xa101, USB_CLASS_COMM,
 681                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 682         .driver_info = 0,
 683 },
 684
 685 /* WHITELIST!!!
 686  *
 687  * CDC Ether uses two interfaces, not necessarily consecutive.
 688  * We match the main interface, ignoring the optional device
 689  * class so we could handle devices that aren't exclusively
 690  * CDC ether.
 691  *
 692  * NOTE:  this match must come AFTER entries blacklisting devices
 693  * because of bugs/quirks in a given product (like Zaurus, above).
 694  */
 695 {
 696         /* ZTE (Vodafone) K3805-Z */
 697         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1003, USB_CLASS_COMM,
 698                                       USB_CDC_SUBCLASS_ETHERNET,
 699                                       USB_CDC_PROTO_NONE),
 700         .driver_info = (unsigned long)&wwan_info,
 701 }, {
 702         /* ZTE (Vodafone) K3806-Z */
 703         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1015, USB_CLASS_COMM,
 704                                       USB_CDC_SUBCLASS_ETHERNET,
 705                                       USB_CDC_PROTO_NONE),
 706         .driver_info = (unsigned long)&wwan_info,
 707 }, {
 708         /* ZTE (Vodafone) K4510-Z */
 709         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1173, USB_CLASS_COMM,
 710                                       USB_CDC_SUBCLASS_ETHERNET,
 711                                       USB_CDC_PROTO_NONE),
 712         .driver_info = (unsigned long)&wwan_info,
 713 }, {
 714         /* ZTE (Vodafone) K3770-Z */
 715         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1177, USB_CLASS_COMM,
 716                                       USB_CDC_SUBCLASS_ETHERNET,
 717                                       USB_CDC_PROTO_NONE),
 718         .driver_info = (unsigned long)&wwan_info,
 719 }, {
 720         /* ZTE (Vodafone) K3772-Z */
 721         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1181, USB_CLASS_COMM,
 722                                       USB_CDC_SUBCLASS_ETHERNET,
 723                                       USB_CDC_PROTO_NONE),
 724         .driver_info = (unsigned long)&wwan_info,
 725 }, {
 726         /* Telit modules */
 727         USB_VENDOR_AND_INTERFACE_INFO(0x1bc7, USB_CLASS_COMM,
 728                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 729         .driver_info = (kernel_ulong_t) &wwan_info,
 730 }, {
 731         USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
 732                         USB_CDC_PROTO_NONE),
 733         .driver_info = (unsigned long) &cdc_info,
 734 }, {
 735         USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
 736                         USB_CDC_PROTO_NONE),
 737         .driver_info = (unsigned long)&wwan_info,
 738
 739 }, {
 740         /* Various Huawei modems with a network port like the UMG1831 */
 741         USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_COMM,
 742                                       USB_CDC_SUBCLASS_ETHERNET, 255),
 743         .driver_info = (unsigned long)&wwan_info,
 744 },
 745         { },            /* END */
 746 };
 747 MODULE_DEVICE_TABLE(usb, products);
 748
 749 static struct usb_driver cdc_driver = {
 750         .name =         "cdc_ether",
 751         .id_table =     products,
 752         .probe =        usbnet_probe,
 753         .disconnect =   usbnet_disconnect,
 754         .suspend =      usbnet_suspend,
 755         .resume =       usbnet_resume,
 756         .reset_resume = usbnet_resume,
 757         .supports_autosuspend = 1,
 758         .disable_hub_initiated_lpm = 1,
 759 };
 760
 761 module_usb_driver(cdc_driver);
 762
 763 MODULE_AUTHOR("David Brownell");
 764 MODULE_DESCRIPTION("USB CDC Ethernet devices");
 765 MODULE_LICENSE("GPL");