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 static void usbnet_cdc_update_filter(struct usbnet *dev)
  71 {
  72         struct cdc_state        *info = (void *) &dev->data;
  73         struct usb_interface    *intf = info->control;
  74         struct net_device       *net = dev->net;
  75
  76         u16 cdc_filter = USB_CDC_PACKET_TYPE_DIRECTED
  77                         | USB_CDC_PACKET_TYPE_BROADCAST;
  78
  79         /* filtering on the device is an optional feature and not worth
  80          * the hassle so we just roughly care about snooping and if any
  81          * multicast is requested, we take every multicast
  82          */
  83         if (net->flags & IFF_PROMISC)
  84                 cdc_filter |= USB_CDC_PACKET_TYPE_PROMISCUOUS;
  85         if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI))
  86                 cdc_filter |= USB_CDC_PACKET_TYPE_ALL_MULTICAST;
  87
  88         usb_control_msg(dev->udev,
  89                         usb_sndctrlpipe(dev->udev, 0),
  90                         USB_CDC_SET_ETHERNET_PACKET_FILTER,
  91                         USB_TYPE_CLASS | USB_RECIP_INTERFACE,
  92                         cdc_filter,
  93                         intf->cur_altsetting->desc.bInterfaceNumber,
  94                         NULL,
  95                         0,
  96                         USB_CTRL_SET_TIMEOUT
  97                 );
  98 }
  99
 100 /* probes control interface, claims data interface, collects the bulk
 101  * endpoints, activates data interface (if needed), maybe sets MTU.
 102  * all pure cdc, except for certain firmware workarounds, and knowing
 103  * that rndis uses one different rule.
 104  */
 105 int usbnet_generic_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
 106 {
 107         u8                              *buf = intf->cur_altsetting->extra;
 108         int                             len = intf->cur_altsetting->extralen;
 109         struct usb_interface_descriptor *d;
 110         struct cdc_state                *info = (void *) &dev->data;
 111         int                             status;
 112         int                             rndis;
 113         bool                            android_rndis_quirk = false;
 114         struct usb_driver               *driver = driver_of(intf);
 115         struct usb_cdc_mdlm_desc        *desc = NULL;
 116         struct usb_cdc_mdlm_detail_desc *detail = NULL;
 117
 118         if (sizeof(dev->data) < sizeof(*info))
 119                 return -EDOM;
 120
 121         /* expect strict spec conformance for the descriptors, but
 122          * cope with firmware which stores them in the wrong place
 123          */
 124         if (len == 0 && dev->udev->actconfig->extralen) {
 125                 /* Motorola SB4100 (and others: Brad Hards says it's
 126                  * from a Broadcom design) put CDC descriptors here
 127                  */
 128                 buf = dev->udev->actconfig->extra;
 129                 len = dev->udev->actconfig->extralen;
 130                 dev_dbg(&intf->dev, "CDC descriptors on config\n");
 131         }
 132
 133         /* Maybe CDC descriptors are after the endpoint?  This bug has
 134          * been seen on some 2Wire Inc RNDIS-ish products.
 135          */
 136         if (len == 0) {
 137                 struct usb_host_endpoint        *hep;
 138
 139                 hep = intf->cur_altsetting->endpoint;
 140                 if (hep) {
 141                         buf = hep->extra;
 142                         len = hep->extralen;
 143                 }
 144                 if (len)
 145                         dev_dbg(&intf->dev,
 146                                 "CDC descriptors on endpoint\n");
 147         }
 148
 149         /* this assumes that if there's a non-RNDIS vendor variant
 150          * of cdc-acm, it'll fail RNDIS requests cleanly.
 151          */
 152         rndis = (is_rndis(&intf->cur_altsetting->desc) ||
 153                  is_activesync(&intf->cur_altsetting->desc) ||
 154                  is_wireless_rndis(&intf->cur_altsetting->desc));
 155
 156         memset(info, 0, sizeof(*info));
 157         info->control = intf;
 158         while (len > 3) {
 159                 if (buf[1] != USB_DT_CS_INTERFACE)
 160                         goto next_desc;
 161
 162                 /* use bDescriptorSubType to identify the CDC descriptors.
 163                  * We expect devices with CDC header and union descriptors.
 164                  * For CDC Ethernet we need the ethernet descriptor.
 165                  * For RNDIS, ignore two (pointless) CDC modem descriptors
 166                  * in favor of a complicated OID-based RPC scheme doing what
 167                  * CDC Ethernet achieves with a simple descriptor.
 168                  */
 169                 switch (buf[2]) {
 170                 case USB_CDC_HEADER_TYPE:
 171                         if (info->header) {
 172                                 dev_dbg(&intf->dev, "extra CDC header\n");
 173                                 goto bad_desc;
 174                         }
 175                         info->header = (void *) buf;
 176                         if (info->header->bLength != sizeof(*info->header)) {
 177                                 dev_dbg(&intf->dev, "CDC header len %u\n",
 178                                         info->header->bLength);
 179                                 goto bad_desc;
 180                         }
 181                         break;
 182                 case USB_CDC_ACM_TYPE:
 183                         /* paranoia:  disambiguate a "real" vendor-specific
 184                          * modem interface from an RNDIS non-modem.
 185                          */
 186                         if (rndis) {
 187                                 struct usb_cdc_acm_descriptor *acm;
 188
 189                                 acm = (void *) buf;
 190                                 if (acm->bmCapabilities) {
 191                                         dev_dbg(&intf->dev,
 192                                                 "ACM capabilities %02x, "
 193                                                 "not really RNDIS?\n",
 194                                                 acm->bmCapabilities);
 195                                         goto bad_desc;
 196                                 }
 197                         }
 198                         break;
 199                 case USB_CDC_UNION_TYPE:
 200                         if (info->u) {
 201                                 dev_dbg(&intf->dev, "extra CDC union\n");
 202                                 goto bad_desc;
 203                         }
 204                         info->u = (void *) buf;
 205                         if (info->u->bLength != sizeof(*info->u)) {
 206                                 dev_dbg(&intf->dev, "CDC union len %u\n",
 207                                         info->u->bLength);
 208                                 goto bad_desc;
 209                         }
 210
 211                         /* we need a master/control interface (what we're
 212                          * probed with) and a slave/data interface; union
 213                          * descriptors sort this all out.
 214                          */
 215                         info->control = usb_ifnum_to_if(dev->udev,
 216                                                 info->u->bMasterInterface0);
 217                         info->data = usb_ifnum_to_if(dev->udev,
 218                                                 info->u->bSlaveInterface0);
 219                         if (!info->control || !info->data) {
 220                                 dev_dbg(&intf->dev,
 221                                         "master #%u/%p slave #%u/%p\n",
 222                                         info->u->bMasterInterface0,
 223                                         info->control,
 224                                         info->u->bSlaveInterface0,
 225                                         info->data);
 226                                 /* fall back to hard-wiring for RNDIS */
 227                                 if (rndis) {
 228                                         android_rndis_quirk = true;
 229                                         goto next_desc;
 230                                 }
 231                                 goto bad_desc;
 232                         }
 233                         if (info->control != intf) {
 234                                 dev_dbg(&intf->dev, "bogus CDC Union\n");
 235                                 /* Ambit USB Cable Modem (and maybe others)
 236                                  * interchanges master and slave interface.
 237                                  */
 238                                 if (info->data == intf) {
 239                                         info->data = info->control;
 240                                         info->control = intf;
 241                                 } else
 242                                         goto bad_desc;
 243                         }
 244
 245                         /* some devices merge these - skip class check */
 246                         if (info->control == info->data)
 247                                 goto next_desc;
 248
 249                         /* a data interface altsetting does the real i/o */
 250                         d = &info->data->cur_altsetting->desc;
 251                         if (d->bInterfaceClass != USB_CLASS_CDC_DATA) {
 252                                 dev_dbg(&intf->dev, "slave class %u\n",
 253                                         d->bInterfaceClass);
 254                                 goto bad_desc;
 255                         }
 256                         break;
 257                 case USB_CDC_ETHERNET_TYPE:
 258                         if (info->ether) {
 259                                 dev_dbg(&intf->dev, "extra CDC ether\n");
 260                                 goto bad_desc;
 261                         }
 262                         info->ether = (void *) buf;
 263                         if (info->ether->bLength != sizeof(*info->ether)) {
 264                                 dev_dbg(&intf->dev, "CDC ether len %u\n",
 265                                         info->ether->bLength);
 266                                 goto bad_desc;
 267                         }
 268                         dev->hard_mtu = le16_to_cpu(
 269                                                 info->ether->wMaxSegmentSize);
 270                         /* because of Zaurus, we may be ignoring the host
 271                          * side link address we were given.
 272                          */
 273                         break;
 274                 case USB_CDC_MDLM_TYPE:
 275                         if (desc) {
 276                                 dev_dbg(&intf->dev, "extra MDLM descriptor\n");
 277                                 goto bad_desc;
 278                         }
 279
 280                         desc = (void *)buf;
 281
 282                         if (desc->bLength != sizeof(*desc))
 283                                 goto bad_desc;
 284
 285                         if (memcmp(&desc->bGUID, mbm_guid, 16))
 286                                 goto bad_desc;
 287                         break;
 288                 case USB_CDC_MDLM_DETAIL_TYPE:
 289                         if (detail) {
 290                                 dev_dbg(&intf->dev, "extra MDLM detail descriptor\n");
 291                                 goto bad_desc;
 292                         }
 293
 294                         detail = (void *)buf;
 295
 296                         if (detail->bGuidDescriptorType == 0) {
 297                                 if (detail->bLength < (sizeof(*detail) + 1))
 298                                         goto bad_desc;
 299                         } else
 300                                 goto bad_desc;
 301                         break;
 302                 }
 303 next_desc:
 304                 len -= buf[0];  /* bLength */
 305                 buf += buf[0];
 306         }
 307
 308         /* Microsoft ActiveSync based and some regular RNDIS devices lack the
 309          * CDC descriptors, so we'll hard-wire the interfaces and not check
 310          * for descriptors.
 311          *
 312          * Some Android RNDIS devices have a CDC Union descriptor pointing
 313          * to non-existing interfaces.  Ignore that and attempt the same
 314          * hard-wired 0 and 1 interfaces.
 315          */
 316         if (rndis && (!info->u || android_rndis_quirk)) {
 317                 info->control = usb_ifnum_to_if(dev->udev, 0);
 318                 info->data = usb_ifnum_to_if(dev->udev, 1);
 319                 if (!info->control || !info->data || info->control != intf) {
 320                         dev_dbg(&intf->dev,
 321                                 "rndis: master #0/%p slave #1/%p\n",
 322                                 info->control,
 323                                 info->data);
 324                         goto bad_desc;
 325                 }
 326
 327         } else if (!info->header || !info->u || (!rndis && !info->ether)) {
 328                 dev_dbg(&intf->dev, "missing cdc %s%s%sdescriptor\n",
 329                         info->header ? "" : "header ",
 330                         info->u ? "" : "union ",
 331                         info->ether ? "" : "ether ");
 332                 goto bad_desc;
 333         }
 334
 335         /* claim data interface and set it up ... with side effects.
 336          * network traffic can't flow until an altsetting is enabled.
 337          */
 338         if (info->data != info->control) {
 339                 status = usb_driver_claim_interface(driver, info->data, dev);
 340                 if (status < 0)
 341                         return status;
 342         }
 343         status = usbnet_get_endpoints(dev, info->data);
 344         if (status < 0) {
 345                 /* ensure immediate exit from usbnet_disconnect */
 346                 usb_set_intfdata(info->data, NULL);
 347                 if (info->data != info->control)
 348                         usb_driver_release_interface(driver, info->data);
 349                 return status;
 350         }
 351
 352         /* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */
 353         if (info->data != info->control)
 354                 dev->status = NULL;
 355         if (info->control->cur_altsetting->desc.bNumEndpoints == 1) {
 356                 struct usb_endpoint_descriptor  *desc;
 357
 358                 dev->status = &info->control->cur_altsetting->endpoint [0];
 359                 desc = &dev->status->desc;
 360                 if (!usb_endpoint_is_int_in(desc) ||
 361                     (le16_to_cpu(desc->wMaxPacketSize)
 362                      < sizeof(struct usb_cdc_notification)) ||
 363                     !desc->bInterval) {
 364                         dev_dbg(&intf->dev, "bad notification endpoint\n");
 365                         dev->status = NULL;
 366                 }
 367         }
 368         if (rndis && !dev->status) {
 369                 dev_dbg(&intf->dev, "missing RNDIS status endpoint\n");
 370                 usb_set_intfdata(info->data, NULL);
 371                 usb_driver_release_interface(driver, info->data);
 372                 return -ENODEV;
 373         }
 374
 375         /* Some devices don't initialise properly. In particular
 376          * the packet filter is not reset. There are devices that
 377          * don't do reset all the way. So the packet filter should
 378          * be set to a sane initial value.
 379          */
 380         usbnet_cdc_update_filter(dev);
 381
 382         return 0;
 383
 384 bad_desc:
 385         dev_info(&dev->udev->dev, "bad CDC descriptors\n");
 386         return -ENODEV;
 387 }
 388 EXPORT_SYMBOL_GPL(usbnet_generic_cdc_bind);
 389
 390 void usbnet_cdc_unbind(struct usbnet *dev, struct usb_interface *intf)
 391 {
 392         struct cdc_state                *info = (void *) &dev->data;
 393         struct usb_driver               *driver = driver_of(intf);
 394
 395         /* combined interface - nothing  to do */
 396         if (info->data == info->control)
 397                 return;
 398
 399         /* disconnect master --> disconnect slave */
 400         if (intf == info->control && info->data) {
 401                 /* ensure immediate exit from usbnet_disconnect */
 402                 usb_set_intfdata(info->data, NULL);
 403                 usb_driver_release_interface(driver, info->data);
 404                 info->data = NULL;
 405         }
 406
 407         /* and vice versa (just in case) */
 408         else if (intf == info->data && info->control) {
 409                 /* ensure immediate exit from usbnet_disconnect */
 410                 usb_set_intfdata(info->control, NULL);
 411                 usb_driver_release_interface(driver, info->control);
 412                 info->control = NULL;
 413         }
 414 }
 415 EXPORT_SYMBOL_GPL(usbnet_cdc_unbind);
 416
 417 /* Communications Device Class, Ethernet Control model
 418  *
 419  * Takes two interfaces.  The DATA interface is inactive till an altsetting
 420  * is selected.  Configuration data includes class descriptors.  There's
 421  * an optional status endpoint on the control interface.
 422  *
 423  * This should interop with whatever the 2.4 "CDCEther.c" driver
 424  * (by Brad Hards) talked with, with more functionality.
 425  */
 426
 427 static void dumpspeed(struct usbnet *dev, __le32 *speeds)
 428 {
 429         netif_info(dev, timer, dev->net,
 430                    "link speeds: %u kbps up, %u kbps down\n",
 431                    __le32_to_cpu(speeds[0]) / 1000,
 432                    __le32_to_cpu(speeds[1]) / 1000);
 433 }
 434
 435 void usbnet_cdc_status(struct usbnet *dev, struct urb *urb)
 436 {
 437         struct usb_cdc_notification     *event;
 438
 439         if (urb->actual_length < sizeof(*event))
 440                 return;
 441
 442         /* SPEED_CHANGE can get split into two 8-byte packets */
 443         if (test_and_clear_bit(EVENT_STS_SPLIT, &dev->flags)) {
 444                 dumpspeed(dev, (__le32 *) urb->transfer_buffer);
 445                 return;
 446         }
 447
 448         event = urb->transfer_buffer;
 449         switch (event->bNotificationType) {
 450         case USB_CDC_NOTIFY_NETWORK_CONNECTION:
 451                 netif_dbg(dev, timer, dev->net, "CDC: carrier %s\n",
 452                           event->wValue ? "on" : "off");
 453                 usbnet_link_change(dev, !!event->wValue, 0);
 454                 break;
 455         case USB_CDC_NOTIFY_SPEED_CHANGE:       /* tx/rx rates */
 456                 netif_dbg(dev, timer, dev->net, "CDC: speed change (len %d)\n",
 457                           urb->actual_length);
 458                 if (urb->actual_length != (sizeof(*event) + 8))
 459                         set_bit(EVENT_STS_SPLIT, &dev->flags);
 460                 else
 461                         dumpspeed(dev, (__le32 *) &event[1]);
 462                 break;
 463         /* USB_CDC_NOTIFY_RESPONSE_AVAILABLE can happen too (e.g. RNDIS),
 464          * but there are no standard formats for the response data.
 465          */
 466         default:
 467                 netdev_err(dev->net, "CDC: unexpected notification %02x!\n",
 468                            event->bNotificationType);
 469                 break;
 470         }
 471 }
 472 EXPORT_SYMBOL_GPL(usbnet_cdc_status);
 473
 474 int usbnet_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
 475 {
 476         int                             status;
 477         struct cdc_state                *info = (void *) &dev->data;
 478
 479         BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data)
 480                         < sizeof(struct cdc_state)));
 481
 482         status = usbnet_generic_cdc_bind(dev, intf);
 483         if (status < 0)
 484                 return status;
 485
 486         status = usbnet_get_ethernet_addr(dev, info->ether->iMACAddress);
 487         if (status < 0) {
 488                 usb_set_intfdata(info->data, NULL);
 489                 usb_driver_release_interface(driver_of(intf), info->data);
 490                 return status;
 491         }
 492
 493         return 0;
 494 }
 495 EXPORT_SYMBOL_GPL(usbnet_cdc_bind);
 496
 497 static const struct driver_info cdc_info = {
 498         .description =  "CDC Ethernet Device",
 499         .flags =        FLAG_ETHER | FLAG_POINTTOPOINT,
 500         .bind =         usbnet_cdc_bind,
 501         .unbind =       usbnet_cdc_unbind,
 502         .status =       usbnet_cdc_status,
 503         .set_rx_mode =  usbnet_cdc_update_filter,
 504         .manage_power = usbnet_manage_power,
 505 };
 506
 507 static const struct driver_info wwan_info = {
 508         .description =  "Mobile Broadband Network Device",
 509         .flags =        FLAG_WWAN,
 510         .bind =         usbnet_cdc_bind,
 511         .unbind =       usbnet_cdc_unbind,
 512         .status =       usbnet_cdc_status,
 513         .set_rx_mode =  usbnet_cdc_update_filter,
 514         .manage_power = usbnet_manage_power,
 515 };
 516
 517 /*-------------------------------------------------------------------------*/
 518
 519 #define HUAWEI_VENDOR_ID        0x12D1
 520 #define NOVATEL_VENDOR_ID       0x1410
 521 #define ZTE_VENDOR_ID           0x19D2
 522 #define DELL_VENDOR_ID          0x413C
 523 #define REALTEK_VENDOR_ID       0x0bda
 524 #define SAMSUNG_VENDOR_ID       0x04e8
 525 #define LENOVO_VENDOR_ID        0x17ef
 526
 527 static const struct usb_device_id       products[] = {
 528 /* BLACKLIST !!
 529  *
 530  * First blacklist any products that are egregiously nonconformant
 531  * with the CDC Ethernet specs.  Minor braindamage we cope with; when
 532  * they're not even trying, needing a separate driver is only the first
 533  * of the differences to show up.
 534  */
 535
 536 #define ZAURUS_MASTER_INTERFACE \
 537         .bInterfaceClass        = USB_CLASS_COMM, \
 538         .bInterfaceSubClass     = USB_CDC_SUBCLASS_ETHERNET, \
 539         .bInterfaceProtocol     = USB_CDC_PROTO_NONE
 540
 541 /* SA-1100 based Sharp Zaurus ("collie"), or compatible;
 542  * wire-incompatible with true CDC Ethernet implementations.
 543  * (And, it seems, needlessly so...)
 544  */
 545 {
 546         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 547                           | USB_DEVICE_ID_MATCH_DEVICE,
 548         .idVendor               = 0x04DD,
 549         .idProduct              = 0x8004,
 550         ZAURUS_MASTER_INTERFACE,
 551         .driver_info            = 0,
 552 },
 553
 554 /* PXA-25x based Sharp Zaurii.  Note that it seems some of these
 555  * (later models especially) may have shipped only with firmware
 556  * advertising false "CDC MDLM" compatibility ... but we're not
 557  * clear which models did that, so for now let's assume the worst.
 558  */
 559 {
 560         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 561                           | USB_DEVICE_ID_MATCH_DEVICE,
 562         .idVendor               = 0x04DD,
 563         .idProduct              = 0x8005,       /* A-300 */
 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              = 0x8006,       /* B-500/SL-5600 */
 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         .idProduct              = 0x8007,       /* C-700 */
 578         ZAURUS_MASTER_INTERFACE,
 579         .driver_info            = 0,
 580 }, {
 581         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 582                  | USB_DEVICE_ID_MATCH_DEVICE,
 583         .idVendor               = 0x04DD,
 584         .idProduct              = 0x9031,       /* C-750 C-760 */
 585         ZAURUS_MASTER_INTERFACE,
 586         .driver_info            = 0,
 587 }, {
 588         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 589                  | USB_DEVICE_ID_MATCH_DEVICE,
 590         .idVendor               = 0x04DD,
 591         .idProduct              = 0x9032,       /* SL-6000 */
 592         ZAURUS_MASTER_INTERFACE,
 593         .driver_info            = 0,
 594 }, {
 595         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 596                  | USB_DEVICE_ID_MATCH_DEVICE,
 597         .idVendor               = 0x04DD,
 598         /* reported with some C860 units */
 599         .idProduct              = 0x9050,       /* C-860 */
 600         ZAURUS_MASTER_INTERFACE,
 601         .driver_info            = 0,
 602 },
 603
 604 /* Olympus has some models with a Zaurus-compatible option.
 605  * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
 606  */
 607 {
 608         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 609                  | USB_DEVICE_ID_MATCH_DEVICE,
 610         .idVendor               = 0x07B4,
 611         .idProduct              = 0x0F02,       /* R-1000 */
 612         ZAURUS_MASTER_INTERFACE,
 613         .driver_info            = 0,
 614 },
 615
 616 /* LG Electronics VL600 wants additional headers on every frame */
 617 {
 618         USB_DEVICE_AND_INTERFACE_INFO(0x1004, 0x61aa, USB_CLASS_COMM,
 619                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 620         .driver_info = 0,
 621 },
 622
 623 /* Logitech Harmony 900 - uses the pseudo-MDLM (BLAN) driver */
 624 {
 625         USB_DEVICE_AND_INTERFACE_INFO(0x046d, 0xc11f, USB_CLASS_COMM,
 626                         USB_CDC_SUBCLASS_MDLM, USB_CDC_PROTO_NONE),
 627         .driver_info            = 0,
 628 },
 629
 630 /* Novatel USB551L and MC551 - handled by qmi_wwan */
 631 {
 632         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0xB001, USB_CLASS_COMM,
 633                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 634         .driver_info = 0,
 635 },
 636
 637 /* Novatel E362 - handled by qmi_wwan */
 638 {
 639         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9010, USB_CLASS_COMM,
 640                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 641         .driver_info = 0,
 642 },
 643
 644 /* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
 645 {
 646         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8195, USB_CLASS_COMM,
 647                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 648         .driver_info = 0,
 649 },
 650
 651 /* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
 652 {
 653         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8196, USB_CLASS_COMM,
 654                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 655         .driver_info = 0,
 656 },
 657
 658 /* Dell Wireless 5804 (Novatel E371) - handled by qmi_wwan */
 659 {
 660         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x819b, USB_CLASS_COMM,
 661                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 662         .driver_info = 0,
 663 },
 664
 665 /* Novatel Expedite E371 - handled by qmi_wwan */
 666 {
 667         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9011, USB_CLASS_COMM,
 668                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 669         .driver_info = 0,
 670 },
 671
 672 /* AnyDATA ADU960S - handled by qmi_wwan */
 673 {
 674         USB_DEVICE_AND_INTERFACE_INFO(0x16d5, 0x650a, USB_CLASS_COMM,
 675                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 676         .driver_info = 0,
 677 },
 678
 679 /* Huawei E1820 - handled by qmi_wwan */
 680 {
 681         USB_DEVICE_INTERFACE_NUMBER(HUAWEI_VENDOR_ID, 0x14ac, 1),
 682         .driver_info = 0,
 683 },
 684
 685 /* Realtek RTL8152 Based USB 2.0 Ethernet Adapters */
 686 {
 687         USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8152, USB_CLASS_COMM,
 688                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 689         .driver_info = 0,
 690 },
 691
 692 /* Realtek RTL8153 Based USB 3.0 Ethernet Adapters */
 693 {
 694         USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8153, USB_CLASS_COMM,
 695                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 696         .driver_info = 0,
 697 },
 698
 699 /* Samsung USB Ethernet Adapters */
 700 {
 701         USB_DEVICE_AND_INTERFACE_INFO(SAMSUNG_VENDOR_ID, 0xa101, USB_CLASS_COMM,
 702                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 703         .driver_info = 0,
 704 },
 705
 706 /* Lenovo Thinkpad USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */
 707 {
 708         USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x7205, USB_CLASS_COMM,
 709                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 710         .driver_info = 0,
 711 },
 712
 713 /* WHITELIST!!!
 714  *
 715  * CDC Ether uses two interfaces, not necessarily consecutive.
 716  * We match the main interface, ignoring the optional device
 717  * class so we could handle devices that aren't exclusively
 718  * CDC ether.
 719  *
 720  * NOTE:  this match must come AFTER entries blacklisting devices
 721  * because of bugs/quirks in a given product (like Zaurus, above).
 722  */
 723 {
 724         /* ZTE (Vodafone) K3805-Z */
 725         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1003, USB_CLASS_COMM,
 726                                       USB_CDC_SUBCLASS_ETHERNET,
 727                                       USB_CDC_PROTO_NONE),
 728         .driver_info = (unsigned long)&wwan_info,
 729 }, {
 730         /* ZTE (Vodafone) K3806-Z */
 731         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1015, USB_CLASS_COMM,
 732                                       USB_CDC_SUBCLASS_ETHERNET,
 733                                       USB_CDC_PROTO_NONE),
 734         .driver_info = (unsigned long)&wwan_info,
 735 }, {
 736         /* ZTE (Vodafone) K4510-Z */
 737         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1173, USB_CLASS_COMM,
 738                                       USB_CDC_SUBCLASS_ETHERNET,
 739                                       USB_CDC_PROTO_NONE),
 740         .driver_info = (unsigned long)&wwan_info,
 741 }, {
 742         /* ZTE (Vodafone) K3770-Z */
 743         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1177, USB_CLASS_COMM,
 744                                       USB_CDC_SUBCLASS_ETHERNET,
 745                                       USB_CDC_PROTO_NONE),
 746         .driver_info = (unsigned long)&wwan_info,
 747 }, {
 748         /* ZTE (Vodafone) K3772-Z */
 749         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1181, USB_CLASS_COMM,
 750                                       USB_CDC_SUBCLASS_ETHERNET,
 751                                       USB_CDC_PROTO_NONE),
 752         .driver_info = (unsigned long)&wwan_info,
 753 }, {
 754         /* Telit modules */
 755         USB_VENDOR_AND_INTERFACE_INFO(0x1bc7, USB_CLASS_COMM,
 756                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 757         .driver_info = (kernel_ulong_t) &wwan_info,
 758 }, {
 759         USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
 760                         USB_CDC_PROTO_NONE),
 761         .driver_info = (unsigned long) &cdc_info,
 762 }, {
 763         USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
 764                         USB_CDC_PROTO_NONE),
 765         .driver_info = (unsigned long)&wwan_info,
 766
 767 }, {
 768         /* Various Huawei modems with a network port like the UMG1831 */
 769         USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_COMM,
 770                                       USB_CDC_SUBCLASS_ETHERNET, 255),
 771         .driver_info = (unsigned long)&wwan_info,
 772 },
 773         { },            /* END */
 774 };
 775 MODULE_DEVICE_TABLE(usb, products);
 776
 777 static struct usb_driver cdc_driver = {
 778         .name =         "cdc_ether",
 779         .id_table =     products,
 780         .probe =        usbnet_probe,
 781         .disconnect =   usbnet_disconnect,
 782         .suspend =      usbnet_suspend,
 783         .resume =       usbnet_resume,
 784         .reset_resume = usbnet_resume,
 785         .supports_autosuspend = 1,
 786         .disable_hub_initiated_lpm = 1,
 787 };
 788
 789 module_usb_driver(cdc_driver);
 790
 791 MODULE_AUTHOR("David Brownell");
 792 MODULE_DESCRIPTION("USB CDC Ethernet devices");
 793 MODULE_LICENSE("GPL");