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         return 0;
 345
 346 bad_desc:
 347         dev_info(&dev->udev->dev, "bad CDC descriptors\n");
 348         return -ENODEV;
 349 }
 350 EXPORT_SYMBOL_GPL(usbnet_generic_cdc_bind);
 351
 352 void usbnet_cdc_unbind(struct usbnet *dev, struct usb_interface *intf)
 353 {
 354         struct cdc_state                *info = (void *) &dev->data;
 355         struct usb_driver               *driver = driver_of(intf);
 356
 357         /* combined interface - nothing  to do */
 358         if (info->data == info->control)
 359                 return;
 360
 361         /* disconnect master --> disconnect slave */
 362         if (intf == info->control && info->data) {
 363                 /* ensure immediate exit from usbnet_disconnect */
 364                 usb_set_intfdata(info->data, NULL);
 365                 usb_driver_release_interface(driver, info->data);
 366                 info->data = NULL;
 367         }
 368
 369         /* and vice versa (just in case) */
 370         else if (intf == info->data && info->control) {
 371                 /* ensure immediate exit from usbnet_disconnect */
 372                 usb_set_intfdata(info->control, NULL);
 373                 usb_driver_release_interface(driver, info->control);
 374                 info->control = NULL;
 375         }
 376 }
 377 EXPORT_SYMBOL_GPL(usbnet_cdc_unbind);
 378
 379 /* Communications Device Class, Ethernet Control model
 380  *
 381  * Takes two interfaces.  The DATA interface is inactive till an altsetting
 382  * is selected.  Configuration data includes class descriptors.  There's
 383  * an optional status endpoint on the control interface.
 384  *
 385  * This should interop with whatever the 2.4 "CDCEther.c" driver
 386  * (by Brad Hards) talked with, with more functionality.
 387  */
 388
 389 static void dumpspeed(struct usbnet *dev, __le32 *speeds)
 390 {
 391         netif_info(dev, timer, dev->net,
 392                    "link speeds: %u kbps up, %u kbps down\n",
 393                    __le32_to_cpu(speeds[0]) / 1000,
 394                    __le32_to_cpu(speeds[1]) / 1000);
 395 }
 396
 397 void usbnet_cdc_status(struct usbnet *dev, struct urb *urb)
 398 {
 399         struct usb_cdc_notification     *event;
 400
 401         if (urb->actual_length < sizeof(*event))
 402                 return;
 403
 404         /* SPEED_CHANGE can get split into two 8-byte packets */
 405         if (test_and_clear_bit(EVENT_STS_SPLIT, &dev->flags)) {
 406                 dumpspeed(dev, (__le32 *) urb->transfer_buffer);
 407                 return;
 408         }
 409
 410         event = urb->transfer_buffer;
 411         switch (event->bNotificationType) {
 412         case USB_CDC_NOTIFY_NETWORK_CONNECTION:
 413                 netif_dbg(dev, timer, dev->net, "CDC: carrier %s\n",
 414                           event->wValue ? "on" : "off");
 415                 usbnet_link_change(dev, !!event->wValue, 0);
 416                 break;
 417         case USB_CDC_NOTIFY_SPEED_CHANGE:       /* tx/rx rates */
 418                 netif_dbg(dev, timer, dev->net, "CDC: speed change (len %d)\n",
 419                           urb->actual_length);
 420                 if (urb->actual_length != (sizeof(*event) + 8))
 421                         set_bit(EVENT_STS_SPLIT, &dev->flags);
 422                 else
 423                         dumpspeed(dev, (__le32 *) &event[1]);
 424                 break;
 425         /* USB_CDC_NOTIFY_RESPONSE_AVAILABLE can happen too (e.g. RNDIS),
 426          * but there are no standard formats for the response data.
 427          */
 428         default:
 429                 netdev_err(dev->net, "CDC: unexpected notification %02x!\n",
 430                            event->bNotificationType);
 431                 break;
 432         }
 433 }
 434 EXPORT_SYMBOL_GPL(usbnet_cdc_status);
 435
 436 int usbnet_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
 437 {
 438         int                             status;
 439         struct cdc_state                *info = (void *) &dev->data;
 440
 441         BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data)
 442                         < sizeof(struct cdc_state)));
 443
 444         status = usbnet_generic_cdc_bind(dev, intf);
 445         if (status < 0)
 446                 return status;
 447
 448         status = usbnet_get_ethernet_addr(dev, info->ether->iMACAddress);
 449         if (status < 0) {
 450                 usb_set_intfdata(info->data, NULL);
 451                 usb_driver_release_interface(driver_of(intf), info->data);
 452                 return status;
 453         }
 454
 455         /* FIXME cdc-ether has some multicast code too, though it complains
 456          * in routine cases.  info->ether describes the multicast support.
 457          * Implement that here, manipulating the cdc filter as needed.
 458          */
 459         return 0;
 460 }
 461 EXPORT_SYMBOL_GPL(usbnet_cdc_bind);
 462
 463 static const struct driver_info cdc_info = {
 464         .description =  "CDC Ethernet Device",
 465         .flags =        FLAG_ETHER | FLAG_POINTTOPOINT,
 466         .bind =         usbnet_cdc_bind,
 467         .unbind =       usbnet_cdc_unbind,
 468         .status =       usbnet_cdc_status,
 469         .manage_power = usbnet_manage_power,
 470 };
 471
 472 static const struct driver_info wwan_info = {
 473         .description =  "Mobile Broadband Network Device",
 474         .flags =        FLAG_WWAN,
 475         .bind =         usbnet_cdc_bind,
 476         .unbind =       usbnet_cdc_unbind,
 477         .status =       usbnet_cdc_status,
 478         .manage_power = usbnet_manage_power,
 479 };
 480
 481 /*-------------------------------------------------------------------------*/
 482
 483 #define HUAWEI_VENDOR_ID        0x12D1
 484 #define NOVATEL_VENDOR_ID       0x1410
 485 #define ZTE_VENDOR_ID           0x19D2
 486 #define DELL_VENDOR_ID          0x413C
 487 #define REALTEK_VENDOR_ID       0x0bda
 488 #define SAMSUNG_VENDOR_ID       0x04e8
 489
 490 static const struct usb_device_id       products[] = {
 491 /* BLACKLIST !!
 492  *
 493  * First blacklist any products that are egregiously nonconformant
 494  * with the CDC Ethernet specs.  Minor braindamage we cope with; when
 495  * they're not even trying, needing a separate driver is only the first
 496  * of the differences to show up.
 497  */
 498
 499 #define ZAURUS_MASTER_INTERFACE \
 500         .bInterfaceClass        = USB_CLASS_COMM, \
 501         .bInterfaceSubClass     = USB_CDC_SUBCLASS_ETHERNET, \
 502         .bInterfaceProtocol     = USB_CDC_PROTO_NONE
 503
 504 /* SA-1100 based Sharp Zaurus ("collie"), or compatible;
 505  * wire-incompatible with true CDC Ethernet implementations.
 506  * (And, it seems, needlessly so...)
 507  */
 508 {
 509         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 510                           | USB_DEVICE_ID_MATCH_DEVICE,
 511         .idVendor               = 0x04DD,
 512         .idProduct              = 0x8004,
 513         ZAURUS_MASTER_INTERFACE,
 514         .driver_info            = 0,
 515 },
 516
 517 /* PXA-25x based Sharp Zaurii.  Note that it seems some of these
 518  * (later models especially) may have shipped only with firmware
 519  * advertising false "CDC MDLM" compatibility ... but we're not
 520  * clear which models did that, so for now let's assume the worst.
 521  */
 522 {
 523         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 524                           | USB_DEVICE_ID_MATCH_DEVICE,
 525         .idVendor               = 0x04DD,
 526         .idProduct              = 0x8005,       /* A-300 */
 527         ZAURUS_MASTER_INTERFACE,
 528         .driver_info            = 0,
 529 }, {
 530         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 531                           | USB_DEVICE_ID_MATCH_DEVICE,
 532         .idVendor               = 0x04DD,
 533         .idProduct              = 0x8006,       /* B-500/SL-5600 */
 534         ZAURUS_MASTER_INTERFACE,
 535         .driver_info            = 0,
 536 }, {
 537         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 538                           | USB_DEVICE_ID_MATCH_DEVICE,
 539         .idVendor               = 0x04DD,
 540         .idProduct              = 0x8007,       /* C-700 */
 541         ZAURUS_MASTER_INTERFACE,
 542         .driver_info            = 0,
 543 }, {
 544         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 545                  | USB_DEVICE_ID_MATCH_DEVICE,
 546         .idVendor               = 0x04DD,
 547         .idProduct              = 0x9031,       /* C-750 C-760 */
 548         ZAURUS_MASTER_INTERFACE,
 549         .driver_info            = 0,
 550 }, {
 551         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 552                  | USB_DEVICE_ID_MATCH_DEVICE,
 553         .idVendor               = 0x04DD,
 554         .idProduct              = 0x9032,       /* SL-6000 */
 555         ZAURUS_MASTER_INTERFACE,
 556         .driver_info            = 0,
 557 }, {
 558         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 559                  | USB_DEVICE_ID_MATCH_DEVICE,
 560         .idVendor               = 0x04DD,
 561         /* reported with some C860 units */
 562         .idProduct              = 0x9050,       /* C-860 */
 563         ZAURUS_MASTER_INTERFACE,
 564         .driver_info            = 0,
 565 },
 566
 567 /* Olympus has some models with a Zaurus-compatible option.
 568  * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
 569  */
 570 {
 571         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 572                  | USB_DEVICE_ID_MATCH_DEVICE,
 573         .idVendor               = 0x07B4,
 574         .idProduct              = 0x0F02,       /* R-1000 */
 575         ZAURUS_MASTER_INTERFACE,
 576         .driver_info            = 0,
 577 },
 578
 579 /* LG Electronics VL600 wants additional headers on every frame */
 580 {
 581         USB_DEVICE_AND_INTERFACE_INFO(0x1004, 0x61aa, USB_CLASS_COMM,
 582                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 583         .driver_info = 0,
 584 },
 585
 586 /* Logitech Harmony 900 - uses the pseudo-MDLM (BLAN) driver */
 587 {
 588         USB_DEVICE_AND_INTERFACE_INFO(0x046d, 0xc11f, USB_CLASS_COMM,
 589                         USB_CDC_SUBCLASS_MDLM, USB_CDC_PROTO_NONE),
 590         .driver_info            = 0,
 591 },
 592
 593 /* Novatel USB551L and MC551 - handled by qmi_wwan */
 594 {
 595         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0xB001, USB_CLASS_COMM,
 596                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 597         .driver_info = 0,
 598 },
 599
 600 /* Novatel E362 - handled by qmi_wwan */
 601 {
 602         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9010, USB_CLASS_COMM,
 603                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 604         .driver_info = 0,
 605 },
 606
 607 /* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
 608 {
 609         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8195, USB_CLASS_COMM,
 610                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 611         .driver_info = 0,
 612 },
 613
 614 /* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
 615 {
 616         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8196, USB_CLASS_COMM,
 617                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 618         .driver_info = 0,
 619 },
 620
 621 /* Dell Wireless 5804 (Novatel E371) - handled by qmi_wwan */
 622 {
 623         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x819b, USB_CLASS_COMM,
 624                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 625         .driver_info = 0,
 626 },
 627
 628 /* AnyDATA ADU960S - handled by qmi_wwan */
 629 {
 630         USB_DEVICE_AND_INTERFACE_INFO(0x16d5, 0x650a, USB_CLASS_COMM,
 631                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 632         .driver_info = 0,
 633 },
 634
 635 /* Huawei E1820 - handled by qmi_wwan */
 636 {
 637         USB_DEVICE_INTERFACE_NUMBER(HUAWEI_VENDOR_ID, 0x14ac, 1),
 638         .driver_info = 0,
 639 },
 640
 641 /* Realtek RTL8152 Based USB 2.0 Ethernet Adapters */
 642 {
 643         USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8152, USB_CLASS_COMM,
 644                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 645         .driver_info = 0,
 646 },
 647
 648 /* Realtek RTL8153 Based USB 3.0 Ethernet Adapters */
 649 {
 650         USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8153, USB_CLASS_COMM,
 651                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 652         .driver_info = 0,
 653 },
 654
 655 /* WHITELIST!!!
 656  *
 657  * CDC Ether uses two interfaces, not necessarily consecutive.
 658  * We match the main interface, ignoring the optional device
 659  * class so we could handle devices that aren't exclusively
 660  * CDC ether.
 661  *
 662  * NOTE:  this match must come AFTER entries blacklisting devices
 663  * because of bugs/quirks in a given product (like Zaurus, above).
 664  */
 665 {
 666         /* ZTE (Vodafone) K3805-Z */
 667         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1003, USB_CLASS_COMM,
 668                                       USB_CDC_SUBCLASS_ETHERNET,
 669                                       USB_CDC_PROTO_NONE),
 670         .driver_info = (unsigned long)&wwan_info,
 671 }, {
 672         /* ZTE (Vodafone) K3806-Z */
 673         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1015, USB_CLASS_COMM,
 674                                       USB_CDC_SUBCLASS_ETHERNET,
 675                                       USB_CDC_PROTO_NONE),
 676         .driver_info = (unsigned long)&wwan_info,
 677 }, {
 678         /* ZTE (Vodafone) K4510-Z */
 679         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1173, USB_CLASS_COMM,
 680                                       USB_CDC_SUBCLASS_ETHERNET,
 681                                       USB_CDC_PROTO_NONE),
 682         .driver_info = (unsigned long)&wwan_info,
 683 }, {
 684         /* ZTE (Vodafone) K3770-Z */
 685         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1177, USB_CLASS_COMM,
 686                                       USB_CDC_SUBCLASS_ETHERNET,
 687                                       USB_CDC_PROTO_NONE),
 688         .driver_info = (unsigned long)&wwan_info,
 689 }, {
 690         /* ZTE (Vodafone) K3772-Z */
 691         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1181, USB_CLASS_COMM,
 692                                       USB_CDC_SUBCLASS_ETHERNET,
 693                                       USB_CDC_PROTO_NONE),
 694         .driver_info = (unsigned long)&wwan_info,
 695 }, {
 696         /* Telit modules */
 697         USB_VENDOR_AND_INTERFACE_INFO(0x1bc7, USB_CLASS_COMM,
 698                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 699         .driver_info = (kernel_ulong_t) &wwan_info,
 700 }, {
 701         USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
 702                         USB_CDC_PROTO_NONE),
 703         .driver_info = (unsigned long) &cdc_info,
 704 }, {
 705         USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
 706                         USB_CDC_PROTO_NONE),
 707         .driver_info = (unsigned long)&wwan_info,
 708
 709 }, {
 710         /* Various Huawei modems with a network port like the UMG1831 */
 711         USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_COMM,
 712                                       USB_CDC_SUBCLASS_ETHERNET, 255),
 713         .driver_info = (unsigned long)&wwan_info,
 714 },
 715         { },            /* END */
 716 };
 717 MODULE_DEVICE_TABLE(usb, products);
 718
 719 static struct usb_driver cdc_driver = {
 720         .name =         "cdc_ether",
 721         .id_table =     products,
 722         .probe =        usbnet_probe,
 723         .disconnect =   usbnet_disconnect,
 724         .suspend =      usbnet_suspend,
 725         .resume =       usbnet_resume,
 726         .reset_resume = usbnet_resume,
 727         .supports_autosuspend = 1,
 728         .disable_hub_initiated_lpm = 1,
 729 };
 730
 731 module_usb_driver(cdc_driver);
 732
 733 MODULE_AUTHOR("David Brownell");
 734 MODULE_DESCRIPTION("USB CDC Ethernet devices");
 735 MODULE_LICENSE("GPL");