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, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 // #define      DEBUG                   // error path messages, extra info
  22 // #define      VERBOSE                 // more; success messages
  23
  24 #include <linux/module.h>
  25 #include <linux/init.h>
  26 #include <linux/netdevice.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/ethtool.h>
  29 #include <linux/workqueue.h>
  30 #include <linux/mii.h>
  31 #include <linux/usb.h>
  32 #include <linux/usb/cdc.h>
  33 #include <linux/usb/usbnet.h>
  34
  35
  36 #if IS_ENABLED(CONFIG_USB_NET_RNDIS_HOST)
  37
  38 static int is_rndis(struct usb_interface_descriptor *desc)
  39 {
  40         return (desc->bInterfaceClass == USB_CLASS_COMM &&
  41                 desc->bInterfaceSubClass == 2 &&
  42                 desc->bInterfaceProtocol == 0xff);
  43 }
  44
  45 static int is_activesync(struct usb_interface_descriptor *desc)
  46 {
  47         return (desc->bInterfaceClass == USB_CLASS_MISC &&
  48                 desc->bInterfaceSubClass == 1 &&
  49                 desc->bInterfaceProtocol == 1);
  50 }
  51
  52 static int is_wireless_rndis(struct usb_interface_descriptor *desc)
  53 {
  54         return (desc->bInterfaceClass == USB_CLASS_WIRELESS_CONTROLLER &&
  55                 desc->bInterfaceSubClass == 1 &&
  56                 desc->bInterfaceProtocol == 3);
  57 }
  58
  59 #else
  60
  61 #define is_rndis(desc)          0
  62 #define is_activesync(desc)     0
  63 #define is_wireless_rndis(desc) 0
  64
  65 #endif
  66
  67 static const u8 mbm_guid[16] = {
  68         0xa3, 0x17, 0xa8, 0x8b, 0x04, 0x5e, 0x4f, 0x01,
  69         0xa6, 0x07, 0xc0, 0xff, 0xcb, 0x7e, 0x39, 0x2a,
  70 };
  71
  72 /* probes control interface, claims data interface, collects the bulk
  73  * endpoints, activates data interface (if needed), maybe sets MTU.
  74  * all pure cdc, except for certain firmware workarounds, and knowing
  75  * that rndis uses one different rule.
  76  */
  77 int usbnet_generic_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
  78 {
  79         u8                              *buf = intf->cur_altsetting->extra;
  80         int                             len = intf->cur_altsetting->extralen;
  81         struct usb_interface_descriptor *d;
  82         struct cdc_state                *info = (void *) &dev->data;
  83         int                             status;
  84         int                             rndis;
  85         bool                            android_rndis_quirk = false;
  86         struct usb_driver               *driver = driver_of(intf);
  87         struct usb_cdc_mdlm_desc        *desc = NULL;
  88         struct usb_cdc_mdlm_detail_desc *detail = NULL;
  89
  90         if (sizeof(dev->data) < sizeof(*info))
  91                 return -EDOM;
  92
  93         /* expect strict spec conformance for the descriptors, but
  94          * cope with firmware which stores them in the wrong place
  95          */
  96         if (len == 0 && dev->udev->actconfig->extralen) {
  97                 /* Motorola SB4100 (and others: Brad Hards says it's
  98                  * from a Broadcom design) put CDC descriptors here
  99                  */
 100                 buf = dev->udev->actconfig->extra;
 101                 len = dev->udev->actconfig->extralen;
 102                 dev_dbg(&intf->dev, "CDC descriptors on config\n");
 103         }
 104
 105         /* Maybe CDC descriptors are after the endpoint?  This bug has
 106          * been seen on some 2Wire Inc RNDIS-ish products.
 107          */
 108         if (len == 0) {
 109                 struct usb_host_endpoint        *hep;
 110
 111                 hep = intf->cur_altsetting->endpoint;
 112                 if (hep) {
 113                         buf = hep->extra;
 114                         len = hep->extralen;
 115                 }
 116                 if (len)
 117                         dev_dbg(&intf->dev,
 118                                 "CDC descriptors on endpoint\n");
 119         }
 120
 121         /* this assumes that if there's a non-RNDIS vendor variant
 122          * of cdc-acm, it'll fail RNDIS requests cleanly.
 123          */
 124         rndis = (is_rndis(&intf->cur_altsetting->desc) ||
 125                  is_activesync(&intf->cur_altsetting->desc) ||
 126                  is_wireless_rndis(&intf->cur_altsetting->desc));
 127
 128         memset(info, 0, sizeof(*info));
 129         info->control = intf;
 130         while (len > 3) {
 131                 if (buf[1] != USB_DT_CS_INTERFACE)
 132                         goto next_desc;
 133
 134                 /* use bDescriptorSubType to identify the CDC descriptors.
 135                  * We expect devices with CDC header and union descriptors.
 136                  * For CDC Ethernet we need the ethernet descriptor.
 137                  * For RNDIS, ignore two (pointless) CDC modem descriptors
 138                  * in favor of a complicated OID-based RPC scheme doing what
 139                  * CDC Ethernet achieves with a simple descriptor.
 140                  */
 141                 switch (buf[2]) {
 142                 case USB_CDC_HEADER_TYPE:
 143                         if (info->header) {
 144                                 dev_dbg(&intf->dev, "extra CDC header\n");
 145                                 goto bad_desc;
 146                         }
 147                         info->header = (void *) buf;
 148                         if (info->header->bLength != sizeof(*info->header)) {
 149                                 dev_dbg(&intf->dev, "CDC header len %u\n",
 150                                         info->header->bLength);
 151                                 goto bad_desc;
 152                         }
 153                         break;
 154                 case USB_CDC_ACM_TYPE:
 155                         /* paranoia:  disambiguate a "real" vendor-specific
 156                          * modem interface from an RNDIS non-modem.
 157                          */
 158                         if (rndis) {
 159                                 struct usb_cdc_acm_descriptor *acm;
 160
 161                                 acm = (void *) buf;
 162                                 if (acm->bmCapabilities) {
 163                                         dev_dbg(&intf->dev,
 164                                                 "ACM capabilities %02x, "
 165                                                 "not really RNDIS?\n",
 166                                                 acm->bmCapabilities);
 167                                         goto bad_desc;
 168                                 }
 169                         }
 170                         break;
 171                 case USB_CDC_UNION_TYPE:
 172                         if (info->u) {
 173                                 dev_dbg(&intf->dev, "extra CDC union\n");
 174                                 goto bad_desc;
 175                         }
 176                         info->u = (void *) buf;
 177                         if (info->u->bLength != sizeof(*info->u)) {
 178                                 dev_dbg(&intf->dev, "CDC union len %u\n",
 179                                         info->u->bLength);
 180                                 goto bad_desc;
 181                         }
 182
 183                         /* we need a master/control interface (what we're
 184                          * probed with) and a slave/data interface; union
 185                          * descriptors sort this all out.
 186                          */
 187                         info->control = usb_ifnum_to_if(dev->udev,
 188                                                 info->u->bMasterInterface0);
 189                         info->data = usb_ifnum_to_if(dev->udev,
 190                                                 info->u->bSlaveInterface0);
 191                         if (!info->control || !info->data) {
 192                                 dev_dbg(&intf->dev,
 193                                         "master #%u/%p slave #%u/%p\n",
 194                                         info->u->bMasterInterface0,
 195                                         info->control,
 196                                         info->u->bSlaveInterface0,
 197                                         info->data);
 198                                 /* fall back to hard-wiring for RNDIS */
 199                                 if (rndis) {
 200                                         android_rndis_quirk = true;
 201                                         goto next_desc;
 202                                 }
 203                                 goto bad_desc;
 204                         }
 205                         if (info->control != intf) {
 206                                 dev_dbg(&intf->dev, "bogus CDC Union\n");
 207                                 /* Ambit USB Cable Modem (and maybe others)
 208                                  * interchanges master and slave interface.
 209                                  */
 210                                 if (info->data == intf) {
 211                                         info->data = info->control;
 212                                         info->control = intf;
 213                                 } else
 214                                         goto bad_desc;
 215                         }
 216
 217                         /* some devices merge these - skip class check */
 218                         if (info->control == info->data)
 219                                 goto next_desc;
 220
 221                         /* a data interface altsetting does the real i/o */
 222                         d = &info->data->cur_altsetting->desc;
 223                         if (d->bInterfaceClass != USB_CLASS_CDC_DATA) {
 224                                 dev_dbg(&intf->dev, "slave class %u\n",
 225                                         d->bInterfaceClass);
 226                                 goto bad_desc;
 227                         }
 228                         break;
 229                 case USB_CDC_ETHERNET_TYPE:
 230                         if (info->ether) {
 231                                 dev_dbg(&intf->dev, "extra CDC ether\n");
 232                                 goto bad_desc;
 233                         }
 234                         info->ether = (void *) buf;
 235                         if (info->ether->bLength != sizeof(*info->ether)) {
 236                                 dev_dbg(&intf->dev, "CDC ether len %u\n",
 237                                         info->ether->bLength);
 238                                 goto bad_desc;
 239                         }
 240                         dev->hard_mtu = le16_to_cpu(
 241                                                 info->ether->wMaxSegmentSize);
 242                         /* because of Zaurus, we may be ignoring the host
 243                          * side link address we were given.
 244                          */
 245                         break;
 246                 case USB_CDC_MDLM_TYPE:
 247                         if (desc) {
 248                                 dev_dbg(&intf->dev, "extra MDLM descriptor\n");
 249                                 goto bad_desc;
 250                         }
 251
 252                         desc = (void *)buf;
 253
 254                         if (desc->bLength != sizeof(*desc))
 255                                 goto bad_desc;
 256
 257                         if (memcmp(&desc->bGUID, mbm_guid, 16))
 258                                 goto bad_desc;
 259                         break;
 260                 case USB_CDC_MDLM_DETAIL_TYPE:
 261                         if (detail) {
 262                                 dev_dbg(&intf->dev, "extra MDLM detail descriptor\n");
 263                                 goto bad_desc;
 264                         }
 265
 266                         detail = (void *)buf;
 267
 268                         if (detail->bGuidDescriptorType == 0) {
 269                                 if (detail->bLength < (sizeof(*detail) + 1))
 270                                         goto bad_desc;
 271                         } else
 272                                 goto bad_desc;
 273                         break;
 274                 }
 275 next_desc:
 276                 len -= buf[0];  /* bLength */
 277                 buf += buf[0];
 278         }
 279
 280         /* Microsoft ActiveSync based and some regular RNDIS devices lack the
 281          * CDC descriptors, so we'll hard-wire the interfaces and not check
 282          * for descriptors.
 283          *
 284          * Some Android RNDIS devices have a CDC Union descriptor pointing
 285          * to non-existing interfaces.  Ignore that and attempt the same
 286          * hard-wired 0 and 1 interfaces.
 287          */
 288         if (rndis && (!info->u || android_rndis_quirk)) {
 289                 info->control = usb_ifnum_to_if(dev->udev, 0);
 290                 info->data = usb_ifnum_to_if(dev->udev, 1);
 291                 if (!info->control || !info->data || info->control != intf) {
 292                         dev_dbg(&intf->dev,
 293                                 "rndis: master #0/%p slave #1/%p\n",
 294                                 info->control,
 295                                 info->data);
 296                         goto bad_desc;
 297                 }
 298
 299         } else if (!info->header || !info->u || (!rndis && !info->ether)) {
 300                 dev_dbg(&intf->dev, "missing cdc %s%s%sdescriptor\n",
 301                         info->header ? "" : "header ",
 302                         info->u ? "" : "union ",
 303                         info->ether ? "" : "ether ");
 304                 goto bad_desc;
 305         }
 306
 307         /* claim data interface and set it up ... with side effects.
 308          * network traffic can't flow until an altsetting is enabled.
 309          */
 310         if (info->data != info->control) {
 311                 status = usb_driver_claim_interface(driver, info->data, dev);
 312                 if (status < 0)
 313                         return status;
 314         }
 315         status = usbnet_get_endpoints(dev, info->data);
 316         if (status < 0) {
 317                 /* ensure immediate exit from usbnet_disconnect */
 318                 usb_set_intfdata(info->data, NULL);
 319                 if (info->data != info->control)
 320                         usb_driver_release_interface(driver, info->data);
 321                 return status;
 322         }
 323
 324         /* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */
 325         if (info->data != info->control)
 326                 dev->status = NULL;
 327         if (info->control->cur_altsetting->desc.bNumEndpoints == 1) {
 328                 struct usb_endpoint_descriptor  *desc;
 329
 330                 dev->status = &info->control->cur_altsetting->endpoint [0];
 331                 desc = &dev->status->desc;
 332                 if (!usb_endpoint_is_int_in(desc) ||
 333                     (le16_to_cpu(desc->wMaxPacketSize)
 334                      < sizeof(struct usb_cdc_notification)) ||
 335                     !desc->bInterval) {
 336                         dev_dbg(&intf->dev, "bad notification endpoint\n");
 337                         dev->status = NULL;
 338                 }
 339         }
 340         if (rndis && !dev->status) {
 341                 dev_dbg(&intf->dev, "missing RNDIS status endpoint\n");
 342                 usb_set_intfdata(info->data, NULL);
 343                 usb_driver_release_interface(driver, info->data);
 344                 return -ENODEV;
 345         }
 346         return 0;
 347
 348 bad_desc:
 349         dev_info(&dev->udev->dev, "bad CDC descriptors\n");
 350         return -ENODEV;
 351 }
 352 EXPORT_SYMBOL_GPL(usbnet_generic_cdc_bind);
 353
 354 void usbnet_cdc_unbind(struct usbnet *dev, struct usb_interface *intf)
 355 {
 356         struct cdc_state                *info = (void *) &dev->data;
 357         struct usb_driver               *driver = driver_of(intf);
 358
 359         /* combined interface - nothing  to do */
 360         if (info->data == info->control)
 361                 return;
 362
 363         /* disconnect master --> disconnect slave */
 364         if (intf == info->control && info->data) {
 365                 /* ensure immediate exit from usbnet_disconnect */
 366                 usb_set_intfdata(info->data, NULL);
 367                 usb_driver_release_interface(driver, info->data);
 368                 info->data = NULL;
 369         }
 370
 371         /* and vice versa (just in case) */
 372         else if (intf == info->data && info->control) {
 373                 /* ensure immediate exit from usbnet_disconnect */
 374                 usb_set_intfdata(info->control, NULL);
 375                 usb_driver_release_interface(driver, info->control);
 376                 info->control = NULL;
 377         }
 378 }
 379 EXPORT_SYMBOL_GPL(usbnet_cdc_unbind);
 380
 381 /* Communications Device Class, Ethernet Control model
 382  *
 383  * Takes two interfaces.  The DATA interface is inactive till an altsetting
 384  * is selected.  Configuration data includes class descriptors.  There's
 385  * an optional status endpoint on the control interface.
 386  *
 387  * This should interop with whatever the 2.4 "CDCEther.c" driver
 388  * (by Brad Hards) talked with, with more functionality.
 389  */
 390
 391 static void dumpspeed(struct usbnet *dev, __le32 *speeds)
 392 {
 393         netif_info(dev, timer, dev->net,
 394                    "link speeds: %u kbps up, %u kbps down\n",
 395                    __le32_to_cpu(speeds[0]) / 1000,
 396                    __le32_to_cpu(speeds[1]) / 1000);
 397 }
 398
 399 void usbnet_cdc_status(struct usbnet *dev, struct urb *urb)
 400 {
 401         struct usb_cdc_notification     *event;
 402
 403         if (urb->actual_length < sizeof(*event))
 404                 return;
 405
 406         /* SPEED_CHANGE can get split into two 8-byte packets */
 407         if (test_and_clear_bit(EVENT_STS_SPLIT, &dev->flags)) {
 408                 dumpspeed(dev, (__le32 *) urb->transfer_buffer);
 409                 return;
 410         }
 411
 412         event = urb->transfer_buffer;
 413         switch (event->bNotificationType) {
 414         case USB_CDC_NOTIFY_NETWORK_CONNECTION:
 415                 netif_dbg(dev, timer, dev->net, "CDC: carrier %s\n",
 416                           event->wValue ? "on" : "off");
 417                 usbnet_link_change(dev, !!event->wValue, 0);
 418                 break;
 419         case USB_CDC_NOTIFY_SPEED_CHANGE:       /* tx/rx rates */
 420                 netif_dbg(dev, timer, dev->net, "CDC: speed change (len %d)\n",
 421                           urb->actual_length);
 422                 if (urb->actual_length != (sizeof(*event) + 8))
 423                         set_bit(EVENT_STS_SPLIT, &dev->flags);
 424                 else
 425                         dumpspeed(dev, (__le32 *) &event[1]);
 426                 break;
 427         /* USB_CDC_NOTIFY_RESPONSE_AVAILABLE can happen too (e.g. RNDIS),
 428          * but there are no standard formats for the response data.
 429          */
 430         default:
 431                 netdev_err(dev->net, "CDC: unexpected notification %02x!\n",
 432                            event->bNotificationType);
 433                 break;
 434         }
 435 }
 436 EXPORT_SYMBOL_GPL(usbnet_cdc_status);
 437
 438 int usbnet_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
 439 {
 440         int                             status;
 441         struct cdc_state                *info = (void *) &dev->data;
 442
 443         BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data)
 444                         < sizeof(struct cdc_state)));
 445
 446         status = usbnet_generic_cdc_bind(dev, intf);
 447         if (status < 0)
 448                 return status;
 449
 450         status = usbnet_get_ethernet_addr(dev, info->ether->iMACAddress);
 451         if (status < 0) {
 452                 usb_set_intfdata(info->data, NULL);
 453                 usb_driver_release_interface(driver_of(intf), info->data);
 454                 return status;
 455         }
 456
 457         /* FIXME cdc-ether has some multicast code too, though it complains
 458          * in routine cases.  info->ether describes the multicast support.
 459          * Implement that here, manipulating the cdc filter as needed.
 460          */
 461         return 0;
 462 }
 463 EXPORT_SYMBOL_GPL(usbnet_cdc_bind);
 464
 465 static const struct driver_info cdc_info = {
 466         .description =  "CDC Ethernet Device",
 467         .flags =        FLAG_ETHER | FLAG_POINTTOPOINT,
 468         .bind =         usbnet_cdc_bind,
 469         .unbind =       usbnet_cdc_unbind,
 470         .status =       usbnet_cdc_status,
 471         .manage_power = usbnet_manage_power,
 472 };
 473
 474 static const struct driver_info wwan_info = {
 475         .description =  "Mobile Broadband Network Device",
 476         .flags =        FLAG_WWAN,
 477         .bind =         usbnet_cdc_bind,
 478         .unbind =       usbnet_cdc_unbind,
 479         .status =       usbnet_cdc_status,
 480         .manage_power = usbnet_manage_power,
 481 };
 482
 483 /*-------------------------------------------------------------------------*/
 484
 485 #define HUAWEI_VENDOR_ID        0x12D1
 486 #define NOVATEL_VENDOR_ID       0x1410
 487 #define ZTE_VENDOR_ID           0x19D2
 488 #define DELL_VENDOR_ID          0x413C
 489 #define REALTEK_VENDOR_ID       0x0bda
 490
 491 static const struct usb_device_id       products[] = {
 492 /* BLACKLIST !!
 493  *
 494  * First blacklist any products that are egregiously nonconformant
 495  * with the CDC Ethernet specs.  Minor braindamage we cope with; when
 496  * they're not even trying, needing a separate driver is only the first
 497  * of the differences to show up.
 498  */
 499
 500 #define ZAURUS_MASTER_INTERFACE \
 501         .bInterfaceClass        = USB_CLASS_COMM, \
 502         .bInterfaceSubClass     = USB_CDC_SUBCLASS_ETHERNET, \
 503         .bInterfaceProtocol     = USB_CDC_PROTO_NONE
 504
 505 /* SA-1100 based Sharp Zaurus ("collie"), or compatible;
 506  * wire-incompatible with true CDC Ethernet implementations.
 507  * (And, it seems, needlessly so...)
 508  */
 509 {
 510         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 511                           | USB_DEVICE_ID_MATCH_DEVICE,
 512         .idVendor               = 0x04DD,
 513         .idProduct              = 0x8004,
 514         ZAURUS_MASTER_INTERFACE,
 515         .driver_info            = 0,
 516 },
 517
 518 /* PXA-25x based Sharp Zaurii.  Note that it seems some of these
 519  * (later models especially) may have shipped only with firmware
 520  * advertising false "CDC MDLM" compatibility ... but we're not
 521  * clear which models did that, so for now let's assume the worst.
 522  */
 523 {
 524         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 525                           | USB_DEVICE_ID_MATCH_DEVICE,
 526         .idVendor               = 0x04DD,
 527         .idProduct              = 0x8005,       /* A-300 */
 528         ZAURUS_MASTER_INTERFACE,
 529         .driver_info            = 0,
 530 }, {
 531         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 532                           | USB_DEVICE_ID_MATCH_DEVICE,
 533         .idVendor               = 0x04DD,
 534         .idProduct              = 0x8006,       /* B-500/SL-5600 */
 535         ZAURUS_MASTER_INTERFACE,
 536         .driver_info            = 0,
 537 }, {
 538         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 539                           | USB_DEVICE_ID_MATCH_DEVICE,
 540         .idVendor               = 0x04DD,
 541         .idProduct              = 0x8007,       /* C-700 */
 542         ZAURUS_MASTER_INTERFACE,
 543         .driver_info            = 0,
 544 }, {
 545         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 546                  | USB_DEVICE_ID_MATCH_DEVICE,
 547         .idVendor               = 0x04DD,
 548         .idProduct              = 0x9031,       /* C-750 C-760 */
 549         ZAURUS_MASTER_INTERFACE,
 550         .driver_info            = 0,
 551 }, {
 552         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 553                  | USB_DEVICE_ID_MATCH_DEVICE,
 554         .idVendor               = 0x04DD,
 555         .idProduct              = 0x9032,       /* SL-6000 */
 556         ZAURUS_MASTER_INTERFACE,
 557         .driver_info            = 0,
 558 }, {
 559         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 560                  | USB_DEVICE_ID_MATCH_DEVICE,
 561         .idVendor               = 0x04DD,
 562         /* reported with some C860 units */
 563         .idProduct              = 0x9050,       /* C-860 */
 564         ZAURUS_MASTER_INTERFACE,
 565         .driver_info            = 0,
 566 },
 567
 568 /* Olympus has some models with a Zaurus-compatible option.
 569  * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
 570  */
 571 {
 572         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 573                  | USB_DEVICE_ID_MATCH_DEVICE,
 574         .idVendor               = 0x07B4,
 575         .idProduct              = 0x0F02,       /* R-1000 */
 576         ZAURUS_MASTER_INTERFACE,
 577         .driver_info            = 0,
 578 },
 579
 580 /* LG Electronics VL600 wants additional headers on every frame */
 581 {
 582         USB_DEVICE_AND_INTERFACE_INFO(0x1004, 0x61aa, USB_CLASS_COMM,
 583                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 584         .driver_info = 0,
 585 },
 586
 587 /* Logitech Harmony 900 - uses the pseudo-MDLM (BLAN) driver */
 588 {
 589         USB_DEVICE_AND_INTERFACE_INFO(0x046d, 0xc11f, USB_CLASS_COMM,
 590                         USB_CDC_SUBCLASS_MDLM, USB_CDC_PROTO_NONE),
 591         .driver_info            = 0,
 592 },
 593
 594 /* Novatel USB551L and MC551 - handled by qmi_wwan */
 595 {
 596         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0xB001, USB_CLASS_COMM,
 597                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 598         .driver_info = 0,
 599 },
 600
 601 /* Novatel E362 - handled by qmi_wwan */
 602 {
 603         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9010, USB_CLASS_COMM,
 604                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 605         .driver_info = 0,
 606 },
 607
 608 /* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
 609 {
 610         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8195, USB_CLASS_COMM,
 611                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 612         .driver_info = 0,
 613 },
 614
 615 /* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
 616 {
 617         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8196, USB_CLASS_COMM,
 618                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 619         .driver_info = 0,
 620 },
 621
 622 /* Dell Wireless 5804 (Novatel E371) - handled by qmi_wwan */
 623 {
 624         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x819b, USB_CLASS_COMM,
 625                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 626         .driver_info = 0,
 627 },
 628
 629 /* Novatel Expedite E371 - handled by qmi_wwan */
 630 {
 631         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9011, USB_CLASS_COMM,
 632                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 633         .driver_info = 0,
 634 },
 635
 636 /* AnyDATA ADU960S - handled by qmi_wwan */
 637 {
 638         USB_DEVICE_AND_INTERFACE_INFO(0x16d5, 0x650a, USB_CLASS_COMM,
 639                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 640         .driver_info = 0,
 641 },
 642
 643 /* Huawei E1820 - handled by qmi_wwan */
 644 {
 645         USB_DEVICE_INTERFACE_NUMBER(HUAWEI_VENDOR_ID, 0x14ac, 1),
 646         .driver_info = 0,
 647 },
 648
 649 /* Realtek RTL8152 Based USB 2.0 Ethernet Adapters */
 650 {
 651         USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8152, USB_CLASS_COMM,
 652                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 653         .driver_info = 0,
 654 },
 655
 656 /* Realtek RTL8153 Based USB 3.0 Ethernet Adapters */
 657 {
 658         USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8153, USB_CLASS_COMM,
 659                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 660         .driver_info = 0,
 661 },
 662
 663 /* WHITELIST!!!
 664  *
 665  * CDC Ether uses two interfaces, not necessarily consecutive.
 666  * We match the main interface, ignoring the optional device
 667  * class so we could handle devices that aren't exclusively
 668  * CDC ether.
 669  *
 670  * NOTE:  this match must come AFTER entries blacklisting devices
 671  * because of bugs/quirks in a given product (like Zaurus, above).
 672  */
 673 {
 674         /* ZTE (Vodafone) K3805-Z */
 675         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1003, USB_CLASS_COMM,
 676                                       USB_CDC_SUBCLASS_ETHERNET,
 677                                       USB_CDC_PROTO_NONE),
 678         .driver_info = (unsigned long)&wwan_info,
 679 }, {
 680         /* ZTE (Vodafone) K3806-Z */
 681         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1015, USB_CLASS_COMM,
 682                                       USB_CDC_SUBCLASS_ETHERNET,
 683                                       USB_CDC_PROTO_NONE),
 684         .driver_info = (unsigned long)&wwan_info,
 685 }, {
 686         /* ZTE (Vodafone) K4510-Z */
 687         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1173, USB_CLASS_COMM,
 688                                       USB_CDC_SUBCLASS_ETHERNET,
 689                                       USB_CDC_PROTO_NONE),
 690         .driver_info = (unsigned long)&wwan_info,
 691 }, {
 692         /* ZTE (Vodafone) K3770-Z */
 693         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1177, USB_CLASS_COMM,
 694                                       USB_CDC_SUBCLASS_ETHERNET,
 695                                       USB_CDC_PROTO_NONE),
 696         .driver_info = (unsigned long)&wwan_info,
 697 }, {
 698         /* ZTE (Vodafone) K3772-Z */
 699         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1181, USB_CLASS_COMM,
 700                                       USB_CDC_SUBCLASS_ETHERNET,
 701                                       USB_CDC_PROTO_NONE),
 702         .driver_info = (unsigned long)&wwan_info,
 703 }, {
 704         /* Telit modules */
 705         USB_VENDOR_AND_INTERFACE_INFO(0x1bc7, USB_CLASS_COMM,
 706                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 707         .driver_info = (kernel_ulong_t) &wwan_info,
 708 }, {
 709         USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
 710                         USB_CDC_PROTO_NONE),
 711         .driver_info = (unsigned long) &cdc_info,
 712 }, {
 713         USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
 714                         USB_CDC_PROTO_NONE),
 715         .driver_info = (unsigned long)&wwan_info,
 716
 717 }, {
 718         /* Various Huawei modems with a network port like the UMG1831 */
 719         USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_COMM,
 720                                       USB_CDC_SUBCLASS_ETHERNET, 255),
 721         .driver_info = (unsigned long)&wwan_info,
 722 },
 723         { },            /* END */
 724 };
 725 MODULE_DEVICE_TABLE(usb, products);
 726
 727 static struct usb_driver cdc_driver = {
 728         .name =         "cdc_ether",
 729         .id_table =     products,
 730         .probe =        usbnet_probe,
 731         .disconnect =   usbnet_disconnect,
 732         .suspend =      usbnet_suspend,
 733         .resume =       usbnet_resume,
 734         .reset_resume = usbnet_resume,
 735         .supports_autosuspend = 1,
 736         .disable_hub_initiated_lpm = 1,
 737 };
 738
 739 module_usb_driver(cdc_driver);
 740
 741 MODULE_AUTHOR("David Brownell");
 742 MODULE_DESCRIPTION("USB CDC Ethernet devices");
 743 MODULE_LICENSE("GPL");