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