drivers/net/usb/cdc_ether.c

   1 /*
   2  * CDC Ethernet based networking peripherals
   3  * Copyright (C) 2003-2005 by David Brownell
   4  * Copyright (C) 2006 by Ole Andre Vadla Ravnas (ActiveSync)
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 // #define      DEBUG                   // error path messages, extra info
  21 // #define      VERBOSE                 // more; success messages
  22
  23 #include <linux/module.h>
  24 #include <linux/netdevice.h>
  25 #include <linux/etherdevice.h>
  26 #include <linux/ethtool.h>
  27 #include <linux/workqueue.h>
  28 #include <linux/mii.h>
  29 #include <linux/usb.h>
  30 #include <linux/usb/cdc.h>
  31 #include <linux/usb/usbnet.h>
  32
  33
  34 #if IS_ENABLED(CONFIG_USB_NET_RNDIS_HOST)
  35
  36 static int is_rndis(struct usb_interface_descriptor *desc)
  37 {
  38         return (desc->bInterfaceClass == USB_CLASS_COMM &&
  39                 desc->bInterfaceSubClass == 2 &&
  40                 desc->bInterfaceProtocol == 0xff);
  41 }
  42
  43 static int is_activesync(struct usb_interface_descriptor *desc)
  44 {
  45         return (desc->bInterfaceClass == USB_CLASS_MISC &&
  46                 desc->bInterfaceSubClass == 1 &&
  47                 desc->bInterfaceProtocol == 1);
  48 }
  49
  50 static int is_wireless_rndis(struct usb_interface_descriptor *desc)
  51 {
  52         return (desc->bInterfaceClass == USB_CLASS_WIRELESS_CONTROLLER &&
  53                 desc->bInterfaceSubClass == 1 &&
  54                 desc->bInterfaceProtocol == 3);
  55 }
  56
  57 #else
  58
  59 #define is_rndis(desc)          0
  60 #define is_activesync(desc)     0
  61 #define is_wireless_rndis(desc) 0
  62
  63 #endif
  64
  65 static const u8 mbm_guid[16] = {
  66         0xa3, 0x17, 0xa8, 0x8b, 0x04, 0x5e, 0x4f, 0x01,
  67         0xa6, 0x07, 0xc0, 0xff, 0xcb, 0x7e, 0x39, 0x2a,
  68 };
  69
  70 static void usbnet_cdc_update_filter(struct usbnet *dev)
  71 {
  72         struct cdc_state        *info = (void *) &dev->data;
  73         struct usb_interface    *intf = info->control;
  74
  75         u16 cdc_filter =
  76             USB_CDC_PACKET_TYPE_ALL_MULTICAST | USB_CDC_PACKET_TYPE_DIRECTED |
  77             USB_CDC_PACKET_TYPE_BROADCAST;
  78
  79         if (dev->net->flags & IFF_PROMISC)
  80                 cdc_filter |= USB_CDC_PACKET_TYPE_PROMISCUOUS;
  81
  82         /* FIXME cdc-ether has some multicast code too, though it complains
  83          * in routine cases.  info->ether describes the multicast support.
  84          * Implement that here, manipulating the cdc filter as needed.
  85          */
  86
  87         usb_control_msg(dev->udev,
  88                         usb_sndctrlpipe(dev->udev, 0),
  89                         USB_CDC_SET_ETHERNET_PACKET_FILTER,
  90                         USB_TYPE_CLASS | USB_RECIP_INTERFACE,
  91                         cdc_filter,
  92                         intf->cur_altsetting->desc.bInterfaceNumber,
  93                         NULL,
  94                         0,
  95                         USB_CTRL_SET_TIMEOUT
  96                 );
  97 }
  98
  99 /* probes control interface, claims data interface, collects the bulk
 100  * endpoints, activates data interface (if needed), maybe sets MTU.
 101  * all pure cdc, except for certain firmware workarounds, and knowing
 102  * that rndis uses one different rule.
 103  */
 104 int usbnet_generic_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
 105 {
 106         u8                              *buf = intf->cur_altsetting->extra;
 107         int                             len = intf->cur_altsetting->extralen;
 108         struct usb_interface_descriptor *d;
 109         struct cdc_state                *info = (void *) &dev->data;
 110         int                             status;
 111         int                             rndis;
 112         bool                            android_rndis_quirk = false;
 113         struct usb_driver               *driver = driver_of(intf);
 114         struct usb_cdc_mdlm_desc        *desc = NULL;
 115         struct usb_cdc_mdlm_detail_desc *detail = NULL;
 116
 117         if (sizeof(dev->data) < sizeof(*info))
 118                 return -EDOM;
 119
 120         /* expect strict spec conformance for the descriptors, but
 121          * cope with firmware which stores them in the wrong place
 122          */
 123         if (len == 0 && dev->udev->actconfig->extralen) {
 124                 /* Motorola SB4100 (and others: Brad Hards says it's
 125                  * from a Broadcom design) put CDC descriptors here
 126                  */
 127                 buf = dev->udev->actconfig->extra;
 128                 len = dev->udev->actconfig->extralen;
 129                 dev_dbg(&intf->dev, "CDC descriptors on config\n");
 130         }
 131
 132         /* Maybe CDC descriptors are after the endpoint?  This bug has
 133          * been seen on some 2Wire Inc RNDIS-ish products.
 134          */
 135         if (len == 0) {
 136                 struct usb_host_endpoint        *hep;
 137
 138                 hep = intf->cur_altsetting->endpoint;
 139                 if (hep) {
 140                         buf = hep->extra;
 141                         len = hep->extralen;
 142                 }
 143                 if (len)
 144                         dev_dbg(&intf->dev,
 145                                 "CDC descriptors on endpoint\n");
 146         }
 147
 148         /* this assumes that if there's a non-RNDIS vendor variant
 149          * of cdc-acm, it'll fail RNDIS requests cleanly.
 150          */
 151         rndis = (is_rndis(&intf->cur_altsetting->desc) ||
 152                  is_activesync(&intf->cur_altsetting->desc) ||
 153                  is_wireless_rndis(&intf->cur_altsetting->desc));
 154
 155         memset(info, 0, sizeof(*info));
 156         info->control = intf;
 157         while (len > 3) {
 158                 if (buf[1] != USB_DT_CS_INTERFACE)
 159                         goto next_desc;
 160
 161                 /* use bDescriptorSubType to identify the CDC descriptors.
 162                  * We expect devices with CDC header and union descriptors.
 163                  * For CDC Ethernet we need the ethernet descriptor.
 164                  * For RNDIS, ignore two (pointless) CDC modem descriptors
 165                  * in favor of a complicated OID-based RPC scheme doing what
 166                  * CDC Ethernet achieves with a simple descriptor.
 167                  */
 168                 switch (buf[2]) {
 169                 case USB_CDC_HEADER_TYPE:
 170                         if (info->header) {
 171                                 dev_dbg(&intf->dev, "extra CDC header\n");
 172                                 goto bad_desc;
 173                         }
 174                         info->header = (void *) buf;
 175                         if (info->header->bLength != sizeof(*info->header)) {
 176                                 dev_dbg(&intf->dev, "CDC header len %u\n",
 177                                         info->header->bLength);
 178                                 goto bad_desc;
 179                         }
 180                         break;
 181                 case USB_CDC_ACM_TYPE:
 182                         /* paranoia:  disambiguate a "real" vendor-specific
 183                          * modem interface from an RNDIS non-modem.
 184                          */
 185                         if (rndis) {
 186                                 struct usb_cdc_acm_descriptor *acm;
 187
 188                                 acm = (void *) buf;
 189                                 if (acm->bmCapabilities) {
 190                                         dev_dbg(&intf->dev,
 191                                                 "ACM capabilities %02x, "
 192                                                 "not really RNDIS?\n",
 193                                                 acm->bmCapabilities);
 194                                         goto bad_desc;
 195                                 }
 196                         }
 197                         break;
 198                 case USB_CDC_UNION_TYPE:
 199                         if (info->u) {
 200                                 dev_dbg(&intf->dev, "extra CDC union\n");
 201                                 goto bad_desc;
 202                         }
 203                         info->u = (void *) buf;
 204                         if (info->u->bLength != sizeof(*info->u)) {
 205                                 dev_dbg(&intf->dev, "CDC union len %u\n",
 206                                         info->u->bLength);
 207                                 goto bad_desc;
 208                         }
 209
 210                         /* we need a master/control interface (what we're
 211                          * probed with) and a slave/data interface; union
 212                          * descriptors sort this all out.
 213                          */
 214                         info->control = usb_ifnum_to_if(dev->udev,
 215                                                 info->u->bMasterInterface0);
 216                         info->data = usb_ifnum_to_if(dev->udev,
 217                                                 info->u->bSlaveInterface0);
 218                         if (!info->control || !info->data) {
 219                                 dev_dbg(&intf->dev,
 220                                         "master #%u/%p slave #%u/%p\n",
 221                                         info->u->bMasterInterface0,
 222                                         info->control,
 223                                         info->u->bSlaveInterface0,
 224                                         info->data);
 225                                 /* fall back to hard-wiring for RNDIS */
 226                                 if (rndis) {
 227                                         android_rndis_quirk = true;
 228                                         goto next_desc;
 229                                 }
 230                                 goto bad_desc;
 231                         }
 232                         if (info->control != intf) {
 233                                 dev_dbg(&intf->dev, "bogus CDC Union\n");
 234                                 /* Ambit USB Cable Modem (and maybe others)
 235                                  * interchanges master and slave interface.
 236                                  */
 237                                 if (info->data == intf) {
 238                                         info->data = info->control;
 239                                         info->control = intf;
 240                                 } else
 241                                         goto bad_desc;
 242                         }
 243
 244                         /* some devices merge these - skip class check */
 245                         if (info->control == info->data)
 246                                 goto next_desc;
 247
 248                         /* a data interface altsetting does the real i/o */
 249                         d = &info->data->cur_altsetting->desc;
 250                         if (d->bInterfaceClass != USB_CLASS_CDC_DATA) {
 251                                 dev_dbg(&intf->dev, "slave class %u\n",
 252                                         d->bInterfaceClass);
 253                                 goto bad_desc;
 254                         }
 255                         break;
 256                 case USB_CDC_ETHERNET_TYPE:
 257                         if (info->ether) {
 258                                 dev_dbg(&intf->dev, "extra CDC ether\n");
 259                                 goto bad_desc;
 260                         }
 261                         info->ether = (void *) buf;
 262                         if (info->ether->bLength != sizeof(*info->ether)) {
 263                                 dev_dbg(&intf->dev, "CDC ether len %u\n",
 264                                         info->ether->bLength);
 265                                 goto bad_desc;
 266                         }
 267                         dev->hard_mtu = le16_to_cpu(
 268                                                 info->ether->wMaxSegmentSize);
 269                         /* because of Zaurus, we may be ignoring the host
 270                          * side link address we were given.
 271                          */
 272                         break;
 273                 case USB_CDC_MDLM_TYPE:
 274                         if (desc) {
 275                                 dev_dbg(&intf->dev, "extra MDLM descriptor\n");
 276                                 goto bad_desc;
 277                         }
 278
 279                         desc = (void *)buf;
 280
 281                         if (desc->bLength != sizeof(*desc))
 282                                 goto bad_desc;
 283
 284                         if (memcmp(&desc->bGUID, mbm_guid, 16))
 285                                 goto bad_desc;
 286                         break;
 287                 case USB_CDC_MDLM_DETAIL_TYPE:
 288                         if (detail) {
 289                                 dev_dbg(&intf->dev, "extra MDLM detail descriptor\n");
 290                                 goto bad_desc;
 291                         }
 292
 293                         detail = (void *)buf;
 294
 295                         if (detail->bGuidDescriptorType == 0) {
 296                                 if (detail->bLength < (sizeof(*detail) + 1))
 297                                         goto bad_desc;
 298                         } else
 299                                 goto bad_desc;
 300                         break;
 301                 }
 302 next_desc:
 303                 len -= buf[0];  /* bLength */
 304                 buf += buf[0];
 305         }
 306
 307         /* Microsoft ActiveSync based and some regular RNDIS devices lack the
 308          * CDC descriptors, so we'll hard-wire the interfaces and not check
 309          * for descriptors.
 310          *
 311          * Some Android RNDIS devices have a CDC Union descriptor pointing
 312          * to non-existing interfaces.  Ignore that and attempt the same
 313          * hard-wired 0 and 1 interfaces.
 314          */
 315         if (rndis && (!info->u || android_rndis_quirk)) {
 316                 info->control = usb_ifnum_to_if(dev->udev, 0);
 317                 info->data = usb_ifnum_to_if(dev->udev, 1);
 318                 if (!info->control || !info->data || info->control != intf) {
 319                         dev_dbg(&intf->dev,
 320                                 "rndis: master #0/%p slave #1/%p\n",
 321                                 info->control,
 322                                 info->data);
 323                         goto bad_desc;
 324                 }
 325
 326         } else if (!info->header || !info->u || (!rndis && !info->ether)) {
 327                 dev_dbg(&intf->dev, "missing cdc %s%s%sdescriptor\n",
 328                         info->header ? "" : "header ",
 329                         info->u ? "" : "union ",
 330                         info->ether ? "" : "ether ");
 331                 goto bad_desc;
 332         }
 333
 334         /* claim data interface and set it up ... with side effects.
 335          * network traffic can't flow until an altsetting is enabled.
 336          */
 337         if (info->data != info->control) {
 338                 status = usb_driver_claim_interface(driver, info->data, dev);
 339                 if (status < 0)
 340                         return status;
 341         }
 342         status = usbnet_get_endpoints(dev, info->data);
 343         if (status < 0) {
 344                 /* ensure immediate exit from usbnet_disconnect */
 345                 usb_set_intfdata(info->data, NULL);
 346                 if (info->data != info->control)
 347                         usb_driver_release_interface(driver, info->data);
 348                 return status;
 349         }
 350
 351         /* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */
 352         if (info->data != info->control)
 353                 dev->status = NULL;
 354         if (info->control->cur_altsetting->desc.bNumEndpoints == 1) {
 355                 struct usb_endpoint_descriptor  *desc;
 356
 357                 dev->status = &info->control->cur_altsetting->endpoint [0];
 358                 desc = &dev->status->desc;
 359                 if (!usb_endpoint_is_int_in(desc) ||
 360                     (le16_to_cpu(desc->wMaxPacketSize)
 361                      < sizeof(struct usb_cdc_notification)) ||
 362                     !desc->bInterval) {
 363                         dev_dbg(&intf->dev, "bad notification endpoint\n");
 364                         dev->status = NULL;
 365                 }
 366         }
 367         if (rndis && !dev->status) {
 368                 dev_dbg(&intf->dev, "missing RNDIS status endpoint\n");
 369                 usb_set_intfdata(info->data, NULL);
 370                 usb_driver_release_interface(driver, info->data);
 371                 return -ENODEV;
 372         }
 373
 374         /* Some devices don't initialise properly. In particular
 375          * the packet filter is not reset. There are devices that
 376          * don't do reset all the way. So the packet filter should
 377          * be set to a sane initial value.
 378          */
 379         usbnet_cdc_update_filter(dev);
 380
 381         return 0;
 382
 383 bad_desc:
 384         dev_info(&dev->udev->dev, "bad CDC descriptors\n");
 385         return -ENODEV;
 386 }
 387 EXPORT_SYMBOL_GPL(usbnet_generic_cdc_bind);
 388
 389 void usbnet_cdc_unbind(struct usbnet *dev, struct usb_interface *intf)
 390 {
 391         struct cdc_state                *info = (void *) &dev->data;
 392         struct usb_driver               *driver = driver_of(intf);
 393
 394         /* combined interface - nothing  to do */
 395         if (info->data == info->control)
 396                 return;
 397
 398         /* disconnect master --> disconnect slave */
 399         if (intf == info->control && info->data) {
 400                 /* ensure immediate exit from usbnet_disconnect */
 401                 usb_set_intfdata(info->data, NULL);
 402                 usb_driver_release_interface(driver, info->data);
 403                 info->data = NULL;
 404         }
 405
 406         /* and vice versa (just in case) */
 407         else if (intf == info->data && info->control) {
 408                 /* ensure immediate exit from usbnet_disconnect */
 409                 usb_set_intfdata(info->control, NULL);
 410                 usb_driver_release_interface(driver, info->control);
 411                 info->control = NULL;
 412         }
 413 }
 414 EXPORT_SYMBOL_GPL(usbnet_cdc_unbind);
 415
 416 /* Communications Device Class, Ethernet Control model
 417  *
 418  * Takes two interfaces.  The DATA interface is inactive till an altsetting
 419  * is selected.  Configuration data includes class descriptors.  There's
 420  * an optional status endpoint on the control interface.
 421  *
 422  * This should interop with whatever the 2.4 "CDCEther.c" driver
 423  * (by Brad Hards) talked with, with more functionality.
 424  */
 425
 426 static void dumpspeed(struct usbnet *dev, __le32 *speeds)
 427 {
 428         netif_info(dev, timer, dev->net,
 429                    "link speeds: %u kbps up, %u kbps down\n",
 430                    __le32_to_cpu(speeds[0]) / 1000,
 431                    __le32_to_cpu(speeds[1]) / 1000);
 432 }
 433
 434 void usbnet_cdc_status(struct usbnet *dev, struct urb *urb)
 435 {
 436         struct usb_cdc_notification     *event;
 437
 438         if (urb->actual_length < sizeof(*event))
 439                 return;
 440
 441         /* SPEED_CHANGE can get split into two 8-byte packets */
 442         if (test_and_clear_bit(EVENT_STS_SPLIT, &dev->flags)) {
 443                 dumpspeed(dev, (__le32 *) urb->transfer_buffer);
 444                 return;
 445         }
 446
 447         event = urb->transfer_buffer;
 448         switch (event->bNotificationType) {
 449         case USB_CDC_NOTIFY_NETWORK_CONNECTION:
 450                 netif_dbg(dev, timer, dev->net, "CDC: carrier %s\n",
 451                           event->wValue ? "on" : "off");
 452                 usbnet_link_change(dev, !!event->wValue, 0);
 453                 break;
 454         case USB_CDC_NOTIFY_SPEED_CHANGE:       /* tx/rx rates */
 455                 netif_dbg(dev, timer, dev->net, "CDC: speed change (len %d)\n",
 456                           urb->actual_length);
 457                 if (urb->actual_length != (sizeof(*event) + 8))
 458                         set_bit(EVENT_STS_SPLIT, &dev->flags);
 459                 else
 460                         dumpspeed(dev, (__le32 *) &event[1]);
 461                 break;
 462         /* USB_CDC_NOTIFY_RESPONSE_AVAILABLE can happen too (e.g. RNDIS),
 463          * but there are no standard formats for the response data.
 464          */
 465         default:
 466                 netdev_err(dev->net, "CDC: unexpected notification %02x!\n",
 467                            event->bNotificationType);
 468                 break;
 469         }
 470 }
 471 EXPORT_SYMBOL_GPL(usbnet_cdc_status);
 472
 473 int usbnet_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
 474 {
 475         int                             status;
 476         struct cdc_state                *info = (void *) &dev->data;
 477
 478         BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data)
 479                         < sizeof(struct cdc_state)));
 480
 481         status = usbnet_generic_cdc_bind(dev, intf);
 482         if (status < 0)
 483                 return status;
 484
 485         status = usbnet_get_ethernet_addr(dev, info->ether->iMACAddress);
 486         if (status < 0) {
 487                 usb_set_intfdata(info->data, NULL);
 488                 usb_driver_release_interface(driver_of(intf), info->data);
 489                 return status;
 490         }
 491
 492         return 0;
 493 }
 494 EXPORT_SYMBOL_GPL(usbnet_cdc_bind);
 495
 496 static const struct driver_info cdc_info = {
 497         .description =  "CDC Ethernet Device",
 498         .flags =        FLAG_ETHER | FLAG_POINTTOPOINT,
 499         .bind =         usbnet_cdc_bind,
 500         .unbind =       usbnet_cdc_unbind,
 501         .status =       usbnet_cdc_status,
 502         .set_rx_mode =  usbnet_cdc_update_filter,
 503         .manage_power = usbnet_manage_power,
 504 };
 505
 506 static const struct driver_info wwan_info = {
 507         .description =  "Mobile Broadband Network Device",
 508         .flags =        FLAG_WWAN,
 509         .bind =         usbnet_cdc_bind,
 510         .unbind =       usbnet_cdc_unbind,
 511         .status =       usbnet_cdc_status,
 512         .set_rx_mode =  usbnet_cdc_update_filter,
 513         .manage_power = usbnet_manage_power,
 514 };
 515
 516 /*-------------------------------------------------------------------------*/
 517
 518 #define HUAWEI_VENDOR_ID        0x12D1
 519 #define NOVATEL_VENDOR_ID       0x1410
 520 #define ZTE_VENDOR_ID           0x19D2
 521 #define DELL_VENDOR_ID          0x413C
 522 #define REALTEK_VENDOR_ID       0x0bda
 523 #define SAMSUNG_VENDOR_ID       0x04e8
 524
 525 static const struct usb_device_id       products[] = {
 526 /* BLACKLIST !!
 527  *
 528  * First blacklist any products that are egregiously nonconformant
 529  * with the CDC Ethernet specs.  Minor braindamage we cope with; when
 530  * they're not even trying, needing a separate driver is only the first
 531  * of the differences to show up.
 532  */
 533
 534 #define ZAURUS_MASTER_INTERFACE \
 535         .bInterfaceClass        = USB_CLASS_COMM, \
 536         .bInterfaceSubClass     = USB_CDC_SUBCLASS_ETHERNET, \
 537         .bInterfaceProtocol     = USB_CDC_PROTO_NONE
 538
 539 /* SA-1100 based Sharp Zaurus ("collie"), or compatible;
 540  * wire-incompatible with true CDC Ethernet implementations.
 541  * (And, it seems, needlessly so...)
 542  */
 543 {
 544         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 545                           | USB_DEVICE_ID_MATCH_DEVICE,
 546         .idVendor               = 0x04DD,
 547         .idProduct              = 0x8004,
 548         ZAURUS_MASTER_INTERFACE,
 549         .driver_info            = 0,
 550 },
 551
 552 /* PXA-25x based Sharp Zaurii.  Note that it seems some of these
 553  * (later models especially) may have shipped only with firmware
 554  * advertising false "CDC MDLM" compatibility ... but we're not
 555  * clear which models did that, so for now let's assume the worst.
 556  */
 557 {
 558         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 559                           | USB_DEVICE_ID_MATCH_DEVICE,
 560         .idVendor               = 0x04DD,
 561         .idProduct              = 0x8005,       /* A-300 */
 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         .idProduct              = 0x8006,       /* B-500/SL-5600 */
 569         ZAURUS_MASTER_INTERFACE,
 570         .driver_info            = 0,
 571 }, {
 572         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 573                           | USB_DEVICE_ID_MATCH_DEVICE,
 574         .idVendor               = 0x04DD,
 575         .idProduct              = 0x8007,       /* C-700 */
 576         ZAURUS_MASTER_INTERFACE,
 577         .driver_info            = 0,
 578 }, {
 579         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 580                  | USB_DEVICE_ID_MATCH_DEVICE,
 581         .idVendor               = 0x04DD,
 582         .idProduct              = 0x9031,       /* C-750 C-760 */
 583         ZAURUS_MASTER_INTERFACE,
 584         .driver_info            = 0,
 585 }, {
 586         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 587                  | USB_DEVICE_ID_MATCH_DEVICE,
 588         .idVendor               = 0x04DD,
 589         .idProduct              = 0x9032,       /* SL-6000 */
 590         ZAURUS_MASTER_INTERFACE,
 591         .driver_info            = 0,
 592 }, {
 593         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 594                  | USB_DEVICE_ID_MATCH_DEVICE,
 595         .idVendor               = 0x04DD,
 596         /* reported with some C860 units */
 597         .idProduct              = 0x9050,       /* C-860 */
 598         ZAURUS_MASTER_INTERFACE,
 599         .driver_info            = 0,
 600 },
 601
 602 /* Olympus has some models with a Zaurus-compatible option.
 603  * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
 604  */
 605 {
 606         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 607                  | USB_DEVICE_ID_MATCH_DEVICE,
 608         .idVendor               = 0x07B4,
 609         .idProduct              = 0x0F02,       /* R-1000 */
 610         ZAURUS_MASTER_INTERFACE,
 611         .driver_info            = 0,
 612 },
 613
 614 /* LG Electronics VL600 wants additional headers on every frame */
 615 {
 616         USB_DEVICE_AND_INTERFACE_INFO(0x1004, 0x61aa, USB_CLASS_COMM,
 617                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 618         .driver_info = 0,
 619 },
 620
 621 /* Logitech Harmony 900 - uses the pseudo-MDLM (BLAN) driver */
 622 {
 623         USB_DEVICE_AND_INTERFACE_INFO(0x046d, 0xc11f, USB_CLASS_COMM,
 624                         USB_CDC_SUBCLASS_MDLM, USB_CDC_PROTO_NONE),
 625         .driver_info            = 0,
 626 },
 627
 628 /* Novatel USB551L and MC551 - handled by qmi_wwan */
 629 {
 630         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0xB001, USB_CLASS_COMM,
 631                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 632         .driver_info = 0,
 633 },
 634
 635 /* Novatel E362 - handled by qmi_wwan */
 636 {
 637         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9010, USB_CLASS_COMM,
 638                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 639         .driver_info = 0,
 640 },
 641
 642 /* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
 643 {
 644         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8195, USB_CLASS_COMM,
 645                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 646         .driver_info = 0,
 647 },
 648
 649 /* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
 650 {
 651         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8196, USB_CLASS_COMM,
 652                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 653         .driver_info = 0,
 654 },
 655
 656 /* Dell Wireless 5804 (Novatel E371) - handled by qmi_wwan */
 657 {
 658         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x819b, USB_CLASS_COMM,
 659                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 660         .driver_info = 0,
 661 },
 662
 663 /* Novatel Expedite E371 - handled by qmi_wwan */
 664 {
 665         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9011, USB_CLASS_COMM,
 666                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 667         .driver_info = 0,
 668 },
 669
 670 /* AnyDATA ADU960S - handled by qmi_wwan */
 671 {
 672         USB_DEVICE_AND_INTERFACE_INFO(0x16d5, 0x650a, USB_CLASS_COMM,
 673                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 674         .driver_info = 0,
 675 },
 676
 677 /* Huawei E1820 - handled by qmi_wwan */
 678 {
 679         USB_DEVICE_INTERFACE_NUMBER(HUAWEI_VENDOR_ID, 0x14ac, 1),
 680         .driver_info = 0,
 681 },
 682
 683 /* Realtek RTL8152 Based USB 2.0 Ethernet Adapters */
 684 {
 685         USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8152, USB_CLASS_COMM,
 686                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 687         .driver_info = 0,
 688 },
 689
 690 /* Realtek RTL8153 Based USB 3.0 Ethernet Adapters */
 691 {
 692         USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8153, USB_CLASS_COMM,
 693                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 694         .driver_info = 0,
 695 },
 696
 697 /* Samsung USB Ethernet Adapters */
 698 {
 699         USB_DEVICE_AND_INTERFACE_INFO(SAMSUNG_VENDOR_ID, 0xa101, USB_CLASS_COMM,
 700                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 701         .driver_info = 0,
 702 },
 703
 704 /* WHITELIST!!!
 705  *
 706  * CDC Ether uses two interfaces, not necessarily consecutive.
 707  * We match the main interface, ignoring the optional device
 708  * class so we could handle devices that aren't exclusively
 709  * CDC ether.
 710  *
 711  * NOTE:  this match must come AFTER entries blacklisting devices
 712  * because of bugs/quirks in a given product (like Zaurus, above).
 713  */
 714 {
 715         /* ZTE (Vodafone) K3805-Z */
 716         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1003, USB_CLASS_COMM,
 717                                       USB_CDC_SUBCLASS_ETHERNET,
 718                                       USB_CDC_PROTO_NONE),
 719         .driver_info = (unsigned long)&wwan_info,
 720 }, {
 721         /* ZTE (Vodafone) K3806-Z */
 722         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1015, USB_CLASS_COMM,
 723                                       USB_CDC_SUBCLASS_ETHERNET,
 724                                       USB_CDC_PROTO_NONE),
 725         .driver_info = (unsigned long)&wwan_info,
 726 }, {
 727         /* ZTE (Vodafone) K4510-Z */
 728         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1173, USB_CLASS_COMM,
 729                                       USB_CDC_SUBCLASS_ETHERNET,
 730                                       USB_CDC_PROTO_NONE),
 731         .driver_info = (unsigned long)&wwan_info,
 732 }, {
 733         /* ZTE (Vodafone) K3770-Z */
 734         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1177, USB_CLASS_COMM,
 735                                       USB_CDC_SUBCLASS_ETHERNET,
 736                                       USB_CDC_PROTO_NONE),
 737         .driver_info = (unsigned long)&wwan_info,
 738 }, {
 739         /* ZTE (Vodafone) K3772-Z */
 740         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1181, USB_CLASS_COMM,
 741                                       USB_CDC_SUBCLASS_ETHERNET,
 742                                       USB_CDC_PROTO_NONE),
 743         .driver_info = (unsigned long)&wwan_info,
 744 }, {
 745         /* Telit modules */
 746         USB_VENDOR_AND_INTERFACE_INFO(0x1bc7, USB_CLASS_COMM,
 747                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 748         .driver_info = (kernel_ulong_t) &wwan_info,
 749 }, {
 750         USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
 751                         USB_CDC_PROTO_NONE),
 752         .driver_info = (unsigned long) &cdc_info,
 753 }, {
 754         USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
 755                         USB_CDC_PROTO_NONE),
 756         .driver_info = (unsigned long)&wwan_info,
 757
 758 }, {
 759         /* Various Huawei modems with a network port like the UMG1831 */
 760         USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_COMM,
 761                                       USB_CDC_SUBCLASS_ETHERNET, 255),
 762         .driver_info = (unsigned long)&wwan_info,
 763 },
 764         { },            /* END */
 765 };
 766 MODULE_DEVICE_TABLE(usb, products);
 767
 768 static struct usb_driver cdc_driver = {
 769         .name =         "cdc_ether",
 770         .id_table =     products,
 771         .probe =        usbnet_probe,
 772         .disconnect =   usbnet_disconnect,
 773         .suspend =      usbnet_suspend,
 774         .resume =       usbnet_resume,
 775         .reset_resume = usbnet_resume,
 776         .supports_autosuspend = 1,
 777         .disable_hub_initiated_lpm = 1,
 778 };
 779
 780 module_usb_driver(cdc_driver);
 781
 782 MODULE_AUTHOR("David Brownell");
 783 MODULE_DESCRIPTION("USB CDC Ethernet devices");
 784 MODULE_LICENSE("GPL");