drivers/net/usb/cdc_ether.c

   1 /*
   2  * CDC Ethernet based networking peripherals
   3  * Copyright (C) 2003-2005 by David Brownell
   4  * Copyright (C) 2006 by Ole Andre Vadla Ravnas (ActiveSync)
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 // #define      DEBUG                   // error path messages, extra info
  21 // #define      VERBOSE                 // more; success messages
  22
  23 #include <linux/module.h>
  24 #include <linux/netdevice.h>
  25 #include <linux/etherdevice.h>
  26 #include <linux/ethtool.h>
  27 #include <linux/workqueue.h>
  28 #include <linux/mii.h>
  29 #include <linux/usb.h>
  30 #include <linux/usb/cdc.h>
  31 #include <linux/usb/usbnet.h>
  32
  33
  34 #if IS_ENABLED(CONFIG_USB_NET_RNDIS_HOST)
  35
  36 static int is_rndis(struct usb_interface_descriptor *desc)
  37 {
  38         return (desc->bInterfaceClass == USB_CLASS_COMM &&
  39                 desc->bInterfaceSubClass == 2 &&
  40                 desc->bInterfaceProtocol == 0xff);
  41 }
  42
  43 static int is_activesync(struct usb_interface_descriptor *desc)
  44 {
  45         return (desc->bInterfaceClass == USB_CLASS_MISC &&
  46                 desc->bInterfaceSubClass == 1 &&
  47                 desc->bInterfaceProtocol == 1);
  48 }
  49
  50 static int is_wireless_rndis(struct usb_interface_descriptor *desc)
  51 {
  52         return (desc->bInterfaceClass == USB_CLASS_WIRELESS_CONTROLLER &&
  53                 desc->bInterfaceSubClass == 1 &&
  54                 desc->bInterfaceProtocol == 3);
  55 }
  56
  57 #else
  58
  59 #define is_rndis(desc)          0
  60 #define is_activesync(desc)     0
  61 #define is_wireless_rndis(desc) 0
  62
  63 #endif
  64
  65 static const u8 mbm_guid[16] = {
  66         0xa3, 0x17, 0xa8, 0x8b, 0x04, 0x5e, 0x4f, 0x01,
  67         0xa6, 0x07, 0xc0, 0xff, 0xcb, 0x7e, 0x39, 0x2a,
  68 };
  69
  70 static void usbnet_cdc_update_filter(struct usbnet *dev)
  71 {
  72         struct cdc_state        *info = (void *) &dev->data;
  73         struct usb_interface    *intf = info->control;
  74         struct net_device       *net = dev->net;
  75
  76         u16 cdc_filter = USB_CDC_PACKET_TYPE_DIRECTED
  77                         | USB_CDC_PACKET_TYPE_BROADCAST;
  78
  79         /* filtering on the device is an optional feature and not worth
  80          * the hassle so we just roughly care about snooping and if any
  81          * multicast is requested, we take every multicast
  82          */
  83         if (net->flags & IFF_PROMISC)
  84                 cdc_filter |= USB_CDC_PACKET_TYPE_PROMISCUOUS;
  85         if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI))
  86                 cdc_filter |= USB_CDC_PACKET_TYPE_ALL_MULTICAST;
  87
  88         usb_control_msg(dev->udev,
  89                         usb_sndctrlpipe(dev->udev, 0),
  90                         USB_CDC_SET_ETHERNET_PACKET_FILTER,
  91                         USB_TYPE_CLASS | USB_RECIP_INTERFACE,
  92                         cdc_filter,
  93                         intf->cur_altsetting->desc.bInterfaceNumber,
  94                         NULL,
  95                         0,
  96                         USB_CTRL_SET_TIMEOUT
  97                 );
  98 }
  99
 100 /* probes control interface, claims data interface, collects the bulk
 101  * endpoints, activates data interface (if needed), maybe sets MTU.
 102  * all pure cdc, except for certain firmware workarounds, and knowing
 103  * that rndis uses one different rule.
 104  */
 105 int usbnet_generic_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
 106 {
 107         u8                              *buf = intf->cur_altsetting->extra;
 108         int                             len = intf->cur_altsetting->extralen;
 109         struct usb_interface_descriptor *d;
 110         struct cdc_state                *info = (void *) &dev->data;
 111         int                             status;
 112         int                             rndis;
 113         bool                            android_rndis_quirk = false;
 114         struct usb_driver               *driver = driver_of(intf);
 115         struct usb_cdc_parsed_header header;
 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
 158         cdc_parse_cdc_header(&header, intf, buf, len);
 159
 160         info->u = header.usb_cdc_union_desc;
 161         info->header = header.usb_cdc_header_desc;
 162         info->ether = header.usb_cdc_ether_desc;
 163         /* we need a master/control interface (what we're
 164          * probed with) and a slave/data interface; union
 165          * descriptors sort this all out.
 166          */
 167         info->control = usb_ifnum_to_if(dev->udev,
 168         info->u->bMasterInterface0);
 169         info->data = usb_ifnum_to_if(dev->udev,
 170                 info->u->bSlaveInterface0);
 171         if (!info->control || !info->data) {
 172                 dev_dbg(&intf->dev,
 173                         "master #%u/%p slave #%u/%p\n",
 174                         info->u->bMasterInterface0,
 175                         info->control,
 176                         info->u->bSlaveInterface0,
 177                         info->data);
 178                 /* fall back to hard-wiring for RNDIS */
 179                 if (rndis) {
 180                         android_rndis_quirk = true;
 181                         goto skip;
 182                 }
 183                 goto bad_desc;
 184         }
 185         if (info->control != intf) {
 186                 dev_dbg(&intf->dev, "bogus CDC Union\n");
 187                 /* Ambit USB Cable Modem (and maybe others)
 188                  * interchanges master and slave interface.
 189                  */
 190                 if (info->data == intf) {
 191                         info->data = info->control;
 192                         info->control = intf;
 193                 } else
 194                         goto bad_desc;
 195         }
 196
 197         /* some devices merge these - skip class check */
 198         if (info->control == info->data)
 199                 goto skip;
 200
 201         /* a data interface altsetting does the real i/o */
 202         d = &info->data->cur_altsetting->desc;
 203         if (d->bInterfaceClass != USB_CLASS_CDC_DATA) {
 204                 dev_dbg(&intf->dev, "slave class %u\n",
 205                         d->bInterfaceClass);
 206                 goto bad_desc;
 207         }
 208 skip:
 209         if (    rndis &&
 210                 header.usb_cdc_acm_descriptor &&
 211                 header.usb_cdc_acm_descriptor->bmCapabilities) {
 212                         dev_dbg(&intf->dev,
 213                                 "ACM capabilities %02x, not really RNDIS?\n",
 214                                 header.usb_cdc_acm_descriptor->bmCapabilities);
 215                         goto bad_desc;
 216         }
 217
 218         if (header.usb_cdc_ether_desc) {
 219                 dev->hard_mtu = le16_to_cpu(info->ether->wMaxSegmentSize);
 220                 /* because of Zaurus, we may be ignoring the host
 221                  * side link address we were given.
 222                  */
 223         }
 224
 225         if (header.usb_cdc_mdlm_desc &&
 226                 memcmp(header.usb_cdc_mdlm_desc->bGUID, mbm_guid, 16)) {
 227                 dev_dbg(&intf->dev, "GUID doesn't match\n");
 228                 goto bad_desc;
 229         }
 230
 231         if (header.usb_cdc_mdlm_detail_desc &&
 232                 header.usb_cdc_mdlm_detail_desc->bLength <
 233                         (sizeof(struct usb_cdc_mdlm_detail_desc) + 1)) {
 234                 dev_dbg(&intf->dev, "Descriptor too short\n");
 235                 goto bad_desc;
 236         }
 237
 238
 239
 240         /* Microsoft ActiveSync based and some regular RNDIS devices lack the
 241          * CDC descriptors, so we'll hard-wire the interfaces and not check
 242          * for descriptors.
 243          *
 244          * Some Android RNDIS devices have a CDC Union descriptor pointing
 245          * to non-existing interfaces.  Ignore that and attempt the same
 246          * hard-wired 0 and 1 interfaces.
 247          */
 248         if (rndis && (!info->u || android_rndis_quirk)) {
 249                 info->control = usb_ifnum_to_if(dev->udev, 0);
 250                 info->data = usb_ifnum_to_if(dev->udev, 1);
 251                 if (!info->control || !info->data || info->control != intf) {
 252                         dev_dbg(&intf->dev,
 253                                 "rndis: master #0/%p slave #1/%p\n",
 254                                 info->control,
 255                                 info->data);
 256                         goto bad_desc;
 257                 }
 258
 259         } else if (!info->header || !info->u || (!rndis && !info->ether)) {
 260                 dev_dbg(&intf->dev, "missing cdc %s%s%sdescriptor\n",
 261                         info->header ? "" : "header ",
 262                         info->u ? "" : "union ",
 263                         info->ether ? "" : "ether ");
 264                 goto bad_desc;
 265         }
 266
 267         /* claim data interface and set it up ... with side effects.
 268          * network traffic can't flow until an altsetting is enabled.
 269          */
 270         if (info->data != info->control) {
 271                 status = usb_driver_claim_interface(driver, info->data, dev);
 272                 if (status < 0)
 273                         return status;
 274         }
 275         status = usbnet_get_endpoints(dev, info->data);
 276         if (status < 0) {
 277                 /* ensure immediate exit from usbnet_disconnect */
 278                 usb_set_intfdata(info->data, NULL);
 279                 if (info->data != info->control)
 280                         usb_driver_release_interface(driver, info->data);
 281                 return status;
 282         }
 283
 284         /* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */
 285         if (info->data != info->control)
 286                 dev->status = NULL;
 287         if (info->control->cur_altsetting->desc.bNumEndpoints == 1) {
 288                 struct usb_endpoint_descriptor  *desc;
 289
 290                 dev->status = &info->control->cur_altsetting->endpoint [0];
 291                 desc = &dev->status->desc;
 292                 if (!usb_endpoint_is_int_in(desc) ||
 293                     (le16_to_cpu(desc->wMaxPacketSize)
 294                      < sizeof(struct usb_cdc_notification)) ||
 295                     !desc->bInterval) {
 296                         dev_dbg(&intf->dev, "bad notification endpoint\n");
 297                         dev->status = NULL;
 298                 }
 299         }
 300         if (rndis && !dev->status) {
 301                 dev_dbg(&intf->dev, "missing RNDIS status endpoint\n");
 302                 usb_set_intfdata(info->data, NULL);
 303                 usb_driver_release_interface(driver, info->data);
 304                 return -ENODEV;
 305         }
 306
 307         /* Some devices don't initialise properly. In particular
 308          * the packet filter is not reset. There are devices that
 309          * don't do reset all the way. So the packet filter should
 310          * be set to a sane initial value.
 311          */
 312         usbnet_cdc_update_filter(dev);
 313
 314         return 0;
 315
 316 bad_desc:
 317         dev_info(&dev->udev->dev, "bad CDC descriptors\n");
 318         return -ENODEV;
 319 }
 320 EXPORT_SYMBOL_GPL(usbnet_generic_cdc_bind);
 321
 322 void usbnet_cdc_unbind(struct usbnet *dev, struct usb_interface *intf)
 323 {
 324         struct cdc_state                *info = (void *) &dev->data;
 325         struct usb_driver               *driver = driver_of(intf);
 326
 327         /* combined interface - nothing  to do */
 328         if (info->data == info->control)
 329                 return;
 330
 331         /* disconnect master --> disconnect slave */
 332         if (intf == info->control && info->data) {
 333                 /* ensure immediate exit from usbnet_disconnect */
 334                 usb_set_intfdata(info->data, NULL);
 335                 usb_driver_release_interface(driver, info->data);
 336                 info->data = NULL;
 337         }
 338
 339         /* and vice versa (just in case) */
 340         else if (intf == info->data && info->control) {
 341                 /* ensure immediate exit from usbnet_disconnect */
 342                 usb_set_intfdata(info->control, NULL);
 343                 usb_driver_release_interface(driver, info->control);
 344                 info->control = NULL;
 345         }
 346 }
 347 EXPORT_SYMBOL_GPL(usbnet_cdc_unbind);
 348
 349 /* Communications Device Class, Ethernet Control model
 350  *
 351  * Takes two interfaces.  The DATA interface is inactive till an altsetting
 352  * is selected.  Configuration data includes class descriptors.  There's
 353  * an optional status endpoint on the control interface.
 354  *
 355  * This should interop with whatever the 2.4 "CDCEther.c" driver
 356  * (by Brad Hards) talked with, with more functionality.
 357  */
 358
 359 static void dumpspeed(struct usbnet *dev, __le32 *speeds)
 360 {
 361         netif_info(dev, timer, dev->net,
 362                    "link speeds: %u kbps up, %u kbps down\n",
 363                    __le32_to_cpu(speeds[0]) / 1000,
 364                    __le32_to_cpu(speeds[1]) / 1000);
 365 }
 366
 367 void usbnet_cdc_status(struct usbnet *dev, struct urb *urb)
 368 {
 369         struct usb_cdc_notification     *event;
 370
 371         if (urb->actual_length < sizeof(*event))
 372                 return;
 373
 374         /* SPEED_CHANGE can get split into two 8-byte packets */
 375         if (test_and_clear_bit(EVENT_STS_SPLIT, &dev->flags)) {
 376                 dumpspeed(dev, (__le32 *) urb->transfer_buffer);
 377                 return;
 378         }
 379
 380         event = urb->transfer_buffer;
 381         switch (event->bNotificationType) {
 382         case USB_CDC_NOTIFY_NETWORK_CONNECTION:
 383                 netif_dbg(dev, timer, dev->net, "CDC: carrier %s\n",
 384                           event->wValue ? "on" : "off");
 385                 usbnet_link_change(dev, !!event->wValue, 0);
 386                 break;
 387         case USB_CDC_NOTIFY_SPEED_CHANGE:       /* tx/rx rates */
 388                 netif_dbg(dev, timer, dev->net, "CDC: speed change (len %d)\n",
 389                           urb->actual_length);
 390                 if (urb->actual_length != (sizeof(*event) + 8))
 391                         set_bit(EVENT_STS_SPLIT, &dev->flags);
 392                 else
 393                         dumpspeed(dev, (__le32 *) &event[1]);
 394                 break;
 395         /* USB_CDC_NOTIFY_RESPONSE_AVAILABLE can happen too (e.g. RNDIS),
 396          * but there are no standard formats for the response data.
 397          */
 398         default:
 399                 netdev_err(dev->net, "CDC: unexpected notification %02x!\n",
 400                            event->bNotificationType);
 401                 break;
 402         }
 403 }
 404 EXPORT_SYMBOL_GPL(usbnet_cdc_status);
 405
 406 int usbnet_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
 407 {
 408         int                             status;
 409         struct cdc_state                *info = (void *) &dev->data;
 410
 411         BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data)
 412                         < sizeof(struct cdc_state)));
 413
 414         status = usbnet_generic_cdc_bind(dev, intf);
 415         if (status < 0)
 416                 return status;
 417
 418         status = usbnet_get_ethernet_addr(dev, info->ether->iMACAddress);
 419         if (status < 0) {
 420                 usb_set_intfdata(info->data, NULL);
 421                 usb_driver_release_interface(driver_of(intf), info->data);
 422                 return status;
 423         }
 424
 425         return 0;
 426 }
 427 EXPORT_SYMBOL_GPL(usbnet_cdc_bind);
 428
 429 static const struct driver_info cdc_info = {
 430         .description =  "CDC Ethernet Device",
 431         .flags =        FLAG_ETHER | FLAG_POINTTOPOINT,
 432         .bind =         usbnet_cdc_bind,
 433         .unbind =       usbnet_cdc_unbind,
 434         .status =       usbnet_cdc_status,
 435         .set_rx_mode =  usbnet_cdc_update_filter,
 436         .manage_power = usbnet_manage_power,
 437 };
 438
 439 static const struct driver_info wwan_info = {
 440         .description =  "Mobile Broadband Network Device",
 441         .flags =        FLAG_WWAN,
 442         .bind =         usbnet_cdc_bind,
 443         .unbind =       usbnet_cdc_unbind,
 444         .status =       usbnet_cdc_status,
 445         .set_rx_mode =  usbnet_cdc_update_filter,
 446         .manage_power = usbnet_manage_power,
 447 };
 448
 449 /*-------------------------------------------------------------------------*/
 450
 451 #define HUAWEI_VENDOR_ID        0x12D1
 452 #define NOVATEL_VENDOR_ID       0x1410
 453 #define ZTE_VENDOR_ID           0x19D2
 454 #define DELL_VENDOR_ID          0x413C
 455 #define REALTEK_VENDOR_ID       0x0bda
 456 #define SAMSUNG_VENDOR_ID       0x04e8
 457 #define LENOVO_VENDOR_ID        0x17ef
 458 #define NVIDIA_VENDOR_ID        0x0955
 459
 460 static const struct usb_device_id       products[] = {
 461 /* BLACKLIST !!
 462  *
 463  * First blacklist any products that are egregiously nonconformant
 464  * with the CDC Ethernet specs.  Minor braindamage we cope with; when
 465  * they're not even trying, needing a separate driver is only the first
 466  * of the differences to show up.
 467  */
 468
 469 #define ZAURUS_MASTER_INTERFACE \
 470         .bInterfaceClass        = USB_CLASS_COMM, \
 471         .bInterfaceSubClass     = USB_CDC_SUBCLASS_ETHERNET, \
 472         .bInterfaceProtocol     = USB_CDC_PROTO_NONE
 473
 474 /* SA-1100 based Sharp Zaurus ("collie"), or compatible;
 475  * wire-incompatible with true CDC Ethernet implementations.
 476  * (And, it seems, needlessly so...)
 477  */
 478 {
 479         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 480                           | USB_DEVICE_ID_MATCH_DEVICE,
 481         .idVendor               = 0x04DD,
 482         .idProduct              = 0x8004,
 483         ZAURUS_MASTER_INTERFACE,
 484         .driver_info            = 0,
 485 },
 486
 487 /* PXA-25x based Sharp Zaurii.  Note that it seems some of these
 488  * (later models especially) may have shipped only with firmware
 489  * advertising false "CDC MDLM" compatibility ... but we're not
 490  * clear which models did that, so for now let's assume the worst.
 491  */
 492 {
 493         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 494                           | USB_DEVICE_ID_MATCH_DEVICE,
 495         .idVendor               = 0x04DD,
 496         .idProduct              = 0x8005,       /* A-300 */
 497         ZAURUS_MASTER_INTERFACE,
 498         .driver_info            = 0,
 499 }, {
 500         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 501                           | USB_DEVICE_ID_MATCH_DEVICE,
 502         .idVendor               = 0x04DD,
 503         .idProduct              = 0x8006,       /* B-500/SL-5600 */
 504         ZAURUS_MASTER_INTERFACE,
 505         .driver_info            = 0,
 506 }, {
 507         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 508                           | USB_DEVICE_ID_MATCH_DEVICE,
 509         .idVendor               = 0x04DD,
 510         .idProduct              = 0x8007,       /* C-700 */
 511         ZAURUS_MASTER_INTERFACE,
 512         .driver_info            = 0,
 513 }, {
 514         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 515                  | USB_DEVICE_ID_MATCH_DEVICE,
 516         .idVendor               = 0x04DD,
 517         .idProduct              = 0x9031,       /* C-750 C-760 */
 518         ZAURUS_MASTER_INTERFACE,
 519         .driver_info            = 0,
 520 }, {
 521         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 522                  | USB_DEVICE_ID_MATCH_DEVICE,
 523         .idVendor               = 0x04DD,
 524         .idProduct              = 0x9032,       /* SL-6000 */
 525         ZAURUS_MASTER_INTERFACE,
 526         .driver_info            = 0,
 527 }, {
 528         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 529                  | USB_DEVICE_ID_MATCH_DEVICE,
 530         .idVendor               = 0x04DD,
 531         /* reported with some C860 units */
 532         .idProduct              = 0x9050,       /* C-860 */
 533         ZAURUS_MASTER_INTERFACE,
 534         .driver_info            = 0,
 535 },
 536
 537 /* Olympus has some models with a Zaurus-compatible option.
 538  * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
 539  */
 540 {
 541         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 542                  | USB_DEVICE_ID_MATCH_DEVICE,
 543         .idVendor               = 0x07B4,
 544         .idProduct              = 0x0F02,       /* R-1000 */
 545         ZAURUS_MASTER_INTERFACE,
 546         .driver_info            = 0,
 547 },
 548
 549 /* LG Electronics VL600 wants additional headers on every frame */
 550 {
 551         USB_DEVICE_AND_INTERFACE_INFO(0x1004, 0x61aa, USB_CLASS_COMM,
 552                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 553         .driver_info = 0,
 554 },
 555
 556 /* Logitech Harmony 900 - uses the pseudo-MDLM (BLAN) driver */
 557 {
 558         USB_DEVICE_AND_INTERFACE_INFO(0x046d, 0xc11f, USB_CLASS_COMM,
 559                         USB_CDC_SUBCLASS_MDLM, USB_CDC_PROTO_NONE),
 560         .driver_info            = 0,
 561 },
 562
 563 /* Novatel USB551L and MC551 - handled by qmi_wwan */
 564 {
 565         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0xB001, USB_CLASS_COMM,
 566                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 567         .driver_info = 0,
 568 },
 569
 570 /* Novatel E362 - handled by qmi_wwan */
 571 {
 572         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9010, USB_CLASS_COMM,
 573                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 574         .driver_info = 0,
 575 },
 576
 577 /* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
 578 {
 579         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8195, USB_CLASS_COMM,
 580                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 581         .driver_info = 0,
 582 },
 583
 584 /* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
 585 {
 586         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8196, USB_CLASS_COMM,
 587                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 588         .driver_info = 0,
 589 },
 590
 591 /* Dell Wireless 5804 (Novatel E371) - handled by qmi_wwan */
 592 {
 593         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x819b, USB_CLASS_COMM,
 594                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 595         .driver_info = 0,
 596 },
 597
 598 /* Novatel Expedite E371 - handled by qmi_wwan */
 599 {
 600         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9011, USB_CLASS_COMM,
 601                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 602         .driver_info = 0,
 603 },
 604
 605 /* AnyDATA ADU960S - handled by qmi_wwan */
 606 {
 607         USB_DEVICE_AND_INTERFACE_INFO(0x16d5, 0x650a, USB_CLASS_COMM,
 608                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 609         .driver_info = 0,
 610 },
 611
 612 /* Huawei E1820 - handled by qmi_wwan */
 613 {
 614         USB_DEVICE_INTERFACE_NUMBER(HUAWEI_VENDOR_ID, 0x14ac, 1),
 615         .driver_info = 0,
 616 },
 617
 618 /* Realtek RTL8152 Based USB 2.0 Ethernet Adapters */
 619 {
 620         USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8152, USB_CLASS_COMM,
 621                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 622         .driver_info = 0,
 623 },
 624
 625 /* Realtek RTL8153 Based USB 3.0 Ethernet Adapters */
 626 {
 627         USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8153, USB_CLASS_COMM,
 628                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 629         .driver_info = 0,
 630 },
 631
 632 /* Samsung USB Ethernet Adapters */
 633 {
 634         USB_DEVICE_AND_INTERFACE_INFO(SAMSUNG_VENDOR_ID, 0xa101, USB_CLASS_COMM,
 635                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 636         .driver_info = 0,
 637 },
 638
 639 /* Lenovo Thinkpad USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */
 640 {
 641         USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x7205, USB_CLASS_COMM,
 642                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 643         .driver_info = 0,
 644 },
 645
 646 /* NVIDIA Tegra USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */
 647 {
 648         USB_DEVICE_AND_INTERFACE_INFO(NVIDIA_VENDOR_ID, 0x09ff, USB_CLASS_COMM,
 649                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 650         .driver_info = 0,
 651 },
 652
 653 /* WHITELIST!!!
 654  *
 655  * CDC Ether uses two interfaces, not necessarily consecutive.
 656  * We match the main interface, ignoring the optional device
 657  * class so we could handle devices that aren't exclusively
 658  * CDC ether.
 659  *
 660  * NOTE:  this match must come AFTER entries blacklisting devices
 661  * because of bugs/quirks in a given product (like Zaurus, above).
 662  */
 663 {
 664         /* ZTE (Vodafone) K3805-Z */
 665         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1003, USB_CLASS_COMM,
 666                                       USB_CDC_SUBCLASS_ETHERNET,
 667                                       USB_CDC_PROTO_NONE),
 668         .driver_info = (unsigned long)&wwan_info,
 669 }, {
 670         /* ZTE (Vodafone) K3806-Z */
 671         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1015, USB_CLASS_COMM,
 672                                       USB_CDC_SUBCLASS_ETHERNET,
 673                                       USB_CDC_PROTO_NONE),
 674         .driver_info = (unsigned long)&wwan_info,
 675 }, {
 676         /* ZTE (Vodafone) K4510-Z */
 677         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1173, USB_CLASS_COMM,
 678                                       USB_CDC_SUBCLASS_ETHERNET,
 679                                       USB_CDC_PROTO_NONE),
 680         .driver_info = (unsigned long)&wwan_info,
 681 }, {
 682         /* ZTE (Vodafone) K3770-Z */
 683         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1177, USB_CLASS_COMM,
 684                                       USB_CDC_SUBCLASS_ETHERNET,
 685                                       USB_CDC_PROTO_NONE),
 686         .driver_info = (unsigned long)&wwan_info,
 687 }, {
 688         /* ZTE (Vodafone) K3772-Z */
 689         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1181, USB_CLASS_COMM,
 690                                       USB_CDC_SUBCLASS_ETHERNET,
 691                                       USB_CDC_PROTO_NONE),
 692         .driver_info = (unsigned long)&wwan_info,
 693 }, {
 694         /* Telit modules */
 695         USB_VENDOR_AND_INTERFACE_INFO(0x1bc7, USB_CLASS_COMM,
 696                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 697         .driver_info = (kernel_ulong_t) &wwan_info,
 698 }, {
 699         /* Dell DW5580 modules */
 700         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x81ba, USB_CLASS_COMM,
 701                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 702         .driver_info = (kernel_ulong_t)&wwan_info,
 703 }, {
 704         USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
 705                         USB_CDC_PROTO_NONE),
 706         .driver_info = (unsigned long) &cdc_info,
 707 }, {
 708         USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
 709                         USB_CDC_PROTO_NONE),
 710         .driver_info = (unsigned long)&wwan_info,
 711
 712 }, {
 713         /* Various Huawei modems with a network port like the UMG1831 */
 714         USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_COMM,
 715                                       USB_CDC_SUBCLASS_ETHERNET, 255),
 716         .driver_info = (unsigned long)&wwan_info,
 717 },
 718         { },            /* END */
 719 };
 720 MODULE_DEVICE_TABLE(usb, products);
 721
 722 static struct usb_driver cdc_driver = {
 723         .name =         "cdc_ether",
 724         .id_table =     products,
 725         .probe =        usbnet_probe,
 726         .disconnect =   usbnet_disconnect,
 727         .suspend =      usbnet_suspend,
 728         .resume =       usbnet_resume,
 729         .reset_resume = usbnet_resume,
 730         .supports_autosuspend = 1,
 731         .disable_hub_initiated_lpm = 1,
 732 };
 733
 734 module_usb_driver(cdc_driver);
 735
 736 MODULE_AUTHOR("David Brownell");
 737 MODULE_DESCRIPTION("USB CDC Ethernet devices");
 738 MODULE_LICENSE("GPL");