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Linux/drivers/net/usb/cdc_ether.c

  1 /*
  2  * CDC Ethernet based networking peripherals
  3  * Copyright (C) 2003-2005 by David Brownell
  4  * Copyright (C) 2006 by Ole Andre Vadla Ravnas (ActiveSync)
  5  *
  6  * This program is free software; you can redistribute it and/or modify
  7  * it under the terms of the GNU General Public License as published by
  8  * the Free Software Foundation; either version 2 of the License, or
  9  * (at your option) any later version.
 10  *
 11  * This program is distributed in the hope that it will be useful,
 12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 14  * GNU General Public License for more details.
 15  *
 16  * You should have received a copy of the GNU General Public License
 17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
 18  */
 19 
 20 // #define      DEBUG                   // error path messages, extra info
 21 // #define      VERBOSE                 // more; success messages
 22 
 23 #include <linux/module.h>
 24 #include <linux/netdevice.h>
 25 #include <linux/etherdevice.h>
 26 #include <linux/ethtool.h>
 27 #include <linux/workqueue.h>
 28 #include <linux/mii.h>
 29 #include <linux/usb.h>
 30 #include <linux/usb/cdc.h>
 31 #include <linux/usb/usbnet.h>
 32 
 33 
 34 #if IS_ENABLED(CONFIG_USB_NET_RNDIS_HOST)
 35 
 36 static int is_rndis(struct usb_interface_descriptor *desc)
 37 {
 38         return (desc->bInterfaceClass == USB_CLASS_COMM &&
 39                 desc->bInterfaceSubClass == 2 &&
 40                 desc->bInterfaceProtocol == 0xff);
 41 }
 42 
 43 static int is_activesync(struct usb_interface_descriptor *desc)
 44 {
 45         return (desc->bInterfaceClass == USB_CLASS_MISC &&
 46                 desc->bInterfaceSubClass == 1 &&
 47                 desc->bInterfaceProtocol == 1);
 48 }
 49 
 50 static int is_wireless_rndis(struct usb_interface_descriptor *desc)
 51 {
 52         return (desc->bInterfaceClass == USB_CLASS_WIRELESS_CONTROLLER &&
 53                 desc->bInterfaceSubClass == 1 &&
 54                 desc->bInterfaceProtocol == 3);
 55 }
 56 
 57 #else
 58 
 59 #define is_rndis(desc)          0
 60 #define is_activesync(desc)     0
 61 #define is_wireless_rndis(desc) 0
 62 
 63 #endif
 64 
 65 static const u8 mbm_guid[16] = {
 66         0xa3, 0x17, 0xa8, 0x8b, 0x04, 0x5e, 0x4f, 0x01,
 67         0xa6, 0x07, 0xc0, 0xff, 0xcb, 0x7e, 0x39, 0x2a,
 68 };
 69 
 70 /* probes control interface, claims data interface, collects the bulk
 71  * endpoints, activates data interface (if needed), maybe sets MTU.
 72  * all pure cdc, except for certain firmware workarounds, and knowing
 73  * that rndis uses one different rule.
 74  */
 75 int usbnet_generic_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
 76 {
 77         u8                              *buf = intf->cur_altsetting->extra;
 78         int                             len = intf->cur_altsetting->extralen;
 79         struct usb_interface_descriptor *d;
 80         struct cdc_state                *info = (void *) &dev->data;
 81         int                             status;
 82         int                             rndis;
 83         bool                            android_rndis_quirk = false;
 84         struct usb_driver               *driver = driver_of(intf);
 85         struct usb_cdc_mdlm_desc        *desc = NULL;
 86         struct usb_cdc_mdlm_detail_desc *detail = NULL;
 87 
 88         if (sizeof(dev->data) < sizeof(*info))
 89                 return -EDOM;
 90 
 91         /* expect strict spec conformance for the descriptors, but
 92          * cope with firmware which stores them in the wrong place
 93          */
 94         if (len == 0 && dev->udev->actconfig->extralen) {
 95                 /* Motorola SB4100 (and others: Brad Hards says it's
 96                  * from a Broadcom design) put CDC descriptors here
 97                  */
 98                 buf = dev->udev->actconfig->extra;
 99                 len = dev->udev->actconfig->extralen;
100                 dev_dbg(&intf->dev, "CDC descriptors on config\n");
101         }
102 
103         /* Maybe CDC descriptors are after the endpoint?  This bug has
104          * been seen on some 2Wire Inc RNDIS-ish products.
105          */
106         if (len == 0) {
107                 struct usb_host_endpoint        *hep;
108 
109                 hep = intf->cur_altsetting->endpoint;
110                 if (hep) {
111                         buf = hep->extra;
112                         len = hep->extralen;
113                 }
114                 if (len)
115                         dev_dbg(&intf->dev,
116                                 "CDC descriptors on endpoint\n");
117         }
118 
119         /* this assumes that if there's a non-RNDIS vendor variant
120          * of cdc-acm, it'll fail RNDIS requests cleanly.
121          */
122         rndis = (is_rndis(&intf->cur_altsetting->desc) ||
123                  is_activesync(&intf->cur_altsetting->desc) ||
124                  is_wireless_rndis(&intf->cur_altsetting->desc));
125 
126         memset(info, 0, sizeof(*info));
127         info->control = intf;
128         while (len > 3) {
129                 if (buf[1] != USB_DT_CS_INTERFACE)
130                         goto next_desc;
131 
132                 /* use bDescriptorSubType to identify the CDC descriptors.
133                  * We expect devices with CDC header and union descriptors.
134                  * For CDC Ethernet we need the ethernet descriptor.
135                  * For RNDIS, ignore two (pointless) CDC modem descriptors
136                  * in favor of a complicated OID-based RPC scheme doing what
137                  * CDC Ethernet achieves with a simple descriptor.
138                  */
139                 switch (buf[2]) {
140                 case USB_CDC_HEADER_TYPE:
141                         if (info->header) {
142                                 dev_dbg(&intf->dev, "extra CDC header\n");
143                                 goto bad_desc;
144                         }
145                         info->header = (void *) buf;
146                         if (info->header->bLength != sizeof(*info->header)) {
147                                 dev_dbg(&intf->dev, "CDC header len %u\n",
148                                         info->header->bLength);
149                                 goto bad_desc;
150                         }
151                         break;
152                 case USB_CDC_ACM_TYPE:
153                         /* paranoia:  disambiguate a "real" vendor-specific
154                          * modem interface from an RNDIS non-modem.
155                          */
156                         if (rndis) {
157                                 struct usb_cdc_acm_descriptor *acm;
158 
159                                 acm = (void *) buf;
160                                 if (acm->bmCapabilities) {
161                                         dev_dbg(&intf->dev,
162                                                 "ACM capabilities %02x, "
163                                                 "not really RNDIS?\n",
164                                                 acm->bmCapabilities);
165                                         goto bad_desc;
166                                 }
167                         }
168                         break;
169                 case USB_CDC_UNION_TYPE:
170                         if (info->u) {
171                                 dev_dbg(&intf->dev, "extra CDC union\n");
172                                 goto bad_desc;
173                         }
174                         info->u = (void *) buf;
175                         if (info->u->bLength != sizeof(*info->u)) {
176                                 dev_dbg(&intf->dev, "CDC union len %u\n",
177                                         info->u->bLength);
178                                 goto bad_desc;
179                         }
180 
181                         /* we need a master/control interface (what we're
182                          * probed with) and a slave/data interface; union
183                          * descriptors sort this all out.
184                          */
185                         info->control = usb_ifnum_to_if(dev->udev,
186                                                 info->u->bMasterInterface0);
187                         info->data = usb_ifnum_to_if(dev->udev,
188                                                 info->u->bSlaveInterface0);
189                         if (!info->control || !info->data) {
190                                 dev_dbg(&intf->dev,
191                                         "master #%u/%p slave #%u/%p\n",
192                                         info->u->bMasterInterface0,
193                                         info->control,
194                                         info->u->bSlaveInterface0,
195                                         info->data);
196                                 /* fall back to hard-wiring for RNDIS */
197                                 if (rndis) {
198                                         android_rndis_quirk = true;
199                                         goto next_desc;
200                                 }
201                                 goto bad_desc;
202                         }
203                         if (info->control != intf) {
204                                 dev_dbg(&intf->dev, "bogus CDC Union\n");
205                                 /* Ambit USB Cable Modem (and maybe others)
206                                  * interchanges master and slave interface.
207                                  */
208                                 if (info->data == intf) {
209                                         info->data = info->control;
210                                         info->control = intf;
211                                 } else
212                                         goto bad_desc;
213                         }
214 
215                         /* some devices merge these - skip class check */
216                         if (info->control == info->data)
217                                 goto next_desc;
218 
219                         /* a data interface altsetting does the real i/o */
220                         d = &info->data->cur_altsetting->desc;
221                         if (d->bInterfaceClass != USB_CLASS_CDC_DATA) {
222                                 dev_dbg(&intf->dev, "slave class %u\n",
223                                         d->bInterfaceClass);
224                                 goto bad_desc;
225                         }
226                         break;
227                 case USB_CDC_ETHERNET_TYPE:
228                         if (info->ether) {
229                                 dev_dbg(&intf->dev, "extra CDC ether\n");
230                                 goto bad_desc;
231                         }
232                         info->ether = (void *) buf;
233                         if (info->ether->bLength != sizeof(*info->ether)) {
234                                 dev_dbg(&intf->dev, "CDC ether len %u\n",
235                                         info->ether->bLength);
236                                 goto bad_desc;
237                         }
238                         dev->hard_mtu = le16_to_cpu(
239                                                 info->ether->wMaxSegmentSize);
240                         /* because of Zaurus, we may be ignoring the host
241                          * side link address we were given.
242                          */
243                         break;
244                 case USB_CDC_MDLM_TYPE:
245                         if (desc) {
246                                 dev_dbg(&intf->dev, "extra MDLM descriptor\n");
247                                 goto bad_desc;
248                         }
249 
250                         desc = (void *)buf;
251 
252                         if (desc->bLength != sizeof(*desc))
253                                 goto bad_desc;
254 
255                         if (memcmp(&desc->bGUID, mbm_guid, 16))
256                                 goto bad_desc;
257                         break;
258                 case USB_CDC_MDLM_DETAIL_TYPE:
259                         if (detail) {
260                                 dev_dbg(&intf->dev, "extra MDLM detail descriptor\n");
261                                 goto bad_desc;
262                         }
263 
264                         detail = (void *)buf;
265 
266                         if (detail->bGuidDescriptorType == 0) {
267                                 if (detail->bLength < (sizeof(*detail) + 1))
268                                         goto bad_desc;
269                         } else
270                                 goto bad_desc;
271                         break;
272                 }
273 next_desc:
274                 len -= buf[0];  /* bLength */
275                 buf += buf[0];
276         }
277 
278         /* Microsoft ActiveSync based and some regular RNDIS devices lack the
279          * CDC descriptors, so we'll hard-wire the interfaces and not check
280          * for descriptors.
281          *
282          * Some Android RNDIS devices have a CDC Union descriptor pointing
283          * to non-existing interfaces.  Ignore that and attempt the same
284          * hard-wired 0 and 1 interfaces.
285          */
286         if (rndis && (!info->u || android_rndis_quirk)) {
287                 info->control = usb_ifnum_to_if(dev->udev, 0);
288                 info->data = usb_ifnum_to_if(dev->udev, 1);
289                 if (!info->control || !info->data || info->control != intf) {
290                         dev_dbg(&intf->dev,
291                                 "rndis: master #0/%p slave #1/%p\n",
292                                 info->control,
293                                 info->data);
294                         goto bad_desc;
295                 }
296 
297         } else if (!info->header || !info->u || (!rndis && !info->ether)) {
298                 dev_dbg(&intf->dev, "missing cdc %s%s%sdescriptor\n",
299                         info->header ? "" : "header ",
300                         info->u ? "" : "union ",
301                         info->ether ? "" : "ether ");
302                 goto bad_desc;
303         }
304 
305         /* claim data interface and set it up ... with side effects.
306          * network traffic can't flow until an altsetting is enabled.
307          */
308         if (info->data != info->control) {
309                 status = usb_driver_claim_interface(driver, info->data, dev);
310                 if (status < 0)
311                         return status;
312         }
313         status = usbnet_get_endpoints(dev, info->data);
314         if (status < 0) {
315                 /* ensure immediate exit from usbnet_disconnect */
316                 usb_set_intfdata(info->data, NULL);
317                 if (info->data != info->control)
318                         usb_driver_release_interface(driver, info->data);
319                 return status;
320         }
321 
322         /* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */
323         if (info->data != info->control)
324                 dev->status = NULL;
325         if (info->control->cur_altsetting->desc.bNumEndpoints == 1) {
326                 struct usb_endpoint_descriptor  *desc;
327 
328                 dev->status = &info->control->cur_altsetting->endpoint [0];
329                 desc = &dev->status->desc;
330                 if (!usb_endpoint_is_int_in(desc) ||
331                     (le16_to_cpu(desc->wMaxPacketSize)
332                      < sizeof(struct usb_cdc_notification)) ||
333                     !desc->bInterval) {
334                         dev_dbg(&intf->dev, "bad notification endpoint\n");
335                         dev->status = NULL;
336                 }
337         }
338         if (rndis && !dev->status) {
339                 dev_dbg(&intf->dev, "missing RNDIS status endpoint\n");
340                 usb_set_intfdata(info->data, NULL);
341                 usb_driver_release_interface(driver, info->data);
342                 return -ENODEV;
343         }
344         return 0;
345 
346 bad_desc:
347         dev_info(&dev->udev->dev, "bad CDC descriptors\n");
348         return -ENODEV;
349 }
350 EXPORT_SYMBOL_GPL(usbnet_generic_cdc_bind);
351 
352 void usbnet_cdc_unbind(struct usbnet *dev, struct usb_interface *intf)
353 {
354         struct cdc_state                *info = (void *) &dev->data;
355         struct usb_driver               *driver = driver_of(intf);
356 
357         /* combined interface - nothing  to do */
358         if (info->data == info->control)
359                 return;
360 
361         /* disconnect master --> disconnect slave */
362         if (intf == info->control && info->data) {
363                 /* ensure immediate exit from usbnet_disconnect */
364                 usb_set_intfdata(info->data, NULL);
365                 usb_driver_release_interface(driver, info->data);
366                 info->data = NULL;
367         }
368 
369         /* and vice versa (just in case) */
370         else if (intf == info->data && info->control) {
371                 /* ensure immediate exit from usbnet_disconnect */
372                 usb_set_intfdata(info->control, NULL);
373                 usb_driver_release_interface(driver, info->control);
374                 info->control = NULL;
375         }
376 }
377 EXPORT_SYMBOL_GPL(usbnet_cdc_unbind);
378 
379 /* Communications Device Class, Ethernet Control model
380  *
381  * Takes two interfaces.  The DATA interface is inactive till an altsetting
382  * is selected.  Configuration data includes class descriptors.  There's
383  * an optional status endpoint on the control interface.
384  *
385  * This should interop with whatever the 2.4 "CDCEther.c" driver
386  * (by Brad Hards) talked with, with more functionality.
387  */
388 
389 static void dumpspeed(struct usbnet *dev, __le32 *speeds)
390 {
391         netif_info(dev, timer, dev->net,
392                    "link speeds: %u kbps up, %u kbps down\n",
393                    __le32_to_cpu(speeds[0]) / 1000,
394                    __le32_to_cpu(speeds[1]) / 1000);
395 }
396 
397 void usbnet_cdc_status(struct usbnet *dev, struct urb *urb)
398 {
399         struct usb_cdc_notification     *event;
400 
401         if (urb->actual_length < sizeof(*event))
402                 return;
403 
404         /* SPEED_CHANGE can get split into two 8-byte packets */
405         if (test_and_clear_bit(EVENT_STS_SPLIT, &dev->flags)) {
406                 dumpspeed(dev, (__le32 *) urb->transfer_buffer);
407                 return;
408         }
409 
410         event = urb->transfer_buffer;
411         switch (event->bNotificationType) {
412         case USB_CDC_NOTIFY_NETWORK_CONNECTION:
413                 netif_dbg(dev, timer, dev->net, "CDC: carrier %s\n",
414                           event->wValue ? "on" : "off");
415                 usbnet_link_change(dev, !!event->wValue, 0);
416                 break;
417         case USB_CDC_NOTIFY_SPEED_CHANGE:       /* tx/rx rates */
418                 netif_dbg(dev, timer, dev->net, "CDC: speed change (len %d)\n",
419                           urb->actual_length);
420                 if (urb->actual_length != (sizeof(*event) + 8))
421                         set_bit(EVENT_STS_SPLIT, &dev->flags);
422                 else
423                         dumpspeed(dev, (__le32 *) &event[1]);
424                 break;
425         /* USB_CDC_NOTIFY_RESPONSE_AVAILABLE can happen too (e.g. RNDIS),
426          * but there are no standard formats for the response data.
427          */
428         default:
429                 netdev_err(dev->net, "CDC: unexpected notification %02x!\n",
430                            event->bNotificationType);
431                 break;
432         }
433 }
434 EXPORT_SYMBOL_GPL(usbnet_cdc_status);
435 
436 int usbnet_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
437 {
438         int                             status;
439         struct cdc_state                *info = (void *) &dev->data;
440 
441         BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data)
442                         < sizeof(struct cdc_state)));
443 
444         status = usbnet_generic_cdc_bind(dev, intf);
445         if (status < 0)
446                 return status;
447 
448         status = usbnet_get_ethernet_addr(dev, info->ether->iMACAddress);
449         if (status < 0) {
450                 usb_set_intfdata(info->data, NULL);
451                 usb_driver_release_interface(driver_of(intf), info->data);
452                 return status;
453         }
454 
455         /* FIXME cdc-ether has some multicast code too, though it complains
456          * in routine cases.  info->ether describes the multicast support.
457          * Implement that here, manipulating the cdc filter as needed.
458          */
459         return 0;
460 }
461 EXPORT_SYMBOL_GPL(usbnet_cdc_bind);
462 
463 static const struct driver_info cdc_info = {
464         .description =  "CDC Ethernet Device",
465         .flags =        FLAG_ETHER | FLAG_POINTTOPOINT,
466         .bind =         usbnet_cdc_bind,
467         .unbind =       usbnet_cdc_unbind,
468         .status =       usbnet_cdc_status,
469         .manage_power = usbnet_manage_power,
470 };
471 
472 static const struct driver_info wwan_info = {
473         .description =  "Mobile Broadband Network Device",
474         .flags =        FLAG_WWAN,
475         .bind =         usbnet_cdc_bind,
476         .unbind =       usbnet_cdc_unbind,
477         .status =       usbnet_cdc_status,
478         .manage_power = usbnet_manage_power,
479 };
480 
481 /*-------------------------------------------------------------------------*/
482 
483 #define HUAWEI_VENDOR_ID        0x12D1
484 #define NOVATEL_VENDOR_ID       0x1410
485 #define ZTE_VENDOR_ID           0x19D2
486 #define DELL_VENDOR_ID          0x413C
487 #define REALTEK_VENDOR_ID       0x0bda
488 #define SAMSUNG_VENDOR_ID       0x04e8
489 
490 static const struct usb_device_id       products[] = {
491 /* BLACKLIST !!
492  *
493  * First blacklist any products that are egregiously nonconformant
494  * with the CDC Ethernet specs.  Minor braindamage we cope with; when
495  * they're not even trying, needing a separate driver is only the first
496  * of the differences to show up.
497  */
498 
499 #define ZAURUS_MASTER_INTERFACE \
500         .bInterfaceClass        = USB_CLASS_COMM, \
501         .bInterfaceSubClass     = USB_CDC_SUBCLASS_ETHERNET, \
502         .bInterfaceProtocol     = USB_CDC_PROTO_NONE
503 
504 /* SA-1100 based Sharp Zaurus ("collie"), or compatible;
505  * wire-incompatible with true CDC Ethernet implementations.
506  * (And, it seems, needlessly so...)
507  */
508 {
509         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
510                           | USB_DEVICE_ID_MATCH_DEVICE,
511         .idVendor               = 0x04DD,
512         .idProduct              = 0x8004,
513         ZAURUS_MASTER_INTERFACE,
514         .driver_info            = 0,
515 },
516 
517 /* PXA-25x based Sharp Zaurii.  Note that it seems some of these
518  * (later models especially) may have shipped only with firmware
519  * advertising false "CDC MDLM" compatibility ... but we're not
520  * clear which models did that, so for now let's assume the worst.
521  */
522 {
523         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
524                           | USB_DEVICE_ID_MATCH_DEVICE,
525         .idVendor               = 0x04DD,
526         .idProduct              = 0x8005,       /* A-300 */
527         ZAURUS_MASTER_INTERFACE,
528         .driver_info            = 0,
529 }, {
530         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
531                           | USB_DEVICE_ID_MATCH_DEVICE,
532         .idVendor               = 0x04DD,
533         .idProduct              = 0x8006,       /* B-500/SL-5600 */
534         ZAURUS_MASTER_INTERFACE,
535         .driver_info            = 0,
536 }, {
537         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
538                           | USB_DEVICE_ID_MATCH_DEVICE,
539         .idVendor               = 0x04DD,
540         .idProduct              = 0x8007,       /* C-700 */
541         ZAURUS_MASTER_INTERFACE,
542         .driver_info            = 0,
543 }, {
544         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
545                  | USB_DEVICE_ID_MATCH_DEVICE,
546         .idVendor               = 0x04DD,
547         .idProduct              = 0x9031,       /* C-750 C-760 */
548         ZAURUS_MASTER_INTERFACE,
549         .driver_info            = 0,
550 }, {
551         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
552                  | USB_DEVICE_ID_MATCH_DEVICE,
553         .idVendor               = 0x04DD,
554         .idProduct              = 0x9032,       /* SL-6000 */
555         ZAURUS_MASTER_INTERFACE,
556         .driver_info            = 0,
557 }, {
558         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
559                  | USB_DEVICE_ID_MATCH_DEVICE,
560         .idVendor               = 0x04DD,
561         /* reported with some C860 units */
562         .idProduct              = 0x9050,       /* C-860 */
563         ZAURUS_MASTER_INTERFACE,
564         .driver_info            = 0,
565 },
566 
567 /* Olympus has some models with a Zaurus-compatible option.
568  * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
569  */
570 {
571         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
572                  | USB_DEVICE_ID_MATCH_DEVICE,
573         .idVendor               = 0x07B4,
574         .idProduct              = 0x0F02,       /* R-1000 */
575         ZAURUS_MASTER_INTERFACE,
576         .driver_info            = 0,
577 },
578 
579 /* LG Electronics VL600 wants additional headers on every frame */
580 {
581         USB_DEVICE_AND_INTERFACE_INFO(0x1004, 0x61aa, USB_CLASS_COMM,
582                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
583         .driver_info = 0,
584 },
585 
586 /* Logitech Harmony 900 - uses the pseudo-MDLM (BLAN) driver */
587 {
588         USB_DEVICE_AND_INTERFACE_INFO(0x046d, 0xc11f, USB_CLASS_COMM,
589                         USB_CDC_SUBCLASS_MDLM, USB_CDC_PROTO_NONE),
590         .driver_info            = 0,
591 },
592 
593 /* Novatel USB551L and MC551 - handled by qmi_wwan */
594 {
595         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0xB001, USB_CLASS_COMM,
596                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
597         .driver_info = 0,
598 },
599 
600 /* Novatel E362 - handled by qmi_wwan */
601 {
602         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9010, USB_CLASS_COMM,
603                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
604         .driver_info = 0,
605 },
606 
607 /* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
608 {
609         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8195, USB_CLASS_COMM,
610                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
611         .driver_info = 0,
612 },
613 
614 /* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
615 {
616         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8196, USB_CLASS_COMM,
617                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
618         .driver_info = 0,
619 },
620 
621 /* Dell Wireless 5804 (Novatel E371) - handled by qmi_wwan */
622 {
623         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x819b, USB_CLASS_COMM,
624                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
625         .driver_info = 0,
626 },
627 
628 /* AnyDATA ADU960S - handled by qmi_wwan */
629 {
630         USB_DEVICE_AND_INTERFACE_INFO(0x16d5, 0x650a, USB_CLASS_COMM,
631                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
632         .driver_info = 0,
633 },
634 
635 /* Huawei E1820 - handled by qmi_wwan */
636 {
637         USB_DEVICE_INTERFACE_NUMBER(HUAWEI_VENDOR_ID, 0x14ac, 1),
638         .driver_info = 0,
639 },
640 
641 /* Realtek RTL8152 Based USB 2.0 Ethernet Adapters */
642 {
643         USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8152, USB_CLASS_COMM,
644                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
645         .driver_info = 0,
646 },
647 
648 /* Realtek RTL8153 Based USB 3.0 Ethernet Adapters */
649 {
650         USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8153, USB_CLASS_COMM,
651                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
652         .driver_info = 0,
653 },
654 
655 /* Samsung USB Ethernet Adapters */
656 {
657         USB_DEVICE_AND_INTERFACE_INFO(SAMSUNG_VENDOR_ID, 0xa101, USB_CLASS_COMM,
658                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
659         .driver_info = 0,
660 },
661 
662 /* WHITELIST!!!
663  *
664  * CDC Ether uses two interfaces, not necessarily consecutive.
665  * We match the main interface, ignoring the optional device
666  * class so we could handle devices that aren't exclusively
667  * CDC ether.
668  *
669  * NOTE:  this match must come AFTER entries blacklisting devices
670  * because of bugs/quirks in a given product (like Zaurus, above).
671  */
672 {
673         /* ZTE (Vodafone) K3805-Z */
674         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1003, USB_CLASS_COMM,
675                                       USB_CDC_SUBCLASS_ETHERNET,
676                                       USB_CDC_PROTO_NONE),
677         .driver_info = (unsigned long)&wwan_info,
678 }, {
679         /* ZTE (Vodafone) K3806-Z */
680         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1015, USB_CLASS_COMM,
681                                       USB_CDC_SUBCLASS_ETHERNET,
682                                       USB_CDC_PROTO_NONE),
683         .driver_info = (unsigned long)&wwan_info,
684 }, {
685         /* ZTE (Vodafone) K4510-Z */
686         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1173, USB_CLASS_COMM,
687                                       USB_CDC_SUBCLASS_ETHERNET,
688                                       USB_CDC_PROTO_NONE),
689         .driver_info = (unsigned long)&wwan_info,
690 }, {
691         /* ZTE (Vodafone) K3770-Z */
692         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1177, USB_CLASS_COMM,
693                                       USB_CDC_SUBCLASS_ETHERNET,
694                                       USB_CDC_PROTO_NONE),
695         .driver_info = (unsigned long)&wwan_info,
696 }, {
697         /* ZTE (Vodafone) K3772-Z */
698         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1181, USB_CLASS_COMM,
699                                       USB_CDC_SUBCLASS_ETHERNET,
700                                       USB_CDC_PROTO_NONE),
701         .driver_info = (unsigned long)&wwan_info,
702 }, {
703         /* Telit modules */
704         USB_VENDOR_AND_INTERFACE_INFO(0x1bc7, USB_CLASS_COMM,
705                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
706         .driver_info = (kernel_ulong_t) &wwan_info,
707 }, {
708         USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
709                         USB_CDC_PROTO_NONE),
710         .driver_info = (unsigned long) &cdc_info,
711 }, {
712         USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
713                         USB_CDC_PROTO_NONE),
714         .driver_info = (unsigned long)&wwan_info,
715 
716 }, {
717         /* Various Huawei modems with a network port like the UMG1831 */
718         USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_COMM,
719                                       USB_CDC_SUBCLASS_ETHERNET, 255),
720         .driver_info = (unsigned long)&wwan_info,
721 },
722         { },            /* END */
723 };
724 MODULE_DEVICE_TABLE(usb, products);
725 
726 static struct usb_driver cdc_driver = {
727         .name =         "cdc_ether",
728         .id_table =     products,
729         .probe =        usbnet_probe,
730         .disconnect =   usbnet_disconnect,
731         .suspend =      usbnet_suspend,
732         .resume =       usbnet_resume,
733         .reset_resume = usbnet_resume,
734         .supports_autosuspend = 1,
735         .disable_hub_initiated_lpm = 1,
736 };
737 
738 module_usb_driver(cdc_driver);
739 
740 MODULE_AUTHOR("David Brownell");
741 MODULE_DESCRIPTION("USB CDC Ethernet devices");
742 MODULE_LICENSE("GPL");
743 

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