Version:  2.0.40 2.2.26 2.4.37 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18

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 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");
785 

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