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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 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         if (!info->u) {
164                 if (rndis)
165                         goto skip;
166                 else /* in that case a quirk is mandatory */
167                         goto bad_desc;
168         }
169         /* we need a master/control interface (what we're
170          * probed with) and a slave/data interface; union
171          * descriptors sort this all out.
172          */
173         info->control = usb_ifnum_to_if(dev->udev,
174         info->u->bMasterInterface0);
175         info->data = usb_ifnum_to_if(dev->udev,
176                 info->u->bSlaveInterface0);
177         if (!info->control || !info->data) {
178                 dev_dbg(&intf->dev,
179                         "master #%u/%p slave #%u/%p\n",
180                         info->u->bMasterInterface0,
181                         info->control,
182                         info->u->bSlaveInterface0,
183                         info->data);
184                 /* fall back to hard-wiring for RNDIS */
185                 if (rndis) {
186                         android_rndis_quirk = true;
187                         goto skip;
188                 }
189                 goto bad_desc;
190         }
191         if (info->control != intf) {
192                 dev_dbg(&intf->dev, "bogus CDC Union\n");
193                 /* Ambit USB Cable Modem (and maybe others)
194                  * interchanges master and slave interface.
195                  */
196                 if (info->data == intf) {
197                         info->data = info->control;
198                         info->control = intf;
199                 } else
200                         goto bad_desc;
201         }
202 
203         /* some devices merge these - skip class check */
204         if (info->control == info->data)
205                 goto skip;
206 
207         /* a data interface altsetting does the real i/o */
208         d = &info->data->cur_altsetting->desc;
209         if (d->bInterfaceClass != USB_CLASS_CDC_DATA) {
210                 dev_dbg(&intf->dev, "slave class %u\n",
211                         d->bInterfaceClass);
212                 goto bad_desc;
213         }
214 skip:
215         if (    rndis &&
216                 header.usb_cdc_acm_descriptor &&
217                 header.usb_cdc_acm_descriptor->bmCapabilities) {
218                         dev_dbg(&intf->dev,
219                                 "ACM capabilities %02x, not really RNDIS?\n",
220                                 header.usb_cdc_acm_descriptor->bmCapabilities);
221                         goto bad_desc;
222         }
223 
224         if (header.usb_cdc_ether_desc) {
225                 dev->hard_mtu = le16_to_cpu(info->ether->wMaxSegmentSize);
226                 /* because of Zaurus, we may be ignoring the host
227                  * side link address we were given.
228                  */
229         }
230 
231         if (header.usb_cdc_mdlm_desc &&
232                 memcmp(header.usb_cdc_mdlm_desc->bGUID, mbm_guid, 16)) {
233                 dev_dbg(&intf->dev, "GUID doesn't match\n");
234                 goto bad_desc;
235         }
236 
237         if (header.usb_cdc_mdlm_detail_desc &&
238                 header.usb_cdc_mdlm_detail_desc->bLength <
239                         (sizeof(struct usb_cdc_mdlm_detail_desc) + 1)) {
240                 dev_dbg(&intf->dev, "Descriptor too short\n");
241                 goto bad_desc;
242         }
243 
244 
245 
246         /* Microsoft ActiveSync based and some regular RNDIS devices lack the
247          * CDC descriptors, so we'll hard-wire the interfaces and not check
248          * for descriptors.
249          *
250          * Some Android RNDIS devices have a CDC Union descriptor pointing
251          * to non-existing interfaces.  Ignore that and attempt the same
252          * hard-wired 0 and 1 interfaces.
253          */
254         if (rndis && (!info->u || android_rndis_quirk)) {
255                 info->control = usb_ifnum_to_if(dev->udev, 0);
256                 info->data = usb_ifnum_to_if(dev->udev, 1);
257                 if (!info->control || !info->data || info->control != intf) {
258                         dev_dbg(&intf->dev,
259                                 "rndis: master #0/%p slave #1/%p\n",
260                                 info->control,
261                                 info->data);
262                         goto bad_desc;
263                 }
264 
265         } else if (!info->header || (!rndis && !info->ether)) {
266                 dev_dbg(&intf->dev, "missing cdc %s%s%sdescriptor\n",
267                         info->header ? "" : "header ",
268                         info->u ? "" : "union ",
269                         info->ether ? "" : "ether ");
270                 goto bad_desc;
271         }
272 
273         /* claim data interface and set it up ... with side effects.
274          * network traffic can't flow until an altsetting is enabled.
275          */
276         if (info->data != info->control) {
277                 status = usb_driver_claim_interface(driver, info->data, dev);
278                 if (status < 0)
279                         return status;
280         }
281         status = usbnet_get_endpoints(dev, info->data);
282         if (status < 0) {
283                 /* ensure immediate exit from usbnet_disconnect */
284                 usb_set_intfdata(info->data, NULL);
285                 if (info->data != info->control)
286                         usb_driver_release_interface(driver, info->data);
287                 return status;
288         }
289 
290         /* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */
291         if (info->data != info->control)
292                 dev->status = NULL;
293         if (info->control->cur_altsetting->desc.bNumEndpoints == 1) {
294                 struct usb_endpoint_descriptor  *desc;
295 
296                 dev->status = &info->control->cur_altsetting->endpoint [0];
297                 desc = &dev->status->desc;
298                 if (!usb_endpoint_is_int_in(desc) ||
299                     (le16_to_cpu(desc->wMaxPacketSize)
300                      < sizeof(struct usb_cdc_notification)) ||
301                     !desc->bInterval) {
302                         dev_dbg(&intf->dev, "bad notification endpoint\n");
303                         dev->status = NULL;
304                 }
305         }
306         if (rndis && !dev->status) {
307                 dev_dbg(&intf->dev, "missing RNDIS status endpoint\n");
308                 usb_set_intfdata(info->data, NULL);
309                 usb_driver_release_interface(driver, info->data);
310                 return -ENODEV;
311         }
312 
313         /* Some devices don't initialise properly. In particular
314          * the packet filter is not reset. There are devices that
315          * don't do reset all the way. So the packet filter should
316          * be set to a sane initial value.
317          */
318         usbnet_cdc_update_filter(dev);
319 
320         return 0;
321 
322 bad_desc:
323         dev_info(&dev->udev->dev, "bad CDC descriptors\n");
324         return -ENODEV;
325 }
326 EXPORT_SYMBOL_GPL(usbnet_generic_cdc_bind);
327 
328 void usbnet_cdc_unbind(struct usbnet *dev, struct usb_interface *intf)
329 {
330         struct cdc_state                *info = (void *) &dev->data;
331         struct usb_driver               *driver = driver_of(intf);
332 
333         /* combined interface - nothing  to do */
334         if (info->data == info->control)
335                 return;
336 
337         /* disconnect master --> disconnect slave */
338         if (intf == info->control && info->data) {
339                 /* ensure immediate exit from usbnet_disconnect */
340                 usb_set_intfdata(info->data, NULL);
341                 usb_driver_release_interface(driver, info->data);
342                 info->data = NULL;
343         }
344 
345         /* and vice versa (just in case) */
346         else if (intf == info->data && info->control) {
347                 /* ensure immediate exit from usbnet_disconnect */
348                 usb_set_intfdata(info->control, NULL);
349                 usb_driver_release_interface(driver, info->control);
350                 info->control = NULL;
351         }
352 }
353 EXPORT_SYMBOL_GPL(usbnet_cdc_unbind);
354 
355 /* Communications Device Class, Ethernet Control model
356  *
357  * Takes two interfaces.  The DATA interface is inactive till an altsetting
358  * is selected.  Configuration data includes class descriptors.  There's
359  * an optional status endpoint on the control interface.
360  *
361  * This should interop with whatever the 2.4 "CDCEther.c" driver
362  * (by Brad Hards) talked with, with more functionality.
363  */
364 
365 static void dumpspeed(struct usbnet *dev, __le32 *speeds)
366 {
367         netif_info(dev, timer, dev->net,
368                    "link speeds: %u kbps up, %u kbps down\n",
369                    __le32_to_cpu(speeds[0]) / 1000,
370                    __le32_to_cpu(speeds[1]) / 1000);
371 }
372 
373 void usbnet_cdc_status(struct usbnet *dev, struct urb *urb)
374 {
375         struct usb_cdc_notification     *event;
376 
377         if (urb->actual_length < sizeof(*event))
378                 return;
379 
380         /* SPEED_CHANGE can get split into two 8-byte packets */
381         if (test_and_clear_bit(EVENT_STS_SPLIT, &dev->flags)) {
382                 dumpspeed(dev, (__le32 *) urb->transfer_buffer);
383                 return;
384         }
385 
386         event = urb->transfer_buffer;
387         switch (event->bNotificationType) {
388         case USB_CDC_NOTIFY_NETWORK_CONNECTION:
389                 netif_dbg(dev, timer, dev->net, "CDC: carrier %s\n",
390                           event->wValue ? "on" : "off");
391                 usbnet_link_change(dev, !!event->wValue, 0);
392                 break;
393         case USB_CDC_NOTIFY_SPEED_CHANGE:       /* tx/rx rates */
394                 netif_dbg(dev, timer, dev->net, "CDC: speed change (len %d)\n",
395                           urb->actual_length);
396                 if (urb->actual_length != (sizeof(*event) + 8))
397                         set_bit(EVENT_STS_SPLIT, &dev->flags);
398                 else
399                         dumpspeed(dev, (__le32 *) &event[1]);
400                 break;
401         /* USB_CDC_NOTIFY_RESPONSE_AVAILABLE can happen too (e.g. RNDIS),
402          * but there are no standard formats for the response data.
403          */
404         default:
405                 netdev_err(dev->net, "CDC: unexpected notification %02x!\n",
406                            event->bNotificationType);
407                 break;
408         }
409 }
410 EXPORT_SYMBOL_GPL(usbnet_cdc_status);
411 
412 int usbnet_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
413 {
414         int                             status;
415         struct cdc_state                *info = (void *) &dev->data;
416 
417         BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data)
418                         < sizeof(struct cdc_state)));
419 
420         status = usbnet_generic_cdc_bind(dev, intf);
421         if (status < 0)
422                 return status;
423 
424         status = usbnet_get_ethernet_addr(dev, info->ether->iMACAddress);
425         if (status < 0) {
426                 usb_set_intfdata(info->data, NULL);
427                 usb_driver_release_interface(driver_of(intf), info->data);
428                 return status;
429         }
430 
431         return 0;
432 }
433 EXPORT_SYMBOL_GPL(usbnet_cdc_bind);
434 
435 static int usbnet_cdc_zte_bind(struct usbnet *dev, struct usb_interface *intf)
436 {
437         int status = usbnet_cdc_bind(dev, intf);
438 
439         if (!status && (dev->net->dev_addr[0] & 0x02))
440                 eth_hw_addr_random(dev->net);
441 
442         return status;
443 }
444 
445 /* Make sure packets have correct destination MAC address
446  *
447  * A firmware bug observed on some devices (ZTE MF823/831/910) is that the
448  * device sends packets with a static, bogus, random MAC address (event if
449  * device MAC address has been updated). Always set MAC address to that of the
450  * device.
451  */
452 static int usbnet_cdc_zte_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
453 {
454         if (skb->len < ETH_HLEN || !(skb->data[0] & 0x02))
455                 return 1;
456 
457         skb_reset_mac_header(skb);
458         ether_addr_copy(eth_hdr(skb)->h_dest, dev->net->dev_addr);
459 
460         return 1;
461 }
462 
463 /* Ensure correct link state
464  *
465  * Some devices (ZTE MF823/831/910) export two carrier on notifications when
466  * connected. This causes the link state to be incorrect. Work around this by
467  * always setting the state to off, then on.
468  */
469 void usbnet_cdc_zte_status(struct usbnet *dev, struct urb *urb)
470 {
471         struct usb_cdc_notification *event;
472 
473         if (urb->actual_length < sizeof(*event))
474                 return;
475 
476         event = urb->transfer_buffer;
477 
478         if (event->bNotificationType != USB_CDC_NOTIFY_NETWORK_CONNECTION) {
479                 usbnet_cdc_status(dev, urb);
480                 return;
481         }
482 
483         netif_dbg(dev, timer, dev->net, "CDC: carrier %s\n",
484                   event->wValue ? "on" : "off");
485 
486         if (event->wValue &&
487             netif_carrier_ok(dev->net))
488                 netif_carrier_off(dev->net);
489 
490         usbnet_link_change(dev, !!event->wValue, 0);
491 }
492 
493 static const struct driver_info cdc_info = {
494         .description =  "CDC Ethernet Device",
495         .flags =        FLAG_ETHER | FLAG_POINTTOPOINT,
496         .bind =         usbnet_cdc_bind,
497         .unbind =       usbnet_cdc_unbind,
498         .status =       usbnet_cdc_status,
499         .set_rx_mode =  usbnet_cdc_update_filter,
500         .manage_power = usbnet_manage_power,
501 };
502 
503 static const struct driver_info zte_cdc_info = {
504         .description =  "ZTE CDC Ethernet Device",
505         .flags =        FLAG_ETHER | FLAG_POINTTOPOINT,
506         .bind =         usbnet_cdc_zte_bind,
507         .unbind =       usbnet_cdc_unbind,
508         .status =       usbnet_cdc_zte_status,
509         .set_rx_mode =  usbnet_cdc_update_filter,
510         .manage_power = usbnet_manage_power,
511         .rx_fixup = usbnet_cdc_zte_rx_fixup,
512 };
513 
514 static const struct driver_info wwan_info = {
515         .description =  "Mobile Broadband Network Device",
516         .flags =        FLAG_WWAN,
517         .bind =         usbnet_cdc_bind,
518         .unbind =       usbnet_cdc_unbind,
519         .status =       usbnet_cdc_status,
520         .set_rx_mode =  usbnet_cdc_update_filter,
521         .manage_power = usbnet_manage_power,
522 };
523 
524 /*-------------------------------------------------------------------------*/
525 
526 #define HUAWEI_VENDOR_ID        0x12D1
527 #define NOVATEL_VENDOR_ID       0x1410
528 #define ZTE_VENDOR_ID           0x19D2
529 #define DELL_VENDOR_ID          0x413C
530 #define REALTEK_VENDOR_ID       0x0bda
531 #define SAMSUNG_VENDOR_ID       0x04e8
532 #define LENOVO_VENDOR_ID        0x17ef
533 #define NVIDIA_VENDOR_ID        0x0955
534 
535 static const struct usb_device_id       products[] = {
536 /* BLACKLIST !!
537  *
538  * First blacklist any products that are egregiously nonconformant
539  * with the CDC Ethernet specs.  Minor braindamage we cope with; when
540  * they're not even trying, needing a separate driver is only the first
541  * of the differences to show up.
542  */
543 
544 #define ZAURUS_MASTER_INTERFACE \
545         .bInterfaceClass        = USB_CLASS_COMM, \
546         .bInterfaceSubClass     = USB_CDC_SUBCLASS_ETHERNET, \
547         .bInterfaceProtocol     = USB_CDC_PROTO_NONE
548 
549 /* SA-1100 based Sharp Zaurus ("collie"), or compatible;
550  * wire-incompatible with true CDC Ethernet implementations.
551  * (And, it seems, needlessly so...)
552  */
553 {
554         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
555                           | USB_DEVICE_ID_MATCH_DEVICE,
556         .idVendor               = 0x04DD,
557         .idProduct              = 0x8004,
558         ZAURUS_MASTER_INTERFACE,
559         .driver_info            = 0,
560 },
561 
562 /* PXA-25x based Sharp Zaurii.  Note that it seems some of these
563  * (later models especially) may have shipped only with firmware
564  * advertising false "CDC MDLM" compatibility ... but we're not
565  * clear which models did that, so for now let's assume the worst.
566  */
567 {
568         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
569                           | USB_DEVICE_ID_MATCH_DEVICE,
570         .idVendor               = 0x04DD,
571         .idProduct              = 0x8005,       /* A-300 */
572         ZAURUS_MASTER_INTERFACE,
573         .driver_info            = 0,
574 }, {
575         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
576                           | USB_DEVICE_ID_MATCH_DEVICE,
577         .idVendor               = 0x04DD,
578         .idProduct              = 0x8006,       /* B-500/SL-5600 */
579         ZAURUS_MASTER_INTERFACE,
580         .driver_info            = 0,
581 }, {
582         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
583                           | USB_DEVICE_ID_MATCH_DEVICE,
584         .idVendor               = 0x04DD,
585         .idProduct              = 0x8007,       /* C-700 */
586         ZAURUS_MASTER_INTERFACE,
587         .driver_info            = 0,
588 }, {
589         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
590                  | USB_DEVICE_ID_MATCH_DEVICE,
591         .idVendor               = 0x04DD,
592         .idProduct              = 0x9031,       /* C-750 C-760 */
593         ZAURUS_MASTER_INTERFACE,
594         .driver_info            = 0,
595 }, {
596         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
597                  | USB_DEVICE_ID_MATCH_DEVICE,
598         .idVendor               = 0x04DD,
599         .idProduct              = 0x9032,       /* SL-6000 */
600         ZAURUS_MASTER_INTERFACE,
601         .driver_info            = 0,
602 }, {
603         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
604                  | USB_DEVICE_ID_MATCH_DEVICE,
605         .idVendor               = 0x04DD,
606         /* reported with some C860 units */
607         .idProduct              = 0x9050,       /* C-860 */
608         ZAURUS_MASTER_INTERFACE,
609         .driver_info            = 0,
610 },
611 
612 /* Olympus has some models with a Zaurus-compatible option.
613  * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
614  */
615 {
616         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
617                  | USB_DEVICE_ID_MATCH_DEVICE,
618         .idVendor               = 0x07B4,
619         .idProduct              = 0x0F02,       /* R-1000 */
620         ZAURUS_MASTER_INTERFACE,
621         .driver_info            = 0,
622 },
623 
624 /* LG Electronics VL600 wants additional headers on every frame */
625 {
626         USB_DEVICE_AND_INTERFACE_INFO(0x1004, 0x61aa, USB_CLASS_COMM,
627                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
628         .driver_info = 0,
629 },
630 
631 /* Logitech Harmony 900 - uses the pseudo-MDLM (BLAN) driver */
632 {
633         USB_DEVICE_AND_INTERFACE_INFO(0x046d, 0xc11f, USB_CLASS_COMM,
634                         USB_CDC_SUBCLASS_MDLM, USB_CDC_PROTO_NONE),
635         .driver_info            = 0,
636 },
637 
638 /* Novatel USB551L and MC551 - handled by qmi_wwan */
639 {
640         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0xB001, USB_CLASS_COMM,
641                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
642         .driver_info = 0,
643 },
644 
645 /* Novatel E362 - handled by qmi_wwan */
646 {
647         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9010, USB_CLASS_COMM,
648                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
649         .driver_info = 0,
650 },
651 
652 /* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
653 {
654         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8195, USB_CLASS_COMM,
655                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
656         .driver_info = 0,
657 },
658 
659 /* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
660 {
661         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8196, USB_CLASS_COMM,
662                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
663         .driver_info = 0,
664 },
665 
666 /* Dell Wireless 5804 (Novatel E371) - handled by qmi_wwan */
667 {
668         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x819b, USB_CLASS_COMM,
669                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
670         .driver_info = 0,
671 },
672 
673 /* Novatel Expedite E371 - handled by qmi_wwan */
674 {
675         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9011, USB_CLASS_COMM,
676                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
677         .driver_info = 0,
678 },
679 
680 /* AnyDATA ADU960S - handled by qmi_wwan */
681 {
682         USB_DEVICE_AND_INTERFACE_INFO(0x16d5, 0x650a, USB_CLASS_COMM,
683                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
684         .driver_info = 0,
685 },
686 
687 /* Huawei E1820 - handled by qmi_wwan */
688 {
689         USB_DEVICE_INTERFACE_NUMBER(HUAWEI_VENDOR_ID, 0x14ac, 1),
690         .driver_info = 0,
691 },
692 
693 /* Realtek RTL8152 Based USB 2.0 Ethernet Adapters */
694 {
695         USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8152, USB_CLASS_COMM,
696                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
697         .driver_info = 0,
698 },
699 
700 /* Realtek RTL8153 Based USB 3.0 Ethernet Adapters */
701 {
702         USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8153, USB_CLASS_COMM,
703                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
704         .driver_info = 0,
705 },
706 
707 /* Samsung USB Ethernet Adapters */
708 {
709         USB_DEVICE_AND_INTERFACE_INFO(SAMSUNG_VENDOR_ID, 0xa101, USB_CLASS_COMM,
710                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
711         .driver_info = 0,
712 },
713 
714 /* Lenovo Thinkpad USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */
715 {
716         USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x7205, USB_CLASS_COMM,
717                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
718         .driver_info = 0,
719 },
720 
721 /* NVIDIA Tegra USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */
722 {
723         USB_DEVICE_AND_INTERFACE_INFO(NVIDIA_VENDOR_ID, 0x09ff, USB_CLASS_COMM,
724                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
725         .driver_info = 0,
726 },
727 
728 /* WHITELIST!!!
729  *
730  * CDC Ether uses two interfaces, not necessarily consecutive.
731  * We match the main interface, ignoring the optional device
732  * class so we could handle devices that aren't exclusively
733  * CDC ether.
734  *
735  * NOTE:  this match must come AFTER entries blacklisting devices
736  * because of bugs/quirks in a given product (like Zaurus, above).
737  */
738 {
739         /* ZTE (Vodafone) K3805-Z */
740         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1003, USB_CLASS_COMM,
741                                       USB_CDC_SUBCLASS_ETHERNET,
742                                       USB_CDC_PROTO_NONE),
743         .driver_info = (unsigned long)&wwan_info,
744 }, {
745         /* ZTE (Vodafone) K3806-Z */
746         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1015, USB_CLASS_COMM,
747                                       USB_CDC_SUBCLASS_ETHERNET,
748                                       USB_CDC_PROTO_NONE),
749         .driver_info = (unsigned long)&wwan_info,
750 }, {
751         /* ZTE (Vodafone) K4510-Z */
752         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1173, USB_CLASS_COMM,
753                                       USB_CDC_SUBCLASS_ETHERNET,
754                                       USB_CDC_PROTO_NONE),
755         .driver_info = (unsigned long)&wwan_info,
756 }, {
757         /* ZTE (Vodafone) K3770-Z */
758         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1177, USB_CLASS_COMM,
759                                       USB_CDC_SUBCLASS_ETHERNET,
760                                       USB_CDC_PROTO_NONE),
761         .driver_info = (unsigned long)&wwan_info,
762 }, {
763         /* ZTE (Vodafone) K3772-Z */
764         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1181, USB_CLASS_COMM,
765                                       USB_CDC_SUBCLASS_ETHERNET,
766                                       USB_CDC_PROTO_NONE),
767         .driver_info = (unsigned long)&wwan_info,
768 }, {
769         /* Telit modules */
770         USB_VENDOR_AND_INTERFACE_INFO(0x1bc7, USB_CLASS_COMM,
771                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
772         .driver_info = (kernel_ulong_t) &wwan_info,
773 }, {
774         /* Dell DW5580 modules */
775         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x81ba, USB_CLASS_COMM,
776                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
777         .driver_info = (kernel_ulong_t)&wwan_info,
778 }, {
779         /* ZTE modules */
780         USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, USB_CLASS_COMM,
781                                       USB_CDC_SUBCLASS_ETHERNET,
782                                       USB_CDC_PROTO_NONE),
783         .driver_info = (unsigned long)&zte_cdc_info,
784 }, {
785         USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
786                         USB_CDC_PROTO_NONE),
787         .driver_info = (unsigned long) &cdc_info,
788 }, {
789         USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
790                         USB_CDC_PROTO_NONE),
791         .driver_info = (unsigned long)&wwan_info,
792 
793 }, {
794         /* Various Huawei modems with a network port like the UMG1831 */
795         USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_COMM,
796                                       USB_CDC_SUBCLASS_ETHERNET, 255),
797         .driver_info = (unsigned long)&wwan_info,
798 },
799         { },            /* END */
800 };
801 MODULE_DEVICE_TABLE(usb, products);
802 
803 static struct usb_driver cdc_driver = {
804         .name =         "cdc_ether",
805         .id_table =     products,
806         .probe =        usbnet_probe,
807         .disconnect =   usbnet_disconnect,
808         .suspend =      usbnet_suspend,
809         .resume =       usbnet_resume,
810         .reset_resume = usbnet_resume,
811         .supports_autosuspend = 1,
812         .disable_hub_initiated_lpm = 1,
813 };
814 
815 module_usb_driver(cdc_driver);
816 
817 MODULE_AUTHOR("David Brownell");
818 MODULE_DESCRIPTION("USB CDC Ethernet devices");
819 MODULE_LICENSE("GPL");
820 

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