Merge commit 'main-jb-2012.08.03-B4' into t114-0806
[linux-2.6.git] / 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, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19  */
20
21 // #define      DEBUG                   // error path messages, extra info
22 // #define      VERBOSE                 // more; success messages
23
24 #include <linux/module.h>
25 #include <linux/init.h>
26 #include <linux/netdevice.h>
27 #include <linux/etherdevice.h>
28 #include <linux/ethtool.h>
29 #include <linux/workqueue.h>
30 #include <linux/mii.h>
31 #include <linux/usb.h>
32 #include <linux/usb/cdc.h>
33 #include <linux/usb/usbnet.h>
34
35
36 #if defined(CONFIG_USB_NET_RNDIS_HOST) || defined(CONFIG_USB_NET_RNDIS_HOST_MODULE)
37
38 static int is_rndis(struct usb_interface_descriptor *desc)
39 {
40         return (desc->bInterfaceClass == USB_CLASS_COMM &&
41                 desc->bInterfaceSubClass == 2 &&
42                 desc->bInterfaceProtocol == 0xff);
43 }
44
45 static int is_activesync(struct usb_interface_descriptor *desc)
46 {
47         return (desc->bInterfaceClass == USB_CLASS_MISC &&
48                 desc->bInterfaceSubClass == 1 &&
49                 desc->bInterfaceProtocol == 1);
50 }
51
52 static int is_wireless_rndis(struct usb_interface_descriptor *desc)
53 {
54         return (desc->bInterfaceClass == USB_CLASS_WIRELESS_CONTROLLER &&
55                 desc->bInterfaceSubClass == 1 &&
56                 desc->bInterfaceProtocol == 3);
57 }
58
59 #else
60
61 #define is_rndis(desc)          0
62 #define is_activesync(desc)     0
63 #define is_wireless_rndis(desc) 0
64
65 #endif
66
67 static const u8 mbm_guid[16] = {
68         0xa3, 0x17, 0xa8, 0x8b, 0x04, 0x5e, 0x4f, 0x01,
69         0xa6, 0x07, 0xc0, 0xff, 0xcb, 0x7e, 0x39, 0x2a,
70 };
71
72 /*
73  * probes control interface, claims data interface, collects the bulk
74  * endpoints, activates data interface (if needed), maybe sets MTU.
75  * all pure cdc, except for certain firmware workarounds, and knowing
76  * that rndis uses one different rule.
77  */
78 int usbnet_generic_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
79 {
80         u8                              *buf = intf->cur_altsetting->extra;
81         int                             len = intf->cur_altsetting->extralen;
82         struct usb_interface_descriptor *d;
83         struct cdc_state                *info = (void *) &dev->data;
84         int                             status;
85         int                             rndis;
86         bool                            android_rndis_quirk = false;
87         struct usb_driver               *driver = driver_of(intf);
88         struct usb_cdc_mdlm_desc        *desc = NULL;
89         struct usb_cdc_mdlm_detail_desc *detail = NULL;
90
91         if (sizeof dev->data < sizeof *info)
92                 return -EDOM;
93
94         /* expect strict spec conformance for the descriptors, but
95          * cope with firmware which stores them in the wrong place
96          */
97         if (len == 0 && dev->udev->actconfig->extralen) {
98                 /* Motorola SB4100 (and others: Brad Hards says it's
99                  * from a Broadcom design) put CDC descriptors here
100                  */
101                 buf = dev->udev->actconfig->extra;
102                 len = dev->udev->actconfig->extralen;
103                 dev_dbg(&intf->dev, "CDC descriptors on config\n");
104         }
105
106         /* Maybe CDC descriptors are after the endpoint?  This bug has
107          * been seen on some 2Wire Inc RNDIS-ish products.
108          */
109         if (len == 0) {
110                 struct usb_host_endpoint        *hep;
111
112                 hep = intf->cur_altsetting->endpoint;
113                 if (hep) {
114                         buf = hep->extra;
115                         len = hep->extralen;
116                 }
117                 if (len)
118                         dev_dbg(&intf->dev,
119                                 "CDC descriptors on endpoint\n");
120         }
121
122         /* this assumes that if there's a non-RNDIS vendor variant
123          * of cdc-acm, it'll fail RNDIS requests cleanly.
124          */
125         rndis = (is_rndis(&intf->cur_altsetting->desc) ||
126                  is_activesync(&intf->cur_altsetting->desc) ||
127                  is_wireless_rndis(&intf->cur_altsetting->desc));
128
129         memset(info, 0, sizeof *info);
130         info->control = intf;
131         while (len > 3) {
132                 if (buf [1] != USB_DT_CS_INTERFACE)
133                         goto next_desc;
134
135                 /* use bDescriptorSubType to identify the CDC descriptors.
136                  * We expect devices with CDC header and union descriptors.
137                  * For CDC Ethernet we need the ethernet descriptor.
138                  * For RNDIS, ignore two (pointless) CDC modem descriptors
139                  * in favor of a complicated OID-based RPC scheme doing what
140                  * CDC Ethernet achieves with a simple descriptor.
141                  */
142                 switch (buf [2]) {
143                 case USB_CDC_HEADER_TYPE:
144                         if (info->header) {
145                                 dev_dbg(&intf->dev, "extra CDC header\n");
146                                 goto bad_desc;
147                         }
148                         info->header = (void *) buf;
149                         if (info->header->bLength != sizeof *info->header) {
150                                 dev_dbg(&intf->dev, "CDC header len %u\n",
151                                         info->header->bLength);
152                                 goto bad_desc;
153                         }
154                         break;
155                 case USB_CDC_ACM_TYPE:
156                         /* paranoia:  disambiguate a "real" vendor-specific
157                          * modem interface from an RNDIS non-modem.
158                          */
159                         if (rndis) {
160                                 struct usb_cdc_acm_descriptor *acm;
161
162                                 acm = (void *) buf;
163                                 if (acm->bmCapabilities) {
164                                         dev_dbg(&intf->dev,
165                                                 "ACM capabilities %02x, "
166                                                 "not really RNDIS?\n",
167                                                 acm->bmCapabilities);
168                                         goto bad_desc;
169                                 }
170                         }
171                         break;
172                 case USB_CDC_UNION_TYPE:
173                         if (info->u) {
174                                 dev_dbg(&intf->dev, "extra CDC union\n");
175                                 goto bad_desc;
176                         }
177                         info->u = (void *) buf;
178                         if (info->u->bLength != sizeof *info->u) {
179                                 dev_dbg(&intf->dev, "CDC union len %u\n",
180                                         info->u->bLength);
181                                 goto bad_desc;
182                         }
183
184                         /* we need a master/control interface (what we're
185                          * probed with) and a slave/data interface; union
186                          * descriptors sort this all out.
187                          */
188                         info->control = usb_ifnum_to_if(dev->udev,
189                                                 info->u->bMasterInterface0);
190                         info->data = usb_ifnum_to_if(dev->udev,
191                                                 info->u->bSlaveInterface0);
192                         if (!info->control || !info->data) {
193                                 dev_dbg(&intf->dev,
194                                         "master #%u/%p slave #%u/%p\n",
195                                         info->u->bMasterInterface0,
196                                         info->control,
197                                         info->u->bSlaveInterface0,
198                                         info->data);
199                                 /* fall back to hard-wiring for RNDIS */
200                                 if (rndis) {
201                                         android_rndis_quirk = true;
202                                         goto next_desc;
203                                 }
204                                 goto bad_desc;
205                         }
206                         if (info->control != intf) {
207                                 dev_dbg(&intf->dev, "bogus CDC Union\n");
208                                 /* Ambit USB Cable Modem (and maybe others)
209                                  * interchanges master and slave interface.
210                                  */
211                                 if (info->data == intf) {
212                                         info->data = info->control;
213                                         info->control = intf;
214                                 } else
215                                         goto bad_desc;
216                         }
217
218                         /* a data interface altsetting does the real i/o */
219                         d = &info->data->cur_altsetting->desc;
220                         if (d->bInterfaceClass != USB_CLASS_CDC_DATA) {
221                                 dev_dbg(&intf->dev, "slave class %u\n",
222                                         d->bInterfaceClass);
223                                 goto bad_desc;
224                         }
225                         break;
226                 case USB_CDC_ETHERNET_TYPE:
227                         if (info->ether) {
228                                 dev_dbg(&intf->dev, "extra CDC ether\n");
229                                 goto bad_desc;
230                         }
231                         info->ether = (void *) buf;
232                         if (info->ether->bLength != sizeof *info->ether) {
233                                 dev_dbg(&intf->dev, "CDC ether len %u\n",
234                                         info->ether->bLength);
235                                 goto bad_desc;
236                         }
237                         dev->hard_mtu = le16_to_cpu(
238                                                 info->ether->wMaxSegmentSize);
239                         /* because of Zaurus, we may be ignoring the host
240                          * side link address we were given.
241                          */
242                         break;
243                 case USB_CDC_MDLM_TYPE:
244                         if (desc) {
245                                 dev_dbg(&intf->dev, "extra MDLM descriptor\n");
246                                 goto bad_desc;
247                         }
248
249                         desc = (void *)buf;
250
251                         if (desc->bLength != sizeof(*desc))
252                                 goto bad_desc;
253
254                         if (memcmp(&desc->bGUID, mbm_guid, 16))
255                                 goto bad_desc;
256                         break;
257                 case USB_CDC_MDLM_DETAIL_TYPE:
258                         if (detail) {
259                                 dev_dbg(&intf->dev, "extra MDLM detail descriptor\n");
260                                 goto bad_desc;
261                         }
262
263                         detail = (void *)buf;
264
265                         if (detail->bGuidDescriptorType == 0) {
266                                 if (detail->bLength < (sizeof(*detail) + 1))
267                                         goto bad_desc;
268                         } else
269                                 goto bad_desc;
270                         break;
271                 }
272 next_desc:
273                 len -= buf [0]; /* bLength */
274                 buf += buf [0];
275         }
276
277         /* Microsoft ActiveSync based and some regular RNDIS devices lack the
278          * CDC descriptors, so we'll hard-wire the interfaces and not check
279          * for descriptors.
280          *
281          * Some Android RNDIS devices have a CDC Union descriptor pointing
282          * to non-existing interfaces.  Ignore that and attempt the same
283          * hard-wired 0 and 1 interfaces.
284          */
285         if (rndis && (!info->u || android_rndis_quirk)) {
286                 info->control = usb_ifnum_to_if(dev->udev, 0);
287                 info->data = usb_ifnum_to_if(dev->udev, 1);
288                 if (!info->control || !info->data || info->control != intf) {
289                         dev_dbg(&intf->dev,
290                                 "rndis: master #0/%p slave #1/%p\n",
291                                 info->control,
292                                 info->data);
293                         goto bad_desc;
294                 }
295
296         } else if (!info->header || !info->u || (!rndis && !info->ether)) {
297                 dev_dbg(&intf->dev, "missing cdc %s%s%sdescriptor\n",
298                         info->header ? "" : "header ",
299                         info->u ? "" : "union ",
300                         info->ether ? "" : "ether ");
301                 goto bad_desc;
302         }
303
304         /* claim data interface and set it up ... with side effects.
305          * network traffic can't flow until an altsetting is enabled.
306          */
307         status = usb_driver_claim_interface(driver, info->data, dev);
308         if (status < 0)
309                 return status;
310         status = usbnet_get_endpoints(dev, info->data);
311         if (status < 0) {
312                 /* ensure immediate exit from usbnet_disconnect */
313                 usb_set_intfdata(info->data, NULL);
314                 usb_driver_release_interface(driver, info->data);
315                 return status;
316         }
317
318         /* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */
319         dev->status = NULL;
320         if (info->control->cur_altsetting->desc.bNumEndpoints == 1) {
321                 struct usb_endpoint_descriptor  *desc;
322
323                 dev->status = &info->control->cur_altsetting->endpoint [0];
324                 desc = &dev->status->desc;
325                 if (!usb_endpoint_is_int_in(desc) ||
326                     (le16_to_cpu(desc->wMaxPacketSize)
327                      < sizeof(struct usb_cdc_notification)) ||
328                     !desc->bInterval) {
329                         dev_dbg(&intf->dev, "bad notification endpoint\n");
330                         dev->status = NULL;
331                 }
332         }
333         if (rndis && !dev->status) {
334                 dev_dbg(&intf->dev, "missing RNDIS status endpoint\n");
335                 usb_set_intfdata(info->data, NULL);
336                 usb_driver_release_interface(driver, info->data);
337                 return -ENODEV;
338         }
339         return 0;
340
341 bad_desc:
342         dev_info(&dev->udev->dev, "bad CDC descriptors\n");
343         return -ENODEV;
344 }
345 EXPORT_SYMBOL_GPL(usbnet_generic_cdc_bind);
346
347 void usbnet_cdc_unbind(struct usbnet *dev, struct usb_interface *intf)
348 {
349         struct cdc_state                *info = (void *) &dev->data;
350         struct usb_driver               *driver = driver_of(intf);
351
352         /* disconnect master --> disconnect slave */
353         if (intf == info->control && info->data) {
354                 /* ensure immediate exit from usbnet_disconnect */
355                 usb_set_intfdata(info->data, NULL);
356                 usb_driver_release_interface(driver, info->data);
357                 info->data = NULL;
358         }
359
360         /* and vice versa (just in case) */
361         else if (intf == info->data && info->control) {
362                 /* ensure immediate exit from usbnet_disconnect */
363                 usb_set_intfdata(info->control, NULL);
364                 usb_driver_release_interface(driver, info->control);
365                 info->control = NULL;
366         }
367 }
368 EXPORT_SYMBOL_GPL(usbnet_cdc_unbind);
369
370 /*-------------------------------------------------------------------------
371  *
372  * Communications Device Class, Ethernet Control model
373  *
374  * Takes two interfaces.  The DATA interface is inactive till an altsetting
375  * is selected.  Configuration data includes class descriptors.  There's
376  * an optional status endpoint on the control interface.
377  *
378  * This should interop with whatever the 2.4 "CDCEther.c" driver
379  * (by Brad Hards) talked with, with more functionality.
380  *
381  *-------------------------------------------------------------------------*/
382
383 static void dumpspeed(struct usbnet *dev, __le32 *speeds)
384 {
385         netif_info(dev, timer, dev->net,
386                    "link speeds: %u kbps up, %u kbps down\n",
387                    __le32_to_cpu(speeds[0]) / 1000,
388                    __le32_to_cpu(speeds[1]) / 1000);
389 }
390
391 void usbnet_cdc_status(struct usbnet *dev, struct urb *urb)
392 {
393         struct usb_cdc_notification     *event;
394
395         if (urb->actual_length < sizeof *event)
396                 return;
397
398         /* SPEED_CHANGE can get split into two 8-byte packets */
399         if (test_and_clear_bit(EVENT_STS_SPLIT, &dev->flags)) {
400                 dumpspeed(dev, (__le32 *) urb->transfer_buffer);
401                 return;
402         }
403
404         event = urb->transfer_buffer;
405         switch (event->bNotificationType) {
406         case USB_CDC_NOTIFY_NETWORK_CONNECTION:
407                 netif_dbg(dev, timer, dev->net, "CDC: carrier %s\n",
408                           event->wValue ? "on" : "off");
409                 if (event->wValue)
410                         netif_carrier_on(dev->net);
411                 else
412                         netif_carrier_off(dev->net);
413                 break;
414         case USB_CDC_NOTIFY_SPEED_CHANGE:       /* tx/rx rates */
415                 netif_dbg(dev, timer, dev->net, "CDC: speed change (len %d)\n",
416                           urb->actual_length);
417                 if (urb->actual_length != (sizeof *event + 8))
418                         set_bit(EVENT_STS_SPLIT, &dev->flags);
419                 else
420                         dumpspeed(dev, (__le32 *) &event[1]);
421                 break;
422         /* USB_CDC_NOTIFY_RESPONSE_AVAILABLE can happen too (e.g. RNDIS),
423          * but there are no standard formats for the response data.
424          */
425         default:
426                 netdev_err(dev->net, "CDC: unexpected notification %02x!\n",
427                            event->bNotificationType);
428                 break;
429         }
430 }
431 EXPORT_SYMBOL_GPL(usbnet_cdc_status);
432
433 int usbnet_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
434 {
435         int                             status;
436         struct cdc_state                *info = (void *) &dev->data;
437
438         BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data)
439                         < sizeof(struct cdc_state)));
440
441         status = usbnet_generic_cdc_bind(dev, intf);
442         if (status < 0)
443                 return status;
444
445         status = usbnet_get_ethernet_addr(dev, info->ether->iMACAddress);
446         if (status < 0) {
447                 usb_set_intfdata(info->data, NULL);
448                 usb_driver_release_interface(driver_of(intf), info->data);
449                 return status;
450         }
451
452         /* FIXME cdc-ether has some multicast code too, though it complains
453          * in routine cases.  info->ether describes the multicast support.
454          * Implement that here, manipulating the cdc filter as needed.
455          */
456         return 0;
457 }
458 EXPORT_SYMBOL_GPL(usbnet_cdc_bind);
459
460 static int cdc_manage_power(struct usbnet *dev, int on)
461 {
462         dev->intf->needs_remote_wakeup = on;
463         return 0;
464 }
465
466 static const struct driver_info cdc_info = {
467         .description =  "CDC Ethernet Device",
468         .flags =        FLAG_ETHER | FLAG_POINTTOPOINT,
469         // .check_connect = cdc_check_connect,
470         .bind =         usbnet_cdc_bind,
471         .unbind =       usbnet_cdc_unbind,
472         .status =       usbnet_cdc_status,
473         .manage_power = cdc_manage_power,
474 };
475
476 static const struct driver_info wwan_info = {
477         .description =  "Mobile Broadband Network Device",
478         .flags =        FLAG_WWAN,
479         .bind =         usbnet_cdc_bind,
480         .unbind =       usbnet_cdc_unbind,
481         .status =       usbnet_cdc_status,
482         .manage_power = cdc_manage_power,
483 };
484
485 static const struct driver_info rmnet_info = {
486         .description =  "Mobile Broadband Network Device",
487         .flags =        FLAG_RMNET,
488         .bind =         usbnet_cdc_bind,
489         .unbind =       usbnet_cdc_unbind,
490         .status =       usbnet_cdc_status,
491         .manage_power = cdc_manage_power,
492 };
493
494 /*-------------------------------------------------------------------------*/
495
496 #define HUAWEI_VENDOR_ID        0x12D1
497 #define NOVATEL_VENDOR_ID       0x1410
498
499 static const struct usb_device_id       products [] = {
500 /*
501  * BLACKLIST !!
502  *
503  * First blacklist any products that are egregiously nonconformant
504  * with the CDC Ethernet specs.  Minor braindamage we cope with; when
505  * they're not even trying, needing a separate driver is only the first
506  * of the differences to show up.
507  */
508
509 #define ZAURUS_MASTER_INTERFACE \
510         .bInterfaceClass        = USB_CLASS_COMM, \
511         .bInterfaceSubClass     = USB_CDC_SUBCLASS_ETHERNET, \
512         .bInterfaceProtocol     = USB_CDC_PROTO_NONE
513
514 /* SA-1100 based Sharp Zaurus ("collie"), or compatible;
515  * wire-incompatible with true CDC Ethernet implementations.
516  * (And, it seems, needlessly so...)
517  */
518 {
519         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
520                           | USB_DEVICE_ID_MATCH_DEVICE,
521         .idVendor               = 0x04DD,
522         .idProduct              = 0x8004,
523         ZAURUS_MASTER_INTERFACE,
524         .driver_info            = 0,
525 },
526
527 /* PXA-25x based Sharp Zaurii.  Note that it seems some of these
528  * (later models especially) may have shipped only with firmware
529  * advertising false "CDC MDLM" compatibility ... but we're not
530  * clear which models did that, so for now let's assume the worst.
531  */
532 {
533         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
534                           | USB_DEVICE_ID_MATCH_DEVICE,
535         .idVendor               = 0x04DD,
536         .idProduct              = 0x8005,       /* A-300 */
537         ZAURUS_MASTER_INTERFACE,
538         .driver_info            = 0,
539 }, {
540         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
541                           | USB_DEVICE_ID_MATCH_DEVICE,
542         .idVendor               = 0x04DD,
543         .idProduct              = 0x8006,       /* B-500/SL-5600 */
544         ZAURUS_MASTER_INTERFACE,
545         .driver_info            = 0,
546 }, {
547         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
548                   | USB_DEVICE_ID_MATCH_DEVICE,
549         .idVendor               = 0x04DD,
550         .idProduct              = 0x8007,       /* C-700 */
551         ZAURUS_MASTER_INTERFACE,
552         .driver_info            = 0,
553 }, {
554         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
555                  | USB_DEVICE_ID_MATCH_DEVICE,
556         .idVendor               = 0x04DD,
557         .idProduct              = 0x9031,       /* C-750 C-760 */
558         ZAURUS_MASTER_INTERFACE,
559         .driver_info            = 0,
560 }, {
561         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
562                  | USB_DEVICE_ID_MATCH_DEVICE,
563         .idVendor               = 0x04DD,
564         .idProduct              = 0x9032,       /* SL-6000 */
565         ZAURUS_MASTER_INTERFACE,
566         .driver_info            = 0,
567 }, {
568         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
569                  | USB_DEVICE_ID_MATCH_DEVICE,
570         .idVendor               = 0x04DD,
571         /* reported with some C860 units */
572         .idProduct              = 0x9050,       /* C-860 */
573         ZAURUS_MASTER_INTERFACE,
574         .driver_info            = 0,
575 },
576
577 /* Olympus has some models with a Zaurus-compatible option.
578  * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
579  */
580 {
581         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
582                  | USB_DEVICE_ID_MATCH_DEVICE,
583         .idVendor               = 0x07B4,
584         .idProduct              = 0x0F02,       /* R-1000 */
585         ZAURUS_MASTER_INTERFACE,
586         .driver_info            = 0,
587 },
588
589 /* LG Electronics VL600 wants additional headers on every frame */
590 {
591         USB_DEVICE_AND_INTERFACE_INFO(0x1004, 0x61aa, USB_CLASS_COMM,
592                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
593         .driver_info = 0,
594 },
595
596 /* Logitech Harmony 900 - uses the pseudo-MDLM (BLAN) driver */
597 {
598         USB_DEVICE_AND_INTERFACE_INFO(0x046d, 0xc11f, USB_CLASS_COMM,
599                         USB_CDC_SUBCLASS_MDLM, USB_CDC_PROTO_NONE),
600         .driver_info            = 0,
601 },
602
603 /* PH450 */
604 {
605         .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
606                 | USB_DEVICE_ID_MATCH_DEVICE,
607         USB_DEVICE(0x1983, 0x0310),
608         .driver_info = (unsigned long)&rmnet_info,
609 }, {
610         .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
611                 | USB_DEVICE_ID_MATCH_DEVICE,
612         USB_DEVICE(0x1983, 0x0321),
613         .driver_info = (unsigned long)&rmnet_info,
614 }, {
615         .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
616                 | USB_DEVICE_ID_MATCH_DEVICE,
617         USB_DEVICE(0x1983, 0x0327),     /* 5AE */
618         .driver_info = (unsigned long)&rmnet_info,
619 },
620
621 /* Tango module */
622 {
623         .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
624                  | USB_DEVICE_ID_MATCH_DEVICE,
625         USB_DEVICE(0x0489,0xE03A),
626         .driver_info = (unsigned long)&rmnet_info,
627 },
628
629 /* ZM5250 */
630 {
631         .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
632                  | USB_DEVICE_ID_MATCH_DEVICE,
633         USB_DEVICE(0x19D2,0x1554),
634         .driver_info = (unsigned long)&rmnet_info,
635 },
636 /*
637  * WHITELIST!!!
638  *
639  * CDC Ether uses two interfaces, not necessarily consecutive.
640  * We match the main interface, ignoring the optional device
641  * class so we could handle devices that aren't exclusively
642  * CDC ether.
643  *
644  * NOTE:  this match must come AFTER entries blacklisting devices
645  * because of bugs/quirks in a given product (like Zaurus, above).
646  */
647 {
648         /* Novatel USB551L */
649         /* This match must come *before* the generic CDC-ETHER match so that
650          * we get FLAG_WWAN set on the device, since it's descriptors are
651          * generic CDC-ETHER.
652          */
653         .match_flags    =   USB_DEVICE_ID_MATCH_VENDOR
654                  | USB_DEVICE_ID_MATCH_PRODUCT
655                  | USB_DEVICE_ID_MATCH_INT_INFO,
656         .idVendor               = NOVATEL_VENDOR_ID,
657         .idProduct              = 0xB001,
658         .bInterfaceClass        = USB_CLASS_COMM,
659         .bInterfaceSubClass     = USB_CDC_SUBCLASS_ETHERNET,
660         .bInterfaceProtocol     = USB_CDC_PROTO_NONE,
661         .driver_info = (unsigned long)&wwan_info,
662 }, {
663         USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
664                         USB_CDC_PROTO_NONE),
665         .driver_info = (unsigned long) &cdc_info,
666 }, {
667         USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
668                         USB_CDC_PROTO_NONE),
669         .driver_info = (unsigned long)&wwan_info,
670
671 }, {
672         /* Various Huawei modems with a network port like the UMG1831 */
673         .match_flags    =   USB_DEVICE_ID_MATCH_VENDOR
674                  | USB_DEVICE_ID_MATCH_INT_INFO,
675         .idVendor               = HUAWEI_VENDOR_ID,
676         .bInterfaceClass        = USB_CLASS_COMM,
677         .bInterfaceSubClass     = USB_CDC_SUBCLASS_ETHERNET,
678         .bInterfaceProtocol     = 255,
679         .driver_info = (unsigned long)&wwan_info,
680 },
681         { },            // END
682 };
683 MODULE_DEVICE_TABLE(usb, products);
684
685 static struct usb_driver cdc_driver = {
686         .name =         "cdc_ether",
687         .id_table =     products,
688         .probe =        usbnet_probe,
689         .disconnect =   usbnet_disconnect,
690         .suspend =      usbnet_suspend,
691         .resume =       usbnet_resume,
692         .reset_resume = usbnet_resume,
693         .supports_autosuspend = 1,
694 };
695
696 module_usb_driver(cdc_driver);
697
698 MODULE_AUTHOR("David Brownell");
699 MODULE_DESCRIPTION("USB CDC Ethernet devices");
700 MODULE_LICENSE("GPL");