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