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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, 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
36static 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
43static 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
50static 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
65static 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
70static 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 */
105int 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 }
214skip:
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
322bad_desc:
323 dev_info(&dev->udev->dev, "bad CDC descriptors\n");
324 return -ENODEV;
325}
326EXPORT_SYMBOL_GPL(usbnet_generic_cdc_bind);
327
328void 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}
353EXPORT_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
365static 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
373void 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}
410EXPORT_SYMBOL_GPL(usbnet_cdc_status);
411
412int 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}
433EXPORT_SYMBOL_GPL(usbnet_cdc_bind);
434
435static const struct driver_info cdc_info = {
436 .description = "CDC Ethernet Device",
437 .flags = FLAG_ETHER | FLAG_POINTTOPOINT,
438 .bind = usbnet_cdc_bind,
439 .unbind = usbnet_cdc_unbind,
440 .status = usbnet_cdc_status,
441 .set_rx_mode = usbnet_cdc_update_filter,
442 .manage_power = usbnet_manage_power,
443};
444
445static const struct driver_info wwan_info = {
446 .description = "Mobile Broadband Network Device",
447 .flags = FLAG_WWAN,
448 .bind = usbnet_cdc_bind,
449 .unbind = usbnet_cdc_unbind,
450 .status = usbnet_cdc_status,
451 .set_rx_mode = usbnet_cdc_update_filter,
452 .manage_power = usbnet_manage_power,
453};
454
455/*-------------------------------------------------------------------------*/
456
457#define HUAWEI_VENDOR_ID 0x12D1
458#define NOVATEL_VENDOR_ID 0x1410
459#define ZTE_VENDOR_ID 0x19D2
460#define DELL_VENDOR_ID 0x413C
461#define REALTEK_VENDOR_ID 0x0bda
462#define SAMSUNG_VENDOR_ID 0x04e8
463#define LENOVO_VENDOR_ID 0x17ef
464#define NVIDIA_VENDOR_ID 0x0955
465
466static const struct usb_device_id products[] = {
467/* BLACKLIST !!
468 *
469 * First blacklist any products that are egregiously nonconformant
470 * with the CDC Ethernet specs. Minor braindamage we cope with; when
471 * they're not even trying, needing a separate driver is only the first
472 * of the differences to show up.
473 */
474
475#define ZAURUS_MASTER_INTERFACE \
476 .bInterfaceClass = USB_CLASS_COMM, \
477 .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \
478 .bInterfaceProtocol = USB_CDC_PROTO_NONE
479
480/* SA-1100 based Sharp Zaurus ("collie"), or compatible;
481 * wire-incompatible with true CDC Ethernet implementations.
482 * (And, it seems, needlessly so...)
483 */
484{
485 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
486 | USB_DEVICE_ID_MATCH_DEVICE,
487 .idVendor = 0x04DD,
488 .idProduct = 0x8004,
489 ZAURUS_MASTER_INTERFACE,
490 .driver_info = 0,
491},
492
493/* PXA-25x based Sharp Zaurii. Note that it seems some of these
494 * (later models especially) may have shipped only with firmware
495 * advertising false "CDC MDLM" compatibility ... but we're not
496 * clear which models did that, so for now let's assume the worst.
497 */
498{
499 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
500 | USB_DEVICE_ID_MATCH_DEVICE,
501 .idVendor = 0x04DD,
502 .idProduct = 0x8005, /* A-300 */
503 ZAURUS_MASTER_INTERFACE,
504 .driver_info = 0,
505}, {
506 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
507 | USB_DEVICE_ID_MATCH_DEVICE,
508 .idVendor = 0x04DD,
509 .idProduct = 0x8006, /* B-500/SL-5600 */
510 ZAURUS_MASTER_INTERFACE,
511 .driver_info = 0,
512}, {
513 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
514 | USB_DEVICE_ID_MATCH_DEVICE,
515 .idVendor = 0x04DD,
516 .idProduct = 0x8007, /* C-700 */
517 ZAURUS_MASTER_INTERFACE,
518 .driver_info = 0,
519}, {
520 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
521 | USB_DEVICE_ID_MATCH_DEVICE,
522 .idVendor = 0x04DD,
523 .idProduct = 0x9031, /* C-750 C-760 */
524 ZAURUS_MASTER_INTERFACE,
525 .driver_info = 0,
526}, {
527 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
528 | USB_DEVICE_ID_MATCH_DEVICE,
529 .idVendor = 0x04DD,
530 .idProduct = 0x9032, /* SL-6000 */
531 ZAURUS_MASTER_INTERFACE,
532 .driver_info = 0,
533}, {
534 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
535 | USB_DEVICE_ID_MATCH_DEVICE,
536 .idVendor = 0x04DD,
537 /* reported with some C860 units */
538 .idProduct = 0x9050, /* C-860 */
539 ZAURUS_MASTER_INTERFACE,
540 .driver_info = 0,
541},
542
543/* Olympus has some models with a Zaurus-compatible option.
544 * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
545 */
546{
547 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
548 | USB_DEVICE_ID_MATCH_DEVICE,
549 .idVendor = 0x07B4,
550 .idProduct = 0x0F02, /* R-1000 */
551 ZAURUS_MASTER_INTERFACE,
552 .driver_info = 0,
553},
554
555/* LG Electronics VL600 wants additional headers on every frame */
556{
557 USB_DEVICE_AND_INTERFACE_INFO(0x1004, 0x61aa, USB_CLASS_COMM,
558 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
559 .driver_info = 0,
560},
561
562/* Logitech Harmony 900 - uses the pseudo-MDLM (BLAN) driver */
563{
564 USB_DEVICE_AND_INTERFACE_INFO(0x046d, 0xc11f, USB_CLASS_COMM,
565 USB_CDC_SUBCLASS_MDLM, USB_CDC_PROTO_NONE),
566 .driver_info = 0,
567},
568
569/* Novatel USB551L and MC551 - handled by qmi_wwan */
570{
571 USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0xB001, USB_CLASS_COMM,
572 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
573 .driver_info = 0,
574},
575
576/* Novatel E362 - handled by qmi_wwan */
577{
578 USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9010, USB_CLASS_COMM,
579 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
580 .driver_info = 0,
581},
582
583/* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
584{
585 USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8195, USB_CLASS_COMM,
586 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
587 .driver_info = 0,
588},
589
590/* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
591{
592 USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8196, USB_CLASS_COMM,
593 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
594 .driver_info = 0,
595},
596
597/* Dell Wireless 5804 (Novatel E371) - handled by qmi_wwan */
598{
599 USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x819b, USB_CLASS_COMM,
600 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
601 .driver_info = 0,
602},
603
604/* Novatel Expedite E371 - handled by qmi_wwan */
605{
606 USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9011, USB_CLASS_COMM,
607 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
608 .driver_info = 0,
609},
610
611/* AnyDATA ADU960S - handled by qmi_wwan */
612{
613 USB_DEVICE_AND_INTERFACE_INFO(0x16d5, 0x650a, USB_CLASS_COMM,
614 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
615 .driver_info = 0,
616},
617
618/* Huawei E1820 - handled by qmi_wwan */
619{
620 USB_DEVICE_INTERFACE_NUMBER(HUAWEI_VENDOR_ID, 0x14ac, 1),
621 .driver_info = 0,
622},
623
624/* Realtek RTL8152 Based USB 2.0 Ethernet Adapters */
625{
626 USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8152, USB_CLASS_COMM,
627 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
628 .driver_info = 0,
629},
630
631/* Realtek RTL8153 Based USB 3.0 Ethernet Adapters */
632{
633 USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8153, USB_CLASS_COMM,
634 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
635 .driver_info = 0,
636},
637
638/* Samsung USB Ethernet Adapters */
639{
640 USB_DEVICE_AND_INTERFACE_INFO(SAMSUNG_VENDOR_ID, 0xa101, USB_CLASS_COMM,
641 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
642 .driver_info = 0,
643},
644
645/* Lenovo Thinkpad USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */
646{
647 USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x7205, USB_CLASS_COMM,
648 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
649 .driver_info = 0,
650},
651
652/* NVIDIA Tegra USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */
653{
654 USB_DEVICE_AND_INTERFACE_INFO(NVIDIA_VENDOR_ID, 0x09ff, USB_CLASS_COMM,
655 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
656 .driver_info = 0,
657},
658
659/* WHITELIST!!!
660 *
661 * CDC Ether uses two interfaces, not necessarily consecutive.
662 * We match the main interface, ignoring the optional device
663 * class so we could handle devices that aren't exclusively
664 * CDC ether.
665 *
666 * NOTE: this match must come AFTER entries blacklisting devices
667 * because of bugs/quirks in a given product (like Zaurus, above).
668 */
669{
670 /* ZTE (Vodafone) K3805-Z */
671 USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1003, USB_CLASS_COMM,
672 USB_CDC_SUBCLASS_ETHERNET,
673 USB_CDC_PROTO_NONE),
674 .driver_info = (unsigned long)&wwan_info,
675}, {
676 /* ZTE (Vodafone) K3806-Z */
677 USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1015, USB_CLASS_COMM,
678 USB_CDC_SUBCLASS_ETHERNET,
679 USB_CDC_PROTO_NONE),
680 .driver_info = (unsigned long)&wwan_info,
681}, {
682 /* ZTE (Vodafone) K4510-Z */
683 USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1173, USB_CLASS_COMM,
684 USB_CDC_SUBCLASS_ETHERNET,
685 USB_CDC_PROTO_NONE),
686 .driver_info = (unsigned long)&wwan_info,
687}, {
688 /* ZTE (Vodafone) K3770-Z */
689 USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1177, USB_CLASS_COMM,
690 USB_CDC_SUBCLASS_ETHERNET,
691 USB_CDC_PROTO_NONE),
692 .driver_info = (unsigned long)&wwan_info,
693}, {
694 /* ZTE (Vodafone) K3772-Z */
695 USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1181, USB_CLASS_COMM,
696 USB_CDC_SUBCLASS_ETHERNET,
697 USB_CDC_PROTO_NONE),
698 .driver_info = (unsigned long)&wwan_info,
699}, {
700 /* Telit modules */
701 USB_VENDOR_AND_INTERFACE_INFO(0x1bc7, USB_CLASS_COMM,
702 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
703 .driver_info = (kernel_ulong_t) &wwan_info,
704}, {
705 /* Dell DW5580 modules */
706 USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x81ba, USB_CLASS_COMM,
707 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
708 .driver_info = (kernel_ulong_t)&wwan_info,
709}, {
710 USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
711 USB_CDC_PROTO_NONE),
712 .driver_info = (unsigned long) &cdc_info,
713}, {
714 USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
715 USB_CDC_PROTO_NONE),
716 .driver_info = (unsigned long)&wwan_info,
717
718}, {
719 /* Various Huawei modems with a network port like the UMG1831 */
720 USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_COMM,
721 USB_CDC_SUBCLASS_ETHERNET, 255),
722 .driver_info = (unsigned long)&wwan_info,
723},
724 { }, /* END */
725};
726MODULE_DEVICE_TABLE(usb, products);
727
728static struct usb_driver cdc_driver = {
729 .name = "cdc_ether",
730 .id_table = products,
731 .probe = usbnet_probe,
732 .disconnect = usbnet_disconnect,
733 .suspend = usbnet_suspend,
734 .resume = usbnet_resume,
735 .reset_resume = usbnet_resume,
736 .supports_autosuspend = 1,
737 .disable_hub_initiated_lpm = 1,
738};
739
740module_usb_driver(cdc_driver);
741
742MODULE_AUTHOR("David Brownell");
743MODULE_DESCRIPTION("USB CDC Ethernet devices");
744MODULE_LICENSE("GPL");