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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 int usbnet_cdc_zte_bind(struct usbnet *dev, struct usb_interface *intf)
436{
437 int status = usbnet_cdc_bind(dev, intf);
438
439 if (!status && (dev->net->dev_addr[0] & 0x02))
440 eth_hw_addr_random(dev->net);
441
442 return status;
443}
444
445/* Make sure packets have correct destination MAC address
446 *
447 * A firmware bug observed on some devices (ZTE MF823/831/910) is that the
448 * device sends packets with a static, bogus, random MAC address (event if
449 * device MAC address has been updated). Always set MAC address to that of the
450 * device.
451 */
452static int usbnet_cdc_zte_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
453{
454 if (skb->len < ETH_HLEN || !(skb->data[0] & 0x02))
455 return 1;
456
457 skb_reset_mac_header(skb);
458 ether_addr_copy(eth_hdr(skb)->h_dest, dev->net->dev_addr);
459
460 return 1;
461}
462
463/* Ensure correct link state
464 *
465 * Some devices (ZTE MF823/831/910) export two carrier on notifications when
466 * connected. This causes the link state to be incorrect. Work around this by
467 * always setting the state to off, then on.
468 */
469void usbnet_cdc_zte_status(struct usbnet *dev, struct urb *urb)
470{
471 struct usb_cdc_notification *event;
472
473 if (urb->actual_length < sizeof(*event))
474 return;
475
476 event = urb->transfer_buffer;
477
478 if (event->bNotificationType != USB_CDC_NOTIFY_NETWORK_CONNECTION) {
479 usbnet_cdc_status(dev, urb);
480 return;
481 }
482
483 netif_dbg(dev, timer, dev->net, "CDC: carrier %s\n",
484 event->wValue ? "on" : "off");
485
486 if (event->wValue &&
487 netif_carrier_ok(dev->net))
488 netif_carrier_off(dev->net);
489
490 usbnet_link_change(dev, !!event->wValue, 0);
491}
492
493static const struct driver_info cdc_info = {
494 .description = "CDC Ethernet Device",
495 .flags = FLAG_ETHER | FLAG_POINTTOPOINT,
496 .bind = usbnet_cdc_bind,
497 .unbind = usbnet_cdc_unbind,
498 .status = usbnet_cdc_status,
499 .set_rx_mode = usbnet_cdc_update_filter,
500 .manage_power = usbnet_manage_power,
501};
502
503static const struct driver_info zte_cdc_info = {
504 .description = "ZTE CDC Ethernet Device",
505 .flags = FLAG_ETHER | FLAG_POINTTOPOINT,
506 .bind = usbnet_cdc_zte_bind,
507 .unbind = usbnet_cdc_unbind,
508 .status = usbnet_cdc_zte_status,
509 .set_rx_mode = usbnet_cdc_update_filter,
510 .manage_power = usbnet_manage_power,
511 .rx_fixup = usbnet_cdc_zte_rx_fixup,
512};
513
514static const struct driver_info wwan_info = {
515 .description = "Mobile Broadband Network Device",
516 .flags = FLAG_WWAN,
517 .bind = usbnet_cdc_bind,
518 .unbind = usbnet_cdc_unbind,
519 .status = usbnet_cdc_status,
520 .set_rx_mode = usbnet_cdc_update_filter,
521 .manage_power = usbnet_manage_power,
522};
523
524/*-------------------------------------------------------------------------*/
525
526#define HUAWEI_VENDOR_ID 0x12D1
527#define NOVATEL_VENDOR_ID 0x1410
528#define ZTE_VENDOR_ID 0x19D2
529#define DELL_VENDOR_ID 0x413C
530#define REALTEK_VENDOR_ID 0x0bda
531#define SAMSUNG_VENDOR_ID 0x04e8
532#define LENOVO_VENDOR_ID 0x17ef
533#define NVIDIA_VENDOR_ID 0x0955
534#define HP_VENDOR_ID 0x03f0
535
536static const struct usb_device_id products[] = {
537/* BLACKLIST !!
538 *
539 * First blacklist any products that are egregiously nonconformant
540 * with the CDC Ethernet specs. Minor braindamage we cope with; when
541 * they're not even trying, needing a separate driver is only the first
542 * of the differences to show up.
543 */
544
545#define ZAURUS_MASTER_INTERFACE \
546 .bInterfaceClass = USB_CLASS_COMM, \
547 .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \
548 .bInterfaceProtocol = USB_CDC_PROTO_NONE
549
550/* SA-1100 based Sharp Zaurus ("collie"), or compatible;
551 * wire-incompatible with true CDC Ethernet implementations.
552 * (And, it seems, needlessly so...)
553 */
554{
555 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
556 | USB_DEVICE_ID_MATCH_DEVICE,
557 .idVendor = 0x04DD,
558 .idProduct = 0x8004,
559 ZAURUS_MASTER_INTERFACE,
560 .driver_info = 0,
561},
562
563/* PXA-25x based Sharp Zaurii. Note that it seems some of these
564 * (later models especially) may have shipped only with firmware
565 * advertising false "CDC MDLM" compatibility ... but we're not
566 * clear which models did that, so for now let's assume the worst.
567 */
568{
569 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
570 | USB_DEVICE_ID_MATCH_DEVICE,
571 .idVendor = 0x04DD,
572 .idProduct = 0x8005, /* A-300 */
573 ZAURUS_MASTER_INTERFACE,
574 .driver_info = 0,
575}, {
576 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
577 | USB_DEVICE_ID_MATCH_DEVICE,
578 .idVendor = 0x04DD,
579 .idProduct = 0x8006, /* B-500/SL-5600 */
580 ZAURUS_MASTER_INTERFACE,
581 .driver_info = 0,
582}, {
583 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
584 | USB_DEVICE_ID_MATCH_DEVICE,
585 .idVendor = 0x04DD,
586 .idProduct = 0x8007, /* C-700 */
587 ZAURUS_MASTER_INTERFACE,
588 .driver_info = 0,
589}, {
590 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
591 | USB_DEVICE_ID_MATCH_DEVICE,
592 .idVendor = 0x04DD,
593 .idProduct = 0x9031, /* C-750 C-760 */
594 ZAURUS_MASTER_INTERFACE,
595 .driver_info = 0,
596}, {
597 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
598 | USB_DEVICE_ID_MATCH_DEVICE,
599 .idVendor = 0x04DD,
600 .idProduct = 0x9032, /* SL-6000 */
601 ZAURUS_MASTER_INTERFACE,
602 .driver_info = 0,
603}, {
604 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
605 | USB_DEVICE_ID_MATCH_DEVICE,
606 .idVendor = 0x04DD,
607 /* reported with some C860 units */
608 .idProduct = 0x9050, /* C-860 */
609 ZAURUS_MASTER_INTERFACE,
610 .driver_info = 0,
611},
612
613/* Olympus has some models with a Zaurus-compatible option.
614 * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
615 */
616{
617 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
618 | USB_DEVICE_ID_MATCH_DEVICE,
619 .idVendor = 0x07B4,
620 .idProduct = 0x0F02, /* R-1000 */
621 ZAURUS_MASTER_INTERFACE,
622 .driver_info = 0,
623},
624
625/* LG Electronics VL600 wants additional headers on every frame */
626{
627 USB_DEVICE_AND_INTERFACE_INFO(0x1004, 0x61aa, USB_CLASS_COMM,
628 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
629 .driver_info = 0,
630},
631
632/* Logitech Harmony 900 - uses the pseudo-MDLM (BLAN) driver */
633{
634 USB_DEVICE_AND_INTERFACE_INFO(0x046d, 0xc11f, USB_CLASS_COMM,
635 USB_CDC_SUBCLASS_MDLM, USB_CDC_PROTO_NONE),
636 .driver_info = 0,
637},
638
639/* Novatel USB551L and MC551 - handled by qmi_wwan */
640{
641 USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0xB001, USB_CLASS_COMM,
642 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
643 .driver_info = 0,
644},
645
646/* Novatel E362 - handled by qmi_wwan */
647{
648 USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9010, USB_CLASS_COMM,
649 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
650 .driver_info = 0,
651},
652
653/* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
654{
655 USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8195, USB_CLASS_COMM,
656 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
657 .driver_info = 0,
658},
659
660/* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
661{
662 USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8196, USB_CLASS_COMM,
663 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
664 .driver_info = 0,
665},
666
667/* Dell Wireless 5804 (Novatel E371) - handled by qmi_wwan */
668{
669 USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x819b, USB_CLASS_COMM,
670 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
671 .driver_info = 0,
672},
673
674/* Novatel Expedite E371 - handled by qmi_wwan */
675{
676 USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9011, USB_CLASS_COMM,
677 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
678 .driver_info = 0,
679},
680
681/* HP lt2523 (Novatel E371) - handled by qmi_wwan */
682{
683 USB_DEVICE_AND_INTERFACE_INFO(HP_VENDOR_ID, 0x421d, USB_CLASS_COMM,
684 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
685 .driver_info = 0,
686},
687
688/* AnyDATA ADU960S - handled by qmi_wwan */
689{
690 USB_DEVICE_AND_INTERFACE_INFO(0x16d5, 0x650a, USB_CLASS_COMM,
691 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
692 .driver_info = 0,
693},
694
695/* Huawei E1820 - handled by qmi_wwan */
696{
697 USB_DEVICE_INTERFACE_NUMBER(HUAWEI_VENDOR_ID, 0x14ac, 1),
698 .driver_info = 0,
699},
700
701/* Realtek RTL8152 Based USB 2.0 Ethernet Adapters */
702{
703 USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8152, USB_CLASS_COMM,
704 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
705 .driver_info = 0,
706},
707
708/* Realtek RTL8153 Based USB 3.0 Ethernet Adapters */
709{
710 USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8153, USB_CLASS_COMM,
711 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
712 .driver_info = 0,
713},
714
715/* Samsung USB Ethernet Adapters */
716{
717 USB_DEVICE_AND_INTERFACE_INFO(SAMSUNG_VENDOR_ID, 0xa101, USB_CLASS_COMM,
718 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
719 .driver_info = 0,
720},
721
722/* ThinkPad USB-C Dock (based on Realtek RTL8153) */
723{
724 USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x3062, USB_CLASS_COMM,
725 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
726 .driver_info = 0,
727},
728
729/* ThinkPad Thunderbolt 3 Dock (based on Realtek RTL8153) */
730{
731 USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x3069, USB_CLASS_COMM,
732 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
733 .driver_info = 0,
734},
735
736/* Lenovo Thinkpad USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */
737{
738 USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x7205, USB_CLASS_COMM,
739 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
740 .driver_info = 0,
741},
742
743/* Lenovo USB C to Ethernet Adapter (based on Realtek RTL8153) */
744{
745 USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x720c, USB_CLASS_COMM,
746 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
747 .driver_info = 0,
748},
749
750/* Lenovo USB-C Travel Hub (based on Realtek RTL8153) */
751{
752 USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x7214, USB_CLASS_COMM,
753 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
754 .driver_info = 0,
755},
756
757/* NVIDIA Tegra USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */
758{
759 USB_DEVICE_AND_INTERFACE_INFO(NVIDIA_VENDOR_ID, 0x09ff, USB_CLASS_COMM,
760 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
761 .driver_info = 0,
762},
763
764/* WHITELIST!!!
765 *
766 * CDC Ether uses two interfaces, not necessarily consecutive.
767 * We match the main interface, ignoring the optional device
768 * class so we could handle devices that aren't exclusively
769 * CDC ether.
770 *
771 * NOTE: this match must come AFTER entries blacklisting devices
772 * because of bugs/quirks in a given product (like Zaurus, above).
773 */
774{
775 /* ZTE (Vodafone) K3805-Z */
776 USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1003, USB_CLASS_COMM,
777 USB_CDC_SUBCLASS_ETHERNET,
778 USB_CDC_PROTO_NONE),
779 .driver_info = (unsigned long)&wwan_info,
780}, {
781 /* ZTE (Vodafone) K3806-Z */
782 USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1015, USB_CLASS_COMM,
783 USB_CDC_SUBCLASS_ETHERNET,
784 USB_CDC_PROTO_NONE),
785 .driver_info = (unsigned long)&wwan_info,
786}, {
787 /* ZTE (Vodafone) K4510-Z */
788 USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1173, USB_CLASS_COMM,
789 USB_CDC_SUBCLASS_ETHERNET,
790 USB_CDC_PROTO_NONE),
791 .driver_info = (unsigned long)&wwan_info,
792}, {
793 /* ZTE (Vodafone) K3770-Z */
794 USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1177, USB_CLASS_COMM,
795 USB_CDC_SUBCLASS_ETHERNET,
796 USB_CDC_PROTO_NONE),
797 .driver_info = (unsigned long)&wwan_info,
798}, {
799 /* ZTE (Vodafone) K3772-Z */
800 USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1181, USB_CLASS_COMM,
801 USB_CDC_SUBCLASS_ETHERNET,
802 USB_CDC_PROTO_NONE),
803 .driver_info = (unsigned long)&wwan_info,
804}, {
805 /* Telit modules */
806 USB_VENDOR_AND_INTERFACE_INFO(0x1bc7, USB_CLASS_COMM,
807 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
808 .driver_info = (kernel_ulong_t) &wwan_info,
809}, {
810 /* Dell DW5580 modules */
811 USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x81ba, USB_CLASS_COMM,
812 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
813 .driver_info = (kernel_ulong_t)&wwan_info,
814}, {
815 /* ZTE modules */
816 USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, USB_CLASS_COMM,
817 USB_CDC_SUBCLASS_ETHERNET,
818 USB_CDC_PROTO_NONE),
819 .driver_info = (unsigned long)&zte_cdc_info,
820}, {
821 USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
822 USB_CDC_PROTO_NONE),
823 .driver_info = (unsigned long) &cdc_info,
824}, {
825 USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
826 USB_CDC_PROTO_NONE),
827 .driver_info = (unsigned long)&wwan_info,
828
829}, {
830 /* Various Huawei modems with a network port like the UMG1831 */
831 USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_COMM,
832 USB_CDC_SUBCLASS_ETHERNET, 255),
833 .driver_info = (unsigned long)&wwan_info,
834},
835 { }, /* END */
836};
837MODULE_DEVICE_TABLE(usb, products);
838
839static struct usb_driver cdc_driver = {
840 .name = "cdc_ether",
841 .id_table = products,
842 .probe = usbnet_probe,
843 .disconnect = usbnet_disconnect,
844 .suspend = usbnet_suspend,
845 .resume = usbnet_resume,
846 .reset_resume = usbnet_resume,
847 .supports_autosuspend = 1,
848 .disable_hub_initiated_lpm = 1,
849};
850
851module_usb_driver(cdc_driver);
852
853MODULE_AUTHOR("David Brownell");
854MODULE_DESCRIPTION("USB CDC Ethernet devices");
855MODULE_LICENSE("GPL");