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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * CDC Ethernet based networking peripherals
4 * Copyright (C) 2003-2005 by David Brownell
5 * Copyright (C) 2006 by Ole Andre Vadla Ravnas (ActiveSync)
6 */
7
8// #define DEBUG // error path messages, extra info
9// #define VERBOSE // more; success messages
10
11#include <linux/module.h>
12#include <linux/netdevice.h>
13#include <linux/etherdevice.h>
14#include <linux/ethtool.h>
15#include <linux/workqueue.h>
16#include <linux/mii.h>
17#include <linux/usb.h>
18#include <linux/usb/cdc.h>
19#include <linux/usb/usbnet.h>
20
21
22#if IS_ENABLED(CONFIG_USB_NET_RNDIS_HOST)
23
24static int is_rndis(struct usb_interface_descriptor *desc)
25{
26 return (desc->bInterfaceClass == USB_CLASS_COMM &&
27 desc->bInterfaceSubClass == 2 &&
28 desc->bInterfaceProtocol == 0xff);
29}
30
31static int is_activesync(struct usb_interface_descriptor *desc)
32{
33 return (desc->bInterfaceClass == USB_CLASS_MISC &&
34 desc->bInterfaceSubClass == 1 &&
35 desc->bInterfaceProtocol == 1);
36}
37
38static int is_wireless_rndis(struct usb_interface_descriptor *desc)
39{
40 return (desc->bInterfaceClass == USB_CLASS_WIRELESS_CONTROLLER &&
41 desc->bInterfaceSubClass == 1 &&
42 desc->bInterfaceProtocol == 3);
43}
44
45static int is_novatel_rndis(struct usb_interface_descriptor *desc)
46{
47 return (desc->bInterfaceClass == USB_CLASS_MISC &&
48 desc->bInterfaceSubClass == 4 &&
49 desc->bInterfaceProtocol == 1);
50}
51
52#else
53
54#define is_rndis(desc) 0
55#define is_activesync(desc) 0
56#define is_wireless_rndis(desc) 0
57#define is_novatel_rndis(desc) 0
58
59#endif
60
61static const u8 mbm_guid[16] = {
62 0xa3, 0x17, 0xa8, 0x8b, 0x04, 0x5e, 0x4f, 0x01,
63 0xa6, 0x07, 0xc0, 0xff, 0xcb, 0x7e, 0x39, 0x2a,
64};
65
66void usbnet_cdc_update_filter(struct usbnet *dev)
67{
68 struct net_device *net = dev->net;
69
70 u16 cdc_filter = USB_CDC_PACKET_TYPE_DIRECTED
71 | USB_CDC_PACKET_TYPE_BROADCAST;
72
73 /* filtering on the device is an optional feature and not worth
74 * the hassle so we just roughly care about snooping and if any
75 * multicast is requested, we take every multicast
76 */
77 if (net->flags & IFF_PROMISC)
78 cdc_filter |= USB_CDC_PACKET_TYPE_PROMISCUOUS;
79 if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI))
80 cdc_filter |= USB_CDC_PACKET_TYPE_ALL_MULTICAST;
81
82 usb_control_msg(dev->udev,
83 usb_sndctrlpipe(dev->udev, 0),
84 USB_CDC_SET_ETHERNET_PACKET_FILTER,
85 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
86 cdc_filter,
87 dev->intf->cur_altsetting->desc.bInterfaceNumber,
88 NULL,
89 0,
90 USB_CTRL_SET_TIMEOUT
91 );
92}
93EXPORT_SYMBOL_GPL(usbnet_cdc_update_filter);
94
95/* probes control interface, claims data interface, collects the bulk
96 * endpoints, activates data interface (if needed), maybe sets MTU.
97 * all pure cdc, except for certain firmware workarounds, and knowing
98 * that rndis uses one different rule.
99 */
100int usbnet_generic_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
101{
102 u8 *buf = intf->cur_altsetting->extra;
103 int len = intf->cur_altsetting->extralen;
104 struct usb_interface_descriptor *d;
105 struct cdc_state *info = (void *) &dev->data;
106 int status;
107 int rndis;
108 bool android_rndis_quirk = false;
109 struct usb_driver *driver = driver_of(intf);
110 struct usb_cdc_parsed_header header;
111
112 if (sizeof(dev->data) < sizeof(*info))
113 return -EDOM;
114
115 /* expect strict spec conformance for the descriptors, but
116 * cope with firmware which stores them in the wrong place
117 */
118 if (len == 0 && dev->udev->actconfig->extralen) {
119 /* Motorola SB4100 (and others: Brad Hards says it's
120 * from a Broadcom design) put CDC descriptors here
121 */
122 buf = dev->udev->actconfig->extra;
123 len = dev->udev->actconfig->extralen;
124 dev_dbg(&intf->dev, "CDC descriptors on config\n");
125 }
126
127 /* Maybe CDC descriptors are after the endpoint? This bug has
128 * been seen on some 2Wire Inc RNDIS-ish products.
129 */
130 if (len == 0) {
131 struct usb_host_endpoint *hep;
132
133 hep = intf->cur_altsetting->endpoint;
134 if (hep) {
135 buf = hep->extra;
136 len = hep->extralen;
137 }
138 if (len)
139 dev_dbg(&intf->dev,
140 "CDC descriptors on endpoint\n");
141 }
142
143 /* this assumes that if there's a non-RNDIS vendor variant
144 * of cdc-acm, it'll fail RNDIS requests cleanly.
145 */
146 rndis = (is_rndis(&intf->cur_altsetting->desc) ||
147 is_activesync(&intf->cur_altsetting->desc) ||
148 is_wireless_rndis(&intf->cur_altsetting->desc) ||
149 is_novatel_rndis(&intf->cur_altsetting->desc));
150
151 memset(info, 0, sizeof(*info));
152 info->control = intf;
153
154 cdc_parse_cdc_header(&header, intf, buf, len);
155
156 info->u = header.usb_cdc_union_desc;
157 info->header = header.usb_cdc_header_desc;
158 info->ether = header.usb_cdc_ether_desc;
159 if (!info->u) {
160 if (rndis)
161 goto skip;
162 else /* in that case a quirk is mandatory */
163 goto bad_desc;
164 }
165 /* we need a master/control interface (what we're
166 * probed with) and a slave/data interface; union
167 * descriptors sort this all out.
168 */
169 info->control = usb_ifnum_to_if(dev->udev, info->u->bMasterInterface0);
170 info->data = usb_ifnum_to_if(dev->udev, info->u->bSlaveInterface0);
171 if (!info->control || !info->data) {
172 dev_dbg(&intf->dev,
173 "master #%u/%p slave #%u/%p\n",
174 info->u->bMasterInterface0,
175 info->control,
176 info->u->bSlaveInterface0,
177 info->data);
178 /* fall back to hard-wiring for RNDIS */
179 if (rndis) {
180 android_rndis_quirk = true;
181 goto skip;
182 }
183 goto bad_desc;
184 }
185 if (info->control != intf) {
186 dev_dbg(&intf->dev, "bogus CDC Union\n");
187 /* Ambit USB Cable Modem (and maybe others)
188 * interchanges master and slave interface.
189 */
190 if (info->data == intf) {
191 info->data = info->control;
192 info->control = intf;
193 } else
194 goto bad_desc;
195 }
196
197 /* some devices merge these - skip class check */
198 if (info->control == info->data)
199 goto skip;
200
201 /* a data interface altsetting does the real i/o */
202 d = &info->data->cur_altsetting->desc;
203 if (d->bInterfaceClass != USB_CLASS_CDC_DATA) {
204 dev_dbg(&intf->dev, "slave class %u\n", d->bInterfaceClass);
205 goto bad_desc;
206 }
207skip:
208 /* Communcation class functions with bmCapabilities are not
209 * RNDIS. But some Wireless class RNDIS functions use
210 * bmCapabilities for their own purpose. The failsafe is
211 * therefore applied only to Communication class RNDIS
212 * functions. The rndis test is redundant, but a cheap
213 * optimization.
214 */
215 if (rndis && is_rndis(&intf->cur_altsetting->desc) &&
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 && info->ether->wMaxSegmentSize) {
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 return 0;
314
315bad_desc:
316 dev_info(&dev->udev->dev, "bad CDC descriptors\n");
317 return -ENODEV;
318}
319EXPORT_SYMBOL_GPL(usbnet_generic_cdc_bind);
320
321
322/* like usbnet_generic_cdc_bind() but handles filter initialization
323 * correctly
324 */
325int usbnet_ether_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
326{
327 int rv;
328
329 rv = usbnet_generic_cdc_bind(dev, intf);
330 if (rv < 0)
331 goto bail_out;
332
333 /* Some devices don't initialise properly. In particular
334 * the packet filter is not reset. There are devices that
335 * don't do reset all the way. So the packet filter should
336 * be set to a sane initial value.
337 */
338 usbnet_cdc_update_filter(dev);
339
340bail_out:
341 return rv;
342}
343EXPORT_SYMBOL_GPL(usbnet_ether_cdc_bind);
344
345void usbnet_cdc_unbind(struct usbnet *dev, struct usb_interface *intf)
346{
347 struct cdc_state *info = (void *) &dev->data;
348 struct usb_driver *driver = driver_of(intf);
349
350 /* combined interface - nothing to do */
351 if (info->data == info->control)
352 return;
353
354 /* disconnect master --> disconnect slave */
355 if (intf == info->control && info->data) {
356 /* ensure immediate exit from usbnet_disconnect */
357 usb_set_intfdata(info->data, NULL);
358 usb_driver_release_interface(driver, info->data);
359 info->data = NULL;
360 }
361
362 /* and vice versa (just in case) */
363 else if (intf == info->data && info->control) {
364 /* ensure immediate exit from usbnet_disconnect */
365 usb_set_intfdata(info->control, NULL);
366 usb_driver_release_interface(driver, info->control);
367 info->control = NULL;
368 }
369}
370EXPORT_SYMBOL_GPL(usbnet_cdc_unbind);
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
382static void dumpspeed(struct usbnet *dev, __le32 *speeds)
383{
384 netif_info(dev, timer, dev->net,
385 "link speeds: %u kbps up, %u kbps down\n",
386 __le32_to_cpu(speeds[0]) / 1000,
387 __le32_to_cpu(speeds[1]) / 1000);
388}
389
390void usbnet_cdc_status(struct usbnet *dev, struct urb *urb)
391{
392 struct usb_cdc_notification *event;
393
394 if (urb->actual_length < sizeof(*event))
395 return;
396
397 /* SPEED_CHANGE can get split into two 8-byte packets */
398 if (test_and_clear_bit(EVENT_STS_SPLIT, &dev->flags)) {
399 dumpspeed(dev, (__le32 *) urb->transfer_buffer);
400 return;
401 }
402
403 event = urb->transfer_buffer;
404 switch (event->bNotificationType) {
405 case USB_CDC_NOTIFY_NETWORK_CONNECTION:
406 netif_dbg(dev, timer, dev->net, "CDC: carrier %s\n",
407 event->wValue ? "on" : "off");
408 usbnet_link_change(dev, !!event->wValue, 0);
409 break;
410 case USB_CDC_NOTIFY_SPEED_CHANGE: /* tx/rx rates */
411 netif_dbg(dev, timer, dev->net, "CDC: speed change (len %d)\n",
412 urb->actual_length);
413 if (urb->actual_length != (sizeof(*event) + 8))
414 set_bit(EVENT_STS_SPLIT, &dev->flags);
415 else
416 dumpspeed(dev, (__le32 *) &event[1]);
417 break;
418 /* USB_CDC_NOTIFY_RESPONSE_AVAILABLE can happen too (e.g. RNDIS),
419 * but there are no standard formats for the response data.
420 */
421 default:
422 netdev_err(dev->net, "CDC: unexpected notification %02x!\n",
423 event->bNotificationType);
424 break;
425 }
426}
427EXPORT_SYMBOL_GPL(usbnet_cdc_status);
428
429int usbnet_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
430{
431 int status;
432 struct cdc_state *info = (void *) &dev->data;
433
434 BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data)
435 < sizeof(struct cdc_state)));
436
437 status = usbnet_ether_cdc_bind(dev, intf);
438 if (status < 0)
439 return status;
440
441 status = usbnet_get_ethernet_addr(dev, info->ether->iMACAddress);
442 if (status < 0) {
443 usb_set_intfdata(info->data, NULL);
444 usb_driver_release_interface(driver_of(intf), info->data);
445 return status;
446 }
447
448 return 0;
449}
450EXPORT_SYMBOL_GPL(usbnet_cdc_bind);
451
452static int usbnet_cdc_zte_bind(struct usbnet *dev, struct usb_interface *intf)
453{
454 int status = usbnet_cdc_bind(dev, intf);
455
456 if (!status && (dev->net->dev_addr[0] & 0x02))
457 eth_hw_addr_random(dev->net);
458
459 return status;
460}
461
462/* Make sure packets have correct destination MAC address
463 *
464 * A firmware bug observed on some devices (ZTE MF823/831/910) is that the
465 * device sends packets with a static, bogus, random MAC address (event if
466 * device MAC address has been updated). Always set MAC address to that of the
467 * device.
468 */
469static int usbnet_cdc_zte_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
470{
471 if (skb->len < ETH_HLEN || !(skb->data[0] & 0x02))
472 return 1;
473
474 skb_reset_mac_header(skb);
475 ether_addr_copy(eth_hdr(skb)->h_dest, dev->net->dev_addr);
476
477 return 1;
478}
479
480/* Ensure correct link state
481 *
482 * Some devices (ZTE MF823/831/910) export two carrier on notifications when
483 * connected. This causes the link state to be incorrect. Work around this by
484 * always setting the state to off, then on.
485 */
486static void usbnet_cdc_zte_status(struct usbnet *dev, struct urb *urb)
487{
488 struct usb_cdc_notification *event;
489
490 if (urb->actual_length < sizeof(*event))
491 return;
492
493 event = urb->transfer_buffer;
494
495 if (event->bNotificationType != USB_CDC_NOTIFY_NETWORK_CONNECTION) {
496 usbnet_cdc_status(dev, urb);
497 return;
498 }
499
500 netif_dbg(dev, timer, dev->net, "CDC: carrier %s\n",
501 event->wValue ? "on" : "off");
502
503 if (event->wValue &&
504 netif_carrier_ok(dev->net))
505 netif_carrier_off(dev->net);
506
507 usbnet_link_change(dev, !!event->wValue, 0);
508}
509
510static const struct driver_info cdc_info = {
511 .description = "CDC Ethernet Device",
512 .flags = FLAG_ETHER | FLAG_POINTTOPOINT,
513 .bind = usbnet_cdc_bind,
514 .unbind = usbnet_cdc_unbind,
515 .status = usbnet_cdc_status,
516 .set_rx_mode = usbnet_cdc_update_filter,
517 .manage_power = usbnet_manage_power,
518};
519
520static const struct driver_info zte_cdc_info = {
521 .description = "ZTE CDC Ethernet Device",
522 .flags = FLAG_ETHER | FLAG_POINTTOPOINT,
523 .bind = usbnet_cdc_zte_bind,
524 .unbind = usbnet_cdc_unbind,
525 .status = usbnet_cdc_zte_status,
526 .set_rx_mode = usbnet_cdc_update_filter,
527 .manage_power = usbnet_manage_power,
528 .rx_fixup = usbnet_cdc_zte_rx_fixup,
529};
530
531static const struct driver_info wwan_info = {
532 .description = "Mobile Broadband Network Device",
533 .flags = FLAG_WWAN,
534 .bind = usbnet_cdc_bind,
535 .unbind = usbnet_cdc_unbind,
536 .status = usbnet_cdc_status,
537 .set_rx_mode = usbnet_cdc_update_filter,
538 .manage_power = usbnet_manage_power,
539};
540
541/*-------------------------------------------------------------------------*/
542
543#define HUAWEI_VENDOR_ID 0x12D1
544#define NOVATEL_VENDOR_ID 0x1410
545#define ZTE_VENDOR_ID 0x19D2
546#define DELL_VENDOR_ID 0x413C
547#define REALTEK_VENDOR_ID 0x0bda
548#define SAMSUNG_VENDOR_ID 0x04e8
549#define LENOVO_VENDOR_ID 0x17ef
550#define LINKSYS_VENDOR_ID 0x13b1
551#define NVIDIA_VENDOR_ID 0x0955
552#define HP_VENDOR_ID 0x03f0
553#define MICROSOFT_VENDOR_ID 0x045e
554#define UBLOX_VENDOR_ID 0x1546
555#define TPLINK_VENDOR_ID 0x2357
556#define AQUANTIA_VENDOR_ID 0x2eca
557#define ASIX_VENDOR_ID 0x0b95
558
559static const struct usb_device_id products[] = {
560/* BLACKLIST !!
561 *
562 * First blacklist any products that are egregiously nonconformant
563 * with the CDC Ethernet specs. Minor braindamage we cope with; when
564 * they're not even trying, needing a separate driver is only the first
565 * of the differences to show up.
566 */
567
568#define ZAURUS_MASTER_INTERFACE \
569 .bInterfaceClass = USB_CLASS_COMM, \
570 .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \
571 .bInterfaceProtocol = USB_CDC_PROTO_NONE
572
573/* SA-1100 based Sharp Zaurus ("collie"), or compatible;
574 * wire-incompatible with true CDC Ethernet implementations.
575 * (And, it seems, needlessly so...)
576 */
577{
578 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
579 | USB_DEVICE_ID_MATCH_DEVICE,
580 .idVendor = 0x04DD,
581 .idProduct = 0x8004,
582 ZAURUS_MASTER_INTERFACE,
583 .driver_info = 0,
584},
585
586/* PXA-25x based Sharp Zaurii. Note that it seems some of these
587 * (later models especially) may have shipped only with firmware
588 * advertising false "CDC MDLM" compatibility ... but we're not
589 * clear which models did that, so for now let's assume the worst.
590 */
591{
592 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
593 | USB_DEVICE_ID_MATCH_DEVICE,
594 .idVendor = 0x04DD,
595 .idProduct = 0x8005, /* A-300 */
596 ZAURUS_MASTER_INTERFACE,
597 .driver_info = 0,
598}, {
599 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
600 | USB_DEVICE_ID_MATCH_DEVICE,
601 .idVendor = 0x04DD,
602 .idProduct = 0x8006, /* B-500/SL-5600 */
603 ZAURUS_MASTER_INTERFACE,
604 .driver_info = 0,
605}, {
606 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
607 | USB_DEVICE_ID_MATCH_DEVICE,
608 .idVendor = 0x04DD,
609 .idProduct = 0x8007, /* C-700 */
610 ZAURUS_MASTER_INTERFACE,
611 .driver_info = 0,
612}, {
613 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
614 | USB_DEVICE_ID_MATCH_DEVICE,
615 .idVendor = 0x04DD,
616 .idProduct = 0x9031, /* C-750 C-760 */
617 ZAURUS_MASTER_INTERFACE,
618 .driver_info = 0,
619}, {
620 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
621 | USB_DEVICE_ID_MATCH_DEVICE,
622 .idVendor = 0x04DD,
623 .idProduct = 0x9032, /* SL-6000 */
624 ZAURUS_MASTER_INTERFACE,
625 .driver_info = 0,
626}, {
627 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
628 | USB_DEVICE_ID_MATCH_DEVICE,
629 .idVendor = 0x04DD,
630 /* reported with some C860 units */
631 .idProduct = 0x9050, /* C-860 */
632 ZAURUS_MASTER_INTERFACE,
633 .driver_info = 0,
634},
635
636/* Olympus has some models with a Zaurus-compatible option.
637 * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
638 */
639{
640 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
641 | USB_DEVICE_ID_MATCH_DEVICE,
642 .idVendor = 0x07B4,
643 .idProduct = 0x0F02, /* R-1000 */
644 ZAURUS_MASTER_INTERFACE,
645 .driver_info = 0,
646},
647
648/* LG Electronics VL600 wants additional headers on every frame */
649{
650 USB_DEVICE_AND_INTERFACE_INFO(0x1004, 0x61aa, USB_CLASS_COMM,
651 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
652 .driver_info = 0,
653},
654
655/* Logitech Harmony 900 - uses the pseudo-MDLM (BLAN) driver */
656{
657 USB_DEVICE_AND_INTERFACE_INFO(0x046d, 0xc11f, USB_CLASS_COMM,
658 USB_CDC_SUBCLASS_MDLM, USB_CDC_PROTO_NONE),
659 .driver_info = 0,
660},
661
662/* Novatel USB551L and MC551 - handled by qmi_wwan */
663{
664 USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0xB001, USB_CLASS_COMM,
665 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
666 .driver_info = 0,
667},
668
669/* Novatel E362 - handled by qmi_wwan */
670{
671 USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9010, USB_CLASS_COMM,
672 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
673 .driver_info = 0,
674},
675
676/* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
677{
678 USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8195, USB_CLASS_COMM,
679 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
680 .driver_info = 0,
681},
682
683/* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
684{
685 USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8196, USB_CLASS_COMM,
686 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
687 .driver_info = 0,
688},
689
690/* Dell Wireless 5804 (Novatel E371) - handled by qmi_wwan */
691{
692 USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x819b, USB_CLASS_COMM,
693 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
694 .driver_info = 0,
695},
696
697/* Novatel Expedite E371 - handled by qmi_wwan */
698{
699 USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9011, USB_CLASS_COMM,
700 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
701 .driver_info = 0,
702},
703
704/* HP lt2523 (Novatel E371) - handled by qmi_wwan */
705{
706 USB_DEVICE_AND_INTERFACE_INFO(HP_VENDOR_ID, 0x421d, USB_CLASS_COMM,
707 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
708 .driver_info = 0,
709},
710
711/* AnyDATA ADU960S - handled by qmi_wwan */
712{
713 USB_DEVICE_AND_INTERFACE_INFO(0x16d5, 0x650a, USB_CLASS_COMM,
714 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
715 .driver_info = 0,
716},
717
718/* Huawei E1820 - handled by qmi_wwan */
719{
720 USB_DEVICE_INTERFACE_NUMBER(HUAWEI_VENDOR_ID, 0x14ac, 1),
721 .driver_info = 0,
722},
723
724/* Realtek RTL8152 Based USB 2.0 Ethernet Adapters */
725{
726 USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8152, USB_CLASS_COMM,
727 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
728 .driver_info = 0,
729},
730
731/* Realtek RTL8153 Based USB 3.0 Ethernet Adapters */
732{
733 USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8153, USB_CLASS_COMM,
734 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
735 .driver_info = 0,
736},
737
738/* Samsung USB Ethernet Adapters */
739{
740 USB_DEVICE_AND_INTERFACE_INFO(SAMSUNG_VENDOR_ID, 0xa101, USB_CLASS_COMM,
741 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
742 .driver_info = 0,
743},
744
745#if IS_ENABLED(CONFIG_USB_RTL8152)
746/* Linksys USB3GIGV1 Ethernet Adapter */
747{
748 USB_DEVICE_AND_INTERFACE_INFO(LINKSYS_VENDOR_ID, 0x0041, USB_CLASS_COMM,
749 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
750 .driver_info = 0,
751},
752#endif
753
754/* ThinkPad USB-C Dock (based on Realtek RTL8153) */
755{
756 USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x3062, USB_CLASS_COMM,
757 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
758 .driver_info = 0,
759},
760
761/* ThinkPad Thunderbolt 3 Dock (based on Realtek RTL8153) */
762{
763 USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x3069, USB_CLASS_COMM,
764 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
765 .driver_info = 0,
766},
767
768/* ThinkPad Thunderbolt 3 Dock Gen 2 (based on Realtek RTL8153) */
769{
770 USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x3082, USB_CLASS_COMM,
771 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
772 .driver_info = 0,
773},
774
775/* Lenovo Thinkpad USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */
776{
777 USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x7205, USB_CLASS_COMM,
778 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
779 .driver_info = 0,
780},
781
782/* Lenovo USB C to Ethernet Adapter (based on Realtek RTL8153) */
783{
784 USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x720c, USB_CLASS_COMM,
785 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
786 .driver_info = 0,
787},
788
789/* Lenovo USB-C Travel Hub (based on Realtek RTL8153) */
790{
791 USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x7214, USB_CLASS_COMM,
792 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
793 .driver_info = 0,
794},
795
796/* ThinkPad USB-C Dock Gen 2 (based on Realtek RTL8153) */
797{
798 USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0xa387, USB_CLASS_COMM,
799 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
800 .driver_info = 0,
801},
802
803/* NVIDIA Tegra USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */
804{
805 USB_DEVICE_AND_INTERFACE_INFO(NVIDIA_VENDOR_ID, 0x09ff, USB_CLASS_COMM,
806 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
807 .driver_info = 0,
808},
809
810/* Microsoft Surface 2 dock (based on Realtek RTL8152) */
811{
812 USB_DEVICE_AND_INTERFACE_INFO(MICROSOFT_VENDOR_ID, 0x07ab, USB_CLASS_COMM,
813 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
814 .driver_info = 0,
815},
816
817/* Microsoft Surface Ethernet Adapter (based on Realtek RTL8153) */
818{
819 USB_DEVICE_AND_INTERFACE_INFO(MICROSOFT_VENDOR_ID, 0x07c6, USB_CLASS_COMM,
820 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
821 .driver_info = 0,
822},
823
824/* Microsoft Surface Ethernet Adapter (based on Realtek RTL8153B) */
825{
826 USB_DEVICE_AND_INTERFACE_INFO(MICROSOFT_VENDOR_ID, 0x0927, USB_CLASS_COMM,
827 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
828 .driver_info = 0,
829},
830
831/* TP-LINK UE300 USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */
832{
833 USB_DEVICE_AND_INTERFACE_INFO(TPLINK_VENDOR_ID, 0x0601, USB_CLASS_COMM,
834 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
835 .driver_info = 0,
836},
837
838/* Aquantia AQtion USB to 5GbE Controller (based on AQC111U) */
839{
840 USB_DEVICE_AND_INTERFACE_INFO(AQUANTIA_VENDOR_ID, 0xc101,
841 USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
842 USB_CDC_PROTO_NONE),
843 .driver_info = 0,
844},
845
846/* ASIX USB 3.1 Gen1 to 5G Multi-Gigabit Ethernet Adapter(based on AQC111U) */
847{
848 USB_DEVICE_AND_INTERFACE_INFO(ASIX_VENDOR_ID, 0x2790, USB_CLASS_COMM,
849 USB_CDC_SUBCLASS_ETHERNET,
850 USB_CDC_PROTO_NONE),
851 .driver_info = 0,
852},
853
854/* ASIX USB 3.1 Gen1 to 2.5G Multi-Gigabit Ethernet Adapter(based on AQC112U) */
855{
856 USB_DEVICE_AND_INTERFACE_INFO(ASIX_VENDOR_ID, 0x2791, USB_CLASS_COMM,
857 USB_CDC_SUBCLASS_ETHERNET,
858 USB_CDC_PROTO_NONE),
859 .driver_info = 0,
860},
861
862/* USB-C 3.1 to 5GBASE-T Ethernet Adapter (based on AQC111U) */
863{
864 USB_DEVICE_AND_INTERFACE_INFO(0x20f4, 0xe05a, USB_CLASS_COMM,
865 USB_CDC_SUBCLASS_ETHERNET,
866 USB_CDC_PROTO_NONE),
867 .driver_info = 0,
868},
869
870/* QNAP QNA-UC5G1T USB to 5GbE Adapter (based on AQC111U) */
871{
872 USB_DEVICE_AND_INTERFACE_INFO(0x1c04, 0x0015, USB_CLASS_COMM,
873 USB_CDC_SUBCLASS_ETHERNET,
874 USB_CDC_PROTO_NONE),
875 .driver_info = 0,
876},
877
878/* WHITELIST!!!
879 *
880 * CDC Ether uses two interfaces, not necessarily consecutive.
881 * We match the main interface, ignoring the optional device
882 * class so we could handle devices that aren't exclusively
883 * CDC ether.
884 *
885 * NOTE: this match must come AFTER entries blacklisting devices
886 * because of bugs/quirks in a given product (like Zaurus, above).
887 */
888{
889 /* ZTE (Vodafone) K3805-Z */
890 USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1003, USB_CLASS_COMM,
891 USB_CDC_SUBCLASS_ETHERNET,
892 USB_CDC_PROTO_NONE),
893 .driver_info = (unsigned long)&wwan_info,
894}, {
895 /* ZTE (Vodafone) K3806-Z */
896 USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1015, USB_CLASS_COMM,
897 USB_CDC_SUBCLASS_ETHERNET,
898 USB_CDC_PROTO_NONE),
899 .driver_info = (unsigned long)&wwan_info,
900}, {
901 /* ZTE (Vodafone) K4510-Z */
902 USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1173, USB_CLASS_COMM,
903 USB_CDC_SUBCLASS_ETHERNET,
904 USB_CDC_PROTO_NONE),
905 .driver_info = (unsigned long)&wwan_info,
906}, {
907 /* ZTE (Vodafone) K3770-Z */
908 USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1177, USB_CLASS_COMM,
909 USB_CDC_SUBCLASS_ETHERNET,
910 USB_CDC_PROTO_NONE),
911 .driver_info = (unsigned long)&wwan_info,
912}, {
913 /* ZTE (Vodafone) K3772-Z */
914 USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1181, USB_CLASS_COMM,
915 USB_CDC_SUBCLASS_ETHERNET,
916 USB_CDC_PROTO_NONE),
917 .driver_info = (unsigned long)&wwan_info,
918}, {
919 /* Telit modules */
920 USB_VENDOR_AND_INTERFACE_INFO(0x1bc7, USB_CLASS_COMM,
921 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
922 .driver_info = (kernel_ulong_t) &wwan_info,
923}, {
924 /* Dell DW5580 modules */
925 USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x81ba, USB_CLASS_COMM,
926 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
927 .driver_info = (kernel_ulong_t)&wwan_info,
928}, {
929 /* Huawei ME906 and ME909 */
930 USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x15c1, USB_CLASS_COMM,
931 USB_CDC_SUBCLASS_ETHERNET,
932 USB_CDC_PROTO_NONE),
933 .driver_info = (unsigned long)&wwan_info,
934}, {
935 /* ZTE modules */
936 USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, USB_CLASS_COMM,
937 USB_CDC_SUBCLASS_ETHERNET,
938 USB_CDC_PROTO_NONE),
939 .driver_info = (unsigned long)&zte_cdc_info,
940}, {
941 /* U-blox TOBY-L2 */
942 USB_DEVICE_AND_INTERFACE_INFO(UBLOX_VENDOR_ID, 0x1143, USB_CLASS_COMM,
943 USB_CDC_SUBCLASS_ETHERNET,
944 USB_CDC_PROTO_NONE),
945 .driver_info = (unsigned long)&wwan_info,
946}, {
947 /* U-blox SARA-U2 */
948 USB_DEVICE_AND_INTERFACE_INFO(UBLOX_VENDOR_ID, 0x1104, USB_CLASS_COMM,
949 USB_CDC_SUBCLASS_ETHERNET,
950 USB_CDC_PROTO_NONE),
951 .driver_info = (unsigned long)&wwan_info,
952}, {
953 /* Cinterion PLS8 modem by GEMALTO */
954 USB_DEVICE_AND_INTERFACE_INFO(0x1e2d, 0x0061, USB_CLASS_COMM,
955 USB_CDC_SUBCLASS_ETHERNET,
956 USB_CDC_PROTO_NONE),
957 .driver_info = (unsigned long)&wwan_info,
958}, {
959 /* Cinterion AHS3 modem by GEMALTO */
960 USB_DEVICE_AND_INTERFACE_INFO(0x1e2d, 0x0055, USB_CLASS_COMM,
961 USB_CDC_SUBCLASS_ETHERNET,
962 USB_CDC_PROTO_NONE),
963 .driver_info = (unsigned long)&wwan_info,
964}, {
965 USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
966 USB_CDC_PROTO_NONE),
967 .driver_info = (unsigned long) &cdc_info,
968}, {
969 USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
970 USB_CDC_PROTO_NONE),
971 .driver_info = (unsigned long)&wwan_info,
972
973}, {
974 /* Various Huawei modems with a network port like the UMG1831 */
975 USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_COMM,
976 USB_CDC_SUBCLASS_ETHERNET, 255),
977 .driver_info = (unsigned long)&wwan_info,
978},
979 { }, /* END */
980};
981MODULE_DEVICE_TABLE(usb, products);
982
983static struct usb_driver cdc_driver = {
984 .name = "cdc_ether",
985 .id_table = products,
986 .probe = usbnet_probe,
987 .disconnect = usbnet_disconnect,
988 .suspend = usbnet_suspend,
989 .resume = usbnet_resume,
990 .reset_resume = usbnet_resume,
991 .supports_autosuspend = 1,
992 .disable_hub_initiated_lpm = 1,
993};
994
995module_usb_driver(cdc_driver);
996
997MODULE_AUTHOR("David Brownell");
998MODULE_DESCRIPTION("USB CDC Ethernet devices");
999MODULE_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");