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/* We need to override usbnet_*_link_ksettings in bind() */
 96static const struct ethtool_ops cdc_ether_ethtool_ops = {
 97	.get_link		= usbnet_get_link,
 98	.nway_reset		= usbnet_nway_reset,
 99	.get_drvinfo		= usbnet_get_drvinfo,
100	.get_msglevel		= usbnet_get_msglevel,
101	.set_msglevel		= usbnet_set_msglevel,
102	.get_ts_info		= ethtool_op_get_ts_info,
103	.get_link_ksettings	= usbnet_get_link_ksettings_internal,
104	.set_link_ksettings	= NULL,
105};
106
107/* probes control interface, claims data interface, collects the bulk
108 * endpoints, activates data interface (if needed), maybe sets MTU.
109 * all pure cdc, except for certain firmware workarounds, and knowing
110 * that rndis uses one different rule.
111 */
112int usbnet_generic_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
113{
114	u8				*buf = intf->cur_altsetting->extra;
115	int				len = intf->cur_altsetting->extralen;
116	struct usb_interface_descriptor	*d;
117	struct cdc_state		*info = (void *) &dev->data;
118	int				status;
119	int				rndis;
120	bool				android_rndis_quirk = false;
121	struct usb_driver		*driver = driver_of(intf);
122	struct usb_cdc_parsed_header header;
123
124	if (sizeof(dev->data) < sizeof(*info))
125		return -EDOM;
126
127	/* expect strict spec conformance for the descriptors, but
128	 * cope with firmware which stores them in the wrong place
129	 */
130	if (len == 0 && dev->udev->actconfig->extralen) {
131		/* Motorola SB4100 (and others: Brad Hards says it's
132		 * from a Broadcom design) put CDC descriptors here
133		 */
134		buf = dev->udev->actconfig->extra;
135		len = dev->udev->actconfig->extralen;
136		dev_dbg(&intf->dev, "CDC descriptors on config\n");
137	}
138
139	/* Maybe CDC descriptors are after the endpoint?  This bug has
140	 * been seen on some 2Wire Inc RNDIS-ish products.
141	 */
142	if (len == 0) {
143		struct usb_host_endpoint	*hep;
144
145		hep = intf->cur_altsetting->endpoint;
146		if (hep) {
147			buf = hep->extra;
148			len = hep->extralen;
149		}
150		if (len)
151			dev_dbg(&intf->dev,
152				"CDC descriptors on endpoint\n");
153	}
154
155	/* this assumes that if there's a non-RNDIS vendor variant
156	 * of cdc-acm, it'll fail RNDIS requests cleanly.
157	 */
158	rndis = (is_rndis(&intf->cur_altsetting->desc) ||
159		 is_activesync(&intf->cur_altsetting->desc) ||
160		 is_wireless_rndis(&intf->cur_altsetting->desc) ||
161		 is_novatel_rndis(&intf->cur_altsetting->desc));
162
163	memset(info, 0, sizeof(*info));
164	info->control = intf;
165
166	cdc_parse_cdc_header(&header, intf, buf, len);
167
168	info->u = header.usb_cdc_union_desc;
169	info->header = header.usb_cdc_header_desc;
170	info->ether = header.usb_cdc_ether_desc;
171	if (!info->u) {
172		if (rndis)
173			goto skip;
174		else /* in that case a quirk is mandatory */
175			goto bad_desc;
176	}
177	/* we need a master/control interface (what we're
178	 * probed with) and a slave/data interface; union
179	 * descriptors sort this all out.
180	 */
181	info->control = usb_ifnum_to_if(dev->udev, info->u->bMasterInterface0);
182	info->data = usb_ifnum_to_if(dev->udev, info->u->bSlaveInterface0);
183	if (!info->control || !info->data) {
184		dev_dbg(&intf->dev,
185			"master #%u/%p slave #%u/%p\n",
186			info->u->bMasterInterface0,
187			info->control,
188			info->u->bSlaveInterface0,
189			info->data);
190		/* fall back to hard-wiring for RNDIS */
191		if (rndis) {
192			android_rndis_quirk = true;
193			goto skip;
194		}
195		goto bad_desc;
196	}
197	if (info->control != intf) {
198		dev_dbg(&intf->dev, "bogus CDC Union\n");
199		/* Ambit USB Cable Modem (and maybe others)
200		 * interchanges master and slave interface.
201		 */
202		if (info->data == intf) {
203			info->data = info->control;
204			info->control = intf;
205		} else
206			goto bad_desc;
207	}
208
209	/* some devices merge these - skip class check */
210	if (info->control == info->data)
211		goto skip;
212
213	/* a data interface altsetting does the real i/o */
214	d = &info->data->cur_altsetting->desc;
215	if (d->bInterfaceClass != USB_CLASS_CDC_DATA) {
216		dev_dbg(&intf->dev, "slave class %u\n", d->bInterfaceClass);
217		goto bad_desc;
218	}
219skip:
220	/* Communication class functions with bmCapabilities are not
221	 * RNDIS.  But some Wireless class RNDIS functions use
222	 * bmCapabilities for their own purpose. The failsafe is
223	 * therefore applied only to Communication class RNDIS
224	 * functions.  The rndis test is redundant, but a cheap
225	 * optimization.
226	 */
227	if (rndis && is_rndis(&intf->cur_altsetting->desc) &&
228	    header.usb_cdc_acm_descriptor &&
229	    header.usb_cdc_acm_descriptor->bmCapabilities) {
230		dev_dbg(&intf->dev,
231			"ACM capabilities %02x, not really RNDIS?\n",
232			header.usb_cdc_acm_descriptor->bmCapabilities);
233		goto bad_desc;
234	}
235
236	if (header.usb_cdc_ether_desc && info->ether->wMaxSegmentSize) {
237		dev->hard_mtu = le16_to_cpu(info->ether->wMaxSegmentSize);
238		/* because of Zaurus, we may be ignoring the host
239		 * side link address we were given.
240		 */
241	}
242
243	if (header.usb_cdc_mdlm_desc &&
244	    memcmp(header.usb_cdc_mdlm_desc->bGUID, mbm_guid, 16)) {
245		dev_dbg(&intf->dev, "GUID doesn't match\n");
246		goto bad_desc;
247	}
248
249	if (header.usb_cdc_mdlm_detail_desc &&
250		header.usb_cdc_mdlm_detail_desc->bLength <
251			(sizeof(struct usb_cdc_mdlm_detail_desc) + 1)) {
252		dev_dbg(&intf->dev, "Descriptor too short\n");
253		goto bad_desc;
254	}
255
256
257
258	/* Microsoft ActiveSync based and some regular RNDIS devices lack the
259	 * CDC descriptors, so we'll hard-wire the interfaces and not check
260	 * for descriptors.
261	 *
262	 * Some Android RNDIS devices have a CDC Union descriptor pointing
263	 * to non-existing interfaces.  Ignore that and attempt the same
264	 * hard-wired 0 and 1 interfaces.
265	 */
266	if (rndis && (!info->u || android_rndis_quirk)) {
267		info->control = usb_ifnum_to_if(dev->udev, 0);
268		info->data = usb_ifnum_to_if(dev->udev, 1);
269		if (!info->control || !info->data || info->control != intf) {
270			dev_dbg(&intf->dev,
271				"rndis: master #0/%p slave #1/%p\n",
272				info->control,
273				info->data);
274			goto bad_desc;
275		}
276
277	} else if (!info->header || (!rndis && !info->ether)) {
278		dev_dbg(&intf->dev, "missing cdc %s%s%sdescriptor\n",
279			info->header ? "" : "header ",
280			info->u ? "" : "union ",
281			info->ether ? "" : "ether ");
282		goto bad_desc;
283	}
284
285	/* claim data interface and set it up ... with side effects.
286	 * network traffic can't flow until an altsetting is enabled.
287	 */
288	if (info->data != info->control) {
289		status = usb_driver_claim_interface(driver, info->data, dev);
290		if (status < 0)
291			return status;
292	}
293	status = usbnet_get_endpoints(dev, info->data);
294	if (status < 0) {
295		/* ensure immediate exit from usbnet_disconnect */
296		usb_set_intfdata(info->data, NULL);
297		if (info->data != info->control)
298			usb_driver_release_interface(driver, info->data);
299		return status;
300	}
301
302	/* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */
303	if (info->data != info->control)
304		dev->status = NULL;
305	if (info->control->cur_altsetting->desc.bNumEndpoints == 1) {
306		struct usb_endpoint_descriptor	*desc;
307
308		dev->status = &info->control->cur_altsetting->endpoint[0];
309		desc = &dev->status->desc;
310		if (!usb_endpoint_is_int_in(desc) ||
311		    (le16_to_cpu(desc->wMaxPacketSize)
312		     < sizeof(struct usb_cdc_notification)) ||
313		    !desc->bInterval) {
314			dev_dbg(&intf->dev, "bad notification endpoint\n");
315			dev->status = NULL;
316		}
317	}
318	if (rndis && !dev->status) {
319		dev_dbg(&intf->dev, "missing RNDIS status endpoint\n");
320		usb_set_intfdata(info->data, NULL);
321		usb_driver_release_interface(driver, info->data);
322		return -ENODEV;
323	}
324
325	/* override ethtool_ops */
326	dev->net->ethtool_ops = &cdc_ether_ethtool_ops;
327
328	return 0;
329
330bad_desc:
331	dev_info(&dev->udev->dev, "bad CDC descriptors\n");
332	return -ENODEV;
333}
334EXPORT_SYMBOL_GPL(usbnet_generic_cdc_bind);
335
336
337/* like usbnet_generic_cdc_bind() but handles filter initialization
338 * correctly
339 */
340int usbnet_ether_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
341{
342	int rv;
343
344	rv = usbnet_generic_cdc_bind(dev, intf);
345	if (rv < 0)
346		goto bail_out;
347
348	/* Some devices don't initialise properly. In particular
349	 * the packet filter is not reset. There are devices that
350	 * don't do reset all the way. So the packet filter should
351	 * be set to a sane initial value.
352	 */
353	usbnet_cdc_update_filter(dev);
354
355bail_out:
356	return rv;
357}
358EXPORT_SYMBOL_GPL(usbnet_ether_cdc_bind);
359
360void usbnet_cdc_unbind(struct usbnet *dev, struct usb_interface *intf)
361{
362	struct cdc_state		*info = (void *) &dev->data;
363	struct usb_driver		*driver = driver_of(intf);
364
365	/* combined interface - nothing  to do */
366	if (info->data == info->control)
367		return;
368
369	/* disconnect master --> disconnect slave */
370	if (intf == info->control && info->data) {
371		/* ensure immediate exit from usbnet_disconnect */
372		usb_set_intfdata(info->data, NULL);
373		usb_driver_release_interface(driver, info->data);
374		info->data = NULL;
375	}
376
377	/* and vice versa (just in case) */
378	else if (intf == info->data && info->control) {
379		/* ensure immediate exit from usbnet_disconnect */
380		usb_set_intfdata(info->control, NULL);
381		usb_driver_release_interface(driver, info->control);
382		info->control = NULL;
383	}
384}
385EXPORT_SYMBOL_GPL(usbnet_cdc_unbind);
386
387/* Communications Device Class, Ethernet Control model
388 *
389 * Takes two interfaces.  The DATA interface is inactive till an altsetting
390 * is selected.  Configuration data includes class descriptors.  There's
391 * an optional status endpoint on the control interface.
392 *
393 * This should interop with whatever the 2.4 "CDCEther.c" driver
394 * (by Brad Hards) talked with, with more functionality.
395 */
396
397static void speed_change(struct usbnet *dev, __le32 *speeds)
398{
399	dev->tx_speed = __le32_to_cpu(speeds[0]);
400	dev->rx_speed = __le32_to_cpu(speeds[1]);
401}
402
403void usbnet_cdc_status(struct usbnet *dev, struct urb *urb)
404{
405	struct usb_cdc_notification	*event;
406
407	if (urb->actual_length < sizeof(*event))
408		return;
409
410	/* SPEED_CHANGE can get split into two 8-byte packets */
411	if (test_and_clear_bit(EVENT_STS_SPLIT, &dev->flags)) {
412		speed_change(dev, (__le32 *) urb->transfer_buffer);
413		return;
414	}
415
416	event = urb->transfer_buffer;
417	switch (event->bNotificationType) {
418	case USB_CDC_NOTIFY_NETWORK_CONNECTION:
419		netif_dbg(dev, timer, dev->net, "CDC: carrier %s\n",
420			  event->wValue ? "on" : "off");
421		usbnet_link_change(dev, !!event->wValue, 0);
422		break;
423	case USB_CDC_NOTIFY_SPEED_CHANGE:	/* tx/rx rates */
424		netif_dbg(dev, timer, dev->net, "CDC: speed change (len %d)\n",
425			  urb->actual_length);
426		if (urb->actual_length != (sizeof(*event) + 8))
427			set_bit(EVENT_STS_SPLIT, &dev->flags);
428		else
429			speed_change(dev, (__le32 *) &event[1]);
430		break;
431	/* USB_CDC_NOTIFY_RESPONSE_AVAILABLE can happen too (e.g. RNDIS),
432	 * but there are no standard formats for the response data.
433	 */
434	default:
435		netdev_err(dev->net, "CDC: unexpected notification %02x!\n",
436			   event->bNotificationType);
437		break;
438	}
439}
440EXPORT_SYMBOL_GPL(usbnet_cdc_status);
441
442int usbnet_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
443{
444	int				status;
445	struct cdc_state		*info = (void *) &dev->data;
446
447	BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data)
448			< sizeof(struct cdc_state)));
449
450	status = usbnet_ether_cdc_bind(dev, intf);
451	if (status < 0)
452		return status;
453
454	status = usbnet_get_ethernet_addr(dev, info->ether->iMACAddress);
455	if (status < 0) {
456		usb_set_intfdata(info->data, NULL);
457		usb_driver_release_interface(driver_of(intf), info->data);
458		return status;
459	}
460
461	return 0;
462}
463EXPORT_SYMBOL_GPL(usbnet_cdc_bind);
464
465static int usbnet_cdc_zte_bind(struct usbnet *dev, struct usb_interface *intf)
466{
467	int status = usbnet_cdc_bind(dev, intf);
468
469	if (!status && (dev->net->dev_addr[0] & 0x02))
470		eth_hw_addr_random(dev->net);
471
472	return status;
473}
474
475/* Make sure packets have correct destination MAC address
476 *
477 * A firmware bug observed on some devices (ZTE MF823/831/910) is that the
478 * device sends packets with a static, bogus, random MAC address (event if
479 * device MAC address has been updated). Always set MAC address to that of the
480 * device.
481 */
482int usbnet_cdc_zte_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
483{
484	if (skb->len < ETH_HLEN || !(skb->data[0] & 0x02))
485		return 1;
486
487	skb_reset_mac_header(skb);
488	ether_addr_copy(eth_hdr(skb)->h_dest, dev->net->dev_addr);
489
490	return 1;
491}
492EXPORT_SYMBOL_GPL(usbnet_cdc_zte_rx_fixup);
493
494/* Ensure correct link state
495 *
496 * Some devices (ZTE MF823/831/910) export two carrier on notifications when
497 * connected. This causes the link state to be incorrect. Work around this by
498 * always setting the state to off, then on.
499 */
500static void usbnet_cdc_zte_status(struct usbnet *dev, struct urb *urb)
501{
502	struct usb_cdc_notification *event;
503
504	if (urb->actual_length < sizeof(*event))
505		return;
506
507	event = urb->transfer_buffer;
508
509	if (event->bNotificationType != USB_CDC_NOTIFY_NETWORK_CONNECTION) {
510		usbnet_cdc_status(dev, urb);
511		return;
512	}
513
514	netif_dbg(dev, timer, dev->net, "CDC: carrier %s\n",
515		  event->wValue ? "on" : "off");
516
517	if (event->wValue &&
518	    netif_carrier_ok(dev->net))
519		netif_carrier_off(dev->net);
520
521	usbnet_link_change(dev, !!event->wValue, 0);
522}
523
524static const struct driver_info	cdc_info = {
525	.description =	"CDC Ethernet Device",
526	.flags =	FLAG_ETHER | FLAG_POINTTOPOINT,
527	.bind =		usbnet_cdc_bind,
528	.unbind =	usbnet_cdc_unbind,
529	.status =	usbnet_cdc_status,
530	.set_rx_mode =	usbnet_cdc_update_filter,
531	.manage_power =	usbnet_manage_power,
532};
533
534static const struct driver_info	zte_cdc_info = {
535	.description =	"ZTE CDC Ethernet Device",
536	.flags =	FLAG_ETHER | FLAG_POINTTOPOINT,
537	.bind =		usbnet_cdc_zte_bind,
538	.unbind =	usbnet_cdc_unbind,
539	.status =	usbnet_cdc_zte_status,
540	.set_rx_mode =	usbnet_cdc_update_filter,
541	.manage_power =	usbnet_manage_power,
542	.rx_fixup = usbnet_cdc_zte_rx_fixup,
543};
544
545static const struct driver_info wwan_info = {
546	.description =	"Mobile Broadband Network Device",
547	.flags =	FLAG_WWAN,
548	.bind =		usbnet_cdc_bind,
549	.unbind =	usbnet_cdc_unbind,
550	.status =	usbnet_cdc_status,
551	.set_rx_mode =	usbnet_cdc_update_filter,
552	.manage_power =	usbnet_manage_power,
553};
554
555/*-------------------------------------------------------------------------*/
556
557#define HUAWEI_VENDOR_ID	0x12D1
558#define NOVATEL_VENDOR_ID	0x1410
559#define ZTE_VENDOR_ID		0x19D2
560#define DELL_VENDOR_ID		0x413C
561#define REALTEK_VENDOR_ID	0x0bda
562#define SAMSUNG_VENDOR_ID	0x04e8
563#define LENOVO_VENDOR_ID	0x17ef
564#define LINKSYS_VENDOR_ID	0x13b1
565#define NVIDIA_VENDOR_ID	0x0955
566#define HP_VENDOR_ID		0x03f0
567#define MICROSOFT_VENDOR_ID	0x045e
568#define UBLOX_VENDOR_ID		0x1546
569#define TPLINK_VENDOR_ID	0x2357
570#define AQUANTIA_VENDOR_ID	0x2eca
571#define ASIX_VENDOR_ID		0x0b95
572
573static const struct usb_device_id	products[] = {
574/* BLACKLIST !!
575 *
576 * First blacklist any products that are egregiously nonconformant
577 * with the CDC Ethernet specs.  Minor braindamage we cope with; when
578 * they're not even trying, needing a separate driver is only the first
579 * of the differences to show up.
580 */
581
582#define	ZAURUS_MASTER_INTERFACE \
583	.bInterfaceClass	= USB_CLASS_COMM, \
584	.bInterfaceSubClass	= USB_CDC_SUBCLASS_ETHERNET, \
585	.bInterfaceProtocol	= USB_CDC_PROTO_NONE
586
587#define ZAURUS_FAKE_INTERFACE \
588	.bInterfaceClass	= USB_CLASS_COMM, \
589	.bInterfaceSubClass	= USB_CDC_SUBCLASS_MDLM, \
590	.bInterfaceProtocol	= USB_CDC_PROTO_NONE
591
592/* SA-1100 based Sharp Zaurus ("collie"), or compatible;
593 * wire-incompatible with true CDC Ethernet implementations.
594 * (And, it seems, needlessly so...)
595 */
596{
597	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
598			  | USB_DEVICE_ID_MATCH_DEVICE,
599	.idVendor		= 0x04DD,
600	.idProduct		= 0x8004,
601	ZAURUS_MASTER_INTERFACE,
602	.driver_info		= 0,
603},
604
605/* PXA-25x based Sharp Zaurii.  Note that it seems some of these
606 * (later models especially) may have shipped only with firmware
607 * advertising false "CDC MDLM" compatibility ... but we're not
608 * clear which models did that, so for now let's assume the worst.
609 */
610{
611	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
612			  | USB_DEVICE_ID_MATCH_DEVICE,
613	.idVendor		= 0x04DD,
614	.idProduct		= 0x8005,	/* A-300 */
615	ZAURUS_MASTER_INTERFACE,
616	.driver_info		= 0,
617}, {
618	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
619			  | USB_DEVICE_ID_MATCH_DEVICE,
620	.idVendor		= 0x04DD,
621	.idProduct		= 0x8005,   /* A-300 */
622	ZAURUS_FAKE_INTERFACE,
623	.driver_info        = 0,
624}, {
625	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
626			  | USB_DEVICE_ID_MATCH_DEVICE,
627	.idVendor		= 0x04DD,
628	.idProduct		= 0x8006,	/* B-500/SL-5600 */
629	ZAURUS_MASTER_INTERFACE,
630	.driver_info		= 0,
631}, {
632	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
633			  | USB_DEVICE_ID_MATCH_DEVICE,
634	.idVendor		= 0x04DD,
635	.idProduct		= 0x8006,   /* B-500/SL-5600 */
636	ZAURUS_FAKE_INTERFACE,
637	.driver_info        = 0,
638}, {
639	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
640			  | USB_DEVICE_ID_MATCH_DEVICE,
641	.idVendor		= 0x04DD,
642	.idProduct		= 0x8007,	/* C-700 */
643	ZAURUS_MASTER_INTERFACE,
644	.driver_info		= 0,
645}, {
646	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
647			  | USB_DEVICE_ID_MATCH_DEVICE,
648	.idVendor		= 0x04DD,
649	.idProduct		= 0x8007,   /* C-700 */
650	ZAURUS_FAKE_INTERFACE,
651	.driver_info        = 0,
652}, {
653	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
654		 | USB_DEVICE_ID_MATCH_DEVICE,
655	.idVendor               = 0x04DD,
656	.idProduct              = 0x9031,	/* C-750 C-760 */
657	ZAURUS_MASTER_INTERFACE,
658	.driver_info		= 0,
659}, {
660	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
661		 | USB_DEVICE_ID_MATCH_DEVICE,
662	.idVendor               = 0x04DD,
663	.idProduct              = 0x9032,	/* SL-6000 */
664	ZAURUS_MASTER_INTERFACE,
665	.driver_info		= 0,
666}, {
667	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
668		 | USB_DEVICE_ID_MATCH_DEVICE,
669	.idVendor               = 0x04DD,
670	.idProduct              = 0x9032,	/* SL-6000 */
671	ZAURUS_FAKE_INTERFACE,
672	.driver_info		= 0,
673}, {
674	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
675		 | USB_DEVICE_ID_MATCH_DEVICE,
676	.idVendor               = 0x04DD,
677	/* reported with some C860 units */
678	.idProduct              = 0x9050,	/* C-860 */
679	ZAURUS_MASTER_INTERFACE,
680	.driver_info		= 0,
681},
682
683/* Olympus has some models with a Zaurus-compatible option.
684 * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
685 */
686{
687	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
688		 | USB_DEVICE_ID_MATCH_DEVICE,
689	.idVendor               = 0x07B4,
690	.idProduct              = 0x0F02,	/* R-1000 */
691	ZAURUS_MASTER_INTERFACE,
692	.driver_info		= 0,
693},
694
695/* LG Electronics VL600 wants additional headers on every frame */
696{
697	USB_DEVICE_AND_INTERFACE_INFO(0x1004, 0x61aa, USB_CLASS_COMM,
698			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
699	.driver_info = 0,
700},
701
702/* Logitech Harmony 900 - uses the pseudo-MDLM (BLAN) driver */
703{
704	USB_DEVICE_AND_INTERFACE_INFO(0x046d, 0xc11f, USB_CLASS_COMM,
705			USB_CDC_SUBCLASS_MDLM, USB_CDC_PROTO_NONE),
706	.driver_info		= 0,
707},
708
709/* Novatel USB551L and MC551 - handled by qmi_wwan */
710{
711	USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0xB001, USB_CLASS_COMM,
712			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
713	.driver_info = 0,
714},
715
716/* Novatel E362 - handled by qmi_wwan */
717{
718	USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9010, USB_CLASS_COMM,
719			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
720	.driver_info = 0,
721},
722
723/* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
724{
725	USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8195, USB_CLASS_COMM,
726			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
727	.driver_info = 0,
728},
729
730/* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
731{
732	USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8196, USB_CLASS_COMM,
733			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
734	.driver_info = 0,
735},
736
737/* Dell Wireless 5804 (Novatel E371) - handled by qmi_wwan */
738{
739	USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x819b, USB_CLASS_COMM,
740			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
741	.driver_info = 0,
742},
743
744/* Novatel Expedite E371 - handled by qmi_wwan */
745{
746	USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9011, USB_CLASS_COMM,
747			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
748	.driver_info = 0,
749},
750
751/* HP lt2523 (Novatel E371) - handled by qmi_wwan */
752{
753	USB_DEVICE_AND_INTERFACE_INFO(HP_VENDOR_ID, 0x421d, USB_CLASS_COMM,
754				      USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
755	.driver_info = 0,
756},
757
758/* AnyDATA ADU960S - handled by qmi_wwan */
759{
760	USB_DEVICE_AND_INTERFACE_INFO(0x16d5, 0x650a, USB_CLASS_COMM,
761			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
762	.driver_info = 0,
763},
764
765/* Huawei E1820 - handled by qmi_wwan */
766{
767	USB_DEVICE_INTERFACE_NUMBER(HUAWEI_VENDOR_ID, 0x14ac, 1),
768	.driver_info = 0,
769},
770
 
 
 
 
 
 
 
771/* Realtek RTL8153 Based USB 3.0 Ethernet Adapters */
772{
773	USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8153, USB_CLASS_COMM,
774			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
775	.driver_info = 0,
776},
777
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
778/* Lenovo Powered USB-C Travel Hub (4X90S92381, based on Realtek RTL8153) */
779{
780	USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x721e, USB_CLASS_COMM,
781			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
782	.driver_info = 0,
783},
784
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
785/* Aquantia AQtion USB to 5GbE Controller (based on AQC111U) */
786{
787	USB_DEVICE_AND_INTERFACE_INFO(AQUANTIA_VENDOR_ID, 0xc101,
788				      USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
789				      USB_CDC_PROTO_NONE),
790	.driver_info = 0,
791},
792
793/* ASIX USB 3.1 Gen1 to 5G Multi-Gigabit Ethernet Adapter(based on AQC111U) */
794{
795	USB_DEVICE_AND_INTERFACE_INFO(ASIX_VENDOR_ID, 0x2790, USB_CLASS_COMM,
796				      USB_CDC_SUBCLASS_ETHERNET,
797				      USB_CDC_PROTO_NONE),
798	.driver_info = 0,
799},
800
801/* ASIX USB 3.1 Gen1 to 2.5G Multi-Gigabit Ethernet Adapter(based on AQC112U) */
802{
803	USB_DEVICE_AND_INTERFACE_INFO(ASIX_VENDOR_ID, 0x2791, USB_CLASS_COMM,
804				      USB_CDC_SUBCLASS_ETHERNET,
805				      USB_CDC_PROTO_NONE),
806	.driver_info = 0,
807},
808
809/* USB-C 3.1 to 5GBASE-T Ethernet Adapter (based on AQC111U) */
810{
811	USB_DEVICE_AND_INTERFACE_INFO(0x20f4, 0xe05a, USB_CLASS_COMM,
812				      USB_CDC_SUBCLASS_ETHERNET,
813				      USB_CDC_PROTO_NONE),
814	.driver_info = 0,
815},
816
817/* QNAP QNA-UC5G1T USB to 5GbE Adapter (based on AQC111U) */
818{
819	USB_DEVICE_AND_INTERFACE_INFO(0x1c04, 0x0015, USB_CLASS_COMM,
820				      USB_CDC_SUBCLASS_ETHERNET,
821				      USB_CDC_PROTO_NONE),
822	.driver_info = 0,
823},
824
825/* WHITELIST!!!
826 *
827 * CDC Ether uses two interfaces, not necessarily consecutive.
828 * We match the main interface, ignoring the optional device
829 * class so we could handle devices that aren't exclusively
830 * CDC ether.
831 *
832 * NOTE:  this match must come AFTER entries blacklisting devices
833 * because of bugs/quirks in a given product (like Zaurus, above).
834 */
835{
836	/* ZTE (Vodafone) K3805-Z */
837	USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1003, USB_CLASS_COMM,
838				      USB_CDC_SUBCLASS_ETHERNET,
839				      USB_CDC_PROTO_NONE),
840	.driver_info = (unsigned long)&wwan_info,
841}, {
842	/* ZTE (Vodafone) K3806-Z */
843	USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1015, USB_CLASS_COMM,
844				      USB_CDC_SUBCLASS_ETHERNET,
845				      USB_CDC_PROTO_NONE),
846	.driver_info = (unsigned long)&wwan_info,
847}, {
848	/* ZTE (Vodafone) K4510-Z */
849	USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1173, USB_CLASS_COMM,
850				      USB_CDC_SUBCLASS_ETHERNET,
851				      USB_CDC_PROTO_NONE),
852	.driver_info = (unsigned long)&wwan_info,
853}, {
854	/* ZTE (Vodafone) K3770-Z */
855	USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1177, USB_CLASS_COMM,
856				      USB_CDC_SUBCLASS_ETHERNET,
857				      USB_CDC_PROTO_NONE),
858	.driver_info = (unsigned long)&wwan_info,
859}, {
860	/* ZTE (Vodafone) K3772-Z */
861	USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1181, USB_CLASS_COMM,
862				      USB_CDC_SUBCLASS_ETHERNET,
863				      USB_CDC_PROTO_NONE),
864	.driver_info = (unsigned long)&wwan_info,
865}, {
866	/* Telit modules */
867	USB_VENDOR_AND_INTERFACE_INFO(0x1bc7, USB_CLASS_COMM,
868			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
869	.driver_info = (kernel_ulong_t) &wwan_info,
870}, {
871	/* Dell DW5580 modules */
872	USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x81ba, USB_CLASS_COMM,
873			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
874	.driver_info = (kernel_ulong_t)&wwan_info,
875}, {
876	/* Huawei ME906 and ME909 */
877	USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x15c1, USB_CLASS_COMM,
878				      USB_CDC_SUBCLASS_ETHERNET,
879				      USB_CDC_PROTO_NONE),
880	.driver_info = (unsigned long)&wwan_info,
881}, {
882	/* ZTE modules */
883	USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, USB_CLASS_COMM,
884				      USB_CDC_SUBCLASS_ETHERNET,
885				      USB_CDC_PROTO_NONE),
886	.driver_info = (unsigned long)&zte_cdc_info,
887}, {
888	/* U-blox TOBY-L2 */
889	USB_DEVICE_AND_INTERFACE_INFO(UBLOX_VENDOR_ID, 0x1143, USB_CLASS_COMM,
890				      USB_CDC_SUBCLASS_ETHERNET,
891				      USB_CDC_PROTO_NONE),
892	.driver_info = (unsigned long)&wwan_info,
893}, {
894	/* U-blox SARA-U2 */
895	USB_DEVICE_AND_INTERFACE_INFO(UBLOX_VENDOR_ID, 0x1104, USB_CLASS_COMM,
896				      USB_CDC_SUBCLASS_ETHERNET,
897				      USB_CDC_PROTO_NONE),
898	.driver_info = (unsigned long)&wwan_info,
899}, {
900	/* U-blox LARA-R6 01B */
901	USB_DEVICE_AND_INTERFACE_INFO(UBLOX_VENDOR_ID, 0x1313, USB_CLASS_COMM,
902				      USB_CDC_SUBCLASS_ETHERNET,
903				      USB_CDC_PROTO_NONE),
904	.driver_info = (unsigned long)&wwan_info,
905}, {
906	/* U-blox LARA-L6 */
907	USB_DEVICE_AND_INTERFACE_INFO(UBLOX_VENDOR_ID, 0x1343, USB_CLASS_COMM,
908				      USB_CDC_SUBCLASS_ETHERNET,
909				      USB_CDC_PROTO_NONE),
910	.driver_info = (unsigned long)&wwan_info,
911}, {
912	/* Cinterion PLS8 modem by GEMALTO */
913	USB_DEVICE_AND_INTERFACE_INFO(0x1e2d, 0x0061, USB_CLASS_COMM,
914				      USB_CDC_SUBCLASS_ETHERNET,
915				      USB_CDC_PROTO_NONE),
916	.driver_info = (unsigned long)&wwan_info,
917}, {
918	/* Cinterion AHS3 modem by GEMALTO */
919	USB_DEVICE_AND_INTERFACE_INFO(0x1e2d, 0x0055, USB_CLASS_COMM,
920				      USB_CDC_SUBCLASS_ETHERNET,
921				      USB_CDC_PROTO_NONE),
922	.driver_info = (unsigned long)&wwan_info,
923}, {
924	/* Cinterion PLS62-W modem by GEMALTO/THALES */
925	USB_DEVICE_AND_INTERFACE_INFO(0x1e2d, 0x005b, USB_CLASS_COMM,
926				      USB_CDC_SUBCLASS_ETHERNET,
927				      USB_CDC_PROTO_NONE),
928	.driver_info = (unsigned long)&wwan_info,
929}, {
930	/* Cinterion PLS83/PLS63 modem by GEMALTO/THALES */
931	USB_DEVICE_AND_INTERFACE_INFO(0x1e2d, 0x0069, USB_CLASS_COMM,
932				      USB_CDC_SUBCLASS_ETHERNET,
933				      USB_CDC_PROTO_NONE),
934	.driver_info = (unsigned long)&wwan_info,
935}, {
936	USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
937			USB_CDC_PROTO_NONE),
938	.driver_info = (unsigned long) &cdc_info,
939}, {
940	USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
941			USB_CDC_PROTO_NONE),
942	.driver_info = (unsigned long)&wwan_info,
943
944}, {
945	/* Various Huawei modems with a network port like the UMG1831 */
946	USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_COMM,
947				      USB_CDC_SUBCLASS_ETHERNET, 255),
948	.driver_info = (unsigned long)&wwan_info,
949},
950	{ },		/* END */
951};
952MODULE_DEVICE_TABLE(usb, products);
953
954static struct usb_driver cdc_driver = {
955	.name =		"cdc_ether",
956	.id_table =	products,
957	.probe =	usbnet_probe,
958	.disconnect =	usbnet_disconnect,
959	.suspend =	usbnet_suspend,
960	.resume =	usbnet_resume,
961	.reset_resume =	usbnet_resume,
962	.supports_autosuspend = 1,
963	.disable_hub_initiated_lpm = 1,
964};
965
966module_usb_driver(cdc_driver);
967
968MODULE_AUTHOR("David Brownell");
969MODULE_DESCRIPTION("USB CDC Ethernet devices");
970MODULE_LICENSE("GPL");