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v6.13.7
  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		if (netif_carrier_ok(dev->net) != !!event->wValue)
422			usbnet_link_change(dev, !!event->wValue, 0);
423		break;
424	case USB_CDC_NOTIFY_SPEED_CHANGE:	/* tx/rx rates */
425		netif_dbg(dev, timer, dev->net, "CDC: speed change (len %d)\n",
426			  urb->actual_length);
427		if (urb->actual_length != (sizeof(*event) + 8))
428			set_bit(EVENT_STS_SPLIT, &dev->flags);
429		else
430			speed_change(dev, (__le32 *) &event[1]);
431		break;
432	/* USB_CDC_NOTIFY_RESPONSE_AVAILABLE can happen too (e.g. RNDIS),
433	 * but there are no standard formats for the response data.
434	 */
435	default:
436		netdev_err(dev->net, "CDC: unexpected notification %02x!\n",
437			   event->bNotificationType);
438		break;
439	}
440}
441EXPORT_SYMBOL_GPL(usbnet_cdc_status);
442
443int usbnet_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
444{
445	int				status;
446	struct cdc_state		*info = (void *) &dev->data;
447
448	BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data)
449			< sizeof(struct cdc_state)));
450
451	status = usbnet_ether_cdc_bind(dev, intf);
452	if (status < 0)
453		return status;
454
455	status = usbnet_get_ethernet_addr(dev, info->ether->iMACAddress);
456	if (status < 0) {
457		usb_set_intfdata(info->data, NULL);
458		usb_driver_release_interface(driver_of(intf), info->data);
459		return status;
460	}
461
462	return 0;
463}
464EXPORT_SYMBOL_GPL(usbnet_cdc_bind);
465
466static int usbnet_cdc_zte_bind(struct usbnet *dev, struct usb_interface *intf)
467{
468	int status = usbnet_cdc_bind(dev, intf);
469
470	if (!status && (dev->net->dev_addr[0] & 0x02))
471		eth_hw_addr_random(dev->net);
472
473	return status;
474}
475
476/* Make sure packets have correct destination MAC address
477 *
478 * A firmware bug observed on some devices (ZTE MF823/831/910) is that the
479 * device sends packets with a static, bogus, random MAC address (event if
480 * device MAC address has been updated). Always set MAC address to that of the
481 * device.
482 */
483int usbnet_cdc_zte_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
484{
485	if (skb->len < ETH_HLEN || !(skb->data[0] & 0x02))
486		return 1;
487
488	skb_reset_mac_header(skb);
489	ether_addr_copy(eth_hdr(skb)->h_dest, dev->net->dev_addr);
490
491	return 1;
492}
493EXPORT_SYMBOL_GPL(usbnet_cdc_zte_rx_fixup);
494
495/* Ensure correct link state
496 *
497 * Some devices (ZTE MF823/831/910) export two carrier on notifications when
498 * connected. This causes the link state to be incorrect. Work around this by
499 * always setting the state to off, then on.
500 */
501static void usbnet_cdc_zte_status(struct usbnet *dev, struct urb *urb)
502{
503	struct usb_cdc_notification *event;
504
505	if (urb->actual_length < sizeof(*event))
506		return;
507
508	event = urb->transfer_buffer;
509
510	if (event->bNotificationType != USB_CDC_NOTIFY_NETWORK_CONNECTION) {
511		usbnet_cdc_status(dev, urb);
512		return;
513	}
514
515	netif_dbg(dev, timer, dev->net, "CDC: carrier %s\n",
516		  event->wValue ? "on" : "off");
517
518	if (event->wValue &&
519	    netif_carrier_ok(dev->net))
520		netif_carrier_off(dev->net);
521
522	usbnet_link_change(dev, !!event->wValue, 0);
523}
524
525static const struct driver_info	cdc_info = {
526	.description =	"CDC Ethernet Device",
527	.flags =	FLAG_ETHER | FLAG_POINTTOPOINT,
528	.bind =		usbnet_cdc_bind,
529	.unbind =	usbnet_cdc_unbind,
530	.status =	usbnet_cdc_status,
531	.set_rx_mode =	usbnet_cdc_update_filter,
532	.manage_power =	usbnet_manage_power,
533};
534
535static const struct driver_info	zte_cdc_info = {
536	.description =	"ZTE CDC Ethernet Device",
537	.flags =	FLAG_ETHER | FLAG_POINTTOPOINT,
538	.bind =		usbnet_cdc_zte_bind,
539	.unbind =	usbnet_cdc_unbind,
540	.status =	usbnet_cdc_zte_status,
541	.set_rx_mode =	usbnet_cdc_update_filter,
542	.manage_power =	usbnet_manage_power,
543	.rx_fixup = usbnet_cdc_zte_rx_fixup,
544};
545
546static const struct driver_info wwan_info = {
547	.description =	"Mobile Broadband Network Device",
548	.flags =	FLAG_WWAN,
549	.bind =		usbnet_cdc_bind,
550	.unbind =	usbnet_cdc_unbind,
551	.status =	usbnet_cdc_status,
552	.set_rx_mode =	usbnet_cdc_update_filter,
553	.manage_power =	usbnet_manage_power,
554};
555
556/*-------------------------------------------------------------------------*/
557
558#define HUAWEI_VENDOR_ID	0x12D1
559#define NOVATEL_VENDOR_ID	0x1410
560#define ZTE_VENDOR_ID		0x19D2
561#define DELL_VENDOR_ID		0x413C
562#define REALTEK_VENDOR_ID	0x0bda
563#define SAMSUNG_VENDOR_ID	0x04e8
564#define LENOVO_VENDOR_ID	0x17ef
565#define LINKSYS_VENDOR_ID	0x13b1
566#define NVIDIA_VENDOR_ID	0x0955
567#define HP_VENDOR_ID		0x03f0
568#define MICROSOFT_VENDOR_ID	0x045e
569#define UBLOX_VENDOR_ID		0x1546
570#define TPLINK_VENDOR_ID	0x2357
571#define AQUANTIA_VENDOR_ID	0x2eca
572#define ASIX_VENDOR_ID		0x0b95
573
574static const struct usb_device_id	products[] = {
575/* BLACKLIST !!
576 *
577 * First blacklist any products that are egregiously nonconformant
578 * with the CDC Ethernet specs.  Minor braindamage we cope with; when
579 * they're not even trying, needing a separate driver is only the first
580 * of the differences to show up.
581 */
582
583#define	ZAURUS_MASTER_INTERFACE \
584	.bInterfaceClass	= USB_CLASS_COMM, \
585	.bInterfaceSubClass	= USB_CDC_SUBCLASS_ETHERNET, \
586	.bInterfaceProtocol	= USB_CDC_PROTO_NONE
587
588#define ZAURUS_FAKE_INTERFACE \
589	.bInterfaceClass	= USB_CLASS_COMM, \
590	.bInterfaceSubClass	= USB_CDC_SUBCLASS_MDLM, \
591	.bInterfaceProtocol	= USB_CDC_PROTO_NONE
592
593/* SA-1100 based Sharp Zaurus ("collie"), or compatible;
594 * wire-incompatible with true CDC Ethernet implementations.
595 * (And, it seems, needlessly so...)
596 */
597{
598	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
599			  | USB_DEVICE_ID_MATCH_DEVICE,
600	.idVendor		= 0x04DD,
601	.idProduct		= 0x8004,
602	ZAURUS_MASTER_INTERFACE,
603	.driver_info		= 0,
604},
605
606/* PXA-25x based Sharp Zaurii.  Note that it seems some of these
607 * (later models especially) may have shipped only with firmware
608 * advertising false "CDC MDLM" compatibility ... but we're not
609 * clear which models did that, so for now let's assume the worst.
610 */
611{
612	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
613			  | USB_DEVICE_ID_MATCH_DEVICE,
614	.idVendor		= 0x04DD,
615	.idProduct		= 0x8005,	/* A-300 */
616	ZAURUS_MASTER_INTERFACE,
617	.driver_info		= 0,
618}, {
619	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
620			  | USB_DEVICE_ID_MATCH_DEVICE,
621	.idVendor		= 0x04DD,
622	.idProduct		= 0x8005,   /* A-300 */
623	ZAURUS_FAKE_INTERFACE,
624	.driver_info        = 0,
625}, {
626	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
627			  | USB_DEVICE_ID_MATCH_DEVICE,
628	.idVendor		= 0x04DD,
629	.idProduct		= 0x8006,	/* B-500/SL-5600 */
630	ZAURUS_MASTER_INTERFACE,
631	.driver_info		= 0,
632}, {
633	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
634			  | USB_DEVICE_ID_MATCH_DEVICE,
635	.idVendor		= 0x04DD,
636	.idProduct		= 0x8006,   /* B-500/SL-5600 */
637	ZAURUS_FAKE_INTERFACE,
638	.driver_info        = 0,
639}, {
640	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
641			  | USB_DEVICE_ID_MATCH_DEVICE,
642	.idVendor		= 0x04DD,
643	.idProduct		= 0x8007,	/* C-700 */
644	ZAURUS_MASTER_INTERFACE,
645	.driver_info		= 0,
646}, {
647	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
648			  | USB_DEVICE_ID_MATCH_DEVICE,
649	.idVendor		= 0x04DD,
650	.idProduct		= 0x8007,   /* C-700 */
651	ZAURUS_FAKE_INTERFACE,
652	.driver_info        = 0,
653}, {
654	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
655		 | USB_DEVICE_ID_MATCH_DEVICE,
656	.idVendor               = 0x04DD,
657	.idProduct              = 0x9031,	/* C-750 C-760 */
658	ZAURUS_MASTER_INTERFACE,
659	.driver_info		= 0,
660}, {
661	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
662		 | USB_DEVICE_ID_MATCH_DEVICE,
663	.idVendor               = 0x04DD,
664	.idProduct              = 0x9032,	/* SL-6000 */
665	ZAURUS_MASTER_INTERFACE,
666	.driver_info		= 0,
667}, {
668	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
669		 | USB_DEVICE_ID_MATCH_DEVICE,
670	.idVendor               = 0x04DD,
671	.idProduct              = 0x9032,	/* SL-6000 */
672	ZAURUS_FAKE_INTERFACE,
673	.driver_info		= 0,
674}, {
675	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
676		 | USB_DEVICE_ID_MATCH_DEVICE,
677	.idVendor               = 0x04DD,
678	/* reported with some C860 units */
679	.idProduct              = 0x9050,	/* C-860 */
680	ZAURUS_MASTER_INTERFACE,
681	.driver_info		= 0,
682},
683
684/* Olympus has some models with a Zaurus-compatible option.
685 * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
686 */
687{
688	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
689		 | USB_DEVICE_ID_MATCH_DEVICE,
690	.idVendor               = 0x07B4,
691	.idProduct              = 0x0F02,	/* R-1000 */
692	ZAURUS_MASTER_INTERFACE,
693	.driver_info		= 0,
694},
695
696/* LG Electronics VL600 wants additional headers on every frame */
697{
698	USB_DEVICE_AND_INTERFACE_INFO(0x1004, 0x61aa, USB_CLASS_COMM,
699			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
700	.driver_info = 0,
701},
702
703/* Logitech Harmony 900 - uses the pseudo-MDLM (BLAN) driver */
704{
705	USB_DEVICE_AND_INTERFACE_INFO(0x046d, 0xc11f, USB_CLASS_COMM,
706			USB_CDC_SUBCLASS_MDLM, USB_CDC_PROTO_NONE),
707	.driver_info		= 0,
708},
709
710/* Novatel USB551L and MC551 - handled by qmi_wwan */
711{
712	USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0xB001, USB_CLASS_COMM,
713			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
714	.driver_info = 0,
715},
716
717/* Novatel E362 - handled by qmi_wwan */
718{
719	USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9010, USB_CLASS_COMM,
720			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
721	.driver_info = 0,
722},
723
724/* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
725{
726	USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8195, USB_CLASS_COMM,
727			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
728	.driver_info = 0,
729},
730
731/* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
732{
733	USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8196, USB_CLASS_COMM,
734			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
735	.driver_info = 0,
736},
737
738/* Dell Wireless 5804 (Novatel E371) - handled by qmi_wwan */
739{
740	USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x819b, USB_CLASS_COMM,
741			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
742	.driver_info = 0,
743},
744
745/* Novatel Expedite E371 - handled by qmi_wwan */
746{
747	USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9011, USB_CLASS_COMM,
748			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
749	.driver_info = 0,
750},
751
752/* HP lt2523 (Novatel E371) - handled by qmi_wwan */
753{
754	USB_DEVICE_AND_INTERFACE_INFO(HP_VENDOR_ID, 0x421d, USB_CLASS_COMM,
755				      USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
756	.driver_info = 0,
757},
758
759/* AnyDATA ADU960S - handled by qmi_wwan */
760{
761	USB_DEVICE_AND_INTERFACE_INFO(0x16d5, 0x650a, USB_CLASS_COMM,
762			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
763	.driver_info = 0,
764},
765
766/* Huawei E1820 - handled by qmi_wwan */
767{
768	USB_DEVICE_INTERFACE_NUMBER(HUAWEI_VENDOR_ID, 0x14ac, 1),
769	.driver_info = 0,
770},
771
 
 
 
 
 
 
 
772/* Realtek RTL8153 Based USB 3.0 Ethernet Adapters */
773{
774	USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8153, USB_CLASS_COMM,
775			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
776	.driver_info = 0,
777},
778
779/* Lenovo Powered USB-C Travel Hub (4X90S92381, based on Realtek RTL8153) */
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
780{
781	USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x721e, USB_CLASS_COMM,
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
782			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
783	.driver_info = 0,
784},
785
786/* Aquantia AQtion USB to 5GbE Controller (based on AQC111U) */
787{
788	USB_DEVICE_AND_INTERFACE_INFO(AQUANTIA_VENDOR_ID, 0xc101,
789				      USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
790				      USB_CDC_PROTO_NONE),
791	.driver_info = 0,
792},
793
794/* ASIX USB 3.1 Gen1 to 5G Multi-Gigabit Ethernet Adapter(based on AQC111U) */
795{
796	USB_DEVICE_AND_INTERFACE_INFO(ASIX_VENDOR_ID, 0x2790, USB_CLASS_COMM,
797				      USB_CDC_SUBCLASS_ETHERNET,
798				      USB_CDC_PROTO_NONE),
799	.driver_info = 0,
800},
801
802/* ASIX USB 3.1 Gen1 to 2.5G Multi-Gigabit Ethernet Adapter(based on AQC112U) */
803{
804	USB_DEVICE_AND_INTERFACE_INFO(ASIX_VENDOR_ID, 0x2791, USB_CLASS_COMM,
805				      USB_CDC_SUBCLASS_ETHERNET,
806				      USB_CDC_PROTO_NONE),
807	.driver_info = 0,
808},
809
810/* USB-C 3.1 to 5GBASE-T Ethernet Adapter (based on AQC111U) */
811{
812	USB_DEVICE_AND_INTERFACE_INFO(0x20f4, 0xe05a, USB_CLASS_COMM,
813				      USB_CDC_SUBCLASS_ETHERNET,
814				      USB_CDC_PROTO_NONE),
815	.driver_info = 0,
816},
817
818/* QNAP QNA-UC5G1T USB to 5GbE Adapter (based on AQC111U) */
819{
820	USB_DEVICE_AND_INTERFACE_INFO(0x1c04, 0x0015, USB_CLASS_COMM,
821				      USB_CDC_SUBCLASS_ETHERNET,
822				      USB_CDC_PROTO_NONE),
823	.driver_info = 0,
824},
825
826/* WHITELIST!!!
827 *
828 * CDC Ether uses two interfaces, not necessarily consecutive.
829 * We match the main interface, ignoring the optional device
830 * class so we could handle devices that aren't exclusively
831 * CDC ether.
832 *
833 * NOTE:  this match must come AFTER entries blacklisting devices
834 * because of bugs/quirks in a given product (like Zaurus, above).
835 */
836{
837	/* ZTE (Vodafone) K3805-Z */
838	USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1003, USB_CLASS_COMM,
839				      USB_CDC_SUBCLASS_ETHERNET,
840				      USB_CDC_PROTO_NONE),
841	.driver_info = (unsigned long)&wwan_info,
842}, {
843	/* ZTE (Vodafone) K3806-Z */
844	USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1015, USB_CLASS_COMM,
845				      USB_CDC_SUBCLASS_ETHERNET,
846				      USB_CDC_PROTO_NONE),
847	.driver_info = (unsigned long)&wwan_info,
848}, {
849	/* ZTE (Vodafone) K4510-Z */
850	USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1173, USB_CLASS_COMM,
851				      USB_CDC_SUBCLASS_ETHERNET,
852				      USB_CDC_PROTO_NONE),
853	.driver_info = (unsigned long)&wwan_info,
854}, {
855	/* ZTE (Vodafone) K3770-Z */
856	USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1177, USB_CLASS_COMM,
857				      USB_CDC_SUBCLASS_ETHERNET,
858				      USB_CDC_PROTO_NONE),
859	.driver_info = (unsigned long)&wwan_info,
860}, {
861	/* ZTE (Vodafone) K3772-Z */
862	USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1181, USB_CLASS_COMM,
863				      USB_CDC_SUBCLASS_ETHERNET,
864				      USB_CDC_PROTO_NONE),
865	.driver_info = (unsigned long)&wwan_info,
866}, {
867	/* Telit modules */
868	USB_VENDOR_AND_INTERFACE_INFO(0x1bc7, USB_CLASS_COMM,
869			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
870	.driver_info = (kernel_ulong_t) &wwan_info,
871}, {
872	/* Dell DW5580 modules */
873	USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x81ba, USB_CLASS_COMM,
874			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
875	.driver_info = (kernel_ulong_t)&wwan_info,
876}, {
877	/* Huawei ME906 and ME909 */
878	USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x15c1, USB_CLASS_COMM,
879				      USB_CDC_SUBCLASS_ETHERNET,
880				      USB_CDC_PROTO_NONE),
881	.driver_info = (unsigned long)&wwan_info,
882}, {
883	/* ZTE modules */
884	USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, USB_CLASS_COMM,
885				      USB_CDC_SUBCLASS_ETHERNET,
886				      USB_CDC_PROTO_NONE),
887	.driver_info = (unsigned long)&zte_cdc_info,
888}, {
889	/* U-blox TOBY-L2 */
890	USB_DEVICE_AND_INTERFACE_INFO(UBLOX_VENDOR_ID, 0x1143, USB_CLASS_COMM,
891				      USB_CDC_SUBCLASS_ETHERNET,
892				      USB_CDC_PROTO_NONE),
893	.driver_info = (unsigned long)&wwan_info,
894}, {
895	/* U-blox SARA-U2 */
896	USB_DEVICE_AND_INTERFACE_INFO(UBLOX_VENDOR_ID, 0x1104, USB_CLASS_COMM,
897				      USB_CDC_SUBCLASS_ETHERNET,
898				      USB_CDC_PROTO_NONE),
899	.driver_info = (unsigned long)&wwan_info,
900}, {
901	/* U-blox LARA-R6 01B */
902	USB_DEVICE_AND_INTERFACE_INFO(UBLOX_VENDOR_ID, 0x1313, USB_CLASS_COMM,
903				      USB_CDC_SUBCLASS_ETHERNET,
904				      USB_CDC_PROTO_NONE),
905	.driver_info = (unsigned long)&wwan_info,
906}, {
907	/* U-blox LARA-L6 */
908	USB_DEVICE_AND_INTERFACE_INFO(UBLOX_VENDOR_ID, 0x1343, USB_CLASS_COMM,
909				      USB_CDC_SUBCLASS_ETHERNET,
910				      USB_CDC_PROTO_NONE),
911	.driver_info = (unsigned long)&wwan_info,
912}, {
913	/* Cinterion PLS8 modem by GEMALTO */
914	USB_DEVICE_AND_INTERFACE_INFO(0x1e2d, 0x0061, USB_CLASS_COMM,
915				      USB_CDC_SUBCLASS_ETHERNET,
916				      USB_CDC_PROTO_NONE),
917	.driver_info = (unsigned long)&wwan_info,
918}, {
919	/* Cinterion AHS3 modem by GEMALTO */
920	USB_DEVICE_AND_INTERFACE_INFO(0x1e2d, 0x0055, USB_CLASS_COMM,
921				      USB_CDC_SUBCLASS_ETHERNET,
922				      USB_CDC_PROTO_NONE),
923	.driver_info = (unsigned long)&wwan_info,
924}, {
925	/* Cinterion PLS62-W modem by GEMALTO/THALES */
926	USB_DEVICE_AND_INTERFACE_INFO(0x1e2d, 0x005b, USB_CLASS_COMM,
927				      USB_CDC_SUBCLASS_ETHERNET,
928				      USB_CDC_PROTO_NONE),
929	.driver_info = (unsigned long)&wwan_info,
930}, {
931	/* Cinterion PLS83/PLS63 modem by GEMALTO/THALES */
932	USB_DEVICE_AND_INTERFACE_INFO(0x1e2d, 0x0069, USB_CLASS_COMM,
933				      USB_CDC_SUBCLASS_ETHERNET,
934				      USB_CDC_PROTO_NONE),
935	.driver_info = (unsigned long)&wwan_info,
936}, {
937	USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
938			USB_CDC_PROTO_NONE),
939	.driver_info = (unsigned long) &cdc_info,
940}, {
941	USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
942			USB_CDC_PROTO_NONE),
943	.driver_info = (unsigned long)&wwan_info,
944
945}, {
946	/* Various Huawei modems with a network port like the UMG1831 */
947	USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_COMM,
948				      USB_CDC_SUBCLASS_ETHERNET, 255),
949	.driver_info = (unsigned long)&wwan_info,
950},
951	{ },		/* END */
952};
953MODULE_DEVICE_TABLE(usb, products);
954
955static struct usb_driver cdc_driver = {
956	.name =		"cdc_ether",
957	.id_table =	products,
958	.probe =	usbnet_probe,
959	.disconnect =	usbnet_disconnect,
960	.suspend =	usbnet_suspend,
961	.resume =	usbnet_resume,
962	.reset_resume =	usbnet_resume,
963	.supports_autosuspend = 1,
964	.disable_hub_initiated_lpm = 1,
965};
966
967module_usb_driver(cdc_driver);
968
969MODULE_AUTHOR("David Brownell");
970MODULE_DESCRIPTION("USB CDC Ethernet devices");
971MODULE_LICENSE("GPL");
v5.9
  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");