[linux-2.6-block.git] / drivers / net / usb / lg-vl600.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Ethernet interface part of the LG VL600 LTE modem (4G dongle)
 *
 * Copyright (C) 2011 Intel Corporation
 * Author: Andrzej Zaborowski <balrogg@gmail.com>
 */
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/mii.h>
#include <linux/usb.h>
#include <linux/usb/cdc.h>
#include <linux/usb/usbnet.h>
#include <linux/if_ether.h>
#include <linux/if_arp.h>
#include <linux/inetdevice.h>
#include <linux/module.h>

/*
 * The device has a CDC ACM port for modem control (it claims to be
 * CDC ACM anyway) and a CDC Ethernet port for actual network data.
 * It will however ignore data on both ports that is not encapsulated
 * in a specific way, any data returned is also encapsulated the same
 * way.  The headers don't seem to follow any popular standard.
 *
 * This driver adds and strips these headers from the ethernet frames
 * sent/received from the CDC Ethernet port.  The proprietary header
 * replaces the standard ethernet header in a packet so only actual
 * ethernet frames are allowed.  The headers allow some form of
 * multiplexing by using non standard values of the .h_proto field.
 * Windows/Mac drivers do send a couple of such frames to the device
 * during initialisation, with protocol set to 0x0906 or 0x0b06 and (what
 * seems to be) a flag in the .dummy_flags.  This doesn't seem necessary
 * for modem operation but can possibly be used for GPS or other funcitons.
 */

struct vl600_frame_hdr {
	__le32 len;
	__le32 serial;
	__le32 pkt_cnt;
	__le32 dummy_flags;
	__le32 dummy;
	__le32 magic;
} __attribute__((packed));

struct vl600_pkt_hdr {
	__le32 dummy[2];
	__le32 len;
	__be16 h_proto;
} __attribute__((packed));

struct vl600_state {
	struct sk_buff *current_rx_buf;
};

static int vl600_bind(struct usbnet *dev, struct usb_interface *intf)
{
	int ret;
	struct vl600_state *s = kzalloc(sizeof(struct vl600_state), GFP_KERNEL);

	if (!s)
		return -ENOMEM;

	ret = usbnet_cdc_bind(dev, intf);
	if (ret) {
		kfree(s);
		return ret;
	}

	dev->driver_priv = s;

	/* ARP packets don't go through, but they're also of no use.  The
	 * subnet has only two hosts anyway: us and the gateway / DHCP
	 * server (probably simulated by modem firmware or network operator)
	 * whose address changes everytime we connect to the intarwebz and
	 * who doesn't bother answering ARP requests either.  So hardware
	 * addresses have no meaning, the destination and the source of every
	 * packet depend only on whether it is on the IN or OUT endpoint.  */
	dev->net->flags |= IFF_NOARP;
	/* IPv6 NDP relies on multicast.  Enable it by default. */
	dev->net->flags |= IFF_MULTICAST;

	return ret;
}

static void vl600_unbind(struct usbnet *dev, struct usb_interface *intf)
{
	struct vl600_state *s = dev->driver_priv;

	if (s->current_rx_buf)
		dev_kfree_skb(s->current_rx_buf);

	kfree(s);

	return usbnet_cdc_unbind(dev, intf);
}

static int vl600_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
{
	struct vl600_frame_hdr *frame;
	struct vl600_pkt_hdr *packet;
	struct ethhdr *ethhdr;
	int packet_len, count;
	struct sk_buff *buf = skb;
	struct sk_buff *clone;
	struct vl600_state *s = dev->driver_priv;

	/* Frame lengths are generally 4B multiplies but every couple of
	 * hours there's an odd number of bytes sized yet correct frame,
	 * so don't require this.  */

	/* Allow a packet (or multiple packets batched together) to be
	 * split across many frames.  We don't allow a new batch to
	 * begin in the same frame another one is ending however, and no
	 * leading or trailing pad bytes.  */
	if (s->current_rx_buf) {
		frame = (struct vl600_frame_hdr *) s->current_rx_buf->data;
		if (skb->len + s->current_rx_buf->len >
				le32_to_cpup(&frame->len)) {
			netif_err(dev, ifup, dev->net, "Fragment too long\n");
			dev->net->stats.rx_length_errors++;
			goto error;
		}

		buf = s->current_rx_buf;
		skb_put_data(buf, skb->data, skb->len);
	} else if (skb->len < 4) {
		netif_err(dev, ifup, dev->net, "Frame too short\n");
		dev->net->stats.rx_length_errors++;
		goto error;
	}

	frame = (struct vl600_frame_hdr *) buf->data;
	/* Yes, check that frame->magic == 0x53544448 (or 0x44544d48),
	 * otherwise we may run out of memory w/a bad packet */
	if (ntohl(frame->magic) != 0x53544448 &&
			ntohl(frame->magic) != 0x44544d48)
		goto error;

	if (buf->len < sizeof(*frame) ||
			buf->len != le32_to_cpup(&frame->len)) {
		/* Save this fragment for later assembly */
		if (s->current_rx_buf)
			return 0;

		s->current_rx_buf = skb_copy_expand(skb, 0,
				le32_to_cpup(&frame->len), GFP_ATOMIC);
		if (!s->current_rx_buf)
			dev->net->stats.rx_errors++;

		return 0;
	}

	count = le32_to_cpup(&frame->pkt_cnt);

	skb_pull(buf, sizeof(*frame));

	while (count--) {
		if (buf->len < sizeof(*packet)) {
			netif_err(dev, ifup, dev->net, "Packet too short\n");
			goto error;
		}

		packet = (struct vl600_pkt_hdr *) buf->data;
		packet_len = sizeof(*packet) + le32_to_cpup(&packet->len);
		if (packet_len > buf->len) {
			netif_err(dev, ifup, dev->net,
					"Bad packet length stored in header\n");
			goto error;
		}

		/* Packet header is same size as the ethernet header
		 * (sizeof(*packet) == sizeof(*ethhdr)), additionally
		 * the h_proto field is in the same place so we just leave it
		 * alone and fill in the remaining fields.
		 */
		ethhdr = (struct ethhdr *) skb->data;
		if (be16_to_cpup(&ethhdr->h_proto) == ETH_P_ARP &&
				buf->len > 0x26) {
			/* Copy the addresses from packet contents */
			memcpy(ethhdr->h_source,
					&buf->data[sizeof(*ethhdr) + 0x8],
					ETH_ALEN);
			memcpy(ethhdr->h_dest,
					&buf->data[sizeof(*ethhdr) + 0x12],
					ETH_ALEN);
		} else {
			eth_zero_addr(ethhdr->h_source);
			memcpy(ethhdr->h_dest, dev->net->dev_addr, ETH_ALEN);

			/* Inbound IPv6 packets have an IPv4 ethertype (0x800)
			 * for some reason.  Peek at the L3 header to check
			 * for IPv6 packets, and set the ethertype to IPv6
			 * (0x86dd) so Linux can understand it.
			 */
			if ((buf->data[sizeof(*ethhdr)] & 0xf0) == 0x60)
				ethhdr->h_proto = htons(ETH_P_IPV6);
		}

		if (count) {
			/* Not the last packet in this batch */
			clone = skb_clone(buf, GFP_ATOMIC);
			if (!clone)
				goto error;

			skb_trim(clone, packet_len);
			usbnet_skb_return(dev, clone);

			skb_pull(buf, (packet_len + 3) & ~3);
		} else {
			skb_trim(buf, packet_len);

			if (s->current_rx_buf) {
				usbnet_skb_return(dev, buf);
				s->current_rx_buf = NULL;
				return 0;
			}

			return 1;
		}
	}

error:
	if (s->current_rx_buf) {
		dev_kfree_skb_any(s->current_rx_buf);
		s->current_rx_buf = NULL;
	}
	dev->net->stats.rx_errors++;
	return 0;
}

static struct sk_buff *vl600_tx_fixup(struct usbnet *dev,
		struct sk_buff *skb, gfp_t flags)
{
	struct sk_buff *ret;
	struct vl600_frame_hdr *frame;
	struct vl600_pkt_hdr *packet;
	static uint32_t serial = 1;
	int orig_len = skb->len - sizeof(struct ethhdr);
	int full_len = (skb->len + sizeof(struct vl600_frame_hdr) + 3) & ~3;

	frame = (struct vl600_frame_hdr *) skb->data;
	if (skb->len > sizeof(*frame) && skb->len == le32_to_cpup(&frame->len))
		return skb; /* Already encapsulated? */

	if (skb->len < sizeof(struct ethhdr))
		/* Drop, device can only deal with ethernet packets */
		return NULL;

	if (!skb_cloned(skb)) {
		int headroom = skb_headroom(skb);
		int tailroom = skb_tailroom(skb);

		if (tailroom >= full_len - skb->len - sizeof(*frame) &&
				headroom >= sizeof(*frame))
			/* There's enough head and tail room */
			goto encapsulate;

		if (headroom + tailroom + skb->len >= full_len) {
			/* There's enough total room, just readjust */
			skb->data = memmove(skb->head + sizeof(*frame),
					skb->data, skb->len);
			skb_set_tail_pointer(skb, skb->len);
			goto encapsulate;
		}
	}

	/* Alloc a new skb with the required size */
	ret = skb_copy_expand(skb, sizeof(struct vl600_frame_hdr), full_len -
			skb->len - sizeof(struct vl600_frame_hdr), flags);
	dev_kfree_skb_any(skb);
	if (!ret)
		return ret;
	skb = ret;

encapsulate:
	/* Packet header is same size as ethernet packet header
	 * (sizeof(*packet) == sizeof(struct ethhdr)), additionally the
	 * h_proto field is in the same place so we just leave it alone and
	 * overwrite the remaining fields.
	 */
	packet = (struct vl600_pkt_hdr *) skb->data;
	/* The VL600 wants IPv6 packets to have an IPv4 ethertype
	 * Since this modem only supports IPv4 and IPv6, just set all
	 * frames to 0x0800 (ETH_P_IP)
	 */
	packet->h_proto = htons(ETH_P_IP);
	memset(&packet->dummy, 0, sizeof(packet->dummy));
	packet->len = cpu_to_le32(orig_len);

	frame = skb_push(skb, sizeof(*frame));
	memset(frame, 0, sizeof(*frame));
	frame->len = cpu_to_le32(full_len);
	frame->serial = cpu_to_le32(serial++);
	frame->pkt_cnt = cpu_to_le32(1);

	if (skb->len < full_len) /* Pad */
		skb_put(skb, full_len - skb->len);

	return skb;
}

static const struct driver_info	vl600_info = {
	.description	= "LG VL600 modem",
	.flags		= FLAG_RX_ASSEMBLE | FLAG_WWAN,
	.bind		= vl600_bind,
	.unbind		= vl600_unbind,
	.status		= usbnet_cdc_status,
	.rx_fixup	= vl600_rx_fixup,
	.tx_fixup	= vl600_tx_fixup,
};

static const struct usb_device_id products[] = {
	{
		USB_DEVICE_AND_INTERFACE_INFO(0x1004, 0x61aa, USB_CLASS_COMM,
				USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
		.driver_info	= (unsigned long) &vl600_info,
	},
	{},	/* End */
};
MODULE_DEVICE_TABLE(usb, products);

static struct usb_driver lg_vl600_driver = {
	.name		= "lg-vl600",
	.id_table	= products,
	.probe		= usbnet_probe,
	.disconnect	= usbnet_disconnect,
	.suspend	= usbnet_suspend,
	.resume		= usbnet_resume,
	.disable_hub_initiated_lpm = 1,
};

module_usb_driver(lg_vl600_driver);

MODULE_AUTHOR("Anrzej Zaborowski");
MODULE_DESCRIPTION("LG-VL600 modem's ethernet link");
MODULE_LICENSE("GPL");
Commit	Line	Data
1ccea77e	1	// SPDX-License-Identifier: GPL-2.0-or-later
7a635ea9 AZ	2	/*
	3	* Ethernet interface part of the LG VL600 LTE modem (4G dongle)
	4	*
	5	* Copyright (C) 2011 Intel Corporation
	6	* Author: Andrzej Zaborowski <balrogg@gmail.com>
7a635ea9 AZ	7	*/
	8	#include <linux/etherdevice.h>
	9	#include <linux/ethtool.h>
	10	#include <linux/mii.h>
	11	#include <linux/usb.h>
	12	#include <linux/usb/cdc.h>
	13	#include <linux/usb/usbnet.h>
	14	#include <linux/if_ether.h>
	15	#include <linux/if_arp.h>
	16	#include <linux/inetdevice.h>
9d9779e7	17	#include <linux/module.h>
7a635ea9 AZ	18
	19	/*
	20	* The device has a CDC ACM port for modem control (it claims to be
	21	* CDC ACM anyway) and a CDC Ethernet port for actual network data.
	22	* It will however ignore data on both ports that is not encapsulated
	23	* in a specific way, any data returned is also encapsulated the same
	24	* way. The headers don't seem to follow any popular standard.
	25	*
	26	* This driver adds and strips these headers from the ethernet frames
	27	* sent/received from the CDC Ethernet port. The proprietary header
	28	* replaces the standard ethernet header in a packet so only actual
	29	* ethernet frames are allowed. The headers allow some form of
	30	* multiplexing by using non standard values of the .h_proto field.
	31	* Windows/Mac drivers do send a couple of such frames to the device
	32	* during initialisation, with protocol set to 0x0906 or 0x0b06 and (what
	33	* seems to be) a flag in the .dummy_flags. This doesn't seem necessary
	34	* for modem operation but can possibly be used for GPS or other funcitons.
	35	*/
	36
	37	struct vl600_frame_hdr {
	38	__le32 len;
	39	__le32 serial;
	40	__le32 pkt_cnt;
	41	__le32 dummy_flags;
	42	__le32 dummy;
	43	__le32 magic;
	44	} __attribute__((packed));
	45
	46	struct vl600_pkt_hdr {
	47	__le32 dummy[2];
	48	__le32 len;
	49	__be16 h_proto;
	50	} __attribute__((packed));
	51
	52	struct vl600_state {
	53	struct sk_buff *current_rx_buf;
	54	};
	55
	56	static int vl600_bind(struct usbnet dev, struct usb_interface intf)
	57	{
	58	int ret;
	59	struct vl600_state *s = kzalloc(sizeof(struct vl600_state), GFP_KERNEL);
	60
	61	if (!s)
	62	return -ENOMEM;
	63
	64	ret = usbnet_cdc_bind(dev, intf);
	65	if (ret) {
	66	kfree(s);
	67	return ret;
	68	}
	69
	70	dev->driver_priv = s;
	71
	72	/* ARP packets don't go through, but they're also of no use. The
	73	* subnet has only two hosts anyway: us and the gateway / DHCP
	74	* server (probably simulated by modem firmware or network operator)
	75	* whose address changes everytime we connect to the intarwebz and
	76	* who doesn't bother answering ARP requests either. So hardware
	77	* addresses have no meaning, the destination and the source of every
	78	* packet depend only on whether it is on the IN or OUT endpoint. */
	79	dev->net->flags \|= IFF_NOARP;
2ae40ee9 MK	80	/* IPv6 NDP relies on multicast. Enable it by default. */
2ae40ee9 MK	81	dev->net->flags \|= IFF_MULTICAST;
7a635ea9 AZ	82
	83	return ret;
	84	}
	85
	86	static void vl600_unbind(struct usbnet dev, struct usb_interface intf)
	87	{
	88	struct vl600_state *s = dev->driver_priv;
	89
	90	if (s->current_rx_buf)
	91	dev_kfree_skb(s->current_rx_buf);
	92
	93	kfree(s);
	94
	95	return usbnet_cdc_unbind(dev, intf);
	96	}
	97
	98	static int vl600_rx_fixup(struct usbnet dev, struct sk_buff skb)
	99	{
	100	struct vl600_frame_hdr *frame;
	101	struct vl600_pkt_hdr *packet;
	102	struct ethhdr *ethhdr;
	103	int packet_len, count;
	104	struct sk_buff *buf = skb;
	105	struct sk_buff *clone;
	106	struct vl600_state *s = dev->driver_priv;
	107
	108	/* Frame lengths are generally 4B multiplies but every couple of
	109	* hours there's an odd number of bytes sized yet correct frame,
	110	* so don't require this. */
	111
	112	/* Allow a packet (or multiple packets batched together) to be
	113	* split across many frames. We don't allow a new batch to
	114	* begin in the same frame another one is ending however, and no
	115	* leading or trailing pad bytes. */
	116	if (s->current_rx_buf) {
	117	frame = (struct vl600_frame_hdr *) s->current_rx_buf->data;
	118	if (skb->len + s->current_rx_buf->len >
	119	le32_to_cpup(&frame->len)) {
	120	netif_err(dev, ifup, dev->net, "Fragment too long\n");
	121	dev->net->stats.rx_length_errors++;
	122	goto error;
	123	}
	124
	125	buf = s->current_rx_buf;
59ae1d12	126	skb_put_data(buf, skb->data, skb->len);
7a635ea9 AZ	127	} else if (skb->len < 4) {
	128	netif_err(dev, ifup, dev->net, "Frame too short\n");
	129	dev->net->stats.rx_length_errors++;
	130	goto error;
	131	}
	132
	133	frame = (struct vl600_frame_hdr *) buf->data;
6d74eb94 MK	134	/* Yes, check that frame->magic == 0x53544448 (or 0x44544d48),
	135	* otherwise we may run out of memory w/a bad packet */
	136	if (ntohl(frame->magic) != 0x53544448 &&
	137	ntohl(frame->magic) != 0x44544d48)
	138	goto error;
7a635ea9 AZ	139
	140	if (buf->len < sizeof(*frame) \|\|
	141	buf->len != le32_to_cpup(&frame->len)) {
	142	/* Save this fragment for later assembly */
	143	if (s->current_rx_buf)
	144	return 0;
	145
	146	s->current_rx_buf = skb_copy_expand(skb, 0,
	147	le32_to_cpup(&frame->len), GFP_ATOMIC);
0c3d5a96	148	if (!s->current_rx_buf)
7a635ea9	149	dev->net->stats.rx_errors++;
7a635ea9 AZ	150
	151	return 0;
	152	}
	153
	154	count = le32_to_cpup(&frame->pkt_cnt);
	155
	156	skb_pull(buf, sizeof(*frame));
	157
	158	while (count--) {
	159	if (buf->len < sizeof(*packet)) {
	160	netif_err(dev, ifup, dev->net, "Packet too short\n");
	161	goto error;
	162	}
	163
	164	packet = (struct vl600_pkt_hdr *) buf->data;
	165	packet_len = sizeof(*packet) + le32_to_cpup(&packet->len);
	166	if (packet_len > buf->len) {
	167	netif_err(dev, ifup, dev->net,
	168	"Bad packet length stored in header\n");
	169	goto error;
	170	}
	171
	172	/* Packet header is same size as the ethernet header
	173	* (sizeof(packet) == sizeof(ethhdr)), additionally
	174	* the h_proto field is in the same place so we just leave it
	175	* alone and fill in the remaining fields.
	176	*/
	177	ethhdr = (struct ethhdr *) skb->data;
	178	if (be16_to_cpup(&ethhdr->h_proto) == ETH_P_ARP &&
	179	buf->len > 0x26) {
	180	/* Copy the addresses from packet contents */
	181	memcpy(ethhdr->h_source,
	182	&buf->data[sizeof(*ethhdr) + 0x8],
	183	ETH_ALEN);
	184	memcpy(ethhdr->h_dest,
	185	&buf->data[sizeof(*ethhdr) + 0x12],
	186	ETH_ALEN);
	187	} else {
519983b1	188	eth_zero_addr(ethhdr->h_source);
7a635ea9	189	memcpy(ethhdr->h_dest, dev->net->dev_addr, ETH_ALEN);
2ae40ee9 MK	190
	191	/* Inbound IPv6 packets have an IPv4 ethertype (0x800)
	192	* for some reason. Peek at the L3 header to check
	193	* for IPv6 packets, and set the ethertype to IPv6
	194	* (0x86dd) so Linux can understand it.
	195	*/
	196	if ((buf->data[sizeof(*ethhdr)] & 0xf0) == 0x60)
1f36fc74	197	ethhdr->h_proto = htons(ETH_P_IPV6);
7a635ea9 AZ	198	}
	199
	200	if (count) {
	201	/* Not the last packet in this batch */
	202	clone = skb_clone(buf, GFP_ATOMIC);
	203	if (!clone)
	204	goto error;
	205
	206	skb_trim(clone, packet_len);
	207	usbnet_skb_return(dev, clone);
	208
	209	skb_pull(buf, (packet_len + 3) & ~3);
	210	} else {
	211	skb_trim(buf, packet_len);
	212
	213	if (s->current_rx_buf) {
	214	usbnet_skb_return(dev, buf);
	215	s->current_rx_buf = NULL;
	216	return 0;
	217	}
	218
	219	return 1;
	220	}
	221	}
	222
	223	error:
	224	if (s->current_rx_buf) {
	225	dev_kfree_skb_any(s->current_rx_buf);
	226	s->current_rx_buf = NULL;
	227	}
	228	dev->net->stats.rx_errors++;
	229	return 0;
	230	}
	231
	232	static struct sk_buff vl600_tx_fixup(struct usbnet dev,
	233	struct sk_buff *skb, gfp_t flags)
	234	{
	235	struct sk_buff *ret;
	236	struct vl600_frame_hdr *frame;
	237	struct vl600_pkt_hdr *packet;
	238	static uint32_t serial = 1;
	239	int orig_len = skb->len - sizeof(struct ethhdr);
	240	int full_len = (skb->len + sizeof(struct vl600_frame_hdr) + 3) & ~3;
	241
	242	frame = (struct vl600_frame_hdr *) skb->data;
	243	if (skb->len > sizeof(*frame) && skb->len == le32_to_cpup(&frame->len))
	244	return skb; /* Already encapsulated? */
	245
	246	if (skb->len < sizeof(struct ethhdr))
	247	/* Drop, device can only deal with ethernet packets */
	248	return NULL;
	249
	250	if (!skb_cloned(skb)) {
	251	int headroom = skb_headroom(skb);
	252	int tailroom = skb_tailroom(skb);
	253
	254	if (tailroom >= full_len - skb->len - sizeof(*frame) &&
	255	headroom >= sizeof(*frame))
	256	/* There's enough head and tail room */
	257	goto encapsulate;
	258
	259	if (headroom + tailroom + skb->len >= full_len) {
	260	/* There's enough total room, just readjust */
	261	skb->data = memmove(skb->head + sizeof(*frame),
262	skb->data, skb->len);
263	skb_set_tail_pointer(skb, skb->len);
264	goto encapsulate;
265	}
266	}
267
268	/* Alloc a new skb with the required size */
269	ret = skb_copy_expand(skb, sizeof(struct vl600_frame_hdr), full_len -
270	skb->len - sizeof(struct vl600_frame_hdr), flags);
271	dev_kfree_skb_any(skb);
272	if (!ret)
273	return ret;
274	skb = ret;
275
276	encapsulate:
277	/* Packet header is same size as ethernet packet header
278	* (sizeof(*packet) == sizeof(struct ethhdr)), additionally the
279	* h_proto field is in the same place so we just leave it alone and
280	* overwrite the remaining fields.
281	*/
282	packet = (struct vl600_pkt_hdr *) skb->data;
6d74eb94 MK	283	/* The VL600 wants IPv6 packets to have an IPv4 ethertype
	284	* Since this modem only supports IPv4 and IPv6, just set all
	285	* frames to 0x0800 (ETH_P_IP)
	286	*/
	287	packet->h_proto = htons(ETH_P_IP);
7a635ea9 AZ	288	memset(&packet->dummy, 0, sizeof(packet->dummy));
	289	packet->len = cpu_to_le32(orig_len);
	290
d58ff351	291	frame = skb_push(skb, sizeof(*frame));
7a635ea9 AZ	292	memset(frame, 0, sizeof(*frame));
	293	frame->len = cpu_to_le32(full_len);
	294	frame->serial = cpu_to_le32(serial++);
	295	frame->pkt_cnt = cpu_to_le32(1);
	296
	297	if (skb->len < full_len) /* Pad */
	298	skb_put(skb, full_len - skb->len);
	299
	300	return skb;
	301	}
	302
	303	static const struct driver_info vl600_info = {
	304	.description = "LG VL600 modem",
6d74eb94	305	.flags = FLAG_RX_ASSEMBLE \| FLAG_WWAN,
7a635ea9 AZ	306	.bind = vl600_bind,
	307	.unbind = vl600_unbind,
	308	.status = usbnet_cdc_status,
	309	.rx_fixup = vl600_rx_fixup,
	310	.tx_fixup = vl600_tx_fixup,
	311	};
	312
	313	static const struct usb_device_id products[] = {
	314	{
	315	USB_DEVICE_AND_INTERFACE_INFO(0x1004, 0x61aa, USB_CLASS_COMM,
	316	USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
	317	.driver_info = (unsigned long) &vl600_info,
	318	},
	319	{}, /* End */
	320	};
	321	MODULE_DEVICE_TABLE(usb, products);
	322
	323	static struct usb_driver lg_vl600_driver = {
	324	.name = "lg-vl600",
	325	.id_table = products,
	326	.probe = usbnet_probe,
	327	.disconnect = usbnet_disconnect,
	328	.suspend = usbnet_suspend,
	329	.resume = usbnet_resume,
e1f12eb6	330	.disable_hub_initiated_lpm = 1,
7a635ea9 AZ	331	};
7a635ea9 AZ	332
d632eb1b	333	module_usb_driver(lg_vl600_driver);
7a635ea9 AZ	334
	335	MODULE_AUTHOR("Anrzej Zaborowski");
	336	MODULE_DESCRIPTION("LG-VL600 modem's ethernet link");
	337	MODULE_LICENSE("GPL");