Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 4106 insertions, 0 deletions

diff --git a/drivers/usb/net/usbnet.c b/drivers/usb/net/usbnet.c
new file mode 100644
index 00000000000..dd8b4456ea3
--- /dev/null
+++ b/drivers/usb/net/usbnet.c
@@ -0,0 +1,4106 @@
+/*
+ * USB Networking Links
+ * Copyright (C) 2000-2003 by David Brownell <dbrownell@users.sourceforge.net>
+ * Copyright (C) 2002 Pavel Machek <pavel@ucw.cz>
+ * Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com>
+ * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
+ * Copyright (c) 2002-2003 TiVo Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+ * This is a generic "USB networking" framework that works with several
+ * kinds of full and high speed networking devices:
+ *
+ *   + USB host-to-host "network cables", used for IP-over-USB links.
+ *     These are often used for Laplink style connectivity products.
+ *	- AnchorChip 2720
+ *	- Belkin, eTEK (interops with Win32 drivers)
+ *	- GeneSys GL620USB-A
+ *	- NetChip 1080 (interoperates with NetChip Win32 drivers)
+ *	- Prolific PL-2301/2302 (replaces "plusb" driver)
+ *	- KC Technology KC2190
+ *
+ *   + Smart USB devices can support such links directly, using Internet
+ *     standard protocols instead of proprietary host-to-device links.
+ *	- Linux PDAs like iPaq, Yopy, and Zaurus
+ *	- The BLOB boot loader (for diskless booting)
+ *	- Linux "gadgets", perhaps using PXA-2xx or Net2280 controllers
+ *	- Devices using EPSON's sample USB firmware
+ *	- CDC-Ethernet class devices, such as many cable modems
+ *
+ *   + Adapters to networks such as Ethernet.
+ *	- AX8817X based USB 2.0 products
+ *
+ * Links to these devices can be bridged using Linux Ethernet bridging.
+ * With minor exceptions, these all use similar USB framing for network
+ * traffic, but need different protocols for control traffic.
+ *
+ * USB devices can implement their side of this protocol at the cost
+ * of two bulk endpoints; it's not restricted to "cable" applications.
+ * See the SA1110, Zaurus, or EPSON device/client support in this driver;
+ * slave/target drivers such as "usb-eth" (on most SA-1100 PDAs) or
+ * "g_ether" (in the Linux "gadget" framework) implement that behavior
+ * within devices.
+ *
+ *
+ * CHANGELOG:
+ *
+ * 13-sep-2000	experimental, new
+ * 10-oct-2000	usb_device_id table created. 
+ * 28-oct-2000	misc fixes; mostly, discard more TTL-mangled rx packets.
+ * 01-nov-2000	usb_device_id table and probing api update by
+ *		Adam J. Richter <adam@yggdrasil.com>.
+ * 18-dec-2000	(db) tx watchdog, "net1080" renaming to "usbnet", device_info
+ *		and prolific support, isolate net1080-specific bits, cleanup.
+ *		fix unlink_urbs oops in D3 PM resume code path.
+ *
+ * 02-feb-2001	(db) fix tx skb sharing, packet length, match_flags, ...
+ * 08-feb-2001	stubbed in "linuxdev", maybe the SA-1100 folk can use it;
+ *		AnchorChips 2720 support (from spec) for testing;
+ *		fix bit-ordering problem with ethernet multicast addr
+ * 19-feb-2001  Support for clearing halt conditions. SA1100 UDC support
+ *		updates. Oleg Drokin (green@iXcelerator.com)
+ * 25-mar-2001	More SA-1100 updates, including workaround for ip problem
+ *		expecting cleared skb->cb and framing change to match latest
+ *		handhelds.org version (Oleg).  Enable device IDs from the
+ *		Win32 Belkin driver; other cleanups (db).
+ * 16-jul-2001	Bugfixes for uhci oops-on-unplug, Belkin support, various
+ *		cleanups for problems not yet seen in the field. (db)
+ * 17-oct-2001	Handle "Advance USBNET" product, like Belkin/eTEK devices,
+ *		from Ioannis Mavroukakis <i.mavroukakis@btinternet.com>;
+ *		rx unlinks somehow weren't async; minor cleanup.
+ * 03-nov-2001	Merged GeneSys driver; original code from Jiun-Jie Huang
+ *		<huangjj@genesyslogic.com.tw>, updated by Stanislav Brabec
+ *		<utx@penguin.cz>.  Made framing options (NetChip/GeneSys)
+ *		tie mostly to (sub)driver info.  Workaround some PL-2302
+ *		chips that seem to reject SET_INTERFACE requests.
+ *
+ * 06-apr-2002	Added ethtool support, based on a patch from Brad Hards.
+ *		Level of diagnostics is more configurable; they use device
+ *		location (usb_device->devpath) instead of address (2.5).
+ *		For tx_fixup, memflags can't be NOIO.
+ * 07-may-2002	Generalize/cleanup keventd support, handling rx stalls (mostly
+ *		for USB 2.0 TTs) and memory shortages (potential) too. (db)
+ *		Use "locally assigned" IEEE802 address space. (Brad Hards)
+ * 18-oct-2002	Support for Zaurus (Pavel Machek), related cleanup (db).
+ * 14-dec-2002	Remove Zaurus-private crc32 code (Pavel); 2.5 oops fix,
+ * 		cleanups and stubbed PXA-250 support (db), fix for framing
+ * 		issues on Z, net1080, and gl620a (Toby Milne)
+ *
+ * 31-mar-2003	Use endpoint descriptors:  high speed support, simpler sa1100
+ * 		vs pxa25x, and CDC Ethernet.  Throttle down log floods on
+ * 		disconnect; other cleanups. (db)  Flush net1080 fifos
+ * 		after several sequential framing errors. (Johannes Erdfelt)
+ * 22-aug-2003	AX8817X support (Dave Hollis).
+ * 14-jun-2004  Trivial patch for AX8817X based Buffalo LUA-U2-KTX in Japan
+ *		(Neil Bortnak)
+ * 03-nov-2004	Trivial patch for KC2190 (KC-190) chip. (Jonathan McDowell)
+ *
+ * 01-feb-2005	AX88772 support (Phil Chang & Dave Hollis)
+ *-------------------------------------------------------------------------*/
+
+// #define	DEBUG			// error path messages, extra info
+// #define	VERBOSE			// more; success messages
+
+#include <linux/config.h>
+#ifdef	CONFIG_USB_DEBUG
+#   define DEBUG
+#endif
+#include <linux/module.h>
+#include <linux/kmod.h>
+#include <linux/sched.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/random.h>
+#include <linux/ethtool.h>
+#include <linux/workqueue.h>
+#include <linux/mii.h>
+#include <asm/uaccess.h>
+#include <asm/unaligned.h>
+#include <linux/usb.h>
+#include <asm/io.h>
+#include <asm/scatterlist.h>
+#include <linux/mm.h>
+#include <linux/dma-mapping.h>
+
+#define DRIVER_VERSION		"03-Nov-2004"
+
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * Nineteen USB 1.1 max size bulk transactions per frame (ms), max.
+ * Several dozen bytes of IPv4 data can fit in two such transactions.
+ * One maximum size Ethernet packet takes twenty four of them.
+ * For high speed, each frame comfortably fits almost 36 max size
+ * Ethernet packets (so queues should be bigger).
+ */
+#define	RX_QLEN(dev) (((dev)->udev->speed == USB_SPEED_HIGH) ? 60 : 4)
+#define	TX_QLEN(dev) (((dev)->udev->speed == USB_SPEED_HIGH) ? 60 : 4)
+
+// packets are always ethernet inside
+// ... except they can be bigger (limit of 64K with NetChip framing)
+#define MIN_PACKET	sizeof(struct ethhdr)
+#define MAX_PACKET	32768
+
+// reawaken network queue this soon after stopping; else watchdog barks
+#define TX_TIMEOUT_JIFFIES	(5*HZ)
+
+// throttle rx/tx briefly after some faults, so khubd might disconnect()
+// us (it polls at HZ/4 usually) before we report too many false errors.
+#define THROTTLE_JIFFIES	(HZ/8)
+
+// for vendor-specific control operations
+#define	CONTROL_TIMEOUT_MS	500
+
+// between wakeups
+#define UNLINK_TIMEOUT_MS	3
+
+/*-------------------------------------------------------------------------*/
+
+// randomly generated ethernet address
+static u8	node_id [ETH_ALEN];
+
+// state we keep for each device we handle
+struct usbnet {
+	// housekeeping
+	struct usb_device	*udev;
+	struct driver_info	*driver_info;
+	wait_queue_head_t	*wait;
+
+	// i/o info: pipes etc
+	unsigned		in, out;
+	struct usb_host_endpoint *status;
+	unsigned		maxpacket;
+	struct timer_list	delay;
+
+	// protocol/interface state
+	struct net_device	*net;
+	struct net_device_stats	stats;
+	int			msg_enable;
+	unsigned long		data [5];
+
+	struct mii_if_info	mii;
+
+	// various kinds of pending driver work
+	struct sk_buff_head	rxq;
+	struct sk_buff_head	txq;
+	struct sk_buff_head	done;
+	struct urb		*interrupt;
+	struct tasklet_struct	bh;
+
+	struct work_struct	kevent;
+	unsigned long		flags;
+#		define EVENT_TX_HALT	0
+#		define EVENT_RX_HALT	1
+#		define EVENT_RX_MEMORY	2
+#		define EVENT_STS_SPLIT	3
+};
+
+// device-specific info used by the driver
+struct driver_info {
+	char		*description;
+
+	int		flags;
+/* framing is CDC Ethernet, not writing ZLPs (hw issues), or optionally: */
+#define FLAG_FRAMING_NC	0x0001		/* guard against device dropouts */ 
+#define FLAG_FRAMING_GL	0x0002		/* genelink batches packets */
+#define FLAG_FRAMING_Z	0x0004		/* zaurus adds a trailer */
+#define FLAG_FRAMING_RN	0x0008		/* RNDIS batches, plus huge header */
+
+#define FLAG_NO_SETINT	0x0010		/* device can't set_interface() */
+#define FLAG_ETHER	0x0020		/* maybe use "eth%d" names */
+
+#define FLAG_FRAMING_AX 0x0040          /* AX88772/178 packets */
+
+	/* init device ... can sleep, or cause probe() failure */
+	int	(*bind)(struct usbnet *, struct usb_interface *);
+
+	/* cleanup device ... can sleep, but can't fail */
+	void	(*unbind)(struct usbnet *, struct usb_interface *);
+
+	/* reset device ... can sleep */
+	int	(*reset)(struct usbnet *);
+
+	/* see if peer is connected ... can sleep */
+	int	(*check_connect)(struct usbnet *);
+
+	/* for status polling */
+	void	(*status)(struct usbnet *, struct urb *);
+
+	/* fixup rx packet (strip framing) */
+	int	(*rx_fixup)(struct usbnet *dev, struct sk_buff *skb);
+
+	/* fixup tx packet (add framing) */
+	struct sk_buff	*(*tx_fixup)(struct usbnet *dev,
+				struct sk_buff *skb, int flags);
+
+	// FIXME -- also an interrupt mechanism
+	// useful for at least PL2301/2302 and GL620USB-A
+	// and CDC use them to report 'is it connected' changes
+
+	/* for new devices, use the descriptor-reading code instead */
+	int		in;		/* rx endpoint */
+	int		out;		/* tx endpoint */
+
+	unsigned long	data;		/* Misc driver specific data */
+};
+
+// we record the state for each of our queued skbs
+enum skb_state {
+	illegal = 0,
+	tx_start, tx_done,
+	rx_start, rx_done, rx_cleanup
+};
+
+struct skb_data {	// skb->cb is one of these
+	struct urb		*urb;
+	struct usbnet		*dev;
+	enum skb_state		state;
+	size_t			length;
+};
+
+static const char driver_name [] = "usbnet";
+
+/* use ethtool to change the level for any given device */
+static int msg_level = -1;
+module_param (msg_level, int, 0);
+MODULE_PARM_DESC (msg_level, "Override default message level");
+
+
+#ifdef DEBUG
+#define devdbg(usbnet, fmt, arg...) \
+	printk(KERN_DEBUG "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
+#else
+#define devdbg(usbnet, fmt, arg...) do {} while(0)
+#endif
+
+#define deverr(usbnet, fmt, arg...) \
+	printk(KERN_ERR "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
+#define devwarn(usbnet, fmt, arg...) \
+	printk(KERN_WARNING "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
+
+#define devinfo(usbnet, fmt, arg...) \
+	printk(KERN_INFO "%s: " fmt "\n" , (usbnet)->net->name , ## arg); \
+
+/*-------------------------------------------------------------------------*/
+
+static void usbnet_get_drvinfo (struct net_device *, struct ethtool_drvinfo *);
+static u32 usbnet_get_link (struct net_device *);
+static u32 usbnet_get_msglevel (struct net_device *);
+static void usbnet_set_msglevel (struct net_device *, u32);
+
+/* mostly for PDA style devices, which are always connected if present */
+static int always_connected (struct usbnet *dev)
+{
+	return 0;
+}
+
+/* handles CDC Ethernet and many other network "bulk data" interfaces */
+static int
+get_endpoints (struct usbnet *dev, struct usb_interface *intf)
+{
+	int				tmp;
+	struct usb_host_interface	*alt = NULL;
+	struct usb_host_endpoint	*in = NULL, *out = NULL;
+	struct usb_host_endpoint	*status = NULL;
+
+	for (tmp = 0; tmp < intf->num_altsetting; tmp++) {
+		unsigned	ep;
+
+		in = out = status = NULL;
+		alt = intf->altsetting + tmp;
+
+		/* take the first altsetting with in-bulk + out-bulk;
+		 * remember any status endpoint, just in case;
+		 * ignore other endpoints and altsetttings.
+		 */
+		for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) {
+			struct usb_host_endpoint	*e;
+			int				intr = 0;
+
+			e = alt->endpoint + ep;
+			switch (e->desc.bmAttributes) {
+			case USB_ENDPOINT_XFER_INT:
+				if (!(e->desc.bEndpointAddress & USB_DIR_IN))
+					continue;
+				intr = 1;
+				/* FALLTHROUGH */
+			case USB_ENDPOINT_XFER_BULK:
+				break;
+			default:
+				continue;
+			}
+			if (e->desc.bEndpointAddress & USB_DIR_IN) {
+				if (!intr && !in)
+					in = e;
+				else if (intr && !status)
+					status = e;
+			} else {
+				if (!out)
+					out = e;
+			}
+		}
+		if (in && out)
+			break;
+	}
+	if (!alt || !in || !out)
+		return -EINVAL;
+
+	if (alt->desc.bAlternateSetting != 0
+			|| !(dev->driver_info->flags & FLAG_NO_SETINT)) {
+		tmp = usb_set_interface (dev->udev, alt->desc.bInterfaceNumber,
+				alt->desc.bAlternateSetting);
+		if (tmp < 0)
+			return tmp;
+	}
+	
+	dev->in = usb_rcvbulkpipe (dev->udev,
+			in->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
+	dev->out = usb_sndbulkpipe (dev->udev,
+			out->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
+	dev->status = status;
+	return 0;
+}
+
+static void intr_complete (struct urb *urb, struct pt_regs *regs);
+
+static int init_status (struct usbnet *dev, struct usb_interface *intf)
+{
+	char		*buf = NULL;
+	unsigned	pipe = 0;
+	unsigned	maxp;
+	unsigned	period;
+
+	if (!dev->driver_info->status)
+		return 0;
+
+	pipe = usb_rcvintpipe (dev->udev,
+			dev->status->desc.bEndpointAddress
+				& USB_ENDPOINT_NUMBER_MASK);
+	maxp = usb_maxpacket (dev->udev, pipe, 0);
+
+	/* avoid 1 msec chatter:  min 8 msec poll rate */
+	period = max ((int) dev->status->desc.bInterval,
+		(dev->udev->speed == USB_SPEED_HIGH) ? 7 : 3);
+
+	buf = kmalloc (maxp, SLAB_KERNEL);
+	if (buf) {
+		dev->interrupt = usb_alloc_urb (0, SLAB_KERNEL);
+		if (!dev->interrupt) {
+			kfree (buf);
+			return -ENOMEM;
+		} else {
+			usb_fill_int_urb(dev->interrupt, dev->udev, pipe,
+				buf, maxp, intr_complete, dev, period);
+			dev_dbg(&intf->dev,
+				"status ep%din, %d bytes period %d\n",
+				usb_pipeendpoint(pipe), maxp, period);
+		}
+	}
+	return  0;
+}
+
+static void skb_return (struct usbnet *dev, struct sk_buff *skb)
+{
+	int	status;
+
+	skb->dev = dev->net;
+	skb->protocol = eth_type_trans (skb, dev->net);
+	dev->stats.rx_packets++;
+	dev->stats.rx_bytes += skb->len;
+
+	if (netif_msg_rx_status (dev))
+		devdbg (dev, "< rx, len %d, type 0x%x",
+			skb->len + sizeof (struct ethhdr), skb->protocol);
+	memset (skb->cb, 0, sizeof (struct skb_data));
+	status = netif_rx (skb);
+	if (status != NET_RX_SUCCESS && netif_msg_rx_err (dev))
+		devdbg (dev, "netif_rx status %d", status);
+}
+
+
+#ifdef	CONFIG_USB_ALI_M5632
+#define	HAVE_HARDWARE
+
+/*-------------------------------------------------------------------------
+ *
+ * ALi M5632 driver ... does high speed
+ *
+ *-------------------------------------------------------------------------*/
+
+static const struct driver_info	ali_m5632_info = {
+	.description =	"ALi M5632",
+};
+
+
+#endif
+
+
+#ifdef	CONFIG_USB_AN2720
+#define	HAVE_HARDWARE
+
+/*-------------------------------------------------------------------------
+ *
+ * AnchorChips 2720 driver ... http://www.cypress.com
+ *
+ * This doesn't seem to have a way to detect whether the peer is
+ * connected, or need any reset handshaking.  It's got pretty big
+ * internal buffers (handles most of a frame's worth of data).
+ * Chip data sheets don't describe any vendor control messages.
+ *
+ *-------------------------------------------------------------------------*/
+
+static const struct driver_info	an2720_info = {
+	.description =	"AnchorChips/Cypress 2720",
+	// no reset available!
+	// no check_connect available!
+
+	.in = 2, .out = 2,		// direction distinguishes these
+};
+
+#endif	/* CONFIG_USB_AN2720 */
+
+
+#ifdef CONFIG_USB_AX8817X
+/* ASIX AX8817X based USB 2.0 Ethernet Devices */
+
+#define HAVE_HARDWARE
+#define NEED_MII
+
+#include <linux/crc32.h>
+
+#define AX_CMD_SET_SW_MII		0x06
+#define AX_CMD_READ_MII_REG		0x07
+#define AX_CMD_WRITE_MII_REG		0x08
+#define AX_CMD_SET_HW_MII		0x0a
+#define AX_CMD_READ_EEPROM		0x0b
+#define AX_CMD_WRITE_EEPROM		0x0c
+#define AX_CMD_WRITE_ENABLE		0x0d
+#define AX_CMD_WRITE_DISABLE		0x0e
+#define AX_CMD_WRITE_RX_CTL		0x10
+#define AX_CMD_READ_IPG012		0x11
+#define AX_CMD_WRITE_IPG0		0x12
+#define AX_CMD_WRITE_IPG1		0x13
+#define AX_CMD_WRITE_IPG2		0x14
+#define AX_CMD_WRITE_MULTI_FILTER	0x16
+#define AX_CMD_READ_NODE_ID		0x17
+#define AX_CMD_READ_PHY_ID		0x19
+#define AX_CMD_WRITE_MEDIUM_MODE	0x1b
+#define AX_CMD_READ_MONITOR_MODE	0x1c
+#define AX_CMD_WRITE_MONITOR_MODE	0x1d
+#define AX_CMD_WRITE_GPIOS		0x1f
+#define AX_CMD_SW_RESET			0x20
+#define AX_CMD_SW_PHY_STATUS		0x21
+#define AX_CMD_SW_PHY_SELECT		0x22
+#define AX88772_CMD_READ_NODE_ID	0x13
+
+#define AX_MONITOR_MODE			0x01
+#define AX_MONITOR_LINK			0x02
+#define AX_MONITOR_MAGIC		0x04
+#define AX_MONITOR_HSFS			0x10
+
+#define AX_MCAST_FILTER_SIZE		8
+#define AX_MAX_MCAST			64
+
+#define AX_INTERRUPT_BUFSIZE		8
+
+#define AX_EEPROM_LEN			0x40
+
+#define AX_SWRESET_CLEAR		0x00
+#define AX_SWRESET_RR			0x01
+#define AX_SWRESET_RT			0x02
+#define AX_SWRESET_PRTE			0x04
+#define AX_SWRESET_PRL			0x08
+#define AX_SWRESET_BZ			0x10
+#define AX_SWRESET_IPRL			0x20
+#define AX_SWRESET_IPPD			0x40
+
+#define AX88772_IPG0_DEFAULT		0x15
+#define AX88772_IPG1_DEFAULT		0x0c
+#define AX88772_IPG2_DEFAULT		0x12
+
+#define AX_EEPROM_MAGIC			0xdeadbeef
+
+/* This structure cannot exceed sizeof(unsigned long [5]) AKA 20 bytes */
+struct ax8817x_data {
+	u8 multi_filter[AX_MCAST_FILTER_SIZE];
+	struct urb *int_urb;
+	u8 *int_buf;
+};
+
+static int ax8817x_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
+			    u16 size, void *data)
+{
+	return usb_control_msg(
+		dev->udev,
+		usb_rcvctrlpipe(dev->udev, 0),
+		cmd,
+		USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+		value,
+		index,
+		data,
+		size,
+		CONTROL_TIMEOUT_MS);
+}
+
+static int ax8817x_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
+			     u16 size, void *data)
+{
+	return usb_control_msg(
+		dev->udev,
+		usb_sndctrlpipe(dev->udev, 0),
+		cmd,
+		USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+		value,
+		index,
+		data,
+		size,
+		CONTROL_TIMEOUT_MS);
+}
+
+static void ax8817x_async_cmd_callback(struct urb *urb, struct pt_regs *regs)
+{
+	struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
+
+	if (urb->status < 0)
+		printk(KERN_DEBUG "ax8817x_async_cmd_callback() failed with %d",
+			urb->status);
+
+	kfree(req);
+	usb_free_urb(urb);
+}
+
+static void ax8817x_interrupt_complete(struct urb *urb, struct pt_regs *regs)
+{
+	struct usbnet *dev = (struct usbnet *)urb->context;
+	struct ax8817x_data *data = (struct ax8817x_data *)&dev->data;
+	int link;
+
+	if (urb->status < 0) {
+		devdbg(dev,"ax8817x_interrupt_complete() failed with %d",
+			urb->status);
+	} else {
+		link = data->int_buf[2] & 0x01;
+		if (netif_carrier_ok(dev->net) != link) {
+			if (link)
+				netif_carrier_on(dev->net);
+			else
+				netif_carrier_off(dev->net);
+			devdbg(dev, "ax8817x - Link Status is: %d", link);
+		}
+		usb_submit_urb(data->int_urb, GFP_ATOMIC);
+	}
+}
+
+static void ax8817x_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
+				    u16 size, void *data)
+{
+	struct usb_ctrlrequest *req;
+	int status;
+	struct urb *urb;
+
+	if ((urb = usb_alloc_urb(0, GFP_ATOMIC)) == NULL) {
+		devdbg(dev, "Error allocating URB in write_cmd_async!");
+		return;
+	}
+
+	if ((req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC)) == NULL) {
+		deverr(dev, "Failed to allocate memory for control request");
+		usb_free_urb(urb);
+		return;
+	}
+
+	req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
+	req->bRequest = cmd;
+	req->wValue = cpu_to_le16(value);
+	req->wIndex = cpu_to_le16(index); 
+	req->wLength = cpu_to_le16(size);
+
+	usb_fill_control_urb(urb, dev->udev,
+			     usb_sndctrlpipe(dev->udev, 0),
+			     (void *)req, data, size,
+			     ax8817x_async_cmd_callback, req);
+
+	if((status = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
+		deverr(dev, "Error submitting the control message: status=%d", status);
+		kfree(req);
+		usb_free_urb(urb);
+	}
+}
+
+static void ax8817x_set_multicast(struct net_device *net)
+{
+	struct usbnet *dev = netdev_priv(net);
+	struct ax8817x_data *data = (struct ax8817x_data *)&dev->data;
+	u8 rx_ctl = 0x8c;
+
+	if (net->flags & IFF_PROMISC) {
+		rx_ctl |= 0x01;
+	} else if (net->flags & IFF_ALLMULTI
+		   || net->mc_count > AX_MAX_MCAST) {
+		rx_ctl |= 0x02;
+	} else if (net->mc_count == 0) {
+		/* just broadcast and directed */
+	} else {
+		/* We use the 20 byte dev->data
+		 * for our 8 byte filter buffer
+		 * to avoid allocating memory that
+		 * is tricky to free later */
+		struct dev_mc_list *mc_list = net->mc_list;
+		u32 crc_bits;
+		int i;
+
+		memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
+
+		/* Build the multicast hash filter. */
+		for (i = 0; i < net->mc_count; i++) {
+			crc_bits =
+			    ether_crc(ETH_ALEN,
+				      mc_list->dmi_addr) >> 26;
+			data->multi_filter[crc_bits >> 3] |=
+			    1 << (crc_bits & 7);
+			mc_list = mc_list->next;
+		}
+
+		ax8817x_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
+				   AX_MCAST_FILTER_SIZE, data->multi_filter);
+
+		rx_ctl |= 0x10;
+	}
+
+	ax8817x_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
+}
+
+static int ax8817x_mdio_read(struct net_device *netdev, int phy_id, int loc)
+{
+	struct usbnet *dev = netdev_priv(netdev);
+	u16 res;
+	u8 buf[1];
+
+	ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, &buf);
+	ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id, (__u16)loc, 2, (u16 *)&res);
+	ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf);
+
+	return res & 0xffff;
+}
+
+static void ax8817x_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
+{
+	struct usbnet *dev = netdev_priv(netdev);
+	u16 res = val;
+	u8 buf[1];
+
+	ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, &buf);
+	ax8817x_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, (u16 *)&res);
+	ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf);
+}
+
+static void ax8817x_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
+{
+	struct usbnet *dev = netdev_priv(net);
+	u8 opt;
+
+	if (ax8817x_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {
+		wolinfo->supported = 0;
+		wolinfo->wolopts = 0;
+		return;
+	}
+	wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
+	wolinfo->wolopts = 0;
+	if (opt & AX_MONITOR_MODE) {
+		if (opt & AX_MONITOR_LINK)
+			wolinfo->wolopts |= WAKE_PHY;
+		if (opt & AX_MONITOR_MAGIC)
+			wolinfo->wolopts |= WAKE_MAGIC;
+	}
+}
+
+static int ax8817x_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
+{
+	struct usbnet *dev = netdev_priv(net);
+	u8 opt = 0;
+	u8 buf[1];
+
+	if (wolinfo->wolopts & WAKE_PHY)
+		opt |= AX_MONITOR_LINK;
+	if (wolinfo->wolopts & WAKE_MAGIC)
+		opt |= AX_MONITOR_MAGIC;
+	if (opt != 0)
+		opt |= AX_MONITOR_MODE;
+
+	if (ax8817x_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
+			      opt, 0, 0, &buf) < 0)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int ax8817x_get_eeprom_len(struct net_device *net)
+{
+	return AX_EEPROM_LEN;
+}
+
+static int ax8817x_get_eeprom(struct net_device *net,
+			      struct ethtool_eeprom *eeprom, u8 *data)
+{
+	struct usbnet *dev = netdev_priv(net);
+	u16 *ebuf = (u16 *)data;
+	int i;
+
+	/* Crude hack to ensure that we don't overwrite memory
+	 * if an odd length is supplied
+	 */
+	if (eeprom->len % 2)
+		return -EINVAL;
+
+	eeprom->magic = AX_EEPROM_MAGIC;
+
+	/* ax8817x returns 2 bytes from eeprom on read */
+	for (i=0; i < eeprom->len / 2; i++) {
+		if (ax8817x_read_cmd(dev, AX_CMD_READ_EEPROM, 
+			eeprom->offset + i, 0, 2, &ebuf[i]) < 0)
+			return -EINVAL;
+	}
+	return 0;
+}
+
+static void ax8817x_get_drvinfo (struct net_device *net,
+				 struct ethtool_drvinfo *info)
+{
+	/* Inherit standard device info */
+	usbnet_get_drvinfo(net, info);
+	info->eedump_len = 0x3e;
+}
+
+static int ax8817x_get_settings(struct net_device *net, struct ethtool_cmd *cmd)
+{
+	struct usbnet *dev = netdev_priv(net);
+
+	return mii_ethtool_gset(&dev->mii,cmd);
+}
+
+static int ax8817x_set_settings(struct net_device *net, struct ethtool_cmd *cmd)
+{
+	struct usbnet *dev = netdev_priv(net);
+
+	return mii_ethtool_sset(&dev->mii,cmd);
+}
+
+/* We need to override some ethtool_ops so we require our
+   own structure so we don't interfere with other usbnet
+   devices that may be connected at the same time. */
+static struct ethtool_ops ax8817x_ethtool_ops = {
+	.get_drvinfo		= ax8817x_get_drvinfo,
+	.get_link		= ethtool_op_get_link,
+	.get_msglevel		= usbnet_get_msglevel,
+	.set_msglevel		= usbnet_set_msglevel,
+	.get_wol		= ax8817x_get_wol,
+	.set_wol		= ax8817x_set_wol,
+	.get_eeprom_len		= ax8817x_get_eeprom_len,
+	.get_eeprom		= ax8817x_get_eeprom,
+	.get_settings		= ax8817x_get_settings,
+	.set_settings		= ax8817x_set_settings,
+};
+
+static int ax8817x_bind(struct usbnet *dev, struct usb_interface *intf)
+{
+	int ret = 0;
+	void *buf;
+	int i;
+	unsigned long gpio_bits = dev->driver_info->data;
+	struct ax8817x_data *data = (struct ax8817x_data *)dev->data;
+
+	get_endpoints(dev,intf);
+
+	if ((data->int_urb = usb_alloc_urb (0, GFP_KERNEL)) == NULL) {
+		dbg ("%s: cannot allocate interrupt URB",
+			dev->net->name);
+		ret = -ENOMEM;
+		goto out1;
+	}
+	
+	if ((data->int_buf = kmalloc(AX_INTERRUPT_BUFSIZE, GFP_KERNEL)) == NULL) {
+		dbg ("%s: cannot allocate memory for interrupt buffer",
+			dev->net->name);
+		ret = -ENOMEM;
+		goto out1;
+	}
+	memset(data->int_buf, 0, AX_INTERRUPT_BUFSIZE);
+
+	usb_fill_int_urb (data->int_urb, dev->udev,
+		usb_rcvintpipe (dev->udev, 1),
+		data->int_buf, AX_INTERRUPT_BUFSIZE,
+		ax8817x_interrupt_complete, dev,
+		dev->udev->speed == USB_SPEED_HIGH ? 8 : 100);
+
+	buf = kmalloc(ETH_ALEN, GFP_KERNEL);
+	if(!buf) {
+		ret = -ENOMEM;
+		goto out2;
+	}
+
+	/* Toggle the GPIOs in a manufacturer/model specific way */
+	for (i = 2; i >= 0; i--) {
+		if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
+					(gpio_bits >> (i * 8)) & 0xff, 0, 0,
+					buf)) < 0)
+			goto out3;
+		msleep(5);
+	}
+
+	if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x80, 0, 0, buf)) < 0) {
+		dbg("send AX_CMD_WRITE_RX_CTL failed: %d", ret);
+		goto out3;
+	}
+
+	/* Get the MAC address */
+	memset(buf, 0, ETH_ALEN);
+	if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_NODE_ID, 0, 0, 6, buf)) < 0) {
+		dbg("read AX_CMD_READ_NODE_ID failed: %d", ret);
+		goto out3;
+	}
+	memcpy(dev->net->dev_addr, buf, ETH_ALEN);
+
+	/* Get the PHY id */
+	if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf)) < 0) {
+		dbg("error on read AX_CMD_READ_PHY_ID: %02x", ret);
+		goto out3;
+	} else if (ret < 2) {
+		/* this should always return 2 bytes */
+		dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x", ret);
+		ret = -EIO;
+		goto out3;
+	}
+
+	/* Initialize MII structure */
+	dev->mii.dev = dev->net;
+	dev->mii.mdio_read = ax8817x_mdio_read;
+	dev->mii.mdio_write = ax8817x_mdio_write;
+	dev->mii.phy_id_mask = 0x3f;
+	dev->mii.reg_num_mask = 0x1f;
+	dev->mii.phy_id = *((u8 *)buf + 1);
+
+	dev->net->set_multicast_list = ax8817x_set_multicast;
+	dev->net->ethtool_ops = &ax8817x_ethtool_ops;
+
+	ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR,
+			cpu_to_le16(BMCR_RESET));
+	ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
+			cpu_to_le16(ADVERTISE_ALL | ADVERTISE_CSMA | 0x0400));
+	mii_nway_restart(&dev->mii);
+
+	if((ret = usb_submit_urb(data->int_urb, GFP_KERNEL)) < 0) {
+		dbg("Failed to submit interrupt URB: %02x", ret);
+		goto out2;
+	}
+
+	return 0;
+out3:
+	kfree(buf);
+out2:
+	kfree(data->int_buf);
+out1:
+	usb_free_urb(data->int_urb);
+	return ret;
+}
+
+static void ax8817x_unbind(struct usbnet *dev, struct usb_interface *intf)
+{
+	struct ax8817x_data *data = (struct ax8817x_data *)dev->data;
+
+	usb_kill_urb(data->int_urb);
+	usb_free_urb(data->int_urb);
+	kfree(data->int_buf);
+}
+
+static struct ethtool_ops ax88772_ethtool_ops = {
+	.get_drvinfo		= ax8817x_get_drvinfo,
+	.get_link		= ethtool_op_get_link,
+	.get_msglevel		= usbnet_get_msglevel,
+	.set_msglevel		= usbnet_set_msglevel,
+	.get_wol		= ax8817x_get_wol,
+	.set_wol		= ax8817x_set_wol,
+	.get_eeprom_len		= ax8817x_get_eeprom_len,
+	.get_eeprom		= ax8817x_get_eeprom,
+	.get_settings		= ax8817x_get_settings,
+	.set_settings		= ax8817x_set_settings,
+};
+
+static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf)
+{
+	int ret;
+	void *buf;
+	struct ax8817x_data *data = (struct ax8817x_data *)dev->data;
+
+	get_endpoints(dev,intf);
+
+	if ((data->int_urb = usb_alloc_urb (0, GFP_KERNEL)) == 0) {
+		dbg ("Cannot allocate interrupt URB");
+		ret = -ENOMEM;
+		goto out1;
+	}
+	
+	if ((data->int_buf = kmalloc(AX_INTERRUPT_BUFSIZE, GFP_KERNEL)) == NULL) {
+		dbg ("Cannot allocate memory for interrupt buffer");
+		ret = -ENOMEM;
+		goto out1;
+	}
+	memset(data->int_buf, 0, AX_INTERRUPT_BUFSIZE);
+
+	usb_fill_int_urb (data->int_urb, dev->udev,
+		usb_rcvintpipe (dev->udev, 1),
+		data->int_buf, AX_INTERRUPT_BUFSIZE,
+		ax8817x_interrupt_complete, dev,
+		dev->udev->speed == USB_SPEED_HIGH ? 8 : 100);
+
+	buf = kmalloc(6, GFP_KERNEL);
+	if(!buf) {
+		dbg ("Cannot allocate memory for buffer");
+		ret = -ENOMEM;
+		goto out2;
+	}
+
+	if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
+				     0x00B0, 0, 0, buf)) < 0)
+		goto out3;
+
+	msleep(5);
+	if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_PHY_SELECT, 0x0001, 0, 0, buf)) < 0) {
+		dbg("Select PHY #1 failed: %d", ret);
+		goto out3;
+	}
+
+	if ((ret =
+	     ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPPD, 0, 0, buf)) < 0) {
+		dbg("Failed to power down internal PHY: %d", ret);
+		goto out3;
+	}
+
+	msleep(150);
+	if ((ret =
+	     ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_CLEAR, 0, 0, buf)) < 0) {
+		dbg("Failed to perform software reset: %d", ret);
+		goto out3;
+	}
+
+	msleep(150);
+	if ((ret =
+	     ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPRL | AX_SWRESET_PRL, 0, 0, buf)) < 0) {
+		dbg("Failed to set Internal/External PHY reset control: %d", ret);
+		goto out3;
+	}
+
+	msleep(150);
+	if ((ret =
+	     ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x0000, 0, 0,
+			       buf)) < 0) {
+		dbg("Failed to reset RX_CTL: %d", ret);
+		goto out3;
+	}
+
+	/* Get the MAC address */
+	memset(buf, 0, ETH_ALEN);
+	if ((ret = ax8817x_read_cmd(dev, AX88772_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, buf)) < 0) {
+		dbg("Failed to read MAC address: %d", ret);
+		goto out3;
+	}
+	memcpy(dev->net->dev_addr, buf, ETH_ALEN);
+
+	if ((ret = ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, buf)) < 0) {
+		dbg("Enabling software MII failed: %d", ret);
+		goto out3;
+	}
+
+	if (((ret =
+	      ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG, 0x0010, 2, 2, buf)) < 0)
+	    || (*((u16 *)buf) != 0x003b)) {
+		dbg("Read PHY register 2 must be 0x3b00: %d", ret);
+		goto out3;
+	}
+
+	/* Initialize MII structure */
+	dev->mii.dev = dev->net;
+	dev->mii.mdio_read = ax8817x_mdio_read;
+	dev->mii.mdio_write = ax8817x_mdio_write;
+	dev->mii.phy_id_mask = 0xff;
+	dev->mii.reg_num_mask = 0xff;
+
+	/* Get the PHY id */
+	if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf)) < 0) {
+		dbg("Error reading PHY ID: %02x", ret);
+		goto out3;
+	} else if (ret < 2) {
+		/* this should always return 2 bytes */
+		dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x",
+		    ret);
+		ret = -EIO;
+		goto out3;
+	}
+	dev->mii.phy_id = *((u8 *)buf + 1);
+
+	if ((ret =
+	     ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_PRL, 0, 0, buf)) < 0) {
+		dbg("Set external PHY reset pin level: %d", ret);
+		goto out3;
+	}
+	msleep(150);
+	if ((ret =
+	     ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPRL | AX_SWRESET_PRL, 0, 0, buf)) < 0) {
+		dbg("Set Internal/External PHY reset control: %d", ret);
+		goto out3;
+	}
+	msleep(150);
+
+
+	dev->net->set_multicast_list = ax8817x_set_multicast;
+	dev->net->ethtool_ops = &ax88772_ethtool_ops;
+
+	ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR,
+			cpu_to_le16(BMCR_RESET));
+	ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
+			cpu_to_le16(ADVERTISE_ALL | ADVERTISE_CSMA));
+	mii_nway_restart(&dev->mii);
+
+	if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, 0x0336, 0, 0, buf)) < 0) {
+		dbg("Write medium mode register: %d", ret);
+		goto out3;
+	}
+
+	if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_IPG0, AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,AX88772_IPG2_DEFAULT, 0, buf)) < 0) {
+		dbg("Write IPG,IPG1,IPG2 failed: %d", ret);
+		goto out3;
+	}
+	if ((ret =
+	     ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf)) < 0) {
+		dbg("Failed to set hardware MII: %02x", ret);
+		goto out3;
+	}
+
+	/* Set RX_CTL to default values with 2k buffer, and enable cactus */
+	if ((ret =
+	     ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x0088, 0, 0,
+			       buf)) < 0) {
+		dbg("Reset RX_CTL failed: %d", ret);
+		goto out3;
+	}
+
+	if((ret = usb_submit_urb(data->int_urb, GFP_KERNEL)) < 0) {
+		dbg("Failed to submit interrupt URB: %02x", ret);
+		goto out3;
+	}
+
+	kfree(buf);
+
+	return 0;
+
+out3:
+	kfree(buf);
+out2:
+	kfree(data->int_buf);
+out1:
+	usb_free_urb(data->int_urb);
+
+	return ret;
+}
+
+static int ax88772_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
+{
+	u32 *header;
+	char *packet;
+	struct sk_buff *ax_skb;
+	u16 size;
+
+	header = (u32 *) skb->data;
+	le32_to_cpus(header);
+	packet = (char *)(header + 1);
+
+	skb_pull(skb, 4);
+
+	while (skb->len > 0) {
+		if ((short)(*header & 0x0000ffff) !=
+		    ~((short)((*header & 0xffff0000) >> 16))) {
+			devdbg(dev,"header length data is error");
+		}
+		/* get the packet length */
+		size = (u16) (*header & 0x0000ffff);
+
+		if ((skb->len) - ((size + 1) & 0xfffe) == 0)
+			return 2;
+		if (size > ETH_FRAME_LEN) {
+			devdbg(dev,"invalid rx length %d", size);
+			return 0;
+		}
+		ax_skb = skb_clone(skb, GFP_ATOMIC);
+		if (ax_skb) {
+			ax_skb->len = size;
+			ax_skb->data = packet;
+			ax_skb->tail = packet + size;
+			skb_return(dev, ax_skb);
+		} else {
+			return 0;
+		}
+
+		skb_pull(skb, (size + 1) & 0xfffe);
+
+		if (skb->len == 0)
+			break;
+
+		header = (u32 *) skb->data;
+		le32_to_cpus(header);
+		packet = (char *)(header + 1);
+		skb_pull(skb, 4);
+	}
+
+	if (skb->len < 0) {
+		devdbg(dev,"invalid rx length %d", skb->len);
+		return 0;
+	}
+	return 1;
+}
+
+static struct sk_buff *ax88772_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
+					int flags)
+{
+	int padlen;
+	int headroom = skb_headroom(skb);
+	int tailroom = skb_tailroom(skb);
+	u32 *packet_len;
+	u32 *padbytes_ptr;
+
+	padlen = ((skb->len + 4) % 512) ? 0 : 4;
+
+	if ((!skb_cloned(skb))
+	    && ((headroom + tailroom) >= (4 + padlen))) {
+		if ((headroom < 4) || (tailroom < padlen)) {
+			skb->data = memmove(skb->head + 4, skb->data, skb->len);
+			skb->tail = skb->data + skb->len;
+		}
+	} else {
+		struct sk_buff *skb2;
+		skb2 = skb_copy_expand(skb, 4, padlen, flags);
+		dev_kfree_skb_any(skb);
+		skb = skb2;
+		if (!skb)
+			return NULL;
+	}
+
+	packet_len = (u32 *) skb_push(skb, 4);
+
+	packet_len = (u32 *) skb->data;
+	*packet_len = (((skb->len - 4) ^ 0x0000ffff) << 16) + (skb->len - 4);
+
+	if ((skb->len % 512) == 0) {
+		padbytes_ptr = (u32 *) skb->tail;
+		*padbytes_ptr = 0xffff0000;
+		skb_put(skb, padlen);
+	}
+	return skb;
+}
+
+static const struct driver_info ax8817x_info = {
+	.description = "ASIX AX8817x USB 2.0 Ethernet",
+	.bind = ax8817x_bind,
+	.unbind = ax8817x_unbind,
+	.flags =  FLAG_ETHER,
+	.data = 0x00130103,
+};
+
+static const struct driver_info dlink_dub_e100_info = {
+	.description = "DLink DUB-E100 USB Ethernet",
+	.bind = ax8817x_bind,
+	.unbind = ax8817x_unbind,
+	.flags =  FLAG_ETHER,
+	.data = 0x009f9d9f,
+};
+
+static const struct driver_info netgear_fa120_info = {
+	.description = "Netgear FA-120 USB Ethernet",
+	.bind = ax8817x_bind,
+	.unbind = ax8817x_unbind,
+	.flags =  FLAG_ETHER,
+	.data = 0x00130103,
+};
+
+static const struct driver_info hawking_uf200_info = {
+	.description = "Hawking UF200 USB Ethernet",
+	.bind = ax8817x_bind,
+	.unbind = ax8817x_unbind,
+	.flags =  FLAG_ETHER,
+	.data = 0x001f1d1f,
+};
+
+static const struct driver_info ax88772_info = {
+	.description = "ASIX AX88772 USB 2.0 Ethernet",
+	.bind = ax88772_bind,
+	.unbind = ax8817x_unbind,
+	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
+	.rx_fixup = ax88772_rx_fixup,
+	.tx_fixup = ax88772_tx_fixup,
+	.data = 0x00130103,
+};
+
+#endif /* CONFIG_USB_AX8817X */
+
+
+
+#ifdef	CONFIG_USB_BELKIN
+#define	HAVE_HARDWARE
+
+/*-------------------------------------------------------------------------
+ *
+ * Belkin F5U104 ... two NetChip 2280 devices + Atmel microcontroller
+ *
+ * ... also two eTEK designs, including one sold as "Advance USBNET"
+ *
+ *-------------------------------------------------------------------------*/
+
+static const struct driver_info	belkin_info = {
+	.description =	"Belkin, eTEK, or compatible",
+};
+
+#endif	/* CONFIG_USB_BELKIN */
+
+
+
+/*-------------------------------------------------------------------------
+ *
+ * Communications Device Class declarations.
+ * Used by CDC Ethernet, and some CDC variants
+ *
+ *-------------------------------------------------------------------------*/
+
+#ifdef	CONFIG_USB_CDCETHER
+#define NEED_GENERIC_CDC
+#endif
+
+#ifdef	CONFIG_USB_ZAURUS
+/* Ethernet variant uses funky framing, broken ethernet addressing */
+#define NEED_GENERIC_CDC
+#endif
+
+#ifdef	CONFIG_USB_RNDIS
+/* ACM variant uses even funkier framing, complex control RPC scheme */
+#define NEED_GENERIC_CDC
+#endif
+
+
+#ifdef	NEED_GENERIC_CDC
+
+#include <linux/usb_cdc.h>
+
+struct cdc_state {
+	struct usb_cdc_header_desc	*header;
+	struct usb_cdc_union_desc	*u;
+	struct usb_cdc_ether_desc	*ether;
+	struct usb_interface		*control;
+	struct usb_interface		*data;
+};
+
+static struct usb_driver usbnet_driver;
+
+/*
+ * probes control interface, claims data interface, collects the bulk
+ * endpoints, activates data interface (if needed), maybe sets MTU.
+ * all pure cdc, except for certain firmware workarounds.
+ */
+static int generic_cdc_bind (struct usbnet *dev, struct usb_interface *intf)
+{
+	u8				*buf = intf->cur_altsetting->extra;
+	int				len = intf->cur_altsetting->extralen;
+	struct usb_interface_descriptor	*d;
+	struct cdc_state		*info = (void *) &dev->data;
+	int				status;
+	int				rndis;
+
+	if (sizeof dev->data < sizeof *info)
+		return -EDOM;
+
+	/* expect strict spec conformance for the descriptors, but
+	 * cope with firmware which stores them in the wrong place
+	 */
+	if (len == 0 && dev->udev->actconfig->extralen) {
+		/* Motorola SB4100 (and others: Brad Hards says it's
+		 * from a Broadcom design) put CDC descriptors here
+		 */
+		buf = dev->udev->actconfig->extra;
+		len = dev->udev->actconfig->extralen;
+		if (len)
+			dev_dbg (&intf->dev,
+				"CDC descriptors on config\n");
+	}
+
+	/* this assumes that if there's a non-RNDIS vendor variant
+	 * of cdc-acm, it'll fail RNDIS requests cleanly.
+	 */
+	rndis = (intf->cur_altsetting->desc.bInterfaceProtocol == 0xff);
+
+	memset (info, 0, sizeof *info);
+	info->control = intf;
+	while (len > 3) {
+		if (buf [1] != USB_DT_CS_INTERFACE)
+			goto next_desc;
+
+		/* use bDescriptorSubType to identify the CDC descriptors.
+		 * We expect devices with CDC header and union descriptors.
+		 * For CDC Ethernet we need the ethernet descriptor.
+		 * For RNDIS, ignore two (pointless) CDC modem descriptors
+		 * in favor of a complicated OID-based RPC scheme doing what
+		 * CDC Ethernet achieves with a simple descriptor.
+		 */
+		switch (buf [2]) {
+		case USB_CDC_HEADER_TYPE:
+			if (info->header) {
+				dev_dbg (&intf->dev, "extra CDC header\n");
+				goto bad_desc;
+			}
+			info->header = (void *) buf;
+			if (info->header->bLength != sizeof *info->header) {
+				dev_dbg (&intf->dev, "CDC header len %u\n",
+					info->header->bLength);
+				goto bad_desc;
+			}
+			break;
+		case USB_CDC_UNION_TYPE:
+			if (info->u) {
+				dev_dbg (&intf->dev, "extra CDC union\n");
+				goto bad_desc;
+			}
+			info->u = (void *) buf;
+			if (info->u->bLength != sizeof *info->u) {
+				dev_dbg (&intf->dev, "CDC union len %u\n",
+					info->u->bLength);
+				goto bad_desc;
+			}
+
+			/* we need a master/control interface (what we're
+			 * probed with) and a slave/data interface; union
+			 * descriptors sort this all out.
+			 */
+			info->control = usb_ifnum_to_if(dev->udev,
+						info->u->bMasterInterface0);
+			info->data = usb_ifnum_to_if(dev->udev,
+						info->u->bSlaveInterface0);
+			if (!info->control || !info->data) {
+				dev_dbg (&intf->dev,
+					"master #%u/%p slave #%u/%p\n",
+					info->u->bMasterInterface0,
+					info->control,
+					info->u->bSlaveInterface0,
+					info->data);
+				goto bad_desc;
+			}
+			if (info->control != intf) {
+				dev_dbg (&intf->dev, "bogus CDC Union\n");
+				/* Ambit USB Cable Modem (and maybe others)
+				 * interchanges master and slave interface.
+				 */
+				if (info->data == intf) {
+					info->data = info->control;
+					info->control = intf;
+				} else
+					goto bad_desc;
+			}
+
+			/* a data interface altsetting does the real i/o */
+			d = &info->data->cur_altsetting->desc;
+			if (d->bInterfaceClass != USB_CLASS_CDC_DATA) {
+				dev_dbg (&intf->dev, "slave class %u\n",
+					d->bInterfaceClass);
+				goto bad_desc;
+			}
+			break;
+		case USB_CDC_ETHERNET_TYPE:
+			if (info->ether) {
+				dev_dbg (&intf->dev, "extra CDC ether\n");
+				goto bad_desc;
+			}
+			info->ether = (void *) buf;
+			if (info->ether->bLength != sizeof *info->ether) {
+				dev_dbg (&intf->dev, "CDC ether len %u\n",
+					info->u->bLength);
+				goto bad_desc;
+			}
+			dev->net->mtu = le16_to_cpup (
+						&info->ether->wMaxSegmentSize)
+					- ETH_HLEN;
+			/* because of Zaurus, we may be ignoring the host
+			 * side link address we were given.
+			 */
+			break;
+		}
+next_desc:
+		len -= buf [0];	/* bLength */
+		buf += buf [0];
+	}
+
+	if (!info->header || !info->u || (!rndis && !info->ether)) {
+		dev_dbg (&intf->dev, "missing cdc %s%s%sdescriptor\n",
+			info->header ? "" : "header ",
+			info->u ? "" : "union ",
+			info->ether ? "" : "ether ");
+		goto bad_desc;
+	}
+
+	/* claim data interface and set it up ... with side effects.
+	 * network traffic can't flow until an altsetting is enabled.
+	 */
+	status = usb_driver_claim_interface (&usbnet_driver, info->data, dev);
+	if (status < 0)
+		return status;
+	status = get_endpoints (dev, info->data);
+	if (status < 0) {
+		/* ensure immediate exit from usbnet_disconnect */
+		usb_set_intfdata(info->data, NULL);
+		usb_driver_release_interface (&usbnet_driver, info->data);
+		return status;
+	}
+
+	/* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */
+	dev->status = NULL;
+	if (info->control->cur_altsetting->desc.bNumEndpoints == 1) {
+		struct usb_endpoint_descriptor	*desc;
+
+		dev->status = &info->control->cur_altsetting->endpoint [0];
+		desc = &dev->status->desc;
+		if (desc->bmAttributes != USB_ENDPOINT_XFER_INT
+				|| !(desc->bEndpointAddress & USB_DIR_IN)
+				|| (le16_to_cpu(desc->wMaxPacketSize)
+					< sizeof (struct usb_cdc_notification))
+				|| !desc->bInterval) {
+			dev_dbg (&intf->dev, "bad notification endpoint\n");
+			dev->status = NULL;
+		}
+	}
+	if (rndis && !dev->status) {
+		dev_dbg (&intf->dev, "missing RNDIS status endpoint\n");
+		usb_set_intfdata(info->data, NULL);
+		usb_driver_release_interface (&usbnet_driver, info->data);
+		return -ENODEV;
+	}
+	return 0;
+
+bad_desc:
+	dev_info (&dev->udev->dev, "bad CDC descriptors\n");
+	return -ENODEV;
+}
+
+static void cdc_unbind (struct usbnet *dev, struct usb_interface *intf)
+{
+	struct cdc_state		*info = (void *) &dev->data;
+
+	/* disconnect master --> disconnect slave */
+	if (intf == info->control && info->data) {
+		/* ensure immediate exit from usbnet_disconnect */
+		usb_set_intfdata(info->data, NULL);
+		usb_driver_release_interface (&usbnet_driver, info->data);
+		info->data = NULL;
+	}
+
+	/* and vice versa (just in case) */
+	else if (intf == info->data && info->control) {
+		/* ensure immediate exit from usbnet_disconnect */
+		usb_set_intfdata(info->control, NULL);
+		usb_driver_release_interface (&usbnet_driver, info->control);
+		info->control = NULL;
+	}
+}
+
+
+static void dumpspeed (struct usbnet *dev, __le32 *speeds)
+{
+	if (netif_msg_timer (dev))
+		devinfo (dev, "link speeds: %u kbps up, %u kbps down",
+			__le32_to_cpu(speeds[0]) / 1000,
+		__le32_to_cpu(speeds[1]) / 1000);
+}
+
+static void cdc_status (struct usbnet *dev, struct urb *urb)
+{
+	struct usb_cdc_notification	*event;
+
+	if (urb->actual_length < sizeof *event)
+		return;
+	
+	/* SPEED_CHANGE can get split into two 8-byte packets */
+	if (test_and_clear_bit (EVENT_STS_SPLIT, &dev->flags)) {
+		dumpspeed (dev, (__le32 *) urb->transfer_buffer);
+		return;
+	}
+
+	event = urb->transfer_buffer;
+	switch (event->bNotificationType) {
+	case USB_CDC_NOTIFY_NETWORK_CONNECTION:
+		if (netif_msg_timer (dev))
+			devdbg (dev, "CDC: carrier %s",
+					event->wValue ? "on" : "off");
+		if (event->wValue)
+			netif_carrier_on(dev->net);
+		else
+			netif_carrier_off(dev->net);
+		break;
+	case USB_CDC_NOTIFY_SPEED_CHANGE:	/* tx/rx rates */
+		if (netif_msg_timer (dev))
+			devdbg (dev, "CDC: speed change (len %d)",
+					urb->actual_length);
+		if (urb->actual_length != (sizeof *event + 8))
+			set_bit (EVENT_STS_SPLIT, &dev->flags);
+		else
+			dumpspeed (dev, (__le32 *) &event[1]);
+		break;
+	// case USB_CDC_NOTIFY_RESPONSE_AVAILABLE:	/* RNDIS; or unsolicited */
+	default:
+		deverr (dev, "CDC: unexpected notification %02x!",
+				 event->bNotificationType);
+		break;
+	}
+}
+
+#endif	/* NEED_GENERIC_CDC */
+
+
+#ifdef	CONFIG_USB_CDCETHER
+#define	HAVE_HARDWARE
+
+/*-------------------------------------------------------------------------
+ *
+ * Communications Device Class, Ethernet Control model
+ * 
+ * Takes two interfaces.  The DATA interface is inactive till an altsetting
+ * is selected.  Configuration data includes class descriptors.
+ *
+ * This should interop with whatever the 2.4 "CDCEther.c" driver
+ * (by Brad Hards) talked with.
+ *
+ *-------------------------------------------------------------------------*/
+
+#include <linux/ctype.h>
+
+static u8 nibble (unsigned char c)
+{
+	if (likely (isdigit (c)))
+		return c - '0';
+	c = toupper (c);
+	if (likely (isxdigit (c)))
+		return 10 + c - 'A';
+	return 0;
+}
+
+static inline int
+get_ethernet_addr (struct usbnet *dev, struct usb_cdc_ether_desc *e)
+{
+	int 		tmp, i;
+	unsigned char	buf [13];
+
+	tmp = usb_string (dev->udev, e->iMACAddress, buf, sizeof buf);
+	if (tmp != 12) {
+		dev_dbg (&dev->udev->dev,
+			"bad MAC string %d fetch, %d\n", e->iMACAddress, tmp);
+		if (tmp >= 0)
+			tmp = -EINVAL;
+		return tmp;
+	}
+	for (i = tmp = 0; i < 6; i++, tmp += 2)
+		dev->net->dev_addr [i] =
+			 (nibble (buf [tmp]) << 4) + nibble (buf [tmp + 1]);
+	return 0;
+}
+
+static int cdc_bind (struct usbnet *dev, struct usb_interface *intf)
+{
+	int				status;
+	struct cdc_state		*info = (void *) &dev->data;
+
+	status = generic_cdc_bind (dev, intf);
+	if (status < 0)
+		return status;
+
+	status = get_ethernet_addr (dev, info->ether);
+	if (status < 0) {
+		usb_set_intfdata(info->data, NULL);
+		usb_driver_release_interface (&usbnet_driver, info->data);
+		return status;
+	}
+
+	/* FIXME cdc-ether has some multicast code too, though it complains
+	 * in routine cases.  info->ether describes the multicast support.
+	 */
+	return 0;
+}
+
+static const struct driver_info	cdc_info = {
+	.description =	"CDC Ethernet Device",
+	.flags =	FLAG_ETHER,
+	// .check_connect = cdc_check_connect,
+	.bind =		cdc_bind,
+	.unbind =	cdc_unbind,
+	.status =	cdc_status,
+};
+
+#endif	/* CONFIG_USB_CDCETHER */
+
+
+
+#ifdef	CONFIG_USB_EPSON2888
+#define	HAVE_HARDWARE
+
+/*-------------------------------------------------------------------------
+ *
+ * EPSON USB clients
+ *
+ * This is the same idea as Linux PDAs (below) except the firmware in the
+ * device might not be Tux-powered.  Epson provides reference firmware that
+ * implements this interface.  Product developers can reuse or modify that
+ * code, such as by using their own product and vendor codes.
+ *
+ * Support was from Juro Bystricky <bystricky.juro@erd.epson.com>
+ *
+ *-------------------------------------------------------------------------*/
+
+static const struct driver_info	epson2888_info = {
+	.description =	"Epson USB Device",
+	.check_connect = always_connected,
+
+	.in = 4, .out = 3,
+};
+
+#endif	/* CONFIG_USB_EPSON2888 */
+
+
+#ifdef CONFIG_USB_GENESYS
+#define	HAVE_HARDWARE
+
+/*-------------------------------------------------------------------------
+ *
+ * GeneSys GL620USB-A (www.genesyslogic.com.tw)
+ *
+ * ... should partially interop with the Win32 driver for this hardware
+ * The GeneSys docs imply there's some NDIS issue motivating this framing.
+ *
+ * Some info from GeneSys:
+ *  - GL620USB-A is full duplex; GL620USB is only half duplex for bulk.
+ *    (Some cables, like the BAFO-100c, use the half duplex version.)
+ *  - For the full duplex model, the low bit of the version code says
+ *    which side is which ("left/right").
+ *  - For the half duplex type, a control/interrupt handshake settles
+ *    the transfer direction.  (That's disabled here, partially coded.)
+ *    A control URB would block until other side writes an interrupt.
+ *
+ * Original code from Jiun-Jie Huang <huangjj@genesyslogic.com.tw>
+ * and merged into "usbnet" by Stanislav Brabec <utx@penguin.cz>.
+ *
+ *-------------------------------------------------------------------------*/
+
+// control msg write command
+#define GENELINK_CONNECT_WRITE			0xF0
+// interrupt pipe index
+#define GENELINK_INTERRUPT_PIPE			0x03
+// interrupt read buffer size
+#define INTERRUPT_BUFSIZE			0x08
+// interrupt pipe interval value
+#define GENELINK_INTERRUPT_INTERVAL		0x10
+// max transmit packet number per transmit
+#define GL_MAX_TRANSMIT_PACKETS			32
+// max packet length
+#define GL_MAX_PACKET_LEN			1514
+// max receive buffer size 
+#define GL_RCV_BUF_SIZE		\
+	(((GL_MAX_PACKET_LEN + 4) * GL_MAX_TRANSMIT_PACKETS) + 4)
+
+struct gl_packet {
+	u32		packet_length;
+	char		packet_data [1];
+};
+
+struct gl_header {
+	u32			packet_count;
+	struct gl_packet	packets;
+};
+
+#ifdef	GENELINK_ACK
+
+// FIXME:  this code is incomplete, not debugged; it doesn't
+// handle interrupts correctly.  interrupts should be generic
+// code like all other device I/O, anyway.
+
+struct gl_priv { 
+	struct urb	*irq_urb;
+	char		irq_buf [INTERRUPT_BUFSIZE];
+};
+
+static inline int gl_control_write (struct usbnet *dev, u8 request, u16 value)
+{
+	int retval;
+
+	retval = usb_control_msg (dev->udev,
+		      usb_sndctrlpipe (dev->udev, 0),
+		      request,
+		      USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+		      value, 
+		      0,			// index
+		      0,			// data buffer
+		      0,			// size
+		      CONTROL_TIMEOUT_MS);
+	return retval;
+}
+
+static void gl_interrupt_complete (struct urb *urb, struct pt_regs *regs)
+{
+	int status = urb->status;
+	
+	switch (status) {
+	case 0:
+		/* success */
+		break;
+	case -ECONNRESET:
+	case -ENOENT:
+	case -ESHUTDOWN:
+		/* this urb is terminated, clean up */
+		dbg("%s - urb shutting down with status: %d",
+				__FUNCTION__, status);
+		return;
+	default:
+		dbg("%s - nonzero urb status received: %d",
+				__FUNCTION__, urb->status);
+	}
+
+	status = usb_submit_urb (urb, GFP_ATOMIC);
+	if (status)
+		err ("%s - usb_submit_urb failed with result %d",
+		     __FUNCTION__, status);
+}
+
+static int gl_interrupt_read (struct usbnet *dev)
+{
+	struct gl_priv	*priv = dev->priv_data;
+	int		retval;
+
+	// issue usb interrupt read
+	if (priv && priv->irq_urb) {
+		// submit urb
+		if ((retval = usb_submit_urb (priv->irq_urb, GFP_KERNEL)) != 0)
+			dbg ("gl_interrupt_read: submit fail - %X...", retval);
+		else
+			dbg ("gl_interrupt_read: submit success...");
+	}
+
+	return 0;
+}
+
+// check whether another side is connected
+static int genelink_check_connect (struct usbnet *dev)
+{
+	int			retval;
+
+	dbg ("genelink_check_connect...");
+
+	// detect whether another side is connected
+	if ((retval = gl_control_write (dev, GENELINK_CONNECT_WRITE, 0)) != 0) {
+		dbg ("%s: genelink_check_connect write fail - %X",
+			dev->net->name, retval);
+		return retval;
+	}
+
+	// usb interrupt read to ack another side 
+	if ((retval = gl_interrupt_read (dev)) != 0) {
+		dbg ("%s: genelink_check_connect read fail - %X",
+			dev->net->name, retval);
+		return retval;
+	}
+
+	dbg ("%s: genelink_check_connect read success", dev->net->name);
+	return 0;
+}
+
+// allocate and initialize the private data for genelink
+static int genelink_init (struct usbnet *dev)
+{
+	struct gl_priv *priv;
+
+	// allocate the private data structure
+	if ((priv = kmalloc (sizeof *priv, GFP_KERNEL)) == 0) {
+		dbg ("%s: cannot allocate private data per device",
+			dev->net->name);
+		return -ENOMEM;
+	}
+
+	// allocate irq urb
+	if ((priv->irq_urb = usb_alloc_urb (0, GFP_KERNEL)) == 0) {
+		dbg ("%s: cannot allocate private irq urb per device",
+			dev->net->name);
+		kfree (priv);
+		return -ENOMEM;
+	}
+
+	// fill irq urb
+	usb_fill_int_urb (priv->irq_urb, dev->udev,
+		usb_rcvintpipe (dev->udev, GENELINK_INTERRUPT_PIPE),
+		priv->irq_buf, INTERRUPT_BUFSIZE,
+		gl_interrupt_complete, 0,
+		GENELINK_INTERRUPT_INTERVAL);
+
+	// set private data pointer
+	dev->priv_data = priv;
+
+	return 0;
+}
+
+// release the private data
+static int genelink_free (struct usbnet *dev)
+{
+	struct gl_priv	*priv = dev->priv_data;
+
+	if (!priv) 
+		return 0;
+
+// FIXME:  can't cancel here; it's synchronous, and
+// should have happened earlier in any case (interrupt
+// handling needs to be generic)
+
+	// cancel irq urb first
+	usb_kill_urb (priv->irq_urb);
+
+	// free irq urb
+	usb_free_urb (priv->irq_urb);
+
+	// free the private data structure
+	kfree (priv);
+
+	return 0;
+}
+
+#endif
+
+static int genelink_rx_fixup (struct usbnet *dev, struct sk_buff *skb)
+{
+	struct gl_header	*header;
+	struct gl_packet	*packet;
+	struct sk_buff		*gl_skb;
+	u32			size;
+
+	header = (struct gl_header *) skb->data;
+
+	// get the packet count of the received skb
+	le32_to_cpus (&header->packet_count);
+	if ((header->packet_count > GL_MAX_TRANSMIT_PACKETS)
+			|| (header->packet_count < 0)) {
+		dbg ("genelink: invalid received packet count %d",
+			header->packet_count);
+		return 0;
+	}
+
+	// set the current packet pointer to the first packet
+	packet = &header->packets;
+
+	// decrement the length for the packet count size 4 bytes
+	skb_pull (skb, 4);
+
+	while (header->packet_count > 1) {
+		// get the packet length
+		size = packet->packet_length;
+
+		// this may be a broken packet
+		if (size > GL_MAX_PACKET_LEN) {
+			dbg ("genelink: invalid rx length %d", size);
+			return 0;
+		}
+
+		// allocate the skb for the individual packet
+		gl_skb = alloc_skb (size, GFP_ATOMIC);
+		if (gl_skb) {
+
+			// copy the packet data to the new skb
+			memcpy(skb_put(gl_skb, size), packet->packet_data, size);
+			skb_return (dev, skb);
+		}
+
+		// advance to the next packet
+		packet = (struct gl_packet *)
+			&packet->packet_data [size];
+		header->packet_count--;
+
+		// shift the data pointer to the next gl_packet
+		skb_pull (skb, size + 4);
+	}
+
+	// skip the packet length field 4 bytes
+	skb_pull (skb, 4);
+
+	if (skb->len > GL_MAX_PACKET_LEN) {
+		dbg ("genelink: invalid rx length %d", skb->len);
+		return 0;
+	}
+	return 1;
+}
+
+static struct sk_buff *
+genelink_tx_fixup (struct usbnet *dev, struct sk_buff *skb, int flags)
+{
+	int 	padlen;
+	int	length = skb->len;
+	int	headroom = skb_headroom (skb);
+	int	tailroom = skb_tailroom (skb);
+	u32	*packet_count;
+	u32	*packet_len;
+
+	// FIXME:  magic numbers, bleech
+	padlen = ((skb->len + (4 + 4*1)) % 64) ? 0 : 1;
+
+	if ((!skb_cloned (skb))
+			&& ((headroom + tailroom) >= (padlen + (4 + 4*1)))) {
+		if ((headroom < (4 + 4*1)) || (tailroom < padlen)) {
+			skb->data = memmove (skb->head + (4 + 4*1),
+					     skb->data, skb->len);
+			skb->tail = skb->data + skb->len;
+		}
+	} else {
+		struct sk_buff	*skb2;
+		skb2 = skb_copy_expand (skb, (4 + 4*1) , padlen, flags);
+		dev_kfree_skb_any (skb);
+		skb = skb2;
+		if (!skb)
+			return NULL;
+	}
+
+	// attach the packet count to the header
+	packet_count = (u32 *) skb_push (skb, (4 + 4*1));
+	packet_len = packet_count + 1;
+
+	// FIXME little endian?
+	*packet_count = 1;
+	*packet_len = length;
+
+	// add padding byte
+	if ((skb->len % dev->maxpacket) == 0)
+		skb_put (skb, 1);
+
+	return skb;
+}
+
+static const struct driver_info	genelink_info = {
+	.description =	"Genesys GeneLink",
+	.flags =	FLAG_FRAMING_GL | FLAG_NO_SETINT,
+	.rx_fixup =	genelink_rx_fixup,
+	.tx_fixup =	genelink_tx_fixup,
+
+	.in = 1, .out = 2,
+
+#ifdef	GENELINK_ACK
+	.check_connect =genelink_check_connect,
+#endif
+};
+
+#endif /* CONFIG_USB_GENESYS */
+
+
+
+#ifdef	CONFIG_USB_NET1080
+#define	HAVE_HARDWARE
+
+/*-------------------------------------------------------------------------
+ *
+ * Netchip 1080 driver ... http://www.netchip.com
+ * Used in LapLink cables
+ *
+ *-------------------------------------------------------------------------*/
+
+#define dev_packet_id	data[0]
+#define frame_errors	data[1]
+
+/*
+ * NetChip framing of ethernet packets, supporting additional error
+ * checks for links that may drop bulk packets from inside messages.
+ * Odd USB length == always short read for last usb packet.
+ *	- nc_header
+ *	- Ethernet header (14 bytes)
+ *	- payload
+ *	- (optional padding byte, if needed so length becomes odd)
+ *	- nc_trailer
+ *
+ * This framing is to be avoided for non-NetChip devices.
+ */
+
+struct nc_header {		// packed:
+	__le16	hdr_len;		// sizeof nc_header (LE, all)
+	__le16	packet_len;		// payload size (including ethhdr)
+	__le16	packet_id;		// detects dropped packets
+#define MIN_HEADER	6
+
+	// all else is optional, and must start with:
+	// u16	vendorId;		// from usb-if
+	// u16	productId;
+} __attribute__((__packed__));
+
+#define	PAD_BYTE	((unsigned char)0xAC)
+
+struct nc_trailer {
+	__le16	packet_id;
+} __attribute__((__packed__));
+
+// packets may use FLAG_FRAMING_NC and optional pad
+#define FRAMED_SIZE(mtu) (sizeof (struct nc_header) \
+				+ sizeof (struct ethhdr) \
+				+ (mtu) \
+				+ 1 \
+				+ sizeof (struct nc_trailer))
+
+#define MIN_FRAMED	FRAMED_SIZE(0)
+
+
+/*
+ * Zero means no timeout; else, how long a 64 byte bulk packet may be queued
+ * before the hardware drops it.  If that's done, the driver will need to
+ * frame network packets to guard against the dropped USB packets.  The win32
+ * driver sets this for both sides of the link.
+ */
+#define	NC_READ_TTL_MS	((u8)255)	// ms
+
+/*
+ * We ignore most registers and EEPROM contents.
+ */
+#define	REG_USBCTL	((u8)0x04)
+#define REG_TTL		((u8)0x10)
+#define REG_STATUS	((u8)0x11)
+
+/*
+ * Vendor specific requests to read/write data
+ */
+#define	REQUEST_REGISTER	((u8)0x10)
+#define	REQUEST_EEPROM		((u8)0x11)
+
+static int
+nc_vendor_read (struct usbnet *dev, u8 req, u8 regnum, u16 *retval_ptr)
+{
+	int status = usb_control_msg (dev->udev,
+		usb_rcvctrlpipe (dev->udev, 0),
+		req,
+		USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+		0, regnum,
+		retval_ptr, sizeof *retval_ptr,
+		CONTROL_TIMEOUT_MS);
+	if (status > 0)
+		status = 0;
+	if (!status)
+		le16_to_cpus (retval_ptr);
+	return status;
+}
+
+static inline int
+nc_register_read (struct usbnet *dev, u8 regnum, u16 *retval_ptr)
+{
+	return nc_vendor_read (dev, REQUEST_REGISTER, regnum, retval_ptr);
+}
+
+// no retval ... can become async, usable in_interrupt()
+static void
+nc_vendor_write (struct usbnet *dev, u8 req, u8 regnum, u16 value)
+{
+	usb_control_msg (dev->udev,
+		usb_sndctrlpipe (dev->udev, 0),
+		req,
+		USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+		value, regnum,
+		NULL, 0,			// data is in setup packet
+		CONTROL_TIMEOUT_MS);
+}
+
+static inline void
+nc_register_write (struct usbnet *dev, u8 regnum, u16 value)
+{
+	nc_vendor_write (dev, REQUEST_REGISTER, regnum, value);
+}
+
+
+#if 0
+static void nc_dump_registers (struct usbnet *dev)
+{
+	u8	reg;
+	u16	*vp = kmalloc (sizeof (u16));
+
+	if (!vp) {
+		dbg ("no memory?");
+		return;
+	}
+
+	dbg ("%s registers:", dev->net->name);
+	for (reg = 0; reg < 0x20; reg++) {
+		int retval;
+
+		// reading some registers is trouble
+		if (reg >= 0x08 && reg <= 0xf)
+			continue;
+		if (reg >= 0x12 && reg <= 0x1e)
+			continue;
+
+		retval = nc_register_read (dev, reg, vp);
+		if (retval < 0)
+			dbg ("%s reg [0x%x] ==> error %d",
+				dev->net->name, reg, retval);
+		else
+			dbg ("%s reg [0x%x] = 0x%x",
+				dev->net->name, reg, *vp);
+	}
+	kfree (vp);
+}
+#endif
+
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * Control register
+ */
+
+#define	USBCTL_WRITABLE_MASK	0x1f0f
+// bits 15-13 reserved, r/o
+#define	USBCTL_ENABLE_LANG	(1 << 12)
+#define	USBCTL_ENABLE_MFGR	(1 << 11)
+#define	USBCTL_ENABLE_PROD	(1 << 10)
+#define	USBCTL_ENABLE_SERIAL	(1 << 9)
+#define	USBCTL_ENABLE_DEFAULTS	(1 << 8)
+// bits 7-4 reserved, r/o
+#define	USBCTL_FLUSH_OTHER	(1 << 3)
+#define	USBCTL_FLUSH_THIS	(1 << 2)
+#define	USBCTL_DISCONN_OTHER	(1 << 1)
+#define	USBCTL_DISCONN_THIS	(1 << 0)
+
+static inline void nc_dump_usbctl (struct usbnet *dev, u16 usbctl)
+{
+	if (!netif_msg_link (dev))
+		return;
+	devdbg (dev, "net1080 %s-%s usbctl 0x%x:%s%s%s%s%s;"
+			" this%s%s;"
+			" other%s%s; r/o 0x%x",
+		dev->udev->bus->bus_name, dev->udev->devpath,
+		usbctl,
+		(usbctl & USBCTL_ENABLE_LANG) ? " lang" : "",
+		(usbctl & USBCTL_ENABLE_MFGR) ? " mfgr" : "",
+		(usbctl & USBCTL_ENABLE_PROD) ? " prod" : "",
+		(usbctl & USBCTL_ENABLE_SERIAL) ? " serial" : "",
+		(usbctl & USBCTL_ENABLE_DEFAULTS) ? " defaults" : "",
+
+		(usbctl & USBCTL_FLUSH_OTHER) ? " FLUSH" : "",
+		(usbctl & USBCTL_DISCONN_OTHER) ? " DIS" : "",
+		(usbctl & USBCTL_FLUSH_THIS) ? " FLUSH" : "",
+		(usbctl & USBCTL_DISCONN_THIS) ? " DIS" : "",
+		usbctl & ~USBCTL_WRITABLE_MASK
+		);
+}
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * Status register
+ */
+
+#define	STATUS_PORT_A		(1 << 15)
+
+#define	STATUS_CONN_OTHER	(1 << 14)
+#define	STATUS_SUSPEND_OTHER	(1 << 13)
+#define	STATUS_MAILBOX_OTHER	(1 << 12)
+#define	STATUS_PACKETS_OTHER(n)	(((n) >> 8) && 0x03)
+
+#define	STATUS_CONN_THIS	(1 << 6)
+#define	STATUS_SUSPEND_THIS	(1 << 5)
+#define	STATUS_MAILBOX_THIS	(1 << 4)
+#define	STATUS_PACKETS_THIS(n)	(((n) >> 0) && 0x03)
+
+#define	STATUS_UNSPEC_MASK	0x0c8c
+#define	STATUS_NOISE_MASK 	((u16)~(0x0303|STATUS_UNSPEC_MASK))
+
+
+static inline void nc_dump_status (struct usbnet *dev, u16 status)
+{
+	if (!netif_msg_link (dev))
+		return;
+	devdbg (dev, "net1080 %s-%s status 0x%x:"
+			" this (%c) PKT=%d%s%s%s;"
+			" other PKT=%d%s%s%s; unspec 0x%x",
+		dev->udev->bus->bus_name, dev->udev->devpath,
+		status,
+
+		// XXX the packet counts don't seem right
+		// (1 at reset, not 0); maybe UNSPEC too
+
+		(status & STATUS_PORT_A) ? 'A' : 'B',
+		STATUS_PACKETS_THIS (status),
+		(status & STATUS_CONN_THIS) ? " CON" : "",
+		(status & STATUS_SUSPEND_THIS) ? " SUS" : "",
+		(status & STATUS_MAILBOX_THIS) ? " MBOX" : "",
+
+		STATUS_PACKETS_OTHER (status),
+		(status & STATUS_CONN_OTHER) ? " CON" : "",
+		(status & STATUS_SUSPEND_OTHER) ? " SUS" : "",
+		(status & STATUS_MAILBOX_OTHER) ? " MBOX" : "",
+
+		status & STATUS_UNSPEC_MASK
+		);
+}
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * TTL register
+ */
+
+#define	TTL_THIS(ttl)	(0x00ff & ttl)
+#define	TTL_OTHER(ttl)	(0x00ff & (ttl >> 8))
+#define MK_TTL(this,other)	((u16)(((other)<<8)|(0x00ff&(this))))
+
+static inline void nc_dump_ttl (struct usbnet *dev, u16 ttl)
+{
+	if (netif_msg_link (dev))
+		devdbg (dev, "net1080 %s-%s ttl 0x%x this = %d, other = %d",
+			dev->udev->bus->bus_name, dev->udev->devpath,
+			ttl, TTL_THIS (ttl), TTL_OTHER (ttl));
+}
+
+/*-------------------------------------------------------------------------*/
+
+static int net1080_reset (struct usbnet *dev)
+{
+	u16		usbctl, status, ttl;
+	u16		*vp = kmalloc (sizeof (u16), GFP_KERNEL);
+	int		retval;
+
+	if (!vp)
+		return -ENOMEM;
+
+	// nc_dump_registers (dev);
+
+	if ((retval = nc_register_read (dev, REG_STATUS, vp)) < 0) {
+		dbg ("can't read %s-%s status: %d",
+			dev->udev->bus->bus_name, dev->udev->devpath, retval);
+		goto done;
+	}
+	status = *vp;
+	nc_dump_status (dev, status);
+
+	if ((retval = nc_register_read (dev, REG_USBCTL, vp)) < 0) {
+		dbg ("can't read USBCTL, %d", retval);
+		goto done;
+	}
+	usbctl = *vp;
+	nc_dump_usbctl (dev, usbctl);
+
+	nc_register_write (dev, REG_USBCTL,
+			USBCTL_FLUSH_THIS | USBCTL_FLUSH_OTHER);
+
+	if ((retval = nc_register_read (dev, REG_TTL, vp)) < 0) {
+		dbg ("can't read TTL, %d", retval);
+		goto done;
+	}
+	ttl = *vp;
+	// nc_dump_ttl (dev, ttl);
+
+	nc_register_write (dev, REG_TTL,
+			MK_TTL (NC_READ_TTL_MS, TTL_OTHER (ttl)) );
+	dbg ("%s: assigned TTL, %d ms", dev->net->name, NC_READ_TTL_MS);
+
+	if (netif_msg_link (dev))
+		devinfo (dev, "port %c, peer %sconnected",
+			(status & STATUS_PORT_A) ? 'A' : 'B',
+			(status & STATUS_CONN_OTHER) ? "" : "dis"
+			);
+	retval = 0;
+
+done:
+	kfree (vp);
+	return retval;
+}
+
+static int net1080_check_connect (struct usbnet *dev)
+{
+	int			retval;
+	u16			status;
+	u16			*vp = kmalloc (sizeof (u16), GFP_KERNEL);
+
+	if (!vp)
+		return -ENOMEM;
+	retval = nc_register_read (dev, REG_STATUS, vp);
+	status = *vp;
+	kfree (vp);
+	if (retval != 0) {
+		dbg ("%s net1080_check_conn read - %d", dev->net->name, retval);
+		return retval;
+	}
+	if ((status & STATUS_CONN_OTHER) != STATUS_CONN_OTHER)
+		return -ENOLINK;
+	return 0;
+}
+
+static void nc_flush_complete (struct urb *urb, struct pt_regs *regs)
+{
+	kfree (urb->context);
+	usb_free_urb(urb);
+}
+
+static void nc_ensure_sync (struct usbnet *dev)
+{
+	dev->frame_errors++;
+	if (dev->frame_errors > 5) {
+		struct urb		*urb;
+		struct usb_ctrlrequest	*req;
+		int			status;
+
+		/* Send a flush */
+		urb = usb_alloc_urb (0, SLAB_ATOMIC);
+		if (!urb)
+			return;
+
+		req = kmalloc (sizeof *req, GFP_ATOMIC);
+		if (!req) {
+			usb_free_urb (urb);
+			return;
+		}
+
+		req->bRequestType = USB_DIR_OUT
+			| USB_TYPE_VENDOR
+			| USB_RECIP_DEVICE;
+		req->bRequest = REQUEST_REGISTER;
+		req->wValue = cpu_to_le16 (USBCTL_FLUSH_THIS
+				| USBCTL_FLUSH_OTHER);
+		req->wIndex = cpu_to_le16 (REG_USBCTL);
+		req->wLength = cpu_to_le16 (0);
+
+		/* queue an async control request, we don't need
+		 * to do anything when it finishes except clean up.
+		 */
+		usb_fill_control_urb (urb, dev->udev,
+			usb_sndctrlpipe (dev->udev, 0),
+			(unsigned char *) req,
+			NULL, 0,
+			nc_flush_complete, req);
+		status = usb_submit_urb (urb, GFP_ATOMIC);
+		if (status) {
+			kfree (req);
+			usb_free_urb (urb);
+			return;
+		}
+
+		if (netif_msg_rx_err (dev))
+			devdbg (dev, "flush net1080; too many framing errors");
+		dev->frame_errors = 0;
+	}
+}
+
+static int net1080_rx_fixup (struct usbnet *dev, struct sk_buff *skb)
+{
+	struct nc_header	*header;
+	struct nc_trailer	*trailer;
+	u16			hdr_len, packet_len;
+
+	if (!(skb->len & 0x01)
+			|| MIN_FRAMED > skb->len
+			|| skb->len > FRAMED_SIZE (dev->net->mtu)) {
+		dev->stats.rx_frame_errors++;
+		dbg ("rx framesize %d range %d..%d mtu %d", skb->len,
+			(int)MIN_FRAMED, (int)FRAMED_SIZE (dev->net->mtu),
+			dev->net->mtu);
+		nc_ensure_sync (dev);
+		return 0;
+	}
+
+	header = (struct nc_header *) skb->data;
+	hdr_len = le16_to_cpup (&header->hdr_len);
+	packet_len = le16_to_cpup (&header->packet_len);
+	if (FRAMED_SIZE (packet_len) > MAX_PACKET) {
+		dev->stats.rx_frame_errors++;
+		dbg ("packet too big, %d", packet_len);
+		nc_ensure_sync (dev);
+		return 0;
+	} else if (hdr_len < MIN_HEADER) {
+		dev->stats.rx_frame_errors++;
+		dbg ("header too short, %d", hdr_len);
+		nc_ensure_sync (dev);
+		return 0;
+	} else if (hdr_len > MIN_HEADER) {
+		// out of band data for us?
+		dbg ("header OOB, %d bytes", hdr_len - MIN_HEADER);
+		nc_ensure_sync (dev);
+		// switch (vendor/product ids) { ... }
+	}
+	skb_pull (skb, hdr_len);
+
+	trailer = (struct nc_trailer *)
+		(skb->data + skb->len - sizeof *trailer);
+	skb_trim (skb, skb->len - sizeof *trailer);
+
+	if ((packet_len & 0x01) == 0) {
+		if (skb->data [packet_len] != PAD_BYTE) {
+			dev->stats.rx_frame_errors++;
+			dbg ("bad pad");
+			return 0;
+		}
+		skb_trim (skb, skb->len - 1);
+	}
+	if (skb->len != packet_len) {
+		dev->stats.rx_frame_errors++;
+		dbg ("bad packet len %d (expected %d)",
+			skb->len, packet_len);
+		nc_ensure_sync (dev);
+		return 0;
+	}
+	if (header->packet_id != get_unaligned (&trailer->packet_id)) {
+		dev->stats.rx_fifo_errors++;
+		dbg ("(2+ dropped) rx packet_id mismatch 0x%x 0x%x",
+			le16_to_cpu (header->packet_id),
+			le16_to_cpu (trailer->packet_id));
+		return 0;
+	}
+#if 0
+	devdbg (dev, "frame <rx h %d p %d id %d", header->hdr_len,
+		header->packet_len, header->packet_id);
+#endif
+	dev->frame_errors = 0;
+	return 1;
+}
+
+static struct sk_buff *
+net1080_tx_fixup (struct usbnet *dev, struct sk_buff *skb, int flags)
+{
+	int			padlen;
+	struct sk_buff		*skb2;
+
+	padlen = ((skb->len + sizeof (struct nc_header)
+			+ sizeof (struct nc_trailer)) & 0x01) ? 0 : 1;
+	if (!skb_cloned (skb)) {
+		int	headroom = skb_headroom (skb);
+		int	tailroom = skb_tailroom (skb);
+
+		if ((padlen + sizeof (struct nc_trailer)) <= tailroom
+			    && sizeof (struct nc_header) <= headroom)
+			/* There's enough head and tail room */
+			return skb;
+
+		if ((sizeof (struct nc_header) + padlen
+					+ sizeof (struct nc_trailer)) <
+				(headroom + tailroom)) {
+			/* There's enough total room, so just readjust */
+			skb->data = memmove (skb->head
+						+ sizeof (struct nc_header),
+					    skb->data, skb->len);
+			skb->tail = skb->data + skb->len;
+			return skb;
+		}
+	}
+
+	/* Create a new skb to use with the correct size */
+	skb2 = skb_copy_expand (skb,
+				sizeof (struct nc_header),
+				sizeof (struct nc_trailer) + padlen,
+				flags);
+	dev_kfree_skb_any (skb);
+	return skb2;
+}
+
+static const struct driver_info	net1080_info = {
+	.description =	"NetChip TurboCONNECT",
+	.flags =	FLAG_FRAMING_NC,
+	.reset =	net1080_reset,
+	.check_connect =net1080_check_connect,
+	.rx_fixup =	net1080_rx_fixup,
+	.tx_fixup =	net1080_tx_fixup,
+};
+
+#endif /* CONFIG_USB_NET1080 */
+
+
+
+#ifdef CONFIG_USB_PL2301
+#define	HAVE_HARDWARE
+
+/*-------------------------------------------------------------------------
+ *
+ * Prolific PL-2301/PL-2302 driver ... http://www.prolifictech.com
+ *
+ * The protocol and handshaking used here should be bug-compatible
+ * with the Linux 2.2 "plusb" driver, by Deti Fliegl.
+ *
+ *-------------------------------------------------------------------------*/
+
+/*
+ * Bits 0-4 can be used for software handshaking; they're set from
+ * one end, cleared from the other, "read" with the interrupt byte.
+ */
+#define	PL_S_EN		(1<<7)		/* (feature only) suspend enable */
+/* reserved bit -- rx ready (6) ? */
+#define	PL_TX_READY	(1<<5)		/* (interrupt only) transmit ready */
+#define	PL_RESET_OUT	(1<<4)		/* reset output pipe */
+#define	PL_RESET_IN	(1<<3)		/* reset input pipe */
+#define	PL_TX_C		(1<<2)		/* transmission complete */
+#define	PL_TX_REQ	(1<<1)		/* transmission received */
+#define	PL_PEER_E	(1<<0)		/* peer exists */
+
+static inline int
+pl_vendor_req (struct usbnet *dev, u8 req, u8 val, u8 index)
+{
+	return usb_control_msg (dev->udev,
+		usb_rcvctrlpipe (dev->udev, 0),
+		req,
+		USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+		val, index,
+		NULL, 0,
+		CONTROL_TIMEOUT_MS);
+}
+
+static inline int
+pl_clear_QuickLink_features (struct usbnet *dev, int val)
+{
+	return pl_vendor_req (dev, 1, (u8) val, 0);
+}
+
+static inline int
+pl_set_QuickLink_features (struct usbnet *dev, int val)
+{
+	return pl_vendor_req (dev, 3, (u8) val, 0);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static int pl_reset (struct usbnet *dev)
+{
+	/* some units seem to need this reset, others reject it utterly.
+	 * FIXME be more like "naplink" or windows drivers.
+	 */
+	(void) pl_set_QuickLink_features (dev,
+		PL_S_EN|PL_RESET_OUT|PL_RESET_IN|PL_PEER_E);
+	return 0;
+}
+
+static const struct driver_info	prolific_info = {
+	.description =	"Prolific PL-2301/PL-2302",
+	.flags =	FLAG_NO_SETINT,
+		/* some PL-2302 versions seem to fail usb_set_interface() */
+	.reset =	pl_reset,
+};
+
+#endif /* CONFIG_USB_PL2301 */
+
+
+#ifdef CONFIG_USB_KC2190
+#define HAVE_HARDWARE
+static const struct driver_info kc2190_info = {
+	.description =  "KC Technology KC-190",
+};
+#endif /* CONFIG_USB_KC2190 */
+
+
+#ifdef	CONFIG_USB_ARMLINUX
+#define	HAVE_HARDWARE
+
+/*-------------------------------------------------------------------------
+ *
+ * Intel's SA-1100 chip integrates basic USB support, and is used
+ * in PDAs like some iPaqs, the Yopy, some Zaurus models, and more.
+ * When they run Linux, arch/arm/mach-sa1100/usb-eth.c may be used to
+ * network using minimal USB framing data.
+ *
+ * This describes the driver currently in standard ARM Linux kernels.
+ * The Zaurus uses a different driver (see later).
+ *
+ * PXA25x and PXA210 use XScale cores (ARM v5TE) with better USB support
+ * and different USB endpoint numbering than the SA1100 devices.  The
+ * mach-pxa/usb-eth.c driver re-uses the device ids from mach-sa1100
+ * so we rely on the endpoint descriptors.
+ *
+ *-------------------------------------------------------------------------*/
+
+static const struct driver_info	linuxdev_info = {
+	.description =	"Linux Device",
+	.check_connect = always_connected,
+};
+
+static const struct driver_info	yopy_info = {
+	.description =	"Yopy",
+	.check_connect = always_connected,
+};
+
+static const struct driver_info	blob_info = {
+	.description =	"Boot Loader OBject",
+	.check_connect = always_connected,
+};
+
+#endif	/* CONFIG_USB_ARMLINUX */
+
+
+#ifdef CONFIG_USB_ZAURUS
+#define	HAVE_HARDWARE
+
+#include <linux/crc32.h>
+
+/*-------------------------------------------------------------------------
+ *
+ * Zaurus is also a SA-1110 based PDA, but one using a different driver
+ * (and framing) for its USB slave/gadget controller than the case above.
+ *
+ * For the current version of that driver, the main way that framing is
+ * nonstandard (also from perspective of the CDC ethernet model!) is a
+ * crc32, added to help detect when some sa1100 usb-to-memory DMA errata
+ * haven't been fully worked around.  Also, all Zaurii use the same
+ * default Ethernet address.
+ *
+ * PXA based models use the same framing, and also can't implement
+ * set_interface properly.
+ *
+ * All known Zaurii lie about their standards conformance.  Most lie by
+ * saying they support CDC Ethernet.  Some lie and say they support CDC
+ * MDLM (as if for access to cell phone modems).  Someone, please beat 
+ * on Sharp for a while with a cluestick.
+ *
+ *-------------------------------------------------------------------------*/
+
+static struct sk_buff *
+zaurus_tx_fixup (struct usbnet *dev, struct sk_buff *skb, int flags)
+{
+	int			padlen;
+	struct sk_buff		*skb2;
+
+	padlen = 2;
+	if (!skb_cloned (skb)) {
+		int	tailroom = skb_tailroom (skb);
+		if ((padlen + 4) <= tailroom)
+			goto done;
+	}
+	skb2 = skb_copy_expand (skb, 0, 4 + padlen, flags);
+	dev_kfree_skb_any (skb);
+	skb = skb2;
+	if (skb) {
+		u32		fcs;
+done:
+		fcs = crc32_le (~0, skb->data, skb->len);
+		fcs = ~fcs;
+
+		*skb_put (skb, 1) = fcs       & 0xff;
+		*skb_put (skb, 1) = (fcs>> 8) & 0xff;
+		*skb_put (skb, 1) = (fcs>>16) & 0xff;
+		*skb_put (skb, 1) = (fcs>>24) & 0xff;
+	}
+	return skb;
+}
+
+static const struct driver_info	zaurus_sl5x00_info = {
+	.description =	"Sharp Zaurus SL-5x00",
+	.flags =	FLAG_FRAMING_Z,
+	.check_connect = always_connected,
+	.bind =		generic_cdc_bind,
+	.unbind =	cdc_unbind,
+	.tx_fixup = 	zaurus_tx_fixup,
+};
+#define	ZAURUS_STRONGARM_INFO	((unsigned long)&zaurus_sl5x00_info)
+
+static const struct driver_info	zaurus_pxa_info = {
+	.description =	"Sharp Zaurus, PXA-2xx based",
+	.flags =	FLAG_FRAMING_Z,
+	.check_connect = always_connected,
+	.bind =		generic_cdc_bind,
+	.unbind =	cdc_unbind,
+	.tx_fixup = 	zaurus_tx_fixup,
+};
+#define	ZAURUS_PXA_INFO		((unsigned long)&zaurus_pxa_info)
+
+static const struct driver_info	zaurus_pxa_mdlm_info = {
+	.description =	"Sharp Zaurus, PXA-255 based",
+	.flags =	FLAG_FRAMING_Z,
+	.check_connect = always_connected,
+	.tx_fixup = 	zaurus_tx_fixup,
+};
+
+static const struct driver_info	olympus_mxl_info = {
+	.description =	"Olympus R1000",
+	.flags =	FLAG_FRAMING_Z,
+	.check_connect = always_connected,
+	.bind =		generic_cdc_bind,
+	.unbind =	cdc_unbind,
+	.tx_fixup = 	zaurus_tx_fixup,
+};
+#define	OLYMPUS_MXL_INFO	((unsigned long)&olympus_mxl_info)
+
+#else
+
+/* blacklist all those devices */
+#define	ZAURUS_STRONGARM_INFO	0
+#define	ZAURUS_PXA_INFO		0
+#define	OLYMPUS_MXL_INFO	0
+
+#endif
+
+
+/*-------------------------------------------------------------------------
+ *
+ * Network Device Driver (peer link to "Host Device", from USB host)
+ *
+ *-------------------------------------------------------------------------*/
+
+static int usbnet_change_mtu (struct net_device *net, int new_mtu)
+{
+	struct usbnet	*dev = netdev_priv(net);
+
+	if (new_mtu <= MIN_PACKET || new_mtu > MAX_PACKET)
+		return -EINVAL;
+#ifdef	CONFIG_USB_NET1080
+	if (((dev->driver_info->flags) & FLAG_FRAMING_NC)) {
+		if (FRAMED_SIZE (new_mtu) > MAX_PACKET)
+			return -EINVAL;
+	}
+#endif
+#ifdef	CONFIG_USB_GENESYS
+	if (((dev->driver_info->flags) & FLAG_FRAMING_GL)
+			&& new_mtu > GL_MAX_PACKET_LEN)
+		return -EINVAL;
+#endif
+	// no second zero-length packet read wanted after mtu-sized packets
+	if (((new_mtu + sizeof (struct ethhdr)) % dev->maxpacket) == 0)
+		return -EDOM;
+	net->mtu = new_mtu;
+	return 0;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static struct net_device_stats *usbnet_get_stats (struct net_device *net)
+{
+	struct usbnet	*dev = netdev_priv(net);
+	return &dev->stats;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* some LK 2.4 HCDs oopsed if we freed or resubmitted urbs from
+ * completion callbacks.  2.5 should have fixed those bugs...
+ */
+
+static void defer_bh (struct usbnet *dev, struct sk_buff *skb)
+{
+	struct sk_buff_head	*list = skb->list;
+	unsigned long		flags;
+
+	spin_lock_irqsave (&list->lock, flags);
+	__skb_unlink (skb, list);
+	spin_unlock (&list->lock);
+	spin_lock (&dev->done.lock);
+	__skb_queue_tail (&dev->done, skb);
+	if (dev->done.qlen == 1)
+		tasklet_schedule (&dev->bh);
+	spin_unlock_irqrestore (&dev->done.lock, flags);
+}
+
+/* some work can't be done in tasklets, so we use keventd
+ *
+ * NOTE:  annoying asymmetry:  if it's active, schedule_work() fails,
+ * but tasklet_schedule() doesn't.  hope the failure is rare.
+ */
+static void defer_kevent (struct usbnet *dev, int work)
+{
+	set_bit (work, &dev->flags);
+	if (!schedule_work (&dev->kevent))
+		deverr (dev, "kevent %d may have been dropped", work);
+	else
+		devdbg (dev, "kevent %d scheduled", work);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static void rx_complete (struct urb *urb, struct pt_regs *regs);
+
+static void rx_submit (struct usbnet *dev, struct urb *urb, int flags)
+{
+	struct sk_buff		*skb;
+	struct skb_data		*entry;
+	int			retval = 0;
+	unsigned long		lockflags;
+	size_t			size;
+
+#ifdef CONFIG_USB_NET1080
+	if (dev->driver_info->flags & FLAG_FRAMING_NC)
+		size = FRAMED_SIZE (dev->net->mtu);
+	else
+#endif
+#ifdef CONFIG_USB_GENESYS
+	if (dev->driver_info->flags & FLAG_FRAMING_GL)
+		size = GL_RCV_BUF_SIZE;
+	else
+#endif
+#ifdef CONFIG_USB_ZAURUS
+	if (dev->driver_info->flags & FLAG_FRAMING_Z)
+		size = 6 + (sizeof (struct ethhdr) + dev->net->mtu);
+	else
+#endif
+#ifdef CONFIG_USB_RNDIS
+	if (dev->driver_info->flags & FLAG_FRAMING_RN)
+		size = RNDIS_MAX_TRANSFER;
+	else
+#endif
+#ifdef CONFIG_USB_AX8817X
+	if (dev->driver_info->flags & FLAG_FRAMING_AX)
+		size = 2048;
+	else
+#endif
+		size = (sizeof (struct ethhdr) + dev->net->mtu);
+
+	if ((skb = alloc_skb (size + NET_IP_ALIGN, flags)) == NULL) {
+		if (netif_msg_rx_err (dev))
+			devdbg (dev, "no rx skb");
+		defer_kevent (dev, EVENT_RX_MEMORY);
+		usb_free_urb (urb);
+		return;
+	}
+	skb_reserve (skb, NET_IP_ALIGN);
+
+	entry = (struct skb_data *) skb->cb;
+	entry->urb = urb;
+	entry->dev = dev;
+	entry->state = rx_start;
+	entry->length = 0;
+
+	usb_fill_bulk_urb (urb, dev->udev, dev->in,
+		skb->data, size, rx_complete, skb);
+	urb->transfer_flags |= URB_ASYNC_UNLINK;
+
+	spin_lock_irqsave (&dev->rxq.lock, lockflags);
+
+	if (netif_running (dev->net)
+			&& netif_device_present (dev->net)
+			&& !test_bit (EVENT_RX_HALT, &dev->flags)) {
+		switch (retval = usb_submit_urb (urb, GFP_ATOMIC)){ 
+		case -EPIPE:
+			defer_kevent (dev, EVENT_RX_HALT);
+			break;
+		case -ENOMEM:
+			defer_kevent (dev, EVENT_RX_MEMORY);
+			break;
+		case -ENODEV:
+			if (netif_msg_ifdown (dev))
+				devdbg (dev, "device gone");
+			netif_device_detach (dev->net);
+			break;
+		default:
+			if (netif_msg_rx_err (dev))
+				devdbg (dev, "rx submit, %d", retval);
+			tasklet_schedule (&dev->bh);
+			break;
+		case 0:
+			__skb_queue_tail (&dev->rxq, skb);
+		}
+	} else {
+		if (netif_msg_ifdown (dev))
+			devdbg (dev, "rx: stopped");
+		retval = -ENOLINK;
+	}
+	spin_unlock_irqrestore (&dev->rxq.lock, lockflags);
+	if (retval) {
+		dev_kfree_skb_any (skb);
+		usb_free_urb (urb);
+	}
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static inline void rx_process (struct usbnet *dev, struct sk_buff *skb)
+{
+	if (dev->driver_info->rx_fixup
+			&& !dev->driver_info->rx_fixup (dev, skb))
+		goto error;
+	// else network stack removes extra byte if we forced a short packet
+
+	if (skb->len)
+		skb_return (dev, skb);
+	else {
+		if (netif_msg_rx_err (dev))
+			devdbg (dev, "drop");
+error:
+		dev->stats.rx_errors++;
+		skb_queue_tail (&dev->done, skb);
+	}
+}
+
+/*-------------------------------------------------------------------------*/
+
+static void rx_complete (struct urb *urb, struct pt_regs *regs)
+{
+	struct sk_buff		*skb = (struct sk_buff *) urb->context;
+	struct skb_data		*entry = (struct skb_data *) skb->cb;
+	struct usbnet		*dev = entry->dev;
+	int			urb_status = urb->status;
+
+	skb_put (skb, urb->actual_length);
+	entry->state = rx_done;
+	entry->urb = NULL;
+
+	switch (urb_status) {
+	    // success
+	    case 0:
+		if (MIN_PACKET > skb->len || skb->len > MAX_PACKET) {
+			entry->state = rx_cleanup;
+			dev->stats.rx_errors++;
+			dev->stats.rx_length_errors++;
+			if (netif_msg_rx_err (dev))
+				devdbg (dev, "rx length %d", skb->len);
+		}
+		break;
+
+	    // stalls need manual reset. this is rare ... except that
+	    // when going through USB 2.0 TTs, unplug appears this way.
+	    // we avoid the highspeed version of the ETIMEOUT/EILSEQ
+	    // storm, recovering as needed.
+	    case -EPIPE:
+		dev->stats.rx_errors++;
+		defer_kevent (dev, EVENT_RX_HALT);
+		// FALLTHROUGH
+
+	    // software-driven interface shutdown
+	    case -ECONNRESET:		// async unlink
+	    case -ESHUTDOWN:		// hardware gone
+		if (netif_msg_ifdown (dev))
+			devdbg (dev, "rx shutdown, code %d", urb_status);
+		goto block;
+
+	    // we get controller i/o faults during khubd disconnect() delays.
+	    // throttle down resubmits, to avoid log floods; just temporarily,
+	    // so we still recover when the fault isn't a khubd delay.
+	    case -EPROTO:		// ehci
+	    case -ETIMEDOUT:		// ohci
+	    case -EILSEQ:		// uhci
+		dev->stats.rx_errors++;
+		if (!timer_pending (&dev->delay)) {
+			mod_timer (&dev->delay, jiffies + THROTTLE_JIFFIES);
+			if (netif_msg_link (dev))
+				devdbg (dev, "rx throttle %d", urb_status);
+		}
+block:
+		entry->state = rx_cleanup;
+		entry->urb = urb;
+		urb = NULL;
+		break;
+
+	    // data overrun ... flush fifo?
+	    case -EOVERFLOW:
+		dev->stats.rx_over_errors++;
+		// FALLTHROUGH
+	    
+	    default:
+		entry->state = rx_cleanup;
+		dev->stats.rx_errors++;
+		if (netif_msg_rx_err (dev))
+			devdbg (dev, "rx status %d", urb_status);
+		break;
+	}
+
+	defer_bh (dev, skb);
+
+	if (urb) {
+		if (netif_running (dev->net)
+				&& !test_bit (EVENT_RX_HALT, &dev->flags)) {
+			rx_submit (dev, urb, GFP_ATOMIC);
+			return;
+		}
+		usb_free_urb (urb);
+	}
+	if (netif_msg_rx_err (dev))
+		devdbg (dev, "no read resubmitted");
+}
+
+static void intr_complete (struct urb *urb, struct pt_regs *regs)
+{
+	struct usbnet	*dev = urb->context;
+	int		status = urb->status;
+
+	switch (status) {
+	    /* success */
+	    case 0:
+		dev->driver_info->status(dev, urb);
+		break;
+
+	    /* software-driven interface shutdown */
+	    case -ENOENT:		// urb killed
+	    case -ESHUTDOWN:		// hardware gone
+		if (netif_msg_ifdown (dev))
+			devdbg (dev, "intr shutdown, code %d", status);
+		return;
+
+	    /* NOTE:  not throttling like RX/TX, since this endpoint
+	     * already polls infrequently
+	     */
+	    default:
+		devdbg (dev, "intr status %d", status);
+		break;
+	}
+
+	if (!netif_running (dev->net))
+		return;
+
+	memset(urb->transfer_buffer, 0, urb->transfer_buffer_length);
+	status = usb_submit_urb (urb, GFP_ATOMIC);
+	if (status != 0 && netif_msg_timer (dev))
+		deverr(dev, "intr resubmit --> %d", status);
+}
+
+/*-------------------------------------------------------------------------*/
+
+// unlink pending rx/tx; completion handlers do all other cleanup
+
+static int unlink_urbs (struct usbnet *dev, struct sk_buff_head *q)
+{
+	unsigned long		flags;
+	struct sk_buff		*skb, *skbnext;
+	int			count = 0;
+
+	spin_lock_irqsave (&q->lock, flags);
+	for (skb = q->next; skb != (struct sk_buff *) q; skb = skbnext) {
+		struct skb_data		*entry;
+		struct urb		*urb;
+		int			retval;
+
+		entry = (struct skb_data *) skb->cb;
+		urb = entry->urb;
+		skbnext = skb->next;
+
+		// during some PM-driven resume scenarios,
+		// these (async) unlinks complete immediately
+		retval = usb_unlink_urb (urb);
+		if (retval != -EINPROGRESS && retval != 0)
+			devdbg (dev, "unlink urb err, %d", retval);
+		else
+			count++;
+	}
+	spin_unlock_irqrestore (&q->lock, flags);
+	return count;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+// precondition: never called in_interrupt
+
+static int usbnet_stop (struct net_device *net)
+{
+	struct usbnet		*dev = netdev_priv(net);
+	int			temp;
+	DECLARE_WAIT_QUEUE_HEAD (unlink_wakeup); 
+	DECLARE_WAITQUEUE (wait, current);
+
+	netif_stop_queue (net);
+
+	if (netif_msg_ifdown (dev))
+		devinfo (dev, "stop stats: rx/tx %ld/%ld, errs %ld/%ld",
+			dev->stats.rx_packets, dev->stats.tx_packets, 
+			dev->stats.rx_errors, dev->stats.tx_errors
+			);
+
+	// ensure there are no more active urbs
+	add_wait_queue (&unlink_wakeup, &wait);
+	dev->wait = &unlink_wakeup;
+	temp = unlink_urbs (dev, &dev->txq) + unlink_urbs (dev, &dev->rxq);
+
+	// maybe wait for deletions to finish.
+	while (skb_queue_len (&dev->rxq)
+			&& skb_queue_len (&dev->txq)
+			&& skb_queue_len (&dev->done)) {
+		msleep(UNLINK_TIMEOUT_MS);
+		if (netif_msg_ifdown (dev))
+			devdbg (dev, "waited for %d urb completions", temp);
+	}
+	dev->wait = NULL;
+	remove_wait_queue (&unlink_wakeup, &wait); 
+
+	usb_kill_urb(dev->interrupt);
+
+	/* deferred work (task, timer, softirq) must also stop.
+	 * can't flush_scheduled_work() until we drop rtnl (later),
+	 * else workers could deadlock; so make workers a NOP.
+	 */
+	dev->flags = 0;
+	del_timer_sync (&dev->delay);
+	tasklet_kill (&dev->bh);
+
+	return 0;
+}
+
+/*-------------------------------------------------------------------------*/
+
+// posts reads, and enables write queuing
+
+// precondition: never called in_interrupt
+
+static int usbnet_open (struct net_device *net)
+{
+	struct usbnet		*dev = netdev_priv(net);
+	int			retval = 0;
+	struct driver_info	*info = dev->driver_info;
+
+	// put into "known safe" state
+	if (info->reset && (retval = info->reset (dev)) < 0) {
+		if (netif_msg_ifup (dev))
+			devinfo (dev,
+				"open reset fail (%d) usbnet usb-%s-%s, %s",
+				retval,
+				dev->udev->bus->bus_name, dev->udev->devpath,
+			info->description);
+		goto done;
+	}
+
+	// insist peer be connected
+	if (info->check_connect && (retval = info->check_connect (dev)) < 0) {
+		if (netif_msg_ifup (dev))
+			devdbg (dev, "can't open; %d", retval);
+		goto done;
+	}
+
+	/* start any status interrupt transfer */
+	if (dev->interrupt) {
+		retval = usb_submit_urb (dev->interrupt, GFP_KERNEL);
+		if (retval < 0) {
+			if (netif_msg_ifup (dev))
+				deverr (dev, "intr submit %d", retval);
+			goto done;
+		}
+	}
+
+	netif_start_queue (net);
+	if (netif_msg_ifup (dev)) {
+		char	*framing;
+
+		if (dev->driver_info->flags & FLAG_FRAMING_NC)
+			framing = "NetChip";
+		else if (dev->driver_info->flags & FLAG_FRAMING_GL)
+			framing = "GeneSys";
+		else if (dev->driver_info->flags & FLAG_FRAMING_Z)
+			framing = "Zaurus";
+		else if (dev->driver_info->flags & FLAG_FRAMING_RN)
+			framing = "RNDIS";
+		else if (dev->driver_info->flags & FLAG_FRAMING_AX)
+			framing = "ASIX";
+		else
+			framing = "simple";
+
+		devinfo (dev, "open: enable queueing "
+				"(rx %d, tx %d) mtu %d %s framing",
+			RX_QLEN (dev), TX_QLEN (dev), dev->net->mtu,
+			framing);
+	}
+
+	// delay posting reads until we're fully open
+	tasklet_schedule (&dev->bh);
+done:
+	return retval;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static void usbnet_get_drvinfo (struct net_device *net, struct ethtool_drvinfo *info)
+{
+	struct usbnet *dev = netdev_priv(net);
+
+	strncpy (info->driver, driver_name, sizeof info->driver);
+	strncpy (info->version, DRIVER_VERSION, sizeof info->version);
+	strncpy (info->fw_version, dev->driver_info->description,
+		sizeof info->fw_version);
+	usb_make_path (dev->udev, info->bus_info, sizeof info->bus_info);
+}
+
+static u32 usbnet_get_link (struct net_device *net)
+{
+	struct usbnet *dev = netdev_priv(net);
+
+	/* If a check_connect is defined, return it's results */
+	if (dev->driver_info->check_connect)
+		return dev->driver_info->check_connect (dev) == 0;
+
+	/* Otherwise, we're up to avoid breaking scripts */
+	return 1;
+}
+
+static u32 usbnet_get_msglevel (struct net_device *net)
+{
+	struct usbnet *dev = netdev_priv(net);
+
+	return dev->msg_enable;
+}
+
+static void usbnet_set_msglevel (struct net_device *net, u32 level)
+{
+	struct usbnet *dev = netdev_priv(net);
+
+	dev->msg_enable = level;
+}
+
+static int usbnet_ioctl (struct net_device *net, struct ifreq *rq, int cmd)
+{
+#ifdef NEED_MII
+	{
+	struct usbnet *dev = netdev_priv(net);
+
+	if (dev->mii.mdio_read != NULL && dev->mii.mdio_write != NULL)
+		return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
+	}
+#endif
+	return -EOPNOTSUPP;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* work that cannot be done in interrupt context uses keventd.
+ *
+ * NOTE:  with 2.5 we could do more of this using completion callbacks,
+ * especially now that control transfers can be queued.
+ */
+static void
+kevent (void *data)
+{
+	struct usbnet		*dev = data;
+	int			status;
+
+	/* usb_clear_halt() needs a thread context */
+	if (test_bit (EVENT_TX_HALT, &dev->flags)) {
+		unlink_urbs (dev, &dev->txq);
+		status = usb_clear_halt (dev->udev, dev->out);
+		if (status < 0 && status != -EPIPE) {
+			if (netif_msg_tx_err (dev))
+				deverr (dev, "can't clear tx halt, status %d",
+					status);
+		} else {
+			clear_bit (EVENT_TX_HALT, &dev->flags);
+			netif_wake_queue (dev->net);
+		}
+	}
+	if (test_bit (EVENT_RX_HALT, &dev->flags)) {
+		unlink_urbs (dev, &dev->rxq);
+		status = usb_clear_halt (dev->udev, dev->in);
+		if (status < 0 && status != -EPIPE) {
+			if (netif_msg_rx_err (dev))
+				deverr (dev, "can't clear rx halt, status %d",
+					status);
+		} else {
+			clear_bit (EVENT_RX_HALT, &dev->flags);
+			tasklet_schedule (&dev->bh);
+		}
+	}
+
+	/* tasklet could resubmit itself forever if memory is tight */
+	if (test_bit (EVENT_RX_MEMORY, &dev->flags)) {
+		struct urb	*urb = NULL;
+
+		if (netif_running (dev->net))
+			urb = usb_alloc_urb (0, GFP_KERNEL);
+		else
+			clear_bit (EVENT_RX_MEMORY, &dev->flags);
+		if (urb != NULL) {
+			clear_bit (EVENT_RX_MEMORY, &dev->flags);
+			rx_submit (dev, urb, GFP_KERNEL);
+			tasklet_schedule (&dev->bh);
+		}
+	}
+
+	if (dev->flags)
+		devdbg (dev, "kevent done, flags = 0x%lx",
+			dev->flags);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static void tx_complete (struct urb *urb, struct pt_regs *regs)
+{
+	struct sk_buff		*skb = (struct sk_buff *) urb->context;
+	struct skb_data		*entry = (struct skb_data *) skb->cb;
+	struct usbnet		*dev = entry->dev;
+
+	if (urb->status == 0) {
+		dev->stats.tx_packets++;
+		dev->stats.tx_bytes += entry->length;
+	} else {
+		dev->stats.tx_errors++;
+
+		switch (urb->status) {
+		case -EPIPE:
+			defer_kevent (dev, EVENT_TX_HALT);
+			break;
+
+		/* software-driven interface shutdown */
+		case -ECONNRESET:		// async unlink
+		case -ESHUTDOWN:		// hardware gone
+			break;
+
+		// like rx, tx gets controller i/o faults during khubd delays
+		// and so it uses the same throttling mechanism.
+		case -EPROTO:		// ehci
+		case -ETIMEDOUT:	// ohci
+		case -EILSEQ:		// uhci
+			if (!timer_pending (&dev->delay)) {
+				mod_timer (&dev->delay,
+					jiffies + THROTTLE_JIFFIES);
+				if (netif_msg_link (dev))
+					devdbg (dev, "tx throttle %d",
+							urb->status);
+			}
+			netif_stop_queue (dev->net);
+			break;
+		default:
+			if (netif_msg_tx_err (dev))
+				devdbg (dev, "tx err %d", entry->urb->status);
+			break;
+		}
+	}
+
+	urb->dev = NULL;
+	entry->state = tx_done;
+	defer_bh (dev, skb);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static void usbnet_tx_timeout (struct net_device *net)
+{
+	struct usbnet		*dev = netdev_priv(net);
+
+	unlink_urbs (dev, &dev->txq);
+	tasklet_schedule (&dev->bh);
+
+	// FIXME: device recovery -- reset?
+}
+
+/*-------------------------------------------------------------------------*/
+
+static int usbnet_start_xmit (struct sk_buff *skb, struct net_device *net)
+{
+	struct usbnet		*dev = netdev_priv(net);
+	int			length;
+	int			retval = NET_XMIT_SUCCESS;
+	struct urb		*urb = NULL;
+	struct skb_data		*entry;
+	struct driver_info	*info = dev->driver_info;
+	unsigned long		flags;
+#ifdef	CONFIG_USB_NET1080
+	struct nc_header	*header = NULL;
+	struct nc_trailer	*trailer = NULL;
+#endif	/* CONFIG_USB_NET1080 */
+
+	// some devices want funky USB-level framing, for
+	// win32 driver (usually) and/or hardware quirks
+	if (info->tx_fixup) {
+		skb = info->tx_fixup (dev, skb, GFP_ATOMIC);
+		if (!skb) {
+			if (netif_msg_tx_err (dev))
+				devdbg (dev, "can't tx_fixup skb");
+			goto drop;
+		}
+	}
+	length = skb->len;
+
+	if (!(urb = usb_alloc_urb (0, GFP_ATOMIC))) {
+		if (netif_msg_tx_err (dev))
+			devdbg (dev, "no urb");
+		goto drop;
+	}
+
+	entry = (struct skb_data *) skb->cb;
+	entry->urb = urb;
+	entry->dev = dev;
+	entry->state = tx_start;
+	entry->length = length;
+
+	// FIXME: reorganize a bit, so that fixup() fills out NetChip
+	// framing too. (Packet ID update needs the spinlock...)
+	// [ BETTER:  we already own net->xmit_lock, that's enough ]
+
+#ifdef	CONFIG_USB_NET1080
+	if (info->flags & FLAG_FRAMING_NC) {
+		header = (struct nc_header *) skb_push (skb, sizeof *header);
+		header->hdr_len = cpu_to_le16 (sizeof (*header));
+		header->packet_len = cpu_to_le16 (length);
+		if (!((skb->len + sizeof *trailer) & 0x01))
+			*skb_put (skb, 1) = PAD_BYTE;
+		trailer = (struct nc_trailer *) skb_put (skb, sizeof *trailer);
+	}
+#endif	/* CONFIG_USB_NET1080 */
+
+	usb_fill_bulk_urb (urb, dev->udev, dev->out,
+			skb->data, skb->len, tx_complete, skb);
+	urb->transfer_flags |= URB_ASYNC_UNLINK;
+
+	/* don't assume the hardware handles USB_ZERO_PACKET
+	 * NOTE:  strictly conforming cdc-ether devices should expect
+	 * the ZLP here, but ignore the one-byte packet.
+	 *
+	 * FIXME zero that byte, if it doesn't require a new skb.
+	 */
+	if ((length % dev->maxpacket) == 0)
+		urb->transfer_buffer_length++;
+
+	spin_lock_irqsave (&dev->txq.lock, flags);
+
+#ifdef	CONFIG_USB_NET1080
+	if (info->flags & FLAG_FRAMING_NC) {
+		header->packet_id = cpu_to_le16 ((u16)dev->dev_packet_id++);
+		put_unaligned (header->packet_id, &trailer->packet_id);
+#if 0
+		devdbg (dev, "frame >tx h %d p %d id %d",
+			header->hdr_len, header->packet_len,
+			header->packet_id);
+#endif
+	}
+#endif	/* CONFIG_USB_NET1080 */
+
+	switch ((retval = usb_submit_urb (urb, GFP_ATOMIC))) {
+	case -EPIPE:
+		netif_stop_queue (net);
+		defer_kevent (dev, EVENT_TX_HALT);
+		break;
+	default:
+		if (netif_msg_tx_err (dev))
+			devdbg (dev, "tx: submit urb err %d", retval);
+		break;
+	case 0:
+		net->trans_start = jiffies;
+		__skb_queue_tail (&dev->txq, skb);
+		if (dev->txq.qlen >= TX_QLEN (dev))
+			netif_stop_queue (net);
+	}
+	spin_unlock_irqrestore (&dev->txq.lock, flags);
+
+	if (retval) {
+		if (netif_msg_tx_err (dev))
+			devdbg (dev, "drop, code %d", retval);
+drop:
+		retval = NET_XMIT_SUCCESS;
+		dev->stats.tx_dropped++;
+		if (skb)
+			dev_kfree_skb_any (skb);
+		usb_free_urb (urb);
+	} else if (netif_msg_tx_queued (dev)) {
+		devdbg (dev, "> tx, len %d, type 0x%x",
+			length, skb->protocol);
+	}
+	return retval;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+// tasklet (work deferred from completions, in_irq) or timer
+
+static void usbnet_bh (unsigned long param)
+{
+	struct usbnet		*dev = (struct usbnet *) param;
+	struct sk_buff		*skb;
+	struct skb_data		*entry;
+
+	while ((skb = skb_dequeue (&dev->done))) {
+		entry = (struct skb_data *) skb->cb;
+		switch (entry->state) {
+		    case rx_done:
+			entry->state = rx_cleanup;
+			rx_process (dev, skb);
+			continue;
+		    case tx_done:
+		    case rx_cleanup:
+			usb_free_urb (entry->urb);
+			dev_kfree_skb (skb);
+			continue;
+		    default:
+			devdbg (dev, "bogus skb state %d", entry->state);
+		}
+	}
+
+	// waiting for all pending urbs to complete?
+	if (dev->wait) {
+		if ((dev->txq.qlen + dev->rxq.qlen + dev->done.qlen) == 0) {
+			wake_up (dev->wait);
+		}
+
+	// or are we maybe short a few urbs?
+	} else if (netif_running (dev->net)
+			&& netif_device_present (dev->net)
+			&& !timer_pending (&dev->delay)
+			&& !test_bit (EVENT_RX_HALT, &dev->flags)) {
+		int	temp = dev->rxq.qlen;
+		int	qlen = RX_QLEN (dev);
+
+		if (temp < qlen) {
+			struct urb	*urb;
+			int		i;
+
+			// don't refill the queue all at once
+			for (i = 0; i < 10 && dev->rxq.qlen < qlen; i++) {
+				urb = usb_alloc_urb (0, GFP_ATOMIC);
+				if (urb != NULL)
+					rx_submit (dev, urb, GFP_ATOMIC);
+			}
+			if (temp != dev->rxq.qlen && netif_msg_link (dev))
+				devdbg (dev, "rxqlen %d --> %d",
+						temp, dev->rxq.qlen);
+			if (dev->rxq.qlen < qlen)
+				tasklet_schedule (&dev->bh);
+		}
+		if (dev->txq.qlen < TX_QLEN (dev))
+			netif_wake_queue (dev->net);
+	}
+}
+
+
+
+/*-------------------------------------------------------------------------
+ *
+ * USB Device Driver support
+ *
+ *-------------------------------------------------------------------------*/
+ 
+// precondition: never called in_interrupt
+
+static void usbnet_disconnect (struct usb_interface *intf)
+{
+	struct usbnet		*dev;
+	struct usb_device	*xdev;
+	struct net_device	*net;
+
+	dev = usb_get_intfdata(intf);
+	usb_set_intfdata(intf, NULL);
+	if (!dev)
+		return;
+
+	xdev = interface_to_usbdev (intf);
+
+	if (netif_msg_probe (dev))
+		devinfo (dev, "unregister usbnet usb-%s-%s, %s",
+			xdev->bus->bus_name, xdev->devpath,
+			dev->driver_info->description);
+	
+	net = dev->net;
+	unregister_netdev (net);
+
+	/* we don't hold rtnl here ... */
+	flush_scheduled_work ();
+
+	if (dev->driver_info->unbind)
+		dev->driver_info->unbind (dev, intf);
+
+	free_netdev(net);
+	usb_put_dev (xdev);
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static struct ethtool_ops usbnet_ethtool_ops;
+
+// precondition: never called in_interrupt
+
+static int
+usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
+{
+	struct usbnet			*dev;
+	struct net_device 		*net;
+	struct usb_host_interface	*interface;
+	struct driver_info		*info;
+	struct usb_device		*xdev;
+	int				status;
+
+	info = (struct driver_info *) prod->driver_info;
+	if (!info) {
+		dev_dbg (&udev->dev, "blacklisted by %s\n", driver_name);
+		return -ENODEV;
+	}
+	xdev = interface_to_usbdev (udev);
+	interface = udev->cur_altsetting;
+
+	usb_get_dev (xdev);
+
+	status = -ENOMEM;
+
+	// set up our own records
+	net = alloc_etherdev(sizeof(*dev));
+	if (!net) {
+		dbg ("can't kmalloc dev");
+		goto out;
+	}
+
+	dev = netdev_priv(net);
+	dev->udev = xdev;
+	dev->driver_info = info;
+	dev->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
+				| NETIF_MSG_PROBE | NETIF_MSG_LINK);
+	skb_queue_head_init (&dev->rxq);
+	skb_queue_head_init (&dev->txq);
+	skb_queue_head_init (&dev->done);
+	dev->bh.func = usbnet_bh;
+	dev->bh.data = (unsigned long) dev;
+	INIT_WORK (&dev->kevent, kevent, dev);
+	dev->delay.function = usbnet_bh;
+	dev->delay.data = (unsigned long) dev;
+	init_timer (&dev->delay);
+
+	SET_MODULE_OWNER (net);
+	dev->net = net;
+	strcpy (net->name, "usb%d");
+	memcpy (net->dev_addr, node_id, sizeof node_id);
+
+#if 0
+// dma_supported() is deeply broken on almost all architectures
+	// possible with some EHCI controllers
+	if (dma_supported (&udev->dev, DMA_64BIT_MASK))
+		net->features |= NETIF_F_HIGHDMA;
+#endif
+
+	net->change_mtu = usbnet_change_mtu;
+	net->get_stats = usbnet_get_stats;
+	net->hard_start_xmit = usbnet_start_xmit;
+	net->open = usbnet_open;
+	net->stop = usbnet_stop;
+	net->watchdog_timeo = TX_TIMEOUT_JIFFIES;
+	net->tx_timeout = usbnet_tx_timeout;
+	net->do_ioctl = usbnet_ioctl;
+	net->ethtool_ops = &usbnet_ethtool_ops;
+
+	// allow device-specific bind/init procedures
+	// NOTE net->name still not usable ...
+	if (info->bind) {
+		status = info->bind (dev, udev);
+		// heuristic:  "usb%d" for links we know are two-host,
+		// else "eth%d" when there's reasonable doubt.  userspace
+		// can rename the link if it knows better.
+		if ((dev->driver_info->flags & FLAG_ETHER) != 0
+				&& (net->dev_addr [0] & 0x02) == 0)
+			strcpy (net->name, "eth%d");
+	} else if (!info->in || info->out)
+		status = get_endpoints (dev, udev);
+	else {
+		dev->in = usb_rcvbulkpipe (xdev, info->in);
+		dev->out = usb_sndbulkpipe (xdev, info->out);
+		if (!(info->flags & FLAG_NO_SETINT))
+			status = usb_set_interface (xdev,
+				interface->desc.bInterfaceNumber,
+				interface->desc.bAlternateSetting);
+		else
+			status = 0;
+
+	}
+
+	if (status == 0 && dev->status)
+		status = init_status (dev, udev);
+	if (status < 0)
+		goto out1;
+
+	dev->maxpacket = usb_maxpacket (dev->udev, dev->out, 1);
+	
+	SET_NETDEV_DEV(net, &udev->dev);
+	status = register_netdev (net);
+	if (status)
+		goto out3;
+	if (netif_msg_probe (dev))
+		devinfo (dev, "register usbnet at usb-%s-%s, %s, "
+				"%02x:%02x:%02x:%02x:%02x:%02x",
+			xdev->bus->bus_name, xdev->devpath,
+			dev->driver_info->description,
+			net->dev_addr [0], net->dev_addr [1],
+			net->dev_addr [2], net->dev_addr [3],
+			net->dev_addr [4], net->dev_addr [5]);
+
+	// ok, it's ready to go.
+	usb_set_intfdata (udev, dev);
+
+	// start as if the link is up
+	netif_device_attach (net);
+
+	return 0;
+
+out3:
+	if (info->unbind)
+		info->unbind (dev, udev);
+out1:
+	free_netdev(net);
+out:
+	usb_put_dev(xdev);
+	return status;
+}
+
+/*-------------------------------------------------------------------------*/
+
+#ifdef	CONFIG_PM
+
+static int usbnet_suspend (struct usb_interface *intf, u32 state)
+{
+	struct usbnet		*dev = usb_get_intfdata(intf);
+	
+	netif_device_detach (dev->net);
+	return 0;
+}
+
+static int usbnet_resume (struct usb_interface *intf)
+{
+	struct usbnet		*dev = usb_get_intfdata(intf);
+
+	netif_device_attach (dev->net);
+	return 0;
+}
+
+#else	/* !CONFIG_PM */
+
+#define	usbnet_suspend	NULL
+#define	usbnet_resume	NULL
+
+#endif	/* CONFIG_PM */
+
+/*-------------------------------------------------------------------------*/
+
+#ifndef	HAVE_HARDWARE
+#error You need to configure some hardware for this driver
+#endif
+
+/*
+ * chip vendor names won't normally be on the cables, and
+ * may not be on the device.
+ */
+
+static const struct usb_device_id	products [] = {
+
+#ifdef	CONFIG_USB_ALI_M5632
+{
+	USB_DEVICE (0x0402, 0x5632),	// ALi defaults
+	.driver_info =	(unsigned long) &ali_m5632_info,
+},
+#endif
+
+#ifdef	CONFIG_USB_AN2720
+{
+	USB_DEVICE (0x0547, 0x2720),	// AnchorChips defaults
+	.driver_info =	(unsigned long) &an2720_info,
+}, {
+	USB_DEVICE (0x0547, 0x2727),	// Xircom PGUNET
+	.driver_info =	(unsigned long) &an2720_info,
+},
+#endif
+
+#ifdef	CONFIG_USB_BELKIN
+{
+	USB_DEVICE (0x050d, 0x0004),	// Belkin
+	.driver_info =	(unsigned long) &belkin_info,
+}, {
+	USB_DEVICE (0x056c, 0x8100),	// eTEK
+	.driver_info =	(unsigned long) &belkin_info,
+}, {
+	USB_DEVICE (0x0525, 0x9901),	// Advance USBNET (eTEK)
+	.driver_info =	(unsigned long) &belkin_info,
+},
+#endif
+
+#ifdef CONFIG_USB_AX8817X
+{
+	// Linksys USB200M
+	USB_DEVICE (0x077b, 0x2226),
+	.driver_info =	(unsigned long) &ax8817x_info,
+}, {
+	// Netgear FA120
+	USB_DEVICE (0x0846, 0x1040),
+	.driver_info =  (unsigned long) &netgear_fa120_info,
+}, {
+	// DLink DUB-E100
+	USB_DEVICE (0x2001, 0x1a00),
+	.driver_info =  (unsigned long) &dlink_dub_e100_info,
+}, {
+	// Intellinet, ST Lab USB Ethernet
+	USB_DEVICE (0x0b95, 0x1720),
+	.driver_info =  (unsigned long) &ax8817x_info,
+}, {
+	// Hawking UF200, TrendNet TU2-ET100
+	USB_DEVICE (0x07b8, 0x420a),
+	.driver_info =  (unsigned long) &hawking_uf200_info,
+}, {
+        // Billionton Systems, USB2AR 
+        USB_DEVICE (0x08dd, 0x90ff),
+        .driver_info =  (unsigned long) &ax8817x_info,
+}, {
+	// ATEN UC210T
+	USB_DEVICE (0x0557, 0x2009),
+	.driver_info =  (unsigned long) &ax8817x_info,
+}, {
+	// Buffalo LUA-U2-KTX
+	USB_DEVICE (0x0411, 0x003d),
+	.driver_info =  (unsigned long) &ax8817x_info,
+}, {
+	// Sitecom LN-029 "USB 2.0 10/100 Ethernet adapter"
+	USB_DEVICE (0x6189, 0x182d),
+	.driver_info =  (unsigned long) &ax8817x_info,
+}, {
+	// corega FEther USB2-TX
+	USB_DEVICE (0x07aa, 0x0017),
+	.driver_info =  (unsigned long) &ax8817x_info,
+}, {
+	// Surecom EP-1427X-2
+	USB_DEVICE (0x1189, 0x0893),
+	.driver_info = (unsigned long) &ax8817x_info,
+}, {
+	// goodway corp usb gwusb2e
+	USB_DEVICE (0x1631, 0x6200),
+	.driver_info = (unsigned long) &ax8817x_info,
+}, {
+	// ASIX AX88772 10/100
+        USB_DEVICE (0x0b95, 0x7720),
+        .driver_info = (unsigned long) &ax88772_info,
+},
+#endif
+
+#ifdef	CONFIG_USB_EPSON2888
+{
+	USB_DEVICE (0x0525, 0x2888),	// EPSON USB client
+	.driver_info	= (unsigned long) &epson2888_info,
+},
+#endif
+
+#ifdef	CONFIG_USB_GENESYS
+{
+	USB_DEVICE (0x05e3, 0x0502),	// GL620USB-A
+	.driver_info =	(unsigned long) &genelink_info,
+},
+	/* NOT: USB_DEVICE (0x05e3, 0x0501),	// GL620USB
+	 * that's half duplex, not currently supported
+	 */
+#endif
+
+#ifdef	CONFIG_USB_NET1080
+{
+	USB_DEVICE (0x0525, 0x1080),	// NetChip ref design
+	.driver_info =	(unsigned long) &net1080_info,
+}, {
+	USB_DEVICE (0x06D0, 0x0622),	// Laplink Gold
+	.driver_info =	(unsigned long) &net1080_info,
+},
+#endif
+
+#ifdef CONFIG_USB_PL2301
+{
+	USB_DEVICE (0x067b, 0x0000),	// PL-2301
+	.driver_info =	(unsigned long) &prolific_info,
+}, {
+	USB_DEVICE (0x067b, 0x0001),	// PL-2302
+	.driver_info =	(unsigned long) &prolific_info,
+},
+#endif
+
+#ifdef CONFIG_USB_KC2190
+{
+	USB_DEVICE (0x050f, 0x0190),	// KC-190
+	.driver_info =	(unsigned long) &kc2190_info,
+},
+#endif
+
+#ifdef	CONFIG_USB_RNDIS
+{
+	/* RNDIS is MSFT's un-official variant of CDC ACM */
+	USB_INTERFACE_INFO (USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
+	.driver_info = (unsigned long) &rndis_info,
+},
+#endif
+
+#ifdef	CONFIG_USB_ARMLINUX
+/*
+ * SA-1100 using standard ARM Linux kernels, or compatible.
+ * Often used when talking to Linux PDAs (iPaq, Yopy, etc).
+ * The sa-1100 "usb-eth" driver handles the basic framing.
+ *
+ * PXA25x or PXA210 ...  these use a "usb-eth" driver much like
+ * the sa1100 one, but hardware uses different endpoint numbers.
+ *
+ * Or the Linux "Ethernet" gadget on hardware that can't talk
+ * CDC Ethernet (e.g., no altsettings), in either of two modes:
+ *  - acting just like the old "usb-eth" firmware, though
+ *    the implementation is different 
+ *  - supporting RNDIS as the first/default configuration for
+ *    MS-Windows interop; Linux needs to use the other config
+ */
+{
+	// 1183 = 0x049F, both used as hex values?
+	// Compaq "Itsy" vendor/product id
+	USB_DEVICE (0x049F, 0x505A),	// usb-eth, or compatible
+	.driver_info =	(unsigned long) &linuxdev_info,
+}, {
+	USB_DEVICE (0x0E7E, 0x1001),	// G.Mate "Yopy"
+	.driver_info =	(unsigned long) &yopy_info,
+}, {
+	USB_DEVICE (0x8086, 0x07d3),	// "blob" bootloader
+	.driver_info =	(unsigned long) &blob_info,
+}, {
+	// Linux Ethernet/RNDIS gadget on pxa210/25x/26x
+	// e.g. Gumstix, current OpenZaurus, ...
+	USB_DEVICE_VER (0x0525, 0xa4a2, 0x0203, 0x0203),
+	.driver_info =	(unsigned long) &linuxdev_info,
+}, 
+#endif
+
+#if	defined(CONFIG_USB_ZAURUS) || defined(CONFIG_USB_CDCETHER)
+/*
+ * SA-1100 based Sharp Zaurus ("collie"), or compatible.
+ * Same idea as above, but different framing.
+ *
+ * PXA-2xx based models are also lying-about-cdc.
+ * Some models don't even tell the same lies ...
+ *
+ * NOTE:  OpenZaurus versions with 2.6 kernels won't use these entries,
+ * unlike the older ones with 2.4 "embedix" kernels.
+ *
+ * NOTE:  These entries do double-duty, serving as blacklist entries
+ * whenever Zaurus support isn't enabled, but CDC Ethernet is.
+ */
+#define	ZAURUS_MASTER_INTERFACE \
+	.bInterfaceClass	= USB_CLASS_COMM, \
+	.bInterfaceSubClass	= USB_CDC_SUBCLASS_ETHERNET, \
+	.bInterfaceProtocol	= USB_CDC_PROTO_NONE
+{
+	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
+			  | USB_DEVICE_ID_MATCH_DEVICE, 
+	.idVendor		= 0x04DD,
+	.idProduct		= 0x8004,
+	ZAURUS_MASTER_INTERFACE,
+	.driver_info = ZAURUS_STRONGARM_INFO,
+}, {
+	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
+			  | USB_DEVICE_ID_MATCH_DEVICE, 
+	.idVendor		= 0x04DD,
+	.idProduct		= 0x8005,	/* A-300 */
+	ZAURUS_MASTER_INTERFACE,
+	.driver_info = ZAURUS_PXA_INFO,
+}, {
+	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
+			  | USB_DEVICE_ID_MATCH_DEVICE, 
+	.idVendor		= 0x04DD,
+	.idProduct		= 0x8006,	/* B-500/SL-5600 */
+	ZAURUS_MASTER_INTERFACE,
+	.driver_info = ZAURUS_PXA_INFO,
+}, {
+	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
+	          | USB_DEVICE_ID_MATCH_DEVICE,
+	.idVendor		= 0x04DD,
+	.idProduct		= 0x8007,	/* C-700 */
+	ZAURUS_MASTER_INTERFACE,
+	.driver_info = ZAURUS_PXA_INFO,
+}, {
+	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
+		 | USB_DEVICE_ID_MATCH_DEVICE,
+	.idVendor               = 0x04DD,
+	.idProduct              = 0x9031,	/* C-750 C-760 */
+	ZAURUS_MASTER_INTERFACE,
+	.driver_info = ZAURUS_PXA_INFO,
+}, {
+	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
+		 | USB_DEVICE_ID_MATCH_DEVICE,
+	.idVendor               = 0x04DD,
+	.idProduct              = 0x9032,	/* SL-6000 */
+	ZAURUS_MASTER_INTERFACE,
+	.driver_info = ZAURUS_PXA_INFO,
+}, {
+	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
+		 | USB_DEVICE_ID_MATCH_DEVICE,
+	.idVendor               = 0x04DD,
+	/* reported with some C860 units */
+	.idProduct              = 0x9050,	/* C-860 */
+	ZAURUS_MASTER_INTERFACE,
+	.driver_info = ZAURUS_PXA_INFO,
+#ifdef	CONFIG_USB_ZAURUS
+	/* at least some (reports vary) C-860 units have very different
+	 * lies about their standards support.
+	 */
+}, {
+	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
+		 | USB_DEVICE_ID_MATCH_DEVICE,
+	.idVendor               = 0x04DD,
+	/* reported with some C860 units */
+	.idProduct              = 0x9031,	/* C-860 */
+	.bInterfaceClass	= USB_CLASS_COMM,
+	.bInterfaceSubClass	= USB_CDC_SUBCLASS_MDLM,
+	.bInterfaceProtocol	= USB_CDC_PROTO_NONE,
+	.driver_info 		= (unsigned long) &zaurus_pxa_mdlm_info,
+#endif
+},
+
+/* Olympus has some models with a Zaurus-compatible option.
+ * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
+ */
+{
+	.match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
+		 | USB_DEVICE_ID_MATCH_DEVICE,
+	.idVendor               = 0x07B4,
+	.idProduct              = 0x0F02,	/* R-1000 */
+	ZAURUS_MASTER_INTERFACE,
+	.driver_info = OLYMPUS_MXL_INFO,
+},
+#endif
+
+#ifdef	CONFIG_USB_CDCETHER
+{
+	/* CDC Ether uses two interfaces, not necessarily consecutive.
+	 * We match the main interface, ignoring the optional device
+	 * class so we could handle devices that aren't exclusively
+	 * CDC ether.
+	 *
+	 * NOTE:  this match must come AFTER entries working around
+	 * bugs/quirks in a given product (like Zaurus, above).
+	 */
+	USB_INTERFACE_INFO (USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
+			USB_CDC_PROTO_NONE),
+	.driver_info = (unsigned long) &cdc_info,
+},
+#endif
+
+	{ },		// END
+};
+MODULE_DEVICE_TABLE (usb, products);
+
+static struct usb_driver usbnet_driver = {
+	.owner =	THIS_MODULE,
+	.name =		driver_name,
+	.id_table =	products,
+	.probe =	usbnet_probe,
+	.disconnect =	usbnet_disconnect,
+	.suspend =	usbnet_suspend,
+	.resume =	usbnet_resume,
+};
+
+/* Default ethtool_ops assigned.  Devices can override in their bind() routine */
+static struct ethtool_ops usbnet_ethtool_ops = {
+	.get_drvinfo		= usbnet_get_drvinfo,
+	.get_link		= usbnet_get_link,
+	.get_msglevel		= usbnet_get_msglevel,
+	.set_msglevel		= usbnet_set_msglevel,
+};
+
+/*-------------------------------------------------------------------------*/
+
+static int __init usbnet_init (void)
+{
+	// compiler should optimize these out
+	BUG_ON (sizeof (((struct sk_buff *)0)->cb)
+			< sizeof (struct skb_data));
+#ifdef	CONFIG_USB_CDCETHER
+	BUG_ON ((sizeof (((struct usbnet *)0)->data)
+			< sizeof (struct cdc_state)));
+#endif
+
+	random_ether_addr(node_id);
+
+ 	return usb_register(&usbnet_driver);
+}
+module_init (usbnet_init);
+
+static void __exit usbnet_exit (void)
+{
+ 	usb_deregister (&usbnet_driver);
+}
+module_exit (usbnet_exit);
+
+MODULE_AUTHOR ("David Brownell <dbrownell@users.sourceforge.net>");
+MODULE_DESCRIPTION ("USB Host-to-Host Link Drivers (numerous vendors)");
+MODULE_LICENSE ("GPL");