Manual merge with Linus

1 files changed, 105 insertions, 3121 deletions

diff --git a/drivers/usb/net/usbnet.c b/drivers/usb/net/usbnet.c
index a2f67245f6d..6c460918d54 100644
--- a/drivers/usb/net/usbnet.c
+++ b/drivers/usb/net/usbnet.c
@@ -1,10 +1,7 @@
 /*
- * USB Networking Links
- * Copyright (C) 2000-2005 by David Brownell <dbrownell@users.sourceforge.net>
- * Copyright (C) 2002 Pavel Machek <pavel@ucw.cz>
+ * USB Network driver infrastructure
+ * Copyright (C) 2000-2005 by David Brownell
  * 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
@@ -23,95 +20,15 @@
 
 /*
  * 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)
- *-------------------------------------------------------------------------*/
+ * kinds of full and high speed networking devices:  host-to-host cables,
+ * smart usb peripherals, and actual Ethernet adapters.
+ *
+ * These devices usually differ in terms of control protocols (if they
+ * even have one!) and sometimes they define new framing to wrap or batch
+ * Ethernet packets.  Otherwise, they talk to USB pretty much the same,
+ * so interface (un)binding, endpoint I/O queues, fault handling, and other
+ * issues can usefully be addressed by this framework.
+ */
 
 // #define	DEBUG			// error path messages, extra info
 // #define	VERBOSE			// more; success messages
@@ -121,24 +38,18 @@
 #   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"
+#include "usbnet.h"
+
+#define DRIVER_VERSION		"22-Aug-2005"
 
 
 /*-------------------------------------------------------------------------*/
@@ -149,15 +60,14 @@
  * 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).
+ *
+ * REVISIT qlens should be members of 'struct usbnet'; the goal is to
+ * let the USB host controller be busy for 5msec or more before an irq
+ * is required, under load.  Jumbograms change the equation.
  */
 #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)
 
@@ -165,9 +75,6 @@
 // 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
 
@@ -176,109 +83,6 @@
 // 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
-#		define EVENT_LINK_RESET	4
-};
-
-// 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 *);
-
-	/* link reset handling, called from defer_kevent */
-	int	(*link_reset)(struct usbnet *);
-
-	/* 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 */
@@ -286,39 +90,10 @@ 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);
-static void defer_kevent (struct usbnet *, int);
-
-/* 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 usbnet_get_endpoints(struct usbnet *dev, struct usb_interface *intf)
 {
 	int				tmp;
 	struct usb_host_interface	*alt = NULL;
@@ -382,6 +157,7 @@ get_endpoints (struct usbnet *dev, struct usb_interface *intf)
 	dev->status = status;
 	return 0;
 }
+EXPORT_SYMBOL_GPL(usbnet_get_endpoints);
 
 static void intr_complete (struct urb *urb, struct pt_regs *regs);
 
@@ -421,7 +197,11 @@ static int init_status (struct usbnet *dev, struct usb_interface *intf)
 	return  0;
 }
 
-static void skb_return (struct usbnet *dev, struct sk_buff *skb)
+/* Passes this packet up the stack, updating its accounting.
+ * Some link protocols batch packets, so their rx_fixup paths
+ * can return clones as well as just modify the original skb.
+ */
+void usbnet_skb_return (struct usbnet *dev, struct sk_buff *skb)
 {
 	int	status;
 
@@ -438,2425 +218,7 @@ static void skb_return (struct usbnet *dev, struct sk_buff *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_READ_MEDIUM_STATUS	0x1a
-#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
-
-/* AX88172 Medium Status Register values */
-#define AX_MEDIUM_FULL_DUPLEX		0x02
-#define AX_MEDIUM_TX_ABORT_ALLOW	0x04
-#define AX_MEDIUM_FLOW_CONTROL_EN	0x10
-
-#define AX_MCAST_FILTER_SIZE		8
-#define AX_MAX_MCAST			64
-
-#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 AX88772_MEDIUM_FULL_DUPLEX	0x0002
-#define AX88772_MEDIUM_RESERVED		0x0004
-#define AX88772_MEDIUM_RX_FC_ENABLE	0x0010
-#define AX88772_MEDIUM_TX_FC_ENABLE	0x0020
-#define AX88772_MEDIUM_PAUSE_FORMAT	0x0080
-#define AX88772_MEDIUM_RX_ENABLE	0x0100
-#define AX88772_MEDIUM_100MB		0x0200
-#define AX88772_MEDIUM_DEFAULT	\
-	(AX88772_MEDIUM_FULL_DUPLEX | AX88772_MEDIUM_RX_FC_ENABLE | \
-	 AX88772_MEDIUM_TX_FC_ENABLE | AX88772_MEDIUM_100MB | \
-	 AX88772_MEDIUM_RESERVED | AX88772_MEDIUM_RX_ENABLE )
-
-#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 ax88172_int_data {
-	u16 res1;
-	u8 link;
-	u16 res2;
-	u8 status;
-	u16 res3;
-} __attribute__ ((packed));
-
-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_status(struct usbnet *dev, struct urb *urb)
-{
-	struct ax88172_int_data *event;
-	int link;
-
-	if (urb->actual_length < 8)
-		return;
-
-	event = urb->transfer_buffer;
-	link = event->link & 0x01;
-	if (netif_carrier_ok(dev->net) != link) {
-		if (link) {
-			netif_carrier_on(dev->net);
-			defer_kevent (dev, EVENT_LINK_RESET );
-		} else
-			netif_carrier_off(dev->net);
-		devdbg(dev, "ax8817x - Link Status is: %d", link);
-	}
-}
-
-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 int ax88172_link_reset(struct usbnet *dev)
-{
-	u16 lpa;
-	u8 mode;
-
-	mode = AX_MEDIUM_TX_ABORT_ALLOW | AX_MEDIUM_FLOW_CONTROL_EN;
-	lpa = ax8817x_mdio_read(dev->net, dev->mii.phy_id, MII_LPA);
-	if (lpa & LPA_DUPLEX)
-		mode |= AX_MEDIUM_FULL_DUPLEX;
-	ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
-
-	return 0;
-}
-
-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;
-
-	get_endpoints(dev,intf);
-
-	buf = kmalloc(ETH_ALEN, GFP_KERNEL);
-	if(!buf) {
-		ret = -ENOMEM;
-		goto out1;
-	}
-
-	/* 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 out2;
-		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 out2;
-	}
-
-	/* 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 out2;
-	}
-	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 out2;
-	} 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 out2;
-	}
-
-	/* 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, BMCR_RESET);
-	ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
-		ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
-	mii_nway_restart(&dev->mii);
-
-	return 0;
-out2:
-	kfree(buf);
-out1:
-	return ret;
-}
-
-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;
-
-	get_endpoints(dev,intf);
-
-	buf = kmalloc(6, GFP_KERNEL);
-	if(!buf) {
-		dbg ("Cannot allocate memory for buffer");
-		ret = -ENOMEM;
-		goto out1;
-	}
-
-	if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
-				     0x00B0, 0, 0, buf)) < 0)
-		goto out2;
-
-	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 out2;
-	}
-
-	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 out2;
-	}
-
-	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 out2;
-	}
-
-	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 out2;
-	}
-
-	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 out2;
-	}
-
-	/* 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 out2;
-	}
-	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 out2;
-	}
-
-	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 out2;
-	}
-
-	/* 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 out2;
-	} 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 out2;
-	}
-	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 out2;
-	}
-	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 out2;
-	}
-	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, BMCR_RESET);
-	ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
-			ADVERTISE_ALL | ADVERTISE_CSMA);
-	mii_nway_restart(&dev->mii);
-
-	if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, AX88772_MEDIUM_DEFAULT, 0, 0, buf)) < 0) {
-		dbg("Write medium mode register: %d", ret);
-		goto out2;
-	}
-
-	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 out2;
-	}
-	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 out2;
-	}
-
-	/* 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 out2;
-	}
-
-	kfree(buf);
-
-	return 0;
-
-out2:
-	kfree(buf);
-out1:
-	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 int ax88772_link_reset(struct usbnet *dev)
-{
-	u16 lpa;
-	u16 mode;
-
-	mode = AX88772_MEDIUM_DEFAULT;
-	lpa = ax8817x_mdio_read(dev->net, dev->mii.phy_id, MII_LPA);
-
-	if ((lpa & LPA_DUPLEX) == 0)
-		mode &= ~AX88772_MEDIUM_FULL_DUPLEX;
-	if ((lpa & LPA_100) == 0)
-		mode &= ~AX88772_MEDIUM_100MB;
-	ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
-
-	return 0;
-}
-
-static const struct driver_info ax8817x_info = {
-	.description = "ASIX AX8817x USB 2.0 Ethernet",
-	.bind = ax8817x_bind,
-	.status = ax8817x_status,
-	.link_reset = ax88172_link_reset,
-	.reset = ax88172_link_reset,
-	.flags =  FLAG_ETHER,
-	.data = 0x00130103,
-};
-
-static const struct driver_info dlink_dub_e100_info = {
-	.description = "DLink DUB-E100 USB Ethernet",
-	.bind = ax8817x_bind,
-	.status = ax8817x_status,
-	.link_reset = ax88172_link_reset,
-	.reset = ax88172_link_reset,
-	.flags =  FLAG_ETHER,
-	.data = 0x009f9d9f,
-};
-
-static const struct driver_info netgear_fa120_info = {
-	.description = "Netgear FA-120 USB Ethernet",
-	.bind = ax8817x_bind,
-	.status = ax8817x_status,
-	.link_reset = ax88172_link_reset,
-	.reset = ax88172_link_reset,
-	.flags =  FLAG_ETHER,
-	.data = 0x00130103,
-};
-
-static const struct driver_info hawking_uf200_info = {
-	.description = "Hawking UF200 USB Ethernet",
-	.bind = ax8817x_bind,
-	.status = ax8817x_status,
-	.link_reset = ax88172_link_reset,
-	.reset = ax88172_link_reset,
-	.flags =  FLAG_ETHER,
-	.data = 0x001f1d1f,
-};
-
-static const struct driver_info ax88772_info = {
-	.description = "ASIX AX88772 USB 2.0 Ethernet",
-	.bind = ax88772_bind,
-	.status = ax8817x_status,
-	.link_reset = ax88772_link_reset,
-	.reset = ax88772_link_reset,
-	.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->ether->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;
-	}
-}
-
-#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 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;
-	}
-}
-
-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, gl_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 (and other such vendors) 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	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)
-
-
-/* Some more recent products using Lineo/Belcarra code will wrongly claim
- * CDC MDLM conformance.  They aren't conformant:  data endpoints live
- * in the control interface, there's no data interface, and it's not used
- * to talk to a cell phone radio.  But at least we can detect these two
- * pseudo-classes, rather than growing this product list with entries for
- * each new nonconformant product (sigh).
- */
-static const u8 safe_guid[16] = {
-	0x5d, 0x34, 0xcf, 0x66, 0x11, 0x18, 0x11, 0xd6,
-	0xa2, 0x1a, 0x00, 0x01, 0x02, 0xca, 0x9a, 0x7f,
-};
-static const u8 blan_guid[16] = {
-	0x74, 0xf0, 0x3d, 0xbd, 0x1e, 0xc1, 0x44, 0x70,
-	0xa3, 0x67, 0x71, 0x34, 0xc9, 0xf5, 0x54, 0x37,
-};
-
-static int blan_mdlm_bind (struct usbnet *dev, struct usb_interface *intf)
-{
-	u8				*buf = intf->cur_altsetting->extra;
-	int				len = intf->cur_altsetting->extralen;
-	struct usb_cdc_mdlm_desc	*desc = NULL;
-	struct usb_cdc_mdlm_detail_desc	*detail = NULL;
-
-	while (len > 3) {
-		if (buf [1] != USB_DT_CS_INTERFACE)
-			goto next_desc;
-
-		/* use bDescriptorSubType, and just verify that we get a
-		 * "BLAN" (or "SAFE") descriptor.
-		 */
-		switch (buf [2]) {
-		case USB_CDC_MDLM_TYPE:
-			if (desc) {
-				dev_dbg (&intf->dev, "extra MDLM\n");
-				goto bad_desc;
-			}
-			desc = (void *) buf;
-			if (desc->bLength != sizeof *desc) {
-				dev_dbg (&intf->dev, "MDLM len %u\n",
-					desc->bLength);
-				goto bad_desc;
-			}
-			/* expect bcdVersion 1.0, ignore */
-			if (memcmp(&desc->bGUID, blan_guid, 16)
-				    && memcmp(&desc->bGUID, safe_guid, 16) ) {
-				/* hey, this one might _really_ be MDLM! */
-				dev_dbg (&intf->dev, "MDLM guid\n");
-				goto bad_desc;
-			}
-			break;
-		case USB_CDC_MDLM_DETAIL_TYPE:
-			if (detail) {
-				dev_dbg (&intf->dev, "extra MDLM detail\n");
-				goto bad_desc;
-			}
-			detail = (void *) buf;
-			switch (detail->bGuidDescriptorType) {
-			case 0:			/* "SAFE" */
-				if (detail->bLength != (sizeof *detail + 2))
-					goto bad_detail;
-				break;
-			case 1:			/* "BLAN" */
-				if (detail->bLength != (sizeof *detail + 3))
-					goto bad_detail;
-				break;
-			default:
-				goto bad_detail;
-			}
-
-			/* assuming we either noticed BLAN already, or will
-			 * find it soon, there are some data bytes here:
-			 *  - bmNetworkCapabilities (unused)
-			 *  - bmDataCapabilities (bits, see below)
-			 *  - bPad (ignored, for PADAFTER -- BLAN-only)
-			 * bits are:
-			 *  - 0x01 -- Zaurus framing (add CRC)
-			 *  - 0x02 -- PADBEFORE (CRC includes some padding)
-			 *  - 0x04 -- PADAFTER (some padding after CRC)
-			 *  - 0x08 -- "fermat" packet mangling (for hw bugs)
-			 * the PADBEFORE appears not to matter; we interop
-			 * with devices that use it and those that don't.
-			 */
-			if ((detail->bDetailData[1] & ~02) != 0x01) {
-				/* bmDataCapabilites == 0 would be fine too,
-				 * but framing is minidriver-coupled for now.
-				 */
-bad_detail:
-				dev_dbg (&intf->dev,
-						"bad MDLM detail, %d %d %d\n",
-						detail->bLength,
-						detail->bDetailData[0],
-						detail->bDetailData[2]);
-				goto bad_desc;
-			}
-			break;
-		}
-next_desc:
-		len -= buf [0];	/* bLength */
-		buf += buf [0];
-	}
-
-	if (!desc || !detail) {
-		dev_dbg (&intf->dev, "missing cdc mdlm %s%sdescriptor\n",
-			desc ? "" : "func ",
-			detail ? "" : "detail ");
-		goto bad_desc;
-	}
-
-	/* There's probably a CDC Ethernet descriptor there, but we can't
-	 * rely on the Ethernet address it provides since not all vendors
-	 * bother to make it unique.  Likewise there's no point in tracking
-	 * of the CDC event notifications.
-	 */
-	return get_endpoints (dev, intf);
-
-bad_desc:
-	dev_info (&dev->udev->dev, "unsupported MDLM descriptors\n");
-	return -ENODEV;
-}
-
-static const struct driver_info	bogus_mdlm_info = {
-	.description =	"pseudo-MDLM (BLAN) device",
-	.flags =	FLAG_FRAMING_Z,
-	.check_connect = always_connected,
-	.tx_fixup = 	zaurus_tx_fixup,
-	.bind =		blan_mdlm_bind,
-};
-
-#else
-
-/* blacklist all those devices */
-#define	ZAURUS_STRONGARM_INFO	0
-#define	ZAURUS_PXA_INFO		0
-#define	OLYMPUS_MXL_INFO	0
-
-#endif
+EXPORT_SYMBOL_GPL(usbnet_skb_return);
 
 
 /*-------------------------------------------------------------------------
@@ -2868,22 +230,12 @@ static const struct driver_info	bogus_mdlm_info = {
 static int usbnet_change_mtu (struct net_device *net, int new_mtu)
 {
 	struct usbnet	*dev = netdev_priv(net);
+	int		ll_mtu = new_mtu + net->hard_header_len;
 
-	if (new_mtu <= MIN_PACKET || new_mtu > MAX_PACKET)
+	if (new_mtu <= 0 || ll_mtu > dev->hard_mtu)
 		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)
+	if ((ll_mtu % dev->maxpacket) == 0)
 		return -EDOM;
 	net->mtu = new_mtu;
 	return 0;
@@ -2922,7 +274,7 @@ static void defer_bh(struct usbnet *dev, struct sk_buff *skb, struct sk_buff_hea
  * 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)
+void usbnet_defer_kevent (struct usbnet *dev, int work)
 {
 	set_bit (work, &dev->flags);
 	if (!schedule_work (&dev->kevent))
@@ -2930,50 +282,24 @@ static void defer_kevent (struct usbnet *dev, int work)
 	else
 		devdbg (dev, "kevent %d scheduled", work);
 }
+EXPORT_SYMBOL_GPL(usbnet_defer_kevent);
 
 /*-------------------------------------------------------------------------*/
 
 static void rx_complete (struct urb *urb, struct pt_regs *regs);
 
-static void rx_submit (struct usbnet *dev, struct urb *urb, int flags)
+static void rx_submit (struct usbnet *dev, struct urb *urb, unsigned 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);
+	size_t			size = dev->rx_urb_size;
 
 	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);
+		usbnet_defer_kevent (dev, EVENT_RX_MEMORY);
 		usb_free_urb (urb);
 		return;
 	}
@@ -2987,7 +313,6 @@ static void rx_submit (struct usbnet *dev, struct urb *urb, int flags)
 
 	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);
 
@@ -2996,10 +321,10 @@ static void rx_submit (struct usbnet *dev, struct urb *urb, int flags)
 			&& !test_bit (EVENT_RX_HALT, &dev->flags)) {
 		switch (retval = usb_submit_urb (urb, GFP_ATOMIC)){ 
 		case -EPIPE:
-			defer_kevent (dev, EVENT_RX_HALT);
+			usbnet_defer_kevent (dev, EVENT_RX_HALT);
 			break;
 		case -ENOMEM:
-			defer_kevent (dev, EVENT_RX_MEMORY);
+			usbnet_defer_kevent (dev, EVENT_RX_MEMORY);
 			break;
 		case -ENODEV:
 			if (netif_msg_ifdown (dev))
@@ -3037,7 +362,7 @@ static inline void rx_process (struct usbnet *dev, struct sk_buff *skb)
 	// else network stack removes extra byte if we forced a short packet
 
 	if (skb->len)
-		skb_return (dev, skb);
+		usbnet_skb_return (dev, skb);
 	else {
 		if (netif_msg_rx_err (dev))
 			devdbg (dev, "drop");
@@ -3063,7 +388,7 @@ static void rx_complete (struct urb *urb, struct pt_regs *regs)
 	switch (urb_status) {
 	    // success
 	    case 0:
-		if (MIN_PACKET > skb->len || skb->len > MAX_PACKET) {
+		if (skb->len < dev->net->hard_header_len) {
 			entry->state = rx_cleanup;
 			dev->stats.rx_errors++;
 			dev->stats.rx_length_errors++;
@@ -3078,7 +403,7 @@ static void rx_complete (struct urb *urb, struct pt_regs *regs)
 	    // storm, recovering as needed.
 	    case -EPIPE:
 		dev->stats.rx_errors++;
-		defer_kevent (dev, EVENT_RX_HALT);
+		usbnet_defer_kevent (dev, EVENT_RX_HALT);
 		// FALLTHROUGH
 
 	    // software-driven interface shutdown
@@ -3320,55 +645,58 @@ done:
 
 /*-------------------------------------------------------------------------*/
 
-static void usbnet_get_drvinfo (struct net_device *net, struct ethtool_drvinfo *info)
+/* ethtool methods; minidrivers may need to add some more, but
+ * they'll probably want to use this base set.
+ */
+
+void usbnet_get_drvinfo (struct net_device *net, struct ethtool_drvinfo *info)
 {
 	struct usbnet *dev = netdev_priv(net);
 
+	/* REVISIT don't always return "usbnet" */
 	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);
 }
+EXPORT_SYMBOL_GPL(usbnet_get_drvinfo);
 
 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 a check_connect is defined, return its result */
 	if (dev->driver_info->check_connect)
 		return dev->driver_info->check_connect (dev) == 0;
 
-	/* Otherwise, we're up to avoid breaking scripts */
+	/* Otherwise, say we're up (to avoid breaking scripts) */
 	return 1;
 }
 
-static u32 usbnet_get_msglevel (struct net_device *net)
+u32 usbnet_get_msglevel (struct net_device *net)
 {
 	struct usbnet *dev = netdev_priv(net);
 
 	return dev->msg_enable;
 }
+EXPORT_SYMBOL_GPL(usbnet_get_msglevel);
 
-static void usbnet_set_msglevel (struct net_device *net, u32 level)
+void usbnet_set_msglevel (struct net_device *net, u32 level)
 {
 	struct usbnet *dev = netdev_priv(net);
 
 	dev->msg_enable = level;
 }
+EXPORT_SYMBOL_GPL(usbnet_set_msglevel);
 
-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;
-}
+/* drivers may override default ethtool_ops 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,
+};
 
 /*-------------------------------------------------------------------------*/
 
@@ -3387,19 +715,24 @@ kevent (void *data)
 	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 (status < 0
+				&& status != -EPIPE
+				&& status != -ESHUTDOWN) {
 			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 (status != -ESHUTDOWN)
+				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 (status < 0
+				&& status != -EPIPE
+				&& status != -ESHUTDOWN) {
 			if (netif_msg_rx_err (dev))
 				deverr (dev, "can't clear rx halt, status %d",
 					status);
@@ -3458,7 +791,7 @@ static void tx_complete (struct urb *urb, struct pt_regs *regs)
 
 		switch (urb->status) {
 		case -EPIPE:
-			defer_kevent (dev, EVENT_TX_HALT);
+			usbnet_defer_kevent (dev, EVENT_TX_HALT);
 			break;
 
 		/* software-driven interface shutdown */
@@ -3515,10 +848,6 @@ static int usbnet_start_xmit (struct sk_buff *skb, struct net_device *net)
 	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
@@ -3544,24 +873,8 @@ static int usbnet_start_xmit (struct sk_buff *skb, struct net_device *net)
 	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
@@ -3574,22 +887,10 @@ static int usbnet_start_xmit (struct sk_buff *skb, struct net_device *net)
 
 	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);
+		usbnet_defer_kevent (dev, EVENT_TX_HALT);
 		break;
 	default:
 		if (netif_msg_tx_err (dev))
@@ -3692,7 +993,7 @@ static void usbnet_bh (unsigned long param)
  
 // precondition: never called in_interrupt
 
-static void usbnet_disconnect (struct usb_interface *intf)
+void usbnet_disconnect (struct usb_interface *intf)
 {
 	struct usbnet		*dev;
 	struct usb_device	*xdev;
@@ -3706,7 +1007,8 @@ static void usbnet_disconnect (struct usb_interface *intf)
 	xdev = interface_to_usbdev (intf);
 
 	if (netif_msg_probe (dev))
-		devinfo (dev, "unregister usbnet usb-%s-%s, %s",
+		devinfo (dev, "unregister '%s' usb-%s-%s, %s",
+			intf->dev.driver->name,
 			xdev->bus->bus_name, xdev->devpath,
 			dev->driver_info->description);
 	
@@ -3722,15 +1024,14 @@ static void usbnet_disconnect (struct usb_interface *intf)
 	free_netdev(net);
 	usb_put_dev (xdev);
 }
+EXPORT_SYMBOL_GPL(usbnet_disconnect);
 
 
 /*-------------------------------------------------------------------------*/
 
-static struct ethtool_ops usbnet_ethtool_ops;
-
 // precondition: never called in_interrupt
 
-static int
+int
 usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
 {
 	struct usbnet			*dev;
@@ -3779,6 +1080,10 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
 	strcpy (net->name, "usb%d");
 	memcpy (net->dev_addr, node_id, sizeof node_id);
 
+	/* rx and tx sides can use different message sizes;
+	 * bind() should set rx_urb_size in that case.
+	 */
+	dev->hard_mtu = net->mtu + net->hard_header_len;
 #if 0
 // dma_supported() is deeply broken on almost all architectures
 	// possible with some EHCI controllers
@@ -3793,7 +1098,6 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
 	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
@@ -3806,8 +1110,12 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
 		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);
+
+		/* maybe the remote can't receive an Ethernet MTU */
+		if (net->mtu > (dev->hard_mtu - net->hard_header_len))
+			net->mtu = dev->hard_mtu - net->hard_header_len;
+	} else if (!info->in || !info->out)
+		status = usbnet_get_endpoints (dev, udev);
 	else {
 		dev->in = usb_rcvbulkpipe (xdev, info->in);
 		dev->out = usb_sndbulkpipe (xdev, info->out);
@@ -3819,12 +1127,13 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
 			status = 0;
 
 	}
-
 	if (status == 0 && dev->status)
 		status = init_status (dev, udev);
 	if (status < 0)
 		goto out1;
 
+	if (!dev->rx_urb_size)
+		dev->rx_urb_size = dev->hard_mtu;
 	dev->maxpacket = usb_maxpacket (dev->udev, dev->out, 1);
 	
 	SET_NETDEV_DEV(net, &udev->dev);
@@ -3832,8 +1141,9 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
 	if (status)
 		goto out3;
 	if (netif_msg_probe (dev))
-		devinfo (dev, "register usbnet at usb-%s-%s, %s, "
+		devinfo (dev, "register '%s' at usb-%s-%s, %s, "
 				"%02x:%02x:%02x:%02x:%02x:%02x",
+			udev->dev.driver->name,
 			xdev->bus->bus_name, xdev->devpath,
 			dev->driver_info->description,
 			net->dev_addr [0], net->dev_addr [1],
@@ -3857,12 +1167,15 @@ out:
 	usb_put_dev(xdev);
 	return status;
 }
+EXPORT_SYMBOL_GPL(usbnet_probe);
 
 /*-------------------------------------------------------------------------*/
 
-#ifdef	CONFIG_PM
+/* FIXME these suspend/resume methods assume non-CDC style
+ * devices, with only one interface.
+ */
 
-static int usbnet_suspend (struct usb_interface *intf, pm_message_t message)
+int usbnet_suspend (struct usb_interface *intf, pm_message_t message)
 {
 	struct usbnet		*dev = usb_get_intfdata(intf);
 	
@@ -3875,8 +1188,9 @@ static int usbnet_suspend (struct usb_interface *intf, pm_message_t message)
 	intf->dev.power.power_state = PMSG_SUSPEND;
 	return 0;
 }
+EXPORT_SYMBOL_GPL(usbnet_suspend);
 
-static int usbnet_resume (struct usb_interface *intf)
+int usbnet_resume (struct usb_interface *intf)
 {
 	struct usbnet		*dev = usb_get_intfdata(intf);
 
@@ -3885,357 +1199,27 @@ static int usbnet_resume (struct usb_interface *intf)
 	tasklet_schedule (&dev->bh);
 	return 0;
 }
+EXPORT_SYMBOL_GPL(usbnet_resume);
 
-#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) PXA units have very different lies
-	 * about their standards support:  they claim to be cell phones with
-	 * direct access to their radios.  (They don't conform to CDC MDLM.)
-	 */
-{
-	USB_INTERFACE_INFO (USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
-			USB_CDC_PROTO_NONE),
-	.driver_info = (unsigned long) &bogus_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)
+static int __init usbnet_init(void)
 {
-	// compiler should optimize these out
+	/* compiler should optimize this 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);
+ 	return 0;
 }
-module_init (usbnet_init);
+module_init(usbnet_init);
 
-static void __exit usbnet_exit (void)
+static void __exit usbnet_exit(void)
 {
- 	usb_deregister (&usbnet_driver);
 }
-module_exit (usbnet_exit);
+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");
+MODULE_AUTHOR("David Brownell");
+MODULE_DESCRIPTION("USB network driver framework");
+MODULE_LICENSE("GPL");