14 files changed, 807 insertions, 82 deletions

diff --git a/drivers/usb/net/Kconfig b/drivers/usb/net/Kconfig
index a2b94ef512b..3de564b2314 100644
--- a/drivers/usb/net/Kconfig
+++ b/drivers/usb/net/Kconfig
@@ -84,6 +84,7 @@ config USB_PEGASUS
 config USB_RTL8150
 	tristate "USB RTL8150 based ethernet device support (EXPERIMENTAL)"
 	depends on EXPERIMENTAL
+	select MII
 	help
 	  Say Y here if you have RTL8150 based usb-ethernet adapter.
 	  Send me <petkan@users.sourceforge.net> any comments you may have.
@@ -98,7 +99,7 @@ config USB_USBNET_MII
 
 config USB_USBNET
 	tristate "Multi-purpose USB Networking Framework"
-	select MII if USBNET_MII != n
+	select MII if USB_USBNET_MII != n
 	---help---
 	  This driver supports several kinds of network links over USB,
 	  with "minidrivers" built around a common network driver core
@@ -185,6 +186,15 @@ config USB_NET_CDCETHER
 	  IEEE 802 "local assignment" bit is set in the address, a "usbX"
 	  name is used instead.
 
+config USB_NET_DM9601
+	tristate "Davicom DM9601 based USB 1.1 10/100 ethernet devices"
+	depends on USB_USBNET
+	select CRC32
+	select USB_USBNET_MII
+	help
+	  This option adds support for Davicom DM9601 based USB 1.1
+	  10/100 Ethernet adapters.
+
 config USB_NET_GL620A
 	tristate "GeneSys GL620USB-A based cables"
 	depends on USB_USBNET
@@ -239,6 +249,7 @@ config USB_NET_RNDIS_HOST
 config USB_NET_CDC_SUBSET
 	tristate "Simple USB Network Links (CDC Ethernet subset)"
 	depends on USB_USBNET
+	default y
 	help
 	  This driver module supports USB network devices that can work
 	  without any device-specific information.  Select it if you have
@@ -298,6 +309,13 @@ config USB_EPSON2888
 	  Choose this option to support the usb networking links used
 	  by some sample firmware from Epson.
 
+config USB_KC2190
+	boolean "KT Technology KC2190 based cables (InstaNet)"
+	depends on USB_NET_CDC_SUBSET && EXPERIMENTAL
+	help
+	  Choose this option if you're using a host-to-host cable
+	  with one of these chips.
+
 config USB_NET_ZAURUS
 	tristate "Sharp Zaurus (stock ROMs) and compatible"
 	depends on USB_USBNET
diff --git a/drivers/usb/net/Makefile b/drivers/usb/net/Makefile
index 7b51964de17..595a539f838 100644
--- a/drivers/usb/net/Makefile
+++ b/drivers/usb/net/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_USB_PEGASUS)	+= pegasus.o
 obj-$(CONFIG_USB_RTL8150)	+= rtl8150.o
 obj-$(CONFIG_USB_NET_AX8817X)	+= asix.o
 obj-$(CONFIG_USB_NET_CDCETHER)	+= cdc_ether.o
+obj-$(CONFIG_USB_NET_DM9601)	+= dm9601.o
 obj-$(CONFIG_USB_NET_GL620A)	+= gl620a.o
 obj-$(CONFIG_USB_NET_NET1080)	+= net1080.o
 obj-$(CONFIG_USB_NET_PLUSB)	+= plusb.o
diff --git a/drivers/usb/net/asix.c b/drivers/usb/net/asix.c
index bd357e178e5..d5ef97bc4d0 100644
--- a/drivers/usb/net/asix.c
+++ b/drivers/usb/net/asix.c
@@ -298,7 +298,7 @@ static int asix_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 		if (ax_skb) {
 			ax_skb->len = size;
 			ax_skb->data = packet;
-			ax_skb->tail = packet + size;
+			skb_set_tail_pointer(ax_skb, size);
 			usbnet_skb_return(dev, ax_skb);
 		} else {
 			return 0;
@@ -338,7 +338,7 @@ static struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *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;
+			skb_set_tail_pointer(skb, skb->len);
 		}
 	} else {
 		struct sk_buff *skb2;
@@ -351,10 +351,12 @@ static struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
 
 	skb_push(skb, 4);
 	packet_len = (((skb->len - 4) ^ 0x0000ffff) << 16) + (skb->len - 4);
-	memcpy(skb->data, &packet_len, sizeof(packet_len));
+	cpu_to_le32s(&packet_len);
+	skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));
 
 	if ((skb->len % 512) == 0) {
-		memcpy( skb->tail, &padbytes, sizeof(padbytes));
+		cpu_to_le32s(&padbytes);
+		memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes));
 		skb_put(skb, sizeof(padbytes));
 	}
 	return skb;
@@ -1393,9 +1395,9 @@ static const struct usb_device_id	products [] = {
 	USB_DEVICE (0x07b8, 0x420a),
 	.driver_info =  (unsigned long) &hawking_uf200_info,
 }, {
-        // Billionton Systems, USB2AR
-        USB_DEVICE (0x08dd, 0x90ff),
-        .driver_info =  (unsigned long) &ax8817x_info,
+	// Billionton Systems, USB2AR
+	USB_DEVICE (0x08dd, 0x90ff),
+	.driver_info =  (unsigned long) &ax8817x_info,
 }, {
 	// ATEN UC210T
 	USB_DEVICE (0x0557, 0x2009),
@@ -1421,9 +1423,13 @@ static const struct usb_device_id	products [] = {
 	USB_DEVICE (0x1631, 0x6200),
 	.driver_info = (unsigned long) &ax8817x_info,
 }, {
+	// JVC MP-PRX1 Port Replicator
+	USB_DEVICE (0x04f1, 0x3008),
+	.driver_info = (unsigned long) &ax8817x_info,
+}, {
 	// ASIX AX88772 10/100
-        USB_DEVICE (0x0b95, 0x7720),
-        .driver_info = (unsigned long) &ax88772_info,
+	USB_DEVICE (0x0b95, 0x7720),
+	.driver_info = (unsigned long) &ax88772_info,
 }, {
 	// ASIX AX88178 10/100/1000
 	USB_DEVICE (0x0b95, 0x1780),
diff --git a/drivers/usb/net/catc.c b/drivers/usb/net/catc.c
index 4852012735f..86e90c59d55 100644
--- a/drivers/usb/net/catc.c
+++ b/drivers/usb/net/catc.c
@@ -255,7 +255,6 @@ static void catc_rx_done(struct urb *urb)
 		if (!(skb = dev_alloc_skb(pkt_len)))
 			return;
 
-		skb->dev = catc->netdev;
 		eth_copy_and_sum(skb, pkt_start + pkt_offset, pkt_len, 0);
 		skb_put(skb, pkt_len);
 
@@ -356,7 +355,7 @@ resubmit:
  * Transmit routines.
  */
 
-static void catc_tx_run(struct catc *catc)
+static int catc_tx_run(struct catc *catc)
 {
 	int status;
 
@@ -374,12 +373,14 @@ static void catc_tx_run(struct catc *catc)
 	catc->tx_ptr = 0;
 
 	catc->netdev->trans_start = jiffies;
+	return status;
 }
 
 static void catc_tx_done(struct urb *urb)
 {
 	struct catc *catc = urb->context;
 	unsigned long flags;
+	int r;
 
 	if (urb->status == -ECONNRESET) {
 		dbg("Tx Reset.");
@@ -398,10 +399,13 @@ static void catc_tx_done(struct urb *urb)
 
 	spin_lock_irqsave(&catc->tx_lock, flags);
 
-	if (catc->tx_ptr)
-		catc_tx_run(catc);
-	else
+	if (catc->tx_ptr) {
+		r = catc_tx_run(catc);
+		if (unlikely(r < 0))
+			clear_bit(TX_RUNNING, &catc->flags);
+	} else {
 		clear_bit(TX_RUNNING, &catc->flags);
+	}
 
 	netif_wake_queue(catc->netdev);
 
@@ -412,6 +416,7 @@ static int catc_hard_start_xmit(struct sk_buff *skb, struct net_device *netdev)
 {
 	struct catc *catc = netdev_priv(netdev);
 	unsigned long flags;
+	int r = 0;
 	char *tx_buf;
 
 	spin_lock_irqsave(&catc->tx_lock, flags);
@@ -419,11 +424,14 @@ static int catc_hard_start_xmit(struct sk_buff *skb, struct net_device *netdev)
 	catc->tx_ptr = (((catc->tx_ptr - 1) >> 6) + 1) << 6;
 	tx_buf = catc->tx_buf[catc->tx_idx] + catc->tx_ptr;
 	*((u16*)tx_buf) = (catc->is_f5u011) ? cpu_to_be16((u16)skb->len) : cpu_to_le16((u16)skb->len);
-	memcpy(tx_buf + 2, skb->data, skb->len);
+	skb_copy_from_linear_data(skb, tx_buf + 2, skb->len);
 	catc->tx_ptr += skb->len + 2;
 
-	if (!test_and_set_bit(TX_RUNNING, &catc->flags))
-		catc_tx_run(catc);
+	if (!test_and_set_bit(TX_RUNNING, &catc->flags)) {
+		r = catc_tx_run(catc);
+		if (r < 0)
+			clear_bit(TX_RUNNING, &catc->flags);
+	}
 
 	if ((catc->is_f5u011 && catc->tx_ptr)
 	     || (catc->tx_ptr >= ((TX_MAX_BURST - 1) * (PKT_SZ + 2))))
@@ -431,8 +439,10 @@ static int catc_hard_start_xmit(struct sk_buff *skb, struct net_device *netdev)
 
 	spin_unlock_irqrestore(&catc->tx_lock, flags);
 
-	catc->stats.tx_bytes += skb->len;
-	catc->stats.tx_packets++;
+	if (r >= 0) {
+		catc->stats.tx_bytes += skb->len;
+		catc->stats.tx_packets++;
+	}
 
 	dev_kfree_skb(skb);
 
diff --git a/drivers/usb/net/cdc_subset.c b/drivers/usb/net/cdc_subset.c
index ae8fb06cf38..bc62b012602 100644
--- a/drivers/usb/net/cdc_subset.c
+++ b/drivers/usb/net/cdc_subset.c
@@ -79,13 +79,19 @@ static int always_connected (struct usbnet *dev)
  *
  * ALi M5632 driver ... does high speed
  *
+ * NOTE that the MS-Windows drivers for this chip use some funky and
+ * (naturally) undocumented 7-byte prefix to each packet, so this is a
+ * case where we don't currently interoperate.  Also, once you unplug
+ * one end of the cable, you need to replug the other end too ... since
+ * chip docs are unavailable, there's no way to reset the relevant state
+ * short of a power cycle.
+ *
  *-------------------------------------------------------------------------*/
 
 static const struct driver_info	ali_m5632_info = {
 	.description =	"ALi M5632",
 };
 
-
 #endif
 
 
@@ -159,6 +165,11 @@ static const struct driver_info	epson2888_info = {
 #endif	/* CONFIG_USB_EPSON2888 */
 
 
+/*-------------------------------------------------------------------------
+ *
+ * info from Jonathan McDowell <noodles@earth.li>
+ *
+ *-------------------------------------------------------------------------*/
 #ifdef CONFIG_USB_KC2190
 #define HAVE_HARDWARE
 static const struct driver_info kc2190_info = {
@@ -223,6 +234,10 @@ static const struct usb_device_id	products [] = {
 	USB_DEVICE (0x0402, 0x5632),	// ALi defaults
 	.driver_info =	(unsigned long) &ali_m5632_info,
 },
+{
+	USB_DEVICE (0x182d,0x207c),	// SiteCom CN-124
+	.driver_info =	(unsigned long) &ali_m5632_info,
+},
 #endif
 
 #ifdef	CONFIG_USB_AN2720
@@ -314,13 +329,13 @@ static struct usb_driver cdc_subset_driver = {
 
 static int __init cdc_subset_init(void)
 {
- 	return usb_register(&cdc_subset_driver);
+	return usb_register(&cdc_subset_driver);
 }
 module_init(cdc_subset_init);
 
 static void __exit cdc_subset_exit(void)
 {
- 	usb_deregister(&cdc_subset_driver);
+	usb_deregister(&cdc_subset_driver);
 }
 module_exit(cdc_subset_exit);
 
diff --git a/drivers/usb/net/dm9601.c b/drivers/usb/net/dm9601.c
new file mode 100644
index 00000000000..a6763860147
--- /dev/null
+++ b/drivers/usb/net/dm9601.c
@@ -0,0 +1,619 @@
+/*
+ * Davicom DM9601 USB 1.1 10/100Mbps ethernet devices
+ *
+ * Peter Korsgaard <jacmet@sunsite.dk>
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2.  This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+//#define DEBUG
+
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/stddef.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/mii.h>
+#include <linux/usb.h>
+#include <linux/crc32.h>
+
+#include "usbnet.h"
+
+/* datasheet:
+ http://www.davicom.com.tw/big5/download/Data%20Sheet/DM9601-DS-P01-930914.pdf
+*/
+
+/* control requests */
+#define DM_READ_REGS	0x00
+#define DM_WRITE_REGS	0x01
+#define DM_READ_MEMS	0x02
+#define DM_WRITE_REG	0x03
+#define DM_WRITE_MEMS	0x05
+#define DM_WRITE_MEM	0x07
+
+/* registers */
+#define DM_NET_CTRL	0x00
+#define DM_RX_CTRL	0x05
+#define DM_SHARED_CTRL	0x0b
+#define DM_SHARED_ADDR	0x0c
+#define DM_SHARED_DATA	0x0d	/* low + high */
+#define DM_PHY_ADDR	0x10	/* 6 bytes */
+#define DM_MCAST_ADDR	0x16	/* 8 bytes */
+#define DM_GPR_CTRL	0x1e
+#define DM_GPR_DATA	0x1f
+
+#define DM_MAX_MCAST	64
+#define DM_MCAST_SIZE	8
+#define DM_EEPROM_LEN	256
+#define DM_TX_OVERHEAD	2	/* 2 byte header */
+#define DM_RX_OVERHEAD	7	/* 3 byte header + 4 byte crc tail */
+#define DM_TIMEOUT	1000
+
+
+static int dm_read(struct usbnet *dev, u8 reg, u16 length, void *data)
+{
+	devdbg(dev, "dm_read() reg=0x%02x length=%d", reg, length);
+	return usb_control_msg(dev->udev,
+			       usb_rcvctrlpipe(dev->udev, 0),
+			       DM_READ_REGS,
+			       USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			       0, reg, data, length, USB_CTRL_SET_TIMEOUT);
+}
+
+static int dm_read_reg(struct usbnet *dev, u8 reg, u8 *value)
+{
+	return dm_read(dev, reg, 1, value);
+}
+
+static int dm_write(struct usbnet *dev, u8 reg, u16 length, void *data)
+{
+	devdbg(dev, "dm_write() reg=0x%02x, length=%d", reg, length);
+	return usb_control_msg(dev->udev,
+			       usb_sndctrlpipe(dev->udev, 0),
+			       DM_WRITE_REGS,
+			       USB_DIR_OUT | USB_TYPE_VENDOR |USB_RECIP_DEVICE,
+			       0, reg, data, length, USB_CTRL_SET_TIMEOUT);
+}
+
+static int dm_write_reg(struct usbnet *dev, u8 reg, u8 value)
+{
+	devdbg(dev, "dm_write_reg() reg=0x%02x, value=0x%02x", reg, value);
+	return usb_control_msg(dev->udev,
+			       usb_sndctrlpipe(dev->udev, 0),
+			       DM_WRITE_REG,
+			       USB_DIR_OUT | USB_TYPE_VENDOR |USB_RECIP_DEVICE,
+			       value, reg, NULL, 0, USB_CTRL_SET_TIMEOUT);
+}
+
+static void dm_write_async_callback(struct urb *urb)
+{
+	struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
+
+	if (urb->status < 0)
+		printk(KERN_DEBUG "dm_write_async_callback() failed with %d",
+		       urb->status);
+
+	kfree(req);
+	usb_free_urb(urb);
+}
+
+static void dm_write_async(struct usbnet *dev, u8 reg, u16 length, void *data)
+{
+	struct usb_ctrlrequest *req;
+	struct urb *urb;
+	int status;
+
+	devdbg(dev, "dm_write_async() reg=0x%02x length=%d", reg, length);
+
+	urb = usb_alloc_urb(0, GFP_ATOMIC);
+	if (!urb) {
+		deverr(dev, "Error allocating URB in dm_write_async!");
+		return;
+	}
+
+	req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
+	if (!req) {
+		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 = DM_WRITE_REGS;
+	req->wValue = 0;
+	req->wIndex = cpu_to_le16(reg);
+	req->wLength = cpu_to_le16(length);
+
+	usb_fill_control_urb(urb, dev->udev,
+			     usb_sndctrlpipe(dev->udev, 0),
+			     (void *)req, data, length,
+			     dm_write_async_callback, req);
+
+	status = usb_submit_urb(urb, GFP_ATOMIC);
+	if (status < 0) {
+		deverr(dev, "Error submitting the control message: status=%d",
+		       status);
+		kfree(req);
+		usb_free_urb(urb);
+	}
+}
+
+static void dm_write_reg_async(struct usbnet *dev, u8 reg, u8 value)
+{
+	struct usb_ctrlrequest *req;
+	struct urb *urb;
+	int status;
+
+	devdbg(dev, "dm_write_reg_async() reg=0x%02x value=0x%02x",
+	       reg, value);
+
+	urb = usb_alloc_urb(0, GFP_ATOMIC);
+	if (!urb) {
+		deverr(dev, "Error allocating URB in dm_write_async!");
+		return;
+	}
+
+	req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
+	if (!req) {
+		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 = DM_WRITE_REG;
+	req->wValue = cpu_to_le16(value);
+	req->wIndex = cpu_to_le16(reg);
+	req->wLength = 0;
+
+	usb_fill_control_urb(urb, dev->udev,
+			     usb_sndctrlpipe(dev->udev, 0),
+			     (void *)req, NULL, 0, dm_write_async_callback, req);
+
+	status = usb_submit_urb(urb, GFP_ATOMIC);
+	if (status < 0) {
+		deverr(dev, "Error submitting the control message: status=%d",
+		       status);
+		kfree(req);
+		usb_free_urb(urb);
+	}
+}
+
+static int dm_read_shared_word(struct usbnet *dev, int phy, u8 reg, u16 *value)
+{
+	int ret, i;
+
+	mutex_lock(&dev->phy_mutex);
+
+	dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg);
+	dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0xc : 0x4);
+
+	for (i = 0; i < DM_TIMEOUT; i++) {
+		u8 tmp;
+
+		udelay(1);
+		ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp);
+		if (ret < 0)
+			goto out;
+
+		/* ready */
+		if ((tmp & 1) == 0)
+			break;
+	}
+
+	if (i == DM_TIMEOUT) {
+		deverr(dev, "%s read timed out!", phy ? "phy" : "eeprom");
+		ret = -EIO;
+		goto out;
+	}
+
+	dm_write_reg(dev, DM_SHARED_CTRL, 0x0);
+	ret = dm_read(dev, DM_SHARED_DATA, 2, value);
+
+	devdbg(dev, "read shared %d 0x%02x returned 0x%04x, %d",
+	       phy, reg, *value, ret);
+
+ out:
+	mutex_unlock(&dev->phy_mutex);
+	return ret;
+}
+
+static int dm_write_shared_word(struct usbnet *dev, int phy, u8 reg, u16 value)
+{
+	int ret, i;
+
+	mutex_lock(&dev->phy_mutex);
+
+	ret = dm_write(dev, DM_SHARED_DATA, 2, &value);
+	if (ret < 0)
+		goto out;
+
+	dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg);
+	dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0x1c : 0x14);
+
+	for (i = 0; i < DM_TIMEOUT; i++) {
+		u8 tmp;
+
+		udelay(1);
+		ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp);
+		if (ret < 0)
+			goto out;
+
+		/* ready */
+		if ((tmp & 1) == 0)
+			break;
+	}
+
+	if (i == DM_TIMEOUT) {
+		deverr(dev, "%s write timed out!", phy ? "phy" : "eeprom");
+		ret = -EIO;
+		goto out;
+	}
+
+	dm_write_reg(dev, DM_SHARED_CTRL, 0x0);
+
+out:
+	mutex_unlock(&dev->phy_mutex);
+	return ret;
+}
+
+static int dm_read_eeprom_word(struct usbnet *dev, u8 offset, void *value)
+{
+	return dm_read_shared_word(dev, 0, offset, value);
+}
+
+
+
+static int dm9601_get_eeprom_len(struct net_device *dev)
+{
+	return DM_EEPROM_LEN;
+}
+
+static int dm9601_get_eeprom(struct net_device *net,
+			     struct ethtool_eeprom *eeprom, u8 * data)
+{
+	struct usbnet *dev = netdev_priv(net);
+	u16 *ebuf = (u16 *) data;
+	int i;
+
+	/* access is 16bit */
+	if ((eeprom->offset % 2) || (eeprom->len % 2))
+		return -EINVAL;
+
+	for (i = 0; i < eeprom->len / 2; i++) {
+		if (dm_read_eeprom_word(dev, eeprom->offset / 2 + i,
+					&ebuf[i]) < 0)
+			return -EINVAL;
+	}
+	return 0;
+}
+
+static int dm9601_mdio_read(struct net_device *netdev, int phy_id, int loc)
+{
+	struct usbnet *dev = netdev_priv(netdev);
+
+	u16 res;
+
+	if (phy_id) {
+		devdbg(dev, "Only internal phy supported");
+		return 0;
+	}
+
+	dm_read_shared_word(dev, 1, loc, &res);
+
+	devdbg(dev,
+	       "dm9601_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x",
+	       phy_id, loc, le16_to_cpu(res));
+
+	return le16_to_cpu(res);
+}
+
+static void dm9601_mdio_write(struct net_device *netdev, int phy_id, int loc,
+			      int val)
+{
+	struct usbnet *dev = netdev_priv(netdev);
+	u16 res = cpu_to_le16(val);
+
+	if (phy_id) {
+		devdbg(dev, "Only internal phy supported");
+		return;
+	}
+
+	devdbg(dev,"dm9601_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x",
+	       phy_id, loc, val);
+
+	dm_write_shared_word(dev, 1, loc, res);
+}
+
+static void dm9601_get_drvinfo(struct net_device *net,
+			       struct ethtool_drvinfo *info)
+{
+	/* Inherit standard device info */
+	usbnet_get_drvinfo(net, info);
+	info->eedump_len = DM_EEPROM_LEN;
+}
+
+static u32 dm9601_get_link(struct net_device *net)
+{
+	struct usbnet *dev = netdev_priv(net);
+
+	return mii_link_ok(&dev->mii);
+}
+
+static int dm9601_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
+{
+	struct usbnet *dev = netdev_priv(net);
+
+	return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
+}
+
+static struct ethtool_ops dm9601_ethtool_ops = {
+	.get_drvinfo	= dm9601_get_drvinfo,
+	.get_link	= dm9601_get_link,
+	.get_msglevel	= usbnet_get_msglevel,
+	.set_msglevel	= usbnet_set_msglevel,
+	.get_eeprom_len	= dm9601_get_eeprom_len,
+	.get_eeprom	= dm9601_get_eeprom,
+	.get_settings	= usbnet_get_settings,
+	.set_settings	= usbnet_set_settings,
+	.nway_reset	= usbnet_nway_reset,
+};
+
+static void dm9601_set_multicast(struct net_device *net)
+{
+	struct usbnet *dev = netdev_priv(net);
+	/* We use the 20 byte dev->data for our 8 byte filter buffer
+	 * to avoid allocating memory that is tricky to free later */
+	u8 *hashes = (u8 *) & dev->data;
+	u8 rx_ctl = 0x01;
+
+	memset(hashes, 0x00, DM_MCAST_SIZE);
+	hashes[DM_MCAST_SIZE - 1] |= 0x80;	/* broadcast address */
+
+	if (net->flags & IFF_PROMISC) {
+		rx_ctl |= 0x02;
+	} else if (net->flags & IFF_ALLMULTI || net->mc_count > DM_MAX_MCAST) {
+		rx_ctl |= 0x04;
+	} else if (net->mc_count) {
+		struct dev_mc_list *mc_list = net->mc_list;
+		int i;
+
+		for (i = 0; i < net->mc_count; i++) {
+			u32 crc = ether_crc(ETH_ALEN, mc_list->dmi_addr) >> 26;
+			hashes[crc >> 3] |= 1 << (crc & 0x7);
+		}
+	}
+
+	dm_write_async(dev, DM_MCAST_ADDR, DM_MCAST_SIZE, hashes);
+	dm_write_reg_async(dev, DM_RX_CTRL, rx_ctl);
+}
+
+static int dm9601_bind(struct usbnet *dev, struct usb_interface *intf)
+{
+	int ret;
+
+	ret = usbnet_get_endpoints(dev, intf);
+	if (ret)
+		goto out;
+
+	dev->net->do_ioctl = dm9601_ioctl;
+	dev->net->set_multicast_list = dm9601_set_multicast;
+	dev->net->ethtool_ops = &dm9601_ethtool_ops;
+	dev->net->hard_header_len += DM_TX_OVERHEAD;
+	dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
+	dev->rx_urb_size = dev->net->mtu + DM_RX_OVERHEAD;
+
+	dev->mii.dev = dev->net;
+	dev->mii.mdio_read = dm9601_mdio_read;
+	dev->mii.mdio_write = dm9601_mdio_write;
+	dev->mii.phy_id_mask = 0x1f;
+	dev->mii.reg_num_mask = 0x1f;
+
+	/* reset */
+	ret = dm_write_reg(dev, DM_NET_CTRL, 1);
+	udelay(20);
+
+	/* read MAC */
+	ret = dm_read(dev, DM_PHY_ADDR, ETH_ALEN, dev->net->dev_addr);
+	if (ret < 0) {
+		printk(KERN_ERR "Error reading MAC address\n");
+		ret = -ENODEV;
+		goto out;
+	}
+
+
+	/* power up phy */
+	dm_write_reg(dev, DM_GPR_CTRL, 1);
+	dm_write_reg(dev, DM_GPR_DATA, 0);
+
+	/* receive broadcast packets */
+	dm9601_set_multicast(dev->net);
+
+	dm9601_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
+	dm9601_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
+			  ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
+	mii_nway_restart(&dev->mii);
+
+out:
+	return ret;
+}
+
+static int dm9601_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
+{
+	u8 status;
+	int len;
+
+	/* format:
+	   b0: rx status
+	   b1: packet length (incl crc) low
+	   b2: packet length (incl crc) high
+	   b3..n-4: packet data
+	   bn-3..bn: ethernet crc
+	 */
+
+	if (unlikely(skb->len < DM_RX_OVERHEAD)) {
+		dev_err(&dev->udev->dev, "unexpected tiny rx frame\n");
+		return 0;
+	}
+
+	status = skb->data[0];
+	len = (skb->data[1] | (skb->data[2] << 8)) - 4;
+
+	if (unlikely(status & 0xbf)) {
+		if (status & 0x01) dev->stats.rx_fifo_errors++;
+		if (status & 0x02) dev->stats.rx_crc_errors++;
+		if (status & 0x04) dev->stats.rx_frame_errors++;
+		if (status & 0x20) dev->stats.rx_missed_errors++;
+		if (status & 0x90) dev->stats.rx_length_errors++;
+		return 0;
+	}
+
+	skb_pull(skb, 3);
+	skb_trim(skb, len);
+
+	return 1;
+}
+
+static struct sk_buff *dm9601_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
+				       gfp_t flags)
+{
+	int len;
+
+	/* format:
+	   b0: packet length low
+	   b1: packet length high
+	   b3..n: packet data
+	*/
+
+	if (skb_headroom(skb) < DM_TX_OVERHEAD) {
+		struct sk_buff *skb2;
+
+		skb2 = skb_copy_expand(skb, DM_TX_OVERHEAD, 0, flags);
+		dev_kfree_skb_any(skb);
+		skb = skb2;
+		if (!skb)
+			return NULL;
+	}
+
+	__skb_push(skb, DM_TX_OVERHEAD);
+
+	len = skb->len;
+	/* usbnet adds padding if length is a multiple of packet size
+	   if so, adjust length value in header */
+	if ((len % dev->maxpacket) == 0)
+		len++;
+
+	skb->data[0] = len;
+	skb->data[1] = len >> 8;
+
+	return skb;
+}
+
+static void dm9601_status(struct usbnet *dev, struct urb *urb)
+{
+	int link;
+	u8 *buf;
+
+	/* format:
+	   b0: net status
+	   b1: tx status 1
+	   b2: tx status 2
+	   b3: rx status
+	   b4: rx overflow
+	   b5: rx count
+	   b6: tx count
+	   b7: gpr
+	*/
+
+	if (urb->actual_length < 8)
+		return;
+
+	buf = urb->transfer_buffer;
+
+	link = !!(buf[0] & 0x40);
+	if (netif_carrier_ok(dev->net) != link) {
+		if (link) {
+			netif_carrier_on(dev->net);
+			usbnet_defer_kevent (dev, EVENT_LINK_RESET);
+		}
+		else
+			netif_carrier_off(dev->net);
+		devdbg(dev, "Link Status is: %d", link);
+	}
+}
+
+static int dm9601_link_reset(struct usbnet *dev)
+{
+	struct ethtool_cmd ecmd;
+
+	mii_check_media(&dev->mii, 1, 1);
+	mii_ethtool_gset(&dev->mii, &ecmd);
+
+	devdbg(dev, "link_reset() speed: %d duplex: %d",
+	       ecmd.speed, ecmd.duplex);
+
+	return 0;
+}
+
+static const struct driver_info dm9601_info = {
+	.description	= "Davicom DM9601 USB Ethernet",
+	.flags		= FLAG_ETHER,
+	.bind		= dm9601_bind,
+	.rx_fixup	= dm9601_rx_fixup,
+	.tx_fixup	= dm9601_tx_fixup,
+	.status		= dm9601_status,
+	.link_reset	= dm9601_link_reset,
+	.reset		= dm9601_link_reset,
+};
+
+static const struct usb_device_id products[] = {
+	{
+	 USB_DEVICE(0x07aa, 0x9601),	/* Corega FEther USB-TXC */
+	 .driver_info = (unsigned long)&dm9601_info,
+	 },
+	{
+	 USB_DEVICE(0x0a46, 0x9601),	/* Davicom USB-100 */
+	 .driver_info = (unsigned long)&dm9601_info,
+	 },
+	{
+	 USB_DEVICE(0x0a46, 0x6688),	/* ZT6688 USB NIC */
+	 .driver_info = (unsigned long)&dm9601_info,
+	 },
+	{
+	 USB_DEVICE(0x0a46, 0x0268),	/* ShanTou ST268 USB NIC */
+	 .driver_info = (unsigned long)&dm9601_info,
+	 },
+	{},			// END
+};
+
+MODULE_DEVICE_TABLE(usb, products);
+
+static struct usb_driver dm9601_driver = {
+	.name = "dm9601",
+	.id_table = products,
+	.probe = usbnet_probe,
+	.disconnect = usbnet_disconnect,
+	.suspend = usbnet_suspend,
+	.resume = usbnet_resume,
+};
+
+static int __init dm9601_init(void)
+{
+	return usb_register(&dm9601_driver);
+}
+
+static void __exit dm9601_exit(void)
+{
+	usb_deregister(&dm9601_driver);
+}
+
+module_init(dm9601_init);
+module_exit(dm9601_exit);
+
+MODULE_AUTHOR("Peter Korsgaard <jacmet@sunsite.dk>");
+MODULE_DESCRIPTION("Davicom DM9601 USB 1.1 ethernet devices");
+MODULE_LICENSE("GPL");
diff --git a/drivers/usb/net/gl620a.c b/drivers/usb/net/gl620a.c
index d257a8e026d..031cf5ca4db 100644
--- a/drivers/usb/net/gl620a.c
+++ b/drivers/usb/net/gl620a.c
@@ -157,7 +157,7 @@ genelink_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
 		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;
+			skb_set_tail_pointer(skb, skb->len);
 		}
 	} else {
 		struct sk_buff	*skb2;
diff --git a/drivers/usb/net/kaweth.c b/drivers/usb/net/kaweth.c
index de95268ae4b..a0cc05d21a6 100644
--- a/drivers/usb/net/kaweth.c
+++ b/drivers/usb/net/kaweth.c
@@ -636,8 +636,6 @@ static void kaweth_usb_receive(struct urb *urb)
 
 		skb_reserve(skb, 2);    /* Align IP on 16 byte boundaries */
 
-		skb->dev = net;
-
 		eth_copy_and_sum(skb, kaweth->rx_buf + 2, pkt_len, 0);
 
 		skb_put(skb, pkt_len);
diff --git a/drivers/usb/net/net1080.c b/drivers/usb/net/net1080.c
index ccebfdef475..19bf8dae70c 100644
--- a/drivers/usb/net/net1080.c
+++ b/drivers/usb/net/net1080.c
@@ -520,7 +520,7 @@ net1080_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
 			skb->data = memmove(skb->head
 						+ sizeof (struct nc_header),
 					    skb->data, skb->len);
-			skb->tail = skb->data + len;
+			skb_set_tail_pointer(skb, len);
 			goto encapsulate;
 		}
 	}
diff --git a/drivers/usb/net/pegasus.c b/drivers/usb/net/pegasus.c
index d48c024cff5..a05fd97e5bc 100644
--- a/drivers/usb/net/pegasus.c
+++ b/drivers/usb/net/pegasus.c
@@ -316,6 +316,7 @@ static int update_eth_regs_async(pegasus_t * pegasus)
 	return ret;
 }
 
+/* Returns 0 on success, error on failure */
 static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd)
 {
 	int i;
@@ -574,7 +575,6 @@ static void fill_skb_pool(pegasus_t * pegasus)
 		 */
 		if (pegasus->rx_pool[i] == NULL)
 			return;
-		pegasus->rx_pool[i]->dev = pegasus->net;
 		skb_reserve(pegasus->rx_pool[i], 2);
 	}
 }
@@ -847,10 +847,6 @@ static void intr_callback(struct urb *urb)
 		 * d[0].NO_CARRIER kicks in only with failed TX.
 		 * ... so monitoring with MII may be safest.
 		 */
-		if (d[0] & NO_CARRIER)
-			netif_carrier_off(net);	
-		else
-			netif_carrier_on(net);
 
 		/* bytes 3-4 == rx_lostpkt, reg 2E/2F */
 		pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
@@ -883,7 +879,7 @@ static int pegasus_start_xmit(struct sk_buff *skb, struct net_device *net)
 	netif_stop_queue(net);
 
 	((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
-	memcpy(pegasus->tx_buff + 2, skb->data, skb->len);
+	skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len);
 	usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
 			  usb_sndbulkpipe(pegasus->usb, 2),
 			  pegasus->tx_buff, count,
@@ -950,7 +946,7 @@ static void set_carrier(struct net_device *net)
 	pegasus_t *pegasus = netdev_priv(net);
 	u16 tmp;
 
-	if (!read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
+	if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
 		return;
 
 	if (tmp & BMSR_LSTATUS)
@@ -1408,8 +1404,10 @@ static void pegasus_disconnect(struct usb_interface *intf)
 	unlink_all_urbs(pegasus);
 	free_all_urbs(pegasus);
 	free_skb_pool(pegasus);
-	if (pegasus->rx_skb)
+	if (pegasus->rx_skb != NULL) {
 		dev_kfree_skb(pegasus->rx_skb);
+		pegasus->rx_skb = NULL;
+	}
 	free_netdev(pegasus->net);
 }
 
diff --git a/drivers/usb/net/rndis_host.c b/drivers/usb/net/rndis_host.c
index 39a21c74fdf..980e4aaa97a 100644
--- a/drivers/usb/net/rndis_host.c
+++ b/drivers/usb/net/rndis_host.c
@@ -253,6 +253,7 @@ struct rndis_keepalive_c {	/* IN (optionally OUT) */
  * of that mess as possible.
  */
 #define OID_802_3_PERMANENT_ADDRESS	ccpu2(0x01010101)
+#define OID_GEN_MAXIMUM_FRAME_SIZE	ccpu2(0x00010106)
 #define OID_GEN_CURRENT_PACKET_FILTER	ccpu2(0x0001010e)
 
 /*
@@ -349,7 +350,7 @@ static int rndis_command(struct usbnet *dev, struct rndis_msg_hdr *buf)
 			case RNDIS_MSG_INDICATE: {	/* fault */
 				// struct rndis_indicate *msg = (void *)buf;
 				dev_info(&info->control->dev,
-					 "rndis fault indication\n");
+					"rndis fault indication\n");
 				}
 				break;
 			case RNDIS_MSG_KEEPALIVE: {	/* ping *