[PATCH] wireless: move zd1201 where it belongs

zd1201 is wifi adapter, yet it is hiding in drivers/usb/net where
noone can find it. This moves Kconfig/Makefile zd1201 to the right
place.

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 1929 insertions, 0 deletions

diff --git a/drivers/net/wireless/zd1201.c b/drivers/net/wireless/zd1201.c
new file mode 100644
index 0000000..662ecc8
--- /dev/null
+++ b/drivers/net/wireless/zd1201.c
@@ -0,0 +1,1929 @@
+/*
+ *	Driver for ZyDAS zd1201 based wireless USB devices.
+ *
+ *	Copyright (c) 2004, 2005 Jeroen Vreeken (pe1rxq@amsat.org)
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License
+ *	version 2 as published by the Free Software Foundation.
+ *
+ *	Parts of this driver have been derived from a wlan-ng version
+ *	modified by ZyDAS. They also made documentation available, thanks!
+ *	Copyright (C) 1999 AbsoluteValue Systems, Inc.  All Rights Reserved.
+ */
+
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/wireless.h>
+#include <net/iw_handler.h>
+#include <linux/string.h>
+#include <linux/if_arp.h>
+#include <linux/firmware.h>
+#include <net/ieee80211.h>
+#include "zd1201.h"
+
+static struct usb_device_id zd1201_table[] = {
+	{USB_DEVICE(0x0586, 0x3400)}, /* Peabird Wireless USB Adapter */
+	{USB_DEVICE(0x0ace, 0x1201)}, /* ZyDAS ZD1201 Wireless USB Adapter */
+	{USB_DEVICE(0x050d, 0x6051)}, /* Belkin F5D6051 usb  adapter */
+	{USB_DEVICE(0x0db0, 0x6823)}, /* MSI UB11B usb  adapter */
+	{USB_DEVICE(0x1044, 0x8005)}, /* GIGABYTE GN-WLBZ201 usb adapter */
+	{}
+};
+
+static int ap;	/* Are we an AP or a normal station? */
+
+#define ZD1201_VERSION	"0.15"
+
+MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>");
+MODULE_DESCRIPTION("Driver for ZyDAS ZD1201 based USB Wireless adapters");
+MODULE_VERSION(ZD1201_VERSION);
+MODULE_LICENSE("GPL");
+module_param(ap, int, 0);
+MODULE_PARM_DESC(ap, "If non-zero Access Point firmware will be loaded");
+MODULE_DEVICE_TABLE(usb, zd1201_table);
+
+
+static int zd1201_fw_upload(struct usb_device *dev, int apfw)
+{
+	const struct firmware *fw_entry;
+	char *data;
+	unsigned long len;
+	int err;
+	unsigned char ret;
+	char *buf;
+	char *fwfile;
+
+	if (apfw)
+		fwfile = "zd1201-ap.fw";
+	else
+		fwfile = "zd1201.fw";
+
+	err = request_firmware(&fw_entry, fwfile, &dev->dev);
+	if (err) {
+		dev_err(&dev->dev, "Failed to load %s firmware file!\n", fwfile);
+		dev_err(&dev->dev, "Make sure the hotplug firmware loader is installed.\n");
+		dev_err(&dev->dev, "Goto http://linux-lc100020.sourceforge.net for more info.\n");
+		return err;
+	}
+
+	data = fw_entry->data;
+        len = fw_entry->size;
+
+	buf = kmalloc(1024, GFP_ATOMIC);
+	if (!buf)
+		goto exit;
+	
+	while (len > 0) {
+		int translen = (len > 1024) ? 1024 : len;
+		memcpy(buf, data, translen);
+
+		err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0,
+		    USB_DIR_OUT | 0x40, 0, 0, buf, translen,
+		    ZD1201_FW_TIMEOUT);
+		if (err < 0)
+			goto exit;
+
+		len -= translen;
+		data += translen;
+	}
+                                        
+	err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0x2,
+	    USB_DIR_OUT | 0x40, 0, 0, NULL, 0, ZD1201_FW_TIMEOUT);
+	if (err < 0)
+		goto exit;
+
+	err = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 0x4,
+	    USB_DIR_IN | 0x40, 0,0, &ret, sizeof(ret), ZD1201_FW_TIMEOUT);
+	if (err < 0)
+		goto exit;
+
+	if (ret & 0x80) {
+		err = -EIO;
+		goto exit;
+	}
+
+	err = 0;
+exit:
+	kfree(buf);
+	release_firmware(fw_entry);
+	return err;
+}
+
+static void zd1201_usbfree(struct urb *urb, struct pt_regs *regs)
+{
+	struct zd1201 *zd = urb->context;
+
+	switch(urb->status) {
+		case -EILSEQ:
+		case -ENODEV:
+		case -ETIMEDOUT:
+		case -ENOENT:
+		case -EPIPE:
+		case -EOVERFLOW:
+		case -ESHUTDOWN:
+			dev_warn(&zd->usb->dev, "%s: urb failed: %d\n", 
+			    zd->dev->name, urb->status);
+	}
+
+	kfree(urb->transfer_buffer);
+	usb_free_urb(urb);
+	return;
+}
+
+/* cmdreq message: 
+	u32 type
+	u16 cmd
+	u16 parm0
+	u16 parm1
+	u16 parm2
+	u8  pad[4]
+
+	total: 4 + 2 + 2 + 2 + 2 + 4 = 16
+*/
+static int zd1201_docmd(struct zd1201 *zd, int cmd, int parm0,
+			int parm1, int parm2)
+{
+	unsigned char *command;
+	int ret;
+	struct urb *urb;
+
+	command = kmalloc(16, GFP_ATOMIC);
+	if (!command)
+		return -ENOMEM;
+
+	*((__le32*)command) = cpu_to_le32(ZD1201_USB_CMDREQ);
+	*((__le16*)&command[4]) = cpu_to_le16(cmd);
+	*((__le16*)&command[6]) = cpu_to_le16(parm0);
+	*((__le16*)&command[8]) = cpu_to_le16(parm1);
+	*((__le16*)&command[10])= cpu_to_le16(parm2);
+
+	urb = usb_alloc_urb(0, GFP_ATOMIC);
+	if (!urb) {
+		kfree(command);
+		return -ENOMEM;
+	}
+	usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
+			  command, 16, zd1201_usbfree, zd);
+	ret = usb_submit_urb(urb, GFP_ATOMIC);
+	if (ret) {
+		kfree(command);
+		usb_free_urb(urb);
+	}
+
+	return ret;
+}
+
+/* Callback after sending out a packet */
+static void zd1201_usbtx(struct urb *urb, struct pt_regs *regs)
+{
+	struct zd1201 *zd = urb->context;
+	netif_wake_queue(zd->dev);
+	return;
+}
+
+/* Incoming data */
+static void zd1201_usbrx(struct urb *urb, struct pt_regs *regs)
+{
+	struct zd1201 *zd = urb->context;
+	int free = 0;
+	unsigned char *data = urb->transfer_buffer;
+	struct sk_buff *skb;
+	unsigned char type;
+
+	if (!zd) {
+		free = 1;
+		goto exit;
+	}
+
+	switch(urb->status) {
+		case -EILSEQ:
+		case -ENODEV:
+		case -ETIMEDOUT:
+		case -ENOENT:
+		case -EPIPE:
+		case -EOVERFLOW:
+		case -ESHUTDOWN:
+			dev_warn(&zd->usb->dev, "%s: rx urb failed: %d\n",
+			    zd->dev->name, urb->status);
+			free = 1;
+			goto exit;
+	}
+	
+	if (urb->status != 0 || urb->actual_length == 0)
+		goto resubmit;
+
+	type = data[0];
+	if (type == ZD1201_PACKET_EVENTSTAT || type == ZD1201_PACKET_RESOURCE) {
+		memcpy(zd->rxdata, data, urb->actual_length);
+		zd->rxlen = urb->actual_length;
+		zd->rxdatas = 1;
+		wake_up(&zd->rxdataq);
+	}
+	/* Info frame */
+	if (type == ZD1201_PACKET_INQUIRE) {
+		int i = 0;
+		unsigned short infotype, framelen, copylen;
+		framelen = le16_to_cpu(*(__le16*)&data[4]);
+		infotype = le16_to_cpu(*(__le16*)&data[6]);
+
+		if (infotype == ZD1201_INF_LINKSTATUS) {
+			short linkstatus;
+
+			linkstatus = le16_to_cpu(*(__le16*)&data[8]);
+			switch(linkstatus) {
+				case 1:
+					netif_carrier_on(zd->dev);
+					break;
+				case 2:
+					netif_carrier_off(zd->dev);
+					break;
+				case 3:
+					netif_carrier_off(zd->dev);
+					break;
+				case 4:
+					netif_carrier_on(zd->dev);
+					break;
+				default:
+					netif_carrier_off(zd->dev);
+			}
+			goto resubmit;
+		}
+		if (infotype == ZD1201_INF_ASSOCSTATUS) {
+			short status = le16_to_cpu(*(__le16*)(data+8));
+			int event;
+			union iwreq_data wrqu;
+
+			switch (status) {
+				case ZD1201_ASSOCSTATUS_STAASSOC:
+				case ZD1201_ASSOCSTATUS_REASSOC:
+					event = IWEVREGISTERED;
+					break;
+				case ZD1201_ASSOCSTATUS_DISASSOC:
+				case ZD1201_ASSOCSTATUS_ASSOCFAIL:
+				case ZD1201_ASSOCSTATUS_AUTHFAIL:
+				default:
+					event = IWEVEXPIRED;
+			}
+			memcpy(wrqu.addr.sa_data, data+10, ETH_ALEN);
+			wrqu.addr.sa_family = ARPHRD_ETHER;
+
+			/* Send event to user space */
+			wireless_send_event(zd->dev, event, &wrqu, NULL);
+
+			goto resubmit;
+		}
+		if (infotype == ZD1201_INF_AUTHREQ) {
+			union iwreq_data wrqu;
+
+			memcpy(wrqu.addr.sa_data, data+8, ETH_ALEN);
+			wrqu.addr.sa_family = ARPHRD_ETHER;
+			/* There isn't a event that trully fits this request.
+			   We assume that userspace will be smart enough to
+			   see a new station being expired and sends back a
+			   authstation ioctl to authorize it. */
+			wireless_send_event(zd->dev, IWEVEXPIRED, &wrqu, NULL);
+			goto resubmit;
+		}
+		/* Other infotypes are handled outside this handler */
+		zd->rxlen = 0;
+		while (i < urb->actual_length) {
+			copylen = le16_to_cpu(*(__le16*)&data[i+2]);
+			/* Sanity check, sometimes we get junk */
+			if (copylen+zd->rxlen > sizeof(zd->rxdata))
+				break;
+			memcpy(zd->rxdata+zd->rxlen, data+i+4, copylen);
+			zd->rxlen += copylen;
+			i += 64;
+		}
+		if (i >= urb->actual_length) {
+			zd->rxdatas = 1;
+			wake_up(&zd->rxdataq);
+		}
+		goto  resubmit;
+	}
+	/* Actual data */
+	if (data[urb->actual_length-1] == ZD1201_PACKET_RXDATA) {
+		int datalen = urb->actual_length-1;
+		unsigned short len, fc, seq;
+		struct hlist_node *node;
+
+		len = ntohs(*(__be16 *)&data[datalen-2]);
+		if (len>datalen)
+			len=datalen;
+		fc = le16_to_cpu(*(__le16 *)&data[datalen-16]);
+		seq = le16_to_cpu(*(__le16 *)&data[datalen-24]);
+
+		if (zd->monitor) {
+			if (datalen < 24)
+				goto resubmit;
+			if (!(skb = dev_alloc_skb(datalen+24)))
+				goto resubmit;
+			
+			memcpy(skb_put(skb, 2), &data[datalen-16], 2);
+			memcpy(skb_put(skb, 2), &data[datalen-2], 2);
+			memcpy(skb_put(skb, 6), &data[datalen-14], 6);
+			memcpy(skb_put(skb, 6), &data[datalen-22], 6);
+			memcpy(skb_put(skb, 6), &data[datalen-8], 6);
+			memcpy(skb_put(skb, 2), &data[datalen-24], 2);
+			memcpy(skb_put(skb, len), data, len);
+			skb->dev = zd->dev;
+			skb->dev->last_rx = jiffies;
+			skb->protocol = eth_type_trans(skb, zd->dev);
+			zd->stats.rx_packets++;
+			zd->stats.rx_bytes += skb->len;
+			netif_rx(skb);
+			goto resubmit;
+		}
+			
+		if ((seq & IEEE80211_SCTL_FRAG) ||
+		    (fc & IEEE80211_FCTL_MOREFRAGS)) {
+			struct zd1201_frag *frag = NULL;
+			char *ptr;
+
+			if (datalen<14)
+				goto resubmit;
+			if ((seq & IEEE80211_SCTL_FRAG) == 0) {
+				frag = kmalloc(sizeof(*frag), GFP_ATOMIC);
+				if (!frag)
+					goto resubmit;
+				skb = dev_alloc_skb(IEEE80211_DATA_LEN +14+2);
+				if (!skb) {
+					kfree(frag);
+					goto resubmit;
+				}
+				frag->skb = skb;
+				frag->seq = seq & IEEE80211_SCTL_SEQ;
+				skb_reserve(skb, 2);
+				memcpy(skb_put(skb, 12), &data[datalen-14], 12);
+				memcpy(skb_put(skb, 2), &data[6], 2);
+				memcpy(skb_put(skb, len), data+8, len);
+				hlist_add_head(&frag->fnode, &zd->fraglist);
+				goto resubmit;
+			}
+			hlist_for_each_entry(frag, node, &zd->fraglist, fnode)
+				if (frag->seq == (seq&IEEE80211_SCTL_SEQ))
+					break;
+			if (!frag)
+				goto resubmit;
+			skb = frag->skb;
+			ptr = skb_put(skb, len);
+			if (ptr)
+				memcpy(ptr, data+8, len);
+			if (fc & IEEE80211_FCTL_MOREFRAGS)
+				goto resubmit;
+			hlist_del_init(&frag->fnode);
+			kfree(frag);
+		} else {
+			if (datalen<14)
+				goto resubmit;
+			skb = dev_alloc_skb(len + 14 + 2);
+			if (!skb)
+				goto resubmit;
+			skb_reserve(skb, 2);
+			memcpy(skb_put(skb, 12), &data[datalen-14], 12);
+			memcpy(skb_put(skb, 2), &data[6], 2);
+			memcpy(skb_put(skb, len), data+8, len);
+		}
+		skb->dev = zd->dev;
+		skb->dev->last_rx = jiffies;
+		skb->protocol = eth_type_trans(skb, zd->dev);
+		zd->stats.rx_packets++;
+		zd->stats.rx_bytes += skb->len;
+		netif_rx(skb);
+	}
+resubmit:
+	memset(data, 0, ZD1201_RXSIZE);
+
+	urb->status = 0;
+	urb->dev = zd->usb;
+	if(usb_submit_urb(urb, GFP_ATOMIC))
+		free = 1;
+
+exit:
+	if (free) {
+		zd->rxlen = 0;
+		zd->rxdatas = 1;
+		wake_up(&zd->rxdataq);
+		kfree(urb->transfer_buffer);
+	}
+	return;
+}
+
+static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
+	unsigned int riddatalen)
+{
+	int err;
+	int i = 0;
+	int code;
+	int rid_fid;
+	int length;
+	unsigned char *pdata;
+
+	zd->rxdatas = 0;
+	err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
+	if (err)
+		return err;
+
+	wait_event_interruptible(zd->rxdataq, zd->rxdatas);
+	if (!zd->rxlen)
+		return -EIO;
+
+	code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
+	rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
+	length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
+	if (length > zd->rxlen)
+		length = zd->rxlen-6;
+
+	/* If access bit is not on, then error */
+	if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
+		return -EINVAL;
+
+	/* Not enough buffer for allocating data */
+	if (riddatalen != (length - 4)) {
+		dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
+		    riddatalen, zd->rxlen, length, rid, rid_fid);
+		return -ENODATA;
+	}
+
+	zd->rxdatas = 0;
+	/* Issue SetRxRid commnd */			
+	err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
+	if (err)
+		return err;
+
+	/* Receive RID record from resource packets */
+	wait_event_interruptible(zd->rxdataq, zd->rxdatas);
+	if (!zd->rxlen)
+		return -EIO;
+
+	if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
+		dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
+		    zd->rxdata[zd->rxlen-1]);
+		return -EINVAL;
+	}
+
+	/* Set the data pointer and received data length */
+	pdata = zd->rxdata;
+	length = zd->rxlen;
+
+	do {
+		int actual_length;
+
+		actual_length = (length > 64) ? 64 : length;
+
+		if (pdata[0] != 0x3) {
+			dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
+			    pdata[0]);
+			return -EINVAL;
+		}
+
+		if (actual_length != 64) {
+			/* Trim the last packet type byte */
+			actual_length--;
+		}
+
+		/* Skip the 4 bytes header (RID length and RID) */
+		if (i == 0) {
+			pdata += 8;
+			actual_length -= 8;
+		} else {
+			pdata += 4;
+			actual_length -= 4;
+		}
+		
+		memcpy(riddata, pdata, actual_length);
+		riddata += actual_length;
+		pdata += actual_length;
+		length -= 64;
+		i++;
+	} while (length > 0);
+
+	return 0;
+}
+
+/*
+ *	resreq:
+ *		byte	type
+ *		byte	sequence
+ *		u16	reserved
+ *		byte	data[12]
+ *	total: 16
+ */
+static int zd1201_setconfig(struct zd1201 *zd, int rid, void *buf, int len, int wait)
+{
+	int err;
+	unsigned char *request;
+	int reqlen;
+	char seq=0;
+	struct urb *urb;
+	gfp_t gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
+
+	len += 4;			/* first 4 are for header */
+
+	zd->rxdatas = 0;
+	zd->rxlen = 0;
+	for (seq=0; len > 0; seq++) {
+		request = kmalloc(16, gfp_mask);
+		if (!request)
+			return -ENOMEM;
+		urb = usb_alloc_urb(0, gfp_mask);
+		if (!urb) {
+			kfree(request);
+			return -ENOMEM;
+		}
+		memset(request, 0, 16);
+		reqlen = len>12 ? 12 : len;
+		request[0] = ZD1201_USB_RESREQ;
+		request[1] = seq;
+		request[2] = 0;
+		request[3] = 0;
+		if (request[1] == 0) {
+			/* add header */
+			*(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
+			*(__le16*)&request[6] = cpu_to_le16(rid);
+			memcpy(request+8, buf, reqlen-4);
+			buf += reqlen-4;
+		} else {
+			memcpy(request+4, buf, reqlen);
+			buf += reqlen;
+		}
+
+		len -= reqlen;
+
+		usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
+		    zd->endp_out2), request, 16, zd1201_usbfree, zd);
+		err = usb_submit_urb(urb, gfp_mask);
+		if (err)
+			goto err;
+	}
+
+	request = kmalloc(16, gfp_mask);
+	if (!request)
+		return -ENOMEM;
+	urb = usb_alloc_urb(0, gfp_mask);
+	if (!urb) {
+		kfree(request);
+		return -ENOMEM;
+	}
+	*((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
+	*((__le16*)&request[4]) = 
+	    cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
+	*((__le16*)&request[6]) = cpu_to_le16(rid);
+	*((__le16*)&request[8]) = cpu_to_le16(0);
+	*((__le16*)&request[10]) = cpu_to_le16(0);
+	usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
+	     request, 16, zd1201_usbfree, zd);
+	err = usb_submit_urb(urb, gfp_mask);
+	if (err)
+		goto err;
+	
+	if (wait) {
+		wait_event_interruptible(zd->rxdataq, zd->rxdatas);
+		if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
+			dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
+		}
+	}
+
+	return 0;
+err:
+	kfree(request);
+	usb_free_urb(urb);
+	return err;
+}
+
+static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
+{
+	int err;
+	__le16 zdval;
+
+	err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
+	if (err)
+		return err;
+	*val = le16_to_cpu(zdval);
+	return 0;
+}
+
+static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
+{
+	__le16 zdval = cpu_to_le16(val);
+	return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
+}
+
+static int zd1201_drvr_start(struct zd1201 *zd)
+{
+	int err, i;
+	short max;
+	__le16 zdmax;
+	unsigned char *buffer;
+
+	buffer = kzalloc(ZD1201_RXSIZE, GFP_KERNEL);
+	if (!buffer)
+		return -ENOMEM;
+
+	usb_fill_bulk_urb(zd->rx_urb, zd->usb, 
+	    usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
+	    zd1201_usbrx, zd);
+
+	err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
+	if (err)
+		goto err_buffer;
+
+	err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
+	if (err)
+		goto err_urb;
+
+	err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
+	    sizeof(__le16));
+	if (err)
+		goto err_urb;
+
+	max = le16_to_cpu(zdmax);
+	for (i=0; i<max; i++) {
+		err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
+		if (err)
+			goto err_urb;
+	}
+
+	return 0;
+
+err_urb:
+	usb_kill_urb(zd->rx_urb);
+	return err;
+err_buffer:
+	kfree(buffer);
+	return err;
+}
+
+/*	Magic alert: The firmware doesn't seem to like the MAC state being
+ *	toggled in promisc (aka monitor) mode.
+ *	(It works a number of times, but will halt eventually)
+ *	So we turn it of before disabling and on after enabling if needed.
+ */
+static int zd1201_enable(struct zd1201 *zd)
+{
+	int err;
+
+	if (zd->mac_enabled)
+		return 0;
+
+	err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
+	if (!err)
+		zd->mac_enabled = 1;
+
+	if (zd->monitor)
+		err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
+
+	return err;
+}
+
+static int zd1201_disable(struct zd1201 *zd)
+{
+	int err;
+
+	if (!zd->mac_enabled)
+		return 0;
+	if (zd->monitor) {
+		err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
+		if (err)
+			return err;
+	}
+
+	err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
+	if (!err)
+		zd->mac_enabled = 0;
+	return err;
+}
+
+static int zd1201_mac_reset(struct zd1201 *zd)
+{
+	if (!zd->mac_enabled)
+		return 0;
+	zd1201_disable(zd);
+	return zd1201_enable(zd);
+}
+
+static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
+{
+	int err, val;
+	char buf[IW_ESSID_MAX_SIZE+2];
+
+	err = zd1201_disable(zd);
+	if (err)
+		return err;
+
+	val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
+	val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
+	err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
+	if (err)
+		return err;
+
+	*(__le16 *)buf = cpu_to_le16(essidlen);
+	memcpy(buf+2, essid, essidlen);
+	if (!zd->ap) {	/* Normal station */
+		err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
+		    IW_ESSID_MAX_SIZE+2, 1);
+		if (err)
+			return err;
+	} else {	/* AP */
+		err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
+		    IW_ESSID_MAX_SIZE+2, 1);
+		if (err)
+			return err;
+	}
+
+	err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR, 
+	    zd->dev->dev_addr, zd->dev->addr_len, 1);
+	if (err)
+		return err;
+
+	err = zd1201_enable(zd);
+	if (err)
+		return err;
+
+	msleep(100);
+	return 0;
+}
+
+static int zd1201_net_open(struct net_device *dev)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+
+	/* Start MAC with wildcard if no essid set */
+	if (!zd->mac_enabled)
+		zd1201_join(zd, zd->essid, zd->essidlen);
+	netif_start_queue(dev);
+
+	return 0;
+}
+
+static int zd1201_net_stop(struct net_device *dev)
+{
+	netif_stop_queue(dev);
+	return 0;
+}
+
+/*
+	RFC 1042 encapsulates Ethernet frames in 802.11 frames
+	by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
+	(0x00, 0x00, 0x00). Zd requires an additional padding, copy
+	of ethernet addresses, length of the standard RFC 1042 packet
+	and a command byte (which is nul for tx).
+	
+	tx frame (from Wlan NG):
+	RFC 1042:
+		llc		0xAA 0xAA 0x03 (802.2 LLC)
+		snap		0x00 0x00 0x00 (Ethernet encapsulated)
+		type		2 bytes, Ethernet type field
+		payload		(minus eth header)
+	Zydas specific:
+		padding		1B if (skb->len+8+1)%64==0
+		Eth MAC addr	12 bytes, Ethernet MAC addresses
+		length		2 bytes, RFC 1042 packet length 
+				(llc+snap+type+payload)
+		zd		1 null byte, zd1201 packet type
+ */
+static int zd1201_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	unsigned char *txbuf = zd->txdata;
+	int txbuflen, pad = 0, err;
+	struct urb *urb = zd->tx_urb;
+
+	if (!zd->mac_enabled || zd->monitor) {
+		zd->stats.tx_dropped++;
+		kfree_skb(skb);
+		return 0;
+	}
+	netif_stop_queue(dev);
+
+	txbuflen = skb->len + 8 + 1;
+	if (txbuflen%64 == 0) {
+		pad = 1;
+		txbuflen++;
+	}
+	txbuf[0] = 0xAA;
+	txbuf[1] = 0xAA;
+	txbuf[2] = 0x03;
+	txbuf[3] = 0x00;	/* rfc1042 */
+	txbuf[4] = 0x00;
+	txbuf[5] = 0x00;
+
+	memcpy(txbuf+6, skb->data+12, skb->len-12);
+	if (pad)
+		txbuf[skb->len-12+6]=0;
+	memcpy(txbuf+skb->len-12+6+pad, skb->data, 12);
+	*(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
+	txbuf[txbuflen-1] = 0;
+
+	usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
+	    txbuf, txbuflen, zd1201_usbtx, zd);
+
+	err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
+	if (err) {
+		zd->stats.tx_errors++;
+		netif_start_queue(dev);
+		return err;
+	}
+	zd->stats.tx_packets++;
+	zd->stats.tx_bytes += skb->len;
+	dev->trans_start = jiffies;
+	kfree_skb(skb);
+
+	return 0;
+}
+
+static void zd1201_tx_timeout(struct net_device *dev)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+
+	if (!zd)
+		return;
+	dev_warn(&zd->usb->dev, "%s: TX timeout, shooting down urb\n",
+	    dev->name);
+	usb_unlink_urb(zd->tx_urb);
+	zd->stats.tx_errors++;
+	/* Restart the timeout to quiet the watchdog: */
+	dev->trans_start = jiffies;
+}
+
+static int zd1201_set_mac_address(struct net_device *dev, void *p)
+{
+	struct sockaddr *addr = p;
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	int err;
+
+	if (!zd)
+		return -ENODEV;
+
+	err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR, 
+	    addr->sa_data, dev->addr_len, 1);
+	if (err)
+		return err;
+	memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
+
+	return zd1201_mac_reset(zd);
+}
+
+static struct net_device_stats *zd1201_get_stats(struct net_device *dev)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+
+	return &zd->stats;
+}
+
+static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+
+	return &zd->iwstats;
+}
+
+static void zd1201_set_multicast(struct net_device *dev)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	struct dev_mc_list *mc = dev->mc_list;
+	unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
+	int i;
+
+	if (dev->mc_count > ZD1201_MAXMULTI)
+		return;
+
+	for (i=0; i<dev->mc_count; i++) {
+		memcpy(reqbuf+i*ETH_ALEN, mc->dmi_addr, ETH_ALEN);
+		mc = mc->next;
+	}
+	zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
+	    dev->mc_count*ETH_ALEN, 0);
+	
+}
+
+static int zd1201_config_commit(struct net_device *dev, 
+    struct iw_request_info *info, struct iw_point *data, char *essid)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+
+	return zd1201_mac_reset(zd);
+}
+
+static int zd1201_get_name(struct net_device *dev,
+    struct iw_request_info *info, char *name, char *extra)
+{
+	strcpy(name, "IEEE 802.11b");
+	return 0;
+}
+
+static int zd1201_set_freq(struct net_device *dev,
+    struct iw_request_info *info, struct iw_freq *freq, char *extra)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	short channel = 0;
+	int err;
+
+	if (freq->e == 0)
+		channel = freq->m;
+	else {
+		if (freq->m >= 2482)
+			channel = 14;
+		if (freq->m >= 2407)
+			channel = (freq->m-2407)/5;
+	}
+
+	err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
+	if (err)
+		return err;
+
+	zd1201_mac_reset(zd);
+
+	return 0;
+}
+
+static int zd1201_get_freq(struct net_device *dev,
+    struct iw_request_info *info, struct iw_freq *freq, char *extra)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	short channel;
+	int err;
+
+	err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
+	if (err)
+		return err;
+	freq->e = 0;
+	freq->m = channel;
+
+	return 0;
+}
+
+static int zd1201_set_mode(struct net_device *dev,
+    struct iw_request_info *info, __u32 *mode, char *extra)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	short porttype, monitor = 0;
+	unsigned char buffer[IW_ESSID_MAX_SIZE+2];
+	int err;
+
+	if (zd->ap) {
+		if (*mode != IW_MODE_MASTER)
+			return -EINVAL;
+		return 0;
+	}
+
+	err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
+	if (err)
+		return err;
+	zd->dev->type = ARPHRD_ETHER;
+	switch(*mode) {
+		case IW_MODE_MONITOR:
+			monitor = 1;
+			zd->dev->type = ARPHRD_IEEE80211;
+			/* Make sure we are no longer associated with by
+			   setting an 'impossible' essid.
+			   (otherwise we mess up firmware)
+			 */
+			zd1201_join(zd, "\0-*#\0", 5);
+			/* Put port in pIBSS */
+		case 8: /* No pseudo-IBSS in wireless extensions (yet) */
+			porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
+			break;
+		case IW_MODE_ADHOC:
+			porttype = ZD1201_PORTTYPE_IBSS;
+			break;
+		case IW_MODE_INFRA:
+			porttype = ZD1201_PORTTYPE_BSS;
+			break;
+		default:
+			return -EINVAL;
+	}
+
+	err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
+	if (err)
+		return err;
+	if (zd->monitor && !monitor) {
+			zd1201_disable(zd);
+			*(__le16 *)buffer = cpu_to_le16(zd->essidlen);
+			memcpy(buffer+2, zd->essid, zd->essidlen);
+			err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
+			    buffer, IW_ESSID_MAX_SIZE+2, 1);
+			if (err)
+				return err;
+	}
+	zd->monitor = monitor;
+	/* If monitor mode is set we don't actually turn it on here since it
+	 * is done during mac reset anyway (see zd1201_mac_enable).
+	 */
+	zd1201_mac_reset(zd);
+
+	return 0;
+}
+
+static int zd1201_get_mode(struct net_device *dev,
+    struct iw_request_info *info, __u32 *mode, char *extra)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	short porttype;
+	int err;
+
+	err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
+	if (err)
+		return err;
+	switch(porttype) {
+		case ZD1201_PORTTYPE_IBSS:
+			*mode = IW_MODE_ADHOC;
+			break;
+		case ZD1201_PORTTYPE_BSS:
+			*mode = IW_MODE_INFRA;
+			break;
+		case ZD1201_PORTTYPE_WDS:
+			*mode = IW_MODE_REPEAT;
+			break;
+		case ZD1201_PORTTYPE_PSEUDOIBSS:
+			*mode = 8;/* No Pseudo-IBSS... */
+			break;
+		case ZD1201_PORTTYPE_AP:
+			*mode = IW_MODE_MASTER;
+			break;
+		default:
+			dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
+			    porttype);
+			*mode = IW_MODE_AUTO;
+	}
+	if (zd->monitor)
+		*mode = IW_MODE_MONITOR;
+
+	return 0;
+}
+
+static int zd1201_get_range(struct net_device *dev,
+    struct iw_request_info *info, struct iw_point *wrq, char *extra)
+{
+	struct iw_range *range = (struct iw_range *)extra;
+
+	wrq->length = sizeof(struct iw_range);
+	memset(range, 0, sizeof(struct iw_range));
+	range->we_version_compiled = WIRELESS_EXT;
+	range->we_version_source = WIRELESS_EXT;
+
+	range->max_qual.qual = 128;
+	range->max_qual.level = 128;
+	range->max_qual.noise = 128;
+	range->max_qual.updated = 7;
+
+	range->encoding_size[0] = 5;
+	range->encoding_size[1] = 13;
+	range->num_encoding_sizes = 2;
+	range->max_encoding_tokens = ZD1201_NUMKEYS;
+
+	range->num_bitrates = 4;
+	range->bitrate[0] = 1000000;
+	range->bitrate[1] = 2000000;
+	range->bitrate[2] = 5500000;
+	range->bitrate[3] = 11000000;
+
+	range->min_rts = 0;
+	range->min_frag = ZD1201_FRAGMIN;
+	range->max_rts = ZD1201_RTSMAX;
+	range->min_frag = ZD1201_FRAGMAX;
+
+	return 0;
+}
+
+/*	Little bit of magic here: we only get the quality if we poll
+ *	for it, and we never get an actual request to trigger such
+ *	a poll. Therefore we 'assume' that the user will soon ask for
+ *	the stats after asking the bssid.
+ */
+static int zd1201_get_wap(struct net_device *dev,
+    struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	unsigned char buffer[6];
+
+	if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
+		/* Unfortunately the quality and noise reported is useless.
+		   they seem to be accumulators that increase until you
+		   read them, unless we poll on a fixed interval we can't
+		   use them
+		 */
+		/*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
+		zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
+		/*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
+		zd->iwstats.qual.updated = 2;
+	}
+
+	return zd1201_getconfig(zd, ZD1201_RID_CURRENTBSSID, ap_addr->sa_data, 6);
+}
+
+static int zd1201_set_scan(struct net_device *dev,
+    struct iw_request_info *info, struct iw_point *srq, char *extra)
+{
+	/* We do everything in get_scan */
+	return 0;
+}
+
+static int zd1201_get_scan(struct net_device *dev,
+    struct iw_request_info *info, struct iw_point *srq, char *extra)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	int err, i, j, enabled_save;
+	struct iw_event iwe;
+	char *cev = extra;
+	char *end_buf = extra + IW_SCAN_MAX_DATA;
+
+	/* No scanning in AP mode */
+	if (zd->ap)
+		return -EOPNOTSUPP;
+
+	/* Scan doesn't seem to work if disabled */
+	enabled_save = zd->mac_enabled;
+	zd1201_enable(zd);
+
+	zd->rxdatas = 0;
+	err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE, 
+	     ZD1201_INQ_SCANRESULTS, 0, 0);
+	if (err)
+		return err;
+
+	wait_event_interruptible(zd->rxdataq, zd->rxdatas);
+	if (!zd->rxlen)
+		return -EIO;
+
+	if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
+		return -EIO;
+
+	for(i=8; i<zd->rxlen; i+=62) {
+		iwe.cmd = SIOCGIWAP;
+		iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
+		memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
+		cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_ADDR_LEN);
+
+		iwe.cmd = SIOCGIWESSID;
+		iwe.u.data.length = zd->rxdata[i+16];
+		iwe.u.data.flags = 1;
+		cev = iwe_stream_add_point(cev, end_buf, &iwe, zd->rxdata+i+18);
+
+		iwe.cmd = SIOCGIWMODE;
+		if (zd->rxdata[i+14]&0x01)
+			iwe.u.mode = IW_MODE_MASTER;
+		else
+			iwe.u.mode = IW_MODE_ADHOC;
+		cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_UINT_LEN);
+		
+		iwe.cmd = SIOCGIWFREQ;
+		iwe.u.freq.m = zd->rxdata[i+0];
+		iwe.u.freq.e = 0;
+		cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_FREQ_LEN);
+		
+		iwe.cmd = SIOCGIWRATE;
+		iwe.u.bitrate.fixed = 0;
+		iwe.u.bitrate.disabled = 0;
+		for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
+			iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
+			cev=iwe_stream_add_event(cev, end_buf, &iwe,
+			    IW_EV_PARAM_LEN);
+		}
+		
+		iwe.cmd = SIOCGIWENCODE;
+		iwe.u.data.length = 0;
+		if (zd->rxdata[i+14]&0x10)
+			iwe.u.data.flags = IW_ENCODE_ENABLED;
+		else
+			iwe.u.data.flags = IW_ENCODE_DISABLED;
+		cev = iwe_stream_add_point(cev, end_buf, &iwe, NULL);
+		
+		iwe.cmd = IWEVQUAL;
+		iwe.u.qual.qual = zd->rxdata[i+4];
+		iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
+		iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
+		iwe.u.qual.updated = 7;
+		cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_QUAL_LEN);
+	}
+
+	if (!enabled_save)
+		zd1201_disable(zd);
+
+	srq->length = cev - extra;
+	srq->flags = 0;
+
+	return 0;
+}
+
+static int zd1201_set_essid(struct net_device *dev,
+    struct iw_request_info *info, struct iw_point *data, char *essid)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+
+	if (data->length > IW_ESSID_MAX_SIZE)
+		return -EINVAL;
+	if (data->length < 1)
+		data->length = 1;
+	zd->essidlen = data->length-1;
+	memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
+	memcpy(zd->essid, essid, data->length);
+	return zd1201_join(zd, zd->essid, zd->essidlen);
+}
+
+static int zd1201_get_essid(struct net_device *dev,
+    struct iw_request_info *info, struct iw_point *data, char *essid)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+
+	memcpy(essid, zd->essid, zd->essidlen);
+	data->flags = 1;
+	data->length = zd->essidlen;
+
+	return 0;
+}
+
+static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
+    struct iw_point *data, char *nick)
+{
+	strcpy(nick, "zd1201");
+	data->flags = 1;
+	data->length = strlen(nick);
+	return 0;
+}
+
+static int zd1201_set_rate(struct net_device *dev,
+    struct iw_request_info *info, struct iw_param *rrq, char *extra)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	short rate;
+	int err;
+
+	switch (rrq->value) {
+		case 1000000:
+			rate = ZD1201_RATEB1;
+			break;
+		case 2000000:
+			rate = ZD1201_RATEB2;
+			break;
+		case 5500000:
+			rate = ZD1201_RATEB5;
+			break;
+		case 11000000:
+		default:
+			rate = ZD1201_RATEB11;
+			break;
+	}
+	if (!rrq->fixed) { /* Also enable all lower bitrates */
+		rate |= rate-1;
+	}
+
+	err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
+	if (err)
+		return err;
+
+	return zd1201_mac_reset(zd);
+}
+
+static int zd1201_get_rate(struct net_device *dev,
+    struct iw_request_info *info, struct iw_param *rrq, char *extra)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	short rate;
+	int err;
+
+	err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
+	if (err)
+		return err;
+
+	switch(rate) {
+		case 1:
+			rrq->value = 1000000;
+			break;
+		case 2:
+			rrq->value = 2000000;
+			break;
+		case 5:
+			rrq->value = 5500000;
+			break;
+		case 11:
+			rrq->value = 11000000;
+			break;
+		default:
+			rrq->value = 0;
+	}
+	rrq->fixed = 0;
+	rrq->disabled = 0;
+
+	return 0;
+}
+
+static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
+    struct iw_param *rts, char *extra)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	int err;
+	short val = rts->value;
+
+	if (rts->disabled || !rts->fixed)
+		val = ZD1201_RTSMAX;
+	if (val > ZD1201_RTSMAX)
+		return -EINVAL;
+	if (val < 0)
+		return -EINVAL;
+
+	err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
+	if (err)
+		return err;
+	return zd1201_mac_reset(zd);
+}
+
+static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
+    struct iw_param *rts, char *extra)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	short rtst;
+	int err;
+
+	err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
+	if (err)
+		return err;
+	rts->value = rtst;
+	rts->disabled = (rts->value == ZD1201_RTSMAX);
+	rts->fixed = 1;
+
+	return 0;
+}
+
+static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
+    struct iw_param *frag, char *extra)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	int err;
+	short val = frag->value;
+
+	if (frag->disabled || !frag->fixed)
+		val = ZD1201_FRAGMAX;
+	if (val > ZD1201_FRAGMAX)
+		return -EINVAL;
+	if (val < ZD1201_FRAGMIN)
+		return -EINVAL;
+	if (val & 1)
+		return -EINVAL;
+	err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
+	if (err)
+		return err;
+	return zd1201_mac_reset(zd);
+}
+
+static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
+    struct iw_param *frag, char *extra)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	short fragt;
+	int err;
+
+	err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
+	if (err)
+		return err;
+	frag->value = fragt;
+	frag->disabled = (frag->value == ZD1201_FRAGMAX);
+	frag->fixed = 1;
+
+	return 0;
+}
+
+static int zd1201_set_retry(struct net_device *dev,
+    struct iw_request_info *info, struct iw_param *rrq, char *extra)
+{
+	return 0;
+}
+
+static int zd1201_get_retry(struct net_device *dev,
+    struct iw_request_info *info, struct iw_param *rrq, char *extra)
+{
+	return 0;
+}
+
+static int zd1201_set_encode(struct net_device *dev,
+    struct iw_request_info *info, struct iw_point *erq, char *key)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	short i;
+	int err, rid;
+
+	if (erq->length > ZD1201_MAXKEYLEN)
+		return -EINVAL;
+
+	i = (erq->flags & IW_ENCODE_INDEX)-1;
+	if (i == -1) {
+		err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
+		if (err)
+			return err;
+	} else {
+		err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
+		if (err)
+			return err;
+	}
+
+	if (i < 0 || i >= ZD1201_NUMKEYS)
+		return -EINVAL;
+
+	rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
+	err = zd1201_setconfig(zd, rid, key, erq->length, 1);
+	if (err)
+		return err;
+	zd->encode_keylen[i] = erq->length;
+	memcpy(zd->encode_keys[i], key, erq->length);
+
+	i=0;
+	if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
+		i |= 0x01;
+		zd->encode_enabled = 1;
+	} else
+		zd->encode_enabled = 0;
+	if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
+		i |= 0x02;
+		zd->encode_restricted = 1;
+	} else
+		zd->encode_restricted = 0;
+	err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
+	if (err)
+		return err;
+
+	if (zd->encode_enabled)
+		i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
+	else
+		i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
+	err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
+	if (err)
+		return err;
+
+	return zd1201_mac_reset(zd);
+}
+
+static int zd1201_get_encode(struct net_device *dev,
+    struct iw_request_info *info, struct iw_point *erq, char *key)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	short i;
+	int err;
+
+	if (zd->encode_enabled)
+		erq->flags = IW_ENCODE_ENABLED;
+	else
+		erq->flags = IW_ENCODE_DISABLED;
+	if (zd->encode_restricted)
+		erq->flags |= IW_ENCODE_RESTRICTED;
+	else
+		erq->flags |= IW_ENCODE_OPEN;
+
+	i = (erq->flags & IW_ENCODE_INDEX) -1;
+	if (i == -1) {
+		err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
+		if (err)
+			return err;
+	}
+	if (i<0 || i>= ZD1201_NUMKEYS)
+		return -EINVAL;
+
+	erq->flags |= i+1;
+
+	erq->length = zd->encode_keylen[i];
+	memcpy(key, zd->encode_keys[i], erq->length);
+
+	return 0;
+}
+
+static int zd1201_set_power(struct net_device *dev, 
+    struct iw_request_info *info, struct iw_param *vwrq, char *extra)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	short enabled, duration, level;
+	int err;
+
+	enabled = vwrq->disabled ? 0 : 1;
+	if (enabled) {
+		if (vwrq->flags & IW_POWER_PERIOD) {
+			duration = vwrq->value;
+			err = zd1201_setconfig16(zd, 
+			    ZD1201_RID_CNFMAXSLEEPDURATION, duration);
+			if (err)
+				return err;
+			goto out;
+		}
+		if (vwrq->flags & IW_POWER_TIMEOUT) {
+			err = zd1201_getconfig16(zd, 
+			    ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
+			if (err)
+				return err;
+			level = vwrq->value * 4 / duration;
+			if (level > 4)
+				level = 4;
+			if (level < 0)
+				level = 0;
+			err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
+			    level);
+			if (err)
+				return err;
+			goto out;
+		}
+		return -EINVAL;
+	}
+out:
+	return zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
+}
+
+static int zd1201_get_power(struct net_device *dev,
+    struct iw_request_info *info, struct iw_param *vwrq, char *extra)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	short enabled, level, duration;
+	int err;
+
+	err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
+	if (err)
+		return err;
+	err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
+	if (err)
+		return err;
+	err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
+	if (err)
+		return err;
+	vwrq->disabled = enabled ? 0 : 1;
+	if (vwrq->flags & IW_POWER_TYPE) {
+		if (vwrq->flags & IW_POWER_PERIOD) {
+			vwrq->value = duration;
+			vwrq->flags = IW_POWER_PERIOD;
+		} else {
+			vwrq->value = duration * level / 4;
+			vwrq->flags = IW_POWER_TIMEOUT;
+		}
+	}
+	if (vwrq->flags & IW_POWER_MODE) {
+		if (enabled && level)
+			vwrq->flags = IW_POWER_UNICAST_R;
+		else
+			vwrq->flags = IW_POWER_ALL_R;
+	}
+
+	return 0;
+}
+
+
+static const iw_handler zd1201_iw_handler[] =
+{
+	(iw_handler) zd1201_config_commit,	/* SIOCSIWCOMMIT */
+	(iw_handler) zd1201_get_name,    	/* SIOCGIWNAME */
+	(iw_handler) NULL,			/* SIOCSIWNWID */
+	(iw_handler) NULL,			/* SIOCGIWNWID */
+	(iw_handler) zd1201_set_freq,		/* SIOCSIWFREQ */
+	(iw_handler) zd1201_get_freq,		/* SIOCGIWFREQ */
+	(iw_handler) zd1201_set_mode,		/* SIOCSIWMODE */
+	(iw_handler) zd1201_get_mode,		/* SIOCGIWMODE */
+	(iw_handler) NULL,                  	/* SIOCSIWSENS */
+	(iw_handler) NULL,           		/* SIOCGIWSENS */
+	(iw_handler) NULL,			/* SIOCSIWRANGE */
+	(iw_handler) zd1201_get_range,           /* SIOCGIWRANGE */
+	(iw_handler) NULL,			/* SIOCSIWPRIV */
+	(iw_handler) NULL,			/* SIOCGIWPRIV */
+	(iw_handler) NULL,			/* SIOCSIWSTATS */
+	(iw_handler) NULL,			/* SIOCGIWSTATS */
+	(iw_handler) NULL,			/* SIOCSIWSPY */
+	(iw_handler) NULL,			/* SIOCGIWSPY */
+	(iw_handler) NULL,			/* -- hole -- */
+	(iw_handler) NULL,			/* -- hole -- */
+	(iw_handler) NULL/*zd1201_set_wap*/,		/* SIOCSIWAP */
+	(iw_handler) zd1201_get_wap,		/* SIOCGIWAP */
+	(iw_handler) NULL,			/* -- hole -- */
+	(iw_handler) NULL,       		/* SIOCGIWAPLIST */
+	(iw_handler) zd1201_set_scan,		/* SIOCSIWSCAN */
+	(iw_handler) zd1201_get_scan,		/* SIOCGIWSCAN */
+	(iw_handler) zd1201_set_essid,		/* SIOCSIWESSID */
+	(iw_handler) zd1201_get_essid,		/* SIOCGIWESSID */
+	(iw_handler) NULL,         		/* SIOCSIWNICKN */
+	(iw_handler) zd1201_get_nick, 		/* SIOCGIWNICKN */
+	(iw_handler) NULL,			/* -- hole -- */
+	(iw_handler) NULL,			/* -- hole -- */
+	(iw_handler) zd1201_set_rate,		/* SIOCSIWRATE */
+	(iw_handler) zd1201_get_rate,		/* SIOCGIWRATE */
+	(iw_handler) zd1201_set_rts,		/* SIOCSIWRTS */
+	(iw_handler) zd1201_get_rts,		/* SIOCGIWRTS */
+	(iw_handler) zd1201_set_frag,		/* SIOCSIWFRAG */
+	(iw_handler) zd1201_get_frag,		/* SIOCGIWFRAG */
+	(iw_handler) NULL,         		/* SIOCSIWTXPOW */
+	(iw_handler) NULL,          		/* SIOCGIWTXPOW */
+	(iw_handler) zd1201_set_retry,		/* SIOCSIWRETRY */
+	(iw_handler) zd1201_get_retry,		/* SIOCGIWRETRY */
+	(iw_handler) zd1201_set_encode,		/* SIOCSIWENCODE */
+	(iw_handler) zd1201_get_encode,		/* SIOCGIWENCODE */
+	(iw_handler) zd1201_set_power,		/* SIOCSIWPOWER */
+	(iw_handler) zd1201_get_power,		/* SIOCGIWPOWER */
+};
+
+static int zd1201_set_hostauth(struct net_device *dev,
+    struct iw_request_info *info, struct iw_param *rrq, char *extra)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+
+	if (!zd->ap)
+		return -EOPNOTSUPP;
+
+	return zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
+}
+
+static int zd1201_get_hostauth(struct net_device *dev,
+    struct iw_request_info *info, struct iw_param *rrq, char *extra)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	short hostauth;
+	int err;
+
+	if (!zd->ap)
+		return -EOPNOTSUPP;
+
+	err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
+	if (err)
+		return err;
+	rrq->value = hostauth;
+	rrq->fixed = 1;
+
+	return 0;
+}
+
+static int zd1201_auth_sta(struct net_device *dev,
+    struct iw_request_info *info, struct sockaddr *sta, char *extra)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	unsigned char buffer[10];
+
+	if (!zd->ap)
+		return -EOPNOTSUPP;
+
+	memcpy(buffer, sta->sa_data, ETH_ALEN);
+	*(short*)(buffer+6) = 0;	/* 0==success, 1==failure */
+	*(short*)(buffer+8) = 0;
+
+	return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
+}
+
+static int zd1201_set_maxassoc(struct net_device *dev,
+    struct iw_request_info *info, struct iw_param *rrq, char *extra)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	int err;
+
+	if (!zd->ap)
+		return -EOPNOTSUPP;
+
+	err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
+	if (err)
+		return err;
+	return 0;
+}
+
+static int zd1201_get_maxassoc(struct net_device *dev,
+    struct iw_request_info *info, struct iw_param *rrq, char *extra)
+{
+	struct zd1201 *zd = (struct zd1201 *)dev->priv;
+	short maxassoc;
+	int err;
+
+	if (!zd->ap)
+		return -EOPNOTSUPP;
+
+	err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
+	if (err)
+		return err;
+	rrq->value = maxassoc;
+	rrq->fixed = 1;
+
+	return 0;
+}
+
+static const iw_handler zd1201_private_handler[] = {
+	(iw_handler) zd1201_set_hostauth,	/* ZD1201SIWHOSTAUTH */
+	(iw_handler) zd1201_get_hostauth,	/* ZD1201GIWHOSTAUTH */
+	(iw_handler) zd1201_auth_sta,		/* ZD1201SIWAUTHSTA */
+	(iw_handler) NULL,			/* nothing to get */
+	(iw_handler) zd1201_set_maxassoc,	/* ZD1201SIMAXASSOC */
+	(iw_handler) zd1201_get_maxassoc,	/* ZD1201GIMAXASSOC */
+};
+
+static const struct iw_priv_args zd1201_private_args[] = {
+	{ ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
+	    IW_PRIV_TYPE_NONE, "sethostauth" },
+	{ ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
+	    IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
+	{ ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
+	    IW_PRIV_TYPE_NONE, "authstation" },
+	{ ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
+	    IW_PRIV_TYPE_NONE, "setmaxassoc" },
+	{ ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
+	    IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
+};
+
+static const struct iw_handler_def zd1201_iw_handlers = {
+	.num_standard 		= ARRAY_SIZE(zd1201_iw_handler),
+	.num_private 		= ARRAY_SIZE(zd1201_private_handler),
+	.num_private_args 	= ARRAY_SIZE(zd1201_private_args),
+	.standard 		= (iw_handler *)zd1201_iw_handler,
+	.private 		= (iw_handler *)zd1201_private_handler,
+	.private_args 		= (struct iw_priv_args *) zd1201_private_args,
+	.get_wireless_stats	= zd1201_get_wireless_stats,
+};
+
+static int zd1201_probe(struct usb_interface *interface,
+			const struct usb_device_id *id)
+{
+	struct zd1201 *zd;
+	struct usb_device *usb;
+	int err;
+	short porttype;
+	char buf[IW_ESSID_MAX_SIZE+2];
+
+	usb = interface_to_usbdev(interface);
+
+	zd = kzalloc(sizeof(struct zd1201), GFP_KERNEL);
+	if (!zd)
+		return -ENOMEM;
+	zd->ap = ap;
+	zd->usb = usb;
+	zd->removed = 0;
+	init_waitqueue_head(&zd->rxdataq);
+	INIT_HLIST_HEAD(&zd->fraglist);
+	
+	err = zd1201_fw_upload(usb, zd->ap);
+	if (err) {
+		dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
+		goto err_zd;
+	}
+	
+	zd->endp_in = 1;
+	zd->endp_out = 1;
+	zd->endp_out2 = 2;
+	zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
+	zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
+	if (!zd->rx_urb || !zd->tx_urb)
+		goto err_zd;
+
+	mdelay(100);
+	err = zd1201_drvr_start(zd);
+	if (err)
+		goto err_zd;
+
+	err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
+	if (err)
+		goto err_start;
+
+	err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
+	    ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
+	if (err)
+		goto err_start;
+
+	zd->dev = alloc_etherdev(0);
+	if (!zd->dev)
+		goto err_start;
+
+	zd->dev->priv = zd;
+	zd->dev->open = zd1201_net_open;
+	zd->dev->stop = zd1201_net_stop;
+	zd->dev->get_stats = zd1201_get_stats;
+	zd->dev->wireless_handlers =
+	    (struct iw_handler_def *)&zd1201_iw_handlers;
+	zd->dev->hard_start_xmit = zd1201_hard_start_xmit;
+	zd->dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
+	zd->dev->tx_timeout = zd1201_tx_timeout;
+	zd->dev->set_multicast_list = zd1201_set_multicast;
+	zd->dev->set_mac_address = zd1201_set_mac_address;
+	strcpy(zd->dev->name, "wlan%d");
+
+	err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR, 
+	    zd->dev->dev_addr, zd->dev->addr_len);
+	if (err)
+		goto err_net;
+
+	/* Set wildcard essid to match zd->essid */
+	*(__le16 *)buf = cpu_to_le16(0);
+	err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
+	    IW_ESSID_MAX_SIZE+2, 1);
+	if (err)
+		goto err_net;
+
+	if (zd->ap)
+		porttype = ZD1201_PORTTYPE_AP;
+	else
+		porttype = ZD1201_PORTTYPE_BSS;
+	err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
+	if (err)
+		goto err_net;
+
+	SET_NETDEV_DEV(zd->dev, &usb->dev);
+
+	err = register_netdev(zd->dev);
+	if (err)
+		goto err_net;
+	dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
+	    zd->dev->name);
+
+	usb_set_intfdata(interface, zd);
+	return 0;
+
+err_net:
+	free_netdev(zd->dev);
+err_start:
+	/* Leave the device in reset state */
+	zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
+err_zd:
+	if (zd->tx_urb)
+		usb_free_urb(zd->tx_urb);
+	if (zd->rx_urb)
+		usb_free_urb(zd->rx_urb);
+	kfree(zd);
+	return err;
+}
+
+static void zd1201_disconnect(struct usb_interface *interface)
+{
+	struct zd1201 *zd=(struct zd1201 *)usb_get_intfdata(interface);
+	struct hlist_node *node, *node2;
+	struct zd1201_frag *frag;
+
+	if (!zd)
+		return;
+	usb_set_intfdata(interface, NULL);
+	if (zd->dev) {
+		unregister_netdev(zd->dev);
+		free_netdev(zd->dev);
+	}
+
+	hlist_for_each_entry_safe(frag, node, node2, &zd->fraglist, fnode) {
+		hlist_del_init(&frag->fnode);
+		kfree_skb(frag->skb);
+		kfree(frag);
+	}
+
+	if (zd->tx_urb) {
+		usb_kill_urb(zd->tx_urb);
+		usb_free_urb(zd->tx_urb);
+	}
+	if (zd->rx_urb) {
+		usb_kill_urb(zd->rx_urb);
+		usb_free_urb(zd->rx_urb);
+	}
+	kfree(zd);
+}
+
+#ifdef CONFIG_PM
+
+static int zd1201_suspend(struct usb_interface *interface,
+			   pm_message_t message)
+{
+	struct zd1201 *zd = usb_get_intfdata(interface);
+
+	netif_device_detach(zd->dev);
+
+	zd->was_enabled = zd->mac_enabled;
+
+	if (zd->was_enabled)
+		return zd1201_disable(zd);
+	else
+		return 0;
+}
+
+static int zd1201_resume(struct usb_interface *interface)
+{
+	struct zd1201 *zd = usb_get_intfdata(interface);
+
+	if (!zd || !zd->dev)
+		return -ENODEV;
+
+	netif_device_attach(zd->dev);
+
+	if (zd->was_enabled)
+		return zd1201_enable(zd);
+	else
+		return 0;
+}
+
+#else
+
+#define zd1201_suspend NULL
+#define zd1201_resume  NULL
+
+#endif
+
+static struct usb_driver zd1201_usb = {
+	.name = "zd1201",
+	.probe = zd1201_probe,
+	.disconnect = zd1201_disconnect,
+	.id_table = zd1201_table,
+	.suspend = zd1201_suspend,
+	.resume = zd1201_resume,
+};
+
+static int __init zd1201_init(void)
+{
+	return usb_register(&zd1201_usb);
+}
+
+static void __exit zd1201_cleanup(void)
+{
+	usb_deregister(&zd1201_usb);
+}
+
+module_init(zd1201_init);
+module_exit(zd1201_cleanup);