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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [net/] [wireless/] [zd1201.c] - Blame information for rev 62

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/*
 *      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 zd1201 *zd = urb->context;
 
        switch(urb->status) {
                case -EILSEQ:
                case -ENODEV:
                case -ETIME:
                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 zd1201 *zd = urb->context;
        netif_wake_queue(zd->dev);
        return;
}
 
/* Incoming data */
static void zd1201_usbrx(struct urb *urb)
{
        struct zd1201 *zd = urb->context;
        int free = 0;
        unsigned char *data = urb->transfer_buffer;
        struct sk_buff *skb;
        unsigned char type;
 
        if (!zd)
                return;
 
        switch(urb->status) {
                case -EILSEQ:
                case -ENODEV:
                case -ETIME:
                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->protocol = eth_type_trans(skb, zd->dev);
                        skb->dev->last_rx = jiffies;
                        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->protocol = eth_type_trans(skb, zd->dev);
                skb->dev->last_rx = jiffies;
                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;
 
        skb_copy_from_linear_data_offset(skb, 12, txbuf + 6, skb->len - 12);
        if (pad)
                txbuf[skb->len-12+6]=0;
        skb_copy_from_linear_data(skb, txbuf + skb->len - 12 + 6 + pad, 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;
        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);
        zd1201_enable(zd);      /* zd1201 likes to startup enabled, */
        zd1201_disable(zd);     /* interfering with all the wifis in range */
        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:
        usb_free_urb(zd->tx_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);
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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [net/] [wireless/] [zd1201.c] - Blame information for rev 62

Line No.	Rev	Author	Line
1	62	marcus.erl	`/*`
2			`* Driver for ZyDAS zd1201 based wireless USB devices.`
3			`*`
4			`* Copyright (c) 2004, 2005 Jeroen Vreeken (pe1rxq@amsat.org)`
5			`*`
6			`* This program is free software; you can redistribute it and/or`
7			`* modify it under the terms of the GNU General Public License`
8			`* version 2 as published by the Free Software Foundation.`
9			`*`
10			`* Parts of this driver have been derived from a wlan-ng version`
11			`* modified by ZyDAS. They also made documentation available, thanks!`
12			`* Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.`
13			`*/`
14
15			`#include <linux/module.h>`
16			`#include <linux/usb.h>`
17			`#include <linux/netdevice.h>`
18			`#include <linux/etherdevice.h>`
19			`#include <linux/wireless.h>`
20			`#include <net/iw_handler.h>`
21			`#include <linux/string.h>`
22			`#include <linux/if_arp.h>`
23			`#include <linux/firmware.h>`
24			`#include <net/ieee80211.h>`
25			`#include "zd1201.h"`
26
27			`static struct usb_device_id zd1201_table[] = {`
28			`{USB_DEVICE(0x0586, 0x3400)}, /* Peabird Wireless USB Adapter */`
29			`{USB_DEVICE(0x0ace, 0x1201)}, /* ZyDAS ZD1201 Wireless USB Adapter */`
30			`{USB_DEVICE(0x050d, 0x6051)}, /* Belkin F5D6051 usb adapter */`
31			`{USB_DEVICE(0x0db0, 0x6823)}, /* MSI UB11B usb adapter */`
32			`{USB_DEVICE(0x1044, 0x8005)}, /* GIGABYTE GN-WLBZ201 usb adapter */`
33			`{}`
34			`};`
35
36			`static int ap; /* Are we an AP or a normal station? */`
37
38			`#define ZD1201_VERSION "0.15"`
39
40			`MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>");`