linux/drivers/net/wireless/zd1201.c
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   1/*
   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/slab.h>
  18#include <linux/netdevice.h>
  19#include <linux/etherdevice.h>
  20#include <linux/wireless.h>
  21#include <net/cfg80211.h>
  22#include <net/iw_handler.h>
  23#include <linux/string.h>
  24#include <linux/if_arp.h>
  25#include <linux/firmware.h>
  26#include "zd1201.h"
  27
  28static struct usb_device_id zd1201_table[] = {
  29        {USB_DEVICE(0x0586, 0x3400)}, /* Peabird Wireless USB Adapter */
  30        {USB_DEVICE(0x0ace, 0x1201)}, /* ZyDAS ZD1201 Wireless USB Adapter */
  31        {USB_DEVICE(0x050d, 0x6051)}, /* Belkin F5D6051 usb  adapter */
  32        {USB_DEVICE(0x0db0, 0x6823)}, /* MSI UB11B usb  adapter */
  33        {USB_DEVICE(0x1044, 0x8004)}, /* Gigabyte GN-WLBZ101 */
  34        {USB_DEVICE(0x1044, 0x8005)}, /* GIGABYTE GN-WLBZ201 usb adapter */
  35        {}
  36};
  37
  38static int ap;  /* Are we an AP or a normal station? */
  39
  40#define ZD1201_VERSION  "0.15"
  41
  42MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>");
  43MODULE_DESCRIPTION("Driver for ZyDAS ZD1201 based USB Wireless adapters");
  44MODULE_VERSION(ZD1201_VERSION);
  45MODULE_LICENSE("GPL");
  46module_param(ap, int, 0);
  47MODULE_PARM_DESC(ap, "If non-zero Access Point firmware will be loaded");
  48MODULE_DEVICE_TABLE(usb, zd1201_table);
  49
  50
  51static int zd1201_fw_upload(struct usb_device *dev, int apfw)
  52{
  53        const struct firmware *fw_entry;
  54        const char *data;
  55        unsigned long len;
  56        int err;
  57        unsigned char ret;
  58        char *buf;
  59        char *fwfile;
  60
  61        if (apfw)
  62                fwfile = "zd1201-ap.fw";
  63        else
  64                fwfile = "zd1201.fw";
  65
  66        err = request_firmware(&fw_entry, fwfile, &dev->dev);
  67        if (err) {
  68                dev_err(&dev->dev, "Failed to load %s firmware file!\n", fwfile);
  69                dev_err(&dev->dev, "Make sure the hotplug firmware loader is installed.\n");
  70                dev_err(&dev->dev, "Goto http://linux-lc100020.sourceforge.net for more info.\n");
  71                return err;
  72        }
  73
  74        data = fw_entry->data;
  75        len = fw_entry->size;
  76
  77        buf = kmalloc(1024, GFP_ATOMIC);
  78        if (!buf) {
  79                err = -ENOMEM;
  80                goto exit;
  81        }
  82        
  83        while (len > 0) {
  84                int translen = (len > 1024) ? 1024 : len;
  85                memcpy(buf, data, translen);
  86
  87                err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0,
  88                    USB_DIR_OUT | 0x40, 0, 0, buf, translen,
  89                    ZD1201_FW_TIMEOUT);
  90                if (err < 0)
  91                        goto exit;
  92
  93                len -= translen;
  94                data += translen;
  95        }
  96                                        
  97        err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0x2,
  98            USB_DIR_OUT | 0x40, 0, 0, NULL, 0, ZD1201_FW_TIMEOUT);
  99        if (err < 0)
 100                goto exit;
 101
 102        err = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 0x4,
 103            USB_DIR_IN | 0x40, 0, 0, buf, sizeof(ret), ZD1201_FW_TIMEOUT);
 104        if (err < 0)
 105                goto exit;
 106
 107        memcpy(&ret, buf, sizeof(ret));
 108
 109        if (ret & 0x80) {
 110                err = -EIO;
 111                goto exit;
 112        }
 113
 114        err = 0;
 115exit:
 116        kfree(buf);
 117        release_firmware(fw_entry);
 118        return err;
 119}
 120
 121MODULE_FIRMWARE("zd1201-ap.fw");
 122MODULE_FIRMWARE("zd1201.fw");
 123
 124static void zd1201_usbfree(struct urb *urb)
 125{
 126        struct zd1201 *zd = urb->context;
 127
 128        switch(urb->status) {
 129                case -EILSEQ:
 130                case -ENODEV:
 131                case -ETIME:
 132                case -ENOENT:
 133                case -EPIPE:
 134                case -EOVERFLOW:
 135                case -ESHUTDOWN:
 136                        dev_warn(&zd->usb->dev, "%s: urb failed: %d\n", 
 137                            zd->dev->name, urb->status);
 138        }
 139
 140        kfree(urb->transfer_buffer);
 141        usb_free_urb(urb);
 142}
 143
 144/* cmdreq message: 
 145        u32 type
 146        u16 cmd
 147        u16 parm0
 148        u16 parm1
 149        u16 parm2
 150        u8  pad[4]
 151
 152        total: 4 + 2 + 2 + 2 + 2 + 4 = 16
 153*/
 154static int zd1201_docmd(struct zd1201 *zd, int cmd, int parm0,
 155                        int parm1, int parm2)
 156{
 157        unsigned char *command;
 158        int ret;
 159        struct urb *urb;
 160
 161        command = kmalloc(16, GFP_ATOMIC);
 162        if (!command)
 163                return -ENOMEM;
 164
 165        *((__le32*)command) = cpu_to_le32(ZD1201_USB_CMDREQ);
 166        *((__le16*)&command[4]) = cpu_to_le16(cmd);
 167        *((__le16*)&command[6]) = cpu_to_le16(parm0);
 168        *((__le16*)&command[8]) = cpu_to_le16(parm1);
 169        *((__le16*)&command[10])= cpu_to_le16(parm2);
 170
 171        urb = usb_alloc_urb(0, GFP_ATOMIC);
 172        if (!urb) {
 173                kfree(command);
 174                return -ENOMEM;
 175        }
 176        usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 177                          command, 16, zd1201_usbfree, zd);
 178        ret = usb_submit_urb(urb, GFP_ATOMIC);
 179        if (ret) {
 180                kfree(command);
 181                usb_free_urb(urb);
 182        }
 183
 184        return ret;
 185}
 186
 187/* Callback after sending out a packet */
 188static void zd1201_usbtx(struct urb *urb)
 189{
 190        struct zd1201 *zd = urb->context;
 191        netif_wake_queue(zd->dev);
 192}
 193
 194/* Incoming data */
 195static void zd1201_usbrx(struct urb *urb)
 196{
 197        struct zd1201 *zd = urb->context;
 198        int free = 0;
 199        unsigned char *data = urb->transfer_buffer;
 200        struct sk_buff *skb;
 201        unsigned char type;
 202
 203        if (!zd)
 204                return;
 205
 206        switch(urb->status) {
 207                case -EILSEQ:
 208                case -ENODEV:
 209                case -ETIME:
 210                case -ENOENT:
 211                case -EPIPE:
 212                case -EOVERFLOW:
 213                case -ESHUTDOWN:
 214                        dev_warn(&zd->usb->dev, "%s: rx urb failed: %d\n",
 215                            zd->dev->name, urb->status);
 216                        free = 1;
 217                        goto exit;
 218        }
 219        
 220        if (urb->status != 0 || urb->actual_length == 0)
 221                goto resubmit;
 222
 223        type = data[0];
 224        if (type == ZD1201_PACKET_EVENTSTAT || type == ZD1201_PACKET_RESOURCE) {
 225                memcpy(zd->rxdata, data, urb->actual_length);
 226                zd->rxlen = urb->actual_length;
 227                zd->rxdatas = 1;
 228                wake_up(&zd->rxdataq);
 229        }
 230        /* Info frame */
 231        if (type == ZD1201_PACKET_INQUIRE) {
 232                int i = 0;
 233                unsigned short infotype, framelen, copylen;
 234                framelen = le16_to_cpu(*(__le16*)&data[4]);
 235                infotype = le16_to_cpu(*(__le16*)&data[6]);
 236
 237                if (infotype == ZD1201_INF_LINKSTATUS) {
 238                        short linkstatus;
 239
 240                        linkstatus = le16_to_cpu(*(__le16*)&data[8]);
 241                        switch(linkstatus) {
 242                                case 1:
 243                                        netif_carrier_on(zd->dev);
 244                                        break;
 245                                case 2:
 246                                        netif_carrier_off(zd->dev);
 247                                        break;
 248                                case 3:
 249                                        netif_carrier_off(zd->dev);
 250                                        break;
 251                                case 4:
 252                                        netif_carrier_on(zd->dev);
 253                                        break;
 254                                default:
 255                                        netif_carrier_off(zd->dev);
 256                        }
 257                        goto resubmit;
 258                }
 259                if (infotype == ZD1201_INF_ASSOCSTATUS) {
 260                        short status = le16_to_cpu(*(__le16*)(data+8));
 261                        int event;
 262                        union iwreq_data wrqu;
 263
 264                        switch (status) {
 265                                case ZD1201_ASSOCSTATUS_STAASSOC:
 266                                case ZD1201_ASSOCSTATUS_REASSOC:
 267                                        event = IWEVREGISTERED;
 268                                        break;
 269                                case ZD1201_ASSOCSTATUS_DISASSOC:
 270                                case ZD1201_ASSOCSTATUS_ASSOCFAIL:
 271                                case ZD1201_ASSOCSTATUS_AUTHFAIL:
 272                                default:
 273                                        event = IWEVEXPIRED;
 274                        }
 275                        memcpy(wrqu.addr.sa_data, data+10, ETH_ALEN);
 276                        wrqu.addr.sa_family = ARPHRD_ETHER;
 277
 278                        /* Send event to user space */
 279                        wireless_send_event(zd->dev, event, &wrqu, NULL);
 280
 281                        goto resubmit;
 282                }
 283                if (infotype == ZD1201_INF_AUTHREQ) {
 284                        union iwreq_data wrqu;
 285
 286                        memcpy(wrqu.addr.sa_data, data+8, ETH_ALEN);
 287                        wrqu.addr.sa_family = ARPHRD_ETHER;
 288                        /* There isn't a event that trully fits this request.
 289                           We assume that userspace will be smart enough to
 290                           see a new station being expired and sends back a
 291                           authstation ioctl to authorize it. */
 292                        wireless_send_event(zd->dev, IWEVEXPIRED, &wrqu, NULL);
 293                        goto resubmit;
 294                }
 295                /* Other infotypes are handled outside this handler */
 296                zd->rxlen = 0;
 297                while (i < urb->actual_length) {
 298                        copylen = le16_to_cpu(*(__le16*)&data[i+2]);
 299                        /* Sanity check, sometimes we get junk */
 300                        if (copylen+zd->rxlen > sizeof(zd->rxdata))
 301                                break;
 302                        memcpy(zd->rxdata+zd->rxlen, data+i+4, copylen);
 303                        zd->rxlen += copylen;
 304                        i += 64;
 305                }
 306                if (i >= urb->actual_length) {
 307                        zd->rxdatas = 1;
 308                        wake_up(&zd->rxdataq);
 309                }
 310                goto  resubmit;
 311        }
 312        /* Actual data */
 313        if (data[urb->actual_length-1] == ZD1201_PACKET_RXDATA) {
 314                int datalen = urb->actual_length-1;
 315                unsigned short len, fc, seq;
 316
 317                len = ntohs(*(__be16 *)&data[datalen-2]);
 318                if (len>datalen)
 319                        len=datalen;
 320                fc = le16_to_cpu(*(__le16 *)&data[datalen-16]);
 321                seq = le16_to_cpu(*(__le16 *)&data[datalen-24]);
 322
 323                if (zd->monitor) {
 324                        if (datalen < 24)
 325                                goto resubmit;
 326                        if (!(skb = dev_alloc_skb(datalen+24)))
 327                                goto resubmit;
 328                        
 329                        memcpy(skb_put(skb, 2), &data[datalen-16], 2);
 330                        memcpy(skb_put(skb, 2), &data[datalen-2], 2);
 331                        memcpy(skb_put(skb, 6), &data[datalen-14], 6);
 332                        memcpy(skb_put(skb, 6), &data[datalen-22], 6);
 333                        memcpy(skb_put(skb, 6), &data[datalen-8], 6);
 334                        memcpy(skb_put(skb, 2), &data[datalen-24], 2);
 335                        memcpy(skb_put(skb, len), data, len);
 336                        skb->protocol = eth_type_trans(skb, zd->dev);
 337                        zd->dev->stats.rx_packets++;
 338                        zd->dev->stats.rx_bytes += skb->len;
 339                        netif_rx(skb);
 340                        goto resubmit;
 341                }
 342                        
 343                if ((seq & IEEE80211_SCTL_FRAG) ||
 344                    (fc & IEEE80211_FCTL_MOREFRAGS)) {
 345                        struct zd1201_frag *frag = NULL;
 346                        char *ptr;
 347
 348                        if (datalen<14)
 349                                goto resubmit;
 350                        if ((seq & IEEE80211_SCTL_FRAG) == 0) {
 351                                frag = kmalloc(sizeof(*frag), GFP_ATOMIC);
 352                                if (!frag)
 353                                        goto resubmit;
 354                                skb = dev_alloc_skb(IEEE80211_MAX_DATA_LEN +14+2);
 355                                if (!skb) {
 356                                        kfree(frag);
 357                                        goto resubmit;
 358                                }
 359                                frag->skb = skb;
 360                                frag->seq = seq & IEEE80211_SCTL_SEQ;
 361                                skb_reserve(skb, 2);
 362                                memcpy(skb_put(skb, 12), &data[datalen-14], 12);
 363                                memcpy(skb_put(skb, 2), &data[6], 2);
 364                                memcpy(skb_put(skb, len), data+8, len);
 365                                hlist_add_head(&frag->fnode, &zd->fraglist);
 366                                goto resubmit;
 367                        }
 368                        hlist_for_each_entry(frag, &zd->fraglist, fnode)
 369                                if (frag->seq == (seq&IEEE80211_SCTL_SEQ))
 370                                        break;
 371                        if (!frag)
 372                                goto resubmit;
 373                        skb = frag->skb;
 374                        ptr = skb_put(skb, len);
 375                        if (ptr)
 376                                memcpy(ptr, data+8, len);
 377                        if (fc & IEEE80211_FCTL_MOREFRAGS)
 378                                goto resubmit;
 379                        hlist_del_init(&frag->fnode);
 380                        kfree(frag);
 381                } else {
 382                        if (datalen<14)
 383                                goto resubmit;
 384                        skb = dev_alloc_skb(len + 14 + 2);
 385                        if (!skb)
 386                                goto resubmit;
 387                        skb_reserve(skb, 2);
 388                        memcpy(skb_put(skb, 12), &data[datalen-14], 12);
 389                        memcpy(skb_put(skb, 2), &data[6], 2);
 390                        memcpy(skb_put(skb, len), data+8, len);
 391                }
 392                skb->protocol = eth_type_trans(skb, zd->dev);
 393                zd->dev->stats.rx_packets++;
 394                zd->dev->stats.rx_bytes += skb->len;
 395                netif_rx(skb);
 396        }
 397resubmit:
 398        memset(data, 0, ZD1201_RXSIZE);
 399
 400        urb->status = 0;
 401        urb->dev = zd->usb;
 402        if(usb_submit_urb(urb, GFP_ATOMIC))
 403                free = 1;
 404
 405exit:
 406        if (free) {
 407                zd->rxlen = 0;
 408                zd->rxdatas = 1;
 409                wake_up(&zd->rxdataq);
 410                kfree(urb->transfer_buffer);
 411        }
 412}
 413
 414static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
 415        unsigned int riddatalen)
 416{
 417        int err;
 418        int i = 0;
 419        int code;
 420        int rid_fid;
 421        int length;
 422        unsigned char *pdata;
 423
 424        zd->rxdatas = 0;
 425        err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
 426        if (err)
 427                return err;
 428
 429        wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 430        if (!zd->rxlen)
 431                return -EIO;
 432
 433        code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
 434        rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
 435        length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
 436        if (length > zd->rxlen)
 437                length = zd->rxlen-6;
 438
 439        /* If access bit is not on, then error */
 440        if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
 441                return -EINVAL;
 442
 443        /* Not enough buffer for allocating data */
 444        if (riddatalen != (length - 4)) {
 445                dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
 446                    riddatalen, zd->rxlen, length, rid, rid_fid);
 447                return -ENODATA;
 448        }
 449
 450        zd->rxdatas = 0;
 451        /* Issue SetRxRid commnd */                     
 452        err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
 453        if (err)
 454                return err;
 455
 456        /* Receive RID record from resource packets */
 457        wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 458        if (!zd->rxlen)
 459                return -EIO;
 460
 461        if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
 462                dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
 463                    zd->rxdata[zd->rxlen-1]);
 464                return -EINVAL;
 465        }
 466
 467        /* Set the data pointer and received data length */
 468        pdata = zd->rxdata;
 469        length = zd->rxlen;
 470
 471        do {
 472                int actual_length;
 473
 474                actual_length = (length > 64) ? 64 : length;
 475
 476                if (pdata[0] != 0x3) {
 477                        dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
 478                            pdata[0]);
 479                        return -EINVAL;
 480                }
 481
 482                if (actual_length != 64) {
 483                        /* Trim the last packet type byte */
 484                        actual_length--;
 485                }
 486
 487                /* Skip the 4 bytes header (RID length and RID) */
 488                if (i == 0) {
 489                        pdata += 8;
 490                        actual_length -= 8;
 491                } else {
 492                        pdata += 4;
 493                        actual_length -= 4;
 494                }
 495                
 496                memcpy(riddata, pdata, actual_length);
 497                riddata += actual_length;
 498                pdata += actual_length;
 499                length -= 64;
 500                i++;
 501        } while (length > 0);
 502
 503        return 0;
 504}
 505
 506/*
 507 *      resreq:
 508 *              byte    type
 509 *              byte    sequence
 510 *              u16     reserved
 511 *              byte    data[12]
 512 *      total: 16
 513 */
 514static int zd1201_setconfig(struct zd1201 *zd, int rid, void *buf, int len, int wait)
 515{
 516        int err;
 517        unsigned char *request;
 518        int reqlen;
 519        char seq=0;
 520        struct urb *urb;
 521        gfp_t gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
 522
 523        len += 4;                       /* first 4 are for header */
 524
 525        zd->rxdatas = 0;
 526        zd->rxlen = 0;
 527        for (seq=0; len > 0; seq++) {
 528                request = kmalloc(16, gfp_mask);
 529                if (!request)
 530                        return -ENOMEM;
 531                urb = usb_alloc_urb(0, gfp_mask);
 532                if (!urb) {
 533                        kfree(request);
 534                        return -ENOMEM;
 535                }
 536                memset(request, 0, 16);
 537                reqlen = len>12 ? 12 : len;
 538                request[0] = ZD1201_USB_RESREQ;
 539                request[1] = seq;
 540                request[2] = 0;
 541                request[3] = 0;
 542                if (request[1] == 0) {
 543                        /* add header */
 544                        *(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
 545                        *(__le16*)&request[6] = cpu_to_le16(rid);
 546                        memcpy(request+8, buf, reqlen-4);
 547                        buf += reqlen-4;
 548                } else {
 549                        memcpy(request+4, buf, reqlen);
 550                        buf += reqlen;
 551                }
 552
 553                len -= reqlen;
 554
 555                usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
 556                    zd->endp_out2), request, 16, zd1201_usbfree, zd);
 557                err = usb_submit_urb(urb, gfp_mask);
 558                if (err)
 559                        goto err;
 560        }
 561
 562        request = kmalloc(16, gfp_mask);
 563        if (!request)
 564                return -ENOMEM;
 565        urb = usb_alloc_urb(0, gfp_mask);
 566        if (!urb) {
 567                kfree(request);
 568                return -ENOMEM;
 569        }
 570        *((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
 571        *((__le16*)&request[4]) = 
 572            cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
 573        *((__le16*)&request[6]) = cpu_to_le16(rid);
 574        *((__le16*)&request[8]) = cpu_to_le16(0);
 575        *((__le16*)&request[10]) = cpu_to_le16(0);
 576        usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 577             request, 16, zd1201_usbfree, zd);
 578        err = usb_submit_urb(urb, gfp_mask);
 579        if (err)
 580                goto err;
 581        
 582        if (wait) {
 583                wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 584                if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
 585                        dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
 586                }
 587        }
 588
 589        return 0;
 590err:
 591        kfree(request);
 592        usb_free_urb(urb);
 593        return err;
 594}
 595
 596static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
 597{
 598        int err;
 599        __le16 zdval;
 600
 601        err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
 602        if (err)
 603                return err;
 604        *val = le16_to_cpu(zdval);
 605        return 0;
 606}
 607
 608static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
 609{
 610        __le16 zdval = cpu_to_le16(val);
 611        return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
 612}
 613
 614static int zd1201_drvr_start(struct zd1201 *zd)
 615{
 616        int err, i;
 617        short max;
 618        __le16 zdmax;
 619        unsigned char *buffer;
 620
 621        buffer = kzalloc(ZD1201_RXSIZE, GFP_KERNEL);
 622        if (!buffer)
 623                return -ENOMEM;
 624
 625        usb_fill_bulk_urb(zd->rx_urb, zd->usb, 
 626            usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
 627            zd1201_usbrx, zd);
 628
 629        err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
 630        if (err)
 631                goto err_buffer;
 632
 633        err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
 634        if (err)
 635                goto err_urb;
 636
 637        err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
 638            sizeof(__le16));
 639        if (err)
 640                goto err_urb;
 641
 642        max = le16_to_cpu(zdmax);
 643        for (i=0; i<max; i++) {
 644                err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
 645                if (err)
 646                        goto err_urb;
 647        }
 648
 649        return 0;
 650
 651err_urb:
 652        usb_kill_urb(zd->rx_urb);
 653        return err;
 654err_buffer:
 655        kfree(buffer);
 656        return err;
 657}
 658
 659/*      Magic alert: The firmware doesn't seem to like the MAC state being
 660 *      toggled in promisc (aka monitor) mode.
 661 *      (It works a number of times, but will halt eventually)
 662 *      So we turn it of before disabling and on after enabling if needed.
 663 */
 664static int zd1201_enable(struct zd1201 *zd)
 665{
 666        int err;
 667
 668        if (zd->mac_enabled)
 669                return 0;
 670
 671        err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
 672        if (!err)
 673                zd->mac_enabled = 1;
 674
 675        if (zd->monitor)
 676                err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
 677
 678        return err;
 679}
 680
 681static int zd1201_disable(struct zd1201 *zd)
 682{
 683        int err;
 684
 685        if (!zd->mac_enabled)
 686                return 0;
 687        if (zd->monitor) {
 688                err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 689                if (err)
 690                        return err;
 691        }
 692
 693        err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
 694        if (!err)
 695                zd->mac_enabled = 0;
 696        return err;
 697}
 698
 699static int zd1201_mac_reset(struct zd1201 *zd)
 700{
 701        if (!zd->mac_enabled)
 702                return 0;
 703        zd1201_disable(zd);
 704        return zd1201_enable(zd);
 705}
 706
 707static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
 708{
 709        int err, val;
 710        char buf[IW_ESSID_MAX_SIZE+2];
 711
 712        err = zd1201_disable(zd);
 713        if (err)
 714                return err;
 715
 716        val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
 717        val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
 718        err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
 719        if (err)
 720                return err;
 721
 722        *(__le16 *)buf = cpu_to_le16(essidlen);
 723        memcpy(buf+2, essid, essidlen);
 724        if (!zd->ap) {  /* Normal station */
 725                err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
 726                    IW_ESSID_MAX_SIZE+2, 1);
 727                if (err)
 728                        return err;
 729        } else {        /* AP */
 730                err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
 731                    IW_ESSID_MAX_SIZE+2, 1);
 732                if (err)
 733                        return err;
 734        }
 735
 736        err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR, 
 737            zd->dev->dev_addr, zd->dev->addr_len, 1);
 738        if (err)
 739                return err;
 740
 741        err = zd1201_enable(zd);
 742        if (err)
 743                return err;
 744
 745        msleep(100);
 746        return 0;
 747}
 748
 749static int zd1201_net_open(struct net_device *dev)
 750{
 751        struct zd1201 *zd = netdev_priv(dev);
 752
 753        /* Start MAC with wildcard if no essid set */
 754        if (!zd->mac_enabled)
 755                zd1201_join(zd, zd->essid, zd->essidlen);
 756        netif_start_queue(dev);
 757
 758        return 0;
 759}
 760
 761static int zd1201_net_stop(struct net_device *dev)
 762{
 763        netif_stop_queue(dev);
 764        return 0;
 765}
 766
 767/*
 768        RFC 1042 encapsulates Ethernet frames in 802.11 frames
 769        by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
 770        (0x00, 0x00, 0x00). Zd requires an additional padding, copy
 771        of ethernet addresses, length of the standard RFC 1042 packet
 772        and a command byte (which is nul for tx).
 773        
 774        tx frame (from Wlan NG):
 775        RFC 1042:
 776                llc             0xAA 0xAA 0x03 (802.2 LLC)
 777                snap            0x00 0x00 0x00 (Ethernet encapsulated)
 778                type            2 bytes, Ethernet type field
 779                payload         (minus eth header)
 780        Zydas specific:
 781                padding         1B if (skb->len+8+1)%64==0
 782                Eth MAC addr    12 bytes, Ethernet MAC addresses
 783                length          2 bytes, RFC 1042 packet length 
 784                                (llc+snap+type+payload)
 785                zd              1 null byte, zd1201 packet type
 786 */
 787static netdev_tx_t zd1201_hard_start_xmit(struct sk_buff *skb,
 788                                                struct net_device *dev)
 789{
 790        struct zd1201 *zd = netdev_priv(dev);
 791        unsigned char *txbuf = zd->txdata;
 792        int txbuflen, pad = 0, err;
 793        struct urb *urb = zd->tx_urb;
 794
 795        if (!zd->mac_enabled || zd->monitor) {
 796                dev->stats.tx_dropped++;
 797                kfree_skb(skb);
 798                return NETDEV_TX_OK;
 799        }
 800        netif_stop_queue(dev);
 801
 802        txbuflen = skb->len + 8 + 1;
 803        if (txbuflen%64 == 0) {
 804                pad = 1;
 805                txbuflen++;
 806        }
 807        txbuf[0] = 0xAA;
 808        txbuf[1] = 0xAA;
 809        txbuf[2] = 0x03;
 810        txbuf[3] = 0x00;        /* rfc1042 */
 811        txbuf[4] = 0x00;
 812        txbuf[5] = 0x00;
 813
 814        skb_copy_from_linear_data_offset(skb, 12, txbuf + 6, skb->len - 12);
 815        if (pad)
 816                txbuf[skb->len-12+6]=0;
 817        skb_copy_from_linear_data(skb, txbuf + skb->len - 12 + 6 + pad, 12);
 818        *(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
 819        txbuf[txbuflen-1] = 0;
 820
 821        usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
 822            txbuf, txbuflen, zd1201_usbtx, zd);
 823
 824        err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
 825        if (err) {
 826                dev->stats.tx_errors++;
 827                netif_start_queue(dev);
 828        } else {
 829                dev->stats.tx_packets++;
 830                dev->stats.tx_bytes += skb->len;
 831        }
 832        kfree_skb(skb);
 833
 834        return NETDEV_TX_OK;
 835}
 836
 837static void zd1201_tx_timeout(struct net_device *dev)
 838{
 839        struct zd1201 *zd = netdev_priv(dev);
 840
 841        if (!zd)
 842                return;
 843        dev_warn(&zd->usb->dev, "%s: TX timeout, shooting down urb\n",
 844            dev->name);
 845        usb_unlink_urb(zd->tx_urb);
 846        dev->stats.tx_errors++;
 847        /* Restart the timeout to quiet the watchdog: */
 848        dev->trans_start = jiffies; /* prevent tx timeout */
 849}
 850
 851static int zd1201_set_mac_address(struct net_device *dev, void *p)
 852{
 853        struct sockaddr *addr = p;
 854        struct zd1201 *zd = netdev_priv(dev);
 855        int err;
 856
 857        if (!zd)
 858                return -ENODEV;
 859
 860        err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR, 
 861            addr->sa_data, dev->addr_len, 1);
 862        if (err)
 863                return err;
 864        memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
 865
 866        return zd1201_mac_reset(zd);
 867}
 868
 869static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
 870{
 871        struct zd1201 *zd = netdev_priv(dev);
 872
 873        return &zd->iwstats;
 874}
 875
 876static void zd1201_set_multicast(struct net_device *dev)
 877{
 878        struct zd1201 *zd = netdev_priv(dev);
 879        struct netdev_hw_addr *ha;
 880        unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
 881        int i;
 882
 883        if (netdev_mc_count(dev) > ZD1201_MAXMULTI)
 884                return;
 885
 886        i = 0;
 887        netdev_for_each_mc_addr(ha, dev)
 888                memcpy(reqbuf + i++ * ETH_ALEN, ha->addr, ETH_ALEN);
 889        zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
 890                         netdev_mc_count(dev) * ETH_ALEN, 0);
 891}
 892
 893static int zd1201_config_commit(struct net_device *dev, 
 894    struct iw_request_info *info, struct iw_point *data, char *essid)
 895{
 896        struct zd1201 *zd = netdev_priv(dev);
 897
 898        return zd1201_mac_reset(zd);
 899}
 900
 901static int zd1201_get_name(struct net_device *dev,
 902    struct iw_request_info *info, char *name, char *extra)
 903{
 904        strcpy(name, "IEEE 802.11b");
 905        return 0;
 906}
 907
 908static int zd1201_set_freq(struct net_device *dev,
 909    struct iw_request_info *info, struct iw_freq *freq, char *extra)
 910{
 911        struct zd1201 *zd = netdev_priv(dev);
 912        short channel = 0;
 913        int err;
 914
 915        if (freq->e == 0)
 916                channel = freq->m;
 917        else
 918                channel = ieee80211_frequency_to_channel(freq->m);
 919
 920        err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
 921        if (err)
 922                return err;
 923
 924        zd1201_mac_reset(zd);
 925
 926        return 0;
 927}
 928
 929static int zd1201_get_freq(struct net_device *dev,
 930    struct iw_request_info *info, struct iw_freq *freq, char *extra)
 931{
 932        struct zd1201 *zd = netdev_priv(dev);
 933        short channel;
 934        int err;
 935
 936        err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
 937        if (err)
 938                return err;
 939        freq->e = 0;
 940        freq->m = channel;
 941
 942        return 0;
 943}
 944
 945static int zd1201_set_mode(struct net_device *dev,
 946    struct iw_request_info *info, __u32 *mode, char *extra)
 947{
 948        struct zd1201 *zd = netdev_priv(dev);
 949        short porttype, monitor = 0;
 950        unsigned char buffer[IW_ESSID_MAX_SIZE+2];
 951        int err;
 952
 953        if (zd->ap) {
 954                if (*mode != IW_MODE_MASTER)
 955                        return -EINVAL;
 956                return 0;
 957        }
 958
 959        err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 960        if (err)
 961                return err;
 962        zd->dev->type = ARPHRD_ETHER;
 963        switch(*mode) {
 964                case IW_MODE_MONITOR:
 965                        monitor = 1;
 966                        zd->dev->type = ARPHRD_IEEE80211;
 967                        /* Make sure we are no longer associated with by
 968                           setting an 'impossible' essid.
 969                           (otherwise we mess up firmware)
 970                         */
 971                        zd1201_join(zd, "\0-*#\0", 5);
 972                        /* Put port in pIBSS */
 973                case 8: /* No pseudo-IBSS in wireless extensions (yet) */
 974                        porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
 975                        break;
 976                case IW_MODE_ADHOC:
 977                        porttype = ZD1201_PORTTYPE_IBSS;
 978                        break;
 979                case IW_MODE_INFRA:
 980                        porttype = ZD1201_PORTTYPE_BSS;
 981                        break;
 982                default:
 983                        return -EINVAL;
 984        }
 985
 986        err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
 987        if (err)
 988                return err;
 989        if (zd->monitor && !monitor) {
 990                        zd1201_disable(zd);
 991                        *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
 992                        memcpy(buffer+2, zd->essid, zd->essidlen);
 993                        err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
 994                            buffer, IW_ESSID_MAX_SIZE+2, 1);
 995                        if (err)
 996                                return err;
 997        }
 998        zd->monitor = monitor;
 999        /* If monitor mode is set we don't actually turn it on here since it
1000         * is done during mac reset anyway (see zd1201_mac_enable).
1001         */
1002        zd1201_mac_reset(zd);
1003
1004        return 0;
1005}
1006
1007static int zd1201_get_mode(struct net_device *dev,
1008    struct iw_request_info *info, __u32 *mode, char *extra)
1009{
1010        struct zd1201 *zd = netdev_priv(dev);
1011        short porttype;
1012        int err;
1013
1014        err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1015        if (err)
1016                return err;
1017        switch(porttype) {
1018                case ZD1201_PORTTYPE_IBSS:
1019                        *mode = IW_MODE_ADHOC;
1020                        break;
1021                case ZD1201_PORTTYPE_BSS:
1022                        *mode = IW_MODE_INFRA;
1023                        break;
1024                case ZD1201_PORTTYPE_WDS:
1025                        *mode = IW_MODE_REPEAT;
1026                        break;
1027                case ZD1201_PORTTYPE_PSEUDOIBSS:
1028                        *mode = 8;/* No Pseudo-IBSS... */
1029                        break;
1030                case ZD1201_PORTTYPE_AP:
1031                        *mode = IW_MODE_MASTER;
1032                        break;
1033                default:
1034                        dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1035                            porttype);
1036                        *mode = IW_MODE_AUTO;
1037        }
1038        if (zd->monitor)
1039                *mode = IW_MODE_MONITOR;
1040
1041        return 0;
1042}
1043
1044static int zd1201_get_range(struct net_device *dev,
1045    struct iw_request_info *info, struct iw_point *wrq, char *extra)
1046{
1047        struct iw_range *range = (struct iw_range *)extra;
1048
1049        wrq->length = sizeof(struct iw_range);
1050        memset(range, 0, sizeof(struct iw_range));
1051        range->we_version_compiled = WIRELESS_EXT;
1052        range->we_version_source = WIRELESS_EXT;
1053
1054        range->max_qual.qual = 128;
1055        range->max_qual.level = 128;
1056        range->max_qual.noise = 128;
1057        range->max_qual.updated = 7;
1058
1059        range->encoding_size[0] = 5;
1060        range->encoding_size[1] = 13;
1061        range->num_encoding_sizes = 2;
1062        range->max_encoding_tokens = ZD1201_NUMKEYS;
1063
1064        range->num_bitrates = 4;
1065        range->bitrate[0] = 1000000;
1066        range->bitrate[1] = 2000000;
1067        range->bitrate[2] = 5500000;
1068        range->bitrate[3] = 11000000;
1069
1070        range->min_rts = 0;
1071        range->min_frag = ZD1201_FRAGMIN;
1072        range->max_rts = ZD1201_RTSMAX;
1073        range->min_frag = ZD1201_FRAGMAX;
1074
1075        return 0;
1076}
1077
1078/*      Little bit of magic here: we only get the quality if we poll
1079 *      for it, and we never get an actual request to trigger such
1080 *      a poll. Therefore we 'assume' that the user will soon ask for
1081 *      the stats after asking the bssid.
1082 */
1083static int zd1201_get_wap(struct net_device *dev,
1084    struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1085{
1086        struct zd1201 *zd = netdev_priv(dev);
1087        unsigned char buffer[6];
1088
1089        if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1090                /* Unfortunately the quality and noise reported is useless.
1091                   they seem to be accumulators that increase until you
1092                   read them, unless we poll on a fixed interval we can't
1093                   use them
1094                 */
1095                /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1096                zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1097                /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1098                zd->iwstats.qual.updated = 2;
1099        }
1100
1101        return zd1201_getconfig(zd, ZD1201_RID_CURRENTBSSID, ap_addr->sa_data, 6);
1102}
1103
1104static int zd1201_set_scan(struct net_device *dev,
1105    struct iw_request_info *info, struct iw_point *srq, char *extra)
1106{
1107        /* We do everything in get_scan */
1108        return 0;
1109}
1110
1111static int zd1201_get_scan(struct net_device *dev,
1112    struct iw_request_info *info, struct iw_point *srq, char *extra)
1113{
1114        struct zd1201 *zd = netdev_priv(dev);
1115        int err, i, j, enabled_save;
1116        struct iw_event iwe;
1117        char *cev = extra;
1118        char *end_buf = extra + IW_SCAN_MAX_DATA;
1119
1120        /* No scanning in AP mode */
1121        if (zd->ap)
1122                return -EOPNOTSUPP;
1123
1124        /* Scan doesn't seem to work if disabled */
1125        enabled_save = zd->mac_enabled;
1126        zd1201_enable(zd);
1127
1128        zd->rxdatas = 0;
1129        err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE, 
1130             ZD1201_INQ_SCANRESULTS, 0, 0);
1131        if (err)
1132                return err;
1133
1134        wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1135        if (!zd->rxlen)
1136                return -EIO;
1137
1138        if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1139                return -EIO;
1140
1141        for(i=8; i<zd->rxlen; i+=62) {
1142                iwe.cmd = SIOCGIWAP;
1143                iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1144                memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1145                cev = iwe_stream_add_event(info, cev, end_buf,
1146                                           &iwe, IW_EV_ADDR_LEN);
1147
1148                iwe.cmd = SIOCGIWESSID;
1149                iwe.u.data.length = zd->rxdata[i+16];
1150                iwe.u.data.flags = 1;
1151                cev = iwe_stream_add_point(info, cev, end_buf,
1152                                           &iwe, zd->rxdata+i+18);
1153
1154                iwe.cmd = SIOCGIWMODE;
1155                if (zd->rxdata[i+14]&0x01)
1156                        iwe.u.mode = IW_MODE_MASTER;
1157                else
1158                        iwe.u.mode = IW_MODE_ADHOC;
1159                cev = iwe_stream_add_event(info, cev, end_buf,
1160                                           &iwe, IW_EV_UINT_LEN);
1161                
1162                iwe.cmd = SIOCGIWFREQ;
1163                iwe.u.freq.m = zd->rxdata[i+0];
1164                iwe.u.freq.e = 0;
1165                cev = iwe_stream_add_event(info, cev, end_buf,
1166                                           &iwe, IW_EV_FREQ_LEN);
1167                
1168                iwe.cmd = SIOCGIWRATE;
1169                iwe.u.bitrate.fixed = 0;
1170                iwe.u.bitrate.disabled = 0;
1171                for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
1172                        iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
1173                        cev = iwe_stream_add_event(info, cev, end_buf,
1174                                                   &iwe, IW_EV_PARAM_LEN);
1175                }
1176                
1177                iwe.cmd = SIOCGIWENCODE;
1178                iwe.u.data.length = 0;
1179                if (zd->rxdata[i+14]&0x10)
1180                        iwe.u.data.flags = IW_ENCODE_ENABLED;
1181                else
1182                        iwe.u.data.flags = IW_ENCODE_DISABLED;
1183                cev = iwe_stream_add_point(info, cev, end_buf, &iwe, NULL);
1184                
1185                iwe.cmd = IWEVQUAL;
1186                iwe.u.qual.qual = zd->rxdata[i+4];
1187                iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
1188                iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
1189                iwe.u.qual.updated = 7;
1190                cev = iwe_stream_add_event(info, cev, end_buf,
1191                                           &iwe, IW_EV_QUAL_LEN);
1192        }
1193
1194        if (!enabled_save)
1195                zd1201_disable(zd);
1196
1197        srq->length = cev - extra;
1198        srq->flags = 0;
1199
1200        return 0;
1201}
1202
1203static int zd1201_set_essid(struct net_device *dev,
1204    struct iw_request_info *info, struct iw_point *data, char *essid)
1205{
1206        struct zd1201 *zd = netdev_priv(dev);
1207
1208        if (data->length > IW_ESSID_MAX_SIZE)
1209                return -EINVAL;
1210        if (data->length < 1)
1211                data->length = 1;
1212        zd->essidlen = data->length;
1213        memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1214        memcpy(zd->essid, essid, data->length);
1215        return zd1201_join(zd, zd->essid, zd->essidlen);
1216}
1217
1218static int zd1201_get_essid(struct net_device *dev,
1219    struct iw_request_info *info, struct iw_point *data, char *essid)
1220{
1221        struct zd1201 *zd = netdev_priv(dev);
1222
1223        memcpy(essid, zd->essid, zd->essidlen);
1224        data->flags = 1;
1225        data->length = zd->essidlen;
1226
1227        return 0;
1228}
1229
1230static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1231    struct iw_point *data, char *nick)
1232{
1233        strcpy(nick, "zd1201");
1234        data->flags = 1;
1235        data->length = strlen(nick);
1236        return 0;
1237}
1238
1239static int zd1201_set_rate(struct net_device *dev,
1240    struct iw_request_info *info, struct iw_param *rrq, char *extra)
1241{
1242        struct zd1201 *zd = netdev_priv(dev);
1243        short rate;
1244        int err;
1245
1246        switch (rrq->value) {
1247                case 1000000:
1248                        rate = ZD1201_RATEB1;
1249                        break;
1250                case 2000000:
1251                        rate = ZD1201_RATEB2;
1252                        break;
1253                case 5500000:
1254                        rate = ZD1201_RATEB5;
1255                        break;
1256                case 11000000:
1257                default:
1258                        rate = ZD1201_RATEB11;
1259                        break;
1260        }
1261        if (!rrq->fixed) { /* Also enable all lower bitrates */
1262                rate |= rate-1;
1263        }
1264
1265        err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1266        if (err)
1267                return err;
1268
1269        return zd1201_mac_reset(zd);
1270}
1271
1272static int zd1201_get_rate(struct net_device *dev,
1273    struct iw_request_info *info, struct iw_param *rrq, char *extra)
1274{
1275        struct zd1201 *zd = netdev_priv(dev);
1276        short rate;
1277        int err;
1278
1279        err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1280        if (err)
1281                return err;
1282
1283        switch(rate) {
1284                case 1:
1285                        rrq->value = 1000000;
1286                        break;
1287                case 2:
1288                        rrq->value = 2000000;
1289                        break;
1290                case 5:
1291                        rrq->value = 5500000;
1292                        break;
1293                case 11:
1294                        rrq->value = 11000000;
1295                        break;
1296                default:
1297                        rrq->value = 0;
1298        }
1299        rrq->fixed = 0;
1300        rrq->disabled = 0;
1301
1302        return 0;
1303}
1304
1305static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1306    struct iw_param *rts, char *extra)
1307{
1308        struct zd1201 *zd = netdev_priv(dev);
1309        int err;
1310        short val = rts->value;
1311
1312        if (rts->disabled || !rts->fixed)
1313                val = ZD1201_RTSMAX;
1314        if (val > ZD1201_RTSMAX)
1315                return -EINVAL;
1316        if (val < 0)
1317                return -EINVAL;
1318
1319        err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1320        if (err)
1321                return err;
1322        return zd1201_mac_reset(zd);
1323}
1324
1325static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1326    struct iw_param *rts, char *extra)
1327{
1328        struct zd1201 *zd = netdev_priv(dev);
1329        short rtst;
1330        int err;
1331
1332        err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1333        if (err)
1334                return err;
1335        rts->value = rtst;
1336        rts->disabled = (rts->value == ZD1201_RTSMAX);
1337        rts->fixed = 1;
1338
1339        return 0;
1340}
1341
1342static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1343    struct iw_param *frag, char *extra)
1344{
1345        struct zd1201 *zd = netdev_priv(dev);
1346        int err;
1347        short val = frag->value;
1348
1349        if (frag->disabled || !frag->fixed)
1350                val = ZD1201_FRAGMAX;
1351        if (val > ZD1201_FRAGMAX)
1352                return -EINVAL;
1353        if (val < ZD1201_FRAGMIN)
1354                return -EINVAL;
1355        if (val & 1)
1356                return -EINVAL;
1357        err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1358        if (err)
1359                return err;
1360        return zd1201_mac_reset(zd);
1361}
1362
1363static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1364    struct iw_param *frag, char *extra)
1365{
1366        struct zd1201 *zd = netdev_priv(dev);
1367        short fragt;
1368        int err;
1369
1370        err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1371        if (err)
1372                return err;
1373        frag->value = fragt;
1374        frag->disabled = (frag->value == ZD1201_FRAGMAX);
1375        frag->fixed = 1;
1376
1377        return 0;
1378}
1379
1380static int zd1201_set_retry(struct net_device *dev,
1381    struct iw_request_info *info, struct iw_param *rrq, char *extra)
1382{
1383        return 0;
1384}
1385
1386static int zd1201_get_retry(struct net_device *dev,
1387    struct iw_request_info *info, struct iw_param *rrq, char *extra)
1388{
1389        return 0;
1390}
1391
1392static int zd1201_set_encode(struct net_device *dev,
1393    struct iw_request_info *info, struct iw_point *erq, char *key)
1394{
1395        struct zd1201 *zd = netdev_priv(dev);
1396        short i;
1397        int err, rid;
1398
1399        if (erq->length > ZD1201_MAXKEYLEN)
1400                return -EINVAL;
1401
1402        i = (erq->flags & IW_ENCODE_INDEX)-1;
1403        if (i == -1) {
1404                err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1405                if (err)
1406                        return err;
1407        } else {
1408                err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1409                if (err)
1410                        return err;
1411        }
1412
1413        if (i < 0 || i >= ZD1201_NUMKEYS)
1414                return -EINVAL;
1415
1416        rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1417        err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1418        if (err)
1419                return err;
1420        zd->encode_keylen[i] = erq->length;
1421        memcpy(zd->encode_keys[i], key, erq->length);
1422
1423        i=0;
1424        if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1425                i |= 0x01;
1426                zd->encode_enabled = 1;
1427        } else
1428                zd->encode_enabled = 0;
1429        if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1430                i |= 0x02;
1431                zd->encode_restricted = 1;
1432        } else
1433                zd->encode_restricted = 0;
1434        err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1435        if (err)
1436                return err;
1437
1438        if (zd->encode_enabled)
1439                i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1440        else
1441                i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1442        err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1443        if (err)
1444                return err;
1445
1446        return zd1201_mac_reset(zd);
1447}
1448
1449static int zd1201_get_encode(struct net_device *dev,
1450    struct iw_request_info *info, struct iw_point *erq, char *key)
1451{
1452        struct zd1201 *zd = netdev_priv(dev);
1453        short i;
1454        int err;
1455
1456        if (zd->encode_enabled)
1457                erq->flags = IW_ENCODE_ENABLED;
1458        else
1459                erq->flags = IW_ENCODE_DISABLED;
1460        if (zd->encode_restricted)
1461                erq->flags |= IW_ENCODE_RESTRICTED;
1462        else
1463                erq->flags |= IW_ENCODE_OPEN;
1464
1465        i = (erq->flags & IW_ENCODE_INDEX) -1;
1466        if (i == -1) {
1467                err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1468                if (err)
1469                        return err;
1470        }
1471        if (i<0 || i>= ZD1201_NUMKEYS)
1472                return -EINVAL;
1473
1474        erq->flags |= i+1;
1475
1476        erq->length = zd->encode_keylen[i];
1477        memcpy(key, zd->encode_keys[i], erq->length);
1478
1479        return 0;
1480}
1481
1482static int zd1201_set_power(struct net_device *dev, 
1483    struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1484{
1485        struct zd1201 *zd = netdev_priv(dev);
1486        short enabled, duration, level;
1487        int err;
1488
1489        enabled = vwrq->disabled ? 0 : 1;
1490        if (enabled) {
1491                if (vwrq->flags & IW_POWER_PERIOD) {
1492                        duration = vwrq->value;
1493                        err = zd1201_setconfig16(zd, 
1494                            ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1495                        if (err)
1496                                return err;
1497                        goto out;
1498                }
1499                if (vwrq->flags & IW_POWER_TIMEOUT) {
1500                        err = zd1201_getconfig16(zd, 
1501                            ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1502                        if (err)
1503                                return err;
1504                        level = vwrq->value * 4 / duration;
1505                        if (level > 4)
1506                                level = 4;
1507                        if (level < 0)
1508                                level = 0;
1509                        err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1510                            level);
1511                        if (err)
1512                                return err;
1513                        goto out;
1514                }
1515                return -EINVAL;
1516        }
1517out:
1518        return zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1519}
1520
1521static int zd1201_get_power(struct net_device *dev,
1522    struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1523{
1524        struct zd1201 *zd = netdev_priv(dev);
1525        short enabled, level, duration;
1526        int err;
1527
1528        err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1529        if (err)
1530                return err;
1531        err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1532        if (err)
1533                return err;
1534        err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1535        if (err)
1536                return err;
1537        vwrq->disabled = enabled ? 0 : 1;
1538        if (vwrq->flags & IW_POWER_TYPE) {
1539                if (vwrq->flags & IW_POWER_PERIOD) {
1540                        vwrq->value = duration;
1541                        vwrq->flags = IW_POWER_PERIOD;
1542                } else {
1543                        vwrq->value = duration * level / 4;
1544                        vwrq->flags = IW_POWER_TIMEOUT;
1545                }
1546        }
1547        if (vwrq->flags & IW_POWER_MODE) {
1548                if (enabled && level)
1549                        vwrq->flags = IW_POWER_UNICAST_R;
1550                else
1551                        vwrq->flags = IW_POWER_ALL_R;
1552        }
1553
1554        return 0;
1555}
1556
1557
1558static const iw_handler zd1201_iw_handler[] =
1559{
1560        (iw_handler) zd1201_config_commit,      /* SIOCSIWCOMMIT */
1561        (iw_handler) zd1201_get_name,           /* SIOCGIWNAME */
1562        (iw_handler) NULL,                      /* SIOCSIWNWID */
1563        (iw_handler) NULL,                      /* SIOCGIWNWID */
1564        (iw_handler) zd1201_set_freq,           /* SIOCSIWFREQ */
1565        (iw_handler) zd1201_get_freq,           /* SIOCGIWFREQ */
1566        (iw_handler) zd1201_set_mode,           /* SIOCSIWMODE */
1567        (iw_handler) zd1201_get_mode,           /* SIOCGIWMODE */
1568        (iw_handler) NULL,                      /* SIOCSIWSENS */
1569        (iw_handler) NULL,                      /* SIOCGIWSENS */
1570        (iw_handler) NULL,                      /* SIOCSIWRANGE */
1571        (iw_handler) zd1201_get_range,           /* SIOCGIWRANGE */
1572        (iw_handler) NULL,                      /* SIOCSIWPRIV */
1573        (iw_handler) NULL,                      /* SIOCGIWPRIV */
1574        (iw_handler) NULL,                      /* SIOCSIWSTATS */
1575        (iw_handler) NULL,                      /* SIOCGIWSTATS */
1576        (iw_handler) NULL,                      /* SIOCSIWSPY */
1577        (iw_handler) NULL,                      /* SIOCGIWSPY */
1578        (iw_handler) NULL,                      /* -- hole -- */
1579        (iw_handler) NULL,                      /* -- hole -- */
1580        (iw_handler) NULL/*zd1201_set_wap*/,            /* SIOCSIWAP */
1581        (iw_handler) zd1201_get_wap,            /* SIOCGIWAP */
1582        (iw_handler) NULL,                      /* -- hole -- */
1583        (iw_handler) NULL,                      /* SIOCGIWAPLIST */
1584        (iw_handler) zd1201_set_scan,           /* SIOCSIWSCAN */
1585        (iw_handler) zd1201_get_scan,           /* SIOCGIWSCAN */
1586        (iw_handler) zd1201_set_essid,          /* SIOCSIWESSID */
1587        (iw_handler) zd1201_get_essid,          /* SIOCGIWESSID */
1588        (iw_handler) NULL,                      /* SIOCSIWNICKN */
1589        (iw_handler) zd1201_get_nick,           /* SIOCGIWNICKN */
1590        (iw_handler) NULL,                      /* -- hole -- */
1591        (iw_handler) NULL,                      /* -- hole -- */
1592        (iw_handler) zd1201_set_rate,           /* SIOCSIWRATE */
1593        (iw_handler) zd1201_get_rate,           /* SIOCGIWRATE */
1594        (iw_handler) zd1201_set_rts,            /* SIOCSIWRTS */
1595        (iw_handler) zd1201_get_rts,            /* SIOCGIWRTS */
1596        (iw_handler) zd1201_set_frag,           /* SIOCSIWFRAG */
1597        (iw_handler) zd1201_get_frag,           /* SIOCGIWFRAG */
1598        (iw_handler) NULL,                      /* SIOCSIWTXPOW */
1599        (iw_handler) NULL,                      /* SIOCGIWTXPOW */
1600        (iw_handler) zd1201_set_retry,          /* SIOCSIWRETRY */
1601        (iw_handler) zd1201_get_retry,          /* SIOCGIWRETRY */
1602        (iw_handler) zd1201_set_encode,         /* SIOCSIWENCODE */
1603        (iw_handler) zd1201_get_encode,         /* SIOCGIWENCODE */
1604        (iw_handler) zd1201_set_power,          /* SIOCSIWPOWER */
1605        (iw_handler) zd1201_get_power,          /* SIOCGIWPOWER */
1606};
1607
1608static int zd1201_set_hostauth(struct net_device *dev,
1609    struct iw_request_info *info, struct iw_param *rrq, char *extra)
1610{
1611        struct zd1201 *zd = netdev_priv(dev);
1612
1613        if (!zd->ap)
1614                return -EOPNOTSUPP;
1615
1616        return zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1617}
1618
1619static int zd1201_get_hostauth(struct net_device *dev,
1620    struct iw_request_info *info, struct iw_param *rrq, char *extra)
1621{
1622        struct zd1201 *zd = netdev_priv(dev);
1623        short hostauth;
1624        int err;
1625
1626        if (!zd->ap)
1627                return -EOPNOTSUPP;
1628
1629        err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1630        if (err)
1631                return err;
1632        rrq->value = hostauth;
1633        rrq->fixed = 1;
1634
1635        return 0;
1636}
1637
1638static int zd1201_auth_sta(struct net_device *dev,
1639    struct iw_request_info *info, struct sockaddr *sta, char *extra)
1640{
1641        struct zd1201 *zd = netdev_priv(dev);
1642        unsigned char buffer[10];
1643
1644        if (!zd->ap)
1645                return -EOPNOTSUPP;
1646
1647        memcpy(buffer, sta->sa_data, ETH_ALEN);
1648        *(short*)(buffer+6) = 0;        /* 0==success, 1==failure */
1649        *(short*)(buffer+8) = 0;
1650
1651        return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1652}
1653
1654static int zd1201_set_maxassoc(struct net_device *dev,
1655    struct iw_request_info *info, struct iw_param *rrq, char *extra)
1656{
1657        struct zd1201 *zd = netdev_priv(dev);
1658        int err;
1659
1660        if (!zd->ap)
1661                return -EOPNOTSUPP;
1662
1663        err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1664        if (err)
1665                return err;
1666        return 0;
1667}
1668
1669static int zd1201_get_maxassoc(struct net_device *dev,
1670    struct iw_request_info *info, struct iw_param *rrq, char *extra)
1671{
1672        struct zd1201 *zd = netdev_priv(dev);
1673        short maxassoc;
1674        int err;
1675
1676        if (!zd->ap)
1677                return -EOPNOTSUPP;
1678
1679        err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1680        if (err)
1681                return err;
1682        rrq->value = maxassoc;
1683        rrq->fixed = 1;
1684
1685        return 0;
1686}
1687
1688static const iw_handler zd1201_private_handler[] = {
1689        (iw_handler) zd1201_set_hostauth,       /* ZD1201SIWHOSTAUTH */
1690        (iw_handler) zd1201_get_hostauth,       /* ZD1201GIWHOSTAUTH */
1691        (iw_handler) zd1201_auth_sta,           /* ZD1201SIWAUTHSTA */
1692        (iw_handler) NULL,                      /* nothing to get */
1693        (iw_handler) zd1201_set_maxassoc,       /* ZD1201SIMAXASSOC */
1694        (iw_handler) zd1201_get_maxassoc,       /* ZD1201GIMAXASSOC */
1695};
1696
1697static const struct iw_priv_args zd1201_private_args[] = {
1698        { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1699            IW_PRIV_TYPE_NONE, "sethostauth" },
1700        { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1701            IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1702        { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1703            IW_PRIV_TYPE_NONE, "authstation" },
1704        { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1705            IW_PRIV_TYPE_NONE, "setmaxassoc" },
1706        { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1707            IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1708};
1709
1710static const struct iw_handler_def zd1201_iw_handlers = {
1711        .num_standard           = ARRAY_SIZE(zd1201_iw_handler),
1712        .num_private            = ARRAY_SIZE(zd1201_private_handler),
1713        .num_private_args       = ARRAY_SIZE(zd1201_private_args),
1714        .standard               = (iw_handler *)zd1201_iw_handler,
1715        .private                = (iw_handler *)zd1201_private_handler,
1716        .private_args           = (struct iw_priv_args *) zd1201_private_args,
1717        .get_wireless_stats     = zd1201_get_wireless_stats,
1718};
1719
1720static const struct net_device_ops zd1201_netdev_ops = {
1721        .ndo_open               = zd1201_net_open,
1722        .ndo_stop               = zd1201_net_stop,
1723        .ndo_start_xmit         = zd1201_hard_start_xmit,
1724        .ndo_tx_timeout         = zd1201_tx_timeout,
1725        .ndo_set_rx_mode        = zd1201_set_multicast,
1726        .ndo_set_mac_address    = zd1201_set_mac_address,
1727        .ndo_change_mtu         = eth_change_mtu,
1728        .ndo_validate_addr      = eth_validate_addr,
1729};
1730
1731static int zd1201_probe(struct usb_interface *interface,
1732                        const struct usb_device_id *id)
1733{
1734        struct zd1201 *zd;
1735        struct net_device *dev;
1736        struct usb_device *usb;
1737        int err;
1738        short porttype;
1739        char buf[IW_ESSID_MAX_SIZE+2];
1740
1741        usb = interface_to_usbdev(interface);
1742
1743        dev = alloc_etherdev(sizeof(*zd));
1744        if (!dev)
1745                return -ENOMEM;
1746        zd = netdev_priv(dev);
1747        zd->dev = dev;
1748
1749        zd->ap = ap;
1750        zd->usb = usb;
1751        zd->removed = 0;
1752        init_waitqueue_head(&zd->rxdataq);
1753        INIT_HLIST_HEAD(&zd->fraglist);
1754        
1755        err = zd1201_fw_upload(usb, zd->ap);
1756        if (err) {
1757                dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
1758                goto err_zd;
1759        }
1760        
1761        zd->endp_in = 1;
1762        zd->endp_out = 1;
1763        zd->endp_out2 = 2;
1764        zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1765        zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1766        if (!zd->rx_urb || !zd->tx_urb) {
1767                err = -ENOMEM;
1768                goto err_zd;
1769        }
1770
1771        mdelay(100);
1772        err = zd1201_drvr_start(zd);
1773        if (err)
1774                goto err_zd;
1775
1776        err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
1777        if (err)
1778                goto err_start;
1779
1780        err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
1781            ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
1782        if (err)
1783                goto err_start;
1784
1785        dev->netdev_ops = &zd1201_netdev_ops;
1786        dev->wireless_handlers = &zd1201_iw_handlers;
1787        dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
1788        strcpy(dev->name, "wlan%d");
1789
1790        err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR, 
1791            dev->dev_addr, dev->addr_len);
1792        if (err)
1793                goto err_start;
1794
1795        /* Set wildcard essid to match zd->essid */
1796        *(__le16 *)buf = cpu_to_le16(0);
1797        err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
1798            IW_ESSID_MAX_SIZE+2, 1);
1799        if (err)
1800                goto err_start;
1801
1802        if (zd->ap)
1803                porttype = ZD1201_PORTTYPE_AP;
1804        else
1805                porttype = ZD1201_PORTTYPE_BSS;
1806        err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1807        if (err)
1808                goto err_start;
1809
1810        SET_NETDEV_DEV(dev, &usb->dev);
1811
1812        err = register_netdev(dev);
1813        if (err)
1814                goto err_start;
1815        dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
1816            dev->name);
1817
1818        usb_set_intfdata(interface, zd);
1819        zd1201_enable(zd);      /* zd1201 likes to startup enabled, */
1820        zd1201_disable(zd);     /* interfering with all the wifis in range */
1821        return 0;
1822
1823err_start:
1824        /* Leave the device in reset state */
1825        zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
1826err_zd:
1827        usb_free_urb(zd->tx_urb);
1828        usb_free_urb(zd->rx_urb);
1829        free_netdev(dev);
1830        return err;
1831}
1832
1833static void zd1201_disconnect(struct usb_interface *interface)
1834{
1835        struct zd1201 *zd = usb_get_intfdata(interface);
1836        struct hlist_node *node2;
1837        struct zd1201_frag *frag;
1838
1839        if (!zd)
1840                return;
1841        usb_set_intfdata(interface, NULL);
1842
1843        hlist_for_each_entry_safe(frag, node2, &zd->fraglist, fnode) {
1844                hlist_del_init(&frag->fnode);
1845                kfree_skb(frag->skb);
1846                kfree(frag);
1847        }
1848
1849        if (zd->tx_urb) {
1850                usb_kill_urb(zd->tx_urb);
1851                usb_free_urb(zd->tx_urb);
1852        }
1853        if (zd->rx_urb) {
1854                usb_kill_urb(zd->rx_urb);
1855                usb_free_urb(zd->rx_urb);
1856        }
1857
1858        if (zd->dev) {
1859                unregister_netdev(zd->dev);
1860                free_netdev(zd->dev);
1861        }
1862}
1863
1864#ifdef CONFIG_PM
1865
1866static int zd1201_suspend(struct usb_interface *interface,
1867                           pm_message_t message)
1868{
1869        struct zd1201 *zd = usb_get_intfdata(interface);
1870
1871        netif_device_detach(zd->dev);
1872
1873        zd->was_enabled = zd->mac_enabled;
1874
1875        if (zd->was_enabled)
1876                return zd1201_disable(zd);
1877        else
1878                return 0;
1879}
1880
1881static int zd1201_resume(struct usb_interface *interface)
1882{
1883        struct zd1201 *zd = usb_get_intfdata(interface);
1884
1885        if (!zd || !zd->dev)
1886                return -ENODEV;
1887
1888        netif_device_attach(zd->dev);
1889
1890        if (zd->was_enabled)
1891                return zd1201_enable(zd);
1892        else
1893                return 0;
1894}
1895
1896#else
1897
1898#define zd1201_suspend NULL
1899#define zd1201_resume  NULL
1900
1901#endif
1902
1903static struct usb_driver zd1201_usb = {
1904        .name = "zd1201",
1905        .probe = zd1201_probe,
1906        .disconnect = zd1201_disconnect,
1907        .id_table = zd1201_table,
1908        .suspend = zd1201_suspend,
1909        .resume = zd1201_resume,
1910        .disable_hub_initiated_lpm = 1,
1911};
1912
1913module_usb_driver(zd1201_usb);
1914