git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/zd1201.c

   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/netdevice.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/wireless.h>
  20 #include <linux/ieee80211.h>
  21 #include <net/iw_handler.h>
  22 #include <linux/string.h>
  23 #include <linux/if_arp.h>
  24 #include <linux/firmware.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>");
  41 MODULE_DESCRIPTION("Driver for ZyDAS ZD1201 based USB Wireless adapters");
  42 MODULE_VERSION(ZD1201_VERSION);
  43 MODULE_LICENSE("GPL");
  44 module_param(ap, int, 0);
  45 MODULE_PARM_DESC(ap, "If non-zero Access Point firmware will be loaded");
  46 MODULE_DEVICE_TABLE(usb, zd1201_table);
  47
  48
  49 static int zd1201_fw_upload(struct usb_device *dev, int apfw)
  50 {
  51         const struct firmware *fw_entry;
  52         const char *data;
  53         unsigned long len;
  54         int err;
  55         unsigned char ret;
  56         char *buf;
  57         char *fwfile;
  58
  59         if (apfw)
  60                 fwfile = "zd1201-ap.fw";
  61         else
  62                 fwfile = "zd1201.fw";
  63
  64         err = request_firmware(&fw_entry, fwfile, &dev->dev);
  65         if (err) {
  66                 dev_err(&dev->dev, "Failed to load %s firmware file!\n", fwfile);
  67                 dev_err(&dev->dev, "Make sure the hotplug firmware loader is installed.\n");
  68                 dev_err(&dev->dev, "Goto http://linux-lc100020.sourceforge.net for more info.\n");
  69                 return err;
  70         }
  71
  72         data = fw_entry->data;
  73         len = fw_entry->size;
  74
  75         buf = kmalloc(1024, GFP_ATOMIC);
  76         if (!buf)
  77                 goto exit;
  78
  79         while (len > 0) {
  80                 int translen = (len > 1024) ? 1024 : len;
  81                 memcpy(buf, data, translen);
  82
  83                 err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0,
  84                     USB_DIR_OUT | 0x40, 0, 0, buf, translen,
  85                     ZD1201_FW_TIMEOUT);
  86                 if (err < 0)
  87                         goto exit;
  88
  89                 len -= translen;
  90                 data += translen;
  91         }
  92
  93         err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0x2,
  94             USB_DIR_OUT | 0x40, 0, 0, NULL, 0, ZD1201_FW_TIMEOUT);
  95         if (err < 0)
  96                 goto exit;
  97
  98         err = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 0x4,
  99             USB_DIR_IN | 0x40, 0,0, &ret, sizeof(ret), ZD1201_FW_TIMEOUT);
 100         if (err < 0)
 101                 goto exit;
 102
 103         if (ret & 0x80) {
 104                 err = -EIO;
 105                 goto exit;
 106         }
 107
 108         err = 0;
 109 exit:
 110         kfree(buf);
 111         release_firmware(fw_entry);
 112         return err;
 113 }
 114
 115 static void zd1201_usbfree(struct urb *urb)
 116 {
 117         struct zd1201 *zd = urb->context;
 118
 119         switch(urb->status) {
 120                 case -EILSEQ:
 121                 case -ENODEV:
 122                 case -ETIME:
 123                 case -ENOENT:
 124                 case -EPIPE:
 125                 case -EOVERFLOW:
 126                 case -ESHUTDOWN:
 127                         dev_warn(&zd->usb->dev, "%s: urb failed: %d\n",
 128                             zd->dev->name, urb->status);
 129         }
 130
 131         kfree(urb->transfer_buffer);
 132         usb_free_urb(urb);
 133         return;
 134 }
 135
 136 /* cmdreq message:
 137         u32 type
 138         u16 cmd
 139         u16 parm0
 140         u16 parm1
 141         u16 parm2
 142         u8  pad[4]
 143
 144         total: 4 + 2 + 2 + 2 + 2 + 4 = 16
 145 */
 146 static int zd1201_docmd(struct zd1201 *zd, int cmd, int parm0,
 147                         int parm1, int parm2)
 148 {
 149         unsigned char *command;
 150         int ret;
 151         struct urb *urb;
 152
 153         command = kmalloc(16, GFP_ATOMIC);
 154         if (!command)
 155                 return -ENOMEM;
 156
 157         *((__le32*)command) = cpu_to_le32(ZD1201_USB_CMDREQ);
 158         *((__le16*)&command[4]) = cpu_to_le16(cmd);
 159         *((__le16*)&command[6]) = cpu_to_le16(parm0);
 160         *((__le16*)&command[8]) = cpu_to_le16(parm1);
 161         *((__le16*)&command[10])= cpu_to_le16(parm2);
 162
 163         urb = usb_alloc_urb(0, GFP_ATOMIC);
 164         if (!urb) {
 165                 kfree(command);
 166                 return -ENOMEM;
 167         }
 168         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 169                           command, 16, zd1201_usbfree, zd);
 170         ret = usb_submit_urb(urb, GFP_ATOMIC);
 171         if (ret) {
 172                 kfree(command);
 173                 usb_free_urb(urb);
 174         }
 175
 176         return ret;
 177 }
 178
 179 /* Callback after sending out a packet */
 180 static void zd1201_usbtx(struct urb *urb)
 181 {
 182         struct zd1201 *zd = urb->context;
 183         netif_wake_queue(zd->dev);
 184         return;
 185 }
 186
 187 /* Incoming data */
 188 static void zd1201_usbrx(struct urb *urb)
 189 {
 190         struct zd1201 *zd = urb->context;
 191         int free = 0;
 192         unsigned char *data = urb->transfer_buffer;
 193         struct sk_buff *skb;
 194         unsigned char type;
 195
 196         if (!zd)
 197                 return;
 198
 199         switch(urb->status) {
 200                 case -EILSEQ:
 201                 case -ENODEV:
 202                 case -ETIME:
 203                 case -ENOENT:
 204                 case -EPIPE:
 205                 case -EOVERFLOW:
 206                 case -ESHUTDOWN:
 207                         dev_warn(&zd->usb->dev, "%s: rx urb failed: %d\n",
 208                             zd->dev->name, urb->status);
 209                         free = 1;
 210                         goto exit;
 211         }
 212
 213         if (urb->status != 0 || urb->actual_length == 0)
 214                 goto resubmit;
 215
 216         type = data[0];
 217         if (type == ZD1201_PACKET_EVENTSTAT || type == ZD1201_PACKET_RESOURCE) {
 218                 memcpy(zd->rxdata, data, urb->actual_length);
 219                 zd->rxlen = urb->actual_length;
 220                 zd->rxdatas = 1;
 221                 wake_up(&zd->rxdataq);
 222         }
 223         /* Info frame */
 224         if (type == ZD1201_PACKET_INQUIRE) {
 225                 int i = 0;
 226                 unsigned short infotype, framelen, copylen;
 227                 framelen = le16_to_cpu(*(__le16*)&data[4]);
 228                 infotype = le16_to_cpu(*(__le16*)&data[6]);
 229
 230                 if (infotype == ZD1201_INF_LINKSTATUS) {
 231                         short linkstatus;
 232
 233                         linkstatus = le16_to_cpu(*(__le16*)&data[8]);
 234                         switch(linkstatus) {
 235                                 case 1:
 236                                         netif_carrier_on(zd->dev);
 237                                         break;
 238                                 case 2:
 239                                         netif_carrier_off(zd->dev);
 240                                         break;
 241                                 case 3:
 242                                         netif_carrier_off(zd->dev);
 243                                         break;
 244                                 case 4:
 245                                         netif_carrier_on(zd->dev);
 246                                         break;
 247                                 default:
 248                                         netif_carrier_off(zd->dev);
 249                         }
 250                         goto resubmit;
 251                 }
 252                 if (infotype == ZD1201_INF_ASSOCSTATUS) {
 253                         short status = le16_to_cpu(*(__le16*)(data+8));
 254                         int event;
 255                         union iwreq_data wrqu;
 256
 257                         switch (status) {
 258                                 case ZD1201_ASSOCSTATUS_STAASSOC:
 259                                 case ZD1201_ASSOCSTATUS_REASSOC:
 260                                         event = IWEVREGISTERED;
 261                                         break;
 262                                 case ZD1201_ASSOCSTATUS_DISASSOC:
 263                                 case ZD1201_ASSOCSTATUS_ASSOCFAIL:
 264                                 case ZD1201_ASSOCSTATUS_AUTHFAIL:
 265                                 default:
 266                                         event = IWEVEXPIRED;
 267                         }
 268                         memcpy(wrqu.addr.sa_data, data+10, ETH_ALEN);
 269                         wrqu.addr.sa_family = ARPHRD_ETHER;
 270
 271                         /* Send event to user space */
 272                         wireless_send_event(zd->dev, event, &wrqu, NULL);
 273
 274                         goto resubmit;
 275                 }
 276                 if (infotype == ZD1201_INF_AUTHREQ) {
 277                         union iwreq_data wrqu;
 278
 279                         memcpy(wrqu.addr.sa_data, data+8, ETH_ALEN);
 280                         wrqu.addr.sa_family = ARPHRD_ETHER;
 281                         /* There isn't a event that trully fits this request.
 282                            We assume that userspace will be smart enough to
 283                            see a new station being expired and sends back a
 284                            authstation ioctl to authorize it. */
 285                         wireless_send_event(zd->dev, IWEVEXPIRED, &wrqu, NULL);
 286                         goto resubmit;
 287                 }
 288                 /* Other infotypes are handled outside this handler */
 289                 zd->rxlen = 0;
 290                 while (i < urb->actual_length) {
 291                         copylen = le16_to_cpu(*(__le16*)&data[i+2]);
 292                         /* Sanity check, sometimes we get junk */
 293                         if (copylen+zd->rxlen > sizeof(zd->rxdata))
 294                                 break;
 295                         memcpy(zd->rxdata+zd->rxlen, data+i+4, copylen);
 296                         zd->rxlen += copylen;
 297                         i += 64;
 298                 }
 299                 if (i >= urb->actual_length) {
 300                         zd->rxdatas = 1;
 301                         wake_up(&zd->rxdataq);
 302                 }
 303                 goto  resubmit;
 304         }
 305         /* Actual data */
 306         if (data[urb->actual_length-1] == ZD1201_PACKET_RXDATA) {
 307                 int datalen = urb->actual_length-1;
 308                 unsigned short len, fc, seq;
 309                 struct hlist_node *node;
 310
 311                 len = ntohs(*(__be16 *)&data[datalen-2]);
 312                 if (len>datalen)
 313                         len=datalen;
 314                 fc = le16_to_cpu(*(__le16 *)&data[datalen-16]);
 315                 seq = le16_to_cpu(*(__le16 *)&data[datalen-24]);
 316
 317                 if (zd->monitor) {
 318                         if (datalen < 24)
 319                                 goto resubmit;
 320                         if (!(skb = dev_alloc_skb(datalen+24)))
 321                                 goto resubmit;
 322
 323                         memcpy(skb_put(skb, 2), &data[datalen-16], 2);
 324                         memcpy(skb_put(skb, 2), &data[datalen-2], 2);
 325                         memcpy(skb_put(skb, 6), &data[datalen-14], 6);
 326                         memcpy(skb_put(skb, 6), &data[datalen-22], 6);
 327                         memcpy(skb_put(skb, 6), &data[datalen-8], 6);
 328                         memcpy(skb_put(skb, 2), &data[datalen-24], 2);
 329                         memcpy(skb_put(skb, len), data, len);
 330                         skb->protocol = eth_type_trans(skb, zd->dev);
 331                         zd->stats.rx_packets++;
 332                         zd->stats.rx_bytes += skb->len;
 333                         netif_rx(skb);
 334                         goto resubmit;
 335                 }
 336
 337                 if ((seq & IEEE80211_SCTL_FRAG) ||
 338                     (fc & IEEE80211_FCTL_MOREFRAGS)) {
 339                         struct zd1201_frag *frag = NULL;
 340                         char *ptr;
 341
 342                         if (datalen<14)
 343                                 goto resubmit;
 344                         if ((seq & IEEE80211_SCTL_FRAG) == 0) {
 345                                 frag = kmalloc(sizeof(*frag), GFP_ATOMIC);
 346                                 if (!frag)
 347                                         goto resubmit;
 348                                 skb = dev_alloc_skb(IEEE80211_MAX_DATA_LEN +14+2);
 349                                 if (!skb) {
 350                                         kfree(frag);
 351                                         goto resubmit;
 352                                 }
 353                                 frag->skb = skb;
 354                                 frag->seq = seq & IEEE80211_SCTL_SEQ;
 355                                 skb_reserve(skb, 2);
 356                                 memcpy(skb_put(skb, 12), &data[datalen-14], 12);
 357                                 memcpy(skb_put(skb, 2), &data[6], 2);
 358                                 memcpy(skb_put(skb, len), data+8, len);
 359                                 hlist_add_head(&frag->fnode, &zd->fraglist);
 360                                 goto resubmit;
 361                         }
 362                         hlist_for_each_entry(frag, node, &zd->fraglist, fnode)
 363                                 if (frag->seq == (seq&IEEE80211_SCTL_SEQ))
 364                                         break;
 365                         if (!frag)
 366                                 goto resubmit;
 367                         skb = frag->skb;
 368                         ptr = skb_put(skb, len);
 369                         if (ptr)
 370                                 memcpy(ptr, data+8, len);
 371                         if (fc & IEEE80211_FCTL_MOREFRAGS)
 372                                 goto resubmit;
 373                         hlist_del_init(&frag->fnode);
 374                         kfree(frag);
 375                 } else {
 376                         if (datalen<14)
 377                                 goto resubmit;
 378                         skb = dev_alloc_skb(len + 14 + 2);
 379                         if (!skb)
 380                                 goto resubmit;
 381                         skb_reserve(skb, 2);
 382                         memcpy(skb_put(skb, 12), &data[datalen-14], 12);
 383                         memcpy(skb_put(skb, 2), &data[6], 2);
 384                         memcpy(skb_put(skb, len), data+8, len);
 385                 }
 386                 skb->protocol = eth_type_trans(skb, zd->dev);
 387                 zd->stats.rx_packets++;
 388                 zd->stats.rx_bytes += skb->len;
 389                 netif_rx(skb);
 390         }
 391 resubmit:
 392         memset(data, 0, ZD1201_RXSIZE);
 393
 394         urb->status = 0;
 395         urb->dev = zd->usb;
 396         if(usb_submit_urb(urb, GFP_ATOMIC))
 397                 free = 1;
 398
 399 exit:
 400         if (free) {
 401                 zd->rxlen = 0;
 402                 zd->rxdatas = 1;
 403                 wake_up(&zd->rxdataq);
 404                 kfree(urb->transfer_buffer);
 405         }
 406         return;
 407 }
 408
 409 static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
 410         unsigned int riddatalen)
 411 {
 412         int err;
 413         int i = 0;
 414         int code;
 415         int rid_fid;
 416         int length;
 417         unsigned char *pdata;
 418
 419         zd->rxdatas = 0;
 420         err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
 421         if (err)
 422                 return err;
 423
 424         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 425         if (!zd->rxlen)
 426                 return -EIO;
 427
 428         code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
 429         rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
 430         length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
 431         if (length > zd->rxlen)
 432                 length = zd->rxlen-6;
 433
 434         /* If access bit is not on, then error */
 435         if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
 436                 return -EINVAL;
 437
 438         /* Not enough buffer for allocating data */
 439         if (riddatalen != (length - 4)) {
 440                 dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
 441                     riddatalen, zd->rxlen, length, rid, rid_fid);
 442                 return -ENODATA;
 443         }
 444
 445         zd->rxdatas = 0;
 446         /* Issue SetRxRid commnd */
 447         err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
 448         if (err)
 449                 return err;
 450
 451         /* Receive RID record from resource packets */
 452         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 453         if (!zd->rxlen)
 454                 return -EIO;
 455
 456         if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
 457                 dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
 458                     zd->rxdata[zd->rxlen-1]);
 459                 return -EINVAL;
 460         }
 461
 462         /* Set the data pointer and received data length */
 463         pdata = zd->rxdata;
 464         length = zd->rxlen;
 465
 466         do {
 467                 int actual_length;
 468
 469                 actual_length = (length > 64) ? 64 : length;
 470
 471                 if (pdata[0] != 0x3) {
 472                         dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
 473                             pdata[0]);
 474                         return -EINVAL;
 475                 }
 476
 477                 if (actual_length != 64) {
 478                         /* Trim the last packet type byte */
 479                         actual_length--;
 480                 }
 481
 482                 /* Skip the 4 bytes header (RID length and RID) */
 483                 if (i == 0) {
 484                         pdata += 8;
 485                         actual_length -= 8;
 486                 } else {
 487                         pdata += 4;
 488                         actual_length -= 4;
 489                 }
 490
 491                 memcpy(riddata, pdata, actual_length);
 492                 riddata += actual_length;
 493                 pdata += actual_length;
 494                 length -= 64;
 495                 i++;
 496         } while (length > 0);
 497
 498         return 0;
 499 }
 500
 501 /*
 502  *      resreq:
 503  *              byte    type
 504  *              byte    sequence
 505  *              u16     reserved
 506  *              byte    data[12]
 507  *      total: 16
 508  */
 509 static int zd1201_setconfig(struct zd1201 *zd, int rid, void *buf, int len, int wait)
 510 {
 511         int err;
 512         unsigned char *request;
 513         int reqlen;
 514         char seq=0;
 515         struct urb *urb;
 516         gfp_t gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
 517
 518         len += 4;                       /* first 4 are for header */
 519
 520         zd->rxdatas = 0;
 521         zd->rxlen = 0;
 522         for (seq=0; len > 0; seq++) {
 523                 request = kmalloc(16, gfp_mask);
 524                 if (!request)
 525                         return -ENOMEM;
 526                 urb = usb_alloc_urb(0, gfp_mask);
 527                 if (!urb) {
 528                         kfree(request);
 529                         return -ENOMEM;
 530                 }
 531                 memset(request, 0, 16);
 532                 reqlen = len>12 ? 12 : len;
 533                 request[0] = ZD1201_USB_RESREQ;
 534                 request[1] = seq;
 535                 request[2] = 0;
 536                 request[3] = 0;
 537                 if (request[1] == 0) {
 538                         /* add header */
 539                         *(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
 540                         *(__le16*)&request[6] = cpu_to_le16(rid);
 541                         memcpy(request+8, buf, reqlen-4);
 542                         buf += reqlen-4;
 543                 } else {
 544                         memcpy(request+4, buf, reqlen);
 545                         buf += reqlen;
 546                 }
 547
 548                 len -= reqlen;
 549
 550                 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
 551                     zd->endp_out2), request, 16, zd1201_usbfree, zd);
 552                 err = usb_submit_urb(urb, gfp_mask);
 553                 if (err)
 554                         goto err;
 555         }
 556
 557         request = kmalloc(16, gfp_mask);
 558         if (!request)
 559                 return -ENOMEM;
 560         urb = usb_alloc_urb(0, gfp_mask);
 561         if (!urb) {
 562                 kfree(request);
 563                 return -ENOMEM;
 564         }
 565         *((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
 566         *((__le16*)&request[4]) =
 567             cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
 568         *((__le16*)&request[6]) = cpu_to_le16(rid);
 569         *((__le16*)&request[8]) = cpu_to_le16(0);
 570         *((__le16*)&request[10]) = cpu_to_le16(0);
 571         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 572              request, 16, zd1201_usbfree, zd);
 573         err = usb_submit_urb(urb, gfp_mask);
 574         if (err)
 575                 goto err;
 576
 577         if (wait) {
 578                 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 579                 if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
 580                         dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
 581                 }
 582         }
 583
 584         return 0;
 585 err:
 586         kfree(request);
 587         usb_free_urb(urb);
 588         return err;
 589 }
 590
 591 static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
 592 {
 593         int err;
 594         __le16 zdval;
 595
 596         err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
 597         if (err)
 598                 return err;
 599         *val = le16_to_cpu(zdval);
 600         return 0;
 601 }
 602
 603 static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
 604 {
 605         __le16 zdval = cpu_to_le16(val);
 606         return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
 607 }
 608
 609 static int zd1201_drvr_start(struct zd1201 *zd)
 610 {
 611         int err, i;
 612         short max;
 613         __le16 zdmax;
 614         unsigned char *buffer;
 615
 616         buffer = kzalloc(ZD1201_RXSIZE, GFP_KERNEL);
 617         if (!buffer)
 618                 return -ENOMEM;
 619
 620         usb_fill_bulk_urb(zd->rx_urb, zd->usb,
 621             usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
 622             zd1201_usbrx, zd);
 623
 624         err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
 625         if (err)
 626                 goto err_buffer;
 627
 628         err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
 629         if (err)
 630                 goto err_urb;
 631
 632         err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
 633             sizeof(__le16));
 634         if (err)
 635                 goto err_urb;
 636
 637         max = le16_to_cpu(zdmax);
 638         for (i=0; i<max; i++) {
 639                 err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
 640                 if (err)
 641                         goto err_urb;
 642         }
 643
 644         return 0;
 645
 646 err_urb:
 647         usb_kill_urb(zd->rx_urb);
 648         return err;
 649 err_buffer:
 650         kfree(buffer);
 651         return err;
 652 }
 653
 654 /*      Magic alert: The firmware doesn't seem to like the MAC state being
 655  *      toggled in promisc (aka monitor) mode.
 656  *      (It works a number of times, but will halt eventually)
 657  *      So we turn it of before disabling and on after enabling if needed.
 658  */
 659 static int zd1201_enable(struct zd1201 *zd)
 660 {
 661         int err;
 662
 663         if (zd->mac_enabled)
 664                 return 0;
 665
 666         err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
 667         if (!err)
 668                 zd->mac_enabled = 1;
 669
 670         if (zd->monitor)
 671                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
 672
 673         return err;
 674 }
 675
 676 static int zd1201_disable(struct zd1201 *zd)
 677 {
 678         int err;
 679
 680         if (!zd->mac_enabled)
 681                 return 0;
 682         if (zd->monitor) {
 683                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 684                 if (err)
 685                         return err;
 686         }
 687
 688         err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
 689         if (!err)
 690                 zd->mac_enabled = 0;
 691         return err;
 692 }
 693
 694 static int zd1201_mac_reset(struct zd1201 *zd)
 695 {
 696         if (!zd->mac_enabled)
 697                 return 0;
 698         zd1201_disable(zd);
 699         return zd1201_enable(zd);
 700 }
 701
 702 static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
 703 {
 704         int err, val;
 705         char buf[IW_ESSID_MAX_SIZE+2];
 706
 707         err = zd1201_disable(zd);
 708         if (err)
 709                 return err;
 710
 711         val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
 712         val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
 713         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
 714         if (err)
 715                 return err;
 716
 717         *(__le16 *)buf = cpu_to_le16(essidlen);
 718         memcpy(buf+2, essid, essidlen);
 719         if (!zd->ap) {  /* Normal station */
 720                 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
 721                     IW_ESSID_MAX_SIZE+2, 1);
 722                 if (err)
 723                         return err;
 724         } else {        /* AP */
 725                 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
 726                     IW_ESSID_MAX_SIZE+2, 1);
 727                 if (err)
 728                         return err;
 729         }
 730
 731         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 732             zd->dev->dev_addr, zd->dev->addr_len, 1);
 733         if (err)
 734                 return err;
 735
 736         err = zd1201_enable(zd);
 737         if (err)
 738                 return err;
 739
 740         msleep(100);
 741         return 0;
 742 }
 743
 744 static int zd1201_net_open(struct net_device *dev)
 745 {
 746         struct zd1201 *zd = netdev_priv(dev);
 747
 748         /* Start MAC with wildcard if no essid set */
 749         if (!zd->mac_enabled)
 750                 zd1201_join(zd, zd->essid, zd->essidlen);
 751         netif_start_queue(dev);
 752
 753         return 0;
 754 }
 755
 756 static int zd1201_net_stop(struct net_device *dev)
 757 {
 758         netif_stop_queue(dev);
 759         return 0;
 760 }
 761
 762 /*
 763         RFC 1042 encapsulates Ethernet frames in 802.11 frames
 764         by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
 765         (0x00, 0x00, 0x00). Zd requires an additional padding, copy
 766         of ethernet addresses, length of the standard RFC 1042 packet
 767         and a command byte (which is nul for tx).
 768
 769         tx frame (from Wlan NG):
 770         RFC 1042:
 771                 llc             0xAA 0xAA 0x03 (802.2 LLC)
 772                 snap            0x00 0x00 0x00 (Ethernet encapsulated)
 773                 type            2 bytes, Ethernet type field
 774                 payload         (minus eth header)
 775         Zydas specific:
 776                 padding         1B if (skb->len+8+1)%64==0
 777                 Eth MAC addr    12 bytes, Ethernet MAC addresses
 778                 length          2 bytes, RFC 1042 packet length
 779                                 (llc+snap+type+payload)
 780                 zd              1 null byte, zd1201 packet type
 781  */
 782 static int zd1201_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 783 {
 784         struct zd1201 *zd = netdev_priv(dev);
 785         unsigned char *txbuf = zd->txdata;
 786         int txbuflen, pad = 0, err;
 787         struct urb *urb = zd->tx_urb;
 788
 789         if (!zd->mac_enabled || zd->monitor) {
 790                 zd->stats.tx_dropped++;
 791                 kfree_skb(skb);
 792                 return 0;
 793         }
 794         netif_stop_queue(dev);
 795
 796         txbuflen = skb->len + 8 + 1;
 797         if (txbuflen%64 == 0) {
 798                 pad = 1;
 799                 txbuflen++;
 800         }
 801         txbuf[0] = 0xAA;
 802         txbuf[1] = 0xAA;
 803         txbuf[2] = 0x03;
 804         txbuf[3] = 0x00;        /* rfc1042 */
 805         txbuf[4] = 0x00;
 806         txbuf[5] = 0x00;
 807
 808         skb_copy_from_linear_data_offset(skb, 12, txbuf + 6, skb->len - 12);
 809         if (pad)
 810                 txbuf[skb->len-12+6]=0;
 811         skb_copy_from_linear_data(skb, txbuf + skb->len - 12 + 6 + pad, 12);
 812         *(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
 813         txbuf[txbuflen-1] = 0;
 814
 815         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
 816             txbuf, txbuflen, zd1201_usbtx, zd);
 817
 818         err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
 819         if (err) {
 820                 zd->stats.tx_errors++;
 821                 netif_start_queue(dev);
 822                 return err;
 823         }
 824         zd->stats.tx_packets++;
 825         zd->stats.tx_bytes += skb->len;
 826         dev->trans_start = jiffies;
 827         kfree_skb(skb);
 828
 829         return 0;
 830 }
 831
 832 static void zd1201_tx_timeout(struct net_device *dev)
 833 {
 834         struct zd1201 *zd = netdev_priv(dev);
 835
 836         if (!zd)
 837                 return;
 838         dev_warn(&zd->usb->dev, "%s: TX timeout, shooting down urb\n",
 839             dev->name);
 840         usb_unlink_urb(zd->tx_urb);
 841         zd->stats.tx_errors++;
 842         /* Restart the timeout to quiet the watchdog: */
 843         dev->trans_start = jiffies;
 844 }
 845
 846 static int zd1201_set_mac_address(struct net_device *dev, void *p)
 847 {
 848         struct sockaddr *addr = p;
 849         struct zd1201 *zd = netdev_priv(dev);
 850         int err;
 851
 852         if (!zd)
 853                 return -ENODEV;
 854
 855         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 856             addr->sa_data, dev->addr_len, 1);
 857         if (err)
 858                 return err;
 859         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
 860
 861         return zd1201_mac_reset(zd);
 862 }
 863
 864 static struct net_device_stats *zd1201_get_stats(struct net_device *dev)
 865 {
 866         struct zd1201 *zd = netdev_priv(dev);
 867
 868         return &zd->stats;
 869 }
 870
 871 static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
 872 {
 873         struct zd1201 *zd = netdev_priv(dev);
 874
 875         return &zd->iwstats;
 876 }
 877
 878 static void zd1201_set_multicast(struct net_device *dev)
 879 {
 880         struct zd1201 *zd = netdev_priv(dev);
 881         struct dev_mc_list *mc = dev->mc_list;
 882         unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
 883         int i;
 884
 885         if (dev->mc_count > ZD1201_MAXMULTI)
 886                 return;
 887
 888         for (i=0; i<dev->mc_count; i++) {
 889                 memcpy(reqbuf+i*ETH_ALEN, mc->dmi_addr, ETH_ALEN);
 890                 mc = mc->next;
 891         }
 892         zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
 893             dev->mc_count*ETH_ALEN, 0);
 894
 895 }
 896
 897 static int zd1201_config_commit(struct net_device *dev,
 898     struct iw_request_info *info, struct iw_point *data, char *essid)
 899 {
 900         struct zd1201 *zd = netdev_priv(dev);
 901
 902         return zd1201_mac_reset(zd);
 903 }
 904
 905 static int zd1201_get_name(struct net_device *dev,
 906     struct iw_request_info *info, char *name, char *extra)
 907 {
 908         strcpy(name, "IEEE 802.11b");
 909         return 0;
 910 }
 911
 912 static int zd1201_set_freq(struct net_device *dev,
 913     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 914 {
 915         struct zd1201 *zd = netdev_priv(dev);
 916         short channel = 0;
 917         int err;
 918
 919         if (freq->e == 0)
 920                 channel = freq->m;
 921         else {
 922                 if (freq->m >= 2482)
 923                         channel = 14;
 924                 if (freq->m >= 2407)
 925                         channel = (freq->m-2407)/5;
 926         }
 927
 928         err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
 929         if (err)
 930                 return err;
 931
 932         zd1201_mac_reset(zd);
 933
 934         return 0;
 935 }
 936
 937 static int zd1201_get_freq(struct net_device *dev,
 938     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 939 {
 940         struct zd1201 *zd = netdev_priv(dev);
 941         short channel;
 942         int err;
 943
 944         err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
 945         if (err)
 946                 return err;
 947         freq->e = 0;
 948         freq->m = channel;
 949
 950         return 0;
 951 }
 952
 953 static int zd1201_set_mode(struct net_device *dev,
 954     struct iw_request_info *info, __u32 *mode, char *extra)
 955 {
 956         struct zd1201 *zd = netdev_priv(dev);
 957         short porttype, monitor = 0;
 958         unsigned char buffer[IW_ESSID_MAX_SIZE+2];
 959         int err;
 960
 961         if (zd->ap) {
 962                 if (*mode != IW_MODE_MASTER)
 963                         return -EINVAL;
 964                 return 0;
 965         }
 966
 967         err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 968         if (err)
 969                 return err;
 970         zd->dev->type = ARPHRD_ETHER;
 971         switch(*mode) {
 972                 case IW_MODE_MONITOR:
 973                         monitor = 1;
 974                         zd->dev->type = ARPHRD_IEEE80211;
 975                         /* Make sure we are no longer associated with by
 976                            setting an 'impossible' essid.
 977                            (otherwise we mess up firmware)
 978                          */
 979                         zd1201_join(zd, "\0-*#\0", 5);
 980                         /* Put port in pIBSS */
 981                 case 8: /* No pseudo-IBSS in wireless extensions (yet) */
 982                         porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
 983                         break;
 984                 case IW_MODE_ADHOC:
 985                         porttype = ZD1201_PORTTYPE_IBSS;
 986                         break;
 987                 case IW_MODE_INFRA:
 988                         porttype = ZD1201_PORTTYPE_BSS;
 989                         break;
 990                 default:
 991                         return -EINVAL;
 992         }
 993
 994         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
 995         if (err)
 996                 return err;
 997         if (zd->monitor && !monitor) {
 998                         zd1201_disable(zd);
 999                         *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
1000                         memcpy(buffer+2, zd->essid, zd->essidlen);
1001                         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
1002                             buffer, IW_ESSID_MAX_SIZE+2, 1);
1003                         if (err)
1004                                 return err;
1005         }
1006         zd->monitor = monitor;
1007         /* If monitor mode is set we don't actually turn it on here since it
1008          * is done during mac reset anyway (see zd1201_mac_enable).
1009          */
1010         zd1201_mac_reset(zd);
1011
1012         return 0;
1013 }
1014
1015 static int zd1201_get_mode(struct net_device *dev,
1016     struct iw_request_info *info, __u32 *mode, char *extra)
1017 {
1018         struct zd1201 *zd = netdev_priv(dev);
1019         short porttype;
1020         int err;
1021
1022         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1023         if (err)
1024                 return err;
1025         switch(porttype) {
1026                 case ZD1201_PORTTYPE_IBSS:
1027                         *mode = IW_MODE_ADHOC;
1028                         break;
1029                 case ZD1201_PORTTYPE_BSS:
1030                         *mode = IW_MODE_INFRA;
1031                         break;
1032                 case ZD1201_PORTTYPE_WDS:
1033                         *mode = IW_MODE_REPEAT;
1034                         break;
1035                 case ZD1201_PORTTYPE_PSEUDOIBSS:
1036                         *mode = 8;/* No Pseudo-IBSS... */
1037                         break;
1038                 case ZD1201_PORTTYPE_AP:
1039                         *mode = IW_MODE_MASTER;
1040                         break;
1041                 default:
1042                         dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1043                             porttype);
1044                         *mode = IW_MODE_AUTO;
1045         }
1046         if (zd->monitor)
1047                 *mode = IW_MODE_MONITOR;
1048
1049         return 0;
1050 }
1051
1052 static int zd1201_get_range(struct net_device *dev,
1053     struct iw_request_info *info, struct iw_point *wrq, char *extra)
1054 {
1055         struct iw_range *range = (struct iw_range *)extra;
1056
1057         wrq->length = sizeof(struct iw_range);
1058         memset(range, 0, sizeof(struct iw_range));
1059         range->we_version_compiled = WIRELESS_EXT;
1060         range->we_version_source = WIRELESS_EXT;
1061
1062         range->max_qual.qual = 128;
1063         range->max_qual.level = 128;
1064         range->max_qual.noise = 128;
1065         range->max_qual.updated = 7;
1066
1067         range->encoding_size[0] = 5;
1068         range->encoding_size[1] = 13;
1069         range->num_encoding_sizes = 2;
1070         range->max_encoding_tokens = ZD1201_NUMKEYS;
1071
1072         range->num_bitrates = 4;
1073         range->bitrate[0] = 1000000;
1074         range->bitrate[1] = 2000000;
1075         range->bitrate[2] = 5500000;
1076         range->bitrate[3] = 11000000;
1077
1078         range->min_rts = 0;
1079         range->min_frag = ZD1201_FRAGMIN;
1080         range->max_rts = ZD1201_RTSMAX;
1081         range->min_frag = ZD1201_FRAGMAX;
1082
1083         return 0;
1084 }
1085
1086 /*      Little bit of magic here: we only get the quality if we poll
1087  *      for it, and we never get an actual request to trigger such
1088  *      a poll. Therefore we 'assume' that the user will soon ask for
1089  *      the stats after asking the bssid.
1090  */
1091 static int zd1201_get_wap(struct net_device *dev,
1092     struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1093 {
1094         struct zd1201 *zd = netdev_priv(dev);
1095         unsigned char buffer[6];
1096
1097         if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1098                 /* Unfortunately the quality and noise reported is useless.
1099                    they seem to be accumulators that increase until you
1100                    read them, unless we poll on a fixed interval we can't
1101                    use them
1102                  */
1103                 /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1104                 zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1105                 /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1106                 zd->iwstats.qual.updated = 2;
1107         }
1108
1109         return zd1201_getconfig(zd, ZD1201_RID_CURRENTBSSID, ap_addr->sa_data, 6);
1110 }
1111
1112 static int zd1201_set_scan(struct net_device *dev,
1113     struct iw_request_info *info, struct iw_point *srq, char *extra)
1114 {
1115         /* We do everything in get_scan */
1116         return 0;
1117 }
1118
1119 static int zd1201_get_scan(struct net_device *dev,
1120     struct iw_request_info *info, struct iw_point *srq, char *extra)
1121 {
1122         struct zd1201 *zd = netdev_priv(dev);
1123         int err, i, j, enabled_save;
1124         struct iw_event iwe;
1125         char *cev = extra;
1126         char *end_buf = extra + IW_SCAN_MAX_DATA;
1127
1128         /* No scanning in AP mode */
1129         if (zd->ap)
1130                 return -EOPNOTSUPP;
1131
1132         /* Scan doesn't seem to work if disabled */
1133         enabled_save = zd->mac_enabled;
1134         zd1201_enable(zd);
1135
1136         zd->rxdatas = 0;
1137         err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE,
1138              ZD1201_INQ_SCANRESULTS, 0, 0);
1139         if (err)
1140                 return err;
1141
1142         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1143         if (!zd->rxlen)
1144                 return -EIO;
1145
1146         if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1147                 return -EIO;
1148
1149         for(i=8; i<zd->rxlen; i+=62) {
1150                 iwe.cmd = SIOCGIWAP;
1151                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1152                 memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1153                 cev = iwe_stream_add_event(info, cev, end_buf,
1154                                            &iwe, IW_EV_ADDR_LEN);
1155
1156                 iwe.cmd = SIOCGIWESSID;
1157                 iwe.u.data.length = zd->rxdata[i+16];
1158                 iwe.u.data.flags = 1;
1159                 cev = iwe_stream_add_point(info, cev, end_buf,
1160                                            &iwe, zd->rxdata+i+18);
1161
1162                 iwe.cmd = SIOCGIWMODE;
1163                 if (zd->rxdata[i+14]&0x01)
1164                         iwe.u.mode = IW_MODE_MASTER;
1165                 else
1166                         iwe.u.mode = IW_MODE_ADHOC;
1167                 cev = iwe_stream_add_event(info, cev, end_buf,
1168                                            &iwe, IW_EV_UINT_LEN);
1169
1170                 iwe.cmd = SIOCGIWFREQ;
1171                 iwe.u.freq.m = zd->rxdata[i+0];
1172                 iwe.u.freq.e = 0;
1173                 cev = iwe_stream_add_event(info, cev, end_buf,
1174                                            &iwe, IW_EV_FREQ_LEN);
1175
1176                 iwe.cmd = SIOCGIWRATE;
1177                 iwe.u.bitrate.fixed = 0;
1178                 iwe.u.bitrate.disabled = 0;
1179                 for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
1180                         iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
1181                         cev = iwe_stream_add_event(info, cev, end_buf,
1182                                                    &iwe, IW_EV_PARAM_LEN);
1183                 }
1184
1185                 iwe.cmd = SIOCGIWENCODE;
1186                 iwe.u.data.length = 0;
1187                 if (zd->rxdata[i+14]&0x10)
1188                         iwe.u.data.flags = IW_ENCODE_ENABLED;
1189                 else
1190                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1191                 cev = iwe_stream_add_point(info, cev, end_buf, &iwe, NULL);
1192
1193                 iwe.cmd = IWEVQUAL;
1194                 iwe.u.qual.qual = zd->rxdata[i+4];
1195                 iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
1196                 iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
1197                 iwe.u.qual.updated = 7;
1198                 cev = iwe_stream_add_event(info, cev, end_buf,
1199                                            &iwe, IW_EV_QUAL_LEN);
1200         }
1201
1202         if (!enabled_save)
1203                 zd1201_disable(zd);
1204
1205         srq->length = cev - extra;
1206         srq->flags = 0;
1207
1208         return 0;
1209 }
1210
1211 static int zd1201_set_essid(struct net_device *dev,
1212     struct iw_request_info *info, struct iw_point *data, char *essid)
1213 {
1214         struct zd1201 *zd = netdev_priv(dev);
1215
1216         if (data->length > IW_ESSID_MAX_SIZE)
1217                 return -EINVAL;
1218         if (data->length < 1)
1219                 data->length = 1;
1220         zd->essidlen = data->length;
1221         memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1222         memcpy(zd->essid, essid, data->length);
1223         return zd1201_join(zd, zd->essid, zd->essidlen);
1224 }
1225
1226 static int zd1201_get_essid(struct net_device *dev,
1227     struct iw_request_info *info, struct iw_point *data, char *essid)
1228 {
1229         struct zd1201 *zd = netdev_priv(dev);
1230
1231         memcpy(essid, zd->essid, zd->essidlen);
1232         data->flags = 1;
1233         data->length = zd->essidlen;
1234
1235         return 0;
1236 }
1237
1238 static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1239     struct iw_point *data, char *nick)
1240 {
1241         strcpy(nick, "zd1201");
1242         data->flags = 1;
1243         data->length = strlen(nick);
1244         return 0;
1245 }
1246
1247 static int zd1201_set_rate(struct net_device *dev,
1248     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1249 {
1250         struct zd1201 *zd = netdev_priv(dev);
1251         short rate;
1252         int err;
1253
1254         switch (rrq->value) {
1255                 case 1000000:
1256                         rate = ZD1201_RATEB1;
1257                         break;
1258                 case 2000000:
1259                         rate = ZD1201_RATEB2;
1260                         break;
1261                 case 5500000:
1262                         rate = ZD1201_RATEB5;
1263                         break;
1264                 case 11000000:
1265                 default:
1266                         rate = ZD1201_RATEB11;
1267                         break;
1268         }
1269         if (!rrq->fixed) { /* Also enable all lower bitrates */
1270                 rate |= rate-1;
1271         }
1272
1273         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1274         if (err)
1275                 return err;
1276
1277         return zd1201_mac_reset(zd);
1278 }
1279
1280 static int zd1201_get_rate(struct net_device *dev,
1281     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1282 {
1283         struct zd1201 *zd = netdev_priv(dev);
1284         short rate;
1285         int err;
1286
1287         err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1288         if (err)
1289                 return err;
1290
1291         switch(rate) {
1292                 case 1:
1293                         rrq->value = 1000000;
1294                         break;
1295                 case 2:
1296                         rrq->value = 2000000;
1297                         break;
1298                 case 5:
1299                         rrq->value = 5500000;
1300                         break;
1301                 case 11:
1302                         rrq->value = 11000000;
1303                         break;
1304                 default:
1305                         rrq->value = 0;
1306         }
1307         rrq->fixed = 0;
1308         rrq->disabled = 0;
1309
1310         return 0;
1311 }
1312
1313 static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1314     struct iw_param *rts, char *extra)
1315 {
1316         struct zd1201 *zd = netdev_priv(dev);
1317         int err;
1318         short val = rts->value;
1319
1320         if (rts->disabled || !rts->fixed)
1321                 val = ZD1201_RTSMAX;
1322         if (val > ZD1201_RTSMAX)
1323                 return -EINVAL;
1324         if (val < 0)
1325                 return -EINVAL;
1326
1327         err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1328         if (err)
1329                 return err;
1330         return zd1201_mac_reset(zd);
1331 }
1332
1333 static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1334     struct iw_param *rts, char *extra)
1335 {
1336         struct zd1201 *zd = netdev_priv(dev);
1337         short rtst;
1338         int err;
1339
1340         err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1341         if (err)
1342                 return err;
1343         rts->value = rtst;
1344         rts->disabled = (rts->value == ZD1201_RTSMAX);
1345         rts->fixed = 1;
1346
1347         return 0;
1348 }
1349
1350 static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1351     struct iw_param *frag, char *extra)
1352 {
1353         struct zd1201 *zd = netdev_priv(dev);
1354         int err;
1355         short val = frag->value;
1356
1357         if (frag->disabled || !frag->fixed)
1358                 val = ZD1201_FRAGMAX;
1359         if (val > ZD1201_FRAGMAX)
1360                 return -EINVAL;
1361         if (val < ZD1201_FRAGMIN)
1362                 return -EINVAL;
1363         if (val & 1)
1364                 return -EINVAL;
1365         err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1366         if (err)
1367                 return err;
1368         return zd1201_mac_reset(zd);
1369 }
1370
1371 static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1372     struct iw_param *frag, char *extra)
1373 {
1374         struct zd1201 *zd = netdev_priv(dev);
1375         short fragt;
1376         int err;
1377
1378         err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1379         if (err)
1380                 return err;
1381         frag->value = fragt;
1382         frag->disabled = (frag->value == ZD1201_FRAGMAX);
1383         frag->fixed = 1;
1384
1385         return 0;
1386 }
1387
1388 static int zd1201_set_retry(struct net_device *dev,
1389     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1390 {
1391         return 0;
1392 }
1393
1394 static int zd1201_get_retry(struct net_device *dev,
1395     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1396 {
1397         return 0;
1398 }
1399
1400 static int zd1201_set_encode(struct net_device *dev,
1401     struct iw_request_info *info, struct iw_point *erq, char *key)
1402 {
1403         struct zd1201 *zd = netdev_priv(dev);
1404         short i;
1405         int err, rid;
1406
1407         if (erq->length > ZD1201_MAXKEYLEN)
1408                 return -EINVAL;
1409
1410         i = (erq->flags & IW_ENCODE_INDEX)-1;
1411         if (i == -1) {
1412                 err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1413                 if (err)
1414                         return err;
1415         } else {
1416                 err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1417                 if (err)
1418                         return err;
1419         }
1420
1421         if (i < 0 || i >= ZD1201_NUMKEYS)
1422                 return -EINVAL;
1423
1424         rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1425         err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1426         if (err)
1427                 return err;
1428         zd->encode_keylen[i] = erq->length;
1429         memcpy(zd->encode_keys[i], key, erq->length);
1430
1431         i=0;
1432         if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1433                 i |= 0x01;
1434                 zd->encode_enabled = 1;
1435         } else
1436                 zd->encode_enabled = 0;
1437         if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1438                 i |= 0x02;
1439                 zd->encode_restricted = 1;
1440         } else
1441                 zd->encode_restricted = 0;
1442         err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1443         if (err)
1444                 return err;
1445
1446         if (zd->encode_enabled)
1447                 i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1448         else
1449                 i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1450         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1451         if (err)
1452                 return err;
1453
1454         return zd1201_mac_reset(zd);
1455 }
1456
1457 static int zd1201_get_encode(struct net_device *dev,
1458     struct iw_request_info *info, struct iw_point *erq, char *key)
1459 {
1460         struct zd1201 *zd = netdev_priv(dev);
1461         short i;
1462         int err;
1463
1464         if (zd->encode_enabled)
1465                 erq->flags = IW_ENCODE_ENABLED;
1466         else
1467                 erq->flags = IW_ENCODE_DISABLED;
1468         if (zd->encode_restricted)
1469                 erq->flags |= IW_ENCODE_RESTRICTED;
1470         else
1471                 erq->flags |= IW_ENCODE_OPEN;
1472
1473         i = (erq->flags & IW_ENCODE_INDEX) -1;
1474         if (i == -1) {
1475                 err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1476                 if (err)
1477                         return err;
1478         }
1479         if (i<0 || i>= ZD1201_NUMKEYS)
1480                 return -EINVAL;
1481
1482         erq->flags |= i+1;
1483
1484         erq->length = zd->encode_keylen[i];
1485         memcpy(key, zd->encode_keys[i], erq->length);
1486
1487         return 0;
1488 }
1489
1490 static int zd1201_set_power(struct net_device *dev,
1491     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1492 {
1493         struct zd1201 *zd = netdev_priv(dev);
1494         short enabled, duration, level;
1495         int err;
1496
1497         enabled = vwrq->disabled ? 0 : 1;
1498         if (enabled) {
1499                 if (vwrq->flags & IW_POWER_PERIOD) {
1500                         duration = vwrq->value;
1501                         err = zd1201_setconfig16(zd,
1502                             ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1503                         if (err)
1504                                 return err;
1505                         goto out;
1506                 }
1507                 if (vwrq->flags & IW_POWER_TIMEOUT) {
1508                         err = zd1201_getconfig16(zd,
1509                             ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1510                         if (err)
1511                                 return err;
1512                         level = vwrq->value * 4 / duration;
1513                         if (level > 4)
1514                                 level = 4;
1515                         if (level < 0)
1516                                 level = 0;
1517                         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1518                             level);
1519                         if (err)
1520                                 return err;
1521                         goto out;
1522                 }
1523                 return -EINVAL;
1524         }
1525 out:
1526         return zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1527 }
1528
1529 static int zd1201_get_power(struct net_device *dev,
1530     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1531 {
1532         struct zd1201 *zd = netdev_priv(dev);
1533         short enabled, level, duration;
1534         int err;
1535
1536         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1537         if (err)
1538                 return err;
1539         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1540         if (err)
1541                 return err;
1542         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1543         if (err)
1544                 return err;
1545         vwrq->disabled = enabled ? 0 : 1;
1546         if (vwrq->flags & IW_POWER_TYPE) {
1547                 if (vwrq->flags & IW_POWER_PERIOD) {
1548                         vwrq->value = duration;
1549                         vwrq->flags = IW_POWER_PERIOD;
1550                 } else {
1551                         vwrq->value = duration * level / 4;
1552                         vwrq->flags = IW_POWER_TIMEOUT;
1553                 }
1554         }
1555         if (vwrq->flags & IW_POWER_MODE) {
1556                 if (enabled && level)
1557                         vwrq->flags = IW_POWER_UNICAST_R;
1558                 else
1559                         vwrq->flags = IW_POWER_ALL_R;
1560         }
1561
1562         return 0;
1563 }
1564
1565
1566 static const iw_handler zd1201_iw_handler[] =
1567 {
1568         (iw_handler) zd1201_config_commit,      /* SIOCSIWCOMMIT */
1569         (iw_handler) zd1201_get_name,           /* SIOCGIWNAME */
1570         (iw_handler) NULL,                      /* SIOCSIWNWID */
1571         (iw_handler) NULL,                      /* SIOCGIWNWID */
1572         (iw_handler) zd1201_set_freq,           /* SIOCSIWFREQ */
1573         (iw_handler) zd1201_get_freq,           /* SIOCGIWFREQ */
1574         (iw_handler) zd1201_set_mode,           /* SIOCSIWMODE */
1575         (iw_handler) zd1201_get_mode,           /* SIOCGIWMODE */
1576         (iw_handler) NULL,                      /* SIOCSIWSENS */
1577         (iw_handler) NULL,                      /* SIOCGIWSENS */
1578         (iw_handler) NULL,                      /* SIOCSIWRANGE */
1579         (iw_handler) zd1201_get_range,           /* SIOCGIWRANGE */
1580         (iw_handler) NULL,                      /* SIOCSIWPRIV */
1581         (iw_handler) NULL,                      /* SIOCGIWPRIV */
1582         (iw_handler) NULL,                      /* SIOCSIWSTATS */
1583         (iw_handler) NULL,                      /* SIOCGIWSTATS */
1584         (iw_handler) NULL,                      /* SIOCSIWSPY */
1585         (iw_handler) NULL,                      /* SIOCGIWSPY */
1586         (iw_handler) NULL,                      /* -- hole -- */
1587         (iw_handler) NULL,                      /* -- hole -- */
1588         (iw_handler) NULL/*zd1201_set_wap*/,            /* SIOCSIWAP */
1589         (iw_handler) zd1201_get_wap,            /* SIOCGIWAP */
1590         (iw_handler) NULL,                      /* -- hole -- */
1591         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
1592         (iw_handler) zd1201_set_scan,           /* SIOCSIWSCAN */
1593         (iw_handler) zd1201_get_scan,           /* SIOCGIWSCAN */
1594         (iw_handler) zd1201_set_essid,          /* SIOCSIWESSID */
1595         (iw_handler) zd1201_get_essid,          /* SIOCGIWESSID */
1596         (iw_handler) NULL,                      /* SIOCSIWNICKN */
1597         (iw_handler) zd1201_get_nick,           /* SIOCGIWNICKN */
1598         (iw_handler) NULL,                      /* -- hole -- */
1599         (iw_handler) NULL,                      /* -- hole -- */
1600         (iw_handler) zd1201_set_rate,           /* SIOCSIWRATE */
1601         (iw_handler) zd1201_get_rate,           /* SIOCGIWRATE */
1602         (iw_handler) zd1201_set_rts,            /* SIOCSIWRTS */
1603         (iw_handler) zd1201_get_rts,            /* SIOCGIWRTS */
1604         (iw_handler) zd1201_set_frag,           /* SIOCSIWFRAG */
1605         (iw_handler) zd1201_get_frag,           /* SIOCGIWFRAG */
1606         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
1607         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
1608         (iw_handler) zd1201_set_retry,          /* SIOCSIWRETRY */
1609         (iw_handler) zd1201_get_retry,          /* SIOCGIWRETRY */
1610         (iw_handler) zd1201_set_encode,         /* SIOCSIWENCODE */
1611         (iw_handler) zd1201_get_encode,         /* SIOCGIWENCODE */
1612         (iw_handler) zd1201_set_power,          /* SIOCSIWPOWER */
1613         (iw_handler) zd1201_get_power,          /* SIOCGIWPOWER */
1614 };
1615
1616 static int zd1201_set_hostauth(struct net_device *dev,
1617     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1618 {
1619         struct zd1201 *zd = netdev_priv(dev);
1620
1621         if (!zd->ap)
1622                 return -EOPNOTSUPP;
1623
1624         return zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1625 }
1626
1627 static int zd1201_get_hostauth(struct net_device *dev,
1628     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1629 {
1630         struct zd1201 *zd = netdev_priv(dev);
1631         short hostauth;
1632         int err;
1633
1634         if (!zd->ap)
1635                 return -EOPNOTSUPP;
1636
1637         err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1638         if (err)
1639                 return err;
1640         rrq->value = hostauth;
1641         rrq->fixed = 1;
1642
1643         return 0;
1644 }
1645
1646 static int zd1201_auth_sta(struct net_device *dev,
1647     struct iw_request_info *info, struct sockaddr *sta, char *extra)
1648 {
1649         struct zd1201 *zd = netdev_priv(dev);
1650         unsigned char buffer[10];
1651
1652         if (!zd->ap)
1653                 return -EOPNOTSUPP;
1654
1655         memcpy(buffer, sta->sa_data, ETH_ALEN);
1656         *(short*)(buffer+6) = 0;        /* 0==success, 1==failure */
1657         *(short*)(buffer+8) = 0;
1658
1659         return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1660 }
1661
1662 static int zd1201_set_maxassoc(struct net_device *dev,
1663     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1664 {
1665         struct zd1201 *zd = netdev_priv(dev);
1666         int err;
1667
1668         if (!zd->ap)
1669                 return -EOPNOTSUPP;
1670
1671         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1672         if (err)
1673                 return err;
1674         return 0;
1675 }
1676
1677 static int zd1201_get_maxassoc(struct net_device *dev,
1678     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1679 {
1680         struct zd1201 *zd = netdev_priv(dev);
1681         short maxassoc;
1682         int err;
1683
1684         if (!zd->ap)
1685                 return -EOPNOTSUPP;
1686
1687         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1688         if (err)
1689                 return err;
1690         rrq->value = maxassoc;
1691         rrq->fixed = 1;
1692
1693         return 0;
1694 }
1695
1696 static const iw_handler zd1201_private_handler[] = {
1697         (iw_handler) zd1201_set_hostauth,       /* ZD1201SIWHOSTAUTH */
1698         (iw_handler) zd1201_get_hostauth,       /* ZD1201GIWHOSTAUTH */
1699         (iw_handler) zd1201_auth_sta,           /* ZD1201SIWAUTHSTA */
1700         (iw_handler) NULL,                      /* nothing to get */
1701         (iw_handler) zd1201_set_maxassoc,       /* ZD1201SIMAXASSOC */
1702         (iw_handler) zd1201_get_maxassoc,       /* ZD1201GIMAXASSOC */
1703 };
1704
1705 static const struct iw_priv_args zd1201_private_args[] = {
1706         { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1707             IW_PRIV_TYPE_NONE, "sethostauth" },
1708         { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1709             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1710         { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1711             IW_PRIV_TYPE_NONE, "authstation" },
1712         { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1713             IW_PRIV_TYPE_NONE, "setmaxassoc" },
1714         { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1715             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1716 };
1717
1718 static const struct iw_handler_def zd1201_iw_handlers = {
1719         .num_standard           = ARRAY_SIZE(zd1201_iw_handler),
1720         .num_private            = ARRAY_SIZE(zd1201_private_handler),
1721         .num_private_args       = ARRAY_SIZE(zd1201_private_args),
1722         .standard               = (iw_handler *)zd1201_iw_handler,
1723         .private                = (iw_handler *)zd1201_private_handler,
1724         .private_args           = (struct iw_priv_args *) zd1201_private_args,
1725         .get_wireless_stats     = zd1201_get_wireless_stats,
1726 };
1727
1728 static int zd1201_probe(struct usb_interface *interface,
1729                         const struct usb_device_id *id)
1730 {
1731         struct zd1201 *zd;
1732         struct net_device *dev;
1733         struct usb_device *usb;
1734         int err;
1735         short porttype;
1736         char buf[IW_ESSID_MAX_SIZE+2];
1737
1738         usb = interface_to_usbdev(interface);
1739
1740         dev = alloc_etherdev(sizeof(*zd));
1741         if (!dev)
1742                 return -ENOMEM;
1743         zd = netdev_priv(dev);
1744         zd->dev = dev;
1745
1746         zd->ap = ap;
1747         zd->usb = usb;
1748         zd->removed = 0;
1749         init_waitqueue_head(&zd->rxdataq);
1750         INIT_HLIST_HEAD(&zd->fraglist);
1751
1752         err = zd1201_fw_upload(usb, zd->ap);
1753         if (err) {
1754                 dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
1755                 goto err_zd;
1756         }
1757
1758         zd->endp_in = 1;
1759         zd->endp_out = 1;
1760         zd->endp_out2 = 2;
1761         zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1762         zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1763         if (!zd->rx_urb || !zd->tx_urb)
1764                 goto err_zd;
1765
1766         mdelay(100);
1767         err = zd1201_drvr_start(zd);
1768         if (err)
1769                 goto err_zd;
1770
1771         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
1772         if (err)
1773                 goto err_start;
1774
1775         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
1776             ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
1777         if (err)
1778                 goto err_start;
1779
1780         dev->open = zd1201_net_open;
1781         dev->stop = zd1201_net_stop;
1782         dev->get_stats = zd1201_get_stats;
1783         dev->wireless_handlers =
1784             (struct iw_handler_def *)&zd1201_iw_handlers;
1785         dev->hard_start_xmit = zd1201_hard_start_xmit;
1786         dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
1787         dev->tx_timeout = zd1201_tx_timeout;
1788         dev->set_multicast_list = zd1201_set_multicast;
1789         dev->set_mac_address = zd1201_set_mac_address;
1790         strcpy(dev->name, "wlan%d");
1791
1792         err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR,
1793             dev->dev_addr, dev->addr_len);
1794         if (err)
1795                 goto err_start;
1796
1797         /* Set wildcard essid to match zd->essid */
1798         *(__le16 *)buf = cpu_to_le16(0);
1799         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
1800             IW_ESSID_MAX_SIZE+2, 1);
1801         if (err)
1802                 goto err_start;
1803
1804         if (zd->ap)
1805                 porttype = ZD1201_PORTTYPE_AP;
1806         else
1807                 porttype = ZD1201_PORTTYPE_BSS;
1808         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1809         if (err)
1810                 goto err_start;
1811
1812         SET_NETDEV_DEV(dev, &usb->dev);
1813
1814         err = register_netdev(dev);
1815         if (err)
1816                 goto err_start;
1817         dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
1818             dev->name);
1819
1820         usb_set_intfdata(interface, zd);
1821         zd1201_enable(zd);      /* zd1201 likes to startup enabled, */
1822         zd1201_disable(zd);     /* interfering with all the wifis in range */
1823         return 0;
1824
1825 err_start:
1826         /* Leave the device in reset state */
1827         zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
1828 err_zd:
1829         usb_free_urb(zd->tx_urb);
1830         usb_free_urb(zd->rx_urb);
1831         free_netdev(dev);
1832         return err;
1833 }
1834
1835 static void zd1201_disconnect(struct usb_interface *interface)
1836 {
1837         struct zd1201 *zd=(struct zd1201 *)usb_get_intfdata(interface);
1838         struct hlist_node *node, *node2;
1839         struct zd1201_frag *frag;
1840
1841         if (!zd)
1842                 return;
1843         usb_set_intfdata(interface, NULL);
1844
1845         hlist_for_each_entry_safe(frag, node, node2, &zd->fraglist, fnode) {
1846                 hlist_del_init(&frag->fnode);
1847                 kfree_skb(frag->skb);
1848                 kfree(frag);
1849         }
1850
1851         if (zd->tx_urb) {
1852                 usb_kill_urb(zd->tx_urb);
1853                 usb_free_urb(zd->tx_urb);
1854         }
1855         if (zd->rx_urb) {
1856                 usb_kill_urb(zd->rx_urb);
1857                 usb_free_urb(zd->rx_urb);
1858         }
1859
1860         if (zd->dev) {
1861                 unregister_netdev(zd->dev);
1862                 free_netdev(zd->dev);
1863         }
1864 }
1865
1866 #ifdef CONFIG_PM
1867
1868 static int zd1201_suspend(struct usb_interface *interface,
1869                            pm_message_t message)
1870 {
1871         struct zd1201 *zd = usb_get_intfdata(interface);
1872
1873         netif_device_detach(zd->dev);
1874
1875         zd->was_enabled = zd->mac_enabled;
1876
1877         if (zd->was_enabled)
1878                 return zd1201_disable(zd);
1879         else
1880                 return 0;
1881 }
1882
1883 static int zd1201_resume(struct usb_interface *interface)
1884 {
1885         struct zd1201 *zd = usb_get_intfdata(interface);
1886
1887         if (!zd || !zd->dev)
1888                 return -ENODEV;
1889
1890         netif_device_attach(zd->dev);
1891
1892         if (zd->was_enabled)
1893                 return zd1201_enable(zd);
1894         else
1895                 return 0;
1896 }
1897
1898 #else
1899
1900 #define zd1201_suspend NULL
1901 #define zd1201_resume  NULL
1902
1903 #endif
1904
1905 static struct usb_driver zd1201_usb = {
1906         .name = "zd1201",
1907         .probe = zd1201_probe,
1908         .disconnect = zd1201_disconnect,
1909         .id_table = zd1201_table,
1910         .suspend = zd1201_suspend,
1911         .resume = zd1201_resume,
1912 };
1913
1914 static int __init zd1201_init(void)
1915 {
1916         return usb_register(&zd1201_usb);
1917 }
1918
1919 static void __exit zd1201_cleanup(void)
1920 {
1921         usb_deregister(&zd1201_usb);
1922 }
1923
1924 module_init(zd1201_init);
1925 module_exit(zd1201_cleanup);