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/slab.h>
  18 #include <linux/netdevice.h>
  19 #include <linux/etherdevice.h>
  20 #include <linux/wireless.h>
  21 #include <linux/ieee80211.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
  28 static 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
  38 static int ap;  /* Are we an AP or a normal station? */
  39
  40 #define ZD1201_VERSION  "0.15"
  41
  42 MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>");
  43 MODULE_DESCRIPTION("Driver for ZyDAS ZD1201 based USB Wireless adapters");
  44 MODULE_VERSION(ZD1201_VERSION);
  45 MODULE_LICENSE("GPL");
  46 module_param(ap, int, 0);
  47 MODULE_PARM_DESC(ap, "If non-zero Access Point firmware will be loaded");
  48 MODULE_DEVICE_TABLE(usb, zd1201_table);
  49
  50
  51 static 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                 goto exit;
  80
  81         while (len > 0) {
  82                 int translen = (len > 1024) ? 1024 : len;
  83                 memcpy(buf, data, translen);
  84
  85                 err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0,
  86                     USB_DIR_OUT | 0x40, 0, 0, buf, translen,
  87                     ZD1201_FW_TIMEOUT);
  88                 if (err < 0)
  89                         goto exit;
  90
  91                 len -= translen;
  92                 data += translen;
  93         }
  94
  95         err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0x2,
  96             USB_DIR_OUT | 0x40, 0, 0, NULL, 0, ZD1201_FW_TIMEOUT);
  97         if (err < 0)
  98                 goto exit;
  99
 100         err = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 0x4,
 101             USB_DIR_IN | 0x40, 0, 0, buf, sizeof(ret), ZD1201_FW_TIMEOUT);
 102         if (err < 0)
 103                 goto exit;
 104
 105         memcpy(&ret, buf, sizeof(ret));
 106
 107         if (ret & 0x80) {
 108                 err = -EIO;
 109                 goto exit;
 110         }
 111
 112         err = 0;
 113 exit:
 114         kfree(buf);
 115         release_firmware(fw_entry);
 116         return err;
 117 }
 118
 119 MODULE_FIRMWARE("zd1201-ap.fw");
 120 MODULE_FIRMWARE("zd1201.fw");
 121
 122 static void zd1201_usbfree(struct urb *urb)
 123 {
 124         struct zd1201 *zd = urb->context;
 125
 126         switch(urb->status) {
 127                 case -EILSEQ:
 128                 case -ENODEV:
 129                 case -ETIME:
 130                 case -ENOENT:
 131                 case -EPIPE:
 132                 case -EOVERFLOW:
 133                 case -ESHUTDOWN:
 134                         dev_warn(&zd->usb->dev, "%s: urb failed: %d\n",
 135                             zd->dev->name, urb->status);
 136         }
 137
 138         kfree(urb->transfer_buffer);
 139         usb_free_urb(urb);
 140 }
 141
 142 /* cmdreq message:
 143         u32 type
 144         u16 cmd
 145         u16 parm0
 146         u16 parm1
 147         u16 parm2
 148         u8  pad[4]
 149
 150         total: 4 + 2 + 2 + 2 + 2 + 4 = 16
 151 */
 152 static int zd1201_docmd(struct zd1201 *zd, int cmd, int parm0,
 153                         int parm1, int parm2)
 154 {
 155         unsigned char *command;
 156         int ret;
 157         struct urb *urb;
 158
 159         command = kmalloc(16, GFP_ATOMIC);
 160         if (!command)
 161                 return -ENOMEM;
 162
 163         *((__le32*)command) = cpu_to_le32(ZD1201_USB_CMDREQ);
 164         *((__le16*)&command[4]) = cpu_to_le16(cmd);
 165         *((__le16*)&command[6]) = cpu_to_le16(parm0);
 166         *((__le16*)&command[8]) = cpu_to_le16(parm1);
 167         *((__le16*)&command[10])= cpu_to_le16(parm2);
 168
 169         urb = usb_alloc_urb(0, GFP_ATOMIC);
 170         if (!urb) {
 171                 kfree(command);
 172                 return -ENOMEM;
 173         }
 174         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 175                           command, 16, zd1201_usbfree, zd);
 176         ret = usb_submit_urb(urb, GFP_ATOMIC);
 177         if (ret) {
 178                 kfree(command);
 179                 usb_free_urb(urb);
 180         }
 181
 182         return ret;
 183 }
 184
 185 /* Callback after sending out a packet */
 186 static void zd1201_usbtx(struct urb *urb)
 187 {
 188         struct zd1201 *zd = urb->context;
 189         netif_wake_queue(zd->dev);
 190 }
 191
 192 /* Incoming data */
 193 static void zd1201_usbrx(struct urb *urb)
 194 {
 195         struct zd1201 *zd = urb->context;
 196         int free = 0;
 197         unsigned char *data = urb->transfer_buffer;
 198         struct sk_buff *skb;
 199         unsigned char type;
 200
 201         if (!zd)
 202                 return;
 203
 204         switch(urb->status) {
 205                 case -EILSEQ:
 206                 case -ENODEV:
 207                 case -ETIME:
 208                 case -ENOENT:
 209                 case -EPIPE:
 210                 case -EOVERFLOW:
 211                 case -ESHUTDOWN:
 212                         dev_warn(&zd->usb->dev, "%s: rx urb failed: %d\n",
 213                             zd->dev->name, urb->status);
 214                         free = 1;
 215                         goto exit;
 216         }
 217
 218         if (urb->status != 0 || urb->actual_length == 0)
 219                 goto resubmit;
 220
 221         type = data[0];
 222         if (type == ZD1201_PACKET_EVENTSTAT || type == ZD1201_PACKET_RESOURCE) {
 223                 memcpy(zd->rxdata, data, urb->actual_length);
 224                 zd->rxlen = urb->actual_length;
 225                 zd->rxdatas = 1;
 226                 wake_up(&zd->rxdataq);
 227         }
 228         /* Info frame */
 229         if (type == ZD1201_PACKET_INQUIRE) {
 230                 int i = 0;
 231                 unsigned short infotype, framelen, copylen;
 232                 framelen = le16_to_cpu(*(__le16*)&data[4]);
 233                 infotype = le16_to_cpu(*(__le16*)&data[6]);
 234
 235                 if (infotype == ZD1201_INF_LINKSTATUS) {
 236                         short linkstatus;
 237
 238                         linkstatus = le16_to_cpu(*(__le16*)&data[8]);
 239                         switch(linkstatus) {
 240                                 case 1:
 241                                         netif_carrier_on(zd->dev);
 242                                         break;
 243                                 case 2:
 244                                         netif_carrier_off(zd->dev);
 245                                         break;
 246                                 case 3:
 247                                         netif_carrier_off(zd->dev);
 248                                         break;
 249                                 case 4:
 250                                         netif_carrier_on(zd->dev);
 251                                         break;
 252                                 default:
 253                                         netif_carrier_off(zd->dev);
 254                         }
 255                         goto resubmit;
 256                 }
 257                 if (infotype == ZD1201_INF_ASSOCSTATUS) {
 258                         short status = le16_to_cpu(*(__le16*)(data+8));
 259                         int event;
 260                         union iwreq_data wrqu;
 261
 262                         switch (status) {
 263                                 case ZD1201_ASSOCSTATUS_STAASSOC:
 264                                 case ZD1201_ASSOCSTATUS_REASSOC:
 265                                         event = IWEVREGISTERED;
 266                                         break;
 267                                 case ZD1201_ASSOCSTATUS_DISASSOC:
 268                                 case ZD1201_ASSOCSTATUS_ASSOCFAIL:
 269                                 case ZD1201_ASSOCSTATUS_AUTHFAIL:
 270                                 default:
 271                                         event = IWEVEXPIRED;
 272                         }
 273                         memcpy(wrqu.addr.sa_data, data+10, ETH_ALEN);
 274                         wrqu.addr.sa_family = ARPHRD_ETHER;
 275
 276                         /* Send event to user space */
 277                         wireless_send_event(zd->dev, event, &wrqu, NULL);
 278
 279                         goto resubmit;
 280                 }
 281                 if (infotype == ZD1201_INF_AUTHREQ) {
 282                         union iwreq_data wrqu;
 283
 284                         memcpy(wrqu.addr.sa_data, data+8, ETH_ALEN);
 285                         wrqu.addr.sa_family = ARPHRD_ETHER;
 286                         /* There isn't a event that trully fits this request.
 287                            We assume that userspace will be smart enough to
 288                            see a new station being expired and sends back a
 289                            authstation ioctl to authorize it. */
 290                         wireless_send_event(zd->dev, IWEVEXPIRED, &wrqu, NULL);
 291                         goto resubmit;
 292                 }
 293                 /* Other infotypes are handled outside this handler */
 294                 zd->rxlen = 0;
 295                 while (i < urb->actual_length) {
 296                         copylen = le16_to_cpu(*(__le16*)&data[i+2]);
 297                         /* Sanity check, sometimes we get junk */
 298                         if (copylen+zd->rxlen > sizeof(zd->rxdata))
 299                                 break;
 300                         memcpy(zd->rxdata+zd->rxlen, data+i+4, copylen);
 301                         zd->rxlen += copylen;
 302                         i += 64;
 303                 }
 304                 if (i >= urb->actual_length) {
 305                         zd->rxdatas = 1;
 306                         wake_up(&zd->rxdataq);
 307                 }
 308                 goto  resubmit;
 309         }
 310         /* Actual data */
 311         if (data[urb->actual_length-1] == ZD1201_PACKET_RXDATA) {
 312                 int datalen = urb->actual_length-1;
 313                 unsigned short len, fc, seq;
 314
 315                 len = ntohs(*(__be16 *)&data[datalen-2]);
 316                 if (len>datalen)
 317                         len=datalen;
 318                 fc = le16_to_cpu(*(__le16 *)&data[datalen-16]);
 319                 seq = le16_to_cpu(*(__le16 *)&data[datalen-24]);
 320
 321                 if (zd->monitor) {
 322                         if (datalen < 24)
 323                                 goto resubmit;
 324                         if (!(skb = dev_alloc_skb(datalen+24)))
 325                                 goto resubmit;
 326
 327                         memcpy(skb_put(skb, 2), &data[datalen-16], 2);
 328                         memcpy(skb_put(skb, 2), &data[datalen-2], 2);
 329                         memcpy(skb_put(skb, 6), &data[datalen-14], 6);
 330                         memcpy(skb_put(skb, 6), &data[datalen-22], 6);
 331                         memcpy(skb_put(skb, 6), &data[datalen-8], 6);
 332                         memcpy(skb_put(skb, 2), &data[datalen-24], 2);
 333                         memcpy(skb_put(skb, len), data, len);
 334                         skb->protocol = eth_type_trans(skb, zd->dev);
 335                         zd->dev->stats.rx_packets++;
 336                         zd->dev->stats.rx_bytes += skb->len;
 337                         netif_rx(skb);
 338                         goto resubmit;
 339                 }
 340
 341                 if ((seq & IEEE80211_SCTL_FRAG) ||
 342                     (fc & IEEE80211_FCTL_MOREFRAGS)) {
 343                         struct zd1201_frag *frag = NULL;
 344                         char *ptr;
 345
 346                         if (datalen<14)
 347                                 goto resubmit;
 348                         if ((seq & IEEE80211_SCTL_FRAG) == 0) {
 349                                 frag = kmalloc(sizeof(*frag), GFP_ATOMIC);
 350                                 if (!frag)
 351                                         goto resubmit;
 352                                 skb = dev_alloc_skb(IEEE80211_MAX_DATA_LEN +14+2);
 353                                 if (!skb) {
 354                                         kfree(frag);
 355                                         goto resubmit;
 356                                 }
 357                                 frag->skb = skb;
 358                                 frag->seq = seq & IEEE80211_SCTL_SEQ;
 359                                 skb_reserve(skb, 2);
 360                                 memcpy(skb_put(skb, 12), &data[datalen-14], 12);
 361                                 memcpy(skb_put(skb, 2), &data[6], 2);
 362                                 memcpy(skb_put(skb, len), data+8, len);
 363                                 hlist_add_head(&frag->fnode, &zd->fraglist);
 364                                 goto resubmit;
 365                         }
 366                         hlist_for_each_entry(frag, &zd->fraglist, fnode)
 367                                 if (frag->seq == (seq&IEEE80211_SCTL_SEQ))
 368                                         break;
 369                         if (!frag)
 370                                 goto resubmit;
 371                         skb = frag->skb;
 372                         ptr = skb_put(skb, len);
 373                         if (ptr)
 374                                 memcpy(ptr, data+8, len);
 375                         if (fc & IEEE80211_FCTL_MOREFRAGS)
 376                                 goto resubmit;
 377                         hlist_del_init(&frag->fnode);
 378                         kfree(frag);
 379                 } else {
 380                         if (datalen<14)
 381                                 goto resubmit;
 382                         skb = dev_alloc_skb(len + 14 + 2);
 383                         if (!skb)
 384                                 goto resubmit;
 385                         skb_reserve(skb, 2);
 386                         memcpy(skb_put(skb, 12), &data[datalen-14], 12);
 387                         memcpy(skb_put(skb, 2), &data[6], 2);
 388                         memcpy(skb_put(skb, len), data+8, len);
 389                 }
 390                 skb->protocol = eth_type_trans(skb, zd->dev);
 391                 zd->dev->stats.rx_packets++;
 392                 zd->dev->stats.rx_bytes += skb->len;
 393                 netif_rx(skb);
 394         }
 395 resubmit:
 396         memset(data, 0, ZD1201_RXSIZE);
 397
 398         urb->status = 0;
 399         urb->dev = zd->usb;
 400         if(usb_submit_urb(urb, GFP_ATOMIC))
 401                 free = 1;
 402
 403 exit:
 404         if (free) {
 405                 zd->rxlen = 0;
 406                 zd->rxdatas = 1;
 407                 wake_up(&zd->rxdataq);
 408                 kfree(urb->transfer_buffer);
 409         }
 410 }
 411
 412 static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
 413         unsigned int riddatalen)
 414 {
 415         int err;
 416         int i = 0;
 417         int code;
 418         int rid_fid;
 419         int length;
 420         unsigned char *pdata;
 421
 422         zd->rxdatas = 0;
 423         err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
 424         if (err)
 425                 return err;
 426
 427         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 428         if (!zd->rxlen)
 429                 return -EIO;
 430
 431         code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
 432         rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
 433         length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
 434         if (length > zd->rxlen)
 435                 length = zd->rxlen-6;
 436
 437         /* If access bit is not on, then error */
 438         if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
 439                 return -EINVAL;
 440
 441         /* Not enough buffer for allocating data */
 442         if (riddatalen != (length - 4)) {
 443                 dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
 444                     riddatalen, zd->rxlen, length, rid, rid_fid);
 445                 return -ENODATA;
 446         }
 447
 448         zd->rxdatas = 0;
 449         /* Issue SetRxRid commnd */
 450         err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
 451         if (err)
 452                 return err;
 453
 454         /* Receive RID record from resource packets */
 455         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 456         if (!zd->rxlen)
 457                 return -EIO;
 458
 459         if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
 460                 dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
 461                     zd->rxdata[zd->rxlen-1]);
 462                 return -EINVAL;
 463         }
 464
 465         /* Set the data pointer and received data length */
 466         pdata = zd->rxdata;
 467         length = zd->rxlen;
 468
 469         do {
 470                 int actual_length;
 471
 472                 actual_length = (length > 64) ? 64 : length;
 473
 474                 if (pdata[0] != 0x3) {
 475                         dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
 476                             pdata[0]);
 477                         return -EINVAL;
 478                 }
 479
 480                 if (actual_length != 64) {
 481                         /* Trim the last packet type byte */
 482                         actual_length--;
 483                 }
 484
 485                 /* Skip the 4 bytes header (RID length and RID) */
 486                 if (i == 0) {
 487                         pdata += 8;
 488                         actual_length -= 8;
 489                 } else {
 490                         pdata += 4;
 491                         actual_length -= 4;
 492                 }
 493
 494                 memcpy(riddata, pdata, actual_length);
 495                 riddata += actual_length;
 496                 pdata += actual_length;
 497                 length -= 64;
 498                 i++;
 499         } while (length > 0);
 500
 501         return 0;
 502 }
 503
 504 /*
 505  *      resreq:
 506  *              byte    type
 507  *              byte    sequence
 508  *              u16     reserved
 509  *              byte    data[12]
 510  *      total: 16
 511  */
 512 static int zd1201_setconfig(struct zd1201 *zd, int rid, void *buf, int len, int wait)
 513 {
 514         int err;
 515         unsigned char *request;
 516         int reqlen;
 517         char seq=0;
 518         struct urb *urb;
 519         gfp_t gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
 520
 521         len += 4;                       /* first 4 are for header */
 522
 523         zd->rxdatas = 0;
 524         zd->rxlen = 0;
 525         for (seq=0; len > 0; seq++) {
 526                 request = kmalloc(16, gfp_mask);
 527                 if (!request)
 528                         return -ENOMEM;
 529                 urb = usb_alloc_urb(0, gfp_mask);
 530                 if (!urb) {
 531                         kfree(request);
 532                         return -ENOMEM;
 533                 }
 534                 memset(request, 0, 16);
 535                 reqlen = len>12 ? 12 : len;
 536                 request[0] = ZD1201_USB_RESREQ;
 537                 request[1] = seq;
 538                 request[2] = 0;
 539                 request[3] = 0;
 540                 if (request[1] == 0) {
 541                         /* add header */
 542                         *(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
 543                         *(__le16*)&request[6] = cpu_to_le16(rid);
 544                         memcpy(request+8, buf, reqlen-4);
 545                         buf += reqlen-4;
 546                 } else {
 547                         memcpy(request+4, buf, reqlen);
 548                         buf += reqlen;
 549                 }
 550
 551                 len -= reqlen;
 552
 553                 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
 554                     zd->endp_out2), request, 16, zd1201_usbfree, zd);
 555                 err = usb_submit_urb(urb, gfp_mask);
 556                 if (err)
 557                         goto err;
 558         }
 559
 560         request = kmalloc(16, gfp_mask);
 561         if (!request)
 562                 return -ENOMEM;
 563         urb = usb_alloc_urb(0, gfp_mask);
 564         if (!urb) {
 565                 kfree(request);
 566                 return -ENOMEM;
 567         }
 568         *((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
 569         *((__le16*)&request[4]) =
 570             cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
 571         *((__le16*)&request[6]) = cpu_to_le16(rid);
 572         *((__le16*)&request[8]) = cpu_to_le16(0);
 573         *((__le16*)&request[10]) = cpu_to_le16(0);
 574         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 575              request, 16, zd1201_usbfree, zd);
 576         err = usb_submit_urb(urb, gfp_mask);
 577         if (err)
 578                 goto err;
 579
 580         if (wait) {
 581                 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 582                 if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
 583                         dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
 584                 }
 585         }
 586
 587         return 0;
 588 err:
 589         kfree(request);
 590         usb_free_urb(urb);
 591         return err;
 592 }
 593
 594 static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
 595 {
 596         int err;
 597         __le16 zdval;
 598
 599         err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
 600         if (err)
 601                 return err;
 602         *val = le16_to_cpu(zdval);
 603         return 0;
 604 }
 605
 606 static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
 607 {
 608         __le16 zdval = cpu_to_le16(val);
 609         return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
 610 }
 611
 612 static int zd1201_drvr_start(struct zd1201 *zd)
 613 {
 614         int err, i;
 615         short max;
 616         __le16 zdmax;
 617         unsigned char *buffer;
 618
 619         buffer = kzalloc(ZD1201_RXSIZE, GFP_KERNEL);
 620         if (!buffer)
 621                 return -ENOMEM;
 622
 623         usb_fill_bulk_urb(zd->rx_urb, zd->usb,
 624             usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
 625             zd1201_usbrx, zd);
 626
 627         err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
 628         if (err)
 629                 goto err_buffer;
 630
 631         err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
 632         if (err)
 633                 goto err_urb;
 634
 635         err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
 636             sizeof(__le16));
 637         if (err)
 638                 goto err_urb;
 639
 640         max = le16_to_cpu(zdmax);
 641         for (i=0; i<max; i++) {
 642                 err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
 643                 if (err)
 644                         goto err_urb;
 645         }
 646
 647         return 0;
 648
 649 err_urb:
 650         usb_kill_urb(zd->rx_urb);
 651         return err;
 652 err_buffer:
 653         kfree(buffer);
 654         return err;
 655 }
 656
 657 /*      Magic alert: The firmware doesn't seem to like the MAC state being
 658  *      toggled in promisc (aka monitor) mode.
 659  *      (It works a number of times, but will halt eventually)
 660  *      So we turn it of before disabling and on after enabling if needed.
 661  */
 662 static int zd1201_enable(struct zd1201 *zd)
 663 {
 664         int err;
 665
 666         if (zd->mac_enabled)
 667                 return 0;
 668
 669         err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
 670         if (!err)
 671                 zd->mac_enabled = 1;
 672
 673         if (zd->monitor)
 674                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
 675
 676         return err;
 677 }
 678
 679 static int zd1201_disable(struct zd1201 *zd)
 680 {
 681         int err;
 682
 683         if (!zd->mac_enabled)
 684                 return 0;
 685         if (zd->monitor) {
 686                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 687                 if (err)
 688                         return err;
 689         }
 690
 691         err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
 692         if (!err)
 693                 zd->mac_enabled = 0;
 694         return err;
 695 }
 696
 697 static int zd1201_mac_reset(struct zd1201 *zd)
 698 {
 699         if (!zd->mac_enabled)
 700                 return 0;
 701         zd1201_disable(zd);
 702         return zd1201_enable(zd);
 703 }
 704
 705 static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
 706 {
 707         int err, val;
 708         char buf[IW_ESSID_MAX_SIZE+2];
 709
 710         err = zd1201_disable(zd);
 711         if (err)
 712                 return err;
 713
 714         val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
 715         val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
 716         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
 717         if (err)
 718                 return err;
 719
 720         *(__le16 *)buf = cpu_to_le16(essidlen);
 721         memcpy(buf+2, essid, essidlen);
 722         if (!zd->ap) {  /* Normal station */
 723                 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
 724                     IW_ESSID_MAX_SIZE+2, 1);
 725                 if (err)
 726                         return err;
 727         } else {        /* AP */
 728                 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
 729                     IW_ESSID_MAX_SIZE+2, 1);
 730                 if (err)
 731                         return err;
 732         }
 733
 734         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 735             zd->dev->dev_addr, zd->dev->addr_len, 1);
 736         if (err)
 737                 return err;
 738
 739         err = zd1201_enable(zd);
 740         if (err)
 741                 return err;
 742
 743         msleep(100);
 744         return 0;
 745 }
 746
 747 static int zd1201_net_open(struct net_device *dev)
 748 {
 749         struct zd1201 *zd = netdev_priv(dev);
 750
 751         /* Start MAC with wildcard if no essid set */
 752         if (!zd->mac_enabled)
 753                 zd1201_join(zd, zd->essid, zd->essidlen);
 754         netif_start_queue(dev);
 755
 756         return 0;
 757 }
 758
 759 static int zd1201_net_stop(struct net_device *dev)
 760 {
 761         netif_stop_queue(dev);
 762         return 0;
 763 }
 764
 765 /*
 766         RFC 1042 encapsulates Ethernet frames in 802.11 frames
 767         by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
 768         (0x00, 0x00, 0x00). Zd requires an additional padding, copy
 769         of ethernet addresses, length of the standard RFC 1042 packet
 770         and a command byte (which is nul for tx).
 771
 772         tx frame (from Wlan NG):
 773         RFC 1042:
 774                 llc             0xAA 0xAA 0x03 (802.2 LLC)
 775                 snap            0x00 0x00 0x00 (Ethernet encapsulated)
 776                 type            2 bytes, Ethernet type field
 777                 payload         (minus eth header)
 778         Zydas specific:
 779                 padding         1B if (skb->len+8+1)%64==0
 780                 Eth MAC addr    12 bytes, Ethernet MAC addresses
 781                 length          2 bytes, RFC 1042 packet length
 782                                 (llc+snap+type+payload)
 783                 zd              1 null byte, zd1201 packet type
 784  */
 785 static netdev_tx_t zd1201_hard_start_xmit(struct sk_buff *skb,
 786                                                 struct net_device *dev)
 787 {
 788         struct zd1201 *zd = netdev_priv(dev);
 789         unsigned char *txbuf = zd->txdata;
 790         int txbuflen, pad = 0, err;
 791         struct urb *urb = zd->tx_urb;
 792
 793         if (!zd->mac_enabled || zd->monitor) {
 794                 dev->stats.tx_dropped++;
 795                 kfree_skb(skb);
 796                 return NETDEV_TX_OK;
 797         }
 798         netif_stop_queue(dev);
 799
 800         txbuflen = skb->len + 8 + 1;
 801         if (txbuflen%64 == 0) {
 802                 pad = 1;
 803                 txbuflen++;
 804         }
 805         txbuf[0] = 0xAA;
 806         txbuf[1] = 0xAA;
 807         txbuf[2] = 0x03;
 808         txbuf[3] = 0x00;        /* rfc1042 */
 809         txbuf[4] = 0x00;
 810         txbuf[5] = 0x00;
 811
 812         skb_copy_from_linear_data_offset(skb, 12, txbuf + 6, skb->len - 12);
 813         if (pad)
 814                 txbuf[skb->len-12+6]=0;
 815         skb_copy_from_linear_data(skb, txbuf + skb->len - 12 + 6 + pad, 12);
 816         *(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
 817         txbuf[txbuflen-1] = 0;
 818
 819         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
 820             txbuf, txbuflen, zd1201_usbtx, zd);
 821
 822         err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
 823         if (err) {
 824                 dev->stats.tx_errors++;
 825                 netif_start_queue(dev);
 826         } else {
 827                 dev->stats.tx_packets++;
 828                 dev->stats.tx_bytes += skb->len;
 829         }
 830         kfree_skb(skb);
 831
 832         return NETDEV_TX_OK;
 833 }
 834
 835 static void zd1201_tx_timeout(struct net_device *dev)
 836 {
 837         struct zd1201 *zd = netdev_priv(dev);
 838
 839         if (!zd)
 840                 return;
 841         dev_warn(&zd->usb->dev, "%s: TX timeout, shooting down urb\n",
 842             dev->name);
 843         usb_unlink_urb(zd->tx_urb);
 844         dev->stats.tx_errors++;
 845         /* Restart the timeout to quiet the watchdog: */
 846         dev->trans_start = jiffies; /* prevent tx timeout */
 847 }
 848
 849 static int zd1201_set_mac_address(struct net_device *dev, void *p)
 850 {
 851         struct sockaddr *addr = p;
 852         struct zd1201 *zd = netdev_priv(dev);
 853         int err;
 854
 855         if (!zd)
 856                 return -ENODEV;
 857
 858         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 859             addr->sa_data, dev->addr_len, 1);
 860         if (err)
 861                 return err;
 862         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
 863
 864         return zd1201_mac_reset(zd);
 865 }
 866
 867 static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
 868 {
 869         struct zd1201 *zd = netdev_priv(dev);
 870
 871         return &zd->iwstats;
 872 }
 873
 874 static void zd1201_set_multicast(struct net_device *dev)
 875 {
 876         struct zd1201 *zd = netdev_priv(dev);
 877         struct netdev_hw_addr *ha;
 878         unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
 879         int i;
 880
 881         if (netdev_mc_count(dev) > ZD1201_MAXMULTI)
 882                 return;
 883
 884         i = 0;
 885         netdev_for_each_mc_addr(ha, dev)
 886                 memcpy(reqbuf + i++ * ETH_ALEN, ha->addr, ETH_ALEN);
 887         zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
 888                          netdev_mc_count(dev) * ETH_ALEN, 0);
 889 }
 890
 891 static int zd1201_config_commit(struct net_device *dev,
 892     struct iw_request_info *info, struct iw_point *data, char *essid)
 893 {
 894         struct zd1201 *zd = netdev_priv(dev);
 895
 896         return zd1201_mac_reset(zd);
 897 }
 898
 899 static int zd1201_get_name(struct net_device *dev,
 900     struct iw_request_info *info, char *name, char *extra)
 901 {
 902         strcpy(name, "IEEE 802.11b");
 903         return 0;
 904 }
 905
 906 static int zd1201_set_freq(struct net_device *dev,
 907     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 908 {
 909         struct zd1201 *zd = netdev_priv(dev);
 910         short channel = 0;
 911         int err;
 912
 913         if (freq->e == 0)
 914                 channel = freq->m;
 915         else {
 916                 channel = ieee80211_freq_to_dsss_chan(freq->m);
 917                 if (channel < 0)
 918                         channel = 0;
 919         }
 920
 921         err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
 922         if (err)
 923                 return err;
 924
 925         zd1201_mac_reset(zd);
 926
 927         return 0;
 928 }
 929
 930 static int zd1201_get_freq(struct net_device *dev,
 931     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 932 {
 933         struct zd1201 *zd = netdev_priv(dev);
 934         short channel;
 935         int err;
 936
 937         err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
 938         if (err)
 939                 return err;
 940         freq->e = 0;
 941         freq->m = channel;
 942
 943         return 0;
 944 }
 945
 946 static int zd1201_set_mode(struct net_device *dev,
 947     struct iw_request_info *info, __u32 *mode, char *extra)
 948 {
 949         struct zd1201 *zd = netdev_priv(dev);
 950         short porttype, monitor = 0;
 951         unsigned char buffer[IW_ESSID_MAX_SIZE+2];
 952         int err;
 953
 954         if (zd->ap) {
 955                 if (*mode != IW_MODE_MASTER)
 956                         return -EINVAL;
 957                 return 0;
 958         }
 959
 960         err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 961         if (err)
 962                 return err;
 963         zd->dev->type = ARPHRD_ETHER;
 964         switch(*mode) {
 965                 case IW_MODE_MONITOR:
 966                         monitor = 1;
 967                         zd->dev->type = ARPHRD_IEEE80211;
 968                         /* Make sure we are no longer associated with by
 969                            setting an 'impossible' essid.
 970                            (otherwise we mess up firmware)
 971                          */
 972                         zd1201_join(zd, "\0-*#\0", 5);
 973                         /* Put port in pIBSS */
 974                 case 8: /* No pseudo-IBSS in wireless extensions (yet) */
 975                         porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
 976                         break;
 977                 case IW_MODE_ADHOC:
 978                         porttype = ZD1201_PORTTYPE_IBSS;
 979                         break;
 980                 case IW_MODE_INFRA:
 981                         porttype = ZD1201_PORTTYPE_BSS;
 982                         break;
 983                 default:
 984                         return -EINVAL;
 985         }
 986
 987         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
 988         if (err)
 989                 return err;
 990         if (zd->monitor && !monitor) {
 991                         zd1201_disable(zd);
 992                         *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
 993                         memcpy(buffer+2, zd->essid, zd->essidlen);
 994                         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
 995                             buffer, IW_ESSID_MAX_SIZE+2, 1);
 996                         if (err)
 997                                 return err;
 998         }
 999         zd->monitor = monitor;
1000         /* If monitor mode is set we don't actually turn it on here since it
1001          * is done during mac reset anyway (see zd1201_mac_enable).
1002          */
1003         zd1201_mac_reset(zd);
1004
1005         return 0;
1006 }
1007
1008 static int zd1201_get_mode(struct net_device *dev,
1009     struct iw_request_info *info, __u32 *mode, char *extra)
1010 {
1011         struct zd1201 *zd = netdev_priv(dev);
1012         short porttype;
1013         int err;
1014
1015         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1016         if (err)
1017                 return err;
1018         switch(porttype) {
1019                 case ZD1201_PORTTYPE_IBSS:
1020                         *mode = IW_MODE_ADHOC;
1021                         break;
1022                 case ZD1201_PORTTYPE_BSS:
1023                         *mode = IW_MODE_INFRA;
1024                         break;
1025                 case ZD1201_PORTTYPE_WDS:
1026                         *mode = IW_MODE_REPEAT;
1027                         break;
1028                 case ZD1201_PORTTYPE_PSEUDOIBSS:
1029                         *mode = 8;/* No Pseudo-IBSS... */
1030                         break;
1031                 case ZD1201_PORTTYPE_AP:
1032                         *mode = IW_MODE_MASTER;
1033                         break;
1034                 default:
1035                         dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1036                             porttype);
1037                         *mode = IW_MODE_AUTO;
1038         }
1039         if (zd->monitor)
1040                 *mode = IW_MODE_MONITOR;
1041
1042         return 0;
1043 }
1044
1045 static int zd1201_get_range(struct net_device *dev,
1046     struct iw_request_info *info, struct iw_point *wrq, char *extra)
1047 {
1048         struct iw_range *range = (struct iw_range *)extra;
1049
1050         wrq->length = sizeof(struct iw_range);
1051         memset(range, 0, sizeof(struct iw_range));
1052         range->we_version_compiled = WIRELESS_EXT;
1053         range->we_version_source = WIRELESS_EXT;
1054
1055         range->max_qual.qual = 128;
1056         range->max_qual.level = 128;
1057         range->max_qual.noise = 128;
1058         range->max_qual.updated = 7;
1059
1060         range->encoding_size[0] = 5;
1061         range->encoding_size[1] = 13;
1062         range->num_encoding_sizes = 2;
1063         range->max_encoding_tokens = ZD1201_NUMKEYS;
1064
1065         range->num_bitrates = 4;
1066         range->bitrate[0] = 1000000;
1067         range->bitrate[1] = 2000000;
1068         range->bitrate[2] = 5500000;
1069         range->bitrate[3] = 11000000;
1070
1071         range->min_rts = 0;
1072         range->min_frag = ZD1201_FRAGMIN;
1073         range->max_rts = ZD1201_RTSMAX;
1074         range->min_frag = ZD1201_FRAGMAX;
1075
1076         return 0;
1077 }
1078
1079 /*      Little bit of magic here: we only get the quality if we poll
1080  *      for it, and we never get an actual request to trigger such
1081  *      a poll. Therefore we 'assume' that the user will soon ask for
1082  *      the stats after asking the bssid.
1083  */
1084 static int zd1201_get_wap(struct net_device *dev,
1085     struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1086 {
1087         struct zd1201 *zd = netdev_priv(dev);
1088         unsigned char buffer[6];
1089
1090         if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1091                 /* Unfortunately the quality and noise reported is useless.
1092                    they seem to be accumulators that increase until you
1093                    read them, unless we poll on a fixed interval we can't
1094                    use them
1095                  */
1096                 /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1097                 zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1098                 /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1099                 zd->iwstats.qual.updated = 2;
1100         }
1101
1102         return zd1201_getconfig(zd, ZD1201_RID_CURRENTBSSID, ap_addr->sa_data, 6);
1103 }
1104
1105 static int zd1201_set_scan(struct net_device *dev,
1106     struct iw_request_info *info, struct iw_point *srq, char *extra)
1107 {
1108         /* We do everything in get_scan */
1109         return 0;
1110 }
1111
1112 static int zd1201_get_scan(struct net_device *dev,
1113     struct iw_request_info *info, struct iw_point *srq, char *extra)
1114 {
1115         struct zd1201 *zd = netdev_priv(dev);
1116         int err, i, j, enabled_save;
1117         struct iw_event iwe;
1118         char *cev = extra;
1119         char *end_buf = extra + IW_SCAN_MAX_DATA;
1120
1121         /* No scanning in AP mode */
1122         if (zd->ap)
1123                 return -EOPNOTSUPP;
1124
1125         /* Scan doesn't seem to work if disabled */
1126         enabled_save = zd->mac_enabled;
1127         zd1201_enable(zd);
1128
1129         zd->rxdatas = 0;
1130         err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE,
1131              ZD1201_INQ_SCANRESULTS, 0, 0);
1132         if (err)
1133                 return err;
1134
1135         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1136         if (!zd->rxlen)
1137                 return -EIO;
1138
1139         if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1140                 return -EIO;
1141
1142         for(i=8; i<zd->rxlen; i+=62) {
1143                 iwe.cmd = SIOCGIWAP;
1144                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1145                 memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1146                 cev = iwe_stream_add_event(info, cev, end_buf,
1147                                            &iwe, IW_EV_ADDR_LEN);
1148
1149                 iwe.cmd = SIOCGIWESSID;
1150                 iwe.u.data.length = zd->rxdata[i+16];
1151                 iwe.u.data.flags = 1;
1152                 cev = iwe_stream_add_point(info, cev, end_buf,
1153                                            &iwe, zd->rxdata+i+18);
1154
1155                 iwe.cmd = SIOCGIWMODE;
1156                 if (zd->rxdata[i+14]&0x01)
1157                         iwe.u.mode = IW_MODE_MASTER;
1158                 else
1159                         iwe.u.mode = IW_MODE_ADHOC;
1160                 cev = iwe_stream_add_event(info, cev, end_buf,
1161                                            &iwe, IW_EV_UINT_LEN);
1162
1163                 iwe.cmd = SIOCGIWFREQ;
1164                 iwe.u.freq.m = zd->rxdata[i+0];
1165                 iwe.u.freq.e = 0;
1166                 cev = iwe_stream_add_event(info, cev, end_buf,
1167                                            &iwe, IW_EV_FREQ_LEN);
1168
1169                 iwe.cmd = SIOCGIWRATE;
1170                 iwe.u.bitrate.fixed = 0;
1171                 iwe.u.bitrate.disabled = 0;
1172                 for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
1173                         iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
1174                         cev = iwe_stream_add_event(info, cev, end_buf,
1175                                                    &iwe, IW_EV_PARAM_LEN);
1176                 }
1177
1178                 iwe.cmd = SIOCGIWENCODE;
1179                 iwe.u.data.length = 0;
1180                 if (zd->rxdata[i+14]&0x10)
1181                         iwe.u.data.flags = IW_ENCODE_ENABLED;
1182                 else
1183                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1184                 cev = iwe_stream_add_point(info, cev, end_buf, &iwe, NULL);
1185
1186                 iwe.cmd = IWEVQUAL;
1187                 iwe.u.qual.qual = zd->rxdata[i+4];
1188                 iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
1189                 iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
1190                 iwe.u.qual.updated = 7;
1191                 cev = iwe_stream_add_event(info, cev, end_buf,
1192                                            &iwe, IW_EV_QUAL_LEN);
1193         }
1194
1195         if (!enabled_save)
1196                 zd1201_disable(zd);
1197
1198         srq->length = cev - extra;
1199         srq->flags = 0;
1200
1201         return 0;
1202 }
1203
1204 static int zd1201_set_essid(struct net_device *dev,
1205     struct iw_request_info *info, struct iw_point *data, char *essid)
1206 {
1207         struct zd1201 *zd = netdev_priv(dev);
1208
1209         if (data->length > IW_ESSID_MAX_SIZE)
1210                 return -EINVAL;
1211         if (data->length < 1)
1212                 data->length = 1;
1213         zd->essidlen = data->length;
1214         memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1215         memcpy(zd->essid, essid, data->length);
1216         return zd1201_join(zd, zd->essid, zd->essidlen);
1217 }
1218
1219 static int zd1201_get_essid(struct net_device *dev,
1220     struct iw_request_info *info, struct iw_point *data, char *essid)
1221 {
1222         struct zd1201 *zd = netdev_priv(dev);
1223
1224         memcpy(essid, zd->essid, zd->essidlen);
1225         data->flags = 1;
1226         data->length = zd->essidlen;
1227
1228         return 0;
1229 }
1230
1231 static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1232     struct iw_point *data, char *nick)
1233 {
1234         strcpy(nick, "zd1201");
1235         data->flags = 1;
1236         data->length = strlen(nick);
1237         return 0;
1238 }
1239
1240 static int zd1201_set_rate(struct net_device *dev,
1241     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1242 {
1243         struct zd1201 *zd = netdev_priv(dev);
1244         short rate;
1245         int err;
1246
1247         switch (rrq->value) {
1248                 case 1000000:
1249                         rate = ZD1201_RATEB1;
1250                         break;
1251                 case 2000000:
1252                         rate = ZD1201_RATEB2;
1253                         break;
1254                 case 5500000:
1255                         rate = ZD1201_RATEB5;
1256                         break;
1257                 case 11000000:
1258                 default:
1259                         rate = ZD1201_RATEB11;
1260                         break;
1261         }
1262         if (!rrq->fixed) { /* Also enable all lower bitrates */
1263                 rate |= rate-1;
1264         }
1265
1266         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1267         if (err)
1268                 return err;
1269
1270         return zd1201_mac_reset(zd);
1271 }
1272
1273 static int zd1201_get_rate(struct net_device *dev,
1274     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1275 {
1276         struct zd1201 *zd = netdev_priv(dev);
1277         short rate;
1278         int err;
1279
1280         err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1281         if (err)
1282                 return err;
1283
1284         switch(rate) {
1285                 case 1:
1286                         rrq->value = 1000000;
1287                         break;
1288                 case 2:
1289                         rrq->value = 2000000;
1290                         break;
1291                 case 5:
1292                         rrq->value = 5500000;
1293                         break;
1294                 case 11:
1295                         rrq->value = 11000000;
1296                         break;
1297                 default:
1298                         rrq->value = 0;
1299         }
1300         rrq->fixed = 0;
1301         rrq->disabled = 0;
1302
1303         return 0;
1304 }
1305
1306 static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1307     struct iw_param *rts, char *extra)
1308 {
1309         struct zd1201 *zd = netdev_priv(dev);
1310         int err;
1311         short val = rts->value;
1312
1313         if (rts->disabled || !rts->fixed)
1314                 val = ZD1201_RTSMAX;
1315         if (val > ZD1201_RTSMAX)
1316                 return -EINVAL;
1317         if (val < 0)
1318                 return -EINVAL;
1319
1320         err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1321         if (err)
1322                 return err;
1323         return zd1201_mac_reset(zd);
1324 }
1325
1326 static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1327     struct iw_param *rts, char *extra)
1328 {
1329         struct zd1201 *zd = netdev_priv(dev);
1330         short rtst;
1331         int err;
1332
1333         err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1334         if (err)
1335                 return err;
1336         rts->value = rtst;
1337         rts->disabled = (rts->value == ZD1201_RTSMAX);
1338         rts->fixed = 1;
1339
1340         return 0;
1341 }
1342
1343 static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1344     struct iw_param *frag, char *extra)
1345 {
1346         struct zd1201 *zd = netdev_priv(dev);
1347         int err;
1348         short val = frag->value;
1349
1350         if (frag->disabled || !frag->fixed)
1351                 val = ZD1201_FRAGMAX;
1352         if (val > ZD1201_FRAGMAX)
1353                 return -EINVAL;
1354         if (val < ZD1201_FRAGMIN)
1355                 return -EINVAL;
1356         if (val & 1)
1357                 return -EINVAL;
1358         err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1359         if (err)
1360                 return err;
1361         return zd1201_mac_reset(zd);
1362 }
1363
1364 static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1365     struct iw_param *frag, char *extra)
1366 {
1367         struct zd1201 *zd = netdev_priv(dev);
1368         short fragt;
1369         int err;
1370
1371         err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1372         if (err)
1373                 return err;
1374         frag->value = fragt;
1375         frag->disabled = (frag->value == ZD1201_FRAGMAX);
1376         frag->fixed = 1;
1377
1378         return 0;
1379 }
1380
1381 static int zd1201_set_retry(struct net_device *dev,
1382     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1383 {
1384         return 0;
1385 }
1386
1387 static int zd1201_get_retry(struct net_device *dev,
1388     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1389 {
1390         return 0;
1391 }
1392
1393 static int zd1201_set_encode(struct net_device *dev,
1394     struct iw_request_info *info, struct iw_point *erq, char *key)
1395 {
1396         struct zd1201 *zd = netdev_priv(dev);
1397         short i;
1398         int err, rid;
1399
1400         if (erq->length > ZD1201_MAXKEYLEN)
1401                 return -EINVAL;
1402
1403         i = (erq->flags & IW_ENCODE_INDEX)-1;
1404         if (i == -1) {
1405                 err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1406                 if (err)
1407                         return err;
1408         } else {
1409                 err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1410                 if (err)
1411                         return err;
1412         }
1413
1414         if (i < 0 || i >= ZD1201_NUMKEYS)
1415                 return -EINVAL;
1416
1417         rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1418         err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1419         if (err)
1420                 return err;
1421         zd->encode_keylen[i] = erq->length;
1422         memcpy(zd->encode_keys[i], key, erq->length);
1423
1424         i=0;
1425         if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1426                 i |= 0x01;
1427                 zd->encode_enabled = 1;
1428         } else
1429                 zd->encode_enabled = 0;
1430         if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1431                 i |= 0x02;
1432                 zd->encode_restricted = 1;
1433         } else
1434                 zd->encode_restricted = 0;
1435         err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1436         if (err)
1437                 return err;
1438
1439         if (zd->encode_enabled)
1440                 i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1441         else
1442                 i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1443         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1444         if (err)
1445                 return err;
1446
1447         return zd1201_mac_reset(zd);
1448 }
1449
1450 static int zd1201_get_encode(struct net_device *dev,
1451     struct iw_request_info *info, struct iw_point *erq, char *key)
1452 {
1453         struct zd1201 *zd = netdev_priv(dev);
1454         short i;
1455         int err;
1456
1457         if (zd->encode_enabled)
1458                 erq->flags = IW_ENCODE_ENABLED;
1459         else
1460                 erq->flags = IW_ENCODE_DISABLED;
1461         if (zd->encode_restricted)
1462                 erq->flags |= IW_ENCODE_RESTRICTED;
1463         else
1464                 erq->flags |= IW_ENCODE_OPEN;
1465
1466         i = (erq->flags & IW_ENCODE_INDEX) -1;
1467         if (i == -1) {
1468                 err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1469                 if (err)
1470                         return err;
1471         }
1472         if (i<0 || i>= ZD1201_NUMKEYS)
1473                 return -EINVAL;
1474
1475         erq->flags |= i+1;
1476
1477         erq->length = zd->encode_keylen[i];
1478         memcpy(key, zd->encode_keys[i], erq->length);
1479
1480         return 0;
1481 }
1482
1483 static int zd1201_set_power(struct net_device *dev,
1484     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1485 {
1486         struct zd1201 *zd = netdev_priv(dev);
1487         short enabled, duration, level;
1488         int err;
1489
1490         enabled = vwrq->disabled ? 0 : 1;
1491         if (enabled) {
1492                 if (vwrq->flags & IW_POWER_PERIOD) {
1493                         duration = vwrq->value;
1494                         err = zd1201_setconfig16(zd,
1495                             ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1496                         if (err)
1497                                 return err;
1498                         goto out;
1499                 }
1500                 if (vwrq->flags & IW_POWER_TIMEOUT) {
1501                         err = zd1201_getconfig16(zd,
1502                             ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1503                         if (err)
1504                                 return err;
1505                         level = vwrq->value * 4 / duration;
1506                         if (level > 4)
1507                                 level = 4;
1508                         if (level < 0)
1509                                 level = 0;
1510                         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1511                             level);
1512                         if (err)
1513                                 return err;
1514                         goto out;
1515                 }
1516                 return -EINVAL;
1517         }
1518 out:
1519         return zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1520 }
1521
1522 static int zd1201_get_power(struct net_device *dev,
1523     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1524 {
1525         struct zd1201 *zd = netdev_priv(dev);
1526         short enabled, level, duration;
1527         int err;
1528
1529         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1530         if (err)
1531                 return err;
1532         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1533         if (err)
1534                 return err;
1535         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1536         if (err)
1537                 return err;
1538         vwrq->disabled = enabled ? 0 : 1;
1539         if (vwrq->flags & IW_POWER_TYPE) {
1540                 if (vwrq->flags & IW_POWER_PERIOD) {
1541                         vwrq->value = duration;
1542                         vwrq->flags = IW_POWER_PERIOD;
1543                 } else {
1544                         vwrq->value = duration * level / 4;
1545                         vwrq->flags = IW_POWER_TIMEOUT;
1546                 }
1547         }
1548         if (vwrq->flags & IW_POWER_MODE) {
1549                 if (enabled && level)
1550                         vwrq->flags = IW_POWER_UNICAST_R;
1551                 else
1552                         vwrq->flags = IW_POWER_ALL_R;
1553         }
1554
1555         return 0;
1556 }
1557
1558
1559 static const iw_handler zd1201_iw_handler[] =
1560 {
1561         (iw_handler) zd1201_config_commit,      /* SIOCSIWCOMMIT */
1562         (iw_handler) zd1201_get_name,           /* SIOCGIWNAME */
1563         (iw_handler) NULL,                      /* SIOCSIWNWID */
1564         (iw_handler) NULL,                      /* SIOCGIWNWID */
1565         (iw_handler) zd1201_set_freq,           /* SIOCSIWFREQ */
1566         (iw_handler) zd1201_get_freq,           /* SIOCGIWFREQ */
1567         (iw_handler) zd1201_set_mode,           /* SIOCSIWMODE */
1568         (iw_handler) zd1201_get_mode,           /* SIOCGIWMODE */
1569         (iw_handler) NULL,                      /* SIOCSIWSENS */
1570         (iw_handler) NULL,                      /* SIOCGIWSENS */
1571         (iw_handler) NULL,                      /* SIOCSIWRANGE */
1572         (iw_handler) zd1201_get_range,           /* SIOCGIWRANGE */
1573         (iw_handler) NULL,                      /* SIOCSIWPRIV */
1574         (iw_handler) NULL,                      /* SIOCGIWPRIV */
1575         (iw_handler) NULL,                      /* SIOCSIWSTATS */
1576         (iw_handler) NULL,                      /* SIOCGIWSTATS */
1577         (iw_handler) NULL,                      /* SIOCSIWSPY */
1578         (iw_handler) NULL,                      /* SIOCGIWSPY */
1579         (iw_handler) NULL,                      /* -- hole -- */
1580         (iw_handler) NULL,                      /* -- hole -- */
1581         (iw_handler) NULL/*zd1201_set_wap*/,            /* SIOCSIWAP */
1582         (iw_handler) zd1201_get_wap,            /* SIOCGIWAP */
1583         (iw_handler) NULL,                      /* -- hole -- */
1584         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
1585         (iw_handler) zd1201_set_scan,           /* SIOCSIWSCAN */
1586         (iw_handler) zd1201_get_scan,           /* SIOCGIWSCAN */
1587         (iw_handler) zd1201_set_essid,          /* SIOCSIWESSID */
1588         (iw_handler) zd1201_get_essid,          /* SIOCGIWESSID */
1589         (iw_handler) NULL,                      /* SIOCSIWNICKN */
1590         (iw_handler) zd1201_get_nick,           /* SIOCGIWNICKN */
1591         (iw_handler) NULL,                      /* -- hole -- */
1592         (iw_handler) NULL,                      /* -- hole -- */
1593         (iw_handler) zd1201_set_rate,           /* SIOCSIWRATE */
1594         (iw_handler) zd1201_get_rate,           /* SIOCGIWRATE */
1595         (iw_handler) zd1201_set_rts,            /* SIOCSIWRTS */
1596         (iw_handler) zd1201_get_rts,            /* SIOCGIWRTS */
1597         (iw_handler) zd1201_set_frag,           /* SIOCSIWFRAG */
1598         (iw_handler) zd1201_get_frag,           /* SIOCGIWFRAG */
1599         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
1600         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
1601         (iw_handler) zd1201_set_retry,          /* SIOCSIWRETRY */
1602         (iw_handler) zd1201_get_retry,          /* SIOCGIWRETRY */
1603         (iw_handler) zd1201_set_encode,         /* SIOCSIWENCODE */
1604         (iw_handler) zd1201_get_encode,         /* SIOCGIWENCODE */
1605         (iw_handler) zd1201_set_power,          /* SIOCSIWPOWER */
1606         (iw_handler) zd1201_get_power,          /* SIOCGIWPOWER */
1607 };
1608
1609 static int zd1201_set_hostauth(struct net_device *dev,
1610     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1611 {
1612         struct zd1201 *zd = netdev_priv(dev);
1613
1614         if (!zd->ap)
1615                 return -EOPNOTSUPP;
1616
1617         return zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1618 }
1619
1620 static int zd1201_get_hostauth(struct net_device *dev,
1621     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1622 {
1623         struct zd1201 *zd = netdev_priv(dev);
1624         short hostauth;
1625         int err;
1626
1627         if (!zd->ap)
1628                 return -EOPNOTSUPP;
1629
1630         err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1631         if (err)
1632                 return err;
1633         rrq->value = hostauth;
1634         rrq->fixed = 1;
1635
1636         return 0;
1637 }
1638
1639 static int zd1201_auth_sta(struct net_device *dev,
1640     struct iw_request_info *info, struct sockaddr *sta, char *extra)
1641 {
1642         struct zd1201 *zd = netdev_priv(dev);
1643         unsigned char buffer[10];
1644
1645         if (!zd->ap)
1646                 return -EOPNOTSUPP;
1647
1648         memcpy(buffer, sta->sa_data, ETH_ALEN);
1649         *(short*)(buffer+6) = 0;        /* 0==success, 1==failure */
1650         *(short*)(buffer+8) = 0;
1651
1652         return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1653 }
1654
1655 static int zd1201_set_maxassoc(struct net_device *dev,
1656     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1657 {
1658         struct zd1201 *zd = netdev_priv(dev);
1659         int err;
1660
1661         if (!zd->ap)
1662                 return -EOPNOTSUPP;
1663
1664         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1665         if (err)
1666                 return err;
1667         return 0;
1668 }
1669
1670 static int zd1201_get_maxassoc(struct net_device *dev,
1671     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1672 {
1673         struct zd1201 *zd = netdev_priv(dev);
1674         short maxassoc;
1675         int err;
1676
1677         if (!zd->ap)
1678                 return -EOPNOTSUPP;
1679
1680         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1681         if (err)
1682                 return err;
1683         rrq->value = maxassoc;
1684         rrq->fixed = 1;
1685
1686         return 0;
1687 }
1688
1689 static const iw_handler zd1201_private_handler[] = {
1690         (iw_handler) zd1201_set_hostauth,       /* ZD1201SIWHOSTAUTH */
1691         (iw_handler) zd1201_get_hostauth,       /* ZD1201GIWHOSTAUTH */
1692         (iw_handler) zd1201_auth_sta,           /* ZD1201SIWAUTHSTA */
1693         (iw_handler) NULL,                      /* nothing to get */
1694         (iw_handler) zd1201_set_maxassoc,       /* ZD1201SIMAXASSOC */
1695         (iw_handler) zd1201_get_maxassoc,       /* ZD1201GIMAXASSOC */
1696 };
1697
1698 static const struct iw_priv_args zd1201_private_args[] = {
1699         { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1700             IW_PRIV_TYPE_NONE, "sethostauth" },
1701         { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1702             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1703         { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1704             IW_PRIV_TYPE_NONE, "authstation" },
1705         { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1706             IW_PRIV_TYPE_NONE, "setmaxassoc" },
1707         { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1708             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1709 };
1710
1711 static const struct iw_handler_def zd1201_iw_handlers = {
1712         .num_standard           = ARRAY_SIZE(zd1201_iw_handler),
1713         .num_private            = ARRAY_SIZE(zd1201_private_handler),
1714         .num_private_args       = ARRAY_SIZE(zd1201_private_args),
1715         .standard               = (iw_handler *)zd1201_iw_handler,
1716         .private                = (iw_handler *)zd1201_private_handler,
1717         .private_args           = (struct iw_priv_args *) zd1201_private_args,
1718         .get_wireless_stats     = zd1201_get_wireless_stats,
1719 };
1720
1721 static const struct net_device_ops zd1201_netdev_ops = {
1722         .ndo_open               = zd1201_net_open,
1723         .ndo_stop               = zd1201_net_stop,
1724         .ndo_start_xmit         = zd1201_hard_start_xmit,
1725         .ndo_tx_timeout         = zd1201_tx_timeout,
1726         .ndo_set_rx_mode        = zd1201_set_multicast,
1727         .ndo_set_mac_address    = zd1201_set_mac_address,
1728         .ndo_change_mtu         = eth_change_mtu,
1729         .ndo_validate_addr      = eth_validate_addr,
1730 };
1731
1732 static int zd1201_probe(struct usb_interface *interface,
1733                         const struct usb_device_id *id)
1734 {
1735         struct zd1201 *zd;
1736         struct net_device *dev;
1737         struct usb_device *usb;
1738         int err;
1739         short porttype;
1740         char buf[IW_ESSID_MAX_SIZE+2];
1741
1742         usb = interface_to_usbdev(interface);
1743
1744         dev = alloc_etherdev(sizeof(*zd));
1745         if (!dev)
1746                 return -ENOMEM;
1747         zd = netdev_priv(dev);
1748         zd->dev = dev;
1749
1750         zd->ap = ap;
1751         zd->usb = usb;
1752         zd->removed = 0;
1753         init_waitqueue_head(&zd->rxdataq);
1754         INIT_HLIST_HEAD(&zd->fraglist);
1755
1756         err = zd1201_fw_upload(usb, zd->ap);
1757         if (err) {
1758                 dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
1759                 goto err_zd;
1760         }
1761
1762         zd->endp_in = 1;
1763         zd->endp_out = 1;
1764         zd->endp_out2 = 2;
1765         zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1766         zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1767         if (!zd->rx_urb || !zd->tx_urb)
1768                 goto err_zd;
1769
1770         mdelay(100);
1771         err = zd1201_drvr_start(zd);
1772         if (err)
1773                 goto err_zd;
1774
1775         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
1776         if (err)
1777                 goto err_start;
1778
1779         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
1780             ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
1781         if (err)
1782                 goto err_start;
1783
1784         dev->netdev_ops = &zd1201_netdev_ops;
1785         dev->wireless_handlers = &zd1201_iw_handlers;
1786         dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
1787         strcpy(dev->name, "wlan%d");
1788
1789         err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR,
1790             dev->dev_addr, dev->addr_len);
1791         if (err)
1792                 goto err_start;
1793
1794         /* Set wildcard essid to match zd->essid */
1795         *(__le16 *)buf = cpu_to_le16(0);
1796         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
1797             IW_ESSID_MAX_SIZE+2, 1);
1798         if (err)
1799                 goto err_start;
1800
1801         if (zd->ap)
1802                 porttype = ZD1201_PORTTYPE_AP;
1803         else
1804                 porttype = ZD1201_PORTTYPE_BSS;
1805         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1806         if (err)
1807                 goto err_start;
1808
1809         SET_NETDEV_DEV(dev, &usb->dev);
1810
1811         err = register_netdev(dev);
1812         if (err)
1813                 goto err_start;
1814         dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
1815             dev->name);
1816
1817         usb_set_intfdata(interface, zd);
1818         zd1201_enable(zd);      /* zd1201 likes to startup enabled, */
1819         zd1201_disable(zd);     /* interfering with all the wifis in range */
1820         return 0;
1821
1822 err_start:
1823         /* Leave the device in reset state */
1824         zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
1825 err_zd:
1826         usb_free_urb(zd->tx_urb);
1827         usb_free_urb(zd->rx_urb);
1828         free_netdev(dev);
1829         return err;
1830 }
1831
1832 static void zd1201_disconnect(struct usb_interface *interface)
1833 {
1834         struct zd1201 *zd = usb_get_intfdata(interface);
1835         struct hlist_node *node2;
1836         struct zd1201_frag *frag;
1837
1838         if (!zd)
1839                 return;
1840         usb_set_intfdata(interface, NULL);
1841
1842         hlist_for_each_entry_safe(frag, node2, &zd->fraglist, fnode) {
1843                 hlist_del_init(&frag->fnode);
1844                 kfree_skb(frag->skb);
1845                 kfree(frag);
1846         }
1847
1848         if (zd->tx_urb) {
1849                 usb_kill_urb(zd->tx_urb);
1850                 usb_free_urb(zd->tx_urb);
1851         }
1852         if (zd->rx_urb) {
1853                 usb_kill_urb(zd->rx_urb);
1854                 usb_free_urb(zd->rx_urb);
1855         }
1856
1857         if (zd->dev) {
1858                 unregister_netdev(zd->dev);
1859                 free_netdev(zd->dev);
1860         }
1861 }
1862
1863 #ifdef CONFIG_PM
1864
1865 static int zd1201_suspend(struct usb_interface *interface,
1866                            pm_message_t message)
1867 {
1868         struct zd1201 *zd = usb_get_intfdata(interface);
1869
1870         netif_device_detach(zd->dev);
1871
1872         zd->was_enabled = zd->mac_enabled;
1873
1874         if (zd->was_enabled)
1875                 return zd1201_disable(zd);
1876         else
1877                 return 0;
1878 }
1879
1880 static int zd1201_resume(struct usb_interface *interface)
1881 {
1882         struct zd1201 *zd = usb_get_intfdata(interface);
1883
1884         if (!zd || !zd->dev)
1885                 return -ENODEV;
1886
1887         netif_device_attach(zd->dev);
1888
1889         if (zd->was_enabled)
1890                 return zd1201_enable(zd);
1891         else
1892                 return 0;
1893 }
1894
1895 #else
1896
1897 #define zd1201_suspend NULL
1898 #define zd1201_resume  NULL
1899
1900 #endif
1901
1902 static struct usb_driver zd1201_usb = {
1903         .name = "zd1201",
1904         .probe = zd1201_probe,
1905         .disconnect = zd1201_disconnect,
1906         .id_table = zd1201_table,
1907         .suspend = zd1201_suspend,
1908         .resume = zd1201_resume,
1909         .disable_hub_initiated_lpm = 1,
1910 };
1911
1912 module_usb_driver(zd1201_usb);