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 <net/iw_handler.h>
  21 #include <linux/string.h>
  22 #include <linux/if_arp.h>
  23 #include <linux/firmware.h>
  24 #include <net/ieee80211.h>
  25 #include "zd1201.h"
  26
  27 static struct usb_device_id zd1201_table[] = {
  28         {USB_DEVICE(0x0586, 0x3400)}, /* Peabird Wireless USB Adapter */
  29         {USB_DEVICE(0x0ace, 0x1201)}, /* ZyDAS ZD1201 Wireless USB Adapter */
  30         {USB_DEVICE(0x050d, 0x6051)}, /* Belkin F5D6051 usb  adapter */
  31         {USB_DEVICE(0x0db0, 0x6823)}, /* MSI UB11B usb  adapter */
  32         {USB_DEVICE(0x1044, 0x8005)}, /* GIGABYTE GN-WLBZ201 usb adapter */
  33         {}
  34 };
  35
  36 static int ap;  /* Are we an AP or a normal station? */
  37
  38 #define ZD1201_VERSION  "0.15"
  39
  40 MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>");
  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         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->dev = zd->dev;
 331                         skb->dev->last_rx = jiffies;
 332                         skb->protocol = eth_type_trans(skb, zd->dev);
 333                         zd->stats.rx_packets++;
 334                         zd->stats.rx_bytes += skb->len;
 335                         netif_rx(skb);
 336                         goto resubmit;
 337                 }
 338
 339                 if ((seq & IEEE80211_SCTL_FRAG) ||
 340                     (fc & IEEE80211_FCTL_MOREFRAGS)) {
 341                         struct zd1201_frag *frag = NULL;
 342                         char *ptr;
 343
 344                         if (datalen<14)
 345                                 goto resubmit;
 346                         if ((seq & IEEE80211_SCTL_FRAG) == 0) {
 347                                 frag = kmalloc(sizeof(*frag), GFP_ATOMIC);
 348                                 if (!frag)
 349                                         goto resubmit;
 350                                 skb = dev_alloc_skb(IEEE80211_DATA_LEN +14+2);
 351                                 if (!skb) {
 352                                         kfree(frag);
 353                                         goto resubmit;
 354                                 }
 355                                 frag->skb = skb;
 356                                 frag->seq = seq & IEEE80211_SCTL_SEQ;
 357                                 skb_reserve(skb, 2);
 358                                 memcpy(skb_put(skb, 12), &data[datalen-14], 12);
 359                                 memcpy(skb_put(skb, 2), &data[6], 2);
 360                                 memcpy(skb_put(skb, len), data+8, len);
 361                                 hlist_add_head(&frag->fnode, &zd->fraglist);
 362                                 goto resubmit;
 363                         }
 364                         hlist_for_each_entry(frag, node, &zd->fraglist, fnode)
 365                                 if (frag->seq == (seq&IEEE80211_SCTL_SEQ))
 366                                         break;
 367                         if (!frag)
 368                                 goto resubmit;
 369                         skb = frag->skb;
 370                         ptr = skb_put(skb, len);
 371                         if (ptr)
 372                                 memcpy(ptr, data+8, len);
 373                         if (fc & IEEE80211_FCTL_MOREFRAGS)
 374                                 goto resubmit;
 375                         hlist_del_init(&frag->fnode);
 376                         kfree(frag);
 377                 } else {
 378                         if (datalen<14)
 379                                 goto resubmit;
 380                         skb = dev_alloc_skb(len + 14 + 2);
 381                         if (!skb)
 382                                 goto resubmit;
 383                         skb_reserve(skb, 2);
 384                         memcpy(skb_put(skb, 12), &data[datalen-14], 12);
 385                         memcpy(skb_put(skb, 2), &data[6], 2);
 386                         memcpy(skb_put(skb, len), data+8, len);
 387                 }
 388                 skb->dev = zd->dev;
 389                 skb->dev->last_rx = jiffies;
 390                 skb->protocol = eth_type_trans(skb, zd->dev);
 391                 zd->stats.rx_packets++;
 392                 zd->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         return;
 411 }
 412
 413 static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
 414         unsigned int riddatalen)
 415 {
 416         int err;
 417         int i = 0;
 418         int code;
 419         int rid_fid;
 420         int length;
 421         unsigned char *pdata;
 422
 423         zd->rxdatas = 0;
 424         err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
 425         if (err)
 426                 return err;
 427
 428         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 429         if (!zd->rxlen)
 430                 return -EIO;
 431
 432         code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
 433         rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
 434         length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
 435         if (length > zd->rxlen)
 436                 length = zd->rxlen-6;
 437
 438         /* If access bit is not on, then error */
 439         if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
 440                 return -EINVAL;
 441
 442         /* Not enough buffer for allocating data */
 443         if (riddatalen != (length - 4)) {
 444                 dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
 445                     riddatalen, zd->rxlen, length, rid, rid_fid);
 446                 return -ENODATA;
 447         }
 448
 449         zd->rxdatas = 0;
 450         /* Issue SetRxRid commnd */
 451         err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
 452         if (err)
 453                 return err;
 454
 455         /* Receive RID record from resource packets */
 456         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 457         if (!zd->rxlen)
 458                 return -EIO;
 459
 460         if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
 461                 dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
 462                     zd->rxdata[zd->rxlen-1]);
 463                 return -EINVAL;
 464         }
 465
 466         /* Set the data pointer and received data length */
 467         pdata = zd->rxdata;
 468         length = zd->rxlen;
 469
 470         do {
 471                 int actual_length;
 472
 473                 actual_length = (length > 64) ? 64 : length;
 474
 475                 if (pdata[0] != 0x3) {
 476                         dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
 477                             pdata[0]);
 478                         return -EINVAL;
 479                 }
 480
 481                 if (actual_length != 64) {
 482                         /* Trim the last packet type byte */
 483                         actual_length--;
 484                 }
 485
 486                 /* Skip the 4 bytes header (RID length and RID) */
 487                 if (i == 0) {
 488                         pdata += 8;
 489                         actual_length -= 8;
 490                 } else {
 491                         pdata += 4;
 492                         actual_length -= 4;
 493                 }
 494
 495                 memcpy(riddata, pdata, actual_length);
 496                 riddata += actual_length;
 497                 pdata += actual_length;
 498                 length -= 64;
 499                 i++;
 500         } while (length > 0);
 501
 502         return 0;
 503 }
 504
 505 /*
 506  *      resreq:
 507  *              byte    type
 508  *              byte    sequence
 509  *              u16     reserved
 510  *              byte    data[12]
 511  *      total: 16
 512  */
 513 static int zd1201_setconfig(struct zd1201 *zd, int rid, void *buf, int len, int wait)
 514 {
 515         int err;
 516         unsigned char *request;
 517         int reqlen;
 518         char seq=0;
 519         struct urb *urb;
 520         gfp_t gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
 521
 522         len += 4;                       /* first 4 are for header */
 523
 524         zd->rxdatas = 0;
 525         zd->rxlen = 0;
 526         for (seq=0; len > 0; seq++) {
 527                 request = kmalloc(16, gfp_mask);
 528                 if (!request)
 529                         return -ENOMEM;
 530                 urb = usb_alloc_urb(0, gfp_mask);
 531                 if (!urb) {
 532                         kfree(request);
 533                         return -ENOMEM;
 534                 }
 535                 memset(request, 0, 16);
 536                 reqlen = len>12 ? 12 : len;
 537                 request[0] = ZD1201_USB_RESREQ;
 538                 request[1] = seq;
 539                 request[2] = 0;
 540                 request[3] = 0;
 541                 if (request[1] == 0) {
 542                         /* add header */
 543                         *(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
 544                         *(__le16*)&request[6] = cpu_to_le16(rid);
 545                         memcpy(request+8, buf, reqlen-4);
 546                         buf += reqlen-4;
 547                 } else {
 548                         memcpy(request+4, buf, reqlen);
 549                         buf += reqlen;
 550                 }
 551
 552                 len -= reqlen;
 553
 554                 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
 555                     zd->endp_out2), request, 16, zd1201_usbfree, zd);
 556                 err = usb_submit_urb(urb, gfp_mask);
 557                 if (err)
 558                         goto err;
 559         }
 560
 561         request = kmalloc(16, gfp_mask);
 562         if (!request)
 563                 return -ENOMEM;
 564         urb = usb_alloc_urb(0, gfp_mask);
 565         if (!urb) {
 566                 kfree(request);
 567                 return -ENOMEM;
 568         }
 569         *((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
 570         *((__le16*)&request[4]) =
 571             cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
 572         *((__le16*)&request[6]) = cpu_to_le16(rid);
 573         *((__le16*)&request[8]) = cpu_to_le16(0);
 574         *((__le16*)&request[10]) = cpu_to_le16(0);
 575         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 576              request, 16, zd1201_usbfree, zd);
 577         err = usb_submit_urb(urb, gfp_mask);
 578         if (err)
 579                 goto err;
 580
 581         if (wait) {
 582                 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 583                 if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
 584                         dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
 585                 }
 586         }
 587
 588         return 0;
 589 err:
 590         kfree(request);
 591         usb_free_urb(urb);
 592         return err;
 593 }
 594
 595 static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
 596 {
 597         int err;
 598         __le16 zdval;
 599
 600         err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
 601         if (err)
 602                 return err;
 603         *val = le16_to_cpu(zdval);
 604         return 0;
 605 }
 606
 607 static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
 608 {
 609         __le16 zdval = cpu_to_le16(val);
 610         return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
 611 }
 612
 613 static int zd1201_drvr_start(struct zd1201 *zd)
 614 {
 615         int err, i;
 616         short max;
 617         __le16 zdmax;
 618         unsigned char *buffer;
 619
 620         buffer = kzalloc(ZD1201_RXSIZE, GFP_KERNEL);
 621         if (!buffer)
 622                 return -ENOMEM;
 623
 624         usb_fill_bulk_urb(zd->rx_urb, zd->usb,
 625             usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
 626             zd1201_usbrx, zd);
 627
 628         err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
 629         if (err)
 630                 goto err_buffer;
 631
 632         err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
 633         if (err)
 634                 goto err_urb;
 635
 636         err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
 637             sizeof(__le16));
 638         if (err)
 639                 goto err_urb;
 640
 641         max = le16_to_cpu(zdmax);
 642         for (i=0; i<max; i++) {
 643                 err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
 644                 if (err)
 645                         goto err_urb;
 646         }
 647
 648         return 0;
 649
 650 err_urb:
 651         usb_kill_urb(zd->rx_urb);
 652         return err;
 653 err_buffer:
 654         kfree(buffer);
 655         return err;
 656 }
 657
 658 /*      Magic alert: The firmware doesn't seem to like the MAC state being
 659  *      toggled in promisc (aka monitor) mode.
 660  *      (It works a number of times, but will halt eventually)
 661  *      So we turn it of before disabling and on after enabling if needed.
 662  */
 663 static int zd1201_enable(struct zd1201 *zd)
 664 {
 665         int err;
 666
 667         if (zd->mac_enabled)
 668                 return 0;
 669
 670         err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
 671         if (!err)
 672                 zd->mac_enabled = 1;
 673
 674         if (zd->monitor)
 675                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
 676
 677         return err;
 678 }
 679
 680 static int zd1201_disable(struct zd1201 *zd)
 681 {
 682         int err;
 683
 684         if (!zd->mac_enabled)
 685                 return 0;
 686         if (zd->monitor) {
 687                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 688                 if (err)
 689                         return err;
 690         }
 691
 692         err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
 693         if (!err)
 694                 zd->mac_enabled = 0;
 695         return err;
 696 }
 697
 698 static int zd1201_mac_reset(struct zd1201 *zd)
 699 {
 700         if (!zd->mac_enabled)
 701                 return 0;
 702         zd1201_disable(zd);
 703         return zd1201_enable(zd);
 704 }
 705
 706 static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
 707 {
 708         int err, val;
 709         char buf[IW_ESSID_MAX_SIZE+2];
 710
 711         err = zd1201_disable(zd);
 712         if (err)
 713                 return err;
 714
 715         val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
 716         val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
 717         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
 718         if (err)
 719                 return err;
 720
 721         *(__le16 *)buf = cpu_to_le16(essidlen);
 722         memcpy(buf+2, essid, essidlen);
 723         if (!zd->ap) {  /* Normal station */
 724                 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
 725                     IW_ESSID_MAX_SIZE+2, 1);
 726                 if (err)
 727                         return err;
 728         } else {        /* AP */
 729                 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
 730                     IW_ESSID_MAX_SIZE+2, 1);
 731                 if (err)
 732                         return err;
 733         }
 734
 735         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 736             zd->dev->dev_addr, zd->dev->addr_len, 1);
 737         if (err)
 738                 return err;
 739
 740         err = zd1201_enable(zd);
 741         if (err)
 742                 return err;
 743
 744         msleep(100);
 745         return 0;
 746 }
 747
 748 static int zd1201_net_open(struct net_device *dev)
 749 {
 750         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 751
 752         /* Start MAC with wildcard if no essid set */
 753         if (!zd->mac_enabled)
 754                 zd1201_join(zd, zd->essid, zd->essidlen);
 755         netif_start_queue(dev);
 756
 757         return 0;
 758 }
 759
 760 static int zd1201_net_stop(struct net_device *dev)
 761 {
 762         netif_stop_queue(dev);
 763         return 0;
 764 }
 765
 766 /*
 767         RFC 1042 encapsulates Ethernet frames in 802.11 frames
 768         by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
 769         (0x00, 0x00, 0x00). Zd requires an additional padding, copy
 770         of ethernet addresses, length of the standard RFC 1042 packet
 771         and a command byte (which is nul for tx).
 772
 773         tx frame (from Wlan NG):
 774         RFC 1042:
 775                 llc             0xAA 0xAA 0x03 (802.2 LLC)
 776                 snap            0x00 0x00 0x00 (Ethernet encapsulated)
 777                 type            2 bytes, Ethernet type field
 778                 payload         (minus eth header)
 779         Zydas specific:
 780                 padding         1B if (skb->len+8+1)%64==0
 781                 Eth MAC addr    12 bytes, Ethernet MAC addresses
 782                 length          2 bytes, RFC 1042 packet length
 783                                 (llc+snap+type+payload)
 784                 zd              1 null byte, zd1201 packet type
 785  */
 786 static int zd1201_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 787 {
 788         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 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                 zd->stats.tx_dropped++;
 795                 kfree_skb(skb);
 796                 return 0;
 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         memcpy(txbuf+6, skb->data+12, skb->len-12);
 813         if (pad)
 814                 txbuf[skb->len-12+6]=0;
 815         memcpy(txbuf+skb->len-12+6+pad, skb->data, 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                 zd->stats.tx_errors++;
 825                 netif_start_queue(dev);
 826                 return err;
 827         }
 828         zd->stats.tx_packets++;
 829         zd->stats.tx_bytes += skb->len;
 830         dev->trans_start = jiffies;
 831         kfree_skb(skb);
 832
 833         return 0;
 834 }
 835
 836 static void zd1201_tx_timeout(struct net_device *dev)
 837 {
 838         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 839
 840         if (!zd)
 841                 return;
 842         dev_warn(&zd->usb->dev, "%s: TX timeout, shooting down urb\n",
 843             dev->name);
 844         usb_unlink_urb(zd->tx_urb);
 845         zd->stats.tx_errors++;
 846         /* Restart the timeout to quiet the watchdog: */
 847         dev->trans_start = jiffies;
 848 }
 849
 850 static int zd1201_set_mac_address(struct net_device *dev, void *p)
 851 {
 852         struct sockaddr *addr = p;
 853         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 854         int err;
 855
 856         if (!zd)
 857                 return -ENODEV;
 858
 859         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 860             addr->sa_data, dev->addr_len, 1);
 861         if (err)
 862                 return err;
 863         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
 864
 865         return zd1201_mac_reset(zd);
 866 }
 867
 868 static struct net_device_stats *zd1201_get_stats(struct net_device *dev)
 869 {
 870         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 871
 872         return &zd->stats;
 873 }
 874
 875 static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
 876 {
 877         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 878
 879         return &zd->iwstats;
 880 }
 881
 882 static void zd1201_set_multicast(struct net_device *dev)
 883 {
 884         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 885         struct dev_mc_list *mc = dev->mc_list;
 886         unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
 887         int i;
 888
 889         if (dev->mc_count > ZD1201_MAXMULTI)
 890                 return;
 891
 892         for (i=0; i<dev->mc_count; i++) {
 893                 memcpy(reqbuf+i*ETH_ALEN, mc->dmi_addr, ETH_ALEN);
 894                 mc = mc->next;
 895         }
 896         zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
 897             dev->mc_count*ETH_ALEN, 0);
 898
 899 }
 900
 901 static int zd1201_config_commit(struct net_device *dev,
 902     struct iw_request_info *info, struct iw_point *data, char *essid)
 903 {
 904         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 905
 906         return zd1201_mac_reset(zd);
 907 }
 908
 909 static int zd1201_get_name(struct net_device *dev,
 910     struct iw_request_info *info, char *name, char *extra)
 911 {
 912         strcpy(name, "IEEE 802.11b");
 913         return 0;
 914 }
 915
 916 static int zd1201_set_freq(struct net_device *dev,
 917     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 918 {
 919         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 920         short channel = 0;
 921         int err;
 922
 923         if (freq->e == 0)
 924                 channel = freq->m;
 925         else {
 926                 if (freq->m >= 2482)
 927                         channel = 14;
 928                 if (freq->m >= 2407)
 929                         channel = (freq->m-2407)/5;
 930         }
 931
 932         err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
 933         if (err)
 934                 return err;
 935
 936         zd1201_mac_reset(zd);
 937
 938         return 0;
 939 }
 940
 941 static int zd1201_get_freq(struct net_device *dev,
 942     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 943 {
 944         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 945         short channel;
 946         int err;
 947
 948         err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
 949         if (err)
 950                 return err;
 951         freq->e = 0;
 952         freq->m = channel;
 953
 954         return 0;
 955 }
 956
 957 static int zd1201_set_mode(struct net_device *dev,
 958     struct iw_request_info *info, __u32 *mode, char *extra)
 959 {
 960         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 961         short porttype, monitor = 0;
 962         unsigned char buffer[IW_ESSID_MAX_SIZE+2];
 963         int err;
 964
 965         if (zd->ap) {
 966                 if (*mode != IW_MODE_MASTER)
 967                         return -EINVAL;
 968                 return 0;
 969         }
 970
 971         err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 972         if (err)
 973                 return err;
 974         zd->dev->type = ARPHRD_ETHER;
 975         switch(*mode) {
 976                 case IW_MODE_MONITOR:
 977                         monitor = 1;
 978                         zd->dev->type = ARPHRD_IEEE80211;
 979                         /* Make sure we are no longer associated with by
 980                            setting an 'impossible' essid.
 981                            (otherwise we mess up firmware)
 982                          */
 983                         zd1201_join(zd, "\0-*#\0", 5);
 984                         /* Put port in pIBSS */
 985                 case 8: /* No pseudo-IBSS in wireless extensions (yet) */
 986                         porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
 987                         break;
 988                 case IW_MODE_ADHOC:
 989                         porttype = ZD1201_PORTTYPE_IBSS;
 990                         break;
 991                 case IW_MODE_INFRA:
 992                         porttype = ZD1201_PORTTYPE_BSS;
 993                         break;
 994                 default:
 995                         return -EINVAL;
 996         }
 997
 998         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
 999         if (err)
1000                 return err;
1001         if (zd->monitor && !monitor) {
1002                         zd1201_disable(zd);
1003                         *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
1004                         memcpy(buffer+2, zd->essid, zd->essidlen);
1005                         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
1006                             buffer, IW_ESSID_MAX_SIZE+2, 1);
1007                         if (err)
1008                                 return err;
1009         }
1010         zd->monitor = monitor;
1011         /* If monitor mode is set we don't actually turn it on here since it
1012          * is done during mac reset anyway (see zd1201_mac_enable).
1013          */
1014         zd1201_mac_reset(zd);
1015
1016         return 0;
1017 }
1018
1019 static int zd1201_get_mode(struct net_device *dev,
1020     struct iw_request_info *info, __u32 *mode, char *extra)
1021 {
1022         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1023         short porttype;
1024         int err;
1025
1026         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1027         if (err)
1028                 return err;
1029         switch(porttype) {
1030                 case ZD1201_PORTTYPE_IBSS:
1031                         *mode = IW_MODE_ADHOC;
1032                         break;
1033                 case ZD1201_PORTTYPE_BSS:
1034                         *mode = IW_MODE_INFRA;
1035                         break;
1036                 case ZD1201_PORTTYPE_WDS:
1037                         *mode = IW_MODE_REPEAT;
1038                         break;
1039                 case ZD1201_PORTTYPE_PSEUDOIBSS:
1040                         *mode = 8;/* No Pseudo-IBSS... */
1041                         break;
1042                 case ZD1201_PORTTYPE_AP:
1043                         *mode = IW_MODE_MASTER;
1044                         break;
1045                 default:
1046                         dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1047                             porttype);
1048                         *mode = IW_MODE_AUTO;
1049         }
1050         if (zd->monitor)
1051                 *mode = IW_MODE_MONITOR;
1052
1053         return 0;
1054 }
1055
1056 static int zd1201_get_range(struct net_device *dev,
1057     struct iw_request_info *info, struct iw_point *wrq, char *extra)
1058 {
1059         struct iw_range *range = (struct iw_range *)extra;
1060
1061         wrq->length = sizeof(struct iw_range);
1062         memset(range, 0, sizeof(struct iw_range));
1063         range->we_version_compiled = WIRELESS_EXT;
1064         range->we_version_source = WIRELESS_EXT;
1065
1066         range->max_qual.qual = 128;
1067         range->max_qual.level = 128;
1068         range->max_qual.noise = 128;
1069         range->max_qual.updated = 7;
1070
1071         range->encoding_size[0] = 5;
1072         range->encoding_size[1] = 13;
1073         range->num_encoding_sizes = 2;
1074         range->max_encoding_tokens = ZD1201_NUMKEYS;
1075
1076         range->num_bitrates = 4;
1077         range->bitrate[0] = 1000000;
1078         range->bitrate[1] = 2000000;
1079         range->bitrate[2] = 5500000;
1080         range->bitrate[3] = 11000000;
1081
1082         range->min_rts = 0;
1083         range->min_frag = ZD1201_FRAGMIN;
1084         range->max_rts = ZD1201_RTSMAX;
1085         range->min_frag = ZD1201_FRAGMAX;
1086
1087         return 0;
1088 }
1089
1090 /*      Little bit of magic here: we only get the quality if we poll
1091  *      for it, and we never get an actual request to trigger such
1092  *      a poll. Therefore we 'assume' that the user will soon ask for
1093  *      the stats after asking the bssid.
1094  */
1095 static int zd1201_get_wap(struct net_device *dev,
1096     struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1097 {
1098         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1099         unsigned char buffer[6];
1100
1101         if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1102                 /* Unfortunately the quality and noise reported is useless.
1103                    they seem to be accumulators that increase until you
1104                    read them, unless we poll on a fixed interval we can't
1105                    use them
1106                  */
1107                 /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1108                 zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1109                 /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1110                 zd->iwstats.qual.updated = 2;
1111         }
1112
1113         return zd1201_getconfig(zd, ZD1201_RID_CURRENTBSSID, ap_addr->sa_data, 6);
1114 }
1115
1116 static int zd1201_set_scan(struct net_device *dev,
1117     struct iw_request_info *info, struct iw_point *srq, char *extra)
1118 {
1119         /* We do everything in get_scan */
1120         return 0;
1121 }
1122
1123 static int zd1201_get_scan(struct net_device *dev,
1124     struct iw_request_info *info, struct iw_point *srq, char *extra)
1125 {
1126         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1127         int err, i, j, enabled_save;
1128         struct iw_event iwe;
1129         char *cev = extra;
1130         char *end_buf = extra + IW_SCAN_MAX_DATA;
1131
1132         /* No scanning in AP mode */
1133         if (zd->ap)
1134                 return -EOPNOTSUPP;
1135
1136         /* Scan doesn't seem to work if disabled */
1137         enabled_save = zd->mac_enabled;
1138         zd1201_enable(zd);
1139
1140         zd->rxdatas = 0;
1141         err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE,
1142              ZD1201_INQ_SCANRESULTS, 0, 0);
1143         if (err)
1144                 return err;
1145
1146         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1147         if (!zd->rxlen)
1148                 return -EIO;
1149
1150         if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1151                 return -EIO;
1152
1153         for(i=8; i<zd->rxlen; i+=62) {
1154                 iwe.cmd = SIOCGIWAP;
1155                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1156                 memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1157                 cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_ADDR_LEN);
1158
1159                 iwe.cmd = SIOCGIWESSID;
1160                 iwe.u.data.length = zd->rxdata[i+16];
1161                 iwe.u.data.flags = 1;
1162                 cev = iwe_stream_add_point(cev, end_buf, &iwe, zd->rxdata+i+18);
1163
1164                 iwe.cmd = SIOCGIWMODE;
1165                 if (zd->rxdata[i+14]&0x01)
1166                         iwe.u.mode = IW_MODE_MASTER;
1167                 else
1168                         iwe.u.mode = IW_MODE_ADHOC;
1169                 cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_UINT_LEN);
1170
1171                 iwe.cmd = SIOCGIWFREQ;
1172                 iwe.u.freq.m = zd->rxdata[i+0];
1173                 iwe.u.freq.e = 0;
1174                 cev = iwe_stream_add_event(cev, end_buf, &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(cev, end_buf, &iwe,
1182                             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(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(cev, end_buf, &iwe, IW_EV_QUAL_LEN);
1199         }
1200
1201         if (!enabled_save)
1202                 zd1201_disable(zd);
1203
1204         srq->length = cev - extra;
1205         srq->flags = 0;
1206
1207         return 0;
1208 }
1209
1210 static int zd1201_set_essid(struct net_device *dev,
1211     struct iw_request_info *info, struct iw_point *data, char *essid)
1212 {
1213         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1214
1215         if (data->length > IW_ESSID_MAX_SIZE)
1216                 return -EINVAL;
1217         if (data->length < 1)
1218                 data->length = 1;
1219         zd->essidlen = data->length;
1220         memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1221         memcpy(zd->essid, essid, data->length);
1222         return zd1201_join(zd, zd->essid, zd->essidlen);
1223 }
1224
1225 static int zd1201_get_essid(struct net_device *dev,
1226     struct iw_request_info *info, struct iw_point *data, char *essid)
1227 {
1228         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1229
1230         memcpy(essid, zd->essid, zd->essidlen);
1231         data->flags = 1;
1232         data->length = zd->essidlen;
1233
1234         return 0;
1235 }
1236
1237 static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1238     struct iw_point *data, char *nick)
1239 {
1240         strcpy(nick, "zd1201");
1241         data->flags = 1;
1242         data->length = strlen(nick);
1243         return 0;
1244 }
1245
1246 static int zd1201_set_rate(struct net_device *dev,
1247     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1248 {
1249         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1250         short rate;
1251         int err;
1252
1253         switch (rrq->value) {
1254                 case 1000000:
1255                         rate = ZD1201_RATEB1;
1256                         break;
1257                 case 2000000:
1258                         rate = ZD1201_RATEB2;
1259                         break;
1260                 case 5500000:
1261                         rate = ZD1201_RATEB5;
1262                         break;
1263                 case 11000000:
1264                 default:
1265                         rate = ZD1201_RATEB11;
1266                         break;
1267         }
1268         if (!rrq->fixed) { /* Also enable all lower bitrates */
1269                 rate |= rate-1;
1270         }
1271
1272         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1273         if (err)
1274                 return err;
1275
1276         return zd1201_mac_reset(zd);
1277 }
1278
1279 static int zd1201_get_rate(struct net_device *dev,
1280     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1281 {
1282         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1283         short rate;
1284         int err;
1285
1286         err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1287         if (err)
1288                 return err;
1289
1290         switch(rate) {
1291                 case 1:
1292                         rrq->value = 1000000;
1293                         break;
1294                 case 2:
1295                         rrq->value = 2000000;
1296                         break;
1297                 case 5:
1298                         rrq->value = 5500000;
1299                         break;
1300                 case 11:
1301                         rrq->value = 11000000;
1302                         break;
1303                 default:
1304                         rrq->value = 0;
1305         }
1306         rrq->fixed = 0;
1307         rrq->disabled = 0;
1308
1309         return 0;
1310 }
1311
1312 static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1313     struct iw_param *rts, char *extra)
1314 {
1315         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1316         int err;
1317         short val = rts->value;
1318
1319         if (rts->disabled || !rts->fixed)
1320                 val = ZD1201_RTSMAX;
1321         if (val > ZD1201_RTSMAX)
1322                 return -EINVAL;
1323         if (val < 0)
1324                 return -EINVAL;
1325
1326         err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1327         if (err)
1328                 return err;
1329         return zd1201_mac_reset(zd);
1330 }
1331
1332 static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1333     struct iw_param *rts, char *extra)
1334 {
1335         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1336         short rtst;
1337         int err;
1338
1339         err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1340         if (err)
1341                 return err;
1342         rts->value = rtst;
1343         rts->disabled = (rts->value == ZD1201_RTSMAX);
1344         rts->fixed = 1;
1345
1346         return 0;
1347 }
1348
1349 static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1350     struct iw_param *frag, char *extra)
1351 {
1352         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1353         int err;
1354         short val = frag->value;
1355
1356         if (frag->disabled || !frag->fixed)
1357                 val = ZD1201_FRAGMAX;
1358         if (val > ZD1201_FRAGMAX)
1359                 return -EINVAL;
1360         if (val < ZD1201_FRAGMIN)
1361                 return -EINVAL;
1362         if (val & 1)
1363                 return -EINVAL;
1364         err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1365         if (err)
1366                 return err;
1367         return zd1201_mac_reset(zd);
1368 }
1369
1370 static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1371     struct iw_param *frag, char *extra)
1372 {
1373         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1374         short fragt;
1375         int err;
1376
1377         err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1378         if (err)
1379                 return err;
1380         frag->value = fragt;
1381         frag->disabled = (frag->value == ZD1201_FRAGMAX);
1382         frag->fixed = 1;
1383
1384         return 0;
1385 }
1386
1387 static int zd1201_set_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_get_retry(struct net_device *dev,
1394     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1395 {
1396         return 0;
1397 }
1398
1399 static int zd1201_set_encode(struct net_device *dev,
1400     struct iw_request_info *info, struct iw_point *erq, char *key)
1401 {
1402         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1403         short i;
1404         int err, rid;
1405
1406         if (erq->length > ZD1201_MAXKEYLEN)
1407                 return -EINVAL;
1408
1409         i = (erq->flags & IW_ENCODE_INDEX)-1;
1410         if (i == -1) {
1411                 err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1412                 if (err)
1413                         return err;
1414         } else {
1415                 err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1416                 if (err)
1417                         return err;
1418         }
1419
1420         if (i < 0 || i >= ZD1201_NUMKEYS)
1421                 return -EINVAL;
1422
1423         rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1424         err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1425         if (err)
1426                 return err;
1427         zd->encode_keylen[i] = erq->length;
1428         memcpy(zd->encode_keys[i], key, erq->length);
1429
1430         i=0;
1431         if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1432                 i |= 0x01;
1433                 zd->encode_enabled = 1;
1434         } else
1435                 zd->encode_enabled = 0;
1436         if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1437                 i |= 0x02;
1438                 zd->encode_restricted = 1;
1439         } else
1440                 zd->encode_restricted = 0;
1441         err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1442         if (err)
1443                 return err;
1444
1445         if (zd->encode_enabled)
1446                 i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1447         else
1448                 i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1449         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1450         if (err)
1451                 return err;
1452
1453         return zd1201_mac_reset(zd);
1454 }
1455
1456 static int zd1201_get_encode(struct net_device *dev,
1457     struct iw_request_info *info, struct iw_point *erq, char *key)
1458 {
1459         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1460         short i;
1461         int err;
1462
1463         if (zd->encode_enabled)
1464                 erq->flags = IW_ENCODE_ENABLED;
1465         else
1466                 erq->flags = IW_ENCODE_DISABLED;
1467         if (zd->encode_restricted)
1468                 erq->flags |= IW_ENCODE_RESTRICTED;
1469         else
1470                 erq->flags |= IW_ENCODE_OPEN;
1471
1472         i = (erq->flags & IW_ENCODE_INDEX) -1;
1473         if (i == -1) {
1474                 err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1475                 if (err)
1476                         return err;
1477         }
1478         if (i<0 || i>= ZD1201_NUMKEYS)
1479                 return -EINVAL;
1480
1481         erq->flags |= i+1;
1482
1483         erq->length = zd->encode_keylen[i];
1484         memcpy(key, zd->encode_keys[i], erq->length);
1485
1486         return 0;
1487 }
1488
1489 static int zd1201_set_power(struct net_device *dev,
1490     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1491 {
1492         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1493         short enabled, duration, level;
1494         int err;
1495
1496         enabled = vwrq->disabled ? 0 : 1;
1497         if (enabled) {
1498                 if (vwrq->flags & IW_POWER_PERIOD) {
1499                         duration = vwrq->value;
1500                         err = zd1201_setconfig16(zd,
1501                             ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1502                         if (err)
1503                                 return err;
1504                         goto out;
1505                 }
1506                 if (vwrq->flags & IW_POWER_TIMEOUT) {
1507                         err = zd1201_getconfig16(zd,
1508                             ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1509                         if (err)
1510                                 return err;
1511                         level = vwrq->value * 4 / duration;
1512                         if (level > 4)
1513                                 level = 4;
1514                         if (level < 0)
1515                                 level = 0;
1516                         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1517                             level);
1518                         if (err)
1519                                 return err;
1520                         goto out;
1521                 }
1522                 return -EINVAL;
1523         }
1524 out:
1525         return zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1526 }
1527
1528 static int zd1201_get_power(struct net_device *dev,
1529     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1530 {
1531         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1532         short enabled, level, duration;
1533         int err;
1534
1535         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1536         if (err)
1537                 return err;
1538         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1539         if (err)
1540                 return err;
1541         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1542         if (err)
1543                 return err;
1544         vwrq->disabled = enabled ? 0 : 1;
1545         if (vwrq->flags & IW_POWER_TYPE) {
1546                 if (vwrq->flags & IW_POWER_PERIOD) {
1547                         vwrq->value = duration;
1548                         vwrq->flags = IW_POWER_PERIOD;
1549                 } else {
1550                         vwrq->value = duration * level / 4;
1551                         vwrq->flags = IW_POWER_TIMEOUT;
1552                 }
1553         }
1554         if (vwrq->flags & IW_POWER_MODE) {
1555                 if (enabled && level)
1556                         vwrq->flags = IW_POWER_UNICAST_R;
1557                 else
1558                         vwrq->flags = IW_POWER_ALL_R;
1559         }
1560
1561         return 0;
1562 }
1563
1564
1565 static const iw_handler zd1201_iw_handler[] =
1566 {
1567         (iw_handler) zd1201_config_commit,      /* SIOCSIWCOMMIT */
1568         (iw_handler) zd1201_get_name,           /* SIOCGIWNAME */
1569         (iw_handler) NULL,                      /* SIOCSIWNWID */
1570         (iw_handler) NULL,                      /* SIOCGIWNWID */
1571         (iw_handler) zd1201_set_freq,           /* SIOCSIWFREQ */
1572         (iw_handler) zd1201_get_freq,           /* SIOCGIWFREQ */
1573         (iw_handler) zd1201_set_mode,           /* SIOCSIWMODE */
1574         (iw_handler) zd1201_get_mode,           /* SIOCGIWMODE */
1575         (iw_handler) NULL,                      /* SIOCSIWSENS */
1576         (iw_handler) NULL,                      /* SIOCGIWSENS */
1577         (iw_handler) NULL,                      /* SIOCSIWRANGE */
1578         (iw_handler) zd1201_get_range,           /* SIOCGIWRANGE */
1579         (iw_handler) NULL,                      /* SIOCSIWPRIV */
1580         (iw_handler) NULL,                      /* SIOCGIWPRIV */
1581         (iw_handler) NULL,                      /* SIOCSIWSTATS */
1582         (iw_handler) NULL,                      /* SIOCGIWSTATS */
1583         (iw_handler) NULL,                      /* SIOCSIWSPY */
1584         (iw_handler) NULL,                      /* SIOCGIWSPY */
1585         (iw_handler) NULL,                      /* -- hole -- */
1586         (iw_handler) NULL,                      /* -- hole -- */
1587         (iw_handler) NULL/*zd1201_set_wap*/,            /* SIOCSIWAP */
1588         (iw_handler) zd1201_get_wap,            /* SIOCGIWAP */
1589         (iw_handler) NULL,                      /* -- hole -- */
1590         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
1591         (iw_handler) zd1201_set_scan,           /* SIOCSIWSCAN */
1592         (iw_handler) zd1201_get_scan,           /* SIOCGIWSCAN */
1593         (iw_handler) zd1201_set_essid,          /* SIOCSIWESSID */
1594         (iw_handler) zd1201_get_essid,          /* SIOCGIWESSID */
1595         (iw_handler) NULL,                      /* SIOCSIWNICKN */
1596         (iw_handler) zd1201_get_nick,           /* SIOCGIWNICKN */
1597         (iw_handler) NULL,                      /* -- hole -- */
1598         (iw_handler) NULL,                      /* -- hole -- */
1599         (iw_handler) zd1201_set_rate,           /* SIOCSIWRATE */
1600         (iw_handler) zd1201_get_rate,           /* SIOCGIWRATE */
1601         (iw_handler) zd1201_set_rts,            /* SIOCSIWRTS */
1602         (iw_handler) zd1201_get_rts,            /* SIOCGIWRTS */
1603         (iw_handler) zd1201_set_frag,           /* SIOCSIWFRAG */
1604         (iw_handler) zd1201_get_frag,           /* SIOCGIWFRAG */
1605         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
1606         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
1607         (iw_handler) zd1201_set_retry,          /* SIOCSIWRETRY */
1608         (iw_handler) zd1201_get_retry,          /* SIOCGIWRETRY */
1609         (iw_handler) zd1201_set_encode,         /* SIOCSIWENCODE */
1610         (iw_handler) zd1201_get_encode,         /* SIOCGIWENCODE */
1611         (iw_handler) zd1201_set_power,          /* SIOCSIWPOWER */
1612         (iw_handler) zd1201_get_power,          /* SIOCGIWPOWER */
1613 };
1614
1615 static int zd1201_set_hostauth(struct net_device *dev,
1616     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1617 {
1618         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1619
1620         if (!zd->ap)
1621                 return -EOPNOTSUPP;
1622
1623         return zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1624 }
1625
1626 static int zd1201_get_hostauth(struct net_device *dev,
1627     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1628 {
1629         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1630         short hostauth;
1631         int err;
1632
1633         if (!zd->ap)
1634                 return -EOPNOTSUPP;
1635
1636         err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1637         if (err)
1638                 return err;
1639         rrq->value = hostauth;
1640         rrq->fixed = 1;
1641
1642         return 0;
1643 }
1644
1645 static int zd1201_auth_sta(struct net_device *dev,
1646     struct iw_request_info *info, struct sockaddr *sta, char *extra)
1647 {
1648         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1649         unsigned char buffer[10];
1650
1651         if (!zd->ap)
1652                 return -EOPNOTSUPP;
1653
1654         memcpy(buffer, sta->sa_data, ETH_ALEN);
1655         *(short*)(buffer+6) = 0;        /* 0==success, 1==failure */
1656         *(short*)(buffer+8) = 0;
1657
1658         return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1659 }
1660
1661 static int zd1201_set_maxassoc(struct net_device *dev,
1662     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1663 {
1664         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1665         int err;
1666
1667         if (!zd->ap)
1668                 return -EOPNOTSUPP;
1669
1670         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1671         if (err)
1672                 return err;
1673         return 0;
1674 }
1675
1676 static int zd1201_get_maxassoc(struct net_device *dev,
1677     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1678 {
1679         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1680         short maxassoc;
1681         int err;
1682
1683         if (!zd->ap)
1684                 return -EOPNOTSUPP;
1685
1686         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1687         if (err)
1688                 return err;
1689         rrq->value = maxassoc;
1690         rrq->fixed = 1;
1691
1692         return 0;
1693 }
1694
1695 static const iw_handler zd1201_private_handler[] = {
1696         (iw_handler) zd1201_set_hostauth,       /* ZD1201SIWHOSTAUTH */
1697         (iw_handler) zd1201_get_hostauth,       /* ZD1201GIWHOSTAUTH */
1698         (iw_handler) zd1201_auth_sta,           /* ZD1201SIWAUTHSTA */
1699         (iw_handler) NULL,                      /* nothing to get */
1700         (iw_handler) zd1201_set_maxassoc,       /* ZD1201SIMAXASSOC */
1701         (iw_handler) zd1201_get_maxassoc,       /* ZD1201GIMAXASSOC */
1702 };
1703
1704 static const struct iw_priv_args zd1201_private_args[] = {
1705         { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1706             IW_PRIV_TYPE_NONE, "sethostauth" },
1707         { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1708             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1709         { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1710             IW_PRIV_TYPE_NONE, "authstation" },
1711         { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1712             IW_PRIV_TYPE_NONE, "setmaxassoc" },
1713         { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1714             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1715 };
1716
1717 static const struct iw_handler_def zd1201_iw_handlers = {
1718         .num_standard           = ARRAY_SIZE(zd1201_iw_handler),
1719         .num_private            = ARRAY_SIZE(zd1201_private_handler),
1720         .num_private_args       = ARRAY_SIZE(zd1201_private_args),
1721         .standard               = (iw_handler *)zd1201_iw_handler,
1722         .private                = (iw_handler *)zd1201_private_handler,
1723         .private_args           = (struct iw_priv_args *) zd1201_private_args,
1724         .get_wireless_stats     = zd1201_get_wireless_stats,
1725 };
1726
1727 static int zd1201_probe(struct usb_interface *interface,
1728                         const struct usb_device_id *id)
1729 {
1730         struct zd1201 *zd;
1731         struct usb_device *usb;
1732         int err;
1733         short porttype;
1734         char buf[IW_ESSID_MAX_SIZE+2];
1735
1736         usb = interface_to_usbdev(interface);
1737
1738         zd = kzalloc(sizeof(struct zd1201), GFP_KERNEL);
1739         if (!zd)
1740                 return -ENOMEM;
1741         zd->ap = ap;
1742         zd->usb = usb;
1743         zd->removed = 0;
1744         init_waitqueue_head(&zd->rxdataq);
1745         INIT_HLIST_HEAD(&zd->fraglist);
1746
1747         err = zd1201_fw_upload(usb, zd->ap);
1748         if (err) {
1749                 dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
1750                 goto err_zd;
1751         }
1752
1753         zd->endp_in = 1;
1754         zd->endp_out = 1;
1755         zd->endp_out2 = 2;
1756         zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1757         zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1758         if (!zd->rx_urb || !zd->tx_urb)
1759                 goto err_zd;
1760
1761         mdelay(100);
1762         err = zd1201_drvr_start(zd);
1763         if (err)
1764                 goto err_zd;
1765
1766         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
1767         if (err)
1768                 goto err_start;
1769
1770         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
1771             ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
1772         if (err)
1773                 goto err_start;
1774
1775         zd->dev = alloc_etherdev(0);
1776         if (!zd->dev)
1777                 goto err_start;
1778
1779         zd->dev->priv = zd;
1780         zd->dev->open = zd1201_net_open;
1781         zd->dev->stop = zd1201_net_stop;
1782         zd->dev->get_stats = zd1201_get_stats;
1783         zd->dev->wireless_handlers =
1784             (struct iw_handler_def *)&zd1201_iw_handlers;
1785         zd->dev->hard_start_xmit = zd1201_hard_start_xmit;
1786         zd->dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
1787         zd->dev->tx_timeout = zd1201_tx_timeout;
1788         zd->dev->set_multicast_list = zd1201_set_multicast;
1789         zd->dev->set_mac_address = zd1201_set_mac_address;
1790         strcpy(zd->dev->name, "wlan%d");
1791
1792         err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR,
1793             zd->dev->dev_addr, zd->dev->addr_len);
1794         if (err)
1795                 goto err_net;
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_net;
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_net;
1811
1812         SET_NETDEV_DEV(zd->dev, &usb->dev);
1813
1814         err = register_netdev(zd->dev);
1815         if (err)
1816                 goto err_net;
1817         dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
1818             zd->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_net:
1826         free_netdev(zd->dev);
1827 err_start:
1828         /* Leave the device in reset state */
1829         zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
1830 err_zd:
1831         usb_free_urb(zd->tx_urb);
1832         usb_free_urb(zd->rx_urb);
1833         kfree(zd);
1834         return err;
1835 }
1836
1837 static void zd1201_disconnect(struct usb_interface *interface)
1838 {
1839         struct zd1201 *zd=(struct zd1201 *)usb_get_intfdata(interface);
1840         struct hlist_node *node, *node2;
1841         struct zd1201_frag *frag;
1842
1843         if (!zd)
1844                 return;
1845         usb_set_intfdata(interface, NULL);
1846         if (zd->dev) {
1847                 unregister_netdev(zd->dev);
1848                 free_netdev(zd->dev);
1849         }
1850
1851         hlist_for_each_entry_safe(frag, node, node2, &zd->fraglist, fnode) {
1852                 hlist_del_init(&frag->fnode);
1853                 kfree_skb(frag->skb);
1854                 kfree(frag);
1855         }
1856
1857         if (zd->tx_urb) {
1858                 usb_kill_urb(zd->tx_urb);
1859                 usb_free_urb(zd->tx_urb);
1860         }
1861         if (zd->rx_urb) {
1862                 usb_kill_urb(zd->rx_urb);
1863                 usb_free_urb(zd->rx_urb);
1864         }
1865         kfree(zd);
1866 }
1867
1868 #ifdef CONFIG_PM
1869
1870 static int zd1201_suspend(struct usb_interface *interface,
1871                            pm_message_t message)
1872 {
1873         struct zd1201 *zd = usb_get_intfdata(interface);
1874
1875         netif_device_detach(zd->dev);
1876
1877         zd->was_enabled = zd->mac_enabled;
1878
1879         if (zd->was_enabled)
1880                 return zd1201_disable(zd);
1881         else
1882                 return 0;
1883 }
1884
1885 static int zd1201_resume(struct usb_interface *interface)
1886 {
1887         struct zd1201 *zd = usb_get_intfdata(interface);
1888
1889         if (!zd || !zd->dev)
1890                 return -ENODEV;
1891
1892         netif_device_attach(zd->dev);
1893
1894         if (zd->was_enabled)
1895                 return zd1201_enable(zd);
1896         else
1897                 return 0;
1898 }
1899
1900 #else
1901
1902 #define zd1201_suspend NULL
1903 #define zd1201_resume  NULL
1904
1905 #endif
1906
1907 static struct usb_driver zd1201_usb = {
1908         .name = "zd1201",
1909         .probe = zd1201_probe,
1910         .disconnect = zd1201_disconnect,
1911         .id_table = zd1201_table,
1912         .suspend = zd1201_suspend,
1913         .resume = zd1201_resume,
1914 };
1915
1916 static int __init zd1201_init(void)
1917 {
1918         return usb_register(&zd1201_usb);
1919 }
1920
1921 static void __exit zd1201_cleanup(void)
1922 {
1923         usb_deregister(&zd1201_usb);
1924 }
1925
1926 module_init(zd1201_init);
1927 module_exit(zd1201_cleanup);