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

   1 /*
   2  *      Driver for ZyDAS zd1201 based wireless USB devices.
   3  *
   4  *      Copyright (c) 2004, 2005 Jeroen Vreeken (pe1rxq@amsat.org)
   5  *
   6  *      This program is free software; you can redistribute it and/or
   7  *      modify it under the terms of the GNU General Public License
   8  *      version 2 as published by the Free Software Foundation.
   9  *
  10  *      Parts of this driver have been derived from a wlan-ng version
  11  *      modified by ZyDAS. They also made documentation available, thanks!
  12  *      Copyright (C) 1999 AbsoluteValue Systems, Inc.  All Rights Reserved.
  13  */
  14
  15 #include <linux/module.h>
  16 #include <linux/usb.h>
  17 #include <linux/netdevice.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/wireless.h>
  20 #include <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->protocol = eth_type_trans(skb, zd->dev);
 331                         skb->dev->last_rx = jiffies;
 332                         zd->stats.rx_packets++;
 333                         zd->stats.rx_bytes += skb->len;
 334                         netif_rx(skb);
 335                         goto resubmit;
 336                 }
 337
 338                 if ((seq & IEEE80211_SCTL_FRAG) ||
 339                     (fc & IEEE80211_FCTL_MOREFRAGS)) {
 340                         struct zd1201_frag *frag = NULL;
 341                         char *ptr;
 342
 343                         if (datalen<14)
 344                                 goto resubmit;
 345                         if ((seq & IEEE80211_SCTL_FRAG) == 0) {
 346                                 frag = kmalloc(sizeof(*frag), GFP_ATOMIC);
 347                                 if (!frag)
 348                                         goto resubmit;
 349                                 skb = dev_alloc_skb(IEEE80211_DATA_LEN +14+2);
 350                                 if (!skb) {
 351                                         kfree(frag);
 352                                         goto resubmit;
 353                                 }
 354                                 frag->skb = skb;
 355                                 frag->seq = seq & IEEE80211_SCTL_SEQ;
 356                                 skb_reserve(skb, 2);
 357                                 memcpy(skb_put(skb, 12), &data[datalen-14], 12);
 358                                 memcpy(skb_put(skb, 2), &data[6], 2);
 359                                 memcpy(skb_put(skb, len), data+8, len);
 360                                 hlist_add_head(&frag->fnode, &zd->fraglist);
 361                                 goto resubmit;
 362                         }
 363                         hlist_for_each_entry(frag, node, &zd->fraglist, fnode)
 364                                 if (frag->seq == (seq&IEEE80211_SCTL_SEQ))
 365                                         break;
 366                         if (!frag)
 367                                 goto resubmit;
 368                         skb = frag->skb;
 369                         ptr = skb_put(skb, len);
 370                         if (ptr)
 371                                 memcpy(ptr, data+8, len);
 372                         if (fc & IEEE80211_FCTL_MOREFRAGS)
 373                                 goto resubmit;
 374                         hlist_del_init(&frag->fnode);
 375                         kfree(frag);
 376                 } else {
 377                         if (datalen<14)
 378                                 goto resubmit;
 379                         skb = dev_alloc_skb(len + 14 + 2);
 380                         if (!skb)
 381                                 goto resubmit;
 382                         skb_reserve(skb, 2);
 383                         memcpy(skb_put(skb, 12), &data[datalen-14], 12);
 384                         memcpy(skb_put(skb, 2), &data[6], 2);
 385                         memcpy(skb_put(skb, len), data+8, len);
 386                 }
 387                 skb->protocol = eth_type_trans(skb, zd->dev);
 388                 skb->dev->last_rx = jiffies;
 389                 zd->stats.rx_packets++;
 390                 zd->stats.rx_bytes += skb->len;
 391                 netif_rx(skb);
 392         }
 393 resubmit:
 394         memset(data, 0, ZD1201_RXSIZE);
 395
 396         urb->status = 0;
 397         urb->dev = zd->usb;
 398         if(usb_submit_urb(urb, GFP_ATOMIC))
 399                 free = 1;
 400
 401 exit:
 402         if (free) {
 403                 zd->rxlen = 0;
 404                 zd->rxdatas = 1;
 405                 wake_up(&zd->rxdataq);
 406                 kfree(urb->transfer_buffer);
 407         }
 408         return;
 409 }
 410
 411 static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
 412         unsigned int riddatalen)
 413 {
 414         int err;
 415         int i = 0;
 416         int code;
 417         int rid_fid;
 418         int length;
 419         unsigned char *pdata;
 420
 421         zd->rxdatas = 0;
 422         err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
 423         if (err)
 424                 return err;
 425
 426         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 427         if (!zd->rxlen)
 428                 return -EIO;
 429
 430         code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
 431         rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
 432         length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
 433         if (length > zd->rxlen)
 434                 length = zd->rxlen-6;
 435
 436         /* If access bit is not on, then error */
 437         if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
 438                 return -EINVAL;
 439
 440         /* Not enough buffer for allocating data */
 441         if (riddatalen != (length - 4)) {
 442                 dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
 443                     riddatalen, zd->rxlen, length, rid, rid_fid);
 444                 return -ENODATA;
 445         }
 446
 447         zd->rxdatas = 0;
 448         /* Issue SetRxRid commnd */
 449         err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
 450         if (err)
 451                 return err;
 452
 453         /* Receive RID record from resource packets */
 454         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 455         if (!zd->rxlen)
 456                 return -EIO;
 457
 458         if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
 459                 dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
 460                     zd->rxdata[zd->rxlen-1]);
 461                 return -EINVAL;
 462         }
 463
 464         /* Set the data pointer and received data length */
 465         pdata = zd->rxdata;
 466         length = zd->rxlen;
 467
 468         do {
 469                 int actual_length;
 470
 471                 actual_length = (length > 64) ? 64 : length;
 472
 473                 if (pdata[0] != 0x3) {
 474                         dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
 475                             pdata[0]);
 476                         return -EINVAL;
 477                 }
 478
 479                 if (actual_length != 64) {
 480                         /* Trim the last packet type byte */
 481                         actual_length--;
 482                 }
 483
 484                 /* Skip the 4 bytes header (RID length and RID) */
 485                 if (i == 0) {
 486                         pdata += 8;
 487                         actual_length -= 8;
 488                 } else {
 489                         pdata += 4;
 490                         actual_length -= 4;
 491                 }
 492
 493                 memcpy(riddata, pdata, actual_length);
 494                 riddata += actual_length;
 495                 pdata += actual_length;
 496                 length -= 64;
 497                 i++;
 498         } while (length > 0);
 499
 500         return 0;
 501 }
 502
 503 /*
 504  *      resreq:
 505  *              byte    type
 506  *              byte    sequence
 507  *              u16     reserved
 508  *              byte    data[12]
 509  *      total: 16
 510  */
 511 static int zd1201_setconfig(struct zd1201 *zd, int rid, void *buf, int len, int wait)
 512 {
 513         int err;
 514         unsigned char *request;
 515         int reqlen;
 516         char seq=0;
 517         struct urb *urb;
 518         gfp_t gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
 519
 520         len += 4;                       /* first 4 are for header */
 521
 522         zd->rxdatas = 0;
 523         zd->rxlen = 0;
 524         for (seq=0; len > 0; seq++) {
 525                 request = kmalloc(16, gfp_mask);
 526                 if (!request)
 527                         return -ENOMEM;
 528                 urb = usb_alloc_urb(0, gfp_mask);
 529                 if (!urb) {
 530                         kfree(request);
 531                         return -ENOMEM;
 532                 }
 533                 memset(request, 0, 16);
 534                 reqlen = len>12 ? 12 : len;
 535                 request[0] = ZD1201_USB_RESREQ;
 536                 request[1] = seq;
 537                 request[2] = 0;
 538                 request[3] = 0;
 539                 if (request[1] == 0) {
 540                         /* add header */
 541                         *(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
 542                         *(__le16*)&request[6] = cpu_to_le16(rid);
 543                         memcpy(request+8, buf, reqlen-4);
 544                         buf += reqlen-4;
 545                 } else {
 546                         memcpy(request+4, buf, reqlen);
 547                         buf += reqlen;
 548                 }
 549
 550                 len -= reqlen;
 551
 552                 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
 553                     zd->endp_out2), request, 16, zd1201_usbfree, zd);
 554                 err = usb_submit_urb(urb, gfp_mask);
 555                 if (err)
 556                         goto err;
 557         }
 558
 559         request = kmalloc(16, gfp_mask);
 560         if (!request)
 561                 return -ENOMEM;
 562         urb = usb_alloc_urb(0, gfp_mask);
 563         if (!urb) {
 564                 kfree(request);
 565                 return -ENOMEM;
 566         }
 567         *((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
 568         *((__le16*)&request[4]) =
 569             cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
 570         *((__le16*)&request[6]) = cpu_to_le16(rid);
 571         *((__le16*)&request[8]) = cpu_to_le16(0);
 572         *((__le16*)&request[10]) = cpu_to_le16(0);
 573         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 574              request, 16, zd1201_usbfree, zd);
 575         err = usb_submit_urb(urb, gfp_mask);
 576         if (err)
 577                 goto err;
 578
 579         if (wait) {
 580                 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 581                 if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
 582                         dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
 583                 }
 584         }
 585
 586         return 0;
 587 err:
 588         kfree(request);
 589         usb_free_urb(urb);
 590         return err;
 591 }
 592
 593 static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
 594 {
 595         int err;
 596         __le16 zdval;
 597
 598         err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
 599         if (err)
 600                 return err;
 601         *val = le16_to_cpu(zdval);
 602         return 0;
 603 }
 604
 605 static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
 606 {
 607         __le16 zdval = cpu_to_le16(val);
 608         return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
 609 }
 610
 611 static int zd1201_drvr_start(struct zd1201 *zd)
 612 {
 613         int err, i;
 614         short max;
 615         __le16 zdmax;
 616         unsigned char *buffer;
 617
 618         buffer = kzalloc(ZD1201_RXSIZE, GFP_KERNEL);
 619         if (!buffer)
 620                 return -ENOMEM;
 621
 622         usb_fill_bulk_urb(zd->rx_urb, zd->usb,
 623             usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
 624             zd1201_usbrx, zd);
 625
 626         err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
 627         if (err)
 628                 goto err_buffer;
 629
 630         err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
 631         if (err)
 632                 goto err_urb;
 633
 634         err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
 635             sizeof(__le16));
 636         if (err)
 637                 goto err_urb;
 638
 639         max = le16_to_cpu(zdmax);
 640         for (i=0; i<max; i++) {
 641                 err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
 642                 if (err)
 643                         goto err_urb;
 644         }
 645
 646         return 0;
 647
 648 err_urb:
 649         usb_kill_urb(zd->rx_urb);
 650         return err;
 651 err_buffer:
 652         kfree(buffer);
 653         return err;
 654 }
 655
 656 /*      Magic alert: The firmware doesn't seem to like the MAC state being
 657  *      toggled in promisc (aka monitor) mode.
 658  *      (It works a number of times, but will halt eventually)
 659  *      So we turn it of before disabling and on after enabling if needed.
 660  */
 661 static int zd1201_enable(struct zd1201 *zd)
 662 {
 663         int err;
 664
 665         if (zd->mac_enabled)
 666                 return 0;
 667
 668         err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
 669         if (!err)
 670                 zd->mac_enabled = 1;
 671
 672         if (zd->monitor)
 673                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
 674
 675         return err;
 676 }
 677
 678 static int zd1201_disable(struct zd1201 *zd)
 679 {
 680         int err;
 681
 682         if (!zd->mac_enabled)
 683                 return 0;
 684         if (zd->monitor) {
 685                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 686                 if (err)
 687                         return err;
 688         }
 689
 690         err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
 691         if (!err)
 692                 zd->mac_enabled = 0;
 693         return err;
 694 }
 695
 696 static int zd1201_mac_reset(struct zd1201 *zd)
 697 {
 698         if (!zd->mac_enabled)
 699                 return 0;
 700         zd1201_disable(zd);
 701         return zd1201_enable(zd);
 702 }
 703
 704 static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
 705 {
 706         int err, val;
 707         char buf[IW_ESSID_MAX_SIZE+2];
 708
 709         err = zd1201_disable(zd);
 710         if (err)
 711                 return err;
 712
 713         val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
 714         val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
 715         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
 716         if (err)
 717                 return err;
 718
 719         *(__le16 *)buf = cpu_to_le16(essidlen);
 720         memcpy(buf+2, essid, essidlen);
 721         if (!zd->ap) {  /* Normal station */
 722                 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
 723                     IW_ESSID_MAX_SIZE+2, 1);
 724                 if (err)
 725                         return err;
 726         } else {        /* AP */
 727                 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
 728                     IW_ESSID_MAX_SIZE+2, 1);
 729                 if (err)
 730                         return err;
 731         }
 732
 733         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 734             zd->dev->dev_addr, zd->dev->addr_len, 1);
 735         if (err)
 736                 return err;
 737
 738         err = zd1201_enable(zd);
 739         if (err)
 740                 return err;
 741
 742         msleep(100);
 743         return 0;
 744 }
 745
 746 static int zd1201_net_open(struct net_device *dev)
 747 {
 748         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 749
 750         /* Start MAC with wildcard if no essid set */
 751         if (!zd->mac_enabled)
 752                 zd1201_join(zd, zd->essid, zd->essidlen);
 753         netif_start_queue(dev);
 754
 755         return 0;
 756 }
 757
 758 static int zd1201_net_stop(struct net_device *dev)
 759 {
 760         netif_stop_queue(dev);
 761         return 0;
 762 }
 763
 764 /*
 765         RFC 1042 encapsulates Ethernet frames in 802.11 frames
 766         by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
 767         (0x00, 0x00, 0x00). Zd requires an additional padding, copy
 768         of ethernet addresses, length of the standard RFC 1042 packet
 769         and a command byte (which is nul for tx).
 770
 771         tx frame (from Wlan NG):
 772         RFC 1042:
 773                 llc             0xAA 0xAA 0x03 (802.2 LLC)
 774                 snap            0x00 0x00 0x00 (Ethernet encapsulated)
 775                 type            2 bytes, Ethernet type field
 776                 payload         (minus eth header)
 777         Zydas specific:
 778                 padding         1B if (skb->len+8+1)%64==0
 779                 Eth MAC addr    12 bytes, Ethernet MAC addresses
 780                 length          2 bytes, RFC 1042 packet length
 781                                 (llc+snap+type+payload)
 782                 zd              1 null byte, zd1201 packet type
 783  */
 784 static int zd1201_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 785 {
 786         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 787         unsigned char *txbuf = zd->txdata;
 788         int txbuflen, pad = 0, err;
 789         struct urb *urb = zd->tx_urb;
 790
 791         if (!zd->mac_enabled || zd->monitor) {
 792                 zd->stats.tx_dropped++;
 793                 kfree_skb(skb);
 794                 return 0;
 795         }
 796         netif_stop_queue(dev);
 797
 798         txbuflen = skb->len + 8 + 1;
 799         if (txbuflen%64 == 0) {
 800                 pad = 1;
 801                 txbuflen++;
 802         }
 803         txbuf[0] = 0xAA;
 804         txbuf[1] = 0xAA;
 805         txbuf[2] = 0x03;
 806         txbuf[3] = 0x00;        /* rfc1042 */
 807         txbuf[4] = 0x00;
 808         txbuf[5] = 0x00;
 809
 810         skb_copy_from_linear_data_offset(skb, 12, txbuf + 6, skb->len - 12);
 811         if (pad)
 812                 txbuf[skb->len-12+6]=0;
 813         skb_copy_from_linear_data(skb, txbuf + skb->len - 12 + 6 + pad, 12);
 814         *(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
 815         txbuf[txbuflen-1] = 0;
 816
 817         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
 818             txbuf, txbuflen, zd1201_usbtx, zd);
 819
 820         err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
 821         if (err) {
 822                 zd->stats.tx_errors++;
 823                 netif_start_queue(dev);
 824                 return err;
 825         }
 826         zd->stats.tx_packets++;
 827         zd->stats.tx_bytes += skb->len;
 828         dev->trans_start = jiffies;
 829         kfree_skb(skb);
 830
 831         return 0;
 832 }
 833
 834 static void zd1201_tx_timeout(struct net_device *dev)
 835 {
 836         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 837
 838         if (!zd)
 839                 return;
 840         dev_warn(&zd->usb->dev, "%s: TX timeout, shooting down urb\n",
 841             dev->name);
 842         usb_unlink_urb(zd->tx_urb);
 843         zd->stats.tx_errors++;
 844         /* Restart the timeout to quiet the watchdog: */
 845         dev->trans_start = jiffies;
 846 }
 847
 848 static int zd1201_set_mac_address(struct net_device *dev, void *p)
 849 {
 850         struct sockaddr *addr = p;
 851         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 852         int err;
 853
 854         if (!zd)
 855                 return -ENODEV;
 856
 857         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 858             addr->sa_data, dev->addr_len, 1);
 859         if (err)
 860                 return err;
 861         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
 862
 863         return zd1201_mac_reset(zd);
 864 }
 865
 866 static struct net_device_stats *zd1201_get_stats(struct net_device *dev)
 867 {
 868         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 869
 870         return &zd->stats;
 871 }
 872
 873 static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
 874 {
 875         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 876
 877         return &zd->iwstats;
 878 }
 879
 880 static void zd1201_set_multicast(struct net_device *dev)
 881 {
 882         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 883         struct dev_mc_list *mc = dev->mc_list;
 884         unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
 885         int i;
 886
 887         if (dev->mc_count > ZD1201_MAXMULTI)
 888                 return;
 889
 890         for (i=0; i<dev->mc_count; i++) {
 891                 memcpy(reqbuf+i*ETH_ALEN, mc->dmi_addr, ETH_ALEN);
 892                 mc = mc->next;
 893         }
 894         zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
 895             dev->mc_count*ETH_ALEN, 0);
 896
 897 }
 898
 899 static int zd1201_config_commit(struct net_device *dev,
 900     struct iw_request_info *info, struct iw_point *data, char *essid)
 901 {
 902         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 903
 904         return zd1201_mac_reset(zd);
 905 }
 906
 907 static int zd1201_get_name(struct net_device *dev,
 908     struct iw_request_info *info, char *name, char *extra)
 909 {
 910         strcpy(name, "IEEE 802.11b");
 911         return 0;
 912 }
 913
 914 static int zd1201_set_freq(struct net_device *dev,
 915     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 916 {
 917         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 918         short channel = 0;
 919         int err;
 920
 921         if (freq->e == 0)
 922                 channel = freq->m;
 923         else {
 924                 if (freq->m >= 2482)
 925                         channel = 14;
 926                 if (freq->m >= 2407)
 927                         channel = (freq->m-2407)/5;
 928         }
 929
 930         err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
 931         if (err)
 932                 return err;
 933
 934         zd1201_mac_reset(zd);
 935
 936         return 0;
 937 }
 938
 939 static int zd1201_get_freq(struct net_device *dev,
 940     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 941 {
 942         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 943         short channel;
 944         int err;
 945
 946         err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
 947         if (err)
 948                 return err;
 949         freq->e = 0;
 950         freq->m = channel;
 951
 952         return 0;
 953 }
 954
 955 static int zd1201_set_mode(struct net_device *dev,
 956     struct iw_request_info *info, __u32 *mode, char *extra)
 957 {
 958         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 959         short porttype, monitor = 0;
 960         unsigned char buffer[IW_ESSID_MAX_SIZE+2];
 961         int err;
 962
 963         if (zd->ap) {
 964                 if (*mode != IW_MODE_MASTER)
 965                         return -EINVAL;
 966                 return 0;
 967         }
 968
 969         err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 970         if (err)
 971                 return err;
 972         zd->dev->type = ARPHRD_ETHER;
 973         switch(*mode) {
 974                 case IW_MODE_MONITOR:
 975                         monitor = 1;
 976                         zd->dev->type = ARPHRD_IEEE80211;
 977                         /* Make sure we are no longer associated with by
 978                            setting an 'impossible' essid.
 979                            (otherwise we mess up firmware)
 980                          */
 981                         zd1201_join(zd, "\0-*#\0", 5);
 982                         /* Put port in pIBSS */
 983                 case 8: /* No pseudo-IBSS in wireless extensions (yet) */
 984                         porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
 985                         break;
 986                 case IW_MODE_ADHOC:
 987                         porttype = ZD1201_PORTTYPE_IBSS;
 988                         break;
 989                 case IW_MODE_INFRA:
 990                         porttype = ZD1201_PORTTYPE_BSS;
 991                         break;
 992                 default:
 993                         return -EINVAL;
 994         }
 995
 996         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
 997         if (err)
 998                 return err;
 999         if (zd->monitor && !monitor) {
1000                         zd1201_disable(zd);
1001                         *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
1002                         memcpy(buffer+2, zd->essid, zd->essidlen);
1003                         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
1004                             buffer, IW_ESSID_MAX_SIZE+2, 1);
1005                         if (err)
1006                                 return err;
1007         }
1008         zd->monitor = monitor;
1009         /* If monitor mode is set we don't actually turn it on here since it
1010          * is done during mac reset anyway (see zd1201_mac_enable).
1011          */
1012         zd1201_mac_reset(zd);
1013
1014         return 0;
1015 }
1016
1017 static int zd1201_get_mode(struct net_device *dev,
1018     struct iw_request_info *info, __u32 *mode, char *extra)
1019 {
1020         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1021         short porttype;
1022         int err;
1023
1024         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1025         if (err)
1026                 return err;
1027         switch(porttype) {
1028                 case ZD1201_PORTTYPE_IBSS:
1029                         *mode = IW_MODE_ADHOC;
1030                         break;
1031                 case ZD1201_PORTTYPE_BSS:
1032                         *mode = IW_MODE_INFRA;
1033                         break;
1034                 case ZD1201_PORTTYPE_WDS:
1035                         *mode = IW_MODE_REPEAT;
1036                         break;
1037                 case ZD1201_PORTTYPE_PSEUDOIBSS:
1038                         *mode = 8;/* No Pseudo-IBSS... */
1039                         break;
1040                 case ZD1201_PORTTYPE_AP:
1041                         *mode = IW_MODE_MASTER;
1042                         break;
1043                 default:
1044                         dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1045                             porttype);
1046                         *mode = IW_MODE_AUTO;
1047         }
1048         if (zd->monitor)
1049                 *mode = IW_MODE_MONITOR;
1050
1051         return 0;
1052 }
1053
1054 static int zd1201_get_range(struct net_device *dev,
1055     struct iw_request_info *info, struct iw_point *wrq, char *extra)
1056 {
1057         struct iw_range *range = (struct iw_range *)extra;
1058
1059         wrq->length = sizeof(struct iw_range);
1060         memset(range, 0, sizeof(struct iw_range));
1061         range->we_version_compiled = WIRELESS_EXT;
1062         range->we_version_source = WIRELESS_EXT;
1063
1064         range->max_qual.qual = 128;
1065         range->max_qual.level = 128;
1066         range->max_qual.noise = 128;
1067         range->max_qual.updated = 7;
1068
1069         range->encoding_size[0] = 5;
1070         range->encoding_size[1] = 13;
1071         range->num_encoding_sizes = 2;
1072         range->max_encoding_tokens = ZD1201_NUMKEYS;
1073
1074         range->num_bitrates = 4;
1075         range->bitrate[0] = 1000000;
1076         range->bitrate[1] = 2000000;
1077         range->bitrate[2] = 5500000;
1078         range->bitrate[3] = 11000000;
1079
1080         range->min_rts = 0;
1081         range->min_frag = ZD1201_FRAGMIN;
1082         range->max_rts = ZD1201_RTSMAX;
1083         range->min_frag = ZD1201_FRAGMAX;
1084
1085         return 0;
1086 }
1087
1088 /*      Little bit of magic here: we only get the quality if we poll
1089  *      for it, and we never get an actual request to trigger such
1090  *      a poll. Therefore we 'assume' that the user will soon ask for
1091  *      the stats after asking the bssid.
1092  */
1093 static int zd1201_get_wap(struct net_device *dev,
1094     struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1095 {
1096         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1097         unsigned char buffer[6];
1098
1099         if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1100                 /* Unfortunately the quality and noise reported is useless.
1101                    they seem to be accumulators that increase until you
1102                    read them, unless we poll on a fixed interval we can't
1103                    use them
1104                  */
1105                 /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1106                 zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1107                 /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1108                 zd->iwstats.qual.updated = 2;
1109         }
1110
1111         return zd1201_getconfig(zd, ZD1201_RID_CURRENTBSSID, ap_addr->sa_data, 6);
1112 }
1113
1114 static int zd1201_set_scan(struct net_device *dev,
1115     struct iw_request_info *info, struct iw_point *srq, char *extra)
1116 {
1117         /* We do everything in get_scan */
1118         return 0;
1119 }
1120
1121 static int zd1201_get_scan(struct net_device *dev,
1122     struct iw_request_info *info, struct iw_point *srq, char *extra)
1123 {
1124         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1125         int err, i, j, enabled_save;
1126         struct iw_event iwe;
1127         char *cev = extra;
1128         char *end_buf = extra + IW_SCAN_MAX_DATA;
1129
1130         /* No scanning in AP mode */
1131         if (zd->ap)
1132                 return -EOPNOTSUPP;
1133
1134         /* Scan doesn't seem to work if disabled */
1135         enabled_save = zd->mac_enabled;
1136         zd1201_enable(zd);
1137
1138         zd->rxdatas = 0;
1139         err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE,
1140              ZD1201_INQ_SCANRESULTS, 0, 0);
1141         if (err)
1142                 return err;
1143
1144         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1145         if (!zd->rxlen)
1146                 return -EIO;
1147
1148         if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1149                 return -EIO;
1150
1151         for(i=8; i<zd->rxlen; i+=62) {
1152                 iwe.cmd = SIOCGIWAP;
1153                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1154                 memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1155                 cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_ADDR_LEN);
1156
1157                 iwe.cmd = SIOCGIWESSID;
1158                 iwe.u.data.length = zd->rxdata[i+16];
1159                 iwe.u.data.flags = 1;
1160                 cev = iwe_stream_add_point(cev, end_buf, &iwe, zd->rxdata+i+18);
1161
1162                 iwe.cmd = SIOCGIWMODE;
1163                 if (zd->rxdata[i+14]&0x01)
1164                         iwe.u.mode = IW_MODE_MASTER;
1165                 else
1166                         iwe.u.mode = IW_MODE_ADHOC;
1167                 cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_UINT_LEN);
1168
1169                 iwe.cmd = SIOCGIWFREQ;
1170                 iwe.u.freq.m = zd->rxdata[i+0];
1171                 iwe.u.freq.e = 0;
1172                 cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_FREQ_LEN);
1173
1174                 iwe.cmd = SIOCGIWRATE;
1175                 iwe.u.bitrate.fixed = 0;
1176                 iwe.u.bitrate.disabled = 0;
1177                 for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
1178                         iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
1179                         cev=iwe_stream_add_event(cev, end_buf, &iwe,
1180                             IW_EV_PARAM_LEN);
1181                 }
1182
1183                 iwe.cmd = SIOCGIWENCODE;
1184                 iwe.u.data.length = 0;
1185                 if (zd->rxdata[i+14]&0x10)
1186                         iwe.u.data.flags = IW_ENCODE_ENABLED;
1187                 else
1188                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1189                 cev = iwe_stream_add_point(cev, end_buf, &iwe, NULL);
1190
1191                 iwe.cmd = IWEVQUAL;
1192                 iwe.u.qual.qual = zd->rxdata[i+4];
1193                 iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
1194                 iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
1195                 iwe.u.qual.updated = 7;
1196                 cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_QUAL_LEN);
1197         }
1198
1199         if (!enabled_save)
1200                 zd1201_disable(zd);
1201
1202         srq->length = cev - extra;
1203         srq->flags = 0;
1204
1205         return 0;
1206 }
1207
1208 static int zd1201_set_essid(struct net_device *dev,
1209     struct iw_request_info *info, struct iw_point *data, char *essid)
1210 {
1211         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1212
1213         if (data->length > IW_ESSID_MAX_SIZE)
1214                 return -EINVAL;
1215         if (data->length < 1)
1216                 data->length = 1;
1217         zd->essidlen = data->length;
1218         memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1219         memcpy(zd->essid, essid, data->length);
1220         return zd1201_join(zd, zd->essid, zd->essidlen);
1221 }
1222
1223 static int zd1201_get_essid(struct net_device *dev,
1224     struct iw_request_info *info, struct iw_point *data, char *essid)
1225 {
1226         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1227
1228         memcpy(essid, zd->essid, zd->essidlen);
1229         data->flags = 1;
1230         data->length = zd->essidlen;
1231
1232         return 0;
1233 }
1234
1235 static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1236     struct iw_point *data, char *nick)
1237 {
1238         strcpy(nick, "zd1201");
1239         data->flags = 1;
1240         data->length = strlen(nick);
1241         return 0;
1242 }
1243
1244 static int zd1201_set_rate(struct net_device *dev,
1245     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1246 {
1247         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1248         short rate;
1249         int err;
1250
1251         switch (rrq->value) {
1252                 case 1000000:
1253                         rate = ZD1201_RATEB1;
1254                         break;
1255                 case 2000000:
1256                         rate = ZD1201_RATEB2;
1257                         break;
1258                 case 5500000:
1259                         rate = ZD1201_RATEB5;
1260                         break;
1261                 case 11000000:
1262                 default:
1263                         rate = ZD1201_RATEB11;
1264                         break;
1265         }
1266         if (!rrq->fixed) { /* Also enable all lower bitrates */
1267                 rate |= rate-1;
1268         }
1269
1270         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1271         if (err)
1272                 return err;
1273
1274         return zd1201_mac_reset(zd);
1275 }
1276
1277 static int zd1201_get_rate(struct net_device *dev,
1278     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1279 {
1280         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1281         short rate;
1282         int err;
1283
1284         err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1285         if (err)
1286                 return err;
1287
1288         switch(rate) {
1289                 case 1:
1290                         rrq->value = 1000000;
1291                         break;
1292                 case 2:
1293                         rrq->value = 2000000;
1294                         break;
1295                 case 5:
1296                         rrq->value = 5500000;
1297                         break;
1298                 case 11:
1299                         rrq->value = 11000000;
1300                         break;
1301                 default:
1302                         rrq->value = 0;
1303         }
1304         rrq->fixed = 0;
1305         rrq->disabled = 0;
1306
1307         return 0;
1308 }
1309
1310 static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1311     struct iw_param *rts, char *extra)
1312 {
1313         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1314         int err;
1315         short val = rts->value;
1316
1317         if (rts->disabled || !rts->fixed)
1318                 val = ZD1201_RTSMAX;
1319         if (val > ZD1201_RTSMAX)
1320                 return -EINVAL;
1321         if (val < 0)
1322                 return -EINVAL;
1323
1324         err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1325         if (err)
1326                 return err;
1327         return zd1201_mac_reset(zd);
1328 }
1329
1330 static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1331     struct iw_param *rts, char *extra)
1332 {
1333         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1334         short rtst;
1335         int err;
1336
1337         err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1338         if (err)
1339                 return err;
1340         rts->value = rtst;
1341         rts->disabled = (rts->value == ZD1201_RTSMAX);
1342         rts->fixed = 1;
1343
1344         return 0;
1345 }
1346
1347 static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1348     struct iw_param *frag, char *extra)
1349 {
1350         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1351         int err;
1352         short val = frag->value;
1353
1354         if (frag->disabled || !frag->fixed)
1355                 val = ZD1201_FRAGMAX;
1356         if (val > ZD1201_FRAGMAX)
1357                 return -EINVAL;
1358         if (val < ZD1201_FRAGMIN)
1359                 return -EINVAL;
1360         if (val & 1)
1361                 return -EINVAL;
1362         err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1363         if (err)
1364                 return err;
1365         return zd1201_mac_reset(zd);
1366 }
1367
1368 static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1369     struct iw_param *frag, char *extra)
1370 {
1371         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1372         short fragt;
1373         int err;
1374
1375         err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1376         if (err)
1377                 return err;
1378         frag->value = fragt;
1379         frag->disabled = (frag->value == ZD1201_FRAGMAX);
1380         frag->fixed = 1;
1381
1382         return 0;
1383 }
1384
1385 static int zd1201_set_retry(struct net_device *dev,
1386     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1387 {
1388         return 0;
1389 }
1390
1391 static int zd1201_get_retry(struct net_device *dev,
1392     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1393 {
1394         return 0;
1395 }
1396
1397 static int zd1201_set_encode(struct net_device *dev,
1398     struct iw_request_info *info, struct iw_point *erq, char *key)
1399 {
1400         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1401         short i;
1402         int err, rid;
1403
1404         if (erq->length > ZD1201_MAXKEYLEN)
1405                 return -EINVAL;
1406
1407         i = (erq->flags & IW_ENCODE_INDEX)-1;
1408         if (i == -1) {
1409                 err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1410                 if (err)
1411                         return err;
1412         } else {
1413                 err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1414                 if (err)
1415                         return err;
1416         }
1417
1418         if (i < 0 || i >= ZD1201_NUMKEYS)
1419                 return -EINVAL;
1420
1421         rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1422         err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1423         if (err)
1424                 return err;
1425         zd->encode_keylen[i] = erq->length;
1426         memcpy(zd->encode_keys[i], key, erq->length);
1427
1428         i=0;
1429         if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1430                 i |= 0x01;
1431                 zd->encode_enabled = 1;
1432         } else
1433                 zd->encode_enabled = 0;
1434         if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1435                 i |= 0x02;
1436                 zd->encode_restricted = 1;
1437         } else
1438                 zd->encode_restricted = 0;
1439         err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1440         if (err)
1441                 return err;
1442
1443         if (zd->encode_enabled)
1444                 i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1445         else
1446                 i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1447         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1448         if (err)
1449                 return err;
1450
1451         return zd1201_mac_reset(zd);
1452 }
1453
1454 static int zd1201_get_encode(struct net_device *dev,
1455     struct iw_request_info *info, struct iw_point *erq, char *key)
1456 {
1457         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1458         short i;
1459         int err;
1460
1461         if (zd->encode_enabled)
1462                 erq->flags = IW_ENCODE_ENABLED;
1463         else
1464                 erq->flags = IW_ENCODE_DISABLED;
1465         if (zd->encode_restricted)
1466                 erq->flags |= IW_ENCODE_RESTRICTED;
1467         else
1468                 erq->flags |= IW_ENCODE_OPEN;
1469
1470         i = (erq->flags & IW_ENCODE_INDEX) -1;
1471         if (i == -1) {
1472                 err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1473                 if (err)
1474                         return err;
1475         }
1476         if (i<0 || i>= ZD1201_NUMKEYS)
1477                 return -EINVAL;
1478
1479         erq->flags |= i+1;
1480
1481         erq->length = zd->encode_keylen[i];
1482         memcpy(key, zd->encode_keys[i], erq->length);
1483
1484         return 0;
1485 }
1486
1487 static int zd1201_set_power(struct net_device *dev,
1488     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1489 {
1490         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1491         short enabled, duration, level;
1492         int err;
1493
1494         enabled = vwrq->disabled ? 0 : 1;
1495         if (enabled) {
1496                 if (vwrq->flags & IW_POWER_PERIOD) {
1497                         duration = vwrq->value;
1498                         err = zd1201_setconfig16(zd,
1499                             ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1500                         if (err)
1501                                 return err;
1502                         goto out;
1503                 }
1504                 if (vwrq->flags & IW_POWER_TIMEOUT) {
1505                         err = zd1201_getconfig16(zd,
1506                             ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1507                         if (err)
1508                                 return err;
1509                         level = vwrq->value * 4 / duration;
1510                         if (level > 4)
1511                                 level = 4;
1512                         if (level < 0)
1513                                 level = 0;
1514                         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1515                             level);
1516                         if (err)
1517                                 return err;
1518                         goto out;
1519                 }
1520                 return -EINVAL;
1521         }
1522 out:
1523         return zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1524 }
1525
1526 static int zd1201_get_power(struct net_device *dev,
1527     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1528 {
1529         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1530         short enabled, level, duration;
1531         int err;
1532
1533         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1534         if (err)
1535                 return err;
1536         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1537         if (err)
1538                 return err;
1539         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1540         if (err)
1541                 return err;
1542         vwrq->disabled = enabled ? 0 : 1;
1543         if (vwrq->flags & IW_POWER_TYPE) {
1544                 if (vwrq->flags & IW_POWER_PERIOD) {
1545                         vwrq->value = duration;
1546                         vwrq->flags = IW_POWER_PERIOD;
1547                 } else {
1548                         vwrq->value = duration * level / 4;
1549                         vwrq->flags = IW_POWER_TIMEOUT;
1550                 }
1551         }
1552         if (vwrq->flags & IW_POWER_MODE) {
1553                 if (enabled && level)
1554                         vwrq->flags = IW_POWER_UNICAST_R;
1555                 else
1556                         vwrq->flags = IW_POWER_ALL_R;
1557         }
1558
1559         return 0;
1560 }
1561
1562
1563 static const iw_handler zd1201_iw_handler[] =
1564 {
1565         (iw_handler) zd1201_config_commit,      /* SIOCSIWCOMMIT */
1566         (iw_handler) zd1201_get_name,           /* SIOCGIWNAME */
1567         (iw_handler) NULL,                      /* SIOCSIWNWID */
1568         (iw_handler) NULL,                      /* SIOCGIWNWID */
1569         (iw_handler) zd1201_set_freq,           /* SIOCSIWFREQ */
1570         (iw_handler) zd1201_get_freq,           /* SIOCGIWFREQ */
1571         (iw_handler) zd1201_set_mode,           /* SIOCSIWMODE */
1572         (iw_handler) zd1201_get_mode,           /* SIOCGIWMODE */
1573         (iw_handler) NULL,                      /* SIOCSIWSENS */
1574         (iw_handler) NULL,                      /* SIOCGIWSENS */
1575         (iw_handler) NULL,                      /* SIOCSIWRANGE */
1576         (iw_handler) zd1201_get_range,           /* SIOCGIWRANGE */
1577         (iw_handler) NULL,                      /* SIOCSIWPRIV */
1578         (iw_handler) NULL,                      /* SIOCGIWPRIV */
1579         (iw_handler) NULL,                      /* SIOCSIWSTATS */
1580         (iw_handler) NULL,                      /* SIOCGIWSTATS */
1581         (iw_handler) NULL,                      /* SIOCSIWSPY */
1582         (iw_handler) NULL,                      /* SIOCGIWSPY */
1583         (iw_handler) NULL,                      /* -- hole -- */
1584         (iw_handler) NULL,                      /* -- hole -- */
1585         (iw_handler) NULL/*zd1201_set_wap*/,            /* SIOCSIWAP */
1586         (iw_handler) zd1201_get_wap,            /* SIOCGIWAP */
1587         (iw_handler) NULL,                      /* -- hole -- */
1588         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
1589         (iw_handler) zd1201_set_scan,           /* SIOCSIWSCAN */
1590         (iw_handler) zd1201_get_scan,           /* SIOCGIWSCAN */
1591         (iw_handler) zd1201_set_essid,          /* SIOCSIWESSID */
1592         (iw_handler) zd1201_get_essid,          /* SIOCGIWESSID */
1593         (iw_handler) NULL,                      /* SIOCSIWNICKN */
1594         (iw_handler) zd1201_get_nick,           /* SIOCGIWNICKN */
1595         (iw_handler) NULL,                      /* -- hole -- */
1596         (iw_handler) NULL,                      /* -- hole -- */
1597         (iw_handler) zd1201_set_rate,           /* SIOCSIWRATE */
1598         (iw_handler) zd1201_get_rate,           /* SIOCGIWRATE */
1599         (iw_handler) zd1201_set_rts,            /* SIOCSIWRTS */
1600         (iw_handler) zd1201_get_rts,            /* SIOCGIWRTS */
1601         (iw_handler) zd1201_set_frag,           /* SIOCSIWFRAG */
1602         (iw_handler) zd1201_get_frag,           /* SIOCGIWFRAG */
1603         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
1604         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
1605         (iw_handler) zd1201_set_retry,          /* SIOCSIWRETRY */
1606         (iw_handler) zd1201_get_retry,          /* SIOCGIWRETRY */
1607         (iw_handler) zd1201_set_encode,         /* SIOCSIWENCODE */
1608         (iw_handler) zd1201_get_encode,         /* SIOCGIWENCODE */
1609         (iw_handler) zd1201_set_power,          /* SIOCSIWPOWER */
1610         (iw_handler) zd1201_get_power,          /* SIOCGIWPOWER */
1611 };
1612
1613 static int zd1201_set_hostauth(struct net_device *dev,
1614     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1615 {
1616         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1617
1618         if (!zd->ap)
1619                 return -EOPNOTSUPP;
1620
1621         return zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1622 }
1623
1624 static int zd1201_get_hostauth(struct net_device *dev,
1625     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1626 {
1627         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1628         short hostauth;
1629         int err;
1630
1631         if (!zd->ap)
1632                 return -EOPNOTSUPP;
1633
1634         err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1635         if (err)
1636                 return err;
1637         rrq->value = hostauth;
1638         rrq->fixed = 1;
1639
1640         return 0;
1641 }
1642
1643 static int zd1201_auth_sta(struct net_device *dev,
1644     struct iw_request_info *info, struct sockaddr *sta, char *extra)
1645 {
1646         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1647         unsigned char buffer[10];
1648
1649         if (!zd->ap)
1650                 return -EOPNOTSUPP;
1651
1652         memcpy(buffer, sta->sa_data, ETH_ALEN);
1653         *(short*)(buffer+6) = 0;        /* 0==success, 1==failure */
1654         *(short*)(buffer+8) = 0;
1655
1656         return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1657 }
1658
1659 static int zd1201_set_maxassoc(struct net_device *dev,
1660     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1661 {
1662         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1663         int err;
1664
1665         if (!zd->ap)
1666                 return -EOPNOTSUPP;
1667
1668         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1669         if (err)
1670                 return err;
1671         return 0;
1672 }
1673
1674 static int zd1201_get_maxassoc(struct net_device *dev,
1675     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1676 {
1677         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1678         short maxassoc;
1679         int err;
1680
1681         if (!zd->ap)
1682                 return -EOPNOTSUPP;
1683
1684         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1685         if (err)
1686                 return err;
1687         rrq->value = maxassoc;
1688         rrq->fixed = 1;
1689
1690         return 0;
1691 }
1692
1693 static const iw_handler zd1201_private_handler[] = {
1694         (iw_handler) zd1201_set_hostauth,       /* ZD1201SIWHOSTAUTH */
1695         (iw_handler) zd1201_get_hostauth,       /* ZD1201GIWHOSTAUTH */
1696         (iw_handler) zd1201_auth_sta,           /* ZD1201SIWAUTHSTA */
1697         (iw_handler) NULL,                      /* nothing to get */
1698         (iw_handler) zd1201_set_maxassoc,       /* ZD1201SIMAXASSOC */
1699         (iw_handler) zd1201_get_maxassoc,       /* ZD1201GIMAXASSOC */
1700 };
1701
1702 static const struct iw_priv_args zd1201_private_args[] = {
1703         { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1704             IW_PRIV_TYPE_NONE, "sethostauth" },
1705         { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1706             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1707         { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1708             IW_PRIV_TYPE_NONE, "authstation" },
1709         { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1710             IW_PRIV_TYPE_NONE, "setmaxassoc" },
1711         { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1712             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1713 };
1714
1715 static const struct iw_handler_def zd1201_iw_handlers = {
1716         .num_standard           = ARRAY_SIZE(zd1201_iw_handler),
1717         .num_private            = ARRAY_SIZE(zd1201_private_handler),
1718         .num_private_args       = ARRAY_SIZE(zd1201_private_args),
1719         .standard               = (iw_handler *)zd1201_iw_handler,
1720         .private                = (iw_handler *)zd1201_private_handler,
1721         .private_args           = (struct iw_priv_args *) zd1201_private_args,
1722         .get_wireless_stats     = zd1201_get_wireless_stats,
1723 };
1724
1725 static int zd1201_probe(struct usb_interface *interface,
1726                         const struct usb_device_id *id)
1727 {
1728         struct zd1201 *zd;
1729         struct usb_device *usb;
1730         int err;
1731         short porttype;
1732         char buf[IW_ESSID_MAX_SIZE+2];
1733
1734         usb = interface_to_usbdev(interface);
1735
1736         zd = kzalloc(sizeof(struct zd1201), GFP_KERNEL);
1737         if (!zd)
1738                 return -ENOMEM;
1739         zd->ap = ap;
1740         zd->usb = usb;
1741         zd->removed = 0;
1742         init_waitqueue_head(&zd->rxdataq);
1743         INIT_HLIST_HEAD(&zd->fraglist);
1744
1745         err = zd1201_fw_upload(usb, zd->ap);
1746         if (err) {
1747                 dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
1748                 goto err_zd;
1749         }
1750
1751         zd->endp_in = 1;
1752         zd->endp_out = 1;
1753         zd->endp_out2 = 2;
1754         zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1755         zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1756         if (!zd->rx_urb || !zd->tx_urb)
1757                 goto err_zd;
1758
1759         mdelay(100);
1760         err = zd1201_drvr_start(zd);
1761         if (err)
1762                 goto err_zd;
1763
1764         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
1765         if (err)
1766                 goto err_start;
1767
1768         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
1769             ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
1770         if (err)
1771                 goto err_start;
1772
1773         zd->dev = alloc_etherdev(0);
1774         if (!zd->dev)
1775                 goto err_start;
1776
1777         zd->dev->priv = zd;
1778         zd->dev->open = zd1201_net_open;
1779         zd->dev->stop = zd1201_net_stop;
1780         zd->dev->get_stats = zd1201_get_stats;
1781         zd->dev->wireless_handlers =
1782             (struct iw_handler_def *)&zd1201_iw_handlers;
1783         zd->dev->hard_start_xmit = zd1201_hard_start_xmit;
1784         zd->dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
1785         zd->dev->tx_timeout = zd1201_tx_timeout;
1786         zd->dev->set_multicast_list = zd1201_set_multicast;
1787         zd->dev->set_mac_address = zd1201_set_mac_address;
1788         strcpy(zd->dev->name, "wlan%d");
1789
1790         err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR,
1791             zd->dev->dev_addr, zd->dev->addr_len);
1792         if (err)
1793                 goto err_net;
1794
1795         /* Set wildcard essid to match zd->essid */
1796         *(__le16 *)buf = cpu_to_le16(0);
1797         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
1798             IW_ESSID_MAX_SIZE+2, 1);
1799         if (err)
1800                 goto err_net;
1801
1802         if (zd->ap)
1803                 porttype = ZD1201_PORTTYPE_AP;
1804         else
1805                 porttype = ZD1201_PORTTYPE_BSS;
1806         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1807         if (err)
1808                 goto err_net;
1809
1810         SET_NETDEV_DEV(zd->dev, &usb->dev);
1811
1812         err = register_netdev(zd->dev);
1813         if (err)
1814                 goto err_net;
1815         dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
1816             zd->dev->name);
1817
1818         usb_set_intfdata(interface, zd);
1819         zd1201_enable(zd);      /* zd1201 likes to startup enabled, */
1820         zd1201_disable(zd);     /* interfering with all the wifis in range */
1821         return 0;
1822
1823 err_net:
1824         free_netdev(zd->dev);
1825 err_start:
1826         /* Leave the device in reset state */
1827         zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
1828 err_zd:
1829         usb_free_urb(zd->tx_urb);
1830         usb_free_urb(zd->rx_urb);
1831         kfree(zd);
1832         return err;
1833 }
1834
1835 static void zd1201_disconnect(struct usb_interface *interface)
1836 {
1837         struct zd1201 *zd=(struct zd1201 *)usb_get_intfdata(interface);
1838         struct hlist_node *node, *node2;
1839         struct zd1201_frag *frag;
1840
1841         if (!zd)
1842                 return;
1843         usb_set_intfdata(interface, NULL);
1844         if (zd->dev) {
1845                 unregister_netdev(zd->dev);
1846                 free_netdev(zd->dev);
1847         }
1848
1849         hlist_for_each_entry_safe(frag, node, node2, &zd->fraglist, fnode) {
1850                 hlist_del_init(&frag->fnode);
1851                 kfree_skb(frag->skb);
1852                 kfree(frag);
1853         }
1854
1855         if (zd->tx_urb) {
1856                 usb_kill_urb(zd->tx_urb);
1857                 usb_free_urb(zd->tx_urb);
1858         }
1859         if (zd->rx_urb) {
1860                 usb_kill_urb(zd->rx_urb);
1861                 usb_free_urb(zd->rx_urb);
1862         }
1863         kfree(zd);
1864 }
1865
1866 #ifdef CONFIG_PM
1867
1868 static int zd1201_suspend(struct usb_interface *interface,
1869                            pm_message_t message)
1870 {
1871         struct zd1201 *zd = usb_get_intfdata(interface);
1872
1873         netif_device_detach(zd->dev);
1874
1875         zd->was_enabled = zd->mac_enabled;
1876
1877         if (zd->was_enabled)
1878                 return zd1201_disable(zd);
1879         else
1880                 return 0;
1881 }
1882
1883 static int zd1201_resume(struct usb_interface *interface)
1884 {
1885         struct zd1201 *zd = usb_get_intfdata(interface);
1886
1887         if (!zd || !zd->dev)
1888                 return -ENODEV;
1889
1890         netif_device_attach(zd->dev);
1891
1892         if (zd->was_enabled)
1893                 return zd1201_enable(zd);
1894         else
1895                 return 0;
1896 }
1897
1898 #else
1899
1900 #define zd1201_suspend NULL
1901 #define zd1201_resume  NULL
1902
1903 #endif
1904
1905 static struct usb_driver zd1201_usb = {
1906         .name = "zd1201",
1907         .probe = zd1201_probe,
1908         .disconnect = zd1201_disconnect,
1909         .id_table = zd1201_table,
1910         .suspend = zd1201_suspend,
1911         .resume = zd1201_resume,
1912 };
1913
1914 static int __init zd1201_init(void)
1915 {
1916         return usb_register(&zd1201_usb);
1917 }
1918
1919 static void __exit zd1201_cleanup(void)
1920 {
1921         usb_deregister(&zd1201_usb);
1922 }
1923
1924 module_init(zd1201_init);
1925 module_exit(zd1201_cleanup);