drivers/usb/net/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 <ieee802_11.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 = 0;      /* 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, struct pt_regs *regs)
 116 {
 117         struct zd1201 *zd = urb->context;
 118
 119         switch(urb->status) {
 120                 case -EILSEQ:
 121                 case -ENODEV:
 122                 case -ETIMEDOUT:
 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, struct pt_regs *regs)
 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, struct pt_regs *regs)
 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                 free = 1;
 198                 goto exit;
 199         }
 200
 201         switch(urb->status) {
 202                 case -EILSEQ:
 203                 case -ENODEV:
 204                 case -ETIMEDOUT:
 205                 case -ENOENT:
 206                 case -EPIPE:
 207                 case -EOVERFLOW:
 208                 case -ESHUTDOWN:
 209                         dev_warn(&zd->usb->dev, "%s: rx urb failed: %d\n",
 210                             zd->dev->name, urb->status);
 211                         free = 1;
 212                         goto exit;
 213         }
 214
 215         if (urb->status != 0 || urb->actual_length == 0)
 216                 goto resubmit;
 217
 218         type = data[0];
 219         if (type == ZD1201_PACKET_EVENTSTAT || type == ZD1201_PACKET_RESOURCE) {
 220                 memcpy(zd->rxdata, data, urb->actual_length);
 221                 zd->rxlen = urb->actual_length;
 222                 zd->rxdatas = 1;
 223                 wake_up(&zd->rxdataq);
 224         }
 225         /* Info frame */
 226         if (type == ZD1201_PACKET_INQUIRE) {
 227                 int i = 0;
 228                 unsigned short infotype, framelen, copylen;
 229                 framelen = le16_to_cpu(*(__le16*)&data[4]);
 230                 infotype = le16_to_cpu(*(__le16*)&data[6]);
 231
 232                 if (infotype == ZD1201_INF_LINKSTATUS) {
 233                         short linkstatus;
 234
 235                         linkstatus = le16_to_cpu(*(__le16*)&data[8]);
 236                         switch(linkstatus) {
 237                                 case 1:
 238                                         netif_carrier_on(zd->dev);
 239                                         break;
 240                                 case 2:
 241                                         netif_carrier_off(zd->dev);
 242                                         break;
 243                                 case 3:
 244                                         netif_carrier_off(zd->dev);
 245                                         break;
 246                                 case 4:
 247                                         netif_carrier_on(zd->dev);
 248                                         break;
 249                                 default:
 250                                         netif_carrier_off(zd->dev);
 251                         }
 252                         goto resubmit;
 253                 }
 254                 if (infotype == ZD1201_INF_ASSOCSTATUS) {
 255                         short status = le16_to_cpu(*(__le16*)(data+8));
 256                         int event;
 257                         union iwreq_data wrqu;
 258
 259                         switch (status) {
 260                                 case ZD1201_ASSOCSTATUS_STAASSOC:
 261                                 case ZD1201_ASSOCSTATUS_REASSOC:
 262                                         event = IWEVREGISTERED;
 263                                         break;
 264                                 case ZD1201_ASSOCSTATUS_DISASSOC:
 265                                 case ZD1201_ASSOCSTATUS_ASSOCFAIL:
 266                                 case ZD1201_ASSOCSTATUS_AUTHFAIL:
 267                                 default:
 268                                         event = IWEVEXPIRED;
 269                         }
 270                         memcpy(wrqu.addr.sa_data, data+10, ETH_ALEN);
 271                         wrqu.addr.sa_family = ARPHRD_ETHER;
 272
 273                         /* Send event to user space */
 274                         wireless_send_event(zd->dev, event, &wrqu, NULL);
 275
 276                         goto resubmit;
 277                 }
 278                 if (infotype == ZD1201_INF_AUTHREQ) {
 279                         union iwreq_data wrqu;
 280
 281                         memcpy(wrqu.addr.sa_data, data+8, ETH_ALEN);
 282                         wrqu.addr.sa_family = ARPHRD_ETHER;
 283                         /* There isn't a event that trully fits this request.
 284                            We assume that userspace will be smart enough to
 285                            see a new station being expired and sends back a
 286                            authstation ioctl to authorize it. */
 287                         wireless_send_event(zd->dev, IWEVEXPIRED, &wrqu, NULL);
 288                         goto resubmit;
 289                 }
 290                 /* Other infotypes are handled outside this handler */
 291                 zd->rxlen = 0;
 292                 while (i < urb->actual_length) {
 293                         copylen = le16_to_cpu(*(__le16*)&data[i+2]);
 294                         /* Sanity check, sometimes we get junk */
 295                         if (copylen+zd->rxlen > sizeof(zd->rxdata))
 296                                 break;
 297                         memcpy(zd->rxdata+zd->rxlen, data+i+4, copylen);
 298                         zd->rxlen += copylen;
 299                         i += 64;
 300                 }
 301                 if (i >= urb->actual_length) {
 302                         zd->rxdatas = 1;
 303                         wake_up(&zd->rxdataq);
 304                 }
 305                 goto  resubmit;
 306         }
 307         /* Actual data */
 308         if (data[urb->actual_length-1] == ZD1201_PACKET_RXDATA) {
 309                 int datalen = urb->actual_length-1;
 310                 unsigned short len, fc, seq;
 311                 struct hlist_node *node;
 312
 313                 len = ntohs(*(__be16 *)&data[datalen-2]);
 314                 if (len>datalen)
 315                         len=datalen;
 316                 fc = le16_to_cpu(*(__le16 *)&data[datalen-16]);
 317                 seq = le16_to_cpu(*(__le16 *)&data[datalen-24]);
 318
 319                 if(zd->monitor) {
 320                         if (datalen < 24)
 321                                 goto resubmit;
 322                         if (!(skb = dev_alloc_skb(datalen+24)))
 323                                 goto resubmit;
 324
 325                         memcpy(skb_put(skb, 2), &data[datalen-16], 2);
 326                         memcpy(skb_put(skb, 2), &data[datalen-2], 2);
 327                         memcpy(skb_put(skb, 6), &data[datalen-14], 6);
 328                         memcpy(skb_put(skb, 6), &data[datalen-22], 6);
 329                         memcpy(skb_put(skb, 6), &data[datalen-8], 6);
 330                         memcpy(skb_put(skb, 2), &data[datalen-24], 2);
 331                         memcpy(skb_put(skb, len), data, len);
 332                         skb->dev = zd->dev;
 333                         skb->dev->last_rx = jiffies;
 334                         skb->protocol = eth_type_trans(skb, zd->dev);
 335                         zd->stats.rx_packets++;
 336                         zd->stats.rx_bytes += skb->len;
 337                         netif_rx(skb);
 338                         goto resubmit;
 339                 }
 340
 341                 if ((seq & IEEE802_11_SCTL_FRAG) ||
 342                     (fc & IEEE802_11_FCTL_MOREFRAGS)) {
 343                         struct zd1201_frag *frag = NULL;
 344                         char *ptr;
 345
 346                         if (datalen<14)
 347                                 goto resubmit;
 348                         if ((seq & IEEE802_11_SCTL_FRAG) == 0) {
 349                                 frag = kmalloc(sizeof(*frag), GFP_ATOMIC);
 350                                 if (!frag)
 351                                         goto resubmit;
 352                                 skb = dev_alloc_skb(IEEE802_11_DATA_LEN +14+2);
 353                                 if (!skb) {
 354                                         kfree(frag);
 355                                         goto resubmit;
 356                                 }
 357                                 frag->skb = skb;
 358                                 frag->seq = seq & IEEE802_11_SCTL_SEQ;
 359                                 skb_reserve(skb, 2);
 360                                 memcpy(skb_put(skb, 12), &data[datalen-14], 12);
 361                                 memcpy(skb_put(skb, 2), &data[6], 2);
 362                                 memcpy(skb_put(skb, len), data+8, len);
 363                                 hlist_add_head(&frag->fnode, &zd->fraglist);
 364                                 goto resubmit;
 365                         }
 366                         hlist_for_each_entry(frag, node, &zd->fraglist, fnode)
 367                                 if(frag->seq == (seq&IEEE802_11_SCTL_SEQ))
 368                                         break;
 369                         if (!frag)
 370                                 goto resubmit;
 371                         skb = frag->skb;
 372                         ptr = skb_put(skb, len);
 373                         if (ptr)
 374                                 memcpy(ptr, data+8, len);
 375                         if (fc & IEEE802_11_FCTL_MOREFRAGS)
 376                                 goto resubmit;
 377                         hlist_del_init(&frag->fnode);
 378                         kfree(frag);
 379                         /* Fallthrough */
 380                 } else {
 381                         if (datalen<14)
 382                                 goto resubmit;
 383                         skb = dev_alloc_skb(len + 14 + 2);
 384                         if (!skb)
 385                                 goto resubmit;
 386                         skb_reserve(skb, 2);
 387                         memcpy(skb_put(skb, 12), &data[datalen-14], 12);
 388                         memcpy(skb_put(skb, 2), &data[6], 2);
 389                         memcpy(skb_put(skb, len), data+8, len);
 390                 }
 391                 skb->dev = zd->dev;
 392                 skb->dev->last_rx = jiffies;
 393                 skb->protocol = eth_type_trans(skb, zd->dev);
 394                 zd->stats.rx_packets++;
 395                 zd->stats.rx_bytes += skb->len;
 396                 netif_rx(skb);
 397         }
 398 resubmit:
 399         memset(data, 0, ZD1201_RXSIZE);
 400
 401         urb->status = 0;
 402         urb->dev = zd->usb;
 403         if(usb_submit_urb(urb, GFP_ATOMIC))
 404                 free = 1;
 405
 406 exit:
 407         if (free) {
 408                 zd->rxlen = 0;
 409                 zd->rxdatas = 1;
 410                 wake_up(&zd->rxdataq);
 411                 kfree(urb->transfer_buffer);
 412         }
 413         return;
 414 }
 415
 416 static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
 417         unsigned int riddatalen)
 418 {
 419         int err;
 420         int i = 0;
 421         int code;
 422         int rid_fid;
 423         int length;
 424         unsigned char *pdata;
 425
 426         zd->rxdatas = 0;
 427         err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
 428         if (err)
 429                 return err;
 430
 431         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 432         if (!zd->rxlen)
 433                 return -EIO;
 434
 435         code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
 436         rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
 437         length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
 438         if (length > zd->rxlen)
 439                 length = zd->rxlen-6;
 440
 441         /* If access bit is not on, then error */
 442         if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
 443                 return -EINVAL;
 444
 445         /* Not enough buffer for allocating data */
 446         if (riddatalen != (length - 4)) {
 447                 dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
 448                     riddatalen, zd->rxlen, length, rid, rid_fid);
 449                 return -ENODATA;
 450         }
 451
 452         zd->rxdatas = 0;
 453         /* Issue SetRxRid commnd */
 454         err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
 455         if (err)
 456                 return err;
 457
 458         /* Receive RID record from resource packets */
 459         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 460         if (!zd->rxlen)
 461                 return -EIO;
 462
 463         if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
 464                 dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
 465                     zd->rxdata[zd->rxlen-1]);
 466                 return -EINVAL;
 467         }
 468
 469         /* Set the data pointer and received data length */
 470         pdata = zd->rxdata;
 471         length = zd->rxlen;
 472
 473         do {
 474                 int  actual_length;
 475
 476                 actual_length = (length > 64) ? 64 : length;
 477
 478                 if(pdata[0] != 0x3) {
 479                         dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
 480                             pdata[0]);
 481                         return -EINVAL;
 482                 }
 483
 484                 if (actual_length != 64) {
 485                         /* Trim the last packet type byte */
 486                         actual_length--;
 487                 }
 488
 489                 /* Skip the 4 bytes header (RID length and RID) */
 490                 if(i == 0) {
 491                         pdata += 8;
 492                         actual_length -= 8;
 493                 }
 494                 else {
 495                         pdata += 4;
 496                         actual_length -= 4;
 497                 }
 498
 499                 memcpy(riddata, pdata, actual_length);
 500                 riddata += actual_length;
 501                 pdata += actual_length;
 502                 length -= 64;
 503                 i++;
 504         } while (length > 0);
 505
 506         return 0;
 507 }
 508
 509 /*
 510  *      resreq:
 511  *              byte    type
 512  *              byte    sequence
 513  *              u16     reserved
 514  *              byte    data[12]
 515  *      total: 16
 516  */
 517 static int zd1201_setconfig(struct zd1201 *zd, int rid, void *buf, int len, int wait)
 518 {
 519         int err;
 520         unsigned char *request;
 521         int reqlen;
 522         char seq=0;
 523         struct urb *urb;
 524         unsigned int gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
 525
 526         len += 4;                       /* first 4 are for header */
 527
 528         zd->rxdatas = 0;
 529         zd->rxlen = 0;
 530         for (seq=0; len > 0; seq++) {
 531                 request = kmalloc(16, gfp_mask);
 532                 if (!request)
 533                         return -ENOMEM;
 534                 urb = usb_alloc_urb(0, gfp_mask);
 535                 if (!urb) {
 536                         kfree(request);
 537                         return -ENOMEM;
 538                 }
 539                 memset(request, 0, 16);
 540                 reqlen = len>12 ? 12 : len;
 541                 request[0] = ZD1201_USB_RESREQ;
 542                 request[1] = seq;
 543                 request[2] = 0;
 544                 request[3] = 0;
 545                 if (request[1] == 0) {
 546                         /* add header */
 547                         *(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
 548                         *(__le16*)&request[6] = cpu_to_le16(rid);
 549                         memcpy(request+8, buf, reqlen-4);
 550                         buf += reqlen-4;
 551                 } else {
 552                         memcpy(request+4, buf, reqlen);
 553                         buf += reqlen;
 554                 }
 555
 556                 len -= reqlen;
 557
 558                 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
 559                     zd->endp_out2), request, 16, zd1201_usbfree, zd);
 560                 err = usb_submit_urb(urb, gfp_mask);
 561                 if (err)
 562                         goto err;
 563         }
 564
 565         request = kmalloc(16, gfp_mask);
 566         if (!request)
 567                 return -ENOMEM;
 568         urb = usb_alloc_urb(0, gfp_mask);
 569         if (!urb) {
 570                 kfree(request);
 571                 return -ENOMEM;
 572         }
 573         *((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
 574         *((__le16*)&request[4]) =
 575             cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
 576         *((__le16*)&request[6]) = cpu_to_le16(rid);
 577         *((__le16*)&request[8]) = cpu_to_le16(0);
 578         *((__le16*)&request[10]) = cpu_to_le16(0);
 579         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 580              request, 16, zd1201_usbfree, zd);
 581         err = usb_submit_urb(urb, gfp_mask);
 582         if (err)
 583                 goto err;
 584
 585         if (wait) {
 586                 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 587                 if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
 588                         dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
 589                 }
 590         }
 591
 592         return 0;
 593 err:
 594         kfree(request);
 595         usb_free_urb(urb);
 596         return err;
 597 }
 598
 599 static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
 600 {
 601         int err;
 602         __le16 zdval;
 603
 604         err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
 605         if (err)
 606                 return err;
 607         *val = le16_to_cpu(zdval);
 608         return 0;
 609 }
 610
 611 static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
 612 {
 613         __le16 zdval = cpu_to_le16(val);
 614         return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
 615 }
 616
 617 static int zd1201_drvr_start(struct zd1201 *zd)
 618 {
 619         int err, i;
 620         short max;
 621         __le16 zdmax;
 622         unsigned char *buffer;
 623
 624         buffer = kmalloc(ZD1201_RXSIZE, GFP_KERNEL);
 625         if (!buffer)
 626                 return -ENOMEM;
 627         memset(buffer, 0, ZD1201_RXSIZE);
 628
 629         usb_fill_bulk_urb(zd->rx_urb, zd->usb,
 630             usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
 631             zd1201_usbrx, zd);
 632
 633         err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
 634         if (err)
 635                 goto err_buffer;
 636
 637         err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
 638         if (err)
 639                 goto err_urb;
 640
 641         err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
 642             sizeof(__le16));
 643         if (err)
 644                 goto err_urb;
 645
 646         max = le16_to_cpu(zdmax);
 647         for (i=0; i<max; i++) {
 648                 err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
 649                 if (err)
 650                         goto err_urb;
 651         }
 652
 653         return 0;
 654
 655 err_urb:
 656         usb_kill_urb(zd->rx_urb);
 657         return err;
 658 err_buffer:
 659         kfree(buffer);
 660         return err;
 661 }
 662
 663 /*      Magic alert: The firmware doesn't seem to like the MAC state being
 664  *      toggled in promisc (aka monitor) mode.
 665  *      (It works a number of times, but will halt eventually)
 666  *      So we turn it of before disabling and on after enabling if needed.
 667  */
 668 static int zd1201_enable(struct zd1201 *zd)
 669 {
 670         int err;
 671
 672         if (zd->mac_enabled)
 673                 return 0;
 674
 675         err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
 676         if (!err)
 677                 zd->mac_enabled = 1;
 678
 679         if (zd->monitor)
 680                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
 681
 682         return err;
 683 }
 684
 685 static int zd1201_disable(struct zd1201 *zd)
 686 {
 687         int err;
 688
 689         if (!zd->mac_enabled)
 690                 return 0;
 691         if (zd->monitor) {
 692                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 693                 if (err)
 694                         return err;
 695         }
 696
 697         err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
 698         if (!err)
 699                 zd->mac_enabled = 0;
 700         return err;
 701 }
 702
 703 static int zd1201_mac_reset(struct zd1201 *zd)
 704 {
 705         if (!zd->mac_enabled)
 706                 return 0;
 707         zd1201_disable(zd);
 708         return zd1201_enable(zd);
 709 }
 710
 711 static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
 712 {
 713         int err, val;
 714         char buf[IW_ESSID_MAX_SIZE+2];
 715
 716         err = zd1201_disable(zd);
 717         if (err)
 718                 return err;
 719
 720         val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
 721         val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
 722         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
 723         if (err)
 724                 return err;
 725
 726         *(__le16 *)buf = cpu_to_le16(essidlen);
 727         memcpy(buf+2, essid, essidlen);
 728         if (!zd->ap) {  /* Normal station */
 729                 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
 730                     IW_ESSID_MAX_SIZE+2, 1);
 731                 if (err)
 732                         return err;
 733         } else {        /* AP */
 734                 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
 735                     IW_ESSID_MAX_SIZE+2, 1);
 736                 if (err)
 737                         return err;
 738         }
 739
 740         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 741             zd->dev->dev_addr, zd->dev->addr_len, 1);
 742         if (err)
 743                 return err;
 744
 745         err = zd1201_enable(zd);
 746         if (err)
 747                 return err;
 748
 749         msleep(100);
 750         return 0;
 751 }
 752
 753 static int zd1201_net_open(struct net_device *dev)
 754 {
 755         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 756
 757         /* Start MAC with wildcard if no essid set */
 758         if (!zd->mac_enabled)
 759                 zd1201_join(zd, zd->essid, zd->essidlen);
 760         netif_start_queue(dev);
 761
 762         return 0;
 763 }
 764
 765 static int zd1201_net_stop(struct net_device *dev)
 766 {
 767         netif_stop_queue(dev);
 768
 769         return 0;
 770 }
 771
 772 /*
 773         RFC 1042 encapsulates Ethernet frames in 802.11 frames
 774         by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
 775         (0x00, 0x00, 0x00). Zd requires an additional padding, copy
 776         of ethernet addresses, length of the standard RFC 1042 packet
 777         and a command byte (which is nul for tx).
 778
 779         tx frame (from Wlan NG):
 780         RFC 1042:
 781                 llc             0xAA 0xAA 0x03 (802.2 LLC)
 782                 snap            0x00 0x00 0x00 (Ethernet encapsulated)
 783                 type            2 bytes, Ethernet type field
 784                 payload         (minus eth header)
 785         Zydas specific:
 786                 padding         1B if (skb->len+8+1)%64==0
 787                 Eth MAC addr    12 bytes, Ethernet MAC addresses
 788                 length          2 bytes, RFC 1042 packet length
 789                                 (llc+snap+type+payload)
 790                 zd              1 null byte, zd1201 packet type
 791  */
 792 static int zd1201_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 793 {
 794         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 795         unsigned char *txbuf = zd->txdata;
 796         int txbuflen, pad = 0, err;
 797         struct urb *urb = zd->tx_urb;
 798
 799         if (!zd->mac_enabled || zd->monitor) {
 800                 zd->stats.tx_dropped++;
 801                 kfree_skb(skb);
 802                 return 0;
 803         }
 804         netif_stop_queue(dev);
 805
 806         txbuflen = skb->len + 8 + 1;
 807         if (txbuflen%64 == 0) {
 808                 pad = 1;
 809                 txbuflen++;
 810         }
 811         txbuf[0] = 0xAA;
 812         txbuf[1] = 0xAA;
 813         txbuf[2] = 0x03;
 814         txbuf[3] = 0x00;        /* rfc1042 */
 815         txbuf[4] = 0x00;
 816         txbuf[5] = 0x00;
 817
 818         memcpy(txbuf+6, skb->data+12, skb->len-12);
 819         if (pad)
 820                 txbuf[skb->len-12+6]=0;
 821         memcpy(txbuf+skb->len-12+6+pad, skb->data, 12);
 822         *(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
 823         txbuf[txbuflen-1] = 0;
 824
 825         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
 826             txbuf, txbuflen, zd1201_usbtx, zd);
 827
 828         err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
 829         if (err) {
 830                 zd->stats.tx_errors++;
 831                 netif_start_queue(dev);
 832                 return err;
 833         }
 834         zd->stats.tx_packets++;
 835         zd->stats.tx_bytes += skb->len;
 836         dev->trans_start = jiffies;
 837         kfree_skb(skb);
 838
 839         return 0;
 840 }
 841
 842 static void zd1201_tx_timeout(struct net_device *dev)
 843 {
 844         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 845
 846         if (!zd)
 847                 return;
 848         dev_warn(&zd->usb->dev, "%s: TX timeout, shooting down urb\n",
 849             dev->name);
 850         zd->tx_urb->transfer_flags |= URB_ASYNC_UNLINK;
 851         usb_unlink_urb(zd->tx_urb);
 852         zd->stats.tx_errors++;
 853         /* Restart the timeout to quiet the watchdog: */
 854         dev->trans_start = jiffies;
 855 }
 856
 857 static int zd1201_set_mac_address(struct net_device *dev, void *p)
 858 {
 859         struct sockaddr *addr = p;
 860         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 861         int err;
 862
 863         if (!zd)
 864                 return -ENODEV;
 865
 866         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 867             addr->sa_data, dev->addr_len, 1);
 868         if (err)
 869                 return err;
 870         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
 871
 872         return zd1201_mac_reset(zd);
 873 }
 874
 875 static struct net_device_stats *zd1201_get_stats(struct net_device *dev)
 876 {
 877         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 878
 879         return &zd->stats;
 880 }
 881
 882 static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
 883 {
 884         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 885
 886         return &zd->iwstats;
 887 }
 888
 889 static void zd1201_set_multicast(struct net_device *dev)
 890 {
 891         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 892         struct dev_mc_list *mc = dev->mc_list;
 893         unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
 894         int i;
 895
 896         if (dev->mc_count > ZD1201_MAXMULTI)
 897                 return;
 898
 899         for (i=0; i<dev->mc_count; i++) {
 900                 memcpy(reqbuf+i*ETH_ALEN, mc->dmi_addr, ETH_ALEN);
 901                 mc = mc->next;
 902         }
 903         zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
 904             dev->mc_count*ETH_ALEN, 0);
 905
 906 }
 907
 908 static int zd1201_config_commit(struct net_device *dev,
 909     struct iw_request_info *info, struct iw_point *data, char *essid)
 910 {
 911         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 912
 913         return zd1201_mac_reset(zd);
 914 }
 915
 916 static int zd1201_get_name(struct net_device *dev,
 917     struct iw_request_info *info, char *name, char *extra)
 918 {
 919         strcpy(name, "IEEE 802.11b");
 920
 921         return 0;
 922 }
 923
 924 static int zd1201_set_freq(struct net_device *dev,
 925     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 926 {
 927         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 928         short channel = 0;
 929         int err;
 930
 931         if (freq->e == 0)
 932                 channel = freq->m;
 933         else {
 934                 if (freq->m >= 2482)
 935                         channel = 14;
 936                 if (freq->m >= 2407)
 937                         channel = (freq->m-2407)/5;
 938         }
 939
 940         err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
 941         if (err)
 942                 return err;
 943
 944         zd1201_mac_reset(zd);
 945
 946         return 0;
 947 }
 948
 949 static int zd1201_get_freq(struct net_device *dev,
 950     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 951 {
 952         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 953         short channel;
 954         int err;
 955
 956         err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
 957         if (err)
 958                 return err;
 959         freq->e = 0;
 960         freq->m = channel;
 961
 962         return 0;
 963 }
 964
 965 static int zd1201_set_mode(struct net_device *dev,
 966     struct iw_request_info *info, __u32 *mode, char *extra)
 967 {
 968         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 969         short porttype, monitor = 0;
 970         unsigned char buffer[IW_ESSID_MAX_SIZE+2];
 971         int err;
 972
 973         if (zd->ap) {
 974                 if (*mode != IW_MODE_MASTER)
 975                         return -EINVAL;
 976                 return 0;
 977         }
 978
 979         err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 980         if (err)
 981                 return err;
 982         zd->dev->type = ARPHRD_ETHER;
 983         switch(*mode) {
 984                 case IW_MODE_MONITOR:
 985                         monitor = 1;
 986                         zd->dev->type = ARPHRD_IEEE80211;
 987                         /* Make sure we are no longer associated with by
 988                            setting an 'impossible' essid.
 989                            (otherwise we mess up firmware)
 990                          */
 991                         zd1201_join(zd, "\0-*#\0", 5);
 992                         /* Put port in pIBSS */
 993                 case 8: /* No pseudo-IBSS in wireless extensions (yet) */
 994                         porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
 995                         break;
 996                 case IW_MODE_ADHOC:
 997                         porttype = ZD1201_PORTTYPE_IBSS;
 998                         break;
 999                 case IW_MODE_INFRA:
1000                         porttype = ZD1201_PORTTYPE_BSS;
1001                         break;
1002                 default:
1003                         return -EINVAL;
1004         }
1005
1006         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1007         if (err)
1008                 return err;
1009         if (zd->monitor && !monitor) {
1010                         zd1201_disable(zd);
1011                         *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
1012                         memcpy(buffer+2, zd->essid, zd->essidlen);
1013                         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
1014                             buffer, IW_ESSID_MAX_SIZE+2, 1);
1015                         if (err)
1016                                 return err;
1017         }
1018         zd->monitor=monitor;
1019         /* If monitor mode is set we don't actually turn it on here since it
1020          * is done during mac reset anyway (see zd1201_mac_enable).
1021          */
1022
1023         zd1201_mac_reset(zd);
1024
1025         return 0;
1026 }
1027
1028 static int zd1201_get_mode(struct net_device *dev,
1029     struct iw_request_info *info, __u32 *mode, char *extra)
1030 {
1031         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1032         short porttype;
1033         int err;
1034
1035         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1036         if (err)
1037                 return err;
1038         switch(porttype) {
1039                 case ZD1201_PORTTYPE_IBSS:
1040                         *mode = IW_MODE_ADHOC;
1041                         break;
1042                 case ZD1201_PORTTYPE_BSS:
1043                         *mode = IW_MODE_INFRA;
1044                         break;
1045                 case ZD1201_PORTTYPE_WDS:
1046                         *mode = IW_MODE_REPEAT;
1047                         break;
1048                 case ZD1201_PORTTYPE_PSEUDOIBSS:
1049                         *mode = 8;/* No Pseudo-IBSS... */
1050                         break;
1051                 case ZD1201_PORTTYPE_AP:
1052                         *mode = IW_MODE_MASTER;
1053                         break;
1054                 default:
1055                         dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1056                             porttype);
1057                         *mode = IW_MODE_AUTO;
1058         }
1059         if (zd->monitor)
1060                 *mode = IW_MODE_MONITOR;
1061
1062         return 0;
1063 }
1064
1065 static int zd1201_get_range(struct net_device *dev,
1066     struct iw_request_info *info, struct iw_point *wrq, char *extra)
1067 {
1068         struct iw_range *range = (struct iw_range *)extra;
1069
1070         wrq->length = sizeof(struct iw_range);
1071         memset(range, 0, sizeof(struct iw_range));
1072         range->we_version_compiled = WIRELESS_EXT;
1073         range->we_version_source = WIRELESS_EXT;
1074
1075         range->max_qual.qual = 128;
1076         range->max_qual.level = 128;
1077         range->max_qual.noise = 128;
1078         range->max_qual.updated = 7;
1079
1080         range->encoding_size[0] = 5;
1081         range->encoding_size[1] = 13;
1082         range->num_encoding_sizes = 2;
1083         range->max_encoding_tokens = ZD1201_NUMKEYS;
1084
1085         range->num_bitrates = 4;
1086         range->bitrate[0] = 1000000;
1087         range->bitrate[1] = 2000000;
1088         range->bitrate[2] = 5500000;
1089         range->bitrate[3] = 11000000;
1090
1091         range->min_rts = 0;
1092         range->min_frag = ZD1201_FRAGMIN;
1093         range->max_rts = ZD1201_RTSMAX;
1094         range->min_frag = ZD1201_FRAGMAX;
1095
1096         return 0;
1097 }
1098
1099 /*      Little bit of magic here: we only get the quality if we poll
1100  *      for it, and we never get an actual request to trigger such
1101  *      a poll. Therefore we 'assume' that the user will soon ask for
1102  *      the stats after asking the bssid.
1103  */
1104 static int zd1201_get_wap(struct net_device *dev,
1105     struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1106 {
1107         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1108         unsigned char buffer[6];
1109
1110         if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1111                 /* Unfortunately the quality and noise reported is useless.
1112                    they seem to be accumulators that increase until you
1113                    read them, unless we poll on a fixed interval we can't
1114                    use them
1115                  */
1116                 /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1117                 zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1118                 /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1119                 zd->iwstats.qual.updated = 2;
1120         }
1121
1122         return zd1201_getconfig(zd,ZD1201_RID_CURRENTBSSID,ap_addr->sa_data,6);
1123 }
1124
1125 static int zd1201_set_scan(struct net_device *dev,
1126     struct iw_request_info *info, struct iw_point *srq, char *extra)
1127 {
1128         /* We do everything in get_scan */
1129         return 0;
1130 }
1131
1132 static int zd1201_get_scan(struct net_device *dev,
1133     struct iw_request_info *info, struct iw_point *srq, char *extra)
1134 {
1135         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1136         int err, i, j, enabled_save;
1137         struct iw_event iwe;
1138         char *cev = extra;
1139         char *end_buf = extra + IW_SCAN_MAX_DATA;
1140
1141         /* No scanning in AP mode */
1142         if (zd->ap)
1143                 return -EOPNOTSUPP;
1144
1145         /* Scan doesn't seem to work if disabled */
1146         enabled_save = zd->mac_enabled;
1147         zd1201_enable(zd);
1148
1149         zd->rxdatas = 0;
1150         err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE,
1151              ZD1201_INQ_SCANRESULTS, 0, 0);
1152         if (err)
1153                 return err;
1154
1155         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1156         if (!zd->rxlen)
1157                 return -EIO;
1158
1159         if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1160                 return -EIO;
1161
1162         for(i=8; i<zd->rxlen; i+=62) {
1163                 iwe.cmd = SIOCGIWAP;
1164                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1165                 memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1166                 cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_ADDR_LEN);
1167
1168                 iwe.cmd = SIOCGIWESSID;
1169                 iwe.u.data.length = zd->rxdata[i+16];
1170                 iwe.u.data.flags = 1;
1171                 cev = iwe_stream_add_point(cev, end_buf, &iwe, zd->rxdata+i+18);
1172
1173                 iwe.cmd = SIOCGIWMODE;
1174                 if (zd->rxdata[i+14]&0x01)
1175                         iwe.u.mode = IW_MODE_MASTER;
1176                 else
1177                         iwe.u.mode = IW_MODE_ADHOC;
1178                 cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_UINT_LEN);
1179
1180                 iwe.cmd = SIOCGIWFREQ;
1181                 iwe.u.freq.m = zd->rxdata[i+0];
1182                 iwe.u.freq.e = 0;
1183                 cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_FREQ_LEN);
1184
1185                 iwe.cmd = SIOCGIWRATE;
1186                 iwe.u.bitrate.fixed = 0;
1187                 iwe.u.bitrate.disabled = 0;
1188                 for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
1189                         iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
1190                         cev=iwe_stream_add_event(cev, end_buf, &iwe,
1191                             IW_EV_PARAM_LEN);
1192                 }
1193
1194                 iwe.cmd = SIOCGIWENCODE;
1195                 iwe.u.data.length = 0;
1196                 if (zd->rxdata[i+14]&0x10)
1197                         iwe.u.data.flags = IW_ENCODE_ENABLED;
1198                 else
1199                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1200                 cev = iwe_stream_add_point(cev, end_buf, &iwe, NULL);
1201
1202                 iwe.cmd = IWEVQUAL;
1203                 iwe.u.qual.qual = zd->rxdata[i+4];
1204                 iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
1205                 iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
1206                 iwe.u.qual.updated = 7;
1207                 cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_QUAL_LEN);
1208         }
1209
1210         if (!enabled_save)
1211                 zd1201_disable(zd);
1212
1213         srq->length = cev - extra;
1214         srq->flags = 0;
1215
1216         return 0;
1217 }
1218
1219 static int zd1201_set_essid(struct net_device *dev,
1220     struct iw_request_info *info, struct iw_point *data, char *essid)
1221 {
1222         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1223
1224         if (data->length > IW_ESSID_MAX_SIZE)
1225                 return -EINVAL;
1226         if (data->length < 1)
1227                 data->length = 1;
1228         zd->essidlen = data->length-1;
1229         memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1230         memcpy(zd->essid, essid, data->length);
1231         return zd1201_join(zd, zd->essid, zd->essidlen);
1232 }
1233
1234 static int zd1201_get_essid(struct net_device *dev,
1235     struct iw_request_info *info, struct iw_point *data, char *essid)
1236 {
1237         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1238
1239         memcpy(essid, zd->essid, zd->essidlen);
1240         data->flags = 1;
1241         data->length = zd->essidlen;
1242
1243         return 0;
1244 }
1245
1246 static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1247     struct iw_point *data, char *nick)
1248 {
1249         strcpy(nick, "zd1201");
1250         data->flags = 1;
1251         data->length = strlen(nick);
1252         return 0;
1253 }
1254
1255 static int zd1201_set_rate(struct net_device *dev,
1256     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1257 {
1258         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1259         short rate;
1260         int err;
1261
1262         switch (rrq->value) {
1263                 case 1000000:
1264                         rate = ZD1201_RATEB1;
1265                         break;
1266                 case 2000000:
1267                         rate = ZD1201_RATEB2;
1268                         break;
1269                 case 5500000:
1270                         rate = ZD1201_RATEB5;
1271                         break;
1272                 case 11000000:
1273                 default:
1274                         rate = ZD1201_RATEB11;
1275                         break;
1276         }
1277         if (!rrq->fixed) { /* Also enable all lower bitrates */
1278                 rate |= rate-1;
1279         }
1280
1281         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1282         if (err)
1283                 return err;
1284
1285         return zd1201_mac_reset(zd);
1286 }
1287
1288 static int zd1201_get_rate(struct net_device *dev,
1289     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1290 {
1291         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1292         short rate;
1293         int err;
1294
1295         err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1296         if (err)
1297                 return err;
1298
1299         switch(rate) {
1300                 case 1:
1301                         rrq->value = 1000000;
1302                         break;
1303                 case 2:
1304                         rrq->value = 2000000;
1305                         break;
1306                 case 5:
1307                         rrq->value = 5500000;
1308                         break;
1309                 case 11:
1310                         rrq->value = 11000000;
1311                         break;
1312                 default:
1313                         rrq->value = 0;
1314         }
1315         rrq->fixed = 0;
1316         rrq->disabled = 0;
1317
1318         return 0;
1319 }
1320
1321 static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1322     struct iw_param *rts, char *extra)
1323 {
1324         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1325         int err;
1326         short val = rts->value;
1327
1328         if (rts->disabled || !rts->fixed)
1329                 val = ZD1201_RTSMAX;
1330         if (val > ZD1201_RTSMAX)
1331                 return -EINVAL;
1332         if (val < 0)
1333                 return -EINVAL;
1334
1335         err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1336         if (err)
1337                 return err;
1338         return zd1201_mac_reset(zd);
1339 }
1340
1341 static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1342     struct iw_param *rts, char *extra)
1343 {
1344         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1345         short rtst;
1346         int err;
1347
1348         err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1349         if (err)
1350                 return err;
1351         rts->value = rtst;
1352         rts->disabled = (rts->value == ZD1201_RTSMAX);
1353         rts->fixed = 1;
1354
1355         return 0;
1356 }
1357
1358 static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1359     struct iw_param *frag, char *extra)
1360 {
1361         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1362         int err;
1363         short val = frag->value;
1364
1365         if (frag->disabled || !frag->fixed)
1366                 val = ZD1201_FRAGMAX;
1367         if (val > ZD1201_FRAGMAX)
1368                 return -EINVAL;
1369         if (val < ZD1201_FRAGMIN)
1370                 return -EINVAL;
1371         if (val & 1)
1372                 return -EINVAL;
1373         err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1374         if (err)
1375                 return err;
1376         return zd1201_mac_reset(zd);
1377 }
1378
1379 static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1380     struct iw_param *frag, char *extra)
1381 {
1382         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1383         short fragt;
1384         int err;
1385
1386         err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1387         if (err)
1388                 return err;
1389         frag->value = fragt;
1390         frag->disabled = (frag->value == ZD1201_FRAGMAX);
1391         frag->fixed = 1;
1392
1393         return 0;
1394 }
1395
1396 static int zd1201_set_retry(struct net_device *dev,
1397     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1398 {
1399         return 0;
1400 }
1401
1402 static int zd1201_get_retry(struct net_device *dev,
1403     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1404 {
1405         return 0;
1406 }
1407
1408 static int zd1201_set_encode(struct net_device *dev,
1409     struct iw_request_info *info, struct iw_point *erq, char *key)
1410 {
1411         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1412         short i;
1413         int err, rid;
1414
1415         if (erq->length > ZD1201_MAXKEYLEN)
1416                 return -EINVAL;
1417
1418         i = (erq->flags & IW_ENCODE_INDEX)-1;
1419         if (i == -1) {
1420                 err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1421                 if (err)
1422                         return err;
1423         } else {
1424                 err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1425                 if (err)
1426                         return err;
1427         }
1428
1429         if (i < 0 || i >= ZD1201_NUMKEYS)
1430                 return -EINVAL;
1431
1432         rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1433         err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1434         if (err)
1435                 return err;
1436         zd->encode_keylen[i] = erq->length;
1437         memcpy(zd->encode_keys[i], key, erq->length);
1438
1439         i=0;
1440         if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1441                 i |= 0x01;
1442                 zd->encode_enabled = 1;
1443         } else
1444                 zd->encode_enabled = 0;
1445         if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1446                 i |= 0x02;
1447                 zd->encode_restricted = 1;
1448         } else
1449                 zd->encode_restricted = 0;
1450         err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1451         if (err)
1452                 return err;
1453
1454         if (zd->encode_enabled)
1455                 i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1456         else
1457                 i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1458         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1459         if (err)
1460                 return err;
1461
1462         return zd1201_mac_reset(zd);
1463 }
1464
1465 static int zd1201_get_encode(struct net_device *dev,
1466     struct iw_request_info *info, struct iw_point *erq, char *key)
1467 {
1468         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1469         short i;
1470         int err;
1471
1472         if (zd->encode_enabled)
1473                 erq->flags = IW_ENCODE_ENABLED;
1474         else
1475                 erq->flags = IW_ENCODE_DISABLED;
1476         if (zd->encode_restricted)
1477                 erq->flags |= IW_ENCODE_RESTRICTED;
1478         else
1479                 erq->flags |= IW_ENCODE_OPEN;
1480
1481         i = (erq->flags & IW_ENCODE_INDEX) -1;
1482         if (i == -1) {
1483                 err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1484                 if (err)
1485                         return err;
1486         }
1487         if (i<0 || i>= ZD1201_NUMKEYS)
1488                 return -EINVAL;
1489
1490         erq->flags |= i+1;
1491
1492         erq->length = zd->encode_keylen[i];
1493         memcpy(key, zd->encode_keys[i], erq->length);
1494
1495         return 0;
1496 }
1497
1498 static int zd1201_set_power(struct net_device *dev,
1499     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1500 {
1501         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1502         short enabled, duration, level;
1503         int err;
1504
1505         enabled = vwrq->disabled ? 0 : 1;
1506         if (enabled) {
1507                 if (vwrq->flags & IW_POWER_PERIOD) {
1508                         duration = vwrq->value;
1509                         err = zd1201_setconfig16(zd,
1510                             ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1511                         if (err)
1512                                 return err;
1513                         goto out;
1514                 }
1515                 if (vwrq->flags & IW_POWER_TIMEOUT) {
1516                         err = zd1201_getconfig16(zd,
1517                             ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1518                         if (err)
1519                                 return err;
1520                         level = vwrq->value * 4 / duration;
1521                         if (level > 4)
1522                                 level = 4;
1523                         if (level < 0)
1524                                 level = 0;
1525                         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1526                             level);
1527                         if (err)
1528                                 return err;
1529                         goto out;
1530                 }
1531                 return -EINVAL;
1532         }
1533 out:
1534         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1535         if (err)
1536                 return err;
1537
1538         return 0;
1539 }
1540
1541 static int zd1201_get_power(struct net_device *dev,
1542     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1543 {
1544         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1545         short enabled, level, duration;
1546         int err;
1547
1548         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1549         if (err)
1550                 return err;
1551         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1552         if (err)
1553                 return err;
1554         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1555         if (err)
1556                 return err;
1557         vwrq->disabled = enabled ? 0 : 1;
1558         if (vwrq->flags & IW_POWER_TYPE) {
1559                 if (vwrq->flags & IW_POWER_PERIOD) {
1560                         vwrq->value = duration;
1561                         vwrq->flags = IW_POWER_PERIOD;
1562                 } else {
1563                         vwrq->value = duration * level / 4;
1564                         vwrq->flags = IW_POWER_TIMEOUT;
1565                 }
1566         }
1567         if (vwrq->flags & IW_POWER_MODE) {
1568                 if (enabled && level)
1569                         vwrq->flags = IW_POWER_UNICAST_R;
1570                 else
1571                         vwrq->flags = IW_POWER_ALL_R;
1572         }
1573
1574         return 0;
1575 }
1576
1577
1578 static const iw_handler zd1201_iw_handler[] =
1579 {
1580         (iw_handler) zd1201_config_commit,      /* SIOCSIWCOMMIT */
1581         (iw_handler) zd1201_get_name,           /* SIOCGIWNAME */
1582         (iw_handler) NULL,                      /* SIOCSIWNWID */
1583         (iw_handler) NULL,                      /* SIOCGIWNWID */
1584         (iw_handler) zd1201_set_freq,           /* SIOCSIWFREQ */
1585         (iw_handler) zd1201_get_freq,           /* SIOCGIWFREQ */
1586         (iw_handler) zd1201_set_mode,           /* SIOCSIWMODE */
1587         (iw_handler) zd1201_get_mode,           /* SIOCGIWMODE */
1588         (iw_handler) NULL,                      /* SIOCSIWSENS */
1589         (iw_handler) NULL,                      /* SIOCGIWSENS */
1590         (iw_handler) NULL,                      /* SIOCSIWRANGE */
1591         (iw_handler) zd1201_get_range,           /* SIOCGIWRANGE */
1592         (iw_handler) NULL,                      /* SIOCSIWPRIV */
1593         (iw_handler) NULL,                      /* SIOCGIWPRIV */
1594         (iw_handler) NULL,                      /* SIOCSIWSTATS */
1595         (iw_handler) NULL,                      /* SIOCGIWSTATS */
1596         (iw_handler) NULL,                      /* SIOCSIWSPY */
1597         (iw_handler) NULL,                      /* SIOCGIWSPY */
1598         (iw_handler) NULL,                      /* -- hole -- */
1599         (iw_handler) NULL,                      /* -- hole -- */
1600         (iw_handler) NULL/*zd1201_set_wap*/,            /* SIOCSIWAP */
1601         (iw_handler) zd1201_get_wap,            /* SIOCGIWAP */
1602         (iw_handler) NULL,                      /* -- hole -- */
1603         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
1604         (iw_handler) zd1201_set_scan,           /* SIOCSIWSCAN */
1605         (iw_handler) zd1201_get_scan,           /* SIOCGIWSCAN */
1606         (iw_handler) zd1201_set_essid,          /* SIOCSIWESSID */
1607         (iw_handler) zd1201_get_essid,          /* SIOCGIWESSID */
1608         (iw_handler) NULL,                      /* SIOCSIWNICKN */
1609         (iw_handler) zd1201_get_nick,           /* SIOCGIWNICKN */
1610         (iw_handler) NULL,                      /* -- hole -- */
1611         (iw_handler) NULL,                      /* -- hole -- */
1612         (iw_handler) zd1201_set_rate,           /* SIOCSIWRATE */
1613         (iw_handler) zd1201_get_rate,           /* SIOCGIWRATE */
1614         (iw_handler) zd1201_set_rts,            /* SIOCSIWRTS */
1615         (iw_handler) zd1201_get_rts,            /* SIOCGIWRTS */
1616         (iw_handler) zd1201_set_frag,           /* SIOCSIWFRAG */
1617         (iw_handler) zd1201_get_frag,           /* SIOCGIWFRAG */
1618         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
1619         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
1620         (iw_handler) zd1201_set_retry,          /* SIOCSIWRETRY */
1621         (iw_handler) zd1201_get_retry,          /* SIOCGIWRETRY */
1622         (iw_handler) zd1201_set_encode,         /* SIOCSIWENCODE */
1623         (iw_handler) zd1201_get_encode,         /* SIOCGIWENCODE */
1624         (iw_handler) zd1201_set_power,          /* SIOCSIWPOWER */
1625         (iw_handler) zd1201_get_power,          /* SIOCGIWPOWER */
1626 };
1627
1628 static int zd1201_set_hostauth(struct net_device *dev,
1629     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1630 {
1631         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1632         int err;
1633
1634         if (!zd->ap)
1635                 return -EOPNOTSUPP;
1636
1637         err = zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1638         if (err)
1639                 return err;
1640         return 0;
1641 }
1642
1643 static int zd1201_get_hostauth(struct net_device *dev,
1644     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1645 {
1646         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1647         short hostauth;
1648         int err;
1649
1650         if (!zd->ap)
1651                 return -EOPNOTSUPP;
1652
1653         err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1654         if (err)
1655                 return err;
1656         rrq->value = hostauth;
1657         rrq->fixed = 1;
1658
1659         return 0;
1660 }
1661
1662 static int zd1201_auth_sta(struct net_device *dev,
1663     struct iw_request_info *info, struct sockaddr *sta, char *extra)
1664 {
1665         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1666         unsigned char buffer[10];
1667
1668         if (!zd->ap)
1669                 return -EOPNOTSUPP;
1670
1671         memcpy(buffer, sta->sa_data, ETH_ALEN);
1672         *(short*)(buffer+6) = 0;        /* 0==success, 1==failure */
1673         *(short*)(buffer+8) = 0;
1674
1675         return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1676 }
1677
1678 static int zd1201_set_maxassoc(struct net_device *dev,
1679     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1680 {
1681         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1682         int err;
1683
1684         if (!zd->ap)
1685                 return -EOPNOTSUPP;
1686
1687         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1688         if (err)
1689                 return err;
1690         return 0;
1691 }
1692
1693 static int zd1201_get_maxassoc(struct net_device *dev,
1694     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1695 {
1696         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1697         short maxassoc;
1698         int err;
1699
1700         if (!zd->ap)
1701                 return -EOPNOTSUPP;
1702
1703         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1704         if (err)
1705                 return err;
1706         rrq->value = maxassoc;
1707         rrq->fixed = 1;
1708
1709         return 0;
1710 }
1711
1712 static const iw_handler zd1201_private_handler[] = {
1713         (iw_handler) zd1201_set_hostauth,       /* ZD1201SIWHOSTAUTH */
1714         (iw_handler) zd1201_get_hostauth,       /* ZD1201GIWHOSTAUTH */
1715         (iw_handler) zd1201_auth_sta,           /* ZD1201SIWAUTHSTA */
1716         (iw_handler) NULL,                      /* nothing to get */
1717         (iw_handler) zd1201_set_maxassoc,       /* ZD1201SIMAXASSOC */
1718         (iw_handler) zd1201_get_maxassoc,       /* ZD1201GIMAXASSOC */
1719 };
1720
1721 static const struct iw_priv_args zd1201_private_args[] = {
1722         { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1723             IW_PRIV_TYPE_NONE, "sethostauth" },
1724         { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1725             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1726         { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1727             IW_PRIV_TYPE_NONE, "authstation" },
1728         { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1729             IW_PRIV_TYPE_NONE, "setmaxassoc" },
1730         { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1731             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1732 };
1733
1734 static const struct iw_handler_def zd1201_iw_handlers = {
1735         .num_standard           = sizeof(zd1201_iw_handler)/sizeof(iw_handler),
1736         .num_private            = sizeof(zd1201_private_handler)/sizeof(iw_handler),
1737         .num_private_args       = sizeof(zd1201_private_args)/sizeof(struct iw_priv_args),
1738         .standard               = (iw_handler *)zd1201_iw_handler,
1739         .private                = (iw_handler *)zd1201_private_handler,
1740         .private_args           = (struct iw_priv_args *) zd1201_private_args,
1741 };
1742
1743 static int zd1201_probe(struct usb_interface *interface,
1744                         const struct usb_device_id *id)
1745 {
1746         struct zd1201 *zd;
1747         struct usb_device *usb;
1748         int i, err;
1749         short porttype;
1750         char buf[IW_ESSID_MAX_SIZE+2];
1751
1752         usb = interface_to_usbdev(interface);
1753
1754         zd = kmalloc(sizeof(struct zd1201), GFP_KERNEL);
1755         if (!zd) {
1756                 return -ENOMEM;
1757         }
1758         memset(zd, 0, sizeof(struct zd1201));
1759         zd->ap = ap;
1760         zd->usb = usb;
1761         zd->removed = 0;
1762         init_waitqueue_head(&zd->rxdataq);
1763         INIT_HLIST_HEAD(&zd->fraglist);
1764
1765         err = zd1201_fw_upload(usb, zd->ap);
1766         if (err) {
1767                 dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
1768                 goto err_zd;
1769         }
1770
1771         zd->endp_in = 1;
1772         zd->endp_out = 1;
1773         zd->endp_out2 = 2;
1774         zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1775         zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1776         if (!zd->rx_urb || !zd->tx_urb)
1777                 goto err_zd;
1778
1779         for(i = 0; i<100; i++)
1780                 udelay(1000);
1781
1782         err = zd1201_drvr_start(zd);
1783         if (err)
1784                 goto err_zd;
1785
1786         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
1787         if (err)
1788                 goto err_start;
1789
1790         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
1791             ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
1792         if (err)
1793                 goto err_start;
1794
1795         zd->dev = alloc_etherdev(0);
1796         if (!zd->dev)
1797                 goto err_start;
1798
1799         zd->dev->priv = zd;
1800         zd->dev->open = zd1201_net_open;
1801         zd->dev->stop = zd1201_net_stop;
1802         zd->dev->get_stats = zd1201_get_stats;
1803         zd->dev->get_wireless_stats = zd1201_get_wireless_stats;
1804         zd->dev->wireless_handlers =
1805             (struct iw_handler_def *)&zd1201_iw_handlers;
1806         zd->dev->hard_start_xmit = zd1201_hard_start_xmit;
1807         zd->dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
1808         zd->dev->tx_timeout = zd1201_tx_timeout;
1809         zd->dev->set_multicast_list = zd1201_set_multicast;
1810         zd->dev->set_mac_address = zd1201_set_mac_address;
1811         strcpy(zd->dev->name, "wlan%d");
1812
1813         err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR,
1814             zd->dev->dev_addr, zd->dev->addr_len);
1815         if (err)
1816                 goto err_net;
1817
1818         /* Set wildcard essid to match zd->essid */
1819         *(__le16 *)buf = cpu_to_le16(0);
1820         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
1821             IW_ESSID_MAX_SIZE+2, 1);
1822         if (err)
1823                 goto err_net;
1824
1825         if (zd->ap)
1826                 porttype = ZD1201_PORTTYPE_AP;
1827         else
1828                 porttype = ZD1201_PORTTYPE_BSS;
1829         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1830         if (err)
1831                 goto err_net;
1832
1833         err = register_netdev(zd->dev);
1834         if (err)
1835                 goto err_net;
1836         dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
1837             zd->dev->name);
1838
1839         usb_set_intfdata(interface, zd);
1840         return 0;
1841
1842 err_net:
1843         free_netdev(zd->dev);
1844 err_start:
1845         /* Leave the device in reset state */
1846         zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
1847 err_zd:
1848         if (zd->tx_urb)
1849                 usb_free_urb(zd->tx_urb);
1850         if (zd->rx_urb)
1851                 usb_free_urb(zd->rx_urb);
1852         kfree(zd);
1853         return err;
1854 }
1855
1856 static void zd1201_disconnect(struct usb_interface *interface)
1857 {
1858         struct zd1201 *zd=(struct zd1201 *)usb_get_intfdata(interface);
1859         struct hlist_node *node, *node2;
1860         struct zd1201_frag *frag;
1861
1862         if (!zd)
1863                 return;
1864         usb_set_intfdata(interface, NULL);
1865         if (zd->dev) {
1866                 unregister_netdev(zd->dev);
1867                 free_netdev(zd->dev);
1868         }
1869
1870         hlist_for_each_entry_safe(frag, node, node2, &zd->fraglist, fnode) {
1871                 hlist_del_init(&frag->fnode);
1872                 kfree_skb(frag->skb);
1873                 kfree(frag);
1874         }
1875
1876         if (zd->tx_urb) {
1877                 usb_kill_urb(zd->tx_urb);
1878                 usb_free_urb(zd->tx_urb);
1879         }
1880         if (zd->rx_urb) {
1881                 usb_kill_urb(zd->rx_urb);
1882                 usb_free_urb(zd->rx_urb);
1883         }
1884         kfree(zd);
1885 }
1886
1887 #ifdef CONFIG_PM
1888
1889 static int zd1201_suspend(struct usb_interface *interface,
1890                            pm_message_t message)
1891 {
1892         struct zd1201 *zd = usb_get_intfdata(interface);
1893
1894         netif_device_detach(zd->dev);
1895
1896         zd->was_enabled = zd->mac_enabled;
1897
1898         if (zd->was_enabled)
1899                 return zd1201_disable(zd);
1900         else
1901                 return 0;
1902 }
1903
1904 static int zd1201_resume(struct usb_interface *interface)
1905 {
1906         struct zd1201 *zd = usb_get_intfdata(interface);
1907
1908         if (!zd || !zd->dev)
1909                 return -ENODEV;
1910
1911         netif_device_attach(zd->dev);
1912
1913         if (zd->was_enabled)
1914                 return zd1201_enable(zd);
1915         else
1916                 return 0;
1917 }
1918
1919 #else
1920
1921 #define zd1201_suspend NULL
1922 #define zd1201_resume  NULL
1923
1924 #endif
1925
1926 static struct usb_driver zd1201_usb = {
1927         .owner = THIS_MODULE,
1928         .name = "zd1201",
1929         .probe = zd1201_probe,
1930         .disconnect = zd1201_disconnect,
1931         .id_table = zd1201_table,
1932         .suspend = zd1201_suspend,
1933         .resume = zd1201_resume,
1934 };
1935
1936 static int __init zd1201_init(void)
1937 {
1938         return usb_register(&zd1201_usb);
1939 }
1940
1941 static void __exit zd1201_cleanup(void)
1942 {
1943         usb_deregister(&zd1201_usb);
1944 }
1945
1946 module_init(zd1201_init);
1947 module_exit(zd1201_cleanup);