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

   1 /*
   2  *      Driver for ZyDAS zd1201 based wireless USB devices.
   3  *
   4  *      Copyright (c) 2004, 2005 Jeroen Vreeken (pe1rxq@amsat.org)
   5  *
   6  *      This program is free software; you can redistribute it and/or
   7  *      modify it under the terms of the GNU General Public License
   8  *      version 2 as published by the Free Software Foundation.
   9  *
  10  *      Parts of this driver have been derived from a wlan-ng version
  11  *      modified by ZyDAS. They also made documentation available, thanks!
  12  *      Copyright (C) 1999 AbsoluteValue Systems, Inc.  All Rights Reserved.
  13  */
  14
  15 #include <linux/module.h>
  16 #include <linux/usb.h>
  17 #include <linux/netdevice.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/wireless.h>
  20 #include <linux/ieee80211.h>
  21 #include <net/iw_handler.h>
  22 #include <linux/string.h>
  23 #include <linux/if_arp.h>
  24 #include <linux/firmware.h>
  25 #include "zd1201.h"
  26
  27 static struct usb_device_id zd1201_table[] = {
  28         {USB_DEVICE(0x0586, 0x3400)}, /* Peabird Wireless USB Adapter */
  29         {USB_DEVICE(0x0ace, 0x1201)}, /* ZyDAS ZD1201 Wireless USB Adapter */
  30         {USB_DEVICE(0x050d, 0x6051)}, /* Belkin F5D6051 usb  adapter */
  31         {USB_DEVICE(0x0db0, 0x6823)}, /* MSI UB11B usb  adapter */
  32         {USB_DEVICE(0x1044, 0x8005)}, /* GIGABYTE GN-WLBZ201 usb adapter */
  33         {}
  34 };
  35
  36 static int ap;  /* Are we an AP or a normal station? */
  37
  38 #define ZD1201_VERSION  "0.15"
  39
  40 MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>");
  41 MODULE_DESCRIPTION("Driver for ZyDAS ZD1201 based USB Wireless adapters");
  42 MODULE_VERSION(ZD1201_VERSION);
  43 MODULE_LICENSE("GPL");
  44 module_param(ap, int, 0);
  45 MODULE_PARM_DESC(ap, "If non-zero Access Point firmware will be loaded");
  46 MODULE_DEVICE_TABLE(usb, zd1201_table);
  47
  48
  49 static int zd1201_fw_upload(struct usb_device *dev, int apfw)
  50 {
  51         const struct firmware *fw_entry;
  52         const char *data;
  53         unsigned long len;
  54         int err;
  55         unsigned char ret;
  56         char *buf;
  57         char *fwfile;
  58
  59         if (apfw)
  60                 fwfile = "zd1201-ap.fw";
  61         else
  62                 fwfile = "zd1201.fw";
  63
  64         err = request_firmware(&fw_entry, fwfile, &dev->dev);
  65         if (err) {
  66                 dev_err(&dev->dev, "Failed to load %s firmware file!\n", fwfile);
  67                 dev_err(&dev->dev, "Make sure the hotplug firmware loader is installed.\n");
  68                 dev_err(&dev->dev, "Goto http://linux-lc100020.sourceforge.net for more info.\n");
  69                 return err;
  70         }
  71
  72         data = fw_entry->data;
  73         len = fw_entry->size;
  74
  75         buf = kmalloc(1024, GFP_ATOMIC);
  76         if (!buf)
  77                 goto exit;
  78
  79         while (len > 0) {
  80                 int translen = (len > 1024) ? 1024 : len;
  81                 memcpy(buf, data, translen);
  82
  83                 err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0,
  84                     USB_DIR_OUT | 0x40, 0, 0, buf, translen,
  85                     ZD1201_FW_TIMEOUT);
  86                 if (err < 0)
  87                         goto exit;
  88
  89                 len -= translen;
  90                 data += translen;
  91         }
  92
  93         err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0x2,
  94             USB_DIR_OUT | 0x40, 0, 0, NULL, 0, ZD1201_FW_TIMEOUT);
  95         if (err < 0)
  96                 goto exit;
  97
  98         err = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 0x4,
  99             USB_DIR_IN | 0x40, 0,0, &ret, sizeof(ret), ZD1201_FW_TIMEOUT);
 100         if (err < 0)
 101                 goto exit;
 102
 103         if (ret & 0x80) {
 104                 err = -EIO;
 105                 goto exit;
 106         }
 107
 108         err = 0;
 109 exit:
 110         kfree(buf);
 111         release_firmware(fw_entry);
 112         return err;
 113 }
 114
 115 static void zd1201_usbfree(struct urb *urb)
 116 {
 117         struct zd1201 *zd = urb->context;
 118
 119         switch(urb->status) {
 120                 case -EILSEQ:
 121                 case -ENODEV:
 122                 case -ETIME:
 123                 case -ENOENT:
 124                 case -EPIPE:
 125                 case -EOVERFLOW:
 126                 case -ESHUTDOWN:
 127                         dev_warn(&zd->usb->dev, "%s: urb failed: %d\n",
 128                             zd->dev->name, urb->status);
 129         }
 130
 131         kfree(urb->transfer_buffer);
 132         usb_free_urb(urb);
 133         return;
 134 }
 135
 136 /* cmdreq message:
 137         u32 type
 138         u16 cmd
 139         u16 parm0
 140         u16 parm1
 141         u16 parm2
 142         u8  pad[4]
 143
 144         total: 4 + 2 + 2 + 2 + 2 + 4 = 16
 145 */
 146 static int zd1201_docmd(struct zd1201 *zd, int cmd, int parm0,
 147                         int parm1, int parm2)
 148 {
 149         unsigned char *command;
 150         int ret;
 151         struct urb *urb;
 152
 153         command = kmalloc(16, GFP_ATOMIC);
 154         if (!command)
 155                 return -ENOMEM;
 156
 157         *((__le32*)command) = cpu_to_le32(ZD1201_USB_CMDREQ);
 158         *((__le16*)&command[4]) = cpu_to_le16(cmd);
 159         *((__le16*)&command[6]) = cpu_to_le16(parm0);
 160         *((__le16*)&command[8]) = cpu_to_le16(parm1);
 161         *((__le16*)&command[10])= cpu_to_le16(parm2);
 162
 163         urb = usb_alloc_urb(0, GFP_ATOMIC);
 164         if (!urb) {
 165                 kfree(command);
 166                 return -ENOMEM;
 167         }
 168         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 169                           command, 16, zd1201_usbfree, zd);
 170         ret = usb_submit_urb(urb, GFP_ATOMIC);
 171         if (ret) {
 172                 kfree(command);
 173                 usb_free_urb(urb);
 174         }
 175
 176         return ret;
 177 }
 178
 179 /* Callback after sending out a packet */
 180 static void zd1201_usbtx(struct urb *urb)
 181 {
 182         struct zd1201 *zd = urb->context;
 183         netif_wake_queue(zd->dev);
 184         return;
 185 }
 186
 187 /* Incoming data */
 188 static void zd1201_usbrx(struct urb *urb)
 189 {
 190         struct zd1201 *zd = urb->context;
 191         int free = 0;
 192         unsigned char *data = urb->transfer_buffer;
 193         struct sk_buff *skb;
 194         unsigned char type;
 195
 196         if (!zd)
 197                 return;
 198
 199         switch(urb->status) {
 200                 case -EILSEQ:
 201                 case -ENODEV:
 202                 case -ETIME:
 203                 case -ENOENT:
 204                 case -EPIPE:
 205                 case -EOVERFLOW:
 206                 case -ESHUTDOWN:
 207                         dev_warn(&zd->usb->dev, "%s: rx urb failed: %d\n",
 208                             zd->dev->name, urb->status);
 209                         free = 1;
 210                         goto exit;
 211         }
 212
 213         if (urb->status != 0 || urb->actual_length == 0)
 214                 goto resubmit;
 215
 216         type = data[0];
 217         if (type == ZD1201_PACKET_EVENTSTAT || type == ZD1201_PACKET_RESOURCE) {
 218                 memcpy(zd->rxdata, data, urb->actual_length);
 219                 zd->rxlen = urb->actual_length;
 220                 zd->rxdatas = 1;
 221                 wake_up(&zd->rxdataq);
 222         }
 223         /* Info frame */
 224         if (type == ZD1201_PACKET_INQUIRE) {
 225                 int i = 0;
 226                 unsigned short infotype, framelen, copylen;
 227                 framelen = le16_to_cpu(*(__le16*)&data[4]);
 228                 infotype = le16_to_cpu(*(__le16*)&data[6]);
 229
 230                 if (infotype == ZD1201_INF_LINKSTATUS) {
 231                         short linkstatus;
 232
 233                         linkstatus = le16_to_cpu(*(__le16*)&data[8]);
 234                         switch(linkstatus) {
 235                                 case 1:
 236                                         netif_carrier_on(zd->dev);
 237                                         break;
 238                                 case 2:
 239                                         netif_carrier_off(zd->dev);
 240                                         break;
 241                                 case 3:
 242                                         netif_carrier_off(zd->dev);
 243                                         break;
 244                                 case 4:
 245                                         netif_carrier_on(zd->dev);
 246                                         break;
 247                                 default:
 248                                         netif_carrier_off(zd->dev);
 249                         }
 250                         goto resubmit;
 251                 }
 252                 if (infotype == ZD1201_INF_ASSOCSTATUS) {
 253                         short status = le16_to_cpu(*(__le16*)(data+8));
 254                         int event;
 255                         union iwreq_data wrqu;
 256
 257                         switch (status) {
 258                                 case ZD1201_ASSOCSTATUS_STAASSOC:
 259                                 case ZD1201_ASSOCSTATUS_REASSOC:
 260                                         event = IWEVREGISTERED;
 261                                         break;
 262                                 case ZD1201_ASSOCSTATUS_DISASSOC:
 263                                 case ZD1201_ASSOCSTATUS_ASSOCFAIL:
 264                                 case ZD1201_ASSOCSTATUS_AUTHFAIL:
 265                                 default:
 266                                         event = IWEVEXPIRED;
 267                         }
 268                         memcpy(wrqu.addr.sa_data, data+10, ETH_ALEN);
 269                         wrqu.addr.sa_family = ARPHRD_ETHER;
 270
 271                         /* Send event to user space */
 272                         wireless_send_event(zd->dev, event, &wrqu, NULL);
 273
 274                         goto resubmit;
 275                 }
 276                 if (infotype == ZD1201_INF_AUTHREQ) {
 277                         union iwreq_data wrqu;
 278
 279                         memcpy(wrqu.addr.sa_data, data+8, ETH_ALEN);
 280                         wrqu.addr.sa_family = ARPHRD_ETHER;
 281                         /* There isn't a event that trully fits this request.
 282                            We assume that userspace will be smart enough to
 283                            see a new station being expired and sends back a
 284                            authstation ioctl to authorize it. */
 285                         wireless_send_event(zd->dev, IWEVEXPIRED, &wrqu, NULL);
 286                         goto resubmit;
 287                 }
 288                 /* Other infotypes are handled outside this handler */
 289                 zd->rxlen = 0;
 290                 while (i < urb->actual_length) {
 291                         copylen = le16_to_cpu(*(__le16*)&data[i+2]);
 292                         /* Sanity check, sometimes we get junk */
 293                         if (copylen+zd->rxlen > sizeof(zd->rxdata))
 294                                 break;
 295                         memcpy(zd->rxdata+zd->rxlen, data+i+4, copylen);
 296                         zd->rxlen += copylen;
 297                         i += 64;
 298                 }
 299                 if (i >= urb->actual_length) {
 300                         zd->rxdatas = 1;
 301                         wake_up(&zd->rxdataq);
 302                 }
 303                 goto  resubmit;
 304         }
 305         /* Actual data */
 306         if (data[urb->actual_length-1] == ZD1201_PACKET_RXDATA) {
 307                 int datalen = urb->actual_length-1;
 308                 unsigned short len, fc, seq;
 309                 struct hlist_node *node;
 310
 311                 len = ntohs(*(__be16 *)&data[datalen-2]);
 312                 if (len>datalen)
 313                         len=datalen;
 314                 fc = le16_to_cpu(*(__le16 *)&data[datalen-16]);
 315                 seq = le16_to_cpu(*(__le16 *)&data[datalen-24]);
 316
 317                 if (zd->monitor) {
 318                         if (datalen < 24)
 319                                 goto resubmit;
 320                         if (!(skb = dev_alloc_skb(datalen+24)))
 321                                 goto resubmit;
 322
 323                         memcpy(skb_put(skb, 2), &data[datalen-16], 2);
 324                         memcpy(skb_put(skb, 2), &data[datalen-2], 2);
 325                         memcpy(skb_put(skb, 6), &data[datalen-14], 6);
 326                         memcpy(skb_put(skb, 6), &data[datalen-22], 6);
 327                         memcpy(skb_put(skb, 6), &data[datalen-8], 6);
 328                         memcpy(skb_put(skb, 2), &data[datalen-24], 2);
 329                         memcpy(skb_put(skb, len), data, len);
 330                         skb->protocol = eth_type_trans(skb, zd->dev);
 331                         zd->dev->stats.rx_packets++;
 332                         zd->dev->stats.rx_bytes += skb->len;
 333                         netif_rx(skb);
 334                         goto resubmit;
 335                 }
 336
 337                 if ((seq & IEEE80211_SCTL_FRAG) ||
 338                     (fc & IEEE80211_FCTL_MOREFRAGS)) {
 339                         struct zd1201_frag *frag = NULL;
 340                         char *ptr;
 341
 342                         if (datalen<14)
 343                                 goto resubmit;
 344                         if ((seq & IEEE80211_SCTL_FRAG) == 0) {
 345                                 frag = kmalloc(sizeof(*frag), GFP_ATOMIC);
 346                                 if (!frag)
 347                                         goto resubmit;
 348                                 skb = dev_alloc_skb(IEEE80211_MAX_DATA_LEN +14+2);
 349                                 if (!skb) {
 350                                         kfree(frag);
 351                                         goto resubmit;
 352                                 }
 353                                 frag->skb = skb;
 354                                 frag->seq = seq & IEEE80211_SCTL_SEQ;
 355                                 skb_reserve(skb, 2);
 356                                 memcpy(skb_put(skb, 12), &data[datalen-14], 12);
 357                                 memcpy(skb_put(skb, 2), &data[6], 2);
 358                                 memcpy(skb_put(skb, len), data+8, len);
 359                                 hlist_add_head(&frag->fnode, &zd->fraglist);
 360                                 goto resubmit;
 361                         }
 362                         hlist_for_each_entry(frag, node, &zd->fraglist, fnode)
 363                                 if (frag->seq == (seq&IEEE80211_SCTL_SEQ))
 364                                         break;
 365                         if (!frag)
 366                                 goto resubmit;
 367                         skb = frag->skb;
 368                         ptr = skb_put(skb, len);
 369                         if (ptr)
 370                                 memcpy(ptr, data+8, len);
 371                         if (fc & IEEE80211_FCTL_MOREFRAGS)
 372                                 goto resubmit;
 373                         hlist_del_init(&frag->fnode);
 374                         kfree(frag);
 375                 } else {
 376                         if (datalen<14)
 377                                 goto resubmit;
 378                         skb = dev_alloc_skb(len + 14 + 2);
 379                         if (!skb)
 380                                 goto resubmit;
 381                         skb_reserve(skb, 2);
 382                         memcpy(skb_put(skb, 12), &data[datalen-14], 12);
 383                         memcpy(skb_put(skb, 2), &data[6], 2);
 384                         memcpy(skb_put(skb, len), data+8, len);
 385                 }
 386                 skb->protocol = eth_type_trans(skb, zd->dev);
 387                 zd->dev->stats.rx_packets++;
 388                 zd->dev->stats.rx_bytes += skb->len;
 389                 netif_rx(skb);
 390         }
 391 resubmit:
 392         memset(data, 0, ZD1201_RXSIZE);
 393
 394         urb->status = 0;
 395         urb->dev = zd->usb;
 396         if(usb_submit_urb(urb, GFP_ATOMIC))
 397                 free = 1;
 398
 399 exit:
 400         if (free) {
 401                 zd->rxlen = 0;
 402                 zd->rxdatas = 1;
 403                 wake_up(&zd->rxdataq);
 404                 kfree(urb->transfer_buffer);
 405         }
 406         return;
 407 }
 408
 409 static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
 410         unsigned int riddatalen)
 411 {
 412         int err;
 413         int i = 0;
 414         int code;
 415         int rid_fid;
 416         int length;
 417         unsigned char *pdata;
 418
 419         zd->rxdatas = 0;
 420         err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
 421         if (err)
 422                 return err;
 423
 424         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 425         if (!zd->rxlen)
 426                 return -EIO;
 427
 428         code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
 429         rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
 430         length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
 431         if (length > zd->rxlen)
 432                 length = zd->rxlen-6;
 433
 434         /* If access bit is not on, then error */
 435         if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
 436                 return -EINVAL;
 437
 438         /* Not enough buffer for allocating data */
 439         if (riddatalen != (length - 4)) {
 440                 dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
 441                     riddatalen, zd->rxlen, length, rid, rid_fid);
 442                 return -ENODATA;
 443         }
 444
 445         zd->rxdatas = 0;
 446         /* Issue SetRxRid commnd */
 447         err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
 448         if (err)
 449                 return err;
 450
 451         /* Receive RID record from resource packets */
 452         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 453         if (!zd->rxlen)
 454                 return -EIO;
 455
 456         if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
 457                 dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
 458                     zd->rxdata[zd->rxlen-1]);
 459                 return -EINVAL;
 460         }
 461
 462         /* Set the data pointer and received data length */
 463         pdata = zd->rxdata;
 464         length = zd->rxlen;
 465
 466         do {
 467                 int actual_length;
 468
 469                 actual_length = (length > 64) ? 64 : length;
 470
 471                 if (pdata[0] != 0x3) {
 472                         dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
 473                             pdata[0]);
 474                         return -EINVAL;
 475                 }
 476
 477                 if (actual_length != 64) {
 478                         /* Trim the last packet type byte */
 479                         actual_length--;
 480                 }
 481
 482                 /* Skip the 4 bytes header (RID length and RID) */
 483                 if (i == 0) {
 484                         pdata += 8;
 485                         actual_length -= 8;
 486                 } else {
 487                         pdata += 4;
 488                         actual_length -= 4;
 489                 }
 490
 491                 memcpy(riddata, pdata, actual_length);
 492                 riddata += actual_length;
 493                 pdata += actual_length;
 494                 length -= 64;
 495                 i++;
 496         } while (length > 0);
 497
 498         return 0;
 499 }
 500
 501 /*
 502  *      resreq:
 503  *              byte    type
 504  *              byte    sequence
 505  *              u16     reserved
 506  *              byte    data[12]
 507  *      total: 16
 508  */
 509 static int zd1201_setconfig(struct zd1201 *zd, int rid, void *buf, int len, int wait)
 510 {
 511         int err;
 512         unsigned char *request;
 513         int reqlen;
 514         char seq=0;
 515         struct urb *urb;
 516         gfp_t gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
 517
 518         len += 4;                       /* first 4 are for header */
 519
 520         zd->rxdatas = 0;
 521         zd->rxlen = 0;
 522         for (seq=0; len > 0; seq++) {
 523                 request = kmalloc(16, gfp_mask);
 524                 if (!request)
 525                         return -ENOMEM;
 526                 urb = usb_alloc_urb(0, gfp_mask);
 527                 if (!urb) {
 528                         kfree(request);
 529                         return -ENOMEM;
 530                 }
 531                 memset(request, 0, 16);
 532                 reqlen = len>12 ? 12 : len;
 533                 request[0] = ZD1201_USB_RESREQ;
 534                 request[1] = seq;
 535                 request[2] = 0;
 536                 request[3] = 0;
 537                 if (request[1] == 0) {
 538                         /* add header */
 539                         *(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
 540                         *(__le16*)&request[6] = cpu_to_le16(rid);
 541                         memcpy(request+8, buf, reqlen-4);
 542                         buf += reqlen-4;
 543                 } else {
 544                         memcpy(request+4, buf, reqlen);
 545                         buf += reqlen;
 546                 }
 547
 548                 len -= reqlen;
 549
 550                 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
 551                     zd->endp_out2), request, 16, zd1201_usbfree, zd);
 552                 err = usb_submit_urb(urb, gfp_mask);
 553                 if (err)
 554                         goto err;
 555         }
 556
 557         request = kmalloc(16, gfp_mask);
 558         if (!request)
 559                 return -ENOMEM;
 560         urb = usb_alloc_urb(0, gfp_mask);
 561         if (!urb) {
 562                 kfree(request);
 563                 return -ENOMEM;
 564         }
 565         *((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
 566         *((__le16*)&request[4]) =
 567             cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
 568         *((__le16*)&request[6]) = cpu_to_le16(rid);
 569         *((__le16*)&request[8]) = cpu_to_le16(0);
 570         *((__le16*)&request[10]) = cpu_to_le16(0);
 571         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 572              request, 16, zd1201_usbfree, zd);
 573         err = usb_submit_urb(urb, gfp_mask);
 574         if (err)
 575                 goto err;
 576
 577         if (wait) {
 578                 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 579                 if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
 580                         dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
 581                 }
 582         }
 583
 584         return 0;
 585 err:
 586         kfree(request);
 587         usb_free_urb(urb);
 588         return err;
 589 }
 590
 591 static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
 592 {
 593         int err;
 594         __le16 zdval;
 595
 596         err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
 597         if (err)
 598                 return err;
 599         *val = le16_to_cpu(zdval);
 600         return 0;
 601 }
 602
 603 static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
 604 {
 605         __le16 zdval = cpu_to_le16(val);
 606         return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
 607 }
 608
 609 static int zd1201_drvr_start(struct zd1201 *zd)
 610 {
 611         int err, i;
 612         short max;
 613         __le16 zdmax;
 614         unsigned char *buffer;
 615
 616         buffer = kzalloc(ZD1201_RXSIZE, GFP_KERNEL);
 617         if (!buffer)
 618                 return -ENOMEM;
 619
 620         usb_fill_bulk_urb(zd->rx_urb, zd->usb,
 621             usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
 622             zd1201_usbrx, zd);
 623
 624         err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
 625         if (err)
 626                 goto err_buffer;
 627
 628         err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
 629         if (err)
 630                 goto err_urb;
 631
 632         err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
 633             sizeof(__le16));
 634         if (err)
 635                 goto err_urb;
 636
 637         max = le16_to_cpu(zdmax);
 638         for (i=0; i<max; i++) {
 639                 err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
 640                 if (err)
 641                         goto err_urb;
 642         }
 643
 644         return 0;
 645
 646 err_urb:
 647         usb_kill_urb(zd->rx_urb);
 648         return err;
 649 err_buffer:
 650         kfree(buffer);
 651         return err;
 652 }
 653
 654 /*      Magic alert: The firmware doesn't seem to like the MAC state being
 655  *      toggled in promisc (aka monitor) mode.
 656  *      (It works a number of times, but will halt eventually)
 657  *      So we turn it of before disabling and on after enabling if needed.
 658  */
 659 static int zd1201_enable(struct zd1201 *zd)
 660 {
 661         int err;
 662
 663         if (zd->mac_enabled)
 664                 return 0;
 665
 666         err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
 667         if (!err)
 668                 zd->mac_enabled = 1;
 669
 670         if (zd->monitor)
 671                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
 672
 673         return err;
 674 }
 675
 676 static int zd1201_disable(struct zd1201 *zd)
 677 {
 678         int err;
 679
 680         if (!zd->mac_enabled)
 681                 return 0;
 682         if (zd->monitor) {
 683                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 684                 if (err)
 685                         return err;
 686         }
 687
 688         err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
 689         if (!err)
 690                 zd->mac_enabled = 0;
 691         return err;
 692 }
 693
 694 static int zd1201_mac_reset(struct zd1201 *zd)
 695 {
 696         if (!zd->mac_enabled)
 697                 return 0;
 698         zd1201_disable(zd);
 699         return zd1201_enable(zd);
 700 }
 701
 702 static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
 703 {
 704         int err, val;
 705         char buf[IW_ESSID_MAX_SIZE+2];
 706
 707         err = zd1201_disable(zd);
 708         if (err)
 709                 return err;
 710
 711         val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
 712         val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
 713         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
 714         if (err)
 715                 return err;
 716
 717         *(__le16 *)buf = cpu_to_le16(essidlen);
 718         memcpy(buf+2, essid, essidlen);
 719         if (!zd->ap) {  /* Normal station */
 720                 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
 721                     IW_ESSID_MAX_SIZE+2, 1);
 722                 if (err)
 723                         return err;
 724         } else {        /* AP */
 725                 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
 726                     IW_ESSID_MAX_SIZE+2, 1);
 727                 if (err)
 728                         return err;
 729         }
 730
 731         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 732             zd->dev->dev_addr, zd->dev->addr_len, 1);
 733         if (err)
 734                 return err;
 735
 736         err = zd1201_enable(zd);
 737         if (err)
 738                 return err;
 739
 740         msleep(100);
 741         return 0;
 742 }
 743
 744 static int zd1201_net_open(struct net_device *dev)
 745 {
 746         struct zd1201 *zd = netdev_priv(dev);
 747
 748         /* Start MAC with wildcard if no essid set */
 749         if (!zd->mac_enabled)
 750                 zd1201_join(zd, zd->essid, zd->essidlen);
 751         netif_start_queue(dev);
 752
 753         return 0;
 754 }
 755
 756 static int zd1201_net_stop(struct net_device *dev)
 757 {
 758         netif_stop_queue(dev);
 759         return 0;
 760 }
 761
 762 /*
 763         RFC 1042 encapsulates Ethernet frames in 802.11 frames
 764         by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
 765         (0x00, 0x00, 0x00). Zd requires an additional padding, copy
 766         of ethernet addresses, length of the standard RFC 1042 packet
 767         and a command byte (which is nul for tx).
 768
 769         tx frame (from Wlan NG):
 770         RFC 1042:
 771                 llc             0xAA 0xAA 0x03 (802.2 LLC)
 772                 snap            0x00 0x00 0x00 (Ethernet encapsulated)
 773                 type            2 bytes, Ethernet type field
 774                 payload         (minus eth header)
 775         Zydas specific:
 776                 padding         1B if (skb->len+8+1)%64==0
 777                 Eth MAC addr    12 bytes, Ethernet MAC addresses
 778                 length          2 bytes, RFC 1042 packet length
 779                                 (llc+snap+type+payload)
 780                 zd              1 null byte, zd1201 packet type
 781  */
 782 static int zd1201_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 783 {
 784         struct zd1201 *zd = netdev_priv(dev);
 785         unsigned char *txbuf = zd->txdata;
 786         int txbuflen, pad = 0, err;
 787         struct urb *urb = zd->tx_urb;
 788
 789         if (!zd->mac_enabled || zd->monitor) {
 790                 dev->stats.tx_dropped++;
 791                 kfree_skb(skb);
 792                 return 0;
 793         }
 794         netif_stop_queue(dev);
 795
 796         txbuflen = skb->len + 8 + 1;
 797         if (txbuflen%64 == 0) {
 798                 pad = 1;
 799                 txbuflen++;
 800         }
 801         txbuf[0] = 0xAA;
 802         txbuf[1] = 0xAA;
 803         txbuf[2] = 0x03;
 804         txbuf[3] = 0x00;        /* rfc1042 */
 805         txbuf[4] = 0x00;
 806         txbuf[5] = 0x00;
 807
 808         skb_copy_from_linear_data_offset(skb, 12, txbuf + 6, skb->len - 12);
 809         if (pad)
 810                 txbuf[skb->len-12+6]=0;
 811         skb_copy_from_linear_data(skb, txbuf + skb->len - 12 + 6 + pad, 12);
 812         *(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
 813         txbuf[txbuflen-1] = 0;
 814
 815         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
 816             txbuf, txbuflen, zd1201_usbtx, zd);
 817
 818         err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
 819         if (err) {
 820                 dev->stats.tx_errors++;
 821                 netif_start_queue(dev);
 822                 return err;
 823         }
 824         dev->stats.tx_packets++;
 825         dev->stats.tx_bytes += skb->len;
 826         dev->trans_start = jiffies;
 827         kfree_skb(skb);
 828
 829         return 0;
 830 }
 831
 832 static void zd1201_tx_timeout(struct net_device *dev)
 833 {
 834         struct zd1201 *zd = netdev_priv(dev);
 835
 836         if (!zd)
 837                 return;
 838         dev_warn(&zd->usb->dev, "%s: TX timeout, shooting down urb\n",
 839             dev->name);
 840         usb_unlink_urb(zd->tx_urb);
 841         dev->stats.tx_errors++;
 842         /* Restart the timeout to quiet the watchdog: */
 843         dev->trans_start = jiffies;
 844 }
 845
 846 static int zd1201_set_mac_address(struct net_device *dev, void *p)
 847 {
 848         struct sockaddr *addr = p;
 849         struct zd1201 *zd = netdev_priv(dev);
 850         int err;
 851
 852         if (!zd)
 853                 return -ENODEV;
 854
 855         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 856             addr->sa_data, dev->addr_len, 1);
 857         if (err)
 858                 return err;
 859         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
 860
 861         return zd1201_mac_reset(zd);
 862 }
 863
 864 static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
 865 {
 866         struct zd1201 *zd = netdev_priv(dev);
 867
 868         return &zd->iwstats;
 869 }
 870
 871 static void zd1201_set_multicast(struct net_device *dev)
 872 {
 873         struct zd1201 *zd = netdev_priv(dev);
 874         struct dev_mc_list *mc = dev->mc_list;
 875         unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
 876         int i;
 877
 878         if (dev->mc_count > ZD1201_MAXMULTI)
 879                 return;
 880
 881         for (i=0; i<dev->mc_count; i++) {
 882                 memcpy(reqbuf+i*ETH_ALEN, mc->dmi_addr, ETH_ALEN);
 883                 mc = mc->next;
 884         }
 885         zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
 886             dev->mc_count*ETH_ALEN, 0);
 887
 888 }
 889
 890 static int zd1201_config_commit(struct net_device *dev,
 891     struct iw_request_info *info, struct iw_point *data, char *essid)
 892 {
 893         struct zd1201 *zd = netdev_priv(dev);
 894
 895         return zd1201_mac_reset(zd);
 896 }
 897
 898 static int zd1201_get_name(struct net_device *dev,
 899     struct iw_request_info *info, char *name, char *extra)
 900 {
 901         strcpy(name, "IEEE 802.11b");
 902         return 0;
 903 }
 904
 905 static int zd1201_set_freq(struct net_device *dev,
 906     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 907 {
 908         struct zd1201 *zd = netdev_priv(dev);
 909         short channel = 0;
 910         int err;
 911
 912         if (freq->e == 0)
 913                 channel = freq->m;
 914         else {
 915                 channel = ieee80211_freq_to_dsss_chan(freq->m);
 916                 if (channel < 0)
 917                         channel = 0;
 918         }
 919
 920         err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
 921         if (err)
 922                 return err;
 923
 924         zd1201_mac_reset(zd);
 925
 926         return 0;
 927 }
 928
 929 static int zd1201_get_freq(struct net_device *dev,
 930     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 931 {
 932         struct zd1201 *zd = netdev_priv(dev);
 933         short channel;
 934         int err;
 935
 936         err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
 937         if (err)
 938                 return err;
 939         freq->e = 0;
 940         freq->m = channel;
 941
 942         return 0;
 943 }
 944
 945 static int zd1201_set_mode(struct net_device *dev,
 946     struct iw_request_info *info, __u32 *mode, char *extra)
 947 {
 948         struct zd1201 *zd = netdev_priv(dev);
 949         short porttype, monitor = 0;
 950         unsigned char buffer[IW_ESSID_MAX_SIZE+2];
 951         int err;
 952
 953         if (zd->ap) {
 954                 if (*mode != IW_MODE_MASTER)
 955                         return -EINVAL;
 956                 return 0;
 957         }
 958
 959         err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 960         if (err)
 961                 return err;
 962         zd->dev->type = ARPHRD_ETHER;
 963         switch(*mode) {
 964                 case IW_MODE_MONITOR:
 965                         monitor = 1;
 966                         zd->dev->type = ARPHRD_IEEE80211;
 967                         /* Make sure we are no longer associated with by
 968                            setting an 'impossible' essid.
 969                            (otherwise we mess up firmware)
 970                          */
 971                         zd1201_join(zd, "\0-*#\0", 5);
 972                         /* Put port in pIBSS */
 973                 case 8: /* No pseudo-IBSS in wireless extensions (yet) */
 974                         porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
 975                         break;
 976                 case IW_MODE_ADHOC:
 977                         porttype = ZD1201_PORTTYPE_IBSS;
 978                         break;
 979                 case IW_MODE_INFRA:
 980                         porttype = ZD1201_PORTTYPE_BSS;
 981                         break;
 982                 default:
 983                         return -EINVAL;
 984         }
 985
 986         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
 987         if (err)
 988                 return err;
 989         if (zd->monitor && !monitor) {
 990                         zd1201_disable(zd);
 991                         *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
 992                         memcpy(buffer+2, zd->essid, zd->essidlen);
 993                         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
 994                             buffer, IW_ESSID_MAX_SIZE+2, 1);
 995                         if (err)
 996                                 return err;
 997         }
 998         zd->monitor = monitor;
 999         /* If monitor mode is set we don't actually turn it on here since it
1000          * is done during mac reset anyway (see zd1201_mac_enable).
1001          */
1002         zd1201_mac_reset(zd);
1003
1004         return 0;
1005 }
1006
1007 static int zd1201_get_mode(struct net_device *dev,
1008     struct iw_request_info *info, __u32 *mode, char *extra)
1009 {
1010         struct zd1201 *zd = netdev_priv(dev);
1011         short porttype;
1012         int err;
1013
1014         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1015         if (err)
1016                 return err;
1017         switch(porttype) {
1018                 case ZD1201_PORTTYPE_IBSS:
1019                         *mode = IW_MODE_ADHOC;
1020                         break;
1021                 case ZD1201_PORTTYPE_BSS:
1022                         *mode = IW_MODE_INFRA;
1023                         break;
1024                 case ZD1201_PORTTYPE_WDS:
1025                         *mode = IW_MODE_REPEAT;
1026                         break;
1027                 case ZD1201_PORTTYPE_PSEUDOIBSS:
1028                         *mode = 8;/* No Pseudo-IBSS... */
1029                         break;
1030                 case ZD1201_PORTTYPE_AP:
1031                         *mode = IW_MODE_MASTER;
1032                         break;
1033                 default:
1034                         dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1035                             porttype);
1036                         *mode = IW_MODE_AUTO;
1037         }
1038         if (zd->monitor)
1039                 *mode = IW_MODE_MONITOR;
1040
1041         return 0;
1042 }
1043
1044 static int zd1201_get_range(struct net_device *dev,
1045     struct iw_request_info *info, struct iw_point *wrq, char *extra)
1046 {
1047         struct iw_range *range = (struct iw_range *)extra;
1048
1049         wrq->length = sizeof(struct iw_range);
1050         memset(range, 0, sizeof(struct iw_range));
1051         range->we_version_compiled = WIRELESS_EXT;
1052         range->we_version_source = WIRELESS_EXT;
1053
1054         range->max_qual.qual = 128;
1055         range->max_qual.level = 128;
1056         range->max_qual.noise = 128;
1057         range->max_qual.updated = 7;
1058
1059         range->encoding_size[0] = 5;
1060         range->encoding_size[1] = 13;
1061         range->num_encoding_sizes = 2;
1062         range->max_encoding_tokens = ZD1201_NUMKEYS;
1063
1064         range->num_bitrates = 4;
1065         range->bitrate[0] = 1000000;
1066         range->bitrate[1] = 2000000;
1067         range->bitrate[2] = 5500000;
1068         range->bitrate[3] = 11000000;
1069
1070         range->min_rts = 0;
1071         range->min_frag = ZD1201_FRAGMIN;
1072         range->max_rts = ZD1201_RTSMAX;
1073         range->min_frag = ZD1201_FRAGMAX;
1074
1075         return 0;
1076 }
1077
1078 /*      Little bit of magic here: we only get the quality if we poll
1079  *      for it, and we never get an actual request to trigger such
1080  *      a poll. Therefore we 'assume' that the user will soon ask for
1081  *      the stats after asking the bssid.
1082  */
1083 static int zd1201_get_wap(struct net_device *dev,
1084     struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1085 {
1086         struct zd1201 *zd = netdev_priv(dev);
1087         unsigned char buffer[6];
1088
1089         if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1090                 /* Unfortunately the quality and noise reported is useless.
1091                    they seem to be accumulators that increase until you
1092                    read them, unless we poll on a fixed interval we can't
1093                    use them
1094                  */
1095                 /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1096                 zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1097                 /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1098                 zd->iwstats.qual.updated = 2;
1099         }
1100
1101         return zd1201_getconfig(zd, ZD1201_RID_CURRENTBSSID, ap_addr->sa_data, 6);
1102 }
1103
1104 static int zd1201_set_scan(struct net_device *dev,
1105     struct iw_request_info *info, struct iw_point *srq, char *extra)
1106 {
1107         /* We do everything in get_scan */
1108         return 0;
1109 }
1110
1111 static int zd1201_get_scan(struct net_device *dev,
1112     struct iw_request_info *info, struct iw_point *srq, char *extra)
1113 {
1114         struct zd1201 *zd = netdev_priv(dev);
1115         int err, i, j, enabled_save;
1116         struct iw_event iwe;
1117         char *cev = extra;
1118         char *end_buf = extra + IW_SCAN_MAX_DATA;
1119
1120         /* No scanning in AP mode */
1121         if (zd->ap)
1122                 return -EOPNOTSUPP;
1123
1124         /* Scan doesn't seem to work if disabled */
1125         enabled_save = zd->mac_enabled;
1126         zd1201_enable(zd);
1127
1128         zd->rxdatas = 0;
1129         err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE,
1130              ZD1201_INQ_SCANRESULTS, 0, 0);
1131         if (err)
1132                 return err;
1133
1134         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1135         if (!zd->rxlen)
1136                 return -EIO;
1137
1138         if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1139                 return -EIO;
1140
1141         for(i=8; i<zd->rxlen; i+=62) {
1142                 iwe.cmd = SIOCGIWAP;
1143                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1144                 memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1145                 cev = iwe_stream_add_event(info, cev, end_buf,
1146                                            &iwe, IW_EV_ADDR_LEN);
1147
1148                 iwe.cmd = SIOCGIWESSID;
1149                 iwe.u.data.length = zd->rxdata[i+16];
1150                 iwe.u.data.flags = 1;
1151                 cev = iwe_stream_add_point(info, cev, end_buf,
1152                                            &iwe, zd->rxdata+i+18);
1153
1154                 iwe.cmd = SIOCGIWMODE;
1155                 if (zd->rxdata[i+14]&0x01)
1156                         iwe.u.mode = IW_MODE_MASTER;
1157                 else
1158                         iwe.u.mode = IW_MODE_ADHOC;
1159                 cev = iwe_stream_add_event(info, cev, end_buf,
1160                                            &iwe, IW_EV_UINT_LEN);
1161
1162                 iwe.cmd = SIOCGIWFREQ;
1163                 iwe.u.freq.m = zd->rxdata[i+0];
1164                 iwe.u.freq.e = 0;
1165                 cev = iwe_stream_add_event(info, cev, end_buf,
1166                                            &iwe, IW_EV_FREQ_LEN);
1167
1168                 iwe.cmd = SIOCGIWRATE;
1169                 iwe.u.bitrate.fixed = 0;
1170                 iwe.u.bitrate.disabled = 0;
1171                 for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
1172                         iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
1173                         cev = iwe_stream_add_event(info, cev, end_buf,
1174                                                    &iwe, IW_EV_PARAM_LEN);
1175                 }
1176
1177                 iwe.cmd = SIOCGIWENCODE;
1178                 iwe.u.data.length = 0;
1179                 if (zd->rxdata[i+14]&0x10)
1180                         iwe.u.data.flags = IW_ENCODE_ENABLED;
1181                 else
1182                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1183                 cev = iwe_stream_add_point(info, cev, end_buf, &iwe, NULL);
1184
1185                 iwe.cmd = IWEVQUAL;
1186                 iwe.u.qual.qual = zd->rxdata[i+4];
1187                 iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
1188                 iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
1189                 iwe.u.qual.updated = 7;
1190                 cev = iwe_stream_add_event(info, cev, end_buf,
1191                                            &iwe, IW_EV_QUAL_LEN);
1192         }
1193
1194         if (!enabled_save)
1195                 zd1201_disable(zd);
1196
1197         srq->length = cev - extra;
1198         srq->flags = 0;
1199
1200         return 0;
1201 }
1202
1203 static int zd1201_set_essid(struct net_device *dev,
1204     struct iw_request_info *info, struct iw_point *data, char *essid)
1205 {
1206         struct zd1201 *zd = netdev_priv(dev);
1207
1208         if (data->length > IW_ESSID_MAX_SIZE)
1209                 return -EINVAL;
1210         if (data->length < 1)
1211                 data->length = 1;
1212         zd->essidlen = data->length;
1213         memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1214         memcpy(zd->essid, essid, data->length);
1215         return zd1201_join(zd, zd->essid, zd->essidlen);
1216 }
1217
1218 static int zd1201_get_essid(struct net_device *dev,
1219     struct iw_request_info *info, struct iw_point *data, char *essid)
1220 {
1221         struct zd1201 *zd = netdev_priv(dev);
1222
1223         memcpy(essid, zd->essid, zd->essidlen);
1224         data->flags = 1;
1225         data->length = zd->essidlen;
1226
1227         return 0;
1228 }
1229
1230 static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1231     struct iw_point *data, char *nick)
1232 {
1233         strcpy(nick, "zd1201");
1234         data->flags = 1;
1235         data->length = strlen(nick);
1236         return 0;
1237 }
1238
1239 static int zd1201_set_rate(struct net_device *dev,
1240     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1241 {
1242         struct zd1201 *zd = netdev_priv(dev);
1243         short rate;
1244         int err;
1245
1246         switch (rrq->value) {
1247                 case 1000000:
1248                         rate = ZD1201_RATEB1;
1249                         break;
1250                 case 2000000:
1251                         rate = ZD1201_RATEB2;
1252                         break;
1253                 case 5500000:
1254                         rate = ZD1201_RATEB5;
1255                         break;
1256                 case 11000000:
1257                 default:
1258                         rate = ZD1201_RATEB11;
1259                         break;
1260         }
1261         if (!rrq->fixed) { /* Also enable all lower bitrates */
1262                 rate |= rate-1;
1263         }
1264
1265         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1266         if (err)
1267                 return err;
1268
1269         return zd1201_mac_reset(zd);
1270 }
1271
1272 static int zd1201_get_rate(struct net_device *dev,
1273     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1274 {
1275         struct zd1201 *zd = netdev_priv(dev);
1276         short rate;
1277         int err;
1278
1279         err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1280         if (err)
1281                 return err;
1282
1283         switch(rate) {
1284                 case 1:
1285                         rrq->value = 1000000;
1286                         break;
1287                 case 2:
1288                         rrq->value = 2000000;
1289                         break;
1290                 case 5:
1291                         rrq->value = 5500000;
1292                         break;
1293                 case 11:
1294                         rrq->value = 11000000;
1295                         break;
1296                 default:
1297                         rrq->value = 0;
1298         }
1299         rrq->fixed = 0;
1300         rrq->disabled = 0;
1301
1302         return 0;
1303 }
1304
1305 static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1306     struct iw_param *rts, char *extra)
1307 {
1308         struct zd1201 *zd = netdev_priv(dev);
1309         int err;
1310         short val = rts->value;
1311
1312         if (rts->disabled || !rts->fixed)
1313                 val = ZD1201_RTSMAX;
1314         if (val > ZD1201_RTSMAX)
1315                 return -EINVAL;
1316         if (val < 0)
1317                 return -EINVAL;
1318
1319         err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1320         if (err)
1321                 return err;
1322         return zd1201_mac_reset(zd);
1323 }
1324
1325 static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1326     struct iw_param *rts, char *extra)
1327 {
1328         struct zd1201 *zd = netdev_priv(dev);
1329         short rtst;
1330         int err;
1331
1332         err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1333         if (err)
1334                 return err;
1335         rts->value = rtst;
1336         rts->disabled = (rts->value == ZD1201_RTSMAX);
1337         rts->fixed = 1;
1338
1339         return 0;
1340 }
1341
1342 static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1343     struct iw_param *frag, char *extra)
1344 {
1345         struct zd1201 *zd = netdev_priv(dev);
1346         int err;
1347         short val = frag->value;
1348
1349         if (frag->disabled || !frag->fixed)
1350                 val = ZD1201_FRAGMAX;
1351         if (val > ZD1201_FRAGMAX)
1352                 return -EINVAL;
1353         if (val < ZD1201_FRAGMIN)
1354                 return -EINVAL;
1355         if (val & 1)
1356                 return -EINVAL;
1357         err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1358         if (err)
1359                 return err;
1360         return zd1201_mac_reset(zd);
1361 }
1362
1363 static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1364     struct iw_param *frag, char *extra)
1365 {
1366         struct zd1201 *zd = netdev_priv(dev);
1367         short fragt;
1368         int err;
1369
1370         err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1371         if (err)
1372                 return err;
1373         frag->value = fragt;
1374         frag->disabled = (frag->value == ZD1201_FRAGMAX);
1375         frag->fixed = 1;
1376
1377         return 0;
1378 }
1379
1380 static int zd1201_set_retry(struct net_device *dev,
1381     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1382 {
1383         return 0;
1384 }
1385
1386 static int zd1201_get_retry(struct net_device *dev,
1387     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1388 {
1389         return 0;
1390 }
1391
1392 static int zd1201_set_encode(struct net_device *dev,
1393     struct iw_request_info *info, struct iw_point *erq, char *key)
1394 {
1395         struct zd1201 *zd = netdev_priv(dev);
1396         short i;
1397         int err, rid;
1398
1399         if (erq->length > ZD1201_MAXKEYLEN)
1400                 return -EINVAL;
1401
1402         i = (erq->flags & IW_ENCODE_INDEX)-1;
1403         if (i == -1) {
1404                 err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1405                 if (err)
1406                         return err;
1407         } else {
1408                 err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1409                 if (err)
1410                         return err;
1411         }
1412
1413         if (i < 0 || i >= ZD1201_NUMKEYS)
1414                 return -EINVAL;
1415
1416         rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1417         err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1418         if (err)
1419                 return err;
1420         zd->encode_keylen[i] = erq->length;
1421         memcpy(zd->encode_keys[i], key, erq->length);
1422
1423         i=0;
1424         if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1425                 i |= 0x01;
1426                 zd->encode_enabled = 1;
1427         } else
1428                 zd->encode_enabled = 0;
1429         if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1430                 i |= 0x02;
1431                 zd->encode_restricted = 1;
1432         } else
1433                 zd->encode_restricted = 0;
1434         err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1435         if (err)
1436                 return err;
1437
1438         if (zd->encode_enabled)
1439                 i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1440         else
1441                 i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1442         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1443         if (err)
1444                 return err;
1445
1446         return zd1201_mac_reset(zd);
1447 }
1448
1449 static int zd1201_get_encode(struct net_device *dev,
1450     struct iw_request_info *info, struct iw_point *erq, char *key)
1451 {
1452         struct zd1201 *zd = netdev_priv(dev);
1453         short i;
1454         int err;
1455
1456         if (zd->encode_enabled)
1457                 erq->flags = IW_ENCODE_ENABLED;
1458         else
1459                 erq->flags = IW_ENCODE_DISABLED;
1460         if (zd->encode_restricted)
1461                 erq->flags |= IW_ENCODE_RESTRICTED;
1462         else
1463                 erq->flags |= IW_ENCODE_OPEN;
1464
1465         i = (erq->flags & IW_ENCODE_INDEX) -1;
1466         if (i == -1) {
1467                 err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1468                 if (err)
1469                         return err;
1470         }
1471         if (i<0 || i>= ZD1201_NUMKEYS)
1472                 return -EINVAL;
1473
1474         erq->flags |= i+1;
1475
1476         erq->length = zd->encode_keylen[i];
1477         memcpy(key, zd->encode_keys[i], erq->length);
1478
1479         return 0;
1480 }
1481
1482 static int zd1201_set_power(struct net_device *dev,
1483     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1484 {
1485         struct zd1201 *zd = netdev_priv(dev);
1486         short enabled, duration, level;
1487         int err;
1488
1489         enabled = vwrq->disabled ? 0 : 1;
1490         if (enabled) {
1491                 if (vwrq->flags & IW_POWER_PERIOD) {
1492                         duration = vwrq->value;
1493                         err = zd1201_setconfig16(zd,
1494                             ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1495                         if (err)
1496                                 return err;
1497                         goto out;
1498                 }
1499                 if (vwrq->flags & IW_POWER_TIMEOUT) {
1500                         err = zd1201_getconfig16(zd,
1501                             ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1502                         if (err)
1503                                 return err;
1504                         level = vwrq->value * 4 / duration;
1505                         if (level > 4)
1506                                 level = 4;
1507                         if (level < 0)
1508                                 level = 0;
1509                         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1510                             level);
1511                         if (err)
1512                                 return err;
1513                         goto out;
1514                 }
1515                 return -EINVAL;
1516         }
1517 out:
1518         return zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1519 }
1520
1521 static int zd1201_get_power(struct net_device *dev,
1522     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1523 {
1524         struct zd1201 *zd = netdev_priv(dev);
1525         short enabled, level, duration;
1526         int err;
1527
1528         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1529         if (err)
1530                 return err;
1531         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1532         if (err)
1533                 return err;
1534         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1535         if (err)
1536                 return err;
1537         vwrq->disabled = enabled ? 0 : 1;
1538         if (vwrq->flags & IW_POWER_TYPE) {
1539                 if (vwrq->flags & IW_POWER_PERIOD) {
1540                         vwrq->value = duration;
1541                         vwrq->flags = IW_POWER_PERIOD;
1542                 } else {
1543                         vwrq->value = duration * level / 4;
1544                         vwrq->flags = IW_POWER_TIMEOUT;
1545                 }
1546         }
1547         if (vwrq->flags & IW_POWER_MODE) {
1548                 if (enabled && level)
1549                         vwrq->flags = IW_POWER_UNICAST_R;
1550                 else
1551                         vwrq->flags = IW_POWER_ALL_R;
1552         }
1553
1554         return 0;
1555 }
1556
1557
1558 static const iw_handler zd1201_iw_handler[] =
1559 {
1560         (iw_handler) zd1201_config_commit,      /* SIOCSIWCOMMIT */
1561         (iw_handler) zd1201_get_name,           /* SIOCGIWNAME */
1562         (iw_handler) NULL,                      /* SIOCSIWNWID */
1563         (iw_handler) NULL,                      /* SIOCGIWNWID */
1564         (iw_handler) zd1201_set_freq,           /* SIOCSIWFREQ */
1565         (iw_handler) zd1201_get_freq,           /* SIOCGIWFREQ */
1566         (iw_handler) zd1201_set_mode,           /* SIOCSIWMODE */
1567         (iw_handler) zd1201_get_mode,           /* SIOCGIWMODE */
1568         (iw_handler) NULL,                      /* SIOCSIWSENS */
1569         (iw_handler) NULL,                      /* SIOCGIWSENS */
1570         (iw_handler) NULL,                      /* SIOCSIWRANGE */
1571         (iw_handler) zd1201_get_range,           /* SIOCGIWRANGE */
1572         (iw_handler) NULL,                      /* SIOCSIWPRIV */
1573         (iw_handler) NULL,                      /* SIOCGIWPRIV */
1574         (iw_handler) NULL,                      /* SIOCSIWSTATS */
1575         (iw_handler) NULL,                      /* SIOCGIWSTATS */
1576         (iw_handler) NULL,                      /* SIOCSIWSPY */
1577         (iw_handler) NULL,                      /* SIOCGIWSPY */
1578         (iw_handler) NULL,                      /* -- hole -- */
1579         (iw_handler) NULL,                      /* -- hole -- */
1580         (iw_handler) NULL/*zd1201_set_wap*/,            /* SIOCSIWAP */
1581         (iw_handler) zd1201_get_wap,            /* SIOCGIWAP */
1582         (iw_handler) NULL,                      /* -- hole -- */
1583         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
1584         (iw_handler) zd1201_set_scan,           /* SIOCSIWSCAN */
1585         (iw_handler) zd1201_get_scan,           /* SIOCGIWSCAN */
1586         (iw_handler) zd1201_set_essid,          /* SIOCSIWESSID */
1587         (iw_handler) zd1201_get_essid,          /* SIOCGIWESSID */
1588         (iw_handler) NULL,                      /* SIOCSIWNICKN */
1589         (iw_handler) zd1201_get_nick,           /* SIOCGIWNICKN */
1590         (iw_handler) NULL,                      /* -- hole -- */
1591         (iw_handler) NULL,                      /* -- hole -- */
1592         (iw_handler) zd1201_set_rate,           /* SIOCSIWRATE */
1593         (iw_handler) zd1201_get_rate,           /* SIOCGIWRATE */
1594         (iw_handler) zd1201_set_rts,            /* SIOCSIWRTS */
1595         (iw_handler) zd1201_get_rts,            /* SIOCGIWRTS */
1596         (iw_handler) zd1201_set_frag,           /* SIOCSIWFRAG */
1597         (iw_handler) zd1201_get_frag,           /* SIOCGIWFRAG */
1598         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
1599         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
1600         (iw_handler) zd1201_set_retry,          /* SIOCSIWRETRY */
1601         (iw_handler) zd1201_get_retry,          /* SIOCGIWRETRY */
1602         (iw_handler) zd1201_set_encode,         /* SIOCSIWENCODE */
1603         (iw_handler) zd1201_get_encode,         /* SIOCGIWENCODE */
1604         (iw_handler) zd1201_set_power,          /* SIOCSIWPOWER */
1605         (iw_handler) zd1201_get_power,          /* SIOCGIWPOWER */
1606 };
1607
1608 static int zd1201_set_hostauth(struct net_device *dev,
1609     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1610 {
1611         struct zd1201 *zd = netdev_priv(dev);
1612
1613         if (!zd->ap)
1614                 return -EOPNOTSUPP;
1615
1616         return zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1617 }
1618
1619 static int zd1201_get_hostauth(struct net_device *dev,
1620     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1621 {
1622         struct zd1201 *zd = netdev_priv(dev);
1623         short hostauth;
1624         int err;
1625
1626         if (!zd->ap)
1627                 return -EOPNOTSUPP;
1628
1629         err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1630         if (err)
1631                 return err;
1632         rrq->value = hostauth;
1633         rrq->fixed = 1;
1634
1635         return 0;
1636 }
1637
1638 static int zd1201_auth_sta(struct net_device *dev,
1639     struct iw_request_info *info, struct sockaddr *sta, char *extra)
1640 {
1641         struct zd1201 *zd = netdev_priv(dev);
1642         unsigned char buffer[10];
1643
1644         if (!zd->ap)
1645                 return -EOPNOTSUPP;
1646
1647         memcpy(buffer, sta->sa_data, ETH_ALEN);
1648         *(short*)(buffer+6) = 0;        /* 0==success, 1==failure */
1649         *(short*)(buffer+8) = 0;
1650
1651         return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1652 }
1653
1654 static int zd1201_set_maxassoc(struct net_device *dev,
1655     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1656 {
1657         struct zd1201 *zd = netdev_priv(dev);
1658         int err;
1659
1660         if (!zd->ap)
1661                 return -EOPNOTSUPP;
1662
1663         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1664         if (err)
1665                 return err;
1666         return 0;
1667 }
1668
1669 static int zd1201_get_maxassoc(struct net_device *dev,
1670     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1671 {
1672         struct zd1201 *zd = netdev_priv(dev);
1673         short maxassoc;
1674         int err;
1675
1676         if (!zd->ap)
1677                 return -EOPNOTSUPP;
1678
1679         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1680         if (err)
1681                 return err;
1682         rrq->value = maxassoc;
1683         rrq->fixed = 1;
1684
1685         return 0;
1686 }
1687
1688 static const iw_handler zd1201_private_handler[] = {
1689         (iw_handler) zd1201_set_hostauth,       /* ZD1201SIWHOSTAUTH */
1690         (iw_handler) zd1201_get_hostauth,       /* ZD1201GIWHOSTAUTH */
1691         (iw_handler) zd1201_auth_sta,           /* ZD1201SIWAUTHSTA */
1692         (iw_handler) NULL,                      /* nothing to get */
1693         (iw_handler) zd1201_set_maxassoc,       /* ZD1201SIMAXASSOC */
1694         (iw_handler) zd1201_get_maxassoc,       /* ZD1201GIMAXASSOC */
1695 };
1696
1697 static const struct iw_priv_args zd1201_private_args[] = {
1698         { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1699             IW_PRIV_TYPE_NONE, "sethostauth" },
1700         { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1701             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1702         { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1703             IW_PRIV_TYPE_NONE, "authstation" },
1704         { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1705             IW_PRIV_TYPE_NONE, "setmaxassoc" },
1706         { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1707             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1708 };
1709
1710 static const struct iw_handler_def zd1201_iw_handlers = {
1711         .num_standard           = ARRAY_SIZE(zd1201_iw_handler),
1712         .num_private            = ARRAY_SIZE(zd1201_private_handler),
1713         .num_private_args       = ARRAY_SIZE(zd1201_private_args),
1714         .standard               = (iw_handler *)zd1201_iw_handler,
1715         .private                = (iw_handler *)zd1201_private_handler,
1716         .private_args           = (struct iw_priv_args *) zd1201_private_args,
1717         .get_wireless_stats     = zd1201_get_wireless_stats,
1718 };
1719
1720 static const struct net_device_ops zd1201_netdev_ops = {
1721         .ndo_open               = zd1201_net_open,
1722         .ndo_stop               = zd1201_net_stop,
1723         .ndo_start_xmit         = zd1201_hard_start_xmit,
1724         .ndo_tx_timeout         = zd1201_tx_timeout,
1725         .ndo_set_multicast_list = zd1201_set_multicast,
1726         .ndo_set_mac_address    = zd1201_set_mac_address,
1727         .ndo_change_mtu         = eth_change_mtu,
1728         .ndo_validate_addr      = eth_validate_addr,
1729 };
1730
1731 static int zd1201_probe(struct usb_interface *interface,
1732                         const struct usb_device_id *id)
1733 {
1734         struct zd1201 *zd;
1735         struct net_device *dev;
1736         struct usb_device *usb;
1737         int err;
1738         short porttype;
1739         char buf[IW_ESSID_MAX_SIZE+2];
1740
1741         usb = interface_to_usbdev(interface);
1742
1743         dev = alloc_etherdev(sizeof(*zd));
1744         if (!dev)
1745                 return -ENOMEM;
1746         zd = netdev_priv(dev);
1747         zd->dev = dev;
1748
1749         zd->ap = ap;
1750         zd->usb = usb;
1751         zd->removed = 0;
1752         init_waitqueue_head(&zd->rxdataq);
1753         INIT_HLIST_HEAD(&zd->fraglist);
1754
1755         err = zd1201_fw_upload(usb, zd->ap);
1756         if (err) {
1757                 dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
1758                 goto err_zd;
1759         }
1760
1761         zd->endp_in = 1;
1762         zd->endp_out = 1;
1763         zd->endp_out2 = 2;
1764         zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1765         zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1766         if (!zd->rx_urb || !zd->tx_urb)
1767                 goto err_zd;
1768
1769         mdelay(100);
1770         err = zd1201_drvr_start(zd);
1771         if (err)
1772                 goto err_zd;
1773
1774         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
1775         if (err)
1776                 goto err_start;
1777
1778         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
1779             ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
1780         if (err)
1781                 goto err_start;
1782
1783         dev->netdev_ops = &zd1201_netdev_ops;
1784         dev->wireless_handlers = &zd1201_iw_handlers;
1785         dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
1786         strcpy(dev->name, "wlan%d");
1787
1788         err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR,
1789             dev->dev_addr, dev->addr_len);
1790         if (err)
1791                 goto err_start;
1792
1793         /* Set wildcard essid to match zd->essid */
1794         *(__le16 *)buf = cpu_to_le16(0);
1795         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
1796             IW_ESSID_MAX_SIZE+2, 1);
1797         if (err)
1798                 goto err_start;
1799
1800         if (zd->ap)
1801                 porttype = ZD1201_PORTTYPE_AP;
1802         else
1803                 porttype = ZD1201_PORTTYPE_BSS;
1804         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1805         if (err)
1806                 goto err_start;
1807
1808         SET_NETDEV_DEV(dev, &usb->dev);
1809
1810         err = register_netdev(dev);
1811         if (err)
1812                 goto err_start;
1813         dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
1814             dev->name);
1815
1816         usb_set_intfdata(interface, zd);
1817         zd1201_enable(zd);      /* zd1201 likes to startup enabled, */
1818         zd1201_disable(zd);     /* interfering with all the wifis in range */
1819         return 0;
1820
1821 err_start:
1822         /* Leave the device in reset state */
1823         zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
1824 err_zd:
1825         usb_free_urb(zd->tx_urb);
1826         usb_free_urb(zd->rx_urb);
1827         free_netdev(dev);
1828         return err;
1829 }
1830
1831 static void zd1201_disconnect(struct usb_interface *interface)
1832 {
1833         struct zd1201 *zd=(struct zd1201 *)usb_get_intfdata(interface);
1834         struct hlist_node *node, *node2;
1835         struct zd1201_frag *frag;
1836
1837         if (!zd)
1838                 return;
1839         usb_set_intfdata(interface, NULL);
1840
1841         hlist_for_each_entry_safe(frag, node, node2, &zd->fraglist, fnode) {
1842                 hlist_del_init(&frag->fnode);
1843                 kfree_skb(frag->skb);
1844                 kfree(frag);
1845         }
1846
1847         if (zd->tx_urb) {
1848                 usb_kill_urb(zd->tx_urb);
1849                 usb_free_urb(zd->tx_urb);
1850         }
1851         if (zd->rx_urb) {
1852                 usb_kill_urb(zd->rx_urb);
1853                 usb_free_urb(zd->rx_urb);
1854         }
1855
1856         if (zd->dev) {
1857                 unregister_netdev(zd->dev);
1858                 free_netdev(zd->dev);
1859         }
1860 }
1861
1862 #ifdef CONFIG_PM
1863
1864 static int zd1201_suspend(struct usb_interface *interface,
1865                            pm_message_t message)
1866 {
1867         struct zd1201 *zd = usb_get_intfdata(interface);
1868
1869         netif_device_detach(zd->dev);
1870
1871         zd->was_enabled = zd->mac_enabled;
1872
1873         if (zd->was_enabled)
1874                 return zd1201_disable(zd);
1875         else
1876                 return 0;
1877 }
1878
1879 static int zd1201_resume(struct usb_interface *interface)
1880 {
1881         struct zd1201 *zd = usb_get_intfdata(interface);
1882
1883         if (!zd || !zd->dev)
1884                 return -ENODEV;
1885
1886         netif_device_attach(zd->dev);
1887
1888         if (zd->was_enabled)
1889                 return zd1201_enable(zd);
1890         else
1891                 return 0;
1892 }
1893
1894 #else
1895
1896 #define zd1201_suspend NULL
1897 #define zd1201_resume  NULL
1898
1899 #endif
1900
1901 static struct usb_driver zd1201_usb = {
1902         .name = "zd1201",
1903         .probe = zd1201_probe,
1904         .disconnect = zd1201_disconnect,
1905         .id_table = zd1201_table,
1906         .suspend = zd1201_suspend,
1907         .resume = zd1201_resume,
1908 };
1909
1910 static int __init zd1201_init(void)
1911 {
1912         return usb_register(&zd1201_usb);
1913 }
1914
1915 static void __exit zd1201_cleanup(void)
1916 {
1917         usb_deregister(&zd1201_usb);
1918 }
1919
1920 module_init(zd1201_init);
1921 module_exit(zd1201_cleanup);