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 MODULE_FIRMWARE("zd1201-ap.fw");
 116 MODULE_FIRMWARE("zd1201.fw");
 117
 118 static void zd1201_usbfree(struct urb *urb)
 119 {
 120         struct zd1201 *zd = urb->context;
 121
 122         switch(urb->status) {
 123                 case -EILSEQ:
 124                 case -ENODEV:
 125                 case -ETIME:
 126                 case -ENOENT:
 127                 case -EPIPE:
 128                 case -EOVERFLOW:
 129                 case -ESHUTDOWN:
 130                         dev_warn(&zd->usb->dev, "%s: urb failed: %d\n",
 131                             zd->dev->name, urb->status);
 132         }
 133
 134         kfree(urb->transfer_buffer);
 135         usb_free_urb(urb);
 136         return;
 137 }
 138
 139 /* cmdreq message:
 140         u32 type
 141         u16 cmd
 142         u16 parm0
 143         u16 parm1
 144         u16 parm2
 145         u8  pad[4]
 146
 147         total: 4 + 2 + 2 + 2 + 2 + 4 = 16
 148 */
 149 static int zd1201_docmd(struct zd1201 *zd, int cmd, int parm0,
 150                         int parm1, int parm2)
 151 {
 152         unsigned char *command;
 153         int ret;
 154         struct urb *urb;
 155
 156         command = kmalloc(16, GFP_ATOMIC);
 157         if (!command)
 158                 return -ENOMEM;
 159
 160         *((__le32*)command) = cpu_to_le32(ZD1201_USB_CMDREQ);
 161         *((__le16*)&command[4]) = cpu_to_le16(cmd);
 162         *((__le16*)&command[6]) = cpu_to_le16(parm0);
 163         *((__le16*)&command[8]) = cpu_to_le16(parm1);
 164         *((__le16*)&command[10])= cpu_to_le16(parm2);
 165
 166         urb = usb_alloc_urb(0, GFP_ATOMIC);
 167         if (!urb) {
 168                 kfree(command);
 169                 return -ENOMEM;
 170         }
 171         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 172                           command, 16, zd1201_usbfree, zd);
 173         ret = usb_submit_urb(urb, GFP_ATOMIC);
 174         if (ret) {
 175                 kfree(command);
 176                 usb_free_urb(urb);
 177         }
 178
 179         return ret;
 180 }
 181
 182 /* Callback after sending out a packet */
 183 static void zd1201_usbtx(struct urb *urb)
 184 {
 185         struct zd1201 *zd = urb->context;
 186         netif_wake_queue(zd->dev);
 187         return;
 188 }
 189
 190 /* Incoming data */
 191 static void zd1201_usbrx(struct urb *urb)
 192 {
 193         struct zd1201 *zd = urb->context;
 194         int free = 0;
 195         unsigned char *data = urb->transfer_buffer;
 196         struct sk_buff *skb;
 197         unsigned char type;
 198
 199         if (!zd)
 200                 return;
 201
 202         switch(urb->status) {
 203                 case -EILSEQ:
 204                 case -ENODEV:
 205                 case -ETIME:
 206                 case -ENOENT:
 207                 case -EPIPE:
 208                 case -EOVERFLOW:
 209                 case -ESHUTDOWN:
 210                         dev_warn(&zd->usb->dev, "%s: rx urb failed: %d\n",
 211                             zd->dev->name, urb->status);
 212                         free = 1;
 213                         goto exit;
 214         }
 215
 216         if (urb->status != 0 || urb->actual_length == 0)
 217                 goto resubmit;
 218
 219         type = data[0];
 220         if (type == ZD1201_PACKET_EVENTSTAT || type == ZD1201_PACKET_RESOURCE) {
 221                 memcpy(zd->rxdata, data, urb->actual_length);
 222                 zd->rxlen = urb->actual_length;
 223                 zd->rxdatas = 1;
 224                 wake_up(&zd->rxdataq);
 225         }
 226         /* Info frame */
 227         if (type == ZD1201_PACKET_INQUIRE) {
 228                 int i = 0;
 229                 unsigned short infotype, framelen, copylen;
 230                 framelen = le16_to_cpu(*(__le16*)&data[4]);
 231                 infotype = le16_to_cpu(*(__le16*)&data[6]);
 232
 233                 if (infotype == ZD1201_INF_LINKSTATUS) {
 234                         short linkstatus;
 235
 236                         linkstatus = le16_to_cpu(*(__le16*)&data[8]);
 237                         switch(linkstatus) {
 238                                 case 1:
 239                                         netif_carrier_on(zd->dev);
 240                                         break;
 241                                 case 2:
 242                                         netif_carrier_off(zd->dev);
 243                                         break;
 244                                 case 3:
 245                                         netif_carrier_off(zd->dev);
 246                                         break;
 247                                 case 4:
 248                                         netif_carrier_on(zd->dev);
 249                                         break;
 250                                 default:
 251                                         netif_carrier_off(zd->dev);
 252                         }
 253                         goto resubmit;
 254                 }
 255                 if (infotype == ZD1201_INF_ASSOCSTATUS) {
 256                         short status = le16_to_cpu(*(__le16*)(data+8));
 257                         int event;
 258                         union iwreq_data wrqu;
 259
 260                         switch (status) {
 261                                 case ZD1201_ASSOCSTATUS_STAASSOC:
 262                                 case ZD1201_ASSOCSTATUS_REASSOC:
 263                                         event = IWEVREGISTERED;
 264                                         break;
 265                                 case ZD1201_ASSOCSTATUS_DISASSOC:
 266                                 case ZD1201_ASSOCSTATUS_ASSOCFAIL:
 267                                 case ZD1201_ASSOCSTATUS_AUTHFAIL:
 268                                 default:
 269                                         event = IWEVEXPIRED;
 270                         }
 271                         memcpy(wrqu.addr.sa_data, data+10, ETH_ALEN);
 272                         wrqu.addr.sa_family = ARPHRD_ETHER;
 273
 274                         /* Send event to user space */
 275                         wireless_send_event(zd->dev, event, &wrqu, NULL);
 276
 277                         goto resubmit;
 278                 }
 279                 if (infotype == ZD1201_INF_AUTHREQ) {
 280                         union iwreq_data wrqu;
 281
 282                         memcpy(wrqu.addr.sa_data, data+8, ETH_ALEN);
 283                         wrqu.addr.sa_family = ARPHRD_ETHER;
 284                         /* There isn't a event that trully fits this request.
 285                            We assume that userspace will be smart enough to
 286                            see a new station being expired and sends back a
 287                            authstation ioctl to authorize it. */
 288                         wireless_send_event(zd->dev, IWEVEXPIRED, &wrqu, NULL);
 289                         goto resubmit;
 290                 }
 291                 /* Other infotypes are handled outside this handler */
 292                 zd->rxlen = 0;
 293                 while (i < urb->actual_length) {
 294                         copylen = le16_to_cpu(*(__le16*)&data[i+2]);
 295                         /* Sanity check, sometimes we get junk */
 296                         if (copylen+zd->rxlen > sizeof(zd->rxdata))
 297                                 break;
 298                         memcpy(zd->rxdata+zd->rxlen, data+i+4, copylen);
 299                         zd->rxlen += copylen;
 300                         i += 64;
 301                 }
 302                 if (i >= urb->actual_length) {
 303                         zd->rxdatas = 1;
 304                         wake_up(&zd->rxdataq);
 305                 }
 306                 goto  resubmit;
 307         }
 308         /* Actual data */
 309         if (data[urb->actual_length-1] == ZD1201_PACKET_RXDATA) {
 310                 int datalen = urb->actual_length-1;
 311                 unsigned short len, fc, seq;
 312                 struct hlist_node *node;
 313
 314                 len = ntohs(*(__be16 *)&data[datalen-2]);
 315                 if (len>datalen)
 316                         len=datalen;
 317                 fc = le16_to_cpu(*(__le16 *)&data[datalen-16]);
 318                 seq = le16_to_cpu(*(__le16 *)&data[datalen-24]);
 319
 320                 if (zd->monitor) {
 321                         if (datalen < 24)
 322                                 goto resubmit;
 323                         if (!(skb = dev_alloc_skb(datalen+24)))
 324                                 goto resubmit;
 325
 326                         memcpy(skb_put(skb, 2), &data[datalen-16], 2);
 327                         memcpy(skb_put(skb, 2), &data[datalen-2], 2);
 328                         memcpy(skb_put(skb, 6), &data[datalen-14], 6);
 329                         memcpy(skb_put(skb, 6), &data[datalen-22], 6);
 330                         memcpy(skb_put(skb, 6), &data[datalen-8], 6);
 331                         memcpy(skb_put(skb, 2), &data[datalen-24], 2);
 332                         memcpy(skb_put(skb, len), data, len);
 333                         skb->protocol = eth_type_trans(skb, zd->dev);
 334                         zd->dev->stats.rx_packets++;
 335                         zd->dev->stats.rx_bytes += skb->len;
 336                         netif_rx(skb);
 337                         goto resubmit;
 338                 }
 339
 340                 if ((seq & IEEE80211_SCTL_FRAG) ||
 341                     (fc & IEEE80211_FCTL_MOREFRAGS)) {
 342                         struct zd1201_frag *frag = NULL;
 343                         char *ptr;
 344
 345                         if (datalen<14)
 346                                 goto resubmit;
 347                         if ((seq & IEEE80211_SCTL_FRAG) == 0) {
 348                                 frag = kmalloc(sizeof(*frag), GFP_ATOMIC);
 349                                 if (!frag)
 350                                         goto resubmit;
 351                                 skb = dev_alloc_skb(IEEE80211_MAX_DATA_LEN +14+2);
 352                                 if (!skb) {
 353                                         kfree(frag);
 354                                         goto resubmit;
 355                                 }
 356                                 frag->skb = skb;
 357                                 frag->seq = seq & IEEE80211_SCTL_SEQ;
 358                                 skb_reserve(skb, 2);
 359                                 memcpy(skb_put(skb, 12), &data[datalen-14], 12);
 360                                 memcpy(skb_put(skb, 2), &data[6], 2);
 361                                 memcpy(skb_put(skb, len), data+8, len);
 362                                 hlist_add_head(&frag->fnode, &zd->fraglist);
 363                                 goto resubmit;
 364                         }
 365                         hlist_for_each_entry(frag, node, &zd->fraglist, fnode)
 366                                 if (frag->seq == (seq&IEEE80211_SCTL_SEQ))
 367                                         break;
 368                         if (!frag)
 369                                 goto resubmit;
 370                         skb = frag->skb;
 371                         ptr = skb_put(skb, len);
 372                         if (ptr)
 373                                 memcpy(ptr, data+8, len);
 374                         if (fc & IEEE80211_FCTL_MOREFRAGS)
 375                                 goto resubmit;
 376                         hlist_del_init(&frag->fnode);
 377                         kfree(frag);
 378                 } else {
 379                         if (datalen<14)
 380                                 goto resubmit;
 381                         skb = dev_alloc_skb(len + 14 + 2);
 382                         if (!skb)
 383                                 goto resubmit;
 384                         skb_reserve(skb, 2);
 385                         memcpy(skb_put(skb, 12), &data[datalen-14], 12);
 386                         memcpy(skb_put(skb, 2), &data[6], 2);
 387                         memcpy(skb_put(skb, len), data+8, len);
 388                 }
 389                 skb->protocol = eth_type_trans(skb, zd->dev);
 390                 zd->dev->stats.rx_packets++;
 391                 zd->dev->stats.rx_bytes += skb->len;
 392                 netif_rx(skb);
 393         }
 394 resubmit:
 395         memset(data, 0, ZD1201_RXSIZE);
 396
 397         urb->status = 0;
 398         urb->dev = zd->usb;
 399         if(usb_submit_urb(urb, GFP_ATOMIC))
 400                 free = 1;
 401
 402 exit:
 403         if (free) {
 404                 zd->rxlen = 0;
 405                 zd->rxdatas = 1;
 406                 wake_up(&zd->rxdataq);
 407                 kfree(urb->transfer_buffer);
 408         }
 409         return;
 410 }
 411
 412 static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
 413         unsigned int riddatalen)
 414 {
 415         int err;
 416         int i = 0;
 417         int code;
 418         int rid_fid;
 419         int length;
 420         unsigned char *pdata;
 421
 422         zd->rxdatas = 0;
 423         err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
 424         if (err)
 425                 return err;
 426
 427         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 428         if (!zd->rxlen)
 429                 return -EIO;
 430
 431         code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
 432         rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
 433         length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
 434         if (length > zd->rxlen)
 435                 length = zd->rxlen-6;
 436
 437         /* If access bit is not on, then error */
 438         if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
 439                 return -EINVAL;
 440
 441         /* Not enough buffer for allocating data */
 442         if (riddatalen != (length - 4)) {
 443                 dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
 444                     riddatalen, zd->rxlen, length, rid, rid_fid);
 445                 return -ENODATA;
 446         }
 447
 448         zd->rxdatas = 0;
 449         /* Issue SetRxRid commnd */
 450         err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
 451         if (err)
 452                 return err;
 453
 454         /* Receive RID record from resource packets */
 455         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 456         if (!zd->rxlen)
 457                 return -EIO;
 458
 459         if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
 460                 dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
 461                     zd->rxdata[zd->rxlen-1]);
 462                 return -EINVAL;
 463         }
 464
 465         /* Set the data pointer and received data length */
 466         pdata = zd->rxdata;
 467         length = zd->rxlen;
 468
 469         do {
 470                 int actual_length;
 471
 472                 actual_length = (length > 64) ? 64 : length;
 473
 474                 if (pdata[0] != 0x3) {
 475                         dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
 476                             pdata[0]);
 477                         return -EINVAL;
 478                 }
 479
 480                 if (actual_length != 64) {
 481                         /* Trim the last packet type byte */
 482                         actual_length--;
 483                 }
 484
 485                 /* Skip the 4 bytes header (RID length and RID) */
 486                 if (i == 0) {
 487                         pdata += 8;
 488                         actual_length -= 8;
 489                 } else {
 490                         pdata += 4;
 491                         actual_length -= 4;
 492                 }
 493
 494                 memcpy(riddata, pdata, actual_length);
 495                 riddata += actual_length;
 496                 pdata += actual_length;
 497                 length -= 64;
 498                 i++;
 499         } while (length > 0);
 500
 501         return 0;
 502 }
 503
 504 /*
 505  *      resreq:
 506  *              byte    type
 507  *              byte    sequence
 508  *              u16     reserved
 509  *              byte    data[12]
 510  *      total: 16
 511  */
 512 static int zd1201_setconfig(struct zd1201 *zd, int rid, void *buf, int len, int wait)
 513 {
 514         int err;
 515         unsigned char *request;
 516         int reqlen;
 517         char seq=0;
 518         struct urb *urb;
 519         gfp_t gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
 520
 521         len += 4;                       /* first 4 are for header */
 522
 523         zd->rxdatas = 0;
 524         zd->rxlen = 0;
 525         for (seq=0; len > 0; seq++) {
 526                 request = kmalloc(16, gfp_mask);
 527                 if (!request)
 528                         return -ENOMEM;
 529                 urb = usb_alloc_urb(0, gfp_mask);
 530                 if (!urb) {
 531                         kfree(request);
 532                         return -ENOMEM;
 533                 }
 534                 memset(request, 0, 16);
 535                 reqlen = len>12 ? 12 : len;
 536                 request[0] = ZD1201_USB_RESREQ;
 537                 request[1] = seq;
 538                 request[2] = 0;
 539                 request[3] = 0;
 540                 if (request[1] == 0) {
 541                         /* add header */
 542                         *(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
 543                         *(__le16*)&request[6] = cpu_to_le16(rid);
 544                         memcpy(request+8, buf, reqlen-4);
 545                         buf += reqlen-4;
 546                 } else {
 547                         memcpy(request+4, buf, reqlen);
 548                         buf += reqlen;
 549                 }
 550
 551                 len -= reqlen;
 552
 553                 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
 554                     zd->endp_out2), request, 16, zd1201_usbfree, zd);
 555                 err = usb_submit_urb(urb, gfp_mask);
 556                 if (err)
 557                         goto err;
 558         }
 559
 560         request = kmalloc(16, gfp_mask);
 561         if (!request)
 562                 return -ENOMEM;
 563         urb = usb_alloc_urb(0, gfp_mask);
 564         if (!urb) {
 565                 kfree(request);
 566                 return -ENOMEM;
 567         }
 568         *((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
 569         *((__le16*)&request[4]) =
 570             cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
 571         *((__le16*)&request[6]) = cpu_to_le16(rid);
 572         *((__le16*)&request[8]) = cpu_to_le16(0);
 573         *((__le16*)&request[10]) = cpu_to_le16(0);
 574         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 575              request, 16, zd1201_usbfree, zd);
 576         err = usb_submit_urb(urb, gfp_mask);
 577         if (err)
 578                 goto err;
 579
 580         if (wait) {
 581                 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 582                 if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
 583                         dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
 584                 }
 585         }
 586
 587         return 0;
 588 err:
 589         kfree(request);
 590         usb_free_urb(urb);
 591         return err;
 592 }
 593
 594 static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
 595 {
 596         int err;
 597         __le16 zdval;
 598
 599         err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
 600         if (err)
 601                 return err;
 602         *val = le16_to_cpu(zdval);
 603         return 0;
 604 }
 605
 606 static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
 607 {
 608         __le16 zdval = cpu_to_le16(val);
 609         return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
 610 }
 611
 612 static int zd1201_drvr_start(struct zd1201 *zd)
 613 {
 614         int err, i;
 615         short max;
 616         __le16 zdmax;
 617         unsigned char *buffer;
 618
 619         buffer = kzalloc(ZD1201_RXSIZE, GFP_KERNEL);
 620         if (!buffer)
 621                 return -ENOMEM;
 622
 623         usb_fill_bulk_urb(zd->rx_urb, zd->usb,
 624             usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
 625             zd1201_usbrx, zd);
 626
 627         err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
 628         if (err)
 629                 goto err_buffer;
 630
 631         err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
 632         if (err)
 633                 goto err_urb;
 634
 635         err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
 636             sizeof(__le16));
 637         if (err)
 638                 goto err_urb;
 639
 640         max = le16_to_cpu(zdmax);
 641         for (i=0; i<max; i++) {
 642                 err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
 643                 if (err)
 644                         goto err_urb;
 645         }
 646
 647         return 0;
 648
 649 err_urb:
 650         usb_kill_urb(zd->rx_urb);
 651         return err;
 652 err_buffer:
 653         kfree(buffer);
 654         return err;
 655 }
 656
 657 /*      Magic alert: The firmware doesn't seem to like the MAC state being
 658  *      toggled in promisc (aka monitor) mode.
 659  *      (It works a number of times, but will halt eventually)
 660  *      So we turn it of before disabling and on after enabling if needed.
 661  */
 662 static int zd1201_enable(struct zd1201 *zd)
 663 {
 664         int err;
 665
 666         if (zd->mac_enabled)
 667                 return 0;
 668
 669         err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
 670         if (!err)
 671                 zd->mac_enabled = 1;
 672
 673         if (zd->monitor)
 674                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
 675
 676         return err;
 677 }
 678
 679 static int zd1201_disable(struct zd1201 *zd)
 680 {
 681         int err;
 682
 683         if (!zd->mac_enabled)
 684                 return 0;
 685         if (zd->monitor) {
 686                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 687                 if (err)
 688                         return err;
 689         }
 690
 691         err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
 692         if (!err)
 693                 zd->mac_enabled = 0;
 694         return err;
 695 }
 696
 697 static int zd1201_mac_reset(struct zd1201 *zd)
 698 {
 699         if (!zd->mac_enabled)
 700                 return 0;
 701         zd1201_disable(zd);
 702         return zd1201_enable(zd);
 703 }
 704
 705 static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
 706 {
 707         int err, val;
 708         char buf[IW_ESSID_MAX_SIZE+2];
 709
 710         err = zd1201_disable(zd);
 711         if (err)
 712                 return err;
 713
 714         val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
 715         val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
 716         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
 717         if (err)
 718                 return err;
 719
 720         *(__le16 *)buf = cpu_to_le16(essidlen);
 721         memcpy(buf+2, essid, essidlen);
 722         if (!zd->ap) {  /* Normal station */
 723                 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
 724                     IW_ESSID_MAX_SIZE+2, 1);
 725                 if (err)
 726                         return err;
 727         } else {        /* AP */
 728                 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
 729                     IW_ESSID_MAX_SIZE+2, 1);
 730                 if (err)
 731                         return err;
 732         }
 733
 734         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 735             zd->dev->dev_addr, zd->dev->addr_len, 1);
 736         if (err)
 737                 return err;
 738
 739         err = zd1201_enable(zd);
 740         if (err)
 741                 return err;
 742
 743         msleep(100);
 744         return 0;
 745 }
 746
 747 static int zd1201_net_open(struct net_device *dev)
 748 {
 749         struct zd1201 *zd = netdev_priv(dev);
 750
 751         /* Start MAC with wildcard if no essid set */
 752         if (!zd->mac_enabled)
 753                 zd1201_join(zd, zd->essid, zd->essidlen);
 754         netif_start_queue(dev);
 755
 756         return 0;
 757 }
 758
 759 static int zd1201_net_stop(struct net_device *dev)
 760 {
 761         netif_stop_queue(dev);
 762         return 0;
 763 }
 764
 765 /*
 766         RFC 1042 encapsulates Ethernet frames in 802.11 frames
 767         by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
 768         (0x00, 0x00, 0x00). Zd requires an additional padding, copy
 769         of ethernet addresses, length of the standard RFC 1042 packet
 770         and a command byte (which is nul for tx).
 771
 772         tx frame (from Wlan NG):
 773         RFC 1042:
 774                 llc             0xAA 0xAA 0x03 (802.2 LLC)
 775                 snap            0x00 0x00 0x00 (Ethernet encapsulated)
 776                 type            2 bytes, Ethernet type field
 777                 payload         (minus eth header)
 778         Zydas specific:
 779                 padding         1B if (skb->len+8+1)%64==0
 780                 Eth MAC addr    12 bytes, Ethernet MAC addresses
 781                 length          2 bytes, RFC 1042 packet length
 782                                 (llc+snap+type+payload)
 783                 zd              1 null byte, zd1201 packet type
 784  */
 785 static netdev_tx_t zd1201_hard_start_xmit(struct sk_buff *skb,
 786                                                 struct net_device *dev)
 787 {
 788         struct zd1201 *zd = netdev_priv(dev);
 789         unsigned char *txbuf = zd->txdata;
 790         int txbuflen, pad = 0, err;
 791         struct urb *urb = zd->tx_urb;
 792
 793         if (!zd->mac_enabled || zd->monitor) {
 794                 dev->stats.tx_dropped++;
 795                 kfree_skb(skb);
 796                 return NETDEV_TX_OK;
 797         }
 798         netif_stop_queue(dev);
 799
 800         txbuflen = skb->len + 8 + 1;
 801         if (txbuflen%64 == 0) {
 802                 pad = 1;
 803                 txbuflen++;
 804         }
 805         txbuf[0] = 0xAA;
 806         txbuf[1] = 0xAA;
 807         txbuf[2] = 0x03;
 808         txbuf[3] = 0x00;        /* rfc1042 */
 809         txbuf[4] = 0x00;
 810         txbuf[5] = 0x00;
 811
 812         skb_copy_from_linear_data_offset(skb, 12, txbuf + 6, skb->len - 12);
 813         if (pad)
 814                 txbuf[skb->len-12+6]=0;
 815         skb_copy_from_linear_data(skb, txbuf + skb->len - 12 + 6 + pad, 12);
 816         *(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
 817         txbuf[txbuflen-1] = 0;
 818
 819         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
 820             txbuf, txbuflen, zd1201_usbtx, zd);
 821
 822         err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
 823         if (err) {
 824                 dev->stats.tx_errors++;
 825                 netif_start_queue(dev);
 826         } else {
 827                 dev->stats.tx_packets++;
 828                 dev->stats.tx_bytes += skb->len;
 829                 dev->trans_start = jiffies;
 830         }
 831         kfree_skb(skb);
 832
 833         return NETDEV_TX_OK;
 834 }
 835
 836 static void zd1201_tx_timeout(struct net_device *dev)
 837 {
 838         struct zd1201 *zd = netdev_priv(dev);
 839
 840         if (!zd)
 841                 return;
 842         dev_warn(&zd->usb->dev, "%s: TX timeout, shooting down urb\n",
 843             dev->name);
 844         usb_unlink_urb(zd->tx_urb);
 845         dev->stats.tx_errors++;
 846         /* Restart the timeout to quiet the watchdog: */
 847         dev->trans_start = jiffies;
 848 }
 849
 850 static int zd1201_set_mac_address(struct net_device *dev, void *p)
 851 {
 852         struct sockaddr *addr = p;
 853         struct zd1201 *zd = netdev_priv(dev);
 854         int err;
 855
 856         if (!zd)
 857                 return -ENODEV;
 858
 859         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 860             addr->sa_data, dev->addr_len, 1);
 861         if (err)
 862                 return err;
 863         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
 864
 865         return zd1201_mac_reset(zd);
 866 }
 867
 868 static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
 869 {
 870         struct zd1201 *zd = netdev_priv(dev);
 871
 872         return &zd->iwstats;
 873 }
 874
 875 static void zd1201_set_multicast(struct net_device *dev)
 876 {
 877         struct zd1201 *zd = netdev_priv(dev);
 878         struct dev_mc_list *mc = dev->mc_list;
 879         unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
 880         int i;
 881
 882         if (dev->mc_count > ZD1201_MAXMULTI)
 883                 return;
 884
 885         for (i=0; i<dev->mc_count; i++) {
 886                 memcpy(reqbuf+i*ETH_ALEN, mc->dmi_addr, ETH_ALEN);
 887                 mc = mc->next;
 888         }
 889         zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
 890             dev->mc_count*ETH_ALEN, 0);
 891
 892 }
 893
 894 static int zd1201_config_commit(struct net_device *dev,
 895     struct iw_request_info *info, struct iw_point *data, char *essid)
 896 {
 897         struct zd1201 *zd = netdev_priv(dev);
 898
 899         return zd1201_mac_reset(zd);
 900 }
 901
 902 static int zd1201_get_name(struct net_device *dev,
 903     struct iw_request_info *info, char *name, char *extra)
 904 {
 905         strcpy(name, "IEEE 802.11b");
 906         return 0;
 907 }
 908
 909 static int zd1201_set_freq(struct net_device *dev,
 910     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 911 {
 912         struct zd1201 *zd = netdev_priv(dev);
 913         short channel = 0;
 914         int err;
 915
 916         if (freq->e == 0)
 917                 channel = freq->m;
 918         else {
 919                 channel = ieee80211_freq_to_dsss_chan(freq->m);
 920                 if (channel < 0)
 921                         channel = 0;
 922         }
 923
 924         err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
 925         if (err)
 926                 return err;
 927
 928         zd1201_mac_reset(zd);
 929
 930         return 0;
 931 }
 932
 933 static int zd1201_get_freq(struct net_device *dev,
 934     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 935 {
 936         struct zd1201 *zd = netdev_priv(dev);
 937         short channel;
 938         int err;
 939
 940         err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
 941         if (err)
 942                 return err;
 943         freq->e = 0;
 944         freq->m = channel;
 945
 946         return 0;
 947 }
 948
 949 static int zd1201_set_mode(struct net_device *dev,
 950     struct iw_request_info *info, __u32 *mode, char *extra)
 951 {
 952         struct zd1201 *zd = netdev_priv(dev);
 953         short porttype, monitor = 0;
 954         unsigned char buffer[IW_ESSID_MAX_SIZE+2];
 955         int err;
 956
 957         if (zd->ap) {
 958                 if (*mode != IW_MODE_MASTER)
 959                         return -EINVAL;
 960                 return 0;
 961         }
 962
 963         err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 964         if (err)
 965                 return err;
 966         zd->dev->type = ARPHRD_ETHER;
 967         switch(*mode) {
 968                 case IW_MODE_MONITOR:
 969                         monitor = 1;
 970                         zd->dev->type = ARPHRD_IEEE80211;
 971                         /* Make sure we are no longer associated with by
 972                            setting an 'impossible' essid.
 973                            (otherwise we mess up firmware)
 974                          */
 975                         zd1201_join(zd, "\0-*#\0", 5);
 976                         /* Put port in pIBSS */
 977                 case 8: /* No pseudo-IBSS in wireless extensions (yet) */
 978                         porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
 979                         break;
 980                 case IW_MODE_ADHOC:
 981                         porttype = ZD1201_PORTTYPE_IBSS;
 982                         break;
 983                 case IW_MODE_INFRA:
 984                         porttype = ZD1201_PORTTYPE_BSS;
 985                         break;
 986                 default:
 987                         return -EINVAL;
 988         }
 989
 990         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
 991         if (err)
 992                 return err;
 993         if (zd->monitor && !monitor) {
 994                         zd1201_disable(zd);
 995                         *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
 996                         memcpy(buffer+2, zd->essid, zd->essidlen);
 997                         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
 998                             buffer, IW_ESSID_MAX_SIZE+2, 1);
 999                         if (err)
1000                                 return err;
1001         }
1002         zd->monitor = monitor;
1003         /* If monitor mode is set we don't actually turn it on here since it
1004          * is done during mac reset anyway (see zd1201_mac_enable).
1005          */
1006         zd1201_mac_reset(zd);
1007
1008         return 0;
1009 }
1010
1011 static int zd1201_get_mode(struct net_device *dev,
1012     struct iw_request_info *info, __u32 *mode, char *extra)
1013 {
1014         struct zd1201 *zd = netdev_priv(dev);
1015         short porttype;
1016         int err;
1017
1018         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1019         if (err)
1020                 return err;
1021         switch(porttype) {
1022                 case ZD1201_PORTTYPE_IBSS:
1023                         *mode = IW_MODE_ADHOC;
1024                         break;
1025                 case ZD1201_PORTTYPE_BSS:
1026                         *mode = IW_MODE_INFRA;
1027                         break;
1028                 case ZD1201_PORTTYPE_WDS:
1029                         *mode = IW_MODE_REPEAT;
1030                         break;
1031                 case ZD1201_PORTTYPE_PSEUDOIBSS:
1032                         *mode = 8;/* No Pseudo-IBSS... */
1033                         break;
1034                 case ZD1201_PORTTYPE_AP:
1035                         *mode = IW_MODE_MASTER;
1036                         break;
1037                 default:
1038                         dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1039                             porttype);
1040                         *mode = IW_MODE_AUTO;
1041         }
1042         if (zd->monitor)
1043                 *mode = IW_MODE_MONITOR;
1044
1045         return 0;
1046 }
1047
1048 static int zd1201_get_range(struct net_device *dev,
1049     struct iw_request_info *info, struct iw_point *wrq, char *extra)
1050 {
1051         struct iw_range *range = (struct iw_range *)extra;
1052
1053         wrq->length = sizeof(struct iw_range);
1054         memset(range, 0, sizeof(struct iw_range));
1055         range->we_version_compiled = WIRELESS_EXT;
1056         range->we_version_source = WIRELESS_EXT;
1057
1058         range->max_qual.qual = 128;
1059         range->max_qual.level = 128;
1060         range->max_qual.noise = 128;
1061         range->max_qual.updated = 7;
1062
1063         range->encoding_size[0] = 5;
1064         range->encoding_size[1] = 13;
1065         range->num_encoding_sizes = 2;
1066         range->max_encoding_tokens = ZD1201_NUMKEYS;
1067
1068         range->num_bitrates = 4;
1069         range->bitrate[0] = 1000000;
1070         range->bitrate[1] = 2000000;
1071         range->bitrate[2] = 5500000;
1072         range->bitrate[3] = 11000000;
1073
1074         range->min_rts = 0;
1075         range->min_frag = ZD1201_FRAGMIN;
1076         range->max_rts = ZD1201_RTSMAX;
1077         range->min_frag = ZD1201_FRAGMAX;
1078
1079         return 0;
1080 }
1081
1082 /*      Little bit of magic here: we only get the quality if we poll
1083  *      for it, and we never get an actual request to trigger such
1084  *      a poll. Therefore we 'assume' that the user will soon ask for
1085  *      the stats after asking the bssid.
1086  */
1087 static int zd1201_get_wap(struct net_device *dev,
1088     struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1089 {
1090         struct zd1201 *zd = netdev_priv(dev);
1091         unsigned char buffer[6];
1092
1093         if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1094                 /* Unfortunately the quality and noise reported is useless.
1095                    they seem to be accumulators that increase until you
1096                    read them, unless we poll on a fixed interval we can't
1097                    use them
1098                  */
1099                 /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1100                 zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1101                 /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1102                 zd->iwstats.qual.updated = 2;
1103         }
1104
1105         return zd1201_getconfig(zd, ZD1201_RID_CURRENTBSSID, ap_addr->sa_data, 6);
1106 }
1107
1108 static int zd1201_set_scan(struct net_device *dev,
1109     struct iw_request_info *info, struct iw_point *srq, char *extra)
1110 {
1111         /* We do everything in get_scan */
1112         return 0;
1113 }
1114
1115 static int zd1201_get_scan(struct net_device *dev,
1116     struct iw_request_info *info, struct iw_point *srq, char *extra)
1117 {
1118         struct zd1201 *zd = netdev_priv(dev);
1119         int err, i, j, enabled_save;
1120         struct iw_event iwe;
1121         char *cev = extra;
1122         char *end_buf = extra + IW_SCAN_MAX_DATA;
1123
1124         /* No scanning in AP mode */
1125         if (zd->ap)
1126                 return -EOPNOTSUPP;
1127
1128         /* Scan doesn't seem to work if disabled */
1129         enabled_save = zd->mac_enabled;
1130         zd1201_enable(zd);
1131
1132         zd->rxdatas = 0;
1133         err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE,
1134              ZD1201_INQ_SCANRESULTS, 0, 0);
1135         if (err)
1136                 return err;
1137
1138         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1139         if (!zd->rxlen)
1140                 return -EIO;
1141
1142         if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1143                 return -EIO;
1144
1145         for(i=8; i<zd->rxlen; i+=62) {
1146                 iwe.cmd = SIOCGIWAP;
1147                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1148                 memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1149                 cev = iwe_stream_add_event(info, cev, end_buf,
1150                                            &iwe, IW_EV_ADDR_LEN);
1151
1152                 iwe.cmd = SIOCGIWESSID;
1153                 iwe.u.data.length = zd->rxdata[i+16];
1154                 iwe.u.data.flags = 1;
1155                 cev = iwe_stream_add_point(info, cev, end_buf,
1156                                            &iwe, zd->rxdata+i+18);
1157
1158                 iwe.cmd = SIOCGIWMODE;
1159                 if (zd->rxdata[i+14]&0x01)
1160                         iwe.u.mode = IW_MODE_MASTER;
1161                 else
1162                         iwe.u.mode = IW_MODE_ADHOC;
1163                 cev = iwe_stream_add_event(info, cev, end_buf,
1164                                            &iwe, IW_EV_UINT_LEN);
1165
1166                 iwe.cmd = SIOCGIWFREQ;
1167                 iwe.u.freq.m = zd->rxdata[i+0];
1168                 iwe.u.freq.e = 0;
1169                 cev = iwe_stream_add_event(info, cev, end_buf,
1170                                            &iwe, IW_EV_FREQ_LEN);
1171
1172                 iwe.cmd = SIOCGIWRATE;
1173                 iwe.u.bitrate.fixed = 0;
1174                 iwe.u.bitrate.disabled = 0;
1175                 for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
1176                         iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
1177                         cev = iwe_stream_add_event(info, cev, end_buf,
1178                                                    &iwe, IW_EV_PARAM_LEN);
1179                 }
1180
1181                 iwe.cmd = SIOCGIWENCODE;
1182                 iwe.u.data.length = 0;
1183                 if (zd->rxdata[i+14]&0x10)
1184                         iwe.u.data.flags = IW_ENCODE_ENABLED;
1185                 else
1186                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1187                 cev = iwe_stream_add_point(info, cev, end_buf, &iwe, NULL);
1188
1189                 iwe.cmd = IWEVQUAL;
1190                 iwe.u.qual.qual = zd->rxdata[i+4];
1191                 iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
1192                 iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
1193                 iwe.u.qual.updated = 7;
1194                 cev = iwe_stream_add_event(info, cev, end_buf,
1195                                            &iwe, IW_EV_QUAL_LEN);
1196         }
1197
1198         if (!enabled_save)
1199                 zd1201_disable(zd);
1200
1201         srq->length = cev - extra;
1202         srq->flags = 0;
1203
1204         return 0;
1205 }
1206
1207 static int zd1201_set_essid(struct net_device *dev,
1208     struct iw_request_info *info, struct iw_point *data, char *essid)
1209 {
1210         struct zd1201 *zd = netdev_priv(dev);
1211
1212         if (data->length > IW_ESSID_MAX_SIZE)
1213                 return -EINVAL;
1214         if (data->length < 1)
1215                 data->length = 1;
1216         zd->essidlen = data->length;
1217         memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1218         memcpy(zd->essid, essid, data->length);
1219         return zd1201_join(zd, zd->essid, zd->essidlen);
1220 }
1221
1222 static int zd1201_get_essid(struct net_device *dev,
1223     struct iw_request_info *info, struct iw_point *data, char *essid)
1224 {
1225         struct zd1201 *zd = netdev_priv(dev);
1226
1227         memcpy(essid, zd->essid, zd->essidlen);
1228         data->flags = 1;
1229         data->length = zd->essidlen;
1230
1231         return 0;
1232 }
1233
1234 static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1235     struct iw_point *data, char *nick)
1236 {
1237         strcpy(nick, "zd1201");
1238         data->flags = 1;
1239         data->length = strlen(nick);
1240         return 0;
1241 }
1242
1243 static int zd1201_set_rate(struct net_device *dev,
1244     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1245 {
1246         struct zd1201 *zd = netdev_priv(dev);
1247         short rate;
1248         int err;
1249
1250         switch (rrq->value) {
1251                 case 1000000:
1252                         rate = ZD1201_RATEB1;
1253                         break;
1254                 case 2000000:
1255                         rate = ZD1201_RATEB2;
1256                         break;
1257                 case 5500000:
1258                         rate = ZD1201_RATEB5;
1259                         break;
1260                 case 11000000:
1261                 default:
1262                         rate = ZD1201_RATEB11;
1263                         break;
1264         }
1265         if (!rrq->fixed) { /* Also enable all lower bitrates */
1266                 rate |= rate-1;
1267         }
1268
1269         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1270         if (err)
1271                 return err;
1272
1273         return zd1201_mac_reset(zd);
1274 }
1275
1276 static int zd1201_get_rate(struct net_device *dev,
1277     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1278 {
1279         struct zd1201 *zd = netdev_priv(dev);
1280         short rate;
1281         int err;
1282
1283         err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1284         if (err)
1285                 return err;
1286
1287         switch(rate) {
1288                 case 1:
1289                         rrq->value = 1000000;
1290                         break;
1291                 case 2:
1292                         rrq->value = 2000000;
1293                         break;
1294                 case 5:
1295                         rrq->value = 5500000;
1296                         break;
1297                 case 11:
1298                         rrq->value = 11000000;
1299                         break;
1300                 default:
1301                         rrq->value = 0;
1302         }
1303         rrq->fixed = 0;
1304         rrq->disabled = 0;
1305
1306         return 0;
1307 }
1308
1309 static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1310     struct iw_param *rts, char *extra)
1311 {
1312         struct zd1201 *zd = netdev_priv(dev);
1313         int err;
1314         short val = rts->value;
1315
1316         if (rts->disabled || !rts->fixed)
1317                 val = ZD1201_RTSMAX;
1318         if (val > ZD1201_RTSMAX)
1319                 return -EINVAL;
1320         if (val < 0)
1321                 return -EINVAL;
1322
1323         err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1324         if (err)
1325                 return err;
1326         return zd1201_mac_reset(zd);
1327 }
1328
1329 static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1330     struct iw_param *rts, char *extra)
1331 {
1332         struct zd1201 *zd = netdev_priv(dev);
1333         short rtst;
1334         int err;
1335
1336         err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1337         if (err)
1338                 return err;
1339         rts->value = rtst;
1340         rts->disabled = (rts->value == ZD1201_RTSMAX);
1341         rts->fixed = 1;
1342
1343         return 0;
1344 }
1345
1346 static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1347     struct iw_param *frag, char *extra)
1348 {
1349         struct zd1201 *zd = netdev_priv(dev);
1350         int err;
1351         short val = frag->value;
1352
1353         if (frag->disabled || !frag->fixed)
1354                 val = ZD1201_FRAGMAX;
1355         if (val > ZD1201_FRAGMAX)
1356                 return -EINVAL;
1357         if (val < ZD1201_FRAGMIN)
1358                 return -EINVAL;
1359         if (val & 1)
1360                 return -EINVAL;
1361         err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1362         if (err)
1363                 return err;
1364         return zd1201_mac_reset(zd);
1365 }
1366
1367 static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1368     struct iw_param *frag, char *extra)
1369 {
1370         struct zd1201 *zd = netdev_priv(dev);
1371         short fragt;
1372         int err;
1373
1374         err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1375         if (err)
1376                 return err;
1377         frag->value = fragt;
1378         frag->disabled = (frag->value == ZD1201_FRAGMAX);
1379         frag->fixed = 1;
1380
1381         return 0;
1382 }
1383
1384 static int zd1201_set_retry(struct net_device *dev,
1385     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1386 {
1387         return 0;
1388 }
1389
1390 static int zd1201_get_retry(struct net_device *dev,
1391     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1392 {
1393         return 0;
1394 }
1395
1396 static int zd1201_set_encode(struct net_device *dev,
1397     struct iw_request_info *info, struct iw_point *erq, char *key)
1398 {
1399         struct zd1201 *zd = netdev_priv(dev);
1400         short i;
1401         int err, rid;
1402
1403         if (erq->length > ZD1201_MAXKEYLEN)
1404                 return -EINVAL;
1405
1406         i = (erq->flags & IW_ENCODE_INDEX)-1;
1407         if (i == -1) {
1408                 err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1409                 if (err)
1410                         return err;
1411         } else {
1412                 err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1413                 if (err)
1414                         return err;
1415         }
1416
1417         if (i < 0 || i >= ZD1201_NUMKEYS)
1418                 return -EINVAL;
1419
1420         rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1421         err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1422         if (err)
1423                 return err;
1424         zd->encode_keylen[i] = erq->length;
1425         memcpy(zd->encode_keys[i], key, erq->length);
1426
1427         i=0;
1428         if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1429                 i |= 0x01;
1430                 zd->encode_enabled = 1;
1431         } else
1432                 zd->encode_enabled = 0;
1433         if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1434                 i |= 0x02;
1435                 zd->encode_restricted = 1;
1436         } else
1437                 zd->encode_restricted = 0;
1438         err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1439         if (err)
1440                 return err;
1441
1442         if (zd->encode_enabled)
1443                 i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1444         else
1445                 i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1446         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1447         if (err)
1448                 return err;
1449
1450         return zd1201_mac_reset(zd);
1451 }
1452
1453 static int zd1201_get_encode(struct net_device *dev,
1454     struct iw_request_info *info, struct iw_point *erq, char *key)
1455 {
1456         struct zd1201 *zd = netdev_priv(dev);
1457         short i;
1458         int err;
1459
1460         if (zd->encode_enabled)
1461                 erq->flags = IW_ENCODE_ENABLED;
1462         else
1463                 erq->flags = IW_ENCODE_DISABLED;
1464         if (zd->encode_restricted)
1465                 erq->flags |= IW_ENCODE_RESTRICTED;
1466         else
1467                 erq->flags |= IW_ENCODE_OPEN;
1468
1469         i = (erq->flags & IW_ENCODE_INDEX) -1;
1470         if (i == -1) {
1471                 err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1472                 if (err)
1473                         return err;
1474         }
1475         if (i<0 || i>= ZD1201_NUMKEYS)
1476                 return -EINVAL;
1477
1478         erq->flags |= i+1;
1479
1480         erq->length = zd->encode_keylen[i];
1481         memcpy(key, zd->encode_keys[i], erq->length);
1482
1483         return 0;
1484 }
1485
1486 static int zd1201_set_power(struct net_device *dev,
1487     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1488 {
1489         struct zd1201 *zd = netdev_priv(dev);
1490         short enabled, duration, level;
1491         int err;
1492
1493         enabled = vwrq->disabled ? 0 : 1;
1494         if (enabled) {
1495                 if (vwrq->flags & IW_POWER_PERIOD) {
1496                         duration = vwrq->value;
1497                         err = zd1201_setconfig16(zd,
1498                             ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1499                         if (err)
1500                                 return err;
1501                         goto out;
1502                 }
1503                 if (vwrq->flags & IW_POWER_TIMEOUT) {
1504                         err = zd1201_getconfig16(zd,
1505                             ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1506                         if (err)
1507                                 return err;
1508                         level = vwrq->value * 4 / duration;
1509                         if (level > 4)
1510                                 level = 4;
1511                         if (level < 0)
1512                                 level = 0;
1513                         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1514                             level);
1515                         if (err)
1516                                 return err;
1517                         goto out;
1518                 }
1519                 return -EINVAL;
1520         }
1521 out:
1522         return zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1523 }
1524
1525 static int zd1201_get_power(struct net_device *dev,
1526     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1527 {
1528         struct zd1201 *zd = netdev_priv(dev);
1529         short enabled, level, duration;
1530         int err;
1531
1532         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1533         if (err)
1534                 return err;
1535         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1536         if (err)
1537                 return err;
1538         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1539         if (err)
1540                 return err;
1541         vwrq->disabled = enabled ? 0 : 1;
1542         if (vwrq->flags & IW_POWER_TYPE) {
1543                 if (vwrq->flags & IW_POWER_PERIOD) {
1544                         vwrq->value = duration;
1545                         vwrq->flags = IW_POWER_PERIOD;
1546                 } else {
1547                         vwrq->value = duration * level / 4;
1548                         vwrq->flags = IW_POWER_TIMEOUT;
1549                 }
1550         }
1551         if (vwrq->flags & IW_POWER_MODE) {
1552                 if (enabled && level)
1553                         vwrq->flags = IW_POWER_UNICAST_R;
1554                 else
1555                         vwrq->flags = IW_POWER_ALL_R;
1556         }
1557
1558         return 0;
1559 }
1560
1561
1562 static const iw_handler zd1201_iw_handler[] =
1563 {
1564         (iw_handler) zd1201_config_commit,      /* SIOCSIWCOMMIT */
1565         (iw_handler) zd1201_get_name,           /* SIOCGIWNAME */
1566         (iw_handler) NULL,                      /* SIOCSIWNWID */
1567         (iw_handler) NULL,                      /* SIOCGIWNWID */
1568         (iw_handler) zd1201_set_freq,           /* SIOCSIWFREQ */
1569         (iw_handler) zd1201_get_freq,           /* SIOCGIWFREQ */
1570         (iw_handler) zd1201_set_mode,           /* SIOCSIWMODE */
1571         (iw_handler) zd1201_get_mode,           /* SIOCGIWMODE */
1572         (iw_handler) NULL,                      /* SIOCSIWSENS */
1573         (iw_handler) NULL,                      /* SIOCGIWSENS */
1574         (iw_handler) NULL,                      /* SIOCSIWRANGE */
1575         (iw_handler) zd1201_get_range,           /* SIOCGIWRANGE */
1576         (iw_handler) NULL,                      /* SIOCSIWPRIV */
1577         (iw_handler) NULL,                      /* SIOCGIWPRIV */
1578         (iw_handler) NULL,                      /* SIOCSIWSTATS */
1579         (iw_handler) NULL,                      /* SIOCGIWSTATS */
1580         (iw_handler) NULL,                      /* SIOCSIWSPY */
1581         (iw_handler) NULL,                      /* SIOCGIWSPY */
1582         (iw_handler) NULL,                      /* -- hole -- */
1583         (iw_handler) NULL,                      /* -- hole -- */
1584         (iw_handler) NULL/*zd1201_set_wap*/,            /* SIOCSIWAP */
1585         (iw_handler) zd1201_get_wap,            /* SIOCGIWAP */
1586         (iw_handler) NULL,                      /* -- hole -- */
1587         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
1588         (iw_handler) zd1201_set_scan,           /* SIOCSIWSCAN */
1589         (iw_handler) zd1201_get_scan,           /* SIOCGIWSCAN */
1590         (iw_handler) zd1201_set_essid,          /* SIOCSIWESSID */
1591         (iw_handler) zd1201_get_essid,          /* SIOCGIWESSID */
1592         (iw_handler) NULL,                      /* SIOCSIWNICKN */
1593         (iw_handler) zd1201_get_nick,           /* SIOCGIWNICKN */
1594         (iw_handler) NULL,                      /* -- hole -- */
1595         (iw_handler) NULL,                      /* -- hole -- */
1596         (iw_handler) zd1201_set_rate,           /* SIOCSIWRATE */
1597         (iw_handler) zd1201_get_rate,           /* SIOCGIWRATE */
1598         (iw_handler) zd1201_set_rts,            /* SIOCSIWRTS */
1599         (iw_handler) zd1201_get_rts,            /* SIOCGIWRTS */
1600         (iw_handler) zd1201_set_frag,           /* SIOCSIWFRAG */
1601         (iw_handler) zd1201_get_frag,           /* SIOCGIWFRAG */
1602         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
1603         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
1604         (iw_handler) zd1201_set_retry,          /* SIOCSIWRETRY */
1605         (iw_handler) zd1201_get_retry,          /* SIOCGIWRETRY */
1606         (iw_handler) zd1201_set_encode,         /* SIOCSIWENCODE */
1607         (iw_handler) zd1201_get_encode,         /* SIOCGIWENCODE */
1608         (iw_handler) zd1201_set_power,          /* SIOCSIWPOWER */
1609         (iw_handler) zd1201_get_power,          /* SIOCGIWPOWER */
1610 };
1611
1612 static int zd1201_set_hostauth(struct net_device *dev,
1613     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1614 {
1615         struct zd1201 *zd = netdev_priv(dev);
1616
1617         if (!zd->ap)
1618                 return -EOPNOTSUPP;
1619
1620         return zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1621 }
1622
1623 static int zd1201_get_hostauth(struct net_device *dev,
1624     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1625 {
1626         struct zd1201 *zd = netdev_priv(dev);
1627         short hostauth;
1628         int err;
1629
1630         if (!zd->ap)
1631                 return -EOPNOTSUPP;
1632
1633         err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1634         if (err)
1635                 return err;
1636         rrq->value = hostauth;
1637         rrq->fixed = 1;
1638
1639         return 0;
1640 }
1641
1642 static int zd1201_auth_sta(struct net_device *dev,
1643     struct iw_request_info *info, struct sockaddr *sta, char *extra)
1644 {
1645         struct zd1201 *zd = netdev_priv(dev);
1646         unsigned char buffer[10];
1647
1648         if (!zd->ap)
1649                 return -EOPNOTSUPP;
1650
1651         memcpy(buffer, sta->sa_data, ETH_ALEN);
1652         *(short*)(buffer+6) = 0;        /* 0==success, 1==failure */
1653         *(short*)(buffer+8) = 0;
1654
1655         return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1656 }
1657
1658 static int zd1201_set_maxassoc(struct net_device *dev,
1659     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1660 {
1661         struct zd1201 *zd = netdev_priv(dev);
1662         int err;
1663
1664         if (!zd->ap)
1665                 return -EOPNOTSUPP;
1666
1667         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1668         if (err)
1669                 return err;
1670         return 0;
1671 }
1672
1673 static int zd1201_get_maxassoc(struct net_device *dev,
1674     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1675 {
1676         struct zd1201 *zd = netdev_priv(dev);
1677         short maxassoc;
1678         int err;
1679
1680         if (!zd->ap)
1681                 return -EOPNOTSUPP;
1682
1683         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1684         if (err)
1685                 return err;
1686         rrq->value = maxassoc;
1687         rrq->fixed = 1;
1688
1689         return 0;
1690 }
1691
1692 static const iw_handler zd1201_private_handler[] = {
1693         (iw_handler) zd1201_set_hostauth,       /* ZD1201SIWHOSTAUTH */
1694         (iw_handler) zd1201_get_hostauth,       /* ZD1201GIWHOSTAUTH */
1695         (iw_handler) zd1201_auth_sta,           /* ZD1201SIWAUTHSTA */
1696         (iw_handler) NULL,                      /* nothing to get */
1697         (iw_handler) zd1201_set_maxassoc,       /* ZD1201SIMAXASSOC */
1698         (iw_handler) zd1201_get_maxassoc,       /* ZD1201GIMAXASSOC */
1699 };
1700
1701 static const struct iw_priv_args zd1201_private_args[] = {
1702         { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1703             IW_PRIV_TYPE_NONE, "sethostauth" },
1704         { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1705             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1706         { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1707             IW_PRIV_TYPE_NONE, "authstation" },
1708         { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1709             IW_PRIV_TYPE_NONE, "setmaxassoc" },
1710         { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1711             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1712 };
1713
1714 static const struct iw_handler_def zd1201_iw_handlers = {
1715         .num_standard           = ARRAY_SIZE(zd1201_iw_handler),
1716         .num_private            = ARRAY_SIZE(zd1201_private_handler),
1717         .num_private_args       = ARRAY_SIZE(zd1201_private_args),
1718         .standard               = (iw_handler *)zd1201_iw_handler,
1719         .private                = (iw_handler *)zd1201_private_handler,
1720         .private_args           = (struct iw_priv_args *) zd1201_private_args,
1721         .get_wireless_stats     = zd1201_get_wireless_stats,
1722 };
1723
1724 static const struct net_device_ops zd1201_netdev_ops = {
1725         .ndo_open               = zd1201_net_open,
1726         .ndo_stop               = zd1201_net_stop,
1727         .ndo_start_xmit         = zd1201_hard_start_xmit,
1728         .ndo_tx_timeout         = zd1201_tx_timeout,
1729         .ndo_set_multicast_list = zd1201_set_multicast,
1730         .ndo_set_mac_address    = zd1201_set_mac_address,
1731         .ndo_change_mtu         = eth_change_mtu,
1732         .ndo_validate_addr      = eth_validate_addr,
1733 };
1734
1735 static int zd1201_probe(struct usb_interface *interface,
1736                         const struct usb_device_id *id)
1737 {
1738         struct zd1201 *zd;
1739         struct net_device *dev;
1740         struct usb_device *usb;
1741         int err;
1742         short porttype;
1743         char buf[IW_ESSID_MAX_SIZE+2];
1744
1745         usb = interface_to_usbdev(interface);
1746
1747         dev = alloc_etherdev(sizeof(*zd));
1748         if (!dev)
1749                 return -ENOMEM;
1750         zd = netdev_priv(dev);
1751         zd->dev = dev;
1752
1753         zd->ap = ap;
1754         zd->usb = usb;
1755         zd->removed = 0;
1756         init_waitqueue_head(&zd->rxdataq);
1757         INIT_HLIST_HEAD(&zd->fraglist);
1758
1759         err = zd1201_fw_upload(usb, zd->ap);
1760         if (err) {
1761                 dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
1762                 goto err_zd;
1763         }
1764
1765         zd->endp_in = 1;
1766         zd->endp_out = 1;
1767         zd->endp_out2 = 2;
1768         zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1769         zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1770         if (!zd->rx_urb || !zd->tx_urb)
1771                 goto err_zd;
1772
1773         mdelay(100);
1774         err = zd1201_drvr_start(zd);
1775         if (err)
1776                 goto err_zd;
1777
1778         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
1779         if (err)
1780                 goto err_start;
1781
1782         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
1783             ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
1784         if (err)
1785                 goto err_start;
1786
1787         dev->netdev_ops = &zd1201_netdev_ops;
1788         dev->wireless_handlers = &zd1201_iw_handlers;
1789         dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
1790         strcpy(dev->name, "wlan%d");
1791
1792         err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR,
1793             dev->dev_addr, dev->addr_len);
1794         if (err)
1795                 goto err_start;
1796
1797         /* Set wildcard essid to match zd->essid */
1798         *(__le16 *)buf = cpu_to_le16(0);
1799         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
1800             IW_ESSID_MAX_SIZE+2, 1);
1801         if (err)
1802                 goto err_start;
1803
1804         if (zd->ap)
1805                 porttype = ZD1201_PORTTYPE_AP;
1806         else
1807                 porttype = ZD1201_PORTTYPE_BSS;
1808         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1809         if (err)
1810                 goto err_start;
1811
1812         SET_NETDEV_DEV(dev, &usb->dev);
1813
1814         err = register_netdev(dev);
1815         if (err)
1816                 goto err_start;
1817         dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
1818             dev->name);
1819
1820         usb_set_intfdata(interface, zd);
1821         zd1201_enable(zd);      /* zd1201 likes to startup enabled, */
1822         zd1201_disable(zd);     /* interfering with all the wifis in range */
1823         return 0;
1824
1825 err_start:
1826         /* Leave the device in reset state */
1827         zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
1828 err_zd:
1829         usb_free_urb(zd->tx_urb);
1830         usb_free_urb(zd->rx_urb);
1831         free_netdev(dev);
1832         return err;
1833 }
1834
1835 static void zd1201_disconnect(struct usb_interface *interface)
1836 {
1837         struct zd1201 *zd=(struct zd1201 *)usb_get_intfdata(interface);
1838         struct hlist_node *node, *node2;
1839         struct zd1201_frag *frag;
1840
1841         if (!zd)
1842                 return;
1843         usb_set_intfdata(interface, NULL);
1844
1845         hlist_for_each_entry_safe(frag, node, node2, &zd->fraglist, fnode) {
1846                 hlist_del_init(&frag->fnode);
1847                 kfree_skb(frag->skb);
1848                 kfree(frag);
1849         }
1850
1851         if (zd->tx_urb) {
1852                 usb_kill_urb(zd->tx_urb);
1853                 usb_free_urb(zd->tx_urb);
1854         }
1855         if (zd->rx_urb) {
1856                 usb_kill_urb(zd->rx_urb);
1857                 usb_free_urb(zd->rx_urb);
1858         }
1859
1860         if (zd->dev) {
1861                 unregister_netdev(zd->dev);
1862                 free_netdev(zd->dev);
1863         }
1864 }
1865
1866 #ifdef CONFIG_PM
1867
1868 static int zd1201_suspend(struct usb_interface *interface,
1869                            pm_message_t message)
1870 {
1871         struct zd1201 *zd = usb_get_intfdata(interface);
1872
1873         netif_device_detach(zd->dev);
1874
1875         zd->was_enabled = zd->mac_enabled;
1876
1877         if (zd->was_enabled)
1878                 return zd1201_disable(zd);
1879         else
1880                 return 0;
1881 }
1882
1883 static int zd1201_resume(struct usb_interface *interface)
1884 {
1885         struct zd1201 *zd = usb_get_intfdata(interface);
1886
1887         if (!zd || !zd->dev)
1888                 return -ENODEV;
1889
1890         netif_device_attach(zd->dev);
1891
1892         if (zd->was_enabled)
1893                 return zd1201_enable(zd);
1894         else
1895                 return 0;
1896 }
1897
1898 #else
1899
1900 #define zd1201_suspend NULL
1901 #define zd1201_resume  NULL
1902
1903 #endif
1904
1905 static struct usb_driver zd1201_usb = {
1906         .name = "zd1201",
1907         .probe = zd1201_probe,
1908         .disconnect = zd1201_disconnect,
1909         .id_table = zd1201_table,
1910         .suspend = zd1201_suspend,
1911         .resume = zd1201_resume,
1912 };
1913
1914 static int __init zd1201_init(void)
1915 {
1916         return usb_register(&zd1201_usb);
1917 }
1918
1919 static void __exit zd1201_cleanup(void)
1920 {
1921         usb_deregister(&zd1201_usb);
1922 }
1923
1924 module_init(zd1201_init);
1925 module_exit(zd1201_cleanup);