drivers/net/wireless/zydas/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/slab.h>
  18 #include <linux/netdevice.h>
  19 #include <linux/etherdevice.h>
  20 #include <linux/wireless.h>
  21 #include <net/cfg80211.h>
  22 #include <net/iw_handler.h>
  23 #include <linux/string.h>
  24 #include <linux/if_arp.h>
  25 #include <linux/firmware.h>
  26 #include "zd1201.h"
  27
  28 static struct usb_device_id zd1201_table[] = {
  29         {USB_DEVICE(0x0586, 0x3400)}, /* Peabird Wireless USB Adapter */
  30         {USB_DEVICE(0x0ace, 0x1201)}, /* ZyDAS ZD1201 Wireless USB Adapter */
  31         {USB_DEVICE(0x050d, 0x6051)}, /* Belkin F5D6051 usb  adapter */
  32         {USB_DEVICE(0x0db0, 0x6823)}, /* MSI UB11B usb  adapter */
  33         {USB_DEVICE(0x1044, 0x8004)}, /* Gigabyte GN-WLBZ101 */
  34         {USB_DEVICE(0x1044, 0x8005)}, /* GIGABYTE GN-WLBZ201 usb adapter */
  35         {}
  36 };
  37
  38 static int ap;  /* Are we an AP or a normal station? */
  39
  40 #define ZD1201_VERSION  "0.15"
  41
  42 MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>");
  43 MODULE_DESCRIPTION("Driver for ZyDAS ZD1201 based USB Wireless adapters");
  44 MODULE_VERSION(ZD1201_VERSION);
  45 MODULE_LICENSE("GPL");
  46 module_param(ap, int, 0);
  47 MODULE_PARM_DESC(ap, "If non-zero Access Point firmware will be loaded");
  48 MODULE_DEVICE_TABLE(usb, zd1201_table);
  49
  50
  51 static int zd1201_fw_upload(struct usb_device *dev, int apfw)
  52 {
  53         const struct firmware *fw_entry;
  54         const char *data;
  55         unsigned long len;
  56         int err;
  57         unsigned char ret;
  58         char *buf;
  59         char *fwfile;
  60
  61         if (apfw)
  62                 fwfile = "/*(DEBLOBBED)*/";
  63         else
  64                 fwfile = "/*(DEBLOBBED)*/";
  65
  66         err = reject_firmware(&fw_entry, fwfile, &dev->dev);
  67         if (err) {
  68                 dev_err(&dev->dev, "Failed to load %s firmware file!\n", fwfile);
  69                 dev_err(&dev->dev, "Make sure the hotplug firmware loader is installed.\n");
  70                 dev_err(&dev->dev, "Goto http://linux-lc100020.sourceforge.net for more info.\n");
  71                 return err;
  72         }
  73
  74         data = fw_entry->data;
  75         len = fw_entry->size;
  76
  77         buf = kmalloc(1024, GFP_ATOMIC);
  78         if (!buf) {
  79                 err = -ENOMEM;
  80                 goto exit;
  81         }
  82
  83         while (len > 0) {
  84                 int translen = (len > 1024) ? 1024 : len;
  85                 memcpy(buf, data, translen);
  86
  87                 err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0,
  88                     USB_DIR_OUT | 0x40, 0, 0, buf, translen,
  89                     ZD1201_FW_TIMEOUT);
  90                 if (err < 0)
  91                         goto exit;
  92
  93                 len -= translen;
  94                 data += translen;
  95         }
  96
  97         err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0x2,
  98             USB_DIR_OUT | 0x40, 0, 0, NULL, 0, ZD1201_FW_TIMEOUT);
  99         if (err < 0)
 100                 goto exit;
 101
 102         err = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 0x4,
 103             USB_DIR_IN | 0x40, 0, 0, buf, sizeof(ret), ZD1201_FW_TIMEOUT);
 104         if (err < 0)
 105                 goto exit;
 106
 107         memcpy(&ret, buf, sizeof(ret));
 108
 109         if (ret & 0x80) {
 110                 err = -EIO;
 111                 goto exit;
 112         }
 113
 114         err = 0;
 115 exit:
 116         kfree(buf);
 117         release_firmware(fw_entry);
 118         return err;
 119 }
 120
 121 /*(DEBLOBBED)*/
 122
 123 static void zd1201_usbfree(struct urb *urb)
 124 {
 125         struct zd1201 *zd = urb->context;
 126
 127         switch(urb->status) {
 128                 case -EILSEQ:
 129                 case -ENODEV:
 130                 case -ETIME:
 131                 case -ENOENT:
 132                 case -EPIPE:
 133                 case -EOVERFLOW:
 134                 case -ESHUTDOWN:
 135                         dev_warn(&zd->usb->dev, "%s: urb failed: %d\n",
 136                             zd->dev->name, urb->status);
 137         }
 138
 139         kfree(urb->transfer_buffer);
 140         usb_free_urb(urb);
 141 }
 142
 143 /* cmdreq message:
 144         u32 type
 145         u16 cmd
 146         u16 parm0
 147         u16 parm1
 148         u16 parm2
 149         u8  pad[4]
 150
 151         total: 4 + 2 + 2 + 2 + 2 + 4 = 16
 152 */
 153 static int zd1201_docmd(struct zd1201 *zd, int cmd, int parm0,
 154                         int parm1, int parm2)
 155 {
 156         unsigned char *command;
 157         int ret;
 158         struct urb *urb;
 159
 160         command = kmalloc(16, GFP_ATOMIC);
 161         if (!command)
 162                 return -ENOMEM;
 163
 164         *((__le32*)command) = cpu_to_le32(ZD1201_USB_CMDREQ);
 165         *((__le16*)&command[4]) = cpu_to_le16(cmd);
 166         *((__le16*)&command[6]) = cpu_to_le16(parm0);
 167         *((__le16*)&command[8]) = cpu_to_le16(parm1);
 168         *((__le16*)&command[10])= cpu_to_le16(parm2);
 169
 170         urb = usb_alloc_urb(0, GFP_ATOMIC);
 171         if (!urb) {
 172                 kfree(command);
 173                 return -ENOMEM;
 174         }
 175         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 176                           command, 16, zd1201_usbfree, zd);
 177         ret = usb_submit_urb(urb, GFP_ATOMIC);
 178         if (ret) {
 179                 kfree(command);
 180                 usb_free_urb(urb);
 181         }
 182
 183         return ret;
 184 }
 185
 186 /* Callback after sending out a packet */
 187 static void zd1201_usbtx(struct urb *urb)
 188 {
 189         struct zd1201 *zd = urb->context;
 190         netif_wake_queue(zd->dev);
 191 }
 192
 193 /* Incoming data */
 194 static void zd1201_usbrx(struct urb *urb)
 195 {
 196         struct zd1201 *zd = urb->context;
 197         int free = 0;
 198         unsigned char *data = urb->transfer_buffer;
 199         struct sk_buff *skb;
 200         unsigned char type;
 201
 202         if (!zd)
 203                 return;
 204
 205         switch(urb->status) {
 206                 case -EILSEQ:
 207                 case -ENODEV:
 208                 case -ETIME:
 209                 case -ENOENT:
 210                 case -EPIPE:
 211                 case -EOVERFLOW:
 212                 case -ESHUTDOWN:
 213                         dev_warn(&zd->usb->dev, "%s: rx urb failed: %d\n",
 214                             zd->dev->name, urb->status);
 215                         free = 1;
 216                         goto exit;
 217         }
 218
 219         if (urb->status != 0 || urb->actual_length == 0)
 220                 goto resubmit;
 221
 222         type = data[0];
 223         if (type == ZD1201_PACKET_EVENTSTAT || type == ZD1201_PACKET_RESOURCE) {
 224                 memcpy(zd->rxdata, data, urb->actual_length);
 225                 zd->rxlen = urb->actual_length;
 226                 zd->rxdatas = 1;
 227                 wake_up(&zd->rxdataq);
 228         }
 229         /* Info frame */
 230         if (type == ZD1201_PACKET_INQUIRE) {
 231                 int i = 0;
 232                 unsigned short infotype, framelen, copylen;
 233                 framelen = le16_to_cpu(*(__le16*)&data[4]);
 234                 infotype = le16_to_cpu(*(__le16*)&data[6]);
 235
 236                 if (infotype == ZD1201_INF_LINKSTATUS) {
 237                         short linkstatus;
 238
 239                         linkstatus = le16_to_cpu(*(__le16*)&data[8]);
 240                         switch(linkstatus) {
 241                                 case 1:
 242                                         netif_carrier_on(zd->dev);
 243                                         break;
 244                                 case 2:
 245                                         netif_carrier_off(zd->dev);
 246                                         break;
 247                                 case 3:
 248                                         netif_carrier_off(zd->dev);
 249                                         break;
 250                                 case 4:
 251                                         netif_carrier_on(zd->dev);
 252                                         break;
 253                                 default:
 254                                         netif_carrier_off(zd->dev);
 255                         }
 256                         goto resubmit;
 257                 }
 258                 if (infotype == ZD1201_INF_ASSOCSTATUS) {
 259                         short status = le16_to_cpu(*(__le16*)(data+8));
 260                         int event;
 261                         union iwreq_data wrqu;
 262
 263                         switch (status) {
 264                                 case ZD1201_ASSOCSTATUS_STAASSOC:
 265                                 case ZD1201_ASSOCSTATUS_REASSOC:
 266                                         event = IWEVREGISTERED;
 267                                         break;
 268                                 case ZD1201_ASSOCSTATUS_DISASSOC:
 269                                 case ZD1201_ASSOCSTATUS_ASSOCFAIL:
 270                                 case ZD1201_ASSOCSTATUS_AUTHFAIL:
 271                                 default:
 272                                         event = IWEVEXPIRED;
 273                         }
 274                         memcpy(wrqu.addr.sa_data, data+10, ETH_ALEN);
 275                         wrqu.addr.sa_family = ARPHRD_ETHER;
 276
 277                         /* Send event to user space */
 278                         wireless_send_event(zd->dev, event, &wrqu, NULL);
 279
 280                         goto resubmit;
 281                 }
 282                 if (infotype == ZD1201_INF_AUTHREQ) {
 283                         union iwreq_data wrqu;
 284
 285                         memcpy(wrqu.addr.sa_data, data+8, ETH_ALEN);
 286                         wrqu.addr.sa_family = ARPHRD_ETHER;
 287                         /* There isn't a event that trully fits this request.
 288                            We assume that userspace will be smart enough to
 289                            see a new station being expired and sends back a
 290                            authstation ioctl to authorize it. */
 291                         wireless_send_event(zd->dev, IWEVEXPIRED, &wrqu, NULL);
 292                         goto resubmit;
 293                 }
 294                 /* Other infotypes are handled outside this handler */
 295                 zd->rxlen = 0;
 296                 while (i < urb->actual_length) {
 297                         copylen = le16_to_cpu(*(__le16*)&data[i+2]);
 298                         /* Sanity check, sometimes we get junk */
 299                         if (copylen+zd->rxlen > sizeof(zd->rxdata))
 300                                 break;
 301                         memcpy(zd->rxdata+zd->rxlen, data+i+4, copylen);
 302                         zd->rxlen += copylen;
 303                         i += 64;
 304                 }
 305                 if (i >= urb->actual_length) {
 306                         zd->rxdatas = 1;
 307                         wake_up(&zd->rxdataq);
 308                 }
 309                 goto  resubmit;
 310         }
 311         /* Actual data */
 312         if (data[urb->actual_length-1] == ZD1201_PACKET_RXDATA) {
 313                 int datalen = urb->actual_length-1;
 314                 unsigned short len, fc, seq;
 315
 316                 len = ntohs(*(__be16 *)&data[datalen-2]);
 317                 if (len>datalen)
 318                         len=datalen;
 319                 fc = le16_to_cpu(*(__le16 *)&data[datalen-16]);
 320                 seq = le16_to_cpu(*(__le16 *)&data[datalen-24]);
 321
 322                 if (zd->monitor) {
 323                         if (datalen < 24)
 324                                 goto resubmit;
 325                         if (!(skb = dev_alloc_skb(datalen+24)))
 326                                 goto resubmit;
 327
 328                         memcpy(skb_put(skb, 2), &data[datalen-16], 2);
 329                         memcpy(skb_put(skb, 2), &data[datalen-2], 2);
 330                         memcpy(skb_put(skb, 6), &data[datalen-14], 6);
 331                         memcpy(skb_put(skb, 6), &data[datalen-22], 6);
 332                         memcpy(skb_put(skb, 6), &data[datalen-8], 6);
 333                         memcpy(skb_put(skb, 2), &data[datalen-24], 2);
 334                         memcpy(skb_put(skb, len), data, len);
 335                         skb->protocol = eth_type_trans(skb, zd->dev);
 336                         zd->dev->stats.rx_packets++;
 337                         zd->dev->stats.rx_bytes += skb->len;
 338                         netif_rx(skb);
 339                         goto resubmit;
 340                 }
 341
 342                 if ((seq & IEEE80211_SCTL_FRAG) ||
 343                     (fc & IEEE80211_FCTL_MOREFRAGS)) {
 344                         struct zd1201_frag *frag = NULL;
 345                         char *ptr;
 346
 347                         if (datalen<14)
 348                                 goto resubmit;
 349                         if ((seq & IEEE80211_SCTL_FRAG) == 0) {
 350                                 frag = kmalloc(sizeof(*frag), GFP_ATOMIC);
 351                                 if (!frag)
 352                                         goto resubmit;
 353                                 skb = dev_alloc_skb(IEEE80211_MAX_DATA_LEN +14+2);
 354                                 if (!skb) {
 355                                         kfree(frag);
 356                                         goto resubmit;
 357                                 }
 358                                 frag->skb = skb;
 359                                 frag->seq = seq & IEEE80211_SCTL_SEQ;
 360                                 skb_reserve(skb, 2);
 361                                 memcpy(skb_put(skb, 12), &data[datalen-14], 12);
 362                                 memcpy(skb_put(skb, 2), &data[6], 2);
 363                                 memcpy(skb_put(skb, len), data+8, len);
 364                                 hlist_add_head(&frag->fnode, &zd->fraglist);
 365                                 goto resubmit;
 366                         }
 367                         hlist_for_each_entry(frag, &zd->fraglist, fnode)
 368                                 if (frag->seq == (seq&IEEE80211_SCTL_SEQ))
 369                                         break;
 370                         if (!frag)
 371                                 goto resubmit;
 372                         skb = frag->skb;
 373                         ptr = skb_put(skb, len);
 374                         if (ptr)
 375                                 memcpy(ptr, data+8, len);
 376                         if (fc & IEEE80211_FCTL_MOREFRAGS)
 377                                 goto resubmit;
 378                         hlist_del_init(&frag->fnode);
 379                         kfree(frag);
 380                 } else {
 381                         if (datalen<14)
 382                                 goto resubmit;
 383                         skb = dev_alloc_skb(len + 14 + 2);
 384                         if (!skb)
 385                                 goto resubmit;
 386                         skb_reserve(skb, 2);
 387                         memcpy(skb_put(skb, 12), &data[datalen-14], 12);
 388                         memcpy(skb_put(skb, 2), &data[6], 2);
 389                         memcpy(skb_put(skb, len), data+8, len);
 390                 }
 391                 skb->protocol = eth_type_trans(skb, zd->dev);
 392                 zd->dev->stats.rx_packets++;
 393                 zd->dev->stats.rx_bytes += skb->len;
 394                 netif_rx(skb);
 395         }
 396 resubmit:
 397         memset(data, 0, ZD1201_RXSIZE);
 398
 399         urb->status = 0;
 400         urb->dev = zd->usb;
 401         if(usb_submit_urb(urb, GFP_ATOMIC))
 402                 free = 1;
 403
 404 exit:
 405         if (free) {
 406                 zd->rxlen = 0;
 407                 zd->rxdatas = 1;
 408                 wake_up(&zd->rxdataq);
 409                 kfree(urb->transfer_buffer);
 410         }
 411 }
 412
 413 static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
 414         unsigned int riddatalen)
 415 {
 416         int err;
 417         int i = 0;
 418         int code;
 419         int rid_fid;
 420         int length;
 421         unsigned char *pdata;
 422
 423         zd->rxdatas = 0;
 424         err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
 425         if (err)
 426                 return err;
 427
 428         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 429         if (!zd->rxlen)
 430                 return -EIO;
 431
 432         code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
 433         rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
 434         length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
 435         if (length > zd->rxlen)
 436                 length = zd->rxlen-6;
 437
 438         /* If access bit is not on, then error */
 439         if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
 440                 return -EINVAL;
 441
 442         /* Not enough buffer for allocating data */
 443         if (riddatalen != (length - 4)) {
 444                 dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
 445                     riddatalen, zd->rxlen, length, rid, rid_fid);
 446                 return -ENODATA;
 447         }
 448
 449         zd->rxdatas = 0;
 450         /* Issue SetRxRid commnd */
 451         err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
 452         if (err)
 453                 return err;
 454
 455         /* Receive RID record from resource packets */
 456         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 457         if (!zd->rxlen)
 458                 return -EIO;
 459
 460         if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
 461                 dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
 462                     zd->rxdata[zd->rxlen-1]);
 463                 return -EINVAL;
 464         }
 465
 466         /* Set the data pointer and received data length */
 467         pdata = zd->rxdata;
 468         length = zd->rxlen;
 469
 470         do {
 471                 int actual_length;
 472
 473                 actual_length = (length > 64) ? 64 : length;
 474
 475                 if (pdata[0] != 0x3) {
 476                         dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
 477                             pdata[0]);
 478                         return -EINVAL;
 479                 }
 480
 481                 if (actual_length != 64) {
 482                         /* Trim the last packet type byte */
 483                         actual_length--;
 484                 }
 485
 486                 /* Skip the 4 bytes header (RID length and RID) */
 487                 if (i == 0) {
 488                         pdata += 8;
 489                         actual_length -= 8;
 490                 } else {
 491                         pdata += 4;
 492                         actual_length -= 4;
 493                 }
 494
 495                 memcpy(riddata, pdata, actual_length);
 496                 riddata += actual_length;
 497                 pdata += actual_length;
 498                 length -= 64;
 499                 i++;
 500         } while (length > 0);
 501
 502         return 0;
 503 }
 504
 505 /*
 506  *      resreq:
 507  *              byte    type
 508  *              byte    sequence
 509  *              u16     reserved
 510  *              byte    data[12]
 511  *      total: 16
 512  */
 513 static int zd1201_setconfig(struct zd1201 *zd, int rid, void *buf, int len, int wait)
 514 {
 515         int err;
 516         unsigned char *request;
 517         int reqlen;
 518         char seq=0;
 519         struct urb *urb;
 520         gfp_t gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
 521
 522         len += 4;                       /* first 4 are for header */
 523
 524         zd->rxdatas = 0;
 525         zd->rxlen = 0;
 526         for (seq=0; len > 0; seq++) {
 527                 request = kmalloc(16, gfp_mask);
 528                 if (!request)
 529                         return -ENOMEM;
 530                 urb = usb_alloc_urb(0, gfp_mask);
 531                 if (!urb) {
 532                         kfree(request);
 533                         return -ENOMEM;
 534                 }
 535                 memset(request, 0, 16);
 536                 reqlen = len>12 ? 12 : len;
 537                 request[0] = ZD1201_USB_RESREQ;
 538                 request[1] = seq;
 539                 request[2] = 0;
 540                 request[3] = 0;
 541                 if (request[1] == 0) {
 542                         /* add header */
 543                         *(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
 544                         *(__le16*)&request[6] = cpu_to_le16(rid);
 545                         memcpy(request+8, buf, reqlen-4);
 546                         buf += reqlen-4;
 547                 } else {
 548                         memcpy(request+4, buf, reqlen);
 549                         buf += reqlen;
 550                 }
 551
 552                 len -= reqlen;
 553
 554                 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
 555                     zd->endp_out2), request, 16, zd1201_usbfree, zd);
 556                 err = usb_submit_urb(urb, gfp_mask);
 557                 if (err)
 558                         goto err;
 559         }
 560
 561         request = kmalloc(16, gfp_mask);
 562         if (!request)
 563                 return -ENOMEM;
 564         urb = usb_alloc_urb(0, gfp_mask);
 565         if (!urb) {
 566                 kfree(request);
 567                 return -ENOMEM;
 568         }
 569         *((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
 570         *((__le16*)&request[4]) =
 571             cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
 572         *((__le16*)&request[6]) = cpu_to_le16(rid);
 573         *((__le16*)&request[8]) = cpu_to_le16(0);
 574         *((__le16*)&request[10]) = cpu_to_le16(0);
 575         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 576              request, 16, zd1201_usbfree, zd);
 577         err = usb_submit_urb(urb, gfp_mask);
 578         if (err)
 579                 goto err;
 580
 581         if (wait) {
 582                 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 583                 if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
 584                         dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
 585                 }
 586         }
 587
 588         return 0;
 589 err:
 590         kfree(request);
 591         usb_free_urb(urb);
 592         return err;
 593 }
 594
 595 static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
 596 {
 597         int err;
 598         __le16 zdval;
 599
 600         err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
 601         if (err)
 602                 return err;
 603         *val = le16_to_cpu(zdval);
 604         return 0;
 605 }
 606
 607 static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
 608 {
 609         __le16 zdval = cpu_to_le16(val);
 610         return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
 611 }
 612
 613 static int zd1201_drvr_start(struct zd1201 *zd)
 614 {
 615         int err, i;
 616         short max;
 617         __le16 zdmax;
 618         unsigned char *buffer;
 619
 620         buffer = kzalloc(ZD1201_RXSIZE, GFP_KERNEL);
 621         if (!buffer)
 622                 return -ENOMEM;
 623
 624         usb_fill_bulk_urb(zd->rx_urb, zd->usb,
 625             usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
 626             zd1201_usbrx, zd);
 627
 628         err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
 629         if (err)
 630                 goto err_buffer;
 631
 632         err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
 633         if (err)
 634                 goto err_urb;
 635
 636         err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
 637             sizeof(__le16));
 638         if (err)
 639                 goto err_urb;
 640
 641         max = le16_to_cpu(zdmax);
 642         for (i=0; i<max; i++) {
 643                 err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
 644                 if (err)
 645                         goto err_urb;
 646         }
 647
 648         return 0;
 649
 650 err_urb:
 651         usb_kill_urb(zd->rx_urb);
 652         return err;
 653 err_buffer:
 654         kfree(buffer);
 655         return err;
 656 }
 657
 658 /*      Magic alert: The firmware doesn't seem to like the MAC state being
 659  *      toggled in promisc (aka monitor) mode.
 660  *      (It works a number of times, but will halt eventually)
 661  *      So we turn it of before disabling and on after enabling if needed.
 662  */
 663 static int zd1201_enable(struct zd1201 *zd)
 664 {
 665         int err;
 666
 667         if (zd->mac_enabled)
 668                 return 0;
 669
 670         err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
 671         if (!err)
 672                 zd->mac_enabled = 1;
 673
 674         if (zd->monitor)
 675                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
 676
 677         return err;
 678 }
 679
 680 static int zd1201_disable(struct zd1201 *zd)
 681 {
 682         int err;
 683
 684         if (!zd->mac_enabled)
 685                 return 0;
 686         if (zd->monitor) {
 687                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 688                 if (err)
 689                         return err;
 690         }
 691
 692         err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
 693         if (!err)
 694                 zd->mac_enabled = 0;
 695         return err;
 696 }
 697
 698 static int zd1201_mac_reset(struct zd1201 *zd)
 699 {
 700         if (!zd->mac_enabled)
 701                 return 0;
 702         zd1201_disable(zd);
 703         return zd1201_enable(zd);
 704 }
 705
 706 static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
 707 {
 708         int err, val;
 709         char buf[IW_ESSID_MAX_SIZE+2];
 710
 711         err = zd1201_disable(zd);
 712         if (err)
 713                 return err;
 714
 715         val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
 716         val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
 717         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
 718         if (err)
 719                 return err;
 720
 721         *(__le16 *)buf = cpu_to_le16(essidlen);
 722         memcpy(buf+2, essid, essidlen);
 723         if (!zd->ap) {  /* Normal station */
 724                 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
 725                     IW_ESSID_MAX_SIZE+2, 1);
 726                 if (err)
 727                         return err;
 728         } else {        /* AP */
 729                 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
 730                     IW_ESSID_MAX_SIZE+2, 1);
 731                 if (err)
 732                         return err;
 733         }
 734
 735         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 736             zd->dev->dev_addr, zd->dev->addr_len, 1);
 737         if (err)
 738                 return err;
 739
 740         err = zd1201_enable(zd);
 741         if (err)
 742                 return err;
 743
 744         msleep(100);
 745         return 0;
 746 }
 747
 748 static int zd1201_net_open(struct net_device *dev)
 749 {
 750         struct zd1201 *zd = netdev_priv(dev);
 751
 752         /* Start MAC with wildcard if no essid set */
 753         if (!zd->mac_enabled)
 754                 zd1201_join(zd, zd->essid, zd->essidlen);
 755         netif_start_queue(dev);
 756
 757         return 0;
 758 }
 759
 760 static int zd1201_net_stop(struct net_device *dev)
 761 {
 762         netif_stop_queue(dev);
 763         return 0;
 764 }
 765
 766 /*
 767         RFC 1042 encapsulates Ethernet frames in 802.11 frames
 768         by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
 769         (0x00, 0x00, 0x00). Zd requires an additional padding, copy
 770         of ethernet addresses, length of the standard RFC 1042 packet
 771         and a command byte (which is nul for tx).
 772
 773         tx frame (from Wlan NG):
 774         RFC 1042:
 775                 llc             0xAA 0xAA 0x03 (802.2 LLC)
 776                 snap            0x00 0x00 0x00 (Ethernet encapsulated)
 777                 type            2 bytes, Ethernet type field
 778                 payload         (minus eth header)
 779         Zydas specific:
 780                 padding         1B if (skb->len+8+1)%64==0
 781                 Eth MAC addr    12 bytes, Ethernet MAC addresses
 782                 length          2 bytes, RFC 1042 packet length
 783                                 (llc+snap+type+payload)
 784                 zd              1 null byte, zd1201 packet type
 785  */
 786 static netdev_tx_t zd1201_hard_start_xmit(struct sk_buff *skb,
 787                                                 struct net_device *dev)
 788 {
 789         struct zd1201 *zd = netdev_priv(dev);
 790         unsigned char *txbuf = zd->txdata;
 791         int txbuflen, pad = 0, err;
 792         struct urb *urb = zd->tx_urb;
 793
 794         if (!zd->mac_enabled || zd->monitor) {
 795                 dev->stats.tx_dropped++;
 796                 kfree_skb(skb);
 797                 return NETDEV_TX_OK;
 798         }
 799         netif_stop_queue(dev);
 800
 801         txbuflen = skb->len + 8 + 1;
 802         if (txbuflen%64 == 0) {
 803                 pad = 1;
 804                 txbuflen++;
 805         }
 806         txbuf[0] = 0xAA;
 807         txbuf[1] = 0xAA;
 808         txbuf[2] = 0x03;
 809         txbuf[3] = 0x00;        /* rfc1042 */
 810         txbuf[4] = 0x00;
 811         txbuf[5] = 0x00;
 812
 813         skb_copy_from_linear_data_offset(skb, 12, txbuf + 6, skb->len - 12);
 814         if (pad)
 815                 txbuf[skb->len-12+6]=0;
 816         skb_copy_from_linear_data(skb, txbuf + skb->len - 12 + 6 + pad, 12);
 817         *(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
 818         txbuf[txbuflen-1] = 0;
 819
 820         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
 821             txbuf, txbuflen, zd1201_usbtx, zd);
 822
 823         err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
 824         if (err) {
 825                 dev->stats.tx_errors++;
 826                 netif_start_queue(dev);
 827         } else {
 828                 dev->stats.tx_packets++;
 829                 dev->stats.tx_bytes += skb->len;
 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; /* prevent tx timeout */
 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 netdev_hw_addr *ha;
 879         unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
 880         int i;
 881
 882         if (netdev_mc_count(dev) > ZD1201_MAXMULTI)
 883                 return;
 884
 885         i = 0;
 886         netdev_for_each_mc_addr(ha, dev)
 887                 memcpy(reqbuf + i++ * ETH_ALEN, ha->addr, ETH_ALEN);
 888         zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
 889                          netdev_mc_count(dev) * ETH_ALEN, 0);
 890 }
 891
 892 static int zd1201_config_commit(struct net_device *dev,
 893     struct iw_request_info *info, struct iw_point *data, char *essid)
 894 {
 895         struct zd1201 *zd = netdev_priv(dev);
 896
 897         return zd1201_mac_reset(zd);
 898 }
 899
 900 static int zd1201_get_name(struct net_device *dev,
 901     struct iw_request_info *info, char *name, char *extra)
 902 {
 903         strcpy(name, "IEEE 802.11b");
 904         return 0;
 905 }
 906
 907 static int zd1201_set_freq(struct net_device *dev,
 908     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 909 {
 910         struct zd1201 *zd = netdev_priv(dev);
 911         short channel = 0;
 912         int err;
 913
 914         if (freq->e == 0)
 915                 channel = freq->m;
 916         else
 917                 channel = ieee80211_frequency_to_channel(freq->m);
 918
 919         err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
 920         if (err)
 921                 return err;
 922
 923         zd1201_mac_reset(zd);
 924
 925         return 0;
 926 }
 927
 928 static int zd1201_get_freq(struct net_device *dev,
 929     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 930 {
 931         struct zd1201 *zd = netdev_priv(dev);
 932         short channel;
 933         int err;
 934
 935         err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
 936         if (err)
 937                 return err;
 938         freq->e = 0;
 939         freq->m = channel;
 940
 941         return 0;
 942 }
 943
 944 static int zd1201_set_mode(struct net_device *dev,
 945     struct iw_request_info *info, __u32 *mode, char *extra)
 946 {
 947         struct zd1201 *zd = netdev_priv(dev);
 948         short porttype, monitor = 0;
 949         unsigned char buffer[IW_ESSID_MAX_SIZE+2];
 950         int err;
 951
 952         if (zd->ap) {
 953                 if (*mode != IW_MODE_MASTER)
 954                         return -EINVAL;
 955                 return 0;
 956         }
 957
 958         err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 959         if (err)
 960                 return err;
 961         zd->dev->type = ARPHRD_ETHER;
 962         switch(*mode) {
 963                 case IW_MODE_MONITOR:
 964                         monitor = 1;
 965                         zd->dev->type = ARPHRD_IEEE80211;
 966                         /* Make sure we are no longer associated with by
 967                            setting an 'impossible' essid.
 968                            (otherwise we mess up firmware)
 969                          */
 970                         zd1201_join(zd, "\0-*#\0", 5);
 971                         /* Put port in pIBSS */
 972                 case 8: /* No pseudo-IBSS in wireless extensions (yet) */
 973                         porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
 974                         break;
 975                 case IW_MODE_ADHOC:
 976                         porttype = ZD1201_PORTTYPE_IBSS;
 977                         break;
 978                 case IW_MODE_INFRA:
 979                         porttype = ZD1201_PORTTYPE_BSS;
 980                         break;
 981                 default:
 982                         return -EINVAL;
 983         }
 984
 985         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
 986         if (err)
 987                 return err;
 988         if (zd->monitor && !monitor) {
 989                         zd1201_disable(zd);
 990                         *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
 991                         memcpy(buffer+2, zd->essid, zd->essidlen);
 992                         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
 993                             buffer, IW_ESSID_MAX_SIZE+2, 1);
 994                         if (err)
 995                                 return err;
 996         }
 997         zd->monitor = monitor;
 998         /* If monitor mode is set we don't actually turn it on here since it
 999          * is done during mac reset anyway (see zd1201_mac_enable).
1000          */
1001         zd1201_mac_reset(zd);
1002
1003         return 0;
1004 }
1005
1006 static int zd1201_get_mode(struct net_device *dev,
1007     struct iw_request_info *info, __u32 *mode, char *extra)
1008 {
1009         struct zd1201 *zd = netdev_priv(dev);
1010         short porttype;
1011         int err;
1012
1013         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1014         if (err)
1015                 return err;
1016         switch(porttype) {
1017                 case ZD1201_PORTTYPE_IBSS:
1018                         *mode = IW_MODE_ADHOC;
1019                         break;
1020                 case ZD1201_PORTTYPE_BSS:
1021                         *mode = IW_MODE_INFRA;
1022                         break;
1023                 case ZD1201_PORTTYPE_WDS:
1024                         *mode = IW_MODE_REPEAT;
1025                         break;
1026                 case ZD1201_PORTTYPE_PSEUDOIBSS:
1027                         *mode = 8;/* No Pseudo-IBSS... */
1028                         break;
1029                 case ZD1201_PORTTYPE_AP:
1030                         *mode = IW_MODE_MASTER;
1031                         break;
1032                 default:
1033                         dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1034                             porttype);
1035                         *mode = IW_MODE_AUTO;
1036         }
1037         if (zd->monitor)
1038                 *mode = IW_MODE_MONITOR;
1039
1040         return 0;
1041 }
1042
1043 static int zd1201_get_range(struct net_device *dev,
1044     struct iw_request_info *info, struct iw_point *wrq, char *extra)
1045 {
1046         struct iw_range *range = (struct iw_range *)extra;
1047
1048         wrq->length = sizeof(struct iw_range);
1049         memset(range, 0, sizeof(struct iw_range));
1050         range->we_version_compiled = WIRELESS_EXT;
1051         range->we_version_source = WIRELESS_EXT;
1052
1053         range->max_qual.qual = 128;
1054         range->max_qual.level = 128;
1055         range->max_qual.noise = 128;
1056         range->max_qual.updated = 7;
1057
1058         range->encoding_size[0] = 5;
1059         range->encoding_size[1] = 13;
1060         range->num_encoding_sizes = 2;
1061         range->max_encoding_tokens = ZD1201_NUMKEYS;
1062
1063         range->num_bitrates = 4;
1064         range->bitrate[0] = 1000000;
1065         range->bitrate[1] = 2000000;
1066         range->bitrate[2] = 5500000;
1067         range->bitrate[3] = 11000000;
1068
1069         range->min_rts = 0;
1070         range->min_frag = ZD1201_FRAGMIN;
1071         range->max_rts = ZD1201_RTSMAX;
1072         range->min_frag = ZD1201_FRAGMAX;
1073
1074         return 0;
1075 }
1076
1077 /*      Little bit of magic here: we only get the quality if we poll
1078  *      for it, and we never get an actual request to trigger such
1079  *      a poll. Therefore we 'assume' that the user will soon ask for
1080  *      the stats after asking the bssid.
1081  */
1082 static int zd1201_get_wap(struct net_device *dev,
1083     struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1084 {
1085         struct zd1201 *zd = netdev_priv(dev);
1086         unsigned char buffer[6];
1087
1088         if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1089                 /* Unfortunately the quality and noise reported is useless.
1090                    they seem to be accumulators that increase until you
1091                    read them, unless we poll on a fixed interval we can't
1092                    use them
1093                  */
1094                 /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1095                 zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1096                 /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1097                 zd->iwstats.qual.updated = 2;
1098         }
1099
1100         return zd1201_getconfig(zd, ZD1201_RID_CURRENTBSSID, ap_addr->sa_data, 6);
1101 }
1102
1103 static int zd1201_set_scan(struct net_device *dev,
1104     struct iw_request_info *info, struct iw_point *srq, char *extra)
1105 {
1106         /* We do everything in get_scan */
1107         return 0;
1108 }
1109
1110 static int zd1201_get_scan(struct net_device *dev,
1111     struct iw_request_info *info, struct iw_point *srq, char *extra)
1112 {
1113         struct zd1201 *zd = netdev_priv(dev);
1114         int err, i, j, enabled_save;
1115         struct iw_event iwe;
1116         char *cev = extra;
1117         char *end_buf = extra + IW_SCAN_MAX_DATA;
1118
1119         /* No scanning in AP mode */
1120         if (zd->ap)
1121                 return -EOPNOTSUPP;
1122
1123         /* Scan doesn't seem to work if disabled */
1124         enabled_save = zd->mac_enabled;
1125         zd1201_enable(zd);
1126
1127         zd->rxdatas = 0;
1128         err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE,
1129              ZD1201_INQ_SCANRESULTS, 0, 0);
1130         if (err)
1131                 return err;
1132
1133         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1134         if (!zd->rxlen)
1135                 return -EIO;
1136
1137         if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1138                 return -EIO;
1139
1140         for(i=8; i<zd->rxlen; i+=62) {
1141                 iwe.cmd = SIOCGIWAP;
1142                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1143                 memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1144                 cev = iwe_stream_add_event(info, cev, end_buf,
1145                                            &iwe, IW_EV_ADDR_LEN);
1146
1147                 iwe.cmd = SIOCGIWESSID;
1148                 iwe.u.data.length = zd->rxdata[i+16];
1149                 iwe.u.data.flags = 1;
1150                 cev = iwe_stream_add_point(info, cev, end_buf,
1151                                            &iwe, zd->rxdata+i+18);
1152
1153                 iwe.cmd = SIOCGIWMODE;
1154                 if (zd->rxdata[i+14]&0x01)
1155                         iwe.u.mode = IW_MODE_MASTER;
1156                 else
1157                         iwe.u.mode = IW_MODE_ADHOC;
1158                 cev = iwe_stream_add_event(info, cev, end_buf,
1159                                            &iwe, IW_EV_UINT_LEN);
1160
1161                 iwe.cmd = SIOCGIWFREQ;
1162                 iwe.u.freq.m = zd->rxdata[i+0];
1163                 iwe.u.freq.e = 0;
1164                 cev = iwe_stream_add_event(info, cev, end_buf,
1165                                            &iwe, IW_EV_FREQ_LEN);
1166
1167                 iwe.cmd = SIOCGIWRATE;
1168                 iwe.u.bitrate.fixed = 0;
1169                 iwe.u.bitrate.disabled = 0;
1170                 for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
1171                         iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
1172                         cev = iwe_stream_add_event(info, cev, end_buf,
1173                                                    &iwe, IW_EV_PARAM_LEN);
1174                 }
1175
1176                 iwe.cmd = SIOCGIWENCODE;
1177                 iwe.u.data.length = 0;
1178                 if (zd->rxdata[i+14]&0x10)
1179                         iwe.u.data.flags = IW_ENCODE_ENABLED;
1180                 else
1181                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1182                 cev = iwe_stream_add_point(info, cev, end_buf, &iwe, NULL);
1183
1184                 iwe.cmd = IWEVQUAL;
1185                 iwe.u.qual.qual = zd->rxdata[i+4];
1186                 iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
1187                 iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
1188                 iwe.u.qual.updated = 7;
1189                 cev = iwe_stream_add_event(info, cev, end_buf,
1190                                            &iwe, IW_EV_QUAL_LEN);
1191         }
1192
1193         if (!enabled_save)
1194                 zd1201_disable(zd);
1195
1196         srq->length = cev - extra;
1197         srq->flags = 0;
1198
1199         return 0;
1200 }
1201
1202 static int zd1201_set_essid(struct net_device *dev,
1203     struct iw_request_info *info, struct iw_point *data, char *essid)
1204 {
1205         struct zd1201 *zd = netdev_priv(dev);
1206
1207         if (data->length > IW_ESSID_MAX_SIZE)
1208                 return -EINVAL;
1209         if (data->length < 1)
1210                 data->length = 1;
1211         zd->essidlen = data->length;
1212         memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1213         memcpy(zd->essid, essid, data->length);
1214         return zd1201_join(zd, zd->essid, zd->essidlen);
1215 }
1216
1217 static int zd1201_get_essid(struct net_device *dev,
1218     struct iw_request_info *info, struct iw_point *data, char *essid)
1219 {
1220         struct zd1201 *zd = netdev_priv(dev);
1221
1222         memcpy(essid, zd->essid, zd->essidlen);
1223         data->flags = 1;
1224         data->length = zd->essidlen;
1225
1226         return 0;
1227 }
1228
1229 static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1230     struct iw_point *data, char *nick)
1231 {
1232         strcpy(nick, "zd1201");
1233         data->flags = 1;
1234         data->length = strlen(nick);
1235         return 0;
1236 }
1237
1238 static int zd1201_set_rate(struct net_device *dev,
1239     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1240 {
1241         struct zd1201 *zd = netdev_priv(dev);
1242         short rate;
1243         int err;
1244
1245         switch (rrq->value) {
1246                 case 1000000:
1247                         rate = ZD1201_RATEB1;
1248                         break;
1249                 case 2000000:
1250                         rate = ZD1201_RATEB2;
1251                         break;
1252                 case 5500000:
1253                         rate = ZD1201_RATEB5;
1254                         break;
1255                 case 11000000:
1256                 default:
1257                         rate = ZD1201_RATEB11;
1258                         break;
1259         }
1260         if (!rrq->fixed) { /* Also enable all lower bitrates */
1261                 rate |= rate-1;
1262         }
1263
1264         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1265         if (err)
1266                 return err;
1267
1268         return zd1201_mac_reset(zd);
1269 }
1270
1271 static int zd1201_get_rate(struct net_device *dev,
1272     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1273 {
1274         struct zd1201 *zd = netdev_priv(dev);
1275         short rate;
1276         int err;
1277
1278         err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1279         if (err)
1280                 return err;
1281
1282         switch(rate) {
1283                 case 1:
1284                         rrq->value = 1000000;
1285                         break;
1286                 case 2:
1287                         rrq->value = 2000000;
1288                         break;
1289                 case 5:
1290                         rrq->value = 5500000;
1291                         break;
1292                 case 11:
1293                         rrq->value = 11000000;
1294                         break;
1295                 default:
1296                         rrq->value = 0;
1297         }
1298         rrq->fixed = 0;
1299         rrq->disabled = 0;
1300
1301         return 0;
1302 }
1303
1304 static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1305     struct iw_param *rts, char *extra)
1306 {
1307         struct zd1201 *zd = netdev_priv(dev);
1308         int err;
1309         short val = rts->value;
1310
1311         if (rts->disabled || !rts->fixed)
1312                 val = ZD1201_RTSMAX;
1313         if (val > ZD1201_RTSMAX)
1314                 return -EINVAL;
1315         if (val < 0)
1316                 return -EINVAL;
1317
1318         err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1319         if (err)
1320                 return err;
1321         return zd1201_mac_reset(zd);
1322 }
1323
1324 static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1325     struct iw_param *rts, char *extra)
1326 {
1327         struct zd1201 *zd = netdev_priv(dev);
1328         short rtst;
1329         int err;
1330
1331         err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1332         if (err)
1333                 return err;
1334         rts->value = rtst;
1335         rts->disabled = (rts->value == ZD1201_RTSMAX);
1336         rts->fixed = 1;
1337
1338         return 0;
1339 }
1340
1341 static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1342     struct iw_param *frag, char *extra)
1343 {
1344         struct zd1201 *zd = netdev_priv(dev);
1345         int err;
1346         short val = frag->value;
1347
1348         if (frag->disabled || !frag->fixed)
1349                 val = ZD1201_FRAGMAX;
1350         if (val > ZD1201_FRAGMAX)
1351                 return -EINVAL;
1352         if (val < ZD1201_FRAGMIN)
1353                 return -EINVAL;
1354         if (val & 1)
1355                 return -EINVAL;
1356         err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1357         if (err)
1358                 return err;
1359         return zd1201_mac_reset(zd);
1360 }
1361
1362 static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1363     struct iw_param *frag, char *extra)
1364 {
1365         struct zd1201 *zd = netdev_priv(dev);
1366         short fragt;
1367         int err;
1368
1369         err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1370         if (err)
1371                 return err;
1372         frag->value = fragt;
1373         frag->disabled = (frag->value == ZD1201_FRAGMAX);
1374         frag->fixed = 1;
1375
1376         return 0;
1377 }
1378
1379 static int zd1201_set_retry(struct net_device *dev,
1380     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1381 {
1382         return 0;
1383 }
1384
1385 static int zd1201_get_retry(struct net_device *dev,
1386     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1387 {
1388         return 0;
1389 }
1390
1391 static int zd1201_set_encode(struct net_device *dev,
1392     struct iw_request_info *info, struct iw_point *erq, char *key)
1393 {
1394         struct zd1201 *zd = netdev_priv(dev);
1395         short i;
1396         int err, rid;
1397
1398         if (erq->length > ZD1201_MAXKEYLEN)
1399                 return -EINVAL;
1400
1401         i = (erq->flags & IW_ENCODE_INDEX)-1;
1402         if (i == -1) {
1403                 err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1404                 if (err)
1405                         return err;
1406         } else {
1407                 err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1408                 if (err)
1409                         return err;
1410         }
1411
1412         if (i < 0 || i >= ZD1201_NUMKEYS)
1413                 return -EINVAL;
1414
1415         rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1416         err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1417         if (err)
1418                 return err;
1419         zd->encode_keylen[i] = erq->length;
1420         memcpy(zd->encode_keys[i], key, erq->length);
1421
1422         i=0;
1423         if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1424                 i |= 0x01;
1425                 zd->encode_enabled = 1;
1426         } else
1427                 zd->encode_enabled = 0;
1428         if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1429                 i |= 0x02;
1430                 zd->encode_restricted = 1;
1431         } else
1432                 zd->encode_restricted = 0;
1433         err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1434         if (err)
1435                 return err;
1436
1437         if (zd->encode_enabled)
1438                 i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1439         else
1440                 i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1441         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1442         if (err)
1443                 return err;
1444
1445         return zd1201_mac_reset(zd);
1446 }
1447
1448 static int zd1201_get_encode(struct net_device *dev,
1449     struct iw_request_info *info, struct iw_point *erq, char *key)
1450 {
1451         struct zd1201 *zd = netdev_priv(dev);
1452         short i;
1453         int err;
1454
1455         if (zd->encode_enabled)
1456                 erq->flags = IW_ENCODE_ENABLED;
1457         else
1458                 erq->flags = IW_ENCODE_DISABLED;
1459         if (zd->encode_restricted)
1460                 erq->flags |= IW_ENCODE_RESTRICTED;
1461         else
1462                 erq->flags |= IW_ENCODE_OPEN;
1463
1464         i = (erq->flags & IW_ENCODE_INDEX) -1;
1465         if (i == -1) {
1466                 err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1467                 if (err)
1468                         return err;
1469         }
1470         if (i<0 || i>= ZD1201_NUMKEYS)
1471                 return -EINVAL;
1472
1473         erq->flags |= i+1;
1474
1475         erq->length = zd->encode_keylen[i];
1476         memcpy(key, zd->encode_keys[i], erq->length);
1477
1478         return 0;
1479 }
1480
1481 static int zd1201_set_power(struct net_device *dev,
1482     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1483 {
1484         struct zd1201 *zd = netdev_priv(dev);
1485         short enabled, duration, level;
1486         int err;
1487
1488         enabled = vwrq->disabled ? 0 : 1;
1489         if (enabled) {
1490                 if (vwrq->flags & IW_POWER_PERIOD) {
1491                         duration = vwrq->value;
1492                         err = zd1201_setconfig16(zd,
1493                             ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1494                         if (err)
1495                                 return err;
1496                         goto out;
1497                 }
1498                 if (vwrq->flags & IW_POWER_TIMEOUT) {
1499                         err = zd1201_getconfig16(zd,
1500                             ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1501                         if (err)
1502                                 return err;
1503                         level = vwrq->value * 4 / duration;
1504                         if (level > 4)
1505                                 level = 4;
1506                         if (level < 0)
1507                                 level = 0;
1508                         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1509                             level);
1510                         if (err)
1511                                 return err;
1512                         goto out;
1513                 }
1514                 return -EINVAL;
1515         }
1516 out:
1517         return zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1518 }
1519
1520 static int zd1201_get_power(struct net_device *dev,
1521     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1522 {
1523         struct zd1201 *zd = netdev_priv(dev);
1524         short enabled, level, duration;
1525         int err;
1526
1527         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1528         if (err)
1529                 return err;
1530         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1531         if (err)
1532                 return err;
1533         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1534         if (err)
1535                 return err;
1536         vwrq->disabled = enabled ? 0 : 1;
1537         if (vwrq->flags & IW_POWER_TYPE) {
1538                 if (vwrq->flags & IW_POWER_PERIOD) {
1539                         vwrq->value = duration;
1540                         vwrq->flags = IW_POWER_PERIOD;
1541                 } else {
1542                         vwrq->value = duration * level / 4;
1543                         vwrq->flags = IW_POWER_TIMEOUT;
1544                 }
1545         }
1546         if (vwrq->flags & IW_POWER_MODE) {
1547                 if (enabled && level)
1548                         vwrq->flags = IW_POWER_UNICAST_R;
1549                 else
1550                         vwrq->flags = IW_POWER_ALL_R;
1551         }
1552
1553         return 0;
1554 }
1555
1556
1557 static const iw_handler zd1201_iw_handler[] =
1558 {
1559         (iw_handler) zd1201_config_commit,      /* SIOCSIWCOMMIT */
1560         (iw_handler) zd1201_get_name,           /* SIOCGIWNAME */
1561         (iw_handler) NULL,                      /* SIOCSIWNWID */
1562         (iw_handler) NULL,                      /* SIOCGIWNWID */
1563         (iw_handler) zd1201_set_freq,           /* SIOCSIWFREQ */
1564         (iw_handler) zd1201_get_freq,           /* SIOCGIWFREQ */
1565         (iw_handler) zd1201_set_mode,           /* SIOCSIWMODE */
1566         (iw_handler) zd1201_get_mode,           /* SIOCGIWMODE */
1567         (iw_handler) NULL,                      /* SIOCSIWSENS */
1568         (iw_handler) NULL,                      /* SIOCGIWSENS */
1569         (iw_handler) NULL,                      /* SIOCSIWRANGE */
1570         (iw_handler) zd1201_get_range,           /* SIOCGIWRANGE */
1571         (iw_handler) NULL,                      /* SIOCSIWPRIV */
1572         (iw_handler) NULL,                      /* SIOCGIWPRIV */
1573         (iw_handler) NULL,                      /* SIOCSIWSTATS */
1574         (iw_handler) NULL,                      /* SIOCGIWSTATS */
1575         (iw_handler) NULL,                      /* SIOCSIWSPY */
1576         (iw_handler) NULL,                      /* SIOCGIWSPY */
1577         (iw_handler) NULL,                      /* -- hole -- */
1578         (iw_handler) NULL,                      /* -- hole -- */
1579         (iw_handler) NULL/*zd1201_set_wap*/,            /* SIOCSIWAP */
1580         (iw_handler) zd1201_get_wap,            /* SIOCGIWAP */
1581         (iw_handler) NULL,                      /* -- hole -- */
1582         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
1583         (iw_handler) zd1201_set_scan,           /* SIOCSIWSCAN */
1584         (iw_handler) zd1201_get_scan,           /* SIOCGIWSCAN */
1585         (iw_handler) zd1201_set_essid,          /* SIOCSIWESSID */
1586         (iw_handler) zd1201_get_essid,          /* SIOCGIWESSID */
1587         (iw_handler) NULL,                      /* SIOCSIWNICKN */
1588         (iw_handler) zd1201_get_nick,           /* SIOCGIWNICKN */
1589         (iw_handler) NULL,                      /* -- hole -- */
1590         (iw_handler) NULL,                      /* -- hole -- */
1591         (iw_handler) zd1201_set_rate,           /* SIOCSIWRATE */
1592         (iw_handler) zd1201_get_rate,           /* SIOCGIWRATE */
1593         (iw_handler) zd1201_set_rts,            /* SIOCSIWRTS */
1594         (iw_handler) zd1201_get_rts,            /* SIOCGIWRTS */
1595         (iw_handler) zd1201_set_frag,           /* SIOCSIWFRAG */
1596         (iw_handler) zd1201_get_frag,           /* SIOCGIWFRAG */
1597         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
1598         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
1599         (iw_handler) zd1201_set_retry,          /* SIOCSIWRETRY */
1600         (iw_handler) zd1201_get_retry,          /* SIOCGIWRETRY */
1601         (iw_handler) zd1201_set_encode,         /* SIOCSIWENCODE */
1602         (iw_handler) zd1201_get_encode,         /* SIOCGIWENCODE */
1603         (iw_handler) zd1201_set_power,          /* SIOCSIWPOWER */
1604         (iw_handler) zd1201_get_power,          /* SIOCGIWPOWER */
1605 };
1606
1607 static int zd1201_set_hostauth(struct net_device *dev,
1608     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1609 {
1610         struct zd1201 *zd = netdev_priv(dev);
1611
1612         if (!zd->ap)
1613                 return -EOPNOTSUPP;
1614
1615         return zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1616 }
1617
1618 static int zd1201_get_hostauth(struct net_device *dev,
1619     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1620 {
1621         struct zd1201 *zd = netdev_priv(dev);
1622         short hostauth;
1623         int err;
1624
1625         if (!zd->ap)
1626                 return -EOPNOTSUPP;
1627
1628         err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1629         if (err)
1630                 return err;
1631         rrq->value = hostauth;
1632         rrq->fixed = 1;
1633
1634         return 0;
1635 }
1636
1637 static int zd1201_auth_sta(struct net_device *dev,
1638     struct iw_request_info *info, struct sockaddr *sta, char *extra)
1639 {
1640         struct zd1201 *zd = netdev_priv(dev);
1641         unsigned char buffer[10];
1642
1643         if (!zd->ap)
1644                 return -EOPNOTSUPP;
1645
1646         memcpy(buffer, sta->sa_data, ETH_ALEN);
1647         *(short*)(buffer+6) = 0;        /* 0==success, 1==failure */
1648         *(short*)(buffer+8) = 0;
1649
1650         return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1651 }
1652
1653 static int zd1201_set_maxassoc(struct net_device *dev,
1654     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1655 {
1656         struct zd1201 *zd = netdev_priv(dev);
1657         int err;
1658
1659         if (!zd->ap)
1660                 return -EOPNOTSUPP;
1661
1662         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1663         if (err)
1664                 return err;
1665         return 0;
1666 }
1667
1668 static int zd1201_get_maxassoc(struct net_device *dev,
1669     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1670 {
1671         struct zd1201 *zd = netdev_priv(dev);
1672         short maxassoc;
1673         int err;
1674
1675         if (!zd->ap)
1676                 return -EOPNOTSUPP;
1677
1678         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1679         if (err)
1680                 return err;
1681         rrq->value = maxassoc;
1682         rrq->fixed = 1;
1683
1684         return 0;
1685 }
1686
1687 static const iw_handler zd1201_private_handler[] = {
1688         (iw_handler) zd1201_set_hostauth,       /* ZD1201SIWHOSTAUTH */
1689         (iw_handler) zd1201_get_hostauth,       /* ZD1201GIWHOSTAUTH */
1690         (iw_handler) zd1201_auth_sta,           /* ZD1201SIWAUTHSTA */
1691         (iw_handler) NULL,                      /* nothing to get */
1692         (iw_handler) zd1201_set_maxassoc,       /* ZD1201SIMAXASSOC */
1693         (iw_handler) zd1201_get_maxassoc,       /* ZD1201GIMAXASSOC */
1694 };
1695
1696 static const struct iw_priv_args zd1201_private_args[] = {
1697         { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1698             IW_PRIV_TYPE_NONE, "sethostauth" },
1699         { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1700             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1701         { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1702             IW_PRIV_TYPE_NONE, "authstation" },
1703         { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1704             IW_PRIV_TYPE_NONE, "setmaxassoc" },
1705         { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1706             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1707 };
1708
1709 static const struct iw_handler_def zd1201_iw_handlers = {
1710         .num_standard           = ARRAY_SIZE(zd1201_iw_handler),
1711         .num_private            = ARRAY_SIZE(zd1201_private_handler),
1712         .num_private_args       = ARRAY_SIZE(zd1201_private_args),
1713         .standard               = (iw_handler *)zd1201_iw_handler,
1714         .private                = (iw_handler *)zd1201_private_handler,
1715         .private_args           = (struct iw_priv_args *) zd1201_private_args,
1716         .get_wireless_stats     = zd1201_get_wireless_stats,
1717 };
1718
1719 static const struct net_device_ops zd1201_netdev_ops = {
1720         .ndo_open               = zd1201_net_open,
1721         .ndo_stop               = zd1201_net_stop,
1722         .ndo_start_xmit         = zd1201_hard_start_xmit,
1723         .ndo_tx_timeout         = zd1201_tx_timeout,
1724         .ndo_set_rx_mode        = zd1201_set_multicast,
1725         .ndo_set_mac_address    = zd1201_set_mac_address,
1726         .ndo_change_mtu         = eth_change_mtu,
1727         .ndo_validate_addr      = eth_validate_addr,
1728 };
1729
1730 static int zd1201_probe(struct usb_interface *interface,
1731                         const struct usb_device_id *id)
1732 {
1733         struct zd1201 *zd;
1734         struct net_device *dev;
1735         struct usb_device *usb;
1736         int err;
1737         short porttype;
1738         char buf[IW_ESSID_MAX_SIZE+2];
1739
1740         usb = interface_to_usbdev(interface);
1741
1742         dev = alloc_etherdev(sizeof(*zd));
1743         if (!dev)
1744                 return -ENOMEM;
1745         zd = netdev_priv(dev);
1746         zd->dev = dev;
1747
1748         zd->ap = ap;
1749         zd->usb = usb;
1750         zd->removed = 0;
1751         init_waitqueue_head(&zd->rxdataq);
1752         INIT_HLIST_HEAD(&zd->fraglist);
1753
1754         err = zd1201_fw_upload(usb, zd->ap);
1755         if (err) {
1756                 dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
1757                 goto err_zd;
1758         }
1759
1760         zd->endp_in = 1;
1761         zd->endp_out = 1;
1762         zd->endp_out2 = 2;
1763         zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1764         zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1765         if (!zd->rx_urb || !zd->tx_urb) {
1766                 err = -ENOMEM;
1767                 goto err_zd;
1768         }
1769
1770         mdelay(100);
1771         err = zd1201_drvr_start(zd);
1772         if (err)
1773                 goto err_zd;
1774
1775         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
1776         if (err)
1777                 goto err_start;
1778
1779         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
1780             ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
1781         if (err)
1782                 goto err_start;
1783
1784         dev->netdev_ops = &zd1201_netdev_ops;
1785         dev->wireless_handlers = &zd1201_iw_handlers;
1786         dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
1787         strcpy(dev->name, "wlan%d");
1788
1789         err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR,
1790             dev->dev_addr, dev->addr_len);
1791         if (err)
1792                 goto err_start;
1793
1794         /* Set wildcard essid to match zd->essid */
1795         *(__le16 *)buf = cpu_to_le16(0);
1796         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
1797             IW_ESSID_MAX_SIZE+2, 1);
1798         if (err)
1799                 goto err_start;
1800
1801         if (zd->ap)
1802                 porttype = ZD1201_PORTTYPE_AP;
1803         else
1804                 porttype = ZD1201_PORTTYPE_BSS;
1805         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1806         if (err)
1807                 goto err_start;
1808
1809         SET_NETDEV_DEV(dev, &usb->dev);
1810
1811         err = register_netdev(dev);
1812         if (err)
1813                 goto err_start;
1814         dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
1815             dev->name);
1816
1817         usb_set_intfdata(interface, zd);
1818         zd1201_enable(zd);      /* zd1201 likes to startup enabled, */
1819         zd1201_disable(zd);     /* interfering with all the wifis in range */
1820         return 0;
1821
1822 err_start:
1823         /* Leave the device in reset state */
1824         zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
1825 err_zd:
1826         usb_free_urb(zd->tx_urb);
1827         usb_free_urb(zd->rx_urb);
1828         free_netdev(dev);
1829         return err;
1830 }
1831
1832 static void zd1201_disconnect(struct usb_interface *interface)
1833 {
1834         struct zd1201 *zd = usb_get_intfdata(interface);
1835         struct hlist_node *node2;
1836         struct zd1201_frag *frag;
1837
1838         if (!zd)
1839                 return;
1840         usb_set_intfdata(interface, NULL);
1841
1842         hlist_for_each_entry_safe(frag, node2, &zd->fraglist, fnode) {
1843                 hlist_del_init(&frag->fnode);
1844                 kfree_skb(frag->skb);
1845                 kfree(frag);
1846         }
1847
1848         if (zd->tx_urb) {
1849                 usb_kill_urb(zd->tx_urb);
1850                 usb_free_urb(zd->tx_urb);
1851         }
1852         if (zd->rx_urb) {
1853                 usb_kill_urb(zd->rx_urb);
1854                 usb_free_urb(zd->rx_urb);
1855         }
1856
1857         if (zd->dev) {
1858                 unregister_netdev(zd->dev);
1859                 free_netdev(zd->dev);
1860         }
1861 }
1862
1863 #ifdef CONFIG_PM
1864
1865 static int zd1201_suspend(struct usb_interface *interface,
1866                            pm_message_t message)
1867 {
1868         struct zd1201 *zd = usb_get_intfdata(interface);
1869
1870         netif_device_detach(zd->dev);
1871
1872         zd->was_enabled = zd->mac_enabled;
1873
1874         if (zd->was_enabled)
1875                 return zd1201_disable(zd);
1876         else
1877                 return 0;
1878 }
1879
1880 static int zd1201_resume(struct usb_interface *interface)
1881 {
1882         struct zd1201 *zd = usb_get_intfdata(interface);
1883
1884         if (!zd || !zd->dev)
1885                 return -ENODEV;
1886
1887         netif_device_attach(zd->dev);
1888
1889         if (zd->was_enabled)
1890                 return zd1201_enable(zd);
1891         else
1892                 return 0;
1893 }
1894
1895 #else
1896
1897 #define zd1201_suspend NULL
1898 #define zd1201_resume  NULL
1899
1900 #endif
1901
1902 static struct usb_driver zd1201_usb = {
1903         .name = "zd1201",
1904         .probe = zd1201_probe,
1905         .disconnect = zd1201_disconnect,
1906         .id_table = zd1201_table,
1907         .suspend = zd1201_suspend,
1908         .resume = zd1201_resume,
1909         .disable_hub_initiated_lpm = 1,
1910 };
1911
1912 module_usb_driver(zd1201_usb);