drivers/usb/net/zd1201.c

   1 /*
   2  *      Driver for ZyDAS zd1201 based wireless USB devices.
   3  *
   4  *      Copyright (c) 2004, 2005 Jeroen Vreeken (pe1rxq@amsat.org)
   5  *
   6  *      This program is free software; you can redistribute it and/or
   7  *      modify it under the terms of the GNU General Public License
   8  *      version 2 as published by the Free Software Foundation.
   9  *
  10  *      Parts of this driver have been derived from a wlan-ng version
  11  *      modified by ZyDAS. They also made documentation available, thanks!
  12  *      Copyright (C) 1999 AbsoluteValue Systems, Inc.  All Rights Reserved.
  13  */
  14
  15 #include <linux/module.h>
  16 #include <linux/usb.h>
  17 #include <linux/netdevice.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/wireless.h>
  20 #include <net/iw_handler.h>
  21 #include <linux/string.h>
  22 #include <linux/if_arp.h>
  23 #include <linux/firmware.h>
  24 #include <net/ieee80211.h>
  25 #include "zd1201.h"
  26
  27 static struct usb_device_id zd1201_table[] = {
  28         {USB_DEVICE(0x0586, 0x3400)}, /* Peabird Wireless USB Adapter */
  29         {USB_DEVICE(0x0ace, 0x1201)}, /* ZyDAS ZD1201 Wireless USB Adapter */
  30         {USB_DEVICE(0x050d, 0x6051)}, /* Belkin F5D6051 usb  adapter */
  31         {USB_DEVICE(0x0db0, 0x6823)}, /* MSI UB11B usb  adapter */
  32         {USB_DEVICE(0x1044, 0x8005)}, /* GIGABYTE GN-WLBZ201 usb adapter */
  33         {}
  34 };
  35
  36 static int ap = 0;      /* Are we an AP or a normal station? */
  37
  38 #define ZD1201_VERSION  "0.15"
  39
  40 MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>");
  41 MODULE_DESCRIPTION("Driver for ZyDAS ZD1201 based USB Wireless adapters");
  42 MODULE_VERSION(ZD1201_VERSION);
  43 MODULE_LICENSE("GPL");
  44 module_param(ap, int, 0);
  45 MODULE_PARM_DESC(ap, "If non-zero Access Point firmware will be loaded");
  46 MODULE_DEVICE_TABLE(usb, zd1201_table);
  47
  48
  49 static int zd1201_fw_upload(struct usb_device *dev, int apfw)
  50 {
  51         const struct firmware *fw_entry;
  52         char* data;
  53         unsigned long len;
  54         int err;
  55         unsigned char ret;
  56         char *buf;
  57         char *fwfile;
  58
  59         if (apfw)
  60                 fwfile = "zd1201-ap.fw";
  61         else
  62                 fwfile = "zd1201.fw";
  63
  64         err = request_firmware(&fw_entry, fwfile, &dev->dev);
  65         if (err) {
  66                 dev_err(&dev->dev, "Failed to load %s firmware file!\n", fwfile);
  67                 dev_err(&dev->dev, "Make sure the hotplug firmware loader is installed.\n");
  68                 dev_err(&dev->dev, "Goto http://linux-lc100020.sourceforge.net for more info\n");
  69                 return err;
  70         }
  71
  72         data = fw_entry->data;
  73         len = fw_entry->size;
  74
  75         buf = kmalloc(1024, GFP_ATOMIC);
  76         if (!buf)
  77                 goto exit;
  78
  79         while (len > 0) {
  80                 int translen = (len > 1024) ? 1024 : len;
  81                 memcpy(buf, data, translen);
  82
  83                 err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0,
  84                     USB_DIR_OUT | 0x40, 0, 0, buf, translen,
  85                     ZD1201_FW_TIMEOUT);
  86                 if (err < 0)
  87                         goto exit;
  88
  89                 len -= translen;
  90                 data += translen;
  91         }
  92
  93         err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0x2,
  94             USB_DIR_OUT | 0x40, 0, 0, NULL, 0, ZD1201_FW_TIMEOUT);
  95         if (err < 0)
  96                 goto exit;
  97
  98         err = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 0x4,
  99             USB_DIR_IN | 0x40, 0,0, &ret, sizeof(ret), ZD1201_FW_TIMEOUT);
 100         if (err < 0)
 101                 goto exit;
 102
 103         if (ret & 0x80) {
 104                 err = -EIO;
 105                 goto exit;
 106         }
 107
 108         err = 0;
 109 exit:
 110         kfree(buf);
 111         release_firmware(fw_entry);
 112         return err;
 113 }
 114
 115 static void zd1201_usbfree(struct urb *urb, struct pt_regs *regs)
 116 {
 117         struct zd1201 *zd = urb->context;
 118
 119         switch(urb->status) {
 120                 case -EILSEQ:
 121                 case -ENODEV:
 122                 case -ETIMEDOUT:
 123                 case -ENOENT:
 124                 case -EPIPE:
 125                 case -EOVERFLOW:
 126                 case -ESHUTDOWN:
 127                         dev_warn(&zd->usb->dev, "%s: urb failed: %d\n",
 128                             zd->dev->name, urb->status);
 129         }
 130
 131         kfree(urb->transfer_buffer);
 132         usb_free_urb(urb);
 133         return;
 134 }
 135
 136 /* cmdreq message:
 137         u32 type
 138         u16 cmd
 139         u16 parm0
 140         u16 parm1
 141         u16 parm2
 142         u8  pad[4]
 143
 144         total: 4 + 2 + 2 + 2 + 2 + 4 = 16
 145 */
 146 static int zd1201_docmd(struct zd1201 *zd, int cmd, int parm0,
 147                         int parm1, int parm2)
 148 {
 149         unsigned char *command;
 150         int ret;
 151         struct urb *urb;
 152
 153         command = kmalloc(16, GFP_ATOMIC);
 154         if (!command)
 155                 return -ENOMEM;
 156
 157         *((__le32*)command) = cpu_to_le32(ZD1201_USB_CMDREQ);
 158         *((__le16*)&command[4]) = cpu_to_le16(cmd);
 159         *((__le16*)&command[6]) = cpu_to_le16(parm0);
 160         *((__le16*)&command[8]) = cpu_to_le16(parm1);
 161         *((__le16*)&command[10])= cpu_to_le16(parm2);
 162
 163         urb = usb_alloc_urb(0, GFP_ATOMIC);
 164         if (!urb) {
 165                 kfree(command);
 166                 return -ENOMEM;
 167         }
 168         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 169              command, 16, zd1201_usbfree, zd);
 170         ret = usb_submit_urb(urb, GFP_ATOMIC);
 171         if (ret) {
 172                 kfree(command);
 173                 usb_free_urb(urb);
 174         }
 175
 176         return ret;
 177 }
 178
 179 /* Callback after sending out a packet */
 180 static void zd1201_usbtx(struct urb *urb, struct pt_regs *regs)
 181 {
 182         struct zd1201 *zd = urb->context;
 183         netif_wake_queue(zd->dev);
 184         return;
 185 }
 186
 187 /* Incoming data */
 188 static void zd1201_usbrx(struct urb *urb, struct pt_regs *regs)
 189 {
 190         struct zd1201 *zd = urb->context;
 191         int free = 0;
 192         unsigned char *data = urb->transfer_buffer;
 193         struct sk_buff *skb;
 194         unsigned char type;
 195
 196         if (!zd) {
 197                 free = 1;
 198                 goto exit;
 199         }
 200
 201         switch(urb->status) {
 202                 case -EILSEQ:
 203                 case -ENODEV:
 204                 case -ETIMEDOUT:
 205                 case -ENOENT:
 206                 case -EPIPE:
 207                 case -EOVERFLOW:
 208                 case -ESHUTDOWN:
 209                         dev_warn(&zd->usb->dev, "%s: rx urb failed: %d\n",
 210                             zd->dev->name, urb->status);
 211                         free = 1;
 212                         goto exit;
 213         }
 214
 215         if (urb->status != 0 || urb->actual_length == 0)
 216                 goto resubmit;
 217
 218         type = data[0];
 219         if (type == ZD1201_PACKET_EVENTSTAT || type == ZD1201_PACKET_RESOURCE) {
 220                 memcpy(zd->rxdata, data, urb->actual_length);
 221                 zd->rxlen = urb->actual_length;
 222                 zd->rxdatas = 1;
 223                 wake_up(&zd->rxdataq);
 224         }
 225         /* Info frame */
 226         if (type == ZD1201_PACKET_INQUIRE) {
 227                 int i = 0;
 228                 unsigned short infotype, framelen, copylen;
 229                 framelen = le16_to_cpu(*(__le16*)&data[4]);
 230                 infotype = le16_to_cpu(*(__le16*)&data[6]);
 231
 232                 if (infotype == ZD1201_INF_LINKSTATUS) {
 233                         short linkstatus;
 234
 235                         linkstatus = le16_to_cpu(*(__le16*)&data[8]);
 236                         switch(linkstatus) {
 237                                 case 1:
 238                                         netif_carrier_on(zd->dev);
 239                                         break;
 240                                 case 2:
 241                                         netif_carrier_off(zd->dev);
 242                                         break;
 243                                 case 3:
 244                                         netif_carrier_off(zd->dev);
 245                                         break;
 246                                 case 4:
 247                                         netif_carrier_on(zd->dev);
 248                                         break;
 249                                 default:
 250                                         netif_carrier_off(zd->dev);
 251                         }
 252                         goto resubmit;
 253                 }
 254                 if (infotype == ZD1201_INF_ASSOCSTATUS) {
 255                         short status = le16_to_cpu(*(__le16*)(data+8));
 256                         int event;
 257                         union iwreq_data wrqu;
 258
 259                         switch (status) {
 260                                 case ZD1201_ASSOCSTATUS_STAASSOC:
 261                                 case ZD1201_ASSOCSTATUS_REASSOC:
 262                                         event = IWEVREGISTERED;
 263                                         break;
 264                                 case ZD1201_ASSOCSTATUS_DISASSOC:
 265                                 case ZD1201_ASSOCSTATUS_ASSOCFAIL:
 266                                 case ZD1201_ASSOCSTATUS_AUTHFAIL:
 267                                 default:
 268                                         event = IWEVEXPIRED;
 269                         }
 270                         memcpy(wrqu.addr.sa_data, data+10, ETH_ALEN);
 271                         wrqu.addr.sa_family = ARPHRD_ETHER;
 272
 273                         /* Send event to user space */
 274                         wireless_send_event(zd->dev, event, &wrqu, NULL);
 275
 276                         goto resubmit;
 277                 }
 278                 if (infotype == ZD1201_INF_AUTHREQ) {
 279                         union iwreq_data wrqu;
 280
 281                         memcpy(wrqu.addr.sa_data, data+8, ETH_ALEN);
 282                         wrqu.addr.sa_family = ARPHRD_ETHER;
 283                         /* There isn't a event that trully fits this request.
 284                            We assume that userspace will be smart enough to
 285                            see a new station being expired and sends back a
 286                            authstation ioctl to authorize it. */
 287                         wireless_send_event(zd->dev, IWEVEXPIRED, &wrqu, NULL);
 288                         goto resubmit;
 289                 }
 290                 /* Other infotypes are handled outside this handler */
 291                 zd->rxlen = 0;
 292                 while (i < urb->actual_length) {
 293                         copylen = le16_to_cpu(*(__le16*)&data[i+2]);
 294                         /* Sanity check, sometimes we get junk */
 295                         if (copylen+zd->rxlen > sizeof(zd->rxdata))
 296                                 break;
 297                         memcpy(zd->rxdata+zd->rxlen, data+i+4, copylen);
 298                         zd->rxlen += copylen;
 299                         i += 64;
 300                 }
 301                 if (i >= urb->actual_length) {
 302                         zd->rxdatas = 1;
 303                         wake_up(&zd->rxdataq);
 304                 }
 305                 goto  resubmit;
 306         }
 307         /* Actual data */
 308         if (data[urb->actual_length-1] == ZD1201_PACKET_RXDATA) {
 309                 int datalen = urb->actual_length-1;
 310                 unsigned short len, fc, seq;
 311                 struct hlist_node *node;
 312
 313                 len = ntohs(*(__be16 *)&data[datalen-2]);
 314                 if (len>datalen)
 315                         len=datalen;
 316                 fc = le16_to_cpu(*(__le16 *)&data[datalen-16]);
 317                 seq = le16_to_cpu(*(__le16 *)&data[datalen-24]);
 318
 319                 if(zd->monitor) {
 320                         if (datalen < 24)
 321                                 goto resubmit;
 322                         if (!(skb = dev_alloc_skb(datalen+24)))
 323                                 goto resubmit;
 324
 325                         memcpy(skb_put(skb, 2), &data[datalen-16], 2);
 326                         memcpy(skb_put(skb, 2), &data[datalen-2], 2);
 327                         memcpy(skb_put(skb, 6), &data[datalen-14], 6);
 328                         memcpy(skb_put(skb, 6), &data[datalen-22], 6);
 329                         memcpy(skb_put(skb, 6), &data[datalen-8], 6);
 330                         memcpy(skb_put(skb, 2), &data[datalen-24], 2);
 331                         memcpy(skb_put(skb, len), data, len);
 332                         skb->dev = zd->dev;
 333                         skb->dev->last_rx = jiffies;
 334                         skb->protocol = eth_type_trans(skb, zd->dev);
 335                         zd->stats.rx_packets++;
 336                         zd->stats.rx_bytes += skb->len;
 337                         netif_rx(skb);
 338                         goto resubmit;
 339                 }
 340
 341                 if ((seq & IEEE80211_SCTL_FRAG) ||
 342                     (fc & IEEE80211_FCTL_MOREFRAGS)) {
 343                         struct zd1201_frag *frag = NULL;
 344                         char *ptr;
 345
 346                         if (datalen<14)
 347                                 goto resubmit;
 348                         if ((seq & IEEE80211_SCTL_FRAG) == 0) {
 349                                 frag = kmalloc(sizeof(*frag), GFP_ATOMIC);
 350                                 if (!frag)
 351                                         goto resubmit;
 352                                 skb = dev_alloc_skb(IEEE80211_DATA_LEN +14+2);
 353                                 if (!skb) {
 354                                         kfree(frag);
 355                                         goto resubmit;
 356                                 }
 357                                 frag->skb = skb;
 358                                 frag->seq = seq & IEEE80211_SCTL_SEQ;
 359                                 skb_reserve(skb, 2);
 360                                 memcpy(skb_put(skb, 12), &data[datalen-14], 12);
 361                                 memcpy(skb_put(skb, 2), &data[6], 2);
 362                                 memcpy(skb_put(skb, len), data+8, len);
 363                                 hlist_add_head(&frag->fnode, &zd->fraglist);
 364                                 goto resubmit;
 365                         }
 366                         hlist_for_each_entry(frag, node, &zd->fraglist, fnode)
 367                                 if(frag->seq == (seq&IEEE80211_SCTL_SEQ))
 368                                         break;
 369                         if (!frag)
 370                                 goto resubmit;
 371                         skb = frag->skb;
 372                         ptr = skb_put(skb, len);
 373                         if (ptr)
 374                                 memcpy(ptr, data+8, len);
 375                         if (fc & IEEE80211_FCTL_MOREFRAGS)
 376                                 goto resubmit;
 377                         hlist_del_init(&frag->fnode);
 378                         kfree(frag);
 379                         /* Fallthrough */
 380                 } else {
 381                         if (datalen<14)
 382                                 goto resubmit;
 383                         skb = dev_alloc_skb(len + 14 + 2);
 384                         if (!skb)
 385                                 goto resubmit;
 386                         skb_reserve(skb, 2);
 387                         memcpy(skb_put(skb, 12), &data[datalen-14], 12);
 388                         memcpy(skb_put(skb, 2), &data[6], 2);
 389                         memcpy(skb_put(skb, len), data+8, len);
 390                 }
 391                 skb->dev = zd->dev;
 392                 skb->dev->last_rx = jiffies;
 393                 skb->protocol = eth_type_trans(skb, zd->dev);
 394                 zd->stats.rx_packets++;
 395                 zd->stats.rx_bytes += skb->len;
 396                 netif_rx(skb);
 397         }
 398 resubmit:
 399         memset(data, 0, ZD1201_RXSIZE);
 400
 401         urb->status = 0;
 402         urb->dev = zd->usb;
 403         if(usb_submit_urb(urb, GFP_ATOMIC))
 404                 free = 1;
 405
 406 exit:
 407         if (free) {
 408                 zd->rxlen = 0;
 409                 zd->rxdatas = 1;
 410                 wake_up(&zd->rxdataq);
 411                 kfree(urb->transfer_buffer);
 412         }
 413         return;
 414 }
 415
 416 static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
 417         unsigned int riddatalen)
 418 {
 419         int err;
 420         int i = 0;
 421         int code;
 422         int rid_fid;
 423         int length;
 424         unsigned char *pdata;
 425
 426         zd->rxdatas = 0;
 427         err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
 428         if (err)
 429                 return err;
 430
 431         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 432         if (!zd->rxlen)
 433                 return -EIO;
 434
 435         code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
 436         rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
 437         length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
 438         if (length > zd->rxlen)
 439                 length = zd->rxlen-6;
 440
 441         /* If access bit is not on, then error */
 442         if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
 443                 return -EINVAL;
 444
 445         /* Not enough buffer for allocating data */
 446         if (riddatalen != (length - 4)) {
 447                 dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
 448                     riddatalen, zd->rxlen, length, rid, rid_fid);
 449                 return -ENODATA;
 450         }
 451
 452         zd->rxdatas = 0;
 453         /* Issue SetRxRid commnd */
 454         err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
 455         if (err)
 456                 return err;
 457
 458         /* Receive RID record from resource packets */
 459         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 460         if (!zd->rxlen)
 461                 return -EIO;
 462
 463         if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
 464                 dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
 465                     zd->rxdata[zd->rxlen-1]);
 466                 return -EINVAL;
 467         }
 468
 469         /* Set the data pointer and received data length */
 470         pdata = zd->rxdata;
 471         length = zd->rxlen;
 472
 473         do {
 474                 int  actual_length;
 475
 476                 actual_length = (length > 64) ? 64 : length;
 477
 478                 if(pdata[0] != 0x3) {
 479                         dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
 480                             pdata[0]);
 481                         return -EINVAL;
 482                 }
 483
 484                 if (actual_length != 64) {
 485                         /* Trim the last packet type byte */
 486                         actual_length--;
 487                 }
 488
 489                 /* Skip the 4 bytes header (RID length and RID) */
 490                 if(i == 0) {
 491                         pdata += 8;
 492                         actual_length -= 8;
 493                 }
 494                 else {
 495                         pdata += 4;
 496                         actual_length -= 4;
 497                 }
 498
 499                 memcpy(riddata, pdata, actual_length);
 500                 riddata += actual_length;
 501                 pdata += actual_length;
 502                 length -= 64;
 503                 i++;
 504         } while (length > 0);
 505
 506         return 0;
 507 }
 508
 509 /*
 510  *      resreq:
 511  *              byte    type
 512  *              byte    sequence
 513  *              u16     reserved
 514  *              byte    data[12]
 515  *      total: 16
 516  */
 517 static int zd1201_setconfig(struct zd1201 *zd, int rid, void *buf, int len, int wait)
 518 {
 519         int err;
 520         unsigned char *request;
 521         int reqlen;
 522         char seq=0;
 523         struct urb *urb;
 524         gfp_t gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
 525
 526         len += 4;                       /* first 4 are for header */
 527
 528         zd->rxdatas = 0;
 529         zd->rxlen = 0;
 530         for (seq=0; len > 0; seq++) {
 531                 request = kmalloc(16, gfp_mask);
 532                 if (!request)
 533                         return -ENOMEM;
 534                 urb = usb_alloc_urb(0, gfp_mask);
 535                 if (!urb) {
 536                         kfree(request);
 537                         return -ENOMEM;
 538                 }
 539                 memset(request, 0, 16);
 540                 reqlen = len>12 ? 12 : len;
 541                 request[0] = ZD1201_USB_RESREQ;
 542                 request[1] = seq;
 543                 request[2] = 0;
 544                 request[3] = 0;
 545                 if (request[1] == 0) {
 546                         /* add header */
 547                         *(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
 548                         *(__le16*)&request[6] = cpu_to_le16(rid);
 549                         memcpy(request+8, buf, reqlen-4);
 550                         buf += reqlen-4;
 551                 } else {
 552                         memcpy(request+4, buf, reqlen);
 553                         buf += reqlen;
 554                 }
 555
 556                 len -= reqlen;
 557
 558                 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
 559                     zd->endp_out2), request, 16, zd1201_usbfree, zd);
 560                 err = usb_submit_urb(urb, gfp_mask);
 561                 if (err)
 562                         goto err;
 563         }
 564
 565         request = kmalloc(16, gfp_mask);
 566         if (!request)
 567                 return -ENOMEM;
 568         urb = usb_alloc_urb(0, gfp_mask);
 569         if (!urb) {
 570                 kfree(request);
 571                 return -ENOMEM;
 572         }
 573         *((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
 574         *((__le16*)&request[4]) =
 575             cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
 576         *((__le16*)&request[6]) = cpu_to_le16(rid);
 577         *((__le16*)&request[8]) = cpu_to_le16(0);
 578         *((__le16*)&request[10]) = cpu_to_le16(0);
 579         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 580              request, 16, zd1201_usbfree, zd);
 581         err = usb_submit_urb(urb, gfp_mask);
 582         if (err)
 583                 goto err;
 584
 585         if (wait) {
 586                 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 587                 if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
 588                         dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
 589                 }
 590         }
 591
 592         return 0;
 593 err:
 594         kfree(request);
 595         usb_free_urb(urb);
 596         return err;
 597 }
 598
 599 static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
 600 {
 601         int err;
 602         __le16 zdval;
 603
 604         err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
 605         if (err)
 606                 return err;
 607         *val = le16_to_cpu(zdval);
 608         return 0;
 609 }
 610
 611 static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
 612 {
 613         __le16 zdval = cpu_to_le16(val);
 614         return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
 615 }
 616
 617 static int zd1201_drvr_start(struct zd1201 *zd)
 618 {
 619         int err, i;
 620         short max;
 621         __le16 zdmax;
 622         unsigned char *buffer;
 623
 624         buffer = kzalloc(ZD1201_RXSIZE, GFP_KERNEL);
 625         if (!buffer)
 626                 return -ENOMEM;
 627
 628         usb_fill_bulk_urb(zd->rx_urb, zd->usb,
 629             usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
 630             zd1201_usbrx, zd);
 631
 632         err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
 633         if (err)
 634                 goto err_buffer;
 635
 636         err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
 637         if (err)
 638                 goto err_urb;
 639
 640         err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
 641             sizeof(__le16));
 642         if (err)
 643                 goto err_urb;
 644
 645         max = le16_to_cpu(zdmax);
 646         for (i=0; i<max; i++) {
 647                 err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
 648                 if (err)
 649                         goto err_urb;
 650         }
 651
 652         return 0;
 653
 654 err_urb:
 655         usb_kill_urb(zd->rx_urb);
 656         return err;
 657 err_buffer:
 658         kfree(buffer);
 659         return err;
 660 }
 661
 662 /*      Magic alert: The firmware doesn't seem to like the MAC state being
 663  *      toggled in promisc (aka monitor) mode.
 664  *      (It works a number of times, but will halt eventually)
 665  *      So we turn it of before disabling and on after enabling if needed.
 666  */
 667 static int zd1201_enable(struct zd1201 *zd)
 668 {
 669         int err;
 670
 671         if (zd->mac_enabled)
 672                 return 0;
 673
 674         err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
 675         if (!err)
 676                 zd->mac_enabled = 1;
 677
 678         if (zd->monitor)
 679                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
 680
 681         return err;
 682 }
 683
 684 static int zd1201_disable(struct zd1201 *zd)
 685 {
 686         int err;
 687
 688         if (!zd->mac_enabled)
 689                 return 0;
 690         if (zd->monitor) {
 691                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 692                 if (err)
 693                         return err;
 694         }
 695
 696         err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
 697         if (!err)
 698                 zd->mac_enabled = 0;
 699         return err;
 700 }
 701
 702 static int zd1201_mac_reset(struct zd1201 *zd)
 703 {
 704         if (!zd->mac_enabled)
 705                 return 0;
 706         zd1201_disable(zd);
 707         return zd1201_enable(zd);
 708 }
 709
 710 static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
 711 {
 712         int err, val;
 713         char buf[IW_ESSID_MAX_SIZE+2];
 714
 715         err = zd1201_disable(zd);
 716         if (err)
 717                 return err;
 718
 719         val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
 720         val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
 721         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
 722         if (err)
 723                 return err;
 724
 725         *(__le16 *)buf = cpu_to_le16(essidlen);
 726         memcpy(buf+2, essid, essidlen);
 727         if (!zd->ap) {  /* Normal station */
 728                 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
 729                     IW_ESSID_MAX_SIZE+2, 1);
 730                 if (err)
 731                         return err;
 732         } else {        /* AP */
 733                 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
 734                     IW_ESSID_MAX_SIZE+2, 1);
 735                 if (err)
 736                         return err;
 737         }
 738
 739         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 740             zd->dev->dev_addr, zd->dev->addr_len, 1);
 741         if (err)
 742                 return err;
 743
 744         err = zd1201_enable(zd);
 745         if (err)
 746                 return err;
 747
 748         msleep(100);
 749         return 0;
 750 }
 751
 752 static int zd1201_net_open(struct net_device *dev)
 753 {
 754         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 755
 756         /* Start MAC with wildcard if no essid set */
 757         if (!zd->mac_enabled)
 758                 zd1201_join(zd, zd->essid, zd->essidlen);
 759         netif_start_queue(dev);
 760
 761         return 0;
 762 }
 763
 764 static int zd1201_net_stop(struct net_device *dev)
 765 {
 766         netif_stop_queue(dev);
 767
 768         return 0;
 769 }
 770
 771 /*
 772         RFC 1042 encapsulates Ethernet frames in 802.11 frames
 773         by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
 774         (0x00, 0x00, 0x00). Zd requires an additional padding, copy
 775         of ethernet addresses, length of the standard RFC 1042 packet
 776         and a command byte (which is nul for tx).
 777
 778         tx frame (from Wlan NG):
 779         RFC 1042:
 780                 llc             0xAA 0xAA 0x03 (802.2 LLC)
 781                 snap            0x00 0x00 0x00 (Ethernet encapsulated)
 782                 type            2 bytes, Ethernet type field
 783                 payload         (minus eth header)
 784         Zydas specific:
 785                 padding         1B if (skb->len+8+1)%64==0
 786                 Eth MAC addr    12 bytes, Ethernet MAC addresses
 787                 length          2 bytes, RFC 1042 packet length
 788                                 (llc+snap+type+payload)
 789                 zd              1 null byte, zd1201 packet type
 790  */
 791 static int zd1201_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 792 {
 793         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 794         unsigned char *txbuf = zd->txdata;
 795         int txbuflen, pad = 0, err;
 796         struct urb *urb = zd->tx_urb;
 797
 798         if (!zd->mac_enabled || zd->monitor) {
 799                 zd->stats.tx_dropped++;
 800                 kfree_skb(skb);
 801                 return 0;
 802         }
 803         netif_stop_queue(dev);
 804
 805         txbuflen = skb->len + 8 + 1;
 806         if (txbuflen%64 == 0) {
 807                 pad = 1;
 808                 txbuflen++;
 809         }
 810         txbuf[0] = 0xAA;
 811         txbuf[1] = 0xAA;
 812         txbuf[2] = 0x03;
 813         txbuf[3] = 0x00;        /* rfc1042 */
 814         txbuf[4] = 0x00;
 815         txbuf[5] = 0x00;
 816
 817         memcpy(txbuf+6, skb->data+12, skb->len-12);
 818         if (pad)
 819                 txbuf[skb->len-12+6]=0;
 820         memcpy(txbuf+skb->len-12+6+pad, skb->data, 12);
 821         *(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
 822         txbuf[txbuflen-1] = 0;
 823
 824         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
 825             txbuf, txbuflen, zd1201_usbtx, zd);
 826
 827         err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
 828         if (err) {
 829                 zd->stats.tx_errors++;
 830                 netif_start_queue(dev);
 831                 return err;
 832         }
 833         zd->stats.tx_packets++;
 834         zd->stats.tx_bytes += skb->len;
 835         dev->trans_start = jiffies;
 836         kfree_skb(skb);
 837
 838         return 0;
 839 }
 840
 841 static void zd1201_tx_timeout(struct net_device *dev)
 842 {
 843         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 844
 845         if (!zd)
 846                 return;
 847         dev_warn(&zd->usb->dev, "%s: TX timeout, shooting down urb\n",
 848             dev->name);
 849         usb_unlink_urb(zd->tx_urb);
 850         zd->stats.tx_errors++;
 851         /* Restart the timeout to quiet the watchdog: */
 852         dev->trans_start = jiffies;
 853 }
 854
 855 static int zd1201_set_mac_address(struct net_device *dev, void *p)
 856 {
 857         struct sockaddr *addr = p;
 858         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 859         int err;
 860
 861         if (!zd)
 862                 return -ENODEV;
 863
 864         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 865             addr->sa_data, dev->addr_len, 1);
 866         if (err)
 867                 return err;
 868         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
 869
 870         return zd1201_mac_reset(zd);
 871 }
 872
 873 static struct net_device_stats *zd1201_get_stats(struct net_device *dev)
 874 {
 875         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 876
 877         return &zd->stats;
 878 }
 879
 880 static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
 881 {
 882         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 883
 884         return &zd->iwstats;
 885 }
 886
 887 static void zd1201_set_multicast(struct net_device *dev)
 888 {
 889         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 890         struct dev_mc_list *mc = dev->mc_list;
 891         unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
 892         int i;
 893
 894         if (dev->mc_count > ZD1201_MAXMULTI)
 895                 return;
 896
 897         for (i=0; i<dev->mc_count; i++) {
 898                 memcpy(reqbuf+i*ETH_ALEN, mc->dmi_addr, ETH_ALEN);
 899                 mc = mc->next;
 900         }
 901         zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
 902             dev->mc_count*ETH_ALEN, 0);
 903
 904 }
 905
 906 static int zd1201_config_commit(struct net_device *dev,
 907     struct iw_request_info *info, struct iw_point *data, char *essid)
 908 {
 909         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 910
 911         return zd1201_mac_reset(zd);
 912 }
 913
 914 static int zd1201_get_name(struct net_device *dev,
 915     struct iw_request_info *info, char *name, char *extra)
 916 {
 917         strcpy(name, "IEEE 802.11b");
 918
 919         return 0;
 920 }
 921
 922 static int zd1201_set_freq(struct net_device *dev,
 923     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 924 {
 925         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 926         short channel = 0;
 927         int err;
 928
 929         if (freq->e == 0)
 930                 channel = freq->m;
 931         else {
 932                 if (freq->m >= 2482)
 933                         channel = 14;
 934                 if (freq->m >= 2407)
 935                         channel = (freq->m-2407)/5;
 936         }
 937
 938         err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
 939         if (err)
 940                 return err;
 941
 942         zd1201_mac_reset(zd);
 943
 944         return 0;
 945 }
 946
 947 static int zd1201_get_freq(struct net_device *dev,
 948     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 949 {
 950         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 951         short channel;
 952         int err;
 953
 954         err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
 955         if (err)
 956                 return err;
 957         freq->e = 0;
 958         freq->m = channel;
 959
 960         return 0;
 961 }
 962
 963 static int zd1201_set_mode(struct net_device *dev,
 964     struct iw_request_info *info, __u32 *mode, char *extra)
 965 {
 966         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 967         short porttype, monitor = 0;
 968         unsigned char buffer[IW_ESSID_MAX_SIZE+2];
 969         int err;
 970
 971         if (zd->ap) {
 972                 if (*mode != IW_MODE_MASTER)
 973                         return -EINVAL;
 974                 return 0;
 975         }
 976
 977         err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 978         if (err)
 979                 return err;
 980         zd->dev->type = ARPHRD_ETHER;
 981         switch(*mode) {
 982                 case IW_MODE_MONITOR:
 983                         monitor = 1;
 984                         zd->dev->type = ARPHRD_IEEE80211;
 985                         /* Make sure we are no longer associated with by
 986                            setting an 'impossible' essid.
 987                            (otherwise we mess up firmware)
 988                          */
 989                         zd1201_join(zd, "\0-*#\0", 5);
 990                         /* Put port in pIBSS */
 991                 case 8: /* No pseudo-IBSS in wireless extensions (yet) */
 992                         porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
 993                         break;
 994                 case IW_MODE_ADHOC:
 995                         porttype = ZD1201_PORTTYPE_IBSS;
 996                         break;
 997                 case IW_MODE_INFRA:
 998                         porttype = ZD1201_PORTTYPE_BSS;
 999                         break;
1000                 default:
1001                         return -EINVAL;
1002         }
1003
1004         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1005         if (err)
1006                 return err;
1007         if (zd->monitor && !monitor) {
1008                         zd1201_disable(zd);
1009                         *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
1010                         memcpy(buffer+2, zd->essid, zd->essidlen);
1011                         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
1012                             buffer, IW_ESSID_MAX_SIZE+2, 1);
1013                         if (err)
1014                                 return err;
1015         }
1016         zd->monitor=monitor;
1017         /* If monitor mode is set we don't actually turn it on here since it
1018          * is done during mac reset anyway (see zd1201_mac_enable).
1019          */
1020
1021         zd1201_mac_reset(zd);
1022
1023         return 0;
1024 }
1025
1026 static int zd1201_get_mode(struct net_device *dev,
1027     struct iw_request_info *info, __u32 *mode, char *extra)
1028 {
1029         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1030         short porttype;
1031         int err;
1032
1033         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1034         if (err)
1035                 return err;
1036         switch(porttype) {
1037                 case ZD1201_PORTTYPE_IBSS:
1038                         *mode = IW_MODE_ADHOC;
1039                         break;
1040                 case ZD1201_PORTTYPE_BSS:
1041                         *mode = IW_MODE_INFRA;
1042                         break;
1043                 case ZD1201_PORTTYPE_WDS:
1044                         *mode = IW_MODE_REPEAT;
1045                         break;
1046                 case ZD1201_PORTTYPE_PSEUDOIBSS:
1047                         *mode = 8;/* No Pseudo-IBSS... */
1048                         break;
1049                 case ZD1201_PORTTYPE_AP:
1050                         *mode = IW_MODE_MASTER;
1051                         break;
1052                 default:
1053                         dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1054                             porttype);
1055                         *mode = IW_MODE_AUTO;
1056         }
1057         if (zd->monitor)
1058                 *mode = IW_MODE_MONITOR;
1059
1060         return 0;
1061 }
1062
1063 static int zd1201_get_range(struct net_device *dev,
1064     struct iw_request_info *info, struct iw_point *wrq, char *extra)
1065 {
1066         struct iw_range *range = (struct iw_range *)extra;
1067
1068         wrq->length = sizeof(struct iw_range);
1069         memset(range, 0, sizeof(struct iw_range));
1070         range->we_version_compiled = WIRELESS_EXT;
1071         range->we_version_source = WIRELESS_EXT;
1072
1073         range->max_qual.qual = 128;
1074         range->max_qual.level = 128;
1075         range->max_qual.noise = 128;
1076         range->max_qual.updated = 7;
1077
1078         range->encoding_size[0] = 5;
1079         range->encoding_size[1] = 13;
1080         range->num_encoding_sizes = 2;
1081         range->max_encoding_tokens = ZD1201_NUMKEYS;
1082
1083         range->num_bitrates = 4;
1084         range->bitrate[0] = 1000000;
1085         range->bitrate[1] = 2000000;
1086         range->bitrate[2] = 5500000;
1087         range->bitrate[3] = 11000000;
1088
1089         range->min_rts = 0;
1090         range->min_frag = ZD1201_FRAGMIN;
1091         range->max_rts = ZD1201_RTSMAX;
1092         range->min_frag = ZD1201_FRAGMAX;
1093
1094         return 0;
1095 }
1096
1097 /*      Little bit of magic here: we only get the quality if we poll
1098  *      for it, and we never get an actual request to trigger such
1099  *      a poll. Therefore we 'assume' that the user will soon ask for
1100  *      the stats after asking the bssid.
1101  */
1102 static int zd1201_get_wap(struct net_device *dev,
1103     struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1104 {
1105         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1106         unsigned char buffer[6];
1107
1108         if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1109                 /* Unfortunately the quality and noise reported is useless.
1110                    they seem to be accumulators that increase until you
1111                    read them, unless we poll on a fixed interval we can't
1112                    use them
1113                  */
1114                 /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1115                 zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1116                 /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1117                 zd->iwstats.qual.updated = 2;
1118         }
1119
1120         return zd1201_getconfig(zd,ZD1201_RID_CURRENTBSSID,ap_addr->sa_data,6);
1121 }
1122
1123 static int zd1201_set_scan(struct net_device *dev,
1124     struct iw_request_info *info, struct iw_point *srq, char *extra)
1125 {
1126         /* We do everything in get_scan */
1127         return 0;
1128 }
1129
1130 static int zd1201_get_scan(struct net_device *dev,
1131     struct iw_request_info *info, struct iw_point *srq, char *extra)
1132 {
1133         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1134         int err, i, j, enabled_save;
1135         struct iw_event iwe;
1136         char *cev = extra;
1137         char *end_buf = extra + IW_SCAN_MAX_DATA;
1138
1139         /* No scanning in AP mode */
1140         if (zd->ap)
1141                 return -EOPNOTSUPP;
1142
1143         /* Scan doesn't seem to work if disabled */
1144         enabled_save = zd->mac_enabled;
1145         zd1201_enable(zd);
1146
1147         zd->rxdatas = 0;
1148         err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE,
1149              ZD1201_INQ_SCANRESULTS, 0, 0);
1150         if (err)
1151                 return err;
1152
1153         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1154         if (!zd->rxlen)
1155                 return -EIO;
1156
1157         if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1158                 return -EIO;
1159
1160         for(i=8; i<zd->rxlen; i+=62) {
1161                 iwe.cmd = SIOCGIWAP;
1162                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1163                 memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1164                 cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_ADDR_LEN);
1165
1166                 iwe.cmd = SIOCGIWESSID;
1167                 iwe.u.data.length = zd->rxdata[i+16];
1168                 iwe.u.data.flags = 1;
1169                 cev = iwe_stream_add_point(cev, end_buf, &iwe, zd->rxdata+i+18);
1170
1171                 iwe.cmd = SIOCGIWMODE;
1172                 if (zd->rxdata[i+14]&0x01)
1173                         iwe.u.mode = IW_MODE_MASTER;
1174                 else
1175                         iwe.u.mode = IW_MODE_ADHOC;
1176                 cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_UINT_LEN);
1177
1178                 iwe.cmd = SIOCGIWFREQ;
1179                 iwe.u.freq.m = zd->rxdata[i+0];
1180                 iwe.u.freq.e = 0;
1181                 cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_FREQ_LEN);
1182
1183                 iwe.cmd = SIOCGIWRATE;
1184                 iwe.u.bitrate.fixed = 0;
1185                 iwe.u.bitrate.disabled = 0;
1186                 for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
1187                         iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
1188                         cev=iwe_stream_add_event(cev, end_buf, &iwe,
1189                             IW_EV_PARAM_LEN);
1190                 }
1191
1192                 iwe.cmd = SIOCGIWENCODE;
1193                 iwe.u.data.length = 0;
1194                 if (zd->rxdata[i+14]&0x10)
1195                         iwe.u.data.flags = IW_ENCODE_ENABLED;
1196                 else
1197                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1198                 cev = iwe_stream_add_point(cev, end_buf, &iwe, NULL);
1199
1200                 iwe.cmd = IWEVQUAL;
1201                 iwe.u.qual.qual = zd->rxdata[i+4];
1202                 iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
1203                 iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
1204                 iwe.u.qual.updated = 7;
1205                 cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_QUAL_LEN);
1206         }
1207
1208         if (!enabled_save)
1209                 zd1201_disable(zd);
1210
1211         srq->length = cev - extra;
1212         srq->flags = 0;
1213
1214         return 0;
1215 }
1216
1217 static int zd1201_set_essid(struct net_device *dev,
1218     struct iw_request_info *info, struct iw_point *data, char *essid)
1219 {
1220         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1221
1222         if (data->length > IW_ESSID_MAX_SIZE)
1223                 return -EINVAL;
1224         if (data->length < 1)
1225                 data->length = 1;
1226         zd->essidlen = data->length-1;
1227         memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1228         memcpy(zd->essid, essid, data->length);
1229         return zd1201_join(zd, zd->essid, zd->essidlen);
1230 }
1231
1232 static int zd1201_get_essid(struct net_device *dev,
1233     struct iw_request_info *info, struct iw_point *data, char *essid)
1234 {
1235         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1236
1237         memcpy(essid, zd->essid, zd->essidlen);
1238         data->flags = 1;
1239         data->length = zd->essidlen;
1240
1241         return 0;
1242 }
1243
1244 static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1245     struct iw_point *data, char *nick)
1246 {
1247         strcpy(nick, "zd1201");
1248         data->flags = 1;
1249         data->length = strlen(nick);
1250         return 0;
1251 }
1252
1253 static int zd1201_set_rate(struct net_device *dev,
1254     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1255 {
1256         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1257         short rate;
1258         int err;
1259
1260         switch (rrq->value) {
1261                 case 1000000:
1262                         rate = ZD1201_RATEB1;
1263                         break;
1264                 case 2000000:
1265                         rate = ZD1201_RATEB2;
1266                         break;
1267                 case 5500000:
1268                         rate = ZD1201_RATEB5;
1269                         break;
1270                 case 11000000:
1271                 default:
1272                         rate = ZD1201_RATEB11;
1273                         break;
1274         }
1275         if (!rrq->fixed) { /* Also enable all lower bitrates */
1276                 rate |= rate-1;
1277         }
1278
1279         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1280         if (err)
1281                 return err;
1282
1283         return zd1201_mac_reset(zd);
1284 }
1285
1286 static int zd1201_get_rate(struct net_device *dev,
1287     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1288 {
1289         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1290         short rate;
1291         int err;
1292
1293         err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1294         if (err)
1295                 return err;
1296
1297         switch(rate) {
1298                 case 1:
1299                         rrq->value = 1000000;
1300                         break;
1301                 case 2:
1302                         rrq->value = 2000000;
1303                         break;
1304                 case 5:
1305                         rrq->value = 5500000;
1306                         break;
1307                 case 11:
1308                         rrq->value = 11000000;
1309                         break;
1310                 default:
1311                         rrq->value = 0;
1312         }
1313         rrq->fixed = 0;
1314         rrq->disabled = 0;
1315
1316         return 0;
1317 }
1318
1319 static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1320     struct iw_param *rts, char *extra)
1321 {
1322         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1323         int err;
1324         short val = rts->value;
1325
1326         if (rts->disabled || !rts->fixed)
1327                 val = ZD1201_RTSMAX;
1328         if (val > ZD1201_RTSMAX)
1329                 return -EINVAL;
1330         if (val < 0)
1331                 return -EINVAL;
1332
1333         err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1334         if (err)
1335                 return err;
1336         return zd1201_mac_reset(zd);
1337 }
1338
1339 static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1340     struct iw_param *rts, char *extra)
1341 {
1342         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1343         short rtst;
1344         int err;
1345
1346         err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1347         if (err)
1348                 return err;
1349         rts->value = rtst;
1350         rts->disabled = (rts->value == ZD1201_RTSMAX);
1351         rts->fixed = 1;
1352
1353         return 0;
1354 }
1355
1356 static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1357     struct iw_param *frag, char *extra)
1358 {
1359         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1360         int err;
1361         short val = frag->value;
1362
1363         if (frag->disabled || !frag->fixed)
1364                 val = ZD1201_FRAGMAX;
1365         if (val > ZD1201_FRAGMAX)
1366                 return -EINVAL;
1367         if (val < ZD1201_FRAGMIN)
1368                 return -EINVAL;
1369         if (val & 1)
1370                 return -EINVAL;
1371         err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1372         if (err)
1373                 return err;
1374         return zd1201_mac_reset(zd);
1375 }
1376
1377 static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1378     struct iw_param *frag, char *extra)
1379 {
1380         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1381         short fragt;
1382         int err;
1383
1384         err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1385         if (err)
1386                 return err;
1387         frag->value = fragt;
1388         frag->disabled = (frag->value == ZD1201_FRAGMAX);
1389         frag->fixed = 1;
1390
1391         return 0;
1392 }
1393
1394 static int zd1201_set_retry(struct net_device *dev,
1395     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1396 {
1397         return 0;
1398 }
1399
1400 static int zd1201_get_retry(struct net_device *dev,
1401     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1402 {
1403         return 0;
1404 }
1405
1406 static int zd1201_set_encode(struct net_device *dev,
1407     struct iw_request_info *info, struct iw_point *erq, char *key)
1408 {
1409         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1410         short i;
1411         int err, rid;
1412
1413         if (erq->length > ZD1201_MAXKEYLEN)
1414                 return -EINVAL;
1415
1416         i = (erq->flags & IW_ENCODE_INDEX)-1;
1417         if (i == -1) {
1418                 err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1419                 if (err)
1420                         return err;
1421         } else {
1422                 err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1423                 if (err)
1424                         return err;
1425         }
1426
1427         if (i < 0 || i >= ZD1201_NUMKEYS)
1428                 return -EINVAL;
1429
1430         rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1431         err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1432         if (err)
1433                 return err;
1434         zd->encode_keylen[i] = erq->length;
1435         memcpy(zd->encode_keys[i], key, erq->length);
1436
1437         i=0;
1438         if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1439                 i |= 0x01;
1440                 zd->encode_enabled = 1;
1441         } else
1442                 zd->encode_enabled = 0;
1443         if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1444                 i |= 0x02;
1445                 zd->encode_restricted = 1;
1446         } else
1447                 zd->encode_restricted = 0;
1448         err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1449         if (err)
1450                 return err;
1451
1452         if (zd->encode_enabled)
1453                 i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1454         else
1455                 i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1456         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1457         if (err)
1458                 return err;
1459
1460         return zd1201_mac_reset(zd);
1461 }
1462
1463 static int zd1201_get_encode(struct net_device *dev,
1464     struct iw_request_info *info, struct iw_point *erq, char *key)
1465 {
1466         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1467         short i;
1468         int err;
1469
1470         if (zd->encode_enabled)
1471                 erq->flags = IW_ENCODE_ENABLED;
1472         else
1473                 erq->flags = IW_ENCODE_DISABLED;
1474         if (zd->encode_restricted)
1475                 erq->flags |= IW_ENCODE_RESTRICTED;
1476         else
1477                 erq->flags |= IW_ENCODE_OPEN;
1478
1479         i = (erq->flags & IW_ENCODE_INDEX) -1;
1480         if (i == -1) {
1481                 err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1482                 if (err)
1483                         return err;
1484         }
1485         if (i<0 || i>= ZD1201_NUMKEYS)
1486                 return -EINVAL;
1487
1488         erq->flags |= i+1;
1489
1490         erq->length = zd->encode_keylen[i];
1491         memcpy(key, zd->encode_keys[i], erq->length);
1492
1493         return 0;
1494 }
1495
1496 static int zd1201_set_power(struct net_device *dev,
1497     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1498 {
1499         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1500         short enabled, duration, level;
1501         int err;
1502
1503         enabled = vwrq->disabled ? 0 : 1;
1504         if (enabled) {
1505                 if (vwrq->flags & IW_POWER_PERIOD) {
1506                         duration = vwrq->value;
1507                         err = zd1201_setconfig16(zd,
1508                             ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1509                         if (err)
1510                                 return err;
1511                         goto out;
1512                 }
1513                 if (vwrq->flags & IW_POWER_TIMEOUT) {
1514                         err = zd1201_getconfig16(zd,
1515                             ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1516                         if (err)
1517                                 return err;
1518                         level = vwrq->value * 4 / duration;
1519                         if (level > 4)
1520                                 level = 4;
1521                         if (level < 0)
1522                                 level = 0;
1523                         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1524                             level);
1525                         if (err)
1526                                 return err;
1527                         goto out;
1528                 }
1529                 return -EINVAL;
1530         }
1531 out:
1532         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1533         if (err)
1534                 return err;
1535
1536         return 0;
1537 }
1538
1539 static int zd1201_get_power(struct net_device *dev,
1540     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1541 {
1542         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1543         short enabled, level, duration;
1544         int err;
1545
1546         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1547         if (err)
1548                 return err;
1549         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1550         if (err)
1551                 return err;
1552         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1553         if (err)
1554                 return err;
1555         vwrq->disabled = enabled ? 0 : 1;
1556         if (vwrq->flags & IW_POWER_TYPE) {
1557                 if (vwrq->flags & IW_POWER_PERIOD) {
1558                         vwrq->value = duration;
1559                         vwrq->flags = IW_POWER_PERIOD;
1560                 } else {
1561                         vwrq->value = duration * level / 4;
1562                         vwrq->flags = IW_POWER_TIMEOUT;
1563                 }
1564         }
1565         if (vwrq->flags & IW_POWER_MODE) {
1566                 if (enabled && level)
1567                         vwrq->flags = IW_POWER_UNICAST_R;
1568                 else
1569                         vwrq->flags = IW_POWER_ALL_R;
1570         }
1571
1572         return 0;
1573 }
1574
1575
1576 static const iw_handler zd1201_iw_handler[] =
1577 {
1578         (iw_handler) zd1201_config_commit,      /* SIOCSIWCOMMIT */
1579         (iw_handler) zd1201_get_name,           /* SIOCGIWNAME */
1580         (iw_handler) NULL,                      /* SIOCSIWNWID */
1581         (iw_handler) NULL,                      /* SIOCGIWNWID */
1582         (iw_handler) zd1201_set_freq,           /* SIOCSIWFREQ */
1583         (iw_handler) zd1201_get_freq,           /* SIOCGIWFREQ */
1584         (iw_handler) zd1201_set_mode,           /* SIOCSIWMODE */
1585         (iw_handler) zd1201_get_mode,           /* SIOCGIWMODE */
1586         (iw_handler) NULL,                      /* SIOCSIWSENS */
1587         (iw_handler) NULL,                      /* SIOCGIWSENS */
1588         (iw_handler) NULL,                      /* SIOCSIWRANGE */
1589         (iw_handler) zd1201_get_range,           /* SIOCGIWRANGE */
1590         (iw_handler) NULL,                      /* SIOCSIWPRIV */
1591         (iw_handler) NULL,                      /* SIOCGIWPRIV */
1592         (iw_handler) NULL,                      /* SIOCSIWSTATS */
1593         (iw_handler) NULL,                      /* SIOCGIWSTATS */
1594         (iw_handler) NULL,                      /* SIOCSIWSPY */
1595         (iw_handler) NULL,                      /* SIOCGIWSPY */
1596         (iw_handler) NULL,                      /* -- hole -- */
1597         (iw_handler) NULL,                      /* -- hole -- */
1598         (iw_handler) NULL/*zd1201_set_wap*/,            /* SIOCSIWAP */
1599         (iw_handler) zd1201_get_wap,            /* SIOCGIWAP */
1600         (iw_handler) NULL,                      /* -- hole -- */
1601         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
1602         (iw_handler) zd1201_set_scan,           /* SIOCSIWSCAN */
1603         (iw_handler) zd1201_get_scan,           /* SIOCGIWSCAN */
1604         (iw_handler) zd1201_set_essid,          /* SIOCSIWESSID */
1605         (iw_handler) zd1201_get_essid,          /* SIOCGIWESSID */
1606         (iw_handler) NULL,                      /* SIOCSIWNICKN */
1607         (iw_handler) zd1201_get_nick,           /* SIOCGIWNICKN */
1608         (iw_handler) NULL,                      /* -- hole -- */
1609         (iw_handler) NULL,                      /* -- hole -- */
1610         (iw_handler) zd1201_set_rate,           /* SIOCSIWRATE */
1611         (iw_handler) zd1201_get_rate,           /* SIOCGIWRATE */
1612         (iw_handler) zd1201_set_rts,            /* SIOCSIWRTS */
1613         (iw_handler) zd1201_get_rts,            /* SIOCGIWRTS */
1614         (iw_handler) zd1201_set_frag,           /* SIOCSIWFRAG */
1615         (iw_handler) zd1201_get_frag,           /* SIOCGIWFRAG */
1616         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
1617         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
1618         (iw_handler) zd1201_set_retry,          /* SIOCSIWRETRY */
1619         (iw_handler) zd1201_get_retry,          /* SIOCGIWRETRY */
1620         (iw_handler) zd1201_set_encode,         /* SIOCSIWENCODE */
1621         (iw_handler) zd1201_get_encode,         /* SIOCGIWENCODE */
1622         (iw_handler) zd1201_set_power,          /* SIOCSIWPOWER */
1623         (iw_handler) zd1201_get_power,          /* SIOCGIWPOWER */
1624 };
1625
1626 static int zd1201_set_hostauth(struct net_device *dev,
1627     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1628 {
1629         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1630         int err;
1631
1632         if (!zd->ap)
1633                 return -EOPNOTSUPP;
1634
1635         err = zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1636         if (err)
1637                 return err;
1638         return 0;
1639 }
1640
1641 static int zd1201_get_hostauth(struct net_device *dev,
1642     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1643 {
1644         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1645         short hostauth;
1646         int err;
1647
1648         if (!zd->ap)
1649                 return -EOPNOTSUPP;
1650
1651         err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1652         if (err)
1653                 return err;
1654         rrq->value = hostauth;
1655         rrq->fixed = 1;
1656
1657         return 0;
1658 }
1659
1660 static int zd1201_auth_sta(struct net_device *dev,
1661     struct iw_request_info *info, struct sockaddr *sta, char *extra)
1662 {
1663         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1664         unsigned char buffer[10];
1665
1666         if (!zd->ap)
1667                 return -EOPNOTSUPP;
1668
1669         memcpy(buffer, sta->sa_data, ETH_ALEN);
1670         *(short*)(buffer+6) = 0;        /* 0==success, 1==failure */
1671         *(short*)(buffer+8) = 0;
1672
1673         return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1674 }
1675
1676 static int zd1201_set_maxassoc(struct net_device *dev,
1677     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1678 {
1679         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1680         int err;
1681
1682         if (!zd->ap)
1683                 return -EOPNOTSUPP;
1684
1685         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1686         if (err)
1687                 return err;
1688         return 0;
1689 }
1690
1691 static int zd1201_get_maxassoc(struct net_device *dev,
1692     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1693 {
1694         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1695         short maxassoc;
1696         int err;
1697
1698         if (!zd->ap)
1699                 return -EOPNOTSUPP;
1700
1701         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1702         if (err)
1703                 return err;
1704         rrq->value = maxassoc;
1705         rrq->fixed = 1;
1706
1707         return 0;
1708 }
1709
1710 static const iw_handler zd1201_private_handler[] = {
1711         (iw_handler) zd1201_set_hostauth,       /* ZD1201SIWHOSTAUTH */
1712         (iw_handler) zd1201_get_hostauth,       /* ZD1201GIWHOSTAUTH */
1713         (iw_handler) zd1201_auth_sta,           /* ZD1201SIWAUTHSTA */
1714         (iw_handler) NULL,                      /* nothing to get */
1715         (iw_handler) zd1201_set_maxassoc,       /* ZD1201SIMAXASSOC */
1716         (iw_handler) zd1201_get_maxassoc,       /* ZD1201GIMAXASSOC */
1717 };
1718
1719 static const struct iw_priv_args zd1201_private_args[] = {
1720         { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1721             IW_PRIV_TYPE_NONE, "sethostauth" },
1722         { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1723             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1724         { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1725             IW_PRIV_TYPE_NONE, "authstation" },
1726         { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1727             IW_PRIV_TYPE_NONE, "setmaxassoc" },
1728         { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1729             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1730 };
1731
1732 static const struct iw_handler_def zd1201_iw_handlers = {
1733         .num_standard           = ARRAY_SIZE(zd1201_iw_handler),
1734         .num_private            = ARRAY_SIZE(zd1201_private_handler),
1735         .num_private_args       = ARRAY_SIZE(zd1201_private_args),
1736         .standard               = (iw_handler *)zd1201_iw_handler,
1737         .private                = (iw_handler *)zd1201_private_handler,
1738         .private_args           = (struct iw_priv_args *) zd1201_private_args,
1739         .get_wireless_stats     = zd1201_get_wireless_stats,
1740 };
1741
1742 static int zd1201_probe(struct usb_interface *interface,
1743                         const struct usb_device_id *id)
1744 {
1745         struct zd1201 *zd;
1746         struct usb_device *usb;
1747         int i, err;
1748         short porttype;
1749         char buf[IW_ESSID_MAX_SIZE+2];
1750
1751         usb = interface_to_usbdev(interface);
1752
1753         zd = kzalloc(sizeof(struct zd1201), GFP_KERNEL);
1754         if (!zd)
1755                 return -ENOMEM;
1756         zd->ap = ap;
1757         zd->usb = usb;
1758         zd->removed = 0;
1759         init_waitqueue_head(&zd->rxdataq);
1760         INIT_HLIST_HEAD(&zd->fraglist);
1761
1762         err = zd1201_fw_upload(usb, zd->ap);
1763         if (err) {
1764                 dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
1765                 goto err_zd;
1766         }
1767
1768         zd->endp_in = 1;
1769         zd->endp_out = 1;
1770         zd->endp_out2 = 2;
1771         zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1772         zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1773         if (!zd->rx_urb || !zd->tx_urb)
1774                 goto err_zd;
1775
1776         for(i = 0; i<100; i++)
1777                 udelay(1000);
1778
1779         err = zd1201_drvr_start(zd);
1780         if (err)
1781                 goto err_zd;
1782
1783         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
1784         if (err)
1785                 goto err_start;
1786
1787         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
1788             ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
1789         if (err)
1790                 goto err_start;
1791
1792         zd->dev = alloc_etherdev(0);
1793         if (!zd->dev)
1794                 goto err_start;
1795
1796         zd->dev->priv = zd;
1797         zd->dev->open = zd1201_net_open;
1798         zd->dev->stop = zd1201_net_stop;
1799         zd->dev->get_stats = zd1201_get_stats;
1800         zd->dev->wireless_handlers =
1801             (struct iw_handler_def *)&zd1201_iw_handlers;
1802         zd->dev->hard_start_xmit = zd1201_hard_start_xmit;
1803         zd->dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
1804         zd->dev->tx_timeout = zd1201_tx_timeout;
1805         zd->dev->set_multicast_list = zd1201_set_multicast;
1806         zd->dev->set_mac_address = zd1201_set_mac_address;
1807         strcpy(zd->dev->name, "wlan%d");
1808
1809         err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR,
1810             zd->dev->dev_addr, zd->dev->addr_len);
1811         if (err)
1812                 goto err_net;
1813
1814         /* Set wildcard essid to match zd->essid */
1815         *(__le16 *)buf = cpu_to_le16(0);
1816         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
1817             IW_ESSID_MAX_SIZE+2, 1);
1818         if (err)
1819                 goto err_net;
1820
1821         if (zd->ap)
1822                 porttype = ZD1201_PORTTYPE_AP;
1823         else
1824                 porttype = ZD1201_PORTTYPE_BSS;
1825         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1826         if (err)
1827                 goto err_net;
1828
1829         SET_NETDEV_DEV(zd->dev, &usb->dev);
1830
1831         err = register_netdev(zd->dev);
1832         if (err)
1833                 goto err_net;
1834         dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
1835             zd->dev->name);
1836
1837         usb_set_intfdata(interface, zd);
1838         return 0;
1839
1840 err_net:
1841         free_netdev(zd->dev);
1842 err_start:
1843         /* Leave the device in reset state */
1844         zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
1845 err_zd:
1846         if (zd->tx_urb)
1847                 usb_free_urb(zd->tx_urb);
1848         if (zd->rx_urb)
1849                 usb_free_urb(zd->rx_urb);
1850         kfree(zd);
1851         return err;
1852 }
1853
1854 static void zd1201_disconnect(struct usb_interface *interface)
1855 {
1856         struct zd1201 *zd=(struct zd1201 *)usb_get_intfdata(interface);
1857         struct hlist_node *node, *node2;
1858         struct zd1201_frag *frag;
1859
1860         if (!zd)
1861                 return;
1862         usb_set_intfdata(interface, NULL);
1863         if (zd->dev) {
1864                 unregister_netdev(zd->dev);
1865                 free_netdev(zd->dev);
1866         }
1867
1868         hlist_for_each_entry_safe(frag, node, node2, &zd->fraglist, fnode) {
1869                 hlist_del_init(&frag->fnode);
1870                 kfree_skb(frag->skb);
1871                 kfree(frag);
1872         }
1873
1874         if (zd->tx_urb) {
1875                 usb_kill_urb(zd->tx_urb);
1876                 usb_free_urb(zd->tx_urb);
1877         }
1878         if (zd->rx_urb) {
1879                 usb_kill_urb(zd->rx_urb);
1880                 usb_free_urb(zd->rx_urb);
1881         }
1882         kfree(zd);
1883 }
1884
1885 #ifdef CONFIG_PM
1886
1887 static int zd1201_suspend(struct usb_interface *interface,
1888                            pm_message_t message)
1889 {
1890         struct zd1201 *zd = usb_get_intfdata(interface);
1891
1892         netif_device_detach(zd->dev);
1893
1894         zd->was_enabled = zd->mac_enabled;
1895
1896         if (zd->was_enabled)
1897                 return zd1201_disable(zd);
1898         else
1899                 return 0;
1900 }
1901
1902 static int zd1201_resume(struct usb_interface *interface)
1903 {
1904         struct zd1201 *zd = usb_get_intfdata(interface);
1905
1906         if (!zd || !zd->dev)
1907                 return -ENODEV;
1908
1909         netif_device_attach(zd->dev);
1910
1911         if (zd->was_enabled)
1912                 return zd1201_enable(zd);
1913         else
1914                 return 0;
1915 }
1916
1917 #else
1918
1919 #define zd1201_suspend NULL
1920 #define zd1201_resume  NULL
1921
1922 #endif
1923
1924 static struct usb_driver zd1201_usb = {
1925         .name = "zd1201",
1926         .probe = zd1201_probe,
1927         .disconnect = zd1201_disconnect,
1928         .id_table = zd1201_table,
1929         .suspend = zd1201_suspend,
1930         .resume = zd1201_resume,
1931 };
1932
1933 static int __init zd1201_init(void)
1934 {
1935         return usb_register(&zd1201_usb);
1936 }
1937
1938 static void __exit zd1201_cleanup(void)
1939 {
1940         usb_deregister(&zd1201_usb);
1941 }
1942
1943 module_init(zd1201_init);
1944 module_exit(zd1201_cleanup);