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(struct zd1201_frag*),
 350                                     GFP_ATOMIC);
 351                                 if (!frag)
 352                                         goto resubmit;
 353                                 skb = dev_alloc_skb(IEEE80211_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, node, &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                         /* Fallthrough */
 381                 } else {
 382                         if (datalen<14)
 383                                 goto resubmit;
 384                         skb = dev_alloc_skb(len + 14 + 2);
 385                         if (!skb)
 386                                 goto resubmit;
 387                         skb_reserve(skb, 2);
 388                         memcpy(skb_put(skb, 12), &data[datalen-14], 12);
 389                         memcpy(skb_put(skb, 2), &data[6], 2);
 390                         memcpy(skb_put(skb, len), data+8, len);
 391                 }
 392                 skb->dev = zd->dev;
 393                 skb->dev->last_rx = jiffies;
 394                 skb->protocol = eth_type_trans(skb, zd->dev);
 395                 zd->stats.rx_packets++;
 396                 zd->stats.rx_bytes += skb->len;
 397                 netif_rx(skb);
 398         }
 399 resubmit:
 400         memset(data, 0, ZD1201_RXSIZE);
 401
 402         urb->status = 0;
 403         urb->dev = zd->usb;
 404         if(usb_submit_urb(urb, GFP_ATOMIC))
 405                 free = 1;
 406
 407 exit:
 408         if (free) {
 409                 zd->rxlen = 0;
 410                 zd->rxdatas = 1;
 411                 wake_up(&zd->rxdataq);
 412                 kfree(urb->transfer_buffer);
 413         }
 414         return;
 415 }
 416
 417 static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
 418         unsigned int riddatalen)
 419 {
 420         int err;
 421         int i = 0;
 422         int code;
 423         int rid_fid;
 424         int length;
 425         unsigned char *pdata;
 426
 427         zd->rxdatas = 0;
 428         err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
 429         if (err)
 430                 return err;
 431
 432         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 433         if (!zd->rxlen)
 434                 return -EIO;
 435
 436         code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
 437         rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
 438         length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
 439         if (length > zd->rxlen)
 440                 length = zd->rxlen-6;
 441
 442         /* If access bit is not on, then error */
 443         if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
 444                 return -EINVAL;
 445
 446         /* Not enough buffer for allocating data */
 447         if (riddatalen != (length - 4)) {
 448                 dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
 449                     riddatalen, zd->rxlen, length, rid, rid_fid);
 450                 return -ENODATA;
 451         }
 452
 453         zd->rxdatas = 0;
 454         /* Issue SetRxRid commnd */
 455         err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
 456         if (err)
 457                 return err;
 458
 459         /* Receive RID record from resource packets */
 460         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 461         if (!zd->rxlen)
 462                 return -EIO;
 463
 464         if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
 465                 dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
 466                     zd->rxdata[zd->rxlen-1]);
 467                 return -EINVAL;
 468         }
 469
 470         /* Set the data pointer and received data length */
 471         pdata = zd->rxdata;
 472         length = zd->rxlen;
 473
 474         do {
 475                 int  actual_length;
 476
 477                 actual_length = (length > 64) ? 64 : length;
 478
 479                 if(pdata[0] != 0x3) {
 480                         dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
 481                             pdata[0]);
 482                         return -EINVAL;
 483                 }
 484
 485                 if (actual_length != 64) {
 486                         /* Trim the last packet type byte */
 487                         actual_length--;
 488                 }
 489
 490                 /* Skip the 4 bytes header (RID length and RID) */
 491                 if(i == 0) {
 492                         pdata += 8;
 493                         actual_length -= 8;
 494                 }
 495                 else {
 496                         pdata += 4;
 497                         actual_length -= 4;
 498                 }
 499
 500                 memcpy(riddata, pdata, actual_length);
 501                 riddata += actual_length;
 502                 pdata += actual_length;
 503                 length -= 64;
 504                 i++;
 505         } while (length > 0);
 506
 507         return 0;
 508 }
 509
 510 /*
 511  *      resreq:
 512  *              byte    type
 513  *              byte    sequence
 514  *              u16     reserved
 515  *              byte    data[12]
 516  *      total: 16
 517  */
 518 static int zd1201_setconfig(struct zd1201 *zd, int rid, void *buf, int len, int wait)
 519 {
 520         int err;
 521         unsigned char *request;
 522         int reqlen;
 523         char seq=0;
 524         struct urb *urb;
 525         unsigned int gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
 526
 527         len += 4;                       /* first 4 are for header */
 528
 529         zd->rxdatas = 0;
 530         zd->rxlen = 0;
 531         for (seq=0; len > 0; seq++) {
 532                 request = kmalloc(16, gfp_mask);
 533                 if (!request)
 534                         return -ENOMEM;
 535                 urb = usb_alloc_urb(0, gfp_mask);
 536                 if (!urb) {
 537                         kfree(request);
 538                         return -ENOMEM;
 539                 }
 540                 memset(request, 0, 16);
 541                 reqlen = len>12 ? 12 : len;
 542                 request[0] = ZD1201_USB_RESREQ;
 543                 request[1] = seq;
 544                 request[2] = 0;
 545                 request[3] = 0;
 546                 if (request[1] == 0) {
 547                         /* add header */
 548                         *(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
 549                         *(__le16*)&request[6] = cpu_to_le16(rid);
 550                         memcpy(request+8, buf, reqlen-4);
 551                         buf += reqlen-4;
 552                 } else {
 553                         memcpy(request+4, buf, reqlen);
 554                         buf += reqlen;
 555                 }
 556
 557                 len -= reqlen;
 558
 559                 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
 560                     zd->endp_out2), request, 16, zd1201_usbfree, zd);
 561                 err = usb_submit_urb(urb, gfp_mask);
 562                 if (err)
 563                         goto err;
 564         }
 565
 566         request = kmalloc(16, gfp_mask);
 567         if (!request)
 568                 return -ENOMEM;
 569         urb = usb_alloc_urb(0, gfp_mask);
 570         if (!urb) {
 571                 kfree(request);
 572                 return -ENOMEM;
 573         }
 574         *((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
 575         *((__le16*)&request[4]) =
 576             cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
 577         *((__le16*)&request[6]) = cpu_to_le16(rid);
 578         *((__le16*)&request[8]) = cpu_to_le16(0);
 579         *((__le16*)&request[10]) = cpu_to_le16(0);
 580         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 581              request, 16, zd1201_usbfree, zd);
 582         err = usb_submit_urb(urb, gfp_mask);
 583         if (err)
 584                 goto err;
 585
 586         if (wait) {
 587                 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 588                 if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
 589                         dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
 590                 }
 591         }
 592
 593         return 0;
 594 err:
 595         kfree(request);
 596         usb_free_urb(urb);
 597         return err;
 598 }
 599
 600 static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
 601 {
 602         int err;
 603         __le16 zdval;
 604
 605         err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
 606         if (err)
 607                 return err;
 608         *val = le16_to_cpu(zdval);
 609         return 0;
 610 }
 611
 612 static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
 613 {
 614         __le16 zdval = cpu_to_le16(val);
 615         return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
 616 }
 617
 618 static int zd1201_drvr_start(struct zd1201 *zd)
 619 {
 620         int err, i;
 621         short max;
 622         __le16 zdmax;
 623         unsigned char *buffer;
 624
 625         buffer = kmalloc(ZD1201_RXSIZE, GFP_KERNEL);
 626         if (!buffer)
 627                 return -ENOMEM;
 628         memset(buffer, 0, ZD1201_RXSIZE);
 629
 630         usb_fill_bulk_urb(zd->rx_urb, zd->usb,
 631             usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
 632             zd1201_usbrx, zd);
 633
 634         err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
 635         if (err)
 636                 goto err_buffer;
 637
 638         err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
 639         if (err)
 640                 goto err_urb;
 641
 642         err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
 643             sizeof(__le16));
 644         if (err)
 645                 goto err_urb;
 646
 647         max = le16_to_cpu(zdmax);
 648         for (i=0; i<max; i++) {
 649                 err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
 650                 if (err)
 651                         goto err_urb;
 652         }
 653
 654         return 0;
 655
 656 err_urb:
 657         usb_kill_urb(zd->rx_urb);
 658         return err;
 659 err_buffer:
 660         kfree(buffer);
 661         return err;
 662 }
 663
 664 /*      Magic alert: The firmware doesn't seem to like the MAC state being
 665  *      toggled in promisc (aka monitor) mode.
 666  *      (It works a number of times, but will halt eventually)
 667  *      So we turn it of before disabling and on after enabling if needed.
 668  */
 669 static int zd1201_enable(struct zd1201 *zd)
 670 {
 671         int err;
 672
 673         if (zd->mac_enabled)
 674                 return 0;
 675
 676         err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
 677         if (!err)
 678                 zd->mac_enabled = 1;
 679
 680         if (zd->monitor)
 681                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
 682
 683         return err;
 684 }
 685
 686 static int zd1201_disable(struct zd1201 *zd)
 687 {
 688         int err;
 689
 690         if (!zd->mac_enabled)
 691                 return 0;
 692         if (zd->monitor) {
 693                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 694                 if (err)
 695                         return err;
 696         }
 697
 698         err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
 699         if (!err)
 700                 zd->mac_enabled = 0;
 701         return err;
 702 }
 703
 704 static int zd1201_mac_reset(struct zd1201 *zd)
 705 {
 706         if (!zd->mac_enabled)
 707                 return 0;
 708         zd1201_disable(zd);
 709         return zd1201_enable(zd);
 710 }
 711
 712 static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
 713 {
 714         int err, val;
 715         char buf[IW_ESSID_MAX_SIZE+2];
 716
 717         err = zd1201_disable(zd);
 718         if (err)
 719                 return err;
 720
 721         val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
 722         val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
 723         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
 724         if (err)
 725                 return err;
 726
 727         *(__le16 *)buf = cpu_to_le16(essidlen);
 728         memcpy(buf+2, essid, essidlen);
 729         if (!zd->ap) {  /* Normal station */
 730                 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
 731                     IW_ESSID_MAX_SIZE+2, 1);
 732                 if (err)
 733                         return err;
 734         } else {        /* AP */
 735                 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
 736                     IW_ESSID_MAX_SIZE+2, 1);
 737                 if (err)
 738                         return err;
 739         }
 740
 741         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 742             zd->dev->dev_addr, zd->dev->addr_len, 1);
 743         if (err)
 744                 return err;
 745
 746         err = zd1201_enable(zd);
 747         if (err)
 748                 return err;
 749
 750         msleep(100);
 751         return 0;
 752 }
 753
 754 static int zd1201_net_open(struct net_device *dev)
 755 {
 756         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 757
 758         /* Start MAC with wildcard if no essid set */
 759         if (!zd->mac_enabled)
 760                 zd1201_join(zd, zd->essid, zd->essidlen);
 761         netif_start_queue(dev);
 762
 763         return 0;
 764 }
 765
 766 static int zd1201_net_stop(struct net_device *dev)
 767 {
 768         netif_stop_queue(dev);
 769
 770         return 0;
 771 }
 772
 773 /*
 774         RFC 1042 encapsulates Ethernet frames in 802.11 frames
 775         by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
 776         (0x00, 0x00, 0x00). Zd requires an additional padding, copy
 777         of ethernet addresses, length of the standard RFC 1042 packet
 778         and a command byte (which is nul for tx).
 779
 780         tx frame (from Wlan NG):
 781         RFC 1042:
 782                 llc             0xAA 0xAA 0x03 (802.2 LLC)
 783                 snap            0x00 0x00 0x00 (Ethernet encapsulated)
 784                 type            2 bytes, Ethernet type field
 785                 payload         (minus eth header)
 786         Zydas specific:
 787                 padding         1B if (skb->len+8+1)%64==0
 788                 Eth MAC addr    12 bytes, Ethernet MAC addresses
 789                 length          2 bytes, RFC 1042 packet length
 790                                 (llc+snap+type+payload)
 791                 zd              1 null byte, zd1201 packet type
 792  */
 793 static int zd1201_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 794 {
 795         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 796         unsigned char *txbuf = zd->txdata;
 797         int txbuflen, pad = 0, err;
 798         struct urb *urb = zd->tx_urb;
 799
 800         if (!zd->mac_enabled || zd->monitor) {
 801                 zd->stats.tx_dropped++;
 802                 kfree_skb(skb);
 803                 return 0;
 804         }
 805         netif_stop_queue(dev);
 806
 807         txbuflen = skb->len + 8 + 1;
 808         if (txbuflen%64 == 0) {
 809                 pad = 1;
 810                 txbuflen++;
 811         }
 812         txbuf[0] = 0xAA;
 813         txbuf[1] = 0xAA;
 814         txbuf[2] = 0x03;
 815         txbuf[3] = 0x00;        /* rfc1042 */
 816         txbuf[4] = 0x00;
 817         txbuf[5] = 0x00;
 818
 819         memcpy(txbuf+6, skb->data+12, skb->len-12);
 820         if (pad)
 821                 txbuf[skb->len-12+6]=0;
 822         memcpy(txbuf+skb->len-12+6+pad, skb->data, 12);
 823         *(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
 824         txbuf[txbuflen-1] = 0;
 825
 826         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
 827             txbuf, txbuflen, zd1201_usbtx, zd);
 828
 829         err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
 830         if (err) {
 831                 zd->stats.tx_errors++;
 832                 netif_start_queue(dev);
 833                 return err;
 834         }
 835         zd->stats.tx_packets++;
 836         zd->stats.tx_bytes += skb->len;
 837         dev->trans_start = jiffies;
 838         kfree_skb(skb);
 839
 840         return 0;
 841 }
 842
 843 static void zd1201_tx_timeout(struct net_device *dev)
 844 {
 845         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 846
 847         if (!zd)
 848                 return;
 849         dev_warn(&zd->usb->dev, "%s: TX timeout, shooting down urb\n",
 850             dev->name);
 851         zd->tx_urb->transfer_flags |= URB_ASYNC_UNLINK;
 852         usb_unlink_urb(zd->tx_urb);
 853         zd->stats.tx_errors++;
 854         /* Restart the timeout to quiet the watchdog: */
 855         dev->trans_start = jiffies;
 856 }
 857
 858 static int zd1201_set_mac_address(struct net_device *dev, void *p)
 859 {
 860         struct sockaddr *addr = p;
 861         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 862         int err;
 863
 864         if (!zd)
 865                 return -ENODEV;
 866
 867         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 868             addr->sa_data, dev->addr_len, 1);
 869         if (err)
 870                 return err;
 871         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
 872
 873         return zd1201_mac_reset(zd);
 874 }
 875
 876 static struct net_device_stats *zd1201_get_stats(struct net_device *dev)
 877 {
 878         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 879
 880         return &zd->stats;
 881 }
 882
 883 static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
 884 {
 885         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 886
 887         return &zd->iwstats;
 888 }
 889
 890 static void zd1201_set_multicast(struct net_device *dev)
 891 {
 892         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 893         struct dev_mc_list *mc = dev->mc_list;
 894         unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
 895         int i;
 896
 897         if (dev->mc_count > ZD1201_MAXMULTI)
 898                 return;
 899
 900         for (i=0; i<dev->mc_count; i++) {
 901                 memcpy(reqbuf+i*ETH_ALEN, mc->dmi_addr, ETH_ALEN);
 902                 mc = mc->next;
 903         }
 904         zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
 905             dev->mc_count*ETH_ALEN, 0);
 906
 907 }
 908
 909 static int zd1201_config_commit(struct net_device *dev,
 910     struct iw_request_info *info, struct iw_point *data, char *essid)
 911 {
 912         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 913
 914         return zd1201_mac_reset(zd);
 915 }
 916
 917 static int zd1201_get_name(struct net_device *dev,
 918     struct iw_request_info *info, char *name, char *extra)
 919 {
 920         strcpy(name, "IEEE 802.11b");
 921
 922         return 0;
 923 }
 924
 925 static int zd1201_set_freq(struct net_device *dev,
 926     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 927 {
 928         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 929         short channel = 0;
 930         int err;
 931
 932         if (freq->e == 0)
 933                 channel = freq->m;
 934         else {
 935                 if (freq->m >= 2482)
 936                         channel = 14;
 937                 if (freq->m >= 2407)
 938                         channel = (freq->m-2407)/5;
 939         }
 940
 941         err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
 942         if (err)
 943                 return err;
 944
 945         zd1201_mac_reset(zd);
 946
 947         return 0;
 948 }
 949
 950 static int zd1201_get_freq(struct net_device *dev,
 951     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 952 {
 953         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 954         short channel;
 955         int err;
 956
 957         err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
 958         if (err)
 959                 return err;
 960         freq->e = 0;
 961         freq->m = channel;
 962
 963         return 0;
 964 }
 965
 966 static int zd1201_set_mode(struct net_device *dev,
 967     struct iw_request_info *info, __u32 *mode, char *extra)
 968 {
 969         struct zd1201 *zd = (struct zd1201 *)dev->priv;
 970         short porttype, monitor = 0;
 971         unsigned char buffer[IW_ESSID_MAX_SIZE+2];
 972         int err;
 973
 974         if (zd->ap) {
 975                 if (*mode != IW_MODE_MASTER)
 976                         return -EINVAL;
 977                 return 0;
 978         }
 979
 980         err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 981         if (err)
 982                 return err;
 983         zd->dev->type = ARPHRD_ETHER;
 984         switch(*mode) {
 985                 case IW_MODE_MONITOR:
 986                         monitor = 1;
 987                         zd->dev->type = ARPHRD_IEEE80211;
 988                         /* Make sure we are no longer associated with by
 989                            setting an 'impossible' essid.
 990                            (otherwise we mess up firmware)
 991                          */
 992                         zd1201_join(zd, "\0-*#\0", 5);
 993                         /* Put port in pIBSS */
 994                 case 8: /* No pseudo-IBSS in wireless extensions (yet) */
 995                         porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
 996                         break;
 997                 case IW_MODE_ADHOC:
 998                         porttype = ZD1201_PORTTYPE_IBSS;
 999                         break;
1000                 case IW_MODE_INFRA:
1001                         porttype = ZD1201_PORTTYPE_BSS;
1002                         break;
1003                 default:
1004                         return -EINVAL;
1005         }
1006
1007         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1008         if (err)
1009                 return err;
1010         if (zd->monitor && !monitor) {
1011                         zd1201_disable(zd);
1012                         *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
1013                         memcpy(buffer+2, zd->essid, zd->essidlen);
1014                         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
1015                             buffer, IW_ESSID_MAX_SIZE+2, 1);
1016                         if (err)
1017                                 return err;
1018         }
1019         zd->monitor=monitor;
1020         /* If monitor mode is set we don't actually turn it on here since it
1021          * is done during mac reset anyway (see zd1201_mac_enable).
1022          */
1023
1024         zd1201_mac_reset(zd);
1025
1026         return 0;
1027 }
1028
1029 static int zd1201_get_mode(struct net_device *dev,
1030     struct iw_request_info *info, __u32 *mode, char *extra)
1031 {
1032         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1033         short porttype;
1034         int err;
1035
1036         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1037         if (err)
1038                 return err;
1039         switch(porttype) {
1040                 case ZD1201_PORTTYPE_IBSS:
1041                         *mode = IW_MODE_ADHOC;
1042                         break;
1043                 case ZD1201_PORTTYPE_BSS:
1044                         *mode = IW_MODE_INFRA;
1045                         break;
1046                 case ZD1201_PORTTYPE_WDS:
1047                         *mode = IW_MODE_REPEAT;
1048                         break;
1049                 case ZD1201_PORTTYPE_PSEUDOIBSS:
1050                         *mode = 8;/* No Pseudo-IBSS... */
1051                         break;
1052                 case ZD1201_PORTTYPE_AP:
1053                         *mode = IW_MODE_MASTER;
1054                         break;
1055                 default:
1056                         dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1057                             porttype);
1058                         *mode = IW_MODE_AUTO;
1059         }
1060         if (zd->monitor)
1061                 *mode = IW_MODE_MONITOR;
1062
1063         return 0;
1064 }
1065
1066 static int zd1201_get_range(struct net_device *dev,
1067     struct iw_request_info *info, struct iw_point *wrq, char *extra)
1068 {
1069         struct iw_range *range = (struct iw_range *)extra;
1070
1071         wrq->length = sizeof(struct iw_range);
1072         memset(range, 0, sizeof(struct iw_range));
1073         range->we_version_compiled = WIRELESS_EXT;
1074         range->we_version_source = WIRELESS_EXT;
1075
1076         range->max_qual.qual = 128;
1077         range->max_qual.level = 128;
1078         range->max_qual.noise = 128;
1079         range->max_qual.updated = 7;
1080
1081         range->encoding_size[0] = 5;
1082         range->encoding_size[1] = 13;
1083         range->num_encoding_sizes = 2;
1084         range->max_encoding_tokens = ZD1201_NUMKEYS;
1085
1086         range->num_bitrates = 4;
1087         range->bitrate[0] = 1000000;
1088         range->bitrate[1] = 2000000;
1089         range->bitrate[2] = 5500000;
1090         range->bitrate[3] = 11000000;
1091
1092         range->min_rts = 0;
1093         range->min_frag = ZD1201_FRAGMIN;
1094         range->max_rts = ZD1201_RTSMAX;
1095         range->min_frag = ZD1201_FRAGMAX;
1096
1097         return 0;
1098 }
1099
1100 /*      Little bit of magic here: we only get the quality if we poll
1101  *      for it, and we never get an actual request to trigger such
1102  *      a poll. Therefore we 'assume' that the user will soon ask for
1103  *      the stats after asking the bssid.
1104  */
1105 static int zd1201_get_wap(struct net_device *dev,
1106     struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1107 {
1108         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1109         unsigned char buffer[6];
1110
1111         if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1112                 /* Unfortunately the quality and noise reported is useless.
1113                    they seem to be accumulators that increase until you
1114                    read them, unless we poll on a fixed interval we can't
1115                    use them
1116                  */
1117                 /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1118                 zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1119                 /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1120                 zd->iwstats.qual.updated = 2;
1121         }
1122
1123         return zd1201_getconfig(zd,ZD1201_RID_CURRENTBSSID,ap_addr->sa_data,6);
1124 }
1125
1126 static int zd1201_set_scan(struct net_device *dev,
1127     struct iw_request_info *info, struct iw_point *srq, char *extra)
1128 {
1129         /* We do everything in get_scan */
1130         return 0;
1131 }
1132
1133 static int zd1201_get_scan(struct net_device *dev,
1134     struct iw_request_info *info, struct iw_point *srq, char *extra)
1135 {
1136         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1137         int err, i, j, enabled_save;
1138         struct iw_event iwe;
1139         char *cev = extra;
1140         char *end_buf = extra + IW_SCAN_MAX_DATA;
1141
1142         /* No scanning in AP mode */
1143         if (zd->ap)
1144                 return -EOPNOTSUPP;
1145
1146         /* Scan doesn't seem to work if disabled */
1147         enabled_save = zd->mac_enabled;
1148         zd1201_enable(zd);
1149
1150         zd->rxdatas = 0;
1151         err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE,
1152              ZD1201_INQ_SCANRESULTS, 0, 0);
1153         if (err)
1154                 return err;
1155
1156         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1157         if (!zd->rxlen)
1158                 return -EIO;
1159
1160         if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1161                 return -EIO;
1162
1163         for(i=8; i<zd->rxlen; i+=62) {
1164                 iwe.cmd = SIOCGIWAP;
1165                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1166                 memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1167                 cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_ADDR_LEN);
1168
1169                 iwe.cmd = SIOCGIWESSID;
1170                 iwe.u.data.length = zd->rxdata[i+16];
1171                 iwe.u.data.flags = 1;
1172                 cev = iwe_stream_add_point(cev, end_buf, &iwe, zd->rxdata+i+18);
1173
1174                 iwe.cmd = SIOCGIWMODE;
1175                 if (zd->rxdata[i+14]&0x01)
1176                         iwe.u.mode = IW_MODE_MASTER;
1177                 else
1178                         iwe.u.mode = IW_MODE_ADHOC;
1179                 cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_UINT_LEN);
1180
1181                 iwe.cmd = SIOCGIWFREQ;
1182                 iwe.u.freq.m = zd->rxdata[i+0];
1183                 iwe.u.freq.e = 0;
1184                 cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_FREQ_LEN);
1185
1186                 iwe.cmd = SIOCGIWRATE;
1187                 iwe.u.bitrate.fixed = 0;
1188                 iwe.u.bitrate.disabled = 0;
1189                 for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
1190                         iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
1191                         cev=iwe_stream_add_event(cev, end_buf, &iwe,
1192                             IW_EV_PARAM_LEN);
1193                 }
1194
1195                 iwe.cmd = SIOCGIWENCODE;
1196                 iwe.u.data.length = 0;
1197                 if (zd->rxdata[i+14]&0x10)
1198                         iwe.u.data.flags = IW_ENCODE_ENABLED;
1199                 else
1200                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1201                 cev = iwe_stream_add_point(cev, end_buf, &iwe, NULL);
1202
1203                 iwe.cmd = IWEVQUAL;
1204                 iwe.u.qual.qual = zd->rxdata[i+4];
1205                 iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
1206                 iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
1207                 iwe.u.qual.updated = 7;
1208                 cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_QUAL_LEN);
1209         }
1210
1211         if (!enabled_save)
1212                 zd1201_disable(zd);
1213
1214         srq->length = cev - extra;
1215         srq->flags = 0;
1216
1217         return 0;
1218 }
1219
1220 static int zd1201_set_essid(struct net_device *dev,
1221     struct iw_request_info *info, struct iw_point *data, char *essid)
1222 {
1223         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1224
1225         if (data->length > IW_ESSID_MAX_SIZE)
1226                 return -EINVAL;
1227         if (data->length < 1)
1228                 data->length = 1;
1229         zd->essidlen = data->length-1;
1230         memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1231         memcpy(zd->essid, essid, data->length);
1232         return zd1201_join(zd, zd->essid, zd->essidlen);
1233 }
1234
1235 static int zd1201_get_essid(struct net_device *dev,
1236     struct iw_request_info *info, struct iw_point *data, char *essid)
1237 {
1238         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1239
1240         memcpy(essid, zd->essid, zd->essidlen);
1241         data->flags = 1;
1242         data->length = zd->essidlen;
1243
1244         return 0;
1245 }
1246
1247 static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1248     struct iw_point *data, char *nick)
1249 {
1250         strcpy(nick, "zd1201");
1251         data->flags = 1;
1252         data->length = strlen(nick);
1253         return 0;
1254 }
1255
1256 static int zd1201_set_rate(struct net_device *dev,
1257     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1258 {
1259         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1260         short rate;
1261         int err;
1262
1263         switch (rrq->value) {
1264                 case 1000000:
1265                         rate = ZD1201_RATEB1;
1266                         break;
1267                 case 2000000:
1268                         rate = ZD1201_RATEB2;
1269                         break;
1270                 case 5500000:
1271                         rate = ZD1201_RATEB5;
1272                         break;
1273                 case 11000000:
1274                 default:
1275                         rate = ZD1201_RATEB11;
1276                         break;
1277         }
1278         if (!rrq->fixed) { /* Also enable all lower bitrates */
1279                 rate |= rate-1;
1280         }
1281
1282         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1283         if (err)
1284                 return err;
1285
1286         return zd1201_mac_reset(zd);
1287 }
1288
1289 static int zd1201_get_rate(struct net_device *dev,
1290     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1291 {
1292         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1293         short rate;
1294         int err;
1295
1296         err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1297         if (err)
1298                 return err;
1299
1300         switch(rate) {
1301                 case 1:
1302                         rrq->value = 1000000;
1303                         break;
1304                 case 2:
1305                         rrq->value = 2000000;
1306                         break;
1307                 case 5:
1308                         rrq->value = 5500000;
1309                         break;
1310                 case 11:
1311                         rrq->value = 11000000;
1312                         break;
1313                 default:
1314                         rrq->value = 0;
1315         }
1316         rrq->fixed = 0;
1317         rrq->disabled = 0;
1318
1319         return 0;
1320 }
1321
1322 static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1323     struct iw_param *rts, char *extra)
1324 {
1325         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1326         int err;
1327         short val = rts->value;
1328
1329         if (rts->disabled || !rts->fixed)
1330                 val = ZD1201_RTSMAX;
1331         if (val > ZD1201_RTSMAX)
1332                 return -EINVAL;
1333         if (val < 0)
1334                 return -EINVAL;
1335
1336         err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1337         if (err)
1338                 return err;
1339         return zd1201_mac_reset(zd);
1340 }
1341
1342 static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1343     struct iw_param *rts, char *extra)
1344 {
1345         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1346         short rtst;
1347         int err;
1348
1349         err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1350         if (err)
1351                 return err;
1352         rts->value = rtst;
1353         rts->disabled = (rts->value == ZD1201_RTSMAX);
1354         rts->fixed = 1;
1355
1356         return 0;
1357 }
1358
1359 static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1360     struct iw_param *frag, char *extra)
1361 {
1362         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1363         int err;
1364         short val = frag->value;
1365
1366         if (frag->disabled || !frag->fixed)
1367                 val = ZD1201_FRAGMAX;
1368         if (val > ZD1201_FRAGMAX)
1369                 return -EINVAL;
1370         if (val < ZD1201_FRAGMIN)
1371                 return -EINVAL;
1372         if (val & 1)
1373                 return -EINVAL;
1374         err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1375         if (err)
1376                 return err;
1377         return zd1201_mac_reset(zd);
1378 }
1379
1380 static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1381     struct iw_param *frag, char *extra)
1382 {
1383         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1384         short fragt;
1385         int err;
1386
1387         err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1388         if (err)
1389                 return err;
1390         frag->value = fragt;
1391         frag->disabled = (frag->value == ZD1201_FRAGMAX);
1392         frag->fixed = 1;
1393
1394         return 0;
1395 }
1396
1397 static int zd1201_set_retry(struct net_device *dev,
1398     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1399 {
1400         return 0;
1401 }
1402
1403 static int zd1201_get_retry(struct net_device *dev,
1404     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1405 {
1406         return 0;
1407 }
1408
1409 static int zd1201_set_encode(struct net_device *dev,
1410     struct iw_request_info *info, struct iw_point *erq, char *key)
1411 {
1412         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1413         short i;
1414         int err, rid;
1415
1416         if (erq->length > ZD1201_MAXKEYLEN)
1417                 return -EINVAL;
1418
1419         i = (erq->flags & IW_ENCODE_INDEX)-1;
1420         if (i == -1) {
1421                 err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1422                 if (err)
1423                         return err;
1424         } else {
1425                 err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1426                 if (err)
1427                         return err;
1428         }
1429
1430         if (i < 0 || i >= ZD1201_NUMKEYS)
1431                 return -EINVAL;
1432
1433         rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1434         err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1435         if (err)
1436                 return err;
1437         zd->encode_keylen[i] = erq->length;
1438         memcpy(zd->encode_keys[i], key, erq->length);
1439
1440         i=0;
1441         if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1442                 i |= 0x01;
1443                 zd->encode_enabled = 1;
1444         } else
1445                 zd->encode_enabled = 0;
1446         if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1447                 i |= 0x02;
1448                 zd->encode_restricted = 1;
1449         } else
1450                 zd->encode_restricted = 0;
1451         err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1452         if (err)
1453                 return err;
1454
1455         if (zd->encode_enabled)
1456                 i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1457         else
1458                 i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1459         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1460         if (err)
1461                 return err;
1462
1463         return zd1201_mac_reset(zd);
1464 }
1465
1466 static int zd1201_get_encode(struct net_device *dev,
1467     struct iw_request_info *info, struct iw_point *erq, char *key)
1468 {
1469         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1470         short i;
1471         int err;
1472
1473         if (zd->encode_enabled)
1474                 erq->flags = IW_ENCODE_ENABLED;
1475         else
1476                 erq->flags = IW_ENCODE_DISABLED;
1477         if (zd->encode_restricted)
1478                 erq->flags |= IW_ENCODE_RESTRICTED;
1479         else
1480                 erq->flags |= IW_ENCODE_OPEN;
1481
1482         i = (erq->flags & IW_ENCODE_INDEX) -1;
1483         if (i == -1) {
1484                 err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1485                 if (err)
1486                         return err;
1487         }
1488         if (i<0 || i>= ZD1201_NUMKEYS)
1489                 return -EINVAL;
1490
1491         erq->flags |= i+1;
1492
1493         erq->length = zd->encode_keylen[i];
1494         memcpy(key, zd->encode_keys[i], erq->length);
1495
1496         return 0;
1497 }
1498
1499 static int zd1201_set_power(struct net_device *dev,
1500     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1501 {
1502         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1503         short enabled, duration, level;
1504         int err;
1505
1506         enabled = vwrq->disabled ? 0 : 1;
1507         if (enabled) {
1508                 if (vwrq->flags & IW_POWER_PERIOD) {
1509                         duration = vwrq->value;
1510                         err = zd1201_setconfig16(zd,
1511                             ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1512                         if (err)
1513                                 return err;
1514                         goto out;
1515                 }
1516                 if (vwrq->flags & IW_POWER_TIMEOUT) {
1517                         err = zd1201_getconfig16(zd,
1518                             ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1519                         if (err)
1520                                 return err;
1521                         level = vwrq->value * 4 / duration;
1522                         if (level > 4)
1523                                 level = 4;
1524                         if (level < 0)
1525                                 level = 0;
1526                         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1527                             level);
1528                         if (err)
1529                                 return err;
1530                         goto out;
1531                 }
1532                 return -EINVAL;
1533         }
1534 out:
1535         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1536         if (err)
1537                 return err;
1538
1539         return 0;
1540 }
1541
1542 static int zd1201_get_power(struct net_device *dev,
1543     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1544 {
1545         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1546         short enabled, level, duration;
1547         int err;
1548
1549         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1550         if (err)
1551                 return err;
1552         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1553         if (err)
1554                 return err;
1555         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1556         if (err)
1557                 return err;
1558         vwrq->disabled = enabled ? 0 : 1;
1559         if (vwrq->flags & IW_POWER_TYPE) {
1560                 if (vwrq->flags & IW_POWER_PERIOD) {
1561                         vwrq->value = duration;
1562                         vwrq->flags = IW_POWER_PERIOD;
1563                 } else {
1564                         vwrq->value = duration * level / 4;
1565                         vwrq->flags = IW_POWER_TIMEOUT;
1566                 }
1567         }
1568         if (vwrq->flags & IW_POWER_MODE) {
1569                 if (enabled && level)
1570                         vwrq->flags = IW_POWER_UNICAST_R;
1571                 else
1572                         vwrq->flags = IW_POWER_ALL_R;
1573         }
1574
1575         return 0;
1576 }
1577
1578
1579 static const iw_handler zd1201_iw_handler[] =
1580 {
1581         (iw_handler) zd1201_config_commit,      /* SIOCSIWCOMMIT */
1582         (iw_handler) zd1201_get_name,           /* SIOCGIWNAME */
1583         (iw_handler) NULL,                      /* SIOCSIWNWID */
1584         (iw_handler) NULL,                      /* SIOCGIWNWID */
1585         (iw_handler) zd1201_set_freq,           /* SIOCSIWFREQ */
1586         (iw_handler) zd1201_get_freq,           /* SIOCGIWFREQ */
1587         (iw_handler) zd1201_set_mode,           /* SIOCSIWMODE */
1588         (iw_handler) zd1201_get_mode,           /* SIOCGIWMODE */
1589         (iw_handler) NULL,                      /* SIOCSIWSENS */
1590         (iw_handler) NULL,                      /* SIOCGIWSENS */
1591         (iw_handler) NULL,                      /* SIOCSIWRANGE */
1592         (iw_handler) zd1201_get_range,           /* SIOCGIWRANGE */
1593         (iw_handler) NULL,                      /* SIOCSIWPRIV */
1594         (iw_handler) NULL,                      /* SIOCGIWPRIV */
1595         (iw_handler) NULL,                      /* SIOCSIWSTATS */
1596         (iw_handler) NULL,                      /* SIOCGIWSTATS */
1597         (iw_handler) NULL,                      /* SIOCSIWSPY */
1598         (iw_handler) NULL,                      /* SIOCGIWSPY */
1599         (iw_handler) NULL,                      /* -- hole -- */
1600         (iw_handler) NULL,                      /* -- hole -- */
1601         (iw_handler) NULL/*zd1201_set_wap*/,            /* SIOCSIWAP */
1602         (iw_handler) zd1201_get_wap,            /* SIOCGIWAP */
1603         (iw_handler) NULL,                      /* -- hole -- */
1604         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
1605         (iw_handler) zd1201_set_scan,           /* SIOCSIWSCAN */
1606         (iw_handler) zd1201_get_scan,           /* SIOCGIWSCAN */
1607         (iw_handler) zd1201_set_essid,          /* SIOCSIWESSID */
1608         (iw_handler) zd1201_get_essid,          /* SIOCGIWESSID */
1609         (iw_handler) NULL,                      /* SIOCSIWNICKN */
1610         (iw_handler) zd1201_get_nick,           /* SIOCGIWNICKN */
1611         (iw_handler) NULL,                      /* -- hole -- */
1612         (iw_handler) NULL,                      /* -- hole -- */
1613         (iw_handler) zd1201_set_rate,           /* SIOCSIWRATE */
1614         (iw_handler) zd1201_get_rate,           /* SIOCGIWRATE */
1615         (iw_handler) zd1201_set_rts,            /* SIOCSIWRTS */
1616         (iw_handler) zd1201_get_rts,            /* SIOCGIWRTS */
1617         (iw_handler) zd1201_set_frag,           /* SIOCSIWFRAG */
1618         (iw_handler) zd1201_get_frag,           /* SIOCGIWFRAG */
1619         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
1620         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
1621         (iw_handler) zd1201_set_retry,          /* SIOCSIWRETRY */
1622         (iw_handler) zd1201_get_retry,          /* SIOCGIWRETRY */
1623         (iw_handler) zd1201_set_encode,         /* SIOCSIWENCODE */
1624         (iw_handler) zd1201_get_encode,         /* SIOCGIWENCODE */
1625         (iw_handler) zd1201_set_power,          /* SIOCSIWPOWER */
1626         (iw_handler) zd1201_get_power,          /* SIOCGIWPOWER */
1627 };
1628
1629 static int zd1201_set_hostauth(struct net_device *dev,
1630     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1631 {
1632         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1633         int err;
1634
1635         if (!zd->ap)
1636                 return -EOPNOTSUPP;
1637
1638         err = zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1639         if (err)
1640                 return err;
1641         return 0;
1642 }
1643
1644 static int zd1201_get_hostauth(struct net_device *dev,
1645     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1646 {
1647         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1648         short hostauth;
1649         int err;
1650
1651         if (!zd->ap)
1652                 return -EOPNOTSUPP;
1653
1654         err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1655         if (err)
1656                 return err;
1657         rrq->value = hostauth;
1658         rrq->fixed = 1;
1659
1660         return 0;
1661 }
1662
1663 static int zd1201_auth_sta(struct net_device *dev,
1664     struct iw_request_info *info, struct sockaddr *sta, char *extra)
1665 {
1666         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1667         unsigned char buffer[10];
1668
1669         if (!zd->ap)
1670                 return -EOPNOTSUPP;
1671
1672         memcpy(buffer, sta->sa_data, ETH_ALEN);
1673         *(short*)(buffer+6) = 0;        /* 0==success, 1==failure */
1674         *(short*)(buffer+8) = 0;
1675
1676         return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1677 }
1678
1679 static int zd1201_set_maxassoc(struct net_device *dev,
1680     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1681 {
1682         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1683         int err;
1684
1685         if (!zd->ap)
1686                 return -EOPNOTSUPP;
1687
1688         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1689         if (err)
1690                 return err;
1691         return 0;
1692 }
1693
1694 static int zd1201_get_maxassoc(struct net_device *dev,
1695     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1696 {
1697         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1698         short maxassoc;
1699         int err;
1700
1701         if (!zd->ap)
1702                 return -EOPNOTSUPP;
1703
1704         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1705         if (err)
1706                 return err;
1707         rrq->value = maxassoc;
1708         rrq->fixed = 1;
1709
1710         return 0;
1711 }
1712
1713 static const iw_handler zd1201_private_handler[] = {
1714         (iw_handler) zd1201_set_hostauth,       /* ZD1201SIWHOSTAUTH */
1715         (iw_handler) zd1201_get_hostauth,       /* ZD1201GIWHOSTAUTH */
1716         (iw_handler) zd1201_auth_sta,           /* ZD1201SIWAUTHSTA */
1717         (iw_handler) NULL,                      /* nothing to get */
1718         (iw_handler) zd1201_set_maxassoc,       /* ZD1201SIMAXASSOC */
1719         (iw_handler) zd1201_get_maxassoc,       /* ZD1201GIMAXASSOC */
1720 };
1721
1722 static const struct iw_priv_args zd1201_private_args[] = {
1723         { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1724             IW_PRIV_TYPE_NONE, "sethostauth" },
1725         { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1726             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1727         { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1728             IW_PRIV_TYPE_NONE, "authstation" },
1729         { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1730             IW_PRIV_TYPE_NONE, "setmaxassoc" },
1731         { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1732             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1733 };
1734
1735 static const struct iw_handler_def zd1201_iw_handlers = {
1736         .num_standard           = sizeof(zd1201_iw_handler)/sizeof(iw_handler),
1737         .num_private            = sizeof(zd1201_private_handler)/sizeof(iw_handler),
1738         .num_private_args       = sizeof(zd1201_private_args)/sizeof(struct iw_priv_args),
1739         .standard               = (iw_handler *)zd1201_iw_handler,
1740         .private                = (iw_handler *)zd1201_private_handler,
1741         .private_args           = (struct iw_priv_args *) zd1201_private_args,
1742 };
1743
1744 static int zd1201_probe(struct usb_interface *interface,
1745                         const struct usb_device_id *id)
1746 {
1747         struct zd1201 *zd;
1748         struct usb_device *usb;
1749         int i, err;
1750         short porttype;
1751         char buf[IW_ESSID_MAX_SIZE+2];
1752
1753         usb = interface_to_usbdev(interface);
1754
1755         zd = kmalloc(sizeof(struct zd1201), GFP_KERNEL);
1756         if (!zd) {
1757                 return -ENOMEM;
1758         }
1759         memset(zd, 0, sizeof(struct zd1201));
1760         zd->ap = ap;
1761         zd->usb = usb;
1762         zd->removed = 0;
1763         init_waitqueue_head(&zd->rxdataq);
1764         INIT_HLIST_HEAD(&zd->fraglist);
1765
1766         err = zd1201_fw_upload(usb, zd->ap);
1767         if (err) {
1768                 dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
1769                 goto err_zd;
1770         }
1771
1772         zd->endp_in = 1;
1773         zd->endp_out = 1;
1774         zd->endp_out2 = 2;
1775         zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1776         zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1777         if (!zd->rx_urb || !zd->tx_urb)
1778                 goto err_zd;
1779
1780         for(i = 0; i<100; i++)
1781                 udelay(1000);
1782
1783         err = zd1201_drvr_start(zd);
1784         if (err)
1785                 goto err_zd;
1786
1787         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
1788         if (err)
1789                 goto err_start;
1790
1791         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
1792             ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
1793         if (err)
1794                 goto err_start;
1795
1796         zd->dev = alloc_etherdev(0);
1797         if (!zd->dev)
1798                 goto err_start;
1799
1800         zd->dev->priv = zd;
1801         zd->dev->open = zd1201_net_open;
1802         zd->dev->stop = zd1201_net_stop;
1803         zd->dev->get_stats = zd1201_get_stats;
1804         zd->dev->get_wireless_stats = zd1201_get_wireless_stats;
1805         zd->dev->wireless_handlers =
1806             (struct iw_handler_def *)&zd1201_iw_handlers;
1807         zd->dev->hard_start_xmit = zd1201_hard_start_xmit;
1808         zd->dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
1809         zd->dev->tx_timeout = zd1201_tx_timeout;
1810         zd->dev->set_multicast_list = zd1201_set_multicast;
1811         zd->dev->set_mac_address = zd1201_set_mac_address;
1812         strcpy(zd->dev->name, "wlan%d");
1813
1814         err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR,
1815             zd->dev->dev_addr, zd->dev->addr_len);
1816         if (err)
1817                 goto err_net;
1818
1819         /* Set wildcard essid to match zd->essid */
1820         *(__le16 *)buf = cpu_to_le16(0);
1821         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
1822             IW_ESSID_MAX_SIZE+2, 1);
1823         if (err)
1824                 goto err_net;
1825
1826         if (zd->ap)
1827                 porttype = ZD1201_PORTTYPE_AP;
1828         else
1829                 porttype = ZD1201_PORTTYPE_BSS;
1830         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1831         if (err)
1832                 goto err_net;
1833
1834         err = register_netdev(zd->dev);
1835         if (err)
1836                 goto err_net;
1837         dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
1838             zd->dev->name);
1839
1840         usb_set_intfdata(interface, zd);
1841         return 0;
1842
1843 err_net:
1844         free_netdev(zd->dev);
1845 err_start:
1846         /* Leave the device in reset state */
1847         zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
1848 err_zd:
1849         if (zd->tx_urb)
1850                 usb_free_urb(zd->tx_urb);
1851         if (zd->rx_urb)
1852                 usb_free_urb(zd->rx_urb);
1853         kfree(zd);
1854         return err;
1855 }
1856
1857 static void zd1201_disconnect(struct usb_interface *interface)
1858 {
1859         struct zd1201 *zd=(struct zd1201 *)usb_get_intfdata(interface);
1860         struct hlist_node *node, *node2;
1861         struct zd1201_frag *frag;
1862
1863         if (!zd)
1864                 return;
1865         usb_set_intfdata(interface, NULL);
1866         if (zd->dev) {
1867                 unregister_netdev(zd->dev);
1868                 free_netdev(zd->dev);
1869         }
1870
1871         hlist_for_each_entry_safe(frag, node, node2, &zd->fraglist, fnode) {
1872                 hlist_del_init(&frag->fnode);
1873                 kfree_skb(frag->skb);
1874                 kfree(frag);
1875         }
1876
1877         if (zd->tx_urb) {
1878                 usb_kill_urb(zd->tx_urb);
1879                 usb_free_urb(zd->tx_urb);
1880         }
1881         if (zd->rx_urb) {
1882                 usb_kill_urb(zd->rx_urb);
1883                 usb_free_urb(zd->rx_urb);
1884         }
1885         kfree(zd);
1886 }
1887
1888 #ifdef CONFIG_PM
1889
1890 static int zd1201_suspend(struct usb_interface *interface,
1891                            pm_message_t message)
1892 {
1893         struct zd1201 *zd = usb_get_intfdata(interface);
1894
1895         netif_device_detach(zd->dev);
1896
1897         zd->was_enabled = zd->mac_enabled;
1898
1899         if (zd->was_enabled)
1900                 return zd1201_disable(zd);
1901         else
1902                 return 0;
1903 }
1904
1905 static int zd1201_resume(struct usb_interface *interface)
1906 {
1907         struct zd1201 *zd = usb_get_intfdata(interface);
1908
1909         if (!zd || !zd->dev)
1910                 return -ENODEV;
1911
1912         netif_device_attach(zd->dev);
1913
1914         if (zd->was_enabled)
1915                 return zd1201_enable(zd);
1916         else
1917                 return 0;
1918 }
1919
1920 #else
1921
1922 #define zd1201_suspend NULL
1923 #define zd1201_resume  NULL
1924
1925 #endif
1926
1927 static struct usb_driver zd1201_usb = {
1928         .owner = THIS_MODULE,
1929         .name = "zd1201",
1930         .probe = zd1201_probe,
1931         .disconnect = zd1201_disconnect,
1932         .id_table = zd1201_table,
1933         .suspend = zd1201_suspend,
1934         .resume = zd1201_resume,
1935 };
1936
1937 static int __init zd1201_init(void)
1938 {
1939         return usb_register(&zd1201_usb);
1940 }
1941
1942 static void __exit zd1201_cleanup(void)
1943 {
1944         usb_deregister(&zd1201_usb);
1945 }
1946
1947 module_init(zd1201_init);
1948 module_exit(zd1201_cleanup);