drivers/net/wireless/zydas/zd1201.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *      Driver for ZyDAS zd1201 based wireless USB devices.
   4  *
   5  *      Copyright (c) 2004, 2005 Jeroen Vreeken (pe1rxq@amsat.org)
   6  *
   7  *      Parts of this driver have been derived from a wlan-ng version
   8  *      modified by ZyDAS. They also made documentation available, thanks!
   9  *      Copyright (C) 1999 AbsoluteValue Systems, Inc.  All Rights Reserved.
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/usb.h>
  14 #include <linux/slab.h>
  15 #include <linux/netdevice.h>
  16 #include <linux/etherdevice.h>
  17 #include <linux/wireless.h>
  18 #include <net/cfg80211.h>
  19 #include <net/iw_handler.h>
  20 #include <linux/string.h>
  21 #include <linux/if_arp.h>
  22 #include <linux/firmware.h>
  23 #include "zd1201.h"
  24
  25 static const struct usb_device_id zd1201_table[] = {
  26         {USB_DEVICE(0x0586, 0x3400)}, /* Peabird Wireless USB Adapter */
  27         {USB_DEVICE(0x0ace, 0x1201)}, /* ZyDAS ZD1201 Wireless USB Adapter */
  28         {USB_DEVICE(0x050d, 0x6051)}, /* Belkin F5D6051 usb  adapter */
  29         {USB_DEVICE(0x0db0, 0x6823)}, /* MSI UB11B usb  adapter */
  30         {USB_DEVICE(0x1044, 0x8004)}, /* Gigabyte GN-WLBZ101 */
  31         {USB_DEVICE(0x1044, 0x8005)}, /* GIGABYTE GN-WLBZ201 usb adapter */
  32         {}
  33 };
  34
  35 static int ap;  /* Are we an AP or a normal station? */
  36
  37 #define ZD1201_VERSION  "0.15"
  38
  39 MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>");
  40 MODULE_DESCRIPTION("Driver for ZyDAS ZD1201 based USB Wireless adapters");
  41 MODULE_VERSION(ZD1201_VERSION);
  42 MODULE_LICENSE("GPL");
  43 module_param(ap, int, 0);
  44 MODULE_PARM_DESC(ap, "If non-zero Access Point firmware will be loaded");
  45 MODULE_DEVICE_TABLE(usb, zd1201_table);
  46
  47
  48 static int zd1201_fw_upload(struct usb_device *dev, int apfw)
  49 {
  50         const struct firmware *fw_entry;
  51         const char *data;
  52         unsigned long len;
  53         int err;
  54         unsigned char ret;
  55         char *buf;
  56         char *fwfile;
  57
  58         if (apfw)
  59                 fwfile = "zd1201-ap.fw";
  60         else
  61                 fwfile = "zd1201.fw";
  62
  63         err = request_firmware(&fw_entry, fwfile, &dev->dev);
  64         if (err) {
  65                 dev_err(&dev->dev, "Failed to load %s firmware file!\n", fwfile);
  66                 dev_err(&dev->dev, "Make sure the hotplug firmware loader is installed.\n");
  67                 dev_err(&dev->dev, "Goto http://linux-lc100020.sourceforge.net for more info.\n");
  68                 return err;
  69         }
  70
  71         data = fw_entry->data;
  72         len = fw_entry->size;
  73
  74         buf = kmalloc(1024, GFP_ATOMIC);
  75         if (!buf) {
  76                 err = -ENOMEM;
  77                 goto exit;
  78         }
  79
  80         while (len > 0) {
  81                 int translen = (len > 1024) ? 1024 : len;
  82                 memcpy(buf, data, translen);
  83
  84                 err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0,
  85                     USB_DIR_OUT | 0x40, 0, 0, buf, translen,
  86                     ZD1201_FW_TIMEOUT);
  87                 if (err < 0)
  88                         goto exit;
  89
  90                 len -= translen;
  91                 data += translen;
  92         }
  93
  94         err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0x2,
  95             USB_DIR_OUT | 0x40, 0, 0, NULL, 0, ZD1201_FW_TIMEOUT);
  96         if (err < 0)
  97                 goto exit;
  98
  99         err = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 0x4,
 100             USB_DIR_IN | 0x40, 0, 0, buf, sizeof(ret), ZD1201_FW_TIMEOUT);
 101         if (err < 0)
 102                 goto exit;
 103
 104         memcpy(&ret, buf, sizeof(ret));
 105
 106         if (ret & 0x80) {
 107                 err = -EIO;
 108                 goto exit;
 109         }
 110
 111         err = 0;
 112 exit:
 113         kfree(buf);
 114         release_firmware(fw_entry);
 115         return err;
 116 }
 117
 118 MODULE_FIRMWARE("zd1201-ap.fw");
 119 MODULE_FIRMWARE("zd1201.fw");
 120
 121 static void zd1201_usbfree(struct urb *urb)
 122 {
 123         struct zd1201 *zd = urb->context;
 124
 125         switch(urb->status) {
 126                 case -EILSEQ:
 127                 case -ENODEV:
 128                 case -ETIME:
 129                 case -ENOENT:
 130                 case -EPIPE:
 131                 case -EOVERFLOW:
 132                 case -ESHUTDOWN:
 133                         dev_warn(&zd->usb->dev, "%s: urb failed: %d\n",
 134                             zd->dev->name, urb->status);
 135         }
 136
 137         kfree(urb->transfer_buffer);
 138         usb_free_urb(urb);
 139 }
 140
 141 /* cmdreq message:
 142         u32 type
 143         u16 cmd
 144         u16 parm0
 145         u16 parm1
 146         u16 parm2
 147         u8  pad[4]
 148
 149         total: 4 + 2 + 2 + 2 + 2 + 4 = 16
 150 */
 151 static int zd1201_docmd(struct zd1201 *zd, int cmd, int parm0,
 152                         int parm1, int parm2)
 153 {
 154         unsigned char *command;
 155         int ret;
 156         struct urb *urb;
 157
 158         command = kmalloc(16, GFP_ATOMIC);
 159         if (!command)
 160                 return -ENOMEM;
 161
 162         *((__le32*)command) = cpu_to_le32(ZD1201_USB_CMDREQ);
 163         *((__le16*)&command[4]) = cpu_to_le16(cmd);
 164         *((__le16*)&command[6]) = cpu_to_le16(parm0);
 165         *((__le16*)&command[8]) = cpu_to_le16(parm1);
 166         *((__le16*)&command[10])= cpu_to_le16(parm2);
 167
 168         urb = usb_alloc_urb(0, GFP_ATOMIC);
 169         if (!urb) {
 170                 kfree(command);
 171                 return -ENOMEM;
 172         }
 173         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 174                           command, 16, zd1201_usbfree, zd);
 175         ret = usb_submit_urb(urb, GFP_ATOMIC);
 176         if (ret) {
 177                 kfree(command);
 178                 usb_free_urb(urb);
 179         }
 180
 181         return ret;
 182 }
 183
 184 /* Callback after sending out a packet */
 185 static void zd1201_usbtx(struct urb *urb)
 186 {
 187         struct zd1201 *zd = urb->context;
 188         netif_wake_queue(zd->dev);
 189 }
 190
 191 /* Incoming data */
 192 static void zd1201_usbrx(struct urb *urb)
 193 {
 194         struct zd1201 *zd = urb->context;
 195         int free = 0;
 196         unsigned char *data = urb->transfer_buffer;
 197         struct sk_buff *skb;
 198         unsigned char type;
 199
 200         if (!zd)
 201                 return;
 202
 203         switch(urb->status) {
 204                 case -EILSEQ:
 205                 case -ENODEV:
 206                 case -ETIME:
 207                 case -ENOENT:
 208                 case -EPIPE:
 209                 case -EOVERFLOW:
 210                 case -ESHUTDOWN:
 211                         dev_warn(&zd->usb->dev, "%s: rx urb failed: %d\n",
 212                             zd->dev->name, urb->status);
 213                         free = 1;
 214                         goto exit;
 215         }
 216
 217         if (urb->status != 0 || urb->actual_length == 0)
 218                 goto resubmit;
 219
 220         type = data[0];
 221         if (type == ZD1201_PACKET_EVENTSTAT || type == ZD1201_PACKET_RESOURCE) {
 222                 memcpy(zd->rxdata, data, urb->actual_length);
 223                 zd->rxlen = urb->actual_length;
 224                 zd->rxdatas = 1;
 225                 wake_up(&zd->rxdataq);
 226         }
 227         /* Info frame */
 228         if (type == ZD1201_PACKET_INQUIRE) {
 229                 int i = 0;
 230                 unsigned short infotype, copylen;
 231                 infotype = le16_to_cpu(*(__le16*)&data[6]);
 232
 233                 if (infotype == ZD1201_INF_LINKSTATUS) {
 234                         short linkstatus;
 235
 236                         linkstatus = le16_to_cpu(*(__le16*)&data[8]);
 237                         switch(linkstatus) {
 238                                 case 1:
 239                                         netif_carrier_on(zd->dev);
 240                                         break;
 241                                 case 2:
 242                                         netif_carrier_off(zd->dev);
 243                                         break;
 244                                 case 3:
 245                                         netif_carrier_off(zd->dev);
 246                                         break;
 247                                 case 4:
 248                                         netif_carrier_on(zd->dev);
 249                                         break;
 250                                 default:
 251                                         netif_carrier_off(zd->dev);
 252                         }
 253                         goto resubmit;
 254                 }
 255                 if (infotype == ZD1201_INF_ASSOCSTATUS) {
 256                         short status = le16_to_cpu(*(__le16*)(data+8));
 257                         int event;
 258                         union iwreq_data wrqu;
 259
 260                         switch (status) {
 261                                 case ZD1201_ASSOCSTATUS_STAASSOC:
 262                                 case ZD1201_ASSOCSTATUS_REASSOC:
 263                                         event = IWEVREGISTERED;
 264                                         break;
 265                                 case ZD1201_ASSOCSTATUS_DISASSOC:
 266                                 case ZD1201_ASSOCSTATUS_ASSOCFAIL:
 267                                 case ZD1201_ASSOCSTATUS_AUTHFAIL:
 268                                 default:
 269                                         event = IWEVEXPIRED;
 270                         }
 271                         memcpy(wrqu.addr.sa_data, data+10, ETH_ALEN);
 272                         wrqu.addr.sa_family = ARPHRD_ETHER;
 273
 274                         /* Send event to user space */
 275                         wireless_send_event(zd->dev, event, &wrqu, NULL);
 276
 277                         goto resubmit;
 278                 }
 279                 if (infotype == ZD1201_INF_AUTHREQ) {
 280                         union iwreq_data wrqu;
 281
 282                         memcpy(wrqu.addr.sa_data, data+8, ETH_ALEN);
 283                         wrqu.addr.sa_family = ARPHRD_ETHER;
 284                         /* There isn't a event that trully fits this request.
 285                            We assume that userspace will be smart enough to
 286                            see a new station being expired and sends back a
 287                            authstation ioctl to authorize it. */
 288                         wireless_send_event(zd->dev, IWEVEXPIRED, &wrqu, NULL);
 289                         goto resubmit;
 290                 }
 291                 /* Other infotypes are handled outside this handler */
 292                 zd->rxlen = 0;
 293                 while (i < urb->actual_length) {
 294                         copylen = le16_to_cpu(*(__le16*)&data[i+2]);
 295                         /* Sanity check, sometimes we get junk */
 296                         if (copylen+zd->rxlen > sizeof(zd->rxdata))
 297                                 break;
 298                         memcpy(zd->rxdata+zd->rxlen, data+i+4, copylen);
 299                         zd->rxlen += copylen;
 300                         i += 64;
 301                 }
 302                 if (i >= urb->actual_length) {
 303                         zd->rxdatas = 1;
 304                         wake_up(&zd->rxdataq);
 305                 }
 306                 goto  resubmit;
 307         }
 308         /* Actual data */
 309         if (data[urb->actual_length-1] == ZD1201_PACKET_RXDATA) {
 310                 int datalen = urb->actual_length-1;
 311                 unsigned short len, fc, seq;
 312
 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                         skb_put_data(skb, &data[datalen - 16], 2);
 326                         skb_put_data(skb, &data[datalen - 2], 2);
 327                         skb_put_data(skb, &data[datalen - 14], 6);
 328                         skb_put_data(skb, &data[datalen - 22], 6);
 329                         skb_put_data(skb, &data[datalen - 8], 6);
 330                         skb_put_data(skb, &data[datalen - 24], 2);
 331                         skb_put_data(skb, data, len);
 332                         skb->protocol = eth_type_trans(skb, zd->dev);
 333                         zd->dev->stats.rx_packets++;
 334                         zd->dev->stats.rx_bytes += skb->len;
 335                         netif_rx(skb);
 336                         goto resubmit;
 337                 }
 338
 339                 if ((seq & IEEE80211_SCTL_FRAG) ||
 340                     (fc & IEEE80211_FCTL_MOREFRAGS)) {
 341                         struct zd1201_frag *frag = NULL;
 342                         char *ptr;
 343
 344                         if (datalen<14)
 345                                 goto resubmit;
 346                         if ((seq & IEEE80211_SCTL_FRAG) == 0) {
 347                                 frag = kmalloc(sizeof(*frag), GFP_ATOMIC);
 348                                 if (!frag)
 349                                         goto resubmit;
 350                                 skb = dev_alloc_skb(IEEE80211_MAX_DATA_LEN +14+2);
 351                                 if (!skb) {
 352                                         kfree(frag);
 353                                         goto resubmit;
 354                                 }
 355                                 frag->skb = skb;
 356                                 frag->seq = seq & IEEE80211_SCTL_SEQ;
 357                                 skb_reserve(skb, 2);
 358                                 skb_put_data(skb, &data[datalen - 14], 12);
 359                                 skb_put_data(skb, &data[6], 2);
 360                                 skb_put_data(skb, data + 8, len);
 361                                 hlist_add_head(&frag->fnode, &zd->fraglist);
 362                                 goto resubmit;
 363                         }
 364                         hlist_for_each_entry(frag, &zd->fraglist, fnode)
 365                                 if (frag->seq == (seq&IEEE80211_SCTL_SEQ))
 366                                         break;
 367                         if (!frag)
 368                                 goto resubmit;
 369                         skb = frag->skb;
 370                         ptr = skb_put(skb, len);
 371                         if (ptr)
 372                                 memcpy(ptr, data+8, len);
 373                         if (fc & IEEE80211_FCTL_MOREFRAGS)
 374                                 goto resubmit;
 375                         hlist_del_init(&frag->fnode);
 376                         kfree(frag);
 377                 } else {
 378                         if (datalen<14)
 379                                 goto resubmit;
 380                         skb = dev_alloc_skb(len + 14 + 2);
 381                         if (!skb)
 382                                 goto resubmit;
 383                         skb_reserve(skb, 2);
 384                         skb_put_data(skb, &data[datalen - 14], 12);
 385                         skb_put_data(skb, &data[6], 2);
 386                         skb_put_data(skb, data + 8, len);
 387                 }
 388                 skb->protocol = eth_type_trans(skb, zd->dev);
 389                 zd->dev->stats.rx_packets++;
 390                 zd->dev->stats.rx_bytes += skb->len;
 391                 netif_rx(skb);
 392         }
 393 resubmit:
 394         memset(data, 0, ZD1201_RXSIZE);
 395
 396         urb->status = 0;
 397         urb->dev = zd->usb;
 398         if(usb_submit_urb(urb, GFP_ATOMIC))
 399                 free = 1;
 400
 401 exit:
 402         if (free) {
 403                 zd->rxlen = 0;
 404                 zd->rxdatas = 1;
 405                 wake_up(&zd->rxdataq);
 406                 kfree(urb->transfer_buffer);
 407         }
 408 }
 409
 410 static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
 411         unsigned int riddatalen)
 412 {
 413         int err;
 414         int i = 0;
 415         int code;
 416         int rid_fid;
 417         int length;
 418         unsigned char *pdata;
 419
 420         zd->rxdatas = 0;
 421         err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
 422         if (err)
 423                 return err;
 424
 425         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 426         if (!zd->rxlen)
 427                 return -EIO;
 428
 429         code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
 430         rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
 431         length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
 432         if (length > zd->rxlen)
 433                 length = zd->rxlen-6;
 434
 435         /* If access bit is not on, then error */
 436         if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
 437                 return -EINVAL;
 438
 439         /* Not enough buffer for allocating data */
 440         if (riddatalen != (length - 4)) {
 441                 dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
 442                     riddatalen, zd->rxlen, length, rid, rid_fid);
 443                 return -ENODATA;
 444         }
 445
 446         zd->rxdatas = 0;
 447         /* Issue SetRxRid commnd */
 448         err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
 449         if (err)
 450                 return err;
 451
 452         /* Receive RID record from resource packets */
 453         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 454         if (!zd->rxlen)
 455                 return -EIO;
 456
 457         if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
 458                 dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
 459                     zd->rxdata[zd->rxlen-1]);
 460                 return -EINVAL;
 461         }
 462
 463         /* Set the data pointer and received data length */
 464         pdata = zd->rxdata;
 465         length = zd->rxlen;
 466
 467         do {
 468                 int actual_length;
 469
 470                 actual_length = (length > 64) ? 64 : length;
 471
 472                 if (pdata[0] != 0x3) {
 473                         dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
 474                             pdata[0]);
 475                         return -EINVAL;
 476                 }
 477
 478                 if (actual_length != 64) {
 479                         /* Trim the last packet type byte */
 480                         actual_length--;
 481                 }
 482
 483                 /* Skip the 4 bytes header (RID length and RID) */
 484                 if (i == 0) {
 485                         pdata += 8;
 486                         actual_length -= 8;
 487                 } else {
 488                         pdata += 4;
 489                         actual_length -= 4;
 490                 }
 491
 492                 memcpy(riddata, pdata, actual_length);
 493                 riddata += actual_length;
 494                 pdata += actual_length;
 495                 length -= 64;
 496                 i++;
 497         } while (length > 0);
 498
 499         return 0;
 500 }
 501
 502 /*
 503  *      resreq:
 504  *              byte    type
 505  *              byte    sequence
 506  *              u16     reserved
 507  *              byte    data[12]
 508  *      total: 16
 509  */
 510 static int zd1201_setconfig(struct zd1201 *zd, int rid, void *buf, int len, int wait)
 511 {
 512         int err;
 513         unsigned char *request;
 514         int reqlen;
 515         char seq=0;
 516         struct urb *urb;
 517         gfp_t gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
 518
 519         len += 4;                       /* first 4 are for header */
 520
 521         zd->rxdatas = 0;
 522         zd->rxlen = 0;
 523         for (seq=0; len > 0; seq++) {
 524                 request = kmalloc(16, gfp_mask);
 525                 if (!request)
 526                         return -ENOMEM;
 527                 urb = usb_alloc_urb(0, gfp_mask);
 528                 if (!urb) {
 529                         kfree(request);
 530                         return -ENOMEM;
 531                 }
 532                 memset(request, 0, 16);
 533                 reqlen = len>12 ? 12 : len;
 534                 request[0] = ZD1201_USB_RESREQ;
 535                 request[1] = seq;
 536                 request[2] = 0;
 537                 request[3] = 0;
 538                 if (request[1] == 0) {
 539                         /* add header */
 540                         *(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
 541                         *(__le16*)&request[6] = cpu_to_le16(rid);
 542                         memcpy(request+8, buf, reqlen-4);
 543                         buf += reqlen-4;
 544                 } else {
 545                         memcpy(request+4, buf, reqlen);
 546                         buf += reqlen;
 547                 }
 548
 549                 len -= reqlen;
 550
 551                 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
 552                     zd->endp_out2), request, 16, zd1201_usbfree, zd);
 553                 err = usb_submit_urb(urb, gfp_mask);
 554                 if (err)
 555                         goto err;
 556         }
 557
 558         request = kmalloc(16, gfp_mask);
 559         if (!request)
 560                 return -ENOMEM;
 561         urb = usb_alloc_urb(0, gfp_mask);
 562         if (!urb) {
 563                 kfree(request);
 564                 return -ENOMEM;
 565         }
 566         *((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
 567         *((__le16*)&request[4]) =
 568             cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
 569         *((__le16*)&request[6]) = cpu_to_le16(rid);
 570         *((__le16*)&request[8]) = cpu_to_le16(0);
 571         *((__le16*)&request[10]) = cpu_to_le16(0);
 572         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 573              request, 16, zd1201_usbfree, zd);
 574         err = usb_submit_urb(urb, gfp_mask);
 575         if (err)
 576                 goto err;
 577
 578         if (wait) {
 579                 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 580                 if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
 581                         dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
 582                 }
 583         }
 584
 585         return 0;
 586 err:
 587         kfree(request);
 588         usb_free_urb(urb);
 589         return err;
 590 }
 591
 592 static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
 593 {
 594         int err;
 595         __le16 zdval;
 596
 597         err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
 598         if (err)
 599                 return err;
 600         *val = le16_to_cpu(zdval);
 601         return 0;
 602 }
 603
 604 static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
 605 {
 606         __le16 zdval = cpu_to_le16(val);
 607         return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
 608 }
 609
 610 static int zd1201_drvr_start(struct zd1201 *zd)
 611 {
 612         int err, i;
 613         short max;
 614         __le16 zdmax;
 615         unsigned char *buffer;
 616
 617         buffer = kzalloc(ZD1201_RXSIZE, GFP_KERNEL);
 618         if (!buffer)
 619                 return -ENOMEM;
 620
 621         usb_fill_bulk_urb(zd->rx_urb, zd->usb,
 622             usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
 623             zd1201_usbrx, zd);
 624
 625         err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
 626         if (err)
 627                 goto err_buffer;
 628
 629         err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
 630         if (err)
 631                 goto err_urb;
 632
 633         err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
 634             sizeof(__le16));
 635         if (err)
 636                 goto err_urb;
 637
 638         max = le16_to_cpu(zdmax);
 639         for (i=0; i<max; i++) {
 640                 err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
 641                 if (err)
 642                         goto err_urb;
 643         }
 644
 645         return 0;
 646
 647 err_urb:
 648         usb_kill_urb(zd->rx_urb);
 649         return err;
 650 err_buffer:
 651         kfree(buffer);
 652         return err;
 653 }
 654
 655 /*      Magic alert: The firmware doesn't seem to like the MAC state being
 656  *      toggled in promisc (aka monitor) mode.
 657  *      (It works a number of times, but will halt eventually)
 658  *      So we turn it of before disabling and on after enabling if needed.
 659  */
 660 static int zd1201_enable(struct zd1201 *zd)
 661 {
 662         int err;
 663
 664         if (zd->mac_enabled)
 665                 return 0;
 666
 667         err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
 668         if (!err)
 669                 zd->mac_enabled = 1;
 670
 671         if (zd->monitor)
 672                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
 673
 674         return err;
 675 }
 676
 677 static int zd1201_disable(struct zd1201 *zd)
 678 {
 679         int err;
 680
 681         if (!zd->mac_enabled)
 682                 return 0;
 683         if (zd->monitor) {
 684                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 685                 if (err)
 686                         return err;
 687         }
 688
 689         err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
 690         if (!err)
 691                 zd->mac_enabled = 0;
 692         return err;
 693 }
 694
 695 static int zd1201_mac_reset(struct zd1201 *zd)
 696 {
 697         if (!zd->mac_enabled)
 698                 return 0;
 699         zd1201_disable(zd);
 700         return zd1201_enable(zd);
 701 }
 702
 703 static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
 704 {
 705         int err, val;
 706         char buf[IW_ESSID_MAX_SIZE+2];
 707
 708         err = zd1201_disable(zd);
 709         if (err)
 710                 return err;
 711
 712         val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
 713         val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
 714         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
 715         if (err)
 716                 return err;
 717
 718         *(__le16 *)buf = cpu_to_le16(essidlen);
 719         memcpy(buf+2, essid, essidlen);
 720         if (!zd->ap) {  /* Normal station */
 721                 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
 722                     IW_ESSID_MAX_SIZE+2, 1);
 723                 if (err)
 724                         return err;
 725         } else {        /* AP */
 726                 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
 727                     IW_ESSID_MAX_SIZE+2, 1);
 728                 if (err)
 729                         return err;
 730         }
 731
 732         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 733             zd->dev->dev_addr, zd->dev->addr_len, 1);
 734         if (err)
 735                 return err;
 736
 737         err = zd1201_enable(zd);
 738         if (err)
 739                 return err;
 740
 741         msleep(100);
 742         return 0;
 743 }
 744
 745 static int zd1201_net_open(struct net_device *dev)
 746 {
 747         struct zd1201 *zd = netdev_priv(dev);
 748
 749         /* Start MAC with wildcard if no essid set */
 750         if (!zd->mac_enabled)
 751                 zd1201_join(zd, zd->essid, zd->essidlen);
 752         netif_start_queue(dev);
 753
 754         return 0;
 755 }
 756
 757 static int zd1201_net_stop(struct net_device *dev)
 758 {
 759         netif_stop_queue(dev);
 760         return 0;
 761 }
 762
 763 /*
 764         RFC 1042 encapsulates Ethernet frames in 802.11 frames
 765         by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
 766         (0x00, 0x00, 0x00). Zd requires an additional padding, copy
 767         of ethernet addresses, length of the standard RFC 1042 packet
 768         and a command byte (which is nul for tx).
 769
 770         tx frame (from Wlan NG):
 771         RFC 1042:
 772                 llc             0xAA 0xAA 0x03 (802.2 LLC)
 773                 snap            0x00 0x00 0x00 (Ethernet encapsulated)
 774                 type            2 bytes, Ethernet type field
 775                 payload         (minus eth header)
 776         Zydas specific:
 777                 padding         1B if (skb->len+8+1)%64==0
 778                 Eth MAC addr    12 bytes, Ethernet MAC addresses
 779                 length          2 bytes, RFC 1042 packet length
 780                                 (llc+snap+type+payload)
 781                 zd              1 null byte, zd1201 packet type
 782  */
 783 static netdev_tx_t zd1201_hard_start_xmit(struct sk_buff *skb,
 784                                                 struct net_device *dev)
 785 {
 786         struct zd1201 *zd = netdev_priv(dev);
 787         unsigned char *txbuf = zd->txdata;
 788         int txbuflen, pad = 0, err;
 789         struct urb *urb = zd->tx_urb;
 790
 791         if (!zd->mac_enabled || zd->monitor) {
 792                 dev->stats.tx_dropped++;
 793                 kfree_skb(skb);
 794                 return NETDEV_TX_OK;
 795         }
 796         netif_stop_queue(dev);
 797
 798         txbuflen = skb->len + 8 + 1;
 799         if (txbuflen%64 == 0) {
 800                 pad = 1;
 801                 txbuflen++;
 802         }
 803         txbuf[0] = 0xAA;
 804         txbuf[1] = 0xAA;
 805         txbuf[2] = 0x03;
 806         txbuf[3] = 0x00;        /* rfc1042 */
 807         txbuf[4] = 0x00;
 808         txbuf[5] = 0x00;
 809
 810         skb_copy_from_linear_data_offset(skb, 12, txbuf + 6, skb->len - 12);
 811         if (pad)
 812                 txbuf[skb->len-12+6]=0;
 813         skb_copy_from_linear_data(skb, txbuf + skb->len - 12 + 6 + pad, 12);
 814         *(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
 815         txbuf[txbuflen-1] = 0;
 816
 817         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
 818             txbuf, txbuflen, zd1201_usbtx, zd);
 819
 820         err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
 821         if (err) {
 822                 dev->stats.tx_errors++;
 823                 netif_start_queue(dev);
 824         } else {
 825                 dev->stats.tx_packets++;
 826                 dev->stats.tx_bytes += skb->len;
 827         }
 828         kfree_skb(skb);
 829
 830         return NETDEV_TX_OK;
 831 }
 832
 833 static void zd1201_tx_timeout(struct net_device *dev)
 834 {
 835         struct zd1201 *zd = netdev_priv(dev);
 836
 837         if (!zd)
 838                 return;
 839         dev_warn(&zd->usb->dev, "%s: TX timeout, shooting down urb\n",
 840             dev->name);
 841         usb_unlink_urb(zd->tx_urb);
 842         dev->stats.tx_errors++;
 843         /* Restart the timeout to quiet the watchdog: */
 844         netif_trans_update(dev); /* prevent tx timeout */
 845 }
 846
 847 static int zd1201_set_mac_address(struct net_device *dev, void *p)
 848 {
 849         struct sockaddr *addr = p;
 850         struct zd1201 *zd = netdev_priv(dev);
 851         int err;
 852
 853         if (!zd)
 854                 return -ENODEV;
 855
 856         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 857             addr->sa_data, dev->addr_len, 1);
 858         if (err)
 859                 return err;
 860         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
 861
 862         return zd1201_mac_reset(zd);
 863 }
 864
 865 static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
 866 {
 867         struct zd1201 *zd = netdev_priv(dev);
 868
 869         return &zd->iwstats;
 870 }
 871
 872 static void zd1201_set_multicast(struct net_device *dev)
 873 {
 874         struct zd1201 *zd = netdev_priv(dev);
 875         struct netdev_hw_addr *ha;
 876         unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
 877         int i;
 878
 879         if (netdev_mc_count(dev) > ZD1201_MAXMULTI)
 880                 return;
 881
 882         i = 0;
 883         netdev_for_each_mc_addr(ha, dev)
 884                 memcpy(reqbuf + i++ * ETH_ALEN, ha->addr, ETH_ALEN);
 885         zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
 886                          netdev_mc_count(dev) * ETH_ALEN, 0);
 887 }
 888
 889 static int zd1201_config_commit(struct net_device *dev,
 890     struct iw_request_info *info, struct iw_point *data, char *essid)
 891 {
 892         struct zd1201 *zd = netdev_priv(dev);
 893
 894         return zd1201_mac_reset(zd);
 895 }
 896
 897 static int zd1201_get_name(struct net_device *dev,
 898     struct iw_request_info *info, char *name, char *extra)
 899 {
 900         strcpy(name, "IEEE 802.11b");
 901         return 0;
 902 }
 903
 904 static int zd1201_set_freq(struct net_device *dev,
 905     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 906 {
 907         struct zd1201 *zd = netdev_priv(dev);
 908         short channel = 0;
 909         int err;
 910
 911         if (freq->e == 0)
 912                 channel = freq->m;
 913         else
 914                 channel = ieee80211_frequency_to_channel(freq->m);
 915
 916         err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
 917         if (err)
 918                 return err;
 919
 920         zd1201_mac_reset(zd);
 921
 922         return 0;
 923 }
 924
 925 static int zd1201_get_freq(struct net_device *dev,
 926     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 927 {
 928         struct zd1201 *zd = netdev_priv(dev);
 929         short channel;
 930         int err;
 931
 932         err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
 933         if (err)
 934                 return err;
 935         freq->e = 0;
 936         freq->m = channel;
 937
 938         return 0;
 939 }
 940
 941 static int zd1201_set_mode(struct net_device *dev,
 942     struct iw_request_info *info, __u32 *mode, char *extra)
 943 {
 944         struct zd1201 *zd = netdev_priv(dev);
 945         short porttype, monitor = 0;
 946         unsigned char buffer[IW_ESSID_MAX_SIZE+2];
 947         int err;
 948
 949         if (zd->ap) {
 950                 if (*mode != IW_MODE_MASTER)
 951                         return -EINVAL;
 952                 return 0;
 953         }
 954
 955         err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 956         if (err)
 957                 return err;
 958         zd->dev->type = ARPHRD_ETHER;
 959         switch(*mode) {
 960                 case IW_MODE_MONITOR:
 961                         monitor = 1;
 962                         zd->dev->type = ARPHRD_IEEE80211;
 963                         /* Make sure we are no longer associated with by
 964                            setting an 'impossible' essid.
 965                            (otherwise we mess up firmware)
 966                          */
 967                         zd1201_join(zd, "\0-*#\0", 5);
 968                         /* Put port in pIBSS */
 969                         /* Fall through */
 970                 case 8: /* No pseudo-IBSS in wireless extensions (yet) */
 971                         porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
 972                         break;
 973                 case IW_MODE_ADHOC:
 974                         porttype = ZD1201_PORTTYPE_IBSS;
 975                         break;
 976                 case IW_MODE_INFRA:
 977                         porttype = ZD1201_PORTTYPE_BSS;
 978                         break;
 979                 default:
 980                         return -EINVAL;
 981         }
 982
 983         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
 984         if (err)
 985                 return err;
 986         if (zd->monitor && !monitor) {
 987                         zd1201_disable(zd);
 988                         *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
 989                         memcpy(buffer+2, zd->essid, zd->essidlen);
 990                         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
 991                             buffer, IW_ESSID_MAX_SIZE+2, 1);
 992                         if (err)
 993                                 return err;
 994         }
 995         zd->monitor = monitor;
 996         /* If monitor mode is set we don't actually turn it on here since it
 997          * is done during mac reset anyway (see zd1201_mac_enable).
 998          */
 999         zd1201_mac_reset(zd);
1000
1001         return 0;
1002 }
1003
1004 static int zd1201_get_mode(struct net_device *dev,
1005     struct iw_request_info *info, __u32 *mode, char *extra)
1006 {
1007         struct zd1201 *zd = netdev_priv(dev);
1008         short porttype;
1009         int err;
1010
1011         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1012         if (err)
1013                 return err;
1014         switch(porttype) {
1015                 case ZD1201_PORTTYPE_IBSS:
1016                         *mode = IW_MODE_ADHOC;
1017                         break;
1018                 case ZD1201_PORTTYPE_BSS:
1019                         *mode = IW_MODE_INFRA;
1020                         break;
1021                 case ZD1201_PORTTYPE_WDS:
1022                         *mode = IW_MODE_REPEAT;
1023                         break;
1024                 case ZD1201_PORTTYPE_PSEUDOIBSS:
1025                         *mode = 8;/* No Pseudo-IBSS... */
1026                         break;
1027                 case ZD1201_PORTTYPE_AP:
1028                         *mode = IW_MODE_MASTER;
1029                         break;
1030                 default:
1031                         dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1032                             porttype);
1033                         *mode = IW_MODE_AUTO;
1034         }
1035         if (zd->monitor)
1036                 *mode = IW_MODE_MONITOR;
1037
1038         return 0;
1039 }
1040
1041 static int zd1201_get_range(struct net_device *dev,
1042     struct iw_request_info *info, struct iw_point *wrq, char *extra)
1043 {
1044         struct iw_range *range = (struct iw_range *)extra;
1045
1046         wrq->length = sizeof(struct iw_range);
1047         memset(range, 0, sizeof(struct iw_range));
1048         range->we_version_compiled = WIRELESS_EXT;
1049         range->we_version_source = WIRELESS_EXT;
1050
1051         range->max_qual.qual = 128;
1052         range->max_qual.level = 128;
1053         range->max_qual.noise = 128;
1054         range->max_qual.updated = 7;
1055
1056         range->encoding_size[0] = 5;
1057         range->encoding_size[1] = 13;
1058         range->num_encoding_sizes = 2;
1059         range->max_encoding_tokens = ZD1201_NUMKEYS;
1060
1061         range->num_bitrates = 4;
1062         range->bitrate[0] = 1000000;
1063         range->bitrate[1] = 2000000;
1064         range->bitrate[2] = 5500000;
1065         range->bitrate[3] = 11000000;
1066
1067         range->min_rts = 0;
1068         range->min_frag = ZD1201_FRAGMIN;
1069         range->max_rts = ZD1201_RTSMAX;
1070         range->min_frag = ZD1201_FRAGMAX;
1071
1072         return 0;
1073 }
1074
1075 /*      Little bit of magic here: we only get the quality if we poll
1076  *      for it, and we never get an actual request to trigger such
1077  *      a poll. Therefore we 'assume' that the user will soon ask for
1078  *      the stats after asking the bssid.
1079  */
1080 static int zd1201_get_wap(struct net_device *dev,
1081     struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1082 {
1083         struct zd1201 *zd = netdev_priv(dev);
1084         unsigned char buffer[6];
1085
1086         if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1087                 /* Unfortunately the quality and noise reported is useless.
1088                    they seem to be accumulators that increase until you
1089                    read them, unless we poll on a fixed interval we can't
1090                    use them
1091                  */
1092                 /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1093                 zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1094                 /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1095                 zd->iwstats.qual.updated = 2;
1096         }
1097
1098         return zd1201_getconfig(zd, ZD1201_RID_CURRENTBSSID, ap_addr->sa_data, 6);
1099 }
1100
1101 static int zd1201_set_scan(struct net_device *dev,
1102     struct iw_request_info *info, struct iw_point *srq, char *extra)
1103 {
1104         /* We do everything in get_scan */
1105         return 0;
1106 }
1107
1108 static int zd1201_get_scan(struct net_device *dev,
1109     struct iw_request_info *info, struct iw_point *srq, char *extra)
1110 {
1111         struct zd1201 *zd = netdev_priv(dev);
1112         int err, i, j, enabled_save;
1113         struct iw_event iwe;
1114         char *cev = extra;
1115         char *end_buf = extra + IW_SCAN_MAX_DATA;
1116
1117         /* No scanning in AP mode */
1118         if (zd->ap)
1119                 return -EOPNOTSUPP;
1120
1121         /* Scan doesn't seem to work if disabled */
1122         enabled_save = zd->mac_enabled;
1123         zd1201_enable(zd);
1124
1125         zd->rxdatas = 0;
1126         err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE,
1127              ZD1201_INQ_SCANRESULTS, 0, 0);
1128         if (err)
1129                 return err;
1130
1131         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1132         if (!zd->rxlen)
1133                 return -EIO;
1134
1135         if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1136                 return -EIO;
1137
1138         for(i=8; i<zd->rxlen; i+=62) {
1139                 iwe.cmd = SIOCGIWAP;
1140                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1141                 memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1142                 cev = iwe_stream_add_event(info, cev, end_buf,
1143                                            &iwe, IW_EV_ADDR_LEN);
1144
1145                 iwe.cmd = SIOCGIWESSID;
1146                 iwe.u.data.length = zd->rxdata[i+16];
1147                 iwe.u.data.flags = 1;
1148                 cev = iwe_stream_add_point(info, cev, end_buf,
1149                                            &iwe, zd->rxdata+i+18);
1150
1151                 iwe.cmd = SIOCGIWMODE;
1152                 if (zd->rxdata[i+14]&0x01)
1153                         iwe.u.mode = IW_MODE_MASTER;
1154                 else
1155                         iwe.u.mode = IW_MODE_ADHOC;
1156                 cev = iwe_stream_add_event(info, cev, end_buf,
1157                                            &iwe, IW_EV_UINT_LEN);
1158
1159                 iwe.cmd = SIOCGIWFREQ;
1160                 iwe.u.freq.m = zd->rxdata[i+0];
1161                 iwe.u.freq.e = 0;
1162                 cev = iwe_stream_add_event(info, cev, end_buf,
1163                                            &iwe, IW_EV_FREQ_LEN);
1164
1165                 iwe.cmd = SIOCGIWRATE;
1166                 iwe.u.bitrate.fixed = 0;
1167                 iwe.u.bitrate.disabled = 0;
1168                 for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
1169                         iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
1170                         cev = iwe_stream_add_event(info, cev, end_buf,
1171                                                    &iwe, IW_EV_PARAM_LEN);
1172                 }
1173
1174                 iwe.cmd = SIOCGIWENCODE;
1175                 iwe.u.data.length = 0;
1176                 if (zd->rxdata[i+14]&0x10)
1177                         iwe.u.data.flags = IW_ENCODE_ENABLED;
1178                 else
1179                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1180                 cev = iwe_stream_add_point(info, cev, end_buf, &iwe, NULL);
1181
1182                 iwe.cmd = IWEVQUAL;
1183                 iwe.u.qual.qual = zd->rxdata[i+4];
1184                 iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
1185                 iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
1186                 iwe.u.qual.updated = 7;
1187                 cev = iwe_stream_add_event(info, cev, end_buf,
1188                                            &iwe, IW_EV_QUAL_LEN);
1189         }
1190
1191         if (!enabled_save)
1192                 zd1201_disable(zd);
1193
1194         srq->length = cev - extra;
1195         srq->flags = 0;
1196
1197         return 0;
1198 }
1199
1200 static int zd1201_set_essid(struct net_device *dev,
1201     struct iw_request_info *info, struct iw_point *data, char *essid)
1202 {
1203         struct zd1201 *zd = netdev_priv(dev);
1204
1205         if (data->length > IW_ESSID_MAX_SIZE)
1206                 return -EINVAL;
1207         if (data->length < 1)
1208                 data->length = 1;
1209         zd->essidlen = data->length;
1210         memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1211         memcpy(zd->essid, essid, data->length);
1212         return zd1201_join(zd, zd->essid, zd->essidlen);
1213 }
1214
1215 static int zd1201_get_essid(struct net_device *dev,
1216     struct iw_request_info *info, struct iw_point *data, char *essid)
1217 {
1218         struct zd1201 *zd = netdev_priv(dev);
1219
1220         memcpy(essid, zd->essid, zd->essidlen);
1221         data->flags = 1;
1222         data->length = zd->essidlen;
1223
1224         return 0;
1225 }
1226
1227 static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1228     struct iw_point *data, char *nick)
1229 {
1230         strcpy(nick, "zd1201");
1231         data->flags = 1;
1232         data->length = strlen(nick);
1233         return 0;
1234 }
1235
1236 static int zd1201_set_rate(struct net_device *dev,
1237     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1238 {
1239         struct zd1201 *zd = netdev_priv(dev);
1240         short rate;
1241         int err;
1242
1243         switch (rrq->value) {
1244                 case 1000000:
1245                         rate = ZD1201_RATEB1;
1246                         break;
1247                 case 2000000:
1248                         rate = ZD1201_RATEB2;
1249                         break;
1250                 case 5500000:
1251                         rate = ZD1201_RATEB5;
1252                         break;
1253                 case 11000000:
1254                 default:
1255                         rate = ZD1201_RATEB11;
1256                         break;
1257         }
1258         if (!rrq->fixed) { /* Also enable all lower bitrates */
1259                 rate |= rate-1;
1260         }
1261
1262         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1263         if (err)
1264                 return err;
1265
1266         return zd1201_mac_reset(zd);
1267 }
1268
1269 static int zd1201_get_rate(struct net_device *dev,
1270     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1271 {
1272         struct zd1201 *zd = netdev_priv(dev);
1273         short rate;
1274         int err;
1275
1276         err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1277         if (err)
1278                 return err;
1279
1280         switch(rate) {
1281                 case 1:
1282                         rrq->value = 1000000;
1283                         break;
1284                 case 2:
1285                         rrq->value = 2000000;
1286                         break;
1287                 case 5:
1288                         rrq->value = 5500000;
1289                         break;
1290                 case 11:
1291                         rrq->value = 11000000;
1292                         break;
1293                 default:
1294                         rrq->value = 0;
1295         }
1296         rrq->fixed = 0;
1297         rrq->disabled = 0;
1298
1299         return 0;
1300 }
1301
1302 static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1303     struct iw_param *rts, char *extra)
1304 {
1305         struct zd1201 *zd = netdev_priv(dev);
1306         int err;
1307         short val = rts->value;
1308
1309         if (rts->disabled || !rts->fixed)
1310                 val = ZD1201_RTSMAX;
1311         if (val > ZD1201_RTSMAX)
1312                 return -EINVAL;
1313         if (val < 0)
1314                 return -EINVAL;
1315
1316         err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1317         if (err)
1318                 return err;
1319         return zd1201_mac_reset(zd);
1320 }
1321
1322 static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1323     struct iw_param *rts, char *extra)
1324 {
1325         struct zd1201 *zd = netdev_priv(dev);
1326         short rtst;
1327         int err;
1328
1329         err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1330         if (err)
1331                 return err;
1332         rts->value = rtst;
1333         rts->disabled = (rts->value == ZD1201_RTSMAX);
1334         rts->fixed = 1;
1335
1336         return 0;
1337 }
1338
1339 static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1340     struct iw_param *frag, char *extra)
1341 {
1342         struct zd1201 *zd = netdev_priv(dev);
1343         int err;
1344         short val = frag->value;
1345
1346         if (frag->disabled || !frag->fixed)
1347                 val = ZD1201_FRAGMAX;
1348         if (val > ZD1201_FRAGMAX)
1349                 return -EINVAL;
1350         if (val < ZD1201_FRAGMIN)
1351                 return -EINVAL;
1352         if (val & 1)
1353                 return -EINVAL;
1354         err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1355         if (err)
1356                 return err;
1357         return zd1201_mac_reset(zd);
1358 }
1359
1360 static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1361     struct iw_param *frag, char *extra)
1362 {
1363         struct zd1201 *zd = netdev_priv(dev);
1364         short fragt;
1365         int err;
1366
1367         err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1368         if (err)
1369                 return err;
1370         frag->value = fragt;
1371         frag->disabled = (frag->value == ZD1201_FRAGMAX);
1372         frag->fixed = 1;
1373
1374         return 0;
1375 }
1376
1377 static int zd1201_set_retry(struct net_device *dev,
1378     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1379 {
1380         return 0;
1381 }
1382
1383 static int zd1201_get_retry(struct net_device *dev,
1384     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1385 {
1386         return 0;
1387 }
1388
1389 static int zd1201_set_encode(struct net_device *dev,
1390     struct iw_request_info *info, struct iw_point *erq, char *key)
1391 {
1392         struct zd1201 *zd = netdev_priv(dev);
1393         short i;
1394         int err, rid;
1395
1396         if (erq->length > ZD1201_MAXKEYLEN)
1397                 return -EINVAL;
1398
1399         i = (erq->flags & IW_ENCODE_INDEX)-1;
1400         if (i == -1) {
1401                 err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1402                 if (err)
1403                         return err;
1404         } else {
1405                 err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1406                 if (err)
1407                         return err;
1408         }
1409
1410         if (i < 0 || i >= ZD1201_NUMKEYS)
1411                 return -EINVAL;
1412
1413         rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1414         err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1415         if (err)
1416                 return err;
1417         zd->encode_keylen[i] = erq->length;
1418         memcpy(zd->encode_keys[i], key, erq->length);
1419
1420         i=0;
1421         if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1422                 i |= 0x01;
1423                 zd->encode_enabled = 1;
1424         } else
1425                 zd->encode_enabled = 0;
1426         if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1427                 i |= 0x02;
1428                 zd->encode_restricted = 1;
1429         } else
1430                 zd->encode_restricted = 0;
1431         err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1432         if (err)
1433                 return err;
1434
1435         if (zd->encode_enabled)
1436                 i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1437         else
1438                 i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1439         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1440         if (err)
1441                 return err;
1442
1443         return zd1201_mac_reset(zd);
1444 }
1445
1446 static int zd1201_get_encode(struct net_device *dev,
1447     struct iw_request_info *info, struct iw_point *erq, char *key)
1448 {
1449         struct zd1201 *zd = netdev_priv(dev);
1450         short i;
1451         int err;
1452
1453         if (zd->encode_enabled)
1454                 erq->flags = IW_ENCODE_ENABLED;
1455         else
1456                 erq->flags = IW_ENCODE_DISABLED;
1457         if (zd->encode_restricted)
1458                 erq->flags |= IW_ENCODE_RESTRICTED;
1459         else
1460                 erq->flags |= IW_ENCODE_OPEN;
1461
1462         i = (erq->flags & IW_ENCODE_INDEX) -1;
1463         if (i == -1) {
1464                 err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1465                 if (err)
1466                         return err;
1467         }
1468         if (i<0 || i>= ZD1201_NUMKEYS)
1469                 return -EINVAL;
1470
1471         erq->flags |= i+1;
1472
1473         erq->length = zd->encode_keylen[i];
1474         memcpy(key, zd->encode_keys[i], erq->length);
1475
1476         return 0;
1477 }
1478
1479 static int zd1201_set_power(struct net_device *dev,
1480     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1481 {
1482         struct zd1201 *zd = netdev_priv(dev);
1483         short enabled, duration, level;
1484         int err;
1485
1486         enabled = vwrq->disabled ? 0 : 1;
1487         if (enabled) {
1488                 if (vwrq->flags & IW_POWER_PERIOD) {
1489                         duration = vwrq->value;
1490                         err = zd1201_setconfig16(zd,
1491                             ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1492                         if (err)
1493                                 return err;
1494                         goto out;
1495                 }
1496                 if (vwrq->flags & IW_POWER_TIMEOUT) {
1497                         err = zd1201_getconfig16(zd,
1498                             ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1499                         if (err)
1500                                 return err;
1501                         level = vwrq->value * 4 / duration;
1502                         if (level > 4)
1503                                 level = 4;
1504                         if (level < 0)
1505                                 level = 0;
1506                         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1507                             level);
1508                         if (err)
1509                                 return err;
1510                         goto out;
1511                 }
1512                 return -EINVAL;
1513         }
1514 out:
1515         return zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1516 }
1517
1518 static int zd1201_get_power(struct net_device *dev,
1519     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1520 {
1521         struct zd1201 *zd = netdev_priv(dev);
1522         short enabled, level, duration;
1523         int err;
1524
1525         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1526         if (err)
1527                 return err;
1528         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1529         if (err)
1530                 return err;
1531         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1532         if (err)
1533                 return err;
1534         vwrq->disabled = enabled ? 0 : 1;
1535         if (vwrq->flags & IW_POWER_TYPE) {
1536                 if (vwrq->flags & IW_POWER_PERIOD) {
1537                         vwrq->value = duration;
1538                         vwrq->flags = IW_POWER_PERIOD;
1539                 } else {
1540                         vwrq->value = duration * level / 4;
1541                         vwrq->flags = IW_POWER_TIMEOUT;
1542                 }
1543         }
1544         if (vwrq->flags & IW_POWER_MODE) {
1545                 if (enabled && level)
1546                         vwrq->flags = IW_POWER_UNICAST_R;
1547                 else
1548                         vwrq->flags = IW_POWER_ALL_R;
1549         }
1550
1551         return 0;
1552 }
1553
1554
1555 static const iw_handler zd1201_iw_handler[] =
1556 {
1557         (iw_handler) zd1201_config_commit,      /* SIOCSIWCOMMIT */
1558         (iw_handler) zd1201_get_name,           /* SIOCGIWNAME */
1559         (iw_handler) NULL,                      /* SIOCSIWNWID */
1560         (iw_handler) NULL,                      /* SIOCGIWNWID */
1561         (iw_handler) zd1201_set_freq,           /* SIOCSIWFREQ */
1562         (iw_handler) zd1201_get_freq,           /* SIOCGIWFREQ */
1563         (iw_handler) zd1201_set_mode,           /* SIOCSIWMODE */
1564         (iw_handler) zd1201_get_mode,           /* SIOCGIWMODE */
1565         (iw_handler) NULL,                      /* SIOCSIWSENS */
1566         (iw_handler) NULL,                      /* SIOCGIWSENS */
1567         (iw_handler) NULL,                      /* SIOCSIWRANGE */
1568         (iw_handler) zd1201_get_range,           /* SIOCGIWRANGE */
1569         (iw_handler) NULL,                      /* SIOCSIWPRIV */
1570         (iw_handler) NULL,                      /* SIOCGIWPRIV */
1571         (iw_handler) NULL,                      /* SIOCSIWSTATS */
1572         (iw_handler) NULL,                      /* SIOCGIWSTATS */
1573         (iw_handler) NULL,                      /* SIOCSIWSPY */
1574         (iw_handler) NULL,                      /* SIOCGIWSPY */
1575         (iw_handler) NULL,                      /* -- hole -- */
1576         (iw_handler) NULL,                      /* -- hole -- */
1577         (iw_handler) NULL/*zd1201_set_wap*/,            /* SIOCSIWAP */
1578         (iw_handler) zd1201_get_wap,            /* SIOCGIWAP */
1579         (iw_handler) NULL,                      /* -- hole -- */
1580         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
1581         (iw_handler) zd1201_set_scan,           /* SIOCSIWSCAN */
1582         (iw_handler) zd1201_get_scan,           /* SIOCGIWSCAN */
1583         (iw_handler) zd1201_set_essid,          /* SIOCSIWESSID */
1584         (iw_handler) zd1201_get_essid,          /* SIOCGIWESSID */
1585         (iw_handler) NULL,                      /* SIOCSIWNICKN */
1586         (iw_handler) zd1201_get_nick,           /* SIOCGIWNICKN */
1587         (iw_handler) NULL,                      /* -- hole -- */
1588         (iw_handler) NULL,                      /* -- hole -- */
1589         (iw_handler) zd1201_set_rate,           /* SIOCSIWRATE */
1590         (iw_handler) zd1201_get_rate,           /* SIOCGIWRATE */
1591         (iw_handler) zd1201_set_rts,            /* SIOCSIWRTS */
1592         (iw_handler) zd1201_get_rts,            /* SIOCGIWRTS */
1593         (iw_handler) zd1201_set_frag,           /* SIOCSIWFRAG */
1594         (iw_handler) zd1201_get_frag,           /* SIOCGIWFRAG */
1595         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
1596         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
1597         (iw_handler) zd1201_set_retry,          /* SIOCSIWRETRY */
1598         (iw_handler) zd1201_get_retry,          /* SIOCGIWRETRY */
1599         (iw_handler) zd1201_set_encode,         /* SIOCSIWENCODE */
1600         (iw_handler) zd1201_get_encode,         /* SIOCGIWENCODE */
1601         (iw_handler) zd1201_set_power,          /* SIOCSIWPOWER */
1602         (iw_handler) zd1201_get_power,          /* SIOCGIWPOWER */
1603 };
1604
1605 static int zd1201_set_hostauth(struct net_device *dev,
1606     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1607 {
1608         struct zd1201 *zd = netdev_priv(dev);
1609
1610         if (!zd->ap)
1611                 return -EOPNOTSUPP;
1612
1613         return zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1614 }
1615
1616 static int zd1201_get_hostauth(struct net_device *dev,
1617     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1618 {
1619         struct zd1201 *zd = netdev_priv(dev);
1620         short hostauth;
1621         int err;
1622
1623         if (!zd->ap)
1624                 return -EOPNOTSUPP;
1625
1626         err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1627         if (err)
1628                 return err;
1629         rrq->value = hostauth;
1630         rrq->fixed = 1;
1631
1632         return 0;
1633 }
1634
1635 static int zd1201_auth_sta(struct net_device *dev,
1636     struct iw_request_info *info, struct sockaddr *sta, char *extra)
1637 {
1638         struct zd1201 *zd = netdev_priv(dev);
1639         unsigned char buffer[10];
1640
1641         if (!zd->ap)
1642                 return -EOPNOTSUPP;
1643
1644         memcpy(buffer, sta->sa_data, ETH_ALEN);
1645         *(short*)(buffer+6) = 0;        /* 0==success, 1==failure */
1646         *(short*)(buffer+8) = 0;
1647
1648         return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1649 }
1650
1651 static int zd1201_set_maxassoc(struct net_device *dev,
1652     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1653 {
1654         struct zd1201 *zd = netdev_priv(dev);
1655         int err;
1656
1657         if (!zd->ap)
1658                 return -EOPNOTSUPP;
1659
1660         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1661         if (err)
1662                 return err;
1663         return 0;
1664 }
1665
1666 static int zd1201_get_maxassoc(struct net_device *dev,
1667     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1668 {
1669         struct zd1201 *zd = netdev_priv(dev);
1670         short maxassoc;
1671         int err;
1672
1673         if (!zd->ap)
1674                 return -EOPNOTSUPP;
1675
1676         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1677         if (err)
1678                 return err;
1679         rrq->value = maxassoc;
1680         rrq->fixed = 1;
1681
1682         return 0;
1683 }
1684
1685 static const iw_handler zd1201_private_handler[] = {
1686         (iw_handler) zd1201_set_hostauth,       /* ZD1201SIWHOSTAUTH */
1687         (iw_handler) zd1201_get_hostauth,       /* ZD1201GIWHOSTAUTH */
1688         (iw_handler) zd1201_auth_sta,           /* ZD1201SIWAUTHSTA */
1689         (iw_handler) NULL,                      /* nothing to get */
1690         (iw_handler) zd1201_set_maxassoc,       /* ZD1201SIMAXASSOC */
1691         (iw_handler) zd1201_get_maxassoc,       /* ZD1201GIMAXASSOC */
1692 };
1693
1694 static const struct iw_priv_args zd1201_private_args[] = {
1695         { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1696             IW_PRIV_TYPE_NONE, "sethostauth" },
1697         { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1698             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1699         { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1700             IW_PRIV_TYPE_NONE, "authstation" },
1701         { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1702             IW_PRIV_TYPE_NONE, "setmaxassoc" },
1703         { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1704             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1705 };
1706
1707 static const struct iw_handler_def zd1201_iw_handlers = {
1708         .num_standard           = ARRAY_SIZE(zd1201_iw_handler),
1709         .num_private            = ARRAY_SIZE(zd1201_private_handler),
1710         .num_private_args       = ARRAY_SIZE(zd1201_private_args),
1711         .standard               = (iw_handler *)zd1201_iw_handler,
1712         .private                = (iw_handler *)zd1201_private_handler,
1713         .private_args           = (struct iw_priv_args *) zd1201_private_args,
1714         .get_wireless_stats     = zd1201_get_wireless_stats,
1715 };
1716
1717 static const struct net_device_ops zd1201_netdev_ops = {
1718         .ndo_open               = zd1201_net_open,
1719         .ndo_stop               = zd1201_net_stop,
1720         .ndo_start_xmit         = zd1201_hard_start_xmit,
1721         .ndo_tx_timeout         = zd1201_tx_timeout,
1722         .ndo_set_rx_mode        = zd1201_set_multicast,
1723         .ndo_set_mac_address    = zd1201_set_mac_address,
1724         .ndo_validate_addr      = eth_validate_addr,
1725 };
1726
1727 static int zd1201_probe(struct usb_interface *interface,
1728                         const struct usb_device_id *id)
1729 {
1730         struct zd1201 *zd;
1731         struct net_device *dev;
1732         struct usb_device *usb;
1733         int err;
1734         short porttype;
1735         char buf[IW_ESSID_MAX_SIZE+2];
1736
1737         usb = interface_to_usbdev(interface);
1738
1739         dev = alloc_etherdev(sizeof(*zd));
1740         if (!dev)
1741                 return -ENOMEM;
1742         zd = netdev_priv(dev);
1743         zd->dev = dev;
1744
1745         zd->ap = ap;
1746         zd->usb = usb;
1747         zd->removed = 0;
1748         init_waitqueue_head(&zd->rxdataq);
1749         INIT_HLIST_HEAD(&zd->fraglist);
1750
1751         err = zd1201_fw_upload(usb, zd->ap);
1752         if (err) {
1753                 dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
1754                 goto err_zd;
1755         }
1756
1757         zd->endp_in = 1;
1758         zd->endp_out = 1;
1759         zd->endp_out2 = 2;
1760         zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1761         zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1762         if (!zd->rx_urb || !zd->tx_urb) {
1763                 err = -ENOMEM;
1764                 goto err_zd;
1765         }
1766
1767         mdelay(100);
1768         err = zd1201_drvr_start(zd);
1769         if (err)
1770                 goto err_zd;
1771
1772         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
1773         if (err)
1774                 goto err_start;
1775
1776         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
1777             ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
1778         if (err)
1779                 goto err_start;
1780
1781         dev->netdev_ops = &zd1201_netdev_ops;
1782         dev->wireless_handlers = &zd1201_iw_handlers;
1783         dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
1784         strcpy(dev->name, "wlan%d");
1785
1786         err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR,
1787             dev->dev_addr, dev->addr_len);
1788         if (err)
1789                 goto err_start;
1790
1791         /* Set wildcard essid to match zd->essid */
1792         *(__le16 *)buf = cpu_to_le16(0);
1793         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
1794             IW_ESSID_MAX_SIZE+2, 1);
1795         if (err)
1796                 goto err_start;
1797
1798         if (zd->ap)
1799                 porttype = ZD1201_PORTTYPE_AP;
1800         else
1801                 porttype = ZD1201_PORTTYPE_BSS;
1802         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1803         if (err)
1804                 goto err_start;
1805
1806         SET_NETDEV_DEV(dev, &usb->dev);
1807
1808         err = register_netdev(dev);
1809         if (err)
1810                 goto err_start;
1811         dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
1812             dev->name);
1813
1814         usb_set_intfdata(interface, zd);
1815         zd1201_enable(zd);      /* zd1201 likes to startup enabled, */
1816         zd1201_disable(zd);     /* interfering with all the wifis in range */
1817         return 0;
1818
1819 err_start:
1820         /* Leave the device in reset state */
1821         zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
1822 err_zd:
1823         usb_free_urb(zd->tx_urb);
1824         usb_free_urb(zd->rx_urb);
1825         free_netdev(dev);
1826         return err;
1827 }
1828
1829 static void zd1201_disconnect(struct usb_interface *interface)
1830 {
1831         struct zd1201 *zd = usb_get_intfdata(interface);
1832         struct hlist_node *node2;
1833         struct zd1201_frag *frag;
1834
1835         if (!zd)
1836                 return;
1837         usb_set_intfdata(interface, NULL);
1838
1839         hlist_for_each_entry_safe(frag, node2, &zd->fraglist, fnode) {
1840                 hlist_del_init(&frag->fnode);
1841                 kfree_skb(frag->skb);
1842                 kfree(frag);
1843         }
1844
1845         if (zd->tx_urb) {
1846                 usb_kill_urb(zd->tx_urb);
1847                 usb_free_urb(zd->tx_urb);
1848         }
1849         if (zd->rx_urb) {
1850                 usb_kill_urb(zd->rx_urb);
1851                 usb_free_urb(zd->rx_urb);
1852         }
1853
1854         if (zd->dev) {
1855                 unregister_netdev(zd->dev);
1856                 free_netdev(zd->dev);
1857         }
1858 }
1859
1860 #ifdef CONFIG_PM
1861
1862 static int zd1201_suspend(struct usb_interface *interface,
1863                            pm_message_t message)
1864 {
1865         struct zd1201 *zd = usb_get_intfdata(interface);
1866
1867         netif_device_detach(zd->dev);
1868
1869         zd->was_enabled = zd->mac_enabled;
1870
1871         if (zd->was_enabled)
1872                 return zd1201_disable(zd);
1873         else
1874                 return 0;
1875 }
1876
1877 static int zd1201_resume(struct usb_interface *interface)
1878 {
1879         struct zd1201 *zd = usb_get_intfdata(interface);
1880
1881         if (!zd || !zd->dev)
1882                 return -ENODEV;
1883
1884         netif_device_attach(zd->dev);
1885
1886         if (zd->was_enabled)
1887                 return zd1201_enable(zd);
1888         else
1889                 return 0;
1890 }
1891
1892 #else
1893
1894 #define zd1201_suspend NULL
1895 #define zd1201_resume  NULL
1896
1897 #endif
1898
1899 static struct usb_driver zd1201_usb = {
1900         .name = "zd1201",
1901         .probe = zd1201_probe,
1902         .disconnect = zd1201_disconnect,
1903         .id_table = zd1201_table,
1904         .suspend = zd1201_suspend,
1905         .resume = zd1201_resume,
1906         .disable_hub_initiated_lpm = 1,
1907 };
1908
1909 module_usb_driver(zd1201_usb);