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 = "/*(DEBLOBBED)*/";
  60         else
  61                 fwfile = "/*(DEBLOBBED)*/";
  62
  63         err = reject_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 /*(DEBLOBBED)*/
 119
 120 static void zd1201_usbfree(struct urb *urb)
 121 {
 122         struct zd1201 *zd = urb->context;
 123
 124         switch(urb->status) {
 125                 case -EILSEQ:
 126                 case -ENODEV:
 127                 case -ETIME:
 128                 case -ENOENT:
 129                 case -EPIPE:
 130                 case -EOVERFLOW:
 131                 case -ESHUTDOWN:
 132                         dev_warn(&zd->usb->dev, "%s: urb failed: %d\n",
 133                             zd->dev->name, urb->status);
 134         }
 135
 136         kfree(urb->transfer_buffer);
 137         usb_free_urb(urb);
 138 }
 139
 140 /* cmdreq message:
 141         u32 type
 142         u16 cmd
 143         u16 parm0
 144         u16 parm1
 145         u16 parm2
 146         u8  pad[4]
 147
 148         total: 4 + 2 + 2 + 2 + 2 + 4 = 16
 149 */
 150 static int zd1201_docmd(struct zd1201 *zd, int cmd, int parm0,
 151                         int parm1, int parm2)
 152 {
 153         unsigned char *command;
 154         int ret;
 155         struct urb *urb;
 156
 157         command = kmalloc(16, GFP_ATOMIC);
 158         if (!command)
 159                 return -ENOMEM;
 160
 161         *((__le32*)command) = cpu_to_le32(ZD1201_USB_CMDREQ);
 162         *((__le16*)&command[4]) = cpu_to_le16(cmd);
 163         *((__le16*)&command[6]) = cpu_to_le16(parm0);
 164         *((__le16*)&command[8]) = cpu_to_le16(parm1);
 165         *((__le16*)&command[10])= cpu_to_le16(parm2);
 166
 167         urb = usb_alloc_urb(0, GFP_ATOMIC);
 168         if (!urb) {
 169                 kfree(command);
 170                 return -ENOMEM;
 171         }
 172         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 173                           command, 16, zd1201_usbfree, zd);
 174         ret = usb_submit_urb(urb, GFP_ATOMIC);
 175         if (ret) {
 176                 kfree(command);
 177                 usb_free_urb(urb);
 178         }
 179
 180         return ret;
 181 }
 182
 183 /* Callback after sending out a packet */
 184 static void zd1201_usbtx(struct urb *urb)
 185 {
 186         struct zd1201 *zd = urb->context;
 187         netif_wake_queue(zd->dev);
 188 }
 189
 190 /* Incoming data */
 191 static void zd1201_usbrx(struct urb *urb)
 192 {
 193         struct zd1201 *zd = urb->context;
 194         int free = 0;
 195         unsigned char *data = urb->transfer_buffer;
 196         struct sk_buff *skb;
 197         unsigned char type;
 198
 199         if (!zd)
 200                 return;
 201
 202         switch(urb->status) {
 203                 case -EILSEQ:
 204                 case -ENODEV:
 205                 case -ETIME:
 206                 case -ENOENT:
 207                 case -EPIPE:
 208                 case -EOVERFLOW:
 209                 case -ESHUTDOWN:
 210                         dev_warn(&zd->usb->dev, "%s: rx urb failed: %d\n",
 211                             zd->dev->name, urb->status);
 212                         free = 1;
 213                         goto exit;
 214         }
 215
 216         if (urb->status != 0 || urb->actual_length == 0)
 217                 goto resubmit;
 218
 219         type = data[0];
 220         if (type == ZD1201_PACKET_EVENTSTAT || type == ZD1201_PACKET_RESOURCE) {
 221                 memcpy(zd->rxdata, data, urb->actual_length);
 222                 zd->rxlen = urb->actual_length;
 223                 zd->rxdatas = 1;
 224                 wake_up(&zd->rxdataq);
 225         }
 226         /* Info frame */
 227         if (type == ZD1201_PACKET_INQUIRE) {
 228                 int i = 0;
 229                 unsigned short infotype, copylen;
 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
 312                 len = ntohs(*(__be16 *)&data[datalen-2]);
 313                 if (len>datalen)
 314                         len=datalen;
 315                 fc = le16_to_cpu(*(__le16 *)&data[datalen-16]);
 316                 seq = le16_to_cpu(*(__le16 *)&data[datalen-24]);
 317
 318                 if (zd->monitor) {
 319                         if (datalen < 24)
 320                                 goto resubmit;
 321                         if (!(skb = dev_alloc_skb(datalen+24)))
 322                                 goto resubmit;
 323
 324                         skb_put_data(skb, &data[datalen - 16], 2);
 325                         skb_put_data(skb, &data[datalen - 2], 2);
 326                         skb_put_data(skb, &data[datalen - 14], 6);
 327                         skb_put_data(skb, &data[datalen - 22], 6);
 328                         skb_put_data(skb, &data[datalen - 8], 6);
 329                         skb_put_data(skb, &data[datalen - 24], 2);
 330                         skb_put_data(skb, data, len);
 331                         skb->protocol = eth_type_trans(skb, zd->dev);
 332                         zd->dev->stats.rx_packets++;
 333                         zd->dev->stats.rx_bytes += skb->len;
 334                         netif_rx(skb);
 335                         goto resubmit;
 336                 }
 337
 338                 if ((seq & IEEE80211_SCTL_FRAG) ||
 339                     (fc & IEEE80211_FCTL_MOREFRAGS)) {
 340                         struct zd1201_frag *frag = NULL;
 341                         char *ptr;
 342
 343                         if (datalen<14)
 344                                 goto resubmit;
 345                         if ((seq & IEEE80211_SCTL_FRAG) == 0) {
 346                                 frag = kmalloc(sizeof(*frag), GFP_ATOMIC);
 347                                 if (!frag)
 348                                         goto resubmit;
 349                                 skb = dev_alloc_skb(IEEE80211_MAX_DATA_LEN +14+2);
 350                                 if (!skb) {
 351                                         kfree(frag);
 352                                         goto resubmit;
 353                                 }
 354                                 frag->skb = skb;
 355                                 frag->seq = seq & IEEE80211_SCTL_SEQ;
 356                                 skb_reserve(skb, 2);
 357                                 skb_put_data(skb, &data[datalen - 14], 12);
 358                                 skb_put_data(skb, &data[6], 2);
 359                                 skb_put_data(skb, data + 8, len);
 360                                 hlist_add_head(&frag->fnode, &zd->fraglist);
 361                                 goto resubmit;
 362                         }
 363                         hlist_for_each_entry(frag, &zd->fraglist, fnode)
 364                                 if (frag->seq == (seq&IEEE80211_SCTL_SEQ))
 365                                         break;
 366                         if (!frag)
 367                                 goto resubmit;
 368                         skb = frag->skb;
 369                         ptr = skb_put(skb, len);
 370                         if (ptr)
 371                                 memcpy(ptr, data+8, len);
 372                         if (fc & IEEE80211_FCTL_MOREFRAGS)
 373                                 goto resubmit;
 374                         hlist_del_init(&frag->fnode);
 375                         kfree(frag);
 376                 } else {
 377                         if (datalen<14)
 378                                 goto resubmit;
 379                         skb = dev_alloc_skb(len + 14 + 2);
 380                         if (!skb)
 381                                 goto resubmit;
 382                         skb_reserve(skb, 2);
 383                         skb_put_data(skb, &data[datalen - 14], 12);
 384                         skb_put_data(skb, &data[6], 2);
 385                         skb_put_data(skb, data + 8, len);
 386                 }
 387                 skb->protocol = eth_type_trans(skb, zd->dev);
 388                 zd->dev->stats.rx_packets++;
 389                 zd->dev->stats.rx_bytes += skb->len;
 390                 netif_rx(skb);
 391         }
 392 resubmit:
 393         memset(data, 0, ZD1201_RXSIZE);
 394
 395         urb->status = 0;
 396         urb->dev = zd->usb;
 397         if(usb_submit_urb(urb, GFP_ATOMIC))
 398                 free = 1;
 399
 400 exit:
 401         if (free) {
 402                 zd->rxlen = 0;
 403                 zd->rxdatas = 1;
 404                 wake_up(&zd->rxdataq);
 405                 kfree(urb->transfer_buffer);
 406         }
 407 }
 408
 409 static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
 410         unsigned int riddatalen)
 411 {
 412         int err;
 413         int i = 0;
 414         int code;
 415         int rid_fid;
 416         int length;
 417         unsigned char *pdata;
 418
 419         zd->rxdatas = 0;
 420         err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
 421         if (err)
 422                 return err;
 423
 424         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 425         if (!zd->rxlen)
 426                 return -EIO;
 427
 428         code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
 429         rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
 430         length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
 431         if (length > zd->rxlen)
 432                 length = zd->rxlen-6;
 433
 434         /* If access bit is not on, then error */
 435         if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
 436                 return -EINVAL;
 437
 438         /* Not enough buffer for allocating data */
 439         if (riddatalen != (length - 4)) {
 440                 dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
 441                     riddatalen, zd->rxlen, length, rid, rid_fid);
 442                 return -ENODATA;
 443         }
 444
 445         zd->rxdatas = 0;
 446         /* Issue SetRxRid commnd */
 447         err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
 448         if (err)
 449                 return err;
 450
 451         /* Receive RID record from resource packets */
 452         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 453         if (!zd->rxlen)
 454                 return -EIO;
 455
 456         if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
 457                 dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
 458                     zd->rxdata[zd->rxlen-1]);
 459                 return -EINVAL;
 460         }
 461
 462         /* Set the data pointer and received data length */
 463         pdata = zd->rxdata;
 464         length = zd->rxlen;
 465
 466         do {
 467                 int actual_length;
 468
 469                 actual_length = (length > 64) ? 64 : length;
 470
 471                 if (pdata[0] != 0x3) {
 472                         dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
 473                             pdata[0]);
 474                         return -EINVAL;
 475                 }
 476
 477                 if (actual_length != 64) {
 478                         /* Trim the last packet type byte */
 479                         actual_length--;
 480                 }
 481
 482                 /* Skip the 4 bytes header (RID length and RID) */
 483                 if (i == 0) {
 484                         pdata += 8;
 485                         actual_length -= 8;
 486                 } else {
 487                         pdata += 4;
 488                         actual_length -= 4;
 489                 }
 490
 491                 memcpy(riddata, pdata, actual_length);
 492                 riddata += actual_length;
 493                 pdata += actual_length;
 494                 length -= 64;
 495                 i++;
 496         } while (length > 0);
 497
 498         return 0;
 499 }
 500
 501 /*
 502  *      resreq:
 503  *              byte    type
 504  *              byte    sequence
 505  *              u16     reserved
 506  *              byte    data[12]
 507  *      total: 16
 508  */
 509 static int zd1201_setconfig(struct zd1201 *zd, int rid, const void *buf, int len, int wait)
 510 {
 511         int err;
 512         unsigned char *request;
 513         int reqlen;
 514         char seq=0;
 515         struct urb *urb;
 516         gfp_t gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
 517
 518         len += 4;                       /* first 4 are for header */
 519
 520         zd->rxdatas = 0;
 521         zd->rxlen = 0;
 522         for (seq=0; len > 0; seq++) {
 523                 request = kzalloc(16, gfp_mask);
 524                 if (!request)
 525                         return -ENOMEM;
 526                 urb = usb_alloc_urb(0, gfp_mask);
 527                 if (!urb) {
 528                         kfree(request);
 529                         return -ENOMEM;
 530                 }
 531                 reqlen = len>12 ? 12 : len;
 532                 request[0] = ZD1201_USB_RESREQ;
 533                 request[1] = seq;
 534                 request[2] = 0;
 535                 request[3] = 0;
 536                 if (request[1] == 0) {
 537                         /* add header */
 538                         *(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
 539                         *(__le16*)&request[6] = cpu_to_le16(rid);
 540                         memcpy(request+8, buf, reqlen-4);
 541                         buf += reqlen-4;
 542                 } else {
 543                         memcpy(request+4, buf, reqlen);
 544                         buf += reqlen;
 545                 }
 546
 547                 len -= reqlen;
 548
 549                 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
 550                     zd->endp_out2), request, 16, zd1201_usbfree, zd);
 551                 err = usb_submit_urb(urb, gfp_mask);
 552                 if (err)
 553                         goto err;
 554         }
 555
 556         request = kmalloc(16, gfp_mask);
 557         if (!request)
 558                 return -ENOMEM;
 559         urb = usb_alloc_urb(0, gfp_mask);
 560         if (!urb) {
 561                 kfree(request);
 562                 return -ENOMEM;
 563         }
 564         *((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
 565         *((__le16*)&request[4]) =
 566             cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
 567         *((__le16*)&request[6]) = cpu_to_le16(rid);
 568         *((__le16*)&request[8]) = cpu_to_le16(0);
 569         *((__le16*)&request[10]) = cpu_to_le16(0);
 570         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 571              request, 16, zd1201_usbfree, zd);
 572         err = usb_submit_urb(urb, gfp_mask);
 573         if (err)
 574                 goto err;
 575
 576         if (wait) {
 577                 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 578                 if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
 579                         dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
 580                 }
 581         }
 582
 583         return 0;
 584 err:
 585         kfree(request);
 586         usb_free_urb(urb);
 587         return err;
 588 }
 589
 590 static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
 591 {
 592         int err;
 593         __le16 zdval;
 594
 595         err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
 596         if (err)
 597                 return err;
 598         *val = le16_to_cpu(zdval);
 599         return 0;
 600 }
 601
 602 static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
 603 {
 604         __le16 zdval = cpu_to_le16(val);
 605         return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
 606 }
 607
 608 static int zd1201_drvr_start(struct zd1201 *zd)
 609 {
 610         int err, i;
 611         short max;
 612         __le16 zdmax;
 613         unsigned char *buffer;
 614
 615         buffer = kzalloc(ZD1201_RXSIZE, GFP_KERNEL);
 616         if (!buffer)
 617                 return -ENOMEM;
 618
 619         usb_fill_bulk_urb(zd->rx_urb, zd->usb,
 620             usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
 621             zd1201_usbrx, zd);
 622
 623         err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
 624         if (err)
 625                 goto err_buffer;
 626
 627         err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
 628         if (err)
 629                 goto err_urb;
 630
 631         err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
 632             sizeof(__le16));
 633         if (err)
 634                 goto err_urb;
 635
 636         max = le16_to_cpu(zdmax);
 637         for (i=0; i<max; i++) {
 638                 err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
 639                 if (err)
 640                         goto err_urb;
 641         }
 642
 643         return 0;
 644
 645 err_urb:
 646         usb_kill_urb(zd->rx_urb);
 647         return err;
 648 err_buffer:
 649         kfree(buffer);
 650         return err;
 651 }
 652
 653 /*      Magic alert: The firmware doesn't seem to like the MAC state being
 654  *      toggled in promisc (aka monitor) mode.
 655  *      (It works a number of times, but will halt eventually)
 656  *      So we turn it of before disabling and on after enabling if needed.
 657  */
 658 static int zd1201_enable(struct zd1201 *zd)
 659 {
 660         int err;
 661
 662         if (zd->mac_enabled)
 663                 return 0;
 664
 665         err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
 666         if (!err)
 667                 zd->mac_enabled = 1;
 668
 669         if (zd->monitor)
 670                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
 671
 672         return err;
 673 }
 674
 675 static int zd1201_disable(struct zd1201 *zd)
 676 {
 677         int err;
 678
 679         if (!zd->mac_enabled)
 680                 return 0;
 681         if (zd->monitor) {
 682                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 683                 if (err)
 684                         return err;
 685         }
 686
 687         err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
 688         if (!err)
 689                 zd->mac_enabled = 0;
 690         return err;
 691 }
 692
 693 static int zd1201_mac_reset(struct zd1201 *zd)
 694 {
 695         if (!zd->mac_enabled)
 696                 return 0;
 697         zd1201_disable(zd);
 698         return zd1201_enable(zd);
 699 }
 700
 701 static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
 702 {
 703         int err, val;
 704         char buf[IW_ESSID_MAX_SIZE+2];
 705
 706         err = zd1201_disable(zd);
 707         if (err)
 708                 return err;
 709
 710         val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
 711         val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
 712         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
 713         if (err)
 714                 return err;
 715
 716         *(__le16 *)buf = cpu_to_le16(essidlen);
 717         memcpy(buf+2, essid, essidlen);
 718         if (!zd->ap) {  /* Normal station */
 719                 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
 720                     IW_ESSID_MAX_SIZE+2, 1);
 721                 if (err)
 722                         return err;
 723         } else {        /* AP */
 724                 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
 725                     IW_ESSID_MAX_SIZE+2, 1);
 726                 if (err)
 727                         return err;
 728         }
 729
 730         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 731             zd->dev->dev_addr, zd->dev->addr_len, 1);
 732         if (err)
 733                 return err;
 734
 735         err = zd1201_enable(zd);
 736         if (err)
 737                 return err;
 738
 739         msleep(100);
 740         return 0;
 741 }
 742
 743 static int zd1201_net_open(struct net_device *dev)
 744 {
 745         struct zd1201 *zd = netdev_priv(dev);
 746
 747         /* Start MAC with wildcard if no essid set */
 748         if (!zd->mac_enabled)
 749                 zd1201_join(zd, zd->essid, zd->essidlen);
 750         netif_start_queue(dev);
 751
 752         return 0;
 753 }
 754
 755 static int zd1201_net_stop(struct net_device *dev)
 756 {
 757         netif_stop_queue(dev);
 758         return 0;
 759 }
 760
 761 /*
 762         RFC 1042 encapsulates Ethernet frames in 802.11 frames
 763         by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
 764         (0x00, 0x00, 0x00). Zd requires an additional padding, copy
 765         of ethernet addresses, length of the standard RFC 1042 packet
 766         and a command byte (which is nul for tx).
 767
 768         tx frame (from Wlan NG):
 769         RFC 1042:
 770                 llc             0xAA 0xAA 0x03 (802.2 LLC)
 771                 snap            0x00 0x00 0x00 (Ethernet encapsulated)
 772                 type            2 bytes, Ethernet type field
 773                 payload         (minus eth header)
 774         Zydas specific:
 775                 padding         1B if (skb->len+8+1)%64==0
 776                 Eth MAC addr    12 bytes, Ethernet MAC addresses
 777                 length          2 bytes, RFC 1042 packet length
 778                                 (llc+snap+type+payload)
 779                 zd              1 null byte, zd1201 packet type
 780  */
 781 static netdev_tx_t zd1201_hard_start_xmit(struct sk_buff *skb,
 782                                                 struct net_device *dev)
 783 {
 784         struct zd1201 *zd = netdev_priv(dev);
 785         unsigned char *txbuf = zd->txdata;
 786         int txbuflen, pad = 0, err;
 787         struct urb *urb = zd->tx_urb;
 788
 789         if (!zd->mac_enabled || zd->monitor) {
 790                 dev->stats.tx_dropped++;
 791                 kfree_skb(skb);
 792                 return NETDEV_TX_OK;
 793         }
 794         netif_stop_queue(dev);
 795
 796         txbuflen = skb->len + 8 + 1;
 797         if (txbuflen%64 == 0) {
 798                 pad = 1;
 799                 txbuflen++;
 800         }
 801         txbuf[0] = 0xAA;
 802         txbuf[1] = 0xAA;
 803         txbuf[2] = 0x03;
 804         txbuf[3] = 0x00;        /* rfc1042 */
 805         txbuf[4] = 0x00;
 806         txbuf[5] = 0x00;
 807
 808         skb_copy_from_linear_data_offset(skb, 12, txbuf + 6, skb->len - 12);
 809         if (pad)
 810                 txbuf[skb->len-12+6]=0;
 811         skb_copy_from_linear_data(skb, txbuf + skb->len - 12 + 6 + pad, 12);
 812         *(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
 813         txbuf[txbuflen-1] = 0;
 814
 815         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
 816             txbuf, txbuflen, zd1201_usbtx, zd);
 817
 818         err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
 819         if (err) {
 820                 dev->stats.tx_errors++;
 821                 netif_start_queue(dev);
 822         } else {
 823                 dev->stats.tx_packets++;
 824                 dev->stats.tx_bytes += skb->len;
 825         }
 826         kfree_skb(skb);
 827
 828         return NETDEV_TX_OK;
 829 }
 830
 831 static void zd1201_tx_timeout(struct net_device *dev, unsigned int txqueue)
 832 {
 833         struct zd1201 *zd = netdev_priv(dev);
 834
 835         if (!zd)
 836                 return;
 837         dev_warn(&zd->usb->dev, "%s: TX timeout, shooting down urb\n",
 838             dev->name);
 839         usb_unlink_urb(zd->tx_urb);
 840         dev->stats.tx_errors++;
 841         /* Restart the timeout to quiet the watchdog: */
 842         netif_trans_update(dev); /* prevent tx timeout */
 843 }
 844
 845 static int zd1201_set_mac_address(struct net_device *dev, void *p)
 846 {
 847         struct sockaddr *addr = p;
 848         struct zd1201 *zd = netdev_priv(dev);
 849         int err;
 850
 851         if (!zd)
 852                 return -ENODEV;
 853
 854         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 855             addr->sa_data, dev->addr_len, 1);
 856         if (err)
 857                 return err;
 858         eth_hw_addr_set(dev, addr->sa_data);
 859
 860         return zd1201_mac_reset(zd);
 861 }
 862
 863 static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
 864 {
 865         struct zd1201 *zd = netdev_priv(dev);
 866
 867         return &zd->iwstats;
 868 }
 869
 870 static void zd1201_set_multicast(struct net_device *dev)
 871 {
 872         struct zd1201 *zd = netdev_priv(dev);
 873         struct netdev_hw_addr *ha;
 874         unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
 875         int i;
 876
 877         if (netdev_mc_count(dev) > ZD1201_MAXMULTI)
 878                 return;
 879
 880         i = 0;
 881         netdev_for_each_mc_addr(ha, dev)
 882                 memcpy(reqbuf + i++ * ETH_ALEN, ha->addr, ETH_ALEN);
 883         zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
 884                          netdev_mc_count(dev) * ETH_ALEN, 0);
 885 }
 886
 887 static int zd1201_config_commit(struct net_device *dev,
 888     struct iw_request_info *info, struct iw_point *data, char *essid)
 889 {
 890         struct zd1201 *zd = netdev_priv(dev);
 891
 892         return zd1201_mac_reset(zd);
 893 }
 894
 895 static int zd1201_get_name(struct net_device *dev,
 896     struct iw_request_info *info, char *name, char *extra)
 897 {
 898         strcpy(name, "IEEE 802.11b");
 899         return 0;
 900 }
 901
 902 static int zd1201_set_freq(struct net_device *dev,
 903     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 904 {
 905         struct zd1201 *zd = netdev_priv(dev);
 906         short channel = 0;
 907         int err;
 908
 909         if (freq->e == 0)
 910                 channel = freq->m;
 911         else
 912                 channel = ieee80211_frequency_to_channel(freq->m);
 913
 914         err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
 915         if (err)
 916                 return err;
 917
 918         zd1201_mac_reset(zd);
 919
 920         return 0;
 921 }
 922
 923 static int zd1201_get_freq(struct net_device *dev,
 924     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 925 {
 926         struct zd1201 *zd = netdev_priv(dev);
 927         short channel;
 928         int err;
 929
 930         err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
 931         if (err)
 932                 return err;
 933         freq->e = 0;
 934         freq->m = channel;
 935
 936         return 0;
 937 }
 938
 939 static int zd1201_set_mode(struct net_device *dev,
 940     struct iw_request_info *info, __u32 *mode, char *extra)
 941 {
 942         struct zd1201 *zd = netdev_priv(dev);
 943         short porttype, monitor = 0;
 944         unsigned char buffer[IW_ESSID_MAX_SIZE+2];
 945         int err;
 946
 947         if (zd->ap) {
 948                 if (*mode != IW_MODE_MASTER)
 949                         return -EINVAL;
 950                 return 0;
 951         }
 952
 953         err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 954         if (err)
 955                 return err;
 956         zd->dev->type = ARPHRD_ETHER;
 957         switch(*mode) {
 958                 case IW_MODE_MONITOR:
 959                         monitor = 1;
 960                         zd->dev->type = ARPHRD_IEEE80211;
 961                         /* Make sure we are no longer associated with by
 962                            setting an 'impossible' essid.
 963                            (otherwise we mess up firmware)
 964                          */
 965                         zd1201_join(zd, "\0-*#\0", 5);
 966                         /* Put port in pIBSS */
 967                         fallthrough;
 968                 case 8: /* No pseudo-IBSS in wireless extensions (yet) */
 969                         porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
 970                         break;
 971                 case IW_MODE_ADHOC:
 972                         porttype = ZD1201_PORTTYPE_IBSS;
 973                         break;
 974                 case IW_MODE_INFRA:
 975                         porttype = ZD1201_PORTTYPE_BSS;
 976                         break;
 977                 default:
 978                         return -EINVAL;
 979         }
 980
 981         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
 982         if (err)
 983                 return err;
 984         if (zd->monitor && !monitor) {
 985                         zd1201_disable(zd);
 986                         *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
 987                         memcpy(buffer+2, zd->essid, zd->essidlen);
 988                         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
 989                             buffer, IW_ESSID_MAX_SIZE+2, 1);
 990                         if (err)
 991                                 return err;
 992         }
 993         zd->monitor = monitor;
 994         /* If monitor mode is set we don't actually turn it on here since it
 995          * is done during mac reset anyway (see zd1201_mac_enable).
 996          */
 997         zd1201_mac_reset(zd);
 998
 999         return 0;
1000 }
1001
1002 static int zd1201_get_mode(struct net_device *dev,
1003     struct iw_request_info *info, __u32 *mode, char *extra)
1004 {
1005         struct zd1201 *zd = netdev_priv(dev);
1006         short porttype;
1007         int err;
1008
1009         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1010         if (err)
1011                 return err;
1012         switch(porttype) {
1013                 case ZD1201_PORTTYPE_IBSS:
1014                         *mode = IW_MODE_ADHOC;
1015                         break;
1016                 case ZD1201_PORTTYPE_BSS:
1017                         *mode = IW_MODE_INFRA;
1018                         break;
1019                 case ZD1201_PORTTYPE_WDS:
1020                         *mode = IW_MODE_REPEAT;
1021                         break;
1022                 case ZD1201_PORTTYPE_PSEUDOIBSS:
1023                         *mode = 8;/* No Pseudo-IBSS... */
1024                         break;
1025                 case ZD1201_PORTTYPE_AP:
1026                         *mode = IW_MODE_MASTER;
1027                         break;
1028                 default:
1029                         dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1030                             porttype);
1031                         *mode = IW_MODE_AUTO;
1032         }
1033         if (zd->monitor)
1034                 *mode = IW_MODE_MONITOR;
1035
1036         return 0;
1037 }
1038
1039 static int zd1201_get_range(struct net_device *dev,
1040     struct iw_request_info *info, struct iw_point *wrq, char *extra)
1041 {
1042         struct iw_range *range = (struct iw_range *)extra;
1043
1044         wrq->length = sizeof(struct iw_range);
1045         memset(range, 0, sizeof(struct iw_range));
1046         range->we_version_compiled = WIRELESS_EXT;
1047         range->we_version_source = WIRELESS_EXT;
1048
1049         range->max_qual.qual = 128;
1050         range->max_qual.level = 128;
1051         range->max_qual.noise = 128;
1052         range->max_qual.updated = 7;
1053
1054         range->encoding_size[0] = 5;
1055         range->encoding_size[1] = 13;
1056         range->num_encoding_sizes = 2;
1057         range->max_encoding_tokens = ZD1201_NUMKEYS;
1058
1059         range->num_bitrates = 4;
1060         range->bitrate[0] = 1000000;
1061         range->bitrate[1] = 2000000;
1062         range->bitrate[2] = 5500000;
1063         range->bitrate[3] = 11000000;
1064
1065         range->min_rts = 0;
1066         range->min_frag = ZD1201_FRAGMIN;
1067         range->max_rts = ZD1201_RTSMAX;
1068         range->min_frag = ZD1201_FRAGMAX;
1069
1070         return 0;
1071 }
1072
1073 /*      Little bit of magic here: we only get the quality if we poll
1074  *      for it, and we never get an actual request to trigger such
1075  *      a poll. Therefore we 'assume' that the user will soon ask for
1076  *      the stats after asking the bssid.
1077  */
1078 static int zd1201_get_wap(struct net_device *dev,
1079     struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1080 {
1081         struct zd1201 *zd = netdev_priv(dev);
1082         unsigned char buffer[6];
1083
1084         if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1085                 /* Unfortunately the quality and noise reported is useless.
1086                    they seem to be accumulators that increase until you
1087                    read them, unless we poll on a fixed interval we can't
1088                    use them
1089                  */
1090                 /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1091                 zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1092                 /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1093                 zd->iwstats.qual.updated = 2;
1094         }
1095
1096         return zd1201_getconfig(zd, ZD1201_RID_CURRENTBSSID, ap_addr->sa_data, 6);
1097 }
1098
1099 static int zd1201_set_scan(struct net_device *dev,
1100     struct iw_request_info *info, struct iw_point *srq, char *extra)
1101 {
1102         /* We do everything in get_scan */
1103         return 0;
1104 }
1105
1106 static int zd1201_get_scan(struct net_device *dev,
1107     struct iw_request_info *info, struct iw_point *srq, char *extra)
1108 {
1109         struct zd1201 *zd = netdev_priv(dev);
1110         int err, i, j, enabled_save;
1111         struct iw_event iwe;
1112         char *cev = extra;
1113         char *end_buf = extra + IW_SCAN_MAX_DATA;
1114
1115         /* No scanning in AP mode */
1116         if (zd->ap)
1117                 return -EOPNOTSUPP;
1118
1119         /* Scan doesn't seem to work if disabled */
1120         enabled_save = zd->mac_enabled;
1121         zd1201_enable(zd);
1122
1123         zd->rxdatas = 0;
1124         err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE,
1125              ZD1201_INQ_SCANRESULTS, 0, 0);
1126         if (err)
1127                 return err;
1128
1129         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1130         if (!zd->rxlen)
1131                 return -EIO;
1132
1133         if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1134                 return -EIO;
1135
1136         for(i=8; i<zd->rxlen; i+=62) {
1137                 iwe.cmd = SIOCGIWAP;
1138                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1139                 memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1140                 cev = iwe_stream_add_event(info, cev, end_buf,
1141                                            &iwe, IW_EV_ADDR_LEN);
1142
1143                 iwe.cmd = SIOCGIWESSID;
1144                 iwe.u.data.length = zd->rxdata[i+16];
1145                 iwe.u.data.flags = 1;
1146                 cev = iwe_stream_add_point(info, cev, end_buf,
1147                                            &iwe, zd->rxdata+i+18);
1148
1149                 iwe.cmd = SIOCGIWMODE;
1150                 if (zd->rxdata[i+14]&0x01)
1151                         iwe.u.mode = IW_MODE_MASTER;
1152                 else
1153                         iwe.u.mode = IW_MODE_ADHOC;
1154                 cev = iwe_stream_add_event(info, cev, end_buf,
1155                                            &iwe, IW_EV_UINT_LEN);
1156
1157                 iwe.cmd = SIOCGIWFREQ;
1158                 iwe.u.freq.m = zd->rxdata[i+0];
1159                 iwe.u.freq.e = 0;
1160                 cev = iwe_stream_add_event(info, cev, end_buf,
1161                                            &iwe, IW_EV_FREQ_LEN);
1162
1163                 iwe.cmd = SIOCGIWRATE;
1164                 iwe.u.bitrate.fixed = 0;
1165                 iwe.u.bitrate.disabled = 0;
1166                 for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
1167                         iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
1168                         cev = iwe_stream_add_event(info, cev, end_buf,
1169                                                    &iwe, IW_EV_PARAM_LEN);
1170                 }
1171
1172                 iwe.cmd = SIOCGIWENCODE;
1173                 iwe.u.data.length = 0;
1174                 if (zd->rxdata[i+14]&0x10)
1175                         iwe.u.data.flags = IW_ENCODE_ENABLED;
1176                 else
1177                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1178                 cev = iwe_stream_add_point(info, cev, end_buf, &iwe, NULL);
1179
1180                 iwe.cmd = IWEVQUAL;
1181                 iwe.u.qual.qual = zd->rxdata[i+4];
1182                 iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
1183                 iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
1184                 iwe.u.qual.updated = 7;
1185                 cev = iwe_stream_add_event(info, cev, end_buf,
1186                                            &iwe, IW_EV_QUAL_LEN);
1187         }
1188
1189         if (!enabled_save)
1190                 zd1201_disable(zd);
1191
1192         srq->length = cev - extra;
1193         srq->flags = 0;
1194
1195         return 0;
1196 }
1197
1198 static int zd1201_set_essid(struct net_device *dev,
1199     struct iw_request_info *info, struct iw_point *data, char *essid)
1200 {
1201         struct zd1201 *zd = netdev_priv(dev);
1202
1203         if (data->length > IW_ESSID_MAX_SIZE)
1204                 return -EINVAL;
1205         if (data->length < 1)
1206                 data->length = 1;
1207         zd->essidlen = data->length;
1208         memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1209         memcpy(zd->essid, essid, data->length);
1210         return zd1201_join(zd, zd->essid, zd->essidlen);
1211 }
1212
1213 static int zd1201_get_essid(struct net_device *dev,
1214     struct iw_request_info *info, struct iw_point *data, char *essid)
1215 {
1216         struct zd1201 *zd = netdev_priv(dev);
1217
1218         memcpy(essid, zd->essid, zd->essidlen);
1219         data->flags = 1;
1220         data->length = zd->essidlen;
1221
1222         return 0;
1223 }
1224
1225 static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1226     struct iw_point *data, char *nick)
1227 {
1228         strcpy(nick, "zd1201");
1229         data->flags = 1;
1230         data->length = strlen(nick);
1231         return 0;
1232 }
1233
1234 static int zd1201_set_rate(struct net_device *dev,
1235     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1236 {
1237         struct zd1201 *zd = netdev_priv(dev);
1238         short rate;
1239         int err;
1240
1241         switch (rrq->value) {
1242                 case 1000000:
1243                         rate = ZD1201_RATEB1;
1244                         break;
1245                 case 2000000:
1246                         rate = ZD1201_RATEB2;
1247                         break;
1248                 case 5500000:
1249                         rate = ZD1201_RATEB5;
1250                         break;
1251                 case 11000000:
1252                 default:
1253                         rate = ZD1201_RATEB11;
1254                         break;
1255         }
1256         if (!rrq->fixed) { /* Also enable all lower bitrates */
1257                 rate |= rate-1;
1258         }
1259
1260         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1261         if (err)
1262                 return err;
1263
1264         return zd1201_mac_reset(zd);
1265 }
1266
1267 static int zd1201_get_rate(struct net_device *dev,
1268     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1269 {
1270         struct zd1201 *zd = netdev_priv(dev);
1271         short rate;
1272         int err;
1273
1274         err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1275         if (err)
1276                 return err;
1277
1278         switch(rate) {
1279                 case 1:
1280                         rrq->value = 1000000;
1281                         break;
1282                 case 2:
1283                         rrq->value = 2000000;
1284                         break;
1285                 case 5:
1286                         rrq->value = 5500000;
1287                         break;
1288                 case 11:
1289                         rrq->value = 11000000;
1290                         break;
1291                 default:
1292                         rrq->value = 0;
1293         }
1294         rrq->fixed = 0;
1295         rrq->disabled = 0;
1296
1297         return 0;
1298 }
1299
1300 static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1301     struct iw_param *rts, char *extra)
1302 {
1303         struct zd1201 *zd = netdev_priv(dev);
1304         int err;
1305         short val = rts->value;
1306
1307         if (rts->disabled || !rts->fixed)
1308                 val = ZD1201_RTSMAX;
1309         if (val > ZD1201_RTSMAX)
1310                 return -EINVAL;
1311         if (val < 0)
1312                 return -EINVAL;
1313
1314         err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1315         if (err)
1316                 return err;
1317         return zd1201_mac_reset(zd);
1318 }
1319
1320 static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1321     struct iw_param *rts, char *extra)
1322 {
1323         struct zd1201 *zd = netdev_priv(dev);
1324         short rtst;
1325         int err;
1326
1327         err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1328         if (err)
1329                 return err;
1330         rts->value = rtst;
1331         rts->disabled = (rts->value == ZD1201_RTSMAX);
1332         rts->fixed = 1;
1333
1334         return 0;
1335 }
1336
1337 static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1338     struct iw_param *frag, char *extra)
1339 {
1340         struct zd1201 *zd = netdev_priv(dev);
1341         int err;
1342         short val = frag->value;
1343
1344         if (frag->disabled || !frag->fixed)
1345                 val = ZD1201_FRAGMAX;
1346         if (val > ZD1201_FRAGMAX)
1347                 return -EINVAL;
1348         if (val < ZD1201_FRAGMIN)
1349                 return -EINVAL;
1350         if (val & 1)
1351                 return -EINVAL;
1352         err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1353         if (err)
1354                 return err;
1355         return zd1201_mac_reset(zd);
1356 }
1357
1358 static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1359     struct iw_param *frag, char *extra)
1360 {
1361         struct zd1201 *zd = netdev_priv(dev);
1362         short fragt;
1363         int err;
1364
1365         err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1366         if (err)
1367                 return err;
1368         frag->value = fragt;
1369         frag->disabled = (frag->value == ZD1201_FRAGMAX);
1370         frag->fixed = 1;
1371
1372         return 0;
1373 }
1374
1375 static int zd1201_set_retry(struct net_device *dev,
1376     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1377 {
1378         return 0;
1379 }
1380
1381 static int zd1201_get_retry(struct net_device *dev,
1382     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1383 {
1384         return 0;
1385 }
1386
1387 static int zd1201_set_encode(struct net_device *dev,
1388     struct iw_request_info *info, struct iw_point *erq, char *key)
1389 {
1390         struct zd1201 *zd = netdev_priv(dev);
1391         short i;
1392         int err, rid;
1393
1394         if (erq->length > ZD1201_MAXKEYLEN)
1395                 return -EINVAL;
1396
1397         i = (erq->flags & IW_ENCODE_INDEX)-1;
1398         if (i == -1) {
1399                 err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1400                 if (err)
1401                         return err;
1402         } else {
1403                 err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1404                 if (err)
1405                         return err;
1406         }
1407
1408         if (i < 0 || i >= ZD1201_NUMKEYS)
1409                 return -EINVAL;
1410
1411         rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1412         err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1413         if (err)
1414                 return err;
1415         zd->encode_keylen[i] = erq->length;
1416         memcpy(zd->encode_keys[i], key, erq->length);
1417
1418         i=0;
1419         if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1420                 i |= 0x01;
1421                 zd->encode_enabled = 1;
1422         } else
1423                 zd->encode_enabled = 0;
1424         if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1425                 i |= 0x02;
1426                 zd->encode_restricted = 1;
1427         } else
1428                 zd->encode_restricted = 0;
1429         err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1430         if (err)
1431                 return err;
1432
1433         if (zd->encode_enabled)
1434                 i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1435         else
1436                 i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1437         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1438         if (err)
1439                 return err;
1440
1441         return zd1201_mac_reset(zd);
1442 }
1443
1444 static int zd1201_get_encode(struct net_device *dev,
1445     struct iw_request_info *info, struct iw_point *erq, char *key)
1446 {
1447         struct zd1201 *zd = netdev_priv(dev);
1448         short i;
1449         int err;
1450
1451         if (zd->encode_enabled)
1452                 erq->flags = IW_ENCODE_ENABLED;
1453         else
1454                 erq->flags = IW_ENCODE_DISABLED;
1455         if (zd->encode_restricted)
1456                 erq->flags |= IW_ENCODE_RESTRICTED;
1457         else
1458                 erq->flags |= IW_ENCODE_OPEN;
1459
1460         i = (erq->flags & IW_ENCODE_INDEX) -1;
1461         if (i == -1) {
1462                 err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1463                 if (err)
1464                         return err;
1465         }
1466         if (i<0 || i>= ZD1201_NUMKEYS)
1467                 return -EINVAL;
1468
1469         erq->flags |= i+1;
1470
1471         erq->length = zd->encode_keylen[i];
1472         memcpy(key, zd->encode_keys[i], erq->length);
1473
1474         return 0;
1475 }
1476
1477 static int zd1201_set_power(struct net_device *dev,
1478     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1479 {
1480         struct zd1201 *zd = netdev_priv(dev);
1481         short enabled, duration, level;
1482         int err;
1483
1484         enabled = vwrq->disabled ? 0 : 1;
1485         if (enabled) {
1486                 if (vwrq->flags & IW_POWER_PERIOD) {
1487                         duration = vwrq->value;
1488                         err = zd1201_setconfig16(zd,
1489                             ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1490                         if (err)
1491                                 return err;
1492                         goto out;
1493                 }
1494                 if (vwrq->flags & IW_POWER_TIMEOUT) {
1495                         err = zd1201_getconfig16(zd,
1496                             ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1497                         if (err)
1498                                 return err;
1499                         level = vwrq->value * 4 / duration;
1500                         if (level > 4)
1501                                 level = 4;
1502                         if (level < 0)
1503                                 level = 0;
1504                         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1505                             level);
1506                         if (err)
1507                                 return err;
1508                         goto out;
1509                 }
1510                 return -EINVAL;
1511         }
1512 out:
1513         return zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1514 }
1515
1516 static int zd1201_get_power(struct net_device *dev,
1517     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1518 {
1519         struct zd1201 *zd = netdev_priv(dev);
1520         short enabled, level, duration;
1521         int err;
1522
1523         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1524         if (err)
1525                 return err;
1526         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1527         if (err)
1528                 return err;
1529         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1530         if (err)
1531                 return err;
1532         vwrq->disabled = enabled ? 0 : 1;
1533         if (vwrq->flags & IW_POWER_TYPE) {
1534                 if (vwrq->flags & IW_POWER_PERIOD) {
1535                         vwrq->value = duration;
1536                         vwrq->flags = IW_POWER_PERIOD;
1537                 } else {
1538                         vwrq->value = duration * level / 4;
1539                         vwrq->flags = IW_POWER_TIMEOUT;
1540                 }
1541         }
1542         if (vwrq->flags & IW_POWER_MODE) {
1543                 if (enabled && level)
1544                         vwrq->flags = IW_POWER_UNICAST_R;
1545                 else
1546                         vwrq->flags = IW_POWER_ALL_R;
1547         }
1548
1549         return 0;
1550 }
1551
1552
1553 static const iw_handler zd1201_iw_handler[] =
1554 {
1555         (iw_handler) zd1201_config_commit,      /* SIOCSIWCOMMIT */
1556         (iw_handler) zd1201_get_name,           /* SIOCGIWNAME */
1557         (iw_handler) NULL,                      /* SIOCSIWNWID */
1558         (iw_handler) NULL,                      /* SIOCGIWNWID */
1559         (iw_handler) zd1201_set_freq,           /* SIOCSIWFREQ */
1560         (iw_handler) zd1201_get_freq,           /* SIOCGIWFREQ */
1561         (iw_handler) zd1201_set_mode,           /* SIOCSIWMODE */
1562         (iw_handler) zd1201_get_mode,           /* SIOCGIWMODE */
1563         (iw_handler) NULL,                      /* SIOCSIWSENS */
1564         (iw_handler) NULL,                      /* SIOCGIWSENS */
1565         (iw_handler) NULL,                      /* SIOCSIWRANGE */
1566         (iw_handler) zd1201_get_range,           /* SIOCGIWRANGE */
1567         (iw_handler) NULL,                      /* SIOCSIWPRIV */
1568         (iw_handler) NULL,                      /* SIOCGIWPRIV */
1569         (iw_handler) NULL,                      /* SIOCSIWSTATS */
1570         (iw_handler) NULL,                      /* SIOCGIWSTATS */
1571         (iw_handler) NULL,                      /* SIOCSIWSPY */
1572         (iw_handler) NULL,                      /* SIOCGIWSPY */
1573         (iw_handler) NULL,                      /* -- hole -- */
1574         (iw_handler) NULL,                      /* -- hole -- */
1575         (iw_handler) NULL/*zd1201_set_wap*/,            /* SIOCSIWAP */
1576         (iw_handler) zd1201_get_wap,            /* SIOCGIWAP */
1577         (iw_handler) NULL,                      /* -- hole -- */
1578         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
1579         (iw_handler) zd1201_set_scan,           /* SIOCSIWSCAN */
1580         (iw_handler) zd1201_get_scan,           /* SIOCGIWSCAN */
1581         (iw_handler) zd1201_set_essid,          /* SIOCSIWESSID */
1582         (iw_handler) zd1201_get_essid,          /* SIOCGIWESSID */
1583         (iw_handler) NULL,                      /* SIOCSIWNICKN */
1584         (iw_handler) zd1201_get_nick,           /* SIOCGIWNICKN */
1585         (iw_handler) NULL,                      /* -- hole -- */
1586         (iw_handler) NULL,                      /* -- hole -- */
1587         (iw_handler) zd1201_set_rate,           /* SIOCSIWRATE */
1588         (iw_handler) zd1201_get_rate,           /* SIOCGIWRATE */
1589         (iw_handler) zd1201_set_rts,            /* SIOCSIWRTS */
1590         (iw_handler) zd1201_get_rts,            /* SIOCGIWRTS */
1591         (iw_handler) zd1201_set_frag,           /* SIOCSIWFRAG */
1592         (iw_handler) zd1201_get_frag,           /* SIOCGIWFRAG */
1593         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
1594         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
1595         (iw_handler) zd1201_set_retry,          /* SIOCSIWRETRY */
1596         (iw_handler) zd1201_get_retry,          /* SIOCGIWRETRY */
1597         (iw_handler) zd1201_set_encode,         /* SIOCSIWENCODE */
1598         (iw_handler) zd1201_get_encode,         /* SIOCGIWENCODE */
1599         (iw_handler) zd1201_set_power,          /* SIOCSIWPOWER */
1600         (iw_handler) zd1201_get_power,          /* SIOCGIWPOWER */
1601 };
1602
1603 static int zd1201_set_hostauth(struct net_device *dev,
1604     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1605 {
1606         struct zd1201 *zd = netdev_priv(dev);
1607
1608         if (!zd->ap)
1609                 return -EOPNOTSUPP;
1610
1611         return zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1612 }
1613
1614 static int zd1201_get_hostauth(struct net_device *dev,
1615     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1616 {
1617         struct zd1201 *zd = netdev_priv(dev);
1618         short hostauth;
1619         int err;
1620
1621         if (!zd->ap)
1622                 return -EOPNOTSUPP;
1623
1624         err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1625         if (err)
1626                 return err;
1627         rrq->value = hostauth;
1628         rrq->fixed = 1;
1629
1630         return 0;
1631 }
1632
1633 static int zd1201_auth_sta(struct net_device *dev,
1634     struct iw_request_info *info, struct sockaddr *sta, char *extra)
1635 {
1636         struct zd1201 *zd = netdev_priv(dev);
1637         unsigned char buffer[10];
1638
1639         if (!zd->ap)
1640                 return -EOPNOTSUPP;
1641
1642         memcpy(buffer, sta->sa_data, ETH_ALEN);
1643         *(short*)(buffer+6) = 0;        /* 0==success, 1==failure */
1644         *(short*)(buffer+8) = 0;
1645
1646         return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1647 }
1648
1649 static int zd1201_set_maxassoc(struct net_device *dev,
1650     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1651 {
1652         struct zd1201 *zd = netdev_priv(dev);
1653
1654         if (!zd->ap)
1655                 return -EOPNOTSUPP;
1656
1657         return zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1658 }
1659
1660 static int zd1201_get_maxassoc(struct net_device *dev,
1661     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1662 {
1663         struct zd1201 *zd = netdev_priv(dev);
1664         short maxassoc;
1665         int err;
1666
1667         if (!zd->ap)
1668                 return -EOPNOTSUPP;
1669
1670         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1671         if (err)
1672                 return err;
1673         rrq->value = maxassoc;
1674         rrq->fixed = 1;
1675
1676         return 0;
1677 }
1678
1679 static const iw_handler zd1201_private_handler[] = {
1680         (iw_handler) zd1201_set_hostauth,       /* ZD1201SIWHOSTAUTH */
1681         (iw_handler) zd1201_get_hostauth,       /* ZD1201GIWHOSTAUTH */
1682         (iw_handler) zd1201_auth_sta,           /* ZD1201SIWAUTHSTA */
1683         (iw_handler) NULL,                      /* nothing to get */
1684         (iw_handler) zd1201_set_maxassoc,       /* ZD1201SIMAXASSOC */
1685         (iw_handler) zd1201_get_maxassoc,       /* ZD1201GIMAXASSOC */
1686 };
1687
1688 static const struct iw_priv_args zd1201_private_args[] = {
1689         { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1690             IW_PRIV_TYPE_NONE, "sethostauth" },
1691         { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1692             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1693         { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1694             IW_PRIV_TYPE_NONE, "authstation" },
1695         { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1696             IW_PRIV_TYPE_NONE, "setmaxassoc" },
1697         { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1698             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1699 };
1700
1701 static const struct iw_handler_def zd1201_iw_handlers = {
1702         .num_standard           = ARRAY_SIZE(zd1201_iw_handler),
1703         .num_private            = ARRAY_SIZE(zd1201_private_handler),
1704         .num_private_args       = ARRAY_SIZE(zd1201_private_args),
1705         .standard               = (iw_handler *)zd1201_iw_handler,
1706         .private                = (iw_handler *)zd1201_private_handler,
1707         .private_args           = (struct iw_priv_args *) zd1201_private_args,
1708         .get_wireless_stats     = zd1201_get_wireless_stats,
1709 };
1710
1711 static const struct net_device_ops zd1201_netdev_ops = {
1712         .ndo_open               = zd1201_net_open,
1713         .ndo_stop               = zd1201_net_stop,
1714         .ndo_start_xmit         = zd1201_hard_start_xmit,
1715         .ndo_tx_timeout         = zd1201_tx_timeout,
1716         .ndo_set_rx_mode        = zd1201_set_multicast,
1717         .ndo_set_mac_address    = zd1201_set_mac_address,
1718         .ndo_validate_addr      = eth_validate_addr,
1719 };
1720
1721 static int zd1201_probe(struct usb_interface *interface,
1722                         const struct usb_device_id *id)
1723 {
1724         struct zd1201 *zd;
1725         struct net_device *dev;
1726         struct usb_device *usb;
1727         int err;
1728         short porttype;
1729         char buf[IW_ESSID_MAX_SIZE+2];
1730         u8 addr[ETH_ALEN];
1731
1732         usb = interface_to_usbdev(interface);
1733
1734         dev = alloc_etherdev(sizeof(*zd));
1735         if (!dev)
1736                 return -ENOMEM;
1737         zd = netdev_priv(dev);
1738         zd->dev = dev;
1739
1740         zd->ap = ap;
1741         zd->usb = usb;
1742         zd->removed = 0;
1743         init_waitqueue_head(&zd->rxdataq);
1744         INIT_HLIST_HEAD(&zd->fraglist);
1745
1746         err = zd1201_fw_upload(usb, zd->ap);
1747         if (err) {
1748                 dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
1749                 goto err_zd;
1750         }
1751
1752         zd->endp_in = 1;
1753         zd->endp_out = 1;
1754         zd->endp_out2 = 2;
1755         zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1756         zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1757         if (!zd->rx_urb || !zd->tx_urb) {
1758                 err = -ENOMEM;
1759                 goto err_zd;
1760         }
1761
1762         mdelay(100);
1763         err = zd1201_drvr_start(zd);
1764         if (err)
1765                 goto err_zd;
1766
1767         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
1768         if (err)
1769                 goto err_start;
1770
1771         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
1772             ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
1773         if (err)
1774                 goto err_start;
1775
1776         dev->netdev_ops = &zd1201_netdev_ops;
1777         dev->wireless_handlers = &zd1201_iw_handlers;
1778         dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
1779         strcpy(dev->name, "wlan%d");
1780
1781         err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR, addr, ETH_ALEN);
1782         if (err)
1783                 goto err_start;
1784         eth_hw_addr_set(dev, addr);
1785
1786         /* Set wildcard essid to match zd->essid */
1787         *(__le16 *)buf = cpu_to_le16(0);
1788         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
1789             IW_ESSID_MAX_SIZE+2, 1);
1790         if (err)
1791                 goto err_start;
1792
1793         if (zd->ap)
1794                 porttype = ZD1201_PORTTYPE_AP;
1795         else
1796                 porttype = ZD1201_PORTTYPE_BSS;
1797         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1798         if (err)
1799                 goto err_start;
1800
1801         SET_NETDEV_DEV(dev, &usb->dev);
1802
1803         err = register_netdev(dev);
1804         if (err)
1805                 goto err_start;
1806         dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
1807             dev->name);
1808
1809         usb_set_intfdata(interface, zd);
1810         zd1201_enable(zd);      /* zd1201 likes to startup enabled, */
1811         zd1201_disable(zd);     /* interfering with all the wifis in range */
1812         return 0;
1813
1814 err_start:
1815         /* Leave the device in reset state */
1816         zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
1817 err_zd:
1818         usb_free_urb(zd->tx_urb);
1819         usb_free_urb(zd->rx_urb);
1820         free_netdev(dev);
1821         return err;
1822 }
1823
1824 static void zd1201_disconnect(struct usb_interface *interface)
1825 {
1826         struct zd1201 *zd = usb_get_intfdata(interface);
1827         struct hlist_node *node2;
1828         struct zd1201_frag *frag;
1829
1830         if (!zd)
1831                 return;
1832         usb_set_intfdata(interface, NULL);
1833
1834         hlist_for_each_entry_safe(frag, node2, &zd->fraglist, fnode) {
1835                 hlist_del_init(&frag->fnode);
1836                 kfree_skb(frag->skb);
1837                 kfree(frag);
1838         }
1839
1840         if (zd->tx_urb) {
1841                 usb_kill_urb(zd->tx_urb);
1842                 usb_free_urb(zd->tx_urb);
1843         }
1844         if (zd->rx_urb) {
1845                 usb_kill_urb(zd->rx_urb);
1846                 usb_free_urb(zd->rx_urb);
1847         }
1848
1849         if (zd->dev) {
1850                 unregister_netdev(zd->dev);
1851                 free_netdev(zd->dev);
1852         }
1853 }
1854
1855 #ifdef CONFIG_PM
1856
1857 static int zd1201_suspend(struct usb_interface *interface,
1858                            pm_message_t message)
1859 {
1860         struct zd1201 *zd = usb_get_intfdata(interface);
1861
1862         netif_device_detach(zd->dev);
1863
1864         zd->was_enabled = zd->mac_enabled;
1865
1866         if (zd->was_enabled)
1867                 return zd1201_disable(zd);
1868         else
1869                 return 0;
1870 }
1871
1872 static int zd1201_resume(struct usb_interface *interface)
1873 {
1874         struct zd1201 *zd = usb_get_intfdata(interface);
1875
1876         if (!zd || !zd->dev)
1877                 return -ENODEV;
1878
1879         netif_device_attach(zd->dev);
1880
1881         if (zd->was_enabled)
1882                 return zd1201_enable(zd);
1883         else
1884                 return 0;
1885 }
1886
1887 #else
1888
1889 #define zd1201_suspend NULL
1890 #define zd1201_resume  NULL
1891
1892 #endif
1893
1894 static struct usb_driver zd1201_usb = {
1895         .name = "zd1201",
1896         .probe = zd1201_probe,
1897         .disconnect = zd1201_disconnect,
1898         .id_table = zd1201_table,
1899         .suspend = zd1201_suspend,
1900         .resume = zd1201_resume,
1901         .disable_hub_initiated_lpm = 1,
1902 };
1903
1904 module_usb_driver(zd1201_usb);