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, 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 = kmalloc(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                 memset(request, 0, 16);
 532                 reqlen = len>12 ? 12 : len;
 533                 request[0] = ZD1201_USB_RESREQ;
 534                 request[1] = seq;
 535                 request[2] = 0;
 536                 request[3] = 0;
 537                 if (request[1] == 0) {
 538                         /* add header */
 539                         *(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
 540                         *(__le16*)&request[6] = cpu_to_le16(rid);
 541                         memcpy(request+8, buf, reqlen-4);
 542                         buf += reqlen-4;
 543                 } else {
 544                         memcpy(request+4, buf, reqlen);
 545                         buf += reqlen;
 546                 }
 547
 548                 len -= reqlen;
 549
 550                 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
 551                     zd->endp_out2), request, 16, zd1201_usbfree, zd);
 552                 err = usb_submit_urb(urb, gfp_mask);
 553                 if (err)
 554                         goto err;
 555         }
 556
 557         request = kmalloc(16, gfp_mask);
 558         if (!request)
 559                 return -ENOMEM;
 560         urb = usb_alloc_urb(0, gfp_mask);
 561         if (!urb) {
 562                 kfree(request);
 563                 return -ENOMEM;
 564         }
 565         *((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
 566         *((__le16*)&request[4]) =
 567             cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
 568         *((__le16*)&request[6]) = cpu_to_le16(rid);
 569         *((__le16*)&request[8]) = cpu_to_le16(0);
 570         *((__le16*)&request[10]) = cpu_to_le16(0);
 571         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 572              request, 16, zd1201_usbfree, zd);
 573         err = usb_submit_urb(urb, gfp_mask);
 574         if (err)
 575                 goto err;
 576
 577         if (wait) {
 578                 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 579                 if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
 580                         dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
 581                 }
 582         }
 583
 584         return 0;
 585 err:
 586         kfree(request);
 587         usb_free_urb(urb);
 588         return err;
 589 }
 590
 591 static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
 592 {
 593         int err;
 594         __le16 zdval;
 595
 596         err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
 597         if (err)
 598                 return err;
 599         *val = le16_to_cpu(zdval);
 600         return 0;
 601 }
 602
 603 static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
 604 {
 605         __le16 zdval = cpu_to_le16(val);
 606         return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
 607 }
 608
 609 static int zd1201_drvr_start(struct zd1201 *zd)
 610 {
 611         int err, i;
 612         short max;
 613         __le16 zdmax;
 614         unsigned char *buffer;
 615
 616         buffer = kzalloc(ZD1201_RXSIZE, GFP_KERNEL);
 617         if (!buffer)
 618                 return -ENOMEM;
 619
 620         usb_fill_bulk_urb(zd->rx_urb, zd->usb,
 621             usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
 622             zd1201_usbrx, zd);
 623
 624         err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
 625         if (err)
 626                 goto err_buffer;
 627
 628         err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
 629         if (err)
 630                 goto err_urb;
 631
 632         err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
 633             sizeof(__le16));
 634         if (err)
 635                 goto err_urb;
 636
 637         max = le16_to_cpu(zdmax);
 638         for (i=0; i<max; i++) {
 639                 err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
 640                 if (err)
 641                         goto err_urb;
 642         }
 643
 644         return 0;
 645
 646 err_urb:
 647         usb_kill_urb(zd->rx_urb);
 648         return err;
 649 err_buffer:
 650         kfree(buffer);
 651         return err;
 652 }
 653
 654 /*      Magic alert: The firmware doesn't seem to like the MAC state being
 655  *      toggled in promisc (aka monitor) mode.
 656  *      (It works a number of times, but will halt eventually)
 657  *      So we turn it of before disabling and on after enabling if needed.
 658  */
 659 static int zd1201_enable(struct zd1201 *zd)
 660 {
 661         int err;
 662
 663         if (zd->mac_enabled)
 664                 return 0;
 665
 666         err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
 667         if (!err)
 668                 zd->mac_enabled = 1;
 669
 670         if (zd->monitor)
 671                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
 672
 673         return err;
 674 }
 675
 676 static int zd1201_disable(struct zd1201 *zd)
 677 {
 678         int err;
 679
 680         if (!zd->mac_enabled)
 681                 return 0;
 682         if (zd->monitor) {
 683                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 684                 if (err)
 685                         return err;
 686         }
 687
 688         err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
 689         if (!err)
 690                 zd->mac_enabled = 0;
 691         return err;
 692 }
 693
 694 static int zd1201_mac_reset(struct zd1201 *zd)
 695 {
 696         if (!zd->mac_enabled)
 697                 return 0;
 698         zd1201_disable(zd);
 699         return zd1201_enable(zd);
 700 }
 701
 702 static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
 703 {
 704         int err, val;
 705         char buf[IW_ESSID_MAX_SIZE+2];
 706
 707         err = zd1201_disable(zd);
 708         if (err)
 709                 return err;
 710
 711         val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
 712         val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
 713         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
 714         if (err)
 715                 return err;
 716
 717         *(__le16 *)buf = cpu_to_le16(essidlen);
 718         memcpy(buf+2, essid, essidlen);
 719         if (!zd->ap) {  /* Normal station */
 720                 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
 721                     IW_ESSID_MAX_SIZE+2, 1);
 722                 if (err)
 723                         return err;
 724         } else {        /* AP */
 725                 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
 726                     IW_ESSID_MAX_SIZE+2, 1);
 727                 if (err)
 728                         return err;
 729         }
 730
 731         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 732             zd->dev->dev_addr, zd->dev->addr_len, 1);
 733         if (err)
 734                 return err;
 735
 736         err = zd1201_enable(zd);
 737         if (err)
 738                 return err;
 739
 740         msleep(100);
 741         return 0;
 742 }
 743
 744 static int zd1201_net_open(struct net_device *dev)
 745 {
 746         struct zd1201 *zd = netdev_priv(dev);
 747
 748         /* Start MAC with wildcard if no essid set */
 749         if (!zd->mac_enabled)
 750                 zd1201_join(zd, zd->essid, zd->essidlen);
 751         netif_start_queue(dev);
 752
 753         return 0;
 754 }
 755
 756 static int zd1201_net_stop(struct net_device *dev)
 757 {
 758         netif_stop_queue(dev);
 759         return 0;
 760 }
 761
 762 /*
 763         RFC 1042 encapsulates Ethernet frames in 802.11 frames
 764         by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
 765         (0x00, 0x00, 0x00). Zd requires an additional padding, copy
 766         of ethernet addresses, length of the standard RFC 1042 packet
 767         and a command byte (which is nul for tx).
 768
 769         tx frame (from Wlan NG):
 770         RFC 1042:
 771                 llc             0xAA 0xAA 0x03 (802.2 LLC)
 772                 snap            0x00 0x00 0x00 (Ethernet encapsulated)
 773                 type            2 bytes, Ethernet type field
 774                 payload         (minus eth header)
 775         Zydas specific:
 776                 padding         1B if (skb->len+8+1)%64==0
 777                 Eth MAC addr    12 bytes, Ethernet MAC addresses
 778                 length          2 bytes, RFC 1042 packet length
 779                                 (llc+snap+type+payload)
 780                 zd              1 null byte, zd1201 packet type
 781  */
 782 static netdev_tx_t zd1201_hard_start_xmit(struct sk_buff *skb,
 783                                                 struct net_device *dev)
 784 {
 785         struct zd1201 *zd = netdev_priv(dev);
 786         unsigned char *txbuf = zd->txdata;
 787         int txbuflen, pad = 0, err;
 788         struct urb *urb = zd->tx_urb;
 789
 790         if (!zd->mac_enabled || zd->monitor) {
 791                 dev->stats.tx_dropped++;
 792                 kfree_skb(skb);
 793                 return NETDEV_TX_OK;
 794         }
 795         netif_stop_queue(dev);
 796
 797         txbuflen = skb->len + 8 + 1;
 798         if (txbuflen%64 == 0) {
 799                 pad = 1;
 800                 txbuflen++;
 801         }
 802         txbuf[0] = 0xAA;
 803         txbuf[1] = 0xAA;
 804         txbuf[2] = 0x03;
 805         txbuf[3] = 0x00;        /* rfc1042 */
 806         txbuf[4] = 0x00;
 807         txbuf[5] = 0x00;
 808
 809         skb_copy_from_linear_data_offset(skb, 12, txbuf + 6, skb->len - 12);
 810         if (pad)
 811                 txbuf[skb->len-12+6]=0;
 812         skb_copy_from_linear_data(skb, txbuf + skb->len - 12 + 6 + pad, 12);
 813         *(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
 814         txbuf[txbuflen-1] = 0;
 815
 816         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
 817             txbuf, txbuflen, zd1201_usbtx, zd);
 818
 819         err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
 820         if (err) {
 821                 dev->stats.tx_errors++;
 822                 netif_start_queue(dev);
 823         } else {
 824                 dev->stats.tx_packets++;
 825                 dev->stats.tx_bytes += skb->len;
 826         }
 827         kfree_skb(skb);
 828
 829         return NETDEV_TX_OK;
 830 }
 831
 832 static void zd1201_tx_timeout(struct net_device *dev, unsigned int txqueue)
 833 {
 834         struct zd1201 *zd = netdev_priv(dev);
 835
 836         if (!zd)
 837                 return;
 838         dev_warn(&zd->usb->dev, "%s: TX timeout, shooting down urb\n",
 839             dev->name);
 840         usb_unlink_urb(zd->tx_urb);
 841         dev->stats.tx_errors++;
 842         /* Restart the timeout to quiet the watchdog: */
 843         netif_trans_update(dev); /* prevent tx timeout */
 844 }
 845
 846 static int zd1201_set_mac_address(struct net_device *dev, void *p)
 847 {
 848         struct sockaddr *addr = p;
 849         struct zd1201 *zd = netdev_priv(dev);
 850         int err;
 851
 852         if (!zd)
 853                 return -ENODEV;
 854
 855         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
 856             addr->sa_data, dev->addr_len, 1);
 857         if (err)
 858                 return err;
 859         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
 860
 861         return zd1201_mac_reset(zd);
 862 }
 863
 864 static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
 865 {
 866         struct zd1201 *zd = netdev_priv(dev);
 867
 868         return &zd->iwstats;
 869 }
 870
 871 static void zd1201_set_multicast(struct net_device *dev)
 872 {
 873         struct zd1201 *zd = netdev_priv(dev);
 874         struct netdev_hw_addr *ha;
 875         unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
 876         int i;
 877
 878         if (netdev_mc_count(dev) > ZD1201_MAXMULTI)
 879                 return;
 880
 881         i = 0;
 882         netdev_for_each_mc_addr(ha, dev)
 883                 memcpy(reqbuf + i++ * ETH_ALEN, ha->addr, ETH_ALEN);
 884         zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
 885                          netdev_mc_count(dev) * ETH_ALEN, 0);
 886 }
 887
 888 static int zd1201_config_commit(struct net_device *dev,
 889     struct iw_request_info *info, struct iw_point *data, char *essid)
 890 {
 891         struct zd1201 *zd = netdev_priv(dev);
 892
 893         return zd1201_mac_reset(zd);
 894 }
 895
 896 static int zd1201_get_name(struct net_device *dev,
 897     struct iw_request_info *info, char *name, char *extra)
 898 {
 899         strcpy(name, "IEEE 802.11b");
 900         return 0;
 901 }
 902
 903 static int zd1201_set_freq(struct net_device *dev,
 904     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 905 {
 906         struct zd1201 *zd = netdev_priv(dev);
 907         short channel = 0;
 908         int err;
 909
 910         if (freq->e == 0)
 911                 channel = freq->m;
 912         else
 913                 channel = ieee80211_frequency_to_channel(freq->m);
 914
 915         err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
 916         if (err)
 917                 return err;
 918
 919         zd1201_mac_reset(zd);
 920
 921         return 0;
 922 }
 923
 924 static int zd1201_get_freq(struct net_device *dev,
 925     struct iw_request_info *info, struct iw_freq *freq, char *extra)
 926 {
 927         struct zd1201 *zd = netdev_priv(dev);
 928         short channel;
 929         int err;
 930
 931         err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
 932         if (err)
 933                 return err;
 934         freq->e = 0;
 935         freq->m = channel;
 936
 937         return 0;
 938 }
 939
 940 static int zd1201_set_mode(struct net_device *dev,
 941     struct iw_request_info *info, __u32 *mode, char *extra)
 942 {
 943         struct zd1201 *zd = netdev_priv(dev);
 944         short porttype, monitor = 0;
 945         unsigned char buffer[IW_ESSID_MAX_SIZE+2];
 946         int err;
 947
 948         if (zd->ap) {
 949                 if (*mode != IW_MODE_MASTER)
 950                         return -EINVAL;
 951                 return 0;
 952         }
 953
 954         err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 955         if (err)
 956                 return err;
 957         zd->dev->type = ARPHRD_ETHER;
 958         switch(*mode) {
 959                 case IW_MODE_MONITOR:
 960                         monitor = 1;
 961                         zd->dev->type = ARPHRD_IEEE80211;
 962                         /* Make sure we are no longer associated with by
 963                            setting an 'impossible' essid.
 964                            (otherwise we mess up firmware)
 965                          */
 966                         zd1201_join(zd, "\0-*#\0", 5);
 967                         /* Put port in pIBSS */
 968                         /* Fall through */
 969                 case 8: /* No pseudo-IBSS in wireless extensions (yet) */
 970                         porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
 971                         break;
 972                 case IW_MODE_ADHOC:
 973                         porttype = ZD1201_PORTTYPE_IBSS;
 974                         break;
 975                 case IW_MODE_INFRA:
 976                         porttype = ZD1201_PORTTYPE_BSS;
 977                         break;
 978                 default:
 979                         return -EINVAL;
 980         }
 981
 982         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
 983         if (err)
 984                 return err;
 985         if (zd->monitor && !monitor) {
 986                         zd1201_disable(zd);
 987                         *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
 988                         memcpy(buffer+2, zd->essid, zd->essidlen);
 989                         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
 990                             buffer, IW_ESSID_MAX_SIZE+2, 1);
 991                         if (err)
 992                                 return err;
 993         }
 994         zd->monitor = monitor;
 995         /* If monitor mode is set we don't actually turn it on here since it
 996          * is done during mac reset anyway (see zd1201_mac_enable).
 997          */
 998         zd1201_mac_reset(zd);
 999
1000         return 0;
1001 }
1002
1003 static int zd1201_get_mode(struct net_device *dev,
1004     struct iw_request_info *info, __u32 *mode, char *extra)
1005 {
1006         struct zd1201 *zd = netdev_priv(dev);
1007         short porttype;
1008         int err;
1009
1010         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1011         if (err)
1012                 return err;
1013         switch(porttype) {
1014                 case ZD1201_PORTTYPE_IBSS:
1015                         *mode = IW_MODE_ADHOC;
1016                         break;
1017                 case ZD1201_PORTTYPE_BSS:
1018                         *mode = IW_MODE_INFRA;
1019                         break;
1020                 case ZD1201_PORTTYPE_WDS:
1021                         *mode = IW_MODE_REPEAT;
1022                         break;
1023                 case ZD1201_PORTTYPE_PSEUDOIBSS:
1024                         *mode = 8;/* No Pseudo-IBSS... */
1025                         break;
1026                 case ZD1201_PORTTYPE_AP:
1027                         *mode = IW_MODE_MASTER;
1028                         break;
1029                 default:
1030                         dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1031                             porttype);
1032                         *mode = IW_MODE_AUTO;
1033         }
1034         if (zd->monitor)
1035                 *mode = IW_MODE_MONITOR;
1036
1037         return 0;
1038 }
1039
1040 static int zd1201_get_range(struct net_device *dev,
1041     struct iw_request_info *info, struct iw_point *wrq, char *extra)
1042 {
1043         struct iw_range *range = (struct iw_range *)extra;
1044
1045         wrq->length = sizeof(struct iw_range);
1046         memset(range, 0, sizeof(struct iw_range));
1047         range->we_version_compiled = WIRELESS_EXT;
1048         range->we_version_source = WIRELESS_EXT;
1049
1050         range->max_qual.qual = 128;
1051         range->max_qual.level = 128;
1052         range->max_qual.noise = 128;
1053         range->max_qual.updated = 7;
1054
1055         range->encoding_size[0] = 5;
1056         range->encoding_size[1] = 13;
1057         range->num_encoding_sizes = 2;
1058         range->max_encoding_tokens = ZD1201_NUMKEYS;
1059
1060         range->num_bitrates = 4;
1061         range->bitrate[0] = 1000000;
1062         range->bitrate[1] = 2000000;
1063         range->bitrate[2] = 5500000;
1064         range->bitrate[3] = 11000000;
1065
1066         range->min_rts = 0;
1067         range->min_frag = ZD1201_FRAGMIN;
1068         range->max_rts = ZD1201_RTSMAX;
1069         range->min_frag = ZD1201_FRAGMAX;
1070
1071         return 0;
1072 }
1073
1074 /*      Little bit of magic here: we only get the quality if we poll
1075  *      for it, and we never get an actual request to trigger such
1076  *      a poll. Therefore we 'assume' that the user will soon ask for
1077  *      the stats after asking the bssid.
1078  */
1079 static int zd1201_get_wap(struct net_device *dev,
1080     struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1081 {
1082         struct zd1201 *zd = netdev_priv(dev);
1083         unsigned char buffer[6];
1084
1085         if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1086                 /* Unfortunately the quality and noise reported is useless.
1087                    they seem to be accumulators that increase until you
1088                    read them, unless we poll on a fixed interval we can't
1089                    use them
1090                  */
1091                 /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1092                 zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1093                 /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1094                 zd->iwstats.qual.updated = 2;
1095         }
1096
1097         return zd1201_getconfig(zd, ZD1201_RID_CURRENTBSSID, ap_addr->sa_data, 6);
1098 }
1099
1100 static int zd1201_set_scan(struct net_device *dev,
1101     struct iw_request_info *info, struct iw_point *srq, char *extra)
1102 {
1103         /* We do everything in get_scan */
1104         return 0;
1105 }
1106
1107 static int zd1201_get_scan(struct net_device *dev,
1108     struct iw_request_info *info, struct iw_point *srq, char *extra)
1109 {
1110         struct zd1201 *zd = netdev_priv(dev);
1111         int err, i, j, enabled_save;
1112         struct iw_event iwe;
1113         char *cev = extra;
1114         char *end_buf = extra + IW_SCAN_MAX_DATA;
1115
1116         /* No scanning in AP mode */
1117         if (zd->ap)
1118                 return -EOPNOTSUPP;
1119
1120         /* Scan doesn't seem to work if disabled */
1121         enabled_save = zd->mac_enabled;
1122         zd1201_enable(zd);
1123
1124         zd->rxdatas = 0;
1125         err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE,
1126              ZD1201_INQ_SCANRESULTS, 0, 0);
1127         if (err)
1128                 return err;
1129
1130         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1131         if (!zd->rxlen)
1132                 return -EIO;
1133
1134         if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1135                 return -EIO;
1136
1137         for(i=8; i<zd->rxlen; i+=62) {
1138                 iwe.cmd = SIOCGIWAP;
1139                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1140                 memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1141                 cev = iwe_stream_add_event(info, cev, end_buf,
1142                                            &iwe, IW_EV_ADDR_LEN);
1143
1144                 iwe.cmd = SIOCGIWESSID;
1145                 iwe.u.data.length = zd->rxdata[i+16];
1146                 iwe.u.data.flags = 1;
1147                 cev = iwe_stream_add_point(info, cev, end_buf,
1148                                            &iwe, zd->rxdata+i+18);
1149
1150                 iwe.cmd = SIOCGIWMODE;
1151                 if (zd->rxdata[i+14]&0x01)
1152                         iwe.u.mode = IW_MODE_MASTER;
1153                 else
1154                         iwe.u.mode = IW_MODE_ADHOC;
1155                 cev = iwe_stream_add_event(info, cev, end_buf,
1156                                            &iwe, IW_EV_UINT_LEN);
1157
1158                 iwe.cmd = SIOCGIWFREQ;
1159                 iwe.u.freq.m = zd->rxdata[i+0];
1160                 iwe.u.freq.e = 0;
1161                 cev = iwe_stream_add_event(info, cev, end_buf,
1162                                            &iwe, IW_EV_FREQ_LEN);
1163
1164                 iwe.cmd = SIOCGIWRATE;
1165                 iwe.u.bitrate.fixed = 0;
1166                 iwe.u.bitrate.disabled = 0;
1167                 for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
1168                         iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
1169                         cev = iwe_stream_add_event(info, cev, end_buf,
1170                                                    &iwe, IW_EV_PARAM_LEN);
1171                 }
1172
1173                 iwe.cmd = SIOCGIWENCODE;
1174                 iwe.u.data.length = 0;
1175                 if (zd->rxdata[i+14]&0x10)
1176                         iwe.u.data.flags = IW_ENCODE_ENABLED;
1177                 else
1178                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1179                 cev = iwe_stream_add_point(info, cev, end_buf, &iwe, NULL);
1180
1181                 iwe.cmd = IWEVQUAL;
1182                 iwe.u.qual.qual = zd->rxdata[i+4];
1183                 iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
1184                 iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
1185                 iwe.u.qual.updated = 7;
1186                 cev = iwe_stream_add_event(info, cev, end_buf,
1187                                            &iwe, IW_EV_QUAL_LEN);
1188         }
1189
1190         if (!enabled_save)
1191                 zd1201_disable(zd);
1192
1193         srq->length = cev - extra;
1194         srq->flags = 0;
1195
1196         return 0;
1197 }
1198
1199 static int zd1201_set_essid(struct net_device *dev,
1200     struct iw_request_info *info, struct iw_point *data, char *essid)
1201 {
1202         struct zd1201 *zd = netdev_priv(dev);
1203
1204         if (data->length > IW_ESSID_MAX_SIZE)
1205                 return -EINVAL;
1206         if (data->length < 1)
1207                 data->length = 1;
1208         zd->essidlen = data->length;
1209         memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1210         memcpy(zd->essid, essid, data->length);
1211         return zd1201_join(zd, zd->essid, zd->essidlen);
1212 }
1213
1214 static int zd1201_get_essid(struct net_device *dev,
1215     struct iw_request_info *info, struct iw_point *data, char *essid)
1216 {
1217         struct zd1201 *zd = netdev_priv(dev);
1218
1219         memcpy(essid, zd->essid, zd->essidlen);
1220         data->flags = 1;
1221         data->length = zd->essidlen;
1222
1223         return 0;
1224 }
1225
1226 static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1227     struct iw_point *data, char *nick)
1228 {
1229         strcpy(nick, "zd1201");
1230         data->flags = 1;
1231         data->length = strlen(nick);
1232         return 0;
1233 }
1234
1235 static int zd1201_set_rate(struct net_device *dev,
1236     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1237 {
1238         struct zd1201 *zd = netdev_priv(dev);
1239         short rate;
1240         int err;
1241
1242         switch (rrq->value) {
1243                 case 1000000:
1244                         rate = ZD1201_RATEB1;
1245                         break;
1246                 case 2000000:
1247                         rate = ZD1201_RATEB2;
1248                         break;
1249                 case 5500000:
1250                         rate = ZD1201_RATEB5;
1251                         break;
1252                 case 11000000:
1253                 default:
1254                         rate = ZD1201_RATEB11;
1255                         break;
1256         }
1257         if (!rrq->fixed) { /* Also enable all lower bitrates */
1258                 rate |= rate-1;
1259         }
1260
1261         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1262         if (err)
1263                 return err;
1264
1265         return zd1201_mac_reset(zd);
1266 }
1267
1268 static int zd1201_get_rate(struct net_device *dev,
1269     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1270 {
1271         struct zd1201 *zd = netdev_priv(dev);
1272         short rate;
1273         int err;
1274
1275         err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1276         if (err)
1277                 return err;
1278
1279         switch(rate) {
1280                 case 1:
1281                         rrq->value = 1000000;
1282                         break;
1283                 case 2:
1284                         rrq->value = 2000000;
1285                         break;
1286                 case 5:
1287                         rrq->value = 5500000;
1288                         break;
1289                 case 11:
1290                         rrq->value = 11000000;
1291                         break;
1292                 default:
1293                         rrq->value = 0;
1294         }
1295         rrq->fixed = 0;
1296         rrq->disabled = 0;
1297
1298         return 0;
1299 }
1300
1301 static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1302     struct iw_param *rts, char *extra)
1303 {
1304         struct zd1201 *zd = netdev_priv(dev);
1305         int err;
1306         short val = rts->value;
1307
1308         if (rts->disabled || !rts->fixed)
1309                 val = ZD1201_RTSMAX;
1310         if (val > ZD1201_RTSMAX)
1311                 return -EINVAL;
1312         if (val < 0)
1313                 return -EINVAL;
1314
1315         err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1316         if (err)
1317                 return err;
1318         return zd1201_mac_reset(zd);
1319 }
1320
1321 static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1322     struct iw_param *rts, char *extra)
1323 {
1324         struct zd1201 *zd = netdev_priv(dev);
1325         short rtst;
1326         int err;
1327
1328         err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1329         if (err)
1330                 return err;
1331         rts->value = rtst;
1332         rts->disabled = (rts->value == ZD1201_RTSMAX);
1333         rts->fixed = 1;
1334
1335         return 0;
1336 }
1337
1338 static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1339     struct iw_param *frag, char *extra)
1340 {
1341         struct zd1201 *zd = netdev_priv(dev);
1342         int err;
1343         short val = frag->value;
1344
1345         if (frag->disabled || !frag->fixed)
1346                 val = ZD1201_FRAGMAX;
1347         if (val > ZD1201_FRAGMAX)
1348                 return -EINVAL;
1349         if (val < ZD1201_FRAGMIN)
1350                 return -EINVAL;
1351         if (val & 1)
1352                 return -EINVAL;
1353         err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1354         if (err)
1355                 return err;
1356         return zd1201_mac_reset(zd);
1357 }
1358
1359 static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1360     struct iw_param *frag, char *extra)
1361 {
1362         struct zd1201 *zd = netdev_priv(dev);
1363         short fragt;
1364         int err;
1365
1366         err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1367         if (err)
1368                 return err;
1369         frag->value = fragt;
1370         frag->disabled = (frag->value == ZD1201_FRAGMAX);
1371         frag->fixed = 1;
1372
1373         return 0;
1374 }
1375
1376 static int zd1201_set_retry(struct net_device *dev,
1377     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1378 {
1379         return 0;
1380 }
1381
1382 static int zd1201_get_retry(struct net_device *dev,
1383     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1384 {
1385         return 0;
1386 }
1387
1388 static int zd1201_set_encode(struct net_device *dev,
1389     struct iw_request_info *info, struct iw_point *erq, char *key)
1390 {
1391         struct zd1201 *zd = netdev_priv(dev);
1392         short i;
1393         int err, rid;
1394
1395         if (erq->length > ZD1201_MAXKEYLEN)
1396                 return -EINVAL;
1397
1398         i = (erq->flags & IW_ENCODE_INDEX)-1;
1399         if (i == -1) {
1400                 err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1401                 if (err)
1402                         return err;
1403         } else {
1404                 err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1405                 if (err)
1406                         return err;
1407         }
1408
1409         if (i < 0 || i >= ZD1201_NUMKEYS)
1410                 return -EINVAL;
1411
1412         rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1413         err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1414         if (err)
1415                 return err;
1416         zd->encode_keylen[i] = erq->length;
1417         memcpy(zd->encode_keys[i], key, erq->length);
1418
1419         i=0;
1420         if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1421                 i |= 0x01;
1422                 zd->encode_enabled = 1;
1423         } else
1424                 zd->encode_enabled = 0;
1425         if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1426                 i |= 0x02;
1427                 zd->encode_restricted = 1;
1428         } else
1429                 zd->encode_restricted = 0;
1430         err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1431         if (err)
1432                 return err;
1433
1434         if (zd->encode_enabled)
1435                 i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1436         else
1437                 i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1438         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1439         if (err)
1440                 return err;
1441
1442         return zd1201_mac_reset(zd);
1443 }
1444
1445 static int zd1201_get_encode(struct net_device *dev,
1446     struct iw_request_info *info, struct iw_point *erq, char *key)
1447 {
1448         struct zd1201 *zd = netdev_priv(dev);
1449         short i;
1450         int err;
1451
1452         if (zd->encode_enabled)
1453                 erq->flags = IW_ENCODE_ENABLED;
1454         else
1455                 erq->flags = IW_ENCODE_DISABLED;
1456         if (zd->encode_restricted)
1457                 erq->flags |= IW_ENCODE_RESTRICTED;
1458         else
1459                 erq->flags |= IW_ENCODE_OPEN;
1460
1461         i = (erq->flags & IW_ENCODE_INDEX) -1;
1462         if (i == -1) {
1463                 err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1464                 if (err)
1465                         return err;
1466         }
1467         if (i<0 || i>= ZD1201_NUMKEYS)
1468                 return -EINVAL;
1469
1470         erq->flags |= i+1;
1471
1472         erq->length = zd->encode_keylen[i];
1473         memcpy(key, zd->encode_keys[i], erq->length);
1474
1475         return 0;
1476 }
1477
1478 static int zd1201_set_power(struct net_device *dev,
1479     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1480 {
1481         struct zd1201 *zd = netdev_priv(dev);
1482         short enabled, duration, level;
1483         int err;
1484
1485         enabled = vwrq->disabled ? 0 : 1;
1486         if (enabled) {
1487                 if (vwrq->flags & IW_POWER_PERIOD) {
1488                         duration = vwrq->value;
1489                         err = zd1201_setconfig16(zd,
1490                             ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1491                         if (err)
1492                                 return err;
1493                         goto out;
1494                 }
1495                 if (vwrq->flags & IW_POWER_TIMEOUT) {
1496                         err = zd1201_getconfig16(zd,
1497                             ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1498                         if (err)
1499                                 return err;
1500                         level = vwrq->value * 4 / duration;
1501                         if (level > 4)
1502                                 level = 4;
1503                         if (level < 0)
1504                                 level = 0;
1505                         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1506                             level);
1507                         if (err)
1508                                 return err;
1509                         goto out;
1510                 }
1511                 return -EINVAL;
1512         }
1513 out:
1514         return zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1515 }
1516
1517 static int zd1201_get_power(struct net_device *dev,
1518     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1519 {
1520         struct zd1201 *zd = netdev_priv(dev);
1521         short enabled, level, duration;
1522         int err;
1523
1524         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1525         if (err)
1526                 return err;
1527         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1528         if (err)
1529                 return err;
1530         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1531         if (err)
1532                 return err;
1533         vwrq->disabled = enabled ? 0 : 1;
1534         if (vwrq->flags & IW_POWER_TYPE) {
1535                 if (vwrq->flags & IW_POWER_PERIOD) {
1536                         vwrq->value = duration;
1537                         vwrq->flags = IW_POWER_PERIOD;
1538                 } else {
1539                         vwrq->value = duration * level / 4;
1540                         vwrq->flags = IW_POWER_TIMEOUT;
1541                 }
1542         }
1543         if (vwrq->flags & IW_POWER_MODE) {
1544                 if (enabled && level)
1545                         vwrq->flags = IW_POWER_UNICAST_R;
1546                 else
1547                         vwrq->flags = IW_POWER_ALL_R;
1548         }
1549
1550         return 0;
1551 }
1552
1553
1554 static const iw_handler zd1201_iw_handler[] =
1555 {
1556         (iw_handler) zd1201_config_commit,      /* SIOCSIWCOMMIT */
1557         (iw_handler) zd1201_get_name,           /* SIOCGIWNAME */
1558         (iw_handler) NULL,                      /* SIOCSIWNWID */
1559         (iw_handler) NULL,                      /* SIOCGIWNWID */
1560         (iw_handler) zd1201_set_freq,           /* SIOCSIWFREQ */
1561         (iw_handler) zd1201_get_freq,           /* SIOCGIWFREQ */
1562         (iw_handler) zd1201_set_mode,           /* SIOCSIWMODE */
1563         (iw_handler) zd1201_get_mode,           /* SIOCGIWMODE */
1564         (iw_handler) NULL,                      /* SIOCSIWSENS */
1565         (iw_handler) NULL,                      /* SIOCGIWSENS */
1566         (iw_handler) NULL,                      /* SIOCSIWRANGE */
1567         (iw_handler) zd1201_get_range,           /* SIOCGIWRANGE */
1568         (iw_handler) NULL,                      /* SIOCSIWPRIV */
1569         (iw_handler) NULL,                      /* SIOCGIWPRIV */
1570         (iw_handler) NULL,                      /* SIOCSIWSTATS */
1571         (iw_handler) NULL,                      /* SIOCGIWSTATS */
1572         (iw_handler) NULL,                      /* SIOCSIWSPY */
1573         (iw_handler) NULL,                      /* SIOCGIWSPY */
1574         (iw_handler) NULL,                      /* -- hole -- */
1575         (iw_handler) NULL,                      /* -- hole -- */
1576         (iw_handler) NULL/*zd1201_set_wap*/,            /* SIOCSIWAP */
1577         (iw_handler) zd1201_get_wap,            /* SIOCGIWAP */
1578         (iw_handler) NULL,                      /* -- hole -- */
1579         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
1580         (iw_handler) zd1201_set_scan,           /* SIOCSIWSCAN */
1581         (iw_handler) zd1201_get_scan,           /* SIOCGIWSCAN */
1582         (iw_handler) zd1201_set_essid,          /* SIOCSIWESSID */
1583         (iw_handler) zd1201_get_essid,          /* SIOCGIWESSID */
1584         (iw_handler) NULL,                      /* SIOCSIWNICKN */
1585         (iw_handler) zd1201_get_nick,           /* SIOCGIWNICKN */
1586         (iw_handler) NULL,                      /* -- hole -- */
1587         (iw_handler) NULL,                      /* -- hole -- */
1588         (iw_handler) zd1201_set_rate,           /* SIOCSIWRATE */
1589         (iw_handler) zd1201_get_rate,           /* SIOCGIWRATE */
1590         (iw_handler) zd1201_set_rts,            /* SIOCSIWRTS */
1591         (iw_handler) zd1201_get_rts,            /* SIOCGIWRTS */
1592         (iw_handler) zd1201_set_frag,           /* SIOCSIWFRAG */
1593         (iw_handler) zd1201_get_frag,           /* SIOCGIWFRAG */
1594         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
1595         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
1596         (iw_handler) zd1201_set_retry,          /* SIOCSIWRETRY */
1597         (iw_handler) zd1201_get_retry,          /* SIOCGIWRETRY */
1598         (iw_handler) zd1201_set_encode,         /* SIOCSIWENCODE */
1599         (iw_handler) zd1201_get_encode,         /* SIOCGIWENCODE */
1600         (iw_handler) zd1201_set_power,          /* SIOCSIWPOWER */
1601         (iw_handler) zd1201_get_power,          /* SIOCGIWPOWER */
1602 };
1603
1604 static int zd1201_set_hostauth(struct net_device *dev,
1605     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1606 {
1607         struct zd1201 *zd = netdev_priv(dev);
1608
1609         if (!zd->ap)
1610                 return -EOPNOTSUPP;
1611
1612         return zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1613 }
1614
1615 static int zd1201_get_hostauth(struct net_device *dev,
1616     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1617 {
1618         struct zd1201 *zd = netdev_priv(dev);
1619         short hostauth;
1620         int err;
1621
1622         if (!zd->ap)
1623                 return -EOPNOTSUPP;
1624
1625         err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1626         if (err)
1627                 return err;
1628         rrq->value = hostauth;
1629         rrq->fixed = 1;
1630
1631         return 0;
1632 }
1633
1634 static int zd1201_auth_sta(struct net_device *dev,
1635     struct iw_request_info *info, struct sockaddr *sta, char *extra)
1636 {
1637         struct zd1201 *zd = netdev_priv(dev);
1638         unsigned char buffer[10];
1639
1640         if (!zd->ap)
1641                 return -EOPNOTSUPP;
1642
1643         memcpy(buffer, sta->sa_data, ETH_ALEN);
1644         *(short*)(buffer+6) = 0;        /* 0==success, 1==failure */
1645         *(short*)(buffer+8) = 0;
1646
1647         return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1648 }
1649
1650 static int zd1201_set_maxassoc(struct net_device *dev,
1651     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1652 {
1653         struct zd1201 *zd = netdev_priv(dev);
1654
1655         if (!zd->ap)
1656                 return -EOPNOTSUPP;
1657
1658         return zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1659 }
1660
1661 static int zd1201_get_maxassoc(struct net_device *dev,
1662     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1663 {
1664         struct zd1201 *zd = netdev_priv(dev);
1665         short maxassoc;
1666         int err;
1667
1668         if (!zd->ap)
1669                 return -EOPNOTSUPP;
1670
1671         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1672         if (err)
1673                 return err;
1674         rrq->value = maxassoc;
1675         rrq->fixed = 1;
1676
1677         return 0;
1678 }
1679
1680 static const iw_handler zd1201_private_handler[] = {
1681         (iw_handler) zd1201_set_hostauth,       /* ZD1201SIWHOSTAUTH */
1682         (iw_handler) zd1201_get_hostauth,       /* ZD1201GIWHOSTAUTH */
1683         (iw_handler) zd1201_auth_sta,           /* ZD1201SIWAUTHSTA */
1684         (iw_handler) NULL,                      /* nothing to get */
1685         (iw_handler) zd1201_set_maxassoc,       /* ZD1201SIMAXASSOC */
1686         (iw_handler) zd1201_get_maxassoc,       /* ZD1201GIMAXASSOC */
1687 };
1688
1689 static const struct iw_priv_args zd1201_private_args[] = {
1690         { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1691             IW_PRIV_TYPE_NONE, "sethostauth" },
1692         { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1693             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1694         { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1695             IW_PRIV_TYPE_NONE, "authstation" },
1696         { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1697             IW_PRIV_TYPE_NONE, "setmaxassoc" },
1698         { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1699             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1700 };
1701
1702 static const struct iw_handler_def zd1201_iw_handlers = {
1703         .num_standard           = ARRAY_SIZE(zd1201_iw_handler),
1704         .num_private            = ARRAY_SIZE(zd1201_private_handler),
1705         .num_private_args       = ARRAY_SIZE(zd1201_private_args),
1706         .standard               = (iw_handler *)zd1201_iw_handler,
1707         .private                = (iw_handler *)zd1201_private_handler,
1708         .private_args           = (struct iw_priv_args *) zd1201_private_args,
1709         .get_wireless_stats     = zd1201_get_wireless_stats,
1710 };
1711
1712 static const struct net_device_ops zd1201_netdev_ops = {
1713         .ndo_open               = zd1201_net_open,
1714         .ndo_stop               = zd1201_net_stop,
1715         .ndo_start_xmit         = zd1201_hard_start_xmit,
1716         .ndo_tx_timeout         = zd1201_tx_timeout,
1717         .ndo_set_rx_mode        = zd1201_set_multicast,
1718         .ndo_set_mac_address    = zd1201_set_mac_address,
1719         .ndo_validate_addr      = eth_validate_addr,
1720 };
1721
1722 static int zd1201_probe(struct usb_interface *interface,
1723                         const struct usb_device_id *id)
1724 {
1725         struct zd1201 *zd;
1726         struct net_device *dev;
1727         struct usb_device *usb;
1728         int err;
1729         short porttype;
1730         char buf[IW_ESSID_MAX_SIZE+2];
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,
1782             dev->dev_addr, dev->addr_len);
1783         if (err)
1784                 goto err_start;
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);