Version:  2.0.40 2.2.26 2.4.37 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18

Linux/drivers/net/wireless/zd1201.c

  1 /*
  2  *      Driver for ZyDAS zd1201 based wireless USB devices.
  3  *
  4  *      Copyright (c) 2004, 2005 Jeroen Vreeken (pe1rxq@amsat.org)
  5  *
  6  *      This program is free software; you can redistribute it and/or
  7  *      modify it under the terms of the GNU General Public License
  8  *      version 2 as published by the Free Software Foundation.
  9  *
 10  *      Parts of this driver have been derived from a wlan-ng version
 11  *      modified by ZyDAS. They also made documentation available, thanks!
 12  *      Copyright (C) 1999 AbsoluteValue Systems, Inc.  All Rights Reserved.
 13  */
 14 
 15 #include <linux/module.h>
 16 #include <linux/usb.h>
 17 #include <linux/slab.h>
 18 #include <linux/netdevice.h>
 19 #include <linux/etherdevice.h>
 20 #include <linux/wireless.h>
 21 #include <net/cfg80211.h>
 22 #include <net/iw_handler.h>
 23 #include <linux/string.h>
 24 #include <linux/if_arp.h>
 25 #include <linux/firmware.h>
 26 #include "zd1201.h"
 27 
 28 static struct usb_device_id zd1201_table[] = {
 29         {USB_DEVICE(0x0586, 0x3400)}, /* Peabird Wireless USB Adapter */
 30         {USB_DEVICE(0x0ace, 0x1201)}, /* ZyDAS ZD1201 Wireless USB Adapter */
 31         {USB_DEVICE(0x050d, 0x6051)}, /* Belkin F5D6051 usb  adapter */
 32         {USB_DEVICE(0x0db0, 0x6823)}, /* MSI UB11B usb  adapter */
 33         {USB_DEVICE(0x1044, 0x8004)}, /* Gigabyte GN-WLBZ101 */
 34         {USB_DEVICE(0x1044, 0x8005)}, /* GIGABYTE GN-WLBZ201 usb adapter */
 35         {}
 36 };
 37 
 38 static int ap;  /* Are we an AP or a normal station? */
 39 
 40 #define ZD1201_VERSION  "0.15"
 41 
 42 MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>");
 43 MODULE_DESCRIPTION("Driver for ZyDAS ZD1201 based USB Wireless adapters");
 44 MODULE_VERSION(ZD1201_VERSION);
 45 MODULE_LICENSE("GPL");
 46 module_param(ap, int, 0);
 47 MODULE_PARM_DESC(ap, "If non-zero Access Point firmware will be loaded");
 48 MODULE_DEVICE_TABLE(usb, zd1201_table);
 49 
 50 
 51 static int zd1201_fw_upload(struct usb_device *dev, int apfw)
 52 {
 53         const struct firmware *fw_entry;
 54         const char *data;
 55         unsigned long len;
 56         int err;
 57         unsigned char ret;
 58         char *buf;
 59         char *fwfile;
 60 
 61         if (apfw)
 62                 fwfile = "zd1201-ap.fw";
 63         else
 64                 fwfile = "zd1201.fw";
 65 
 66         err = request_firmware(&fw_entry, fwfile, &dev->dev);
 67         if (err) {
 68                 dev_err(&dev->dev, "Failed to load %s firmware file!\n", fwfile);
 69                 dev_err(&dev->dev, "Make sure the hotplug firmware loader is installed.\n");
 70                 dev_err(&dev->dev, "Goto http://linux-lc100020.sourceforge.net for more info.\n");
 71                 return err;
 72         }
 73 
 74         data = fw_entry->data;
 75         len = fw_entry->size;
 76 
 77         buf = kmalloc(1024, GFP_ATOMIC);
 78         if (!buf) {
 79                 err = -ENOMEM;
 80                 goto exit;
 81         }
 82         
 83         while (len > 0) {
 84                 int translen = (len > 1024) ? 1024 : len;
 85                 memcpy(buf, data, translen);
 86 
 87                 err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0,
 88                     USB_DIR_OUT | 0x40, 0, 0, buf, translen,
 89                     ZD1201_FW_TIMEOUT);
 90                 if (err < 0)
 91                         goto exit;
 92 
 93                 len -= translen;
 94                 data += translen;
 95         }
 96                                         
 97         err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0x2,
 98             USB_DIR_OUT | 0x40, 0, 0, NULL, 0, ZD1201_FW_TIMEOUT);
 99         if (err < 0)
100                 goto exit;
101 
102         err = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 0x4,
103             USB_DIR_IN | 0x40, 0, 0, buf, sizeof(ret), ZD1201_FW_TIMEOUT);
104         if (err < 0)
105                 goto exit;
106 
107         memcpy(&ret, buf, sizeof(ret));
108 
109         if (ret & 0x80) {
110                 err = -EIO;
111                 goto exit;
112         }
113 
114         err = 0;
115 exit:
116         kfree(buf);
117         release_firmware(fw_entry);
118         return err;
119 }
120 
121 MODULE_FIRMWARE("zd1201-ap.fw");
122 MODULE_FIRMWARE("zd1201.fw");
123 
124 static void zd1201_usbfree(struct urb *urb)
125 {
126         struct zd1201 *zd = urb->context;
127 
128         switch(urb->status) {
129                 case -EILSEQ:
130                 case -ENODEV:
131                 case -ETIME:
132                 case -ENOENT:
133                 case -EPIPE:
134                 case -EOVERFLOW:
135                 case -ESHUTDOWN:
136                         dev_warn(&zd->usb->dev, "%s: urb failed: %d\n", 
137                             zd->dev->name, urb->status);
138         }
139 
140         kfree(urb->transfer_buffer);
141         usb_free_urb(urb);
142 }
143 
144 /* cmdreq message: 
145         u32 type
146         u16 cmd
147         u16 parm0
148         u16 parm1
149         u16 parm2
150         u8  pad[4]
151 
152         total: 4 + 2 + 2 + 2 + 2 + 4 = 16
153 */
154 static int zd1201_docmd(struct zd1201 *zd, int cmd, int parm0,
155                         int parm1, int parm2)
156 {
157         unsigned char *command;
158         int ret;
159         struct urb *urb;
160 
161         command = kmalloc(16, GFP_ATOMIC);
162         if (!command)
163                 return -ENOMEM;
164 
165         *((__le32*)command) = cpu_to_le32(ZD1201_USB_CMDREQ);
166         *((__le16*)&command[4]) = cpu_to_le16(cmd);
167         *((__le16*)&command[6]) = cpu_to_le16(parm0);
168         *((__le16*)&command[8]) = cpu_to_le16(parm1);
169         *((__le16*)&command[10])= cpu_to_le16(parm2);
170 
171         urb = usb_alloc_urb(0, GFP_ATOMIC);
172         if (!urb) {
173                 kfree(command);
174                 return -ENOMEM;
175         }
176         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
177                           command, 16, zd1201_usbfree, zd);
178         ret = usb_submit_urb(urb, GFP_ATOMIC);
179         if (ret) {
180                 kfree(command);
181                 usb_free_urb(urb);
182         }
183 
184         return ret;
185 }
186 
187 /* Callback after sending out a packet */
188 static void zd1201_usbtx(struct urb *urb)
189 {
190         struct zd1201 *zd = urb->context;
191         netif_wake_queue(zd->dev);
192 }
193 
194 /* Incoming data */
195 static void zd1201_usbrx(struct urb *urb)
196 {
197         struct zd1201 *zd = urb->context;
198         int free = 0;
199         unsigned char *data = urb->transfer_buffer;
200         struct sk_buff *skb;
201         unsigned char type;
202 
203         if (!zd)
204                 return;
205 
206         switch(urb->status) {
207                 case -EILSEQ:
208                 case -ENODEV:
209                 case -ETIME:
210                 case -ENOENT:
211                 case -EPIPE:
212                 case -EOVERFLOW:
213                 case -ESHUTDOWN:
214                         dev_warn(&zd->usb->dev, "%s: rx urb failed: %d\n",
215                             zd->dev->name, urb->status);
216                         free = 1;
217                         goto exit;
218         }
219         
220         if (urb->status != 0 || urb->actual_length == 0)
221                 goto resubmit;
222 
223         type = data[0];
224         if (type == ZD1201_PACKET_EVENTSTAT || type == ZD1201_PACKET_RESOURCE) {
225                 memcpy(zd->rxdata, data, urb->actual_length);
226                 zd->rxlen = urb->actual_length;
227                 zd->rxdatas = 1;
228                 wake_up(&zd->rxdataq);
229         }
230         /* Info frame */
231         if (type == ZD1201_PACKET_INQUIRE) {
232                 int i = 0;
233                 unsigned short infotype, framelen, copylen;
234                 framelen = le16_to_cpu(*(__le16*)&data[4]);
235                 infotype = le16_to_cpu(*(__le16*)&data[6]);
236 
237                 if (infotype == ZD1201_INF_LINKSTATUS) {
238                         short linkstatus;
239 
240                         linkstatus = le16_to_cpu(*(__le16*)&data[8]);
241                         switch(linkstatus) {
242                                 case 1:
243                                         netif_carrier_on(zd->dev);
244                                         break;
245                                 case 2:
246                                         netif_carrier_off(zd->dev);
247                                         break;
248                                 case 3:
249                                         netif_carrier_off(zd->dev);
250                                         break;
251                                 case 4:
252                                         netif_carrier_on(zd->dev);
253                                         break;
254                                 default:
255                                         netif_carrier_off(zd->dev);
256                         }
257                         goto resubmit;
258                 }
259                 if (infotype == ZD1201_INF_ASSOCSTATUS) {
260                         short status = le16_to_cpu(*(__le16*)(data+8));
261                         int event;
262                         union iwreq_data wrqu;
263 
264                         switch (status) {
265                                 case ZD1201_ASSOCSTATUS_STAASSOC:
266                                 case ZD1201_ASSOCSTATUS_REASSOC:
267                                         event = IWEVREGISTERED;
268                                         break;
269                                 case ZD1201_ASSOCSTATUS_DISASSOC:
270                                 case ZD1201_ASSOCSTATUS_ASSOCFAIL:
271                                 case ZD1201_ASSOCSTATUS_AUTHFAIL:
272                                 default:
273                                         event = IWEVEXPIRED;
274                         }
275                         memcpy(wrqu.addr.sa_data, data+10, ETH_ALEN);
276                         wrqu.addr.sa_family = ARPHRD_ETHER;
277 
278                         /* Send event to user space */
279                         wireless_send_event(zd->dev, event, &wrqu, NULL);
280 
281                         goto resubmit;
282                 }
283                 if (infotype == ZD1201_INF_AUTHREQ) {
284                         union iwreq_data wrqu;
285 
286                         memcpy(wrqu.addr.sa_data, data+8, ETH_ALEN);
287                         wrqu.addr.sa_family = ARPHRD_ETHER;
288                         /* There isn't a event that trully fits this request.
289                            We assume that userspace will be smart enough to
290                            see a new station being expired and sends back a
291                            authstation ioctl to authorize it. */
292                         wireless_send_event(zd->dev, IWEVEXPIRED, &wrqu, NULL);
293                         goto resubmit;
294                 }
295                 /* Other infotypes are handled outside this handler */
296                 zd->rxlen = 0;
297                 while (i < urb->actual_length) {
298                         copylen = le16_to_cpu(*(__le16*)&data[i+2]);
299                         /* Sanity check, sometimes we get junk */
300                         if (copylen+zd->rxlen > sizeof(zd->rxdata))
301                                 break;
302                         memcpy(zd->rxdata+zd->rxlen, data+i+4, copylen);
303                         zd->rxlen += copylen;
304                         i += 64;
305                 }
306                 if (i >= urb->actual_length) {
307                         zd->rxdatas = 1;
308                         wake_up(&zd->rxdataq);
309                 }
310                 goto  resubmit;
311         }
312         /* Actual data */
313         if (data[urb->actual_length-1] == ZD1201_PACKET_RXDATA) {
314                 int datalen = urb->actual_length-1;
315                 unsigned short len, fc, seq;
316 
317                 len = ntohs(*(__be16 *)&data[datalen-2]);
318                 if (len>datalen)
319                         len=datalen;
320                 fc = le16_to_cpu(*(__le16 *)&data[datalen-16]);
321                 seq = le16_to_cpu(*(__le16 *)&data[datalen-24]);
322 
323                 if (zd->monitor) {
324                         if (datalen < 24)
325                                 goto resubmit;
326                         if (!(skb = dev_alloc_skb(datalen+24)))
327                                 goto resubmit;
328                         
329                         memcpy(skb_put(skb, 2), &data[datalen-16], 2);
330                         memcpy(skb_put(skb, 2), &data[datalen-2], 2);
331                         memcpy(skb_put(skb, 6), &data[datalen-14], 6);
332                         memcpy(skb_put(skb, 6), &data[datalen-22], 6);
333                         memcpy(skb_put(skb, 6), &data[datalen-8], 6);
334                         memcpy(skb_put(skb, 2), &data[datalen-24], 2);
335                         memcpy(skb_put(skb, len), data, len);
336                         skb->protocol = eth_type_trans(skb, zd->dev);
337                         zd->dev->stats.rx_packets++;
338                         zd->dev->stats.rx_bytes += skb->len;
339                         netif_rx(skb);
340                         goto resubmit;
341                 }
342                         
343                 if ((seq & IEEE80211_SCTL_FRAG) ||
344                     (fc & IEEE80211_FCTL_MOREFRAGS)) {
345                         struct zd1201_frag *frag = NULL;
346                         char *ptr;
347 
348                         if (datalen<14)
349                                 goto resubmit;
350                         if ((seq & IEEE80211_SCTL_FRAG) == 0) {
351                                 frag = kmalloc(sizeof(*frag), GFP_ATOMIC);
352                                 if (!frag)
353                                         goto resubmit;
354                                 skb = dev_alloc_skb(IEEE80211_MAX_DATA_LEN +14+2);
355                                 if (!skb) {
356                                         kfree(frag);
357                                         goto resubmit;
358                                 }
359                                 frag->skb = skb;
360                                 frag->seq = seq & IEEE80211_SCTL_SEQ;
361                                 skb_reserve(skb, 2);
362                                 memcpy(skb_put(skb, 12), &data[datalen-14], 12);
363                                 memcpy(skb_put(skb, 2), &data[6], 2);
364                                 memcpy(skb_put(skb, len), data+8, len);
365                                 hlist_add_head(&frag->fnode, &zd->fraglist);
366                                 goto resubmit;
367                         }
368                         hlist_for_each_entry(frag, &zd->fraglist, fnode)
369                                 if (frag->seq == (seq&IEEE80211_SCTL_SEQ))
370                                         break;
371                         if (!frag)
372                                 goto resubmit;
373                         skb = frag->skb;
374                         ptr = skb_put(skb, len);
375                         if (ptr)
376                                 memcpy(ptr, data+8, len);
377                         if (fc & IEEE80211_FCTL_MOREFRAGS)
378                                 goto resubmit;
379                         hlist_del_init(&frag->fnode);
380                         kfree(frag);
381                 } else {
382                         if (datalen<14)
383                                 goto resubmit;
384                         skb = dev_alloc_skb(len + 14 + 2);
385                         if (!skb)
386                                 goto resubmit;
387                         skb_reserve(skb, 2);
388                         memcpy(skb_put(skb, 12), &data[datalen-14], 12);
389                         memcpy(skb_put(skb, 2), &data[6], 2);
390                         memcpy(skb_put(skb, len), data+8, len);
391                 }
392                 skb->protocol = eth_type_trans(skb, zd->dev);
393                 zd->dev->stats.rx_packets++;
394                 zd->dev->stats.rx_bytes += skb->len;
395                 netif_rx(skb);
396         }
397 resubmit:
398         memset(data, 0, ZD1201_RXSIZE);
399 
400         urb->status = 0;
401         urb->dev = zd->usb;
402         if(usb_submit_urb(urb, GFP_ATOMIC))
403                 free = 1;
404 
405 exit:
406         if (free) {
407                 zd->rxlen = 0;
408                 zd->rxdatas = 1;
409                 wake_up(&zd->rxdataq);
410                 kfree(urb->transfer_buffer);
411         }
412 }
413 
414 static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
415         unsigned int riddatalen)
416 {
417         int err;
418         int i = 0;
419         int code;
420         int rid_fid;
421         int length;
422         unsigned char *pdata;
423 
424         zd->rxdatas = 0;
425         err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
426         if (err)
427                 return err;
428 
429         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
430         if (!zd->rxlen)
431                 return -EIO;
432 
433         code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
434         rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
435         length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
436         if (length > zd->rxlen)
437                 length = zd->rxlen-6;
438 
439         /* If access bit is not on, then error */
440         if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
441                 return -EINVAL;
442 
443         /* Not enough buffer for allocating data */
444         if (riddatalen != (length - 4)) {
445                 dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
446                     riddatalen, zd->rxlen, length, rid, rid_fid);
447                 return -ENODATA;
448         }
449 
450         zd->rxdatas = 0;
451         /* Issue SetRxRid commnd */                     
452         err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
453         if (err)
454                 return err;
455 
456         /* Receive RID record from resource packets */
457         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
458         if (!zd->rxlen)
459                 return -EIO;
460 
461         if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
462                 dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
463                     zd->rxdata[zd->rxlen-1]);
464                 return -EINVAL;
465         }
466 
467         /* Set the data pointer and received data length */
468         pdata = zd->rxdata;
469         length = zd->rxlen;
470 
471         do {
472                 int actual_length;
473 
474                 actual_length = (length > 64) ? 64 : length;
475 
476                 if (pdata[0] != 0x3) {
477                         dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
478                             pdata[0]);
479                         return -EINVAL;
480                 }
481 
482                 if (actual_length != 64) {
483                         /* Trim the last packet type byte */
484                         actual_length--;
485                 }
486 
487                 /* Skip the 4 bytes header (RID length and RID) */
488                 if (i == 0) {
489                         pdata += 8;
490                         actual_length -= 8;
491                 } else {
492                         pdata += 4;
493                         actual_length -= 4;
494                 }
495                 
496                 memcpy(riddata, pdata, actual_length);
497                 riddata += actual_length;
498                 pdata += actual_length;
499                 length -= 64;
500                 i++;
501         } while (length > 0);
502 
503         return 0;
504 }
505 
506 /*
507  *      resreq:
508  *              byte    type
509  *              byte    sequence
510  *              u16     reserved
511  *              byte    data[12]
512  *      total: 16
513  */
514 static int zd1201_setconfig(struct zd1201 *zd, int rid, void *buf, int len, int wait)
515 {
516         int err;
517         unsigned char *request;
518         int reqlen;
519         char seq=0;
520         struct urb *urb;
521         gfp_t gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
522 
523         len += 4;                       /* first 4 are for header */
524 
525         zd->rxdatas = 0;
526         zd->rxlen = 0;
527         for (seq=0; len > 0; seq++) {
528                 request = kmalloc(16, gfp_mask);
529                 if (!request)
530                         return -ENOMEM;
531                 urb = usb_alloc_urb(0, gfp_mask);
532                 if (!urb) {
533                         kfree(request);
534                         return -ENOMEM;
535                 }
536                 memset(request, 0, 16);
537                 reqlen = len>12 ? 12 : len;
538                 request[0] = ZD1201_USB_RESREQ;
539                 request[1] = seq;
540                 request[2] = 0;
541                 request[3] = 0;
542                 if (request[1] == 0) {
543                         /* add header */
544                         *(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
545                         *(__le16*)&request[6] = cpu_to_le16(rid);
546                         memcpy(request+8, buf, reqlen-4);
547                         buf += reqlen-4;
548                 } else {
549                         memcpy(request+4, buf, reqlen);
550                         buf += reqlen;
551                 }
552 
553                 len -= reqlen;
554 
555                 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
556                     zd->endp_out2), request, 16, zd1201_usbfree, zd);
557                 err = usb_submit_urb(urb, gfp_mask);
558                 if (err)
559                         goto err;
560         }
561 
562         request = kmalloc(16, gfp_mask);
563         if (!request)
564                 return -ENOMEM;
565         urb = usb_alloc_urb(0, gfp_mask);
566         if (!urb) {
567                 kfree(request);
568                 return -ENOMEM;
569         }
570         *((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
571         *((__le16*)&request[4]) = 
572             cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
573         *((__le16*)&request[6]) = cpu_to_le16(rid);
574         *((__le16*)&request[8]) = cpu_to_le16(0);
575         *((__le16*)&request[10]) = cpu_to_le16(0);
576         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
577              request, 16, zd1201_usbfree, zd);
578         err = usb_submit_urb(urb, gfp_mask);
579         if (err)
580                 goto err;
581         
582         if (wait) {
583                 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
584                 if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
585                         dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
586                 }
587         }
588 
589         return 0;
590 err:
591         kfree(request);
592         usb_free_urb(urb);
593         return err;
594 }
595 
596 static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
597 {
598         int err;
599         __le16 zdval;
600 
601         err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
602         if (err)
603                 return err;
604         *val = le16_to_cpu(zdval);
605         return 0;
606 }
607 
608 static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
609 {
610         __le16 zdval = cpu_to_le16(val);
611         return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
612 }
613 
614 static int zd1201_drvr_start(struct zd1201 *zd)
615 {
616         int err, i;
617         short max;
618         __le16 zdmax;
619         unsigned char *buffer;
620 
621         buffer = kzalloc(ZD1201_RXSIZE, GFP_KERNEL);
622         if (!buffer)
623                 return -ENOMEM;
624 
625         usb_fill_bulk_urb(zd->rx_urb, zd->usb, 
626             usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
627             zd1201_usbrx, zd);
628 
629         err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
630         if (err)
631                 goto err_buffer;
632 
633         err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
634         if (err)
635                 goto err_urb;
636 
637         err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
638             sizeof(__le16));
639         if (err)
640                 goto err_urb;
641 
642         max = le16_to_cpu(zdmax);
643         for (i=0; i<max; i++) {
644                 err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
645                 if (err)
646                         goto err_urb;
647         }
648 
649         return 0;
650 
651 err_urb:
652         usb_kill_urb(zd->rx_urb);
653         return err;
654 err_buffer:
655         kfree(buffer);
656         return err;
657 }
658 
659 /*      Magic alert: The firmware doesn't seem to like the MAC state being
660  *      toggled in promisc (aka monitor) mode.
661  *      (It works a number of times, but will halt eventually)
662  *      So we turn it of before disabling and on after enabling if needed.
663  */
664 static int zd1201_enable(struct zd1201 *zd)
665 {
666         int err;
667 
668         if (zd->mac_enabled)
669                 return 0;
670 
671         err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
672         if (!err)
673                 zd->mac_enabled = 1;
674 
675         if (zd->monitor)
676                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
677 
678         return err;
679 }
680 
681 static int zd1201_disable(struct zd1201 *zd)
682 {
683         int err;
684 
685         if (!zd->mac_enabled)
686                 return 0;
687         if (zd->monitor) {
688                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
689                 if (err)
690                         return err;
691         }
692 
693         err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
694         if (!err)
695                 zd->mac_enabled = 0;
696         return err;
697 }
698 
699 static int zd1201_mac_reset(struct zd1201 *zd)
700 {
701         if (!zd->mac_enabled)
702                 return 0;
703         zd1201_disable(zd);
704         return zd1201_enable(zd);
705 }
706 
707 static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
708 {
709         int err, val;
710         char buf[IW_ESSID_MAX_SIZE+2];
711 
712         err = zd1201_disable(zd);
713         if (err)
714                 return err;
715 
716         val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
717         val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
718         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
719         if (err)
720                 return err;
721 
722         *(__le16 *)buf = cpu_to_le16(essidlen);
723         memcpy(buf+2, essid, essidlen);
724         if (!zd->ap) {  /* Normal station */
725                 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
726                     IW_ESSID_MAX_SIZE+2, 1);
727                 if (err)
728                         return err;
729         } else {        /* AP */
730                 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
731                     IW_ESSID_MAX_SIZE+2, 1);
732                 if (err)
733                         return err;
734         }
735 
736         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR, 
737             zd->dev->dev_addr, zd->dev->addr_len, 1);
738         if (err)
739                 return err;
740 
741         err = zd1201_enable(zd);
742         if (err)
743                 return err;
744 
745         msleep(100);
746         return 0;
747 }
748 
749 static int zd1201_net_open(struct net_device *dev)
750 {
751         struct zd1201 *zd = netdev_priv(dev);
752 
753         /* Start MAC with wildcard if no essid set */
754         if (!zd->mac_enabled)
755                 zd1201_join(zd, zd->essid, zd->essidlen);
756         netif_start_queue(dev);
757 
758         return 0;
759 }
760 
761 static int zd1201_net_stop(struct net_device *dev)
762 {
763         netif_stop_queue(dev);
764         return 0;
765 }
766 
767 /*
768         RFC 1042 encapsulates Ethernet frames in 802.11 frames
769         by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
770         (0x00, 0x00, 0x00). Zd requires an additional padding, copy
771         of ethernet addresses, length of the standard RFC 1042 packet
772         and a command byte (which is nul for tx).
773         
774         tx frame (from Wlan NG):
775         RFC 1042:
776                 llc             0xAA 0xAA 0x03 (802.2 LLC)
777                 snap            0x00 0x00 0x00 (Ethernet encapsulated)
778                 type            2 bytes, Ethernet type field
779                 payload         (minus eth header)
780         Zydas specific:
781                 padding         1B if (skb->len+8+1)%64==0
782                 Eth MAC addr    12 bytes, Ethernet MAC addresses
783                 length          2 bytes, RFC 1042 packet length 
784                                 (llc+snap+type+payload)
785                 zd              1 null byte, zd1201 packet type
786  */
787 static netdev_tx_t zd1201_hard_start_xmit(struct sk_buff *skb,
788                                                 struct net_device *dev)
789 {
790         struct zd1201 *zd = netdev_priv(dev);
791         unsigned char *txbuf = zd->txdata;
792         int txbuflen, pad = 0, err;
793         struct urb *urb = zd->tx_urb;
794 
795         if (!zd->mac_enabled || zd->monitor) {
796                 dev->stats.tx_dropped++;
797                 kfree_skb(skb);
798                 return NETDEV_TX_OK;
799         }
800         netif_stop_queue(dev);
801 
802         txbuflen = skb->len + 8 + 1;
803         if (txbuflen%64 == 0) {
804                 pad = 1;
805                 txbuflen++;
806         }
807         txbuf[0] = 0xAA;
808         txbuf[1] = 0xAA;
809         txbuf[2] = 0x03;
810         txbuf[3] = 0x00;        /* rfc1042 */
811         txbuf[4] = 0x00;
812         txbuf[5] = 0x00;
813 
814         skb_copy_from_linear_data_offset(skb, 12, txbuf + 6, skb->len - 12);
815         if (pad)
816                 txbuf[skb->len-12+6]=0;
817         skb_copy_from_linear_data(skb, txbuf + skb->len - 12 + 6 + pad, 12);
818         *(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
819         txbuf[txbuflen-1] = 0;
820 
821         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
822             txbuf, txbuflen, zd1201_usbtx, zd);
823 
824         err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
825         if (err) {
826                 dev->stats.tx_errors++;
827                 netif_start_queue(dev);
828         } else {
829                 dev->stats.tx_packets++;
830                 dev->stats.tx_bytes += skb->len;
831         }
832         kfree_skb(skb);
833 
834         return NETDEV_TX_OK;
835 }
836 
837 static void zd1201_tx_timeout(struct net_device *dev)
838 {
839         struct zd1201 *zd = netdev_priv(dev);
840 
841         if (!zd)
842                 return;
843         dev_warn(&zd->usb->dev, "%s: TX timeout, shooting down urb\n",
844             dev->name);
845         usb_unlink_urb(zd->tx_urb);
846         dev->stats.tx_errors++;
847         /* Restart the timeout to quiet the watchdog: */
848         dev->trans_start = jiffies; /* prevent tx timeout */
849 }
850 
851 static int zd1201_set_mac_address(struct net_device *dev, void *p)
852 {
853         struct sockaddr *addr = p;
854         struct zd1201 *zd = netdev_priv(dev);
855         int err;
856 
857         if (!zd)
858                 return -ENODEV;
859 
860         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR, 
861             addr->sa_data, dev->addr_len, 1);
862         if (err)
863                 return err;
864         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
865 
866         return zd1201_mac_reset(zd);
867 }
868 
869 static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
870 {
871         struct zd1201 *zd = netdev_priv(dev);
872 
873         return &zd->iwstats;
874 }
875 
876 static void zd1201_set_multicast(struct net_device *dev)
877 {
878         struct zd1201 *zd = netdev_priv(dev);
879         struct netdev_hw_addr *ha;
880         unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
881         int i;
882 
883         if (netdev_mc_count(dev) > ZD1201_MAXMULTI)
884                 return;
885 
886         i = 0;
887         netdev_for_each_mc_addr(ha, dev)
888                 memcpy(reqbuf + i++ * ETH_ALEN, ha->addr, ETH_ALEN);
889         zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
890                          netdev_mc_count(dev) * ETH_ALEN, 0);
891 }
892 
893 static int zd1201_config_commit(struct net_device *dev, 
894     struct iw_request_info *info, struct iw_point *data, char *essid)
895 {
896         struct zd1201 *zd = netdev_priv(dev);
897 
898         return zd1201_mac_reset(zd);
899 }
900 
901 static int zd1201_get_name(struct net_device *dev,
902     struct iw_request_info *info, char *name, char *extra)
903 {
904         strcpy(name, "IEEE 802.11b");
905         return 0;
906 }
907 
908 static int zd1201_set_freq(struct net_device *dev,
909     struct iw_request_info *info, struct iw_freq *freq, char *extra)
910 {
911         struct zd1201 *zd = netdev_priv(dev);
912         short channel = 0;
913         int err;
914 
915         if (freq->e == 0)
916                 channel = freq->m;
917         else
918                 channel = ieee80211_frequency_to_channel(freq->m);
919 
920         err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
921         if (err)
922                 return err;
923 
924         zd1201_mac_reset(zd);
925 
926         return 0;
927 }
928 
929 static int zd1201_get_freq(struct net_device *dev,
930     struct iw_request_info *info, struct iw_freq *freq, char *extra)
931 {
932         struct zd1201 *zd = netdev_priv(dev);
933         short channel;
934         int err;
935 
936         err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
937         if (err)
938                 return err;
939         freq->e = 0;
940         freq->m = channel;
941 
942         return 0;
943 }
944 
945 static int zd1201_set_mode(struct net_device *dev,
946     struct iw_request_info *info, __u32 *mode, char *extra)
947 {
948         struct zd1201 *zd = netdev_priv(dev);
949         short porttype, monitor = 0;
950         unsigned char buffer[IW_ESSID_MAX_SIZE+2];
951         int err;
952 
953         if (zd->ap) {
954                 if (*mode != IW_MODE_MASTER)
955                         return -EINVAL;
956                 return 0;
957         }
958 
959         err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
960         if (err)
961                 return err;
962         zd->dev->type = ARPHRD_ETHER;
963         switch(*mode) {
964                 case IW_MODE_MONITOR:
965                         monitor = 1;
966                         zd->dev->type = ARPHRD_IEEE80211;
967                         /* Make sure we are no longer associated with by
968                            setting an 'impossible' essid.
969                            (otherwise we mess up firmware)
970                          */
971                         zd1201_join(zd, "\0-*#\0", 5);
972                         /* Put port in pIBSS */
973                 case 8: /* No pseudo-IBSS in wireless extensions (yet) */
974                         porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
975                         break;
976                 case IW_MODE_ADHOC:
977                         porttype = ZD1201_PORTTYPE_IBSS;
978                         break;
979                 case IW_MODE_INFRA:
980                         porttype = ZD1201_PORTTYPE_BSS;
981                         break;
982                 default:
983                         return -EINVAL;
984         }
985 
986         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
987         if (err)
988                 return err;
989         if (zd->monitor && !monitor) {
990                         zd1201_disable(zd);
991                         *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
992                         memcpy(buffer+2, zd->essid, zd->essidlen);
993                         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
994                             buffer, IW_ESSID_MAX_SIZE+2, 1);
995                         if (err)
996                                 return err;
997         }
998         zd->monitor = monitor;
999         /* If monitor mode is set we don't actually turn it on here since it
1000          * is done during mac reset anyway (see zd1201_mac_enable).
1001          */
1002         zd1201_mac_reset(zd);
1003 
1004         return 0;
1005 }
1006 
1007 static int zd1201_get_mode(struct net_device *dev,
1008     struct iw_request_info *info, __u32 *mode, char *extra)
1009 {
1010         struct zd1201 *zd = netdev_priv(dev);
1011         short porttype;
1012         int err;
1013 
1014         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1015         if (err)
1016                 return err;
1017         switch(porttype) {
1018                 case ZD1201_PORTTYPE_IBSS:
1019                         *mode = IW_MODE_ADHOC;
1020                         break;
1021                 case ZD1201_PORTTYPE_BSS:
1022                         *mode = IW_MODE_INFRA;
1023                         break;
1024                 case ZD1201_PORTTYPE_WDS:
1025                         *mode = IW_MODE_REPEAT;
1026                         break;
1027                 case ZD1201_PORTTYPE_PSEUDOIBSS:
1028                         *mode = 8;/* No Pseudo-IBSS... */
1029                         break;
1030                 case ZD1201_PORTTYPE_AP:
1031                         *mode = IW_MODE_MASTER;
1032                         break;
1033                 default:
1034                         dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1035                             porttype);
1036                         *mode = IW_MODE_AUTO;
1037         }
1038         if (zd->monitor)
1039                 *mode = IW_MODE_MONITOR;
1040 
1041         return 0;
1042 }
1043 
1044 static int zd1201_get_range(struct net_device *dev,
1045     struct iw_request_info *info, struct iw_point *wrq, char *extra)
1046 {
1047         struct iw_range *range = (struct iw_range *)extra;
1048 
1049         wrq->length = sizeof(struct iw_range);
1050         memset(range, 0, sizeof(struct iw_range));
1051         range->we_version_compiled = WIRELESS_EXT;
1052         range->we_version_source = WIRELESS_EXT;
1053 
1054         range->max_qual.qual = 128;
1055         range->max_qual.level = 128;
1056         range->max_qual.noise = 128;
1057         range->max_qual.updated = 7;
1058 
1059         range->encoding_size[0] = 5;
1060         range->encoding_size[1] = 13;
1061         range->num_encoding_sizes = 2;
1062         range->max_encoding_tokens = ZD1201_NUMKEYS;
1063 
1064         range->num_bitrates = 4;
1065         range->bitrate[0] = 1000000;
1066         range->bitrate[1] = 2000000;
1067         range->bitrate[2] = 5500000;
1068         range->bitrate[3] = 11000000;
1069 
1070         range->min_rts = 0;
1071         range->min_frag = ZD1201_FRAGMIN;
1072         range->max_rts = ZD1201_RTSMAX;
1073         range->min_frag = ZD1201_FRAGMAX;
1074 
1075         return 0;
1076 }
1077 
1078 /*      Little bit of magic here: we only get the quality if we poll
1079  *      for it, and we never get an actual request to trigger such
1080  *      a poll. Therefore we 'assume' that the user will soon ask for
1081  *      the stats after asking the bssid.
1082  */
1083 static int zd1201_get_wap(struct net_device *dev,
1084     struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1085 {
1086         struct zd1201 *zd = netdev_priv(dev);
1087         unsigned char buffer[6];
1088 
1089         if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1090                 /* Unfortunately the quality and noise reported is useless.
1091                    they seem to be accumulators that increase until you
1092                    read them, unless we poll on a fixed interval we can't
1093                    use them
1094                  */
1095                 /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1096                 zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1097                 /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1098                 zd->iwstats.qual.updated = 2;
1099         }
1100 
1101         return zd1201_getconfig(zd, ZD1201_RID_CURRENTBSSID, ap_addr->sa_data, 6);
1102 }
1103 
1104 static int zd1201_set_scan(struct net_device *dev,
1105     struct iw_request_info *info, struct iw_point *srq, char *extra)
1106 {
1107         /* We do everything in get_scan */
1108         return 0;
1109 }
1110 
1111 static int zd1201_get_scan(struct net_device *dev,
1112     struct iw_request_info *info, struct iw_point *srq, char *extra)
1113 {
1114         struct zd1201 *zd = netdev_priv(dev);
1115         int err, i, j, enabled_save;
1116         struct iw_event iwe;
1117         char *cev = extra;
1118         char *end_buf = extra + IW_SCAN_MAX_DATA;
1119 
1120         /* No scanning in AP mode */
1121         if (zd->ap)
1122                 return -EOPNOTSUPP;
1123 
1124         /* Scan doesn't seem to work if disabled */
1125         enabled_save = zd->mac_enabled;
1126         zd1201_enable(zd);
1127 
1128         zd->rxdatas = 0;
1129         err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE, 
1130              ZD1201_INQ_SCANRESULTS, 0, 0);
1131         if (err)
1132                 return err;
1133 
1134         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1135         if (!zd->rxlen)
1136                 return -EIO;
1137 
1138         if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1139                 return -EIO;
1140 
1141         for(i=8; i<zd->rxlen; i+=62) {
1142                 iwe.cmd = SIOCGIWAP;
1143                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1144                 memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1145                 cev = iwe_stream_add_event(info, cev, end_buf,
1146                                            &iwe, IW_EV_ADDR_LEN);
1147 
1148                 iwe.cmd = SIOCGIWESSID;
1149                 iwe.u.data.length = zd->rxdata[i+16];
1150                 iwe.u.data.flags = 1;
1151                 cev = iwe_stream_add_point(info, cev, end_buf,
1152                                            &iwe, zd->rxdata+i+18);
1153 
1154                 iwe.cmd = SIOCGIWMODE;
1155                 if (zd->rxdata[i+14]&0x01)
1156                         iwe.u.mode = IW_MODE_MASTER;
1157                 else
1158                         iwe.u.mode = IW_MODE_ADHOC;
1159                 cev = iwe_stream_add_event(info, cev, end_buf,
1160                                            &iwe, IW_EV_UINT_LEN);
1161                 
1162                 iwe.cmd = SIOCGIWFREQ;
1163                 iwe.u.freq.m = zd->rxdata[i+0];
1164                 iwe.u.freq.e = 0;
1165                 cev = iwe_stream_add_event(info, cev, end_buf,
1166                                            &iwe, IW_EV_FREQ_LEN);
1167                 
1168                 iwe.cmd = SIOCGIWRATE;
1169                 iwe.u.bitrate.fixed = 0;
1170                 iwe.u.bitrate.disabled = 0;
1171                 for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
1172                         iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
1173                         cev = iwe_stream_add_event(info, cev, end_buf,
1174                                                    &iwe, IW_EV_PARAM_LEN);
1175                 }
1176                 
1177                 iwe.cmd = SIOCGIWENCODE;
1178                 iwe.u.data.length = 0;
1179                 if (zd->rxdata[i+14]&0x10)
1180                         iwe.u.data.flags = IW_ENCODE_ENABLED;
1181                 else
1182                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1183                 cev = iwe_stream_add_point(info, cev, end_buf, &iwe, NULL);
1184                 
1185                 iwe.cmd = IWEVQUAL;
1186                 iwe.u.qual.qual = zd->rxdata[i+4];
1187                 iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
1188                 iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
1189                 iwe.u.qual.updated = 7;
1190                 cev = iwe_stream_add_event(info, cev, end_buf,
1191                                            &iwe, IW_EV_QUAL_LEN);
1192         }
1193 
1194         if (!enabled_save)
1195                 zd1201_disable(zd);
1196 
1197         srq->length = cev - extra;
1198         srq->flags = 0;
1199 
1200         return 0;
1201 }
1202 
1203 static int zd1201_set_essid(struct net_device *dev,
1204     struct iw_request_info *info, struct iw_point *data, char *essid)
1205 {
1206         struct zd1201 *zd = netdev_priv(dev);
1207 
1208         if (data->length > IW_ESSID_MAX_SIZE)
1209                 return -EINVAL;
1210         if (data->length < 1)
1211                 data->length = 1;
1212         zd->essidlen = data->length;
1213         memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1214         memcpy(zd->essid, essid, data->length);
1215         return zd1201_join(zd, zd->essid, zd->essidlen);
1216 }
1217 
1218 static int zd1201_get_essid(struct net_device *dev,
1219     struct iw_request_info *info, struct iw_point *data, char *essid)
1220 {
1221         struct zd1201 *zd = netdev_priv(dev);
1222 
1223         memcpy(essid, zd->essid, zd->essidlen);
1224         data->flags = 1;
1225         data->length = zd->essidlen;
1226 
1227         return 0;
1228 }
1229 
1230 static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1231     struct iw_point *data, char *nick)
1232 {
1233         strcpy(nick, "zd1201");
1234         data->flags = 1;
1235         data->length = strlen(nick);
1236         return 0;
1237 }
1238 
1239 static int zd1201_set_rate(struct net_device *dev,
1240     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1241 {
1242         struct zd1201 *zd = netdev_priv(dev);
1243         short rate;
1244         int err;
1245 
1246         switch (rrq->value) {
1247                 case 1000000:
1248                         rate = ZD1201_RATEB1;
1249                         break;
1250                 case 2000000:
1251                         rate = ZD1201_RATEB2;
1252                         break;
1253                 case 5500000:
1254                         rate = ZD1201_RATEB5;
1255                         break;
1256                 case 11000000:
1257                 default:
1258                         rate = ZD1201_RATEB11;
1259                         break;
1260         }
1261         if (!rrq->fixed) { /* Also enable all lower bitrates */
1262                 rate |= rate-1;
1263         }
1264 
1265         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1266         if (err)
1267                 return err;
1268 
1269         return zd1201_mac_reset(zd);
1270 }
1271 
1272 static int zd1201_get_rate(struct net_device *dev,
1273     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1274 {
1275         struct zd1201 *zd = netdev_priv(dev);
1276         short rate;
1277         int err;
1278 
1279         err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1280         if (err)
1281                 return err;
1282 
1283         switch(rate) {
1284                 case 1:
1285                         rrq->value = 1000000;
1286                         break;
1287                 case 2:
1288                         rrq->value = 2000000;
1289                         break;
1290                 case 5:
1291                         rrq->value = 5500000;
1292                         break;
1293                 case 11:
1294                         rrq->value = 11000000;
1295                         break;
1296                 default:
1297                         rrq->value = 0;
1298         }
1299         rrq->fixed = 0;
1300         rrq->disabled = 0;
1301 
1302         return 0;
1303 }
1304 
1305 static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1306     struct iw_param *rts, char *extra)
1307 {
1308         struct zd1201 *zd = netdev_priv(dev);
1309         int err;
1310         short val = rts->value;
1311 
1312         if (rts->disabled || !rts->fixed)
1313                 val = ZD1201_RTSMAX;
1314         if (val > ZD1201_RTSMAX)
1315                 return -EINVAL;
1316         if (val < 0)
1317                 return -EINVAL;
1318 
1319         err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1320         if (err)
1321                 return err;
1322         return zd1201_mac_reset(zd);
1323 }
1324 
1325 static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1326     struct iw_param *rts, char *extra)
1327 {
1328         struct zd1201 *zd = netdev_priv(dev);
1329         short rtst;
1330         int err;
1331 
1332         err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1333         if (err)
1334                 return err;
1335         rts->value = rtst;
1336         rts->disabled = (rts->value == ZD1201_RTSMAX);
1337         rts->fixed = 1;
1338 
1339         return 0;
1340 }
1341 
1342 static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1343     struct iw_param *frag, char *extra)
1344 {
1345         struct zd1201 *zd = netdev_priv(dev);
1346         int err;
1347         short val = frag->value;
1348 
1349         if (frag->disabled || !frag->fixed)
1350                 val = ZD1201_FRAGMAX;
1351         if (val > ZD1201_FRAGMAX)
1352                 return -EINVAL;
1353         if (val < ZD1201_FRAGMIN)
1354                 return -EINVAL;
1355         if (val & 1)
1356                 return -EINVAL;
1357         err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1358         if (err)
1359                 return err;
1360         return zd1201_mac_reset(zd);
1361 }
1362 
1363 static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1364     struct iw_param *frag, char *extra)
1365 {
1366         struct zd1201 *zd = netdev_priv(dev);
1367         short fragt;
1368         int err;
1369 
1370         err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1371         if (err)
1372                 return err;
1373         frag->value = fragt;
1374         frag->disabled = (frag->value == ZD1201_FRAGMAX);
1375         frag->fixed = 1;
1376 
1377         return 0;
1378 }
1379 
1380 static int zd1201_set_retry(struct net_device *dev,
1381     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1382 {
1383         return 0;
1384 }
1385 
1386 static int zd1201_get_retry(struct net_device *dev,
1387     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1388 {
1389         return 0;
1390 }
1391 
1392 static int zd1201_set_encode(struct net_device *dev,
1393     struct iw_request_info *info, struct iw_point *erq, char *key)
1394 {
1395         struct zd1201 *zd = netdev_priv(dev);
1396         short i;
1397         int err, rid;
1398 
1399         if (erq->length > ZD1201_MAXKEYLEN)
1400                 return -EINVAL;
1401 
1402         i = (erq->flags & IW_ENCODE_INDEX)-1;
1403         if (i == -1) {
1404                 err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1405                 if (err)
1406                         return err;
1407         } else {
1408                 err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1409                 if (err)
1410                         return err;
1411         }
1412 
1413         if (i < 0 || i >= ZD1201_NUMKEYS)
1414                 return -EINVAL;
1415 
1416         rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1417         err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1418         if (err)
1419                 return err;
1420         zd->encode_keylen[i] = erq->length;
1421         memcpy(zd->encode_keys[i], key, erq->length);
1422 
1423         i=0;
1424         if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1425                 i |= 0x01;
1426                 zd->encode_enabled = 1;
1427         } else
1428                 zd->encode_enabled = 0;
1429         if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1430                 i |= 0x02;
1431                 zd->encode_restricted = 1;
1432         } else
1433                 zd->encode_restricted = 0;
1434         err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1435         if (err)
1436                 return err;
1437 
1438         if (zd->encode_enabled)
1439                 i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1440         else
1441                 i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1442         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1443         if (err)
1444                 return err;
1445 
1446         return zd1201_mac_reset(zd);
1447 }
1448 
1449 static int zd1201_get_encode(struct net_device *dev,
1450     struct iw_request_info *info, struct iw_point *erq, char *key)
1451 {
1452         struct zd1201 *zd = netdev_priv(dev);
1453         short i;
1454         int err;
1455 
1456         if (zd->encode_enabled)
1457                 erq->flags = IW_ENCODE_ENABLED;
1458         else
1459                 erq->flags = IW_ENCODE_DISABLED;
1460         if (zd->encode_restricted)
1461                 erq->flags |= IW_ENCODE_RESTRICTED;
1462         else
1463                 erq->flags |= IW_ENCODE_OPEN;
1464 
1465         i = (erq->flags & IW_ENCODE_INDEX) -1;
1466         if (i == -1) {
1467                 err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1468                 if (err)
1469                         return err;
1470         }
1471         if (i<0 || i>= ZD1201_NUMKEYS)
1472                 return -EINVAL;
1473 
1474         erq->flags |= i+1;
1475 
1476         erq->length = zd->encode_keylen[i];
1477         memcpy(key, zd->encode_keys[i], erq->length);
1478 
1479         return 0;
1480 }
1481 
1482 static int zd1201_set_power(struct net_device *dev, 
1483     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1484 {
1485         struct zd1201 *zd = netdev_priv(dev);
1486         short enabled, duration, level;
1487         int err;
1488 
1489         enabled = vwrq->disabled ? 0 : 1;
1490         if (enabled) {
1491                 if (vwrq->flags & IW_POWER_PERIOD) {
1492                         duration = vwrq->value;
1493                         err = zd1201_setconfig16(zd, 
1494                             ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1495                         if (err)
1496                                 return err;
1497                         goto out;
1498                 }
1499                 if (vwrq->flags & IW_POWER_TIMEOUT) {
1500                         err = zd1201_getconfig16(zd, 
1501                             ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1502                         if (err)
1503                                 return err;
1504                         level = vwrq->value * 4 / duration;
1505                         if (level > 4)
1506                                 level = 4;
1507                         if (level < 0)
1508                                 level = 0;
1509                         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1510                             level);
1511                         if (err)
1512                                 return err;
1513                         goto out;
1514                 }
1515                 return -EINVAL;
1516         }
1517 out:
1518         return zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1519 }
1520 
1521 static int zd1201_get_power(struct net_device *dev,
1522     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1523 {
1524         struct zd1201 *zd = netdev_priv(dev);
1525         short enabled, level, duration;
1526         int err;
1527 
1528         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1529         if (err)
1530                 return err;
1531         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1532         if (err)
1533                 return err;
1534         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1535         if (err)
1536                 return err;
1537         vwrq->disabled = enabled ? 0 : 1;
1538         if (vwrq->flags & IW_POWER_TYPE) {
1539                 if (vwrq->flags & IW_POWER_PERIOD) {
1540                         vwrq->value = duration;
1541                         vwrq->flags = IW_POWER_PERIOD;
1542                 } else {
1543                         vwrq->value = duration * level / 4;
1544                         vwrq->flags = IW_POWER_TIMEOUT;
1545                 }
1546         }
1547         if (vwrq->flags & IW_POWER_MODE) {
1548                 if (enabled && level)
1549                         vwrq->flags = IW_POWER_UNICAST_R;
1550                 else
1551                         vwrq->flags = IW_POWER_ALL_R;
1552         }
1553 
1554         return 0;
1555 }
1556 
1557 
1558 static const iw_handler zd1201_iw_handler[] =
1559 {
1560         (iw_handler) zd1201_config_commit,      /* SIOCSIWCOMMIT */
1561         (iw_handler) zd1201_get_name,           /* SIOCGIWNAME */
1562         (iw_handler) NULL,                      /* SIOCSIWNWID */
1563         (iw_handler) NULL,                      /* SIOCGIWNWID */
1564         (iw_handler) zd1201_set_freq,           /* SIOCSIWFREQ */
1565         (iw_handler) zd1201_get_freq,           /* SIOCGIWFREQ */
1566         (iw_handler) zd1201_set_mode,           /* SIOCSIWMODE */
1567         (iw_handler) zd1201_get_mode,           /* SIOCGIWMODE */
1568         (iw_handler) NULL,                      /* SIOCSIWSENS */
1569         (iw_handler) NULL,                      /* SIOCGIWSENS */
1570         (iw_handler) NULL,                      /* SIOCSIWRANGE */
1571         (iw_handler) zd1201_get_range,           /* SIOCGIWRANGE */
1572         (iw_handler) NULL,                      /* SIOCSIWPRIV */
1573         (iw_handler) NULL,                      /* SIOCGIWPRIV */
1574         (iw_handler) NULL,                      /* SIOCSIWSTATS */
1575         (iw_handler) NULL,                      /* SIOCGIWSTATS */
1576         (iw_handler) NULL,                      /* SIOCSIWSPY */
1577         (iw_handler) NULL,                      /* SIOCGIWSPY */
1578         (iw_handler) NULL,                      /* -- hole -- */
1579         (iw_handler) NULL,                      /* -- hole -- */
1580         (iw_handler) NULL/*zd1201_set_wap*/,            /* SIOCSIWAP */
1581         (iw_handler) zd1201_get_wap,            /* SIOCGIWAP */
1582         (iw_handler) NULL,                      /* -- hole -- */
1583         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
1584         (iw_handler) zd1201_set_scan,           /* SIOCSIWSCAN */
1585         (iw_handler) zd1201_get_scan,           /* SIOCGIWSCAN */
1586         (iw_handler) zd1201_set_essid,          /* SIOCSIWESSID */
1587         (iw_handler) zd1201_get_essid,          /* SIOCGIWESSID */
1588         (iw_handler) NULL,                      /* SIOCSIWNICKN */
1589         (iw_handler) zd1201_get_nick,           /* SIOCGIWNICKN */
1590         (iw_handler) NULL,                      /* -- hole -- */
1591         (iw_handler) NULL,                      /* -- hole -- */
1592         (iw_handler) zd1201_set_rate,           /* SIOCSIWRATE */
1593         (iw_handler) zd1201_get_rate,           /* SIOCGIWRATE */
1594         (iw_handler) zd1201_set_rts,            /* SIOCSIWRTS */
1595         (iw_handler) zd1201_get_rts,            /* SIOCGIWRTS */
1596         (iw_handler) zd1201_set_frag,           /* SIOCSIWFRAG */
1597         (iw_handler) zd1201_get_frag,           /* SIOCGIWFRAG */
1598         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
1599         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
1600         (iw_handler) zd1201_set_retry,          /* SIOCSIWRETRY */
1601         (iw_handler) zd1201_get_retry,          /* SIOCGIWRETRY */
1602         (iw_handler) zd1201_set_encode,         /* SIOCSIWENCODE */
1603         (iw_handler) zd1201_get_encode,         /* SIOCGIWENCODE */
1604         (iw_handler) zd1201_set_power,          /* SIOCSIWPOWER */
1605         (iw_handler) zd1201_get_power,          /* SIOCGIWPOWER */
1606 };
1607 
1608 static int zd1201_set_hostauth(struct net_device *dev,
1609     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1610 {
1611         struct zd1201 *zd = netdev_priv(dev);
1612 
1613         if (!zd->ap)
1614                 return -EOPNOTSUPP;
1615 
1616         return zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1617 }
1618 
1619 static int zd1201_get_hostauth(struct net_device *dev,
1620     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1621 {
1622         struct zd1201 *zd = netdev_priv(dev);
1623         short hostauth;
1624         int err;
1625 
1626         if (!zd->ap)
1627                 return -EOPNOTSUPP;
1628 
1629         err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1630         if (err)
1631                 return err;
1632         rrq->value = hostauth;
1633         rrq->fixed = 1;
1634 
1635         return 0;
1636 }
1637 
1638 static int zd1201_auth_sta(struct net_device *dev,
1639     struct iw_request_info *info, struct sockaddr *sta, char *extra)
1640 {
1641         struct zd1201 *zd = netdev_priv(dev);
1642         unsigned char buffer[10];
1643 
1644         if (!zd->ap)
1645                 return -EOPNOTSUPP;
1646 
1647         memcpy(buffer, sta->sa_data, ETH_ALEN);
1648         *(short*)(buffer+6) = 0;        /* 0==success, 1==failure */
1649         *(short*)(buffer+8) = 0;
1650 
1651         return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1652 }
1653 
1654 static int zd1201_set_maxassoc(struct net_device *dev,
1655     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1656 {
1657         struct zd1201 *zd = netdev_priv(dev);
1658         int err;
1659 
1660         if (!zd->ap)
1661                 return -EOPNOTSUPP;
1662 
1663         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1664         if (err)
1665                 return err;
1666         return 0;
1667 }
1668 
1669 static int zd1201_get_maxassoc(struct net_device *dev,
1670     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1671 {
1672         struct zd1201 *zd = netdev_priv(dev);
1673         short maxassoc;
1674         int err;
1675 
1676         if (!zd->ap)
1677                 return -EOPNOTSUPP;
1678 
1679         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1680         if (err)
1681                 return err;
1682         rrq->value = maxassoc;
1683         rrq->fixed = 1;
1684 
1685         return 0;
1686 }
1687 
1688 static const iw_handler zd1201_private_handler[] = {
1689         (iw_handler) zd1201_set_hostauth,       /* ZD1201SIWHOSTAUTH */
1690         (iw_handler) zd1201_get_hostauth,       /* ZD1201GIWHOSTAUTH */
1691         (iw_handler) zd1201_auth_sta,           /* ZD1201SIWAUTHSTA */
1692         (iw_handler) NULL,                      /* nothing to get */
1693         (iw_handler) zd1201_set_maxassoc,       /* ZD1201SIMAXASSOC */
1694         (iw_handler) zd1201_get_maxassoc,       /* ZD1201GIMAXASSOC */
1695 };
1696 
1697 static const struct iw_priv_args zd1201_private_args[] = {
1698         { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1699             IW_PRIV_TYPE_NONE, "sethostauth" },
1700         { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1701             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1702         { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1703             IW_PRIV_TYPE_NONE, "authstation" },
1704         { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1705             IW_PRIV_TYPE_NONE, "setmaxassoc" },
1706         { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1707             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1708 };
1709 
1710 static const struct iw_handler_def zd1201_iw_handlers = {
1711         .num_standard           = ARRAY_SIZE(zd1201_iw_handler),
1712         .num_private            = ARRAY_SIZE(zd1201_private_handler),
1713         .num_private_args       = ARRAY_SIZE(zd1201_private_args),
1714         .standard               = (iw_handler *)zd1201_iw_handler,
1715         .private                = (iw_handler *)zd1201_private_handler,
1716         .private_args           = (struct iw_priv_args *) zd1201_private_args,
1717         .get_wireless_stats     = zd1201_get_wireless_stats,
1718 };
1719 
1720 static const struct net_device_ops zd1201_netdev_ops = {
1721         .ndo_open               = zd1201_net_open,
1722         .ndo_stop               = zd1201_net_stop,
1723         .ndo_start_xmit         = zd1201_hard_start_xmit,
1724         .ndo_tx_timeout         = zd1201_tx_timeout,
1725         .ndo_set_rx_mode        = zd1201_set_multicast,
1726         .ndo_set_mac_address    = zd1201_set_mac_address,
1727         .ndo_change_mtu         = eth_change_mtu,
1728         .ndo_validate_addr      = eth_validate_addr,
1729 };
1730 
1731 static int zd1201_probe(struct usb_interface *interface,
1732                         const struct usb_device_id *id)
1733 {
1734         struct zd1201 *zd;
1735         struct net_device *dev;
1736         struct usb_device *usb;
1737         int err;
1738         short porttype;
1739         char buf[IW_ESSID_MAX_SIZE+2];
1740 
1741         usb = interface_to_usbdev(interface);
1742 
1743         dev = alloc_etherdev(sizeof(*zd));
1744         if (!dev)
1745                 return -ENOMEM;
1746         zd = netdev_priv(dev);
1747         zd->dev = dev;
1748 
1749         zd->ap = ap;
1750         zd->usb = usb;
1751         zd->removed = 0;
1752         init_waitqueue_head(&zd->rxdataq);
1753         INIT_HLIST_HEAD(&zd->fraglist);
1754         
1755         err = zd1201_fw_upload(usb, zd->ap);
1756         if (err) {
1757                 dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
1758                 goto err_zd;
1759         }
1760         
1761         zd->endp_in = 1;
1762         zd->endp_out = 1;
1763         zd->endp_out2 = 2;
1764         zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1765         zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1766         if (!zd->rx_urb || !zd->tx_urb) {
1767                 err = -ENOMEM;
1768                 goto err_zd;
1769         }
1770 
1771         mdelay(100);
1772         err = zd1201_drvr_start(zd);
1773         if (err)
1774                 goto err_zd;
1775 
1776         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
1777         if (err)
1778                 goto err_start;
1779 
1780         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
1781             ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
1782         if (err)
1783                 goto err_start;
1784 
1785         dev->netdev_ops = &zd1201_netdev_ops;
1786         dev->wireless_handlers = &zd1201_iw_handlers;
1787         dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
1788         strcpy(dev->name, "wlan%d");
1789 
1790         err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR, 
1791             dev->dev_addr, dev->addr_len);
1792         if (err)
1793                 goto err_start;
1794 
1795         /* Set wildcard essid to match zd->essid */
1796         *(__le16 *)buf = cpu_to_le16(0);
1797         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
1798             IW_ESSID_MAX_SIZE+2, 1);
1799         if (err)
1800                 goto err_start;
1801 
1802         if (zd->ap)
1803                 porttype = ZD1201_PORTTYPE_AP;
1804         else
1805                 porttype = ZD1201_PORTTYPE_BSS;
1806         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1807         if (err)
1808                 goto err_start;
1809 
1810         SET_NETDEV_DEV(dev, &usb->dev);
1811 
1812         err = register_netdev(dev);
1813         if (err)
1814                 goto err_start;
1815         dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
1816             dev->name);
1817 
1818         usb_set_intfdata(interface, zd);
1819         zd1201_enable(zd);      /* zd1201 likes to startup enabled, */
1820         zd1201_disable(zd);     /* interfering with all the wifis in range */
1821         return 0;
1822 
1823 err_start:
1824         /* Leave the device in reset state */
1825         zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
1826 err_zd:
1827         usb_free_urb(zd->tx_urb);
1828         usb_free_urb(zd->rx_urb);
1829         free_netdev(dev);
1830         return err;
1831 }
1832 
1833 static void zd1201_disconnect(struct usb_interface *interface)
1834 {
1835         struct zd1201 *zd = usb_get_intfdata(interface);
1836         struct hlist_node *node2;
1837         struct zd1201_frag *frag;
1838 
1839         if (!zd)
1840                 return;
1841         usb_set_intfdata(interface, NULL);
1842 
1843         hlist_for_each_entry_safe(frag, node2, &zd->fraglist, fnode) {
1844                 hlist_del_init(&frag->fnode);
1845                 kfree_skb(frag->skb);
1846                 kfree(frag);
1847         }
1848 
1849         if (zd->tx_urb) {
1850                 usb_kill_urb(zd->tx_urb);
1851                 usb_free_urb(zd->tx_urb);
1852         }
1853         if (zd->rx_urb) {
1854                 usb_kill_urb(zd->rx_urb);
1855                 usb_free_urb(zd->rx_urb);
1856         }
1857 
1858         if (zd->dev) {
1859                 unregister_netdev(zd->dev);
1860                 free_netdev(zd->dev);
1861         }
1862 }
1863 
1864 #ifdef CONFIG_PM
1865 
1866 static int zd1201_suspend(struct usb_interface *interface,
1867                            pm_message_t message)
1868 {
1869         struct zd1201 *zd = usb_get_intfdata(interface);
1870 
1871         netif_device_detach(zd->dev);
1872 
1873         zd->was_enabled = zd->mac_enabled;
1874 
1875         if (zd->was_enabled)
1876                 return zd1201_disable(zd);
1877         else
1878                 return 0;
1879 }
1880 
1881 static int zd1201_resume(struct usb_interface *interface)
1882 {
1883         struct zd1201 *zd = usb_get_intfdata(interface);
1884 
1885         if (!zd || !zd->dev)
1886                 return -ENODEV;
1887 
1888         netif_device_attach(zd->dev);
1889 
1890         if (zd->was_enabled)
1891                 return zd1201_enable(zd);
1892         else
1893                 return 0;
1894 }
1895 
1896 #else
1897 
1898 #define zd1201_suspend NULL
1899 #define zd1201_resume  NULL
1900 
1901 #endif
1902 
1903 static struct usb_driver zd1201_usb = {
1904         .name = "zd1201",
1905         .probe = zd1201_probe,
1906         .disconnect = zd1201_disconnect,
1907         .id_table = zd1201_table,
1908         .suspend = zd1201_suspend,
1909         .resume = zd1201_resume,
1910         .disable_hub_initiated_lpm = 1,
1911 };
1912 
1913 module_usb_driver(zd1201_usb);
1914 

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