Merge trivial low-risk suspend hotkey bugzilla-5918 into release
[linux-2.6] / 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/netdevice.h>
18 #include <linux/etherdevice.h>
19 #include <linux/wireless.h>
20 #include <net/iw_handler.h>
21 #include <linux/string.h>
22 #include <linux/if_arp.h>
23 #include <linux/firmware.h>
24 #include <net/ieee80211.h>
25 #include "zd1201.h"
26
27 static struct usb_device_id zd1201_table[] = {
28         {USB_DEVICE(0x0586, 0x3400)}, /* Peabird Wireless USB Adapter */
29         {USB_DEVICE(0x0ace, 0x1201)}, /* ZyDAS ZD1201 Wireless USB Adapter */
30         {USB_DEVICE(0x050d, 0x6051)}, /* Belkin F5D6051 usb  adapter */
31         {USB_DEVICE(0x0db0, 0x6823)}, /* MSI UB11B usb  adapter */
32         {USB_DEVICE(0x1044, 0x8005)}, /* GIGABYTE GN-WLBZ201 usb adapter */
33         {}
34 };
35
36 static int ap;  /* Are we an AP or a normal station? */
37
38 #define ZD1201_VERSION  "0.15"
39
40 MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>");
41 MODULE_DESCRIPTION("Driver for ZyDAS ZD1201 based USB Wireless adapters");
42 MODULE_VERSION(ZD1201_VERSION);
43 MODULE_LICENSE("GPL");
44 module_param(ap, int, 0);
45 MODULE_PARM_DESC(ap, "If non-zero Access Point firmware will be loaded");
46 MODULE_DEVICE_TABLE(usb, zd1201_table);
47
48
49 static int zd1201_fw_upload(struct usb_device *dev, int apfw)
50 {
51         const struct firmware *fw_entry;
52         char *data;
53         unsigned long len;
54         int err;
55         unsigned char ret;
56         char *buf;
57         char *fwfile;
58
59         if (apfw)
60                 fwfile = "zd1201-ap.fw";
61         else
62                 fwfile = "zd1201.fw";
63
64         err = request_firmware(&fw_entry, fwfile, &dev->dev);
65         if (err) {
66                 dev_err(&dev->dev, "Failed to load %s firmware file!\n", fwfile);
67                 dev_err(&dev->dev, "Make sure the hotplug firmware loader is installed.\n");
68                 dev_err(&dev->dev, "Goto http://linux-lc100020.sourceforge.net for more info.\n");
69                 return err;
70         }
71
72         data = fw_entry->data;
73         len = fw_entry->size;
74
75         buf = kmalloc(1024, GFP_ATOMIC);
76         if (!buf)
77                 goto exit;
78         
79         while (len > 0) {
80                 int translen = (len > 1024) ? 1024 : len;
81                 memcpy(buf, data, translen);
82
83                 err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0,
84                     USB_DIR_OUT | 0x40, 0, 0, buf, translen,
85                     ZD1201_FW_TIMEOUT);
86                 if (err < 0)
87                         goto exit;
88
89                 len -= translen;
90                 data += translen;
91         }
92                                         
93         err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0x2,
94             USB_DIR_OUT | 0x40, 0, 0, NULL, 0, ZD1201_FW_TIMEOUT);
95         if (err < 0)
96                 goto exit;
97
98         err = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 0x4,
99             USB_DIR_IN | 0x40, 0,0, &ret, sizeof(ret), ZD1201_FW_TIMEOUT);
100         if (err < 0)
101                 goto exit;
102
103         if (ret & 0x80) {
104                 err = -EIO;
105                 goto exit;
106         }
107
108         err = 0;
109 exit:
110         kfree(buf);
111         release_firmware(fw_entry);
112         return err;
113 }
114
115 static void zd1201_usbfree(struct urb *urb, struct pt_regs *regs)
116 {
117         struct zd1201 *zd = urb->context;
118
119         switch(urb->status) {
120                 case -EILSEQ:
121                 case -ENODEV:
122                 case -ETIMEDOUT:
123                 case -ENOENT:
124                 case -EPIPE:
125                 case -EOVERFLOW:
126                 case -ESHUTDOWN:
127                         dev_warn(&zd->usb->dev, "%s: urb failed: %d\n", 
128                             zd->dev->name, urb->status);
129         }
130
131         kfree(urb->transfer_buffer);
132         usb_free_urb(urb);
133         return;
134 }
135
136 /* cmdreq message: 
137         u32 type
138         u16 cmd
139         u16 parm0
140         u16 parm1
141         u16 parm2
142         u8  pad[4]
143
144         total: 4 + 2 + 2 + 2 + 2 + 4 = 16
145 */
146 static int zd1201_docmd(struct zd1201 *zd, int cmd, int parm0,
147                         int parm1, int parm2)
148 {
149         unsigned char *command;
150         int ret;
151         struct urb *urb;
152
153         command = kmalloc(16, GFP_ATOMIC);
154         if (!command)
155                 return -ENOMEM;
156
157         *((__le32*)command) = cpu_to_le32(ZD1201_USB_CMDREQ);
158         *((__le16*)&command[4]) = cpu_to_le16(cmd);
159         *((__le16*)&command[6]) = cpu_to_le16(parm0);
160         *((__le16*)&command[8]) = cpu_to_le16(parm1);
161         *((__le16*)&command[10])= cpu_to_le16(parm2);
162
163         urb = usb_alloc_urb(0, GFP_ATOMIC);
164         if (!urb) {
165                 kfree(command);
166                 return -ENOMEM;
167         }
168         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
169                           command, 16, zd1201_usbfree, zd);
170         ret = usb_submit_urb(urb, GFP_ATOMIC);
171         if (ret) {
172                 kfree(command);
173                 usb_free_urb(urb);
174         }
175
176         return ret;
177 }
178
179 /* Callback after sending out a packet */
180 static void zd1201_usbtx(struct urb *urb, struct pt_regs *regs)
181 {
182         struct zd1201 *zd = urb->context;
183         netif_wake_queue(zd->dev);
184         return;
185 }
186
187 /* Incoming data */
188 static void zd1201_usbrx(struct urb *urb, struct pt_regs *regs)
189 {
190         struct zd1201 *zd = urb->context;
191         int free = 0;
192         unsigned char *data = urb->transfer_buffer;
193         struct sk_buff *skb;
194         unsigned char type;
195
196         if (!zd) {
197                 free = 1;
198                 goto exit;
199         }
200
201         switch(urb->status) {
202                 case -EILSEQ:
203                 case -ENODEV:
204                 case -ETIMEDOUT:
205                 case -ENOENT:
206                 case -EPIPE:
207                 case -EOVERFLOW:
208                 case -ESHUTDOWN:
209                         dev_warn(&zd->usb->dev, "%s: rx urb failed: %d\n",
210                             zd->dev->name, urb->status);
211                         free = 1;
212                         goto exit;
213         }
214         
215         if (urb->status != 0 || urb->actual_length == 0)
216                 goto resubmit;
217
218         type = data[0];
219         if (type == ZD1201_PACKET_EVENTSTAT || type == ZD1201_PACKET_RESOURCE) {
220                 memcpy(zd->rxdata, data, urb->actual_length);
221                 zd->rxlen = urb->actual_length;
222                 zd->rxdatas = 1;
223                 wake_up(&zd->rxdataq);
224         }
225         /* Info frame */
226         if (type == ZD1201_PACKET_INQUIRE) {
227                 int i = 0;
228                 unsigned short infotype, framelen, copylen;
229                 framelen = le16_to_cpu(*(__le16*)&data[4]);
230                 infotype = le16_to_cpu(*(__le16*)&data[6]);
231
232                 if (infotype == ZD1201_INF_LINKSTATUS) {
233                         short linkstatus;
234
235                         linkstatus = le16_to_cpu(*(__le16*)&data[8]);
236                         switch(linkstatus) {
237                                 case 1:
238                                         netif_carrier_on(zd->dev);
239                                         break;
240                                 case 2:
241                                         netif_carrier_off(zd->dev);
242                                         break;
243                                 case 3:
244                                         netif_carrier_off(zd->dev);
245                                         break;
246                                 case 4:
247                                         netif_carrier_on(zd->dev);
248                                         break;
249                                 default:
250                                         netif_carrier_off(zd->dev);
251                         }
252                         goto resubmit;
253                 }
254                 if (infotype == ZD1201_INF_ASSOCSTATUS) {
255                         short status = le16_to_cpu(*(__le16*)(data+8));
256                         int event;
257                         union iwreq_data wrqu;
258
259                         switch (status) {
260                                 case ZD1201_ASSOCSTATUS_STAASSOC:
261                                 case ZD1201_ASSOCSTATUS_REASSOC:
262                                         event = IWEVREGISTERED;
263                                         break;
264                                 case ZD1201_ASSOCSTATUS_DISASSOC:
265                                 case ZD1201_ASSOCSTATUS_ASSOCFAIL:
266                                 case ZD1201_ASSOCSTATUS_AUTHFAIL:
267                                 default:
268                                         event = IWEVEXPIRED;
269                         }
270                         memcpy(wrqu.addr.sa_data, data+10, ETH_ALEN);
271                         wrqu.addr.sa_family = ARPHRD_ETHER;
272
273                         /* Send event to user space */
274                         wireless_send_event(zd->dev, event, &wrqu, NULL);
275
276                         goto resubmit;
277                 }
278                 if (infotype == ZD1201_INF_AUTHREQ) {
279                         union iwreq_data wrqu;
280
281                         memcpy(wrqu.addr.sa_data, data+8, ETH_ALEN);
282                         wrqu.addr.sa_family = ARPHRD_ETHER;
283                         /* There isn't a event that trully fits this request.
284                            We assume that userspace will be smart enough to
285                            see a new station being expired and sends back a
286                            authstation ioctl to authorize it. */
287                         wireless_send_event(zd->dev, IWEVEXPIRED, &wrqu, NULL);
288                         goto resubmit;
289                 }
290                 /* Other infotypes are handled outside this handler */
291                 zd->rxlen = 0;
292                 while (i < urb->actual_length) {
293                         copylen = le16_to_cpu(*(__le16*)&data[i+2]);
294                         /* Sanity check, sometimes we get junk */
295                         if (copylen+zd->rxlen > sizeof(zd->rxdata))
296                                 break;
297                         memcpy(zd->rxdata+zd->rxlen, data+i+4, copylen);
298                         zd->rxlen += copylen;
299                         i += 64;
300                 }
301                 if (i >= urb->actual_length) {
302                         zd->rxdatas = 1;
303                         wake_up(&zd->rxdataq);
304                 }
305                 goto  resubmit;
306         }
307         /* Actual data */
308         if (data[urb->actual_length-1] == ZD1201_PACKET_RXDATA) {
309                 int datalen = urb->actual_length-1;
310                 unsigned short len, fc, seq;
311                 struct hlist_node *node;
312
313                 len = ntohs(*(__be16 *)&data[datalen-2]);
314                 if (len>datalen)
315                         len=datalen;
316                 fc = le16_to_cpu(*(__le16 *)&data[datalen-16]);
317                 seq = le16_to_cpu(*(__le16 *)&data[datalen-24]);
318
319                 if (zd->monitor) {
320                         if (datalen < 24)
321                                 goto resubmit;
322                         if (!(skb = dev_alloc_skb(datalen+24)))
323                                 goto resubmit;
324                         
325                         memcpy(skb_put(skb, 2), &data[datalen-16], 2);
326                         memcpy(skb_put(skb, 2), &data[datalen-2], 2);
327                         memcpy(skb_put(skb, 6), &data[datalen-14], 6);
328                         memcpy(skb_put(skb, 6), &data[datalen-22], 6);
329                         memcpy(skb_put(skb, 6), &data[datalen-8], 6);
330                         memcpy(skb_put(skb, 2), &data[datalen-24], 2);
331                         memcpy(skb_put(skb, len), data, len);
332                         skb->dev = zd->dev;
333                         skb->dev->last_rx = jiffies;
334                         skb->protocol = eth_type_trans(skb, zd->dev);
335                         zd->stats.rx_packets++;
336                         zd->stats.rx_bytes += skb->len;
337                         netif_rx(skb);
338                         goto resubmit;
339                 }
340                         
341                 if ((seq & IEEE80211_SCTL_FRAG) ||
342                     (fc & IEEE80211_FCTL_MOREFRAGS)) {
343                         struct zd1201_frag *frag = NULL;
344                         char *ptr;
345
346                         if (datalen<14)
347                                 goto resubmit;
348                         if ((seq & IEEE80211_SCTL_FRAG) == 0) {
349                                 frag = kmalloc(sizeof(*frag), GFP_ATOMIC);
350                                 if (!frag)
351                                         goto resubmit;
352                                 skb = dev_alloc_skb(IEEE80211_DATA_LEN +14+2);
353                                 if (!skb) {
354                                         kfree(frag);
355                                         goto resubmit;
356                                 }
357                                 frag->skb = skb;
358                                 frag->seq = seq & IEEE80211_SCTL_SEQ;
359                                 skb_reserve(skb, 2);
360                                 memcpy(skb_put(skb, 12), &data[datalen-14], 12);
361                                 memcpy(skb_put(skb, 2), &data[6], 2);
362                                 memcpy(skb_put(skb, len), data+8, len);
363                                 hlist_add_head(&frag->fnode, &zd->fraglist);
364                                 goto resubmit;
365                         }
366                         hlist_for_each_entry(frag, node, &zd->fraglist, fnode)
367                                 if (frag->seq == (seq&IEEE80211_SCTL_SEQ))
368                                         break;
369                         if (!frag)
370                                 goto resubmit;
371                         skb = frag->skb;
372                         ptr = skb_put(skb, len);
373                         if (ptr)
374                                 memcpy(ptr, data+8, len);
375                         if (fc & IEEE80211_FCTL_MOREFRAGS)
376                                 goto resubmit;
377                         hlist_del_init(&frag->fnode);
378                         kfree(frag);
379                 } else {
380                         if (datalen<14)
381                                 goto resubmit;
382                         skb = dev_alloc_skb(len + 14 + 2);
383                         if (!skb)
384                                 goto resubmit;
385                         skb_reserve(skb, 2);
386                         memcpy(skb_put(skb, 12), &data[datalen-14], 12);
387                         memcpy(skb_put(skb, 2), &data[6], 2);
388                         memcpy(skb_put(skb, len), data+8, len);
389                 }
390                 skb->dev = zd->dev;
391                 skb->dev->last_rx = jiffies;
392                 skb->protocol = eth_type_trans(skb, zd->dev);
393                 zd->stats.rx_packets++;
394                 zd->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         return;
413 }
414
415 static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
416         unsigned int riddatalen)
417 {
418         int err;
419         int i = 0;
420         int code;
421         int rid_fid;
422         int length;
423         unsigned char *pdata;
424
425         zd->rxdatas = 0;
426         err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
427         if (err)
428                 return err;
429
430         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
431         if (!zd->rxlen)
432                 return -EIO;
433
434         code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
435         rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
436         length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
437         if (length > zd->rxlen)
438                 length = zd->rxlen-6;
439
440         /* If access bit is not on, then error */
441         if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
442                 return -EINVAL;
443
444         /* Not enough buffer for allocating data */
445         if (riddatalen != (length - 4)) {
446                 dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
447                     riddatalen, zd->rxlen, length, rid, rid_fid);
448                 return -ENODATA;
449         }
450
451         zd->rxdatas = 0;
452         /* Issue SetRxRid commnd */                     
453         err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
454         if (err)
455                 return err;
456
457         /* Receive RID record from resource packets */
458         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
459         if (!zd->rxlen)
460                 return -EIO;
461
462         if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
463                 dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
464                     zd->rxdata[zd->rxlen-1]);
465                 return -EINVAL;
466         }
467
468         /* Set the data pointer and received data length */
469         pdata = zd->rxdata;
470         length = zd->rxlen;
471
472         do {
473                 int actual_length;
474
475                 actual_length = (length > 64) ? 64 : length;
476
477                 if (pdata[0] != 0x3) {
478                         dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
479                             pdata[0]);
480                         return -EINVAL;
481                 }
482
483                 if (actual_length != 64) {
484                         /* Trim the last packet type byte */
485                         actual_length--;
486                 }
487
488                 /* Skip the 4 bytes header (RID length and RID) */
489                 if (i == 0) {
490                         pdata += 8;
491                         actual_length -= 8;
492                 } else {
493                         pdata += 4;
494                         actual_length -= 4;
495                 }
496                 
497                 memcpy(riddata, pdata, actual_length);
498                 riddata += actual_length;
499                 pdata += actual_length;
500                 length -= 64;
501                 i++;
502         } while (length > 0);
503
504         return 0;
505 }
506
507 /*
508  *      resreq:
509  *              byte    type
510  *              byte    sequence
511  *              u16     reserved
512  *              byte    data[12]
513  *      total: 16
514  */
515 static int zd1201_setconfig(struct zd1201 *zd, int rid, void *buf, int len, int wait)
516 {
517         int err;
518         unsigned char *request;
519         int reqlen;
520         char seq=0;
521         struct urb *urb;
522         gfp_t gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
523
524         len += 4;                       /* first 4 are for header */
525
526         zd->rxdatas = 0;
527         zd->rxlen = 0;
528         for (seq=0; len > 0; seq++) {
529                 request = kmalloc(16, gfp_mask);
530                 if (!request)
531                         return -ENOMEM;
532                 urb = usb_alloc_urb(0, gfp_mask);
533                 if (!urb) {
534                         kfree(request);
535                         return -ENOMEM;
536                 }
537                 memset(request, 0, 16);
538                 reqlen = len>12 ? 12 : len;
539                 request[0] = ZD1201_USB_RESREQ;
540                 request[1] = seq;
541                 request[2] = 0;
542                 request[3] = 0;
543                 if (request[1] == 0) {
544                         /* add header */
545                         *(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
546                         *(__le16*)&request[6] = cpu_to_le16(rid);
547                         memcpy(request+8, buf, reqlen-4);
548                         buf += reqlen-4;
549                 } else {
550                         memcpy(request+4, buf, reqlen);
551                         buf += reqlen;
552                 }
553
554                 len -= reqlen;
555
556                 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
557                     zd->endp_out2), request, 16, zd1201_usbfree, zd);
558                 err = usb_submit_urb(urb, gfp_mask);
559                 if (err)
560                         goto err;
561         }
562
563         request = kmalloc(16, gfp_mask);
564         if (!request)
565                 return -ENOMEM;
566         urb = usb_alloc_urb(0, gfp_mask);
567         if (!urb) {
568                 kfree(request);
569                 return -ENOMEM;
570         }
571         *((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
572         *((__le16*)&request[4]) = 
573             cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
574         *((__le16*)&request[6]) = cpu_to_le16(rid);
575         *((__le16*)&request[8]) = cpu_to_le16(0);
576         *((__le16*)&request[10]) = cpu_to_le16(0);
577         usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
578              request, 16, zd1201_usbfree, zd);
579         err = usb_submit_urb(urb, gfp_mask);
580         if (err)
581                 goto err;
582         
583         if (wait) {
584                 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
585                 if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
586                         dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
587                 }
588         }
589
590         return 0;
591 err:
592         kfree(request);
593         usb_free_urb(urb);
594         return err;
595 }
596
597 static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
598 {
599         int err;
600         __le16 zdval;
601
602         err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
603         if (err)
604                 return err;
605         *val = le16_to_cpu(zdval);
606         return 0;
607 }
608
609 static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
610 {
611         __le16 zdval = cpu_to_le16(val);
612         return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
613 }
614
615 static int zd1201_drvr_start(struct zd1201 *zd)
616 {
617         int err, i;
618         short max;
619         __le16 zdmax;
620         unsigned char *buffer;
621
622         buffer = kzalloc(ZD1201_RXSIZE, GFP_KERNEL);
623         if (!buffer)
624                 return -ENOMEM;
625
626         usb_fill_bulk_urb(zd->rx_urb, zd->usb, 
627             usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
628             zd1201_usbrx, zd);
629
630         err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
631         if (err)
632                 goto err_buffer;
633
634         err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
635         if (err)
636                 goto err_urb;
637
638         err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
639             sizeof(__le16));
640         if (err)
641                 goto err_urb;
642
643         max = le16_to_cpu(zdmax);
644         for (i=0; i<max; i++) {
645                 err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
646                 if (err)
647                         goto err_urb;
648         }
649
650         return 0;
651
652 err_urb:
653         usb_kill_urb(zd->rx_urb);
654         return err;
655 err_buffer:
656         kfree(buffer);
657         return err;
658 }
659
660 /*      Magic alert: The firmware doesn't seem to like the MAC state being
661  *      toggled in promisc (aka monitor) mode.
662  *      (It works a number of times, but will halt eventually)
663  *      So we turn it of before disabling and on after enabling if needed.
664  */
665 static int zd1201_enable(struct zd1201 *zd)
666 {
667         int err;
668
669         if (zd->mac_enabled)
670                 return 0;
671
672         err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
673         if (!err)
674                 zd->mac_enabled = 1;
675
676         if (zd->monitor)
677                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
678
679         return err;
680 }
681
682 static int zd1201_disable(struct zd1201 *zd)
683 {
684         int err;
685
686         if (!zd->mac_enabled)
687                 return 0;
688         if (zd->monitor) {
689                 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
690                 if (err)
691                         return err;
692         }
693
694         err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
695         if (!err)
696                 zd->mac_enabled = 0;
697         return err;
698 }
699
700 static int zd1201_mac_reset(struct zd1201 *zd)
701 {
702         if (!zd->mac_enabled)
703                 return 0;
704         zd1201_disable(zd);
705         return zd1201_enable(zd);
706 }
707
708 static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
709 {
710         int err, val;
711         char buf[IW_ESSID_MAX_SIZE+2];
712
713         err = zd1201_disable(zd);
714         if (err)
715                 return err;
716
717         val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
718         val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
719         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
720         if (err)
721                 return err;
722
723         *(__le16 *)buf = cpu_to_le16(essidlen);
724         memcpy(buf+2, essid, essidlen);
725         if (!zd->ap) {  /* Normal station */
726                 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
727                     IW_ESSID_MAX_SIZE+2, 1);
728                 if (err)
729                         return err;
730         } else {        /* AP */
731                 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
732                     IW_ESSID_MAX_SIZE+2, 1);
733                 if (err)
734                         return err;
735         }
736
737         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR, 
738             zd->dev->dev_addr, zd->dev->addr_len, 1);
739         if (err)
740                 return err;
741
742         err = zd1201_enable(zd);
743         if (err)
744                 return err;
745
746         msleep(100);
747         return 0;
748 }
749
750 static int zd1201_net_open(struct net_device *dev)
751 {
752         struct zd1201 *zd = (struct zd1201 *)dev->priv;
753
754         /* Start MAC with wildcard if no essid set */
755         if (!zd->mac_enabled)
756                 zd1201_join(zd, zd->essid, zd->essidlen);
757         netif_start_queue(dev);
758
759         return 0;
760 }
761
762 static int zd1201_net_stop(struct net_device *dev)
763 {
764         netif_stop_queue(dev);
765         return 0;
766 }
767
768 /*
769         RFC 1042 encapsulates Ethernet frames in 802.11 frames
770         by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
771         (0x00, 0x00, 0x00). Zd requires an additional padding, copy
772         of ethernet addresses, length of the standard RFC 1042 packet
773         and a command byte (which is nul for tx).
774         
775         tx frame (from Wlan NG):
776         RFC 1042:
777                 llc             0xAA 0xAA 0x03 (802.2 LLC)
778                 snap            0x00 0x00 0x00 (Ethernet encapsulated)
779                 type            2 bytes, Ethernet type field
780                 payload         (minus eth header)
781         Zydas specific:
782                 padding         1B if (skb->len+8+1)%64==0
783                 Eth MAC addr    12 bytes, Ethernet MAC addresses
784                 length          2 bytes, RFC 1042 packet length 
785                                 (llc+snap+type+payload)
786                 zd              1 null byte, zd1201 packet type
787  */
788 static int zd1201_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
789 {
790         struct zd1201 *zd = (struct zd1201 *)dev->priv;
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                 zd->stats.tx_dropped++;
797                 kfree_skb(skb);
798                 return 0;
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         memcpy(txbuf+6, skb->data+12, skb->len-12);
815         if (pad)
816                 txbuf[skb->len-12+6]=0;
817         memcpy(txbuf+skb->len-12+6+pad, skb->data, 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                 zd->stats.tx_errors++;
827                 netif_start_queue(dev);
828                 return err;
829         }
830         zd->stats.tx_packets++;
831         zd->stats.tx_bytes += skb->len;
832         dev->trans_start = jiffies;
833         kfree_skb(skb);
834
835         return 0;
836 }
837
838 static void zd1201_tx_timeout(struct net_device *dev)
839 {
840         struct zd1201 *zd = (struct zd1201 *)dev->priv;
841
842         if (!zd)
843                 return;
844         dev_warn(&zd->usb->dev, "%s: TX timeout, shooting down urb\n",
845             dev->name);
846         usb_unlink_urb(zd->tx_urb);
847         zd->stats.tx_errors++;
848         /* Restart the timeout to quiet the watchdog: */
849         dev->trans_start = jiffies;
850 }
851
852 static int zd1201_set_mac_address(struct net_device *dev, void *p)
853 {
854         struct sockaddr *addr = p;
855         struct zd1201 *zd = (struct zd1201 *)dev->priv;
856         int err;
857
858         if (!zd)
859                 return -ENODEV;
860
861         err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR, 
862             addr->sa_data, dev->addr_len, 1);
863         if (err)
864                 return err;
865         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
866
867         return zd1201_mac_reset(zd);
868 }
869
870 static struct net_device_stats *zd1201_get_stats(struct net_device *dev)
871 {
872         struct zd1201 *zd = (struct zd1201 *)dev->priv;
873
874         return &zd->stats;
875 }
876
877 static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
878 {
879         struct zd1201 *zd = (struct zd1201 *)dev->priv;
880
881         return &zd->iwstats;
882 }
883
884 static void zd1201_set_multicast(struct net_device *dev)
885 {
886         struct zd1201 *zd = (struct zd1201 *)dev->priv;
887         struct dev_mc_list *mc = dev->mc_list;
888         unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
889         int i;
890
891         if (dev->mc_count > ZD1201_MAXMULTI)
892                 return;
893
894         for (i=0; i<dev->mc_count; i++) {
895                 memcpy(reqbuf+i*ETH_ALEN, mc->dmi_addr, ETH_ALEN);
896                 mc = mc->next;
897         }
898         zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
899             dev->mc_count*ETH_ALEN, 0);
900         
901 }
902
903 static int zd1201_config_commit(struct net_device *dev, 
904     struct iw_request_info *info, struct iw_point *data, char *essid)
905 {
906         struct zd1201 *zd = (struct zd1201 *)dev->priv;
907
908         return zd1201_mac_reset(zd);
909 }
910
911 static int zd1201_get_name(struct net_device *dev,
912     struct iw_request_info *info, char *name, char *extra)
913 {
914         strcpy(name, "IEEE 802.11b");
915         return 0;
916 }
917
918 static int zd1201_set_freq(struct net_device *dev,
919     struct iw_request_info *info, struct iw_freq *freq, char *extra)
920 {
921         struct zd1201 *zd = (struct zd1201 *)dev->priv;
922         short channel = 0;
923         int err;
924
925         if (freq->e == 0)
926                 channel = freq->m;
927         else {
928                 if (freq->m >= 2482)
929                         channel = 14;
930                 if (freq->m >= 2407)
931                         channel = (freq->m-2407)/5;
932         }
933
934         err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
935         if (err)
936                 return err;
937
938         zd1201_mac_reset(zd);
939
940         return 0;
941 }
942
943 static int zd1201_get_freq(struct net_device *dev,
944     struct iw_request_info *info, struct iw_freq *freq, char *extra)
945 {
946         struct zd1201 *zd = (struct zd1201 *)dev->priv;
947         short channel;
948         int err;
949
950         err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
951         if (err)
952                 return err;
953         freq->e = 0;
954         freq->m = channel;
955
956         return 0;
957 }
958
959 static int zd1201_set_mode(struct net_device *dev,
960     struct iw_request_info *info, __u32 *mode, char *extra)
961 {
962         struct zd1201 *zd = (struct zd1201 *)dev->priv;
963         short porttype, monitor = 0;
964         unsigned char buffer[IW_ESSID_MAX_SIZE+2];
965         int err;
966
967         if (zd->ap) {
968                 if (*mode != IW_MODE_MASTER)
969                         return -EINVAL;
970                 return 0;
971         }
972
973         err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
974         if (err)
975                 return err;
976         zd->dev->type = ARPHRD_ETHER;
977         switch(*mode) {
978                 case IW_MODE_MONITOR:
979                         monitor = 1;
980                         zd->dev->type = ARPHRD_IEEE80211;
981                         /* Make sure we are no longer associated with by
982                            setting an 'impossible' essid.
983                            (otherwise we mess up firmware)
984                          */
985                         zd1201_join(zd, "\0-*#\0", 5);
986                         /* Put port in pIBSS */
987                 case 8: /* No pseudo-IBSS in wireless extensions (yet) */
988                         porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
989                         break;
990                 case IW_MODE_ADHOC:
991                         porttype = ZD1201_PORTTYPE_IBSS;
992                         break;
993                 case IW_MODE_INFRA:
994                         porttype = ZD1201_PORTTYPE_BSS;
995                         break;
996                 default:
997                         return -EINVAL;
998         }
999
1000         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1001         if (err)
1002                 return err;
1003         if (zd->monitor && !monitor) {
1004                         zd1201_disable(zd);
1005                         *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
1006                         memcpy(buffer+2, zd->essid, zd->essidlen);
1007                         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
1008                             buffer, IW_ESSID_MAX_SIZE+2, 1);
1009                         if (err)
1010                                 return err;
1011         }
1012         zd->monitor = monitor;
1013         /* If monitor mode is set we don't actually turn it on here since it
1014          * is done during mac reset anyway (see zd1201_mac_enable).
1015          */
1016         zd1201_mac_reset(zd);
1017
1018         return 0;
1019 }
1020
1021 static int zd1201_get_mode(struct net_device *dev,
1022     struct iw_request_info *info, __u32 *mode, char *extra)
1023 {
1024         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1025         short porttype;
1026         int err;
1027
1028         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1029         if (err)
1030                 return err;
1031         switch(porttype) {
1032                 case ZD1201_PORTTYPE_IBSS:
1033                         *mode = IW_MODE_ADHOC;
1034                         break;
1035                 case ZD1201_PORTTYPE_BSS:
1036                         *mode = IW_MODE_INFRA;
1037                         break;
1038                 case ZD1201_PORTTYPE_WDS:
1039                         *mode = IW_MODE_REPEAT;
1040                         break;
1041                 case ZD1201_PORTTYPE_PSEUDOIBSS:
1042                         *mode = 8;/* No Pseudo-IBSS... */
1043                         break;
1044                 case ZD1201_PORTTYPE_AP:
1045                         *mode = IW_MODE_MASTER;
1046                         break;
1047                 default:
1048                         dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1049                             porttype);
1050                         *mode = IW_MODE_AUTO;
1051         }
1052         if (zd->monitor)
1053                 *mode = IW_MODE_MONITOR;
1054
1055         return 0;
1056 }
1057
1058 static int zd1201_get_range(struct net_device *dev,
1059     struct iw_request_info *info, struct iw_point *wrq, char *extra)
1060 {
1061         struct iw_range *range = (struct iw_range *)extra;
1062
1063         wrq->length = sizeof(struct iw_range);
1064         memset(range, 0, sizeof(struct iw_range));
1065         range->we_version_compiled = WIRELESS_EXT;
1066         range->we_version_source = WIRELESS_EXT;
1067
1068         range->max_qual.qual = 128;
1069         range->max_qual.level = 128;
1070         range->max_qual.noise = 128;
1071         range->max_qual.updated = 7;
1072
1073         range->encoding_size[0] = 5;
1074         range->encoding_size[1] = 13;
1075         range->num_encoding_sizes = 2;
1076         range->max_encoding_tokens = ZD1201_NUMKEYS;
1077
1078         range->num_bitrates = 4;
1079         range->bitrate[0] = 1000000;
1080         range->bitrate[1] = 2000000;
1081         range->bitrate[2] = 5500000;
1082         range->bitrate[3] = 11000000;
1083
1084         range->min_rts = 0;
1085         range->min_frag = ZD1201_FRAGMIN;
1086         range->max_rts = ZD1201_RTSMAX;
1087         range->min_frag = ZD1201_FRAGMAX;
1088
1089         return 0;
1090 }
1091
1092 /*      Little bit of magic here: we only get the quality if we poll
1093  *      for it, and we never get an actual request to trigger such
1094  *      a poll. Therefore we 'assume' that the user will soon ask for
1095  *      the stats after asking the bssid.
1096  */
1097 static int zd1201_get_wap(struct net_device *dev,
1098     struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1099 {
1100         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1101         unsigned char buffer[6];
1102
1103         if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1104                 /* Unfortunately the quality and noise reported is useless.
1105                    they seem to be accumulators that increase until you
1106                    read them, unless we poll on a fixed interval we can't
1107                    use them
1108                  */
1109                 /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1110                 zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1111                 /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1112                 zd->iwstats.qual.updated = 2;
1113         }
1114
1115         return zd1201_getconfig(zd, ZD1201_RID_CURRENTBSSID, ap_addr->sa_data, 6);
1116 }
1117
1118 static int zd1201_set_scan(struct net_device *dev,
1119     struct iw_request_info *info, struct iw_point *srq, char *extra)
1120 {
1121         /* We do everything in get_scan */
1122         return 0;
1123 }
1124
1125 static int zd1201_get_scan(struct net_device *dev,
1126     struct iw_request_info *info, struct iw_point *srq, char *extra)
1127 {
1128         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1129         int err, i, j, enabled_save;
1130         struct iw_event iwe;
1131         char *cev = extra;
1132         char *end_buf = extra + IW_SCAN_MAX_DATA;
1133
1134         /* No scanning in AP mode */
1135         if (zd->ap)
1136                 return -EOPNOTSUPP;
1137
1138         /* Scan doesn't seem to work if disabled */
1139         enabled_save = zd->mac_enabled;
1140         zd1201_enable(zd);
1141
1142         zd->rxdatas = 0;
1143         err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE, 
1144              ZD1201_INQ_SCANRESULTS, 0, 0);
1145         if (err)
1146                 return err;
1147
1148         wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1149         if (!zd->rxlen)
1150                 return -EIO;
1151
1152         if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1153                 return -EIO;
1154
1155         for(i=8; i<zd->rxlen; i+=62) {
1156                 iwe.cmd = SIOCGIWAP;
1157                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1158                 memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1159                 cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_ADDR_LEN);
1160
1161                 iwe.cmd = SIOCGIWESSID;
1162                 iwe.u.data.length = zd->rxdata[i+16];
1163                 iwe.u.data.flags = 1;
1164                 cev = iwe_stream_add_point(cev, end_buf, &iwe, zd->rxdata+i+18);
1165
1166                 iwe.cmd = SIOCGIWMODE;
1167                 if (zd->rxdata[i+14]&0x01)
1168                         iwe.u.mode = IW_MODE_MASTER;
1169                 else
1170                         iwe.u.mode = IW_MODE_ADHOC;
1171                 cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_UINT_LEN);
1172                 
1173                 iwe.cmd = SIOCGIWFREQ;
1174                 iwe.u.freq.m = zd->rxdata[i+0];
1175                 iwe.u.freq.e = 0;
1176                 cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_FREQ_LEN);
1177                 
1178                 iwe.cmd = SIOCGIWRATE;
1179                 iwe.u.bitrate.fixed = 0;
1180                 iwe.u.bitrate.disabled = 0;
1181                 for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
1182                         iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
1183                         cev=iwe_stream_add_event(cev, end_buf, &iwe,
1184                             IW_EV_PARAM_LEN);
1185                 }
1186                 
1187                 iwe.cmd = SIOCGIWENCODE;
1188                 iwe.u.data.length = 0;
1189                 if (zd->rxdata[i+14]&0x10)
1190                         iwe.u.data.flags = IW_ENCODE_ENABLED;
1191                 else
1192                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1193                 cev = iwe_stream_add_point(cev, end_buf, &iwe, NULL);
1194                 
1195                 iwe.cmd = IWEVQUAL;
1196                 iwe.u.qual.qual = zd->rxdata[i+4];
1197                 iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
1198                 iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
1199                 iwe.u.qual.updated = 7;
1200                 cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_QUAL_LEN);
1201         }
1202
1203         if (!enabled_save)
1204                 zd1201_disable(zd);
1205
1206         srq->length = cev - extra;
1207         srq->flags = 0;
1208
1209         return 0;
1210 }
1211
1212 static int zd1201_set_essid(struct net_device *dev,
1213     struct iw_request_info *info, struct iw_point *data, char *essid)
1214 {
1215         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1216
1217         if (data->length > IW_ESSID_MAX_SIZE)
1218                 return -EINVAL;
1219         if (data->length < 1)
1220                 data->length = 1;
1221         zd->essidlen = data->length-1;
1222         memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1223         memcpy(zd->essid, essid, data->length);
1224         return zd1201_join(zd, zd->essid, zd->essidlen);
1225 }
1226
1227 static int zd1201_get_essid(struct net_device *dev,
1228     struct iw_request_info *info, struct iw_point *data, char *essid)
1229 {
1230         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1231
1232         memcpy(essid, zd->essid, zd->essidlen);
1233         data->flags = 1;
1234         data->length = zd->essidlen;
1235
1236         return 0;
1237 }
1238
1239 static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1240     struct iw_point *data, char *nick)
1241 {
1242         strcpy(nick, "zd1201");
1243         data->flags = 1;
1244         data->length = strlen(nick);
1245         return 0;
1246 }
1247
1248 static int zd1201_set_rate(struct net_device *dev,
1249     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1250 {
1251         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1252         short rate;
1253         int err;
1254
1255         switch (rrq->value) {
1256                 case 1000000:
1257                         rate = ZD1201_RATEB1;
1258                         break;
1259                 case 2000000:
1260                         rate = ZD1201_RATEB2;
1261                         break;
1262                 case 5500000:
1263                         rate = ZD1201_RATEB5;
1264                         break;
1265                 case 11000000:
1266                 default:
1267                         rate = ZD1201_RATEB11;
1268                         break;
1269         }
1270         if (!rrq->fixed) { /* Also enable all lower bitrates */
1271                 rate |= rate-1;
1272         }
1273
1274         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1275         if (err)
1276                 return err;
1277
1278         return zd1201_mac_reset(zd);
1279 }
1280
1281 static int zd1201_get_rate(struct net_device *dev,
1282     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1283 {
1284         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1285         short rate;
1286         int err;
1287
1288         err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1289         if (err)
1290                 return err;
1291
1292         switch(rate) {
1293                 case 1:
1294                         rrq->value = 1000000;
1295                         break;
1296                 case 2:
1297                         rrq->value = 2000000;
1298                         break;
1299                 case 5:
1300                         rrq->value = 5500000;
1301                         break;
1302                 case 11:
1303                         rrq->value = 11000000;
1304                         break;
1305                 default:
1306                         rrq->value = 0;
1307         }
1308         rrq->fixed = 0;
1309         rrq->disabled = 0;
1310
1311         return 0;
1312 }
1313
1314 static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1315     struct iw_param *rts, char *extra)
1316 {
1317         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1318         int err;
1319         short val = rts->value;
1320
1321         if (rts->disabled || !rts->fixed)
1322                 val = ZD1201_RTSMAX;
1323         if (val > ZD1201_RTSMAX)
1324                 return -EINVAL;
1325         if (val < 0)
1326                 return -EINVAL;
1327
1328         err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1329         if (err)
1330                 return err;
1331         return zd1201_mac_reset(zd);
1332 }
1333
1334 static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1335     struct iw_param *rts, char *extra)
1336 {
1337         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1338         short rtst;
1339         int err;
1340
1341         err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1342         if (err)
1343                 return err;
1344         rts->value = rtst;
1345         rts->disabled = (rts->value == ZD1201_RTSMAX);
1346         rts->fixed = 1;
1347
1348         return 0;
1349 }
1350
1351 static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1352     struct iw_param *frag, char *extra)
1353 {
1354         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1355         int err;
1356         short val = frag->value;
1357
1358         if (frag->disabled || !frag->fixed)
1359                 val = ZD1201_FRAGMAX;
1360         if (val > ZD1201_FRAGMAX)
1361                 return -EINVAL;
1362         if (val < ZD1201_FRAGMIN)
1363                 return -EINVAL;
1364         if (val & 1)
1365                 return -EINVAL;
1366         err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1367         if (err)
1368                 return err;
1369         return zd1201_mac_reset(zd);
1370 }
1371
1372 static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1373     struct iw_param *frag, char *extra)
1374 {
1375         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1376         short fragt;
1377         int err;
1378
1379         err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1380         if (err)
1381                 return err;
1382         frag->value = fragt;
1383         frag->disabled = (frag->value == ZD1201_FRAGMAX);
1384         frag->fixed = 1;
1385
1386         return 0;
1387 }
1388
1389 static int zd1201_set_retry(struct net_device *dev,
1390     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1391 {
1392         return 0;
1393 }
1394
1395 static int zd1201_get_retry(struct net_device *dev,
1396     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1397 {
1398         return 0;
1399 }
1400
1401 static int zd1201_set_encode(struct net_device *dev,
1402     struct iw_request_info *info, struct iw_point *erq, char *key)
1403 {
1404         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1405         short i;
1406         int err, rid;
1407
1408         if (erq->length > ZD1201_MAXKEYLEN)
1409                 return -EINVAL;
1410
1411         i = (erq->flags & IW_ENCODE_INDEX)-1;
1412         if (i == -1) {
1413                 err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1414                 if (err)
1415                         return err;
1416         } else {
1417                 err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1418                 if (err)
1419                         return err;
1420         }
1421
1422         if (i < 0 || i >= ZD1201_NUMKEYS)
1423                 return -EINVAL;
1424
1425         rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1426         err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1427         if (err)
1428                 return err;
1429         zd->encode_keylen[i] = erq->length;
1430         memcpy(zd->encode_keys[i], key, erq->length);
1431
1432         i=0;
1433         if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1434                 i |= 0x01;
1435                 zd->encode_enabled = 1;
1436         } else
1437                 zd->encode_enabled = 0;
1438         if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1439                 i |= 0x02;
1440                 zd->encode_restricted = 1;
1441         } else
1442                 zd->encode_restricted = 0;
1443         err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1444         if (err)
1445                 return err;
1446
1447         if (zd->encode_enabled)
1448                 i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1449         else
1450                 i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1451         err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1452         if (err)
1453                 return err;
1454
1455         return zd1201_mac_reset(zd);
1456 }
1457
1458 static int zd1201_get_encode(struct net_device *dev,
1459     struct iw_request_info *info, struct iw_point *erq, char *key)
1460 {
1461         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1462         short i;
1463         int err;
1464
1465         if (zd->encode_enabled)
1466                 erq->flags = IW_ENCODE_ENABLED;
1467         else
1468                 erq->flags = IW_ENCODE_DISABLED;
1469         if (zd->encode_restricted)
1470                 erq->flags |= IW_ENCODE_RESTRICTED;
1471         else
1472                 erq->flags |= IW_ENCODE_OPEN;
1473
1474         i = (erq->flags & IW_ENCODE_INDEX) -1;
1475         if (i == -1) {
1476                 err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1477                 if (err)
1478                         return err;
1479         }
1480         if (i<0 || i>= ZD1201_NUMKEYS)
1481                 return -EINVAL;
1482
1483         erq->flags |= i+1;
1484
1485         erq->length = zd->encode_keylen[i];
1486         memcpy(key, zd->encode_keys[i], erq->length);
1487
1488         return 0;
1489 }
1490
1491 static int zd1201_set_power(struct net_device *dev, 
1492     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1493 {
1494         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1495         short enabled, duration, level;
1496         int err;
1497
1498         enabled = vwrq->disabled ? 0 : 1;
1499         if (enabled) {
1500                 if (vwrq->flags & IW_POWER_PERIOD) {
1501                         duration = vwrq->value;
1502                         err = zd1201_setconfig16(zd, 
1503                             ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1504                         if (err)
1505                                 return err;
1506                         goto out;
1507                 }
1508                 if (vwrq->flags & IW_POWER_TIMEOUT) {
1509                         err = zd1201_getconfig16(zd, 
1510                             ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1511                         if (err)
1512                                 return err;
1513                         level = vwrq->value * 4 / duration;
1514                         if (level > 4)
1515                                 level = 4;
1516                         if (level < 0)
1517                                 level = 0;
1518                         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1519                             level);
1520                         if (err)
1521                                 return err;
1522                         goto out;
1523                 }
1524                 return -EINVAL;
1525         }
1526 out:
1527         return zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1528 }
1529
1530 static int zd1201_get_power(struct net_device *dev,
1531     struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1532 {
1533         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1534         short enabled, level, duration;
1535         int err;
1536
1537         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1538         if (err)
1539                 return err;
1540         err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1541         if (err)
1542                 return err;
1543         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1544         if (err)
1545                 return err;
1546         vwrq->disabled = enabled ? 0 : 1;
1547         if (vwrq->flags & IW_POWER_TYPE) {
1548                 if (vwrq->flags & IW_POWER_PERIOD) {
1549                         vwrq->value = duration;
1550                         vwrq->flags = IW_POWER_PERIOD;
1551                 } else {
1552                         vwrq->value = duration * level / 4;
1553                         vwrq->flags = IW_POWER_TIMEOUT;
1554                 }
1555         }
1556         if (vwrq->flags & IW_POWER_MODE) {
1557                 if (enabled && level)
1558                         vwrq->flags = IW_POWER_UNICAST_R;
1559                 else
1560                         vwrq->flags = IW_POWER_ALL_R;
1561         }
1562
1563         return 0;
1564 }
1565
1566
1567 static const iw_handler zd1201_iw_handler[] =
1568 {
1569         (iw_handler) zd1201_config_commit,      /* SIOCSIWCOMMIT */
1570         (iw_handler) zd1201_get_name,           /* SIOCGIWNAME */
1571         (iw_handler) NULL,                      /* SIOCSIWNWID */
1572         (iw_handler) NULL,                      /* SIOCGIWNWID */
1573         (iw_handler) zd1201_set_freq,           /* SIOCSIWFREQ */
1574         (iw_handler) zd1201_get_freq,           /* SIOCGIWFREQ */
1575         (iw_handler) zd1201_set_mode,           /* SIOCSIWMODE */
1576         (iw_handler) zd1201_get_mode,           /* SIOCGIWMODE */
1577         (iw_handler) NULL,                      /* SIOCSIWSENS */
1578         (iw_handler) NULL,                      /* SIOCGIWSENS */
1579         (iw_handler) NULL,                      /* SIOCSIWRANGE */
1580         (iw_handler) zd1201_get_range,           /* SIOCGIWRANGE */
1581         (iw_handler) NULL,                      /* SIOCSIWPRIV */
1582         (iw_handler) NULL,                      /* SIOCGIWPRIV */
1583         (iw_handler) NULL,                      /* SIOCSIWSTATS */
1584         (iw_handler) NULL,                      /* SIOCGIWSTATS */
1585         (iw_handler) NULL,                      /* SIOCSIWSPY */
1586         (iw_handler) NULL,                      /* SIOCGIWSPY */
1587         (iw_handler) NULL,                      /* -- hole -- */
1588         (iw_handler) NULL,                      /* -- hole -- */
1589         (iw_handler) NULL/*zd1201_set_wap*/,            /* SIOCSIWAP */
1590         (iw_handler) zd1201_get_wap,            /* SIOCGIWAP */
1591         (iw_handler) NULL,                      /* -- hole -- */
1592         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
1593         (iw_handler) zd1201_set_scan,           /* SIOCSIWSCAN */
1594         (iw_handler) zd1201_get_scan,           /* SIOCGIWSCAN */
1595         (iw_handler) zd1201_set_essid,          /* SIOCSIWESSID */
1596         (iw_handler) zd1201_get_essid,          /* SIOCGIWESSID */
1597         (iw_handler) NULL,                      /* SIOCSIWNICKN */
1598         (iw_handler) zd1201_get_nick,           /* SIOCGIWNICKN */
1599         (iw_handler) NULL,                      /* -- hole -- */
1600         (iw_handler) NULL,                      /* -- hole -- */
1601         (iw_handler) zd1201_set_rate,           /* SIOCSIWRATE */
1602         (iw_handler) zd1201_get_rate,           /* SIOCGIWRATE */
1603         (iw_handler) zd1201_set_rts,            /* SIOCSIWRTS */
1604         (iw_handler) zd1201_get_rts,            /* SIOCGIWRTS */
1605         (iw_handler) zd1201_set_frag,           /* SIOCSIWFRAG */
1606         (iw_handler) zd1201_get_frag,           /* SIOCGIWFRAG */
1607         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
1608         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
1609         (iw_handler) zd1201_set_retry,          /* SIOCSIWRETRY */
1610         (iw_handler) zd1201_get_retry,          /* SIOCGIWRETRY */
1611         (iw_handler) zd1201_set_encode,         /* SIOCSIWENCODE */
1612         (iw_handler) zd1201_get_encode,         /* SIOCGIWENCODE */
1613         (iw_handler) zd1201_set_power,          /* SIOCSIWPOWER */
1614         (iw_handler) zd1201_get_power,          /* SIOCGIWPOWER */
1615 };
1616
1617 static int zd1201_set_hostauth(struct net_device *dev,
1618     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1619 {
1620         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1621
1622         if (!zd->ap)
1623                 return -EOPNOTSUPP;
1624
1625         return zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1626 }
1627
1628 static int zd1201_get_hostauth(struct net_device *dev,
1629     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1630 {
1631         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1632         short hostauth;
1633         int err;
1634
1635         if (!zd->ap)
1636                 return -EOPNOTSUPP;
1637
1638         err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1639         if (err)
1640                 return err;
1641         rrq->value = hostauth;
1642         rrq->fixed = 1;
1643
1644         return 0;
1645 }
1646
1647 static int zd1201_auth_sta(struct net_device *dev,
1648     struct iw_request_info *info, struct sockaddr *sta, char *extra)
1649 {
1650         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1651         unsigned char buffer[10];
1652
1653         if (!zd->ap)
1654                 return -EOPNOTSUPP;
1655
1656         memcpy(buffer, sta->sa_data, ETH_ALEN);
1657         *(short*)(buffer+6) = 0;        /* 0==success, 1==failure */
1658         *(short*)(buffer+8) = 0;
1659
1660         return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1661 }
1662
1663 static int zd1201_set_maxassoc(struct net_device *dev,
1664     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1665 {
1666         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1667         int err;
1668
1669         if (!zd->ap)
1670                 return -EOPNOTSUPP;
1671
1672         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1673         if (err)
1674                 return err;
1675         return 0;
1676 }
1677
1678 static int zd1201_get_maxassoc(struct net_device *dev,
1679     struct iw_request_info *info, struct iw_param *rrq, char *extra)
1680 {
1681         struct zd1201 *zd = (struct zd1201 *)dev->priv;
1682         short maxassoc;
1683         int err;
1684
1685         if (!zd->ap)
1686                 return -EOPNOTSUPP;
1687
1688         err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1689         if (err)
1690                 return err;
1691         rrq->value = maxassoc;
1692         rrq->fixed = 1;
1693
1694         return 0;
1695 }
1696
1697 static const iw_handler zd1201_private_handler[] = {
1698         (iw_handler) zd1201_set_hostauth,       /* ZD1201SIWHOSTAUTH */
1699         (iw_handler) zd1201_get_hostauth,       /* ZD1201GIWHOSTAUTH */
1700         (iw_handler) zd1201_auth_sta,           /* ZD1201SIWAUTHSTA */
1701         (iw_handler) NULL,                      /* nothing to get */
1702         (iw_handler) zd1201_set_maxassoc,       /* ZD1201SIMAXASSOC */
1703         (iw_handler) zd1201_get_maxassoc,       /* ZD1201GIMAXASSOC */
1704 };
1705
1706 static const struct iw_priv_args zd1201_private_args[] = {
1707         { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1708             IW_PRIV_TYPE_NONE, "sethostauth" },
1709         { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1710             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1711         { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1712             IW_PRIV_TYPE_NONE, "authstation" },
1713         { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1714             IW_PRIV_TYPE_NONE, "setmaxassoc" },
1715         { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1716             IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1717 };
1718
1719 static const struct iw_handler_def zd1201_iw_handlers = {
1720         .num_standard           = ARRAY_SIZE(zd1201_iw_handler),
1721         .num_private            = ARRAY_SIZE(zd1201_private_handler),
1722         .num_private_args       = ARRAY_SIZE(zd1201_private_args),
1723         .standard               = (iw_handler *)zd1201_iw_handler,
1724         .private                = (iw_handler *)zd1201_private_handler,
1725         .private_args           = (struct iw_priv_args *) zd1201_private_args,
1726         .get_wireless_stats     = zd1201_get_wireless_stats,
1727 };
1728
1729 static int zd1201_probe(struct usb_interface *interface,
1730                         const struct usb_device_id *id)
1731 {
1732         struct zd1201 *zd;
1733         struct usb_device *usb;
1734         int err;
1735         short porttype;
1736         char buf[IW_ESSID_MAX_SIZE+2];
1737
1738         usb = interface_to_usbdev(interface);
1739
1740         zd = kzalloc(sizeof(struct zd1201), GFP_KERNEL);
1741         if (!zd)
1742                 return -ENOMEM;
1743         zd->ap = ap;
1744         zd->usb = usb;
1745         zd->removed = 0;
1746         init_waitqueue_head(&zd->rxdataq);
1747         INIT_HLIST_HEAD(&zd->fraglist);
1748         
1749         err = zd1201_fw_upload(usb, zd->ap);
1750         if (err) {
1751                 dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
1752                 goto err_zd;
1753         }
1754         
1755         zd->endp_in = 1;
1756         zd->endp_out = 1;
1757         zd->endp_out2 = 2;
1758         zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1759         zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1760         if (!zd->rx_urb || !zd->tx_urb)
1761                 goto err_zd;
1762
1763         mdelay(100);
1764         err = zd1201_drvr_start(zd);
1765         if (err)
1766                 goto err_zd;
1767
1768         err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
1769         if (err)
1770                 goto err_start;
1771
1772         err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
1773             ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
1774         if (err)
1775                 goto err_start;
1776
1777         zd->dev = alloc_etherdev(0);
1778         if (!zd->dev)
1779                 goto err_start;
1780
1781         zd->dev->priv = zd;
1782         zd->dev->open = zd1201_net_open;
1783         zd->dev->stop = zd1201_net_stop;
1784         zd->dev->get_stats = zd1201_get_stats;
1785         zd->dev->wireless_handlers =
1786             (struct iw_handler_def *)&zd1201_iw_handlers;
1787         zd->dev->hard_start_xmit = zd1201_hard_start_xmit;
1788         zd->dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
1789         zd->dev->tx_timeout = zd1201_tx_timeout;
1790         zd->dev->set_multicast_list = zd1201_set_multicast;
1791         zd->dev->set_mac_address = zd1201_set_mac_address;
1792         strcpy(zd->dev->name, "wlan%d");
1793
1794         err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR, 
1795             zd->dev->dev_addr, zd->dev->addr_len);
1796         if (err)
1797                 goto err_net;
1798
1799         /* Set wildcard essid to match zd->essid */
1800         *(__le16 *)buf = cpu_to_le16(0);
1801         err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
1802             IW_ESSID_MAX_SIZE+2, 1);
1803         if (err)
1804                 goto err_net;
1805
1806         if (zd->ap)
1807                 porttype = ZD1201_PORTTYPE_AP;
1808         else
1809                 porttype = ZD1201_PORTTYPE_BSS;
1810         err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1811         if (err)
1812                 goto err_net;
1813
1814         SET_NETDEV_DEV(zd->dev, &usb->dev);
1815
1816         err = register_netdev(zd->dev);
1817         if (err)
1818                 goto err_net;
1819         dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
1820             zd->dev->name);
1821
1822         usb_set_intfdata(interface, zd);
1823         zd1201_enable(zd);      /* zd1201 likes to startup enabled, */
1824         zd1201_disable(zd);     /* interfering with all the wifis in range */
1825         return 0;
1826
1827 err_net:
1828         free_netdev(zd->dev);
1829 err_start:
1830         /* Leave the device in reset state */
1831         zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
1832 err_zd:
1833         if (zd->tx_urb)
1834                 usb_free_urb(zd->tx_urb);
1835         if (zd->rx_urb)
1836                 usb_free_urb(zd->rx_urb);
1837         kfree(zd);
1838         return err;
1839 }
1840
1841 static void zd1201_disconnect(struct usb_interface *interface)
1842 {
1843         struct zd1201 *zd=(struct zd1201 *)usb_get_intfdata(interface);
1844         struct hlist_node *node, *node2;
1845         struct zd1201_frag *frag;
1846
1847         if (!zd)
1848                 return;
1849         usb_set_intfdata(interface, NULL);
1850         if (zd->dev) {
1851                 unregister_netdev(zd->dev);
1852                 free_netdev(zd->dev);
1853         }
1854
1855         hlist_for_each_entry_safe(frag, node, node2, &zd->fraglist, fnode) {
1856                 hlist_del_init(&frag->fnode);
1857                 kfree_skb(frag->skb);
1858                 kfree(frag);
1859         }
1860
1861         if (zd->tx_urb) {
1862                 usb_kill_urb(zd->tx_urb);
1863                 usb_free_urb(zd->tx_urb);
1864         }
1865         if (zd->rx_urb) {
1866                 usb_kill_urb(zd->rx_urb);
1867                 usb_free_urb(zd->rx_urb);
1868         }
1869         kfree(zd);
1870 }
1871
1872 #ifdef CONFIG_PM
1873
1874 static int zd1201_suspend(struct usb_interface *interface,
1875                            pm_message_t message)
1876 {
1877         struct zd1201 *zd = usb_get_intfdata(interface);
1878
1879         netif_device_detach(zd->dev);
1880
1881         zd->was_enabled = zd->mac_enabled;
1882
1883         if (zd->was_enabled)
1884                 return zd1201_disable(zd);
1885         else
1886                 return 0;
1887 }
1888
1889 static int zd1201_resume(struct usb_interface *interface)
1890 {
1891         struct zd1201 *zd = usb_get_intfdata(interface);
1892
1893         if (!zd || !zd->dev)
1894                 return -ENODEV;
1895
1896         netif_device_attach(zd->dev);
1897
1898         if (zd->was_enabled)
1899                 return zd1201_enable(zd);
1900         else
1901                 return 0;
1902 }
1903
1904 #else
1905
1906 #define zd1201_suspend NULL
1907 #define zd1201_resume  NULL
1908
1909 #endif
1910
1911 static struct usb_driver zd1201_usb = {
1912         .name = "zd1201",
1913         .probe = zd1201_probe,
1914         .disconnect = zd1201_disconnect,
1915         .id_table = zd1201_table,
1916         .suspend = zd1201_suspend,
1917         .resume = zd1201_resume,
1918 };
1919
1920 static int __init zd1201_init(void)
1921 {
1922         return usb_register(&zd1201_usb);
1923 }
1924
1925 static void __exit zd1201_cleanup(void)
1926 {
1927         usb_deregister(&zd1201_usb);
1928 }
1929
1930 module_init(zd1201_init);
1931 module_exit(zd1201_cleanup);