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Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszer...
[mirror_ubuntu-zesty-kernel.git] / drivers / net / wireless / zydas / 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);
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