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net: trans_start cleanups
[deliverable/linux.git] / drivers / net / wireless / zd1201.c
1 /*
2 * Driver for ZyDAS zd1201 based wireless USB devices.
3 *
4 * Copyright (c) 2004, 2005 Jeroen Vreeken (pe1rxq@amsat.org)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * version 2 as published by the Free Software Foundation.
9 *
10 * Parts of this driver have been derived from a wlan-ng version
11 * modified by ZyDAS. They also made documentation available, thanks!
12 * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
13 */
14
15 #include <linux/module.h>
16 #include <linux/usb.h>
17 #include <linux/slab.h>
18 #include <linux/netdevice.h>
19 #include <linux/etherdevice.h>
20 #include <linux/wireless.h>
21 #include <linux/ieee80211.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, 0x8005)}, /* GIGABYTE GN-WLBZ201 usb adapter */
34 {}
35 };
36
37 static int ap; /* Are we an AP or a normal station? */
38
39 #define ZD1201_VERSION "0.15"
40
41 MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>");
42 MODULE_DESCRIPTION("Driver for ZyDAS ZD1201 based USB Wireless adapters");
43 MODULE_VERSION(ZD1201_VERSION);
44 MODULE_LICENSE("GPL");
45 module_param(ap, int, 0);
46 MODULE_PARM_DESC(ap, "If non-zero Access Point firmware will be loaded");
47 MODULE_DEVICE_TABLE(usb, zd1201_table);
48
49
50 static int zd1201_fw_upload(struct usb_device *dev, int apfw)
51 {
52 const struct firmware *fw_entry;
53 const char *data;
54 unsigned long len;
55 int err;
56 unsigned char ret;
57 char *buf;
58 char *fwfile;
59
60 if (apfw)
61 fwfile = "zd1201-ap.fw";
62 else
63 fwfile = "zd1201.fw";
64
65 err = request_firmware(&fw_entry, fwfile, &dev->dev);
66 if (err) {
67 dev_err(&dev->dev, "Failed to load %s firmware file!\n", fwfile);
68 dev_err(&dev->dev, "Make sure the hotplug firmware loader is installed.\n");
69 dev_err(&dev->dev, "Goto http://linux-lc100020.sourceforge.net for more info.\n");
70 return err;
71 }
72
73 data = fw_entry->data;
74 len = fw_entry->size;
75
76 buf = kmalloc(1024, GFP_ATOMIC);
77 if (!buf)
78 goto exit;
79
80 while (len > 0) {
81 int translen = (len > 1024) ? 1024 : len;
82 memcpy(buf, data, translen);
83
84 err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0,
85 USB_DIR_OUT | 0x40, 0, 0, buf, translen,
86 ZD1201_FW_TIMEOUT);
87 if (err < 0)
88 goto exit;
89
90 len -= translen;
91 data += translen;
92 }
93
94 err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0x2,
95 USB_DIR_OUT | 0x40, 0, 0, NULL, 0, ZD1201_FW_TIMEOUT);
96 if (err < 0)
97 goto exit;
98
99 err = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 0x4,
100 USB_DIR_IN | 0x40, 0,0, &ret, sizeof(ret), ZD1201_FW_TIMEOUT);
101 if (err < 0)
102 goto exit;
103
104 if (ret & 0x80) {
105 err = -EIO;
106 goto exit;
107 }
108
109 err = 0;
110 exit:
111 kfree(buf);
112 release_firmware(fw_entry);
113 return err;
114 }
115
116 MODULE_FIRMWARE("zd1201-ap.fw");
117 MODULE_FIRMWARE("zd1201.fw");
118
119 static void zd1201_usbfree(struct urb *urb)
120 {
121 struct zd1201 *zd = urb->context;
122
123 switch(urb->status) {
124 case -EILSEQ:
125 case -ENODEV:
126 case -ETIME:
127 case -ENOENT:
128 case -EPIPE:
129 case -EOVERFLOW:
130 case -ESHUTDOWN:
131 dev_warn(&zd->usb->dev, "%s: urb failed: %d\n",
132 zd->dev->name, urb->status);
133 }
134
135 kfree(urb->transfer_buffer);
136 usb_free_urb(urb);
137 return;
138 }
139
140 /* cmdreq message:
141 u32 type
142 u16 cmd
143 u16 parm0
144 u16 parm1
145 u16 parm2
146 u8 pad[4]
147
148 total: 4 + 2 + 2 + 2 + 2 + 4 = 16
149 */
150 static int zd1201_docmd(struct zd1201 *zd, int cmd, int parm0,
151 int parm1, int parm2)
152 {
153 unsigned char *command;
154 int ret;
155 struct urb *urb;
156
157 command = kmalloc(16, GFP_ATOMIC);
158 if (!command)
159 return -ENOMEM;
160
161 *((__le32*)command) = cpu_to_le32(ZD1201_USB_CMDREQ);
162 *((__le16*)&command[4]) = cpu_to_le16(cmd);
163 *((__le16*)&command[6]) = cpu_to_le16(parm0);
164 *((__le16*)&command[8]) = cpu_to_le16(parm1);
165 *((__le16*)&command[10])= cpu_to_le16(parm2);
166
167 urb = usb_alloc_urb(0, GFP_ATOMIC);
168 if (!urb) {
169 kfree(command);
170 return -ENOMEM;
171 }
172 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
173 command, 16, zd1201_usbfree, zd);
174 ret = usb_submit_urb(urb, GFP_ATOMIC);
175 if (ret) {
176 kfree(command);
177 usb_free_urb(urb);
178 }
179
180 return ret;
181 }
182
183 /* Callback after sending out a packet */
184 static void zd1201_usbtx(struct urb *urb)
185 {
186 struct zd1201 *zd = urb->context;
187 netif_wake_queue(zd->dev);
188 return;
189 }
190
191 /* Incoming data */
192 static void zd1201_usbrx(struct urb *urb)
193 {
194 struct zd1201 *zd = urb->context;
195 int free = 0;
196 unsigned char *data = urb->transfer_buffer;
197 struct sk_buff *skb;
198 unsigned char type;
199
200 if (!zd)
201 return;
202
203 switch(urb->status) {
204 case -EILSEQ:
205 case -ENODEV:
206 case -ETIME:
207 case -ENOENT:
208 case -EPIPE:
209 case -EOVERFLOW:
210 case -ESHUTDOWN:
211 dev_warn(&zd->usb->dev, "%s: rx urb failed: %d\n",
212 zd->dev->name, urb->status);
213 free = 1;
214 goto exit;
215 }
216
217 if (urb->status != 0 || urb->actual_length == 0)
218 goto resubmit;
219
220 type = data[0];
221 if (type == ZD1201_PACKET_EVENTSTAT || type == ZD1201_PACKET_RESOURCE) {
222 memcpy(zd->rxdata, data, urb->actual_length);
223 zd->rxlen = urb->actual_length;
224 zd->rxdatas = 1;
225 wake_up(&zd->rxdataq);
226 }
227 /* Info frame */
228 if (type == ZD1201_PACKET_INQUIRE) {
229 int i = 0;
230 unsigned short infotype, framelen, copylen;
231 framelen = le16_to_cpu(*(__le16*)&data[4]);
232 infotype = le16_to_cpu(*(__le16*)&data[6]);
233
234 if (infotype == ZD1201_INF_LINKSTATUS) {
235 short linkstatus;
236
237 linkstatus = le16_to_cpu(*(__le16*)&data[8]);
238 switch(linkstatus) {
239 case 1:
240 netif_carrier_on(zd->dev);
241 break;
242 case 2:
243 netif_carrier_off(zd->dev);
244 break;
245 case 3:
246 netif_carrier_off(zd->dev);
247 break;
248 case 4:
249 netif_carrier_on(zd->dev);
250 break;
251 default:
252 netif_carrier_off(zd->dev);
253 }
254 goto resubmit;
255 }
256 if (infotype == ZD1201_INF_ASSOCSTATUS) {
257 short status = le16_to_cpu(*(__le16*)(data+8));
258 int event;
259 union iwreq_data wrqu;
260
261 switch (status) {
262 case ZD1201_ASSOCSTATUS_STAASSOC:
263 case ZD1201_ASSOCSTATUS_REASSOC:
264 event = IWEVREGISTERED;
265 break;
266 case ZD1201_ASSOCSTATUS_DISASSOC:
267 case ZD1201_ASSOCSTATUS_ASSOCFAIL:
268 case ZD1201_ASSOCSTATUS_AUTHFAIL:
269 default:
270 event = IWEVEXPIRED;
271 }
272 memcpy(wrqu.addr.sa_data, data+10, ETH_ALEN);
273 wrqu.addr.sa_family = ARPHRD_ETHER;
274
275 /* Send event to user space */
276 wireless_send_event(zd->dev, event, &wrqu, NULL);
277
278 goto resubmit;
279 }
280 if (infotype == ZD1201_INF_AUTHREQ) {
281 union iwreq_data wrqu;
282
283 memcpy(wrqu.addr.sa_data, data+8, ETH_ALEN);
284 wrqu.addr.sa_family = ARPHRD_ETHER;
285 /* There isn't a event that trully fits this request.
286 We assume that userspace will be smart enough to
287 see a new station being expired and sends back a
288 authstation ioctl to authorize it. */
289 wireless_send_event(zd->dev, IWEVEXPIRED, &wrqu, NULL);
290 goto resubmit;
291 }
292 /* Other infotypes are handled outside this handler */
293 zd->rxlen = 0;
294 while (i < urb->actual_length) {
295 copylen = le16_to_cpu(*(__le16*)&data[i+2]);
296 /* Sanity check, sometimes we get junk */
297 if (copylen+zd->rxlen > sizeof(zd->rxdata))
298 break;
299 memcpy(zd->rxdata+zd->rxlen, data+i+4, copylen);
300 zd->rxlen += copylen;
301 i += 64;
302 }
303 if (i >= urb->actual_length) {
304 zd->rxdatas = 1;
305 wake_up(&zd->rxdataq);
306 }
307 goto resubmit;
308 }
309 /* Actual data */
310 if (data[urb->actual_length-1] == ZD1201_PACKET_RXDATA) {
311 int datalen = urb->actual_length-1;
312 unsigned short len, fc, seq;
313 struct hlist_node *node;
314
315 len = ntohs(*(__be16 *)&data[datalen-2]);
316 if (len>datalen)
317 len=datalen;
318 fc = le16_to_cpu(*(__le16 *)&data[datalen-16]);
319 seq = le16_to_cpu(*(__le16 *)&data[datalen-24]);
320
321 if (zd->monitor) {
322 if (datalen < 24)
323 goto resubmit;
324 if (!(skb = dev_alloc_skb(datalen+24)))
325 goto resubmit;
326
327 memcpy(skb_put(skb, 2), &data[datalen-16], 2);
328 memcpy(skb_put(skb, 2), &data[datalen-2], 2);
329 memcpy(skb_put(skb, 6), &data[datalen-14], 6);
330 memcpy(skb_put(skb, 6), &data[datalen-22], 6);
331 memcpy(skb_put(skb, 6), &data[datalen-8], 6);
332 memcpy(skb_put(skb, 2), &data[datalen-24], 2);
333 memcpy(skb_put(skb, len), data, len);
334 skb->protocol = eth_type_trans(skb, zd->dev);
335 zd->dev->stats.rx_packets++;
336 zd->dev->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_MAX_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->protocol = eth_type_trans(skb, zd->dev);
391 zd->dev->stats.rx_packets++;
392 zd->dev->stats.rx_bytes += skb->len;
393 netif_rx(skb);
394 }
395 resubmit:
396 memset(data, 0, ZD1201_RXSIZE);
397
398 urb->status = 0;
399 urb->dev = zd->usb;
400 if(usb_submit_urb(urb, GFP_ATOMIC))
401 free = 1;
402
403 exit:
404 if (free) {
405 zd->rxlen = 0;
406 zd->rxdatas = 1;
407 wake_up(&zd->rxdataq);
408 kfree(urb->transfer_buffer);
409 }
410 return;
411 }
412
413 static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
414 unsigned int riddatalen)
415 {
416 int err;
417 int i = 0;
418 int code;
419 int rid_fid;
420 int length;
421 unsigned char *pdata;
422
423 zd->rxdatas = 0;
424 err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
425 if (err)
426 return err;
427
428 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
429 if (!zd->rxlen)
430 return -EIO;
431
432 code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
433 rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
434 length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
435 if (length > zd->rxlen)
436 length = zd->rxlen-6;
437
438 /* If access bit is not on, then error */
439 if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
440 return -EINVAL;
441
442 /* Not enough buffer for allocating data */
443 if (riddatalen != (length - 4)) {
444 dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
445 riddatalen, zd->rxlen, length, rid, rid_fid);
446 return -ENODATA;
447 }
448
449 zd->rxdatas = 0;
450 /* Issue SetRxRid commnd */
451 err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
452 if (err)
453 return err;
454
455 /* Receive RID record from resource packets */
456 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
457 if (!zd->rxlen)
458 return -EIO;
459
460 if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
461 dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
462 zd->rxdata[zd->rxlen-1]);
463 return -EINVAL;
464 }
465
466 /* Set the data pointer and received data length */
467 pdata = zd->rxdata;
468 length = zd->rxlen;
469
470 do {
471 int actual_length;
472
473 actual_length = (length > 64) ? 64 : length;
474
475 if (pdata[0] != 0x3) {
476 dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
477 pdata[0]);
478 return -EINVAL;
479 }
480
481 if (actual_length != 64) {
482 /* Trim the last packet type byte */
483 actual_length--;
484 }
485
486 /* Skip the 4 bytes header (RID length and RID) */
487 if (i == 0) {
488 pdata += 8;
489 actual_length -= 8;
490 } else {
491 pdata += 4;
492 actual_length -= 4;
493 }
494
495 memcpy(riddata, pdata, actual_length);
496 riddata += actual_length;
497 pdata += actual_length;
498 length -= 64;
499 i++;
500 } while (length > 0);
501
502 return 0;
503 }
504
505 /*
506 * resreq:
507 * byte type
508 * byte sequence
509 * u16 reserved
510 * byte data[12]
511 * total: 16
512 */
513 static int zd1201_setconfig(struct zd1201 *zd, int rid, void *buf, int len, int wait)
514 {
515 int err;
516 unsigned char *request;
517 int reqlen;
518 char seq=0;
519 struct urb *urb;
520 gfp_t gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
521
522 len += 4; /* first 4 are for header */
523
524 zd->rxdatas = 0;
525 zd->rxlen = 0;
526 for (seq=0; len > 0; seq++) {
527 request = kmalloc(16, gfp_mask);
528 if (!request)
529 return -ENOMEM;
530 urb = usb_alloc_urb(0, gfp_mask);
531 if (!urb) {
532 kfree(request);
533 return -ENOMEM;
534 }
535 memset(request, 0, 16);
536 reqlen = len>12 ? 12 : len;
537 request[0] = ZD1201_USB_RESREQ;
538 request[1] = seq;
539 request[2] = 0;
540 request[3] = 0;
541 if (request[1] == 0) {
542 /* add header */
543 *(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
544 *(__le16*)&request[6] = cpu_to_le16(rid);
545 memcpy(request+8, buf, reqlen-4);
546 buf += reqlen-4;
547 } else {
548 memcpy(request+4, buf, reqlen);
549 buf += reqlen;
550 }
551
552 len -= reqlen;
553
554 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
555 zd->endp_out2), request, 16, zd1201_usbfree, zd);
556 err = usb_submit_urb(urb, gfp_mask);
557 if (err)
558 goto err;
559 }
560
561 request = kmalloc(16, gfp_mask);
562 if (!request)
563 return -ENOMEM;
564 urb = usb_alloc_urb(0, gfp_mask);
565 if (!urb) {
566 kfree(request);
567 return -ENOMEM;
568 }
569 *((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
570 *((__le16*)&request[4]) =
571 cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
572 *((__le16*)&request[6]) = cpu_to_le16(rid);
573 *((__le16*)&request[8]) = cpu_to_le16(0);
574 *((__le16*)&request[10]) = cpu_to_le16(0);
575 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
576 request, 16, zd1201_usbfree, zd);
577 err = usb_submit_urb(urb, gfp_mask);
578 if (err)
579 goto err;
580
581 if (wait) {
582 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
583 if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
584 dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
585 }
586 }
587
588 return 0;
589 err:
590 kfree(request);
591 usb_free_urb(urb);
592 return err;
593 }
594
595 static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
596 {
597 int err;
598 __le16 zdval;
599
600 err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
601 if (err)
602 return err;
603 *val = le16_to_cpu(zdval);
604 return 0;
605 }
606
607 static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
608 {
609 __le16 zdval = cpu_to_le16(val);
610 return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
611 }
612
613 static int zd1201_drvr_start(struct zd1201 *zd)
614 {
615 int err, i;
616 short max;
617 __le16 zdmax;
618 unsigned char *buffer;
619
620 buffer = kzalloc(ZD1201_RXSIZE, GFP_KERNEL);
621 if (!buffer)
622 return -ENOMEM;
623
624 usb_fill_bulk_urb(zd->rx_urb, zd->usb,
625 usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
626 zd1201_usbrx, zd);
627
628 err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
629 if (err)
630 goto err_buffer;
631
632 err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
633 if (err)
634 goto err_urb;
635
636 err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
637 sizeof(__le16));
638 if (err)
639 goto err_urb;
640
641 max = le16_to_cpu(zdmax);
642 for (i=0; i<max; i++) {
643 err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
644 if (err)
645 goto err_urb;
646 }
647
648 return 0;
649
650 err_urb:
651 usb_kill_urb(zd->rx_urb);
652 return err;
653 err_buffer:
654 kfree(buffer);
655 return err;
656 }
657
658 /* Magic alert: The firmware doesn't seem to like the MAC state being
659 * toggled in promisc (aka monitor) mode.
660 * (It works a number of times, but will halt eventually)
661 * So we turn it of before disabling and on after enabling if needed.
662 */
663 static int zd1201_enable(struct zd1201 *zd)
664 {
665 int err;
666
667 if (zd->mac_enabled)
668 return 0;
669
670 err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
671 if (!err)
672 zd->mac_enabled = 1;
673
674 if (zd->monitor)
675 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
676
677 return err;
678 }
679
680 static int zd1201_disable(struct zd1201 *zd)
681 {
682 int err;
683
684 if (!zd->mac_enabled)
685 return 0;
686 if (zd->monitor) {
687 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
688 if (err)
689 return err;
690 }
691
692 err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
693 if (!err)
694 zd->mac_enabled = 0;
695 return err;
696 }
697
698 static int zd1201_mac_reset(struct zd1201 *zd)
699 {
700 if (!zd->mac_enabled)
701 return 0;
702 zd1201_disable(zd);
703 return zd1201_enable(zd);
704 }
705
706 static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
707 {
708 int err, val;
709 char buf[IW_ESSID_MAX_SIZE+2];
710
711 err = zd1201_disable(zd);
712 if (err)
713 return err;
714
715 val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
716 val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
717 err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
718 if (err)
719 return err;
720
721 *(__le16 *)buf = cpu_to_le16(essidlen);
722 memcpy(buf+2, essid, essidlen);
723 if (!zd->ap) { /* Normal station */
724 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
725 IW_ESSID_MAX_SIZE+2, 1);
726 if (err)
727 return err;
728 } else { /* AP */
729 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
730 IW_ESSID_MAX_SIZE+2, 1);
731 if (err)
732 return err;
733 }
734
735 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
736 zd->dev->dev_addr, zd->dev->addr_len, 1);
737 if (err)
738 return err;
739
740 err = zd1201_enable(zd);
741 if (err)
742 return err;
743
744 msleep(100);
745 return 0;
746 }
747
748 static int zd1201_net_open(struct net_device *dev)
749 {
750 struct zd1201 *zd = netdev_priv(dev);
751
752 /* Start MAC with wildcard if no essid set */
753 if (!zd->mac_enabled)
754 zd1201_join(zd, zd->essid, zd->essidlen);
755 netif_start_queue(dev);
756
757 return 0;
758 }
759
760 static int zd1201_net_stop(struct net_device *dev)
761 {
762 netif_stop_queue(dev);
763 return 0;
764 }
765
766 /*
767 RFC 1042 encapsulates Ethernet frames in 802.11 frames
768 by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
769 (0x00, 0x00, 0x00). Zd requires an additional padding, copy
770 of ethernet addresses, length of the standard RFC 1042 packet
771 and a command byte (which is nul for tx).
772
773 tx frame (from Wlan NG):
774 RFC 1042:
775 llc 0xAA 0xAA 0x03 (802.2 LLC)
776 snap 0x00 0x00 0x00 (Ethernet encapsulated)
777 type 2 bytes, Ethernet type field
778 payload (minus eth header)
779 Zydas specific:
780 padding 1B if (skb->len+8+1)%64==0
781 Eth MAC addr 12 bytes, Ethernet MAC addresses
782 length 2 bytes, RFC 1042 packet length
783 (llc+snap+type+payload)
784 zd 1 null byte, zd1201 packet type
785 */
786 static netdev_tx_t zd1201_hard_start_xmit(struct sk_buff *skb,
787 struct net_device *dev)
788 {
789 struct zd1201 *zd = netdev_priv(dev);
790 unsigned char *txbuf = zd->txdata;
791 int txbuflen, pad = 0, err;
792 struct urb *urb = zd->tx_urb;
793
794 if (!zd->mac_enabled || zd->monitor) {
795 dev->stats.tx_dropped++;
796 kfree_skb(skb);
797 return NETDEV_TX_OK;
798 }
799 netif_stop_queue(dev);
800
801 txbuflen = skb->len + 8 + 1;
802 if (txbuflen%64 == 0) {
803 pad = 1;
804 txbuflen++;
805 }
806 txbuf[0] = 0xAA;
807 txbuf[1] = 0xAA;
808 txbuf[2] = 0x03;
809 txbuf[3] = 0x00; /* rfc1042 */
810 txbuf[4] = 0x00;
811 txbuf[5] = 0x00;
812
813 skb_copy_from_linear_data_offset(skb, 12, txbuf + 6, skb->len - 12);
814 if (pad)
815 txbuf[skb->len-12+6]=0;
816 skb_copy_from_linear_data(skb, txbuf + skb->len - 12 + 6 + pad, 12);
817 *(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
818 txbuf[txbuflen-1] = 0;
819
820 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
821 txbuf, txbuflen, zd1201_usbtx, zd);
822
823 err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
824 if (err) {
825 dev->stats.tx_errors++;
826 netif_start_queue(dev);
827 } else {
828 dev->stats.tx_packets++;
829 dev->stats.tx_bytes += skb->len;
830 }
831 kfree_skb(skb);
832
833 return NETDEV_TX_OK;
834 }
835
836 static void zd1201_tx_timeout(struct net_device *dev)
837 {
838 struct zd1201 *zd = netdev_priv(dev);
839
840 if (!zd)
841 return;
842 dev_warn(&zd->usb->dev, "%s: TX timeout, shooting down urb\n",
843 dev->name);
844 usb_unlink_urb(zd->tx_urb);
845 dev->stats.tx_errors++;
846 /* Restart the timeout to quiet the watchdog: */
847 dev->trans_start = jiffies; /* prevent tx timeout */
848 }
849
850 static int zd1201_set_mac_address(struct net_device *dev, void *p)
851 {
852 struct sockaddr *addr = p;
853 struct zd1201 *zd = netdev_priv(dev);
854 int err;
855
856 if (!zd)
857 return -ENODEV;
858
859 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
860 addr->sa_data, dev->addr_len, 1);
861 if (err)
862 return err;
863 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
864
865 return zd1201_mac_reset(zd);
866 }
867
868 static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
869 {
870 struct zd1201 *zd = netdev_priv(dev);
871
872 return &zd->iwstats;
873 }
874
875 static void zd1201_set_multicast(struct net_device *dev)
876 {
877 struct zd1201 *zd = netdev_priv(dev);
878 struct netdev_hw_addr *ha;
879 unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
880 int i;
881
882 if (netdev_mc_count(dev) > ZD1201_MAXMULTI)
883 return;
884
885 i = 0;
886 netdev_for_each_mc_addr(ha, dev)
887 memcpy(reqbuf + i++ * ETH_ALEN, ha->addr, ETH_ALEN);
888 zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
889 netdev_mc_count(dev) * ETH_ALEN, 0);
890 }
891
892 static int zd1201_config_commit(struct net_device *dev,
893 struct iw_request_info *info, struct iw_point *data, char *essid)
894 {
895 struct zd1201 *zd = netdev_priv(dev);
896
897 return zd1201_mac_reset(zd);
898 }
899
900 static int zd1201_get_name(struct net_device *dev,
901 struct iw_request_info *info, char *name, char *extra)
902 {
903 strcpy(name, "IEEE 802.11b");
904 return 0;
905 }
906
907 static int zd1201_set_freq(struct net_device *dev,
908 struct iw_request_info *info, struct iw_freq *freq, char *extra)
909 {
910 struct zd1201 *zd = netdev_priv(dev);
911 short channel = 0;
912 int err;
913
914 if (freq->e == 0)
915 channel = freq->m;
916 else {
917 channel = ieee80211_freq_to_dsss_chan(freq->m);
918 if (channel < 0)
919 channel = 0;
920 }
921
922 err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
923 if (err)
924 return err;
925
926 zd1201_mac_reset(zd);
927
928 return 0;
929 }
930
931 static int zd1201_get_freq(struct net_device *dev,
932 struct iw_request_info *info, struct iw_freq *freq, char *extra)
933 {
934 struct zd1201 *zd = netdev_priv(dev);
935 short channel;
936 int err;
937
938 err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
939 if (err)
940 return err;
941 freq->e = 0;
942 freq->m = channel;
943
944 return 0;
945 }
946
947 static int zd1201_set_mode(struct net_device *dev,
948 struct iw_request_info *info, __u32 *mode, char *extra)
949 {
950 struct zd1201 *zd = netdev_priv(dev);
951 short porttype, monitor = 0;
952 unsigned char buffer[IW_ESSID_MAX_SIZE+2];
953 int err;
954
955 if (zd->ap) {
956 if (*mode != IW_MODE_MASTER)
957 return -EINVAL;
958 return 0;
959 }
960
961 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
962 if (err)
963 return err;
964 zd->dev->type = ARPHRD_ETHER;
965 switch(*mode) {
966 case IW_MODE_MONITOR:
967 monitor = 1;
968 zd->dev->type = ARPHRD_IEEE80211;
969 /* Make sure we are no longer associated with by
970 setting an 'impossible' essid.
971 (otherwise we mess up firmware)
972 */
973 zd1201_join(zd, "\0-*#\0", 5);
974 /* Put port in pIBSS */
975 case 8: /* No pseudo-IBSS in wireless extensions (yet) */
976 porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
977 break;
978 case IW_MODE_ADHOC:
979 porttype = ZD1201_PORTTYPE_IBSS;
980 break;
981 case IW_MODE_INFRA:
982 porttype = ZD1201_PORTTYPE_BSS;
983 break;
984 default:
985 return -EINVAL;
986 }
987
988 err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
989 if (err)
990 return err;
991 if (zd->monitor && !monitor) {
992 zd1201_disable(zd);
993 *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
994 memcpy(buffer+2, zd->essid, zd->essidlen);
995 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
996 buffer, IW_ESSID_MAX_SIZE+2, 1);
997 if (err)
998 return err;
999 }
1000 zd->monitor = monitor;
1001 /* If monitor mode is set we don't actually turn it on here since it
1002 * is done during mac reset anyway (see zd1201_mac_enable).
1003 */
1004 zd1201_mac_reset(zd);
1005
1006 return 0;
1007 }
1008
1009 static int zd1201_get_mode(struct net_device *dev,
1010 struct iw_request_info *info, __u32 *mode, char *extra)
1011 {
1012 struct zd1201 *zd = netdev_priv(dev);
1013 short porttype;
1014 int err;
1015
1016 err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1017 if (err)
1018 return err;
1019 switch(porttype) {
1020 case ZD1201_PORTTYPE_IBSS:
1021 *mode = IW_MODE_ADHOC;
1022 break;
1023 case ZD1201_PORTTYPE_BSS:
1024 *mode = IW_MODE_INFRA;
1025 break;
1026 case ZD1201_PORTTYPE_WDS:
1027 *mode = IW_MODE_REPEAT;
1028 break;
1029 case ZD1201_PORTTYPE_PSEUDOIBSS:
1030 *mode = 8;/* No Pseudo-IBSS... */
1031 break;
1032 case ZD1201_PORTTYPE_AP:
1033 *mode = IW_MODE_MASTER;
1034 break;
1035 default:
1036 dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1037 porttype);
1038 *mode = IW_MODE_AUTO;
1039 }
1040 if (zd->monitor)
1041 *mode = IW_MODE_MONITOR;
1042
1043 return 0;
1044 }
1045
1046 static int zd1201_get_range(struct net_device *dev,
1047 struct iw_request_info *info, struct iw_point *wrq, char *extra)
1048 {
1049 struct iw_range *range = (struct iw_range *)extra;
1050
1051 wrq->length = sizeof(struct iw_range);
1052 memset(range, 0, sizeof(struct iw_range));
1053 range->we_version_compiled = WIRELESS_EXT;
1054 range->we_version_source = WIRELESS_EXT;
1055
1056 range->max_qual.qual = 128;
1057 range->max_qual.level = 128;
1058 range->max_qual.noise = 128;
1059 range->max_qual.updated = 7;
1060
1061 range->encoding_size[0] = 5;
1062 range->encoding_size[1] = 13;
1063 range->num_encoding_sizes = 2;
1064 range->max_encoding_tokens = ZD1201_NUMKEYS;
1065
1066 range->num_bitrates = 4;
1067 range->bitrate[0] = 1000000;
1068 range->bitrate[1] = 2000000;
1069 range->bitrate[2] = 5500000;
1070 range->bitrate[3] = 11000000;
1071
1072 range->min_rts = 0;
1073 range->min_frag = ZD1201_FRAGMIN;
1074 range->max_rts = ZD1201_RTSMAX;
1075 range->min_frag = ZD1201_FRAGMAX;
1076
1077 return 0;
1078 }
1079
1080 /* Little bit of magic here: we only get the quality if we poll
1081 * for it, and we never get an actual request to trigger such
1082 * a poll. Therefore we 'assume' that the user will soon ask for
1083 * the stats after asking the bssid.
1084 */
1085 static int zd1201_get_wap(struct net_device *dev,
1086 struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1087 {
1088 struct zd1201 *zd = netdev_priv(dev);
1089 unsigned char buffer[6];
1090
1091 if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1092 /* Unfortunately the quality and noise reported is useless.
1093 they seem to be accumulators that increase until you
1094 read them, unless we poll on a fixed interval we can't
1095 use them
1096 */
1097 /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1098 zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1099 /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1100 zd->iwstats.qual.updated = 2;
1101 }
1102
1103 return zd1201_getconfig(zd, ZD1201_RID_CURRENTBSSID, ap_addr->sa_data, 6);
1104 }
1105
1106 static int zd1201_set_scan(struct net_device *dev,
1107 struct iw_request_info *info, struct iw_point *srq, char *extra)
1108 {
1109 /* We do everything in get_scan */
1110 return 0;
1111 }
1112
1113 static int zd1201_get_scan(struct net_device *dev,
1114 struct iw_request_info *info, struct iw_point *srq, char *extra)
1115 {
1116 struct zd1201 *zd = netdev_priv(dev);
1117 int err, i, j, enabled_save;
1118 struct iw_event iwe;
1119 char *cev = extra;
1120 char *end_buf = extra + IW_SCAN_MAX_DATA;
1121
1122 /* No scanning in AP mode */
1123 if (zd->ap)
1124 return -EOPNOTSUPP;
1125
1126 /* Scan doesn't seem to work if disabled */
1127 enabled_save = zd->mac_enabled;
1128 zd1201_enable(zd);
1129
1130 zd->rxdatas = 0;
1131 err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE,
1132 ZD1201_INQ_SCANRESULTS, 0, 0);
1133 if (err)
1134 return err;
1135
1136 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1137 if (!zd->rxlen)
1138 return -EIO;
1139
1140 if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1141 return -EIO;
1142
1143 for(i=8; i<zd->rxlen; i+=62) {
1144 iwe.cmd = SIOCGIWAP;
1145 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1146 memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1147 cev = iwe_stream_add_event(info, cev, end_buf,
1148 &iwe, IW_EV_ADDR_LEN);
1149
1150 iwe.cmd = SIOCGIWESSID;
1151 iwe.u.data.length = zd->rxdata[i+16];
1152 iwe.u.data.flags = 1;
1153 cev = iwe_stream_add_point(info, cev, end_buf,
1154 &iwe, zd->rxdata+i+18);
1155
1156 iwe.cmd = SIOCGIWMODE;
1157 if (zd->rxdata[i+14]&0x01)
1158 iwe.u.mode = IW_MODE_MASTER;
1159 else
1160 iwe.u.mode = IW_MODE_ADHOC;
1161 cev = iwe_stream_add_event(info, cev, end_buf,
1162 &iwe, IW_EV_UINT_LEN);
1163
1164 iwe.cmd = SIOCGIWFREQ;
1165 iwe.u.freq.m = zd->rxdata[i+0];
1166 iwe.u.freq.e = 0;
1167 cev = iwe_stream_add_event(info, cev, end_buf,
1168 &iwe, IW_EV_FREQ_LEN);
1169
1170 iwe.cmd = SIOCGIWRATE;
1171 iwe.u.bitrate.fixed = 0;
1172 iwe.u.bitrate.disabled = 0;
1173 for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
1174 iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
1175 cev = iwe_stream_add_event(info, cev, end_buf,
1176 &iwe, IW_EV_PARAM_LEN);
1177 }
1178
1179 iwe.cmd = SIOCGIWENCODE;
1180 iwe.u.data.length = 0;
1181 if (zd->rxdata[i+14]&0x10)
1182 iwe.u.data.flags = IW_ENCODE_ENABLED;
1183 else
1184 iwe.u.data.flags = IW_ENCODE_DISABLED;
1185 cev = iwe_stream_add_point(info, cev, end_buf, &iwe, NULL);
1186
1187 iwe.cmd = IWEVQUAL;
1188 iwe.u.qual.qual = zd->rxdata[i+4];
1189 iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
1190 iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
1191 iwe.u.qual.updated = 7;
1192 cev = iwe_stream_add_event(info, cev, end_buf,
1193 &iwe, IW_EV_QUAL_LEN);
1194 }
1195
1196 if (!enabled_save)
1197 zd1201_disable(zd);
1198
1199 srq->length = cev - extra;
1200 srq->flags = 0;
1201
1202 return 0;
1203 }
1204
1205 static int zd1201_set_essid(struct net_device *dev,
1206 struct iw_request_info *info, struct iw_point *data, char *essid)
1207 {
1208 struct zd1201 *zd = netdev_priv(dev);
1209
1210 if (data->length > IW_ESSID_MAX_SIZE)
1211 return -EINVAL;
1212 if (data->length < 1)
1213 data->length = 1;
1214 zd->essidlen = data->length;
1215 memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1216 memcpy(zd->essid, essid, data->length);
1217 return zd1201_join(zd, zd->essid, zd->essidlen);
1218 }
1219
1220 static int zd1201_get_essid(struct net_device *dev,
1221 struct iw_request_info *info, struct iw_point *data, char *essid)
1222 {
1223 struct zd1201 *zd = netdev_priv(dev);
1224
1225 memcpy(essid, zd->essid, zd->essidlen);
1226 data->flags = 1;
1227 data->length = zd->essidlen;
1228
1229 return 0;
1230 }
1231
1232 static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1233 struct iw_point *data, char *nick)
1234 {
1235 strcpy(nick, "zd1201");
1236 data->flags = 1;
1237 data->length = strlen(nick);
1238 return 0;
1239 }
1240
1241 static int zd1201_set_rate(struct net_device *dev,
1242 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1243 {
1244 struct zd1201 *zd = netdev_priv(dev);
1245 short rate;
1246 int err;
1247
1248 switch (rrq->value) {
1249 case 1000000:
1250 rate = ZD1201_RATEB1;
1251 break;
1252 case 2000000:
1253 rate = ZD1201_RATEB2;
1254 break;
1255 case 5500000:
1256 rate = ZD1201_RATEB5;
1257 break;
1258 case 11000000:
1259 default:
1260 rate = ZD1201_RATEB11;
1261 break;
1262 }
1263 if (!rrq->fixed) { /* Also enable all lower bitrates */
1264 rate |= rate-1;
1265 }
1266
1267 err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1268 if (err)
1269 return err;
1270
1271 return zd1201_mac_reset(zd);
1272 }
1273
1274 static int zd1201_get_rate(struct net_device *dev,
1275 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1276 {
1277 struct zd1201 *zd = netdev_priv(dev);
1278 short rate;
1279 int err;
1280
1281 err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1282 if (err)
1283 return err;
1284
1285 switch(rate) {
1286 case 1:
1287 rrq->value = 1000000;
1288 break;
1289 case 2:
1290 rrq->value = 2000000;
1291 break;
1292 case 5:
1293 rrq->value = 5500000;
1294 break;
1295 case 11:
1296 rrq->value = 11000000;
1297 break;
1298 default:
1299 rrq->value = 0;
1300 }
1301 rrq->fixed = 0;
1302 rrq->disabled = 0;
1303
1304 return 0;
1305 }
1306
1307 static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1308 struct iw_param *rts, char *extra)
1309 {
1310 struct zd1201 *zd = netdev_priv(dev);
1311 int err;
1312 short val = rts->value;
1313
1314 if (rts->disabled || !rts->fixed)
1315 val = ZD1201_RTSMAX;
1316 if (val > ZD1201_RTSMAX)
1317 return -EINVAL;
1318 if (val < 0)
1319 return -EINVAL;
1320
1321 err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1322 if (err)
1323 return err;
1324 return zd1201_mac_reset(zd);
1325 }
1326
1327 static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1328 struct iw_param *rts, char *extra)
1329 {
1330 struct zd1201 *zd = netdev_priv(dev);
1331 short rtst;
1332 int err;
1333
1334 err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1335 if (err)
1336 return err;
1337 rts->value = rtst;
1338 rts->disabled = (rts->value == ZD1201_RTSMAX);
1339 rts->fixed = 1;
1340
1341 return 0;
1342 }
1343
1344 static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1345 struct iw_param *frag, char *extra)
1346 {
1347 struct zd1201 *zd = netdev_priv(dev);
1348 int err;
1349 short val = frag->value;
1350
1351 if (frag->disabled || !frag->fixed)
1352 val = ZD1201_FRAGMAX;
1353 if (val > ZD1201_FRAGMAX)
1354 return -EINVAL;
1355 if (val < ZD1201_FRAGMIN)
1356 return -EINVAL;
1357 if (val & 1)
1358 return -EINVAL;
1359 err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1360 if (err)
1361 return err;
1362 return zd1201_mac_reset(zd);
1363 }
1364
1365 static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1366 struct iw_param *frag, char *extra)
1367 {
1368 struct zd1201 *zd = netdev_priv(dev);
1369 short fragt;
1370 int err;
1371
1372 err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1373 if (err)
1374 return err;
1375 frag->value = fragt;
1376 frag->disabled = (frag->value == ZD1201_FRAGMAX);
1377 frag->fixed = 1;
1378
1379 return 0;
1380 }
1381
1382 static int zd1201_set_retry(struct net_device *dev,
1383 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1384 {
1385 return 0;
1386 }
1387
1388 static int zd1201_get_retry(struct net_device *dev,
1389 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1390 {
1391 return 0;
1392 }
1393
1394 static int zd1201_set_encode(struct net_device *dev,
1395 struct iw_request_info *info, struct iw_point *erq, char *key)
1396 {
1397 struct zd1201 *zd = netdev_priv(dev);
1398 short i;
1399 int err, rid;
1400
1401 if (erq->length > ZD1201_MAXKEYLEN)
1402 return -EINVAL;
1403
1404 i = (erq->flags & IW_ENCODE_INDEX)-1;
1405 if (i == -1) {
1406 err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1407 if (err)
1408 return err;
1409 } else {
1410 err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1411 if (err)
1412 return err;
1413 }
1414
1415 if (i < 0 || i >= ZD1201_NUMKEYS)
1416 return -EINVAL;
1417
1418 rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1419 err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1420 if (err)
1421 return err;
1422 zd->encode_keylen[i] = erq->length;
1423 memcpy(zd->encode_keys[i], key, erq->length);
1424
1425 i=0;
1426 if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1427 i |= 0x01;
1428 zd->encode_enabled = 1;
1429 } else
1430 zd->encode_enabled = 0;
1431 if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1432 i |= 0x02;
1433 zd->encode_restricted = 1;
1434 } else
1435 zd->encode_restricted = 0;
1436 err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1437 if (err)
1438 return err;
1439
1440 if (zd->encode_enabled)
1441 i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1442 else
1443 i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1444 err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1445 if (err)
1446 return err;
1447
1448 return zd1201_mac_reset(zd);
1449 }
1450
1451 static int zd1201_get_encode(struct net_device *dev,
1452 struct iw_request_info *info, struct iw_point *erq, char *key)
1453 {
1454 struct zd1201 *zd = netdev_priv(dev);
1455 short i;
1456 int err;
1457
1458 if (zd->encode_enabled)
1459 erq->flags = IW_ENCODE_ENABLED;
1460 else
1461 erq->flags = IW_ENCODE_DISABLED;
1462 if (zd->encode_restricted)
1463 erq->flags |= IW_ENCODE_RESTRICTED;
1464 else
1465 erq->flags |= IW_ENCODE_OPEN;
1466
1467 i = (erq->flags & IW_ENCODE_INDEX) -1;
1468 if (i == -1) {
1469 err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1470 if (err)
1471 return err;
1472 }
1473 if (i<0 || i>= ZD1201_NUMKEYS)
1474 return -EINVAL;
1475
1476 erq->flags |= i+1;
1477
1478 erq->length = zd->encode_keylen[i];
1479 memcpy(key, zd->encode_keys[i], erq->length);
1480
1481 return 0;
1482 }
1483
1484 static int zd1201_set_power(struct net_device *dev,
1485 struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1486 {
1487 struct zd1201 *zd = netdev_priv(dev);
1488 short enabled, duration, level;
1489 int err;
1490
1491 enabled = vwrq->disabled ? 0 : 1;
1492 if (enabled) {
1493 if (vwrq->flags & IW_POWER_PERIOD) {
1494 duration = vwrq->value;
1495 err = zd1201_setconfig16(zd,
1496 ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1497 if (err)
1498 return err;
1499 goto out;
1500 }
1501 if (vwrq->flags & IW_POWER_TIMEOUT) {
1502 err = zd1201_getconfig16(zd,
1503 ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1504 if (err)
1505 return err;
1506 level = vwrq->value * 4 / duration;
1507 if (level > 4)
1508 level = 4;
1509 if (level < 0)
1510 level = 0;
1511 err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1512 level);
1513 if (err)
1514 return err;
1515 goto out;
1516 }
1517 return -EINVAL;
1518 }
1519 out:
1520 return zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1521 }
1522
1523 static int zd1201_get_power(struct net_device *dev,
1524 struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1525 {
1526 struct zd1201 *zd = netdev_priv(dev);
1527 short enabled, level, duration;
1528 int err;
1529
1530 err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1531 if (err)
1532 return err;
1533 err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1534 if (err)
1535 return err;
1536 err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1537 if (err)
1538 return err;
1539 vwrq->disabled = enabled ? 0 : 1;
1540 if (vwrq->flags & IW_POWER_TYPE) {
1541 if (vwrq->flags & IW_POWER_PERIOD) {
1542 vwrq->value = duration;
1543 vwrq->flags = IW_POWER_PERIOD;
1544 } else {
1545 vwrq->value = duration * level / 4;
1546 vwrq->flags = IW_POWER_TIMEOUT;
1547 }
1548 }
1549 if (vwrq->flags & IW_POWER_MODE) {
1550 if (enabled && level)
1551 vwrq->flags = IW_POWER_UNICAST_R;
1552 else
1553 vwrq->flags = IW_POWER_ALL_R;
1554 }
1555
1556 return 0;
1557 }
1558
1559
1560 static const iw_handler zd1201_iw_handler[] =
1561 {
1562 (iw_handler) zd1201_config_commit, /* SIOCSIWCOMMIT */
1563 (iw_handler) zd1201_get_name, /* SIOCGIWNAME */
1564 (iw_handler) NULL, /* SIOCSIWNWID */
1565 (iw_handler) NULL, /* SIOCGIWNWID */
1566 (iw_handler) zd1201_set_freq, /* SIOCSIWFREQ */
1567 (iw_handler) zd1201_get_freq, /* SIOCGIWFREQ */
1568 (iw_handler) zd1201_set_mode, /* SIOCSIWMODE */
1569 (iw_handler) zd1201_get_mode, /* SIOCGIWMODE */
1570 (iw_handler) NULL, /* SIOCSIWSENS */
1571 (iw_handler) NULL, /* SIOCGIWSENS */
1572 (iw_handler) NULL, /* SIOCSIWRANGE */
1573 (iw_handler) zd1201_get_range, /* SIOCGIWRANGE */
1574 (iw_handler) NULL, /* SIOCSIWPRIV */
1575 (iw_handler) NULL, /* SIOCGIWPRIV */
1576 (iw_handler) NULL, /* SIOCSIWSTATS */
1577 (iw_handler) NULL, /* SIOCGIWSTATS */
1578 (iw_handler) NULL, /* SIOCSIWSPY */
1579 (iw_handler) NULL, /* SIOCGIWSPY */
1580 (iw_handler) NULL, /* -- hole -- */
1581 (iw_handler) NULL, /* -- hole -- */
1582 (iw_handler) NULL/*zd1201_set_wap*/, /* SIOCSIWAP */
1583 (iw_handler) zd1201_get_wap, /* SIOCGIWAP */
1584 (iw_handler) NULL, /* -- hole -- */
1585 (iw_handler) NULL, /* SIOCGIWAPLIST */
1586 (iw_handler) zd1201_set_scan, /* SIOCSIWSCAN */
1587 (iw_handler) zd1201_get_scan, /* SIOCGIWSCAN */
1588 (iw_handler) zd1201_set_essid, /* SIOCSIWESSID */
1589 (iw_handler) zd1201_get_essid, /* SIOCGIWESSID */
1590 (iw_handler) NULL, /* SIOCSIWNICKN */
1591 (iw_handler) zd1201_get_nick, /* SIOCGIWNICKN */
1592 (iw_handler) NULL, /* -- hole -- */
1593 (iw_handler) NULL, /* -- hole -- */
1594 (iw_handler) zd1201_set_rate, /* SIOCSIWRATE */
1595 (iw_handler) zd1201_get_rate, /* SIOCGIWRATE */
1596 (iw_handler) zd1201_set_rts, /* SIOCSIWRTS */
1597 (iw_handler) zd1201_get_rts, /* SIOCGIWRTS */
1598 (iw_handler) zd1201_set_frag, /* SIOCSIWFRAG */
1599 (iw_handler) zd1201_get_frag, /* SIOCGIWFRAG */
1600 (iw_handler) NULL, /* SIOCSIWTXPOW */
1601 (iw_handler) NULL, /* SIOCGIWTXPOW */
1602 (iw_handler) zd1201_set_retry, /* SIOCSIWRETRY */
1603 (iw_handler) zd1201_get_retry, /* SIOCGIWRETRY */
1604 (iw_handler) zd1201_set_encode, /* SIOCSIWENCODE */
1605 (iw_handler) zd1201_get_encode, /* SIOCGIWENCODE */
1606 (iw_handler) zd1201_set_power, /* SIOCSIWPOWER */
1607 (iw_handler) zd1201_get_power, /* SIOCGIWPOWER */
1608 };
1609
1610 static int zd1201_set_hostauth(struct net_device *dev,
1611 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1612 {
1613 struct zd1201 *zd = netdev_priv(dev);
1614
1615 if (!zd->ap)
1616 return -EOPNOTSUPP;
1617
1618 return zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1619 }
1620
1621 static int zd1201_get_hostauth(struct net_device *dev,
1622 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1623 {
1624 struct zd1201 *zd = netdev_priv(dev);
1625 short hostauth;
1626 int err;
1627
1628 if (!zd->ap)
1629 return -EOPNOTSUPP;
1630
1631 err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1632 if (err)
1633 return err;
1634 rrq->value = hostauth;
1635 rrq->fixed = 1;
1636
1637 return 0;
1638 }
1639
1640 static int zd1201_auth_sta(struct net_device *dev,
1641 struct iw_request_info *info, struct sockaddr *sta, char *extra)
1642 {
1643 struct zd1201 *zd = netdev_priv(dev);
1644 unsigned char buffer[10];
1645
1646 if (!zd->ap)
1647 return -EOPNOTSUPP;
1648
1649 memcpy(buffer, sta->sa_data, ETH_ALEN);
1650 *(short*)(buffer+6) = 0; /* 0==success, 1==failure */
1651 *(short*)(buffer+8) = 0;
1652
1653 return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1654 }
1655
1656 static int zd1201_set_maxassoc(struct net_device *dev,
1657 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1658 {
1659 struct zd1201 *zd = netdev_priv(dev);
1660 int err;
1661
1662 if (!zd->ap)
1663 return -EOPNOTSUPP;
1664
1665 err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1666 if (err)
1667 return err;
1668 return 0;
1669 }
1670
1671 static int zd1201_get_maxassoc(struct net_device *dev,
1672 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1673 {
1674 struct zd1201 *zd = netdev_priv(dev);
1675 short maxassoc;
1676 int err;
1677
1678 if (!zd->ap)
1679 return -EOPNOTSUPP;
1680
1681 err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1682 if (err)
1683 return err;
1684 rrq->value = maxassoc;
1685 rrq->fixed = 1;
1686
1687 return 0;
1688 }
1689
1690 static const iw_handler zd1201_private_handler[] = {
1691 (iw_handler) zd1201_set_hostauth, /* ZD1201SIWHOSTAUTH */
1692 (iw_handler) zd1201_get_hostauth, /* ZD1201GIWHOSTAUTH */
1693 (iw_handler) zd1201_auth_sta, /* ZD1201SIWAUTHSTA */
1694 (iw_handler) NULL, /* nothing to get */
1695 (iw_handler) zd1201_set_maxassoc, /* ZD1201SIMAXASSOC */
1696 (iw_handler) zd1201_get_maxassoc, /* ZD1201GIMAXASSOC */
1697 };
1698
1699 static const struct iw_priv_args zd1201_private_args[] = {
1700 { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1701 IW_PRIV_TYPE_NONE, "sethostauth" },
1702 { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1703 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1704 { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1705 IW_PRIV_TYPE_NONE, "authstation" },
1706 { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1707 IW_PRIV_TYPE_NONE, "setmaxassoc" },
1708 { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1709 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1710 };
1711
1712 static const struct iw_handler_def zd1201_iw_handlers = {
1713 .num_standard = ARRAY_SIZE(zd1201_iw_handler),
1714 .num_private = ARRAY_SIZE(zd1201_private_handler),
1715 .num_private_args = ARRAY_SIZE(zd1201_private_args),
1716 .standard = (iw_handler *)zd1201_iw_handler,
1717 .private = (iw_handler *)zd1201_private_handler,
1718 .private_args = (struct iw_priv_args *) zd1201_private_args,
1719 .get_wireless_stats = zd1201_get_wireless_stats,
1720 };
1721
1722 static const struct net_device_ops zd1201_netdev_ops = {
1723 .ndo_open = zd1201_net_open,
1724 .ndo_stop = zd1201_net_stop,
1725 .ndo_start_xmit = zd1201_hard_start_xmit,
1726 .ndo_tx_timeout = zd1201_tx_timeout,
1727 .ndo_set_multicast_list = zd1201_set_multicast,
1728 .ndo_set_mac_address = zd1201_set_mac_address,
1729 .ndo_change_mtu = eth_change_mtu,
1730 .ndo_validate_addr = eth_validate_addr,
1731 };
1732
1733 static int zd1201_probe(struct usb_interface *interface,
1734 const struct usb_device_id *id)
1735 {
1736 struct zd1201 *zd;
1737 struct net_device *dev;
1738 struct usb_device *usb;
1739 int err;
1740 short porttype;
1741 char buf[IW_ESSID_MAX_SIZE+2];
1742
1743 usb = interface_to_usbdev(interface);
1744
1745 dev = alloc_etherdev(sizeof(*zd));
1746 if (!dev)
1747 return -ENOMEM;
1748 zd = netdev_priv(dev);
1749 zd->dev = dev;
1750
1751 zd->ap = ap;
1752 zd->usb = usb;
1753 zd->removed = 0;
1754 init_waitqueue_head(&zd->rxdataq);
1755 INIT_HLIST_HEAD(&zd->fraglist);
1756
1757 err = zd1201_fw_upload(usb, zd->ap);
1758 if (err) {
1759 dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
1760 goto err_zd;
1761 }
1762
1763 zd->endp_in = 1;
1764 zd->endp_out = 1;
1765 zd->endp_out2 = 2;
1766 zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1767 zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1768 if (!zd->rx_urb || !zd->tx_urb)
1769 goto err_zd;
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=(struct zd1201 *)usb_get_intfdata(interface);
1836 struct hlist_node *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, node, 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 };
1911
1912 static int __init zd1201_init(void)
1913 {
1914 return usb_register(&zd1201_usb);
1915 }
1916
1917 static void __exit zd1201_cleanup(void)
1918 {
1919 usb_deregister(&zd1201_usb);
1920 }
1921
1922 module_init(zd1201_init);
1923 module_exit(zd1201_cleanup);
Linux kernel - Deliverables
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