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x86/amd-iommu: Add per IOMMU reference counting
[linux/fpc-iii.git] / drivers / net / wireless / zd1201.c
blobbc81974a2bc7a5aed26de9e28b5e0a7abb7efff2
1 /*
2 * Driver for ZyDAS zd1201 based wireless USB devices.
3 *
4 * Copyright (c) 2004, 2005 Jeroen Vreeken (pe1rxq@amsat.org)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * version 2 as published by the Free Software Foundation.
9 *
10 * Parts of this driver have been derived from a wlan-ng version
11 * modified by ZyDAS. They also made documentation available, thanks!
12 * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
13 */
14
15 #include <linux/module.h>
16 #include <linux/usb.h>
17 #include <linux/netdevice.h>
18 #include <linux/etherdevice.h>
19 #include <linux/wireless.h>
20 #include <linux/ieee80211.h>
21 #include <net/iw_handler.h>
22 #include <linux/string.h>
23 #include <linux/if_arp.h>
24 #include <linux/firmware.h>
25 #include "zd1201.h"
26
27 static struct usb_device_id zd1201_table[] = {
28 {USB_DEVICE(0x0586, 0x3400)}, /* Peabird Wireless USB Adapter */
29 {USB_DEVICE(0x0ace, 0x1201)}, /* ZyDAS ZD1201 Wireless USB Adapter */
30 {USB_DEVICE(0x050d, 0x6051)}, /* Belkin F5D6051 usb adapter */
31 {USB_DEVICE(0x0db0, 0x6823)}, /* MSI UB11B usb adapter */
32 {USB_DEVICE(0x1044, 0x8005)}, /* GIGABYTE GN-WLBZ201 usb adapter */
33 {}
34 };
35
36 static int ap; /* Are we an AP or a normal station? */
37
38 #define ZD1201_VERSION "0.15"
39
40 MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>");
41 MODULE_DESCRIPTION("Driver for ZyDAS ZD1201 based USB Wireless adapters");
42 MODULE_VERSION(ZD1201_VERSION);
43 MODULE_LICENSE("GPL");
44 module_param(ap, int, 0);
45 MODULE_PARM_DESC(ap, "If non-zero Access Point firmware will be loaded");
46 MODULE_DEVICE_TABLE(usb, zd1201_table);
47
48
49 static int zd1201_fw_upload(struct usb_device *dev, int apfw)
50 {
51 const struct firmware *fw_entry;
52 const char *data;
53 unsigned long len;
54 int err;
55 unsigned char ret;
56 char *buf;
57 char *fwfile;
58
59 if (apfw)
60 fwfile = "zd1201-ap.fw";
61 else
62 fwfile = "zd1201.fw";
63
64 err = request_firmware(&fw_entry, fwfile, &dev->dev);
65 if (err) {
66 dev_err(&dev->dev, "Failed to load %s firmware file!\n", fwfile);
67 dev_err(&dev->dev, "Make sure the hotplug firmware loader is installed.\n");
68 dev_err(&dev->dev, "Goto http://linux-lc100020.sourceforge.net for more info.\n");
69 return err;
70 }
71
72 data = fw_entry->data;
73 len = fw_entry->size;
74
75 buf = kmalloc(1024, GFP_ATOMIC);
76 if (!buf)
77 goto exit;
78
79 while (len > 0) {
80 int translen = (len > 1024) ? 1024 : len;
81 memcpy(buf, data, translen);
82
83 err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0,
84 USB_DIR_OUT | 0x40, 0, 0, buf, translen,
85 ZD1201_FW_TIMEOUT);
86 if (err < 0)
87 goto exit;
88
89 len -= translen;
90 data += translen;
91 }
92
93 err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0x2,
94 USB_DIR_OUT | 0x40, 0, 0, NULL, 0, ZD1201_FW_TIMEOUT);
95 if (err < 0)
96 goto exit;
97
98 err = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 0x4,
99 USB_DIR_IN | 0x40, 0,0, &ret, sizeof(ret), ZD1201_FW_TIMEOUT);
100 if (err < 0)
101 goto exit;
102
103 if (ret & 0x80) {
104 err = -EIO;
105 goto exit;
106 }
107
108 err = 0;
109 exit:
110 kfree(buf);
111 release_firmware(fw_entry);
112 return err;
113 }
114
115 static void zd1201_usbfree(struct urb *urb)
116 {
117 struct zd1201 *zd = urb->context;
118
119 switch(urb->status) {
120 case -EILSEQ:
121 case -ENODEV:
122 case -ETIME:
123 case -ENOENT:
124 case -EPIPE:
125 case -EOVERFLOW:
126 case -ESHUTDOWN:
127 dev_warn(&zd->usb->dev, "%s: urb failed: %d\n",
128 zd->dev->name, urb->status);
129 }
130
131 kfree(urb->transfer_buffer);
132 usb_free_urb(urb);
133 return;
134 }
135
136 /* cmdreq message:
137 u32 type
138 u16 cmd
139 u16 parm0
140 u16 parm1
141 u16 parm2
142 u8 pad[4]
143
144 total: 4 + 2 + 2 + 2 + 2 + 4 = 16
145 */
146 static int zd1201_docmd(struct zd1201 *zd, int cmd, int parm0,
147 int parm1, int parm2)
148 {
149 unsigned char *command;
150 int ret;
151 struct urb *urb;
152
153 command = kmalloc(16, GFP_ATOMIC);
154 if (!command)
155 return -ENOMEM;
156
157 *((__le32*)command) = cpu_to_le32(ZD1201_USB_CMDREQ);
158 *((__le16*)&command[4]) = cpu_to_le16(cmd);
159 *((__le16*)&command[6]) = cpu_to_le16(parm0);
160 *((__le16*)&command[8]) = cpu_to_le16(parm1);
161 *((__le16*)&command[10])= cpu_to_le16(parm2);
162
163 urb = usb_alloc_urb(0, GFP_ATOMIC);
164 if (!urb) {
165 kfree(command);
166 return -ENOMEM;
167 }
168 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
169 command, 16, zd1201_usbfree, zd);
170 ret = usb_submit_urb(urb, GFP_ATOMIC);
171 if (ret) {
172 kfree(command);
173 usb_free_urb(urb);
174 }
175
176 return ret;
177 }
178
179 /* Callback after sending out a packet */
180 static void zd1201_usbtx(struct urb *urb)
181 {
182 struct zd1201 *zd = urb->context;
183 netif_wake_queue(zd->dev);
184 return;
185 }
186
187 /* Incoming data */
188 static void zd1201_usbrx(struct urb *urb)
189 {
190 struct zd1201 *zd = urb->context;
191 int free = 0;
192 unsigned char *data = urb->transfer_buffer;
193 struct sk_buff *skb;
194 unsigned char type;
195
196 if (!zd)
197 return;
198
199 switch(urb->status) {
200 case -EILSEQ:
201 case -ENODEV:
202 case -ETIME:
203 case -ENOENT:
204 case -EPIPE:
205 case -EOVERFLOW:
206 case -ESHUTDOWN:
207 dev_warn(&zd->usb->dev, "%s: rx urb failed: %d\n",
208 zd->dev->name, urb->status);
209 free = 1;
210 goto exit;
211 }
212
213 if (urb->status != 0 || urb->actual_length == 0)
214 goto resubmit;
215
216 type = data[0];
217 if (type == ZD1201_PACKET_EVENTSTAT || type == ZD1201_PACKET_RESOURCE) {
218 memcpy(zd->rxdata, data, urb->actual_length);
219 zd->rxlen = urb->actual_length;
220 zd->rxdatas = 1;
221 wake_up(&zd->rxdataq);
222 }
223 /* Info frame */
224 if (type == ZD1201_PACKET_INQUIRE) {
225 int i = 0;
226 unsigned short infotype, framelen, copylen;
227 framelen = le16_to_cpu(*(__le16*)&data[4]);
228 infotype = le16_to_cpu(*(__le16*)&data[6]);
229
230 if (infotype == ZD1201_INF_LINKSTATUS) {
231 short linkstatus;
232
233 linkstatus = le16_to_cpu(*(__le16*)&data[8]);
234 switch(linkstatus) {
235 case 1:
236 netif_carrier_on(zd->dev);
237 break;
238 case 2:
239 netif_carrier_off(zd->dev);
240 break;
241 case 3:
242 netif_carrier_off(zd->dev);
243 break;
244 case 4:
245 netif_carrier_on(zd->dev);
246 break;
247 default:
248 netif_carrier_off(zd->dev);
249 }
250 goto resubmit;
251 }
252 if (infotype == ZD1201_INF_ASSOCSTATUS) {
253 short status = le16_to_cpu(*(__le16*)(data+8));
254 int event;
255 union iwreq_data wrqu;
256
257 switch (status) {
258 case ZD1201_ASSOCSTATUS_STAASSOC:
259 case ZD1201_ASSOCSTATUS_REASSOC:
260 event = IWEVREGISTERED;
261 break;
262 case ZD1201_ASSOCSTATUS_DISASSOC:
263 case ZD1201_ASSOCSTATUS_ASSOCFAIL:
264 case ZD1201_ASSOCSTATUS_AUTHFAIL:
265 default:
266 event = IWEVEXPIRED;
267 }
268 memcpy(wrqu.addr.sa_data, data+10, ETH_ALEN);
269 wrqu.addr.sa_family = ARPHRD_ETHER;
270
271 /* Send event to user space */
272 wireless_send_event(zd->dev, event, &wrqu, NULL);
273
274 goto resubmit;
275 }
276 if (infotype == ZD1201_INF_AUTHREQ) {
277 union iwreq_data wrqu;
278
279 memcpy(wrqu.addr.sa_data, data+8, ETH_ALEN);
280 wrqu.addr.sa_family = ARPHRD_ETHER;
281 /* There isn't a event that trully fits this request.
282 We assume that userspace will be smart enough to
283 see a new station being expired and sends back a
284 authstation ioctl to authorize it. */
285 wireless_send_event(zd->dev, IWEVEXPIRED, &wrqu, NULL);
286 goto resubmit;
287 }
288 /* Other infotypes are handled outside this handler */
289 zd->rxlen = 0;
290 while (i < urb->actual_length) {
291 copylen = le16_to_cpu(*(__le16*)&data[i+2]);
292 /* Sanity check, sometimes we get junk */
293 if (copylen+zd->rxlen > sizeof(zd->rxdata))
294 break;
295 memcpy(zd->rxdata+zd->rxlen, data+i+4, copylen);
296 zd->rxlen += copylen;
297 i += 64;
298 }
299 if (i >= urb->actual_length) {
300 zd->rxdatas = 1;
301 wake_up(&zd->rxdataq);
302 }
303 goto resubmit;
304 }
305 /* Actual data */
306 if (data[urb->actual_length-1] == ZD1201_PACKET_RXDATA) {
307 int datalen = urb->actual_length-1;
308 unsigned short len, fc, seq;
309 struct hlist_node *node;
310
311 len = ntohs(*(__be16 *)&data[datalen-2]);
312 if (len>datalen)
313 len=datalen;
314 fc = le16_to_cpu(*(__le16 *)&data[datalen-16]);
315 seq = le16_to_cpu(*(__le16 *)&data[datalen-24]);
316
317 if (zd->monitor) {
318 if (datalen < 24)
319 goto resubmit;
320 if (!(skb = dev_alloc_skb(datalen+24)))
321 goto resubmit;
322
323 memcpy(skb_put(skb, 2), &data[datalen-16], 2);
324 memcpy(skb_put(skb, 2), &data[datalen-2], 2);
325 memcpy(skb_put(skb, 6), &data[datalen-14], 6);
326 memcpy(skb_put(skb, 6), &data[datalen-22], 6);
327 memcpy(skb_put(skb, 6), &data[datalen-8], 6);
328 memcpy(skb_put(skb, 2), &data[datalen-24], 2);
329 memcpy(skb_put(skb, len), data, len);
330 skb->protocol = eth_type_trans(skb, zd->dev);
331 zd->dev->stats.rx_packets++;
332 zd->dev->stats.rx_bytes += skb->len;
333 netif_rx(skb);
334 goto resubmit;
335 }
336
337 if ((seq & IEEE80211_SCTL_FRAG) ||
338 (fc & IEEE80211_FCTL_MOREFRAGS)) {
339 struct zd1201_frag *frag = NULL;
340 char *ptr;
341
342 if (datalen<14)
343 goto resubmit;
344 if ((seq & IEEE80211_SCTL_FRAG) == 0) {
345 frag = kmalloc(sizeof(*frag), GFP_ATOMIC);
346 if (!frag)
347 goto resubmit;
348 skb = dev_alloc_skb(IEEE80211_MAX_DATA_LEN +14+2);
349 if (!skb) {
350 kfree(frag);
351 goto resubmit;
352 }
353 frag->skb = skb;
354 frag->seq = seq & IEEE80211_SCTL_SEQ;
355 skb_reserve(skb, 2);
356 memcpy(skb_put(skb, 12), &data[datalen-14], 12);
357 memcpy(skb_put(skb, 2), &data[6], 2);
358 memcpy(skb_put(skb, len), data+8, len);
359 hlist_add_head(&frag->fnode, &zd->fraglist);
360 goto resubmit;
361 }
362 hlist_for_each_entry(frag, node, &zd->fraglist, fnode)
363 if (frag->seq == (seq&IEEE80211_SCTL_SEQ))
364 break;
365 if (!frag)
366 goto resubmit;
367 skb = frag->skb;
368 ptr = skb_put(skb, len);
369 if (ptr)
370 memcpy(ptr, data+8, len);
371 if (fc & IEEE80211_FCTL_MOREFRAGS)
372 goto resubmit;
373 hlist_del_init(&frag->fnode);
374 kfree(frag);
375 } else {
376 if (datalen<14)
377 goto resubmit;
378 skb = dev_alloc_skb(len + 14 + 2);
379 if (!skb)
380 goto resubmit;
381 skb_reserve(skb, 2);
382 memcpy(skb_put(skb, 12), &data[datalen-14], 12);
383 memcpy(skb_put(skb, 2), &data[6], 2);
384 memcpy(skb_put(skb, len), data+8, len);
385 }
386 skb->protocol = eth_type_trans(skb, zd->dev);
387 zd->dev->stats.rx_packets++;
388 zd->dev->stats.rx_bytes += skb->len;
389 netif_rx(skb);
390 }
391 resubmit:
392 memset(data, 0, ZD1201_RXSIZE);
393
394 urb->status = 0;
395 urb->dev = zd->usb;
396 if(usb_submit_urb(urb, GFP_ATOMIC))
397 free = 1;
398
399 exit:
400 if (free) {
401 zd->rxlen = 0;
402 zd->rxdatas = 1;
403 wake_up(&zd->rxdataq);
404 kfree(urb->transfer_buffer);
405 }
406 return;
407 }
408
409 static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
410 unsigned int riddatalen)
411 {
412 int err;
413 int i = 0;
414 int code;
415 int rid_fid;
416 int length;
417 unsigned char *pdata;
418
419 zd->rxdatas = 0;
420 err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
421 if (err)
422 return err;
423
424 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
425 if (!zd->rxlen)
426 return -EIO;
427
428 code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
429 rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
430 length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
431 if (length > zd->rxlen)
432 length = zd->rxlen-6;
433
434 /* If access bit is not on, then error */
435 if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
436 return -EINVAL;
437
438 /* Not enough buffer for allocating data */
439 if (riddatalen != (length - 4)) {
440 dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
441 riddatalen, zd->rxlen, length, rid, rid_fid);
442 return -ENODATA;
443 }
444
445 zd->rxdatas = 0;
446 /* Issue SetRxRid commnd */
447 err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
448 if (err)
449 return err;
450
451 /* Receive RID record from resource packets */
452 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
453 if (!zd->rxlen)
454 return -EIO;
455
456 if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
457 dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
458 zd->rxdata[zd->rxlen-1]);
459 return -EINVAL;
460 }
461
462 /* Set the data pointer and received data length */
463 pdata = zd->rxdata;
464 length = zd->rxlen;
465
466 do {
467 int actual_length;
468
469 actual_length = (length > 64) ? 64 : length;
470
471 if (pdata[0] != 0x3) {
472 dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
473 pdata[0]);
474 return -EINVAL;
475 }
476
477 if (actual_length != 64) {
478 /* Trim the last packet type byte */
479 actual_length--;
480 }
481
482 /* Skip the 4 bytes header (RID length and RID) */
483 if (i == 0) {
484 pdata += 8;
485 actual_length -= 8;
486 } else {
487 pdata += 4;
488 actual_length -= 4;
489 }
490
491 memcpy(riddata, pdata, actual_length);
492 riddata += actual_length;
493 pdata += actual_length;
494 length -= 64;
495 i++;
496 } while (length > 0);
497
498 return 0;
499 }
500
501 /*
502 * resreq:
503 * byte type
504 * byte sequence
505 * u16 reserved
506 * byte data[12]
507 * total: 16
508 */
509 static int zd1201_setconfig(struct zd1201 *zd, int rid, void *buf, int len, int wait)
510 {
511 int err;
512 unsigned char *request;
513 int reqlen;
514 char seq=0;
515 struct urb *urb;
516 gfp_t gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
517
518 len += 4; /* first 4 are for header */
519
520 zd->rxdatas = 0;
521 zd->rxlen = 0;
522 for (seq=0; len > 0; seq++) {
523 request = kmalloc(16, gfp_mask);
524 if (!request)
525 return -ENOMEM;
526 urb = usb_alloc_urb(0, gfp_mask);
527 if (!urb) {
528 kfree(request);
529 return -ENOMEM;
530 }
531 memset(request, 0, 16);
532 reqlen = len>12 ? 12 : len;
533 request[0] = ZD1201_USB_RESREQ;
534 request[1] = seq;
535 request[2] = 0;
536 request[3] = 0;
537 if (request[1] == 0) {
538 /* add header */
539 *(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
540 *(__le16*)&request[6] = cpu_to_le16(rid);
541 memcpy(request+8, buf, reqlen-4);
542 buf += reqlen-4;
543 } else {
544 memcpy(request+4, buf, reqlen);
545 buf += reqlen;
546 }
547
548 len -= reqlen;
549
550 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
551 zd->endp_out2), request, 16, zd1201_usbfree, zd);
552 err = usb_submit_urb(urb, gfp_mask);
553 if (err)
554 goto err;
555 }
556
557 request = kmalloc(16, gfp_mask);
558 if (!request)
559 return -ENOMEM;
560 urb = usb_alloc_urb(0, gfp_mask);
561 if (!urb) {
562 kfree(request);
563 return -ENOMEM;
564 }
565 *((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
566 *((__le16*)&request[4]) =
567 cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
568 *((__le16*)&request[6]) = cpu_to_le16(rid);
569 *((__le16*)&request[8]) = cpu_to_le16(0);
570 *((__le16*)&request[10]) = cpu_to_le16(0);
571 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
572 request, 16, zd1201_usbfree, zd);
573 err = usb_submit_urb(urb, gfp_mask);
574 if (err)
575 goto err;
576
577 if (wait) {
578 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
579 if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
580 dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
581 }
582 }
583
584 return 0;
585 err:
586 kfree(request);
587 usb_free_urb(urb);
588 return err;
589 }
590
591 static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
592 {
593 int err;
594 __le16 zdval;
595
596 err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
597 if (err)
598 return err;
599 *val = le16_to_cpu(zdval);
600 return 0;
601 }
602
603 static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
604 {
605 __le16 zdval = cpu_to_le16(val);
606 return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
607 }
608
609 static int zd1201_drvr_start(struct zd1201 *zd)
610 {
611 int err, i;
612 short max;
613 __le16 zdmax;
614 unsigned char *buffer;
615
616 buffer = kzalloc(ZD1201_RXSIZE, GFP_KERNEL);
617 if (!buffer)
618 return -ENOMEM;
619
620 usb_fill_bulk_urb(zd->rx_urb, zd->usb,
621 usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
622 zd1201_usbrx, zd);
623
624 err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
625 if (err)
626 goto err_buffer;
627
628 err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
629 if (err)
630 goto err_urb;
631
632 err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
633 sizeof(__le16));
634 if (err)
635 goto err_urb;
636
637 max = le16_to_cpu(zdmax);
638 for (i=0; i<max; i++) {
639 err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
640 if (err)
641 goto err_urb;
642 }
643
644 return 0;
645
646 err_urb:
647 usb_kill_urb(zd->rx_urb);
648 return err;
649 err_buffer:
650 kfree(buffer);
651 return err;
652 }
653
654 /* Magic alert: The firmware doesn't seem to like the MAC state being
655 * toggled in promisc (aka monitor) mode.
656 * (It works a number of times, but will halt eventually)
657 * So we turn it of before disabling and on after enabling if needed.
658 */
659 static int zd1201_enable(struct zd1201 *zd)
660 {
661 int err;
662
663 if (zd->mac_enabled)
664 return 0;
665
666 err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
667 if (!err)
668 zd->mac_enabled = 1;
669
670 if (zd->monitor)
671 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
672
673 return err;
674 }
675
676 static int zd1201_disable(struct zd1201 *zd)
677 {
678 int err;
679
680 if (!zd->mac_enabled)
681 return 0;
682 if (zd->monitor) {
683 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
684 if (err)
685 return err;
686 }
687
688 err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
689 if (!err)
690 zd->mac_enabled = 0;
691 return err;
692 }
693
694 static int zd1201_mac_reset(struct zd1201 *zd)
695 {
696 if (!zd->mac_enabled)
697 return 0;
698 zd1201_disable(zd);
699 return zd1201_enable(zd);
700 }
701
702 static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
703 {
704 int err, val;
705 char buf[IW_ESSID_MAX_SIZE+2];
706
707 err = zd1201_disable(zd);
708 if (err)
709 return err;
710
711 val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
712 val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
713 err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
714 if (err)
715 return err;
716
717 *(__le16 *)buf = cpu_to_le16(essidlen);
718 memcpy(buf+2, essid, essidlen);
719 if (!zd->ap) { /* Normal station */
720 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
721 IW_ESSID_MAX_SIZE+2, 1);
722 if (err)
723 return err;
724 } else { /* AP */
725 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
726 IW_ESSID_MAX_SIZE+2, 1);
727 if (err)
728 return err;
729 }
730
731 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
732 zd->dev->dev_addr, zd->dev->addr_len, 1);
733 if (err)
734 return err;
735
736 err = zd1201_enable(zd);
737 if (err)
738 return err;
739
740 msleep(100);
741 return 0;
742 }
743
744 static int zd1201_net_open(struct net_device *dev)
745 {
746 struct zd1201 *zd = netdev_priv(dev);
747
748 /* Start MAC with wildcard if no essid set */
749 if (!zd->mac_enabled)
750 zd1201_join(zd, zd->essid, zd->essidlen);
751 netif_start_queue(dev);
752
753 return 0;
754 }
755
756 static int zd1201_net_stop(struct net_device *dev)
757 {
758 netif_stop_queue(dev);
759 return 0;
760 }
761
762 /*
763 RFC 1042 encapsulates Ethernet frames in 802.11 frames
764 by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
765 (0x00, 0x00, 0x00). Zd requires an additional padding, copy
766 of ethernet addresses, length of the standard RFC 1042 packet
767 and a command byte (which is nul for tx).
768
769 tx frame (from Wlan NG):
770 RFC 1042:
771 llc 0xAA 0xAA 0x03 (802.2 LLC)
772 snap 0x00 0x00 0x00 (Ethernet encapsulated)
773 type 2 bytes, Ethernet type field
774 payload (minus eth header)
775 Zydas specific:
776 padding 1B if (skb->len+8+1)%64==0
777 Eth MAC addr 12 bytes, Ethernet MAC addresses
778 length 2 bytes, RFC 1042 packet length
779 (llc+snap+type+payload)
780 zd 1 null byte, zd1201 packet type
781 */
782 static netdev_tx_t zd1201_hard_start_xmit(struct sk_buff *skb,
783 struct net_device *dev)
784 {
785 struct zd1201 *zd = netdev_priv(dev);
786 unsigned char *txbuf = zd->txdata;
787 int txbuflen, pad = 0, err;
788 struct urb *urb = zd->tx_urb;
789
790 if (!zd->mac_enabled || zd->monitor) {
791 dev->stats.tx_dropped++;
792 kfree_skb(skb);
793 return NETDEV_TX_OK;
794 }
795 netif_stop_queue(dev);
796
797 txbuflen = skb->len + 8 + 1;
798 if (txbuflen%64 == 0) {
799 pad = 1;
800 txbuflen++;
801 }
802 txbuf[0] = 0xAA;
803 txbuf[1] = 0xAA;
804 txbuf[2] = 0x03;
805 txbuf[3] = 0x00; /* rfc1042 */
806 txbuf[4] = 0x00;
807 txbuf[5] = 0x00;
808
809 skb_copy_from_linear_data_offset(skb, 12, txbuf + 6, skb->len - 12);
810 if (pad)
811 txbuf[skb->len-12+6]=0;
812 skb_copy_from_linear_data(skb, txbuf + skb->len - 12 + 6 + pad, 12);
813 *(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
814 txbuf[txbuflen-1] = 0;
815
816 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
817 txbuf, txbuflen, zd1201_usbtx, zd);
818
819 err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
820 if (err) {
821 dev->stats.tx_errors++;
822 netif_start_queue(dev);
823 } else {
824 dev->stats.tx_packets++;
825 dev->stats.tx_bytes += skb->len;
826 dev->trans_start = jiffies;
827 }
828 kfree_skb(skb);
829
830 return NETDEV_TX_OK;
831 }
832
833 static void zd1201_tx_timeout(struct net_device *dev)
834 {
835 struct zd1201 *zd = netdev_priv(dev);
836
837 if (!zd)
838 return;
839 dev_warn(&zd->usb->dev, "%s: TX timeout, shooting down urb\n",
840 dev->name);
841 usb_unlink_urb(zd->tx_urb);
842 dev->stats.tx_errors++;
843 /* Restart the timeout to quiet the watchdog: */
844 dev->trans_start = jiffies;
845 }
846
847 static int zd1201_set_mac_address(struct net_device *dev, void *p)
848 {
849 struct sockaddr *addr = p;
850 struct zd1201 *zd = netdev_priv(dev);
851 int err;
852
853 if (!zd)
854 return -ENODEV;
855
856 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
857 addr->sa_data, dev->addr_len, 1);
858 if (err)
859 return err;
860 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
861
862 return zd1201_mac_reset(zd);
863 }
864
865 static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
866 {
867 struct zd1201 *zd = netdev_priv(dev);
868
869 return &zd->iwstats;
870 }
871
872 static void zd1201_set_multicast(struct net_device *dev)
873 {
874 struct zd1201 *zd = netdev_priv(dev);
875 struct dev_mc_list *mc = dev->mc_list;
876 unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
877 int i;
878
879 if (dev->mc_count > ZD1201_MAXMULTI)
880 return;
881
882 for (i=0; i<dev->mc_count; i++) {
883 memcpy(reqbuf+i*ETH_ALEN, mc->dmi_addr, ETH_ALEN);
884 mc = mc->next;
885 }
886 zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
887 dev->mc_count*ETH_ALEN, 0);
888
889 }
890
891 static int zd1201_config_commit(struct net_device *dev,
892 struct iw_request_info *info, struct iw_point *data, char *essid)
893 {
894 struct zd1201 *zd = netdev_priv(dev);
895
896 return zd1201_mac_reset(zd);
897 }
898
899 static int zd1201_get_name(struct net_device *dev,
900 struct iw_request_info *info, char *name, char *extra)
901 {
902 strcpy(name, "IEEE 802.11b");
903 return 0;
904 }
905
906 static int zd1201_set_freq(struct net_device *dev,
907 struct iw_request_info *info, struct iw_freq *freq, char *extra)
908 {
909 struct zd1201 *zd = netdev_priv(dev);
910 short channel = 0;
911 int err;
912
913 if (freq->e == 0)
914 channel = freq->m;
915 else {
916 channel = ieee80211_freq_to_dsss_chan(freq->m);
917 if (channel < 0)
918 channel = 0;
919 }
920
921 err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
922 if (err)
923 return err;
924
925 zd1201_mac_reset(zd);
926
927 return 0;
928 }
929
930 static int zd1201_get_freq(struct net_device *dev,
931 struct iw_request_info *info, struct iw_freq *freq, char *extra)
932 {
933 struct zd1201 *zd = netdev_priv(dev);
934 short channel;
935 int err;
936
937 err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
938 if (err)
939 return err;
940 freq->e = 0;
941 freq->m = channel;
942
943 return 0;
944 }
945
946 static int zd1201_set_mode(struct net_device *dev,
947 struct iw_request_info *info, __u32 *mode, char *extra)
948 {
949 struct zd1201 *zd = netdev_priv(dev);
950 short porttype, monitor = 0;
951 unsigned char buffer[IW_ESSID_MAX_SIZE+2];
952 int err;
953
954 if (zd->ap) {
955 if (*mode != IW_MODE_MASTER)
956 return -EINVAL;
957 return 0;
958 }
959
960 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
961 if (err)
962 return err;
963 zd->dev->type = ARPHRD_ETHER;
964 switch(*mode) {
965 case IW_MODE_MONITOR:
966 monitor = 1;
967 zd->dev->type = ARPHRD_IEEE80211;
968 /* Make sure we are no longer associated with by
969 setting an 'impossible' essid.
970 (otherwise we mess up firmware)
971 */
972 zd1201_join(zd, "\0-*#\0", 5);
973 /* Put port in pIBSS */
974 case 8: /* No pseudo-IBSS in wireless extensions (yet) */
975 porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
976 break;
977 case IW_MODE_ADHOC:
978 porttype = ZD1201_PORTTYPE_IBSS;
979 break;
980 case IW_MODE_INFRA:
981 porttype = ZD1201_PORTTYPE_BSS;
982 break;
983 default:
984 return -EINVAL;
985 }
986
987 err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
988 if (err)
989 return err;
990 if (zd->monitor && !monitor) {
991 zd1201_disable(zd);
992 *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
993 memcpy(buffer+2, zd->essid, zd->essidlen);
994 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
995 buffer, IW_ESSID_MAX_SIZE+2, 1);
996 if (err)
997 return err;
998 }
999 zd->monitor = monitor;
1000 /* If monitor mode is set we don't actually turn it on here since it
1001 * is done during mac reset anyway (see zd1201_mac_enable).
1002 */
1003 zd1201_mac_reset(zd);
1004
1005 return 0;
1006 }
1007
1008 static int zd1201_get_mode(struct net_device *dev,
1009 struct iw_request_info *info, __u32 *mode, char *extra)
1010 {
1011 struct zd1201 *zd = netdev_priv(dev);
1012 short porttype;
1013 int err;
1014
1015 err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1016 if (err)
1017 return err;
1018 switch(porttype) {
1019 case ZD1201_PORTTYPE_IBSS:
1020 *mode = IW_MODE_ADHOC;
1021 break;
1022 case ZD1201_PORTTYPE_BSS:
1023 *mode = IW_MODE_INFRA;
1024 break;
1025 case ZD1201_PORTTYPE_WDS:
1026 *mode = IW_MODE_REPEAT;
1027 break;
1028 case ZD1201_PORTTYPE_PSEUDOIBSS:
1029 *mode = 8;/* No Pseudo-IBSS... */
1030 break;
1031 case ZD1201_PORTTYPE_AP:
1032 *mode = IW_MODE_MASTER;
1033 break;
1034 default:
1035 dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1036 porttype);
1037 *mode = IW_MODE_AUTO;
1038 }
1039 if (zd->monitor)
1040 *mode = IW_MODE_MONITOR;
1041
1042 return 0;
1043 }
1044
1045 static int zd1201_get_range(struct net_device *dev,
1046 struct iw_request_info *info, struct iw_point *wrq, char *extra)
1047 {
1048 struct iw_range *range = (struct iw_range *)extra;
1049
1050 wrq->length = sizeof(struct iw_range);
1051 memset(range, 0, sizeof(struct iw_range));
1052 range->we_version_compiled = WIRELESS_EXT;
1053 range->we_version_source = WIRELESS_EXT;
1054
1055 range->max_qual.qual = 128;
1056 range->max_qual.level = 128;
1057 range->max_qual.noise = 128;
1058 range->max_qual.updated = 7;
1059
1060 range->encoding_size[0] = 5;
1061 range->encoding_size[1] = 13;
1062 range->num_encoding_sizes = 2;
1063 range->max_encoding_tokens = ZD1201_NUMKEYS;
1064
1065 range->num_bitrates = 4;
1066 range->bitrate[0] = 1000000;
1067 range->bitrate[1] = 2000000;
1068 range->bitrate[2] = 5500000;
1069 range->bitrate[3] = 11000000;
1070
1071 range->min_rts = 0;
1072 range->min_frag = ZD1201_FRAGMIN;
1073 range->max_rts = ZD1201_RTSMAX;
1074 range->min_frag = ZD1201_FRAGMAX;
1075
1076 return 0;
1077 }
1078
1079 /* Little bit of magic here: we only get the quality if we poll
1080 * for it, and we never get an actual request to trigger such
1081 * a poll. Therefore we 'assume' that the user will soon ask for
1082 * the stats after asking the bssid.
1083 */
1084 static int zd1201_get_wap(struct net_device *dev,
1085 struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1086 {
1087 struct zd1201 *zd = netdev_priv(dev);
1088 unsigned char buffer[6];
1089
1090 if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1091 /* Unfortunately the quality and noise reported is useless.
1092 they seem to be accumulators that increase until you
1093 read them, unless we poll on a fixed interval we can't
1094 use them
1095 */
1096 /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1097 zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1098 /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1099 zd->iwstats.qual.updated = 2;
1100 }
1101
1102 return zd1201_getconfig(zd, ZD1201_RID_CURRENTBSSID, ap_addr->sa_data, 6);
1103 }
1104
1105 static int zd1201_set_scan(struct net_device *dev,
1106 struct iw_request_info *info, struct iw_point *srq, char *extra)
1107 {
1108 /* We do everything in get_scan */
1109 return 0;
1110 }
1111
1112 static int zd1201_get_scan(struct net_device *dev,
1113 struct iw_request_info *info, struct iw_point *srq, char *extra)
1114 {
1115 struct zd1201 *zd = netdev_priv(dev);
1116 int err, i, j, enabled_save;
1117 struct iw_event iwe;
1118 char *cev = extra;
1119 char *end_buf = extra + IW_SCAN_MAX_DATA;
1120
1121 /* No scanning in AP mode */
1122 if (zd->ap)
1123 return -EOPNOTSUPP;
1124
1125 /* Scan doesn't seem to work if disabled */
1126 enabled_save = zd->mac_enabled;
1127 zd1201_enable(zd);
1128
1129 zd->rxdatas = 0;
1130 err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE,
1131 ZD1201_INQ_SCANRESULTS, 0, 0);
1132 if (err)
1133 return err;
1134
1135 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1136 if (!zd->rxlen)
1137 return -EIO;
1138
1139 if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1140 return -EIO;
1141
1142 for(i=8; i<zd->rxlen; i+=62) {
1143 iwe.cmd = SIOCGIWAP;
1144 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1145 memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1146 cev = iwe_stream_add_event(info, cev, end_buf,
1147 &iwe, IW_EV_ADDR_LEN);
1148
1149 iwe.cmd = SIOCGIWESSID;
1150 iwe.u.data.length = zd->rxdata[i+16];
1151 iwe.u.data.flags = 1;
1152 cev = iwe_stream_add_point(info, cev, end_buf,
1153 &iwe, zd->rxdata+i+18);
1154
1155 iwe.cmd = SIOCGIWMODE;
1156 if (zd->rxdata[i+14]&0x01)
1157 iwe.u.mode = IW_MODE_MASTER;
1158 else
1159 iwe.u.mode = IW_MODE_ADHOC;
1160 cev = iwe_stream_add_event(info, cev, end_buf,
1161 &iwe, IW_EV_UINT_LEN);
1162
1163 iwe.cmd = SIOCGIWFREQ;
1164 iwe.u.freq.m = zd->rxdata[i+0];
1165 iwe.u.freq.e = 0;
1166 cev = iwe_stream_add_event(info, cev, end_buf,
1167 &iwe, IW_EV_FREQ_LEN);
1168
1169 iwe.cmd = SIOCGIWRATE;
1170 iwe.u.bitrate.fixed = 0;
1171 iwe.u.bitrate.disabled = 0;
1172 for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
1173 iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
1174 cev = iwe_stream_add_event(info, cev, end_buf,
1175 &iwe, IW_EV_PARAM_LEN);
1176 }
1177
1178 iwe.cmd = SIOCGIWENCODE;
1179 iwe.u.data.length = 0;
1180 if (zd->rxdata[i+14]&0x10)
1181 iwe.u.data.flags = IW_ENCODE_ENABLED;
1182 else
1183 iwe.u.data.flags = IW_ENCODE_DISABLED;
1184 cev = iwe_stream_add_point(info, cev, end_buf, &iwe, NULL);
1185
1186 iwe.cmd = IWEVQUAL;
1187 iwe.u.qual.qual = zd->rxdata[i+4];
1188 iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
1189 iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
1190 iwe.u.qual.updated = 7;
1191 cev = iwe_stream_add_event(info, cev, end_buf,
1192 &iwe, IW_EV_QUAL_LEN);
1193 }
1194
1195 if (!enabled_save)
1196 zd1201_disable(zd);
1197
1198 srq->length = cev - extra;
1199 srq->flags = 0;
1200
1201 return 0;
1202 }
1203
1204 static int zd1201_set_essid(struct net_device *dev,
1205 struct iw_request_info *info, struct iw_point *data, char *essid)
1206 {
1207 struct zd1201 *zd = netdev_priv(dev);
1208
1209 if (data->length > IW_ESSID_MAX_SIZE)
1210 return -EINVAL;
1211 if (data->length < 1)
1212 data->length = 1;
1213 zd->essidlen = data->length;
1214 memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1215 memcpy(zd->essid, essid, data->length);
1216 return zd1201_join(zd, zd->essid, zd->essidlen);
1217 }
1218
1219 static int zd1201_get_essid(struct net_device *dev,
1220 struct iw_request_info *info, struct iw_point *data, char *essid)
1221 {
1222 struct zd1201 *zd = netdev_priv(dev);
1223
1224 memcpy(essid, zd->essid, zd->essidlen);
1225 data->flags = 1;
1226 data->length = zd->essidlen;
1227
1228 return 0;
1229 }
1230
1231 static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1232 struct iw_point *data, char *nick)
1233 {
1234 strcpy(nick, "zd1201");
1235 data->flags = 1;
1236 data->length = strlen(nick);
1237 return 0;
1238 }
1239
1240 static int zd1201_set_rate(struct net_device *dev,
1241 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1242 {
1243 struct zd1201 *zd = netdev_priv(dev);
1244 short rate;
1245 int err;
1246
1247 switch (rrq->value) {
1248 case 1000000:
1249 rate = ZD1201_RATEB1;
1250 break;
1251 case 2000000:
1252 rate = ZD1201_RATEB2;
1253 break;
1254 case 5500000:
1255 rate = ZD1201_RATEB5;
1256 break;
1257 case 11000000:
1258 default:
1259 rate = ZD1201_RATEB11;
1260 break;
1261 }
1262 if (!rrq->fixed) { /* Also enable all lower bitrates */
1263 rate |= rate-1;
1264 }
1265
1266 err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1267 if (err)
1268 return err;
1269
1270 return zd1201_mac_reset(zd);
1271 }
1272
1273 static int zd1201_get_rate(struct net_device *dev,
1274 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1275 {
1276 struct zd1201 *zd = netdev_priv(dev);
1277 short rate;
1278 int err;
1279
1280 err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1281 if (err)
1282 return err;
1283
1284 switch(rate) {
1285 case 1:
1286 rrq->value = 1000000;
1287 break;
1288 case 2:
1289 rrq->value = 2000000;
1290 break;
1291 case 5:
1292 rrq->value = 5500000;
1293 break;
1294 case 11:
1295 rrq->value = 11000000;
1296 break;
1297 default:
1298 rrq->value = 0;
1299 }
1300 rrq->fixed = 0;
1301 rrq->disabled = 0;
1302
1303 return 0;
1304 }
1305
1306 static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1307 struct iw_param *rts, char *extra)
1308 {
1309 struct zd1201 *zd = netdev_priv(dev);
1310 int err;
1311 short val = rts->value;
1312
1313 if (rts->disabled || !rts->fixed)
1314 val = ZD1201_RTSMAX;
1315 if (val > ZD1201_RTSMAX)
1316 return -EINVAL;
1317 if (val < 0)
1318 return -EINVAL;
1319
1320 err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1321 if (err)
1322 return err;
1323 return zd1201_mac_reset(zd);
1324 }
1325
1326 static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1327 struct iw_param *rts, char *extra)
1328 {
1329 struct zd1201 *zd = netdev_priv(dev);
1330 short rtst;
1331 int err;
1332
1333 err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1334 if (err)
1335 return err;
1336 rts->value = rtst;
1337 rts->disabled = (rts->value == ZD1201_RTSMAX);
1338 rts->fixed = 1;
1339
1340 return 0;
1341 }
1342
1343 static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1344 struct iw_param *frag, char *extra)
1345 {
1346 struct zd1201 *zd = netdev_priv(dev);
1347 int err;
1348 short val = frag->value;
1349
1350 if (frag->disabled || !frag->fixed)
1351 val = ZD1201_FRAGMAX;
1352 if (val > ZD1201_FRAGMAX)
1353 return -EINVAL;
1354 if (val < ZD1201_FRAGMIN)
1355 return -EINVAL;
1356 if (val & 1)
1357 return -EINVAL;
1358 err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1359 if (err)
1360 return err;
1361 return zd1201_mac_reset(zd);
1362 }
1363
1364 static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1365 struct iw_param *frag, char *extra)
1366 {
1367 struct zd1201 *zd = netdev_priv(dev);
1368 short fragt;
1369 int err;
1370
1371 err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1372 if (err)
1373 return err;
1374 frag->value = fragt;
1375 frag->disabled = (frag->value == ZD1201_FRAGMAX);
1376 frag->fixed = 1;
1377
1378 return 0;
1379 }
1380
1381 static int zd1201_set_retry(struct net_device *dev,
1382 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1383 {
1384 return 0;
1385 }
1386
1387 static int zd1201_get_retry(struct net_device *dev,
1388 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1389 {
1390 return 0;
1391 }
1392
1393 static int zd1201_set_encode(struct net_device *dev,
1394 struct iw_request_info *info, struct iw_point *erq, char *key)
1395 {
1396 struct zd1201 *zd = netdev_priv(dev);
1397 short i;
1398 int err, rid;
1399
1400 if (erq->length > ZD1201_MAXKEYLEN)
1401 return -EINVAL;
1402
1403 i = (erq->flags & IW_ENCODE_INDEX)-1;
1404 if (i == -1) {
1405 err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1406 if (err)
1407 return err;
1408 } else {
1409 err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1410 if (err)
1411 return err;
1412 }
1413
1414 if (i < 0 || i >= ZD1201_NUMKEYS)
1415 return -EINVAL;
1416
1417 rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1418 err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1419 if (err)
1420 return err;
1421 zd->encode_keylen[i] = erq->length;
1422 memcpy(zd->encode_keys[i], key, erq->length);
1423
1424 i=0;
1425 if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1426 i |= 0x01;
1427 zd->encode_enabled = 1;
1428 } else
1429 zd->encode_enabled = 0;
1430 if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1431 i |= 0x02;
1432 zd->encode_restricted = 1;
1433 } else
1434 zd->encode_restricted = 0;
1435 err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1436 if (err)
1437 return err;
1438
1439 if (zd->encode_enabled)
1440 i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1441 else
1442 i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1443 err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1444 if (err)
1445 return err;
1446
1447 return zd1201_mac_reset(zd);
1448 }
1449
1450 static int zd1201_get_encode(struct net_device *dev,
1451 struct iw_request_info *info, struct iw_point *erq, char *key)
1452 {
1453 struct zd1201 *zd = netdev_priv(dev);
1454 short i;
1455 int err;
1456
1457 if (zd->encode_enabled)
1458 erq->flags = IW_ENCODE_ENABLED;
1459 else
1460 erq->flags = IW_ENCODE_DISABLED;
1461 if (zd->encode_restricted)
1462 erq->flags |= IW_ENCODE_RESTRICTED;
1463 else
1464 erq->flags |= IW_ENCODE_OPEN;
1465
1466 i = (erq->flags & IW_ENCODE_INDEX) -1;
1467 if (i == -1) {
1468 err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1469 if (err)
1470 return err;
1471 }
1472 if (i<0 || i>= ZD1201_NUMKEYS)
1473 return -EINVAL;
1474
1475 erq->flags |= i+1;
1476
1477 erq->length = zd->encode_keylen[i];
1478 memcpy(key, zd->encode_keys[i], erq->length);
1479
1480 return 0;
1481 }
1482
1483 static int zd1201_set_power(struct net_device *dev,
1484 struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1485 {
1486 struct zd1201 *zd = netdev_priv(dev);
1487 short enabled, duration, level;
1488 int err;
1489
1490 enabled = vwrq->disabled ? 0 : 1;
1491 if (enabled) {
1492 if (vwrq->flags & IW_POWER_PERIOD) {
1493 duration = vwrq->value;
1494 err = zd1201_setconfig16(zd,
1495 ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1496 if (err)
1497 return err;
1498 goto out;
1499 }
1500 if (vwrq->flags & IW_POWER_TIMEOUT) {
1501 err = zd1201_getconfig16(zd,
1502 ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1503 if (err)
1504 return err;
1505 level = vwrq->value * 4 / duration;
1506 if (level > 4)
1507 level = 4;
1508 if (level < 0)
1509 level = 0;
1510 err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1511 level);
1512 if (err)
1513 return err;
1514 goto out;
1515 }
1516 return -EINVAL;
1517 }
1518 out:
1519 return zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1520 }
1521
1522 static int zd1201_get_power(struct net_device *dev,
1523 struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1524 {
1525 struct zd1201 *zd = netdev_priv(dev);
1526 short enabled, level, duration;
1527 int err;
1528
1529 err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1530 if (err)
1531 return err;
1532 err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1533 if (err)
1534 return err;
1535 err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1536 if (err)
1537 return err;
1538 vwrq->disabled = enabled ? 0 : 1;
1539 if (vwrq->flags & IW_POWER_TYPE) {
1540 if (vwrq->flags & IW_POWER_PERIOD) {
1541 vwrq->value = duration;
1542 vwrq->flags = IW_POWER_PERIOD;
1543 } else {
1544 vwrq->value = duration * level / 4;
1545 vwrq->flags = IW_POWER_TIMEOUT;
1546 }
1547 }
1548 if (vwrq->flags & IW_POWER_MODE) {
1549 if (enabled && level)
1550 vwrq->flags = IW_POWER_UNICAST_R;
1551 else
1552 vwrq->flags = IW_POWER_ALL_R;
1553 }
1554
1555 return 0;
1556 }
1557
1558
1559 static const iw_handler zd1201_iw_handler[] =
1560 {
1561 (iw_handler) zd1201_config_commit, /* SIOCSIWCOMMIT */
1562 (iw_handler) zd1201_get_name, /* SIOCGIWNAME */
1563 (iw_handler) NULL, /* SIOCSIWNWID */
1564 (iw_handler) NULL, /* SIOCGIWNWID */
1565 (iw_handler) zd1201_set_freq, /* SIOCSIWFREQ */
1566 (iw_handler) zd1201_get_freq, /* SIOCGIWFREQ */
1567 (iw_handler) zd1201_set_mode, /* SIOCSIWMODE */
1568 (iw_handler) zd1201_get_mode, /* SIOCGIWMODE */
1569 (iw_handler) NULL, /* SIOCSIWSENS */
1570 (iw_handler) NULL, /* SIOCGIWSENS */
1571 (iw_handler) NULL, /* SIOCSIWRANGE */
1572 (iw_handler) zd1201_get_range, /* SIOCGIWRANGE */
1573 (iw_handler) NULL, /* SIOCSIWPRIV */
1574 (iw_handler) NULL, /* SIOCGIWPRIV */
1575 (iw_handler) NULL, /* SIOCSIWSTATS */
1576 (iw_handler) NULL, /* SIOCGIWSTATS */
1577 (iw_handler) NULL, /* SIOCSIWSPY */
1578 (iw_handler) NULL, /* SIOCGIWSPY */
1579 (iw_handler) NULL, /* -- hole -- */
1580 (iw_handler) NULL, /* -- hole -- */
1581 (iw_handler) NULL/*zd1201_set_wap*/, /* SIOCSIWAP */
1582 (iw_handler) zd1201_get_wap, /* SIOCGIWAP */
1583 (iw_handler) NULL, /* -- hole -- */
1584 (iw_handler) NULL, /* SIOCGIWAPLIST */
1585 (iw_handler) zd1201_set_scan, /* SIOCSIWSCAN */
1586 (iw_handler) zd1201_get_scan, /* SIOCGIWSCAN */
1587 (iw_handler) zd1201_set_essid, /* SIOCSIWESSID */
1588 (iw_handler) zd1201_get_essid, /* SIOCGIWESSID */
1589 (iw_handler) NULL, /* SIOCSIWNICKN */
1590 (iw_handler) zd1201_get_nick, /* SIOCGIWNICKN */
1591 (iw_handler) NULL, /* -- hole -- */
1592 (iw_handler) NULL, /* -- hole -- */
1593 (iw_handler) zd1201_set_rate, /* SIOCSIWRATE */
1594 (iw_handler) zd1201_get_rate, /* SIOCGIWRATE */
1595 (iw_handler) zd1201_set_rts, /* SIOCSIWRTS */
1596 (iw_handler) zd1201_get_rts, /* SIOCGIWRTS */
1597 (iw_handler) zd1201_set_frag, /* SIOCSIWFRAG */
1598 (iw_handler) zd1201_get_frag, /* SIOCGIWFRAG */
1599 (iw_handler) NULL, /* SIOCSIWTXPOW */
1600 (iw_handler) NULL, /* SIOCGIWTXPOW */
1601 (iw_handler) zd1201_set_retry, /* SIOCSIWRETRY */
1602 (iw_handler) zd1201_get_retry, /* SIOCGIWRETRY */
1603 (iw_handler) zd1201_set_encode, /* SIOCSIWENCODE */
1604 (iw_handler) zd1201_get_encode, /* SIOCGIWENCODE */
1605 (iw_handler) zd1201_set_power, /* SIOCSIWPOWER */
1606 (iw_handler) zd1201_get_power, /* SIOCGIWPOWER */
1607 };
1608
1609 static int zd1201_set_hostauth(struct net_device *dev,
1610 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1611 {
1612 struct zd1201 *zd = netdev_priv(dev);
1613
1614 if (!zd->ap)
1615 return -EOPNOTSUPP;
1616
1617 return zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1618 }
1619
1620 static int zd1201_get_hostauth(struct net_device *dev,
1621 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1622 {
1623 struct zd1201 *zd = netdev_priv(dev);
1624 short hostauth;
1625 int err;
1626
1627 if (!zd->ap)
1628 return -EOPNOTSUPP;
1629
1630 err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1631 if (err)
1632 return err;
1633 rrq->value = hostauth;
1634 rrq->fixed = 1;
1635
1636 return 0;
1637 }
1638
1639 static int zd1201_auth_sta(struct net_device *dev,
1640 struct iw_request_info *info, struct sockaddr *sta, char *extra)
1641 {
1642 struct zd1201 *zd = netdev_priv(dev);
1643 unsigned char buffer[10];
1644
1645 if (!zd->ap)
1646 return -EOPNOTSUPP;
1647
1648 memcpy(buffer, sta->sa_data, ETH_ALEN);
1649 *(short*)(buffer+6) = 0; /* 0==success, 1==failure */
1650 *(short*)(buffer+8) = 0;
1651
1652 return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1653 }
1654
1655 static int zd1201_set_maxassoc(struct net_device *dev,
1656 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1657 {
1658 struct zd1201 *zd = netdev_priv(dev);
1659 int err;
1660
1661 if (!zd->ap)
1662 return -EOPNOTSUPP;
1663
1664 err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1665 if (err)
1666 return err;
1667 return 0;
1668 }
1669
1670 static int zd1201_get_maxassoc(struct net_device *dev,
1671 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1672 {
1673 struct zd1201 *zd = netdev_priv(dev);
1674 short maxassoc;
1675 int err;
1676
1677 if (!zd->ap)
1678 return -EOPNOTSUPP;
1679
1680 err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1681 if (err)
1682 return err;
1683 rrq->value = maxassoc;
1684 rrq->fixed = 1;
1685
1686 return 0;
1687 }
1688
1689 static const iw_handler zd1201_private_handler[] = {
1690 (iw_handler) zd1201_set_hostauth, /* ZD1201SIWHOSTAUTH */
1691 (iw_handler) zd1201_get_hostauth, /* ZD1201GIWHOSTAUTH */
1692 (iw_handler) zd1201_auth_sta, /* ZD1201SIWAUTHSTA */
1693 (iw_handler) NULL, /* nothing to get */
1694 (iw_handler) zd1201_set_maxassoc, /* ZD1201SIMAXASSOC */
1695 (iw_handler) zd1201_get_maxassoc, /* ZD1201GIMAXASSOC */
1696 };
1697
1698 static const struct iw_priv_args zd1201_private_args[] = {
1699 { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1700 IW_PRIV_TYPE_NONE, "sethostauth" },
1701 { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1702 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1703 { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1704 IW_PRIV_TYPE_NONE, "authstation" },
1705 { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1706 IW_PRIV_TYPE_NONE, "setmaxassoc" },
1707 { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1708 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1709 };
1710
1711 static const struct iw_handler_def zd1201_iw_handlers = {
1712 .num_standard = ARRAY_SIZE(zd1201_iw_handler),
1713 .num_private = ARRAY_SIZE(zd1201_private_handler),
1714 .num_private_args = ARRAY_SIZE(zd1201_private_args),
1715 .standard = (iw_handler *)zd1201_iw_handler,
1716 .private = (iw_handler *)zd1201_private_handler,
1717 .private_args = (struct iw_priv_args *) zd1201_private_args,
1718 .get_wireless_stats = zd1201_get_wireless_stats,
1719 };
1720
1721 static const struct net_device_ops zd1201_netdev_ops = {
1722 .ndo_open = zd1201_net_open,
1723 .ndo_stop = zd1201_net_stop,
1724 .ndo_start_xmit = zd1201_hard_start_xmit,
1725 .ndo_tx_timeout = zd1201_tx_timeout,
1726 .ndo_set_multicast_list = zd1201_set_multicast,
1727 .ndo_set_mac_address = zd1201_set_mac_address,
1728 .ndo_change_mtu = eth_change_mtu,
1729 .ndo_validate_addr = eth_validate_addr,
1730 };
1731
1732 static int zd1201_probe(struct usb_interface *interface,
1733 const struct usb_device_id *id)
1734 {
1735 struct zd1201 *zd;
1736 struct net_device *dev;
1737 struct usb_device *usb;
1738 int err;
1739 short porttype;
1740 char buf[IW_ESSID_MAX_SIZE+2];
1741
1742 usb = interface_to_usbdev(interface);
1743
1744 dev = alloc_etherdev(sizeof(*zd));
1745 if (!dev)
1746 return -ENOMEM;
1747 zd = netdev_priv(dev);
1748 zd->dev = dev;
1749
1750 zd->ap = ap;
1751 zd->usb = usb;
1752 zd->removed = 0;
1753 init_waitqueue_head(&zd->rxdataq);
1754 INIT_HLIST_HEAD(&zd->fraglist);
1755
1756 err = zd1201_fw_upload(usb, zd->ap);
1757 if (err) {
1758 dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
1759 goto err_zd;
1760 }
1761
1762 zd->endp_in = 1;
1763 zd->endp_out = 1;
1764 zd->endp_out2 = 2;
1765 zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1766 zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1767 if (!zd->rx_urb || !zd->tx_urb)
1768 goto err_zd;
1769
1770 mdelay(100);
1771 err = zd1201_drvr_start(zd);
1772 if (err)
1773 goto err_zd;
1774
1775 err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
1776 if (err)
1777 goto err_start;
1778
1779 err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
1780 ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
1781 if (err)
1782 goto err_start;
1783
1784 dev->netdev_ops = &zd1201_netdev_ops;
1785 dev->wireless_handlers = &zd1201_iw_handlers;
1786 dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
1787 strcpy(dev->name, "wlan%d");
1788
1789 err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR,
1790 dev->dev_addr, dev->addr_len);
1791 if (err)
1792 goto err_start;
1793
1794 /* Set wildcard essid to match zd->essid */
1795 *(__le16 *)buf = cpu_to_le16(0);
1796 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
1797 IW_ESSID_MAX_SIZE+2, 1);
1798 if (err)
1799 goto err_start;
1800
1801 if (zd->ap)
1802 porttype = ZD1201_PORTTYPE_AP;
1803 else
1804 porttype = ZD1201_PORTTYPE_BSS;
1805 err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1806 if (err)
1807 goto err_start;
1808
1809 SET_NETDEV_DEV(dev, &usb->dev);
1810
1811 err = register_netdev(dev);
1812 if (err)
1813 goto err_start;
1814 dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
1815 dev->name);
1816
1817 usb_set_intfdata(interface, zd);
1818 zd1201_enable(zd); /* zd1201 likes to startup enabled, */
1819 zd1201_disable(zd); /* interfering with all the wifis in range */
1820 return 0;
1821
1822 err_start:
1823 /* Leave the device in reset state */
1824 zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
1825 err_zd:
1826 usb_free_urb(zd->tx_urb);
1827 usb_free_urb(zd->rx_urb);
1828 free_netdev(dev);
1829 return err;
1830 }
1831
1832 static void zd1201_disconnect(struct usb_interface *interface)
1833 {
1834 struct zd1201 *zd=(struct zd1201 *)usb_get_intfdata(interface);
1835 struct hlist_node *node, *node2;
1836 struct zd1201_frag *frag;
1837
1838 if (!zd)
1839 return;
1840 usb_set_intfdata(interface, NULL);
1841
1842 hlist_for_each_entry_safe(frag, node, node2, &zd->fraglist, fnode) {
1843 hlist_del_init(&frag->fnode);
1844 kfree_skb(frag->skb);
1845 kfree(frag);
1846 }
1847
1848 if (zd->tx_urb) {
1849 usb_kill_urb(zd->tx_urb);
1850 usb_free_urb(zd->tx_urb);
1851 }
1852 if (zd->rx_urb) {
1853 usb_kill_urb(zd->rx_urb);
1854 usb_free_urb(zd->rx_urb);
1855 }
1856
1857 if (zd->dev) {
1858 unregister_netdev(zd->dev);
1859 free_netdev(zd->dev);
1860 }
1861 }
1862
1863 #ifdef CONFIG_PM
1864
1865 static int zd1201_suspend(struct usb_interface *interface,
1866 pm_message_t message)
1867 {
1868 struct zd1201 *zd = usb_get_intfdata(interface);
1869
1870 netif_device_detach(zd->dev);
1871
1872 zd->was_enabled = zd->mac_enabled;
1873
1874 if (zd->was_enabled)
1875 return zd1201_disable(zd);
1876 else
1877 return 0;
1878 }
1879
1880 static int zd1201_resume(struct usb_interface *interface)
1881 {
1882 struct zd1201 *zd = usb_get_intfdata(interface);
1883
1884 if (!zd || !zd->dev)
1885 return -ENODEV;
1886
1887 netif_device_attach(zd->dev);
1888
1889 if (zd->was_enabled)
1890 return zd1201_enable(zd);
1891 else
1892 return 0;
1893 }
1894
1895 #else
1896
1897 #define zd1201_suspend NULL
1898 #define zd1201_resume NULL
1899
1900 #endif
1901
1902 static struct usb_driver zd1201_usb = {
1903 .name = "zd1201",
1904 .probe = zd1201_probe,
1905 .disconnect = zd1201_disconnect,
1906 .id_table = zd1201_table,
1907 .suspend = zd1201_suspend,
1908 .resume = zd1201_resume,
1909 };
1910
1911 static int __init zd1201_init(void)
1912 {
1913 return usb_register(&zd1201_usb);
1914 }
1915
1916 static void __exit zd1201_cleanup(void)
1917 {
1918 usb_deregister(&zd1201_usb);
1919 }
1920
1921 module_init(zd1201_init);
1922 module_exit(zd1201_cleanup);
Linux with added FPC-III support