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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / net / wireless / zydas / zd1201.c
blob41641fc2be7437afa6dc05fd84e4f1fcc69e13a2
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Driver for ZyDAS zd1201 based wireless USB devices.
4 *
5 * Copyright (c) 2004, 2005 Jeroen Vreeken (pe1rxq@amsat.org)
6 *
7 * Parts of this driver have been derived from a wlan-ng version
8 * modified by ZyDAS. They also made documentation available, thanks!
9 * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
10 */
11
12 #include <linux/module.h>
13 #include <linux/usb.h>
14 #include <linux/slab.h>
15 #include <linux/netdevice.h>
16 #include <linux/etherdevice.h>
17 #include <linux/wireless.h>
18 #include <net/cfg80211.h>
19 #include <net/iw_handler.h>
20 #include <linux/string.h>
21 #include <linux/if_arp.h>
22 #include <linux/firmware.h>
23 #include "zd1201.h"
24
25 static const struct usb_device_id zd1201_table[] = {
26 {USB_DEVICE(0x0586, 0x3400)}, /* Peabird Wireless USB Adapter */
27 {USB_DEVICE(0x0ace, 0x1201)}, /* ZyDAS ZD1201 Wireless USB Adapter */
28 {USB_DEVICE(0x050d, 0x6051)}, /* Belkin F5D6051 usb adapter */
29 {USB_DEVICE(0x0db0, 0x6823)}, /* MSI UB11B usb adapter */
30 {USB_DEVICE(0x1044, 0x8004)}, /* Gigabyte GN-WLBZ101 */
31 {USB_DEVICE(0x1044, 0x8005)}, /* GIGABYTE GN-WLBZ201 usb adapter */
32 {}
33 };
34
35 static int ap; /* Are we an AP or a normal station? */
36
37 #define ZD1201_VERSION "0.15"
38
39 MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>");
40 MODULE_DESCRIPTION("Driver for ZyDAS ZD1201 based USB Wireless adapters");
41 MODULE_VERSION(ZD1201_VERSION);
42 MODULE_LICENSE("GPL");
43 module_param(ap, int, 0);
44 MODULE_PARM_DESC(ap, "If non-zero Access Point firmware will be loaded");
45 MODULE_DEVICE_TABLE(usb, zd1201_table);
46
47
48 static int zd1201_fw_upload(struct usb_device *dev, int apfw)
49 {
50 const struct firmware *fw_entry;
51 const char *data;
52 unsigned long len;
53 int err;
54 unsigned char ret;
55 char *buf;
56 char *fwfile;
57
58 if (apfw)
59 fwfile = "zd1201-ap.fw";
60 else
61 fwfile = "zd1201.fw";
62
63 err = request_firmware(&fw_entry, fwfile, &dev->dev);
64 if (err) {
65 dev_err(&dev->dev, "Failed to load %s firmware file!\n", fwfile);
66 dev_err(&dev->dev, "Make sure the hotplug firmware loader is installed.\n");
67 dev_err(&dev->dev, "Goto http://linux-lc100020.sourceforge.net for more info.\n");
68 return err;
69 }
70
71 data = fw_entry->data;
72 len = fw_entry->size;
73
74 buf = kmalloc(1024, GFP_ATOMIC);
75 if (!buf) {
76 err = -ENOMEM;
77 goto exit;
78 }
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, buf, sizeof(ret), ZD1201_FW_TIMEOUT);
101 if (err < 0)
102 goto exit;
103
104 memcpy(&ret, buf, sizeof(ret));
105
106 if (ret & 0x80) {
107 err = -EIO;
108 goto exit;
109 }
110
111 err = 0;
112 exit:
113 kfree(buf);
114 release_firmware(fw_entry);
115 return err;
116 }
117
118 MODULE_FIRMWARE("zd1201-ap.fw");
119 MODULE_FIRMWARE("zd1201.fw");
120
121 static void zd1201_usbfree(struct urb *urb)
122 {
123 struct zd1201 *zd = urb->context;
124
125 switch(urb->status) {
126 case -EILSEQ:
127 case -ENODEV:
128 case -ETIME:
129 case -ENOENT:
130 case -EPIPE:
131 case -EOVERFLOW:
132 case -ESHUTDOWN:
133 dev_warn(&zd->usb->dev, "%s: urb failed: %d\n",
134 zd->dev->name, urb->status);
135 }
136
137 kfree(urb->transfer_buffer);
138 usb_free_urb(urb);
139 }
140
141 /* cmdreq message:
142 u32 type
143 u16 cmd
144 u16 parm0
145 u16 parm1
146 u16 parm2
147 u8 pad[4]
148
149 total: 4 + 2 + 2 + 2 + 2 + 4 = 16
150 */
151 static int zd1201_docmd(struct zd1201 *zd, int cmd, int parm0,
152 int parm1, int parm2)
153 {
154 unsigned char *command;
155 int ret;
156 struct urb *urb;
157
158 command = kmalloc(16, GFP_ATOMIC);
159 if (!command)
160 return -ENOMEM;
161
162 *((__le32*)command) = cpu_to_le32(ZD1201_USB_CMDREQ);
163 *((__le16*)&command[4]) = cpu_to_le16(cmd);
164 *((__le16*)&command[6]) = cpu_to_le16(parm0);
165 *((__le16*)&command[8]) = cpu_to_le16(parm1);
166 *((__le16*)&command[10])= cpu_to_le16(parm2);
167
168 urb = usb_alloc_urb(0, GFP_ATOMIC);
169 if (!urb) {
170 kfree(command);
171 return -ENOMEM;
172 }
173 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
174 command, 16, zd1201_usbfree, zd);
175 ret = usb_submit_urb(urb, GFP_ATOMIC);
176 if (ret) {
177 kfree(command);
178 usb_free_urb(urb);
179 }
180
181 return ret;
182 }
183
184 /* Callback after sending out a packet */
185 static void zd1201_usbtx(struct urb *urb)
186 {
187 struct zd1201 *zd = urb->context;
188 netif_wake_queue(zd->dev);
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, copylen;
231 infotype = le16_to_cpu(*(__le16*)&data[6]);
232
233 if (infotype == ZD1201_INF_LINKSTATUS) {
234 short linkstatus;
235
236 linkstatus = le16_to_cpu(*(__le16*)&data[8]);
237 switch(linkstatus) {
238 case 1:
239 netif_carrier_on(zd->dev);
240 break;
241 case 2:
242 netif_carrier_off(zd->dev);
243 break;
244 case 3:
245 netif_carrier_off(zd->dev);
246 break;
247 case 4:
248 netif_carrier_on(zd->dev);
249 break;
250 default:
251 netif_carrier_off(zd->dev);
252 }
253 goto resubmit;
254 }
255 if (infotype == ZD1201_INF_ASSOCSTATUS) {
256 short status = le16_to_cpu(*(__le16*)(data+8));
257 int event;
258 union iwreq_data wrqu;
259
260 switch (status) {
261 case ZD1201_ASSOCSTATUS_STAASSOC:
262 case ZD1201_ASSOCSTATUS_REASSOC:
263 event = IWEVREGISTERED;
264 break;
265 case ZD1201_ASSOCSTATUS_DISASSOC:
266 case ZD1201_ASSOCSTATUS_ASSOCFAIL:
267 case ZD1201_ASSOCSTATUS_AUTHFAIL:
268 default:
269 event = IWEVEXPIRED;
270 }
271 memcpy(wrqu.addr.sa_data, data+10, ETH_ALEN);
272 wrqu.addr.sa_family = ARPHRD_ETHER;
273
274 /* Send event to user space */
275 wireless_send_event(zd->dev, event, &wrqu, NULL);
276
277 goto resubmit;
278 }
279 if (infotype == ZD1201_INF_AUTHREQ) {
280 union iwreq_data wrqu;
281
282 memcpy(wrqu.addr.sa_data, data+8, ETH_ALEN);
283 wrqu.addr.sa_family = ARPHRD_ETHER;
284 /* There isn't a event that trully fits this request.
285 We assume that userspace will be smart enough to
286 see a new station being expired and sends back a
287 authstation ioctl to authorize it. */
288 wireless_send_event(zd->dev, IWEVEXPIRED, &wrqu, NULL);
289 goto resubmit;
290 }
291 /* Other infotypes are handled outside this handler */
292 zd->rxlen = 0;
293 while (i < urb->actual_length) {
294 copylen = le16_to_cpu(*(__le16*)&data[i+2]);
295 /* Sanity check, sometimes we get junk */
296 if (copylen+zd->rxlen > sizeof(zd->rxdata))
297 break;
298 memcpy(zd->rxdata+zd->rxlen, data+i+4, copylen);
299 zd->rxlen += copylen;
300 i += 64;
301 }
302 if (i >= urb->actual_length) {
303 zd->rxdatas = 1;
304 wake_up(&zd->rxdataq);
305 }
306 goto resubmit;
307 }
308 /* Actual data */
309 if (data[urb->actual_length-1] == ZD1201_PACKET_RXDATA) {
310 int datalen = urb->actual_length-1;
311 unsigned short len, fc, seq;
312
313 len = ntohs(*(__be16 *)&data[datalen-2]);
314 if (len>datalen)
315 len=datalen;
316 fc = le16_to_cpu(*(__le16 *)&data[datalen-16]);
317 seq = le16_to_cpu(*(__le16 *)&data[datalen-24]);
318
319 if (zd->monitor) {
320 if (datalen < 24)
321 goto resubmit;
322 if (!(skb = dev_alloc_skb(datalen+24)))
323 goto resubmit;
324
325 skb_put_data(skb, &data[datalen - 16], 2);
326 skb_put_data(skb, &data[datalen - 2], 2);
327 skb_put_data(skb, &data[datalen - 14], 6);
328 skb_put_data(skb, &data[datalen - 22], 6);
329 skb_put_data(skb, &data[datalen - 8], 6);
330 skb_put_data(skb, &data[datalen - 24], 2);
331 skb_put_data(skb, data, len);
332 skb->protocol = eth_type_trans(skb, zd->dev);
333 zd->dev->stats.rx_packets++;
334 zd->dev->stats.rx_bytes += skb->len;
335 netif_rx(skb);
336 goto resubmit;
337 }
338
339 if ((seq & IEEE80211_SCTL_FRAG) ||
340 (fc & IEEE80211_FCTL_MOREFRAGS)) {
341 struct zd1201_frag *frag = NULL;
342 char *ptr;
343
344 if (datalen<14)
345 goto resubmit;
346 if ((seq & IEEE80211_SCTL_FRAG) == 0) {
347 frag = kmalloc(sizeof(*frag), GFP_ATOMIC);
348 if (!frag)
349 goto resubmit;
350 skb = dev_alloc_skb(IEEE80211_MAX_DATA_LEN +14+2);
351 if (!skb) {
352 kfree(frag);
353 goto resubmit;
354 }
355 frag->skb = skb;
356 frag->seq = seq & IEEE80211_SCTL_SEQ;
357 skb_reserve(skb, 2);
358 skb_put_data(skb, &data[datalen - 14], 12);
359 skb_put_data(skb, &data[6], 2);
360 skb_put_data(skb, data + 8, len);
361 hlist_add_head(&frag->fnode, &zd->fraglist);
362 goto resubmit;
363 }
364 hlist_for_each_entry(frag, &zd->fraglist, fnode)
365 if (frag->seq == (seq&IEEE80211_SCTL_SEQ))
366 break;
367 if (!frag)
368 goto resubmit;
369 skb = frag->skb;
370 ptr = skb_put(skb, len);
371 if (ptr)
372 memcpy(ptr, data+8, len);
373 if (fc & IEEE80211_FCTL_MOREFRAGS)
374 goto resubmit;
375 hlist_del_init(&frag->fnode);
376 kfree(frag);
377 } else {
378 if (datalen<14)
379 goto resubmit;
380 skb = dev_alloc_skb(len + 14 + 2);
381 if (!skb)
382 goto resubmit;
383 skb_reserve(skb, 2);
384 skb_put_data(skb, &data[datalen - 14], 12);
385 skb_put_data(skb, &data[6], 2);
386 skb_put_data(skb, data + 8, len);
387 }
388 skb->protocol = eth_type_trans(skb, zd->dev);
389 zd->dev->stats.rx_packets++;
390 zd->dev->stats.rx_bytes += skb->len;
391 netif_rx(skb);
392 }
393 resubmit:
394 memset(data, 0, ZD1201_RXSIZE);
395
396 urb->status = 0;
397 urb->dev = zd->usb;
398 if(usb_submit_urb(urb, GFP_ATOMIC))
399 free = 1;
400
401 exit:
402 if (free) {
403 zd->rxlen = 0;
404 zd->rxdatas = 1;
405 wake_up(&zd->rxdataq);
406 kfree(urb->transfer_buffer);
407 }
408 }
409
410 static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
411 unsigned int riddatalen)
412 {
413 int err;
414 int i = 0;
415 int code;
416 int rid_fid;
417 int length;
418 unsigned char *pdata;
419
420 zd->rxdatas = 0;
421 err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
422 if (err)
423 return err;
424
425 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
426 if (!zd->rxlen)
427 return -EIO;
428
429 code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
430 rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
431 length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
432 if (length > zd->rxlen)
433 length = zd->rxlen-6;
434
435 /* If access bit is not on, then error */
436 if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
437 return -EINVAL;
438
439 /* Not enough buffer for allocating data */
440 if (riddatalen != (length - 4)) {
441 dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
442 riddatalen, zd->rxlen, length, rid, rid_fid);
443 return -ENODATA;
444 }
445
446 zd->rxdatas = 0;
447 /* Issue SetRxRid commnd */
448 err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
449 if (err)
450 return err;
451
452 /* Receive RID record from resource packets */
453 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
454 if (!zd->rxlen)
455 return -EIO;
456
457 if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
458 dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
459 zd->rxdata[zd->rxlen-1]);
460 return -EINVAL;
461 }
462
463 /* Set the data pointer and received data length */
464 pdata = zd->rxdata;
465 length = zd->rxlen;
466
467 do {
468 int actual_length;
469
470 actual_length = (length > 64) ? 64 : length;
471
472 if (pdata[0] != 0x3) {
473 dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
474 pdata[0]);
475 return -EINVAL;
476 }
477
478 if (actual_length != 64) {
479 /* Trim the last packet type byte */
480 actual_length--;
481 }
482
483 /* Skip the 4 bytes header (RID length and RID) */
484 if (i == 0) {
485 pdata += 8;
486 actual_length -= 8;
487 } else {
488 pdata += 4;
489 actual_length -= 4;
490 }
491
492 memcpy(riddata, pdata, actual_length);
493 riddata += actual_length;
494 pdata += actual_length;
495 length -= 64;
496 i++;
497 } while (length > 0);
498
499 return 0;
500 }
501
502 /*
503 * resreq:
504 * byte type
505 * byte sequence
506 * u16 reserved
507 * byte data[12]
508 * total: 16
509 */
510 static int zd1201_setconfig(struct zd1201 *zd, int rid, void *buf, int len, int wait)
511 {
512 int err;
513 unsigned char *request;
514 int reqlen;
515 char seq=0;
516 struct urb *urb;
517 gfp_t gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
518
519 len += 4; /* first 4 are for header */
520
521 zd->rxdatas = 0;
522 zd->rxlen = 0;
523 for (seq=0; len > 0; seq++) {
524 request = kmalloc(16, gfp_mask);
525 if (!request)
526 return -ENOMEM;
527 urb = usb_alloc_urb(0, gfp_mask);
528 if (!urb) {
529 kfree(request);
530 return -ENOMEM;
531 }
532 memset(request, 0, 16);
533 reqlen = len>12 ? 12 : len;
534 request[0] = ZD1201_USB_RESREQ;
535 request[1] = seq;
536 request[2] = 0;
537 request[3] = 0;
538 if (request[1] == 0) {
539 /* add header */
540 *(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
541 *(__le16*)&request[6] = cpu_to_le16(rid);
542 memcpy(request+8, buf, reqlen-4);
543 buf += reqlen-4;
544 } else {
545 memcpy(request+4, buf, reqlen);
546 buf += reqlen;
547 }
548
549 len -= reqlen;
550
551 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
552 zd->endp_out2), request, 16, zd1201_usbfree, zd);
553 err = usb_submit_urb(urb, gfp_mask);
554 if (err)
555 goto err;
556 }
557
558 request = kmalloc(16, gfp_mask);
559 if (!request)
560 return -ENOMEM;
561 urb = usb_alloc_urb(0, gfp_mask);
562 if (!urb) {
563 kfree(request);
564 return -ENOMEM;
565 }
566 *((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
567 *((__le16*)&request[4]) =
568 cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
569 *((__le16*)&request[6]) = cpu_to_le16(rid);
570 *((__le16*)&request[8]) = cpu_to_le16(0);
571 *((__le16*)&request[10]) = cpu_to_le16(0);
572 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
573 request, 16, zd1201_usbfree, zd);
574 err = usb_submit_urb(urb, gfp_mask);
575 if (err)
576 goto err;
577
578 if (wait) {
579 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
580 if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
581 dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
582 }
583 }
584
585 return 0;
586 err:
587 kfree(request);
588 usb_free_urb(urb);
589 return err;
590 }
591
592 static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
593 {
594 int err;
595 __le16 zdval;
596
597 err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
598 if (err)
599 return err;
600 *val = le16_to_cpu(zdval);
601 return 0;
602 }
603
604 static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
605 {
606 __le16 zdval = cpu_to_le16(val);
607 return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
608 }
609
610 static int zd1201_drvr_start(struct zd1201 *zd)
611 {
612 int err, i;
613 short max;
614 __le16 zdmax;
615 unsigned char *buffer;
616
617 buffer = kzalloc(ZD1201_RXSIZE, GFP_KERNEL);
618 if (!buffer)
619 return -ENOMEM;
620
621 usb_fill_bulk_urb(zd->rx_urb, zd->usb,
622 usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
623 zd1201_usbrx, zd);
624
625 err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
626 if (err)
627 goto err_buffer;
628
629 err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
630 if (err)
631 goto err_urb;
632
633 err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
634 sizeof(__le16));
635 if (err)
636 goto err_urb;
637
638 max = le16_to_cpu(zdmax);
639 for (i=0; i<max; i++) {
640 err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
641 if (err)
642 goto err_urb;
643 }
644
645 return 0;
646
647 err_urb:
648 usb_kill_urb(zd->rx_urb);
649 return err;
650 err_buffer:
651 kfree(buffer);
652 return err;
653 }
654
655 /* Magic alert: The firmware doesn't seem to like the MAC state being
656 * toggled in promisc (aka monitor) mode.
657 * (It works a number of times, but will halt eventually)
658 * So we turn it of before disabling and on after enabling if needed.
659 */
660 static int zd1201_enable(struct zd1201 *zd)
661 {
662 int err;
663
664 if (zd->mac_enabled)
665 return 0;
666
667 err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
668 if (!err)
669 zd->mac_enabled = 1;
670
671 if (zd->monitor)
672 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
673
674 return err;
675 }
676
677 static int zd1201_disable(struct zd1201 *zd)
678 {
679 int err;
680
681 if (!zd->mac_enabled)
682 return 0;
683 if (zd->monitor) {
684 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
685 if (err)
686 return err;
687 }
688
689 err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
690 if (!err)
691 zd->mac_enabled = 0;
692 return err;
693 }
694
695 static int zd1201_mac_reset(struct zd1201 *zd)
696 {
697 if (!zd->mac_enabled)
698 return 0;
699 zd1201_disable(zd);
700 return zd1201_enable(zd);
701 }
702
703 static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
704 {
705 int err, val;
706 char buf[IW_ESSID_MAX_SIZE+2];
707
708 err = zd1201_disable(zd);
709 if (err)
710 return err;
711
712 val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
713 val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
714 err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
715 if (err)
716 return err;
717
718 *(__le16 *)buf = cpu_to_le16(essidlen);
719 memcpy(buf+2, essid, essidlen);
720 if (!zd->ap) { /* Normal station */
721 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
722 IW_ESSID_MAX_SIZE+2, 1);
723 if (err)
724 return err;
725 } else { /* AP */
726 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
727 IW_ESSID_MAX_SIZE+2, 1);
728 if (err)
729 return err;
730 }
731
732 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
733 zd->dev->dev_addr, zd->dev->addr_len, 1);
734 if (err)
735 return err;
736
737 err = zd1201_enable(zd);
738 if (err)
739 return err;
740
741 msleep(100);
742 return 0;
743 }
744
745 static int zd1201_net_open(struct net_device *dev)
746 {
747 struct zd1201 *zd = netdev_priv(dev);
748
749 /* Start MAC with wildcard if no essid set */
750 if (!zd->mac_enabled)
751 zd1201_join(zd, zd->essid, zd->essidlen);
752 netif_start_queue(dev);
753
754 return 0;
755 }
756
757 static int zd1201_net_stop(struct net_device *dev)
758 {
759 netif_stop_queue(dev);
760 return 0;
761 }
762
763 /*
764 RFC 1042 encapsulates Ethernet frames in 802.11 frames
765 by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
766 (0x00, 0x00, 0x00). Zd requires an additional padding, copy
767 of ethernet addresses, length of the standard RFC 1042 packet
768 and a command byte (which is nul for tx).
769
770 tx frame (from Wlan NG):
771 RFC 1042:
772 llc 0xAA 0xAA 0x03 (802.2 LLC)
773 snap 0x00 0x00 0x00 (Ethernet encapsulated)
774 type 2 bytes, Ethernet type field
775 payload (minus eth header)
776 Zydas specific:
777 padding 1B if (skb->len+8+1)%64==0
778 Eth MAC addr 12 bytes, Ethernet MAC addresses
779 length 2 bytes, RFC 1042 packet length
780 (llc+snap+type+payload)
781 zd 1 null byte, zd1201 packet type
782 */
783 static netdev_tx_t zd1201_hard_start_xmit(struct sk_buff *skb,
784 struct net_device *dev)
785 {
786 struct zd1201 *zd = netdev_priv(dev);
787 unsigned char *txbuf = zd->txdata;
788 int txbuflen, pad = 0, err;
789 struct urb *urb = zd->tx_urb;
790
791 if (!zd->mac_enabled || zd->monitor) {
792 dev->stats.tx_dropped++;
793 kfree_skb(skb);
794 return NETDEV_TX_OK;
795 }
796 netif_stop_queue(dev);
797
798 txbuflen = skb->len + 8 + 1;
799 if (txbuflen%64 == 0) {
800 pad = 1;
801 txbuflen++;
802 }
803 txbuf[0] = 0xAA;
804 txbuf[1] = 0xAA;
805 txbuf[2] = 0x03;
806 txbuf[3] = 0x00; /* rfc1042 */
807 txbuf[4] = 0x00;
808 txbuf[5] = 0x00;
809
810 skb_copy_from_linear_data_offset(skb, 12, txbuf + 6, skb->len - 12);
811 if (pad)
812 txbuf[skb->len-12+6]=0;
813 skb_copy_from_linear_data(skb, txbuf + skb->len - 12 + 6 + pad, 12);
814 *(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
815 txbuf[txbuflen-1] = 0;
816
817 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
818 txbuf, txbuflen, zd1201_usbtx, zd);
819
820 err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
821 if (err) {
822 dev->stats.tx_errors++;
823 netif_start_queue(dev);
824 } else {
825 dev->stats.tx_packets++;
826 dev->stats.tx_bytes += skb->len;
827 }
828 kfree_skb(skb);
829
830 return NETDEV_TX_OK;
831 }
832
833 static void zd1201_tx_timeout(struct net_device *dev, unsigned int txqueue)
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 netif_trans_update(dev); /* prevent tx timeout */
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 netdev_hw_addr *ha;
876 unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
877 int i;
878
879 if (netdev_mc_count(dev) > ZD1201_MAXMULTI)
880 return;
881
882 i = 0;
883 netdev_for_each_mc_addr(ha, dev)
884 memcpy(reqbuf + i++ * ETH_ALEN, ha->addr, ETH_ALEN);
885 zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
886 netdev_mc_count(dev) * ETH_ALEN, 0);
887 }
888
889 static int zd1201_config_commit(struct net_device *dev,
890 struct iw_request_info *info, struct iw_point *data, char *essid)
891 {
892 struct zd1201 *zd = netdev_priv(dev);
893
894 return zd1201_mac_reset(zd);
895 }
896
897 static int zd1201_get_name(struct net_device *dev,
898 struct iw_request_info *info, char *name, char *extra)
899 {
900 strcpy(name, "IEEE 802.11b");
901 return 0;
902 }
903
904 static int zd1201_set_freq(struct net_device *dev,
905 struct iw_request_info *info, struct iw_freq *freq, char *extra)
906 {
907 struct zd1201 *zd = netdev_priv(dev);
908 short channel = 0;
909 int err;
910
911 if (freq->e == 0)
912 channel = freq->m;
913 else
914 channel = ieee80211_frequency_to_channel(freq->m);
915
916 err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
917 if (err)
918 return err;
919
920 zd1201_mac_reset(zd);
921
922 return 0;
923 }
924
925 static int zd1201_get_freq(struct net_device *dev,
926 struct iw_request_info *info, struct iw_freq *freq, char *extra)
927 {
928 struct zd1201 *zd = netdev_priv(dev);
929 short channel;
930 int err;
931
932 err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
933 if (err)
934 return err;
935 freq->e = 0;
936 freq->m = channel;
937
938 return 0;
939 }
940
941 static int zd1201_set_mode(struct net_device *dev,
942 struct iw_request_info *info, __u32 *mode, char *extra)
943 {
944 struct zd1201 *zd = netdev_priv(dev);
945 short porttype, monitor = 0;
946 unsigned char buffer[IW_ESSID_MAX_SIZE+2];
947 int err;
948
949 if (zd->ap) {
950 if (*mode != IW_MODE_MASTER)
951 return -EINVAL;
952 return 0;
953 }
954
955 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
956 if (err)
957 return err;
958 zd->dev->type = ARPHRD_ETHER;
959 switch(*mode) {
960 case IW_MODE_MONITOR:
961 monitor = 1;
962 zd->dev->type = ARPHRD_IEEE80211;
963 /* Make sure we are no longer associated with by
964 setting an 'impossible' essid.
965 (otherwise we mess up firmware)
966 */
967 zd1201_join(zd, "\0-*#\0", 5);
968 /* Put port in pIBSS */
969 /* Fall through */
970 case 8: /* No pseudo-IBSS in wireless extensions (yet) */
971 porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
972 break;
973 case IW_MODE_ADHOC:
974 porttype = ZD1201_PORTTYPE_IBSS;
975 break;
976 case IW_MODE_INFRA:
977 porttype = ZD1201_PORTTYPE_BSS;
978 break;
979 default:
980 return -EINVAL;
981 }
982
983 err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
984 if (err)
985 return err;
986 if (zd->monitor && !monitor) {
987 zd1201_disable(zd);
988 *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
989 memcpy(buffer+2, zd->essid, zd->essidlen);
990 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
991 buffer, IW_ESSID_MAX_SIZE+2, 1);
992 if (err)
993 return err;
994 }
995 zd->monitor = monitor;
996 /* If monitor mode is set we don't actually turn it on here since it
997 * is done during mac reset anyway (see zd1201_mac_enable).
998 */
999 zd1201_mac_reset(zd);
1000
1001 return 0;
1002 }
1003
1004 static int zd1201_get_mode(struct net_device *dev,
1005 struct iw_request_info *info, __u32 *mode, char *extra)
1006 {
1007 struct zd1201 *zd = netdev_priv(dev);
1008 short porttype;
1009 int err;
1010
1011 err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1012 if (err)
1013 return err;
1014 switch(porttype) {
1015 case ZD1201_PORTTYPE_IBSS:
1016 *mode = IW_MODE_ADHOC;
1017 break;
1018 case ZD1201_PORTTYPE_BSS:
1019 *mode = IW_MODE_INFRA;
1020 break;
1021 case ZD1201_PORTTYPE_WDS:
1022 *mode = IW_MODE_REPEAT;
1023 break;
1024 case ZD1201_PORTTYPE_PSEUDOIBSS:
1025 *mode = 8;/* No Pseudo-IBSS... */
1026 break;
1027 case ZD1201_PORTTYPE_AP:
1028 *mode = IW_MODE_MASTER;
1029 break;
1030 default:
1031 dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1032 porttype);
1033 *mode = IW_MODE_AUTO;
1034 }
1035 if (zd->monitor)
1036 *mode = IW_MODE_MONITOR;
1037
1038 return 0;
1039 }
1040
1041 static int zd1201_get_range(struct net_device *dev,
1042 struct iw_request_info *info, struct iw_point *wrq, char *extra)
1043 {
1044 struct iw_range *range = (struct iw_range *)extra;
1045
1046 wrq->length = sizeof(struct iw_range);
1047 memset(range, 0, sizeof(struct iw_range));
1048 range->we_version_compiled = WIRELESS_EXT;
1049 range->we_version_source = WIRELESS_EXT;
1050
1051 range->max_qual.qual = 128;
1052 range->max_qual.level = 128;
1053 range->max_qual.noise = 128;
1054 range->max_qual.updated = 7;
1055
1056 range->encoding_size[0] = 5;
1057 range->encoding_size[1] = 13;
1058 range->num_encoding_sizes = 2;
1059 range->max_encoding_tokens = ZD1201_NUMKEYS;
1060
1061 range->num_bitrates = 4;
1062 range->bitrate[0] = 1000000;
1063 range->bitrate[1] = 2000000;
1064 range->bitrate[2] = 5500000;
1065 range->bitrate[3] = 11000000;
1066
1067 range->min_rts = 0;
1068 range->min_frag = ZD1201_FRAGMIN;
1069 range->max_rts = ZD1201_RTSMAX;
1070 range->min_frag = ZD1201_FRAGMAX;
1071
1072 return 0;
1073 }
1074
1075 /* Little bit of magic here: we only get the quality if we poll
1076 * for it, and we never get an actual request to trigger such
1077 * a poll. Therefore we 'assume' that the user will soon ask for
1078 * the stats after asking the bssid.
1079 */
1080 static int zd1201_get_wap(struct net_device *dev,
1081 struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1082 {
1083 struct zd1201 *zd = netdev_priv(dev);
1084 unsigned char buffer[6];
1085
1086 if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1087 /* Unfortunately the quality and noise reported is useless.
1088 they seem to be accumulators that increase until you
1089 read them, unless we poll on a fixed interval we can't
1090 use them
1091 */
1092 /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1093 zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1094 /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1095 zd->iwstats.qual.updated = 2;
1096 }
1097
1098 return zd1201_getconfig(zd, ZD1201_RID_CURRENTBSSID, ap_addr->sa_data, 6);
1099 }
1100
1101 static int zd1201_set_scan(struct net_device *dev,
1102 struct iw_request_info *info, struct iw_point *srq, char *extra)
1103 {
1104 /* We do everything in get_scan */
1105 return 0;
1106 }
1107
1108 static int zd1201_get_scan(struct net_device *dev,
1109 struct iw_request_info *info, struct iw_point *srq, char *extra)
1110 {
1111 struct zd1201 *zd = netdev_priv(dev);
1112 int err, i, j, enabled_save;
1113 struct iw_event iwe;
1114 char *cev = extra;
1115 char *end_buf = extra + IW_SCAN_MAX_DATA;
1116
1117 /* No scanning in AP mode */
1118 if (zd->ap)
1119 return -EOPNOTSUPP;
1120
1121 /* Scan doesn't seem to work if disabled */
1122 enabled_save = zd->mac_enabled;
1123 zd1201_enable(zd);
1124
1125 zd->rxdatas = 0;
1126 err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE,
1127 ZD1201_INQ_SCANRESULTS, 0, 0);
1128 if (err)
1129 return err;
1130
1131 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1132 if (!zd->rxlen)
1133 return -EIO;
1134
1135 if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1136 return -EIO;
1137
1138 for(i=8; i<zd->rxlen; i+=62) {
1139 iwe.cmd = SIOCGIWAP;
1140 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1141 memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1142 cev = iwe_stream_add_event(info, cev, end_buf,
1143 &iwe, IW_EV_ADDR_LEN);
1144
1145 iwe.cmd = SIOCGIWESSID;
1146 iwe.u.data.length = zd->rxdata[i+16];
1147 iwe.u.data.flags = 1;
1148 cev = iwe_stream_add_point(info, cev, end_buf,
1149 &iwe, zd->rxdata+i+18);
1150
1151 iwe.cmd = SIOCGIWMODE;
1152 if (zd->rxdata[i+14]&0x01)
1153 iwe.u.mode = IW_MODE_MASTER;
1154 else
1155 iwe.u.mode = IW_MODE_ADHOC;
1156 cev = iwe_stream_add_event(info, cev, end_buf,
1157 &iwe, IW_EV_UINT_LEN);
1158
1159 iwe.cmd = SIOCGIWFREQ;
1160 iwe.u.freq.m = zd->rxdata[i+0];
1161 iwe.u.freq.e = 0;
1162 cev = iwe_stream_add_event(info, cev, end_buf,
1163 &iwe, IW_EV_FREQ_LEN);
1164
1165 iwe.cmd = SIOCGIWRATE;
1166 iwe.u.bitrate.fixed = 0;
1167 iwe.u.bitrate.disabled = 0;
1168 for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
1169 iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
1170 cev = iwe_stream_add_event(info, cev, end_buf,
1171 &iwe, IW_EV_PARAM_LEN);
1172 }
1173
1174 iwe.cmd = SIOCGIWENCODE;
1175 iwe.u.data.length = 0;
1176 if (zd->rxdata[i+14]&0x10)
1177 iwe.u.data.flags = IW_ENCODE_ENABLED;
1178 else
1179 iwe.u.data.flags = IW_ENCODE_DISABLED;
1180 cev = iwe_stream_add_point(info, cev, end_buf, &iwe, NULL);
1181
1182 iwe.cmd = IWEVQUAL;
1183 iwe.u.qual.qual = zd->rxdata[i+4];
1184 iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
1185 iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
1186 iwe.u.qual.updated = 7;
1187 cev = iwe_stream_add_event(info, cev, end_buf,
1188 &iwe, IW_EV_QUAL_LEN);
1189 }
1190
1191 if (!enabled_save)
1192 zd1201_disable(zd);
1193
1194 srq->length = cev - extra;
1195 srq->flags = 0;
1196
1197 return 0;
1198 }
1199
1200 static int zd1201_set_essid(struct net_device *dev,
1201 struct iw_request_info *info, struct iw_point *data, char *essid)
1202 {
1203 struct zd1201 *zd = netdev_priv(dev);
1204
1205 if (data->length > IW_ESSID_MAX_SIZE)
1206 return -EINVAL;
1207 if (data->length < 1)
1208 data->length = 1;
1209 zd->essidlen = data->length;
1210 memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1211 memcpy(zd->essid, essid, data->length);
1212 return zd1201_join(zd, zd->essid, zd->essidlen);
1213 }
1214
1215 static int zd1201_get_essid(struct net_device *dev,
1216 struct iw_request_info *info, struct iw_point *data, char *essid)
1217 {
1218 struct zd1201 *zd = netdev_priv(dev);
1219
1220 memcpy(essid, zd->essid, zd->essidlen);
1221 data->flags = 1;
1222 data->length = zd->essidlen;
1223
1224 return 0;
1225 }
1226
1227 static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1228 struct iw_point *data, char *nick)
1229 {
1230 strcpy(nick, "zd1201");
1231 data->flags = 1;
1232 data->length = strlen(nick);
1233 return 0;
1234 }
1235
1236 static int zd1201_set_rate(struct net_device *dev,
1237 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1238 {
1239 struct zd1201 *zd = netdev_priv(dev);
1240 short rate;
1241 int err;
1242
1243 switch (rrq->value) {
1244 case 1000000:
1245 rate = ZD1201_RATEB1;
1246 break;
1247 case 2000000:
1248 rate = ZD1201_RATEB2;
1249 break;
1250 case 5500000:
1251 rate = ZD1201_RATEB5;
1252 break;
1253 case 11000000:
1254 default:
1255 rate = ZD1201_RATEB11;
1256 break;
1257 }
1258 if (!rrq->fixed) { /* Also enable all lower bitrates */
1259 rate |= rate-1;
1260 }
1261
1262 err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1263 if (err)
1264 return err;
1265
1266 return zd1201_mac_reset(zd);
1267 }
1268
1269 static int zd1201_get_rate(struct net_device *dev,
1270 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1271 {
1272 struct zd1201 *zd = netdev_priv(dev);
1273 short rate;
1274 int err;
1275
1276 err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1277 if (err)
1278 return err;
1279
1280 switch(rate) {
1281 case 1:
1282 rrq->value = 1000000;
1283 break;
1284 case 2:
1285 rrq->value = 2000000;
1286 break;
1287 case 5:
1288 rrq->value = 5500000;
1289 break;
1290 case 11:
1291 rrq->value = 11000000;
1292 break;
1293 default:
1294 rrq->value = 0;
1295 }
1296 rrq->fixed = 0;
1297 rrq->disabled = 0;
1298
1299 return 0;
1300 }
1301
1302 static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1303 struct iw_param *rts, char *extra)
1304 {
1305 struct zd1201 *zd = netdev_priv(dev);
1306 int err;
1307 short val = rts->value;
1308
1309 if (rts->disabled || !rts->fixed)
1310 val = ZD1201_RTSMAX;
1311 if (val > ZD1201_RTSMAX)
1312 return -EINVAL;
1313 if (val < 0)
1314 return -EINVAL;
1315
1316 err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1317 if (err)
1318 return err;
1319 return zd1201_mac_reset(zd);
1320 }
1321
1322 static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1323 struct iw_param *rts, char *extra)
1324 {
1325 struct zd1201 *zd = netdev_priv(dev);
1326 short rtst;
1327 int err;
1328
1329 err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1330 if (err)
1331 return err;
1332 rts->value = rtst;
1333 rts->disabled = (rts->value == ZD1201_RTSMAX);
1334 rts->fixed = 1;
1335
1336 return 0;
1337 }
1338
1339 static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1340 struct iw_param *frag, char *extra)
1341 {
1342 struct zd1201 *zd = netdev_priv(dev);
1343 int err;
1344 short val = frag->value;
1345
1346 if (frag->disabled || !frag->fixed)
1347 val = ZD1201_FRAGMAX;
1348 if (val > ZD1201_FRAGMAX)
1349 return -EINVAL;
1350 if (val < ZD1201_FRAGMIN)
1351 return -EINVAL;
1352 if (val & 1)
1353 return -EINVAL;
1354 err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1355 if (err)
1356 return err;
1357 return zd1201_mac_reset(zd);
1358 }
1359
1360 static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1361 struct iw_param *frag, char *extra)
1362 {
1363 struct zd1201 *zd = netdev_priv(dev);
1364 short fragt;
1365 int err;
1366
1367 err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1368 if (err)
1369 return err;
1370 frag->value = fragt;
1371 frag->disabled = (frag->value == ZD1201_FRAGMAX);
1372 frag->fixed = 1;
1373
1374 return 0;
1375 }
1376
1377 static int zd1201_set_retry(struct net_device *dev,
1378 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1379 {
1380 return 0;
1381 }
1382
1383 static int zd1201_get_retry(struct net_device *dev,
1384 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1385 {
1386 return 0;
1387 }
1388
1389 static int zd1201_set_encode(struct net_device *dev,
1390 struct iw_request_info *info, struct iw_point *erq, char *key)
1391 {
1392 struct zd1201 *zd = netdev_priv(dev);
1393 short i;
1394 int err, rid;
1395
1396 if (erq->length > ZD1201_MAXKEYLEN)
1397 return -EINVAL;
1398
1399 i = (erq->flags & IW_ENCODE_INDEX)-1;
1400 if (i == -1) {
1401 err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1402 if (err)
1403 return err;
1404 } else {
1405 err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1406 if (err)
1407 return err;
1408 }
1409
1410 if (i < 0 || i >= ZD1201_NUMKEYS)
1411 return -EINVAL;
1412
1413 rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1414 err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1415 if (err)
1416 return err;
1417 zd->encode_keylen[i] = erq->length;
1418 memcpy(zd->encode_keys[i], key, erq->length);
1419
1420 i=0;
1421 if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1422 i |= 0x01;
1423 zd->encode_enabled = 1;
1424 } else
1425 zd->encode_enabled = 0;
1426 if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1427 i |= 0x02;
1428 zd->encode_restricted = 1;
1429 } else
1430 zd->encode_restricted = 0;
1431 err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1432 if (err)
1433 return err;
1434
1435 if (zd->encode_enabled)
1436 i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1437 else
1438 i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1439 err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1440 if (err)
1441 return err;
1442
1443 return zd1201_mac_reset(zd);
1444 }
1445
1446 static int zd1201_get_encode(struct net_device *dev,
1447 struct iw_request_info *info, struct iw_point *erq, char *key)
1448 {
1449 struct zd1201 *zd = netdev_priv(dev);
1450 short i;
1451 int err;
1452
1453 if (zd->encode_enabled)
1454 erq->flags = IW_ENCODE_ENABLED;
1455 else
1456 erq->flags = IW_ENCODE_DISABLED;
1457 if (zd->encode_restricted)
1458 erq->flags |= IW_ENCODE_RESTRICTED;
1459 else
1460 erq->flags |= IW_ENCODE_OPEN;
1461
1462 i = (erq->flags & IW_ENCODE_INDEX) -1;
1463 if (i == -1) {
1464 err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1465 if (err)
1466 return err;
1467 }
1468 if (i<0 || i>= ZD1201_NUMKEYS)
1469 return -EINVAL;
1470
1471 erq->flags |= i+1;
1472
1473 erq->length = zd->encode_keylen[i];
1474 memcpy(key, zd->encode_keys[i], erq->length);
1475
1476 return 0;
1477 }
1478
1479 static int zd1201_set_power(struct net_device *dev,
1480 struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1481 {
1482 struct zd1201 *zd = netdev_priv(dev);
1483 short enabled, duration, level;
1484 int err;
1485
1486 enabled = vwrq->disabled ? 0 : 1;
1487 if (enabled) {
1488 if (vwrq->flags & IW_POWER_PERIOD) {
1489 duration = vwrq->value;
1490 err = zd1201_setconfig16(zd,
1491 ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1492 if (err)
1493 return err;
1494 goto out;
1495 }
1496 if (vwrq->flags & IW_POWER_TIMEOUT) {
1497 err = zd1201_getconfig16(zd,
1498 ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1499 if (err)
1500 return err;
1501 level = vwrq->value * 4 / duration;
1502 if (level > 4)
1503 level = 4;
1504 if (level < 0)
1505 level = 0;
1506 err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1507 level);
1508 if (err)
1509 return err;
1510 goto out;
1511 }
1512 return -EINVAL;
1513 }
1514 out:
1515 return zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1516 }
1517
1518 static int zd1201_get_power(struct net_device *dev,
1519 struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1520 {
1521 struct zd1201 *zd = netdev_priv(dev);
1522 short enabled, level, duration;
1523 int err;
1524
1525 err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1526 if (err)
1527 return err;
1528 err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1529 if (err)
1530 return err;
1531 err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1532 if (err)
1533 return err;
1534 vwrq->disabled = enabled ? 0 : 1;
1535 if (vwrq->flags & IW_POWER_TYPE) {
1536 if (vwrq->flags & IW_POWER_PERIOD) {
1537 vwrq->value = duration;
1538 vwrq->flags = IW_POWER_PERIOD;
1539 } else {
1540 vwrq->value = duration * level / 4;
1541 vwrq->flags = IW_POWER_TIMEOUT;
1542 }
1543 }
1544 if (vwrq->flags & IW_POWER_MODE) {
1545 if (enabled && level)
1546 vwrq->flags = IW_POWER_UNICAST_R;
1547 else
1548 vwrq->flags = IW_POWER_ALL_R;
1549 }
1550
1551 return 0;
1552 }
1553
1554
1555 static const iw_handler zd1201_iw_handler[] =
1556 {
1557 (iw_handler) zd1201_config_commit, /* SIOCSIWCOMMIT */
1558 (iw_handler) zd1201_get_name, /* SIOCGIWNAME */
1559 (iw_handler) NULL, /* SIOCSIWNWID */
1560 (iw_handler) NULL, /* SIOCGIWNWID */
1561 (iw_handler) zd1201_set_freq, /* SIOCSIWFREQ */
1562 (iw_handler) zd1201_get_freq, /* SIOCGIWFREQ */
1563 (iw_handler) zd1201_set_mode, /* SIOCSIWMODE */
1564 (iw_handler) zd1201_get_mode, /* SIOCGIWMODE */
1565 (iw_handler) NULL, /* SIOCSIWSENS */
1566 (iw_handler) NULL, /* SIOCGIWSENS */
1567 (iw_handler) NULL, /* SIOCSIWRANGE */
1568 (iw_handler) zd1201_get_range, /* SIOCGIWRANGE */
1569 (iw_handler) NULL, /* SIOCSIWPRIV */
1570 (iw_handler) NULL, /* SIOCGIWPRIV */
1571 (iw_handler) NULL, /* SIOCSIWSTATS */
1572 (iw_handler) NULL, /* SIOCGIWSTATS */
1573 (iw_handler) NULL, /* SIOCSIWSPY */
1574 (iw_handler) NULL, /* SIOCGIWSPY */
1575 (iw_handler) NULL, /* -- hole -- */
1576 (iw_handler) NULL, /* -- hole -- */
1577 (iw_handler) NULL/*zd1201_set_wap*/, /* SIOCSIWAP */
1578 (iw_handler) zd1201_get_wap, /* SIOCGIWAP */
1579 (iw_handler) NULL, /* -- hole -- */
1580 (iw_handler) NULL, /* SIOCGIWAPLIST */
1581 (iw_handler) zd1201_set_scan, /* SIOCSIWSCAN */
1582 (iw_handler) zd1201_get_scan, /* SIOCGIWSCAN */
1583 (iw_handler) zd1201_set_essid, /* SIOCSIWESSID */
1584 (iw_handler) zd1201_get_essid, /* SIOCGIWESSID */
1585 (iw_handler) NULL, /* SIOCSIWNICKN */
1586 (iw_handler) zd1201_get_nick, /* SIOCGIWNICKN */
1587 (iw_handler) NULL, /* -- hole -- */
1588 (iw_handler) NULL, /* -- hole -- */
1589 (iw_handler) zd1201_set_rate, /* SIOCSIWRATE */
1590 (iw_handler) zd1201_get_rate, /* SIOCGIWRATE */
1591 (iw_handler) zd1201_set_rts, /* SIOCSIWRTS */
1592 (iw_handler) zd1201_get_rts, /* SIOCGIWRTS */
1593 (iw_handler) zd1201_set_frag, /* SIOCSIWFRAG */
1594 (iw_handler) zd1201_get_frag, /* SIOCGIWFRAG */
1595 (iw_handler) NULL, /* SIOCSIWTXPOW */
1596 (iw_handler) NULL, /* SIOCGIWTXPOW */
1597 (iw_handler) zd1201_set_retry, /* SIOCSIWRETRY */
1598 (iw_handler) zd1201_get_retry, /* SIOCGIWRETRY */
1599 (iw_handler) zd1201_set_encode, /* SIOCSIWENCODE */
1600 (iw_handler) zd1201_get_encode, /* SIOCGIWENCODE */
1601 (iw_handler) zd1201_set_power, /* SIOCSIWPOWER */
1602 (iw_handler) zd1201_get_power, /* SIOCGIWPOWER */
1603 };
1604
1605 static int zd1201_set_hostauth(struct net_device *dev,
1606 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1607 {
1608 struct zd1201 *zd = netdev_priv(dev);
1609
1610 if (!zd->ap)
1611 return -EOPNOTSUPP;
1612
1613 return zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1614 }
1615
1616 static int zd1201_get_hostauth(struct net_device *dev,
1617 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1618 {
1619 struct zd1201 *zd = netdev_priv(dev);
1620 short hostauth;
1621 int err;
1622
1623 if (!zd->ap)
1624 return -EOPNOTSUPP;
1625
1626 err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1627 if (err)
1628 return err;
1629 rrq->value = hostauth;
1630 rrq->fixed = 1;
1631
1632 return 0;
1633 }
1634
1635 static int zd1201_auth_sta(struct net_device *dev,
1636 struct iw_request_info *info, struct sockaddr *sta, char *extra)
1637 {
1638 struct zd1201 *zd = netdev_priv(dev);
1639 unsigned char buffer[10];
1640
1641 if (!zd->ap)
1642 return -EOPNOTSUPP;
1643
1644 memcpy(buffer, sta->sa_data, ETH_ALEN);
1645 *(short*)(buffer+6) = 0; /* 0==success, 1==failure */
1646 *(short*)(buffer+8) = 0;
1647
1648 return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1649 }
1650
1651 static int zd1201_set_maxassoc(struct net_device *dev,
1652 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1653 {
1654 struct zd1201 *zd = netdev_priv(dev);
1655 int err;
1656
1657 if (!zd->ap)
1658 return -EOPNOTSUPP;
1659
1660 err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1661 if (err)
1662 return err;
1663 return 0;
1664 }
1665
1666 static int zd1201_get_maxassoc(struct net_device *dev,
1667 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1668 {
1669 struct zd1201 *zd = netdev_priv(dev);
1670 short maxassoc;
1671 int err;
1672
1673 if (!zd->ap)
1674 return -EOPNOTSUPP;
1675
1676 err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1677 if (err)
1678 return err;
1679 rrq->value = maxassoc;
1680 rrq->fixed = 1;
1681
1682 return 0;
1683 }
1684
1685 static const iw_handler zd1201_private_handler[] = {
1686 (iw_handler) zd1201_set_hostauth, /* ZD1201SIWHOSTAUTH */
1687 (iw_handler) zd1201_get_hostauth, /* ZD1201GIWHOSTAUTH */
1688 (iw_handler) zd1201_auth_sta, /* ZD1201SIWAUTHSTA */
1689 (iw_handler) NULL, /* nothing to get */
1690 (iw_handler) zd1201_set_maxassoc, /* ZD1201SIMAXASSOC */
1691 (iw_handler) zd1201_get_maxassoc, /* ZD1201GIMAXASSOC */
1692 };
1693
1694 static const struct iw_priv_args zd1201_private_args[] = {
1695 { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1696 IW_PRIV_TYPE_NONE, "sethostauth" },
1697 { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1698 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1699 { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1700 IW_PRIV_TYPE_NONE, "authstation" },
1701 { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1702 IW_PRIV_TYPE_NONE, "setmaxassoc" },
1703 { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1704 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1705 };
1706
1707 static const struct iw_handler_def zd1201_iw_handlers = {
1708 .num_standard = ARRAY_SIZE(zd1201_iw_handler),
1709 .num_private = ARRAY_SIZE(zd1201_private_handler),
1710 .num_private_args = ARRAY_SIZE(zd1201_private_args),
1711 .standard = (iw_handler *)zd1201_iw_handler,
1712 .private = (iw_handler *)zd1201_private_handler,
1713 .private_args = (struct iw_priv_args *) zd1201_private_args,
1714 .get_wireless_stats = zd1201_get_wireless_stats,
1715 };
1716
1717 static const struct net_device_ops zd1201_netdev_ops = {
1718 .ndo_open = zd1201_net_open,
1719 .ndo_stop = zd1201_net_stop,
1720 .ndo_start_xmit = zd1201_hard_start_xmit,
1721 .ndo_tx_timeout = zd1201_tx_timeout,
1722 .ndo_set_rx_mode = zd1201_set_multicast,
1723 .ndo_set_mac_address = zd1201_set_mac_address,
1724 .ndo_validate_addr = eth_validate_addr,
1725 };
1726
1727 static int zd1201_probe(struct usb_interface *interface,
1728 const struct usb_device_id *id)
1729 {
1730 struct zd1201 *zd;
1731 struct net_device *dev;
1732 struct usb_device *usb;
1733 int err;
1734 short porttype;
1735 char buf[IW_ESSID_MAX_SIZE+2];
1736
1737 usb = interface_to_usbdev(interface);
1738
1739 dev = alloc_etherdev(sizeof(*zd));
1740 if (!dev)
1741 return -ENOMEM;
1742 zd = netdev_priv(dev);
1743 zd->dev = dev;
1744
1745 zd->ap = ap;
1746 zd->usb = usb;
1747 zd->removed = 0;
1748 init_waitqueue_head(&zd->rxdataq);
1749 INIT_HLIST_HEAD(&zd->fraglist);
1750
1751 err = zd1201_fw_upload(usb, zd->ap);
1752 if (err) {
1753 dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
1754 goto err_zd;
1755 }
1756
1757 zd->endp_in = 1;
1758 zd->endp_out = 1;
1759 zd->endp_out2 = 2;
1760 zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1761 zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1762 if (!zd->rx_urb || !zd->tx_urb) {
1763 err = -ENOMEM;
1764 goto err_zd;
1765 }
1766
1767 mdelay(100);
1768 err = zd1201_drvr_start(zd);
1769 if (err)
1770 goto err_zd;
1771
1772 err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
1773 if (err)
1774 goto err_start;
1775
1776 err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
1777 ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
1778 if (err)
1779 goto err_start;
1780
1781 dev->netdev_ops = &zd1201_netdev_ops;
1782 dev->wireless_handlers = &zd1201_iw_handlers;
1783 dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
1784 strcpy(dev->name, "wlan%d");
1785
1786 err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR,
1787 dev->dev_addr, dev->addr_len);
1788 if (err)
1789 goto err_start;
1790
1791 /* Set wildcard essid to match zd->essid */
1792 *(__le16 *)buf = cpu_to_le16(0);
1793 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
1794 IW_ESSID_MAX_SIZE+2, 1);
1795 if (err)
1796 goto err_start;
1797
1798 if (zd->ap)
1799 porttype = ZD1201_PORTTYPE_AP;
1800 else
1801 porttype = ZD1201_PORTTYPE_BSS;
1802 err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1803 if (err)
1804 goto err_start;
1805
1806 SET_NETDEV_DEV(dev, &usb->dev);
1807
1808 err = register_netdev(dev);
1809 if (err)
1810 goto err_start;
1811 dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
1812 dev->name);
1813
1814 usb_set_intfdata(interface, zd);
1815 zd1201_enable(zd); /* zd1201 likes to startup enabled, */
1816 zd1201_disable(zd); /* interfering with all the wifis in range */
1817 return 0;
1818
1819 err_start:
1820 /* Leave the device in reset state */
1821 zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
1822 err_zd:
1823 usb_free_urb(zd->tx_urb);
1824 usb_free_urb(zd->rx_urb);
1825 free_netdev(dev);
1826 return err;
1827 }
1828
1829 static void zd1201_disconnect(struct usb_interface *interface)
1830 {
1831 struct zd1201 *zd = usb_get_intfdata(interface);
1832 struct hlist_node *node2;
1833 struct zd1201_frag *frag;
1834
1835 if (!zd)
1836 return;
1837 usb_set_intfdata(interface, NULL);
1838
1839 hlist_for_each_entry_safe(frag, node2, &zd->fraglist, fnode) {
1840 hlist_del_init(&frag->fnode);
1841 kfree_skb(frag->skb);
1842 kfree(frag);
1843 }
1844
1845 if (zd->tx_urb) {
1846 usb_kill_urb(zd->tx_urb);
1847 usb_free_urb(zd->tx_urb);
1848 }
1849 if (zd->rx_urb) {
1850 usb_kill_urb(zd->rx_urb);
1851 usb_free_urb(zd->rx_urb);
1852 }
1853
1854 if (zd->dev) {
1855 unregister_netdev(zd->dev);
1856 free_netdev(zd->dev);
1857 }
1858 }
1859
1860 #ifdef CONFIG_PM
1861
1862 static int zd1201_suspend(struct usb_interface *interface,
1863 pm_message_t message)
1864 {
1865 struct zd1201 *zd = usb_get_intfdata(interface);
1866
1867 netif_device_detach(zd->dev);
1868
1869 zd->was_enabled = zd->mac_enabled;
1870
1871 if (zd->was_enabled)
1872 return zd1201_disable(zd);
1873 else
1874 return 0;
1875 }
1876
1877 static int zd1201_resume(struct usb_interface *interface)
1878 {
1879 struct zd1201 *zd = usb_get_intfdata(interface);
1880
1881 if (!zd || !zd->dev)
1882 return -ENODEV;
1883
1884 netif_device_attach(zd->dev);
1885
1886 if (zd->was_enabled)
1887 return zd1201_enable(zd);
1888 else
1889 return 0;
1890 }
1891
1892 #else
1893
1894 #define zd1201_suspend NULL
1895 #define zd1201_resume NULL
1896
1897 #endif
1898
1899 static struct usb_driver zd1201_usb = {
1900 .name = "zd1201",
1901 .probe = zd1201_probe,
1902 .disconnect = zd1201_disconnect,
1903 .id_table = zd1201_table,
1904 .suspend = zd1201_suspend,
1905 .resume = zd1201_resume,
1906 .disable_hub_initiated_lpm = 1,
1907 };
1908
1909 module_usb_driver(zd1201_usb);
Linux with added FPC-III support