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
zd1201_fw_upload(struct usb_device * dev,int apfw)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
zd1201_usbfree(struct urb * urb)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 */
zd1201_docmd(struct zd1201 * zd,int cmd,int parm0,int parm1,int parm2)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 */
zd1201_usbtx(struct urb * urb)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 */
zd1201_usbrx(struct urb * urb)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->stats.rx_packets++;
332 zd->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->stats.rx_packets++;
388 zd->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
zd1201_getconfig(struct zd1201 * zd,int rid,void * riddata,unsigned int riddatalen)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 */
zd1201_setconfig(struct zd1201 * zd,int rid,void * buf,int len,int wait)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
zd1201_getconfig16(struct zd1201 * zd,int rid,short * val)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
zd1201_setconfig16(struct zd1201 * zd,int rid,short val)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
zd1201_drvr_start(struct zd1201 * zd)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 */
zd1201_enable(struct zd1201 * zd)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
zd1201_disable(struct zd1201 * zd)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
zd1201_mac_reset(struct zd1201 * zd)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
zd1201_join(struct zd1201 * zd,char * essid,int essidlen)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
zd1201_net_open(struct net_device * dev)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
zd1201_net_stop(struct net_device * dev)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 */
zd1201_hard_start_xmit(struct sk_buff * skb,struct net_device * dev)782 static int zd1201_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
783 {
784 struct zd1201 *zd = netdev_priv(dev);
785 unsigned char *txbuf = zd->txdata;
786 int txbuflen, pad = 0, err;
787 struct urb *urb = zd->tx_urb;
788
789 if (!zd->mac_enabled || zd->monitor) {
790 zd->stats.tx_dropped++;
791 kfree_skb(skb);
792 return 0;
793 }
794 netif_stop_queue(dev);
795
796 txbuflen = skb->len + 8 + 1;
797 if (txbuflen%64 == 0) {
798 pad = 1;
799 txbuflen++;
800 }
801 txbuf[0] = 0xAA;
802 txbuf[1] = 0xAA;
803 txbuf[2] = 0x03;
804 txbuf[3] = 0x00; /* rfc1042 */
805 txbuf[4] = 0x00;
806 txbuf[5] = 0x00;
807
808 skb_copy_from_linear_data_offset(skb, 12, txbuf + 6, skb->len - 12);
809 if (pad)
810 txbuf[skb->len-12+6]=0;
811 skb_copy_from_linear_data(skb, txbuf + skb->len - 12 + 6 + pad, 12);
812 *(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
813 txbuf[txbuflen-1] = 0;
814
815 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
816 txbuf, txbuflen, zd1201_usbtx, zd);
817
818 err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
819 if (err) {
820 zd->stats.tx_errors++;
821 netif_start_queue(dev);
822 return err;
823 }
824 zd->stats.tx_packets++;
825 zd->stats.tx_bytes += skb->len;
826 dev->trans_start = jiffies;
827 kfree_skb(skb);
828
829 return 0;
830 }
831
zd1201_tx_timeout(struct net_device * dev)832 static void zd1201_tx_timeout(struct net_device *dev)
833 {
834 struct zd1201 *zd = netdev_priv(dev);
835
836 if (!zd)
837 return;
838 dev_warn(&zd->usb->dev, "%s: TX timeout, shooting down urb\n",
839 dev->name);
840 usb_unlink_urb(zd->tx_urb);
841 zd->stats.tx_errors++;
842 /* Restart the timeout to quiet the watchdog: */
843 dev->trans_start = jiffies;
844 }
845
zd1201_set_mac_address(struct net_device * dev,void * p)846 static int zd1201_set_mac_address(struct net_device *dev, void *p)
847 {
848 struct sockaddr *addr = p;
849 struct zd1201 *zd = netdev_priv(dev);
850 int err;
851
852 if (!zd)
853 return -ENODEV;
854
855 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
856 addr->sa_data, dev->addr_len, 1);
857 if (err)
858 return err;
859 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
860
861 return zd1201_mac_reset(zd);
862 }
863
zd1201_get_stats(struct net_device * dev)864 static struct net_device_stats *zd1201_get_stats(struct net_device *dev)
865 {
866 struct zd1201 *zd = netdev_priv(dev);
867
868 return &zd->stats;
869 }
870
zd1201_get_wireless_stats(struct net_device * dev)871 static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
872 {
873 struct zd1201 *zd = netdev_priv(dev);
874
875 return &zd->iwstats;
876 }
877
zd1201_set_multicast(struct net_device * dev)878 static void zd1201_set_multicast(struct net_device *dev)
879 {
880 struct zd1201 *zd = netdev_priv(dev);
881 struct dev_mc_list *mc = dev->mc_list;
882 unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
883 int i;
884
885 if (dev->mc_count > ZD1201_MAXMULTI)
886 return;
887
888 for (i=0; i<dev->mc_count; i++) {
889 memcpy(reqbuf+i*ETH_ALEN, mc->dmi_addr, ETH_ALEN);
890 mc = mc->next;
891 }
892 zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
893 dev->mc_count*ETH_ALEN, 0);
894
895 }
896
zd1201_config_commit(struct net_device * dev,struct iw_request_info * info,struct iw_point * data,char * essid)897 static int zd1201_config_commit(struct net_device *dev,
898 struct iw_request_info *info, struct iw_point *data, char *essid)
899 {
900 struct zd1201 *zd = netdev_priv(dev);
901
902 return zd1201_mac_reset(zd);
903 }
904
zd1201_get_name(struct net_device * dev,struct iw_request_info * info,char * name,char * extra)905 static int zd1201_get_name(struct net_device *dev,
906 struct iw_request_info *info, char *name, char *extra)
907 {
908 strcpy(name, "IEEE 802.11b");
909 return 0;
910 }
911
zd1201_set_freq(struct net_device * dev,struct iw_request_info * info,struct iw_freq * freq,char * extra)912 static int zd1201_set_freq(struct net_device *dev,
913 struct iw_request_info *info, struct iw_freq *freq, char *extra)
914 {
915 struct zd1201 *zd = netdev_priv(dev);
916 short channel = 0;
917 int err;
918
919 if (freq->e == 0)
920 channel = freq->m;
921 else {
922 if (freq->m >= 2482)
923 channel = 14;
924 if (freq->m >= 2407)
925 channel = (freq->m-2407)/5;
926 }
927
928 err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
929 if (err)
930 return err;
931
932 zd1201_mac_reset(zd);
933
934 return 0;
935 }
936
zd1201_get_freq(struct net_device * dev,struct iw_request_info * info,struct iw_freq * freq,char * extra)937 static int zd1201_get_freq(struct net_device *dev,
938 struct iw_request_info *info, struct iw_freq *freq, char *extra)
939 {
940 struct zd1201 *zd = netdev_priv(dev);
941 short channel;
942 int err;
943
944 err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
945 if (err)
946 return err;
947 freq->e = 0;
948 freq->m = channel;
949
950 return 0;
951 }
952
zd1201_set_mode(struct net_device * dev,struct iw_request_info * info,__u32 * mode,char * extra)953 static int zd1201_set_mode(struct net_device *dev,
954 struct iw_request_info *info, __u32 *mode, char *extra)
955 {
956 struct zd1201 *zd = netdev_priv(dev);
957 short porttype, monitor = 0;
958 unsigned char buffer[IW_ESSID_MAX_SIZE+2];
959 int err;
960
961 if (zd->ap) {
962 if (*mode != IW_MODE_MASTER)
963 return -EINVAL;
964 return 0;
965 }
966
967 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
968 if (err)
969 return err;
970 zd->dev->type = ARPHRD_ETHER;
971 switch(*mode) {
972 case IW_MODE_MONITOR:
973 monitor = 1;
974 zd->dev->type = ARPHRD_IEEE80211;
975 /* Make sure we are no longer associated with by
976 setting an 'impossible' essid.
977 (otherwise we mess up firmware)
978 */
979 zd1201_join(zd, "\0-*#\0", 5);
980 /* Put port in pIBSS */
981 case 8: /* No pseudo-IBSS in wireless extensions (yet) */
982 porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
983 break;
984 case IW_MODE_ADHOC:
985 porttype = ZD1201_PORTTYPE_IBSS;
986 break;
987 case IW_MODE_INFRA:
988 porttype = ZD1201_PORTTYPE_BSS;
989 break;
990 default:
991 return -EINVAL;
992 }
993
994 err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
995 if (err)
996 return err;
997 if (zd->monitor && !monitor) {
998 zd1201_disable(zd);
999 *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
1000 memcpy(buffer+2, zd->essid, zd->essidlen);
1001 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
1002 buffer, IW_ESSID_MAX_SIZE+2, 1);
1003 if (err)
1004 return err;
1005 }
1006 zd->monitor = monitor;
1007 /* If monitor mode is set we don't actually turn it on here since it
1008 * is done during mac reset anyway (see zd1201_mac_enable).
1009 */
1010 zd1201_mac_reset(zd);
1011
1012 return 0;
1013 }
1014
zd1201_get_mode(struct net_device * dev,struct iw_request_info * info,__u32 * mode,char * extra)1015 static int zd1201_get_mode(struct net_device *dev,
1016 struct iw_request_info *info, __u32 *mode, char *extra)
1017 {
1018 struct zd1201 *zd = netdev_priv(dev);
1019 short porttype;
1020 int err;
1021
1022 err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1023 if (err)
1024 return err;
1025 switch(porttype) {
1026 case ZD1201_PORTTYPE_IBSS:
1027 *mode = IW_MODE_ADHOC;
1028 break;
1029 case ZD1201_PORTTYPE_BSS:
1030 *mode = IW_MODE_INFRA;
1031 break;
1032 case ZD1201_PORTTYPE_WDS:
1033 *mode = IW_MODE_REPEAT;
1034 break;
1035 case ZD1201_PORTTYPE_PSEUDOIBSS:
1036 *mode = 8;/* No Pseudo-IBSS... */
1037 break;
1038 case ZD1201_PORTTYPE_AP:
1039 *mode = IW_MODE_MASTER;
1040 break;
1041 default:
1042 dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1043 porttype);
1044 *mode = IW_MODE_AUTO;
1045 }
1046 if (zd->monitor)
1047 *mode = IW_MODE_MONITOR;
1048
1049 return 0;
1050 }
1051
zd1201_get_range(struct net_device * dev,struct iw_request_info * info,struct iw_point * wrq,char * extra)1052 static int zd1201_get_range(struct net_device *dev,
1053 struct iw_request_info *info, struct iw_point *wrq, char *extra)
1054 {
1055 struct iw_range *range = (struct iw_range *)extra;
1056
1057 wrq->length = sizeof(struct iw_range);
1058 memset(range, 0, sizeof(struct iw_range));
1059 range->we_version_compiled = WIRELESS_EXT;
1060 range->we_version_source = WIRELESS_EXT;
1061
1062 range->max_qual.qual = 128;
1063 range->max_qual.level = 128;
1064 range->max_qual.noise = 128;
1065 range->max_qual.updated = 7;
1066
1067 range->encoding_size[0] = 5;
1068 range->encoding_size[1] = 13;
1069 range->num_encoding_sizes = 2;
1070 range->max_encoding_tokens = ZD1201_NUMKEYS;
1071
1072 range->num_bitrates = 4;
1073 range->bitrate[0] = 1000000;
1074 range->bitrate[1] = 2000000;
1075 range->bitrate[2] = 5500000;
1076 range->bitrate[3] = 11000000;
1077
1078 range->min_rts = 0;
1079 range->min_frag = ZD1201_FRAGMIN;
1080 range->max_rts = ZD1201_RTSMAX;
1081 range->min_frag = ZD1201_FRAGMAX;
1082
1083 return 0;
1084 }
1085
1086 /* Little bit of magic here: we only get the quality if we poll
1087 * for it, and we never get an actual request to trigger such
1088 * a poll. Therefore we 'assume' that the user will soon ask for
1089 * the stats after asking the bssid.
1090 */
zd1201_get_wap(struct net_device * dev,struct iw_request_info * info,struct sockaddr * ap_addr,char * extra)1091 static int zd1201_get_wap(struct net_device *dev,
1092 struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1093 {
1094 struct zd1201 *zd = netdev_priv(dev);
1095 unsigned char buffer[6];
1096
1097 if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1098 /* Unfortunately the quality and noise reported is useless.
1099 they seem to be accumulators that increase until you
1100 read them, unless we poll on a fixed interval we can't
1101 use them
1102 */
1103 /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1104 zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1105 /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1106 zd->iwstats.qual.updated = 2;
1107 }
1108
1109 return zd1201_getconfig(zd, ZD1201_RID_CURRENTBSSID, ap_addr->sa_data, 6);
1110 }
1111
zd1201_set_scan(struct net_device * dev,struct iw_request_info * info,struct iw_point * srq,char * extra)1112 static int zd1201_set_scan(struct net_device *dev,
1113 struct iw_request_info *info, struct iw_point *srq, char *extra)
1114 {
1115 /* We do everything in get_scan */
1116 return 0;
1117 }
1118
zd1201_get_scan(struct net_device * dev,struct iw_request_info * info,struct iw_point * srq,char * extra)1119 static int zd1201_get_scan(struct net_device *dev,
1120 struct iw_request_info *info, struct iw_point *srq, char *extra)
1121 {
1122 struct zd1201 *zd = netdev_priv(dev);
1123 int err, i, j, enabled_save;
1124 struct iw_event iwe;
1125 char *cev = extra;
1126 char *end_buf = extra + IW_SCAN_MAX_DATA;
1127
1128 /* No scanning in AP mode */
1129 if (zd->ap)
1130 return -EOPNOTSUPP;
1131
1132 /* Scan doesn't seem to work if disabled */
1133 enabled_save = zd->mac_enabled;
1134 zd1201_enable(zd);
1135
1136 zd->rxdatas = 0;
1137 err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE,
1138 ZD1201_INQ_SCANRESULTS, 0, 0);
1139 if (err)
1140 return err;
1141
1142 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1143 if (!zd->rxlen)
1144 return -EIO;
1145
1146 if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1147 return -EIO;
1148
1149 for(i=8; i<zd->rxlen; i+=62) {
1150 iwe.cmd = SIOCGIWAP;
1151 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1152 memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1153 cev = iwe_stream_add_event(info, cev, end_buf,
1154 &iwe, IW_EV_ADDR_LEN);
1155
1156 iwe.cmd = SIOCGIWESSID;
1157 iwe.u.data.length = zd->rxdata[i+16];
1158 iwe.u.data.flags = 1;
1159 cev = iwe_stream_add_point(info, cev, end_buf,
1160 &iwe, zd->rxdata+i+18);
1161
1162 iwe.cmd = SIOCGIWMODE;
1163 if (zd->rxdata[i+14]&0x01)
1164 iwe.u.mode = IW_MODE_MASTER;
1165 else
1166 iwe.u.mode = IW_MODE_ADHOC;
1167 cev = iwe_stream_add_event(info, cev, end_buf,
1168 &iwe, IW_EV_UINT_LEN);
1169
1170 iwe.cmd = SIOCGIWFREQ;
1171 iwe.u.freq.m = zd->rxdata[i+0];
1172 iwe.u.freq.e = 0;
1173 cev = iwe_stream_add_event(info, cev, end_buf,
1174 &iwe, IW_EV_FREQ_LEN);
1175
1176 iwe.cmd = SIOCGIWRATE;
1177 iwe.u.bitrate.fixed = 0;
1178 iwe.u.bitrate.disabled = 0;
1179 for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
1180 iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
1181 cev = iwe_stream_add_event(info, cev, end_buf,
1182 &iwe, IW_EV_PARAM_LEN);
1183 }
1184
1185 iwe.cmd = SIOCGIWENCODE;
1186 iwe.u.data.length = 0;
1187 if (zd->rxdata[i+14]&0x10)
1188 iwe.u.data.flags = IW_ENCODE_ENABLED;
1189 else
1190 iwe.u.data.flags = IW_ENCODE_DISABLED;
1191 cev = iwe_stream_add_point(info, cev, end_buf, &iwe, NULL);
1192
1193 iwe.cmd = IWEVQUAL;
1194 iwe.u.qual.qual = zd->rxdata[i+4];
1195 iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
1196 iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
1197 iwe.u.qual.updated = 7;
1198 cev = iwe_stream_add_event(info, cev, end_buf,
1199 &iwe, IW_EV_QUAL_LEN);
1200 }
1201
1202 if (!enabled_save)
1203 zd1201_disable(zd);
1204
1205 srq->length = cev - extra;
1206 srq->flags = 0;
1207
1208 return 0;
1209 }
1210
zd1201_set_essid(struct net_device * dev,struct iw_request_info * info,struct iw_point * data,char * essid)1211 static int zd1201_set_essid(struct net_device *dev,
1212 struct iw_request_info *info, struct iw_point *data, char *essid)
1213 {
1214 struct zd1201 *zd = netdev_priv(dev);
1215
1216 if (data->length > IW_ESSID_MAX_SIZE)
1217 return -EINVAL;
1218 if (data->length < 1)
1219 data->length = 1;
1220 zd->essidlen = data->length;
1221 memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1222 memcpy(zd->essid, essid, data->length);
1223 return zd1201_join(zd, zd->essid, zd->essidlen);
1224 }
1225
zd1201_get_essid(struct net_device * dev,struct iw_request_info * info,struct iw_point * data,char * essid)1226 static int zd1201_get_essid(struct net_device *dev,
1227 struct iw_request_info *info, struct iw_point *data, char *essid)
1228 {
1229 struct zd1201 *zd = netdev_priv(dev);
1230
1231 memcpy(essid, zd->essid, zd->essidlen);
1232 data->flags = 1;
1233 data->length = zd->essidlen;
1234
1235 return 0;
1236 }
1237
zd1201_get_nick(struct net_device * dev,struct iw_request_info * info,struct iw_point * data,char * nick)1238 static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1239 struct iw_point *data, char *nick)
1240 {
1241 strcpy(nick, "zd1201");
1242 data->flags = 1;
1243 data->length = strlen(nick);
1244 return 0;
1245 }
1246
zd1201_set_rate(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1247 static int zd1201_set_rate(struct net_device *dev,
1248 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1249 {
1250 struct zd1201 *zd = netdev_priv(dev);
1251 short rate;
1252 int err;
1253
1254 switch (rrq->value) {
1255 case 1000000:
1256 rate = ZD1201_RATEB1;
1257 break;
1258 case 2000000:
1259 rate = ZD1201_RATEB2;
1260 break;
1261 case 5500000:
1262 rate = ZD1201_RATEB5;
1263 break;
1264 case 11000000:
1265 default:
1266 rate = ZD1201_RATEB11;
1267 break;
1268 }
1269 if (!rrq->fixed) { /* Also enable all lower bitrates */
1270 rate |= rate-1;
1271 }
1272
1273 err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1274 if (err)
1275 return err;
1276
1277 return zd1201_mac_reset(zd);
1278 }
1279
zd1201_get_rate(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1280 static int zd1201_get_rate(struct net_device *dev,
1281 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1282 {
1283 struct zd1201 *zd = netdev_priv(dev);
1284 short rate;
1285 int err;
1286
1287 err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1288 if (err)
1289 return err;
1290
1291 switch(rate) {
1292 case 1:
1293 rrq->value = 1000000;
1294 break;
1295 case 2:
1296 rrq->value = 2000000;
1297 break;
1298 case 5:
1299 rrq->value = 5500000;
1300 break;
1301 case 11:
1302 rrq->value = 11000000;
1303 break;
1304 default:
1305 rrq->value = 0;
1306 }
1307 rrq->fixed = 0;
1308 rrq->disabled = 0;
1309
1310 return 0;
1311 }
1312
zd1201_set_rts(struct net_device * dev,struct iw_request_info * info,struct iw_param * rts,char * extra)1313 static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1314 struct iw_param *rts, char *extra)
1315 {
1316 struct zd1201 *zd = netdev_priv(dev);
1317 int err;
1318 short val = rts->value;
1319
1320 if (rts->disabled || !rts->fixed)
1321 val = ZD1201_RTSMAX;
1322 if (val > ZD1201_RTSMAX)
1323 return -EINVAL;
1324 if (val < 0)
1325 return -EINVAL;
1326
1327 err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1328 if (err)
1329 return err;
1330 return zd1201_mac_reset(zd);
1331 }
1332
zd1201_get_rts(struct net_device * dev,struct iw_request_info * info,struct iw_param * rts,char * extra)1333 static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1334 struct iw_param *rts, char *extra)
1335 {
1336 struct zd1201 *zd = netdev_priv(dev);
1337 short rtst;
1338 int err;
1339
1340 err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1341 if (err)
1342 return err;
1343 rts->value = rtst;
1344 rts->disabled = (rts->value == ZD1201_RTSMAX);
1345 rts->fixed = 1;
1346
1347 return 0;
1348 }
1349
zd1201_set_frag(struct net_device * dev,struct iw_request_info * info,struct iw_param * frag,char * extra)1350 static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1351 struct iw_param *frag, char *extra)
1352 {
1353 struct zd1201 *zd = netdev_priv(dev);
1354 int err;
1355 short val = frag->value;
1356
1357 if (frag->disabled || !frag->fixed)
1358 val = ZD1201_FRAGMAX;
1359 if (val > ZD1201_FRAGMAX)
1360 return -EINVAL;
1361 if (val < ZD1201_FRAGMIN)
1362 return -EINVAL;
1363 if (val & 1)
1364 return -EINVAL;
1365 err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1366 if (err)
1367 return err;
1368 return zd1201_mac_reset(zd);
1369 }
1370
zd1201_get_frag(struct net_device * dev,struct iw_request_info * info,struct iw_param * frag,char * extra)1371 static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1372 struct iw_param *frag, char *extra)
1373 {
1374 struct zd1201 *zd = netdev_priv(dev);
1375 short fragt;
1376 int err;
1377
1378 err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1379 if (err)
1380 return err;
1381 frag->value = fragt;
1382 frag->disabled = (frag->value == ZD1201_FRAGMAX);
1383 frag->fixed = 1;
1384
1385 return 0;
1386 }
1387
zd1201_set_retry(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1388 static int zd1201_set_retry(struct net_device *dev,
1389 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1390 {
1391 return 0;
1392 }
1393
zd1201_get_retry(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1394 static int zd1201_get_retry(struct net_device *dev,
1395 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1396 {
1397 return 0;
1398 }
1399
zd1201_set_encode(struct net_device * dev,struct iw_request_info * info,struct iw_point * erq,char * key)1400 static int zd1201_set_encode(struct net_device *dev,
1401 struct iw_request_info *info, struct iw_point *erq, char *key)
1402 {
1403 struct zd1201 *zd = netdev_priv(dev);
1404 short i;
1405 int err, rid;
1406
1407 if (erq->length > ZD1201_MAXKEYLEN)
1408 return -EINVAL;
1409
1410 i = (erq->flags & IW_ENCODE_INDEX)-1;
1411 if (i == -1) {
1412 err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1413 if (err)
1414 return err;
1415 } else {
1416 err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1417 if (err)
1418 return err;
1419 }
1420
1421 if (i < 0 || i >= ZD1201_NUMKEYS)
1422 return -EINVAL;
1423
1424 rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1425 err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1426 if (err)
1427 return err;
1428 zd->encode_keylen[i] = erq->length;
1429 memcpy(zd->encode_keys[i], key, erq->length);
1430
1431 i=0;
1432 if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1433 i |= 0x01;
1434 zd->encode_enabled = 1;
1435 } else
1436 zd->encode_enabled = 0;
1437 if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1438 i |= 0x02;
1439 zd->encode_restricted = 1;
1440 } else
1441 zd->encode_restricted = 0;
1442 err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1443 if (err)
1444 return err;
1445
1446 if (zd->encode_enabled)
1447 i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1448 else
1449 i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1450 err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1451 if (err)
1452 return err;
1453
1454 return zd1201_mac_reset(zd);
1455 }
1456
zd1201_get_encode(struct net_device * dev,struct iw_request_info * info,struct iw_point * erq,char * key)1457 static int zd1201_get_encode(struct net_device *dev,
1458 struct iw_request_info *info, struct iw_point *erq, char *key)
1459 {
1460 struct zd1201 *zd = netdev_priv(dev);
1461 short i;
1462 int err;
1463
1464 if (zd->encode_enabled)
1465 erq->flags = IW_ENCODE_ENABLED;
1466 else
1467 erq->flags = IW_ENCODE_DISABLED;
1468 if (zd->encode_restricted)
1469 erq->flags |= IW_ENCODE_RESTRICTED;
1470 else
1471 erq->flags |= IW_ENCODE_OPEN;
1472
1473 i = (erq->flags & IW_ENCODE_INDEX) -1;
1474 if (i == -1) {
1475 err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1476 if (err)
1477 return err;
1478 }
1479 if (i<0 || i>= ZD1201_NUMKEYS)
1480 return -EINVAL;
1481
1482 erq->flags |= i+1;
1483
1484 erq->length = zd->encode_keylen[i];
1485 memcpy(key, zd->encode_keys[i], erq->length);
1486
1487 return 0;
1488 }
1489
zd1201_set_power(struct net_device * dev,struct iw_request_info * info,struct iw_param * vwrq,char * extra)1490 static int zd1201_set_power(struct net_device *dev,
1491 struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1492 {
1493 struct zd1201 *zd = netdev_priv(dev);
1494 short enabled, duration, level;
1495 int err;
1496
1497 enabled = vwrq->disabled ? 0 : 1;
1498 if (enabled) {
1499 if (vwrq->flags & IW_POWER_PERIOD) {
1500 duration = vwrq->value;
1501 err = zd1201_setconfig16(zd,
1502 ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1503 if (err)
1504 return err;
1505 goto out;
1506 }
1507 if (vwrq->flags & IW_POWER_TIMEOUT) {
1508 err = zd1201_getconfig16(zd,
1509 ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1510 if (err)
1511 return err;
1512 level = vwrq->value * 4 / duration;
1513 if (level > 4)
1514 level = 4;
1515 if (level < 0)
1516 level = 0;
1517 err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1518 level);
1519 if (err)
1520 return err;
1521 goto out;
1522 }
1523 return -EINVAL;
1524 }
1525 out:
1526 return zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1527 }
1528
zd1201_get_power(struct net_device * dev,struct iw_request_info * info,struct iw_param * vwrq,char * extra)1529 static int zd1201_get_power(struct net_device *dev,
1530 struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1531 {
1532 struct zd1201 *zd = netdev_priv(dev);
1533 short enabled, level, duration;
1534 int err;
1535
1536 err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1537 if (err)
1538 return err;
1539 err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1540 if (err)
1541 return err;
1542 err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1543 if (err)
1544 return err;
1545 vwrq->disabled = enabled ? 0 : 1;
1546 if (vwrq->flags & IW_POWER_TYPE) {
1547 if (vwrq->flags & IW_POWER_PERIOD) {
1548 vwrq->value = duration;
1549 vwrq->flags = IW_POWER_PERIOD;
1550 } else {
1551 vwrq->value = duration * level / 4;
1552 vwrq->flags = IW_POWER_TIMEOUT;
1553 }
1554 }
1555 if (vwrq->flags & IW_POWER_MODE) {
1556 if (enabled && level)
1557 vwrq->flags = IW_POWER_UNICAST_R;
1558 else
1559 vwrq->flags = IW_POWER_ALL_R;
1560 }
1561
1562 return 0;
1563 }
1564
1565
1566 static const iw_handler zd1201_iw_handler[] =
1567 {
1568 (iw_handler) zd1201_config_commit, /* SIOCSIWCOMMIT */
1569 (iw_handler) zd1201_get_name, /* SIOCGIWNAME */
1570 (iw_handler) NULL, /* SIOCSIWNWID */
1571 (iw_handler) NULL, /* SIOCGIWNWID */
1572 (iw_handler) zd1201_set_freq, /* SIOCSIWFREQ */
1573 (iw_handler) zd1201_get_freq, /* SIOCGIWFREQ */
1574 (iw_handler) zd1201_set_mode, /* SIOCSIWMODE */
1575 (iw_handler) zd1201_get_mode, /* SIOCGIWMODE */
1576 (iw_handler) NULL, /* SIOCSIWSENS */
1577 (iw_handler) NULL, /* SIOCGIWSENS */
1578 (iw_handler) NULL, /* SIOCSIWRANGE */
1579 (iw_handler) zd1201_get_range, /* SIOCGIWRANGE */
1580 (iw_handler) NULL, /* SIOCSIWPRIV */
1581 (iw_handler) NULL, /* SIOCGIWPRIV */
1582 (iw_handler) NULL, /* SIOCSIWSTATS */
1583 (iw_handler) NULL, /* SIOCGIWSTATS */
1584 (iw_handler) NULL, /* SIOCSIWSPY */
1585 (iw_handler) NULL, /* SIOCGIWSPY */
1586 (iw_handler) NULL, /* -- hole -- */
1587 (iw_handler) NULL, /* -- hole -- */
1588 (iw_handler) NULL/*zd1201_set_wap*/, /* SIOCSIWAP */
1589 (iw_handler) zd1201_get_wap, /* SIOCGIWAP */
1590 (iw_handler) NULL, /* -- hole -- */
1591 (iw_handler) NULL, /* SIOCGIWAPLIST */
1592 (iw_handler) zd1201_set_scan, /* SIOCSIWSCAN */
1593 (iw_handler) zd1201_get_scan, /* SIOCGIWSCAN */
1594 (iw_handler) zd1201_set_essid, /* SIOCSIWESSID */
1595 (iw_handler) zd1201_get_essid, /* SIOCGIWESSID */
1596 (iw_handler) NULL, /* SIOCSIWNICKN */
1597 (iw_handler) zd1201_get_nick, /* SIOCGIWNICKN */
1598 (iw_handler) NULL, /* -- hole -- */
1599 (iw_handler) NULL, /* -- hole -- */
1600 (iw_handler) zd1201_set_rate, /* SIOCSIWRATE */
1601 (iw_handler) zd1201_get_rate, /* SIOCGIWRATE */
1602 (iw_handler) zd1201_set_rts, /* SIOCSIWRTS */
1603 (iw_handler) zd1201_get_rts, /* SIOCGIWRTS */
1604 (iw_handler) zd1201_set_frag, /* SIOCSIWFRAG */
1605 (iw_handler) zd1201_get_frag, /* SIOCGIWFRAG */
1606 (iw_handler) NULL, /* SIOCSIWTXPOW */
1607 (iw_handler) NULL, /* SIOCGIWTXPOW */
1608 (iw_handler) zd1201_set_retry, /* SIOCSIWRETRY */
1609 (iw_handler) zd1201_get_retry, /* SIOCGIWRETRY */
1610 (iw_handler) zd1201_set_encode, /* SIOCSIWENCODE */
1611 (iw_handler) zd1201_get_encode, /* SIOCGIWENCODE */
1612 (iw_handler) zd1201_set_power, /* SIOCSIWPOWER */
1613 (iw_handler) zd1201_get_power, /* SIOCGIWPOWER */
1614 };
1615
zd1201_set_hostauth(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1616 static int zd1201_set_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
1621 if (!zd->ap)
1622 return -EOPNOTSUPP;
1623
1624 return zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1625 }
1626
zd1201_get_hostauth(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1627 static int zd1201_get_hostauth(struct net_device *dev,
1628 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1629 {
1630 struct zd1201 *zd = netdev_priv(dev);
1631 short hostauth;
1632 int err;
1633
1634 if (!zd->ap)
1635 return -EOPNOTSUPP;
1636
1637 err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1638 if (err)
1639 return err;
1640 rrq->value = hostauth;
1641 rrq->fixed = 1;
1642
1643 return 0;
1644 }
1645
zd1201_auth_sta(struct net_device * dev,struct iw_request_info * info,struct sockaddr * sta,char * extra)1646 static int zd1201_auth_sta(struct net_device *dev,
1647 struct iw_request_info *info, struct sockaddr *sta, char *extra)
1648 {
1649 struct zd1201 *zd = netdev_priv(dev);
1650 unsigned char buffer[10];
1651
1652 if (!zd->ap)
1653 return -EOPNOTSUPP;
1654
1655 memcpy(buffer, sta->sa_data, ETH_ALEN);
1656 *(short*)(buffer+6) = 0; /* 0==success, 1==failure */
1657 *(short*)(buffer+8) = 0;
1658
1659 return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1660 }
1661
zd1201_set_maxassoc(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1662 static int zd1201_set_maxassoc(struct net_device *dev,
1663 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1664 {
1665 struct zd1201 *zd = netdev_priv(dev);
1666 int err;
1667
1668 if (!zd->ap)
1669 return -EOPNOTSUPP;
1670
1671 err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1672 if (err)
1673 return err;
1674 return 0;
1675 }
1676
zd1201_get_maxassoc(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1677 static int zd1201_get_maxassoc(struct net_device *dev,
1678 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1679 {
1680 struct zd1201 *zd = netdev_priv(dev);
1681 short maxassoc;
1682 int err;
1683
1684 if (!zd->ap)
1685 return -EOPNOTSUPP;
1686
1687 err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1688 if (err)
1689 return err;
1690 rrq->value = maxassoc;
1691 rrq->fixed = 1;
1692
1693 return 0;
1694 }
1695
1696 static const iw_handler zd1201_private_handler[] = {
1697 (iw_handler) zd1201_set_hostauth, /* ZD1201SIWHOSTAUTH */
1698 (iw_handler) zd1201_get_hostauth, /* ZD1201GIWHOSTAUTH */
1699 (iw_handler) zd1201_auth_sta, /* ZD1201SIWAUTHSTA */
1700 (iw_handler) NULL, /* nothing to get */
1701 (iw_handler) zd1201_set_maxassoc, /* ZD1201SIMAXASSOC */
1702 (iw_handler) zd1201_get_maxassoc, /* ZD1201GIMAXASSOC */
1703 };
1704
1705 static const struct iw_priv_args zd1201_private_args[] = {
1706 { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1707 IW_PRIV_TYPE_NONE, "sethostauth" },
1708 { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1709 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1710 { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1711 IW_PRIV_TYPE_NONE, "authstation" },
1712 { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1713 IW_PRIV_TYPE_NONE, "setmaxassoc" },
1714 { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1715 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1716 };
1717
1718 static const struct iw_handler_def zd1201_iw_handlers = {
1719 .num_standard = ARRAY_SIZE(zd1201_iw_handler),
1720 .num_private = ARRAY_SIZE(zd1201_private_handler),
1721 .num_private_args = ARRAY_SIZE(zd1201_private_args),
1722 .standard = (iw_handler *)zd1201_iw_handler,
1723 .private = (iw_handler *)zd1201_private_handler,
1724 .private_args = (struct iw_priv_args *) zd1201_private_args,
1725 .get_wireless_stats = zd1201_get_wireless_stats,
1726 };
1727
zd1201_probe(struct usb_interface * interface,const struct usb_device_id * id)1728 static int zd1201_probe(struct usb_interface *interface,
1729 const struct usb_device_id *id)
1730 {
1731 struct zd1201 *zd;
1732 struct net_device *dev;
1733 struct usb_device *usb;
1734 int err;
1735 short porttype;
1736 char buf[IW_ESSID_MAX_SIZE+2];
1737
1738 usb = interface_to_usbdev(interface);
1739
1740 dev = alloc_etherdev(sizeof(*zd));
1741 if (!dev)
1742 return -ENOMEM;
1743 zd = netdev_priv(dev);
1744 zd->dev = dev;
1745
1746 zd->ap = ap;
1747 zd->usb = usb;
1748 zd->removed = 0;
1749 init_waitqueue_head(&zd->rxdataq);
1750 INIT_HLIST_HEAD(&zd->fraglist);
1751
1752 err = zd1201_fw_upload(usb, zd->ap);
1753 if (err) {
1754 dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
1755 goto err_zd;
1756 }
1757
1758 zd->endp_in = 1;
1759 zd->endp_out = 1;
1760 zd->endp_out2 = 2;
1761 zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1762 zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1763 if (!zd->rx_urb || !zd->tx_urb)
1764 goto err_zd;
1765
1766 mdelay(100);
1767 err = zd1201_drvr_start(zd);
1768 if (err)
1769 goto err_zd;
1770
1771 err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
1772 if (err)
1773 goto err_start;
1774
1775 err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
1776 ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
1777 if (err)
1778 goto err_start;
1779
1780 dev->open = zd1201_net_open;
1781 dev->stop = zd1201_net_stop;
1782 dev->get_stats = zd1201_get_stats;
1783 dev->wireless_handlers =
1784 (struct iw_handler_def *)&zd1201_iw_handlers;
1785 dev->hard_start_xmit = zd1201_hard_start_xmit;
1786 dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
1787 dev->tx_timeout = zd1201_tx_timeout;
1788 dev->set_multicast_list = zd1201_set_multicast;
1789 dev->set_mac_address = zd1201_set_mac_address;
1790 strcpy(dev->name, "wlan%d");
1791
1792 err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR,
1793 dev->dev_addr, dev->addr_len);
1794 if (err)
1795 goto err_start;
1796
1797 /* Set wildcard essid to match zd->essid */
1798 *(__le16 *)buf = cpu_to_le16(0);
1799 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
1800 IW_ESSID_MAX_SIZE+2, 1);
1801 if (err)
1802 goto err_start;
1803
1804 if (zd->ap)
1805 porttype = ZD1201_PORTTYPE_AP;
1806 else
1807 porttype = ZD1201_PORTTYPE_BSS;
1808 err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1809 if (err)
1810 goto err_start;
1811
1812 SET_NETDEV_DEV(dev, &usb->dev);
1813
1814 err = register_netdev(dev);
1815 if (err)
1816 goto err_start;
1817 dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
1818 dev->name);
1819
1820 usb_set_intfdata(interface, zd);
1821 zd1201_enable(zd); /* zd1201 likes to startup enabled, */
1822 zd1201_disable(zd); /* interfering with all the wifis in range */
1823 return 0;
1824
1825 err_start:
1826 /* Leave the device in reset state */
1827 zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
1828 err_zd:
1829 usb_free_urb(zd->tx_urb);
1830 usb_free_urb(zd->rx_urb);
1831 free_netdev(dev);
1832 return err;
1833 }
1834
zd1201_disconnect(struct usb_interface * interface)1835 static void zd1201_disconnect(struct usb_interface *interface)
1836 {
1837 struct zd1201 *zd=(struct zd1201 *)usb_get_intfdata(interface);
1838 struct hlist_node *node, *node2;
1839 struct zd1201_frag *frag;
1840
1841 if (!zd)
1842 return;
1843 usb_set_intfdata(interface, NULL);
1844
1845 hlist_for_each_entry_safe(frag, node, node2, &zd->fraglist, fnode) {
1846 hlist_del_init(&frag->fnode);
1847 kfree_skb(frag->skb);
1848 kfree(frag);
1849 }
1850
1851 if (zd->tx_urb) {
1852 usb_kill_urb(zd->tx_urb);
1853 usb_free_urb(zd->tx_urb);
1854 }
1855 if (zd->rx_urb) {
1856 usb_kill_urb(zd->rx_urb);
1857 usb_free_urb(zd->rx_urb);
1858 }
1859
1860 if (zd->dev) {
1861 unregister_netdev(zd->dev);
1862 free_netdev(zd->dev);
1863 }
1864 }
1865
1866 #ifdef CONFIG_PM
1867
zd1201_suspend(struct usb_interface * interface,pm_message_t message)1868 static int zd1201_suspend(struct usb_interface *interface,
1869 pm_message_t message)
1870 {
1871 struct zd1201 *zd = usb_get_intfdata(interface);
1872
1873 netif_device_detach(zd->dev);
1874
1875 zd->was_enabled = zd->mac_enabled;
1876
1877 if (zd->was_enabled)
1878 return zd1201_disable(zd);
1879 else
1880 return 0;
1881 }
1882
zd1201_resume(struct usb_interface * interface)1883 static int zd1201_resume(struct usb_interface *interface)
1884 {
1885 struct zd1201 *zd = usb_get_intfdata(interface);
1886
1887 if (!zd || !zd->dev)
1888 return -ENODEV;
1889
1890 netif_device_attach(zd->dev);
1891
1892 if (zd->was_enabled)
1893 return zd1201_enable(zd);
1894 else
1895 return 0;
1896 }
1897
1898 #else
1899
1900 #define zd1201_suspend NULL
1901 #define zd1201_resume NULL
1902
1903 #endif
1904
1905 static struct usb_driver zd1201_usb = {
1906 .name = "zd1201",
1907 .probe = zd1201_probe,
1908 .disconnect = zd1201_disconnect,
1909 .id_table = zd1201_table,
1910 .suspend = zd1201_suspend,
1911 .resume = zd1201_resume,
1912 };
1913
zd1201_init(void)1914 static int __init zd1201_init(void)
1915 {
1916 return usb_register(&zd1201_usb);
1917 }
1918
zd1201_cleanup(void)1919 static void __exit zd1201_cleanup(void)
1920 {
1921 usb_deregister(&zd1201_usb);
1922 }
1923
1924 module_init(zd1201_init);
1925 module_exit(zd1201_cleanup);
1926