1 /*
2 * Driver for ZyDAS zd1201 based wireless USB devices.
3 *
4 * Copyright (c) 2004, 2005 Jeroen Vreeken (pe1rxq@amsat.org)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * version 2 as published by the Free Software Foundation.
9 *
10 * Parts of this driver have been derived from a wlan-ng version
11 * modified by ZyDAS. They also made documentation available, thanks!
12 * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
13 */
14
15 #include <linux/module.h>
16 #include <linux/usb.h>
17 #include <linux/slab.h>
18 #include <linux/netdevice.h>
19 #include <linux/etherdevice.h>
20 #include <linux/wireless.h>
21 #include <net/cfg80211.h>
22 #include <net/iw_handler.h>
23 #include <linux/string.h>
24 #include <linux/if_arp.h>
25 #include <linux/firmware.h>
26 #include "zd1201.h"
27
28 static const struct usb_device_id zd1201_table[] = {
29 {USB_DEVICE(0x0586, 0x3400)}, /* Peabird Wireless USB Adapter */
30 {USB_DEVICE(0x0ace, 0x1201)}, /* ZyDAS ZD1201 Wireless USB Adapter */
31 {USB_DEVICE(0x050d, 0x6051)}, /* Belkin F5D6051 usb adapter */
32 {USB_DEVICE(0x0db0, 0x6823)}, /* MSI UB11B usb adapter */
33 {USB_DEVICE(0x1044, 0x8004)}, /* Gigabyte GN-WLBZ101 */
34 {USB_DEVICE(0x1044, 0x8005)}, /* GIGABYTE GN-WLBZ201 usb adapter */
35 {}
36 };
37
38 static int ap; /* Are we an AP or a normal station? */
39
40 #define ZD1201_VERSION "0.15"
41
42 MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>");
43 MODULE_DESCRIPTION("Driver for ZyDAS ZD1201 based USB Wireless adapters");
44 MODULE_VERSION(ZD1201_VERSION);
45 MODULE_LICENSE("GPL");
46 module_param(ap, int, 0);
47 MODULE_PARM_DESC(ap, "If non-zero Access Point firmware will be loaded");
48 MODULE_DEVICE_TABLE(usb, zd1201_table);
49
50
zd1201_fw_upload(struct usb_device * dev,int apfw)51 static int zd1201_fw_upload(struct usb_device *dev, int apfw)
52 {
53 const struct firmware *fw_entry;
54 const char *data;
55 unsigned long len;
56 int err;
57 unsigned char ret;
58 char *buf;
59 char *fwfile;
60
61 if (apfw)
62 fwfile = "zd1201-ap.fw";
63 else
64 fwfile = "zd1201.fw";
65
66 err = request_firmware(&fw_entry, fwfile, &dev->dev);
67 if (err) {
68 dev_err(&dev->dev, "Failed to load %s firmware file!\n", fwfile);
69 dev_err(&dev->dev, "Make sure the hotplug firmware loader is installed.\n");
70 dev_err(&dev->dev, "Goto http://linux-lc100020.sourceforge.net for more info.\n");
71 return err;
72 }
73
74 data = fw_entry->data;
75 len = fw_entry->size;
76
77 buf = kmalloc(1024, GFP_ATOMIC);
78 if (!buf) {
79 err = -ENOMEM;
80 goto exit;
81 }
82
83 while (len > 0) {
84 int translen = (len > 1024) ? 1024 : len;
85 memcpy(buf, data, translen);
86
87 err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0,
88 USB_DIR_OUT | 0x40, 0, 0, buf, translen,
89 ZD1201_FW_TIMEOUT);
90 if (err < 0)
91 goto exit;
92
93 len -= translen;
94 data += translen;
95 }
96
97 err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0x2,
98 USB_DIR_OUT | 0x40, 0, 0, NULL, 0, ZD1201_FW_TIMEOUT);
99 if (err < 0)
100 goto exit;
101
102 err = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 0x4,
103 USB_DIR_IN | 0x40, 0, 0, buf, sizeof(ret), ZD1201_FW_TIMEOUT);
104 if (err < 0)
105 goto exit;
106
107 memcpy(&ret, buf, sizeof(ret));
108
109 if (ret & 0x80) {
110 err = -EIO;
111 goto exit;
112 }
113
114 err = 0;
115 exit:
116 kfree(buf);
117 release_firmware(fw_entry);
118 return err;
119 }
120
121 MODULE_FIRMWARE("zd1201-ap.fw");
122 MODULE_FIRMWARE("zd1201.fw");
123
zd1201_usbfree(struct urb * urb)124 static void zd1201_usbfree(struct urb *urb)
125 {
126 struct zd1201 *zd = urb->context;
127
128 switch(urb->status) {
129 case -EILSEQ:
130 case -ENODEV:
131 case -ETIME:
132 case -ENOENT:
133 case -EPIPE:
134 case -EOVERFLOW:
135 case -ESHUTDOWN:
136 dev_warn(&zd->usb->dev, "%s: urb failed: %d\n",
137 zd->dev->name, urb->status);
138 }
139
140 kfree(urb->transfer_buffer);
141 usb_free_urb(urb);
142 }
143
144 /* cmdreq message:
145 u32 type
146 u16 cmd
147 u16 parm0
148 u16 parm1
149 u16 parm2
150 u8 pad[4]
151
152 total: 4 + 2 + 2 + 2 + 2 + 4 = 16
153 */
zd1201_docmd(struct zd1201 * zd,int cmd,int parm0,int parm1,int parm2)154 static int zd1201_docmd(struct zd1201 *zd, int cmd, int parm0,
155 int parm1, int parm2)
156 {
157 unsigned char *command;
158 int ret;
159 struct urb *urb;
160
161 command = kmalloc(16, GFP_ATOMIC);
162 if (!command)
163 return -ENOMEM;
164
165 *((__le32*)command) = cpu_to_le32(ZD1201_USB_CMDREQ);
166 *((__le16*)&command[4]) = cpu_to_le16(cmd);
167 *((__le16*)&command[6]) = cpu_to_le16(parm0);
168 *((__le16*)&command[8]) = cpu_to_le16(parm1);
169 *((__le16*)&command[10])= cpu_to_le16(parm2);
170
171 urb = usb_alloc_urb(0, GFP_ATOMIC);
172 if (!urb) {
173 kfree(command);
174 return -ENOMEM;
175 }
176 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
177 command, 16, zd1201_usbfree, zd);
178 ret = usb_submit_urb(urb, GFP_ATOMIC);
179 if (ret) {
180 kfree(command);
181 usb_free_urb(urb);
182 }
183
184 return ret;
185 }
186
187 /* Callback after sending out a packet */
zd1201_usbtx(struct urb * urb)188 static void zd1201_usbtx(struct urb *urb)
189 {
190 struct zd1201 *zd = urb->context;
191 netif_wake_queue(zd->dev);
192 }
193
194 /* Incoming data */
zd1201_usbrx(struct urb * urb)195 static void zd1201_usbrx(struct urb *urb)
196 {
197 struct zd1201 *zd = urb->context;
198 int free = 0;
199 unsigned char *data = urb->transfer_buffer;
200 struct sk_buff *skb;
201 unsigned char type;
202
203 if (!zd)
204 return;
205
206 switch(urb->status) {
207 case -EILSEQ:
208 case -ENODEV:
209 case -ETIME:
210 case -ENOENT:
211 case -EPIPE:
212 case -EOVERFLOW:
213 case -ESHUTDOWN:
214 dev_warn(&zd->usb->dev, "%s: rx urb failed: %d\n",
215 zd->dev->name, urb->status);
216 free = 1;
217 goto exit;
218 }
219
220 if (urb->status != 0 || urb->actual_length == 0)
221 goto resubmit;
222
223 type = data[0];
224 if (type == ZD1201_PACKET_EVENTSTAT || type == ZD1201_PACKET_RESOURCE) {
225 memcpy(zd->rxdata, data, urb->actual_length);
226 zd->rxlen = urb->actual_length;
227 zd->rxdatas = 1;
228 wake_up(&zd->rxdataq);
229 }
230 /* Info frame */
231 if (type == ZD1201_PACKET_INQUIRE) {
232 int i = 0;
233 unsigned short infotype, copylen;
234 infotype = le16_to_cpu(*(__le16*)&data[6]);
235
236 if (infotype == ZD1201_INF_LINKSTATUS) {
237 short linkstatus;
238
239 linkstatus = le16_to_cpu(*(__le16*)&data[8]);
240 switch(linkstatus) {
241 case 1:
242 netif_carrier_on(zd->dev);
243 break;
244 case 2:
245 netif_carrier_off(zd->dev);
246 break;
247 case 3:
248 netif_carrier_off(zd->dev);
249 break;
250 case 4:
251 netif_carrier_on(zd->dev);
252 break;
253 default:
254 netif_carrier_off(zd->dev);
255 }
256 goto resubmit;
257 }
258 if (infotype == ZD1201_INF_ASSOCSTATUS) {
259 short status = le16_to_cpu(*(__le16*)(data+8));
260 int event;
261 union iwreq_data wrqu;
262
263 switch (status) {
264 case ZD1201_ASSOCSTATUS_STAASSOC:
265 case ZD1201_ASSOCSTATUS_REASSOC:
266 event = IWEVREGISTERED;
267 break;
268 case ZD1201_ASSOCSTATUS_DISASSOC:
269 case ZD1201_ASSOCSTATUS_ASSOCFAIL:
270 case ZD1201_ASSOCSTATUS_AUTHFAIL:
271 default:
272 event = IWEVEXPIRED;
273 }
274 memcpy(wrqu.addr.sa_data, data+10, ETH_ALEN);
275 wrqu.addr.sa_family = ARPHRD_ETHER;
276
277 /* Send event to user space */
278 wireless_send_event(zd->dev, event, &wrqu, NULL);
279
280 goto resubmit;
281 }
282 if (infotype == ZD1201_INF_AUTHREQ) {
283 union iwreq_data wrqu;
284
285 memcpy(wrqu.addr.sa_data, data+8, ETH_ALEN);
286 wrqu.addr.sa_family = ARPHRD_ETHER;
287 /* There isn't a event that trully fits this request.
288 We assume that userspace will be smart enough to
289 see a new station being expired and sends back a
290 authstation ioctl to authorize it. */
291 wireless_send_event(zd->dev, IWEVEXPIRED, &wrqu, NULL);
292 goto resubmit;
293 }
294 /* Other infotypes are handled outside this handler */
295 zd->rxlen = 0;
296 while (i < urb->actual_length) {
297 copylen = le16_to_cpu(*(__le16*)&data[i+2]);
298 /* Sanity check, sometimes we get junk */
299 if (copylen+zd->rxlen > sizeof(zd->rxdata))
300 break;
301 memcpy(zd->rxdata+zd->rxlen, data+i+4, copylen);
302 zd->rxlen += copylen;
303 i += 64;
304 }
305 if (i >= urb->actual_length) {
306 zd->rxdatas = 1;
307 wake_up(&zd->rxdataq);
308 }
309 goto resubmit;
310 }
311 /* Actual data */
312 if (data[urb->actual_length-1] == ZD1201_PACKET_RXDATA) {
313 int datalen = urb->actual_length-1;
314 unsigned short len, fc, seq;
315
316 len = ntohs(*(__be16 *)&data[datalen-2]);
317 if (len>datalen)
318 len=datalen;
319 fc = le16_to_cpu(*(__le16 *)&data[datalen-16]);
320 seq = le16_to_cpu(*(__le16 *)&data[datalen-24]);
321
322 if (zd->monitor) {
323 if (datalen < 24)
324 goto resubmit;
325 if (!(skb = dev_alloc_skb(datalen+24)))
326 goto resubmit;
327
328 skb_put_data(skb, &data[datalen - 16], 2);
329 skb_put_data(skb, &data[datalen - 2], 2);
330 skb_put_data(skb, &data[datalen - 14], 6);
331 skb_put_data(skb, &data[datalen - 22], 6);
332 skb_put_data(skb, &data[datalen - 8], 6);
333 skb_put_data(skb, &data[datalen - 24], 2);
334 skb_put_data(skb, data, len);
335 skb->protocol = eth_type_trans(skb, zd->dev);
336 zd->dev->stats.rx_packets++;
337 zd->dev->stats.rx_bytes += skb->len;
338 netif_rx(skb);
339 goto resubmit;
340 }
341
342 if ((seq & IEEE80211_SCTL_FRAG) ||
343 (fc & IEEE80211_FCTL_MOREFRAGS)) {
344 struct zd1201_frag *frag = NULL;
345 char *ptr;
346
347 if (datalen<14)
348 goto resubmit;
349 if ((seq & IEEE80211_SCTL_FRAG) == 0) {
350 frag = kmalloc(sizeof(*frag), GFP_ATOMIC);
351 if (!frag)
352 goto resubmit;
353 skb = dev_alloc_skb(IEEE80211_MAX_DATA_LEN +14+2);
354 if (!skb) {
355 kfree(frag);
356 goto resubmit;
357 }
358 frag->skb = skb;
359 frag->seq = seq & IEEE80211_SCTL_SEQ;
360 skb_reserve(skb, 2);
361 skb_put_data(skb, &data[datalen - 14], 12);
362 skb_put_data(skb, &data[6], 2);
363 skb_put_data(skb, data + 8, len);
364 hlist_add_head(&frag->fnode, &zd->fraglist);
365 goto resubmit;
366 }
367 hlist_for_each_entry(frag, &zd->fraglist, fnode)
368 if (frag->seq == (seq&IEEE80211_SCTL_SEQ))
369 break;
370 if (!frag)
371 goto resubmit;
372 skb = frag->skb;
373 ptr = skb_put(skb, len);
374 if (ptr)
375 memcpy(ptr, data+8, len);
376 if (fc & IEEE80211_FCTL_MOREFRAGS)
377 goto resubmit;
378 hlist_del_init(&frag->fnode);
379 kfree(frag);
380 } else {
381 if (datalen<14)
382 goto resubmit;
383 skb = dev_alloc_skb(len + 14 + 2);
384 if (!skb)
385 goto resubmit;
386 skb_reserve(skb, 2);
387 skb_put_data(skb, &data[datalen - 14], 12);
388 skb_put_data(skb, &data[6], 2);
389 skb_put_data(skb, data + 8, len);
390 }
391 skb->protocol = eth_type_trans(skb, zd->dev);
392 zd->dev->stats.rx_packets++;
393 zd->dev->stats.rx_bytes += skb->len;
394 netif_rx(skb);
395 }
396 resubmit:
397 memset(data, 0, ZD1201_RXSIZE);
398
399 urb->status = 0;
400 urb->dev = zd->usb;
401 if(usb_submit_urb(urb, GFP_ATOMIC))
402 free = 1;
403
404 exit:
405 if (free) {
406 zd->rxlen = 0;
407 zd->rxdatas = 1;
408 wake_up(&zd->rxdataq);
409 kfree(urb->transfer_buffer);
410 }
411 }
412
zd1201_getconfig(struct zd1201 * zd,int rid,void * riddata,unsigned int riddatalen)413 static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
414 unsigned int riddatalen)
415 {
416 int err;
417 int i = 0;
418 int code;
419 int rid_fid;
420 int length;
421 unsigned char *pdata;
422
423 zd->rxdatas = 0;
424 err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
425 if (err)
426 return err;
427
428 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
429 if (!zd->rxlen)
430 return -EIO;
431
432 code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
433 rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
434 length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
435 if (length > zd->rxlen)
436 length = zd->rxlen-6;
437
438 /* If access bit is not on, then error */
439 if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
440 return -EINVAL;
441
442 /* Not enough buffer for allocating data */
443 if (riddatalen != (length - 4)) {
444 dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
445 riddatalen, zd->rxlen, length, rid, rid_fid);
446 return -ENODATA;
447 }
448
449 zd->rxdatas = 0;
450 /* Issue SetRxRid commnd */
451 err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
452 if (err)
453 return err;
454
455 /* Receive RID record from resource packets */
456 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
457 if (!zd->rxlen)
458 return -EIO;
459
460 if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
461 dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
462 zd->rxdata[zd->rxlen-1]);
463 return -EINVAL;
464 }
465
466 /* Set the data pointer and received data length */
467 pdata = zd->rxdata;
468 length = zd->rxlen;
469
470 do {
471 int actual_length;
472
473 actual_length = (length > 64) ? 64 : length;
474
475 if (pdata[0] != 0x3) {
476 dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
477 pdata[0]);
478 return -EINVAL;
479 }
480
481 if (actual_length != 64) {
482 /* Trim the last packet type byte */
483 actual_length--;
484 }
485
486 /* Skip the 4 bytes header (RID length and RID) */
487 if (i == 0) {
488 pdata += 8;
489 actual_length -= 8;
490 } else {
491 pdata += 4;
492 actual_length -= 4;
493 }
494
495 memcpy(riddata, pdata, actual_length);
496 riddata += actual_length;
497 pdata += actual_length;
498 length -= 64;
499 i++;
500 } while (length > 0);
501
502 return 0;
503 }
504
505 /*
506 * resreq:
507 * byte type
508 * byte sequence
509 * u16 reserved
510 * byte data[12]
511 * total: 16
512 */
zd1201_setconfig(struct zd1201 * zd,int rid,void * buf,int len,int wait)513 static int zd1201_setconfig(struct zd1201 *zd, int rid, void *buf, int len, int wait)
514 {
515 int err;
516 unsigned char *request;
517 int reqlen;
518 char seq=0;
519 struct urb *urb;
520 gfp_t gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
521
522 len += 4; /* first 4 are for header */
523
524 zd->rxdatas = 0;
525 zd->rxlen = 0;
526 for (seq=0; len > 0; seq++) {
527 request = kmalloc(16, gfp_mask);
528 if (!request)
529 return -ENOMEM;
530 urb = usb_alloc_urb(0, gfp_mask);
531 if (!urb) {
532 kfree(request);
533 return -ENOMEM;
534 }
535 memset(request, 0, 16);
536 reqlen = len>12 ? 12 : len;
537 request[0] = ZD1201_USB_RESREQ;
538 request[1] = seq;
539 request[2] = 0;
540 request[3] = 0;
541 if (request[1] == 0) {
542 /* add header */
543 *(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
544 *(__le16*)&request[6] = cpu_to_le16(rid);
545 memcpy(request+8, buf, reqlen-4);
546 buf += reqlen-4;
547 } else {
548 memcpy(request+4, buf, reqlen);
549 buf += reqlen;
550 }
551
552 len -= reqlen;
553
554 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
555 zd->endp_out2), request, 16, zd1201_usbfree, zd);
556 err = usb_submit_urb(urb, gfp_mask);
557 if (err)
558 goto err;
559 }
560
561 request = kmalloc(16, gfp_mask);
562 if (!request)
563 return -ENOMEM;
564 urb = usb_alloc_urb(0, gfp_mask);
565 if (!urb) {
566 kfree(request);
567 return -ENOMEM;
568 }
569 *((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
570 *((__le16*)&request[4]) =
571 cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
572 *((__le16*)&request[6]) = cpu_to_le16(rid);
573 *((__le16*)&request[8]) = cpu_to_le16(0);
574 *((__le16*)&request[10]) = cpu_to_le16(0);
575 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
576 request, 16, zd1201_usbfree, zd);
577 err = usb_submit_urb(urb, gfp_mask);
578 if (err)
579 goto err;
580
581 if (wait) {
582 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
583 if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
584 dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
585 }
586 }
587
588 return 0;
589 err:
590 kfree(request);
591 usb_free_urb(urb);
592 return err;
593 }
594
zd1201_getconfig16(struct zd1201 * zd,int rid,short * val)595 static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
596 {
597 int err;
598 __le16 zdval;
599
600 err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
601 if (err)
602 return err;
603 *val = le16_to_cpu(zdval);
604 return 0;
605 }
606
zd1201_setconfig16(struct zd1201 * zd,int rid,short val)607 static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
608 {
609 __le16 zdval = cpu_to_le16(val);
610 return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
611 }
612
zd1201_drvr_start(struct zd1201 * zd)613 static int zd1201_drvr_start(struct zd1201 *zd)
614 {
615 int err, i;
616 short max;
617 __le16 zdmax;
618 unsigned char *buffer;
619
620 buffer = kzalloc(ZD1201_RXSIZE, GFP_KERNEL);
621 if (!buffer)
622 return -ENOMEM;
623
624 usb_fill_bulk_urb(zd->rx_urb, zd->usb,
625 usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
626 zd1201_usbrx, zd);
627
628 err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
629 if (err)
630 goto err_buffer;
631
632 err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
633 if (err)
634 goto err_urb;
635
636 err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
637 sizeof(__le16));
638 if (err)
639 goto err_urb;
640
641 max = le16_to_cpu(zdmax);
642 for (i=0; i<max; i++) {
643 err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
644 if (err)
645 goto err_urb;
646 }
647
648 return 0;
649
650 err_urb:
651 usb_kill_urb(zd->rx_urb);
652 return err;
653 err_buffer:
654 kfree(buffer);
655 return err;
656 }
657
658 /* Magic alert: The firmware doesn't seem to like the MAC state being
659 * toggled in promisc (aka monitor) mode.
660 * (It works a number of times, but will halt eventually)
661 * So we turn it of before disabling and on after enabling if needed.
662 */
zd1201_enable(struct zd1201 * zd)663 static int zd1201_enable(struct zd1201 *zd)
664 {
665 int err;
666
667 if (zd->mac_enabled)
668 return 0;
669
670 err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
671 if (!err)
672 zd->mac_enabled = 1;
673
674 if (zd->monitor)
675 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
676
677 return err;
678 }
679
zd1201_disable(struct zd1201 * zd)680 static int zd1201_disable(struct zd1201 *zd)
681 {
682 int err;
683
684 if (!zd->mac_enabled)
685 return 0;
686 if (zd->monitor) {
687 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
688 if (err)
689 return err;
690 }
691
692 err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
693 if (!err)
694 zd->mac_enabled = 0;
695 return err;
696 }
697
zd1201_mac_reset(struct zd1201 * zd)698 static int zd1201_mac_reset(struct zd1201 *zd)
699 {
700 if (!zd->mac_enabled)
701 return 0;
702 zd1201_disable(zd);
703 return zd1201_enable(zd);
704 }
705
zd1201_join(struct zd1201 * zd,char * essid,int essidlen)706 static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
707 {
708 int err, val;
709 char buf[IW_ESSID_MAX_SIZE+2];
710
711 err = zd1201_disable(zd);
712 if (err)
713 return err;
714
715 val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
716 val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
717 err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
718 if (err)
719 return err;
720
721 *(__le16 *)buf = cpu_to_le16(essidlen);
722 memcpy(buf+2, essid, essidlen);
723 if (!zd->ap) { /* Normal station */
724 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
725 IW_ESSID_MAX_SIZE+2, 1);
726 if (err)
727 return err;
728 } else { /* AP */
729 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
730 IW_ESSID_MAX_SIZE+2, 1);
731 if (err)
732 return err;
733 }
734
735 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
736 zd->dev->dev_addr, zd->dev->addr_len, 1);
737 if (err)
738 return err;
739
740 err = zd1201_enable(zd);
741 if (err)
742 return err;
743
744 msleep(100);
745 return 0;
746 }
747
zd1201_net_open(struct net_device * dev)748 static int zd1201_net_open(struct net_device *dev)
749 {
750 struct zd1201 *zd = netdev_priv(dev);
751
752 /* Start MAC with wildcard if no essid set */
753 if (!zd->mac_enabled)
754 zd1201_join(zd, zd->essid, zd->essidlen);
755 netif_start_queue(dev);
756
757 return 0;
758 }
759
zd1201_net_stop(struct net_device * dev)760 static int zd1201_net_stop(struct net_device *dev)
761 {
762 netif_stop_queue(dev);
763 return 0;
764 }
765
766 /*
767 RFC 1042 encapsulates Ethernet frames in 802.11 frames
768 by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
769 (0x00, 0x00, 0x00). Zd requires an additional padding, copy
770 of ethernet addresses, length of the standard RFC 1042 packet
771 and a command byte (which is nul for tx).
772
773 tx frame (from Wlan NG):
774 RFC 1042:
775 llc 0xAA 0xAA 0x03 (802.2 LLC)
776 snap 0x00 0x00 0x00 (Ethernet encapsulated)
777 type 2 bytes, Ethernet type field
778 payload (minus eth header)
779 Zydas specific:
780 padding 1B if (skb->len+8+1)%64==0
781 Eth MAC addr 12 bytes, Ethernet MAC addresses
782 length 2 bytes, RFC 1042 packet length
783 (llc+snap+type+payload)
784 zd 1 null byte, zd1201 packet type
785 */
zd1201_hard_start_xmit(struct sk_buff * skb,struct net_device * dev)786 static netdev_tx_t zd1201_hard_start_xmit(struct sk_buff *skb,
787 struct net_device *dev)
788 {
789 struct zd1201 *zd = netdev_priv(dev);
790 unsigned char *txbuf = zd->txdata;
791 int txbuflen, pad = 0, err;
792 struct urb *urb = zd->tx_urb;
793
794 if (!zd->mac_enabled || zd->monitor) {
795 dev->stats.tx_dropped++;
796 kfree_skb(skb);
797 return NETDEV_TX_OK;
798 }
799 netif_stop_queue(dev);
800
801 txbuflen = skb->len + 8 + 1;
802 if (txbuflen%64 == 0) {
803 pad = 1;
804 txbuflen++;
805 }
806 txbuf[0] = 0xAA;
807 txbuf[1] = 0xAA;
808 txbuf[2] = 0x03;
809 txbuf[3] = 0x00; /* rfc1042 */
810 txbuf[4] = 0x00;
811 txbuf[5] = 0x00;
812
813 skb_copy_from_linear_data_offset(skb, 12, txbuf + 6, skb->len - 12);
814 if (pad)
815 txbuf[skb->len-12+6]=0;
816 skb_copy_from_linear_data(skb, txbuf + skb->len - 12 + 6 + pad, 12);
817 *(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
818 txbuf[txbuflen-1] = 0;
819
820 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
821 txbuf, txbuflen, zd1201_usbtx, zd);
822
823 err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
824 if (err) {
825 dev->stats.tx_errors++;
826 netif_start_queue(dev);
827 } else {
828 dev->stats.tx_packets++;
829 dev->stats.tx_bytes += skb->len;
830 }
831 kfree_skb(skb);
832
833 return NETDEV_TX_OK;
834 }
835
zd1201_tx_timeout(struct net_device * dev)836 static void zd1201_tx_timeout(struct net_device *dev)
837 {
838 struct zd1201 *zd = netdev_priv(dev);
839
840 if (!zd)
841 return;
842 dev_warn(&zd->usb->dev, "%s: TX timeout, shooting down urb\n",
843 dev->name);
844 usb_unlink_urb(zd->tx_urb);
845 dev->stats.tx_errors++;
846 /* Restart the timeout to quiet the watchdog: */
847 netif_trans_update(dev); /* prevent tx timeout */
848 }
849
zd1201_set_mac_address(struct net_device * dev,void * p)850 static int zd1201_set_mac_address(struct net_device *dev, void *p)
851 {
852 struct sockaddr *addr = p;
853 struct zd1201 *zd = netdev_priv(dev);
854 int err;
855
856 if (!zd)
857 return -ENODEV;
858
859 err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR,
860 addr->sa_data, dev->addr_len, 1);
861 if (err)
862 return err;
863 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
864
865 return zd1201_mac_reset(zd);
866 }
867
zd1201_get_wireless_stats(struct net_device * dev)868 static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
869 {
870 struct zd1201 *zd = netdev_priv(dev);
871
872 return &zd->iwstats;
873 }
874
zd1201_set_multicast(struct net_device * dev)875 static void zd1201_set_multicast(struct net_device *dev)
876 {
877 struct zd1201 *zd = netdev_priv(dev);
878 struct netdev_hw_addr *ha;
879 unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
880 int i;
881
882 if (netdev_mc_count(dev) > ZD1201_MAXMULTI)
883 return;
884
885 i = 0;
886 netdev_for_each_mc_addr(ha, dev)
887 memcpy(reqbuf + i++ * ETH_ALEN, ha->addr, ETH_ALEN);
888 zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
889 netdev_mc_count(dev) * ETH_ALEN, 0);
890 }
891
zd1201_config_commit(struct net_device * dev,struct iw_request_info * info,struct iw_point * data,char * essid)892 static int zd1201_config_commit(struct net_device *dev,
893 struct iw_request_info *info, struct iw_point *data, char *essid)
894 {
895 struct zd1201 *zd = netdev_priv(dev);
896
897 return zd1201_mac_reset(zd);
898 }
899
zd1201_get_name(struct net_device * dev,struct iw_request_info * info,char * name,char * extra)900 static int zd1201_get_name(struct net_device *dev,
901 struct iw_request_info *info, char *name, char *extra)
902 {
903 strcpy(name, "IEEE 802.11b");
904 return 0;
905 }
906
zd1201_set_freq(struct net_device * dev,struct iw_request_info * info,struct iw_freq * freq,char * extra)907 static int zd1201_set_freq(struct net_device *dev,
908 struct iw_request_info *info, struct iw_freq *freq, char *extra)
909 {
910 struct zd1201 *zd = netdev_priv(dev);
911 short channel = 0;
912 int err;
913
914 if (freq->e == 0)
915 channel = freq->m;
916 else
917 channel = ieee80211_frequency_to_channel(freq->m);
918
919 err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
920 if (err)
921 return err;
922
923 zd1201_mac_reset(zd);
924
925 return 0;
926 }
927
zd1201_get_freq(struct net_device * dev,struct iw_request_info * info,struct iw_freq * freq,char * extra)928 static int zd1201_get_freq(struct net_device *dev,
929 struct iw_request_info *info, struct iw_freq *freq, char *extra)
930 {
931 struct zd1201 *zd = netdev_priv(dev);
932 short channel;
933 int err;
934
935 err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
936 if (err)
937 return err;
938 freq->e = 0;
939 freq->m = channel;
940
941 return 0;
942 }
943
zd1201_set_mode(struct net_device * dev,struct iw_request_info * info,__u32 * mode,char * extra)944 static int zd1201_set_mode(struct net_device *dev,
945 struct iw_request_info *info, __u32 *mode, char *extra)
946 {
947 struct zd1201 *zd = netdev_priv(dev);
948 short porttype, monitor = 0;
949 unsigned char buffer[IW_ESSID_MAX_SIZE+2];
950 int err;
951
952 if (zd->ap) {
953 if (*mode != IW_MODE_MASTER)
954 return -EINVAL;
955 return 0;
956 }
957
958 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
959 if (err)
960 return err;
961 zd->dev->type = ARPHRD_ETHER;
962 switch(*mode) {
963 case IW_MODE_MONITOR:
964 monitor = 1;
965 zd->dev->type = ARPHRD_IEEE80211;
966 /* Make sure we are no longer associated with by
967 setting an 'impossible' essid.
968 (otherwise we mess up firmware)
969 */
970 zd1201_join(zd, "\0-*#\0", 5);
971 /* Put port in pIBSS */
972 case 8: /* No pseudo-IBSS in wireless extensions (yet) */
973 porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
974 break;
975 case IW_MODE_ADHOC:
976 porttype = ZD1201_PORTTYPE_IBSS;
977 break;
978 case IW_MODE_INFRA:
979 porttype = ZD1201_PORTTYPE_BSS;
980 break;
981 default:
982 return -EINVAL;
983 }
984
985 err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
986 if (err)
987 return err;
988 if (zd->monitor && !monitor) {
989 zd1201_disable(zd);
990 *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
991 memcpy(buffer+2, zd->essid, zd->essidlen);
992 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
993 buffer, IW_ESSID_MAX_SIZE+2, 1);
994 if (err)
995 return err;
996 }
997 zd->monitor = monitor;
998 /* If monitor mode is set we don't actually turn it on here since it
999 * is done during mac reset anyway (see zd1201_mac_enable).
1000 */
1001 zd1201_mac_reset(zd);
1002
1003 return 0;
1004 }
1005
zd1201_get_mode(struct net_device * dev,struct iw_request_info * info,__u32 * mode,char * extra)1006 static int zd1201_get_mode(struct net_device *dev,
1007 struct iw_request_info *info, __u32 *mode, char *extra)
1008 {
1009 struct zd1201 *zd = netdev_priv(dev);
1010 short porttype;
1011 int err;
1012
1013 err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1014 if (err)
1015 return err;
1016 switch(porttype) {
1017 case ZD1201_PORTTYPE_IBSS:
1018 *mode = IW_MODE_ADHOC;
1019 break;
1020 case ZD1201_PORTTYPE_BSS:
1021 *mode = IW_MODE_INFRA;
1022 break;
1023 case ZD1201_PORTTYPE_WDS:
1024 *mode = IW_MODE_REPEAT;
1025 break;
1026 case ZD1201_PORTTYPE_PSEUDOIBSS:
1027 *mode = 8;/* No Pseudo-IBSS... */
1028 break;
1029 case ZD1201_PORTTYPE_AP:
1030 *mode = IW_MODE_MASTER;
1031 break;
1032 default:
1033 dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1034 porttype);
1035 *mode = IW_MODE_AUTO;
1036 }
1037 if (zd->monitor)
1038 *mode = IW_MODE_MONITOR;
1039
1040 return 0;
1041 }
1042
zd1201_get_range(struct net_device * dev,struct iw_request_info * info,struct iw_point * wrq,char * extra)1043 static int zd1201_get_range(struct net_device *dev,
1044 struct iw_request_info *info, struct iw_point *wrq, char *extra)
1045 {
1046 struct iw_range *range = (struct iw_range *)extra;
1047
1048 wrq->length = sizeof(struct iw_range);
1049 memset(range, 0, sizeof(struct iw_range));
1050 range->we_version_compiled = WIRELESS_EXT;
1051 range->we_version_source = WIRELESS_EXT;
1052
1053 range->max_qual.qual = 128;
1054 range->max_qual.level = 128;
1055 range->max_qual.noise = 128;
1056 range->max_qual.updated = 7;
1057
1058 range->encoding_size[0] = 5;
1059 range->encoding_size[1] = 13;
1060 range->num_encoding_sizes = 2;
1061 range->max_encoding_tokens = ZD1201_NUMKEYS;
1062
1063 range->num_bitrates = 4;
1064 range->bitrate[0] = 1000000;
1065 range->bitrate[1] = 2000000;
1066 range->bitrate[2] = 5500000;
1067 range->bitrate[3] = 11000000;
1068
1069 range->min_rts = 0;
1070 range->min_frag = ZD1201_FRAGMIN;
1071 range->max_rts = ZD1201_RTSMAX;
1072 range->min_frag = ZD1201_FRAGMAX;
1073
1074 return 0;
1075 }
1076
1077 /* Little bit of magic here: we only get the quality if we poll
1078 * for it, and we never get an actual request to trigger such
1079 * a poll. Therefore we 'assume' that the user will soon ask for
1080 * the stats after asking the bssid.
1081 */
zd1201_get_wap(struct net_device * dev,struct iw_request_info * info,struct sockaddr * ap_addr,char * extra)1082 static int zd1201_get_wap(struct net_device *dev,
1083 struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1084 {
1085 struct zd1201 *zd = netdev_priv(dev);
1086 unsigned char buffer[6];
1087
1088 if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1089 /* Unfortunately the quality and noise reported is useless.
1090 they seem to be accumulators that increase until you
1091 read them, unless we poll on a fixed interval we can't
1092 use them
1093 */
1094 /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1095 zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1096 /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1097 zd->iwstats.qual.updated = 2;
1098 }
1099
1100 return zd1201_getconfig(zd, ZD1201_RID_CURRENTBSSID, ap_addr->sa_data, 6);
1101 }
1102
zd1201_set_scan(struct net_device * dev,struct iw_request_info * info,struct iw_point * srq,char * extra)1103 static int zd1201_set_scan(struct net_device *dev,
1104 struct iw_request_info *info, struct iw_point *srq, char *extra)
1105 {
1106 /* We do everything in get_scan */
1107 return 0;
1108 }
1109
zd1201_get_scan(struct net_device * dev,struct iw_request_info * info,struct iw_point * srq,char * extra)1110 static int zd1201_get_scan(struct net_device *dev,
1111 struct iw_request_info *info, struct iw_point *srq, char *extra)
1112 {
1113 struct zd1201 *zd = netdev_priv(dev);
1114 int err, i, j, enabled_save;
1115 struct iw_event iwe;
1116 char *cev = extra;
1117 char *end_buf = extra + IW_SCAN_MAX_DATA;
1118
1119 /* No scanning in AP mode */
1120 if (zd->ap)
1121 return -EOPNOTSUPP;
1122
1123 /* Scan doesn't seem to work if disabled */
1124 enabled_save = zd->mac_enabled;
1125 zd1201_enable(zd);
1126
1127 zd->rxdatas = 0;
1128 err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE,
1129 ZD1201_INQ_SCANRESULTS, 0, 0);
1130 if (err)
1131 return err;
1132
1133 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1134 if (!zd->rxlen)
1135 return -EIO;
1136
1137 if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1138 return -EIO;
1139
1140 for(i=8; i<zd->rxlen; i+=62) {
1141 iwe.cmd = SIOCGIWAP;
1142 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1143 memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1144 cev = iwe_stream_add_event(info, cev, end_buf,
1145 &iwe, IW_EV_ADDR_LEN);
1146
1147 iwe.cmd = SIOCGIWESSID;
1148 iwe.u.data.length = zd->rxdata[i+16];
1149 iwe.u.data.flags = 1;
1150 cev = iwe_stream_add_point(info, cev, end_buf,
1151 &iwe, zd->rxdata+i+18);
1152
1153 iwe.cmd = SIOCGIWMODE;
1154 if (zd->rxdata[i+14]&0x01)
1155 iwe.u.mode = IW_MODE_MASTER;
1156 else
1157 iwe.u.mode = IW_MODE_ADHOC;
1158 cev = iwe_stream_add_event(info, cev, end_buf,
1159 &iwe, IW_EV_UINT_LEN);
1160
1161 iwe.cmd = SIOCGIWFREQ;
1162 iwe.u.freq.m = zd->rxdata[i+0];
1163 iwe.u.freq.e = 0;
1164 cev = iwe_stream_add_event(info, cev, end_buf,
1165 &iwe, IW_EV_FREQ_LEN);
1166
1167 iwe.cmd = SIOCGIWRATE;
1168 iwe.u.bitrate.fixed = 0;
1169 iwe.u.bitrate.disabled = 0;
1170 for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
1171 iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
1172 cev = iwe_stream_add_event(info, cev, end_buf,
1173 &iwe, IW_EV_PARAM_LEN);
1174 }
1175
1176 iwe.cmd = SIOCGIWENCODE;
1177 iwe.u.data.length = 0;
1178 if (zd->rxdata[i+14]&0x10)
1179 iwe.u.data.flags = IW_ENCODE_ENABLED;
1180 else
1181 iwe.u.data.flags = IW_ENCODE_DISABLED;
1182 cev = iwe_stream_add_point(info, cev, end_buf, &iwe, NULL);
1183
1184 iwe.cmd = IWEVQUAL;
1185 iwe.u.qual.qual = zd->rxdata[i+4];
1186 iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
1187 iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
1188 iwe.u.qual.updated = 7;
1189 cev = iwe_stream_add_event(info, cev, end_buf,
1190 &iwe, IW_EV_QUAL_LEN);
1191 }
1192
1193 if (!enabled_save)
1194 zd1201_disable(zd);
1195
1196 srq->length = cev - extra;
1197 srq->flags = 0;
1198
1199 return 0;
1200 }
1201
zd1201_set_essid(struct net_device * dev,struct iw_request_info * info,struct iw_point * data,char * essid)1202 static int zd1201_set_essid(struct net_device *dev,
1203 struct iw_request_info *info, struct iw_point *data, char *essid)
1204 {
1205 struct zd1201 *zd = netdev_priv(dev);
1206
1207 if (data->length > IW_ESSID_MAX_SIZE)
1208 return -EINVAL;
1209 if (data->length < 1)
1210 data->length = 1;
1211 zd->essidlen = data->length;
1212 memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1213 memcpy(zd->essid, essid, data->length);
1214 return zd1201_join(zd, zd->essid, zd->essidlen);
1215 }
1216
zd1201_get_essid(struct net_device * dev,struct iw_request_info * info,struct iw_point * data,char * essid)1217 static int zd1201_get_essid(struct net_device *dev,
1218 struct iw_request_info *info, struct iw_point *data, char *essid)
1219 {
1220 struct zd1201 *zd = netdev_priv(dev);
1221
1222 memcpy(essid, zd->essid, zd->essidlen);
1223 data->flags = 1;
1224 data->length = zd->essidlen;
1225
1226 return 0;
1227 }
1228
zd1201_get_nick(struct net_device * dev,struct iw_request_info * info,struct iw_point * data,char * nick)1229 static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1230 struct iw_point *data, char *nick)
1231 {
1232 strcpy(nick, "zd1201");
1233 data->flags = 1;
1234 data->length = strlen(nick);
1235 return 0;
1236 }
1237
zd1201_set_rate(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1238 static int zd1201_set_rate(struct net_device *dev,
1239 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1240 {
1241 struct zd1201 *zd = netdev_priv(dev);
1242 short rate;
1243 int err;
1244
1245 switch (rrq->value) {
1246 case 1000000:
1247 rate = ZD1201_RATEB1;
1248 break;
1249 case 2000000:
1250 rate = ZD1201_RATEB2;
1251 break;
1252 case 5500000:
1253 rate = ZD1201_RATEB5;
1254 break;
1255 case 11000000:
1256 default:
1257 rate = ZD1201_RATEB11;
1258 break;
1259 }
1260 if (!rrq->fixed) { /* Also enable all lower bitrates */
1261 rate |= rate-1;
1262 }
1263
1264 err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1265 if (err)
1266 return err;
1267
1268 return zd1201_mac_reset(zd);
1269 }
1270
zd1201_get_rate(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1271 static int zd1201_get_rate(struct net_device *dev,
1272 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1273 {
1274 struct zd1201 *zd = netdev_priv(dev);
1275 short rate;
1276 int err;
1277
1278 err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1279 if (err)
1280 return err;
1281
1282 switch(rate) {
1283 case 1:
1284 rrq->value = 1000000;
1285 break;
1286 case 2:
1287 rrq->value = 2000000;
1288 break;
1289 case 5:
1290 rrq->value = 5500000;
1291 break;
1292 case 11:
1293 rrq->value = 11000000;
1294 break;
1295 default:
1296 rrq->value = 0;
1297 }
1298 rrq->fixed = 0;
1299 rrq->disabled = 0;
1300
1301 return 0;
1302 }
1303
zd1201_set_rts(struct net_device * dev,struct iw_request_info * info,struct iw_param * rts,char * extra)1304 static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1305 struct iw_param *rts, char *extra)
1306 {
1307 struct zd1201 *zd = netdev_priv(dev);
1308 int err;
1309 short val = rts->value;
1310
1311 if (rts->disabled || !rts->fixed)
1312 val = ZD1201_RTSMAX;
1313 if (val > ZD1201_RTSMAX)
1314 return -EINVAL;
1315 if (val < 0)
1316 return -EINVAL;
1317
1318 err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1319 if (err)
1320 return err;
1321 return zd1201_mac_reset(zd);
1322 }
1323
zd1201_get_rts(struct net_device * dev,struct iw_request_info * info,struct iw_param * rts,char * extra)1324 static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1325 struct iw_param *rts, char *extra)
1326 {
1327 struct zd1201 *zd = netdev_priv(dev);
1328 short rtst;
1329 int err;
1330
1331 err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1332 if (err)
1333 return err;
1334 rts->value = rtst;
1335 rts->disabled = (rts->value == ZD1201_RTSMAX);
1336 rts->fixed = 1;
1337
1338 return 0;
1339 }
1340
zd1201_set_frag(struct net_device * dev,struct iw_request_info * info,struct iw_param * frag,char * extra)1341 static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1342 struct iw_param *frag, char *extra)
1343 {
1344 struct zd1201 *zd = netdev_priv(dev);
1345 int err;
1346 short val = frag->value;
1347
1348 if (frag->disabled || !frag->fixed)
1349 val = ZD1201_FRAGMAX;
1350 if (val > ZD1201_FRAGMAX)
1351 return -EINVAL;
1352 if (val < ZD1201_FRAGMIN)
1353 return -EINVAL;
1354 if (val & 1)
1355 return -EINVAL;
1356 err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1357 if (err)
1358 return err;
1359 return zd1201_mac_reset(zd);
1360 }
1361
zd1201_get_frag(struct net_device * dev,struct iw_request_info * info,struct iw_param * frag,char * extra)1362 static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1363 struct iw_param *frag, char *extra)
1364 {
1365 struct zd1201 *zd = netdev_priv(dev);
1366 short fragt;
1367 int err;
1368
1369 err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1370 if (err)
1371 return err;
1372 frag->value = fragt;
1373 frag->disabled = (frag->value == ZD1201_FRAGMAX);
1374 frag->fixed = 1;
1375
1376 return 0;
1377 }
1378
zd1201_set_retry(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1379 static int zd1201_set_retry(struct net_device *dev,
1380 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1381 {
1382 return 0;
1383 }
1384
zd1201_get_retry(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1385 static int zd1201_get_retry(struct net_device *dev,
1386 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1387 {
1388 return 0;
1389 }
1390
zd1201_set_encode(struct net_device * dev,struct iw_request_info * info,struct iw_point * erq,char * key)1391 static int zd1201_set_encode(struct net_device *dev,
1392 struct iw_request_info *info, struct iw_point *erq, char *key)
1393 {
1394 struct zd1201 *zd = netdev_priv(dev);
1395 short i;
1396 int err, rid;
1397
1398 if (erq->length > ZD1201_MAXKEYLEN)
1399 return -EINVAL;
1400
1401 i = (erq->flags & IW_ENCODE_INDEX)-1;
1402 if (i == -1) {
1403 err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1404 if (err)
1405 return err;
1406 } else {
1407 err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1408 if (err)
1409 return err;
1410 }
1411
1412 if (i < 0 || i >= ZD1201_NUMKEYS)
1413 return -EINVAL;
1414
1415 rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1416 err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1417 if (err)
1418 return err;
1419 zd->encode_keylen[i] = erq->length;
1420 memcpy(zd->encode_keys[i], key, erq->length);
1421
1422 i=0;
1423 if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1424 i |= 0x01;
1425 zd->encode_enabled = 1;
1426 } else
1427 zd->encode_enabled = 0;
1428 if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1429 i |= 0x02;
1430 zd->encode_restricted = 1;
1431 } else
1432 zd->encode_restricted = 0;
1433 err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1434 if (err)
1435 return err;
1436
1437 if (zd->encode_enabled)
1438 i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1439 else
1440 i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1441 err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1442 if (err)
1443 return err;
1444
1445 return zd1201_mac_reset(zd);
1446 }
1447
zd1201_get_encode(struct net_device * dev,struct iw_request_info * info,struct iw_point * erq,char * key)1448 static int zd1201_get_encode(struct net_device *dev,
1449 struct iw_request_info *info, struct iw_point *erq, char *key)
1450 {
1451 struct zd1201 *zd = netdev_priv(dev);
1452 short i;
1453 int err;
1454
1455 if (zd->encode_enabled)
1456 erq->flags = IW_ENCODE_ENABLED;
1457 else
1458 erq->flags = IW_ENCODE_DISABLED;
1459 if (zd->encode_restricted)
1460 erq->flags |= IW_ENCODE_RESTRICTED;
1461 else
1462 erq->flags |= IW_ENCODE_OPEN;
1463
1464 i = (erq->flags & IW_ENCODE_INDEX) -1;
1465 if (i == -1) {
1466 err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1467 if (err)
1468 return err;
1469 }
1470 if (i<0 || i>= ZD1201_NUMKEYS)
1471 return -EINVAL;
1472
1473 erq->flags |= i+1;
1474
1475 erq->length = zd->encode_keylen[i];
1476 memcpy(key, zd->encode_keys[i], erq->length);
1477
1478 return 0;
1479 }
1480
zd1201_set_power(struct net_device * dev,struct iw_request_info * info,struct iw_param * vwrq,char * extra)1481 static int zd1201_set_power(struct net_device *dev,
1482 struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1483 {
1484 struct zd1201 *zd = netdev_priv(dev);
1485 short enabled, duration, level;
1486 int err;
1487
1488 enabled = vwrq->disabled ? 0 : 1;
1489 if (enabled) {
1490 if (vwrq->flags & IW_POWER_PERIOD) {
1491 duration = vwrq->value;
1492 err = zd1201_setconfig16(zd,
1493 ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1494 if (err)
1495 return err;
1496 goto out;
1497 }
1498 if (vwrq->flags & IW_POWER_TIMEOUT) {
1499 err = zd1201_getconfig16(zd,
1500 ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1501 if (err)
1502 return err;
1503 level = vwrq->value * 4 / duration;
1504 if (level > 4)
1505 level = 4;
1506 if (level < 0)
1507 level = 0;
1508 err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1509 level);
1510 if (err)
1511 return err;
1512 goto out;
1513 }
1514 return -EINVAL;
1515 }
1516 out:
1517 return zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1518 }
1519
zd1201_get_power(struct net_device * dev,struct iw_request_info * info,struct iw_param * vwrq,char * extra)1520 static int zd1201_get_power(struct net_device *dev,
1521 struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1522 {
1523 struct zd1201 *zd = netdev_priv(dev);
1524 short enabled, level, duration;
1525 int err;
1526
1527 err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1528 if (err)
1529 return err;
1530 err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1531 if (err)
1532 return err;
1533 err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1534 if (err)
1535 return err;
1536 vwrq->disabled = enabled ? 0 : 1;
1537 if (vwrq->flags & IW_POWER_TYPE) {
1538 if (vwrq->flags & IW_POWER_PERIOD) {
1539 vwrq->value = duration;
1540 vwrq->flags = IW_POWER_PERIOD;
1541 } else {
1542 vwrq->value = duration * level / 4;
1543 vwrq->flags = IW_POWER_TIMEOUT;
1544 }
1545 }
1546 if (vwrq->flags & IW_POWER_MODE) {
1547 if (enabled && level)
1548 vwrq->flags = IW_POWER_UNICAST_R;
1549 else
1550 vwrq->flags = IW_POWER_ALL_R;
1551 }
1552
1553 return 0;
1554 }
1555
1556
1557 static const iw_handler zd1201_iw_handler[] =
1558 {
1559 (iw_handler) zd1201_config_commit, /* SIOCSIWCOMMIT */
1560 (iw_handler) zd1201_get_name, /* SIOCGIWNAME */
1561 (iw_handler) NULL, /* SIOCSIWNWID */
1562 (iw_handler) NULL, /* SIOCGIWNWID */
1563 (iw_handler) zd1201_set_freq, /* SIOCSIWFREQ */
1564 (iw_handler) zd1201_get_freq, /* SIOCGIWFREQ */
1565 (iw_handler) zd1201_set_mode, /* SIOCSIWMODE */
1566 (iw_handler) zd1201_get_mode, /* SIOCGIWMODE */
1567 (iw_handler) NULL, /* SIOCSIWSENS */
1568 (iw_handler) NULL, /* SIOCGIWSENS */
1569 (iw_handler) NULL, /* SIOCSIWRANGE */
1570 (iw_handler) zd1201_get_range, /* SIOCGIWRANGE */
1571 (iw_handler) NULL, /* SIOCSIWPRIV */
1572 (iw_handler) NULL, /* SIOCGIWPRIV */
1573 (iw_handler) NULL, /* SIOCSIWSTATS */
1574 (iw_handler) NULL, /* SIOCGIWSTATS */
1575 (iw_handler) NULL, /* SIOCSIWSPY */
1576 (iw_handler) NULL, /* SIOCGIWSPY */
1577 (iw_handler) NULL, /* -- hole -- */
1578 (iw_handler) NULL, /* -- hole -- */
1579 (iw_handler) NULL/*zd1201_set_wap*/, /* SIOCSIWAP */
1580 (iw_handler) zd1201_get_wap, /* SIOCGIWAP */
1581 (iw_handler) NULL, /* -- hole -- */
1582 (iw_handler) NULL, /* SIOCGIWAPLIST */
1583 (iw_handler) zd1201_set_scan, /* SIOCSIWSCAN */
1584 (iw_handler) zd1201_get_scan, /* SIOCGIWSCAN */
1585 (iw_handler) zd1201_set_essid, /* SIOCSIWESSID */
1586 (iw_handler) zd1201_get_essid, /* SIOCGIWESSID */
1587 (iw_handler) NULL, /* SIOCSIWNICKN */
1588 (iw_handler) zd1201_get_nick, /* SIOCGIWNICKN */
1589 (iw_handler) NULL, /* -- hole -- */
1590 (iw_handler) NULL, /* -- hole -- */
1591 (iw_handler) zd1201_set_rate, /* SIOCSIWRATE */
1592 (iw_handler) zd1201_get_rate, /* SIOCGIWRATE */
1593 (iw_handler) zd1201_set_rts, /* SIOCSIWRTS */
1594 (iw_handler) zd1201_get_rts, /* SIOCGIWRTS */
1595 (iw_handler) zd1201_set_frag, /* SIOCSIWFRAG */
1596 (iw_handler) zd1201_get_frag, /* SIOCGIWFRAG */
1597 (iw_handler) NULL, /* SIOCSIWTXPOW */
1598 (iw_handler) NULL, /* SIOCGIWTXPOW */
1599 (iw_handler) zd1201_set_retry, /* SIOCSIWRETRY */
1600 (iw_handler) zd1201_get_retry, /* SIOCGIWRETRY */
1601 (iw_handler) zd1201_set_encode, /* SIOCSIWENCODE */
1602 (iw_handler) zd1201_get_encode, /* SIOCGIWENCODE */
1603 (iw_handler) zd1201_set_power, /* SIOCSIWPOWER */
1604 (iw_handler) zd1201_get_power, /* SIOCGIWPOWER */
1605 };
1606
zd1201_set_hostauth(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1607 static int zd1201_set_hostauth(struct net_device *dev,
1608 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1609 {
1610 struct zd1201 *zd = netdev_priv(dev);
1611
1612 if (!zd->ap)
1613 return -EOPNOTSUPP;
1614
1615 return zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1616 }
1617
zd1201_get_hostauth(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1618 static int zd1201_get_hostauth(struct net_device *dev,
1619 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1620 {
1621 struct zd1201 *zd = netdev_priv(dev);
1622 short hostauth;
1623 int err;
1624
1625 if (!zd->ap)
1626 return -EOPNOTSUPP;
1627
1628 err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1629 if (err)
1630 return err;
1631 rrq->value = hostauth;
1632 rrq->fixed = 1;
1633
1634 return 0;
1635 }
1636
zd1201_auth_sta(struct net_device * dev,struct iw_request_info * info,struct sockaddr * sta,char * extra)1637 static int zd1201_auth_sta(struct net_device *dev,
1638 struct iw_request_info *info, struct sockaddr *sta, char *extra)
1639 {
1640 struct zd1201 *zd = netdev_priv(dev);
1641 unsigned char buffer[10];
1642
1643 if (!zd->ap)
1644 return -EOPNOTSUPP;
1645
1646 memcpy(buffer, sta->sa_data, ETH_ALEN);
1647 *(short*)(buffer+6) = 0; /* 0==success, 1==failure */
1648 *(short*)(buffer+8) = 0;
1649
1650 return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1651 }
1652
zd1201_set_maxassoc(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1653 static int zd1201_set_maxassoc(struct net_device *dev,
1654 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1655 {
1656 struct zd1201 *zd = netdev_priv(dev);
1657 int err;
1658
1659 if (!zd->ap)
1660 return -EOPNOTSUPP;
1661
1662 err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1663 if (err)
1664 return err;
1665 return 0;
1666 }
1667
zd1201_get_maxassoc(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1668 static int zd1201_get_maxassoc(struct net_device *dev,
1669 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1670 {
1671 struct zd1201 *zd = netdev_priv(dev);
1672 short maxassoc;
1673 int err;
1674
1675 if (!zd->ap)
1676 return -EOPNOTSUPP;
1677
1678 err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1679 if (err)
1680 return err;
1681 rrq->value = maxassoc;
1682 rrq->fixed = 1;
1683
1684 return 0;
1685 }
1686
1687 static const iw_handler zd1201_private_handler[] = {
1688 (iw_handler) zd1201_set_hostauth, /* ZD1201SIWHOSTAUTH */
1689 (iw_handler) zd1201_get_hostauth, /* ZD1201GIWHOSTAUTH */
1690 (iw_handler) zd1201_auth_sta, /* ZD1201SIWAUTHSTA */
1691 (iw_handler) NULL, /* nothing to get */
1692 (iw_handler) zd1201_set_maxassoc, /* ZD1201SIMAXASSOC */
1693 (iw_handler) zd1201_get_maxassoc, /* ZD1201GIMAXASSOC */
1694 };
1695
1696 static const struct iw_priv_args zd1201_private_args[] = {
1697 { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1698 IW_PRIV_TYPE_NONE, "sethostauth" },
1699 { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1700 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1701 { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1702 IW_PRIV_TYPE_NONE, "authstation" },
1703 { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1704 IW_PRIV_TYPE_NONE, "setmaxassoc" },
1705 { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1706 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1707 };
1708
1709 static const struct iw_handler_def zd1201_iw_handlers = {
1710 .num_standard = ARRAY_SIZE(zd1201_iw_handler),
1711 .num_private = ARRAY_SIZE(zd1201_private_handler),
1712 .num_private_args = ARRAY_SIZE(zd1201_private_args),
1713 .standard = (iw_handler *)zd1201_iw_handler,
1714 .private = (iw_handler *)zd1201_private_handler,
1715 .private_args = (struct iw_priv_args *) zd1201_private_args,
1716 .get_wireless_stats = zd1201_get_wireless_stats,
1717 };
1718
1719 static const struct net_device_ops zd1201_netdev_ops = {
1720 .ndo_open = zd1201_net_open,
1721 .ndo_stop = zd1201_net_stop,
1722 .ndo_start_xmit = zd1201_hard_start_xmit,
1723 .ndo_tx_timeout = zd1201_tx_timeout,
1724 .ndo_set_rx_mode = zd1201_set_multicast,
1725 .ndo_set_mac_address = zd1201_set_mac_address,
1726 .ndo_validate_addr = eth_validate_addr,
1727 };
1728
zd1201_probe(struct usb_interface * interface,const struct usb_device_id * id)1729 static int zd1201_probe(struct usb_interface *interface,
1730 const struct usb_device_id *id)
1731 {
1732 struct zd1201 *zd;
1733 struct net_device *dev;
1734 struct usb_device *usb;
1735 int err;
1736 short porttype;
1737 char buf[IW_ESSID_MAX_SIZE+2];
1738
1739 usb = interface_to_usbdev(interface);
1740
1741 dev = alloc_etherdev(sizeof(*zd));
1742 if (!dev)
1743 return -ENOMEM;
1744 zd = netdev_priv(dev);
1745 zd->dev = dev;
1746
1747 zd->ap = ap;
1748 zd->usb = usb;
1749 zd->removed = 0;
1750 init_waitqueue_head(&zd->rxdataq);
1751 INIT_HLIST_HEAD(&zd->fraglist);
1752
1753 err = zd1201_fw_upload(usb, zd->ap);
1754 if (err) {
1755 dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
1756 goto err_zd;
1757 }
1758
1759 zd->endp_in = 1;
1760 zd->endp_out = 1;
1761 zd->endp_out2 = 2;
1762 zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1763 zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1764 if (!zd->rx_urb || !zd->tx_urb) {
1765 err = -ENOMEM;
1766 goto err_zd;
1767 }
1768
1769 mdelay(100);
1770 err = zd1201_drvr_start(zd);
1771 if (err)
1772 goto err_zd;
1773
1774 err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
1775 if (err)
1776 goto err_start;
1777
1778 err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
1779 ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
1780 if (err)
1781 goto err_start;
1782
1783 dev->netdev_ops = &zd1201_netdev_ops;
1784 dev->wireless_handlers = &zd1201_iw_handlers;
1785 dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
1786 strcpy(dev->name, "wlan%d");
1787
1788 err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR,
1789 dev->dev_addr, dev->addr_len);
1790 if (err)
1791 goto err_start;
1792
1793 /* Set wildcard essid to match zd->essid */
1794 *(__le16 *)buf = cpu_to_le16(0);
1795 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
1796 IW_ESSID_MAX_SIZE+2, 1);
1797 if (err)
1798 goto err_start;
1799
1800 if (zd->ap)
1801 porttype = ZD1201_PORTTYPE_AP;
1802 else
1803 porttype = ZD1201_PORTTYPE_BSS;
1804 err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1805 if (err)
1806 goto err_start;
1807
1808 SET_NETDEV_DEV(dev, &usb->dev);
1809
1810 err = register_netdev(dev);
1811 if (err)
1812 goto err_start;
1813 dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
1814 dev->name);
1815
1816 usb_set_intfdata(interface, zd);
1817 zd1201_enable(zd); /* zd1201 likes to startup enabled, */
1818 zd1201_disable(zd); /* interfering with all the wifis in range */
1819 return 0;
1820
1821 err_start:
1822 /* Leave the device in reset state */
1823 zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
1824 err_zd:
1825 usb_free_urb(zd->tx_urb);
1826 usb_free_urb(zd->rx_urb);
1827 free_netdev(dev);
1828 return err;
1829 }
1830
zd1201_disconnect(struct usb_interface * interface)1831 static void zd1201_disconnect(struct usb_interface *interface)
1832 {
1833 struct zd1201 *zd = usb_get_intfdata(interface);
1834 struct hlist_node *node2;
1835 struct zd1201_frag *frag;
1836
1837 if (!zd)
1838 return;
1839 usb_set_intfdata(interface, NULL);
1840
1841 hlist_for_each_entry_safe(frag, node2, &zd->fraglist, fnode) {
1842 hlist_del_init(&frag->fnode);
1843 kfree_skb(frag->skb);
1844 kfree(frag);
1845 }
1846
1847 if (zd->tx_urb) {
1848 usb_kill_urb(zd->tx_urb);
1849 usb_free_urb(zd->tx_urb);
1850 }
1851 if (zd->rx_urb) {
1852 usb_kill_urb(zd->rx_urb);
1853 usb_free_urb(zd->rx_urb);
1854 }
1855
1856 if (zd->dev) {
1857 unregister_netdev(zd->dev);
1858 free_netdev(zd->dev);
1859 }
1860 }
1861
1862 #ifdef CONFIG_PM
1863
zd1201_suspend(struct usb_interface * interface,pm_message_t message)1864 static int zd1201_suspend(struct usb_interface *interface,
1865 pm_message_t message)
1866 {
1867 struct zd1201 *zd = usb_get_intfdata(interface);
1868
1869 netif_device_detach(zd->dev);
1870
1871 zd->was_enabled = zd->mac_enabled;
1872
1873 if (zd->was_enabled)
1874 return zd1201_disable(zd);
1875 else
1876 return 0;
1877 }
1878
zd1201_resume(struct usb_interface * interface)1879 static int zd1201_resume(struct usb_interface *interface)
1880 {
1881 struct zd1201 *zd = usb_get_intfdata(interface);
1882
1883 if (!zd || !zd->dev)
1884 return -ENODEV;
1885
1886 netif_device_attach(zd->dev);
1887
1888 if (zd->was_enabled)
1889 return zd1201_enable(zd);
1890 else
1891 return 0;
1892 }
1893
1894 #else
1895
1896 #define zd1201_suspend NULL
1897 #define zd1201_resume NULL
1898
1899 #endif
1900
1901 static struct usb_driver zd1201_usb = {
1902 .name = "zd1201",
1903 .probe = zd1201_probe,
1904 .disconnect = zd1201_disconnect,
1905 .id_table = zd1201_table,
1906 .suspend = zd1201_suspend,
1907 .resume = zd1201_resume,
1908 .disable_hub_initiated_lpm = 1,
1909 };
1910
1911 module_usb_driver(zd1201_usb);
1912
