1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Driver for ZyDAS zd1201 based wireless USB devices.
4 *
5 * Copyright (c) 2004, 2005 Jeroen Vreeken (pe1rxq@amsat.org)
6 *
7 * Parts of this driver have been derived from a wlan-ng version
8 * modified by ZyDAS. They also made documentation available, thanks!
9 * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
10 */
11
12 #include <linux/module.h>
13 #include <linux/usb.h>
14 #include <linux/slab.h>
15 #include <linux/netdevice.h>
16 #include <linux/etherdevice.h>
17 #include <linux/wireless.h>
18 #include <net/cfg80211.h>
19 #include <net/iw_handler.h>
20 #include <linux/string.h>
21 #include <linux/if_arp.h>
22 #include <linux/firmware.h>
23 #include "zd1201.h"
24
25 static const struct usb_device_id zd1201_table[] = {
26 {USB_DEVICE(0x0586, 0x3400)}, /* Peabird Wireless USB Adapter */
27 {USB_DEVICE(0x0ace, 0x1201)}, /* ZyDAS ZD1201 Wireless USB Adapter */
28 {USB_DEVICE(0x050d, 0x6051)}, /* Belkin F5D6051 usb adapter */
29 {USB_DEVICE(0x0db0, 0x6823)}, /* MSI UB11B usb adapter */
30 {USB_DEVICE(0x1044, 0x8004)}, /* Gigabyte GN-WLBZ101 */
31 {USB_DEVICE(0x1044, 0x8005)}, /* GIGABYTE GN-WLBZ201 usb adapter */
32 {}
33 };
34
35 static int ap; /* Are we an AP or a normal station? */
36
37 #define ZD1201_VERSION "0.15"
38
39 MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>");
40 MODULE_DESCRIPTION("Driver for ZyDAS ZD1201 based USB Wireless adapters");
41 MODULE_VERSION(ZD1201_VERSION);
42 MODULE_LICENSE("GPL");
43 module_param(ap, int, 0);
44 MODULE_PARM_DESC(ap, "If non-zero Access Point firmware will be loaded");
45 MODULE_DEVICE_TABLE(usb, zd1201_table);
46
47
zd1201_fw_upload(struct usb_device * dev,int apfw)48 static int zd1201_fw_upload(struct usb_device *dev, int apfw)
49 {
50 const struct firmware *fw_entry;
51 const char *data;
52 unsigned long len;
53 int err;
54 unsigned char ret;
55 char *buf;
56 char *fwfile;
57
58 if (apfw)
59 fwfile = "zd1201-ap.fw";
60 else
61 fwfile = "zd1201.fw";
62
63 err = request_firmware(&fw_entry, fwfile, &dev->dev);
64 if (err) {
65 dev_err(&dev->dev, "Failed to load %s firmware file!\n", fwfile);
66 dev_err(&dev->dev, "Make sure the hotplug firmware loader is installed.\n");
67 dev_err(&dev->dev, "Goto http://linux-lc100020.sourceforge.net for more info.\n");
68 return err;
69 }
70
71 data = fw_entry->data;
72 len = fw_entry->size;
73
74 buf = kmalloc(1024, GFP_ATOMIC);
75 if (!buf) {
76 err = -ENOMEM;
77 goto exit;
78 }
79
80 while (len > 0) {
81 int translen = (len > 1024) ? 1024 : len;
82 memcpy(buf, data, translen);
83
84 err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0,
85 USB_DIR_OUT | 0x40, 0, 0, buf, translen,
86 ZD1201_FW_TIMEOUT);
87 if (err < 0)
88 goto exit;
89
90 len -= translen;
91 data += translen;
92 }
93
94 err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0x2,
95 USB_DIR_OUT | 0x40, 0, 0, NULL, 0, ZD1201_FW_TIMEOUT);
96 if (err < 0)
97 goto exit;
98
99 err = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 0x4,
100 USB_DIR_IN | 0x40, 0, 0, buf, sizeof(ret), ZD1201_FW_TIMEOUT);
101 if (err < 0)
102 goto exit;
103
104 memcpy(&ret, buf, sizeof(ret));
105
106 if (ret & 0x80) {
107 err = -EIO;
108 goto exit;
109 }
110
111 err = 0;
112 exit:
113 kfree(buf);
114 release_firmware(fw_entry);
115 return err;
116 }
117
118 MODULE_FIRMWARE("zd1201-ap.fw");
119 MODULE_FIRMWARE("zd1201.fw");
120
zd1201_usbfree(struct urb * urb)121 static void zd1201_usbfree(struct urb *urb)
122 {
123 struct zd1201 *zd = urb->context;
124
125 switch(urb->status) {
126 case -EILSEQ:
127 case -ENODEV:
128 case -ETIME:
129 case -ENOENT:
130 case -EPIPE:
131 case -EOVERFLOW:
132 case -ESHUTDOWN:
133 dev_warn(&zd->usb->dev, "%s: urb failed: %d\n",
134 zd->dev->name, urb->status);
135 }
136
137 kfree(urb->transfer_buffer);
138 usb_free_urb(urb);
139 }
140
141 /* cmdreq message:
142 u32 type
143 u16 cmd
144 u16 parm0
145 u16 parm1
146 u16 parm2
147 u8 pad[4]
148
149 total: 4 + 2 + 2 + 2 + 2 + 4 = 16
150 */
zd1201_docmd(struct zd1201 * zd,int cmd,int parm0,int parm1,int parm2)151 static int zd1201_docmd(struct zd1201 *zd, int cmd, int parm0,
152 int parm1, int parm2)
153 {
154 unsigned char *command;
155 int ret;
156 struct urb *urb;
157
158 command = kmalloc(16, GFP_ATOMIC);
159 if (!command)
160 return -ENOMEM;
161
162 *((__le32*)command) = cpu_to_le32(ZD1201_USB_CMDREQ);
163 *((__le16*)&command[4]) = cpu_to_le16(cmd);
164 *((__le16*)&command[6]) = cpu_to_le16(parm0);
165 *((__le16*)&command[8]) = cpu_to_le16(parm1);
166 *((__le16*)&command[10])= cpu_to_le16(parm2);
167
168 urb = usb_alloc_urb(0, GFP_ATOMIC);
169 if (!urb) {
170 kfree(command);
171 return -ENOMEM;
172 }
173 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
174 command, 16, zd1201_usbfree, zd);
175 ret = usb_submit_urb(urb, GFP_ATOMIC);
176 if (ret) {
177 kfree(command);
178 usb_free_urb(urb);
179 }
180
181 return ret;
182 }
183
184 /* Callback after sending out a packet */
zd1201_usbtx(struct urb * urb)185 static void zd1201_usbtx(struct urb *urb)
186 {
187 struct zd1201 *zd = urb->context;
188 netif_wake_queue(zd->dev);
189 }
190
191 /* Incoming data */
zd1201_usbrx(struct urb * urb)192 static void zd1201_usbrx(struct urb *urb)
193 {
194 struct zd1201 *zd = urb->context;
195 int free = 0;
196 unsigned char *data = urb->transfer_buffer;
197 struct sk_buff *skb;
198 unsigned char type;
199
200 if (!zd)
201 return;
202
203 switch(urb->status) {
204 case -EILSEQ:
205 case -ENODEV:
206 case -ETIME:
207 case -ENOENT:
208 case -EPIPE:
209 case -EOVERFLOW:
210 case -ESHUTDOWN:
211 dev_warn(&zd->usb->dev, "%s: rx urb failed: %d\n",
212 zd->dev->name, urb->status);
213 free = 1;
214 goto exit;
215 }
216
217 if (urb->status != 0 || urb->actual_length == 0)
218 goto resubmit;
219
220 type = data[0];
221 if (type == ZD1201_PACKET_EVENTSTAT || type == ZD1201_PACKET_RESOURCE) {
222 memcpy(zd->rxdata, data, urb->actual_length);
223 zd->rxlen = urb->actual_length;
224 zd->rxdatas = 1;
225 wake_up(&zd->rxdataq);
226 }
227 /* Info frame */
228 if (type == ZD1201_PACKET_INQUIRE) {
229 int i = 0;
230 unsigned short infotype, copylen;
231 infotype = le16_to_cpu(*(__le16*)&data[6]);
232
233 if (infotype == ZD1201_INF_LINKSTATUS) {
234 short linkstatus;
235
236 linkstatus = le16_to_cpu(*(__le16*)&data[8]);
237 switch(linkstatus) {
238 case 1:
239 netif_carrier_on(zd->dev);
240 break;
241 case 2:
242 netif_carrier_off(zd->dev);
243 break;
244 case 3:
245 netif_carrier_off(zd->dev);
246 break;
247 case 4:
248 netif_carrier_on(zd->dev);
249 break;
250 default:
251 netif_carrier_off(zd->dev);
252 }
253 goto resubmit;
254 }
255 if (infotype == ZD1201_INF_ASSOCSTATUS) {
256 short status = le16_to_cpu(*(__le16*)(data+8));
257 int event;
258 union iwreq_data wrqu;
259
260 switch (status) {
261 case ZD1201_ASSOCSTATUS_STAASSOC:
262 case ZD1201_ASSOCSTATUS_REASSOC:
263 event = IWEVREGISTERED;
264 break;
265 case ZD1201_ASSOCSTATUS_DISASSOC:
266 case ZD1201_ASSOCSTATUS_ASSOCFAIL:
267 case ZD1201_ASSOCSTATUS_AUTHFAIL:
268 default:
269 event = IWEVEXPIRED;
270 }
271 memcpy(wrqu.addr.sa_data, data+10, ETH_ALEN);
272 wrqu.addr.sa_family = ARPHRD_ETHER;
273
274 /* Send event to user space */
275 wireless_send_event(zd->dev, event, &wrqu, NULL);
276
277 goto resubmit;
278 }
279 if (infotype == ZD1201_INF_AUTHREQ) {
280 union iwreq_data wrqu;
281
282 memcpy(wrqu.addr.sa_data, data+8, ETH_ALEN);
283 wrqu.addr.sa_family = ARPHRD_ETHER;
284 /* There isn't a event that trully fits this request.
285 We assume that userspace will be smart enough to
286 see a new station being expired and sends back a
287 authstation ioctl to authorize it. */
288 wireless_send_event(zd->dev, IWEVEXPIRED, &wrqu, NULL);
289 goto resubmit;
290 }
291 /* Other infotypes are handled outside this handler */
292 zd->rxlen = 0;
293 while (i < urb->actual_length) {
294 copylen = le16_to_cpu(*(__le16*)&data[i+2]);
295 /* Sanity check, sometimes we get junk */
296 if (copylen+zd->rxlen > sizeof(zd->rxdata))
297 break;
298 memcpy(zd->rxdata+zd->rxlen, data+i+4, copylen);
299 zd->rxlen += copylen;
300 i += 64;
301 }
302 if (i >= urb->actual_length) {
303 zd->rxdatas = 1;
304 wake_up(&zd->rxdataq);
305 }
306 goto resubmit;
307 }
308 /* Actual data */
309 if (data[urb->actual_length-1] == ZD1201_PACKET_RXDATA) {
310 int datalen = urb->actual_length-1;
311 unsigned short len, fc, seq;
312
313 len = ntohs(*(__be16 *)&data[datalen-2]);
314 if (len>datalen)
315 len=datalen;
316 fc = le16_to_cpu(*(__le16 *)&data[datalen-16]);
317 seq = le16_to_cpu(*(__le16 *)&data[datalen-24]);
318
319 if (zd->monitor) {
320 if (datalen < 24)
321 goto resubmit;
322 if (!(skb = dev_alloc_skb(datalen+24)))
323 goto resubmit;
324
325 skb_put_data(skb, &data[datalen - 16], 2);
326 skb_put_data(skb, &data[datalen - 2], 2);
327 skb_put_data(skb, &data[datalen - 14], 6);
328 skb_put_data(skb, &data[datalen - 22], 6);
329 skb_put_data(skb, &data[datalen - 8], 6);
330 skb_put_data(skb, &data[datalen - 24], 2);
331 skb_put_data(skb, data, len);
332 skb->protocol = eth_type_trans(skb, zd->dev);
333 zd->dev->stats.rx_packets++;
334 zd->dev->stats.rx_bytes += skb->len;
335 netif_rx(skb);
336 goto resubmit;
337 }
338
339 if ((seq & IEEE80211_SCTL_FRAG) ||
340 (fc & IEEE80211_FCTL_MOREFRAGS)) {
341 struct zd1201_frag *frag = NULL;
342 char *ptr;
343
344 if (datalen<14)
345 goto resubmit;
346 if ((seq & IEEE80211_SCTL_FRAG) == 0) {
347 frag = kmalloc(sizeof(*frag), GFP_ATOMIC);
348 if (!frag)
349 goto resubmit;
350 skb = dev_alloc_skb(IEEE80211_MAX_DATA_LEN +14+2);
351 if (!skb) {
352 kfree(frag);
353 goto resubmit;
354 }
355 frag->skb = skb;
356 frag->seq = seq & IEEE80211_SCTL_SEQ;
357 skb_reserve(skb, 2);
358 skb_put_data(skb, &data[datalen - 14], 12);
359 skb_put_data(skb, &data[6], 2);
360 skb_put_data(skb, data + 8, len);
361 hlist_add_head(&frag->fnode, &zd->fraglist);
362 goto resubmit;
363 }
364 hlist_for_each_entry(frag, &zd->fraglist, fnode)
365 if (frag->seq == (seq&IEEE80211_SCTL_SEQ))
366 break;
367 if (!frag)
368 goto resubmit;
369 skb = frag->skb;
370 ptr = skb_put(skb, len);
371 if (ptr)
372 memcpy(ptr, data+8, len);
373 if (fc & IEEE80211_FCTL_MOREFRAGS)
374 goto resubmit;
375 hlist_del_init(&frag->fnode);
376 kfree(frag);
377 } else {
378 if (datalen<14)
379 goto resubmit;
380 skb = dev_alloc_skb(len + 14 + 2);
381 if (!skb)
382 goto resubmit;
383 skb_reserve(skb, 2);
384 skb_put_data(skb, &data[datalen - 14], 12);
385 skb_put_data(skb, &data[6], 2);
386 skb_put_data(skb, data + 8, len);
387 }
388 skb->protocol = eth_type_trans(skb, zd->dev);
389 zd->dev->stats.rx_packets++;
390 zd->dev->stats.rx_bytes += skb->len;
391 netif_rx(skb);
392 }
393 resubmit:
394 memset(data, 0, ZD1201_RXSIZE);
395
396 urb->status = 0;
397 urb->dev = zd->usb;
398 if(usb_submit_urb(urb, GFP_ATOMIC))
399 free = 1;
400
401 exit:
402 if (free) {
403 zd->rxlen = 0;
404 zd->rxdatas = 1;
405 wake_up(&zd->rxdataq);
406 kfree(urb->transfer_buffer);
407 }
408 }
409
zd1201_getconfig(struct zd1201 * zd,int rid,void * riddata,unsigned int riddatalen)410 static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
411 unsigned int riddatalen)
412 {
413 int err;
414 int i = 0;
415 int code;
416 int rid_fid;
417 int length;
418 unsigned char *pdata;
419
420 zd->rxdatas = 0;
421 err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
422 if (err)
423 return err;
424
425 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
426 if (!zd->rxlen)
427 return -EIO;
428
429 code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
430 rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
431 length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
432 if (length > zd->rxlen)
433 length = zd->rxlen-6;
434
435 /* If access bit is not on, then error */
436 if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
437 return -EINVAL;
438
439 /* Not enough buffer for allocating data */
440 if (riddatalen != (length - 4)) {
441 dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
442 riddatalen, zd->rxlen, length, rid, rid_fid);
443 return -ENODATA;
444 }
445
446 zd->rxdatas = 0;
447 /* Issue SetRxRid commnd */
448 err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
449 if (err)
450 return err;
451
452 /* Receive RID record from resource packets */
453 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
454 if (!zd->rxlen)
455 return -EIO;
456
457 if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
458 dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
459 zd->rxdata[zd->rxlen-1]);
460 return -EINVAL;
461 }
462
463 /* Set the data pointer and received data length */
464 pdata = zd->rxdata;
465 length = zd->rxlen;
466
467 do {
468 int actual_length;
469
470 actual_length = (length > 64) ? 64 : length;
471
472 if (pdata[0] != 0x3) {
473 dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
474 pdata[0]);
475 return -EINVAL;
476 }
477
478 if (actual_length != 64) {
479 /* Trim the last packet type byte */
480 actual_length--;
481 }
482
483 /* Skip the 4 bytes header (RID length and RID) */
484 if (i == 0) {
485 pdata += 8;
486 actual_length -= 8;
487 } else {
488 pdata += 4;
489 actual_length -= 4;
490 }
491
492 memcpy(riddata, pdata, actual_length);
493 riddata += actual_length;
494 pdata += actual_length;
495 length -= 64;
496 i++;
497 } while (length > 0);
498
499 return 0;
500 }
501
502 /*
503 * resreq:
504 * byte type
505 * byte sequence
506 * u16 reserved
507 * byte data[12]
508 * total: 16
509 */
zd1201_setconfig(struct zd1201 * zd,int rid,const void * buf,int len,int wait)510 static int zd1201_setconfig(struct zd1201 *zd, int rid, const void *buf, int len, int wait)
511 {
512 int err;
513 unsigned char *request;
514 int reqlen;
515 char seq=0;
516 struct urb *urb;
517 gfp_t gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
518
519 len += 4; /* first 4 are for header */
520
521 zd->rxdatas = 0;
522 zd->rxlen = 0;
523 for (seq=0; len > 0; seq++) {
524 request = kzalloc(16, gfp_mask);
525 if (!request)
526 return -ENOMEM;
527 urb = usb_alloc_urb(0, gfp_mask);
528 if (!urb) {
529 kfree(request);
530 return -ENOMEM;
531 }
532 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 netdev_tx_t zd1201_hard_start_xmit(struct sk_buff *skb,
783 struct net_device *dev)
784 {
785 struct zd1201 *zd = netdev_priv(dev);
786 unsigned char *txbuf = zd->txdata;
787 int txbuflen, pad = 0, err;
788 struct urb *urb = zd->tx_urb;
789
790 if (!zd->mac_enabled || zd->monitor) {
791 dev->stats.tx_dropped++;
792 kfree_skb(skb);
793 return NETDEV_TX_OK;
794 }
795 netif_stop_queue(dev);
796
797 txbuflen = skb->len + 8 + 1;
798 if (txbuflen%64 == 0) {
799 pad = 1;
800 txbuflen++;
801 }
802 txbuf[0] = 0xAA;
803 txbuf[1] = 0xAA;
804 txbuf[2] = 0x03;
805 txbuf[3] = 0x00; /* rfc1042 */
806 txbuf[4] = 0x00;
807 txbuf[5] = 0x00;
808
809 skb_copy_from_linear_data_offset(skb, 12, txbuf + 6, skb->len - 12);
810 if (pad)
811 txbuf[skb->len-12+6]=0;
812 skb_copy_from_linear_data(skb, txbuf + skb->len - 12 + 6 + pad, 12);
813 *(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
814 txbuf[txbuflen-1] = 0;
815
816 usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
817 txbuf, txbuflen, zd1201_usbtx, zd);
818
819 err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
820 if (err) {
821 dev->stats.tx_errors++;
822 netif_start_queue(dev);
823 } else {
824 dev->stats.tx_packets++;
825 dev->stats.tx_bytes += skb->len;
826 }
827 kfree_skb(skb);
828
829 return NETDEV_TX_OK;
830 }
831
zd1201_tx_timeout(struct net_device * dev,unsigned int txqueue)832 static void zd1201_tx_timeout(struct net_device *dev, unsigned int txqueue)
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 dev->stats.tx_errors++;
842 /* Restart the timeout to quiet the watchdog: */
843 netif_trans_update(dev); /* prevent tx timeout */
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 eth_hw_addr_set(dev, addr->sa_data);
860
861 return zd1201_mac_reset(zd);
862 }
863
zd1201_get_wireless_stats(struct net_device * dev)864 static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
865 {
866 struct zd1201 *zd = netdev_priv(dev);
867
868 return &zd->iwstats;
869 }
870
zd1201_set_multicast(struct net_device * dev)871 static void zd1201_set_multicast(struct net_device *dev)
872 {
873 struct zd1201 *zd = netdev_priv(dev);
874 struct netdev_hw_addr *ha;
875 unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
876 int i;
877
878 if (netdev_mc_count(dev) > ZD1201_MAXMULTI)
879 return;
880
881 i = 0;
882 netdev_for_each_mc_addr(ha, dev)
883 memcpy(reqbuf + i++ * ETH_ALEN, ha->addr, ETH_ALEN);
884 zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
885 netdev_mc_count(dev) * ETH_ALEN, 0);
886 }
887
zd1201_config_commit(struct net_device * dev,struct iw_request_info * info,struct iw_point * data,char * essid)888 static int zd1201_config_commit(struct net_device *dev,
889 struct iw_request_info *info, struct iw_point *data, char *essid)
890 {
891 struct zd1201 *zd = netdev_priv(dev);
892
893 return zd1201_mac_reset(zd);
894 }
895
zd1201_get_name(struct net_device * dev,struct iw_request_info * info,char * name,char * extra)896 static int zd1201_get_name(struct net_device *dev,
897 struct iw_request_info *info, char *name, char *extra)
898 {
899 strcpy(name, "IEEE 802.11b");
900 return 0;
901 }
902
zd1201_set_freq(struct net_device * dev,struct iw_request_info * info,struct iw_freq * freq,char * extra)903 static int zd1201_set_freq(struct net_device *dev,
904 struct iw_request_info *info, struct iw_freq *freq, char *extra)
905 {
906 struct zd1201 *zd = netdev_priv(dev);
907 short channel = 0;
908 int err;
909
910 if (freq->e == 0)
911 channel = freq->m;
912 else
913 channel = ieee80211_frequency_to_channel(freq->m);
914
915 err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
916 if (err)
917 return err;
918
919 zd1201_mac_reset(zd);
920
921 return 0;
922 }
923
zd1201_get_freq(struct net_device * dev,struct iw_request_info * info,struct iw_freq * freq,char * extra)924 static int zd1201_get_freq(struct net_device *dev,
925 struct iw_request_info *info, struct iw_freq *freq, char *extra)
926 {
927 struct zd1201 *zd = netdev_priv(dev);
928 short channel;
929 int err;
930
931 err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
932 if (err)
933 return err;
934 freq->e = 0;
935 freq->m = channel;
936
937 return 0;
938 }
939
zd1201_set_mode(struct net_device * dev,struct iw_request_info * info,__u32 * mode,char * extra)940 static int zd1201_set_mode(struct net_device *dev,
941 struct iw_request_info *info, __u32 *mode, char *extra)
942 {
943 struct zd1201 *zd = netdev_priv(dev);
944 short porttype, monitor = 0;
945 unsigned char buffer[IW_ESSID_MAX_SIZE+2];
946 int err;
947
948 if (zd->ap) {
949 if (*mode != IW_MODE_MASTER)
950 return -EINVAL;
951 return 0;
952 }
953
954 err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
955 if (err)
956 return err;
957 zd->dev->type = ARPHRD_ETHER;
958 switch(*mode) {
959 case IW_MODE_MONITOR:
960 monitor = 1;
961 zd->dev->type = ARPHRD_IEEE80211;
962 /* Make sure we are no longer associated with by
963 setting an 'impossible' essid.
964 (otherwise we mess up firmware)
965 */
966 zd1201_join(zd, "\0-*#\0", 5);
967 /* Put port in pIBSS */
968 fallthrough;
969 case 8: /* No pseudo-IBSS in wireless extensions (yet) */
970 porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
971 break;
972 case IW_MODE_ADHOC:
973 porttype = ZD1201_PORTTYPE_IBSS;
974 break;
975 case IW_MODE_INFRA:
976 porttype = ZD1201_PORTTYPE_BSS;
977 break;
978 default:
979 return -EINVAL;
980 }
981
982 err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
983 if (err)
984 return err;
985 if (zd->monitor && !monitor) {
986 zd1201_disable(zd);
987 *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
988 memcpy(buffer+2, zd->essid, zd->essidlen);
989 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
990 buffer, IW_ESSID_MAX_SIZE+2, 1);
991 if (err)
992 return err;
993 }
994 zd->monitor = monitor;
995 /* If monitor mode is set we don't actually turn it on here since it
996 * is done during mac reset anyway (see zd1201_mac_enable).
997 */
998 zd1201_mac_reset(zd);
999
1000 return 0;
1001 }
1002
zd1201_get_mode(struct net_device * dev,struct iw_request_info * info,__u32 * mode,char * extra)1003 static int zd1201_get_mode(struct net_device *dev,
1004 struct iw_request_info *info, __u32 *mode, char *extra)
1005 {
1006 struct zd1201 *zd = netdev_priv(dev);
1007 short porttype;
1008 int err;
1009
1010 err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1011 if (err)
1012 return err;
1013 switch(porttype) {
1014 case ZD1201_PORTTYPE_IBSS:
1015 *mode = IW_MODE_ADHOC;
1016 break;
1017 case ZD1201_PORTTYPE_BSS:
1018 *mode = IW_MODE_INFRA;
1019 break;
1020 case ZD1201_PORTTYPE_WDS:
1021 *mode = IW_MODE_REPEAT;
1022 break;
1023 case ZD1201_PORTTYPE_PSEUDOIBSS:
1024 *mode = 8;/* No Pseudo-IBSS... */
1025 break;
1026 case ZD1201_PORTTYPE_AP:
1027 *mode = IW_MODE_MASTER;
1028 break;
1029 default:
1030 dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1031 porttype);
1032 *mode = IW_MODE_AUTO;
1033 }
1034 if (zd->monitor)
1035 *mode = IW_MODE_MONITOR;
1036
1037 return 0;
1038 }
1039
zd1201_get_range(struct net_device * dev,struct iw_request_info * info,struct iw_point * wrq,char * extra)1040 static int zd1201_get_range(struct net_device *dev,
1041 struct iw_request_info *info, struct iw_point *wrq, char *extra)
1042 {
1043 struct iw_range *range = (struct iw_range *)extra;
1044
1045 wrq->length = sizeof(struct iw_range);
1046 memset(range, 0, sizeof(struct iw_range));
1047 range->we_version_compiled = WIRELESS_EXT;
1048 range->we_version_source = WIRELESS_EXT;
1049
1050 range->max_qual.qual = 128;
1051 range->max_qual.level = 128;
1052 range->max_qual.noise = 128;
1053 range->max_qual.updated = 7;
1054
1055 range->encoding_size[0] = 5;
1056 range->encoding_size[1] = 13;
1057 range->num_encoding_sizes = 2;
1058 range->max_encoding_tokens = ZD1201_NUMKEYS;
1059
1060 range->num_bitrates = 4;
1061 range->bitrate[0] = 1000000;
1062 range->bitrate[1] = 2000000;
1063 range->bitrate[2] = 5500000;
1064 range->bitrate[3] = 11000000;
1065
1066 range->min_rts = 0;
1067 range->min_frag = ZD1201_FRAGMIN;
1068 range->max_rts = ZD1201_RTSMAX;
1069 range->min_frag = ZD1201_FRAGMAX;
1070
1071 return 0;
1072 }
1073
1074 /* Little bit of magic here: we only get the quality if we poll
1075 * for it, and we never get an actual request to trigger such
1076 * a poll. Therefore we 'assume' that the user will soon ask for
1077 * the stats after asking the bssid.
1078 */
zd1201_get_wap(struct net_device * dev,struct iw_request_info * info,struct sockaddr * ap_addr,char * extra)1079 static int zd1201_get_wap(struct net_device *dev,
1080 struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1081 {
1082 struct zd1201 *zd = netdev_priv(dev);
1083 unsigned char buffer[6];
1084
1085 if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1086 /* Unfortunately the quality and noise reported is useless.
1087 they seem to be accumulators that increase until you
1088 read them, unless we poll on a fixed interval we can't
1089 use them
1090 */
1091 /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1092 zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1093 /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1094 zd->iwstats.qual.updated = 2;
1095 }
1096
1097 return zd1201_getconfig(zd, ZD1201_RID_CURRENTBSSID, ap_addr->sa_data, 6);
1098 }
1099
zd1201_set_scan(struct net_device * dev,struct iw_request_info * info,struct iw_point * srq,char * extra)1100 static int zd1201_set_scan(struct net_device *dev,
1101 struct iw_request_info *info, struct iw_point *srq, char *extra)
1102 {
1103 /* We do everything in get_scan */
1104 return 0;
1105 }
1106
zd1201_get_scan(struct net_device * dev,struct iw_request_info * info,struct iw_point * srq,char * extra)1107 static int zd1201_get_scan(struct net_device *dev,
1108 struct iw_request_info *info, struct iw_point *srq, char *extra)
1109 {
1110 struct zd1201 *zd = netdev_priv(dev);
1111 int err, i, j, enabled_save;
1112 struct iw_event iwe;
1113 char *cev = extra;
1114 char *end_buf = extra + IW_SCAN_MAX_DATA;
1115
1116 /* No scanning in AP mode */
1117 if (zd->ap)
1118 return -EOPNOTSUPP;
1119
1120 /* Scan doesn't seem to work if disabled */
1121 enabled_save = zd->mac_enabled;
1122 zd1201_enable(zd);
1123
1124 zd->rxdatas = 0;
1125 err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE,
1126 ZD1201_INQ_SCANRESULTS, 0, 0);
1127 if (err)
1128 return err;
1129
1130 wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1131 if (!zd->rxlen)
1132 return -EIO;
1133
1134 if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1135 return -EIO;
1136
1137 for(i=8; i<zd->rxlen; i+=62) {
1138 iwe.cmd = SIOCGIWAP;
1139 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1140 memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1141 cev = iwe_stream_add_event(info, cev, end_buf,
1142 &iwe, IW_EV_ADDR_LEN);
1143
1144 iwe.cmd = SIOCGIWESSID;
1145 iwe.u.data.length = zd->rxdata[i+16];
1146 iwe.u.data.flags = 1;
1147 cev = iwe_stream_add_point(info, cev, end_buf,
1148 &iwe, zd->rxdata+i+18);
1149
1150 iwe.cmd = SIOCGIWMODE;
1151 if (zd->rxdata[i+14]&0x01)
1152 iwe.u.mode = IW_MODE_MASTER;
1153 else
1154 iwe.u.mode = IW_MODE_ADHOC;
1155 cev = iwe_stream_add_event(info, cev, end_buf,
1156 &iwe, IW_EV_UINT_LEN);
1157
1158 iwe.cmd = SIOCGIWFREQ;
1159 iwe.u.freq.m = zd->rxdata[i+0];
1160 iwe.u.freq.e = 0;
1161 cev = iwe_stream_add_event(info, cev, end_buf,
1162 &iwe, IW_EV_FREQ_LEN);
1163
1164 iwe.cmd = SIOCGIWRATE;
1165 iwe.u.bitrate.fixed = 0;
1166 iwe.u.bitrate.disabled = 0;
1167 for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
1168 iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
1169 cev = iwe_stream_add_event(info, cev, end_buf,
1170 &iwe, IW_EV_PARAM_LEN);
1171 }
1172
1173 iwe.cmd = SIOCGIWENCODE;
1174 iwe.u.data.length = 0;
1175 if (zd->rxdata[i+14]&0x10)
1176 iwe.u.data.flags = IW_ENCODE_ENABLED;
1177 else
1178 iwe.u.data.flags = IW_ENCODE_DISABLED;
1179 cev = iwe_stream_add_point(info, cev, end_buf, &iwe, NULL);
1180
1181 iwe.cmd = IWEVQUAL;
1182 iwe.u.qual.qual = zd->rxdata[i+4];
1183 iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
1184 iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
1185 iwe.u.qual.updated = 7;
1186 cev = iwe_stream_add_event(info, cev, end_buf,
1187 &iwe, IW_EV_QUAL_LEN);
1188 }
1189
1190 if (!enabled_save)
1191 zd1201_disable(zd);
1192
1193 srq->length = cev - extra;
1194 srq->flags = 0;
1195
1196 return 0;
1197 }
1198
zd1201_set_essid(struct net_device * dev,struct iw_request_info * info,struct iw_point * data,char * essid)1199 static int zd1201_set_essid(struct net_device *dev,
1200 struct iw_request_info *info, struct iw_point *data, char *essid)
1201 {
1202 struct zd1201 *zd = netdev_priv(dev);
1203
1204 if (data->length > IW_ESSID_MAX_SIZE)
1205 return -EINVAL;
1206 if (data->length < 1)
1207 data->length = 1;
1208 zd->essidlen = data->length;
1209 memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1210 memcpy(zd->essid, essid, data->length);
1211 return zd1201_join(zd, zd->essid, zd->essidlen);
1212 }
1213
zd1201_get_essid(struct net_device * dev,struct iw_request_info * info,struct iw_point * data,char * essid)1214 static int zd1201_get_essid(struct net_device *dev,
1215 struct iw_request_info *info, struct iw_point *data, char *essid)
1216 {
1217 struct zd1201 *zd = netdev_priv(dev);
1218
1219 memcpy(essid, zd->essid, zd->essidlen);
1220 data->flags = 1;
1221 data->length = zd->essidlen;
1222
1223 return 0;
1224 }
1225
zd1201_get_nick(struct net_device * dev,struct iw_request_info * info,struct iw_point * data,char * nick)1226 static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1227 struct iw_point *data, char *nick)
1228 {
1229 strcpy(nick, "zd1201");
1230 data->flags = 1;
1231 data->length = strlen(nick);
1232 return 0;
1233 }
1234
zd1201_set_rate(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1235 static int zd1201_set_rate(struct net_device *dev,
1236 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1237 {
1238 struct zd1201 *zd = netdev_priv(dev);
1239 short rate;
1240 int err;
1241
1242 switch (rrq->value) {
1243 case 1000000:
1244 rate = ZD1201_RATEB1;
1245 break;
1246 case 2000000:
1247 rate = ZD1201_RATEB2;
1248 break;
1249 case 5500000:
1250 rate = ZD1201_RATEB5;
1251 break;
1252 case 11000000:
1253 default:
1254 rate = ZD1201_RATEB11;
1255 break;
1256 }
1257 if (!rrq->fixed) { /* Also enable all lower bitrates */
1258 rate |= rate-1;
1259 }
1260
1261 err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1262 if (err)
1263 return err;
1264
1265 return zd1201_mac_reset(zd);
1266 }
1267
zd1201_get_rate(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1268 static int zd1201_get_rate(struct net_device *dev,
1269 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1270 {
1271 struct zd1201 *zd = netdev_priv(dev);
1272 short rate;
1273 int err;
1274
1275 err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1276 if (err)
1277 return err;
1278
1279 switch(rate) {
1280 case 1:
1281 rrq->value = 1000000;
1282 break;
1283 case 2:
1284 rrq->value = 2000000;
1285 break;
1286 case 5:
1287 rrq->value = 5500000;
1288 break;
1289 case 11:
1290 rrq->value = 11000000;
1291 break;
1292 default:
1293 rrq->value = 0;
1294 }
1295 rrq->fixed = 0;
1296 rrq->disabled = 0;
1297
1298 return 0;
1299 }
1300
zd1201_set_rts(struct net_device * dev,struct iw_request_info * info,struct iw_param * rts,char * extra)1301 static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1302 struct iw_param *rts, char *extra)
1303 {
1304 struct zd1201 *zd = netdev_priv(dev);
1305 int err;
1306 short val = rts->value;
1307
1308 if (rts->disabled || !rts->fixed)
1309 val = ZD1201_RTSMAX;
1310 if (val > ZD1201_RTSMAX)
1311 return -EINVAL;
1312 if (val < 0)
1313 return -EINVAL;
1314
1315 err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1316 if (err)
1317 return err;
1318 return zd1201_mac_reset(zd);
1319 }
1320
zd1201_get_rts(struct net_device * dev,struct iw_request_info * info,struct iw_param * rts,char * extra)1321 static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1322 struct iw_param *rts, char *extra)
1323 {
1324 struct zd1201 *zd = netdev_priv(dev);
1325 short rtst;
1326 int err;
1327
1328 err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1329 if (err)
1330 return err;
1331 rts->value = rtst;
1332 rts->disabled = (rts->value == ZD1201_RTSMAX);
1333 rts->fixed = 1;
1334
1335 return 0;
1336 }
1337
zd1201_set_frag(struct net_device * dev,struct iw_request_info * info,struct iw_param * frag,char * extra)1338 static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1339 struct iw_param *frag, char *extra)
1340 {
1341 struct zd1201 *zd = netdev_priv(dev);
1342 int err;
1343 short val = frag->value;
1344
1345 if (frag->disabled || !frag->fixed)
1346 val = ZD1201_FRAGMAX;
1347 if (val > ZD1201_FRAGMAX)
1348 return -EINVAL;
1349 if (val < ZD1201_FRAGMIN)
1350 return -EINVAL;
1351 if (val & 1)
1352 return -EINVAL;
1353 err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1354 if (err)
1355 return err;
1356 return zd1201_mac_reset(zd);
1357 }
1358
zd1201_get_frag(struct net_device * dev,struct iw_request_info * info,struct iw_param * frag,char * extra)1359 static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1360 struct iw_param *frag, char *extra)
1361 {
1362 struct zd1201 *zd = netdev_priv(dev);
1363 short fragt;
1364 int err;
1365
1366 err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1367 if (err)
1368 return err;
1369 frag->value = fragt;
1370 frag->disabled = (frag->value == ZD1201_FRAGMAX);
1371 frag->fixed = 1;
1372
1373 return 0;
1374 }
1375
zd1201_set_retry(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1376 static int zd1201_set_retry(struct net_device *dev,
1377 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1378 {
1379 return 0;
1380 }
1381
zd1201_get_retry(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1382 static int zd1201_get_retry(struct net_device *dev,
1383 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1384 {
1385 return 0;
1386 }
1387
zd1201_set_encode(struct net_device * dev,struct iw_request_info * info,struct iw_point * erq,char * key)1388 static int zd1201_set_encode(struct net_device *dev,
1389 struct iw_request_info *info, struct iw_point *erq, char *key)
1390 {
1391 struct zd1201 *zd = netdev_priv(dev);
1392 short i;
1393 int err, rid;
1394
1395 if (erq->length > ZD1201_MAXKEYLEN)
1396 return -EINVAL;
1397
1398 i = (erq->flags & IW_ENCODE_INDEX)-1;
1399 if (i == -1) {
1400 err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1401 if (err)
1402 return err;
1403 } else {
1404 err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1405 if (err)
1406 return err;
1407 }
1408
1409 if (i < 0 || i >= ZD1201_NUMKEYS)
1410 return -EINVAL;
1411
1412 rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1413 err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1414 if (err)
1415 return err;
1416 zd->encode_keylen[i] = erq->length;
1417 memcpy(zd->encode_keys[i], key, erq->length);
1418
1419 i=0;
1420 if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1421 i |= 0x01;
1422 zd->encode_enabled = 1;
1423 } else
1424 zd->encode_enabled = 0;
1425 if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1426 i |= 0x02;
1427 zd->encode_restricted = 1;
1428 } else
1429 zd->encode_restricted = 0;
1430 err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1431 if (err)
1432 return err;
1433
1434 if (zd->encode_enabled)
1435 i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1436 else
1437 i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1438 err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1439 if (err)
1440 return err;
1441
1442 return zd1201_mac_reset(zd);
1443 }
1444
zd1201_get_encode(struct net_device * dev,struct iw_request_info * info,struct iw_point * erq,char * key)1445 static int zd1201_get_encode(struct net_device *dev,
1446 struct iw_request_info *info, struct iw_point *erq, char *key)
1447 {
1448 struct zd1201 *zd = netdev_priv(dev);
1449 short i;
1450 int err;
1451
1452 if (zd->encode_enabled)
1453 erq->flags = IW_ENCODE_ENABLED;
1454 else
1455 erq->flags = IW_ENCODE_DISABLED;
1456 if (zd->encode_restricted)
1457 erq->flags |= IW_ENCODE_RESTRICTED;
1458 else
1459 erq->flags |= IW_ENCODE_OPEN;
1460
1461 i = (erq->flags & IW_ENCODE_INDEX) -1;
1462 if (i == -1) {
1463 err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1464 if (err)
1465 return err;
1466 }
1467 if (i<0 || i>= ZD1201_NUMKEYS)
1468 return -EINVAL;
1469
1470 erq->flags |= i+1;
1471
1472 erq->length = zd->encode_keylen[i];
1473 memcpy(key, zd->encode_keys[i], erq->length);
1474
1475 return 0;
1476 }
1477
zd1201_set_power(struct net_device * dev,struct iw_request_info * info,struct iw_param * vwrq,char * extra)1478 static int zd1201_set_power(struct net_device *dev,
1479 struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1480 {
1481 struct zd1201 *zd = netdev_priv(dev);
1482 short enabled, duration, level;
1483 int err;
1484
1485 enabled = vwrq->disabled ? 0 : 1;
1486 if (enabled) {
1487 if (vwrq->flags & IW_POWER_PERIOD) {
1488 duration = vwrq->value;
1489 err = zd1201_setconfig16(zd,
1490 ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1491 if (err)
1492 return err;
1493 goto out;
1494 }
1495 if (vwrq->flags & IW_POWER_TIMEOUT) {
1496 err = zd1201_getconfig16(zd,
1497 ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1498 if (err)
1499 return err;
1500 level = vwrq->value * 4 / duration;
1501 if (level > 4)
1502 level = 4;
1503 if (level < 0)
1504 level = 0;
1505 err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1506 level);
1507 if (err)
1508 return err;
1509 goto out;
1510 }
1511 return -EINVAL;
1512 }
1513 out:
1514 return zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1515 }
1516
zd1201_get_power(struct net_device * dev,struct iw_request_info * info,struct iw_param * vwrq,char * extra)1517 static int zd1201_get_power(struct net_device *dev,
1518 struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1519 {
1520 struct zd1201 *zd = netdev_priv(dev);
1521 short enabled, level, duration;
1522 int err;
1523
1524 err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1525 if (err)
1526 return err;
1527 err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1528 if (err)
1529 return err;
1530 err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1531 if (err)
1532 return err;
1533 vwrq->disabled = enabled ? 0 : 1;
1534 if (vwrq->flags & IW_POWER_TYPE) {
1535 if (vwrq->flags & IW_POWER_PERIOD) {
1536 vwrq->value = duration;
1537 vwrq->flags = IW_POWER_PERIOD;
1538 } else {
1539 vwrq->value = duration * level / 4;
1540 vwrq->flags = IW_POWER_TIMEOUT;
1541 }
1542 }
1543 if (vwrq->flags & IW_POWER_MODE) {
1544 if (enabled && level)
1545 vwrq->flags = IW_POWER_UNICAST_R;
1546 else
1547 vwrq->flags = IW_POWER_ALL_R;
1548 }
1549
1550 return 0;
1551 }
1552
1553
1554 static const iw_handler zd1201_iw_handler[] =
1555 {
1556 (iw_handler) zd1201_config_commit, /* SIOCSIWCOMMIT */
1557 (iw_handler) zd1201_get_name, /* SIOCGIWNAME */
1558 (iw_handler) NULL, /* SIOCSIWNWID */
1559 (iw_handler) NULL, /* SIOCGIWNWID */
1560 (iw_handler) zd1201_set_freq, /* SIOCSIWFREQ */
1561 (iw_handler) zd1201_get_freq, /* SIOCGIWFREQ */
1562 (iw_handler) zd1201_set_mode, /* SIOCSIWMODE */
1563 (iw_handler) zd1201_get_mode, /* SIOCGIWMODE */
1564 (iw_handler) NULL, /* SIOCSIWSENS */
1565 (iw_handler) NULL, /* SIOCGIWSENS */
1566 (iw_handler) NULL, /* SIOCSIWRANGE */
1567 (iw_handler) zd1201_get_range, /* SIOCGIWRANGE */
1568 (iw_handler) NULL, /* SIOCSIWPRIV */
1569 (iw_handler) NULL, /* SIOCGIWPRIV */
1570 (iw_handler) NULL, /* SIOCSIWSTATS */
1571 (iw_handler) NULL, /* SIOCGIWSTATS */
1572 (iw_handler) NULL, /* SIOCSIWSPY */
1573 (iw_handler) NULL, /* SIOCGIWSPY */
1574 (iw_handler) NULL, /* -- hole -- */
1575 (iw_handler) NULL, /* -- hole -- */
1576 (iw_handler) NULL/*zd1201_set_wap*/, /* SIOCSIWAP */
1577 (iw_handler) zd1201_get_wap, /* SIOCGIWAP */
1578 (iw_handler) NULL, /* -- hole -- */
1579 (iw_handler) NULL, /* SIOCGIWAPLIST */
1580 (iw_handler) zd1201_set_scan, /* SIOCSIWSCAN */
1581 (iw_handler) zd1201_get_scan, /* SIOCGIWSCAN */
1582 (iw_handler) zd1201_set_essid, /* SIOCSIWESSID */
1583 (iw_handler) zd1201_get_essid, /* SIOCGIWESSID */
1584 (iw_handler) NULL, /* SIOCSIWNICKN */
1585 (iw_handler) zd1201_get_nick, /* SIOCGIWNICKN */
1586 (iw_handler) NULL, /* -- hole -- */
1587 (iw_handler) NULL, /* -- hole -- */
1588 (iw_handler) zd1201_set_rate, /* SIOCSIWRATE */
1589 (iw_handler) zd1201_get_rate, /* SIOCGIWRATE */
1590 (iw_handler) zd1201_set_rts, /* SIOCSIWRTS */
1591 (iw_handler) zd1201_get_rts, /* SIOCGIWRTS */
1592 (iw_handler) zd1201_set_frag, /* SIOCSIWFRAG */
1593 (iw_handler) zd1201_get_frag, /* SIOCGIWFRAG */
1594 (iw_handler) NULL, /* SIOCSIWTXPOW */
1595 (iw_handler) NULL, /* SIOCGIWTXPOW */
1596 (iw_handler) zd1201_set_retry, /* SIOCSIWRETRY */
1597 (iw_handler) zd1201_get_retry, /* SIOCGIWRETRY */
1598 (iw_handler) zd1201_set_encode, /* SIOCSIWENCODE */
1599 (iw_handler) zd1201_get_encode, /* SIOCGIWENCODE */
1600 (iw_handler) zd1201_set_power, /* SIOCSIWPOWER */
1601 (iw_handler) zd1201_get_power, /* SIOCGIWPOWER */
1602 };
1603
zd1201_set_hostauth(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1604 static int zd1201_set_hostauth(struct net_device *dev,
1605 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1606 {
1607 struct zd1201 *zd = netdev_priv(dev);
1608
1609 if (!zd->ap)
1610 return -EOPNOTSUPP;
1611
1612 return zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1613 }
1614
zd1201_get_hostauth(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1615 static int zd1201_get_hostauth(struct net_device *dev,
1616 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1617 {
1618 struct zd1201 *zd = netdev_priv(dev);
1619 short hostauth;
1620 int err;
1621
1622 if (!zd->ap)
1623 return -EOPNOTSUPP;
1624
1625 err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1626 if (err)
1627 return err;
1628 rrq->value = hostauth;
1629 rrq->fixed = 1;
1630
1631 return 0;
1632 }
1633
zd1201_auth_sta(struct net_device * dev,struct iw_request_info * info,struct sockaddr * sta,char * extra)1634 static int zd1201_auth_sta(struct net_device *dev,
1635 struct iw_request_info *info, struct sockaddr *sta, char *extra)
1636 {
1637 struct zd1201 *zd = netdev_priv(dev);
1638 unsigned char buffer[10];
1639
1640 if (!zd->ap)
1641 return -EOPNOTSUPP;
1642
1643 memcpy(buffer, sta->sa_data, ETH_ALEN);
1644 *(short*)(buffer+6) = 0; /* 0==success, 1==failure */
1645 *(short*)(buffer+8) = 0;
1646
1647 return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1648 }
1649
zd1201_set_maxassoc(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1650 static int zd1201_set_maxassoc(struct net_device *dev,
1651 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1652 {
1653 struct zd1201 *zd = netdev_priv(dev);
1654
1655 if (!zd->ap)
1656 return -EOPNOTSUPP;
1657
1658 return zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1659 }
1660
zd1201_get_maxassoc(struct net_device * dev,struct iw_request_info * info,struct iw_param * rrq,char * extra)1661 static int zd1201_get_maxassoc(struct net_device *dev,
1662 struct iw_request_info *info, struct iw_param *rrq, char *extra)
1663 {
1664 struct zd1201 *zd = netdev_priv(dev);
1665 short maxassoc;
1666 int err;
1667
1668 if (!zd->ap)
1669 return -EOPNOTSUPP;
1670
1671 err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1672 if (err)
1673 return err;
1674 rrq->value = maxassoc;
1675 rrq->fixed = 1;
1676
1677 return 0;
1678 }
1679
1680 static const iw_handler zd1201_private_handler[] = {
1681 (iw_handler) zd1201_set_hostauth, /* ZD1201SIWHOSTAUTH */
1682 (iw_handler) zd1201_get_hostauth, /* ZD1201GIWHOSTAUTH */
1683 (iw_handler) zd1201_auth_sta, /* ZD1201SIWAUTHSTA */
1684 (iw_handler) NULL, /* nothing to get */
1685 (iw_handler) zd1201_set_maxassoc, /* ZD1201SIMAXASSOC */
1686 (iw_handler) zd1201_get_maxassoc, /* ZD1201GIMAXASSOC */
1687 };
1688
1689 static const struct iw_priv_args zd1201_private_args[] = {
1690 { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1691 IW_PRIV_TYPE_NONE, "sethostauth" },
1692 { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1693 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1694 { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1695 IW_PRIV_TYPE_NONE, "authstation" },
1696 { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1697 IW_PRIV_TYPE_NONE, "setmaxassoc" },
1698 { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1699 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1700 };
1701
1702 static const struct iw_handler_def zd1201_iw_handlers = {
1703 .num_standard = ARRAY_SIZE(zd1201_iw_handler),
1704 .num_private = ARRAY_SIZE(zd1201_private_handler),
1705 .num_private_args = ARRAY_SIZE(zd1201_private_args),
1706 .standard = (iw_handler *)zd1201_iw_handler,
1707 .private = (iw_handler *)zd1201_private_handler,
1708 .private_args = (struct iw_priv_args *) zd1201_private_args,
1709 .get_wireless_stats = zd1201_get_wireless_stats,
1710 };
1711
1712 static const struct net_device_ops zd1201_netdev_ops = {
1713 .ndo_open = zd1201_net_open,
1714 .ndo_stop = zd1201_net_stop,
1715 .ndo_start_xmit = zd1201_hard_start_xmit,
1716 .ndo_tx_timeout = zd1201_tx_timeout,
1717 .ndo_set_rx_mode = zd1201_set_multicast,
1718 .ndo_set_mac_address = zd1201_set_mac_address,
1719 .ndo_validate_addr = eth_validate_addr,
1720 };
1721
zd1201_probe(struct usb_interface * interface,const struct usb_device_id * id)1722 static int zd1201_probe(struct usb_interface *interface,
1723 const struct usb_device_id *id)
1724 {
1725 struct zd1201 *zd;
1726 struct net_device *dev;
1727 struct usb_device *usb;
1728 int err;
1729 short porttype;
1730 char buf[IW_ESSID_MAX_SIZE+2];
1731 u8 addr[ETH_ALEN];
1732
1733 usb = interface_to_usbdev(interface);
1734
1735 dev = alloc_etherdev(sizeof(*zd));
1736 if (!dev)
1737 return -ENOMEM;
1738 zd = netdev_priv(dev);
1739 zd->dev = dev;
1740
1741 zd->ap = ap;
1742 zd->usb = usb;
1743 zd->removed = 0;
1744 init_waitqueue_head(&zd->rxdataq);
1745 INIT_HLIST_HEAD(&zd->fraglist);
1746
1747 err = zd1201_fw_upload(usb, zd->ap);
1748 if (err) {
1749 dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
1750 goto err_zd;
1751 }
1752
1753 zd->endp_in = 1;
1754 zd->endp_out = 1;
1755 zd->endp_out2 = 2;
1756 zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1757 zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1758 if (!zd->rx_urb || !zd->tx_urb) {
1759 err = -ENOMEM;
1760 goto err_zd;
1761 }
1762
1763 mdelay(100);
1764 err = zd1201_drvr_start(zd);
1765 if (err)
1766 goto err_zd;
1767
1768 err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
1769 if (err)
1770 goto err_start;
1771
1772 err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
1773 ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
1774 if (err)
1775 goto err_start;
1776
1777 dev->netdev_ops = &zd1201_netdev_ops;
1778 dev->wireless_handlers = &zd1201_iw_handlers;
1779 dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
1780 strcpy(dev->name, "wlan%d");
1781
1782 err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR, addr, ETH_ALEN);
1783 if (err)
1784 goto err_start;
1785 eth_hw_addr_set(dev, addr);
1786
1787 /* Set wildcard essid to match zd->essid */
1788 *(__le16 *)buf = cpu_to_le16(0);
1789 err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
1790 IW_ESSID_MAX_SIZE+2, 1);
1791 if (err)
1792 goto err_start;
1793
1794 if (zd->ap)
1795 porttype = ZD1201_PORTTYPE_AP;
1796 else
1797 porttype = ZD1201_PORTTYPE_BSS;
1798 err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1799 if (err)
1800 goto err_start;
1801
1802 SET_NETDEV_DEV(dev, &usb->dev);
1803
1804 err = register_netdev(dev);
1805 if (err)
1806 goto err_start;
1807 dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
1808 dev->name);
1809
1810 usb_set_intfdata(interface, zd);
1811 zd1201_enable(zd); /* zd1201 likes to startup enabled, */
1812 zd1201_disable(zd); /* interfering with all the wifis in range */
1813 return 0;
1814
1815 err_start:
1816 /* Leave the device in reset state */
1817 zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
1818 err_zd:
1819 usb_free_urb(zd->tx_urb);
1820 usb_free_urb(zd->rx_urb);
1821 free_netdev(dev);
1822 return err;
1823 }
1824
zd1201_disconnect(struct usb_interface * interface)1825 static void zd1201_disconnect(struct usb_interface *interface)
1826 {
1827 struct zd1201 *zd = usb_get_intfdata(interface);
1828 struct hlist_node *node2;
1829 struct zd1201_frag *frag;
1830
1831 if (!zd)
1832 return;
1833 usb_set_intfdata(interface, NULL);
1834
1835 hlist_for_each_entry_safe(frag, node2, &zd->fraglist, fnode) {
1836 hlist_del_init(&frag->fnode);
1837 kfree_skb(frag->skb);
1838 kfree(frag);
1839 }
1840
1841 if (zd->tx_urb) {
1842 usb_kill_urb(zd->tx_urb);
1843 usb_free_urb(zd->tx_urb);
1844 }
1845 if (zd->rx_urb) {
1846 usb_kill_urb(zd->rx_urb);
1847 usb_free_urb(zd->rx_urb);
1848 }
1849
1850 if (zd->dev) {
1851 unregister_netdev(zd->dev);
1852 free_netdev(zd->dev);
1853 }
1854 }
1855
1856 #ifdef CONFIG_PM
1857
zd1201_suspend(struct usb_interface * interface,pm_message_t message)1858 static int zd1201_suspend(struct usb_interface *interface,
1859 pm_message_t message)
1860 {
1861 struct zd1201 *zd = usb_get_intfdata(interface);
1862
1863 netif_device_detach(zd->dev);
1864
1865 zd->was_enabled = zd->mac_enabled;
1866
1867 if (zd->was_enabled)
1868 return zd1201_disable(zd);
1869 else
1870 return 0;
1871 }
1872
zd1201_resume(struct usb_interface * interface)1873 static int zd1201_resume(struct usb_interface *interface)
1874 {
1875 struct zd1201 *zd = usb_get_intfdata(interface);
1876
1877 if (!zd || !zd->dev)
1878 return -ENODEV;
1879
1880 netif_device_attach(zd->dev);
1881
1882 if (zd->was_enabled)
1883 return zd1201_enable(zd);
1884 else
1885 return 0;
1886 }
1887
1888 #else
1889
1890 #define zd1201_suspend NULL
1891 #define zd1201_resume NULL
1892
1893 #endif
1894
1895 static struct usb_driver zd1201_usb = {
1896 .name = "zd1201",
1897 .probe = zd1201_probe,
1898 .disconnect = zd1201_disconnect,
1899 .id_table = zd1201_table,
1900 .suspend = zd1201_suspend,
1901 .resume = zd1201_resume,
1902 .disable_hub_initiated_lpm = 1,
1903 };
1904
1905 module_usb_driver(zd1201_usb);
1906
