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[openwrt/openwrt.git] / openwrt / package / openwrt / wlcompat.c
1 // insert header here
2 // mbm. gpl.
3
4 #include <linux/config.h>
5 #include <linux/module.h>
6 #include <linux/init.h>
7 #include <linux/if_arp.h>
8 #include <asm/uaccess.h>
9 #include <linux/wireless.h>
10
11 #include <net/iw_handler.h>
12 #include <wlioctl.h>
13
14 #define DEBUG
15
16 static struct net_device *dev;
17 char buf[WLC_IOCTL_MAXLEN];
18
19 /* The frequency of each channel in MHz */
20 const long channel_frequency[] = {
21 2412, 2417, 2422, 2427, 2432, 2437, 2442,
22 2447, 2452, 2457, 2462, 2467, 2472, 2484
23 };
24 #define NUM_CHANNELS ( sizeof(channel_frequency) / sizeof(channel_frequency[0]) )
25
26 static int wl_ioctl(struct net_device *dev, int cmd, void *buf, int len)
27 {
28 mm_segment_t old_fs = get_fs();
29 struct ifreq ifr;
30 int ret;
31 wl_ioctl_t ioc;
32 ioc.cmd = cmd;
33 ioc.buf = buf;
34 ioc.len = len;
35 strncpy(ifr.ifr_name, dev->name, IFNAMSIZ);
36 ifr.ifr_data = (caddr_t) &ioc;
37 set_fs(KERNEL_DS);
38 ret = dev->do_ioctl(dev,&ifr,SIOCDEVPRIVATE);
39 set_fs (old_fs);
40 return ret;
41 }
42
43 static int wlcompat_ioctl_getiwrange(struct net_device *dev,
44 char *extra)
45 {
46 int i, k;
47 struct iw_range *range;
48
49 range = (struct iw_range *) extra;
50
51 range->we_version_compiled = WIRELESS_EXT;
52 range->we_version_source = WIRELESS_EXT;
53
54 range->min_nwid = range->max_nwid = 0;
55
56 range->num_channels = NUM_CHANNELS;
57 k = 0;
58 for (i = 0; i < NUM_CHANNELS; i++) {
59 range->freq[k].i = i + 1;
60 range->freq[k].m = channel_frequency[i] * 100000;
61 range->freq[k].e = 1;
62 k++;
63 if (k >= IW_MAX_FREQUENCIES)
64 break;
65 }
66 range->num_frequency = k;
67 range->sensitivity = 3;
68
69 /* nbd: don't know what this means, but other drivers set it this way */
70 range->pmp_flags = IW_POWER_PERIOD;
71 range->pmt_flags = IW_POWER_TIMEOUT;
72 range->pm_capa = IW_POWER_PERIOD | IW_POWER_TIMEOUT | IW_POWER_UNICAST_R;
73
74 range->min_pmp = 0;
75 range->max_pmp = 65535000;
76 range->min_pmt = 0;
77 range->max_pmt = 65535 * 1000;
78
79 range->min_rts = 0;
80 if (wl_ioctl(dev, WLC_GET_RTS, &range->max_rts, sizeof(int)) < 0)
81 range->max_rts = 2347;
82
83 range->min_frag = 256;
84
85 if (wl_ioctl(dev, WLC_GET_FRAG, &range->max_frag, sizeof(int)) < 0)
86 range->max_frag = 2346;
87
88 range->txpower_capa = IW_TXPOW_MWATT;
89
90 return 0;
91 }
92
93
94 static int wlcompat_set_scan(struct net_device *dev,
95 struct iw_request_info *info,
96 union iwreq_data *wrqu,
97 char *extra)
98 {
99 int ap = 0, oldap = 0;
100 wl_scan_params_t params;
101
102 memset(&params, 0, sizeof(params));
103
104 /* use defaults (same parameters as wl scan) */
105 memset(&params.bssid, 0xff, sizeof(params.bssid));
106 params.bss_type = DOT11_BSSTYPE_ANY;
107 params.scan_type = -1;
108 params.nprobes = -1;
109 params.active_time = -1;
110 params.passive_time = -1;
111 params.home_time = -1;
112
113 /* can only scan in STA mode */
114 wl_ioctl(dev, WLC_GET_AP, &oldap, sizeof(oldap));
115 if (oldap > 0)
116 wl_ioctl(dev, WLC_SET_AP, &ap, sizeof(ap));
117
118 if (wl_ioctl(dev, WLC_SCAN, &params, 64) < 0)
119 return -EINVAL;
120
121 if (oldap > 0)
122 wl_ioctl(dev, WLC_SET_AP, &oldap, sizeof(oldap));
123
124 return 0;
125 }
126
127
128 static int wlcompat_get_scan(struct net_device *dev,
129 struct iw_request_info *info,
130 union iwreq_data *wrqu,
131 char *extra)
132 {
133 wl_scan_results_t *results = (wl_scan_results_t *) buf;
134 wl_bss_info_t *bss_info;
135 char *info_ptr;
136 char *current_ev = extra;
137 char *current_val;
138 char *end_buf = extra + IW_SCAN_MAX_DATA;
139 struct iw_event iwe;
140 int i;
141
142 if (wl_ioctl(dev, WLC_SCAN_RESULTS, buf, WLC_IOCTL_MAXLEN) < 0)
143 return -EAGAIN;
144
145 bss_info = &(results->bss_info[0]);
146 info_ptr = (char *) bss_info;
147 for (i = 0; i < results->count; i++) {
148
149 /* send the cell address (must be sent first) */
150 iwe.cmd = SIOCGIWAP;
151 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
152 memcpy(&iwe.u.ap_addr.sa_data, &bss_info->BSSID, sizeof(bss_info->BSSID));
153 current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_ADDR_LEN);
154
155 /* send the ESSID */
156 iwe.cmd = SIOCGIWESSID;
157 iwe.u.data.length = bss_info->SSID_len;
158 if (iwe.u.data.length > IW_ESSID_MAX_SIZE)
159 iwe.u.data.length = IW_ESSID_MAX_SIZE;
160 iwe.u.data.flags = 1;
161 current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, bss_info->SSID);
162
163 /* send frequency/channel info */
164 iwe.cmd = SIOCGIWFREQ;
165 iwe.u.freq.e = 0;
166 iwe.u.freq.m = bss_info->channel;
167 current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_FREQ_LEN);
168
169 /* add quality statistics */
170 iwe.cmd = IWEVQUAL;
171 iwe.u.qual.level = bss_info->RSSI;
172 iwe.u.qual.noise = bss_info->phy_noise;
173 iwe.u.qual.qual = 0;
174 current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_QUAL_LEN);
175
176 /* send rate information */
177 iwe.cmd = SIOCGIWRATE;
178 current_val = current_ev + IW_EV_LCP_LEN;
179 iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
180
181 for(i = 0 ; i < bss_info->rateset.count ; i++) {
182 iwe.u.bitrate.value = ((bss_info->rateset.rates[i] & 0x7f) * 500000);
183 current_val = iwe_stream_add_value(current_ev, current_val, end_buf, &iwe, IW_EV_PARAM_LEN);
184 }
185 if((current_val - current_ev) > IW_EV_LCP_LEN)
186 current_ev = current_val;
187
188 info_ptr += sizeof(wl_bss_info_t);
189 if (bss_info->ie_length % 4)
190 info_ptr += bss_info->ie_length + 4 - (bss_info->ie_length % 4);
191 else
192 info_ptr += bss_info->ie_length;
193 bss_info = (wl_bss_info_t *) info_ptr;
194 }
195
196 wrqu->data.length = (current_ev - extra);
197 wrqu->data.flags = 0;
198
199 return 0;
200 }
201
202 static int wlcompat_ioctl(struct net_device *dev,
203 struct iw_request_info *info,
204 union iwreq_data *wrqu,
205 char *extra)
206 {
207 switch (info->cmd) {
208 case SIOCGIWNAME:
209 strcpy(wrqu->name, "IEEE 802.11-DS");
210 break;
211 case SIOCGIWFREQ:
212 {
213 channel_info_t ci;
214
215 if (wl_ioctl(dev,WLC_GET_CHANNEL, &ci, sizeof(ci)) < 0)
216 return -EINVAL;
217
218 wrqu->freq.m = ci.target_channel;
219 wrqu->freq.e = 0;
220 break;
221 }
222 case SIOCSIWFREQ:
223 {
224 if (wrqu->freq.e == 1) {
225 int channel = 0;
226 int f = wrqu->freq.m / 100000;
227 while ((channel < NUM_CHANNELS + 1) && (f != channel_frequency[channel]))
228 channel++;
229
230 if (channel == NUM_CHANNELS) // channel not found
231 return -EINVAL;
232
233 wrqu->freq.e = 0;
234 wrqu->freq.m = channel + 1;
235 }
236 if ((wrqu->freq.e == 0) && (wrqu->freq.m < 1000)) {
237 if (wl_ioctl(dev, WLC_SET_CHANNEL, &wrqu->freq.m, sizeof(int)) < 0)
238 return -EINVAL;
239 } else {
240 return -EINVAL;
241 }
242 break;
243 }
244 case SIOCGIWAP:
245 {
246 wrqu->ap_addr.sa_family = ARPHRD_ETHER;
247 if (wl_ioctl(dev,WLC_GET_BSSID,wrqu->ap_addr.sa_data,6) < 0)
248 return -EINVAL;
249 break;
250 }
251 case SIOCGIWESSID:
252 {
253 wlc_ssid_t ssid;
254
255 if (wl_ioctl(dev,WLC_GET_SSID, &ssid, sizeof(wlc_ssid_t)) < 0)
256 return -EINVAL;
257
258 wrqu->essid.flags = wrqu->data.flags = 1;
259 wrqu->essid.length = wrqu->data.length = ssid.SSID_len + 1;
260 memcpy(extra,ssid.SSID,ssid.SSID_len + 1);
261 break;
262 }
263 case SIOCSIWESSID:
264 {
265 wlc_ssid_t ssid;
266 memset(&ssid, 0, sizeof(ssid));
267 ssid.SSID_len = strlen(extra);
268 if (ssid.SSID_len > WLC_ESSID_MAX_SIZE)
269 ssid.SSID_len = WLC_ESSID_MAX_SIZE;
270 memcpy(ssid.SSID, extra, ssid.SSID_len);
271 if (wl_ioctl(dev, WLC_SET_SSID, &ssid, sizeof(ssid)) < 0)
272 return -EINVAL;
273 break;
274 }
275 case SIOCGIWRTS:
276 {
277 if (wl_ioctl(dev,WLC_GET_RTS,&(wrqu->rts.value),sizeof(int)) < 0)
278 return -EINVAL;
279 break;
280 }
281 case SIOCSIWRTS:
282 {
283 if (wl_ioctl(dev,WLC_SET_RTS,&(wrqu->rts.value),sizeof(int)) < 0)
284 return -EINVAL;
285 break;
286 }
287 case SIOCGIWFRAG:
288 {
289 if (wl_ioctl(dev,WLC_GET_FRAG,&(wrqu->frag.value),sizeof(int)) < 0)
290 return -EINVAL;
291 break;
292 }
293 case SIOCSIWFRAG:
294 {
295 if (wl_ioctl(dev,WLC_SET_FRAG,&(wrqu->frag.value),sizeof(int)) < 0)
296 return -EINVAL;
297 break;
298 }
299 case SIOCGIWTXPOW:
300 {
301 wrqu->txpower.value = 0;
302 if (wl_ioctl(dev,WLC_GET_TXPWR, &(wrqu->txpower.value), sizeof(int)) < 0)
303 return -EINVAL;
304 wrqu->txpower.fixed = 0;
305 wrqu->txpower.disabled = 0;
306 wrqu->txpower.flags = IW_TXPOW_MWATT;
307 break;
308 }
309 case SIOCSIWTXPOW:
310 {
311 if (wrqu->txpower.flags != IW_TXPOW_MWATT)
312 return -EINVAL;
313
314 if (wl_ioctl(dev, WLC_SET_TXPWR, &wrqu->txpower.value, sizeof(int)) < 0)
315 return -EINVAL;
316 }
317 case SIOCGIWENCODE:
318 {
319 wrqu->data.flags = IW_ENCODE_DISABLED;
320 break;
321 }
322 case SIOCGIWRANGE:
323 {
324 return wlcompat_ioctl_getiwrange(dev, extra);
325 break;
326 }
327 case SIOCSIWMODE:
328 {
329 int ap = -1, infra = -1, passive = 0, wet = 0;
330
331 switch (wrqu->mode) {
332 case IW_MODE_MONITOR:
333 passive = 1;
334 break;
335 case IW_MODE_ADHOC:
336 infra = 0;
337 ap = 0;
338 break;
339 case IW_MODE_MASTER:
340 infra = 1;
341 ap = 1;
342 break;
343 case IW_MODE_INFRA:
344 infra = 1;
345 ap = 0;
346 break;
347 case IW_MODE_REPEAT:
348 infra = 1;
349 ap = 0;
350 wet = 1;
351 break;
352 default:
353 return -EINVAL;
354 }
355
356 if (wl_ioctl(dev, WLC_SET_PASSIVE, &passive, sizeof(passive)) < 0)
357 return -EINVAL;
358 if (wl_ioctl(dev, WLC_SET_MONITOR, &passive, sizeof(passive)) < 0)
359 return -EINVAL;
360 if (wl_ioctl(dev, WLC_SET_WET, &wet, sizeof(wet)) < 0)
361 return -EINVAL;
362 if (ap >= 0)
363 if (wl_ioctl(dev, WLC_SET_AP, &ap, sizeof(ap)) < 0)
364 return -EINVAL;
365 if (infra >= 0)
366 if (wl_ioctl(dev, WLC_SET_INFRA, &infra, sizeof(infra)) < 0)
367 return -EINVAL;
368
369 break;
370
371 }
372 case SIOCGIWMODE:
373 {
374 int ap, infra, wet, passive;
375
376 if (wl_ioctl(dev, WLC_GET_AP, &ap, sizeof(ap)) < 0)
377 return -EINVAL;
378 if (wl_ioctl(dev, WLC_GET_INFRA, &infra, sizeof(infra)) < 0)
379 return -EINVAL;
380 if (wl_ioctl(dev, WLC_GET_PASSIVE, &passive, sizeof(passive)) < 0)
381 return -EINVAL;
382 if (wl_ioctl(dev, WLC_GET_WET, &wet, sizeof(wet)) < 0)
383 return -EINVAL;
384
385 if (passive) {
386 wrqu->mode = IW_MODE_MONITOR;
387 } else if (!infra) {
388 wrqu->mode = IW_MODE_ADHOC;
389 } else {
390 if (ap) {
391 wrqu->mode = IW_MODE_MASTER;
392 } else {
393 if (wet) {
394 wrqu->mode = IW_MODE_REPEAT;
395 } else {
396 wrqu->mode = IW_MODE_INFRA;
397 }
398 }
399 }
400 break;
401 }
402 default:
403 {
404 return -EINVAL;
405 }
406 }
407
408 return 0;
409 }
410
411 static const iw_handler wlcompat_handler[] = {
412 NULL, /* SIOCSIWCOMMIT */
413 wlcompat_ioctl, /* SIOCGIWNAME */
414 NULL, /* SIOCSIWNWID */
415 NULL, /* SIOCGIWNWID */
416 wlcompat_ioctl, /* SIOCSIWFREQ */
417 wlcompat_ioctl, /* SIOCGIWFREQ */
418 wlcompat_ioctl, /* SIOCSIWMODE */
419 wlcompat_ioctl, /* SIOCGIWMODE */
420 NULL, /* SIOCSIWSENS */
421 NULL, /* SIOCGIWSENS */
422 NULL, /* SIOCSIWRANGE, unused */
423 wlcompat_ioctl, /* SIOCGIWRANGE */
424 NULL, /* SIOCSIWPRIV */
425 NULL, /* SIOCGIWPRIV */
426 NULL, /* SIOCSIWSTATS */
427 NULL, /* SIOCGIWSTATS */
428 iw_handler_set_spy, /* SIOCSIWSPY */
429 iw_handler_get_spy, /* SIOCGIWSPY */
430 iw_handler_set_thrspy, /* SIOCSIWTHRSPY */
431 iw_handler_get_thrspy, /* SIOCGIWTHRSPY */
432 NULL, /* SIOCSIWAP */
433 wlcompat_ioctl, /* SIOCGIWAP */
434 NULL, /* -- hole -- */
435 NULL, /* SIOCGIWAPLIST */
436 wlcompat_set_scan, /* SIOCSIWSCAN */
437 wlcompat_get_scan, /* SIOCGIWSCAN */
438 wlcompat_ioctl, /* SIOCSIWESSID */
439 wlcompat_ioctl, /* SIOCGIWESSID */
440 NULL, /* SIOCSIWNICKN */
441 NULL, /* SIOCGIWNICKN */
442 NULL, /* -- hole -- */
443 NULL, /* -- hole -- */
444 NULL, /* SIOCSIWRATE */
445 NULL, /* SIOCGIWRATE */
446 wlcompat_ioctl, /* SIOCSIWRTS */
447 wlcompat_ioctl, /* SIOCGIWRTS */
448 wlcompat_ioctl, /* SIOCSIWFRAG */
449 wlcompat_ioctl, /* SIOCGIWFRAG */
450 wlcompat_ioctl, /* SIOCSIWTXPOW */
451 wlcompat_ioctl, /* SIOCGIWTXPOW */
452 NULL, /* SIOCSIWRETRY */
453 NULL, /* SIOCGIWRETRY */
454 NULL, /* SIOCSIWENCODE */
455 wlcompat_ioctl, /* SIOCGIWENCODE */
456 };
457
458 static const struct iw_handler_def wlcompat_handler_def =
459 {
460 .standard = (iw_handler *) wlcompat_handler,
461 .num_standard = sizeof(wlcompat_handler)/sizeof(iw_handler),
462 .private = NULL,
463 .num_private = 0,
464 .private_args = NULL,
465 .num_private_args = 0,
466 };
467
468 #ifdef DEBUG
469 static int (*old_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd);
470 static int new_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) {
471 int ret = old_ioctl(dev,ifr,cmd);
472 printk("dev: %s ioctl: 0x%04x\n",dev->name,cmd);
473 if (cmd==SIOCDEVPRIVATE) {
474 int x;
475 wl_ioctl_t *ioc = (wl_ioctl_t *)ifr->ifr_data;
476 unsigned char *buf = ioc->buf;
477 printk(" cmd: %d buf: 0x%08x len: %d\n",ioc->cmd,&(ioc->buf),ioc->len);
478 printk(" ->");
479 for (x=0;x<ioc->len && x<128 ;x++) {
480 printk("%02X",buf[x]);
481 }
482 printk("\n");
483 }
484 return ret;
485 }
486 #endif
487
488 static int __init wlcompat_init()
489 {
490 dev = dev_get_by_name("eth1");
491 #ifdef DEBUG
492 old_ioctl = dev->do_ioctl;
493 dev->do_ioctl = new_ioctl;
494 #endif
495 dev->wireless_handlers = (struct iw_handler_def *)&wlcompat_handler_def;
496 return 0;
497 }
498
499 static void __exit wlcompat_exit()
500 {
501 dev->wireless_handlers = NULL;
502 #ifdef DEBUG
503 dev->do_ioctl = old_ioctl;
504 #endif
505 return;
506 }
507
508 EXPORT_NO_SYMBOLS;
509 MODULE_AUTHOR("openwrt.org");
510 MODULE_LICENSE("GPL");
511
512 module_init(wlcompat_init);
513 module_exit(wlcompat_exit);
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