packages: sort network related packages into package/network/
[openwrt.git] / package / network / utils / iwinfo / src / iwinfo_wl.c
1 /*
2  * iwinfo - Wireless Information Library - Broadcom wl.o Backend
3  *
4  *   Copyright (C) 2009 Jo-Philipp Wich <xm@subsignal.org>
5  *
6  * The iwinfo library is free software: you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License version 2
8  * as published by the Free Software Foundation.
9  *
10  * The iwinfo library is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13  * See the GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License along
16  * with the iwinfo library. If not, see http://www.gnu.org/licenses/.
17  *
18  * This code is based on the wlc.c utility published by OpenWrt.org .
19  */
20
21 #include "iwinfo/wl.h"
22 #include "iwinfo/wext.h"
23
24 static int wl_ioctl(const char *name, int cmd, void *buf, int len)
25 {
26         struct ifreq ifr;
27         wl_ioctl_t ioc;
28
29         /* do it */
30         ioc.cmd = cmd;
31         ioc.buf = buf;
32         ioc.len = len;
33
34         strncpy(ifr.ifr_name, name, IFNAMSIZ);
35         ifr.ifr_data = (caddr_t) &ioc;
36
37         return iwinfo_ioctl(SIOCDEVPRIVATE, &ifr);
38 }
39
40 static int wl_iovar(const char *name, const char *cmd, const char *arg,
41                                         int arglen, void *buf, int buflen)
42 {
43         int cmdlen = strlen(cmd) + 1;
44
45         memcpy(buf, cmd, cmdlen);
46
47         if (arg && arglen > 0)
48                 memcpy(buf + cmdlen, arg, arglen);
49
50         return wl_ioctl(name, WLC_GET_VAR, buf, buflen);
51 }
52
53 static struct wl_maclist * wl_read_assoclist(const char *ifname)
54 {
55         struct wl_maclist *macs;
56         int maclen = 4 + WL_MAX_STA_COUNT * 6;
57
58         if ((macs = (struct wl_maclist *) malloc(maclen)) != NULL)
59         {
60                 memset(macs, 0, maclen);
61                 macs->count = WL_MAX_STA_COUNT;
62
63                 if (!wl_ioctl(ifname, WLC_GET_ASSOCLIST, macs, maclen))
64                         return macs;
65
66                 free(macs);
67         }
68
69         return NULL;
70 }
71
72
73 int wl_probe(const char *ifname)
74 {
75         int magic;
76         return (!wl_ioctl(ifname, WLC_GET_MAGIC, &magic, sizeof(magic)) &&
77                         (magic == WLC_IOCTL_MAGIC));
78 }
79
80 void wl_close(void)
81 {
82         /* Nop */
83 }
84
85 int wl_get_mode(const char *ifname, int *buf)
86 {
87         int ret = -1;
88         int ap, infra, passive;
89
90         if ((ret = wl_ioctl(ifname, WLC_GET_AP, &ap, sizeof(ap))))
91                 return ret;
92
93         if ((ret = wl_ioctl(ifname, WLC_GET_INFRA, &infra, sizeof(infra))))
94                 return ret;
95
96         if ((ret = wl_ioctl(ifname, WLC_GET_PASSIVE, &passive, sizeof(passive))))
97                 return ret;
98
99         if (passive)
100                 *buf = IWINFO_OPMODE_MONITOR;
101         else if (!infra)
102                 *buf = IWINFO_OPMODE_ADHOC;
103         else if (ap)
104                 *buf = IWINFO_OPMODE_MASTER;
105         else
106                 *buf = IWINFO_OPMODE_CLIENT;
107
108         return 0;
109 }
110
111 int wl_get_ssid(const char *ifname, char *buf)
112 {
113         int ret = -1;
114         wlc_ssid_t ssid;
115
116         if (!(ret = wl_ioctl(ifname, WLC_GET_SSID, &ssid, sizeof(ssid))))
117                 memcpy(buf, ssid.ssid, ssid.ssid_len);
118
119         return ret;
120 }
121
122 int wl_get_bssid(const char *ifname, char *buf)
123 {
124         int ret = -1;
125         char bssid[6];
126
127         if (!(ret = wl_ioctl(ifname, WLC_GET_BSSID, bssid, 6)))
128                 sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X",
129                         (uint8_t)bssid[0], (uint8_t)bssid[1], (uint8_t)bssid[2],
130                         (uint8_t)bssid[3], (uint8_t)bssid[4], (uint8_t)bssid[5]
131                 );
132
133         return ret;
134 }
135
136 int wl_get_channel(const char *ifname, int *buf)
137 {
138         return wl_ioctl(ifname, WLC_GET_CHANNEL, buf, sizeof(buf));
139 }
140
141 int wl_get_frequency(const char *ifname, int *buf)
142 {
143         return wext_get_frequency(ifname, buf);
144 }
145
146 int wl_get_txpower(const char *ifname, int *buf)
147 {
148         /* WLC_GET_VAR "qtxpower" */
149         return wext_get_txpower(ifname, buf);
150 }
151
152 int wl_get_bitrate(const char *ifname, int *buf)
153 {
154         int ret = -1;
155         int rate = 0;
156
157         if( !(ret = wl_ioctl(ifname, WLC_GET_RATE, &rate, sizeof(rate))) && (rate > 0))
158                 *buf = ((rate / 2) * 1000) + ((rate & 1) ? 500 : 0);
159
160         return ret;
161 }
162
163 int wl_get_signal(const char *ifname, int *buf)
164 {
165         unsigned int ap, rssi, i, rssi_count;
166         int ioctl_req_version = 0x2000;
167         char tmp[WLC_IOCTL_MAXLEN];
168         struct wl_maclist *macs = NULL;
169         wl_sta_rssi_t starssi;
170
171         memset(tmp, 0, WLC_IOCTL_MAXLEN);
172         memcpy(tmp, &ioctl_req_version, sizeof(ioctl_req_version));
173
174         wl_ioctl(ifname, WLC_GET_BSS_INFO, tmp, WLC_IOCTL_MAXLEN);
175
176         if (!wl_ioctl(ifname, WLC_GET_AP, &ap, sizeof(ap)) && !ap)
177         {
178                 *buf = tmp[WL_BSS_RSSI_OFFSET];
179         }
180         else
181         {
182                 rssi = rssi_count = 0;
183
184                 /* Calculate average rssi from conntected stations */
185                 if ((macs = wl_read_assoclist(ifname)) != NULL)
186                 {
187                         for (i = 0; i < macs->count; i++)
188                         {
189                                 memcpy(starssi.mac, &macs->ea[i], 6);
190
191                                 if (!wl_ioctl(ifname, WLC_GET_RSSI, &starssi, 12))
192                                 {
193                                         rssi -= starssi.rssi;
194                                         rssi_count++;
195                                 }
196                         }
197
198                         free(macs);
199                 }
200
201                 *buf = (rssi == 0 || rssi_count == 0) ? 1 : -(rssi / rssi_count);
202         }
203
204         return 0;
205 }
206
207 int wl_get_noise(const char *ifname, int *buf)
208 {
209         unsigned int ap, noise;
210         int ioctl_req_version = 0x2000;
211         char tmp[WLC_IOCTL_MAXLEN];
212
213         memset(tmp, 0, WLC_IOCTL_MAXLEN);
214         memcpy(tmp, &ioctl_req_version, sizeof(ioctl_req_version));
215
216         wl_ioctl(ifname, WLC_GET_BSS_INFO, tmp, WLC_IOCTL_MAXLEN);
217
218         if ((wl_ioctl(ifname, WLC_GET_AP, &ap, sizeof(ap)) < 0) || ap)
219         {
220                 if (wl_ioctl(ifname, WLC_GET_PHY_NOISE, &noise, sizeof(noise)) < 0)
221                         noise = 0;
222         }
223         else
224         {
225                 noise = tmp[WL_BSS_NOISE_OFFSET];
226         }
227
228         *buf = noise;
229
230         return 0;
231 }
232
233 int wl_get_quality(const char *ifname, int *buf)
234 {
235         return wext_get_quality(ifname, buf);
236 }
237
238 int wl_get_quality_max(const char *ifname, int *buf)
239 {
240         return wext_get_quality_max(ifname, buf);
241 }
242
243 int wl_get_encryption(const char *ifname, char *buf)
244 {
245         uint32_t wsec, wauth, wpa;
246         struct iwinfo_crypto_entry *c = (struct iwinfo_crypto_entry *)buf;
247
248         if( wl_ioctl(ifname, WLC_GET_WPA_AUTH, &wpa,   sizeof(uint32_t)) ||
249             wl_ioctl(ifname, WLC_GET_WSEC,     &wsec,  sizeof(uint32_t)) ||
250                 wl_ioctl(ifname, WLC_GET_AUTH,     &wauth, sizeof(uint32_t)) )
251                         return -1;
252
253         switch(wsec)
254         {
255                 case 2:
256                         c->pair_ciphers |= IWINFO_CIPHER_TKIP;
257                         break;
258
259                 case 4:
260                         c->pair_ciphers |= IWINFO_CIPHER_CCMP;
261                         break;
262
263                 case 6:
264                         c->pair_ciphers |= IWINFO_CIPHER_TKIP;
265                         c->pair_ciphers |= IWINFO_CIPHER_CCMP;
266                         break;
267         }
268
269         switch(wpa)
270         {
271                 case 0:
272                         if (wsec && !wauth)
273                                 c->auth_algs |= IWINFO_AUTH_OPEN;
274
275                         else if (wsec && wauth)
276                                 c->auth_algs |= IWINFO_AUTH_SHARED;
277
278                         /* ToDo: evaluate WEP key lengths */
279                         c->pair_ciphers = IWINFO_CIPHER_WEP40 | IWINFO_CIPHER_WEP104;
280                         c->auth_suites |= IWINFO_KMGMT_NONE;
281                         break;
282
283                 case 2:
284                         c->wpa_version = 1;
285                         c->auth_suites |= IWINFO_KMGMT_8021x;
286                         break;
287
288                 case 4:
289                         c->wpa_version = 1;
290                         c->auth_suites |= IWINFO_KMGMT_PSK;
291                         break;
292
293                 case 32:
294                 case 64:
295                         c->wpa_version = 2;
296                         c->auth_suites |= IWINFO_KMGMT_8021x;
297                         break;
298
299                 case 66:
300                         c->wpa_version = 3;
301                         c->auth_suites |= IWINFO_KMGMT_8021x;
302                         break;
303
304                 case 128:
305                         c->wpa_version = 2;
306                         c->auth_suites |= IWINFO_KMGMT_PSK;
307                         break;
308
309                 case 132:
310                         c->wpa_version = 3;
311                         c->auth_suites |= IWINFO_KMGMT_PSK;
312                         break;
313
314                 default:
315                         break;
316         }
317
318         c->enabled = (c->wpa_version || c->auth_algs) ? 1 : 0;
319         c->group_ciphers = c->pair_ciphers;
320
321         return 0;
322 }
323
324 int wl_get_enctype(const char *ifname, char *buf)
325 {
326         uint32_t wsec, wpa;
327         char algo[11];
328
329         if( wl_ioctl(ifname, WLC_GET_WPA_AUTH, &wpa, sizeof(uint32_t)) ||
330             wl_ioctl(ifname, WLC_GET_WSEC, &wsec, sizeof(uint32_t)) )
331                         return -1;
332
333         switch(wsec)
334         {
335                 case 2:
336                         sprintf(algo, "TKIP");
337                         break;
338
339                 case 4:
340                         sprintf(algo, "CCMP");
341                         break;
342
343                 case 6:
344                         sprintf(algo, "TKIP, CCMP");
345                         break;
346         }
347
348         switch(wpa)
349         {
350                 case 0:
351                         sprintf(buf, "%s", wsec ? "WEP" : "None");
352                         break;
353
354                 case 2:
355                         sprintf(buf, "WPA 802.1X (%s)", algo);
356                         break;
357
358                 case 4:
359                         sprintf(buf, "WPA PSK (%s)", algo);
360                         break;
361
362                 case 32:
363                         sprintf(buf, "802.1X (%s)", algo);
364                         break;
365
366                 case 64:
367                         sprintf(buf, "WPA2 802.1X (%s)", algo);
368                         break;
369
370                 case 66:
371                         sprintf(buf, "mixed WPA/WPA2 802.1X (%s)", algo);
372                         break;
373
374                 case 128:
375                         sprintf(buf, "WPA2 PSK (%s)", algo);
376                         break;
377
378                 case 132:
379                         sprintf(buf, "mixed WPA/WPA2 PSK (%s)", algo);
380                         break;
381
382                 default:
383                         sprintf(buf, "Unknown");
384         }
385
386         return 0;
387 }
388
389 static void wl_get_assoclist_cb(const char *ifname,
390                                                             struct iwinfo_assoclist_entry *e)
391 {
392         wl_sta_info_t sta = { 0 };
393
394         if (!wl_iovar(ifname, "sta_info", e->mac, 6, &sta, sizeof(sta)) &&
395                 (sta.ver >= 2))
396         {
397                 e->inactive     = sta.idle * 1000;
398                 e->rx_packets   = sta.rx_ucast_pkts;
399                 e->tx_packets   = sta.tx_pkts;
400                 e->rx_rate.rate = sta.rx_rate;
401                 e->tx_rate.rate = sta.tx_rate;
402
403                 /* ToDo: 11n */
404                 e->rx_rate.mcs = -1;
405                 e->tx_rate.mcs = -1;
406         }
407 }
408
409 int wl_get_assoclist(const char *ifname, char *buf, int *len)
410 {
411         int i, j, noise;
412         int ap, infra, passive;
413         char line[128];
414         char macstr[18];
415         char devstr[IFNAMSIZ];
416         struct wl_maclist *macs;
417         struct wl_sta_rssi rssi;
418         struct iwinfo_assoclist_entry entry;
419         FILE *arp;
420
421         ap = infra = passive = 0;
422
423         wl_ioctl(ifname, WLC_GET_AP, &ap, sizeof(ap));
424         wl_ioctl(ifname, WLC_GET_INFRA, &infra, sizeof(infra));
425         wl_ioctl(ifname, WLC_GET_PASSIVE, &passive, sizeof(passive));
426
427         if (wl_get_noise(ifname, &noise))
428                 noise = 0;
429
430         if ((ap || infra || passive) && ((macs = wl_read_assoclist(ifname)) != NULL))
431         {
432                 for (i = 0, j = 0; i < macs->count; i++, j += sizeof(struct iwinfo_assoclist_entry))
433                 {
434                         memset(&entry, 0, sizeof(entry));
435                         memcpy(rssi.mac, &macs->ea[i], 6);
436
437                         if (!wl_ioctl(ifname, WLC_GET_RSSI, &rssi, sizeof(struct wl_sta_rssi)))
438                                 entry.signal = (rssi.rssi - 0x100);
439                         else
440                                 entry.signal = 0;
441
442                         entry.noise = noise;
443                         memcpy(entry.mac, &macs->ea[i], 6);
444                         wl_get_assoclist_cb(ifname, &entry);
445
446                         memcpy(&buf[j], &entry, sizeof(entry));
447                 }
448
449                 *len = j;
450                 free(macs);
451                 return 0;
452         }
453         else if ((arp = fopen("/proc/net/arp", "r")) != NULL)
454         {
455                 j = 0;
456
457                 while (fgets(line, sizeof(line), arp) != NULL)
458                 {
459                         if (sscanf(line, "%*s 0x%*d 0x%*d %17s %*s %s", macstr, devstr) && !strcmp(devstr, ifname))
460                         {
461                                 rssi.mac[0] = strtol(&macstr[0],  NULL, 16);
462                                 rssi.mac[1] = strtol(&macstr[3],  NULL, 16);
463                                 rssi.mac[2] = strtol(&macstr[6],  NULL, 16);
464                                 rssi.mac[3] = strtol(&macstr[9],  NULL, 16);
465                                 rssi.mac[4] = strtol(&macstr[12], NULL, 16);
466                                 rssi.mac[5] = strtol(&macstr[15], NULL, 16);
467
468                                 if (!wl_ioctl(ifname, WLC_GET_RSSI, &rssi, sizeof(struct wl_sta_rssi)))
469                                         entry.signal = (rssi.rssi - 0x100);
470                                 else
471                                         entry.signal = 0;
472
473                                 entry.noise = noise;
474                                 memcpy(entry.mac, rssi.mac, 6);
475                                 memcpy(&buf[j], &entry, sizeof(entry));
476
477                                 j += sizeof(entry);
478                         }
479                 }
480
481                 *len = j;
482                 (void) fclose(arp);
483                 return 0;
484         }
485
486         return -1;
487 }
488
489 int wl_get_txpwrlist(const char *ifname, char *buf, int *len)
490 {
491         struct iwinfo_txpwrlist_entry entry;
492         uint8_t dbm[11] = { 0, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 };
493         uint8_t mw[11]  = { 1, 3, 6, 10, 15, 25, 39, 63, 100, 158, 251 };
494         int i;
495
496         for (i = 0; i < 11; i++)
497         {
498                 entry.dbm = dbm[i];
499                 entry.mw  = mw[i];
500                 memcpy(&buf[i*sizeof(entry)], &entry, sizeof(entry));
501         }
502
503         *len = 11 * sizeof(entry);
504         return 0;
505 }
506
507 int wl_get_scanlist(const char *ifname, char *buf, int *len)
508 {
509         return wext_get_scanlist(ifname, buf, len);
510 }
511
512 int wl_get_freqlist(const char *ifname, char *buf, int *len)
513 {
514         return wext_get_freqlist(ifname, buf, len);
515 }
516
517 int wl_get_country(const char *ifname, char *buf)
518 {
519         char ccode[WLC_CNTRY_BUF_SZ];
520
521         if (!wl_ioctl(ifname, WLC_GET_COUNTRY, ccode, WLC_CNTRY_BUF_SZ))
522         {
523                 /* IL0 -> World */
524                 if (!strcmp(ccode, "IL0"))
525                         sprintf(buf, "00");
526
527                 /* YU -> RS */
528                 else if (!strcmp(ccode, "YU"))
529                         sprintf(buf, "RS");
530
531                 else
532                         memcpy(buf, ccode, 2);
533
534                 return 0;
535         }
536
537         return -1;
538 }
539
540 int wl_get_countrylist(const char *ifname, char *buf, int *len)
541 {
542         int i, count;
543         char cdata[WLC_IOCTL_MAXLEN];
544         struct iwinfo_country_entry *c = (struct iwinfo_country_entry *)buf;
545         wl_country_list_t *cl = (wl_country_list_t *)cdata;
546
547         cl->buflen = sizeof(cdata);
548
549         if (!wl_ioctl(ifname, WLC_GET_COUNTRY_LIST, cl, cl->buflen))
550         {
551                 for (i = 0, count = 0; i < cl->count; i++, c++)
552                 {
553                         sprintf(c->ccode, &cl->country_abbrev[i * WLC_CNTRY_BUF_SZ]);
554                         c->iso3166 = c->ccode[0] * 256 + c->ccode[1];
555
556                         /* IL0 -> World */
557                         if (!strcmp(c->ccode, "IL0"))
558                                 c->iso3166 = 0x3030;
559
560                         /* YU -> RS */
561                         else if (!strcmp(c->ccode, "YU"))
562                                 c->iso3166 = 0x5253;
563                 }
564
565                 *len = (i * sizeof(struct iwinfo_country_entry));
566                 return 0;
567         }
568
569         return -1;
570 }
571
572 int wl_get_hwmodelist(const char *ifname, int *buf)
573 {
574         return wext_get_hwmodelist(ifname, buf);
575 }
576
577 int wl_get_mbssid_support(const char *ifname, int *buf)
578 {
579         wlc_rev_info_t revinfo;
580
581         /* Multi bssid support only works on corerev >= 9 */
582         if (!wl_ioctl(ifname, WLC_GET_REVINFO, &revinfo, sizeof(revinfo)))
583         {
584                 if (revinfo.corerev >= 9)
585                 {
586                         *buf = 1;
587                         return 0;
588                 }
589         }
590
591         return -1;
592 }
593
594 int wl_get_hardware_id(const char *ifname, char *buf)
595 {
596         wlc_rev_info_t revinfo;
597         struct iwinfo_hardware_id *ids = (struct iwinfo_hardware_id *)buf;
598
599         if (wl_ioctl(ifname, WLC_GET_REVINFO, &revinfo, sizeof(revinfo)))
600                 return -1;
601
602         ids->vendor_id = revinfo.vendorid;
603         ids->device_id = revinfo.deviceid;
604         ids->subsystem_vendor_id = revinfo.boardvendor;
605         ids->subsystem_device_id = revinfo.boardid;
606
607         return 0;
608 }
609
610 int wl_get_hardware_name(const char *ifname, char *buf)
611 {
612         struct iwinfo_hardware_id ids;
613
614         if (wl_get_hardware_id(ifname, (char *)&ids))
615                 return -1;
616
617         sprintf(buf, "Broadcom BCM%04X", ids.device_id);
618
619         return 0;
620 }
621
622 int wl_get_txpower_offset(const char *ifname, int *buf)
623 {
624         FILE *p;
625         char off[8];
626
627         *buf = 0;
628
629         if ((p = popen("/usr/sbin/nvram get opo", "r")) != NULL)
630         {
631                 if (fread(off, 1, sizeof(off), p))
632                         *buf = strtoul(off, NULL, 16);
633
634                 pclose(p);
635         }
636
637         return 0;
638 }
639
640 int wl_get_frequency_offset(const char *ifname, int *buf)
641 {
642         /* Stub */
643         *buf = 0;
644         return -1;
645 }