iwinfo: add phyname attribute, this is useful to group networks by radio phy
[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_phyname(const char *ifname, char *buf)
325 {
326         char *p;
327
328         strcpy(buf, ifname);
329
330         if ((p = strchr(buf, '.')) != NULL)
331                 *p = 0;
332
333         return 0;
334 }
335
336 int wl_get_enctype(const char *ifname, char *buf)
337 {
338         uint32_t wsec, wpa;
339         char algo[11];
340
341         if( wl_ioctl(ifname, WLC_GET_WPA_AUTH, &wpa, sizeof(uint32_t)) ||
342             wl_ioctl(ifname, WLC_GET_WSEC, &wsec, sizeof(uint32_t)) )
343                         return -1;
344
345         switch(wsec)
346         {
347                 case 2:
348                         sprintf(algo, "TKIP");
349                         break;
350
351                 case 4:
352                         sprintf(algo, "CCMP");
353                         break;
354
355                 case 6:
356                         sprintf(algo, "TKIP, CCMP");
357                         break;
358         }
359
360         switch(wpa)
361         {
362                 case 0:
363                         sprintf(buf, "%s", wsec ? "WEP" : "None");
364                         break;
365
366                 case 2:
367                         sprintf(buf, "WPA 802.1X (%s)", algo);
368                         break;
369
370                 case 4:
371                         sprintf(buf, "WPA PSK (%s)", algo);
372                         break;
373
374                 case 32:
375                         sprintf(buf, "802.1X (%s)", algo);
376                         break;
377
378                 case 64:
379                         sprintf(buf, "WPA2 802.1X (%s)", algo);
380                         break;
381
382                 case 66:
383                         sprintf(buf, "mixed WPA/WPA2 802.1X (%s)", algo);
384                         break;
385
386                 case 128:
387                         sprintf(buf, "WPA2 PSK (%s)", algo);
388                         break;
389
390                 case 132:
391                         sprintf(buf, "mixed WPA/WPA2 PSK (%s)", algo);
392                         break;
393
394                 default:
395                         sprintf(buf, "Unknown");
396         }
397
398         return 0;
399 }
400
401 static void wl_get_assoclist_cb(const char *ifname,
402                                                             struct iwinfo_assoclist_entry *e)
403 {
404         wl_sta_info_t sta = { 0 };
405
406         if (!wl_iovar(ifname, "sta_info", e->mac, 6, &sta, sizeof(sta)) &&
407                 (sta.ver >= 2))
408         {
409                 e->inactive     = sta.idle * 1000;
410                 e->rx_packets   = sta.rx_ucast_pkts;
411                 e->tx_packets   = sta.tx_pkts;
412                 e->rx_rate.rate = sta.rx_rate;
413                 e->tx_rate.rate = sta.tx_rate;
414
415                 /* ToDo: 11n */
416                 e->rx_rate.mcs = -1;
417                 e->tx_rate.mcs = -1;
418         }
419 }
420
421 int wl_get_assoclist(const char *ifname, char *buf, int *len)
422 {
423         int i, j, noise;
424         int ap, infra, passive;
425         char line[128];
426         char macstr[18];
427         char devstr[IFNAMSIZ];
428         struct wl_maclist *macs;
429         struct wl_sta_rssi rssi;
430         struct iwinfo_assoclist_entry entry;
431         FILE *arp;
432
433         ap = infra = passive = 0;
434
435         wl_ioctl(ifname, WLC_GET_AP, &ap, sizeof(ap));
436         wl_ioctl(ifname, WLC_GET_INFRA, &infra, sizeof(infra));
437         wl_ioctl(ifname, WLC_GET_PASSIVE, &passive, sizeof(passive));
438
439         if (wl_get_noise(ifname, &noise))
440                 noise = 0;
441
442         if ((ap || infra || passive) && ((macs = wl_read_assoclist(ifname)) != NULL))
443         {
444                 for (i = 0, j = 0; i < macs->count; i++, j += sizeof(struct iwinfo_assoclist_entry))
445                 {
446                         memset(&entry, 0, sizeof(entry));
447                         memcpy(rssi.mac, &macs->ea[i], 6);
448
449                         if (!wl_ioctl(ifname, WLC_GET_RSSI, &rssi, sizeof(struct wl_sta_rssi)))
450                                 entry.signal = (rssi.rssi - 0x100);
451                         else
452                                 entry.signal = 0;
453
454                         entry.noise = noise;
455                         memcpy(entry.mac, &macs->ea[i], 6);
456                         wl_get_assoclist_cb(ifname, &entry);
457
458                         memcpy(&buf[j], &entry, sizeof(entry));
459                 }
460
461                 *len = j;
462                 free(macs);
463                 return 0;
464         }
465         else if ((arp = fopen("/proc/net/arp", "r")) != NULL)
466         {
467                 j = 0;
468
469                 while (fgets(line, sizeof(line), arp) != NULL)
470                 {
471                         if (sscanf(line, "%*s 0x%*d 0x%*d %17s %*s %s", macstr, devstr) && !strcmp(devstr, ifname))
472                         {
473                                 rssi.mac[0] = strtol(&macstr[0],  NULL, 16);
474                                 rssi.mac[1] = strtol(&macstr[3],  NULL, 16);
475                                 rssi.mac[2] = strtol(&macstr[6],  NULL, 16);
476                                 rssi.mac[3] = strtol(&macstr[9],  NULL, 16);
477                                 rssi.mac[4] = strtol(&macstr[12], NULL, 16);
478                                 rssi.mac[5] = strtol(&macstr[15], NULL, 16);
479
480                                 if (!wl_ioctl(ifname, WLC_GET_RSSI, &rssi, sizeof(struct wl_sta_rssi)))
481                                         entry.signal = (rssi.rssi - 0x100);
482                                 else
483                                         entry.signal = 0;
484
485                                 entry.noise = noise;
486                                 memcpy(entry.mac, rssi.mac, 6);
487                                 memcpy(&buf[j], &entry, sizeof(entry));
488
489                                 j += sizeof(entry);
490                         }
491                 }
492
493                 *len = j;
494                 (void) fclose(arp);
495                 return 0;
496         }
497
498         return -1;
499 }
500
501 int wl_get_txpwrlist(const char *ifname, char *buf, int *len)
502 {
503         struct iwinfo_txpwrlist_entry entry;
504         uint8_t dbm[11] = { 0, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 };
505         uint8_t mw[11]  = { 1, 3, 6, 10, 15, 25, 39, 63, 100, 158, 251 };
506         int i;
507
508         for (i = 0; i < 11; i++)
509         {
510                 entry.dbm = dbm[i];
511                 entry.mw  = mw[i];
512                 memcpy(&buf[i*sizeof(entry)], &entry, sizeof(entry));
513         }
514
515         *len = 11 * sizeof(entry);
516         return 0;
517 }
518
519 int wl_get_scanlist(const char *ifname, char *buf, int *len)
520 {
521         return wext_get_scanlist(ifname, buf, len);
522 }
523
524 int wl_get_freqlist(const char *ifname, char *buf, int *len)
525 {
526         return wext_get_freqlist(ifname, buf, len);
527 }
528
529 int wl_get_country(const char *ifname, char *buf)
530 {
531         char ccode[WLC_CNTRY_BUF_SZ];
532
533         if (!wl_ioctl(ifname, WLC_GET_COUNTRY, ccode, WLC_CNTRY_BUF_SZ))
534         {
535                 /* IL0 -> World */
536                 if (!strcmp(ccode, "IL0"))
537                         sprintf(buf, "00");
538
539                 /* YU -> RS */
540                 else if (!strcmp(ccode, "YU"))
541                         sprintf(buf, "RS");
542
543                 else
544                         memcpy(buf, ccode, 2);
545
546                 return 0;
547         }
548
549         return -1;
550 }
551
552 int wl_get_countrylist(const char *ifname, char *buf, int *len)
553 {
554         int i, count;
555         char cdata[WLC_IOCTL_MAXLEN];
556         struct iwinfo_country_entry *c = (struct iwinfo_country_entry *)buf;
557         wl_country_list_t *cl = (wl_country_list_t *)cdata;
558
559         cl->buflen = sizeof(cdata);
560
561         if (!wl_ioctl(ifname, WLC_GET_COUNTRY_LIST, cl, cl->buflen))
562         {
563                 for (i = 0, count = 0; i < cl->count; i++, c++)
564                 {
565                         sprintf(c->ccode, &cl->country_abbrev[i * WLC_CNTRY_BUF_SZ]);
566                         c->iso3166 = c->ccode[0] * 256 + c->ccode[1];
567
568                         /* IL0 -> World */
569                         if (!strcmp(c->ccode, "IL0"))
570                                 c->iso3166 = 0x3030;
571
572                         /* YU -> RS */
573                         else if (!strcmp(c->ccode, "YU"))
574                                 c->iso3166 = 0x5253;
575                 }
576
577                 *len = (i * sizeof(struct iwinfo_country_entry));
578                 return 0;
579         }
580
581         return -1;
582 }
583
584 int wl_get_hwmodelist(const char *ifname, int *buf)
585 {
586         return wext_get_hwmodelist(ifname, buf);
587 }
588
589 int wl_get_mbssid_support(const char *ifname, int *buf)
590 {
591         wlc_rev_info_t revinfo;
592
593         /* Multi bssid support only works on corerev >= 9 */
594         if (!wl_ioctl(ifname, WLC_GET_REVINFO, &revinfo, sizeof(revinfo)))
595         {
596                 if (revinfo.corerev >= 9)
597                 {
598                         *buf = 1;
599                         return 0;
600                 }
601         }
602
603         return -1;
604 }
605
606 int wl_get_hardware_id(const char *ifname, char *buf)
607 {
608         wlc_rev_info_t revinfo;
609         struct iwinfo_hardware_id *ids = (struct iwinfo_hardware_id *)buf;
610
611         if (wl_ioctl(ifname, WLC_GET_REVINFO, &revinfo, sizeof(revinfo)))
612                 return -1;
613
614         ids->vendor_id = revinfo.vendorid;
615         ids->device_id = revinfo.deviceid;
616         ids->subsystem_vendor_id = revinfo.boardvendor;
617         ids->subsystem_device_id = revinfo.boardid;
618
619         return 0;
620 }
621
622 int wl_get_hardware_name(const char *ifname, char *buf)
623 {
624         struct iwinfo_hardware_id ids;
625
626         if (wl_get_hardware_id(ifname, (char *)&ids))
627                 return -1;
628
629         sprintf(buf, "Broadcom BCM%04X", ids.device_id);
630
631         return 0;
632 }
633
634 int wl_get_txpower_offset(const char *ifname, int *buf)
635 {
636         FILE *p;
637         char off[8];
638
639         *buf = 0;
640
641         if ((p = popen("/usr/sbin/nvram get opo", "r")) != NULL)
642         {
643                 if (fread(off, 1, sizeof(off), p))
644                         *buf = strtoul(off, NULL, 16);
645
646                 pclose(p);
647         }
648
649         return 0;
650 }
651
652 int wl_get_frequency_offset(const char *ifname, int *buf)
653 {
654         /* Stub */
655         *buf = 0;
656         return -1;
657 }