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Commit | Line | Data |
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6fc6879b JM |
1 | /* |
2 | * hostapd / Hardware feature query and different modes | |
3 | * Copyright 2002-2003, Instant802 Networks, Inc. | |
4 | * Copyright 2005-2006, Devicescape Software, Inc. | |
7fa56233 | 5 | * Copyright (c) 2008-2012, Jouni Malinen <j@w1.fi> |
6fc6879b | 6 | * |
5f9c134a JM |
7 | * This software may be distributed under the terms of the BSD license. |
8 | * See README for more details. | |
6fc6879b JM |
9 | */ |
10 | ||
1057d78e | 11 | #include "utils/includes.h" |
6fc6879b | 12 | |
1057d78e JM |
13 | #include "utils/common.h" |
14 | #include "utils/eloop.h" | |
90973fb2 JM |
15 | #include "common/ieee802_11_defs.h" |
16 | #include "common/ieee802_11_common.h" | |
ae134e1d | 17 | #include "common/wpa_ctrl.h" |
5f10b7f4 | 18 | #include "common/hw_features_common.h" |
6226e38d JM |
19 | #include "hostapd.h" |
20 | #include "ap_config.h" | |
6e6e8c31 | 21 | #include "ap_drv_ops.h" |
50f4f2a0 | 22 | #include "acs.h" |
9c47f6a2 PX |
23 | #include "ieee802_11.h" |
24 | #include "beacon.h" | |
6226e38d | 25 | #include "hw_features.h" |
6fc6879b JM |
26 | |
27 | ||
28 | void hostapd_free_hw_features(struct hostapd_hw_modes *hw_features, | |
29 | size_t num_hw_features) | |
30 | { | |
31 | size_t i; | |
32 | ||
33 | if (hw_features == NULL) | |
34 | return; | |
35 | ||
36 | for (i = 0; i < num_hw_features; i++) { | |
37 | os_free(hw_features[i].channels); | |
38 | os_free(hw_features[i].rates); | |
39 | } | |
40 | ||
41 | os_free(hw_features); | |
42 | } | |
43 | ||
44 | ||
e76da505 JD |
45 | #ifndef CONFIG_NO_STDOUT_DEBUG |
46 | static char * dfs_info(struct hostapd_channel_data *chan) | |
47 | { | |
48 | static char info[256]; | |
49 | char *state; | |
50 | ||
51 | switch (chan->flag & HOSTAPD_CHAN_DFS_MASK) { | |
52 | case HOSTAPD_CHAN_DFS_UNKNOWN: | |
53 | state = "unknown"; | |
54 | break; | |
55 | case HOSTAPD_CHAN_DFS_USABLE: | |
56 | state = "usable"; | |
57 | break; | |
58 | case HOSTAPD_CHAN_DFS_UNAVAILABLE: | |
59 | state = "unavailable"; | |
60 | break; | |
61 | case HOSTAPD_CHAN_DFS_AVAILABLE: | |
62 | state = "available"; | |
63 | break; | |
64 | default: | |
65 | return ""; | |
66 | } | |
67 | os_snprintf(info, sizeof(info), " (DFS state = %s)", state); | |
68 | info[sizeof(info) - 1] = '\0'; | |
69 | ||
70 | return info; | |
71 | } | |
72 | #endif /* CONFIG_NO_STDOUT_DEBUG */ | |
73 | ||
74 | ||
6fc6879b JM |
75 | int hostapd_get_hw_features(struct hostapd_iface *iface) |
76 | { | |
77 | struct hostapd_data *hapd = iface->bss[0]; | |
948d3a87 | 78 | int i, j; |
6fc6879b JM |
79 | u16 num_modes, flags; |
80 | struct hostapd_hw_modes *modes; | |
aa56e36d | 81 | u8 dfs_domain; |
6fc6879b | 82 | |
85141289 JM |
83 | if (hostapd_drv_none(hapd)) |
84 | return -1; | |
aa56e36d VT |
85 | modes = hostapd_get_hw_feature_data(hapd, &num_modes, &flags, |
86 | &dfs_domain); | |
6fc6879b JM |
87 | if (modes == NULL) { |
88 | hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211, | |
89 | HOSTAPD_LEVEL_DEBUG, | |
90 | "Fetching hardware channel/rate support not " | |
91 | "supported."); | |
92 | return -1; | |
93 | } | |
94 | ||
95 | iface->hw_flags = flags; | |
04f667fc | 96 | iface->dfs_domain = dfs_domain; |
6fc6879b JM |
97 | |
98 | hostapd_free_hw_features(iface->hw_features, iface->num_hw_features); | |
99 | iface->hw_features = modes; | |
100 | iface->num_hw_features = num_modes; | |
101 | ||
102 | for (i = 0; i < num_modes; i++) { | |
103 | struct hostapd_hw_modes *feature = &modes[i]; | |
e76da505 JD |
104 | int dfs_enabled = hapd->iconf->ieee80211h && |
105 | (iface->drv_flags & WPA_DRIVER_FLAGS_RADAR); | |
106 | ||
6fc6879b JM |
107 | /* set flag for channels we can use in current regulatory |
108 | * domain */ | |
109 | for (j = 0; j < feature->num_channels; j++) { | |
e76da505 JD |
110 | int dfs = 0; |
111 | ||
10b83bd7 JM |
112 | /* |
113 | * Disable all channels that are marked not to allow | |
0a443580 IP |
114 | * to initiate radiation (a.k.a. passive scan and no |
115 | * IBSS). | |
e76da505 | 116 | * Use radar channels only if the driver supports DFS. |
10b83bd7 | 117 | */ |
e76da505 JD |
118 | if ((feature->channels[j].flag & |
119 | HOSTAPD_CHAN_RADAR) && dfs_enabled) { | |
120 | dfs = 1; | |
70634eec AS |
121 | } else if (((feature->channels[j].flag & |
122 | HOSTAPD_CHAN_RADAR) && | |
123 | !(iface->drv_flags & | |
124 | WPA_DRIVER_FLAGS_DFS_OFFLOAD)) || | |
125 | (feature->channels[j].flag & | |
0a443580 | 126 | HOSTAPD_CHAN_NO_IR)) { |
6fc6879b | 127 | feature->channels[j].flag |= |
10b83bd7 | 128 | HOSTAPD_CHAN_DISABLED; |
e76da505 JD |
129 | } |
130 | ||
10b83bd7 JM |
131 | if (feature->channels[j].flag & HOSTAPD_CHAN_DISABLED) |
132 | continue; | |
e76da505 | 133 | |
10b83bd7 | 134 | wpa_printf(MSG_MSGDUMP, "Allowed channel: mode=%d " |
e76da505 | 135 | "chan=%d freq=%d MHz max_tx_power=%d dBm%s", |
10b83bd7 JM |
136 | feature->mode, |
137 | feature->channels[j].chan, | |
bf01d8bc | 138 | feature->channels[j].freq, |
e76da505 JD |
139 | feature->channels[j].max_tx_power, |
140 | dfs ? dfs_info(&feature->channels[j]) : ""); | |
6fc6879b JM |
141 | } |
142 | } | |
143 | ||
948d3a87 | 144 | return 0; |
6fc6879b JM |
145 | } |
146 | ||
147 | ||
34445d12 | 148 | int hostapd_prepare_rates(struct hostapd_iface *iface, |
5a5009dc | 149 | struct hostapd_hw_modes *mode) |
6fc6879b JM |
150 | { |
151 | int i, num_basic_rates = 0; | |
152 | int basic_rates_a[] = { 60, 120, 240, -1 }; | |
153 | int basic_rates_b[] = { 10, 20, -1 }; | |
154 | int basic_rates_g[] = { 10, 20, 55, 110, -1 }; | |
155 | int *basic_rates; | |
156 | ||
34445d12 JM |
157 | if (iface->conf->basic_rates) |
158 | basic_rates = iface->conf->basic_rates; | |
6fc6879b JM |
159 | else switch (mode->mode) { |
160 | case HOSTAPD_MODE_IEEE80211A: | |
161 | basic_rates = basic_rates_a; | |
162 | break; | |
163 | case HOSTAPD_MODE_IEEE80211B: | |
164 | basic_rates = basic_rates_b; | |
165 | break; | |
166 | case HOSTAPD_MODE_IEEE80211G: | |
167 | basic_rates = basic_rates_g; | |
168 | break; | |
7829894c VK |
169 | case HOSTAPD_MODE_IEEE80211AD: |
170 | return 0; /* No basic rates for 11ad */ | |
6fc6879b JM |
171 | default: |
172 | return -1; | |
173 | } | |
174 | ||
e5693c47 JM |
175 | i = 0; |
176 | while (basic_rates[i] >= 0) | |
177 | i++; | |
f0898e95 JM |
178 | if (i) |
179 | i++; /* -1 termination */ | |
34445d12 | 180 | os_free(iface->basic_rates); |
78018ae9 | 181 | iface->basic_rates = os_malloc(i * sizeof(int)); |
34445d12 | 182 | if (iface->basic_rates) |
78018ae9 | 183 | os_memcpy(iface->basic_rates, basic_rates, i * sizeof(int)); |
6fc6879b | 184 | |
34445d12 JM |
185 | os_free(iface->current_rates); |
186 | iface->num_rates = 0; | |
6fc6879b | 187 | |
34445d12 | 188 | iface->current_rates = |
f9884c09 | 189 | os_calloc(mode->num_rates, sizeof(struct hostapd_rate_data)); |
34445d12 | 190 | if (!iface->current_rates) { |
6fc6879b JM |
191 | wpa_printf(MSG_ERROR, "Failed to allocate memory for rate " |
192 | "table."); | |
193 | return -1; | |
194 | } | |
195 | ||
196 | for (i = 0; i < mode->num_rates; i++) { | |
197 | struct hostapd_rate_data *rate; | |
198 | ||
34445d12 JM |
199 | if (iface->conf->supported_rates && |
200 | !hostapd_rate_found(iface->conf->supported_rates, | |
fb7842aa | 201 | mode->rates[i])) |
6fc6879b JM |
202 | continue; |
203 | ||
34445d12 | 204 | rate = &iface->current_rates[iface->num_rates]; |
fb7842aa | 205 | rate->rate = mode->rates[i]; |
6fc6879b JM |
206 | if (hostapd_rate_found(basic_rates, rate->rate)) { |
207 | rate->flags |= HOSTAPD_RATE_BASIC; | |
208 | num_basic_rates++; | |
fb7842aa | 209 | } |
6fc6879b | 210 | wpa_printf(MSG_DEBUG, "RATE[%d] rate=%d flags=0x%x", |
34445d12 JM |
211 | iface->num_rates, rate->rate, rate->flags); |
212 | iface->num_rates++; | |
6fc6879b JM |
213 | } |
214 | ||
34445d12 JM |
215 | if ((iface->num_rates == 0 || num_basic_rates == 0) && |
216 | (!iface->conf->ieee80211n || !iface->conf->require_ht)) { | |
6fc6879b JM |
217 | wpa_printf(MSG_ERROR, "No rates remaining in supported/basic " |
218 | "rate sets (%d,%d).", | |
34445d12 | 219 | iface->num_rates, num_basic_rates); |
6fc6879b JM |
220 | return -1; |
221 | } | |
222 | ||
223 | return 0; | |
224 | } | |
225 | ||
226 | ||
3e0cb2c5 JM |
227 | #ifdef CONFIG_IEEE80211N |
228 | static int ieee80211n_allowed_ht40_channel_pair(struct hostapd_iface *iface) | |
229 | { | |
5f9b4afd AB |
230 | int pri_freq, sec_freq; |
231 | struct hostapd_channel_data *p_chan, *s_chan; | |
3e0cb2c5 | 232 | |
5f9b4afd AB |
233 | pri_freq = iface->freq; |
234 | sec_freq = pri_freq + iface->conf->secondary_channel * 20; | |
235 | ||
236 | if (!iface->current_mode) | |
237 | return 0; | |
3e0cb2c5 | 238 | |
5f9b4afd AB |
239 | p_chan = hw_get_channel_freq(iface->current_mode->mode, pri_freq, NULL, |
240 | iface->hw_features, | |
241 | iface->num_hw_features); | |
242 | ||
243 | s_chan = hw_get_channel_freq(iface->current_mode->mode, sec_freq, NULL, | |
244 | iface->hw_features, | |
245 | iface->num_hw_features); | |
246 | ||
247 | return allowed_ht40_channel_pair(iface->current_mode->mode, | |
248 | p_chan, s_chan); | |
3e0cb2c5 | 249 | } |
30fd5f14 JM |
250 | |
251 | ||
5eb4e3d0 JM |
252 | static void ieee80211n_switch_pri_sec(struct hostapd_iface *iface) |
253 | { | |
254 | if (iface->conf->secondary_channel > 0) { | |
255 | iface->conf->channel += 4; | |
5f9b4afd | 256 | iface->freq += 20; |
5eb4e3d0 JM |
257 | iface->conf->secondary_channel = -1; |
258 | } else { | |
259 | iface->conf->channel -= 4; | |
5f9b4afd | 260 | iface->freq -= 20; |
5eb4e3d0 JM |
261 | iface->conf->secondary_channel = 1; |
262 | } | |
263 | } | |
264 | ||
265 | ||
ad1e68e6 JM |
266 | static int ieee80211n_check_40mhz_5g(struct hostapd_iface *iface, |
267 | struct wpa_scan_results *scan_res) | |
5eb4e3d0 | 268 | { |
5f9b4afd | 269 | unsigned int pri_freq, sec_freq; |
0e550fe4 | 270 | int res; |
5f9b4afd | 271 | struct hostapd_channel_data *pri_chan, *sec_chan; |
5eb4e3d0 | 272 | |
5f9b4afd AB |
273 | pri_freq = iface->freq; |
274 | sec_freq = pri_freq + iface->conf->secondary_channel * 20; | |
275 | ||
276 | if (!iface->current_mode) | |
277 | return 0; | |
278 | pri_chan = hw_get_channel_freq(iface->current_mode->mode, pri_freq, | |
279 | NULL, iface->hw_features, | |
280 | iface->num_hw_features); | |
281 | sec_chan = hw_get_channel_freq(iface->current_mode->mode, sec_freq, | |
282 | NULL, iface->hw_features, | |
283 | iface->num_hw_features); | |
5eb4e3d0 | 284 | |
5f9b4afd | 285 | res = check_40mhz_5g(scan_res, pri_chan, sec_chan); |
0e550fe4 | 286 | |
55413ce0 JM |
287 | if (res == 2) { |
288 | if (iface->conf->no_pri_sec_switch) { | |
289 | wpa_printf(MSG_DEBUG, | |
290 | "Cannot switch PRI/SEC channels due to local constraint"); | |
291 | } else { | |
292 | ieee80211n_switch_pri_sec(iface); | |
293 | } | |
294 | } | |
5eb4e3d0 | 295 | |
0e550fe4 | 296 | return !!res; |
5eb4e3d0 JM |
297 | } |
298 | ||
299 | ||
ad1e68e6 JM |
300 | static int ieee80211n_check_40mhz_2g4(struct hostapd_iface *iface, |
301 | struct wpa_scan_results *scan_res) | |
5eb4e3d0 | 302 | { |
a828f626 | 303 | int pri_chan, sec_chan; |
5eb4e3d0 | 304 | |
a828f626 JD |
305 | pri_chan = iface->conf->channel; |
306 | sec_chan = pri_chan + iface->conf->secondary_channel * 4; | |
5eb4e3d0 | 307 | |
a828f626 JD |
308 | return check_40mhz_2g4(iface->current_mode, scan_res, pri_chan, |
309 | sec_chan); | |
5eb4e3d0 JM |
310 | } |
311 | ||
312 | ||
ad1e68e6 | 313 | static void ieee80211n_check_scan(struct hostapd_iface *iface) |
5eb4e3d0 | 314 | { |
ad1e68e6 | 315 | struct wpa_scan_results *scan_res; |
5eb4e3d0 | 316 | int oper40; |
7615078c | 317 | int res; |
5eb4e3d0 | 318 | |
5eb4e3d0 | 319 | /* Check list of neighboring BSSes (from scan) to see whether 40 MHz is |
7fa56233 | 320 | * allowed per IEEE Std 802.11-2012, 10.15.3.2 */ |
5eb4e3d0 | 321 | |
ad1e68e6 JM |
322 | iface->scan_cb = NULL; |
323 | ||
324 | scan_res = hostapd_driver_get_scan_results(iface->bss[0]); | |
325 | if (scan_res == NULL) { | |
326 | hostapd_setup_interface_complete(iface, 1); | |
327 | return; | |
328 | } | |
329 | ||
5eb4e3d0 | 330 | if (iface->current_mode->mode == HOSTAPD_MODE_IEEE80211A) |
ad1e68e6 | 331 | oper40 = ieee80211n_check_40mhz_5g(iface, scan_res); |
5eb4e3d0 | 332 | else |
ad1e68e6 JM |
333 | oper40 = ieee80211n_check_40mhz_2g4(iface, scan_res); |
334 | wpa_scan_results_free(scan_res); | |
5eb4e3d0 | 335 | |
9c47f6a2 | 336 | iface->secondary_ch = iface->conf->secondary_channel; |
5eb4e3d0 JM |
337 | if (!oper40) { |
338 | wpa_printf(MSG_INFO, "20/40 MHz operation not permitted on " | |
339 | "channel pri=%d sec=%d based on overlapping BSSes", | |
340 | iface->conf->channel, | |
341 | iface->conf->channel + | |
342 | iface->conf->secondary_channel * 4); | |
343 | iface->conf->secondary_channel = 0; | |
9c47f6a2 PX |
344 | if (iface->drv_flags & WPA_DRIVER_FLAGS_HT_2040_COEX) { |
345 | /* | |
346 | * TODO: Could consider scheduling another scan to check | |
347 | * if channel width can be changed if no coex reports | |
348 | * are received from associating stations. | |
349 | */ | |
350 | } | |
5eb4e3d0 | 351 | } |
ad1e68e6 | 352 | |
7615078c | 353 | res = ieee80211n_allowed_ht40_channel_pair(iface); |
9c47f6a2 PX |
354 | if (!res) { |
355 | iface->conf->secondary_channel = 0; | |
c6b7ac07 JC |
356 | hostapd_set_oper_centr_freq_seg0_idx(iface->conf, 0); |
357 | hostapd_set_oper_centr_freq_seg1_idx(iface->conf, 0); | |
358 | hostapd_set_oper_chwidth(iface->conf, CHANWIDTH_USE_HT); | |
236053e5 | 359 | res = 1; |
9c47f6a2 PX |
360 | wpa_printf(MSG_INFO, "Fallback to 20 MHz"); |
361 | } | |
362 | ||
7615078c | 363 | hostapd_setup_interface_complete(iface, !res); |
ad1e68e6 JM |
364 | } |
365 | ||
366 | ||
7fa56233 JM |
367 | static void ieee80211n_scan_channels_2g4(struct hostapd_iface *iface, |
368 | struct wpa_driver_scan_params *params) | |
369 | { | |
370 | /* Scan only the affected frequency range */ | |
371 | int pri_freq, sec_freq; | |
372 | int affected_start, affected_end; | |
373 | int i, pos; | |
374 | struct hostapd_hw_modes *mode; | |
375 | ||
376 | if (iface->current_mode == NULL) | |
377 | return; | |
378 | ||
5f9b4afd | 379 | pri_freq = iface->freq; |
7fa56233 JM |
380 | if (iface->conf->secondary_channel > 0) |
381 | sec_freq = pri_freq + 20; | |
382 | else | |
383 | sec_freq = pri_freq - 20; | |
2eb5967d JM |
384 | /* |
385 | * Note: Need to find the PRI channel also in cases where the affected | |
386 | * channel is the SEC channel of a 40 MHz BSS, so need to include the | |
387 | * scanning coverage here to be 40 MHz from the center frequency. | |
388 | */ | |
389 | affected_start = (pri_freq + sec_freq) / 2 - 40; | |
390 | affected_end = (pri_freq + sec_freq) / 2 + 40; | |
7fa56233 JM |
391 | wpa_printf(MSG_DEBUG, "40 MHz affected channel range: [%d,%d] MHz", |
392 | affected_start, affected_end); | |
393 | ||
394 | mode = iface->current_mode; | |
f9884c09 | 395 | params->freqs = os_calloc(mode->num_channels + 1, sizeof(int)); |
7fa56233 JM |
396 | if (params->freqs == NULL) |
397 | return; | |
398 | pos = 0; | |
399 | ||
400 | for (i = 0; i < mode->num_channels; i++) { | |
401 | struct hostapd_channel_data *chan = &mode->channels[i]; | |
402 | if (chan->flag & HOSTAPD_CHAN_DISABLED) | |
403 | continue; | |
404 | if (chan->freq < affected_start || | |
405 | chan->freq > affected_end) | |
406 | continue; | |
407 | params->freqs[pos++] = chan->freq; | |
408 | } | |
409 | } | |
410 | ||
411 | ||
afadaff9 JM |
412 | static void ieee80211n_scan_channels_5g(struct hostapd_iface *iface, |
413 | struct wpa_driver_scan_params *params) | |
414 | { | |
415 | /* Scan only the affected frequency range */ | |
416 | int pri_freq; | |
417 | int affected_start, affected_end; | |
418 | int i, pos; | |
419 | struct hostapd_hw_modes *mode; | |
420 | ||
421 | if (iface->current_mode == NULL) | |
422 | return; | |
423 | ||
5f9b4afd | 424 | pri_freq = iface->freq; |
afadaff9 JM |
425 | if (iface->conf->secondary_channel > 0) { |
426 | affected_start = pri_freq - 10; | |
427 | affected_end = pri_freq + 30; | |
428 | } else { | |
429 | affected_start = pri_freq - 30; | |
430 | affected_end = pri_freq + 10; | |
431 | } | |
432 | wpa_printf(MSG_DEBUG, "40 MHz affected channel range: [%d,%d] MHz", | |
433 | affected_start, affected_end); | |
434 | ||
435 | mode = iface->current_mode; | |
436 | params->freqs = os_calloc(mode->num_channels + 1, sizeof(int)); | |
437 | if (params->freqs == NULL) | |
438 | return; | |
439 | pos = 0; | |
440 | ||
441 | for (i = 0; i < mode->num_channels; i++) { | |
442 | struct hostapd_channel_data *chan = &mode->channels[i]; | |
443 | if (chan->flag & HOSTAPD_CHAN_DISABLED) | |
444 | continue; | |
445 | if (chan->freq < affected_start || | |
446 | chan->freq > affected_end) | |
447 | continue; | |
448 | params->freqs[pos++] = chan->freq; | |
449 | } | |
450 | } | |
451 | ||
452 | ||
5f0bca77 PX |
453 | static void ap_ht40_scan_retry(void *eloop_data, void *user_data) |
454 | { | |
455 | #define HT2040_COEX_SCAN_RETRY 15 | |
456 | struct hostapd_iface *iface = eloop_data; | |
457 | struct wpa_driver_scan_params params; | |
458 | int ret; | |
459 | ||
460 | os_memset(¶ms, 0, sizeof(params)); | |
461 | if (iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G) | |
462 | ieee80211n_scan_channels_2g4(iface, ¶ms); | |
463 | else | |
464 | ieee80211n_scan_channels_5g(iface, ¶ms); | |
465 | ||
466 | ret = hostapd_driver_scan(iface->bss[0], ¶ms); | |
467 | iface->num_ht40_scan_tries++; | |
468 | os_free(params.freqs); | |
469 | ||
470 | if (ret == -EBUSY && | |
471 | iface->num_ht40_scan_tries < HT2040_COEX_SCAN_RETRY) { | |
472 | wpa_printf(MSG_ERROR, | |
473 | "Failed to request a scan of neighboring BSSes ret=%d (%s) - try to scan again (attempt %d)", | |
474 | ret, strerror(-ret), iface->num_ht40_scan_tries); | |
475 | eloop_register_timeout(1, 0, ap_ht40_scan_retry, iface, NULL); | |
476 | return; | |
477 | } | |
478 | ||
479 | if (ret == 0) { | |
480 | iface->scan_cb = ieee80211n_check_scan; | |
481 | return; | |
482 | } | |
483 | ||
484 | wpa_printf(MSG_DEBUG, | |
485 | "Failed to request a scan in device, bringing up in HT20 mode"); | |
486 | iface->conf->secondary_channel = 0; | |
487 | iface->conf->ht_capab &= ~HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET; | |
488 | hostapd_setup_interface_complete(iface, 0); | |
489 | } | |
490 | ||
491 | ||
492 | void hostapd_stop_setup_timers(struct hostapd_iface *iface) | |
493 | { | |
494 | eloop_cancel_timeout(ap_ht40_scan_retry, iface, NULL); | |
495 | } | |
496 | ||
497 | ||
ad1e68e6 JM |
498 | static int ieee80211n_check_40mhz(struct hostapd_iface *iface) |
499 | { | |
500 | struct wpa_driver_scan_params params; | |
5f0bca77 | 501 | int ret; |
ad1e68e6 | 502 | |
6bdc43c4 AB |
503 | /* Check that HT40 is used and PRI / SEC switch is allowed */ |
504 | if (!iface->conf->secondary_channel || iface->conf->no_pri_sec_switch) | |
505 | return 0; | |
ad1e68e6 | 506 | |
e1c5faf0 | 507 | hostapd_set_state(iface, HAPD_IFACE_HT_SCAN); |
ad1e68e6 JM |
508 | wpa_printf(MSG_DEBUG, "Scan for neighboring BSSes prior to enabling " |
509 | "40 MHz channel"); | |
510 | os_memset(¶ms, 0, sizeof(params)); | |
7fa56233 JM |
511 | if (iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G) |
512 | ieee80211n_scan_channels_2g4(iface, ¶ms); | |
afadaff9 JM |
513 | else |
514 | ieee80211n_scan_channels_5g(iface, ¶ms); | |
5f0bca77 PX |
515 | |
516 | ret = hostapd_driver_scan(iface->bss[0], ¶ms); | |
517 | os_free(params.freqs); | |
518 | ||
519 | if (ret == -EBUSY) { | |
520 | wpa_printf(MSG_ERROR, | |
521 | "Failed to request a scan of neighboring BSSes ret=%d (%s) - try to scan again", | |
522 | ret, strerror(-ret)); | |
523 | iface->num_ht40_scan_tries = 1; | |
524 | eloop_cancel_timeout(ap_ht40_scan_retry, iface, NULL); | |
525 | eloop_register_timeout(1, 0, ap_ht40_scan_retry, iface, NULL); | |
526 | return 1; | |
527 | } | |
528 | ||
529 | if (ret < 0) { | |
530 | wpa_printf(MSG_ERROR, | |
531 | "Failed to request a scan of neighboring BSSes ret=%d (%s)", | |
532 | ret, strerror(-ret)); | |
ad1e68e6 JM |
533 | return -1; |
534 | } | |
535 | ||
536 | iface->scan_cb = ieee80211n_check_scan; | |
537 | return 1; | |
5eb4e3d0 JM |
538 | } |
539 | ||
540 | ||
30fd5f14 JM |
541 | static int ieee80211n_supported_ht_capab(struct hostapd_iface *iface) |
542 | { | |
543 | u16 hw = iface->current_mode->ht_capab; | |
544 | u16 conf = iface->conf->ht_capab; | |
545 | ||
30fd5f14 JM |
546 | if ((conf & HT_CAP_INFO_LDPC_CODING_CAP) && |
547 | !(hw & HT_CAP_INFO_LDPC_CODING_CAP)) { | |
548 | wpa_printf(MSG_ERROR, "Driver does not support configured " | |
549 | "HT capability [LDPC]"); | |
550 | return 0; | |
551 | } | |
552 | ||
857d9422 MM |
553 | /* |
554 | * Driver ACS chosen channel may not be HT40 due to internal driver | |
555 | * restrictions. | |
556 | */ | |
557 | if (!iface->conf->acs && (conf & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET) && | |
30fd5f14 JM |
558 | !(hw & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) { |
559 | wpa_printf(MSG_ERROR, "Driver does not support configured " | |
560 | "HT capability [HT40*]"); | |
561 | return 0; | |
562 | } | |
563 | ||
04ee647d EP |
564 | switch (conf & HT_CAP_INFO_SMPS_MASK) { |
565 | case HT_CAP_INFO_SMPS_STATIC: | |
566 | if (!(iface->smps_modes & WPA_DRIVER_SMPS_MODE_STATIC)) { | |
567 | wpa_printf(MSG_ERROR, | |
568 | "Driver does not support configured HT capability [SMPS-STATIC]"); | |
569 | return 0; | |
570 | } | |
571 | break; | |
572 | case HT_CAP_INFO_SMPS_DYNAMIC: | |
573 | if (!(iface->smps_modes & WPA_DRIVER_SMPS_MODE_DYNAMIC)) { | |
574 | wpa_printf(MSG_ERROR, | |
575 | "Driver does not support configured HT capability [SMPS-DYNAMIC]"); | |
576 | return 0; | |
577 | } | |
578 | break; | |
579 | case HT_CAP_INFO_SMPS_DISABLED: | |
580 | default: | |
581 | break; | |
30fd5f14 JM |
582 | } |
583 | ||
584 | if ((conf & HT_CAP_INFO_GREEN_FIELD) && | |
585 | !(hw & HT_CAP_INFO_GREEN_FIELD)) { | |
586 | wpa_printf(MSG_ERROR, "Driver does not support configured " | |
587 | "HT capability [GF]"); | |
588 | return 0; | |
589 | } | |
590 | ||
591 | if ((conf & HT_CAP_INFO_SHORT_GI20MHZ) && | |
592 | !(hw & HT_CAP_INFO_SHORT_GI20MHZ)) { | |
593 | wpa_printf(MSG_ERROR, "Driver does not support configured " | |
594 | "HT capability [SHORT-GI-20]"); | |
595 | return 0; | |
596 | } | |
597 | ||
598 | if ((conf & HT_CAP_INFO_SHORT_GI40MHZ) && | |
599 | !(hw & HT_CAP_INFO_SHORT_GI40MHZ)) { | |
600 | wpa_printf(MSG_ERROR, "Driver does not support configured " | |
601 | "HT capability [SHORT-GI-40]"); | |
602 | return 0; | |
603 | } | |
604 | ||
605 | if ((conf & HT_CAP_INFO_TX_STBC) && !(hw & HT_CAP_INFO_TX_STBC)) { | |
606 | wpa_printf(MSG_ERROR, "Driver does not support configured " | |
607 | "HT capability [TX-STBC]"); | |
608 | return 0; | |
609 | } | |
610 | ||
611 | if ((conf & HT_CAP_INFO_RX_STBC_MASK) > | |
612 | (hw & HT_CAP_INFO_RX_STBC_MASK)) { | |
613 | wpa_printf(MSG_ERROR, "Driver does not support configured " | |
614 | "HT capability [RX-STBC*]"); | |
615 | return 0; | |
616 | } | |
617 | ||
618 | if ((conf & HT_CAP_INFO_DELAYED_BA) && | |
619 | !(hw & HT_CAP_INFO_DELAYED_BA)) { | |
620 | wpa_printf(MSG_ERROR, "Driver does not support configured " | |
621 | "HT capability [DELAYED-BA]"); | |
622 | return 0; | |
623 | } | |
624 | ||
625 | if ((conf & HT_CAP_INFO_MAX_AMSDU_SIZE) && | |
626 | !(hw & HT_CAP_INFO_MAX_AMSDU_SIZE)) { | |
627 | wpa_printf(MSG_ERROR, "Driver does not support configured " | |
628 | "HT capability [MAX-AMSDU-7935]"); | |
629 | return 0; | |
630 | } | |
631 | ||
632 | if ((conf & HT_CAP_INFO_DSSS_CCK40MHZ) && | |
633 | !(hw & HT_CAP_INFO_DSSS_CCK40MHZ)) { | |
634 | wpa_printf(MSG_ERROR, "Driver does not support configured " | |
635 | "HT capability [DSSS_CCK-40]"); | |
636 | return 0; | |
637 | } | |
638 | ||
30fd5f14 JM |
639 | if ((conf & HT_CAP_INFO_LSIG_TXOP_PROTECT_SUPPORT) && |
640 | !(hw & HT_CAP_INFO_LSIG_TXOP_PROTECT_SUPPORT)) { | |
641 | wpa_printf(MSG_ERROR, "Driver does not support configured " | |
642 | "HT capability [LSIG-TXOP-PROT]"); | |
643 | return 0; | |
644 | } | |
645 | ||
646 | return 1; | |
647 | } | |
ad1e68e6 | 648 | |
c781eb84 EP |
649 | |
650 | #ifdef CONFIG_IEEE80211AC | |
c781eb84 EP |
651 | static int ieee80211ac_supported_vht_capab(struct hostapd_iface *iface) |
652 | { | |
e7d0e97b YL |
653 | struct hostapd_hw_modes *mode = iface->current_mode; |
654 | u32 hw = mode->vht_capab; | |
c781eb84 EP |
655 | u32 conf = iface->conf->vht_capab; |
656 | ||
657 | wpa_printf(MSG_DEBUG, "hw vht capab: 0x%x, conf vht capab: 0x%x", | |
658 | hw, conf); | |
659 | ||
e7d0e97b YL |
660 | if (mode->mode == HOSTAPD_MODE_IEEE80211G && |
661 | iface->conf->bss[0]->vendor_vht && | |
662 | mode->vht_capab == 0 && iface->hw_features) { | |
663 | int i; | |
664 | ||
665 | for (i = 0; i < iface->num_hw_features; i++) { | |
666 | if (iface->hw_features[i].mode == | |
667 | HOSTAPD_MODE_IEEE80211A) { | |
668 | mode = &iface->hw_features[i]; | |
669 | hw = mode->vht_capab; | |
670 | wpa_printf(MSG_DEBUG, | |
671 | "update hw vht capab based on 5 GHz band: 0x%x", | |
672 | hw); | |
673 | break; | |
674 | } | |
675 | } | |
676 | } | |
677 | ||
a7a638c2 | 678 | return ieee80211ac_cap_check(hw, conf); |
c781eb84 EP |
679 | } |
680 | #endif /* CONFIG_IEEE80211AC */ | |
681 | ||
63e19404 JC |
682 | |
683 | #ifdef CONFIG_IEEE80211AX | |
684 | static int ieee80211ax_supported_he_capab(struct hostapd_iface *iface) | |
685 | { | |
686 | return 1; | |
687 | } | |
688 | #endif /* CONFIG_IEEE80211AX */ | |
689 | ||
ad1e68e6 JM |
690 | #endif /* CONFIG_IEEE80211N */ |
691 | ||
692 | ||
693 | int hostapd_check_ht_capab(struct hostapd_iface *iface) | |
694 | { | |
695 | #ifdef CONFIG_IEEE80211N | |
696 | int ret; | |
ee0030e8 AB |
697 | |
698 | if (is_6ghz_freq(iface->freq)) | |
699 | return 0; | |
ec2b8909 SM |
700 | if (!iface->conf->ieee80211n) |
701 | return 0; | |
80653771 VT |
702 | |
703 | if (iface->current_mode->mode != HOSTAPD_MODE_IEEE80211B && | |
704 | iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G && | |
705 | (iface->conf->ht_capab & HT_CAP_INFO_DSSS_CCK40MHZ)) { | |
706 | wpa_printf(MSG_DEBUG, | |
707 | "Disable HT capability [DSSS_CCK-40] on 5 GHz band"); | |
708 | iface->conf->ht_capab &= ~HT_CAP_INFO_DSSS_CCK40MHZ; | |
709 | } | |
710 | ||
1b4d3793 NS |
711 | if (!ieee80211n_supported_ht_capab(iface)) |
712 | return -1; | |
63e19404 JC |
713 | #ifdef CONFIG_IEEE80211AX |
714 | if (iface->conf->ieee80211ax && | |
715 | !ieee80211ax_supported_he_capab(iface)) | |
716 | return -1; | |
717 | #endif /* CONFIG_IEEE80211AX */ | |
c781eb84 | 718 | #ifdef CONFIG_IEEE80211AC |
72a09d43 SM |
719 | if (iface->conf->ieee80211ac && |
720 | !ieee80211ac_supported_vht_capab(iface)) | |
c781eb84 EP |
721 | return -1; |
722 | #endif /* CONFIG_IEEE80211AC */ | |
ad1e68e6 JM |
723 | ret = ieee80211n_check_40mhz(iface); |
724 | if (ret) | |
725 | return ret; | |
726 | if (!ieee80211n_allowed_ht40_channel_pair(iface)) | |
727 | return -1; | |
3e0cb2c5 JM |
728 | #endif /* CONFIG_IEEE80211N */ |
729 | ||
ad1e68e6 JM |
730 | return 0; |
731 | } | |
732 | ||
3e0cb2c5 | 733 | |
241dd76c AAL |
734 | int hostapd_check_edmg_capab(struct hostapd_iface *iface) |
735 | { | |
736 | struct hostapd_hw_modes *mode = iface->hw_features; | |
737 | struct ieee80211_edmg_config edmg; | |
738 | ||
739 | if (!iface->conf->enable_edmg) | |
740 | return 0; | |
741 | ||
742 | hostapd_encode_edmg_chan(iface->conf->enable_edmg, | |
743 | iface->conf->edmg_channel, | |
744 | iface->conf->channel, | |
745 | &edmg); | |
746 | ||
747 | if (mode->edmg.channels && ieee802_edmg_is_allowed(mode->edmg, edmg)) | |
748 | return 0; | |
749 | ||
750 | wpa_printf(MSG_WARNING, "Requested EDMG configuration is not valid"); | |
751 | wpa_printf(MSG_INFO, "EDMG capab: channels 0x%x, bw_config %d", | |
752 | mode->edmg.channels, mode->edmg.bw_config); | |
753 | wpa_printf(MSG_INFO, | |
754 | "Requested EDMG configuration: channels 0x%x, bw_config %d", | |
755 | edmg.channels, edmg.bw_config); | |
756 | return -1; | |
757 | } | |
758 | ||
759 | ||
245e026e | 760 | static int hostapd_is_usable_chan(struct hostapd_iface *iface, |
5f9b4afd | 761 | int frequency, int primary) |
245e026e | 762 | { |
245e026e MK |
763 | struct hostapd_channel_data *chan; |
764 | ||
0980c7fa JM |
765 | if (!iface->current_mode) |
766 | return 0; | |
767 | ||
5f9b4afd AB |
768 | chan = hw_get_channel_freq(iface->current_mode->mode, frequency, NULL, |
769 | iface->hw_features, iface->num_hw_features); | |
ce6d9ce1 DL |
770 | if (!chan) |
771 | return 0; | |
245e026e | 772 | |
ce6d9ce1 DL |
773 | if ((primary && chan_pri_allowed(chan)) || |
774 | (!primary && !(chan->flag & HOSTAPD_CHAN_DISABLED))) | |
775 | return 1; | |
245e026e | 776 | |
ce6d9ce1 | 777 | wpa_printf(MSG_INFO, |
5f9b4afd AB |
778 | "Frequency %d (%s) not allowed for AP mode, flags: 0x%x%s%s", |
779 | frequency, primary ? "primary" : "secondary", | |
ce6d9ce1 DL |
780 | chan->flag, |
781 | chan->flag & HOSTAPD_CHAN_NO_IR ? " NO-IR" : "", | |
782 | chan->flag & HOSTAPD_CHAN_RADAR ? " RADAR" : ""); | |
245e026e MK |
783 | return 0; |
784 | } | |
785 | ||
786 | ||
dc3457cc AAL |
787 | static int hostapd_is_usable_edmg(struct hostapd_iface *iface) |
788 | { | |
789 | int i, contiguous = 0; | |
790 | int num_of_enabled = 0; | |
791 | int max_contiguous = 0; | |
792 | struct ieee80211_edmg_config edmg; | |
5f9b4afd | 793 | struct hostapd_channel_data *pri_chan; |
dc3457cc AAL |
794 | |
795 | if (!iface->conf->enable_edmg) | |
796 | return 1; | |
797 | ||
5f9b4afd AB |
798 | if (!iface->current_mode) |
799 | return 0; | |
800 | pri_chan = hw_get_channel_freq(iface->current_mode->mode, | |
801 | iface->freq, NULL, | |
802 | iface->hw_features, | |
803 | iface->num_hw_features); | |
dc3457cc AAL |
804 | hostapd_encode_edmg_chan(iface->conf->enable_edmg, |
805 | iface->conf->edmg_channel, | |
5f9b4afd | 806 | pri_chan->chan, |
dc3457cc | 807 | &edmg); |
5f9b4afd | 808 | if (!(edmg.channels & BIT(pri_chan->chan - 1))) |
dc3457cc AAL |
809 | return 0; |
810 | ||
811 | /* 60 GHz channels 1..6 */ | |
812 | for (i = 0; i < 6; i++) { | |
5f9b4afd AB |
813 | int freq = 56160 + 2160 * i; |
814 | ||
dc3457cc AAL |
815 | if (edmg.channels & BIT(i)) { |
816 | contiguous++; | |
817 | num_of_enabled++; | |
818 | } else { | |
819 | contiguous = 0; | |
820 | continue; | |
821 | } | |
822 | ||
823 | /* P802.11ay defines that the total number of subfields | |
824 | * set to one does not exceed 4. | |
825 | */ | |
826 | if (num_of_enabled > 4) | |
827 | return 0; | |
828 | ||
5f9b4afd | 829 | if (!hostapd_is_usable_chan(iface, freq, 1)) |
dc3457cc AAL |
830 | return 0; |
831 | ||
832 | if (contiguous > max_contiguous) | |
833 | max_contiguous = contiguous; | |
834 | } | |
835 | ||
836 | /* Check if the EDMG configuration is valid under the limitations | |
837 | * of P802.11ay. | |
838 | */ | |
839 | /* check bw_config against contiguous EDMG channels */ | |
840 | switch (edmg.bw_config) { | |
841 | case EDMG_BW_CONFIG_4: | |
842 | if (!max_contiguous) | |
843 | return 0; | |
844 | break; | |
845 | case EDMG_BW_CONFIG_5: | |
846 | if (max_contiguous < 2) | |
847 | return 0; | |
848 | break; | |
849 | default: | |
850 | return 0; | |
851 | } | |
852 | ||
853 | return 1; | |
854 | } | |
855 | ||
856 | ||
245e026e MK |
857 | static int hostapd_is_usable_chans(struct hostapd_iface *iface) |
858 | { | |
5f9b4afd | 859 | int secondary_freq; |
ce6d9ce1 DL |
860 | struct hostapd_channel_data *pri_chan; |
861 | ||
5f9b4afd | 862 | if (!iface->current_mode) |
ce6d9ce1 | 863 | return 0; |
5f9b4afd AB |
864 | pri_chan = hw_get_channel_freq(iface->current_mode->mode, |
865 | iface->freq, NULL, | |
866 | iface->hw_features, | |
867 | iface->num_hw_features); | |
868 | if (!pri_chan) { | |
869 | wpa_printf(MSG_ERROR, "Primary frequency not present"); | |
245e026e | 870 | return 0; |
5f9b4afd AB |
871 | } |
872 | if (!hostapd_is_usable_chan(iface, pri_chan->freq, 1)) { | |
873 | wpa_printf(MSG_ERROR, "Primary frequency not allowed"); | |
874 | return 0; | |
875 | } | |
dc3457cc AAL |
876 | if (!hostapd_is_usable_edmg(iface)) |
877 | return 0; | |
878 | ||
245e026e MK |
879 | if (!iface->conf->secondary_channel) |
880 | return 1; | |
881 | ||
c4bab72d QC |
882 | if (hostapd_is_usable_chan(iface, iface->freq + |
883 | iface->conf->secondary_channel * 20, 0)) | |
884 | return 1; | |
ec27b04e | 885 | if (!iface->conf->ht40_plus_minus_allowed) |
c4bab72d | 886 | return 0; |
ec27b04e PX |
887 | |
888 | /* Both HT40+ and HT40- are set, pick a valid secondary channel */ | |
5f9b4afd AB |
889 | secondary_freq = iface->freq + 20; |
890 | if (hostapd_is_usable_chan(iface, secondary_freq, 0) && | |
ce6d9ce1 | 891 | (pri_chan->allowed_bw & HOSTAPD_CHAN_WIDTH_40P)) { |
ec27b04e PX |
892 | iface->conf->secondary_channel = 1; |
893 | return 1; | |
894 | } | |
895 | ||
5f9b4afd AB |
896 | secondary_freq = iface->freq - 20; |
897 | if (hostapd_is_usable_chan(iface, secondary_freq, 0) && | |
ce6d9ce1 | 898 | (pri_chan->allowed_bw & HOSTAPD_CHAN_WIDTH_40M)) { |
ec27b04e PX |
899 | iface->conf->secondary_channel = -1; |
900 | return 1; | |
901 | } | |
902 | ||
903 | return 0; | |
245e026e MK |
904 | } |
905 | ||
906 | ||
907 | static enum hostapd_chan_status | |
908 | hostapd_check_chans(struct hostapd_iface *iface) | |
909 | { | |
5f9b4afd | 910 | if (iface->freq) { |
245e026e MK |
911 | if (hostapd_is_usable_chans(iface)) |
912 | return HOSTAPD_CHAN_VALID; | |
913 | else | |
914 | return HOSTAPD_CHAN_INVALID; | |
915 | } | |
916 | ||
917 | /* | |
50f4f2a0 MK |
918 | * The user set channel=0 or channel=acs_survey |
919 | * which is used to trigger ACS. | |
245e026e | 920 | */ |
50f4f2a0 MK |
921 | |
922 | switch (acs_init(iface)) { | |
923 | case HOSTAPD_CHAN_ACS: | |
924 | return HOSTAPD_CHAN_ACS; | |
925 | case HOSTAPD_CHAN_VALID: | |
926 | case HOSTAPD_CHAN_INVALID: | |
927 | default: | |
928 | return HOSTAPD_CHAN_INVALID; | |
929 | } | |
245e026e MK |
930 | } |
931 | ||
932 | ||
933 | static void hostapd_notify_bad_chans(struct hostapd_iface *iface) | |
934 | { | |
0980c7fa JM |
935 | if (!iface->current_mode) { |
936 | hostapd_logger(iface->bss[0], NULL, HOSTAPD_MODULE_IEEE80211, | |
937 | HOSTAPD_LEVEL_WARNING, | |
938 | "Hardware does not support configured mode"); | |
939 | return; | |
940 | } | |
245e026e MK |
941 | hostapd_logger(iface->bss[0], NULL, |
942 | HOSTAPD_MODULE_IEEE80211, | |
943 | HOSTAPD_LEVEL_WARNING, | |
5f9b4afd | 944 | "Configured channel (%d) or frequency (%d) not found from the channel list of the current mode (%d) %s", |
245e026e | 945 | iface->conf->channel, |
5f9b4afd | 946 | iface->freq, |
245e026e MK |
947 | iface->current_mode->mode, |
948 | hostapd_hw_mode_txt(iface->current_mode->mode)); | |
949 | hostapd_logger(iface->bss[0], NULL, HOSTAPD_MODULE_IEEE80211, | |
950 | HOSTAPD_LEVEL_WARNING, | |
951 | "Hardware does not support configured channel"); | |
952 | } | |
953 | ||
954 | ||
3645fd5a | 955 | int hostapd_acs_completed(struct hostapd_iface *iface, int err) |
50f4f2a0 | 956 | { |
0e1d0b37 | 957 | int ret = -1; |
50f4f2a0 | 958 | |
3645fd5a HS |
959 | if (err) |
960 | goto out; | |
961 | ||
50f4f2a0 MK |
962 | switch (hostapd_check_chans(iface)) { |
963 | case HOSTAPD_CHAN_VALID: | |
ae134e1d JM |
964 | wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, |
965 | ACS_EVENT_COMPLETED "freq=%d channel=%d", | |
bb781c76 | 966 | iface->freq, iface->conf->channel); |
50f4f2a0 MK |
967 | break; |
968 | case HOSTAPD_CHAN_ACS: | |
969 | wpa_printf(MSG_ERROR, "ACS error - reported complete, but no result available"); | |
ae134e1d | 970 | wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, ACS_EVENT_FAILED); |
50f4f2a0 | 971 | hostapd_notify_bad_chans(iface); |
0e1d0b37 | 972 | goto out; |
50f4f2a0 MK |
973 | case HOSTAPD_CHAN_INVALID: |
974 | default: | |
975 | wpa_printf(MSG_ERROR, "ACS picked unusable channels"); | |
ae134e1d | 976 | wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, ACS_EVENT_FAILED); |
50f4f2a0 | 977 | hostapd_notify_bad_chans(iface); |
0e1d0b37 | 978 | goto out; |
50f4f2a0 MK |
979 | } |
980 | ||
981 | ret = hostapd_check_ht_capab(iface); | |
982 | if (ret < 0) | |
0e1d0b37 | 983 | goto out; |
50f4f2a0 MK |
984 | if (ret == 1) { |
985 | wpa_printf(MSG_DEBUG, "Interface initialization will be completed in a callback"); | |
986 | return 0; | |
987 | } | |
988 | ||
0e1d0b37 HS |
989 | ret = 0; |
990 | out: | |
991 | return hostapd_setup_interface_complete(iface, ret); | |
50f4f2a0 MK |
992 | } |
993 | ||
994 | ||
6fc6879b | 995 | /** |
ddaa83eb | 996 | * hostapd_select_hw_mode - Select the hardware mode |
6fc6879b | 997 | * @iface: Pointer to interface data. |
60eda5e4 | 998 | * Returns: 0 on success, < 0 on failure |
6fc6879b | 999 | * |
ddaa83eb JM |
1000 | * Sets up the hardware mode, channel, rates, and passive scanning |
1001 | * based on the configuration. | |
6fc6879b | 1002 | */ |
ddaa83eb | 1003 | int hostapd_select_hw_mode(struct hostapd_iface *iface) |
6fc6879b | 1004 | { |
245e026e | 1005 | int i; |
6fc6879b JM |
1006 | |
1007 | if (iface->num_hw_features < 1) | |
1008 | return -1; | |
1009 | ||
c1151e47 | 1010 | if ((iface->conf->hw_mode == HOSTAPD_MODE_IEEE80211G || |
8b18d2b2 JC |
1011 | iface->conf->ieee80211n || iface->conf->ieee80211ac || |
1012 | iface->conf->ieee80211ax) && | |
c1151e47 | 1013 | iface->conf->channel == 14) { |
8b18d2b2 | 1014 | wpa_printf(MSG_INFO, "Disable OFDM/HT/VHT/HE on channel 14"); |
c1151e47 JM |
1015 | iface->conf->hw_mode = HOSTAPD_MODE_IEEE80211B; |
1016 | iface->conf->ieee80211n = 0; | |
1017 | iface->conf->ieee80211ac = 0; | |
8b18d2b2 | 1018 | iface->conf->ieee80211ax = 0; |
c1151e47 JM |
1019 | } |
1020 | ||
6fc6879b JM |
1021 | iface->current_mode = NULL; |
1022 | for (i = 0; i < iface->num_hw_features; i++) { | |
1023 | struct hostapd_hw_modes *mode = &iface->hw_features[i]; | |
6caf9ca6 | 1024 | if (mode->mode == iface->conf->hw_mode) { |
bb781c76 AB |
1025 | if (iface->freq > 0 && |
1026 | !hw_get_chan(mode->mode, iface->freq, | |
1027 | iface->hw_features, | |
1028 | iface->num_hw_features)) | |
a5b2faa7 | 1029 | continue; |
6fc6879b JM |
1030 | iface->current_mode = mode; |
1031 | break; | |
1032 | } | |
1033 | } | |
1034 | ||
1035 | if (iface->current_mode == NULL) { | |
3784c058 PX |
1036 | if (!(iface->drv_flags & WPA_DRIVER_FLAGS_ACS_OFFLOAD) || |
1037 | !(iface->drv_flags & WPA_DRIVER_FLAGS_SUPPORT_HW_MODE_ANY)) | |
1038 | { | |
1039 | wpa_printf(MSG_ERROR, | |
1040 | "Hardware does not support configured mode"); | |
1041 | hostapd_logger(iface->bss[0], NULL, | |
1042 | HOSTAPD_MODULE_IEEE80211, | |
1043 | HOSTAPD_LEVEL_WARNING, | |
1044 | "Hardware does not support configured mode (%d) (hw_mode in hostapd.conf)", | |
1045 | (int) iface->conf->hw_mode); | |
1046 | return -2; | |
1047 | } | |
6fc6879b JM |
1048 | } |
1049 | ||
245e026e MK |
1050 | switch (hostapd_check_chans(iface)) { |
1051 | case HOSTAPD_CHAN_VALID: | |
1052 | return 0; | |
50f4f2a0 MK |
1053 | case HOSTAPD_CHAN_ACS: /* ACS will run and later complete */ |
1054 | return 1; | |
245e026e MK |
1055 | case HOSTAPD_CHAN_INVALID: |
1056 | default: | |
1057 | hostapd_notify_bad_chans(iface); | |
60eda5e4 | 1058 | return -3; |
24c9fceb | 1059 | } |
6fc6879b JM |
1060 | } |
1061 | ||
1062 | ||
1063 | const char * hostapd_hw_mode_txt(int mode) | |
1064 | { | |
1065 | switch (mode) { | |
1066 | case HOSTAPD_MODE_IEEE80211A: | |
1067 | return "IEEE 802.11a"; | |
1068 | case HOSTAPD_MODE_IEEE80211B: | |
1069 | return "IEEE 802.11b"; | |
1070 | case HOSTAPD_MODE_IEEE80211G: | |
1071 | return "IEEE 802.11g"; | |
7829894c VK |
1072 | case HOSTAPD_MODE_IEEE80211AD: |
1073 | return "IEEE 802.11ad"; | |
6fc6879b JM |
1074 | default: |
1075 | return "UNKNOWN"; | |
1076 | } | |
1077 | } | |
1078 | ||
1079 | ||
1080 | int hostapd_hw_get_freq(struct hostapd_data *hapd, int chan) | |
1081 | { | |
5f10b7f4 | 1082 | return hw_get_freq(hapd->iface->current_mode, chan); |
6fc6879b JM |
1083 | } |
1084 | ||
1085 | ||
1086 | int hostapd_hw_get_channel(struct hostapd_data *hapd, int freq) | |
1087 | { | |
5b9f46df PX |
1088 | int i, channel; |
1089 | struct hostapd_hw_modes *mode; | |
1090 | ||
eb314e8a | 1091 | if (hapd->iface->current_mode) { |
840532ae AB |
1092 | channel = hw_get_chan(hapd->iface->current_mode->mode, freq, |
1093 | hapd->iface->hw_features, | |
1094 | hapd->iface->num_hw_features); | |
eb314e8a JM |
1095 | if (channel) |
1096 | return channel; | |
1097 | } | |
1098 | ||
5b9f46df PX |
1099 | /* Check other available modes since the channel list for the current |
1100 | * mode did not include the specified frequency. */ | |
eb314e8a JM |
1101 | if (!hapd->iface->hw_features) |
1102 | return 0; | |
5b9f46df PX |
1103 | for (i = 0; i < hapd->iface->num_hw_features; i++) { |
1104 | mode = &hapd->iface->hw_features[i]; | |
840532ae AB |
1105 | channel = hw_get_chan(mode->mode, freq, |
1106 | hapd->iface->hw_features, | |
1107 | hapd->iface->num_hw_features); | |
5b9f46df PX |
1108 | if (channel) |
1109 | return channel; | |
1110 | } | |
1111 | return 0; | |
6fc6879b | 1112 | } |