ibss/mesh: Enable HT40 if supported
Setup HT40+/HT40- if supported by driver. Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
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1 changed files with 102 additions and 1 deletions
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@ -33,6 +33,7 @@
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#include "rsn_supp/pmksa_cache.h"
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#include "common/wpa_ctrl.h"
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#include "common/ieee802_11_defs.h"
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#include "common/hw_features_common.h"
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#include "p2p/p2p.h"
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#include "blacklist.h"
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#include "wpas_glue.h"
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@ -1655,8 +1656,12 @@ static void ibss_mesh_setup_freq(struct wpa_supplicant *wpa_s,
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{
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enum hostapd_hw_mode hw_mode;
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struct hostapd_hw_modes *mode = NULL;
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int ht40plus[] = { 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157,
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184, 192 };
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struct hostapd_channel_data *pri_chan = NULL, *sec_chan = NULL;
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u8 channel;
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int i;
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int i, chan_idx, ht40 = -1, res;
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unsigned int j;
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freq->freq = ssid->frequency;
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@ -1677,6 +1682,102 @@ static void ibss_mesh_setup_freq(struct wpa_supplicant *wpa_s,
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return;
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freq->ht_enabled = ht_supported(mode);
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if (!freq->ht_enabled)
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return;
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/* Setup higher BW only for 5 GHz */
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if (mode->mode != HOSTAPD_MODE_IEEE80211A)
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return;
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for (chan_idx = 0; chan_idx < mode->num_channels; chan_idx++) {
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pri_chan = &mode->channels[chan_idx];
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if (pri_chan->chan == channel)
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break;
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pri_chan = NULL;
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}
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if (!pri_chan)
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return;
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/* Check primary channel flags */
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if (pri_chan->flag & (HOSTAPD_CHAN_DISABLED | HOSTAPD_CHAN_NO_IR))
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return;
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/* Check/setup HT40+/HT40- */
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for (j = 0; j < ARRAY_SIZE(ht40plus); j++) {
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if (ht40plus[j] == channel) {
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ht40 = 1;
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break;
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}
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}
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/* Find secondary channel */
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for (i = 0; i < mode->num_channels; i++) {
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sec_chan = &mode->channels[i];
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if (sec_chan->chan == channel + ht40 * 4)
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break;
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sec_chan = NULL;
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}
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if (!sec_chan)
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return;
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/* Check secondary channel flags */
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if (sec_chan->flag & (HOSTAPD_CHAN_DISABLED | HOSTAPD_CHAN_NO_IR))
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return;
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freq->channel = pri_chan->chan;
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switch (ht40) {
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case -1:
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if (!(pri_chan->flag & HOSTAPD_CHAN_HT40MINUS))
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return;
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freq->sec_channel_offset = -1;
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break;
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case 1:
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if (!(pri_chan->flag & HOSTAPD_CHAN_HT40PLUS))
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return;
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freq->sec_channel_offset = 1;
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break;
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default:
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break;
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}
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if (freq->sec_channel_offset) {
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struct wpa_scan_results *scan_res;
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scan_res = wpa_supplicant_get_scan_results(wpa_s, NULL, 0);
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if (scan_res == NULL) {
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/* Back to HT20 */
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freq->sec_channel_offset = 0;
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return;
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}
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res = check_40mhz_5g(mode, scan_res, pri_chan->chan,
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sec_chan->chan);
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switch (res) {
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case 0:
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/* Back to HT20 */
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freq->sec_channel_offset = 0;
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break;
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case 1:
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/* Configuration allowed */
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break;
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case 2:
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/* Switch pri/sec channels */
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freq->freq = hw_get_freq(mode, sec_chan->chan);
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freq->sec_channel_offset = -freq->sec_channel_offset;
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freq->channel = sec_chan->chan;
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break;
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default:
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freq->sec_channel_offset = 0;
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break;
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}
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wpa_scan_results_free(scan_res);
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}
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wpa_printf(MSG_DEBUG,
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"IBSS/mesh: setup freq channel %d, sec_channel_offset %d",
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freq->channel, freq->sec_channel_offset);
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}
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