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ibss/mesh: Enable HT40 if supported

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Setup HT40+/HT40- if supported by driver.

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
This commit is contained in:
Janusz Dziedzic 2015-01-08 12:48:36 +01:00 committed by Jouni Malinen
parent a828f626af
commit 6b8b07741a
1 changed files with 102 additions and 1 deletions
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103
wpa_supplicant/wpa_supplicant.c
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@ -33,6 +33,7 @@
#include "rsn_supp/pmksa_cache.h"
#include "common/wpa_ctrl.h"
#include "common/ieee802_11_defs.h"
#include "common/hw_features_common.h"
#include "p2p/p2p.h"
#include "blacklist.h"
#include "wpas_glue.h"
@ -1655,8 +1656,12 @@ static void ibss_mesh_setup_freq(struct wpa_supplicant *wpa_s,
{
enum hostapd_hw_mode hw_mode;
struct hostapd_hw_modes *mode = NULL;
int ht40plus[] = { 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157,
184, 192 };
struct hostapd_channel_data *pri_chan = NULL, *sec_chan = NULL;
u8 channel;
int i;
int i, chan_idx, ht40 = -1, res;
unsigned int j;
freq->freq = ssid->frequency;
@ -1677,6 +1682,102 @@ static void ibss_mesh_setup_freq(struct wpa_supplicant *wpa_s,
return;
freq->ht_enabled = ht_supported(mode);
if (!freq->ht_enabled)
return;
/* Setup higher BW only for 5 GHz */
if (mode->mode != HOSTAPD_MODE_IEEE80211A)
return;
for (chan_idx = 0; chan_idx < mode->num_channels; chan_idx++) {
pri_chan = &mode->channels[chan_idx];
if (pri_chan->chan == channel)
break;
pri_chan = NULL;
}
if (!pri_chan)
return;
/* Check primary channel flags */
if (pri_chan->flag & (HOSTAPD_CHAN_DISABLED | HOSTAPD_CHAN_NO_IR))
return;
/* Check/setup HT40+/HT40- */
for (j = 0; j < ARRAY_SIZE(ht40plus); j++) {
if (ht40plus[j] == channel) {
ht40 = 1;
break;
}
}
/* Find secondary channel */
for (i = 0; i < mode->num_channels; i++) {
sec_chan = &mode->channels[i];
if (sec_chan->chan == channel + ht40 * 4)
break;
sec_chan = NULL;
}
if (!sec_chan)
return;
/* Check secondary channel flags */
if (sec_chan->flag & (HOSTAPD_CHAN_DISABLED | HOSTAPD_CHAN_NO_IR))
return;
freq->channel = pri_chan->chan;
switch (ht40) {
case -1:
if (!(pri_chan->flag & HOSTAPD_CHAN_HT40MINUS))
return;
freq->sec_channel_offset = -1;
break;
case 1:
if (!(pri_chan->flag & HOSTAPD_CHAN_HT40PLUS))
return;
freq->sec_channel_offset = 1;
break;
default:
break;
}
if (freq->sec_channel_offset) {
struct wpa_scan_results *scan_res;
scan_res = wpa_supplicant_get_scan_results(wpa_s, NULL, 0);
if (scan_res == NULL) {
/* Back to HT20 */
freq->sec_channel_offset = 0;
return;
}
res = check_40mhz_5g(mode, scan_res, pri_chan->chan,
sec_chan->chan);
switch (res) {
case 0:
/* Back to HT20 */
freq->sec_channel_offset = 0;
break;
case 1:
/* Configuration allowed */
break;
case 2:
/* Switch pri/sec channels */
freq->freq = hw_get_freq(mode, sec_chan->chan);
freq->sec_channel_offset = -freq->sec_channel_offset;
freq->channel = sec_chan->chan;
break;
default:
freq->sec_channel_offset = 0;
break;
}
wpa_scan_results_free(scan_res);
}
wpa_printf(MSG_DEBUG,
"IBSS/mesh: setup freq channel %d, sec_channel_offset %d",
freq->channel, freq->sec_channel_offset);
}