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Make get_pri_sec_chan() common

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Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
This commit is contained in:
Janusz Dziedzic 2015-01-08 12:48:32 +01:00 committed by Jouni Malinen
parent 514427437a
commit 6d5d098f77
3 changed files with 28 additions and 19 deletions
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20
src/ap/hw_features.c
View file

@ -252,25 +252,7 @@ static void ieee80211n_switch_pri_sec(struct hostapd_iface *iface)
static void ieee80211n_get_pri_sec_chan(struct wpa_scan_res *bss, static void ieee80211n_get_pri_sec_chan(struct wpa_scan_res *bss,
int *pri_chan, int *sec_chan) int *pri_chan, int *sec_chan)
{ {
struct ieee80211_ht_operation *oper; return get_pri_sec_chan(bss, pri_chan, sec_chan);
struct ieee802_11_elems elems;
*pri_chan = *sec_chan = 0;
ieee802_11_parse_elems((u8 *) (bss + 1), bss->ie_len, &elems, 0);
if (elems.ht_operation &&
elems.ht_operation_len >= sizeof(*oper)) {
oper = (struct ieee80211_ht_operation *) elems.ht_operation;
*pri_chan = oper->primary_chan;
if (oper->ht_param & HT_INFO_HT_PARAM_STA_CHNL_WIDTH) {
int sec = oper->ht_param &
HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
if (sec == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
*sec_chan = *pri_chan + 4;
else if (sec == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
*sec_chan = *pri_chan - 4;
}
}
} }

26
src/common/hw_features_common.c
View file

@ -11,6 +11,8 @@
#include "common.h" #include "common.h"
#include "defs.h" #include "defs.h"
#include "ieee802_11_defs.h"
#include "ieee802_11_common.h"
#include "hw_features_common.h" #include "hw_features_common.h"
@ -140,3 +142,27 @@ int allowed_ht40_channel_pair(struct hostapd_hw_modes *mode, int pri_chan,
return 1; return 1;
} }
void get_pri_sec_chan(struct wpa_scan_res *bss, int *pri_chan, int *sec_chan)
{
struct ieee80211_ht_operation *oper;
struct ieee802_11_elems elems;
*pri_chan = *sec_chan = 0;
ieee802_11_parse_elems((u8 *) (bss + 1), bss->ie_len, &elems, 0);
if (elems.ht_operation &&
elems.ht_operation_len >= sizeof(*oper)) {
oper = (struct ieee80211_ht_operation *) elems.ht_operation;
*pri_chan = oper->primary_chan;
if (oper->ht_param & HT_INFO_HT_PARAM_STA_CHNL_WIDTH) {
int sec = oper->ht_param &
HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
if (sec == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
*sec_chan = *pri_chan + 4;
else if (sec == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
*sec_chan = *pri_chan - 4;
}
}
}

1
src/common/hw_features_common.h
View file

@ -22,5 +22,6 @@ int hw_get_chan(struct hostapd_hw_modes *mode, int freq);
int allowed_ht40_channel_pair(struct hostapd_hw_modes *mode, int pri_chan, int allowed_ht40_channel_pair(struct hostapd_hw_modes *mode, int pri_chan,
int sec_chan); int sec_chan);
void get_pri_sec_chan(struct wpa_scan_res *bss, int *pri_chan, int *sec_chan);
#endif /* HW_FEATURES_COMMON_H */ #endif /* HW_FEATURES_COMMON_H */