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Make check_20mhz_bss common

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Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
This commit is contained in:
Janusz Dziedzic 2015-01-08 12:48:34 +01:00 committed by Jouni Malinen
parent 0e550fe496
commit fdd989d17a
3 changed files with 31 additions and 24 deletions
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25
src/ap/hw_features.c
View file

@ -277,30 +277,7 @@ static int ieee80211n_check_40mhz_5g(struct hostapd_iface *iface,
static int ieee80211n_check_20mhz_bss(struct wpa_scan_res *bss, int pri_freq, static int ieee80211n_check_20mhz_bss(struct wpa_scan_res *bss, int pri_freq,
int start, int end) int start, int end)
{ {
struct ieee802_11_elems elems; return check_20mhz_bss(bss, pri_freq, start, end);
struct ieee80211_ht_operation *oper;
if (bss->freq < start || bss->freq > end || bss->freq == pri_freq)
return 0;
ieee802_11_parse_elems((u8 *) (bss + 1), bss->ie_len, &elems, 0);
if (!elems.ht_capabilities) {
wpa_printf(MSG_DEBUG, "Found overlapping legacy BSS: "
MACSTR " freq=%d", MAC2STR(bss->bssid), bss->freq);
return 1;
}
if (elems.ht_operation &&
elems.ht_operation_len >= sizeof(*oper)) {
oper = (struct ieee80211_ht_operation *) elems.ht_operation;
if (oper->ht_param & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK)
return 0;
wpa_printf(MSG_DEBUG, "Found overlapping 20 MHz HT BSS: "
MACSTR " freq=%d", MAC2STR(bss->bssid), bss->freq);
return 1;
}
return 0;
} }

29
src/common/hw_features_common.c
View file

@ -236,3 +236,32 @@ int check_40mhz_5g(struct hostapd_hw_modes *mode,
return 1; return 1;
} }
int check_20mhz_bss(struct wpa_scan_res *bss, int pri_freq, int start, int end)
{
struct ieee802_11_elems elems;
struct ieee80211_ht_operation *oper;
if (bss->freq < start || bss->freq > end || bss->freq == pri_freq)
return 0;
ieee802_11_parse_elems((u8 *) (bss + 1), bss->ie_len, &elems, 0);
if (!elems.ht_capabilities) {
wpa_printf(MSG_DEBUG, "Found overlapping legacy BSS: "
MACSTR " freq=%d", MAC2STR(bss->bssid), bss->freq);
return 1;
}
if (elems.ht_operation &&
elems.ht_operation_len >= sizeof(*oper)) {
oper = (struct ieee80211_ht_operation *) elems.ht_operation;
if (oper->ht_param & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK)
return 0;
wpa_printf(MSG_DEBUG, "Found overlapping 20 MHz HT BSS: "
MACSTR " freq=%d", MAC2STR(bss->bssid), bss->freq);
return 1;
}
return 0;
}

1
src/common/hw_features_common.h
View file

@ -26,5 +26,6 @@ void get_pri_sec_chan(struct wpa_scan_res *bss, int *pri_chan, int *sec_chan);
int check_40mhz_5g(struct hostapd_hw_modes *mode, int check_40mhz_5g(struct hostapd_hw_modes *mode,
struct wpa_scan_results *scan_res, int pri_chan, struct wpa_scan_results *scan_res, int pri_chan,
int sec_chan); int sec_chan);
int check_20mhz_bss(struct wpa_scan_res *bss, int pri_freq, int start, int end);
#endif /* HW_FEATURES_COMMON_H */ #endif /* HW_FEATURES_COMMON_H */