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EHT: Validate puncturing bitmap

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Validate preamble puncturing bitmap.

Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
This commit is contained in:
Aloka Dixit 2023-03-13 21:59:16 -07:00 • committed by Jouni Malinen
parent 9102fda31f
commit 7618269ec6
3 changed files with 120 additions and 0 deletions
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52
src/ap/hw_features.c
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@ -893,6 +893,55 @@ static int hostapd_is_usable_edmg(struct hostapd_iface *iface)
}
static bool hostapd_is_usable_punct_bitmap(struct hostapd_iface *iface)
{
#ifdef CONFIG_IEEE80211BE
struct hostapd_config *conf = iface->conf;
u8 bw, start_chan;
if (!conf->punct_bitmap)
return true;
if (!conf->ieee80211be) {
wpa_printf(MSG_ERROR,
"Currently RU puncturing is supported only if ieee80211be is enabled");
return false;
}
if (iface->freq >= 2412 && iface->freq <= 2484) {
wpa_printf(MSG_ERROR,
"RU puncturing not supported in 2.4 GHz");
return false;
}
switch (conf->eht_oper_chwidth) {
case 0:
wpa_printf(MSG_ERROR,
"RU puncturing is supported only in 80 MHz and 160 MHz");
return false;
case 1:
bw = 80;
start_chan = conf->eht_oper_centr_freq_seg0_idx - 6;
break;
case 2:
bw = 160;
start_chan = conf->eht_oper_centr_freq_seg0_idx - 14;
break;
default:
return false;
}
if (!is_punct_bitmap_valid(bw, (conf->channel - start_chan) / 4,
conf->punct_bitmap)) {
wpa_printf(MSG_ERROR, "Invalid puncturing bitmap");
return false;
}
#endif /* CONFIG_IEEE80211BE */
return true;
}
static int hostapd_is_usable_chans(struct hostapd_iface *iface)
{
int secondary_freq;
@ -915,6 +964,9 @@ static int hostapd_is_usable_chans(struct hostapd_iface *iface)
if (!hostapd_is_usable_edmg(iface))
return 0;
if (!hostapd_is_usable_punct_bitmap(iface))
return 0;
if (!iface->conf->secondary_channel)
return 1;