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hostapd: Check usability of EDMG channel

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Signed-off-by: Alexei Avshalom Lazar <ailizaro@codeaurora.org>
This commit is contained in:
Alexei Avshalom Lazar 2019-09-11 12:03:07 +03:00 committed by Jouni Malinen
parent bebd91e9c4
commit dc3457cc4a
1 changed files with 64 additions and 0 deletions
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64
src/ap/hw_features.c
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@ -730,6 +730,67 @@ static int hostapd_is_usable_chan(struct hostapd_iface *iface,
} }
static int hostapd_is_usable_edmg(struct hostapd_iface *iface)
{
int i, contiguous = 0;
int num_of_enabled = 0;
int max_contiguous = 0;
struct ieee80211_edmg_config edmg;
if (!iface->conf->enable_edmg)
return 1;
hostapd_encode_edmg_chan(iface->conf->enable_edmg,
iface->conf->edmg_channel,
iface->conf->channel,
&edmg);
if (!(edmg.channels & BIT(iface->conf->channel - 1)))
return 0;
/* 60 GHz channels 1..6 */
for (i = 0; i < 6; i++) {
if (edmg.channels & BIT(i)) {
contiguous++;
num_of_enabled++;
} else {
contiguous = 0;
continue;
}
/* P802.11ay defines that the total number of subfields
* set to one does not exceed 4.
*/
if (num_of_enabled > 4)
return 0;
if (!hostapd_is_usable_chan(iface, i + 1, 1))
return 0;
if (contiguous > max_contiguous)
max_contiguous = contiguous;
}
/* Check if the EDMG configuration is valid under the limitations
* of P802.11ay.
*/
/* check bw_config against contiguous EDMG channels */
switch (edmg.bw_config) {
case EDMG_BW_CONFIG_4:
if (!max_contiguous)
return 0;
break;
case EDMG_BW_CONFIG_5:
if (max_contiguous < 2)
return 0;
break;
default:
return 0;
}
return 1;
}
static int hostapd_is_usable_chans(struct hostapd_iface *iface) static int hostapd_is_usable_chans(struct hostapd_iface *iface)
{ {
int secondary_chan; int secondary_chan;
@ -743,6 +804,9 @@ static int hostapd_is_usable_chans(struct hostapd_iface *iface)
if (!hostapd_is_usable_chan(iface, iface->conf->channel, 1)) if (!hostapd_is_usable_chan(iface, iface->conf->channel, 1))
return 0; return 0;
if (!hostapd_is_usable_edmg(iface))
return 0;
if (!iface->conf->secondary_channel) if (!iface->conf->secondary_channel)
return 1; return 1;