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ap: Fix invalid HT40 channel pair fallback

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In case of incorrect HT40 configuration as part of an attempt to create
a 80 MHz AP, iface->conf->vht_oper_centr_freq_seg0_idx and
iface->conf->vht_oper_centr_freq_seg1_idx are zero'ed, but
iface->conf->vht_oper_chwidth remains VHT_CHANWIDTH_80MHZ. This causes
the logic in dfs_get_start_chan_idx to fail.

Fix this by setting iface->conf->vht_oper_chwidth to
VHT_CHANWIDTH_USE_HT when zero'ing the center frequency parameters.

Signed-off-by: Naftali Goldstein <naftali.goldstein@intel.com>
This commit is contained in:
Naftali Goldstein 2017-06-08 11:17:55 +03:00 committed by Jouni Malinen
parent 6d3e24d3e3
commit 3f8e3a5486
1 changed files with 1 additions and 0 deletions
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src/ap/hw_features.c
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@ -334,6 +334,7 @@ static void ieee80211n_check_scan(struct hostapd_iface *iface)
iface->conf->secondary_channel = 0;
iface->conf->vht_oper_centr_freq_seg0_idx = 0;
iface->conf->vht_oper_centr_freq_seg1_idx = 0;
iface->conf->vht_oper_chwidth = VHT_CHANWIDTH_USE_HT;
res = 1;
wpa_printf(MSG_INFO, "Fallback to 20 MHz");
}