hostapd terminates with WPA HT/VHT configuration

[Ann Lo]

Jouni,

Thanks very much for your information. We have double-checked our
configuration files and have found that in the case of wpa=1, our
script generates a configuration file that does not provide ht_capab
and vht_capab:

channel=161
vht_oper_centr_freq_seg0_idx=155
vht_oper_chwidth=1
ht_capab=
vht_capab=

In the case of wpa=2, we do have:
ht_capab=[HT40-][LDPC][SHORT-GI-20][SHORT-GI-40][TX-STBC][RX-STBC1]
vht_capab=[MAX-MPDU-11454][RXLDPC][MAX-A-MPDU-LEN-EXP3][SHORT-GI-80][TX-STBC-2BY1][RX-STBC-1]

After we have fixed the configuration file for WPA1, hostapd works fine.

Thanks,
Ann

On Tue, Feb 6, 2018 at 12:45 AM, Jouni Malinen <j at w1.fi> wrote:
> On Mon, Feb 05, 2018 at 04:04:31PM -0800, Ann Lo wrote:
>> When we configure hostapd v2.6 with 802.11ac, 802.11n using channel
>> 161, 20 MHz, and WPA AES security, hostapd v2.6 is able to come up
>> fine.
>>
>> If we increase channel width to 40 MHz or 80MHz, hostapd terminates
>> with the log:
>> "Could not set channel for kernel driver".
>>
>> Would you advise how hostapd deals with such configurations? If WPA is
>> not supposed to be used for 802.11ac and 802.11n, why is channel width
>> 20 MHz OK?
>>
>> If we use the same configurations except that WPA (wpa=1) is replaced
>> by WPA2 (wpa=2), then all configurations work fine.
>
> There should be no difference to channel configuration between wpa=1 and
> wpa=2. Could you please post the two configuration files you used and
> hostapd debug log (-dd on command line) from these working (wpa=1) and
> not-working (wpa=2) cases?
>
> --
> Jouni Malinen                                            PGP id EFC895FA