On 05/12/2018 11:23, Arnout Vandecappelle (Essensium/Mind) wrote:
> + if (hapd->conf->multi_ap & FRONTHAUL_BSS) {
> + if (multi_ap_value == MULTI_AP_BACKHAUL_STA) {
> + hostapd_logger(hapd, sta->addr,
> + HOSTAPD_MODULE_IEEE80211,
> + HOSTAPD_LEVEL_INFO,
> + "Backhaul STA tries to associate with fronthaul-only BSS");
> + return WLAN_STATUS_ASSOC_DENIED_UNSPEC;
> + }
Turns out that this bit was a mistake. It breaks WPS. In Multi-AP, WPS is done
on the fronthaul BSS. The backhaul STA will associate with the fronthaul BSS and
provide the Multi-AP IE. This will cause the fronthaul BSS to provide
credentials for the backhaul BSS instead of for itself.
So, if the fronthaul BSS is fronthaul-only, it may indeed get an association
request with a backhaul STA Multi-AP IE...
Since the specification doesn't say explicitly that a bSTA trying to associate
on a fronthaul-only BSS should be rejected, I think the easiest is to remove
this check again.
I'll do that as part of my refresh of patches 10-12.
Regards,
Arnout
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