> On Mon, Apr 11, 2022 at 05:21:59PM +0300, Ilan Peer wrote: > > This configuration option can be used to disable 6GHz collocated scan > > logic which would result with passively scanning 6GHz non PSC channels. > > Is this really something we should do as a configuration option? Is the > default behavior to scan only the 6 GHz channels that are either PSC or > that have been determined to have a BSS based on neighbor report? And is > that somehow conditional on active vs. passive scanning? > > I could understand having a need for a specific SCAN command that will > scan all 6 GHz channels passively, but it would seem more reasonable to > do that with a SCAN control interface command argument instead of a > configuration parameter that applies to all scan operations. Isn't it > way too slow to scan all non-PSC channels on the 6 GHz using a passive > scan for normal use? > It seems s 6 GHz passive scan would only need to be done if the desired SSID was not found from a 2.4/5 GHz collocated AP (i.e. the scenario with a 6 GHz-only AP on a non-PSC channel). In other words, perform active scanning on the 2.4/5 GHz bands as usual, and if the SSID is not found directly or via an RNR element, then perform active scanning on the 6 GHz PSC channels if the regulatory domain allows it. If the SSID is still not found, then perform a passive scan of the remaining 6 GHz channels. In the case of a 6 GHz AP with no 2.4/5 GHz neighbors to allow the STA to obtain regulatory domain info, it seems reasonable to assume the STA can passively scan the 6 GHz band (i.e. temporarily override the world regulatory domain) without violating country-specific rules. However, the WLAN driver/firmware might be the limiting factor there - the 6 GHz channels may not be enabled at all by the driver until it sees a beacon hint in the 2.4/5 GHz band. That should probably be addressed at the driver level sooner than later. > -- > Jouni Malinen PGP id EFC895FA > _______________________________________________ Hostap mailing list Hostap@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/hostap
