Could I get some information about support of 802.11k/r/v standards is wpa_supplicant? * What part of 802.11k/r/v standards are implemented and since which revision of wpa_supplicant? [Dennis] Most of 802.11k/r/v was implemented in wpa_supplicant 2.6, but many important bugfixes have been added since then. For example, you would want to use 802.11r with the WPA KRACK patch implemented in 2018. * What is wpa_supplicant responsible for and what part of those standards supplicant expects that nl80211/cfg80211 driver is responsible for? [Dennis] This is dependent on the driver implementation. It is possible for wpa_supplicant to take care of 802.11r roaming (scanning, roaming, and key management) if supported by the STA chipset driver/firmware. wpa_supplicant can also respond to 802.11k/v requests by the AP, if the STA driver allows it. * Is 802.11r typically implemented in wpa supplicant or in driver level? [Dennis] 802.11r key management is usually done in middleware (e.g. wpa_supplicant), but scanning/roaming may be done by the driver or wpa_supplicant - depending on the driver implementation. * Does supplicant takes into account 802.11r NeighborReport response and/or 802.11v Load Balancing message from AP during roaming? [Dennis] wpa_supplicant does not act on Neighbor Report results to reduce scan time - this additional functionality is implemented by the OEM. wpa_supplicant may act on an 802.11v BSS Transition Management request, but it depends on a variety of factors, such as current RSSI and if Disassociation Imminent was set. * May I ask your your opinion what advantage of those standards are for not-mobile station i.e STB? [Dennis] Load balancing is useful for fixed stations within range of multiple APs. Using 802.11k, the AP controller identifies a load-balancing optimization. Then, using 802.11v BTM, the AP can request STAs (especially sticky STAs) to move from an overloaded AP to a better AP. The STA can then use 802.11r to seamlessly move to the requested AP channel without disrupting any time-sensitive streaming applications. _______________________________________________ Hostap mailing list Hostap@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/hostap
