• Johannes Berg's avatar
    mac80211: allow VHT with peers not capable of 40MHz · 4a817aa7
    Johannes Berg authored
    There are two (related) issues with this.
    One case, reported by Michal, is related to hostap: it unsets the
    20/40 capability bit for stations that associate when it's in 20
    MHz mode.
    The other case, reported by Eyal, is that some APs like Netgear
    R6300v2 and probably others based on the BCM4360 chipset can be
    configured for doing VHT at 20Mhz. In this case the beacon has
    a VHT IE but the HT cap indicates transmitter only support 20Mhz.
    In both of these cases, we currently avoid VHT and use only HT
    this means we can't use the highest rates (MCS8), so fixing this
    leads to throughput improvements.
    Reported-by: default avatarMichal Kazior <michal.kazior@tieto.com>
    Reported-by: default avatarEyal Shapira <eyal@wizery.com>
    Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>