• Luis R. Rodriguez's avatar
    cfg80211/mac80211: Add 802.11d support · 3f2355cb
    Luis R. Rodriguez authored
    
    
    This adds country IE parsing to mac80211 and enables its usage
    within the new regulatory infrastructure in cfg80211. We parse
    the country IEs only on management beacons for the BSSID you are
    associated to and disregard the IEs when the country and environment
    (indoor, outdoor, any) matches the already processed country IE.
    
    To avoid following misinformed or outdated APs we build and use
    a regulatory domain out of the intersection between what the AP
    provides us on the country IE and what CRDA is aware is allowed
    on the same country.
    
    A secondary device is allowed to follow only the same country IE
    as it make no sense for two devices on a system to be in two
    different countries.
    
    In the case the AP is using country IEs for an incorrect country
    the user may help compliance further by setting the regulatory
    domain before or after the IE is parsed and in that case another
    intersection will be performed.
    
    CONFIG_WIRELESS_OLD_REGULATORY is supported but requires CRDA
    present.
    Signed-off-by: default avatarLuis R. Rodriguez <lrodriguez@atheros.com>
    Acked-by: default avatarJohannes Berg <johannes@sipsolutions.net>
    Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
    3f2355cb