• Johannes Berg's avatar
    nl80211/cfg80211: support VHT channel configuration · 3d9d1d66
    Johannes Berg authored
    
    
    Change nl80211 to support specifying a VHT (or HT)
    using the control channel frequency (as before) and
    new attributes for the channel width and first and
    second center frequency. The old channel type is of
    course still supported for HT.
    
    Also change the cfg80211 channel definition struct
    to support these by adding the relevant fields to
    it (and removing the _type field.)
    
    This also adds new helper functions:
     - cfg80211_chandef_create to create a channel def
       struct given the control channel and channel type,
     - cfg80211_chandef_identical to check if two channel
       definitions are identical
     - cfg80211_chandef_compatible to check if the given
       channel definitions are compatible, and return the
       wider of the two
    
    This isn't entirely complete, but that doesn't matter
    until we have a driver using it. In particular, it's
    missing
     - regulatory checks on the usable bandwidth (if that
       even makes sense)
     - regulatory TX power (database can't deal with it)
     - a proper channel compatibility calculation for the
       new channel types
    Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
    3d9d1d66
nl80211.h 128 KB