• Michal Kazior's avatar
    cfg80211: consider existing DFS interfaces · 9e0e2961
    Michal Kazior authored
    It was possible to break interface combinations in
    the following way:
     combo 1: iftype = AP, num_ifaces = 2, num_chans = 2,
     combo 2: iftype = AP, num_ifaces = 1, num_chans = 1, radar = HT20
    With the above interface combinations it was
    possible to:
     step 1. start AP on DFS channel by matching combo 2
     step 2. start AP on non-DFS channel by matching combo 1
    This was possible beacuse (step 2) did not consider
    if other interfaces require radar detection.
    The patch changes how cfg80211 tracks channels -
    instead of channel itself now a complete chandef
    is stored.
    Signed-off-by: default avatarMichal Kazior <michal.kazior@tieto.com>
    Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
cfg80211.h 164 KB