• Johannes Berg's avatar
    mac80211: fix offchannel queue stop · 5b714c6a
    Johannes Berg authored
    Somebody noticed this problem, and I outlined
    to them how to fix it, but haven't heard back
    from them. So while I was adding the state
    field I figured I could use it to fix it.
    The problem, as I understand it, is that when
    we go offchannel while the driver has a queue
    stopped, the driver will likely start draining
    the queue and then enable it while offchannel.
    This in turn will enable the interface queue,
    and that leads to transmitting data frames on
    the wrong channel.
    Fix this by keeping track of offchannel status
    per interface, and not enabling the interface
    queues on interfaces that are offchannel when
    the driver enables a queue.
    Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
    Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
util.c 35.3 KB