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RE: [PATCH] mac80211: Call mgd_prepare_tx before deauthentication

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Grumbach, Emmanuel wrote:
> I see - we also had this problem and because of this, we implemented the flush
> callback that allows to wait until all the queues are empty.  So mac80211 will
> send the deauth, flush and only then it'd remove the VIF. This should allow
> the frame to make it to the air.  Note that API explicitly states that
> mgd_prepare_tx is before assoc only.

flush() doesn't force a context switch, no ?

For example, consider a P2P-GO in freq 2412 and STA in 5180 and both are active.
The current context is GO (2412) and at this time if a local deauth for the STA comes
from userspace, mac80211 sends a deauth frame to the driver and calls flush(),
but the context in the driver is still in channel 2412, so how will this work ?

Sujith
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