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iwlwifi: mvm: drop BA sessions on too many old-SN frames

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Certain APs (I think a certain Broadcom model) interact badly with our
full state BA bitmap handling, and if triggered badly with many powersave
transitions they keep sending frames from before the window, which our
hardware then doesn't appear to ACK (to them) since it has moved on and
is sending ACKs for higher SNs now.

Try to detect this situation and if this keeps happening, disable the
aggregation session.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Johannes Berg 2019-07-16 14:57:18 +02:00 • committed by Luca Coelho
commit 0968fbfa41
3 changed files with 63 additions and 0 deletions
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