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iwlwifi: mvm: document passing unexpected Block Ack Request frames

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When we get an unexpected Block Ack Request frame, the BAID from
the hardware will be invalid, and we'll pass it to mac80211 for
further handling (sending a delBA action frame.)

Add a comment explaining that, in case anyone looks in the future.

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 2016-08-18 14:18:40 +02:00 committed by Luca Coelho
parent 5b88792cd8
commit 8ec8ed4379
1 changed files with 5 additions and 0 deletions
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5
drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
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@ -591,6 +591,11 @@ static bool iwl_mvm_reorder(struct iwl_mvm *mvm,
baid = (reorder & IWL_RX_MPDU_REORDER_BAID_MASK) >>
IWL_RX_MPDU_REORDER_BAID_SHIFT;
/*
* This also covers the case of receiving a Block Ack Request
* outside a BA session; we'll pass it to mac80211 and that
* then sends a delBA action frame.
*/
if (baid == IWL_RX_REORDER_DATA_INVALID_BAID)
return false;