From: Johannes Berg Date: Thu, 18 Aug 2016 12:18:40 +0000 (+0200) Subject: iwlwifi: mvm: document passing unexpected Block Ack Request frames X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8ec8ed437936ea40427ac2777dd4b65c87009d0a;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git iwlwifi: mvm: document passing unexpected Block Ack Request frames 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 Signed-off-by: Luca Coelho --- diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c index 0274f14e88e3..a57c6ef5bc14 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c @@ -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;