mac80211: don't send deferred frames outside the SP
Frames that are sent between ampdu_action(IEEE80211_AMPDU_TX_START) and the move to the HT_AGG_STATE_OPERATIONAL state are buffered. If we try to start an A-MPDU session while the peer is sleeping and polling frames with U-APSD, we may have frames that will be buffered by ieee80211_tx_prep_agg. These frames have IEEE80211_TX_CTL_NO_PS_BUFFER set since they are sent to a sleeping client and possibly IEEE80211_TX_STATUS_EOSP. If the frame is buffered, we need clear these two flags since they will be re-sent after the move to HT_AGG_STATE_OPERATIONAL state which is very likely to happen after the SP ends. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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c2d45923e3
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facde7f332
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@ -1118,9 +1118,7 @@ static bool ieee80211_tx_prep_agg(struct ieee80211_tx_data *tx,
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queued = true;
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info->control.vif = &tx->sdata->vif;
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info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING;
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info->flags &= ~IEEE80211_TX_TEMPORARY_FLAGS |
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IEEE80211_TX_CTL_NO_PS_BUFFER |
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IEEE80211_TX_STATUS_EOSP;
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info->flags &= ~IEEE80211_TX_TEMPORARY_FLAGS;
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__skb_queue_tail(&tid_tx->pending, skb);
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if (skb_queue_len(&tid_tx->pending) > STA_MAX_TX_BUFFER)
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purge_skb = __skb_dequeue(&tid_tx->pending);
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