mac80211: A-MPDU MLME use dynamic allocation
This patch alters the A-MPDU MLME in sta_info to use dynamic allocation,
thus drastically improving memory usage - from a constant ~2 Kbyte in
the previous (static) allocation to a lower limit of ~200 Byte and an upper
limit of ~2 Kbyte.
Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 644d277..d9c6ed5 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1514,9 +1514,10 @@
if (!rx->sta)
return RX_CONTINUE;
tid = le16_to_cpu(bar->control) >> 12;
- tid_agg_rx = &(rx->sta->ampdu_mlme.tid_rx[tid]);
- if (tid_agg_rx->state != HT_AGG_STATE_OPERATIONAL)
+ if (rx->sta->ampdu_mlme.tid_state_rx[tid]
+ != HT_AGG_STATE_OPERATIONAL)
return RX_CONTINUE;
+ tid_agg_rx = rx->sta->ampdu_mlme.tid_rx[tid];
start_seq_num = le16_to_cpu(bar->start_seq_num) >> 4;
@@ -2123,11 +2124,12 @@
qc = skb->data + ieee80211_get_hdrlen(fc) - QOS_CONTROL_LEN;
tid = qc[0] & QOS_CONTROL_TID_MASK;
- tid_agg_rx = &(sta->ampdu_mlme.tid_rx[tid]);
- if (tid_agg_rx->state != HT_AGG_STATE_OPERATIONAL)
+ if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_OPERATIONAL)
goto end_reorder;
+ tid_agg_rx = sta->ampdu_mlme.tid_rx[tid];
+
/* null data frames are excluded */
if (unlikely(fc & IEEE80211_STYPE_NULLFUNC))
goto end_reorder;