mac80211: always set the buf_size in AddBA req to 64
Advertising reordering window in ADDBA less than 64 can crash some APs,
an example is LinkSys WRT120N (with FW v1.0.07 build 002 Jun 18 2012).
On the other hand, a driver may need to limit Tx A-MPDU size for its own
reasons, like specific HW limitations.
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index a758eb84..ff75718 100644
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -500,7 +500,7 @@
/* send AddBA request */
ieee80211_send_addba_request(sdata, sta->sta.addr, tid,
tid_tx->dialog_token, start_seq_num,
- local->hw.max_tx_aggregation_subframes,
+ IEEE80211_MAX_AMPDU_BUF,
tid_tx->timeout);
}
@@ -926,6 +926,7 @@
amsdu = capab & IEEE80211_ADDBA_PARAM_AMSDU_MASK;
tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
buf_size = (capab & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) >> 6;
+ buf_size = min(buf_size, local->hw.max_tx_aggregation_subframes);
mutex_lock(&sta->ampdu_mlme.mtx);