diff options
Diffstat (limited to 'net/mac80211/agg-tx.c')
| -rw-r--r-- | net/mac80211/agg-tx.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c index e92f98d3274..76be6174419 100644 --- a/net/mac80211/agg-tx.c +++ b/net/mac80211/agg-tx.c @@ -392,6 +392,7 @@ void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid) #endif spin_lock_bh(&sta->lock); + sta->ampdu_mlme.last_addba_req_time[tid] = jiffies; sta->ampdu_mlme.addba_req_num[tid]++; spin_unlock_bh(&sta->lock); @@ -492,6 +493,24 @@ int ieee80211_start_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid, goto err_unlock_sta; } + /* + * if we have tried more than HT_AGG_BURST_RETRIES times we + * will spread our requests in time to avoid stalling connection + * for too long + */ + if (sta->ampdu_mlme.addba_req_num[tid] > HT_AGG_BURST_RETRIES && + time_before(jiffies, sta->ampdu_mlme.last_addba_req_time[tid] + + HT_AGG_RETRIES_PERIOD)) { +#ifdef CONFIG_MAC80211_HT_DEBUG + printk(KERN_DEBUG "BA request denied - " + "waiting a grace period after %d failed requests " + "on tid %u\n", + sta->ampdu_mlme.addba_req_num[tid], tid); +#endif /* CONFIG_MAC80211_HT_DEBUG */ + ret = -EBUSY; + goto err_unlock_sta; + } + tid_tx = rcu_dereference_protected_tid_tx(sta, tid); /* check if the TID is not in aggregation flow already */ if (tid_tx || sta->ampdu_mlme.tid_start_tx[tid]) { |