diff options
| -rw-r--r-- | package/mac80211/patches/300-pending_work.patch | 66 |
1 files changed, 58 insertions, 8 deletions
diff --git a/package/mac80211/patches/300-pending_work.patch b/package/mac80211/patches/300-pending_work.patch index 2119b42be6..1b7f41b19a 100644 --- a/package/mac80211/patches/300-pending_work.patch +++ b/package/mac80211/patches/300-pending_work.patch @@ -517,7 +517,16 @@ IEEE80211_STYPE_ACTION); --- a/net/mac80211/agg-tx.c +++ b/net/mac80211/agg-tx.c -@@ -79,10 +79,13 @@ static void ieee80211_send_addba_request +@@ -55,6 +55,8 @@ + * @ampdu_action function will be called with the action + * %IEEE80211_AMPDU_TX_STOP. In this case, the call must not fail, + * and the driver must later call ieee80211_stop_tx_ba_cb_irqsafe(). ++ * Note that the sta can get destroyed before the BA tear down is ++ * complete. + */ + + static void ieee80211_send_addba_request(struct ieee80211_sub_if_data *sdata, +@@ -79,10 +81,13 @@ static void ieee80211_send_addba_request memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); if (sdata->vif.type == NL80211_IFTYPE_AP || sdata->vif.type == NL80211_IFTYPE_AP_VLAN || @@ -532,7 +541,7 @@ mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION); -@@ -319,6 +322,38 @@ ieee80211_wake_queue_agg(struct ieee8021 +@@ -319,6 +324,38 @@ ieee80211_wake_queue_agg(struct ieee8021 __release(agg_queue); } @@ -571,7 +580,7 @@ void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid) { struct tid_ampdu_tx *tid_tx; -@@ -330,19 +365,17 @@ void ieee80211_tx_ba_session_handle_star +@@ -330,19 +367,17 @@ void ieee80211_tx_ba_session_handle_star tid_tx = rcu_dereference_protected_tid_tx(sta, tid); /* @@ -598,7 +607,7 @@ */ synchronize_net(); -@@ -356,10 +389,11 @@ void ieee80211_tx_ba_session_handle_star +@@ -356,10 +391,11 @@ void ieee80211_tx_ba_session_handle_star " tid %d\n", tid); #endif spin_lock_bh(&sta->lock); @@ -611,7 +620,7 @@ #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,40)) kfree_rcu(tid_tx, rcu_head); #else -@@ -368,9 +402,6 @@ void ieee80211_tx_ba_session_handle_star +@@ -368,9 +404,6 @@ void ieee80211_tx_ba_session_handle_star return; } @@ -621,7 +630,7 @@ /* activate the timer for the recipient's addBA response */ mod_timer(&tid_tx->addba_resp_timer, jiffies + ADDBA_RESP_INTERVAL); #ifdef CONFIG_MAC80211_HT_DEBUG -@@ -437,7 +468,9 @@ int ieee80211_start_tx_ba_session(struct +@@ -437,7 +470,9 @@ int ieee80211_start_tx_ba_session(struct if (sdata->vif.type != NL80211_IFTYPE_STATION && sdata->vif.type != NL80211_IFTYPE_MESH_POINT && sdata->vif.type != NL80211_IFTYPE_AP_VLAN && @@ -632,7 +641,7 @@ return -EINVAL; if (test_sta_flag(sta, WLAN_STA_BLOCK_BA)) { -@@ -448,6 +481,27 @@ int ieee80211_start_tx_ba_session(struct +@@ -448,6 +483,27 @@ int ieee80211_start_tx_ba_session(struct return -EINVAL; } @@ -660,7 +669,7 @@ spin_lock_bh(&sta->lock); /* we have tried too many times, receiver does not want A-MPDU */ -@@ -508,38 +562,6 @@ int ieee80211_start_tx_ba_session(struct +@@ -508,38 +564,6 @@ int ieee80211_start_tx_ba_session(struct } EXPORT_SYMBOL(ieee80211_start_tx_ba_session); @@ -1297,3 +1306,44 @@ CALL_TXH(ieee80211_tx_h_michael_mic_add); CALL_TXH(ieee80211_tx_h_sequence); +--- a/net/mac80211/sta_info.c ++++ b/net/mac80211/sta_info.c +@@ -851,6 +851,7 @@ static int __must_check __sta_info_destr + struct ieee80211_sub_if_data *sdata; + unsigned long flags; + int ret, i, ac; ++ struct tid_ampdu_tx *tid_tx; + + might_sleep(); + +@@ -949,6 +950,30 @@ static int __must_check __sta_info_destr + } + #endif + ++ /* There could be some memory leaks because of ampdu tx pending queue ++ * not being freed before destroying the station info. ++ * ++ * Make sure that such queues are purged before freeing the station ++ * info. ++ * TODO: We have to somehow postpone the full destruction ++ * until the aggregation stop completes. Refer ++ * http://thread.gmane.org/gmane.linux.kernel.wireless.general/81936 ++ */ ++ for (i = 0; i < STA_TID_NUM; i++) { ++ if (!sta->ampdu_mlme.tid_tx[i]) ++ continue; ++ tid_tx = sta->ampdu_mlme.tid_tx[i]; ++ if (skb_queue_len(&tid_tx->pending)) { ++#ifdef CONFIG_MAC80211_HT_DEBUG ++ wiphy_debug(local->hw.wiphy, "TX A-MPDU purging %d " ++ "packets for tid=%d\n", ++ skb_queue_len(&tid_tx->pending), i); ++#endif /* CONFIG_MAC80211_HT_DEBUG */ ++ __skb_queue_purge(&tid_tx->pending); ++ } ++ kfree_rcu(tid_tx, rcu_head); ++ } ++ + __sta_info_free(local, sta); + + return 0; |