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mac80211: merge another upstream aggregation fix

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29496 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2011-12-10 21:17:19 +00:00
parent ac8143726d
commit 7c3b776087
1 changed files with 58 additions and 8 deletions
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66
package/mac80211/patches/300-pending_work.patch
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@ -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;