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authorFelix Fietkau <nbd@openwrt.org>2012-10-07 21:35:29 +0000
committerFelix Fietkau <nbd@openwrt.org>2012-10-07 21:35:29 +0000
commite1ceb94c2f85f67c487898c59df5ca751489c7af (patch)
treeaa36bed989ad06738dee3b69c32f28fe96824ee0 /package
parentfafaa38ae55cab486f2b929a131fe433ce180224 (diff)
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mac80211: use ieee80211_free_txskb in a few more places to prevent skb leaks
SVN-Revision: 33635
Diffstat (limited to 'package')
-rw-r--r--package/mac80211/patches/527-mac80211_use_ieee80211_free_txskb.patch107
-rw-r--r--package/mac80211/patches/550-mac80211_optimize_mcs_rate_mask.patch2
2 files changed, 108 insertions, 1 deletions
diff --git a/package/mac80211/patches/527-mac80211_use_ieee80211_free_txskb.patch b/package/mac80211/patches/527-mac80211_use_ieee80211_free_txskb.patch
new file mode 100644
index 0000000..e6db104
--- /dev/null
+++ b/package/mac80211/patches/527-mac80211_use_ieee80211_free_txskb.patch
@@ -0,0 +1,107 @@
+--- a/net/mac80211/tx.c
++++ b/net/mac80211/tx.c
+@@ -354,7 +354,7 @@ static void purge_old_ps_buffers(struct
+ total += skb_queue_len(&sta->ps_tx_buf[ac]);
+ if (skb) {
+ purged++;
+- dev_kfree_skb(skb);
++ ieee80211_free_txskb(&local->hw, skb);
+ break;
+ }
+ }
+@@ -466,7 +466,7 @@ ieee80211_tx_h_unicast_ps_buf(struct iee
+ ps_dbg(tx->sdata,
+ "STA %pM TX buffer for AC %d full - dropping oldest frame\n",
+ sta->sta.addr, ac);
+- dev_kfree_skb(old);
++ ieee80211_free_txskb(&local->hw, old);
+ } else
+ tx->local->total_ps_buffered++;
+
+@@ -1103,7 +1103,7 @@ static bool ieee80211_tx_prep_agg(struct
+ spin_unlock(&tx->sta->lock);
+
+ if (purge_skb)
+- dev_kfree_skb(purge_skb);
++ ieee80211_free_txskb(&tx->local->hw, purge_skb);
+ }
+
+ /* reset session timer */
+@@ -1214,7 +1214,7 @@ static bool ieee80211_tx_frags(struct ie
+ #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ if (WARN_ON_ONCE(q >= local->hw.queues)) {
+ __skb_unlink(skb, skbs);
+- dev_kfree_skb(skb);
++ ieee80211_free_txskb(&local->hw, skb);
+ continue;
+ }
+ #endif
+@@ -1356,7 +1356,7 @@ static int invoke_tx_handlers(struct iee
+ if (unlikely(res == TX_DROP)) {
+ I802_DEBUG_INC(tx->local->tx_handlers_drop);
+ if (tx->skb)
+- dev_kfree_skb(tx->skb);
++ ieee80211_free_txskb(&tx->local->hw, tx->skb);
+ else
+ __skb_queue_purge(&tx->skbs);
+ return -1;
+@@ -1393,7 +1393,7 @@ static bool ieee80211_tx(struct ieee8021
+ res_prepare = ieee80211_tx_prepare(sdata, &tx, skb);
+
+ if (unlikely(res_prepare == TX_DROP)) {
+- dev_kfree_skb(skb);
++ ieee80211_free_txskb(&local->hw, skb);
+ goto out;
+ } else if (unlikely(res_prepare == TX_QUEUED)) {
+ goto out;
+@@ -1465,7 +1465,7 @@ void ieee80211_xmit(struct ieee80211_sub
+ headroom = max_t(int, 0, headroom);
+
+ if (ieee80211_skb_resize(sdata, skb, headroom, may_encrypt)) {
+- dev_kfree_skb(skb);
++ ieee80211_free_txskb(&local->hw, skb);
+ rcu_read_unlock();
+ return;
+ }
+@@ -2056,8 +2056,10 @@ netdev_tx_t ieee80211_subif_start_xmit(s
+ head_need += IEEE80211_ENCRYPT_HEADROOM;
+ head_need += local->tx_headroom;
+ head_need = max_t(int, 0, head_need);
+- if (ieee80211_skb_resize(sdata, skb, head_need, true))
+- goto fail;
++ if (ieee80211_skb_resize(sdata, skb, head_need, true)) {
++ ieee80211_free_txskb(&local->hw, skb);
++ return NETDEV_TX_OK;
++ }
+ }
+
+ if (encaps_data) {
+@@ -2190,7 +2192,7 @@ void ieee80211_tx_pending(unsigned long
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+
+ if (WARN_ON(!info->control.vif)) {
+- kfree_skb(skb);
++ ieee80211_free_txskb(&local->hw, skb);
+ continue;
+ }
+
+--- a/net/mac80211/status.c
++++ b/net/mac80211/status.c
+@@ -34,7 +34,7 @@ void ieee80211_tx_status_irqsafe(struct
+ skb_queue_len(&local->skb_queue_unreliable);
+ while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT &&
+ (skb = skb_dequeue(&local->skb_queue_unreliable))) {
+- dev_kfree_skb_irq(skb);
++ ieee80211_free_txskb(hw, skb);
+ tmp--;
+ I802_DEBUG_INC(local->tx_status_drop);
+ }
+@@ -159,7 +159,7 @@ static void ieee80211_handle_filtered_fr
+ "dropped TX filtered frame, queue_len=%d PS=%d @%lu\n",
+ skb_queue_len(&sta->tx_filtered[ac]),
+ !!test_sta_flag(sta, WLAN_STA_PS_STA), jiffies);
+- dev_kfree_skb(skb);
++ ieee80211_free_txskb(&local->hw, skb);
+ }
+
+ static void ieee80211_check_pending_bar(struct sta_info *sta, u8 *addr, u8 tid)
diff --git a/package/mac80211/patches/550-mac80211_optimize_mcs_rate_mask.patch b/package/mac80211/patches/550-mac80211_optimize_mcs_rate_mask.patch
index 53889d1..f778338 100644
--- a/package/mac80211/patches/550-mac80211_optimize_mcs_rate_mask.patch
+++ b/package/mac80211/patches/550-mac80211_optimize_mcs_rate_mask.patch
@@ -69,7 +69,7 @@
txrc.bss = (tx->sdata->vif.type == NL80211_IFTYPE_AP ||
tx->sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
tx->sdata->vif.type == NL80211_IFTYPE_ADHOC);
-@@ -2447,8 +2449,6 @@ struct sk_buff *ieee80211_beacon_get_tim
+@@ -2449,8 +2451,6 @@ struct sk_buff *ieee80211_beacon_get_tim
txrc.max_rate_idx = -1;
else
txrc.max_rate_idx = fls(txrc.rate_idx_mask) - 1;