diff options
| author | nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2012-03-10 13:31:31 +0000 |
|---|---|---|
| committer | nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2012-03-10 13:31:31 +0000 |
| commit | 92e1c8bfd356f528c919e2ac91f891a05d91d33d (patch) | |
| tree | 18e9400300fb250bd7f86fd1025a4bc0ee208965 /package/mac80211/patches/300-pending_work.patch | |
| parent | e690881d079b342e8a8143747690cc503e862dc1 (diff) | |
mac80211: limit TID buffering to prevent out-of-memory issues on low-memory systems
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@30870 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'package/mac80211/patches/300-pending_work.patch')
| -rw-r--r-- | package/mac80211/patches/300-pending_work.patch | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/package/mac80211/patches/300-pending_work.patch b/package/mac80211/patches/300-pending_work.patch index 0ca6a02b5..25d3b1744 100644 --- a/package/mac80211/patches/300-pending_work.patch +++ b/package/mac80211/patches/300-pending_work.patch @@ -615,6 +615,28 @@ #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG printk(KERN_DEBUG "STA %pM aid %d: PS buffer for AC %d\n", sta->sta.addr, sta->sta.aid, ac); +@@ -1060,6 +1065,7 @@ static bool ieee80211_tx_prep_agg(struct + { + bool queued = false; + bool reset_agg_timer = false; ++ struct sk_buff *purge_skb = NULL; + + if (test_bit(HT_AGG_STATE_OPERATIONAL, &tid_tx->state)) { + info->flags |= IEEE80211_TX_CTL_AMPDU; +@@ -1101,8 +1107,13 @@ static bool ieee80211_tx_prep_agg(struct + info->control.vif = &tx->sdata->vif; + info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING; + __skb_queue_tail(&tid_tx->pending, skb); ++ if (skb_queue_len(&tid_tx->pending) > STA_MAX_TX_BUFFER) ++ purge_skb = __skb_dequeue(&tid_tx->pending); + } + spin_unlock(&tx->sta->lock); ++ ++ if (purge_skb) ++ dev_kfree_skb(purge_skb); + } + + /* reset session timer */ --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -480,7 +480,7 @@ struct ieee80211_if_ibss { |