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| author | Ralf Baechle <ralf@linux-mips.org> | 2014-03-31 18:17:33 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-03-31 18:17:33 +0200 |
| commit | ade63aada79c61bcd5f51cbd310f237399892268 (patch) | |
| tree | 4f8605528bfd9b6261679883974b9ac4870223dd /net/mac80211/tx.c | |
| parent | 9a1724c7506bfa7d3d9dcab13f83e9e6446929f9 (diff) | |
| parent | c14af233fbe279d0e561ecf84f1208b1bae087ef (diff) | |
| download | lwn-ade63aada79c61bcd5f51cbd310f237399892268.tar.gz lwn-ade63aada79c61bcd5f51cbd310f237399892268.zip | |
Merge branch '3.14-fixes' into mips-for-linux-next
Diffstat (limited to 'net/mac80211/tx.c')
| -rw-r--r-- | net/mac80211/tx.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 97a02d3f7d87..4080c615636f 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -478,6 +478,20 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx) sta->sta.addr, sta->sta.aid, ac); if (tx->local->total_ps_buffered >= TOTAL_MAX_TX_BUFFER) purge_old_ps_buffers(tx->local); + + /* sync with ieee80211_sta_ps_deliver_wakeup */ + spin_lock(&sta->ps_lock); + /* + * STA woke up the meantime and all the frames on ps_tx_buf have + * been queued to pending queue. No reordering can happen, go + * ahead and Tx the packet. + */ + if (!test_sta_flag(sta, WLAN_STA_PS_STA) && + !test_sta_flag(sta, WLAN_STA_PS_DRIVER)) { + spin_unlock(&sta->ps_lock); + return TX_CONTINUE; + } + if (skb_queue_len(&sta->ps_tx_buf[ac]) >= STA_MAX_TX_BUFFER) { struct sk_buff *old = skb_dequeue(&sta->ps_tx_buf[ac]); ps_dbg(tx->sdata, @@ -492,6 +506,7 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx) info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING; info->flags &= ~IEEE80211_TX_TEMPORARY_FLAGS; skb_queue_tail(&sta->ps_tx_buf[ac], tx->skb); + spin_unlock(&sta->ps_lock); if (!timer_pending(&local->sta_cleanup)) mod_timer(&local->sta_cleanup, |