diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2014-07-23 17:40:54 +0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2014-07-23 21:03:11 +0400 |
| commit | c01fac1c77a00227f706a1654317023e3f4ac7f0 (patch) | |
| tree | 897ff1b3fd10b17ae271da81b41baa38af56e6e9 /drivers | |
| parent | 3b8de0749276abcb86bd7a6ca6691769a4ba7987 (diff) | |
| download | linux-c01fac1c77a00227f706a1654317023e3f4ac7f0.tar.xz | |
ath9k: fix aggregation session lockup
If an aggregation session fails, frames still end up in the driver queue
with IEEE80211_TX_CTL_AMPDU set.
This causes tx for the affected station/tid to stall, since
ath_tx_get_tid_subframe returning packets to send.
Fix this by clearing IEEE80211_TX_CTL_AMPDU as long as no aggregation
session is running.
Cc: stable@vger.kernel.org
Reported-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/xmit.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index 66acb2cbd9df..7c28cb55610b 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -887,6 +887,15 @@ ath_tx_get_tid_subframe(struct ath_softc *sc, struct ath_txq *txq, tx_info = IEEE80211_SKB_CB(skb); tx_info->flags &= ~IEEE80211_TX_CTL_CLEAR_PS_FILT; + + /* + * No aggregation session is running, but there may be frames + * from a previous session or a failed attempt in the queue. + * Send them out as normal data frames + */ + if (!tid->active) + tx_info->flags &= ~IEEE80211_TX_CTL_AMPDU; + if (!(tx_info->flags & IEEE80211_TX_CTL_AMPDU)) { bf->bf_state.bf_type = 0; return bf; |