diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2010-09-19 17:23:15 +0000 |
|---|---|---|
| committer | Felix Fietkau <nbd@openwrt.org> | 2010-09-19 17:23:15 +0000 |
| commit | d6f08bcf81b9ae4eca02e745db4888fc9319b600 (patch) | |
| tree | 783ea89cf4f4af98aceea725455df61d7aff7caf /package/mac80211/patches/521-ath9k_aggr_race_fix.patch | |
| parent | cdd98e3f3a5c94434eace9429e1e9efae3e202fd (diff) | |
| download | upstream-d6f08bcf81b9ae4eca02e745db4888fc9319b600.tar.gz upstream-d6f08bcf81b9ae4eca02e745db4888fc9319b600.tar.bz2 upstream-d6f08bcf81b9ae4eca02e745db4888fc9319b600.zip | |
ath9k: fix various aggregation related race conditions
SVN-Revision: 23097
Diffstat (limited to 'package/mac80211/patches/521-ath9k_aggr_race_fix.patch')
| -rw-r--r-- | package/mac80211/patches/521-ath9k_aggr_race_fix.patch | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/package/mac80211/patches/521-ath9k_aggr_race_fix.patch b/package/mac80211/patches/521-ath9k_aggr_race_fix.patch new file mode 100644 index 0000000000..0da1e6124d --- /dev/null +++ b/package/mac80211/patches/521-ath9k_aggr_race_fix.patch @@ -0,0 +1,52 @@ +--- a/drivers/net/wireless/ath/ath9k/xmit.c ++++ b/drivers/net/wireless/ath/ath9k/xmit.c +@@ -784,17 +784,23 @@ static void ath_tx_sched_aggr(struct ath + status != ATH_AGGR_BAW_CLOSED); + } + +-void ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta, +- u16 tid, u16 *ssn) ++int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta, ++ u16 tid, u16 *ssn) + { + struct ath_atx_tid *txtid; + struct ath_node *an; + + an = (struct ath_node *)sta->drv_priv; + txtid = ATH_AN_2_TID(an, tid); ++ ++ if (txtid->state & (AGGR_CLEANUP | AGGR_ADDBA_COMPLETE)) ++ return -EAGAIN; ++ + txtid->state |= AGGR_ADDBA_PROGRESS; + txtid->paused = true; + *ssn = txtid->seq_start; ++ ++ return 0; + } + + void ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid) +--- a/drivers/net/wireless/ath/ath9k/ath9k.h ++++ b/drivers/net/wireless/ath/ath9k/ath9k.h +@@ -346,8 +346,8 @@ void ath_tx_tasklet(struct ath_softc *sc + void ath_tx_edma_tasklet(struct ath_softc *sc); + void ath_tx_cabq(struct ieee80211_hw *hw, struct sk_buff *skb); + bool ath_tx_aggr_check(struct ath_softc *sc, struct ath_node *an, u8 tidno); +-void ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta, +- u16 tid, u16 *ssn); ++int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta, ++ u16 tid, u16 *ssn); + void ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid); + void ath_tx_aggr_resume(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid); + void ath9k_enable_ps(struct ath_softc *sc); +--- a/drivers/net/wireless/ath/ath9k/main.c ++++ b/drivers/net/wireless/ath/ath9k/main.c +@@ -1968,7 +1968,7 @@ static int ath9k_ampdu_action(struct iee + break; + case IEEE80211_AMPDU_TX_START: + ath9k_ps_wakeup(sc); +- ath_tx_aggr_start(sc, sta, tid, ssn); ++ ret = ath_tx_aggr_start(sc, sta, tid, ssn); + ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); + ath9k_ps_restore(sc); + break; |