2014-04-29 15:52:03 +00:00
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commit c82552c5b0cb1735dbcbad78b1ffc6d3c212dc56
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Author: Tim Harvey <tharvey@gateworks.com>
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Date: Mon Apr 21 16:14:57 2014 -0700
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ath9k: add a recv budget
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Implement a recv budget so that in cases of high traffic we still allow other
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taskets to get processed.
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Without this, we can encounter a host of issues during high wireless traffic
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reception depending on system load including rcu stall's detected (ARM),
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soft lockups, failure to service critical tasks such as watchdog resets,
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and triggering of the tx stuck tasklet.
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The same thing was proposed previously by Ben:
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http://www.spinics.net/lists/linux-wireless/msg112891.html
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The only difference here is that I make sure only processed packets are counted
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in the budget by checking at the end of the rx loop.
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Signed-off-by: Tim Harvey <tharvey@gateworks.com>
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Acked-by: Felix Fietkau <nbd@openwrt.org>
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Signed-off-by: John W. Linville <linville@tuxdriver.com>
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commit 3a758134e66ca74a9df792616b5288b2fa2cfd7f
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Author: Tim Harvey <tharvey@gateworks.com>
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Date: Mon Apr 21 16:14:56 2014 -0700
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ath9k: fix possible hang on flush
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If a flush is requested, make sure to clear the descriptor once we've
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processed it.
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This resolves a hang that will occur if all RX descriptors are full when a
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flush is requested.
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Signed-off-by: Tim Harvey <tharvey@gateworks.com>
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Acked-by: Felix Fietkau <nbd@openwrt.org>
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Signed-off-by: John W. Linville <linville@tuxdriver.com>
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2014-04-28 16:35:25 +00:00
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commit eefb1d6adc4c60d219182b8917e4567484ce07fc
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Author: Felix Fietkau <nbd@openwrt.org>
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Date: Mon Apr 28 18:27:41 2014 +0200
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ath9k: remove tid->paused flag
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There are some corner cases where the driver could get stuck with a full
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tid queue that is paused, leading to a software tx queue hang.
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Since the tx queueing rework, pausing per-tid queues on aggregation
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session setup is no longer necessary. The driver will assign sequence
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numbers to buffered frames when a new session is established, in order
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to get the correct starting sequence number.
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mac80211 prevents new frames from entering the queue during setup.
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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2014-04-27 14:39:06 +00:00
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commit 98a713933d8495f4078f561c1e651b738dd5b531
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Author: Felix Fietkau <nbd@openwrt.org>
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Date: Sun Apr 27 14:49:03 2014 +0200
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ath9k_hw: do not lower ANI setting below default on AR913x
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When the amount of noise fluctuates strongly, low immunity settings
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can sometimes disrupt signal detection on AR913x chips. When that
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happens, no OFDM/CCK errors are reported anymore, and ANI tunes the
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radio to the lowest immunity settings.
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Usually rx/tx fails as well in that case.
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To fix this, keep noise immunity settings at or above ANI default level,
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which will keep radio parameters at or above INI values.
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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2014-04-10 08:52:33 +00:00
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commit 7cbb4c021bfd1e656f5b9953a947ab3c64e4e3b0
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Author: Felix Fietkau <nbd@openwrt.org>
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Date: Thu Apr 10 10:49:01 2014 +0200
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mac80211: exclude AP_VLAN interfaces from tx power calculation
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Their power value is initialized to zero. This patch fixes an issue
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where the configured power drops to the minimum value when AP_VLAN
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interfaces are created/removed.
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Cc: stable@vger.kernel.org
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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2014-04-08 22:11:27 +00:00
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commit 0ca13e26341733bf9577287fb04a3bef0d2f5cc9
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Author: Felix Fietkau <nbd@openwrt.org>
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Date: Wed Apr 9 00:07:01 2014 +0200
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mac80211: suppress BSS info change notifications for AP_VLAN
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Fixes warnings on tx power changes
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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2014-04-08 22:11:19 +00:00
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commit ec998e5991781ecdaad0911dc64f1c8d3749c308
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Author: Felix Fietkau <nbd@openwrt.org>
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Date: Tue Apr 8 23:42:17 2014 +0200
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ath9k: fix a scheduling while atomic bug in CSA handling
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Commit "ath9k: prepare for multi-interface CSA support" added a call to
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ieee80211_iterate_active_interfaces in atomic context (beacon tasklet),
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which is crashing.
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Use ieee80211_iterate_active_interfaces_atomic instead.
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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2014-04-08 22:11:13 +00:00
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commit 93f310a38a1d81a4bc8fcd9bf29628bd721cf2ef
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Author: Felix Fietkau <nbd@openwrt.org>
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Date: Sun Apr 6 23:35:28 2014 +0200
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ath9k_hw: reduce ANI firstep range for older chips
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Use 0-8 instead of 0-16, which is closer to the old implementation.
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Also drop the overwrite of the firstep_low parameter to improve
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stability.
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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--- a/drivers/net/wireless/ath/ath9k/ar5008_phy.c
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+++ b/drivers/net/wireless/ath/ath9k/ar5008_phy.c
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@@ -1004,11 +1004,9 @@ static bool ar5008_hw_ani_control_new(st
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case ATH9K_ANI_FIRSTEP_LEVEL:{
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u32 level = param;
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- value = level * 2;
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+ value = level;
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REG_RMW_FIELD(ah, AR_PHY_FIND_SIG,
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AR_PHY_FIND_SIG_FIRSTEP, value);
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- REG_RMW_FIELD(ah, AR_PHY_FIND_SIG_LOW,
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- AR_PHY_FIND_SIG_FIRSTEP_LOW, value);
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if (level != aniState->firstepLevel) {
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ath_dbg(common, ANI,
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2014-04-08 22:11:19 +00:00
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--- a/drivers/net/wireless/ath/ath9k/beacon.c
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+++ b/drivers/net/wireless/ath/ath9k/beacon.c
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@@ -312,10 +312,9 @@ static void ath9k_csa_update_vif(void *d
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void ath9k_csa_update(struct ath_softc *sc)
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{
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- ieee80211_iterate_active_interfaces(sc->hw,
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- IEEE80211_IFACE_ITER_NORMAL,
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- ath9k_csa_update_vif,
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- sc);
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+ ieee80211_iterate_active_interfaces_atomic(sc->hw,
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+ IEEE80211_IFACE_ITER_NORMAL,
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+ ath9k_csa_update_vif, sc);
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}
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void ath9k_beacon_tasklet(unsigned long data)
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2014-04-08 22:11:27 +00:00
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--- a/net/mac80211/main.c
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+++ b/net/mac80211/main.c
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2014-04-10 08:52:33 +00:00
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@@ -152,6 +152,8 @@ static u32 ieee80211_hw_conf_chan(struct
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list_for_each_entry_rcu(sdata, &local->interfaces, list) {
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if (!rcu_access_pointer(sdata->vif.chanctx_conf))
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continue;
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+ if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
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+ continue;
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power = min(power, sdata->vif.bss_conf.txpower);
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}
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rcu_read_unlock();
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@@ -203,7 +205,7 @@ void ieee80211_bss_info_change_notify(st
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2014-04-08 22:11:27 +00:00
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{
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struct ieee80211_local *local = sdata->local;
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- if (!changed)
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+ if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
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return;
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drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
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2014-04-27 14:39:06 +00:00
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--- a/drivers/net/wireless/ath/ath9k/ani.c
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+++ b/drivers/net/wireless/ath/ath9k/ani.c
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@@ -155,6 +155,9 @@ static void ath9k_hw_set_ofdm_nil(struct
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ATH9K_ANI_RSSI_THR_LOW,
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ATH9K_ANI_RSSI_THR_HIGH);
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+ if (AR_SREV_9100(ah) && immunityLevel < ATH9K_ANI_OFDM_DEF_LEVEL)
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+ immunityLevel = ATH9K_ANI_OFDM_DEF_LEVEL;
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+
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if (!scan)
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aniState->ofdmNoiseImmunityLevel = immunityLevel;
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@@ -235,6 +238,9 @@ static void ath9k_hw_set_cck_nil(struct
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BEACON_RSSI(ah), ATH9K_ANI_RSSI_THR_LOW,
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ATH9K_ANI_RSSI_THR_HIGH);
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+ if (AR_SREV_9100(ah) && immunityLevel < ATH9K_ANI_CCK_DEF_LEVEL)
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+ immunityLevel = ATH9K_ANI_CCK_DEF_LEVEL;
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+
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if (ah->opmode == NL80211_IFTYPE_STATION &&
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BEACON_RSSI(ah) <= ATH9K_ANI_RSSI_THR_LOW &&
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immunityLevel > ATH9K_ANI_CCK_MAX_LEVEL_LOW_RSSI)
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2014-04-28 16:35:25 +00:00
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--- a/drivers/net/wireless/ath/ath9k/ath9k.h
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+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
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@@ -251,7 +251,6 @@ struct ath_atx_tid {
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s8 bar_index;
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bool sched;
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- bool paused;
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bool active;
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};
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--- a/drivers/net/wireless/ath/ath9k/xmit.c
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+++ b/drivers/net/wireless/ath/ath9k/xmit.c
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@@ -107,9 +107,6 @@ static void ath_tx_queue_tid(struct ath_
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{
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struct ath_atx_ac *ac = tid->ac;
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- if (tid->paused)
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- return;
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-
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if (tid->sched)
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return;
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@@ -1407,7 +1404,6 @@ int ath_tx_aggr_start(struct ath_softc *
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ath_tx_tid_change_state(sc, txtid);
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txtid->active = true;
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- txtid->paused = true;
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*ssn = txtid->seq_start = txtid->seq_next;
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txtid->bar_index = -1;
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@@ -1427,7 +1423,6 @@ void ath_tx_aggr_stop(struct ath_softc *
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ath_txq_lock(sc, txq);
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txtid->active = false;
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- txtid->paused = false;
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ath_tx_flush_tid(sc, txtid);
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ath_tx_tid_change_state(sc, txtid);
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ath_txq_unlock_complete(sc, txq);
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@@ -1487,7 +1482,7 @@ void ath_tx_aggr_wakeup(struct ath_softc
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ath_txq_lock(sc, txq);
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ac->clear_ps_filter = true;
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- if (!tid->paused && ath_tid_has_buffered(tid)) {
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+ if (ath_tid_has_buffered(tid)) {
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ath_tx_queue_tid(txq, tid);
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ath_txq_schedule(sc, txq);
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}
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@@ -1510,7 +1505,6 @@ void ath_tx_aggr_resume(struct ath_softc
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ath_txq_lock(sc, txq);
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tid->baw_size = IEEE80211_MIN_AMPDU_BUF << sta->ht_cap.ampdu_factor;
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- tid->paused = false;
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if (ath_tid_has_buffered(tid)) {
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ath_tx_queue_tid(txq, tid);
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@@ -1544,8 +1538,6 @@ void ath9k_release_buffered_frames(struc
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continue;
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tid = ATH_AN_2_TID(an, i);
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- if (tid->paused)
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- continue;
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ath_txq_lock(sc, tid->ac->txq);
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while (nframes > 0) {
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@@ -1844,9 +1836,6 @@ void ath_txq_schedule(struct ath_softc *
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list_del(&tid->list);
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tid->sched = false;
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- if (tid->paused)
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- continue;
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-
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if (ath_tx_sched_aggr(sc, txq, tid, &stop))
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sent = true;
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@@ -2698,7 +2687,6 @@ void ath_tx_node_init(struct ath_softc *
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tid->baw_size = WME_MAX_BA;
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tid->baw_head = tid->baw_tail = 0;
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tid->sched = false;
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- tid->paused = false;
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tid->active = false;
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__skb_queue_head_init(&tid->buf_q);
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__skb_queue_head_init(&tid->retry_q);
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2014-04-29 15:52:03 +00:00
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--- a/drivers/net/wireless/ath/ath9k/recv.c
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+++ b/drivers/net/wireless/ath/ath9k/recv.c
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@@ -975,6 +975,7 @@ int ath_rx_tasklet(struct ath_softc *sc,
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u64 tsf = 0;
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unsigned long flags;
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dma_addr_t new_buf_addr;
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+ unsigned int budget = 512;
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if (edma)
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dma_type = DMA_BIDIRECTIONAL;
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@@ -1113,15 +1114,17 @@ requeue_drop_frag:
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}
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requeue:
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list_add_tail(&bf->list, &sc->rx.rxbuf);
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- if (flush)
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- continue;
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if (edma) {
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ath_rx_edma_buf_link(sc, qtype);
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} else {
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ath_rx_buf_relink(sc, bf);
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- ath9k_hw_rxena(ah);
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+ if (!flush)
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+ ath9k_hw_rxena(ah);
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}
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+
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+ if (!budget--)
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+ break;
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} while (1);
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if (!(ah->imask & ATH9K_INT_RXEOL)) {
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