From 868caae3fe2e35e2353d86af95e03eeaa9439d97 Mon Sep 17 00:00:00 2001 From: Sujith Manoharan Date: Tue, 21 Oct 2014 19:23:02 +0530 Subject: ath9k: Enable HW queue control only for MCC Enabling HW queue control for normal (non-mcc) mode causes problems with queue management, resulting in traffic stall. Since it is mainly required for fairness in MCC mode, disable it for the general case. Bug: https://dev.openwrt.org/ticket/18164 Cc: Felix Fietkau Signed-off-by: Sujith Manoharan Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/init.c | 55 +++++++++++++++++++---------------- drivers/net/wireless/ath/ath9k/main.c | 3 ++ drivers/net/wireless/ath/ath9k/xmit.c | 10 +++++-- 3 files changed, 41 insertions(+), 27 deletions(-) (limited to 'drivers/net/wireless/ath') diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c index 156a944134dc..3bd030494986 100644 --- a/drivers/net/wireless/ath/ath9k/init.c +++ b/drivers/net/wireless/ath/ath9k/init.c @@ -734,6 +734,32 @@ static const struct ieee80211_iface_combination if_comb[] = { #endif }; +#ifdef CONFIG_ATH9K_CHANNEL_CONTEXT +static void ath9k_set_mcc_capab(struct ath_softc *sc, struct ieee80211_hw *hw) +{ + struct ath_hw *ah = sc->sc_ah; + struct ath_common *common = ath9k_hw_common(ah); + + if (!ath9k_is_chanctx_enabled()) + return; + + hw->flags |= IEEE80211_HW_QUEUE_CONTROL; + hw->queues = ATH9K_NUM_TX_QUEUES; + hw->offchannel_tx_hw_queue = hw->queues - 1; + hw->wiphy->interface_modes &= ~ BIT(NL80211_IFTYPE_WDS); + hw->wiphy->iface_combinations = if_comb_multi; + hw->wiphy->n_iface_combinations = ARRAY_SIZE(if_comb_multi); + hw->wiphy->max_scan_ssids = 255; + hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; + hw->wiphy->max_remain_on_channel_duration = 10000; + hw->chanctx_data_size = sizeof(void *); + hw->extra_beacon_tailroom = + sizeof(struct ieee80211_p2p_noa_attr) + 9; + + ath_dbg(common, CHAN_CTX, "Use channel contexts\n"); +} +#endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */ + static void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw) { struct ath_hw *ah = sc->sc_ah; @@ -746,7 +772,6 @@ static void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw) IEEE80211_HW_SPECTRUM_MGMT | IEEE80211_HW_REPORTS_TX_ACK_STATUS | IEEE80211_HW_SUPPORTS_RC_TABLE | - IEEE80211_HW_QUEUE_CONTROL | IEEE80211_HW_SUPPORTS_HT_CCK_RATES; if (ath9k_ps_enable) @@ -781,24 +806,6 @@ static void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw) hw->wiphy->n_iface_combinations = ARRAY_SIZE(if_comb); } -#ifdef CONFIG_ATH9K_CHANNEL_CONTEXT - - if (ath9k_is_chanctx_enabled()) { - hw->wiphy->interface_modes &= ~ BIT(NL80211_IFTYPE_WDS); - hw->wiphy->iface_combinations = if_comb_multi; - hw->wiphy->n_iface_combinations = ARRAY_SIZE(if_comb_multi); - hw->wiphy->max_scan_ssids = 255; - hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; - hw->wiphy->max_remain_on_channel_duration = 10000; - hw->chanctx_data_size = sizeof(void *); - hw->extra_beacon_tailroom = - sizeof(struct ieee80211_p2p_noa_attr) + 9; - - ath_dbg(common, CHAN_CTX, "Use channel contexts\n"); - } - -#endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */ - hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; @@ -808,12 +815,7 @@ static void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw) hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; - /* allow 4 queues per channel context + - * 1 cab queue + 1 offchannel tx queue - */ - hw->queues = ATH9K_NUM_TX_QUEUES; - /* last queue for offchannel */ - hw->offchannel_tx_hw_queue = hw->queues - 1; + hw->queues = 4; hw->max_rates = 4; hw->max_listen_interval = 10; hw->max_rate_tries = 10; @@ -837,6 +839,9 @@ static void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw) hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &common->sbands[IEEE80211_BAND_5GHZ]; +#ifdef CONFIG_ATH9K_CHANNEL_CONTEXT + ath9k_set_mcc_capab(sc, hw); +#endif ath9k_init_wow(hw); ath9k_cmn_reload_chainmask(ah); diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index 6f6a974f7fdb..30c66dfcd7a0 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -1162,6 +1162,9 @@ static void ath9k_assign_hw_queues(struct ieee80211_hw *hw, { int i; + if (!ath9k_is_chanctx_enabled()) + return; + for (i = 0; i < IEEE80211_NUM_ACS; i++) vif->hw_queue[i] = i; diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index 493a183d0aaf..d6e54a3c88f6 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -169,7 +169,10 @@ static void ath_txq_skb_done(struct ath_softc *sc, struct ath_txq *txq, if (txq->stopped && txq->pending_frames < sc->tx.txq_max_pending[q]) { - ieee80211_wake_queue(sc->hw, info->hw_queue); + if (ath9k_is_chanctx_enabled()) + ieee80211_wake_queue(sc->hw, info->hw_queue); + else + ieee80211_wake_queue(sc->hw, q); txq->stopped = false; } } @@ -2247,7 +2250,10 @@ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb, fi->txq = q; if (++txq->pending_frames > sc->tx.txq_max_pending[q] && !txq->stopped) { - ieee80211_stop_queue(sc->hw, info->hw_queue); + if (ath9k_is_chanctx_enabled()) + ieee80211_stop_queue(sc->hw, info->hw_queue); + else + ieee80211_stop_queue(sc->hw, q); txq->stopped = true; } } -- cgit v1.2.3 From 94e05900770c0abe31200881df93e41d296fe8bd Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Wed, 22 Oct 2014 15:27:53 +0200 Subject: ath: use CTL region from cfg80211 if unset in EEPROM Many AP devices do not have the proper regulatory domain programmed in EEPROM. Instead they expect the software to set the appropriate region. For these devices, the country code defaults to US, and the driver uses the US CTL tables as well. On devices bought in Europe this can lead to tx power being set too high on the band edges, even if the cfg80211 regdomain is set correctly. Fix this issue by taking into account the DFS region, but only when the EEPROM regdomain is set to default. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath.h | 1 + drivers/net/wireless/ath/regd.c | 14 ++++++++++++++ 2 files changed, 15 insertions(+) (limited to 'drivers/net/wireless/ath') diff --git a/drivers/net/wireless/ath/ath.h b/drivers/net/wireless/ath/ath.h index e5ba6faf3281..86907e5ba6ca 100644 --- a/drivers/net/wireless/ath/ath.h +++ b/drivers/net/wireless/ath/ath.h @@ -80,6 +80,7 @@ struct reg_dmn_pair_mapping { struct ath_regulatory { char alpha2[2]; + enum nl80211_dfs_regions region; u16 country_code; u16 max_power_level; u16 current_rd; diff --git a/drivers/net/wireless/ath/regd.c b/drivers/net/wireless/ath/regd.c index 415393dfb6fc..06ea6cc9e30a 100644 --- a/drivers/net/wireless/ath/regd.c +++ b/drivers/net/wireless/ath/regd.c @@ -515,6 +515,7 @@ void ath_reg_notifier_apply(struct wiphy *wiphy, if (!request) return; + reg->region = request->dfs_region; switch (request->initiator) { case NL80211_REGDOM_SET_BY_CORE: /* @@ -779,6 +780,19 @@ u32 ath_regd_get_band_ctl(struct ath_regulatory *reg, return SD_NO_CTL; } + if (ath_regd_get_eepromRD(reg) == CTRY_DEFAULT) { + switch (reg->region) { + case NL80211_DFS_FCC: + return CTL_FCC; + case NL80211_DFS_ETSI: + return CTL_ETSI; + case NL80211_DFS_JP: + return CTL_MKK; + default: + break; + } + } + switch (band) { case IEEE80211_BAND_2GHZ: return reg->regpair->reg_2ghz_ctl; -- cgit v1.2.3 From 763254516187015cb5b391553af35c6ed1f4bb36 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Wed, 22 Oct 2014 18:17:35 +0200 Subject: ath9k_common: always update value in ath9k_cmn_update_txpow In some cases the limit may be the same as reg->power_limit, but the actual value that the hardware uses is not up to date. In that case, a wrong value for current tx power is tracked internally. Fix this by unconditionally updating it. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/common.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/net/wireless/ath') diff --git a/drivers/net/wireless/ath/ath9k/common.c b/drivers/net/wireless/ath/ath9k/common.c index c6dd7f1fed65..33b0c7aef2ea 100644 --- a/drivers/net/wireless/ath/ath9k/common.c +++ b/drivers/net/wireless/ath/ath9k/common.c @@ -368,11 +368,11 @@ void ath9k_cmn_update_txpow(struct ath_hw *ah, u16 cur_txpow, { struct ath_regulatory *reg = ath9k_hw_regulatory(ah); - if (reg->power_limit != new_txpow) { + if (reg->power_limit != new_txpow) ath9k_hw_set_txpowerlimit(ah, new_txpow, false); - /* read back in case value is clamped */ - *txpower = reg->max_power_level; - } + + /* read back in case value is clamped */ + *txpower = reg->max_power_level; } EXPORT_SYMBOL(ath9k_cmn_update_txpow); -- cgit v1.2.3 From a017ff755e43de9a3221d4ff4f03184ea7b93733 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 29 Oct 2014 18:48:05 +0300 Subject: ath9k: fix some debugfs output The right shift operation has higher precedence than the mask so we left shift by "(i * 3)" and then immediately right shift by "(i * 3)" then we mask. It should be left shift, mask, and then right shift. Signed-off-by: Dan Carpenter Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/debug.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/wireless/ath') diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c index 46f20a309b5f..5c45e787814e 100644 --- a/drivers/net/wireless/ath/ath9k/debug.c +++ b/drivers/net/wireless/ath/ath9k/debug.c @@ -455,7 +455,7 @@ static ssize_t read_file_dma(struct file *file, char __user *user_buf, "%2d %2x %1x %2x %2x\n", i, (*qcuBase & (0x7 << qcuOffset)) >> qcuOffset, (*qcuBase & (0x8 << qcuOffset)) >> (qcuOffset + 3), - val[2] & (0x7 << (i * 3)) >> (i * 3), + (val[2] & (0x7 << (i * 3))) >> (i * 3), (*dcuBase & (0x1f << dcuOffset)) >> dcuOffset); } -- cgit v1.2.3