From d969847c2202f82b3f6755d16909925e64e354e5 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Mon, 1 Mar 2010 13:32:11 +0100 Subject: ath9k: fix rate control tx status handling for A-MPDU Currently the rate control tx status update gets called for every subframe of an A-MPDU, and ath9k marks the frame with the relevant status update with an internal flag. This not suitable for rate control algorithms using the standard mac80211 rate control API, so fix this by using IEEE80211_TX_STAT_AMPDU for marking the correct frames that should be processed. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/rc.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'drivers/net/wireless/ath/ath9k/rc.c') diff --git a/drivers/net/wireless/ath/ath9k/rc.c b/drivers/net/wireless/ath/ath9k/rc.c index 0e79e58cf4c..3c4b5d2d9e1 100644 --- a/drivers/net/wireless/ath/ath9k/rc.c +++ b/drivers/net/wireless/ath/ath9k/rc.c @@ -1226,8 +1226,12 @@ static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband, long_retry = rate->count - 1; } - if (!priv_sta || !ieee80211_is_data(fc) || - !(tx_info->pad[0] & ATH_TX_INFO_UPDATE_RC)) + if (!priv_sta || !ieee80211_is_data(fc)) + return; + + /* This packet was aggregated but doesn't carry status info */ + if ((tx_info->flags & IEEE80211_TX_CTL_AMPDU) && + !(tx_info->flags & IEEE80211_TX_STAT_AMPDU)) return; if (tx_info->flags & IEEE80211_TX_STAT_TX_FILTERED) -- cgit v1.2.3-70-g09d2 From b0a3344834fcaf30e472ccc661c8842281453402 Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Thu, 15 Apr 2010 17:39:39 -0400 Subject: ath9k: add LDPC support LDPC is enabled by the rate control if the its determined that the target peer supports LDPC. We would have already intersected the HT capabilities so if our peer supports LDPC so do we. Signed-off-by: Luis R. Rodriguez Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/init.c | 3 +++ drivers/net/wireless/ath/ath9k/rc.c | 9 +++++++++ drivers/net/wireless/ath/ath9k/xmit.c | 14 ++++++++++---- 3 files changed, 22 insertions(+), 4 deletions(-) (limited to 'drivers/net/wireless/ath/ath9k/rc.c') diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c index 58a87f7931d..5adc2e335cf 100644 --- a/drivers/net/wireless/ath/ath9k/init.c +++ b/drivers/net/wireless/ath/ath9k/init.c @@ -189,6 +189,9 @@ static void setup_ht_cap(struct ath_softc *sc, IEEE80211_HT_CAP_SGI_40 | IEEE80211_HT_CAP_DSSSCCK40; + if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_LDPC) + ht_info->cap |= IEEE80211_HT_CAP_LDPC_CODING; + ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_8; diff --git a/drivers/net/wireless/ath/ath9k/rc.c b/drivers/net/wireless/ath/ath9k/rc.c index 3c4b5d2d9e1..f10bd06dc21 100644 --- a/drivers/net/wireless/ath/ath9k/rc.c +++ b/drivers/net/wireless/ath/ath9k/rc.c @@ -689,6 +689,15 @@ static void ath_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta, rate_table = sc->cur_rate_table; rix = ath_rc_get_highest_rix(sc, ath_rc_priv, rate_table, &is_probe); + /* + * If we're in HT mode and both us and our peer supports LDPC. + * We don't need to check our own device's capabilities as our own + * ht capabilities would have already been intersected with our peer's. + */ + if (conf_is_ht(&sc->hw->conf) && + (sta->ht_cap.cap & IEEE80211_HT_CAP_LDPC_CODING)) + tx_info->flags |= IEEE80211_TX_CTL_LDPC; + if (is_probe) { /* set one try for probe rates. For the * probes don't enable rts */ diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index c2b45030d0b..90e629f276f 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -1483,8 +1483,7 @@ static void assign_aggr_tid_seqno(struct sk_buff *skb, INCR(tid->seq_next, IEEE80211_SEQ_MAX); } -static int setup_tx_flags(struct ath_softc *sc, struct sk_buff *skb, - struct ath_txq *txq) +static int setup_tx_flags(struct sk_buff *skb, bool use_ldpc) { struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); int flags = 0; @@ -1495,6 +1494,9 @@ static int setup_tx_flags(struct ath_softc *sc, struct sk_buff *skb, if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK) flags |= ATH9K_TXDESC_NOACK; + if (use_ldpc) + flags |= ATH9K_TXDESC_LDPC; + return flags; } @@ -1646,6 +1648,7 @@ static int ath_tx_setup_buffer(struct ieee80211_hw *hw, struct ath_buf *bf, int hdrlen; __le16 fc; int padpos, padsize; + bool use_ldpc = false; tx_info->pad[0] = 0; switch (txctl->frame_type) { @@ -1672,10 +1675,13 @@ static int ath_tx_setup_buffer(struct ieee80211_hw *hw, struct ath_buf *bf, bf->bf_frmlen -= padsize; } - if (conf_is_ht(&hw->conf)) + if (conf_is_ht(&hw->conf)) { bf->bf_state.bf_type |= BUF_HT; + if (tx_info->flags & IEEE80211_TX_CTL_LDPC) + use_ldpc = true; + } - bf->bf_flags = setup_tx_flags(sc, skb, txctl->txq); + bf->bf_flags = setup_tx_flags(skb, use_ldpc); bf->bf_keytype = get_hw_crypto_keytype(skb); if (bf->bf_keytype != ATH9K_KEY_TYPE_CLEAR) { -- cgit v1.2.3-70-g09d2 From 58b5190e740241b33fcd901855436aa5d0c5e087 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Mon, 19 Apr 2010 19:57:37 +0200 Subject: ath9k: set the STBC flag in rate control if the peer supports it Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/rc.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/net/wireless/ath/ath9k/rc.c') diff --git a/drivers/net/wireless/ath/ath9k/rc.c b/drivers/net/wireless/ath/ath9k/rc.c index f10bd06dc21..66bc1f6c8cc 100644 --- a/drivers/net/wireless/ath/ath9k/rc.c +++ b/drivers/net/wireless/ath/ath9k/rc.c @@ -698,6 +698,10 @@ static void ath_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta, (sta->ht_cap.cap & IEEE80211_HT_CAP_LDPC_CODING)) tx_info->flags |= IEEE80211_TX_CTL_LDPC; + if (conf_is_ht(&sc->hw->conf) && + (sta->ht_cap.cap & IEEE80211_HT_CAP_TX_STBC)) + tx_info->flags |= (1 << IEEE80211_TX_CTL_STBC_SHIFT); + if (is_probe) { /* set one try for probe rates. For the * probes don't enable rts */ -- cgit v1.2.3-70-g09d2