From 96742256aba8c458d49af42610557977245be82d Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Tue, 23 Dec 2008 15:58:38 -0800 Subject: [PATCH] ath9k: remove cache of rate preference when using 11g protection No need to cache when we want to use 2Mbit/s for all protection frames for 802.11g as we can determine that dynamically on ath_buf_set_rate() itself. Signed-off-by: Luis R. Rodriguez Signed-off-by: John W. Linville --- drivers/net/wireless/ath9k/core.h | 1 - drivers/net/wireless/ath9k/main.c | 13 +++---------- drivers/net/wireless/ath9k/xmit.c | 13 ++++++++++--- 3 files changed, 13 insertions(+), 14 deletions(-) diff --git a/drivers/net/wireless/ath9k/core.h b/drivers/net/wireless/ath9k/core.h index 4ca2aed..2bb35dd 100644 --- a/drivers/net/wireless/ath9k/core.h +++ b/drivers/net/wireless/ath9k/core.h @@ -718,7 +718,6 @@ struct ath_softc { u32 sc_keymax; DECLARE_BITMAP(sc_keymap, ATH_KEYMAX); u8 sc_splitmic; - u8 sc_protrix; enum ath9k_int sc_imask; enum PROT_MODE sc_protmode; enum ath9k_ht_extprotspacing sc_ht_extprotspacing; diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c index 699d248..e26a9a6 100644 --- a/drivers/net/wireless/ath9k/main.c +++ b/drivers/net/wireless/ath9k/main.c @@ -61,12 +61,6 @@ static void bus_read_cachesize(struct ath_softc *sc, int *csz) static void ath_setcurmode(struct ath_softc *sc, struct ieee80211_conf *conf) { - /* - * All protection frames are transmited at 2Mb/s for - * 11g, otherwise at 1Mb/s. - * XXX select protection rate index from rate table. - */ - sc->sc_protrix = 0; switch (conf->channel->band) { case IEEE80211_BAND_2GHZ: if (conf_is_ht20(conf)) @@ -78,11 +72,9 @@ static void ath_setcurmode(struct ath_softc *sc, struct ieee80211_conf *conf) else if (conf_is_ht40_plus(conf)) sc->cur_rate_table = sc->hw_rate_table[ATH9K_MODE_11NG_HT40PLUS]; - else { - sc->sc_protrix = 1; + else sc->cur_rate_table = sc->hw_rate_table[ATH9K_MODE_11G]; - } break; case IEEE80211_BAND_5GHZ: if (conf_is_ht20(conf)) @@ -95,7 +87,8 @@ static void ath_setcurmode(struct ath_softc *sc, struct ieee80211_conf *conf) sc->cur_rate_table = sc->hw_rate_table[ATH9K_MODE_11NA_HT40PLUS]; else - sc->cur_rate_table = sc->hw_rate_table[ATH9K_MODE_11A]; + sc->cur_rate_table = + sc->hw_rate_table[ATH9K_MODE_11A]; break; default: break; diff --git a/drivers/net/wireless/ath9k/xmit.c b/drivers/net/wireless/ath9k/xmit.c index c92f0c6..3e192fd 100644 --- a/drivers/net/wireless/ath9k/xmit.c +++ b/drivers/net/wireless/ath9k/xmit.c @@ -546,7 +546,8 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf) struct ieee80211_tx_info *tx_info; struct ieee80211_tx_rate *rates; struct ieee80211_hdr *hdr; - int i, flags, rtsctsena = 0; + struct ieee80211_hw *hw = sc->hw; + int i, flags, rtsctsena = 0, enable_g_protection = 0; u32 ctsduration = 0; u8 rix = 0, cix, ctsrate = 0; __le16 fc; @@ -578,6 +579,12 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf) flags = (bf->bf_flags & (ATH9K_TXDESC_RTSENA | ATH9K_TXDESC_CTSENA)); cix = rt->info[rix].ctrl_rate; + /* All protection frames are transmited at 2Mb/s for 802.11g, + * otherwise we transmit them at 1Mb/s */ + if (hw->conf.channel->band == IEEE80211_BAND_2GHZ && + !conf_is_ht(&hw->conf)) + enable_g_protection = 1; + /* * If 802.11g protection is enabled, determine whether to use RTS/CTS or * just CTS. Note that this is only done for OFDM/HT unicast frames. @@ -590,7 +597,7 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf) else if (sc->sc_protmode == PROT_M_CTSONLY) flags = ATH9K_TXDESC_CTSENA; - cix = rt->info[sc->sc_protrix].ctrl_rate; + cix = rt->info[enable_g_protection].ctrl_rate; rtsctsena = 1; } @@ -608,7 +615,7 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf) if (sc->sc_config.ath_aggr_prot && (!bf_isaggr(bf) || (bf_isaggr(bf) && bf->bf_al < 8192))) { flags = ATH9K_TXDESC_RTSENA; - cix = rt->info[sc->sc_protrix].ctrl_rate; + cix = rt->info[enable_g_protection].ctrl_rate; rtsctsena = 1; } -- 2.7.4