diff options
| author | Luis R. Rodriguez <lrodriguez@atheros.com> | 2008-12-23 15:58:38 -0800 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-01-29 15:59:28 -0500 |
| commit | 96742256aba8c458d49af42610557977245be82d (patch) | |
| tree | 5eef9aae2a70bf76fa39758837566e3c1ac0cafc /drivers/net/wireless/ath9k/xmit.c | |
| parent | 030bb495c0c34aa74903ab8cf9c35e4f2f0aedea (diff) | |
| download | lwn-96742256aba8c458d49af42610557977245be82d.tar.gz lwn-96742256aba8c458d49af42610557977245be82d.zip | |
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 <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath9k/xmit.c')
| -rw-r--r-- | drivers/net/wireless/ath9k/xmit.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/net/wireless/ath9k/xmit.c b/drivers/net/wireless/ath9k/xmit.c index c92f0c6e4adc..3e192fd9591c 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; } |