mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-11 12:51:54 +02:00
83 lines
2.9 KiB
Diff
83 lines
2.9 KiB
Diff
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--- a/drivers/net/wireless/ath/ath5k/ath5k.h
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+++ b/drivers/net/wireless/ath/ath5k/ath5k.h
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@@ -1233,7 +1233,7 @@ int ath5k_eeprom_read_mac(struct ath5k_h
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/* Protocol Control Unit Functions */
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/* Helpers */
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int ath5k_hw_get_frame_duration(struct ath5k_hw *ah,
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- int len, struct ieee80211_rate *rate);
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+ int len, struct ieee80211_rate *rate, bool shortpre);
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unsigned int ath5k_hw_get_default_slottime(struct ath5k_hw *ah);
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unsigned int ath5k_hw_get_default_sifs(struct ath5k_hw *ah);
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extern int ath5k_hw_set_opmode(struct ath5k_hw *ah, enum nl80211_iftype opmode);
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--- a/drivers/net/wireless/ath/ath5k/pcu.c
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+++ b/drivers/net/wireless/ath/ath5k/pcu.c
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@@ -75,7 +75,7 @@ static const unsigned int ack_rates_high
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* bwmodes.
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*/
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int ath5k_hw_get_frame_duration(struct ath5k_hw *ah,
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- int len, struct ieee80211_rate *rate)
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+ int len, struct ieee80211_rate *rate, bool shortpre)
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{
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struct ath5k_softc *sc = ah->ah_sc;
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int sifs, preamble, plcp_bits, sym_time;
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@@ -84,9 +84,15 @@ int ath5k_hw_get_frame_duration(struct a
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/* Fallback */
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if (!ah->ah_bwmode) {
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- dur = ieee80211_generic_frame_duration(sc->hw,
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- NULL, len, rate);
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- return le16_to_cpu(dur);
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+ __le16 raw_dur = ieee80211_generic_frame_duration(sc->hw,
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+ NULL, len, rate);
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+
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+ /* subtract difference between long and short preamble */
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+ dur = le16_to_cpu(raw_dur);
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+ if (shortpre)
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+ dur -= 96;
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+
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+ return dur;
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}
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bitrate = rate->bitrate;
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@@ -263,27 +269,14 @@ static inline void ath5k_hw_write_rate_d
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* actual rate for this rate. See mac80211 tx.c
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* ieee80211_duration() for a brief description of
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* what rate we should choose to TX ACKs. */
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- tx_time = ath5k_hw_get_frame_duration(ah, 10, rate);
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+ tx_time = ath5k_hw_get_frame_duration(ah, 10, rate, false);
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ath5k_hw_reg_write(ah, tx_time, reg);
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if (!(rate->flags & IEEE80211_RATE_SHORT_PREAMBLE))
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continue;
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- /*
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- * We're not distinguishing short preamble here,
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- * This is true, all we'll get is a longer value here
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- * which is not necessarilly bad. We could use
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- * export ieee80211_frame_duration() but that needs to be
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- * fixed first to be properly used by mac802111 drivers:
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- *
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- * - remove erp stuff and let the routine figure ofdm
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- * erp rates
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- * - remove passing argument ieee80211_local as
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- * drivers don't have access to it
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- * - move drivers using ieee80211_generic_frame_duration()
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- * to this
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- */
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+ tx_time = ath5k_hw_get_frame_duration(ah, 10, rate, true);
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ath5k_hw_reg_write(ah, tx_time,
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reg + (AR5K_SET_SHORT_PREAMBLE << 2));
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}
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--- a/drivers/net/wireless/ath/ath5k/qcu.c
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+++ b/drivers/net/wireless/ath/ath5k/qcu.c
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@@ -550,7 +550,7 @@ int ath5k_hw_set_ifs_intervals(struct at
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else
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rate = &sc->sbands[IEEE80211_BAND_2GHZ].bitrates[0];
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- ack_tx_time = ath5k_hw_get_frame_duration(ah, 10, rate);
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+ ack_tx_time = ath5k_hw_get_frame_duration(ah, 10, rate, false);
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/* ack_tx_time includes an SIFS already */
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eifs = ack_tx_time + sifs + 2 * slot_time;
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