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ath9k: fix rts/cts handling
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19147 3c298f89-4303-0410-b956-a3cf2f4a3e73
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package/mac80211/patches/570-ath9k_fix_rts_cts.patch
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61
package/mac80211/patches/570-ath9k_fix_rts_cts.patch
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@ -0,0 +1,61 @@
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--- a/drivers/net/wireless/ath/ath9k/xmit.c
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+++ b/drivers/net/wireless/ath/ath9k/xmit.c
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@@ -1498,26 +1498,6 @@ static void ath_buf_set_rate(struct ath_
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if (sc->sc_flags & SC_OP_PREAMBLE_SHORT)
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ctsrate |= rate->hw_value_short;
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- /*
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- * ATH9K_TXDESC_RTSENA and ATH9K_TXDESC_CTSENA are mutually exclusive.
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- * Check the first rate in the series to decide whether RTS/CTS
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- * or CTS-to-self has to be used.
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- */
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- if (rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
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- flags = ATH9K_TXDESC_CTSENA;
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- else if (rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
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- flags = ATH9K_TXDESC_RTSENA;
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-
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- /* FIXME: Handle aggregation protection */
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- if (sc->config.ath_aggr_prot &&
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- (!bf_isaggr(bf) || (bf_isaggr(bf) && bf->bf_al < 8192))) {
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- flags = ATH9K_TXDESC_RTSENA;
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- }
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-
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- /* For AR5416 - RTS cannot be followed by a frame larger than 8K */
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- if (bf_isaggr(bf) && (bf->bf_al > sc->sc_ah->caps.rts_aggr_limit))
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- flags &= ~(ATH9K_TXDESC_RTSENA);
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-
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for (i = 0; i < 4; i++) {
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bool is_40, is_sgi, is_sp;
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int phy;
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@@ -1529,8 +1509,15 @@ static void ath_buf_set_rate(struct ath_
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series[i].Tries = rates[i].count;
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series[i].ChSel = common->tx_chainmask;
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- if (rates[i].flags & IEEE80211_TX_RC_USE_RTS_CTS)
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+ if ((sc->config.ath_aggr_prot && bf_isaggr(bf)) ||
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+ (rates[i].flags & IEEE80211_TX_RC_USE_RTS_CTS)) {
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series[i].RateFlags |= ATH9K_RATESERIES_RTS_CTS;
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+ flags |= ATH9K_TXDESC_RTSENA;
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+ } else if (rates[i].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
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+ series[i].RateFlags |= ATH9K_RATESERIES_RTS_CTS;
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+ flags |= ATH9K_TXDESC_CTSENA;
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+ }
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+
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if (rates[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
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series[i].RateFlags |= ATH9K_RATESERIES_2040;
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if (rates[i].flags & IEEE80211_TX_RC_SHORT_GI)
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@@ -1568,6 +1555,14 @@ static void ath_buf_set_rate(struct ath_
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phy, rate->bitrate * 100, bf->bf_frmlen, rix, is_sp);
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}
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+ /* For AR5416 - RTS cannot be followed by a frame larger than 8K */
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+ if (bf_isaggr(bf) && (bf->bf_al > sc->sc_ah->caps.rts_aggr_limit))
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+ flags &= ~ATH9K_TXDESC_RTSENA;
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+
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+ /* ATH9K_TXDESC_RTSENA and ATH9K_TXDESC_CTSENA are mutually exclusive. */
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+ if (flags & ATH9K_TXDESC_RTSENA)
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+ flags &= ~ATH9K_TXDESC_CTSENA;
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+
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/* set dur_update_en for l-sig computation except for PS-Poll frames */
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ath9k_hw_set11n_ratescenario(sc->sc_ah, bf->bf_desc,
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bf->bf_lastbf->bf_desc,
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