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author | Felix Fietkau <nbd@nbd.name> | 2016-10-08 13:53:14 +0200 |
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committer | Felix Fietkau <nbd@nbd.name> | 2016-10-13 17:06:03 +0200 |
commit | ad51e09fd1301484820a466a49447a34d7504882 (patch) | |
tree | 06d56b89cf8709b0e9ca63528f8efc411089ddf5 /package/kernel/mac80211/patches/302-ath9k-limit-retries-for-powersave-response-frames.patch | |
parent | 4379bcb1b4b73fb8487a14bec9554a17d4726e35 (diff) | |
download | upstream-ad51e09fd1301484820a466a49447a34d7504882.tar.gz upstream-ad51e09fd1301484820a466a49447a34d7504882.tar.bz2 upstream-ad51e09fd1301484820a466a49447a34d7504882.zip |
mac80211: update to wireless-testing 2016-10-08
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'package/kernel/mac80211/patches/302-ath9k-limit-retries-for-powersave-response-frames.patch')
-rw-r--r-- | package/kernel/mac80211/patches/302-ath9k-limit-retries-for-powersave-response-frames.patch | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/302-ath9k-limit-retries-for-powersave-response-frames.patch b/package/kernel/mac80211/patches/302-ath9k-limit-retries-for-powersave-response-frames.patch new file mode 100644 index 0000000000..8c19ea22f4 --- /dev/null +++ b/package/kernel/mac80211/patches/302-ath9k-limit-retries-for-powersave-response-frames.patch @@ -0,0 +1,96 @@ +From: Felix Fietkau <nbd@openwrt.org> +Date: Thu, 2 Jul 2015 15:20:56 +0200 +Subject: [PATCH] ath9k: limit retries for powersave response frames + +In some cases, the channel might be busy enough that an ath9k AP's +response to PS-Poll frames might be too slow and the station has already +gone to sleep. To avoid wasting too much airtime on this, limit the +number of retries on such frames and ensure that no sample rate gets +used. + +Signed-off-by: Felix Fietkau <nbd@openwrt.org> +--- + +--- a/drivers/net/wireless/ath/ath9k/xmit.c ++++ b/drivers/net/wireless/ath/ath9k/xmit.c +@@ -177,10 +177,25 @@ static void ath_send_bar(struct ath_atx_ + } + + static void ath_set_rates(struct ieee80211_vif *vif, struct ieee80211_sta *sta, +- struct ath_buf *bf) ++ struct ath_buf *bf, bool ps) + { ++ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(bf->bf_mpdu); ++ ++ if (ps) { ++ /* Clear the first rate to avoid using a sample rate for PS frames */ ++ info->control.rates[0].idx = -1; ++ info->control.rates[0].count = 0; ++ } ++ + ieee80211_get_tx_rates(vif, sta, bf->bf_mpdu, bf->rates, + ARRAY_SIZE(bf->rates)); ++ if (!ps) ++ return; ++ ++ if (bf->rates[0].count > 2) ++ bf->rates[0].count = 2; ++ ++ bf->rates[1].idx = -1; + } + + static void ath_txq_skb_done(struct ath_softc *sc, struct ath_txq *txq, +@@ -1462,7 +1477,7 @@ ath_tx_form_burst(struct ath_softc *sc, + break; + } + +- ath_set_rates(tid->an->vif, tid->an->sta, bf); ++ ath_set_rates(tid->an->vif, tid->an->sta, bf, false); + } while (1); + } + +@@ -1493,7 +1508,7 @@ static bool ath_tx_sched_aggr(struct ath + return false; + } + +- ath_set_rates(tid->an->vif, tid->an->sta, bf); ++ ath_set_rates(tid->an->vif, tid->an->sta, bf, false); + if (aggr) + aggr_len = ath_tx_form_aggr(sc, txq, tid, &bf_q, bf); + else +@@ -1651,7 +1666,7 @@ void ath9k_release_buffered_frames(struc + break; + + list_add_tail(&bf->list, &bf_q); +- ath_set_rates(tid->an->vif, tid->an->sta, bf); ++ ath_set_rates(tid->an->vif, tid->an->sta, bf, true); + if (bf_isampdu(bf)) { + ath_tx_addto_baw(sc, tid, bf); + bf->bf_state.bf_type &= ~BUF_AGGR; +@@ -2343,7 +2358,7 @@ int ath_tx_start(struct ieee80211_hw *hw + if (txctl->paprd) + bf->bf_state.bfs_paprd_timestamp = jiffies; + +- ath_set_rates(vif, sta, bf); ++ ath_set_rates(vif, sta, bf, ps_resp); + ath_tx_send_normal(sc, txq, tid, skb); + + out: +@@ -2382,7 +2397,7 @@ void ath_tx_cabq(struct ieee80211_hw *hw + break; + + bf->bf_lastbf = bf; +- ath_set_rates(vif, NULL, bf); ++ ath_set_rates(vif, NULL, bf, false); + ath_buf_set_rate(sc, bf, &info, fi->framelen, false); + duration += info.rates[0].PktDuration; + if (bf_tail) +@@ -2898,7 +2913,7 @@ int ath9k_tx99_send(struct ath_softc *sc + return -EINVAL; + } + +- ath_set_rates(sc->tx99_vif, NULL, bf); ++ ath_set_rates(sc->tx99_vif, NULL, bf, false); + + ath9k_hw_set_desc_link(sc->sc_ah, bf->bf_desc, bf->bf_daddr); + ath9k_hw_tx99_start(sc->sc_ah, txctl->txq->axq_qnum); |