X-Git-Url: http://git.openwrt.org/?a=blobdiff_plain;f=package%2Fmac80211%2Fpatches%2F560-minstrel_ht.patch;h=c51d541fbb9ed3379cbd7a70c2b895fd4cb5a627;hb=9797b6ea4302eedaa3a0fd3c71841c037c9a78fa;hp=bc50ca67e27b66deb4f46122ed9e5f62ffc1590b;hpb=d5addb90c4fe370edc37babff27f5a30f8e70319;p=openwrt%2Fsvn-archive%2Farchive.git

diff --git a/package/mac80211/patches/560-minstrel_ht.patch b/package/mac80211/patches/560-minstrel_ht.patch
index bc50ca67e2..c51d541fbb 100644
--- a/package/mac80211/patches/560-minstrel_ht.patch
+++ b/package/mac80211/patches/560-minstrel_ht.patch
@@ -68,7 +68,7 @@
  
 --- /dev/null
 +++ b/net/mac80211/rc80211_minstrel_ht.c
-@@ -0,0 +1,800 @@
+@@ -0,0 +1,815 @@
 +/*
 + * Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
 + *
@@ -262,6 +262,14 @@
 +	int cur_prob, cur_prob_tp, cur_tp, cur_tp2;
 +	int group, i, index;
 +
++	if (mi->ampdu_packets > 0) {
++		mi->avg_ampdu_len = minstrel_ewma(mi->avg_ampdu_len,
++			MINSTREL_FRAC(mi->ampdu_len, mi->ampdu_packets), EWMA_LEVEL);
++		mi->ampdu_len = 0;
++		mi->ampdu_packets = 0;
++	}
++
++	mi->sample_slow = 0;
 +	mi->sample_count = 0;
 +	mi->max_tp_rate = 0;
 +	mi->max_tp_rate2 = 0;
@@ -414,6 +422,25 @@
 +	}
 +}
 +
++static void
++minstrel_aggr_check(struct minstrel_priv *mp, struct ieee80211_sta *pubsta, struct sk_buff *skb)
++{
++	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
++	struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
++	u16 tid;
++
++	if (unlikely(!ieee80211_is_data_qos(hdr->frame_control)))
++		return;
++
++	if (unlikely(skb->protocol == cpu_to_be16(ETH_P_PAE)))
++		return;
++
++	tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
++	if (likely(sta->ampdu_mlme.tid_state_tx[tid] != HT_AGG_STATE_IDLE))
++		return;
++
++	ieee80211_start_tx_ba_session(pubsta, tid);
++}
 +
 +static void
 +minstrel_ht_tx_status(void *priv, struct ieee80211_supported_band *sband,
@@ -443,8 +470,8 @@
 +		info->status.ampdu_len = 1;
 +	}
 +
-+	mi->avg_ampdu_len = minstrel_ewma(mi->avg_ampdu_len,
-+		MINSTREL_FRAC(info->status.ampdu_len, 1), 90);
++	mi->ampdu_packets++;
++	mi->ampdu_len += info->status.ampdu_len;
 +
 +	if (!mi->sample_wait && !mi->sample_tries && mi->sample_count > 0) {
 +		mi->sample_wait = 4 + MINSTREL_TRUNC(mi->avg_ampdu_len);
@@ -478,17 +505,21 @@
 +	 * downgrade to a lower number of streams if necessary.
 +	 */
 +	rate = minstrel_get_ratestats(mi, mi->max_tp_rate);
-+	if (MINSTREL_FRAC(rate->success, rate->attempts) <
-+	    MINSTREL_FRAC(20, 100) && rate->attempts > 30)
++	if (rate->attempts > 30 &&
++	    MINSTREL_FRAC(rate->success, rate->attempts) <
++	    MINSTREL_FRAC(20, 100))
 +		minstrel_downgrade_rate(mi, &mi->max_tp_rate, true);
 +
 +	rate2 = minstrel_get_ratestats(mi, mi->max_tp_rate2);
-+	if (MINSTREL_FRAC(rate->success, rate->attempts) <
-+	    MINSTREL_FRAC(20, 100) && rate->attempts > 30)
++	if (rate->attempts > 30 &&
++	    MINSTREL_FRAC(rate->success, rate->attempts) <
++	    MINSTREL_FRAC(20, 100))
 +		minstrel_downgrade_rate(mi, &mi->max_tp_rate2, false);
 +
-+	if (time_after(jiffies, mi->stats_update + (mp->update_interval / 2 * HZ) / 1000))
++	if (time_after(jiffies, mi->stats_update + (mp->update_interval / 2 * HZ) / 1000)) {
 +		minstrel_ht_update_stats(mp, mi);
++		minstrel_aggr_check(mp, sta, skb);
++	}
 +}
 +
 +static void
@@ -542,7 +573,9 @@
 +	if (!mr->retry_updated)
 +		minstrel_calc_retransmit(mp, mi, index);
 +
-+	if (rtscts)
++	if (mr->probability < MINSTREL_FRAC(20, 100))
++		rate->count = 2;
++	else if (rtscts)
 +		rate->count = mr->retry_count_rtscts;
 +	else
 +		rate->count = mr->retry_count;
@@ -595,9 +628,13 @@
 +	 * if the link is working perfectly.
 +	 */
 +	if (minstrel_get_duration(sample_idx) >
-+	    minstrel_get_duration(mi->max_tp_rate) &&
-+	    mr->sample_skipped < 10)
-+		goto next;
++	    minstrel_get_duration(mi->max_tp_rate)) {
++		if (mr->sample_skipped < 10)
++			goto next;
++
++		if (mi->sample_slow++ > 2)
++			goto next;
++	}
 +
 +	return sample_idx;
 +
@@ -607,26 +644,6 @@
 +}
 +
 +static void
-+minstrel_aggr_check(struct minstrel_priv *mp, struct ieee80211_sta *pubsta, struct sk_buff *skb)
-+{
-+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
-+	struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
-+	u16 tid;
-+
-+	if (unlikely(!ieee80211_is_data_qos(hdr->frame_control)))
-+		return;
-+
-+	if (unlikely(skb->protocol == cpu_to_be16(ETH_P_PAE)))
-+		return;
-+
-+	tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
-+	if (likely(sta->ampdu_mlme.tid_state_tx[tid] != HT_AGG_STATE_IDLE))
-+		return;
-+
-+	ieee80211_start_tx_ba_session(pubsta, tid);
-+}
-+
-+static void
 +minstrel_ht_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
 +                     struct ieee80211_tx_rate_control *txrc)
 +{
@@ -643,8 +660,6 @@
 +	if (!msp->is_ht)
 +		return mac80211_minstrel.get_rate(priv, sta, &msp->legacy, txrc);
 +
-+	minstrel_aggr_check(mp, sta, txrc->skb);
-+
 +	sample_idx = minstrel_get_sample_rate(mp, mi);
 +	if (sample_idx >= 0) {
 +		minstrel_ht_set_rate(mp, mi, &ar[0], sample_idx,
@@ -871,7 +886,7 @@
 +}
 --- /dev/null
 +++ b/net/mac80211/rc80211_minstrel_ht.h
-@@ -0,0 +1,120 @@
+@@ -0,0 +1,125 @@
 +/*
 + * Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
 + *
@@ -942,7 +957,11 @@
 +};
 +
 +struct minstrel_ht_sta {
-+	/* ampdu length average (EWMA) */
++	/* ampdu length (average, per sampling interval) */
++	unsigned int ampdu_len;
++	unsigned int ampdu_packets;
++
++	/* ampdu length (EWMA) */
 +	unsigned int avg_ampdu_len;
 +
 +	/* best throughput rate */
@@ -967,6 +986,7 @@
 +	u8 sample_wait;
 +	u8 sample_tries;
 +	u8 sample_count;
++	u8 sample_slow;
 +
 +	/* current MCS group to be sampled */
 +	u8 sample_group;
@@ -1054,7 +1074,7 @@
 +			struct minstrel_rate_stats *mr = &mi->groups[i].rates[j];
 +			int idx = i * MCS_GROUP_RATES + j;
 +
-+			if (!mi->groups[i].supported & BIT(j))
++			if (!(mi->groups[i].supported & BIT(j)))
 +				continue;
 +
 +			p += sprintf(p, "HT%c0/%cGI ", htmode, gimode);