mac80211: update to wireless-testing 2011-09-14

SVN-Revision: 28245

1 files changed, 167 insertions, 0 deletions

diff --git a/package/mac80211/patches/560-minstrel_ht_optimize.patch b/package/mac80211/patches/560-minstrel_ht_optimize.patch
new file mode 100644
index 0000000..d27ca59
--- /dev/null
+++ b/package/mac80211/patches/560-minstrel_ht_optimize.patch
@@ -0,0 +1,167 @@
+--- a/net/mac80211/rc80211_minstrel_ht.h
++++ b/net/mac80211/rc80211_minstrel_ht.h
+@@ -70,6 +70,8 @@ struct minstrel_mcs_group_data {
+ };
+ 
+ struct minstrel_ht_sta {
++	struct ieee80211_tx_rate tx_rates[3];
++
+ 	/* ampdu length (average, per sampling interval) */
+ 	unsigned int ampdu_len;
+ 	unsigned int ampdu_packets;
+--- a/net/mac80211/rc80211_minstrel_ht.c
++++ b/net/mac80211/rc80211_minstrel_ht.c
+@@ -87,6 +87,10 @@ const struct mcs_group minstrel_mcs_grou
+ 
+ static u8 sample_table[SAMPLE_COLUMNS][MCS_GROUP_RATES];
+ 
++static void
++minstrel_ht_set_rate(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
++                     struct ieee80211_tx_rate *rate, int index,
++                     bool sample, bool rtscts);
+ /*
+  * Perform EWMA (Exponentially Weighted Moving Average) calculation
+  */
+@@ -174,6 +178,17 @@ minstrel_ht_calc_tp(struct minstrel_priv
+ 	mr->cur_tp = MINSTREL_TRUNC((1000000 / usecs) * mr->probability);
+ }
+ 
++static void
++minstrel_ht_update_rates(struct minstrel_priv *mp, struct minstrel_ht_sta *mi)
++{
++	minstrel_ht_set_rate(mp, mi, &mi->tx_rates[0], mi->max_tp_rate,
++			     false, false);
++	minstrel_ht_set_rate(mp, mi, &mi->tx_rates[1], mi->max_tp_rate2,
++			     false, true);
++	minstrel_ht_set_rate(mp, mi, &mi->tx_rates[2], mi->max_prob_rate,
++			     false, true);
++}
++
+ /*
+  * Update rate statistics and select new primary rates
+  *
+@@ -292,6 +307,7 @@ minstrel_ht_update_stats(struct minstrel
+ 		}
+ 	}
+ 
++	minstrel_ht_update_rates(mp, mi);
+ 	mi->stats_update = jiffies;
+ }
+ 
+@@ -330,8 +346,8 @@ minstrel_next_sample_idx(struct minstrel
+ }
+ 
+ static void
+-minstrel_downgrade_rate(struct minstrel_ht_sta *mi, unsigned int *idx,
+-			bool primary)
++minstrel_downgrade_rate(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
++			unsigned int *idx, bool primary)
+ {
+ 	int group, orig_group;
+ 
+@@ -350,6 +366,7 @@ minstrel_downgrade_rate(struct minstrel_
+ 			*idx = mi->groups[group].max_tp_rate;
+ 		else
+ 			*idx = mi->groups[group].max_tp_rate2;
++		minstrel_ht_update_rates(mp, mi);
+ 		break;
+ 	}
+ }
+@@ -450,13 +467,13 @@ minstrel_ht_tx_status(void *priv, struct
+ 	if (rate->attempts > 30 &&
+ 	    MINSTREL_FRAC(rate->success, rate->attempts) <
+ 	    MINSTREL_FRAC(20, 100))
+-		minstrel_downgrade_rate(mi, &mi->max_tp_rate, true);
++		minstrel_downgrade_rate(mp, mi, &mi->max_tp_rate, true);
+ 
+ 	rate2 = minstrel_get_ratestats(mi, mi->max_tp_rate2);
+ 	if (rate2->attempts > 30 &&
+ 	    MINSTREL_FRAC(rate2->success, rate2->attempts) <
+ 	    MINSTREL_FRAC(20, 100))
+-		minstrel_downgrade_rate(mi, &mi->max_tp_rate2, false);
++		minstrel_downgrade_rate(mp, mi, &mi->max_tp_rate2, false);
+ 
+ 	if (time_after(jiffies, mi->stats_update + (mp->update_interval / 2 * HZ) / 1000)) {
+ 		minstrel_ht_update_stats(mp, mi);
+@@ -521,7 +538,6 @@ minstrel_calc_retransmit(struct minstrel
+ static void
+ minstrel_ht_set_rate(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
+                      struct ieee80211_tx_rate *rate, int index,
+-                     struct ieee80211_tx_rate_control *txrc,
+                      bool sample, bool rtscts)
+ {
+ 	const struct mcs_group *group = &minstrel_mcs_groups[index / MCS_GROUP_RATES];
+@@ -609,6 +625,7 @@ minstrel_ht_get_rate(void *priv, struct 
+ 	struct minstrel_priv *mp = priv;
+ 	int sample_idx;
+ 	bool sample = false;
++	int last = 0;
+ 
+ 	if (rate_control_send_low(sta, priv_sta, txrc))
+ 		return;
+@@ -634,11 +651,10 @@ minstrel_ht_get_rate(void *priv, struct 
+ 	if (sample_idx >= 0) {
+ 		sample = true;
+ 		minstrel_ht_set_rate(mp, mi, &ar[0], sample_idx,
+-			txrc, true, false);
++			true, false);
+ 		info->flags |= IEEE80211_TX_CTL_RATE_CTRL_PROBE;
+ 	} else {
+-		minstrel_ht_set_rate(mp, mi, &ar[0], mi->max_tp_rate,
+-			txrc, false, false);
++		ar[0] = mi->tx_rates[0];
+ 	}
+ 
+ 	if (mp->hw->max_rates >= 3) {
+@@ -648,33 +664,27 @@ minstrel_ht_get_rate(void *priv, struct 
+ 		 * max_tp_rate -> max_tp_rate2 -> max_prob_rate by default.
+ 		 */
+ 		if (sample_idx >= 0)
+-			minstrel_ht_set_rate(mp, mi, &ar[1], mi->max_tp_rate,
+-				txrc, false, false);
++			ar[1] = mi->tx_rates[0];
+ 		else
+-			minstrel_ht_set_rate(mp, mi, &ar[1], mi->max_tp_rate2,
+-				txrc, false, true);
+-
+-		minstrel_ht_set_rate(mp, mi, &ar[2], mi->max_prob_rate,
+-				     txrc, false, !sample);
++			ar[1] = mi->tx_rates[1];
+ 
+-		ar[3].count = 0;
+-		ar[3].idx = -1;
++		ar[2] = mi->tx_rates[2];
++		last = 3;
+ 	} else if (mp->hw->max_rates == 2) {
+ 		/*
+ 		 * Only 2 tx rates supported, use
+ 		 * sample_rate -> max_prob_rate for sampling and
+ 		 * max_tp_rate -> max_prob_rate by default.
+ 		 */
+-		minstrel_ht_set_rate(mp, mi, &ar[1], mi->max_prob_rate,
+-				     txrc, false, !sample);
+-
+-		ar[2].count = 0;
+-		ar[2].idx = -1;
++		ar[1] = mi->tx_rates[2];
++		last = 2;
+ 	} else {
+ 		/* Not using MRR, only use the first rate */
+-		ar[1].count = 0;
+-		ar[1].idx = -1;
++		last = 1;
++
+ 	}
++	ar[last].count = 0;
++	ar[last].idx = -1;
+ 
+ 	mi->total_packets++;
+ 
+@@ -766,6 +776,7 @@ minstrel_ht_update_caps(void *priv, stru
+ 	if (!n_supported)
+ 		goto use_legacy;
+ 
++	minstrel_ht_update_rates(mp, mi);
+ 	return;
+ 
+ use_legacy: