mac80211-$(CONFIG_MAC80211_RC_MINSTREL) += $(rc80211_minstrel-y)
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
-@@ -714,6 +714,10 @@ static int __init ieee80211_init(void)
+@@ -716,6 +716,10 @@ static int __init ieee80211_init(void)
if (ret)
return ret;
ret = rc80211_pid_init();
if (ret)
goto err_pid;
-@@ -726,6 +730,8 @@ static int __init ieee80211_init(void)
+@@ -728,6 +732,8 @@ static int __init ieee80211_init(void)
err_netdev:
rc80211_pid_exit();
err_pid:
rc80211_minstrel_exit();
return ret;
-@@ -734,6 +740,7 @@ static int __init ieee80211_init(void)
+@@ -736,6 +742,7 @@ static int __init ieee80211_init(void)
static void __exit ieee80211_exit(void)
{
rc80211_pid_exit();
--- /dev/null
+++ b/net/mac80211/rc80211_minstrel_ht.c
-@@ -0,0 +1,815 @@
+@@ -0,0 +1,822 @@
+/*
+ * Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
+ *
+ if (!mg->supported)
+ continue;
+
-+ if (++mg->index > MCS_GROUP_RATES) {
++ if (++mg->index >= MCS_GROUP_RATES) {
+ mg->index = 0;
-+ if (++mg->column > ARRAY_SIZE(sample_table))
++ if (++mg->column >= ARRAY_SIZE(sample_table))
+ mg->column = 0;
+ }
+ break;
+ 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);
++ mi->sample_wait = 4 + 2 * MINSTREL_TRUNC(mi->avg_ampdu_len);
+ mi->sample_tries = 3;
+ mi->sample_count--;
+ }
+ if (!msp->is_ht)
+ return mac80211_minstrel.get_rate(priv, sta, &msp->legacy, txrc);
+
++ info->flags |= mi->tx_flags;
+ sample_idx = minstrel_get_sample_rate(mp, mi);
+ if (sample_idx >= 0) {
+ minstrel_ht_set_rate(mp, mi, &ar[0], sample_idx,
+ }
+ mi->sample_tries = 4;
+
++ if (sta_cap & IEEE80211_HT_CAP_TX_STBC)
++ mi->tx_flags |= IEEE80211_TX_CTL_STBC;
++
++ if (sta_cap & IEEE80211_HT_CAP_LDPC_CODING)
++ mi->tx_flags |= IEEE80211_TX_CTL_LDPC;
++
+ if (oper_chan_type != NL80211_CHAN_HT40MINUS &&
+ oper_chan_type != NL80211_CHAN_HT40PLUS)
+ sta_cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
+}
--- /dev/null
+++ b/net/mac80211/rc80211_minstrel_ht.h
-@@ -0,0 +1,125 @@
+@@ -0,0 +1,128 @@
+/*
+ * Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
+ *
+#define __RC_MINSTREL_HT_H
+
+/*
-+ * maximum number of spatial streams to make use of
-+ * set this value to 3 once we have drivers that support it
++ * The number of streams can be changed to 2 to reduce code
++ * size and memory footprint.
+ */
-+#define MINSTREL_MAX_STREAMS 2
++#define MINSTREL_MAX_STREAMS 3
+#define MINSTREL_STREAM_GROUPS 4
+
+/* scaled fraction values */
+ unsigned int total_packets;
+ unsigned int sample_packets;
+
++ /* tx flags to add for frames for this sta */
++ u32 tx_flags;
++
+ u8 sample_wait;
+ u8 sample_tries;
+ u8 sample_count;