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authorFelix Fietkau <nbd@openwrt.org>2008-11-03 22:09:08 +0000
committerFelix Fietkau <nbd@openwrt.org>2008-11-03 22:09:08 +0000
commit21bd5492b344b42780975c6eba13195e5ba2eb5f (patch)
treebc19a4e80f39567aa1bc5ad7d836ae4bd418e6c7 /package/mac80211/patches/426-minstrel_performance.patch
parent96f98b5616a1418d668a7be286003e21aef1ea46 (diff)
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upgrade compat-wireless to 2008-11-03
SVN-Revision: 13114
Diffstat (limited to 'package/mac80211/patches/426-minstrel_performance.patch')
-rw-r--r--package/mac80211/patches/426-minstrel_performance.patch100
1 files changed, 0 insertions, 100 deletions
diff --git a/package/mac80211/patches/426-minstrel_performance.patch b/package/mac80211/patches/426-minstrel_performance.patch
deleted file mode 100644
index 7b95163c6c..0000000000
--- a/package/mac80211/patches/426-minstrel_performance.patch
+++ /dev/null
@@ -1,100 +0,0 @@
-This patch enhances minstrel's performance for non-MRR setups,
-by preventing it from sampling slower rates with >95% success
-probability and by putting at least 1 non-sample frame between
-several sample frames.
-
-Signed-off-by: Felix Fietkau <nbd@openwrt.org>
-
---- a/net/mac80211/rc80211_minstrel.c
-+++ b/net/mac80211/rc80211_minstrel.c
-@@ -126,7 +126,9 @@ minstrel_update_stats(struct minstrel_pr
- mr->adjusted_retry_count = mr->retry_count >> 1;
- if (mr->adjusted_retry_count > 2)
- mr->adjusted_retry_count = 2;
-+ mr->sample_limit = 4;
- } else {
-+ mr->sample_limit = -1;
- mr->adjusted_retry_count = mr->retry_count;
- }
- if (!mr->adjusted_retry_count)
-@@ -265,7 +267,8 @@ minstrel_get_rate(void *priv, struct iee
- (mi->sample_count + mi->sample_deferred / 2);
-
- /* delta > 0: sampling required */
-- if (delta > 0) {
-+ if ((delta > 0) && (mrr || !mi->prev_sample)) {
-+ struct minstrel_rate *msr;
- if (mi->packet_count >= 10000) {
- mi->sample_deferred = 0;
- mi->sample_count = 0;
-@@ -284,13 +287,20 @@ minstrel_get_rate(void *priv, struct iee
- }
-
- sample_ndx = minstrel_get_next_sample(mi);
-+ msr = &mi->r[sample_ndx];
- sample = true;
-- sample_slower = mrr && (mi->r[sample_ndx].perfect_tx_time >
-+ sample_slower = mrr && (msr->perfect_tx_time >
- mi->r[ndx].perfect_tx_time);
-
- if (!sample_slower) {
-- ndx = sample_ndx;
-- mi->sample_count++;
-+ if (msr->sample_limit != 0) {
-+ ndx = sample_ndx;
-+ mi->sample_count++;
-+ if (msr->sample_limit > 0)
-+ msr->sample_limit--;
-+ } else {
-+ sample = false;
-+ }
- } else {
- /* Only use IEEE80211_TX_CTL_RATE_CTRL_PROBE to mark
- * packets that have the sampling rate deferred to the
-@@ -302,10 +312,20 @@ minstrel_get_rate(void *priv, struct iee
- mi->sample_deferred++;
- }
- }
-+ mi->prev_sample = sample;
-+
-+ /* If we're not using MRR and the sampling rate already
-+ * has a probability of >95%, we shouldn't be attempting
-+ * to use it, as this only wastes precious airtime */
-+ if (!mrr && sample && (mi->r[ndx].probability > 17100))
-+ ndx = mi->max_tp_rate;
-+
- ar[0].idx = mi->r[ndx].rix;
- ar[0].count = minstrel_get_retry_count(&mi->r[ndx], info);
-
- if (!mrr) {
-+ if (!sample)
-+ ar[0].count = mp->max_retry;
- ar[1].idx = mi->lowest_rix;
- ar[1].count = mp->max_retry;
- return;
-@@ -401,6 +421,7 @@ minstrel_rate_init(void *priv, struct ie
-
- /* calculate maximum number of retransmissions before
- * fallback (based on maximum segment size) */
-+ mr->sample_limit = -1;
- mr->retry_count = 1;
- mr->retry_count_cts = 1;
- mr->retry_count_rtscts = 1;
---- a/net/mac80211/rc80211_minstrel.h
-+++ b/net/mac80211/rc80211_minstrel.h
-@@ -16,6 +16,7 @@ struct minstrel_rate {
- unsigned int perfect_tx_time;
- unsigned int ack_time;
-
-+ int sample_limit;
- unsigned int retry_count;
- unsigned int retry_count_cts;
- unsigned int retry_count_rtscts;
-@@ -57,6 +58,7 @@ struct minstrel_sta_info {
-
- int n_rates;
- struct minstrel_rate *r;
-+ bool prev_sample;
-
- /* sampling table */
- u8 *sample_table;