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mac80211: improve minstrel_ht performance by ensuring that rates get sampled fast enough
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@23554 3c298f89-4303-0410-b956-a3cf2f4a3e73
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package/mac80211/patches/560-minstrel_ht_performance.patch
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31
package/mac80211/patches/560-minstrel_ht_performance.patch
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@ -0,0 +1,31 @@
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--- a/net/mac80211/rc80211_minstrel_ht.h
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+++ b/net/mac80211/rc80211_minstrel_ht.h
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@@ -103,6 +103,7 @@ struct minstrel_ht_sta {
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u8 sample_tries;
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u8 sample_count;
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u8 sample_slow;
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+ u8 sample_retry;
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/* current MCS group to be sampled */
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u8 sample_group;
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--- a/net/mac80211/rc80211_minstrel_ht.c
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+++ b/net/mac80211/rc80211_minstrel_ht.c
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@@ -261,6 +261,7 @@ minstrel_ht_update_stats(struct minstrel
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/* try to sample up to half of the availble rates during each interval */
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mi->sample_count *= 4;
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+ mi->sample_retry = mi->sample_count;
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cur_prob = 0;
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cur_prob_tp = 0;
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@@ -572,6 +573,10 @@ minstrel_get_sample_rate(struct minstrel
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return sample_idx;
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next:
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+ if (mi->sample_retry > 0) {
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+ mi->sample_retry--;
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+ mi->sample_tries++;
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+ }
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minstrel_next_sample_idx(mi);
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return -1;
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}
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