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-rw-r--r--package/madwifi/patches-testing/310-minstrel_sampling.patch84
1 files changed, 84 insertions, 0 deletions
diff --git a/package/madwifi/patches-testing/310-minstrel_sampling.patch b/package/madwifi/patches-testing/310-minstrel_sampling.patch
new file mode 100644
index 0000000000..b7f55d5005
--- /dev/null
+++ b/package/madwifi/patches-testing/310-minstrel_sampling.patch
@@ -0,0 +1,84 @@
+--- a/ath/if_ath.c
++++ b/ath/if_ath.c
+@@ -8110,6 +8110,7 @@
+ ath_hal_setupxtxdesc(sc->sc_ah, ds, mrr.rate1, mrr.retries1,
+ mrr.rate2, mrr.retries2,
+ mrr.rate3, mrr.retries3);
++ bf->rcflags = mrr.privflags;
+ }
+
+ #ifndef ATH_SUPERG_FF
+--- a/ath/if_athvar.h
++++ b/ath/if_athvar.h
+@@ -454,6 +454,7 @@
+ u_int16_t bf_flags; /* tx descriptor flags */
+ u_int64_t bf_tsf;
+ int16_t bf_channoise;
++ unsigned int rcflags;
+ #ifdef ATH_SUPERG_FF
+ /* XXX: combine this with bf_skbaddr if it ever changes to accommodate
+ * multiple segments.
+--- a/ath_rate/minstrel/minstrel.c
++++ b/ath_rate/minstrel/minstrel.c
+@@ -341,18 +341,21 @@
+ if (sn->static_rate_ndx >= 0) {
+ ndx = sn->static_rate_ndx;
+ } else {
++ int delta;
++
+ sn->packet_count++;
+ sn->random_n = (sn->a * sn->random_n) + sn->b;
+ offset = sn->random_n & 0xf;
+
+- if ((((100 * sn->sample_count) / sn->packet_count) <
+- ath_lookaround_rate) &&
+- (offset < 2)) {
++ delta = (sn->packet_count * ath_lookaround_rate / 100) - sn->sample_count;
++ if ((delta > 0) && (offset < 2)) {
+ sn->sample_count++;
+ sn->is_sampling = 1;
+ if (sn->packet_count >= 10000) {
+ sn->sample_count = 0;
+ sn->packet_count = 0;
++ } else if (delta > sn->num_rates * 2) {
++ sn->sample_count += ((delta - sn->num_rates * 2) * ath_lookaround_rate) / 100;
+ }
+
+ /* Don't look for slowest rate (i.e. slowest
+@@ -420,11 +423,14 @@
+ if (sn->num_rates <= 0)
+ return;
+
++ mrr->privflags = sn->is_sampling;
+ if (sn->is_sampling) {
+ sn->is_sampling = 0;
+- if (sn->rs_sample_rate_slower)
++ if (sn->rs_sample_rate_slower) {
+ rc1 = sn->rs_sample_rate;
+- else
++ if (sn->sample_count > 0)
++ sn->sample_count--;
++ } else
+ rc1 = sn->max_tp_rate;
+ } else {
+ rc1 = sn->max_tp_rate2;
+@@ -552,6 +558,9 @@
+ if (tries <= tries1)
+ return;
+
++ if (bf->rcflags)
++ sn->sample_count++;
++
+ if (tries2 < 0)
+ return;
+ tries = tries - tries1;
+--- a/net80211/ieee80211_rate.h
++++ b/net80211/ieee80211_rate.h
+@@ -87,6 +87,7 @@
+ int retries2;
+ int rate3;
+ int retries3;
++ int privflags;
+ };
+
+ struct ieee80211_rate_ops {