optimize the performance of the minstrel rate algorithm - don't sample lower rates...

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7437 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/madwifi/patches/119-minstrel_rates.patch b/package/madwifi/patches/119-minstrel_rates.patch
new file mode 100644 (file)
index 0000000..6053427
--- /dev/null
+++ b/package/madwifi/patches/119-minstrel_rates.patch
@@ -0,0 +1,12 @@
+diff -ur madwifi.old/ath_rate/minstrel/minstrel.c madwifi.dev/ath_rate/minstrel/minstrel.c
+--- madwifi.old/ath_rate/minstrel/minstrel.c   2007-06-01 16:44:25.137903000 +0200
++++ madwifi.dev/ath_rate/minstrel/minstrel.c   2007-06-01 22:03:15.408659936 +0200
+@@ -358,6 +358,8 @@
+                                       if (sn->rs_sampleColumn >= MINSTREL_COLUMNS)
+                                               sn->rs_sampleColumn = 0;
+                               }
++                              if (ndx < sn->max_prob_rate - 2)
++                                      ndx = sn->max_tp_rate;
+                       } else
+                               ndx = sn->max_tp_rate;
+                }