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authorStefano Brivio <stefano.brivio@polimi.it>2007-12-23 04:44:56 +0100
committerDavid S. Miller <davem@davemloft.net>2008-01-28 15:00:53 -0800
commitd439810bda5082e213c59c2aa8108ae4c0e520ef (patch)
treea7c85a25644cd35c1ec8ea396da12c998e8ef2e8 /net/mac80211/rc80211_pid.h
parent13e05aa631b195ce30737b320da17e7542c82ead (diff)
downloadop-kernel-dev-d439810bda5082e213c59c2aa8108ae4c0e520ef.zip
op-kernel-dev-d439810bda5082e213c59c2aa8108ae4c0e520ef.tar.gz
rc80211-pid: pf_target tuning
Set a better value for percentage target for failed frames. The previous value slowed down too much rate increases in case of permanently low activity. While at it, increase readability. Signed-off-by: Stefano Brivio <stefano.brivio@polimi.it> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mac80211/rc80211_pid.h')
-rw-r--r--net/mac80211/rc80211_pid.h26
1 files changed, 13 insertions, 13 deletions
diff --git a/net/mac80211/rc80211_pid.h b/net/mac80211/rc80211_pid.h
index 6afd3ce..b98e16a 100644
--- a/net/mac80211/rc80211_pid.h
+++ b/net/mac80211/rc80211_pid.h
@@ -11,41 +11,41 @@
#define RC80211_PID_H
/* Sampling period for measuring percentage of failed frames. */
-#define RC_PID_INTERVAL (HZ / 8)
+#define RC_PID_INTERVAL (HZ / 8)
/* Exponential averaging smoothness (used for I part of PID controller) */
-#define RC_PID_SMOOTHING_SHIFT 3
-#define RC_PID_SMOOTHING (1 << RC_PID_SMOOTHING_SHIFT)
+#define RC_PID_SMOOTHING_SHIFT 3
+#define RC_PID_SMOOTHING (1 << RC_PID_SMOOTHING_SHIFT)
/* Sharpening factor (used for D part of PID controller) */
-#define RC_PID_SHARPENING_FACTOR 0
-#define RC_PID_SHARPENING_DURATION 0
+#define RC_PID_SHARPENING_FACTOR 0
+#define RC_PID_SHARPENING_DURATION 0
/* Fixed point arithmetic shifting amount. */
-#define RC_PID_ARITH_SHIFT 8
+#define RC_PID_ARITH_SHIFT 8
/* Fixed point arithmetic factor. */
-#define RC_PID_ARITH_FACTOR (1 << RC_PID_ARITH_SHIFT)
+#define RC_PID_ARITH_FACTOR (1 << RC_PID_ARITH_SHIFT)
/* Proportional PID component coefficient. */
-#define RC_PID_COEFF_P 15
+#define RC_PID_COEFF_P 15
/* Integral PID component coefficient. */
-#define RC_PID_COEFF_I 9
+#define RC_PID_COEFF_I 9
/* Derivative PID component coefficient. */
-#define RC_PID_COEFF_D 15
+#define RC_PID_COEFF_D 15
/* Target failed frames rate for the PID controller. NB: This effectively gives
* maximum failed frames percentage we're willing to accept. If the wireless
* link quality is good, the controller will fail to adjust failed frames
* percentage to the target. This is intentional.
*/
-#define RC_PID_TARGET_PF 11
+#define RC_PID_TARGET_PF 14
/* Rate behaviour normalization quantity over time. */
-#define RC_PID_NORM_OFFSET 3
+#define RC_PID_NORM_OFFSET 3
/* Push high rates right after loading. */
-#define RC_PID_FAST_START 0
+#define RC_PID_FAST_START 0
/* Arithmetic right shift for positive and negative values for ISO C. */
#define RC_PID_DO_ARITH_RIGHT_SHIFT(x, y) \
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