mac80211: Fix ps-qos network latency handling

The ps-qos latency handling is broken. It uses predetermined latency values
to select specific dynamic PS timeouts. With common AP configurations, these
values overlap with beacon interval and are therefore essentially useless
(for network latencies less than the beacon interval, PSM is disabled.)

This patch remedies the problem by replacing the predetermined network latency
values with one high value (1900ms) which is used to go trigger full psm. For
backwards compatibility, the value 2000ms is still mapped to a dynamic ps
timeout of 100ms.

Currently also the mac80211 internal value for storing user space configured
dynamic PSM values is incorrectly in the driver visible ieee80211_conf struct.
Move it to the ieee80211_local struct.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 1 insertions, 4 deletions

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 3a47877..fe1a3a6 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -695,9 +695,6 @@ enum ieee80211_smps_mode {
  * @dynamic_ps_timeout: The dynamic powersave timeout (in ms), see the
  *	powersave documentation below. This variable is valid only when
  *	the CONF_PS flag is set.
- * @dynamic_ps_forced_timeout: The dynamic powersave timeout (in ms) configured
- *	by cfg80211 (essentially, wext) If set, this value overrules the value
- *	chosen by mac80211 based on ps qos network latency.
  *
  * @power_level: requested transmit power (in dBm)
  *
@@ -717,7 +714,7 @@ enum ieee80211_smps_mode {
  */
 struct ieee80211_conf {
 	u32 flags;
-	int power_level, dynamic_ps_timeout, dynamic_ps_forced_timeout;
+	int power_level, dynamic_ps_timeout;
 	int max_sleep_period;
 
 	u16 listen_interval;