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mac80211: enable PS by default

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Enable PS by default (depending on Kconfig) -- rely on drivers
to control the level using pm_qos. Due to the previous patch
we turn off PS when necessary due to latency requirements.

This has a Kconfig symbol so people can, if they really want,
configure the default in their kernels. We may want to keep it
at "default y" only in wireless-testing for a while.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2009-04-16 13:27:42 +02:00 committed by John W. Linville
parent d91f36db51
commit bbbdff9e00
2 changed files with 24 additions and 0 deletions
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16
net/mac80211/Kconfig
View File

@ -11,6 +11,22 @@ config MAC80211
This option enables the hardware independent IEEE 802.11
networking stack.
config MAC80211_DEFAULT_PS
bool "enable powersave by default"
depends on MAC80211
default y
help
This option enables powersave mode by default.
If this causes your applications to misbehave you should fix your
applications instead -- they need to register their network
latency requirement, see Documentation/power/pm_qos_interface.txt.
config MAC80211_DEFAULT_PS_VALUE
int
default 1 if MAC80211_DEFAULT_PS
default 0
menu "Rate control algorithm selection"
depends on MAC80211 != n

8
net/mac80211/mlme.c
View File

@ -2192,6 +2192,7 @@ static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_managed *ifmgd;
u32 hw_flags;
ifmgd = &sdata->u.mgd;
INIT_WORK(&ifmgd->work, ieee80211_sta_work);
@ -2211,6 +2212,13 @@ void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
IEEE80211_STA_AUTO_CHANNEL_SEL;
if (sdata->local->hw.queues >= 4)
ifmgd->flags |= IEEE80211_STA_WMM_ENABLED;
hw_flags = sdata->local->hw.flags;
if (hw_flags & IEEE80211_HW_SUPPORTS_PS) {
ifmgd->powersave = CONFIG_MAC80211_DEFAULT_PS_VALUE;
sdata->local->hw.conf.dynamic_ps_timeout = 500;
}
}
/* configuration hooks */