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mac80211: refactor dynamic power save check 

Refactor dynamic power save checks to a function of it's own for better
readibility. No functional changes.

Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Kalle Valo 2009-10-27 17:36:09 +02:00 committed by John W. Linville
parent 7bcfaf2f43
commit ed620590de
1 changed files with 21 additions and 3 deletions
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24
net/mac80211/tx.c
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@ -1387,6 +1387,26 @@ static int ieee80211_skb_resize(struct ieee80211_local *local,
return 0;
}
static bool need_dynamic_ps(struct ieee80211_local *local)
{
/* driver doesn't support power save */
if (!(local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK))
return false;
/* dynamic power save disabled */
if (local->hw.conf.dynamic_ps_timeout <= 0)
return false;
/* we are scanning, don't enable power save */
if (local->scanning)
return false;
if (!local->ps_sdata)
return false;
return true;
}
static void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb)
{
@ -1399,9 +1419,7 @@ static void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
dev_hold(sdata->dev);
if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
local->hw.conf.dynamic_ps_timeout > 0 &&
!(local->scanning) && local->ps_sdata) {
if (need_dynamic_ps(local)) {
if (local->hw.conf.flags & IEEE80211_CONF_PS) {
ieee80211_stop_queues_by_reason(&local->hw,
IEEE80211_QUEUE_STOP_REASON_PS);