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mac80211: support hw scan while idle

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Currently, mac80211 goes to idle-off before starting a scan.
However, some devices that implement hw scan might not
need going idle-off in order to perform a hw scan, and
thus saving some energy and simplifying their state machine.

(Note that this is also the case for sched scan - it
currently doesn't make mac80211 go idle-off)

Add a new flag to indicate support for hw scan while idle.

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Eliad Peller
2012-02-02 17:44:55 +02:00
committed by John W. Linville
parent 3dc5e17518
commit 885bd8eca6
4 changed files with 12 additions and 1 deletions
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3
net/mac80211/iface.c
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@@ -1332,7 +1332,8 @@ u32 __ieee80211_recalc_idle(struct ieee80211_local *local)
wk->sdata->vif.bss_conf.idle = false;
}
if (local->scan_sdata) {
if (local->scan_sdata &&
!(local->hw.flags & IEEE80211_HW_SCAN_WHILE_IDLE)) {
scanning = true;
local->scan_sdata->vif.bss_conf.idle = false;
}