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authorJohannes Berg <johannes@sipsolutions.net>2009-04-16 13:17:25 +0200
committerJohn W. Linville <linville@tuxdriver.com>2009-04-22 16:57:16 -0400
commit10f644a47b76d3e61b98f2d02ce9690b94c51ee5 (patch)
treefc344d0f888ea0b97608cd53eec1d2dc17672087 /include
parent965bedadc01d34027455d5d5b67063ef0209c955 (diff)
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mac80211: disable powersave if pm_qos asks for low latency
When an application asks for a latency lower than the beacon interval there's nothing we can do -- we need to stay awake and not have the AP buffer frames for us. Add code to automatically calculate this constraint in mac80211 so drivers need not concern themselves with it. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/ieee80211.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 4b501b48ce8..53563d53b5a 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -1383,4 +1383,13 @@ static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq)
return -1;
}
+/**
+ * ieee80211_tu_to_usec - convert time units (TU) to microseconds
+ * @tu: the TUs
+ */
+static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
+{
+ return 1024 * tu;
+}
+
#endif /* LINUX_IEEE80211_H */