mac80211: introduce flush operation
We've long lacked a good confirmation that frames
have really gone out, e.g. before going off-channel
for a scan. Add a flush() operation that drivers
can implement to provide that confirmation, and use
it in a few places:
* before scanning sends the nullfunc frames
* after scanning sends the nullfunc frames, if any
* when going idle, to send any pending frames
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index 727e4cf..cbe133b 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -259,4 +259,11 @@
if (local->ops->rfkill_poll)
local->ops->rfkill_poll(&local->hw);
}
+
+static inline void drv_flush(struct ieee80211_local *local, bool drop)
+{
+ trace_drv_flush(local, drop);
+ if (local->ops->flush)
+ local->ops->flush(&local->hw, drop);
+}
#endif /* __MAC80211_DRIVER_OPS */