[PATCH] mac80211: send null packet on active (psm) reconfiguration

[Eliad Peller <eliad@wizery.com>]

The sta might be in psm against the ap (e.g. because
this was the before a hw restart), so we explicitly
send a null packet in order to make sure it'll
sync against the ap (and get out of psm).

Signed-off-by: Eliad Peller <eliad@wizery.com>
---
 net/mac80211/util.c |   15 +++++++++++++++
 1 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 9919892..17de0dd 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1272,6 +1272,21 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 	ieee80211_recalc_ps(local, -1);
 
 	/*
+	 * The sta might be in psm against the ap (e.g. because
+	 * this was the state before a hw restart), so we
+	 * explicitly send a null packet in order to make sure
+	 * it'll sync against the ap (and get out of psm).
+	 */
+	if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
+		list_for_each_entry(sdata, &local->interfaces, list) {
+			if (sdata->vif.type != NL80211_IFTYPE_STATION)
+				continue;
+
+			ieee80211_send_nullfunc(local, sdata, 0);
+		}
+	}
+
+	/*
 	 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
 	 * sessions can be established after a resume.
 	 *
-- 
1.7.6.401.g6a319