mac80211: send null packet on active (psm) reconfiguration

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>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 30d72e2af7ce..d82d886d0867 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.
          *