From: Eliad Peller <eliad@wizery.com>
Date: Thu, 26 Jan 2012 11:36:05 +0000 (+0200)
Subject: mac80211: send null packet on active (psm) reconfiguration
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6e1b1b246096fe04467f928973487fa47afaf2cc;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git

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>
---

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
@@ -1271,6 +1271,21 @@ 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.