linux-kernel - [ 118/262] mac80211: clear bssid on auth/assoc failure

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Date:	Fri, 28 Sep 2012 11:50:47 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Greg KH <gregkh@...uxfoundation.org>, alan@...rguk.ukuu.org.uk,
	Eliad Peller <eliad@...ery.com>,
	Johannes Berg <johannes.berg@...el.com>
Subject: [ 118/262] mac80211: clear bssid on auth/assoc failure

From: Greg KH <gregkh@...uxfoundation.org>

3.5-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Eliad Peller <eliad@...ery.com>

commit 3d2abdfdf14f4d6decc2023708211e19b096f4ca upstream.

ifmgd->bssid wasn't cleared properly in some
auth/assoc failure cases, causing mac80211 and
the low-level driver to go out of sync.

Clear ifmgd->bssid on failure, and notify the driver.

Signed-off-by: Eliad Peller <eliad@...ery.com>
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 net/mac80211/mlme.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -3270,6 +3270,8 @@ int ieee80211_mgd_auth(struct ieee80211_
 	goto out_unlock;
 
  err_clear:
+	memset(ifmgd->bssid, 0, ETH_ALEN);
+	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
 	ifmgd->auth_data = NULL;
  err_free:
 	kfree(auth_data);
@@ -3449,6 +3451,8 @@ int ieee80211_mgd_assoc(struct ieee80211
 	err = 0;
 	goto out;
  err_clear:
+	memset(ifmgd->bssid, 0, ETH_ALEN);
+	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
 	ifmgd->assoc_data = NULL;
  err_free:
 	kfree(assoc_data);


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