linux-kernel - [PATCH 4.1 42/95] mac80211: Fix local deauth while associating

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Date:	Mon,  7 Dec 2015 09:35:36 -0500
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	Andrei Otcheretianski <andrei.otcheretianski@...el.com>,
	Emmanuel Grumbach <emmanuel.grumbach@...el.com>,
	Johannes Berg <johannes.berg@...el.com>
Subject: [PATCH 4.1 42/95] mac80211: Fix local deauth while associating

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

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

From: Andrei Otcheretianski <andrei.otcheretianski@...el.com>

commit a64cba3c5330704a034bd3179270b8d04daf6987 upstream.

Local request to deauthenticate wasn't handled while associating, thus
the association could continue even when the user space required to
disconnect.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@...el.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@...el.com>
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 net/mac80211/mlme.c |   19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -4946,6 +4946,25 @@ int ieee80211_mgd_deauth(struct ieee8021
 		return 0;
 	}
 
+	if (ifmgd->assoc_data &&
+	    ether_addr_equal(ifmgd->assoc_data->bss->bssid, req->bssid)) {
+		sdata_info(sdata,
+			   "aborting association with %pM by local choice (Reason: %u=%s)\n",
+			   req->bssid, req->reason_code,
+			   ieee80211_get_reason_code_string(req->reason_code));
+
+		drv_mgd_prepare_tx(sdata->local, sdata);
+		ieee80211_send_deauth_disassoc(sdata, req->bssid,
+					       IEEE80211_STYPE_DEAUTH,
+					       req->reason_code, tx,
+					       frame_buf);
+		ieee80211_destroy_assoc_data(sdata, false);
+		ieee80211_report_disconnect(sdata, frame_buf,
+					    sizeof(frame_buf), true,
+					    req->reason_code);
+		return 0;
+	}
+
 	if (ifmgd->associated &&
 	    ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
 		sdata_info(sdata,


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