mac80211: Fix probe request filtering in IBSS mode

commit 0da780c269957783d341fc3559e6b4c9912af7b4 upstream.

We only reply to probe request if either the requested SSID is the
broadcast SSID or if the requested SSID matches our own SSID. This
latter case was not properly handled since we were replying to different
SSID with the same length as our own SSID.

Signed-off-by: Benoit Papillault <benoit.papillault@free.fr>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index fbffce90edbcdc9aeabefc4aa6bf57459a0342ed..07600a6871a850536cf29cb6b321aa2dd5755a9d 100644 (file)
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -643,7 +643,7 @@ static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata,
        }
        if (pos[1] != 0 &&
            (pos[1] != ifibss->ssid_len ||
-            !memcmp(pos + 2, ifibss->ssid, ifibss->ssid_len))) {
+            memcmp(pos + 2, ifibss->ssid, ifibss->ssid_len))) {
                /* Ignore ProbeReq for foreign SSID */
                return;
        }