Make sure userspace added a TDLS peer station before invoking the
transmission of the first setup frame. This ensures packets to the peer
won't go through the AP path.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@xxxxxxxxx>
Reviewed-by: Johannes Berg <johannes.berg@xxxxxxxxx>
---
net/mac80211/tdls.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/net/mac80211/tdls.c b/net/mac80211/tdls.c
index 009601a..f100c12 100644
--- a/net/mac80211/tdls.c
+++ b/net/mac80211/tdls.c
@@ -332,6 +332,19 @@ ieee80211_tdls_mgmt_setup(struct wiphy *wiphy, struct net_device *dev,
goto exit;
}
+ /*
+ * make sure we have a STA representing the peer so we drop or buffer
+ * non-TDLS-setup frames to the peer. We can't send other packets
+ * during setup through the AP path
+ */
+ rcu_read_lock();
+ if (!sta_info_get(sdata, peer)) {
+ rcu_read_unlock();
+ ret = -ENOLINK;
+ goto exit;
+ }
+ rcu_read_unlock();
+
ieee80211_flush_queues(local, sdata);
ret = ieee80211_tdls_prep_mgmt_packet(wiphy, dev, peer, action_code,
--
1.9.1
--
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