[PATCH 09/10] mac80211: make sure TDLS peer STA exists during setup
From: Arik Nemtsov <hidden>
Date: 2014-06-11 14:18:48
Subsystem:
mac80211, the rest · Maintainers:
Johannes Berg, Linus Torvalds
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 <redacted> Reviewed-by: Johannes Berg <redacted> --- 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