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mac80211: make sure TDLS peer STA exists during setup

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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@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Arik Nemtsov 2014-06-11 17:18:26 +03:00 committed by Johannes Berg
parent c887f0d3a0
commit 7adc3e4664
1 changed files with 13 additions and 0 deletions
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13
net/mac80211/tdls.c
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@ -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,