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| author | Simon Wunderlich | 2013-09-03 19:43:18 +0200 |
|---|---|---|
| committer | Johannes Berg | 2013-10-01 13:05:59 +0200 |
| commit | ff311bc11a7e2da95e1e17f99b7e4951c7060547 (patch) | |
| tree | 319f900f3d9b540ef357cf7f048faa6652eb4b65 | |
| parent | mac80211: improve default WMM parameter setting (diff) | |
| download | kernel-qcow2-linux-ff311bc11a7e2da95e1e17f99b7e4951c7060547.tar.gz kernel-qcow2-linux-ff311bc11a7e2da95e1e17f99b7e4951c7060547.tar.xz kernel-qcow2-linux-ff311bc11a7e2da95e1e17f99b7e4951c7060547.zip | |
nl80211: allow CAC only if no operation is going on
A CAC should fail if it is triggered while the interface is already
running.
Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| -rw-r--r-- | net/wireless/nl80211.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index ae617112b8f5..2838206ddad3 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -5591,6 +5591,9 @@ static int nl80211_start_radar_detection(struct sk_buff *skb, if (err) return err; + if (netif_carrier_ok(dev)) + return -EBUSY; + if (wdev->cac_started) return -EBUSY; |