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[PATCH] mac80211: allow mgmt frame transmission on DFS channels

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Allow management frame injection on DFS channels if the channel has been CAC
checked and is available

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi83@xxxxxxxxx>
---
 net/mac80211/tx.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 3456c04..edb1d3e 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1694,8 +1694,10 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
 	 * radar detection by itself. We can do that later by adding a
 	 * monitor flag interfaces used for AP support.
 	 */
-	if ((chan->flags & (IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_RADAR |
-			    IEEE80211_CHAN_PASSIVE_SCAN)))
+	if (((chan->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
+			     IEEE80211_CHAN_NO_IBSS))) ||
+	    ((chan->flags & IEEE80211_CHAN_RADAR) &&
+	     chan->dfs_state != NL80211_DFS_AVAILABLE))
 		goto fail_rcu;
 
 	ieee80211_xmit(sdata, skb, chan->band);
-- 
1.8.1.2

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