cfg80211: Share Channel DFS state across wiphys of same DFS domain
Sharing DFS channel state across multiple wiphys (radios) could be useful with multiple radios on the system. When one radio completes CAC and markes the channel available another radio can use this information and start beaconing without really doing CAC. Whenever there is a state change in dfs channel associated to a particular wiphy the the same state change is propagated to other wiphys having the same DFS reg domain configuration. Also when a new wiphy is created the dfs channel state of other existing wiphys of same DFS domain is copied. Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qti.qualcomm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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