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cfg80211: Share Channel DFS state across wiphys of same DFS domain

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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>
This commit is contained in:
Vasanthakumar Thiagarajan
2017-02-27 17:04:35 +05:30
committed by Johannes Berg
parent 34373d12f3
commit 8976672736
6 changed files with 218 additions and 7 deletions
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6
net/wireless/core.h
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@@ -97,6 +97,12 @@ struct cfg80211_registered_device {
struct work_struct sched_scan_stop_wk;
struct cfg80211_chan_def radar_chandef;
struct work_struct propagate_radar_detect_wk;
struct cfg80211_chan_def cac_done_chandef;
struct work_struct propagate_cac_done_wk;
/* must be last because of the way we do wiphy_priv(),
* and it should at least be aligned to NETDEV_ALIGN */
struct wiphy wiphy __aligned(NETDEV_ALIGN);