diff options
| author | Vasanthakumar Thiagarajan <vthiagar@qti.qualcomm.com> | 2017-02-27 14:34:35 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2017-03-06 15:54:20 +0300 |
| commit | 8976672736d6089ae011fda3482e30e4380276f8 (patch) | |
| tree | 9504bcc8b250ed1cf266c9083cef2909771a1cca /net/wireless/chan.c | |
| parent | 34373d12f3cbb74960a73431138ef619d857996f (diff) | |
| download | linux-8976672736d6089ae011fda3482e30e4380276f8.tar.xz | |
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>
Diffstat (limited to 'net/wireless/chan.c')
| -rw-r--r-- | net/wireless/chan.c | 30 |
1 files changed, 23 insertions, 7 deletions
diff --git a/net/wireless/chan.c b/net/wireless/chan.c index 099f13c0c39e..b8aa5a7d5c77 100644 --- a/net/wireless/chan.c +++ b/net/wireless/chan.c @@ -531,16 +531,11 @@ bool cfg80211_beaconing_iface_active(struct wireless_dev *wdev) return active; } -bool cfg80211_any_wiphy_oper_chan(struct wiphy *wiphy, - struct ieee80211_channel *chan) +static bool cfg80211_is_wiphy_oper_chan(struct wiphy *wiphy, + struct ieee80211_channel *chan) { struct wireless_dev *wdev; - ASSERT_RTNL(); - - if (!(chan->flags & IEEE80211_CHAN_RADAR)) - return false; - list_for_each_entry(wdev, &wiphy->wdev_list, list) { wdev_lock(wdev); if (!cfg80211_beaconing_iface_active(wdev)) { @@ -558,6 +553,27 @@ bool cfg80211_any_wiphy_oper_chan(struct wiphy *wiphy, return false; } +bool cfg80211_any_wiphy_oper_chan(struct wiphy *wiphy, + struct ieee80211_channel *chan) +{ + struct cfg80211_registered_device *rdev; + + ASSERT_RTNL(); + + if (!(chan->flags & IEEE80211_CHAN_RADAR)) + return false; + + list_for_each_entry(rdev, &cfg80211_rdev_list, list) { + if (!reg_dfs_domain_same(wiphy, &rdev->wiphy)) + continue; + + if (cfg80211_is_wiphy_oper_chan(&rdev->wiphy, chan)) + return true; + } + + return false; +} + static bool cfg80211_get_chans_dfs_available(struct wiphy *wiphy, u32 center_freq, u32 bandwidth) |