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authorVasanthakumar Thiagarajan <vthiagar@qti.qualcomm.com>2017-02-27 14:34:35 +0300
committerJohannes Berg <johannes.berg@intel.com>2017-03-06 15:54:20 +0300
commit8976672736d6089ae011fda3482e30e4380276f8 (patch)
tree9504bcc8b250ed1cf266c9083cef2909771a1cca /net/wireless/core.c
parent34373d12f3cbb74960a73431138ef619d857996f (diff)
downloadlinux-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/core.c')
-rw-r--r--net/wireless/core.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 76e664144c8e..b1a028d381ef 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -357,6 +357,38 @@ static void cfg80211_sched_scan_stop_wk(struct work_struct *work)
rtnl_unlock();
}
+static void cfg80211_propagate_radar_detect_wk(struct work_struct *work)
+{
+ struct cfg80211_registered_device *rdev;
+
+ rdev = container_of(work, struct cfg80211_registered_device,
+ propagate_radar_detect_wk);
+
+ rtnl_lock();
+
+ regulatory_propagate_dfs_state(&rdev->wiphy, &rdev->radar_chandef,
+ NL80211_DFS_UNAVAILABLE,
+ NL80211_RADAR_DETECTED);
+
+ rtnl_unlock();
+}
+
+static void cfg80211_propagate_cac_done_wk(struct work_struct *work)
+{
+ struct cfg80211_registered_device *rdev;
+
+ rdev = container_of(work, struct cfg80211_registered_device,
+ propagate_cac_done_wk);
+
+ rtnl_lock();
+
+ regulatory_propagate_dfs_state(&rdev->wiphy, &rdev->cac_done_chandef,
+ NL80211_DFS_AVAILABLE,
+ NL80211_RADAR_CAC_FINISHED);
+
+ rtnl_unlock();
+}
+
/* exported functions */
struct wiphy *wiphy_new_nm(const struct cfg80211_ops *ops, int sizeof_priv,
@@ -456,6 +488,9 @@ use_default_name:
spin_lock_init(&rdev->destroy_list_lock);
INIT_WORK(&rdev->destroy_work, cfg80211_destroy_iface_wk);
INIT_WORK(&rdev->sched_scan_stop_wk, cfg80211_sched_scan_stop_wk);
+ INIT_WORK(&rdev->propagate_radar_detect_wk,
+ cfg80211_propagate_radar_detect_wk);
+ INIT_WORK(&rdev->propagate_cac_done_wk, cfg80211_propagate_cac_done_wk);
#ifdef CONFIG_CFG80211_DEFAULT_PS
rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
@@ -915,6 +950,8 @@ void wiphy_unregister(struct wiphy *wiphy)
flush_work(&rdev->destroy_work);
flush_work(&rdev->sched_scan_stop_wk);
flush_work(&rdev->mlme_unreg_wk);
+ flush_work(&rdev->propagate_radar_detect_wk);
+ flush_work(&rdev->propagate_cac_done_wk);
#ifdef CONFIG_PM
if (rdev->wiphy.wowlan_config && rdev->ops->set_wakeup)