nl80211/cfg80211: add radar detection command/event

[mirror_ubuntu-artful-kernel.git] / net / wireless / core.h

diff --git a/net/wireless/core.h b/net/wireless/core.h
index 949c9573d8d73a7329c2af4565f30f21b58e6dfc..3aec0e429d8adbf9d44c7fbc5bb7fa503e5b9818 100644 (file)
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -86,6 +86,8 @@ struct cfg80211_registered_device {
 
        struct cfg80211_wowlan *wowlan;
 
+       struct delayed_work dfs_update_channels_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);
@@ -431,6 +433,22 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
                                 enum cfg80211_chan_mode chanmode,
                                 u8 radar_detect);
 
+/**
+ * cfg80211_chandef_dfs_required - checks if radar detection is required
+ * @wiphy: the wiphy to validate against
+ * @chandef: the channel definition to check
+ * Return: 1 if radar detection is required, 0 if it is not, < 0 on error
+ */
+int cfg80211_chandef_dfs_required(struct wiphy *wiphy,
+                                 const struct cfg80211_chan_def *c);
+
+void cfg80211_set_dfs_state(struct wiphy *wiphy,
+                           const struct cfg80211_chan_def *chandef,
+                           enum nl80211_dfs_state dfs_state);
+
+void cfg80211_dfs_channels_update_work(struct work_struct *work);
+
+
 static inline int
 cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
                              struct wireless_dev *wdev,
@@ -457,6 +475,16 @@ cfg80211_can_use_chan(struct cfg80211_registered_device *rdev,
                                            chan, chanmode, 0);
 }
 
+static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
+{
+       unsigned long end = jiffies;
+
+       if (end >= start)
+               return jiffies_to_msecs(end - start);
+
+       return jiffies_to_msecs(end + (MAX_JIFFY_OFFSET - start) + 1);
+}
+
 void
 cfg80211_get_chan_state(struct wireless_dev *wdev,
                        struct ieee80211_channel **chan,