Introduce cfg80211_cac_offchan_event routine in order to notify
userland when a Channel Availability Check (CAC) is finished or aborted
by offchannel dedicated chain.
Signed-off-by: Lorenzo Bianconi <[email protected]>
---
include/net/cfg80211.h | 13 +++++++++++++
net/wireless/mlme.c | 26 ++++++++++++++++++++++++++
2 files changed, 39 insertions(+)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index fa31b0919be9..7c1bcd406a34 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -7564,6 +7564,19 @@ void cfg80211_cac_event(struct net_device *netdev,
const struct cfg80211_chan_def *chandef,
enum nl80211_radar_event event, gfp_t gfp);
+/**
+ * cfg80211_cac_offchan_event - Channel Availability Check (CAC) offchan event
+ * @wiphy: the wiphy
+ * @chandef: chandef for the current channel
+ * @event: type of event
+ * @gfp: context flags
+ *
+ * This function is called when a Channel Availability Check (CAC) is finished
+ * or aborted by offchannel dedicated chain.
+ */
+void cfg80211_cac_offchan_event(struct wiphy *wiphy,
+ const struct cfg80211_chan_def *chandef,
+ enum nl80211_radar_event event, gfp_t gfp);
/**
* cfg80211_gtk_rekey_notify - notify userspace about driver rekeying
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 3aa69b375a10..4362f4f49bb4 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -968,3 +968,29 @@ void cfg80211_cac_event(struct net_device *netdev,
nl80211_radar_notify(rdev, chandef, event, netdev, gfp);
}
EXPORT_SYMBOL(cfg80211_cac_event);
+
+void cfg80211_cac_offchan_event(struct wiphy *wiphy,
+ const struct cfg80211_chan_def *chandef,
+ enum nl80211_radar_event event, gfp_t gfp)
+{
+ struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
+
+ switch (event) {
+ case NL80211_RADAR_CAC_FINISHED:
+ cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_AVAILABLE);
+ memcpy(&rdev->cac_done_chandef, chandef,
+ sizeof(struct cfg80211_chan_def));
+ queue_work(cfg80211_wq, &rdev->propagate_cac_done_wk);
+ cfg80211_sched_dfs_chan_update(rdev);
+ break;
+ case NL80211_RADAR_CAC_ABORTED:
+ case NL80211_RADAR_CAC_STARTED:
+ break;
+ default:
+ WARN_ON(1);
+ return;
+ }
+
+ nl80211_radar_notify(rdev, chandef, event, NULL, gfp);
+}
+EXPORT_SYMBOL(cfg80211_cac_offchan_event);
--
2.31.1