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[mac80211-next,3/4] cfg80211: introduce cfg80211_cac_offchan_event routine

Message ID b263b45944edea9564835db19b4502fafcec677d.1634644309.git.lorenzo@kernel.org (mailing list archive)
State Changes Requested
Delegated to: Johannes Berg
Headers show
Series add offchannel radar chain support | expand

Commit Message

Lorenzo Bianconi Oct. 19, 2021, 11:59 a.m. UTC 
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.

Tested-by: Evelyn Tsai <evelyn.tsai@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
 include/net/cfg80211.h | 13 +++++++++++++
 net/wireless/mlme.c    | 26 ++++++++++++++++++++++++++
 2 files changed, 39 insertions(+)
diff mbox series

Patch

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index af62af6bf369..2419b4e192ae 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -7630,6 +7630,19 @@  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);