Introduce NL80211_EXT_FEATURE_RADAR_OFFCHAN feature flag in order to
notify userland the underlay hw supports offchannel radar/CAC detection.
Signed-off-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
---
include/uapi/linux/nl80211.h | 4 ++++
net/wireless/nl80211.c | 4 ++++
2 files changed, 8 insertions(+)
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 96e622777bb2..d856c95ea736 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -6055,6 +6055,9 @@ enum nl80211_feature_flags {
* frames. Userspace has to share FILS AAD details to the driver by using
* @NL80211_CMD_SET_FILS_AAD.
*
+ * @NL80211_EXT_FEATURE_RADAR_OFFCHAN: Device supports offchannel radar/CAC
+ * detection.
+ *
* @NUM_NL80211_EXT_FEATURES: number of extended features.
* @MAX_NL80211_EXT_FEATURES: highest extended feature index.
*/
@@ -6121,6 +6124,7 @@ enum nl80211_ext_feature_index {
NL80211_EXT_FEATURE_PROT_RANGE_NEGO_AND_MEASURE,
NL80211_EXT_FEATURE_BSS_COLOR,
NL80211_EXT_FEATURE_FILS_CRYPTO_OFFLOAD,
+ NL80211_EXT_FEATURE_RADAR_OFFCHAN,
/* add new features before the definition below */
NUM_NL80211_EXT_FEATURES,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index a296f180624e..9f19ff5b13c5 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -9304,6 +9304,10 @@ static int nl80211_start_radar_detection(struct sk_buff *skb,
if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_OFFCHAN])) {
/* offchannel radar detection */
+ if (!wiphy_ext_feature_isset(wiphy,
+ NL80211_EXT_FEATURE_RADAR_OFFCHAN))
+ return -EOPNOTSUPP;
+
return rdev_set_radar_offchan(rdev, &chandef);
}
--
2.31.1
