[PATCH v2 mac80211-next 6/6] cfg80211: introduce NL80211_EXT_FEATURE_RADAR_OFFCHAN feature flag
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: 2021-10-23 09:11:35
Subsystem:
802.11 (including cfg80211/nl80211), the rest · Maintainers:
Johannes Berg, Linus Torvalds
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@kernel.org> --- include/uapi/linux/nl80211.h | 4 ++++ net/wireless/mlme.c | 4 ++++ 2 files changed, 8 insertions(+)
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 87ece3e68b8b..3e734826792f 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h@@ -6060,6 +6060,9 @@ 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. */
@@ -6126,6 +6129,7 @@ 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/mlme.c b/net/wireless/mlme.c
index 532df85d1c26..247ee0a01e8b 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c@@ -1040,6 +1040,10 @@ cfg80211_start_offchan_radar_detection(struct cfg80211_registered_device *rdev, unsigned int cac_time_ms; int err = -EBUSY; + if (!wiphy_ext_feature_isset(&rdev->wiphy, + NL80211_EXT_FEATURE_RADAR_OFFCHAN)) + return -EOPNOTSUPP; + mutex_lock(&rdev->offchan_mutex); if (rdev->offchan_radar_wdev) goto out;
--
2.31.1