@@ -4205,11 +4205,14 @@ enum nl80211_feature_flags {
/**
* enum nl80211_ext_feature_index - bit index of extended features.
*
+ * @NL80211_EXT_FEATURE_OFFCHAN_CAC: This device/driver supports
+ * offchannel Channel Availibility Check(CAC).
* @NUM_NL80211_EXT_FEATURES: number of extended features.
* @MAX_NL80211_EXT_FEATURES: highest extended feature index.
*/
enum nl80211_ext_feature_index {
+ NL80211_EXT_FEATURE_OFFCHAN_CAC,
/* add new features before the definition below */
NUM_NL80211_EXT_FEATURES,
MAX_NL80211_EXT_FEATURES = NUM_NL80211_EXT_FEATURES - 1
@@ -6138,7 +6138,9 @@ static int nl80211_start_radar_detection(struct sk_buff *skb,
if (err)
return err;
- if (netif_carrier_ok(dev))
+ if (wiphy_ext_feature_isset(&rdev->wiphy,
+ NL80211_EXT_FEATURE_OFFCHAN_CAC) &&
+ netif_carrier_ok(dev))
return -EBUSY;
if (wdev->cac_started)
Checking for carrier state during start_radar_detection is needed only for devices which support offchannel CAC. This patch provides this additional check of extended feature offchannel CAC support while checking for carrier state. Signed-off-by: Avinash Patil <patila@marvell.com> --- include/uapi/linux/nl80211.h | 3 +++ net/wireless/nl80211.c | 4 +++- 2 files changed, 6 insertions(+), 1 deletion(-)