bsd: Compute the RSSI level

Signed-hostap: Rui Paulo <rpaulo@FreeBSD.org>

src/drivers/driver_bsd.c

@@ -1336,6 +1336,11 @@ wpa_driver_bsd_add_scan_entry(struct wpa_scan_results *res,
 	result->caps = sr->isr_capinfo;
 	result->qual = sr->isr_rssi;
 	result->noise = sr->isr_noise;
+	/*
+	 * the rssi value reported by the kernel is in 0.5dB steps relative to
+	 * the reported noise floor. see ieee80211_node.h for details.
+	 */
+	result->level = sr->isr_rssi / 2 + sr->isr_noise;
 
 	pos = (u8 *)(result + 1);