DFS: Allow wpa_supplicant AP mode to use non-offloaded DFS

This extends the hostapd-like setup of DFS-in-userspace for
wpa_supplicant AP mode operations.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>

src/drivers/driver_nl80211.c

@@ -4301,7 +4301,8 @@ static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
 		return -1;
 	}
 
-	if (nl80211_set_channel(drv->first_bss, &params->freq, 0)) {
+	if (params->freq.freq &&
+	    nl80211_set_channel(drv->first_bss, &params->freq, 0)) {
 		if (old_mode != nlmode)
 			wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
 		nl80211_remove_monitor_interface(drv);

wpa_supplicant/ap.c

@@ -166,6 +166,13 @@ static int wpa_supplicant_conf_ap(struct wpa_supplicant *wpa_s,
 
 	wpa_supplicant_conf_ap_ht(wpa_s, ssid, conf);
 
+	if (ieee80211_is_dfs(ssid->frequency) && wpa_s->conf->country[0]) {
+		conf->ieee80211h = 1;
+		conf->ieee80211d = 1;
+		conf->country[0] = wpa_s->conf->country[0];
+		conf->country[1] = wpa_s->conf->country[1];
+	}
+
 #ifdef CONFIG_P2P
 	if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G &&
 	    (ssid->mode == WPAS_MODE_P2P_GO ||
@@ -567,6 +574,9 @@ int wpa_supplicant_create_ap(struct wpa_supplicant *wpa_s,
 	else
 		params.uapsd = -1;
 
+	if (ieee80211_is_dfs(params.freq.freq))
+		params.freq.freq = 0; /* set channel after CAC */
+
 	if (wpa_drv_associate(wpa_s, &params) < 0) {
 		wpa_msg(wpa_s, MSG_INFO, "Failed to start AP functionality");
 		return -1;