nl80211: Move CS supported flag to wpa_driver_capa

Replace channel_switch_supported flag of the
wpa_driver_nl80211_data by WPA_DRIVER_FLAGS_AP_CSA inside
wpa_driver_capa.flags. It makes more sense and also can
be accessed by wpa_supplicant.

Signed-hostap: Andrei Otcheretianski <andrei.otcheretianski@intel.com>

src/drivers/driver.h

@@ -932,6 +932,8 @@ struct wpa_driver_capa {
 #define WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE		0x20000000
 /* Driver supports QoS Mapping */
 #define WPA_DRIVER_FLAGS_QOS_MAPPING			0x40000000
+/* Driver supports CSA in AP mode */
+#define WPA_DRIVER_FLAGS_AP_CSA				0x80000000
 	unsigned int flags;
 
 	int max_scan_ssids;

src/drivers/driver_nl80211.c

@@ -300,7 +300,6 @@ struct wpa_driver_nl80211_data {
 	unsigned int hostapd:1;
 	unsigned int start_mode_ap:1;
 	unsigned int start_iface_up:1;
-	unsigned int channel_switch_supported:1;
 
 	u64 remain_on_chan_cookie;
 	u64 send_action_cookie;
@@ -3628,6 +3627,9 @@ static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
 	if (!drv->capa.max_remain_on_chan)
 		drv->capa.max_remain_on_chan = 5000;
 
+	if (info->channel_switch_supported)
+		drv->capa.flags |= WPA_DRIVER_FLAGS_AP_CSA;
+
 	return 0;
 nla_put_failure:
 	nlmsg_free(msg);
@@ -3670,7 +3672,6 @@ static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
 	drv->device_ap_sme = info.device_ap_sme;
 	drv->poll_command_supported = info.poll_command_supported;
 	drv->data_tx_status = info.data_tx_status;
-	drv->channel_switch_supported = info.channel_switch_supported;
 	if (info.set_qos_map_supported)
 		drv->capa.flags |= WPA_DRIVER_FLAGS_QOS_MAPPING;
 
@@ -11361,7 +11362,7 @@ static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
 		   settings->freq_params.center_freq1,
 		   settings->freq_params.center_freq2);
 
-	if (!drv->channel_switch_supported) {
+	if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
 		wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
 		return -EOPNOTSUPP;
 	}