nl80211: Add support for configuring P2P GO CTWindow

Configure the GO CTWindow on APstart if the driver supports it and this
parameter is set in wpa_supplicant configuration.

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>

src/drivers/driver_nl80211.c

@@ -3439,6 +3439,21 @@ static int wpa_driver_nl80211_set_ap(void *priv,
 			goto fail;
 	}
 
+#ifdef CONFIG_P2P
+	if (params->p2p_go_ctwindow > 0) {
+		if (drv->p2p_go_ctwindow_supported) {
+			wpa_printf(MSG_DEBUG, "nl80211: P2P GO ctwindow=%d",
+				   params->p2p_go_ctwindow);
+			if (nla_put_u8(msg, NL80211_ATTR_P2P_CTWINDOW,
+				       params->p2p_go_ctwindow))
+				goto fail;
+		} else {
+			wpa_printf(MSG_INFO,
+				   "nl80211: Driver does not support CTWindow configuration - ignore this parameter");
+		}
+	}
+#endif /* CONFIG_P2P */
+
 	ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 	if (ret) {
 		wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",

src/drivers/driver_nl80211.h

@@ -144,6 +144,7 @@ struct wpa_driver_nl80211_data {
 	unsigned int addr_changed:1;
 	unsigned int get_features_vendor_cmd_avail:1;
 	unsigned int set_rekey_offload:1;
+	unsigned int p2p_go_ctwindow_supported:1;
 
 	u64 remain_on_chan_cookie;
 	u64 send_action_cookie;

src/drivers/driver_nl80211_capa.c

@@ -71,6 +71,7 @@ struct wiphy_info_data {
 	unsigned int connect_supported:1;
 	unsigned int p2p_go_supported:1;
 	unsigned int p2p_client_supported:1;
+	unsigned int p2p_go_ctwindow_supported:1;
 	unsigned int p2p_concurrent:1;
 	unsigned int channel_switch_supported:1;
 	unsigned int set_qos_map_supported:1;
@@ -365,6 +366,9 @@ static void wiphy_info_feature_flags(struct wiphy_info_data *info,
 		capa->flags |= WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH;
 	}
 
+	if (flags & NL80211_FEATURE_P2P_GO_CTWIN)
+		info->p2p_go_ctwindow_supported = 1;
+
 	if (flags & NL80211_FEATURE_LOW_PRIORITY_SCAN)
 		info->have_low_prio_scan = 1;
 
@@ -827,6 +831,7 @@ 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->p2p_go_ctwindow_supported = info.p2p_go_ctwindow_supported;
 	if (info.set_qos_map_supported)
 		drv->capa.flags |= WPA_DRIVER_FLAGS_QOS_MAPPING;
 	drv->have_low_prio_scan = info.have_low_prio_scan;