wpa_supplicant: Support dynamic update of wowlan_triggers

Previously, wowlan_triggers were updated in kernel only during startup.
Also update it whenever it is set from the control interface.

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

wpa_supplicant/config.c

@@ -4550,7 +4550,7 @@ static const struct global_parse_data global_fields[] = {
 	{ INT(sched_scan_start_delay), 0 },
 	{ INT(tdls_external_control), 0},
 	{ STR(osu_dir), 0 },
-	{ STR(wowlan_triggers), 0 },
+	{ STR(wowlan_triggers), CFG_CHANGED_WOWLAN_TRIGGERS },
 	{ INT(p2p_search_delay), 0},
 	{ INT(mac_addr), 0 },
 	{ INT(rand_addr_lifetime), 0 },

wpa_supplicant/config.h

@@ -336,6 +336,7 @@ struct wpa_cred {
 #define CFG_CHANGED_NFC_PASSWORD_TOKEN BIT(15)
 #define CFG_CHANGED_P2P_PASSPHRASE_LEN BIT(16)
 #define CFG_CHANGED_SCHED_SCAN_PLANS BIT(17)
+#define CFG_CHANGED_WOWLAN_TRIGGERS BIT(18)
 
 /**
  * struct wpa_config - wpa_supplicant configuration data

wpa_supplicant/wpa_supplicant.c

@@ -6018,6 +6018,16 @@ void wpa_supplicant_update_config(struct wpa_supplicant *wpa_s)
 	if (wpa_s->conf->changed_parameters & CFG_CHANGED_SCHED_SCAN_PLANS)
 		wpas_sched_scan_plans_set(wpa_s, wpa_s->conf->sched_scan_plans);
 
+	if (wpa_s->conf->changed_parameters & CFG_CHANGED_WOWLAN_TRIGGERS) {
+		struct wpa_driver_capa capa;
+		int res = wpa_drv_get_capa(wpa_s, &capa);
+
+		if (res == 0 && wpas_set_wowlan_triggers(wpa_s, &capa) < 0)
+			wpa_printf(MSG_ERROR,
+				   "Failed to update wowlan_triggers to '%s'",
+				   wpa_s->conf->wowlan_triggers);
+	}
+
 #ifdef CONFIG_WPS
 	wpas_wps_update_config(wpa_s);
 #endif /* CONFIG_WPS */