WIFI-14522: qdisk didn't create successfully for some interfaces while using dhcpinject

Program sometimes did not setup tc qdisc on some interfaces when creating SSID with dhcpinject enabled initially.

Added delayed startup.

Signed-off-by: alex18_huang <alex18_huang@accton.com>

feeds/ucentral/udhcpinject/src/udhcpinject.c

@@ -37,9 +37,6 @@ void cleanup_tc() {
         snprintf(cmd, sizeof(cmd), "tc filter del dev %s ingress pref 32 2>/dev/null",
                  iface_map[i].iface);
         system(cmd);
-        // snprintf(cmd, sizeof(cmd), "tc qdisc del dev %s ingress 2>/dev/null",
-        //          iface_map[i].iface);
-        // system(cmd);
     }
 }
 
@@ -261,7 +258,6 @@ int parse_ports(const char *port_list) {
     return 0;
 }
 
-// Function to setup tc rules (same as before but using iface_map)
 int setup_tc() {
     char cmd[1024];
 
@@ -314,7 +310,7 @@ void signal_handler(int sig) {
         exit(0);
     } else if (sig == SIGHUP) {
         syslog(LOG_INFO, "Received reload signal, reconfiguring...\n");
-        
+        sleep(5);
         // Clean up existing resources
         cleanup_tc();
         
@@ -565,6 +561,8 @@ int main(int argc, char *argv[]) {
     signal(SIGTERM, signal_handler);
     signal(SIGHUP, signal_handler);
 
+    sleep(5);
+
     provided_ssids = getenv("SSIDs");
     syslog(LOG_INFO, "Provided SSIDs: %s\n", provided_ssids);
     if (!provided_ssids && argc > 1) {