IP dissector does not recognize my protocol

I'm developing a dissector/protocol as a plugin above Network layer so that The IP dissector will dissect all the IP headers and will look at the "protocol" field to pass the payload to my protocol. let's say the protocol number is " 254 ".
It runs over IP.
What are all the steps needed to do , so that the IP dissector recognize the protocol and it will pass the payload to my protocol ?

This is not a heuristic dissector.

EDIT : my packet-temp.c file contains :

#include "config.h"

#include < epan/packet.h>

#define IP_PROTO_TEMP 254
static int proto_temp = -1;

static void dissect_temp(tvbuff_t *tvb, packet_info *pinfo, proto_tree     *tree)
{
      col_set_str(pinfo->cinfo, COL_PROTOCOL, "TEMP");
      /* Clear out stuff in the info column */
      col_clear(pinfo->cinfo, COL_INFO);
 }

 void proto_register_temp(void)
 {
       proto_temp = proto_register_protocol (
                 "TEMP Protocol", /* name       */
                 "TEMP",      /* short name */
                 "temp"       /* abbrev     */
                 );
  }

  void proto_reg_handoff_temp(void)
 {
      static dissector_handle_t temp_handle;

      temp_handle = create_dissector_handle(dissect_temp, proto_temp);
      dissector_add_uint("ip.port", IP_PROTO_TEMP , temp_handle);
 }

Thanks.