public RdmaMemoryRegion registerMemory(ByteBuffer buffer, 
                                          EnumSet<RdmaAccess> access) throws IOException {
        // TCP doesn't need real memory registration
        return new TcpMemoryRegion(buffer, access);
    }
    
    @Override
    public String getProviderName() {
        return "TCP Fallback";
    }
    
    @Override
    public int getMaxMessageSize() {