SilcPacketType silc_packet_parse(SilcPacketContext *ctx);

    Parses the packet. This is called when a whole packet is ready to be
    parsed. The buffer sent must be already decrypted before calling this 
    function. The len argument must be the true length of the packet. This 
    function returns the type of the packet. The data section of the 
    buffer is parsed, not head or tail sections.