[ns] ns_ variable in Multipath Classifier of Node object

[Tatiana Polishchuk]

I'm trying to understand and change the logic of the Multipath Classifier of
the Node object and need help in understanding what are the values of ns_
and ns_(0) variables  in it's definition:


#include "classifier.h"

class MultiPathForwarder : public Classifier {
public:
        MultiPathForwarder() : ns_(0) {}
        virtual int classify(Packet*) {
                int cl;
                int fail = ns_;
                do {
                        cl = ns_++;
                        ns_ %= (maxslot_ + 1);
                } while (slot_[cl] == 0 && ns_ != fail);
                return cl;
        }
private:
        int ns_;
};



Please, help.