address.h

ns2 中802.11 mac层的实现代码！

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#ifndef ns_addr_params
#define ns_addr_params

#include "config.h"


class Address : public TclObject {
 public:
	static Address& instance() { return (*instance_); }
	Address();
	~Address();
	char *print_nodeaddr(int address);
	char *print_portaddr(int address);
	char *get_subnetaddr(int address);
	int   get_lastaddr(int address);
	int   get_nodeaddr(int address);
	int   str2addr(const char *str) const;
	int   create_ipaddr(int nodeid, int portid);
	int   hier_addr(int address, int level);

	inline int nodeshift() {return NodeShift_[levels_];}
	inline int nodemask() {return NodeMask_[levels_];}
	inline int set_word_field(int word, int field, int shift, int mask) const {
		return (((field & mask)<<shift) | ((~(mask << shift)) & word));
	}
	// bpl_ or bits per level, 	
	// e.g 32 for level=1, 10/11/11 for level=3.
	// used to check validity of address-str.
	int *bpl_;
	int *NodeShift_;
	int *NodeMask_;
	int McastShift_;
	int McastMask_;
	int levels_;
 protected:
	int command(int argc, const char*const* argv);
	static Address* instance_;
	
};

#endif /* ns_addr_params */