wxbuff.h

wimax BS simulation code,implemented under linux.

/*
 * This piece of code is totally free. If any pitfalls found, 
 * please feel free to contact me at [e-mail]
 * THANKS A LOT!
 */

#ifndef _WXBUFF_H
#define _WXBUFF_H


#include "types.h"
#include "list.h"
#include "atomic.h"


struct genmachdr_s;
struct extpackshdr_s;
struct extfragshdr_s;
struct packshdr_s;
struct fragshdr_s;
typedef struct wxbuff_s{
	struct list_head senior;
	struct list_head junior;
	
	uint32_t tolen;
	uint32_t len;
	
	/* control info */
	uint16_t cid;
	struct genmachdr_s *mac;
	union{
		struct extpackshdr_s *ep;
		struct extfragshdr_s *ef;
		struct packshdr_s *p;
		struct fragshdr_s *f;
	};
	
	uint8_t *data;
	uint8_t *beg;///begin
	uint8_t *end;
	uint8_t *tail;
}wxbuff_t;


typedef struct databuff_s{
	uint8_t data[2048];
	struct list_head link;
	atomic_t ref;
}databuff_t;


#define wxbuff_databuff(wxb)	(databuff_t *)((wxb)->data)


extern int32_t wxbuff_pool_init();
extern wxbuff_t * get_wxbuff(wxbuff_t *refwxb);
extern int32_t put_wxbuff(wxbuff_t *wxb);
extern void init_wxbuff(wxbuff_t *wxb);
extern uint8_t * copy_and_free_wxbuff(wxbuff_t *wxb, uint32_t *len);
extern void wxbuff_reserve(wxbuff_t *wxb, uint32_t size);
extern int32_t wxbuff_push(wxbuff_t *wxb, uint8_t *in, uint32_t len);


#endif	/* end of _WXBUFF_H */