kfifo.h

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#ifndef __KFIFO_H__
#define __KFIFO_H__
 
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
 
struct kfifo {
    int start;
    int end;
    int count;
    void *data;
    size_t size;
    size_t esize;
    size_t header_size;
    size_t payload_size;
};
 
void kfifo_init(struct kfifo *fifo, void *data, size_t esize, size_t size);
 
struct kfifo *kfifo_alloc(size_t nmem, size_t size);
 
void kfifo_free(struct kfifo *fifo);
 
void kfifo_in(struct kfifo *fifo, const void *data, size_t n);
 
void kfifo_out(struct kfifo *fifo, void *data, size_t n);
 
void kfifo_out_peek(struct kfifo *fifo, void *data, size_t n);
 
void kfifo_dma_in_prepare(struct kfifo *fifo, char **data_ptr);
 
void kfifo_dma_in_finish(struct kfifo *fifo, size_t n);
 
void kfifo_dma_out_prepare(struct kfifo *fifo, char **data_ptr, size_t *n);
 
void kfifo_dma_out_finish(struct kfifo *fifo);
 
void kfifo_put(struct kfifo *fifo, void *data);
 
void kfifo_get(struct kfifo *fifo, void *data);
 
void kfifo_peek(struct kfifo *fifo, void *data);
 
size_t kfifo_peek_len(struct kfifo *fifo);
 
void kfifo_skip(struct kfifo *fifo);
 
size_t kfifo_avail(struct kfifo *fifo);
 
size_t kfifo_len(struct kfifo *fifo);
 
size_t kfifo_esize(struct kfifo *fifo);
 
size_t kfifo_size(struct kfifo *fifo);
 
size_t kfifo_header_size(void);
 
bool kfifo_is_empty(struct kfifo *fifo);
 
bool kfifo_is_full(struct kfifo *fifo);
 
#endif