* Copyright 2005, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
* Distributed under the terms of the MIT License.
*/
#ifndef PACKET_BUFFER_H
#define PACKET_BUFFER_H
#include <KernelExport.h>
#include <OS.h>
struct ring_buffer;
* implementation that can be used in interrupts on top of the
* ring_buffer implementation provided by the kernel.
* It uses a spinlock for synchronization.
*
* IOW if you don't have such high restrictions in your environment,
* you better don't want to use it at all.
*/
struct packet_buffer {
struct ring_buffer* buffer;
spinlock lock;
};
struct packet_buffer* create_packet_buffer(size_t size);
void delete_packet_buffer(struct packet_buffer* buffer);
void packet_buffer_clear(struct packet_buffer* buffer);
size_t packet_buffer_readable(struct packet_buffer* buffer);
size_t packet_buffer_writable(struct packet_buffer *buffer);
void packet_buffer_flush(struct packet_buffer* buffer, size_t bytes);
size_t packet_buffer_read(struct packet_buffer* buffer, uint8* data, size_t
length);
size_t packet_buffer_write(struct packet_buffer* buffer, const uint8* data,
size_t length);
#endif
