/*
 * Copyright (c) 2007-2013 Xilinx, Inc.  All rights reserved.
 *
 * Xilinx, Inc.
 * XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
 * COURTESY TO YOU.  BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS
 * ONE POSSIBLE   IMPLEMENTATION OF THIS FEATURE, APPLICATION OR
 * STANDARD, XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION
 * IS FREE FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE
 * FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION.
 * XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO
 * THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO
 * ANY WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE
 * FROM CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 */

#ifndef __LWIP_PBUF_QUEUE_H_
#define __LWIP_PBUF_QUEUE_H_

#ifdef __cplusplus
extern "C" { 
#endif

#define PQ_QUEUE_SIZE 4096

typedef struct {
	void *data[PQ_QUEUE_SIZE];
	int head, tail, len;
} pq_queue_t;

pq_queue_t*	pq_create_queue();
int 		pq_enqueue(pq_queue_t *q, void *p);
void*		pq_dequeue(pq_queue_t *q);
int		pq_qlength(pq_queue_t *q);

#ifdef __cplusplus
}
#endif

#endif