netq.h

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/* netq.h -- Simple packet queue
 *
 * Copyright (C) 2010--2012 Olaf Bergmann <bergmann@tzi.org>
 *
 * This file is part of the library tinyDTLS. Please see the file
 * LICENSE for terms of use.
 */

#ifndef _DTLS_NETQ_H_
#define _DTLS_NETQ_H_

#include "tinydtls.h"
#include "global.h"
#include "dtls.h"
#include "dtls_time.h"

#ifndef NETQ_MAXCNT
#ifdef DTLS_ECC
#define NETQ_MAXCNT 5 
#elif defined(DTLS_PSK)
#define NETQ_MAXCNT 3 
#endif
#endif

typedef unsigned char netq_packet_t[DTLS_MAX_BUF];

typedef struct netq_t {
  struct netq_t *next;

  clock_time_t t;           
  unsigned int timeout;     
  dtls_peer_t *peer;        
  uint16_t epoch;
  uint8_t type;
  unsigned char retransmit_cnt; 
  size_t length;        
#ifndef WITH_CONTIKI
  unsigned char data[];     
#else
  netq_packet_t data;       
#endif
} netq_t;

#ifndef WITH_CONTIKI
static inline void netq_init()
{ }
#else
void netq_init();
#endif

int netq_insert_node(list_t queue, netq_t *node);

void netq_node_free(netq_t *node);

void netq_delete_all(list_t queue);

netq_t *netq_node_new(size_t size);

netq_t *netq_head(list_t queue);

netq_t *netq_next(netq_t *p);
void netq_remove(list_t queue, netq_t *p);

netq_t *netq_pop_first(list_t queue);

#endif /* _DTLS_NETQ_H_ */