face.h

Go to the documentation of this file.

/*
 * Copyright (C) 2018 Zhiyi Zhang, Xinyu Ma
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v3.0. See the file LICENSE in the top level
 * directory for more details.
 */

#ifndef FORWARDER_FACE_H_
#define FORWARDER_FACE_H_

#include <stdbool.h>
#include <stdint.h>
#include <stddef.h>
#include "../ndn-enums.h"
#include "../ndn-constants.h"

#define container_of(ptr, type, member) \
  ((type *)((char *)(1 ? (ptr) : &((type *)0)->member) - offsetof(type, member)))

#ifdef __cplusplus
extern "C" {
#endif

struct ndn_face_intf;

typedef int (*ndn_face_intf_up)(struct ndn_face_intf* self);

typedef int (*ndn_face_intf_send)(struct ndn_face_intf* self,
                                  const uint8_t* packet, uint32_t size);

typedef int (*ndn_face_intf_down)(struct ndn_face_intf* self);

typedef void (*ndn_face_intf_destroy)(struct ndn_face_intf* self);

typedef struct ndn_face_intf {
  ndn_face_intf_up up;

  ndn_face_intf_send send;

  ndn_face_intf_down down;

  ndn_face_intf_destroy destroy;

  ndn_table_id_t face_id;

  uint8_t state;

  uint8_t type;
} ndn_face_intf_t;

static inline int
ndn_face_up(ndn_face_intf_t* self)
{
  if (self->state != NDN_FACE_STATE_UP)
    return self->up(self);
  return 0;
}

static inline int
ndn_face_send(ndn_face_intf_t* self, const uint8_t* packet, uint32_t size)
{
  if (self->state != NDN_FACE_STATE_UP)
    self->up(self);
  return self->send(self, packet, size);
}

static inline int
ndn_face_down(ndn_face_intf_t* self)
{
  return self->down(self);
}

static inline void
ndn_face_destroy(ndn_face_intf_t* self)
{
  self->destroy(self);
}

#ifdef __cplusplus
}
#endif

#endif // #define FORWARDER_FACE_H_