

/**
 * \file
 *         Header file for Rime's single-hop unicast
 * \author
 *         Adam Dunkels <adam@sics.se>
 */

/**
 * \addtogroup rime
 * @{
 */

/**
 * \defgroup rimeuc Single-hop unicast
 * @{
 *
 * The unicast module sends a packet to an identified single-hop
 * neighbor.  The unicast primitive uses the broadcast primitive and
 * adds the single-hop receiver address attribute to the outgoing
 * packets. For incoming packets, the unicast module inspects the
 * single-hop receiver address attribute and discards the packet if
 * the address does not match the address of the node.
 *
 * \section unicast-channels Channels
 *
 * The unicast module uses 1 channel.
 *
 */

#ifndef UNICAST_H_
#define UNICAST_H_

#include "net/rime/broadcast.h"

struct unicast_conn;

#define UNICAST_ATTRIBUTES   { PACKETBUF_ADDR_RECEIVER, PACKETBUF_ADDRSIZE }, \
                        BROADCAST_ATTRIBUTES

struct unicast_callbacks {
  void (* recv)(struct unicast_conn *c, const linkaddr_t *from);
  void (* sent)(struct unicast_conn *ptr, int status, int num_tx);
};

struct unicast_conn {
  struct broadcast_conn c;
  const struct unicast_callbacks *u;
};

void unicast_open(struct unicast_conn *c, uint16_t channel,
	      const struct unicast_callbacks *u);
void unicast_close(struct unicast_conn *c);

int unicast_send(struct unicast_conn *c, const linkaddr_t *receiver);

#endif /* UNICAST_H_ */
/** @} */
/** @} */
