id.h File Reference

simple interface for managing node id More...

#include <stdint.h>

Go to the source code of this file.

Classes
struct	nodeid_t

Functions
void	co_id_set_from_mac (const unsigned char *mac, int mac_size)
	sets node id using last four bytes of device's MAC address More...
void	co_id_set_from_int (const uint32_t n)
	Converts node id from host byte order to network byte order. More...
nodeid_t	co_id_get (void)
	Returns nodeid.

Detailed Description

simple interface for managing node id

Author

Josh King (jheretic), jking.nosp@m.@cha.nosp@m.mbana.nosp@m..net

Function Documentation

void co_id_set_from_int

(

const uint32_t

n

)

Converts node id from host byte order to network byte order.

Parameters

n	the node id (4 bytes)

Referenced by main().

                                          {
  nodeid.id = htonl(n);
  return;
}

void co_id_set_from_mac	(	const unsigned char *	mac,
		int	mac_size
	)

sets node id using last four bytes of device's MAC address

Parameters

mac	the MAC address of the device
mac_size	the size of the MAC address

                                                                {
  nodeid.id = 0;
  CHECK(mac_size == 6, "MAC size is not six.");
  DEBUG("Received MAC Address : %02x:%02x:%02x:%02x:%02x:%02x\n",
                mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
  /* Load last four bytes of MAC address into nodeid struct*/
  for(int i = 0; i < 4; i++) {
    nodeid.bytes[i] = mac[i + 2];
  }
error:
  return;
}