무선 네트워크 하시는분들 좀 도와줘요 [활성화(연결)된 ap macaddr 가져오기 - 같이 고민하면서 해결해봐요^^] ㅠㅠ

#include <linux/if_arp.h>
#include <linux/sockios.h>
#include <linux/wireless.h>
 
/*
 * int ap_macaddr(char* strMacAddr)
 */
int
ap_macaddr(char* strMacAddr)
{
	int size;
	int fd, len;
 
	union iwreq_data wreq;
	unsigned char *mac;
 
	fd = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
 
	if (fd == (-1))
		goto __end__;
 
	wreq.ap_addr.sa_family = ARPHRD_ETHER;
	//wireless_send_event(dev, SIOCGIWAP, &wreq, NULL);
	if (ioctl(fd, SIOCGIWAP, &wreq) < 0)
	{
		goto __end__;
	}
 
	mac = (unsigned char *)wreq.addr.sa_data;
 
	fprintf(stderr, "get data%s\n", mac);
 
	memset(strMacAddr, 0, MACSIZE);
 
	size = sprintf(strMacAddr, "%02x%02x%02x%02x%02x%02x",
			mac[0],
			mac[1],
			mac[2],
			mac[3],
			mac[4],	
			mac[5]);
 
	fprintf(stderr, "ap_macaddr:%s\n", strMacAddr);
 
__end__:
 
	if (fd != (-1)) close(fd);
	return size;
}