renamed capwap directory to cw.

FossilOrigin-Name: 8a43dd9d05a4cb73210243ddd8df2a26f16c7ef2c4d4e36ab446de1f65d88223

src/cw/sock_getifhwaddr.c

@@ -0,0 +1,39 @@
+
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#ifdef AF_LINK
+#   include <net/if_dl.h>
+#endif
+#ifdef AF_PACKET
+#   include <netpacket/packet.h>
+#endif
+
+#include "sock.h"
+
+
+int sock_getifhwaddr(const char *ifname, uint8_t * hwaddr, uint8_t * addrlen)
+{
+	struct sockaddr_storage sa;
+	uint8_t *src;
+
+#ifdef AF_PACKET	
+	if (!sock_getifaddr(ifname,AF_PACKET,0,(struct sockaddr*)&sa))
+		return 0;
+	*addrlen = ((struct sockaddr_ll*)&sa)->sll_halen;
+	src = ((struct sockaddr_ll*)&sa)->sll_addr;
+#endif
+
+#ifdef AF_LINK
+	if (!sock_getifaddr(ifname,AF_LINK,0,(struct sockaddr*)&sa))
+		return 0;
+	struct sockaddr_dl *sdl = ((struct sockaddr_dl*)&sa);
+	*addrlen = sdl->sdl_alen;
+	src = ((uint8_t*)sdl->sdl_data)+sdl->sdl_nlen;
+#endif
+
+
+	memcpy(hwaddr,src,*addrlen);
+	return 1;
+}