net: if_arp: use define instead of hard-coded value

Hakon-Bugge · davem330 · commit 6a12709da354 · 2018-09-21T19:22:32.000-07:00
uapi/linux/if_arp.h includes linux/netdevice.h, which uses
IFNAMSIZ. Hence, use it instead of hard-coded value.

Signed-off-by: Håkon Bugge &lt;haakon.bugge@oracle.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
diff --git a/include/uapi/linux/if_arp.h b/include/uapi/linux/if_arp.h
@@ -118,7 +118,7 @@ struct arpreq {
 	struct sockaddr	arp_ha;		/* hardware address		 */
 	int		arp_flags;	/* flags			 */
 	struct sockaddr arp_netmask;    /* netmask (only for proxy arps) */
-	char		arp_dev[16];
+	char		arp_dev[IFNAMSIZ];
 };
 
 struct arpreq_old {
