selinux: recognize netlink messages for 'ip addrlabel'

In enforcing mode '/sbin/ip addrlabel' results in a SELinux error:
type=SELINUX_ERR msg=audit(1225698822.073:42): SELinux:  unrecognized
netlink message type=74 for sclass=43

The problem is missing RTM_*ADDRLABEL entries in SELinux's netlink
message types table.

Reported in https://bugzilla.redhat.com/show_bug.cgi?id=469423

Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Acked-by:  Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@namei.org>

security/selinux/nlmsgtab.c

@@ -63,6 +63,9 @@ static struct nlmsg_perm nlmsg_route_perms[] =
 	{ RTM_GETANYCAST,	NETLINK_ROUTE_SOCKET__NLMSG_READ  },
 	{ RTM_GETNEIGHTBL,	NETLINK_ROUTE_SOCKET__NLMSG_READ  },
 	{ RTM_SETNEIGHTBL,	NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_NEWADDRLABEL,	NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_DELADDRLABEL,	NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_GETADDRLABEL,	NETLINK_ROUTE_SOCKET__NLMSG_READ  },
 };
 
 static struct nlmsg_perm nlmsg_firewall_perms[] =