br_mrp_get_port
if (!br_mrp_get_port(br, instance->p_ifindex) ||
!br_mrp_get_port(br, instance->s_ifindex))
p = br_mrp_get_port(br, instance->p_ifindex);
p = br_mrp_get_port(br, instance->s_ifindex);
if (!br_mrp_get_port(br, role->i_ifindex))
p = br_mrp_get_port(br, role->i_ifindex);