PF_RS_NR
{ .type = PF_RS_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
snl_add_msg_attr_u32(&nw, PF_RS_NR, nr);
{ .type = PF_RS_NR, .off = _OUT(nr), .cb = nlattr_get_uint32 },
nlattr_add_u32(nw, PF_RS_NR, attrs.nr);