check_header
res.err = check_header(response, sizeof(*pkg), TB_CFG_PKG_ERROR,
res.err = check_header(pkg, len, type, route);
error = check_header(info);
err = check_header(skb, nh_ofs + sizeof(struct iphdr));
err = check_header(skb, nh_ofs + sizeof(*nh));
err = check_header(skb, nh_ofs + NSH_BASE_HDR_LEN);
err = check_header(skb, nh_ofs + length);
error = check_header(skb, skb->mac_len +
if (check_header(tid, trace, trace_type, trace_size, ioam_ns))