TCP_BPF_SYN
if (optname == TCP_BPF_SYN) {
if (optname == TCP_BPF_SYN) {
optname >= TCP_BPF_SYN && optname <= TCP_BPF_SYN_MAC) {
ret = bpf_sock_ops_get_syn(bpf_sock, TCP_BPF_SYN, &op);
ret = bpf_getsockopt(skops, SOL_TCP, TCP_BPF_SYN, &hdr, sizeof(hdr));