FLAG_SYN_ACKED
#define FLAG_ACKED (FLAG_DATA_ACKED|FLAG_SYN_ACKED)
tcp_ack_update_rtt(sk, FLAG_SYN_ACKED, rtt_us, -1L, rtt_us, &rs);
flag |= FLAG_SYN_ACKED;
!(flag & (FLAG_CA_ALERT | FLAG_SYN_ACKED))) {
if (flag & FLAG_SYN_ACKED)
#define FLAG_ACKED (FLAG_DATA_ACKED | FLAG_SYN_ACKED)