tcp_account_for_send
tcp_account_for_send(tp, len, (tp->snd_nxt != tp->snd_max), 0, hw_tls);
tcp_account_for_send(tp, len, (rsm != NULL), doing_tlp, hw_tls);
tcp_account_for_send(tp, len, 1, doing_tlp, rsm->r_hw_tls);
tcp_account_for_send(tp, len, 0, 0, rack->r_ctl.fsb.hw_tls);
tcp_account_for_send(tp, len, (rsm != NULL), doing_tlp, hw_tls);
void tcp_account_for_send(struct tcpcb *, uint32_t, uint8_t, uint8_t, bool);