1a">tcp_enqueue_flags</a> : creates SYN-only or FIN-only segments</li>
<li><a class="el" href="group__tcp__raw.html#ga0cbcc6d628f644a530daf629fa3e5f7f">tcp_output</a> / tcp_output_segment : finalize the tcp header (e.g. sequence numbers, options, checksum) and output to IP</li>
<li>the various tcp_rexmit functions shuffle around segments between the unsent an unacked lists to retransmit them</li>
<li>tcp_create_segment and tcp_pbuf_prealloc allocate pbuf and segment for these functions</li>
</ul>
</li>
<li>