tcp__ip_8h.html

Freescale mcu OpenTCP-1.0.4.doc.html.zip 文档

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TCP/IP stack has received correct acknowledgment packet for the  previously sent data and is informing the application about it. After this event, application can send new data packet to remote host. 
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Definition at line <a class="el" href="tcp__ip_8h-source.html#l00428">428</a> of file <a class="el" href="tcp__ip_8h-source.html">tcp_ip.h</a>.
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Referenced by <a class="el" href="tcp_8c-source.html#l01250">process_tcp_in()</a>.    </td>
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<a name="a59" doxytag="tcp_ip.h::TCP_EVENT_REGENERATE"></a><p>
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          <td class="md" nowrap valign="top"> #define TCP_EVENT_REGENERATE&nbsp;&nbsp;&nbsp;32
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Previously sent data packet was not acknowledged (or the acknowledgment packet did not arrive) so retransmission needs to be peformed. Application must resend the data that was sent in the previous packet. 
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Definition at line <a class="el" href="tcp__ip_8h-source.html#l00437">437</a> of file <a class="el" href="tcp__ip_8h-source.html">tcp_ip.h</a>.
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Referenced by <a class="el" href="tcp_8c-source.html#l00808">tcp_poll()</a>.    </td>
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<a name="a60" doxytag="tcp_ip.h::TCP_EVENT_DATA"></a><p>
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          <td class="md" nowrap valign="top"> #define TCP_EVENT_DATA&nbsp;&nbsp;&nbsp;64
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TCP received some data from remote host and is informing application that it is available for reading from the Ethernet controller. 
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Definition at line <a class="el" href="tcp__ip_8h-source.html#l00445">445</a> of file <a class="el" href="tcp__ip_8h-source.html">tcp_ip.h</a>.
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Referenced by <a class="el" href="tcp_8c-source.html#l01250">process_tcp_in()</a>.    </td>
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<a name="a61" doxytag="tcp_ip.h::TCP_APP_OFFSET"></a><p>
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          <td class="md" nowrap valign="top"> #define TCP_APP_OFFSET&nbsp;&nbsp;&nbsp;MIN_TCP_HLEN
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This value defines offset that TCP applications must use when writing to transmit buffer. This many bytes will be used <b>before</b> the first byte of applications data in the  transmit buffer to store TCP header. 
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Definition at line <a class="el" href="tcp__ip_8h-source.html#l00459">459</a> of file <a class="el" href="tcp__ip_8h-source.html">tcp_ip.h</a>.
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Referenced by <a class="el" href="smtp__client_8c-source.html#l00155">smtpc_init()</a>.    </td>
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<a name="a62" doxytag="tcp_ip.h::UDP_APP_OFFSET"></a><p>
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          <td class="md" nowrap valign="top"> #define UDP_APP_OFFSET&nbsp;&nbsp;&nbsp;UDP_HLEN
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This value defines offset that UDP applications must use when writing to transmit buffer. This many bytes will be used <b>before</b> the first byte of applications data in the  transmit buffer to store UDP header. 
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Definition at line <a class="el" href="tcp__ip_8h-source.html#l00471">471</a> of file <a class="el" href="tcp__ip_8h-source.html">tcp_ip.h</a>.
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Referenced by <a class="el" href="bootp_8c-source.html#l00183">bootpc_run()</a>, <a class="el" href="dhcpc_8c-source.html#l00389">dhcpc_send_message()</a>, and <a class="el" href="dns_8c-source.html#l00445">get_host_by_name()</a>.    </td>
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<hr><h2>Function Documentation</h2>
<a name="a63" doxytag="tcp_ip.h::process_icmp_in"></a><p>
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          <td class="md" nowrap valign="top"> INT16 process_icmp_in </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">struct <a class="el" href="structip__frame.html">ip_frame</a> *&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>frame</em>, </td>
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          <td class="md" nowrap>UINT16&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>len</em></td>
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          <td class="md">)&nbsp;</td>
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<dl compact><dt><b>Author: </b></dt><dd>
 <ul>
<li> Jari Lahti (<a href="mailto:[e-mail]">[e-mail]</a>) </ul>
</dl><dl compact><dt><b>Date: </b></dt><dd>
08.07.2002 </dl><dl compact><dt><b>Parameters: </b></dt><dd>
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<tr><td valign=top><em>frame</em>&nbsp;</td><td>
- pointer to received IP frame structure </td></tr>
<tr><td valign=top><em>len</em>&nbsp;</td><td>
- length of the received IP datagram (in bytes) </td></tr>
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</dl><dl compact><dt><b>Returns: </b></dt><dd>
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<li> -1 - packet not OK (not proper ICMP or not ICMP at all) <li> &gt;=0 - packet OK</ul>
</dl>Invoke process_icmp_in whenever IP datagram containing ICMP message is detected (see <a class="el" href="main__demo_8c.html">main_demo.c</a> for example main loop implementing this).
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This function simply checks correctnes of received ICMP message and send ICMP replies when requested. 
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Definition at line <a class="el" href="icmp_8c-source.html#l00097">97</a> of file <a class="el" href="icmp_8c-source.html">icmp.c</a>.
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References <a class="el" href="ip_8h-source.html#l00126">ip_frame::buf_index</a>, <a class="el" href="ip_8h-source.html#l00124">ip_frame::dip</a>, <a class="el" href="ip_8c-source.html#l00539">ip_checksum()</a>, <a class="el" href="ip_8c-source.html#l00582">ip_checksum_buf()</a>, <a class="el" href="ip_8h-source.html#l00072">IP_ICMP</a>, <a class="el" href="system_8h-source.html#l00270">NETWORK_RECEIVE_INITIALIZE</a>, <a class="el" href="system_8h-source.html#l00091">NETWORK_TX_BUFFER_SIZE</a>, <a class="el" href="ip_8c-source.html#l00300">process_ip_out()</a>, <a class="el" href="ip_8h-source.html#l00121">ip_frame::protocol</a>, <a class="el" href="system_8h-source.html#l00210">RECEIVE_NETWORK_B</a>, <a class="el" href="system_8h-source.html#l00220">RECEIVE_NETWORK_BUF</a>, <a class="el" href="ip_8h-source.html#l00123">ip_frame::sip</a>, and <a class="el" href="system_8h-source.html#l00151">TXBUF</a>.    </td>
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<a name="a71" doxytag="tcp_ip.h::udp_getfreeport"></a><p>
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          <td class="md" nowrap valign="top"> UINT16 udp_getfreeport </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">void&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
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<dl compact><dt><b>Author: </b></dt><dd>
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<li> Jari Lahti (<a href="mailto:[e-mail]">[e-mail]</a>) </ul>
</dl><dl compact><dt><b>Date: </b></dt><dd>
19.10.2002 </dl><dl compact><dt><b>Returns: </b></dt><dd>
 <ul>
<li> 0 - no free ports! <li> &gt;0 - free local TCP port number</ul>
</dl>Function attempts to find new local port number that can be used to  establish a connection. 
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Definition at line <a class="el" href="udp_8c-source.html#l00684">684</a> of file <a class="el" href="udp_8c-source.html">udp.c</a>.
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References <a class="el" href="tcp__ip_8h-source.html#l00525">ucb::locport</a>, <a class="el" href="tcp__ip_8h-source.html#l00516">ucb::state</a>, <a class="el" href="tcp__ip_8h-source.html#l00109">UDP_PORTS_END</a>, and <a class="el" href="tcp__ip_8h-source.html#l00258">UDP_STATE_CLOSED</a>.
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Referenced by <a class="el" href="udp_8c-source.html#l00291">udp_open()</a>.    </td>
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<a name="a73" doxytag="tcp_ip.h::process_tcp_out"></a><p>
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          <td class="md" nowrap valign="top"> INT16 process_tcp_out </td>