group__periodic__functions.html

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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>
19.02.2002</dl>This function checks if receive-buffer overflow has happened. If it did, NIC is reinitialized to ensure proper operation.
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Invoke this function periodically to ensure proper operation under heavy load. <dl compact><dt><b>Examples: </b></dt><dd>
<a class="el" href="main__demo_8c-example.html#a17">main_demo.c</a>.</dl>
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Definition at line <a class="el" href="ethernet_8c-source.html#l00393">393</a> of file <a class="el" href="ethernet_8c-source.html">ethernet.c</a>.
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References <a class="el" href="ethernet_8h-source.html#l00088">BOUNDARY</a>, <a class="el" href="ethernet_8h-source.html#l00085">CR</a>, <a class="el" href="ethernet_8h-source.html#l00113">CURR</a>, <a class="el" href="ethernet_8c-source.html#l00198">inNE2000()</a>, <a class="el" href="ethernet_8h-source.html#l00095">ISR</a>, <a class="el" href="ethernet_8c-source.html#l00080">NE2000CurrPktPtr</a>, <a class="el" href="ethernet_8c-source.html#l00079">NE2000NextPktPtr</a>, <a class="el" href="ethernet_8c-source.html#l00118">outNE2000()</a>, <a class="el" href="ethernet_8h-source.html#l00098">RBCR0</a>, and <a class="el" href="ethernet_8h-source.html#l00101">TCR</a>.    </td>
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<a name="a2" doxytag="icmp.c::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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<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. <dl compact><dt><b>Examples: </b></dt><dd>
<a class="el" href="main__demo_8c-example.html#a13">main_demo.c</a>.</dl>
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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="a3" doxytag="ip.h::process_ip_in"></a><p>
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          <td class="md" nowrap valign="top"> INT16 process_ip_in </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">struct <a class="el" href="structethernet__frame.html">ethernet_frame</a> *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp; <em>frame</em>          </td>
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<dl compact><dt><b>Author: </b></dt><dd>
 <ul>
<li> Jari Lahti </ul>
</dl><dl compact><dt><b>Date: </b></dt><dd>
11.06.2002 </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 <a class="el" href="structethernet__frame.html">ethernet_frame</a> structure holding information about the received frame that carries IP datagram. </td></tr>
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</dl><dl compact><dt><b>Returns: </b></dt><dd>
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<li> -1 - IP packet not OK <li> &gt;0 - Length of next layer data (IP packet OK)</ul>
</dl>Process received IP packet by checking necessary header information and storing it accordingly to received_ip_packet variable. If everything checks out, return length of the data carried in the IP datagram (for higher-level protocols), otherwise return -1. <dl compact><dt><b>Examples: </b></dt><dd>
<a class="el" href="main__demo_8c-example.html#a12">main_demo.c</a>.</dl>
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Definition at line <a class="el" href="ip_8c-source.html#l00115">115</a> of file <a class="el" href="ip_8c-source.html">ip.c</a>.
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References <a class="el" href="arp_8c-source.html#l00552">arp_add()</a>, <a class="el" href="arp_8h-source.html#l00196">ARP_TEMP_IP</a>, <a class="el" href="ethernet_8h-source.html#l00161">ethernet_frame::buf_index</a>, <a class="el" href="ip_8h-source.html#l00126">ip_frame::buf_index</a>, <a class="el" href="ip_8h-source.html#l00122">ip_frame::checksum</a>, <a class="el" href="ethernet_8h-source.html#l00144">ethernet_frame::destination</a>, <a class="el" href="ip_8h-source.html#l00124">ip_frame::dip</a>, <a class="el" href="ip_8h-source.html#l00119">ip_frame::frags</a>, <a class="el" href="ethernet_8h-source.html#l00152">ethernet_frame::frame_size</a>, <a class="el" href="ip_8h-source.html#l00118">ip_frame::id</a>, <a class="el" href="ip_8c-source.html#l00474">ip_check_cs()</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="ip_8h-source.html#l00125">ip_frame::opt</a>, <a class="el" href="ip_8h-source.html#l00070">PHY_ADR_LEN</a>, <a class="el" href="ethernet_8h-source.html#l00155">ethernet_frame::protocol</a>, <a class="el" href="ip_8h-source.html#l00121">ip_frame::protocol</a>, <a class="el" href="ethernet_8h-source.html#l00080">PROTOCOL_IP</a>, <a class="el" href="system_8h-source.html#l00210">RECEIVE_NETWORK_B</a>, <a class="el" href="ip_8h-source.html#l00123">ip_frame::sip</a>, <a class="el" href="ethernet_8h-source.html#l00148">ethernet_frame::source</a>, <a class="el" href="ip_8h-source.html#l00117">ip_frame::tlen</a>, <a class="el" href="ip_8h-source.html#l00116">ip_frame::tos</a>, <a class="el" href="system_8h-source.html#l00078">TRUE</a>, <a class="el" href="ip_8h-source.html#l00120">ip_frame::ttl</a>, and <a class="el" href="ip_8h-source.html#l00115">ip_frame::vihl</a>.    </td>
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<a name="a4" doxytag="tcp_ip.h::tcp_poll"></a><p>
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          <td class="md" nowrap valign="top"> void tcp_poll </td>
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