<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.16"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>UbixOS: Loopback interface</title>
<link href="../../tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="../../jquery.js"></script>
<script type="text/javascript" src="../../dynsections.js"></script>
<link href="../../navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="../../resize.js"></script>
<script type="text/javascript" src="../../navtreedata.js"></script>
<script type="text/javascript" src="../../navtree.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
$(document).ready(initResizable);
/* @license-end */</script>
<link href="../../doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td id="projectalign" style="padding-left: 0.5em;">
<div id="projectname">UbixOS
 <span id="projectnumber">2.0</span>
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.16 -->
<script type="text/javascript" src="../../menudata.js"></script>
<script type="text/javascript" src="../../menu.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
$(function() {
initMenu('../../',false,false,'search.php','Search');
});
/* @license-end */</script>
<div id="main-nav"></div>
</div><!-- top -->
<div id="side-nav" class="ui-resizable side-nav-resizable">
<div id="nav-tree">
<div id="nav-tree-contents">
<div id="nav-sync" class="sync"></div>
</div>
</div>
<div id="splitbar" style="-moz-user-select:none;"
class="ui-resizable-handle">
</div>
</div>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
$(document).ready(function(){initNavTree('d2/da2/group__lwip__opts__loop.html','../../');});
/* @license-end */
</script>
<div id="doc-content">
<div class="header">
<div class="summary">
<a href="#define-members">Macros</a> </div>
<div class="headertitle">
<div class="title">Loopback interface<div class="ingroups"><a class="el" href="../../d9/de2/group__lwip__opts.html">Options (lwipopts.h)</a> » <a class="el" href="../../df/def/group__lwip__opts__netif.html">NETIF</a></div></div> </div>
</div><!--header-->
<div class="contents">
<div class="dynheader">
Collaboration diagram for Loopback interface:</div>
<div class="dyncontent">
<div class="center"><img src="../../d2/da2/group__lwip__opts__loop.png" border="0" usemap="#d2_2da2_2group____lwip____opts____loop" alt=""/></div>
<map name="d2_2da2_2group____lwip____opts____loop" id="d2_2da2_2group____lwip____opts____loop">
<area shape="rect" title=" " alt="" coords="112,5,243,31"/>
<area shape="rect" href="../../df/def/group__lwip__opts__netif.html" title=" " alt="" coords="5,5,64,31"/>
</map>
</div>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a>
Macros</h2></td></tr>
<tr class="memitem:gaa2b1f736373cd896e212644aa453fbaf"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d2/da2/group__lwip__opts__loop.html#gaa2b1f736373cd896e212644aa453fbaf">LWIP_HAVE_LOOPIF</a>   <a class="el" href="../../d2/da2/group__lwip__opts__loop.html#ga724a0ea765d5a47d026d529725f31c01">LWIP_NETIF_LOOPBACK</a></td></tr>
<tr class="separator:gaa2b1f736373cd896e212644aa453fbaf"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaacc3ad5d0a771d45fb0a3e3a09b1dbea"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d2/da2/group__lwip__opts__loop.html#gaacc3ad5d0a771d45fb0a3e3a09b1dbea">LWIP_LOOPBACK_MAX_PBUFS</a>   0</td></tr>
<tr class="separator:gaacc3ad5d0a771d45fb0a3e3a09b1dbea"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga10a878b390c2fbe421d82502001c7300"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d2/da2/group__lwip__opts__loop.html#ga10a878b390c2fbe421d82502001c7300">LWIP_LOOPIF_MULTICAST</a>   0</td></tr>
<tr class="separator:ga10a878b390c2fbe421d82502001c7300"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga724a0ea765d5a47d026d529725f31c01"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d2/da2/group__lwip__opts__loop.html#ga724a0ea765d5a47d026d529725f31c01">LWIP_NETIF_LOOPBACK</a>   0</td></tr>
<tr class="separator:ga724a0ea765d5a47d026d529725f31c01"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaa28d13ddd5281b1912276991e7ea58c5"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d2/da2/group__lwip__opts__loop.html#gaa28d13ddd5281b1912276991e7ea58c5">LWIP_NETIF_LOOPBACK_MULTITHREADING</a>   (!<a class="el" href="../../dc/dba/opt_8h.html#ae00ba99de94a5bf84d832be8976df59b">NO_SYS</a>)</td></tr>
<tr class="separator:gaa28d13ddd5281b1912276991e7ea58c5"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<h2 class="groupheader">Macro Definition Documentation</h2>
<a id="gaa2b1f736373cd896e212644aa453fbaf"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gaa2b1f736373cd896e212644aa453fbaf">◆ </a></span>LWIP_HAVE_LOOPIF</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">#define LWIP_HAVE_LOOPIF   <a class="el" href="../../d2/da2/group__lwip__opts__loop.html#ga724a0ea765d5a47d026d529725f31c01">LWIP_NETIF_LOOPBACK</a></td>
</tr>
</table>
</div><div class="memdoc">
<p>LWIP_HAVE_LOOPIF==1: Support loop interface (127.0.0.1). This is only needed when no real netifs are available. If at least one other netif is available, loopback traffic uses this netif. </p>
<p class="definition">Definition at line <a class="el" href="../../dc/dba/opt_8h_source.html#l01438">1438</a> of file <a class="el" href="../../dc/dba/opt_8h_source.html">opt.h</a>.</p>
</div>
</div>
<a id="gaacc3ad5d0a771d45fb0a3e3a09b1dbea"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gaacc3ad5d0a771d45fb0a3e3a09b1dbea">◆ </a></span>LWIP_LOOPBACK_MAX_PBUFS</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">#define LWIP_LOOPBACK_MAX_PBUFS   0</td>
</tr>
</table>
</div><div class="memdoc">
<p>LWIP_LOOPBACK_MAX_PBUFS: Maximum number of pbufs on queue for loopback sending for each netif (0 = disabled) </p>
<p class="definition">Definition at line <a class="el" href="../../dc/dba/opt_8h_source.html#l01461">1461</a> of file <a class="el" href="../../dc/dba/opt_8h_source.html">opt.h</a>.</p>
</div>
</div>
<a id="ga10a878b390c2fbe421d82502001c7300"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga10a878b390c2fbe421d82502001c7300">◆ </a></span>LWIP_LOOPIF_MULTICAST</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">#define LWIP_LOOPIF_MULTICAST   0</td>
</tr>
</table>
</div><div class="memdoc">
<p>LWIP_LOOPIF_MULTICAST==1: Support multicast/IGMP on loop interface (127.0.0.1). </p>
<p class="definition">Definition at line <a class="el" href="../../dc/dba/opt_8h_source.html#l01445">1445</a> of file <a class="el" href="../../dc/dba/opt_8h_source.html">opt.h</a>.</p>
</div>
</div>
<a id="ga724a0ea765d5a47d026d529725f31c01"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga724a0ea765d5a47d026d529725f31c01">◆ </a></span>LWIP_NETIF_LOOPBACK</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">#define LWIP_NETIF_LOOPBACK   0</td>
</tr>
</table>
</div><div class="memdoc">
<p>LWIP_NETIF_LOOPBACK==1: Support sending packets with a destination IP address equal to the netif IP address, looping them back up the stack. </p>
<p class="definition">Definition at line <a class="el" href="../../dc/dba/opt_8h_source.html#l01453">1453</a> of file <a class="el" href="../../dc/dba/opt_8h_source.html">opt.h</a>.</p>
</div>
</div>
<a id="gaa28d13ddd5281b1912276991e7ea58c5"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gaa28d13ddd5281b1912276991e7ea58c5">◆ </a></span>LWIP_NETIF_LOOPBACK_MULTITHREADING</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">#define LWIP_NETIF_LOOPBACK_MULTITHREADING   (!<a class="el" href="../../dc/dba/opt_8h.html#ae00ba99de94a5bf84d832be8976df59b">NO_SYS</a>)</td>
</tr>
</table>
</div><div class="memdoc">
<p>LWIP_NETIF_LOOPBACK_MULTITHREADING: Indicates whether threading is enabled in the system, as netifs must change how they behave depending on this setting for the LWIP_NETIF_LOOPBACK option to work. Setting this is needed to avoid reentering non-reentrant functions like tcp_input(). LWIP_NETIF_LOOPBACK_MULTITHREADING==1: Indicates that the user is using a multithreaded environment like <a class="el" href="../../d2/d55/tcpip_8c.html">tcpip.c</a>. In this case, netif->input() is called directly. LWIP_NETIF_LOOPBACK_MULTITHREADING==0: Indicates a polling (or NO_SYS) setup. The packets are put on a list and netif_poll() must be called in the main application loop. </p>
<p class="definition">Definition at line <a class="el" href="../../dc/dba/opt_8h_source.html#l01478">1478</a> of file <a class="el" href="../../dc/dba/opt_8h_source.html">opt.h</a>.</p>
</div>
</div>
</div><!-- contents -->
</div><!-- doc-content -->
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
<ul>
<li class="footer">Generated by
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="../../doxygen.png" alt="doxygen"/></a> 1.8.16 </li>
</ul>
</div>
</body>
</html>
