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<div id="projectname">libnl <span id="projectnumber">1.1</span></div>
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<a href="#groups">Modules</a> </div>
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<h1>Routing</h1> </div>
<div class="ingroups"><a class="el" href="group__rtnl.html">Routing Netlink</a></div></div>
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<tr><td colspan="2"><h2><a name="groups"></a>
Modules</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__route__obj.html">Route Object</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__route__utils.html">Utilities</a></td></tr>
<p><tr><td class="mdescLeft"> </td><td class="mdescRight"><p>Routing Utility Functions. </p>
<br/></td></tr>
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Cache Management</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">struct nl_cache * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__route.html#ga3c018360c6ac0ba9c63b6165abee3f16">rtnl_route_alloc_cache</a> (struct nl_handle *handle)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Build a route cache holding all routes currently configured in the kernel. <a href="#ga3c018360c6ac0ba9c63b6165abee3f16"></a><br/></td></tr>
<tr><td colspan="2"><h2><a name="member-group"></a>
Route Addition</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gad992e4d6e57ca13d676a2006ba01450b"></a><!-- doxytag: member="route::rtnl_route_build_add_request" ref="gad992e4d6e57ca13d676a2006ba01450b" args="(struct rtnl_route *tmpl, int flags)" -->
struct nl_msg * </td><td class="memItemRight" valign="bottom"><b>rtnl_route_build_add_request</b> (struct rtnl_route *tmpl, int flags)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga4464787044817804fab64e3acf57d17a"></a><!-- doxytag: member="route::rtnl_route_add" ref="ga4464787044817804fab64e3acf57d17a" args="(struct nl_handle *handle, struct rtnl_route *route, int flags)" -->
int </td><td class="memItemRight" valign="bottom"><b>rtnl_route_add</b> (struct nl_handle *handle, struct rtnl_route *route, int flags)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga14c87693a9535138085533b38e870327"></a><!-- doxytag: member="route::rtnl_route_build_del_request" ref="ga14c87693a9535138085533b38e870327" args="(struct rtnl_route *tmpl, int flags)" -->
struct nl_msg * </td><td class="memItemRight" valign="bottom"><b>rtnl_route_build_del_request</b> (struct rtnl_route *tmpl, int flags)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gafa126055de809a1fb36bebdee4173198"></a><!-- doxytag: member="route::rtnl_route_del" ref="gafa126055de809a1fb36bebdee4173198" args="(struct nl_handle *handle, struct rtnl_route *route, int flags)" -->
int </td><td class="memItemRight" valign="bottom"><b>rtnl_route_del</b> (struct nl_handle *handle, struct rtnl_route *route, int flags)</td></tr>
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<hr/><h2>Function Documentation</h2>
<a class="anchor" id="ga3c018360c6ac0ba9c63b6165abee3f16"></a><!-- doxytag: member="route.c::rtnl_route_alloc_cache" ref="ga3c018360c6ac0ba9c63b6165abee3f16" args="(struct nl_handle *handle)" -->
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<td class="memname">struct nl_cache* rtnl_route_alloc_cache </td>
<td>(</td>
<td class="paramtype">struct nl_handle * </td>
<td class="paramname"><em>handle</em></td><td>)</td>
<td><code> [read]</code></td>
</tr>
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<div class="memdoc">
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">handle</td><td>netlink handle</td></tr>
</table>
</dd>
</dl>
<p>Allocates a new cache, initializes it properly and updates it to contain all routes currently configured in the kernel.</p>
<dl class="note"><dt><b>Note:</b></dt><dd>The caller is responsible for destroying and freeing the cache after using it. </dd></dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>The cache or NULL if an error has occured. </dd></dl>
<p>Definition at line <a class="el" href="route_8c_source.html#l00241">241</a> of file <a class="el" href="route_8c_source.html">route.c</a>.</p>
<p>References <a class="el" href="cache_8c_source.html#l00173">nl_cache_alloc()</a>, and <a class="el" href="cache_8c_source.html#l00662">nl_cache_refill()</a>.</p>
<div class="fragment"><pre class="fragment">{
<span class="keyword">struct </span>nl_cache *cache;
cache = <a class="code" href="group__cache.html#ga9520ae0f2158db3c081f34c851d92252" title="Allocate an empty cache.">nl_cache_alloc</a>(&rtnl_route_ops);
<span class="keywordflow">if</span> (!cache)
<span class="keywordflow">return</span> NULL;
<span class="keywordflow">if</span> (handle && <a class="code" href="group__cache.html#gaf5bd584017847e6ef69ec36739a6aaf0" title="(Re)fill a cache with the contents in the kernel.">nl_cache_refill</a>(handle, cache) < 0) {
free(cache);
<span class="keywordflow">return</span> NULL;
}
<span class="keywordflow">return</span> cache;
}
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