<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://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"/>
<title>libnl: Routing Rules</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<!-- Generated by Doxygen 1.7.3 -->
<div id="top">
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td style="padding-left: 0.5em;">
<div id="projectname">libnl <span id="projectnumber">1.1</span></div>
</td>
</tr>
</tbody>
</table>
</div>
<div id="navrow1" class="tabs">
<ul class="tablist">
<li><a href="index.html"><span>Main Page</span></a></li>
<li><a href="modules.html"><span>Modules</span></a></li>
<li><a href="annotated.html"><span>Data Structures</span></a></li>
<li><a href="files.html"><span>Files</span></a></li>
</ul>
</div>
</div>
<div class="header">
<div class="headertitle">
<h1>Routing Rules</h1> </div>
<div class="ingroups"><a class="el" href="group__rtnl.html">Routing Netlink</a></div></div>
<div class="contents">
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="member-group"></a>
Allocation/Freeing</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gaa56841521717499404bdfc217cec62e0"></a><!-- doxytag: member="rule::rtnl_rule_alloc" ref="gaa56841521717499404bdfc217cec62e0" args="(void)" -->
struct rtnl_rule * </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_alloc</b> (void)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gac493abe8a33aa9d83110e2031e716a66"></a><!-- doxytag: member="rule::rtnl_rule_put" ref="gac493abe8a33aa9d83110e2031e716a66" args="(struct rtnl_rule *rule)" -->
void </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_put</b> (struct rtnl_rule *rule)</td></tr>
<tr><td colspan="2"><h2><a name="member-group"></a>
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__rule.html#gaf2e171bde0c400fcdb5ddb1460b15ba3">rtnl_rule_alloc_cache_by_family</a> (struct nl_handle *handle, int family)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Build a rule cache including all rules of the specified family currently configured in the kernel. <a href="#gaf2e171bde0c400fcdb5ddb1460b15ba3"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">struct nl_cache * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__rule.html#gad76997d7b10a2b8a9d55663484e0d8e2">rtnl_rule_alloc_cache</a> (struct nl_handle *handle)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Build a rule cache including all rules currently configured in the kernel. <a href="#gad76997d7b10a2b8a9d55663484e0d8e2"></a><br/></td></tr>
<tr><td colspan="2"><h2><a name="member-group"></a>
Rule Addition</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">struct nl_msg * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__rule.html#ga24b35124fa06cc0ac9f2fca375f8e509">rtnl_rule_build_add_request</a> (struct rtnl_rule *tmpl, int flags)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Build netlink request message to add a new rule. <a href="#ga24b35124fa06cc0ac9f2fca375f8e509"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__rule.html#ga8a9cbb02513beb0f5ba2b34d40a1fd2a">rtnl_rule_add</a> (struct nl_handle *handle, struct rtnl_rule *tmpl, int flags)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Add a new rule. <a href="#ga8a9cbb02513beb0f5ba2b34d40a1fd2a"></a><br/></td></tr>
<tr><td colspan="2"><h2><a name="member-group"></a>
Rule Deletion</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">struct nl_msg * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__rule.html#ga5a864351f543588ebaa242631d44d8c5">rtnl_rule_build_delete_request</a> (struct rtnl_rule *rule, int flags)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Build a netlink request message to delete a rule. <a href="#ga5a864351f543588ebaa242631d44d8c5"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__rule.html#ga0612d6316c026725baf828e5f78d94b1">rtnl_rule_delete</a> (struct nl_handle *handle, struct rtnl_rule *rule, int flags)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Delete a rule. <a href="#ga0612d6316c026725baf828e5f78d94b1"></a><br/></td></tr>
<tr><td colspan="2"><h2><a name="member-group"></a>
Attribute Modification</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gaf048214f898f5fee6f4aac6b94d0f534"></a><!-- doxytag: member="rule::rtnl_rule_set_family" ref="gaf048214f898f5fee6f4aac6b94d0f534" args="(struct rtnl_rule *rule, int family)" -->
void </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_set_family</b> (struct rtnl_rule *rule, int family)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gadfbf17f83d74a56365ef1c9f0c1275eb"></a><!-- doxytag: member="rule::rtnl_rule_get_family" ref="gadfbf17f83d74a56365ef1c9f0c1275eb" args="(struct rtnl_rule *rule)" -->
int </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_get_family</b> (struct rtnl_rule *rule)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga235360e499bfd966d0ae47ade93ecb3f"></a><!-- doxytag: member="rule::rtnl_rule_set_prio" ref="ga235360e499bfd966d0ae47ade93ecb3f" args="(struct rtnl_rule *rule, int prio)" -->
void </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_set_prio</b> (struct rtnl_rule *rule, int prio)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gad2a0660dea596f2527d4081b9b777642"></a><!-- doxytag: member="rule::rtnl_rule_get_prio" ref="gad2a0660dea596f2527d4081b9b777642" args="(struct rtnl_rule *rule)" -->
int </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_get_prio</b> (struct rtnl_rule *rule)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga4cd2cdbb0a5ca3ebae5248c9e1022c44"></a><!-- doxytag: member="rule::rtnl_rule_set_mark" ref="ga4cd2cdbb0a5ca3ebae5248c9e1022c44" args="(struct rtnl_rule *rule, uint64_t mark)" -->
void </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_set_mark</b> (struct rtnl_rule *rule, uint64_t mark)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga5452efd0a5f785dd5fc5f2dac82012e0"></a><!-- doxytag: member="rule::rtnl_rule_get_mark" ref="ga5452efd0a5f785dd5fc5f2dac82012e0" args="(struct rtnl_rule *rule)" -->
uint64_t </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_get_mark</b> (struct rtnl_rule *rule)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga56fcc3e0c20e4372ac307aadcc09740c"></a><!-- doxytag: member="rule::rtnl_rule_set_table" ref="ga56fcc3e0c20e4372ac307aadcc09740c" args="(struct rtnl_rule *rule, int table)" -->
void </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_set_table</b> (struct rtnl_rule *rule, int table)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga4e8d2fe91706ff0dd4ed9080ccb7a9e0"></a><!-- doxytag: member="rule::rtnl_rule_get_table" ref="ga4e8d2fe91706ff0dd4ed9080ccb7a9e0" args="(struct rtnl_rule *rule)" -->
int </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_get_table</b> (struct rtnl_rule *rule)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga891433d26f5dd9dbfb543072820db782"></a><!-- doxytag: member="rule::rtnl_rule_set_dsfield" ref="ga891433d26f5dd9dbfb543072820db782" args="(struct rtnl_rule *rule, int dsfield)" -->
void </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_set_dsfield</b> (struct rtnl_rule *rule, int dsfield)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga42bbf567d8a2161801c7f45a7bb13863"></a><!-- doxytag: member="rule::rtnl_rule_get_dsfield" ref="ga42bbf567d8a2161801c7f45a7bb13863" args="(struct rtnl_rule *rule)" -->
int </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_get_dsfield</b> (struct rtnl_rule *rule)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gad52268da2cb39f8ae7bc41b56eb86ee2"></a><!-- doxytag: member="rule::rtnl_rule_set_src_len" ref="gad52268da2cb39f8ae7bc41b56eb86ee2" args="(struct rtnl_rule *rule, int len)" -->
void </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_set_src_len</b> (struct rtnl_rule *rule, int len)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga33e90d849115eaee494c677acca4d968"></a><!-- doxytag: member="rule::rtnl_rule_get_src_len" ref="ga33e90d849115eaee494c677acca4d968" args="(struct rtnl_rule *rule)" -->
int </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_get_src_len</b> (struct rtnl_rule *rule)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga56ddfdcbeae61faef87b6a2d5504efa2"></a><!-- doxytag: member="rule::rtnl_rule_set_dst_len" ref="ga56ddfdcbeae61faef87b6a2d5504efa2" args="(struct rtnl_rule *rule, int len)" -->
void </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_set_dst_len</b> (struct rtnl_rule *rule, int len)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga285550864d0326237f54fb1645efc92b"></a><!-- doxytag: member="rule::rtnl_rule_get_dst_len" ref="ga285550864d0326237f54fb1645efc92b" args="(struct rtnl_rule *rule)" -->
int </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_get_dst_len</b> (struct rtnl_rule *rule)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga1b68d8b7af8eb9bff481a05896d3b212"></a><!-- doxytag: member="rule::rtnl_rule_set_src" ref="ga1b68d8b7af8eb9bff481a05896d3b212" args="(struct rtnl_rule *rule, struct nl_addr *src)" -->
int </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_set_src</b> (struct rtnl_rule *rule, struct nl_addr *src)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gaa460bfcfcbdd4f63e4f68111f1158ad0"></a><!-- doxytag: member="rule::rtnl_rule_get_src" ref="gaa460bfcfcbdd4f63e4f68111f1158ad0" args="(struct rtnl_rule *rule)" -->
struct nl_addr * </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_get_src</b> (struct rtnl_rule *rule)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga2f23139afcba91fb7659f30c2aea56ba"></a><!-- doxytag: member="rule::rtnl_rule_set_dst" ref="ga2f23139afcba91fb7659f30c2aea56ba" args="(struct rtnl_rule *rule, struct nl_addr *dst)" -->
int </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_set_dst</b> (struct rtnl_rule *rule, struct nl_addr *dst)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gacdf8d10e5f3fa522007dd03306e00863"></a><!-- doxytag: member="rule::rtnl_rule_get_dst" ref="gacdf8d10e5f3fa522007dd03306e00863" args="(struct rtnl_rule *rule)" -->
struct nl_addr * </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_get_dst</b> (struct rtnl_rule *rule)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga68953145a6dd66ec84bcdb69d050e521"></a><!-- doxytag: member="rule::rtnl_rule_set_iif" ref="ga68953145a6dd66ec84bcdb69d050e521" args="(struct rtnl_rule *rule, const char *dev)" -->
int </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_set_iif</b> (struct rtnl_rule *rule, const char *dev)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga7a0968ea839c3e6c5647880cffbac5ee"></a><!-- doxytag: member="rule::rtnl_rule_get_iif" ref="ga7a0968ea839c3e6c5647880cffbac5ee" args="(struct rtnl_rule *rule)" -->
char * </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_get_iif</b> (struct rtnl_rule *rule)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gafb75da03188ad0a3b0e037f575729aac"></a><!-- doxytag: member="rule::rtnl_rule_set_action" ref="gafb75da03188ad0a3b0e037f575729aac" args="(struct rtnl_rule *rule, int type)" -->
void </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_set_action</b> (struct rtnl_rule *rule, int type)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gaf4a402dd87656cda254143ca0785f167"></a><!-- doxytag: member="rule::rtnl_rule_get_action" ref="gaf4a402dd87656cda254143ca0785f167" args="(struct rtnl_rule *rule)" -->
int </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_get_action</b> (struct rtnl_rule *rule)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga311d24bdc3adaf826a976f06e58f62b7"></a><!-- doxytag: member="rule::rtnl_rule_set_realms" ref="ga311d24bdc3adaf826a976f06e58f62b7" args="(struct rtnl_rule *rule, realm_t realms)" -->
void </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_set_realms</b> (struct rtnl_rule *rule, realm_t realms)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga5a9ea991c9ae9bb30cd0fffecd1355ed"></a><!-- doxytag: member="rule::rtnl_rule_get_realms" ref="ga5a9ea991c9ae9bb30cd0fffecd1355ed" args="(struct rtnl_rule *rule)" -->
realm_t </td><td class="memItemRight" valign="bottom"><b>rtnl_rule_get_realms</b> (struct rtnl_rule *rule)</td></tr>
</table>
<hr/><h2>Function Documentation</h2>
<a class="anchor" id="gaf2e171bde0c400fcdb5ddb1460b15ba3"></a><!-- doxytag: member="rule.c::rtnl_rule_alloc_cache_by_family" ref="gaf2e171bde0c400fcdb5ddb1460b15ba3" args="(struct nl_handle *handle, int family)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">struct nl_cache* rtnl_rule_alloc_cache_by_family </td>
<td>(</td>
<td class="paramtype">struct nl_handle * </td>
<td class="paramname"><em>handle</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>family</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td><code> [read]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">handle</td><td>netlink handle </td></tr>
<tr><td class="paramname">family</td><td>address family</td></tr>
</table>
</dd>
</dl>
<p>Allocates a new rule cache, initializes it properly and updates it to include all rules of the specified address family 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. (nl_cache_destroy_and_free()) </dd></dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>The new cache or NULL if an error occured. </dd></dl>
<p>Definition at line <a class="el" href="rule_8c_source.html#l00449">449</a> of file <a class="el" href="rule_8c_source.html">rule.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>
<p>Referenced by <a class="el" href="rule_8c_source.html#l00479">rtnl_rule_alloc_cache()</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_rule_ops);
<span class="keywordflow">if</span> (cache == NULL)
<span class="keywordflow">return</span> NULL;
<span class="comment">/* XXX RULE_CACHE_FAMILY(cache) = family; */</span>
<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;
}
</pre></div>
</div>
</div>
<a class="anchor" id="gad76997d7b10a2b8a9d55663484e0d8e2"></a><!-- doxytag: member="rule.c::rtnl_rule_alloc_cache" ref="gad76997d7b10a2b8a9d55663484e0d8e2" args="(struct nl_handle *handle)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">struct nl_cache* rtnl_rule_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>
</table>
</div>
<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 rule cache, initializes it properly and updates it to include all rules 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. (nl_cache_destroy_and_free()) </dd></dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>The new cache or NULL if an error occured. </dd></dl>
<p>Definition at line <a class="el" href="rule_8c_source.html#l00479">479</a> of file <a class="el" href="rule_8c_source.html">rule.c</a>.</p>
<p>References <a class="el" href="rule_8c_source.html#l00449">rtnl_rule_alloc_cache_by_family()</a>.</p>
<div class="fragment"><pre class="fragment">{
<span class="keywordflow">return</span> <a class="code" href="group__rule.html#gaf2e171bde0c400fcdb5ddb1460b15ba3" title="Build a rule cache including all rules of the specified family currently configured in the kernel...">rtnl_rule_alloc_cache_by_family</a>(handle, AF_UNSPEC);
}
</pre></div>
</div>
</div>
<a class="anchor" id="ga24b35124fa06cc0ac9f2fca375f8e509"></a><!-- doxytag: member="rule.c::rtnl_rule_build_add_request" ref="ga24b35124fa06cc0ac9f2fca375f8e509" args="(struct rtnl_rule *tmpl, int flags)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">struct nl_msg* rtnl_rule_build_add_request </td>
<td>(</td>
<td class="paramtype">struct rtnl_rule * </td>
<td class="paramname"><em>tmpl</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>flags</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td><code> [read]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">tmpl</td><td>template with data of new rule </td></tr>
<tr><td class="paramname">flags</td><td>additional netlink message flags</td></tr>
</table>
</dd>
</dl>
<p>Builds a new netlink message requesting a addition of a new rule. The netlink message header isn't fully equipped with all relevant fields and must thus be sent out via <a class="el" href="group__nl.html#ga01a2aad82350f867e704d5c696438b60" title="Send netlink message and check & extend header values as needed.">nl_send_auto_complete()</a> or supplemented as needed. <em>tmpl</em> must contain the attributes of the new address set via <code>rtnl_rule_set_*</code> functions.</p>
<dl class="return"><dt><b>Returns:</b></dt><dd>The netlink message </dd></dl>
<p>Definition at line <a class="el" href="rule_8c_source.html#l00564">564</a> of file <a class="el" href="rule_8c_source.html">rule.c</a>.</p>
<p>References <a class="el" href="netlink-kernel_8h_source.html#l00134">NLM_F_CREATE</a>.</p>
<p>Referenced by <a class="el" href="rule_8c_source.html#l00581">rtnl_rule_add()</a>.</p>
<div class="fragment"><pre class="fragment">{
<span class="keywordflow">return</span> build_rule_msg(tmpl, RTM_NEWRULE, <a class="code" href="group__msg.html#ga20a00ae52e4c150f54649d7346d23a7a" title="Create config object if it doesn&#39;t already exist.">NLM_F_CREATE</a> | flags);
}
</pre></div>
</div>
</div>
<a class="anchor" id="ga8a9cbb02513beb0f5ba2b34d40a1fd2a"></a><!-- doxytag: member="rule.c::rtnl_rule_add" ref="ga8a9cbb02513beb0f5ba2b34d40a1fd2a" args="(struct nl_handle *handle, struct rtnl_rule *tmpl, int flags)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int rtnl_rule_add </td>
<td>(</td>
<td class="paramtype">struct nl_handle * </td>
<td class="paramname"><em>handle</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">struct rtnl_rule * </td>
<td class="paramname"><em>tmpl</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>flags</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">handle</td><td>netlink handle </td></tr>
<tr><td class="paramname">tmpl</td><td>template with requested changes </td></tr>
<tr><td class="paramname">flags</td><td>additional netlink message flags</td></tr>
</table>
</dd>
</dl>
<p>Builds a netlink message by calling <a class="el" href="group__rule.html#ga24b35124fa06cc0ac9f2fca375f8e509" title="Build netlink request message to add a new rule.">rtnl_rule_build_add_request()</a>, sends the request to the kernel and waits for the next ACK to be received and thus blocks until the request has been fullfilled.</p>
<dl class="return"><dt><b>Returns:</b></dt><dd>0 on sucess or a negative error if an error occured. </dd></dl>
<p>Definition at line <a class="el" href="rule_8c_source.html#l00581">581</a> of file <a class="el" href="rule_8c_source.html">rule.c</a>.</p>
<p>References <a class="el" href="nl_8c_source.html#l00373">nl_send_auto_complete()</a>, <a class="el" href="nl_8c_source.html#l00800">nl_wait_for_ack()</a>, <a class="el" href="msg_8c_source.html#l00656">nlmsg_free()</a>, and <a class="el" href="rule_8c_source.html#l00564">rtnl_rule_build_add_request()</a>.</p>
<div class="fragment"><pre class="fragment">{
<span class="keywordtype">int</span> err;
<span class="keyword">struct </span>nl_msg *msg;
msg = <a class="code" href="group__rule.html#ga24b35124fa06cc0ac9f2fca375f8e509" title="Build netlink request message to add a new rule.">rtnl_rule_build_add_request</a>(tmpl, flags);
<span class="keywordflow">if</span> (!msg)
<span class="keywordflow">return</span> nl_errno(ENOMEM);
err = <a class="code" href="group__nl.html#ga01a2aad82350f867e704d5c696438b60" title="Send netlink message and check &amp; extend header values as needed.">nl_send_auto_complete</a>(handle, msg);
<span class="keywordflow">if</span> (err < 0)
<span class="keywordflow">return</span> err;
<a class="code" href="group__msg.html#ga138ba9bee70553f9fbe7143deacad48c" title="Free a netlink message.">nlmsg_free</a>(msg);
<span class="keywordflow">return</span> <a class="code" href="group__nl.html#gaa65fec588e0a0a2de1881fb8366ccd79" title="Wait for ACK.">nl_wait_for_ack</a>(handle);
}
</pre></div>
</div>
</div>
<a class="anchor" id="ga5a864351f543588ebaa242631d44d8c5"></a><!-- doxytag: member="rule.c::rtnl_rule_build_delete_request" ref="ga5a864351f543588ebaa242631d44d8c5" args="(struct rtnl_rule *rule, int flags)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">struct nl_msg* rtnl_rule_build_delete_request </td>
<td>(</td>
<td class="paramtype">struct rtnl_rule * </td>
<td class="paramname"><em>rule</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>flags</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td><code> [read]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">rule</td><td>rule to delete </td></tr>
<tr><td class="paramname">flags</td><td>additional netlink message flags</td></tr>
</table>
</dd>
</dl>
<p>Builds a new netlink message requesting a deletion of a rule. The netlink message header isn't fully equipped with all relevant fields and must thus be sent out via <a class="el" href="group__nl.html#ga01a2aad82350f867e704d5c696438b60" title="Send netlink message and check & extend header values as needed.">nl_send_auto_complete()</a> or supplemented as needed. <em>rule</em> must point to an existing address.</p>
<dl class="return"><dt><b>Returns:</b></dt><dd>The netlink message </dd></dl>
<p>Definition at line <a class="el" href="rule_8c_source.html#l00618">618</a> of file <a class="el" href="rule_8c_source.html">rule.c</a>.</p>
<p>Referenced by <a class="el" href="rule_8c_source.html#l00635">rtnl_rule_delete()</a>.</p>
<div class="fragment"><pre class="fragment">{
<span class="keywordflow">return</span> build_rule_msg(rule, RTM_DELRULE, flags);
}
</pre></div>
</div>
</div>
<a class="anchor" id="ga0612d6316c026725baf828e5f78d94b1"></a><!-- doxytag: member="rule.c::rtnl_rule_delete" ref="ga0612d6316c026725baf828e5f78d94b1" args="(struct nl_handle *handle, struct rtnl_rule *rule, int flags)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int rtnl_rule_delete </td>
<td>(</td>
<td class="paramtype">struct nl_handle * </td>
<td class="paramname"><em>handle</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">struct rtnl_rule * </td>
<td class="paramname"><em>rule</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>flags</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">handle</td><td>netlink handle </td></tr>
<tr><td class="paramname">rule</td><td>rule to delete </td></tr>
<tr><td class="paramname">flags</td><td>additional netlink message flags</td></tr>
</table>
</dd>
</dl>
<p>Builds a netlink message by calling <a class="el" href="group__rule.html#ga5a864351f543588ebaa242631d44d8c5" title="Build a netlink request message to delete a rule.">rtnl_rule_build_delete_request()</a>, sends the request to the kernel and waits for the next ACK to be received and thus blocks until the request has been fullfilled.</p>
<dl class="return"><dt><b>Returns:</b></dt><dd>0 on sucess or a negative error if an error occured. </dd></dl>
<p>Definition at line <a class="el" href="rule_8c_source.html#l00635">635</a> of file <a class="el" href="rule_8c_source.html">rule.c</a>.</p>
<p>References <a class="el" href="nl_8c_source.html#l00373">nl_send_auto_complete()</a>, <a class="el" href="nl_8c_source.html#l00800">nl_wait_for_ack()</a>, <a class="el" href="msg_8c_source.html#l00656">nlmsg_free()</a>, and <a class="el" href="rule_8c_source.html#l00618">rtnl_rule_build_delete_request()</a>.</p>
<div class="fragment"><pre class="fragment">{
<span class="keywordtype">int</span> err;
<span class="keyword">struct </span>nl_msg *msg;
msg = <a class="code" href="group__rule.html#ga5a864351f543588ebaa242631d44d8c5" title="Build a netlink request message to delete a rule.">rtnl_rule_build_delete_request</a>(rule, flags);
<span class="keywordflow">if</span> (!msg)
<span class="keywordflow">return</span> nl_errno(ENOMEM);
err = <a class="code" href="group__nl.html#ga01a2aad82350f867e704d5c696438b60" title="Send netlink message and check &amp; extend header values as needed.">nl_send_auto_complete</a>(handle, msg);
<span class="keywordflow">if</span> (err < 0)
<span class="keywordflow">return</span> err;
<a class="code" href="group__msg.html#ga138ba9bee70553f9fbe7143deacad48c" title="Free a netlink message.">nlmsg_free</a>(msg);
<span class="keywordflow">return</span> <a class="code" href="group__nl.html#gaa65fec588e0a0a2de1881fb8366ccd79" title="Wait for ACK.">nl_wait_for_ack</a>(handle);
}
</pre></div>
</div>
</div>
</div>
<hr class="footer"/><address class="footer"><small>Generated on Mon Mar 21 2011 for libnl by 
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.7.3 </small></address>
</body>
</html>
distrib
>
Fedora
>
14
>
x86_64
>
media
>
updates
>
by-pkgid
>
87b89b73c41f4440bb86afd421c7548f
>
files
>
166
