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libnl-devel-1.1-14.fc14.x86_64.rpm

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<h1>lib/route/link/api.c</h1>  </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * lib/route/link/api.c         Link Info API</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> *      This library is free software; you can redistribute it and/or</span>
<a name="l00005"></a>00005 <span class="comment"> *      modify it under the terms of the GNU Lesser General Public</span>
<a name="l00006"></a>00006 <span class="comment"> *      License as published by the Free Software Foundation version 2.1</span>
<a name="l00007"></a>00007 <span class="comment"> *      of the License.</span>
<a name="l00008"></a>00008 <span class="comment"> *</span>
<a name="l00009"></a>00009 <span class="comment"> * Copyright (c) 2003-2008 Thomas Graf &lt;tgraf@suug.ch&gt;</span>
<a name="l00010"></a>00010 <span class="comment"> */</span>
<a name="l00011"></a>00011 <span class="comment"></span>
<a name="l00012"></a>00012 <span class="comment">/**</span>
<a name="l00013"></a>00013 <span class="comment"> * @ingroup link</span>
<a name="l00014"></a>00014 <span class="comment"> * @defgroup link_info Link Info API</span>
<a name="l00015"></a>00015 <span class="comment"> * @brief</span>
<a name="l00016"></a>00016 <span class="comment"> *</span>
<a name="l00017"></a>00017 <span class="comment"> * @par 1) Registering/Unregistering a new link info type</span>
<a name="l00018"></a>00018 <span class="comment"> * @code</span>
<a name="l00019"></a>00019 <span class="comment"> * static struct rtnl_link_info_ops vlan_info_ops = {</span>
<a name="l00020"></a>00020 <span class="comment"> *      .io_name                = &quot;vlan&quot;,</span>
<a name="l00021"></a>00021 <span class="comment"> *      .io_alloc               = vlan_alloc,</span>
<a name="l00022"></a>00022 <span class="comment"> *      .io_parse               = vlan_parse,</span>
<a name="l00023"></a>00023 <span class="comment"> *      .io_dump[NL_DUMP_BRIEF] = vlan_dump_brief,</span>
<a name="l00024"></a>00024 <span class="comment"> *      .io_dump[NL_DUMP_FULL]  = vlan_dump_full,</span>
<a name="l00025"></a>00025 <span class="comment"> *      .io_free                = vlan_free,</span>
<a name="l00026"></a>00026 <span class="comment"> * };</span>
<a name="l00027"></a>00027 <span class="comment"> *</span>
<a name="l00028"></a>00028 <span class="comment"> * static void __init vlan_init(void)</span>
<a name="l00029"></a>00029 <span class="comment"> * {</span>
<a name="l00030"></a>00030 <span class="comment"> *      rtnl_link_register_info(&amp;vlan_info_ops);</span>
<a name="l00031"></a>00031 <span class="comment"> * }</span>
<a name="l00032"></a>00032 <span class="comment"> *</span>
<a name="l00033"></a>00033 <span class="comment"> * static void __exit vlan_exit(void)</span>
<a name="l00034"></a>00034 <span class="comment"> * {</span>
<a name="l00035"></a>00035 <span class="comment"> *      rtnl_link_unregister_info(&amp;vlan_info_ops);</span>
<a name="l00036"></a>00036 <span class="comment"> * }</span>
<a name="l00037"></a>00037 <span class="comment"> * @endcode</span>
<a name="l00038"></a>00038 <span class="comment"> *</span>
<a name="l00039"></a>00039 <span class="comment"> * @{</span>
<a name="l00040"></a>00040 <span class="comment"> */</span>
<a name="l00041"></a>00041 
<a name="l00042"></a>00042 <span class="preprocessor">#include &lt;netlink-local.h&gt;</span>
<a name="l00043"></a>00043 <span class="preprocessor">#include &lt;netlink/netlink.h&gt;</span>
<a name="l00044"></a>00044 <span class="preprocessor">#include &lt;netlink/utils.h&gt;</span>
<a name="l00045"></a>00045 <span class="preprocessor">#include &lt;netlink/route/link.h&gt;</span>
<a name="l00046"></a>00046 <span class="preprocessor">#include &lt;netlink/route/link/info-api.h&gt;</span>
<a name="l00047"></a>00047 
<a name="l00048"></a>00048 <span class="keyword">static</span> <span class="keyword">struct </span><a class="code" href="structrtnl__link__info__ops.html" title="Link info operations.">rtnl_link_info_ops</a> *info_ops;
<a name="l00049"></a>00049 
<a name="l00050"></a>00050 <span class="keyword">struct </span><a class="code" href="structrtnl__link__info__ops.html" title="Link info operations.">rtnl_link_info_ops</a> *rtnl_link_info_ops_lookup(<span class="keyword">const</span> <span class="keywordtype">char</span> *name)
<a name="l00051"></a>00051 {
<a name="l00052"></a>00052         <span class="keyword">struct </span><a class="code" href="structrtnl__link__info__ops.html" title="Link info operations.">rtnl_link_info_ops</a> *ops;
<a name="l00053"></a>00053 
<a name="l00054"></a>00054         <span class="keywordflow">for</span> (ops = info_ops; ops; ops = ops-&gt;io_next)
<a name="l00055"></a>00055                 <span class="keywordflow">if</span> (!strcmp(ops-&gt;<a class="code" href="structrtnl__link__info__ops.html#a03227fa6a14606be5523b9b92a2e2803" title="Name of operations, must match name on kernel side.">io_name</a>, name))
<a name="l00056"></a>00056                         <span class="keywordflow">return</span> ops;
<a name="l00057"></a>00057 
<a name="l00058"></a>00058         <span class="keywordflow">return</span> NULL;
<a name="l00059"></a>00059 }
<a name="l00060"></a>00060 
<a name="l00061"></a>00061 <span class="keywordtype">int</span> rtnl_link_register_info(<span class="keyword">struct</span> <a class="code" href="structrtnl__link__info__ops.html" title="Link info operations.">rtnl_link_info_ops</a> *ops)
<a name="l00062"></a>00062 {
<a name="l00063"></a>00063         <span class="keywordflow">if</span> (ops-&gt;<a class="code" href="structrtnl__link__info__ops.html#a03227fa6a14606be5523b9b92a2e2803" title="Name of operations, must match name on kernel side.">io_name</a> == NULL)
<a name="l00064"></a>00064                 <span class="keywordflow">return</span> nl_error(EINVAL, <span class="stringliteral">&quot;No name specified&quot;</span>);
<a name="l00065"></a>00065 
<a name="l00066"></a>00066         <span class="keywordflow">if</span> (rtnl_link_info_ops_lookup(ops-&gt;<a class="code" href="structrtnl__link__info__ops.html#a03227fa6a14606be5523b9b92a2e2803" title="Name of operations, must match name on kernel side.">io_name</a>))
<a name="l00067"></a>00067                 <span class="keywordflow">return</span> nl_error(EEXIST, <span class="stringliteral">&quot;Link info operations already exist&quot;</span>);
<a name="l00068"></a>00068 
<a name="l00069"></a>00069         NL_DBG(1, <span class="stringliteral">&quot;Registered link info operations %s\n&quot;</span>, ops-&gt;<a class="code" href="structrtnl__link__info__ops.html#a03227fa6a14606be5523b9b92a2e2803" title="Name of operations, must match name on kernel side.">io_name</a>);
<a name="l00070"></a>00070 
<a name="l00071"></a>00071         ops-&gt;io_next = info_ops;
<a name="l00072"></a>00072         info_ops = ops;
<a name="l00073"></a>00073 
<a name="l00074"></a>00074         <span class="keywordflow">return</span> 0;
<a name="l00075"></a>00075 }
<a name="l00076"></a>00076 
<a name="l00077"></a>00077 <span class="keywordtype">int</span> rtnl_link_unregister_info(<span class="keyword">struct</span> <a class="code" href="structrtnl__link__info__ops.html" title="Link info operations.">rtnl_link_info_ops</a> *ops)
<a name="l00078"></a>00078 {
<a name="l00079"></a>00079         <span class="keyword">struct </span><a class="code" href="structrtnl__link__info__ops.html" title="Link info operations.">rtnl_link_info_ops</a> *t, **tp;
<a name="l00080"></a>00080 
<a name="l00081"></a>00081         <span class="keywordflow">for</span> (tp = &amp;info_ops; (t=*tp) != NULL; tp = &amp;t-&gt;io_next)
<a name="l00082"></a>00082                 <span class="keywordflow">if</span> (t == ops)
<a name="l00083"></a>00083                         <span class="keywordflow">break</span>;
<a name="l00084"></a>00084 
<a name="l00085"></a>00085         <span class="keywordflow">if</span> (!t)
<a name="l00086"></a>00086                 <span class="keywordflow">return</span> nl_error(ENOENT, <span class="stringliteral">&quot;No such link info operations&quot;</span>);
<a name="l00087"></a>00087 
<a name="l00088"></a>00088         <span class="keywordflow">if</span> (t-&gt;<a class="code" href="structrtnl__link__info__ops.html#a6c5d7e6ae5b7e0f0d632ef82aa1ea38b" title="Reference count (internal, do not use)">io_refcnt</a> &gt; 0)
<a name="l00089"></a>00089                 <span class="keywordflow">return</span> nl_error(EBUSY, <span class="stringliteral">&quot;Info operations in use&quot;</span>);
<a name="l00090"></a>00090 
<a name="l00091"></a>00091         NL_DBG(1, <span class="stringliteral">&quot;Unregistered link info perations %s\n&quot;</span>, ops-&gt;<a class="code" href="structrtnl__link__info__ops.html#a03227fa6a14606be5523b9b92a2e2803" title="Name of operations, must match name on kernel side.">io_name</a>);
<a name="l00092"></a>00092 
<a name="l00093"></a>00093         *tp = t-&gt;io_next;
<a name="l00094"></a>00094         <span class="keywordflow">return</span> 0;
<a name="l00095"></a>00095 }
<a name="l00096"></a>00096 <span class="comment"></span>
<a name="l00097"></a>00097 <span class="comment">/** @} */</span>
<a name="l00098"></a>00098 
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