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<h1>lib/route/cls/u32.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/cls/u32.c u32 classifier</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) 2003-2006 Thomas Graf <tgraf@suug.ch></span>
<a name="l00010"></a>00010 <span class="comment"> * Copyright (c) 2005-2006 Petr Gotthard <petr.gotthard@siemens.com></span>
<a name="l00011"></a>00011 <span class="comment"> * Copyright (c) 2005-2006 Siemens AG Oesterreich</span>
<a name="l00012"></a>00012 <span class="comment"> */</span>
<a name="l00013"></a>00013 <span class="comment"></span>
<a name="l00014"></a>00014 <span class="comment">/**</span>
<a name="l00015"></a>00015 <span class="comment"> * @ingroup cls_api</span>
<a name="l00016"></a>00016 <span class="comment"> * @defgroup u32 Universal 32-bit Classifier</span>
<a name="l00017"></a>00017 <span class="comment"> *</span>
<a name="l00018"></a>00018 <span class="comment"> * @{</span>
<a name="l00019"></a>00019 <span class="comment"> */</span>
<a name="l00020"></a>00020
<a name="l00021"></a>00021 <span class="preprocessor">#include <netlink-local.h></span>
<a name="l00022"></a>00022 <span class="preprocessor">#include <netlink-tc.h></span>
<a name="l00023"></a>00023 <span class="preprocessor">#include <netlink/netlink.h></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <netlink/attr.h></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <netlink/utils.h></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <netlink/route/tc.h></span>
<a name="l00027"></a>00027 <span class="preprocessor">#include <netlink/route/classifier.h></span>
<a name="l00028"></a>00028 <span class="preprocessor">#include <netlink/route/classifier-modules.h></span>
<a name="l00029"></a>00029 <span class="preprocessor">#include <netlink/route/cls/u32.h></span>
<a name="l00030"></a>00030 <span class="comment"></span>
<a name="l00031"></a>00031 <span class="comment">/** @cond SKIP */</span>
<a name="l00032"></a>00032 <span class="preprocessor">#define U32_ATTR_DIVISOR 0x001</span>
<a name="l00033"></a>00033 <span class="preprocessor"></span><span class="preprocessor">#define U32_ATTR_HASH 0x002</span>
<a name="l00034"></a>00034 <span class="preprocessor"></span><span class="preprocessor">#define U32_ATTR_CLASSID 0x004</span>
<a name="l00035"></a>00035 <span class="preprocessor"></span><span class="preprocessor">#define U32_ATTR_LINK 0x008</span>
<a name="l00036"></a>00036 <span class="preprocessor"></span><span class="preprocessor">#define U32_ATTR_PCNT 0x010</span>
<a name="l00037"></a>00037 <span class="preprocessor"></span><span class="preprocessor">#define U32_ATTR_SELECTOR 0x020</span>
<a name="l00038"></a>00038 <span class="preprocessor"></span><span class="preprocessor">#define U32_ATTR_ACTION 0x040</span>
<a name="l00039"></a>00039 <span class="preprocessor"></span><span class="preprocessor">#define U32_ATTR_POLICE 0x080</span>
<a name="l00040"></a>00040 <span class="preprocessor"></span><span class="preprocessor">#define U32_ATTR_INDEV 0x100</span>
<a name="l00041"></a>00041 <span class="preprocessor"></span><span class="comment">/** @endcond */</span>
<a name="l00042"></a>00042
<a name="l00043"></a>00043 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keyword">struct </span>rtnl_u32 *u32_cls(<span class="keyword">struct</span> rtnl_cls *cls)
<a name="l00044"></a>00044 {
<a name="l00045"></a>00045 <span class="keywordflow">return</span> (<span class="keyword">struct</span> rtnl_u32 *) cls->c_subdata;
<a name="l00046"></a>00046 }
<a name="l00047"></a>00047
<a name="l00048"></a>00048 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keyword">struct </span>rtnl_u32 *u32_alloc(<span class="keyword">struct</span> rtnl_cls *cls)
<a name="l00049"></a>00049 {
<a name="l00050"></a>00050 <span class="keywordflow">if</span> (!cls->c_subdata)
<a name="l00051"></a>00051 cls->c_subdata = calloc(1, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> rtnl_u32));
<a name="l00052"></a>00052
<a name="l00053"></a>00053 <span class="keywordflow">return</span> u32_cls(cls);
<a name="l00054"></a>00054 }
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keyword">struct </span>tc_u32_sel *u32_selector(<span class="keyword">struct</span> rtnl_u32 *u)
<a name="l00057"></a>00057 {
<a name="l00058"></a>00058 <span class="keywordflow">return</span> (<span class="keyword">struct</span> tc_u32_sel *) u->cu_selector->d_data;
<a name="l00059"></a>00059 }
<a name="l00060"></a>00060
<a name="l00061"></a>00061 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keyword">struct </span>tc_u32_sel *u32_selector_alloc(<span class="keyword">struct</span> rtnl_u32 *u)
<a name="l00062"></a>00062 {
<a name="l00063"></a>00063 <span class="keywordflow">if</span> (!u->cu_selector)
<a name="l00064"></a>00064 u->cu_selector = <a class="code" href="group__data.html#gafd58c229c0e4dd4dcea07c8d8493c144" title="Allocate a new abstract data object.">nl_data_alloc</a>(NULL, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> tc_u32_sel));
<a name="l00065"></a>00065
<a name="l00066"></a>00066 <span class="keywordflow">return</span> u32_selector(u);
<a name="l00067"></a>00067 }
<a name="l00068"></a>00068
<a name="l00069"></a>00069 <span class="keyword">static</span> <span class="keyword">struct </span><a class="code" href="structnla__policy.html" title="attribute validation policy">nla_policy</a> u32_policy[TCA_U32_MAX+1] = {
<a name="l00070"></a>00070 [TCA_U32_DIVISOR] = { .<a class="code" href="structnla__policy.html#aaa36c9d1e298fc9e4ee16a8fb553b32a" title="Type of attribute or NLA_UNSPEC.">type</a> = <a class="code" href="group__attr.html#gga06fc87d81c62e9abb8790b6e5713c55babddb836025b456b06b025c293bff6dc8" title="32bit integer">NLA_U32</a> },
<a name="l00071"></a>00071 [TCA_U32_HASH] = { .type = <a class="code" href="group__attr.html#gga06fc87d81c62e9abb8790b6e5713c55babddb836025b456b06b025c293bff6dc8" title="32bit integer">NLA_U32</a> },
<a name="l00072"></a>00072 [TCA_U32_CLASSID] = { .type = <a class="code" href="group__attr.html#gga06fc87d81c62e9abb8790b6e5713c55babddb836025b456b06b025c293bff6dc8" title="32bit integer">NLA_U32</a> },
<a name="l00073"></a>00073 [TCA_U32_LINK] = { .type = <a class="code" href="group__attr.html#gga06fc87d81c62e9abb8790b6e5713c55babddb836025b456b06b025c293bff6dc8" title="32bit integer">NLA_U32</a> },
<a name="l00074"></a>00074 [TCA_U32_INDEV] = { .type = <a class="code" href="group__attr.html#gga06fc87d81c62e9abb8790b6e5713c55ba284d1eafd6d5d99cedaff3cd5f5a8378" title="character string">NLA_STRING</a>,
<a name="l00075"></a>00075 .maxlen = IFNAMSIZ },
<a name="l00076"></a>00076 [TCA_U32_SEL] = { .minlen = <span class="keyword">sizeof</span>(<span class="keyword">struct </span>tc_u32_sel) },
<a name="l00077"></a>00077 [TCA_U32_PCNT] = { .minlen = <span class="keyword">sizeof</span>(<span class="keyword">struct </span>tc_u32_pcnt) },
<a name="l00078"></a>00078 };
<a name="l00079"></a>00079
<a name="l00080"></a>00080 <span class="keyword">static</span> <span class="keywordtype">int</span> u32_msg_parser(<span class="keyword">struct</span> rtnl_cls *cls)
<a name="l00081"></a>00081 {
<a name="l00082"></a>00082 <span class="keywordtype">int</span> err;
<a name="l00083"></a>00083 <span class="keyword">struct </span>nlattr *tb[TCA_U32_MAX + 1];
<a name="l00084"></a>00084 <span class="keyword">struct </span>rtnl_u32 *u;
<a name="l00085"></a>00085
<a name="l00086"></a>00086 err = tca_parse(tb, TCA_U32_MAX, (<span class="keyword">struct</span> rtnl_tca *) cls, u32_policy);
<a name="l00087"></a>00087 <span class="keywordflow">if</span> (err < 0)
<a name="l00088"></a>00088 <span class="keywordflow">return</span> err;
<a name="l00089"></a>00089
<a name="l00090"></a>00090 u = u32_alloc(cls);
<a name="l00091"></a>00091 <span class="keywordflow">if</span> (!u)
<a name="l00092"></a>00092 <span class="keywordflow">goto</span> errout_nomem;
<a name="l00093"></a>00093
<a name="l00094"></a>00094 <span class="keywordflow">if</span> (tb[TCA_U32_DIVISOR]) {
<a name="l00095"></a>00095 u->cu_divisor = <a class="code" href="group__attr.html#gabda0290a8b26cc577c2c5cefa814aeac" title="Return payload of u32 attribute.">nla_get_u32</a>(tb[TCA_U32_DIVISOR]);
<a name="l00096"></a>00096 u->cu_mask |= U32_ATTR_DIVISOR;
<a name="l00097"></a>00097 }
<a name="l00098"></a>00098
<a name="l00099"></a>00099 <span class="keywordflow">if</span> (tb[TCA_U32_SEL]) {
<a name="l00100"></a>00100 u->cu_selector = <a class="code" href="group__attr.html#ga33a5aef23c5d26c8247632ed1f167068" title="Return payload of abstract data attribute.">nla_get_data</a>(tb[TCA_U32_SEL]);
<a name="l00101"></a>00101 <span class="keywordflow">if</span> (!u->cu_selector)
<a name="l00102"></a>00102 <span class="keywordflow">goto</span> errout_nomem;
<a name="l00103"></a>00103 u->cu_mask |= U32_ATTR_SELECTOR;
<a name="l00104"></a>00104 }
<a name="l00105"></a>00105
<a name="l00106"></a>00106 <span class="keywordflow">if</span> (tb[TCA_U32_HASH]) {
<a name="l00107"></a>00107 u->cu_hash = <a class="code" href="group__attr.html#gabda0290a8b26cc577c2c5cefa814aeac" title="Return payload of u32 attribute.">nla_get_u32</a>(tb[TCA_U32_HASH]);
<a name="l00108"></a>00108 u->cu_mask |= U32_ATTR_HASH;
<a name="l00109"></a>00109 }
<a name="l00110"></a>00110
<a name="l00111"></a>00111 <span class="keywordflow">if</span> (tb[TCA_U32_CLASSID]) {
<a name="l00112"></a>00112 u->cu_classid = <a class="code" href="group__attr.html#gabda0290a8b26cc577c2c5cefa814aeac" title="Return payload of u32 attribute.">nla_get_u32</a>(tb[TCA_U32_CLASSID]);
<a name="l00113"></a>00113 u->cu_mask |= U32_ATTR_CLASSID;
<a name="l00114"></a>00114 }
<a name="l00115"></a>00115
<a name="l00116"></a>00116 <span class="keywordflow">if</span> (tb[TCA_U32_LINK]) {
<a name="l00117"></a>00117 u->cu_link = <a class="code" href="group__attr.html#gabda0290a8b26cc577c2c5cefa814aeac" title="Return payload of u32 attribute.">nla_get_u32</a>(tb[TCA_U32_LINK]);
<a name="l00118"></a>00118 u->cu_mask |= U32_ATTR_LINK;
<a name="l00119"></a>00119 }
<a name="l00120"></a>00120
<a name="l00121"></a>00121 <span class="keywordflow">if</span> (tb[TCA_U32_ACT]) {
<a name="l00122"></a>00122 u->cu_act = <a class="code" href="group__attr.html#ga33a5aef23c5d26c8247632ed1f167068" title="Return payload of abstract data attribute.">nla_get_data</a>(tb[TCA_U32_ACT]);
<a name="l00123"></a>00123 <span class="keywordflow">if</span> (!u->cu_act)
<a name="l00124"></a>00124 <span class="keywordflow">goto</span> errout_nomem;
<a name="l00125"></a>00125 u->cu_mask |= U32_ATTR_ACTION;
<a name="l00126"></a>00126 }
<a name="l00127"></a>00127
<a name="l00128"></a>00128 <span class="keywordflow">if</span> (tb[TCA_U32_POLICE]) {
<a name="l00129"></a>00129 u->cu_police = <a class="code" href="group__attr.html#ga33a5aef23c5d26c8247632ed1f167068" title="Return payload of abstract data attribute.">nla_get_data</a>(tb[TCA_U32_POLICE]);
<a name="l00130"></a>00130 <span class="keywordflow">if</span> (!u->cu_police)
<a name="l00131"></a>00131 <span class="keywordflow">goto</span> errout_nomem;
<a name="l00132"></a>00132 u->cu_mask |= U32_ATTR_POLICE;
<a name="l00133"></a>00133 }
<a name="l00134"></a>00134
<a name="l00135"></a>00135 <span class="keywordflow">if</span> (tb[TCA_U32_PCNT]) {
<a name="l00136"></a>00136 <span class="keyword">struct </span>tc_u32_sel *sel;
<a name="l00137"></a>00137 <span class="keywordtype">int</span> pcnt_size;
<a name="l00138"></a>00138
<a name="l00139"></a>00139 <span class="keywordflow">if</span> (!tb[TCA_U32_SEL]) {
<a name="l00140"></a>00140 err = nl_error(EINVAL, <span class="stringliteral">"Missing TCA_U32_SEL required "</span>
<a name="l00141"></a>00141 <span class="stringliteral">"for TCA_U32_PCNT"</span>);
<a name="l00142"></a>00142 <span class="keywordflow">goto</span> errout;
<a name="l00143"></a>00143 }
<a name="l00144"></a>00144
<a name="l00145"></a>00145 sel = u->cu_selector->d_data;
<a name="l00146"></a>00146 pcnt_size = <span class="keyword">sizeof</span>(<span class="keyword">struct </span>tc_u32_pcnt) +
<a name="l00147"></a>00147 (sel->nkeys * <span class="keyword">sizeof</span>(uint64_t));
<a name="l00148"></a>00148 <span class="keywordflow">if</span> (<a class="code" href="group__attr.html#gac5a7705797946fa9c0775997bb8d130b" title="length of payload">nla_len</a>(tb[TCA_U32_PCNT]) < pcnt_size) {
<a name="l00149"></a>00149 err = nl_error(EINVAL, <span class="stringliteral">"Invalid size for TCA_U32_PCNT"</span>);
<a name="l00150"></a>00150 <span class="keywordflow">goto</span> errout;
<a name="l00151"></a>00151 }
<a name="l00152"></a>00152
<a name="l00153"></a>00153 u->cu_pcnt = <a class="code" href="group__attr.html#ga33a5aef23c5d26c8247632ed1f167068" title="Return payload of abstract data attribute.">nla_get_data</a>(tb[TCA_U32_PCNT]);
<a name="l00154"></a>00154 <span class="keywordflow">if</span> (!u->cu_pcnt)
<a name="l00155"></a>00155 <span class="keywordflow">goto</span> errout_nomem;
<a name="l00156"></a>00156 u->cu_mask |= U32_ATTR_PCNT;
<a name="l00157"></a>00157 }
<a name="l00158"></a>00158
<a name="l00159"></a>00159 <span class="keywordflow">if</span> (tb[TCA_U32_INDEV]) {
<a name="l00160"></a>00160 <a class="code" href="group__attr.html#gaabddc8018334423d84088d241b4b7830" title="Copy string attribute payload into a sized buffer.">nla_strlcpy</a>(u->cu_indev, tb[TCA_U32_INDEV], IFNAMSIZ);
<a name="l00161"></a>00161 u->cu_mask |= U32_ATTR_INDEV;
<a name="l00162"></a>00162 }
<a name="l00163"></a>00163
<a name="l00164"></a>00164 <span class="keywordflow">return</span> 0;
<a name="l00165"></a>00165
<a name="l00166"></a>00166 errout_nomem:
<a name="l00167"></a>00167 err = nl_errno(ENOMEM);
<a name="l00168"></a>00168 errout:
<a name="l00169"></a>00169 <span class="keywordflow">return</span> err;
<a name="l00170"></a>00170 }
<a name="l00171"></a>00171
<a name="l00172"></a>00172 <span class="keyword">static</span> <span class="keywordtype">void</span> u32_free_data(<span class="keyword">struct</span> rtnl_cls *cls)
<a name="l00173"></a>00173 {
<a name="l00174"></a>00174 <span class="keyword">struct </span>rtnl_u32 *u = u32_cls(cls);
<a name="l00175"></a>00175
<a name="l00176"></a>00176 <span class="keywordflow">if</span> (!u)
<a name="l00177"></a>00177 <span class="keywordflow">return</span>;
<a name="l00178"></a>00178
<a name="l00179"></a>00179 <a class="code" href="group__data.html#ga35cbd02038e7abf0be6da4cb2a34189e" title="Free an abstract data object.">nl_data_free</a>(u->cu_selector);
<a name="l00180"></a>00180 <a class="code" href="group__data.html#ga35cbd02038e7abf0be6da4cb2a34189e" title="Free an abstract data object.">nl_data_free</a>(u->cu_act);
<a name="l00181"></a>00181 <a class="code" href="group__data.html#ga35cbd02038e7abf0be6da4cb2a34189e" title="Free an abstract data object.">nl_data_free</a>(u->cu_police);
<a name="l00182"></a>00182 <a class="code" href="group__data.html#ga35cbd02038e7abf0be6da4cb2a34189e" title="Free an abstract data object.">nl_data_free</a>(u->cu_pcnt);
<a name="l00183"></a>00183
<a name="l00184"></a>00184 free(cls->c_subdata);
<a name="l00185"></a>00185 }
<a name="l00186"></a>00186
<a name="l00187"></a>00187 <span class="keyword">static</span> <span class="keywordtype">int</span> u32_clone(<span class="keyword">struct</span> rtnl_cls *_dst, <span class="keyword">struct</span> rtnl_cls *_src)
<a name="l00188"></a>00188 {
<a name="l00189"></a>00189 <span class="keyword">struct </span>rtnl_u32 *dst, *src = u32_cls(_src);
<a name="l00190"></a>00190
<a name="l00191"></a>00191 <span class="keywordflow">if</span> (!src)
<a name="l00192"></a>00192 <span class="keywordflow">return</span> 0;
<a name="l00193"></a>00193
<a name="l00194"></a>00194 dst = u32_alloc(_dst);
<a name="l00195"></a>00195 <span class="keywordflow">if</span> (!dst)
<a name="l00196"></a>00196 <span class="keywordflow">return</span> nl_errno(ENOMEM);
<a name="l00197"></a>00197
<a name="l00198"></a>00198 <span class="keywordflow">if</span> (src->cu_selector)
<a name="l00199"></a>00199 <span class="keywordflow">if</span> (!(dst->cu_selector = <a class="code" href="group__data.html#ga64967fcb4916f66a2bd1a82292350e74" title="Clone an abstract data object.">nl_data_clone</a>(src->cu_selector)))
<a name="l00200"></a>00200 <span class="keywordflow">goto</span> errout;
<a name="l00201"></a>00201
<a name="l00202"></a>00202 <span class="keywordflow">if</span> (src->cu_act)
<a name="l00203"></a>00203 <span class="keywordflow">if</span> (!(dst->cu_act = <a class="code" href="group__data.html#ga64967fcb4916f66a2bd1a82292350e74" title="Clone an abstract data object.">nl_data_clone</a>(src->cu_act)))
<a name="l00204"></a>00204 <span class="keywordflow">goto</span> errout;
<a name="l00205"></a>00205
<a name="l00206"></a>00206 <span class="keywordflow">if</span> (src->cu_police)
<a name="l00207"></a>00207 <span class="keywordflow">if</span> (!(dst->cu_police = <a class="code" href="group__data.html#ga64967fcb4916f66a2bd1a82292350e74" title="Clone an abstract data object.">nl_data_clone</a>(src->cu_police)))
<a name="l00208"></a>00208 <span class="keywordflow">goto</span> errout;
<a name="l00209"></a>00209
<a name="l00210"></a>00210 <span class="keywordflow">if</span> (src->cu_pcnt)
<a name="l00211"></a>00211 <span class="keywordflow">if</span> (!(dst->cu_pcnt = <a class="code" href="group__data.html#ga64967fcb4916f66a2bd1a82292350e74" title="Clone an abstract data object.">nl_data_clone</a>(src->cu_pcnt)))
<a name="l00212"></a>00212 <span class="keywordflow">goto</span> errout;
<a name="l00213"></a>00213
<a name="l00214"></a>00214 <span class="keywordflow">return</span> 0;
<a name="l00215"></a>00215 errout:
<a name="l00216"></a>00216 <span class="keywordflow">return</span> nl_get_errno();
<a name="l00217"></a>00217 }
<a name="l00218"></a>00218
<a name="l00219"></a>00219 <span class="keyword">static</span> <span class="keywordtype">int</span> u32_dump_brief(<span class="keyword">struct</span> rtnl_cls *cls, <span class="keyword">struct</span> <a class="code" href="structnl__dump__params.html" title="Dumping parameters.">nl_dump_params</a> *p,
<a name="l00220"></a>00220 <span class="keywordtype">int</span> line)
<a name="l00221"></a>00221 {
<a name="l00222"></a>00222 <span class="keyword">struct </span>rtnl_u32 *u = u32_cls(cls);
<a name="l00223"></a>00223 <span class="keywordtype">char</span> buf[32];
<a name="l00224"></a>00224
<a name="l00225"></a>00225 <span class="keywordflow">if</span> (!u)
<a name="l00226"></a>00226 <span class="keywordflow">goto</span> ignore;
<a name="l00227"></a>00227
<a name="l00228"></a>00228 <span class="keywordflow">if</span> (u->cu_mask & U32_ATTR_DIVISOR)
<a name="l00229"></a>00229 dp_dump(p, <span class="stringliteral">" divisor %u"</span>, u->cu_divisor);
<a name="l00230"></a>00230 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (u->cu_mask & U32_ATTR_CLASSID)
<a name="l00231"></a>00231 dp_dump(p, <span class="stringliteral">" target %s"</span>,
<a name="l00232"></a>00232 <a class="code" href="group__tc.html#ga27fad2a239d4d8d932da0ce1bdbf1f9f" title="Convert a traffic control handle to a character string (Reentrant).">rtnl_tc_handle2str</a>(u->cu_classid, buf, <span class="keyword">sizeof</span>(buf)));
<a name="l00233"></a>00233
<a name="l00234"></a>00234 ignore:
<a name="l00235"></a>00235 <span class="keywordflow">return</span> line;
<a name="l00236"></a>00236 }
<a name="l00237"></a>00237
<a name="l00238"></a>00238 <span class="keyword">static</span> <span class="keywordtype">int</span> print_selector(<span class="keyword">struct</span> <a class="code" href="structnl__dump__params.html" title="Dumping parameters.">nl_dump_params</a> *p, <span class="keyword">struct</span> tc_u32_sel *sel,
<a name="l00239"></a>00239 <span class="keyword">struct</span> rtnl_cls *cls, <span class="keyword">struct</span> rtnl_u32 *u, <span class="keywordtype">int</span> line)
<a name="l00240"></a>00240 {
<a name="l00241"></a>00241 <span class="keywordtype">int</span> i;
<a name="l00242"></a>00242 <span class="keyword">struct </span>tc_u32_key *key;
<a name="l00243"></a>00243
<a name="l00244"></a>00244 <span class="keywordflow">if</span> (sel->hmask || sel->hoff) {
<a name="l00245"></a>00245 <span class="comment">/* I guess this will never be used since the kernel only</span>
<a name="l00246"></a>00246 <span class="comment"> * exports the selector if no divisor is set but hash offset</span>
<a name="l00247"></a>00247 <span class="comment"> * and hash mask make only sense in hash filters with divisor</span>
<a name="l00248"></a>00248 <span class="comment"> * set */</span>
<a name="l00249"></a>00249 dp_dump(p, <span class="stringliteral">" hash at %u & 0x%x"</span>, sel->hoff, sel->hmask);
<a name="l00250"></a>00250 }
<a name="l00251"></a>00251
<a name="l00252"></a>00252 <span class="keywordflow">if</span> (sel->flags & (TC_U32_OFFSET | TC_U32_VAROFFSET)) {
<a name="l00253"></a>00253 dp_dump(p, <span class="stringliteral">" offset at %u"</span>, sel->off);
<a name="l00254"></a>00254
<a name="l00255"></a>00255 <span class="keywordflow">if</span> (sel->flags & TC_U32_VAROFFSET)
<a name="l00256"></a>00256 dp_dump(p, <span class="stringliteral">" variable (at %u & 0x%x) >> %u"</span>,
<a name="l00257"></a>00257 sel->offoff, ntohs(sel->offmask), sel->offshift);
<a name="l00258"></a>00258 }
<a name="l00259"></a>00259
<a name="l00260"></a>00260 <span class="keywordflow">if</span> (sel->flags) {
<a name="l00261"></a>00261 <span class="keywordtype">int</span> flags = sel->flags;
<a name="l00262"></a>00262 dp_dump(p, <span class="stringliteral">" <"</span>);
<a name="l00263"></a>00263
<a name="l00264"></a>00264 <span class="preprocessor">#define PRINT_FLAG(f) if (flags & TC_U32_##f) { \</span>
<a name="l00265"></a>00265 <span class="preprocessor"> flags &= ~TC_U32_##f; dp_dump(p, #f "%s", flags ? "," : ""); }</span>
<a name="l00266"></a>00266 <span class="preprocessor"></span>
<a name="l00267"></a>00267 PRINT_FLAG(TERMINAL);
<a name="l00268"></a>00268 PRINT_FLAG(OFFSET);
<a name="l00269"></a>00269 PRINT_FLAG(VAROFFSET);
<a name="l00270"></a>00270 PRINT_FLAG(EAT);
<a name="l00271"></a>00271 <span class="preprocessor">#undef PRINT_FLAG</span>
<a name="l00272"></a>00272 <span class="preprocessor"></span>
<a name="l00273"></a>00273 dp_dump(p, <span class="stringliteral">">"</span>);
<a name="l00274"></a>00274 }
<a name="l00275"></a>00275
<a name="l00276"></a>00276
<a name="l00277"></a>00277 <span class="keywordflow">for</span> (i = 0; i < sel->nkeys; i++) {
<a name="l00278"></a>00278 key = (<span class="keyword">struct </span>tc_u32_key *) ((<span class="keywordtype">char</span> *) sel + <span class="keyword">sizeof</span>(*sel)) + i;
<a name="l00279"></a>00279
<a name="l00280"></a>00280 dp_dump(p, <span class="stringliteral">"\n"</span>);
<a name="l00281"></a>00281 dp_dump_line(p, line++, <span class="stringliteral">" match key at %s%u "</span>,
<a name="l00282"></a>00282 key->offmask ? <span class="stringliteral">"nexthdr+"</span> : <span class="stringliteral">""</span>, key->off);
<a name="l00283"></a>00283
<a name="l00284"></a>00284 <span class="keywordflow">if</span> (key->offmask)
<a name="l00285"></a>00285 dp_dump(p, <span class="stringliteral">"[0x%u] "</span>, key->offmask);
<a name="l00286"></a>00286
<a name="l00287"></a>00287 dp_dump(p, <span class="stringliteral">"& 0x%08x == 0x%08x"</span>, ntohl(key->mask), ntohl(key->val));
<a name="l00288"></a>00288
<a name="l00289"></a>00289 <span class="keywordflow">if</span> (p-><a class="code" href="structnl__dump__params.html#ae36d840078202bf028a6611d2e1f4ea5" title="Specifies the type of dump that is requested.">dp_type</a> == <a class="code" href="group__utils.html#ggacfb5566c73f0965c5241d7d49bc717e9a8ebedc55094df6175b84fb1230047a65" title="Dump all attributes including statistics.">NL_DUMP_STATS</a> &&
<a name="l00290"></a>00290 (u->cu_mask & U32_ATTR_PCNT)) {
<a name="l00291"></a>00291 <span class="keyword">struct </span>tc_u32_pcnt *pcnt = u->cu_pcnt->d_data;
<a name="l00292"></a>00292 dp_dump(p, <span class="stringliteral">" successful %"</span> PRIu64, pcnt->kcnts[i]);
<a name="l00293"></a>00293 }
<a name="l00294"></a>00294 }
<a name="l00295"></a>00295
<a name="l00296"></a>00296 <span class="keywordflow">return</span> line;
<a name="l00297"></a>00297 }
<a name="l00298"></a>00298
<a name="l00299"></a>00299
<a name="l00300"></a>00300 <span class="keyword">static</span> <span class="keywordtype">int</span> u32_dump_full(<span class="keyword">struct</span> rtnl_cls *cls, <span class="keyword">struct</span> <a class="code" href="structnl__dump__params.html" title="Dumping parameters.">nl_dump_params</a> *p,
<a name="l00301"></a>00301 <span class="keywordtype">int</span> line)
<a name="l00302"></a>00302 {
<a name="l00303"></a>00303 <span class="keyword">struct </span>rtnl_u32 *u = u32_cls(cls);
<a name="l00304"></a>00304 <span class="keyword">struct </span>tc_u32_sel *s;
<a name="l00305"></a>00305
<a name="l00306"></a>00306 <span class="keywordflow">if</span> (!u)
<a name="l00307"></a>00307 <span class="keywordflow">goto</span> ignore;
<a name="l00308"></a>00308
<a name="l00309"></a>00309 <span class="keywordflow">if</span> (!(u->cu_mask & U32_ATTR_SELECTOR)) {
<a name="l00310"></a>00310 dp_dump(p, <span class="stringliteral">"no-selector\n"</span>);
<a name="l00311"></a>00311 <span class="keywordflow">return</span> line;
<a name="l00312"></a>00312 }
<a name="l00313"></a>00313
<a name="l00314"></a>00314 s = u->cu_selector->d_data;
<a name="l00315"></a>00315
<a name="l00316"></a>00316 dp_dump(p, <span class="stringliteral">"nkeys %u "</span>, s->nkeys);
<a name="l00317"></a>00317
<a name="l00318"></a>00318 <span class="keywordflow">if</span> (u->cu_mask & U32_ATTR_HASH)
<a name="l00319"></a>00319 dp_dump(p, <span class="stringliteral">"ht key 0x%x hash 0x%u"</span>,
<a name="l00320"></a>00320 TC_U32_USERHTID(u->cu_hash), TC_U32_HASH(u->cu_hash));
<a name="l00321"></a>00321
<a name="l00322"></a>00322 <span class="keywordflow">if</span> (u->cu_mask & U32_ATTR_LINK)
<a name="l00323"></a>00323 dp_dump(p, <span class="stringliteral">"link %u "</span>, u->cu_link);
<a name="l00324"></a>00324
<a name="l00325"></a>00325 <span class="keywordflow">if</span> (u->cu_mask & U32_ATTR_INDEV)
<a name="l00326"></a>00326 dp_dump(p, <span class="stringliteral">"indev %s "</span>, u->cu_indev);
<a name="l00327"></a>00327
<a name="l00328"></a>00328 line = print_selector(p, s, cls, u, line);
<a name="l00329"></a>00329 dp_dump(p, <span class="stringliteral">"\n"</span>);
<a name="l00330"></a>00330
<a name="l00331"></a>00331 ignore:
<a name="l00332"></a>00332 <span class="keywordflow">return</span> line;
<a name="l00333"></a>00333
<a name="l00334"></a>00334 <span class="preprocessor">#if 0 </span>
<a name="l00335"></a>00335 <span class="preprocessor"></span><span class="preprocessor">#define U32_ATTR_ACTION 0x040</span>
<a name="l00336"></a>00336 <span class="preprocessor"></span><span class="preprocessor">#define U32_ATTR_POLICE 0x080</span>
<a name="l00337"></a>00337 <span class="preprocessor"></span>
<a name="l00338"></a>00338 <span class="keyword">struct </span>nl_data act;
<a name="l00339"></a>00339 <span class="keyword">struct </span>nl_data police;
<a name="l00340"></a>00340 <span class="preprocessor">#endif</span>
<a name="l00341"></a>00341 <span class="preprocessor"></span>}
<a name="l00342"></a>00342
<a name="l00343"></a>00343 <span class="keyword">static</span> <span class="keywordtype">int</span> u32_dump_stats(<span class="keyword">struct</span> rtnl_cls *cls, <span class="keyword">struct</span> <a class="code" href="structnl__dump__params.html" title="Dumping parameters.">nl_dump_params</a> *p,
<a name="l00344"></a>00344 <span class="keywordtype">int</span> line)
<a name="l00345"></a>00345 {
<a name="l00346"></a>00346 <span class="keyword">struct </span>rtnl_u32 *u = u32_cls(cls);
<a name="l00347"></a>00347
<a name="l00348"></a>00348 <span class="keywordflow">if</span> (!u)
<a name="l00349"></a>00349 <span class="keywordflow">goto</span> ignore;
<a name="l00350"></a>00350
<a name="l00351"></a>00351 <span class="keywordflow">if</span> (u->cu_mask & U32_ATTR_PCNT) {
<a name="l00352"></a>00352 <span class="keyword">struct </span>tc_u32_pcnt *pc = u->cu_pcnt->d_data;
<a name="l00353"></a>00353 dp_dump(p, <span class="stringliteral">"\n"</span>);
<a name="l00354"></a>00354 dp_dump_line(p, line++, <span class="stringliteral">"%s successful hits\n"</span>);
<a name="l00355"></a>00355 dp_dump_line(p, line++, <span class="stringliteral">"%s %8llu %8llu\n"</span>,
<a name="l00356"></a>00356 pc->rhit, pc->rcnt);
<a name="l00357"></a>00357 }
<a name="l00358"></a>00358
<a name="l00359"></a>00359 ignore:
<a name="l00360"></a>00360 <span class="keywordflow">return</span> line;
<a name="l00361"></a>00361 }
<a name="l00362"></a>00362
<a name="l00363"></a>00363 <span class="keyword">static</span> <span class="keyword">struct </span>nl_msg *u32_get_opts(<span class="keyword">struct</span> rtnl_cls *cls)
<a name="l00364"></a>00364 {
<a name="l00365"></a>00365 <span class="keyword">struct </span>rtnl_u32 *u;
<a name="l00366"></a>00366 <span class="keyword">struct </span>nl_msg *msg;
<a name="l00367"></a>00367
<a name="l00368"></a>00368 u = u32_cls(cls);
<a name="l00369"></a>00369 <span class="keywordflow">if</span> (!u)
<a name="l00370"></a>00370 <span class="keywordflow">return</span> NULL;
<a name="l00371"></a>00371
<a name="l00372"></a>00372 msg = <a class="code" href="group__msg.html#ga89c936bdf5e73455bb1640a0eb8a020d" title="Allocate a new netlink message with the default maximum payload size.">nlmsg_alloc</a>();
<a name="l00373"></a>00373 <span class="keywordflow">if</span> (!msg)
<a name="l00374"></a>00374 <span class="keywordflow">return</span> NULL;
<a name="l00375"></a>00375
<a name="l00376"></a>00376 <span class="keywordflow">if</span> (u->cu_mask & U32_ATTR_DIVISOR)
<a name="l00377"></a>00377 <a class="code" href="group__attr.html#ga9891f766dcebe6bdb2ce86f021c6f6e6" title="Add a u32 netlink attribute to a netlink message.">nla_put_u32</a>(msg, TCA_U32_DIVISOR, u->cu_divisor);
<a name="l00378"></a>00378
<a name="l00379"></a>00379 <span class="keywordflow">if</span> (u->cu_mask & U32_ATTR_HASH)
<a name="l00380"></a>00380 <a class="code" href="group__attr.html#ga9891f766dcebe6bdb2ce86f021c6f6e6" title="Add a u32 netlink attribute to a netlink message.">nla_put_u32</a>(msg, TCA_U32_HASH, u->cu_hash);
<a name="l00381"></a>00381
<a name="l00382"></a>00382 <span class="keywordflow">if</span> (u->cu_mask & U32_ATTR_CLASSID)
<a name="l00383"></a>00383 <a class="code" href="group__attr.html#ga9891f766dcebe6bdb2ce86f021c6f6e6" title="Add a u32 netlink attribute to a netlink message.">nla_put_u32</a>(msg, TCA_U32_CLASSID, u->cu_classid);
<a name="l00384"></a>00384
<a name="l00385"></a>00385 <span class="keywordflow">if</span> (u->cu_mask & U32_ATTR_LINK)
<a name="l00386"></a>00386 <a class="code" href="group__attr.html#ga9891f766dcebe6bdb2ce86f021c6f6e6" title="Add a u32 netlink attribute to a netlink message.">nla_put_u32</a>(msg, TCA_U32_LINK, u->cu_link);
<a name="l00387"></a>00387
<a name="l00388"></a>00388 <span class="keywordflow">if</span> (u->cu_mask & U32_ATTR_SELECTOR)
<a name="l00389"></a>00389 <a class="code" href="group__attr.html#gad07458aa26ae9a430fb9ff8d444b526d" title="Add an abstract data netlink attribute to a netlink message.">nla_put_data</a>(msg, TCA_U32_SEL, u->cu_selector);
<a name="l00390"></a>00390
<a name="l00391"></a>00391 <span class="keywordflow">if</span> (u->cu_mask & U32_ATTR_ACTION)
<a name="l00392"></a>00392 <a class="code" href="group__attr.html#gad07458aa26ae9a430fb9ff8d444b526d" title="Add an abstract data netlink attribute to a netlink message.">nla_put_data</a>(msg, TCA_U32_ACT, u->cu_act);
<a name="l00393"></a>00393
<a name="l00394"></a>00394 <span class="keywordflow">if</span> (u->cu_mask & U32_ATTR_POLICE)
<a name="l00395"></a>00395 <a class="code" href="group__attr.html#gad07458aa26ae9a430fb9ff8d444b526d" title="Add an abstract data netlink attribute to a netlink message.">nla_put_data</a>(msg, TCA_U32_POLICE, u->cu_police);
<a name="l00396"></a>00396
<a name="l00397"></a>00397 <span class="keywordflow">if</span> (u->cu_mask & U32_ATTR_INDEV)
<a name="l00398"></a>00398 <a class="code" href="group__attr.html#gacf85c1c8becd42e29f03670553b6e2f3" title="Add a string netlink attribute to a netlink message.">nla_put_string</a>(msg, TCA_U32_INDEV, u->cu_indev);
<a name="l00399"></a>00399
<a name="l00400"></a>00400 <span class="keywordflow">return</span> msg;
<a name="l00401"></a>00401 }
<a name="l00402"></a>00402 <span class="comment"></span>
<a name="l00403"></a>00403 <span class="comment">/**</span>
<a name="l00404"></a>00404 <span class="comment"> * @name Attribute Modifications</span>
<a name="l00405"></a>00405 <span class="comment"> * @{</span>
<a name="l00406"></a>00406 <span class="comment"> */</span>
<a name="l00407"></a>00407
<a name="l00408"></a>00408 <span class="keywordtype">void</span> rtnl_u32_set_handle(<span class="keyword">struct</span> rtnl_cls *cls, <span class="keywordtype">int</span> htid, <span class="keywordtype">int</span> hash,
<a name="l00409"></a>00409 <span class="keywordtype">int</span> nodeid)
<a name="l00410"></a>00410 {
<a name="l00411"></a>00411 uint32_t handle = (htid << 20) | (hash << 12) | nodeid;
<a name="l00412"></a>00412
<a name="l00413"></a>00413 tca_set_handle((<span class="keyword">struct</span> rtnl_tca *) cls, handle );
<a name="l00414"></a>00414 }
<a name="l00415"></a>00415
<a name="l00416"></a>00416 <span class="keywordtype">int</span> rtnl_u32_set_classid(<span class="keyword">struct</span> rtnl_cls *cls, uint32_t classid)
<a name="l00417"></a>00417 {
<a name="l00418"></a>00418 <span class="keyword">struct </span>rtnl_u32 *u;
<a name="l00419"></a>00419
<a name="l00420"></a>00420 u = u32_alloc(cls);
<a name="l00421"></a>00421 <span class="keywordflow">if</span> (!u)
<a name="l00422"></a>00422 <span class="keywordflow">return</span> nl_errno(ENOMEM);
<a name="l00423"></a>00423
<a name="l00424"></a>00424 u->cu_classid = classid;
<a name="l00425"></a>00425 u->cu_mask |= U32_ATTR_CLASSID;
<a name="l00426"></a>00426
<a name="l00427"></a>00427 <span class="keywordflow">return</span> 0;
<a name="l00428"></a>00428 }
<a name="l00429"></a>00429 <span class="comment"></span>
<a name="l00430"></a>00430 <span class="comment">/** @} */</span>
<a name="l00431"></a>00431 <span class="comment"></span>
<a name="l00432"></a>00432 <span class="comment">/**</span>
<a name="l00433"></a>00433 <span class="comment"> * @name Selector Modifications</span>
<a name="l00434"></a>00434 <span class="comment"> * @{</span>
<a name="l00435"></a>00435 <span class="comment"> */</span>
<a name="l00436"></a>00436
<a name="l00437"></a>00437 <span class="keywordtype">int</span> rtnl_u32_set_flags(<span class="keyword">struct</span> rtnl_cls *cls, <span class="keywordtype">int</span> flags)
<a name="l00438"></a>00438 {
<a name="l00439"></a>00439 <span class="keyword">struct </span>tc_u32_sel *sel;
<a name="l00440"></a>00440 <span class="keyword">struct </span>rtnl_u32 *u;
<a name="l00441"></a>00441
<a name="l00442"></a>00442 u = u32_alloc(cls);
<a name="l00443"></a>00443 <span class="keywordflow">if</span> (!u)
<a name="l00444"></a>00444 <span class="keywordflow">return</span> nl_errno(ENOMEM);
<a name="l00445"></a>00445
<a name="l00446"></a>00446 sel = u32_selector_alloc(u);
<a name="l00447"></a>00447 <span class="keywordflow">if</span> (!sel)
<a name="l00448"></a>00448 <span class="keywordflow">return</span> nl_errno(ENOMEM);
<a name="l00449"></a>00449
<a name="l00450"></a>00450 sel->flags |= flags;
<a name="l00451"></a>00451 u->cu_mask |= U32_ATTR_SELECTOR;
<a name="l00452"></a>00452
<a name="l00453"></a>00453 <span class="keywordflow">return</span> 0;
<a name="l00454"></a>00454 }
<a name="l00455"></a>00455 <span class="comment"></span>
<a name="l00456"></a>00456 <span class="comment">/**</span>
<a name="l00457"></a>00457 <span class="comment"> * Append new 32-bit key to the selector</span>
<a name="l00458"></a>00458 <span class="comment"> *</span>
<a name="l00459"></a>00459 <span class="comment"> * @arg cls classifier to be modifier</span>
<a name="l00460"></a>00460 <span class="comment"> * @arg val value to be matched (network byte-order)</span>
<a name="l00461"></a>00461 <span class="comment"> * @arg mask mask to be applied before matching (network byte-order)</span>
<a name="l00462"></a>00462 <span class="comment"> * @arg off offset, in bytes, to start matching</span>
<a name="l00463"></a>00463 <span class="comment"> * @arg offmask offset mask</span>
<a name="l00464"></a>00464 <span class="comment"> *</span>
<a name="l00465"></a>00465 <span class="comment"> * General selectors define the pattern, mask and offset the pattern will be</span>
<a name="l00466"></a>00466 <span class="comment"> * matched to the packet contents. Using the general selectors you can match</span>
<a name="l00467"></a>00467 <span class="comment"> * virtually any single bit in the IP (or upper layer) header.</span>
<a name="l00468"></a>00468 <span class="comment"> *</span>
<a name="l00469"></a>00469 <span class="comment">*/</span>
<a name="l00470"></a><a class="code" href="group__u32.html#gaace3c52edfb9859a6586541ece0b144e">00470</a> <span class="keywordtype">int</span> <a class="code" href="group__u32.html#gaace3c52edfb9859a6586541ece0b144e" title="Append new 32-bit key to the selector.">rtnl_u32_add_key</a>(<span class="keyword">struct</span> rtnl_cls *cls, uint32_t val, uint32_t mask,
<a name="l00471"></a>00471 <span class="keywordtype">int</span> off, <span class="keywordtype">int</span> offmask)
<a name="l00472"></a>00472 {
<a name="l00473"></a>00473 <span class="keyword">struct </span>tc_u32_sel *sel;
<a name="l00474"></a>00474 <span class="keyword">struct </span>rtnl_u32 *u;
<a name="l00475"></a>00475 <span class="keywordtype">int</span> err;
<a name="l00476"></a>00476
<a name="l00477"></a>00477 u = u32_alloc(cls);
<a name="l00478"></a>00478 <span class="keywordflow">if</span> (!u)
<a name="l00479"></a>00479 <span class="keywordflow">return</span> nl_errno(ENOMEM);
<a name="l00480"></a>00480
<a name="l00481"></a>00481 sel = u32_selector_alloc(u);
<a name="l00482"></a>00482 <span class="keywordflow">if</span> (!sel)
<a name="l00483"></a>00483 <span class="keywordflow">return</span> nl_errno(ENOMEM);
<a name="l00484"></a>00484
<a name="l00485"></a>00485 err = <a class="code" href="group__data.html#ga81b8ad4a0fd04f8d80bafecc323f2a35" title="Append data to an abstract data object.">nl_data_append</a>(u->cu_selector, NULL, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> tc_u32_key));
<a name="l00486"></a>00486 <span class="keywordflow">if</span> (err < 0)
<a name="l00487"></a>00487 <span class="keywordflow">return</span> err;
<a name="l00488"></a>00488
<a name="l00489"></a>00489 <span class="comment">/* the selector might have been moved by realloc */</span>
<a name="l00490"></a>00490 sel = u32_selector(u);
<a name="l00491"></a>00491
<a name="l00492"></a>00492 sel->keys[sel->nkeys].mask = mask;
<a name="l00493"></a>00493 sel->keys[sel->nkeys].val = val & mask;
<a name="l00494"></a>00494 sel->keys[sel->nkeys].off = off;
<a name="l00495"></a>00495 sel->keys[sel->nkeys].offmask = offmask;
<a name="l00496"></a>00496 sel->nkeys++;
<a name="l00497"></a>00497 u->cu_mask |= U32_ATTR_SELECTOR;
<a name="l00498"></a>00498
<a name="l00499"></a>00499 <span class="keywordflow">return</span> 0;
<a name="l00500"></a>00500 }
<a name="l00501"></a>00501
<a name="l00502"></a>00502 <span class="keywordtype">int</span> rtnl_u32_add_key_uint8(<span class="keyword">struct</span> rtnl_cls *cls, uint8_t val, uint8_t mask,
<a name="l00503"></a>00503 <span class="keywordtype">int</span> off, <span class="keywordtype">int</span> offmask)
<a name="l00504"></a>00504 {
<a name="l00505"></a>00505 <span class="keywordtype">int</span> shift = 24 - 8 * (off & 3);
<a name="l00506"></a>00506
<a name="l00507"></a>00507 <span class="keywordflow">return</span> <a class="code" href="group__u32.html#gaace3c52edfb9859a6586541ece0b144e" title="Append new 32-bit key to the selector.">rtnl_u32_add_key</a>(cls, htonl((uint32_t)val << shift),
<a name="l00508"></a>00508 htonl((uint32_t)mask << shift),
<a name="l00509"></a>00509 off & ~3, offmask);
<a name="l00510"></a>00510 }
<a name="l00511"></a>00511 <span class="comment"></span>
<a name="l00512"></a>00512 <span class="comment">/**</span>
<a name="l00513"></a>00513 <span class="comment"> * Append new selector key to match a 16-bit number</span>
<a name="l00514"></a>00514 <span class="comment"> *</span>
<a name="l00515"></a>00515 <span class="comment"> * @arg cls classifier to be modified</span>
<a name="l00516"></a>00516 <span class="comment"> * @arg val value to be matched (host byte-order)</span>
<a name="l00517"></a>00517 <span class="comment"> * @arg mask mask to be applied before matching (host byte-order)</span>
<a name="l00518"></a>00518 <span class="comment"> * @arg off offset, in bytes, to start matching</span>
<a name="l00519"></a>00519 <span class="comment"> * @arg offmask offset mask</span>
<a name="l00520"></a>00520 <span class="comment">*/</span>
<a name="l00521"></a><a class="code" href="group__u32.html#gad152db883300427f20003f6ccfd2eb24">00521</a> <span class="keywordtype">int</span> <a class="code" href="group__u32.html#gad152db883300427f20003f6ccfd2eb24" title="Append new selector key to match a 16-bit number.">rtnl_u32_add_key_uint16</a>(<span class="keyword">struct</span> rtnl_cls *cls, uint16_t val, uint16_t mask,
<a name="l00522"></a>00522 <span class="keywordtype">int</span> off, <span class="keywordtype">int</span> offmask)
<a name="l00523"></a>00523 {
<a name="l00524"></a>00524 <span class="keywordtype">int</span> shift = ((off & 3) == 0 ? 16 : 0);
<a name="l00525"></a>00525 <span class="keywordflow">if</span> (off % 2)
<a name="l00526"></a>00526 <span class="keywordflow">return</span> nl_error(EINVAL, <span class="stringliteral">"Invalid offset alignment"</span>);
<a name="l00527"></a>00527
<a name="l00528"></a>00528 <span class="keywordflow">return</span> <a class="code" href="group__u32.html#gaace3c52edfb9859a6586541ece0b144e" title="Append new 32-bit key to the selector.">rtnl_u32_add_key</a>(cls, htonl((uint32_t)val << shift),
<a name="l00529"></a>00529 htonl((uint32_t)mask << shift),
<a name="l00530"></a>00530 off & ~3, offmask);
<a name="l00531"></a>00531 }
<a name="l00532"></a>00532 <span class="comment"></span>
<a name="l00533"></a>00533 <span class="comment">/**</span>
<a name="l00534"></a>00534 <span class="comment"> * Append new selector key to match a 32-bit number</span>
<a name="l00535"></a>00535 <span class="comment"> *</span>
<a name="l00536"></a>00536 <span class="comment"> * @arg cls classifier to be modified</span>
<a name="l00537"></a>00537 <span class="comment"> * @arg val value to be matched (host byte-order)</span>
<a name="l00538"></a>00538 <span class="comment"> * @arg mask mask to be applied before matching (host byte-order)</span>
<a name="l00539"></a>00539 <span class="comment"> * @arg off offset, in bytes, to start matching</span>
<a name="l00540"></a>00540 <span class="comment"> * @arg offmask offset mask</span>
<a name="l00541"></a>00541 <span class="comment">*/</span>
<a name="l00542"></a><a class="code" href="group__u32.html#gac6fb9c818db206d9252bc4c44986c68e">00542</a> <span class="keywordtype">int</span> <a class="code" href="group__u32.html#gac6fb9c818db206d9252bc4c44986c68e" title="Append new selector key to match a 32-bit number.">rtnl_u32_add_key_uint32</a>(<span class="keyword">struct</span> rtnl_cls *cls, uint32_t val, uint32_t mask,
<a name="l00543"></a>00543 <span class="keywordtype">int</span> off, <span class="keywordtype">int</span> offmask)
<a name="l00544"></a>00544 {
<a name="l00545"></a>00545 <span class="keywordflow">return</span> <a class="code" href="group__u32.html#gaace3c52edfb9859a6586541ece0b144e" title="Append new 32-bit key to the selector.">rtnl_u32_add_key</a>(cls, htonl(val), htonl(mask),
<a name="l00546"></a>00546 off & ~3, offmask);
<a name="l00547"></a>00547 }
<a name="l00548"></a>00548
<a name="l00549"></a>00549 <span class="keywordtype">int</span> rtnl_u32_add_key_in_addr(<span class="keyword">struct</span> rtnl_cls *cls, <span class="keyword">struct</span> in_addr *addr,
<a name="l00550"></a>00550 uint8_t bitmask, <span class="keywordtype">int</span> off, <span class="keywordtype">int</span> offmask)
<a name="l00551"></a>00551 {
<a name="l00552"></a>00552 uint32_t mask = 0xFFFFFFFF << (32 - bitmask);
<a name="l00553"></a>00553 <span class="keywordflow">return</span> <a class="code" href="group__u32.html#gaace3c52edfb9859a6586541ece0b144e" title="Append new 32-bit key to the selector.">rtnl_u32_add_key</a>(cls, addr->s_addr, htonl(mask), off, offmask);
<a name="l00554"></a>00554 }
<a name="l00555"></a>00555
<a name="l00556"></a>00556 <span class="keywordtype">int</span> rtnl_u32_add_key_in6_addr(<span class="keyword">struct</span> rtnl_cls *cls, <span class="keyword">struct</span> in6_addr *addr,
<a name="l00557"></a>00557 uint8_t bitmask, <span class="keywordtype">int</span> off, <span class="keywordtype">int</span> offmask)
<a name="l00558"></a>00558 {
<a name="l00559"></a>00559 <span class="keywordtype">int</span> i, err;
<a name="l00560"></a>00560
<a name="l00561"></a>00561 <span class="keywordflow">for</span> (i = 1; i <= 4; i++) {
<a name="l00562"></a>00562 <span class="keywordflow">if</span> (32 * i - bitmask <= 0) {
<a name="l00563"></a>00563 <span class="keywordflow">if</span> ((err = <a class="code" href="group__u32.html#gaace3c52edfb9859a6586541ece0b144e" title="Append new 32-bit key to the selector.">rtnl_u32_add_key</a>(cls, addr->s6_addr32[i-1],
<a name="l00564"></a>00564 0xFFFFFFFF, off+4*(i-1), offmask)) < 0)
<a name="l00565"></a>00565 <span class="keywordflow">return</span> err;
<a name="l00566"></a>00566 }
<a name="l00567"></a>00567 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (32 * i - bitmask < 32) {
<a name="l00568"></a>00568 uint32_t mask = 0xFFFFFFFF << (32 * i - bitmask);
<a name="l00569"></a>00569 <span class="keywordflow">if</span> ((err = <a class="code" href="group__u32.html#gaace3c52edfb9859a6586541ece0b144e" title="Append new 32-bit key to the selector.">rtnl_u32_add_key</a>(cls, addr->s6_addr32[i-1],
<a name="l00570"></a>00570 htonl(mask), off+4*(i-1), offmask)) < 0)
<a name="l00571"></a>00571 <span class="keywordflow">return</span> err;
<a name="l00572"></a>00572 }
<a name="l00573"></a>00573 <span class="comment">/* otherwise, if (32*i - bitmask >= 32) no key is generated */</span>
<a name="l00574"></a>00574 }
<a name="l00575"></a>00575
<a name="l00576"></a>00576 <span class="keywordflow">return</span> 0;
<a name="l00577"></a>00577 }
<a name="l00578"></a>00578 <span class="comment"></span>
<a name="l00579"></a>00579 <span class="comment">/** @} */</span>
<a name="l00580"></a>00580
<a name="l00581"></a>00581 <span class="keyword">static</span> <span class="keyword">struct </span><a class="code" href="structrtnl__cls__ops.html" title="Classifier operations.">rtnl_cls_ops</a> u32_ops = {
<a name="l00582"></a>00582 .<a class="code" href="structrtnl__cls__ops.html#aefa372f798d154453883161cc7bd1b80" title="Kind/Name of classifier.">co_kind</a> = <span class="stringliteral">"u32"</span>,
<a name="l00583"></a>00583 .co_msg_parser = u32_msg_parser,
<a name="l00584"></a>00584 .co_free_data = u32_free_data,
<a name="l00585"></a>00585 .co_clone = u32_clone,
<a name="l00586"></a>00586 .co_get_opts = u32_get_opts,
<a name="l00587"></a>00587 .co_dump[<a class="code" href="group__utils.html#ggacfb5566c73f0965c5241d7d49bc717e9a5597887c080d5ecae358b6065a4048fd" title="Dump object in a brief one-liner.">NL_DUMP_BRIEF</a>] = u32_dump_brief,
<a name="l00588"></a>00588 .co_dump[<a class="code" href="group__utils.html#ggacfb5566c73f0965c5241d7d49bc717e9a1445106c7af529b2c99ee289fbcd3179" title="Dump all attributes but no statistics.">NL_DUMP_FULL</a>] = u32_dump_full,
<a name="l00589"></a>00589 .co_dump[<a class="code" href="group__utils.html#ggacfb5566c73f0965c5241d7d49bc717e9a8ebedc55094df6175b84fb1230047a65" title="Dump all attributes including statistics.">NL_DUMP_STATS</a>] = u32_dump_stats,
<a name="l00590"></a>00590 };
<a name="l00591"></a>00591
<a name="l00592"></a>00592 <span class="keyword">static</span> <span class="keywordtype">void</span> __init u32_init(<span class="keywordtype">void</span>)
<a name="l00593"></a>00593 {
<a name="l00594"></a>00594 <a class="code" href="group__cls__api.html#ga9cfec6c1566e00f9ca77cce6839dbc41" title="Register a classifier module.">rtnl_cls_register</a>(&u32_ops);
<a name="l00595"></a>00595 }
<a name="l00596"></a>00596
<a name="l00597"></a>00597 <span class="keyword">static</span> <span class="keywordtype">void</span> __exit u32_exit(<span class="keywordtype">void</span>)
<a name="l00598"></a>00598 {
<a name="l00599"></a>00599 <a class="code" href="group__cls__api.html#ga271e9fdd32cfffd6b5f4c9c53db8e0da" title="Unregister a classifier module.">rtnl_cls_unregister</a>(&u32_ops);
<a name="l00600"></a>00600 }
<a name="l00601"></a>00601 <span class="comment"></span>
<a name="l00602"></a>00602 <span class="comment">/** @} */</span>
</pre></div></div>
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