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<div class="title">pbuf.h File Reference</div> </div>
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<div class="textblock"><code>#include <<a class="el" href="opt_8h_source.html">net/opt.h</a>></code><br />
<code>#include <<a class="el" href="err_8h_source.html">net/err.h</a>></code><br />
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Include dependency graph for pbuf.h:</div>
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<div class="center"><img src="pbuf_8h__incl.png" border="0" usemap="#C_1_2Dev_2git_2UbixOS_2sys_2include_2net_2pbuf_8h" alt=""/></div>
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This graph shows which files directly or indirectly include this file:</div>
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<p><a href="pbuf_8h_source.html">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="nested-classes"></a>
Data Structures</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structpbuf.html">pbuf</a></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structpbuf__rom.html">pbuf_rom</a></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a>
Macros</h2></td></tr>
<tr class="memitem:a64174c5169b48dc17674324afd9c63b9"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="pbuf_8h.html#a64174c5169b48dc17674324afd9c63b9">LWIP_SUPPORT_CUSTOM_PBUF</a>   ((<a class="el" href="group__lwip__opts__ipv4.html#gaf85c8bdd5035b6cada790b4cc2a209a4">IP_FRAG</a> && !<a class="el" href="group__lwip__opts__netif.html#gabafb9f64a80e51b56c0abbcfc1f7e04e">LWIP_NETIF_TX_SINGLE_PBUF</a>) || (<a class="el" href="group__lwip__opts__ipv6.html#ga872e3bb3fe2212156d66b18fccc9643f">LWIP_IPV6</a> && <a class="el" href="group__lwip__opts__ipv6.html#ga9ab6269f3087f6d9f7b2c7181ef043c3">LWIP_IPV6_FRAG</a>))</td></tr>
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<tr class="memitem:a1f31e5e7b39e90b9b52654f543bb8fc5"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="pbuf_8h.html#a1f31e5e7b39e90b9b52654f543bb8fc5">PBUF_CHECK_FREE_OOSEQ</a>()</td></tr>
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<tr class="memitem:af78a7e1815dc0e31884d095b666d997f"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="pbuf_8h.html#af78a7e1815dc0e31884d095b666d997f">PBUF_FLAG_IS_CUSTOM</a>   0x02U</td></tr>
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<tr class="memitem:a6772c16662bbb78597399add086500c0"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="pbuf_8h.html#a6772c16662bbb78597399add086500c0">PBUF_FLAG_LLBCAST</a>   0x08U</td></tr>
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<tr class="memitem:ac0d56cde47aca24ef410d730d7c89887"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="pbuf_8h.html#ac0d56cde47aca24ef410d730d7c89887">PBUF_FLAG_LLMCAST</a>   0x10U</td></tr>
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<tr class="memitem:ab8ad153151a8c157335d9c0cedc007e6"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="pbuf_8h.html#ab8ad153151a8c157335d9c0cedc007e6">PBUF_FLAG_MCASTLOOP</a>   0x04U</td></tr>
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<tr class="memitem:a018a6499e357f8a1373321f802a82930"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="pbuf_8h.html#a018a6499e357f8a1373321f802a82930">PBUF_FLAG_PUSH</a>   0x01U</td></tr>
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<tr class="memitem:a36a915aa2f6a188baa2862881407971e"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="pbuf_8h.html#a36a915aa2f6a188baa2862881407971e">PBUF_FLAG_TCP_FIN</a>   0x20U</td></tr>
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<tr class="memitem:a0c9b6a35471ebe1628ffe74bbc67f0b4"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="pbuf_8h.html#a0c9b6a35471ebe1628ffe74bbc67f0b4">pbuf_init</a>()</td></tr>
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<tr class="memitem:aae0fea237167bb06ea4dc5333df5b0a7"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="pbuf_8h.html#aae0fea237167bb06ea4dc5333df5b0a7">PBUF_IP_HLEN</a>   20</td></tr>
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<tr class="memitem:ac54b0f161128a32c7419c33b893a5106"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="pbuf_8h.html#ac54b0f161128a32c7419c33b893a5106">PBUF_POOL_FREE_OOSEQ</a>   1</td></tr>
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<tr class="memitem:af9da2e1ca60dc0c584938ccc5d662307"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="pbuf_8h.html#af9da2e1ca60dc0c584938ccc5d662307">PBUF_TRANSPORT_HLEN</a>   20</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="enum-members"></a>
Enumerations</h2></td></tr>
<tr class="memitem:gaee1baa59bb2f85ba575b5a8619ac1ebf"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pbuf.html#gaee1baa59bb2f85ba575b5a8619ac1ebf">pbuf_layer</a> { <br />
  <a class="el" href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfa2ded3594a3977f8bf9cf09552be327b5">PBUF_TRANSPORT</a>,
<a class="el" href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfafcc1e506061ba69dfa142eb6b3da5f13">PBUF_IP</a>,
<a class="el" href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfab4de441e737330558b609a990cd17346">PBUF_LINK</a>,
<a class="el" href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfa0ff039585f05f9208bcb66c2d37783e2">PBUF_RAW_TX</a>,
<br />
  <a class="el" href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfa21116654fbab6d5a4dfeb87a1bb8f0ba">PBUF_RAW</a>
<br />
}</td></tr>
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<tr class="memitem:gab7e0e32fcc292c0d7107721766ed92fb"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pbuf.html#gab7e0e32fcc292c0d7107721766ed92fb">pbuf_type</a> { <a class="el" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac5e9f28455bca98944a030d4b84ecfab">PBUF_RAM</a>,
<a class="el" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac120b0fe39efe35bb682e4aa3b82e2c9">PBUF_ROM</a>,
<a class="el" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac9b6ba960fdea6f2e8f35c8313b77e4e">PBUF_REF</a>,
<a class="el" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbae969347127387b9b59a23ccd24b76d21">PBUF_POOL</a>
}</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:gacfcb0a2af918658ba0afe36499c65f47"><td class="memItemLeft" align="right" valign="top">struct <a class="el" href="structpbuf.html">pbuf</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pbuf.html#gacfcb0a2af918658ba0afe36499c65f47">pbuf_alloc</a> (<a class="el" href="group__pbuf.html#gaee1baa59bb2f85ba575b5a8619ac1ebf">pbuf_layer</a> l, <a class="el" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> length, <a class="el" href="group__pbuf.html#gab7e0e32fcc292c0d7107721766ed92fb">pbuf_type</a> type)</td></tr>
<tr class="separator:gacfcb0a2af918658ba0afe36499c65f47"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga82429084fe29015509c9b4a072707cd4"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pbuf.html#ga82429084fe29015509c9b4a072707cd4">pbuf_cat</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *head, struct <a class="el" href="structpbuf.html">pbuf</a> *tail)</td></tr>
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<tr class="memitem:ga831c9a72bda1d3bd4c7b96f5a0e3b891"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pbuf.html#ga831c9a72bda1d3bd4c7b96f5a0e3b891">pbuf_chain</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *head, struct <a class="el" href="structpbuf.html">pbuf</a> *tail)</td></tr>
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<tr class="memitem:a5df7ac5ae59012fe9aeddba375a72190"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="pbuf_8h.html#a5df7ac5ae59012fe9aeddba375a72190">pbuf_clen</a> (<a class="el" href="cdefs_8h.html#a2c212835823e3c54a8ab6d95c652660e">const</a> struct <a class="el" href="structpbuf.html">pbuf</a> *p)</td></tr>
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<tr class="memitem:ga54ac7b116c6f53c704cbf74f35a8b35c"><td class="memItemLeft" align="right" valign="top">struct <a class="el" href="structpbuf.html">pbuf</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pbuf.html#ga54ac7b116c6f53c704cbf74f35a8b35c">pbuf_coalesce</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *p, <a class="el" href="group__pbuf.html#gaee1baa59bb2f85ba575b5a8619ac1ebf">pbuf_layer</a> layer)</td></tr>
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<tr class="memitem:gaba88511dee3df4b631fde691f421320d"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pbuf.html#gaba88511dee3df4b631fde691f421320d">pbuf_copy</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *p_to, <a class="el" href="cdefs_8h.html#a2c212835823e3c54a8ab6d95c652660e">const</a> struct <a class="el" href="structpbuf.html">pbuf</a> *p_from)</td></tr>
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<tr class="memitem:gac2f1f58fd36042e82af46f5015720899"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pbuf.html#gac2f1f58fd36042e82af46f5015720899">pbuf_copy_partial</a> (<a class="el" href="cdefs_8h.html#a2c212835823e3c54a8ab6d95c652660e">const</a> struct <a class="el" href="structpbuf.html">pbuf</a> *p, void *dataptr, <a class="el" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> len, <a class="el" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> offset)</td></tr>
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<tr class="memitem:abf3d29c4f43986b4cb5eb314d5b9729d"><td class="memItemLeft" align="right" valign="top">struct <a class="el" href="structpbuf.html">pbuf</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="pbuf_8h.html#abf3d29c4f43986b4cb5eb314d5b9729d">pbuf_dechain</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *p)</td></tr>
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<tr class="memitem:gab0dd696fb4b6bc65e548944584f1738b"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *p)</td></tr>
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<tr class="memitem:ga6d803d9945bffb7ad97743f2fa503da6"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pbuf.html#ga6d803d9945bffb7ad97743f2fa503da6">pbuf_get_at</a> (<a class="el" href="cdefs_8h.html#a2c212835823e3c54a8ab6d95c652660e">const</a> struct <a class="el" href="structpbuf.html">pbuf</a> *p, <a class="el" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> offset)</td></tr>
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<tr class="memitem:aaa17c1951cf2d207b6adfd3947d91f00"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="pbuf_8h.html#aaa17c1951cf2d207b6adfd3947d91f00">pbuf_header</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *p, <a class="el" href="group__compiler__abstraction.html#gacf46f4df0ebab84edebcb69967fdf86b">s16_t</a> header_size)</td></tr>
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<tr class="memitem:a27480c41c34021d4417691d327163626"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="pbuf_8h.html#a27480c41c34021d4417691d327163626">pbuf_header_force</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *p, <a class="el" href="group__compiler__abstraction.html#gacf46f4df0ebab84edebcb69967fdf86b">s16_t</a> header_size)</td></tr>
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<tr class="memitem:ga2170ccbbb13238380dbb203ee1b85974"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pbuf.html#ga2170ccbbb13238380dbb203ee1b85974">pbuf_memcmp</a> (<a class="el" href="cdefs_8h.html#a2c212835823e3c54a8ab6d95c652660e">const</a> struct <a class="el" href="structpbuf.html">pbuf</a> *p, <a class="el" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> offset, <a class="el" href="cdefs_8h.html#a2c212835823e3c54a8ab6d95c652660e">const</a> void *s2, <a class="el" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> n)</td></tr>
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<tr class="memitem:gaf76863707dc02993eae116574b1ea03f"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pbuf.html#gaf76863707dc02993eae116574b1ea03f">pbuf_put_at</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *p, <a class="el" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> offset, <a class="el" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> data)</td></tr>
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<tr class="memitem:ga50abfe830a33a1a47a562febee66015d"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pbuf.html#ga50abfe830a33a1a47a562febee66015d">pbuf_realloc</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *p, <a class="el" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> size)</td></tr>
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<tr class="memitem:ga77f6bbd69e45e542014d9c547c7da74e"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pbuf.html#ga77f6bbd69e45e542014d9c547c7da74e">pbuf_ref</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *p)</td></tr>
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<tr class="memitem:ga6a961522d81f0327aaf4d4ee6d96c583"><td class="memItemLeft" align="right" valign="top">struct <a class="el" href="structpbuf.html">pbuf</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pbuf.html#ga6a961522d81f0327aaf4d4ee6d96c583">pbuf_skip</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *in, <a class="el" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> in_offset, <a class="el" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> *out_offset)</td></tr>
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<tr class="memitem:a9ba3f7b705309ceadb147692fd5a1c7d"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="pbuf_8h.html#a9ba3f7b705309ceadb147692fd5a1c7d">pbuf_strstr</a> (<a class="el" href="cdefs_8h.html#a2c212835823e3c54a8ab6d95c652660e">const</a> struct <a class="el" href="structpbuf.html">pbuf</a> *p, <a class="el" href="cdefs_8h.html#a2c212835823e3c54a8ab6d95c652660e">const</a> char *substr)</td></tr>
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<tr class="memitem:gad1e31e370271335b197272af2724ca85"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pbuf.html#gad1e31e370271335b197272af2724ca85">pbuf_take</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *<a class="el" href="structbuf.html">buf</a>, <a class="el" href="cdefs_8h.html#a2c212835823e3c54a8ab6d95c652660e">const</a> void *dataptr, <a class="el" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> len)</td></tr>
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<tr class="memitem:gae1cf2bf7454ff87ff377b0b2262f9b44"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pbuf.html#gae1cf2bf7454ff87ff377b0b2262f9b44">pbuf_take_at</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *<a class="el" href="structbuf.html">buf</a>, <a class="el" href="cdefs_8h.html#a2c212835823e3c54a8ab6d95c652660e">const</a> void *dataptr, <a class="el" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> len, <a class="el" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> offset)</td></tr>
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<tr class="memitem:ga839f342803b0cf89049744124c5a98ad"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pbuf.html#ga839f342803b0cf89049744124c5a98ad">pbuf_try_get_at</a> (<a class="el" href="cdefs_8h.html#a2c212835823e3c54a8ab6d95c652660e">const</a> struct <a class="el" href="structpbuf.html">pbuf</a> *p, <a class="el" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> offset)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>pbuf API </p>
<p class="definition">Definition in file <a class="el" href="pbuf_8h_source.html">pbuf.h</a>.</p>
</div><h2 class="groupheader">Macro Definition Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a64174c5169b48dc17674324afd9c63b9">◆ </a></span>LWIP_SUPPORT_CUSTOM_PBUF</h2>
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<td class="memname">#define LWIP_SUPPORT_CUSTOM_PBUF   ((<a class="el" href="group__lwip__opts__ipv4.html#gaf85c8bdd5035b6cada790b4cc2a209a4">IP_FRAG</a> && !<a class="el" href="group__lwip__opts__netif.html#gabafb9f64a80e51b56c0abbcfc1f7e04e">LWIP_NETIF_TX_SINGLE_PBUF</a>) || (<a class="el" href="group__lwip__opts__ipv6.html#ga872e3bb3fe2212156d66b18fccc9643f">LWIP_IPV6</a> && <a class="el" href="group__lwip__opts__ipv6.html#ga9ab6269f3087f6d9f7b2c7181ef043c3">LWIP_IPV6_FRAG</a>))</td>
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<p>LWIP_SUPPORT_CUSTOM_PBUF==1: Custom pbufs behave much like their pbuf type but they are allocated by external code (initialised by calling pbuf_alloced_custom()) and when pbuf_free gives up their last reference, they are freed by calling pbuf_custom->custom_free_function(). Currently, the pbuf_custom code is only needed for one specific configuration of IP_FRAG, unless required by external driver/application code. </p>
<p class="definition">Definition at line <a class="el" href="pbuf_8h_source.html#l00055">55</a> of file <a class="el" href="pbuf_8h_source.html">pbuf.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a1f31e5e7b39e90b9b52654f543bb8fc5">◆ </a></span>PBUF_CHECK_FREE_OOSEQ</h2>
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<td class="memname">#define PBUF_CHECK_FREE_OOSEQ</td>
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<p class="definition">Definition at line <a class="el" href="pbuf_8h_source.html#l00217">217</a> of file <a class="el" href="pbuf_8h_source.html">pbuf.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#af78a7e1815dc0e31884d095b666d997f">◆ </a></span>PBUF_FLAG_IS_CUSTOM</h2>
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<td class="memname">#define PBUF_FLAG_IS_CUSTOM   0x02U</td>
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<p>indicates this is a custom pbuf: pbuf_free calls pbuf_custom->custom_free_function() when the last reference is released (plus custom PBUF_RAM cannot be trimmed) </p>
<p class="definition">Definition at line <a class="el" href="pbuf_8h_source.html#l00131">131</a> of file <a class="el" href="pbuf_8h_source.html">pbuf.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a6772c16662bbb78597399add086500c0">◆ </a></span>PBUF_FLAG_LLBCAST</h2>
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<td class="memname">#define PBUF_FLAG_LLBCAST   0x08U</td>
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<p>indicates this pbuf was received as link-level broadcast </p>
<p class="definition">Definition at line <a class="el" href="pbuf_8h_source.html#l00135">135</a> of file <a class="el" href="pbuf_8h_source.html">pbuf.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ac0d56cde47aca24ef410d730d7c89887">◆ </a></span>PBUF_FLAG_LLMCAST</h2>
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<td class="memname">#define PBUF_FLAG_LLMCAST   0x10U</td>
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<p>indicates this pbuf was received as link-level multicast </p>
<p class="definition">Definition at line <a class="el" href="pbuf_8h_source.html#l00137">137</a> of file <a class="el" href="pbuf_8h_source.html">pbuf.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ab8ad153151a8c157335d9c0cedc007e6">◆ </a></span>PBUF_FLAG_MCASTLOOP</h2>
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<td class="memname">#define PBUF_FLAG_MCASTLOOP   0x04U</td>
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<p>indicates this pbuf is UDP multicast to be looped back </p>
<p class="definition">Definition at line <a class="el" href="pbuf_8h_source.html#l00133">133</a> of file <a class="el" href="pbuf_8h_source.html">pbuf.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a018a6499e357f8a1373321f802a82930">◆ </a></span>PBUF_FLAG_PUSH</h2>
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<td class="memname">#define PBUF_FLAG_PUSH   0x01U</td>
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<p>indicates this packet's data should be immediately passed to the application </p>
<p class="definition">Definition at line <a class="el" href="pbuf_8h_source.html#l00128">128</a> of file <a class="el" href="pbuf_8h_source.html">pbuf.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a36a915aa2f6a188baa2862881407971e">◆ </a></span>PBUF_FLAG_TCP_FIN</h2>
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<td class="memname">#define PBUF_FLAG_TCP_FIN   0x20U</td>
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<p>indicates this pbuf includes a TCP FIN flag </p>
<p class="definition">Definition at line <a class="el" href="pbuf_8h_source.html#l00139">139</a> of file <a class="el" href="pbuf_8h_source.html">pbuf.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a0c9b6a35471ebe1628ffe74bbc67f0b4">◆ </a></span>pbuf_init</h2>
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<td class="memname">#define pbuf_init</td>
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<p class="definition">Definition at line <a class="el" href="pbuf_8h_source.html#l00221">221</a> of file <a class="el" href="pbuf_8h_source.html">pbuf.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#aae0fea237167bb06ea4dc5333df5b0a7">◆ </a></span>PBUF_IP_HLEN</h2>
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<td class="memname">#define PBUF_IP_HLEN   20</td>
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<p class="definition">Definition at line <a class="el" href="pbuf_8h_source.html#l00065">65</a> of file <a class="el" href="pbuf_8h_source.html">pbuf.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ac54b0f161128a32c7419c33b893a5106">◆ </a></span>PBUF_POOL_FREE_OOSEQ</h2>
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<td class="memname">#define PBUF_POOL_FREE_OOSEQ   1</td>
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<p>Define this to 0 to prevent freeing ooseq pbufs when the PBUF_POOL is empty </p>
<p class="definition">Definition at line <a class="el" href="pbuf_8h_source.html#l00203">203</a> of file <a class="el" href="pbuf_8h_source.html">pbuf.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#af9da2e1ca60dc0c584938ccc5d662307">◆ </a></span>PBUF_TRANSPORT_HLEN</h2>
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<td class="memname">#define PBUF_TRANSPORT_HLEN   20</td>
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<p class="definition">Definition at line <a class="el" href="pbuf_8h_source.html#l00061">61</a> of file <a class="el" href="pbuf_8h_source.html">pbuf.h</a>.</p>
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<h2 class="groupheader">Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a5df7ac5ae59012fe9aeddba375a72190">◆ </a></span>pbuf_clen()</h2>
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<td class="memname"><a class="el" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> pbuf_clen </td>
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<td class="paramtype"><a class="el" href="cdefs_8h.html#a2c212835823e3c54a8ab6d95c652660e">const</a> struct <a class="el" href="structpbuf.html">pbuf</a> * </td>
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<p>Count number of pbufs in a chain</p>
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<dl class="section return"><dt>Returns</dt><dd>the number of pbufs in a chain </dd></dl>
<p class="definition">Definition at line <a class="el" href="pbuf_8c_source.html#l00801">801</a> of file <a class="el" href="pbuf_8c_source.html">pbuf.c</a>.</p>
<p class="reference">References <a class="el" href="pbuf_8h_source.html#l00144">pbuf::next</a>, and <a class="el" href="fat__string_8h_source.html#l00017">NULL</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#abf3d29c4f43986b4cb5eb314d5b9729d">◆ </a></span>pbuf_dechain()</h2>
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<td class="memname">struct <a class="el" href="structpbuf.html">pbuf</a>* pbuf_dechain </td>
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<p>Dechains the first pbuf from its succeeding pbufs in the chain.</p>
<p>Makes p->tot_len field equal to p->len. </p><dl class="params"><dt>Parameters</dt><dd>
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<dl class="section return"><dt>Returns</dt><dd>remainder of the pbuf chain, or NULL if it was de-allocated. </dd></dl>
<dl class="section note"><dt>Note</dt><dd>May not be called on a packet queue. </dd></dl>
<p class="definition">Definition at line <a class="el" href="pbuf_8c_source.html#l00900">900</a> of file <a class="el" href="pbuf_8c_source.html">pbuf.c</a>.</p>
<p class="reference">References <a class="el" href="pbuf_8h_source.html#l00159">pbuf::len</a>, <a class="el" href="debug_8h_source.html#l00116">LWIP_ASSERT</a>, <a class="el" href="debug_8h_source.html#l00083">LWIP_DBG_TRACE</a>, <a class="el" href="debug_8h_source.html#l00164">LWIP_DEBUGF</a>, <a class="el" href="pbuf_8h_source.html#l00144">pbuf::next</a>, <a class="el" href="fat__string_8h_source.html#l00017">NULL</a>, <a class="el" href="lwipopts_8h_source.html#l00435">PBUF_DEBUG</a>, <a class="el" href="pbuf_8c_source.html#l00715">pbuf_free()</a>, and <a class="el" href="pbuf_8h_source.html#l00156">pbuf::tot_len</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#aaa17c1951cf2d207b6adfd3947d91f00">◆ </a></span>pbuf_header()</h2>
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<td class="memname"><a class="el" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> pbuf_header </td>
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<td class="paramtype">struct <a class="el" href="structpbuf.html">pbuf</a> * </td>
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<td class="paramtype"><a class="el" href="group__compiler__abstraction.html#gacf46f4df0ebab84edebcb69967fdf86b">s16_t</a> </td>
<td class="paramname"><em>header_size_increment</em> </td>
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<p>Adjusts the payload pointer to hide or reveal headers in the payload.</p>
<p>Adjusts the ->payload pointer so that space for a header (dis)appears in the pbuf payload.</p>
<p>The ->payload, ->tot_len and ->len fields are adjusted.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>pbuf to change the header size. </td></tr>
<tr><td class="paramname">header_size_increment</td><td>Number of bytes to increment header size which increases the size of the pbuf. New space is on the front. (Using a negative value decreases the header size.) If hdr_size_inc is 0, this function does nothing and returns successful.</td></tr>
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<p>PBUF_ROM and PBUF_REF type buffers cannot have their sizes increased, so the call will fail. A check is made that the increase in header size does not move the payload pointer in front of the start of the buffer. </p><dl class="section return"><dt>Returns</dt><dd>non-zero on failure, zero on success. </dd></dl>
<p class="definition">Definition at line <a class="el" href="pbuf_8c_source.html#l00665">665</a> of file <a class="el" href="pbuf_8c_source.html">pbuf.c</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a27480c41c34021d4417691d327163626">◆ </a></span>pbuf_header_force()</h2>
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<td class="memname"><a class="el" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> pbuf_header_force </td>
<td>(</td>
<td class="paramtype">struct <a class="el" href="structpbuf.html">pbuf</a> * </td>
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<p>Same as pbuf_header but does not check if 'header_size > 0' is allowed. This is used internally only, to allow PBUF_REF for RX. </p>
<p class="definition">Definition at line <a class="el" href="pbuf_8c_source.html#l00675">675</a> of file <a class="el" href="pbuf_8c_source.html">pbuf.c</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a9ba3f7b705309ceadb147692fd5a1c7d">◆ </a></span>pbuf_strstr()</h2>
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<td class="memname"><a class="el" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> pbuf_strstr </td>
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<td class="paramtype"><a class="el" href="cdefs_8h.html#a2c212835823e3c54a8ab6d95c652660e">const</a> struct <a class="el" href="structpbuf.html">pbuf</a> * </td>
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<td class="paramtype"><a class="el" href="cdefs_8h.html#a2c212835823e3c54a8ab6d95c652660e">const</a> char * </td>
<td class="paramname"><em>substr</em> </td>
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<p>Find occurrence of substr with length substr_len in pbuf p, start at offset start_offset WARNING: in contrast to <a class="el" href="string_8h.html#adcec9a82a6a276e8edb0fd4fc26fe8f2">strstr()</a>, this one does not stop at the first \0 in the pbuf/source string!</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>pbuf to search, maximum length is 0xFFFE since 0xFFFF is used as return value 'not found' </td></tr>
<tr><td class="paramname">substr</td><td>string to search for in p, maximum length is 0xFFFE </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>0xFFFF if substr was not found in p or the index where it was found </dd></dl>
<p class="definition">Definition at line <a class="el" href="pbuf_8c_source.html#l01432">1432</a> of file <a class="el" href="pbuf_8c_source.html">pbuf.c</a>.</p>
<p class="reference">References <a class="el" href="fat__string_8h_source.html#l00017">NULL</a>, <a class="el" href="pbuf_8c_source.html#l01405">pbuf_memfind()</a>, <a class="el" href="strlen_8c_source.html#l00055">strlen()</a>, and <a class="el" href="pbuf_8h_source.html#l00156">pbuf::tot_len</a>.</p>
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