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<div id="projectname">libosmocore
 <span id="projectnumber">0.9.0</span>
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<div id="projectbrief">Osmocom core library</div>
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<a href="#nested-classes">Data Structures</a> |
<a href="#define-members">Macros</a> |
<a href="#func-members">Functions</a> </div>
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<div class="title">msgb.h File Reference<div class="ingroups"><a class="el" href="group__msgb.html">Message buffers</a></div></div> </div>
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<p>Osmocom message buffers The Osmocom message buffers are modelled after the 'struct skb' inside the Linux kernel network stack. As they exist in userspace, they are much simplified. However, terminology such as headroom, tailroom, push/pull/put etc. remains the same.
<a href="#details">More...</a></p>
<div class="textblock"><code>#include <stdint.h></code><br />
<code>#include <osmocom/core/linuxlist.h></code><br />
<code>#include <<a class="el" href="utils_8h_source.html">osmocom/core/utils.h</a>></code><br />
<code>#include <<a class="el" href="bits_8h_source.html">osmocom/core/bits.h</a>></code><br />
<code>#include <<a class="el" href="panic_8h_source.html">osmocom/core/panic.h</a>></code><br />
</div>
<p><a href="msgb_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="structmsgb.html">msgb</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Osmocom message buffer. <a href="structmsgb.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a>
Macros</h2></td></tr>
<tr class="memitem:ga8cf2c52f02bf6e832d7880282a435a5b"><td class="memItemLeft" align="right" valign="top">
#define </td><td class="memItemRight" valign="bottom"><b>MSGB_DEBUG</b></td></tr>
<tr class="separator:ga8cf2c52f02bf6e832d7880282a435a5b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaf2a76423d5e8b648c05a7696f9cf6ed3"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><b>MSGB_ABORT</b>(msg, fmt, args ...)</td></tr>
<tr class="separator:gaf2a76423d5e8b648c05a7696f9cf6ed3"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga5b0a3beb8ad95637539655d0bd2212e9"><td class="memItemLeft" align="right" valign="top">
#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#ga5b0a3beb8ad95637539655d0bd2212e9">msgb_l1</a>(m)   ((void *)(m->l1h))</td></tr>
<tr class="memdesc:ga5b0a3beb8ad95637539655d0bd2212e9"><td class="mdescLeft"> </td><td class="mdescRight">obtain L1 header of msgb <br /></td></tr>
<tr class="separator:ga5b0a3beb8ad95637539655d0bd2212e9"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaf159332606c2999a33ed73d9e874013c"><td class="memItemLeft" align="right" valign="top">
#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#gaf159332606c2999a33ed73d9e874013c">msgb_l2</a>(m)   ((void *)(m->l2h))</td></tr>
<tr class="memdesc:gaf159332606c2999a33ed73d9e874013c"><td class="mdescLeft"> </td><td class="mdescRight">obtain L2 header of msgb <br /></td></tr>
<tr class="separator:gaf159332606c2999a33ed73d9e874013c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gad9d9ef8e08a61b8d03226b1ba4a8fc99"><td class="memItemLeft" align="right" valign="top">
#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#gad9d9ef8e08a61b8d03226b1ba4a8fc99">msgb_l3</a>(m)   ((void *)(m->l3h))</td></tr>
<tr class="memdesc:gad9d9ef8e08a61b8d03226b1ba4a8fc99"><td class="mdescLeft"> </td><td class="mdescRight">obtain L3 header of msgb <br /></td></tr>
<tr class="separator:gad9d9ef8e08a61b8d03226b1ba4a8fc99"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga1394ee8d1bda46a881b3acaada40784d"><td class="memItemLeft" align="right" valign="top">
#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#ga1394ee8d1bda46a881b3acaada40784d">msgb_sms</a>(m)   ((void *)(m->l4h))</td></tr>
<tr class="memdesc:ga1394ee8d1bda46a881b3acaada40784d"><td class="mdescLeft"> </td><td class="mdescRight">obtain SMS header of msgb <br /></td></tr>
<tr class="separator:ga1394ee8d1bda46a881b3acaada40784d"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:ga25906d049cbad1bf2d5a785319268ea8"><td class="memItemLeft" align="right" valign="top">struct <a class="el" href="structmsgb.html">msgb</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#ga25906d049cbad1bf2d5a785319268ea8">msgb_alloc</a> (uint16_t size, const char *name)</td></tr>
<tr class="memdesc:ga25906d049cbad1bf2d5a785319268ea8"><td class="mdescLeft"> </td><td class="mdescRight">Allocate a new message buffer. <a href="group__msgb.html#ga25906d049cbad1bf2d5a785319268ea8">More...</a><br /></td></tr>
<tr class="separator:ga25906d049cbad1bf2d5a785319268ea8"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gae48b55f6f4529aafb069eaa3fa1998f0"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#gae48b55f6f4529aafb069eaa3fa1998f0">msgb_free</a> (struct <a class="el" href="structmsgb.html">msgb</a> *m)</td></tr>
<tr class="memdesc:gae48b55f6f4529aafb069eaa3fa1998f0"><td class="mdescLeft"> </td><td class="mdescRight">Release given message buffer. <a href="group__msgb.html#gae48b55f6f4529aafb069eaa3fa1998f0">More...</a><br /></td></tr>
<tr class="separator:gae48b55f6f4529aafb069eaa3fa1998f0"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gacb8dd9493eb7fc266ce159e3325c6504"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#gacb8dd9493eb7fc266ce159e3325c6504">msgb_enqueue</a> (struct <a class="el" href="structllist__head.html">llist_head</a> *queue, struct <a class="el" href="structmsgb.html">msgb</a> *msg)</td></tr>
<tr class="memdesc:gacb8dd9493eb7fc266ce159e3325c6504"><td class="mdescLeft"> </td><td class="mdescRight">Enqueue message buffer to tail of a queue. <a href="group__msgb.html#gacb8dd9493eb7fc266ce159e3325c6504">More...</a><br /></td></tr>
<tr class="separator:gacb8dd9493eb7fc266ce159e3325c6504"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gadf56eab1dbbb193b132c3dc6ba4222bc"><td class="memItemLeft" align="right" valign="top">struct <a class="el" href="structmsgb.html">msgb</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#gadf56eab1dbbb193b132c3dc6ba4222bc">msgb_dequeue</a> (struct <a class="el" href="structllist__head.html">llist_head</a> *queue)</td></tr>
<tr class="memdesc:gadf56eab1dbbb193b132c3dc6ba4222bc"><td class="mdescLeft"> </td><td class="mdescRight">Dequeue message buffer from head of queue. <a href="group__msgb.html#gadf56eab1dbbb193b132c3dc6ba4222bc">More...</a><br /></td></tr>
<tr class="separator:gadf56eab1dbbb193b132c3dc6ba4222bc"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga5676421c50ed5d0049b53605fc5397ce"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#ga5676421c50ed5d0049b53605fc5397ce">msgb_reset</a> (struct <a class="el" href="structmsgb.html">msgb</a> *msg)</td></tr>
<tr class="memdesc:ga5676421c50ed5d0049b53605fc5397ce"><td class="mdescLeft"> </td><td class="mdescRight">Re-set all message buffer pointers. <a href="group__msgb.html#ga5676421c50ed5d0049b53605fc5397ce">More...</a><br /></td></tr>
<tr class="separator:ga5676421c50ed5d0049b53605fc5397ce"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga036077cd924b90a798cb3b6c5541a492"><td class="memItemLeft" align="right" valign="top">uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#ga036077cd924b90a798cb3b6c5541a492">msgb_length</a> (const struct <a class="el" href="structmsgb.html">msgb</a> *msg)</td></tr>
<tr class="memdesc:ga036077cd924b90a798cb3b6c5541a492"><td class="mdescLeft"> </td><td class="mdescRight">get length of message buffer <a href="group__msgb.html#ga036077cd924b90a798cb3b6c5541a492">More...</a><br /></td></tr>
<tr class="separator:ga036077cd924b90a798cb3b6c5541a492"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga9a703fb35c8eafd88c6d0d20aef465ac"><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#ga9a703fb35c8eafd88c6d0d20aef465ac">msgb_hexdump</a> (const struct <a class="el" href="structmsgb.html">msgb</a> *msg)</td></tr>
<tr class="memdesc:ga9a703fb35c8eafd88c6d0d20aef465ac"><td class="mdescLeft"> </td><td class="mdescRight">Return a (static) buffer containing a hexdump of the msg. <a href="group__msgb.html#ga9a703fb35c8eafd88c6d0d20aef465ac">More...</a><br /></td></tr>
<tr class="separator:ga9a703fb35c8eafd88c6d0d20aef465ac"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga6c906f4c3afd52d2813a9c9a50acdf48"><td class="memItemLeft" align="right" valign="top">static unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#ga6c906f4c3afd52d2813a9c9a50acdf48">msgb_l1len</a> (const struct <a class="el" href="structmsgb.html">msgb</a> *<a class="el" href="structmsgb.html">msgb</a>)</td></tr>
<tr class="memdesc:ga6c906f4c3afd52d2813a9c9a50acdf48"><td class="mdescLeft"> </td><td class="mdescRight">determine length of L1 message <a href="group__msgb.html#ga6c906f4c3afd52d2813a9c9a50acdf48">More...</a><br /></td></tr>
<tr class="separator:ga6c906f4c3afd52d2813a9c9a50acdf48"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga62f1183fcbb03ae09b922a79b95528ab"><td class="memItemLeft" align="right" valign="top">static unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#ga62f1183fcbb03ae09b922a79b95528ab">msgb_l2len</a> (const struct <a class="el" href="structmsgb.html">msgb</a> *<a class="el" href="structmsgb.html">msgb</a>)</td></tr>
<tr class="memdesc:ga62f1183fcbb03ae09b922a79b95528ab"><td class="mdescLeft"> </td><td class="mdescRight">determine length of L2 message <a href="group__msgb.html#ga62f1183fcbb03ae09b922a79b95528ab">More...</a><br /></td></tr>
<tr class="separator:ga62f1183fcbb03ae09b922a79b95528ab"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga519e9198fe06b0ea67ada65e77c5d7b2"><td class="memItemLeft" align="right" valign="top">static unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#ga519e9198fe06b0ea67ada65e77c5d7b2">msgb_l3len</a> (const struct <a class="el" href="structmsgb.html">msgb</a> *<a class="el" href="structmsgb.html">msgb</a>)</td></tr>
<tr class="memdesc:ga519e9198fe06b0ea67ada65e77c5d7b2"><td class="mdescLeft"> </td><td class="mdescRight">determine length of L3 message <a href="group__msgb.html#ga519e9198fe06b0ea67ada65e77c5d7b2">More...</a><br /></td></tr>
<tr class="separator:ga519e9198fe06b0ea67ada65e77c5d7b2"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gae54ddbf27117a4cb1b750c6b113a0d0c"><td class="memItemLeft" align="right" valign="top">static unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#gae54ddbf27117a4cb1b750c6b113a0d0c">msgb_headlen</a> (const struct <a class="el" href="structmsgb.html">msgb</a> *<a class="el" href="structmsgb.html">msgb</a>)</td></tr>
<tr class="memdesc:gae54ddbf27117a4cb1b750c6b113a0d0c"><td class="mdescLeft"> </td><td class="mdescRight">determine the length of the header <a href="group__msgb.html#gae54ddbf27117a4cb1b750c6b113a0d0c">More...</a><br /></td></tr>
<tr class="separator:gae54ddbf27117a4cb1b750c6b113a0d0c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga14ba72cbede82dddeece5838969d064c"><td class="memItemLeft" align="right" valign="top">static int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#ga14ba72cbede82dddeece5838969d064c">msgb_tailroom</a> (const struct <a class="el" href="structmsgb.html">msgb</a> *<a class="el" href="structmsgb.html">msgb</a>)</td></tr>
<tr class="memdesc:ga14ba72cbede82dddeece5838969d064c"><td class="mdescLeft"> </td><td class="mdescRight">determine how much tail room is left in msgb <a href="group__msgb.html#ga14ba72cbede82dddeece5838969d064c">More...</a><br /></td></tr>
<tr class="separator:ga14ba72cbede82dddeece5838969d064c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaff7eae95ec007dd419dc60c03c3db5bd"><td class="memItemLeft" align="right" valign="top">static int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#gaff7eae95ec007dd419dc60c03c3db5bd">msgb_headroom</a> (const struct <a class="el" href="structmsgb.html">msgb</a> *<a class="el" href="structmsgb.html">msgb</a>)</td></tr>
<tr class="memdesc:gaff7eae95ec007dd419dc60c03c3db5bd"><td class="mdescLeft"> </td><td class="mdescRight">determine the amount of headroom in msgb <a href="group__msgb.html#gaff7eae95ec007dd419dc60c03c3db5bd">More...</a><br /></td></tr>
<tr class="separator:gaff7eae95ec007dd419dc60c03c3db5bd"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gab3d4e62c08a29ddb73c00eab4b3f2e91"><td class="memItemLeft" align="right" valign="top">static unsigned char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#gab3d4e62c08a29ddb73c00eab4b3f2e91">msgb_put</a> (struct <a class="el" href="structmsgb.html">msgb</a> *<a class="el" href="structmsgb.html">msgb</a>, unsigned int len)</td></tr>
<tr class="memdesc:gab3d4e62c08a29ddb73c00eab4b3f2e91"><td class="mdescLeft"> </td><td class="mdescRight">append data to end of message buffer <a href="group__msgb.html#gab3d4e62c08a29ddb73c00eab4b3f2e91">More...</a><br /></td></tr>
<tr class="separator:gab3d4e62c08a29ddb73c00eab4b3f2e91"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gabf3d11e3739218fe013956285819f772"><td class="memItemLeft" align="right" valign="top">static void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#gabf3d11e3739218fe013956285819f772">msgb_put_u8</a> (struct <a class="el" href="structmsgb.html">msgb</a> *<a class="el" href="structmsgb.html">msgb</a>, uint8_t word)</td></tr>
<tr class="memdesc:gabf3d11e3739218fe013956285819f772"><td class="mdescLeft"> </td><td class="mdescRight">append a uint8 value to the end of the message <a href="group__msgb.html#gabf3d11e3739218fe013956285819f772">More...</a><br /></td></tr>
<tr class="separator:gabf3d11e3739218fe013956285819f772"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga8c951f453a3d6dd6c800fc5d7480534c"><td class="memItemLeft" align="right" valign="top">static void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#ga8c951f453a3d6dd6c800fc5d7480534c">msgb_put_u16</a> (struct <a class="el" href="structmsgb.html">msgb</a> *<a class="el" href="structmsgb.html">msgb</a>, uint16_t word)</td></tr>
<tr class="memdesc:ga8c951f453a3d6dd6c800fc5d7480534c"><td class="mdescLeft"> </td><td class="mdescRight">append a uint16 value to the end of the message <a href="group__msgb.html#ga8c951f453a3d6dd6c800fc5d7480534c">More...</a><br /></td></tr>
<tr class="separator:ga8c951f453a3d6dd6c800fc5d7480534c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga2650307d02f185d8f6ac11b8de7738c6"><td class="memItemLeft" align="right" valign="top">static void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#ga2650307d02f185d8f6ac11b8de7738c6">msgb_put_u32</a> (struct <a class="el" href="structmsgb.html">msgb</a> *<a class="el" href="structmsgb.html">msgb</a>, uint32_t word)</td></tr>
<tr class="memdesc:ga2650307d02f185d8f6ac11b8de7738c6"><td class="mdescLeft"> </td><td class="mdescRight">append a uint32 value to the end of the message <a href="group__msgb.html#ga2650307d02f185d8f6ac11b8de7738c6">More...</a><br /></td></tr>
<tr class="separator:ga2650307d02f185d8f6ac11b8de7738c6"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaff0a8219014e7f55c1aec795dd9a00c9"><td class="memItemLeft" align="right" valign="top">static unsigned char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#gaff0a8219014e7f55c1aec795dd9a00c9">msgb_get</a> (struct <a class="el" href="structmsgb.html">msgb</a> *<a class="el" href="structmsgb.html">msgb</a>, unsigned int len)</td></tr>
<tr class="memdesc:gaff0a8219014e7f55c1aec795dd9a00c9"><td class="mdescLeft"> </td><td class="mdescRight">remove data from end of message <a href="group__msgb.html#gaff0a8219014e7f55c1aec795dd9a00c9">More...</a><br /></td></tr>
<tr class="separator:gaff0a8219014e7f55c1aec795dd9a00c9"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaa5b5674fbbe7b7206565f79dba2ca28f"><td class="memItemLeft" align="right" valign="top">static uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#gaa5b5674fbbe7b7206565f79dba2ca28f">msgb_get_u8</a> (struct <a class="el" href="structmsgb.html">msgb</a> *<a class="el" href="structmsgb.html">msgb</a>)</td></tr>
<tr class="memdesc:gaa5b5674fbbe7b7206565f79dba2ca28f"><td class="mdescLeft"> </td><td class="mdescRight">remove uint8 from end of message <a href="group__msgb.html#gaa5b5674fbbe7b7206565f79dba2ca28f">More...</a><br /></td></tr>
<tr class="separator:gaa5b5674fbbe7b7206565f79dba2ca28f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gad07b39cd3d4d0865b4139582eb458e00"><td class="memItemLeft" align="right" valign="top">static uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#gad07b39cd3d4d0865b4139582eb458e00">msgb_get_u16</a> (struct <a class="el" href="structmsgb.html">msgb</a> *<a class="el" href="structmsgb.html">msgb</a>)</td></tr>
<tr class="memdesc:gad07b39cd3d4d0865b4139582eb458e00"><td class="mdescLeft"> </td><td class="mdescRight">remove uint16 from end of message <a href="group__msgb.html#gad07b39cd3d4d0865b4139582eb458e00">More...</a><br /></td></tr>
<tr class="separator:gad07b39cd3d4d0865b4139582eb458e00"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga3a53a5bb768bc46ad048794d0bd8e061"><td class="memItemLeft" align="right" valign="top">static uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#ga3a53a5bb768bc46ad048794d0bd8e061">msgb_get_u32</a> (struct <a class="el" href="structmsgb.html">msgb</a> *<a class="el" href="structmsgb.html">msgb</a>)</td></tr>
<tr class="memdesc:ga3a53a5bb768bc46ad048794d0bd8e061"><td class="mdescLeft"> </td><td class="mdescRight">remove uint32 from end of message <a href="group__msgb.html#ga3a53a5bb768bc46ad048794d0bd8e061">More...</a><br /></td></tr>
<tr class="separator:ga3a53a5bb768bc46ad048794d0bd8e061"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga57aa757d6be7e0d7d16f04f0bea0dd8c"><td class="memItemLeft" align="right" valign="top">static unsigned char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#ga57aa757d6be7e0d7d16f04f0bea0dd8c">msgb_push</a> (struct <a class="el" href="structmsgb.html">msgb</a> *<a class="el" href="structmsgb.html">msgb</a>, unsigned int len)</td></tr>
<tr class="memdesc:ga57aa757d6be7e0d7d16f04f0bea0dd8c"><td class="mdescLeft"> </td><td class="mdescRight">prepend (push) some data to start of message <a href="group__msgb.html#ga57aa757d6be7e0d7d16f04f0bea0dd8c">More...</a><br /></td></tr>
<tr class="separator:ga57aa757d6be7e0d7d16f04f0bea0dd8c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga39f61ddcffeb467861c447169edd9999"><td class="memItemLeft" align="right" valign="top">static unsigned char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#ga39f61ddcffeb467861c447169edd9999">msgb_pull</a> (struct <a class="el" href="structmsgb.html">msgb</a> *<a class="el" href="structmsgb.html">msgb</a>, unsigned int len)</td></tr>
<tr class="memdesc:ga39f61ddcffeb467861c447169edd9999"><td class="mdescLeft"> </td><td class="mdescRight">remove (pull) a header from the front of the message buffer <a href="group__msgb.html#ga39f61ddcffeb467861c447169edd9999">More...</a><br /></td></tr>
<tr class="separator:ga39f61ddcffeb467861c447169edd9999"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga88912348df874ec6bb89be7238b98cd7"><td class="memItemLeft" align="right" valign="top">static unsigned char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#ga88912348df874ec6bb89be7238b98cd7">msgb_pull_to_l3</a> (struct <a class="el" href="structmsgb.html">msgb</a> *msg)</td></tr>
<tr class="memdesc:ga88912348df874ec6bb89be7238b98cd7"><td class="mdescLeft"> </td><td class="mdescRight">remove (pull) all headers in front of l3h from the message buffer. <a href="group__msgb.html#ga88912348df874ec6bb89be7238b98cd7">More...</a><br /></td></tr>
<tr class="separator:ga88912348df874ec6bb89be7238b98cd7"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga0d66ac4622d966dfd30ce3ced46f7bff"><td class="memItemLeft" align="right" valign="top">static uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#ga0d66ac4622d966dfd30ce3ced46f7bff">msgb_pull_u8</a> (struct <a class="el" href="structmsgb.html">msgb</a> *<a class="el" href="structmsgb.html">msgb</a>)</td></tr>
<tr class="memdesc:ga0d66ac4622d966dfd30ce3ced46f7bff"><td class="mdescLeft"> </td><td class="mdescRight">remove uint8 from front of message <a href="group__msgb.html#ga0d66ac4622d966dfd30ce3ced46f7bff">More...</a><br /></td></tr>
<tr class="separator:ga0d66ac4622d966dfd30ce3ced46f7bff"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga2e2c2eb7ddf48d24cd78f95151537a73"><td class="memItemLeft" align="right" valign="top">static uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#ga2e2c2eb7ddf48d24cd78f95151537a73">msgb_pull_u16</a> (struct <a class="el" href="structmsgb.html">msgb</a> *<a class="el" href="structmsgb.html">msgb</a>)</td></tr>
<tr class="memdesc:ga2e2c2eb7ddf48d24cd78f95151537a73"><td class="mdescLeft"> </td><td class="mdescRight">remove uint16 from front of message <a href="group__msgb.html#ga2e2c2eb7ddf48d24cd78f95151537a73">More...</a><br /></td></tr>
<tr class="separator:ga2e2c2eb7ddf48d24cd78f95151537a73"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga68f43d95ab0571e207ccc679c426bbbe"><td class="memItemLeft" align="right" valign="top">static uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#ga68f43d95ab0571e207ccc679c426bbbe">msgb_pull_u32</a> (struct <a class="el" href="structmsgb.html">msgb</a> *<a class="el" href="structmsgb.html">msgb</a>)</td></tr>
<tr class="memdesc:ga68f43d95ab0571e207ccc679c426bbbe"><td class="mdescLeft"> </td><td class="mdescRight">remove uint32 from front of message <a href="group__msgb.html#ga68f43d95ab0571e207ccc679c426bbbe">More...</a><br /></td></tr>
<tr class="separator:ga68f43d95ab0571e207ccc679c426bbbe"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gad73da5b3dce61877ad745d5e25ea44d5"><td class="memItemLeft" align="right" valign="top">static void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#gad73da5b3dce61877ad745d5e25ea44d5">msgb_reserve</a> (struct <a class="el" href="structmsgb.html">msgb</a> *msg, int len)</td></tr>
<tr class="memdesc:gad73da5b3dce61877ad745d5e25ea44d5"><td class="mdescLeft"> </td><td class="mdescRight">Increase headroom of empty msgb, reducing the tailroom. <a href="group__msgb.html#gad73da5b3dce61877ad745d5e25ea44d5">More...</a><br /></td></tr>
<tr class="separator:gad73da5b3dce61877ad745d5e25ea44d5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga9c64d044b82dc23de865fadc8533249e"><td class="memItemLeft" align="right" valign="top">static int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#ga9c64d044b82dc23de865fadc8533249e">msgb_trim</a> (struct <a class="el" href="structmsgb.html">msgb</a> *msg, int len)</td></tr>
<tr class="memdesc:ga9c64d044b82dc23de865fadc8533249e"><td class="mdescLeft"> </td><td class="mdescRight">Trim the msgb to a given absolute length. <a href="group__msgb.html#ga9c64d044b82dc23de865fadc8533249e">More...</a><br /></td></tr>
<tr class="separator:ga9c64d044b82dc23de865fadc8533249e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gadcf2bccabb0370141eebdc32aca77d30"><td class="memItemLeft" align="right" valign="top">static int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#gadcf2bccabb0370141eebdc32aca77d30">msgb_l3trim</a> (struct <a class="el" href="structmsgb.html">msgb</a> *msg, int l3len)</td></tr>
<tr class="memdesc:gadcf2bccabb0370141eebdc32aca77d30"><td class="mdescLeft"> </td><td class="mdescRight">Trim the msgb to a given layer3 length. <a href="group__msgb.html#gadcf2bccabb0370141eebdc32aca77d30">More...</a><br /></td></tr>
<tr class="separator:gadcf2bccabb0370141eebdc32aca77d30"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaa9e542be4e4aa533d02dbe213beb516a"><td class="memItemLeft" align="right" valign="top">static struct <a class="el" href="structmsgb.html">msgb</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#gaa9e542be4e4aa533d02dbe213beb516a">msgb_alloc_headroom</a> (int size, int headroom, const char *name)</td></tr>
<tr class="memdesc:gaa9e542be4e4aa533d02dbe213beb516a"><td class="mdescLeft"> </td><td class="mdescRight">Allocate message buffer with specified headroom. <a href="group__msgb.html#gaa9e542be4e4aa533d02dbe213beb516a">More...</a><br /></td></tr>
<tr class="separator:gaa9e542be4e4aa533d02dbe213beb516a"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga9bed2fe8aedfa7619eda155a4afbaf9a"><td class="memItemLeft" align="right" valign="top">uint8_t * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#ga9bed2fe8aedfa7619eda155a4afbaf9a">msgb_data</a> (const struct <a class="el" href="structmsgb.html">msgb</a> *msg)</td></tr>
<tr class="memdesc:ga9bed2fe8aedfa7619eda155a4afbaf9a"><td class="mdescLeft"> </td><td class="mdescRight">get pointer to data section of message buffer <a href="group__msgb.html#ga9bed2fe8aedfa7619eda155a4afbaf9a">More...</a><br /></td></tr>
<tr class="separator:ga9bed2fe8aedfa7619eda155a4afbaf9a"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga1d57bb92a849857deb6871446d3230da"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__msgb.html#ga1d57bb92a849857deb6871446d3230da">msgb_set_talloc_ctx</a> (void *ctx)</td></tr>
<tr class="memdesc:ga1d57bb92a849857deb6871446d3230da"><td class="mdescLeft"> </td><td class="mdescRight">Set the talloc context for <a class="el" href="group__msgb.html#ga25906d049cbad1bf2d5a785319268ea8">msgb_alloc</a>. <a href="group__msgb.html#ga1d57bb92a849857deb6871446d3230da">More...</a><br /></td></tr>
<tr class="separator:ga1d57bb92a849857deb6871446d3230da"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Osmocom message buffers The Osmocom message buffers are modelled after the 'struct skb' inside the Linux kernel network stack. As they exist in userspace, they are much simplified. However, terminology such as headroom, tailroom, push/pull/put etc. remains the same. </p>
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