/*
 * netsniff-ng - the packet sniffing beast
 * Copyright 2012 Markus Amend <markus@netsniff-ng.org>, Deutsche Flugsicherung GmbH
 * Subject to the GPL, version 2.
 *
 * http://www.ieee802.org/1/pages/802.1ad.html
 */

#include <stdio.h>
#include <stdint.h>
#include <netinet/in.h>    /* for ntohs() */

#include "proto.h"
#include "protos.h"
#include "dissector_eth.h"
#include "built_in.h"
#include "pkt_buff.h"

struct QinQhdr {
	uint16_t TCI;
	uint16_t TPID;
} __packed;

static void QinQ_full(struct pkt_buff *pkt)
{
	uint16_t tci;
	struct QinQhdr *QinQ = (struct QinQhdr *) pkt_pull(pkt, sizeof(*QinQ));

	if (QinQ == NULL)
		return;

	tci = ntohs(QinQ->TCI);

	tprintf(" [ VLAN QinQ ");
	tprintf("Prio (%d), ", (tci & 0xE000) >> 13);
	tprintf("DEI (%d), ", (tci & 0x1000) >> 12);
	tprintf("ID (%d), ", (tci & 0x0FFF));
	tprintf("Proto (0x%.4x)", ntohs(QinQ->TPID));
	tprintf(" ]\n");

	pkt_set_proto(pkt, &eth_lay2, ntohs(QinQ->TPID));
}

static void QinQ_less(struct pkt_buff *pkt)
{
	uint16_t tci;
	struct QinQhdr *QinQ = (struct QinQhdr *) pkt_pull(pkt, sizeof(*QinQ));

	if (QinQ == NULL)
		return;

	tci = ntohs(QinQ->TCI);

	tprintf(" VLAN%d", (tci & 0x0FFF));

	pkt_set_proto(pkt, &eth_lay2, ntohs(QinQ->TPID));
}

struct protocol QinQ_ops = {
	.key = 0x88a8,
	.print_full = QinQ_full,
	.print_less = QinQ_less,
};
 value='switch'/></form></td></tr>
<tr><td class='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
<table class='tabs'><tr><td>
<a href='/cgit.cgi/linux/net-next.git/'>summary</a><a href='/cgit.cgi/linux/net-next.git/refs/?id=7d56f0facd6c1cb4ed2169bb8e65294bfd7783f8'>refs</a><a href='/cgit.cgi/linux/net-next.git/log/'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/?id=7d56f0facd6c1cb4ed2169bb8e65294bfd7783f8'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/?id=7d56f0facd6c1cb4ed2169bb8e65294bfd7783f8'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/?id=7d56f0facd6c1cb4ed2169bb8e65294bfd7783f8'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/'>
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<div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='7d56f0facd6c1cb4ed2169bb8e65294bfd7783f8'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Sanjeev &lt;ghane0@gmail.com&gt;</td><td class='right'>2016-12-01 23:36:00 +0800</td></tr>
<tr><th>committer</th><td>Jonathan Corbet &lt;corbet@lwn.net&gt;</td><td class='right'>2016-12-01 10:44:08 -0700</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=7d56f0facd6c1cb4ed2169bb8e65294bfd7783f8'>7d56f0facd6c1cb4ed2169bb8e65294bfd7783f8</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=7d56f0facd6c1cb4ed2169bb8e65294bfd7783f8'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=7d56f0facd6c1cb4ed2169bb8e65294bfd7783f8'>08e7a20ba55c7764b537527f21d94f7e2b624b93</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=2fc9254d0c473e26a668d8efc75dd71146a07852'>2fc9254d0c473e26a668d8efc75dd71146a07852</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=7d56f0facd6c1cb4ed2169bb8e65294bfd7783f8&amp;id2=2fc9254d0c473e26a668d8efc75dd71146a07852'>diff</a>)</td></tr></table>
<div class='commit-subject'>Doc: Correct typo, "Introdution" =&gt; "Introduction"</div><div class='commit-msg'>This corrects a set of spelling mistakes, probably from an
automated conversion.

Signed-off-by: Sanjeev Gupta &lt;ghane0@gmail.com&gt;
Signed-off-by: Jonathan Corbet &lt;corbet@lwn.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=7d56f0facd6c1cb4ed2169bb8e65294bfd7783f8'>Diffstat</a></div><table summary='diffstat' class='diffstat'>