/*
 * netsniff-ng - the packet sniffing beast
 * Copyright 2012 Markus Amend <markus@netsniff-ng.org>, Deutsche Flugsicherung GmbH
 * Subject to the GPL, version 2.
 *
 * http://tools.ietf.org/html/rfc3032
 */

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

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

struct mpls_uchdr {
	uint32_t mpls_uc_hdr;
} __packed;

static int mpls_uc_next_proto(struct pkt_buff *pkt)
{
	uint8_t proto;
	uint16_t key = 0;

	if (pkt_len(pkt))
		proto = *(pkt->data);
	else
		return -EIO;

	/* FIXME: Right now only test for IP Version field */
	switch (proto >> 4) {
	case 4:
		key = 0x0800; /* IPv4*/
		break;
	case 6:
		key = 0x86DD; /* IPv6*/
		break;
	default:
		/* Nothing detected ... */
		return -ENOENT;
	}

	return key;
}

static void mpls_uc_full(struct pkt_buff *pkt)
{
	int next;
	uint32_t mpls_uc_data;
	struct mpls_uchdr *mpls_uc;
	uint8_t s = 0;

	do {
		mpls_uc = (struct mpls_uchdr *) pkt_pull(pkt, sizeof(*mpls_uc));
		if (mpls_uc == NULL)
			return;

		mpls_uc_data = ntohl(mpls_uc->mpls_uc_hdr);
		s = (mpls_uc_data >> 8) & 0x1;

		tprintf(" [ MPLS ");
		tprintf("Label (%u), ", mpls_uc_data >> 12);
		tprintf("Exp (%u), ", (mpls_uc_data >> 9) & 0x7);
		tprintf("S (%u), ", s);
		tprintf("TTL (%u)", (mpls_uc_data & 0xFF));
		tprintf(" ]\n");
	} while (!s);

	next = mpls_uc_next_proto(pkt);
	if (next < 0)
		return;

	pkt_set_proto(pkt, &eth_lay2, (uint16_t) next);
}

static void mpls_uc_less(struct pkt_buff *pkt)
{
	int next;
	uint32_t mpls_uc_data;
	struct mpls_uchdr *mpls_uc;
	uint8_t s = 0;

	do {
		mpls_uc = (struct mpls_uchdr *) pkt_pull(pkt, sizeof(*mpls_uc));
		if (mpls_uc == NULL)
			return;

		mpls_uc_data = ntohl(mpls_uc->mpls_uc_hdr);
		s = (mpls_uc_data >> 8) & 0x1;

		tprintf(" MPLS/%u", mpls_uc_data >> 12);
	} while (!s);

	next = mpls_uc_next_proto(pkt);
	if (next < 0)
		return;

	pkt_set_proto(pkt, &eth_lay2, (uint16_t) next);
}

struct protocol mpls_uc_ops = {
	.key = 0x8847,
	.print_full = mpls_uc_full,
	.print_less = mpls_uc_less,
};
6577f974c9f0af77732f251a'/><select name='qt'>
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<div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='e0f41e52ddf5dc676577f974c9f0af77732f251a'/><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>Masahiro Yamada &lt;yamada.masahiro@socionext.com&gt;</td><td class='right'>2016-04-08 11:24:48 +0900</td></tr>
<tr><th>committer</th><td>Michal Marek &lt;mmarek@suse.com&gt;</td><td class='right'>2016-04-20 10:49:09 +0200</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=e0f41e52ddf5dc676577f974c9f0af77732f251a'>e0f41e52ddf5dc676577f974c9f0af77732f251a</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=e0f41e52ddf5dc676577f974c9f0af77732f251a'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=e0f41e52ddf5dc676577f974c9f0af77732f251a'>e0e4870b511fe23aa4524b3830c9ec7301053475</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=23d43848708afd7aa9a2c8516a3f269a3e71be4f'>23d43848708afd7aa9a2c8516a3f269a3e71be4f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=e0f41e52ddf5dc676577f974c9f0af77732f251a&amp;id2=23d43848708afd7aa9a2c8516a3f269a3e71be4f'>diff</a>)</td></tr></table>
<div class='commit-subject'>kbuild: rename cmd_as_s_S to cmd_cpp_s_S</div><div class='commit-msg'>This command just preprocesses .S files into .s files, so cmd_cpp_s_S
seems more suitable.

Signed-off-by: Masahiro Yamada &lt;yamada.masahiro@socionext.com&gt;
Signed-off-by: Michal Marek &lt;mmarek@suse.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=e0f41e52ddf5dc676577f974c9f0af77732f251a'>Diffstat</a></div><table summary='diffstat' class='diffstat'>