/*
 * netsniff-ng - the packet sniffing beast
 * Copyright 2012 Markus Amend <markus@netsniff-ng.org>, Deutsche Flugsicherung GmbH
 * Subject to the GPL, version 2.
 *
 * IPv6 Fragmentation Header described in RFC2460
 */

#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 fragmhdr {
	uint8_t h_fragm_next_header;
	uint8_t h_fragm_reserved;
	uint16_t h_fragm_off_res_M;	
	uint32_t h_fragm_identification;
} __packed;

static void fragm(struct pkt_buff *pkt)
{
	uint16_t off_res_M;
	struct fragmhdr *fragm_ops;

	fragm_ops = (struct fragmhdr *) pkt_pull(pkt, sizeof(*fragm_ops));
	if (fragm_ops == NULL)
		return;

	off_res_M = ntohs(fragm_ops->h_fragm_off_res_M);
	
	tprintf("\t [ Fragment ");
	tprintf("NextHdr (%u), ", fragm_ops->h_fragm_next_header);
	tprintf("Reserved (%u), ", fragm_ops->h_fragm_reserved);
	tprintf("Offset (%u), ", off_res_M >> 3);
	tprintf("Res (%u), ", (off_res_M >> 1) & 0x3);
	tprintf("M flag (%u), ", off_res_M & 0x1);
	tprintf("Identification (%u)",
		ntohl(fragm_ops->h_fragm_identification));
	tprintf(" ]\n");

	pkt_set_proto(pkt, &eth_lay3, fragm_ops->h_fragm_next_header);
}

static void fragm_less(struct pkt_buff *pkt)
{
	uint16_t off_res_M;
	struct fragmhdr *fragm_ops;

	fragm_ops = (struct fragmhdr *) pkt_pull(pkt, sizeof(*fragm_ops));
	if (fragm_ops == NULL)
		return;

	off_res_M = ntohs(fragm_ops->h_fragm_off_res_M);

	tprintf(" FragmOffs %u", off_res_M >> 3);

	pkt_set_proto(pkt, &eth_lay3, fragm_ops->h_fragm_next_header);
}

struct protocol ipv6_fragm_ops = {
	.key = 0x2C,
	.print_full = fragm,
	.print_less = fragm_less,
};
inux/net-next.git/refs/?h=nds-private-remove&amp;id=10ecc728fe12dbd206e2d4d8b6e96082632b969c'>refs</a><a href='/cgit.cgi/linux/net-next.git/log/tools/testing/selftests?h=nds-private-remove'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/tools/testing/selftests?h=nds-private-remove&amp;id=10ecc728fe12dbd206e2d4d8b6e96082632b969c'>tree</a><a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests?h=nds-private-remove&amp;id=10ecc728fe12dbd206e2d4d8b6e96082632b969c'>commit</a><a class='active' href='/cgit.cgi/linux/net-next.git/diff/tools/testing/selftests?h=nds-private-remove&amp;id=10ecc728fe12dbd206e2d4d8b6e96082632b969c&amp;id2=2ee89fb9a942e250b5adb5535de4acca14bb7fa2'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/tools/testing/selftests'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=10ecc728fe12dbd206e2d4d8b6e96082632b969c&amp;id2=2ee89fb9a942e250b5adb5535de4acca14bb7fa2'>root</a>/<a href='/cgit.cgi/linux/net-next.git/diff/tools?h=nds-private-remove&amp;id=10ecc728fe12dbd206e2d4d8b6e96082632b969c&amp;id2=2ee89fb9a942e250b5adb5535de4acca14bb7fa2'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/diff/tools/testing?h=nds-private-remove&amp;id=10ecc728fe12dbd206e2d4d8b6e96082632b969c&amp;id2=2ee89fb9a942e250b5adb5535de4acca14bb7fa2'>testing</a>/<a href='/cgit.cgi/linux/net-next.git/diff/tools/testing/selftests?h=nds-private-remove&amp;id=10ecc728fe12dbd206e2d4d8b6e96082632b969c&amp;id2=2ee89fb9a942e250b5adb5535de4acca14bb7fa2'>selftests</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='10ecc728fe12dbd206e2d4d8b6e96082632b969c'/><input type='hidden' name='id2' value='2ee89fb9a942e250b5adb5535de4acca14bb7fa2'/><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><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=10ecc728fe12dbd206e2d4d8b6e96082632b969c&amp;id2=2ee89fb9a942e250b5adb5535de4acca14bb7fa2'>Diffstat</a> (limited to 'tools/testing/selftests')</div><table summary='diffstat' class='diffstat'><tr><td class='mode'>-rw-r--r--</td><td class='upd'><a href='/cgit.cgi/linux/net-next.git/diff/tools/testing/selftests/bpf/bpf_sys.h?h=nds-private-remove&amp;id=10ecc728fe12dbd206e2d4d8b6e96082632b969c&amp;id2=2ee89fb9a942e250b5adb5535de4acca14bb7fa2'>tools/testing/selftests/bpf/bpf_sys.h</a></td><td class='right'>13</td><td class='graph'><table summary='file diffstat' width='97%'><tr><td class='add' style='width: 0.0%;'/><td class='rem' style='width: 13.4%;'/><td class='none' style='width: 86.6%;'/></tr></table></td></tr>
<tr><td class='mode'>-rw-r--r--</td><td class='upd'><a href='/cgit.cgi/linux/net-next.git/diff/tools/testing/selftests/bpf/test_lpm_map.c?h=nds-private-remove&amp;id=10ecc728fe12dbd206e2d4d8b6e96082632b969c&amp;id2=2ee89fb9a942e250b5adb5535de4acca14bb7fa2'>tools/testing/selftests/bpf/test_lpm_map.c</a></td><td class='right'>15</td><td class='graph'><table summary='file diffstat' width='97%'><tr><td class='add' style='width: 8.2%;'/><td class='rem' style='width: 7.2%;'/><td class='none' style='width: 84.5%;'/></tr></table></td></tr>
<tr><td class='mode'>-rw-r--r--</td><td class='upd'><a href='/cgit.cgi/linux/net-next.git/diff/tools/testing/selftests/bpf/test_lru_map.c?h=nds-private-remove&amp;id=10ecc728fe12dbd206e2d4d8b6e96082632b969c&amp;id2=2ee89fb9a942e250b5adb5535de4acca14bb7fa2'>tools/testing/selftests/bpf/test_lru_map.c</a></td><td class='right'>97</td><td class='graph'><table summary='file diffstat' width='97%'><tr><td class='add' style='width: 57.7%;'/><td class='rem' style='width: 42.3%;'/><td class='none' style='width: 0.0%;'/></tr></table></td></tr>
<tr><td class='mode'>-rw-r--r--</td><td class='upd'><a href='/cgit.cgi/linux/net-next.git/diff/tools/testing/selftests/bpf/test_maps.c?h=nds-private-remove&amp;id=10ecc728fe12dbd206e2d4d8b6e96082632b969c&amp;id2=2ee89fb9a942e250b5adb5535de4acca14bb7fa2'>tools/testing/selftests/bpf/test_maps.c</a></td><td class='right'>61</td><td class='graph'><table summary='file diffstat' width='97%'><tr><td class='add' style='width: 34.0%;'/><td class='rem' style='width: 28.9%;'/><td class='none' style='width: 37.1%;'/></tr></table></td></tr>
</table><div class='diffstat-summary'>4 files changed, 97 insertions, 89 deletions</div><table summary='diff' class='diff'><tr><td><div class='head'>diff --git a/tools/testing/selftests/bpf/bpf_sys.h b/tools/testing/selftests/bpf/bpf_sys.h