/*
 * netsniff-ng - the packet sniffing beast
 * Copyright 2009, 2010 Daniel Borkmann.
 * Subject to the GPL, version 2.
 */

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

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

struct icmphdr {
	uint8_t type;
	uint8_t code;
	uint16_t checksum;
	union {
		struct {
			uint16_t id;
			uint16_t sequence;
		} echo;
		uint32_t gateway;
		struct {
			uint16_t ____unused;
			uint16_t mtu;
		} frag;
	} un;
} __packed;

static void icmp(struct pkt_buff *pkt)
{
	struct icmphdr *icmp = (struct icmphdr *) pkt_pull(pkt, sizeof(*icmp));
	uint16_t csum;

	if (icmp == NULL)
		return;

	csum = calc_csum(icmp, pkt_len(pkt) + sizeof(*icmp), 0);

	tprintf(" [ ICMP ");
	tprintf("Type (%u), ", icmp->type);
	tprintf("Code (%u), ", icmp->code);
	tprintf("CSum (0x%.4x) is %s", ntohs(icmp->checksum),
		csum ? colorize_start_full(black, red) "bogus (!)"
		       colorize_end() : "ok");
	tprintf(" ]\n");
}

static void icmp_less(struct pkt_buff *pkt)
{
	struct icmphdr *icmp = (struct icmphdr *) pkt_pull(pkt, sizeof(*icmp));

	if (icmp == NULL)
		return;

	tprintf(" Type %u Code %u", icmp->type, icmp->code);
}

struct protocol icmpv4_ops = {
	.key = 0x01,
	.print_full = icmp,
	.print_less = icmp_less,
};
h'/></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=7fe654dca20892f37226c31bdd2d5b932f8d843a'>refs</a><a href='/cgit.cgi/linux/net-next.git/log/'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/?id=7fe654dca20892f37226c31bdd2d5b932f8d843a'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/?id=7fe654dca20892f37226c31bdd2d5b932f8d843a'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/?id=7fe654dca20892f37226c31bdd2d5b932f8d843a'>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='7fe654dca20892f37226c31bdd2d5b932f8d843a'/><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>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-02-10 14:23:45 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-02-10 14:23:45 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=7fe654dca20892f37226c31bdd2d5b932f8d843a'>7fe654dca20892f37226c31bdd2d5b932f8d843a</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=7fe654dca20892f37226c31bdd2d5b932f8d843a'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=7fe654dca20892f37226c31bdd2d5b932f8d843a'>0a7d3c1e4eff0a0194fc265efae10ad1cbd2e0c5</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=3ebc7033168d43d12e4941f48a6f257d3f1ea1b5'>3ebc7033168d43d12e4941f48a6f257d3f1ea1b5</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=7fe654dca20892f37226c31bdd2d5b932f8d843a&amp;id2=3ebc7033168d43d12e4941f48a6f257d3f1ea1b5'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=0839ffb83e44e5ff1843e932592525fc2bff23ff'>0839ffb83e44e5ff1843e932592525fc2bff23ff</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=7fe654dca20892f37226c31bdd2d5b932f8d843a&amp;id2=0839ffb83e44e5ff1843e932592525fc2bff23ff'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'nfsd-4.10-3' of git://linux-nfs.org/~bfields/linux</div><div class='commit-msg'>Pull nfsd revert from Bruce Fields:
 "This patch turned out to have a couple problems. The problems are
  fixable, but at least one of the fixes is a little ugly. The original
  bug has always been there, so we can wait another week or two to get
  this right"

* tag 'nfsd-4.10-3' of git://linux-nfs.org/~bfields/linux:
  nfsd: Revert "nfsd: special case truncates some more"
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=7fe654dca20892f37226c31bdd2d5b932f8d843a'>Diffstat</a></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/fs/nfsd/vfs.c?id=7fe654dca20892f37226c31bdd2d5b932f8d843a'>fs/nfsd/vfs.c</a></td><td class='right'>97</td><td class='graph'><table summary='file diffstat' width='97%'><tr><td class='add' style='width: 61.9%;'/><td class='rem' style='width: 38.1%;'/><td class='none' style='width: 0.0%;'/></tr></table></td></tr>
</table><div class='diffstat-summary'>1 files changed, 60 insertions, 37 deletions</div><table summary='diff' class='diff'><tr><td><div class='head'>diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c