/*
 * 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 "lookup.h"
#include "pkt_buff.h"

struct udphdr {
	uint16_t source;
	uint16_t dest;
	uint16_t len;
	uint16_t check;
} __packed;

static void udp(struct pkt_buff *pkt)
{
	struct udphdr *udp = (struct udphdr *) pkt_pull(pkt, sizeof(*udp));
	ssize_t len;
	uint16_t src, dest;
	const char *src_name, *dest_name;

	if (udp == NULL)
		return;

	len = ntohs(udp->len) - sizeof(*udp);
	src = ntohs(udp->source);
	dest = ntohs(udp->dest);

	src_name = lookup_port_udp(src);
	dest_name = lookup_port_udp(dest);

	tprintf(" [ UDP ");
	tprintf("Port (%u", src);
	if (src_name)
		tprintf(" (%s%s%s)", colorize_start(bold), src_name,
			colorize_end());
	tprintf(" => %u", dest);
	if (dest_name)
		tprintf(" (%s%s%s)", colorize_start(bold), dest_name,
			colorize_end());
	tprintf("), ");
	if(len > pkt_len(pkt) || len < 0){
		tprintf("Len (%u) %s, ", ntohs(udp->len),
			colorize_start_full(black, red)
			"invalid" colorize_end());
	}
	tprintf("Len (%u Bytes, %zd Bytes Data), ", ntohs(udp->len), len);
	tprintf("CSum (0x%.4x)", ntohs(udp->check));
	tprintf(" ]\n");
}

static void udp_less(struct pkt_buff *pkt)
{
	struct udphdr *udp = (struct udphdr *) pkt_pull(pkt, sizeof(*udp));
	uint16_t src, dest;
	const char *src_name, *dest_name;

	if (udp == NULL)
		return;

	src = ntohs(udp->source);
	dest = ntohs(udp->dest);

	src_name = lookup_port_udp(src);
	dest_name = lookup_port_udp(dest);

	tprintf(" UDP %u", src);
	if(src_name)
		tprintf("(%s%s%s)", colorize_start(bold), src_name,
			colorize_end());
	tprintf("/%u", dest);
	if (dest_name)
		tprintf("(%s%s%s)", colorize_start(bold), dest_name,
			colorize_end());
}

struct protocol udp_ops = {
	.key = 0x11,
	.print_full = udp,
	.print_less = udp_less,
};
t</a><a href='/cgit.cgi/linux/net-next.git/diff/lib/kobject.c?id=c25d1dfbd403209025df41a737f82ce8f43d93f5'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/lib/kobject.c'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=c25d1dfbd403209025df41a737f82ce8f43d93f5'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/lib?id=c25d1dfbd403209025df41a737f82ce8f43d93f5'>lib</a>/<a href='/cgit.cgi/linux/net-next.git/commit/lib/kobject.c?id=c25d1dfbd403209025df41a737f82ce8f43d93f5'>kobject.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='c25d1dfbd403209025df41a737f82ce8f43d93f5'/><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>Robin Holt &lt;holt@sgi.com&gt;</td><td class='right'>2010-09-29 14:00:54 -0500</td></tr>
<tr><th>committer</th><td>Greg Kroah-Hartman &lt;gregkh@suse.de&gt;</td><td class='right'>2010-10-22 10:16:44 -0700</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/lib/kobject.c?id=c25d1dfbd403209025df41a737f82ce8f43d93f5'>c25d1dfbd403209025df41a737f82ce8f43d93f5</a> (<a href='/cgit.cgi/linux/net-next.git/patch/lib/kobject.c?id=c25d1dfbd403209025df41a737f82ce8f43d93f5'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=c25d1dfbd403209025df41a737f82ce8f43d93f5'>35110a432101ff146bae3656137d9ba6f37b38fd</a> /<a href='/cgit.cgi/linux/net-next.git/tree/lib/kobject.c?id=c25d1dfbd403209025df41a737f82ce8f43d93f5'>lib/kobject.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/lib/kobject.c?id=ead454feb6cbfe0fa6a1eeb30aa9abc338dacf62'>ead454feb6cbfe0fa6a1eeb30aa9abc338dacf62</a> (<a href='/cgit.cgi/linux/net-next.git/diff/lib/kobject.c?id=c25d1dfbd403209025df41a737f82ce8f43d93f5&amp;id2=ead454feb6cbfe0fa6a1eeb30aa9abc338dacf62'>diff</a>)</td></tr></table>
<div class='commit-subject'>kobject: Introduce kset_find_obj_hinted.</div><div class='commit-msg'>One call chain getting to kset_find_obj is:
  link_mem_sections()
    find_mem_section()
      kset_find_obj()

This is done during boot.  The memory sections were added in a linearly
increasing order and link_mem_sections tends to utilize them in that
same linear order.

Introduce a kset_find_obj_hinted which is passed the result of the
previous kset_find_obj which it uses for a quick "is the next object
our desired object" check before falling back to the old behavior.

Signed-off-by: Robin Holt &lt;holt@sgi.com&gt;
To: Robert P. J. Day &lt;rpjday@crashcourse.ca&gt;
Reviewed-by: KAMEZAWA Hiroyuki &lt;kamezawa.hiroyu@jp.fujitsu.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;

</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=c25d1dfbd403209025df41a737f82ce8f43d93f5'>Diffstat</a> (limited to 'lib/kobject.c')</div><table summary='diffstat' class='diffstat'>