/*
 * netsniff-ng - the packet sniffing beast
 * Copyright 2009 - 2013 Daniel Borkmann.
 * Subject to the GPL, version 2.
 */

#include <stdint.h>
#include <stdbool.h>

#include "hash.h"
#include "xmalloc.h"
#include "oui.h"
#include "str.h"

static struct hash_table oui;

static bool initialized = false;

struct vendor_id {
	unsigned int id;
	char *vendor;
	struct vendor_id *next;
};

const char *lookup_vendor(unsigned int id)
{
	struct vendor_id *v;

	v = lookup_hash(id, &oui);
	while (v && id != v->id)
		v = v->next;

	return (v && id == v->id ? v->vendor : NULL);
}

void dissector_init_oui(void)
{
	FILE *fp;
	char buff[128], *ptr, *end;
	struct vendor_id *v;
	void **pos;

	if (initialized)
		return;

	fp = fopen(ETCDIRE_STRING "/oui.conf", "r");
	if (!fp)
		panic("No oui.conf found!\n");

	memset(buff, 0, sizeof(buff));

	while (fgets(buff, sizeof(buff), fp) != NULL) {
		buff[sizeof(buff) - 1] = 0;
		ptr = buff;

		v = xmalloc(sizeof(*v));
		v->id = strtol(ptr, &end, 0);
		/* not a valid line, skip */
		if (v->id == 0 && end == ptr) {
			xfree(v);
			continue;
		}

		ptr = strstr(buff, ", ");
		/* likewise */
		if (!ptr) {
			xfree(v);
			continue;
		}

		ptr += strlen(", ");
		ptr = strtrim_right(ptr, '\n');
		ptr = strtrim_right(ptr, ' ');

		v->vendor = xstrdup(ptr);
		v->next = NULL;

		pos = insert_hash(v->id, v, &oui);
		if (pos) {
			v->next = *pos;
			*pos = v;
		}

		memset(buff, 0, sizeof(buff));
	}

	fclose(fp);
	initialized = true;
}

static int dissector_cleanup_oui_hash(void *ptr)
{
	struct vendor_id *tmp, *v = ptr;

	if (!ptr)
		return 0;

	while ((tmp = v->next)) {
		xfree(v->vendor);
		xfree(v);
		v = tmp;
	}

	xfree(v->vendor);
	xfree(v);

	return 0;
}

void dissector_cleanup_oui(void)
{
	if (!initialized)
		return;

	for_each_hash(&oui, dissector_cleanup_oui_hash);
	free_hash(&oui);
	initialized = false;
}
t/tree/?h=nds-private-remove&amp;id=fb754f958f8e46202c1efd7f66d5b3db1208117d'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=fb754f958f8e46202c1efd7f66d5b3db1208117d'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=fb754f958f8e46202c1efd7f66d5b3db1208117d'>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='h' value='nds-private-remove'/><input type='hidden' name='id' value='fb754f958f8e46202c1efd7f66d5b3db1208117d'/><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>Thomas Garnier &lt;thgarnie@google.com&gt;</td><td class='right'>2016-08-09 10:11:05 -0700</td></tr>
<tr><th>committer</th><td>Ingo Molnar &lt;mingo@kernel.org&gt;</td><td class='right'>2016-08-10 14:45:19 +0200</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=fb754f958f8e46202c1efd7f66d5b3db1208117d'>fb754f958f8e46202c1efd7f66d5b3db1208117d</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=fb754f958f8e46202c1efd7f66d5b3db1208117d'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=fb754f958f8e46202c1efd7f66d5b3db1208117d'>d3464916feec6cc38eeecaf50008f302658db00b</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=c7d2361f7524f365c1ae42f47880e3fa9efb2c2a'>c7d2361f7524f365c1ae42f47880e3fa9efb2c2a</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=fb754f958f8e46202c1efd7f66d5b3db1208117d&amp;id2=c7d2361f7524f365c1ae42f47880e3fa9efb2c2a'>diff</a>)</td></tr></table>
<div class='commit-subject'>x86/mm/KASLR: Increase BRK pages for KASLR memory randomization</div><div class='commit-msg'>Default implementation expects 6 pages maximum are needed for low page
allocations. If KASLR memory randomization is enabled, the worse case
of e820 layout would require 12 pages (no large pages). It is due to the
PUD level randomization and the variable e820 memory layout.

This bug was found while doing extensive testing of KASLR memory
randomization on different type of hardware.

Signed-off-by: Thomas Garnier &lt;thgarnie@google.com&gt;
Cc: Aleksey Makarov &lt;aleksey.makarov@linaro.org&gt;
Cc: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Cc: Andy Lutomirski &lt;luto@kernel.org&gt;
Cc: Baoquan He &lt;bhe@redhat.com&gt;
Cc: Borislav Petkov &lt;bp@alien8.de&gt;
Cc: Borislav Petkov &lt;bp@suse.de&gt;
Cc: Brian Gerst &lt;brgerst@gmail.com&gt;
Cc: Christian Borntraeger &lt;borntraeger@de.ibm.com&gt;
Cc: Dan Williams &lt;dan.j.williams@intel.com&gt;
Cc: Dave Hansen &lt;dave.hansen@linux.intel.com&gt;
Cc: Dave Young &lt;dyoung@redhat.com&gt;
Cc: Denys Vlasenko &lt;dvlasenk@redhat.com&gt;
Cc: Fabian Frederick &lt;fabf@skynet.be&gt;
Cc: H. Peter Anvin &lt;hpa@zytor.com&gt;
Cc: Joerg Roedel &lt;jroedel@suse.de&gt;
Cc: Josh Poimboeuf &lt;jpoimboe@redhat.com&gt;
Cc: Kees Cook &lt;keescook@chromium.org&gt;
Cc: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
Cc: Lv Zheng &lt;lv.zheng@intel.com&gt;
Cc: Mark Salter &lt;msalter@redhat.com&gt;
Cc: Peter Zijlstra &lt;peterz@infradead.org&gt;
Cc: Rafael J . Wysocki &lt;rafael.j.wysocki@intel.com&gt;
Cc: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Cc: Toshi Kani &lt;toshi.kani@hp.com&gt;
Cc: kernel-hardening@lists.openwall.com
Fixes: 021182e52fe0 ("Enable KASLR for physical mapping memory regions")
Link: http://lkml.kernel.org/r/1470762665-88032-2-git-send-email-thgarnie@google.com
Signed-off-by: Ingo Molnar &lt;mingo@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=fb754f958f8e46202c1efd7f66d5b3db1208117d'>Diffstat</a></div><table summary='diffstat' class='diffstat'>