/*
 * net/sched/em_u32.c	U32 Ematch
 *
 *		This program is free software; you can redistribute it and/or
 *		modify it under the terms of the GNU General Public License
 *		as published by the Free Software Foundation; either version
 *		2 of the License, or (at your option) any later version.
 *
 * Authors:	Thomas Graf <tgraf@suug.ch>
 *		Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
 *
 * Based on net/sched/cls_u32.c
 */

#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/skbuff.h>
#include <net/pkt_cls.h>

static int em_u32_match(struct sk_buff *skb, struct tcf_ematch *em,
			struct tcf_pkt_info *info)
{
	struct tc_u32_key *key = (struct tc_u32_key *) em->data;
	const unsigned char *ptr = skb_network_header(skb);

	if (info) {
		if (info->ptr)
			ptr = info->ptr;
		ptr += (info->nexthdr & key->offmask);
	}

	ptr += key->off;

	if (!tcf_valid_offset(skb, ptr, sizeof(u32)))
		return 0;

	return !(((*(__be32 *) ptr)  ^ key->val) & key->mask);
}

static struct tcf_ematch_ops em_u32_ops = {
	.kind	  = TCF_EM_U32,
	.datalen  = sizeof(struct tc_u32_key),
	.match	  = em_u32_match,
	.owner	  = THIS_MODULE,
	.link	  = LIST_HEAD_INIT(em_u32_ops.link)
};

static int __init init_em_u32(void)
{
	return tcf_em_register(&em_u32_ops);
}

static void __exit exit_em_u32(void)
{
	tcf_em_unregister(&em_u32_ops);
}

MODULE_LICENSE("GPL");

module_init(init_em_u32);
module_exit(exit_em_u32);

MODULE_ALIAS_TCF_EMATCH(TCF_EM_U32);
></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=bfb34527a32a1a576d9bfb7026d3ab0369a6cd60'>refs</a><a class='active' href='/cgit.cgi/linux/net-next.git/log/net?showmsg=1'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/net?id=bfb34527a32a1a576d9bfb7026d3ab0369a6cd60'>tree</a><a href='/cgit.cgi/linux/net-next.git/commit/net?id=bfb34527a32a1a576d9bfb7026d3ab0369a6cd60'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/net?id=bfb34527a32a1a576d9bfb7026d3ab0369a6cd60'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/net'>
<input type='hidden' name='id' value='bfb34527a32a1a576d9bfb7026d3ab0369a6cd60'/><input type='hidden' name='showmsg' value='1'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=bfb34527a32a1a576d9bfb7026d3ab0369a6cd60&amp;showmsg=1'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?id=bfb34527a32a1a576d9bfb7026d3ab0369a6cd60&amp;showmsg=1'>net</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net?id=bfb34527a32a1a576d9bfb7026d3ab0369a6cd60'>Collapse</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
t.cgi/linux/net-next.git/commit/drivers/usb?h=nds-private-remove&amp;id=bbb27fc33d44e7b8d96369810654df4ee1837566'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/early?h=nds-private-remove&amp;id=bbb27fc33d44e7b8d96369810654df4ee1837566'>early</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='bbb27fc33d44e7b8d96369810654df4ee1837566'/><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>Ricardo Ribalda &lt;ricardo.ribalda@gmail.com&gt;</td><td class='right'>2017-02-02 20:15:16 +0100</td></tr>
<tr><th>committer</th><td>Wolfram Sang &lt;wsa@the-dreams.de&gt;</td><td class='right'>2017-02-09 17:13:01 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/early?h=nds-private-remove&amp;id=bbb27fc33d44e7b8d96369810654df4ee1837566'>bbb27fc33d44e7b8d96369810654df4ee1837566</a> (<a href='/cgit.cgi/linux/net-next.git/patch/drivers/usb/early?id=bbb27fc33d44e7b8d96369810654df4ee1837566'>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=bbb27fc33d44e7b8d96369810654df4ee1837566'>b769e165ad52c0021054f1a048b62bd7e4fbec47</a> /<a href='/cgit.cgi/linux/net-next.git/tree/drivers/usb/early?h=nds-private-remove&amp;id=bbb27fc33d44e7b8d96369810654df4ee1837566'>drivers/usb/early</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/early?h=nds-private-remove&amp;id=f43128c75202f29ee71aa83e6c320a911137c189'>f43128c75202f29ee71aa83e6c320a911137c189</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/early?h=nds-private-remove&amp;id=bbb27fc33d44e7b8d96369810654df4ee1837566&amp;id2=f43128c75202f29ee71aa83e6c320a911137c189'>diff</a>)</td></tr></table>
<div class='commit-subject'>i2c: piix4: Request the SMBUS semaphore inside the mutex</div><div class='commit-msg'>SMBSLVCNT must be protected with the piix4_mutex_sb800 in order to avoid
multiple buses accessing to the semaphore at the same time.

Fixes: 701dc207bf55 ("i2c: piix4: Avoid race conditions with IMC")
Reported-by: Jean Delvare &lt;jdelvare@suse.de&gt;
Signed-off-by: Ricardo Ribalda Delgado &lt;ricardo.ribalda@gmail.com&gt;
Signed-off-by: Jean Delvare &lt;jdelvare@suse.de&gt;
Signed-off-by: Wolfram Sang &lt;wsa@the-dreams.de&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=bbb27fc33d44e7b8d96369810654df4ee1837566'>Diffstat</a> (limited to 'drivers/usb/early')</div><table summary='diffstat' class='diffstat'>