/*
 * 'raw' table, which is the very first hooked in at PRE_ROUTING and LOCAL_OUT .
 *
 * Copyright (C) 2003 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
 */
#include <linux/module.h>
#include <linux/netfilter_ipv4/ip_tables.h>
#include <linux/slab.h>
#include <net/ip.h>

#define RAW_VALID_HOOKS ((1 << NF_INET_PRE_ROUTING) | (1 << NF_INET_LOCAL_OUT))

static int __net_init iptable_raw_table_init(struct net *net);

static const struct xt_table packet_raw = {
	.name = "raw",
	.valid_hooks =  RAW_VALID_HOOKS,
	.me = THIS_MODULE,
	.af = NFPROTO_IPV4,
	.priority = NF_IP_PRI_RAW,
	.table_init = iptable_raw_table_init,
};

/* The work comes in here from netfilter.c. */
static unsigned int
iptable_raw_hook(void *priv, struct sk_buff *skb,
		 const struct nf_hook_state *state)
{
	if (state->hook == NF_INET_LOCAL_OUT &&
	    (skb->len < sizeof(struct iphdr) ||
	     ip_hdrlen(skb) < sizeof(struct iphdr)))
		/* root is playing with raw sockets. */
		return NF_ACCEPT;

	return ipt_do_table(skb, state, state->net->ipv4.iptable_raw);
}

static struct nf_hook_ops *rawtable_ops __read_mostly;

static int __net_init iptable_raw_table_init(struct net *net)
{
	struct ipt_replace *repl;
	int ret;

	if (net->ipv4.iptable_raw)
		return 0;

	repl = ipt_alloc_initial_table(&packet_raw);
	if (repl == NULL)
		return -ENOMEM;
	ret = ipt_register_table(net, &packet_raw, repl, rawtable_ops,
				 &net->ipv4.iptable_raw);
	kfree(repl);
	return ret;
}

static void __net_exit iptable_raw_net_exit(struct net *net)
{
	if (!net->ipv4.iptable_raw)
		return;
	ipt_unregister_table(net, net->ipv4.iptable_raw, rawtable_ops);
	net->ipv4.iptable_raw = NULL;
}

static struct pernet_operations iptable_raw_net_ops = {
	.exit = iptable_raw_net_exit,
};

static int __init iptable_raw_init(void)
{
	int ret;

	rawtable_ops = xt_hook_ops_alloc(&packet_raw, iptable_raw_hook);
	if (IS_ERR(rawtable_ops))
		return PTR_ERR(rawtable_ops);

	ret = register_pernet_subsys(&iptable_raw_net_ops);
	if (ret < 0) {
		kfree(rawtable_ops);
		return ret;
	}

	ret = iptable_raw_table_init(&init_net);
	if (ret) {
		unregister_pernet_subsys(&iptable_raw_net_ops);
		kfree(rawtable_ops);
	}

	return ret;
}

static void __exit iptable_raw_fini(void)
{
	unregister_pernet_subsys(&iptable_raw_net_ops);
	kfree(rawtable_ops);
}

module_init(iptable_raw_init);
module_exit(iptable_raw_fini);
MODULE_LICENSE("GPL");
' method='get' action='/cgit.cgi/linux/net-next.git/log/include/dt-bindings/pwm'>
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</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=99421c1cb27fb837e93b517036fab4500fe39de5'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=99421c1cb27fb837e93b517036fab4500fe39de5'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings?h=nds-private-remove&amp;id=99421c1cb27fb837e93b517036fab4500fe39de5'>dt-bindings</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/pwm?h=nds-private-remove&amp;id=99421c1cb27fb837e93b517036fab4500fe39de5'>pwm</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='99421c1cb27fb837e93b517036fab4500fe39de5'/><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'>2017-01-15 16:09:50 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-15 16:09:50 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/pwm?h=nds-private-remove&amp;id=99421c1cb27fb837e93b517036fab4500fe39de5'>99421c1cb27fb837e93b517036fab4500fe39de5</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/dt-bindings/pwm?id=99421c1cb27fb837e93b517036fab4500fe39de5'>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=99421c1cb27fb837e93b517036fab4500fe39de5'>de5fc5bacb671223f389793ad643cebe520bc292</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/dt-bindings/pwm?h=nds-private-remove&amp;id=99421c1cb27fb837e93b517036fab4500fe39de5'>include/dt-bindings/pwm</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/pwm?h=nds-private-remove&amp;id=c92816275674c1491ce228ee49aa030a5fa1be04'>c92816275674c1491ce228ee49aa030a5fa1be04</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/dt-bindings/pwm?h=nds-private-remove&amp;id=99421c1cb27fb837e93b517036fab4500fe39de5&amp;id2=c92816275674c1491ce228ee49aa030a5fa1be04'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/pwm?h=nds-private-remove&amp;id=93362fa47fe98b62e4a34ab408c4a418432e7939'>93362fa47fe98b62e4a34ab408c4a418432e7939</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/dt-bindings/pwm?h=nds-private-remove&amp;id=99421c1cb27fb837e93b517036fab4500fe39de5&amp;id2=93362fa47fe98b62e4a34ab408c4a418432e7939'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace</div><div class='commit-msg'>Pull namespace fixes from Eric Biederman:
 "This tree contains 4 fixes.

  The first is a fix for a race that can causes oopses under the right
  circumstances, and that someone just recently encountered.

  Past that are several small trivial correct fixes. A real issue that
  was blocking development of an out of tree driver, but does not appear
  to have caused any actual problems for in-tree code. A potential
  deadlock that was reported by lockdep. And a deadlock people have
  experienced and took the time to track down caused by a cleanup that
  removed the code to drop a reference count"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  sysctl: Drop reference added by grab_header in proc_sys_readdir
  pid: fix lockdep deadlock warning due to ucount_lock
  libfs: Modify mount_pseudo_xattr to be clear it is not a userspace mount
  mnt: Protect the mountpoint hashtable with mount_lock
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=99421c1cb27fb837e93b517036fab4500fe39de5'>Diffstat</a> (limited to 'include/dt-bindings/pwm')</div><table summary='diffstat' class='diffstat'>