/*
 *	Handle firewalling core
 *	Linux ethernet bridge
 *
 *	Authors:
 *	Lennert Buytenhek		<buytenh@gnu.org>
 *	Bart De Schuymer		<bdschuym@pandora.be>
 *
 *	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.
 *
 *	Lennert dedicates this file to Kerstin Wurdinger.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/in_route.h>
#include <linux/inetdevice.h>
#include <net/route.h>

#include "br_private.h"
#ifdef CONFIG_SYSCTL
#include <linux/sysctl.h>
#endif

static void fake_update_pmtu(struct dst_entry *dst, struct sock *sk,
			     struct sk_buff *skb, u32 mtu)
{
}

static void fake_redirect(struct dst_entry *dst, struct sock *sk,
			  struct sk_buff *skb)
{
}

static u32 *fake_cow_metrics(struct dst_entry *dst, unsigned long old)
{
	return NULL;
}

static struct neighbour *fake_neigh_lookup(const struct dst_entry *dst,
					   struct sk_buff *skb,
					   const void *daddr)
{
	return NULL;
}

static unsigned int fake_mtu(const struct dst_entry *dst)
{
	return dst->dev->mtu;
}

static struct dst_ops fake_dst_ops = {
	.family		= AF_INET,
	.update_pmtu	= fake_update_pmtu,
	.redirect	= fake_redirect,
	.cow_metrics	= fake_cow_metrics,
	.neigh_lookup	= fake_neigh_lookup,
	.mtu		= fake_mtu,
};

/*
 * Initialize bogus route table used to keep netfilter happy.
 * Currently, we fill in the PMTU entry because netfilter
 * refragmentation needs it, and the rt_flags entry because
 * ipt_REJECT needs it.  Future netfilter modules might
 * require us to fill additional fields.
 */
static const u32 br_dst_default_metrics[RTAX_MAX] = {
	[RTAX_MTU - 1] = 1500,
};

void br_netfilter_rtable_init(struct net_bridge *br)
{
	struct rtable *rt = &br->fake_rtable;

	atomic_set(&rt->dst.__refcnt, 1);
	rt->dst.dev = br->dev;
	rt->dst.path = &rt->dst;
	dst_init_metrics(&rt->dst, br_dst_default_metrics, true);
	rt->dst.flags	= DST_NOXFRM | DST_FAKE_RTABLE;
	rt->dst.ops = &fake_dst_ops;
}

int __init br_nf_core_init(void)
{
	return dst_entries_init(&fake_dst_ops);
}

void br_nf_core_fini(void)
{
	dst_entries_destroy(&fake_dst_ops);
}
 class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/tools/perf/ui/ui.h'>
<input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='fd76d9105b8e5b80bee58311a5c88d6594622c00'/><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/?h=nds-private-remove&amp;id=fd76d9105b8e5b80bee58311a5c88d6594622c00'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools?h=nds-private-remove&amp;id=fd76d9105b8e5b80bee58311a5c88d6594622c00'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/perf?h=nds-private-remove&amp;id=fd76d9105b8e5b80bee58311a5c88d6594622c00'>perf</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/perf/ui?h=nds-private-remove&amp;id=fd76d9105b8e5b80bee58311a5c88d6594622c00'>ui</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/perf/ui/ui.h?h=nds-private-remove&amp;id=fd76d9105b8e5b80bee58311a5c88d6594622c00'>ui.h</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/tools/perf/ui/ui.h?h=nds-private-remove&amp;id=fd76d9105b8e5b80bee58311a5c88d6594622c00&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>