/*
 * Copyright (c) 2007-2014 Nicira, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/if.h>
#include <linux/skbuff.h>
#include <linux/ip.h>
#include <linux/if_tunnel.h>
#include <linux/if_vlan.h>
#include <linux/in.h>
#include <linux/in_route.h>
#include <linux/inetdevice.h>
#include <linux/jhash.h>
#include <linux/list.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/workqueue.h>
#include <linux/rculist.h>
#include <net/route.h>
#include <net/xfrm.h>

#include <net/icmp.h>
#include <net/ip.h>
#include <net/ip_tunnels.h>
#include <net/gre.h>
#include <net/net_namespace.h>
#include <net/netns/generic.h>
#include <net/protocol.h>

#include "datapath.h"
#include "vport.h"
#include "vport-netdev.h"

static struct vport_ops ovs_gre_vport_ops;

static struct vport *gre_tnl_create(const struct vport_parms *parms)
{
	struct net *net = ovs_dp_get_net(parms->dp);
	struct net_device *dev;
	struct vport *vport;
	int err;

	vport = ovs_vport_alloc(0, &ovs_gre_vport_ops, parms);
	if (IS_ERR(vport))
		return vport;

	rtnl_lock();
	dev = gretap_fb_dev_create(net, parms->name, NET_NAME_USER);
	if (IS_ERR(dev)) {
		rtnl_unlock();
		ovs_vport_free(vport);
		return ERR_CAST(dev);
	}

	err = dev_change_flags(dev, dev->flags | IFF_UP);
	if (err < 0) {
		rtnl_delete_link(dev);
		rtnl_unlock();
		ovs_vport_free(vport);
		return ERR_PTR(err);
	}

	rtnl_unlock();
	return vport;
}

static struct vport *gre_create(const struct vport_parms *parms)
{
	struct vport *vport;

	vport = gre_tnl_create(parms);
	if (IS_ERR(vport))
		return vport;

	return ovs_netdev_link(vport, parms->name);
}

static struct vport_ops ovs_gre_vport_ops = {
	.type		= OVS_VPORT_TYPE_GRE,
	.create		= gre_create,
	.send		= dev_queue_xmit,
	.destroy	= ovs_netdev_tunnel_destroy,
};

static int __init ovs_gre_tnl_init(void)
{
	return ovs_vport_ops_register(&ovs_gre_vport_ops);
}

static void __exit ovs_gre_tnl_exit(void)
{
	ovs_vport_ops_unregister(&ovs_gre_vport_ops);
}

module_init(ovs_gre_tnl_init);
module_exit(ovs_gre_tnl_exit);

MODULE_DESCRIPTION("OVS: GRE switching port");
MODULE_LICENSE("GPL");
MODULE_ALIAS("vport-type-3");
 type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=62ed8ceda1699acae01b666497f004bfd3d67a6f'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?h=nds-private-remove&amp;id=62ed8ceda1699acae01b666497f004bfd3d67a6f'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/xfrm?h=nds-private-remove&amp;id=62ed8ceda1699acae01b666497f004bfd3d67a6f'>xfrm</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/xfrm/xfrm_ipcomp.c?h=nds-private-remove&amp;id=62ed8ceda1699acae01b666497f004bfd3d67a6f'>xfrm_ipcomp.c</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='62ed8ceda1699acae01b666497f004bfd3d67a6f'/><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>Dmitry Torokhov &lt;dmitry.torokhov@gmail.com&gt;</td><td class='right'>2017-01-24 09:57:18 -0800</td></tr>
<tr><th>committer</th><td>Dmitry Torokhov &lt;dmitry.torokhov@gmail.com&gt;</td><td class='right'>2017-01-24 09:57:18 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/xfrm/xfrm_ipcomp.c?h=nds-private-remove&amp;id=62ed8ceda1699acae01b666497f004bfd3d67a6f'>62ed8ceda1699acae01b666497f004bfd3d67a6f</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/xfrm/xfrm_ipcomp.c?id=62ed8ceda1699acae01b666497f004bfd3d67a6f'>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=62ed8ceda1699acae01b666497f004bfd3d67a6f'>fe38c83c49dfd568b540666948ef78cb9d082c38</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/xfrm/xfrm_ipcomp.c?h=nds-private-remove&amp;id=62ed8ceda1699acae01b666497f004bfd3d67a6f'>net/xfrm/xfrm_ipcomp.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/xfrm/xfrm_ipcomp.c?h=nds-private-remove&amp;id=1c3415a06b1016a596bfe59e0cfee56c773aa958'>1c3415a06b1016a596bfe59e0cfee56c773aa958</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/xfrm/xfrm_ipcomp.c?h=nds-private-remove&amp;id=62ed8ceda1699acae01b666497f004bfd3d67a6f&amp;id2=1c3415a06b1016a596bfe59e0cfee56c773aa958'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/xfrm/xfrm_ipcomp.c?h=nds-private-remove&amp;id=7a308bb3016f57e5be11a677d15b821536419d36'>7a308bb3016f57e5be11a677d15b821536419d36</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/xfrm/xfrm_ipcomp.c?h=nds-private-remove&amp;id=62ed8ceda1699acae01b666497f004bfd3d67a6f&amp;id2=7a308bb3016f57e5be11a677d15b821536419d36'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'v4.10-rc5' into for-linus</div><div class='commit-msg'>Sync up with mainline to apply fixup to a commit that came through
power supply tree.
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=62ed8ceda1699acae01b666497f004bfd3d67a6f'>Diffstat</a> (limited to 'net/xfrm/xfrm_ipcomp.c')</div><table summary='diffstat' class='diffstat'>