forked from Minki/linux
fc4099f172
While transitioning to netdev based vport we broke OVS
feature which allows user to retrieve tunnel packet egress
information for lwtunnel devices. Following patch fixes it
by introducing ndo operation to get the tunnel egress info.
Same ndo operation can be used for lwtunnel devices and compat
ovs-tnl-vport devices. So after adding such device operation
we can remove similar operation from ovs-vport.
Fixes: 614732eaa1 ("openvswitch: Use regular VXLAN net_device device").
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
139 lines
3.1 KiB
C
139 lines
3.1 KiB
C
/*
|
|
* Copyright (c) 2014 Nicira, Inc.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
|
|
#include <linux/in.h>
|
|
#include <linux/ip.h>
|
|
#include <linux/net.h>
|
|
#include <linux/rculist.h>
|
|
#include <linux/udp.h>
|
|
#include <linux/if_vlan.h>
|
|
#include <linux/module.h>
|
|
|
|
#include <net/geneve.h>
|
|
#include <net/icmp.h>
|
|
#include <net/ip.h>
|
|
#include <net/route.h>
|
|
#include <net/udp.h>
|
|
#include <net/xfrm.h>
|
|
|
|
#include "datapath.h"
|
|
#include "vport.h"
|
|
#include "vport-netdev.h"
|
|
|
|
static struct vport_ops ovs_geneve_vport_ops;
|
|
/**
|
|
* struct geneve_port - Keeps track of open UDP ports
|
|
* @dst_port: destination port.
|
|
*/
|
|
struct geneve_port {
|
|
u16 port_no;
|
|
};
|
|
|
|
static inline struct geneve_port *geneve_vport(const struct vport *vport)
|
|
{
|
|
return vport_priv(vport);
|
|
}
|
|
|
|
static int geneve_get_options(const struct vport *vport,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct geneve_port *geneve_port = geneve_vport(vport);
|
|
|
|
if (nla_put_u16(skb, OVS_TUNNEL_ATTR_DST_PORT, geneve_port->port_no))
|
|
return -EMSGSIZE;
|
|
return 0;
|
|
}
|
|
|
|
static struct vport *geneve_tnl_create(const struct vport_parms *parms)
|
|
{
|
|
struct net *net = ovs_dp_get_net(parms->dp);
|
|
struct nlattr *options = parms->options;
|
|
struct geneve_port *geneve_port;
|
|
struct net_device *dev;
|
|
struct vport *vport;
|
|
struct nlattr *a;
|
|
u16 dst_port;
|
|
int err;
|
|
|
|
if (!options) {
|
|
err = -EINVAL;
|
|
goto error;
|
|
}
|
|
|
|
a = nla_find_nested(options, OVS_TUNNEL_ATTR_DST_PORT);
|
|
if (a && nla_len(a) == sizeof(u16)) {
|
|
dst_port = nla_get_u16(a);
|
|
} else {
|
|
/* Require destination port from userspace. */
|
|
err = -EINVAL;
|
|
goto error;
|
|
}
|
|
|
|
vport = ovs_vport_alloc(sizeof(struct geneve_port),
|
|
&ovs_geneve_vport_ops, parms);
|
|
if (IS_ERR(vport))
|
|
return vport;
|
|
|
|
geneve_port = geneve_vport(vport);
|
|
geneve_port->port_no = dst_port;
|
|
|
|
rtnl_lock();
|
|
dev = geneve_dev_create_fb(net, parms->name, NET_NAME_USER, dst_port);
|
|
if (IS_ERR(dev)) {
|
|
rtnl_unlock();
|
|
ovs_vport_free(vport);
|
|
return ERR_CAST(dev);
|
|
}
|
|
|
|
dev_change_flags(dev, dev->flags | IFF_UP);
|
|
rtnl_unlock();
|
|
return vport;
|
|
error:
|
|
return ERR_PTR(err);
|
|
}
|
|
|
|
static struct vport *geneve_create(const struct vport_parms *parms)
|
|
{
|
|
struct vport *vport;
|
|
|
|
vport = geneve_tnl_create(parms);
|
|
if (IS_ERR(vport))
|
|
return vport;
|
|
|
|
return ovs_netdev_link(vport, parms->name);
|
|
}
|
|
|
|
static struct vport_ops ovs_geneve_vport_ops = {
|
|
.type = OVS_VPORT_TYPE_GENEVE,
|
|
.create = geneve_create,
|
|
.destroy = ovs_netdev_tunnel_destroy,
|
|
.get_options = geneve_get_options,
|
|
.send = ovs_netdev_send,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static int __init ovs_geneve_tnl_init(void)
|
|
{
|
|
return ovs_vport_ops_register(&ovs_geneve_vport_ops);
|
|
}
|
|
|
|
static void __exit ovs_geneve_tnl_exit(void)
|
|
{
|
|
ovs_vport_ops_unregister(&ovs_geneve_vport_ops);
|
|
}
|
|
|
|
module_init(ovs_geneve_tnl_init);
|
|
module_exit(ovs_geneve_tnl_exit);
|
|
|
|
MODULE_DESCRIPTION("OVS: Geneve swiching port");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("vport-type-5");
|