Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright (c) 2014 Nicira, Inc.
 */
 
#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 dst_port;
};
 
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->dst_port))
<------><------>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->dst_port = 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);
<------>}
 
<------>err = dev_change_flags(dev, dev->flags | IFF_UP, NULL);
<------>if (err < 0) {
<------><------>rtnl_delete_link(dev);
<------><------>rtnl_unlock();
<------><------>ovs_vport_free(vport);
<------><------>goto error;
<------>}
 
<------>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		= dev_queue_xmit,
};
 
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 switching port");
MODULE_LICENSE("GPL");
MODULE_ALIAS("vport-type-5");