Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2007-2012 Nicira, Inc.
 */
 
#include <linux/netdevice.h>
#include <net/genetlink.h>
#include <net/netns/generic.h>
 
#include "datapath.h"
#include "vport-internal_dev.h"
#include "vport-netdev.h"
 
static void dp_detach_port_notify(struct vport *vport)
{
<------>struct sk_buff *notify;
<------>struct datapath *dp;
 
<------>dp = vport->dp;
<------>notify = ovs_vport_cmd_build_info(vport, ovs_dp_get_net(dp),
<------><------><------><------><------>  0, 0, OVS_VPORT_CMD_DEL);
<------>ovs_dp_detach_port(vport);
<------>if (IS_ERR(notify)) {
<------><------>genl_set_err(&dp_vport_genl_family, ovs_dp_get_net(dp), 0,
<------><------><------>     0, PTR_ERR(notify));
<------><------>return;
<------>}
 
<------>genlmsg_multicast_netns(&dp_vport_genl_family,
<------><------><------><------>ovs_dp_get_net(dp), notify, 0,
<------><------><------><------>0, GFP_KERNEL);
}
 
void ovs_dp_notify_wq(struct work_struct *work)
{
<------>struct ovs_net *ovs_net = container_of(work, struct ovs_net, dp_notify_work);
<------>struct datapath *dp;
 
<------>ovs_lock();
<------>list_for_each_entry(dp, &ovs_net->dps, list_node) {
<------><------>int i;
 
<------><------>for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) {
<------><------><------>struct vport *vport;
<------><------><------>struct hlist_node *n;
 
<------><------><------>hlist_for_each_entry_safe(vport, n, &dp->ports[i], dp_hash_node) {
<------><------><------><------>if (vport->ops->type == OVS_VPORT_TYPE_INTERNAL)
<------><------><------><------><------>continue;
 
<------><------><------><------>if (!(netif_is_ovs_port(vport->dev)))
<------><------><------><------><------>dp_detach_port_notify(vport);
<------><------><------>}
<------><------>}
<------>}
<------>ovs_unlock();
}
 
static int dp_device_event(struct notifier_block *unused, unsigned long event,
<------><------><------>   void *ptr)
{
<------>struct ovs_net *ovs_net;
<------>struct net_device *dev = netdev_notifier_info_to_dev(ptr);
<------>struct vport *vport = NULL;
 
<------>if (!ovs_is_internal_dev(dev))
<------><------>vport = ovs_netdev_get_vport(dev);
 
<------>if (!vport)
<------><------>return NOTIFY_DONE;
 
<------>if (event == NETDEV_UNREGISTER) {
<------><------>/* upper_dev_unlink and decrement promisc immediately */
<------><------>ovs_netdev_detach_dev(vport);
 
<------><------>/* schedule vport destroy, dev_put and genl notification */
<------><------>ovs_net = net_generic(dev_net(dev), ovs_net_id);
<------><------>queue_work(system_wq, &ovs_net->dp_notify_work);
<------>}
 
<------>return NOTIFY_DONE;
}
 
struct notifier_block ovs_dp_device_notifier = {
<------>.notifier_call = dp_device_event
};