// SPDX-License-Identifier: GPL-2.0-only
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include "notifier-error-inject.h"
static int priority;
module_param(priority, int , 0);
MODULE_PARM_DESC(priority, "specify netdevice notifier priority" );
static struct notifier_err_inject netdev_notifier_err_inject = {
.actions = {
{ NOTIFIER_ERR_INJECT_ACTION(NETDEV_REGISTER) },
{ NOTIFIER_ERR_INJECT_ACTION(NETDEV_CHANGEMTU) },
{ NOTIFIER_ERR_INJECT_ACTION(NETDEV_CHANGENAME) },
{ NOTIFIER_ERR_INJECT_ACTION(NETDEV_PRE_UP) },
{ NOTIFIER_ERR_INJECT_ACTION(NETDEV_PRE_TYPE_CHANGE) },
{ NOTIFIER_ERR_INJECT_ACTION(NETDEV_POST_INIT) },
{ NOTIFIER_ERR_INJECT_ACTION(NETDEV_PRECHANGEMTU) },
{ NOTIFIER_ERR_INJECT_ACTION(NETDEV_PRECHANGEUPPER) },
{ NOTIFIER_ERR_INJECT_ACTION(NETDEV_CHANGEUPPER) },
{}
}
};
static struct dentry *dir;
static int netdev_err_inject_init(void )
{
int err;
dir = notifier_err_inject_init("netdev" , notifier_err_inject_dir,
&netdev_notifier_err_inject, priority);
if (IS_ERR(dir))
return PTR_ERR(dir);
err = register_netdevice_notifier(&netdev_notifier_err_inject.nb);
if (err)
debugfs_remove_recursive(dir);
return err;
}
static void netdev_err_inject_exit(void )
{
unregister_netdevice_notifier(&netdev_notifier_err_inject.nb);
debugfs_remove_recursive(dir);
}
module_init(netdev_err_inject_init);
module_exit(netdev_err_inject_exit);
MODULE_DESCRIPTION("Netdevice notifier error injection module" );
MODULE_LICENSE("GPL" );
MODULE_AUTHOR("Nikolay Aleksandrov " );
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