linux-imx

#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 <razor@blackwall.org>");