VisionFive2 Linux kernel

09c434b8a0047 (Thomas Gleixner     2019-05-19 13:08:20 +0100  1) // SPDX-License-Identifier: GPL-2.0-only
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100  2) #include <linux/kernel.h>
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100  3) #include <linux/module.h>
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100  4) #include <linux/netdevice.h>
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100  5) 
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100  6) #include "notifier-error-inject.h"
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100  7) 
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100  8) static int priority;
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100  9) module_param(priority, int, 0);
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 10) MODULE_PARM_DESC(priority, "specify netdevice notifier priority");
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 11) 
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 12) static struct notifier_err_inject netdev_notifier_err_inject = {
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 13) 	.actions = {
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 14) 		{ NOTIFIER_ERR_INJECT_ACTION(NETDEV_REGISTER) },
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 15) 		{ NOTIFIER_ERR_INJECT_ACTION(NETDEV_CHANGEMTU) },
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 16) 		{ NOTIFIER_ERR_INJECT_ACTION(NETDEV_CHANGENAME) },
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 17) 		{ NOTIFIER_ERR_INJECT_ACTION(NETDEV_PRE_UP) },
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 18) 		{ NOTIFIER_ERR_INJECT_ACTION(NETDEV_PRE_TYPE_CHANGE) },
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 19) 		{ NOTIFIER_ERR_INJECT_ACTION(NETDEV_POST_INIT) },
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 20) 		{ NOTIFIER_ERR_INJECT_ACTION(NETDEV_PRECHANGEMTU) },
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 21) 		{ NOTIFIER_ERR_INJECT_ACTION(NETDEV_PRECHANGEUPPER) },
c39d0454ec9b7 (Ido Schimmel        2015-12-03 12:12:04 +0100 22) 		{ NOTIFIER_ERR_INJECT_ACTION(NETDEV_CHANGEUPPER) },
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 23) 		{}
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 24) 	}
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 25) };
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 26) 
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 27) static struct dentry *dir;
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 28) 
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 29) static int netdev_err_inject_init(void)
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 30) {
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 31) 	int err;
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 32) 
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 33) 	dir = notifier_err_inject_init("netdev", notifier_err_inject_dir,
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 34) 				       &netdev_notifier_err_inject, priority);
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 35) 	if (IS_ERR(dir))
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 36) 		return PTR_ERR(dir);
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 37) 
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 38) 	err = register_netdevice_notifier(&netdev_notifier_err_inject.nb);
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 39) 	if (err)
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 40) 		debugfs_remove_recursive(dir);
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 41) 
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 42) 	return err;
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 43) }
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 44) 
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 45) static void netdev_err_inject_exit(void)
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 46) {
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 47) 	unregister_netdevice_notifier(&netdev_notifier_err_inject.nb);
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 48) 	debugfs_remove_recursive(dir);
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 49) }
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 50) 
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 51) module_init(netdev_err_inject_init);
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 52) module_exit(netdev_err_inject_exit);
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 53) 
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 54) MODULE_DESCRIPTION("Netdevice notifier error injection module");
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 55) MODULE_LICENSE("GPL");
02fff96a79775 (Nikolay Aleksandrov 2015-11-28 13:45:28 +0100 56) MODULE_AUTHOR("Nikolay Aleksandrov <razor@blackwall.org>");