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| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-25 03:53:42 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-25 03:53:42 -0300 |
| commit | 03dd4cb26d967f9588437b0fc9cc0e8353322bb7 (patch) | |
| tree | fa581f6dc1c0596391690d1f67eceef3af8246dc /Documentation/fault-injection | |
| parent | d4e493caf788ef44982e131ff9c786546904d934 (diff) | |
Linux-libre 4.5-gnu
Diffstat (limited to 'Documentation/fault-injection')
| -rw-r--r-- | Documentation/fault-injection/notifier-error-inject.txt | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/Documentation/fault-injection/notifier-error-inject.txt b/Documentation/fault-injection/notifier-error-inject.txt index 09adabef5..83d3f4e43 100644 --- a/Documentation/fault-injection/notifier-error-inject.txt +++ b/Documentation/fault-injection/notifier-error-inject.txt @@ -10,6 +10,7 @@ modules that can be used to test the following notifiers. * PM notifier * Memory hotplug notifier * powerpc pSeries reconfig notifier + * Netdevice notifier CPU notifier error injection module ----------------------------------- @@ -87,6 +88,30 @@ Possible pSeries reconfig notifier events to be failed are: * PSERIES_DRCONF_MEM_ADD * PSERIES_DRCONF_MEM_REMOVE +Netdevice notifier error injection module +---------------------------------------------- +This feature is controlled through debugfs interface +/sys/kernel/debug/notifier-error-inject/netdev/actions/<notifier event>/error + +Netdevice notifier events which can be failed are: + + * NETDEV_REGISTER + * NETDEV_CHANGEMTU + * NETDEV_CHANGENAME + * NETDEV_PRE_UP + * NETDEV_PRE_TYPE_CHANGE + * NETDEV_POST_INIT + * NETDEV_PRECHANGEMTU + * NETDEV_PRECHANGEUPPER + * NETDEV_CHANGEUPPER + +Example: Inject netdevice mtu change error (-22 == -EINVAL) + + # cd /sys/kernel/debug/notifier-error-inject/netdev + # echo -22 > actions/NETDEV_CHANGEMTU/error + # ip link set eth0 mtu 1024 + RTNETLINK answers: Invalid argument + For more usage examples ----------------------- There are tools/testing/selftests using the notifier error injection features |