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-rw-r--r--include/linux/openvswitch.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/openvswitch.h b/include/linux/openvswitch.h
index d1ff5ec7b..e39e4377b 100644
--- a/include/linux/openvswitch.h
+++ b/include/linux/openvswitch.h
@@ -426,7 +426,9 @@ struct ovs_key_nd {
* @OVS_FLOW_ATTR_ACTIONS: Nested %OVS_ACTION_ATTR_* attributes specifying
* the actions to take for packets that match the key. Always present in
* notifications. Required for %OVS_FLOW_CMD_NEW requests, optional for
- * %OVS_FLOW_CMD_SET requests.
+ * %OVS_FLOW_CMD_SET requests. An %OVS_FLOW_CMD_SET without
+ * %OVS_FLOW_ATTR_ACTIONS will not modify the actions. To clear the actions,
+ * an %OVS_FLOW_ATTR_ACTIONS without any nested attributes must be given.
* @OVS_FLOW_ATTR_STATS: &struct ovs_flow_stats giving statistics for this
* flow. Present in notifications if the stats would be nonzero. Ignored in
* requests.