diff --git a/libc/kernel/uapi/linux/openvswitch.h b/libc/kernel/uapi/linux/openvswitch.h
index d45f4fa..98c8037 100644
--- a/libc/kernel/uapi/linux/openvswitch.h
+++ b/libc/kernel/uapi/linux/openvswitch.h
@@ -429,6 +429,13 @@
   __OVS_CHECK_PKT_LEN_ATTR_MAX,
 };
 #define OVS_CHECK_PKT_LEN_ATTR_MAX (__OVS_CHECK_PKT_LEN_ATTR_MAX - 1)
+#define OVS_PSAMPLE_COOKIE_MAX_SIZE 16
+enum ovs_psample_attr {
+  OVS_PSAMPLE_ATTR_GROUP = 1,
+  OVS_PSAMPLE_ATTR_COOKIE,
+  __OVS_PSAMPLE_ATTR_MAX
+};
+#define OVS_PSAMPLE_ATTR_MAX (__OVS_PSAMPLE_ATTR_MAX - 1)
 enum ovs_action_attr {
   OVS_ACTION_ATTR_UNSPEC,
   OVS_ACTION_ATTR_OUTPUT,
@@ -455,6 +462,7 @@
   OVS_ACTION_ATTR_ADD_MPLS,
   OVS_ACTION_ATTR_DEC_TTL,
   OVS_ACTION_ATTR_DROP,
+  OVS_ACTION_ATTR_PSAMPLE,
   __OVS_ACTION_ATTR_MAX,
 };
 #define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1)