openvswitch: Add meter netlink definitions

Meter has its own netlink family. Define netlink messages and attributes
for communicating with the user space programs.

Signed-off-by: Andy Zhou <azhou@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/uapi/linux/openvswitch.h b/include/uapi/linux/openvswitch.h
index ec75a685f1dd6ffa742686c017af0f00c09f3f5b..d60b9a4cf3d1df8ed2f5aef34d667e4ad0f397fe 100644 (file)
--- a/include/uapi/linux/openvswitch.h
+++ b/include/uapi/linux/openvswitch.h
@@ -883,4 +883,55 @@ enum ovs_action_attr {
 
 #define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1)
 
+/* Meters. */
+#define OVS_METER_FAMILY  "ovs_meter"
+#define OVS_METER_MCGROUP "ovs_meter"
+#define OVS_METER_VERSION 0x1
+
+enum ovs_meter_cmd {
+       OVS_METER_CMD_UNSPEC,
+       OVS_METER_CMD_FEATURES, /* Get features supported by the datapath. */
+       OVS_METER_CMD_SET,      /* Add or modify a meter. */
+       OVS_METER_CMD_DEL,      /* Delete a meter. */
+       OVS_METER_CMD_GET       /* Get meter stats. */
+};
+
+enum ovs_meter_attr {
+       OVS_METER_ATTR_UNSPEC,
+       OVS_METER_ATTR_ID,      /* u32 meter ID within datapath. */
+       OVS_METER_ATTR_KBPS,    /* No argument. If set, units in kilobits
+                                * per second. Otherwise, units in
+                                * packets per second.
+                                */
+       OVS_METER_ATTR_STATS,   /* struct ovs_flow_stats for the meter. */
+       OVS_METER_ATTR_BANDS,   /* Nested attributes for meter bands. */
+       OVS_METER_ATTR_USED,    /* u64 msecs last used in monotonic time. */
+       OVS_METER_ATTR_CLEAR,   /* Flag to clear stats, used. */
+       OVS_METER_ATTR_MAX_METERS, /* u32 number of meters supported. */
+       OVS_METER_ATTR_MAX_BANDS,  /* u32 max number of bands per meter. */
+       OVS_METER_ATTR_PAD,
+       __OVS_METER_ATTR_MAX
+};
+
+#define OVS_METER_ATTR_MAX (__OVS_METER_ATTR_MAX - 1)
+
+enum ovs_band_attr {
+       OVS_BAND_ATTR_UNSPEC,
+       OVS_BAND_ATTR_TYPE,     /* u32 OVS_METER_BAND_TYPE_* constant. */
+       OVS_BAND_ATTR_RATE,     /* u32 band rate in meter units (see above). */
+       OVS_BAND_ATTR_BURST,    /* u32 burst size in meter units. */
+       OVS_BAND_ATTR_STATS,    /* struct ovs_flow_stats for the band. */
+       __OVS_BAND_ATTR_MAX
+};
+
+#define OVS_BAND_ATTR_MAX (__OVS_BAND_ATTR_MAX - 1)
+
+enum ovs_meter_band_type {
+       OVS_METER_BAND_TYPE_UNSPEC,
+       OVS_METER_BAND_TYPE_DROP,   /* Drop exceeding packets. */
+       __OVS_METER_BAND_TYPE_MAX
+};
+
+#define OVS_METER_BAND_TYPE_MAX (__OVS_METER_BAND_TYPE_MAX - 1)
+
 #endif /* _LINUX_OPENVSWITCH_H */