[PATCH net-next 1/2] openvswitch: Add conntrack limit netlink definition

[Yi-Hung Wei <yihung.wei@gmail.com>]

Define netlink messages and attributes to support user kernel
communication that using conntrack limit feature.

Signed-off-by: Yi-Hung Wei <yihung.wei@gmail.com>
---
 include/uapi/linux/openvswitch.h | 62 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)

diff --git a/include/uapi/linux/openvswitch.h b/include/uapi/linux/openvswitch.h
index 713e56ce681f..ca63c16375ce 100644
--- a/include/uapi/linux/openvswitch.h
+++ b/include/uapi/linux/openvswitch.h
@@ -937,4 +937,66 @@ enum ovs_meter_band_type {
 
 #define OVS_METER_BAND_TYPE_MAX (__OVS_METER_BAND_TYPE_MAX - 1)
 
+/* Conntrack limit */
+#define OVS_CT_LIMIT_FAMILY  "ovs_ct_limit"
+#define OVS_CT_LIMIT_MCGROUP "ovs_ct_limit"
+#define OVS_CT_LIMIT_VERSION 0x1
+
+enum ovs_ct_limit_cmd {
+	OVS_CT_LIMIT_CMD_UNSPEC,
+	OVS_CT_LIMIT_CMD_SET,		/* Add or modify ct limit. */
+	OVS_CT_LIMIT_CMD_DEL,		/* Delete ct limit. */
+	OVS_CT_LIMIT_CMD_GET		/* Get ct limit. */
+};
+
+enum ovs_ct_limit_attr {
+	OVS_CT_LIMIT_ATTR_UNSPEC,
+	OVS_CT_LIMIT_ATTR_OPTION,	/* Nested OVS_CT_LIMIT_ATTR_* */
+	__OVS_CT_LIMIT_ATTR_MAX
+};
+
+#define OVS_CT_LIMIT_ATTR_MAX (__OVS_CT_LIMIT_ATTR_MAX - 1)
+
+/**
+ * @OVS_CT_ZONE_LIMIT_ATTR_SET_REQ: Contains either
+ * OVS_CT_ZONE_LIMIT_ATTR_DEFAULT_LIMIT or a pair of
+ * OVS_CT_ZONE_LIMIT_ATTR_ZONE and OVS_CT_ZONE_LIMIT_ATTR_LIMIT.
+ * @OVS_CT_ZONE_LIMIT_ATTR_DEL_REQ: Contains OVS_CT_ZONE_LIMIT_ATTR_ZONE.
+ * @OVS_CT_ZONE_LIMIT_ATTR_GET_REQ: Contains OVS_CT_ZONE_LIMIT_ATTR_ZONE.
+ * @OVS_CT_ZONE_LIMIT_ATTR_GET_RLY: Contains either
+ * OVS_CT_ZONE_LIMIT_ATTR_DEFAULT_LIMIT or a triple of
+ * OVS_CT_ZONE_LIMIT_ATTR_ZONE, OVS_CT_ZONE_LIMIT_ATTR_LIMIT and
+ * OVS_CT_ZONE_LIMIT_ATTR_COUNT.
+ */
+enum ovs_ct_limit_option_attr {
+	OVS_CT_LIMIT_OPTION_ATTR_UNSPEC,
+	OVS_CT_ZONE_LIMIT_ATTR_SET_REQ,	/* Nested OVS_CT_ZONE_LIMIT_ATTR_*
+					 * attributes. */
+	OVS_CT_ZONE_LIMIT_ATTR_DEL_REQ,	/* Nested OVS_CT_ZONE_LIMIT_ATTR_*
+					 * attributes. */
+	OVS_CT_ZONE_LIMIT_ATTR_GET_REQ,	/* Nested OVS_CT_ZONE_LIMIT_ATTR_*
+					 * attributes. */
+	OVS_CT_ZONE_LIMIT_ATTR_GET_RLY,	/* Nested OVS_CT_ZONE_LIMIT_ATTR_*
+					 * attributes. */
+	__OVS_CT_LIMIT_OPTION_ATTR_MAX
+};
+
+#define OVS_CT_LIMIT_OPTION_ATTR_MAX (__OVS_CT_LIMIT_OPTION_ATTR_MAX - 1)
+
+enum ovs_ct_zone_limit_attr {
+	OVS_CT_ZONE_LIMIT_ATTR_UNSPEC,
+	OVS_CT_ZONE_LIMIT_ATTR_DEFAULT_LIMIT,	/* u32 default conntrack limit
+						 * for all zones. */
+	OVS_CT_ZONE_LIMIT_ATTR_ZONE,		/* u16 conntrack zone id. */
+	OVS_CT_ZONE_LIMIT_ATTR_LIMIT,		/* u32 max number of conntrack
+						 * entries allowed in the
+						 * corresponding zone. */
+	OVS_CT_ZONE_LIMIT_ATTR_COUNT,		/* u32 number of conntrack
+						 * entries in the corresponding
+						 * zone. */
+	__OVS_CT_ZONE_LIMIT_ATTR_MAX
+};
+
+#define OVS_CT_ZONE_LIMIT_ATTR_MAX (__OVS_CT_ZONE_LIMIT_ATTR_MAX - 1)
+
 #endif /* _LINUX_OPENVSWITCH_H */
-- 
2.7.4