openvswitch: Add conntrack limit netlink definition

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

Signed-off-by: Yi-Hung Wei <yihung.wei@gmail.com>
Acked-by: Pravin B Shelar <pshelar@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 713e56c..863aaba 100644 (file)
--- a/include/uapi/linux/openvswitch.h
+++ b/include/uapi/linux/openvswitch.h
@@ -937,4 +937,32 @@ 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_ZONE_LIMIT,   /* Nested struct ovs_zone_limit. */
+       __OVS_CT_LIMIT_ATTR_MAX
+};
+
+#define OVS_CT_LIMIT_ATTR_MAX (__OVS_CT_LIMIT_ATTR_MAX - 1)
+
+#define OVS_ZONE_LIMIT_DEFAULT_ZONE -1
+
+struct ovs_zone_limit {
+       int zone_id;
+       __u32 limit;
+       __u32 count;
+};
+
 #endif /* _LINUX_OPENVSWITCH_H */