-#define ODP_MAX 256 /* Maximum number of datapaths. */
-
-#define ODP_DP_CREATE _IO('O', 0)
-#define ODP_DP_DESTROY _IO('O', 1)
-#define ODP_DP_STATS _IOW('O', 2, struct odp_stats)
-
-#define ODP_GET_DROP_FRAGS _IOW('O', 3, int)
-#define ODP_SET_DROP_FRAGS _IOR('O', 4, int)
-
-#define ODP_GET_LISTEN_MASK _IOW('O', 5, int)
-#define ODP_SET_LISTEN_MASK _IOR('O', 6, int)
-
-#define ODP_VPORT_NEW _IOR('O', 7, struct odp_vport)
-#define ODP_VPORT_DEL _IOR('O', 8, struct odp_vport)
-#define ODP_VPORT_GET _IOWR('O', 9, struct odp_vport)
-#define ODP_VPORT_SET _IOR('O', 22, struct odp_vport)
-#define ODP_VPORT_DUMP _IOWR('O', 10, struct odp_vport)
-
-#define ODP_FLOW_GET _IOWR('O', 13, struct odp_flow)
-#define ODP_FLOW_PUT _IOWR('O', 14, struct odp_flow)
-#define ODP_FLOW_DUMP _IOWR('O', 15, struct odp_flow_dump)
-#define ODP_FLOW_FLUSH _IO('O', 16)
-#define ODP_FLOW_DEL _IOWR('O', 17, struct odp_flow)
+/**
+ * struct odp_header - header for ODP Generic Netlink messages.
+ * @dp_idx: Number of datapath to which the packet belongs.
+ *
+ * Attributes following the header are specific to a particular ODP Generic
+ * Netlink family, but all of the ODP families use this header.
+ */
+struct odp_header {
+ uint32_t dp_idx;
+};
+\f
+/**
+ * enum odp_datapath_attr - attributes for %ODP_DP_* commands.
+ * @ODP_DP_ATTR_NAME: Name of the network device that serves as the "local
+ * port". This is the name of the network device whose dp_idx is given in the
+ * &struct odp_header. Always present in notifications. Required in
+ * %ODP_DP_NEW requests. May be used as an alternative to specifying dp_idx on
+ * other requests (with a dp_idx of %UINT32_MAX).
+ * @ODP_DP_ATTR_STATS: Statistics about packets that have passed through the
+ * datapath. Always present in notifications.
+ * @ODP_DP_ATTR_IPV4_FRAGS: One of %ODP_DP_FRAG_*. Always present in
+ * notifications. May be included in %ODP_DP_NEW or %ODP_DP_SET requests to
+ * change the fragment handling policy.
+ * @ODP_DP_ATTR_SAMPLING: 32-bit fraction of packets to sample with
+ * @ODP_PACKET_CMD_SAMPLE. A value of 0 samples no packets, a value of
+ * %UINT32_MAX samples all packets, and intermediate values sample intermediate
+ * fractions of packets.
+ * @ODP_DP_ATTR_MCGROUPS: Nested attributes with multicast groups. Each nested
+ * attribute has a %ODP_PACKET_CMD_* type with a 32-bit value giving the
+ * Generic Netlink multicast group number used for sending this datapath's
+ * messages with that command type up to userspace.
+ *
+ * These attributes follow the &struct odp_header within the Generic Netlink
+ * payload for %ODP_DP_* commands.
+ */
+enum odp_datapath_attr {
+ ODP_DP_ATTR_UNSPEC,
+ ODP_DP_ATTR_NAME, /* name of dp_ifidx netdev */
+ ODP_DP_ATTR_STATS, /* struct odp_stats */
+ ODP_DP_ATTR_IPV4_FRAGS, /* 32-bit enum odp_frag_handling */
+ ODP_DP_ATTR_SAMPLING, /* 32-bit fraction of packets to sample. */
+ ODP_DP_ATTR_MCGROUPS, /* Nested attributes with multicast groups. */
+ __ODP_DP_ATTR_MAX
+};