#include <linux/if_link.h>
#include <linux/netlink.h>
-#define ODP_DP_NEW _IOWR('O', 0, struct odp_datapath)
-#define ODP_DP_DEL _IOR('O', 1, struct odp_datapath)
-#define ODP_DP_GET _IOWR('O', 2, struct odp_datapath)
-#define ODP_DP_SET _IOWR('O', 3, struct odp_datapath)
-#define ODP_DP_DUMP _IOWR('O', 4, struct odp_datapath)
-
-#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_FLOW_SET _IOWR('O', 16, struct odp_flow)
#define ODP_FLOW_DUMP _IOWR('O', 17, struct odp_flow)
#define ODP_FLOW_FLUSH _IO('O', 19)
-
-#define ODP_EXECUTE _IOR('O', 18, struct odp_upcall)
+\f
+/* Datapaths. */
+
+#define ODP_DATAPATH_FAMILY "odp_datapath"
+#define ODP_DATAPATH_MCGROUP "odp_datapath"
+
+enum odp_datapath_cmd {
+ ODP_DP_CMD_UNSPEC,
+ ODP_DP_CMD_NEW,
+ ODP_DP_CMD_DEL,
+ ODP_DP_CMD_GET,
+ ODP_DP_CMD_SET
+};
/**
- * struct odp_datapath - header with basic information about a datapath.
- * @dp_idx: Datapath index (-1 to make a request not specific to a datapath).
- * @len: Length of this structure plus the Netlink attributes following it.
- * @total_len: Total space available for kernel reply to request.
+ * struct odp_header - header for ODP Generic Netlink messages.
+ * @dp_idx: Number of datapath to which the packet belongs.
*
- * Followed by &struct nlattr attributes, whose types are drawn from
- * %ODP_DP_ATTR_*, up to a length of @len bytes including the &struct
- * odp_datapath header.
+ * Attributes following the header are specific to a particular ODP Generic
+ * Netlink family, but all of the ODP families use this header.
*/
-struct odp_datapath {
- int32_t dp_idx;
- uint32_t len;
- uint32_t total_len;
+struct odp_header {
+ uint32_t dp_idx;
};
-
-enum odp_datapath_type {
+\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
};
#define ODP_DP_ATTR_MAX (__ODP_DP_ATTR_MAX - 1)
-/* Values for ODP_DP_ATTR_IPV4_FRAGS. */
+/**
+ * enum odp_frag_handling - policy for handling received IPv4 fragments.
+ * @ODP_DP_FRAG_ZERO: Treat IP fragments as IP protocol 0 and transport ports
+ * zero.
+ * @ODP_DP_FRAG_DROP: Drop IP fragments. Do not pass them through the flow
+ * table or up to userspace.
+ */
enum odp_frag_handling {
ODP_DP_FRAG_UNSPEC,
ODP_DP_FRAG_ZERO, /* Treat IP fragments as transport port 0. */
/* Logical ports. */
#define ODPP_LOCAL ((uint16_t)0)
-#define ODPP_NONE ((uint16_t)-1)
-
-/* Listening channels. */
-#define _ODPL_MISS_NR 0 /* Packet missed in flow table. */
-#define ODPL_MISS (1 << _ODPL_MISS_NR)
-#define _ODPL_ACTION_NR 1 /* Packet output to ODPP_CONTROLLER. */
-#define ODPL_ACTION (1 << _ODPL_ACTION_NR)
-#define _ODPL_SFLOW_NR 2 /* sFlow samples. */
-#define ODPL_SFLOW (1 << _ODPL_SFLOW_NR)
-#define ODPL_ALL (ODPL_MISS | ODPL_ACTION | ODPL_SFLOW)
-
-enum odp_packet_type {
+\f
+#define ODP_PACKET_FAMILY "odp_packet"
+
+enum odp_packet_cmd {
+ ODP_PACKET_CMD_UNSPEC,
+
+ /* Kernel-to-user notifications. */
+ ODP_PACKET_CMD_MISS, /* Flow table miss. */
+ ODP_PACKET_CMD_ACTION, /* ODPAT_CONTROLLER action. */
+ ODP_PACKET_CMD_SAMPLE, /* Sampled packet. */
+
+ /* User commands. */
+ ODP_PACKET_CMD_EXECUTE /* Apply actions to a packet. */
+};
+
+/**
+ * enum odp_packet_attr - attributes for %ODP_PACKET_* commands.
+ * @ODP_PACKET_ATTR_PACKET: Present for all notifications. Contains the entire
+ * packet as received, from the start of the Ethernet header onward. For
+ * %ODP_PACKET_CMD_ACTION, %ODP_PACKET_ATTR_PACKET reflects changes made by
+ * actions preceding %ODPAT_CONTROLLER, but %ODP_PACKET_ATTR_KEY is the flow
+ * key extracted from the packet as originally received.
+ * @ODP_PACKET_ATTR_KEY: Present for all notifications. Contains the flow key
+ * extracted from the packet as nested %ODP_KEY_ATTR_* attributes. This allows
+ * userspace to adapt its flow setup strategy by comparing its notion of the
+ * flow key against the kernel's.
+ * @ODP_PACKET_ATTR_USERDATA: Present for an %ODP_PACKET_CMD_ACTION
+ * notification if the %ODPAT_CONTROLLER action's argument was nonzero.
+ * @ODP_PACKET_ATTR_SAMPLE_POOL: Present for %ODP_PACKET_CMD_SAMPLE. Contains
+ * the number of packets processed so far that were candidates for sampling.
+ * @ODP_PACKET_ATTR_ACTIONS: Present for %ODP_PACKET_CMD_SAMPLE. Contains a
+ * copy of the actions applied to the packet, as nested %ODPAT_* attributes.
+ *
+ * These attributes follow the &struct odp_header within the Generic Netlink
+ * payload for %ODP_PACKET_* commands.
+ */
+enum odp_packet_attr {
ODP_PACKET_ATTR_UNSPEC,
- ODP_PACKET_ATTR_TYPE, /* 32-bit enum, one of _ODP_*_NR. */
ODP_PACKET_ATTR_PACKET, /* Packet data. */
ODP_PACKET_ATTR_KEY, /* Nested ODP_KEY_ATTR_* attributes. */
ODP_PACKET_ATTR_USERDATA, /* 64-bit data from ODPAT_CONTROLLER. */
};
#define ODP_PACKET_ATTR_MAX (__ODP_PACKET_ATTR_MAX - 1)
-
-/**
- * struct odp_packet - header for packets passed up between kernel and
- * userspace.
- * @dp_idx: Number of datapath to which the packet belongs.
- * @len: Length of complete message, including this header.
- *
- * The header is followed by a sequence of Netlink attributes. The
- * %ODP_PACKET_ATTR_TYPE, %ODP_PACKET_ATTR_PACKET, and %ODP_PACKET_ATTR_KEY
- * attributes are always present. When @type == %_ODPL_ACTION_NR, the
- * %ODP_PACKET_ATTR_USERDATA attribute is included if it would be nonzero.
- * When @type == %_ODPL_SFLOW_NR, the %ODP_PACKET_ATTR_SAMPLE_POOL and
- * %ODP_PACKET_ATTR_ACTIONS attributes are included.
- *
- * For @type of %_ODPL_ACTION_NR, %ODP_PACKET_ATTR_PACKET reflects changes made
- * by actions preceding %ODPAT_CONTROLLER, but %ODP_PACKET_ATTR_KEY is the flow
- * key extracted from the packet as originally received.
- */
-struct odp_packet {
- uint32_t dp_idx;
- uint32_t len;
-};
-
+\f
enum odp_vport_type {
ODP_VPORT_TYPE_UNSPEC,
ODP_VPORT_TYPE_NETDEV, /* network device */
git://git.onelab.eu / sliver-openvswitch.git / blobdiff