499 lines
17 KiB
C
499 lines
17 KiB
C
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/*
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* Copyright (c) 2007-2013 Nicira, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA
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*/
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#ifndef _UAPI__LINUX_OPENVSWITCH_H
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#define _UAPI__LINUX_OPENVSWITCH_H 1
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#include <linux/types.h>
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#include <linux/if_ether.h>
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/**
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* struct ovs_header - header for OVS Generic Netlink messages.
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* @dp_ifindex: ifindex of local port for datapath (0 to make a request not
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* specific to a datapath).
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*
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* Attributes following the header are specific to a particular OVS Generic
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* Netlink family, but all of the OVS families use this header.
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*/
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struct ovs_header {
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int dp_ifindex;
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};
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/* Datapaths. */
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#define OVS_DATAPATH_FAMILY "ovs_datapath"
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#define OVS_DATAPATH_MCGROUP "ovs_datapath"
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#define OVS_DATAPATH_VERSION 0x1
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enum ovs_datapath_cmd {
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OVS_DP_CMD_UNSPEC,
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OVS_DP_CMD_NEW,
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OVS_DP_CMD_DEL,
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OVS_DP_CMD_GET,
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OVS_DP_CMD_SET
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};
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/**
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* enum ovs_datapath_attr - attributes for %OVS_DP_* commands.
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* @OVS_DP_ATTR_NAME: Name of the network device that serves as the "local
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* port". This is the name of the network device whose dp_ifindex is given in
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* the &struct ovs_header. Always present in notifications. Required in
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* %OVS_DP_NEW requests. May be used as an alternative to specifying
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* dp_ifindex in other requests (with a dp_ifindex of 0).
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* @OVS_DP_ATTR_UPCALL_PID: The Netlink socket in userspace that is initially
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* set on the datapath port (for OVS_ACTION_ATTR_MISS). Only valid on
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* %OVS_DP_CMD_NEW requests. A value of zero indicates that upcalls should
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* not be sent.
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* @OVS_DP_ATTR_STATS: Statistics about packets that have passed through the
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* datapath. Always present in notifications.
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*
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* These attributes follow the &struct ovs_header within the Generic Netlink
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* payload for %OVS_DP_* commands.
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*/
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enum ovs_datapath_attr {
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OVS_DP_ATTR_UNSPEC,
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OVS_DP_ATTR_NAME, /* name of dp_ifindex netdev */
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OVS_DP_ATTR_UPCALL_PID, /* Netlink PID to receive upcalls */
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OVS_DP_ATTR_STATS, /* struct ovs_dp_stats */
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__OVS_DP_ATTR_MAX
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};
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#define OVS_DP_ATTR_MAX (__OVS_DP_ATTR_MAX - 1)
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struct ovs_dp_stats {
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__u64 n_hit; /* Number of flow table matches. */
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__u64 n_missed; /* Number of flow table misses. */
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__u64 n_lost; /* Number of misses not sent to userspace. */
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__u64 n_flows; /* Number of flows present */
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};
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struct ovs_vport_stats {
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__u64 rx_packets; /* total packets received */
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__u64 tx_packets; /* total packets transmitted */
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__u64 rx_bytes; /* total bytes received */
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__u64 tx_bytes; /* total bytes transmitted */
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__u64 rx_errors; /* bad packets received */
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__u64 tx_errors; /* packet transmit problems */
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__u64 rx_dropped; /* no space in linux buffers */
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__u64 tx_dropped; /* no space available in linux */
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};
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/* Fixed logical ports. */
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#define OVSP_LOCAL ((__u32)0)
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/* Packet transfer. */
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#define OVS_PACKET_FAMILY "ovs_packet"
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#define OVS_PACKET_VERSION 0x1
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enum ovs_packet_cmd {
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OVS_PACKET_CMD_UNSPEC,
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/* Kernel-to-user notifications. */
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OVS_PACKET_CMD_MISS, /* Flow table miss. */
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OVS_PACKET_CMD_ACTION, /* OVS_ACTION_ATTR_USERSPACE action. */
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/* Userspace commands. */
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OVS_PACKET_CMD_EXECUTE /* Apply actions to a packet. */
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};
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/**
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* enum ovs_packet_attr - attributes for %OVS_PACKET_* commands.
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* @OVS_PACKET_ATTR_PACKET: Present for all notifications. Contains the entire
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* packet as received, from the start of the Ethernet header onward. For
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* %OVS_PACKET_CMD_ACTION, %OVS_PACKET_ATTR_PACKET reflects changes made by
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* actions preceding %OVS_ACTION_ATTR_USERSPACE, but %OVS_PACKET_ATTR_KEY is
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* the flow key extracted from the packet as originally received.
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* @OVS_PACKET_ATTR_KEY: Present for all notifications. Contains the flow key
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* extracted from the packet as nested %OVS_KEY_ATTR_* attributes. This allows
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* userspace to adapt its flow setup strategy by comparing its notion of the
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* flow key against the kernel's.
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* @OVS_PACKET_ATTR_ACTIONS: Contains actions for the packet. Used
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* for %OVS_PACKET_CMD_EXECUTE. It has nested %OVS_ACTION_ATTR_* attributes.
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* @OVS_PACKET_ATTR_USERDATA: Present for an %OVS_PACKET_CMD_ACTION
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* notification if the %OVS_ACTION_ATTR_USERSPACE action specified an
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* %OVS_USERSPACE_ATTR_USERDATA attribute, with the same length and content
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* specified there.
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*
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* These attributes follow the &struct ovs_header within the Generic Netlink
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* payload for %OVS_PACKET_* commands.
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*/
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enum ovs_packet_attr {
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OVS_PACKET_ATTR_UNSPEC,
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OVS_PACKET_ATTR_PACKET, /* Packet data. */
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OVS_PACKET_ATTR_KEY, /* Nested OVS_KEY_ATTR_* attributes. */
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OVS_PACKET_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
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OVS_PACKET_ATTR_USERDATA, /* OVS_ACTION_ATTR_USERSPACE arg. */
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__OVS_PACKET_ATTR_MAX
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};
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#define OVS_PACKET_ATTR_MAX (__OVS_PACKET_ATTR_MAX - 1)
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/* Virtual ports. */
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#define OVS_VPORT_FAMILY "ovs_vport"
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#define OVS_VPORT_MCGROUP "ovs_vport"
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#define OVS_VPORT_VERSION 0x1
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enum ovs_vport_cmd {
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OVS_VPORT_CMD_UNSPEC,
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OVS_VPORT_CMD_NEW,
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OVS_VPORT_CMD_DEL,
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OVS_VPORT_CMD_GET,
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OVS_VPORT_CMD_SET
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};
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enum ovs_vport_type {
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OVS_VPORT_TYPE_UNSPEC,
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OVS_VPORT_TYPE_NETDEV, /* network device */
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OVS_VPORT_TYPE_INTERNAL, /* network device implemented by datapath */
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OVS_VPORT_TYPE_GRE, /* GRE tunnel. */
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OVS_VPORT_TYPE_VXLAN, /* VXLAN tunnel. */
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__OVS_VPORT_TYPE_MAX
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};
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#define OVS_VPORT_TYPE_MAX (__OVS_VPORT_TYPE_MAX - 1)
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/**
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* enum ovs_vport_attr - attributes for %OVS_VPORT_* commands.
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* @OVS_VPORT_ATTR_PORT_NO: 32-bit port number within datapath.
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* @OVS_VPORT_ATTR_TYPE: 32-bit %OVS_VPORT_TYPE_* constant describing the type
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* of vport.
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* @OVS_VPORT_ATTR_NAME: Name of vport. For a vport based on a network device
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* this is the name of the network device. Maximum length %IFNAMSIZ-1 bytes
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* plus a null terminator.
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* @OVS_VPORT_ATTR_OPTIONS: Vport-specific configuration information.
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* @OVS_VPORT_ATTR_UPCALL_PID: The Netlink socket in userspace that
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* OVS_PACKET_CMD_MISS upcalls will be directed to for packets received on
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* this port. A value of zero indicates that upcalls should not be sent.
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* @OVS_VPORT_ATTR_STATS: A &struct ovs_vport_stats giving statistics for
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* packets sent or received through the vport.
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*
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* These attributes follow the &struct ovs_header within the Generic Netlink
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* payload for %OVS_VPORT_* commands.
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*
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* For %OVS_VPORT_CMD_NEW requests, the %OVS_VPORT_ATTR_TYPE and
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* %OVS_VPORT_ATTR_NAME attributes are required. %OVS_VPORT_ATTR_PORT_NO is
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* optional; if not specified a free port number is automatically selected.
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* Whether %OVS_VPORT_ATTR_OPTIONS is required or optional depends on the type
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* of vport.
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*
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* For other requests, if %OVS_VPORT_ATTR_NAME is specified then it is used to
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* look up the vport to operate on; otherwise dp_idx from the &struct
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* ovs_header plus %OVS_VPORT_ATTR_PORT_NO determine the vport.
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*/
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enum ovs_vport_attr {
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OVS_VPORT_ATTR_UNSPEC,
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OVS_VPORT_ATTR_PORT_NO, /* u32 port number within datapath */
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OVS_VPORT_ATTR_TYPE, /* u32 OVS_VPORT_TYPE_* constant. */
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OVS_VPORT_ATTR_NAME, /* string name, up to IFNAMSIZ bytes long */
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OVS_VPORT_ATTR_OPTIONS, /* nested attributes, varies by vport type */
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OVS_VPORT_ATTR_UPCALL_PID, /* u32 Netlink PID to receive upcalls */
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OVS_VPORT_ATTR_STATS, /* struct ovs_vport_stats */
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__OVS_VPORT_ATTR_MAX
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};
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#define OVS_VPORT_ATTR_MAX (__OVS_VPORT_ATTR_MAX - 1)
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/* OVS_VPORT_ATTR_OPTIONS attributes for tunnels.
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*/
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enum {
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OVS_TUNNEL_ATTR_UNSPEC,
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OVS_TUNNEL_ATTR_DST_PORT, /* 16-bit UDP port, used by L4 tunnels. */
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__OVS_TUNNEL_ATTR_MAX
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};
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#define OVS_TUNNEL_ATTR_MAX (__OVS_TUNNEL_ATTR_MAX - 1)
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/* Flows. */
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#define OVS_FLOW_FAMILY "ovs_flow"
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#define OVS_FLOW_MCGROUP "ovs_flow"
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#define OVS_FLOW_VERSION 0x1
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enum ovs_flow_cmd {
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OVS_FLOW_CMD_UNSPEC,
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OVS_FLOW_CMD_NEW,
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OVS_FLOW_CMD_DEL,
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OVS_FLOW_CMD_GET,
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OVS_FLOW_CMD_SET
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};
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struct ovs_flow_stats {
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__u64 n_packets; /* Number of matched packets. */
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__u64 n_bytes; /* Number of matched bytes. */
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};
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enum ovs_key_attr {
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OVS_KEY_ATTR_UNSPEC,
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OVS_KEY_ATTR_ENCAP, /* Nested set of encapsulated attributes. */
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OVS_KEY_ATTR_PRIORITY, /* u32 skb->priority */
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OVS_KEY_ATTR_IN_PORT, /* u32 OVS dp port number */
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OVS_KEY_ATTR_ETHERNET, /* struct ovs_key_ethernet */
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OVS_KEY_ATTR_VLAN, /* be16 VLAN TCI */
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OVS_KEY_ATTR_ETHERTYPE, /* be16 Ethernet type */
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OVS_KEY_ATTR_IPV4, /* struct ovs_key_ipv4 */
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OVS_KEY_ATTR_IPV6, /* struct ovs_key_ipv6 */
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OVS_KEY_ATTR_TCP, /* struct ovs_key_tcp */
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OVS_KEY_ATTR_UDP, /* struct ovs_key_udp */
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OVS_KEY_ATTR_ICMP, /* struct ovs_key_icmp */
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OVS_KEY_ATTR_ICMPV6, /* struct ovs_key_icmpv6 */
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OVS_KEY_ATTR_ARP, /* struct ovs_key_arp */
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OVS_KEY_ATTR_ND, /* struct ovs_key_nd */
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OVS_KEY_ATTR_SKB_MARK, /* u32 skb mark */
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OVS_KEY_ATTR_TUNNEL, /* Nested set of ovs_tunnel attributes */
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OVS_KEY_ATTR_SCTP, /* struct ovs_key_sctp */
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#ifdef __KERNEL__
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OVS_KEY_ATTR_IPV4_TUNNEL, /* struct ovs_key_ipv4_tunnel */
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#endif
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__OVS_KEY_ATTR_MAX
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};
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#define OVS_KEY_ATTR_MAX (__OVS_KEY_ATTR_MAX - 1)
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enum ovs_tunnel_key_attr {
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OVS_TUNNEL_KEY_ATTR_ID, /* be64 Tunnel ID */
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OVS_TUNNEL_KEY_ATTR_IPV4_SRC, /* be32 src IP address. */
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OVS_TUNNEL_KEY_ATTR_IPV4_DST, /* be32 dst IP address. */
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OVS_TUNNEL_KEY_ATTR_TOS, /* u8 Tunnel IP ToS. */
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OVS_TUNNEL_KEY_ATTR_TTL, /* u8 Tunnel IP TTL. */
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OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT, /* No argument, set DF. */
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OVS_TUNNEL_KEY_ATTR_CSUM, /* No argument. CSUM packet. */
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__OVS_TUNNEL_KEY_ATTR_MAX
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};
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#define OVS_TUNNEL_KEY_ATTR_MAX (__OVS_TUNNEL_KEY_ATTR_MAX - 1)
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/**
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* enum ovs_frag_type - IPv4 and IPv6 fragment type
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* @OVS_FRAG_TYPE_NONE: Packet is not a fragment.
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* @OVS_FRAG_TYPE_FIRST: Packet is a fragment with offset 0.
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* @OVS_FRAG_TYPE_LATER: Packet is a fragment with nonzero offset.
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*
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* Used as the @ipv4_frag in &struct ovs_key_ipv4 and as @ipv6_frag &struct
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* ovs_key_ipv6.
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*/
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enum ovs_frag_type {
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OVS_FRAG_TYPE_NONE,
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OVS_FRAG_TYPE_FIRST,
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OVS_FRAG_TYPE_LATER,
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__OVS_FRAG_TYPE_MAX
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};
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#define OVS_FRAG_TYPE_MAX (__OVS_FRAG_TYPE_MAX - 1)
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struct ovs_key_ethernet {
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__u8 eth_src[ETH_ALEN];
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__u8 eth_dst[ETH_ALEN];
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};
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struct ovs_key_ipv4 {
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__be32 ipv4_src;
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__be32 ipv4_dst;
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__u8 ipv4_proto;
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__u8 ipv4_tos;
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__u8 ipv4_ttl;
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__u8 ipv4_frag; /* One of OVS_FRAG_TYPE_*. */
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};
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struct ovs_key_ipv6 {
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__be32 ipv6_src[4];
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__be32 ipv6_dst[4];
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__be32 ipv6_label; /* 20-bits in least-significant bits. */
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__u8 ipv6_proto;
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__u8 ipv6_tclass;
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__u8 ipv6_hlimit;
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__u8 ipv6_frag; /* One of OVS_FRAG_TYPE_*. */
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};
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struct ovs_key_tcp {
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__be16 tcp_src;
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__be16 tcp_dst;
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};
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struct ovs_key_udp {
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__be16 udp_src;
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__be16 udp_dst;
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};
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struct ovs_key_sctp {
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__be16 sctp_src;
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__be16 sctp_dst;
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};
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struct ovs_key_icmp {
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__u8 icmp_type;
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__u8 icmp_code;
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};
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struct ovs_key_icmpv6 {
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__u8 icmpv6_type;
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__u8 icmpv6_code;
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};
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struct ovs_key_arp {
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__be32 arp_sip;
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__be32 arp_tip;
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__be16 arp_op;
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__u8 arp_sha[ETH_ALEN];
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__u8 arp_tha[ETH_ALEN];
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};
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struct ovs_key_nd {
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__u32 nd_target[4];
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__u8 nd_sll[ETH_ALEN];
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__u8 nd_tll[ETH_ALEN];
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};
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/**
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* enum ovs_flow_attr - attributes for %OVS_FLOW_* commands.
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* @OVS_FLOW_ATTR_KEY: Nested %OVS_KEY_ATTR_* attributes specifying the flow
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* key. Always present in notifications. Required for all requests (except
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* dumps).
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* @OVS_FLOW_ATTR_ACTIONS: Nested %OVS_ACTION_ATTR_* attributes specifying
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* the actions to take for packets that match the key. Always present in
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* notifications. Required for %OVS_FLOW_CMD_NEW requests, optional for
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* %OVS_FLOW_CMD_SET requests.
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* @OVS_FLOW_ATTR_STATS: &struct ovs_flow_stats giving statistics for this
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* flow. Present in notifications if the stats would be nonzero. Ignored in
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* requests.
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* @OVS_FLOW_ATTR_TCP_FLAGS: An 8-bit value giving the OR'd value of all of the
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* TCP flags seen on packets in this flow. Only present in notifications for
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* TCP flows, and only if it would be nonzero. Ignored in requests.
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* @OVS_FLOW_ATTR_USED: A 64-bit integer giving the time, in milliseconds on
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* the system monotonic clock, at which a packet was last processed for this
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* flow. Only present in notifications if a packet has been processed for this
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* flow. Ignored in requests.
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* @OVS_FLOW_ATTR_CLEAR: If present in a %OVS_FLOW_CMD_SET request, clears the
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* last-used time, accumulated TCP flags, and statistics for this flow.
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* Otherwise ignored in requests. Never present in notifications.
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* @OVS_FLOW_ATTR_MASK: Nested %OVS_KEY_ATTR_* attributes specifying the
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* mask bits for wildcarded flow match. Mask bit value '1' specifies exact
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* match with corresponding flow key bit, while mask bit value '0' specifies
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* a wildcarded match. Omitting attribute is treated as wildcarding all
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* corresponding fields. Optional for all requests. If not present,
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* all flow key bits are exact match bits.
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*
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* These attributes follow the &struct ovs_header within the Generic Netlink
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* payload for %OVS_FLOW_* commands.
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*/
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enum ovs_flow_attr {
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OVS_FLOW_ATTR_UNSPEC,
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OVS_FLOW_ATTR_KEY, /* Sequence of OVS_KEY_ATTR_* attributes. */
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OVS_FLOW_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
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OVS_FLOW_ATTR_STATS, /* struct ovs_flow_stats. */
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OVS_FLOW_ATTR_TCP_FLAGS, /* 8-bit OR'd TCP flags. */
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OVS_FLOW_ATTR_USED, /* u64 msecs last used in monotonic time. */
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OVS_FLOW_ATTR_CLEAR, /* Flag to clear stats, tcp_flags, used. */
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OVS_FLOW_ATTR_MASK, /* Sequence of OVS_KEY_ATTR_* attributes. */
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__OVS_FLOW_ATTR_MAX
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};
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#define OVS_FLOW_ATTR_MAX (__OVS_FLOW_ATTR_MAX - 1)
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/**
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* enum ovs_sample_attr - Attributes for %OVS_ACTION_ATTR_SAMPLE action.
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* @OVS_SAMPLE_ATTR_PROBABILITY: 32-bit fraction of packets to sample with
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* @OVS_ACTION_ATTR_SAMPLE. A value of 0 samples no packets, a value of
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* %UINT32_MAX samples all packets and intermediate values sample intermediate
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* fractions of packets.
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* @OVS_SAMPLE_ATTR_ACTIONS: Set of actions to execute in sampling event.
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* Actions are passed as nested attributes.
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*
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* Executes the specified actions with the given probability on a per-packet
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* basis.
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*/
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enum ovs_sample_attr {
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OVS_SAMPLE_ATTR_UNSPEC,
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OVS_SAMPLE_ATTR_PROBABILITY, /* u32 number */
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OVS_SAMPLE_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
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|
__OVS_SAMPLE_ATTR_MAX,
|
|
};
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|
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#define OVS_SAMPLE_ATTR_MAX (__OVS_SAMPLE_ATTR_MAX - 1)
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|
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/**
|
|
* enum ovs_userspace_attr - Attributes for %OVS_ACTION_ATTR_USERSPACE action.
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* @OVS_USERSPACE_ATTR_PID: u32 Netlink PID to which the %OVS_PACKET_CMD_ACTION
|
|
* message should be sent. Required.
|
|
* @OVS_USERSPACE_ATTR_USERDATA: If present, its variable-length argument is
|
|
* copied to the %OVS_PACKET_CMD_ACTION message as %OVS_PACKET_ATTR_USERDATA.
|
|
*/
|
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enum ovs_userspace_attr {
|
|
OVS_USERSPACE_ATTR_UNSPEC,
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|
OVS_USERSPACE_ATTR_PID, /* u32 Netlink PID to receive upcalls. */
|
|
OVS_USERSPACE_ATTR_USERDATA, /* Optional user-specified cookie. */
|
|
__OVS_USERSPACE_ATTR_MAX
|
|
};
|
|
|
|
#define OVS_USERSPACE_ATTR_MAX (__OVS_USERSPACE_ATTR_MAX - 1)
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|
|
|
/**
|
|
* struct ovs_action_push_vlan - %OVS_ACTION_ATTR_PUSH_VLAN action argument.
|
|
* @vlan_tpid: Tag protocol identifier (TPID) to push.
|
|
* @vlan_tci: Tag control identifier (TCI) to push. The CFI bit must be set
|
|
* (but it will not be set in the 802.1Q header that is pushed).
|
|
*
|
|
* The @vlan_tpid value is typically %ETH_P_8021Q. The only acceptable TPID
|
|
* values are those that the kernel module also parses as 802.1Q headers, to
|
|
* prevent %OVS_ACTION_ATTR_PUSH_VLAN followed by %OVS_ACTION_ATTR_POP_VLAN
|
|
* from having surprising results.
|
|
*/
|
|
struct ovs_action_push_vlan {
|
|
__be16 vlan_tpid; /* 802.1Q TPID. */
|
|
__be16 vlan_tci; /* 802.1Q TCI (VLAN ID and priority). */
|
|
};
|
|
|
|
/**
|
|
* enum ovs_action_attr - Action types.
|
|
*
|
|
* @OVS_ACTION_ATTR_OUTPUT: Output packet to port.
|
|
* @OVS_ACTION_ATTR_USERSPACE: Send packet to userspace according to nested
|
|
* %OVS_USERSPACE_ATTR_* attributes.
|
|
* @OVS_ACTION_ATTR_SET: Replaces the contents of an existing header. The
|
|
* single nested %OVS_KEY_ATTR_* attribute specifies a header to modify and its
|
|
* value.
|
|
* @OVS_ACTION_ATTR_PUSH_VLAN: Push a new outermost 802.1Q header onto the
|
|
* packet.
|
|
* @OVS_ACTION_ATTR_POP_VLAN: Pop the outermost 802.1Q header off the packet.
|
|
* @OVS_ACTION_ATTR_SAMPLE: Probabilitically executes actions, as specified in
|
|
* the nested %OVS_SAMPLE_ATTR_* attributes.
|
|
*
|
|
* Only a single header can be set with a single %OVS_ACTION_ATTR_SET. Not all
|
|
* fields within a header are modifiable, e.g. the IPv4 protocol and fragment
|
|
* type may not be changed.
|
|
*/
|
|
|
|
enum ovs_action_attr {
|
|
OVS_ACTION_ATTR_UNSPEC,
|
|
OVS_ACTION_ATTR_OUTPUT, /* u32 port number. */
|
|
OVS_ACTION_ATTR_USERSPACE, /* Nested OVS_USERSPACE_ATTR_*. */
|
|
OVS_ACTION_ATTR_SET, /* One nested OVS_KEY_ATTR_*. */
|
|
OVS_ACTION_ATTR_PUSH_VLAN, /* struct ovs_action_push_vlan. */
|
|
OVS_ACTION_ATTR_POP_VLAN, /* No argument. */
|
|
OVS_ACTION_ATTR_SAMPLE, /* Nested OVS_SAMPLE_ATTR_*. */
|
|
__OVS_ACTION_ATTR_MAX
|
|
};
|
|
|
|
#define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1)
|
|
|
|
#endif /* _LINUX_OPENVSWITCH_H */
|