/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

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/*

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* Copyright (c) 2007-2017 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 __LINUX_OPENVSWITCH_H

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#define __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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/* V2:

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* - API users are expected to provide OVS_DP_ATTR_USER_FEATURES

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* when creating the datapath.

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*/

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#define OVS_DATAPATH_VERSION 2

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/* First OVS datapath version to support features */

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#define OVS_DP_VER_FEATURES 2

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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_PER_CPU_PIDS: Per-cpu array of PIDs for upcalls when

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* OVS_DP_F_DISPATCH_UPCALL_PER_CPU feature is set.

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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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* @OVS_DP_ATTR_MEGAFLOW_STATS: Statistics about mega flow masks usage for the

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* datapath. Always present in notifications.

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* @OVS_DP_ATTR_IFINDEX: Interface index for a new datapath netdev. Only

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* valid for %OVS_DP_CMD_NEW requests.

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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_MEGAFLOW_STATS, /* struct ovs_dp_megaflow_stats */

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OVS_DP_ATTR_USER_FEATURES, /* OVS_DP_F_* */

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OVS_DP_ATTR_PAD,

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OVS_DP_ATTR_MASKS_CACHE_SIZE,

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OVS_DP_ATTR_PER_CPU_PIDS, /* Netlink PIDS to receive upcalls in

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* per-cpu dispatch mode

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*/

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OVS_DP_ATTR_IFINDEX,

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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_dp_megaflow_stats {

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__u64 n_mask_hit; /* Number of masks used for flow lookups. */

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__u32 n_masks; /* Number of masks for the datapath. */

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__u32 pad0; /* Pad for future expension. */

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__u64 n_cache_hit; /* Number of cache matches for flow lookups. */

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__u64 pad1; /* Pad for future expension. */

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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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/* Allow last Netlink attribute to be unaligned */

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#define OVS_DP_F_UNALIGNED (1 << 0)

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/* Allow datapath to associate multiple Netlink PIDs to each vport */

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#define OVS_DP_F_VPORT_PIDS (1 << 1)

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/* Allow tc offload recirc sharing */

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#define OVS_DP_F_TC_RECIRC_SHARING (1 << 2)

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/* Allow per-cpu dispatch of upcalls */

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#define OVS_DP_F_DISPATCH_UPCALL_PER_CPU (1 << 3)

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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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* Also used in upcall when %OVS_ACTION_ATTR_USERSPACE has optional

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* %OVS_USERSPACE_ATTR_ACTIONS attribute.

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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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* @OVS_PACKET_ATTR_EGRESS_TUN_KEY: 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_EGRESS_TUN_PORT attribute, which is sent only if the

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* output port is actually a tunnel port. Contains the output tunnel key

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* extracted from the packet as nested %OVS_TUNNEL_KEY_ATTR_* attributes.

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* @OVS_PACKET_ATTR_MRU: Present for an %OVS_PACKET_CMD_ACTION and

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* @OVS_PACKET_ATTR_LEN: Packet size before truncation.

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* %OVS_PACKET_ATTR_USERSPACE action specify the Maximum received fragment

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* size.

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* @OVS_PACKET_ATTR_HASH: Packet hash info (e.g. hash, sw_hash and l4_hash in skb).

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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_EGRESS_TUN_KEY, /* Nested OVS_TUNNEL_KEY_ATTR_*

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attributes. */

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OVS_PACKET_ATTR_UNUSED1,

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OVS_PACKET_ATTR_UNUSED2,

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OVS_PACKET_ATTR_PROBE, /* Packet operation is a feature probe,

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error logging should be suppressed. */

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OVS_PACKET_ATTR_MRU, /* Maximum received IP fragment size. */

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OVS_PACKET_ATTR_LEN, /* Packet size before truncation. */

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OVS_PACKET_ATTR_HASH, /* Packet hash. */

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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_GENEVE, /* Geneve 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 array of Netlink socket pids in userspace

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* among which OVS_PACKET_CMD_MISS upcalls will be distributed for packets

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* received on this port. If this is a single-element array of value 0,

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* 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, /* array of u32 Netlink socket PIDs for */

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/* receiving upcalls */

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OVS_VPORT_ATTR_STATS, /* struct ovs_vport_stats */

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OVS_VPORT_ATTR_PAD,

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OVS_VPORT_ATTR_IFINDEX,

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OVS_VPORT_ATTR_NETNSID,

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OVS_VPORT_ATTR_UPCALL_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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/**

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* enum ovs_vport_upcall_attr - attributes for %OVS_VPORT_UPCALL* commands

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* @OVS_VPORT_UPCALL_SUCCESS: 64-bit upcall success packets.

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* @OVS_VPORT_UPCALL_FAIL: 64-bit upcall fail packets.

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*/

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enum ovs_vport_upcall_attr {

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OVS_VPORT_UPCALL_ATTR_SUCCESS,

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OVS_VPORT_UPCALL_ATTR_FAIL,

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__OVS_VPORT_UPCALL_ATTR_MAX

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};

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#define OVS_VPORT_UPCALL_ATTR_MAX (__OVS_VPORT_UPCALL_ATTR_MAX - 1)

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enum {

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OVS_VXLAN_EXT_UNSPEC,

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OVS_VXLAN_EXT_GBP, /* Flag or __u32 */

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__OVS_VXLAN_EXT_MAX,

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};

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#define OVS_VXLAN_EXT_MAX (__OVS_VXLAN_EXT_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_EXTENSION,

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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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OVS_KEY_ATTR_TCP_FLAGS, /* be16 TCP flags. */

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OVS_KEY_ATTR_DP_HASH, /* u32 hash value. Value 0 indicates the hash

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is not computed by the datapath. */

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OVS_KEY_ATTR_RECIRC_ID, /* u32 recirc id */

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OVS_KEY_ATTR_MPLS, /* array of struct ovs_key_mpls.

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* The implementation may restrict

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* the accepted length of the array. */

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OVS_KEY_ATTR_CT_STATE, /* u32 bitmask of OVS_CS_F_* */

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OVS_KEY_ATTR_CT_ZONE, /* u16 connection tracking zone. */

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OVS_KEY_ATTR_CT_MARK, /* u32 connection tracking mark */

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OVS_KEY_ATTR_CT_LABELS, /* 16-octet connection tracking label */

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OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4, /* struct ovs_key_ct_tuple_ipv4 */

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OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6, /* struct ovs_key_ct_tuple_ipv6 */

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OVS_KEY_ATTR_NSH, /* Nested set of ovs_nsh_key_* */

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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_NONE, standard nl API requires this attribute! */

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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_OAM, /* No argument. OAM frame. */

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OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS, /* Array of Geneve options. */

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OVS_TUNNEL_KEY_ATTR_TP_SRC, /* be16 src Transport Port. */

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OVS_TUNNEL_KEY_ATTR_TP_DST, /* be16 dst Transport Port. */

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OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS, /* Nested OVS_VXLAN_EXT_* */

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OVS_TUNNEL_KEY_ATTR_IPV6_SRC, /* struct in6_addr src IPv6 address. */

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OVS_TUNNEL_KEY_ATTR_IPV6_DST, /* struct in6_addr dst IPv6 address. */

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OVS_TUNNEL_KEY_ATTR_PAD,

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OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS, /* struct erspan_metadata */

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OVS_TUNNEL_KEY_ATTR_IPV4_INFO_BRIDGE, /* No argument. IPV4_INFO_BRIDGE mode.*/

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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_mpls {

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__be32 mpls_lse;

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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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__be32 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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#define OVS_CT_LABELS_LEN_32 4

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#define OVS_CT_LABELS_LEN (OVS_CT_LABELS_LEN_32 * sizeof(__u32))

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struct ovs_key_ct_labels {

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union {

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__u8 ct_labels[OVS_CT_LABELS_LEN];

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__u32 ct_labels_32[OVS_CT_LABELS_LEN_32];

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};

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};

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/* OVS_KEY_ATTR_CT_STATE flags */

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#define OVS_CS_F_NEW 0x01 /* Beginning of a new connection. */

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#define OVS_CS_F_ESTABLISHED 0x02 /* Part of an existing connection. */

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#define OVS_CS_F_RELATED 0x04 /* Related to an established

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* connection. */

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#define OVS_CS_F_REPLY_DIR 0x08 /* Flow is in the reply direction. */

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