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/*

 * Copyright (c) 2007-2013 Nicira, Inc.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of version 2 of the GNU General Public

 * License as published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful, but

 * WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

 * General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

 * 02110-1301, USA

 */

#ifndef __LINUX_OPENVSWITCH_H

#define __LINUX_OPENVSWITCH_H 1

#include <linux/types.h>

#include <linux/if_ether.h>

/**

 * struct ovs_header - header for OVS Generic Netlink messages.

 * @dp_ifindex: ifindex of local port for datapath (0 to make a request not

 * specific to a datapath).

 *

 * Attributes following the header are specific to a particular OVS Generic

 * Netlink family, but all of the OVS families use this header.

 */

struct ovs_header {

        int dp_ifindex;

};

/* Datapaths. */

#define OVS_DATAPATH_FAMILY  "ovs_datapath"

#define OVS_DATAPATH_MCGROUP "ovs_datapath"

/* V2:

 *   - API users are expected to provide OVS_DP_ATTR_USER_FEATURES

 *     when creating the datapath.

 */

#define OVS_DATAPATH_VERSION 2

/* First OVS datapath version to support features */

#define OVS_DP_VER_FEATURES 2

enum ovs_datapath_cmd {

        OVS_DP_CMD_UNSPEC,

        OVS_DP_CMD_NEW,

        OVS_DP_CMD_DEL,

        OVS_DP_CMD_GET,

        OVS_DP_CMD_SET

};

/**

 * enum ovs_datapath_attr - attributes for %OVS_DP_* commands.

 * @OVS_DP_ATTR_NAME: Name of the network device that serves as the "local

 * port".  This is the name of the network device whose dp_ifindex is given in

 * the &struct ovs_header.  Always present in notifications.  Required in

 * %OVS_DP_NEW requests.  May be used as an alternative to specifying

 * dp_ifindex in other requests (with a dp_ifindex of 0).

 * @OVS_DP_ATTR_UPCALL_PID: The Netlink socket in userspace that is initially

 * set on the datapath port (for OVS_ACTION_ATTR_MISS).  Only valid on

 * %OVS_DP_CMD_NEW requests. A value of zero indicates that upcalls should

 * not be sent.

 * @OVS_DP_ATTR_STATS: Statistics about packets that have passed through the

 * datapath.  Always present in notifications.

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

 * datapath. Always present in notifications.

 *

 * These attributes follow the &struct ovs_header within the Generic Netlink

 * payload for %OVS_DP_* commands.

 */

enum ovs_datapath_attr {

        OVS_DP_ATTR_UNSPEC,

        OVS_DP_ATTR_NAME,               /* name of dp_ifindex netdev */

        OVS_DP_ATTR_UPCALL_PID,         /* Netlink PID to receive upcalls */

        OVS_DP_ATTR_STATS,              /* struct ovs_dp_stats */

        OVS_DP_ATTR_MEGAFLOW_STATS,     /* struct ovs_dp_megaflow_stats */

        OVS_DP_ATTR_USER_FEATURES,      /* OVS_DP_F_*  */

        __OVS_DP_ATTR_MAX

};

#define OVS_DP_ATTR_MAX (__OVS_DP_ATTR_MAX - 1)

struct ovs_dp_stats {

        __u64 n_hit;             /* Number of flow table matches. */

        __u64 n_missed;          /* Number of flow table misses. */

        __u64 n_lost;            /* Number of misses not sent to userspace. */

        __u64 n_flows;           /* Number of flows present */

};

struct ovs_dp_megaflow_stats {

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

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

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

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

        __u64 pad2;              /* Pad for future expension. */

};

struct ovs_vport_stats {

        __u64   rx_packets;             /* total packets received       */

        __u64   tx_packets;             /* total packets transmitted    */

        __u64   rx_bytes;               /* total bytes received         */

        __u64   tx_bytes;               /* total bytes transmitted      */

        __u64   rx_errors;              /* bad packets received         */

        __u64   tx_errors;              /* packet transmit problems     */

        __u64   rx_dropped;             /* no space in linux buffers    */

        __u64   tx_dropped;             /* no space available in linux  */

};

/* Allow last Netlink attribute to be unaligned */

#define OVS_DP_F_UNALIGNED      (1 << 0)

/* Fixed logical ports. */

#define OVSP_LOCAL      ((__u32)0)

/* Packet transfer. */

#define OVS_PACKET_FAMILY "ovs_packet"

#define OVS_PACKET_VERSION 0x1

enum ovs_packet_cmd {

        OVS_PACKET_CMD_UNSPEC,

        /* Kernel-to-user notifications. */

        OVS_PACKET_CMD_MISS,    /* Flow table miss. */

        OVS_PACKET_CMD_ACTION,  /* OVS_ACTION_ATTR_USERSPACE action. */

        /* Userspace commands. */

        OVS_PACKET_CMD_EXECUTE  /* Apply actions to a packet. */

};

/**

 * enum ovs_packet_attr - attributes for %OVS_PACKET_* commands.

 * @OVS_PACKET_ATTR_PACKET: Present for all notifications.  Contains the entire

 * packet as received, from the start of the Ethernet header onward.  For

 * %OVS_PACKET_CMD_ACTION, %OVS_PACKET_ATTR_PACKET reflects changes made by

 * actions preceding %OVS_ACTION_ATTR_USERSPACE, but %OVS_PACKET_ATTR_KEY is

 * the flow key extracted from the packet as originally received.

 * @OVS_PACKET_ATTR_KEY: Present for all notifications.  Contains the flow key

 * extracted from the packet as nested %OVS_KEY_ATTR_* attributes.  This allows

 * userspace to adapt its flow setup strategy by comparing its notion of the

 * flow key against the kernel's.

 * @OVS_PACKET_ATTR_ACTIONS: Contains actions for the packet.  Used

 * for %OVS_PACKET_CMD_EXECUTE.  It has nested %OVS_ACTION_ATTR_* attributes.

 * @OVS_PACKET_ATTR_USERDATA: Present for an %OVS_PACKET_CMD_ACTION

 * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an

 * %OVS_USERSPACE_ATTR_USERDATA attribute, with the same length and content

 * specified there.

 *

 * These attributes follow the &struct ovs_header within the Generic Netlink

 * payload for %OVS_PACKET_* commands.

 */

enum ovs_packet_attr {

        OVS_PACKET_ATTR_UNSPEC,

        OVS_PACKET_ATTR_PACKET,      /* Packet data. */

        OVS_PACKET_ATTR_KEY,         /* Nested OVS_KEY_ATTR_* attributes. */

        OVS_PACKET_ATTR_ACTIONS,     /* Nested OVS_ACTION_ATTR_* attributes. */

        OVS_PACKET_ATTR_USERDATA,    /* OVS_ACTION_ATTR_USERSPACE arg. */

        __OVS_PACKET_ATTR_MAX

};

#define OVS_PACKET_ATTR_MAX (__OVS_PACKET_ATTR_MAX - 1)

/* Virtual ports. */

#define OVS_VPORT_FAMILY  "ovs_vport"

#define OVS_VPORT_MCGROUP "ovs_vport"

#define OVS_VPORT_VERSION 0x1

enum ovs_vport_cmd {

        OVS_VPORT_CMD_UNSPEC,

        OVS_VPORT_CMD_NEW,

        OVS_VPORT_CMD_DEL,

        OVS_VPORT_CMD_GET,

        OVS_VPORT_CMD_SET

};

enum ovs_vport_type {

        OVS_VPORT_TYPE_UNSPEC,

        OVS_VPORT_TYPE_NETDEV,   /* network device */

        OVS_VPORT_TYPE_INTERNAL, /* network device implemented by datapath */

        OVS_VPORT_TYPE_GRE,      /* GRE tunnel. */

        OVS_VPORT_TYPE_VXLAN,    /* VXLAN tunnel. */

        __OVS_VPORT_TYPE_MAX

};

#define OVS_VPORT_TYPE_MAX (__OVS_VPORT_TYPE_MAX - 1)

/**

 * enum ovs_vport_attr - attributes for %OVS_VPORT_* commands.

 * @OVS_VPORT_ATTR_PORT_NO: 32-bit port number within datapath.

 * @OVS_VPORT_ATTR_TYPE: 32-bit %OVS_VPORT_TYPE_* constant describing the type

 * of vport.

 * @OVS_VPORT_ATTR_NAME: Name of vport.  For a vport based on a network device

 * this is the name of the network device.  Maximum length %IFNAMSIZ-1 bytes

 * plus a null terminator.

 * @OVS_VPORT_ATTR_OPTIONS: Vport-specific configuration information.

 * @OVS_VPORT_ATTR_UPCALL_PID: The Netlink socket in userspace that

 * OVS_PACKET_CMD_MISS upcalls will be directed to for packets received on

 * this port.  A value of zero indicates that upcalls should not be sent.

 * @OVS_VPORT_ATTR_STATS: A &struct ovs_vport_stats giving statistics for

 * packets sent or received through the vport.

 *

 * These attributes follow the &struct ovs_header within the Generic Netlink

 * payload for %OVS_VPORT_* commands.

 *

 * For %OVS_VPORT_CMD_NEW requests, the %OVS_VPORT_ATTR_TYPE and

 * %OVS_VPORT_ATTR_NAME attributes are required.  %OVS_VPORT_ATTR_PORT_NO is

 * optional; if not specified a free port number is automatically selected.

 * Whether %OVS_VPORT_ATTR_OPTIONS is required or optional depends on the type

 * of vport.

 *

 * For other requests, if %OVS_VPORT_ATTR_NAME is specified then it is used to

 * look up the vport to operate on; otherwise dp_idx from the &struct

 * ovs_header plus %OVS_VPORT_ATTR_PORT_NO determine the vport.

 */

enum ovs_vport_attr {

        OVS_VPORT_ATTR_UNSPEC,

        OVS_VPORT_ATTR_PORT_NO, /* u32 port number within datapath */

        OVS_VPORT_ATTR_TYPE,    /* u32 OVS_VPORT_TYPE_* constant. */

        OVS_VPORT_ATTR_NAME,    /* string name, up to IFNAMSIZ bytes long */

        OVS_VPORT_ATTR_OPTIONS, /* nested attributes, varies by vport type */

        OVS_VPORT_ATTR_UPCALL_PID, /* u32 Netlink PID to receive upcalls */

        OVS_VPORT_ATTR_STATS,   /* struct ovs_vport_stats */

        __OVS_VPORT_ATTR_MAX

};

#define OVS_VPORT_ATTR_MAX (__OVS_VPORT_ATTR_MAX - 1)

/* OVS_VPORT_ATTR_OPTIONS attributes for tunnels.

 */

enum {

        OVS_TUNNEL_ATTR_UNSPEC,

        OVS_TUNNEL_ATTR_DST_PORT, /* 16-bit UDP port, used by L4 tunnels. */

        __OVS_TUNNEL_ATTR_MAX

};

#define OVS_TUNNEL_ATTR_MAX (__OVS_TUNNEL_ATTR_MAX - 1)

/* Flows. */

#define OVS_FLOW_FAMILY  "ovs_flow"

#define OVS_FLOW_MCGROUP "ovs_flow"

#define OVS_FLOW_VERSION 0x1

enum ovs_flow_cmd {

        OVS_FLOW_CMD_UNSPEC,

        OVS_FLOW_CMD_NEW,

        OVS_FLOW_CMD_DEL,

        OVS_FLOW_CMD_GET,

        OVS_FLOW_CMD_SET

};

struct ovs_flow_stats {

        __u64 n_packets;         /* Number of matched packets. */

        __u64 n_bytes;           /* Number of matched bytes. */

};

enum ovs_key_attr {

        OVS_KEY_ATTR_UNSPEC,

        OVS_KEY_ATTR_ENCAP,     /* Nested set of encapsulated attributes. */

        OVS_KEY_ATTR_PRIORITY,  /* u32 skb->priority */

        OVS_KEY_ATTR_IN_PORT,   /* u32 OVS dp port number */

        OVS_KEY_ATTR_ETHERNET,  /* struct ovs_key_ethernet */

        OVS_KEY_ATTR_VLAN,      /* be16 VLAN TCI */

        OVS_KEY_ATTR_ETHERTYPE, /* be16 Ethernet type */

        OVS_KEY_ATTR_IPV4,      /* struct ovs_key_ipv4 */

        OVS_KEY_ATTR_IPV6,      /* struct ovs_key_ipv6 */

        OVS_KEY_ATTR_TCP,       /* struct ovs_key_tcp */

        OVS_KEY_ATTR_UDP,       /* struct ovs_key_udp */

        OVS_KEY_ATTR_ICMP,      /* struct ovs_key_icmp */

        OVS_KEY_ATTR_ICMPV6,    /* struct ovs_key_icmpv6 */

        OVS_KEY_ATTR_ARP,       /* struct ovs_key_arp */

        OVS_KEY_ATTR_ND,        /* struct ovs_key_nd */

        OVS_KEY_ATTR_SKB_MARK,  /* u32 skb mark */

        OVS_KEY_ATTR_TUNNEL,    /* Nested set of ovs_tunnel attributes */

        OVS_KEY_ATTR_SCTP,      /* struct ovs_key_sctp */

        OVS_KEY_ATTR_TCP_FLAGS, /* be16 TCP flags. */

        __OVS_KEY_ATTR_MAX

};

#define OVS_KEY_ATTR_MAX (__OVS_KEY_ATTR_MAX - 1)

enum ovs_tunnel_key_attr {

        OVS_TUNNEL_KEY_ATTR_ID,                 /* be64 Tunnel ID */

        OVS_TUNNEL_KEY_ATTR_IPV4_SRC,           /* be32 src IP address. */

        OVS_TUNNEL_KEY_ATTR_IPV4_DST,           /* be32 dst IP address. */

        OVS_TUNNEL_KEY_ATTR_TOS,                /* u8 Tunnel IP ToS. */

        OVS_TUNNEL_KEY_ATTR_TTL,                /* u8 Tunnel IP TTL. */

        OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT,      /* No argument, set DF. */

        OVS_TUNNEL_KEY_ATTR_CSUM,               /* No argument. CSUM packet. */

        __OVS_TUNNEL_KEY_ATTR_MAX

};

#define OVS_TUNNEL_KEY_ATTR_MAX (__OVS_TUNNEL_KEY_ATTR_MAX - 1)

/**

 * enum ovs_frag_type - IPv4 and IPv6 fragment type

 * @OVS_FRAG_TYPE_NONE: Packet is not a fragment.

 * @OVS_FRAG_TYPE_FIRST: Packet is a fragment with offset 0.

 * @OVS_FRAG_TYPE_LATER: Packet is a fragment with nonzero offset.

 *

 * Used as the @ipv4_frag in &struct ovs_key_ipv4 and as @ipv6_frag &struct

 * ovs_key_ipv6.

 */

enum ovs_frag_type {

        OVS_FRAG_TYPE_NONE,

        OVS_FRAG_TYPE_FIRST,

        OVS_FRAG_TYPE_LATER,

        __OVS_FRAG_TYPE_MAX

};

#define OVS_FRAG_TYPE_MAX (__OVS_FRAG_TYPE_MAX - 1)

struct ovs_key_ethernet {

        __u8     eth_src[ETH_ALEN];

        __u8     eth_dst[ETH_ALEN];

};

struct ovs_key_ipv4 {

        __be32 ipv4_src;

        __be32 ipv4_dst;

        __u8   ipv4_proto;

        __u8   ipv4_tos;

        __u8   ipv4_ttl;

        __u8   ipv4_frag;       /* One of OVS_FRAG_TYPE_*. */

};

struct ovs_key_ipv6 {

        __be32 ipv6_src[4];

        __be32 ipv6_dst[4];

        __be32 ipv6_label;      /* 20-bits in least-significant bits. */

        __u8   ipv6_proto;

        __u8   ipv6_tclass;

        __u8   ipv6_hlimit;

        __u8   ipv6_frag;       /* One of OVS_FRAG_TYPE_*. */

};

struct ovs_key_tcp {

        __be16 tcp_src;

        __be16 tcp_dst;

};

struct ovs_key_udp {

        __be16 udp_src;

        __be16 udp_dst;

};

struct ovs_key_sctp {

        __be16 sctp_src;

        __be16 sctp_dst;

};

struct ovs_key_icmp {

        __u8 icmp_type;

        __u8 icmp_code;

};

struct ovs_key_icmpv6 {

        __u8 icmpv6_type;

        __u8 icmpv6_code;

};

struct ovs_key_arp {

        __be32 arp_sip;

        __be32 arp_tip;

        __be16 arp_op;

        __u8   arp_sha[ETH_ALEN];

        __u8   arp_tha[ETH_ALEN];

};

struct ovs_key_nd {

        __u32 nd_target[4];

        __u8  nd_sll[ETH_ALEN];

        __u8  nd_tll[ETH_ALEN];

};

/**

 * enum ovs_flow_attr - attributes for %OVS_FLOW_* commands.

 * @OVS_FLOW_ATTR_KEY: Nested %OVS_KEY_ATTR_* attributes specifying the flow

 * key.  Always present in notifications.  Required for all requests (except

 * dumps).

 * @OVS_FLOW_ATTR_ACTIONS: Nested %OVS_ACTION_ATTR_* attributes specifying

 * the actions to take for packets that match the key.  Always present in

 * notifications.  Required for %OVS_FLOW_CMD_NEW requests, optional for

 * %OVS_FLOW_CMD_SET requests.

 * @OVS_FLOW_ATTR_STATS: &struct ovs_flow_stats giving statistics for this

 * flow.  Present in notifications if the stats would be nonzero.  Ignored in

 * requests.

 * @OVS_FLOW_ATTR_TCP_FLAGS: An 8-bit value giving the OR'd value of all of the

 * TCP flags seen on packets in this flow.  Only present in notifications for

 * TCP flows, and only if it would be nonzero.  Ignored in requests.

 * @OVS_FLOW_ATTR_USED: A 64-bit integer giving the time, in milliseconds on

 * the system monotonic clock, at which a packet was last processed for this

 * flow.  Only present in notifications if a packet has been processed for this

 * flow.  Ignored in requests.

 * @OVS_FLOW_ATTR_CLEAR: If present in a %OVS_FLOW_CMD_SET request, clears the

 * last-used time, accumulated TCP flags, and statistics for this flow.

 * Otherwise ignored in requests.  Never present in notifications.

 * @OVS_FLOW_ATTR_MASK: Nested %OVS_KEY_ATTR_* attributes specifying the

 * mask bits for wildcarded flow match. Mask bit value '1' specifies exact

 * match with corresponding flow key bit, while mask bit value '0' specifies

 * a wildcarded match. Omitting attribute is treated as wildcarding all

 * corresponding fields. Optional for all requests. If not present,

 * all flow key bits are exact match bits.

 *

 * These attributes follow the &struct ovs_header within the Generic Netlink

 * payload for %OVS_FLOW_* commands.

 */

enum ovs_flow_attr {

        OVS_FLOW_ATTR_UNSPEC,

        OVS_FLOW_ATTR_KEY,       /* Sequence of OVS_KEY_ATTR_* attributes. */

        OVS_FLOW_ATTR_ACTIONS,   /* Nested OVS_ACTION_ATTR_* attributes. */

        OVS_FLOW_ATTR_STATS,     /* struct ovs_flow_stats. */

        OVS_FLOW_ATTR_TCP_FLAGS, /* 8-bit OR'd TCP flags. */

        OVS_FLOW_ATTR_USED,      /* u64 msecs last used in monotonic time. */

        OVS_FLOW_ATTR_CLEAR,     /* Flag to clear stats, tcp_flags, used. */

        OVS_FLOW_ATTR_MASK,      /* Sequence of OVS_KEY_ATTR_* attributes. */

        __OVS_FLOW_ATTR_MAX

};

#define OVS_FLOW_ATTR_MAX (__OVS_FLOW_ATTR_MAX - 1)

/**

 * enum ovs_sample_attr - Attributes for %OVS_ACTION_ATTR_SAMPLE action.

 * @OVS_SAMPLE_ATTR_PROBABILITY: 32-bit fraction of packets to sample with

 * @OVS_ACTION_ATTR_SAMPLE.  A value of 0 samples no packets, a value of

 * %UINT32_MAX samples all packets and intermediate values sample intermediate

 * fractions of packets.

 * @OVS_SAMPLE_ATTR_ACTIONS: Set of actions to execute in sampling event.

 * Actions are passed as nested attributes.

 *

 * Executes the specified actions with the given probability on a per-packet

 * basis.

 */

enum ovs_sample_attr {

        OVS_SAMPLE_ATTR_UNSPEC,

        OVS_SAMPLE_ATTR_PROBABILITY, /* u32 number */

        OVS_SAMPLE_ATTR_ACTIONS,     /* Nested OVS_ACTION_ATTR_* attributes. */

        __OVS_SAMPLE_ATTR_MAX,

};

#define OVS_SAMPLE_ATTR_MAX (__OVS_SAMPLE_ATTR_MAX - 1)

/**

 * enum ovs_userspace_attr - Attributes for %OVS_ACTION_ATTR_USERSPACE action.

 * @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.

 */

enum ovs_userspace_attr {

        OVS_USERSPACE_ATTR_UNSPEC,

        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)

/**

 * 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 */