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Edit File : openvswitch.h \| Size : 39.24 KB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note / / * Copyright (c) 2007-2017 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_PER_CPU_PIDS: Per-cpu array of PIDs for upcalls when * OVS_DP_F_DISPATCH_UPCALL_PER_CPU feature is set. * @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. * @OVS_DP_ATTR_IFINDEX: Interface index for a new datapath netdev. Only * valid for %OVS_DP_CMD_NEW requests. * * 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_PAD, OVS_DP_ATTR_MASKS_CACHE_SIZE, OVS_DP_ATTR_PER_CPU_PIDS, / Netlink PIDS to receive upcalls in * per-cpu dispatch mode / OVS_DP_ATTR_IFINDEX, __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 n_cache_hit; / Number of cache matches for flow lookups. / __u64 pad1; / 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) / Allow datapath to associate multiple Netlink PIDs to each vport / #define OVS_DP_F_VPORT_PIDS (1 << 1) / Allow tc offload recirc sharing / #define OVS_DP_F_TC_RECIRC_SHARING (1 << 2) / Allow per-cpu dispatch of upcalls / #define OVS_DP_F_DISPATCH_UPCALL_PER_CPU (1 << 3) / 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. * Also used in upcall when %OVS_ACTION_ATTR_USERSPACE has optional * %OVS_USERSPACE_ATTR_ACTIONS attribute. * @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. * @OVS_PACKET_ATTR_EGRESS_TUN_KEY: Present for an %OVS_PACKET_CMD_ACTION * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an * %OVS_USERSPACE_ATTR_EGRESS_TUN_PORT attribute, which is sent only if the * output port is actually a tunnel port. Contains the output tunnel key * extracted from the packet as nested %OVS_TUNNEL_KEY_ATTR_* attributes. * @OVS_PACKET_ATTR_MRU: Present for an %OVS_PACKET_CMD_ACTION and * @OVS_PACKET_ATTR_LEN: Packet size before truncation. * %OVS_PACKET_ATTR_USERSPACE action specify the Maximum received fragment * size. * @OVS_PACKET_ATTR_HASH: Packet hash info (e.g. hash, sw_hash and l4_hash in skb). * * 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_EGRESS_TUN_KEY, / Nested OVS_TUNNEL_KEY_ATTR_* attributes. / OVS_PACKET_ATTR_UNUSED1, OVS_PACKET_ATTR_UNUSED2, OVS_PACKET_ATTR_PROBE, / Packet operation is a feature probe, error logging should be suppressed. / OVS_PACKET_ATTR_MRU, / Maximum received IP fragment size. / OVS_PACKET_ATTR_LEN, / Packet size before truncation. / OVS_PACKET_ATTR_HASH, / Packet hash. / __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_GENEVE, / Geneve 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 array of Netlink socket pids in userspace * among which OVS_PACKET_CMD_MISS upcalls will be distributed for packets * received on this port. If this is a single-element array of value 0, * 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, / array of u32 Netlink socket PIDs for / / receiving upcalls / OVS_VPORT_ATTR_STATS, / struct ovs_vport_stats / OVS_VPORT_ATTR_PAD, OVS_VPORT_ATTR_IFINDEX, OVS_VPORT_ATTR_NETNSID, OVS_VPORT_ATTR_UPCALL_STATS, __OVS_VPORT_ATTR_MAX }; #define OVS_VPORT_ATTR_MAX (__OVS_VPORT_ATTR_MAX - 1) /* * enum ovs_vport_upcall_attr - attributes for %OVS_VPORT_UPCALL* commands * @OVS_VPORT_UPCALL_SUCCESS: 64-bit upcall success packets. * @OVS_VPORT_UPCALL_FAIL: 64-bit upcall fail packets. / enum ovs_vport_upcall_attr { OVS_VPORT_UPCALL_ATTR_SUCCESS, OVS_VPORT_UPCALL_ATTR_FAIL, __OVS_VPORT_UPCALL_ATTR_MAX }; #define OVS_VPORT_UPCALL_ATTR_MAX (__OVS_VPORT_UPCALL_ATTR_MAX - 1) enum { OVS_VXLAN_EXT_UNSPEC, OVS_VXLAN_EXT_GBP, / Flag or __u32 / __OVS_VXLAN_EXT_MAX, }; #define OVS_VXLAN_EXT_MAX (__OVS_VXLAN_EXT_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_EXTENSION, __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_DP_HASH, / u32 hash value. Value 0 indicates the hash is not computed by the datapath. / OVS_KEY_ATTR_RECIRC_ID, / u32 recirc id / OVS_KEY_ATTR_MPLS, / array of struct ovs_key_mpls. * The implementation may restrict * the accepted length of the array. / OVS_KEY_ATTR_CT_STATE, / u32 bitmask of OVS_CS_F_* / OVS_KEY_ATTR_CT_ZONE, / u16 connection tracking zone. / OVS_KEY_ATTR_CT_MARK, / u32 connection tracking mark / OVS_KEY_ATTR_CT_LABELS, / 16-octet connection tracking label / OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4, / struct ovs_key_ct_tuple_ipv4 / OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6, / struct ovs_key_ct_tuple_ipv6 / OVS_KEY_ATTR_NSH, / Nested set of ovs_nsh_key_* / __OVS_KEY_ATTR_MAX }; #define OVS_KEY_ATTR_MAX (__OVS_KEY_ATTR_MAX - 1) enum ovs_tunnel_key_attr { / OVS_TUNNEL_KEY_ATTR_NONE, standard nl API requires this attribute! / 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_OAM, / No argument. OAM frame. / OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS, / Array of Geneve options. / OVS_TUNNEL_KEY_ATTR_TP_SRC, / be16 src Transport Port. / OVS_TUNNEL_KEY_ATTR_TP_DST, / be16 dst Transport Port. / OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS, / Nested OVS_VXLAN_EXT_* / OVS_TUNNEL_KEY_ATTR_IPV6_SRC, / struct in6_addr src IPv6 address. / OVS_TUNNEL_KEY_ATTR_IPV6_DST, / struct in6_addr dst IPv6 address. / OVS_TUNNEL_KEY_ATTR_PAD, OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS, / struct erspan_metadata / OVS_TUNNEL_KEY_ATTR_IPV4_INFO_BRIDGE, / No argument. IPV4_INFO_BRIDGE mode./ __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_mpls { __be32 mpls_lse; }; 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 { __be32 nd_target[4]; __u8 nd_sll[ETH_ALEN]; __u8 nd_tll[ETH_ALEN]; }; #define OVS_CT_LABELS_LEN_32 4 #define OVS_CT_LABELS_LEN (OVS_CT_LABELS_LEN_32 * sizeof(__u32)) struct ovs_key_ct_labels { union { __u8 ct_labels[OVS_CT_LABELS_LEN]; __u32 ct_labels_32[OVS_CT_LABELS_LEN_32]; }; }; /* OVS_KEY_ATTR_CT_STATE flags / #define OVS_CS_F_NEW 0x01 / Beginning of a new connection. / #define OVS_CS_F_ESTABLISHED 0x02 / Part of an existing connection. / #define OVS_CS_F_RELATED 0x04 / Related to an established * connection. / #define OVS_CS_F_REPLY_DIR 0x08 / Flow is in the reply direction. / #define OVS_CS_F_INVALID 0x10 / Could not track connection. / #define OVS_CS_F_TRACKED 0x20 / Conntrack has occurred. / #define OVS_CS_F_SRC_NAT 0x40 / Packet's source address/port was * mangled by NAT. / #define OVS_CS_F_DST_NAT 0x80 / Packet's destination address/port * was mangled by NAT. / #define OVS_CS_F_NAT_MASK (OVS_CS_F_SRC_NAT \| OVS_CS_F_DST_NAT) struct ovs_key_ct_tuple_ipv4 { __be32 ipv4_src; __be32 ipv4_dst; __be16 src_port; __be16 dst_port; __u8 ipv4_proto; }; struct ovs_key_ct_tuple_ipv6 { __be32 ipv6_src[4]; __be32 ipv6_dst[4]; __be16 src_port; __be16 dst_port; __u8 ipv6_proto; }; enum ovs_nsh_key_attr { OVS_NSH_KEY_ATTR_UNSPEC, OVS_NSH_KEY_ATTR_BASE, / struct ovs_nsh_key_base. / OVS_NSH_KEY_ATTR_MD1, / struct ovs_nsh_key_md1. / OVS_NSH_KEY_ATTR_MD2, / variable-length octets for MD type 2. / __OVS_NSH_KEY_ATTR_MAX }; #define OVS_NSH_KEY_ATTR_MAX (__OVS_NSH_KEY_ATTR_MAX - 1) struct ovs_nsh_key_base { __u8 flags; __u8 ttl; __u8 mdtype; __u8 np; __be32 path_hdr; }; #define NSH_MD1_CONTEXT_SIZE 4 struct ovs_nsh_key_md1 { __be32 context[NSH_MD1_CONTEXT_SIZE]; }; /* * 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. An %OVS_FLOW_CMD_SET without * %OVS_FLOW_ATTR_ACTIONS will not modify the actions. To clear the actions, * an %OVS_FLOW_ATTR_ACTIONS without any nested attributes must be given. * @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. * @OVS_FLOW_ATTR_UFID: A value between 1-16 octets specifying a unique * identifier for the flow. Causes the flow to be indexed by this value rather * than the value of the %OVS_FLOW_ATTR_KEY attribute. Optional for all * requests. Present in notifications if the flow was created with this * attribute. * @OVS_FLOW_ATTR_UFID_FLAGS: A 32-bit value of OR'd %OVS_UFID_F_* * flags that provide alternative semantics for flow installation and * retrieval. Optional for all requests. * * 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_PROBE, / Flow operation is a feature probe, error * logging should be suppressed. / OVS_FLOW_ATTR_UFID, / Variable length unique flow identifier. / OVS_FLOW_ATTR_UFID_FLAGS,/ u32 of OVS_UFID_F_. / OVS_FLOW_ATTR_PAD, __OVS_FLOW_ATTR_MAX }; #define OVS_FLOW_ATTR_MAX (__OVS_FLOW_ATTR_MAX - 1) /** * Omit attributes for notifications. * * If a datapath request contains an %OVS_UFID_F_OMIT_* flag, then the datapath * may omit the corresponding %OVS_FLOW_ATTR_* from the response. / #define OVS_UFID_F_OMIT_KEY (1 << 0) #define OVS_UFID_F_OMIT_MASK (1 << 1) #define OVS_UFID_F_OMIT_ACTIONS (1 << 2) /* * 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. * @OVS_USERSPACE_ATTR_EGRESS_TUN_PORT: If present, u32 output port to get * tunnel info. * @OVS_USERSPACE_ATTR_ACTIONS: If present, send actions with upcall. / 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_EGRESS_TUN_PORT, / Optional, u32 output port * to get tunnel info. / OVS_USERSPACE_ATTR_ACTIONS, / Optional flag to get actions. / __OVS_USERSPACE_ATTR_MAX }; #define OVS_USERSPACE_ATTR_MAX (__OVS_USERSPACE_ATTR_MAX - 1) struct ovs_action_trunc { __u32 max_len; / Max packet size in bytes. / }; /* * struct ovs_action_push_mpls - %OVS_ACTION_ATTR_PUSH_MPLS action argument. * @mpls_lse: MPLS label stack entry to push. * @mpls_ethertype: Ethertype to set in the encapsulating ethernet frame. * * The only values @mpls_ethertype should ever be given are %ETH_P_MPLS_UC and * %ETH_P_MPLS_MC, indicating MPLS unicast or multicast. Other are rejected. / struct ovs_action_push_mpls { __be32 mpls_lse; __be16 mpls_ethertype; / Either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC / }; /* * struct ovs_action_add_mpls - %OVS_ACTION_ATTR_ADD_MPLS action * argument. * @mpls_lse: MPLS label stack entry to push. * @mpls_ethertype: Ethertype to set in the encapsulating ethernet frame. * @tun_flags: MPLS tunnel attributes. * * The only values @mpls_ethertype should ever be given are %ETH_P_MPLS_UC and * %ETH_P_MPLS_MC, indicating MPLS unicast or multicast. Other are rejected. / struct ovs_action_add_mpls { __be32 mpls_lse; __be16 mpls_ethertype; / Either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC / __u16 tun_flags; }; #define OVS_MPLS_L3_TUNNEL_FLAG_MASK (1 << 0) / Flag to specify the place of * insertion of MPLS header. * When false, the MPLS header * will be inserted at the start * of the packet. * When true, the MPLS header * will be inserted at the start * of the l3 header. / /* * 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 or %ETH_P_8021AD. * The only acceptable TPID values are those that the kernel module also parses * as 802.1Q or 802.1AD 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 or 802.1ad TPID. / __be16 vlan_tci; / 802.1Q TCI (VLAN ID and priority). / }; / Data path hash algorithm for computing Datapath hash. * * The algorithm type only specifies the fields in a flow * will be used as part of the hash. Each datapath is free * to use its own hash algorithm. The hash value will be * opaque to the user space daemon. / enum ovs_hash_alg { OVS_HASH_ALG_L4, OVS_HASH_ALG_SYM_L4, }; / * struct ovs_action_hash - %OVS_ACTION_ATTR_HASH action argument. * @hash_alg: Algorithm used to compute hash prior to recirculation. * @hash_basis: basis used for computing hash. / struct ovs_action_hash { __u32 hash_alg; / One of ovs_hash_alg. / __u32 hash_basis; }; /* * enum ovs_ct_attr - Attributes for %OVS_ACTION_ATTR_CT action. * @OVS_CT_ATTR_COMMIT: If present, commits the connection to the conntrack * table. This allows future packets for the same connection to be identified * as 'established' or 'related'. The flow key for the current packet will * retain the pre-commit connection state. * @OVS_CT_ATTR_ZONE: u16 connection tracking zone. * @OVS_CT_ATTR_MARK: u32 value followed by u32 mask. For each bit set in the * mask, the corresponding bit in the value is copied to the connection * tracking mark field in the connection. * @OVS_CT_ATTR_LABELS: %OVS_CT_LABELS_LEN value followed by %OVS_CT_LABELS_LEN * mask. For each bit set in the mask, the corresponding bit in the value is * copied to the connection tracking label field in the connection. * @OVS_CT_ATTR_HELPER: variable length string defining conntrack ALG. * @OVS_CT_ATTR_NAT: Nested OVS_NAT_ATTR_* for performing L3 network address * translation (NAT) on the packet. * @OVS_CT_ATTR_FORCE_COMMIT: Like %OVS_CT_ATTR_COMMIT, but instead of doing * nothing if the connection is already committed will check that the current * packet is in conntrack entry's original direction. If directionality does * not match, will delete the existing conntrack entry and commit a new one. * @OVS_CT_ATTR_EVENTMASK: Mask of bits indicating which conntrack event types * (enum ip_conntrack_events IPCT_) should be reported. For any bit set to zero, the corresponding event type is not generated. Default behavior * depends on system configuration, but typically all event types are * generated, hence listening on NFNLGRP_CONNTRACK_UPDATE events may get a lot * of events. Explicitly passing this attribute allows limiting the updates * received to the events of interest. The bit 1 << IPCT_NEW, 1 << * IPCT_RELATED, and 1 << IPCT_DESTROY must be set to ones for those events to * be received on NFNLGRP_CONNTRACK_NEW and NFNLGRP_CONNTRACK_DESTROY groups, * respectively. Remaining bits control the changes for which an event is * delivered on the NFNLGRP_CONNTRACK_UPDATE group. * @OVS_CT_ATTR_TIMEOUT: Variable length string defining conntrack timeout. / enum ovs_ct_attr { OVS_CT_ATTR_UNSPEC, OVS_CT_ATTR_COMMIT, / No argument, commits connection. / OVS_CT_ATTR_ZONE, / u16 zone id. / OVS_CT_ATTR_MARK, / mark to associate with this connection. / OVS_CT_ATTR_LABELS, / labels to associate with this connection. / OVS_CT_ATTR_HELPER, / netlink helper to assist detection of related connections. / OVS_CT_ATTR_NAT, / Nested OVS_NAT_ATTR_* / OVS_CT_ATTR_FORCE_COMMIT, / No argument / OVS_CT_ATTR_EVENTMASK, / u32 mask of IPCT_* events. / OVS_CT_ATTR_TIMEOUT, / Associate timeout with this connection for * fine-grain timeout tuning. / __OVS_CT_ATTR_MAX }; #define OVS_CT_ATTR_MAX (__OVS_CT_ATTR_MAX - 1) /* * enum ovs_nat_attr - Attributes for %OVS_CT_ATTR_NAT. * * @OVS_NAT_ATTR_SRC: Flag for Source NAT (mangle source address/port). * @OVS_NAT_ATTR_DST: Flag for Destination NAT (mangle destination * address/port). Only one of (@OVS_NAT_ATTR_SRC, @OVS_NAT_ATTR_DST) may be * specified. Effective only for packets for ct_state NEW connections. * Packets of committed connections are mangled by the NAT action according to * the committed NAT type regardless of the flags specified. As a corollary, a * NAT action without a NAT type flag will only mangle packets of committed * connections. The following NAT attributes only apply for NEW * (non-committed) connections, and they may be included only when the CT * action has the @OVS_CT_ATTR_COMMIT flag and either @OVS_NAT_ATTR_SRC or * @OVS_NAT_ATTR_DST is also included. * @OVS_NAT_ATTR_IP_MIN: struct in_addr or struct in6_addr * @OVS_NAT_ATTR_IP_MAX: struct in_addr or struct in6_addr * @OVS_NAT_ATTR_PROTO_MIN: u16 L4 protocol specific lower boundary (port) * @OVS_NAT_ATTR_PROTO_MAX: u16 L4 protocol specific upper boundary (port) * @OVS_NAT_ATTR_PERSISTENT: Flag for persistent IP mapping across reboots * @OVS_NAT_ATTR_PROTO_HASH: Flag for pseudo random L4 port mapping (MD5) * @OVS_NAT_ATTR_PROTO_RANDOM: Flag for fully randomized L4 port mapping / enum ovs_nat_attr { OVS_NAT_ATTR_UNSPEC, OVS_NAT_ATTR_SRC, OVS_NAT_ATTR_DST, OVS_NAT_ATTR_IP_MIN, OVS_NAT_ATTR_IP_MAX, OVS_NAT_ATTR_PROTO_MIN, OVS_NAT_ATTR_PROTO_MAX, OVS_NAT_ATTR_PERSISTENT, OVS_NAT_ATTR_PROTO_HASH, OVS_NAT_ATTR_PROTO_RANDOM, __OVS_NAT_ATTR_MAX, }; #define OVS_NAT_ATTR_MAX (__OVS_NAT_ATTR_MAX - 1) / * struct ovs_action_push_eth - %OVS_ACTION_ATTR_PUSH_ETH action argument. * @addresses: Source and destination MAC addresses. * @eth_type: Ethernet type / struct ovs_action_push_eth { struct ovs_key_ethernet addresses; }; / * enum ovs_check_pkt_len_attr - Attributes for %OVS_ACTION_ATTR_CHECK_PKT_LEN. * * @OVS_CHECK_PKT_LEN_ATTR_PKT_LEN: u16 Packet length to check for. * @OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER: Nested OVS_ACTION_ATTR_* * actions to apply if the packer length is greater than the specified * length in the attr - OVS_CHECK_PKT_LEN_ATTR_PKT_LEN. * @OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL - Nested OVS_ACTION_ATTR_* * actions to apply if the packer length is lesser or equal to the specified * length in the attr - OVS_CHECK_PKT_LEN_ATTR_PKT_LEN. / enum ovs_check_pkt_len_attr { OVS_CHECK_PKT_LEN_ATTR_UNSPEC, OVS_CHECK_PKT_LEN_ATTR_PKT_LEN, OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER, OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL, __OVS_CHECK_PKT_LEN_ATTR_MAX, }; #define OVS_CHECK_PKT_LEN_ATTR_MAX (__OVS_CHECK_PKT_LEN_ATTR_MAX - 1) /* * enum ovs_action_attr - Action types. * * @OVS_ACTION_ATTR_OUTPUT: Output packet to port. * @OVS_ACTION_ATTR_TRUNC: Output packet to port with truncated packet size. * @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_SET_MASKED: Replaces the contents of an existing header. A * nested %OVS_KEY_ATTR_* attribute specifies a header to modify, its value, * and a mask. For every bit set in the mask, the corresponding bit value * is copied from the value to the packet header field, rest of the bits are * left unchanged. The non-masked value bits must be passed in as zeroes. * Masking is not supported for the %OVS_KEY_ATTR_TUNNEL attribute. * @OVS_ACTION_ATTR_PUSH_VLAN: Push a new outermost 802.1Q or 802.1ad header * onto the packet. * @OVS_ACTION_ATTR_POP_VLAN: Pop the outermost 802.1Q or 802.1ad header * from the packet. * @OVS_ACTION_ATTR_SAMPLE: Probabilitically executes actions, as specified in * the nested %OVS_SAMPLE_ATTR_* attributes. * @OVS_ACTION_ATTR_PUSH_MPLS: Push a new MPLS label stack entry onto the * top of the packets MPLS label stack. Set the ethertype of the * encapsulating frame to either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC to * indicate the new packet contents. * @OVS_ACTION_ATTR_POP_MPLS: Pop an MPLS label stack entry off of the * packet's MPLS label stack. Set the encapsulating frame's ethertype to * indicate the new packet contents. This could potentially still be * %ETH_P_MPLS if the resulting MPLS label stack is not empty. If there * is no MPLS label stack, as determined by ethertype, no action is taken. * @OVS_ACTION_ATTR_CT: Track the connection. Populate the conntrack-related * entries in the flow key. * @OVS_ACTION_ATTR_PUSH_ETH: Push a new outermost Ethernet header onto the * packet. * @OVS_ACTION_ATTR_POP_ETH: Pop the outermost Ethernet header off the * packet. * @OVS_ACTION_ATTR_CT_CLEAR: Clear conntrack state from the packet. * @OVS_ACTION_ATTR_PUSH_NSH: push NSH header to the packet. * @OVS_ACTION_ATTR_POP_NSH: pop the outermost NSH header off the packet. * @OVS_ACTION_ATTR_METER: Run packet through a meter, which may drop the * packet, or modify the packet (e.g., change the DSCP field). * @OVS_ACTION_ATTR_CLONE: make a copy of the packet and execute a list of * actions without affecting the original packet and key. * @OVS_ACTION_ATTR_CHECK_PKT_LEN: Check the packet length and execute a set * of actions if greater than the specified packet length, else execute * another set of actions. * @OVS_ACTION_ATTR_ADD_MPLS: Push a new MPLS label stack entry at the * start of the packet or at the start of the l3 header depending on the value * of l3 tunnel flag in the tun_flags field of OVS_ACTION_ATTR_ADD_MPLS * argument. * * 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. * * @OVS_ACTION_ATTR_SET_TO_MASKED: Kernel internal masked set action translated * from the @OVS_ACTION_ATTR_SET. / 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_RECIRC, /* u32 recirc_id. / OVS_ACTION_ATTR_HASH, / struct ovs_action_hash. / OVS_ACTION_ATTR_PUSH_MPLS, / struct ovs_action_push_mpls. / OVS_ACTION_ATTR_POP_MPLS, / __be16 ethertype. / OVS_ACTION_ATTR_SET_MASKED, / One nested OVS_KEY_ATTR_* including * data immediately followed by a mask. * The data must be zero for the unmasked * bits. / OVS_ACTION_ATTR_CT, / Nested OVS_CT_ATTR_* . / OVS_ACTION_ATTR_TRUNC, / u32 struct ovs_action_trunc. / OVS_ACTION_ATTR_PUSH_ETH, / struct ovs_action_push_eth. / OVS_ACTION_ATTR_POP_ETH, / No argument. / OVS_ACTION_ATTR_CT_CLEAR, / No argument. / OVS_ACTION_ATTR_PUSH_NSH, / Nested OVS_NSH_KEY_ATTR_. / OVS_ACTION_ATTR_POP_NSH, /* No argument. / OVS_ACTION_ATTR_METER, / u32 meter ID. / OVS_ACTION_ATTR_CLONE, / Nested OVS_CLONE_ATTR_. / OVS_ACTION_ATTR_CHECK_PKT_LEN, /* Nested OVS_CHECK_PKT_LEN_ATTR_. / OVS_ACTION_ATTR_ADD_MPLS, /* struct ovs_action_add_mpls. / OVS_ACTION_ATTR_DEC_TTL, / Nested OVS_DEC_TTL_ATTR_. / __OVS_ACTION_ATTR_MAX, /* Nothing past this will be accepted * from userspace. / }; #define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1) / Meters. / #define OVS_METER_FAMILY "ovs_meter" #define OVS_METER_MCGROUP "ovs_meter" #define OVS_METER_VERSION 0x1 enum ovs_meter_cmd { OVS_METER_CMD_UNSPEC, OVS_METER_CMD_FEATURES, / Get features supported by the datapath. / OVS_METER_CMD_SET, / Add or modify a meter. / OVS_METER_CMD_DEL, / Delete a meter. / OVS_METER_CMD_GET / Get meter stats. / }; enum ovs_meter_attr { OVS_METER_ATTR_UNSPEC, OVS_METER_ATTR_ID, / u32 meter ID within datapath. / OVS_METER_ATTR_KBPS, / No argument. If set, units in kilobits * per second. Otherwise, units in * packets per second. / OVS_METER_ATTR_STATS, / struct ovs_flow_stats for the meter. / OVS_METER_ATTR_BANDS, / Nested attributes for meter bands. / OVS_METER_ATTR_USED, / u64 msecs last used in monotonic time. / OVS_METER_ATTR_CLEAR, / Flag to clear stats, used. / OVS_METER_ATTR_MAX_METERS, / u32 number of meters supported. / OVS_METER_ATTR_MAX_BANDS, / u32 max number of bands per meter. / OVS_METER_ATTR_PAD, __OVS_METER_ATTR_MAX }; #define OVS_METER_ATTR_MAX (__OVS_METER_ATTR_MAX - 1) enum ovs_band_attr { OVS_BAND_ATTR_UNSPEC, OVS_BAND_ATTR_TYPE, / u32 OVS_METER_BAND_TYPE_* constant. / OVS_BAND_ATTR_RATE, / u32 band rate in meter units (see above). / OVS_BAND_ATTR_BURST, / u32 burst size in meter units. / OVS_BAND_ATTR_STATS, / struct ovs_flow_stats for the band. / __OVS_BAND_ATTR_MAX }; #define OVS_BAND_ATTR_MAX (__OVS_BAND_ATTR_MAX - 1) enum ovs_meter_band_type { OVS_METER_BAND_TYPE_UNSPEC, OVS_METER_BAND_TYPE_DROP, / Drop exceeding packets. / __OVS_METER_BAND_TYPE_MAX }; #define OVS_METER_BAND_TYPE_MAX (__OVS_METER_BAND_TYPE_MAX - 1) / Conntrack limit / #define OVS_CT_LIMIT_FAMILY "ovs_ct_limit" #define OVS_CT_LIMIT_MCGROUP "ovs_ct_limit" #define OVS_CT_LIMIT_VERSION 0x1 enum ovs_ct_limit_cmd { OVS_CT_LIMIT_CMD_UNSPEC, OVS_CT_LIMIT_CMD_SET, / Add or modify ct limit. / OVS_CT_LIMIT_CMD_DEL, / Delete ct limit. / OVS_CT_LIMIT_CMD_GET / Get ct limit. / }; enum ovs_ct_limit_attr { OVS_CT_LIMIT_ATTR_UNSPEC, OVS_CT_LIMIT_ATTR_ZONE_LIMIT, / Nested struct ovs_zone_limit. / __OVS_CT_LIMIT_ATTR_MAX }; #define OVS_CT_LIMIT_ATTR_MAX (__OVS_CT_LIMIT_ATTR_MAX - 1) #define OVS_ZONE_LIMIT_DEFAULT_ZONE -1 struct ovs_zone_limit { int zone_id; __u32 limit; __u32 count; }; enum ovs_dec_ttl_attr { OVS_DEC_TTL_ATTR_UNSPEC, OVS_DEC_TTL_ATTR_ACTION, / Nested struct nlattr / __OVS_DEC_TTL_ATTR_MAX }; #define OVS_DEC_TTL_ATTR_MAX (__OVS_DEC_TTL_ATTR_MAX - 1) #endif / _LINUX_OPENVSWITCH_H */ Back

Edit File : openvswitch.h | Size : 39.24 KB

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

/*
 * Copyright (c) 2007-2017 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_PER_CPU_PIDS: Per-cpu array of PIDs for upcalls when
 * OVS_DP_F_DISPATCH_UPCALL_PER_CPU feature is set.
 * @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.
 * @OVS_DP_ATTR_IFINDEX: Interface index for a new datapath netdev. Only
 * valid for %OVS_DP_CMD_NEW requests.
 *
 * 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_PAD,
	OVS_DP_ATTR_MASKS_CACHE_SIZE,
	OVS_DP_ATTR_PER_CPU_PIDS,   /* Netlink PIDS to receive upcalls in
				     * per-cpu dispatch mode
				     */
	OVS_DP_ATTR_IFINDEX,
	__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 n_cache_hit;       /* Number of cache matches for flow lookups. */
	__u64 pad1;		 /* 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)

/* Allow datapath to associate multiple Netlink PIDs to each vport */
#define OVS_DP_F_VPORT_PIDS	(1 << 1)

/* Allow tc offload recirc sharing */
#define OVS_DP_F_TC_RECIRC_SHARING	(1 << 2)

/* Allow per-cpu dispatch of upcalls */
#define OVS_DP_F_DISPATCH_UPCALL_PER_CPU	(1 << 3)

/* 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.
 * Also used in upcall when %OVS_ACTION_ATTR_USERSPACE has optional
 * %OVS_USERSPACE_ATTR_ACTIONS attribute.
 * @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.
 * @OVS_PACKET_ATTR_EGRESS_TUN_KEY: Present for an %OVS_PACKET_CMD_ACTION
 * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an
 * %OVS_USERSPACE_ATTR_EGRESS_TUN_PORT attribute, which is sent only if the
 * output port is actually a tunnel port. Contains the output tunnel key
 * extracted from the packet as nested %OVS_TUNNEL_KEY_ATTR_* attributes.
 * @OVS_PACKET_ATTR_MRU: Present for an %OVS_PACKET_CMD_ACTION and
 * @OVS_PACKET_ATTR_LEN: Packet size before truncation.
 * %OVS_PACKET_ATTR_USERSPACE action specify the Maximum received fragment
 * size.
 * @OVS_PACKET_ATTR_HASH: Packet hash info (e.g. hash, sw_hash and l4_hash in skb).
 *
 * 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_EGRESS_TUN_KEY,  /* Nested OVS_TUNNEL_KEY_ATTR_*
					    attributes. */
	OVS_PACKET_ATTR_UNUSED1,
	OVS_PACKET_ATTR_UNUSED2,
	OVS_PACKET_ATTR_PROBE,      /* Packet operation is a feature probe,
				       error logging should be suppressed. */
	OVS_PACKET_ATTR_MRU,	    /* Maximum received IP fragment size. */
	OVS_PACKET_ATTR_LEN,	    /* Packet size before truncation. */
	OVS_PACKET_ATTR_HASH,	    /* Packet hash. */
	__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_GENEVE,	 /* Geneve 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 array of Netlink socket pids in userspace
 * among which OVS_PACKET_CMD_MISS upcalls will be distributed for packets
 * received on this port.  If this is a single-element array of value 0,
 * 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, /* array of u32 Netlink socket PIDs for */
				/* receiving upcalls */
	OVS_VPORT_ATTR_STATS,	/* struct ovs_vport_stats */
	OVS_VPORT_ATTR_PAD,
	OVS_VPORT_ATTR_IFINDEX,
	OVS_VPORT_ATTR_NETNSID,
	OVS_VPORT_ATTR_UPCALL_STATS,
	__OVS_VPORT_ATTR_MAX
};

#define OVS_VPORT_ATTR_MAX (__OVS_VPORT_ATTR_MAX - 1)

/**
 * enum ovs_vport_upcall_attr - attributes for %OVS_VPORT_UPCALL* commands
 * @OVS_VPORT_UPCALL_SUCCESS: 64-bit upcall success packets.
 * @OVS_VPORT_UPCALL_FAIL: 64-bit upcall fail packets.
 */
enum ovs_vport_upcall_attr {
	OVS_VPORT_UPCALL_ATTR_SUCCESS,
	OVS_VPORT_UPCALL_ATTR_FAIL,
	__OVS_VPORT_UPCALL_ATTR_MAX
};

#define OVS_VPORT_UPCALL_ATTR_MAX (__OVS_VPORT_UPCALL_ATTR_MAX - 1)

enum {
	OVS_VXLAN_EXT_UNSPEC,
	OVS_VXLAN_EXT_GBP,	/* Flag or __u32 */
	__OVS_VXLAN_EXT_MAX,
};

#define OVS_VXLAN_EXT_MAX (__OVS_VXLAN_EXT_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_EXTENSION,
	__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_DP_HASH,      /* u32 hash value. Value 0 indicates the hash
				   is not computed by the datapath. */
	OVS_KEY_ATTR_RECIRC_ID, /* u32 recirc id */
	OVS_KEY_ATTR_MPLS,      /* array of struct ovs_key_mpls.
				 * The implementation may restrict
				 * the accepted length of the array. */
	OVS_KEY_ATTR_CT_STATE,	/* u32 bitmask of OVS_CS_F_* */
	OVS_KEY_ATTR_CT_ZONE,	/* u16 connection tracking zone. */
	OVS_KEY_ATTR_CT_MARK,	/* u32 connection tracking mark */
	OVS_KEY_ATTR_CT_LABELS,	/* 16-octet connection tracking label */
	OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4,   /* struct ovs_key_ct_tuple_ipv4 */
	OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6,   /* struct ovs_key_ct_tuple_ipv6 */
	OVS_KEY_ATTR_NSH,       /* Nested set of ovs_nsh_key_* */

__OVS_KEY_ATTR_MAX
};

#define OVS_KEY_ATTR_MAX (__OVS_KEY_ATTR_MAX - 1)

enum ovs_tunnel_key_attr {
	/* OVS_TUNNEL_KEY_ATTR_NONE, standard nl API requires this attribute! */
	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_OAM,                /* No argument. OAM frame.  */
	OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS,        /* Array of Geneve options. */
	OVS_TUNNEL_KEY_ATTR_TP_SRC,		/* be16 src Transport Port. */
	OVS_TUNNEL_KEY_ATTR_TP_DST,		/* be16 dst Transport Port. */
	OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS,		/* Nested OVS_VXLAN_EXT_* */
	OVS_TUNNEL_KEY_ATTR_IPV6_SRC,		/* struct in6_addr src IPv6 address. */
	OVS_TUNNEL_KEY_ATTR_IPV6_DST,		/* struct in6_addr dst IPv6 address. */
	OVS_TUNNEL_KEY_ATTR_PAD,
	OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS,	/* struct erspan_metadata */
	OVS_TUNNEL_KEY_ATTR_IPV4_INFO_BRIDGE,	/* No argument. IPV4_INFO_BRIDGE mode.*/
	__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_mpls {
	__be32 mpls_lse;
};

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 {
	__be32	nd_target[4];
	__u8	nd_sll[ETH_ALEN];
	__u8	nd_tll[ETH_ALEN];
};

#define OVS_CT_LABELS_LEN_32	4
#define OVS_CT_LABELS_LEN	(OVS_CT_LABELS_LEN_32 * sizeof(__u32))
struct ovs_key_ct_labels {
	union {
		__u8	ct_labels[OVS_CT_LABELS_LEN];
		__u32	ct_labels_32[OVS_CT_LABELS_LEN_32];
	};
};

/* OVS_KEY_ATTR_CT_STATE flags */
#define OVS_CS_F_NEW               0x01 /* Beginning of a new connection. */
#define OVS_CS_F_ESTABLISHED       0x02 /* Part of an existing connection. */
#define OVS_CS_F_RELATED           0x04 /* Related to an established
					 * connection. */
#define OVS_CS_F_REPLY_DIR         0x08 /* Flow is in the reply direction. */
#define OVS_CS_F_INVALID           0x10 /* Could not track connection. */
#define OVS_CS_F_TRACKED           0x20 /* Conntrack has occurred. */
#define OVS_CS_F_SRC_NAT           0x40 /* Packet's source address/port was
					 * mangled by NAT.
					 */
#define OVS_CS_F_DST_NAT           0x80 /* Packet's destination address/port
					 * was mangled by NAT.
					 */

#define OVS_CS_F_NAT_MASK (OVS_CS_F_SRC_NAT | OVS_CS_F_DST_NAT)

struct ovs_key_ct_tuple_ipv4 {
	__be32 ipv4_src;
	__be32 ipv4_dst;
	__be16 src_port;
	__be16 dst_port;
	__u8   ipv4_proto;
};

struct ovs_key_ct_tuple_ipv6 {
	__be32 ipv6_src[4];
	__be32 ipv6_dst[4];
	__be16 src_port;
	__be16 dst_port;
	__u8   ipv6_proto;
};

enum ovs_nsh_key_attr {
	OVS_NSH_KEY_ATTR_UNSPEC,
	OVS_NSH_KEY_ATTR_BASE,  /* struct ovs_nsh_key_base. */
	OVS_NSH_KEY_ATTR_MD1,   /* struct ovs_nsh_key_md1. */
	OVS_NSH_KEY_ATTR_MD2,   /* variable-length octets for MD type 2. */
	__OVS_NSH_KEY_ATTR_MAX
};

#define OVS_NSH_KEY_ATTR_MAX (__OVS_NSH_KEY_ATTR_MAX - 1)

struct ovs_nsh_key_base {
	__u8 flags;
	__u8 ttl;
	__u8 mdtype;
	__u8 np;
	__be32 path_hdr;
};

#define NSH_MD1_CONTEXT_SIZE 4

struct ovs_nsh_key_md1 {
	__be32 context[NSH_MD1_CONTEXT_SIZE];
};

/**
 * 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.  An %OVS_FLOW_CMD_SET without
 * %OVS_FLOW_ATTR_ACTIONS will not modify the actions.  To clear the actions,
 * an %OVS_FLOW_ATTR_ACTIONS without any nested attributes must be given.
 * @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.
 * @OVS_FLOW_ATTR_UFID: A value between 1-16 octets specifying a unique
 * identifier for the flow. Causes the flow to be indexed by this value rather
 * than the value of the %OVS_FLOW_ATTR_KEY attribute. Optional for all
 * requests. Present in notifications if the flow was created with this
 * attribute.
 * @OVS_FLOW_ATTR_UFID_FLAGS: A 32-bit value of OR'd %OVS_UFID_F_*
 * flags that provide alternative semantics for flow installation and
 * retrieval. Optional for all requests.
 *
 * 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_PROBE,     /* Flow operation is a feature probe, error
				  * logging should be suppressed. */
	OVS_FLOW_ATTR_UFID,      /* Variable length unique flow identifier. */
	OVS_FLOW_ATTR_UFID_FLAGS,/* u32 of OVS_UFID_F_*. */
	OVS_FLOW_ATTR_PAD,
	__OVS_FLOW_ATTR_MAX
};

#define OVS_FLOW_ATTR_MAX (__OVS_FLOW_ATTR_MAX - 1)

/**
 * Omit attributes for notifications.
 *
 * If a datapath request contains an %OVS_UFID_F_OMIT_* flag, then the datapath
 * may omit the corresponding %OVS_FLOW_ATTR_* from the response.
 */
#define OVS_UFID_F_OMIT_KEY      (1 << 0)
#define OVS_UFID_F_OMIT_MASK     (1 << 1)
#define OVS_UFID_F_OMIT_ACTIONS  (1 << 2)

/**
 * 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.
 * @OVS_USERSPACE_ATTR_EGRESS_TUN_PORT: If present, u32 output port to get
 * tunnel info.
 * @OVS_USERSPACE_ATTR_ACTIONS: If present, send actions with upcall.
 */
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_EGRESS_TUN_PORT,  /* Optional, u32 output port
					      * to get tunnel info. */
	OVS_USERSPACE_ATTR_ACTIONS,   /* Optional flag to get actions. */
	__OVS_USERSPACE_ATTR_MAX
};

#define OVS_USERSPACE_ATTR_MAX (__OVS_USERSPACE_ATTR_MAX - 1)

struct ovs_action_trunc {
	__u32 max_len; /* Max packet size in bytes. */
};

/**
 * struct ovs_action_push_mpls - %OVS_ACTION_ATTR_PUSH_MPLS action argument.
 * @mpls_lse: MPLS label stack entry to push.
 * @mpls_ethertype: Ethertype to set in the encapsulating ethernet frame.
 *
 * The only values @mpls_ethertype should ever be given are %ETH_P_MPLS_UC and
 * %ETH_P_MPLS_MC, indicating MPLS unicast or multicast. Other are rejected.
 */
struct ovs_action_push_mpls {
	__be32 mpls_lse;
	__be16 mpls_ethertype; /* Either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC */
};

/**
 * struct ovs_action_add_mpls - %OVS_ACTION_ATTR_ADD_MPLS action
 * argument.
 * @mpls_lse: MPLS label stack entry to push.
 * @mpls_ethertype: Ethertype to set in the encapsulating ethernet frame.
 * @tun_flags: MPLS tunnel attributes.
 *
 * The only values @mpls_ethertype should ever be given are %ETH_P_MPLS_UC and
 * %ETH_P_MPLS_MC, indicating MPLS unicast or multicast. Other are rejected.
 */
struct ovs_action_add_mpls {
	__be32 mpls_lse;
	__be16 mpls_ethertype; /* Either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC */
	__u16 tun_flags;
};

#define OVS_MPLS_L3_TUNNEL_FLAG_MASK  (1 << 0) /* Flag to specify the place of
						* insertion of MPLS header.
						* When false, the MPLS header
						* will be inserted at the start
						* of the packet.
						* When true, the MPLS header
						* will be inserted at the start
						* of the l3 header.
						*/

/**
 * 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 or %ETH_P_8021AD.
 * The only acceptable TPID values are those that the kernel module also parses
 * as 802.1Q or 802.1AD 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 or 802.1ad TPID. */
	__be16 vlan_tci;	/* 802.1Q TCI (VLAN ID and priority). */
};

/* Data path hash algorithm for computing Datapath hash.
 *
 * The algorithm type only specifies the fields in a flow
 * will be used as part of the hash. Each datapath is free
 * to use its own hash algorithm. The hash value will be
 * opaque to the user space daemon.
 */
enum ovs_hash_alg {
	OVS_HASH_ALG_L4,
	OVS_HASH_ALG_SYM_L4,
};

/*
 * struct ovs_action_hash - %OVS_ACTION_ATTR_HASH action argument.
 * @hash_alg: Algorithm used to compute hash prior to recirculation.
 * @hash_basis: basis used for computing hash.
 */
struct ovs_action_hash {
	__u32  hash_alg;     /* One of ovs_hash_alg. */
	__u32  hash_basis;
};

/**
 * enum ovs_ct_attr - Attributes for %OVS_ACTION_ATTR_CT action.
 * @OVS_CT_ATTR_COMMIT: If present, commits the connection to the conntrack
 * table. This allows future packets for the same connection to be identified
 * as 'established' or 'related'. The flow key for the current packet will
 * retain the pre-commit connection state.
 * @OVS_CT_ATTR_ZONE: u16 connection tracking zone.
 * @OVS_CT_ATTR_MARK: u32 value followed by u32 mask. For each bit set in the
 * mask, the corresponding bit in the value is copied to the connection
 * tracking mark field in the connection.
 * @OVS_CT_ATTR_LABELS: %OVS_CT_LABELS_LEN value followed by %OVS_CT_LABELS_LEN
 * mask. For each bit set in the mask, the corresponding bit in the value is
 * copied to the connection tracking label field in the connection.
 * @OVS_CT_ATTR_HELPER: variable length string defining conntrack ALG.
 * @OVS_CT_ATTR_NAT: Nested OVS_NAT_ATTR_* for performing L3 network address
 * translation (NAT) on the packet.
 * @OVS_CT_ATTR_FORCE_COMMIT: Like %OVS_CT_ATTR_COMMIT, but instead of doing
 * nothing if the connection is already committed will check that the current
 * packet is in conntrack entry's original direction.  If directionality does
 * not match, will delete the existing conntrack entry and commit a new one.
 * @OVS_CT_ATTR_EVENTMASK: Mask of bits indicating which conntrack event types
 * (enum ip_conntrack_events IPCT_*) should be reported.  For any bit set to
 * zero, the corresponding event type is not generated.  Default behavior
 * depends on system configuration, but typically all event types are
 * generated, hence listening on NFNLGRP_CONNTRACK_UPDATE events may get a lot
 * of events.  Explicitly passing this attribute allows limiting the updates
 * received to the events of interest.  The bit 1 << IPCT_NEW, 1 <<
 * IPCT_RELATED, and 1 << IPCT_DESTROY must be set to ones for those events to
 * be received on NFNLGRP_CONNTRACK_NEW and NFNLGRP_CONNTRACK_DESTROY groups,
 * respectively.  Remaining bits control the changes for which an event is
 * delivered on the NFNLGRP_CONNTRACK_UPDATE group.
 * @OVS_CT_ATTR_TIMEOUT: Variable length string defining conntrack timeout.
 */
enum ovs_ct_attr {
	OVS_CT_ATTR_UNSPEC,
	OVS_CT_ATTR_COMMIT,     /* No argument, commits connection. */
	OVS_CT_ATTR_ZONE,       /* u16 zone id. */
	OVS_CT_ATTR_MARK,       /* mark to associate with this connection. */
	OVS_CT_ATTR_LABELS,     /* labels to associate with this connection. */
	OVS_CT_ATTR_HELPER,     /* netlink helper to assist detection of
				   related connections. */
	OVS_CT_ATTR_NAT,        /* Nested OVS_NAT_ATTR_* */
	OVS_CT_ATTR_FORCE_COMMIT,  /* No argument */
	OVS_CT_ATTR_EVENTMASK,  /* u32 mask of IPCT_* events. */
	OVS_CT_ATTR_TIMEOUT,	/* Associate timeout with this connection for
				 * fine-grain timeout tuning. */
	__OVS_CT_ATTR_MAX
};

#define OVS_CT_ATTR_MAX (__OVS_CT_ATTR_MAX - 1)

/**
 * enum ovs_nat_attr - Attributes for %OVS_CT_ATTR_NAT.
 *
 * @OVS_NAT_ATTR_SRC: Flag for Source NAT (mangle source address/port).
 * @OVS_NAT_ATTR_DST: Flag for Destination NAT (mangle destination
 * address/port).  Only one of (@OVS_NAT_ATTR_SRC, @OVS_NAT_ATTR_DST) may be
 * specified.  Effective only for packets for ct_state NEW connections.
 * Packets of committed connections are mangled by the NAT action according to
 * the committed NAT type regardless of the flags specified.  As a corollary, a
 * NAT action without a NAT type flag will only mangle packets of committed
 * connections.  The following NAT attributes only apply for NEW
 * (non-committed) connections, and they may be included only when the CT
 * action has the @OVS_CT_ATTR_COMMIT flag and either @OVS_NAT_ATTR_SRC or
 * @OVS_NAT_ATTR_DST is also included.
 * @OVS_NAT_ATTR_IP_MIN: struct in_addr or struct in6_addr
 * @OVS_NAT_ATTR_IP_MAX: struct in_addr or struct in6_addr
 * @OVS_NAT_ATTR_PROTO_MIN: u16 L4 protocol specific lower boundary (port)
 * @OVS_NAT_ATTR_PROTO_MAX: u16 L4 protocol specific upper boundary (port)
 * @OVS_NAT_ATTR_PERSISTENT: Flag for persistent IP mapping across reboots
 * @OVS_NAT_ATTR_PROTO_HASH: Flag for pseudo random L4 port mapping (MD5)
 * @OVS_NAT_ATTR_PROTO_RANDOM: Flag for fully randomized L4 port mapping
 */
enum ovs_nat_attr {
	OVS_NAT_ATTR_UNSPEC,
	OVS_NAT_ATTR_SRC,
	OVS_NAT_ATTR_DST,
	OVS_NAT_ATTR_IP_MIN,
	OVS_NAT_ATTR_IP_MAX,
	OVS_NAT_ATTR_PROTO_MIN,
	OVS_NAT_ATTR_PROTO_MAX,
	OVS_NAT_ATTR_PERSISTENT,
	OVS_NAT_ATTR_PROTO_HASH,
	OVS_NAT_ATTR_PROTO_RANDOM,
	__OVS_NAT_ATTR_MAX,
};

#define OVS_NAT_ATTR_MAX (__OVS_NAT_ATTR_MAX - 1)

/*
 * struct ovs_action_push_eth - %OVS_ACTION_ATTR_PUSH_ETH action argument.
 * @addresses: Source and destination MAC addresses.
 * @eth_type: Ethernet type
 */
struct ovs_action_push_eth {
	struct ovs_key_ethernet addresses;
};

/*
 * enum ovs_check_pkt_len_attr - Attributes for %OVS_ACTION_ATTR_CHECK_PKT_LEN.
 *
 * @OVS_CHECK_PKT_LEN_ATTR_PKT_LEN: u16 Packet length to check for.
 * @OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER: Nested OVS_ACTION_ATTR_*
 * actions to apply if the packer length is greater than the specified
 * length in the attr - OVS_CHECK_PKT_LEN_ATTR_PKT_LEN.
 * @OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL - Nested OVS_ACTION_ATTR_*
 * actions to apply if the packer length is lesser or equal to the specified
 * length in the attr - OVS_CHECK_PKT_LEN_ATTR_PKT_LEN.
 */
enum ovs_check_pkt_len_attr {
	OVS_CHECK_PKT_LEN_ATTR_UNSPEC,
	OVS_CHECK_PKT_LEN_ATTR_PKT_LEN,
	OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER,
	OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL,
	__OVS_CHECK_PKT_LEN_ATTR_MAX,

};

#define OVS_CHECK_PKT_LEN_ATTR_MAX (__OVS_CHECK_PKT_LEN_ATTR_MAX - 1)

/**
 * enum ovs_action_attr - Action types.
 *
 * @OVS_ACTION_ATTR_OUTPUT: Output packet to port.
 * @OVS_ACTION_ATTR_TRUNC: Output packet to port with truncated packet size.
 * @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_SET_MASKED: Replaces the contents of an existing header.  A
 * nested %OVS_KEY_ATTR_* attribute specifies a header to modify, its value,
 * and a mask.  For every bit set in the mask, the corresponding bit value
 * is copied from the value to the packet header field, rest of the bits are
 * left unchanged.  The non-masked value bits must be passed in as zeroes.
 * Masking is not supported for the %OVS_KEY_ATTR_TUNNEL attribute.
 * @OVS_ACTION_ATTR_PUSH_VLAN: Push a new outermost 802.1Q or 802.1ad header
 * onto the packet.
 * @OVS_ACTION_ATTR_POP_VLAN: Pop the outermost 802.1Q or 802.1ad header
 * from the packet.
 * @OVS_ACTION_ATTR_SAMPLE: Probabilitically executes actions, as specified in
 * the nested %OVS_SAMPLE_ATTR_* attributes.
 * @OVS_ACTION_ATTR_PUSH_MPLS: Push a new MPLS label stack entry onto the
 * top of the packets MPLS label stack.  Set the ethertype of the
 * encapsulating frame to either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC to
 * indicate the new packet contents.
 * @OVS_ACTION_ATTR_POP_MPLS: Pop an MPLS label stack entry off of the
 * packet's MPLS label stack.  Set the encapsulating frame's ethertype to
 * indicate the new packet contents. This could potentially still be
 * %ETH_P_MPLS if the resulting MPLS label stack is not empty.  If there
 * is no MPLS label stack, as determined by ethertype, no action is taken.
 * @OVS_ACTION_ATTR_CT: Track the connection. Populate the conntrack-related
 * entries in the flow key.
 * @OVS_ACTION_ATTR_PUSH_ETH: Push a new outermost Ethernet header onto the
 * packet.
 * @OVS_ACTION_ATTR_POP_ETH: Pop the outermost Ethernet header off the
 * packet.
 * @OVS_ACTION_ATTR_CT_CLEAR: Clear conntrack state from the packet.
 * @OVS_ACTION_ATTR_PUSH_NSH: push NSH header to the packet.
 * @OVS_ACTION_ATTR_POP_NSH: pop the outermost NSH header off the packet.
 * @OVS_ACTION_ATTR_METER: Run packet through a meter, which may drop the
 * packet, or modify the packet (e.g., change the DSCP field).
 * @OVS_ACTION_ATTR_CLONE: make a copy of the packet and execute a list of
 * actions without affecting the original packet and key.
 * @OVS_ACTION_ATTR_CHECK_PKT_LEN: Check the packet length and execute a set
 * of actions if greater than the specified packet length, else execute
 * another set of actions.
 * @OVS_ACTION_ATTR_ADD_MPLS: Push a new MPLS label stack entry at the
 * start of the packet or at the start of the l3 header depending on the value
 * of l3 tunnel flag in the tun_flags field of OVS_ACTION_ATTR_ADD_MPLS
 * argument.
 *
 * 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.
 *
 * @OVS_ACTION_ATTR_SET_TO_MASKED: Kernel internal masked set action translated
 * from the @OVS_ACTION_ATTR_SET.
 */

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_RECIRC,       /* u32 recirc_id. */
	OVS_ACTION_ATTR_HASH,	      /* struct ovs_action_hash. */
	OVS_ACTION_ATTR_PUSH_MPLS,    /* struct ovs_action_push_mpls. */
	OVS_ACTION_ATTR_POP_MPLS,     /* __be16 ethertype. */
	OVS_ACTION_ATTR_SET_MASKED,   /* One nested OVS_KEY_ATTR_* including
				       * data immediately followed by a mask.
				       * The data must be zero for the unmasked
				       * bits. */
	OVS_ACTION_ATTR_CT,           /* Nested OVS_CT_ATTR_* . */
	OVS_ACTION_ATTR_TRUNC,        /* u32 struct ovs_action_trunc. */
	OVS_ACTION_ATTR_PUSH_ETH,     /* struct ovs_action_push_eth. */
	OVS_ACTION_ATTR_POP_ETH,      /* No argument. */
	OVS_ACTION_ATTR_CT_CLEAR,     /* No argument. */
	OVS_ACTION_ATTR_PUSH_NSH,     /* Nested OVS_NSH_KEY_ATTR_*. */
	OVS_ACTION_ATTR_POP_NSH,      /* No argument. */
	OVS_ACTION_ATTR_METER,        /* u32 meter ID. */
	OVS_ACTION_ATTR_CLONE,        /* Nested OVS_CLONE_ATTR_*.  */
	OVS_ACTION_ATTR_CHECK_PKT_LEN, /* Nested OVS_CHECK_PKT_LEN_ATTR_*. */
	OVS_ACTION_ATTR_ADD_MPLS,     /* struct ovs_action_add_mpls. */
	OVS_ACTION_ATTR_DEC_TTL,      /* Nested OVS_DEC_TTL_ATTR_*. */

__OVS_ACTION_ATTR_MAX,	      /* Nothing past this will be accepted
				       * from userspace. */

};

#define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1)

/* Meters. */
#define OVS_METER_FAMILY  "ovs_meter"
#define OVS_METER_MCGROUP "ovs_meter"
#define OVS_METER_VERSION 0x1

enum ovs_meter_cmd {
	OVS_METER_CMD_UNSPEC,
	OVS_METER_CMD_FEATURES,	/* Get features supported by the datapath. */
	OVS_METER_CMD_SET,	/* Add or modify a meter. */
	OVS_METER_CMD_DEL,	/* Delete a meter. */
	OVS_METER_CMD_GET	/* Get meter stats. */
};

enum ovs_meter_attr {
	OVS_METER_ATTR_UNSPEC,
	OVS_METER_ATTR_ID,	/* u32 meter ID within datapath. */
	OVS_METER_ATTR_KBPS,	/* No argument. If set, units in kilobits
				 * per second. Otherwise, units in
				 * packets per second.
				 */
	OVS_METER_ATTR_STATS,	/* struct ovs_flow_stats for the meter. */
	OVS_METER_ATTR_BANDS,	/* Nested attributes for meter bands. */
	OVS_METER_ATTR_USED,	/* u64 msecs last used in monotonic time. */
	OVS_METER_ATTR_CLEAR,	/* Flag to clear stats, used. */
	OVS_METER_ATTR_MAX_METERS, /* u32 number of meters supported. */
	OVS_METER_ATTR_MAX_BANDS,  /* u32 max number of bands per meter. */
	OVS_METER_ATTR_PAD,
	__OVS_METER_ATTR_MAX
};

#define OVS_METER_ATTR_MAX (__OVS_METER_ATTR_MAX - 1)

enum ovs_band_attr {
	OVS_BAND_ATTR_UNSPEC,
	OVS_BAND_ATTR_TYPE,	/* u32 OVS_METER_BAND_TYPE_* constant. */
	OVS_BAND_ATTR_RATE,	/* u32 band rate in meter units (see above). */
	OVS_BAND_ATTR_BURST,	/* u32 burst size in meter units. */
	OVS_BAND_ATTR_STATS,	/* struct ovs_flow_stats for the band. */
	__OVS_BAND_ATTR_MAX
};

#define OVS_BAND_ATTR_MAX (__OVS_BAND_ATTR_MAX - 1)

enum ovs_meter_band_type {
	OVS_METER_BAND_TYPE_UNSPEC,
	OVS_METER_BAND_TYPE_DROP,   /* Drop exceeding packets. */
	__OVS_METER_BAND_TYPE_MAX
};

#define OVS_METER_BAND_TYPE_MAX (__OVS_METER_BAND_TYPE_MAX - 1)

/* Conntrack limit */
#define OVS_CT_LIMIT_FAMILY  "ovs_ct_limit"
#define OVS_CT_LIMIT_MCGROUP "ovs_ct_limit"
#define OVS_CT_LIMIT_VERSION 0x1

enum ovs_ct_limit_cmd {
	OVS_CT_LIMIT_CMD_UNSPEC,
	OVS_CT_LIMIT_CMD_SET,		/* Add or modify ct limit. */
	OVS_CT_LIMIT_CMD_DEL,		/* Delete ct limit. */
	OVS_CT_LIMIT_CMD_GET		/* Get ct limit. */
};

enum ovs_ct_limit_attr {
	OVS_CT_LIMIT_ATTR_UNSPEC,
	OVS_CT_LIMIT_ATTR_ZONE_LIMIT,	/* Nested struct ovs_zone_limit. */
	__OVS_CT_LIMIT_ATTR_MAX
};

#define OVS_CT_LIMIT_ATTR_MAX (__OVS_CT_LIMIT_ATTR_MAX - 1)

#define OVS_ZONE_LIMIT_DEFAULT_ZONE -1

struct ovs_zone_limit {
	int zone_id;
	__u32 limit;
	__u32 count;
};

enum ovs_dec_ttl_attr {
	OVS_DEC_TTL_ATTR_UNSPEC,
	OVS_DEC_TTL_ATTR_ACTION,	/* Nested struct nlattr */
	__OVS_DEC_TTL_ATTR_MAX
};

#define OVS_DEC_TTL_ATTR_MAX (__OVS_DEC_TTL_ATTR_MAX - 1)

#endif /* _LINUX_OPENVSWITCH_H */

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