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netlink: specs: add ynl spec for ovs_flow
Add a ynl specification for ovs_flow. This spec is sufficient to dump ovs flows. Some attrs are left as binary blobs because ynl doesn't support C arrays in struct definitions yet. Signed-off-by: Donald Hunter <donald.hunter@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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1 changed files with 831 additions and 0 deletions
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Documentation/netlink/specs/ovs_flow.yaml
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831
Documentation/netlink/specs/ovs_flow.yaml
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# SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)
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name: ovs_flow
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version: 1
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protocol: genetlink-legacy
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doc:
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OVS flow configuration over generic netlink.
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definitions:
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-
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name: ovs-header
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type: struct
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doc: |
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Header for OVS Generic Netlink messages.
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members:
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-
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name: dp-ifindex
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type: u32
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doc: |
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ifindex of local port for datapath (0 to make a request not specific
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to a datapath).
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-
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name: ovs-flow-stats
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type: struct
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members:
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-
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name: n-packets
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type: u64
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doc: Number of matched packets.
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-
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name: n-bytes
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type: u64
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doc: Number of matched bytes.
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-
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name: ovs-key-mpls
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type: struct
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members:
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-
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name: mpls-lse
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type: u32
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byte-order: big-endian
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-
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name: ovs-key-ipv4
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type: struct
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members:
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-
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name: ipv4-src
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type: u32
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byte-order: big-endian
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-
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name: ipv4-dst
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type: u32
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byte-order: big-endian
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-
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name: ipv4-proto
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type: u8
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-
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name: ipv4-tos
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type: u8
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-
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name: ipv4-ttl
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type: u8
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-
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name: ipv4-frag
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type: u8
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enum: ovs-frag-type
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-
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name: ovs-frag-type
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type: enum
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entries:
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-
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name: none
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doc: Packet is not a fragment.
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-
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name: first
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doc: Packet is a fragment with offset 0.
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-
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name: later
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doc: Packet is a fragment with nonzero offset.
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-
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name: any
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value: 255
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-
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name: ovs-key-tcp
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type: struct
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members:
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-
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name: tcp-src
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type: u16
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byte-order: big-endian
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-
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name: tcp-dst
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type: u16
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byte-order: big-endian
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-
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name: ovs-key-udp
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type: struct
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members:
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-
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name: udp-src
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type: u16
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byte-order: big-endian
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-
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name: udp-dst
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type: u16
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byte-order: big-endian
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-
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name: ovs-key-sctp
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type: struct
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members:
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-
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name: sctp-src
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type: u16
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byte-order: big-endian
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-
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name: sctp-dst
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type: u16
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byte-order: big-endian
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-
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name: ovs-key-icmp
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type: struct
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members:
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-
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name: icmp-type
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type: u8
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-
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name: icmp-code
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type: u8
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-
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name: ovs-key-ct-tuple-ipv4
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type: struct
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members:
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-
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name: ipv4-src
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type: u32
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byte-order: big-endian
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-
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name: ipv4-dst
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type: u32
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byte-order: big-endian
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-
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name: src-port
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type: u16
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byte-order: big-endian
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-
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name: dst-port
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type: u16
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byte-order: big-endian
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-
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name: ipv4-proto
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type: u8
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-
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name: ovs-action-push-vlan
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type: struct
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members:
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-
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name: vlan_tpid
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type: u16
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byte-order: big-endian
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doc: Tag protocol identifier (TPID) to push.
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-
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name: vlan_tci
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type: u16
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byte-order: big-endian
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doc: Tag control identifier (TCI) to push.
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-
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name: ovs-ufid-flags
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type: flags
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entries:
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- omit-key
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- omit-mask
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- omit-actions
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-
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name: ovs-action-hash
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type: struct
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members:
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-
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name: hash-algorithm
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type: u32
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doc: Algorithm used to compute hash prior to recirculation.
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-
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name: hash-basis
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type: u32
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doc: Basis used for computing hash.
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-
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name: ovs-hash-alg
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type: enum
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doc: |
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Data path hash algorithm for computing Datapath hash. The algorithm type only specifies
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the fields in a flow will be used as part of the hash. Each datapath is free to use its
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own hash algorithm. The hash value will be opaque to the user space daemon.
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entries:
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- ovs-hash-alg-l4
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-
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name: ovs-action-push-mpls
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type: struct
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members:
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-
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name: lse
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type: u32
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byte-order: big-endian
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doc: |
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MPLS label stack entry to push
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-
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name: ethertype
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type: u32
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byte-order: big-endian
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doc: |
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Ethertype to set in the encapsulating ethernet frame. The only values
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ethertype should ever be given are ETH_P_MPLS_UC and ETH_P_MPLS_MC,
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indicating MPLS unicast or multicast. Other are rejected.
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-
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name: ovs-action-add-mpls
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type: struct
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members:
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-
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name: lse
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type: u32
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byte-order: big-endian
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doc: |
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MPLS label stack entry to push
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-
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name: ethertype
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type: u32
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byte-order: big-endian
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doc: |
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Ethertype to set in the encapsulating ethernet frame. The only values
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ethertype should ever be given are ETH_P_MPLS_UC and ETH_P_MPLS_MC,
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indicating MPLS unicast or multicast. Other are rejected.
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-
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name: tun-flags
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type: u16
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doc: |
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MPLS tunnel attributes.
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-
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name: ct-state-flags
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type: flags
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entries:
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-
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name: new
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doc: Beginning of a new connection.
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-
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name: established
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doc: Part of an existing connenction
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-
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name: related
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doc: Related to an existing connection.
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-
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name: reply-dir
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doc: Flow is in the reply direction.
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-
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name: invalid
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doc: Could not track the connection.
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-
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name: tracked
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doc: Conntrack has occurred.
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-
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name: src-nat
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doc: Packet's source address/port was mangled by NAT.
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-
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name: dst-nat
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doc: Packet's destination address/port was mangled by NAT.
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attribute-sets:
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-
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name: flow-attrs
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attributes:
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-
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name: key
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type: nest
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nested-attributes: key-attrs
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doc: |
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Nested attributes specifying the flow key. Always present in
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notifications. Required for all requests (except dumps).
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-
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name: actions
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type: nest
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nested-attributes: action-attrs
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doc: |
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Nested attributes specifying the actions to take for packets that
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match the key. Always present in notifications. Required for
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OVS_FLOW_CMD_NEW requests, optional for OVS_FLOW_CMD_SET requests. An
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OVS_FLOW_CMD_SET without OVS_FLOW_ATTR_ACTIONS will not modify the
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actions. To clear the actions, an OVS_FLOW_ATTR_ACTIONS without any
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nested attributes must be given.
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-
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name: stats
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type: binary
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struct: ovs-flow-stats
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doc: |
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Statistics for this flow. Present in notifications if the stats would
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be nonzero. Ignored in requests.
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-
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name: tcp-flags
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type: u8
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doc: |
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An 8-bit value giving the ORed value of all of the TCP flags seen on
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packets in this flow. Only present in notifications for TCP flows, and
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only if it would be nonzero. Ignored in requests.
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-
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name: used
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type: u64
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doc: |
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A 64-bit integer giving the time, in milliseconds on the system
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monotonic clock, at which a packet was last processed for this
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flow. Only present in notifications if a packet has been processed for
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this flow. Ignored in requests.
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-
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name: clear
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type: flag
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doc: |
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If present in a OVS_FLOW_CMD_SET request, clears the last-used time,
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accumulated TCP flags, and statistics for this flow. Otherwise
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ignored in requests. Never present in notifications.
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-
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name: mask
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type: nest
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nested-attributes: key-attrs
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doc: |
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Nested attributes specifying the mask bits for wildcarded flow
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match. Mask bit value '1' specifies exact match with corresponding
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flow key bit, while mask bit value '0' specifies a wildcarded
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match. Omitting attribute is treated as wildcarding all corresponding
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fields. Optional for all requests. If not present, all flow key bits
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are exact match bits.
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-
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name: probe
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type: binary
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doc: |
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Flow operation is a feature probe, error logging should be suppressed.
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-
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name: ufid
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type: binary
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doc: |
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A value between 1-16 octets specifying a unique identifier for the
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flow. Causes the flow to be indexed by this value rather than the
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value of the OVS_FLOW_ATTR_KEY attribute. Optional for all
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requests. Present in notifications if the flow was created with this
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attribute.
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-
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name: ufid-flags
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type: u32
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enum: ovs-ufid-flags
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doc: |
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A 32-bit value of ORed flags that provide alternative semantics for
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flow installation and retrieval. Optional for all requests.
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-
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name: pad
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type: binary
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-
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name: key-attrs
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attributes:
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-
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name: encap
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type: nest
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nested-attributes: key-attrs
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-
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name: priority
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type: u32
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-
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name: in-port
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type: u32
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-
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name: ethernet
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type: binary
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doc: struct ovs_key_ethernet
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-
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name: vlan
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type: u16
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byte-order: big-endian
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-
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name: ethertype
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type: u16
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byte-order: big-endian
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-
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name: ipv4
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type: binary
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struct: ovs-key-ipv4
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-
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name: ipv6
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type: binary
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doc: struct ovs_key_ipv6
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-
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name: tcp
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type: binary
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struct: ovs-key-tcp
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-
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name: udp
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type: binary
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struct: ovs-key-udp
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-
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name: icmp
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type: binary
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struct: ovs-key-icmp
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-
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name: icmpv6
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type: binary
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struct: ovs-key-icmp
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-
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name: arp
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type: binary
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doc: struct ovs_key_arp
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-
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name: nd
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type: binary
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doc: struct ovs_key_nd
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-
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name: skb-mark
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type: u32
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-
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name: tunnel
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type: nest
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nested-attributes: tunnel-key-attrs
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-
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name: sctp
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type: binary
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struct: ovs-key-sctp
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-
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name: tcp-flags
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type: u16
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byte-order: big-endian
|
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-
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name: dp-hash
|
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type: u32
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doc: Value 0 indicates the hash is not computed by the datapath.
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-
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name: recirc-id
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type: u32
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-
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name: mpls
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type: binary
|
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struct: ovs-key-mpls
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-
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name: ct-state
|
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type: u32
|
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enum: ct-state-flags
|
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enum-as-flags: true
|
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-
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name: ct-zone
|
||||
type: u16
|
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doc: connection tracking zone
|
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-
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name: ct-mark
|
||||
type: u32
|
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doc: connection tracking mark
|
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-
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name: ct-labels
|
||||
type: binary
|
||||
doc: 16-octet connection tracking label
|
||||
-
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name: ct-orig-tuple-ipv4
|
||||
type: binary
|
||||
struct: ovs-key-ct-tuple-ipv4
|
||||
-
|
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name: ct-orig-tuple-ipv6
|
||||
type: binary
|
||||
doc: struct ovs_key_ct_tuple_ipv6
|
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-
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name: nsh
|
||||
type: nest
|
||||
nested-attributes: ovs-nsh-key-attrs
|
||||
-
|
||||
name: packet-type
|
||||
type: u32
|
||||
byte-order: big-endian
|
||||
doc: Should not be sent to the kernel
|
||||
-
|
||||
name: nd-extensions
|
||||
type: binary
|
||||
doc: Should not be sent to the kernel
|
||||
-
|
||||
name: tunnel-info
|
||||
type: binary
|
||||
doc: struct ip_tunnel_info
|
||||
-
|
||||
name: ipv6-exthdrs
|
||||
type: binary
|
||||
doc: struct ovs_key_ipv6_exthdr
|
||||
-
|
||||
name: action-attrs
|
||||
attributes:
|
||||
-
|
||||
name: output
|
||||
type: u32
|
||||
doc: ovs port number in datapath
|
||||
-
|
||||
name: userspace
|
||||
type: nest
|
||||
nested-attributes: userspace-attrs
|
||||
-
|
||||
name: set
|
||||
type: nest
|
||||
nested-attributes: key-attrs
|
||||
doc: Replaces the contents of an existing header. The single nested attribute specifies a header to modify and its value.
|
||||
-
|
||||
name: push-vlan
|
||||
type: binary
|
||||
struct: ovs-action-push-vlan
|
||||
doc: Push a new outermost 802.1Q or 802.1ad header onto the packet.
|
||||
-
|
||||
name: pop-vlan
|
||||
type: flag
|
||||
doc: Pop the outermost 802.1Q or 802.1ad header from the packet.
|
||||
-
|
||||
name: sample
|
||||
type: nest
|
||||
nested-attributes: sample-attrs
|
||||
doc: |
|
||||
Probabilistically executes actions, as specified in the nested attributes.
|
||||
-
|
||||
name: recirc
|
||||
type: u32
|
||||
doc: recirc id
|
||||
-
|
||||
name: hash
|
||||
type: binary
|
||||
struct: ovs-action-hash
|
||||
-
|
||||
name: push-mpls
|
||||
type: binary
|
||||
struct: ovs-action-push-mpls
|
||||
doc: |
|
||||
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.
|
||||
-
|
||||
name: pop-mpls
|
||||
type: u16
|
||||
byte-order: big-endian
|
||||
doc: ethertype
|
||||
-
|
||||
name: set-masked
|
||||
type: nest
|
||||
nested-attributes: key-attrs
|
||||
doc: |
|
||||
Replaces the contents of an existing header. A nested 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.
|
||||
-
|
||||
name: ct
|
||||
type: nest
|
||||
nested-attributes: ct-attrs
|
||||
doc: |
|
||||
Track the connection. Populate the conntrack-related entries
|
||||
in the flow key.
|
||||
-
|
||||
name: trunc
|
||||
type: u32
|
||||
doc: struct ovs_action_trunc is a u32 max length
|
||||
-
|
||||
name: push-eth
|
||||
type: binary
|
||||
doc: struct ovs_action_push_eth
|
||||
-
|
||||
name: pop-eth
|
||||
type: flag
|
||||
-
|
||||
name: ct-clear
|
||||
type: flag
|
||||
-
|
||||
name: push-nsh
|
||||
type: nest
|
||||
nested-attributes: ovs-nsh-key-attrs
|
||||
doc: |
|
||||
Push NSH header to the packet.
|
||||
-
|
||||
name: pop-nsh
|
||||
type: flag
|
||||
doc: |
|
||||
Pop the outermost NSH header off the packet.
|
||||
-
|
||||
name: meter
|
||||
type: u32
|
||||
doc: |
|
||||
Run packet through a meter, which may drop the packet, or modify the
|
||||
packet (e.g., change the DSCP field)
|
||||
-
|
||||
name: clone
|
||||
type: nest
|
||||
nested-attributes: action-attrs
|
||||
doc: |
|
||||
Make a copy of the packet and execute a list of actions without
|
||||
affecting the original packet and key.
|
||||
-
|
||||
name: check-pkt-len
|
||||
type: nest
|
||||
nested-attributes: check-pkt-len-attrs
|
||||
doc: |
|
||||
Check the packet length and execute a set of actions if greater than
|
||||
the specified packet length, else execute another set of actions.
|
||||
-
|
||||
name: add-mpls
|
||||
type: binary
|
||||
struct: ovs-action-add-mpls
|
||||
doc: |
|
||||
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 this OVS_ACTION_ATTR_ADD_MPLS argument.
|
||||
-
|
||||
name: dec-ttl
|
||||
type: nest
|
||||
nested-attributes: dec-ttl-attrs
|
||||
-
|
||||
name: tunnel-key-attrs
|
||||
attributes:
|
||||
-
|
||||
name: id
|
||||
type: u64
|
||||
byte-order: big-endian
|
||||
value: 0
|
||||
-
|
||||
name: ipv4-src
|
||||
type: u32
|
||||
byte-order: big-endian
|
||||
-
|
||||
name: ipv4-dst
|
||||
type: u32
|
||||
byte-order: big-endian
|
||||
-
|
||||
name: tos
|
||||
type: u8
|
||||
-
|
||||
name: ttl
|
||||
type: u8
|
||||
-
|
||||
name: dont-fragment
|
||||
type: flag
|
||||
-
|
||||
name: csum
|
||||
type: flag
|
||||
-
|
||||
name: oam
|
||||
type: flag
|
||||
-
|
||||
name: geneve-opts
|
||||
type: binary
|
||||
sub-type: u32
|
||||
-
|
||||
name: tp-src
|
||||
type: u16
|
||||
byte-order: big-endian
|
||||
-
|
||||
name: tp-dst
|
||||
type: u16
|
||||
byte-order: big-endian
|
||||
-
|
||||
name: vxlan-opts
|
||||
type: nest
|
||||
nested-attributes: vxlan-ext-attrs
|
||||
-
|
||||
name: ipv6-src
|
||||
type: binary
|
||||
doc: |
|
||||
struct in6_addr source IPv6 address
|
||||
-
|
||||
name: ipv6-dst
|
||||
type: binary
|
||||
doc: |
|
||||
struct in6_addr destination IPv6 address
|
||||
-
|
||||
name: pad
|
||||
type: binary
|
||||
-
|
||||
name: erspan-opts
|
||||
type: binary
|
||||
doc: |
|
||||
struct erspan_metadata
|
||||
-
|
||||
name: ipv4-info-bridge
|
||||
type: flag
|
||||
-
|
||||
name: check-pkt-len-attrs
|
||||
attributes:
|
||||
-
|
||||
name: pkt-len
|
||||
type: u16
|
||||
-
|
||||
name: actions-if-greater
|
||||
type: nest
|
||||
nested-attributes: action-attrs
|
||||
-
|
||||
name: actions-if-less-equal
|
||||
type: nest
|
||||
nested-attributes: action-attrs
|
||||
-
|
||||
name: sample-attrs
|
||||
attributes:
|
||||
-
|
||||
name: probability
|
||||
type: u32
|
||||
-
|
||||
name: actions
|
||||
type: nest
|
||||
nested-attributes: action-attrs
|
||||
-
|
||||
name: userspace-attrs
|
||||
attributes:
|
||||
-
|
||||
name: pid
|
||||
type: u32
|
||||
-
|
||||
name: userdata
|
||||
type: binary
|
||||
-
|
||||
name: egress-tun-port
|
||||
type: u32
|
||||
-
|
||||
name: actions
|
||||
type: flag
|
||||
-
|
||||
name: ovs-nsh-key-attrs
|
||||
attributes:
|
||||
-
|
||||
name: base
|
||||
type: binary
|
||||
-
|
||||
name: md1
|
||||
type: binary
|
||||
-
|
||||
name: md2
|
||||
type: binary
|
||||
-
|
||||
name: ct-attrs
|
||||
attributes:
|
||||
-
|
||||
name: commit
|
||||
type: flag
|
||||
-
|
||||
name: zone
|
||||
type: u16
|
||||
-
|
||||
name: mark
|
||||
type: binary
|
||||
-
|
||||
name: labels
|
||||
type: binary
|
||||
-
|
||||
name: helper
|
||||
type: string
|
||||
-
|
||||
name: nat
|
||||
type: nest
|
||||
nested-attributes: nat-attrs
|
||||
-
|
||||
name: force-commit
|
||||
type: flag
|
||||
-
|
||||
name: eventmask
|
||||
type: u32
|
||||
-
|
||||
name: timeout
|
||||
type: string
|
||||
-
|
||||
name: nat-attrs
|
||||
attributes:
|
||||
-
|
||||
name: src
|
||||
type: binary
|
||||
-
|
||||
name: dst
|
||||
type: binary
|
||||
-
|
||||
name: ip-min
|
||||
type: binary
|
||||
-
|
||||
name: ip-max
|
||||
type: binary
|
||||
-
|
||||
name: proto-min
|
||||
type: binary
|
||||
-
|
||||
name: proto-max
|
||||
type: binary
|
||||
-
|
||||
name: persistent
|
||||
type: binary
|
||||
-
|
||||
name: proto-hash
|
||||
type: binary
|
||||
-
|
||||
name: proto-random
|
||||
type: binary
|
||||
-
|
||||
name: dec-ttl-attrs
|
||||
attributes:
|
||||
-
|
||||
name: action
|
||||
type: nest
|
||||
nested-attributes: action-attrs
|
||||
-
|
||||
name: vxlan-ext-attrs
|
||||
attributes:
|
||||
-
|
||||
name: gbp
|
||||
type: u32
|
||||
|
||||
operations:
|
||||
fixed-header: ovs-header
|
||||
list:
|
||||
-
|
||||
name: flow-get
|
||||
doc: Get / dump OVS flow configuration and state
|
||||
value: 3
|
||||
attribute-set: flow-attrs
|
||||
do: &flow-get-op
|
||||
request:
|
||||
attributes:
|
||||
- dp-ifindex
|
||||
- key
|
||||
- ufid
|
||||
- ufid-flags
|
||||
reply:
|
||||
attributes:
|
||||
- dp-ifindex
|
||||
- key
|
||||
- ufid
|
||||
- mask
|
||||
- stats
|
||||
- actions
|
||||
dump: *flow-get-op
|
||||
|
||||
mcast-groups:
|
||||
list:
|
||||
-
|
||||
name: ovs_flow
|
Loading…
Reference in a new issue