Internet DRAFT - draft-haleplidis-forces-openflow-lib
draft-haleplidis-forces-openflow-lib
Internet Engineering Task Force E.H. Haleplidis
Internet-Draft University of Patras
Intended status: Informational O.C. Cherkaoui
Expires: October 27, 2013 University of Quebec in Montreal
S.H. Hares
Huawei
W.M.W. Wang
Zhejiang Gongshang University
April 25, 2013
Forwarding and Control Element Separation (ForCES) OpenFlow Model
Library
draft-haleplidis-forces-openflow-lib-03
Abstract
This document describes the OpenFlow switch in Logical Function
Blocks (LFBs) used in the Forwarding and Control Element Separation
(ForCES). The LFB classes are defined according to the ForCES
Forwading Element (FE) model and ForCES protocol specifications. The
library includes the descriptions of the OpenFlow LFBs and the XML
definitions.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
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This Internet-Draft will expire on October 27, 2013.
Copyright Notice
Copyright (c) 2013 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1. ForCES . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2. OpenFlow . . . . . . . . . . . . . . . . . . . . . . . . 5
2. Terminology and Conventions . . . . . . . . . . . . . . . . . 5
2.1. Requirements Language . . . . . . . . . . . . . . . . . . 5
2.2. Definitions . . . . . . . . . . . . . . . . . . . . . . . 5
3. OpenFlow ForCES library . . . . . . . . . . . . . . . . . . . 8
3.1. OpenFlow Specification . . . . . . . . . . . . . . . . . 8
3.2. ForCES-based OpenFlow Specification . . . . . . . . . . . 10
4. OpenFlow Base Types . . . . . . . . . . . . . . . . . . . . . 18
4.1. Data Types . . . . . . . . . . . . . . . . . . . . . . . 18
4.1.1. Atomic . . . . . . . . . . . . . . . . . . . . . . . 18
4.1.2. Compound Struct . . . . . . . . . . . . . . . . . . . 19
4.1.3. Compound Array . . . . . . . . . . . . . . . . . . . 21
4.2. Frame Types . . . . . . . . . . . . . . . . . . . . . . . 21
4.3. MetaData Types . . . . . . . . . . . . . . . . . . . . . 21
5. OpenFlow LFBs . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1. OpenFlowSwitch . . . . . . . . . . . . . . . . . . . . . 23
5.1.1. Data Handling . . . . . . . . . . . . . . . . . . . . 23
5.1.2. Components . . . . . . . . . . . . . . . . . . . . . 23
5.1.3. Capabilities . . . . . . . . . . . . . . . . . . . . 24
5.1.4. Events . . . . . . . . . . . . . . . . . . . . . . . 24
5.2. OFFlowTables . . . . . . . . . . . . . . . . . . . . . . 25
5.2.1. Data Handling . . . . . . . . . . . . . . . . . . . . 25
5.2.2. Components . . . . . . . . . . . . . . . . . . . . . 26
5.2.3. Capabilities . . . . . . . . . . . . . . . . . . . . 27
5.2.4. Events . . . . . . . . . . . . . . . . . . . . . . . 27
5.3. OFGroupTable . . . . . . . . . . . . . . . . . . . . . . 27
5.3.1. Data Handling . . . . . . . . . . . . . . . . . . . . 27
5.3.2. Components . . . . . . . . . . . . . . . . . . . . . 28
5.3.3. Capabilities . . . . . . . . . . . . . . . . . . . . 28
5.3.4. Events . . . . . . . . . . . . . . . . . . . . . . . 28
5.4. OFPort . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.4.1. Data Handling . . . . . . . . . . . . . . . . . . . . 28
5.4.2. Components . . . . . . . . . . . . . . . . . . . . . 28
5.4.3. Capabilities . . . . . . . . . . . . . . . . . . . . 29
5.4.4. Events . . . . . . . . . . . . . . . . . . . . . . . 29
5.5. OFQueue . . . . . . . . . . . . . . . . . . . . . . . . . 29
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5.5.1. Data Handling . . . . . . . . . . . . . . . . . . . . 30
5.5.2. Components . . . . . . . . . . . . . . . . . . . . . 30
5.5.3. Capabilities . . . . . . . . . . . . . . . . . . . . 30
5.5.4. Events . . . . . . . . . . . . . . . . . . . . . . . 30
5.6. OFRedirectIn . . . . . . . . . . . . . . . . . . . . . . 30
5.6.1. Data Handling . . . . . . . . . . . . . . . . . . . . 30
5.6.2. Components . . . . . . . . . . . . . . . . . . . . . 31
5.6.3. Capabilities . . . . . . . . . . . . . . . . . . . . 31
5.6.4. Events . . . . . . . . . . . . . . . . . . . . . . . 31
5.7. OFRedirectOut . . . . . . . . . . . . . . . . . . . . . . 31
5.7.1. Data Handling . . . . . . . . . . . . . . . . . . . . 31
5.7.2. Components . . . . . . . . . . . . . . . . . . . . . 31
5.7.3. Capabilities . . . . . . . . . . . . . . . . . . . . 31
5.7.4. Events . . . . . . . . . . . . . . . . . . . . . . . 31
5.8. OFActionSet . . . . . . . . . . . . . . . . . . . . . . . 31
5.8.1. Data Handling . . . . . . . . . . . . . . . . . . . . 32
5.8.2. Components . . . . . . . . . . . . . . . . . . . . . 32
5.8.3. Capabilities . . . . . . . . . . . . . . . . . . . . 32
5.8.4. Events . . . . . . . . . . . . . . . . . . . . . . . 32
5.9. OFBuffer . . . . . . . . . . . . . . . . . . . . . . . . 32
5.9.1. Data Handling . . . . . . . . . . . . . . . . . . . . 32
5.9.2. Components . . . . . . . . . . . . . . . . . . . . . 33
5.9.3. Capabilities . . . . . . . . . . . . . . . . . . . . 33
5.9.4. Events . . . . . . . . . . . . . . . . . . . . . . . 33
5.10. OFAction . . . . . . . . . . . . . . . . . . . . . . . . 33
5.10.1. Data Handling . . . . . . . . . . . . . . . . . . . 33
5.10.2. Components . . . . . . . . . . . . . . . . . . . . . 34
5.10.3. Capabilities . . . . . . . . . . . . . . . . . . . . 34
5.10.4. Events . . . . . . . . . . . . . . . . . . . . . . . 34
5.11. OFActionLFBs . . . . . . . . . . . . . . . . . . . . . . 34
5.11.1. OFActionOutput . . . . . . . . . . . . . . . . . . . 34
5.11.2. OFActionSetVLANVID . . . . . . . . . . . . . . . . . 35
5.11.3. OFActionSetVLANPriority . . . . . . . . . . . . . . 35
5.11.4. OFActionSetMACSource . . . . . . . . . . . . . . . . 35
5.11.5. OFActionSetMACDestination . . . . . . . . . . . . . 35
5.11.6. OFActionSetIPSource . . . . . . . . . . . . . . . . 36
5.11.7. OFActionSetIPDestination . . . . . . . . . . . . . . 36
5.11.8. OFActionSetIPTOS . . . . . . . . . . . . . . . . . . 36
5.11.9. OFActionSetIPECN . . . . . . . . . . . . . . . . . . 36
5.11.10. OFActionSetTCPSource . . . . . . . . . . . . . . . . 37
5.11.11. OFActionSetTCPDestination . . . . . . . . . . . . . 37
5.11.12. OFActionCopyTTLOut . . . . . . . . . . . . . . . . . 37
5.11.13. OFActionCopyTTLIn . . . . . . . . . . . . . . . . . 37
5.11.14. OFActionSetMPLSLabel . . . . . . . . . . . . . . . . 38
5.11.15. OFActionSetMPLSTC . . . . . . . . . . . . . . . . . 38
5.11.16. OFActionSetMPLSTTL . . . . . . . . . . . . . . . . . 38
5.11.17. OFActionDecrementMPLSTTL . . . . . . . . . . . . . . 38
5.11.18. OFActionPushVLan . . . . . . . . . . . . . . . . . . 39
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5.11.19. OFActionPopVLAN . . . . . . . . . . . . . . . . . . 39
5.11.20. OFPushMPLSOFAction . . . . . . . . . . . . . . . . . 39
5.11.21. OFPopMPLSOFAction . . . . . . . . . . . . . . . . . 39
5.11.22. OFSetQueueOFAction . . . . . . . . . . . . . . . . . 40
5.11.23. OFSetIPTTLOFAction . . . . . . . . . . . . . . . . . 40
5.11.24. OFDecrementIPTTLOFAction . . . . . . . . . . . . . . 40
5.11.25. OFExperimenterOFAction . . . . . . . . . . . . . . . 40
6. XML for OpenFlow library . . . . . . . . . . . . . . . . . . 41
7. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 94
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 94
9. Security Considerations . . . . . . . . . . . . . . . . . . . 94
10. References . . . . . . . . . . . . . . . . . . . . . . . . . 94
10.1. Normative References . . . . . . . . . . . . . . . . . . 94
10.2. Informative References . . . . . . . . . . . . . . . . . 95
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 96
1. Introduction
The purpose of this document is to create a library of Logical
Functional Blocks that are necessary to describe an OpenFlow switch
using the ForCES model. This includes DataTypes, MetaData and of
course the LFBs.
Readers of this document can get a better understanding of what are
the internal parts of an OpenFlow switch in a more formal approach.
Additionally having a ForCES-defined OpenFlow switch allows
developers to build a ForCES FE that is based on the OF switch model
or even a middleware so that ForCES-implemented OpenFlow switches may
be controlled by an OpenFlow controller, or a ForCES Control Element
(CE) may control OpenFlow switches
1.1. ForCES
ForCES [RFC3746], focuses on the communication and model necessary to
separate control-plane functionality such as routing protocols,
signaling protocols, and admission control, from data-forwarding-
plane per-packet activities, such as packet forwarding, queuing, and
header editing.
The modeling of FEs is based on an abstraction using distinct Logical
Functional Blocks (LFBs), which are interconnected in a directed
graph, and receive, process, modify, and transmit packets along with
metadata. An LFB is a block of encapsulated fine-grained operation
of the forwarding plane. The ForCES model [RFC5812] additionally
includes both a capability and a state model. One of the advantages
of the ForCES Model is that it is independent of the actual
implementation of the FE; it only provides a view of its capabilities
and state that can be acted upon using the ForCES protocol. It is
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left to the forwarding plane developers to define how the FE
functionality is represented using the model.
As the OpenFlow library document requires complex metadata, the
[I-D.haleplidis-forces-model-extension] is used.
The ForCES protocol [RFC5810] was developed to allow the CEs to
determine the capabilities of each FE expressed by the FE model, to
add and remove entries, parameters, query for statistics, and
register for and receive events in a scalable fashion over secure and
reliable means. The strength of the ForCES protocol stems from the
fact that it is agnostic of the model, as a CE can control any
Forwarding Element described with the ForCES model.
1.2. OpenFlow
OpenFlow [OpenFlowSpec1.1] is conceptually similar to ForCES on
separating the control and forwarding plane. It provides a protocol
that mediates between the controller and the switch. Unlike ForCES,
the OpenFlow switch is statically defined to deal with flows and the
protocol is aware of the flow components. An OpenFlow Switch
consists of one or more flow tables, a group table that performs
packet lookups and forwarding, and an OpenFlow channel to an external
controller. A flow table is consisted of flow entries, each
containing a set of match fields to match against packets, counters
and instructions. The controller manages the switch via the OpenFlow
protocol. Using this protocol, the controller can add, update, and
delete flow and group entries.
2. Terminology and Conventions
2.1. Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in [RFC2119].
2.2. Definitions
This document follows the terminology defined by ForCES related
documents of RFC3654, RFC3746, RFC5810,RFC5811,RFC5812,RFC5812. The
definitions are repeated below for clarity. Also additional
definitions from the OpenFlow specification 1.1 [OpenFlowSpec1.1] are
also included.
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Control Element (CE) - A logical entity that implements the ForCES
protocol and uses it to instruct one or more FEs on how to process
packets. CEs handle functionality such as the execution of
control and signaling protocols.
Forwarding Element (FE) - A logical entity that implements the
ForCES protocol. FEs use the underlying hardware to provide per-
packet processing and handling as directed/controlled by one or
more CEs via the ForCES protocol.
LFB (Logical Functional Block) - The basic building block that is
operated on by the ForCES protocol. The LFB is a well defined,
logically separable functional block that resides in an FE and is
controlled by the CE via the ForCES protocol. The LFB may reside
at the FE's datapath and process packets or may be purely an FE
control or configuration entity that is operated on by the CE.
Note that the LFB is a functionally accurate abstraction of the
FE's processing capabilities, but not a hardware-accurate
representation of the FE implementation.
LFB Class and LFB Instance - LFBs are categorized by LFB Classes.
An LFB Instance represents an LFB Class (or Type) existence.
There may be multiple instances of the same LFB Class (or Type) in
an FE. An LFB Class is represented by an LFB Class ID, and an LFB
Instance is represented by an LFB Instance ID. As a result, an
LFB Class ID associated with an LFB Instance ID uniquely specifies
an LFB existence.
LFB Metadata - Metadata is used to communicate per-packet state
from one LFB to another, but is not sent across the network. The
FE model defines how such metadata is identified, produced, and
consumed by the LFBs. It defines the functionality but not how
metadata is encoded within an implementation.
LFB Components - Operational parameters of the LFBs that must be
visible to the CEs are conceptualized in the FE model as the LFB
components. The LFB components include, for example, flags,
single-parameter arguments, complex arguments, and tables that the
CE can read and/or write via the ForCES protocol (see below).
ForCES Protocol - While there may be multiple protocols used
within the overall ForCES architecture, the term "ForCES protocol"
and "protocol" refer to the "Fp" reference points in the ForCES
framework in [RFC3746]. This protocol does not apply to CE-to-CE
communication, FE-to-FE communication, or to communication between
FE and CE managers. Basically, the ForCES protocol works in a
master-slave mode in which FEs are slaves and CEs are masters.
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ForCES Protocol Transport Mapping Layer (ForCES TML) - A layer in
ForCES protocol architecture that uses the capabilities of
existing transport protocols to specifically address protocol
message transportation issues, such as how the protocol messages
are mapped to different transport media (like TCP, IP, ATM,
Ethernet, etc.), and how to achieve and implement reliability,
multicast, ordering, etc. The ForCES TML specifications are
detailed in separate ForCES documents, one for each TML.
Match Field - a field against which a packet is matched, including
packet headers, the ingress port, and the metadata value.
Action - an operation that forwards the packet to a port or
modifies the packet, such as decrementing the TTL field. Actions
may be specified as part of the instruction set associated with a
flow entry or in an action bucket associated with a group entry.
Flow entry - an element in a flow table used to match and process
packets. It contains a set of match fields for matching packets,
a set of counters to track packets, and a set of instructions to
apply.
Instruction - an operation that either contains a set of actions
to add to the action set, contains a list of actions to apply
immediately to the packet, or modifies pipeline processing.
Flow Table - A stage of the pipeline, contains flow entries.
OpenFlow pipeline - the set of linked flow tables that provide
matching, forwarding, and packet modifications in an OpenFlow
switch.
Groups - a list of action buckets and some means of choosing one
or more of those buckets to apply on a per-packet basis.
Group Entry - an element in a group table. It contains a group
identifier to distinguish groups, a group type to define the type
of the group, a set of counters to track packets, and a set of
action buckets.
Action Bucket - a set of actions and associated parameters,
defined for groups.
Action Set - a set of actions associated with the packet that are
accumulated while the packet is processed by each table and that
are executed when the instruction set instructs the packet to exit
the processing pipeline.
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Ports - where packets enter and exit the OpenFlow pipeline. May
be a physical port, a logical port defined by the switch, or a
reserved port defined by the specification.
3. OpenFlow ForCES library
3.1. OpenFlow Specification
An OpenFlow switch as described in the OpenFlow Specification
document [OpenFlowSpec1.1] appears in Figure 1
+---------+ +---------+ +---------+
| | | | | |
| Port | | Group | | Port |
| | | Table | | |
+---------+ +---------+ +---------+
| M1 /\
| M2 |
\/ |
+---------+ +---------+ +---------+ +---------+
| | M1 | | M1 | | M2 | Execute |
| Flow | ---> | Flow | -->...---> | Flow | ---> | Action |
| Table 0 | M2 | Table 1 | M2 | Table N | | Set |
+---------+ M3 +---------+ M3 +---------+ +---------+
Legend
M1: Ingress Port
M2: Action Set{}
M3: Metadata
Figure 1: OpenFlow switch datapath
A packet enters the switch through a Port and is passed on the first
Flow Table along with the Ingress Port as a Metadata (M1).
Additionally each frame carries around a list of actions, called
Action Set (M2), which have initially no actions in it. The Action
Set will be executed at the end of the DataPath in the Execute Action
Set block. After the first Flow Table another metadata called
Metadata (M3) also accompanies the packet. This data inside the
metadata maybe written by the Flow Tables when the Write Metadata
instruction is applied.
Each Flow Table performs a match based on certain fields (e.g IP
Source Address or Source MAC Address) and then perform a specific
instruction if there is a match. If no match occurs, the frame is
processed based on the Flow Table's configuration. The choices are
either:
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a. Forward to the OpenFlow controller
b. Send to the next flow table
c. Drop the frame
The list of instructions a Flow Table may perform upon a match are:
o Apply a List of actions
o Clear the Action Set
o Write actions on the action set
o Write Metadata
o Go to Flow Table (allows a FlowTable X to send the packet and
metadata to any FlowTable Y, provided that X>Y)
In OpenFlow there are two types of action executions which are
independent of each other. The first one refered to as action list
and is programmed into the flow table to be executed immediately
within the packet pipeline upon a match on a flow table. The second
one gets executed at the end of the pipeline in the execute action
set. The second type of actions is collected in a metadata refered
to as Action Set during the datapath processing with hte Write
Actions instruction.
The type of actions the Flow Table can perform or write in the Action
Set is:
o Setting of a field (e.g. IP address, MAC address)
o Push or Pop tags (VLAN, MPLS)
o Copy TTL inwards or outwards
o Decrease TTLs
o Output the packet to ports (a copy of the original packet will be
sent to the port)
o Apply QoS to a packet
o Apply the packet to a group (a copy of the original packet will be
sent to the group)
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Additionally a Flow Table may drop the packet. The drop is implicit
based on the Flow Table's configuration (e.g. when there are no more
instructions).
An Action Set MUST contains a maximum of one action of each of the
following class of types which MUST be executed in the order
specified below regardless of the order they were added to the Action
Set. The output action in the action set is executed last. If both
an output action and a group action are specified in an action set,
the output action is ignored and the group action takes precedence.
If no output action and no group action were specified in an action
set, the packet is dropped.
1. Copy TTL inwards
2. Pop a tag (maximum one of VLAN tag, MPLS tag)
3. Push a tags (maximum one of VLAN tag, MPLS tag)
4. Copy TTL outwards
5. Decrease TTL
6. Setting of a field (maximum one of set IP address, set VLAN ID,
etc...)
7. Apply QoS to a packet
8. Apply the packet to a group
9. Output the packet
The Group Table contains a set of Group Entries, each of which
contains a set of Action Buckets, each of which contains a set of
actions which can be applied to a group of packets that don't have
the same set of matching fields. This alleviates the problem of
having to set up the same set of actions in flow tables for different
set of matching fields by having these set of actions in one place
only.
3.2. ForCES-based OpenFlow Specification
ForCES models FEs using LFBs, fine-grained operations of the
forwarding plane. It is logical to have at least the following LFB
classes:
1. OFPort
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2. OFFlowTables
3. OFGroupTable
4. OFActionSet
5. OFActions
6. OFQueue
Additionally packets may be sent to the controller or the controller
may send packets to the switch to be put on the datapath. RedirectIn
and RedirectOut are two LFBs defined in the Base LFB Library
[I-D.ietf-forces-lfb-lib]. However as some more metadata are
required for the OpenFlow switch, the OFRedirectIn and OFRedirectOut
will be defined by extending the initial LFBs. The controller may
request the switch, if the switch is capable, instead of redirecting
packets to the controller instead to buffer them and send a specific
amount of the packet to the controller. For this task we introduce
the OFBuffer LFB.
While it may seem that having multiple OFFlowTables instances to
represent each Flow Table in the OpenFlow, the authors decided to
model the OFFlowTables to contain all the Flow Tables in one instance
of the OFFlowTables. On of the OFFlowTables's components is an array
of Flow Tables entries and each entry contains its own Flow Entries,
Flow Table Counter and Miss Behaviour. The index of the Flow Tables
entry represents the Flow Table ID. The rationale behind such a
decision is the simplification of the model. With multiple
ActionLFBs and multiple FlowTables, the resulting connection graph
between Flow Tables and FlowTables and ActionLFBs would be very
complex. Addionally this simplifies also the metadata Metadata which
is invisible to the model as it only passed between Flow
Tables.Figure 2 shows an example of how the OFFlowTables is
internally.
| From /\To OFOutput /\To Group /\To Redirect
| OFPorts | Action | Table | Out
+----|---------------|--------------------|--------------|----------+
| | | | | |
| | +-----------+--------------------+--------------+ |
| \/ | | | | |
| +--------+ +--------+ +--------+ +--------+ |
| | | --> | | | | | | |
| | Flow | | Flow |--+---+--> | Flow |-+--+->| Flow | |
| | Table 0|--+ | Table 1| | /\ | Table 2| /\ /\ | Table N| |
| +--------+ | +--------+ | | +--------+ | | +--------+ |
| /\ /\ | /\ | | | /\ | | | /\ |
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| | | | | | +----------|---|----+ | | |
| | | | | | | | | | | |
| | | +----|---+---------+------|---+-------+ | |
| | | | | | |
| | +----------+-------------+------+-------------------+ |
| | | |
+---|----------------------------|----------------------------------+
|From | To/From
|Redirect In \/OFActions
Figure 2: FlowTable Internal
Figure 3 depicts what an OFFlowTables with its own set of ActionLFBs
would look like. Figure 4 depicts how the OFFlowTables work with a
shared set of ActionLFBs with the OFGroupTable LFB look like.
+------+ M1,M2,M3 M1,M2,M3 +---------+
| Push | P(2) P(1) | Set |
| Vlan |<----------+ +----------->| IP |
|Header| | | | Address |
+------+ | | +---------+
| | | |
| P(3),M1 +--------+ P(2),M1 |
+------------>| |<------------+
| |
---------------------->| OFFlow |---------------------->
P | Tables | P(3)
| |
+---------+ P,M1,M2 | |
| | <------- | | Legend:
|Decrement| | | P: Packet
| IP TTL | +--------+ M1: PacketID
| | P(1),M1 /\ M2: LFBClassID
+---------+ -------------+ M3: ActionIndex
Figure 3: ForCES FlowTable with each own set of ActionLFBs
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A packet P enters the OFFlowTables from an OFPortLFB. If a match
occurs for the packet within the OFFlowTables and if the instruction
for that match is an "Apply Action List" then the actions must be
performed immediately and in the order specified in the action list.
Alongside the packet, some metadata are passed as well. M1, the
PacketID required by the OFFlowTables to identify the packet and
continue exectution from where it stopped when it returns, M2 the
LFBClassID so that the ActionLFB knows the ClassID of the LFB to
return the packet and M3 the ActionIndex required in some ActionLFBs
to determine parameters for the action. For example in Figure 3
let's assume that the action list includes the following four
actions:
1. Decrement IP TTL
2. Set IP Address
3. Push VLAN header
4. Final Action
The packet P will be first sent to the Decrement IP TTL Action LFB.
Upon completion it will be returned as P1 to the OFFlowTables and
then will be sent to the Set IP Address LFB. Upon return as P2 it
will be sent to the Push VLAN Header and returned finally as P3 to
the Flow Table LFB. Then depending upon the final action the packet
may:
o A copy of P3 will be sent to a Port LFB if it is an output action
and the action set will be executed.
o A copy of P3 will be sent to the Group LFB if it is an group
action and the action set will be executed.
o Remain in the OFFlowTables and checked for a match in the Flow
Table specified by a Goto action if it is a goto action.
+---------+ P(1),M1,M2,M3
| Set IP |<-----------------+
| Address | |
| |--------------+ |
+---------+ P(2),M1 | |
| |
| |
P(2),M1 \/ |
+------+ M2,M3 +---------+
| Push |<-----------| Group | P3
| Vlan | | Table |------->
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|Header|----------->| |
+------+ P(3),M1 +---------+
P /\ | P(1) /\
M1 | | |
M2 | |P(1),M1 |
M3 | \/ |
+--------+ | Legend:
P | |----------------+ P: Packet
----->| OFFlow | M1: PacketID
| Tables |----------------> M2: LFBClassID
+--------+ P(1) M3: ActionIndex
Figure 4: ForCES FlowTables and GroupTable with a common ActionLFB
A packet enters the OFFlowTables from an OFPortLFB. If a match
occurs for the packet within the OFFlowTables and if the instruction
for that match is an "Apply Action List" then the actions must be
performed immediately and in the order specified in the action list.
For example in Figure 4 let's assume that the action list includes
the following three actions:
1. Push VLAN Header
2. Group
3. Output
The packet P will be first sent to the Push VLAN header Action LFB
and upon completion will be returned as P1 to the OFFlowTables. Then
a copy of P1 will be sent to the Group Table LFB and then finally a
copy of P1 will be sent to the Port LFB for output and the action set
will be executed.
Let's assume that the following actions will be executed for P1 in
the action bucket in the Group Table.
1. Set IP Address
2. Push Vlan Header
3. Output
The packet P1 will be sent to the Set IP Address Action LFB and upon
completion will be returned as P2 to the Group Table. Then the
packet P2 will be sent to the Push Vlan Header Action LFB and be
returned as P3 to the Group Table and be sent to the Port LFB for
output.
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Regarding the OFActions, when a match occurs in the OFFlowTables or
an action bucket must be executed in the OFGroupTable it may contain
multiple actions, it seems reasonable to separate each action as an
individual LFB that performs that specific action. For every action
needed to be executed, the OFFlowTables or the OFGroupTable will send
the frame to the appropriate action LFB(s) in the order defined
either by the Action Bucket or the instructions in the OFFlowTables's
match entry. Once the packet has been processed from an Action LFB,
it MUST be returned to the LFB instance that made that call.
OFFlowTables and OFGroupTable LFB may either have shared ActionLFBs
or separate.
Current specified Action LFBs are:
Output Actions
o OFActionOutput
Set Queue Actions
o OFActionSetQueue
Push/Pop Tag Actions
o OFActionPushVLan
o OFActionPopVLAN
o OFActionPushMPLS
o OFActionPopMPLS
Set Actions
o OFActionSetMACSource
o OFActionSetMACDestination
o OFActionSetVLANVID
o OFActionSetVLANPriority
o OFActionSetMPLSLabel
o OFActionSetMPLSTC
o OFActionSetMPLSTTL
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o OFActionDecrementMPLSTTL
o OFActionSetIPSource
o OFActionSetIPDestination
o OFActionSetIPTOS
o OFActionSetIPECN
o OFActionSetIPTTL
o OFActionDecrementIPTTL
o OFActionSetTCPSource
o OFActionSetTCPDestination
o OFActionCopyTTLOut
o OFActionCopyTTLIn
Experimenter Actions
o OFActionExperimenter
Most Action LFBs have data associated with the action, e.g. an IP
Address for the SetIPSource or SetIPDestination actions, stored in an
array in the LFB. The FlowTable sending the packet needs to send
additionally as a metadata an index pointing to the action parameter
needed for the execution. Each Action LFB has one group input port
that accepts a packet, the LFBClassID of the LFB that sent the
packet, so that it can be returned after the action has been
performed, and optionally the Action Index. Furthermore, one more
metadata is required, the PacketID with which the Flow Table LFB or
the Group Table LFB can keep track of a packet's progress.
Additionally each Action LFB has one group output port that returns
the altered packet to the sender. Since the action LFBs have these
ports in common and the ForCES model can support augmentation of LFB
classes, similar to inheritance in object oriented programming, an
OFActionLFB has been specified from which all Action LFBs are derived
from.
The Action LFBs can be used also by the OFGroupTable and the
OFActionSet using the same input and output port.
Additionally each OFFlowTables can output a packet to a specific port
through the OFOutputAction LFB. Figure 5 shows an example of a
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topology and how the various LFBs are interconnected. The controller
can obtain the topology information by querying the FEObject's
LFBTopology.
/\ /\ /\ /\ /\
| Out | Out | Out | Out | Out
| | | | |
+-------+ +-------+ +-------+ +-------+ +-------+
| | | | | | | | | |
|OFQueue| |OFQueue| |OFQueue| ... |OFQueue| |OFQueue|
| | | | | | | | | |
+-------+ +-------+ +-------+ +-------+ +-------+
/\ /\ /\ /\ /\
| | | | |
| +--+---------+ | |
| | | |
+--------+ +--------+ +--------+ +--------+
In | | | |<-- In -->| | | | In
-->| OFPort | | OFPort | | OFPort | | OFPort |<--
| | | | ... | | | |
+--------+ +--------+ +--------+ +--------+
| /\ | /\ | /\ | /\
| | | | | | | |
+--+---|----------+---|-----------------+---|------------+ |
| | | | | |
| +---------+----+---------------------+---------------+
| |
| +----------+ +------------+
| | |------------------> | |To
| +---->| OFOutput | | OFRedirect |-->
| | | Action | +----------+ | Out |Controller
| | | |--->| |--->| |
| | +----------+ | OFBuffer | +------------+
| | /\ /\ +--| |<-+
| | | | | +----------+ | +------------+
| | +----------------+ +-| |From
| | | | | | OFRedirect |<--
| | | +--------------------------------| In |Controller
| | | | | | +------------+
| | | | | | +---------+
\/ | \/ \/ | +-----------| |
+--------+ | | OFGroup |
| |------------------->| Table |
| OFFlow | | | |
| Tables | +-------------+ +---------+
| |-->| | /\ /\
+--------+ | OFActionSet | | |
/\ | |---+ |
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| +-------------+ |
| | |
| +------+-------+-------|------+--------------+
| | | | | |
| +--------------+----------+---+--------------+ |
| | | | | | | | |
+--|----------+---|-----------+--|-----------+ | |
| | | | | | | | | | | |
\/ \/ \/ \/ \/ \/ \/ \/ \/ \/ \/ \/
+--------+ +--------+ +--------+ +--------+
| | | | | | | |
|OFAction| |OFAction| |OFAction| |OFAction|
| | | | | | | |
+--------+ +--------+ +--------+ +--------+
Figure 5: ForCES OpenFlow Switch example LFB connectivity
When a packet has finished processing of the Flow Table pipelines, it
will be sent along with the ActionSet Metadata to the OFActionSet LFB
for processing of the ActionSet. The ActionSet LFB is responsible
for performing all actions specified in the ActionSet Metadata in the
order specified by the ActionSet requirements in Section 3.1.
Buffering packets for OpenFlow PacketIn messages is handled by the
OFBuffer LFB. The execution of OpenFlow's PacketOut message which
contains a list of actions to be performed on a buffered or a
redirected packet in the switch is to be performed internally in the
OFFlowTables after receiving the list and the packet from the
OFBuffer LFB.
OpenFlow 1.1 provides, with the use of the experimenter concept new
instruction or action types. In this model, new instruction types
can be modeled by expanding the InstructionTypes datatype definition
and new action types can be modeled by creating new ActionLFBs.
4. OpenFlow Base Types
Some datatypes in this LFB library are imported from Base LFB Library
[I-D.ietf-forces-lfb-lib] as they have already been defined there.
4.1. Data Types
Data types defined in the OpenFlow library are categorized by types
of atomic, compound struct, and compound array.
4.1.1. Atomic
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The following data types are defined as atomic data types in the
OpenFlow library:
+-----------------------------+---------------------------+---------+
| Data Type Name | Brief Description | Base |
| | | Type |
+-----------------------------+---------------------------+---------+
| MPLSLabelValue | An MPLS label | uint32 |
| | | |
| MPLSTrafficClassValues | The MPLS Traffic Class | uchar |
| | | |
| IPv4ToSbits | TOSBits | uchar |
| | | |
| ActionType | The possible actions | uint16 |
| | | |
| InstructionTypes | Instructions supported | uchar |
| | | |
| FlowTableMissConfigType | Types to configure the | uint32 |
| | default behavior of | |
| | unmatched packets in a | |
| | Flow Table | |
| | | |
| PacketInTypes | Packet In Types | uchar |
| | | |
| GroupBucketExecuteType | To determine which Action | uchar |
| | Bucket(s) should be | |
| | executed (all, select, | |
| | indirect, fast failover) | |
| | | |
| PortNumberType | Port Number values | uint32 |
| | | |
| QueuePropertyType | Property type for a queue | uint16 |
+-----------------------------+---------------------------+---------+
OpenFlow Atomic Types
4.1.2. Compound Struct
The following data types are defined as struct data types in the
OpenFlow library:
+------------------------------+------------------------------------+
| Data Type Name | Brief Description |
+------------------------------+------------------------------------+
| SwitchDescriptionType | Fields of the switch description |
| | |
| WildcardsType | Wildcards for fields |
| | |
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| MatchFieldType | A Match Field Type (contains all |
| | possible match fields) |
| | |
| FlowEntry | A Flow entry type |
| | |
| ActionRowType | An Action Row for the action table |
| | |
| TableCounterType | Counter per table |
| | |
| FlowCounterType | Counter per flow |
| | |
| WriteMetadataTableType | Metadata and mask for the write |
| | metadata instruction per row |
| | |
| GroupCounterType | Counters per group |
| | |
| BucketCounterType | Counters per bucket |
| | |
| GroupTableEntry | A Row of the Group Table |
| | |
| ActionBucket | An Action Bucket |
| | |
| PortConfigurationType | Types of configuration for the |
| | OpenFlow port |
| | |
| PortStateType | Current State of the port |
| | |
| PortFeaturesType | Port Features |
| | |
| PortCounterType | Counter per port |
| | |
| QueueArrayPropertiesType | Type Definition for property |
| | |
| QueueCounterType | Counters per queue |
| | |
| ActionRowType | Row type for the ActionSet and |
| | Action List. Contains type of |
| | action, LFB Class and Instance ID |
| | and ActionTableIndex. |
+------------------------------+------------------------------------+
OpenFlow Struct Types
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4.1.3. Compound Array
The following data types are defined as an array data type in the
OpenFlow library
+----------------+------------------------------------------------+
| Data Type Name | Brief Description |
+----------------+------------------------------------------------+
| Actions | Actions to perform. An Array of ActionRowTypes |
+----------------+------------------------------------------------+
OpenFlow Array Types
4.2. Frame Types
No additional frame types are defined in this library
4.3. MetaData Types
The following metadata are defined in the OpenFlow type library:
+-----------------------+----------------+----------+---------------+
| MetaData Name | Brief | MetaData | Metadata Type |
| | Description | ID | |
+-----------------------+----------------+----------+---------------+
| IngressPort | The Ingress | 1024 | uint32 |
| | port the | | |
| | packet has | | |
| | arrived from. | | |
| | | | |
| InPhyPort | The Port Index | 1025 | uint32 |
| | of the | | |
| | Physical | | |
| | interface the | | |
| | frame entered | | |
| | the switch | | |
| | | | |
| PacketID | The PacketID | 1026 | uint32 |
| | metadata is | | |
| | used to | | |
| | uniquelly | | |
| | identify a | | |
| | packet within | | |
| | the Flow Table | | |
| | or the Group | | |
| | Table to | | |
| | continue | | |
| | processing it | | |
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| | after it has | | |
| | been returned | | |
| | from an | | |
| | OFActionLFB. | | |
| | | | |
| ActionIndex | The Action | 1027 | uint32 |
| | Index metadata | | |
| | is used to | | |
| | point the row | | |
| | in the array | | |
| | in an Action | | |
| | LFB | | |
| | | | |
| GroupIndex | The Group | 1028 | uint32 |
| | index metadata | | |
| | is used to | | |
| | point to the | | |
| | row of the | | |
| | array in an | | |
| | Group LFB | | |
| | | | |
| LFBClassIDMetadata | The LFBClassID | 1029 | uint32 |
| | | | |
| LFBInstanceIDMetadata | The LFB | 1030 | uint32 |
| | Instance ID | | |
| | | | |
| QueueID | The Queue ID | 1031 | uint32 |
| | the packet | | |
| | should be sent | | |
| | to | | |
| | | | |
| BufferID | The Buffer ID | 1032 | uint32 |
| | of a stored | | |
| | packet in the | | |
| | switch | | |
| | requried for | | |
| | the PacketOut | | |
| | message | | |
| | | | |
| RedirectReason | The reason the | 1033 | uchar |
| | packet was | | |
| | redirected to | | |
| | the controller | | |
| | | | |
| FlowTableID | The FlowTable | 1034 | uchar |
| | ID the packet | | |
| | was sent to | | |
| | the controller | | |
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| | from | | |
| | | | |
| ActionList | The Action | 1035 | Array of |
| | List that may | | ActionRowType |
| | come along | | |
| | with the | | |
| | packet in a | | |
| | PacketOut | | |
| | message | | |
| | | | |
| ActionSet | The Action Set | 1036 | Array of |
| | to be executed | | ActionRowType |
| | at the end of | | |
| | the pipeline | | |
+-----------------------+----------------+----------+---------------+
OpenFlow Metadata Types
5. OpenFlow LFBs
5.1. OpenFlowSwitch
Similar to the concept of the FEProtocol LFB and the FEObject LFB,
the OpenFlowSwitchLFB contains information and configuration
parameters regarding the functionality of the switch but play no role
in the datapath processing. Therefore there are no input or output
ports.
5.1.1. Data Handling
This LFB does not handle any data.
5.1.2. Components
The DatapathID component, a unsigned integer of 64 bits, uniquely
identifies a datapath. The lower 48 bits are intended for the switch
MAC address, while the top 16 bits are up to the implementer.
The HandleFragments component, a Boolean, defines what the switch
does with fragments. If true the switch will drop fragments. If
false there is no special handling.
The ReassembleFragments component, a Boolean, defines if the switch
will reassemble fragments.
The InvalidTTLtoController component, a Boolean, defines whether the
switch will send packets with invalid TTL to the controller.
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The SwitchDescription component, a structure, contains the following
information about the switch:
o Manufacturer description
o Hardware description
o Software description
o Serial Number
o Human readable description of datapath
Lastly the Ports component is an array which contains in its rows,
all the port numbers.
5.1.3. Capabilities
The following capabilities have been defined for the OpenFlowSwitch
LFB
An assortment of Boolean type capabilities to define:
o FlowStatistics. If the switch keeps flow statistics
o TableStatistics. If the switch keep table statistics
o PortStatistics. If the switch keep port statistics
o GroupStatistics. If the switch keep group statistics
o IPReassembly. If the switch can reassemble IP fragments
o QueueStats. If the switch keeps queue statistics
o ARPMatchIP. If the switch matches IP addresses in ARP packets
The TablesSupported capability, an unsigned integer of 8 bits,
defines the number of tables supported by the switch, each of which
can have a different set of supported wildcard bits and number of
entries.
Additionally the another capability, the ActionSupported, defines the
supported actions for the switch.
5.1.4. Events
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Three events have been specified regarding the ports. The first
event will be triggered when a new port is added to the switch, the
second when a port has been removed from the switch and the third
when a port has been modified
5.2. OFFlowTables
An LFB that houses all OpenFlow Flow Tables residing in the switch.
5.2.1. Data Handling
The OFFlowTables describes the process of selecting packets and
classify them into specific flows based on specific match fields
assigned by the controller.
The LFB is expected to receive all types of Ethernet packets through
a group input named InputPort from an OFPort along with the
IngressPort and the InPhyPort as metadata.
All Flow Tables reside in an array within the LFB, the index of the
array being the Flow Table ID.
Each Flow Table compares the packet with the MatchFields inside the
FlowEntries Table. If there is no match, depending upon the
MissBehaviour component, one of the following actions will occur:
1. The packet or part of it will be sent to the controller via the
singleton output port RedirectPacketOut along with the
IngressPort, InPhyPort, RedirectReason and FlowTableID as
metadata and optionally the BufferID if the packet is buffered in
the switch. How the packet is buffered in the switch is
implementation specific.
2. The packet will be sent it to the next table in the pipeline (the
next flow table row entry in the array).
3. The packet will be dropped.
If there is a match the LFB will decide based on the InstructionType
of the component Instructions inside the matched FlowEntry.
If the instruction is Apply Actions, the LFB will use the
InstructionIndex to find the Actions inside the ApplyActionList.
Each row of the ApplyActionList is an array containing rows of
ActionRowTypes. For every ActionRowType, the LFB will send the
packet to the corresponding Action LFB through the group output
ActionPort port alongside with the LFBClassIDMetadata of the LFB, the
PacketID and the ActionIndex, if the specific action has any
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parameters, like the Set MAC Address action. The ActionIndex is used
as an index for the table inside the Action LFB. The packet is then
returned from the Action LFB through the group input port
PacketReturn to continue further processing if exists. The PacketID
is an identifier issued by the OFFlowTables LFB that will uniquely
identify the packet so that when it returns it will continue
processing from whence it stopped.
One exception to the rule when applying the action list is in regards
to the Group action. The OFGroup LFB handles groups. The
OFFlowTables using the ActionIndex locates the Group Identifier in
the OFFlowTables's GroupTable component. Then it sends a copy of the
packet to the GroupTableLFB using the group output ActionPort and the
original packet will continue in the Flow Table.
The ActionSet metadata is being populated as a packet traverses this
LFB by both instructions Clear Actions and Write Actions. Write
Metadata instruction is implementation specific as it is interally to
the LFB.
If the instruction is Goto Table, the LFB will use the
InstructionIndex to find the value OFFlowTables InstanceID in the
GoToFlowTable table and send the packet to the FLowTables row entry
with the index of the FlowTable ID.
At the end of the flow table pipeline, the packet along with the
ActionSet metadata will be sent to the OFActionSet via the singleton
output port ActionSetPort
Additionally the OFFlowTables handle packets incoming from the
controller expecting a whole packet either through the
RedirectPacketIn group input port from the OFRedirectIn LFB or the
OFBuffer LFB along with the ActionList and the IngressPort as
metadata. The OFFlowTables MUST perform the ActionList on the packet
prior to be sent in the flow tables.
5.2.2. Components
The FlowTables, an array holding all Flow Tables of the switch. Each
row of the array is a struct of the FlowEntries, the FlowTableCounter
and the MissBehaviour for each flow. The FlowEntries component of
the struct is an array and each row of the array is a struct
containing the cookie, the MatchFields, the Counters, the
Instructions, the Timeouts, the Timers and the priority of the
specific flow entry. The FlowTableCounter are the counters of the
specific FlowTable and the MissBehaviour component of the struct
specifies what the specific Flow Table shall do with the packet if
there is no match.
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The ApplyActionList is a component to maintain the actions required
per flow. It is an array of Actions, which is an array of a struct
of ActionType and ActionTableIndex.
The WriteActions is a component to maintain the actions to be writen
for a write actions instruction. It is an array of Actions, which is
an array of a struct of ActionType and ActionTableIndex.
The WriteMetadataTable is a component to hold the metadata values
required for the write metadata value. It is an array of
WriteMetadataTableType, which is a struct of the Metadata value and
the MetadataMask.
The GotoFlowTable component contains the FlowTable IDs flows should
go to for the goto table action. It is an array of uint32. The
value is selected using the InstructionIndex.
The GroupTable component contains group identifiers. It is an array
of group identifiers indexed by the ActionTableIndex.
5.2.3. Capabilities
This LFB has no capabilities specified.
5.2.4. Events
One event has been defined regarding the Flow Table. The event will
be triggered when a flow is deleted from the Flow Table whether due
to the idle timeout, or to the hard timeout or a flow was deleted by
the controller.
5.3. OFGroupTable
The Group LFB contains Action Buckets that can be applied to a packet
during its path in the Flow Tables pipeline.
5.3.1. Data Handling
The OFGroupTable does not take part in the actual handling of the
data. Rather, it contains the action per group which are required by
all Flow Tables in the pipeline. Packets initially enter this LFB
from an OFActionSet LFB or a OFFlowTables via the group input port
PacketIn and using the GroupIndex metadata the LFB finds the group
requested for this packet. Then the LFB depending on the requested
actions sends the packet to the required OFActionLFBs via the group
output ActionPort and expects results via the group input
PacketReturn.
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5.3.2. Components
The LFB has only one component which is the Group Table. This is an
array of GroupTableEntry types. Each GroupTableEntry contains a
Group Identifier, the type of Group, the required counters and an
array of action buckets.
An action bucket is a struct which contains the Group weight required
for select groups, the watch port and watch group required for fast
failover groups, the bucket counters and the actions for this bucket.
The structure of actions in a bucket are identical to the actions in
the flow table LFB containing the type of action and an action table
index. With the action type and action index the Group LFB can
identify the component and index of the action details.
5.3.3. Capabilities
This LFB has no capabilities specified.
5.3.4. Events
This LFB has no events specified.
5.4. OFPort
5.4.1. Data Handling
This LFB abstract the point where packets enter and exit the OpenFlow
switch pipeline. May be a physical port, a virtual port defined by
the switch. The LFB handles Ethernet frames coming in or going out
to/of the OpenFlow switch. Ethernet frames are received and passed
to an OFFlowTables through the singleton output port PacketIn, along
with the IngressPortID and InPhyPort metadata.
When a packet is ready to be send on the wire, it is sent to an
OFPort instance through the group input port PacketOut and then
depending of whether the packet has been assigned a queue with the
QueueID as metadata and then is sent to the OFQueue LFB via the group
output port QueueOut.
5.4.2. Components
The PortNumber component uniquely identifies the port within a
switch.
The IEEEMAC component contains the MAC Address of the port.
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The Name component is a human readable name of the port.
The Configuration component specifies port behaviour. It's a struct
component with the following boolean fields. PortDown, NoReceiving,
NoForwarding and NoPacket_In.
The State component defines the current state of the OpenFlow Switch.
It is a struct component that defines whether the link is down, the
port is blocked or the port can be used for live fast failover.
The Current Features component describes the current features of the
port. It is a struct component and specifies the Speed Types, the
Connected Medium, the Auto Negotiation and the Pause Types
The Advertised Features component describes the advertised features
of the port. The component is of the same structure as the current
features.
The CurrentSpeed component defines the current port bitrate in kbps.
The MaximumSpeed component defines the maximum port bitrate in kbps.
The PortCounter component contains the necessary counters for the
port. It is a struct component comprised of counters for Packets
Received, Packets Transmitted, Bytes Received, Bytes Transmitted,
Drops Received, Transmit Drops, Errors in reception, Errors in
transmittion, Frame Alignment Errors received, Received Overrun
Errors, CRC Errors in received packets, Collisions.
5.4.3. Capabilities
Two capabilities has been defined for the Port LFB. Supported
Features and Peer Features. These include:
o Types of Speed supported
o Medium Connected to the port
o Auto-negotiation
o Pause Types supported of the port
5.4.4. Events
This LFB has no events specified.
5.5. OFQueue
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5.5.1. Data Handling
This LFB manages the queuing algorithm for handling packets prior to
be output from the switch. Multiple OFQueue LFBs can be attached to
an OFPort LFB to handle queues. If a packet has been set a QueueID
with a Set Queue action, it is sent to the OFQueue LFB after the
OFPort LFB and it enters this LFB via the group input port PacketIn
where it will be handled according to the LFBs configuration and then
be output from the switch.
5.5.2. Components
The QueueID component, a uint32, defines the ID for the specific
queue.
The Properties component, is an array of Property Types an the length
of the property, defines the current queue mode. Current specified
modes are none and minimum rate.
The QueueCounter component, a struct of TransmitPackets,
TransmitBytes, TransimtOverrunErrors holds the necessary counter for
the LFB.
5.5.3. Capabilities
This LFB has no capabilities specified.
5.5.4. Events
This LFB has no events specified.
5.6. OFRedirectIn
The OFRedirectIn LFB abstracts the process for the controller to
inject data packets into the switch to input data packets into the
data path. The LFB is derived from the RedirectIn LFB defined in the
Base LFB Library [I-D.ietf-forces-lfb-lib].
5.6.1. Data Handling
A packet or a bufferID arrives from the controller depending on
whether the packet was buffered or not in the switch. If the packet
was not buffered or the controller wishes to inject a packet into the
switch, the packet will be output from the singleton output port
PacketIn along with an ActionList and an IngressPort metadata to be
sent to the OFFlowTables for processing. If the packet was buffered
in the switch, the no packet is sent from the singleton output port
BufferIn but only the BufferID, the ActionList and the IngressPort
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metadatas which is sent out the BufferIn singleton port to the
OFBuffer LFB.
5.6.2. Components
This LFB has no components specified.
5.6.3. Capabilities
This LFB has no capabilities specified.
5.6.4. Events
This LFB has no events specified.
5.7. OFRedirectOut
The OFRedirectOut LFB abstracts the process for the switch to deliver
data packets to the controller. The LFB is derived from the
RedirectIn LFB defined in the Base LFB Library
[I-D.ietf-forces-lfb-lib].
5.7.1. Data Handling
A packet arrives from the group input port Outgoing from the
OFActionOutput LFBs or part of a packet along with the BufferID
metadata arrives from the OFBufferLFB via the Outgoing group port.
Besides the optional BufferID metadata, the IngressPort, the
InPhyPort and the RedirectReason and the optional FlowTableID are
sent to the Outgoing input port required to be sent to the Controller
as metadata.
5.7.2. Components
This LFB has no components specified.
5.7.3. Capabilities
This LFB has no capabilities specified.
5.7.4. Events
This LFB has no events specified.
5.8. OFActionSet
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The OFActionSet LFB abstracts the process for the switch to process
the Action Set metadata and perform the Actions therein on the
received packet.
5.8.1. Data Handling
A packet arrives from the singleton input port PacketIn from the
OFFlowTables LFB along with the ActionSet metadata. The ActionSet
LFB then performs the ActionSet on the packet by sending it to the
necessary Action LFBs via the group output port ActionPort and
receiving it back via the PacketReturn group input port, or even
sending it to the OFGroupTable via the GroupPort singleton output
port. If the packet must be sent on an output port, the packet is
sent via the OutputPort singelton output port.
As all necessary parameters are inside the ActionSEt metadata, this
LFB has no configurable or queriable parameters.
5.8.2. Components
This LFB has no components specified.
5.8.3. Capabilities
This LFB has no capabilities specified.
5.8.4. Events
This LFB has no events specified.
5.9. OFBuffer
The OFBuffer LFB abstracts the process for the switch to buffer
packets and send only part of it to the RedirectOut to be sent to the
controller, or receive a BufferID and send buffered packets to the
OFFlowTables.
5.9.1. Data Handling
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A packet arrives from the singleton input port FlowTableIn from the
OFFlowTables LFB to be Buffered. If there is enough room, based on
the in the switch the packet is buffered and the MissSendLen
specifies the amount of the packet is sent to the OFRedirectOut LFB
to be sent to the controller via the ToRedirectOut singleton output
port along with the Buffer ID metadata. Upon receiving the BufferID
from the ControllerIn singleton input port from the OFRedirectIn LFB
optionally along with the ActionList metadata, the OFBuffer LFB
retrieves the buffered packet and sends it along with the ActionList
to the OFFlowTables LFB.
5.9.2. Components
This LFB has one component specified.
The MissSendLen component, an unsigned integer of 16 bits, defines
the maximum number of bytes of each packet sent to the controller as
a result of both flow table misses and flow table hits with the
controller as the destination.
5.9.3. Capabilities
This LFB has one capability specified.
The MaxBufferedPackets, an unsigned integer of 32 bits, defines the
maximum packets the switch can buffer when sending packets to the
controller.
5.9.4. Events
This LFB has no events specified.
5.10. OFAction
This LFB is a template used for create OFActionLFBs. All
OFActionLFBs have the input and output port in common but have
different components. This LFB defines how input and output port of
all OFActionLFBs. Inside OFActionLFBs there is a table with the
required attributes where applicable as some OFActionLFBs don't
require attributes.
5.10.1. Data Handling
A packet arrives in an OFActionLFB via the group input PacketIn from
an OFFlowTables or an OFGroupTable, along with the LFBClassID
metadata, required to uniquely identify the sender, the PacketID and
optionally the ActionIndex metadata if the action requires a specific
attributes, the IngressPort, the InPhyPort and the QueueID required
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by the OFActionOutput. Once the packet has been processed it is
return to the sender LFB via the group output PacketOut along with
the PacketID.
5.10.2. Components
This LFB has no components specified.
5.10.3. Capabilities
This LFB has no capabilities specified.
5.10.4. Events
This LFB has no events specified.
5.11. OFActionLFBs
As none of the OFActionLFBs have any capabilities or events, these
sections are ommited from the draft.
5.11.1. OFActionOutput
5.11.1.1. Data Handling
The OFActionOutputLFB does not modify the packet in any way, rather
forwards a packet to a specified OFPort. Additionally there are
several virtual ports that the OFActionOutputLFB may send the packet
to:
All - Group output, sends the packet out all standard ports, but
not to the ingress port or ports configured not to forward
Controller - Sends the packet to the controller
Table - Submit the packet to the first flow table so that the
packet can be processed through the regular OpenFlow pipeline.
Only valid in the action list of a packet-out message
InPort - Sends the packet out the ingress port.
Local - Sends the packet to the switch's local networking stack
Normal - Processes the packet using the traditional non-OpenFlow
pipeline of the switch.
Flood - Floods the packet using the normal pipeline of the switch.
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5.11.1.2. Components
This LFB has only one component, the OutputActionTable, which is an
array of a struct of the port number and optionally the maximum
length in bytes, if the receiving end is the controller.
5.11.2. OFActionSetVLANVID
5.11.2.1. Data Handling
The OFActionSetVLANVIDLFB replaces the existing VLAN ID. Only
applies to packets with an existing VLAN tag.
5.11.2.2. Components
This LFB has only one component, the SetVLANVIDActionTable, which is
an array of uint16 VLAN tag values.
5.11.3. OFActionSetVLANPriority
5.11.3.1. Data Handling
The OFActionSetVLANPriorityLFB replaces the existing VLAN priority.
Only applies to packets with an existing VLAN tag.
5.11.3.2. Components
This LFB has only one component, the SetVLANPriorityActionTable,
which is an array of uchar VLAN priority values.
5.11.4. OFActionSetMACSource
5.11.4.1. Data Handling
The OFActionSetMACSourceLFB replaces the existing Ethernet source MAC
address.
5.11.4.2. Components
This LFB has only one component, the SetMACSourceActionTable, which
is an array of IEEEMAC addresses.
5.11.5. OFActionSetMACDestination
5.11.5.1. Data Handling
The OFActionSetMACDestinationLFB replaces the existing Ethernet
source MAC address.
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5.11.5.2. Components
This LFB has only one component, the SetMACSourceActionTable, which
is an array of IEEEMAC addresses.
5.11.6. OFActionSetIPSource
5.11.6.1. Data Handling
The OFActionSetIPSourceLFB replaces the existing IP source address
with new value and update the IP checksum (and TCP/UDP/SCTP checksum
if applicable). This action is only applicable to IPv4 packets.
5.11.6.2. Components
This LFB has only one component, the SetIPSourceActionTable, which is
an array of IPv4 addresses.
5.11.7. OFActionSetIPDestination
5.11.7.1. Data Handling
The OFActionSetIPDestinationLFB replaces the existing IP destination
address with new value and update the IP checksum (and TCP/UDP/SCTP
checksum if applicable). This action is only applicable to IPv4
packets.
5.11.7.2. Components
This LFB has only one component, the SetIPDestinationActionTable,
which is an array of IPv4 addresses.
5.11.8. OFActionSetIPTOS
5.11.8.1. Data Handling
The OFActionSetIPTOSLFB replaces the existing IP TOS value and update
the IP checksum. Only applies to IPv4 packets.
5.11.8.2. Components
This LFB has only one component, the SetIPTOSActionTable, which is an
array of IPv4 uchar TOS values.
5.11.9. OFActionSetIPECN
5.11.9.1. Data Handling
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The OFActionSetIPECNLFB replaces the existing IP ECN value and update
the IP checksum. Only applies to IPv4 packets.
5.11.9.2. Components
This LFB has only one component, the SetIPECNActionTable, which is an
array of IPv4 uchar ECN values.
5.11.10. OFActionSetTCPSource
5.11.10.1. Data Handling
The OFActionSetTCPSourceLFB replaces the existing TCP/UDP/SCTP source
port with new value and update the TCP/UDP/SCTP checksum. This
action is only applicable to TCP, UDP and SCTP packets.
5.11.10.2. Components
This LFB has only one component, the SetTCPSourceActionTable, which
is an array of uint16 values.
5.11.11. OFActionSetTCPDestination
5.11.11.1. Data Handling
The OFActionSetTCPDestinationLFB replaces the existing TCP/UDP/SCTP
destination port with new value and update the TCP/UDP/SCTP checksum.
This action is only applicable to TCP, UDP and SCTP packets.
5.11.11.2. Components
This LFB has only one component, the SetTCPDestinationActionTable,
which is an array of uint16 values.
5.11.12. OFActionCopyTTLOut
5.11.12.1. Data Handling
The OFActionCopyTTLOutLFB copies the TTL from next-to-outermost to
outermost header with TTL. Copy can be IP-to-IP, MPLS-to-MPLS, or
IP-to-MPLS.
5.11.12.2. Components
This LFB has no components specified.
5.11.13. OFActionCopyTTLIn
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5.11.13.1. Data Handling
The OFActionCopyTTLOutLFB copies the TTL from outermost to next-to-
outermost header with TTL. Copy can be IP-to-IP, MPLS-to-MPLS, or
IP-to-MPLS.
5.11.13.2. Components
This LFB has no components specified.
5.11.14. OFActionSetMPLSLabel
5.11.14.1. Data Handling
The OFActionSetMPLSLabelLFB replaces the existing MPLS label. Only
applies to packets with an existing MPLS shim header.
5.11.14.2. Components
This LFB has only one component, the SetMPLSLabelActionTable, which
is an array of uint32 MPLS label values.
5.11.15. OFActionSetMPLSTC
5.11.15.1. Data Handling
The OFActionSetMPLSTCLFB replaces the existing MPLS traffic class.
Only applies to packets with an existing MPLS shim header.
5.11.15.2. Components
This LFB has only one component, the SetMPLSTCActionTable, which is
an array of uchar MPLS label values.
5.11.16. OFActionSetMPLSTTL
5.11.16.1. Data Handling
The OFActionSetMPLSTTLLFB replaces the existing MPLS TTL. Only
applies to packets with an existing MPLS shim header.
5.11.16.2. Components
This LFB has only one component, the SetMPLSTTLTable, which is an
array of uchar MPLS TTL values.
5.11.17. OFActionDecrementMPLSTTL
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5.11.17.1. Data Handling
The OFActionDecrementMPLSTTLLFB decrements the MPLS TTL. Only
applies to packets with an existing MPLS shim header.
5.11.17.2. Components
This LFB has no components specified.
5.11.18. OFActionPushVLan
5.11.18.1. Data Handling
The OFActionPushVLanLFB pushes a new VLAN header onto the packet.
The Ethertype is used as the Ethertype for the tag. Only Ethertype
0x8100 and 0x88a8 should be used.
5.11.18.2. Components
This LFB has only one component, the PushVLANTable, which is an array
of uint16 ethertypes.
5.11.19. OFActionPopVLAN
5.11.19.1. Data Handling
The OFActionPopVLANLFB pops the outer-most VLAN header from the
packet.
5.11.19.2. Components
This LFB has no components specified.
5.11.20. OFPushMPLSOFAction
5.11.20.1. Data Handling
The OFPushMPLSOFActionLFB pushes a new MPLS shim header onto the
packet. The Ethertype is used as the Ethertype for the tag. Only
Ethertype 0x8847 and 0x8848 should be used.
5.11.20.2. Components
This LFB has only one component, the PushMPLSTable, which is an array
of uint16 MPLS header values.
5.11.21. OFPopMPLSOFAction
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5.11.21.1. Data Handling
The OFPopMPLSOFActionLFB pops the outer-most MPLS tag or shim header
from the packet. The Ethertype is used as the Ethertype for the
resulting packet (Ethertype for the MPLS payload).
5.11.21.2. Components
This LFB has only one component, the PopMPLSTable, which is an array
of uint16 ethertype values.
5.11.22. OFSetQueueOFAction
5.11.22.1. Data Handling
The OFSetQueueOFActionLFB sets the queue ID for the packet. This LFB
will return the packet along with the QueueID as a metadata.
5.11.22.2. Components
This LFB has only one component, the SetQueueTable, which is an array
of uint32 queue identifiers.
5.11.23. OFSetIPTTLOFAction
5.11.23.1. Data Handling
The OFSetIPTTLOFActionLFB replaces the existing IP TTL and update the
IP checksum. Only applies to IPv4 packets.
5.11.23.2. Components
This LFB has only one component, the SetIPTTLTable, which is an array
of uchar TTL values.
5.11.24. OFDecrementIPTTLOFAction
5.11.24.1. Data Handling
The OFDecrementIPTTLOFActionLFB decrements the existing IP TTL and
update the IP checksum. Only applies to IPv4 packets.
5.11.24.2. Components
This LFB has no components specified.
5.11.25. OFExperimenterOFAction
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5.11.25.1. Data Handling
The OFExperimenterOFActionLFB handles experimenter actions.
5.11.25.2. Components
This LFB has only one component, the SetIPTTLTable, which is an array
of uint32 Experimenter ID values.
6. XML for OpenFlow library
<?xml version="1.0" encoding="UTF-8"?>
<LFBLibrary xmlns="urn:ietf:params:xml:ns:forces:lfbmodel:1.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="urn:ietf:params:xml:ns:forces:lfbmodel:1.0
provides="
OpenFlow ">
<load library="BaseTypeLibrary"/>
<load library="BaseLFBLibrary"/>
<frameDefs>
<frameDef>
<name>Arbitrary</name>
<synopsis>Any kind of Frame</synopsis>
</frameDef>
</frameDefs>
<dataTypeDefs>
<dataTypeDef>
<name>IEEEMAC</name>
<synopsis>An IEEE MAC Address</synopsis>
<typeRef>byte[6]</typeRef>
</dataTypeDef>
<dataTypeDef>
<name>SwitchDescriptionType</name>
<synopsis>The type of the switch description</synopsis>
<struct>
<component componentID="1">
<name>MFR</name>
<synopsis>Manufacturer description</synopsis>
<typeRef>string[256]</typeRef>
</component>
<component componentID="2">
<name>HW</name>
<synopsis>Hardware description</synopsis>
<typeRef>string[256]</typeRef>
</component>
<component componentID="3">
<name>SF</name>
<synopsis>Software description</synopsis>
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<typeRef>string[256]</typeRef>
</component>
<component componentID="4">
<name>SerialNum</name>
<synopsis>Serial Number</synopsis>
<typeRef>string[32]</typeRef>
</component>
<component componentID="5">
<name>DP</name>
<synopsis>Human Readable description of datapath
</synopsis>
<typeRef>string[256]</typeRef>
</component>
</struct>
</dataTypeDef>
<dataTypeDef>
<name>MPLSLabelValue</name>
<synopsis>An MPLS label.</synopsis>
<atomic>
<baseType>uint32</baseType>
<rangeRestriction>
<allowedRange min="0" max="1048575"/>
</rangeRestriction>
</atomic>
</dataTypeDef>
<dataTypeDef>
<name>MPLSTrafficClassValues</name>
<synopsis>The MPLS Traffic Class</synopsis>
<atomic>
<baseType>uchar</baseType>
<rangeRestriction>
<allowedRange min="0" max="7"/>
</rangeRestriction>
</atomic>
</dataTypeDef>
<dataTypeDef>
<name>IPv4ToSbits</name>
<synopsis>TOSBits</synopsis>
<atomic>
<baseType>uchar</baseType>
<rangeRestriction>
<allowedRange min="0" max="63"/>
</rangeRestriction>
</atomic>
</dataTypeDef>
<dataTypeDef>
<name>WildcardsType</name>
<synopsis>Wildcards for fields</synopsis>
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<struct>
<component componentID="1">
<name>InPort</name>
<synopsis>Input Port Wildcard</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="2">
<name>VLANID</name>
<synopsis>VLan ID Wildcard</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="3">
<name>VLANPCP</name>
<synopsis>Vlan priority Wildcard</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="4">
<name>DLType</name>
<synopsis>Ethernet frame typ Wildcard</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="5">
<name>IPToS</name>
<synopsis>IP ToS Wildcard</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="6">
<name>IPProtocol</name>
<synopsis>IP Protocol Wildcard</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="7">
<name>TPSource</name>
<synopsis>TCP/UDP/SCTP source port Wildcard</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="8">
<name>TPDestination</name>
<synopsis>TCP/UDP/SCTP destination port Wildcard
</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="9">
<name>MPLSLabel</name>
<synopsis>MPLS label Wildcard</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="10">
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<name>MPLSTC</name>
<synopsis>MPLS TC Wildcard</synopsis>
<typeRef>boolean</typeRef>
</component>
</struct>
</dataTypeDef>
<dataTypeDef>
<name>MatchFieldType</name>
<synopsis>A Match Field Type</synopsis>
<struct>
<component componentID="1">
<name>IngressPort</name>
<synopsis>Numerical representation of incoming port,
starting at 1. This may be a physical or
switch-defined virtual port.</synopsis>
<typeRef>uint32</typeRef>
</component>
<component componentID="2">
<name>Wildcards</name>
<synopsis>Wildcards for match fields</synopsis>
<typeRef>WildcardsType</typeRef>
</component>
<component componentID="3">
<name>EthernetSourceAddress</name>
<synopsis>Ethernet source address</synopsis>
<typeRef>IEEEMAC</typeRef>
</component>
<component componentID="4">
<name>EthernetSourceAddressMask</name>
<synopsis>Ethernet source address mask</synopsis>
<typeRef>IEEEMAC</typeRef>
</component>
<component componentID="5">
<name>EthernetDestinationAddress</name>
<synopsis>Ethernet destination address</synopsis>
<typeRef>IEEEMAC</typeRef>
</component>
<component componentID="6">
<name>EthernetDestinationAddressMask</name>
<synopsis>Ethernet destination address mask</synopsis>
<typeRef>IEEEMAC</typeRef>
</component>
<component componentID="7">
<name>VlanID</name>
<synopsis>VLAN identifier of outermost VLAN tag.
</synopsis>
<typeRef>VlanIDType</typeRef>
</component>
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<component componentID="8">
<name>VlanPriority</name>
<synopsis>VLAN PCP Field of outermost VLAN tag.
</synopsis>
<typeRef>VlanPriorityType</typeRef>
</component>
<component componentID="9">
<name>EtherType</name>
<synopsis>Ethernet type of the OpenFlow packet payload
after VLAN tags. 802.3 frames have special handling
</synopsis>
<typeRef>uint16</typeRef>
</component>
<component componentID="10">
<name>IPv4TOS</name>
<synopsis>Specify as 8-bit value and place ToS in
upper 6 bits for match</synopsis>
<typeRef>IPv4ToSbits</typeRef>
</component>
<component componentID="11">
<name>IPProto</name>
<synopsis>IP protocol or lower 8 bits of ARP opcode.
Only the lower 8 bits of the ARP opcode are used
for the match</synopsis>
<typeRef>uchar</typeRef>
</component>
<component componentID="12">
<name>IPv4SourceAddress</name>
<synopsis>IPv4 Source Address to match</synopsis>
<typeRef>IPv4Addr</typeRef>
</component>
<component componentID="13">
<name>IPv4SourceAddressMask</name>
<synopsis>IPv4 Source Address mask</synopsis>
<typeRef>IPv4Addr</typeRef>
</component>
<component componentID="14">
<name>IPv4DestinationAddress</name>
<synopsis>IPv4 Destination Address to match</synopsis>
<typeRef>IPv4Addr</typeRef>
</component>
<component componentID="15">
<name>IPv4DestinationAddressMask</name>
<synopsis>IPv4 Destination Address mask</synopsis>
<typeRef>IPv4Addr</typeRef>
</component>
<component componentID="16">
<name>TCPSourcePort</name>
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<synopsis>Source Port for TCP and ICMP to match
</synopsis>
<typeRef>uint16</typeRef>
</component>
<component componentID="17">
<name>TCPDestinationPort</name>
<synopsis>Destination Port for TCP and ICMP to match
</synopsis>
<typeRef>uint16</typeRef>
</component>
<component componentID="18">
<name>MPLSlabel</name>
<synopsis>Match on outermost MPLS tag.</synopsis>
<typeRef>MPLSLabelValue</typeRef>
</component>
<component componentID="19">
<name>MPLSTrafficClass</name>
<synopsis>Match on outermost MPLS tag for traffic
class.</synopsis>
<typeRef>MPLSTrafficClassValues</typeRef>
</component>
<component componentID="20">
<name>Metadata</name>
<synopsis>MetaData</synopsis>
<typeRef>uint64</typeRef>
</component>
<component componentID="21">
<name>MetadataMask</name>
<synopsis>MetaData Mask</synopsis>
<typeRef>uint64</typeRef>
</component>
</struct>
</dataTypeDef>
<dataTypeDef>
<name>FlowEntry</name>
<synopsis>A Flow entry</synopsis>
<struct>
<component componentID="1">
<name>Cookie</name>
<synopsis>Opaque data chosen by controller</synopsis>
<typeRef>uint64</typeRef>
</component>
<component componentID="2">
<name>MatchFields</name>
<synopsis>Match Fields: to match against packets. These
consist of the ingress port and packet headers, and
optionally metadata specified by a previous table
</synopsis>
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<typeRef>MatchFieldType</typeRef>
</component>
<component componentID="3">
<name>Counters</name>
<synopsis>Counters: to update for matching packets
</synopsis>
<typeRef>FlowCounterType</typeRef>
</component>
<component componentID="4">
<name>Instructions</name>
<synopsis>Instruction: what to do with the packet of
the flow</synopsis>
<array>
<struct>
<component componentID="1">
<name>InstructionType</name>
<synopsis>The instruction type</synopsis>
<typeRef>InstructionTypes</typeRef>
</component>
<component componentID="2">
<name>InstructionIndex</name>
<synopsis>The instruction index.</synopsis>
<typeRef>uint32</typeRef>
</component>
</struct>
<contentKey contentKeyID="1">
<contentKeyField>InstructionType
</contentKeyField>
</contentKey>
</array>
</component>
<component componentID="5">
<name>Timeouts</name>
<synopsis>Timeouts for the flow entry</synopsis>
<struct>
<component componentID="1">
<name>IdleTimeout</name>
<synopsis>Timeout to expire if no flows are
matched for this flow entry</synopsis>
<typeRef>uint16</typeRef>
</component>
<component componentID="2">
<name>HardTimeout</name>
<synopsis>Timeout to expire for this flow entry
regardless of idle timeout</synopsis>
<typeRef>uint16</typeRef>
</component>
<component componentID="6">
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<name>Timers</name>
<synopsis>Timers per flow</synopsis>
<struct>
<component componentID="1">
<name>Duration_Sec</name>
<synopsis>Time flow has been alive in
seconds</synopsis>
<typeRef>uint32</typeRef>
</component>
<component componentID="2">
<name>Duration_nSec</name>
<synopsis>Time flow has been alive in
nanoseconds beyond Duration_Sec
</synopsis>
<typeRef>uint32</typeRef>
</component>
</struct>
</component>
<component componentID="7">
<name>Priority</name>
<synopsis>Priority within the specified flow
table</synopsis>
<typeRef>uint16</typeRef>
</component>
</struct>
</component>
</struct>
</dataTypeDef>
<dataTypeDef>
<name>ActionRowType</name>
<synopsis>An Action Row for the action table</synopsis>
<struct>
<component componentID="1">
<name>Action</name>
<synopsis>The type of action</synopsis>
<typeRef>ActionType</typeRef>
</component>
<component componentID="2">
<name>ActionTableIndex</name>
<synopsis>Index of the Table this action applies to
</synopsis>
<typeRef>uint32</typeRef>
</component>
</struct>
</dataTypeDef>
<dataTypeDef>
<name>ActionType</name>
<synopsis>The type of action</synopsis>
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<atomic>
<baseType>uint16</baseType>
<specialValues>
<specialValue value="1">
<name>OUTPUT</name>
<synopsis>Output to switch port</synopsis>
</specialValue>
<specialValue value="2">
<name>SetVLANVID</name>
<synopsis>Set the 802.1q VLAN id</synopsis>
</specialValue>
<specialValue value="3">
<name>SetVLANPCP</name>
<synopsis>Set the 802.1q priority</synopsis>
</specialValue>
<specialValue value="4">
<name>SetDLSrc</name>
<synopsis>Set Ethernet source address</synopsis>
</specialValue>
<specialValue value="5">
<name>SetDLDst</name>
<synopsis>Set Ethernet destination address
</synopsis>
</specialValue>
<specialValue value="6">
<name>SetIPSrc</name>
<synopsis>Set IP source address</synopsis>
</specialValue>
<specialValue value="7">
<name>SetIPDst</name>
<synopsis>Set IP Destination address</synopsis>
</specialValue>
<specialValue value="8">
<name>SetIPTOS</name>
<synopsis>Set ToS field</synopsis>
</specialValue>
<specialValue value="9">
<name>SetIPECN</name>
<synopsis>Set ECN field</synopsis>
</specialValue>
<specialValue value="10">
<name>SetTPSource</name>
<synopsis>TCP/UDP/SCTP source port</synopsis>
</specialValue>
<specialValue value="11">
<name>SetTPDestination</name>
<synopsis>TCP/UDP/SCTP destination port</synopsis>
</specialValue>
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<specialValue value="12">
<name>CopyTTLOut</name>
<synopsis>Copy TTL "outwards" -- from
next-to-outermost to outermost</synopsis>
</specialValue>
<specialValue value="13">
<name>CopyTTLIn</name>
<synopsis>Copy TTL "inwards" -- from outermost to
next-to-outermost</synopsis>
</specialValue>
<specialValue value="14">
<name>SetMPLSLabel</name>
<synopsis>Set MPLS label</synopsis>
</specialValue>
<specialValue value="15">
<name>SetMPLSTC</name>
<synopsis>Set MPLS TC</synopsis>
</specialValue>
<specialValue value="16">
<name>SetMPLSTTL</name>
<synopsis>Set MPLS TTL</synopsis>
</specialValue>
<specialValue value="17">
<name>PushVLANTag</name>
<synopsis>Push a new VLAN tag</synopsis>
</specialValue>
<specialValue value="18">
<name>PopVLANTag</name>
<synopsis>Pop the outer VLAN tag</synopsis>
</specialValue>
<specialValue value="19">
<name>PushMPLSTag</name>
<synopsis>Push a new MPLS tag</synopsis>
</specialValue>
<specialValue value="20">
<name>PopMPLSTag</name>
<synopsis>Pop the outer MPLS tag</synopsis>
</specialValue>
<specialValue value="21">
<name>SetQueue</name>
<synopsis>Set queue ID when outputting to a port
</synopsis>
</specialValue>
<specialValue value="22">
<name>Group</name>
<synopsis>Apply group</synopsis>
</specialValue>
<specialValue value="23">
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<name>SetIPTTL</name>
<synopsis>Set IP TTL</synopsis>
</specialValue>
<specialValue value="24">
<name>DecIPTTL</name>
<synopsis>Decrement IP TTL</synopsis>
</specialValue>
</specialValues>
</atomic>
</dataTypeDef>
<dataTypeDef>
<name>TableCounterType</name>
<synopsis>Counter per table</synopsis>
<struct>
<component componentID="1">
<name>ReferenceCount</name>
<synopsis>Active Entries</synopsis>
<typeRef>uint32</typeRef>
</component>
<component componentID="2">
<name>PacketLookups</name>
<synopsis>Packet Lookups</synopsis>
<typeRef>uint64</typeRef>
</component>
<component componentID="3">
<name>PacketMatches</name>
<synopsis>Packet Matches</synopsis>
<typeRef>uint64</typeRef>
</component>
</struct>
</dataTypeDef>
<dataTypeDef>
<name>Actions</name>
<synopsis>Actions to perform. An Array of ActionRowTypes
</synopsis>
<array>
<typeRef>ActionRowType</typeRef>
</array>
</dataTypeDef>
<dataTypeDef>
<name>FlowCounterType</name>
<synopsis>Counter per flow</synopsis>
<struct>
<component componentID="1">
<name>ReceivedPackets</name>
<synopsis>Packets Received</synopsis>
<typeRef>uint64</typeRef>
</component>
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<component componentID="2">
<name>ReceivedBytes</name>
<synopsis>Bytes Received</synopsis>
<typeRef>uint64</typeRef>
</component>
<component componentID="3">
<name>DurationS</name>
<synopsis>Duration in seconds</synopsis>
<typeRef>uint32</typeRef>
</component>
<component componentID="4">
<name>DurationNS</name>
<synopsis>Duration in nanoseconds</synopsis>
<typeRef>uint32</typeRef>
</component>
</struct>
</dataTypeDef>
<dataTypeDef>
<name>InstructionTypes</name>
<synopsis>Instructions supported</synopsis>
<atomic>
<baseType>uchar</baseType>
<specialValues>
<specialValue value="1">
<name>GotoTable</name>
<synopsis>Indicates the next table in the processing
pipeline. The table-id must be greater than the
current table-id. The flows of last table of the
pipeline can not include this instruction
</synopsis>
</specialValue>
<specialValue value="2">
<name>WriteMetadata</name>
<synopsis>Writes the masked metadata value into the
metadata field. The mask specifies which bits of
the metadata register should be modified (i.e.
new metadata = old metadata and ~mask | value and
mask)</synopsis>
</specialValue>
<specialValue value="3">
<name>WriteAction</name>
<synopsis>Merges the specifieed action(s) into the
current action set. If an action of the given
type exists in the current set, overwrite it,
otherwise add it.</synopsis>
</specialValue>
<specialValue value="4">
<name>ApplyActions</name>
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<synopsis>Applies the specific action(s)
immediately, without any change to the Action
Set. This instruction may be used to modify the
packet between two tables or to execute multiple
actions of the same type. The actions are
specified as an action list</synopsis>
</specialValue>
<specialValue value="5">
<name>ClearActions</name>
<synopsis>Clears all the actions in the action set
immediately.</synopsis>
</specialValue>
</specialValues>
</atomic>
</dataTypeDef>
<dataTypeDef>
<name>WriteMetadataTableType</name>
<synopsis>Metadata and mask for the write metadata
instruction per row</synopsis>
<struct>
<component componentID="1">
<name>Metadata</name>
<synopsis>The metadata</synopsis>
<typeRef>uint64</typeRef>
</component>
<component componentID="2">
<name>MetadataMask</name>
<synopsis>The metadata mask</synopsis>
<typeRef>uint64</typeRef>
</component>
</struct>
</dataTypeDef>
<dataTypeDef>
<name>FlowTableMissConfigType</name>
<synopsis>Types to configure the default behavior of
unmatched packets in a Flow Table</synopsis>
<atomic>
<baseType>uint32</baseType>
<specialValues>
<specialValue value="1">
<name>Controller</name>
<synopsis>Send to the controller</synopsis>
</specialValue>
<specialValue value="2">
<name>Continue</name>
<synopsis>Continue to the next table in the pipeline
or send to the controller if the FlowTable is the
last.</synopsis>
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</specialValue>
<specialValue value="3">
<name>Drop</name>
<synopsis>Drop the packet</synopsis>
</specialValue>
</specialValues>
</atomic>
</dataTypeDef>
<dataTypeDef>
<name>PacketInTypes</name>
<synopsis>Packet-in Types</synopsis>
<atomic>
<baseType>uchar</baseType>
<specialValues>
<specialValue value="1">
<name>NoMatch</name>
<synopsis>No Matching flow</synopsis>
</specialValue>
<specialValue value="2">
<name>Action</name>
<synopsis>Explicit action to send to controller
</synopsis>
</specialValue>
</specialValues>
</atomic>
</dataTypeDef>
<dataTypeDef>
<name>GroupCounterType</name>
<synopsis>Counters per group</synopsis>
<struct>
<component componentID="1">
<name>ReferenceCount</name>
<synopsis>Flow Entries</synopsis>
<typeRef>uint32</typeRef>
</component>
<component componentID="2">
<name>PacketCount</name>
<synopsis>Packet Count</synopsis>
<typeRef>uint64</typeRef>
</component>
<component componentID="3">
<name>ByteCount</name>
<synopsis>Byte Count</synopsis>
<typeRef>uint64</typeRef>
</component>
</struct>
</dataTypeDef>
<dataTypeDef>
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<name>GroupBucketExecuteType</name>
<synopsis>To determine which Action Bucket(s) should be
executed</synopsis>
<atomic>
<baseType>uchar</baseType>
<specialValues>
<specialValue value="1">
<name>all</name>
<synopsis>Execute all buckets in the group. This
group is used for multicast or broadcast
forwarding. The packet is effectively cloned for
each bucket; one packet is processed for each
bucket of the group. If a bucket directs a packet
explicitly out the ingress port, this packet
clone is dropped. If the controller writer wants
to forward out the ingress port, the group should
include an extra bucket which includes an output
action to the OFPP_IN_PORT virtual port.
</synopsis>
</specialValue>
<specialValue value="2">
<name>select</name>
<synopsis>Execute one bucket in the group. Packets
are sent to a single bucket in the group, based
on a switch-computed selection algorithm (e.g.
hash on some user-configured tuple or simple
round robin). All configuration and state for the
selection algorithm is external to OpenFlow. When
a port speciffied in a bucket in a select group
goes down, the switch may restrict bucket
selection to the remaining set (those with
forwarding actions to live ports) instead of
dropping packets destined to that port. This
behavior may reduce the disruption of a downed
link or switch.</synopsis>
</specialValue>
<specialValue value="3">
<name>indirect</name>
<synopsis>Execute the one defined bucket in this
group. Allows multiple flows or groups to point
to a common group identifier, supporting faster,
more efficient convergence (e.g. next hops for IP
forwarding). This group type is effectively
identical to an all group with one bucket.
</synopsis>
</specialValue>
<specialValue value="4">
<name>fastfailover</name>
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<synopsis>Execute the first live bucket. Each action
bucket is associated with a specific port and/or
group that controls its liveness. Enables the
switch to change forwarding without requiring a
round trip to the controller. If no buckets are
live, packets are dropped. This group type must
implement a liveness mechanism</synopsis>
</specialValue>
</specialValues>
</atomic>
</dataTypeDef>
<dataTypeDef>
<name>BucketCounterType</name>
<synopsis>Counters per bucket</synopsis>
<struct>
<component componentID="1">
<name>PacketCount</name>
<synopsis>Packet Count</synopsis>
<typeRef>uint64</typeRef>
</component>
<component componentID="2">
<name>ByteCount</name>
<synopsis>Byte Count</synopsis>
<typeRef>uint64</typeRef>
</component>
</struct>
</dataTypeDef>
<dataTypeDef>
<name>GroupTableEntry</name>
<synopsis>A Row of the Group Table</synopsis>
<struct>
<component componentID="1">
<name>GroupID</name>
<synopsis>Group Identifier uniquely identifying the
group</synopsis>
<typeRef>uint32</typeRef>
</component>
<component componentID="2">
<name>GroupType</name>
<synopsis>The group type to determine which action
bucket will be executed.</synopsis>
<typeRef>GroupBucketExecuteType</typeRef>
</component>
<component componentID="3">
<name>GroupCounters</name>
<synopsis>Counters per group</synopsis>
<typeRef>GroupCounterType</typeRef>
</component>
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<component componentID="4">
<name>ActionBuckets</name>
<synopsis>An ordered list of action buckets. Each
action bucket is a set of actions similar to a flow
table.</synopsis>
<array>
<typeRef>ActionBucket</typeRef>
</array>
</component>
</struct>
</dataTypeDef>
<dataTypeDef>
<name>ActionBucket</name>
<synopsis>An Action Bucket</synopsis>
<struct>
<component componentID="1">
<name>Weight</name>
<synopsis>Relative weight of bucket. Only defined for
select groups.</synopsis>
<typeRef>uint16</typeRef>
</component>
<component componentID="2">
<name>WatchPort</name>
<synopsis>Port whose state affects whether this bucket
is live. Required for fast failover group</synopsis>
<typeRef>uint32</typeRef>
</component>
<component componentID="3">
<name>WatchGroup</name>
<synopsis>Group whose state affects whether this group
is live. Only required for fast failover groups
</synopsis>
<typeRef>uint32</typeRef>
</component>
<component componentID="4">
<name>Actions</name>
<synopsis>Actions for this bucket</synopsis>
<typeRef>Actions</typeRef>
</component>
<component componentID="5">
<name>BucketCounter</name>
<synopsis>A counter for this bucket</synopsis>
<typeRef>BucketCounterType</typeRef>
</component>
</struct>
</dataTypeDef>
<dataTypeDef>
<name>PortNumberType</name>
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<synopsis>Port Number values</synopsis>
<atomic>
<baseType>uint32</baseType>
<specialValues>
<specialValue value="0xfffffff8">
<name>InPort</name>
<synopsis>Sent the packet out the input port. This
virtual port must be explicitly used in order to
send back out of the input port</synopsis>
</specialValue>
<specialValue value="0xfffffff9">
<name>Table</name>
<synopsis>Submit the packet to the first flow table.
NBL This destination port can only be used in
packet-out messages</synopsis>
</specialValue>
<specialValue value="0xfffffffa">
<name>Normal</name>
<synopsis>Process with normal L2/L3 switching
</synopsis>
</specialValue>
<specialValue value="0xfffffffb">
<name>Flood</name>
<synopsis>Send the packet to all physical ports in
VLAN, except input port and those blocked or link
down.</synopsis>
</specialValue>
<specialValue value="0xfffffffc">
<name>All</name>
<synopsis>Send the packet to all physical ports,
except input port.</synopsis>
</specialValue>
<specialValue value="0xfffffffd">
<name>Controller</name>
<synopsis>Send the packet to the controller.
</synopsis>
</specialValue>
<specialValue value="0xfffffffe">
<name>Local</name>
<synopsis>Local openflow "port".</synopsis>
</specialValue>
<specialValue value="0xffffffff">
<name>Any</name>
<synopsis>Wildcard port used only for flow mod
(delete) and flow stats requests. Selects all
flows regardless of output port (including flows
with no output port).</synopsis>
</specialValue>
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</specialValues>
</atomic>
</dataTypeDef>
<dataTypeDef>
<name>PortConfigurationType</name>
<synopsis>Types of configuration for the OpenFlow port
</synopsis>
<struct>
<component componentID="1">
<name>PortDown</name>
<synopsis>Port is administatively down</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="2">
<name>NoReceiving</name>
<synopsis>Drop all packets received by this port
</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="3">
<name>NoForwarding</name>
<synopsis>Drop packets forwarded to the port</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="4">
<name>NoPacket_In</name>
<synopsis>Do not send packet-in messages for port
</synopsis>
<typeRef>boolean</typeRef>
</component>
</struct>
</dataTypeDef>
<dataTypeDef>
<name>PortStateType</name>
<synopsis>Current State of the port</synopsis>
<struct>
<component componentID="1">
<name>LinkDown</name>
<synopsis>No physical link present</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="2">
<name>PortBlocked</name>
<synopsis>Port is blocked</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="3">
<name>PortLive</name>
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<synopsis>Live for Fast Failover Group</synopsis>
<typeRef>boolean</typeRef>
</component>
</struct>
</dataTypeDef>
<dataTypeDef>
<name>PortFeaturesType</name>
<synopsis>Port Features</synopsis>
<struct>
<component componentID="1">
<name>SpeedTypes</name>
<synopsis>Types of Speed supported</synopsis>
<struct>
<component componentID="1">
<name>10MB_HD</name>
<synopsis>10 Mb half-duplex rate support.
</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="2">
<name>10MB_FD</name>
<synopsis>10 Mb full-duplex rate support.
</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="3">
<name>100MB_HD</name>
<synopsis>100 Mb half-duplex rate support.
</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="4">
<name>100MB_FD</name>
<synopsis>100 Mb full-duplex rate support.
</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="5">
<name>1GB_HD</name>
<synopsis>1 Gb half-duplex rate support.
</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="6">
<name>1GB_FD</name>
<synopsis>1 Gb full-duplex rate support.
</synopsis>
<typeRef>boolean</typeRef>
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</component>
<component componentID="7">
<name>10GB_FD</name>
<synopsis>10 Gb full-duplex rate support.
</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="8">
<name>40GB_FD</name>
<synopsis>40 Gb full-duplex rate support.
</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="9">
<name>100GB_FD</name>
<synopsis>100 Gb full-duplex rate support.
</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="10">
<name>1TB_FD</name>
<synopsis>1 Tb full-duplex rate support.
</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="11">
<name>Other</name>
<synopsis>Other rate, not listed.</synopsis>
<typeRef>boolean</typeRef>
</component>
</struct>
</component>
<component componentID="2">
<name>MediumConnected</name>
<synopsis>Medium Connected to the port</synopsis>
<struct>
<component componentID="1">
<name>Copper</name>
<synopsis>Copper Medium</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="2">
<name>Fiber</name>
<synopsis>Fiber Medium</synopsis>
<typeRef>boolean</typeRef>
</component>
</struct>
</component>
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<component componentID="3">
<name>Auto</name>
<synopsis>Auto-negotiation</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="4">
<name>PauseTypes</name>
<synopsis>Pause Types supported of the port</synopsis>
<struct>
<component componentID="1">
<name>Pause</name>
<synopsis>Pause</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="2">
<name>AsymmetricPause</name>
<synopsis>Asymmetric pause</synopsis>
<typeRef>boolean</typeRef>
</component>
</struct>
</component>
</struct>
</dataTypeDef>
<dataTypeDef>
<name>PortCounterType</name>
<synopsis>Counter per port</synopsis>
<struct>
<component componentID="1">
<name>ReceivedPackets</name>
<synopsis>Packets Received</synopsis>
<typeRef>uint64</typeRef>
</component>
<component componentID="2">
<name>TransmittedPackets</name>
<synopsis>Packets Transmitted</synopsis>
<typeRef>uint64</typeRef>
</component>
<component componentID="3">
<name>ReceivedBytes</name>
<synopsis>Bytes Received</synopsis>
<typeRef>uint64</typeRef>
</component>
<component componentID="4">
<name>TransmittedBytes</name>
<synopsis>Bytes Transmitted</synopsis>
<typeRef>uint64</typeRef>
</component>
<component componentID="5">
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<name>ReceivedDrops</name>
<synopsis>Drops Received</synopsis>
<typeRef>uint64</typeRef>
</component>
<component componentID="6">
<name>TransmitDrops</name>
<synopsis>Transmit Drops</synopsis>
<typeRef>uint64</typeRef>
</component>
<component componentID="7">
<name>RecieveErrors</name>
<synopsis>Errors in reception</synopsis>
<typeRef>uint64</typeRef>
</component>
<component componentID="8">
<name>TransmitErrors</name>
<synopsis>Errors in transmittion</synopsis>
<typeRef>uint64</typeRef>
</component>
<component componentID="9">
<name>ReceivedFrameAlignmentErrors</name>
<synopsis>Frame Alignment Errors received</synopsis>
<typeRef>uint64</typeRef>
</component>
<component componentID="10">
<name>ReceiveOverrunErrors</name>
<synopsis>Received Overrun Errors</synopsis>
<typeRef>uint64</typeRef>
</component>
<component componentID="11">
<name>ReceivedCRCErrors</name>
<synopsis>CRC Errors in received packets</synopsis>
<typeRef>uint64</typeRef>
</component>
<component componentID="12">
<name>Collisions</name>
<synopsis>Collisions</synopsis>
<typeRef>uint64</typeRef>
</component>
</struct>
</dataTypeDef>
<dataTypeDef>
<name>QueuePropertyType</name>
<synopsis>Property type for a queue</synopsis>
<atomic>
<baseType>uint16</baseType>
<specialValues>
<specialValue value="0">
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<name>None</name>
<synopsis>No property defined</synopsis>
</specialValue>
<specialValue value="1">
<name>MinimumRate</name>
<synopsis>Minimum datarate guaranteed</synopsis>
</specialValue>
</specialValues>
</atomic>
</dataTypeDef>
<dataTypeDef>
<name>QueueArrayPropertiesType</name>
<synopsis>Type Definition for property</synopsis>
<struct>
<component componentID="1">
<name>Property</name>
<synopsis>One of Queue Priority Types</synopsis>
<typeRef>QueuePropertyType</typeRef>
</component>
<component componentID="2">
<name>Length</name>
<synopsis>Length of property</synopsis>
<typeRef>uint32</typeRef>
</component>
</struct>
</dataTypeDef>
<dataTypeDef>
<name>QueueCounterType</name>
<synopsis>Counters per queue</synopsis>
<struct>
<component componentID="1">
<name>TransmitPackets</name>
<synopsis>Packets Transmitted</synopsis>
<typeRef>uint64</typeRef>
</component>
<component componentID="2">
<name>TransmitBytes</name>
<synopsis>Bytes Transmitted</synopsis>
<typeRef>uint64</typeRef>
</component>
<component componentID="3">
<name>TransimtOverrunErrors</name>
<synopsis>Overrun Errors</synopsis>
<typeRef>uint64</typeRef>
</component>
</struct>
</dataTypeDef>
<dataTypeDef>
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<name>ActionRowType</name>
<synopsis>The ActionSet Row Type</synopsis>
<struct>
<component componentID="1">
<name>ActionTypes</name>
<synopsis>The type of action for the action set
</synopsis>
<typeRef>ActionType</typeRef>
</component>
<component componentID="2">
<name>LFBClassID</name>
<synopsis>The LFBClassID this action is supposed to go
</synopsis>
<typeRef>uint32</typeRef>
</component>
<component componentID="3">
<name>LFBInstanceID</name>
<synopsis>The LFBInstanceID this action is supposed to
go</synopsis>
<typeRef>uint32</typeRef>
</component>
<component componentID="4">
<name>ActionTableIndex</name>
<synopsis>The index of the action in the
LFBClass.LFBInstance. If the LFB class is a group,
then the index is the group index.</synopsis>
<optional/>
<typeRef>uint32</typeRef>
</component>
</struct>
</dataTypeDef>
</dataTypeDefs>
<metadataDefs>
<metadataDef>
<name>IngressPort</name>
<synopsis>The Ingress port the packet has arrived from.
</synopsis>
<metadataID>1024</metadataID>
<typeRef>uint32</typeRef>
</metadataDef>
<metadataDef>
<name>InPhyPort</name>
<synopsis>The Port Index of the Physical interface the frame
entered the switch</synopsis>
<metadataID>1025</metadataID>
<typeRef>uint32</typeRef>
</metadataDef>
<metadataDef>
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<name>PacketID</name>
<synopsis>The PacketID metadata is used to uniquely identify
a packet within the Flow Table or the Group Table to
continue processing it after it has been returned from an
OFActionLFB.</synopsis>
<metadataID>1026</metadataID>
<typeRef>uint32</typeRef>
</metadataDef>
<metadataDef>
<name>ActionIndex</name>
<synopsis>The Action Index metadata is used to point the row
in the array in an Action LFB</synopsis>
<metadataID>1027</metadataID>
<typeRef>uint32</typeRef>
</metadataDef>
<metadataDef>
<name>GroupIndex</name>
<synopsis>The Group index metadata is used to point to the
row of the array in an Group LFB</synopsis>
<metadataID>1028</metadataID>
<typeRef>uint32</typeRef>
</metadataDef>
<metadataDef>
<name>LFBClassIDMetadata</name>
<synopsis>The LFBClassID</synopsis>
<metadataID>1029</metadataID>
<typeRef>uint32</typeRef>
</metadataDef>
<metadataDef>
<name>LFBInstanceIDMetadata</name>
<synopsis>The LFB Instance ID</synopsis>
<metadataID>1030</metadataID>
<typeRef>uint32</typeRef>
</metadataDef>
<metadataDef>
<name>QueueID</name>
<synopsis>The Queue ID</synopsis>
<metadataID>1031</metadataID>
<typeRef>uint32</typeRef>
</metadataDef>
<metadataDef>
<name>BufferID</name>
<synopsis>The Buffer ID of a stored packet in the switch
requried for the PacketOut message</synopsis>
<metadataID>1032</metadataID>
<typeRef>uint32</typeRef>
</metadataDef>
<metadataDef>
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<name>RedirectReason</name>
<synopsis>The reason the packet was redirected to the
controller</synopsis>
<metadataID>1033</metadataID>
<atomic>
<baseType>uchar</baseType>
<specialValues>
<specialValue value="1">
<name>NoMatch</name>
<synopsis>No match on the Flow Table (table miss)
</synopsis>
</specialValue>
<specialValue value="2">
<name>Action</name>
<synopsis>Specific Output to controller action.
</synopsis>
</specialValue>
</specialValues>
</atomic>
</metadataDef>
<metadataDef>
<name>FlowTableID</name>
<synopsis>The FlowTable ID the packet was sent to the
controller from</synopsis>
<metadataID>1034</metadataID>
<typeRef>uchar</typeRef>
</metadataDef>
<metadataDef>
<name>ActionList</name>
<synopsis>The Action List that may come along with the packet
in a PacketOut message</synopsis>
<metadataID>1035</metadataID>
<array>
<typeRef>ActionRowType</typeRef>
</array>
</metadataDef>
<metadataDef>
<name>ActionSet</name>
<synopsis>The Action Set per packet.</synopsis>
<metadataID>1036</metadataID>
<array>
<typeRef>ActionRowType</typeRef>
<contentKey contentKeyID="1">
<contentKeyField>ActionTypes</contentKeyField>
</contentKey>
</array>
</metadataDef>
</metadataDefs>
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<LFBClassDefs>
<LFBClassDef LFBClassID="1024">
<name>OFSwitch</name>
<synopsis>Similar to the FEProtocol and FEObject LFB, the
OpenFlowSwitch LFB contains information required for the
openflow protocol.</synopsis>
<version>1.1</version>
<components>
<component componentID="1" access="read-only">
<name>DatapathID</name>
<synopsis>Datapath unique ID. The lower 48-bits are for
a MAC address, while the upper 16-bits are
implementer-defined.</synopsis>
<typeRef>uint64</typeRef>
</component>
<component componentID="2" access="read-write">
<name>HandleFragments</name>
<synopsis>if true drop fragments. If false no special
handling.</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="3" access="read-write">
<name>ReassembleFragments</name>
<synopsis>If true, reassemble fragments</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="4" access="read-write">
<name>InvalidTTLtoController</name>
<synopsis>Send packets with invalid TTL ie. 0 or 1 to
controller</synopsis>
<typeRef>boolean</typeRef>
</component>
<component componentID="5" access="read-only">
<name>SwitchDescription</name>
<synopsis>Information about the switch</synopsis>
<typeRef>SwitchDescriptionType</typeRef>
</component>
<component componentID="6" access="read-write">
<name>Ports</name>
<synopsis>The Ports that this switch has. It is an
array of the Port Numbers</synopsis>
<array>
<typeRef>uint32</typeRef>
</array>
</component>
</components>
<capabilities>
<capability componentID="31">
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<name>FlowStatistics</name>
<synopsis>Whether the switch keep flow statistics
</synopsis>
<typeRef>boolean</typeRef>
</capability>
<capability componentID="32">
<name>TableStatistics</name>
<synopsis>Whether the switch keep table statistics
</synopsis>
<typeRef>boolean</typeRef>
</capability>
<capability componentID="33">
<name>PortStatistics</name>
<synopsis>Whether the switch keep port statistics
</synopsis>
<typeRef>boolean</typeRef>
</capability>
<capability componentID="34">
<name>GroupStatistics</name>
<synopsis>Whether the switch keep group statistics
</synopsis>
<typeRef>boolean</typeRef>
</capability>
<capability componentID="35">
<name>IPReassembly</name>
<synopsis>Whether the switch can reassemble IP
fragments</synopsis>
<typeRef>boolean</typeRef>
</capability>
<capability componentID="36">
<name>QueueStats</name>
<synopsis>Whether the switch keeps queue statistics
</synopsis>
<typeRef>boolean</typeRef>
</capability>
<capability componentID="37">
<name>ARPMatchIP</name>
<synopsis>Whether the switch matches IP addresses in
APR packets</synopsis>
<typeRef>boolean</typeRef>
</capability>
<capability componentID="38">
<name>ActionsSupported</name>
<synopsis>What actions are supported</synopsis>
<array>
<atomic>
<baseType>ActionType</baseType>
<rangeRestriction>
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<allowedRange min="0" max="65534"/>
</rangeRestriction>
</atomic>
<contentKey contentKeyID="1">
<contentKeyField>ActionType</contentKeyField>
</contentKey>
</array>
</capability>
<capability componentID="39">
<name>TablesSupported</name>
<synopsis>Number of tables supported by the datapath
</synopsis>
<typeRef>uchar</typeRef>
</capability>
</capabilities>
<events baseID="61">
<event eventID="1">
<name>PortAdded</name>
<synopsis> This event is sent when a port is added
</synopsis>
<eventTarget>
<eventField>Ports</eventField>
</eventTarget>
<eventCreated/>
</event>
<event eventID="2">
<name>PortDeleted</name>
<synopsis>This event is sent when a port is deleted
</synopsis>
<eventTarget>
<eventField>Ports</eventField>
</eventTarget>
<eventDeleted/>
</event>
<event eventID="3">
<name>PortModified</name>
<synopsis>This event is sent when a port is modified
</synopsis>
<eventTarget>
<eventField>Ports</eventField>
</eventTarget>
<eventChanged/>
</event>
</events>
</LFBClassDef>
<LFBClassDef LFBClassID="1025">
<name>OFFlowTables</name>
<synopsis>An LFB that houses all OpenFlow Flow Tables
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residing in the switch</synopsis>
<version>1.1</version>
<inputPorts>
<inputPort group="true">
<name>InputPort</name>
<synopsis>An Input port that expects packets from an
OFPort LFB</synopsis>
<expectation>
<frameExpected>
<ref>Arbitrary</ref>
</frameExpected>
<metadataExpected>
<ref>IngressPort</ref>
<ref>InPhyPort</ref>
</metadataExpected>
</expectation>
</inputPort>
<inputPort group="true">
<name>PacketReturn</name>
<synopsis>A port that expects the packet to be returned
from an OFActionLFB. If the OFActionLFB is the
OFQueueLFB then the QueueID metadata is expected as
well.</synopsis>
<expectation>
<frameExpected>
<ref>Arbitrary</ref>
</frameExpected>
<metadataExpected>
<ref>PacketID</ref>
<ref dependency="optional">QueueID</ref>
</metadataExpected>
</expectation>
</inputPort>
<inputPort group="true">
<name>RedirectPacketIn</name>
<synopsis>A port that expects a packet from the
controller</synopsis>
<expectation>
<frameExpected>
<ref>Arbitrary</ref>
</frameExpected>
<metadataExpected>
<ref>ActionList</ref>
<ref>IngressPort</ref>
</metadataExpected>
</expectation>
</inputPort>
</inputPorts>
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<outputPorts>
<outputPort group="false">
<name>OutputPort</name>
<synopsis>A port that produces packets leaving the flow
table to go to the OFOutputAction (to be sent to an
output port)</synopsis>
<product>
<frameProduced>
<ref>Arbitrary</ref>
</frameProduced>
<metadataProduced>
<ref>IngressPort</ref>
<ref>InPhyPort</ref>
<ref availability="conditional">QueueID</ref>
</metadataProduced>
</product>
</outputPort>
<outputPort group="false">
<name>GroupPort</name>
<synopsis>A port that produces packets leaving the flow
table to go to the OFGroupTable.</synopsis>
<product>
<frameProduced>
<ref>Arbitrary</ref>
</frameProduced>
<metadataProduced>
<ref>IngressPort</ref>
<ref>InPhyPort</ref>
<ref>GroupIndex</ref>
<ref availability="conditional">QueueID</ref>
</metadataProduced>
</product>
</outputPort>
<outputPort group="true">
<name>ActionPort</name>
<synopsis>A port that sends the packet to an OFAction
LFB</synopsis>
<product>
<frameProduced>
<ref>Arbitrary</ref>
</frameProduced>
<metadataProduced>
<ref>LFBClassIDMetadata</ref>
<ref>PacketID</ref>
<ref availability="conditional">ActionIndex</ref>
</metadataProduced>
</product>
</outputPort>
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<outputPort group="false">
<name>ActionSetPort</name>
<synopsis>A port that sends the packet to the ActionSet
LFB</synopsis>
<product>
<frameProduced>
<ref>Arbitrary</ref>
</frameProduced>
<metadataProduced>
<ref>IngressPort</ref>
<ref>InPhyPort</ref>
<ref>ActionSet</ref>
<ref availability="conditional">QueueID</ref>
</metadataProduced>
</product>
</outputPort>
<outputPort group="false">
<name>RedirectPacketOut</name>
<synopsis>A port that sends a packet or part of it to
the controller</synopsis>
<product>
<frameProduced>
<ref>Arbitrary</ref>
</frameProduced>
<metadataProduced>
<ref>IngressPort</ref>
<ref>InPhyPort</ref>
<ref>RedirectReason</ref>
<ref>FlowTableID</ref>
</metadataProduced>
</product>
</outputPort>
</outputPorts>
<components>
<component componentID="1" access="read-write">
<name>FlowTables</name>
<synopsis>Flow entries inside the FlowTable LFB
</synopsis>
<array>
<struct>
<component componentID="1">
<name>FlowEntries</name>
<synopsis>An array of Flow Entries</synopsis>
<array>
<typeRef>FlowEntry</typeRef>
</array>
</component>
<component componentID="2">
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<name>FlowTableCounter</name>
<synopsis>A counter for each Flow Table
</synopsis>
<typeRef>TableCounterType</typeRef>
</component>
<component componentID="3">
<name>MissBehaviour</name>
<synopsis>What should the FlowTable do if a
miss occurs</synopsis>
<typeRef>FlowTableMissConfigType</typeRef>
</component>
</struct>
</array>
</component>
<component componentID="2" access="read-write">
<name>ApplyActionList</name>
<synopsis>Table of actions for each flow</synopsis>
<array>
<typeRef>Actions</typeRef>
</array>
</component>
<component componentID="3" access="read-write">
<name>WriteActions</name>
<synopsis>Table of Actions to write to the ActionSet
</synopsis>
<array>
<typeRef>Actions</typeRef>
</array>
</component>
<component componentID="4" access="read-write">
<name>WriteMetadataTable</name>
<synopsis>The write MetaDataTable</synopsis>
<array>
<typeRef>WriteMetadataTableType</typeRef>
</array>
</component>
<component componentID="5" access="read-write">
<name>GotoFlowTable</name>
<synopsis>Containing the FlowTable IDs this flow should
go to.</synopsis>
<array>
<typeRef>uint32</typeRef>
</array>
</component>
<component componentID="6" access="read-write">
<name>GroupTable</name>
<synopsis>Table of group indeces to point a packet to
</synopsis>
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<array>
<typeRef>uint32</typeRef>
</array>
</component>
</components>
<events baseID="61">
<event eventID="1">
<name>FlowRemoved</name>
<synopsis>If a CE subscribes to this event, it will
send an event when a flow is removed.</synopsis>
<eventTarget>
<eventField>FlowEntries</eventField>
<eventSubscript>FlowEntry</eventSubscript>
</eventTarget>
<eventDeleted/>
<eventReports>
<eventReport>
<eventField>FlowTableID</eventField>
</eventReport>
<eventReport>
<eventField>FlowEntries</eventField>
<eventSubscript>FlowEntry</eventSubscript>
<eventField>Cookie</eventField>
</eventReport>
<eventReport>
<eventField>FlowEntries</eventField>
<eventSubscript>FlowEntry</eventSubscript>
<eventField>MatchFields</eventField>
</eventReport>
<eventReport>
<eventField>FlowEntries</eventField>
<eventSubscript>FlowEntry</eventSubscript>
<eventField>Timeouts</eventField>
<eventSubscript>IdleTimeout</eventSubscript>
</eventReport>
<eventReport>
<eventField>FlowEntries</eventField>
<eventSubscript>FlowEntry</eventSubscript>
<eventField>Priority</eventField>
</eventReport>
</eventReports>
</event>
</events>
</LFBClassDef>
<LFBClassDef LFBClassID="1026">
<name>OFGroupTable</name>
<synopsis>The OpenFlow Group Tables</synopsis>
<version>1.1</version>
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<inputPorts>
<inputPort group="false">
<name>PacketIn</name>
<synopsis>A port to expect packets, the GroupIndex
metadata, the IngressPort and InPhyPort and
optionally the QueueID if the packet has already
been through the OFActionSetQueue LFB.</synopsis>
<expectation>
<frameExpected>
<ref>Arbitrary</ref>
</frameExpected>
<metadataExpected>
<ref>GroupIndex</ref>
<ref>IngressPort</ref>
<ref>InPhyPort</ref>
<ref dependency="optional">QueueID</ref>
</metadataExpected>
</expectation>
</inputPort>
<inputPort group="true">
<name>PacketReturn</name>
<synopsis>A port that expects the packet to be returned
from an OFActionLFB. If the OFActionLFB is the
OFQueueLFB then the QueueID metadata is expected as
well.</synopsis>
<expectation>
<frameExpected>
<ref>Arbitrary</ref>
</frameExpected>
<metadataExpected>
<ref>PacketID</ref>
<ref dependency="optional">QueueID</ref>
</metadataExpected>
</expectation>
</inputPort>
</inputPorts>
<outputPorts>
<outputPort group="true">
<name>PacketOut</name>
<synopsis>The port to return the packet to caller
</synopsis>
<product>
<frameProduced>
<ref>Arbitrary</ref>
</frameProduced>
</product>
</outputPort>
<outputPort group="true">
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<name>ActionPort</name>
<synopsis>A port that sends the packet to an
OFActionLFB</synopsis>
<product>
<frameProduced>
<ref>Arbitrary</ref>
</frameProduced>
<metadataProduced>
<ref>LFBClassIDMetadata</ref>
<ref>LFBInstanceIDMetadata</ref>
<ref availability="conditional">ActionIndex</ref>
</metadataProduced>
</product>
</outputPort>
</outputPorts>
<components>
<component componentID="1" access="read-write">
<name>GroupTable</name>
<synopsis>The group table</synopsis>
<array>
<typeRef>GroupTableEntry</typeRef>
</array>
</component>
</components>
</LFBClassDef>
<LFBClassDef LFBClassID="1027">
<name>OFPort</name>
<synopsis>Input or Output port of an OpenFlow switch
</synopsis>
<version>1.1</version>
<inputPorts>
<inputPort group="false">
<name>PacketOut</name>
<synopsis>The input port of the Port LFB from the
OFActionOutput LFB to output packets.</synopsis>
<expectation>
<frameExpected>
<ref>Arbitrary</ref>
</frameExpected>
<metadataExpected>
<ref dependency="optional">QueueID</ref>
</metadataExpected>
</expectation>
</inputPort>
</inputPorts>
<outputPorts>
<outputPort group="false">
<name>PacketIn</name>
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<synopsis>Sends a packet to the OFFlowTables that is
received by the OFPort LFB.</synopsis>
<product>
<frameProduced>
<ref>Arbitrary</ref>
</frameProduced>
<metadataProduced>
<ref>IngressPort</ref>
<ref>InPhyPort</ref>
</metadataProduced>
</product>
</outputPort>
<outputPort group="true">
<name>QueueOut</name>
<synopsis>Sends a packet to the OFQueue LFB to be
processed and output from the switch</synopsis>
<product>
<frameProduced>
<ref>Arbitrary</ref>
</frameProduced>
</product>
</outputPort>
</outputPorts>
<components>
<component componentID="1" access="read-only">
<name>PortNumber</name>
<synopsis>The port number uniquely identifies a port
within a switch.</synopsis>
<typeRef>PortNumberType</typeRef>
</component>
<component componentID="2" access="read-only">
<name>IEEEMAC</name>
<synopsis>MAC Address of the port</synopsis>
<typeRef>IEEEMAC</typeRef>
</component>
<component componentID="3" access="read-only">
<name>Name</name>
<synopsis>Human readable name of the port</synopsis>
<typeRef>string[16]</typeRef>
</component>
<component componentID="4" access="read-write">
<name>Configuration</name>
<synopsis>Configuration of the port</synopsis>
<typeRef>PortConfigurationType</typeRef>
</component>
<component componentID="5" access="read-only">
<name>State</name>
<synopsis>State of the OpenFlow Switch</synopsis>
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<typeRef>PortStateType</typeRef>
</component>
<component componentID="6" access="read-only">
<name>CurrentFeatures</name>
<synopsis>Current features of the port</synopsis>
<typeRef>PortFeaturesType</typeRef>
</component>
<component componentID="7" access="read-write">
<name>Advertised</name>
<synopsis>Features advertised by the port</synopsis>
<typeRef>PortFeaturesType</typeRef>
</component>
<component componentID="8" access="read-only">
<name>CurrentSpeed</name>
<synopsis>Current port bitrate in kbps</synopsis>
<typeRef>uint32</typeRef>
</component>
<component componentID="9" access="read-only">
<name>MaximumSpeed</name>
<synopsis>Maximum port bitrate in kbps</synopsis>
<typeRef>uint32</typeRef>
</component>
<component componentID="10" access="read-only">
<name>PortCounter</name>
<synopsis>Counters for the port</synopsis>
<typeRef>PortCounterType</typeRef>
</component>
</components>
<capabilities>
<capability componentID="31">
<name>Supported</name>
<synopsis>Features Supported by the port</synopsis>
<typeRef>PortFeaturesType</typeRef>
</capability>
<capability componentID="32">
<name>Peer</name>
<synopsis>Features advertised by the peer</synopsis>
<typeRef>PortFeaturesType</typeRef>
</capability>
</capabilities>
</LFBClassDef>
<LFBClassDef LFBClassID="1028">
<name>OFQueue</name>
<synopsis>A queue LFB that can be attached to a port and be
used to map flows on it. Flows mapped to a queue will be
treated according to that queue's configuration</synopsis>
<version>1.1</version>
<inputPorts>
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<inputPort group="true">
<name>PacketIn</name>
<synopsis>An input port that expects any kind of frame.
</synopsis>
<expectation>
<frameExpected>
<ref>Arbitrary</ref>
</frameExpected>
</expectation>
</inputPort>
</inputPorts>
<components>
<component componentID="1" access="read-only">
<name>QueueID</name>
<synopsis>ID for the specific queue</synopsis>
<typeRef>uint32</typeRef>
</component>
<component componentID="2" access="read-write">
<name>Properties</name>
<synopsis>List of queue properties</synopsis>
<array>
<typeRef>QueueArrayPropertiesType</typeRef>
</array>
</component>
<component componentID="3" access="read-only">
<name>QueueCounter</name>
<synopsis>Counters for the queue</synopsis>
<typeRef>QueueCounterType</typeRef>
</component>
</components>
</LFBClassDef>
<LFBClassDef LFBClassID="1029">
<name>OFRedirectIn</name>
<synopsis>The OFRedirectIn LFB abstracts the process for the
controller to inject data packets into the switch to input
data packets into the data path.</synopsis>
<version>1.1</version>
<derivedFrom>RedirectIn</derivedFrom>
<outputPorts>
<outputPort group="false">
<name>PacketIn</name>
<synopsis>An output port that sends a packet in the
data path</synopsis>
<product>
<frameProduced>
<ref>Arbitrary</ref>
</frameProduced>
<metadataProduced>
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<ref>ActionList</ref>
<ref>IngressPort</ref>
</metadataProduced>
</product>
</outputPort>
<outputPort group="false">
<name>BufferIn</name>
<synopsis>An output port that sends only the buffer id
to locate a buffered packet</synopsis>
<product>
<metadataProduced>
<ref>BufferID</ref>
<ref>ActionList</ref>
<ref>IngressPort</ref>
</metadataProduced>
</product>
</outputPort>
</outputPorts>
</LFBClassDef>
<LFBClassDef LFBClassID="1030">
<name>OFRedirectOut</name>
<synopsis>The OFRedirectOut LFB abstracts the process for the
switch to deliver data packets to the controller
</synopsis>
<version>1.1</version>
<derivedFrom>RedirectOut</derivedFrom>
<inputPorts>
<inputPort group="true">
<name>Outgoing</name>
<synopsis>The input port expects either the whole
packet to be sent to the controller or part of it
along with the buffer ID</synopsis>
<expectation>
<frameExpected>
<ref>Arbitrary</ref>
</frameExpected>
<metadataExpected>
<ref>IngressPort</ref>
<ref>InPhyPort</ref>
<ref>RedirectReason</ref>
<ref dependency="optional">FlowTableID</ref>
<ref dependency="optional">BufferID</ref>
</metadataExpected>
</expectation>
</inputPort>
</inputPorts>
</LFBClassDef>
<LFBClassDef LFBClassID="1031">
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<name>OFActionSet</name>
<synopsis>The ActionSet LFB</synopsis>
<version>1.1</version>
<inputPorts>
<inputPort group="false">
<name>PacketIn</name>
<synopsis>A port that expects a packet along with
metadata</synopsis>
<expectation>
<metadataExpected>
<ref>IngressPort</ref>
<ref>InPhyPort</ref>
<ref>ActionSet</ref>
<ref dependency="optional">QueueID</ref>
</metadataExpected>
</expectation>
</inputPort>
<inputPort group="true">
<name>PacketReturn</name>
<synopsis>A port that expects the packet to be returned
from an OFActionLFB. If the OFActionLFB is the
OFQueueLFB then the QueueID metadata is expected as
well.</synopsis>
<expectation>
<frameExpected>
<ref>Arbitrary</ref>
</frameExpected>
<metadataExpected>
<ref>PacketID</ref>
<ref dependency="optional">QueueID</ref>
</metadataExpected>
</expectation>
</inputPort>
</inputPorts>
<outputPorts>
<outputPort group="false">
<name>OutputPort</name>
<synopsis>A port that produces packets leaving the flow
table to go to the OFOutputAction (to be sent to an
output port)</synopsis>
<product>
<frameProduced>
<ref>Arbitrary</ref>
</frameProduced>
<metadataProduced>
<ref>IngressPort</ref>
<ref>InPhyPort</ref>
<ref availability="conditional">QueueID</ref>
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</metadataProduced>
</product>
</outputPort>
<outputPort group="false">
<name>GroupPort</name>
<synopsis>A port that produces packets leaving the flow
table to go to the OFGroupTable.</synopsis>
<product>
<frameProduced>
<ref>Arbitrary</ref>
</frameProduced>
<metadataProduced>
<ref>IngressPort</ref>
<ref>InPhyPort</ref>
<ref>GroupIndex</ref>
<ref availability="conditional">QueueID</ref>
</metadataProduced>
</product>
</outputPort>
<outputPort group="true">
<name>ActionPort</name>
<synopsis>A port that sends the packet to an OFAction
LFB</synopsis>
<product>
<frameProduced>
<ref>Arbitrary</ref>
</frameProduced>
<metadataProduced>
<ref>LFBClassIDMetadata</ref>
<ref>PacketID</ref>
<ref availability="conditional">ActionIndex</ref>
</metadataProduced>
</product>
</outputPort>
</outputPorts>
</LFBClassDef>
<LFBClassDef LFBClassID="1032">
<name>OFBuffer</name>
<synopsis>An LFB that buffers packets and send them to the
controller</synopsis>
<version>1.1</version>
<inputPorts>
<inputPort group="false">
<name>FlowTableIn</name>
<synopsis>A packet received by a Flow Table to be
buffered and sent to the controller</synopsis>
<expectation>
<frameExpected>
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<ref>Arbitrary</ref>
</frameExpected>
<metadataExpected>
<ref>IngressPort</ref>
<ref>InPhyPort</ref>
</metadataExpected>
</expectation>
</inputPort>
<inputPort group="false">
<name>ControllerIn</name>
<synopsis>A Buffer ID received as metadata along with
optional Action list from the controller</synopsis>
<expectation>
<metadataExpected>
<ref>BufferID</ref>
<ref dependency="optional">ActionList</ref>
</metadataExpected>
</expectation>
</inputPort>
</inputPorts>
<outputPorts>
<outputPort group="false">
<name>ToFlowTable</name>
<synopsis>When a buffer ID has been received optionally
along with the Action List metadata it is sent to
the Flow Tables for process</synopsis>
<product>
<frameProduced>
<ref>Arbitrary</ref>
</frameProduced>
<metadataProduced>
<ref availability="conditional">ActionList</ref>
</metadataProduced>
</product>
</outputPort>
<outputPort group="false">
<name>ToRedirectOut</name>
<synopsis>When a packet has been received it will be
buffered and the buffer id will be sent to the
redirect out.</synopsis>
<product>
<metadataProduced>
<ref availability="unconditional">BufferID</ref>
</metadataProduced>
</product>
</outputPort>
</outputPorts>
<components>
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<component componentID="1" access="read-write">
<name>MissSendLen</name>
<synopsis>Max bytes of new flow that datapath should
send to the controller.</synopsis>
<typeRef>uint16</typeRef>
</component>
</components>
<capabilities>
<capability componentID="31">
<name>MaxBufferedPackets</name>
<synopsis>Maximum packets buffered at once.</synopsis>
<typeRef>uint32</typeRef>
</capability>
</capabilities>
</LFBClassDef>
<LFBClassDef LFBClassID="1033">
<name>OFAction</name>
<synopsis>An LFB that performs one specific action on a
packet in the OpenFlow switch. The OFActionLFB expects any
kind of packet and as metadata the FlowTableInstanceID to
know from which Flow Table the packet has arrived from and
the Action Index to specify the row in the Action Table,
if there is an Action table.</synopsis>
<version>1.1</version>
<inputPorts>
<inputPort group="true">
<name>PacketIn</name>
<synopsis>An input port that gets the packet to perform
the action on. Expects the ClassID of the LFB that
calls it to know to which LFB to return it to. Can
accept calls from the OFFlowTables or the
OFGroupLFB.</synopsis>
<expectation>
<frameExpected>
<ref>Arbitrary</ref>
</frameExpected>
<metadataExpected>
<ref>PacketID</ref>
<ref>LFBClassIDMetadata</ref>
<ref dependency="optional">ActionIndex</ref>
<ref dependency="optional">IngressPort</ref>
<ref dependency="optional">InPhyPort</ref>
<ref dependency="optional">QueueID</ref>
</metadataExpected>
</expectation>
</inputPort>
</inputPorts>
<outputPorts>
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<outputPort group="true">
<name>PacketOut</name>
<synopsis>The output port from which the packet will
be send back to the LFB (OFFlowTables or
OFGroupTable) from which it came from.</synopsis>
<product>
<frameProduced>
<ref>Arbitrary</ref>
</frameProduced>
<metadataProduced>
<ref>PacketID</ref>
</metadataProduced>
</product>
</outputPort>
</outputPorts>
</LFBClassDef>
<LFBClassDef LFBClassID="1034">
<name>OFActionOutput</name>
<synopsis>An LFB that performs the Output Action</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
<outputPorts>
<outputPort group="true">
<name>PortOutput</name>
<synopsis>Send a copy of the packet to the specified
port(s)</synopsis>
<product>
<frameProduced>
<ref>Arbitrary</ref>
</frameProduced>
</product>
</outputPort>
</outputPorts>
<components>
<component componentID="1" access="read-write">
<name>OutputActionTable</name>
<synopsis>Output to switch port</synopsis>
<array>
<struct>
<component componentID="1">
<name>Port</name>
<synopsis>The port to send the packet out
</synopsis>
<typeRef>PortNumberType</typeRef>
</component>
<component componentID="2">
<name>MaxLength</name>
<synopsis>If the port is the controller sets
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the maximum number of bytes to send.
</synopsis>
<typeRef>uint16</typeRef>
</component>
</struct>
</array>
</component>
</components>
</LFBClassDef>
<LFBClassDef LFBClassID="1035">
<name>OFActionSetVLANVID</name>
<synopsis>An LFB that performs the Set VLANID Action
</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
<components>
<component componentID="1" access="read-write">
<name>SetVLANVIDActionTable</name>
<synopsis>Set the 802.1q VLAN ID</synopsis>
<array>
<typeRef>uint16</typeRef>
</array>
</component>
</components>
</LFBClassDef>
<LFBClassDef LFBClassID="1036">
<name>SetVLANPriorityActionTable</name>
<synopsis>An LFB that performs the Set VLAN Priority Action
</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
<components>
<component componentID="1" access="read-write">
<name>SetVLANPriorityActionTable</name>
<synopsis>Set the 802.1q VLAN Priority</synopsis>
<array>
<typeRef>uchar</typeRef>
</array>
</component>
</components>
</LFBClassDef>
<LFBClassDef LFBClassID="1037">
<name>OFActionSetMACSource</name>
<synopsis>An LFB that performs the Set MAC Source Action
</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
<components>
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<component componentID="1" access="read-write">
<name>SetMACSourceActionTable</name>
<synopsis>Set MAC source address</synopsis>
<array>
<typeRef>IEEEMAC</typeRef>
</array>
</component>
</components>
</LFBClassDef>
<LFBClassDef LFBClassID="1038">
<name>OFActionSetMACDestination</name>
<synopsis>An LFB that performs the Set MAC Destination
Action</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
<components>
<component componentID="1" access="read-write">
<name>SetMACDestinationActionTable</name>
<synopsis>Set MAC destination address</synopsis>
<array>
<typeRef>IEEEMAC</typeRef>
</array>
</component>
</components>
</LFBClassDef>
<LFBClassDef LFBClassID="1039">
<name>OFActionSetIPSource</name>
<synopsis>An LFB that performs the Set IP Source Action
</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
<components>
<component componentID="1" access="read-write">
<name>SetIPSourceActionTable</name>
<synopsis>Set the IP source address</synopsis>
<array>
<typeRef>IPv4Addr</typeRef>
</array>
</component>
</components>
</LFBClassDef>
<LFBClassDef LFBClassID="1040">
<name>OFActionSetIPDestination</name>
<synopsis>An LFB that performs the Set IP Destination Action
</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
<components>
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<component componentID="1" access="read-write">
<name>SetIPDestinationActionTable</name>
<synopsis>Set the IP destination address</synopsis>
<array>
<typeRef>IPv4Addr</typeRef>
</array>
</component>
</components>
</LFBClassDef>
<LFBClassDef LFBClassID="1041">
<name>OFActionSetIPTOS</name>
<synopsis>An LFB that performs the Set VLANID Action
</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
<components>
<component componentID="1" access="read-write">
<name>SetIPTOSActionTable</name>
<synopsis>Set IP ToS field</synopsis>
<array>
<typeRef>uchar</typeRef>
</array>
</component>
</components>
</LFBClassDef>
<LFBClassDef LFBClassID="1042">
<name>OFActionSetIPECN</name>
<synopsis>An LFB that performs the Set IP ECN Action
</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
<components>
<component componentID="1" access="read-write">
<name>SetIPECNActionTable</name>
<synopsis>Set IP ECN field</synopsis>
<array>
<typeRef>uchar</typeRef>
</array>
</component>
</components>
</LFBClassDef>
<LFBClassDef LFBClassID="1043">
<name>OFActionSetTCPSource</name>
<synopsis>An LFB that performs the Set TCP/UDP/SCTP Source
port Action</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
<components>
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<component componentID="1" access="read-write">
<name>SetTCPSourceActionTable</name>
<synopsis>Sets TCP/UDP/SCTP source port</synopsis>
<array>
<typeRef>uint16</typeRef>
</array>
</component>
</components>
</LFBClassDef>
<LFBClassDef LFBClassID="1044">
<name>OFActionSetTCPDestination</name>
<synopsis>An LFB that performs the Set TCP/UDP/SCTP
Destination port Action</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
<components>
<component componentID="1" access="read-write">
<name>SetTCPDestinationActionTable</name>
<synopsis>Sets TCP/UDP/SCTP destination port
</synopsis>
<array>
<typeRef>uint16</typeRef>
</array>
</component>
</components>
</LFBClassDef>
<LFBClassDef LFBClassID="1045">
<name>OFActionCopyTTLOut</name>
<synopsis>An LFB that performs the copy TTL outwards Action
</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
</LFBClassDef>
<LFBClassDef LFBClassID="1046">
<name>OFActionCopyTTLIn</name>
<synopsis>An LFB that performs the copy TTL inwards Action
</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
</LFBClassDef>
<LFBClassDef LFBClassID="1047">
<name>OFActionSetMPLSLabel</name>
<synopsis>An LFB that performs the Set MPLS Label Action
</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
<components>
<component componentID="1" access="read-write">
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<name>SetMPLSLabelActionTable</name>
<synopsis>Sets MPLS Label Table</synopsis>
<array>
<typeRef>uint32</typeRef>
</array>
</component>
</components>
</LFBClassDef>
<LFBClassDef LFBClassID="1048">
<name>OFActionSetMPLSTC</name>
<synopsis>An LFB that performs the Set MPLS Traffic Class
Action</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
<components>
<component componentID="1" access="read-write">
<name>SetMPLSTCActionTable</name>
<synopsis>Sets MPLS Label Table</synopsis>
<array>
<typeRef>uchar</typeRef>
</array>
</component>
</components>
</LFBClassDef>
<LFBClassDef LFBClassID="1049">
<name>OFActionSetMPLSTTL</name>
<synopsis>An LFB that performs the Set MPLS TTL Action
</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
<components>
<component componentID="1" access="read-write">
<name>OFActionSetMPLSTTL</name>
<synopsis>Sets MPLS TTL Table</synopsis>
<array>
<typeRef>uchar</typeRef>
</array>
</component>
</components>
</LFBClassDef>
<LFBClassDef LFBClassID="1050">
<name>OFActionDecrementMPLSTTL</name>
<synopsis>An LFB that performs the decrementation of the
MPLS TTL Action</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
</LFBClassDef>
<LFBClassDef LFBClassID="1051">
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<name>OFActionPushVLan</name>
<synopsis>An LFB that performs the Push VLAN Action
</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
<components>
<component componentID="1" access="read-write">
<name>PushVLANTable</name>
<synopsis>Push VLAN Table</synopsis>
<array>
<typeRef>uint16</typeRef>
</array>
</component>
</components>
</LFBClassDef>
<LFBClassDef LFBClassID="1052">
<name>OFActionPopVLAN</name>
<synopsis>An LFB that performs the Pop VLAN Action
</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
</LFBClassDef>
<LFBClassDef LFBClassID="1053">
<name>OFActionPushMPLS</name>
<synopsis>An LFB that performs the Push MPLS Action
</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
<components>
<component componentID="1" access="read-write">
<name>PushMPLSTable</name>
<synopsis>Push MPLS Table</synopsis>
<array>
<typeRef>uint16</typeRef>
</array>
</component>
</components>
</LFBClassDef>
<LFBClassDef LFBClassID="1054">
<name>OFActionPopMPLS</name>
<synopsis>An LFB that performs the Pop MPLS Action
</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
<components>
<component componentID="1" access="read-write">
<name>PopMPLSTable</name>
<synopsis>Pop MPLS Table</synopsis>
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<array>
<typeRef>uint16</typeRef>
</array>
</component>
</components>
</LFBClassDef>
<LFBClassDef LFBClassID="1055">
<name>OFActionSetQueue</name>
<synopsis>An LFB that performs the Set Queue Action
</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
<outputPorts>
<outputPort group="true">
<name>QueuePacketOut</name>
<synopsis>The output port from which the packet will be
send back to the Flow Table/GroupTable from which it
came from.</synopsis>
<product>
<frameProduced>
<ref>Arbitrary</ref>
</frameProduced>
<metadataProduced>
<ref>PacketID</ref>
<ref>QueueID</ref>
</metadataProduced>
</product>
</outputPort>
</outputPorts>
<components>
<component componentID="1" access="read-write">
<name>SetQueueTable</name>
<synopsis>Sets Queue Table</synopsis>
<array>
<typeRef>uint32</typeRef>
</array>
</component>
</components>
</LFBClassDef>
<LFBClassDef LFBClassID="1056">
<name>OFActionSetIPTTL</name>
<synopsis>An LFB that performs the Set IP TTL Action
</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
<components>
<component componentID="1" access="read-write">
<name>SetIPTTLActionTable</name>
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<synopsis>Sets IP TTL Table</synopsis>
<array>
<typeRef>uchar</typeRef>
</array>
</component>
</components>
</LFBClassDef>
<LFBClassDef LFBClassID="1057">
<name>OFActionDecrementIPTTL</name>
<synopsis>An LFB that performs the decrementation of the IP
TTL Action</synopsis>
<version>1.1</version>
<derivedFrom>OFAction</derivedFrom>
</LFBClassDef>
</LFBClassDefs>
</LFBLibrary>
OpenFlow XML Library
7. Acknowledgements
The authors would like to thank Ahmad N. Quttoum, Zoltan Lajos Kis,
Joel Halpern and especially Jamal Hadi Salim, for discussions which
helped shape this document.
8. IANA Considerations
(TBD)
9. Security Considerations
TBD
10. References
10.1. Normative References
[I-D.haleplidis-forces-model-extension]
Haleplidis, E., "ForCES Model Extension", draft-
haleplidis-forces-model-extension-01 (work in progress),
October 2012.
[I-D.ietf-forces-lfb-lib]
Wang, W., Haleplidis, E., Ogawa, K., Li, C., and J.
Halpern, "ForCES Logical Function Block (LFB) Library",
draft-ietf-forces-lfb-lib-08 (work in progress), February
2012.
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[McKeown] , "McKeown, N., Anderson, T., Balakrishnan, H., et al,
"OpenFlow: enabling innovation in campus networks", ACM
SIGCOMM Computer Communication Review. 2008,
38(2):69-74.", , <http://www.OpenFlow.org/documents/
OpenFlow-spec-v1.1.0.pdf>.
[OpenFlowSpec1.1]
http://www.OpenFlow.org/, "The OpenFlow 1.1
Specification.", , <http://www.OpenFlow.org/documents/
OpenFlow-spec-v1.1.0.pdf>.
[RFC3654] Khosravi, H. and T. Anderson, "Requirements for Separation
of IP Control and Forwarding", RFC 3654, November 2003.
[RFC3746] Yang, L., Dantu, R., Anderson, T., and R. Gopal,
"Forwarding and Control Element Separation (ForCES)
Framework", RFC 3746, April 2004.
[RFC5810] Doria, A., Hadi Salim, J., Haas, R., Khosravi, H., Wang,
W., Dong, L., Gopal, R., and J. Halpern, "Forwarding and
Control Element Separation (ForCES) Protocol
Specification", RFC 5810, March 2010.
[RFC5811] Hadi Salim, J. and K. Ogawa, "SCTP-Based Transport Mapping
Layer (TML) for the Forwarding and Control Element
Separation (ForCES) Protocol", RFC 5811, March 2010.
[RFC5812] Halpern, J. and J. Hadi Salim, "Forwarding and Control
Element Separation (ForCES) Forwarding Element Model", RFC
5812, March 2010.
[RFC5813] Haas, R., "Forwarding and Control Element Separation
(ForCES) MIB", RFC 5813, March 2010.
[RFC6053] Haleplidis, E., Ogawa, K., Wang, W., and J. Hadi Salim,
"Implementation Report for Forwarding and Control Element
Separation (ForCES)", RFC 6053, November 2010.
10.2. Informative References
[RFC2629] Rose, M.T., "Writing I-Ds and RFCs using XML", RFC 2629,
June 1999.
Haleplidis, et al. Expires October 27, 2013 [Page 95]
Internet-Draft ForCES OpenFlow library April 2013
Authors' Addresses
Evangelos Haleplidis
University of Patras
Department of Electrical & Computer Engineering
Patras 26500
Greece
Email: ehalep@ece.upatras.gr
Omar Cherkaoui
University of Quebec in Montreal
Montreal
Canada
Email: cherkaoui.omar@uqam.ca
Susan Hares
Huawei
USA
Email: shares@ndzh.com
Weiming Wang
Zhejiang Gongshang University
18 Xuezheng Str., Xiasha University Town
Hangzhou 310018
P.R.China
Phone: +86-571-28877721
Email: wmwang@zjgsu.edu.cn
Haleplidis, et al. Expires October 27, 2013 [Page 96]
