Deep Dive¶

How Open vSwitch is implemented and, where necessary, why it was implemented that way.

OVS¶

Design Decisions In Open vSwitch
- Asynchronous Messages
- OFPAT_ENQUEUE
- OFPT_FLOW_MOD
- OpenFlow 1.4 Bundles
- OFPT_PACKET_IN
- VLAN Matching
- Flow Cookies
- Multiple Table Support
- OFPTC_* Table Configuration
- IPv6
- In-Band Control
- Action Reproduction
- Suggestions
Open vSwitch Datapath Development Guide
- Flow Key Compatibility
- Flow Key Format
- Wildcarded Flow Key Format
- Unique Flow Identifiers
- Basic Rule for Evolving Flow Keys
- Handling Malformed Packets
- Other Rules
- Coding Rules
Fuzzing
- What is Fuzzing?
- OVS Fuzzing Infrastructure
- OVS Fuzzers
- Security Analysis of OVS Fuzzers
Integration Guide for Centralized Control
- Open_vSwitch table
- Bridge table
- Interface table
- HA for OVN DB servers using pacemaker
Porting Open vSwitch to New Software or Hardware
- Vocabulary
- Open vSwitch Architectural Overview
- Writing a netdev Provider
- Porting Strategies
- ofproto Providers
- Writing a dpif Provider
- Miscellaneous Notes
- Why OVS Does Not Support Hybrid Providers
- Questions
OpenFlow Support in Open vSwitch
- The Plan
- OpenFlow 1.1
- OpenFlow 1.2
- OpenFlow 1.3
- OpenFlow 1.4 & ONF Extensions for 1.3.X Pack1
- OpenFlow 1.4 only
- OpenFlow 1.5 & ONF Extensions for 1.3.X Pack2
- OpenFlow 1.5 only
- General
- How to contribute
Bonding
- Enabling and Disabling Members
- Bond Packet Input
- Bond Packet Output
- Bond Balance Modes
Open vSwitch Networking Namespaces on Linux
- How It Works
- Limitations
Scaling OVSDB Access With Relay
- What is OVSDB Relay?
- Why is this needed?
- 2-Tier Deployment
OVSDB Replication Implementation
- Terminology
- Design
- Setting Up The Replication
- Replication Process
- Runtime Management Commands
DPDK Support
- DPDK Bridges
- DPDK Physical Ports
- DPDK vHost User Ports
- DPDK Virtual Devices
- PMD Threads
- Quality of Service (QoS)
- Jumbo Frames
- DPDK Device Memory Models
OVS-on-Hyper-V Design
- Background Info
- Design
- Kernel Module (Datapath)
- Kernel-Userspace Interface
- Flow of a Packet
- Build/Deployment
- References
Language Bindings
- Official Bindings
- Third-Party Bindings
Debugging with Record/Replay
- Recording ovsdb-server events
- Replay of recorded session
Testing
- Built-in Tooling
- ViNePerf
Tracing packets inside Open vSwitch
- Packet Tracing
- Credits
Userspace Datapath - TSO
- Enabling TSO
C IDL Compound Indexes
- Introduction
- Typical Use Cases
- Implementation Design
- C IDL API
- Index Usage
Open vSwitch Extensions
- Introduction
- OVS vendor extension messages in OpenFlow and OVS
- Extended Match
- Error Message Extension
- Source files related to Open vSwitch extensions
Userspace Datapath - Checksum Offloading
- Design
- Interface (a.k.a. Netdev)
- Rules
Userspace Tx packet steering
- Thread mode
- Hash mode
- Usage
User Statically-Defined Tracing (USDT) probes
- Compiling with USDT probes enabled
- Listing available probes
- Using probes
- Scripts
- Available probes
- Adding your own probes
Visualizing flows with ovs-flowviz
- Installing ovs-flowviz
- Visualizing OpenFlow logical block
- Visualizing datapath flow trees

Design Decisions In Open vSwitch ›

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