https://github.com/floodlight/indigo

Core OpenFlow agent and infrastructure modules
https://github.com/floodlight/indigo

Last synced: 3 months ago
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Core OpenFlow agent and infrastructure modules

• Host: GitHub
• URL: https://github.com/floodlight/indigo
• Owner: floodlight
• License: other
• Created: 2013-03-25T20:42:05.000Z (over 11 years ago)
• Default Branch: master
• Last Pushed: 2023-09-29T16:20:51.000Z (about 1 year ago)
• Last Synced: 2024-05-16T13:24:01.213Z (6 months ago)
• Language: C
• Size: 5.78 MB
• Stars: 62
• Watchers: 46
• Forks: 67
• Open Issues: 4
• Metadata Files:
  • Readme: README.async
  • License: LICENSE

Awesome Lists containing this project

• awesome-sdn - Indigo - Indigo is an open source project aimed at enabling support for OpenFlow on physical and hypervisor switches. (Uncategorized / Uncategorized)

README

        
async operation support in bundle

===================================

- one outstanding operation is supported

- only gentable operation support the async operation (not for flow table)

OF ConnectionManager:

========================

- bundle task will yield if there is an outstanding operation

- if the operation returns INDIGO_ERROR_PENDING, the bundle task will mark

  that operation as pending, and resume the task from that operation.

OF StateManager:

========================

- The gentable operations provide new getnable operation methods which

  gentable drivers should implement them if those operations are going to

  be asynchrous. (Look for add4(), modify4(), and del4() descriptions in

  indigo/of_state_manager.h)

- The OF StateManager only expects the INDIGO_ERROR_PENDING returned from the

  the new methods (add4(), modify4(), and del4()).

- If INDIGO_ERROR_PENDING is returned, the OF StateManager will mark the

  outstanding operation and return the same status to OF ConnectionManager.

  The OF StateManager will put the remaining work of that operation on hold.

- A resume function, indigo_core_gentable_entry_resume(),  must be called

  by the driver when the operation is completed (either successful or error).

- The StateManager will perform the remaining work for that operation. If

  the final status is successful, the entry will be added or deleted in the

  gentable state tracked by OFStateManager.

- The StateManager will release that operation from pending state so that

  OF ConnectionManager can resume the next operation.

Gentable Driver:

=======================

- The driver must implement the new *4 methods if it wants to support async

  operations.

- Return an INDIGO_ERROR_PENDING to OF StateManager if the operation is

  asynchronous. 

- Call the indigo_core_gentable_entry_resume() when the operation is completed.

- There is a "op_ctx" in the *4 methods. This op_ctx is the used by the

  OF StateManager in its resume function.