Abtin Keshavarzian
221a9cbbb0
This commit introduces a new member variable `mRouterRoleAllowed` in the `Mle` class to cache the evaluation of whether the device is currently permitted to operate as a router. Previously, the `IsRouterEligible()` method evaluated several conditions (e.g., `IsFullThreadDevice()`, `mRouterEligible` config, and various fields in `SecurityPolicy`) every time it was called. Since this method is invoked frequently across different `Mle` operations, re-evaluating these conditions repeatedly was inefficient. The new `mRouterRoleAllowed` variable caches the final computed result. It is updated via the `UpdateRouterRoleAllowed()` method whenever any underlying input changes, such as: - `Mle` starting. - Configuration parameter updates (e.g., `SetRouterEligible()`). - Security policy changes from the `KeyManager`. This change centralizes the logic for handling role permission updates into a single location (`UpdateRouterRoleAllowed()`). By consolidating the actions taken when the allowed state changes, the codebase is cleaner and easier to maintain and update. It also provides a clearer conceptual distinction between the user's router configuration (`mRouterEligible`) and the effective state used by the device.
What is OpenThread?
OpenThread released by Google is... 
...an open-source implementation of the Thread networking protocol. Google Nest has released OpenThread to make the technology used in Nest products more broadly available to developers to accelerate the development of products for the connected home.
...OS and platform agnostic, with a narrow platform abstraction layer and a small memory footprint, making it highly portable. It supports both system-on-chip (SoC) and network co-processor (NCP) designs.
...a Thread Certified Component, implementing all features defined in the Thread 1.4.0 specification, including all Thread networking layers (IPv6, 6LoWPAN, IEEE 802.15.4 with MAC security, Mesh Link Establishment, Mesh Routing) and device roles, as well as Border Router support.
More information about Thread can be found at threadgroup.org. Thread is a registered trademark of the Thread Group, Inc.
Who supports OpenThread?
Getting started
All end-user documentation and guides are located at openthread.io. If you're looking to do things like...
- Learn more about OpenThread features and enhancements
- Use OpenThread in your products
- Learn how to build and configure a Thread network
- Port OpenThread to a new platform
- Build an application on top of OpenThread
- Certify a product using OpenThread
...then openthread.io is the place for you.
Note: For users in China, end-user documentation is available at openthread.google.cn.
If you're interested in contributing to OpenThread, read on.
Contributing
We would love for you to contribute to OpenThread and help make it even better than it is today! See our Contributing Guidelines for more information.
Contributors are required to abide by our Code of Conduct and Coding Conventions and Style Guide.
License
OpenThread is released under the BSD 3-Clause license. See the LICENSE file for more information.
Please only use the OpenThread name and marks when accurately referencing this software distribution. Do not use the marks in a way that suggests you are endorsed by or otherwise affiliated with Nest, Google, or The Thread Group.
Need help?
OpenThread support is available on GitHub:
- Bugs and feature requests — submit to the Issue Tracker
- Community Discussion - ask questions, share ideas, and engage with other community members