Abtin Keshavarzian 422f673c7c [routing-manager] determine route preference from parent link quality (#9080) ...

This commit updates how `RoutePublisher` determines the published
route preference:
- Medium preference is used on a border router (BR) acting as a router
  or a BR acting as an end-device (ED) connected to a parent with
  link quality 3.
- An ED BR with lower link quality publishes its route with low
  preference.

For ED BRs, the preference is updated if the parent's link quality
changes. However, to avoid frequent preference changes due to link
variability, the following rules are used:
- If the link quality goes to 1 or 2, the route preference is
  immediately changed to low.
- On transition to link quality 3, we wait for 5 minutes before
  changing the preference to medium.
- If the ED BR switches parents, the link quality to the new parent is
  used to determine preference.

It also adds new APIs and related CLI commands to allow users to get
and manually set the published route preference. A new test script
`test-021-br-route-prf.py` is added to validate the selection of
route preference by BR.

This commit also adds a new mechanism to detect when the link quality
to the parent changes and signal it using a newly added `Notifier`
event.

2023-07-01 07:50:01 -07:00

..

apps

[build] remove autotools (#9027)

2023-06-28 08:54:23 -07:00

platforms

[routing-manager] determine route preference from parent link quality (#9080)

2023-07-01 07:50:01 -07:00

CMakeLists.txt

[cmake] initial implementation (#4112)

2019-11-26 00:53:35 +08:00