commit | 758f342a2921c53ab0f03357ef127756474fc340 | [log] [tgz] |
---|---|---|
author | Abtin Keshavarzian <abtink@google.com> | Fri Apr 15 10:08:42 2022 -0700 |
committer | GitHub <noreply@github.com> | Fri Apr 15 10:08:42 2022 -0700 |
tree | e139fe767e5b417ebdfc21d6f7bfab2acf0e7c6f | |
parent | a08e627419c0c7bfe4ce171ee0a98c96a83070cf [diff] |
[netdata] update srp/dns anycast entry seq num selection (#7488) This commit enhances the selection algorithm for the preferred entry when there are multiple "DNS/SRP Service Anycast" entries in the Thread Network Data. The sequence number (which is `uint8_t`) is used for selecting the preferred entry and the larger value is preferred. The seq numbers are compared using "serial number arithmetic" (RFC-1982) but if we have 3 or more entries the notion of a largest seq number may not be well-defined under the "serial number arithmetic" comparison (e.g., for `{10, 130, 250}` there is no largest seq number since `130 > 10`, `250 > 130` and `10 > 250`). In such a case the algorithm selects the entry with largest seq number in normal sense. This commit updates `FindPreferredDnsSrpAnycastInfo()` to implement the new algorithm. It also updates `test_network_data` unit test to add many test cases related to the selection algorithm.
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 1.2 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.
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