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twamp: add timestamp diagnostic tool #3380

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twamp: add timestamp diagnostic tool #3380

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317b654
twamp: add twamp-debug diagnostic tool
snormore Mar 26, 2026
79e7566
twamp: add changelog entry for twamp-debug tool
snormore Mar 26, 2026
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2 changes: 2 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -7,6 +7,8 @@ All notable changes to this project will be documented in this file.
### Breaking

### Changes
- Tools
- Add `twamp-debug` diagnostic tool for testing kernel timestamping support on switches; sends real TWAMP probes to verify which SO_TIMESTAMPING modes (RX/TX software/hardware/sched) actually deliver timestamps, and reports RTT statistics comparing userspace vs kernel timestamp sources
- Smartcontract
- Fix multicast publisher/subscriber device counter divergence: `multicast_publishers_count` never decremented and `multicast_subscribers_count` over-decremented on user disconnect because the decrement logic checked `!publishers.is_empty()`, which is always false at delete time. Add a durable `tunnel_flags` field to the `User` struct with a `CreatedAsPublisher` bit, set at activation, and use it in the delete and closeaccount instructions.

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