oxidecomputer / oxidecomputer/dendrite

Implement `clear` for the softnpu ASIC.

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Dominant language
Rust
Stars
20
Forks
3
Avg merge
3d 11h
Merged PRs (30d)
4

Description

The dpd daemon expects that it can clear ASIC table state at startup. However, the softnpu TableOps implementation does not implement this:

https://github.com/oxidecomputer/dendrite/blob/2daa552f898b637fc0d335869fe14bfded1e51ce/asic/src/softnpu/table.rs#L104-L107

This can lead to unpredictable behavior as noted in oxidecomputer/maghemite#545.

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Research direction

Start in asic/src/softnpu/table.rs at the TableOps implementation around lines 104–107 and determine how clear is expected to reset ASIC table state. Check how the dpd daemon invokes clearing at startup, then verify that the softnpu implementation leaves the tables clear and avoids the unpredictable behavior described in oxidecomputer/maghemite#545.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
networking
Issue type
Feature
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Stale
Clarity
Clearly specified
Newbie friendliness
58/100

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