oxidecomputer / oxidecomputer/dendrite

LPM V6 table size discrepancy with multicast build

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#269 0 comments 0 reactions 0 assignees View on GitHub

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

Description

Once #268 lands. There will be a discrepancy between multicast and non-multicast builds for the V6 LPM table sizes. In particular the IPV6_LPM_SIZE value in constants.p4. When we bring the multicast code out from behind a feature gate, we'll need to address this discrepancy. This conditional compilation was taken as an expedient path to fit #268 in 20 stages with the multicast build.

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Research direction

Review #268 and constants.p4, focusing on IPV6_LPM_SIZE and the separate multicast and non-multicast build paths. Determine how the sizes differ when multicast code is brought out from behind the feature gate, while keeping the multicast build within 20 stages. Done means both builds have the intended consistent V6 LPM table sizing.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
networking
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
42/100

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