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[BPF] Automatically adjust to actual max-entries when dumping conntra… #9704

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Description

Previously, the conntrack map size would not dynamically adjust to the default value when dumping the conntrack map, even if the global Felix configuration was modified or the BPFMapSizeConntrackPerCPU feature (which is supposed to scale the map size based on the number of CPU cores) was enabled.

So, let's do some things to address this issue ~

Related issues/PRs

fixes #9651

Todos

  • Tests
  • Documentation
  • Release note

Release Note

Adjust the default value to the value from the actual map when dumping the conntrack map.

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@ioworker0 ioworker0 requested a review from a team as a code owner January 13, 2025 09:28
@marvin-tigera marvin-tigera added this to the Calico v3.30.0 milestone Jan 13, 2025
@marvin-tigera marvin-tigera added release-note-required Change has user-facing impact (no matter how small) docs-pr-required Change is not yet documented labels Jan 13, 2025
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/sem-approve

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LGTM, some nits/tweaks, thanks

felix/cmd/calico-bpf/commands/conntrack.go Show resolved Hide resolved
felix/cmd/calico-bpf/commands/conntrack.go Outdated Show resolved Hide resolved
felix/cmd/calico-bpf/commands/conntrack.go Outdated Show resolved Hide resolved
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ioworker0 commented Jan 14, 2025

LGTM, some nits/tweaks, thanks

Thanks a lot for taking time to review!

…ck map

Let's automatically adjust the default value to match the actual max_entries
value retrieved from the conntrack map when dumping its entries.

Suggested-by: Tomas Hruby <[email protected]>
Signed-off-by: Mingzhe Yang <[email protected]>
Signed-off-by: Lance Yang <[email protected]>
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LGTM, some nits/tweaks, thanks

Done ~

@ioworker0 ioworker0 requested a review from tomastigera January 14, 2025 02:32
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[BPF] failed to dump the conntrack table
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