Send HostMetadata to BPF KubeProxy#11817

Merged

aaaaaaaalex merged 32 commits into

projectcalico:masterfrom

aaaaaaaalex:bpf-send-node-updates-to-kp

Feb 26, 2026

Commits on Feb 24, 2026

first draft hostmetadata_cache sends host metadata to BPF KP
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appease linter
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initialise updates chan
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throttle hostmetadata_cache updates
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additional logging in hostmetadata_cache
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dont return anything from sendAllUpdates
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makes the throttling interval configurable in hostmetadata_cache
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update HostMetadata without restarting Syncer
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rename a channel to be more descriptive
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adds testing for hostmetadatacache
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remove host-metadata-cache; throttle isnt as necessary because syncer no longer restarts on-update
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Make map before writing

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Copilot
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adds a nil check to concurrent proxy field checks
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batch updates until CompleteDeferredWork is called
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simplify tests for new UTs
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adjust test updates check
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clear pending updates after processing them, dont send an update if there are none
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fix shared map reference between kube-proxy and proxy
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kube proxy test used async checks unnecessarily
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fix dead code in mergeHostMetadata... func
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rewrite a comment that looked like a to-do
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comment in int_dataplane explaining why KP uses both the Manager iface, and callbacks to receive information.
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change a func comment after changing the func behaviour
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block KP at start-of-day until hostmetadata updates come in
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go doc format
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rename the non-blocking func that checks a channel can recv in KP
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allow a nil map to cause a panic (due to programming error)
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updates a doc string
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fix inaccurate doc string
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allow sending an empty update *once*, to allow the KP loop to start
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Commits on Feb 25, 2026

test KP sends an empty update once
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inSyncWithFelix -> inSyncWithIntDataplane
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Send HostMetadata to BPF KubeProxy#11817

Send HostMetadata to BPF KubeProxy#11817
aaaaaaaalex merged 32 commits into
projectcalico:masterfrom
aaaaaaaalex:bpf-send-node-updates-to-kp

Commits on Feb 24, 2026

first draft hostmetadata_cache sends host metadata to BPF KP

appease linter

initialise updates chan

throttle hostmetadata_cache updates

additional logging in hostmetadata_cache

dont return anything from sendAllUpdates

makes the throttling interval configurable in hostmetadata_cache

update HostMetadata without restarting Syncer

rename a channel to be more descriptive

adds testing for hostmetadatacache

remove host-metadata-cache; throttle isnt as necessary because syncer no longer restarts on-update

Make map before writing

adds a nil check to concurrent proxy field checks

batch updates until CompleteDeferredWork is called

simplify tests for new UTs

adjust test updates check

clear pending updates after processing them, dont send an update if there are none

fix shared map reference between kube-proxy and proxy

kube proxy test used async checks unnecessarily

fix dead code in mergeHostMetadata... func

rewrite a comment that looked like a to-do

comment in int_dataplane explaining why KP uses both the Manager iface, and callbacks to receive information.

change a func comment after changing the func behaviour

block KP at start-of-day until hostmetadata updates come in

go doc format

rename the non-blocking func that checks a channel can recv in KP

allow a nil map to cause a panic (due to programming error)

updates a doc string

fix inaccurate doc string

allow sending an empty update once, to allow the KP loop to start

Commits on Feb 25, 2026

test KP sends an empty update once

inSyncWithFelix -> inSyncWithIntDataplane