[v1.13] bpf: lb: un-break terminating backends for service without backend #33276
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[ upstream commit 0de6f0f ] [ backporter's notes: add the ->count checks in slightly different locations, as we're missing a bunch of LB cleanup PRs. ] Continue to forward traffic for established connections, even when a service loses its last active backends. This needs a small adjustment in a BPF test that was relying on this behaviour. Fixes: 1835011 ("bpf: drop SVC traffic if no backend is available") Signed-off-by: Julian Wiedmann <jwi@isovalent.com>
[ upstream commit 7ece278 ] [ backporter's notes: open-code all the non-existent helpers ] Once a LB connection has been established, we expect to continue using its CT entry to obtain the backend. Even if the backend is in terminating state, and the service has lost all of its backends. Keeping this separate from the fix, in case we can't easily backport. Signed-off-by: Julian Wiedmann <jwi@isovalent.com>
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