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Johnathan Corgan
cc7f967128
Three deltas to the mesh-lab nat-lan suite for stall characterization: - FIPS_NAT_LAN_CPUSET env-var-driven CPU-pinning sidecar in run_nat_lan, mirroring the bloom-storm pattern. Pinning is needed because the mesh-lab compose-resource-limits.yml override is rekey-family service-name specific (rekey-* / rekey-accept-off-* / rekey-outbound-only-*), so it does not constrain the nat-lan containers. Default cpuset 0,1 mimics a GHA 2-core runner; empty disables the sidecar. - New compose-trace-nat.yml overlay that bumps RUST_LOG to trace on discovery::nostr, transport::udp, node::lifecycle, handlers::handshake, handlers::forwarding — the modules covering the cross-init / adoption / handshake path. Picked up by the nat-test.sh COMPOSE array via a new FIPS_NAT_EXTRA_COMPOSE colon-separated env-var hook. run_nat_lan sets this hook when FIPS_MESH_LAB_TRACE is non-empty; the README env-var section updated to reflect that FIPS_MESH_LAB_TRACE now applies to nat-lan in addition to the rekey-family. - parse_nat_lan extended with a per-node stall_signature emitting last-occurrence timestamps for eight event categories (startup, discovery, adoption, handshake_init, msg2_sent, cross_init_ignore_*, handshake_failed) plus derived last_meaningful_event_ts, last_event_category, silent_gap_s. Top-level stall_class binned as no_timeout / silent / localized / distributed / incomplete from the per-node categories. Aggregation phase consumes the per-rep signatures across a characterization run to classify stall mechanism. Wired support in nat-test.sh: FIPS_NAT_EXTRA_COMPOSE colon-separated list of repo-relative or absolute compose files layered onto the base via the COMPOSE array; FIPS_NAT_SKIP_FINAL_CLEANUP gates the success-path teardown so the mesh-lab harness can capture docker logs before tearing down (failure paths already returned without cleanup, leaving stall-state containers intact for capture). Smoke-tested on idle profile with TRACE on: 1 rep PASS, 32/36 TRACE lines per node, signature.json events all populated with the expected category timestamps.