utils: net: harden ensure_network_online with bounded retries + nmcli→wpa_supplicant fallback#204
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… nmcli→wpa_supplicant fallback This change hardens connectivity bring-up for flaky first-attempt failures: - Keep fast-path: return immediately if already online; sync clock when ok. - Ethernet first: link check, interface bring-up, DHCP, status triage (0/2/1). - Wi-Fi path adds bounded retries with cooldowns and cleanup between tries. - Prefer nmcli; on failure, fall back to wpa_supplicant + DHCP automatically. - Refresh udhcpc default.script if present to repair route/DNS, then recheck. - Preserve tri-state semantics: 0=online, 2=IP but no internet, 1=offline. Signed-off-by: Srikanth Muppandam <smuppand@qti.qualcomm.com>
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Flaky first-attempt network bring-ups (esp. Wi-Fi) caused intermittent failures in tests that fetch media or artifacts. This PR strengthens ensure_network_online in utils/functestlib.sh with bounded retries, better Ethernet/Wi-Fi sequencing, and an automatic fallback from nmcli to wpa_supplicant when needed—while preserving existing tri-state return semantics.
What changed
Ethernet first:
Wi-Fi with bounded retries:
udhcpc repair path (if ensure_udhcpc_script is available): refresh leases/routes/DNS, then re-check.
Return codes preserved: 0 online, 2 IP but no internet, 1 offline.
No new globals; logs are structured ([NET] …) and CI-friendly.
Deprecates the need for a separate wifi_connect_with_retry helper (can remain as a thin shim for legacy callers).