77c8591f9d
root cause: getIfaceStats and getTotalStats is directly reading iface_stat_fmt or eBPF, not include tether stats. solution: add tether stats to getIfaceStats and getTotalStats. Clean cherry-pick of aosp/848934 Bug: 120039819 Test case1: 1. tether offload is enabled on phone, enable MHS on phone. 2. Use test app to check getMobileRxBytes->getIfaceStats 3. Download 10M file on MHS client 4. Use test app to check getMobileRxBytes->getIfaceStats again result: getMobileRxBytes increased around 10M Test case2: 1. tether offload is disabled on phone, enable MHS on phone. repeat above step 2~4 result: getMobileRxBytes increased around 10M Following CTS cases passed run cts -m CtsNetTestCases --test android.net.cts.TrafficStatsTest run cts -m CtsUsageStatsTestCases --test android.app.usage.cts.NetworkUsageStatsTest Change-Id: I3d94acb71c142ec38b750e58822881ff383341cc