tree 3e91a58c2a9ca63eb3c2938e10d33b07104545b2
parent 784c6c3858d7956ba0b39def13fee9573f625823
author junyulai <junyulai@google.com> 1539954870 +0800
committer android-build-team Robot <android-build-team-robot@google.com> 1543986836 +0000

Fix negative uid stats caused by 464xlat adjust when eBPF is on.

When using xt_qtaguid to count per uid stats,
NetworkStatsService needs to adjust the 464xlat traffic since
iptables module would double count for ipv4 and ipv6 packet.
But for eBPF, the per uid stats is collected in a different
hook, so the adjustment on root uid would only be needed in tx
direction.

Bug: 112226716
Test: 1. Make ipv4 traffic in ipv6-only network and check data
         usage.
      2. Make ipv4 traffic in a client which connect to
         ipv6-only hotspot.
      3. runtest frameworks-net
      4. cts-tradefed run cts -m CtsNetTestCases -t \
                 android.net.cts.TrafficStatsTest
      5. cts-tradefed run cts -m CtsUsageStatsTestCases

Change-Id: Ic9a84f5446eddc943c255d5f3b89dad171f53cac
Merged-In: Ic9a84f5446eddc943c255d5f3b89dad171f53cac
(cherry picked from commit 431d07e60add78dce38e1d6d9ebd9e045da7beeb)
(cherry picked from commit 96971f770ca066316391e214828c941cbf68ef2e)