tree 4f62304b75620a741b55f13c35c9c9d5334253a3
parent bf996dd479d933b1e6be8fae50d1517229047674
author Chenbo Feng <fengc@google.com> 1511231026 -0800
committer Chenbo Feng <fengc@google.com> 1516692311 -0800

Add BPF support for NetworkStatsService

Add the native implementation for NetworkStatsService to read the
uidStatsMap and tagStatsMap to get the network traffic information.
Currently the implementation only try to get the data from bpf for a
reference but the final value returned is still from old xt_qtaguid
module. So the result will not be effected. The bpf implementation is
depending on libbpf inside netd.

Bug: 30950746
Test: CtsNetTestCases -t android.net.cts.TrafficStatsTest

Change-Id: Ia85e4d4d602f6bd536739d89085e6dc37ad82e15