Use bpf map to read the interface stats
With the support of xt_bpf module, the more accurate per interface
network traffic stats can be obtained from ifaceStatsMap under
sys/fs/bpf/. Change the framework NetworkStatsService native
implementation to read from map instead of /proc/net/dev. The
corresponding test is added and refactor the old test to be compatible.
Test: ./libbpf_test
atest android.net.cts.TrafficStatsTest
Bug: 72111305
Change-Id: I2a6c6f82317bd9667c1b15e6b082fc9f153f6bf3
(cherry picked from aosp commit 33a4de15aa324c93503cf380bf2b172591a4fa03)
4 files changed