commit 8cc480c991d6f57c3f71b13d4a6a4484c929cb90
author Chenbo Feng <fengc@google.com> Wed Feb 28 22:57:21 2018 -0800
committer Chenbo Feng <fengc@google.com> Mon Mar 19 16:20:30 2018 -0700
tree 3aa1126e14ef89e7eb1e05e78536c09dcad11200
parent 607614b8ed076e71595ef1b03e1dc1c040482f00

Add a eBPF map to store iface name and index

Since the kernel bpf program can only get the iface index instead of
iface name, we need a seperate map to store the iface index and name
pair in userspace so the kernel program can know what iface each
received packet is and account against the correct name.

Test: run cts -m TrafficStatsTest
Bug: 30950746
Bug: 73137611
Change-Id: I6638dc4b03db6fd18b6b38b4524ec89e25a55bc0
(cherry picked from aosp commit 7e97405ea17a9134bb1b63c41d1d32de003d6bbf)