tree d0eed32c5779edd79b497f0706ab065454666403
parent b0940279c488079a5543f4f89480e99f1216e055
author Ryan Zuklie <rzuklie@google.com> 1698188592 -0700
committer Ryan Zuklie <rzuklie@google.com> 1698945845 -0700

Report sparse per-iface stats using atrace.

This reports the total bytes sent and received per interface using
atrace. The totals are taken from the interface counters, rather than
the ringbuffer, since the ring buffer can run out of space.

Interfaces are only reported for interfaces which have packets
sent on them as identified by Nettrace. This helps reduce the cost
significantly for idle periods and on devices with a large number of
interfaces accumulated in the iface stats maps.

Test: TreeHugger
Change-Id: I0e6a3b11de0d1e153b9f8ebb97c338f425381a9c