tree 1c51e0af08f8482f0489ce5b0dab391f79600274
parent 5864b59462ee43225a8ce2302f7711e90f171bcf
author Maciej Żenczykowski <maze@google.com> 1681276434 +0000
committer Maciej Żenczykowski <maze@google.com> 1681456681 +0000

bpf network stats - move double accounting tag!=0 out of bpf

Instead of also accounting tag!=0 traffic against tag==0 slot,
while the bpf code writes into the map, move this logic into
the userspace jni code which reads from the map.

Simplifies the bpf program making things easier on the
kernel's bpf verifier, and is better for performance,
since a per-packet fixup operation becomes a per-poll fixup.

Test: TreeHugger, atest libnetworkstats_test FrameworksNetTests
Bug: 276296921
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: Ic220a201781a1170bcffe327fe5664fc12b65dd9