commit f9fbfffa951c49231e36f121150cbe1cbbac2357
author Chenbo Feng <fengc@google.com> Wed Apr 10 12:26:06 2019 -0700
committer Chenbo Feng <fengc@google.com> Fri Apr 12 16:37:57 2019 -0700
tree 72a752581baa447d41141b96f3efe7c0367fd3e7
parent 1dc863ba3253888af01c4a895e82d27113c44857

Let netd decide when to swap stats map

To protect stats map from overflow, netd need to know how many stats
entries exist in the current live stats map when tagging the socket. To
prevent racing against framework stats reading actions during tagging
sockets, let netd handle the map swap action instead.

Bug: 111441138
Test: android.app.usage.cts.NetworkUsageStatsTest
      android.net.cts.TrafficStatsTest

Change-Id: I1b63e50a67be07472dba32744c8598c1788d0b75
Merged-In: I1b63e50a67be07472dba32744c8598c1788d0b75
(cherry picked from commit 873ae1491d9ea8a6084ffe6816658cc4c27e22b1)