tree 2dc167edd2c64184495588b6fc96d7c26517ee26
parent 2af1a7b846df1aa5e7e7a2b58be900eeb526387a
author Maciej Żenczykowski <maze@google.com> 1652447194 -0700
committer Cherrypicker Worker <android-build-cherrypicker-worker@google.com> 1653086711 +0000

BpfMap: cache bpf map file descriptors

We switch back to int from ParcelFileDescriptor,
and eliminate all calls to close().  Bpf Map FDs
now live till process exit.

Bug: 230880517
Test: TreeHugger, atest com.android.networkstack.tethering.BpfMapTest
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I89b6dc88ea56cb1e50695f8daf54ed79bce3fba2
(cherry picked from commit 8888c198daa8141988ee806adcf54b43e68b1076)
Merged-In: I89b6dc88ea56cb1e50695f8daf54ed79bce3fba2