The names of the individual modules do not quite follow the pattern
that java_sdk_library uses so this temporarily sets the following:
    naming_scheme: "frameworks-modules"

That causes java_sdk_library to use a naming scheme that matches the
one used by the individual modules of this. It will be cleaned up
later.

Part of the purpose of the java_sdk_library is to hide the
implementation code and force users of the library to depend on stubs
for a well defined API. Ideally, it would allow access to the
implementation in those cases where it is safe, e.g. from within the
same APEX, or from tests for the implementation. Unfortunately, due to
limitations in the build it does not yet have enough information to
make that decision correctly which means that any code that needs to
compile against the implementation is broken which would prevent us
from converting the module to java_sdk_library.

However, the only way to provide the additional information to allow
the implementation to be correctly exposed is to convert the modules
to java_sdk_library; a cycle.

In order to break that cycle the java_sdk_library creates a special
<module>.impl target which is used directly by tests and any other code
that needs it. Once all the modules have been converted to a
java_sdk_library then we can resolve the limitations in the build and
remove the direct references to <module>.impl.

Test: m update-api
Bug: 155164730
Merged-In: If5c115f482751f9f4b5f047e9e401a18e36799ef
Merged-In: Id1c2e848430c49a2da7402244814cd084f5da77c
Change-Id: Id1c2e848430c49a2da7402244814cd084f5da77c

Extend the timeout to lower the EthernetTetheringTest flaky.

Besides, also explicitly exempt entitlement check in
EtetherntTetheringTest because it do not test tethering upstream
currently. Thus, the tests would not be interrupted by entitlement
check if test SIM is entitlement required.

Bug: 156713866
Test: TetheringCoverageTests, CtsTehteringTest

Change-Id: I45e8e8d737486def9d0de8943ec7f09ca0942a0b

Bug: 156866746
Test: atest TetheringTests, TetheringCoverageTests
Change-Id: I7c539f1f4a447b5913164b222601c6113c6fe645

If upstream is cellular, set the TTL in Router Advertisements to
"network-set TTL - 1" for carrier requirement. For other non-cellular
upstream, set TTL as "network-set TTL + 1" to preventing arbitrary
distinction between tethered and untethered traffic.

Bug: 154776299
Test: atest TetheringTests

Change-Id: I7f2696a642f96c6aafb5613b980bf5bcdd08bbda

AdoptShellPermissionIdentity can not pass permission check by
Settings#checkAndNoteWriteSettingsOperation. It would compare the caller
uid and its package name. See error below:
1. java.lang.SecurityException:
Specified package com.android.shell under uid 10239 but it is really 2000
2. java.lang.SecurityException:
uid 10245 does not have android.permission.UPDATE_APP_OPS_STATS.

Override the method and test if caller hold WRITE_SETTINGS directly.

Bug: 154869719
Test: TetheringTests, TetheringCoverageTests, NetworkStackNextTests,
NetworkStackCoverageTests

Change-Id: I2a60c4d66ef30028f9663159f85464ea815248e2

Bug: 154869719
Test: atest TetheringTests
Change-Id: I7beea3f011d930e433443ed62d772a3f8cce5d78

Bug: 156557122
Test: atest TetheringTests

Change-Id: Id9c0397306f3872fc23520d1354f338035a96dc9

Add the specific implementation of onNewPrefixRequest callback
on IpServer side, also refactor some common code.

Bug: 130741856
Test: atest TetheringTests
Change-Id: If2871bf899cb5890bbfee18063a194c92b6f474e

1. Move isTetheringSupport logic from TetheringService to Tethering.
2. Small readability improvement in TetheringTest. Also change
config_tether_upstream_automatic from false to true in TetheringTest.
So TetheringTests would default run automatic select upstream flow
instead of selecting by legacy perferred network type list.

Bug: 153609486
Test: atest TetheringTest
Change-Id: I5a82a6347f62d3a7031db5c56e8e0c8530dafd8f
Merged-In: I5a82a6347f62d3a7031db5c56e8e0c8530dafd8f

Merge the otherwise unused tethering-aidl-interfaces into
framework-tethering.

This is in preparation for converting to use java_sdk_library.

Bug: 155164730
Test: m droid
Change-Id: I4583539d11ba69320aa5a0dfcfee072c81affac2

Bug: 145490751
Test: atest TetheringTests

Change-Id: Ia402a6caaa0dfaa05d25a02101c515bbd884d33f

- Correct description and spelling in the code and xml files.
- Add a TODO for refactoring the IpServer constructor.
- Refine the if-statement for starting IP neighbor monitor.

Test: atest IpServerTest
Change-Id: If9c8bc6f785fa80575db56de4e223292e9807ace

* changes:
  Use device option to control BPF offload features
  Add tether BPF offload config to device config and resource

Modules contributing mainline modules (APK/APEX) should set
min_sdk_version as well as apex_available.

InProcessTethering is a part of com.android.tethering.inprocess,
therefore min_sdk_version is set.

Bug: 145796956
Bug: 150999716
Test: m
Change-Id: I655211e0b9aa4bd7cb3718b6f567f0aa1a0176a5

To exempt from entitlement check, caller need to hold TETHER_PRIVILEGED
permission.

Bug: 141256482
Test: atest TetheringTests

Change-Id: I2eb37f5e92f5f5150a7fb7c25b945e28704d27a0

Bug: 141256482
Test: atest TetheringTests
Change-Id: I0cf337625cee31a47879c59e9b18657ea7624eb4

Modules contributing mainline modules (APK/APEX) should set
min_sdk_version as well as apex_available.

For now setting min_sdk_version doesn't change build outputs.
But build-time checks will be added soon.

Bug: 145796956
Bug: 150999716
Test: m
Change-Id: Ifaecb49a47a1f43edea3ea06e1cf704a177d1044

Bug: 155604224
Test: build
Change-Id: I4147173b5f3668491ff9cb7f1f86715b036d6d4b
Merged-In: I4147173b5f3668491ff9cb7f1f86715b036d6d4b

Bug: 145490751
Test: atest TetheringTests
Change-Id: I01fc6969041711f7a15880144ee5eac591086ecd

If BPF offload device config is not enabled:
- Does not add/remove offload forwarding rules through disabling IP
  neighbor monitor.
- Does not apply the RA MTU reduction.

Bug: 149997301
Test: atest IpServerTest
Change-Id: I2d6f80f0229f580c4b16243a064e889a6c37f77a

The tether bpf offload can be enabled by resource config and
device config. The device config has higher priority and it
could override this config which is set by resource config.

Bug: 149997301
Test: -build, flash, boot
      -atest TetheringConfigurationTest
Change-Id: I9c26852d2c926786e141ece6da53df3801c049b2

Test: atest TetheringTests
Bug: 149467454

Change-Id: I0b07a0b520dedb479bf863fbfe898ae85b84b0f3

* changes:
  [SP18.5] Create offload controller poll interval to resource
  [SP18.4] Add unit test for polling network stats in OffloadController
  [SP18.3] Adapt TestableNetworkStatsProviderCbBinder

Test: m nothing
Bug: 133526962
Change-Id: I507f40866d04db5ed3361831e01eaa4dfaf20bed