The check is_system_uid should mirror the definition of core_uids in
UserHandle.isCore until it is available to be read from mainline code.
isUidNetworkingBlocked should also do the same.
Test: All existing tests should pass.
Test: atest CtsHostsideNetworkPolicyTests
Test: atest FrameworksNetTests
Bug: 348316140
Change-Id: Id5e01289b301a725b162ef249062e0f2806876dc
With this annotation, errorprone build will fail if callers don't check
sdk version before calling any methods in BpfNetMapsUtils.
Bug: 328732146
Test: TH
Change-Id: Ifa52dc1d2766f8d46dfdc4f6ca9dbb963406c084
Follow up CLs will update CS to generate blocked reason from bpf map
instead of asking NPMS.
However, one issue is NPMS set PENALTY_BOX for
BLOCKED_METERED_REASON_USER_RESTRICTED and
BLOCKED_METERED_REASON_ADMIN_DISABLED without telling the reason.
So, CS can not know the reason of PENALTY_BOX.
This CL add new firewall chain and match to distinguish reasons.
NPMS must call setUidFirewallRule with
FIREWALL_CHAIN_METERED_DENY_USER or FIREWALL_CHAIN_METERED_DENY_ADMIN
based on the reason so that CS can know the reason of restriction.
Bug: 332628891
Test: atest com.android.cts.net.HostsideRestrictBackgroundNetworkTests
Change-Id: Ia4ad4bdb345abc22c782630e828edfad2452db36
Update isUidNetworkingBlocked to return false for system uids regardless
of firewall chain status since this is an actual behavior
Bug: 328732146
Test: TH
Change-Id: Ic4760b927f51a1229e9af09c79b5261f85fe89d1
This CL also adds @RequiresApi(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
to NetworkStackBpfNetMaps
Bug: 328732146
Test: TH
Change-Id: Ifa4cffd046164405b8b49d2e2ee9f27240bec6fa
This is a preparation to add isUidNetworkingBlocked method to BpfNetMaps
without duplicating codes.
Bug: 328732146
Test: TH
Change-Id: I50a46931f6c80a1f4cfca5d9e78b2ab742a793f2
A new firewall chain is needed to configure background network
restrictions for apps.
This change only adds the API stubs and traffic controller constants to
make the chain work. Policy changes using this chain will follow in
the framework code.
Test: atest CtsNetTestCases:ConnectivityManagerTest
Test: atest ConnectivityServiceTest
NO_IFTTT=The Lint rule along with the relevant code in Common.h is
being deleted in aosp/2819759
Bug: 304347838
Change-Id: I33e2db6671431f7c576fc931d9f96e684fc1e78a
This is needed for data stall detection mechanism in NetworkStack
to get the information about whether the network is blocked for
a given uid and conditions. Because the API will be called
frequently from NetworkStack to resolve all status for all uids
on the device, the API cannot call into the service which
creates IPC. Instead, the API need to directly access bpf maps
in the user process to retrieve the status. In this case the
user process is the network stack, the access control is provided
by linux file permission and selinux.
Test: atest FrameworksNetTests:android.net.connectivity.android.net.BpfNetMapsReaderTest
Test: atest FrameworksNetTests:android.net.connectivity.android.net.ConnectivityManagerTest
NO_IFTTT=Refactor only change for firewall chains definitions
Bug: 297836825
Change-Id: Iaf983b71ec98cbfe5152dcfade8a3120f938f135
A helper class to *read* java BpfMaps. This is designed to
provide direct bpf access in the caller process through
ConnectivityManager APIs.
The change also removes any statical link to
net-utils-device-common-struct from service-connectivity.
This is because net-utils-device-common-struct is already
included in framework-connectivity. Including it again in
service-connectivity would create a r8 build fail by circular
dependency.
Test: atest FrameworksNetTests:android.net.connectivity.com.android.server.BpfNetMapsTest
Test: atest ConnectivityCoverageTests:android.net.connectivity.com.android.net.module.util.StructTest
Test: atest FrameworksNetTests:android.net.connectivity.android.net.BpfNetMapsReaderTest
Bug: 297836825
Change-Id: I7a6d2eb816d0dc7343167bddd672806b199f44fe
This is a no-op refactoring that splits constants and utility
methods into standalone classes which will be shared with
a bpf reader class in subsequent CLs.
NO_IFTTT=No-op refactoring
Test: atest FrameworksNetTests:android.net.connectivity.com.android.server.BpfNetMapsTest
Test: atest ConnectivityCoverageTests:android.net.connectivity.com.android.net.module.util.StructTest
Bug: 297836825
Change-Id: I6d7ea044e43180ae001573009a166be74ebe6a5d
Motomu Utsumi
commited 
Suprabh Shukla
commited 
Maciej Żenczykowski
commited 
Junyu Lai
commited