updateNetworkInfo is called with the argument in a message,
which is initialized with `this` in NetworkAgentRegistry.
That means it's technically possible that CS calls
tearDownUnneededNetwork, calling nai.disconnect() and
queuing up a message to call this, but before it's done
the NA calls sendNetworkInfo with DISCONNECTED, which
never looks up the agent from the map. Throwing a
ServiceSpecificException and resulting in a System crash.
Bug: 196423147
Change-Id: Ia52f2b794f32c263200c14b8dc2eb6b184bff5ff
unregisterNetworkProvider is being called from binderDied()
and handleUnregisterNetworkProvider() at the same time. This results
in NoSuchElementException being thrown.
Check than noi can be removed from network offers before unregistering
death link.
Bug: 196423150
Change-Id: If5bd5f2894fa0509a89340efdc85180c54e72e0e
Upon changing the default SIM card, the radio will create a
new connection to the new subscription. If that subscription
works correctly, the stack will prefer it to the old one as
the new subscription will be marked with a Primary policy
flag it its score.
Normally, at this point the old network lingers to give apps
an opportunity to gracefully migrate their connections. But
with some radios, this may have a dramatic effect on the
performance of the new connection.
This patch introduces a flag so that devices with such radios
can be marked. In this case the stack will move to a degraded
mode and eschew the grace delay for apps and give them a hard
break instead, so that the new network can reach a good
performance immediately. Apps with existing connections will
suffer a worse experience.
If there is a request that can only be served by the old
connection, still keep it, as arguably the user still
expects their MMS be sent on the old connection, even if the
new connection doesn't work well until it's done.
Test: new test in this patch, and add relevant tests in both modes
also manually change the value of the flag and run
FrameworksNetTests and CtsNetTestCasesLatestSdk
Bug: 200226979
Change-Id: I4ace82f90e873bf06298cc689bb1d794ed5124bd
Suspended network should be considered as temporary shortage of
connectivity of a connected network. Thus, it should not be
excluded from network state snapshots and causes data usage to
stop accounting or iptables rules to be removed on the interface
of the suspended network.
This change also address the naming confusion of default networks
parameter of expectNotifyNetworkStatus.
Test: atest ConnectivityServiceTest#testGetAllNetworkStateSnapshots
Bug: 196079981
Change-Id: I8096356f9a472fb1c1246fbdf3fd5f981387fb1c
When the avoidBadWifi configuration is false and not overridden,
a WiFi network that was validated in the past but becomes
unvalidated needs to outscore a cell network that is validated.
This is happening correctly when the stack compares two networks.
However, when the stack compares an existing network to an offer
for a cellular network, the offer was automatically considered
not to yield. This would mean the stack would be requesting cell
out of the telephony factory, only for that network to lose to
WiFi and be discarded immediately, then recreated again etc.
When there is some other reason cell should be up (such as the
"mobile always on" setting being active), this would not be
visible because the cell network would have another reason not
to be torn down.
Have offers correctly account for the current value of the
configuration and setting. This has the ranking of the offer
lose against WiFi like the actual network loses, meaning the
offer is not needed.
This also requires updating the offers whenever the value of
the setting changes.
Test: new test for this, also ConnectivityServiceTest
Bug: 195441367
Change-Id: I4fe5de98bc15bcf9bbbe25c6c7c8a7ba382f8db7
The check intends to do the bit & operation. The net cap value
should be shifted against the original capabilities.
Also fix the typo in the method name.
Bug: 191918212
Test: atest FrameworksNetTests
Change-Id: I98396b2538f36fe8b29d27a544a2dfb3060bc9c5
The crash occurs when some app has more than half its limit
in requests that will need to be moved to some other default
network upon changing the preferences.
This will send the requests for this app over the limit
temporarily when creating new requests for the reevaluated
ones.
While ConnectivityService has a provision for making a
transaction-like addition/removal of requests that is meant
to avoid exactly this kind of crash with the transact()
method on PerUidCounter, the code only transacts on
mSystemNetworkRequestCounter. But these requests are counted
in the mNetworkRequestCounters, which is not part of the
transaction, causing the crash anyway.
To avoid the problem, this patch allows the request counters
to go over the max if and only if the system server is
updating the request counts for a UID other than its own.
This should allow only the case where ConnectivityService is
moving the requests over to the new per-uid default, while
keeping the exception when registering from an app (then the
calling UID is not the system server), or when the system
server registers its own requests (then the UID inside the
request is that of the system server).
A much better solution than this patch would be to completely
eliminate the transact() method by somehow unregistering the
old ones before creating the new ones.
However this would be a much bigger and difficult patch than
this, and much more dangerous, because callers depend on the
list of requests to find out the old requests to remove, so
they have to be created first.
Another possible clean solution would be to count the
requests not in the NRI constructor, but later. This would be
more error-prone though because it would be very easy to
create an NRI without counting it.
Bug: 192470012
Test: ConnectivityServiceTest. Improve tests so they catch
this case.
Change-Id: Ia482e6fbf2bf300ce6cbaca72810d394ed201b98
The flaky callstack shows that it hits the exception in the
initialization of HashSet. The mNetworkRequests is accessed in
the ConnectivityService handler thread except dump(). The
ConcurrentModificationException should not happen in the other
flow. Thus, retry to get the current requests when the dump()
hits the ConcurrentModificationException to prevent flaky test.
Bug: 188373832
Test: atest ConnectivityServiceTest#testDumpDoesNotCrash\
--iteration 100
Change-Id: I9625919faf947c9488764b92093ed8105271c927
The scenario is as follows : an app registers a network callback,
then unregisters it and dies immediately after. In this scenario,
the system server will receive a notification of the binder death
and enqueue a call to handleRemoveNetworkRequest. If the callback
unregister message has been process first, this call would result
in unlinkToDeath being called twice on the same Binder, crashing.
This patch fixes the problem by using handleReleaseNetworkRequest
instead of Remove, which looks up the NRI in a map on the handler
thread before calling Remove, returning without doing anything if
the NRI has already been removed.
Test: ConnectivityServiceTest
Test: New test for this
Bug: 194394697
Change-Id: I82a28c37450146838410bf5a059aac295a985fca
After moving all netlink-client stuff to frameworks/libs/net/common
and build it as an individual library, deprecate the netlink-client
lib and use net-utils-device-common-netlink instead.
Due to that the package name of netlink lib has changed, also update the
package name used in Tethering and ConnectivityService module.
Bug: 192535368
Test: atest TetheringTests TetheringIntegrationTests
Change-Id: Ic2078caf67a640836d98c5a2e4ca89939adcb896
ConnectivityService doesn't use it, and the NetworkAgent API
never set it. This case does not happen in pratice, so remove
the check.
Bug: 192611346
Test: atest FrameworksNetTests
Change-Id: I1f114c9b65050527378ee73bc86e4cda8868bca9
Currently netd supports only the default value for VPN but CS
send priorty value 1 to netd. It will break the default routing
for VPN. Thus, update network preference priority value to 0 for
VPN.
Bug: 193245476
Test: atest CtsHostsideNetworkTests:HostsideVpnTests
Change-Id: I197cb358e8e30355fbf675e4c623abebe7abdb7f
This CL updates ConnectivityService to do null checks on received
parameters when registering and unregistering ConnectivityDiagnostics
callbacks (and also when simulating Data Stalls).
Bug: 181583568
Test: atest ConnectivityServiceTest ConnectivityDiagnosticsManagerTest
Change-Id: I7f297f10bf8d379a5d33ca5e11ca1e12132ba3a5
When NetworkRequestInfo#binderDied is called in ConnectivityService,
only pass the NRI to handleRemoveNetworkRequest. This is to prevent a
potential crash when unlinkDeathRecipient is called twice for the same
NRI.
Also, as a cleanup, don't iterate mRequests in the log message on binderDied.
As per the bug, the chain of events leading to a potential crash are:
- `Connectivity.NetworkRequestInfo#binderDied()` is called for an NRI
tracking multiple `NetworkRequest` items. This can happen for a TRACK_DEFAULT
request filed by a UID on a different preference than the default, which
copies the request list.
- This in turn triggers multiple `EVENT_RELEASE_NETWORK_REQUEST` events
for the same NRI, one for reach `NetworkRequest` tracked.
- When handling `EVENT_RELEASE_NETWORK_REQUEST`, each `NetworkRequest`
that is passed in will then be used to look up the parent NRI that originally
sent it to be released.
- Therefore if an NRI was tracking three requests, it would trigger three
release network events, then each request would be used to look up the
same NRI again when handling said release event.
- Finally, `ConnectivityService.NetworkRequestInfo#unlinkDeathRecipient` is
called for the NRI in question. Using the scenario above, that means we could
call `unlinkDeathRecipient` multiple times for the same NRI if it was tracking
multiple network requests causing the associated crash.
- If `unlinkDeathRecipient` is called more than once for the same NRI, it will
cause the crash listed in this bug.
- The fix is to only call handleRemoveNetworkRequest for the NRI once. This
works since when removing the NRI, we iterate over all of its requests to
remove them. By only calling handleRemoveNetworkRequest once, it's ensured
`unlinkDeathRecipient` for this NRI as part of
`Connectivity.NetworkRequestInfo#binderDied()` is only called once and not
potentially multiple times.
Bug: 185541983
Test: atest FrameworksNetTests
Change-Id: I2a2ad4ec6d415423182a1856a898779203658f8b
- Each network preference has been assigned a priority value so
that netd can know which uid range rule has higher priority. So
remove the restriction that all network preferences are
exclusive.
- Add priority check when getting request for uid.
Bug: 171872461
Test: atest FrameworksNetTests
(cherry-pick from ag/14731887)
Merged-In: I6912db753c8b4a194aa7af92b01ca6dcfec10d8b
Change-Id: I6912db753c8b4a194aa7af92b01ca6dcfec10d8b
Replace network[Add|Remove]UidRanges to
network[Add|Remove]UidRangesParcel. The new methods are passing
NativeUidRangeConfig which contains priority value for each uid
range rules.
Bug: 171872461
Test: atest FrameworksNetTests
Test: atest HostsideVpnTests
(cherry-pick from ag/14911836)
Merged-In: I08bbdbcb8450b08e6208fa730137348550f9e3d2
Change-Id: I08bbdbcb8450b08e6208fa730137348550f9e3d2
paulhuauthored and Paul Hucommited 2021-07-07 03:06:32 +00:00
Certain network types, like the VCN, have underlying
networks for the purpose of data usage, but do not want to
propagate the underlying network capabilities.
Allow these networks to set underlying networks, but continue
not to propagate the capabilities.
Bug: 190620024
Test: new unit test
Change-Id: I53d6080f48707ff3c37fbfbef534284ba77a7432
Lorenzo Colitticommited 2021-07-02 18:48:25 +09:00
This CL updates ConnectivityDiagnostics to report
NETWORK_VALIDATION_RESULT_SKIPPED when the platform does not validate
the reported Network. This CL also updates the behavior for
ConnectivityManager#reportNetworkConnectivity, such that it will always
generate a ConnectivityReport on the reported network. If the reported
connectivity does not match the known connectivity of this network, the
network is revalidated and a report is generated. Otherwise,
revalidation is not performed and the cached ConnectivityReport is sent
instead.
This CL also updates ConnDiags behavior for calls to
ConnectivityManager#reportNetworkConnectivity. Specifically, ConnDiags
callbacks are only notified for these calls if:
a) the call causes the Network to be re-validated, or
b) the callback registrant was the caller of
#reportNetworkConnectivity().
For b), the caller is always guaranteed to receive a ConnectivityReport
(a fresh report if the Network is re-validated, else the cached report).
Bug: 162407730
Test: atest FrameworksNetTests ConnectivityDiagnosticsManagerTest
Change-Id: I78b78919d5b0f09348dfdd5fdb37418b8c7f861f
- If Mobile data always on is OFF, mobile data preferred uids
feature does not work.
- We need to request mobile data when MDO list is not empty.
Bug: 171872461
Test: atest FrameworksNetTests
Test: atest CtsNetTestCases
Signed-off-by: Ansik <ansik.shin@samsung.com>
Change-Id: Ie9d6b3e39ef16813c4be3979900d226c8f3d656d
Ansikauthored and paulhucommited 2021-06-30 14:22:34 +00:00
Currently, ConnectivityService uses EVENT_REGISTER_NETWORK_LISTENER
to dispatch registering network callback with pending intent, this
is wrong since the code flow will not check if the pending intent
is duplicated. Thus, the registration will be duplicated if the
caller uses the same pending intent and register multiple times.
This change fixes the logic by using
EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT instead of
EVENT_REGISTER_NETWORK_LISTENER when dispatching register network
callback with pending intent.
Test: atest android.net.cts.ConnectivityManagerTest#testRegisterNetworkRequest_identicalPendingIntents
Test: atest android.net.cts.ConnectivityManagerTest#testRegisterNetworkCallback_identicalPendingIntents
Test: atest ConnectivityServiceTest#testNetworkCallbackMaximum
Test: 1. Use test app to file callback with same PendingIntent
2. Check dumpsys output
Bug: 189868426
Change-Id: I38bdea3a026a78a6dc34b5200d43a75b3cd1ac0c
WeiZhangauthored and Junyu Laicommited 2021-06-30 12:05:43 +00:00
Currently, to prevent from network connect-teardown-loops that
caused by inaccurate reports, e.g. the provider always provides
a better network than the offer, the NetworkOffer is considered
needed if its provider is currently serving the request. This
is because there is no accurate way to know whether the offer is
corresponding to the network that is currently serving the
request.
However, if the offer cannot even satisfies the request, consider
the offer is needed does not make any sense. Since it can
never be the one that currently serving the request, nor be
the one that might beat current satisfier.
Test: android.net.NetworkProviderTest
Bug: 189074532
Change-Id: Ie3ea59f980c3767782b8e6b03e401c02f664f9bd
In S ConnectivityService was changed to use getActiveRequest() to fill
EXTRA_NETWORK_REQUEST, but there is no active request in the case of
listens.
When getActiveRequest() is missing, use the first mRequest instead. This
should match previous behavior.
Bug: 191713869
Test: atest android.net.cts.ConnectivityManagerTest
Change-Id: Id7343a4cc020aba16b7979b16334721c56b2839c
ConnectivityManager.setAvoidUnvalidated only works if the
config_networkAvoidBadWifi configuration is set to 0 and the
NETWORK_AVOID_BAD_WIFI setting is unset. There is no easy way
for a testing app to temporary set a test value to verify the
behavior of the API. Thus, add a mechanism to allow test app
to set a period of time to temporary unstrict the resource
configuration, i.e. Temporary simulate config_networkAvoidBadWifi
configured to 0.
Bug: 186061922
Test: atest CtsNetTestCases FrameworksNetTests
Change-Id: If772078c61a9b12926f104d5dfc9c9071e844732
To allow unit tests to run without platform certificates, remove
signature permission usage in ConnectivityServiceTest.
This mocks permission checks done in ConnectivityService for which the
test assumed that the permission was held, and mocks calls to
BatteryStatsManager. Calls to ActivityManagerService (through
PendingIntent) are done with shell permissions as the test uses real
PendingIntent mechanics.
Bug: 187935317
Test: atest FrameworksNetTests
Change-Id: If309d653ac2e9bbcf1b94bcee6336367289df359
- Add default network priority to NetworkRequestInfo.
- The default network priority value is used when issue uid
ranges rules to netd. Netd will use the priority value and uid
ranges to generate corresponding ip rules specific to the given
network preference.
Bug: 171872461
Test: atest FrameworksNetTests
Merged-In: I0ea71b348492aeb4784d487bed4cfd5d387426ba
Change-Id: I0ea71b348492aeb4784d487bed4cfd5d387426ba
- Add more tests for mobile data preferred uids.
- Also address leftover comments on implementation commit.
Bug: 171872461
Test: atest FrameworksNetTests
Merged-In: I63f65bffc1b8883ddfd774222e26e629d7ea1f94
Change-Id: I63f65bffc1b8883ddfd774222e26e629d7ea1f94
Updates to ConnectivityService so that the set OEM network preference
per app APIs can be tested via CTS.
Bug: 176496580
Bug: 176494815
Test: atest FrameworksNetTests
atest FrameworksNetIntegrationTests
atest CtsNetTestCasesLatestSdk
Change-Id: I5a47dcece31749293f080af060218d827082eb67
Use shell permissions to obtain CREATE_USERS to call
ActivityManager.getCurrentUser in ConnectivityServiceTest.
This is necessary to allow the tests to run in coverage tests without
the platform certificate.
Bug: 187935317
Test: atest FrameworksNetTests:ConnectivityServiceTest
Change-Id: I5a56ffab4820d351dcdb132046698cd0d3b8bdb1
* changes:
Add CTS for NetworkAgentConfig#setSubscriberId
Add CTS for getAllNetworkStateSnapshots
Check NETWORK_SETTINGS permission for getAllNetworkStateSnapshots
Junyu Laiauthored and Gerrit Code Reviewcommited 2021-06-09 08:09:41 +00:00
Chalard Jean
authored and
Gerrit Code Review
commited 
Tyler Wear
commited 
Junyu Lai
authored and
Benedict Wong
authored and
Chiachang Wang
commited 
Xiao Ma
authored and
paulhu
commited 
James Mattis
authored and
Treehugger Robot
authored and
Lorenzo Colitti
commited 
Cody Kesting
commited 
Ansik
authored and
WeiZhang
authored and
Remi NGUYEN VAN
commited 
Lucas Lin
authored and