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
- 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
Ignore-AOSP-First: Needs cherry-picks
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
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
Original-Change: https://android-review.googlesource.com/1753619
Merged-In: I53d6080f48707ff3c37fbfbef534284ba77a7432
Change-Id: I53d6080f48707ff3c37fbfbef534284ba77a7432
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
- 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>
Original-Change: https://android-review.googlesource.com/1751023
Merged-In: Ie9d6b3e39ef16813c4be3979900d226c8f3d656d
Change-Id: Ie9d6b3e39ef16813c4be3979900d226c8f3d656d
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
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
Ignore-AOSP-First: Need cherry-pick
Change-Id: I08bbdbcb8450b08e6208fa730137348550f9e3d2
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
Original-Change: https://android-review.googlesource.com/1727470
Merged-In: I38bdea3a026a78a6dc34b5200d43a75b3cd1ac0c
Change-Id: I38bdea3a026a78a6dc34b5200d43a75b3cd1ac0c
