Commit Graph

290 Commits

Author SHA1 Message Date
ludi
de99e42cc8 Cleanup of resource limit tests
Test: runtest frameworks-net
Bug: 65688605
Change-Id: Ice3ff2624b83c833a99559485c1e782d36c54ae3
2017-11-28 10:21:18 -08:00
Di Lu
baaa5670f5 Merge "Add test case for user quota management in IpSecService" 2017-11-15 20:12:38 +00:00
ludi
296907da6a Add test case for user quota management in IpSecService
Test: runtest frameworks-net
Bug: 65688605
Change-Id: I3210c4920d0ac1d09fecb56c25e392e2bcba641f
2017-11-13 14:14:11 -08:00
Hugo Benichi
d5c11bbb65 IP connectivity metrics: NetworkEvents have transports
Also removes netId field from inside NetworkEvent and stop populating
the network_id field of the NetworkEvent field, deprecating it.

Bug: 34901696
Test: runtest frameworks-net,
      manually looking at $ adb shell dumpsys connmetrics

Change-Id: I2c36860f976898883714f72f4d18e06da250c6a6
2017-11-13 14:15:51 +09:00
Hugo Benichi
fcccb3a36d Add L2~L4 information to packet wakeup logs and metrics
Example of $ adb shell dumpsys connmetrics list:
...
WakeupStats(wlan0, 21851s, total: 85, root: 0, system: 4, apps: 63, non-apps: 0, no uid: 18, l2 unicast/multicast/broadcast: 85/0/0, ethertype 0x800: 23, ethertype 0x86dd: 62, ipNxtHdr 6: 74, ipNxtHdr 17: 1, ipproto 58: 10)
...
WakeupEvent(06:55:54.094, wlan0, -1, eth=0x800, dstHw=10:e:7e:26:3f:c1, ipNxtHdr=6, srcIp=216.58.200.110, dstIp=100.112.108.29, srcPort=443, dstPort=46878)
WakeupEvent(06:57:14.379, wlan0, -1, eth=0x86dd, dstHw=10:e:7e:26:3f:c1, ipNxtHdr=58, srcIp=ff02::1, dstIp=fe80::fa00:4:fd00:1)
WakeupEvent(06:57:52.786, wlan0, 1000, eth=0x800, dstHw=10:e:7e:26:3f:c1, ipNxtHdr=6, srcIp=172.217.27.67, dstIp=100.112.108.29, srcPort=80, dstPort=49360)
WakeupEvent(06:58:02.919, wlan0, 10004, eth=0x86dd, dstHw=10:e:7e:26:3f:c1, ipNxtHdr=6, srcIp=2401:fa00:4:fd00:a585:13d1:6a23:4fb4, dstIp=2404:6800:4006:809::200a, srcPort=443, dstPort=46197)
WakeupEvent(06:58:05.586, wlan0, 10004, eth=0x86dd, dstHw=10:e:7e:26:3f:c1, ipNxtHdr=6, srcIp=2401:fa00:4:fd00:a585:13d1:6a23:4fb4, dstIp=2404:6800:4006:803::200a, srcPort=443, dstPort=46096)

Bug: 66869042
Test: runtest frameworks-net
      + manual testing by monitoring $ dumpsys connmetrics list
Change-Id: I03215c0c9fb7feda3e6ceb1b916f61f4ffb15344
2017-11-12 18:51:28 +09:00
Hugo Benichi
005a90b337 Merge "MacAddress follow-up: define the core of the class" 2017-11-09 12:22:17 +00:00
Hugo Benichi
d380d14c4d MacAddress follow-up: define the core of the class
Test: new unit test parts of $ runtest frameworks-net
Change-Id: I08c57d2d656802f7bdd7a93fde711a7e77247583
2017-11-09 16:36:45 +09:00
Benedict Wong
fcbbf2b939 Merge "Update documentation for AES-GCM-ESP keymat length" 2017-11-08 17:47:40 +00:00
Hugo Benichi
88ad29b907 Define MacAddress class
Test: new unit tests part of $ runtest frameworks-net
Change-Id: I5a6a868ff86e9bffdc551d4e2bb486b585525c30
2017-11-08 11:09:49 +09:00
Benedict Wong
720c1249bf Update documentation for AES-GCM-ESP keymat length
Added notes that keymat length must include 32 bits of salt.

Bug: 68672051
Test: Frameworks-net unit tests & IpSecManager CTS tests run
Change-Id: I0ae0c5be8a45b2374783b3bd1fa8bf930f15e687
2017-11-07 17:39:35 -08:00
Hugo Benichi
addecd1491 Merge "DefaultNetworkEvent metrics: rehaul" 2017-11-06 07:09:49 +00:00
Hugo Benichi
f123c85f29 DefaultNetworkEvent metrics: rehaul
This patch changes instrumentation of default networks and default
network events:
- stop logging events for default network transitions,
  but instead consistently log one event per continuous segment
  when one given network was the default, including logging an
  event for when there is no default network.
- keep a separate rolling buffer of DefaultNetworkEvent for
  dumpsys and bug reports.

These changes allow to simplify post aggregation of default network
event metrics by removing any need to do time series processing.
Instead, metrics and counters can be implemented withouth any ambiguity
by following the recipe:

% of x = sum(duration | x = true) / sum (all durations)

where x can be various conditions such as:
- the default network was validated
- the default network was WiFi
- the default network was IPv6
- there was no default network
- ...

Most importantly, this new logging scheme allows to measure much more
reliably:
- the % of the time that a device had Internet, in the sense that the
default network was validated.
- the time transitions between default networks, keyed by previous and
new transports/link layer, which allows to derive wakelock durations
and wakelock power costs from default network switches.

This patch also simplifies the dumpsys interface of the connmetrics
service and reduces the commands to three:
- "flush" for metrics upload.
- "proto" for printing buffered event in text proto format.
- "list" for listing all events and statistics.

Bug: 34901696
Bug: 65700460
Test: runtest frameworks-net
Change-Id: I0521f1681a60cca07ac3bfd5741d64ce44de4cdd
2017-11-06 09:04:02 +09:00
Jeff Sharkey
07e19362de Define NOT_ROAMING network capability.
The "roaming" state of a network really belongs on NetworkCapabilities
instead of being published through NetworkInfo.isRoaming().  One major
reason is to support developers creating NetworkRequests for a
non-roaming network.

Watch for any capability changes that network statistics are
interested in (either metered or roaming) and notify it to perform
an update pass; fixes bug where we previously only triggered on
roaming changes.

Fix bug in VPNs where metered/roaming capabilities of underlying
networks weren't being propagated; this was probably preventing
some jobs from running over unmetered networks, and causing other
jobs to run over roaming networks!  Also passes along link bandwidth
information from underlying networks, and propegates any changes
to underlying networks.

Fix race condition by reading prevNc inside lock.  Utility methods
correctly calculate min/max link bandwidth values.

Test: bit FrameworksNetTests:android.net.,com.android.server.net.,com.android.server.connectivity.,com.android.server.ConnectivityServiceTest
Bug: 68397798, 16207332
Change-Id: I3e1a6544c902bf3a79356b72d3616af1fd2b0f49
2017-11-01 19:05:42 -06:00
Manoj Boopathi Raj
626046b7f5 Merge "Fixed NullPointerException in IpSecService-Netd binder layer" 2017-10-27 17:32:56 +00:00
Manoj Boopathi Raj
03bb7d9304 Fixed NullPointerException in IpSecService-Netd binder layer
Replaced null with empty byte array in createTransportModeTransform
for null auth.getKey, crypt.getKey() and authCrypt.getKey()

Test: Ran CTS test
Bug: 68052730
Change-Id: I5110b1297b4bfbb5766e8ecfd3d64f8110b52945
2017-10-26 13:10:22 -07:00
Hugo Benichi
7e86f2e10f Remove Parcelable interface from DefaultNetworkEvent
This patch takes advantage of the direct DefaultNetworkMetrics interface
between ConnectivityService and IpConnectivityMetrics and removes the
Parcelable interface from DefaultNetworkEvent.

IpConnectivityMetrics, IpConnectivityEventBuilder and associated tests
are updated as necessary.

Bug: 34901696
Test: runtest frameworks-net
Change-Id: I59b6e04fc126051320d08a422cfbd4d27042123e
2017-10-25 12:40:13 +09:00
Hugo Benichi
cd8d58c405 Extract logging of default network events
This patch extracts the logging of DefaultNetworkEvent from inside
ConnectivityService and move it to a new DefaultNetworkMetrics class.

The DefaultNetworkMetrics is a singleton owned by the
IpConnectivityMetrics singleton implementing the metrics service for
core networking. ConnectivityService has access to this singleton via
LocalServices.

This class layout will allow to remove the Parcelable interface of
DefaultNetworkEvent and will instead let the IpConnectivityMetrics
service grab metrics from the DefaultNetworkMetrics directly.

Bug: 34901696
Test: runtest frameworks-net
Change-Id: I55694d89124272732aba114198776462372de18b
2017-10-25 12:36:29 +09:00
Benedict Wong
51de41dea2 Merge "Return a port from bindToPort() in IpSecService" 2017-10-24 16:31:21 +00:00
Benedict Wong
212777930f Return a port from bindToPort() in IpSecService
When binding to a random port, the port number was not being
returned, so the user is incorrectly receiving a port of zero.
Return the port number that was ultimately bound.

Bug: 67662580
Test: Ran CTS test on aosp_angler-eng
Change-Id: I22f4e5cdc83d43dc453788889990feb34e451bd3
2017-10-18 11:43:43 -07:00
Benedict Wong
edc1d285d7 Add support for AES-GCM-ESP as an IPSec algorithm
Allows native AES-GCM-ESP to be used as an IPSec transport/tunnel mode
algorithm with kernel support

Bug: 63589918
Test: IPsecService tests added, existing ones pass
Change-Id: Ie1a9a902be205f269aa37bf956198f2e5b177c21
2017-10-18 11:22:24 -07:00
Hugo Benichi
602996fe25 Fix ConnectivityServiceTest#testNetworkCallbackMaximum
Although commit 2a84d1cbcf fixed some flakyness issues in
testNetworkCallbackMaximum so that it became stable when ran on its own,
it introduced a new source of random failures because instead of
registering callbacks after callbacks until a limit was reached, commit
2a84d1cbcf changed the test logic to push the assertions right up to
the theoretical limit.

More precisely when registering and unregistering PendingIntents in a
loop, not introducing some delay for checking that previous
PendingIntents have been effectively unregistered can cause the test to
fail. This patch fixes this issue.

Bug: 32561414
Bug: 62918393
Test: runtest frameworks-net
      testNetworkCallbackMaximum now succeeds 100 in a row on sailfish

Change-Id: I086817a738ab99fd53ba76ca8faada6151f46472
2017-10-12 23:15:14 +09:00
Hugo Benichi
87d306b45f Import a few android.net unit tests into frameworks-net
Bug: 62918393
Test: runtest frameworks-net
Change-Id: I3c7c60bcfeffec5c5ec287810312349237a2868a
2017-10-12 15:55:22 +09:00
Hugo Benichi
1c0f4e27bc Migrate most of core networking tests to junit4
This patch is a batch of mechanical changes to test classes to migrate
away from AndroidTestCase and TestCase.

Bug: 62918393
Test: runtest frameworks-net
Change-Id: I74134609e511f22c4d9ecd65780e981f9ba7ae3f
2017-10-12 15:26:09 +09:00
Chalard Jean
8c827b7eb2 Add some useful helpers and constants.
Test: Pulled out of a client app ; the client app is behaving
Test: identically to how it was behaving before. Wrote unit
Test: tests in frameworks-net.

Change-Id: I397137748a95c65cee2e1e1b243a1a260e83a6f7
2017-10-06 13:38:46 +09:00
Nathan Harold
f69cb0a207 Split IpSecServiceTest to add IPv6 Tests
-Split IpSecServiceTest into parameterized
 and single tests.
-Add IPv6 parameters

Bug: 66954381
Test: this
Change-Id: Ib98c112560014f73bccc3d2842c31d297c7a07ef
2017-10-03 19:45:59 -07:00
Nathan Harold
4f4459d8c3 Add equals() for IpSecAlgorithm and IpSecConfig
Add equality testing methods to support tests
for parceling and un-parceling IpSecConfig.

Bug: 38397094
Test: runtest -x IpSecConfigTest.java
Change-Id: I31e318334d39ed6e9daf5ec8f3be7dcec75e12ad
2017-10-03 19:45:58 -07:00
Nathan Harold
bfbda18d48 Input Validation for IpSecService
All of the input to IpSecService over the Binder
interface needs to be validated both for sanity
and for safety.

-Sanity check all the parameters coming from binder.
-Added setters for IpSecConfig to decouple the test
 from the IpSecManager. This was needed because the
 input validation caused the tests to fail due to a
 null parameter that was previously un-tested.
-Added the mode flag to the IpSecConfig bundle this
 oversight was found during testing.
-Expose the getResourceId() methods for testing in
 UdpEncapsulationSocket, SecurityParameterIndex, and
 IpSecTransform classes.
-Remove the unneeded getIpSecConfig() from
 IpSecTransform: unneeded now that we can synthesize
 configs.

Bug: 38397094
Test: runtest frameworks-net
Change-Id: I5241fc7fbfa9816d54219acd8d81a9f7eef10dd4
2017-10-03 19:45:55 -07:00
Hugo Benichi
2a84d1cbcf ConnectivityServiceTest: fix flaky testNetworkRequestMaximum
Registered requests are not keyed by PendingIntents in
ConnectivityService, which means that unregistering a request with a
PendingIntent causes a linear search in all registered requests.

testNetworkRequestMaximum was registering too many PendingIntents
simultaneously, causing the unregistration loop to have n^2
complexity and to take a long time to take effect.

To make the unregistering loop less likely to trigger a timeout on
waitForIdle, this patch changes the test to not register MAX_REQUEST
number of PendingIntent, but instead mixes a small number of
PendingIntents with NetworkCallbacks to reach MAX_REQUEST number of
simultaneously registered requests.

When unregistering these requests, callbacks are unregistered first.

Bug: 32561414
Test: runtest frameworks-net
Change-Id: I48b882c884abe20b388190b7f28baee293446f37
2017-10-02 17:37:57 +09:00
Hugo Benichi
c30decbfe8 Merge "Fix NPE in NsdServiceTest" 2017-09-28 12:13:18 +00:00
Hugo Benichi
210ab83b77 Fix NPE in NsdServiceTest
Continuous test dashboards report that quit() can crash sometimes
due to mThread being null.

This patch adds a null guard in tearDown().

Bug: 32561414
Test: runtest frameworks-net
Change-Id: If66fb47e31e77d25b4741a786f12eb78f0b9102e
2017-09-28 15:22:13 +09:00
Lorenzo Colitti
3c0bf71eee Merge "Delete the legacy framework code for manipulating ND offload." 2017-09-27 10:46:36 +00:00
Treehugger Robot
21fcca6818 Merge "Declare support for Ethernet if the service is running." 2017-09-27 08:23:34 +00:00
Lorenzo Colitti
19d4cd99f5 Delete the legacy framework code for manipulating ND offload.
This only worked on broadcom devices, and was superseded in
M by a wifi HAL call made by IpManager.

Test: bullhead builds, boots
Change-Id: I711cae7dafe171c2c8b4e84a229adbcad27f3d14
2017-09-27 16:47:36 +09:00
Lorenzo Colitti
23e9afc702 Declare support for Ethernet if the service is running.
On some devices, support for TYPE_ETHERNET is not specified in
the networkAttributes config resource, even though the device is
capable of supporting Ethernet (e.g., via USB host adapters).
This leads to Ethernet working but various connectivity APIs
behaving as if it was not - for example, no CONNECTIVITY_ACTION
broadcasts will be issues when it connects or disconnects.

Ensure that ConnectivityService always treats Ethernet as
available if the service is running. Currently the service is
started if the device supports FEATURE_ETHERNET or
FEATURE_USB_HOST.

Bug: 37359230
Test: bullhead builds, boots
Test: ConnectivityServiceTest passes
Test: Ethernet is available even if removed from networkAttributes resource
Test: ConnectivityManagerTest CTS test passes
Change-Id: I58801bf4f0bbdc3ff6345ec6bfdc911ce045c8ab
2017-09-27 13:03:10 +09:00
Hugo Benichi
bf737c0a6b Extract RingBuffer class from NetdEventListenerService
This patch takes out the ring buffer array added for NFLOG wakeup packet
events logging and extract it into its own class for reuse. This new
RingBuffer class has the two minimal useful functions append() and
toArray().

Bug: 65164242
Bug: 65700460
Test: runtest frameworks-net, with new unit test
Change-Id: Ib94d79a93f4e99661b7d0fac67117b91d57af980
2017-09-26 14:14:16 +09:00
Erik Kline
0b01b0f191 Also support 464xlat on SUSPENDED networks
Test: as follows
    - built
    - flashed
    - booted
    - runtest frameworks-net passes
Bug: 65684232

Change-Id: I1b10aab01554b1f926ec7157dba78645fdaff90f
2017-09-21 18:06:29 +09:00
Charles He
85afa50569 Merge changes from topic "vpn-dialog"
* changes:
  Unbreak VPN unit tests.
  Add alert dialog when always-on VPN disconnects.
2017-09-19 07:56:44 +00:00
Charles He
ca55d7bda7 Unbreak VPN unit tests.
VpnTest was broken earlier due to a change to always-on VPN
notifications. This CL adds the corresponding mocks to the unit test to
fix it.

Bug: 36650087
Bug: 65439160
Test: runtest frameworks-net
Change-Id: Icff57c7e927c135d75a7d70ff347a579c5d45134
Merged-In: Icff57c7e927c135d75a7d70ff347a579c5d45134
(cherry picked from commit 5da89994b9)
2017-09-19 07:56:36 +00:00
Charles He
65e8bd2e04 Merge changes from topic "always-on-vpn"
* changes:
  Opt-out for always-on VPN: rename API.
  Opt-out for always-on VPN
2017-09-19 07:50:13 +00:00
Hugo Benichi
d4a29081c1 Wakeup packet events: addressing a few comments
This patch addresses a few post-submit comment for
commits f562ac34a51dc and 60c9f63b66921.

Bug: 34901696
Bug: 62179647
Test: runtest frameworks-net
Change-Id: I4abec57e0c6bc869dc57b5eb54582dd977b64c30
2017-09-19 14:07:47 +09:00
Hugo Benichi
e5090f2547 Merge changes I4719b4dc,I0308cdf4,I38db1bb7
* changes:
  IpManagerTest: fix flaky test
  Fix flaky NsdManagerTest
  Boostrap test for NetworkMonitor
2017-09-14 11:59:58 +00:00
Hugo Benichi
3c15d11b94 Connectivity metrics: add WakeupStats events
This patch defines a new WakeupStats event in ipconnectivity.proto and
populates these events from the NFLOG wakeup events stored in
NetdEventListenerService.

There is one WakeupStats object per known interface on which ingress
packets arrive and may wake the system up.

Example from $ adb shell dumpsys connmetrics list:

UPDATEME
...
WakeupStats(wlan0, total: 58, root: 0, system: 3, apps: 38, non-apps: 0, unrouted: 17, 6111s)
WakeupEvent(13:36:31.686, iface wlan0, uid -1)
WakeupEvent(13:38:50.846, iface wlan0, uid -1)
WakeupEvent(13:39:16.676, iface wlan0, uid 10065)
WakeupEvent(13:40:32.144, iface wlan0, uid 1000)
WakeupEvent(13:40:35.827, iface wlan0, uid 1000)
WakeupEvent(13:40:47.913, iface wlan0, uid 10004)
WakeupEvent(13:40:52.622, iface wlan0, uid 10014)
WakeupEvent(13:41:06.036, iface wlan0, uid 10004)
...

Bug: 34901696
Bug: 62179647
Test: runtest frameworks-net
Change-Id: Ie2676b20bfb411a1902f4942643df0c20e268d99
2017-09-14 13:29:56 +09:00
Hugo Benichi
ce2d1859b2 Fix flaky NsdManagerTest
Bad synchronization between the mock handler and the test assertions
were causing testDiscoverService() to sometime fails (1/50 ~ 1/100 repro
rate).

Bug: 32561414
Bug: 62918393
Test: runtest frameworks-net, NsdManager#testDiscoverService now passes
      1000 times without errors.
Change-Id: I0308cdf48fc6bdc2fc9b4e8f7d5241a1cf2ea443
2017-09-13 18:38:53 +09:00
Hugo Benichi
454d55d822 Boostrap test for NetworkMonitor
This will finally allow to write captive portal detection unit tests.

Bug: 32561414
Bug: 62918393
Test: runtest frameworks-net
Change-Id: I38db1bb79ae80a82b4199dc9cb1b56257e0cf222
2017-09-13 16:21:50 +09:00
Hugo Benichi
802e27811c Connectivity metrics: collect NFLOG wakeup events
This patch stores NFLOG packet wakeup events sent by Netd to the system
server into a ring buffer inside NetdEventListenerService. The content
of this buffer is accessible by $ dumpsys connmetrics or $ dumpsys
connmetrics list, and is added to bug reports.

The wakeup event buffer stores currently uid and timestamps.

Bug: 34901696
Bug: 62179647
Test: runtest frameworks-net, new unit tests
Change-Id: Ie8db6f8572b1a929a20398d8dc03e189bc488382
2017-09-12 10:02:13 +09:00
Charles He
a05761a80b Opt-out for always-on VPN: rename API.
Rename the opt-out flag in AndroidManifest to
SERVICE_META_DATA_SUPPORTS_ALWAYS_ON
as directed by the API Council.

Bug: 64331776
Bug: 36650087
Test: runtest --path java/com/android/server/connectivity/VpnTest.java
Change-Id: I24326fad7a89083a2409134640bda81ee0359d08
Merged-In: I24326fad7a89083a2409134640bda81ee0359d08
(cherry picked from commit d681363fd1)
2017-09-08 10:47:34 +01:00
Charles He
738a0a48ab Opt-out for always-on VPN
Always-on VPN is a feature introduced in N. Since then, all VPN apps
targeting N+ are assumed to support the feature, and the user or the DPC
can turn on / off always-on for any such VPN app. However, a few VPN
apps are not designed to support the always-on feature. Enabling
always-on for these apps will result in undefined behavior and confusing
"Always-on VPN disconnected" notification.

This feature provides a new manifest meta-data field through which a VPN
app can opt out of the always-on feature explicitly. This will stop the
always-on feature from being enabled for the app, both by the user and
by the DPC, and will clear its existing always-on state.

A @hide API is provided to check whether an app supports always-on VPN.
Documentation is updated to reflect the behavior change.

Bug: 36650087
Test: runtest --path java/com/android/server/connectivity/VpnTest.java
Test: cts-tradefed run cts --module CtsDevicePolicyManagerTestCases --test 'com.android.cts.devicepolicy.MixedDeviceOwnerTest#testAlwaysOnVpnUnsupportedPackage'
Test: cts-tradefed run cts --module CtsDevicePolicyManagerTestCases --test 'com.android.cts.devicepolicy.MixedDeviceOwnerTest#testAlwaysOnVpnUnsupportedPackageReplaced'
Test: cts-tradefed run cts --module CtsDevicePolicyManagerTestCases --test 'com.android.cts.devicepolicy.MixedProfileOwnerTest#testAlwaysOnVpnUnsupportedPackage'
Test: cts-tradefed run cts --module CtsDevicePolicyManagerTestCases --test 'com.android.cts.devicepolicy.MixedProfileOwnerTest#testAlwaysOnVpnUnsupportedPackageReplaced'
Test: cts-tradefed run cts --module CtsDevicePolicyManagerTestCases --test 'com.android.cts.devicepolicy.MixedManagedProfileOwnerTest#testAlwaysOnVpnUnsupportedPackage'
Test: cts-tradefed run cts --module CtsDevicePolicyManagerTestCases --test 'com.android.cts.devicepolicy.MixedManagedProfileOwnerTest#testAlwaysOnVpnUnsupportedPackageReplaced'

Change-Id: I477897a29175e3994d4ecf8ec546e26043c90f13
Merged-In: I477897a29175e3994d4ecf8ec546e26043c90f13
(cherry picked from commit 9369e61e2d)
2017-09-08 10:18:36 +01:00
Hugo Benichi
71449be2a7 IP connectivity metrics: fix tests after proto update
Update to ipconnectivity.proto in commit
6d2f506bfd788a3685292d404dc9d82a27357cfe broke the associated unit
tests (Change-Id: I4cf5b95956df721aecd63fddfb026a7266c190b9)

Bug: 34901696
Bug: 65439160
Test: runtest frameworks-net
Merged-In: I57a6bad8a9836b1c45690c4589b416786ce1dfa0

(cherry picked from commit 43b7474c08)

Change-Id: I98b23b2208bbd7d12237fcb000f3cf10c53d9e55
2017-09-07 22:17:18 +09:00
Rubin Xu
ffd77d8f29 Always add local subnet routes to the interface's routing table
For some networks such as mobile data connections, its LinkProperties
does not contain routes for the local subnet so no such route is added
to the interface's routing table. This can be problematic especially
if the device is in VPN lockdown mode where there exists high-priority
PROHIBIT routing rule which in turn blocks the network's default gateway
route from being added (next hop address hitting the prohibit rule).

We fix this by patching LinkProperties to always include direct connected routes
when they are received by ConnectivityService. This has the added advantage that
when apps get LinkProperties, they see the directly connected routes as well.

Bug: 63662962
Test: runtest frameworks-core -c android.net.LinkPropertiesTest
Test: runtest frameworks-services -c com.android.server.ConnectivityServiceTest
Test: Start with device with mobile data, set up ics-OpenVPN in always-on
      lockdown mode. Turn off mobile data then turn it back on, observe
      mobile data connectivity is restored and VPN successfully reconnects.
Change-Id: I35b614eebccfd22c4a5270f40256f9be1e25abfb
2017-09-07 10:50:20 +01:00
Hugo Benichi
4112ecb7a6 Merge "Nat464Xlat: correct racefree teardown" 2017-09-05 12:12:02 +00:00