Users outside system_server now explicitly communicate their
lifecycle, which keeps a strong-reference chain to any fully loaded
NetworkStatsCollection histories.
Bug: 6236498
Change-Id: I8e22739b6e89a626b676967a736d7117fd000778
Add networkId field to NetworkIdentity to identify Wi-Fi networks by
SSID. Add support for policies without usage cycles.
Only apply mobile policies when SIM state is ready, which is cleaner
than just checking for airplane mode. Also avoids creating no-op
default policies when subscriberId is null.
Bug: 3001465, 3291052
Change-Id: I1f8aaa49a5db306df022c402ea7f3f5d4bc0cfc7
To support multi-user, store network policy per-appId and expand to
apply rules to all UserInfo on device.
Bug: 6140462
Change-Id: Ic0866b4d41c8c60cc1c0a597f0de927b92b65b1e
Subtype controls (3G-vs-4G) aren't exposed in the UI, so tracking
data with that granularity creates unnecessary overhead. For example,
some GSM networks can regularly flap between two subtypes.
Bug: 6118868
Change-Id: Id098891dba52336d00d0f96632a7924e228b4713
Instead of cycle reset at midnight UTC, use midnight of timezone
active when user last set cycle reset date. Tests to verify, and
also to test leap year behavior.
Bug: 5938567
Change-Id: Ie06f7f0fa242d23110f9586a3f4f7037af87b31b
When changing global restrict background status, send connectivity
change broadcast, since it radically changes DISCONNECTED/BLOCKED
status system-wide.
Also reduce verbose stats logging.
Bug: 5854466
Change-Id: I3b612c520f50cc3000a3a569b7e0ab5f691cc2bd
Introduce second snooze timestamp to support dismissal of data usage
warning notification. Also explicitly set notification "when" to
avoid fighting with other notifications, such as ongoing downloads.
Bug: 5443756, 5262414
Change-Id: I03342c25b0410b1b2db84de9a40884f04cb1d8ae
When NDC delivers limitReached() event, NMS re-arms the alert, which
makes another call back to NDC. If NDC already started processing
another call, this causes deadlock.
Fix this by re-arming on a handler thread.
Bug: 5879848
Change-Id: I46fa78fe1f1122c5f31dd6020483e5ae89a9f39d
Split existing network stats into two separate classes: a recorder
which generates historical data based on periodic counter snapshots,
and a collection of historical data with persistance logic.
Recorder keeps a pending history in memory until outstanding data
crosses a specific threshold. Persisting is handled through a given
FileRotator. This pattern significantly reduces disk churn and
memory overhead. Separate UID data from UID tag data, enabling a
shorter rotation cycle. Migrate existing stats into new structure.
Remove "xt" stats until iptables hooks are ready. Avoid consuming
Entry values when recording into NetworkStatsHistory. Assign
operation counts to default route interface.
Introduce "Rewriter" interface in FileRotator with methods to enable
rewriteAll(). Introduce IndentingPrintWriter to handle indenting in
dump() methods.
Bug: 5386531
Change-Id: Ibe086230a17999a197206ca62d45f266225fdff1
Report non-monotonic NetworkStats through an observer interface
instead of throwing, since those events are still recoverable.
Change-Id: Ic0749f4634b0ac05dbe90e95ca490957ec8b2f23
This separates the definition of "metered network" and "network with
limit." For now, all mobile networks are considered metered.
Bug: 5571454
Change-Id: I394cd385bd33add75e53bfc9cf2fefd06a00208a
Move NTP updates outside locks to avoid blocking ShutdownThread. Add
logging around trim events that remove substantial history. Include
history start in sample events.
Bug: 5627247, 5584564
Change-Id: If9bbd93842c710efcdec94e68da87e9e42a5f961
Instead of trusting NTP time alone, use the most-conservative of
system clock and NTP.
Bug: 5584564
Change-Id: I5dd87fc009959b1cf0a7d660e385a0b1a8be238b
When encountering non-monotonic stats rows, recover remaining data by
clamping to 0. In particular, this avoids edge-case where persisting
threshold checks would never trigger. Also recover when tethering
snapshots are missing.
Bug: 5600785, 5433871, 5600678
Change-Id: I1871954ce3955cc4ac8846f9841bae0066176ffe
For devices with both CDMA and GSM stack, ConnectivityService only
connects with the GSM variant. Making this flag static communicates
the policy state between all DCT.
Bug: 5586935
Change-Id: Iff0384027303470dd382d5173558d2d091ce4bf6
Moved away from BufferedReader, which only reads the first 8KB of
some proc files because it aggresively fills its buffer. Optimized
proc parsing, now double the speed. Tests to cover.
Log when NetworkStats counters roll backwards when subtracting, and
optimizations around findIndex(). When system removes UID, also
remove from last stats snapshot to avoid xt counters from rolling
backwards.
Bug: 5472949, 5458380
Change-Id: I07c08fe5233156fac2b84450f6291868bf9bfaf2
When a process changes foreground status or dies, NetworkPolicy
updates its internal state with a lock held. In cases where there
is contention, this can block the AMS handler and prevent other
events, such as broadcasts, from being dispatched.
This change moves the incoming AMS events to an existing internal
NetworkPolicy handler thread, where they can execute without
blocking AMS.
Bug: 5497544
Change-Id: Ie0c620a620fd9f0f4eb02af510bd819efa4deb6a
Consider a network over-limit when it's measured usage is within a
handful of MTU's, since kernel completely drops packets that trigger
limit alert.
Update notification drawables.
Bug: 5433359, 5224629
Change-Id: I10b19cc34c34b47775904229829a25208cd85d25
Offer parameters to pick out specific list of packages, and to change
duration and total data.
Bug: 5416742
Change-Id: I6970a5e76f3198ef23a400c079037212b000ca6b
Begin tracking xtables summary of data usage to compare with values
reported from /proc/net/dev. Roll tethering directly into UID stats
to trigger UID stats persisting when crossing threshold.
Include xtables summary and authoritative time in samples.
Bug: 5373561, 5397882, 5381980
Change-Id: Ib7945522caadfbe0864fdf391582dc820f4f371e
Watch for changes to telephony network subtype, and update iface
mapping to persist stats under correct type. Update network stats
before removing tethering NAT rules.
Skip recording that would create empty historical buckets. Query UID
stats before iface stats to always skew positive when counters are
actively rolling forward.
Bug: 5360042, 5359860, 5335674, 5334448
Change-Id: I8aa37b568e8ffb70647218aa1aff5195d3e44d5a
When sampling network stats, always use atomic buckets instead of
interpolating. Always poll iface and UID together so we distribute
into buckets equally. Move stale bucket trimming to just before
writing stats.
Bug: 5321340
Change-Id: I78a2226778a79c875f3668336e39ea24a7b4d5c4
Use new "gettetherstats" netd command to retrieve statistics for
active tethering connections. Keep tethering poll events separate
from UID poll, even though they end up same historical structures.
Bug: 5244846
Change-Id: Ia0c5165f6712c12b51586f86c331a2aad4ad6afb
Devices currently delay collecting UID stats during common operations
like global alerts to reduce parsing load. Here we introduce a flag
to always collect UID and iface stats together to aid debugging.
Bug: 5321340
Change-Id: Ia8e1daf1a6f9d5f5cf1f64a04b6b6766ee965ab6
When ifaces change, poll UID stats without persisting, since they
depend on knowing active iface to store correctly. Log dropped UID
stats when iface is unknown. Switch to using flags when calling
performPoll().
Enforce that "idx" values are consistent from xt_qtaguid. Transition
to using Log.wtf() for important checks, mostly around file I/O,
kernel stats parsing, and kernel module control. Increase stats
persist threshold to 2MB to reduce churn.
Bug: 5269476, 5270106
Change-Id: I721215bfb65127f95775c71cf135e907cd567e92
New broadcast that is dispatched immediately after connectivity
changes have been handled by ConnectivityService, bypassing any
applicable CONNECTIVITY_CHANGE_DELAY.
Also protect CONNECTIVITY_CHANGE broadcasts, since they should only
be sent by system.
Bug: 5198167
Change-Id: I75f1fb44b21da1879f0ab960bcaa481126d70fde
When reading network counters, always splice in xt_qtaguid values
to avoid counting backwards. Test to verify.
Remove verbose logging around global alerts, and add dumpsys debug
info for NMS and MDST. Also fix subtle bug around stats persisting
and dumping.
Bug: 5212893, 5211028
Change-Id: I783e5286637a67ee2dd2b09878198711a926d0cb
