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
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
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
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
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
Lets the data traffic arrows work on LTE device on 1x,
but also lets telephony monitor for hung radios on 1X.
bug:5531630
Change-Id: I9fa25a5223afaa2e37373668c899ac28a95783fa
Replace TrafficStats calls by reading values from xt_qtaguid kernel
module. To keep BatteryStatsImpl changes lightweight, cache recently
parsed stats. Tracks mobile ifaces from ConnectivityService.
Refactor xt_qtaguid parsing into factory outside of NMS. Add stats
grouping based on UID, and total based on limiting filters like iface
prefix and UID.
Bug: 4902271
Change-Id: I533f116c434b77f93355bf95b839e7478528505b
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
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
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
When recording data usage, measure the actual active time, since
buckets can be quite long. Offer incrementOperationCount() version
that reads thread stats tag for caller. Rethrow any NPE as ISE
during stats parsing, which callers already handle.
Bug: 5171812, 5184508, 5180659
Change-Id: I6da80ccc0162be68bee279529e3a23b6f98ebd87
Instead of polling every 15 minutes, register for alerts that trigger
when system-wide traffic passes a threshold. Still mixed with polling
to persist UID stats, but relaxed to 30 minutes. Currently watches
for every 512kB.
Make persistence decision separately for network versus UID, and use
total delta bytes when making decision. Use light bootstrap during
systemReady() instead of heavy poll, which had been force-loading all
UID data unnecessarily.
Bug: 5023631
Change-Id: I04b723d6c4bf872fb1028071122dba66a8e1b576
Teach NetworkStats about "counter sets" coming from kernel, and use
them to track usage in foreground/background. Add AID_NET_BW_ACCT to
system_server so it can control counter sets.
Move to composite key of NetworkIdentitySet, UID, set, and tag when
recording historical usage. Persisting still clusters by identity,
since that is heaviest object.
Request async stats poll during systemReady() to bootstrap later
delta calculations. Reset kernel counters when UID removed. Update
various tests.
Bug: 5105592, 5146067
Change-Id: Idabec9e3ffcaf212879821515602ecde0a03de8c
Persist NetworkStatsHistory using variable-length encoding; since
most buckets have small numbers, we can encode them tighter. Initial
test showed 44% space savings. Also persist packet and operation
counters.
Let NetworkStatsHistory consumers request which fields they actually
need to reduce parcel overhead.
Tests for verify varint and history field requests, also verify end-
to-end by persisting history into byte[] and restoring. Expose
bandwidth control enabled state. Extend random generation to create
packet and operation counts. Moved operation counts to long.
Fix bug that miscalculated bytes since last persist, which would
cause partial stats loss when battery pulled.
Bug: 4581977, 5023706, 5023635, 5096903
Change-Id: If61e89f681ffa11fe5711471fd9f7c238d3d37b0
Create API to expose quota status derived from underlying network
policy. This is designed to support applications making informed
decisions when performing network requests.
Fix bug with random stats generation, and write policy when changing
restrict background data flag. Deprecate EXTRA_NETWORK_INFO, since
it varies based on UID.
Bug: 4517283, 5088603
Change-Id: Ic6893a8967f69937e466be226ba7bb86ef5a5d2d
Provide API to increment "operation counts" for a UID and tag, used
to eventually derive bytes/operation stats. Internally is stored at
network layer, but should belong at data layer. Switch profiling
to use data layer stats, which are emulated by summarizing network
layer details.
Read packet counts from new /proc/ columns and collect them into
NetworkStatsHistory. Prevent double-counting by ignoring values from
first snapshot. Watch for duplicate /proc/ entries. Update tests
to verify packet and operation counters.
Bug: 5052136, 5097392
Change-Id: I1832f65a2b8a9188f8088f253474a667c21a2f09
Only show warning/limit notifications for active networks, since they
aren't actionable for inactive IMSI. Include IMSI in debug output on
engineering builds.
Move default policy warning to be configured through overlay. Watch
for newly installed packages to enforce global policy.
Bug: 5038729, 5038541, 4979026, 5023634
Change-Id: I8fc8ab4c23c440a3091504ea16133ed6ababf58e
Move template matching to builder methods instead of exposing the
internal constants. Also rule to match Ethernet usage. Buffer
reading and writing of network stats, making operations 5x faster.
Change-Id: Iedb2d0ab3b26a976811c050f84a164e909eb74b6
When requesting historical values with time ranges, always include
full values for buckets that span current time. (It doesn't make
sense to interpolate partial data.) Move getTotalData() to return
full Entry objects to prepare for packet counts.
Bug: 4691901
Change-Id: I717bd721be9f1d4a47c4121e46e07a56cb15bbf1
Instead of exposing internal storage details, offer getValues()
accessor which populates values into a recycled structure.
Change-Id: I5228d7099a8f61b2018a435a813435a67dae49b4
When an iface goes inactive, xt_qtaguid maintains historical counters
instead of discarding. Now reading and returning those values in
NetworkManagementService summary calls. Tests to verify stats are
returned.
Modify NetworkStats to include rxPackets and txPackets values, and
move to Entry to eventually hide internal storage details.
Bug: 4984539
Change-Id: I1ba0bb5580c62e946d9dff2cc2a6f64aff403efc
