Report to developers if active network is "metered" and define it
as the user being sensitive to heavy data usage.
Bug: 3001465
Change-Id: I855ca3cd3eb1de3c4814148d70ccf24957af898a
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
When Wi-fi connects at L2 layer, the beacons reach and the device
can maintain a connection to the access point, but the application
connectivity can be flaky (due to bigger packet size exchange).
We now use Watchdog to monitor the quality of the last hop on
Wi-Fi using signal strength and ARP connectivity as indicators
to decide if the link is good enough to switch to Wi-Fi as the uplink.
ARP pings are useful for link validation but can still get through
when the application traffic fails to go through and thus not best indicator
real packet loss since they are tiny packets (28 bytes) and have
much low chance of packet corruption than the regular data
packets.
Signal strength and ARP used together ends up working well in tests.
The goal is to switch to Wi-Fi after validating ARP transfer
and RSSI and then switching out of Wi-Fi when we hit a low
signal strength threshold and waiting until the signal strength
improves and validating ARP transfer.
Change-Id: Ica593291ec7772da892f03cf45b649635b730c47
Instead of trusting NTP time alone, use the most-conservative of
system clock and NTP.
Bug: 5584564
Change-Id: I5dd87fc009959b1cf0a7d660e385a0b1a8be238b
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
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
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
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
Useful for checking if on a wifi-only device.
Similar to asking for NetworkInfo for a network type and checking for
null, though here the intent is explicit.
bug:5087537
Change-Id: Ia3ddd09b6b735b8b3ceb7a347891e015fd96b218
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 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
Add policy controls to NetworkStateTracker which are combined with
other user preference and internal flags to decide if data connection
should be established. Better locking around enabled flags.
When data network would be over limit, proactively disable data on
that network. Enable when policy is snoozed or when cycle resets.
Track and dismiss notifications from now-stale policies.
Bug: 4587023, 5178147
Change-Id: Ibfcc9f73cda7c369209af701b46eddd3d1943f2d
When restricting background data, show ongoing notification to give
easy access to re-enable. Deprecate getBackgroundDataSetting() API
to always return true, since NetworkInfo.isConnected() is new source
of truth. Handle upgrade path by reading from existing secure value,
and kick one last broadcast when changing value. Remove background
data code from ConnectivityService.
Remove warning alerts, since they push ifaces into restricted list;
should only happen when iface has limit.
Bug: 5163559, 5129421
Change-Id: I0064d9d643656a4d32aaae51d4a58bce49fe295f
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
- ConnectivityService interaction and support for running dhcp server
and client
- State machine enhancements for connectivity interaction
Change-Id: Iba3beb8c87554ffd67a7b7e852bbb4dd8666a4f5
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
Used to grab immutables but now will copy the data so the result
is mutable and we don't get crashes.
bug:5051667
Change-Id: I0878bf8c58069055f528121541d1911f404cbe49
Sets the current default interface and sets the dns per interface.
port of changes 23041 and 22098 from opensource.
bug:5060618
Change-Id: I80e7ef88727eeb8ff2b48059f69b270e5a6b5c16
