Currently, 464xlat counts its ipv6 tx traffic into root uid.
When user is making ipv4 upload over ipv6-only network, ipv4
tx traffic may sometimes be counted faster then ipv6 tx
traffic.
Thus, NetworkStatsService may detect non-monotonic values due
to 464xlat adjustment.
So the solution is that: for clatd, make ipv6 tx traffic counts
into clat uid, and then ignore it in the framework side.
Bug: 118602783
Test: 1. manually verify clatd traffic on clat uid.
2. runtest frameworks-net
Change-Id: Ifb478b79e3e281918c70e16d1f90682c78f33db1
If the qtaguid proc file is no longer exist, the device is running new
eBPF module to do traffic accounting. So the NetworkStatsFactory need to
use the proc/net/dev interface to get the per interface traffic stats
summary. Also, adding a test to verify the helper function work properly
Bug: 30950746
Test: run NetworkStatsFactoryTest
Change-Id: Ia36808bf02f1637dd41a3e7c50917b91b1a77524
Follow-up of commit 4ff3a778ab.
Also add @SmallTest annotation to classes moved to tests/net.
Test: no functional change
Bug: 32561414
Change-Id: I0a0e8865d37ba7bae06ce352d3fc385989adc300
For 464xlat scenarios on IPv6 networks, the clatd interface setup
introduces double counting of apps ipv4 traffic. NetworkStatsFactory was
accounting for this on the tx path, but not on the rx path. Also it did
not accounted for the 20 bytes added by the IPv6 header.
This patch subtract correctly the rx and tx traffic from the root uid on
the underlying interface, and also adds correctly the 20 bytes cost per
packet on the stacked interface for 464xlat traffic.
Test: added several new unit tests, based on synthetic data and real
data also.
Bug: 33681750
Change-Id: I2675643b220acbc6110179fa937d4c313b6f5e32
This groups them together with the rest of the networking unit
tests. It also speeds up compile/test cycles ("runtest -x" of one
file goes from 1m15s to 30s).
Test: runtest frameworks-net passes on internal tree
Change-Id: I53cb0c51355fe4b4b30e451fa09fbbf58da39efd
