tree 7d4e15736f55e3998595622e08df34fd84656ea8
parent a1d68e73b9cecce75441ea40b5d05e1a76d4b378
author Jeff Sharkey <jsharkey@android.com> 1407795771 -0700
committer Jeff Sharkey <jsharkey@android.com> 1407807623 -0700

Hack and ship: NetworkStats edition.

Some devices use clatd for catching raw IPv4 traffic when running on
a pure-IPv6 carrier network.  In those situations, the per-UID
stats are accounted against the clat iface, so framework users need
to combine both the "base" and "stacked" iface usage together.

This also means that policy rules (like restricting background data
or battery saver) need to apply to the stacked ifaces.

Finally, we need to massage stats data slightly:

-- Currently xt_qtaguid double-counts the clatd traffic *leaving*
the device; both against the original UID on the clat iface, and
against UID 0 on the final egress interface.

-- All clatd traffic *arriving* at the device is missing the extra
IPv6 packet header overhead when accounted against the final UID.

Bug: 12249687, 15459248, 16296564
Change-Id: I0ee59d96831f52782de7a980e4cce9b061902fff