Refactored NetworkManagerService to support Data Saver.
Netd provides 2 bandwidth control rules to restrict which uids can use
metered networks:
- bw_penalty_box is a blacklist-based firewall chain used to determine
which uids do not have access to metered interfaces.
- bw_happy_box is whitelist-based firewall chain used to determine which
uids have access to metered interfaces.
Currently, both NetworkManagerService (NMS) and
NetworkPolicyManagerService (NPMS) uses just the bw_penalty_box rule,
which makes turning Data Saver mode on / off too slow (since NPMS needs
to build the bw_penalty_box on demand); this CL adds support for both
rules on NMS, although NPMS doesn't take advantage of it yet (it will be
refactored in a separate CL).
BUG: 27127112
BUG: 26685616
Change-Id: Ib954574f7c86269fc9b4cf8ce4ba72ba5878c23d
4 files changed