tree 842932dd531c7eb834964e18b4b42562f2b48385
parent 54e28fed8ac029b884da1cf652ad24601eee2d8e
author Hongguang Chen <hgchen@google.com> 1587527884 -0700
committer Hongguang Chen <hgchen@google.com> 1589581121 -0700

Add EthernetDevice to manage ethernet connection.

The current fastbootd only supports USB protocol. But some Android TV
devices are built without USB port. The fastbootd cannot be used on
those ATV devices due to it. aosp/1295566 enables fastbootd over
ethernet.

This change adds an EthernetDevice to manage ethernet connection and set
fastbootd protcol property fastbootd.protocol to enable fastbootd over
ethernet in recovery mode. It uses IPv6 link-local address to not expose
the devices out of the network segment. The devices who want to use this
EthernetDevice should add
“TARGET_RECOVERY_UI_LIB := librecovery_ui_ethernet” into BoardConfig.mk.

BUG: 152544169
Test: Enter and exit fastboot mode and check eth0 IPv6 link-local address
on screen UI.

Change-Id: I73fe44be3790bdba5a6059fbba3f7264b21eed99