tree 69accc664962c391afc0c8342b0ce1eca1e9e3b1
parent 168a96643debfabbfbd280e95ee57f81fd35e9d6
author Hungming Chen <nuccachen@google.com> 1608550789 +0800
committer Hungming Chen <nuccachen@google.com> 1611315444 +0800

[NFCT.TETHER.7] Prepare the downstream information for IPv4 offload rule

Add and remove downstream client information to BpfCoordinator

Required for building IPv4 forwarding rule when a conntrack event is
received. The IpServer provides the following elements of a rule which
is not included in conntrack event:
- Downstream interface index
- Downstream Mac address
- Client IP address to Client Mac address

Test: atest TetheringCoverageTests
Change-Id: I84db13acc047ace5730d17f0d3dd99544f516084