Use netlink listener to track destroyed socket

Add a netlink SkDestroyListener in TrafficController to listen to the
broadcast from kernel when a inet socket get destroyed. The broadcast
message contains the socket cookie of the destroyed socket and
TrafficController uses it to remove the tag/uid information stored
inside cookieTagMap if the process that create and tag the socket forget
to untag it before closing the socket.

Bug: 30950746
Test: Rewrite NativeQtaguidTest.cpp to support eBPF module.
Change-Id: I46d5067c38bc3ecd6cd96db364c3897db25b4e10

0 files changed, 0 insertions, 0 deletions