dscpPolicy: more bpf verifier optimizations

This change avoids the use of multiple conditionals/ifs
by merging them all into one via bitwise arithmetic.

Bug: 361492282
Test: TreeHugger, atest CtsNetTestCases:android.net.cts.DscpPolicyTest
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I05c2f9cbddf14e0388cb8ac99c63ce0c76e46960
3 files changed