BpfClassic.h - more helpers am: 73df7414f1 am: c1b2eb1fb6 am: 73a1bdab90

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2770598

Change-Id: Ie8f961dd212aa32a9bb75a6b651610f6d48da36e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>