Make GetEspPacketLength calculate lengths dynamically

Modifies GetEspPacketLength function to calculate ESP packet lengths
at runtime, allowing for different payloads to be used as needed.

Bug: 64981540
Test: this
Change-Id: I38f11e110ca310d0a79b1676cc32e87a8aafd370
6 files changed
tree: 1025de80aa2bf92a053ceb868a4b76cf2396e266
  1. net/