This counter tracks the total number of packets fed into all crypto accelerators in the device combined, since the last reboot. An admin trending this alongside ccaGlobalInOctets can derive average packet size flowing through the crypto subsystem, helping distinguish bulk data transfer with larger packets from something like VoIP-heavy encrypted traffic with many small packets. A sudden rise in this counter without a proportional rise in ccaGlobalInOctets would suggest an influx of many small encrypted packets, which is more taxing per-packet on the accelerators than the same total volume in fewer, larger packets.