Contains a reference to a block as it exists in the ring buffer, its block descriptor, and a Vec of individual packets in that block.
Contains a reference to an individual packet in a block, as well as details about that packet
References a single mmaped ring buffer. Normally one per thread.
Settings to be used to bring up each ring
Contains details about individual packets in a block
Contains VLAN tags and RX Hash value (if enabled)
Lower-level settings about ring buffer allocation and behavior tp_frame_size * tp_frame_nr must equal tp_block_size * tp_block_nr