MACsec Intel FPGA System Design User Guide

ID 767516
Date 6/26/2023

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Document Table of Contents Cut Through/Store Forward Mode

Multi Interface Buffer supports streaming mode as well store-and-forward mode based on CSR register settings per interface as a pseudo-static setting (no pending traffic during mode switching). In store-and-forward mode:

Once a complete packet is received, it is available on the buffer outlet

Packet length information is calculated by the Buffer and valid on the Buffer outlet during AXI start of packet

There is an option to discard packet if the packet contains forwarded fatal error indicated by AXI tuser_tlast_uerr_fatal or any error in the AXI tuser_rx_client from HSSI Sub-System.