Link transfer, bit error detection and link retry using flit bundles asynchronous to link fabric packets

摘要

Method, apparatus, and systems for Link Transfer, bit error detection and link retry using flit bundles asynchronous to link Fabric Packets. A first type of packet comprising a Fabric Packet is generated and its data content is divided into multiple data units called “flits.” The flits are then bundled into a second type of packet comprising Link Transfer Packets (LTPs). The LTPs are then sent over single link segments in a fabric comprising many point-to-point links. Each LTP includes a CRC that is used to ensure that data transmitted over each link segment is error free, and comprises a unit of retransmission. The size of the fabric packets may vary, and they may be larger or smaller than an LTP. The transfer scheme enabled flits from multiple fabric packets to be bundled into a single LTP. Upon receipt at a fabric endpoint, the flits from the LTPs are extracted and reassembled to regenerate the Fabric Packets.

主权项

1. An apparatus, comprising:
a link interface including circuitry and logic to,
generate a plurality of fabric packets;divide each fabric packet into a plurality of data units; andbundle the data units to form a plurality of a link packets,wherein at least one of the plurality of link packets includes data units from at least two fabric packets.