Control messaging in multislot link layer flit

摘要

A link layer control message is generated and included in a flit that is to be sent over a serial data link to a device. The flits sent over the data link are to include a plurality of slots. Control messages can include, in some aspects, a viral alert message, a poison alert message, a credit return message, and acknowledgements.

主权项

1. An apparatus comprising:
I/O logic, implemented at least in part in hardware, to:
generate a link layer control message to be included in a flit that is to be sent over a serial data link to a device, wherein flits sent over the data link are to include a plurality of slots, and the plurality of slots enable encoding of a plurality of distinct headers in the flit; andsend the flit with the link layer control message.