Mechanism to enable out-of-order packet processing in a datatype engine

A non-transitory computer-readable storage medium storing instructions that when executed by a computer cause the computer to perform a method, the method comprising:

• receiving, by a network interface card (NIC), a plurality of packets corresponding to a read request or a write request, wherein the packets are associated with a datatype descriptor stored in a datatype engine of the NIC,
• wherein each packet is associated with a precomputed context which indicates a value for each dimension of a multi-dimensional array and a start location of the respective packet within a block of a host memory;
• generating, for a respective packet, a datatype handle corresponding to the datatype descriptor and an offset indicating a position of the respective packet within the plurality of packets;
• determining, based on the datatype handle and the offset, that a context for the respective packet is cached;
• initializing the datatype engine based on the cached context;
• generating, by the datatype engine based on the precomputed and cached context, a plurality of read requests or write requests comprising addresses and lengths, thereby allowing the NIC to process out-of-order packets based on the precomputed and cached context;
• and
• caching a current context when processing for the respective packet is complete.

A network interface card, comprising:

• a command unit to receive, by a network interface card (NIC), a plurality of packets corresponding to a read request or a write request, wherein the packets are associated with a datatype descriptor stored in a datatype engine of the NIC,
• wherein each packet is associated with a precomputed context which indicates a value for each dimension of a multi-dimensional array and a start location of the respective packet within a block of a host memory;
• a context-generating unit to generate, for a respective packet, a datatype handle corresponding to the datatype descriptor and an offset indicating a position of the respective packet within the plurality of packets;
• a cache-managing unit to determine, based on the datatype handle and the offset, that a context for the respective packet is cached;
• a datatype engine-managing unit to initialize the datatype engine based on the cached context;
• and
• a request-generating unit to generate, by the datatype engine based on the precomputed and cached context, a plurality of read requests or write requests comprising addresses and lengths, thereby allowing the NIC to process out-of-order packets based on the precomputed and cached context;
• and
• wherein the cache-managing unit is further to cache a current context when processing for the respective packet is complete.