Facilitating routing by selectively aggregating contiguous data units

A method for facilitation of aggregation of contiguous data packets, such as contiguous I/O adapter stores, is disclosed. Commensurate with receiving data packets to be written to a memory, multiple contiguous data units of the data packets are aggregated into an aggregated data block. The aggregated data block is validated for writing to memory responsive to either the aggregated data block reaching a size which with inclusion of a next contiguous data unit in the aggregated data block would result in the aggregated data block exceeding a configurable size limit, or a next data unit of the plurality of data units to be written to memory being non-contiguous with the multiple contiguous data units.