System and method for eventless detection of newly delivered variable length messages from a system area network
US6988150B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jun 28, 2002 |
| Grant date | Jan 17, 2006 |
| Priority date | — |
| Expiry date | Mar 14, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/2854
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A shared I/O subsystem that includes a plurality of I/O interfaces for coupling a plurality of computer systems where each of I/O interfaces communicatively couples one of the computer systems to the shared I/O subsystem. The shared I/O subsystem receives, at a first one of the I/O interfaces, a data packet from one of the computer systems coupled to the first one of the I/O interfaces where the data packet has a variable length, arranges, at the first one of the I/O interfaces, the data packet into an internal format where the internal format has a first portion that includes data bits and a second portion that includes control bits, receives the data packet in a buffer in the shared I/O subsystem where the second portion is received after the first portion, verifies, with the shared I/O subsystem, that the data packet has been completely received by the buffer by monitoring a memory bit aligned with a final bit in the second portion of the data packet, and transmits, in response to the verifying, the data packet to another one of the computer systems coupled to a second one of the I/O interfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.