Network adaptor optimization and interrupt reduction

A system for network adaptor optimization and interrupt reduction, the system comprising:

• a network configured to communicate data between a plurality of devices;
• an Open Systems Adaptor (OSA) in communication with the network, the OSA comprising:
• a generation module configured to generate an immediate I/O interrupt notification to a host device driver in response to receiving data from the network;
• an update module configured to update an inbound Queued Direct I/O (QDIO) Storage Address Buffer List (SBAL) based on the received data in an inbound QDIO buffer queue;
• a primed state update module configured to set a Storage-List-State Block (SLSB) buffer state from an empty state to a primed state to indicate that the received data is available for processing;
• a host platform operationally coupled with the OSA, the host platform comprising:
• a host device driver comprising:
• a scheduling module configured to schedule a host communications stack;
• an interrupt prevention module configured to set the SLSB buffer state to a state that prevents additional interrupts;
• the host communications stack comprising:
• a polling module configured to enter a polling state causing the host communications stack to wait for available data in the inbound QDIO buffer queue;
• and
• a processing module configured to process the available data.

A method for network adaptor optimization and interrupt reduction, the method comprising:

• building an outbound buffer list based on outgoing data, the outgoing data comprising data to be transmitted to a network;
• adding the outgoing data to an outbound buffer queue;
• setting a buffer state from an empty state to a primed state to indicate that the outgoing data is prepared for transmitting;
• and
• signaling a network adaptor with a notification signal, the network adaptor configured to process the outbound buffer queue and transmit the outgoing data to the network in response to the notification signal, the network adaptor configured to set the buffer state to a polling state indicating that the network adaptor is polling for additional outgoing data, the network adaptor configured to poll for additional outgoing data for a predetermined time interval.

A system for network adaptor optimization and interrupt reduction, the method comprising:

• a host platform comprising:
• a host device driver comprising:
• a build module configured to build an outbound Queued Direct I/O (QDIO) Storage Address Buffer List (SBAL) based on outgoing data;
• a queue addition module configured to add the outgoing data to an outbound QDIO buffer queue;
• a state update module configured to set a Storage-List-State Block (SLSB) buffer state from an empty state to a primed state to indicate that the outgoing data is prepared for transmitting;
• a signal module configured to signal an Open Systems Adaptor (OSA) with a Signal Adapter-write (SIGA-w) signal;
• a network configured to communicate data between a plurality of devices;
• an OSA operationally coupled to the host platform, the OSA in communication with the network, the OSA comprising:
• a receiving module configured to receive the SIGA-w signal;
• a transmission module configured to process the outbound QDIO buffer queue and transmit the outgoing data to the network in response to the SIGA-w signal;
• a polling update module configured to set the SLSB buffer state to a polling state indicating that the OSA is polling for additional outgoing data;
• and
• an OSA polling module configured to poll for additional outgoing data for a predetermined time interval.