Receive processing in communications between computing device(s) and a network interface card

A computer system comprising:

• at least one computing device;
• a set of one or more computer-readable storage media;
• and
• program instructions, collectively stored in the set of one or more computer-readable storage media, for causing the at least one computing device to perform computer operations including:
• executing an adapter module on a computing device, the adapter module to be used to transmit packets from a network interface card to a control program executing within the computer system;
• obtaining, by the adapter module executing on the computing device, packet information of a packet received at the network interface card;
• generating, based on obtaining the packet information, a packet completion queue entry in a packet completion queue, the packet completion queue entry to include the packet information;
• storing the packet information in the packet completion queue entry, the packet information to be used to locate a data buffer into which the packet is stored, wherein the packet information includes information to locate an entry of a receive data queue, the entry of the receive data queue including a buffer address of the data buffer into which the packet is stored, the packet completion queue and the receive data queue being part of a queue structure, the queue structure having a queue descriptor record, the queue descriptor record including an address used to locate the packet completion queue and another address used to locate the receive data queue;
• and
• providing the packet completion queue entry to the control program to be used by the control program to retrieve the packet from the data buffer.

A computer program product comprising:

• a set of one or more computer-readable storage media;
• and
• program instructions, collectively stored in the set of one or more computer-readable storage media, for causing at least one computing device to perform computer operations including:
• executing an adapter module on a computing device of a computing environment to be used to transmit packets from a network interface card of the computing environment to a control program executing within the computing environment;
• obtaining, by the adapter module executing on the computing device, packet information of a packet received at the network interface card;
• generating, based on obtaining the packet information, a packet completion queue entry in a packet completion queue, the packet completion queue entry to include the packet information;
• storing the packet information in the packet completion queue entry, the packet information to be used to locate a data buffer into which the packet is stored, wherein the packet information includes information to locate an entry of a receive data queue, the entry of the receive data queue including a buffer address of the data buffer into which the packet is stored, the packet completion queue and the receive da ta queue being part of a structure, the queue structure having a queue descriptor record, the queue descriptor record including an address used to locate the packet completion queue and another address used to locate the receive data queue;
• and
• providing the packet completion queue entry to the control program to be used by the control program to retrieve the packet from the data buffer.

A computer-implemented method comprising:

• executing a control program on a computing device of a computing environment, the control program to receive packets transmitted from a network interface card of the computing environment;
• obtaining, by the control program, packet information from a packet completion queue entry of a packet completion queue, the packet completion queue entry generated by an adapter module executing within the computing environment and the packet information to be used to locate a data buffer into which the packet is stored by the network interface card, wherein the packet information includes information to locate an entry of a receive data queue, the entry of the receive data queue including a buffer address of the data buffer into which the packet is stored, the packet completion queue and the receive data queue being part of a queue structure, the queue structure having a queue descriptor record, the queue descriptor record including an address used to locate the packet completion queue and another address used to locate the receive data queue;
• and
• receiving, by the control program, the packet transmitted from the network interface card, the receiving including locating the packet in the data buffer using the packet information and consuming the packet from the data buffer.

A computer program product comprising:

• a set of one or more computer-readable storage media;
• and
• program instructions, collectively stored in the set of one or more computer-readable storage media, for causing at least one computing device to perform computer operations including:
• executing a control program on a computing device of a computing environment, the control program to receive packets transmitted from a network interface card of the computing environment;
• obtaining, by the control program, packet information from a packet completion queue entry of a packet completion queue, the packet completion queue entry generated by an adapter module executing within the computing environment and the packet information to be used to locate a data buffer into which the packet is stored by the network interface card, wherein the packet information includes information to locate an entry of a receive data queue, the entry of the receive data queue including a buffer address of the data buffer into which the packet is stored, the packet completion queue and the receive data queue being part of a queue structure, the queue structure having a queue descriptor record, the queue descriptor record including an address used to locate the packet completion queue and another address used to locate the receive data queue;
• and
• receiving, by the control program, the packet transmitted from the network interface card, the receiving including locating the packet in the data buffer using the packet information and consuming the packet from the data buffer.