Peripheral component interconnect express (PCIe) accelerator card receiving data in protocol stack of TCP/IP by calling a socket interface function

A communication method applied to a data receiving device, comprising:

• in response to receiving a first notification, calling a target interface to acquire target data moved to a target storage area, wherein the target storage area is a storage area pre-allocated on a double data rate synchronous dynamic random access memory of a target accelerator card, the first notification is configured for representing that the target data has been stored in the target storage area, the target accelerator card is a peripheral component interconnect express (PCIe) accelerator card, the target interface is configured for realizing communication between a protocol stack of transmission control protocol or Internet interconnection protocol and the target accelerator card, and the first notification is sent by the target accelerator card;
• and
• calling the target interface to parse the target data and submitting a parsing result to the protocol stack,
• wherein the data receiving device is a host, the host is provided with a plurality of PCIe accelerator cards including the target accelerator card, and the host and all PCIe accelerator cards form a network to realize communication between the host and the PCIe accelerator cards, and
• wherein the method further comprises, in response to determining that a destination address of the target data is not the address of the host, searching for a data receiving accelerator card of the PCIe accelerator cards that corresponds to the destination address, and sending a second notification to the data receiving accelerator card, wherein the second notification is configured for representing that the target data has been stored in the target storage area of the data receiving accelerator card.

A communication system, comprising:

• a data sending device configured for, in response to determining that there is data to be sent, calling a target interface to move the data to be sent into a target storage area, and sending a target notification to a data receiving device, wherein the target storage area is a storage area pre-allocated on a double data rate synchronous dynamic random access memory of a target accelerator card, the target accelerator card is a peripheral component interconnect express (PCIe) accelerator card, the data to be sent is data sent into a protocol stack of a transmission control protocol or an Internet interconnection protocol by a target application by calling a Socket interface function, the target interface is configured for realizing communication between the protocol stack and the target accelerator card, the target notification is configured for representing that the data to be sent has been stored in the target storage area, and the data sending device is the target accelerator card;
• and
• the data receiving device configured for, in response to receiving the target notification, calling the target interface to acquire the data to be sent moved to the target storage area, and parsing the data to be sent and submitting a parsing result to the protocol stack,
• wherein the data receiving device is a host, the host is provided with a plurality of PCIe accelerator cards including the target accelerator card, and the host and all PCIe accelerator cards form a network to realize communication between the host and the PCle accelerator cards, and
• wherein the data receiving device is configured for in response to determining that a destination address of the data to be sent is not the address of the host, searching for a data receiving accelerator card of the PCle accelerator cards that corresponds to the destination address, and sending a second notification to the data receiving accelerator card, wherein the second notification is configured for representing that the data to be sent has been stored in the target storage area of the data receiving accelerator card.