Network interface card capable of sharing buffer and buffer sharing method

Abstract

The invention discloses a network interface card capable of sharing a buffer. The network interface card is coupled to a host computer, and the host computer is linked with a network through the network interface card. The network interface card comprises a transmission buffer, a transmission controller, a receiving buffer and a receiving controller, wherein the transmission buffer is used for storing transmitted data provided by the host computer; the transmission controller is used for controlling the transmission buffer to transmit the transmitted data to the network; the receiving buffer is used for storing received data received by the network; the receiving controller is used for controlling the receiving buffer to transmit the received data to the host computer and judging the storage volume of the receiving buffer; when the storage volume is less than a set value, a request signal is transmitted to the transmission controller by the receiving controller; a response signal is generated by the transmission controller according to the request signal and a state signal corresponding to the transmission buffer, and the receiving controller is used for controlling the storage of the received data in the transmission buffer according to the response signal.

Description

technical field [0001] The invention relates to a network interface card, in particular to a buffer sharing method for the network interface card and the buffer. Background technique [0002] A traditional network interface controller (NIC) has the functions of transmitting and receiving, and can be used to receive data from the network environment, and can also transmit data to the network environment. Wherein, the transmitting end and the receiving end each have a dedicated buffer (buffer), which are respectively a transmitting buffer (transmitting buffer) and a receiving buffer (receiving buffer). [0003] As far as the transmitting circuit is concerned, when the computer device has data waiting to be transmitted and notifies the network interface card, the network interface card will read the data from the memory of the computer device, store it in the transmission buffer first, and wait for proper processing before sending it to the network interface card. Send data to...

AI Technical Summary

Problems solved by technology

Through the network interface card or method proposed by the present invention, under the premise of not increasing the storage capacity of the receiving buffer, the idle transmission buffer is used to store more data from the network, thereby solving the problem of data loss, and not Expenses that will add additional costs

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