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A method and system for accessing memory through partial direct memory access (DMA)

A memory access, direct technology, applied in the direction of transmission system, digital transmission system, data exchange network, etc., can solve the problem of increasing the waiting time of message processing

Active Publication Date: 2021-06-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The second DMA also increases the latency of message processing

Method used

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  • A method and system for accessing memory through partial direct memory access (DMA)
  • A method and system for accessing memory through partial direct memory access (DMA)
  • A method and system for accessing memory through partial direct memory access (DMA)

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Embodiment Construction

[0016] The following detailed description is provided in conjunction with the accompanying drawings, which are a part of the description and which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, and it is to be understood that other embodiments may be utilized and structural, logical, and electrical changes may be made without departing from the scope of the invention. Accordingly, the exemplary embodiments described below are not to be taken as limiting, and the scope of the present invention is defined by the appended claims.

[0017] In one embodiment, the functions or algorithms described herein may be implemented in software. The software may consist of computer-executable instructions stored on a local or networked computer-readable medium or computer-readable storage device, such as one or more non-transitor...

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Abstract

A method includes interconnecting performing a partial direct memory access of a message to obtain message header data for a message header, using the message header data to generate a message forwarding decision identifying a destination address of the message, and sending the message to the The message destination address initiates direct memory access of the message payload.

Description

[0001] cross application [0002] This application claims priority to U.S. nonprovisional patent application Serial No. 15 / 199,373, entitled Partially Deferred Packet Access, filed June 30, 2016, the entire contents of which are adopted References are incorporated in this application. technical field [0003] The present disclosure relates to direct memory access, and in particular to a method and system for accessing memory through partial direct memory access DMA. Background technique [0004] A software switch can be implemented on a host computer, such as a server, and can be used to forward data from one connected device to another, much like a hardware router. Performing direct memory access (DMA) of the message can transmit the data to the software switch, determine the destination of the data, and then initiate further transmission of the data to the destination. A host operating a software switch may require considerable buffer space in order to receive data and d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/70H04L45/74
CPCH04L45/74H04L49/70H04L69/22
Inventor 逯云松
Owner HUAWEI TECH CO LTD
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