Label distributing method and processing device

Abstract

The embodiment of the invention relates to label distributing method and processing device. The label distributing method comprises the following steps of: receiving a first request data packet sent by an application module, wherein the request data packet carries pseudo label marks for marking different applications; acquiring label marks from a label marking memorizer, wherein the label marks are used for marking the first request data packet; setting and storing the corresponding relation of the label marks and the pseudo label marks according to the acquired label marks; replacing the pseudo label marks by adopting the acquired label marks; constructing a second request data packet carrying the label marks, and sending the second request data packet to a sending port. The label distributing method and processing device of the embodiment of the invention realizes the dynamic correspondence of label marks of different application modules, thereby distributing available label marks in time aiming to the request data packet sent by different application modules, improving the distributing efficiency and the utilization rate of the label marks and improving the utilization rate of bandwidth.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a label allocation method and a processing device. Background technique [0002] The Peripheral Component Interconnect Express (PCI-E) bus is a third-generation high-performance input-output (I / O) bus used to interconnect peripheral devices such as computing and communication platform applications. The PCI-E protocol stipulates that each PCI-E bus device has a tag (tag) identification with two bit widths of 5 bits or 8 bits. When the PCI-E bus device sends a request packet or receives a complete packet, the label identifier is used to mark the sending sequence of the data packet to match the sending / receiving. For example, if the tag identifier marked by the sending request packet is 5, the reception is completed The tag identifier marked by the data packet is also 5, then the request data packet matches the completion data packet. In the design of the PCI-E syst...

AI Technical Summary

Problems solved by technology

[0004] In the process of implementing the present invention, the inventors found that in the prior art, each application module is fixedly assigned different ranges of tag IDs, and tag IDs often appear idle, resulting in tag IDs that cannot be effectively used, for example: endpoint devices There are two application modules, the label identification range allocated for the first application module is 0000-0100, and the label identification range allocated for the second application module is 0101-0111. Assuming that all label identifications have been used up, when the endpoint device receives After a data packet is completed, the label identification (0110) carried by the completion data packet is reclaimed. At this time, the first application module sends a request data packet. Because the label identification (0110) does not belong to the label identification range specified by the first application module , even if there is an available tag identifier (0110) at this time, the first application module still cannot use the tag identifier (0110), causing the tag identifier (0110) to be idle, so that the tag identifier cannot be effectively used

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