Data buffer method and device

Abstract

The present invention discloses a data cacheing method and a device thereof, relating to the information storage field; the invention is designed for solving the problem that the information for storing cacheing resource occupies excessive storage space in the data cacheing process. The technical proposal of the present invention is as follows: the data cacheing method comprises the following steps of receiving data, obtaining the source information of the data; searching a cacheing address index table to know whether data cacheing channels are allocated for the source information, wherein, the cacheing address index table records the source information of the data cached in each of the data cacheing channels; if the data cacheing channels are allocated for the source information, the received data is cached to the searched data cacheing channels. The embodiment of the present invention provides a data cacheing method and a device, which are applicable for cacheing group type data.

Description

Technical field [0001] The invention relates to the field of information storage, in particular to a data caching method and device. Background technique [0002] In order to enable the normal transmission of IP packets in different networks, the source port (Source Port, abbreviated as: SP) often needs to fragment the IP packets before sending the IP packets; the outgoing port of the network receives the In the case of an IP message, the IP message fragments from the same SP are reassembled into a complete IP message. [0003] Before the outbound port of the network reassembles the IP packet, it needs to buffer the IP packet. The specific caching step includes: receiving the IP packet fragment at the outgoing port of the network, and obtaining the SP information of the IP packet fragment; searching in the reorganization information table whether a data cache channel is allocated for the SP information, and the reorganization information table is Each SP information records the d...

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Problems solved by technology

[0007] In the process of implementing the present invention, the inventor found that the prior art has the following technical problems: since the reorganization information table records the data cache channel address and status information that it caches for each SP information, when the outgoing port of the network can When the number of received SPs increases, the information recorded in the reorganization information table will also increase accordingly

However, the number of data cache channels is fixed. When there are no free data cache channels, the outbound port of the network will discard the IP packets that have no data cache channels allocated.

Even if the data cache channel is not allocated for the SP, the reorganization information table will also record the data cache channel address and status information (for example: the record cache channel address is empty and the status information is abnormal) for the SP information record, causing waste of storage resources

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