Information processing method, device and information transmission system
An information processing method and technology of a processing device are applied in the fields of information processing methods and devices, and information transmission systems to achieve the effects of reducing overhead and improving data transmission efficiency
Inactive Publication Date: 2012-08-08
HUAWEI DIGITAL TECH (CHENGDU) CO LTD
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[0004] The inventor finds in the process of implementing the present invention that there are at least the following defects in the process of PCIE data transmission: in the read transaction operation, when the requester needs to complete the When sending more than two TLPs, the completer also needs to return two or more read completion TLPs to the requester. Since the requester sends two or more TLPs to the completer, the requester sends the TLP of the read request to the completer. Occupies a large amount of link bandwidth, resulting in unnecessary waste of link bandwidth
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[0055] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and not to limit the present invention.
[0056] figure 1 Schematic diagram of the layered device architecture in the PCIE protocol, figure 2 for figure 1 The structure diagram of the TLP of the device layer 13 is shown, such as figure 1 , figure 2 As shown, the layered device architecture includes: PCIE device A1 and PCIE device B2. Both PCIE device A1 and PCIE device B2 include: physical layer 11, data link layer 12, device layer 13, PCIE core 14, and device core 15.
[0057] Among them, the physical layer 11 is responsible for receiving data packets transmitted on the physical link, and the data packets transmitted on the physi...
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The embodiment of the invention relates to an information processing method, a device and an information transmission system. The method comprises the following steps: acquiring at least two TLPs in sequence; loading the TLP after the first TLP in the at least two TLPs in the first TLP, configuring the pocket header of the first TLP according to at least one TLP loaded and generating read requestTLP; sending the read request TLP to a completing side; and receiving read completing TLP returned by the completing side according to the read request TLP. The information processing method, the device and the information transmission system provided by the embodiment of the invention generates a read request processing layer protocol packet by loading the at least one processing layer protocol packet into the first processing layer protocol packet; as at least two processing layer protocol packets are not needed to be sent and only the read request processing layer protocol packet loaded with at least one processing layer protocol packet is sent to the completing side, the overhead of link bandwidth is reduced and the data transmission efficiency is improved.
Description
technical field [0001] The invention relates to the technical field of communication, in particular to an information processing method and device, and an information transmission system. Background technique [0002] In a Peripheral Component Interconnect (PCI for short) protocol, a requester and a completer transmit data through a transaction packet, wherein a read transaction is a type of transaction packet. [0003] Enhanced PCI (PCI-Express, referred to as: PCIE) is the third-generation input / output technology that replaces the PCI bus. The data transmission method of the read transaction in the existing PCIE protocol is: the requester sends a read transaction request to the completion party. Layer protocol packet (Transaction Layer Packet, referred to as: TLP), the completer needs to return a TLP indicating the completion of the read to the requester, and only when the requester receives the TLP indicating the completion of the read, it indicates that the read transac...
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IPC IPC(8): H04L29/06H04L12/56H04L1/00
Inventor 张陈怡
Owner HUAWEI DIGITAL TECH (CHENGDU) CO LTD