WO2014127693A1 - 一种双重滑动窗口实现报文查找的方法 - Google Patents

一种双重滑动窗口实现报文查找的方法 Download PDF

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Publication number
WO2014127693A1
WO2014127693A1 PCT/CN2014/071221 CN2014071221W WO2014127693A1 WO 2014127693 A1 WO2014127693 A1 WO 2014127693A1 CN 2014071221 W CN2014071221 W CN 2014071221W WO 2014127693 A1 WO2014127693 A1 WO 2014127693A1
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sliding window
transmission
link
level
message
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PCT/CN2014/071221
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English (en)
French (fr)
Inventor
王恩东
胡雷钧
李仁刚
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浪潮电子信息产业股份有限公司
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Priority to JP2015543293A priority Critical patent/JP5952506B2/ja
Priority to EP14754402.7A priority patent/EP2899926B1/en
Publication of WO2014127693A1 publication Critical patent/WO2014127693A1/zh
Priority to US14/534,379 priority patent/US20150109937A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/50—Testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4604—LAN interconnection over a backbone network, e.g. Internet, Frame Relay
    • H04L12/462—LAN interconnection over a bridge based backbone
    • H04L12/4625—Single bridge functionality, e.g. connection of two networks over a single bridge
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/30—Peripheral units, e.g. input or output ports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/40—Constructional details, e.g. power supply, mechanical construction or backplane

Definitions

  • the invention relates to the field of high-end server design and the field of large-scale integrated circuit design, and particularly relates to a method for implementing message search by using a double sliding window.
  • the object of the present invention is to realize the following method, using a three-stage barrel shift register to store the input message data, and confirming the position of the sliding window 1 at 32 positions through the preliminary test of the link, thereby ensuring the message data. Located at the center of the sliding window 1, it is ensured that the position of the sliding window 1 is maximized to satisfy the transmission characteristics of the specific link. After the position of the sliding window 1 is confirmed, the dynamic adjustment mode of the sliding window 2 is adopted, and the 32-bit message data can be effectively searched in the sliding window 1, and the 32-bit transmission offset of the message data is allowed to realize the double sliding window.
  • the system structure of the message search method includes: (1) a first-level sliding window, and (2) a secondary sliding window, where:
  • the first-level sliding window refers to the analysis of the transmission performance according to the design specifications and transmission characteristics of the physical link, and determines the specific position of the first-level sliding window by means of preliminary testing, so that the message data is located at the center of the sliding window 1.
  • the secondary sliding window refers to the specific position of the message data in the range of the first sliding window through the secondary sliding window based on the determination of the first sliding window, wherein the maximum deviation of the message data is allowed. It is moved to 32 bits, and the message is searched through the double sliding window to realize the reliability and stability of high-speed link message transmission.
  • the transmission characteristic management can be specifically performed for each transmission link, so that the first-level sliding
  • the position of the window satisfies each transmission link, so that the transmission characteristics of each link are matched by different sliding windows, which ensures the efficiency and stability of the link transmission to the greatest extent, because the position of the first sliding window is the message.
  • the data is set based on its center position, so the dynamic adjustment of the secondary sliding window is more reliable, and the consistency of multi-channel message transmission is improved.
  • the first-level sliding window adopts the evaluation and prediction method due to the structural characteristics of the high-speed transmission link interface and the design features of the high-speed interconnection protocol, as well as the transmission impact caused by the high-speed link transmission line delay and the inconsistency of multi-channel message transmission. Determining the position of the first-level sliding window, the fuzzy guarantee message data is located at the center of the first-level sliding window, and the position of the first-level sliding window of each channel in the multi-channel system can be different, thereby achieving a highly matching sliding window structure and transmission link characteristics. .
  • the invention has the following advantages: the message search method implemented by the double sliding window improves the stability of high-speed link message transmission and the consistency of multi-channel message transmission, and has a very high-speed interconnection interface logic or protocol implementation field. High technical value and application value.
  • FIG. 1 is a schematic diagram of a two-stage sliding window structure
  • FIG. 2 is a schematic diagram of a first-stage sliding window structure
  • FIG. 3 is a schematic diagram of a second-stage sliding window structure.
  • the structure of the first-level sliding window realizes the structure, mainly refers to analyzing the transmission performance according to the design specifications and transmission characteristics of the physical link, and determining the specific position of the first-level sliding window by means of preliminary testing, so that the message data is located in the sliding
  • the center position of window 1 to ensure that the first-level sliding window satisfies the transmission characteristics of the specific link to the greatest extent. Different transmission links are slipped at different levels due to their different delays.
  • the moving window can be different; the secondary sliding window realizes the characteristics of the structure, mainly refers to the determination of the message data in the range of the first sliding window through the secondary sliding window based on the determination of the first sliding window.
  • the specific location which allows the maximum offset of the message data to be 32 bits.
  • the message search method implemented by the double sliding window realizes the reliability and stability of high-speed link message transmission.
  • the transmission characteristic management can be specifically performed for each transmission link, so that the position of the first-level sliding window satisfies each transmission link, so that the transmission characteristics of each link are matched by different sliding windows, and the maximum degree is The efficiency and stability of link transmission are guaranteed.
  • the position of the search message can be dynamically adjusted through the secondary sliding window, wherein the transmission offset of the message is allowed to be no more than 32 bits, and the position of the first-level sliding window is set based on the central location of the message data. Therefore, the dynamic adjustment of the secondary sliding window is more reliable.
  • the message search method implementation structure implemented by the dual sliding window in the present invention mainly includes: a first-level sliding window implementation structure (1) and a second-level sliding window implementation structure (2).
  • the three barrel-shaped shift registers of reg0, regl, and reg2 are used, and the barrel shift register has a bit width of 32 bits and a depth of 32.
  • the sliding window 1 can be slid from B0-C31 to A0-B31, and can slide a total of 32 bits. According to the rules and characteristics of the hardware physical design, or according to the analysis of the results of the hardware test, determine the characteristics of each transmission channel, and determine the specific position of the sliding window 1.
  • the sliding window 1 can be placed at the B0-C31 position, so that the message data is located at the center of the sliding window;
  • the sliding window 1 can be placed in the A14-C13 position, so that the message data is at the center of the sliding window;
  • the sliding window 1 can be placed in the A24-C23 position, so that the message data is at the center of the sliding window.
  • the sliding window 2 can be slid from the B28-C27 to the A28-B27, and the total sliding position can be 32 bits, according to the specific position of the message search during transmission.
  • the interval can effectively find the message.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Communication Control (AREA)

Abstract

本发明提供一种双重滑动窗口实现报文查找的方法，该方法是采用三级桶形移位寄存器存储输入的报文数据,通过链路的初步测试，在32个位置确认滑动窗口1的位置，以此保证报文数据位于滑动窗口1的中心位置,因此最大程度保证了滑动窗口1的位置满足具体链路的传输特性。当滑动窗口1的位置确认后，采用滑动窗口2的动态调节方式，可在滑动窗口1内有效查找32位的报文数据，并且允许报文数据发生32位的传输偏移，考虑到高速传输链路传输线延迟给链路传输带来的影响,采用双重滑动窗口的实现方法实现报文查找方法最大程度的满足具体链路的传输特性。双重滑动窗口实现的报文查找方法提高了高速链路报文传输的稳定性，以及多通道报文传输的一致性，在高速互连接口逻辑或者协议实现领域具有很高的技术价值和应用价值。

Description

一种双重滑动窗口实现报文查找的方法
技术领域
本发明涉及高端服务器设计领域和大规模集成电路设计领域， 具体涉及一 种双重滑动窗口实现报文查找的方法。
背景技术
随着计算机技术和集成电路技术的飞速发展， 为了满足经济社会发展的需 要， 高端服务器系统成为制约社会发展关键领域的瓶颈之一。 庞大的数据计算 和数据分析， 复杂的图形分析和科学预算等信息领域对计算机系统的性能要求 极高。 因此需要构建庞大的高端服务器系统， 以便更好适应当今各领域的应用 需求， 但是另一方面也陷入了高速互连报文传输的技术难题中， 在高速互连接 口中， 因走线延迟带来的传输差异， 以及多通道传输的传输一致性差异， 均给 系统的稳定性和执行效率带来了影响。 因此采用合理的实现方法， 控制链路的 传输特性， 使报文传输的方法最大化满足具体链路的传输特性是实现高端服务 器系统高速互连接口传输稳定性的有效方法之一。
发明内容
本发明的目的是提供一种双重滑动窗口实现报文查找的方法。 本发明的目的是按以下方式实现的， 采用三级桶形移位寄存器存储输入的 报文数据,通过链路的初步测试，在 32个位置确认滑动窗口 1的位置，以此保证报 文数据位于滑动窗口 1的中心位置,因此最大程度保证了滑动窗口 1的位置满足 具体链路的传输特性。 当滑动窗口 1 的位置确认后， 采用滑动窗口 2的动态调 节方式， 可在滑动窗口 1内有效查找 32位的报文数据， 并且允许报文数据发生 32位的传输偏移， 实现双重滑动窗口报文查找方法的系统结构包括： （1 ) 一级 滑动窗口， （2) 二级滑动窗口， 其中：
一级滑动窗口， 是指根据物理链路的设计规格和传输特性要求， 分析其传 输性能， 并且通过初步测试的方式确定一级滑动窗口的具体位置， 使报文数据 位于滑动窗口 1 的中心位置， 以此最大程度的保证一级滑动窗口满足具体链路 的传输特性， 不同的传输链路因其走线延迟的不同而允许一级滑动窗口不同； 二级滑动窗口， 是指在一级滑动窗口确定的基础上， 通过二级滑动窗口在 一级滑动窗口的范围内通过动态调节， 查找报文数据的具体位置， 其中允许报 文数据的最大偏移为 32位， 通过双重滑动窗口对报文查找， 实现高速链路报文 传输的可靠性与稳定性， 通过一级滑动窗口能具体针对每一条传输链路进行传 输特性管理， 使一级滑动窗口的位置满足每一条传输链路， 使每一条链路的传 输特性均得到不同滑动窗口的匹配， 最大程度保证了链路传输的效率与稳定性， 因一级滑动窗口的位置是使报文数据位于其中心位置为依据而设置的， 因此二 级滑动窗口的动态调节更有可靠保证， 提高了多通道报文传输的一致性。
一级滑动窗口因高速传输链路接口的结构特点和高速互连协议的设计特 点， 以及高速链路传输走线延迟带来的传输影响和多通道报文传输的不一致性， 采用评估和预测方式确定一级滑动窗口的位置， 模糊保证报文数据位于一级滑 动窗口的中心位置， 并且多通道系统中各通道的一级滑动窗口位置可以不同， 从而实现滑动窗口结构与传输链路特性高度匹配。 本发明的有益效果是： 双重滑动窗口实现的报文查找方法提高了高速链路 报文传输的稳定性， 以及多通道报文传输的一致性， 在高速互连接口逻辑或者 协议实现领域具有很高的技术价值和应用价值。
附图说明
图 1是两级滑动窗口结构示意图； 图 2是第一级滑动窗口结构示意图； 图 3是第二级滑动窗口结构示意图。
具体实施方式
参照说明书附图对本发明的方法作以下详细地说明。 一级滑动窗口实现结构的特性， 主要是指根据物理链路的设计规格和传输 特性要求， 分析其传输性能， 并且通过初步测试的方式确定一级滑动窗口的具 体位置， 使报文数据位于滑动窗口 1 的中心位置， 以此最大程度的保证一级滑 动窗口满足具体链路的传输特性， 不同的传输链路因其走线延迟的不同一级滑 动窗口可以不同； 二级滑动窗口实现结构的特性， 主要是指在一级滑动窗口确 定的基础上， 通过二级滑动窗口可以在一级滑动窗口的范围内通过动态调节， 查找报文数据的具体位置， 其中允许报文数据的最大偏移为 32位。 这种双重滑 动窗口实现的报文查找方法， 实现了高速链路报文传输的可靠性与稳定性。 通 过一级滑动窗口可以具体针对每一条传输链路进行传输特性管理， 使一级滑动 窗口的位置满足每一条传输链路， 使每一条链路的传输特性均得到不同滑动窗 口的匹配， 最大程度保证了链路传输的效率与稳定性。 通过二级滑动窗口可以 动态的调整查找报文的位置， 其中允许报文的传输偏移不超过 32位， 因一级滑 动窗口的位置是使报文数据位于其中心位置为依据而设置的， 因此二级滑动窗 口的动态调节更有可靠保证。 正如发明内容中所描述的， 本发明中双重滑动窗口实现的报文查找方法实 现结构主要包括： 一级滑动窗口实现结构 （1 )、 二级滑动窗口实现结构 （2)。
外部 32位的报文数据输入双重滑动窗口模块后， 经过 reg0、 regl、 reg2三 个桶形移位寄存器， 桶形移位寄存器位宽为 32位， 深度为 32。滑动窗口 1可以 由 B0-C31滑动到 A0-B31 ,共可以滑动 32位。根据硬件物理设计的规则和特性， 或者根据硬件测试的结果分析， 确定各个传输通道的特性， 确定滑动窗口 1 的 具体位置。 例如， 当因走线延迟导致 32位的报文数据落在 regl [18]-reg2[17]时， 滑动窗口 1可放置在 B0-C31位置，使报文数据位于滑动窗口的中心位置； 当 32 位的报文数据落在 reg0[30]-reg2[29]时， 滑动窗口 1可放置在 A14-C13位置， 使 报文数据位于滑动窗口的中心位置； 当 32位的报文数据落在 regl [8]-reg2[7]时， 滑动窗口 1可放置在 A24-C23位置， 使报文数据位于滑动窗口的中心位置。 当滑动窗口 1位置确定后， 例如滑动窗口 1位于 A24-C23位置， 滑动窗口 2可以由 B28-C27滑动到 A28-B27, 共可以滑动 32位， 根据传输过程中报文查 找的具体位置在此区间内可有效查找报文。 除说明书所述的技术特征外， 均为本专业技术人员的己知技术。

Claims

权利要求书
1、 一种双重滑动窗口实现报文查找的方法， 其特征在于采用三级桶形移位 寄存器存储输入的报文数据,通过链路的初步测试，在 32个位置确认滑动窗口 1 的位置，以此保证报文数据位于滑动窗口 1的中心位置,因此最大程度保证了滑动 窗口 1 的位置满足具体链路的传输特性。 当滑动窗口 1 的位置确认后， 采用滑 动窗口 2的动态调节方式， 可在滑动窗口 1内有效查找 32位的报文数据， 并且 允许报文数据发生 32位的传输偏移， 实现双重滑动窗口报文查找方法的系统结 构包括： （1 ) 一级滑动窗口， （2) 二级滑动窗口， 其中：
一级滑动窗口， 是指根据物理链路的设计规格和传输特性要求， 分析其传 输性能， 并且通过初步测试的方式确定一级滑动窗口的具体位置， 使报文数据 位于滑动窗口 1 的中心位置， 以此最大程度的保证一级滑动窗口满足具体链路 的传输特性， 不同的传输链路因其走线延迟的不同而允许一级滑动窗口不同； 二级滑动窗口， 是指在一级滑动窗口确定的基础上， 通过二级滑动窗口在 一级滑动窗口的范围内通过动态调节， 查找报文数据的具体位置， 其中允许报 文数据的最大偏移为 32位， 通过双重滑动窗口对报文查找， 实现高速链路报文 传输的可靠性与稳定性， 通过一级滑动窗口能具体针对每一条传输链路进行传 输特性管理， 使一级滑动窗口的位置满足每一条传输链路， 使每一条链路的传 输特性均得到不同滑动窗口的匹配， 最大程度保证了链路传输的效率与稳定性， 因一级滑动窗口的位置是使报文数据位于其中心位置为依据而设置的， 因此二 级滑动窗口的动态调节更有可靠保证， 提高了多通道报文传输的一致性。
2、 根据权利要求 1所述的报文查找的方法， 其特征在于一级滑动窗口因高 速传输链路接口的结构特点和高速互连协议的设计特点， 以及高速链路传输走 线延迟带来的传输影响和多通道报文传输的不一致性， 采用评估和预测方式确 定一级滑动窗口的位置， 模糊保证报文数据位于一级滑动窗口的中心位置， 并 且多通道系统中各通道的一级滑动窗口位置可以不同， 从而实现滑动窗口结构 与传输链路特性高度匹配。
PCT/CN2014/071221 2013-02-20 2014-01-23 一种双重滑动窗口实现报文查找的方法 WO2014127693A1 (zh)

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EP2899926A1 (en) 2015-07-29
US20150109937A1 (en) 2015-04-23
JP5952506B2 (ja) 2016-07-13
CN103117922A (zh) 2013-05-22
EP2899926A4 (en) 2015-12-23

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