Method and system for network processor scheduling based on calculation
    22.
    发明授权
    Method and system for network processor scheduling based on calculation 失效
    基于计算的网络处理器调度方法与系统

    公开(公告)号:US06804249B1

    公开(公告)日:2004-10-12

    申请号:US09548911

    申请日:2000-04-13

    IPC分类号: H04L1256

    摘要: A system and method of moving information units from a network processor toward a data transmission network in a prioritized sequence which accommodates several different levels of service. The present invention includes a method and system for scheduling the egress of processed information units (or frames) from a network processing unit according to service based on minimum bandwidth specifications where position in the queue is adjusted after each service based on minimum bandwidth specificaiton and the length of frame, a process which is subject to rounding errors. To avoid the accumulation of rounding errors inequitably influencing the position of some in the queue, a system to adjust for the rounding errors adds an increased measure of fairness to the system.

    摘要翻译: 一种将信息单元从网络处理器移动到数据传输网络的系统和方法,其以容纳几个不同级别的服务的优先顺序排列。 本发明包括一种方法和系统,用于基于最小带宽规范来调度来自网络处理单元的处理的信息单元(或帧)的处理的信息单元(或帧),其中基于最小带宽规定在每个服务之后调整队列中的位置,并且 帧的长度,一个进行舍入误差的过程。 为了避免累积误差不均衡地影响队列中某些队员的位置,调整舍入误差的系统增加了系统的公平性。

    Method and system for network data flow management with improved completion unit
    23.
    发明授权
    Method and system for network data flow management with improved completion unit 失效
    网络数据流管理方法与系统改进完成单元

    公开(公告)号:US06633920B1

    公开(公告)日:2003-10-14

    申请号:US09479028

    申请日:2000-01-07

    IPC分类号: G06F1300

    CPC分类号: H04L29/06 H04L69/18 H04L69/22

    摘要: A system and method of data flow management, particularly in a multiple network processor architecture where a plurality of independent processing units are simultaneously processing information from different frames of input information. The present invention includes first-in-first-out files identifying the individual frames and correlating the frames with the processor to which the frames have been assigned for processing as well as a first-in-first-out file of processed frames for each processor to allow the frames to be processed independently, then reassembled into the same order as the frames had been received without communication between the independent processors. Additionally, the present system supports newly-created frames as well as the concept of flushing the system without regard to frame order whereby frames are sent out to the network as the processing is completed without regard to input order, overriding the system of putting the output frames in the same order as the input frames were received from the network.

    摘要翻译: 特别是在多个独立处理单元同时处理来自不同输入信息帧的信息的多网络处理器架构中的数据流管理系统和方法。 本发明包括识别各个帧的先进先出文件,并且将帧与已被分配帧进行处理的处理器相关联,以及每个处理器的处理帧的先进先出文件 以允许帧被独立地处理,然后重新组装成与已经被接收的帧相同的顺序,而没有独立处理器之间的通信。 此外,本系统支持新创建的帧以及刷新系统的概念,而不考虑帧顺序,由此在不考虑输入顺序的情况下处理完成而将帧发送到网络,覆盖输出的系统 与从网络接收输入帧相同顺序的帧。

    Cycle saving technique for managing linked lists
    24.
    发明授权
    Cycle saving technique for managing linked lists 失效
    用于管理链表的循环保存技术

    公开(公告)号:US06584518B1

    公开(公告)日:2003-06-24

    申请号:US09479751

    申请日:2000-01-07

    IPC分类号: G06F1314

    CPC分类号: G06F12/023

    摘要: A method and system for queueing data within a data storage device including a set of storage blocks each having an address, a pointer field, and a data field. This set of storage blocks comprises a linked list of associated storage blocks and also a free pool of available storage blocks. The storage device further includes a tail register for tracking an empty tail block from which a data object is enqueued into the linked list. A request to enqueue a data object into the linked list is received within the data storage system. In response to the data enqueue request, an available storage block from the free pool is selected and associated with the tail register. A single write operation is then required to write the data object into the data field of a current tail block and to write the address of the selected storage block into the pointer field of the current tail block, such that the selected storage block becomes a new tail block to which the tail register points.

    摘要翻译: 一种用于在数据存储设备内排队数据的方法和系统,包括一组存储块,每个存储块具有地址,指针字段和数据字段。 这组存储块包括相关联的存储块的链表以及可用存储块的空闲池。 存储装置还包括用于跟踪空尾部块的尾部寄存器,数据对象从该尾部块排入链接列表。 在数据存储系统内接收到将数据对象排入链表的请求。 响应于数据排入请求,从空闲池中选择一个可用的存储块并将其与尾部寄存器相关联。 然后需要单个写入操作来将数据对象写入当前尾部块的数据字段,并将所选择的存储块的地址写入当前尾部块的指针字段,使得所选择的存储块变为新的 尾部寄存器指向的尾部块。

    Full match (FM) search algorithm implementation for a network processor
    30.
    发明授权
    Full match (FM) search algorithm implementation for a network processor 失效
    网络处理器的完全匹配(FM)搜索算法实现

    公开(公告)号:US06675163B1

    公开(公告)日:2004-01-06

    申请号:US09543531

    申请日:2000-04-06

    IPC分类号: G06F1730

    摘要: Novel data structures, methods and apparatus for finding a full match between a search pattern and a pattern stored in a leaf of the search tree. A key is input, a hash function is performed on the key, a direct table (DT) is accessed, and a tree is walked through pattern search control blocks (PSCBs) until reaching a leaf. The search mechanism uses a set of data structures that can be located in a few registers and regular memory, and then used to build a Patricia tree structure that can be manipulated by a relatively simple hardware macro. Both keys and corresponding information needed for retrieval are stored in the Patricia tree structure. The hash function provides an n→n mapping of the bits of the key to the bits of the hash key. The data structure that is used to store the hash key and the related information in the tree is called a leaf. Each leaf corresponds to a single key that matches exactly with the input key. The leaf contains the key as well as additional information. The length of the leaf is programmable, as is the length of the key. The leaf is stored in random access memory and is implemented as a single memory entry. If the key is located in the direct table then it is called a direct leaf.

    摘要翻译: 用于在搜索图案和存储在搜索树的叶中的模式之间找到完全匹配的新型数据结构,方法和装置。 键输入,对密钥执行哈希函数,访问直接表(DT),并通过模式搜索控制块(PSCB),树直到达到叶。 搜索机制使用一组可以位于几个寄存器和常规内存中的数据结构,然后用于构建可由相对简单的硬件宏操作的Patricia树结构。 检索所需的两个密钥和相应的信息都存储在Patricia树结构中。 散列函数提供密钥的比特到散列密钥的比特的n> n映射。 用于存储散列键和树中相关信息的数据结构称为叶。 每个叶对应于与输入键完全匹配的单个键。 叶包含关键以及其他信息。 叶片的长度是可编程的,密钥的长度也是可编程的。 叶存储在随机存取存储器中,并被实现为单个存储器条目。 如果键位于直接表中,则称为直接叶。