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    • 2. 发明申请
    • Circuitry for determining network operations in a network device
    • 用于确定网络设备中的网络操作的电路
    • US20070115984A1
    • 2007-05-24
    • US11263300
    • 2005-10-31
    • Vinoj KumarRobert Munoz
    • Vinoj KumarRobert Munoz
    • H04L12/56
    • H04L45/00H04L45/60H04L45/7453H04L49/3009H04L49/602
    • A network processor for determining one or more network operations to be performed on a packet of data in a network comprises processing circuitry and protocol indicator circuitry. The packet of data contains information populating a plurality of protocol header fields. Moreover, the protocol indicator circuitry comprises a plurality of memory elements, each memory element associated with a protocol header field in the plurality of protocol header fields. The processing circuitry determines the one or more network operations to be performed on the packet of data at least in part by addressing one or more lookup tables with the contents of a subset of the plurality of protocol header fields in the packet. This subset is determined by reference to the memory elements in the protocol indicator circuitry. Each memory element is capable of being programmed to indicate whether the associated protocol header field is to be utilized by the processing circuitry in addressing the one or more lookup tables.
    • 用于确定要对网络中的数据分组执行的一个或多个网络操作的网络处理器包括处理电路和协议指示符电路。 数据包包含填充多个协议报头字段的信息。 此外,协议指示符电路包括多个存储器元件,每个存储器元件与多个协议报头字段中的协议报头字段相关联。 处理电路至少部分地通过用分组中的多个协议报头字段的子集的内容寻址一个或多个查找表来确定要对数据包执行的一个或多个网络操作。 该子集通过参考协议指示符电路中的存储元件来确定。 每个存储器元件能够被编程以指示处理电路在寻址一个或多个查找表中是否使用关联的协议报头字段。
    • 4. 发明申请
    • Methods and Apparatus for Performing Network Operations in Network Devices
    • 网络设备中网络运行的方法与装置
    • US20070263619A1
    • 2007-11-15
    • US11382942
    • 2006-05-12
    • Robert Munoz
    • Robert Munoz
    • H04L12/56
    • H04L45/00H04L45/742
    • A network device comprises a plurality of lookup tables and a processor. Each of the plurality of lookup tables comprises a plurality of table inputs that are associated with a plurality of processor instructions. The processor is operative to perform a network operation on a packet of data comprising a plurality of protocol header fields at least in part by performing one or more lookup cycles. A lookup cycle comprises the addressing of one of the plurality of lookup tables with one of the plurality of table inputs and the performing of the processor instruction associated with that table input. At least one of the plurality of processor instructions in the plurality of lookup tables comprises an instruction directing that the content of one of the plurality of protocol header fields be read and that one of the plurality of lookup tables be addressed with that content as the table input.
    • 网络设备包括多个查找表和处理器。 多个查找表中的每一个包括与多个处理器指令相关联的多个表输入。 处理器可操作以至少部分地通过执行一个或多个查找周期对包括多个协议报头字段的数据分组执行网络操作。 查找循环包括使用多个表输入中的一个来执行多个查找表之一的寻址,以及执行与该表输入相关联的处理器指令。 多个查找表中的多个处理器指令中的至少一个包括指令,指示多个协议报头字段之一的内容被读取,并且该多个查找表中的一个查找表与该内容一起被作为表 输入。