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1. 发明授权

US07406567B1 Algorithm to improve packet processing performance using existing caching schemes 有权
标题翻译：使用现有缓存方案提高数据包处理性能的算法
公开(公告)号：US07406567B1
公开(公告)日：2008-07-29
申请号：US10291894
申请日：2002-11-08
申请人： Harshad Nakil , Rajashekar Reddy , Hampapur Ajay , Nipa Kumar , Radesh Manian
发明人： Harshad Nakil , Rajashekar Reddy , Hampapur Ajay , Nipa Kumar , Radesh Manian
IPC分类号： G06F12/00
CPC分类号： G06F12/084 , G06F12/0835 , G06F12/109
摘要： A system and method for improving the speed of packet switching in a routing platform that maps shared I/O memory into two address spaces. The first address space is mapped with the cache attribute and uses the cache write through attribute. Addresses in this address space are not equal to the physical address in the shared I/O memory and are translated to the physical addresses. Code executed by the CPU to switch packets utilizes the first address space to access packet data. The second address space is mapped with the non-cache attribute and addresses in this space are equal to the physical addresses in the shared I/O memory. The second address space is utilized by I/O devices when accessing shared I/O memory. Addresses of buffers for storing packet data in the shared I/O memory are converted from the first address space to the second address space when given to I/O devices.
摘要翻译：一种用于提高将共享I / O存储器映射到两个地址空间的路由平台中的分组交换速度的系统和方法。第一个地址空间与缓存属性映射，并使用缓存写入通过属性。该地址空间中的地址不等于共享I / O存储器中的物理地址，并转换为物理地址。由CPU执行切换数据包的代码利用第一个地址空间来访问数据包数据。第二个地址空间与非高速缓存属性映射，该空间中的地址等于共享I / O存储器中的物理地址。访问共享I / O存储器时，I / O设备利用第二个地址空间。将I / O存储器中的分组数据存储的缓冲器的地址从给定给I / O设备的第一地址空间转换为第二地址空间。

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