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Efficient Content-Addressable Memory Lookup Result Integrity Checking and Correcting Operations Including for Protecting the Accuracy of Packet Processing Operations
Efficient Content-Addressable Memory Lookup Result Integrity Checking and Correcting Operations Including for Protecting the Accuracy of Packet Processing Operations
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机译:高效的内容可寻址内存查找结果完整性检查和纠正操作,包括保护数据包处理操作的准确性
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摘要
In one embodiment, content-addressable memory lookup result integrity checking and correcting operations are performed, such as, but not limited to protecting the accuracy of packet processing operations. A lookup operation is performed in the content-addressable memory entries based on a lookup word resulting in one or more match vectors. One or multiple result match vectors are produced, depending on whether each of the content-addressable memory entries and the lookup word have been partitioned into multiple portions. An error accuracy code (e.g., error detection, error correction) is acquired for each portion of the one or multiple portions based on a corresponding portion of the lookup word. An accurate result is generated by processing each of the result match vector(s) with their corresponding error accuracy code. When using multiple portions, the (possibly corrected) result match vectors are combined into a single accurate result match vector.
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