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Method and apparatus encoding a rule for a lookup request in a processor

  • US 9,596,222 B2
  • Filed: 08/02/2012
  • Issued: 03/14/2017
  • Est. Priority Date: 08/02/2011
  • Status: Active Grant
First Claim
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1. A method comprising:

  • encoding a key matching network security rule having at least one dimension by storing in a memory;

    a length of the key matching network security rule;

    a header of the key matching network security rule having at least one header field; and

    at least one rule value field of the key matching network security rule, a given rule value field of the at least one rule value field corresponding to a given dimension of the at least one dimension, a given header field of the at least one header field including at least one dimension validity field storing a dimension validity value, a given dimension validity field of the at least one dimension validity field corresponding to the given dimension of the at least one dimension of the key matching network security rule, the stored length indicating an end of processing for the key matching network security rule, the dimension validity value stored in the given dimension validity field indicating whether the corresponding given dimension is stored to enable the key matching network security rule to occupy less space in the memory.

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