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Security association management through the use of lookup tables

  • US 7,409,542 B2
  • Filed: 09/26/2001
  • Issued: 08/05/2008
  • Est. Priority Date: 09/26/2001
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving at a device driver a network packet having a corresponding security association (SA);

    determining if the packet is an ingress packet or an egress packet;

    determining for the packet a key value corresponding to the SA;

    if the packet is an ingress packet, hashing the key value to determine a location of an entry in an ingress lookup table, and if the packet is an egress packet, hashing the key value to determine a location of an entry in an egress lookup table, the entry in the ingress lookup table and the entry in the egress lookup table containing information corresponding to the SA, the ingress lookup table being a separate lookup table from the egress lookup table;

    retrieving from the entry an index to a location of the SA in memory; and

    retrieving the SA from memory based on the index.

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