CPU instruction to calculate tcp checksum and udp integrity?

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Subject: CPU instruction to calculate tcp checksum and udp integrity?
From: Jon Zhou <Jon.Zhou@xxxxxxxx>
Date: Mon, 23 May 2011 08:26:07 -0700
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Thread-topic: CPU instruction to calculate tcp checksum and udp integrity?

hi

now I am using sw to calculate the tcp checksum, is there CPU(nehalem) instruction or NIC /kernel API to do such thing?

thanks a lot

jon

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