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A comment on Turtles on the Wire: Understanding How the OS Uses the Modern NIC (2016). Parent comment

Re:Turtles on the Wire: Understanding How the OS Uses the Mo... by 0x0 on Sunday April 02, 2017 @05:16PM (#14019084)
It can't possibly an AND operation, can it? If your MAC address has a lot of zero bits you'd get a ton of false positives?
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Re:Turtles on the Wire: Understanding How the OS Uses the Mo... by adrianratnapala on Sunday April 02, 2017 @05:38PM (#14019174)
I think ams... is talking about masking about whatever parts of the header are not the MAC address.

Although whether even that requires AND gates depends on the details of the hardware. Maybe the appropriate bits in the buffer are just directly wired to a comparison unit.

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Re:Turtles on the Wire: Understanding How the OS Uses the Mo... by JdeBP on Monday April 03, 2017 @03:38PM (#14026345)
Such an equality comparison unit would generally be an XOR-NAND combination.
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