Generating a Timestamp

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[The TCP chimney offload feature is deprecated and should not be used.]

To generate a timestamp, an offload target adds its timestamp delta to its current time:

Timestamp=NicTime+NicDelta

This equation contains the following:

  • NicTime is the offload target's current time.

  • NicDelta is the offload target's timestamp delta.

The offload target supplies this sum (NicTime+NicDelta) as the timestamp in a TCP segment to be transmitted.

The host stack generates a timestamp in a similar way: it adds its delta to its current time and supplies this sum as the timestamp in a TCP segment to be transmitted.