[e2e] ICMP & TCP segments with IP ID = 0?

Dan McDonald danmcd at eng.sun.com
Thu May 17 08:19:32 PDT 2001

> In addition the classic global ipid counter is a contended global resource
> on a multiprocessor stack, and maintaining it per destination also has its
> problems.

All CPUs I know of that live in MP machines have primitives that make
atomic-add-return-newval at worst a small spin.  A clean atomic add primitive
in one's kernel or library should solve that problem w/o pain.


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