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SubjectRe: TCP Segmentation Offloading (TSO)
Alan Cox wrote:
> On Wed, 2002-09-04 at 23:39, Gabriel Paubert wrote:
> > While it would work, this sequence is overkill. Unless I'm mistaken, the
> > only property of bswap which is used in this case is that it swaps even
> > and odd bytes, which can be done by a simple "roll $8,%eax" (or rorl).
>
> bswap is a 32bit swap.

Yes it's different from the roll $8, but if all you need is to swap odd
and even bytes for the IP checksum, either instruction is fine.

-- Jamie
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