Messages in this thread |  | | Date | Thu, 5 Sep 2002 01:09:10 +0100 | From | Jamie Lokier <> | Subject | Re: TCP Segmentation Offloading (TSO) |
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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.
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