Messages in this thread | | | Date | Sat, 5 Jun 1999 11:52:43 +0200 | From | Ralf Baechle <> | Subject | Re: zero-copy TCP fileserving |
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On Fri, Jun 04, 1999 at 07:17:47PM +0200, Jamie Lokier wrote:
> Alan Cox wrote: > > Fundamentally. skbuffs are single physically linear blocks, BSD mbufs are > > chains of small blocks. The BSD code nowdays makes heavy use of "mbuf > > clusters" to effectively get linear buffers most of the time. > > > > Having chains means you keep having to say 'is the rest of this structure > > in this buffer' and 'copy this around a bit to make the structure in one > > buffer'. > > So all this talk of zero-copy file serving, scatter gather DMA and so on > would require some kind of mbuf abstraction?
There are several cards which can deal with sending a packet split in two buffers.
Ralf
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