lkml.org 
[lkml]   [1999]   [Jun]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: zero-copy TCP fileserving
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

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:52    [W:0.135 / U:0.272 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site