From: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
To: Chris Friesen <cfriesen@nortel.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>, netdev@vger.kernel.org
Subject: Re: jumbo frames and memory fragmentation
Date: Fri, 30 Jun 2006 22:48:21 +0400 [thread overview]
Message-ID: <20060630184820.GA9558@2ka.mipt.ru> (raw)
In-Reply-To: <44A56520.5010703@nortel.com>
On Fri, Jun 30, 2006 at 11:53:36AM -0600, Chris Friesen (cfriesen@nortel.com) wrote:
> >Either upgrade your kernel or backport the page-splitting code in the
> >current tree. That's really the only sane solution for jumbo packets.
>
> Looking at the page-splitting code, it says "82571 and greater support
> packet-split...". We're running the 82546GB device. Looks like it
> won't help me.
It definitely will.
Packet split in hardware means separating data and headers into
different pages in different reads, while software page split means that
skb has a list of fragments where part of the packet will be DMAed, so
jumbo frame will be converted into several pages.
--
Evgeniy Polyakov
next prev parent reply other threads:[~2006-06-30 18:48 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-29 18:54 jumbo frames and memory fragmentation Chris Friesen
2006-06-30 13:01 ` Herbert Xu
2006-06-30 17:53 ` Chris Friesen
2006-06-30 18:48 ` Evgeniy Polyakov [this message]
2006-06-30 23:35 ` Chris Friesen
2006-07-01 0:04 ` Jesse Brandeburg
2006-07-08 22:25 ` Evgeniy Polyakov
2006-07-13 12:13 ` Herbert Xu
2006-07-17 17:16 ` Chris Friesen
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