From: Ian Campbell <Ian.Campbell@XenSource.com>
To: Jacob Gorm Hansen <jacobg@diku.dk>
Cc: xen-devel <Xen-devel@lists.xensource.com>
Subject: Re: Trouble with TCP between domUs
Date: Thu, 07 Dec 2006 15:52:27 +0000 [thread overview]
Message-ID: <1165506748.9694.179.camel@localhost.localdomain> (raw)
In-Reply-To: <1165505926.22672.19.camel@localhost.localdomain>
On Thu, 2006-12-07 at 16:38 +0100, Jacob Gorm Hansen wrote:
> >From dom0 I can ping and TCP connect to the domain just fine, but from
> the domU the TCP connection hangs after the first few packets. UIP
> complains about missing TCP checksums on the incoming packets,
You can get round that one by writing a feature-no-csum-offload=1 node
in xenstore. netfront.c in the sparse tree does this conditionally in
order to support older Linux kernels that also don't cope well with
missing checksums. With that set dom0 should do checksumming for you.
> but I
> think I am having trouble with MTUs > PAGE_SIZE as well.
I'd have thought that not setting "feature-sg" in xenstore would do that
but I'm not 100% sure.
Perhaps you need to set MTU on vifX.Y in dom0 too?
Ian.
next prev parent reply other threads:[~2006-12-07 15:52 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-07 15:38 Trouble with TCP between domUs Jacob Gorm Hansen
2006-12-07 15:52 ` Ian Campbell [this message]
2006-12-07 16:47 ` David Edmondson
2006-12-08 5:19 ` Herbert Xu
2006-12-08 7:04 ` David Edmondson
2006-12-09 1:13 ` Herbert Xu
2006-12-09 9:13 ` David Edmondson
2006-12-12 2:34 ` Herbert Xu
2006-12-09 9:14 ` David Edmondson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1165506748.9694.179.camel@localhost.localdomain \
--to=ian.campbell@xensource.com \
--cc=Xen-devel@lists.xensource.com \
--cc=jacobg@diku.dk \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.