Bug 427873 - Checksum offloading and IP connection tracking don't play well together
Summary: Checksum offloading and IP connection tracking don't play well together
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel-xen
Version: 5.1
Hardware: All
OS: Linux
low
low
Target Milestone: rc
: ---
Assignee: Don Dutile (Red Hat)
QA Contact: Martin Jenner
URL:
Whiteboard:
Depends On: 414131
Blocks:
TreeView+ depends on / blocked
 
Reported: 2008-01-07 23:11 UTC by Don Dutile (Red Hat)
Modified: 2008-02-27 05:13 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2008-02-27 05:13:00 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)

Description Don Dutile (Red Hat) 2008-01-07 23:11:29 UTC
+++ This bug was initially created as a clone of Bug #414131 +++

With the 2.6.9-67.EL xenU kernel I am unable to ssh into the guest if the
firewall is enabled. I have confirmed that SSH is being allowed through by the
firewall. sshd forks a new process to recieve the connection but this then waits
forever for more data.

If I "service iptables stop" within the guest then all works OK. 

I believe this is fixed by
http://hg.uk.xensource.com/xen-unstable.hg?cs=36d020268c6c

-- Additional comment from ijc.uk on 2007-12-06 10:33 EST --
Created an attachment (id=279791)
backported version of 157:36d020268c6c

I had to munge 157:36d020268c6c to get it to apply, the version I ended up with
is attached.

Alternatively there are a handful of prior patches that rework the GSO vs. TSO
setup in netfront.c which you could pull in that would probably make 157 apply
ok.

-- Additional comment from ddutile on 2008-01-07 18:01 EST --
This only fails if ssh'ing from another (any) domU to the 2.6.9-67.EL xenU/domU
on the same local machine.
ssh-ing from dom0 works; ssh-ing from another remote machine works also.

Comment 1 Chris Lalancette 2008-02-27 04:27:01 UTC
Don,
     I think you mentioned that this ended up being just a bug in the RHEL-4 PV
kernel, and not in the RHEL-5 PV kernel.  Assuming that is the case, can you
close this bug out?

Thanks,
Chris Lalancette

Comment 2 Don Dutile (Red Hat) 2008-02-27 05:13:00 UTC
Correct, it's only in rhel4-xenU.
thought I closed this bz.... will do so now...



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