WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

[Xen-devel] Network drop on domU (netfront: rx->offset: 0, size: 4294967

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] Network drop on domU (netfront: rx->offset: 0, size: 4294967295)
From: M A Young <m.a.young@xxxxxxxxxxxx>
Date: Thu, 28 May 2009 23:02:10 +0100 (BST)
Delivery-date: Thu, 28 May 2009 15:02:59 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Alpine 2.00 (LFD 1167 2008-08-23)
I have started to see this error as well now on a Fedora Rawhide + xen-tip/next dom0 kernel on Fedora 11 and a Fedora 11 domU. The base system has just been reinstalled and used to be running Fedora 8 dom0, the domU machine hasn't changed. This is on a fairly old machine with 512M memory shared between the two instances.

/var/log/messages is packed with errors like
net eth0: rx->offset: 0, size: 4294967295
with the more occasional
__ratelimit: 25 callbacks suppressed
about every 10 lines, while updating some packages using rpm where the packages are on an NFS mount, which is maybe running at 1/10th or less the speed than I would expect. The network setup on dom0 is

bridge name     bridge id               STP enabled     interfaces
eth0            8000.0011110a766f       no              peth0
                                                        vif4.0

with only a handful of dropped packets on vif4.0
vif4.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
          UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
          RX packets:524716 errors:0 dropped:0 overruns:0 frame:0
          TX packets:658136 errors:0 dropped:39 overruns:0 carrier:0
          collisions:0 txqueuelen:32
          RX bytes:36703881 (35.0 MiB)  TX bytes:862875521 (822.9 MiB)

On domU however ifconfig reports
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:567462 errors:73814 dropped:0 overruns:0 frame:0
          TX packets:511318 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:719940314 (686.5 MiB)  TX bytes:42982009 (40.9 MiB)
          Interrupt:9

I tried enabling debugging in drivers/xen/netback/netback.c by setting
#define NETBE_DEBUG_INTERRUPT
but when I try to build the kernel I get the error
drivers/xen/blkback/xenbus.c: In function 'blkif_xenbus_init':
drivers/xen/blkback/xenbus.c:541: warning: ignoring return value of 'xenbus_register_backend', declared with attribute warn_unused_result
drivers/xen/netback/netback.c: In function 'netback_init':
drivers/xen/netback/netback.c:1503: error: 'SA_SHIRQ' undeclared (first use in this function) drivers/xen/netback/netback.c:1503: error: (Each undeclared identifier is reported only once drivers/xen/netback/netback.c:1503: error: for each function it appears in.) drivers/xen/netback/netback.c:1505: warning: passing argument 3 of 'bind_virq_to_irqhandler' from incompatible pointer type

        Michael Young

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel