[ovs-discuss] Compile errors on Debian Lenny with Xen

pspreadborough at comcast.net pspreadborough at comcast.net
Sat Dec 5 17:19:31 PST 2009


Thanks Justin,

That works for now.

Cheers,


Pete

----- "Justin Pettit" wrote:

> Thanks for the bug report.  The checksumming code is pretty convoluted
> in Xen, so I'm afraid of rushing out a patch that breaks something in
> subtle ways.  We should have some time to look into a proper fix next
> week, but in the meantime, the patch below will get your kernel to
> compile cleanly.  It will break TCP checksum offloading, so you'll
> need to disable it in your client VMs.  You can do this under Linux
> with the following command:
> 
> 	ethtool -K <dev> tx off
> 
> Obviously, you'll need to replace <dev> with the name of each network
> device (e.g., eth0).
> 
> --Justin
> 
> 
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> 
> diff --git a/datapath/datapath.c b/datapath/datapath.c
> index 2a8fb50..020415c 100644
> --- a/datapath/datapath.c
> +++ b/datapath/datapath.c
> @@ -574,7 +574,8 @@ static int dp_frame_hook(struct net_bridge_port
> *p, struct sk_buff **pskb)
>  #error
>  #endif
>  
> -#if defined(CONFIG_XEN) && defined(HAVE_PROTO_DATA_VALID)
> +/*#if defined(CONFIG_XEN) && defined(HAVE_PROTO_DATA_VALID)*/
> +#if 0
>  /* This code is copied verbatim from net/dev/core.c in Xen's
>   * linux-2.6.18-92.1.10.el5.xs5.0.0.394.644.  We can't call those
> functions
>   * directly because they aren't exported. */
> 
> 
> 
> On Dec 3, 2009, at 12:03 PM, pspreadborough at comcast.net wrote:
> 
> > 
> > Hello,
> > 
> > I'm getting the following errors with the latest git snapshot
> building on 
> > Debian Lenny with Xen:
> > 
> > ./configure --with-l26=/lib/modules/`uname -r`/build CC=gcc-4.1
> > 
> > xen at xenhost:~/openvswitch$ uname -a
> > Linux xenhost 2.6.26-2-xen-686 #1 SMP Wed Nov 4 23:23:33 UTC 2009
> i686 GNU/Linux
> > 
> > 
> > make[3]: Entering directory
> `/home/xen/openvswitch/datapath/linux-2.6'
> > make -C /lib/modules/2.6.26-2-xen-686/build
> M=/home/xen/openvswitch/datapath/linux-2.6 modules
> > make[4]: Entering directory
> `/usr/src/linux-headers-2.6.26-2-xen-686'
> >   CC [M]  /home/xen/openvswitch/datapath/linux-2.6/datapath.o
> > /home/xen/openvswitch/datapath/linux-2.6/datapath.c: In function
> ‘vswitch_skb_checksum_setup’:
> > /home/xen/openvswitch/datapath/linux-2.6/datapath.c:598: error:
> ‘struct sk_buff’ has no member named ‘nh’
> > /home/xen/openvswitch/datapath/linux-2.6/datapath.c:600: error:
> ‘struct sk_buff’ has no member named ‘h’
> > /home/xen/openvswitch/datapath/linux-2.6/datapath.c:600: error:
> ‘struct sk_buff’ has no member named ‘nh’
> > /home/xen/openvswitch/datapath/linux-2.6/datapath.c:600: error:
> ‘struct sk_buff’ has no member named ‘nh’
> > /home/xen/openvswitch/datapath/linux-2.6/datapath.c:601: error:
> ‘struct sk_buff’ has no member named ‘nh’
> > /home/xen/openvswitch/datapath/linux-2.6/datapath.c:612: error:
> ‘struct sk_buff’ has no member named ‘nh’
> > /home/xen/openvswitch/datapath/linux-2.6/datapath.c:615: error:
> ‘struct sk_buff’ has no member named ‘h’
> > /home/xen/openvswitch/datapath/linux-2.6/datapath.c:617: error:
> ‘CHECKSUM_HW’ undeclared (first use in this function)
> > /home/xen/openvswitch/datapath/linux-2.6/datapath.c:617: error:
> (Each undeclared identifier is reported only once
> > /home/xen/openvswitch/datapath/linux-2.6/datapath.c:617: error: for
> each function it appears in.)
> > 
> > Thanks,
> > 
> > Pete
> > 
> > _______________________________________________
> > discuss mailing list
> > discuss at openvswitch.org
> > http://openvswitch.org/mailman/listinfo/discuss_openvswitch.org




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