[ovs-dev] Q on userspace OVS

Ravi.Kerur at telekom.com Ravi.Kerur at telekom.com
Thu Feb 9 16:41:33 PST 2012


Thanks Ben. 

-----Original Message-----
From: Ben Pfaff [mailto:blp at nicira.com] 
Sent: Thursday, February 09, 2012 4:17 PM
To: Kerur, Ravi
Cc: dev at openvswitch.org
Subject: Re: [ovs-dev] Q on userspace OVS

OK.  Nothing special then.

It could be that the userspace datapath simply doesn't work in the latest version of OVS.  We don't test it very often, and this wouldn't be the first time that a bug had crept it.  It does get some exposure in the unit tests, but the unit tests necessarily can't test the actual use with real system devices, so it's not a high-quality test.

Is there a particular reason you want to use the userspace datapath?
The kernel datapath is far more important.

Thanks,

Ben.

On Thu, Feb 09, 2012 at 09:32:28PM +0100, Ravi.Kerur at telekom.com wrote:
> It has eth0. I am trying simple ping and ARP doesn't get resolved. 
> Didn't see ARP requests going out via tcpdump capture. I see following 
> message with dmesg | tail after ping started, didn't capture this 
> before. Will look into what this msg corresponds to, if this is a 
> known issue please let me know
> 
> [  286.718153] Loading kernel module for a network device with 
> CAP_SYS_MODULE (deprecated).  Use CAP_NET_ADMIN and alias netdev-tun 
> instead root at rkerur-ThinkPad-T400:~#
> 
> root at rkerur-ThinkPad-T400:~# ovs-vsctl list-ports br0 eth0
> 
> root at rkerur-ThinkPad-T400:~# arp -n
> Address                  HWtype  HWaddress           Flags Mask            Iface
> 10.117.46.193                    (incomplete)        br0
> 
> root at rkerur-ThinkPad-T400:~# route -n
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
> 10.117.46.192   0.0.0.0         255.255.255.240 U     0      0        0 br0
> 192.168.10.0    0.0.0.0         255.255.255.0   U     2      0        0 wlan0
> root at rkerur-ThinkPad-T400:~#
> 
> Thanks
> Ravi
> 
> -----Original Message-----
> From: Ben Pfaff [mailto:blp at nicira.com]
> Sent: Thursday, February 09, 2012 11:28 AM
> To: Kerur, Ravi
> Cc: dev at openvswitch.org
> Subject: Re: [ovs-dev] Q on userspace OVS
> 
> On Thu, Feb 09, 2012 at 08:02:39PM +0100, Ravi.Kerur at telekom.com wrote:
> > I am testing userspace OVS and having trouble getting this to work. 
> > I have executed steps for building and installing except insmod and 
> > added "ovs-vsctl set bridge br0 datapath_type=netdev". Any 
> > additional debugs which will help understand why its not working or 
> > have I missed anything? Following are some details...
> 
> What ports are on the bridge?  What traffic is coming in?



More information about the dev mailing list