[libvirt] [PATCH 1/1] Fix adding ports to OVS bridges without VLAN tags

[Eric Blake]

On 08/30/2012 11:53 AM, Kyle Mestery wrote:
> The introduction of the new VLAN code, along with the fix
> from 5e465df6be8bcb00f0b4bff831e91f4042fae272, caused the
> addition of OVS ports to fail with the following message:
> 
> ovs-vsctl: 00002|vsctl|ERR|: missing column name
> 
> This fix takes into account the VLAN arguments are optional,
> and correctly sets up the command line to run the "ovs-vsctl"
> command to add ports to the OVS bridge.
> 
> Signed-off-by: Kyle Mestery <kmestery at cisco.com>
> ---
>  src/util/virnetdevopenvswitch.c | 13 +++++++++----
>  1 file changed, 9 insertions(+), 4 deletions(-)
> 
> diff --git a/src/util/virnetdevopenvswitch.c b/src/util/virnetdevopenvswitch.c
> index 00271a0..fcf6d91 100644
> --- a/src/util/virnetdevopenvswitch.c
> +++ b/src/util/virnetdevopenvswitch.c
> @@ -104,9 +104,15 @@ int virNetDevOpenvswitchAddPort(const char *brname, const char *ifname,
>      }
>  

> +    if (virBufferCurrentContent(&buf) != "")

Won't work.  The address of "" is not constant.  Instead, you want to
probe virBufferUse() for being non-zero.

-- 
Eric Blake   eblake at redhat.com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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