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Re: [libvirt] [PATCH 2/5] macvtap support for libvirt -- parse new interface XML




"Daniel P. Berrange" <berrange redhat com> wrote on 02/08/2010 11:59:52 AM:

>
> Please respond to "Daniel P. Berrange"

>
> On Thu, Feb 04, 2010 at 08:02:42AM -0500, Stefan Berger wrote:
> > This part adds support to domain_conf.{c|h} for parsing the new
> > interface XML of type 'direct'.
> >
> > Signed-off-by: Stefan Berger <stefanb us ibm com>
>
> > Index: libvirt-macvtap/src/conf/domain_conf.c
> > ===================================================================
> > --- libvirt-macvtap.orig/src/conf/domain_conf.c
> > +++ libvirt-macvtap/src/conf/domain_conf.c
> > @@ -41,6 +41,7 @@
> >  #include "c-ctype.h"
> >  #include "logging.h"
> >  #include "network.h"
> > +#include "macvtap.h"
> >  
> >  #define VIR_FROM_THIS VIR_FROM_DOMAIN
> >  
> > @@ -140,7 +141,8 @@ VIR_ENUM_IMPL(virDomainNet, VIR_DOMAIN_N
> >                "mcast",
> >                "network",
> >                "bridge",
> > -              "internal")
> > +              "internal",
> > +              "direct")
> >  
> >  VIR_ENUM_IMPL(virDomainChrTarget, VIR_DOMAIN_CHR_TARGET_TYPE_LAST,
> >                "null",
> > @@ -222,6 +224,12 @@ VIR_ENUM_IMPL(virDomainSeclabel, VIR_DOM
> >                "dynamic",
> >                "static")
> >  
> > +VIR_ENUM_IMPL(virDomainNetdevMacvtap, VIR_DOMAIN_NETDEV_MACVTAP_MODE_LAST,
> > +              MACVTAP_MODE_PRIVATE_STR,
> > +              MACVTAP_MODE_VEPA_STR,
> > +              MACVTAP_MODE_BRIDGE_STR)
>
> These strings should really be included here directly - other areas
> of the code should only ever see the parsed enum integer value, never
> the string form which is for the XML only.


Ok. The reason why I did not use the returned 'int's is because the translated value will be passed to the driver and linux/if_link.h unfortunately defines those as follows:

enum macvlan_mode {
        MACVLAN_MODE_PRIVATE = 1,
        MACVLAN_MODE_VEPA    = 2,
        MACVLAN_MODE_BRIDGE  = 4,
};

Should I use those values in the array and fill the 0 and 3 with dummy values or have another function that translates the ones returned by the XYZTypeFromString() call in the actual 'enum macvlan_mode'?

   Stefan

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