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Some older systems, e.g. RHEL-6 do not have IFF_MULTI_QUEUE flag which we use to enable multiqueue feature. Therefore one gets the following compile error there: CC util/libvirt_util_la-virnetdevmacvlan.lo util/virnetdevmacvlan.c: In function 'virNetDevMacVLanTapSetup': util/virnetdevmacvlan.c:338: error: 'IFF_MULTI_QUEUE' undeclared (first use in this function) util/virnetdevmacvlan.c:338: error: (Each undeclared identifier is reported only once util/virnetdevmacvlan.c:338: error: for each function it appears in.) make[3]: *** [util/libvirt_util_la-virnetdevmacvlan.lo] Error 1 So, whenever user wants us to enable the feature on such systems, we will just throw a runtime error instead. Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
LibVirt : simple API for virtualization
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.
Daniel Veillard <veillard@redhat.com>