The former has been present since commit f43798c27684ab925adde7d8acc34c78c6e50df8 Author: Rusty Russell <rusty(a)rustcorp.com.au&gt; Date: Thu Jul 3 03:48:02 2008 -0700 tun: Allow GSO using virtio_net_hdr and the latter since commit bbb009941efaece3898910a862f6d23aa55d6ba8 Author: Jason Wang <jasowang(a)redhat.com&gt; Date: Wed Oct 31 19:45:59 2012 +0000 tuntap: introduce multiqueue flags these are old enough that they can be assumed present in all Linux platforms we support. The tap device creation code changed is specific to Linux, with a separate impl for non-Linux platforms. Signed-off-by: Daniel P. Berrangé <berrange(a)redhat.com&gt; --- src/util/virnetdevtap.c | 11 +---------- 1 file changed, 1 insertion(+), 10 deletions(-) diff --git a/src/util/virnetdevtap.c b/src/util/virnetdevtap.c index 77c4d1c52c..1738f48a5f 100644 --- a/src/util/virnetdevtap.c +++ b/src/util/virnetdevtap.c @@ -292,20 +292,11 @@ int virNetDevTapCreate(char **ifname, ifr.ifr_flags = IFF_TAP | IFF_NO_PI; /* If tapfdSize is greater than one, request multiqueue */ - if (tapfdSize > 1) { -# ifdef IFF_MULTI_QUEUE + if (tapfdSize > 1) ifr.ifr_flags |= IFF_MULTI_QUEUE; -# else - virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", - _("Multiqueue devices are not supported on this system")); - goto cleanup; -# endif - } -# ifdef IFF_VNET_HDR if (flags & VIR_NETDEV_TAP_CREATE_VNET_HDR) ifr.ifr_flags |= IFF_VNET_HDR; -# endif if (virStrcpyStatic(ifr.ifr_name, *ifname) < 0) { virReportSystemError(ERANGE, -- 2.26.2