search for: macvtap

Thanks much sir Ease I think mainly adding a macvtap is pretty quick, performant and works. And last but definitely not least, ignorance of other quick easy solutions. Well, also macvtap works on older hardware where I don't have physical functions to passthrough via sr-iov, that is what you are pointing to with "macvtaps in the most outer o...

I am running OpenStack inside a libvirt guest that is connected to the local network via a macvtap interface. My experience so far suggests that a macvtap interface will not pass traffic with a source MAC address other than the MAC address of the interface itself...for example, if inside the guest eth0 is attached to a bridge. Is that correct, or is there some setting that will make that work?...

It was reported that the macvtap device selects a different vhost (when used with multiqueue feature) for incoming packets of a single connection. Use packet hash first. Patch tested on MQ virtio_net. Signed-off-by: Krishna Kumar <krkumar2 at in.ibm.com> --- drivers/net/macvtap.c | 16 ++++++++-------- 1 file changed, 8...

It was reported that the macvtap device selects a different vhost (when used with multiqueue feature) for incoming packets of a single connection. Use packet hash first. Patch tested on MQ virtio_net. Signed-off-by: Krishna Kumar <krkumar2 at in.ibm.com> --- drivers/net/macvtap.c | 16 ++++++++-------- 1 file changed, 8...

Hello all, hope all is well this maybe outside of libvirt-users.... Can you nest macvtap devices to ultimately receive a real routable ip on the nested vm? I have a nested vm up and running. Both vm and nested vm are centos 7 on arch linux host. The first vm uses a macvtap in bridge mode receives dhcp from an external dhcp server. I start the second vm and dhclient hangs and never rec...

Thanks again very much sir Will definitely try this path and report back On Mon, Jul 11, 2016 at 11:59 AM, Michal Privoznik <mprivozn@redhat.com> wrote: > On 11.07.2016 17:46, jsl6uy js16uy wrote: > > Thanks much sir > > Ease I think mainly > > adding a macvtap is pretty quick, performant and works. And last but > > definitely not least, ignorance of other quick easy solutions. > > Well, also macvtap works on older hardware where I don't have physical > > functions to passthrough via sr-iov, that is what you are pointing to > with...

On Thu, May 14, 2020 at 1:32 PM Laine Stump <laine@redhat.com> wrote: > On 5/13/20 12:52 AM, Subhendu Ghosh wrote: > > Hi > > > > Couple of questions around macvtap direct usage: > > > > 1) is the document here current? > > https://libvirt.org/formatnetwork.html#examplesDirect > > Yes. None of that has changed in any major way in many years. > kernelNewbies documents mactap bridge as VMs can host can all talk to each other without a...

...municate. > > Based on original work from Ben Hutchings. > > Fixes: 88e0e0e5aa7a ("drivers/net: Disable UFO through virtio") > CC: Ben Hutchings <ben at decadent.org.uk> > Signed-off-by: Vladislav Yasevich <vyasevic at redhat.com> > --- > drivers/net/macvtap.c | 20 ++++++++++++++------ > 1 file changed, 14 insertions(+), 6 deletions(-) > > diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c > index 880cc09..75febd4 100644 > --- a/drivers/net/macvtap.c > +++ b/drivers/net/macvtap.c > @@ -66,7 +66,7 @@ static struct cdev mac...

...municate. > > Based on original work from Ben Hutchings. > > Fixes: 88e0e0e5aa7a ("drivers/net: Disable UFO through virtio") > CC: Ben Hutchings <ben at decadent.org.uk> > Signed-off-by: Vladislav Yasevich <vyasevic at redhat.com> > --- > drivers/net/macvtap.c | 20 ++++++++++++++------ > 1 file changed, 14 insertions(+), 6 deletions(-) > > diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c > index 880cc09..75febd4 100644 > --- a/drivers/net/macvtap.c > +++ b/drivers/net/macvtap.c > @@ -66,7 +66,7 @@ static struct cdev mac...

...> To save myself from configuring all VLANs on the KVM host, I'd like to > > hand the entire ethernet link to the VM and to have the VLAN interfaces > > there. Using classical Linux bridges (brctl), things work fine. > > When I asked the person I go to with questions about macvtap (because he > knows the internals), his response was "if a Linux host bridge works, then > he should use that". In other words, he was skeptical that what you want to > do could be made to work with macvtap. I see. A Linux host bridge is what I build with brctl? > Is there...

On 04/30/2015 11:18 AM, Laine Stump wrote: > On 04/30/2015 10:26 AM, Lars Kellogg-Stedman wrote: >> I am running OpenStack inside a libvirt guest that is connected to the >> local network via a macvtap interface. My experience so far suggests >> that a macvtap interface will not pass traffic with a source MAC >> address other than the MAC address of the interface itself...for >> example, if inside the guest eth0 is attached to a bridge. >> >> Is that correct, or is...

...Hutchings. > >> > >> Fixes: 88e0e0e5aa7a ("drivers/net: Disable UFO through virtio") > >> CC: Ben Hutchings <ben at decadent.org.uk> > >> Signed-off-by: Vladislav Yasevich <vyasevic at redhat.com> > >> --- > >> drivers/net/macvtap.c | 20 ++++++++++++++------ > >> 1 file changed, 14 insertions(+), 6 deletions(-) > >> > >> diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c > >> index 880cc09..75febd4 100644 > >> --- a/drivers/net/macvtap.c > >> +++ b/drivers/net/ma...

...Hutchings. > >> > >> Fixes: 88e0e0e5aa7a ("drivers/net: Disable UFO through virtio") > >> CC: Ben Hutchings <ben at decadent.org.uk> > >> Signed-off-by: Vladislav Yasevich <vyasevic at redhat.com> > >> --- > >> drivers/net/macvtap.c | 20 ++++++++++++++------ > >> 1 file changed, 14 insertions(+), 6 deletions(-) > >> > >> diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c > >> index 880cc09..75febd4 100644 > >> --- a/drivers/net/macvtap.c > >> +++ b/drivers/net/ma...

Hi Couple of questions around macvtap direct usage: 1) is the document here current? https://libvirt.org/formatnetwork.html#examplesDirect I have been able to get host to guest network traffic without any special configuration or switch since Fedora 28 when I first started using it. Using <forward mode=vepa> requires switch por...

...0, Vlad Yasevich wrote: > >> On 05/01/2018 11:24 PM, Michael S. Tsirkin wrote: > >>> On Tue, May 01, 2018 at 10:07:38PM -0400, Vladislav Yasevich wrote: > >>>> Since we now have support for software CRC32c offload, turn it on > >>>> for macvlan and macvtap devices so that guests can take advantage > >>>> of offload SCTP checksums to the host or host hardware. > >>>> > >>>> Signed-off-by: Vladislav Yasevich <vyasevic at redhat.com> > >>>> --- > >>>> drivers/net/macvlan.c...

...sed on original work from Ben Hutchings. >> >> Fixes: 88e0e0e5aa7a ("drivers/net: Disable UFO through virtio") >> CC: Ben Hutchings <ben at decadent.org.uk> >> Signed-off-by: Vladislav Yasevich <vyasevic at redhat.com> >> --- >> drivers/net/macvtap.c | 20 ++++++++++++++------ >> 1 file changed, 14 insertions(+), 6 deletions(-) >> >> diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c >> index 880cc09..75febd4 100644 >> --- a/drivers/net/macvtap.c >> +++ b/drivers/net/macvtap.c >> @@ -66,7 +66,...

...sed on original work from Ben Hutchings. >> >> Fixes: 88e0e0e5aa7a ("drivers/net: Disable UFO through virtio") >> CC: Ben Hutchings <ben at decadent.org.uk> >> Signed-off-by: Vladislav Yasevich <vyasevic at redhat.com> >> --- >> drivers/net/macvtap.c | 20 ++++++++++++++------ >> 1 file changed, 14 insertions(+), 6 deletions(-) >> >> diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c >> index 880cc09..75febd4 100644 >> --- a/drivers/net/macvtap.c >> +++ b/drivers/net/macvtap.c >> @@ -66,7 +66,...

...myself from configuring all VLANs on the KVM host, I'd like to >>> hand the entire ethernet link to the VM and to have the VLAN interfaces >>> there. Using classical Linux bridges (brctl), things work fine. >> >> When I asked the person I go to with questions about macvtap (because he >> knows the internals), his response was "if a Linux host bridge works, then >> he should use that". In other words, he was skeptical that what you want to >> do could be made to work with macvtap. > > I see. > > A Linux host bridge is what I b...

On 4/6/20 9:54 AM, Daniel P. Berrangé wrote: > On Mon, Apr 06, 2020 at 03:47:01PM +0200, Miguel Duarte de Mora Barroso wrote: >> Hi all, >> >> I'm aware that it is possible to plug pre-created macvtap devices to >> libvirt guests - tracked in RFE [0]. >> >> My interpretation of the wording in [1] and [2] is that it is also >> possible to plug pre-created tap devices into libvirt guests - that >> would be a requirement to allow kubevirt to run with less capabilities...

Hi there. I have configured kvm domain (rhel6.4) with ethernet bridged over macvtap, and found no filtration applied except mac. 'virsh' just silently ignoring attributes 'filterref' and 'ip address' in different formats. No error on validate stage. Config examples: ... <interface type='direct'> <mac address='52:54:00:31:ae:1...