Re: [libvirt] [PATCH v2] qemu: handle multicast overflow on macvtap NIC_RX_FILTER_CHANGED

On 11/30/18 6:50 PM, Jason Baron wrote: > Guest network devices can set 'overflow' when there are a number of multicast > ips configured. For virtio_net, the limit is only 64. In this case, the list > of mac addresses is empty and the 'overflow' condition is set. Thus, the guest > will currently receive no multicast traffic in this state. > > When 'overflow' is set in the guest, let's turn this into ALLMULTI on the host. > > Signed-off-by: Jason Baron <jbaron(a)akamai.com&gt; > --- > v1->v2: > 1. check for < 0 in virNetDevSetRcvAllMulti() (Michal Privoznik) > 2. restrict overflow check to VIR_NETDEV_RX_FILTER_MODE_NORMAL mode as to > avoid unnecessarily calling rx filter updates for other modes > 3. update virNetDevSetRcvAllMulti() call to use guestFilter->multicast.overflow > directly (Michal Privoznik) > > src/qemu/qemu_driver.c | 22 +++++++++++++++------- > 1 file changed, 15 insertions(+), 7 deletions(-) ACK