On Thu, Dec 08, 2016 at 02:17:02PM -0500, David Miller wrote: > From: John Fastabend <john.fastab...@gmail.com> > Date: Wed, 07 Dec 2016 12:10:47 -0800 > > > This implements virtio_net for the mergeable buffers and big_packet > > modes. I tested this with vhost_net running on qemu and did not see > > any issues. For testing num_buf > 1 I added a hack to vhost driver > > to only but 100 bytes per buffer. > ... > > So where are we with this? > > I'm not too thrilled with the idea of making XDP_TX optional or > something like that. If someone enables XDP, there is a tradeoff.
The issue is inability of XDP TX to share xmit queues with net stack. I'm guessing virtio is not the only card that has a limited number of queues, is it? Is it really so hard to lock the queue and check it's running? Could be optional in case resources are there ... -- MST
