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Michael, Would you please give an example or two how these two flags DESC_DRIVER and DESC_WRAP are used together? Like others, I am confused by the description and still don?t quite grok it. Steven On 9/25/17, 3:24 PM, "virtio-dev at lists.oasis-open.org on behalf of Michael S. Tsirkin" <virtio-dev at lists.oasis-open.org on behalf of mst at redhat.com> wrote: On Wed, Sep

...t to change. Now driver sees that DRIVER bit has been cleared, so it nows that id is valid. I sees id 1, therefore id 0 and 1 has been read and are safe to overwrite. So it writes it out. It wrapped around to beginning of ring, so it flips the WRAP bit to 0 on all descriptors now: DESC[0].addr = 9ABC DESC[0].id = 0 DESC[0].flags = DESC_DRIVER | DESC_NEXT DESC[0].addr = DEF0 DESC[0].id = 1 DESC[0].flags = DESC_DRIVER Next round wrap will be 1 again. To summarise: DRIVER bit is used by driver to detect device has used one or more descriptors. WRAP is is used by device to detect driver has...

Hi! For my network setup I need the following commands: sysctl -w net.ipv6.conf.all.proxy_ndp=1 ip -6 neigh add proxy 1234:5678:9abc:def0::2 dev eth2 The first command goes to /etc/sysctl.conf to enable it after a reboot. But where do I put the "ip -6 neigh add proxy"? Best regards Franz

...that DRIVER bit has been cleared, so it nows that id is valid. I > sees id 1, therefore id 0 and 1 has been read and are safe to overwrite. > > So it writes it out. It wrapped around to beginning of ring, so it flips the > WRAP bit to 0 on all descriptors now: > > DESC[0].addr = 9ABC > DESC[0].id = 0 > DESC[0].flags = DESC_DRIVER | DESC_NEXT > > > DESC[0].addr = DEF0 > DESC[0].id = 1 > DESC[0].flags = DESC_DRIVER > > > Next round wrap will be 1 again. > > > To summarise: > > DRIVER bit is used by driver to detect device has us...

...that DRIVER bit has been cleared, so it nows that id is valid. I > sees id 1, therefore id 0 and 1 has been read and are safe to overwrite. > > So it writes it out. It wrapped around to beginning of ring, so it flips the > WRAP bit to 0 on all descriptors now: > > DESC[0].addr = 9ABC > DESC[0].id = 0 > DESC[0].flags = DESC_DRIVER | DESC_NEXT > > > DESC[0].addr = DEF0 > DESC[0].id = 1 > DESC[0].flags = DESC_DRIVER > > > Next round wrap will be 1 again. > > > To summarise: > > DRIVER bit is used by driver to detect device has us...

...ed, so it nows that id is valid. I > > sees id 1, therefore id 0 and 1 has been read and are safe to overwrite. > > > > So it writes it out. It wrapped around to beginning of ring, so it flips the > > WRAP bit to 0 on all descriptors now: > > > > DESC[0].addr = 9ABC > > DESC[0].id = 0 > > DESC[0].flags = DESC_DRIVER | DESC_NEXT > > > > > > DESC[0].addr = DEF0 > > DESC[0].id = 1 > > DESC[0].flags = DESC_DRIVER > > > > > > Next round wrap will be 1 again. > > > > > > To summarise...

On Wed, Sep 20, 2017 at 09:11:57AM +0000, Liang, Cunming wrote: > Hi Michael, > > > -----Original Message----- > > From: virtio-dev at lists.oasis-open.org [mailto:virtio-dev at lists.oasis-open.org] > > On Behalf Of Michael S. Tsirkin > > Sent: Sunday, September 10, 2017 1:06 PM > > To: virtio-dev at lists.oasis-open.org > > Cc: virtualization at

On Wed, Sep 20, 2017 at 09:11:57AM +0000, Liang, Cunming wrote: > Hi Michael, > > > -----Original Message----- > > From: virtio-dev at lists.oasis-open.org [mailto:virtio-dev at lists.oasis-open.org] > > On Behalf Of Michael S. Tsirkin > > Sent: Sunday, September 10, 2017 1:06 PM > > To: virtio-dev at lists.oasis-open.org > > Cc: virtualization at