Hi,
On 7/8/21 12:25 PM, Cheng Jiang wrote:
> We assume that in the sync path, if there is no buffer wrap in the
> avail descriptors fetched in a batch, there is no buffer wrap in the
> used descriptors which need to be written back in this batch, but
> this assumption is wrong in the async path since there are inflight
> descriptors which are processed by the DMA device.
>
> This patch refactors the batch copy code and adds used ring buffer
> wrap check as a batch copy condition to fix this issue.
>
> Fixes: 873e8dad6f49 ("vhost: support packed ring in async datapath")
> Cc: sta...@dpdk.org
>
> Signed-off-by: Cheng Jiang <cheng1.ji...@intel.com>
> ---
> lib/vhost/virtio_net.c | 163 ++++++++++++++++++++++++++++++++---------
> 1 file changed, 128 insertions(+), 35 deletions(-)
>
Reviewed-by: Maxime Coquelin <maxime.coque...@redhat.com>
Thanks,
Maxime
