On Wed, Aug 08, 2018 at 05:23:22PM +0200, Maxime Coquelin wrote:
For consistency with Vhost kernel backend, save the wrap
counter value into bit 31 of num's vring state field.
Signed-off-by: Maxime Coquelin <maxime.coque...@redhat.com>
---
lib/librte_vhost/vhost_user.c | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
index a2d4c9ffc..31cfdf163 100644
--- a/lib/librte_vhost/vhost_user.c
+++ b/lib/librte_vhost/vhost_user.c
@@ -648,10 +648,15 @@ static int
vhost_user_set_vring_base(struct virtio_net *dev,
VhostUserMsg *msg)
{
- dev->virtqueue[msg->payload.state.index]->last_used_idx =
- msg->payload.state.num;
- dev->virtqueue[msg->payload.state.index]->last_avail_idx =
- msg->payload.state.num;
+ struct vhost_virtqueue *vq = dev->virtqueue[msg->payload.state.index];
+ if (dev->features & (1ULL << VIRTIO_F_RING_PACKED)) {
+ vq->avail_wrap_counter = msg->payload.state.num >> 31;
+ vq->used_wrap_counter = vq->avail_wrap_counter;
Maybe I don't understand when this is called, but the wrap counters
could have different values, no?
Apart from that:
Reviewed-by: Jens Freimann <jfreim...@redhat.com>
regards,
Jens
