[dpdk-dev] [PATCH v6 06/15] vhost: clear batch copy index at copy time

[Maxime Coquelin]

Signed-off-by: Maxime Coquelin <maxime.coque...@redhat.com>
---
 lib/librte_vhost/virtio_net.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/lib/librte_vhost/virtio_net.c b/lib/librte_vhost/virtio_net.c
index 5cfc100a9..816d5fc1d 100644
--- a/lib/librte_vhost/virtio_net.c
+++ b/lib/librte_vhost/virtio_net.c
@@ -141,6 +141,8 @@ do_data_copy_enqueue(struct virtio_net *dev, struct 
vhost_virtqueue *vq)
                vhost_log_cache_write(dev, vq, elem[i].log_addr, elem[i].len);
                PRINT_PACKET(dev, (uintptr_t)elem[i].dst, elem[i].len, 0);
        }
+
+       vq->batch_copy_nb_elems = 0;
 }
 
 static inline void
@@ -152,6 +154,8 @@ do_data_copy_dequeue(struct vhost_virtqueue *vq)
 
        for (i = 0; i < count; i++)
                rte_memcpy(elem[i].dst, elem[i].src, elem[i].len);
+
+       vq->batch_copy_nb_elems = 0;
 }
 
 /* avoid write operation when necessary, to lessen cache issues */
@@ -558,8 +562,6 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id,
        if (count == 0)
                goto out;
 
-       vq->batch_copy_nb_elems = 0;
-
        rte_prefetch0(&vq->avail->ring[vq->last_avail_idx & (vq->size - 1)]);
 
        avail_head = *((volatile uint16_t *)&vq->avail->idx);
@@ -1047,8 +1049,6 @@ rte_vhost_dequeue_burst(int vid, uint16_t queue_id,
        if (unlikely(vq->enabled == 0))
                goto out_access_unlock;
 
-       vq->batch_copy_nb_elems = 0;
-
        if (dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM))
                vhost_user_iotlb_rd_lock(vq);
 
-- 
2.14.4