[dpdk-dev] [PATCH v2 18/24] virtio: Fix descriptor index issue

[Ouyang Changchun]

It should use vring descriptor index instead of used_ring index to index 
vq_descx.

Signed-off-by: Changchun Ouyang <changchun.ouyang at intel.com>
---
 lib/librte_pmd_virtio/virtio_rxtx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/librte_pmd_virtio/virtio_rxtx.c 
b/lib/librte_pmd_virtio/virtio_rxtx.c
index 580701a..a82e8eb 100644
--- a/lib/librte_pmd_virtio/virtio_rxtx.c
+++ b/lib/librte_pmd_virtio/virtio_rxtx.c
@@ -144,9 +144,9 @@ virtio_xmit_cleanup(struct virtqueue *vq, uint16_t num)

                used_idx = (uint16_t)(vq->vq_used_cons_idx & (vq->vq_nentries - 
1));
                uep = &vq->vq_ring.used->ring[used_idx];
-               dxp = &vq->vq_descx[used_idx];

                desc_idx = (uint16_t) uep->id;
+               dxp = &vq->vq_descx[desc_idx];
                vq->vq_used_cons_idx++;
                vq_ring_free_chain(vq, desc_idx);

-- 
1.8.4.2