[dpdk-dev] [PATCH] vhost: fix vector filling for packed ring

[Tiwei Bie]

We should return the length of the buffers described by
the current descriptor chain after filling the buffer
vector. So we need to zero the *len first.

Fixes: 2f3225a7d69b ("vhost: add vector filling support for packed ring")
Cc: sta...@dpdk.org

Signed-off-by: Tiwei Bie <tiwei....@intel.com>
---
 lib/librte_vhost/virtio_net.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/librte_vhost/virtio_net.c b/lib/librte_vhost/virtio_net.c
index 48228f16b..4e6c35d56 100644
--- a/lib/librte_vhost/virtio_net.c
+++ b/lib/librte_vhost/virtio_net.c
@@ -521,6 +521,7 @@ fill_vec_buf_packed(struct virtio_net *dev, struct 
vhost_virtqueue *vq,
                return -1;
 
        *desc_count = 0;
+       *len = 0;
 
        while (1) {
                if (unlikely(vec_id >= BUF_VECTOR_MAX))
-- 
2.19.1