From: Tiwei Bie <tiwei.bie@intel.com>
Date: Tue, 23 Oct 2018 06:07:49 +0000 (+0800)
Subject: vhost: fix vector filling for packed ring
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=16b9e38e74147fb004fa112c055b2fd500403b36;p=dpdk.git

vhost: fix vector filling for packed ring

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: stable@dpdk.org

Signed-off-by: Tiwei Bie <tiwei.bie@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---

diff --git a/lib/librte_vhost/virtio_net.c b/lib/librte_vhost/virtio_net.c
index f8794ee198..1c31c05625 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))