From: Tomasz Kulasek <tomaszx.kulasek@intel.com>
Date: Fri, 9 Feb 2018 17:28:00 +0000 (+0100)
Subject: vhost: fix ring index returned to master on stop
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=90bb22a197abb41795cc9946e57af9d4f9395970;p=dpdk.git

vhost: fix ring index returned to master on stop

According to the "Vhost-user Protocol" document,
VHOST_USER_GET_VRING_BASE should get the available vring base offset.

Fixes: 8f972312b8f4 ("vhost: support vhost-user")
Cc: stable@dpdk.org

Signed-off-by: Pawel Wodkowski <pawelx.wodkowski@intel.com>
Signed-off-by: Tomasz Kulasek <tomaszx.kulasek@intel.com>
Reviewed-by: Jianfeng Tan <jianfeng.tan@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---

diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
index 4b4b7570bf..5c53610663 100644
--- a/lib/librte_vhost/vhost_user.c
+++ b/lib/librte_vhost/vhost_user.c
@@ -942,8 +942,8 @@ vhost_user_get_vring_base(struct virtio_net *dev,
 
 	dev->flags &= ~VIRTIO_DEV_READY;
 
-	/* Here we are safe to get the last used index */
-	msg->payload.state.num = vq->last_used_idx;
+	/* Here we are safe to get the last avail index */
+	msg->payload.state.num = vq->last_avail_idx;
 
 	RTE_LOG(INFO, VHOST_CONFIG,
 		"vring base idx:%d file:%d\n", msg->payload.state.index,