From: Jianfeng Tan <jianfeng.tan@intel.com>
Date: Tue, 23 Jan 2018 09:52:43 +0000 (+0000)
Subject: net/virtio-user: fix crash as features change
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=0d6a8752ac9d1088fed721f81aaa9abbdab53be1;p=dpdk.git

net/virtio-user: fix crash as features change

Since commit 59fe5e17d930 ("vhost: propagate set features handling error"),
vhost does not allow to set different features without reset.

The virtio-user driver fails to reset the device in below commit.

To fix, we send the reset message as stopping the device.

Fixes: c12a26ee209e ("net/virtio-user: fix not properly reset device")
Cc: stable@dpdk.org

Reported-by: Lei Yao <lei.a.yao@intel.com>
Reported-by: Tiwei Bie <tiwei.bie@intel.com>
Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com>
Acked-by: Yuanhan Liu <yliu@fridaylinux.org>
---

diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c b/drivers/net/virtio/virtio_user/virtio_user_dev.c
index 7a70c1867f..3b5f737acf 100644
--- a/drivers/net/virtio/virtio_user/virtio_user_dev.c
+++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c
@@ -142,6 +142,11 @@ int virtio_user_stop_device(struct virtio_user_dev *dev)
 	for (i = 0; i < dev->max_queue_pairs; ++i)
 		dev->ops->enable_qp(dev, i, 0);
 
+	if (dev->ops->send_request(dev, VHOST_USER_RESET_OWNER, NULL) < 0) {
+		PMD_DRV_LOG(INFO, "Failed to reset the device\n");
+		return -1;
+	}
+
 	return 0;
 }