From: Marvin Liu <yong.liu@intel.com>
Date: Fri, 15 May 2020 02:35:07 +0000 (+0800)
Subject: net/virtio: fix unexpected event after reconnect
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=f50560a54b8bd6b52d763213aee40f0164fb4099;p=dpdk.git

net/virtio: fix unexpected event after reconnect

Event notification should be disabled after virtqueue initialization and
enabled by calling rte_eth_dev_rx_intr_enable later. When virtio user
device reconnecting to vhost, virtqueue_disable_intr should be called to
disable event notification.

Fixes: 6ebbf4109f35 ("net/virtio-user: fix packed ring server mode")
Cc: stable@dpdk.org

Signed-off-by: Marvin Liu <yong.liu@intel.com>
Acked-by: Xiao Wang <xiao.w.wang@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---

diff --git a/drivers/net/virtio/virtqueue.c b/drivers/net/virtio/virtqueue.c
index 408bba236a..2702e120ee 100644
--- a/drivers/net/virtio/virtqueue.c
+++ b/drivers/net/virtio/virtqueue.c
@@ -175,6 +175,7 @@ virtqueue_rxvq_reset_packed(struct virtqueue *vq)
 
 	vring_desc_init_packed(vq, size);
 
+	virtqueue_disable_intr(vq);
 	return 0;
 }
 
@@ -211,5 +212,6 @@ virtqueue_txvq_reset_packed(struct virtqueue *vq)
 
 	vring_desc_init_packed(vq, size);
 
+	virtqueue_disable_intr(vq);
 	return 0;
 }