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 408bba2..2702e12 100644 (file)
--- 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;
 }