Adding an API to get netdev_ops. Avoid to use the netdev_ops directly.

This is prepare for separating the virtio-related funcs.

Signed-off-by: Xuan Zhuo <xuanz...@linux.alibaba.com>
---
 drivers/net/virtio/virtnet.c | 11 ++++++++---
 drivers/net/virtio/virtnet.h |  1 +
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/net/virtio/virtnet.c b/drivers/net/virtio/virtnet.c
index 3f58af7d1550..5f508d9500f3 100644
--- a/drivers/net/virtio/virtnet.c
+++ b/drivers/net/virtio/virtnet.c
@@ -2054,7 +2054,7 @@ static void virtnet_freeze_down(struct virtio_device 
*vdev)
        netif_device_detach(vi->dev);
        netif_tx_unlock_bh(vi->dev);
        if (netif_running(vi->dev))
-               virtnet_close(vi->dev);
+               virtnet_get_netdev()->ndo_stop(vi->dev);
 }
 
 static int init_vqs(struct virtnet_info *vi);
@@ -2073,7 +2073,7 @@ static int virtnet_restore_up(struct virtio_device *vdev)
        enable_delayed_refill(vi);
 
        if (netif_running(vi->dev)) {
-               err = virtnet_open(vi->dev);
+               err = virtnet_get_netdev()->ndo_open(vi->dev);
                if (err)
                        return err;
        }
@@ -2319,6 +2319,11 @@ static const struct net_device_ops virtnet_netdev = {
        .ndo_tx_timeout         = virtnet_tx_timeout,
 };
 
+const struct net_device_ops *virtnet_get_netdev(void)
+{
+       return &virtnet_netdev;
+}
+
 static void virtnet_config_changed_work(struct work_struct *work)
 {
        struct virtnet_info *vi =
@@ -2796,7 +2801,7 @@ static int virtnet_probe(struct virtio_device *vdev)
        /* Set up network device as normal. */
        dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE |
                           IFF_TX_SKB_NO_LINEAR;
-       dev->netdev_ops = &virtnet_netdev;
+       dev->netdev_ops = virtnet_get_netdev();
        dev->features = NETIF_F_HIGHDMA;
 
        dev->ethtool_ops = virtnet_get_ethtool_ops();
diff --git a/drivers/net/virtio/virtnet.h b/drivers/net/virtio/virtnet.h
index 48e0c5ba346a..269ddc386418 100644
--- a/drivers/net/virtio/virtnet.h
+++ b/drivers/net/virtio/virtnet.h
@@ -185,4 +185,5 @@ int virtnet_rx_resize(struct virtnet_info *vi, struct 
virtnet_rq *rq, u32 ring_n
 int virtnet_tx_resize(struct virtnet_info *vi, struct virtnet_sq *sq, u32 
ring_num);
 int _virtnet_set_queues(struct virtnet_info *vi, u16 queue_pairs);
 void virtnet_dev_rx_queue_group(struct virtnet_info *vi, struct net_device 
*dev);
+const struct net_device_ops *virtnet_get_netdev(void);
 #endif
-- 
2.32.0.3.g01195cf9f

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