[PATCH 3/7] hv_netvsc: simplify callback event code

[sthemmin]

From: Stephen Hemminger <sthem...@microsoft.com>

The callback handler for netlink events can be simplified:
 * Consolidate check for netlink callback events about this driver itself.
 * Ignore non-Ethernet devices.

Signed-off-by: Stephen Hemminger <sthem...@microsoft.com>
---
 drivers/net/hyperv/netvsc_drv.c |   28 ++++++++++------------------
 1 files changed, 10 insertions(+), 18 deletions(-)

diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index e74dbcc..849b566 100644
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -1238,10 +1238,6 @@ static int netvsc_register_vf(struct net_device 
*vf_netdev)
        struct net_device *ndev;
        struct net_device_context *net_device_ctx;
        struct netvsc_device *netvsc_dev;
-       const struct ethtool_ops *eth_ops = vf_netdev->ethtool_ops;
-
-       if (eth_ops == NULL || eth_ops == &ethtool_ops)
-               return NOTIFY_DONE;
 
        /*
         * We will use the MAC address to locate the synthetic interface to
@@ -1286,12 +1282,8 @@ static int netvsc_vf_up(struct net_device *vf_netdev)
 {
        struct net_device *ndev;
        struct netvsc_device *netvsc_dev;
-       const struct ethtool_ops *eth_ops = vf_netdev->ethtool_ops;
        struct net_device_context *net_device_ctx;
 
-       if (eth_ops == &ethtool_ops)
-               return NOTIFY_DONE;
-
        ndev = get_netvsc_net_device(vf_netdev->dev_addr);
        if (!ndev)
                return NOTIFY_DONE;
@@ -1329,10 +1321,6 @@ static int netvsc_vf_down(struct net_device *vf_netdev)
        struct net_device *ndev;
        struct netvsc_device *netvsc_dev;
        struct net_device_context *net_device_ctx;
-       const struct ethtool_ops *eth_ops = vf_netdev->ethtool_ops;
-
-       if (eth_ops == &ethtool_ops)
-               return NOTIFY_DONE;
 
        ndev = get_netvsc_net_device(vf_netdev->dev_addr);
        if (!ndev)
@@ -1361,12 +1349,8 @@ static int netvsc_unregister_vf(struct net_device 
*vf_netdev)
 {
        struct net_device *ndev;
        struct netvsc_device *netvsc_dev;
-       const struct ethtool_ops *eth_ops = vf_netdev->ethtool_ops;
        struct net_device_context *net_device_ctx;
 
-       if (eth_ops == &ethtool_ops)
-               return NOTIFY_DONE;
-
        ndev = get_netvsc_net_device(vf_netdev->dev_addr);
        if (!ndev)
                return NOTIFY_DONE;
@@ -1542,13 +1526,21 @@ static int netvsc_netdev_event(struct notifier_block 
*this,
 {
        struct net_device *event_dev = netdev_notifier_info_to_dev(ptr);
 
+       /* Skip our own events */
+       if (event_dev->netdev_ops == &device_ops)
+               return NOTIFY_DONE;
+
+       /* Avoid non-Ethernet type devices */
+       if (event_dev->type != ARPHRD_ETHER)
+               return NOTIFY_DONE;
+
        /* Avoid Vlan dev with same MAC registering as VF */
        if (event_dev->priv_flags & IFF_802_1Q_VLAN)
                return NOTIFY_DONE;
 
        /* Avoid Bonding master dev with same MAC registering as VF */
-       if (event_dev->priv_flags & IFF_BONDING &&
-           event_dev->flags & IFF_MASTER)
+       if ((event_dev->priv_flags & IFF_BONDING) &&
+           (event_dev->flags & IFF_MASTER))
                return NOTIFY_DONE;
 
        switch (event) {
-- 
1.7.4.1