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hv_netvsc: simplify callback event code

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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 <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger 2016-09-22 16:56:31 -07:00 committed by David S. Miller
parent 07d0f0008c
commit ee837a1373
1 changed files with 10 additions and 18 deletions
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28
drivers/net/hyperv/netvsc_drv.c
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@ -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) {