diff options
| author | dingtianhong <dingtianhong@huawei.com> | 2014-05-30 12:00:56 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-06-03 03:05:24 +0400 |
| commit | 688cea83f4396fa98b77a126ed278b89daccccdc (patch) | |
| tree | ae3349b41460cf5cfb9fe1a09ae1e613e619171f /drivers/net | |
| parent | 7d507ac28ab9a17f28fd8c8be82f9255a1f72834 (diff) | |
| download | linux-688cea83f4396fa98b77a126ed278b89daccccdc.tar.xz | |
macvlan: add netpoll support
Add netpoll support to macvlan devices. Based on the netpoll support in the 802.1q vlan code.
Tested and macvlan could work well with netconsole.
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/macvlan.c | 66 |
1 files changed, 65 insertions, 1 deletions
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c index d2dbcfc68ee4..eee9106d1da1 100644 --- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -33,6 +33,7 @@ #include <linux/workqueue.h> #include <net/rtnetlink.h> #include <net/xfrm.h> +#include <linux/netpoll.h> #define MACVLAN_HASH_SIZE (1 << BITS_PER_BYTE) @@ -357,12 +358,26 @@ xmit_world: return dev_queue_xmit(skb); } +static inline netdev_tx_t macvlan_netpoll_send_skb(struct macvlan_dev *vlan, struct sk_buff *skb) +{ +#ifdef CONFIG_NET_POLL_CONTROLLER + if (vlan->netpoll) + netpoll_send_skb(vlan->netpoll, skb); +#else + BUG(); +#endif + return NETDEV_TX_OK; +} + static netdev_tx_t macvlan_start_xmit(struct sk_buff *skb, struct net_device *dev) { unsigned int len = skb->len; int ret; - const struct macvlan_dev *vlan = netdev_priv(dev); + struct macvlan_dev *vlan = netdev_priv(dev); + + if (unlikely(netpoll_tx_running(dev))) + return macvlan_netpoll_send_skb(vlan, skb); if (vlan->fwd_priv) { skb->dev = vlan->lowerdev; @@ -788,6 +803,50 @@ static netdev_features_t macvlan_fix_features(struct net_device *dev, return features; } +#ifdef CONFIG_NET_POLL_CONTROLLER +static void macvlan_dev_poll_controller(struct net_device *dev) +{ + return; +} + +static int macvlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo) +{ + struct macvlan_dev *vlan = netdev_priv(dev); + struct net_device *real_dev = vlan->lowerdev; + struct netpoll *netpoll; + int err = 0; + + netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL); + err = -ENOMEM; + if (!netpoll) + goto out; + + err = __netpoll_setup(netpoll, real_dev); + if (err) { + kfree(netpoll); + goto out; + } + + vlan->netpoll = netpoll; + +out: + return err; +} + +static void macvlan_dev_netpoll_cleanup(struct net_device *dev) +{ + struct macvlan_dev *vlan = netdev_priv(dev); + struct netpoll *netpoll = vlan->netpoll; + + if (!netpoll) + return; + + vlan->netpoll = NULL; + + __netpoll_free_async(netpoll); +} +#endif /* CONFIG_NET_POLL_CONTROLLER */ + static const struct ethtool_ops macvlan_ethtool_ops = { .get_link = ethtool_op_get_link, .get_settings = macvlan_ethtool_get_settings, @@ -813,6 +872,11 @@ static const struct net_device_ops macvlan_netdev_ops = { .ndo_fdb_del = macvlan_fdb_del, .ndo_fdb_dump = ndo_dflt_fdb_dump, .ndo_get_lock_subclass = macvlan_get_nest_level, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = macvlan_dev_poll_controller, + .ndo_netpoll_setup = macvlan_dev_netpoll_setup, + .ndo_netpoll_cleanup = macvlan_dev_netpoll_cleanup, +#endif }; void macvlan_common_setup(struct net_device *dev) |